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| author | Ulrich Drepper <drepper@redhat.com> | 2007-10-31 19:25:15 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2007-10-31 19:25:15 +0000 |
| commit | 41ff2a4999f64527a0552c6a9c203157e161fa97 (patch) | |
| tree | 3f07b9ca5b2ec177ab7ca872dcbbdf1c04b76715 | |
| parent | 4c48ef06b4037694d9a548a088f64b6e2f2bb7cf (diff) | |
| download | glibc-41ff2a4999f64527a0552c6a9c203157e161fa97.tar.gz glibc-41ff2a4999f64527a0552c6a9c203157e161fa97.tar.xz glibc-41ff2a4999f64527a0552c6a9c203157e161fa97.zip | |
* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Make sure
stack is properly aligned for the target function. Correct unwind info.
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | sysdeps/x86_64/dl-trampoline.S | 54 |
2 files changed, 31 insertions, 26 deletions
diff --git a/ChangeLog b/ChangeLog index 38f9a33a1a..c387286d9f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2007-10-31 Ulrich Drepper <drepper@redhat.com> + * sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Make sure + stack is properly aligned for the target function. + Correct unwind info. * elf/rtld.c (dl_main): Initialize stack and pointer guard early when using auditing libraries. diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S index 84fe4724b1..3e2d182758 100644 --- a/sysdeps/x86_64/dl-trampoline.S +++ b/sysdeps/x86_64/dl-trampoline.S @@ -62,8 +62,8 @@ _dl_runtime_resolve: .align 16 cfi_startproc _dl_runtime_profile: - subq $80, %rsp - cfi_adjust_cfa_offset(96) # Incorporate PLT + subq $88, %rsp + cfi_adjust_cfa_offset(104) # Incorporate PLT movq %rax, (%rsp) # Preserve registers otherwise clobbered. movq %rdx, 8(%rsp) movq %r8, 16(%rsp) @@ -72,16 +72,16 @@ _dl_runtime_profile: movq %rsi, 40(%rsp) movq %rdi, 48(%rsp) movq %rbp, 56(%rsp) # Information for auditors. - leaq 96(%rsp), %rax + leaq 104(%rsp), %rax movq %rax, 64(%rsp) leaq 8(%rsp), %rcx - movq 96(%rsp), %rdx # Load return address if needed - movq 88(%rsp), %rsi # Copy args pushed by PLT in register. + movq 104(%rsp), %rdx # Load return address if needed + movq 96(%rsp), %rsi # Copy args pushed by PLT in register. movq %rsi,%r11 # Multiply by 24 addq %r11,%rsi addq %r11,%rsi shlq $3, %rsi - movq 80(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset + movq 88(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset leaq 72(%rsp), %r8 call _dl_profile_fixup # Call resolver. movq %rax, %r11 # Save return value @@ -95,14 +95,15 @@ _dl_runtime_profile: movq 32(%rsp), %rcx movq 40(%rsp), %rsi movq 48(%rsp), %rdi - addq $96,%rsp # Adjust stack - cfi_adjust_cfa_offset (-96) + addq $104,%rsp # Adjust stack + cfi_adjust_cfa_offset (-104) jmp *%r11 # Jump to function address. /* - +96 return address - +88 PLT2 - +80 PLT1 + +104 return address + +96 PLT2 + +88 PLT1 + +80 free +72 free +64 %rsp +56 %rbp @@ -112,14 +113,14 @@ _dl_runtime_profile: +24 %r9 +16 %r8 +8 %rdx - %esp %rax + %rsp %rax */ - cfi_adjust_cfa_offset (96) + cfi_adjust_cfa_offset (104) 1: movq %rbx, 72(%rsp) - cfi_rel_offset (1, 72) - leaq 104(%rsp), %rsi + cfi_rel_offset (rbx, 72) + leaq 112(%rsp), %rsi movq %rsp, %rbx - cfi_def_cfa_register (1) + cfi_def_cfa_register (%rbx) movq %r10, %rcx addq $8, %r10 andq $0xfffffffffffffff0, %r10 @@ -133,7 +134,7 @@ _dl_runtime_profile: movq 48(%rbx), %rdi call *%r11 movq %rbx, %rsp - cfi_def_cfa_register (7) + cfi_def_cfa_register (%rsp) subq $72, %rsp cfi_adjust_cfa_offset (72) movq %rsp, %rcx @@ -147,9 +148,10 @@ _dl_runtime_profile: fstpt 48(%rcx) fstpt 64(%rcx) /* - +168 return address - +160 PLT2 - +152 PLT1 + +176 return address + +168 PLT2 + +160 PLT1 + +152 free +144 free +136 %rsp +128 %rbp @@ -164,17 +166,17 @@ _dl_runtime_profile: +32 %xmm1 result +16 %xmm0 result +8 %rdx result - %esp %rax result + %rsp %rax result */ leaq 80(%rsp), %rdx movq 144(%rsp), %rbx - cfi_restore (1) - movq 160(%rsp), %rsi # Copy args pushed by PLT in register. + cfi_restore (rbx) + movq 168(%rsp), %rsi # Copy args pushed by PLT in register. movq %rsi,%r11 # Multiply by 24 addq %r11,%rsi addq %r11,%rsi shlq $3, %rsi - movq 152(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset + movq 160(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset call _dl_call_pltexit movq (%rsp), %rax movq 8(%rsp), %rdx @@ -182,8 +184,8 @@ _dl_runtime_profile: movups 32(%rsp), %xmm1 fldt 64(%rsp) fldt 48(%rsp) - addq $168, %rsp - cfi_adjust_cfa_offset (-168) + addq $176, %rsp + cfi_adjust_cfa_offset (-176) retq cfi_endproc .size _dl_runtime_profile, .-_dl_runtime_profile |