--- /dev/null
+build
+DerivedData
.Nd "linker"
.Sh SYNOPSIS
.Nm
-files...
-.Op options
-.Op Fl o Ar outputfile
+files...
+.Op options
+.Op Fl o Ar outputfile
.Sh DESCRIPTION
The
.Nm ld
command combines several object files and libraries, resolves references, and
-produces an ouput file.
+produces an ouput file.
.Nm ld
can produce a final linked image (executable, dylib, or bundle), or with the -r
option, produce another object file. If the -o option is not used, the output
.Ss Universal
The linker accepts universal (multiple-architecture) input files, but
always creates a "thin" (single-architecture), standard Mach-O output file.
-The architecture for the output file is specified using the -arch option.
+The architecture for the output file is specified using the -arch option.
If this option is not used,
.Nm ld
attempts to determine the output architecture by examining the object
architecture determines that of the output file. If no input
object file is a "thin" file, the native 32-bit architecture for the host is used.
.Pp
-Usually,
+Usually,
.Nm ld
-is not used directly. Instead the
+is not used directly. Instead the
.Xr gcc(1)
compiler driver invokes
.Nm ld.
-The compiler driver can be passed multiple -arch options and it will create a
-universal final linked image by invoking
+The compiler driver can be passed multiple -arch options and it will create a
+universal final linked image by invoking
.Nm ld
multiple times and then running
.Xr lipo(1)
merge the outputs into a universal file.
.Ss Layout
The object files are loaded in the order in which they are specified on the
-command line. The segments and the sections in those segments will appear in
-the output file in the order they are encountered in the object files being linked.
+command line. The segments and the sections in those segments will appear in
+the output file in the order they are encountered in the object files being linked.
All zero fill sections will appear after all non-zero fill sections in their segments.
-Sections created from files with the -sectcreate option will be laid out at after
-sections from .o files. The use of the -order_file option will alter the layout
+Sections created from files with the -sectcreate option will be laid out at after
+sections from .o files. The use of the -order_file option will alter the layout
rules above, and move the symbols specified to start of their section.
.Ss Libraries
A static library (aka static archive) is a collection of .o files with a table of contents
-that lists the global symbols in the .o files.
+that lists the global symbols in the .o files.
.Nm ld
will only pull .o files out of a static library if needed to resolve some symbol reference.
-Unlike traditional linkers,
+Unlike traditional linkers,
.Nm ld
will continually search a static library while linking. There is no need to specify a static
-library multiple times on the command line.
+library multiple times on the command line.
.Pp
A dynamic library (aka dylib or framework) is a final linked image. Putting a dynamic
-library on the command line causes two things: 1) The generated final linked image
+library on the command line causes two things: 1) The generated final linked image
will have encoded that it depends on that dynamic library. 2) Exported symbols from the
-dynamic library are used to resolve references.
+dynamic library are used to resolve references.
.Pp
-Both dynamic and static libraries are searched as they appear on the command line.
+Both dynamic and static libraries are searched as they appear on the command line.
.Ss Search paths
.Nm ld
maintains a list of directories to search for a library or framework to use. The default
library search path is /usr/lib then /usr/local/lib. The -L option will add a new library search
path. The default framework search path is /Library/Frameworks then /System/Library/Frameworks.
(Note: previously, /Network/Library/Frameworks was at the end of the default path. If you need
-that functionality, you need to explicitly add -F/Network/Library/Frameworks).
+that functionality, you need to explicitly add -F/Network/Library/Frameworks).
The -F option will add a new framework search path. The -Z option will remove
the standard search paths. The -syslibroot option will prepend a prefix to all search
paths.
.Ss Two-level namespace
-By default all references resolved to a dynamic library record the library to which
+By default all references resolved to a dynamic library record the library to which
they were resolved. At runtime, dyld uses that information to directly resolve
symbols. The alternative is to use the -flat_namespace option. With flat namespace,
the library is not recorded. At runtime, dyld will search each dynamic library in load
-order when resolving symbols. This is slower, but more like how other operating systems
-resolve symbols.
+order when resolving symbols. This is slower, but more like how other operating systems
+resolve symbols.
.Ss Indirect dynamic libraries
If the command line specifies to link against dylib A, and when dylib A was built it linked
-against dylib B, then B is considered an indirect dylib.
-When linking for two-level namespace, ld does not look at indirect dylibs, except when
-re-exported by a direct dylibs. On the other hand when linking for flat namespace,
+against dylib B, then B is considered an indirect dylib.
+When linking for two-level namespace, ld does not look at indirect dylibs, except when
+re-exported by a direct dylibs. On the other hand when linking for flat namespace,
ld does load all indirect dylibs and uses them to resolve references.
-Even though indirect dylibs are specified via a full path,
+Even though indirect dylibs are specified via a full path,
.Nm ld
first uses the specified search paths to locate each indirect dylib. If one cannot
be found using the search paths, the full path is used.
.Ss Dynamic libraries undefines
-When linking for two-level namespace,
-.Nm ld
+When linking for two-level namespace,
+.Nm ld
does not verify that undefines in dylibs actually
-exist. But when linking for flat namespace,
+exist. But when linking for flat namespace,
.Nm ld
-does check that all undefines from all loaded dylibs have a matching definition.
+does check that all undefines from all loaded dylibs have a matching definition.
This is sometimes used to force selected functions to be loaded from a static library.
.Sh OPTIONS
.Ss Options that control the kind of output
.It Fl bundle
Produce a mach-o bundle that has file type MH_BUNDLE.
.It Fl r
-Merges object files to produce another mach-o object file with file type MH_OBJECT.
+Merges object files to produce another mach-o object file with file type MH_OBJECT.
.It Fl dylinker
Produce a mach-o dylinker that has file type MH_DYLINKER. Only used when building dyld.
.It Fl dynamic
The default. Implied by -dylib, -bundle, or -execute
.It Fl static
-Produces a mach-o file that does not use the dyld. Only used building the kernel.
+Produces a mach-o file that does not use the dyld. Only used building the kernel.
.It Fl preload
Produces a mach-o file in which the mach_header, load commands, and symbol table are
not in any segment. This output type is used for firmware or embedded development
That is, the library is allowed to be missing at runtime.
.It Fl weak_library Ar path_to_library
This is the same as listing a file name path to a library on the link line except that it forces the
-library and all references to it to be marked as weak imports.
+library and all references to it to be marked as weak imports.
.It Fl reexport-l Ns Ar x
-This is the same as the -lx but specifies that the all symbols in library x should be available to
+This is the same as the -lx but specifies that the all symbols in library x should be available to
clients linking to the library being created. This was previously done with a separate -sub_library option.
.It Fl reexport_library Ar path_to_library
-This is the same as listing a file name path to a library on the link line and it specifies that the
+This is the same as listing a file name path to a library on the link line and it specifies that the
all symbols in library path should be available to clients linking to the library being created.
This was previously done with a separate -sub_library option.
.It Fl lazy-l Ns Ar x
This is the same as the -lx but it is only for shared libraries and the linker
-will construct glue code so that the shared library is not loaded until
+will construct glue code so that the shared library is not loaded until
the first function in it is called.
.It Fl lazy_library Ar path_to_library
This is the same as listing a file name path to a shared library on the link line
-except that the linker will construct glue code so that the shared library is not
+except that the linker will construct glue code so that the shared library is not
loaded until the first function in it is called.
.It Fl upward-l Ns Ar x
-This is the same as the -lx but specifies that the dylib is an upward dependency.
+This is the same as the -lx but specifies that the dylib is an upward dependency.
.It Fl upward_library Ar path_to_library
-This is the same as listing a file name path to a library on the link line but also marks
+This is the same as listing a file name path to a library on the link line but also marks
the dylib as an upward dependency.
.It Fl L Ns dir
-Add
-.Ar dir
-to the list of directories in which to search for libraries.
+Add
+.Ar dir
+to the list of directories in which to search for libraries.
Directories specified with -L are searched in the order they appear on the command line
and before the default search path. In Xcode4 and later, there can be a space between
the -L and directory.
.It Fl Z
Do not search the standard directories when searching for libraries and frameworks.
.It Fl syslibroot Ar rootdir
-Prepend
-.Ar rootdir
+Prepend
+.Ar rootdir
to all search paths when searching for libraries or frameworks.
.It Fl search_paths_first
-This is now the default (in Xcode4 tools). When processing -lx the linker now searches each directory
-in its library search paths for `libx.dylib' then `libx.a' before the moving on to the next path
-in the library search path.
+This is now the default (in Xcode4 tools). When processing -lx the linker now searches each directory
+in its library search paths for `libx.dylib' then `libx.a' before the moving on to the next path
+in the library search path.
.It Fl search_dylibs_first
Changes the searching behavior for libraries. The default is that when processing -lx the linker
searches each directory in its library search paths for `libx.dylib' then `libx.a'.
If the optional suffix is specified the framework is first searched for the name with the suffix and then without
(e.g. look for `name.framework/name_suffix' first, if not there try `name.framework/name').
.It Fl weak_framework Ar name[,suffix]
-This is the same as the -framework name[,suffix] but forces the framework and all
-references to it to be marked as weak imports.
+This is the same as the -framework name[,suffix] but forces the framework and all
+references to it to be marked as weak imports.
.It Fl reexport_framework Ar name[,suffix]
-This is the same as the -framework name[,suffix] but also specifies that the
+This is the same as the -framework name[,suffix] but also specifies that the
all symbols in that framework should be available to clients linking to the library being created.
This was previously done with a separate -sub_umbrella option.
.It Fl lazy_framework Ar name[,suffix]
-This is the same as the -framework name[,suffix] except that the linker will
-construct glue code so that the framework is not
+This is the same as the -framework name[,suffix] except that the linker will
+construct glue code so that the framework is not
loaded until the first function in it is called. You cannot directly access
data or Objective-C classes in a framework linked this way.
.It Fl upward_framework Ar name[,suffix]
-This is the same as the -framework name[,suffix] but also specifies that the
-framework is an upward dependency.
+This is the same as the -framework name[,suffix] but also specifies that the
+framework is an upward dependency.
.It Fl F Ns dir
-Add
+Add
.Ar dir
-to the list of directories in which to search for frameworks.
+to the list of directories in which to search for frameworks.
Directories specified with -F are searched in the order they appear on the command line
and before the default search path. In Xcode4 and later, there can be a space between
the -F and directory.
.Ss Options that control additional content
.Bl -tag
.It Fl sectcreate Ar segname sectname file
-The section
-.Ar sectname
-in the segment
-.Ar segname
-is created from the contents of file
-.Ar file.
-The combination of segname and sectname must be unique Ð there cannot already be a section (segname,sectname)
+The section
+.Ar sectname
+in the segment
+.Ar segname
+is created from the contents of file
+.Ar file.
+The combination of segname and sectname must be unique Ð there cannot already be a section (segname,sectname)
from any other input.
.It Fl filelist Ar file[,dirname]
-Specifies that the linker should link the files listed in
-.Ar file .
-This is an alternative to listing the files on the command line.
+Specifies that the linker should link the files listed in
+.Ar file .
+This is an alternative to listing the files on the command line.
The file names are listed one per line separated only by newlines. (Spaces and tabs are assumed to be part of the file name.)
-If the optional directory name,
-.Ar dirname
+If the optional directory name,
+.Ar dirname
is specified, it is prepended to each name in the list file.
.It Fl dtrace Ar file
-Enables dtrace static probes when producing a final linked image. The file
+Enables dtrace static probes when producing a final linked image. The file
.Ar file
must be a DTrace script which declares the static probes.
.El
-.Ss Options that control optimizations
+.Ss Options that control optimizations
.Bl -tag
.It Fl dead_strip
-Remove functions and data that are unreachable by the entry point or exported symbols.
+Remove functions and data that are unreachable by the entry point or exported symbols.
.It Fl order_file Ar file
Alters the order in which functions and data are laid out. For each section in the output file,
-any symbol in that section that are specified in the order file
+any symbol in that section that are specified in the order file
.Ar file
-is moved to the start of its section and laid out in the same order as in the order file
+is moved to the start of its section and laid out in the same order as in the order file
.Ar file .
Order files are text files with one symbol name per line. Lines starting with a # are comments.
-A symbol name may be optionally preceded with its object file leaf name and a colon (e.g. foo.o:_foo).
-This is useful for static functions/data that occur in multiple files.
+A symbol name may be optionally preceded with its object file leaf name and a colon (e.g. foo.o:_foo).
+This is useful for static functions/data that occur in multiple files.
A symbol name may also be optionally preceded with the architecture (e.g. ppc:_foo or ppc:foo.o:_foo).
-This enables you to have one order file that works for multiple architectures.
+This enables you to have one order file that works for multiple architectures.
Literal c-strings may be ordered by by quoting the string (e.g. "Hello, world\\n") in the order file.
.It Fl no_order_inits
When the -order_file option is not used, the linker lays out functions in object file order and
is a hexadecimal number with an optional leading 0x. By choosing non-overlapping address for all
dylibs and bundles that a program loads, launch time can be improved because dyld will not need to
"rebase" the image (that is, adjust pointers within the image to work at the loaded address).
-It is often easier to not use this option, but instead use the rebase(1) tool, and give it a list of dylibs.
+It is often easier to not use this option, but instead use the rebase(1) tool, and give it a list of dylibs.
It will then choose non-overlapping addresses for the list and rebase them all.
This option is also called -seg1addr for compatibility.
.It Fl no_implicit_dylibs
-When creating a two-level namespace final linked image, normally the linker will hoist up public dylibs
+When creating a two-level namespace final linked image, normally the linker will hoist up public dylibs
that are implicitly linked to make the two-level namespace
-encoding more efficient for dyld. For example, Cocoa re-exports AppKit and AppKit re-exports Foundation.
+encoding more efficient for dyld. For example, Cocoa re-exports AppKit and AppKit re-exports Foundation.
If you link with -framework Cocoa and use a symbol from Foundation, the linker will implicitly add a load
-command to load Foundation and encode the symbol as coming from Foundation. If you use this option,
+command to load Foundation and encode the symbol as coming from Foundation. If you use this option,
the linker will not add a load command for Foundation and encode the symbol as coming from Cocoa. Then
at runtime dyld will have to search Cocoa and AppKit before finding the symbol in Foundation.
.It Fl exported_symbols_order Ar file
When targeting Mac OS X 10.6 or later, the format of the exported symbol information can be optimized to
make lookups of popular symbols faster. This option is used to pass a file containing a list of
the symbols most frequently used by clients of the dynamic library being built. Not all exported symbols
-need to be listed.
+need to be listed.
.It Fl no_zero_fill_sections
By default the linker moves all zero fill sections to the end of the __DATA segment and configures
them to use no space on disk. This option suppresses that optimization, so zero-filled data occupies
maximum branch distance. Useful with -preload when code is in multiple sections but all are within
the branch range.
.El
-.Ss Options when creating a dynamic library (dylib)
+.Ss Options when creating a dynamic library (dylib)
.Bl -tag
.It Fl install_name Ar name
-Sets an internal "install path" (LC_ID_DYLIB) in a dynamic library. Any clients linked against the library
-will record that path as the way dyld should locate this library. If this option is not specified, then
+Sets an internal "install path" (LC_ID_DYLIB) in a dynamic library. Any clients linked against the library
+will record that path as the way dyld should locate this library. If this option is not specified, then
the -o path will be used. This option is also called -dylib_install_name for compatibility.
.It Fl mark_dead_strippable_dylib
-Specifies that the dylib being built can be dead strip by any client. That is, the dylib has
+Specifies that the dylib being built can be dead strip by any client. That is, the dylib has
no initialization side effects. So if a client links against the dylib, but never uses
any symbol from it, the linker can optimize away the use of the dylib.
.It Fl compatibility_version Ar number
-Specifies the compatibility version number of the library. When a library is loaded by dyld, the
+Specifies the compatibility version number of the library. When a library is loaded by dyld, the
compatibility version is checked and if the program's version is greater that the library's version, it is an error.
-The format of
-.Ar number
-is X[.Y[.Z]] where X must be a positive non-zero number less than or equal to 65535,
-and .Y and .Z are optional and if present must be non-negative numbers less than or equal to 255.
-If the compatibility version number is not specified, it has a value of 0 and no checking is done when the library is used.
+The format of
+.Ar number
+is X[.Y[.Z]] where X must be a positive non-zero number less than or equal to 65535,
+and .Y and .Z are optional and if present must be non-negative numbers less than or equal to 255.
+If the compatibility version number is not specified, it has a value of 0 and no checking is done when the library is used.
This option is also called -dylib_compatibility_version for compatibility.
.It Fl current_version Ar number
-Specifies the current version number of the library. The current version of the library can be obtained
-programmatically by the user of the library so it can determine exactly which version of the library it is using.
-The format of
-.Ar number
-is X[.Y[.Z]] where X must be a positive non-zero number less than or equal to 65535,
-and .Y and .Z are optional and if present must be non-negative numbers less than or equal to 255.
+Specifies the current version number of the library. The current version of the library can be obtained
+programmatically by the user of the library so it can determine exactly which version of the library it is using.
+The format of
+.Ar number
+is X[.Y[.Z]] where X must be a positive non-zero number less than or equal to 65535,
+and .Y and .Z are optional and if present must be non-negative numbers less than or equal to 255.
If the version number is not specified, it has a value of 0.
This option is also called -dylib_current_version for compatibility.
.El
.Bl -tag
.It Fl pie
This makes a special kind of main executable that is position independent (PIE). On Mac OS X 10.5 and later, the OS
-the OS will load a PIE at a random address each time it is executed. You cannot create a PIE from .o files compiled
-with -mdynamic-no-pic. That means the codegen is less optimal, but the address randomization adds some
+the OS will load a PIE at a random address each time it is executed. You cannot create a PIE from .o files compiled
+with -mdynamic-no-pic. That means the codegen is less optimal, but the address randomization adds some
security. When targeting Mac OS X 10.7 or later PIE is the default for main executables.
.It Fl no_pie
Do not make a position independent executable (PIE). This is the default, when targeting 10.6 and earlier.
By default the linker creates an unreadable segment starting at address zero named __PAGEZERO. Its existence
will cause a bus error if a NULL pointer is dereferenced. The argument
.Ar size
-is a hexadecimal number with an optional leading 0x. If
+is a hexadecimal number with an optional leading 0x. If
.Ar size
-is zero, the linker will not generate a page zero segment. By default on 32-bit architectures the page zero size
+is zero, the linker will not generate a page zero segment. By default on 32-bit architectures the page zero size
is 4KB. On 64-bit architectures, the default size is 4GB. The ppc64 architecture has some special cases. Since Mac
-OS X 10.4 did not support 4GB page zero programs, the default page zero size for ppc64 will be 4KB unless
+OS X 10.4 did not support 4GB page zero programs, the default page zero size for ppc64 will be 4KB unless
-macosx_version_min is 10.5 or later. Also, the -mdynamic-no-pic codegen model for ppc64 will only work if the
code is placed in the lower 2GB of the address space, so the if the linker detects any such code, the page zero
size is set to 4KB and then a new unreadable trailing segment is created after the code, filling up the lower 4GB.
Specifies the maximum stack size for the main thread in a program. Without this option a program has a 8MB stack.
The argument
.Ar size
-is a hexadecimal number with an optional leading 0x. The
+is a hexadecimal number with an optional leading 0x. The
.Ar size
should be a multiple of the architecture's page size (4KB or 16KB).
-.It Fl allow_stack_execute
+.It Fl allow_stack_execute
Marks executable so that all stacks in the task will be given stack execution privilege. This includes pthread stacks.
.It Fl export_dynamic
Preserves all global symbols in main executables during LTO. Without this option, Link Time Optimization
is allowed to inline and remove global functions. This option is used when a main executable may load
-a plug-in which requires certain symbols from the main executable.
+a plug-in which requires certain symbols from the main executable.
.El
.Ss Options when creating a bundle
.Bl -tag
.It Fl bundle_loader Ar executable
-This specifies the
-.Ar executable
-that will be loading the bundle output file being linked.
-Undefined symbols from the bundle are checked against the specified
-.Ar executable
-like it was one of the
+This specifies the
+.Ar executable
+that will be loading the bundle output file being linked.
+Undefined symbols from the bundle are checked against the specified
+.Ar executable
+like it was one of the
dynamic libraries the bundle was linked with.
.El
.Ss Options when creating an object file
.Bl -tag
.It Fl keep_private_externs
-Don't turn private external (aka visibility=hidden) symbols into static symbols,
+Don't turn private external (aka visibility=hidden) symbols into static symbols,
but rather leave them as private external in the resulting object file.
.It Fl d
Force definition of common symbols. That is, transform tentative definitions into real definitions.
.Ss Options that control symbol resolution
.Bl -tag
.It Fl exported_symbols_list Ar filename
-The specified
-.Ar filename
-contains a list of global symbol names that will remain as global symbols in the output file.
-All other global symbols will be treated as if they were marked as __private_extern__ (aka visibility=hidden)
+The specified
+.Ar filename
+contains a list of global symbol names that will remain as global symbols in the output file.
+All other global symbols will be treated as if they were marked as __private_extern__ (aka visibility=hidden)
and will not be global in the output file. The symbol names listed in filename must be one per line.
-Leading and trailing white space are not part of the symbol name.
+Leading and trailing white space are not part of the symbol name.
Lines starting with # are ignored, as are lines with only white space.
Some wildcards (similar to shell file matching) are supported. The * matches zero or more characters.
The ? matches one character. [abc] matches one character which must be an 'a', 'b', or 'c'. [a-z] matches
-any single lower case letter from 'a' to 'z'.
+any single lower case letter from 'a' to 'z'.
.It Fl exported_symbol Ar symbol
-The specified
+The specified
.Ar symbol
-is added to the list of global symbols names that will remain as global symbols in the output file. This
-option can be used multiple times. For short lists, this can be more convenient than creating a file and using
+is added to the list of global symbols names that will remain as global symbols in the output file. This
+option can be used multiple times. For short lists, this can be more convenient than creating a file and using
-exported_symbols_list.
.It Fl unexported_symbols_list Ar file
-The specified
-.Ar filename
-contains a list of global symbol names that will not remain as global symbols in the output file.
+The specified
+.Ar filename
+contains a list of global symbol names that will not remain as global symbols in the output file.
The symbols will be treated as if they were marked as __private_extern__ (aka visibility=hidden) and will not be global
-in the output file. The symbol names listed in filename must be one per line.
-Leading and trailing white space are not part of the symbol name.
+in the output file. The symbol names listed in filename must be one per line.
+Leading and trailing white space are not part of the symbol name.
Lines starting with # are ignored, as are lines with only white space.
Some wildcards (similar to shell file matching) are supported. The * matches zero or more characters.
The ? matches one character. [abc] matches one character which must be an 'a', 'b', or 'c'. [a-z] matches
-any single lower case letter from 'a' to 'z'.
+any single lower case letter from 'a' to 'z'.
.It Fl unexported_symbol Ar symbol
-The specified
+The specified
.Ar symbol
-is added to the list of global symbols names that will not remain as global symbols in the output file. This
-option can be used multiple times. For short lists, this can be more convenient than creating a file and using
+is added to the list of global symbols names that will not remain as global symbols in the output file. This
+option can be used multiple times. For short lists, this can be more convenient than creating a file and using
-unexported_symbols_list.
.It Fl reexported_symbols_list Ar file
-The specified
-.Ar filename
+The specified
+.Ar filename
contains a list of symbol names that are implemented in a dependent dylib and should be re-exported
-through the dylib being created.
+through the dylib being created.
.It Fl alias Ar symbol_name Ar alternate_symbol_name
-Create an alias named
+Create an alias named
.Ar alternate_symbol_name
for the symbol
.Ar symbol_name .
By default the alias symbol has global visibility. This option was previous the -idef:indir option.
.It Fl alias_list Ar filename
-The specified
+The specified
.Ar filename
contains a list of aliases. The symbol name and its alias are on one line, separated by whitespace.
Lines starting with # are ignored.
-.It Fl flat_namespace
+.It Fl flat_namespace
Alters how symbols are resolved at build time and runtime. With -two_levelnamespace (the default), the linker
-only searches dylibs on the command line for symbols, and records in which dylib they were found. With -flat_namespace,
+only searches dylibs on the command line for symbols, and records in which dylib they were found. With -flat_namespace,
the linker searches all dylibs on the command line and all dylibs those original dylibs depend on. The linker
does not record which dylib an external symbol came from, so at runtime dyld again searches all images and uses
the first definition it finds. In addition, any undefines in loaded flat_namespace dylibs must be resolvable
-at build time.
+at build time.
.It Fl u Ar symbol_name
-Specified that symbol
+Specified that symbol
.Ar symbol_name
must be defined for the link to succeed. This is useful to force selected functions to be loaded
from a static library.
.It Fl U Ar symbol_name
-Specified that it is ok for
+Specified that it is ok for
.Ar symbol_name
to have no definition. With -two_levelnamespace, the resulting symbol will be marked dynamic_lookup which
means dyld will search all loaded images.
.It Fl undefined Ar treatment
Specifies how undefined symbols are to be treated. Options are: error, warning, suppress, or dynamic_lookup. The
-default is error.
+default is error.
.It Fl rpath Ar path
-Add
+Add
.Ar path
to the runpath search path list for image being created. At runtime, dyld uses the runpath when searching
for dylibs whose load path begins with @rpath/.
.It Fl commons Ar treatment
-Specifies how commons (aka tentative definitions) are resolved with respect to dylibs. Options are:
+Specifies how commons (aka tentative definitions) are resolved with respect to dylibs. Options are:
ignore_dylibs, use_dylibs, error. The default is ignore_dylibs which means the linker will turn a tentative
definition in an object file into a real definition and not even check dylibs for conflicts. The dylibs
-option means the linker should check linked dylibs for definitions and use them to replace tentative definitions
+option means the linker should check linked dylibs for definitions and use them to replace tentative definitions
from object files. The error option means the linker should issue an error whenever a tentative definition in an
object file conflicts with an external symbol in a linked dylib. See also -warn_commons.
.El
Log why each object file in a static library is loaded. That is, what symbol was needed. Also called -whyload
for compatibility.
.It Fl why_live Ar symbol_name
-Logs a chain of references to
+Logs a chain of references to
.Ar symbol_name .
Only applicable with -dead_strip .
It can help debug why something that you think should be dead strip removed is not removed.
allows dead code stripping, which uses symbols to break up code and data, to
work properly and provides the security of having source symbol names removed.
.It Fl non_global_symbols_strip_list Ar filename
-The specified
-.Ar filename
-contains a list of non-global symbol names that should be removed from the output file's symbol table. All other
+The specified
+.Ar filename
+contains a list of non-global symbol names that should be removed from the output file's symbol table. All other
non-global symbol names will remain in the output files symbol table. See -exported_symbols_list for syntax and use
of wildcards.
.It Fl non_global_symbols_no_strip_list Ar filename
-The specified
-.Ar filename
-contains a list of non-global symbol names that should be remain in the output file's symbol table. All other
+The specified
+.Ar filename
+contains a list of non-global symbol names that should be remain in the output file's symbol table. All other
symbol names will be removed from the output file's symbol table. See -exported_symbols_list for syntax and use
of wildcards.
.El
Generates an embedded bitcode bundle in the output binary. The bitcode bundle is embedded in __LLVM, __bundle section.
This option requires all the object files, static libraries and user frameworks/dylibs contain bitcode.
Note: not all the linker options are supported to use together with -bitcode_bundle.
-.It Fl bitcode_hide_symbol
+.It Fl bitcode_hide_symbols
Specifies this option together with -bitcode_bundle to hide all non-exported symbols from output bitcode bundle.
The hide symbol process might not be reversible. To obtain a reverse mapping file to recover all the symbols, use
-bitcode_symbol_map option.
.Bl -tag
.It Fl v
Prints the version of the linker.
+.It Fl no_weak_imports
+Error if any symbols are weak imports (i.e. allowed to be unresolved (NULL) at runtime). Useful for config based
+projects that assume they are built and run on the same OS version.
.It Fl no_deduplicate
Don't run deduplication pass in linker
.It Fl verbose_deduplicate
target segment name and a path to a file containing a list of symbols to move.
Comments can be added to the symbol file by starting a line with a #.
If there are multiple instances of a symbol name (for instance a "static int foo=5;" in multiple files)
-the symbol name in the symbol list file can be prefixed with the object file name
+the symbol name in the symbol list file can be prefixed with the object file name
(e.g. "init.o:_foo") to move a specific instance.
-.It Fl move_to_ro_section Ar segment_name Ar section_name Ar filename
+.It Fl move_to_ro_segment Ar segment_name Ar filename
Moves code symbols to another segment. The command line option specifies the
target segment name and a path to a file containing a list of symbols to move.
Comments can be added to the symbol file by starting a line with a #.
If there are multiple instances of a symbol name (for instance a "static int foo() {}" in multiple files)
-the symbol name in the symbol list file can be prefixed with the object file name
+the symbol name in the symbol list file can be prefixed with the object file name
(e.g. "init.o:_foo") to move a specific instance.
.It Fl rename_section Ar orgSegment orgSection newSegment newSection
Renames section orgSegment/orgSection to newSegment/newSection.
-.It Fl rename_segment Ar orgSegment newSegment
+.It Fl rename_segment Ar orgSegment newSegment
Renames all sections with orgSegment segment name to have newSegment segment name.
.It Fl trace_symbol_layout
For using in debugging -rename_section, -rename_segment, -move_to_ro_segment, and -move_to_rw_segment.
This option prints out a line show where and why each symbol was moved.
-Note: These options do not chain. For each symbol, the linker first checks
--move_to_ro_segment and -move_to_rw_segment. If the symbol is not moved,
-it checks for an applicable -rename_section. Only if the symbol still has
-not been moved, does the linker look for an applicable -rename_segment option.
+Note: These options do chain. For each symbol, the linker first checks
+-move_to_ro_segment and -move_to_rw_segment. Next it applies any -rename_section options,
+and lastly and -rename_segment options.
.It Fl section_order Ar segname Ar colon_separated_section_list
Only for use with -preload. Specifies the order that sections with the specified segment should be layout out.
-For example: "-section_order __ROM __text:__const:__cstring".
+For example: "-section_order __ROM __text:__const:__cstring".
.It Fl segment_order Ar colon_separated_segment_list
Only for use with -preload. Specifies the order segments should be layout out.
-For example: "-segment_order __ROM:__ROM2:__RAM".
+For example: "-segment_order __ROM:__ROM2:__RAM".
.It Fl allow_heap_execute
-Normally i386 main executables will be marked so that the Mac OS X 10.7 and later kernel
+Normally i386 main executables will be marked so that the Mac OS X 10.7 and later kernel
will only allow pages with the x-bit to execute instructions. This option overrides that
behavior and allows instructions on any page to be executed.
.It Fl application_extension
will then validiate that any dynamic libraries linked against are safe for use in
application extensions.
.It Fl no_application_extension
-Specifies that the code is being linked is not safe for use in an application extension.
+Specifies that the code is being linked is not safe for use in an application extension.
For instance, can be used when creating a framework that should not be used in
an application extension.
.It Fl fatal_warnings
.It Fl warn_compact_unwind
When producing a final linked image, the linker processes the __eh_frame section and
produces an __unwind_info section. Most FDE entries in the __eh_frame can be represented
-by a 32-bit value in the __unwind_info section. The option issues a warning for
+by a 32-bit value in the __unwind_info section. The option issues a warning for
any function whose FDE cannot be expressed in the compact unwind format.
.It Fl warn_weak_exports
Issue a warning if the resulting final linked image contains weak external symbols. Such
symbols require dyld to do extra work at launch time to coalesce those symbols.
.It Fl objc_gc_compaction
-Marks the Objective-C image info in the final linked image with the bit that says that the
+Marks the Objective-C image info in the final linked image with the bit that says that the
code was built to work the compacting garbage collection.
.It Fl objc_gc
Verifies all code was compiled with -fobjc-gc or -fobjc-gc-only.
.It Fl objc_gc_only
Verifies all code was compiled with -fobjc-gc-only.
.It Fl dead_strip_dylibs
-Remove dylibs that are unreachable by the entry point or exported symbols. That is,
+Remove dylibs that are unreachable by the entry point or exported symbols. That is,
suppresses the generation of load command commands for dylibs which supplied no
-symbols during the link. This option should not be used when linking against a dylib which
+symbols during the link. This option should not be used when linking against a dylib which
is required at runtime for some indirect reason such as the dylib has an important initializer.
.It Fl allow_sub_type_mismatches
Normally the linker considers different cpu-subtype for ARM (e.g. armv4t and armv6) to be different
.It Fl setuid_safe
Sets the MH_SETUID_SAFE bit in the mach header of the output file.
.It Fl interposable
-Indirects access to all to exported symbols when creating a dynamic library.
+Indirects access to all to exported symbols when creating a dynamic library.
.It Fl init Ar symbol_name
-The specified symbol_name will be run as the first initializer. Only used when creating a dynamic library.
+The specified symbol_name will be run as the first initializer. Only used when creating a dynamic library.
.It Fl sub_library Ar library_name
-The specified dylib will be re-exported. For example the library_name for /usr/lib/libobjc_profile.A.dylib would be libobjc.
-Only used when creating a dynamic library.
+The specified dylib will be re-exported. For example the library_name for /usr/lib/libobjc_profile.A.dylib would be libobjc.
+Only used when creating a dynamic library.
.It Fl sub_umbrella Ar framework_name
-The specified framework will be re-exported. Only used when creating a dynamic library.
+The specified framework will be re-exported. Only used when creating a dynamic library.
.It Fl allowable_client Ar name
-Restricts what can link against the dynamic library being created. By default any code
+Restricts what can link against the dynamic library being created. By default any code
can link against any dylib. But if a dylib is supposed to be private to a small
set of clients, you can formalize that by adding a -allowable_client for each client.
If a client is libfoo.1.dylib its -allowable_client name would be "foo". If a
client is Foo.framework its -allowable_client name would be "Foo". For the degenerate
-case where you want no one to ever link against a dylib, you can set the
--allowable_client to "!".
+case where you want no one to ever link against a dylib, you can set the
+-allowable_client to "!".
.It Fl client_name Ar name
-Enables a bundle to link against a dylib that was built with -allowable_client.
+Enables a bundle to link against a dylib that was built with -allowable_client.
The name specified must match one of the -allowable_client names specified when the dylib was created.
.It Fl umbrella Ar framework_name
Specifies that the dylib being linked is re-exported through an umbrella framework of the specified name.
.It Fl headerpad Ar size
-Specifies the minimum space for future expansion of the load commands. Only useful if intend to run
+Specifies the minimum space for future expansion of the load commands. Only useful if intend to run
install_name_tool to alter the load commands later. Size is a hexadecimal number.
.It Fl headerpad_max_install_names
-Automatically adds space for future expansion of load commands such that all paths could expand to MAXPATHLEN.
+Automatically adds space for future expansion of load commands such that all paths could expand to MAXPATHLEN.
Only useful if intend to run install_name_tool to alter the load commands later.
.It Fl bind_at_load
Sets a bit in the mach header of the resulting binary which tells dyld to bind all symbols when the binary is loaded, rather than lazily.
Sets a bit in the mach header of the resulting binary which tells dyld to not only use flat namespace for the binary,
but force flat namespace binding on all dylibs and bundles loaded in the process. Can only be used when linking main executables.
.It Fl sectalign Ar segname Ar sectname Ar value
-The section named sectname in the segment segname will have its alignment set to value, where value is a hexadecimal
-number that must be an integral power of 2.
+The section named sectname in the segment segname will have its alignment set to value, where value is a hexadecimal
+number that must be an integral power of 2.
.It Fl stack_addr Ar address
Specifies the initial address of the stack pointer value, where value is a hexadecimal number rounded to a page boundary.
.It Fl segprot Ar segname Ar max_prot Ar init_prot
-Specifies the maximum and initial virtual memory protection of the named segment, name, to be max and init ,respectively.
+Specifies the maximum and initial virtual memory protection of the named segment, name, to be max and init ,respectively.
The values for max and init are any combination of the characters `r' (for read), `w' (for write), `x' (for execute) and `-' (no access).
.It Fl seg_addr_table Ar filename
-Specifies a file containing base addresses for dynamic libraries. Each line of the file is a hexadecimal base address
+Specifies a file containing base addresses for dynamic libraries. Each line of the file is a hexadecimal base address
followed by whitespace then the install name of the corresponding dylib. The # character denotes a comment.
.It Fl segs_read_write_addr Ar address
-Allows a dynamic library to be built where the read-only and read-write segments are not contiguous. The address
+Allows a dynamic library to be built where the read-only and read-write segments are not contiguous. The address
specified is a hexadecimal number that indicates the base address for the read-write segments.
.It Fl segs_read_only_addr Ar address
-Allows a dynamic library to be built where the read-only and read-write segments are not contiguous. The address
+Allows a dynamic library to be built where the read-only and read-write segments are not contiguous. The address
specified is a hexadecimal number that indicates the base address for the read-only segments.
.It Fl segaddr Ar name Ar address
-Specifies the starting address of the segment named name to be address. The address must be a hexadecimal number
+Specifies the starting address of the segment named name to be address. The address must be a hexadecimal number
that is a multiple of 4K page size.
.It Fl seg_page_size Ar name Ar size
-Specifies the page size used by the specified segment. By default the page size is 4096 for all segments.
+Specifies the page size used by the specified segment. By default the page size is 4096 for all segments.
The linker will lay out segments such that size of a segment is always an even multiple of its page size.
.It Fl dylib_file Ar install_name:file_name
-Specifies that a dynamic shared library is in a different location than its standard location. Use this option
-when you link with a library that is dependent on a dynamic library, and the dynamic library is in a location other
-than its default location. install_name specifies the path where the library normally resides. file_name specifies
-the path of the library you want to use instead. For example, if you link to a library that depends upon the dynamic
-library libsys and you have libsys installed in a nondefault location, you would use this option:
+Specifies that a dynamic shared library is in a different location than its standard location. Use this option
+when you link with a library that is dependent on a dynamic library, and the dynamic library is in a location other
+than its default location. install_name specifies the path where the library normally resides. file_name specifies
+the path of the library you want to use instead. For example, if you link to a library that depends upon the dynamic
+library libsys and you have libsys installed in a nondefault location, you would use this option:
-dylib_file /lib/libsys_s.A.dylib:/me/lib/libsys_s.A.dylib.
.It Fl prebind
-The created output file will be in the prebound format. This was used in Mac OS X 10.3 and earlier to improve launch performance.
+The created output file will be in the prebound format. This was used in Mac OS X 10.3 and earlier to improve launch performance.
.It Fl weak_reference_mismatches Ar treatment
-Specifies what to do if a symbol is weak-imported in one object file but not weak-imported in another. The valid
+Specifies what to do if a symbol is weak-imported in one object file but not weak-imported in another. The valid
treatments are: error, weak, or non-weak. The default is non-weak.
.It Fl read_only_relocs Ar treatment
-Enables the use of relocations which will cause dyld to modify (copy-on-write) read-only pages. The compiler will
-normally never generate such code.
+Enables the use of relocations which will cause dyld to modify (copy-on-write) read-only pages. The compiler will
+normally never generate such code.
.It Fl force_cpusubtype_ALL
The is only applicable with -arch ppc. It tells the linker to ignore the PowerPC cpu requirements (e.g. G3, G4 or G5) encoded
in the object files and mark the resulting binary as runnable on any PowerPC cpu.
.It Fl no_arch_warnings
Suppresses warning messages about files that have the wrong architecture for the -arch flag
.It Fl arch_errors_fatal
-Turns into errors, warnings about files that have the wrong architecture for the -arch flag.
+Turns into errors, warnings about files that have the wrong architecture for the -arch flag.
.It Fl e Ar symbol_name
Specifies the entry point of a main executable. By default the entry name is "start" which is found in crt1.o which contains
the glue code need to set up and call main().
.It Fl w
Suppress all warning messages
.It Fl final_output Ar name
-Specifies the install name of a dylib if -install_name is not used. This option is used by gcc driver when it is invoked
-with multiple -arch arguments.
+Specifies the install name of a dylib if -install_name is not used. This option is used by gcc driver when it is invoked
+with multiple -arch arguments.
.It Fl arch_multiple
-Specifes that the linker should augment error and warning messages with the architecture name. This option is used by gcc
-driver when it is invoked with multiple -arch arguments.
+Specifes that the linker should augment error and warning messages with the architecture name. This option is used by gcc
+driver when it is invoked with multiple -arch arguments.
.It Fl twolevel_namespace_hints
-Specifies that hints should be added to the resulting binary that can help speed up runtime binding by dyld as long as the
+Specifies that hints should be added to the resulting binary that can help speed up runtime binding by dyld as long as the
libraries being linked against have not changed.
.It Fl dot Ar path
Create a file at the specified path containing a graph of symbol dependencies. The .dot file can be viewed in GraphViz.
.It Fl read_only_stubs
[i386 only] Makes the __IMPORT segment of a final linked images read-only. This option makes a program slightly more
secure in that the JMP instructions in the i386 fast stubs cannot be easily overwritten by malicious code. The downside
-is the dyld must use mprotect() to temporarily make the segment writable while it is binding the stubs.
+is the dyld must use mprotect() to temporarily make the segment writable while it is binding the stubs.
.It Fl slow_stubs
-[i386 only] Instead of using single JMP instruction stubs, the linker creates code in the __TEXT segment which
-calls through a lazy pointer in the __DATA segment.
+[i386 only] Instead of using single JMP instruction stubs, the linker creates code in the __TEXT segment which
+calls through a lazy pointer in the __DATA segment.
.It Fl interposable_list Ar filename
-The specified
-.Ar filename
+The specified
+.Ar filename
contains a list of global symbol names that should always be accessed indirectly. For instance, if libSystem.dylib
is linked such that _malloc is interposable, then calls to malloc() from within libSystem will go through a dyld
-stub and could potentially indirected to an alternate malloc. If libSystem.dylib were built without making _malloc
-interposable then if _malloc was interposed at runtime, calls to malloc from with libSystem would be missed
+stub and could potentially indirected to an alternate malloc. If libSystem.dylib were built without making _malloc
+interposable then if _malloc was interposed at runtime, calls to malloc from with libSystem would be missed
(not interposed) because they would be direct calls.
.It Fl no_function_starts
By default the linker creates a compress table of function start addresses in the LINKEDIT of
.It Fl object_path_lto Ar filename
When performing Link Time Optimization (LTO) and a temporary mach-o object file is needed, if this
option is used, the temporary file will be stored at the specified path and remain after the link
-is complete. Without the option, the linker picks a path and deletes the object file before the linker
+is complete. Without the option, the linker picks a path and deletes the object file before the linker
tool completes, thus tools such as the debugger or dsymutil will not be able to access the DWARF debug
info in the temporary object file.
.It Fl lto_library Ar path
When performing Link Time Optimization (LTO), the linker normally loads libLTO.dylib relative to the linker
binary (../lib/libLTO.dylib). This option allows the user to specify the path to a specific libLTO.dylib
to load instead.
+.It Fl cache_path_lto Ar path
+When performing Incremental Link Time Optimization (LTO), use this directory as a cache for incremental rebuild.
+.It Fl prune_interval_lto Ar seconds
+When performing Incremental Link Time Optimization (LTO), the cache will pruned after the specified interval.
+.It Fl prune_after_lto Ar seconds
+When pruning the cache for Incremental Link Time Optimization (LTO), the cache entries are removed after the
+specificied interval.
+.It Fl max_relative_cache_size_lto Ar percent
+When performing Incremental Link Time Optimization (LTO), the cache will be pruned to not go over this percentage
+of the free space. I.e. a value of 100 would indicate that the cache may fill the disk, and a value of 50 would
+indicate that the cache size will be kept under the free disk space.
.It Fl page_align_data_atoms
-During development, this option can be used to space out all global variables so each is on a separate page.
-This is useful when analyzing dirty and resident pages. The information can then be used to create an
+During development, this option can be used to space out all global variables so each is on a separate page.
+This is useful when analyzing dirty and resident pages. The information can then be used to create an
order file to cluster commonly used/dirty globals onto the same page(s).
.It Fl not_for_dyld_shared_cache
Normally, the linker will add extra info to dylibs with -install_name starting with /usr/lib or
.Ss Obsolete Options
.Bl -tag
.It Fl segalign Ar value
-All segments must be page aligned.
+All segments must be page aligned.
.It Fl seglinkedit
Object files (MH_OBJECT) with a LINKEDIT segment are no longer supported. This option is obsolete.
.It Fl noseglinkedit
LD_PREBIND is no longer supported as a way to force on prebinding, so there no longer needs to
be a command line way to override LD_PREBIND. This option is obsolete.
.It Fl sect_diff_relocs Ar treatment
-This option was an attempt to warn about linking .o files compiled without -mdynamic-no-pic into
+This option was an attempt to warn about linking .o files compiled without -mdynamic-no-pic into
a main executable, but the false positive rate generated too much noise to make the option useful.
This option is obsolete.
.It Fl run_init_lazily
This option was removed in Mac OS X 10.2.
.It Fl single_module
-This is now the default so does not need to be specified.
+This is now the default so does not need to be specified.
.It Fl multi_module
Multi-modules in dynamic libraries have been ignored at runtime since Mac OS X 10.4.0. This option is obsolete.
.It Fl no_dead_strip_inits_and_terms
.It Fl b
Used with -A option to strip base file's symbols. This option is obsolete.
..It Fl M
-Obsolete option to produce a load map. Use -map option instead.
+Obsolete option to produce a load map. Use -map option instead.
.It Fl Sn
Don't strip any symbols. This is the default. This option is obsolete.
.It Fl Si
.It Fl X
Strip local symbols that begin with 'L'. This is the default. This option is obsolete.
.It Fl s
-Completely strip the output, including removing the symbol table. This file format variant is no longer supported.
+Completely strip the output, including removing the symbol table. This file format variant is no longer supported.
This option is obsolete.
.It Fl m
Don't treat multiple definitions as an error. This is no longer supported. This option is obsolete.
.It Fl y Ns symbol
-Display each file in which
+Display each file in which
.Ar symbol
is used. This was previously used to debug where an undefined symbol was used, but the linker now
-automatically prints out all usages. The -why_live option can also be used to display what kept
+automatically prints out all usages. The -why_live option can also be used to display what kept
a symbol from being dead striped. This option is obsolete.
.It Fl Y Ar number
Used to control how many occurrences of each symbol specified with -y would be shown. This option is obsolete.
Previously provided a way to warn or error if any of the symbol definitions in the output file matched any
definitions in dynamic library being linked. This option is obsolete.
.It Fl multiply_defined Ar treatment
-Previously provided a way to warn or error if any of the symbols used from a dynamic library were also
+Previously provided a way to warn or error if any of the symbols used from a dynamic library were also
available in another linked dynamic library. This option is obsolete.
.It Fl private_bundle
-Previously prevented errors when -flat_namespace, -bundle, and -bundle_loader were used and the bundle
+Previously prevented errors when -flat_namespace, -bundle, and -bundle_loader were used and the bundle
contained a definition that conflicted with a symbol in the main executable. The linker no longer
errors on such conflicts. This option is obsolete.
.It Fl noall_load
This is the default. This option is obsolete.
.It Fl seg_addr_table_filename Ar path
-Use
+Use
.Ar path
instead of the install name of the library for matching an entry in the seg_addr_table. This option is obsolete.
.It Fl sectorder Ar segname sectname orderfile
Replaced by more general -order_file option.
.It Fl sectorder_detail
-Produced extra logging about which entries from a sectorder entries were used. Replaced by -order_file_statistics.
-This option is obsolete.
+Produced extra logging about which entries from a sectorder entries were used. Replaced by -order_file_statistics.
+This option is obsolete.
