ld64-77.tar.gz

[apple/ld64.git] / ChangeLog

----- Tagged ld64-77

2007-07-3     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5351380> Kernel is linked with some global symbols unsorted
        * src/MachOWriterExecutable.hpp: Add NListNameSorter to allow global atoms and extra labels to be sorted


2007-07-20     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5254468> Can't do objc_msgSendSuper dispatches after loading a Fix&Continue bundle
        * src/MachOWriterExecutable.hpp: when calculating what kind of reloc to use, never use an 
          external reloc to reference 32-bit ObjC symbols.


2007-07-20     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5349847> Runtime crash with ICC math library on Leopard
        * src/MachOReaderRelocatable.hpp: detect if section starts with a symbol that is not 
          aligned to section and correct it.


----- Tagged ld64-76

2007-06-29     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5303718> export hiding does not work for frameworks
        * src/MachOReaderDylib.hpp: fix checks in isPublicLocation()
        * unit-tests/test-cases/symbol-moving: update to test frameworks as well as dylibs


2007-06-27     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5299907> linker should use undefines from flat dylibs when linking a main flat
        * src/ObjectFile.h: added fLinkingMainExecutable
        * src/Options.cpp: set up fLinkingMainExecutable
        * src/MachOReaderDylib.hpp: when linking a main executable for flat namespace, the reader for
                any loaded flat namespace dylib will have a new atoms that has references to all undefined
                symbols in the dylib
        * unit-tests/test-cases/flat-indirect-undefines: added test case
        * doc/man/man1/ld.1: update man page to describe when dylib undefines are used
        

2007-06-27     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5277857> OpenGL.framework and X11 both have a libGL.dylib which can cause ld to segfault if both are found
        * src/MachOReaderDylib.hpp: add assertNoReExportCycles() method
        * unit-tests/test-cases/dylib-re-export-cycle: added test case


2007-06-27     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5286462> ld64 has slightly different warning message formats than the old ld
        * src/ld.cpp: standardize all warning messages to start with "ld: warning"
        * src/MachOWriterExecutable.hpp: ditto
        * src/MachOReaderRelocatable.hpp: ditto
        * src/MachOReaderDylib.hpp:ditto


2007-06-26     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5297034> -dead_strip can cause duplicate external commons
        * src/ld.cpp: don't use discarded coalesced global atoms as dead strip roots
        * src/machochecker.cpp: error if duplicate external symbols
        * unit-tests/test-cases/commons-coalesced-dead_strip: added test case
        

2007-06-26     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4135857> update man page that linker does not search indirect libraries with two-level namespace
        * doc/man/man1/ld.1: add new "Indirect dynamic libraries" section to man page
        

2007-06-26     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5285473> Xc9A466: Exports file cannot use Mac line ends
        * src/Options.cpp: check for \r or \n when parsing .exp files
        * unit-tests/test-cases/exported_symbols_list-eol: added test case
        

----- Tagged ld64-75

2007-05-31     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4607755> Simplier, generalized way to re-export dylibs: LC_REEXPORT_DYLIB
        * src/MachOWriterExecutable.hpp: Use LC_REEXPORT_DYLIB when targetting 10.5


----- Tagged ld64-74.5

2007-05-31     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5241902> set OSO timestamp to zero for when building in buildit
        * src/ld.cpp: check for RC_RELEASE and if exists set all OSO timestamps to zero
        

2007-05-30     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5224676> BUILD_STABS now causes ld of xnu to bus error
        * src/ld.cpp: Change || to && in collectStabs()


----- Tagged ld64-74.4

2007-05-18     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5211667> static probes don't work with libraries in dyld shared cache
        *  src/OpaqueSection.hpp: the __TEXT segment is executable


----- Tagged ld64-74.3

2007-05-16     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5201463> ppc: linker adds stubs to cstring references
        * src/MachOWriterExecutable.hpp: update ppc stubableReference() to only allow high/low references
                to be stubed if they reference a symbol in some other dylib.
        * unit-tests/test-cases/stub-generation: added test case
        

2007-05-16     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5008421> ppc64: need to make LOCAL indirect symbol table entry for now local symbol
        * src/MachOWriterExecutable.hpp: factored local tests into indirectSymbolIsLocal()
        * unit-tests/test-cases/non-lazy-r: added test case
        

2007-05-15     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5198807> ld64 drops fix&continue bit in __OBJC, __image_info.
        * src/MachOReaderRelocatable.hpp: implement objcReplacementClasses()
        

2007-05-15     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5066152> support __image_info in __DATA segment for 64-bits
        * src/MachOReaderRelocatable.hpp: use strncmp() for __objc_imageinfo since it is 16 bytes long
        * src/MachOWriterExecutable.hpp: specialize segment/section names for synthesized objc image info section


2007-05-15     Nick Kledzik    <kledzik@apple.com>

        * unit-tests/include/common.makefile: set COMPILER_PATH so harness works with latest compiler


----- Tagged ld64-74.2

2007-05-11     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5195447> ld64-74.1 breaks libstdc++ DejaGnu test (G5 only)
        * src/MachOWriterExecutable.hpp: don't stub a reference if the target offset is non-zero
        

----- Tagged ld64-74.1

2007-05-09     Nick Kledzik    <kledzik@apple.com>
        
        * src/Options.h: add emitWarnings()
        * src/Options.cpp: wire up -w to emitWarnings()


2007-05-09     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5137285> ld64 won't link wine (regression from Tiger)
        * src/Architectures.hpp: add x86::kPointerDiff16 and x86::kPCRel16
        * src/MachOReaderRelocatable.hpp: add support to parse new relocs
        * src/MachOWriterExecutable.hpp: add support fo new relocs
        

2007-05-08     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5182537> need way for ld and dyld to see different exported symbols in a dylib
        * src/MachOReaderDylib.hpp: update parse and use $ld$ symbols
        * src/Options.h: move VersionMin to ReaderOptions
        * src/ObjectFile.h: move VersionMin to ReaderOptions
        * src/Options.cpp:  move VersionMin to ReaderOptions
        * src/MachOWriterExecutable.hpp: move VersionMin to ReaderOptions
        * unit-tests/test-cases/symbol-moving: added test case
        

2007-05-03     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5181105> typo in error message for linking -pie
        * src/MachOWriterExecutable.hpp: fix typo in error messages
        

----- Tagged ld64-74

2007-05-03     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5171880> ld64 can't find @executable _path relative dylibs from our umbrella frameworks
        <rdar://problem/4019497> ld64 should handle linking against dylibs that have @loader_path based dylib load commands
        * src/ObjectFile.h: add from parameter to findDylib()
        * src/MachOReaderDylib.hpp: supply from parameter to findDylib()
        * src/ld.cpp: use from parameter for @loader_path substitution in findDylib()
        * unit-tests/test-cases/re-export-relative-paths: added test case
        

2007-05-02     Nick Kledzik    <kledzik@apple.com>

        * src/ObjectFile.h: add fLogObjectFiles and fLogAllFiles
        * src/Options.cpp: hook up -t to fLogAllFiles and -whatsloaded to fLogObjectFiles 
        * src/MachOReaderDylib.hpp: log if fLogAllFiles
        * src/MachOReaderRelocatable.hpp: log if fLogObjectFiles or fLogAllFiles 
        * src/MachOReaderArchive.hpp: log if fLogAllFiles
        * doc/man/man1/ld.1: update man page


2007-05-02     Nick Kledzik    <kledzik@apple.com>
        
        <rdar://problem/5177848> typo in message, frameowrk
        * src/Options.cpp: fix typo


2007-05-01     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4977301> "ld" man page is missing the description for many options 
        * doc/man/man1/ld.1: add documentation on all obsolete options
        
        
2007-05-01     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5113424> ld doesn't handle -mlong-branch .o files that have had local symbols stripped
        <rdar://problem/4965359> warning about dwarf line info with -mlong-branch
        * src/MachOReaderRelocatable.hpp: don't lop -mlong-branch stubs off end of functions
        * src/MachOWriterExecutable.hpp: allow code references besides BR24 to be stubable
        

2007-04-30     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5065659> unable to link VTK because __textcoal_nt too large
        * src/MachOReaderRelocatable.hpp: when doing a final link map __textcoal_nt to __text


2007-04-30     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5062685> ld does not report error when -r is used and exported symbols are not defined.
        <rdar://problem/4637139> ld leaves global common symbols not in exported symbols list.
        * src/ld.cpp: stop special casing -r mode in checkUndefines() 
        * src/MachOWriterExecutable.hpp: don't create proxy atom in -r mode if it is supposed to be exported.
                mark tentative definitions are private extern in -r mode even without -keep_private_externs
        * unit-tests/test-cases/exported_symbols_list-r: added test case


2007-04-27     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5137732> ld should keep looking when it finds a weak definition in a dylib
        * src/ld.cpp: modified addJustInTimeAtoms() to keep looking when a weak defintion is found
        * unit-tests/test-cases/weak-def-ordinal: added test case
        

2007-04-27     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5166572> better error message for indirect dylibs missing required architecture
        * src/ld.cpp: when loading indirect dylib add path to error messages


2007-04-25     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5109373> the i386 slice of dyld does not need __IMPORT segment
        * src/ObjectFile.h: add fForDyld
        * src/Options.cpp: set up fForDyld
        * src/MachOReaderRelocatable.hpp: if fForDyld, change __IMPORT segment to __DATA
        * src/MachOWriterExecutable.hpp: recognize __DATA/__pointers in dyld as a non-lazy section


2007-04-24     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5008421> ppc64: need to make LOCAL indirect symbol table entry for now local symbol
        * src/MachOWriterExecutable.hpp: use INDIRECT_SYMBOL_LOCAL for any non-global symbol
        * unit-tests/test-cases/strip_local: update test case
        
        
2007-04-24     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5150407> ld64 -sectorder and -order_file files don't accept white space following the :
        * src/Options.cpp: prune white space after colon and before symbol name
        * unit-tests/test-cases/order_file: update test case to have a space after the colon
        

2007-04-24     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5055233> ld64 corrupts debug symbol table entries, nm doesn't print them
        * src/MachOWriterExecutable.hpp: properly set ilocalsym in module table


2007-04-24     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5066152> support __image_info in __DATA segment for 64-bits
        * src/MachOReaderRelocatable.hpp: look for new objc info section name too


2007-04-24     Nick Kledzik    <kledzik@apple.com>
        
        * src/MachOWriterExecutable.hpp: fix -non_global_symbols_strip_list to work with -r
        * unit-tests/test-cases/local-symbol-partial-stripping: update test case



----- Tagged ld64-73.7

2007-05-10     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5194804> can't use dtrace static probes in x86_64 dylib
        * src/MachOWriterExecutable.hpp: x86_64:kPointerDiff32 is ok in shared region
        * unit-tests/test-cases/dtrace-static-probes: update to build dylib too


2007-05-09     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5191610> 9A430: using -dead_strip with static dtrace probes causes ld to crash
        * src/ld.cpp: fix markLive() to look at right name in dtrace probe refernce
        * unit-tests/test-cases/dtrace-static-probes: added -dead_strip case


----- Tagged ld64-73.6

2007-04-17     Nick Kledzik    <kledzik@apple.com>
        
        <rdar://problem/5140897> Add options to do partial stripping of local symbols
        * src/MachOWriterExecutable.hpp: use fOptions.keepLocalSymbol()
        * src/Options.cpp: implement -non_global_symbols_no_strip_list and -non_global_symbols_strip_list
        * src/Options.h: replace stripLocalSymbols() with localSymbolHandling() and keepLocalSymbol()
        * doc/man/man1/ld.1: document -non_global_symbols_no_strip_list and -non_global_symbols_strip_list
        * unit-tests/test-cases/local-symbol-partial-stripping: added test case
        

----- Tagged ld64-73.5

2007-04-17     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5129379> ld64-73.3 XBS logging incorrectly reporting "direct" dynamic libraries
        * src/ld.cpp: restore direct vs indirect library for LD_TRACE_DYLIBS logging
        

2007-04-16     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5067034> data initialized to a weak imported symbol is missing relocation
        * src/MachOWriterExecutable.hpp: check for A::kPointerWeakImport in buildExecutableFixups()
        * unit-tests/test-cases/weak_import: updated test case to catch this problem


