.globl __dyld_start
#ifdef __i386__
-#if !TARGET_IPHONE_SIMULATOR
- .data
-__dyld_start_static_picbase:
- .long L__dyld_start_picbase
-Lmh: .long ___dso_handle
-#endif
-
- .text
- .align 2
-# stable entry points into dyld
- .globl _stub_binding_helper
-_stub_binding_helper:
- jmp _stub_binding_helper_interface
- nop
- nop
- nop
- .globl _dyld_func_lookup
-_dyld_func_lookup:
- jmp __Z18lookupDyldFunctionPKcPm
- nop
- nop
- nop
-
- # space for future stable entry points
- .space 32
-
#if !TARGET_IPHONE_SIMULATOR
.text
.align 4, 0x90
pushl %edx # simulate return address into _start in libdyld
jmp *%eax # jump to main(argc,argv,env,apple) with return address set to _start
#endif
-
- .globl dyld_stub_binding_helper
-dyld_stub_binding_helper:
- hlt
-L_end:
+
+#if !TARGET_IPHONE_SIMULATOR
+ .data
+__dyld_start_static_picbase:
+ .long L__dyld_start_picbase
+Lmh: .long ___dso_handle
+#endif
+
+
#endif /* __i386__ */
.quad __dyld_start
#endif
-# stable entry points into dyld
- .text
- .align 2
- .globl _stub_binding_helper
-_stub_binding_helper:
- jmp _stub_binding_helper_interface
- nop
- nop
- nop
- .globl _dyld_func_lookup
-_dyld_func_lookup:
- jmp __Z18lookupDyldFunctionPKcPm
- nop
- nop
- nop
-
- # space for future stable entry points
- .space 24
#if !TARGET_IPHONE_SIMULATOR
.text
__dyld_start_static_picbase:
.long L__dyld_start_picbase
- .text
- .align 2
- .globl _stub_binding_helper
-_stub_binding_helper:
- b _stub_binding_helper_interface
- nop
-
- .globl _dyld_func_lookup
-_dyld_func_lookup:
- b _branch_to_lookupDyldFunction
- nop
-
- # space for future stable entry points
- .space 24
-
// Hack to make ___dso_handle work
// Without this local symbol, assembler will error out about in subtraction expression
__dyld_start:
mov r8, sp // save stack pointer
sub sp, #16 // make room for outgoing parameters
- bic sp, sp, #7 // force 8-byte alignment
+ bic sp, sp, #15 // force 16-byte alignment
// call dyldbootstrap::start(app_mh, argc, argv, slide, dyld_mh, &startGlue)
L__dyld_start_picbase_ptr:
.long __dyld_start_static_picbase-L__dyld_start_picbase
Lmh: .long ___dso_handle-L3-8
-
+
+#endif /* __arm__ */
+
+
+
+
+#if __arm64__
+ .data
+ .align 3
+__dso_static:
+ .quad ___dso_handle
+
.text
.align 2
-_branch_to_lookupDyldFunction:
- // arm has no "bx label" instruction, so need this island in case lookupDyldFunction() is in thumb
- ldr ip, L2
-L1: ldr pc, [pc, ip]
-L2: .long _lookupDyldFunction_ptr-8-L1
-
- .data
- .align 2
-_lookupDyldFunction_ptr:
- .long __Z18lookupDyldFunctionPKcPm
+ .globl __dyld_start
+__dyld_start:
+ mov x28, sp
+ and sp, x28, #~15 // force 16-byte alignment of stack
+ mov x0, #0
+ mov x1, #0
+ stp x1, x0, [sp, #-16]! // make aligned terminating frame
+ mov fp, sp // set up fp to point to terminating frame
+ sub sp, sp, #16 // make room for local variables
+ ldr x0, [x28] // get app's mh into x0
+ ldr x1, [x28, #8] // get argc into x1 (kernel passes 32-bit int argc as 64-bits on stack to keep alignment)
+ add x2, x28, #16 // get argv into x2
+ adrp x4,___dso_handle@page
+ add x4,x4,___dso_handle@pageoff // get dyld's mh in to x4
+ adrp x3,__dso_static@page
+ ldr x3,[x3,__dso_static@pageoff] // get unslid start of dyld
+ sub x3,x4,x3 // x3 now has slide of dyld
+ mov x5,sp // x5 has &startGlue
-
- .text
- .globl dyld_stub_binding_helper
-dyld_stub_binding_helper:
- trap
+ // call dyldbootstrap::start(app_mh, argc, argv, slide, dyld_mh, &startGlue)
+ bl __ZN13dyldbootstrap5startEPK12macho_headeriPPKclS2_Pm
+ mov x16,x0 // save entry point address in x16
+ ldr x1, [sp]
+ cmp x1, #0
+ b.ne Lnew
-L_end:
-#endif /* __arm__ */
+ // LC_UNIXTHREAD way, clean up stack and jump to result
+ add sp, x28, #8 // restore unaligned stack pointer without app mh
+ br x16 // jump to the program's entry point
-/*
- * dyld calls this function to terminate a process.
- * It has a label so that CrashReporter can distinguish this
- * termination from a random crash. rdar://problem/4764143
- */
+ // LC_MAIN case, set up stack for call to main()
+Lnew: mov lr, x1 // simulate return address into _start in libdyld.dylib
+ ldr x0, [x28, #8] // main param1 = argc
+ add x1, x28, #16 // main param2 = argv
+ add x2, x1, x0, lsl #3
+ add x2, x2, #8 // main param3 = &env[0]
+ mov x3, x2
+Lapple: ldr x4, [x3]
+ add x3, x3, #8
+ cmp x4, #0
+ b.ne Lapple // main param4 = apple
+ br x16
+
+#endif // __arm64__
+
+
+// When iOS 10.0 simulator runs on 10.11, abort_with_payload() does not exist,
+// so it falls back and uses dyld_fatal_error().
+#if TARGET_IPHONE_SIMULATOR
.text
.align 2
.globl _dyld_fatal_error
_dyld_fatal_error:
-#if __arm__
- trap
- nop
-#elif __x86_64__ || __i386__
int3
nop
-#else
- #error unknown architecture
#endif
-#if __arm__
- // work around for: <rdar://problem/6530727> gdb-1109: notifier in dyld does not work if it is in thumb
- .text
- .align 2
- .globl _gdb_image_notifier
- .private_extern _gdb_image_notifier
-_gdb_image_notifier:
- bx lr
-#endif
projects / apple / dyld.git / blobdiff