.El
.Sh SEE ALSO
as(1), ar(1), cc(1), nm(1), otool(1) lipo(1),
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F9BA51610ECE58BE00D1D62E /* dyldinfo */,
F9A3DDCA0ED762B700C590B9 /* libprunetrie.a */,
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sourceTree = "<group>";
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F9A3DE0F0ED76D1900C590B9 /* prune_trie.h */,
F9A3DDD20ED762E400C590B9 /* PruneTrie.cpp */,
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F9023C3706D5A23E001BBF46 /* Frameworks */,
F97F5025070D0B6300B9FCD7 /* copy man page */,
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F9B670010DDA176100E6D0DA /* unwinddump */,
F971EED206D5ACF60041D381 /* ObjectDump */,
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F9BA51600ECE58BE00D1D62E /* dyldinfo */,
F9A3DDC90ED762B700C590B9 /* libprunetrie */,
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+ DEBUG_INFORMATION_FORMAT = dwarf;
+ GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
+ GCC_OPTIMIZATION_LEVEL = 0;
+ GCC_WARN_ABOUT_MISSING_PROTOTYPES = YES;
+ GCC_WARN_ABOUT_RETURN_TYPE = YES;
+ GCC_WARN_CHECK_SWITCH_STATEMENTS = YES;
+ GCC_WARN_SHADOW = YES;
+ GCC_WARN_UNUSED_FUNCTION = YES;
+ GCC_WARN_UNUSED_VALUE = YES;
+ GCC_WARN_UNUSED_VARIABLE = YES;
+ HEADER_SEARCH_PATHS = (
+ "$(SRCROOT)/src/ld",
+ "$(DEVELOPER_DIR)/usr/local/include",
+ "$(DT_TOOLCHAIN_DIR)/usr/local/include",
+ );
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+ PRODUCT_NAME = objcimageinfo;
+ SDKROOT = macosx.internal;
+ WARNING_CFLAGS = (
+ "-Wmost",
+ "-Wno-four-char-constants",
+ "-Wno-unknown-pragmas",
+ );
+ };
+ name = Debug;
+ };
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+ buildSettings = {
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+ GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
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+ HEADER_SEARCH_PATHS = (
+ "$(SRCROOT)/src/ld",
+ "$(DEVELOPER_DIR)/usr/local/include",
+ "$(DT_TOOLCHAIN_DIR)/usr/local/include",
+ );
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+ PRODUCT_NAME = objcimageinfo;
+ SDKROOT = macosx.internal;
+ WARNING_CFLAGS = (
+ "-Wmost",
+ "-Wno-four-char-constants",
+ "-Wno-unknown-pragmas",
+ );
+ };
+ name = Release;
+ };
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+ buildSettings = {
+ ARCHS = "$(ARCHS_STANDARD_64_BIT)";
+ CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+ CLANG_CXX_LIBRARY = "libc++";
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+ DEBUG_INFORMATION_FORMAT = dwarf;
+ GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
+ GCC_OPTIMIZATION_LEVEL = s;
+ GCC_PREPROCESSOR_DEFINITIONS = NDEBUG;
+ HEADER_SEARCH_PATHS = (
+ "$(SRCROOT)/src/ld",
+ "$(DEVELOPER_DIR)/usr/local/include",
+ "$(DT_TOOLCHAIN_DIR)/usr/local/include",
+ );
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+ PRODUCT_NAME = objcimageinfo;
+ SDKROOT = macosx.internal;
+ WARNING_CFLAGS = (
+ "-Wmost",
+ "-Wno-four-char-constants",
+ "-Wno-unknown-pragmas",
+ );
+ };
+ name = "Release-assert";
+ };
F933D91C09291AC90083EAC8 /* Debug */ = {
isa = XCBuildConfiguration;
buildSettings = {
GCC_WARN_UNUSED_VARIABLE = YES;
HEADER_SEARCH_PATHS = (
"$(DT_TOOLCHAIN_DIR)/usr/local/include",
- "$(DEVELOPER_DIR)/usr/local/include",
- "$(DEVELOPER_DIR)/usr/include",
+ "$(TOOLCHAIN_DIR)/usr/local/include",
);
INSTALL_PATH = "$(DT_VARIANT)/$(DT_TOOLCHAIN_DIR)/usr/bin";
LD_RUNPATH_SEARCH_PATHS = "@executable_path/../lib/";
"-Wl,-lazy_library,$(DT_TOOLCHAIN_DIR)/usr/lib/libLTO.dylib",
"@$(DERIVED_FILE_DIR)/linkExtras",
"-Wl,-exported_symbol,__mh_execute_header",
+ "-L$(DT_TOOLCHAIN_DIR)/usr/lib",
+ "-ltapi",
);
PREBINDING = NO;
PRODUCT_NAME = ld;
SDKROOT = macosx.internal;
SECTORDER_FLAGS = "";
+ TOOLCHAINS = osx;
VERSIONING_SYSTEM = "apple-generic";
WARNING_CFLAGS = "-Wall";
};
GCC_WARN_UNUSED_VARIABLE = YES;
HEADER_SEARCH_PATHS = (
"$(DT_TOOLCHAIN_DIR)/usr/local/include",
- "$(DEVELOPER_DIR)/usr/local/include",
- "$(DEVELOPER_DIR)/usr/include",
+ "$(TOOLCHAIN_DIR)/usr/local/include",
);
INSTALL_PATH = "$(DT_VARIANT)/$(DT_TOOLCHAIN_DIR)/usr/bin";
LD_RUNPATH_SEARCH_PATHS = "@executable_path/../lib/";
"-Wl,-lazy_library,$(DT_TOOLCHAIN_DIR)/usr/lib/libLTO.dylib",
"@$(DERIVED_FILE_DIR)/linkExtras",
"-Wl,-exported_symbol,__mh_execute_header",
+ "-L$(DT_TOOLCHAIN_DIR)/usr/lib",
+ "-ltapi",
);
PREBINDING = NO;
PRODUCT_NAME = ld;
SECTORDER_FLAGS = "";
STRIP_INSTALLED_PRODUCT = YES;
STRIP_STYLE = debugging;
+ TOOLCHAINS = osx;
VALID_ARCHS = "x86_64 i386 ppc";
VERSIONING_SYSTEM = "apple-generic";
WARNING_CFLAGS = "-Wall";
isa = XCBuildConfiguration;
buildSettings = {
ARCHS = "$(ARCHS_STANDARD_64_BIT)";
+ CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
CLANG_CXX_LIBRARY = "libc++";
COPY_PHASE_STRIP = NO;
DEBUG_INFORMATION_FORMAT = dwarf;
GCC_WARN_UNUSED_VALUE = YES;
GCC_WARN_UNUSED_VARIABLE = YES;
HEADER_SEARCH_PATHS = (
- "$(SRCROOT)/src/ld",
- "$(DEVELOPER_DIR)/usr/local/include",
"$(DT_TOOLCHAIN_DIR)/usr/local/include",
+ "$(TOOLCHAIN_DIR)/usr/local/include",
+ "$(SRCROOT)/src/ld",
);
INSTALL_PATH = "$(DT_VARIANT)/$(DT_TOOLCHAIN_DIR)/usr/local/bin";
ONLY_ACTIVE_ARCH = NO;
isa = XCBuildConfiguration;
buildSettings = {
ARCHS = "$(ARCHS_STANDARD_64_BIT)";
+ CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
CLANG_CXX_LIBRARY = "libc++";
COPY_PHASE_STRIP = YES;
DEBUG_INFORMATION_FORMAT = dwarf;
GCC_OPTIMIZATION_LEVEL = s;
GCC_PREPROCESSOR_DEFINITIONS = NDEBUG;
HEADER_SEARCH_PATHS = (
- "$(SRCROOT)/src/ld",
- "$(DEVELOPER_DIR)/usr/local/include",
"$(DT_TOOLCHAIN_DIR)/usr/local/include",
+ "$(TOOLCHAIN_DIR)/usr/local/include",
+ "$(SRCROOT)/src/ld",
);
INSTALL_PATH = "$(DT_VARIANT)/$(DT_TOOLCHAIN_DIR)/usr/local/bin";
OTHER_CPLUSPLUSFLAGS = (
GCC_DYNAMIC_NO_PIC = NO;
GCC_TREAT_WARNINGS_AS_ERRORS = NO;
ONLY_ACTIVE_ARCH = YES;
+ SDKROOT = macosx.internal;
};
name = Debug;
};
buildSettings = {
GCC_DYNAMIC_NO_PIC = NO;
GCC_TREAT_WARNINGS_AS_ERRORS = NO;
+ SDKROOT = macosx.internal;
};
name = Release;
};
buildSettings = {
GCC_DYNAMIC_NO_PIC = NO;
GCC_TREAT_WARNINGS_AS_ERRORS = NO;
+ SDKROOT = macosx.internal;
};
name = "Release-assert";
};
GCC_WARN_UNUSED_VARIABLE = YES;
HEADER_SEARCH_PATHS = (
"$(DT_TOOLCHAIN_DIR)/usr/local/include",
- "$(DEVELOPER_DIR)/usr/local/include",
- "$(DEVELOPER_DIR)/usr/include",
+ "$(TOOLCHAIN_DIR)/usr/local/include",
);
INSTALL_PATH = "$(DT_VARIANT)/$(DT_TOOLCHAIN_DIR)/usr/bin";
LD_RUNPATH_SEARCH_PATHS = "@executable_path/../lib/";
"-Wl,-lazy_library,$(DT_TOOLCHAIN_DIR)/usr/lib/libLTO.dylib",
"@$(DERIVED_FILE_DIR)/linkExtras",
"-Wl,-exported_symbol,__mh_execute_header",
+ "-L$(DT_TOOLCHAIN_DIR)/usr/lib",
+ "-ltapi",
);
PREBINDING = NO;
PRODUCT_NAME = ld;
SECTORDER_FLAGS = "";
STRIP_INSTALLED_PRODUCT = YES;
STRIP_STYLE = debugging;
+ TOOLCHAINS = osx;
VALID_ARCHS = "x86_64 i386 ppc";
VERSIONING_SYSTEM = "apple-generic";
WARNING_CFLAGS = "-Wall";
isa = XCBuildConfiguration;
buildSettings = {
ARCHS = "$(ARCHS_STANDARD_64_BIT)";
+ CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
CLANG_CXX_LIBRARY = "libc++";
COPY_PHASE_STRIP = YES;
DEBUG_INFORMATION_FORMAT = dwarf;
GCC_PREPROCESSOR_DEFINITIONS = NDEBUG;
GCC_WARN_ABOUT_INVALID_OFFSETOF_MACRO = NO;
HEADER_SEARCH_PATHS = (
- "$(SRCROOT)/src/ld",
- "$(DEVELOPER_DIR)/usr/local/include",
"$(DT_TOOLCHAIN_DIR)/usr/local/include",
+ "$(TOOLCHAIN_DIR)/usr/local/include",
+ "$(SRCROOT)/src/ld",
);
INSTALL_PATH = "$(DT_VARIANT)/$(DT_TOOLCHAIN_DIR)/usr/local/bin";
OTHER_CPLUSPLUSFLAGS = (
/* End XCBuildConfiguration section */
/* Begin XCConfigurationList section */
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+ isa = XCConfigurationList;
+ buildConfigurations = (
+ 83046A801C8FF23E00024A7E /* Debug */,
+ 83046A811C8FF23E00024A7E /* Release */,
+ 83046A821C8FF23E00024A7E /* Release-assert */,
+ );
+ defaultConfigurationIsVisible = 0;
+ defaultConfigurationName = "Release-assert";
+ };
F933D91B09291AC90083EAC8 /* Build configuration list for PBXNativeTarget "ld" */ = {
isa = XCConfigurationList;
buildConfigurations = (
#define CPU_SUBTYPE_ARM64_V8 1
#endif
-
#define ARM64_RELOC_UNSIGNED 0 // for pointers
#define ARM64_RELOC_SUBTRACTOR 1 // must be followed by a ARM64_RELOC_UNSIGNED
#define ARM64_RELOC_BRANCH26 2 // a B/BL instruction with 26-bit displacement
for ANARCH in ${RC_SUPPORTED_ARCHS}
do
- KNOWN_ARCHS=",armv4t,armv5,armv6,armv7,armv7f,armv7k,armv7s,armv6m,armv7m,armv7em,armv8,arm64,arm64v8,i386,x86_64,x86_64h,"
- FOUND=`echo "$KNOWN_ARCHS" | grep ",$ANARCH,"`
+ KNOWN_ARCHS=",armv4t,armv5,armv6,armv7,armv7f,armv7k,armv7s,armv6m,armv7m,armv7em,armv8,arm64,arm64v8,i386,x86_64,x86_64h,"
+ FOUND=`echo "$KNOWN_ARCHS" | grep ",$ANARCH,"`
if [ $FOUND ]; then
echo "#define SUPPORT_ARCH_$ANARCH 1" >> ${DERIVED_FILE_DIR}/configure.h
else
typedef Pointer64<LittleEndian> P;
};
+
#endif // __ARCHITECTURES__
virtual const uint8_t* getUUID() const = 0;
virtual bool bitcodeBundleCommand(uint64_t& cmdOffset, uint64_t& cmdEnd,
uint64_t& sectOffset, uint64_t& sectEnd) const = 0;
+ virtual void linkeditCmdInfo(uint64_t& offset, uint64_t& size) const = 0;
+ virtual void symbolTableCmdInfo(uint64_t& offset, uint64_t& size) const = 0;
+
};
template <typename A>
virtual const uint8_t* getUUID() const { return &_uuid[0]; }
virtual bool bitcodeBundleCommand(uint64_t& cmdOffset, uint64_t& cmdEnd,
uint64_t& sectOffset, uint64_t& sectEnd) const;
-
+ virtual void linkeditCmdInfo(uint64_t& offset, uint64_t& size) const;
+ virtual void symbolTableCmdInfo(uint64_t& offset, uint64_t& size) const;
+
+
private:
typedef typename A::P P;
typedef typename A::P::E E;
uint32_t commandsCount() const;
uint32_t threadLoadCommandSize() const;
uint8_t* copySingleSegmentLoadCommand(uint8_t* p) const;
- uint8_t* copySegmentLoadCommands(uint8_t* p) const;
+ uint8_t* copySegmentLoadCommands(uint8_t* p, uint8_t* base) const;
uint8_t* copyDyldInfoLoadCommand(uint8_t* p) const;
- uint8_t* copySymbolTableLoadCommand(uint8_t* p) const;
+ uint8_t* copySymbolTableLoadCommand(uint8_t* p, uint8_t* base) const;
uint8_t* copyDynamicSymbolTableLoadCommand(uint8_t* p) const;
uint8_t* copyDyldLoadCommand(uint8_t* p) const;
uint8_t* copyDylibIDLoadCommand(uint8_t* p) const;
std::vector<const char*> _subUmbrellaNames;
uint8_t _uuid[16];
mutable macho_uuid_command<P>* _uuidCmdInOutputBuffer;
+ mutable uint32_t _linkeditCmdOffset;
+ mutable uint32_t _symboltableCmdOffset;
std::vector< std::vector<const char*> > _linkerOptions;
static ld::Section _s_section;
ld::Atom::scopeTranslationUnit, ld::Atom::typeUnclassified,
ld::Atom::symbolTableNotIn, false, false, false,
(opts.outputKind() == Options::kPreload) ? ld::Atom::Alignment(0) : ld::Atom::Alignment(12) ),
- _options(opts), _state(state), _writer(writer), _address(0), _uuidCmdInOutputBuffer(NULL)
+ _options(opts), _state(state), _writer(writer), _address(0), _uuidCmdInOutputBuffer(NULL), _linkeditCmdOffset(0), _symboltableCmdOffset(0)
{
bzero(_uuid, 16);
_hasDyldInfoLoadCommand = opts.makeCompressedDyldInfo();
break;
}
}
- for (CStringSet::const_iterator it = _state.linkerOptionFrameworks.begin(); it != _state.linkerOptionFrameworks.end(); ++it) {
- const char* frameWorkName = *it;
+ for (const char* frameworkName : _state.unprocessedLinkerOptionFrameworks) {
std::vector<const char*>* lo = new std::vector<const char*>();
lo->push_back("-framework");
- lo->push_back(frameWorkName);
+ lo->push_back(frameworkName);
_linkerOptions.push_back(*lo);
};
- for (CStringSet::const_iterator it = _state.linkerOptionLibraries.begin(); it != _state.linkerOptionLibraries.end(); ++it) {
- const char* libName = *it;
+ for (const char* libName : _state.unprocessedLinkerOptionLibraries) {
std::vector<const char*>* lo = new std::vector<const char*>();
char * s = new char[strlen(libName)+3];
strcpy(s, "-l");
return false;
}
+template <typename A>
+void HeaderAndLoadCommandsAtom<A>::linkeditCmdInfo(uint64_t &offset, uint64_t &size) const
+{
+ offset = _linkeditCmdOffset;
+ size = sizeof(macho_segment_command<P>);
+}
+
+template <typename A>
+void HeaderAndLoadCommandsAtom<A>::symbolTableCmdInfo(uint64_t &offset, uint64_t &size) const
+{
+ offset = _symboltableCmdOffset;
+ size = sizeof(macho_symtab_command<P>);
+}
+
+
template <typename A>
uint64_t HeaderAndLoadCommandsAtom<A>::size() const
{
template <> uint32_t HeaderAndLoadCommandsAtom<arm64>::cpuType() const { return CPU_TYPE_ARM64; }
-
template <>
uint32_t HeaderAndLoadCommandsAtom<x86>::cpuSubType() const
{
template <typename A>
-uint8_t* HeaderAndLoadCommandsAtom<A>::copySegmentLoadCommands(uint8_t* p) const
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySegmentLoadCommands(uint8_t* p, uint8_t* base) const
{
// group sections into segments
std::vector<SegInfo> segs;
segCmd->set_initprot(si.initProt);
segCmd->set_nsects(si.nonHiddenSectionCount);
segCmd->set_flags(si.nonSectCreateSections ? 0 : SG_NORELOC); // FIXME, really should check all References
-
+ if ( strcmp(segCmd->segname(), "__LINKEDIT") == 0 )
+ _linkeditCmdOffset = p - base;
p += sizeof(macho_segment_command<P>);
macho_section<P>* msect = (macho_section<P>*)p;
for (std::vector<ld::Internal::FinalSection*>::iterator sit = si.sections.begin(); sit != si.sections.end(); ++sit) {
template <typename A>
-uint8_t* HeaderAndLoadCommandsAtom<A>::copySymbolTableLoadCommand(uint8_t* p) const
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySymbolTableLoadCommand(uint8_t* p, uint8_t* base) const
{
+ _symboltableCmdOffset = p - base;
// build LC_SYMTAB command
macho_symtab_command<P>* symbolTableCmd = (macho_symtab_command<P>*)p;
symbolTableCmd->set_cmd(LC_SYMTAB);
if ( _options.outputKind() == Options::kObjectFile )
p = this->copySingleSegmentLoadCommand(p);
else
- p = this->copySegmentLoadCommands(p);
+ p = this->copySegmentLoadCommands(p, buffer);
if ( _hasDylibIDLoadCommand )
p = this->copyDylibIDLoadCommand(p);
p = this->copyDyldInfoLoadCommand(p);
if ( _hasSymbolTableLoadCommand )
- p = this->copySymbolTableLoadCommand(p);
+ p = this->copySymbolTableLoadCommand(p, buffer);
if ( _hasDynamicSymbolTableLoadCommand )
p = this->copyDynamicSymbolTableLoadCommand(p);
ld::archive::File* archiveResult = ::archive::parse(p, len, info.path, info.modTime, info.ordinal, archOpts);
if ( archiveResult != NULL ) {
+
OSAtomicAdd64(len, &_totalArchiveSize);
OSAtomicIncrement32(&_totalArchivesLoaded);
return archiveResult;
}
}
-void InputFiles::logDylib(ld::File* file, bool indirect)
+void InputFiles::logDylib(ld::File* file, bool indirect, bool speculative)
{
if ( _options.traceDylibs() ) {
const char* fullPath = file->path();
// don't log upward dylibs when XBS is computing dependencies
logTraceInfo("[Logging for XBS] Used upward dynamic library: %s\n", fullPath);
}
+ else if ( (dylib != NULL ) && dylib->speculativelyLoaded() ) {
+ logTraceInfo("[Logging for XBS] Speculatively loaded dynamic library: %s\n", fullPath);
+ }
else {
- if ( indirect )
- logTraceInfo("[Logging for XBS] Used indirect dynamic library: %s\n", fullPath);
- else
+ if ( indirect ) {
+ if ( speculative )
+ logTraceInfo("[Logging for XBS] Speculatively loaded indirect dynamic library: %s\n", fullPath);
+ else
+ logTraceInfo("[Logging for XBS] Used indirect dynamic library: %s\n", fullPath);
+ }
+ else {
logTraceInfo("[Logging for XBS] Used dynamic library: %s\n", fullPath);
+ }
}
}
void InputFiles::logArchive(ld::File* file) const
{
- if ( _options.traceArchives() && (_archiveFilesLogged.count(file) == 0) ) {
+ if ( (_options.traceArchives() || _options.traceEmitJSON()) && (_archiveFilesLogged.count(file) == 0) ) {
// <rdar://problem/4947347> LD_TRACE_ARCHIVES should only print out when a .o is actually used from an archive
_archiveFilesLogged.insert(file);
const char* fullPath = file->path();
if ( realpath(fullPath, realName) != NULL )
fullPath = realName;
logTraceInfo("[Logging for XBS] Used static archive: %s\n", fullPath);
+
+ std::string archivePath(fullPath);
+ _archiveFilePaths.push_back(archivePath);
}
}
}
-ld::dylib::File* InputFiles::findDylib(const char* installPath, const char* fromPath)
+ld::dylib::File* InputFiles::findDylib(const char* installPath, const ld::dylib::File* fromDylib, bool speculative)
{
//fprintf(stderr, "findDylib(%s, %s)\n", installPath, fromPath);
InstallNameToDylib::iterator pos = _installPathToDylibs.find(installPath);
if ( dylibReader != NULL ) {
addDylib(dylibReader, info);
//_installPathToDylibs[strdup(installPath)] = dylibReader;
- this->logDylib(dylibReader, true);
+ this->logDylib(dylibReader, true, speculative);
return dylibReader;
}
else
}
}
}
- char newPath[MAXPATHLEN];
- // handle @loader_path
- if ( strncmp(installPath, "@loader_path/", 13) == 0 ) {
- strcpy(newPath, fromPath);
- char* addPoint = strrchr(newPath,'/');
- if ( addPoint != NULL )
- strcpy(&addPoint[1], &installPath[13]);
- else
- strcpy(newPath, &installPath[13]);
- installPath = newPath;
- }
- // note: @executable_path case is handled inside findFileUsingPaths()
- // search for dylib using -F and -L paths
- Options::FileInfo info = _options.findFileUsingPaths(installPath);
+
+ // search for dylib using -F and -L paths and expanding @ paths
+ Options::FileInfo info = _options.findIndirectDylib(installPath, fromDylib);
_indirectDylibOrdinal = _indirectDylibOrdinal.nextIndirectDylibOrdinal();
info.ordinal = _indirectDylibOrdinal;
info.options.fIndirectDylib = true;
//assert(_installPathToDylibs.find(installPath) != _installPathToDylibs.end());
//_installPathToDylibs[strdup(installPath)] = dylibReader;
addDylib(dylibReader, info);
- this->logDylib(dylibReader, true);
+ this->logDylib(dylibReader, true, speculative);
return dylibReader;
}
else
return true;
}
+ char realDylibPath[PATH_MAX];
+ if ( (realpath(path, realDylibPath) != NULL) && (strcmp(path, realDylibPath) != 0) ) {
+ return libraryAlreadyLoaded(realDylibPath);
+ }
+
return false;
}
void InputFiles::addLinkerOptionLibraries(ld::Internal& state, ld::File::AtomHandler& handler)
{
- if ( _options.outputKind() == Options::kObjectFile )
- return;
-
- // process frameworks specified in .o linker options
- for (CStringSet::const_iterator it = state.linkerOptionFrameworks.begin(); it != state.linkerOptionFrameworks.end(); ++it) {
- const char* frameworkName = *it;
- if ( state.linkerOptionFrameworksProcessed.count(frameworkName) )
- continue;
- Options::FileInfo info = _options.findFramework(frameworkName);
- if ( ! this->frameworkAlreadyLoaded(info.path, frameworkName) ) {
- info.ordinal = _linkerOptionOrdinal.nextLinkerOptionOrdinal();
- try {
- ld::File* reader = this->makeFile(info, true);
- ld::dylib::File* dylibReader = dynamic_cast<ld::dylib::File*>(reader);
- if ( dylibReader != NULL ) {
- if ( ! dylibReader->installPathVersionSpecific() ) {
+ if ( _options.outputKind() == Options::kObjectFile )
+ return;
+
+ while (! state.unprocessedLinkerOptionLibraries.empty() || ! state.unprocessedLinkerOptionFrameworks.empty()) {
+
+ // process frameworks specified in .o linker options
+ CStringSet newFrameworks = std::move(state.unprocessedLinkerOptionFrameworks);
+ state.unprocessedLinkerOptionFrameworks.clear();
+ for (const char* frameworkName : newFrameworks) {
+ if ( state.linkerOptionFrameworks.count(frameworkName) )
+ continue;
+ Options::FileInfo info = _options.findFramework(frameworkName);
+ if ( ! this->frameworkAlreadyLoaded(info.path, frameworkName) ) {
+ _linkerOptionOrdinal = _linkerOptionOrdinal.nextLinkerOptionOrdinal();
+ info.ordinal = _linkerOptionOrdinal;
+ try {
+ ld::File* reader = this->makeFile(info, true);
+ ld::dylib::File* dylibReader = dynamic_cast<ld::dylib::File*>(reader);
+ if ( dylibReader != NULL ) {
+ if ( ! dylibReader->installPathVersionSpecific() ) {
+ dylibReader->forEachAtom(handler);
+ dylibReader->setImplicitlyLinked();
+ dylibReader->setSpeculativelyLoaded();
+ this->addDylib(dylibReader, info);
+ }
+ }
+ else {
+ throwf("framework linker option at %s is not a dylib", info.path);
+ }
+ }
+ catch (const char* msg) {
+ warning("Auto-Linking supplied '%s', %s", info.path, msg);
+ }
+ }
+ state.linkerOptionFrameworks.insert(frameworkName);
+ }
+
+ // process libraries specified in .o linker options
+ // fixme optimize with std::move?
+ CStringSet newLibraries = std::move(state.unprocessedLinkerOptionLibraries);
+ state.unprocessedLinkerOptionLibraries.clear();
+ for (const char* libName : newLibraries) {
+ if ( state.linkerOptionLibraries.count(libName) )
+ continue;
+ Options::FileInfo info = _options.findLibrary(libName);
+ if ( ! this->libraryAlreadyLoaded(info.path) ) {
+ _linkerOptionOrdinal = _linkerOptionOrdinal.nextLinkerOptionOrdinal();
+ info.ordinal = _linkerOptionOrdinal;
+ try {
+ //<rdar://problem/17787306> -force_load_swift_libs
+ info.options.fForceLoad = _options.forceLoadSwiftLibs() && (strncmp(libName, "swift", 5) == 0);
+ ld::File* reader = this->makeFile(info, true);
+ ld::dylib::File* dylibReader = dynamic_cast<ld::dylib::File*>(reader);
+ ld::archive::File* archiveReader = dynamic_cast<ld::archive::File*>(reader);
+ if ( dylibReader != NULL ) {
dylibReader->forEachAtom(handler);
dylibReader->setImplicitlyLinked();
+ dylibReader->setSpeculativelyLoaded();
this->addDylib(dylibReader, info);
}
- }
- else {
- throwf("framework linker option at %s is not a dylib", info.path);
- }
- }
- catch (const char* msg) {
- warning("Auto-Linking supplied '%s', %s", info.path, msg);
- }
- }
- state.linkerOptionFrameworksProcessed.insert(frameworkName);
- }
- // process libraries specified in .o linker options
- for (CStringSet::const_iterator it = state.linkerOptionLibraries.begin(); it != state.linkerOptionLibraries.end(); ++it) {
- const char* libName = *it;
- if ( state.linkerOptionLibrariesProcessed.count(libName) )
- continue;
- Options::FileInfo info = _options.findLibrary(libName);
- if ( ! this->libraryAlreadyLoaded(info.path) ) {
- info.ordinal = _linkerOptionOrdinal.nextLinkerOptionOrdinal();
- try {
- //<rdar://problem/17787306> -force_load_swift_libs
- info.options.fForceLoad = _options.forceLoadSwiftLibs() && (strncmp(libName, "swift", 5) == 0);
- ld::File* reader = this->makeFile(info, true);
- ld::dylib::File* dylibReader = dynamic_cast<ld::dylib::File*>(reader);
- ld::archive::File* archiveReader = dynamic_cast<ld::archive::File*>(reader);
- if ( dylibReader != NULL ) {
- dylibReader->forEachAtom(handler);
- dylibReader->setImplicitlyLinked();
- this->addDylib(dylibReader, info);
- }
- else if ( archiveReader != NULL ) {
- _searchLibraries.push_back(LibraryInfo(archiveReader));
- if ( _options.dumpDependencyInfo() )
- _options.dumpDependency(Options::depArchive, archiveReader->path());
- //<rdar://problem/17787306> -force_load_swift_libs
- if (info.options.fForceLoad) {
- archiveReader->forEachAtom(handler);
+ else if ( archiveReader != NULL ) {
+ _searchLibraries.push_back(LibraryInfo(archiveReader));
+ if ( _options.dumpDependencyInfo() )
+ _options.dumpDependency(Options::depArchive, archiveReader->path());
+ //<rdar://problem/17787306> -force_load_swift_libs
+ if (info.options.fForceLoad) {
+ archiveReader->forEachAtom(handler);
+ }
}
- }
- else {
- throwf("linker option dylib at %s is not a dylib", info.path);
- }
- }
- catch (const char* msg) {
- warning("Auto-Linking supplied '%s', %s", info.path, msg);
- }
+ else {
+ throwf("linker option dylib at %s is not a dylib", info.path);
+ }
+ }
+ catch (const char* msg) {
+ warning("Auto-Linking supplied '%s', %s", info.path, msg);
+ }
+ }
+ state.linkerOptionLibraries.insert(libName);
}
- state.linkerOptionLibrariesProcessed.insert(libName);
}
}
pthread_mutex_init(&_parseLock, NULL);
pthread_cond_init(&_parseWorkReady, NULL);
pthread_cond_init(&_newFileAvailable, NULL);
+ _neededFileSlot = -1;
#endif
const std::vector<Options::FileInfo>& files = _options.getInputFiles();
if ( files.size() == 0 )
if (_s_logPThreads) printf("parsing index %u\n", slot);
try {
file = makeFile(entry, false);
- }
+ }
catch (const char *msg) {
if ( (strstr(msg, "architecture") != NULL) && !_options.errorOnOtherArchFiles() ) {
if ( _options.ignoreOtherArchInputFiles() ) {
// log direct readers
if ( ! info.options.fIndirectDylib )
- this->logDylib(reader, false);
+ this->logDylib(reader, false, false);
// update stats
_totalDylibsLoaded++;
{
ld::archive::File* archive = (ld::archive::File*)file;
// <rdar://problem/9740166> force loaded archives should be in LD_TRACE
- if ( (info.options.fForceLoad || _options.fullyLoadArchives()) && _options.traceArchives() )
+ if ( (info.options.fForceLoad || _options.fullyLoadArchives()) && (_options.traceArchives() || _options.traceEmitJSON()) )
logArchive(archive);
_searchLibraries.push_back(LibraryInfo(archive));
if ( _options.dumpDependencyInfo() )
ld::archive::File *archiveFile = lib.archive();
if ( dataSymbolOnly ) {
if ( archiveFile->justInTimeDataOnlyforEachAtom(name, handler) ) {
- if ( _options.traceArchives() )
+ if ( _options.traceArchives() || _options.traceEmitJSON())
logArchive(archiveFile);
_options.snapshot().recordArchive(archiveFile->path());
+ // DALLAS _state.archives.push_back(archiveFile);
// found data definition in static library, done
return true;
}
}
else {
if ( archiveFile->justInTimeforEachAtom(name, handler) ) {
- if ( _options.traceArchives() )
+ if ( _options.traceArchives() || _options.traceEmitJSON())
logArchive(archiveFile);
_options.snapshot().recordArchive(archiveFile->path());
// found definition in static library, done
}
// <rdar://problem/15002251> make implicit dylib order be deterministic by sorting by install_name
std::sort(implicitDylibs.begin(), implicitDylibs.end(), DylibByInstallNameSorter());
+
+ if ( _options.traceDylibs() ) {
+ for (ld::dylib::File* dylib : implicitDylibs) {
+ if ( dylib->speculativelyLoaded() && !dylib->explicitlyLinked() && dylib->providedExportAtom() ) {
+ const char* fullPath = dylib->path();
+ char realName[MAXPATHLEN];
+ if ( realpath(fullPath, realName) != NULL )
+ fullPath = realName;
+ logTraceInfo("[Logging for XBS] Used dynamic library: %s\n", fullPath);
+ }
+ }
+ }
state.dylibs.insert(state.dylibs.end(), implicitDylibs.begin(), implicitDylibs.end());
}
throw "dynamic main executables must link with libSystem.dylib";
}
+void InputFiles::archives(ld::Internal& state)
+{
+ for (const std::string path : _archiveFilePaths) {
+
+ state.archivePaths.push_back(path);
+ }
+}
+
} // namespace tool
} // namespace ld
InputFiles(Options& opts, const char** archName);
// implementation from ld::dylib::File::DylibHandler
- virtual ld::dylib::File* findDylib(const char* installPath, const char* fromPath);
+ virtual ld::dylib::File* findDylib(const char* installPath, const ld::dylib::File* fromDylib, bool speculative);
// iterates all atoms in initial files
void forEachInitialAtom(ld::File::AtomHandler&, ld::Internal& state);
// copy dylibs to link with in command line order
void dylibs(ld::Internal& state);
+ void archives(ld::Internal& state);
+
bool inferredArch() const { return _inferredArch; }
void addLinkerOptionLibraries(ld::Internal& state, ld::File::AtomHandler& handler);
ld::File* makeFile(const Options::FileInfo& info, bool indirectDylib);
ld::File* addDylib(ld::dylib::File* f, const Options::FileInfo& info);
void logTraceInfo (const char* format, ...) const;
- void logDylib(ld::File*, bool indirect);
+ void logDylib(ld::File*, bool indirect, bool speculative);
void logArchive(ld::File*) const;
void markExplicitlyLinkedDylibs();
void checkDylibClientRestrictions(ld::dylib::File*);
const Options& _options;
std::vector<ld::File*> _inputFiles;
mutable std::set<class ld::File*> _archiveFilesLogged;
+ mutable std::vector<std::string> _archiveFilePaths;
InstallNameToDylib _installPathToDylibs;
std::set<ld::dylib::File*> _allDylibs;
ld::dylib::File* _bundleLoader;
template <typename A>
void SymbolTableAtom<A>::encode()
{
- uint32_t symbolIndex = 0;
+ // Note: We lay out the symbol table so that the strings for the stabs (local) symbols are at the
+ // end of the string pool. The stabs strings are not used when calculated the UUID for the image.
+ // If the stabs strings were not last, the string offsets for all other symbols may very which would alter the UUID.
- // make nlist entries for all local symbols
- std::vector<const ld::Atom*>& localAtoms = this->_writer._localAtoms;
- std::vector<const ld::Atom*>& globalAtoms = this->_writer._exportedAtoms;
- _locals.reserve(localAtoms.size()+this->_state.stabs.size());
- this->_writer._localSymbolsStartIndex = 0;
- // make nlist entries for all debug notes
- _stabsIndexStart = symbolIndex;
- _stabsStringsOffsetStart = this->_writer._stringPoolAtom->currentOffset();
- for (std::vector<ld::relocatable::File::Stab>::const_iterator sit=this->_state.stabs.begin(); sit != this->_state.stabs.end(); ++sit) {
- macho_nlist<P> entry;
- entry.set_n_type(sit->type);
- entry.set_n_sect(sectionIndexForStab(*sit));
- entry.set_n_desc(sit->desc);
- entry.set_n_value(valueForStab(*sit));
- entry.set_n_strx(stringOffsetForStab(*sit, this->_writer._stringPoolAtom));
- _locals.push_back(entry);
- ++symbolIndex;
- }
- _stabsIndexEnd = symbolIndex;
- _stabsStringsOffsetEnd = this->_writer._stringPoolAtom->currentOffset();
- for (std::vector<const ld::Atom*>::const_iterator it=localAtoms.begin(); it != localAtoms.end(); ++it) {
- const ld::Atom* atom = *it;
- if ( this->addLocal(atom, this->_writer._stringPoolAtom) )
- this->_writer._atomToSymbolIndex[atom] = symbolIndex++;
- }
- this->_writer._localSymbolsCount = symbolIndex;
-
+ // reserve space for local symbols
+ uint32_t localsCount = _state.stabs.size() + this->_writer._localAtoms.size();
// make nlist entries for all global symbols
+ std::vector<const ld::Atom*>& globalAtoms = this->_writer._exportedAtoms;
_globals.reserve(globalAtoms.size());
- this->_writer._globalSymbolsStartIndex = symbolIndex;
+ uint32_t symbolIndex = localsCount;
+ this->_writer._globalSymbolsStartIndex = localsCount;
for (std::vector<const ld::Atom*>::const_iterator it=globalAtoms.begin(); it != globalAtoms.end(); ++it) {
const ld::Atom* atom = *it;
this->addGlobal(atom, this->_writer._stringPoolAtom);
this->_writer._atomToSymbolIndex[*it] = symbolIndex++;
}
this->_writer._importSymbolsCount = symbolIndex - this->_writer._importSymbolsStartIndex;
+
+ // go back to start and make nlist entries for all local symbols
+ std::vector<const ld::Atom*>& localAtoms = this->_writer._localAtoms;
+ _locals.reserve(localsCount);
+ symbolIndex = 0;
+ this->_writer._localSymbolsStartIndex = 0;
+ _stabsIndexStart = 0;
+ _stabsStringsOffsetStart = this->_writer._stringPoolAtom->currentOffset();
+ for (const ld::relocatable::File::Stab& stab : _state.stabs) {
+ macho_nlist<P> entry;
+ entry.set_n_type(stab.type);
+ entry.set_n_sect(sectionIndexForStab(stab));
+ entry.set_n_desc(stab.desc);
+ entry.set_n_value(valueForStab(stab));
+ entry.set_n_strx(stringOffsetForStab(stab, this->_writer._stringPoolAtom));
+ _locals.push_back(entry);
+ ++symbolIndex;
+ }
+ _stabsIndexEnd = symbolIndex;
+ _stabsStringsOffsetEnd = this->_writer._stringPoolAtom->currentOffset();
+ for (const ld::Atom* atom : localAtoms) {
+ if ( this->addLocal(atom, this->_writer._stringPoolAtom) )
+ this->_writer._atomToSymbolIndex[atom] = symbolIndex++;
+ }
+ this->_writer._localSymbolsCount = symbolIndex;
}
template <typename A>
#include <spawn.h>
#include <cxxabi.h>
#include <Availability.h>
+#include <tapi/tapi.h>
#include <vector>
#include <map>
}
if ( options.dumpDependencyInfo() )
options.dumpDependency(Options::depNotFound, p);
+// fprintf(stderr, "not found: %s\n", p);
return false;
}
fSetuidSafe(false), fImplicitlyLinkPublicDylibs(true), fAddCompactUnwindEncoding(true),
fWarnCompactUnwind(false), fRemoveDwarfUnwindIfCompactExists(false),
fAutoOrderInitializers(true), fOptimizeZeroFill(true), fMergeZeroFill(false), fLogObjectFiles(false),
- fLogAllFiles(false), fTraceDylibs(false), fTraceIndirectDylibs(false), fTraceArchives(false),
+ fLogAllFiles(false), fTraceDylibs(false), fTraceIndirectDylibs(false), fTraceArchives(false), fTraceEmitJSON(false),
fOutputSlidable(false), fWarnWeakExports(false),
fObjcGcCompaction(false), fObjCGc(false), fObjCGcOnly(false),
fDemangle(false), fTLVSupport(false),
fGenerateDtraceDOF(true), fAllowBranchIslands(true), fTraceSymbolLayout(false),
fMarkAppExtensionSafe(false), fCheckAppExtensionSafe(false), fForceLoadSwiftLibs(false),
fSharedRegionEncodingV2(false), fUseDataConstSegment(false),
- fUseDataConstSegmentForceOn(false), fUseDataConstSegmentForceOff(false),
+ fUseDataConstSegmentForceOn(false), fUseDataConstSegmentForceOff(false), fUseTextExecSegment(false),
fBundleBitcode(false), fHideSymbols(false), fVerifyBitcode(false),
fReverseMapUUIDRename(false), fDeDupe(true), fVerboseDeDupe(false),
fReverseMapPath(NULL), fLTOCodegenOnly(false),
- fIgnoreAutoLink(false), fAllowDeadDups(false), fBitcodeKind(kBitcodeProcess),
+ fIgnoreAutoLink(false), fAllowDeadDups(false), fAllowWeakImports(true), fBitcodeKind(kBitcodeProcess),
fPlatform(kPlatformUnknown), fDebugInfoStripping(kDebugInfoMinimal), fTraceOutputFile(NULL),
- fMacVersionMin(ld::macVersionUnset), fIOSVersionMin(ld::iOSVersionUnset),
+ fMacVersionMin(ld::macVersionUnset), fIOSVersionMin(ld::iOSVersionUnset), fWatchOSVersionMin(ld::wOSVersionUnset),
fSaveTempFiles(false), fSnapshotRequested(false), fPipelineFifo(NULL),
- fDependencyInfoPath(NULL), fDependencyFileDescriptor(-1), fMaxDefaultCommonAlign(0), fFilePreference(kModTime),
- fForceTextBasedStub(false)
+ fDependencyInfoPath(NULL), fDependencyFileDescriptor(-1), fMaxDefaultCommonAlign(0)
{
this->checkForClassic(argc, argv);
this->parsePreCommandLineEnvironmentSettings();
return it->init;
}
}
- if ( strcmp(segName, "__PAGEZERO") == 0 ) {
- return 0;
+ if ( strcmp(segName, "__TEXT") == 0 ) {
+ return ( fUseTextExecSegment ? VM_PROT_READ : (VM_PROT_READ | VM_PROT_EXECUTE) );
}
- else if ( strcmp(segName, "__TEXT") == 0 ) {
+ else if ( strcmp(segName, "__TEXT_EXEC") == 0 ) {
return VM_PROT_READ | VM_PROT_EXECUTE;
}
+ else if ( strcmp(segName, "__PAGEZERO") == 0 ) {
+ return 0;
+ }
else if ( strcmp(segName, "__LINKEDIT") == 0 ) {
return VM_PROT_READ;
}
if ( (strcmp(it->segmentName, segName) == 0) && (strcmp(it->sectionName, sectName) == 0) )
return true;
}
+ if ( fEncryptable && (strcmp(sectName, "__oslogstring") == 0) && (strcmp(segName, "__TEXT") == 0) )
+ return true;
+
return false;
}
if ( (strcmp(it->segmentName, segName) == 0) && (strcmp(it->sectionName, sectName) == 0) )
return it->alignment;
}
+ if ( fEncryptable && (strcmp(sectName, "__oslogstring") == 0) && (strcmp(segName, "__TEXT") == 0) )
+ return __builtin_ctz(fSegmentAlignment);
+
return 0;
}
switch ( type ) {
case CPU_TYPE_I386:
case CPU_TYPE_X86_64:
- if ( (fPlatform == kPlatformOSX) && (fOutputKind != Options::kObjectFile) ) {
+ if ( (fPlatform == kPlatformOSX) && (fOutputKind != Options::kObjectFile) && (fMacVersionMin == ld::macVersionUnset) ) {
#ifdef DEFAULT_MACOSX_MIN_VERSION
warning("-macosx_version_min not specified, assuming " DEFAULT_MACOSX_MIN_VERSION);
setMacOSXVersionMin(DEFAULT_MACOSX_MIN_VERSION);
break;
case CPU_TYPE_ARM:
case CPU_TYPE_ARM64:
- if ( (fPlatform == kPlatformiOS) && (fOutputKind != Options::kObjectFile) ) {
+ if ( (fMacVersionMin == ld::macVersionUnset) && (fIOSVersionMin == ld::iOSVersionUnset) && (fOutputKind != Options::kObjectFile) ) {
#if defined(DEFAULT_IPHONEOS_MIN_VERSION)
warning("-ios_version_min not specified, assuming " DEFAULT_IPHONEOS_MIN_VERSION);
setIOSVersionMin(DEFAULT_IPHONEOS_MIN_VERSION);
bool found = tbdInfo.checkFileExists(*this, newPath.c_str());
if ( fTraceDylibSearching )
printf("[Logging for XBS]%sfound library: '%s'\n", (found ? " " : " not "), newPath.c_str());
- if ( found ) {
- if ( (fFilePreference == kTextBasedStub) || fForceTextBasedStub ) {
- result = tbdInfo;
- return true;
- } else {
- break;
- }
- }
+ if ( found )
+ break;
}
+ // If we found a text-based stub file, check if it should be used.
+ if ( !tbdInfo.missing() ) {
+ if (tapi::LinkerInterfaceFile::shouldPreferTextBasedStubFile(tbdInfo.path)) {
+ result = tbdInfo;
+ return true;
+ }
+ }
FileInfo dylibInfo;
{
bool found = dylibInfo.checkFileExists(*this, path.c_str());
if ( fTraceDylibSearching )
printf("[Logging for XBS]%sfound library: '%s'\n", (found ? " " : " not "), path.c_str());
- if ( found && (fFilePreference == kMachO) ) {
- result = dylibInfo;
- return true;
- }
}
- if ( !dylibInfo.missing() && tbdInfo.missing() ) {
- result = dylibInfo;
+ // There is only a text-based stub file.
+ if ( !tbdInfo.missing() && dylibInfo.missing() ) {
+ result = tbdInfo;
return true;
}
- else if ( dylibInfo.missing() && !tbdInfo.missing() ) {
- result = tbdInfo;
+ // There is only a dynamic library file.
+ else if ( tbdInfo.missing() && !dylibInfo.missing() ) {
+ result = dylibInfo;
return true;
}
- else if ( !dylibInfo.missing() && !tbdInfo.missing() ) {
- if ( dylibInfo.modTime == tbdInfo.modTime ) {
+ // There are both - a text-based stub file and a dynamic library file.
+ else if ( !tbdInfo.missing() && !dylibInfo.missing() ) {
+ // If the files are still in synv we can use and should use the text-based stub file.
+ if (tapi::LinkerInterfaceFile::areEquivalent(tbdInfo.path, dylibInfo.path)) {
result = tbdInfo;
- return true;
}
+ // Otherwise issue a warning and fall-back to the dynamic library file.
else {
- // <rdar://problem/24459693> Disable false warning about out-of-sync .tbd files.
- //warning("text-based stub file %s and library file %s are out of sync. Falling back to library file for linking.", tbdInfo.path, dylibInfo.path);
+ warning("text-based stub file %s and library file %s are out of sync. Falling back to library file for linking.", tbdInfo.path, dylibInfo.path);
result = dylibInfo;
- return true;
+
}
+ return true;
}
return false;
}
-Options::FileInfo Options::findFile(const std::string &path) const
+static bool startsWith(const std::string& str, const std::string& prefix)
+{
+ return (str.compare(0, prefix.length(), prefix) == 0);
+}
+
+static std::string getDirPath(const std::string& path)
+{
+ std::string::size_type lastSlashPos = path.find_last_of('/');
+ if ( lastSlashPos == std::string::npos )
+ return "./";
+ else
+ return path.substr(0, lastSlashPos+1);
+}
+
+Options::FileInfo Options::findFile(const std::string &path, const ld::dylib::File* fromDylib) const
{
FileInfo result;
return result;
}
}
+
+ // expand @ variables
+ if ( path[0] == '@' ) {
+ if ( startsWith(path, "@executable_path/") && (fExecutablePath != nullptr) ) {
+ std::string exeBasedPath = getDirPath(fExecutablePath) + &path[17];
+ if ( findFile(exeBasedPath, {".tbd"}, result) )
+ return result;
+ }
+ else if ( startsWith(path, "@loader_path/") && (fromDylib != nullptr) ) {
+ char absPath[PATH_MAX];
+ if ( realpath(fromDylib->path(), absPath) != NULL ) {
+ std::string loaderBasedPath = getDirPath(fromDylib->path()) + &path[13];
+ if ( findFile(loaderBasedPath, {".tbd"}, result) )
+ return result;
+ }
+ }
+ else if ( startsWith(path, "@rpath/") ) {
+ // first search any LC_RPATH supplied by dyld that re-exports dylib to be found
+ if ( fromDylib != nullptr ) {
+ for (const char* rp : fromDylib->rpaths() ) {
+ std::string rpath = rp;
+ // handle dylib that has LC_RPATH = @loader_path/blah
+ if ( startsWith(rpath, "@loader_path/") ) {
+ char absPath[PATH_MAX];
+ if ( realpath(fromDylib->path(), absPath) != NULL )
+ rpath = getDirPath(absPath) + &rpath[13];
+ else
+ rpath = getDirPath(fromDylib->path()) + &rpath[13];
+ }
+ std::string rpathBasedPath = rpath + "/" + &path[6];
+ if ( findFile(rpathBasedPath, {".tbd"}, result) )
+ return result;
+ }
+ }
+ }
+ }
+
// try raw path
if ( findFile(path, {".tbd"}, result) )
return result;
- // try @executable_path substitution
- if ( (path.find("@executable_path/") == 0) && (fExecutablePath != nullptr) ) {
- char newPath[strlen(fExecutablePath) + path.size()];
- strcpy(newPath, fExecutablePath);
- char* addPoint = strrchr(newPath,'/');
- if ( addPoint != nullptr )
- strcpy(&addPoint[1], &path[17]);
- else
- strcpy(newPath, &path[17]);
-
- if ( findFile(newPath, {".tbd"}, result) )
- return result;
- }
-
// not found
throwf("file not found: %s", path.c_str());
}
-Options::FileInfo Options::findFileUsingPaths(const std::string &path) const
+// search for indirect dylib first using -F and -L paths first
+Options::FileInfo Options::findIndirectDylib(const std::string& installName, const ld::dylib::File* fromDylib) const
{
FileInfo result;
- auto lastSlashPos = path.find_last_of('/');
+ auto lastSlashPos = installName.find_last_of('/');
auto pos = ( lastSlashPos != std::string::npos ) ? lastSlashPos + 1 : 0;
- auto leafName = path.substr(pos);
+ auto leafName = installName.substr(pos);
// Is this in a framework?
// /path/Foo.framework/Foo ==> true (Foo)
bool isFramework = false;
if ( lastSlashPos != std::string::npos ) {
auto frameworkDir = std::string("/").append(leafName).append(".framework/");
- if ( path.rfind(frameworkDir) != std::string::npos )
+ if ( installName.rfind(frameworkDir) != std::string::npos )
isFramework = true;
}
// don't need to try variations, just paths. We do need to add the additional bits
// onto the framework path though.
if ( isFramework ) {
- auto endPos = path.rfind(".framework");
- auto beginPos = path.find_last_of('/', endPos);
- auto leafPath = path.substr(beginPos);
+ auto endPos = installName.rfind(".framework");
+ auto beginPos = installName.find_last_of('/', endPos);
+ auto leafPath = installName.substr(beginPos);
for (const auto* dir : fFrameworkSearchPaths) {
auto possiblePath = dir + leafPath;
if ( findFile(possiblePath, {".tbd"}, result) )
// <rdar://problem/5427952> ld64's re-export cycle detection logic prevents use of X11 libGL on Leopard
bool embeddedDylib = ( (leafName.size() > 6)
&& (leafName.find(".dylib", leafName.size()-6) != std::string::npos)
- && (path.find(".framework/") != std::string::npos) );
+ && (installName.find(".framework/") != std::string::npos) );
if ( !embeddedDylib ) {
for (const auto* dir : fLibrarySearchPaths) {
//fprintf(stderr,"Finding Library: %s/%s\n", dir, leafName);
}
// If we didn't find it fall back to findFile.