2007-04-13     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5071047> Support -U 
        * src/MachOWriterExecutable.hpp: create proxies for -U symbols
        * src/Options.cpp: process -U 
        * src/Options.h: add allowedUndefined() and someAllowedUndefines()
        * src/ld.cpp: create proxies for -U symbols
        * doc/man/man1/ld.1:  document -U and -undefined options
        * unit-tests/test-cases/undefined-dynamic-lookup: added test case


----- Tagged ld64-73.4

2007-04-12     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5125280> ld changes needed to support read-only DOF
        * src/Options.cpp: remove -read_only_dof
        * src/Options.h: remove fReadOnlyDOFs
        * src/ld.cpp: only generate read-only DOF sections
        

----- Tagged ld64-73.3.1

2007-04-13     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5130496> -framework vecLib -framework Accelerate causes bad ordinals 
        * src/MachOWriterExecutable.hpp: fix bug optimizeDylibReferences() when there are two readers with same install name


----- Tagged ld64-73.3

2007-04-03     Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: read-only-dofs should use 32-bit offsets for x86_64
        * src/MachOReaderDylib.hpp: if "public" re-export is not marked implict, still mark it as re-exported
        

2007-04-02     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5105971> if replacement file for -dylib_file is missing, warn instead of error
        * src/ld.cpp: a try/catch to turn -dylib_file error into a warning.
        * unit-tests/test-cases/dylib_file-missing: add test case
        * doc/man/man1/ld.1: update man page about -dead_strip_dylibs
        

----- Tagged ld64-73.2

2007-03-31     Nick Kledzik    <kledzik@apple.com>
        
        <rdar://problem/5102873> ld64-73: atom sorting error with duplicate zero sized bss symbols
        * src/MachOReaderRelocatable.hpp: suppress warning on sorting zero size zero fill atoms
        
2007-03-31     Nick Kledzik    <kledzik@apple.com>
        
        <rdar://problem/5102845> ld64-73 fails anything linking with -lm
        * src/ld.cpp: when processing dylbs that are sylinks ensure that fDylibMap contains all paths  
        * src/MachOWriterExecutable.hpp: when dead stripping dylibs and renumbering ordinals make sure
                aliases dylib get renumbered too
        * unit-tests/test-cases/dylib-aliases: added
        
        
----- Tagged ld64-73.1
        
2007-03-30     Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: back out use of LC_REEXPORT_DYLIB until rdar://problem/5009909 is in build fleet
        
        
----- Tagged ld64-73
        
2007-03-30     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4175790> ER: -dead_strip_dylibs
        <rdar://problem/3904828> linker should add implicit load commands for indirectly used public dylibs
        * src/ObjectFile.h: change dylib reader interface to implictly/explicitlyLinked
        * src/ld.cpp: use new dylib reader interface
        * src/Options.h: add deadStripDylibs()
        * src/Options.cpp: support -dead_strip_dylibs
        * src/MachOReaderDylib.hpp: use new dylib reader interface
        * src/MachOWriterExecutable.hpp: remove dylib load commands for unused dylibs and alter ordinals 
        * unit-tests/test-cases/re-export-optimizations: added
        * unit-tests/test-cases/dead_strip_dylibs: added
        

2007-03-30     Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: enable -lfoo to search for libfoo.so as well as libfoo.dylib, 
                remove seg addr table hack for transitioning to new linker

2007-03-30     Nick Kledzik    <kledzik@apple.com>
        
        <rdar://problem/5073800> ADOBE XCODE3: Linker is slow with large C++ .o files
        * src/MachOReaderRelocatable.hpp: the compiler generates stubs to weak functions in the
                same translation unit.  Don't treat those like the spurios stubs to static functions.


2007-03-29     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4739044> ld64 should link mach_kernel during xnu builds to support dtrace
        * src/MachOReaderRelocatable.hpp: To handle duplicate labels properly, rework how atoms sizes are set 
                by iterating through sorted fAtoms rather than fAddrToAtom, . Change default alignment of commons
                to be the natural alignment of the size rounded up to the closest power of two and max it at 12.
                Build atoms in reverse symbol table order so that global atoms are constructed before locals.
                This assures that if there is a global and local label at the same location, the global label
                will become the atom's name and the local will be an alias.  Properly handle a label
                at the end of a section.  Handle R_ABS in relocations.  Handle sect-diff relocs with addends.
                Don't auto-strip 'l' symbols in static executables (mach_kernel).
        * src/OpaqueSection.hpp:  opaque_section now has an ordinal
        * src/ld.cpp: opaque_section now requires an ordinal
        * src/ObjectFile.h: add ReaderOptions.fForStatic
        * src/Options.cpp: set fForStatic when building a static executable
        * src/MachOWriterExecutable.hpp: add from atom to StubAtom<ppc>.  Properly write out i386
                sect-diff relocs with addends.  properly write out ppc PICbase relocs where pic base
                is not in the atom.


2007-03-27     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5085863> Typo in ld man page (-exported_symbols_list)
        * doc/man/man1/ld.1: fix typo
        

2007-03-26     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4727750> consider generating LC_UUID from a checksum of the file
        * src/Options.h: change emitUUID() to getUUIDMode()
        * src/Options.cpp: support -random_uuid
        * src/MachOWriterExecutable.hpp: set uuid to be md5 hash of entire output file
        

2007-03-24     Nick Kledzik    <kledzik@apple.com>
        
        * src/MachOWriterExecutable.hpp: restructure writeAtoms() to copy all atoms in memory if possible


2007-03-24     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5082603> ld -r of stripped .o file can incorrectly merge non-lazy pointers
        * src/MachOWriterExecutable.hpp: when generating a .o file, non-lazy pointer with target offsets should be
                encoded as LOCAL in the indirect symbol table
        * unit-tests/test-cases/stripped-indirect-symbol-table: added test case


2007-03-23     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5084564> SWB: ld64-72 errors building with gcc-4.2      
        * src/MachOReaderDylib.hpp: add curly brackets in switch cases
        * src/MachOWriterExecutable.hpp: rearrange classes so there are no template specialization forward references


2007-03-23     Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: fix -print_statistics when using -dead_strip


2007-03-23     Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: generate better names for non-lazy pointers to the interior of atoms


2007-03-16     Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: speed up ld -r a little by reversing relocs en mas


2007-03-16     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4975277> ld Bus Error on missing command line arguments
        * src/Options.cpp: check next argv[] is not NULL


2007-03-16     Nick Kledzik    <kledzik@apple.com>
        
        <rdar://problem/4832049> need to be able to order symbols in anonymous namespaces
        * src/ld.cpp: add logic to do fuzzy matching of symbols with anonymous namespace usage
        * unit-tests/test-cases/order_file-ans: added test case


2007-03-16     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5042552> headerpad_max_install_names deprecated for 64-bit
        * src/ld.cpp: make sure dylib load command order matches command line order
        * src/Options.h: add maxMminimumHeaderPad()
        * src/Options.cpp: add maxMminimumHeaderPad() set by -headerpad_max_install_names
        * src/src/MachOWriterExecutable.hpp: check maxMminimumHeaderPad()
        * doc/man/man1/ld.1: update man page about -headerpad_max_install_names


2007-03-16     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4592484> Linker returns success although exported symbols are undefined.
        * src/ld.cpp: turn missing symbols back into an error


2007-03-16     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4019497> ld64 should handle linking against dylibs that have @loader_path based dylib load commands
        * unit-tests/test-cases/loader_path: added test case
        

2007-03-16     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/3904828> linker should add implicit load commands for indirectly used public dylibs
        <rdar://problem/4142277> Indirect libraries should be found using -F and -L options
        <rdar://problem/4607755> Simplier, generalized way to re-export dylibs: LC_REEXPORT_DYLIB
        * src/ld.cpp: reworked all dylib processing.  Readers can now add the dylib list.
        * src/Options.h: add findFileUsingPaths()
        * src/MachOReaderDylib.hpp: look in re-exported children instead of requring linker to do that
        * src/ObjectFile.h: add processIndirectLibraries(), remove getDependentLibraryPaths()  
        * src/machochecker.cpp: support LC_REEXPORT_DYLIB
    * src/ExecutableFile.h: simplify DyLibUsed
        * src/Options.cpp: add findFileUsingPaths().  add new re-export options
        * src/MachOWriterExecutable.hpp: Use LC_REEXPORT_DYLIB when targetting 10.5
        * doc/man/man1/ld.1: updated with new re-export options
        * unit-tests/test-cases/indirect-path-search: added tests that -F and -L work with indirect dylibs
        * unit-tests/test-cases/re-export-cases: added tests for all combinations of re-exporting
        

2007-03-14     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4982400> sort external relocations to optimize dyld performance 
        * src/MachOWriterExecutable.hpp: added ExternalRelocSorter
        * src/machochecker.cpp: verify external relocations are grouped by symbol number
        * unit-tests/test-cases/external-reloc-sorting: added test case
        
        
----- Tagged ld64-72

2007-03-06     Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: ignore .objc_category_name_* symbols in .exp files
        

2007-03-06     Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: stop special casing mach_kernel and instead requre kernel to be built with -new_linker 
        

2007-03-06     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5044253> ld64-72 (experimental) is causing DejaGnu test failures
        * src/MachOWriterExecutable.hpp: add optimizableGOTReferenceKind() to track GOT uses that cannot be optimized


2007-03-06     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5026135> minimum header padding should be 32 to allow code signing
        * src/Options.cpp: initialize fMinimumHeaderPad to 32
        * src/MachOWriterExecutable.hpp: better calculation of header padding 
        

2007-03-06     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5033206> Linker crashes with -flat_namespace against two-level dylibs that might have re-exports
        * src/ld.cpp: flat namespace should not allow NULL indirect readers


2007-03-06     Nick Kledzik    <kledzik@apple.com>
                
        * src/MachOReaderRelocatable.hpp: don't error on S_COALESCED sections with anonymous atoms
        * src/MachOWriterExecutable.hpp: set MH_PIE bit when linking -pie
        * ld64.xcodeproj/project.pbxproj: don't echo environment when running unit test


2007-03-01     Nick Kledzik    <kledzik@apple.com>

        * doc/man/man1/ld.1: Add descriptions to all "rarely used options"


2007-03-01     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4971033> Remove support for Essential Symbols: Warn about use of -Sp option; remove man page entry
        * src/Options.cpp: make -Sp obsolete
        * doc/man/man1/ld.1: make -Sp obsolete
        

2007-03-01     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/5040314> Support -pie   
        * src/Options.h: Add positionIndependentExecutable()
        * src/Options.cpp: Support -pie option to set positionIndependentExecutable()
        * src/MachOWriterExecutable: if -pie is used, add extra local relocations and error if any
                absolute addressing is used
                

2007-03-01     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4739044> ld64 should link mach_kernel during xnu builds to support dtrace
        * src/ld.cpp: Ensure segments are laid out in discovery order.  Add support for kAbsoluteSymbol.
                        Warn when merging symbols of different visiblity.  Warn when a tentative definition 
                        is replaced by one a real definition with a smaller size.  Lay out __common section
                        so that ones built with -fno-commons come before regular commons.
        * src/ObjectFile.h: remove SegmentOffset ivar and getter/setters
        * src/machochecker.cpp: allow images with no r/w segments
        * src/MachOReaderRelocatable: Add AbsoluteAtom.  Sort tentative definitions by name instead of by size
                        Add support for custom commons alignment.  
        * src/Options.cpp: Fix spurious -sectalign warnings.  Don't use ld_classic when linking mach_kernel
        * src/MachOWriterExecutable.hpp: Support kAbsoluteSymbol atoms. In -r mode, set custom alignment 
                        for commons if alignment is not its size.  Support global __dtrace_probe labels.
        * src/ObjectDump.cpp: add support for kAbsoluteSymbol atoms.
        * unit-tests/test-cases/commons-alignment: Added test case for custom commons alignment
        * unit-tests/test-cases/absolute-symbol: Added test case for basic absolute symbols
        * unit-tests/test-cases/segment-order: Added test case that segments lay out in discovery order
        * unit-tests/test-cases/commons-order: Added test case that commons lay out correctly
        * unit-tests/test-cases/end-label: Added test case that a label used to mark the end of a section does not
                        get associcated with the next section.
        

2007-02-23     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/3965017> gcc-5005: DejaGnu failures due to -frepo
        * src/ld.cpp: Add quotes to referenced from name to make collect2 and -frepo happy
        

2007-02-22     Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: rework how padding after load commands is calculated


2007-02-21     Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: extend special case of __mh_execute_header to static executables too


2007-02-21     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/3882294> gcc link map option ( "-M" ) should be redirectable to file
        * doc/man/man1/ld.1: added -map option description
        * src/Options.h: added generatedMapPath()
        * src/Options.cpp: set up generatedMapPath() if -map option is used
        * src/MachOWriterExecutable.hpp: add writeMap() method to generate map file


2007-02-19     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4557734> Implement GOT Load elimination optimization
        * src/ld.cpp: track size of all atoms and if > 2GB sort large zero-fill atoms to end
        * src/MachOWriterExecutable.hpp: If image size < 2GB, only generate GOT entries if value must be
        updatable by dyld.  If > 2GB, only eliminate GOT entries to non-zero-fill atoms.  Any use
        of an eliminated GOT entry has its code changed from MOVQ _foo@GOT(%rip) to LEAQ _foo(%rip).
        * unit-tests/test-cases/large-data: added
        * unit-tests/test-cases/got-elimination: added


----- Tagged ld64-71.2

2007-02-13     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4995303> new ld ignores -segprot option
        * src/Options.h: expose customSegmentProtections()
        * src/Options.cpp: parse -segprot option and populate customSegmentProtections()
        * src/MachOWriterExecutable.hpp: use customSegmentProtections()


2007-02-13     Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4988068> i386 -stack_addr doesn't work
        * src/MachOWriterExecutable.hpp: use correct offset into thread state record


----- Tagged ld64-71.1

2007-02-07     Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: sort __OBJC2 segment to be next to __OBJC segment


2007-02-07     Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: change missing -seg_addr_table from an error to a warning


2007-02-06     Nick Kledzik    <kledzik@apple.com>
        
        <rdar://problem/4977311> Leopard 9A357: -dylib_file broken?
        * src/MachOWriterExecutable.hpp: remove use of fInstallPathOverride
        * src/Options.cpp: wire up -dylib_file option 
        * src/Options.h: remove fInstallPathOverride.  add fDylibOverrides
        * src/ld.cpp: check dylibOverrides() for indirect libraries
        * unit-tests/test-cases/dylib_file: add test case
        

2007-02-05     Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderDylib.hpp: don't warn about zero size __image_info sections


2007-02-04      Rick Balocca    <rbalocca@apple.com>
        Enable the failing cases for missing command line arguments

2007-02-04      Rick Balocca    <rbalocca@apple.com>
        Make sure that all .o's are checked by ObjectDump
        and all macho are checked by machochecker

2007-02-04      Rick Balocca    <rbalocca@apple.com>
        Fix an endian problem with machochecker
        Fix blank-stubs Makefile

----- Tagged ld64-71

2007-02-02      Rick Balocca    <rbalocca@apple.com>
        blank-stubs test case: handle the case of a native ppc compile--this
        sets the subtype, which must be passed to lipo

2007-02-01      Rick Balocca    <rbalocca@apple.com>
        make cpu-sub-types test more robust

2007-02-01      Rick Balocca    <rbalocca@apple.com>
        auto-arch tests were resulting in a false FAILs

2007-02-01      Rick Balocca    <rbalocca@apple.com>
        test cpu-sub-types was resulting in a false FAIL

2007-02-01      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4969335> STD:VSC: c99 -o writes to file that does not have write permission
        * src/MachOWriterExecutable.hpp: check file is writable before using it

2007-02-01      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4965743> debug map (N_OSO) timestamps for object files in ranlib archive are incorrect
        * src/MachOReaderArchive.hpp: parse modTime for .o files out of archive header

2007-01-31      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4967535> 9A354: ld -all_load does *NOT* produce the same dSYM as *.o or -u
        * src/ld.cpp: when using -all_load don't assume that all atoms have same reader
        * unit-tests/test-cases/dwarf-archive-all_load: added

----- Tagged ld64-70.1

2007-01-31      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: in addObjectRelocs_powerpc() mask scattered r_address to 16-bits

----- Tagged ld64-70


2007-01-30      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4810668> linker should verify GC consistency of modules being linked into library
        <rdar://problem/4474195> Support cpu-sub-types for ppc
        * src/ObjectFile.h: Add getObjCConstraint() and getCpuConstraint()
        * src/MachOReaderRelocatable.hpp:  don't make atom for __image_info section, instead parse constaints
        * src/MachOReaderDylib.hpp: look at __image_info content to get constaints
        * src/ld.cpp: add updateContraints() and checkObjc()
        * src/MachOWriterExecutable.hpp: add ObjCInfoAtom to sythesize __image_info content
        
        
2007-01-28      Nick Kledzik    <kledzik@apple.com>

        src/*: remove ObjectFile::requiresFollowOnAtom() method
        

2007-01-28      Nick Kledzik    <kledzik@apple.com>

        src/ld.cpp: enable LLVM_SUPPORT by default
        src/LLVMReader.hpp: don't use absolute paths for llvm headers and libraries
        

2007-01-26      Rick Balocca    <rbalocca@apple.com>
        * src/ObjectDump.cpp: The usage() message was incorrect.


2007-01-25      Rick Balocca    <rbalocca@apple.com>
        * unit-tests/test-cases/zero-fill3:  It was reporting FAIL on ld64 error return.
                It should have been checking for non-error return.


2007-01-24      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4952297> x86 fast stubs should not cross 64-byte boundries
        * src/MachOWriterExecutable.hpp: for x86, 64-byte align __jump_table section 
        and make 64-btye crossing stubs be empty entries with indirect symbol table 
        entry of INDIRECT_SYMBOL_ABS


2007-01-19      Nick Kledzik    <kledzik@apple.com>

        * src/Options.h: add readOnlyx86Stubs()
        * src/Options.cpp: support -read_only_stubs
        * src/MachOWriterExecutable.hpp: make __IMPORT segment not writable if -read_only_stubs is used
        

2007-01-16  Eric Christopher  <echristo@apple.com>

        <rdar://problem/4856341> ld64 --help isn't recognized
        * src/Options.cpp (Options::parse): Support --help and -help.


2007-01-15      Nick Kledzik    <kledzik@apple.com>

        * src/MachOFileAbstraction.hpp: add range checking on macho_scattered_relocation_info::set_r_address()


2007-01-14      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4514409> Support wildcards in contents of -exported_symbols_list
        * src/Options.h: add SetWithWildcards class
        * src/Options.cpp: add -exported_symbol and -unexported_symbol and use SetWithWildcards
        * doc/man/man1/ld.1: add -exported_symbol and wildcard explanation
        * unit-tests/test-cases/exported-symbols-wildcards: added test case


2007-01-10      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4868270> [U]SDT probes should use C calling convention
        * src/Options.cpp: Add -read_only_dof
        * src/ld.cpp: create __dof section(s) based on probe and isenabled sites
        * src/MachOReaderRelocatable.hpp: parse new sdt 2.0 probes encoded in .o files
        * src/MachOWriterExecutable.hpp: handle regenerating dtrace probes into .o files
        * unit-tests/test-cases/dtrace-static-probes: added test case


----- Tagged ld64-69.8

2007-01-30      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4964508> Support LD_FORCE_NO_SEG_ADDR_TABLE
        * src/Options.cpp: Support LD_FORCE_NO_SEG_ADDR_TABLE
        

----- Tagged ld64-69.7

2007-01-25      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4949507> Leopard9A351: CFM Apps Are Broken because CFM glue is missing
        * src/MachOReaderRelocatable.hpp: check S_ATTR_NO_DEAD_STRIP in dontDeadStrip()


----- Tagged ld64-69.6

2007-01-24      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4947347> LD_TRACE_ARCHIVES should only print out when a .o is actually used from an archive
        * src/ld.cpp: create and use logArchive() 

        
----- Tagged ld64-69.5

2007-01-22      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4946075> 9A350: can't link ppc programs with ld_classic
        * src/Options.cpp: Remove support for LD_NO_CLASSIC_LINKER. Add support for -classic_linker

        
----- Tagged ld64-69.4
        
2007-01-17      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4925645> QTComponents does not link with ld64
        * src/MachOReaderRelocatable.hpp: handle N_RSYM and N_PSYM stabs

        
----- Tagged ld64-69.3

2007-01-03      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: If the same dylib is specified twice and the second is specified weak, make it weak


----- Tagged ld64-69.2

2006-12-18      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4889729> -dead_strip without -exported_symbols_list should not strip global functions from archives
        * src/ld.cpp: when adding a .o file from an archive, add all its global symbols to live roots
        * unit-tests/test-cases/dead_strip-archive: added


2006-12-18      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4889409> flat_namespace main executables do not need to indirect interior references
        * src/MachOWriterExecutable.hpp: don't indirect references to global symbols in main executables
        * unit-tests/test-cases/flat-main: updated to test for indirection
        * unit-tests/test-cases/flat-dylib: added


----- Tagged ld64-69.1

2006-12-15      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4886721> -flat_namespace does not work with -mdynamic-no-pic
        * src/MachOWriterExecutable.hpp: rework checking for use of ppc absolute addressing to allow them as long as
          the target is within the same linkage unit.


2006-12-15      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4886652> -ObjC should only load .o with .objc_ symbols
        * src/Options.cpp: remove warning from -ObjC and have it instead set fLoadAllObjcObjectsFromArchives
        * src/MachOReaderArchive.hpp: when -ObjC is used, preload all .o files from archives that contain .objc_ symbols


----- Tagged ld64-69

2006-12-13      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4879913> prebound interior pointers must be non-zero
        * src/MachOWriterExecutable.hpp: in fixUpReference_powerpc() set lazy pointers bound to with the dylib to
         their target value. Properly set REFERENCE_FLAG_UNDEFINED_* flags in reference table and n_desc


2006-12-09      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4868738> ld64 fails to detect error that ld_classic does
        * src/MachOWriterExecutable.hpp: check for absolute reloc to an external symbol
        * src/MachOReaderRelocatable.hpp: ignore -mlong-branch stubs in .o files


2006-12-09      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4874209> symbols with REFERENCED_DYNAMICALLY should never be stripped
        * src/MachOWriterExecutable.hpp: update Writer<A>::shouldExport() to check for kSymbolTableInAndNeverStrip
        * unit-tests/test-cases/main-stripped: add test that dynamically referenced symbol cannot be stripped


2006-12-08      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/allowable-client: add variant test cases (e.g. CoreServices_profile)
        * src/ld.cpp: allow frameworks with variant install names (e.g. CoreServices_profile) to be private clients


2006-12-08      Nick Kledzik    <kledzik@apple.com>

        * doc/man/man1/ld.1: rewrite man page
        * src/Options.h: add warnObsolete()
        * src/Options.cpp: use warnObsolete() on many options.  Make nonWeak the weak-mis-match default.
                Make -ObjC mean -all_load.