- return findFile(path);
+ return findFile(installName, fromDylib);
}
// order files override auto-ordering
fAutoOrderInitializers = false;
+ // <rdar://problem/24856050> ld64 should prefer OrderFiles from the SDK over the ones in /
+ for (const char* sdkPath : fSDKPaths) {
+ char fullPath[PATH_MAX];
+ strlcpy(fullPath, sdkPath, PATH_MAX);
+ strlcat(fullPath, "/", PATH_MAX);
+ strlcat(fullPath, path, PATH_MAX);
+ struct stat statBuffer;
+ if ( stat(fullPath, &statBuffer) == 0 ) {
+ path = strdup(fullPath);
+ break;
+ }
+ }
+
// read in whole file
int fd = ::open(path, O_RDONLY, 0);
if ( fd == -1 )
if ( fOverridePathlibLTO == NULL )
throw "missing argument to -lto_library";
}
+ else if ( strcmp(arg, "-cache_path_lto") == 0 ) {
+ fLtoCachePath = argv[++i];
+ if ( fLtoCachePath == NULL )
+ throw "missing argument to -cache_path_lto";
+ }
+ else if ( strcmp(arg, "-prune_interval_lto") == 0 ) {
+ const char* value = argv[++i];
+ if ( value == NULL )
+ throw "missing argument to -prune_interval_lto";
+ char* endptr;
+ fLtoPruneInterval = strtoul(value, &endptr, 10);
+ if ( *endptr != '\0')
+ throw "invalid argument for -prune_interval_lto";
+ }
+ else if ( strcmp(arg, "-prune_after_lto") == 0 ) {
+ const char* value = argv[++i];
+ if ( value == NULL )
+ throw "missing argument to -prune_after_lto";
+ char* endptr;
+ fLtoPruneAfter = strtoul(value, &endptr, 10);
+ if ( *endptr != '\0')
+ throw "invalid argument for -prune_after_lto";
+ }
+ else if ( strcmp(arg, "-max_relative_cache_size_lto") == 0 ) {
+ const char* value = argv[++i];
+ if ( value == NULL )
+ throw "missing argument to -max_relative_cache_size_lto";
+ char* endptr;
+ fLtoMaxCacheSize = strtoul(value, &endptr, 10);
+ if ( *endptr != '\0')
+ throw "invalid argument for -max_relative_cache_size_lto";
+ if (fLtoMaxCacheSize > 100)
+ throw "Expect a value between 0 and 100 for -max_relative_cache_size_lto";
+ }
else if ( (arg[1] == 'l') && (strncmp(arg,"-lazy_",6) !=0) ) {
snapshotArgCount = 0;
FileInfo info = findLibrary(&arg[2]);
fUseDataConstSegmentForceOff = true;
cannotBeUsedWithBitcode(arg);
}
+ else if ( strcmp(arg, "-text_exec") == 0 ) {
+ fUseTextExecSegment = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-add_split_seg_info") == 0) {
+ fSharedRegionEligible = true;
+ cannotBeUsedWithBitcode(arg);
+ }
else if ( strcmp(arg, "-no_deduplicate") == 0 ) {
fDeDupe = false;
}
}
fMaxDefaultCommonAlign = alignment;
}
- else if ( strcmp(arg, "-prefer-mod-time-check") == 0 ) {
- fFilePreference = kModTime;
- }
- else if ( strcmp(arg, "-prefer-text-based-stub-file") == 0 ) {
- fFilePreference = kTextBasedStub;
- }
- else if ( strcmp(arg, "-prefer-macho-file") == 0 ) {
- fFilePreference = kMachO;
+ else if ( strcmp(argv[i], "-no_weak_imports") == 0 ) {
+ fAllowWeakImports = false;
}
// put this last so that it does not interfer with other options starting with 'i'
else if ( strncmp(arg, "-i", 2) == 0 ) {
const char* ltoVers = lto::version();
if ( ltoVers != NULL )
fprintf(stderr, "LTO support using: %s\n", ltoVers);
+ fprintf(stderr, "TAPI support using: %s\n", tapi::Version::getFullVersionAsString().c_str());
exit(0);
}
}
fTraceDylibs = true;
fTraceIndirectDylibs = true;
}
+
+ if ((getenv("LD_TRACE_DEPENDENTS") != NULL)) {
+
+ fTraceEmitJSON = true;
+ }
if (getenv("RC_TRACE_DYLIB_SEARCHING") != NULL) {
fTraceDylibSearching = true;
if (getenv("LD_PRINT_OPTIONS") != NULL)
fPrintOptions = true;
- if (fTraceDylibs || fTraceArchives)
+ if (fTraceDylibs || fTraceArchives || fTraceEmitJSON)
fTraceOutputFile = getenv("LD_TRACE_FILE");
if (getenv("LD_PRINT_ORDER_FILE_STATISTICS") != NULL)
if (pipeFdString != NULL) {
fPipelineFifo = pipeFdString;
}
-
- // Workaround for rdar://problem/24301175
- if ((getenv("RC_XBS") != NULL) && !(getenv("RC_BUILDIT") != NULL))
- fForceTextBasedStub = true;
}
// determine if info for shared region should be added
if ( fOutputKind == Options::kDynamicLibrary ) {
- if ( minOS(ld::mac10_5, ld::iOS_3_1) )
+ if ( minOS(ld::mac10_5, ld::iOS_3_1) && !fTargetIOSSimulator )
if ( !fPrebind && !fSharedRegionEligibleForceOff )
if ( (strncmp(this->installPath(), "/usr/lib/", 9) == 0)
|| (strncmp(this->installPath(), "/System/Library/", 16) == 0) )
if ( fUseDataConstSegmentForceOn ) {
fUseDataConstSegment = true;
}
+ // A -kext for iOS 10 ==> -data_const, -text_exec, -add_split_seg_info
+ if ( (fOutputKind == Options::kKextBundle) && minOS(ld::mac10_Future, ld::iOS_10_0) && (fArchitecture == CPU_TYPE_ARM64) ) {
+ fUseDataConstSegment = true;
+ fUseTextExecSegment = true;
+ fSharedRegionEligible = true;
+ }
if ( fUseDataConstSegment ) {
addSectionRename("__DATA", "__got", "__DATA_CONST", "__got");
addSectionRename("__DATA", "__la_symbol_ptr", "__DATA_CONST", "__la_symbol_ptr");
addSectionRename("__DATA", "__objc_imageinfo", "__DATA_CONST", "__objc_imageinfo");
addSectionRename("__DATA", "__objc_const", "__DATA_CONST", "__objc_const");
}
+ if ( fUseTextExecSegment ) {
+ addSectionRename("__TEXT", "__text", "__TEXT_EXEC", "__text");
+ addSectionRename("__TEXT", "__stubs", "__TEXT_EXEC", "__stubs");
+ }
// Use V2 shared cache info when targetting newer OSs
- if ( fSharedRegionEligible && minOS(ld::mac10_Future, ld::iOS_9_0)) {
+ if ( fSharedRegionEligible && minOS(ld::mac10_12, ld::iOS_9_0)) {
fSharedRegionEncodingV2 = true;
+ // <rdar://problem/24772435> only use v2 for Swift dylibs on Mac OS X
+ if ( (fPlatform == kPlatformOSX) && (strncmp(this->installPath(), "/System/Library/PrivateFrameworks/Swift/", 40) != 0) )
+ fSharedRegionEncodingV2 = false;
fIgnoreOptimizationHints = true;
}
fEncryptable = false;
break;
}
- if ( (fArchitecture != CPU_TYPE_ARM) && (fArchitecture != CPU_TYPE_ARM64) )
+ if ( (fArchitecture != CPU_TYPE_ARM) && (fArchitecture != CPU_TYPE_ARM64)
+ )
fEncryptable = false;
if ( fEncryptableForceOn )
fEncryptable = true;
case CPU_TYPE_I386:
case CPU_TYPE_ARM64:
fEnforceDylibSubtypesMatch = false;
- fAllowCpuSubtypeMismatches = true;
break;
}
fCanUseUpwardDylib = true;
// MacOSX 10.7 defaults to PIE
- if ( ((fArchitecture == CPU_TYPE_X86_64) || (fArchitecture == CPU_TYPE_I386))
+ if ( (fArchitecture == CPU_TYPE_I386)
&& (fOutputKind == kDynamicExecutable)
&& (fMacVersionMin >= ld::mac10_7) ) {
fPositionIndependentExecutable = true;
fPositionIndependentExecutable = true;
}
+ // <rdar://problem/24535196> x86_64 defaults PIE (regardless of minOS version)
+ if ( (fArchitecture == CPU_TYPE_X86_64) && (fOutputKind == kDynamicExecutable) && (fMacVersionMin >= ld::mac10_6) )
+ fPositionIndependentExecutable = true;
+
// Simulator defaults to PIE
if ( fTargetIOSSimulator && (fOutputKind == kDynamicExecutable) )
fPositionIndependentExecutable = true;
fPositionIndependentExecutable = false;
// arm64 is always PIE
- if ( (fArchitecture == CPU_TYPE_ARM64) && (fOutputKind == kDynamicExecutable) ) {
+ if ( ((fArchitecture == CPU_TYPE_ARM64)
+ )
+ && (fOutputKind == kDynamicExecutable) ) {
fPositionIndependentExecutable = true;
+ if ( fDisablePositionIndependentExecutable )
+ warning("-no_pie ignored for arm64");
}
// set fOutputSlidable
if ( fMacVersionMin >= ld::mac10_7 ) {
fTLVSupport = true;
}
- else if ( (fArchitecture == CPU_TYPE_ARM64) && min_iOS(ld::iOS_8_0) ) {
+ else if ( ((fArchitecture == CPU_TYPE_ARM64)
+ )
+ && min_iOS(ld::iOS_8_0) ) {
fTLVSupport = true;
}
else if ( (fArchitecture == CPU_TYPE_ARM) && min_iOS(ld::iOS_9_0) ) {
case Options::kDynamicLibrary:
case Options::kDynamicBundle:
case Options::kDyld:
- if ( (fArchitecture == CPU_TYPE_ARM64)
+ if ( ((fArchitecture == CPU_TYPE_ARM64)
+ )
|| ((fArchitecture == CPU_TYPE_ARM) && min_iOS(ld::iOS_7_0)) ) {
fSegmentAlignment = 4096*4;
}
case Options::kStaticExecutable:
case Options::kKextBundle:
// <rdar://problem/14676611> 16KB segments for arm64 kexts
- if ( (fArchitecture == CPU_TYPE_ARM64) && min_iOS(ld::iOS_9_0) ) {
+ if ( ((fArchitecture == CPU_TYPE_ARM64)
+ )
+ && min_iOS(ld::iOS_9_0) ) {
fSegmentAlignment = 4096*4;
}
break;
// zero page size not specified on command line, set default
switch (fArchitecture) {
case CPU_TYPE_I386:
- case CPU_TYPE_ARM:
+ case CPU_TYPE_ARM:
// first 4KB for 32-bit architectures
fZeroPageSize = 0x1000;
break;
if ( (fOutputKind != Options::kDynamicExecutable) && (fDyldEnvironExtras.size() != 0) )
throw "-dyld_env can only used used when created main executables";
- // -segment_order can only be used with -preload
- if ( !fSegmentOrder.empty() && (fOutputKind != Options::kPreload) )
+ // -segment_order can only be used with -preload or -static
+ if ( !fSegmentOrder.empty() && ((fOutputKind != Options::kPreload) && (fOutputKind != kStaticExecutable)) )
throw "-segment_order can only used used with -preload output";
// warn about bitcode option combinations
if ( !min_iOS(ld::iOS_8_0) && (fDylibInstallName[0] == '@') && !fEncryptableForceOff )
warning("embedded dylibs/frameworks only run on iOS 8 or later");
}
+
+
+ // produce nicer error when no input
+ if ( fInputFiles.empty() ) {
+ throw "no object files specified";
+ }
}
}
// Create an empty FileInfo. The path can be set implicitly by checkFileExists().
- FileInfo() : path(NULL), fileLen(0), modTime(0), options(), fromFileList(false) {};
+ FileInfo() : path(NULL), fileLen(0), modTime(-1), options(), fromFileList(false) {};
// Create a FileInfo for a specific path, but does not stat the file.
- FileInfo(const char *_path) : path(strdup(_path)), fileLen(0), modTime(0), options(), fromFileList(false) {};
+ FileInfo(const char *_path) : path(strdup(_path)), fileLen(0), modTime(-1), options(), fromFileList(false) {};
~FileInfo() { if (path) ::free((void*)path); }
// Returns true if a previous call to checkFileExists() succeeded.
// Returns false if the file does not exist of checkFileExists() has never been called.
- bool missing() const { return modTime==0; }
+ bool missing() const { return modTime == -1; }
};
struct ExtraSection {
bool ignoreOtherArchInputFiles() const { return fIgnoreOtherArchFiles; }
bool traceDylibs() const { return fTraceDylibs; }
bool traceArchives() const { return fTraceArchives; }
+ bool traceEmitJSON() const { return fTraceEmitJSON; }
bool deadCodeStrip() const { return fDeadStrip; }
UndefinedTreatment undefinedTreatment() const { return fUndefinedTreatment; }
ld::MacVersionMin macosxVersionMin() const { return fMacVersionMin; }
CommonsMode commonsMode() const { return fCommonsMode; }
bool warnCommons() const { return fWarnCommons; }
bool keepRelocations();
- FileInfo findFile(const std::string &path) const;
+ FileInfo findFile(const std::string &path, const ld::dylib::File* fromDylib=nullptr) const;
bool findFile(const std::string &path, const std::vector<std::string> &tbdExtensions, FileInfo& result) const;
UUIDMode UUIDMode() const { return fUUIDMode; }
bool warnStabs();
const std::vector<DylibOverride>& dylibOverrides() const { return fDylibOverrides; }
const char* generatedMapPath() const { return fMapPath; }
bool positionIndependentExecutable() const { return fPositionIndependentExecutable; }
- Options::FileInfo findFileUsingPaths(const std::string &path) const;
+ Options::FileInfo findIndirectDylib(const std::string& installName, const ld::dylib::File* fromDylib) const;
bool deadStripDylibs() const { return fDeadStripDylibs; }
bool allowedUndefined(const char* name) const { return ( fAllowedUndefined.find(name) != fAllowedUndefined.end() ); }
bool someAllowedUndefines() const { return (fAllowedUndefined.size() != 0); }
bool addFunctionStarts() const { return fFunctionStartsLoadCommand; }
bool addDataInCodeInfo() const { return fDataInCodeInfoLoadCommand; }
bool canReExportSymbols() const { return fCanReExportSymbols; }
+ const char* ltoCachePath() const { return fLtoCachePath; }
+ int ltoPruneInterval() const { return fLtoPruneInterval; }
+ int ltoPruneAfter() const { return fLtoPruneAfter; }
+ unsigned ltoMaxCacheSize() const { return fLtoMaxCacheSize; }
const char* tempLtoObjectPath() const { return fTempLtoObjectPath; }
const char* overridePathlibLTO() const { return fOverridePathlibLTO; }
const char* mcpuLTO() const { return fLtoCpu; }
bool ltoCodegenOnly() const { return fLTOCodegenOnly; }
bool ignoreAutoLink() const { return fIgnoreAutoLink; }
bool allowDeadDuplicates() const { return fAllowDeadDups; }
+ bool allowWeakImports() const { return fAllowWeakImports; }
BitcodeMode bitcodeKind() const { return fBitcodeKind; }
bool sharedRegionEncodingV2() const { return fSharedRegionEncodingV2; }
bool useDataConstSegment() const { return fUseDataConstSegment; }
+ bool useTextExecSegment() const { return fUseTextExecSegment; }
bool hasWeakBitTweaks() const;
bool forceWeak(const char* symbolName) const;
bool forceNotWeak(const char* symbolName) const;
std::string getSDKVersionStr() const;
std::string getPlatformStr() const;
uint8_t maxDefaultCommonAlign() const { return fMaxDefaultCommonAlign; }
+ bool hasDataSymbolMoves() const { return !fSymbolsMovesData.empty(); }
+ bool hasCodeSymbolMoves() const { return !fSymbolsMovesCode.empty(); }
static uint32_t parseVersionNumber32(const char*);
enum ExportMode { kExportDefault, kExportSome, kDontExportSome };
enum LibrarySearchMode { kSearchDylibAndArchiveInEachDir, kSearchAllDirsForDylibsThenAllDirsForArchives };
enum InterposeMode { kInterposeNone, kInterposeAllExternal, kInterposeSome };
- enum FilePreference { kModTime, kTextBasedStub, kMachO };
class SetWithWildcards {
public:
const char* fSegAddrTablePath;
const char* fMapPath;
const char* fDyldInstallPath;
+ const char* fLtoCachePath;
+ int fLtoPruneInterval;
+ int fLtoPruneAfter;
+ unsigned fLtoMaxCacheSize;
const char* fTempLtoObjectPath;
const char* fOverridePathlibLTO;
const char* fLtoCpu;
bool fTraceDylibs;
bool fTraceIndirectDylibs;
bool fTraceArchives;
+ bool fTraceEmitJSON;
bool fOutputSlidable;
bool fWarnWeakExports;
bool fObjcGcCompaction;
bool fUseDataConstSegment;
bool fUseDataConstSegmentForceOn;
bool fUseDataConstSegmentForceOff;
+ bool fUseTextExecSegment;
bool fBundleBitcode;
bool fHideSymbols;
bool fVerifyBitcode;
bool fLTOCodegenOnly;
bool fIgnoreAutoLink;
bool fAllowDeadDups;
+ bool fAllowWeakImports;
BitcodeMode fBitcodeKind;
Platform fPlatform;
DebugInfoStripping fDebugInfoStripping;
std::vector<SegmentRename> fSegmentRenames;
std::vector<SymbolsMove> fSymbolsMovesData;
std::vector<SymbolsMove> fSymbolsMovesCode;
- std::vector<SymbolsMove> fSymbolsMovesZeroFill;
bool fSaveTempFiles;
mutable Snapshot fLinkSnapshot;
bool fSnapshotRequested;
const char* fDependencyInfoPath;
mutable int fDependencyFileDescriptor;
uint8_t fMaxDefaultCommonAlign;
- FilePreference fFilePreference;
- bool fForceTextBasedStub;
};
#include <algorithm>
#include <unordered_set>
#include <utility>
+#include <iostream>
+#include <fstream>
#include <CommonCrypto/CommonDigest.h>
#include <AvailabilityMacros.h>
//this->dumpAtomsBySection(state, false);
this->writeOutputFile(state);
this->writeMapFile(state);
+ this->writeJSONEntry(state);
}
bool OutputFile::findSegment(ld::Internal& state, uint64_t addr, uint64_t* start, uint64_t* end, uint32_t* index)
case Options::kPreload:
// mach-o MH_PRELOAD files need no padding between load commands and first section
paddingSize = 0;
+ case Options::kKextBundle:
+ if ( _options.useTextExecSegment() ) {
+ paddingSize = 32;
+ break;
+ }
+ // else fall into default case
default:
// work backwards from end of segment and lay out sections so that extra room goes to padding atom
uint64_t addr = 0;
throw "unexpected binding";
}
+uint64_t OutputFile::addressAndTarget(const ld::Internal& state, const ld::Fixup* fixup, const ld::Atom** target)
+{
+ switch ( fixup->binding ) {
+ case ld::Fixup::bindingNone:
+ throw "unexpected bindingNone";
+ case ld::Fixup::bindingByNameUnbound:
+ throw "unexpected bindingByNameUnbound";
+ case ld::Fixup::bindingByContentBound:
+ case ld::Fixup::bindingDirectlyBound:
+ *target = fixup->u.target;
+ return (*target)->finalAddress();
+ case ld::Fixup::bindingsIndirectlyBound:
+ *target = state.indirectBindingTable[fixup->u.bindingIndex];
+ #ifndef NDEBUG
+ if ( ! (*target)->finalAddressMode() ) {
+ throwf("reference to symbol (which has not been assigned an address) %s", (*target)->name());
+ }
+ #endif
+ return (*target)->finalAddress();
+ }
+ throw "unexpected binding";
+}
+
+
uint64_t OutputFile::sectionOffsetOf(const ld::Internal& state, const ld::Fixup* fixup)
{
const ld::Atom* target = NULL;
{
// GOT entry was optimized away, change LDR instruction to a ADD
instruction = get32LE(fixUpLocation);
- if ( (instruction & 0xFFC00000) != 0xF9400000 )
+ if ( (instruction & 0xBFC00000) != 0xB9400000 )
throwf("GOT load reloc does not point to a LDR instruction in %s", atom->name());
uint32_t offset = accumulator & 0x00000FFF;
uint32_t imm12 = offset << 10;
{
// TLV thunk in same linkage unit, so LEA it directly, changing LDR instruction to a ADD
instruction = get32LE(fixUpLocation);
- if ( (instruction & 0xFFC00000) != 0xF9400000 )
+ if ( (instruction & 0xBFC00000) != 0xB9400000 )
throwf("TLV load reloc does not point to a LDR instruction in %s", atom->name());
uint32_t offset = accumulator & 0x00000FFF;
uint32_t imm12 = offset << 10;
case ld::Fixup::kindStoreARM64PointerToGOT:
set64LE(fixUpLocation, accumulator);
break;
- case ld::Fixup::kindStoreARM64PCRelToGOT:
+ case ld::Fixup::kindStoreARM64PCRelToGOT:
if ( fit->contentAddendOnly )
delta = accumulator;
else
uint64_t lastStabNlistFileOffset = symbolTableFileOffset + stabsOffsetEnd;
uint64_t firstStabStringFileOffset = stringPoolFileOffset + stabsStringsOffsetStart;
uint64_t lastStabStringFileOffset = stringPoolFileOffset + tabsStringsOffsetEnd;
- if ( log ) fprintf(stderr, "firstStabNlistFileOffset=0x%08llX\n", firstStabNlistFileOffset);
- if ( log ) fprintf(stderr, "lastStabNlistFileOffset=0x%08llX\n", lastStabNlistFileOffset);
- if ( log ) fprintf(stderr, "firstStabStringFileOffset=0x%08llX\n", firstStabStringFileOffset);
- if ( log ) fprintf(stderr, "lastStabStringFileOffset=0x%08llX\n", lastStabStringFileOffset);
+ if ( log ) fprintf(stderr, "stabNlist offset=0x%08llX, size=0x%08llX\n", firstStabNlistFileOffset, lastStabNlistFileOffset-firstStabNlistFileOffset);
+ if ( log ) fprintf(stderr, "stabString offset=0x%08llX, size=0x%08llX\n", firstStabStringFileOffset, lastStabStringFileOffset-firstStabStringFileOffset);
assert(firstStabNlistFileOffset <= firstStabStringFileOffset);
excludeRegions.emplace_back(std::pair<uint64_t, uint64_t>(firstStabNlistFileOffset, lastStabNlistFileOffset));
excludeRegions.emplace_back(std::pair<uint64_t, uint64_t>(firstStabStringFileOffset, lastStabStringFileOffset));
+ // exclude LINKEDIT LC_SEGMENT (size field depends on stabs size)
+ uint64_t linkeditSegCmdOffset;
+ uint64_t linkeditSegCmdSize;
+ _headersAndLoadCommandAtom->linkeditCmdInfo(linkeditSegCmdOffset, linkeditSegCmdSize);
+ excludeRegions.emplace_back(std::pair<uint64_t, uint64_t>(linkeditSegCmdOffset, linkeditSegCmdOffset+linkeditSegCmdSize));
+ if ( log ) fprintf(stderr, "linkedit SegCmdOffset=0x%08llX, size=0x%08llX\n", linkeditSegCmdOffset, linkeditSegCmdSize);
+ uint64_t symbolTableCmdOffset;
+ uint64_t symbolTableCmdSize;
+ _headersAndLoadCommandAtom->symbolTableCmdInfo(symbolTableCmdOffset, symbolTableCmdSize);
+ excludeRegions.emplace_back(std::pair<uint64_t, uint64_t>(symbolTableCmdOffset, symbolTableCmdOffset+symbolTableCmdSize));
+ if ( log ) fprintf(stderr, "linkedit SegCmdOffset=0x%08llX, size=0x%08llX\n", symbolTableCmdOffset, symbolTableCmdSize);
}
if ( !excludeRegions.empty() ) {
CC_MD5_CTX md5state;
if ( lastSlash != NULL ) {
CC_MD5_Update(&md5state, lastSlash, strlen(lastSlash));
}
+ std::sort(excludeRegions.begin(), excludeRegions.end());
uint64_t checksumStart = 0;
for ( auto& region : excludeRegions ) {
uint64_t regionStart = region.first;
}
struct AtomByNameSorter
-{
- bool operator()(const ld::Atom* left, const ld::Atom* right)
- {
- return (strcmp(left->name(), right->name()) < 0);
- }
+{
+ bool operator()(const ld::Atom* left, const ld::Atom* right) const
+ {
+ return (strcmp(left->name(), right->name()) < 0);
+ }
+
+ bool operator()(const ld::Atom* left, const char* right) const
+ {
+ return (strcmp(left->name(), right) < 0);
+ }
+
+ bool operator()(const char* left, const ld::Atom* right) const
+ {
+ return (strcmp(left, right->name()) < 0);
+ }
};
+
class NotInSet
{
public:
// in -r mode, clarify symbolTableNotInFinalLinkedImages
if ( _options.outputKind() == Options::kObjectFile ) {
- if ( (_options.architecture() == CPU_TYPE_X86_64) || (_options.architecture() == CPU_TYPE_ARM64) ) {
+ if ( (_options.architecture() == CPU_TYPE_X86_64)
+ || (_options.architecture() == CPU_TYPE_ARM64)
+ ) {
// x86_64 .o files need labels on anonymous literal strings
if ( (sect->type() == ld::Section::typeCString) && (atom->combine() == ld::Atom::combineByNameAndContent) ) {
(const_cast<ld::Atom*>(atom))->setSymbolTableInclusion(ld::Atom::symbolTableIn);
// sort by name
std::sort(_exportedAtoms.begin(), _exportedAtoms.end(), AtomByNameSorter());
std::sort(_importedAtoms.begin(), _importedAtoms.end(), AtomByNameSorter());
+
+ std::map<std::string, std::vector<std::string>> addedSymbols;
+ std::map<std::string, std::vector<std::string>> hiddenSymbols;
+ for (const auto *atom : _exportedAtoms) {
+ // The exported symbols have already been sorted. Early exit the loop
+ // once we see a symbol that is lexicographically past the special
+ // linker symbol.
+ if (atom->name()[0] > '$')
+ break;
+
+ std::string name(atom->name());
+ if (name.rfind("$ld$add$", 7) == 0) {
+ auto pos = name.find_first_of('$', 10);
+ if (pos == std::string::npos) {
+ warning("bad special linker symbol '%s'", atom->name());
+ continue;
+ }
+ auto &&symbolName = name.substr(pos+1);
+ auto it = addedSymbols.emplace(symbolName, std::initializer_list<std::string>{name});
+ if (!it.second)
+ it.first->second.emplace_back(name);
+ } else if (name.rfind("$ld$hide$", 8) == 0) {
+ auto pos = name.find_first_of('$', 11);
+ if (pos == std::string::npos) {
+ warning("bad special linker symbol '%s'", atom->name());
+ continue;
+ }
+ auto &&symbolName = name.substr(pos+1);
+ auto it = hiddenSymbols.emplace(symbolName, std::initializer_list<std::string>{name});
+ if (!it.second)
+ it.first->second.emplace_back(name);
+ }
+ }
+
+ for (const auto &it : addedSymbols) {
+ if (!std::binary_search(_exportedAtoms.begin(), _exportedAtoms.end(), it.first.c_str(), AtomByNameSorter()))
+ continue;
+ for (const auto &symbol : it.second)
+ warning("linker symbol '%s' adds already existing symbol '%s'", symbol.c_str(), it.first.c_str());
+ }
+
+ auto it = hiddenSymbols.begin();
+ while (it != hiddenSymbols.end()) {
+ if (std::binary_search(_exportedAtoms.begin(), _exportedAtoms.end(), it->first.c_str(), AtomByNameSorter()))
+ it = hiddenSymbols.erase(it);
+ else
+ ++it;
+ }
+
+ for (const auto &it : hiddenSymbols) {
+ for (const auto &symbol : it.second)
+ warning("linker symbol '%s' hides a non-existent symbol '%s'", symbol.c_str(), it.first.c_str());
+ }
}
void OutputFile::addPreloadLinkEdit(ld::Internal& state)
localRelocationsSection = state.addAtom(*_localRelocsAtom);
}
if ( _hasSplitSegInfo ) {
- _splitSegInfoAtom = new SplitSegInfoV1Atom<x86>(_options, state, *this);
+ if ( _options.sharedRegionEncodingV2() )
+ _splitSegInfoAtom = new SplitSegInfoV2Atom<x86>(_options, state, *this);
+ else
+ _splitSegInfoAtom = new SplitSegInfoV1Atom<x86>(_options, state, *this);
splitSegInfoSection = state.addAtom(*_splitSegInfoAtom);
}
if ( _hasFunctionStartsInfo ) {
localRelocationsSection = state.addAtom(*_localRelocsAtom);
}
if ( _hasSplitSegInfo ) {
- _splitSegInfoAtom = new SplitSegInfoV1Atom<x86_64>(_options, state, *this);
+ if ( _options.sharedRegionEncodingV2() )
+ _splitSegInfoAtom = new SplitSegInfoV2Atom<x86_64>(_options, state, *this);
+ else
+ _splitSegInfoAtom = new SplitSegInfoV1Atom<x86_64>(_options, state, *this);
splitSegInfoSection = state.addAtom(*_splitSegInfoAtom);
}
if ( _hasFunctionStartsInfo ) {
for (std::vector<ld::Internal::FinalSection*>::iterator sit = state.sections.begin(); sit != state.sections.end(); ++sit) {
ld::Internal::FinalSection* sect = *sit;
// record end of last __TEXT section encrypted iPhoneOS apps.
- if ( _options.makeEncryptable() && (strcmp(sect->segmentName(), "__TEXT") == 0) ) {
+ if ( _options.makeEncryptable() && (strcmp(sect->segmentName(), "__TEXT") == 0) && (strcmp(sect->sectionName(), "__oslogstring") != 0) ) {
_encryptedTEXTendOffset = pageAlign(sect->fileOffset + sect->size);
}
bool objc1ClassRefSection = ( (sect->type() == ld::Section::typeCStringPointer)
else if ( _options.positionIndependentExecutable() && (_options.outputKind() == Options::kDynamicExecutable)
&& ((_options.iOSVersionMin() >= ld::iOS_4_3) || (_options.macosxVersionMin() >= ld::mac10_7)) ) {
if ( ! this->pieDisabled ) {
+ switch ( _options.architecture()) {
+#if SUPPORT_ARCH_arm64
+ case CPU_TYPE_ARM64:
+#endif
#if SUPPORT_ARCH_arm64
- if ( _options.architecture() == CPU_TYPE_ARM64 ) {
+ {
const char* demangledName = strdup(_options.demangleSymbol(atom->name()));
throwf("Absolute addressing not allowed in arm64 code but used in '%s' referencing '%s'", demangledName, _options.demangleSymbol(target->name()));
}
- else
#endif
- {
+ default:
warning("PIE disabled. Absolute addressing (perhaps -mdynamic-no-pic) not allowed in code signed PIE, "
"but used in %s from %s. "
"To fix this warning, don't compile with -mdynamic-no-pic or link with -Wl,-no_pie",
}
// Have direct reference to weak-global. This should be an indrect reference
const char* demangledName = strdup(_options.demangleSymbol(atom->name()));
- warning("direct access in %s to global weak symbol %s means the weak symbol cannot be overridden at runtime. "
+ warning("direct access in function '%s' from file '%s' to global weak symbol '%s' from file '%s' means the weak symbol cannot be overridden at runtime. "
"This was likely caused by different translation units being compiled with different visibility settings.",
- demangledName, _options.demangleSymbol(target->name()));
+ demangledName, atom->file()->path(), _options.demangleSymbol(target->name()), target->file()->path());
}
return;
}
}
// Have direct reference to weak-global. This should be an indrect reference
const char* demangledName = strdup(_options.demangleSymbol(atom->name()));
- warning("direct access in %s to global weak symbol %s means the weak symbol cannot be overridden at runtime. "
+ warning("direct access in function '%s' from file '%s' to global weak symbol '%s' from file '%s' means the weak symbol cannot be overridden at runtime. "
"This was likely caused by different translation units being compiled with different visibility settings.",
- demangledName, _options.demangleSymbol(target->name()));
+ demangledName, atom->file()->path(), _options.demangleSymbol(target->name()), target->file()->path());
}
return;
}
if ( _options.sharedRegionEligible() ) {
// <rdar://problem/13287063> when range checking, ignore high byte of arm64 addends
uint64_t checkAddend = addend;
- if ( _options.architecture() == CPU_TYPE_ARM64 )
+ if ( (_options.architecture() == CPU_TYPE_ARM64)
+ )
checkAddend &= 0x0FFFFFFFFFFFFFFFULL;
if ( checkAddend != 0 ) {
// make sure the addend does not cause the pointer to point outside the target's segment
bool OutputFile::useExternalSectionReloc(const ld::Atom* atom, const ld::Atom* target, ld::Fixup* fixupWithTarget)
{
- if ( (_options.architecture() == CPU_TYPE_X86_64) || (_options.architecture() == CPU_TYPE_ARM64) ) {
+ if ( (_options.architecture() == CPU_TYPE_X86_64)
+ || (_options.architecture() == CPU_TYPE_ARM64)
+ ) {
// x86_64 and ARM64 use external relocations for everthing that has a symbol
return ( target->symbolTableInclusion() != ld::Atom::symbolTableNotIn );
}
bool minusTargetUsesExternalReloc = (minusTarget != NULL) && this->useExternalSectionReloc(atom, minusTarget, fixupWithMinusTarget);
// in x86_64 and arm64 .o files an external reloc means the content contains just the addend
- if ( (_options.architecture() == CPU_TYPE_X86_64) ||(_options.architecture() == CPU_TYPE_ARM64) ) {
+ if ( (_options.architecture() == CPU_TYPE_X86_64)
+ || (_options.architecture() == CPU_TYPE_ARM64)
+ ) {
if ( targetUsesExternalReloc ) {
fixupWithTarget->contentAddendOnly = true;
fixupWithStore->contentAddendOnly = true;
if ( fit->firstInCluster() )
target = NULL;
if ( this->setsTarget(fit->kind) ) {
- accumulator = addressOf(state, fit, &target);
+ accumulator = addressOf(state, fit, &target);
thumbTarget = targetIsThumb(state, fit);
if ( thumbTarget )
accumulator |= 1;
}
break;
case ld::Fixup::kindSetTargetImageOffset:
- accumulator = addressOf(state, fit, &target);
+ accumulator = addressOf(state, fit, &target);
assert(target != NULL);
hadSubtract = true;
break;
for (ld::Fixup::iterator fit = atom->fixupsBegin(), end=atom->fixupsEnd(); fit != end; ++fit) {
if ( fit->firstInCluster() ) {
target = NULL;
+ hadSubtract = false;
fromTarget = NULL;
kind = 0;
addend = 0;
fromOffset = atom->finalAddress() + fit->offsetInAtom - sect->address;
}
if ( this->setsTarget(fit->kind) ) {
- accumulator = addressOf(state, fit, &target);
+ accumulator = addressAndTarget(state, fit, &target);
thumbTarget = targetIsThumb(state, fit);
if ( thumbTarget )
accumulator |= 1;
}
switch ( fit->kind ) {
case ld::Fixup::kindSubtractTargetAddress:
- accumulator -= addressOf(state, fit, &fromTarget);
+ accumulator -= addressAndTarget(state, fit, &fromTarget);
hadSubtract = true;
break;
case ld::Fixup::kindAddAddend:
break;
case ld::Fixup::kindSetTargetImageOffset:
kind = DYLD_CACHE_ADJ_V2_IMAGE_OFF_32;
- accumulator = addressOf(state, fit, &target);
+ accumulator = addressAndTarget(state, fit, &target);
assert(target != NULL);
toSectionIndex = target->machoSection();
toOffset = accumulator - state.atomToSection[target]->address;
continue;
for (std::vector<const ld::Atom*>::iterator ait = sect->atoms.begin(); ait != sect->atoms.end(); ++ait) {
const ld::Atom* atom = *ait;
- const ld::File* reader = atom->file();
+ const ld::File* reader = atom->originalFile();
if ( reader == NULL )
continue;
ld::File::Ordinal readerOrdinal = reader->ordinal();
}
}
}
+ for (const ld::Atom* atom : state.deadAtoms) {
+ const ld::File* reader = atom->originalFile();
+ if ( reader == NULL )
+ continue;
+ ld::File::Ordinal readerOrdinal = reader->ordinal();
+ std::map<const ld::File*, ld::File::Ordinal>::iterator pos = readerToOrdinal.find(reader);
+ if ( pos == readerToOrdinal.end() ) {
+ readerToOrdinal[reader] = readerOrdinal;
+ ordinalToReader[readerOrdinal] = reader;
+ }
+ }
fprintf(mapFile, "# Object files:\n");
fprintf(mapFile, "[%3u] %s\n", 0, "linker synthesized");
uint32_t fileIndex = 1;
continue;
if ( atom->contentType() == ld::Atom::typeCString ) {
strcpy(buffer, "literal string: ");
- strlcat(buffer, (char*)atom->rawContentPointer(), 4096);
+ const char* s = (char*)atom->rawContentPointer();
+ char* e = &buffer[4094];
+ for (char* b = &buffer[strlen(buffer)]; b < e;) {
+ char c = *s++;
+ if ( c == '\n' ) {
+ *b++ = '\\';
+ *b++ = 'n';
+ }
+ else {
+ *b++ = c;
+ }
+ if ( c == '\0' )
+ break;
+ }
+ buffer[4095] = '\0';
name = buffer;
}
else if ( (atom->contentType() == ld::Atom::typeCFI) && (strcmp(name, "FDE") == 0) ) {
name = buffer;
}
fprintf(mapFile, "0x%08llX\t0x%08llX\t[%3u] %s\n", atom->finalAddress(), atom->size(),
- readerToFileOrdinal[atom->file()], name);
+ readerToFileOrdinal[atom->originalFile()], name);
+ }
+ }
+ // preload check is hack until 26613948 is fixed
+ if ( _options.deadCodeStrip() && (_options.outputKind() != Options::kPreload) ) {
+ fprintf(mapFile, "\n");
+ fprintf(mapFile, "# Dead Stripped Symbols:\n");
+ fprintf(mapFile, "# \tSize \tFile Name\n");
+ for (const ld::Atom* atom : state.deadAtoms) {
+ char buffer[4096];
+ const char* name = atom->name();
+ // don't add auto-stripped aliases to .map file
+ if ( (atom->size() == 0) && (atom->symbolTableInclusion() == ld::Atom::symbolTableNotInFinalLinkedImages) )
+ continue;
+ if ( atom->contentType() == ld::Atom::typeCString ) {
+ strcpy(buffer, "literal string: ");
+ const char* s = (char*)atom->rawContentPointer();
+ char* e = &buffer[4094];
+ for (char* b = &buffer[strlen(buffer)]; b < e;) {
+ char c = *s++;
+ if ( c == '\n' ) {
+ *b++ = '\\';
+ *b++ = 'n';
+ }
+ else {
+ *b++ = c;
+ }
+ if ( c == '\0' )
+ break;
+ }
+ buffer[4095] = '\0';
+ name = buffer;
+ }
+ fprintf(mapFile, "<<dead>> \t0x%08llX\t[%3u] %s\n", atom->size(),
+ readerToFileOrdinal[atom->originalFile()], name);
}
}
fclose(mapFile);
}
}
+void OutputFile::writeJSONEntry(ld::Internal& state)
+{
+ if ( _options.traceEmitJSON() && (_options.UUIDMode() != Options::kUUIDNone) && (_options.traceOutputFile() != NULL) ) {
+
+ // Convert the UUID to a string.
+ const uint8_t* uuid = _headersAndLoadCommandAtom->getUUID();
+ uuid_string_t uuidString;
+
+ uuid_unparse(uuid, uuidString);
+
+ // Enumerate the dylibs.
+ std::vector<const ld::dylib::File*> dynamicList;
+ std::vector<const ld::dylib::File*> upwardList;
+ std::vector<const ld::dylib::File*> reexportList;
+
+ for (const ld::dylib::File* dylib : _dylibsToLoad) {
+
+ if (dylib->willBeUpwardDylib()) {
+
+ upwardList.push_back(dylib);
+ } else if (dylib->willBeReExported()) {
+
+ reexportList.push_back(dylib);
+ } else {
+
+ dynamicList.push_back(dylib);
+ }
+ }
+
+ /*
+ * Build the JSON entry.
+ */
+
+ std::string jsonEntry = "{";
+
+ jsonEntry += "\"uuid\":\"" + std::string(uuidString) + "\",";
+
+ // installPath() returns -final_output for non-dylibs
+ const char* lastNameSlash = strrchr(_options.installPath(), '/');
+ const char* leafName = (lastNameSlash != NULL) ? lastNameSlash+1 : _options.outputFilePath();
+ jsonEntry += "\"name\":\"" + std::string(leafName) + "\",";
+
+ jsonEntry += "\"arch\":\"" + std::string(_options.architectureName()) + "\"";
+
+ if (dynamicList.size() > 0) {
+ jsonEntry += ",\"dynamic\":[";
+ for (const ld::dylib::File* dylib : dynamicList) {
+ jsonEntry += "\"" + std::string(dylib->path()) + "\"";
+ if ((dylib != dynamicList.back())) {
+ jsonEntry += ",";
+ }
+ }
+ jsonEntry += "]";
+ }
+
+ if (upwardList.size() > 0) {
+ jsonEntry += ",\"upward-dynamic\":[";
+ for (const ld::dylib::File* dylib : upwardList) {
+ jsonEntry += "\"" + std::string(dylib->path()) + "\"";
+ if ((dylib != upwardList.back())) {
+ jsonEntry += ",";
+ }
+ }
+ jsonEntry += "]";
+ }
+
+ if (reexportList.size() > 0) {
+ jsonEntry += ",\"re-exports\":[";
+ for (const ld::dylib::File* dylib : reexportList) {
+ jsonEntry += "\"" + std::string(dylib->path()) + "\"";
+ if ((dylib != reexportList.back())) {
+ jsonEntry += ",";
+ }
+ }
+ jsonEntry += "]";
+ }
+
+ if (state.archivePaths.size() > 0) {
+ jsonEntry += ",\"archives\":[";
+ for (const std::string& archivePath : state.archivePaths) {
+ jsonEntry += "\"" + std::string(archivePath) + "\"";
+ if ((archivePath != state.archivePaths.back())) {
+ jsonEntry += ",";
+ }
+ }
+ jsonEntry += "]";
+ }
+ jsonEntry += "}\n";
+
+ // Write the JSON entry to the trace file.
+ std::ofstream out(_options.traceOutputFile(), ios::app);
+ out << jsonEntry;
+ }
+}
+
// used to sort atoms with debug notes
class DebugNoteSorter
{
void updateLINKEDITAddresses(ld::Internal& state);
void applyFixUps(ld::Internal& state, uint64_t mhAddress, const ld::Atom* atom, uint8_t* buffer);
uint64_t addressOf(const ld::Internal& state, const ld::Fixup* fixup, const ld::Atom** target);
+ uint64_t addressAndTarget(const ld::Internal& state, const ld::Fixup* fixup, const ld::Atom** target);
bool targetIsThumb(ld::Internal& state, const ld::Fixup* fixup);
uint32_t lazyBindingInfoOffsetForLazyPointerAddress(uint64_t lpAddress);
void copyNoOps(uint8_t* from, uint8_t* to, bool thumb);
void makeSplitSegInfo(ld::Internal& state);
void makeSplitSegInfoV2(ld::Internal& state);
void writeMapFile(ld::Internal& state);
+ void writeJSONEntry(ld::Internal& state);
uint64_t lookBackAddend(ld::Fixup::iterator fit);
bool takesNoDiskSpace(const ld::Section* sect);
bool hasZeroForFileOffset(const ld::Section* sect);
{
if ( linkerOption.size() == 1 ) {
const char* lo1 = linkerOption.front();
- if ( strncmp(lo1, "-l", 2) == 0 ) {
- _internal.linkerOptionLibraries.insert(&lo1[2]);
+ if ( strncmp(lo1, "-l", 2) == 0) {
+ if (_internal.linkerOptionLibraries.count(&lo1[2]) == 0) {
+ _internal.unprocessedLinkerOptionLibraries.insert(&lo1[2]);
+ }
}
else {
warning("unknown linker option from object file ignored: '%s' in %s", lo1, fileName);
else if ( linkerOption.size() == 2 ) {
const char* lo2a = linkerOption[0];
const char* lo2b = linkerOption[1];
- if ( strcmp(lo2a, "-framework") == 0 ) {
- _internal.linkerOptionFrameworks.insert(lo2b);
+ if ( strcmp(lo2a, "-framework") == 0) {
+ if (_internal.linkerOptionFrameworks.count(lo2b) == 0) {
+ _internal.unprocessedLinkerOptionFrameworks.insert(lo2b);
+ }
}
else {
warning("unknown linker option from object file ignored: '%s' '%s' from %s", lo2a, lo2b, fileName);
case 3:
strcpy(versionString, "2.0");
break;
+ case 4:
+ strcpy(versionString, "3.0");
+ break;
default:
sprintf(versionString, "unknown ABI version 0x%02X", value);
}
}
break;
}
+
+ // <rdar://problem/25680358> verify dylibs use same version of Swift language
+ if ( file.swiftVersion() != 0 ) {
+ if ( _internal.swiftVersion == 0 ) {
+ _internal.swiftVersion = file.swiftVersion();
+ }
+ else if ( file.swiftVersion() != _internal.swiftVersion ) {
+ char fileVersion[64];
+ char otherVersion[64];
+ userReadableSwiftVersion(file.swiftVersion(), fileVersion);
+ userReadableSwiftVersion(_internal.swiftVersion, otherVersion);
+ if ( file.swiftVersion() > _internal.swiftVersion ) {
+ throwf("%s compiled with newer version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ }
+ else {
+ throwf("%s compiled with older version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ }
+ }
+ }
+
if ( _options.checkDylibsAreAppExtensionSafe() && !dylibFile->appExtensionSafe() ) {
warning("linking against a dylib which is not safe for use in application extensions: %s", file.path());
}
const std::vector<Options::AliasPair>& aliases = _options.cmdLineAliases();
for (std::vector<Options::AliasPair>::const_iterator it=aliases.begin(); it != aliases.end(); ++it) {
if ( strcmp(it->realName, atom.name()) == 0 ) {
- const AliasAtom* alias = new AliasAtom(atom, it->alias);
- _aliasesFromCmdLine.push_back(alias);
- this->doAtom(*alias);
+ if ( strcmp(it->realName, it->alias) == 0 ) {
+ warning("ignoring alias of itself '%s'", it->realName);
+ }
+ else {
+ const AliasAtom* alias = new AliasAtom(atom, it->alias);
+ _aliasesFromCmdLine.push_back(alias);
+ this->doAtom(*alias);
+ }
}
}
}
}
if ( _haveLLVMObjs && !force ) {
+ std::copy_if(_atoms.begin(), _atoms.end(), std::back_inserter(_internal.deadAtoms), NotLiveLTO() );
// <rdar://problem/9777977> don't remove combinable atoms, they may come back in lto output
_atoms.erase(std::remove_if(_atoms.begin(), _atoms.end(), NotLiveLTO()), _atoms.end());
_symbolTable.removeDeadAtoms();
}
else {
+ std::copy_if(_atoms.begin(), _atoms.end(), std::back_inserter(_internal.deadAtoms), NotLive() );
_atoms.erase(std::remove_if(_atoms.begin(), _atoms.end(), NotLive()), _atoms.end());
}
lto::OptimizeOptions optOpt;
optOpt.outputFilePath = _options.outputFilePath();
optOpt.tmpObjectFilePath = _options.tempLtoObjectPath();
+ optOpt.ltoCachePath = _options.ltoCachePath();
+ optOpt.ltoPruneInterval = _options.ltoPruneInterval();
+ optOpt.ltoPruneAfter = _options.ltoPruneAfter();
+ optOpt.ltoMaxCacheSize = _options.ltoMaxCacheSize();
optOpt.preserveAllGlobals = _options.allGlobalsAreDeadStripRoots() || _options.hasExportRestrictList();
optOpt.verbose = _options.verbose();
optOpt.saveTemps = _options.saveTempFiles();
optOpt.arch = _options.architecture();
optOpt.mcpu = _options.mcpuLTO();
optOpt.platform = _options.platform();
+ optOpt.minOSVersion = _options.minOSversion();
optOpt.llvmOptions = &_options.llvmOptions();
optOpt.initialUndefines = &_options.initialUndefines();
}
}
+void Resolver::buildArchivesList()
+{
+ // Determine which archives were linked and update the internal state.