----- Tagged ld64-68.3

2006-12-05      Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: allow umbrella frameworks to have variant install names (e.g. CoreServices_profile) and still link


----- Tagged ld64-68.2

2006-12-05      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.cpp: Use N_PBUD in the symbol table for undefined symbols in prebound dylibs


----- Tagged ld64-68.1

2006-12-01      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: always generate module tables for 32-bit architectures so that ld_classic
                can link against them


----- Tagged ld64-68

2006-12-01      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4858299> seg_addr_table needs matching fuzziness
        * src/Options.cpp: special case a how a dozen dylib are looked up in the seg_addr_table


2006-12-01      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: have all -static links for 32-bit archs roll over to ld_classic unless
                LD_NO_CLASSIC_LINKER_STATIC is set.
        * unit-tests/bin/make-recursive.pl: set LD_NO_CLASSIC_LINKER_STATIC for unit tests


2006-11-29      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4855542> ld64-67: QTComponents fails to build
        * src/MachOReaderRelocatable.hpp: don't error out when a local non-lazy pointer does not point to a symbol
        * unit-tests/test-cases/strip_local: added test case


2006-11-28      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4433496> Need a way to mark libraries usable by dynamic linker but unusable by static linker
        * src/Options.cpp: allow -client_name to be used with main executables
        * src/ld.cpp: generalize -allowable_client.  Any dylib can now restrict who can link against it.  As a convention
                linking with -allowable_client '!' will mean no one can statically link with the dylib.  It can still be loaded
                dynamically, or by any existing clients, but no new clients can link with it.
        * unit-tests/test-cases/allowable-client/Makefile: enable previously commented out test cases.  Add test cases
                of a dylib that allows no clients and just one client

2006-11-27      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4795615> -final_output should be used if -install_name not used
        * src/Options.cpp: fall back to using -final_output for install name


----- Tagged ld64-67

2006-11-17      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: support __IMPORT segment being slide independently of __DATA segment in shared cache


2006-11-16      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4838262> 9a303: ld -filelist Bus Error
        * src/Options.cpp: add check that -filelist is followed by an argument


2006-11-16      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: when building split-seg dylibs, LINKEDIT goes in read-only side


2006-11-15      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: set proper attributes for __eh_frame in ld -r mode
        * unit-tests/test-cases/eh_frame: added test case


2006-11-10      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: redirect references to static weak stubs to the real target


2006-11-09      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: r_address is offset from first LC_SEGMENT vmaddr - not from segment with lowest address


----- Tagged ld64-66.1

2006-11-09      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: initialize fModuleInfoAtom to zero


2006-11-08      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4821985> FSF GCC's libjava doesn't link with Ochre ld64
        * src/MachOReaderRelocatable.hpp: ignore debug_line section if debug_info section is missing or empty

----- Tagged ld64-66

2006-11-07      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4824368> SWB: d64-65 does not built usage split-seg dylibs
        * src/MachOWriterExecutable.hpp: when prebinding split-seg correctly set r_address fields and on
        disk values for external relocations
        * unit-tests/test-cases/prebound-split-seg: added test case


2006-11-03      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderDylib.hpp: don't report dependent libraries if MH_NO_REEXPORTED_DYLIBS bit is set
        * src/MachOWriterExecutable.hpp: set MH_NO_REEXPORTED_DYLIBS bit if dylib does not logically re-export any other dylibs
        * unit-tests/test-cases/re-export-flag: added test case
        * src/machochecker.cpp: validate use of MH_NO_REEXPORTED_DYLIBS


2006-11-02      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4814565> Mysterious messages from ld64 with MACOSX_DEPLOYMENT_TARGET = 10.5
        * src/MachOWriterExecutable.hpp: kPointerWeakImport is a valid reference type to cross segments


2006-11-02      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp,h: Add support for -rpath
        * src/MachOFileAbstraction.hpp: add macho_rpath_command
        * src/MachOWriterExecutable.hpp: add RPathLoadCommandsAtom to create LC_RPATH for each -rpath


----- Tagged ld64-65

2006-10-30      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4729162> x86_64 default stack_addr is wrong
        * src/Options.cpp: change default 64-bit stack location when using -stack_size


2006-10-30      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4474316> dylibs need modules for 10.3 and for ld_classic in Salt
        * src/MachOWriterExecutable.hpp: add ModuleInfoLinkEditAtom to create module table stuff
        * src/Options.cpp,h: Add needsModuleTable()
        * src/MachOFileAbstraction.hpp: Add macho_dylib_module, macho_dylib_reference, and macho_dylib_table_of_contents


2006-10-27      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/no-uuid/Makefile: add -gstabs+ to be compatible with latest compiler
        * unit-tests/test-cases/stabs-coalesce/Makefile: add -gstabs+ to be compatible with latest compiler


2006-10-26      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4585230> i386 -mdynamic-no-pic switch statement jump table is out of line
        * src/MachOWriterExecutable.hpp: for i386 don't check for direct references to weak symbols


2006-10-26  Devang Patel  <dpatel@apple.com>

        * src/LLVMReader.hpp: Supply final output file path to optimizer.

2006-10-26  Devang Patel  <dpatel@apple.com>

        * src/ObjectFile.h: Make setSection* methods virtual.
        * src/LLVMReader.hpp: Override setSection* methods.

2006-10-26  Devang Patel  <dpatel@apple.com>

        * unit-tests/test-case/llvm-integration/a13.h: New.
        * unit-tests/test-case/llvm-integration/a13.cc: New.
        * unit-tests/test-case/llvm-integration/main13.cc: New.

2006-10-26  Devang Patel  <dpatel@apple.com>

        * src/options.h, src/options.cpp: Add -save-temps command line option.
        * src/LLVMReader.hpp: Use saveTemps option.


2006-10-26  Devang Patel  <dpatel@apple.com>

        * src/LLVMReader.hpp: Remove invalid module from memory.

2006-10-26  Devang Patel  <dpatel@apple.com>

        * src/LLVMReader.hpp: Collect symbol alignment info from LLVM optimizer.

2006-10-21  Eric Christopher  <echristo@apple.com>

        * src/ld.cpp (Linker::Linker): Check for LD_NO_CLASSIC_LINKER before
        invoking ld_classic.
        * unit-tests/test-cases/relocs-literals/Makefile: Run for -mdynamic-no-pic
        and pic.
        * unit-tests/test-cases/static-executable/Makefile: Skip for 64-bit. Add
        -dead_strip to command line.

----- Tagged ld64-64.2

2006-10-19      Nick Kledzik    <kledzik@apple.com>

        * ld64.xcodeproj/project.pbxproj: stop copying LLVMReader.hpp into man1 directory

----- Tagged ld64-64.1

2006-10-19      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4791643> ld64-63.1 erroneously coalesces an empty string with a non-empty string
        * src/MachOReaderRelocatable.hpp: rework cstring parsing to not assume all strings are start
          at section alignment boundaries, and when coalescing empty strings always use one with greatest
          alignment requirement
        * src/MachOWriterExecutable.hpp: in -r mode, don't pad end of cstring section
        * src/ObjectFile.h: correctly name leadingZeros() as trailingZeros()
        * src/ld.cpp: leadingZeros() --> trailingZeros()


2006-10-18  Eric Christopher  <echristo@apple.com>

        * unit-tests/test-cases/read-only-relocs/Makefile: Skip for x86_64.
        * unit-tests/test-cases/llvm-integration/Makefile: Skip if llvm isn't
        present.

2006-10-18      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4783853> ld64 change required to go with assembler cstring change
        <rdar://problem/4732996> ld64 should error when a local relocation references an address outside its section
        * src/MachOReaderRelocatable.hpp: for x86_64  in order to work with local or external relocations to cstrings
        change parser to allow atoms with a pending name that is resolved after references are instantiated.
        Make direct references to kRegularDefinition atoms.
        * src/MachOWriterExecutable.hpp: in -r mode for x86_64 generate L* labels for cstrings and use external relocations
        * unit-tests/test-cases/relocs-literals/test.c: add two cases of cstring literal plus addend


2006-10-06      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4786250> check MACOSX_DEPLOYMENT_TARGET if -macosx_version_min is not used
        * src/Options.cpp: if -macosx_version_min is not used, check MACOSX_DEPLOYMENT_TARGET, if
        that is unused, default to 10.5

----- Tagged ld64-64

2006-10-06      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4756806> crash in ppc64 program - bl to saveFP, but saveFP is too far away?
        * src/MachOWriterExecutable.hpp: in addPPCBranchIslands(), properly account for growth of __text


2006-10-06      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4769120> Linker-defined alias converts reference into definition and generates error.
        * src/MachOReaderRelocatable.hpp: only alias symbols actually in the symbol table


2006-10-06      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/dwarf-debug-notes/Makefile: crt1.o no longer has stabs, so don't need to strip it
        * unit-tests/test-cases/dwarf-debug-notes-r/Makefile: crt1.o no longer has stabs, so don't need to strip it


2006-10-06      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: rework dwarf line parsing to fix warnings that starting
        showing up with gcc-5421


2006-10-05  Eric Christopher  <echristo@apple.com>

        <rdar://problem/4760935> ld64 needs to support libtool options
        * src/Options.cpp (Options::parse): Add -noall_load, -install_name,
        -current_version and -compatibility_version.

2006-10-03  Eric Christopher  <echristo@apple.com>

        * src/Options.cpp (Options::gotoClassicLinker): Use execvp
        to call ld_classic.

2006-10-03  Eric Christopher  <echristo@apple.com>

        * unit-tests/test-cases/tentative-to-real/Makefile: Clean up after tests.

2006-10-03  Eric Christopher  <echristo@apple.com>

        * unit-tests/include/common.makefile (VALID_ARCHS): Add x86_64.
        (OTOOL): Remove munging based on ARCH.

2006-09-29      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4743925> problem merging .o files built with and without -fno-common
        src/Options.*: make MakeTentativeDefinitionsReal a reader option
        src/ObjectFile.h: make MakeTentativeDefinitionsReal a reader option
        src/MachOWriterExecutable.hpp: make MakeTentativeDefinitionsReal a reader option
        src/MachOReaderRelocatable.hpp: only assign a section name of __common to
                tentative defintions when making a final linked image


2006-09-28      Nick Kledzik    <kledzik@apple.com>

        src/Options.h/.cpp: add support for -segaddr option
        src/MachOWriterExecutable.hpp: In Writer::assignFileOffsets(), use -segaddr info


2006-09-28      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4587349> Emit new CPU subtypes for ppc64 and x86-64 when targeting 10.5 or later
        src/MachOWriterExecutable.hpp: set high bit of cpusubtype of 64-bit main executables when targeting 10.5 or later


2006-09-28      Devang Patel    <dpatel@apple.com>

        Add LLVM LTO support
        src/LLVMReader.hpp: New file.
        src/ld.cpp: Add optimization phase. Use LLVM LTO.
        unit-tests/test-cases/llvm-integration: New tests.

2006-09-27      Nick Kledzik    <kledzik@apple.com>

        ld64.xcodeproj/project.pbxproj: remove accidental install of source file into man1


2006-09-25      Nick Kledzik    <kledzik@apple.com>

        src/Architectures.hpp: add kPointerDiff16 for ppc and ppc64
        src/MachOReaderRelocatable.hpp: support kPointerDiff16
        src/MachOWriterExecutable.hpp: support kPointerDiff16

----- Tagged ld64-63.1

2006-09-22      Nick Kledzik    <kledzik@apple.com>

        src/MachOWriterExecutable.hpp: include stubs in LC_SEGMENT_SPLIT_INFO


2006-09-21      Nick Kledzik    <kledzik@apple.com>

        src/Options.cpp: disable split-seg dylibs for 64-bit architectures


2006-09-19      Nick Kledzik    <kledzik@apple.com>

        src/MachOReaderRelocatable.hpp: rework __cstring parsing to better handle mixed alignment cstrings
        src/MachOWriterExecutable.hpp: in -r mode, make all __cstrings aligned to section alignment


2006-09-19      Nick Kledzik    <kledzik@apple.com>

        src/MachOWriterExecutable.hpp: rework encoding of LC_SEGMENT_SPLIT_INFO


2006-09-19      Nick Kledzik    <kledzik@apple.com>

        src/Options.cpp: check for -search_paths_first in first pass


----- Tagged ld64-63

2006-09-15      Nick Kledzik    <kledzik@apple.com>

        src/Options.cpp: since the ld64 will repeatedly search an archive, and some project list archives
                multiple times on command line to work with traditional linkers, automatically ignore duplicate libraries
        unit-tests/test-cases/archive-duplicate: added test case


2006-09-15      Nick Kledzik    <kledzik@apple.com>

        src/Options.cpp: support -r -static
        src/MachOWriterExecutable.hpp: support -r -static an don't generate LC_DYSYMTAB


2006-09-14      Nick Kledzik    <kledzik@apple.com>

        src/MachOWriterExecutable.hpp: in -r mode references to weak symbols should not create external relocations
                as that can cause nmedit to errror later.


2006-09-13      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4718189> ld64: Handle .objc_class_name exports specially
        src/Options.cpp: add hack so that .objc_class_name_XXX in -exported_symbols_list imples _OBJC_CLASS_$_XXX
        src/ld.cpp: add hack to supporess errors about .objc_class_name_XXX or _OBJC_CLASS_$_XXX being undefined


2006-09-12      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4474172> Support -prebind when targeting ppc and OS < 10.4
        src/Options.h: add splitSeg() and baseWritableAddress()
        src/Options.cpp: Add support for -seg_addr_table and LD_SEG_ADDR_TABLE, and -prebind and LD_PREBIND.
        src/src/MachOWriterExecutable.hpp: support split-seg and canonical prebound files to be generated


2006-09-11      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4464904> Linking a dylib or binary from identical binaries should produce the same output
        src/MachOWriterExecutable.hpp: set the timestamps to be constant


2006-09-11      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4070025> Linker support for ordering all sections and symbols
        src/Options.cpp: Add -order_file_statistics.  Allow architecture prefixes in order files
        src/ld.cpp: Use fOptions.printOrderFileStatistics()


2006-09-11      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/3894079> Support -sectorder
        unit-tests/test-cases/order_file: added test case
        src/ld.cpp: Implement order file support in Linker::sortAtoms()
        src/Options.h: add Options.orderedSymbols()
        src/Options.cpp: add parseOrderFile(), implement -order_file


2006-09-07      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4637023> need -i for 64-bit (or equivalent)
        <rdar://problem/4014529> Support -i for aliasing exported symbols
        unit-tests/test-cases/alias-objects: added
        unit-tests/test-cases/alias-command-line: added
        src/ObjectFile.h: Added Atom::getOrdinal() as new way to sort atoms. Added ReaderOptions.fAliases
        src/MachOReaderRelocatable.hpp: Added SymbolAliasAtom to handle multiple symbols to same address
        src/MachOReaderArchive.hpp: implement Atom::getOrdinal() to space out atom ordinals across member objects
        src/Options.cpp: support -i, -alias, -alias_list.  Move search of /Network/Library/Frameworks to after /System/Library/Frameworks
        src/MachOWriterExecutable.hpp: pad out seg_info data.  Implement getOrdinal().
        src/ObjectDump.cpp: call constructors directly instead of using make() wrapper


2006-09-01      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4458878> Need the ability to tag libraries/plug-ins with security attributes
        src/MachOReaderDylib.hpp: add warning if using -root_safe or -setuid_safe and link against dylib that is not
        src/ObjectFile.h: add ReaderOption fRootSafe and fSetuidSafe
        src/Options.cpp: handle -root_safe or -setuid_safe command line options
        src/MachOWriterExecutable.hpp: set MH_ROOT_SAFE and MH_SETUID_SAFE flags


2006-08-31      Nick Kledzik    <kledzik@apple.com>

        src/ld.cpp: Add Linker::processDTrace() for processing dtrace static probes
        src/OpaqueSection.hpp: renamed, add symbol name, add ability to add references
        ld64.xcodeproj/project.pbxproj: remove SectCreate.cpp, add OpaqueSection.hpp


2006-08-28      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4571042> Add convention for removing symbols at link time
        <rdar://problem/3962731> Assembler -L option causes ld64 to split stubs
        unit-tests/test-cases/special-labels: added test case
        src/MachOReaderRelocatable.hpp: ignore L* labels, make l* labels as kSymbolTableNotIn


2006-08-28      Nick Kledzik    <kledzik@apple.com>

        src/lObjectFile.h: refactor isTargetUnbound() into getTargetBinding()
        src/ld.cpp: create __dof section in final linked images from dtrace static probes
        src/Architectures.hpp: add kDtraceProbe
        src/Options.h/cpp: Add support for -dtrace
        src/machochecker.cpp: support LC_SEGMENT_SPLIT_INFO
        src/MachOWriterExecutable.hpp: support kDtraceProbe
        src/MachOReaderRelocatable.hpp: suppport kDtraceProbe


2006-08-25      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4701529> generate LC_SEGMENT_SPLIT_INFO for 10.5 or later dylibs
        src/Options.h&.cpp: implement sharedRegionEligible() to control when LC_SEGMENT_SPLIT_INFO is added
        src/MachOFileAbstraction.hpp: add macho_linkedit_data_command
        src/MachOWriterExecutable.hpp: generate LC_SEGMENT_SPLIT_INFO load command and linkedit content

----- Tagged ld64-62

2006-08-15      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4681062> wrong error message when symbol is found in unused indirect library
        src/ld.cpp: remove indirect libraries if they are not re-exported
        unit-tests/test-cases/indirect-dylib: added test case


2006-08-15      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/3930461> alignment needs to be richer
        src/ObjectFile.h: define ObjectFile::Alignment class for tracking rich alignment info
        src/ld.cpp: modify SymbolTable::add() to work with new Alignment type
        src/MachOReaderRelocatable.hpp: use new Alignment type. Remove alignAtLeast() and handleAnonymousNonLazyPointers()
        src/MachOWriterExecutable.hpp: update for new Alignment type, use modulus when calculating layout address
        src/ObjectDump.cpp: print richer Alignment info
        unit-tests/test-cases/align-modulus: added test case


2006-08-11      Nick Kledzik    <kledzik@apple.com>

        remove OPEN_SOURCE conditionals around x86_64 support


2006-07-31      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4654131> ld64 while linking cc1 [ when dead_strip is ON]
        src/ld.cpp: Add ivar fAtomsWithUnresolvedReferences to track atoms not initially resolvable
        unit-tests/test-cases/dead_strip-archive: added test case


2006-07-31      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4656617> x86_64: instructions with immediate and rip-relative operands need to use new relocation types
        src/MachOWriterExecutable.hpp: generate new reloc types in -r mode
        src/MachOReaderRelocatable.hpp: parse new reloc types
        unit-tests/test-cases/relocs-asm/relocs-asm.s: add test cases for new reloc type


2006-07-18      Nick Kledzik    <kledzik@apple.com>

        src/MachOReaderRelocatable.hpp: suppress warning about dwarf info parsing for one benign no-op case
        the compiler emits when there are not functions in the __text section


2006-07-17      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4634840> faster debug note generation
        src/ld.cpp: rework collectDebugInfo() to produce all debug notes in one pass, intead of a
        pass per .o file. Added timing info for collectDebugInfo() to -print_statistics
        unit-tests/test-cases/dwarf-debug-notes-r/Makefile: add expliced -arch to ld -r
        unit-tests/test-cases/dwarf-debug-notes-r/expected-stabs: alter for new debug notes order


2006-07-17      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4623994> ld64 VSIZE is 1.18GB when building Finder ppc64
        src/ld.cpp: fixed typo in createReader() that prevented dylibs from being unmapped

----- Tagged ld64-61.1

2006-07-11      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4622049> ld64-61: gcc DejaGnu tests failing due to -arch followed by unknown architecture name
        src/Options.cpp: map ppc750, ppc7400, ppc7450, and ppc970 to ppc. Improve error message

2006-07-11      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4622769> If -arch is missing, rollover to ld_classic does not happen
        src/Options.h: make gotoClassicLinker() public
        src/ld.cpp: call gotoClassicLinker() if the inferred architecture is ppc or i386

----- Tagged ld64-61

2006-06-29      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4606628> ld64 should be renamed to ld
        src/Options.cpp: exec() ld_classic if -arch ppc or -arch i386 is seen
        src/ld.cpp: alter version string
        ld64.xcodeproj/project.pbxproj: change install location to /usr/bin/ld, add symlink from /usr/bin/ld64
        doc/man/man1/ld.1: added

----- Tagged ld64-60

2006-06-28      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4604539> Can't link large ppc64 program: ld64 says "bl out of range"
        MachOWriterExecutable.hpp: fix branch island generation to work for weak_import functions
        and properly chain together branch islands
        MachOReaderRelocatable.hpp: improve performance of huge .o file reading by sorted references
        only when done

2006-06-28      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4603454> MySQL-36 fails to build with ld64-59
        src/MachOReaderRelocatable.hpp: back out fix for 4585335
        src/MachOWriterExecutable.hpp: back out fix for 4585335

2006-06-27      Nick Kledzik    <kledzik@apple.com>

        src/MachOReaderRelocatable.hpp: handle N_GSYM without ending :G() since that is how
        dwarf debug notes are formed.

2006-06-23      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4599239 objc class with no superclass causes bad undefined symbol
        src/MachOReaderRelocatable.hpp: handle NULL superclass in objc_class
        unit-tests/test-cases/relocs-objc/test.m: add case with no super class


2006-06-23      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4313369> ld64 doesn't support variant linking -framework fw,_debug
        src/Options.cpp: enhance findFramework() to support suffixes

----- Tagged ld64-59

2006-06-22      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4596726> ld64 lost DWARF debug notes
        src/MachOReaderRelocatable.hpp: add fHasUUID so kDebugInfoStabsUUID can be set later
        unit-tests/test-cases/dwarf-debug-notes-r: added test case

2006-06-21      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4567995> python 64-bit address miscalculation
        src/MachOReaderRelocatable.hpp: change getTargetOffset() to sign extend the 32-bit value to 64-bits

2006-06-21      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4535036> ld64 seems to offset things incorrectly when using -r
        src/MachOWriterExecutable.hpp: in -r mode, virtual sections should not increment address


----- Tagged ld64-58

2006-06-16      Nick Kledzik    <kledzik@apple.com>

        src/rebase.cpp: fix page alignment problem
        src/rebase.cpp: fix endianess problem with local non-lazy pointers

2006-06-15      Nick Kledzik    <kledzik@apple.com>

        src/rebase.cpp: fix to build in CurryWeed
        ld64.xcodeproj/project.pbxproj: fix to build properly in CurryWeed

2006-06-15      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4495309> Support .objc_class_name_* symbols
        src/ObjectFile.h: Add kSymbolTableInAsAbsolute
        src/MachOReaderRelocatable.hpp: synthesize references to required objc classes
        src/MachOWriterExecutable.hpp: write objc_class_name as absolute symbol
        unit-tests/test-cases/objc-references: added

2006-06-15      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4484369> SECTION_ATTRIBUTES unset in ppc64 mach-o header
        src/MachOWriterExecutable.hpp: add section attribute for sections with code

2006-06-15      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4569407> ld64 bogus duplicate symbol name linking GNU libobjc
        src/MachOReaderRelocatable.hpp: only special case Apple objc runtime objc classes

2006-06-15      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4582999> x86_64: ".align" directive not honored
        src/MachOReaderRelocatable.hpp: change code alignment to not depend on atom size

2006-06-14      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4585335> jump table into middle of weak symbol causes error
        src/MachOReaderRelocatable.hpp: create direct references to the interior of weak symbols
        src/MachOWriterExecutable.hpp: do not error on absolute references to interior of weak symbols

2006-06-13      Nick Kledzik    <kledzik@apple.com>

        src/Options.cpp: allow -image_base as an alias for -seg1addr

2006-06-13      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4585115> implement -d
        src/Options.h: add fMakeTentativeDefinitionsReal
        src/Options.cpp: set fMakeTentativeDefinitionsReal if -d option is found
        src/MachOWriterExecutable.hpp: turn tentative into real definition if makeTentativeDefinitionsReal
        unit-tests/test-cases/btentative-to-real: added test case

2006-06-13      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4584355> implement -bundle_loader
        src/Options.h: add fBundleLoader bit to DynamicLibraryOptions
        src/Options.cpp: handle -bundle_loader
        src/ld.cpp: pass fBundleLoader bit to MachOReaderDylib
        src/MachOReaderDylib.hpp: support reading MH_EXECUTE files if fBundleLoader is set
        src/MachOWriterExecutable.hpp: set bundle loader ordinal as EXECUTABLE_ORDINAL
        unit-tests/test-cases/bundle_loader: added test case

2006-06-12      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4583347> -syslibroot can cause "can't find ordinal for imported" error
        src/MachOReaderDylib.hpp: in  Reader::reExports() compare install path in addition to load path


2006-06-10      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4548935> Need rebasing tool
        src/rebase.cpp: added
        unit-tests/test-cases/rebase-basic: added
        doc/man/man1/rebase.1: added
        ld64.xcodeproj/project.pbxproj:  added rebase target.  changed all targets to build with dwarf


2006-06-10      Nick Kledzik    <kledzik@apple.com>

        src/machochecker.cpp: add some ppc reloc sanity checking

----- Tagged ld64-57

2006-06-06      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4565088> ld64 is not adding a final '/' char on the initial directory-name SO stab debug map entry
        ld.cpp: Change Linker::synthesizeStabs() to assure directory SO always has a trailing slash
        unit-tests/test-cases/dwarf-debug-notes/expected-stabs: update with trailing /

2006-06-06      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4572702> -sectcreate of a 0-byte section fails
        MachOWriterExecutable.cpp: Don't error out on zero length segments
        MachOWriterExecutable.cpp: For ppc64 reloc base address is the first writable segment iff
         there is a writable segment >4GB from base address

2006-06-04  Eric Christopher  <echristo@apple.com>

        Radar 4560240
        Radar 3964999
        * src/ld.cpp (createReader): Fixed error message.
        (resolve): Ditto.
        (resolveFrom): Ditto.
        (checkUndefines): Ditto.