+ _inputFiles.archives(_internal);
+}
+
void Resolver::dumpAtoms()
{
fprintf(stderr, "Resolver all atoms:\n");
this->fillInInternalState();
this->tweakWeakness();
_symbolTable.checkDuplicateSymbols();
+ this->buildArchivesList();
}
void resolve();
-
+
private:
struct WhyLiveBackChain
{
void remainingUndefines(std::vector<const char*>&);
bool printReferencedBy(const char* name, SymbolTable::IndirectBindingSlot slot);
void tweakWeakness();
+ void buildArchivesList();
void doLinkerOption(const std::vector<const char*>& linkerOption, const char* fileName);
void dumpAtoms();
virtual ~InternalState() {}
private:
+ bool inMoveRWChain(const ld::Atom& atom, const char* filePath, const char*& dstSeg, bool& wildCardMatch);
+ bool inMoveROChain(const ld::Atom& atom, const char* filePath, const char*& dstSeg, bool& wildCardMatch);
class FinalSection : public ld::Internal::FinalSection
{
SectionInToOut _sectionInToFinalMap;
const Options& _options;
bool _atomsOrderedInSections;
+ std::unordered_map<const ld::Atom*, const char*> _pendingSegMove;
};
ld::Section InternalState::FinalSection::_s_DATA_data( "__DATA", "__data", ld::Section::typeUnclassified);
_segmentOrder(segmentOrder(sect, opts)),
_sectionOrder(sectionOrder(sect, sectionsSeen, opts))
{
- //fprintf(stderr, "FinalSection(%s, %s) _segmentOrder=%d, _sectionOrder=%d\n",
+ //fprintf(stderr, "FinalSection(%16s, %16s) _segmentOrder=%3d, _sectionOrder=0x%08X\n",
// this->segmentName(), this->sectionName(), _segmentOrder, _sectionOrder);
}
if ( strcmp(sect.segmentName(), "__DATA") == 0 )
return order.size()+2;
}
+ else if ( options.outputKind() == Options::kStaticExecutable ) {
+ const std::vector<const char*>& order = options.segmentOrder();
+ for (size_t i=0; i != order.size(); ++i) {
+ if ( strcmp(sect.segmentName(), order[i]) == 0 )
+ return i+1;
+ }
+ if ( strcmp(sect.segmentName(), "__PAGEZERO") == 0 )
+ return 0;
+ if ( strcmp(sect.segmentName(), "__TEXT") == 0 )
+ return order.size()+1;
+ if ( strcmp(sect.segmentName(), "__DATA") == 0 )
+ return order.size()+2;
+ }
else {
if ( strcmp(sect.segmentName(), "__PAGEZERO") == 0 )
return 0;
if ( strcmp(sect.segmentName(), "__TEXT") == 0 )
return 1;
+ if ( strcmp(sect.segmentName(), "__TEXT_EXEC") == 0 )
+ return 2;
// in -r mode, want __DATA last so zerofill sections are at end
if ( strcmp(sect.segmentName(), "__DATA") == 0 )
- return (options.outputKind() == Options::kObjectFile) ? 5 : 2;
+ return (options.outputKind() == Options::kObjectFile) ? 6 : 3;
if ( strcmp(sect.segmentName(), "__OBJC") == 0 )
- return 3;
- if ( strcmp(sect.segmentName(), "__IMPORT") == 0 )
return 4;
+ if ( strcmp(sect.segmentName(), "__IMPORT") == 0 )
+ return 5;
}
// layout non-standard segments in order seen (+100 to shift beyond standard segments)
for (uint32_t i=0; i < _s_segmentsSeen.size(); ++i) {
return 10;
else
return 11;
+ case ld::Section::typeNonStdCString:
+ if ( (strcmp(sect.sectionName(), "__oslogstring") == 0) && options.makeEncryptable() )
+ return INT_MAX-1;
+ else
+ return sectionsSeen+20;
case ld::Section::typeStub:
return 12;
case ld::Section::typeStubHelper:
return 13;
case ld::Section::typeLSDA:
- return INT_MAX-3;
+ return INT_MAX-4;
case ld::Section::typeUnwindInfo:
- return INT_MAX-2;
+ return INT_MAX-3;
case ld::Section::typeCFI:
- return INT_MAX-1;
+ return INT_MAX-2;
case ld::Section::typeStubClose:
return INT_MAX;
default:
case ld::Section::typeTerminatorPointers:
return 13;
case ld::Section::typeTLVInitialValues:
- return INT_MAX-4; // need TLV zero-fill to follow TLV init values
+ return INT_MAX-259; // need TLV zero-fill to follow TLV init values
case ld::Section::typeTLVZeroFill:
- return INT_MAX-3;
+ return INT_MAX-258;
case ld::Section::typeZeroFill:
// make sure __huge is always last zerofill section
if ( strcmp(sect.sectionName(), "__huge") == 0 )
return INT_MAX-1;
else
- return INT_MAX-2;
+ return INT_MAX-256+sectionsSeen; // <rdar://problem/25448494> zero fill need to be last and in "seen" order
default:
// <rdar://problem/14348664> __DATA,__const section should be near __mod_init_func not __data
if ( strcmp(sect.sectionName(), "__const") == 0 )
}
// make sure zerofill in any other section is at end of segment
if ( sect.type() == ld::Section::typeZeroFill )
- return INT_MAX-1;
+ return INT_MAX-256+sectionsSeen;
return sectionsSeen+20;
}
return false;
}
+bool InternalState::inMoveRWChain(const ld::Atom& atom, const char* filePath, const char*& dstSeg, bool& wildCardMatch)
+{
+ if ( !_options.hasDataSymbolMoves() )
+ return false;
+
+ auto pos = _pendingSegMove.find(&atom);
+ if ( pos != _pendingSegMove.end() ) {
+ dstSeg = pos->second;
+ return true;
+ }
+
+ bool result = false;
+ if ( _options.moveRwSymbol(atom.name(), filePath, dstSeg, wildCardMatch) )
+ result = true;
+
+ for (ld::Fixup::iterator fit=atom.fixupsBegin(); fit != atom.fixupsEnd(); ++fit) {
+ if ( fit->kind == ld::Fixup::kindNoneFollowOn ) {
+ if ( fit->binding == ld::Fixup::bindingDirectlyBound ) {
+ if ( inMoveRWChain(*(fit->u.target), filePath, dstSeg, wildCardMatch) )
+ result = true;
+ }
+ }
+ }
+
+ if ( result ) {
+ for (ld::Fixup::iterator fit=atom.fixupsBegin(); fit != atom.fixupsEnd(); ++fit) {
+ if ( fit->kind == ld::Fixup::kindNoneFollowOn ) {
+ if ( fit->binding == ld::Fixup::bindingDirectlyBound ) {
+ _pendingSegMove[fit->u.target] = dstSeg;
+ }
+ }
+ }
+ }
+
+ return result;
+}
+
+
+bool InternalState::inMoveROChain(const ld::Atom& atom, const char* filePath, const char*& dstSeg, bool& wildCardMatch)
+{
+ if ( !_options.hasCodeSymbolMoves() )
+ return false;
+
+ auto pos = _pendingSegMove.find(&atom);
+ if ( pos != _pendingSegMove.end() ) {
+ dstSeg = pos->second;
+ return true;
+ }
+
+ bool result = false;
+ if ( _options.moveRoSymbol(atom.name(), filePath, dstSeg, wildCardMatch) )
+ result = true;
+
+ for (ld::Fixup::iterator fit=atom.fixupsBegin(); fit != atom.fixupsEnd(); ++fit) {
+ if ( fit->kind == ld::Fixup::kindNoneFollowOn ) {
+ if ( fit->binding == ld::Fixup::bindingDirectlyBound ) {
+ if ( inMoveROChain(*(fit->u.target), filePath, dstSeg, wildCardMatch) )
+ result = true;
+ }
+ }
+ }
+
+ if ( result ) {
+ for (ld::Fixup::iterator fit=atom.fixupsBegin(); fit != atom.fixupsEnd(); ++fit) {
+ if ( fit->kind == ld::Fixup::kindNoneFollowOn ) {
+ if ( fit->binding == ld::Fixup::bindingDirectlyBound ) {
+ _pendingSegMove[fit->u.target] = dstSeg;
+ }
+ }
+ }
+ }
+
+ return result;
+}
+
+
+
+
ld::Internal::FinalSection* InternalState::addAtom(const ld::Atom& atom)
{
+ //fprintf(stderr, "addAtom: %s\n", atom.name());
ld::Internal::FinalSection* fs = NULL;
- const char* sectName = atom.section().sectionName();
+ const char* curSectName = atom.section().sectionName();
+ const char* curSegName = atom.section().segmentName();
ld::Section::Type sectType = atom.section().type();
const ld::File* f = atom.file();
const char* path = (f != NULL) ? f->path() : NULL;
// tentative defintions don't have a real section name yet
sectType = ld::Section::typeZeroFill;
if ( _options.mergeZeroFill() )
- sectName = FinalSection::_s_DATA_zerofill.sectionName();
+ curSectName = FinalSection::_s_DATA_zerofill.sectionName();
else
- sectName = FinalSection::_s_DATA_common.sectionName();
+ curSectName = FinalSection::_s_DATA_common.sectionName();
}
// Support for -move_to_r._segment
if ( atom.symbolTableInclusion() == ld::Atom::symbolTableIn ) {
const char* dstSeg;
- //fprintf(stderr, "%s\n", atom.name());
bool wildCardMatch;
- if ( _options.moveRwSymbol(atom.name(), path, dstSeg, wildCardMatch) ) {
+ if ( inMoveRWChain(atom, path, dstSeg, wildCardMatch) ) {
if ( (sectType != ld::Section::typeZeroFill)
&& (sectType != ld::Section::typeUnclassified)
&& (sectType != ld::Section::typeTentativeDefs)
warning("cannot move symbol '%s' from file %s to segment '%s' because symbol is not data (is %d)", atom.name(), path, dstSeg, sectType);
}
else {
+ curSegName = dstSeg;
if ( _options.traceSymbolLayout() )
- printf("symbol '%s', -move_to_rw_segment mapped it to %s/%s\n", atom.name(), dstSeg, sectName);
- fs = this->getFinalSection(dstSeg, sectName, sectType);
+ printf("symbol '%s', -move_to_rw_segment mapped it to %s/%s\n", atom.name(), curSegName, curSectName);
+ fs = this->getFinalSection(curSegName, curSectName, sectType);
}
}
- if ( (fs == NULL) && _options.moveRoSymbol(atom.name(), path, dstSeg, wildCardMatch) ) {
+ if ( (fs == NULL) && inMoveROChain(atom, path, dstSeg, wildCardMatch) ) {
if ( (sectType != ld::Section::typeCode)
&& (sectType != ld::Section::typeUnclassified) ) {
if ( !wildCardMatch )
warning("cannot move symbol '%s' from file %s to segment '%s' because symbol is not code (is %d)", atom.name(), path, dstSeg, sectType);
}
else {
+ curSegName = dstSeg;
if ( _options.traceSymbolLayout() )
- printf("symbol '%s', -move_to_ro_segment mapped it to %s/%s\n", atom.name(), dstSeg, sectName);
- fs = this->getFinalSection(dstSeg, sectName, ld::Section::typeCode);
+ printf("symbol '%s', -move_to_ro_segment mapped it to %s/%s\n", atom.name(), curSegName, curSectName);
+ fs = this->getFinalSection(curSegName, curSectName, ld::Section::typeCode);
}
}
}
// support for -rename_section and -rename_segment
- if ( fs == NULL ) {
- const std::vector<Options::SectionRename>& sectRenames = _options.sectionRenames();
- const std::vector<Options::SegmentRename>& segRenames = _options.segmentRenames();
- for ( std::vector<Options::SectionRename>::const_iterator it=sectRenames.begin(); it != sectRenames.end(); ++it) {
- if ( (strcmp(sectName, it->fromSection) == 0) && (strcmp(atom.section().segmentName(), it->fromSegment) == 0) ) {
- if ( _options.useDataConstSegment() && (strcmp(sectName, "__const") == 0)
- && (strcmp(atom.section().segmentName(), "__DATA") == 0) && hasReferenceToWeakExternal(atom) ) {
- // if __DATA,__const atom has pointer to weak external symbol, don't move to __DATA_CONST
- fs = this->getFinalSection("__DATA", "__const_weak", sectType);
- if ( _options.traceSymbolLayout() )
- printf("symbol '%s', contains pointers to weak symbols, so mapped it to __DATA/_const_weak\n", atom.name());
- }
- else if ( _options.useDataConstSegment() && (sectType == ld::Section::typeNonLazyPointer) && hasReferenceToWeakExternal(atom) ) {
- // if __DATA,__nl_symbol_ptr atom has pointer to weak external symbol, don't move to __DATA_CONST
- fs = this->getFinalSection("__DATA", "__got_weak", sectType);
- if ( _options.traceSymbolLayout() )
- printf("symbol '%s', contains pointers to weak symbols, so mapped it to __DATA/__got_weak\n", atom.name());
- }
- else {
- fs = this->getFinalSection(it->toSegment, it->toSection, sectType);
- if ( _options.traceSymbolLayout() )
- printf("symbol '%s', -rename_section mapped it to %s/%s\n", atom.name(), fs->segmentName(), fs->sectionName());
- }
+ for (const Options::SectionRename& rename : _options.sectionRenames()) {
+ if ( (strcmp(curSectName, rename.fromSection) == 0) && (strcmp(curSegName, rename.fromSegment) == 0) ) {
+ if ( _options.useDataConstSegment() && (strcmp(curSectName, "__const") == 0) && (strcmp(curSegName, "__DATA") == 0) && hasReferenceToWeakExternal(atom) ) {
+ // if __DATA,__const atom has pointer to weak external symbol, don't move to __DATA_CONST
+ curSectName = "__const_weak";
+ fs = this->getFinalSection(curSegName, curSectName, sectType);
+ if ( _options.traceSymbolLayout() )
+ printf("symbol '%s', contains pointers to weak symbols, so mapped it to __DATA/__const_weak\n", atom.name());
}
- }
- if ( fs == NULL ) {
- for ( std::vector<Options::SegmentRename>::const_iterator it=segRenames.begin(); it != segRenames.end(); ++it) {
- if ( strcmp(atom.section().segmentName(), it->fromSegment) == 0 ) {
- if ( _options.traceSymbolLayout() )
- printf("symbol '%s', -rename_segment mapped it to %s/%s\n", atom.name(), it->toSegment, sectName);
- fs = this->getFinalSection(it->toSegment, sectName, sectType);
- }
+ else if ( _options.useDataConstSegment() && (sectType == ld::Section::typeNonLazyPointer) && hasReferenceToWeakExternal(atom) ) {
+ // if __DATA,__nl_symbol_ptr atom has pointer to weak external symbol, don't move to __DATA_CONST
+ curSectName = "__got_weak";
+ fs = this->getFinalSection("__DATA", curSectName, sectType);
+ if ( _options.traceSymbolLayout() )
+ printf("symbol '%s', contains pointers to weak symbols, so mapped it to __DATA/__got_weak\n", atom.name());
+ }
+ else {
+ curSegName = rename.toSegment;
+ curSectName = rename.toSection;
+ fs = this->getFinalSection(rename.toSegment, rename.toSection, sectType);
+ if ( _options.traceSymbolLayout() )
+ printf("symbol '%s', -rename_section mapped it to %s/%s\n", atom.name(), fs->segmentName(), fs->sectionName());
}
}
}
+ for (const Options::SegmentRename& rename : _options.segmentRenames()) {
+ if ( strcmp(curSegName, rename.fromSegment) == 0 ) {
+ if ( _options.traceSymbolLayout() )
+ printf("symbol '%s', -rename_segment mapped it to %s/%s\n", atom.name(), rename.toSegment, curSectName);
+ fs = this->getFinalSection(rename.toSegment, curSectName, sectType);
+ }
+ }
// if no override, use default location
if ( fs == NULL ) {
printf("symbol '%s', use default mapping to %s/%s\n", atom.name(), fs->segmentName(), fs->sectionName());
}
- //fprintf(stderr, "InternalState::doAtom(%p), name=%s, sect=%s, finalsect=%p\n", &atom, atom.name(), atom.section().sectionName(), fs);
+ //fprintf(stderr, "InternalState::doAtom(%p), name=%s, sect=%s, finalseg=%s\n", &atom, atom.name(), atom.section().sectionName(), fs->segmentName());
#ifndef NDEBUG
validateFixups(atom);
#endif
this->hasThreadLocalVariableDefinitions = true;
}
}
+
+ // <rdar://problem/24221680> All __thread_data and __thread_bss sections must have same alignment
+ uint8_t maxThreadAlign = 0;
+ for (ld::Internal::FinalSection* sect : sections) {
+ if ( (sect->type() == ld::Section::typeTLVInitialValues) || (sect->type() == ld::Section::typeTLVZeroFill) ) {
+ if ( sect->alignment > maxThreadAlign )
+ maxThreadAlign = sect->alignment;
+ }
+ }
+ for (ld::Internal::FinalSection* sect : sections) {
+ if ( (sect->type() == ld::Section::typeTLVInitialValues) || (sect->type() == ld::Section::typeTLVZeroFill) ) {
+ sect->alignment = maxThreadAlign;
+ }
+ }
+
}
uint64_t InternalState::assignFileOffsets()
}
}
catch (const char* msg) {
- if ( archInferred )
+ if ( strstr(msg, "malformed") != NULL )
+ fprintf(stderr, "ld: %s\n", msg);
+ else if ( archInferred )
fprintf(stderr, "ld: %s for inferred architecture %s\n", msg, archName);
else if ( showArch )
fprintf(stderr, "ld: %s for architecture %s\n", msg, archName);
Ordinal (uint64_t ordinal) : _ordinal(ordinal) {}
- enum { kArgListPartition=0, kIndirectDylibPartition=1, kLTOPartition = 2, kLinkerOptionPartition = 2, InvalidParition=0xffff };
+ enum { kArgListPartition=0, kIndirectDylibPartition=1, kLTOPartition = 2, kLinkerOptionPartition = 3, InvalidParition=0xffff };
Ordinal(uint16_t partition, uint16_t majorIndex, uint16_t minorIndex, uint16_t counter) {
_ordinal = ((uint64_t)partition<<48) | ((uint64_t)majorIndex<<32) | ((uint64_t)minorIndex<<16) | ((uint64_t)counter<<0);
}
const uint16_t majorIndex() const { return (_ordinal>>32)&0xffff; }
const uint16_t minorIndex() const { return (_ordinal>>16)&0xffff; }
const uint16_t counter() const { return (_ordinal>>00)&0xffff; }
-
+
const Ordinal nextMajorIndex() const { assert(majorIndex() < 0xffff); return Ordinal(_ordinal+((uint64_t)1<<32)); }
const Ordinal nextMinorIndex() const { assert(minorIndex() < 0xffff); return Ordinal(_ordinal+((uint64_t)1<<16)); }
const Ordinal nextCounter() const { assert(counter() < 0xffff); return Ordinal(_ordinal+((uint64_t)1<<0)); }
public:
Ordinal() : _ordinal(0) {};
-
+
static const Ordinal NullOrdinal() { return Ordinal((uint64_t)0); }
const bool validOrdinal() const { return _ordinal != 0; }
// Thus, an object pulled in from a .a that was listed in a file list could use all three fields.
static const Ordinal makeArgOrdinal(uint16_t argIndex) { return Ordinal(kArgListPartition, argIndex, 0, 0); };
const Ordinal nextFileListOrdinal() const { return nextMinorIndex(); }
- const Ordinal archiveOrdinalWithMemberIndex(uint16_t index) const { return Ordinal(kArgListPartition, majorIndex(), minorIndex(), index); }
+ const Ordinal archiveOrdinalWithMemberIndex(uint16_t memberIndex) const { return Ordinal(partition(), majorIndex(), minorIndex(), memberIndex); }
// For indirect libraries the partition is IndirectDylibPartition and the counter is used or order the libraries.
static const ld::File::Ordinal indirectDylibBase() { return Ordinal(kIndirectDylibPartition, 0, 0, 0); }
// For linker options embedded in object files
static const ld::File::Ordinal linkeOptionBase() { return Ordinal(kIndirectDylibPartition, 1, 0, 0); }
- const Ordinal nextLinkerOptionOrdinal() { nextCounter(); return *this; };
-
+ const Ordinal nextLinkerOptionOrdinal() { return nextCounter(); };
+
};
typedef enum { Reloc, Dylib, Archive, Other } Type;
virtual bool forEachAtom(AtomHandler&) const = 0;
virtual bool justInTimeforEachAtom(const char* name, AtomHandler&) const = 0;
virtual ObjcConstraint objCConstraint() const { return objcConstraintNone; }
+ virtual bool objcHasCategoryClassPropertiesField() const { return false; }
virtual uint8_t swiftVersion() const { return 0; }
virtual uint32_t cpuSubType() const { return 0; }
virtual uint32_t subFileCount() const { return 1; }
//
enum MacVersionMin { macVersionUnset=0, mac10_4=0x000A0400, mac10_5=0x000A0500,
mac10_6=0x000A0600, mac10_7=0x000A0700, mac10_8=0x000A0800,
- mac10_9=0x000A0900, mac10_Future=0x10000000 };
+ mac10_9=0x000A0900, mac10_12=0x000A0C00, mac10_Future=0x10000000 };
enum IOSVersionMin { iOSVersionUnset=0, iOS_2_0=0x00020000, iOS_3_1=0x00030100,
iOS_4_2=0x00040200, iOS_4_3=0x00040300, iOS_5_0=0x00050000,
iOS_6_0=0x00060000, iOS_7_0=0x00070000, iOS_8_0=0x00080000,
- iOS_9_0=0x00090000, iOS_Future=0x10000000};
+ iOS_9_0=0x00090000, iOS_10_0=0x000A0000, iOS_Future=0x10000000};
enum WatchOSVersionMin { wOSVersionUnset=0, wOS_1_0=0x00010000, wOS_2_0=0x00020000 };
{
public:
virtual ~DylibHandler() {}
- virtual File* findDylib(const char* installPath, const char* fromPath) = 0;
+ virtual File* findDylib(const char* installPath, const ld::dylib::File* fromDylib, bool speculative) = 0;
};
File(const char* pth, time_t modTime, Ordinal ord)
: ld::File(pth, modTime, ord, Dylib), _dylibInstallPath(NULL), _frameworkName(NULL),
_dylibTimeStamp(0), _dylibCurrentVersion(0), _dylibCompatibilityVersion(0),
- _explicitlyLinked(false), _implicitlyLinked(false),
+ _explicitlyLinked(false), _implicitlyLinked(false), _speculativelyLoaded(false),
_lazyLoadedDylib(false), _forcedWeakLinked(false), _reExported(false),
_upward(false), _dead(false) { }
const char* installPath() const { return _dylibInstallPath; }
bool explicitlyLinked() const { return _explicitlyLinked; }
void setImplicitlyLinked() { _implicitlyLinked = true; }
bool implicitlyLinked() const { return _implicitlyLinked; }
-
+ void setSpeculativelyLoaded() { _speculativelyLoaded = true; }
+ bool speculativelyLoaded() const { return _speculativelyLoaded; }
+
// attributes of how dylib will be used when linked
void setWillBeLazyLoadedDylb() { _lazyLoadedDylib = true; }
bool willBeLazyLoadedDylib() const { return _lazyLoadedDylib; }
virtual bool providedExportAtom() const = 0;
virtual const char* parentUmbrella() const = 0;
virtual const std::vector<const char*>* allowableClients() const = 0;
+ virtual const std::vector<const char*>& rpaths() const = 0;
virtual bool hasWeakExternals() const = 0;
virtual bool deadStrippable() const = 0;
virtual bool hasWeakDefinition(const char* name) const = 0;
uint32_t _dylibCompatibilityVersion;
bool _explicitlyLinked;
bool _implicitlyLinked;
+ bool _speculativelyLoaded;
bool _lazyLoadedDylib;
bool _forcedWeakLinked;
bool _reExported;
bool finalAddressMode() const { return (_mode == modeFinalAddress); }
#endif
virtual const File* file() const = 0;
+ // Return the original file this atom belongs to, for instance for an LTO atom,
+ // file() would return the LTO MachO file instead of the original bitcode file.
+ virtual const ld::File* originalFile() const { return file(); }
virtual const char* translationUnitSource() const { return NULL; }
virtual const char* name() const = 0;
virtual uint64_t objectAddress() const = 0;
std::vector<FinalSection*> sections;
std::vector<ld::dylib::File*> dylibs;
+ std::vector<std::string> archivePaths;
std::vector<ld::relocatable::File::Stab> stabs;
AtomToSection atomToSection;
+ CStringSet unprocessedLinkerOptionLibraries;
+ CStringSet unprocessedLinkerOptionFrameworks;
CStringSet linkerOptionLibraries;
CStringSet linkerOptionFrameworks;
- CStringSet linkerOptionLibrariesProcessed;
- CStringSet linkerOptionFrameworksProcessed;
std::vector<const ld::Atom*> indirectBindingTable;
std::vector<const ld::relocatable::File*> filesWithBitcode;
+ std::vector<const ld::Atom*> deadAtoms;
std::unordered_set<const char*> allUndefProxies;
const ld::dylib::File* bundleLoader;
const Atom* entryPoint;
bool someObjectHasOptimizationHints;
bool dropAllBitcode;
bool embedMarkerOnly;
- std::string ltoBitcodePath;
+ std::vector<std::string> ltoBitcodePath;
};
namespace archive {
-typedef const struct ranlib* ConstRanLibPtr;
// forward reference
template <typename A> class File;
struct MemberState { ld::relocatable::File* file; const Entry *entry; bool logged; bool loaded; uint32_t index;};
bool loadMember(MemberState& state, ld::File::AtomHandler& handler, const char *format, ...) const;
- typedef std::unordered_map<const char*, const struct ranlib*, ld::CStringHash, ld::CStringEquals> NameToEntryMap;
+ typedef std::unordered_map<const char*, uint64_t, ld::CStringHash, ld::CStringEquals> NameToOffsetMap;
typedef typename A::P P;
typedef typename A::P::E E;
typedef std::map<const class Entry*, MemberState> MemberToStateMap;
- const struct ranlib* ranlibHashSearch(const char* name) const;
MemberState& makeObjectFileForMember(const Entry* member) const;
bool memberHasObjCCategories(const Entry* member) const;
void dumpTableOfContents();
void buildHashTable();
-
+#ifdef SYMDEF_64
+ void buildHashTable64();
+#endif
const uint8_t* _archiveFileContent;
uint64_t _archiveFilelength;
const struct ranlib* _tableOfContents;
+#ifdef SYMDEF_64
+ const struct ranlib_64* _tableOfContents64;
+#endif
uint32_t _tableOfContentCount;
const char* _tableOfContentStrings;
mutable MemberToStateMap _instantiatedEntries;
- NameToEntryMap _hashTable;
+ NameToOffsetMap _hashTable;
const bool _forceLoadAll;
const bool _forceLoadObjC;
const bool _forceLoadThis;
template <> cpu_type_t File<arm>::architecture() { return CPU_TYPE_ARM; }
template <> cpu_type_t File<arm64>::architecture() { return CPU_TYPE_ARM64; }
-
template <typename A>
bool File<A>::validMachOFile(const uint8_t* fileContent, uint64_t fileLength, const mach_o::relocatable::ParserOptions& opts)
{
// skip option table-of-content member
if ( (p==start) && ((strcmp(memberName, SYMDEF_SORTED) == 0) || (strcmp(memberName, SYMDEF) == 0)) )
continue;
+#ifdef SYMDEF_64
+ if ( (p==start) && ((strcmp(memberName, SYMDEF_64_SORTED) == 0) || (strcmp(memberName, SYMDEF_64) == 0)) )
+ continue;
+#endif
// archive is valid if first .o file is valid
return (validMachOFile(p->content(), p->contentSize(), opts) || validLTOFile(p->content(), p->contentSize(), opts));
}
ld::File::Ordinal ord, const ParserOptions& opts)
: ld::archive::File(strdup(pth), modTime, ord),
_archiveFileContent(fileContent), _archiveFilelength(fileLength),
- _tableOfContents(NULL), _tableOfContentCount(0), _tableOfContentStrings(NULL),
+ _tableOfContents(NULL),
+#ifdef SYMDEF_64
+ _tableOfContents64(NULL),
+#endif
+ _tableOfContentCount(0), _tableOfContentStrings(NULL),
_forceLoadAll(opts.forceLoadAll), _forceLoadObjC(opts.forceLoadObjC),
_forceLoadThis(opts.forceLoadThisArchive), _objc2ABI(opts.objcABI2), _verboseLoad(opts.verboseLoad),
_logAllFiles(opts.logAllFiles), _objOpts(opts.objOpts)
throw "malformed archive, perhaps wrong architecture";
this->buildHashTable();
}
+#ifdef SYMDEF_64
+ else if ( (strcmp(memberName, SYMDEF_64_SORTED) == 0) || (strcmp(memberName, SYMDEF_64) == 0) ) {
+ const uint8_t* contents = firstMember->content();
+ uint64_t ranlibArrayLen = E::get64(*((uint64_t*)contents));
+ _tableOfContents64 = (const struct ranlib_64*)&contents[8];
+ _tableOfContentCount = ranlibArrayLen / sizeof(struct ranlib_64);
+ _tableOfContentStrings = (const char*)&contents[ranlibArrayLen+16];
+ if ( ((uint8_t*)(&_tableOfContents[_tableOfContentCount]) > &fileContent[fileLength])
+ || ((uint8_t*)_tableOfContentStrings > &fileContent[fileLength]) )
+ throw "malformed archive, perhaps wrong architecture";
+ this->buildHashTable64();
+ }
+#endif
else
throw "archive has no table of contents";
}
p->getName(memberName, sizeof(memberName));
if ( (p==start) && ((strcmp(memberName, SYMDEF_SORTED) == 0) || (strcmp(memberName, SYMDEF) == 0)) )
continue;
+#ifdef SYMDEF_64
+ if ( (p==start) && ((strcmp(memberName, SYMDEF_64_SORTED) == 0) || (strcmp(memberName, SYMDEF_64) == 0)) )
+ continue;
+#endif
MemberState& state = this->makeObjectFileForMember(p);
didSome |= loadMember(state, handler, "%s forced load of %s(%s)\n", _forceLoadThis ? "-force_load" : "-all_load", this->path(), memberName);
}
}
else if ( _forceLoadObjC ) {
// call handler on all .o files in this archive containing objc classes
- for(typename NameToEntryMap::const_iterator it = _hashTable.begin(); it != _hashTable.end(); ++it) {
- if ( (strncmp(it->first, ".objc_c", 7) == 0) || (strncmp(it->first, "_OBJC_CLASS_$_", 14) == 0) ) {
- const Entry* member = (Entry*)&_archiveFileContent[E::get32(it->second->ran_off)];
+ for (const auto& entry : _hashTable) {
+ if ( (strncmp(entry.first, ".objc_c", 7) == 0) || (strncmp(entry.first, "_OBJC_CLASS_$_", 14) == 0) ) {
+ const Entry* member = (Entry*)&_archiveFileContent[entry.second];
MemberState& state = this->makeObjectFileForMember(member);
char memberName[256];
member->getName(memberName, sizeof(memberName));
// skip table-of-content member
if ( (member==start) && ((strcmp(mname, SYMDEF_SORTED) == 0) || (strcmp(mname, SYMDEF) == 0)) )
continue;
- MemberState& state = this->makeObjectFileForMember(member);
- // only look at files not already loaded
- if ( ! state.loaded ) {
- if ( this->memberHasObjCCategories(member) ) {
+#ifdef SYMDEF_64
+ if ( (member==start) && ((strcmp(mname, SYMDEF_64_SORTED) == 0) || (strcmp(mname, SYMDEF_64) == 0)) )
+ continue;
+#endif
+ if ( validMachOFile(member->content(), member->contentSize(), _objOpts) ) {
+ MemberState& state = this->makeObjectFileForMember(member);
+ // only look at files not already loaded
+ if ( ! state.loaded ) {
+ if ( this->memberHasObjCCategories(member) ) {
+ MemberState& state = this->makeObjectFileForMember(member);
+ char memberName[256];
+ member->getName(memberName, sizeof(memberName));
+ didSome |= loadMember(state, handler, "-ObjC forced load of %s(%s)\n", this->path(), memberName);
+ }
+ }
+ }
+ else if ( validLTOFile(member->content(), member->contentSize(), _objOpts) ) {
+ if ( lto::hasObjCCategory(member->content(), member->contentSize()) ) {
MemberState& state = this->makeObjectFileForMember(member);
- char memberName[256];
- member->getName(memberName, sizeof(memberName));
- didSome |= loadMember(state, handler, "-ObjC forced load of %s(%s)\n", this->path(), memberName);
+ // only look at files not already loaded
+ if ( ! state.loaded ) {
+ char memberName[256];
+ member->getName(memberName, sizeof(memberName));
+ didSome |= loadMember(state, handler, "-ObjC forced load of %s(%s)\n", this->path(), memberName);
+ }
}
}
}
return false;
// do a hash search of table of contents looking for requested symbol
- const struct ranlib* result = ranlibHashSearch(name);
- if ( result != NULL ) {
- const Entry* member = (Entry*)&_archiveFileContent[E::get32(result->ran_off)];
- MemberState& state = this->makeObjectFileForMember(member);
- char memberName[256];
- member->getName(memberName, sizeof(memberName));
- return loadMember(state, handler, "%s forced load of %s(%s)\n", name, this->path(), memberName);
- }
- //fprintf(stderr, "%s NOT found in archive %s\n", name, this->path());
- return false;
+ const auto& pos = _hashTable.find(name);
+ if ( pos == _hashTable.end() )
+ return false;
+
+ // do a hash search of table of contents looking for requested symbol
+ const Entry* member = (Entry*)&_archiveFileContent[pos->second];
+ MemberState& state = this->makeObjectFileForMember(member);
+ char memberName[256];
+ member->getName(memberName, sizeof(memberName));
+ return loadMember(state, handler, "%s forced load of %s(%s)\n", name, this->path(), memberName);
}
class CheckIsDataSymbolHandler : public ld::File::AtomHandler
return false;
// do a hash search of table of contents looking for requested symbol
- const struct ranlib* result = ranlibHashSearch(name);
- if ( result != NULL ) {
- const Entry* member = (Entry*)&_archiveFileContent[E::get32(result->ran_off)];
- MemberState& state = this->makeObjectFileForMember(member);
- // only call handler for each member once
- if ( ! state.loaded ) {
- CheckIsDataSymbolHandler checker(name);
- state.file->forEachAtom(checker);
- if ( checker.symbolIsDataDefinition() ) {
- char memberName[256];
- member->getName(memberName, sizeof(memberName));
- return loadMember(state, handler, "%s forced load of %s(%s)\n", name, this->path(), memberName);
- }
+ const auto& pos = _hashTable.find(name);
+ if ( pos == _hashTable.end() )
+ return false;
+
+ const Entry* member = (Entry*)&_archiveFileContent[pos->second];
+ MemberState& state = this->makeObjectFileForMember(member);
+ // only call handler for each member once
+ if ( ! state.loaded ) {
+ CheckIsDataSymbolHandler checker(name);
+ state.file->forEachAtom(checker);
+ if ( checker.symbolIsDataDefinition() ) {
+ char memberName[256];
+ member->getName(memberName, sizeof(memberName));
+ return loadMember(state, handler, "%s forced load of %s(%s)\n", name, this->path(), memberName);
}
}
+
//fprintf(stderr, "%s NOT found in archive %s\n", name, this->path());
return false;
}
-
-typedef const struct ranlib* ConstRanLibPtr;
-
-template <typename A>
-ConstRanLibPtr File<A>::ranlibHashSearch(const char* name) const
-{
- typename NameToEntryMap::const_iterator pos = _hashTable.find(name);
- if ( pos != _hashTable.end() )
- return pos->second;
- else
- return NULL;
-}
-
template <typename A>
void File<A>::buildHashTable()
{
for (int i = _tableOfContentCount-1; i >= 0; --i) {
const struct ranlib* entry = &_tableOfContents[i];
const char* entryName = &_tableOfContentStrings[E::get32(entry->ran_un.ran_strx)];
- if ( E::get32(entry->ran_off) > _archiveFilelength ) {
+ uint64_t offset = E::get32(entry->ran_off);
+ if ( offset > _archiveFilelength ) {
throwf("malformed archive TOC entry for %s, offset %d is beyond end of file %lld\n",
entryName, entry->ran_off, _archiveFilelength);
}
//const Entry* member = (Entry*)&_archiveFileContent[E::get32(entry->ran_off)];
//fprintf(stderr, "adding hash %d, %s -> %p\n", i, entryName, entry);
- _hashTable[entryName] = entry;
+ _hashTable[entryName] = offset;
+ }
+}
+
+#ifdef SYMDEF_64
+template <typename A>
+void File<A>::buildHashTable64()
+{
+ // walk through list backwards, adding/overwriting entries
+ // this assures that with duplicates those earliest in the list will be found
+ for (int i = _tableOfContentCount-1; i >= 0; --i) {
+ const struct ranlib_64* entry = &_tableOfContents64[i];
+ const char* entryName = &_tableOfContentStrings[E::get64(entry->ran_un.ran_strx)];
+ uint64_t offset = E::get64(entry->ran_off);
+ if ( offset > _archiveFilelength ) {
+ throwf("malformed archive TOC entry for %s, offset %lld is beyond end of file %lld\n",
+ entryName, entry->ran_off, _archiveFilelength);
+ }
+
+ //fprintf(stderr, "adding hash %d: %s -> 0x%0llX\n", i, entryName, offset);
+ _hashTable[entryName] = offset;
}
}
+#endif
template <typename A>
void File<A>::dumpTableOfContents()
{
public:
File(const char* path, time_t mTime, ld::File::Ordinal ordinal, Options::Platform platform,
- uint32_t linkMinOSVersion, bool linkingFlatNamespace, bool hoistImplicitPublicDylibs,
+ uint32_t linkMinOSVersion, bool allowWeakImports, bool linkingFlatNamespace, bool hoistImplicitPublicDylibs,
bool allowSimToMacOSX, bool addVers);
// overrides of ld::File
virtual bool providedExportAtom() const override final { return _providedAtom; }
virtual const char* parentUmbrella() const override final { return _parentUmbrella; }
virtual const std::vector<const char*>* allowableClients() const override final { return _allowableClients.empty() ? nullptr : &_allowableClients; }
+ virtual const std::vector<const char*>& rpaths() const override final { return _rpaths; }
virtual bool hasWeakExternals() const override final { return _hasWeakExports; }
virtual bool deadStrippable() const override final { return _deadStrippable; }
virtual bool hasWeakDefinition(const char* name) const override final;
protected:
bool isPublicLocation(const char* path) const;
- void addSymbol(const char* name, bool weak = false, bool tlv = false, pint_t address = 0);
private:
ld::Section _importProxySection;
std::vector<Dependent> _dependentDylibs;
ImportAtom<A>* _importAtom;
std::vector<const char*> _allowableClients;
+ std::vector<const char*> _rpaths;
const char* _parentUmbrella;
std::unique_ptr<ld::Bitcode> _bitcode;
const Options::Platform _platform;
bool _deadStrippable;
bool _hasPublicInstallName;
bool _appExtensionSafe;
-
+ const bool _allowWeakImports;
const bool _allowSimToMacOSXLinking;
const bool _addVersionLoadCommand;
template <typename A>
File<A>::File(const char* path, time_t mTime, ld::File::Ordinal ord, Options::Platform platform,
- uint32_t linkMinOSVersion, bool linkingFlatNamespace,
+ uint32_t linkMinOSVersion, bool allowWeakImports, bool linkingFlatNamespace,
bool hoistImplicitPublicDylibs,
bool allowSimToMacOSX, bool addVers)
: ld::dylib::File(path, mTime, ord),
_deadStrippable(false),
_hasPublicInstallName(false),
_appExtensionSafe(false),
+ _allowWeakImports(allowWeakImports),
_allowSimToMacOSXLinking(allowSimToMacOSX),
_addVersionLoadCommand(addVers)
{
fprintf(stderr, "processIndirectLibraries(%s)\n", this->installPath());
if ( _linkingFlat ) {
for (auto &dep : _dependentDylibs)
- dep.dylib = (File<A>*)handler->findDylib(dep.path, this->path());
+ dep.dylib = (File<A>*)handler->findDylib(dep.path, this, false);
}
else if ( _noRexports ) {
// MH_NO_REEXPORTED_DYLIBS bit set, then nothing to do
if ( log )
fprintf(stderr, "processIndirectLibraries() parent=%s, child=%s\n", this->installPath(), dep.path);
// a LC_REEXPORT_DYLIB, LC_SUB_UMBRELLA or LC_SUB_LIBRARY says we re-export this child
- dep.dylib = (File<A>*)handler->findDylib(dep.path, this->path());
+ dep.dylib = (File<A>*)handler->findDylib(dep.path, this, this->speculativelyLoaded());
if ( dep.dylib->hasPublicInstallName() && !dep.dylib->wrongOS() ) {
// promote this child to be automatically added as a direct dependent if this already is
if ( (this->explicitlyLinked() || this->implicitlyLinked()) && (strcmp(dep.path, dep.dylib->installPath()) == 0) ) {
}
else if ( !_explictReExportFound ) {
// see if child contains LC_SUB_FRAMEWORK with my name
- dep.dylib = (File<A>*)handler->findDylib(dep.path, this->path());
+ dep.dylib = (File<A>*)handler->findDylib(dep.path, this, this->speculativelyLoaded());
const char* parentUmbrellaName = dep.dylib->parentUmbrella();
if ( parentUmbrellaName != nullptr ) {
const char* parentName = this->path();
return false;
}
-template <typename A>
-void File<A>::addSymbol(const char* name, bool weakDef, bool tlv, pint_t address)
-{
- // symbols that start with $ld$ are meta-data to the static linker
- // <rdar://problem/5182537> need way for ld and dyld to see different exported symbols in a dylib
- if ( strncmp(name, "$ld$", 4) == 0 ) {
- // $ld$ <action> $ <condition> $ <symbol-name>
- const char* symAction = &name[4];
- const char* symCond = strchr(symAction, '$');
- if ( symCond != nullptr ) {
- char curOSVers[16];
- sprintf(curOSVers, "$os%d.%d$", (_linkMinOSVersion >> 16), ((_linkMinOSVersion >> 8) & 0xFF));
- if ( strncmp(symCond, curOSVers, strlen(curOSVers)) == 0 ) {
- const char* symName = strchr(&symCond[1], '$');
- if ( symName != nullptr ) {
- ++symName;
- if ( strncmp(symAction, "hide$", 5) == 0 ) {
- if ( _s_logHashtable )
- fprintf(stderr, " adding %s to ignore set for %s\n", symName, this->path());
- _ignoreExports.insert(strdup(symName));
- return;
- }
- else if ( strncmp(symAction, "add$", 4) == 0 ) {
- this->addSymbol(symName, weakDef);
- return;
- }
- else if ( strncmp(symAction, "install_name$", 13) == 0 ) {
- _dylibInstallPath = strdup(symName);
- _installPathOverride = true;
- // <rdar://problem/14448206> CoreGraphics redirects to ApplicationServices, but with wrong compat version
- if ( strcmp(_dylibInstallPath, "/System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices") == 0 )
- _dylibCompatibilityVersion = Options::parseVersionNumber32("1.0");
- return;
- }
- else if ( strncmp(symAction, "compatibility_version$", 22) == 0 ) {
- _dylibCompatibilityVersion = Options::parseVersionNumber32(symName);
- return;
- }
- else {
- warning("bad symbol action: %s in dylib %s", name, this->path());
- }
- }
- }
- }
- else {
- warning("bad symbol condition: %s in dylib %s", name, this->path());
- }
- }
-
- // add symbol as possible export if we are not supposed to ignore it
- if ( _ignoreExports.count(name) == 0 ) {
- AtomAndWeak bucket = { nullptr, weakDef, tlv, address };
- if ( this->_s_logHashtable )
- fprintf(stderr, " adding %s to hash table for %s\n", name, this->path());
- _atoms[strdup(name)] = bucket;
- }
-}
-
// <rdar://problem/5529626> If only weak_import symbols are used, linker should use LD_LOAD_WEAK_DYLIB
template <typename A>
bool File<A>::allSymbolsAreWeakImported() const
#include <map>
#include <unordered_set>
#include <unordered_map>
+#include <iostream>
+#include <fstream>
#include "MachOFileAbstraction.hpp"
#include "Architectures.hpp"
public:
InternalAtom(class File& f);
// overrides of ld::Atom
- virtual ld::File* file() const { return &_file; }
- virtual const char* name() const { return "import-atom"; }
- virtual uint64_t size() const { return 0; }
- virtual uint64_t objectAddress() const { return 0; }
- virtual void copyRawContent(uint8_t buffer[]) const { }
- virtual void setScope(Scope) { }
- virtual ld::Fixup::iterator fixupsBegin() const { return &_undefs[0]; }
- virtual ld::Fixup::iterator fixupsEnd() const { return &_undefs[_undefs.size()]; }
+ ld::File* file() const override { return &_file; }
+ const char* name() const override { return "import-atom"; }
+ uint64_t size() const override { return 0; }
+ uint64_t objectAddress() const override { return 0; }
+ void copyRawContent(uint8_t buffer[]) const override { }
+ ld::Fixup::iterator fixupsBegin() const override { return &_undefs[0]; }
+ ld::Fixup::iterator fixupsEnd() const override { return &_undefs[_undefs.size()]; }
// for adding references to symbols outside bitcode file
void addReference(const char* nm)
public:
File(const char* path, time_t mTime, ld::File::Ordinal ordinal,
const uint8_t* content, uint32_t contentLength, cpu_type_t arch);
- virtual ~File();
+ ~File() override;
// overrides of ld::File
- virtual bool forEachAtom(ld::File::AtomHandler&) const;
- virtual bool justInTimeforEachAtom(const char* name, ld::File::AtomHandler&) const
+ bool forEachAtom(ld::File::AtomHandler&) const override;
+ bool justInTimeforEachAtom(const char* name, ld::File::AtomHandler&) const override
{ return false; }
- virtual uint32_t cpuSubType() const { return _cpuSubType; }
+ uint32_t cpuSubType() const override { return _cpuSubType; }
// overrides of ld::relocatable::File
- virtual DebugInfoKind debugInfo() const { return _debugInfo; }
- virtual const char* debugInfoPath() const { return _debugInfoPath; }
- virtual time_t debugInfoModificationTime() const
+ DebugInfoKind debugInfo() const override { return _debugInfo; }
+ const char* debugInfoPath() const override { return _debugInfoPath; }
+ time_t debugInfoModificationTime() const override
{ return _debugInfoModTime; }
- virtual const std::vector<ld::relocatable::File::Stab>* stabs() const { return NULL; }
- virtual bool canScatterAtoms() const { return true; }
- virtual LinkerOptionsList* linkerOptions() const { return NULL; }
-
-
+ const std::vector<ld::relocatable::File::Stab>* stabs() const override { return NULL; }
+ bool canScatterAtoms() const override { return true; }
+ LinkerOptionsList* linkerOptions() const override { return NULL; }
+ bool isThinLTO() const { return _isThinLTO; }
+ void setIsThinLTO(bool ThinLTO) { _isThinLTO = ThinLTO; }
+ // fixme rdar://24734472 objCConstraint() and objcHasCategoryClassProperties()
void release();
lto_module_t module() { return _module; }
class InternalAtom& internalAtom() { return _internalAtom; }
static bool sSupportsLocalContext;
static bool sHasTriedLocalContext;
bool mergeIntoGenerator(lto_code_gen_t generator, bool useSetModule);
+#if LTO_API_VERSION >= 18
+ void addToThinGenerator(thinlto_code_gen_t generator);
+#endif
private:
friend class Atom;
friend class InternalAtom;
friend class Parser;
-
+
+ bool _isThinLTO;
cpu_type_t _architecture;
class InternalAtom _internalAtom;
class Atom* _atomArray;
ld::Atom::Definition d, ld::Atom::Combine c, ld::Atom::Alignment a, bool ah);
// overrides of ld::Atom
- virtual ld::File* file() const { return &_file; }
- virtual const char* translationUnitSource() const
+ const ld::File* file() const override { return (_compiledAtom ? _compiledAtom->file() : &_file ); }
+ const ld::File* originalFile() const override { return &_file; }
+ const char* translationUnitSource() const override
{ return (_compiledAtom ? _compiledAtom->translationUnitSource() : NULL); }
- virtual const char* name() const { return _name; }
- virtual uint64_t size() const { return (_compiledAtom ? _compiledAtom->size() : 0); }
- virtual uint64_t objectAddress() const { return (_compiledAtom ? _compiledAtom->objectAddress() : 0); }
- virtual void copyRawContent(uint8_t buffer[]) const
+ const char* name() const override { return _name; }
+ uint64_t size() const override { return (_compiledAtom ? _compiledAtom->size() : 0); }
+ uint64_t objectAddress() const override { return (_compiledAtom ? _compiledAtom->objectAddress() : 0); }
+ void copyRawContent(uint8_t buffer[]) const override
{ if (_compiledAtom) _compiledAtom->copyRawContent(buffer); }
- virtual const uint8_t* rawContentPointer() const
+ const uint8_t* rawContentPointer() const override
{ return (_compiledAtom ? _compiledAtom->rawContentPointer() : NULL); }
- virtual unsigned long contentHash(const class ld::IndirectBindingTable& ibt) const
+ unsigned long contentHash(const class ld::IndirectBindingTable& ibt) const override
{ return (_compiledAtom ? _compiledAtom->contentHash(ibt) : 0); }
- virtual bool canCoalesceWith(const ld::Atom& rhs, const class ld::IndirectBindingTable& ibt) const
+ bool canCoalesceWith(const ld::Atom& rhs, const class ld::IndirectBindingTable& ibt) const override
{ return (_compiledAtom ? _compiledAtom->canCoalesceWith(rhs,ibt) : false); }
- virtual ld::Fixup::iterator fixupsBegin() const
+ ld::Fixup::iterator fixupsBegin() const override
{ return (_compiledAtom ? _compiledAtom->fixupsBegin() : (ld::Fixup*)&_file._fixupToInternal); }
- virtual ld::Fixup::iterator fixupsEnd() const
+ ld::Fixup::iterator fixupsEnd() const override
{ return (_compiledAtom ? _compiledAtom->fixupsEnd() : &((ld::Fixup*)&_file._fixupToInternal)[1]); }
- virtual ld::Atom::UnwindInfo::iterator beginUnwind() const
+ ld::Atom::UnwindInfo::iterator beginUnwind() const override
{ return (_compiledAtom ? _compiledAtom->beginUnwind() : NULL); }
- virtual ld::Atom::UnwindInfo::iterator endUnwind() const
+ ld::Atom::UnwindInfo::iterator endUnwind() const override
{ return (_compiledAtom ? _compiledAtom->endUnwind() : NULL); }
- virtual ld::Atom::LineInfo::iterator beginLineInfo() const
+ ld::Atom::LineInfo::iterator beginLineInfo() const override
{ return (_compiledAtom ? _compiledAtom->beginLineInfo() : NULL); }
- virtual ld::Atom::LineInfo::iterator endLineInfo() const
+ ld::Atom::LineInfo::iterator endLineInfo() const override
{ return (_compiledAtom ? _compiledAtom->endLineInfo() : NULL); }
const ld::Atom* compiledAtom() { return _compiledAtom; }
std::vector<const ld::Atom*>& newAtoms,
std::vector<const char*>& additionalUndefines);
- static const char* ltoVersion() { return ::lto_get_version(); }
+ static const char* ltoVersion() { return ::lto_get_version(); }
private:
+
static const char* tripletPrefixForArch(cpu_type_t arch);
- static ld::relocatable::File* parseMachOFile(const uint8_t* p, size_t len, const OptimizeOptions& options);
+ static ld::relocatable::File* parseMachOFile(const uint8_t* p, size_t len, const std::string &path, const OptimizeOptions& options,
+ ld::File::Ordinal ordinal);
#if LTO_API_VERSION >= 7
static void ltoDiagnosticHandler(lto_codegen_diagnostic_severity_t, const char*, void*);
#endif
class AtomSyncer : public ld::File::AtomHandler {
public:
AtomSyncer(std::vector<const char*>& a, std::vector<const ld::Atom*>&na,
- CStringToAtom la, CStringToAtom dla, const OptimizeOptions& options) :
- _options(options), _additionalUndefines(a), _newAtoms(na), _llvmAtoms(la), _deadllvmAtoms(dla) { }
- virtual void doAtom(const class ld::Atom&);
- virtual void doFile(const class ld::File&) { }
+ const CStringToAtom &la, const CStringToAtom &dla, const OptimizeOptions& options) :
+ _options(options), _additionalUndefines(a), _newAtoms(na), _llvmAtoms(la), _deadllvmAtoms(dla), _lastProxiedAtom(NULL), _lastProxiedFile(NULL) {}
+ void doAtom(const class ld::Atom&) override;
+ void doFile(const class ld::File&) override { }
-
const OptimizeOptions& _options;
std::vector<const char*>& _additionalUndefines;
std::vector<const ld::Atom*>& _newAtoms;
- CStringToAtom _llvmAtoms;
- CStringToAtom _deadllvmAtoms;
+ const CStringToAtom &_llvmAtoms;
+ const CStringToAtom &_deadllvmAtoms;
+ const ld::Atom* _lastProxiedAtom;
+ const ld::File* _lastProxiedFile;
};
+ static void setPreservedSymbols(const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ CStringToAtom &deadllvmAtoms,
+ CStringToAtom &llvmAtoms,
+ lto_code_gen_t generator);
+
+ static std::tuple<uint8_t *, size_t> codegen(const OptimizeOptions& options,
+ ld::Internal& state,
+ lto_code_gen_t generator,
+ std::string& object_path);
+
+
+ static void loadMachO(ld::relocatable::File* machoFile,
+ const OptimizeOptions& options,
+ ld::File::AtomHandler& handler,
+ std::vector<const ld::Atom*>& newAtoms,
+ std::vector<const char*>& additionalUndefines,
+ CStringToAtom &llvmAtoms,
+ CStringToAtom &deadllvmAtoms);
+
+ static bool optimizeLTO(const std::vector<File*> files,
+ const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ ld::File::AtomHandler& handler,
+ std::vector<const ld::Atom*>& newAtoms,
+ std::vector<const char*>& additionalUndefines);
+
+ static bool optimizeThinLTO(const std::vector<File*>& Files,
+ const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ ld::File::AtomHandler& handler,
+ std::vector<const ld::Atom*>& newAtoms,
+ std::vector<const char*>& additionalUndefines);
+
+ static thinlto_code_gen_t init_thinlto_codegen(const std::vector<File*>& files,
+ const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ CStringToAtom& deadllvmAtoms,
+ CStringToAtom& llvmAtoms);
+
static std::vector<File*> _s_files;
+ static bool _s_llvmOptionsProcessed;
};
std::vector<File*> Parser::_s_files;
+bool Parser::_s_llvmOptionsProcessed = false;
bool Parser::validFile(const uint8_t* fileContent, uint64_t fileLength, cpu_type_t architecture, cpu_subtype_t subarch)
}
-ld::relocatable::File* Parser::parseMachOFile(const uint8_t* p, size_t len, const OptimizeOptions& options)
+ld::relocatable::File* Parser::parseMachOFile(const uint8_t* p, size_t len, const std::string &path, const OptimizeOptions& options,
+ ld::File::Ordinal ordinal)
{
mach_o::relocatable::ParserOptions objOpts;
objOpts.architecture = options.arch;
objOpts.simulator = options.simulator;
objOpts.ignoreMismatchPlatform = options.ignoreMismatchPlatform;
objOpts.platform = options.platform;
+ objOpts.minOSVersion = options.minOSVersion;
objOpts.subType = 0;
objOpts.srcKind = ld::relocatable::File::kSourceLTO;
objOpts.treateBitcodeAsData = false;
objOpts.usingBitcode = options.bitcodeBundle;
objOpts.maxDefaultCommonAlignment = options.maxDefaultCommonAlignment;
- // mach-o parsing is done in-memory, but need path for debug notes
- const char* path = "/tmp/lto.o";
+ const char *object_path = path.c_str();
+ if (path.empty())
+ object_path = "/tmp/lto.o";
+
time_t modTime = 0;
- if ( options.tmpObjectFilePath != NULL ) {
- path = options.tmpObjectFilePath;
- struct stat statBuffer;
- if ( stat(options.tmpObjectFilePath, &statBuffer) == 0 )
- modTime = statBuffer.st_mtime;
- }
-
- ld::relocatable::File* result = mach_o::relocatable::parse(p, len, path, modTime, ld::File::Ordinal::LTOOrdinal(), objOpts);
+ struct stat statBuffer;
+ if ( stat(object_path, &statBuffer) == 0 )
+ modTime = statBuffer.st_mtime;
+
+ ld::relocatable::File* result = mach_o::relocatable::parse(p, len, strdup(object_path), modTime, ordinal, objOpts);
if ( result != NULL )
return result;
throw "LLVM LTO, file is not of required architecture";
File::File(const char* pth, time_t mTime, ld::File::Ordinal ordinal, const uint8_t* content, uint32_t contentLength, cpu_type_t arch)
- : ld::relocatable::File(pth,mTime,ordinal), _architecture(arch), _internalAtom(*this),
+ : ld::relocatable::File(pth,mTime,ordinal), _isThinLTO(false), _architecture(arch), _internalAtom(*this),
_atomArray(NULL), _atomArrayCount(0), _module(NULL), _path(pth),
_content(content), _contentLength(contentLength), _debugInfoPath(pth),
_section("__TEXT_", "__tmp_lto", ld::Section::typeTempLTO),
throwf("could not parse object file %s: '%s', using libLTO version '%s'", pth, ::lto_get_error_message(), ::lto_get_version());
if ( log ) fprintf(stderr, "bitcode file: %s\n", pth);
-
+
+#if LTO_API_VERSION >= 18
+ _isThinLTO = ::lto_module_is_thinlto(_module);
+#endif
+
// create atom for each global symbol in module
uint32_t count = ::lto_module_get_num_symbols(_module);
_atomArray = (Atom*)malloc(sizeof(Atom)*count);
return false;
}
+#if LTO_API_VERSION >= 18
+void File::addToThinGenerator(thinlto_code_gen_t generator) {
+ assert(!_module && "Expected module to be disposed");
+ ::thinlto_codegen_add_module(generator, _path, (const char *)_content, _contentLength);
+}
+#endif
+
void File::release()
{
if ( _module != NULL )
}
#endif
-bool Parser::optimize( const std::vector<const ld::Atom*>& allAtoms,
- ld::Internal& state,
- const OptimizeOptions& options,
- ld::File::AtomHandler& handler,
- std::vector<const ld::Atom*>& newAtoms,
- std::vector<const char*>& additionalUndefines)
-{
- const bool logMustPreserve = false;
- const bool logExtraOptions = false;
- const bool logBitcodeFiles = false;
- const bool logAtomsBeforeSync = false;
-
- // exit quickly if nothing to do
- if ( _s_files.size() == 0 )
- return false;
-
- // print out LTO version string if -v was used
- if ( options.verbose )
- fprintf(stderr, "%s\n", ::lto_get_version());
-
- // create optimizer and add each Reader
- lto_code_gen_t generator = NULL;
-#if LTO_API_VERSION >= 11
- if ( File::sSupportsLocalContext )
- generator = ::lto_codegen_create_in_local_context();
- else
-#endif
- generator = ::lto_codegen_create();
-#if LTO_API_VERSION >= 7
- lto_codegen_set_diagnostic_handler(generator, ltoDiagnosticHandler, NULL);
-#endif
-
- // <rdar://problem/12379604> The order that files are merged must match command line order
- std::sort(_s_files.begin(), _s_files.end(), CommandLineOrderFileSorter());
- ld::File::Ordinal lastOrdinal;
-
- // When flto_codegen_only is on and we have a single .bc file, use lto_codegen_set_module instead of
- // lto_codegen_add_module, to make sure the the destination module will be the same as the input .bc file.