----- Tagged ld64-56

2006-05-23      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4558079> No debug notes for ObjC methods when linking with ld64
        ld.cpp: don't limit debug notes to functions starting with underscore

2006-05-22      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4556982> ld64 spends much time in mach_o::relocatable::Reader<x86_64>::findAtomByName
        * src/MachOReaderRelocatable.hpp: add makeReferenceToSymbol() so that x86_64 does not need to do by-name lookups

2006-05-22      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4535044> remove inferring warning
        * ld.cpp: Remove "inferring" warning.  If a link failed and now arch was specifed add which arch was
        inferred to error message

2006-05-19      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4544001> ld64 does not honor -arch_multiple
        * ld.cpp: If fOptions.printArchPrefix(), add architecture name to error message

2006-05-19      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4555973> Support S_16BYTE_LITERALS section types
        * src/MachOReaderRelocatable.hpp: support S_16BYTE_LITERALS
        * src/MachOWriterExecutable.hpp: support S_16BYTE_LITERALS

2006-05-19      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4548803> "warning can't parse dwarf compilation unit info" warnings building debug
        * src/MachOReaderRelocatable.hpp: fix bugs in dwarf line table parsing

----- Tagged ld64-55

2006-05-18      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4534339> Default the pagezero size to 4GB for x86-64
        * src/Options.cpp: Chnage default the pagezero size to 4GB for x86-64

2006-05-18      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4552825> x86_64 CarbonCore fails to link with "atom not found in symbolIndex"
        * src/MachOWriterExecutable.hpp: in buildObjectFileFixups() don't call addObjectRelocs() on kNoFixUp references

2006-05-18      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4553555> ld64: .section defaults to read-only
        * src/MachOReaderRelocatable.hpp: default unknown segments to r/w

2006-05-18      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4551990> -fvisibility=hidden causes crashes for x86_64
        * src/MachOWriterExecutable.hpp: properly handle RIP relative tentative definitions

2006-05-12      Nick Kledzik    <kledzik@apple.com>

        * src/Architectures.hpp: add x86::kAbsolute32
        * src/MachOReaderRelocatable.hpp: generate x86::kAbsolute32 for mdynamic-no-pic instructions
        * src/MachOWriterExecutable.hpp: process x86::kAbsolute32 reference kind

----- Tagged ld64-54

2006-05-11      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4545108> CF-393 failes to link for x86_64
        * src/MachOWriterExecutable.cpp: fix sign extension for Rel32 relocs in Writer<x86_64>::fixUpReferenceRelocatable

2006-05-11      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4501434> warning arch x86_64 not found using i386
        * src/ld.cpp: remove hack to allow x86_64 to link against i386 dylibs


2006-05-10      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4543754> x86_64: .objc_class_name symbol names scrambled
        * src/MachOReaderRelocatable.hpp: properly compute alignment of __OBJC __class sections


2006-05-08      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/3894083> Support -dead_strip
        * src/Options.h/cpp: implement -why_load and -why_live.  Enable -dead_strip.
        * src/MachOReaderArchive.hpp: implement -why_load
        * src/MachOReaderRelocatable.hpp: suppress GCC_except_table* symbols in final output
        * src/ld.cpp: implement dead code stripping
        * unit-tests/test-cases/dead_strip: added

----- Tagged ld64-53

2006-05-05      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: make 10.4 be minimum OS version for newer architectures

2006-05-05      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4147604> N_SO symbols in 64-bit builds have a zero address for n.n_value
        * src/ld.cpp: for SO stabs, associate first and last atom in the SO range
        * src/MachOWriterExecutable.hpp: use atom associated with SO stab to set ins n_value

2006-05-05      Nick Kledzik    <kledzik@apple.com>

        * MachOWriterExecutable.hpp: fix end FUN stab to have length of function


2006-05-02      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4496250> 64-bit main executables should have 4GB zero page by default
        * src/Opptions.cpp: change default pagezero_size to 4GB for ppc64
        <rdar://problem/4492850> 64 bit: apps with -mdynamic-no-pic seg fault when page zero > 4GB
        * src/MachOWriterExecutable.cpp: rework pagezero for ppc64 so that if any mdynamic-no-pic code
        is found, the code is kept in the low 2GB, and a new segment is create to map away up to 4GB.

2006-05-02      Nick Kledzik    <kledzik@apple.com>

        * src/Opptions.cpp: remove warning about -stack_addr not specified.  Add warning if 32-bit stack
        overlaps shared region

----- Tagged ld64-52.1

2006-05-01      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.cpp: rework handleAnonymousNonLazyPointers() to handle anl's in the middle
        the __data section too.

----- Tagged ld64-52

2006-04-28      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4513304> 64-bit: 9A152 TextEdit crashes in dlopen on bring-up
        * src/MachOReaderRelocatable.cpp: rework anonymous non-lazy-pointer detection

2006-04-28      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4528054> 64 Bit: Development build of ppc64 TextEdit gets confused about static variables
        * src/MachOReaderRelocatable.cpp: mark non-lazy-pointer atoms as scopeTranslationUnit if targetting a static symbol


#ifndef __OPEN_SOURCE__
2006-04-27      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4498971> dyld crashes ungracefully on x86_64 when there is an internal exception
        * src/MachOWriterExecutable.cpp: allow non-zero PCRELGOT addends (used by C++ eh frames)
#endif

2006-04-21      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: fix default address for ppc64 custom stack
        * src/MachOWriterExecutable.cpp: fix set up of ppc64 custom stack


2006-04-14      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: fix -sub_library processing to work it dylib is specifed with leaf name

----- Tagged ld64-51.1

2006-04-13      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4513304> 64-bit: 9A152 TextEdit crashes in dlopen on bring-up
        * src/MachOReaderRelocatable.hpp: when detecting anonymous non-lazy-pointers disqualify data
        that points to static or global symbols
        * src/ld.cpp: print version of ld64 in error messages


----- Tagged ld64-51

2006-04-11      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4499168> exported symbols not properly stripped
        * src/MachOReaderRelocatable.hpp: enable AnonymousAtom::setScope()

2006-03-31      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4498391> ld64 fails when linking debug ppc64 HIToolbox
        * src/MachOReaderRelocatable.hpp: handle anonymous non-lazy pointers encoded with local relocations
        * src/MachOWriterExecutable.hpp: in -r mode, only generated INDIRECT_SYMBOL_LOCAL for non-lazy targets that


2006-03-31      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4496499> ld64 should remove generated file if link errors out
        * src/MachOWriterExecutable.hpp: catch exceptions in Writer<A>::write(), delete output file, and rethrow


----- Tagged ld64-50

#ifndef __OPEN_SOURCE__
2006-03-29      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: fix x86_64 addends when -multi_module forces an external relocation
#endif

2006-03-29      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: synthesize .objc_class_name symbols
        * src/MachOFileAbstraction.hpp: use strncpy for sect/seg names to zero fill trailing space

2006-03-28      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: fix spurious warning about dwarf line info

----- Tagged ld64-49.1

2006-03-25      Nick Kledzik    <kledzik@apple.com>

        * MachOWriterExecutable.hpp : don't complain about ppc64 dyld being based > 4GB

----- Tagged ld64-49

2006-03-24      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: dyld is allowed to have synthesized non-lazy pointers
        <rdar://problem/4488113> ld64 is after processing bad GSYM stabs
        * src/MachOReaderRelocatable.hpp: if a GSYM is found that does not match any data symbol, suppress it

2006-03-23      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: in Writer<x86>::fixUpReferenceFinal() fix when x86::kPointer is for an
        external relocation

2006-03-23      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: change macosx-min-version to default to a per-architecture setting
          add warning if -pagezero_size is not page aligned
        * src/MachOWriterExecutable.hpp: properly handle external relocations for ppc64 with 4GB pagezero
        * src/machochecker.cpp: sanity check relocation records

----- Tagged ld64-48

2006-03-21      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4481406> 64bit: passing function pointer to another function passes the wrong function address
        * src/MachOReaderRelocatable.hpp: when processing a non-lazy pointer to a static function, don't accidentally
        match it to a STAB symbol.

2006-03-21      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4180168> .eh symbols make up 13% of libstdc++'s stripped binary size
        * src/ObjectFile.h: add ReaderOptions.fForFinalLinkedImage
        * src/Options.cpp: setup ReaderOptions.fForFinalLinkedImage
        * src/MachOReaderRelocatable.hpp: mark .eh symbols kSymbolTableNotIn when building final linked image

#ifndef __OPEN_SOURCE__
2006-03-21      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4475928> Inca ld64-45 fatal error with C++ and asm() renaming
        * src/MachOReaderRelocatable.hpp: fix Reader<x86_64>::makeReferenceToEH(() to walk relocations to find
        target of eh symbol, rather assume target name is eh symbol name less .eh

#endif
2006-03-21      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4473742> ld64 does not parse optional second argument to -filelist
        * unit-tests/test-cases/filelist: added
        * src/Options.cpp: in Options::loadFileList() handle comma option

#ifndef __OPEN_SOURCE__
2006-03-21      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4483625> 32-bit pointer difference out of range for cxx eh frame
        * src/MachOReaderRelocatable.hpp: x86_64 doesn't have anonymous non-lazy-pointers
        * src/machochecker.cpp: fix validFile() for x86_64
        * unit-tests/run-all-unit-tests: add x86_64
        * unit-tests/include/common.makefile: don't add -g to all compilers
        * unit-tests/test-cases/relocs-asm/relocs-asm.s: add x86_64 test cases
        * unit-tests/test-cases/relocs-c/Makefile: fix to work with x86_64
        * src/ld.cpp: add hack to use i386 dylibs if x86_64 don't exist

2006-03-19      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4483330> ld64 crashes whenever I try to link with dylib1.o
        * src/MachOReaderRelocatable.hpp: in Reader<x86_64>::addRelocReference() fix local relocations
#endif

----- Tagged ld64-47.1

#ifndef __OPEN_SOURCE__
2006-03-16      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4459633> ld64-41 in Leopard doesn't have x86_64 support
        * ld64.xcodeproj/project.pbxproj: enable x86_64 for Leopard
#endif

----- Tagged ld64-47

#ifndef __OPEN_SOURCE__
2006-03-14      Nick Kledzik    <kledzik@apple.com>

        * src/Architectures.hpp: redo x86_64 relocation types
        * src/MachOReaderRelocatable.hpp: redo x86_64 relocation types, make some section type illegal for x86_64
        * src/MachOWriterExecutable.hpp: redo x86_64 relocation types

2006-03-13      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4467122> ld64 -r does not handle internal relocations for x86_64
        * src/MachOWriterExecutable.hpp: handle internal relocations in Writer<x86_64>::fixUpReferenceRelocatable()
          and Writer<x86_64>::addObjectRelocs().
#endif

----- Tagged ld64-46

2006-03-10      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4419505> ld64 should figure out architecture from .o files
        * unit-tests/test-cases/auto-arch: added
        * src/ld.cpp: added Linker::inferArchitecture() to scan .o files are infer architecture to link
        * src/MachOReaderArchive.hpp: enhanced validFile() to look deeper into archive and really valdate
        * src/MachOWriterExecutable.hpp: stop using fOptions.architecture()
        * src/Options.cpp: stop defaulting to ppc64


2006-03-09      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4465004> Need "intentionally left blank" dylib stubs
        * unit-tests/include/common.makefile: add VALID_ARCHS
        * unit-tests/run-all-unit-tests: set up VALID_ARCHS
        * unit-tests/test-cases/blank-stubs: add test case
        * src/ld.cpp: in addDylib(), detect and ignore blank stubs
        * src/MachOReaderDylib.hpp: in constructor, handle blank stubs

2006-03-09      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4471424> crash in stub with 2GB pagezero
        * src/MachOWriterExecutable.hpp: StubAtom<ppc64> can't be no-pic if a large zero-page is used

2006-03-06      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: addSectionAlignment, warn if -sectalign alignment is not a power of two

----- Tagged ld64-45

#ifndef __OPEN_SOURCE__
2006-03-06      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4466930> <rdar://problem/4467982> ld64 failed: rel32 out of range when linking a dylib
        * src/MachOWriterExecutable.cpp: in  Writer<x86_64>::fixUpReferenceFinal add (int32_t) cast
#endif

2006-03-06      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4466930> LP64/9A122: ld64: hang when trying to link DiscRecording framework
        * src/Options.cpp: addSectionAlignment, warn on zero.  Use log2() for alignment conversion

#ifndef __OPEN_SOURCE__
2006-03-06      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4457818> x86_THREAD_STATE64_COUNT will change, ld64 must adapt
        * src/MachOWriterExecutable.hpp: update ThreadsLoadCommandsAtom<x86_64> for new thread status layout
#endif

----- Tagged ld64-44

2006-03-04      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: fix again test for detection of anonymous non-lazy-pointer.
        Error out if .o file contains old __DWARFA style dwarf.