- bool useSetModule = false;
-#if LTO_API_VERSION >= 13
- useSetModule = (_s_files.size() == 1) && options.ltoCodegenOnly && (::lto_api_version() >= 13);
-#endif
- for (std::vector<File*>::iterator it=_s_files.begin(); it != _s_files.end(); ++it) {
- File* f = *it;
- assert(f->ordinal() > lastOrdinal);
- if ( logBitcodeFiles && !useSetModule) fprintf(stderr, "lto_codegen_add_module(%s)\n", f->path());
- if ( logBitcodeFiles && useSetModule) fprintf(stderr, "lto_codegen_set_module(%s)\n", f->path());
- if ( f->mergeIntoGenerator(generator, useSetModule) )
- throwf("lto: could not merge in %s because '%s', using libLTO version '%s'", f->path(), ::lto_get_error_message(), ::lto_get_version());
- lastOrdinal = f->ordinal();
- }
-
- // add any -mllvm command line options
- for (std::vector<const char*>::const_iterator it=options.llvmOptions->begin(); it != options.llvmOptions->end(); ++it) {
- if ( logExtraOptions ) fprintf(stderr, "passing option to llvm: %s\n", *it);
- ::lto_codegen_debug_options(generator, *it);
- }
- // <rdar://problem/13687397> Need a way for LTO to get cpu variants (until that info is in bitcode)
- if ( options.mcpu != NULL )
- ::lto_codegen_set_cpu(generator, options.mcpu);
+/// Instruct libLTO about the list of symbols to preserve, compute deadllvmAtoms and llvmAtoms
+void Parser::setPreservedSymbols( const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ CStringToAtom &deadllvmAtoms,
+ CStringToAtom &llvmAtoms,
+ lto_code_gen_t generator) {
+ const bool logMustPreserve = false;
- // The atom graph uses directed edges (references). Collect all references where
- // originating atom is not part of any LTO Reader. This allows optimizer to optimize an
- // external (i.e. not originated from same .o file) reference if all originating atoms are also
+ // The atom graph uses directed edges (references). Collect all references where
+ // originating atom is not part of any LTO Reader. This allows optimizer to optimize an
+ // external (i.e. not originated from same .o file) reference if all originating atoms are also
// defined in llvm bitcode file.
CStringSet nonLLVMRefs;
- CStringToAtom llvmAtoms;
- bool hasNonllvmAtoms = false;
+ bool hasNonllvmAtoms = false;
for (std::vector<const ld::Atom*>::const_iterator it = allAtoms.begin(); it != allAtoms.end(); ++it) {
const ld::Atom* atom = *it;
- // only look at references that come from an atom that is not an llvm atom
- if ( atom->contentType() != ld::Atom::typeLTOtemporary ) {
+ // only look at references that come from an atom that is not an LTO atom
+ if (atom->contentType() != ld::Atom::typeLTOtemporary ||
+ ((lto::File *)atom->file())->isThinLTO()) {
if ( (atom->section().type() != ld::Section::typeMachHeader) && (atom->definition() != ld::Atom::definitionProxy) ) {
hasNonllvmAtoms = true;
}
switch ( fit->binding ) {
case ld::Fixup::bindingDirectlyBound:
// that reference an llvm atom
- if ( fit->u.target->contentType() == ld::Atom::typeLTOtemporary )
+ if ( fit->u.target->contentType() == ld::Atom::typeLTOtemporary )
nonLLVMRefs.insert(fit->u.target->name());
break;
case ld::Fixup::bindingsIndirectlyBound:
}
// if entry point is in a llvm bitcode file, it must be preserved by LTO
if ( state.entryPoint!= NULL ) {
- if ( state.entryPoint->contentType() == ld::Atom::typeLTOtemporary )
+ if ( state.entryPoint->contentType() == ld::Atom::typeLTOtemporary )
nonLLVMRefs.insert(state.entryPoint->name());
}
-
+
// deadAtoms are the atoms that the linker coalesced. For instance weak or tentative definitions
// overriden by another atom. If any of these deadAtoms are llvm atoms and they were replaced
- // with a mach-o atom, we need to tell the lto engine to preserve (not optimize away) its dead
+ // with a mach-o atom, we need to tell the lto engine to preserve (not optimize away) its dead
// atom so that the linker can replace it with the mach-o one later.
- CStringToAtom deadllvmAtoms;
for (std::vector<const ld::Atom*>::const_iterator it = allAtoms.begin(); it != allAtoms.end(); ++it) {
const ld::Atom* atom = *it;
if ( atom->coalescedAway() && (atom->contentType() == ld::Atom::typeLTOtemporary) ) {
if ( llvmAtom->coalescedAway() ) {
const char* name = llvmAtom->name();
if ( deadllvmAtoms.find(name) == deadllvmAtoms.end() ) {
- if ( logMustPreserve )
+ if ( logMustPreserve )
fprintf(stderr, "lto_codegen_add_must_preserve_symbol(%s) because linker coalesce away and replace with a mach-o atom\n", name);
::lto_codegen_add_must_preserve_symbol(generator, name);
deadllvmAtoms[name] = (Atom*)llvmAtom;
}
}
}
-
+
// tell code generator about symbols that must be preserved
for (CStringToAtom::iterator it = llvmAtoms.begin(); it != llvmAtoms.end(); ++it) {
const char* name = it->first;
// 1 - atom scope is global (and not linkage unit).
// 2 - included in nonLLVMRefs set.
// If a symbol is not listed in exportList then LTO is free to optimize it away.
- if ( (atom->scope() == ld::Atom::scopeGlobal) && options.preserveAllGlobals ) {
+ if ( (atom->scope() == ld::Atom::scopeGlobal) && options.preserveAllGlobals ) {
if ( logMustPreserve ) fprintf(stderr, "lto_codegen_add_must_preserve_symbol(%s) because global symbol\n", name);
::lto_codegen_add_must_preserve_symbol(generator, name);
}
::lto_codegen_add_must_preserve_symbol(generator, name);
}
}
-
+
// <rdar://problem/16165191> tell code generator to preserve initial undefines
for( std::vector<const char*>::const_iterator it=options.initialUndefines->begin(); it != options.initialUndefines->end(); ++it) {
if ( logMustPreserve ) fprintf(stderr, "lto_codegen_add_must_preserve_symbol(%s) because it is an initial undefine\n", *it);
::lto_codegen_add_must_preserve_symbol(generator, *it);
}
- // special case running ld -r on all bitcode files to produce another bitcode file (instead of mach-o)
- if ( options.relocatable && !hasNonllvmAtoms ) {
+ // special case running ld -r on all bitcode files to produce another bitcode file (instead of mach-o)
+ if ( options.relocatable && !hasNonllvmAtoms ) {
#if LTO_API_VERSION >= 15
::lto_codegen_set_should_embed_uselists(generator, false);
#endif
exit(0);
}
warning("could not produce merged bitcode file");
- }
-
- // set code-gen model
- lto_codegen_model model = LTO_CODEGEN_PIC_MODEL_DYNAMIC;
+ }
+
+}
+
+// Retrieve the codegen model from the options
+static lto_codegen_model getCodeModel(const OptimizeOptions& options) {
if ( options.mainExecutable ) {
if ( options.staticExecutable ) {
// x86_64 "static" or any "-static -pie" is really dynamic code model
if ( (options.arch == CPU_TYPE_X86_64) || options.pie )
- model = LTO_CODEGEN_PIC_MODEL_DYNAMIC;
+ return LTO_CODEGEN_PIC_MODEL_DYNAMIC;
else
- model = LTO_CODEGEN_PIC_MODEL_STATIC;
+ return LTO_CODEGEN_PIC_MODEL_STATIC;
}
else {
if ( options.pie )
- model = LTO_CODEGEN_PIC_MODEL_DYNAMIC;
+ return LTO_CODEGEN_PIC_MODEL_DYNAMIC;
else
- model = LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC;
+ return LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC;
}
}
else {
if ( options.allowTextRelocs )
- model = LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC;
+ return LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC;
else
- model = LTO_CODEGEN_PIC_MODEL_DYNAMIC;
+ return LTO_CODEGEN_PIC_MODEL_DYNAMIC;
}
- if ( ::lto_codegen_set_pic_model(generator, model) )
+
+}
+
+std::tuple<uint8_t *, size_t> Parser::codegen(const OptimizeOptions& options,
+ ld::Internal& state,
+ lto_code_gen_t generator,
+ std::string& object_path) {
+ uint8_t *machOFile;
+ size_t machOFileLen;
+
+ if ( ::lto_codegen_set_pic_model(generator, getCodeModel(options)) )
throwf("could not create set codegen model: %s", lto_get_error_message());
- // if requested, save off merged bitcode file
- if ( options.saveTemps ) {
- char tempBitcodePath[MAXPATHLEN];
- strcpy(tempBitcodePath, options.outputFilePath);
- strcat(tempBitcodePath, ".lto.bc");
+ // if requested, save off merged bitcode file
+ if ( options.saveTemps ) {
+ char tempBitcodePath[MAXPATHLEN];
+ strcpy(tempBitcodePath, options.outputFilePath);
+ strcat(tempBitcodePath, ".lto.bc");
#if LTO_API_VERSION >= 15
- ::lto_codegen_set_should_embed_uselists(generator, true);
+ ::lto_codegen_set_should_embed_uselists(generator, true);
#endif
- ::lto_codegen_write_merged_modules(generator, tempBitcodePath);
- }
+ ::lto_codegen_write_merged_modules(generator, tempBitcodePath);
+ }
#if LTO_API_VERSION >= 3
// find assembler next to linker
useSplitAPI = true;
#endif
- size_t machOFileLen = 0;
- const uint8_t* machOFile = NULL;
if ( useSplitAPI) {
#if LTO_API_VERSION >= 12
#if LTO_API_VERSION >= 14
- if ( ::lto_api_version() >= 14 && options.ltoCodegenOnly)
- lto_codegen_set_should_internalize(generator, false);
+ if ( ::lto_api_version() >= 14 && options.ltoCodegenOnly)
+ lto_codegen_set_should_internalize(generator, false);
#endif
// run optimizer
if ( !options.ltoCodegenOnly && ::lto_codegen_optimize(generator) )
#endif
::lto_codegen_write_merged_modules(generator, tempOptBitcodePath);
if ( options.bitcodeBundle )
- state.ltoBitcodePath = tempOptBitcodePath;
+ state.ltoBitcodePath.push_back(tempOptBitcodePath);
}
// run code generator
::lto_codegen_write_merged_modules(generator, tempOptBitcodePath);
}
}
-
- // if requested, save off temp mach-o file
- if ( options.saveTemps ) {
- char tempMachoPath[MAXPATHLEN];
- strcpy(tempMachoPath, options.outputFilePath);
- strcat(tempMachoPath, ".lto.o");
- int fd = ::open(tempMachoPath, O_CREAT | O_WRONLY | O_TRUNC, 0666);
+
+ // if requested, save off temp mach-o file
+ if ( options.saveTemps ) {
+ char tempMachoPath[MAXPATHLEN];
+ strcpy(tempMachoPath, options.outputFilePath);
+ strcat(tempMachoPath, ".lto.o");
+ int fd = ::open(tempMachoPath, O_CREAT | O_WRONLY | O_TRUNC, 0666);
if ( fd != -1) {
::write(fd, machOFile, machOFileLen);
::close(fd);
}
// if needed, save temp mach-o file to specific location
- if ( options.tmpObjectFilePath != NULL ) {
- int fd = ::open(options.tmpObjectFilePath, O_CREAT | O_WRONLY | O_TRUNC, 0666);
+ if ( !object_path.empty() ) {
+ int fd = ::open(object_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
if ( fd != -1) {
::write(fd, machOFile, machOFileLen);
::close(fd);
}
else {
- warning("could not write LTO temp file '%s', errno=%d", options.tmpObjectFilePath, errno);
+ warning("could not write LTO temp file '%s', errno=%d", object_path.c_str(), errno);
}
}
-
- // parse generated mach-o file into a MachOReader
- ld::relocatable::File* machoFile = parseMachOFile(machOFile, machOFileLen, options);
-
+ return std::make_tuple(machOFile, machOFileLen);
+}
+
+/// Load the MachO located in buffer \p machOFile with size \p machOFileLen.
+/// The loaded atoms are sync'ed using all the supplied lists.
+void Parser::loadMachO(ld::relocatable::File* machoFile,
+ const OptimizeOptions& options,
+ ld::File::AtomHandler& handler,
+ std::vector<const ld::Atom*>& newAtoms,
+ std::vector<const char*>& additionalUndefines,
+ CStringToAtom &llvmAtoms,
+ CStringToAtom &deadllvmAtoms) {
+ const bool logAtomsBeforeSync = false;
+
// sync generated mach-o atoms with existing atoms ld knows about
if ( logAtomsBeforeSync ) {
fprintf(stderr, "llvmAtoms:\n");
}
AtomSyncer syncer(additionalUndefines, newAtoms, llvmAtoms, deadllvmAtoms, options);
machoFile->forEachAtom(syncer);
-
- // Remove InternalAtoms from ld
- for (std::vector<File*>::iterator it=_s_files.begin(); it != _s_files.end(); ++it) {
- (*it)->internalAtom().setCoalescedAway();
+
+ // notify about file level attributes
+ handler.doFile(*machoFile);
+}
+
+// Full LTO processing
+bool Parser::optimizeLTO(const std::vector<File*> files,
+ const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ ld::File::AtomHandler& handler,
+ std::vector<const ld::Atom*>& newAtoms,
+ std::vector<const char*>& additionalUndefines) {
+ const bool logExtraOptions = false;
+ const bool logBitcodeFiles = false;
+
+ if (files.empty())
+ return true;
+
+ // create optimizer and add each Reader
+ lto_code_gen_t generator = NULL;
+#if LTO_API_VERSION >= 11
+ if ( File::sSupportsLocalContext )
+ generator = ::lto_codegen_create_in_local_context();
+ else
+#endif
+ generator = ::lto_codegen_create();
+#if LTO_API_VERSION >= 7
+ lto_codegen_set_diagnostic_handler(generator, ltoDiagnosticHandler, NULL);
+#endif
+
+ ld::File::Ordinal lastOrdinal;
+
+ // When flto_codegen_only is on and we have a single .bc file, use lto_codegen_set_module instead of
+ // lto_codegen_add_module, to make sure the the destination module will be the same as the input .bc file.
+ bool useSetModule = false;
+#if LTO_API_VERSION >= 13
+ useSetModule = (files.size() == 1) && options.ltoCodegenOnly && (::lto_api_version() >= 13);
+#endif
+ for (auto *f : files) {
+ assert(f->ordinal() > lastOrdinal);
+ if ( logBitcodeFiles && !useSetModule ) fprintf(stderr, "lto_codegen_add_module(%s)\n", f->path());
+ if ( logBitcodeFiles && useSetModule ) fprintf(stderr, "lto_codegen_set_module(%s)\n", f->path());
+ if ( f->mergeIntoGenerator(generator, useSetModule) )
+ throwf("lto: could not merge in %s because '%s', using libLTO version '%s'", f->path(), ::lto_get_error_message(), ::lto_get_version());
+ lastOrdinal = f->ordinal();
+ }
+
+ // add any -mllvm command line options
+ if ( !_s_llvmOptionsProcessed ) {
+ for (const char* opt : *options.llvmOptions) {
+ if ( logExtraOptions ) fprintf(stderr, "passing option to llvm: %s\n", opt);
+ ::lto_codegen_debug_options(generator, opt);
+ }
+ _s_llvmOptionsProcessed = true;
}
+
+ // <rdar://problem/13687397> Need a way for LTO to get cpu variants (until that info is in bitcode)
+ if ( options.mcpu != NULL )
+ ::lto_codegen_set_cpu(generator, options.mcpu);
+
+ // Compute the preserved symbols
+ CStringToAtom deadllvmAtoms, llvmAtoms;
+ setPreservedSymbols(allAtoms, state, options, deadllvmAtoms, llvmAtoms, generator);
+
+ size_t machOFileLen = 0;
+ const uint8_t* machOFile = NULL;
+
+ // mach-o parsing is done in-memory, but need path for debug notes
+ std::string object_path;
+ if ( options.tmpObjectFilePath != NULL ) {
+ object_path = options.tmpObjectFilePath;
+ // If the path exists and is a directory (for instance if some files
+ // were processed with ThinLTO before), we create the LTO file inside
+ // the directory.
+ struct stat statBuffer;
+ if( stat(object_path.c_str(), &statBuffer) == 0 && S_ISDIR(statBuffer.st_mode) ) {
+ object_path += "/lto.o";
+ }
+ }
+
+ // Codegen Now
+ std::tie(machOFile, machOFileLen) = codegen(options, state, generator, object_path);
+
+ // parse generated mach-o file into a MachOReader
+ ld::relocatable::File* machoFile = parseMachOFile(machOFile, machOFileLen, object_path, options, ld::File::Ordinal::LTOOrdinal());
+
+ // Load the generated MachO file
+ loadMachO(machoFile, options, handler, newAtoms, additionalUndefines, llvmAtoms, deadllvmAtoms);
+
// Remove Atoms from ld if code generator optimized them away
for (CStringToAtom::iterator li = llvmAtoms.begin(), le = llvmAtoms.end(); li != le; ++li) {
// check if setRealAtom() called on this Atom
li->second->setCoalescedAway();
}
}
-
- // notify about file level attributes
- handler.doFile(*machoFile);
-
+
// if final mach-o file has debug info, update original bitcode files to match
- for (std::vector<File*>::iterator it=_s_files.begin(); it != _s_files.end(); ++it) {
- (*it)->setDebugInfo(machoFile->debugInfo(), machoFile->path(),
- machoFile->modificationTime(), machoFile->cpuSubType());
+ for (auto *f : files) {
+ f->setDebugInfo(machoFile->debugInfo(), machoFile->path(), machoFile->modificationTime(), machoFile->cpuSubType());
}
-
+
return true;
}
+// Create the ThinLTO codegenerator
+thinlto_code_gen_t Parser::init_thinlto_codegen(const std::vector<File*>& files,
+ const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ CStringToAtom& deadllvmAtoms,
+ CStringToAtom& llvmAtoms) {
+ const bool logMustPreserve = false;
+
+ thinlto_code_gen_t thingenerator = ::thinlto_create_codegen();
+
+ // Caching control
+ if (options.ltoCachePath && !options.bitcodeBundle) {
+ struct stat statBuffer;
+ if( stat(options.ltoCachePath, &statBuffer) != 0 || !S_ISDIR(statBuffer.st_mode) ) {
+ if ( mkdir(options.ltoCachePath, 0700) !=0 ) {
+ warning("unable to create ThinLTO cache directory: %s", options.ltoCachePath);
+ }
+ }
+ thinlto_codegen_set_cache_dir(thingenerator, options.ltoCachePath);
+ thinlto_codegen_set_cache_pruning_interval(thingenerator, options.ltoPruneInterval);
+ thinlto_codegen_set_cache_entry_expiration(thingenerator, options.ltoPruneAfter);
+ thinlto_codegen_set_final_cache_size_relative_to_available_space(thingenerator, options.ltoMaxCacheSize);
+ }
+
+ // if requested, ask the code generator to save off intermediate bitcode files
+ if ( options.saveTemps ) {
+ std::string tempPath = options.outputFilePath;
+ tempPath += ".thinlto.bcs/";
+ struct stat statBuffer;
+ if( stat(tempPath.c_str(), &statBuffer) != 0 || !S_ISDIR(statBuffer.st_mode) ) {
+ if ( mkdir(tempPath.c_str(), 0700) !=0 ) {
+ warning("unable to create ThinLTO output directory for temporary bitcode files: %s", tempPath.c_str());
+ }
+ }
+ thinlto_codegen_set_savetemps_dir(thingenerator, tempPath.c_str());
+ }
+
+ // Set some codegen options
+ if ( thinlto_codegen_set_pic_model(thingenerator, getCodeModel(options)) )
+ throwf("could not create set codegen model: %s", lto_get_error_message());
+
+ // Expose reachability informations for internalization in LTO
+
+ // The atom graph uses directed edges (references). Collect all references where
+ // originating atom is not part of any LTO Reader. This allows optimizer to optimize an
+ // external (i.e. not originated from same .o file) reference if all originating atoms are also
+ // defined in llvm bitcode file.
+ CStringSet nonLLVMRefs;
+ CStringSet LLVMRefs;
+ for (std::vector<const ld::Atom*>::const_iterator it = allAtoms.begin(); it != allAtoms.end(); ++it) {
+ const ld::Atom* atom = *it;
+ const ld::Atom* target;
+ for (ld::Fixup::iterator fit=atom->fixupsBegin(); fit != atom->fixupsEnd(); ++fit) {
+ switch ( fit->binding ) {
+ case ld::Fixup::bindingDirectlyBound:
+ // that reference a ThinLTO llvm atom
+ target = fit->u.target;
+ if ( target->contentType() == ld::Atom::typeLTOtemporary &&
+ ((lto::File *)target->file())->isThinLTO() &&
+ atom->file() != target->file()
+ ) {
+ if (atom->contentType() != ld::Atom::typeLTOtemporary ||
+ !((lto::File *)atom->file())->isThinLTO())
+ nonLLVMRefs.insert(target->name());
+ else
+ LLVMRefs.insert(target->name());
+ if ( logMustPreserve )
+ fprintf(stderr, "Found a reference from %s -> %s\n", atom->name(), target->name());
+ }
+ break;
+ case ld::Fixup::bindingsIndirectlyBound:
+ target = state.indirectBindingTable[fit->u.bindingIndex];
+ if ( (target != NULL) && (target->contentType() == ld::Atom::typeLTOtemporary) &&
+ ((lto::File *)target->file())->isThinLTO() &&
+ atom->file() != target->file()
+ ) {
+ if (atom->contentType() != ld::Atom::typeLTOtemporary ||
+ !((lto::File *)atom->file())->isThinLTO())
+ nonLLVMRefs.insert(target->name());
+ else
+ LLVMRefs.insert(target->name());
+ if ( logMustPreserve )
+ fprintf(stderr, "Found a reference from %s -> %s\n", atom->name(), target->name());
+ }
+ default:
+ break;
+ }
+ }
+ if (atom->contentType() == ld::Atom::typeLTOtemporary &&
+ ((lto::File *)atom->file())->isThinLTO()) {
+ llvmAtoms[atom->name()] = (Atom*)atom;
+ }
+ }
+ // if entry point is in a llvm bitcode file, it must be preserved by LTO
+ if ( state.entryPoint != NULL ) {
+ if ( state.entryPoint->contentType() == ld::Atom::typeLTOtemporary )
+ nonLLVMRefs.insert(state.entryPoint->name());
+ }
+ for (auto file : files) {
+ for(uint32_t i=0; i < file->_atomArrayCount; ++i) {
+ Atom* llvmAtom = &file->_atomArray[i];
+ if ( llvmAtom->coalescedAway() ) {
+ const char* name = llvmAtom->name();
+ if ( deadllvmAtoms.find(name) == deadllvmAtoms.end() ) {
+ if ( logMustPreserve )
+ fprintf(stderr, "lto_codegen_add_must_preserve_symbol(%s) because linker coalesce away and replace with a mach-o atom\n", name);
+ ::thinlto_codegen_add_must_preserve_symbol(thingenerator, name, strlen(name));
+ deadllvmAtoms[name] = (Atom*)llvmAtom;
+ }
+ }
+ else if ( options.linkerDeadStripping && !llvmAtom->live() ) {
+ const char* name = llvmAtom->name();
+ deadllvmAtoms[name] = (Atom*)llvmAtom;
+ }
+ }
+ }
+
+ // tell code generator about symbols that must be preserved
+ for (CStringToAtom::iterator it = llvmAtoms.begin(); it != llvmAtoms.end(); ++it) {
+ const char* name = it->first;
+ Atom* atom = it->second;
+ // Include llvm Symbol in export list if it meets one of following two conditions
+ // 1 - atom scope is global (and not linkage unit).
+ // 2 - included in nonLLVMRefs set.
+ // If a symbol is not listed in exportList then LTO is free to optimize it away.
+ if ( (atom->scope() == ld::Atom::scopeGlobal) && options.preserveAllGlobals ) {
+ if ( logMustPreserve ) fprintf(stderr, "lto_codegen_add_must_preserve_symbol(%s) because global symbol\n", name);
+ ::thinlto_codegen_add_must_preserve_symbol(thingenerator, name, strlen(name));
+ }
+ else if ( nonLLVMRefs.find(name) != nonLLVMRefs.end() ) {
+ if ( logMustPreserve ) fprintf(stderr, "lto_codegen_add_must_preserve_symbol(%s) because referenced from outside of ThinLTO\n", name);
+ ::thinlto_codegen_add_must_preserve_symbol(thingenerator, name, strlen(name));
+ }
+ else if ( LLVMRefs.find(name) != LLVMRefs.end() ) {
+ if ( logMustPreserve ) fprintf(stderr, "lto_codegen_add_must_preserve_symbol(%s) because referenced from another file\n", name);
+ ::thinlto_codegen_add_cross_referenced_symbol(thingenerator, name, strlen(name));
+ } else {
+ if ( logMustPreserve ) fprintf(stderr, "NOT preserving(%s)\n", name);
+ }
+// FIXME: to be implemented
+// else if ( options.relocatable && hasNonllvmAtoms ) {
+// // <rdar://problem/14334895> ld -r mode but merging in some mach-o files, so need to keep libLTO from optimizing away anything
+// if ( logMustPreserve ) fprintf(stderr, "lto_codegen_add_must_preserve_symbol(%s) because -r mode disable LTO dead stripping\n", name);
+// ::thinlto_codegen_add_must_preserve_symbol(thingenerator, name, strlen(name));
+// }
+ }
+
+ return thingenerator;
+}
+
+// Full LTO processing
+bool Parser::optimizeThinLTO(const std::vector<File*>& files,
+ const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ ld::File::AtomHandler& handler,
+ std::vector<const ld::Atom*>& newAtoms,
+ std::vector<const char*>& additionalUndefines) {
+ const bool logBitcodeFiles = false;
+
+ if (files.empty())
+ return true;
+
+#if LTO_API_VERSION >= 18
+
+ if (::lto_api_version() < 18)
+ throwf("lto: could not use -thinlto because libLTO is too old (version '%d', >=18 is required)", ::lto_api_version());
+
+ // Handle -mllvm options
+ if ( !_s_llvmOptionsProcessed ) {
+ thinlto_debug_options(options.llvmOptions->data(), options.llvmOptions->size());
+ _s_llvmOptionsProcessed = true;
+ }
+
+ // Create the ThinLTO codegenerator
+ CStringToAtom deadllvmAtoms;
+ CStringToAtom llvmAtoms;
+ thinlto_code_gen_t thingenerator = init_thinlto_codegen(files, allAtoms, state, options, deadllvmAtoms, llvmAtoms);
+
+
+ ld::File::Ordinal lastOrdinal;
+ for (auto *f : files) {
+ if ( logBitcodeFiles) fprintf(stderr, "thinlto_codegen_add_module(%s)\n", f->path());
+ f->addToThinGenerator(thingenerator);
+ lastOrdinal = f->ordinal();
+ }
+
+#if LTO_API_VERSION >= 19
+ // In the bitcode bundle case, we first run the generator with codegen disabled
+ // and get the bitcode output. These files are added for later bundling, and a
+ // new codegenerator is setup with these as input, and the optimizer disabled.
+ if (options.bitcodeBundle) {
+ // Bitcode Bundle case
+ thinlto_codegen_disable_codegen(thingenerator, true);
+ // Process the optimizer only
+ thinlto_codegen_process(thingenerator);
+ auto numObjects = thinlto_module_get_num_objects(thingenerator);
+ // Save the codegenerator
+ thinlto_code_gen_t bitcode_generator = thingenerator;
+ // Create a new codegen generator for the codegen part.
+ thingenerator = init_thinlto_codegen(files, allAtoms, state, options, deadllvmAtoms, llvmAtoms);
+ // Disable the optimizer
+ thinlto_codegen_set_codegen_only(thingenerator, true);
+
+ // Save bitcode files for later, and add them to the codegen generator.
+ for (unsigned bufID = 0; bufID < numObjects; ++bufID) {
+ auto machOFile = thinlto_module_get_object(bitcode_generator, bufID);
+ std::string tempMachoPath = options.outputFilePath;
+ tempMachoPath += ".";
+ tempMachoPath += std::to_string(bufID);
+ tempMachoPath += ".thinlto.o.bc";
+ state.ltoBitcodePath.push_back(tempMachoPath);
+ int fd = ::open(tempMachoPath.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
+ if ( fd != -1 ) {
+ ::write(fd, machOFile.Buffer, machOFile.Size);
+ ::close(fd);
+ } else {
+ throwf("unable to write temporary ThinLTO output: %s", tempMachoPath.c_str());
+ }
+
+ // Add the optimized bitcode to the codegen generator now.
+ ::thinlto_codegen_add_module(thingenerator, tempMachoPath.c_str(), (const char *)machOFile.Buffer, machOFile.Size);
+ }
+ }
+
+ if (options.ltoCodegenOnly)
+ // Disable the optimizer
+ thinlto_codegen_set_codegen_only(thingenerator, true);
+#endif
+
+ // run code generator
+ thinlto_codegen_process(thingenerator);
+ auto numObjects = thinlto_module_get_num_objects(thingenerator);
+ if (!numObjects)
+ throwf("could not do ThinLTO codegen (thinlto_codegen_process didn't produce any object): '%s', using libLTO version '%s'", ::lto_get_error_message(), ::lto_get_version());
+
+ // if requested, save off objects files
+ if ( options.saveTemps ) {
+ for (unsigned bufID = 0; bufID < numObjects; ++bufID) {
+ auto machOFile = thinlto_module_get_object(thingenerator, bufID);
+ std::string tempMachoPath = options.outputFilePath;
+ tempMachoPath += ".";
+ tempMachoPath += std::to_string(bufID);
+ tempMachoPath += ".thinlto.o";
+ int fd = ::open(tempMachoPath.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
+ if ( fd != -1 ) {
+ ::write(fd, machOFile.Buffer, machOFile.Size);
+ ::close(fd);
+ } else {
+ warning("unable to write temporary ThinLTO output: %s", tempMachoPath.c_str());
+ }
+ }
+ }
+
+
+ // mach-o parsing is done in-memory, but need path for debug notes
+ std::string macho_dirpath = "/tmp/thinlto.o";
+ if ( options.tmpObjectFilePath != NULL ) {
+ macho_dirpath = options.tmpObjectFilePath;
+ struct stat statBuffer;
+ if( stat(macho_dirpath.c_str(), &statBuffer) != 0 || !S_ISDIR(statBuffer.st_mode) ) {
+ if ( mkdir(macho_dirpath.c_str(), 0700) !=0 ) {
+ warning("unable to create ThinLTO output directory for temporary object files: %s", macho_dirpath.c_str());
+ }
+ }
+ }
+
+ auto ordinal = ld::File::Ordinal::LTOOrdinal().nextFileListOrdinal();
+ for (unsigned bufID = 0; bufID < numObjects; ++bufID) {
+ auto machOFile = thinlto_module_get_object(thingenerator, bufID);
+ if (!machOFile.Size) {
+ warning("Ignoring empty buffer generated by ThinLTO");
+ continue;
+ }
+
+ // mach-o parsing is done in-memory, but need path for debug notes
+ std::string tmp_path = macho_dirpath + "/" + std::to_string(bufID) + ".o";
+
+ // parse generated mach-o file into a MachOReader
+ ld::relocatable::File* machoFile = parseMachOFile((const uint8_t *)machOFile.Buffer, machOFile.Size, tmp_path, options, ordinal);
+ ordinal = ordinal.nextFileListOrdinal();
+
+ // if needed, save temp mach-o file to specific location
+ if ( options.tmpObjectFilePath != NULL ) {
+ int fd = ::open(tmp_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
+ if ( fd != -1) {
+ ::write(fd, (const uint8_t *)machOFile.Buffer, machOFile.Size);
+ ::close(fd);
+ }
+ else {
+ warning("could not write ThinLTO temp file '%s', errno=%d", tmp_path.c_str(), errno);
+ }
+ }
+
+ // Load the generated MachO file
+ loadMachO(machoFile, options, handler, newAtoms, additionalUndefines, llvmAtoms, deadllvmAtoms);
+ }
+
+ // Remove Atoms from ld if code generator optimized them away
+ for (CStringToAtom::iterator li = llvmAtoms.begin(), le = llvmAtoms.end(); li != le; ++li) {
+ // check if setRealAtom() called on this Atom
+ if ( li->second->compiledAtom() == NULL ) {
+ //fprintf(stderr, "llvm optimized away %p %s\n", li->second, li->second->name());
+ li->second->setCoalescedAway();
+ }
+ }
+
+ return true;
+#else // ! (LTO_API_VERSION >= 18)
+ throwf("lto: could not use -thinlto because ld was built against a version of libLTO too old (version '%d', >=18 is required)", LTO_API_VERSION);
+#endif
+}
+
+bool Parser::optimize( const std::vector<const ld::Atom*>& allAtoms,
+ ld::Internal& state,
+ const OptimizeOptions& options,
+ ld::File::AtomHandler& handler,
+ std::vector<const ld::Atom*>& newAtoms,
+ std::vector<const char*>& additionalUndefines)
+{
+
+ // exit quickly if nothing to do
+ if ( _s_files.size() == 0 )
+ return false;
+
+ // print out LTO version string if -v was used
+ if ( options.verbose )
+ fprintf(stderr, "%s\n", ::lto_get_version());
+
+ // <rdar://problem/12379604> The order that files are merged must match command line order
+ std::sort(_s_files.begin(), _s_files.end(), CommandLineOrderFileSorter());
+
+#if LTO_API_VERSION >= 19
+ // If ltoCodegenOnly is set, we don't want to merge any bitcode files and perform FullLTO
+ // we just take the ThinLTO path (optimization will be disabled anyway).
+ if (options.ltoCodegenOnly) {
+ for (auto *file : _s_files) {
+ file->setIsThinLTO(true);
+ }
+ }
+#endif
+
+ std::vector<File *> theLTOFiles;
+ std::vector<File *> theThinLTOFiles;
+ for (auto *file : _s_files) {
+ if (file->isThinLTO()) {
+ theThinLTOFiles.push_back(file);
+ } else {
+ theLTOFiles.push_back(file);
+ }
+ }
+
+ auto result = optimizeThinLTO(theThinLTOFiles, allAtoms, state, options, handler, newAtoms, additionalUndefines) &&
+ optimizeLTO(theLTOFiles, allAtoms, state, options, handler, newAtoms, additionalUndefines);
+
+ // Remove InternalAtoms from ld
+ for (std::vector<File*>::iterator it=_s_files.begin(); it != _s_files.end(); ++it) {
+ (*it)->internalAtom().setCoalescedAway();
+ }
+
+ return result;
+}
+
void Parser::AtomSyncer::doAtom(const ld::Atom& machoAtom)
{
static const bool log = false;
- static const ld::Atom* lastProxiedAtom = NULL;
- static const ld::File* lastProxiedFile = NULL;
// update proxy atoms to point to real atoms and find new atoms
const char* name = machoAtom.name();
- CStringToAtom::iterator pos = _llvmAtoms.find(name);
+ CStringToAtom::const_iterator pos = _llvmAtoms.find(name);
if ( pos != _llvmAtoms.end() ) {
// turn Atom into a proxy for this mach-o atom
pos->second->setCompiledAtom(machoAtom);
- lastProxiedAtom = &machoAtom;
- lastProxiedFile = pos->second->file();
+ _lastProxiedAtom = &machoAtom;
+ _lastProxiedFile = pos->second->file();
if (log) fprintf(stderr, "AtomSyncer, mach-o atom %p synced to lto atom %p (name=%s)\n", &machoAtom, pos->second, machoAtom.name());
}
else {
// an atom of this name was not in the allAtoms list the linker gave us
- if ( _deadllvmAtoms.find(name) != _deadllvmAtoms.end() ) {
+ auto llvmAtom = _deadllvmAtoms.find(name);
+ if ( llvmAtom != _deadllvmAtoms.end() ) {
// this corresponding to an atom that the linker coalesced away or marked not-live
if ( _options.linkerDeadStripping ) {
// llvm seems to want this atom and -dead_strip is enabled, so it will be deleted if not needed, so add back
- Atom* llvmAtom = _deadllvmAtoms[name];
- llvmAtom->setCompiledAtom(machoAtom);
+ llvmAtom->second->setCompiledAtom(machoAtom);
_newAtoms.push_back(&machoAtom);
- if (log) fprintf(stderr, "AtomSyncer, mach-o atom %p matches dead lto atom %p but adding back (name=%s)\n", &machoAtom, llvmAtom, machoAtom.name());
+ if (log) fprintf(stderr, "AtomSyncer, mach-o atom %p matches dead lto atom %p but adding back (name=%s)\n", &machoAtom, llvmAtom->second, machoAtom.name());
}
else {
// Don't pass it back as a new atom
- if (log) fprintf(stderr, "AtomSyncer, mach-o atom %p matches dead lto atom %p (name=%s)\n", &machoAtom, _deadllvmAtoms[name], machoAtom.name());
+ if (log) fprintf(stderr, "AtomSyncer, mach-o atom %p matches dead lto atom %p (name=%s)\n", &machoAtom, llvmAtom->second, machoAtom.name());
}
}
else
// this is something new that lto conjured up, tell ld its new
_newAtoms.push_back(&machoAtom);
// <rdar://problem/15469363> if new static atom in same section as previous non-static atom, assign to same file as previous
- if ( (lastProxiedAtom != NULL) && (lastProxiedAtom->section() == machoAtom.section()) ) {
+ if ( (_lastProxiedAtom != NULL) && (_lastProxiedAtom->section() == machoAtom.section()) ) {
ld::Atom* ma = const_cast<ld::Atom*>(&machoAtom);
- ma->setFile(lastProxiedFile);
+ ma->setFile(_lastProxiedFile);
+ if (log) fprintf(stderr, "AtomSyncer, mach-o atom %s is proxied to %s (path=%s)\n", machoAtom.name(), _lastProxiedAtom->name(), _lastProxiedFile->path());
}
if (log) fprintf(stderr, "AtomSyncer, mach-o atom %p is totally new (name=%s)\n", &machoAtom, machoAtom.name());
}
// llvm symbol references always go through Atom proxy.
{
const char* targetName = fit->u.target->name();
- CStringToAtom::iterator post = _llvmAtoms.find(targetName);
+ CStringToAtom::const_iterator post = _llvmAtoms.find(targetName);
if ( post != _llvmAtoms.end() ) {
const ld::Atom* t = post->second;
if (log) fprintf(stderr, " updating direct reference to %p to be ref to %p: %s\n", fit->u.target, t, targetName);
return Parser::validFile(fileContent, fileLength, architecture, subarch);
}
+//
+// Used by archive reader to see if member defines a Category (for -ObjC semantics)
+//
+bool hasObjCCategory(const uint8_t* fileContent, uint64_t fileLength)
+{
+#if LTO_API_VERSION >= 20
+ // note: if run with older libLTO.dylib that does not implement
+ // lto_module_has_objc_category, the call will return 0 which is "false"
+ return lto_module_has_objc_category(fileContent, fileLength);
+#else
+ return false;
+#endif
+}
+
+
static ld::relocatable::File *parseImpl(
const uint8_t *fileContent, uint64_t fileLength, const char *path,
time_t modTime, ld::File::Ordinal ordinal, cpu_type_t architecture,
extern bool isObjectFile(const uint8_t* fileContent, uint64_t fileLength, cpu_type_t architecture, cpu_subtype_t subarch);
+extern bool hasObjCCategory(const uint8_t* fileContent, uint64_t fileLength);
+
extern ld::relocatable::File* parse(const uint8_t* fileContent, uint64_t fileLength,
const char* path, time_t modTime, ld::File::Ordinal ordinal,
cpu_type_t architecture, cpu_subtype_t subarch, bool logAllFiles,
struct OptimizeOptions {
const char* outputFilePath;
const char* tmpObjectFilePath;
+ const char* ltoCachePath;
+ int ltoPruneInterval;
+ int ltoPruneAfter;
+ unsigned ltoMaxCacheSize;
bool preserveAllGlobals;
bool verbose;
bool saveTemps;
cpu_type_t arch;
const char* mcpu;
Options::Platform platform;
+ uint32_t minOSVersion;
const std::vector<const char*>* llvmOptions;
const std::vector<const char*>* initialUndefines;
};
File(const uint8_t* fileContent, uint64_t fileLength, const char* path,
time_t mTime, ld::File::Ordinal ordinal, bool linkingFlatNamespace,
bool linkingMainExecutable, bool hoistImplicitPublicDylibs,
- Options::Platform platform, uint32_t linkMinOSVersion, bool allowSimToMacOSX,
- bool addVers, bool buildingForSimulator,
+ Options::Platform platform, uint32_t linkMinOSVersion, bool allowWeakImports,
+ bool allowSimToMacOSX, bool addVers, bool buildingForSimulator,
bool logAllFiles, const char* installPath,
bool indirectDylib, bool ignoreMismatchPlatform, bool usingBitcode);
virtual ~File() noexcept {}
private:
using P = typename A::P;
using E = typename A::P::E;
+ using pint_t = typename A::P::uint_t;
void addDyldFastStub();
void buildExportHashTableFromExportInfo(const macho_dyld_info_command<P>* dyldInfo,
void buildExportHashTableFromSymbolTable(const macho_dysymtab_command<P>* dynamicInfo,
const macho_nlist<P>* symbolTable, const char* strings,
const uint8_t* fileContent);
+ void addSymbol(const char* name, bool weakDef = false, bool tlv = false, pint_t address = 0);
static const char* objCInfoSegmentName();
static const char* objCInfoSectionName();
template <typename A>
File<A>::File(const uint8_t* fileContent, uint64_t fileLength, const char* path, time_t mTime,
ld::File::Ordinal ord, bool linkingFlatNamespace, bool linkingMainExecutable,
- bool hoistImplicitPublicDylibs, Options::Platform platform, uint32_t linkMinOSVersion,
+ bool hoistImplicitPublicDylibs, Options::Platform platform, uint32_t linkMinOSVersion, bool allowWeakImports,
bool allowSimToMacOSX, bool addVers, bool buildingForSimulator, bool logAllFiles,
const char* targetInstallPath, bool indirectDylib, bool ignoreMismatchPlatform, bool usingBitcode)
- : Base(strdup(path), mTime, ord, platform, linkMinOSVersion, linkingFlatNamespace,
- hoistImplicitPublicDylibs, allowSimToMacOSX, addVers), _fileLength(fileLength), _linkeditStartOffset(0)
+ : Base(strdup(path), mTime, ord, platform, linkMinOSVersion, allowWeakImports, linkingFlatNamespace,
+ hoistImplicitPublicDylibs, allowSimToMacOSX, addVers), _fileLength(fileLength), _linkeditStartOffset(0)
{
const macho_header<P>* header = (const macho_header<P>*)fileContent;
const uint32_t cmd_count = header->ncmds();
// <rdar://problem/20627554> Don't hoist "public" (in /usr/lib/) dylibs that should not be directly linked
this->_hasPublicInstallName = false;
break;
+ case LC_RPATH:
+ this->_rpaths.push_back(strdup(((macho_rpath_command<P>*)cmd)->path()));
+ break;
case LC_VERSION_MIN_MACOSX:
case LC_VERSION_MIN_IPHONEOS:
case LC_VERSION_MIN_WATCHOS:
}
}
+template <typename A>
+void File<A>::addSymbol(const char* name, bool weakDef, bool tlv, pint_t address)
+{
+ // symbols that start with $ld$ are meta-data to the static linker
+ // <rdar://problem/5182537> need way for ld and dyld to see different exported symbols in a dylib
+ if ( strncmp(name, "$ld$", 4) == 0 ) {
+ // $ld$ <action> $ <condition> $ <symbol-name>
+ const char* symAction = &name[4];
+ const char* symCond = strchr(symAction, '$');
+ if ( symCond != nullptr ) {
+ char curOSVers[16];
+ sprintf(curOSVers, "$os%d.%d$", (this->_linkMinOSVersion >> 16), ((this->_linkMinOSVersion >> 8) & 0xFF));
+ if ( strncmp(symCond, curOSVers, strlen(curOSVers)) == 0 ) {
+ const char* symName = strchr(&symCond[1], '$');
+ if ( symName != nullptr ) {
+ ++symName;
+ if ( strncmp(symAction, "hide$", 5) == 0 ) {
+ if ( this->_s_logHashtable )
+ fprintf(stderr, " adding %s to ignore set for %s\n", symName, this->path());
+ this->_ignoreExports.insert(strdup(symName));
+ return;
+ }
+ else if ( strncmp(symAction, "add$", 4) == 0 ) {
+ this->addSymbol(symName, weakDef);
+ return;
+ }
+ else if ( strncmp(symAction, "weak$", 5) == 0 ) {
+ if ( !this->_allowWeakImports )
+ this->_ignoreExports.insert(strdup(symName));
+ }
+ else if ( strncmp(symAction, "install_name$", 13) == 0 ) {
+ this->_dylibInstallPath = symName;
+ this->_installPathOverride = true;
+ // <rdar://problem/14448206> CoreGraphics redirects to ApplicationServices, but with wrong compat version
+ if ( strcmp(this->_dylibInstallPath, "/System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices") == 0 )
+ this->_dylibCompatibilityVersion = Options::parseVersionNumber32("1.0");
+ return;
+ }
+ else if ( strncmp(symAction, "compatibility_version$", 22) == 0 ) {
+ this->_dylibCompatibilityVersion = Options::parseVersionNumber32(symName);
+ return;
+ }
+ else {
+ warning("bad symbol action: %s in dylib %s", name, this->path());
+ }
+ }
+ }
+ }
+ else {
+ warning("bad symbol condition: %s in dylib %s", name, this->path());
+ }
+ }
+
+ // add symbol as possible export if we are not supposed to ignore it
+ if ( this->_ignoreExports.count(name) == 0 ) {
+ typename Base::AtomAndWeak bucket = { nullptr, weakDef, tlv, address };
+ if ( this->_s_logHashtable )
+ fprintf(stderr, " adding %s to hash table for %s\n", name, this->path());
+ this->_atoms[strdup(name)] = bucket;
+ }
+}
template <>
void File<x86_64>::addDyldFastStub()
{
return new File<A>(fileContent, fileLength, path, mTime, ordinal, opts.flatNamespace(),
opts.linkingMainExecutable(), opts.implicitlyLinkIndirectPublicDylibs(),
- opts.platform(), opts.minOSversion(),
+ opts.platform(), opts.minOSversion(), opts.allowWeakImports(),
opts.allowSimulatorToLinkWithMacOSX(), opts.addVersionLoadCommand(),
opts.targetIOSSimulator(), opts.logAllFiles(), opts.installPath(),
indirectDylib, opts.outputKind() == Options::kPreload, opts.bundleBitcode());
}
#endif
+
//
// used by linker is error messages to describe mismatched files
//
_minOSVersion(0),
_platform(0),
_canScatterAtoms(false),
- _srcKind(kSourceUnknown) {}
+ _objcHasCategoryClassPropertiesField(false),
+ _srcKind(kSourceUnknown) { }
virtual ~File();
// overrides of ld::File
// overrides of ld::relocatable::File
virtual ObjcConstraint objCConstraint() const { return _objConstraint; }
+ virtual bool objcHasCategoryClassPropertiesField() const
+ { return _objcHasCategoryClassPropertiesField; }
virtual uint32_t cpuSubType() const { return _cpuSubType; }
virtual DebugInfoKind debugInfo() const { return _debugInfoKind; }
virtual const std::vector<ld::relocatable::File::Stab>* stabs() const { return &_stabs; }
uint32_t _minOSVersion;
uint32_t _platform;
bool _canScatterAtoms;
+ bool _objcHasCategoryClassPropertiesField;
std::vector<std::vector<const char*> > _linkerOptions;
std::unique_ptr<ld::Bitcode> _bitcode;
SourceKind _srcKind;
TLVDefsSection(Parser<A>& parser, File<A>& f, const macho_section<typename A::P>* s) :
SymboledSection<A>(parser, f, s) { }
+ typedef typename A::P::uint_t pint_t;
+
+ virtual ld::Atom::Alignment alignmentForAddress(pint_t addr) { return ld::Atom::Alignment(log2(sizeof(pint_t))); }
+
private:
};
typedef typename A::P::uint_t pint_t;
typedef typename A::P P;
+ virtual void makeFixups(class Parser<A>& parser, const struct Parser<A>::CFI_CU_InfoArrays&);
virtual ld::Atom::ContentType contentType() { return ld::Atom::typeTLVPointer; }
virtual ld::Atom::Alignment alignmentForAddress(pint_t addr) { return ld::Atom::Alignment(log2(sizeof(pint_t))); }
virtual const char* unlabeledAtomName(Parser<A>&, pint_t) { return "tlv_lazy_ptr"; }
}
#endif
+
template <typename A>
void Atom<A>::verifyAlignment(const macho_section<P>&) const
{
}
#endif
+
template <typename A>
bool Parser<A>::hasObjC2Categories(const uint8_t* fileContent)
{
// #define OBJC_IMAGE_SUPPORTS_GC 2
// #define OBJC_IMAGE_GC_ONLY 4
// #define OBJC_IMAGE_IS_SIMULATED 32
+ // #define OBJC_IMAGE_HAS_CATEGORY_CLASS_PROPERTIES 64
//
const uint32_t* contents = (uint32_t*)(_file->fileContent()+sect->offset());
if ( (sect->size() >= 8) && (contents[0] == 0) ) {
else
_file->_objConstraint = ld::File::objcConstraintRetainRelease;
_file->_swiftVersion = ((flags >> 8) & 0xFF);
+ _file->_objcHasCategoryClassPropertiesField = (flags & 64);
if ( sect->size() > 8 ) {
warning("section %s/%s has unexpectedly large size %llu in %s",
sect->segname(), Section<A>::makeSectionName(sect), sect->size(), _file->path());
alignP2 = 63 - (uint8_t)__builtin_clzll(size);
if ( size != (1ULL << alignP2) )
++alignP2;
+ // <rdar://problem/24871389> limit default alignment of large commons
+ if ( alignP2 > parser.maxDefaultCommonAlignment() )
+ alignP2 = parser.maxDefaultCommonAlignment();
}
- // limit alignment of extremely large commons to 2^15 bytes (8-page)
- if ( alignP2 > parser.maxDefaultCommonAlignment() )
- alignP2 = parser.maxDefaultCommonAlignment();
Atom<A>* allocatedSpace = (Atom<A>*)p;
new (allocatedSpace) Atom<A>(*this, parser.nameFromSymbol(sym), (pint_t)ULLONG_MAX, size,
ld::Atom::definitionTentative, ld::Atom::combineByName,
break;
case S_LAZY_SYMBOL_POINTERS:
case S_NON_LAZY_SYMBOL_POINTERS:
+ case S_THREAD_LOCAL_VARIABLE_POINTERS:
elementSize = sizeof(pint_t);
break;
default:
- throw "section does not use inirect symbol table";
+ throw "section does not use indirect symbol table";
}
uint32_t indexInSection = (addr - sect->addr()) / elementSize;
uint32_t indexIntoIndirectTable = sect->reserved1() + indexInSection;
return true;
}
+
template <typename A>
bool CFISection<A>::needsRelocating()
{
template <> bool CFISection<arm>::bigEndian() { return false; }
template <> bool CFISection<arm64>::bigEndian() { return false; }
-
template <>
void CFISection<x86_64>::addCiePersonalityFixups(class Parser<x86_64>& parser, const CFI_Atom_Info* cieInfo)
{
}
#endif
+
template <>
void CFISection<arm>::addCiePersonalityFixups(class Parser<arm>& parser, const CFI_Atom_Info* cieInfo)
{
}
#endif
+
#if SUPPORT_ARCH_arm_any
template <>
const char* CUSection<arm>::personalityName(class Parser<arm>& parser, const macho_relocation_info<arm::P>* reloc)
}
#endif
+
template <typename A>
int CUSection<A>::infoSorter(const void* l, const void* r)
{
return ld::Atom::symbolTableInWithRandomAutoStripLabel;
}
+
template <typename A>
ld::Atom::SymbolTableInclusion ImplicitSizeSection<A>::symbolTableInclusion()
{
return ld::Atom::combineByNameAndReferences;
}
+template <>
+void TLVPointerSection<arm>::makeFixups(class Parser<arm>& parser, const struct Parser<arm>::CFI_CU_InfoArrays&)
+{
+ // add references for each thread local pointer atom based on indirect symbol table
+ const macho_section<P>* sect = this->machoSection();
+ const pint_t endAddr = sect->addr() + sect->size();
+ for (pint_t addr = sect->addr(); addr < endAddr; addr += sizeof(pint_t)) {
+ typename Parser<arm>::SourceLocation src;
+ typename Parser<arm>::TargetDesc target;
+ src.atom = this->findAtomByAddress(addr);
+ src.offsetInAtom = 0;
+ uint32_t symIndex = parser.symbolIndexFromIndirectSectionAddress(addr, sect);
+ target.atom = NULL;
+ target.name = NULL;
+ target.weakImport = false;
+ target.addend = 0;
+ if ( symIndex == INDIRECT_SYMBOL_LOCAL ) {
+ throwf("unexpected INDIRECT_SYMBOL_LOCAL in section %s", this->sectionName());
+ }
+ else {
+ const macho_nlist<P>& sym = parser.symbolFromIndex(symIndex);
+ // use direct reference for local symbols
+ if ( ((sym.n_type() & N_TYPE) == N_SECT) && ((sym.n_type() & N_EXT) == 0) ) {
+ throwf("unexpected pointer to local symbol in section %s", this->sectionName());
+ }
+ else {
+ target.name = parser.nameFromSymbol(sym);
+ target.weakImport = parser.weakImportFromSymbol(sym);
+ assert(src.atom->combine() == ld::Atom::combineByNameAndReferences);
+ }
+ }
+ parser.addFixups(src, ld::Fixup::kindStoreLittleEndian32, target);
+ }
+}
+
+template <typename A>
+void TLVPointerSection<A>::makeFixups(class Parser<A>& parser, const struct Parser<A>::CFI_CU_InfoArrays&)
+{
+ assert(0 && "should not have thread-local-pointer sections in .o files");
+}
+
template <typename A>
const char* TLVPointerSection<A>::targetName(const class Atom<A>* atom, const ld::IndirectBindingTable& ind, bool* isStatic)
}
#endif
+
template <typename A>
bool ObjC1ClassSection<A>::addRelocFixup(class Parser<A>& parser, const macho_relocation_info<P>* reloc)
{
}
#endif
+
template <typename A>
void Section<A>::addLOH(class Parser<A>& parser, int kind, int count, const uint64_t addrs[]) {
#include <sys/param.h>
#include <sys/mman.h>
-
+#include <tapi/tapi.h>
#include <vector>
#include "Architectures.hpp"
#include "generic_dylib_file.hpp"
#include "textstub_dylib_file.hpp"
-namespace {
-
-///
-/// A token is a light-weight reference to the content of an nmap'ed file. It
-/// doesn't own the data and it doesn't make a copy of it. The referenced data
-/// is only valid as long as the file is mapped in.