2006-03-02      Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: only re-map page aligned sub-parts of a fat file.  A conformat mmap() requires alignment.

----- Tagged ld64-43

#ifndef __OPEN_SOURCE__
2006-03-03      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4465443> RIP-relative offsets aren't handled properly when the instruction has immediate operands
        * src/Architectures.hpp: add x86_64::kPCRel32_*
        * src/MachOReaderRelocatable.hpp: generate x86_64::kPCRel32_*
        * src/MachOWriterExecutable.hpp: process x86_64::kPCRel32_*
#endif

2006-03-02      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: <rdar://problem/4464370> tighten detection of anonymous non-lazy-pointer

----- Tagged ld64-42

2006-02-28      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: fix x86 __IMPORT permissions for class Segment

2006-02-28      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4461240> SWB: ld64-37 (can't resolve symbol ___dso_handle)
        * src/MachOWriterExecutable.hpp: add class DsoHandleAtom

2006-02-28      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/literals-coalesce-alignment: added test case
        * src/ld.cpp: when coalescing strings pick one with greater alignment
        <rdar://problem/4458660> ld64: CG link failed because lo14 reference to anonymous non-lazy-pointer not aligned
        * unit-tests/test-cases/relocs-c/test.c: tweak to fail like 4458660
        * src/MachOReaderRelocatable.hpp: detect anonymous non-lazy-pointer and transform into real non-lazy-pointers

----- Tagged ld64-41

2006-02-24      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: Warning about -no_dead_strip_inits_and_terms and -i options.
                                           Fix -weak-l option.

----- Tagged ld64-40

2006-02-24      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4454698> Leopard9A113: ppc64 libstdc++.dylib initializer crashes in pthread_once
        * unit-tests/test-cases/multiple-entry-points: added
        * src/MachOReaderRelocatable.hpp: make sure that if there are multiple symbols with the same
        address, that we properly make zero length atoms for all but last symbol

2006-02-24      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: <rdar://problem/4456093> ld64 doesn't realpath(3) B&I tracing paths

2006-02-24      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: <rdar://problem/4457078> 9A110: ld64 can't deal with section names >16 chars

2006-02-23      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp:  use vector.reserve() to minimize re-allocations
        * src/Options.cpp: use vector.reserve() to minimize re-allocations
        * src/MachOReaderRelocatable.hpp:  use vector.reserve() to minimize re-allocations
        * src/MachOReaderDylib.hpp:  use vector.reserve() to minimize re-allocations
        * src/ld.cpp:  use vector.reserve() to minimize re-allocations

2006-02-23      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4455927> ld64 creates corrupt executables (and has malloc errors) with -headerpad option
        * src/MachOWriterExecutable.hpp: Change LoadCommandsPaddingAtom<A>::setSize() to update fLargestAtomSize
        * unit-tests/test-cases/header-pad: added

2006-02-23      Nick Kledzik    <kledzik@apple.com>

        <rdar://problem/4455192> ld64 creates invalid static executables
        * src/MachOWriterExecutable.hpp: Change MachHeaderAtom<A>::copyRawContent() to create correct header
        for static executables.  Change SymbolTableLoadCommandsAtom to skip LC_DYSYMTAB for static executables
        * src/machochecker.cpp: Add tests that static executables are well formed
        * unit-tests/test-cases/static-executable: added

2006-02-22      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: <rdar://problem/4453468> chnage printf on unknown arg to a throw

----- Tagged ld64-39

2006-02-20      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/read-only-relocs: added new test case
        * src/MachOWriterExecutable.hpp: <rdar://problem/4448922> detect and error on relocs in read-only sections
        * src/MachOReaderRelocatable.hpp: fix parsing of i386 absolute addressing relocs

2006-02-20      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/stabs-coalesce: added new test case
        * src/ld.cpp.hpp: <rdar://problem/4449226> in collectStabs removed unused stabs

----- Tagged ld64-38

2006-02-17      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: <rdar://problem/4434578> set correct n_sect field of stabs

2006-02-15      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderArchive.hpp: <rdar://problem/4441920> with -all_load skip over both kinds of SYMDEFs
        * unit-tests/test-cases/archive-basic/Makefile: add -all_load test case

----- Tagged ld64-37

2006-02-13  Eric Christopher  <echristo@apple.com>

        * src/MachOWriterExecutable.hpp (assignFileOffsets): Simplify. Add comments.
        Adjust whitespace.

2006-02-13      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: in Writer<x86>::fixUpReferenceRelocatable() fix kPCRel32 for external case

2006-02-13      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/zero-fill: added
        * src/machochecker.cpp: check that S_ZEROFILL have no file offset
        * src/MachOWriterExecutable.hpp: rework assignFileOffsets() to fix rdar://problem/4441145

2006-02-12      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: <rdar://problem/4440880> fix use of first zero-length c-string in .o file

2006-02-12      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: <rdar://problem/4440905> fix uninitialized fAlignment

2006-02-12      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/relocs-asm/relocs-asm.s: add pointer-diff cases
        * src/Architectures.hpp: make size explicit in ppc/ppc64 kPointerDiff
        * src/MachOReaderRelocatable.hpp: don't allow kPointerDiff64 for ppc (just ppc64)
        * src/MachOWriterExecutable.cpp: set proper r_length for ld -r of kPointerDiff

----- Tagged ld64-36

2006-02-08      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.cpp: rdar://problem/4438677 Handle when a .o file dwarf line info entries but no functions

2006-02-08      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.cpp: Properly set address of first TEXT section
        Keep S_COALESCED attribute for __eh_frame

2006-02-08      Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: Temporarily turn allowable client errors into warnings
        * unit-tests/test-cases/allowable-clientMakefile: Temporarily let warnings be ok for above
        * src/MachOWriterExecutable.hpp: fix ld -r to not use external relocations for symbols make static

2006-02-08      Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: A sibling in an umbrella can always link with its other siblings
        * unit-tests/test-cases/allowable-client: add test case for above

2006-02-08      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: support LOCAL non-lazy pointers to hidden symbols
        * src/machochecker.cpp: verify indirect symbol table
        * unit-tests/test-cases/private-non-lazy: added test case

2006-02-07      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: fix calculation of file offsets in ld -r mode
        * src/machochecker.cpp: verify segment file offsets are within file

----- Tagged ld64-35

2006-02-06      Nick Kledzik    <kledzik@apple.com>

        * ld.cpp: allow parent of sub-framework to link
        * unit-tests/test-cases/allowable-client/Makefile: added cases for parent and clients of parent

2006-02-04      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/relocs-c/test.c:  added some array cases
        * src/MachOReaderRelocatable.hpp: factor out makeReferenceToEH()
        * src/MachOWriterExecutable.hpp: add initial support for non-lazy pointer synthesis

----- Tagged ld64-34

2006-02-04      Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: <rdar://problem/4432917> fix -no_arch_warnings
                                  <rdar://problem/4432932> fix -undefined warning
                                Do BINCL/EINCL optimization for gfull stabs
                                Implement "essential symbols" for stabs (-Sp)
                                Fix allowable clients to only test on direct libraries
        * src/MachOReaderRelocatable.hpp: support BINCL/EINCL stabs

2006-02-03      Nick Kledzik    <kledzik@apple.com>

        * src/machochecker.cpp: add code to check load command alignment
        * src/MachOWriterExecutable.hpp: make load command alignment depend on architecture

2006-02-03      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/literals-coalesce: added
        * src/MachOReaderRelocatable.hpp: assure all targets of low14 ppc relocs are at least 4-byte alignmented

----- Tagged ld64-33

2006-02-02      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: properly coalesce 8-byte literals
        * src/MachOWriterExecutable.hpp: support ppc64::kPointerDiff32

----- Tagged ld64-32

2006-02-02      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: support anonymous zero fill atoms

2006-02-02      Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: A weak definition is good enough, do not search archives for a non-weak one
        * unit-tests/test-cases/archive-weak: add test case for above
        * src/MachOReaderRelocatable.hpp: an atom should never have a by-name reference to itself
        * src/Options.cpp: prevent .eh symbols from being exported via a -exported_symbols_list

2006-02-01      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: Support -macosx_version_min 10.5

2006-02-01      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: don't try to parse debug_line dwarf if no symboled atoms

----- Tagged ld64-31

2006-02-01  Eric Christopher  <echristo@apple.com>

        * unit-tests/test-cases/allow-stack-execute/Makefile: Move otool handling...
        * unit-tests/include/common.makefile: ... here.
        * unit-tests/bin/fail-if-stdin.pl: New.
        * unit-tests/test-cases/no-uuid: Ditto.
        * src/ld.cpp (Linker::) Add fCreateUUID.
        (::Linker): Initialize.
        (::collectStabs): Use. Set if dwarf or we have a UUID already.
        (::writeOutput): Pass as argument to Writer::write along with option.
        * src/Options.h (Option::emitUUID): Declare.
        (Option::fEmitUUID): Ditto.
        * src/Options.cpp (Option::emitUUID): New.
        (parse): Handle -no_uuid.
        * src/MachOReaderRelocatable (Reader::Reader): Handle LC_UUID.
        * src/ExecutableFile.h (Writer::Write): Add createUUID boolean.
        * src/MachOWriterExecutable: Add UUID forward declaration.
        (fUUIDAtom): New.
        (UUIDLoadCommandAtom): Emit LC_UUID if fEmit. New function emit. Size
        to zero at start.
        (Writer::writer): Add handle for LC_UUID. If createUUID emit LC_UUID.
        (MachHeaderAtom::copyRawContent): Don't count a load command if its size is
        0.
        (UUIDLoadCommandAtom::copyRawContent): Depend on fEmit.


2006-01-31      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/dwarf-debug-notes : Added
        * src/ld.cpp: don't generate debug note for .eh symbols
        * src/MachOReaderRelocatable.hpp: make dwarf line info to atom matching faster and better

2006-01-31      Nick Kledzik    <kledzik@apple.com>

        * ld64.xcodeproj/project.pbxproj : Make buildable on Leopard
        * src/MachOFileAbstraction.hpp: make buildable without latest cctools headers

2006-01-31      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: better error message for bad relocs
        * src/ObjectDump.cpp: add emacs tab settings
        * src/SectCreate.h: ditto
        * src/SectCreate.cpp: ditto
        * src/machochecker.cpp: ditto
        * src/ExecutableFile.h: ditto

2006-01-30  Eric Christopher  <echristo@apple.com>

        * src/ExecutableFile.h: Indent.

2006-01-30      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: performance improvements
        * src/ld.cpp: now that stubs are synthesized in write, don't need to special case anymore

2006-01-30      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: fix parsing of pcc relocs
        * unit-tests/test-cases/relocs-asm/relocs-asm.s: add test case for above

2006-01-29      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/weak_import: added test case
        * src/ld.cpp: move code for weak_import mismatch to writer
        * src/ObjectFile.h: remove ImportWeakness methods
        * src/MachOReaderDylib.hpp: ditto
        * src/SectCreate.cpp: ditto
        * src/Architectures.hpp: add new ReferenceKinds for weak_imports
        * src/MachOReaderRelocatable.hpp: implement new ReferenceKinds
        * src/MachOWriterExecutable.hpp: handle new ReferenceKinds and weak_import mismatches

2006-01-29      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp: verify -allow_stack_execute is only used on main executables

2006-01-29      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: sync with latest dwarf reader from Geoff
        * src/debugline.c: sync with latest dwarf reader from Geoff

2006-01-27  Eric Christopher  <echristo@apple.com>

        * src/ld.cpp (Linker::syntesizeStabs): Correct spelling. Update all uses.