-///
-class Token {
- const char* _p;
- size_t _size;
-
- int compareMemory(const char* lhs, const char* rhs, size_t size) const {
- if (size == 0)
- return 0;
- return ::memcmp(lhs, rhs, size);
- }
-
-public:
- Token() : _p(nullptr), _size(0) {}
-
- Token(const char* p) : _p(p), _size(0) {
- if (p)
- _size = ::strlen(p);
- }
-
- Token(const char* p, size_t s) : _p(p), _size(s) {}
-
- const char* data() const { return _p; }
-
- size_t size() const { return _size; }
-
- std::string str() const { return std::string(_p, _size); }
-
- bool empty() const { return _size == 0; }
-
- bool operator==(Token other) const {
- if (_size != other._size)
- return false;
- return compareMemory(_p, other._p, _size) == 0;
- }
-
- bool operator!=(Token other) const {
- return !(*this == other);
- }
-};
-
-///
-/// Simple text-based dynamic library file tokenizer.
-///
-class Tokenizer {
- const char* _start;
- const char* _current;
- const char* _end;
- Token _currentToken;
-
- void fetchNextToken();
- void scanToNextToken();
- void skip(unsigned distance) {
- _current += distance;
- assert(_current <= _end && "Skipped past the end");
- }
-
- const char* skipLineBreak(const char* pos) const;
- bool isDelimiter(const char* pos) const;
-
-public:
- Tokenizer(const char* data, uint64_t size) : _start(data), _current(data), _end(data + size) {}
-
- void reset() {
- _current = _start;
- fetchNextToken();
- }
-
- Token peek() { return _currentToken; }
- Token next() {
- Token token = peek();
- fetchNextToken();
- return token;
- }
-};
-
-const char* Tokenizer::skipLineBreak(const char* pos) const
-{
- if ( pos == _end )
- return pos;
-
- // Carriage return.
- if ( *pos == 0x0D ) {
- // line feed.
- if ( pos + 1 != _end && *(pos + 1) == 0x0A)
- return pos + 2;
- return pos + 1;
- }
-
- // line feed.
- if ( *pos == 0x0A )
- return pos + 1;
-
- return pos;
-}
-
-void Tokenizer::scanToNextToken() {
- while (true) {
- while ( isDelimiter(_current) )
- skip(1);
-
- const char* i = skipLineBreak(_current);
- if ( i == _current )
- break;
-
- _current = i;
- }
-}
-
-
-bool Tokenizer::isDelimiter(const char* pos) const {
- if ( pos == _end )
- return false;
- if ( *pos == ' ' || *pos == '\t' || *pos == '\r' || *pos == '\n' || *pos == ',' || *pos == ':' || *pos == '\'' || *pos == '\"' )
- return true;
- return false;
-}
-
-void Tokenizer::fetchNextToken() {
- scanToNextToken();
-
- if (_current == _end) {
- _currentToken = Token();
- return;
- }
-
- auto start = _current;
- while ( !isDelimiter(_current) ) {
- ++_current;
- }
-
- _currentToken = Token(start, _current - start);
-}
-
-///
-/// Representation of a parsed text-based dynamic library file.
-///
-struct DynamicLibrary {
- Token _installName;
- uint32_t _currentVersion;
- uint32_t _compatibilityVersion;
- uint8_t _swiftVersion;
- ld::File::ObjcConstraint _objcConstraint;
- Options::Platform _platform;
- std::vector<Token> _allowedClients;
- std::vector<Token> _reexportedLibraries;
- std::vector<Token> _symbols;
- std::vector<Token> _classes;
- std::vector<Token> _ivars;
- std::vector<Token> _weakDefSymbols;
- std::vector<Token> _tlvSymbols;
-
- DynamicLibrary() : _currentVersion(0x10000), _compatibilityVersion(0x10000), _swiftVersion(0),
- _objcConstraint(ld::File::objcConstraintNone) {}
-};
-
-///
-/// A simple text-based dynamic library file parser.
-///
-class TBDFile {
- Tokenizer _tokenizer;
-
- Token peek() { return _tokenizer.peek(); }
- Token next() { return _tokenizer.next(); }
-
- void expectToken(Token str) {
- Token token = next();
- if (token != str)
- throwf("unexpected token: %s", token.str().c_str());
- }
-
- bool hasOptionalToken(Token str) {
- auto token = peek();
- if ( token == str ) {
- next();
- return true;
- }
- return false;
- }
-
-
- void parseFlowSequence(std::function<void (Token)> func) {
- expectToken("[");
-
- while ( true ) {
- auto token = peek();
- if ( token == "]" )
- break;
-
- token = next();
- func(token);
- }
-
- expectToken("]");
- }
-
- void parseAllowedClients(DynamicLibrary& lib) {
- if ( !hasOptionalToken("allowed-clients") )
- return;
- parseFlowSequence([&](Token name) {
- lib._allowedClients.emplace_back(name);
- });
- }
-
- void parseReexportedDylibs(DynamicLibrary& lib) {
- if ( !hasOptionalToken("re-exports") )
- return;
- parseFlowSequence([&](Token name) {
- lib._reexportedLibraries.emplace_back(name);
- });
- }
-
- void parseSymbols(DynamicLibrary& lib) {
- if ( hasOptionalToken("symbols") ) {
- parseFlowSequence([&](Token name) {
- lib._symbols.emplace_back(name);
- });
- }
-
- if ( hasOptionalToken("objc-classes") ) {
- parseFlowSequence([&](Token name) {
- lib._classes.emplace_back(name);
- });
- }
-
- if ( hasOptionalToken("objc-ivars") ) {
- parseFlowSequence([&](Token name) {
- lib._ivars.emplace_back(name);
- });
- }
-
- if ( hasOptionalToken("weak-def-symbols") ) {
- parseFlowSequence([&](Token name) {
- lib._weakDefSymbols.emplace_back(name);
- });
- }
-
- if ( hasOptionalToken("thread-local-symbols") ) {
- parseFlowSequence([&](Token name) {
- lib._tlvSymbols.emplace_back(name);
- });
- }
- }
-
- std::vector<std::string> parseArchFlowSequence() {
- std::vector<std::string> availabledArchitectures;
- expectToken("archs");
- parseFlowSequence([&](Token name) {
- availabledArchitectures.emplace_back(name.str());
- });
- return availabledArchitectures;
- }
-
- bool parseArchFlowSequence(std::string &selectedArchName) {
- auto availabledArchitectures = parseArchFlowSequence();
-
- for (const auto &archName : availabledArchitectures) {
- if (archName == selectedArchName)
- return true;
- }
-
- return false;
- }
-
- void parsePlatform(DynamicLibrary& lib) {
- expectToken("platform");
-
- auto token = next();
- if (token == "macosx")
- lib._platform = Options::kPlatformOSX;
- else if (token == "ios")
- lib._platform = Options::kPlatformiOS;
- else if (token == "watchos")
- lib._platform = Options::kPlatformWatchOS;
-#if SUPPORT_APPLE_TV
- else if (token == "tvos")
- lib._platform = Options::kPlatform_tvOS;
-#endif
- else
- lib._platform = Options::kPlatformUnknown;
- }
-
- void parseInstallName(DynamicLibrary& lib) {
- expectToken("install-name");
-
- lib._installName = next();
- if ( lib._installName.empty() )
- throwf("no install name specified");
- }
-
- uint32_t parseVersionNumber32(Token token) {
- if ( token.size() >= 128 )
- throwf("malformed version number");
-
- // Make a null-terminated string.
- char buffer[128];
- ::memcpy(buffer, token.data(), token.size());
- buffer[token.size()] = '\0';
-
- return Options::parseVersionNumber32(buffer);
- }
-
- void parseCurrentVersion(DynamicLibrary& lib) {
- if ( !hasOptionalToken("current-version") )
- return;
- lib._currentVersion = parseVersionNumber32(next());
- }
-
- void parseCompatibilityVersion(DynamicLibrary& lib) {
- if ( !hasOptionalToken("compatibility-version") )
- return;
- lib._compatibilityVersion = parseVersionNumber32(next());
- }
-
- void parseSwiftVersion(DynamicLibrary& lib) {
- if ( !hasOptionalToken("swift-version") )
- return;
- auto token = next();
- if ( token == "1.0" )
- lib._swiftVersion = 1;
- else if ( token == "1.1" )
- lib._swiftVersion = 2;
- else if ( token == "2.0" )
- lib._swiftVersion = 3;
- else
- throwf("unsupported Swift ABI version: %s", token.str().c_str());
- }
-
- void parseObjCConstraint(DynamicLibrary& lib) {
- if ( !hasOptionalToken("objc-constraint") )
- return;
- auto token = next();
- if ( token == "none" )
- lib._objcConstraint = ld::File::objcConstraintNone;
- else if ( token == "retain_release" )
- lib._objcConstraint = ld::File::objcConstraintRetainRelease;
- else if ( token == "retain_release_for_simulator" )
- lib._objcConstraint = ld::File::objcConstraintRetainReleaseForSimulator;
- else if ( token == "retain_release_or_gc" )
- lib._objcConstraint = ld::File::objcConstraintRetainReleaseOrGC;
- else if ( token == "gc" )
- lib._objcConstraint = ld::File::objcConstraintGC;
- else
- throwf("unexpected token: %s", token.str().c_str());
- }
- void parseExportsBlock(DynamicLibrary& lib, std::string &selectedArchName) {
- if ( !hasOptionalToken("exports") )
- return;
-
- if ( !hasOptionalToken("-") )
- return;
-
- while ( true ) {
- if ( !parseArchFlowSequence(selectedArchName) ) {
- Token token;
- while ( true ) {
- token = peek();
- if ( token == "archs" || token == "..." || token.empty() )
- break;
- next();
- }
- if (token == "..." || token.empty() )
- break;
-
- continue;
- }
-
- parseAllowedClients(lib);
- parseReexportedDylibs(lib);
- parseSymbols(lib);
- if ( !hasOptionalToken("-") )
- break;
- }
- }
-
- std::vector<std::string> getCompatibleArchList(std::string &requestedArchName) {
- if (requestedArchName == "i386")
- return {"i386"};
- else if (requestedArchName == "x86_64" || requestedArchName == "x86_64h")
- return {"x86_64", "x86_64h"};
- else if (requestedArchName == "armv7" || requestedArchName == "armv7s")
- return {"armv7", "armv7s"};
- else if (requestedArchName == "armv7k")
- return {"armv7k"};
- else if (requestedArchName == "arm64")
- return {"arm64"};
- else
- return {};
- }
-
- std::string parseAndSelectArchitecture(std::string &requestedArchName) {
- auto availabledArchitectures = parseArchFlowSequence();
-
- // First try to find an exact match (cpu type and sub-cpu type).
- if (std::find(availabledArchitectures.begin(), availabledArchitectures.end(), requestedArchName)
- != availabledArchitectures.end())
- return requestedArchName;
-
- // If there is no exact match, then try to find an ABI compatible slice.
- auto compatibleArchitectures = getCompatibleArchList(requestedArchName);
- std::vector<std::string> result;
- std::sort(availabledArchitectures.begin(), availabledArchitectures.end());
- std::sort(compatibleArchitectures.begin(), compatibleArchitectures.end());
- std::set_intersection(availabledArchitectures.begin(), availabledArchitectures.end(),
- compatibleArchitectures.begin(), compatibleArchitectures.end(),
- std::back_inserter(result));
-
- if (result.empty())
- return std::string();
- else
- return result.front();
- }
-
- void parseDocument(DynamicLibrary& lib, std::string &requestedArchName) {
- auto selectedArchName = parseAndSelectArchitecture(requestedArchName);
- if (selectedArchName.empty())
- throwf("invalid arch");
-
- parsePlatform(lib);
- parseInstallName(lib);
- parseCurrentVersion(lib);
- parseCompatibilityVersion(lib);
- parseSwiftVersion(lib);
- parseObjCConstraint(lib);
- parseExportsBlock(lib, selectedArchName);
- }
-
-public:
- TBDFile(const char* data, uint64_t size) : _tokenizer(data, size) {}
-
- DynamicLibrary parseFileForArch(std::string requestedArchName) {
- _tokenizer.reset();
- DynamicLibrary lib;
- expectToken("---");
- parseDocument(lib, requestedArchName);
- expectToken("...");
- return lib;
- }
-
- bool validForArch(std::string requestedArchName) {
- _tokenizer.reset();
- auto token = next();
- if ( token != "---" )
- return false;
- return !parseAndSelectArchitecture(requestedArchName).empty();
- }
-
- void dumpTokens() {
- _tokenizer.reset();
- Token token;
- do {
- token = next();
- printf("token: %s\n", token.str().c_str());
- } while ( !token.empty() );
- }
-};
-
-} // end anonymous namespace
namespace textstub {
namespace dylib {
using Base = generic::dylib::File<A>;
public:
- static bool validFile(const uint8_t* fileContent, bool executableOrDylib);
- File(const uint8_t* fileContent, uint64_t fileLength, const char* path,
+ File(const char* path, const uint8_t* fileContent, uint64_t fileLength,
time_t mTime, ld::File::Ordinal ordinal, bool linkingFlatNamespace,
- bool hoistImplicitPublicDylibs, Options::Platform platform,
- cpu_type_t cpuType, const char* archName, uint32_t linkMinOSVersion,
+ bool linkingMainExecutable, bool hoistImplicitPublicDylibs,
+ Options::Platform platform, uint32_t linkMinOSVersion, bool allowWeakImports,
+ cpu_type_t cpuType, cpu_subtype_t cpuSubType, bool enforceDylibSubtypesMatch,
bool allowSimToMacOSX, bool addVers, bool buildingForSimulator,
bool logAllFiles, const char* installPath, bool indirectDylib);
virtual ~File() noexcept {}
private:
- void buildExportHashTable(const DynamicLibrary &lib);
-
- cpu_type_t _cpuType;
+ void buildExportHashTable(const tapi::LinkerInterfaceFile* file);
};
+static ld::File::ObjcConstraint mapObjCConstraint(tapi::ObjCConstraint constraint) {
+ switch (constraint) {
+ case tapi::ObjCConstraint::None:
+ return ld::File::objcConstraintNone;
+ case tapi::ObjCConstraint::Retain_Release:
+ return ld::File::objcConstraintRetainRelease;
+ case tapi::ObjCConstraint::Retain_Release_For_Simulator:
+ return ld::File::objcConstraintRetainReleaseForSimulator;
+ case tapi::ObjCConstraint::Retain_Release_Or_GC:
+ return ld::File::objcConstraintRetainReleaseOrGC;
+ case tapi::ObjCConstraint::GC:
+ return ld::File::objcConstraintGC;
+ }
+
+ return ld::File::objcConstraintNone;
+}
+
+static Options::Platform mapPlatform(tapi::Platform platform) {
+ switch (platform) {
+ case tapi::Platform::Unknown:
+ return Options::kPlatformUnknown;
+ case tapi::Platform::OSX:
+ return Options::kPlatformOSX;
+ case tapi::Platform::iOS:
+ return Options::kPlatformiOS;
+ case tapi::Platform::watchOS:
+ return Options::kPlatformWatchOS;
+ case tapi::Platform::tvOS:
+ return Options::kPlatform_tvOS;
+ }
+
+ return Options::kPlatformUnknown;
+}
+
template <typename A>
-File<A>::File(const uint8_t* fileContent, uint64_t fileLength, const char* path, time_t mTime,
- ld::File::Ordinal ord, bool linkingFlatNamespace, bool hoistImplicitPublicDylibs,
- Options::Platform platform, cpu_type_t cpuType, const char* archName,
- uint32_t linkMinOSVersion, bool allowSimToMacOSX, bool addVers,
+ File<A>::File(const char* path, const uint8_t* fileContent, uint64_t fileLength,
+ time_t mTime, ld::File::Ordinal ord, bool linkingFlatNamespace,
+ bool linkingMainExecutable, bool hoistImplicitPublicDylibs, Options::Platform platform,
+ uint32_t linkMinOSVersion, bool allowWeakImports, cpu_type_t cpuType, cpu_subtype_t cpuSubType,
+ bool enforceDylibSubtypesMatch, bool allowSimToMacOSX, bool addVers,
bool buildingForSimulator, bool logAllFiles, const char* targetInstallPath,
bool indirectDylib)
- : Base(strdup(path), mTime, ord, platform, linkMinOSVersion, linkingFlatNamespace,
- hoistImplicitPublicDylibs, allowSimToMacOSX, addVers),
- _cpuType(cpuType)
+ : Base(strdup(path), mTime, ord, platform, linkMinOSVersion, allowWeakImports, linkingFlatNamespace,
+ hoistImplicitPublicDylibs, allowSimToMacOSX, addVers)
{
- this->_bitcode = std::unique_ptr<ld::Bitcode>(new ld::Bitcode(nullptr, 0));
- // Text stubs are implicit app extension safe.
- this->_appExtensionSafe = true;
+ auto matchingType = enforceDylibSubtypesMatch ?
+ tapi::CpuSubTypeMatching::Exact : tapi::CpuSubTypeMatching::ABI_Compatible;
+
+ std::string errorMessage;
+ auto file = std::unique_ptr<tapi::LinkerInterfaceFile>(
+ tapi::LinkerInterfaceFile::create(path, fileContent, fileLength, cpuType,
+ cpuSubType, matchingType,
+ tapi::PackedVersion32(linkMinOSVersion), errorMessage));
+
+ if (file == nullptr)
+ throw strdup(errorMessage.c_str());
+
+ // unmap file - it is no longer needed.
+ munmap((caddr_t)fileContent, fileLength);
// write out path for -t option
if ( logAllFiles )
printf("%s\n", path);
- TBDFile stub((const char*)fileContent, fileLength);
- auto lib = stub.parseFileForArch(archName);
-
- this->_noRexports = lib._reexportedLibraries.empty();
- this->_hasWeakExports = !lib._weakDefSymbols.empty();
- this->_dylibInstallPath = strdup(lib._installName.str().c_str());
- this->_dylibCurrentVersion = lib._currentVersion;
- this->_dylibCompatibilityVersion = lib._compatibilityVersion;
- this->_swiftVersion = lib._swiftVersion;
- this->_objcConstraint = lib._objcConstraint;
- this->_hasPublicInstallName = this->isPublicLocation(this->_dylibInstallPath);
+ this->_bitcode = std::unique_ptr<ld::Bitcode>(new ld::Bitcode(nullptr, 0));
+ this->_noRexports = !file->hasReexportedLibraries();
+ this->_hasWeakExports = file->hasWeakDefinedExports();
+ this->_dylibInstallPath = strdup(file->getInstallName().c_str());
+ this->_installPathOverride = file->isInstallNameVersionSpecific();
+ this->_dylibCurrentVersion = file->getCurrentVersion();
+ this->_dylibCompatibilityVersion = file->getCompatibilityVersion();
+ this->_swiftVersion = file->getSwiftVersion();
+ this->_objcConstraint = mapObjCConstraint(file->getObjCConstraint());
+ this->_parentUmbrella = file->getParentFrameworkName().empty() ? nullptr : strdup(file->getParentFrameworkName().c_str());
+ this->_appExtensionSafe = file->isApplicationExtensionSafe();
// if framework, capture framework name
const char* lastSlash = strrchr(this->_dylibInstallPath, '/');
this->_frameworkName = leafName;
}
- // TEMPORARY HACK BEGIN: Support ancient re-export command LC_SUB_FRAMEWORK.
- // <rdar://problem/23614899> [TAPI] Support LC_SUB_FRAMEWORK as re-export indicator.
- auto installName = std::string(this->_dylibInstallPath);
-
- // All sub-frameworks of ApplicationServices use LC_SUB_FRAMEWORK.
- if (installName.find("/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/") == 0 &&
- installName.find(".dylib") == std::string::npos) {
- this->_parentUmbrella = "ApplicationServices";
- } else if (installName.find("/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/") == 0) {
- this->_parentUmbrella = "Carbon";
- } else if (installName.find("/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/") == 0 &&
- installName.find(".dylib") == std::string::npos) {
- this->_parentUmbrella = "CoreServices";
- } else if (installName.find("/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLinearAlgebra.dylib") == 0 ||
- installName.find("/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libQuadrature.dylib") == 0 ||
- installName.find("System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparseBLAS.dylib") == 0) {
- this->_parentUmbrella = "vecLib";
- } else if (installName.find("/System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore") == 0) {
- this->_parentUmbrella = "WebKit";
- } else if (installName.find("/usr/lib/system/") == 0 &&
- installName != "/usr/lib/system/libkxld.dylib") {
- this->_parentUmbrella = "System";
- }
- // TEMPORARY HACK END
-
- for (auto &client : lib._allowedClients) {
- if ((this->_parentUmbrella != nullptr) && (client.str() != this->_parentUmbrella))
- this->_allowableClients.push_back(strdup(client.str().c_str()));
- }
+ for (auto &client : file->allowableClients())
+ this->_allowableClients.push_back(strdup(client.c_str()));
// <rdar://problem/20659505> [TAPI] Don't hoist "public" (in /usr/lib/) dylibs that should not be directly linked
- if ( !this->_allowableClients.empty() )
- this->_hasPublicInstallName = false;
+ this->_hasPublicInstallName = file->hasAllowableClients() ? false : this->isPublicLocation(file->getInstallName().c_str());
+
+ for (const auto &client : file->allowableClients())
+ this->_allowableClients.emplace_back(strdup(client.c_str()));
- if ( (lib._platform != platform) && (platform != Options::kPlatformUnknown) ) {
+ auto dylibPlatform = mapPlatform(file->getPlatform());
+ if ( (dylibPlatform != platform) && (platform != Options::kPlatformUnknown) ) {
this->_wrongOS = true;
if ( this->_addVersionLoadCommand && !indirectDylib ) {
if ( buildingForSimulator ) {
if ( !this->_allowSimToMacOSXLinking )
throwf("building for %s simulator, but linking against dylib built for %s (%s).",
- Options::platformName(platform), Options::platformName(lib._platform), path);
+ Options::platformName(platform), Options::platformName(dylibPlatform), path);
} else {
throwf("building for %s, but linking against dylib built for %s (%s).",
- Options::platformName(platform), Options::platformName(lib._platform), path);
+ Options::platformName(platform), Options::platformName(dylibPlatform), path);
}
}
}
- this->_dependentDylibs.reserve(lib._reexportedLibraries.size());
- for ( const auto& reexport : lib._reexportedLibraries ) {
- const char *path = strdup(reexport.str().c_str());
+ for (const auto& reexport : file->reexportedLibraries()) {
+ const char *path = strdup(reexport.c_str());
if ( (targetInstallPath == nullptr) || (strcmp(targetInstallPath, path) != 0) )
this->_dependentDylibs.emplace_back(path, true);
}
- // build hash table
- buildExportHashTable(lib);
+ for (const auto& symbol : file->ignoreExports())
+ this->_ignoreExports.insert(strdup(symbol.c_str()));
- munmap((caddr_t)fileContent, fileLength);
+ // if linking flat and this is a flat dylib, create one atom that references all imported symbols.
+ if ( linkingFlatNamespace && linkingMainExecutable && (file->hasTwoLevelNamespace() == false) ) {
+ std::vector<const char*> importNames;
+ importNames.reserve(file->undefineds().size());
+ // We do not need to strdup the name, because that will be done by the
+ // ImportAtom constructor.
+ for (const auto &sym : file->undefineds())
+ importNames.emplace_back(sym.getName().c_str());
+ this->_importAtom = new generic::dylib::ImportAtom<A>(*this, importNames);
+ }
+
+ // build hash table
+ buildExportHashTable(file.get());
}
template <typename A>
-void File<A>::buildExportHashTable(const DynamicLibrary& lib) {
+void File<A>::buildExportHashTable(const tapi::LinkerInterfaceFile* file) {
if (this->_s_logHashtable )
fprintf(stderr, "ld: building hashtable from text-stub info in %s\n", this->path());
- for (auto &sym : lib._symbols)
- this->addSymbol(sym.str().c_str());
+ for (const auto &sym : file->exports()) {
+ const char* name = sym.getName().c_str();
+ bool weakDef = sym.isWeakDefined();
+ bool tlv = sym.isThreadLocalValue();
-#if SUPPORT_ARCH_i386
- if (this->_platform == Options::kPlatformOSX && _cpuType == CPU_TYPE_I386) {
- for (auto &sym : lib._classes)
- this->addSymbol((".objc_class_name" + sym.str()).c_str());
- } else {
- for (auto &sym : lib._classes) {
- this->addSymbol(("_OBJC_CLASS_$" + sym.str()).c_str());
- this->addSymbol(("_OBJC_METACLASS_$" + sym.str()).c_str());
- }
+ typename Base::AtomAndWeak bucket = { nullptr, weakDef, tlv, 0 };
+ if ( this->_s_logHashtable )
+ fprintf(stderr, " adding %s to hash table for %s\n", name, this->path());
+ this->_atoms[strdup(name)] = bucket;
}
-#else
- for (auto &sym : lib._classes) {
- this->addSymbol(("_OBJC_CLASS_$" + sym.str()).c_str());
- this->addSymbol(("_OBJC_METACLASS_$" + sym.str()).c_str());
- }
-#endif
-
- for (auto &sym : lib._ivars)
- this->addSymbol(("_OBJC_IVAR_$" + sym.str()).c_str());
-
- for (auto &sym : lib._weakDefSymbols)
- this->addSymbol(sym.str().c_str(), /*weak=*/true);
-
- for (auto &sym : lib._tlvSymbols)
- this->addSymbol(sym.str().c_str(), /*weak=*/false, /*tlv=*/true);
}
template <typename A>
public:
using P = typename A::P;
- static bool validFile(const uint8_t* fileContent, uint64_t fileLength,
- const std::string &path, const char* archName);
- static ld::dylib::File* parse(const uint8_t* fileContent, uint64_t fileLength, const char* path,
- time_t mTime, ld::File::Ordinal ordinal, const Options& opts,
+ static ld::dylib::File* parse(const char* path, const uint8_t* fileContent,
+ uint64_t fileLength, time_t mTime,
+ ld::File::Ordinal ordinal, const Options& opts,
bool indirectDylib)
{
- return new File<A>(fileContent, fileLength, path, mTime, ordinal,
+ return new File<A>(path, fileContent, fileLength,mTime, ordinal,
opts.flatNamespace(),
+ opts.linkingMainExecutable(),
opts.implicitlyLinkIndirectPublicDylibs(),
opts.platform(),
- opts.architecture(),
- opts.architectureName(),
opts.minOSversion(),
+ opts.allowWeakImports(),
+ opts.architecture(),
+ opts.subArchitecture(),
+ opts.enforceDylibSubtypesMatch(),
opts.allowSimulatorToLinkWithMacOSX(),
opts.addVersionLoadCommand(),
opts.targetIOSSimulator(),
}
};
-template <typename A>
-bool Parser<A>::validFile(const uint8_t* fileContent, uint64_t fileLength, const std::string &path,
- const char* archName)
-{
- if ( path.find(".tbd", path.size()-4) == std::string::npos )
- return false;
-
- TBDFile stub((const char*)fileContent, fileLength);
- if ( !stub.validForArch(archName) )
- throwf("missing required architecture %s in file %s", archName, path.c_str());
-
- return true;
-}
-
//
// main function used by linker to instantiate ld::Files
//
time_t modTime, const Options& opts, ld::File::Ordinal ordinal,
bool bundleLoader, bool indirectDylib)
{
+
switch ( opts.architecture() ) {
#if SUPPORT_ARCH_x86_64
case CPU_TYPE_X86_64:
- if ( Parser<x86_64>::validFile(fileContent, fileLength, path, opts.architectureName()) )
- return Parser<x86_64>::parse(fileContent, fileLength, path, modTime, ordinal, opts, indirectDylib);
- break;
+ if (tapi::LinkerInterfaceFile::isSupported(path, fileContent, fileLength))
+ return Parser<x86_64>::parse(path, fileContent, fileLength, modTime, ordinal, opts, indirectDylib);
#endif
#if SUPPORT_ARCH_i386
case CPU_TYPE_I386:
- if ( Parser<x86>::validFile(fileContent, fileLength, path, opts.architectureName()) )
- return Parser<x86>::parse(fileContent, fileLength, path, modTime, ordinal, opts, indirectDylib);
- break;
+ if (tapi::LinkerInterfaceFile::isSupported(path, fileContent, fileLength))
+ return Parser<x86>::parse(path, fileContent, fileLength, modTime, ordinal, opts, indirectDylib);
#endif
#if SUPPORT_ARCH_arm_any
case CPU_TYPE_ARM:
- if ( Parser<arm>::validFile(fileContent, fileLength, path, opts.architectureName()) )
- return Parser<arm>::parse(fileContent, fileLength, path, modTime, ordinal, opts, indirectDylib);
- break;
+ if (tapi::LinkerInterfaceFile::isSupported(path, fileContent, fileLength))
+ return Parser<arm>::parse(path, fileContent, fileLength, modTime, ordinal, opts, indirectDylib);
#endif
#if SUPPORT_ARCH_arm64
case CPU_TYPE_ARM64:
- if ( Parser<arm64>::validFile(fileContent, fileLength, path, opts.architectureName()) )
- return Parser<arm64>::parse(fileContent, fileLength, path, modTime, ordinal, opts, indirectDylib);
- break;
+ if (tapi::LinkerInterfaceFile::isSupported(path, fileContent, fileLength))
+ return Parser<arm64>::parse(path, fileContent, fileLength, modTime, ordinal, opts, indirectDylib);
#endif
}
return nullptr;
bh->populateMustPreserveSymbols(obfuscator);
handlerMap.emplace(std::string(f->path()), bh);
} else if ( ld::LLVMBitcode* bitcode = dynamic_cast<ld::LLVMBitcode*>(f->getBitcode()) ) {
- BitcodeHandler* bitcodeHandler = new BitcodeHandler((char*)bitcode->getContent(), bitcode->getSize());
- bitcodeHandler->populateMustPreserveSymbols(obfuscator);
+ BitcodeHandler bitcodeHandler((char*)bitcode->getContent(), bitcode->getSize());
+ bitcodeHandler.populateMustPreserveSymbols(obfuscator);
}
}
+ // add must preserve symbols from lto input.
+ for ( auto &f : _state.ltoBitcodePath ) {
+ BitcodeTempFile ltoTemp(f.c_str(), false); // Keep the temp file because it needs to be read in later in the pass.
+ BitcodeHandler bitcodeHandler((char*)ltoTemp.getContent(), ltoTemp.getSize());
+ bitcodeHandler.populateMustPreserveSymbols(obfuscator);
+ }
+
// special symbols supplied by linker
obfuscator->addMustPreserveSymbols("___dso_handle");
obfuscator->addMustPreserveSymbols("__mh_execute_header");
}
}
- // Write merged LTO bitcode
+ // Write merged LTO bitcode files
if ( !_state.ltoBitcodePath.empty() ) {
- xar_file_t ltoFile = NULL;
- BitcodeTempFile* ltoTemp = new BitcodeTempFile(_state.ltoBitcodePath.c_str(), !_options.saveTempFiles());
- if ( _options.hideSymbols() ) {
+ int count = 0;
+ for (auto &path : _state.ltoBitcodePath) {
+ std::string xar_name = "lto.o." + std::to_string(count++);
+ xar_file_t ltoFile = NULL;
+ BitcodeTempFile* ltoTemp = new BitcodeTempFile(path.c_str(), !_options.saveTempFiles());
+ if ( _options.hideSymbols() ) {
ld::Bitcode ltoBitcode(ltoTemp->getContent(), ltoTemp->getSize());
char ltoTempFile[PATH_MAX];
sprintf(ltoTempFile, "%s/lto.bc", tempdir);
- obfuscator->bitcodeHideSymbols(<oBitcode, _state.ltoBitcodePath.c_str(), ltoTempFile);
+ obfuscator->bitcodeHideSymbols(<oBitcode, path.c_str(), ltoTempFile);
BitcodeTempFile* ltoStrip = new BitcodeTempFile(ltoTempFile, !_options.saveTempFiles());
- ltoFile = xar_add_frombuffer(x, NULL, "lto.o", (char*)ltoStrip->getContent(), ltoStrip->getSize());
+ ltoFile = xar_add_frombuffer(x, NULL, xar_name.c_str(), (char*)ltoStrip->getContent(), ltoStrip->getSize());
delete ltoStrip;
- } else {
- ltoFile = xar_add_frombuffer(x, NULL, "lto.o", (char*)ltoTemp->getContent(), ltoTemp->getSize());
+ } else {
+ ltoFile = xar_add_frombuffer(x, NULL, xar_name.c_str(), (char*)ltoTemp->getContent(), ltoTemp->getSize());
+ }
+ if ( ltoFile == NULL )
+ throwf("could not add lto file %s to bitcode bundle", path.c_str());
+ if ( xar_prop_set(ltoFile, "file-type", "LTO") != 0 )
+ throwf("could not set bitcode property for %s in bitcode bundle", path.c_str());
+ delete ltoTemp;
}
- if ( ltoFile == NULL )
- throwf("could not add lto file %s to bitcode bundle", _state.ltoBitcodePath.c_str());
- if ( xar_prop_set(ltoFile, "file-type", "LTO") != 0 )
- throwf("could not set bitcode property for %s in bitcode bundle", _state.ltoBitcodePath.c_str());
- delete ltoTemp;
}
// Common LinkOptions
return ((enc & UNWIND_ARM64_MODE_MASK) == UNWIND_ARM64_MODE_DWARF);
}
+
template <>
bool UnwindInfoAtom<arm>::encodingMeansUseDwarf(compact_unwind_encoding_t enc)
{
_fixups.push_back(ld::Fixup(offset, ld::Fixup::k3of3, ld::Fixup::kindStoreLittleEndianLow24of32));
}
+
template <>
void UnwindInfoAtom<arm>::addCompressedAddressOffsetFixup(uint32_t offset, const ld::Atom* func, const ld::Atom* fromFunc)
{
_fixups.push_back(ld::Fixup(offset, ld::Fixup::k2of2, ld::Fixup::kindStoreLittleEndianLow24of32));
}
+
template <>
void UnwindInfoAtom<arm>::addCompressedEncodingFixup(uint32_t offset, const ld::Atom* fde)
{
_fixups.push_back(ld::Fixup(offset, ld::Fixup::k2of2, ld::Fixup::kindStoreLittleEndian32));
}
+
template <>
void UnwindInfoAtom<arm>::addRegularAddressFixup(uint32_t offset, const ld::Atom* func)
{
_fixups.push_back(ld::Fixup(offset+4, ld::Fixup::k2of2, ld::Fixup::kindStoreLittleEndianLow24of32));
}
+
template <>
void UnwindInfoAtom<arm>::addRegularFDEOffsetFixup(uint32_t offset, const ld::Atom* fde)
{
_fixups.push_back(ld::Fixup(offset, ld::Fixup::k2of2, ld::Fixup::kindStoreLittleEndian32));
}
+
template <>
void UnwindInfoAtom<arm>::addImageOffsetFixup(uint32_t offset, const ld::Atom* targ)
{
_fixups.push_back(ld::Fixup(offset, ld::Fixup::k3of3, ld::Fixup::kindStoreLittleEndian32));
}
+
template <>
void UnwindInfoAtom<arm>::addImageOffsetFixupPlusAddend(uint32_t offset, const ld::Atom* targ, uint32_t addend)
{
targetIsWeakImport = fit->weakImport;
break;
default:
- break;
+ break;
}
if ( (target != NULL) && (target->definition() == ld::Atom::definitionProxy) ) {
+ if ( targetIsWeakImport && !opts.allowWeakImports() )
+ throwf("weak import of symbol '%s' not supported because of option: -no_weak_imports", target->name());
ld::Atom::WeakImportState curWI = target->weakImportState();
if ( curWI == ld::Atom::weakImportUnset ) {
// first use of this proxy, set weak-import based on this usage
}
};
+class DataPadAtom : public ld::Atom {
+public:
+ DataPadAtom(ld::Internal& state)
+ : ld::Atom(_s_section, ld::Atom::definitionRegular, ld::Atom::combineNever,
+ ld::Atom::scopeTranslationUnit, ld::Atom::typeUnclassified,
+ symbolTableNotIn, false, false, false, ld::Atom::Alignment(3))
+ { state.addAtom(*this); }
+
+
+ virtual const ld::File* file() const { return NULL; }
+ virtual const char* name() const { return "padding"; }
+ virtual uint64_t size() const { return 8; }
+ virtual uint64_t objectAddress() const { return 0; }
+ virtual void copyRawContent(uint8_t buffer[]) const { }
+
+protected:
+ virtual ~DataPadAtom() {}
+
+ static ld::Section _s_section;
+};
+
+ld::Section DataPadAtom::_s_section("__DATA", "__data", ld::Section::typeUnclassified);
+
+
void doPass(const Options& opts, ld::Internal& state)
{
const bool log = false;
-
+
+ // <rdar://problem/26015603> add __data section if __DATA segment was gutted by dirty data removal
+ if ( (opts.outputKind() == Options::kDynamicLibrary) && opts.useDataConstSegment() && opts.hasDataSymbolMoves() ) {
+ uint64_t dataAtomsSize = 0;
+ bool foundSegmentDATA_DIRTY = false;
+ for (ld::Internal::FinalSection* sect : state.sections) {
+ if ( strcmp(sect->segmentName(), "__DATA") == 0 ) {
+ for (const ld::Atom* atom : sect->atoms) {
+ dataAtomsSize += atom->size();
+ }
+ }
+ else if ( strcmp(sect->segmentName(), "__DATA_DIRTY") == 0 ) {
+ foundSegmentDATA_DIRTY = true;
+ }
+ }
+ if ( foundSegmentDATA_DIRTY && (dataAtomsSize == 0) ) {
+ new DataPadAtom(state);
+ }
+ }
+
// only make make __huge section in final linked images
if ( opts.outputKind() == Options::kObjectFile )
return;
uint32_t flags;
};
-#define OBJC_IMAGE_SUPPORTS_GC (1<<1)
-#define OBJC_IMAGE_REQUIRES_GC (1<<2)
-#define OBJC_IMAGE_OPTIMIZED_BY_DYLD (1<<3)
-#define OBJC_IMAGE_SUPPORTS_COMPACTION (1<<4)
-#define OBJC_IMAGE_IS_SIMULATED (1<<5)
+#define OBJC_IMAGE_SUPPORTS_GC (1<<1)
+#define OBJC_IMAGE_REQUIRES_GC (1<<2)
+#define OBJC_IMAGE_OPTIMIZED_BY_DYLD (1<<3)
+#define OBJC_IMAGE_SUPPORTS_COMPACTION (1<<4)
+#define OBJC_IMAGE_IS_SIMULATED (1<<5)
+#define OBJC_IMAGE_HAS_CATEGORY_CLASS_PROPERTIES (1<<6)
class ObjCImageInfoAtom : public ld::Atom {
public:
ObjCImageInfoAtom(ld::File::ObjcConstraint objcConstraint,
- bool compaction, bool abi2, uint8_t swiftVersion);
+ bool compaction, bool abi2, bool hasCategoryClassProperties, uint8_t swiftVersion);
virtual const ld::File* file() const { return NULL; }
virtual const char* name() const { return "objc image info"; }
template <typename A>
ObjCImageInfoAtom<A>::ObjCImageInfoAtom(ld::File::ObjcConstraint objcConstraint, bool compaction,
- bool abi2, uint8_t swiftVersion)
+ bool abi2, bool hasCategoryClassProperties, uint8_t swiftVersion)
: ld::Atom(abi2 ? _s_sectionABI2 : _s_sectionABI1, ld::Atom::definitionRegular, ld::Atom::combineNever,
ld::Atom::scopeLinkageUnit, ld::Atom::typeUnclassified,
symbolTableNotIn, false, false, false, ld::Atom::Alignment(2))
break;
}
+ if ( hasCategoryClassProperties ) {
+ value |= OBJC_IMAGE_HAS_CATEGORY_CLASS_PROPERTIES;
+ }
+
// provide swift language version in final binary for runtime to inspect
value |= (swiftVersion << 8);
template <typename A>
class PropertyListAtom : public ld::Atom {
public:
+ enum class PropertyKind { ClassProperties, InstanceProperties };
+
PropertyListAtom(ld::Internal& state, const ld::Atom* baseProtocolList,
- const std::vector<const ld::Atom*>* categories,
- std::set<const ld::Atom*>& deadAtoms);
+ const std::vector<const ld::Atom*>* categories,
+ std::set<const ld::Atom*>& deadAtoms,
+ PropertyKind kind);
virtual const ld::File* file() const { return _file; }
virtual const char* name() const { return "objc merged property list"; }
private:
typedef typename A::P::uint_t pint_t;
+ void addFixupAtOffset(uint32_t offset);
+
const ld::Atom* _atom;
std::vector<ld::Fixup> _fixups;
};
if ( hasAddend != NULL )
*hasAddend = false;
for (ld::Fixup::iterator fit=contentAtom->fixupsBegin(); fit != contentAtom->fixupsEnd(); ++fit) {
- if ( fit->offsetInAtom == offset ) {
+ if ( (fit->offsetInAtom == offset) && (fit->kind != ld::Fixup::kindNoneFollowOn) ) {
switch ( fit->binding ) {
case ld::Fixup::bindingsIndirectlyBound:
target = state.indirectBindingTable[fit->u.bindingIndex];
static const ld::Atom* getInstanceMethods(ld::Internal& state, const ld::Atom* contentAtom);
static const ld::Atom* getClassMethods(ld::Internal& state, const ld::Atom* contentAtom);
static const ld::Atom* getProtocols(ld::Internal& state, const ld::Atom* contentAtom);
- static const ld::Atom* getProperties(ld::Internal& state, const ld::Atom* contentAtom);
+ static const ld::Atom* getInstanceProperties(ld::Internal& state, const ld::Atom* contentAtom);
+ static const ld::Atom* getClassProperties(ld::Internal& state, const ld::Atom* contentAtom);
static uint32_t size() { return 6*sizeof(pint_t); }
private:
typedef typename A::P::uint_t pint_t;
}
template <typename A>
-const ld::Atom* Category<A>::getProperties(ld::Internal& state, const ld::Atom* contentAtom)
+const ld::Atom* Category<A>::getInstanceProperties(ld::Internal& state, const ld::Atom* contentAtom)
{
return ObjCData<A>::getPointerInContent(state, contentAtom, 5*sizeof(pint_t)); // category_t.instanceProperties
}
+template <typename A>
+const ld::Atom* Category<A>::getClassProperties(ld::Internal& state, const ld::Atom* contentAtom)
+{
+ // Only specially-marked files have this field.
+ if (!contentAtom->file()->objcHasCategoryClassPropertiesField()) return NULL;
+
+ return ObjCData<A>::getPointerInContent(state, contentAtom, 6*sizeof(pint_t)); // category_t.classProperties
+}
+
template <typename A>
class MethodList : public ObjCData<A> {
template <typename A>
class Class : public ObjCData<A> {
public:
+ static const ld::Atom* getMetaClass(ld::Internal& state, const ld::Atom* classAtom);
static const ld::Atom* getInstanceMethodList(ld::Internal& state, const ld::Atom* classAtom);
static const ld::Atom* getInstanceProtocolList(ld::Internal& state, const ld::Atom* classAtom);
static const ld::Atom* getInstancePropertyList(ld::Internal& state, const ld::Atom* classAtom);
static const ld::Atom* getClassMethodList(ld::Internal& state, const ld::Atom* classAtom);
+ static const ld::Atom* getClassPropertyList(ld::Internal& state, const ld::Atom* classAtom);
static const ld::Atom* setInstanceMethodList(ld::Internal& state, const ld::Atom* classAtom,
const ld::Atom* methodListAtom, std::set<const ld::Atom*>& deadAtoms);
static const ld::Atom* setInstanceProtocolList(ld::Internal& state, const ld::Atom* classAtom,
const ld::Atom* methodListAtom, std::set<const ld::Atom*>& deadAtoms);
static const ld::Atom* setClassProtocolList(ld::Internal& state, const ld::Atom* classAtom,
const ld::Atom* protocolListAtom, std::set<const ld::Atom*>& deadAtoms);
- static uint32_t size() { return 5*sizeof(pint_t); }
- static unsigned int class_ro_header_size();
+ static const ld::Atom* setClassPropertyList(ld::Internal& state, const ld::Atom* classAtom,
+ const ld::Atom* propertyListAtom, std::set<const ld::Atom*>& deadAtoms);
+ static uint32_t size() { return sizeof(Content); }
+
private:
+ friend class ClassROOverlayAtom<A>;
+
typedef typename A::P::uint_t pint_t;
+
static const ld::Atom* getROData(ld::Internal& state, const ld::Atom* classAtom);
+
+ struct Content {
+ pint_t isa;
+ pint_t superclass;
+ pint_t method_cache;
+ pint_t vtable;
+ pint_t data;
+ };
+
+ struct ROContent {
+ uint32_t flags;
+ uint32_t instanceStart;
+ // Note there is 4-bytes of alignment padding between instanceSize
+ // and ivarLayout on 64-bit archs, but no padding on 32-bit archs.
+ // This union is a way to model that.