2006-01-27  Eric Christopher  <echristo@apple.com>

        * src/Options.h (Options): Add hasExecutableStack, fExecutableStack.
        * src/Options.cpp (Options::hasExecutableStack): New.
        (Options::parse): Parse -allow_stack_execute.
        * src/MachOWriterExecutable.hpp (MachHeaderAtom::copyRawContent):
        Implement MH_ALLOW_STACK_EXECUTION.
        * unit-tests/include/common.makefile (FAIL_IF_EMPTY): New.
        * unit-tests/bin/fail-if-no-stdin.pl: New file.
        * unit-tests/test-cases/allow-stack-execute: New directory.

2006-01-27      Nick Kledzik    <kledzik@apple.com>

        * src/MachOFileAbstraction.hpp: rely on latest system headers
        * src/MachOWriterExecutable.hpp: fix ppc stubs.
                wrote new relocationNeededInFinalLinkedImage() to replace common code

2006-01-27  Eric Christopher  <echristo@apple.com>

        * src/ld.cpp (logTraceInfo): New.
        (Linker::addArchive): Use.
        (Linker::addDylib): Ditto.
        * src/ObjectFile (ReaderOptions::fTraceOutputFile): New.
        * src/MachOReaderArchive.hpp (Reader::Reader): Move trace
        logging to Linker::addArchive.
        * src/Options.cpp (parsePreCommandLineEnvironment): Check
        LD_PRINT_FILE if tracing dylibs or archives.

2006-01-26      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: handle NULL strings in SO debug notes

2006-01-26      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: fix header padding calculation and thread state

2006-01-26      Nick Kledzik    <kledzik@apple.com>

        Rewrite all stabs processing.
        Move sythesize of debug notes into ld.cpp

2006-01-26      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: fix ppc and ppc64 stub relocs

2006-01-25      Nick Kledzik    <kledzik@apple.com>

        * ld64.xcodeproj/project.pbxproj: special case building in Curry

2006-01-25      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: fix bugs in stub/lazy-pointer synthesis

2006-01-24  Eric Christopher  <echristo@apple.com>

        * src/ld.cpp (Linker::createReaders): Change logging title to XBS.
        (Linker::addDylib): Ditto.
        * src/MachOReaderArchive.hpp (Reader::Reader): Ditto.
        * src/Options.h (fPrintOptions): New.
        * src/Options.cpp (Options::Options): Initialize above.
        (Options::checkForFile): Change logging title to XBS.
        (Options::findFramework): Ditto.
        (Options::parse): Add log for options.
        (Options::parsePreCommandLineEnvironmentSettings): Add LD_TRACE_ARCHIVES,
        LD_TRACE_DYLIBS, and LD_PRINT_OPTIONS.

2006-01-24      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: better C++ eh parsing

2006-01-23  Eric Christopher  <echristo@apple.com>

        * unit-tests/bin/fail-if-exit-zero.pl: New.
        * unit-tests/include/common.makefile (FAIL_IF_SUCCESS): Use.
        * unit-tests/allowable-client: New test.
        * src/ld.cpp (Linker::addDylib): Check allowable clients before adding dylib.
        * src/Options.h (allowableClients): New.
        (clientName): Ditto.
        (fAllowableClients): Ditto.
        (fClientName): Ditto.
        * src/Options.cpp: Implement above.
        (parse): Handle -allowable_client and -client_name.
        * src/MachOReaderDylib.hpp (getAllowableClients): New.
        (fAllowableClients): Ditto.
        (Reader): Process LC_SUB_CLIENT load command.
        * src/ObjectFile.h (parentUmbrella): New.
        (getAllowableClients): New.
        * src/MachOWriterExecutable.hpp (AllowableClientLoadCommandsAtom): New.

2006-01-23      Nick Kledzik    <kledzik@apple.com>

        * unit-tests/test-cases/archive-basic: added
        * src/ld.cpp: fix shadowed local variable
        * src/FileAbstraction.hpp: <rdar://problem/4417372> ld64 shouldn't inline when building debug

2006-01-23      Nick Kledzik    <kledzik@apple.com>

        * src/ld.cpp: fix symbol not found error message
        * src/MachOReaderDylib.hpp: add logging to hash table
        * src/MachOReaderRelocatable.hpp: enable stabs processing. Handle static functions with stubs
                                                                        handle labeled cstrings.
        * src/MachOWriterExecutable.hpp: properly suppress atoms not in symbol table. fix low14 error check.
                                                                        add StubAtomHelper.
        * unit-tests/test-cases/relocs-literals/test.c: add more interesting edge cases

2006-01-17      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: tweaks to synthesizing debug notes

2006-01-16      Nick Kledzik    <kledzik@apple.com>

        * src/debugline.{sh}: added
        * src/MachOReaderRelocatable.hpp: synthesize debug notes SOL from dwarf
        * src/MachOWriterExecutable.hpp: fix lazy pointer section
        * src/ObjectDump.hpp: Fix conditionalization
        * unit-tests/test-cases/dwarf-strip: added

2006-01-11      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: support Tiger crt1.o build with old ld64
        * src/ObjectDump.hpp: Support -arch option

2006-01-10      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: fix stubs for ppc64
        * src/MachOFileAbstraction.hpp: fix typo for macho_routines
        * ld64.xcodeproj/project.pbxproj: add machochecker target
        * src/machochecker.cpp: new skeleton for checking mach-o file bit
        * unit-tests/: Add support for running machochecker

2006-01-10      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: warn if dwarf can't be parsed
        * src/MachOReaderArchive.hpp: modTime for OSO stabs from archives is .a modTime

2006-01-09      Nick Kledzik    <kledzik@apple.com>

        * track modification time of .o files so that sythesized OSO stab will have it

2006-01-09      Nick Kledzik    <kledzik@apple.com>

        * src/MachOFileAbstraction.hpp: add macho_uuid_command
        * src/MachOWriterExecutable.cpp: add UUID load command to generated files

2006-01-09      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderDylib.hpp: no longer keep dylib memory mapped
        * src/ld.cpp: don't track dylib sizes because they are not longer memory mapped

2006-01-05      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: support new relocations

2006-01-05      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderDylib.hpp: support MH_DYLIB_STUB
        * src/MachOReaderRelocatable.hpp: Add Geoff's comp unit extractor

2006-01-05      Nick Kledzik    <kledzik@apple.com>

        refactor: transform Atom::dontStripName() to getSymbolTableInclusion()
        * src/ld.cpp: pass dyld_stub_binding_helper to writer
        * src/MachOReaderRelocatable.hpp: update synthesized stabs
          Ignore stubs and lazy pointers in .o files
          Support initializers and terminators
        * src/MachOWriterExecutable.hpp: synthesize stubs and lazy pointers as needed
        * ld64.xcodeproj/project.pbxproj: change Release target to build with dwarf

2006-01-03  Eric Christopher  <echristo@apple.com>

        * src/Options.h (multipleDefinitionsInDylibs): Declare.
        (overridingDefinitionInDependentDylib): Ditto.
        (warnOnMultipleDefinitionsInObjectFiles): Ditto.
        (multiplyDefined): Remove.
        (multiplyDefinedUnused): Ditto.
        (fMultiplyDefined): Ditto.
        (fWarnOnMultiplyDefined): New.
        (fMultiplyDefinedDynamic): Ditto.
        * src/Options.cpp (Options::Options): Initialize above.
        (overridingDefinitionInDependentDylib): New.
        (multipleDefinitionsInDylibs): Ditto.
        (warnOnMultipleDefinitionsInObjectFiles): Ditto.
        (parse): Update comments. Fix parsing of -y option.
        Update error message for -dead_strip. Parse above
        options.

2006-01-02      Nick Kledzik    <kledzik@apple.com>

        * Refactor: move Atom::writeContent() to Writer

2005-12-23      Nick Kledzik    <kledzik@apple.com>

        * Reworked, simplify, and document test harness
        * unit-tests/README: Added

2005-12-23      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: fixes for Objective-C
        * unit-tests/test-cases/relocs-objc: Added

2005-12-22      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: fix check that next reloc is pair
        * src/MachOReaderRelocatable.hpp: Add code to synthesize essential stabs from dwarf

2005-12-21      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: Fix parsing of literal sections
        * src/MachOWriterExecutable.hpp: Fix writing of literal sections
        * unit-tests/test-cases/relocs-literals: Added

2005-12-15  Eric Christopher  <echristo@apple.com>

        * src/Options.h (enum Treatment): New.
        (enum PICTreatment): Delete.
        (enum VersionMin): New.
        (prebind): Declare.
        (macosxVersionMin): Ditto.
        (multiplyDefined): Ditto.
        (multiplyDefinedUnused): Ditto.
        (setVersionMin): Ditto.
        (setPICTreatment): Delete.
        (setReadOnlyRelocTreatment): Ditto.
        (picTreatment): Adjust return type.
        (parseTreatment): New.
        (fPrebind): Ditto.
        (fVersionMin): Ditto.
        (fPICTreatment): Change type.
        (fMultiplyDefined): New.
        (fMultiplyDefinedUnused): Ditto.
        (fLimitUndefinedSymbols): Ditto.

        * src/Options.cpp: Fix whitespace. Add comments on options.
        (Options::Options): Add initializers for new variables.
        (Options::prebind): New.
        (Options::macosxVersionMin): Ditto.
        (Options::parseTreatment): Ditto.
        (Options::setVersionMin): Ditto.
        (Options::setReadOnlyRelocTreatment): Delete.
        (Options::setPICTreatment): Ditto.
        (Options::Parse): Update for above. Add comments.

2005-12-15      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: Add comments about dwarf

2005-12-14      Nick Kledzik    <kledzik@apple.com>

        * src/ELFFileAbstraction.hpp: Added
        * src/ELFReaderRelocatable.hpp: Added
        * Lot of fixes for new architecture
        * Added __OPEN_SOURCE__ to "Preprocessor Macros" to disable new architecture support by default

2005-12-13      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: check for S_ATTR_DEBUG and ignore those sections
        * unit-tests/test-cases/dwarf-ignore: added

2005-12-12      Nick Kledzik    <kledzik@apple.com>

        * Added test harness and three initial tests:
                relocs-asm, relocs-c, and hello-world

2005-12-12      Nick Kledzik    <kledzik@apple.com>

        * src/MachOReaderRelocatable.hpp: Massive refactoring:
                Now there are three Atom classes, Chopping into Atoms
                is done on label boundaries or by knowledge of special
                sections, Share lots of ppc/ppc64 code.
        Stabs process code is temporarily disabled.

2005-12-12      Nick Kledzik    <kledzik@apple.com>

        * src/ObjectDump.cpp: Add command line options: -no_content, -stabs, -no_sort

2005-12-11  Eric Christopher  <echristo@apple.com>

        * src/Options.cpp: Reformat.
        * src/Options.h: Ditto.

2005-12-07  Eric Christopher  <echristo@apple.com>

        * src/MachOReaderRelocatable.hpp (Atom::getAlignment):
        When calculating alignment of an Atom, take into account
        the alignment from which we pulled the Atom.

2005-12-06      Nick Kledzik    <kledzik@apple.com>

        * src/Options.cpp src/Options.h: Add design comments

2005-12-05  Eric Christopher  <echristo@apple.com>

        * src/ld.cpp (Linker::createWriter): Uncomment ppc64 and
        i386 linkers.

2005-12-05  Eric Christopher  <echristo@apple.com>

        * ChangeLog: New file.

2005-12-02      Nick Kledzik    <kledzik@apple.com>

        * src/ObjectFile.h: Add design comments

2005-11-30      Nick Kledzik    <kledzik@apple.com>

        * Fix uses of __OPEN_SOURCE__

2005-11-28      Nick Kledzik    <kledzik@apple.com>

        * Refactor Atom to use getDefinitionKind()

2005-11-21      Nick Kledzik    <kledzik@apple.com>

        * src/MachOWriterExecutable.hpp: don't generate section for commons in -r mode

2005-11-18      Nick Kledzik    <kledzik@apple.com>

        * x86 tweaks

2005-11-18      Nick Kledzik    <kledzik@apple.com>

        * src/ObjectDump.cpp: make work with command line arguments

2005-11-18      Nick Kledzik    <kledzik@apple.com>

        * Massive rework to remove preprocessor conditionals and use templates

2005-11-14      Nick Kledzik    <kledzik@apple.com>

        * Created new Subversion repository for ld64 from cvs tag ld64-27.2