+ union {
+ uint32_t instanceSize;
+ pint_t pad;
+ } instanceSize;
+ pint_t ivarLayout;
+ pint_t name;
+ pint_t baseMethods;
+ pint_t baseProtocols;
+ pint_t ivars;
+ pint_t weakIvarLayout;
+ pint_t baseProperties;
+ };
};
-template <> unsigned int Class<x86_64>::class_ro_header_size() { return 16; }
-template <> unsigned int Class<arm>::class_ro_header_size() { return 12;}
-template <> unsigned int Class<x86>::class_ro_header_size() { return 12; }
+#define GET_FIELD(state, classAtom, field) \
+ ObjCData<A>::getPointerInContent(state, classAtom, offsetof(Content, field))
+#define SET_FIELD(state, classAtom, field, valueAtom) \
+ ObjCData<A>::setPointerInContent(state, classAtom, offsetof(Content, field), valueAtom)
+#define GET_RO_FIELD(state, classAtom, field) \
+ ObjCData<A>::getPointerInContent(state, getROData(state, classAtom), offsetof(ROContent, field))
+#define SET_RO_FIELD(state, classROAtom, field, valueAtom) \
+ ObjCData<A>::setPointerInContent(state, getROData(state, classAtom), offsetof(ROContent, field), valueAtom)
template <typename A>
-const ld::Atom* Class<A>::getROData(ld::Internal& state, const ld::Atom* classAtom)
+const ld::Atom* Class<A>::getMetaClass(ld::Internal& state, const ld::Atom* classAtom)
{
- return ObjCData<A>::getPointerInContent(state, classAtom, 4*sizeof(pint_t)); // class_t.data
+ const ld::Atom* metaClassAtom = GET_FIELD(state, classAtom, isa);
+ assert(metaClassAtom != NULL);
+ return metaClassAtom;
+}
+template <typename A>
+const ld::Atom* Class<A>::getROData(ld::Internal& state, const ld::Atom* classAtom)
+{
+ const ld::Atom* classROAtom = GET_FIELD(state, classAtom, data);
+ assert(classROAtom != NULL);
+ return classROAtom;
}
template <typename A>
const ld::Atom* Class<A>::getInstanceMethodList(ld::Internal& state, const ld::Atom* classAtom)
{
- const ld::Atom* classROAtom = getROData(state, classAtom); // class_t.data
- assert(classROAtom != NULL);
- return ObjCData<A>::getPointerInContent(state, classROAtom, class_ro_header_size() + 2*sizeof(pint_t)); // class_ro_t.baseMethods
+ return GET_RO_FIELD(state, classAtom, baseMethods);
}
template <typename A>
const ld::Atom* Class<A>::getInstanceProtocolList(ld::Internal& state, const ld::Atom* classAtom)
{
- const ld::Atom* classROAtom = getROData(state, classAtom); // class_t.data
- assert(classROAtom != NULL);
- return ObjCData<A>::getPointerInContent(state, classROAtom, class_ro_header_size() + 3*sizeof(pint_t)); // class_ro_t.baseProtocols
+ return GET_RO_FIELD(state, classAtom, baseProtocols);
}
template <typename A>
const ld::Atom* Class<A>::getInstancePropertyList(ld::Internal& state, const ld::Atom* classAtom)
{
- const ld::Atom* classROAtom = getROData(state, classAtom); // class_t.data
- assert(classROAtom != NULL);
- return ObjCData<A>::getPointerInContent(state, classROAtom, class_ro_header_size() + 6*sizeof(pint_t)); // class_ro_t.baseProperties
+ return GET_RO_FIELD(state, classAtom, baseProperties);
}
template <typename A>
const ld::Atom* Class<A>::getClassMethodList(ld::Internal& state, const ld::Atom* classAtom)
{
- const ld::Atom* metaClassAtom = ObjCData<A>::getPointerInContent(state, classAtom, 0); // class_t.isa
- assert(metaClassAtom != NULL);
- return Class<A>::getInstanceMethodList(state, metaClassAtom);
+ return Class<A>::getInstanceMethodList(state, getMetaClass(state, classAtom));
+}
+
+template <typename A>
+const ld::Atom* Class<A>::getClassPropertyList(ld::Internal& state, const ld::Atom* classAtom)
+{
+ return Class<A>::getInstancePropertyList(state, getMetaClass(state, classAtom));
}
template <typename A>
const ld::Atom* Class<A>::setInstanceMethodList(ld::Internal& state, const ld::Atom* classAtom,
const ld::Atom* methodListAtom, std::set<const ld::Atom*>& deadAtoms)
{
- const ld::Atom* classROAtom = getROData(state, classAtom); // class_t.data
- assert(classROAtom != NULL);
// if the base class does not already have a method list, we need to create an overlay
if ( getInstanceMethodList(state, classAtom) == NULL ) {
- ClassROOverlayAtom<A>* overlay = new ClassROOverlayAtom<A>(classROAtom);
+ const ld::Atom* oldROAtom = getROData(state, classAtom);
+ deadAtoms.insert(oldROAtom);
+ ClassROOverlayAtom<A>* overlay = new ClassROOverlayAtom<A>(oldROAtom);
//fprintf(stderr, "replace class RO atom %p with %p for method list in class atom %s\n", classROAtom, overlay, classAtom->name());
overlay->addMethodListFixup();
- ObjCData<A>::setPointerInContent(state, classAtom, 4*sizeof(pint_t), overlay); // class_t.data
- deadAtoms.insert(classROAtom);
- ObjCData<A>::setPointerInContent(state, overlay, class_ro_header_size() + 2*sizeof(pint_t), methodListAtom); // class_ro_t.baseMethods
+ SET_FIELD(state, classAtom, data, overlay);
+ SET_RO_FIELD(state, classAtom, baseMethods, methodListAtom);
return overlay;
}
- ObjCData<A>::setPointerInContent(state, classROAtom, class_ro_header_size() + 2*sizeof(pint_t), methodListAtom); // class_ro_t.baseMethods
+ SET_RO_FIELD(state, classAtom, baseMethods, methodListAtom);
return NULL; // means classRO atom was not replaced
}
const ld::Atom* Class<A>::setInstanceProtocolList(ld::Internal& state, const ld::Atom* classAtom,
const ld::Atom* protocolListAtom, std::set<const ld::Atom*>& deadAtoms)
{
- const ld::Atom* classROAtom = getROData(state, classAtom); // class_t.data
- assert(classROAtom != NULL);
// if the base class does not already have a protocol list, we need to create an overlay
if ( getInstanceProtocolList(state, classAtom) == NULL ) {
- ClassROOverlayAtom<A>* overlay = new ClassROOverlayAtom<A>(classROAtom);
+ const ld::Atom* oldROAtom = getROData(state, classAtom);
+ deadAtoms.insert(oldROAtom);
+ ClassROOverlayAtom<A>* overlay = new ClassROOverlayAtom<A>(oldROAtom);
//fprintf(stderr, "replace class RO atom %p with %p for protocol list in class atom %s\n", classROAtom, overlay, classAtom->name());
overlay->addProtocolListFixup();
- ObjCData<A>::setPointerInContent(state, classAtom, 4*sizeof(pint_t), overlay); // class_t.data
- deadAtoms.insert(classROAtom);
- ObjCData<A>::setPointerInContent(state, overlay, class_ro_header_size() + 3*sizeof(pint_t), protocolListAtom); // class_ro_t.baseProtocols
+ SET_FIELD(state, classAtom, data, overlay);
+ SET_RO_FIELD(state, classAtom, baseProtocols, protocolListAtom);
return overlay;
}
//fprintf(stderr, "set class RO atom %p protocol list in class atom %s\n", classROAtom, classAtom->name());
- ObjCData<A>::setPointerInContent(state, classROAtom, class_ro_header_size() + 3*sizeof(pint_t), protocolListAtom); // class_ro_t.baseProtocols
+ SET_RO_FIELD(state, classAtom, baseProtocols, protocolListAtom);
return NULL; // means classRO atom was not replaced
}
const ld::Atom* protocolListAtom, std::set<const ld::Atom*>& deadAtoms)
{
// meta class also points to same protocol list as class
- const ld::Atom* metaClassAtom = ObjCData<A>::getPointerInContent(state, classAtom, 0); // class_t.isa
+ const ld::Atom* metaClassAtom = getMetaClass(state, classAtom);
//fprintf(stderr, "setClassProtocolList(), classAtom=%p %s, metaClass=%p %s\n", classAtom, classAtom->name(), metaClassAtom, metaClassAtom->name());
- assert(metaClassAtom != NULL);
return setInstanceProtocolList(state, metaClassAtom, protocolListAtom, deadAtoms);
}
const ld::Atom* Class<A>::setInstancePropertyList(ld::Internal& state, const ld::Atom* classAtom,
const ld::Atom* propertyListAtom, std::set<const ld::Atom*>& deadAtoms)
{
- const ld::Atom* classROAtom = getROData(state, classAtom); // class_t.data
- assert(classROAtom != NULL);
// if the base class does not already have a property list, we need to create an overlay
if ( getInstancePropertyList(state, classAtom) == NULL ) {
- ClassROOverlayAtom<A>* overlay = new ClassROOverlayAtom<A>(classROAtom);
+ const ld::Atom* oldROAtom = getROData(state, classAtom);
+ deadAtoms.insert(oldROAtom);
+ ClassROOverlayAtom<A>* overlay = new ClassROOverlayAtom<A>(oldROAtom);
//fprintf(stderr, "replace class RO atom %p with %p for property list in class atom %s\n", classROAtom, overlay, classAtom->name());
overlay->addPropertyListFixup();
- ObjCData<A>::setPointerInContent(state, classAtom, 4*sizeof(pint_t), overlay); // class_t.data
- deadAtoms.insert(classROAtom);
- ObjCData<A>::setPointerInContent(state, overlay, class_ro_header_size() + 6*sizeof(pint_t), propertyListAtom); // class_ro_t.baseProperties
+ SET_FIELD(state, classAtom, data, overlay);
+ SET_RO_FIELD(state, classAtom, baseProperties, propertyListAtom);
return overlay;
}
- ObjCData<A>::setPointerInContent(state, classROAtom, class_ro_header_size() + 6*sizeof(pint_t), propertyListAtom); // class_ro_t.baseProperties
+ SET_RO_FIELD(state, classAtom, baseProperties, propertyListAtom);
return NULL; // means classRO atom was not replaced
}
const ld::Atom* methodListAtom, std::set<const ld::Atom*>& deadAtoms)
{
// class methods is just instance methods of metaClass
- const ld::Atom* metaClassAtom = ObjCData<A>::getPointerInContent(state, classAtom, 0); // class_t.isa
- assert(metaClassAtom != NULL);
- return setInstanceMethodList(state, metaClassAtom, methodListAtom, deadAtoms);
+ return setInstanceMethodList(state, getMetaClass(state, classAtom), methodListAtom, deadAtoms);
}
-
-
-template <>
-void ClassROOverlayAtom<x86_64>::addMethodListFixup()
-{
- const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<x86_64>::class_ro_header_size() + 2*8; // class_ro_t.baseMethods
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian64, targetAtom));
-}
-
-template <>
-void ClassROOverlayAtom<arm>::addMethodListFixup()
+template <typename A>
+const ld::Atom* Class<A>::setClassPropertyList(ld::Internal& state, const ld::Atom* classAtom,
+ const ld::Atom* propertyListAtom, std::set<const ld::Atom*>& deadAtoms)
{
- const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<arm>::class_ro_header_size() + 2*4; // class_ro_t.baseMethods
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian32, targetAtom));
+ // class properties is just instance properties of metaClass
+ return setInstancePropertyList(state, getMetaClass(state, classAtom), propertyListAtom, deadAtoms);
}
-template <>
-void ClassROOverlayAtom<x86>::addMethodListFixup()
-{
- const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<x86>::class_ro_header_size() + 2*4; // class_ro_t.baseMethods
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian32, targetAtom));
-}
+#undef GET_FIELD
+#undef SET_FIELD
+#undef GET_RO_FIELD
+#undef SET_RO_FIELD
+template <typename P>
+ld::Fixup::Kind pointerFixupKind();
-template <>
-void ClassROOverlayAtom<x86_64>::addProtocolListFixup()
-{
- const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<x86_64>::class_ro_header_size() + 3*8; // class_ro_t.baseProtocols
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian64, targetAtom));
+template <>
+ld::Fixup::Kind pointerFixupKind<Pointer32<BigEndian>>() {
+ return ld::Fixup::kindStoreTargetAddressBigEndian32;
}
-
-template <>
-void ClassROOverlayAtom<arm>::addProtocolListFixup()
-{
- const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<arm>::class_ro_header_size() + 3*4; // class_ro_t.baseProtocols
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian32, targetAtom));
+template <>
+ld::Fixup::Kind pointerFixupKind<Pointer64<BigEndian>>() {
+ return ld::Fixup::kindStoreTargetAddressBigEndian64;
+}
+template <>
+ld::Fixup::Kind pointerFixupKind<Pointer32<LittleEndian>>() {
+ return ld::Fixup::kindStoreTargetAddressLittleEndian32;
+}
+template <>
+ld::Fixup::Kind pointerFixupKind<Pointer64<LittleEndian>>() {
+ return ld::Fixup::kindStoreTargetAddressLittleEndian64;
}
-template <>
-void ClassROOverlayAtom<x86>::addProtocolListFixup()
+template <typename A>
+void ClassROOverlayAtom<A>::addFixupAtOffset(uint32_t offset)
{
const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<x86>::class_ro_header_size() + 3*4; // class_ro_t.baseProtocols
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian32, targetAtom));
+ _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, pointerFixupKind<typename A::P>(), targetAtom));
}
-template <>
-void ClassROOverlayAtom<x86_64>::addPropertyListFixup()
+template <typename A>
+void ClassROOverlayAtom<A>::addMethodListFixup()
{
- const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<x86_64>::class_ro_header_size() + 6*8; // class_ro_t.baseProperties
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian64, targetAtom));
+ addFixupAtOffset(offsetof(typename Class<A>::ROContent, baseMethods));
}
-template <>
-void ClassROOverlayAtom<arm>::addPropertyListFixup()
+template <typename A>
+void ClassROOverlayAtom<A>::addProtocolListFixup()
{
- const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<arm>::class_ro_header_size() + 6*4; // class_ro_t.baseProperties
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian32, targetAtom));
+ addFixupAtOffset(offsetof(typename Class<A>::ROContent, baseProtocols));
}
-template <>
-void ClassROOverlayAtom<x86>::addPropertyListFixup()
+template <typename A>
+void ClassROOverlayAtom<A>::addPropertyListFixup()
{
- const ld::Atom* targetAtom = this; // temporary
- uint32_t offset = Class<x86>::class_ro_header_size() + 6*4; // class_ro_t.baseProperties
- _fixups.push_back(ld::Fixup(offset, ld::Fixup::k1of1, ld::Fixup::kindStoreTargetAddressLittleEndian32, targetAtom));
+ addFixupAtOffset(offsetof(typename Class<A>::ROContent, baseProperties));
}
static bool hasInstanceMethods(ld::Internal& state, const std::vector<const ld::Atom*>* categories);
static bool hasClassMethods(ld::Internal& state, const std::vector<const ld::Atom*>* categories);
static bool hasProtocols(ld::Internal& state, const std::vector<const ld::Atom*>* categories);
- static bool hasProperties(ld::Internal& state, const std::vector<const ld::Atom*>* categories);
-
+ static bool hasInstanceProperties(ld::Internal& state, const std::vector<const ld::Atom*>* categories);
+ static bool hasClassProperties(ld::Internal& state, const std::vector<const ld::Atom*>* categories);
static unsigned int class_ro_baseMethods_offset();
private:
template <typename A>
-bool OptimizeCategories<A>::hasProperties(ld::Internal& state, const std::vector<const ld::Atom*>* categories)
+bool OptimizeCategories<A>::hasInstanceProperties(ld::Internal& state, const std::vector<const ld::Atom*>* categories)
{
for (std::vector<const ld::Atom*>::const_iterator it=categories->begin(); it != categories->end(); ++it) {
const ld::Atom* categoryAtom = *it;
- const ld::Atom* propertyListAtom = Category<A>::getProperties(state, categoryAtom);
+ const ld::Atom* propertyListAtom = Category<A>::getInstanceProperties(state, categoryAtom);
+ if ( propertyListAtom != NULL ) {
+ if ( PropertyList<A>::count(state, propertyListAtom) > 0 )
+ return true;
+ }
+ }
+ return false;
+}
+
+
+template <typename A>
+bool OptimizeCategories<A>::hasClassProperties(ld::Internal& state, const std::vector<const ld::Atom*>* categories)
+{
+ for (std::vector<const ld::Atom*>::const_iterator it=categories->begin(); it != categories->end(); ++it) {
+ const ld::Atom* categoryAtom = *it;
+ const ld::Atom* propertyListAtom = Category<A>::getClassProperties(state, categoryAtom);
if ( propertyListAtom != NULL ) {
if ( PropertyList<A>::count(state, propertyListAtom) > 0 )
return true;
std::sort(atoms.begin(), atoms.end(), AtomSorter());
}
+
template <typename A>
void OptimizeCategories<A>::doit(const Options& opts, ld::Internal& state)
{
state.atomToSection[newMetaClassRO] = methodListSection;
}
}
- // if any category adds properties, generate new merged property list, and replace
- if ( OptimizeCategories<A>::hasProperties(state, categories) ) {
+ // if any category adds instance properties, generate new merged property list, and replace
+ if ( OptimizeCategories<A>::hasInstanceProperties(state, categories) ) {
const ld::Atom* basePropertyListAtom = Class<A>::getInstancePropertyList(state, classAtom);
- const ld::Atom* newPropertyListAtom = new PropertyListAtom<A>(state, basePropertyListAtom, categories, deadAtoms);
+ const ld::Atom* newPropertyListAtom = new PropertyListAtom<A>(state, basePropertyListAtom, categories, deadAtoms, PropertyListAtom<A>::PropertyKind::InstanceProperties);
const ld::Atom* newClassRO = Class<A>::setInstancePropertyList(state, classAtom, newPropertyListAtom, deadAtoms);
// add new property list to final sections
methodListSection->atoms.push_back(newPropertyListAtom);
state.atomToSection[newClassRO] = methodListSection;
}
}
-
+ // if any category adds class properties, generate new merged property list, and replace
+ if ( OptimizeCategories<A>::hasClassProperties(state, categories) ) {
+ const ld::Atom* basePropertyListAtom = Class<A>::getClassPropertyList(state, classAtom);
+ const ld::Atom* newPropertyListAtom = new PropertyListAtom<A>(state, basePropertyListAtom, categories, deadAtoms, PropertyListAtom<A>::PropertyKind::ClassProperties);
+ const ld::Atom* newClassRO = Class<A>::setClassPropertyList(state, classAtom, newPropertyListAtom, deadAtoms);
+ // add new property list to final sections
+ methodListSection->atoms.push_back(newPropertyListAtom);
+ state.atomToSection[newPropertyListAtom] = methodListSection;
+ if ( newClassRO != NULL ) {
+ assert(strcmp(newClassRO->section().sectionName(), "__objc_const") == 0);
+ methodListSection->atoms.push_back(newClassRO);
+ state.atomToSection[newClassRO] = methodListSection;
+ }
+ }
}
// remove dead atoms
}
+
template <typename A>
MethodListAtom<A>::MethodListAtom(ld::Internal& state, const ld::Atom* baseMethodList, bool meta,
const std::vector<const ld::Atom*>* categories, std::set<const ld::Atom*>& deadAtoms)
template <typename A>
PropertyListAtom<A>::PropertyListAtom(ld::Internal& state, const ld::Atom* basePropertyList,
- const std::vector<const ld::Atom*>* categories, std::set<const ld::Atom*>& deadAtoms)
+ const std::vector<const ld::Atom*>* categories, std::set<const ld::Atom*>& deadAtoms, PropertyKind kind)
: ld::Atom(_s_section, ld::Atom::definitionRegular, ld::Atom::combineNever,
ld::Atom::scopeLinkageUnit, ld::Atom::typeUnclassified,
symbolTableNotIn, false, false, false, ld::Atom::Alignment(3)), _file(NULL), _propertyCount(0)
fixupCount = basePropertyList->fixupsEnd() - basePropertyList->fixupsBegin();
}
for (std::vector<const ld::Atom*>::const_iterator ait=categories->begin(); ait != categories->end(); ++ait) {
- const ld::Atom* categoryPropertyListAtom = Category<A>::getProperties(state, *ait);
+ const ld::Atom* categoryPropertyListAtom = kind == PropertyKind::ClassProperties ? Category<A>::getClassProperties(state, *ait) : Category<A>::getInstanceProperties(state, *ait);
if ( categoryPropertyListAtom != NULL ) {
_propertyCount += PropertyList<A>::count(state, categoryPropertyListAtom);
fixupCount += (categoryPropertyListAtom->fixupsEnd() - categoryPropertyListAtom->fixupsBegin());
_fixups.reserve(fixupCount);
uint32_t slide = 0;
for (std::vector<const ld::Atom*>::const_iterator it=categories->begin(); it != categories->end(); ++it) {
- const ld::Atom* categoryPropertyListAtom = Category<A>::getProperties(state, *it);
+ const ld::Atom* categoryPropertyListAtom = kind == PropertyKind::ClassProperties ? Category<A>::getClassProperties(state, *it) : Category<A>::getInstanceProperties(state, *it);
if ( categoryPropertyListAtom != NULL ) {
for (ld::Fixup::iterator fit=categoryPropertyListAtom->fixupsBegin(); fit != categoryPropertyListAtom->fixupsEnd(); ++fit) {
ld::Fixup fixup = *fit;
}
+template <typename A>
+void scanCategories(ld::Internal& state,
+ bool& haveCategoriesWithNonNullClassProperties,
+ bool& haveCategoriesWithoutClassPropertyStorage)
+{
+ haveCategoriesWithNonNullClassProperties = false;
+ haveCategoriesWithoutClassPropertyStorage = false;
+
+ for (std::vector<ld::Internal::FinalSection*>::iterator sit=state.sections.begin(); sit != state.sections.end(); ++sit) {
+ ld::Internal::FinalSection* sect = *sit;
+ if ( sect->type() == ld::Section::typeObjC2CategoryList ) {
+ for (std::vector<const ld::Atom*>::iterator ait=sect->atoms.begin(); ait != sect->atoms.end(); ++ait) {
+ const ld::Atom* categoryListElementAtom = *ait;
+ bool hasAddend;
+ const ld::Atom* categoryAtom = ObjCData<A>::getPointerInContent(state, categoryListElementAtom, 0, &hasAddend);
+
+ if (Category<A>::getClassProperties(state, categoryAtom)) {
+ haveCategoriesWithNonNullClassProperties = true;
+ // fprintf(stderr, "category in file %s has non-null class properties\n", categoryAtom->file()->path());
+ }
+
+ if (!categoryAtom->file()->objcHasCategoryClassPropertiesField()) {
+ haveCategoriesWithoutClassPropertyStorage = true;
+ // fprintf(stderr, "category in file %s has no storage for class properties\n", categoryAtom->file()->path());
+ }
+ }
+ }
+ }
+}
+template <typename A, bool isObjC2>
void doPass(const Options& opts, ld::Internal& state)
-{
- // only make image info section if objc was used
- if ( state.objcObjectConstraint != ld::File::objcConstraintNone ) {
-
- // verify dylibs are GC compatible with object files
- if ( state.objcObjectConstraint != state.objcDylibConstraint ) {
- if ( (state.objcDylibConstraint == ld::File::objcConstraintRetainRelease)
- && (state.objcObjectConstraint == ld::File::objcConstraintGC) ) {
- throw "Linked dylibs built for retain/release but object files built for GC-only";
- }
- else if ( (state.objcDylibConstraint == ld::File::objcConstraintGC)
- && (state.objcObjectConstraint == ld::File::objcConstraintRetainRelease) ) {
- throw "Linked dylibs built for GC-only but object files built for retain/release";
- }
+{
+ // Do nothing if the output has no ObjC content.
+ if ( state.objcObjectConstraint == ld::File::objcConstraintNone ) {
+ return;
+ }
+
+ // verify dylibs are GC compatible with object files
+ if ( state.objcObjectConstraint != state.objcDylibConstraint ) {
+ if ( (state.objcDylibConstraint == ld::File::objcConstraintRetainRelease)
+ && (state.objcObjectConstraint == ld::File::objcConstraintGC) ) {
+ throw "Linked dylibs built for retain/release but object files built for GC-only";
+ }
+ else if ( (state.objcDylibConstraint == ld::File::objcConstraintGC)
+ && (state.objcObjectConstraint == ld::File::objcConstraintRetainRelease) ) {
+ throw "Linked dylibs built for GC-only but object files built for retain/release";
}
-
- const bool compaction = opts.objcGcCompaction();
-
- // add image info atom
- switch ( opts.architecture() ) {
-#if SUPPORT_ARCH_x86_64
- case CPU_TYPE_X86_64:
- state.addAtom(*new ObjCImageInfoAtom<x86_64>(state.objcObjectConstraint, compaction,
- true, state.swiftVersion));
- break;
-#endif
-#if SUPPORT_ARCH_i386
- case CPU_TYPE_I386:
- state.addAtom(*new ObjCImageInfoAtom<x86>(state.objcObjectConstraint, compaction,
- opts.objCABIVersion2POverride() ? true : false, state.swiftVersion));
- break;
-#endif
-#if SUPPORT_ARCH_arm_any
- case CPU_TYPE_ARM:
- state.addAtom(*new ObjCImageInfoAtom<arm>(state.objcObjectConstraint, compaction,
- true, state.swiftVersion));
- break;
-#endif
-#if SUPPORT_ARCH_arm64
- case CPU_TYPE_ARM64:
- state.addAtom(*new ObjCImageInfoAtom<arm64>(state.objcObjectConstraint, compaction,
- true, state.swiftVersion));
- break;
-#endif
- default:
- assert(0 && "unknown objc arch");
- }
}
-
+
if ( opts.objcCategoryMerging() ) {
// optimize classes defined in this linkage unit by merging in categories also in this linkage unit
- switch ( opts.architecture() ) {
+ OptimizeCategories<A>::doit(opts, state);
+ }
+
+ // Search for surviving categories that have a non-null class properties field.
+ // Search for surviving categories that do not have storage for the class properties field.
+ bool haveCategoriesWithNonNullClassProperties;
+ bool haveCategoriesWithoutClassPropertyStorage;
+ scanCategories<A>(state, haveCategoriesWithNonNullClassProperties, haveCategoriesWithoutClassPropertyStorage);
+
+ // Complain about mismatched category ABI.
+ // These can't be combined into a single linkage unit because there is only one size indicator for all categories in the file.
+ // If there is a mismatch then we don't set the HasCategoryClassProperties bit in the output file,
+ // which has at runtime causes any class property metadata that was present to be ignored.
+ if (haveCategoriesWithNonNullClassProperties && haveCategoriesWithoutClassPropertyStorage) {
+ warning("Some object files have incompatible Objective-C category definitions. Some category metadata may be lost. All files containing Objective-C categories should be built using the same compiler.");
+ }
+
+ // add image info atom
+ // The HasCategoryClassProperties bit is set as often as possible.
+ state.addAtom(*new ObjCImageInfoAtom<A>(state.objcObjectConstraint, opts.objcGcCompaction(), isObjC2,
+ !haveCategoriesWithoutClassPropertyStorage, state.swiftVersion));
+}
+
+
+void doPass(const Options& opts, ld::Internal& state)
+{
+ switch ( opts.architecture() ) {
#if SUPPORT_ARCH_x86_64
- case CPU_TYPE_X86_64:
- OptimizeCategories<x86_64>::doit(opts, state);
- break;
+ case CPU_TYPE_X86_64:
+ doPass<x86_64, true>(opts, state);
+ break;
#endif
#if SUPPORT_ARCH_i386
- case CPU_TYPE_I386:
- if ( opts.objCABIVersion2POverride() )
- OptimizeCategories<x86>::doit(opts, state);
- break;
+ case CPU_TYPE_I386:
+ if (opts.objCABIVersion2POverride()) {
+ doPass<x86, true>(opts, state);
+ } else {
+ doPass<x86, false>(opts, state);
+ }
+ break;
#endif
#if SUPPORT_ARCH_arm_any
- case CPU_TYPE_ARM:
- OptimizeCategories<arm>::doit(opts, state);
- break;
+ case CPU_TYPE_ARM:
+ doPass<arm, true>(opts, state);
+ break;
#endif
#if SUPPORT_ARCH_arm64
- case CPU_TYPE_ARM64:
- // disabled until tested
- break;
+ case CPU_TYPE_ARM64:
+ doPass<arm64, true>(opts, state);
+ break;
#endif
- default:
- assert(0 && "unknown objc arch");
- }
+ default:
+ assert(0 && "unknown objc arch");
}
}
ld::Section KextStubAtom::_s_section("__TEXT", "__stubs", ld::Section::typeCode);
-} // namespace x86_64
+} // namespace arm64
return new ld::passes::stubs::arm::StubPICKextAtom(*this, target);
}
else if ( usingCompressedLINKEDIT() && !forLazyDylib ) {
- if ( (_stubCount < 900) && !_mightBeInSharedRegion && !_largeText )
+ if ( (_stubCount < 900) && !_mightBeInSharedRegion && !_largeText && !_options.makeEncryptable() )
return new ld::passes::stubs::arm::StubCloseAtom(*this, target, stubToGlobalWeakDef, stubToResolver, weakImport);
else if ( _pic )
return new ld::passes::stubs::arm::StubPICAtom(*this, target, stubToGlobalWeakDef, stubToResolver, weakImport, usingDataConst);
case ld::Fixup::kindStoreARM64PCRelToGOT:
printf(", then store as 32-bit delta to GOT entry");
break;
+ case ld::Fixup::kindStoreARM64PointerToGOT32:
+ printf(", then store as 32-bit pointer to GOT entry");
+ break;
case ld::Fixup::kindDtraceExtra:
printf("dtrace static probe extra info");
break;
case MH_DYLIB_STUB:
case MH_BUNDLE:
case MH_DYLINKER:
+ case MH_KEXT_BUNDLE:
return true;
}
return false;
case MH_DYLIB_STUB:
case MH_BUNDLE:
case MH_DYLINKER:
+ case MH_KEXT_BUNDLE:
return true;
}
return false;
case MH_DYLIB:
case MH_BUNDLE:
case MH_DYLINKER:
+ case MH_KEXT_BUNDLE:
return true;
}
return false;
}
#endif
+
template <typename A>
DyldInfoPrinter<A>::DyldInfoPrinter(const uint8_t* fileContent, uint32_t fileLength, const char* path, bool printArch)
: fHeader(NULL), fLength(fileLength),
uint64_t toOffsetCount = read_uleb128(p, infoEnd);
const macho_section<P>* fromSection = fSections[fromSectionIndex];
const macho_section<P>* toSection = fSections[toSectionIndex];
- printf("from sect=%s, to sect=%s, count=%lld:\n", fromSection->sectname(), toSection->sectname(), toOffsetCount);
+ char fromSectionName[20];
+ strncpy(fromSectionName, fromSection->sectname(), 16);
+ fromSectionName[16] = '\0';
+ printf("from sect=%s/%s, to sect=%s/%s, count=%lld:\n", fromSection->segname(), fromSectionName, toSection->segname(), toSection->sectname(), toOffsetCount);
uint64_t toSectionOffset = 0;
const char* lastFromSymbol = NULL;
for (uint64_t j=0; j < toOffsetCount; ++j) {
}
#endif
+
template <>
const char* DyldInfoPrinter<ppc>::relocTypeName(uint8_t r_type)
{
}
#endif
+
template <typename A>
void DyldInfoPrinter<A>::printRelocRebaseInfo()
{
if ( DyldInfoPrinter<arm64>::validFile(p + offset) )
DyldInfoPrinter<arm64>::make(p + offset, size, path, (sPreferredArch == 0));
else
- throw "in universal file, arm64 slice does not contain arm mach-o";
+ throw "in universal file, arm64 slice does not contain arm64 mach-o";
break;
#endif
default:
}
#endif
+
+template <> uint8_t MachOChecker<ppc>::loadCommandSizeMask() { return 0x03; }
+template <> uint8_t MachOChecker<ppc64>::loadCommandSizeMask() { return 0x07; }
template <> uint8_t MachOChecker<x86>::loadCommandSizeMask() { return 0x03; }
template <> uint8_t MachOChecker<x86_64>::loadCommandSizeMask() { return 0x07; }
template <> uint8_t MachOChecker<arm>::loadCommandSizeMask() { return 0x03; }
template <> uint8_t MachOChecker<arm64>::loadCommandSizeMask() { return 0x07; }
-
template <>
x86::P::uint_t MachOChecker<x86>::getInitialStackPointer(const macho_thread_command<x86::P>* threadInfo)
{
}
+template <>
+ppc::P::uint_t MachOChecker<ppc>::getEntryPoint(const macho_thread_command<ppc::P>* threadInfo)
+{
+ return threadInfo->thread_register(0);
+}
+
+
template <>
x86::P::uint_t MachOChecker<x86>::getEntryPoint(const macho_thread_command<x86::P>* threadInfo)
{
}
-
template <typename A>
MachOChecker<A>::MachOChecker(const uint8_t* fileContent, uint32_t fileLength, const char* path, const char* verifierDstRoot)
: fHeader(NULL), fLength(fileLength), fInstallName(NULL), fStrings(NULL), fSymbols(NULL), fSymbolCount(0), fDynamicSymbolTable(NULL), fIndirectTableCount(0),
// verify encryption info
if ( encryption_info != NULL ) {
- if ( fHeader->filetype() != MH_EXECUTE )
- throw "LC_ENCRYPTION_INFO load command is only legal in main executables";
+ switch ( fHeader->filetype() ) {
+ case MH_EXECUTE: case MH_DYLIB: case MH_BUNDLE:
+ break; // okay
+ default:
+ throw "LC_ENCRYPTION_INFO load command is not allowed in this file type";
+ }
if ( encryption_info->cryptoff() < (sizeof(macho_header<P>) + fHeader->sizeofcmds()) )
throw "LC_ENCRYPTION_INFO load command has cryptoff covers some load commands";
if ( (encryption_info->cryptoff() % 4096) != 0 )
throw "string pool extends beyond __LINKEDIT";
if ( (symtab->stroff() % 4) != 0 ) // work around until rdar://problem/4737991 is fixed
throw "string pool start not pointer aligned";
- if ( (symtab->strsize() % sizeof(pint_t)) != 0 )
- throw "string pool size not a multiple of pointer size";
}
break;
case LC_DYSYMTAB:
return fFirstWritableSegment->vmaddr();
}
+
template <typename A>
bool MachOChecker<A>::addressInWritableSegment(pint_t address)
{
}
#endif
+
template <typename A>
void MachOChecker<A>::checkRelocations()
{
--- /dev/null
+/*
+ * Copyright (c) 2007-2009 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+// objcimageinfo.cpp
+// Print or edit ObjC image info bits.
+// This is used to verify ld's handling of these bits
+// for values that are not emitted by current compilers.
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/errno.h>
+#include <mach-o/fat.h>
+#include <mach-o/arch.h>
+#include <mach-o/loader.h>
+
+#include "MachOFileAbstraction.hpp"
+
+#if __BIG_ENDIAN__
+ typedef BigEndian CurrentEndian;
+ typedef LittleEndian OtherEndian;
+#elif __LITTLE_ENDIAN__
+ typedef LittleEndian CurrentEndian;
+ typedef BigEndian OtherEndian;
+#else
+# error unknown endianness
+#endif
+
+static const bool debug = false;
+
+static bool processFile(const char *filename, uint32_t set, uint32_t clear);
+
+// fixme use objc/objc-abi.h instead
+struct objc_image_info {
+ uint32_t version;
+ uint32_t flags;
+
+ enum : uint32_t {
+ IsReplacement = 1<<0, // used for Fix&Continue, now ignored
+ SupportsGC = 1<<1, // image supports GC
+ RequiresGC = 1<<2, // image requires GC
+ OptimizedByDyld = 1<<3, // image is from an optimized shared cache
+ CorrectedSynthesize = 1<<4, // used for an old workaround, now ignored
+ IsSimulated = 1<<5, // image compiled for a simulator platform
+ HasCategoryClassProperties = 1<<6, // class properties in category_t
+
+ SwiftVersionMask = 0xff << 8 // Swift ABI version
+ };
+};
+
+// objc_image_info flags and their names
+static const struct {
+ const char *name;
+ uint32_t value;
+} Flags[] = {
+ { "supports-gc", objc_image_info::SupportsGC },
+ { "requires-gc", objc_image_info::RequiresGC },
+ { "has-category-class-properties", objc_image_info::HasCategoryClassProperties },
+ { 0, 0 }
+};
+
+static void usage(const char *self)
+{
+ printf("usage: %s [+FLAG|-FLAG ...] file ...\n", self);
+ printf("Use +FLAG to set and -FLAG to clear.\n");
+ printf("Known flags: ");
+ for (int i = 0; Flags[i].name != 0; i++) {
+ printf("%s ", Flags[i].name);
+ }
+ printf("\n");
+}
+
+static uint32_t flagForName(const char *name)
+{
+ for (int i = 0; Flags[i].name != 0; i++) {
+ if (0 == strcmp(Flags[i].name, name)) {
+ return Flags[i].value;
+ }
+ }
+ return 0;
+}
+
+static const char *nameForFlag(uint32_t flag)
+{
+ for (int i = 0; Flags[i].name != 0; i++) {
+ if (Flags[i].value == flag) {
+ return Flags[i].name;
+ }
+ }
+ return 0;
+}
+
+static void printFlags(uint32_t flags)
+{
+ printf("0x%x", flags);
+
+ // Print flags and unknown bits
+ for (int i = 0; i < 24; i++) {
+ uint32_t flag = 1<<i;
+ if (flag & objc_image_info::SwiftVersionMask) continue;
+ if (flags & flag) {
+ const char *name = nameForFlag(flag);
+ if (name) printf(" %s", name);
+ else printf(" unknown-%u", flag);
+ }
+ }
+
+ // Print Swift version
+ uint32_t mask = objc_image_info::SwiftVersionMask;
+ uint32_t shift = __builtin_ctzl(mask);
+ uint32_t swift = (flags & mask) >> shift;
+ if (swift > 0) {
+ printf(" swift-version=%u", swift);
+ }
+}
+
+static bool isFlagArgument(const char *arg)
+{
+ return (arg && (arg[0] == '+' || arg[0] == '-'));
+}
+
+int main(int argc, const char *argv[]) {
+ uint32_t set = 0;
+ uint32_t clear = 0;
+
+ // Find flag arguments (which are +FLAG or -FLAG).
+ int i;
+ for (i = 1; i < argc && isFlagArgument(argv[i]); i++) {
+ const char *arg = argv[i];
+ uint32_t flag = flagForName(arg+1);
+ if (flag) {
+ if (arg[0] == '+') {
+ set |= flag;
+ } else {
+ clear |= flag;
+ }
+ } else {
+ printf("error: unrecognized ObjC flag '%s'\n", arg);
+ usage(argv[0]);
+ return 1;
+ }
+ }
+
+ // Complain if +FLAG and -FLAG are both set for some flag.
+ uint32_t overlap = set & clear;
+ if (overlap) {
+ printf("error: conflicting changes specified: ");
+ printFlags(overlap);
+ printf("\n");
+ usage(argv[0]);
+ return 1;
+ }
+
+ // Complain if there are no filenames.
+ if (i == argc) {
+ printf("error: no files specified\n");
+ usage(argv[0]);
+ return 1;
+ }
+
+ // Process files.
+ for (; i < argc; i++) {
+ if (!processFile(argv[i], set, clear)) return 1;
+ }
+ return 0;
+}
+
+
+// Segment and section names are 16 bytes and may be un-terminated.
+static bool segnameEquals(const char *lhs, const char *rhs)
+{
+ return 0 == strncmp(lhs, rhs, 16);
+}
+
+static bool segnameStartsWith(const char *segname, const char *prefix)
+{
+ return 0 == strncmp(segname, prefix, strlen(prefix));
+}
+
+static bool sectnameEquals(const char *lhs, const char *rhs)
+{
+ return segnameEquals(lhs, rhs);
+}
+
+
+template <typename P>
+static void dosect(const char *filename, uint8_t *start, macho_section<P> *sect,
+ uint32_t set, uint32_t clear)
+{
+ if (debug) printf("section %.16s from segment %.16s\n",
+ sect->sectname(), sect->segname());
+
+ if ((segnameStartsWith(sect->segname(), "__DATA") &&
+ sectnameEquals(sect->sectname(), "__objc_imageinfo")) ||
+ (segnameEquals(sect->segname(), "__OBJC") &&
+ sectnameEquals(sect->sectname(), "__image_info")))
+ {
+ objc_image_info *ii = (objc_image_info *)(start + sect->offset());
+ uint32_t oldFlags = P::E::get32(ii->flags);
+ uint32_t newFlags = (oldFlags | set) & ~clear;
+ if (oldFlags != newFlags) {
+ P::E::set32(ii->flags, newFlags);
+ if (debug) printf("changed flags from 0x%x to 0x%x\n",
+ oldFlags, newFlags);
+ }
+
+ printf("%s: ", filename);
+ printFlags(newFlags);
+ printf("\n");
+ }
+}
+
+template <typename P>
+static void doseg(const char *filename,
+ uint8_t *start, macho_segment_command<P> *seg,
+ uint32_t set, uint32_t clear)
+{
+ if (debug) printf("segment name: %.16s, nsects %u\n",
+ seg->segname(), seg->nsects());
+ macho_section<P> *sect = (macho_section<P> *)(seg + 1);
+ for (uint32_t i = 0; i < seg->nsects(); ++i) {
+ dosect(filename, start, §[i], set, clear);
+ }
+}
+
+
+template<typename P>
+static bool parse_macho(const char *filename, uint8_t *buffer,
+ uint32_t set, uint32_t clear)
+{
+ macho_header<P>* mh = (macho_header<P>*)buffer;
+ uint8_t *cmds = (uint8_t *)(mh + 1);
+ for (uint32_t c = 0; c < mh->ncmds(); c++) {
+ macho_load_command<P>* cmd = (macho_load_command<P>*)cmds;
+ cmds += cmd->cmdsize();
+ if (cmd->cmd() == LC_SEGMENT || cmd->cmd() == LC_SEGMENT_64) {
+ doseg(filename, buffer, (macho_segment_command<P>*)cmd, set, clear);
+ }
+ }
+
+ return true;
+}
+
+
+static bool parse_macho(const char *filename, uint8_t *buffer,
+ uint32_t set, uint32_t clear)
+{
+ uint32_t magic = *(uint32_t *)buffer;
+
+ switch (magic) {
+ case MH_MAGIC_64:
+ return parse_macho<Pointer64<CurrentEndian>>
+ (filename, buffer, set, clear);
+ case MH_MAGIC:
+ return parse_macho<Pointer32<CurrentEndian>>
+ (filename, buffer, set, clear);
+ case MH_CIGAM_64:
+ return parse_macho<Pointer64<OtherEndian>>
+ (filename, buffer, set, clear);
+ case MH_CIGAM:
+ return parse_macho<Pointer32<OtherEndian>>
+ (filename, buffer, set, clear);
+ default:
+ printf("error: file '%s' is not mach-o (magic %x)\n", filename, magic);
+ return false;
+ }
+}
+
+
+static bool parse_fat(const char *filename, uint8_t *buffer, size_t size,
+ uint32_t set, uint32_t clear)
+{
+ uint32_t magic;
+
+ if (size < sizeof(magic)) {
+ printf("error: file '%s' is too small\n", filename);
+ return false;
+ }
+
+ magic = *(uint32_t *)buffer;
+ if (magic != FAT_MAGIC && magic != FAT_CIGAM) {
+ /* Not a fat file */
+ return parse_macho(filename, buffer, set, clear);
+ } else {
+ struct fat_header *fh;
+ uint32_t fat_magic, fat_nfat_arch;
+ struct fat_arch *archs;
+
+ if (size < sizeof(struct fat_header)) {
+ printf("error: file '%s' is too small\n", filename);
+ return false;
+ }
+
+ fh = (struct fat_header *)buffer;
+ fat_magic = OSSwapBigToHostInt32(fh->magic);
+ fat_nfat_arch = OSSwapBigToHostInt32(fh->nfat_arch);
+
+ if (size < (sizeof(struct fat_header) + fat_nfat_arch * sizeof(struct fat_arch))) {
+ printf("error: file '%s' is too small\n", filename);
+ return false;
+ }
+
+ archs = (struct fat_arch *)(buffer + sizeof(struct fat_header));
+
+ /* Special case hidden CPU_TYPE_ARM64 */
+ if (size >= (sizeof(struct fat_header) + (fat_nfat_arch + 1) * sizeof(struct fat_arch))) {
+ if (fat_nfat_arch > 0
+ && OSSwapBigToHostInt32(archs[fat_nfat_arch].cputype) == CPU_TYPE_ARM64) {
+ fat_nfat_arch++;
+ }
+ }
+ /* End special case hidden CPU_TYPE_ARM64 */
+
+ if (debug) printf("%d fat architectures\n", fat_nfat_arch);
+
+ for (uint32_t i = 0; i < fat_nfat_arch; i++) {
+ uint32_t arch_cputype = OSSwapBigToHostInt32(archs[i].cputype);
+ uint32_t arch_cpusubtype = OSSwapBigToHostInt32(archs[i].cpusubtype);
+ uint32_t arch_offset = OSSwapBigToHostInt32(archs[i].offset);
+ uint32_t arch_size = OSSwapBigToHostInt32(archs[i].size);
+
+ if (debug) printf("cputype %d cpusubtype %d\n",
+ arch_cputype, arch_cpusubtype);
+
+ /* Check that slice data is after all fat headers and archs */
+ if (arch_offset < (sizeof(struct fat_header) + fat_nfat_arch * sizeof(struct fat_arch))) {
+ printf("error: file is badly formed\n");
+ return false;
+ }
+
+ /* Check that the slice ends before the file does */
+ if (arch_offset > size) {
+ printf("error: file '%s' is badly formed\n", filename);
+ return false;
+ }
+
+ if (arch_size > size) {
+ printf("error: file '%s' is badly formed\n", filename);
+ return false;
+ }
+
+ if (arch_offset > (size - arch_size)) {
+ printf("error: file '%s' is badly formed\n", filename);
+ return false;
+ }
+
+ bool ok = parse_macho(filename, buffer + arch_offset, set, clear);
+ if (!ok) return false;
+ }
+ return true;
+ }
+}
+
+static bool processFile(const char *filename, uint32_t set, uint32_t clear)
+{
+ if (debug) printf("file %s\n", filename);
+ int openPerm = O_RDONLY;
+ int mmapPerm = PROT_READ;
+ if (set || clear) {
+ openPerm = O_RDWR;
+ mmapPerm = PROT_READ | PROT_WRITE;
+ }
+
+ int fd = open(filename, openPerm);
+ if (fd < 0) {
+ printf("error: open %s: %s\n", filename, strerror(errno));
+ return false;
+ }
+
+ struct stat st;
+ if (fstat(fd, &st) < 0) {
+ printf("error: fstat %s: %s\n", filename, strerror(errno));
+ return false;
+ }
+
+ void *buffer = mmap(NULL, (size_t)st.st_size, mmapPerm,
+ MAP_FILE|MAP_SHARED, fd, 0);
+ if (buffer == MAP_FAILED) {
+ printf("error: mmap %s: %s\n", filename, strerror(errno));
+ return false;
+ }
+
+ bool result =
+ parse_fat(filename, (uint8_t *)buffer, (size_t)st.st_size, set, clear);
+ munmap(buffer, (size_t)st.st_size);
+ close(fd);
+ return result;
+}
}
#endif
+
template <>
bool UnwindPrinter<arm>::validFile(const uint8_t* fileContent)
{
}
#endif
+
template <>
void UnwindPrinter<arm>::decode(uint32_t encoding, const uint8_t* funcStart, char* str)
{
}
#endif
+
template <>
const char* UnwindPrinter<arm>::personalityName(const macho_relocation_info<arm::P>* reloc)
{
else if ( UnwindPrinter<arm64>::validFile(p) && onlyArchs.count(CPU_TYPE_ARM64) ) {
UnwindPrinter<arm64>::make(p, length, path, showFunctionNames);
}
-#endif
+#endif
else if ( UnwindPrinter<arm>::validFile(p) && onlyArchs.count(CPU_TYPE_ARM) ) {
UnwindPrinter<arm>::make(p, length, path, showFunctionNames);
}
MYDIR=$(shell cd ../../bin;pwd)
-LD = ld
-OBJECTDUMP = ObjectDump
-MACHOCHECK = machocheck
-OTOOL = xcrun otool
-REBASE = rebase
-DYLDINFO = dyldinfo
+LD = ld
+OBJECTDUMP = ObjectDump
+OBJCIMAGEINFO = objcimageinfo
+MACHOCHECK = machocheck
+OTOOL = xcrun otool
+REBASE = rebase
+DYLDINFO = dyldinfo
ifdef BUILT_PRODUCTS_DIR
# if run within Xcode, add the just built tools to the command path
PATH := ${BUILT_PRODUCTS_DIR}:${MYDIR}:${PATH}
COMPILER_PATH := ${BUILT_PRODUCTS_DIR}:${COMPILER_PATH}
- LD_PATH = ${BUILT_PRODUCTS_DIR}
- LD = ${BUILT_PRODUCTS_DIR}/ld
- OBJECTDUMP = ${BUILT_PRODUCTS_DIR}/ObjectDump
- MACHOCHECK = ${BUILT_PRODUCTS_DIR}/machocheck
- REBASE = ${BUILT_PRODUCTS_DIR}/rebase
- UNWINDDUMP = ${BUILT_PRODUCTS_DIR}/unwinddump
- DYLDINFO = ${BUILT_PRODUCTS_DIR}/dyldinfo
+ LD_PATH = ${BUILT_PRODUCTS_DIR}
+ LD = ${BUILT_PRODUCTS_DIR}/ld
+ OBJECTDUMP = ${BUILT_PRODUCTS_DIR}/ObjectDump
+ OBJCIMAGEINFO = ${BUILT_PRODUCTS_DIR}/objcimageinfo
+ MACHOCHECK = ${BUILT_PRODUCTS_DIR}/machocheck
+ REBASE = ${BUILT_PRODUCTS_DIR}/rebase
+ UNWINDDUMP = ${BUILT_PRODUCTS_DIR}/unwinddump
+ DYLDINFO = ${BUILT_PRODUCTS_DIR}/dyldinfo
else
ifneq "$(findstring /unit-tests/test-cases/, $(shell pwd))" ""
# if run from Terminal inside unit-test directory
DEBUGDIR=$(shell cd ../../../build/Debug;pwd)
PATH := ${RELEASEADIR}:${RELEASEDIR}:${DEBUGDIR}:${MYDIR}:${PATH}
COMPILER_PATH := ${RELEASEADIR}:${RELEASEDIR}:${DEBUGDIR}:${COMPILER_PATH}
- LD_PATH = ${DEBUGDIR}
- LD = ${DEBUGDIR}/ld
- OBJECTDUMP = ${DEBUGDIR}/ObjectDump
- MACHOCHECK = ${DEBUGDIR}/machocheck
- REBASE = ${DEBUGDIR}/rebase
- UNWINDDUMP = ${DEBUGDIR}/unwinddump
- DYLDINFO = ${DEBUGDIR}/dyldinfo
+ LD_PATH = ${DEBUGDIR}
+ LD = ${DEBUGDIR}/ld
+ OBJECTDUMP = ${DEBUGDIR}/ObjectDump
+ OBJCIMAGEINFO = ${DEBUGDIR}/objcimageinfo
+ MACHOCHECK = ${DEBUGDIR}/machocheck
+ REBASE = ${DEBUGDIR}/rebase
+ UNWINDDUMP = ${DEBUGDIR}/unwinddump
+ DYLDINFO = ${DEBUGDIR}/dyldinfo
else
PATH := ${MYDIR}:${PATH}:
COMPILER_PATH := ${MYDIR}:${COMPILER_PATH}:
export COMPILER_PATH
export GCC_EXEC_PREFIX=garbage
+IOS_SDK = $(shell xcodebuild -sdk iphoneos.internal -version Path 2>/dev/null)
+OSX_SDK = $(shell xcodebuild -sdk macosx.internal -version Path 2>/dev/null)
ifeq ($(ARCH),ppc)
- SDKExtra = -isysroot /Developer/SDKs/MacOSX10.6.sdk
+ OSX_SDK = /Developer/SDKs/MacOSX10.6.sdk
endif
-CC = $(shell xcrun -find clang) -arch ${ARCH} ${SDKExtra} -mmacosx-version-min=10.8
+CC = $(shell xcrun -find clang) -arch ${ARCH} -mmacosx-version-min=10.8 -isysroot $(OSX_SDK)
CCFLAGS = -Wall
+LDFLAGS = -syslibroot $(OSX_SDK)
ASMFLAGS =
VERSION_NEW_LINKEDIT = -mmacosx-version-min=10.6
VERSION_OLD_LINKEDIT = -mmacosx-version-min=10.4
LD_NEW_LINKEDIT = -macosx_version_min 10.6
-CXX = $(shell xcrun -find clang++) -arch ${ARCH} ${SDKExtra}
+CXX = $(shell xcrun -find clang++) -arch ${ARCH} -isysroot $(OSX_SDK)
CXXFLAGS = -Wall -stdlib=libc++
-IOS_SDK = $(shell xcodebuild -sdk iphoneos.internal -version Path 2>/dev/null)
-
ifeq ($(ARCH),armv6)
LDFLAGS := -syslibroot $(IOS_SDK)
override FILEARCH = arm
# Verify that code and data references can be redirected via aliases.
#
-CC=/Volumes/my/src/puzzlebox/build/Debug+Asserts/bin/clang
-
run: all
all:
# No differences means this test passes
#
-CC=/Volumes/my/src/puzzlebox/build/Debug+Asserts/bin/clang
run: all
${CC} ${CCFLAGS} main.m -c -o main.o
libtool -static main.o -o libmain.a
${CC} ${CCFLAGS} libmain.a -o main -framework Foundation
- size -l main | grep ${IMAGE_INFO} | ${FAIL_IF_EMPTY}
+ size -m -l main | grep ${IMAGE_INFO} | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} main
clean:
all:
${CC} ${CCFLAGS} foo.c bar.c -o foo -framework CoreFoundation -dead_strip
- size -l foo | grep "__cfstring: ${CFSTRING_SIZE}" | ${FAIL_IF_EMPTY}
+ size -m -l foo | grep "__cfstring: ${CFSTRING_SIZE}" | ${FAIL_IF_EMPTY}
# now try with -fwritable-strings
${CC} ${CCFLAGS} foo.c bar.c -o foo_writable -framework CoreFoundation -dead_strip -fwritable-strings 2>/dev/null
- size -l foo_writable | grep "__cfstring: ${CFSTRING_SIZE}" | ${PASS_IFF_STDIN}
+ size -m -l foo_writable | grep "__cfstring: ${CFSTRING_SIZE}" | ${PASS_IFF_STDIN}
clean:
rm -rf foo foo_writable
all:
${CC} ${CCFLAGS} foo.m bar.m -o foo -framework CoreFoundation -dead_strip
- size -l foo | grep "__cfstring: ${CFSTRING_SIZE}" | ${FAIL_IF_EMPTY}
- size -l foo | grep "__ustring: ${USTRING_SIZE}" | ${FAIL_IF_EMPTY}
+ size -m -l foo | grep "__cfstring: ${CFSTRING_SIZE}" | ${FAIL_IF_EMPTY}
+ size -m -l foo | grep "__ustring: ${USTRING_SIZE}" | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} foo
clean:
all:
${CC} ${CCFLAGS} main.c custom.s -o main
- size -l main | grep __cstring | wc -l | grep 2 | ${FAIL_IF_EMPTY}
- size -l main | grep -A2 __MYSEG | grep __cstring | grep " 10 " | ${FAIL_IF_EMPTY}
+ size -m -l main | grep __cstring | wc -l | grep 2 | ${FAIL_IF_EMPTY}
+ size -m -l main | grep -A2 __MYSEG | grep __cstring | grep " 10 " | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} main
clean:
${CC} ${CCFLAGS} -c foo.s -o foo.o
${CC} ${CCFLAGS} -c bar.s -o bar.o
${LD} -arch ${ARCH} -r foo.o bar.o -o foobar.o
- size -l foobar.o | grep "(__TEXT, __cstring): 13" | ${FAIL_IF_EMPTY}
- size -l foobar.o | grep "(__TEXT, __mystring): 15" | ${FAIL_IF_EMPTY}
+ size -m -l foobar.o | grep "(__TEXT, __cstring): 13" | ${FAIL_IF_EMPTY}
+ size -m -l foobar.o | grep "(__TEXT, __mystring): 15" | ${FAIL_IF_EMPTY}
otool -lv foobar.o | grep -A10 __mystring | grep S_CSTRING_LITERALS | ${FAIL_IF_EMPTY}
${CC} ${CCFLAGS} foo.o bar.o -dynamiclib -o libfoobar.dylib
- size -l libfoobar.dylib | grep "__cstring: 13" | ${FAIL_IF_EMPTY}
- size -l libfoobar.dylib | grep "__mystring: 15" | ${FAIL_IF_EMPTY}
+ size -m -l libfoobar.dylib | grep "__cstring: 13" | ${FAIL_IF_EMPTY}
+ size -m -l libfoobar.dylib | grep "__mystring: 15" | ${FAIL_IF_EMPTY}
otool -lv libfoobar.dylib | grep -A10 __mystring | grep S_CSTRING_LITERALS | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} libfoobar.dylib
all:
${CC} ${CCFLAGS} main.c deadwood.c -dead_strip -o main-${ARCH}
- size -l main-${ARCH} | grep __PAGEZERO | ${FAIL_IF_EMPTY}
+ size -m -l main-${ARCH} | grep __PAGEZERO | ${FAIL_IF_EMPTY}
${FAIL_IF_BAD_MACHO} main-${ARCH}
nm -j main-${ARCH} | egrep 'dead_wood|dead_door' | ${FAIL_IF_STDIN}
${CC} ${CCFLAGS} -dynamiclib main.c deadwood.c -dead_strip -exported_symbols_list main.exp -o dylib-${ARCH}
--- /dev/null
+##
+# Copyright (c) 2016 Apple Inc. All rights reserved.
+#
+# @APPLE_LICENSE_HEADER_START@
+#
+# This file contains Original Code and/or Modifications of Original Code
+# as defined in and that are subject to the Apple Public Source License
+# Version 2.0 (the 'License'). You may not use this file except in
+# compliance with the License. Please obtain a copy of the License at
+# http://www.opensource.apple.com/apsl/ and read it before using this
+# file.
+#
+# The Original Code and all software distributed under the License are
+# distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+# EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+# INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+# Please see the License for the specific language governing rights and
+# limitations under the License.
+#
+# @APPLE_LICENSE_HEADER_END@
+##
+TESTROOT = ../..
+include ${TESTROOT}/include/common.makefile
+
+#
+# Test that -dirty_data_list will move alt-entry symbols
+##
+
+
+run: all
+
+all:
+ ${CC} ${CCFLAGS} -dynamiclib test.s -o libtest1.dylib -Wl,-dirty_data_list,1.dirty
+ ${FAIL_IF_BAD_MACHO} libtest1.dylib
+ nm -nm libtest1.dylib | grep __DATA_DIRTY | grep _sym1 | ${FAIL_IF_EMPTY}
+ nm -nm libtest1.dylib | grep __DATA_DIRTY | grep _sym2 | ${FAIL_IF_EMPTY}
+ ${CC} ${CCFLAGS} -dynamiclib test.s -o libtest2.dylib -Wl,-dirty_data_list,2.dirty
+ ${FAIL_IF_BAD_MACHO} libtest2.dylib
+ nm -nm libtest2.dylib | grep __DATA_DIRTY | grep _sym1 | ${FAIL_IF_EMPTY}
+ nm -nm libtest2.dylib | grep __DATA_DIRTY | grep _sym2 | ${FAIL_IF_EMPTY}
+ ${PASS_IFF} /usr/bin/true
+
+
+clean:
+
+ rm -rf libtest1.dylib libtest2.dylib
--- /dev/null
+
+
+
+
+
+ .data
+_foo: .quad 0,0,0
+
+# note: the .alt_entry means sym2 needs to stay pinned to sym1
+ .globl _sym1
+ .globl _sym2
+ .alt_entry _sym2
+
+_sym1: .quad 0,0
+_sym2: .quad 0,0
+
+ .globl _sym3
+_sym3: .quad 0,0
+
+
+ .subsections_via_symbols
+
+
all:
${CC} ${CCFLAGS} -gdwarf-2 hello.c -o dwarf-hello-${ARCH}
${FAIL_IF_BAD_MACHO} dwarf-hello-${ARCH}
- size -l dwarf-hello-${ARCH} | grep __DWARF | ${PASS_IFF_EMPTY}
+ size -m -l dwarf-hello-${ARCH} | grep __DWARF | ${PASS_IFF_EMPTY}
clean:
rm -rf dwarf-hello-*
all:
${CC} ${CCFLAGS} -gdwarf-2 hello.m -c -o hello.o
${LD} -r -S hello.o -o hello-r.o
- size -l hello-r.o | grep ${IMAGE_INFO} | ${PASS_IFF_STDIN}
+ size -m -l hello-r.o | grep ${IMAGE_INFO} | ${PASS_IFF_STDIN}
# verify .eh symbol is missing or is from bar.o (file 3)
grep '\[ 2\] __Z4funcv.eh' libfoobar.map | ${FAIL_IF_STDIN}
# verify no LSDA
- size -l libfoobar.dylib | grep __gcc_except_tab | ${PASS_IFF_EMPTY}
+ size -m -l libfoobar.dylib | grep __gcc_except_tab | ${PASS_IFF_EMPTY}
clean:
rm foo.o foo2.o bar.o libfoobar.map libfoobar.dylib
--- /dev/null
+
+TESTROOT = ../..
+include ${TESTROOT}/include/common.makefile
+
+#
+# Check that -ObjC works with LTO
+#
+
+run: all
+
+all:
+ ${CC} ${CCFLAGS} -flto foo.c -c -o foo.o
+ ${CC} ${CCFLAGS} -flto bar.m -c -o bar.o
+ ${CC} ${CCFLAGS} -flto baz.m -c -o baz.o
+ libtool -static foo.o bar.o baz.o -o libstuff.a
+ ${CC} ${CCFLAGS} -flto main.c -c -o main.o
+ ${CC} ${CCFLAGS} main.o -o main libstuff.a -framework Foundation -ObjC
+ nm main | grep _Bar | ${FAIL_IF_EMPTY}
+ nm main | grep MyCategory | grep doit | ${FAIL_IF_EMPTY}
+ ${PASS_IFF_GOOD_MACHO} main
+
+clean:
+ rm -rf main *.o libstuff.a main.o main
--- /dev/null
+
+#include <Foundation/Foundation.h>
+
+@interface Bar : NSObject
+@end
+
+@implementation Bar
+@end
+
--- /dev/null
+#include <Foundation/Foundation.h>
+
+@interface NSObject(MyCategory)
+- (void) doit;
+@end
+
+@implementation NSObject(MyCategory)
+- (void) doit
+{
+}
+@end
--- /dev/null
+
+extern void neverFindMe();
+
+__attribute__((constructor))
+void myinit()
+{
+ neverFindMe();
+}
--- /dev/null
+
+int main()
+{
+ return 0;
+}
+
all:
${CC} ${CCFLAGS} -flto main.m -c -o main.o
${CC} ${CCFLAGS} main.o -o main -framework Foundation
- size -l main | grep ${IMAGE_INFO} | ${FAIL_IF_EMPTY}
+ size -m -l main | grep ${IMAGE_INFO} | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} main
clean:
-Wl,-rename_section,__TEXT,__text,__ROM,__code \
-Wl,-rename_section,__TEXT,__eh_frame,__ROM,__eh_frame \
-Wl,-rename_section,__TEXT,__cstring,__ROM,__const
- size -l main.preload | grep __TEXT | ${FAIL_IF_STDIN}
- size -l main.preload | grep __DATA | ${FAIL_IF_STDIN}
+ size -m -l main.preload | grep __TEXT | ${FAIL_IF_STDIN}
+ size -m -l main.preload | grep __DATA | ${FAIL_IF_STDIN}
nm -m main.preload | grep __ROM | grep __code | grep _entry | ${FAIL_IF_EMPTY}
nm -m main.preload | grep __RAM | grep __vars | grep _mystring | ${FAIL_IF_EMPTY}
- size -l main.preload | grep __ROM | ${PASS_IFF_STDIN}
+ size -m -l main.preload | grep __ROM | ${PASS_IFF_STDIN}
-Wl,-rename_segment,__DATA,__RAM \
-Wl,-rename_section,__DATA,__data_extra,__RAM2,__data \
-Wl,-exported_symbol,_get
- size -l main.preload | grep __TEXT | ${FAIL_IF_STDIN}
- size -l main.preload | grep __DATA | ${FAIL_IF_STDIN}
+ size -m -l main.preload | grep __TEXT | ${FAIL_IF_STDIN}
+ size -m -l main.preload | grep __DATA | ${FAIL_IF_STDIN}
nm -m main.preload | grep __ROM | grep __text | grep _entry | ${FAIL_IF_EMPTY}
nm -m main.preload | grep __ROM | grep __text | grep _get | ${FAIL_IF_EMPTY}
nm -m main.preload | grep __RAM | grep __data | grep _mystring | ${FAIL_IF_EMPTY}
nm -m main.preload | grep __RAM2 | grep __data | grep _param | ${FAIL_IF_EMPTY}
- size -l main.preload | grep __ROM | ${PASS_IFF_STDIN}
+ size -m -l main.preload | grep __ROM | ${PASS_IFF_STDIN}
clean:
all:
${CC} ${CCFLAGS} main.c -o main -Wl,-merge_zero_fill_sections
- size -l main | grep __bss | ${FAIL_IF_STDIN}
- size -l main | grep __common | ${FAIL_IF_STDIN}
- size -l main | grep __zerofill | grep "offset 0" | ${FAIL_IF_EMPTY}
+ size -m -l main | grep __bss | ${FAIL_IF_STDIN}
+ size -m -l main | grep __common | ${FAIL_IF_STDIN}
+ size -m -l main | grep __zerofill | grep "offset 0" | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} main
clean:
all:
${CC} ${CCFLAGS} main.c -o main -Wl,-no_zero_fill_sections
- size -l main | grep __bss | grep "offset 0" | ${FAIL_IF_STDIN}
- size -l main | grep __common | grep "offset 0" | ${FAIL_IF_STDIN}
+ size -m -l main | grep __bss | grep "offset 0" | ${FAIL_IF_STDIN}
+ size -m -l main | grep __common | grep "offset 0" | ${FAIL_IF_STDIN}
${PASS_IFF_GOOD_MACHO} main
clean:
all-i386:
${CC} ${CCFLAGS} test.m -framework Foundation -o test1 -Wno-objc-root-class
- size -l test1 | grep __image_info | ${FAIL_IF_EMPTY}
+ size -m -l test1 | grep __image_info | ${FAIL_IF_EMPTY}
${CC} ${CCFLAGS} test.m -Wno-objc-root-class -fobjc-abi-version=2 -Wl,-objc_abi_version,2 -framework Foundation -o test2
- size -l test2 | grep __objc_imageinfo | ${FAIL_IF_EMPTY}
+ size -m -l test2 | grep __objc_imageinfo | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} test2
-
-
+
clean:
rm -rf test1 test2
--- /dev/null
+##
+# Copyright (c) 2010 Apple Inc. All rights reserved.
+#
+# @APPLE_LICENSE_HEADER_START@
+#
+# This file contains Original Code and/or Modifications of Original Code
+# as defined in and that are subject to the Apple Public Source License
+# Version 2.0 (the 'License'). You may not use this file except in
+# compliance with the License. Please obtain a copy of the License at
+# http://www.opensource.apple.com/apsl/ and read it before using this
+# file.
+#
+# The Original Code and all software distributed under the License are
+# distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+# EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+# INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+# Please see the License for the specific language governing rights and
+# limitations under the License.
+#
+# @APPLE_LICENSE_HEADER_END@
+##
+TESTROOT = ../..
+include ${TESTROOT}/include/common.makefile
+SHELL = bash
+
+#
+# Verify handling of object files with mismatched category class properties.
+#
+
+LD_R = ${LD} -arch ${ARCH} -r
+
+# check output of objcimageinfo
+FAIL_IF_OLD = grep -v has-category-class-properties | ${FAIL_IF_STDIN}
+FAIL_IF_NEW = grep has-category-class-properties | ${FAIL_IF_STDIN}
+REALLY_FAIL_IF_NEW = grep has-category-class-properties | ${FAIL_IF_STDIN}
+
+# check diagnostics from ld
+FAIL_IF_DIAGNOSTICS = ${FAIL_IF_STDIN}
+FAIL_IF_NO_DIAGNOSTICS = egrep 'warning.*category metadata' | ${FAIL_IF_EMPTY}
+
+# Hack: Old ABI doesn't need the has-category-class-properties bit.
+# There should instead be no diagnostics and no "OLD" output anywhere.
+ifeq (${ARCH},i386)
+ FAIL_IF_NEW = ${FAIL_IF_OLD}
+ FAIL_IF_NO_DIAGNOSTICS = ${FAIL_IF_DIAGNOSTICS}
+ # REALLY_FAIL_IF_NEW is unchanged to sanity-check objcimageinfo itself.
+endif
+
+all:
+ # Generate files with has-category-class-properties bit ("NEW").
+ ${CC} ${CCFLAGS} -c class.m -o class.o
+ ${CC} ${CCFLAGS} -c -DCATEGORY=1 -DCLASS_PROPERTY=1 cat.m -o cat-with-class-prop.o
+ ${CC} ${CCFLAGS} -c -DCATEGORY=1 -DCLASS_PROPERTY=0 cat.m -o cat-without-class-prop.o
+ ${CC} ${CCFLAGS} -c -DCATEGORY=0 -DCLASS_PROPERTY=0 cat.m -o nocat.o
+ ${CC} ${CCFLAGS} -c -DCATEGORY=0 -DCLASS_PROPERTY=0 -x c cat.m -o noobjc.o
+ ${OBJCIMAGEINFO} class.o cat-with-class-prop.o cat-without-class-prop.o nocat.o | ${FAIL_IF_OLD}
+ # nocat.o must have objc_image_info; noobjc.o must not
+ size -m -l nocat.o | egrep '(__image_info|__objc_imageinfo)' | ${FAIL_IF_EMPTY}
+ size -m -l noobjc.o | egrep '(__image_info|__objc_imageinfo)' | ${FAIL_IF_STDIN}
+
+ # Generate files without has-category-class-properties bit ("OLD").
+ cp -f cat-without-class-prop.o old-cat.o
+ cp -f nocat.o old-nocat.o
+ cp -f class.o old-class.o
+ ${OBJCIMAGEINFO} -has-category-class-properties old-cat.o old-class.o old-nocat.o | ${REALLY_FAIL_IF_NEW}
+
+ # Link each pair of class and category.
+ # Verify diagnostics and output's has-category-class-properties bit.
+
+ ############
+ # Class: NEW
+
+ # Category: not OLD. No diagnostics. Result should be marked NEW.
+ # Category: OLD but no category. No diagnostics. Result should be marked NEW.
+ ${LD_R} class.o cat-with-class-prop.o -o class__cat-with-class-prop.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${LD_R} class.o cat-without-class-prop.o -o class__cat-without-class-prop.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${LD_R} class.o nocat.o -o class__nocat.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${LD_R} class.o noobjc.o -o class__noobjc.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${LD_R} class.o old-nocat.o -o class__old-nocat.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} class__cat-with-class-prop.o | ${FAIL_IF_OLD}
+ ${OBJCIMAGEINFO} class__cat-without-class-prop.o | ${FAIL_IF_OLD}
+ ${OBJCIMAGEINFO} class__nocat.o | ${FAIL_IF_OLD}
+ ${OBJCIMAGEINFO} class__noobjc.o | ${FAIL_IF_OLD}
+ ${OBJCIMAGEINFO} class__old-nocat.o | ${FAIL_IF_OLD}
+
+ # Category: OLD. No diagnostics. Result should be marked OLD.
+ ${LD_R} class.o old-cat.o -o class__old-cat.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} class__old-cat.o | ${FAIL_IF_NEW}
+
+ # Two categories: OLD + NEW with class properties. Has diagnostics. Result should be marked OLD.
+ ${LD_R} class.o old-cat.o cat-with-class-prop.o -o class__old-cat__cat-with-class-prop.o 2>&1 | ${FAIL_IF_NO_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} class__old-cat__cat-with-class-prop.o | ${FAIL_IF_NEW}
+
+ # Two categories: OLD + NEW without class properties. No diagnostics. Result should be marked OLD.
+ ${LD_R} class.o old-cat.o cat-without-class-prop.o -o class__old-cat__cat-without-class-prop.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} class__old-cat__cat-without-class-prop.o | ${FAIL_IF_NEW}
+
+
+ ############
+ # Class: OLD
+
+ # Category: OLD. No diagnostics. Result should be marked OLD.
+ ${LD_R} old-class.o old-cat.o -o old-class__old-cat.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} old-class__old-cat.o | ${FAIL_IF_NEW}
+
+ # Category: none. No diagnostics. Result should be marked NEW.
+ ${LD_R} old-class.o nocat.o -o old-class__nocat.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${LD_R} old-class.o noobjc.o -o old-class__noobjc.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${LD_R} old-class.o old-nocat.o -o old-class__old-nocat.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} old-class__nocat.o | ${FAIL_IF_OLD}
+ ${OBJCIMAGEINFO} old-class__noobjc.o | ${FAIL_IF_OLD}
+ ${OBJCIMAGEINFO} old-class__old-nocat.o | ${FAIL_IF_OLD}
+
+ # Category: NEW. No diagnostics. Result should be marked NEW.
+ ${LD_R} old-class.o cat-without-class-prop.o -o old-class__cat-without-class-prop.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${LD_R} old-class.o cat-with-class-prop.o -o old-class__cat-with-class-prop.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} old-class__cat-without-class-prop.o | ${FAIL_IF_OLD}
+ ${OBJCIMAGEINFO} old-class__cat-with-class-prop.o | ${FAIL_IF_OLD}
+
+ # Two categories: OLD + NEW with class properties. Has diagnostics. Result should be marked OLD.
+ ${LD_R} old-class.o old-cat.o cat-with-class-prop.o -o old-class__old-cat__cat-with-class-prop.o 2>&1 | ${FAIL_IF_NO_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} old-class__old-cat__cat-with-class-prop.o | ${FAIL_IF_NEW}
+
+ # Two categories: OLD + NEW without class properties. No diagnostics. Result should be marked OLD.
+ ${LD_R} old-class.o old-cat.o cat-without-class-prop.o -o old-class__old-cat__cat-without-class-prop.o 2>&1 | ${FAIL_IF_DIAGNOSTICS}
+ ${OBJCIMAGEINFO} old-class__old-cat__cat-without-class-prop.o | ${FAIL_IF_NEW}
+
+ ${PASS_IFF} true
+
+clean:
+ rm -rf *.o
--- /dev/null
+#if CATEGORY
+
+#include <Foundation/Foundation.h>
+
+@interface Foo : NSObject
+@end
+
+@interface Foo(mycat)
+@property(readonly) int instanceProperty;
+#if CLASS_PROPERTY
+@property(class, readonly) int classProperty;
+#endif
+@end
+
+@implementation Foo(mycat)
+-(int) instanceProperty { return 0; }
++(int) classProperty { return 0; }
+@end
+
+#else
+
+int x = 0;
+
+#endif
--- /dev/null
+#include <Foundation/Foundation.h>
+
+@interface Foo : NSObject
+@end
+
+
+@implementation Foo
+@end
+
#
# Verify optimization where categories are merged into classes
#
-OPTIONS =
-
ifeq ($(ARCH),i386)
- OPTIONS = -mios-simulator-version-min=6.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk/
+ ALL = all-noopt
+else
+ ALL = all-opt
endif
-all: all-${ARCH}
+all: ${ALL}
-all-ppc:
+# For platforms that do not perform category optimization
+all-noopt:
${PASS_IFF} true
-all-i386: all-rest
-all-x86_64: all-rest
-all-armv6: all-rest
-all-armv7: all-rest
-
-all-rest:
+# For platforms that optimize categories
+all-opt:
# check optimization of category methods
${CC} ${CCFLAGS} ${OPTIONS} -dynamiclib foo.m cat1.m -framework Foundation -o libfoo.dylib
- size -l libfoo.dylib | grep "__objc_catlist:" | ${FAIL_IF_EMPTY}
+ size -m -l libfoo.dylib | grep "__objc_catlist:" | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} libfoo.dylib
-
-
+
clean:
rm -rf libfoo.dylib
#
# Verify optimization where categories are merged into classes
#
-OPTIONS =
ifeq ($(ARCH),i386)
- OPTIONS = -mios-simulator-version-min=6.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk/
+ ALL = all-noopt
+else
+ ALL = all-opt
endif
-ifeq ($(ARCH),arm)
- OPTIONS = -isysroot=${IOS_SDK}
-endif
-
-all: all-${ARCH}
+all: ${ALL}
-all-ppc:
+# For platforms that do not perform category optimization
+all-noopt:
${PASS_IFF} true
-all-i386: all-rest
-all-x86_64: all-rest
-all-armv6: all-rest
-all-armv7: all-rest
-
-all-rest:
+# For platforms that optimize categories
+all-opt:
# check optimization can be turned off
${CC} ${CCFLAGS} ${OPTIONS} -dynamiclib foo.m cat1.m cat2.m -framework Foundation -Wl,-no_objc_category_merging -o libno.dylib
- size -l libno.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_STDIN}
+ size -m -l libno.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_STDIN}
otool -ov libno.dylib | grep -A17 __objc_classlist | grep -A16 '_OBJC_CLASS_$$_Foo' | grep "count 1" | ${FAIL_IF_EMPTY}
# check optimization of category methods
${CC} ${CCFLAGS} ${OPTIONS} -dynamiclib foo.m cat1.m cat2.m -framework Foundation -o libfoo.dylib
- size -l libfoo.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_EMPTY}
+ size -m -l libfoo.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_EMPTY}
otool -ov libfoo.dylib | grep -A20 __objc_classlist | grep -A20 '_OBJC_CLASS_$$_Foo' | grep "count 4" | ${FAIL_IF_EMPTY}
# check optimization of protocol and category methods
${CC} ${CCFLAGS} ${OPTIONS} -dynamiclib foo.m cat1.m cat2.m -DPROTOCOLS -framework Foundation -o libfoo2.dylib
- size -l libfoo2.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_EMPTY}
+ size -m -l libfoo2.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_EMPTY}
otool -ov libfoo2.dylib | grep -A20 __objc_classlist | grep -A20 '_OBJC_CLASS_$$_Foo' | grep "count 6" | ${FAIL_IF_EMPTY}
# check optimization of properties and category methods
${CC} ${CCFLAGS} ${OPTIONS} -dynamiclib foo.m cat1.m cat2.m -DPROPERTIES -framework Foundation -o libfoo3.dylib
- size -l libfoo3.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_EMPTY}
+ size -m -l libfoo3.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_EMPTY}
otool -ov libfoo3.dylib | grep -A20 __objc_classlist | grep -A20 '_OBJC_CLASS_$$_Foo' | grep "count 6" | ${FAIL_IF_EMPTY}
# check optimization of category methods and no base methods
${CC} ${CCFLAGS} ${OPTIONS} -dynamiclib foo.m cat1.m cat2.m -DNO_BASE_METHODS -framework Foundation -o libfoo4.dylib
- size -l libfoo4.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_EMPTY}
+ size -m -l libfoo4.dylib | grep "__objc_catlist: 0" | ${FAIL_IF_EMPTY}
otool -ov libfoo4.dylib | grep -A20 __objc_classlist | grep -A20 '_OBJC_CLASS_$$_Foo' | grep "count 3" | ${FAIL_IF_EMPTY}
otool -ov libfoo4.dylib | grep -A20 "Meta Class" | grep "count 2" | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} libfoo3.dylib
-
-
-
+
clean:
rm -rf lib*.dylib
#if PROPERTIES
@property(readonly) int property1;
@property(readonly) int property2;
+ @property(class,readonly) int property3;
+ @property(class,readonly) int property4;
#endif
@end
#if PROPERTIES
-(int) property1 { return 0; }
-(int) property2 { return 0; }
+ +(int) property3 { return 0; }
+ +(int) property4 { return 0; }
#endif
@end
#
# Verify optimization in which categories are merged into classes
#
-OPTIONS =
-
ifeq ($(ARCH),i386)
- OPTIONS = -mios-simulator-version-min=6.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk/
+ ALL = all-noopt
+else
+ ALL = all-opt
endif
-all: all-${FILEARCH}
+all: ${ALL}
-all-ppc:
+# For platforms that do not perform category optimization
+all-noopt:
${PASS_IFF} true
-all-i386: all-rest
-all-x86_64: all-rest
-all-arm: all-rest
-
-all-rest:
+# For platforms that optimize categories
+all-opt:
${CC} ${CCFLAGS} ${OPTIONS} -dynamiclib foo.m cat.m -DOVERRIDE_CLASS=1 -framework Foundation -o libfoo.dylib 2> warnings1.txt
grep warning warnings1.txt | grep instance_method | ${FAIL_IF_EMPTY}
grep warning warnings1.txt | grep class_method | ${FAIL_IF_EMPTY}
grep warning warnings2.txt | grep instance_method_fromcat | ${FAIL_IF_EMPTY}
grep warning warnings2.txt | grep class_method_fromcat | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} libfoo2.dylib
-
+
clean:
rm -rf lib*.dylib warnings*.txt
#
# Verify -alias works with ObjC classes
#
-CLASS_NAME_FOO = .objc_class_name_Foo
-ifeq (${ARCH},x86_64)
- CLASS_NAME_FOO = '_OBJC_CLASS_$$_Foo'
-endif
-ifeq (${FILEARCH},arm)
- CLASS_NAME_FOO = '_OBJC_CLASS_$$_Foo'
+CLASS_NAME_FOO = '_OBJC_CLASS_$$_Foo'
+ifeq (${ARCH},i386)
+ CLASS_NAME_FOO = .objc_class_name_Foo
endif
${DYLDINFO} -export test | grep ${CLASS_NAME_FOO} | awk '{ print $$1}' > foo.addr
${DYLDINFO} -export test | grep _MagicName | awk '{ print $$1}' > magic.addr
${PASS_IFF} diff foo.addr magic.addr
-
+
clean:
rm -rf test foo.addr magic.addr
SHELL = bash # use bash shell so we can redirect just stderr
+#
+# Validate that the linker catches illegal combinations of .o files
+# compiled with different GC settings.
+#
-IMAGE_INFO = "__image_info"
+IMAGE_INFO = "__objc_imageinfo"
+ifeq ($(ARCH),i386)
+ IMAGE_INFO = "__image_info"
+endif
+ifeq ($(ARCH),i386)
+ ALL = all-gc
+else
ifeq ($(ARCH),x86_64)
- IMAGE_INFO = "__objc_imageinfo"
+ ALL = all-gc
+else
+ ALL = all-nogc
+endif
endif
-test: test-${FILEARCH}
-
-test-i386: test-macosx
-test-x86_64: test-macosx
-test-arm: test-good
+all: ${ALL}
-#
-# Validate that the linker catches illegal combinations of .o files
-# compiled with different GC settings.
-#
+# For platforms that do not support GC.
+all-nogc:
+ ${PASS_IFF} true
-test-macosx:
+# For platforms that support GC.
+all-gc:
${CC} ${CCFLAGS} foo.m -c -o foo.o
${FAIL_IF_BAD_OBJ} foo.o
- ${CC} ${CCFLAGS} foo.m -c -o foo-gc.o -fobjc-gc
- ${FAIL_IF_BAD_OBJ} foo-gc.o
-
- ${CC} ${CCFLAGS} foo.m -c -o foo-gc-only.o -fobjc-gc-only
- ${FAIL_IF_BAD_OBJ} foo-gc-only.o
-
${CC} ${CCFLAGS} bar.m -c -o bar.o
${FAIL_IF_BAD_OBJ} bar.o
- ${CC} ${CCFLAGS} bar.m -c -o bar-gc.o -fobjc-gc
- ${FAIL_IF_BAD_OBJ} bar-gc.o
+ # clang no longer builds GC so we create fake GC object files instead.
+
+ cp -f foo.o foo-gc.o
+ ${OBJCIMAGEINFO} +supports-gc foo-gc.o
- ${CC} ${CCFLAGS} bar.m -c -o bar-gc-only.o -fobjc-gc-only
- ${FAIL_IF_BAD_OBJ} bar-gc-only.o
+ cp -f foo.o foo-gc-only.o
+ ${OBJCIMAGEINFO} +supports-gc +requires-gc foo-gc-only.o
+
+ cp -f bar.o bar-gc.o
+ ${OBJCIMAGEINFO} +supports-gc bar-gc.o
+
+ cp -f bar.o bar-gc-only.o
+ ${OBJCIMAGEINFO} +supports-gc +requires-gc bar-gc-only.o
# check RR + RR -> RR
${CC} ${CCFLAGS} foo.o bar.o runtime.c -dynamiclib -o libfoobar.dylib -framework Foundation
# check GC/RR + GC/RR -> GC/RR
${CC} ${CCFLAGS} foo-gc.o bar-gc.o runtime.c -dynamiclib -o libfoobar.dylib -framework Foundation
${FAIL_IF_BAD_MACHO} libfoobar.dylib
- otool -o libfoobar.dylib | grep -A4 _image | grep flags | grep 0x2 | ${FAIL_IF_EMPTY}
+ ${OBJCIMAGEINFO} libfoobar.dylib | grep supports-gc | ${FAIL_IF_EMPTY}
# check GC + GC -> GC
${CC} ${CCFLAGS} foo-gc-only.o bar-gc-only.o runtime.c -dynamiclib -o libfoobar.dylib -framework Foundation
${FAIL_IF_BAD_MACHO} libfoobar.dylib
- otool -o libfoobar.dylib | grep -A4 _image | grep flags | grep 0x6 | ${FAIL_IF_EMPTY}
+ ${OBJCIMAGEINFO} libfoobar.dylib | grep 'supports-gc requires-gc' | ${FAIL_IF_EMPTY}
# check RR + GC/RR -> RR
${CC} ${CCFLAGS} foo.o bar-gc.o runtime.c -dynamiclib -o libfoobar.dylib -framework Foundation
${FAIL_IF_BAD_MACHO} libfoobar.dylib
- otool -o libfoobar.dylib | grep -A4 _image | grep flags | grep 0x[26] | ${FAIL_IF_STDIN}
+ ${OBJCIMAGEINFO} libfoobar.dylib | grep gc | ${FAIL_IF_STDIN}
# check GC/RR + RR -> RR
${CC} ${CCFLAGS} bar-gc.o foo.o runtime.c -dynamiclib -o libfoobar.dylib -framework Foundation
${FAIL_IF_BAD_MACHO} libfoobar.dylib
- otool -o libfoobar.dylib | grep -A4 _image | grep flags | grep 0x[26] | ${FAIL_IF_STDIN}
+ ${OBJCIMAGEINFO} libfoobar.dylib | grep gc | ${FAIL_IF_STDIN}
# check GC + GC/RR -> GC
${CC} ${CCFLAGS} foo-gc-only.o bar-gc.o runtime.c -dynamiclib -o libfoobar.dylib -framework Foundation
${FAIL_IF_BAD_MACHO} libfoobar.dylib
- otool -o libfoobar.dylib | grep -A4 _image | grep flags | grep 0x6 | ${FAIL_IF_EMPTY}
+ ${OBJCIMAGEINFO} libfoobar.dylib | grep 'supports-gc requires-gc' | ${FAIL_IF_EMPTY}
# check RR + GC -> error
${FAIL_IF_SUCCESS} ${CC} ${CCFLAGS} foo.o bar-gc-only.o runtime.c -dynamiclib -o libfoobar.dylib -framework Foundation 2> fail.log
# check cmd line GC/RR, GC/RR + RR -> error
${FAIL_IF_SUCCESS} ${CC} ${CCFLAGS} foo-gc.o foo.o runtime.c -dynamiclib -o libfoobar.dylib -Wl,-objc_gc -framework Foundation 2> fail.log
-
+
# check GC/RR + compaction
${CC} ${CCFLAGS} foo-gc.o bar-gc.o runtime.c -dynamiclib -Wl,-objc_gc_compaction -o libfoobar.dylib -framework Foundation
- otool -o libfoobar.dylib | grep -A4 _image | grep flags | grep 0x12 | ${FAIL_IF_EMPTY}
+ ${OBJCIMAGEINFO} libfoobar.dylib | grep 0x12 | ${FAIL_IF_EMPTY}
# check GC + compaction
${CC} ${CCFLAGS} foo-gc-only.o bar-gc-only.o runtime.c -dynamiclib -Wl,-objc_gc_compaction -o libfoobar.dylib -framework Foundation
- otool -o libfoobar.dylib | grep -A4 _image | grep flags | grep 0x16 | ${FAIL_IF_EMPTY}
+ ${OBJCIMAGEINFO} libfoobar.dylib | grep 0x16 | ${FAIL_IF_EMPTY}
# none + GC/RR-dylib -> none
${CC} ${CCFLAGS} foo-gc.o runtime.c -dynamiclib -o libfoo.dylib -framework Foundation
${CC} ${CCFLAGS} none.c libfoo.dylib -dynamiclib -o libnone.dylib -framework Foundation
- size -l libnone.dylib | grep ${IMAGE_INFO} | ${FAIL_IF_STDIN}
+ size -m -l libnone.dylib | grep ${IMAGE_INFO} | ${FAIL_IF_STDIN}
# none + GC-dylib -> none
${CC} ${CCFLAGS} foo-gc-only.o runtime.c -dynamiclib -o libfoo.dylib -framework Foundation
${CC} ${CCFLAGS} none.c libfoo.dylib -dynamiclib -o libnone.dylib -framework Foundation
- size -l libnone.dylib | grep ${IMAGE_INFO} | ${FAIL_IF_STDIN}
+ size -m -l libnone.dylib | grep ${IMAGE_INFO} | ${FAIL_IF_STDIN}
# none + RR-dylib -> none
${CC} ${CCFLAGS} foo.o runtime.c -dynamiclib -o libfoo.dylib -framework Foundation
${CC} ${CCFLAGS} none.c libfoo.dylib -dynamiclib -o libnone.dylib -framework Foundation
- size -l libnone.dylib | grep ${IMAGE_INFO} | ${FAIL_IF_STDIN}
+ size -m -l libnone.dylib | grep ${IMAGE_INFO} | ${FAIL_IF_STDIN}
# check RR + GC-dylib -> error
${CC} ${CCFLAGS} foo-gc-only.o runtime.c -dynamiclib -o libfoo.dylib -framework Foundation
${PASS_IFF} true
-test-good:
- ${PASS_IFF} true
-
clean:
rm -rf foo*.o bar*.o libfoobar.dylib fail.log libfoo.dylib libnone.dylib
#
#
-SELECTOR_REFS = "__OBJC,__message_refs"
+SELECTOR_REFS = "__DATA,__objc_selrefs"
-ifeq ($(ARCH),x86_64)
- SELECTOR_REFS = "__DATA,__objc_selrefs"
-endif
-ifeq ($(ARCH),armv6)
- SELECTOR_REFS = "__DATA,__objc_selrefs"
+ifeq ($(ARCH),i386)
+ SELECTOR_REFS = "__OBJC,__message_refs"
endif
${OBJECTDUMP} -no_content test-r.o | grep -B3 -A6 ${SELECTOR_REFS} > test-r.dump
diff test.dump test-r.dump | ${PASS_IFF_EMPTY}
-
+
clean:
rm -rf test.o test.dump test-r.o test-r.dump
run: all
all:
- mkdir -p hide
+ mkdir -p hide rhide
${CC} ${CCFLAGS} -dynamiclib foo.c -install_name '@loader_path/libfoo.dylib' -o hide/libfoo.dylib
${FAIL_IF_BAD_MACHO} hide/libfoo.dylib
${CC} ${CCFLAGS} -dynamiclib bar.c -o hide/libbar.dylib -install_name '@executable_path/hide/libbar.dylib'
${FAIL_IF_BAD_MACHO} hide/libbar.dylib
- ${CC} ${CCFLAGS} -dynamiclib wrap.c -o hide/libwrap.dylib -Wl,-reexport-lfoo -Wl,-reexport-lbar -Lhide
+ ${CC} ${CCFLAGS} -dynamiclib baz.c -o rhide/libbaz.dylib -install_name '@rpath/libbaz.dylib'
+ ${FAIL_IF_BAD_MACHO} hide/libbar.dylib
+ ${CC} ${CCFLAGS} -dynamiclib wrap.c -o hide/libwrap.dylib -Wl,-reexport-lfoo -Wl,-reexport-lbar -Lhide -Wl,-rpath,@loader_path/../rhide -Wl,-reexport-lbaz -Lrhide
${FAIL_IF_BAD_MACHO} hide/libwrap.dylib
${CC} ${CCFLAGS} main.c -o main hide/libwrap.dylib
${CC} ${CCFLAGS} main.c -dynamiclib -o libmain.dylib hide/libwrap.dylib -Wl,-executable_path,`pwd`/main
clean:
- rm -rf hide libbar.dylib libfoo.dylib libwrap.dylib main libmain.dylib
+ rm -rf hide rhide main libmain.dylib
--- /dev/null
+
+int baz(void)
+{
+ return 1;
+}
all:
${CC} ${CCFLAGS} main.c -o main -sectcreate __MYSEG __mysect sect_content -dead_strip
- size -l main | grep __MYSEG | ${FAIL_IF_EMPTY}
- size -l main | grep __mysect | ${FAIL_IF_EMPTY}
+ size -m -l main | grep __MYSEG | ${FAIL_IF_EMPTY}
+ size -m -l main | grep __mysect | ${FAIL_IF_EMPTY}
${PASS_IFF_GOOD_MACHO} main
clean:
all:
${CC} ${CCFLAGS} hello.c -o hello
- size -l hello | grep __IMPORT | ${FAIL_IF_STDIN}
+ size -m -l hello | grep __IMPORT | ${FAIL_IF_STDIN}
${CC} ${CCFLAGS} hello.c -dynamiclib -o libhello.dylib
- size -l libhello.dylib | grep __IMPORT | ${FAIL_IF_STDIN}
+ size -m -l libhello.dylib | grep __IMPORT | ${FAIL_IF_STDIN}
${PASS_IFF_GOOD_MACHO} hello
clean:
${CC} ${CCFLAGS} all.o -dynamiclib -o dylib2
otool -X -s ${POINTER_SEGMENT} ${POINTER_SECTION} dylib1 >dylib1.pointers
otool -X -s ${POINTER_SEGMENT} ${POINTER_SECTION} dylib2 >dylib2.pointers
- size -l dylib1 | grep __IMPORT | ${FAIL_IF_STDIN}
- size -l dylib2 | grep __IMPORT | ${FAIL_IF_STDIN}
+ size -m -l dylib1 | grep __IMPORT | ${FAIL_IF_STDIN}
+ size -m -l dylib2 | grep __IMPORT | ${FAIL_IF_STDIN}
${PASS_IFF} diff dylib1.pointers dylib2.pointers
clean:
--- /dev/null
+##
+# Copyright (c) 2016 Apple Inc. All rights reserved.
+#
+# @APPLE_LICENSE_HEADER_START@
+#
+# This file contains Original Code and/or Modifications of Original Code
+# as defined in and that are subject to the Apple Public Source License
+# Version 2.0 (the 'License'). You may not use this file except in
+# compliance with the License. Please obtain a copy of the License at
+# http://www.opensource.apple.com/apsl/ and read it before using this
+# file.
+#
+# The Original Code and all software distributed under the License are
+# distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+# EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+# INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+# Please see the License for the specific language governing rights and
+# limitations under the License.
+#
+# @APPLE_LICENSE_HEADER_END@
+##
+TESTROOT = ../..
+include ${TESTROOT}/include/common.makefile
+
+#
+# Check interaction of -section_rename and -move_to_r[ow]_segment
+#
+
+run: all
+
+all:
+ ${CC} ${CCFLAGS} main.c -c -o main.o
+ ${CC} ${CCFLAGS} foo1.c -c -o foo1.o
+ ${CC} ${CCFLAGS} foo2.c -c -o foo2.o
+ libtool -static foo1.o foo2.o -o libfoo.a
+ ${LD} -arch ${ARCH} main.o -force_load libfoo.a \
+ -preload -o main.preload \
+ -e _main -trace_symbol_layout \
+ -move_to_ro_segment __TMP spec.list \
+ -rename_section __TMP __text __TEXT spec \
+ -move_to_ro_segment __TMP2 foo.list \
+ -rename_section __TMP2 __text __TEXT libfoo \
+ -move_to_rw_segment __TMPD hot.list \
+ -rename_section __TMPD __data __DATA hot \
+ -rename_section __TMPD __common __DATA hot \
+ > placement.log
+ nm -m main.preload | grep _s1 | grep __TEXT | grep spec | ${FAIL_IF_EMPTY}
+ nm -m main.preload | grep _s2 | grep __TEXT | grep spec | ${FAIL_IF_EMPTY}
+ nm -m main.preload | grep _def | grep __DATA | grep hot | ${FAIL_IF_EMPTY}
+ nm -m main.preload | grep _com3 | grep __DATA | grep hot | ${FAIL_IF_EMPTY}
+ nm -m main.preload | grep _foo1 | grep __TEXT | grep libfoo | ${FAIL_IF_EMPTY}
+ nm -m main.preload | grep _foo2 | grep __TEXT | grep libfoo | ${FAIL_IF_EMPTY}
+ ${PASS_IFF} true
+
+clean:
+ rm -f main.preload main.o foo1.o foo2.o libfoo.a placement.log
--- /dev/null
+libfoo.a(*.o):*
+
--- /dev/null
+void foo1() {}
--- /dev/null
+void foo2() {}
--- /dev/null
+_def
+_com3
+
+
--- /dev/null
+
+void mm()
+{
+}
+
+void s1() {
+ mm();
+}
+
+void s2() {
+ mm();
+}
+
+int main()
+{
+ s1();
+ s2();
+ return 0;
+}
+
+
+int abc = 10;
+int def = 20;
+int ghi = 30;
+
+int com1;
+int com2;
+int com3;
+int com4;
+
--- /dev/null
+_s1
+_s2
+
+
nm -m main.preload | grep _foo | grep __ROM1 | grep __text | ${FAIL_IF_EMPTY}
nm -m main.preload | grep _s1 | grep __ROM1 | grep __text | ${FAIL_IF_EMPTY}
nm -m main.preload | grep _mylocal | grep __ROM1 | grep __text | ${FAIL_IF_EMPTY}
- size -l main.preload | grep __cstring | ${FAIL_IF_STDIN}
- size -l main.preload | grep mycstrings | ${FAIL_IF_EMPTY}
- size -l main.preload | grep __TEXT | ${FAIL_IF_STDIN}
+ size -m -l main.preload | grep __cstring | ${FAIL_IF_STDIN}
+ size -m -l main.preload | grep mycstrings | ${FAIL_IF_EMPTY}
+ size -m -l main.preload | grep __TEXT | ${FAIL_IF_STDIN}
nm -m main.preload | grep _mm | grep __ROM3 | grep __text | ${FAIL_IF_EMPTY}
nm -m main.preload | grep _main | grep __ROM3 | grep __text | ${FAIL_IF_EMPTY}
nm -m main.preload | grep _abc | grep __RAM1 | ${FAIL_IF_EMPTY}
nm -m main.preload | grep _com | grep __RAM1 | ${FAIL_IF_EMPTY}
- size -l main.preload | grep __DATA | ${FAIL_IF_STDIN}
+ size -m -l main.preload | grep __DATA | ${FAIL_IF_STDIN}
nm -m main.preload | grep _def | grep __RAM2 | grep mydata | ${FAIL_IF_EMPTY}
nm -m main.preload | grep _ghi | grep __RAM2 | grep mydata | ${FAIL_IF_EMPTY}
${PASS_IFF} true
// foo is an exported thread local variable
-__thread int foo = 6;
+__thread int foo[1024];
// _bar is an exported regular variable
int bar = 5;
*/
#if USE_FOO_WRONG
- extern int foo;
+ extern int foo[];
#elif USE_BAR_WRONG
extern __thread int bar;
#else
- extern __thread int foo;
+ extern __thread int foo[];
#endif
#elif USE_BAR_WRONG
bar = 1;
#else
- foo = 1;
+ foo[0] = 1;
#endif
return 0;
}
${CC} ${CCFLAGS} withnul.s -c -o withnul.o
${CC} ${CCFLAGS} other.s -c -o other.o
${LD} -r -arch ${ARCH} withnul.o other.o -o all.o
- size -l all.o | grep "__ustring): 44" | ${PASS_IFF_STDIN}
+ size -m -l all.o | grep "__ustring): 44" | ${PASS_IFF_STDIN}
clean:
--- /dev/null
+
+TESTROOT = ../..
+include ${TESTROOT}/include/common.makefile
+
+#
+# Tests -no_weak_imports
+#
+
+
+run: all
+
+all:
+ # check weak_import works and triggers error with -no_weak_imports
+ ${CC} ${CCFLAGS} -dynamiclib foo.c -o libfoo.dylib
+ ${FAIL_IF_BAD_MACHO} libfoo.dylib
+ ${CC} ${CCFLAGS} main.c libfoo.dylib -o main1a
+ nm -m main1a | grep _foo | grep weak | ${FAIL_IF_STDIN}
+ ${CC} ${CCFLAGS} main.c libfoo.dylib -o main1b -DMAKE_FOO_WEAK_IMPORT=1
+ nm -m main1b | grep _foo | grep weak | ${FAIL_IF_EMPTY}
+ ${CC} ${CCFLAGS} main.c libfoo.dylib -o main1c -DMAKE_FOO_WEAK_IMPORT=1 -Wl,-no_weak_imports 2>main1c.errors || true
+ grep 'ld:' main1c.errors | grep _foo | ${FAIL_IF_EMPTY}
+ # check $ld$sxx works with -no_weak_imports
+ ${CC} ${CCFLAGS} main2.c libfoo.dylib -o main2a -Wl,-no_weak_imports
+ ${CC} ${CCFLAGS} main2.c libfoo.dylib -o main2b -Wl,-no_weak_imports -mmacosx-version-min=10.7 2>main2b.errors || true
+ grep _bar main2b.errors | ${FAIL_IF_EMPTY}
+ ${PASS_IFF_GOOD_MACHO} main1a
+
+clean:
+ rm -rf libfoo.dylib main1a main1b main1c main1c.errors main2a main2b main2b.errors
--- /dev/null
+
+
+
+void foo() {}
+
+
+#define WEAK_IMPORT_FOR_10_7(sym) \
+ extern const char sym##_tmp __asm("$ld$weak$os10.7$_" #sym ); const char sym##_tmp = 0;
+
+void bar() {}
+WEAK_IMPORT_FOR_10_7(bar)
+
--- /dev/null
+
+extern void foo()
+#if MAKE_FOO_WEAK_IMPORT
+__attribute__((weak_import))
+#endif
+;
+
+
+int main()
+{
+ foo();
+
+ return 0;
+}
+
--- /dev/null
+
+extern void bar();
+
+
+
+
+int main()
+{
+ bar();
+ return 0;
+}
+
${PASS_IFF_ERROR} ${CC} ${CCFLAGS} -DSHRINK=4 test.c --save-temps -o test-${ARCH} 2>/dev/null
clean:
- rm -rf test-* *.o *.s *.i
+ rm -rf test-* *.o *.s *.i *.bc
projects / apple / ld64.git / commitdiff
