diff options
Diffstat (limited to 'sysdeps/x86_64/dl-machine.h')
| -rw-r--r-- | sysdeps/x86_64/dl-machine.h | 73 |
1 files changed, 43 insertions, 30 deletions
diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h index c2eff579eb..964a4b422b 100644 --- a/sysdeps/x86_64/dl-machine.h +++ b/sysdeps/x86_64/dl-machine.h @@ -24,6 +24,7 @@ #define ELF_MACHINE_NAME "x86_64" #include <sys/param.h> +#include <sysdep.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int __attribute__ ((unused)) @@ -136,14 +137,17 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) .globl _dl_runtime_resolve\n\ .type _dl_runtime_resolve, @function\n\ .align 16\n\ + " CFI_STARTPROC "\n\ _dl_runtime_resolve:\n\ - pushq %rax # Preserve registers otherwise clobbered.\n\ - pushq %rcx\n\ - pushq %rdx\n\ - pushq %rsi\n\ - pushq %rdi\n\ - pushq %r8\n\ - pushq %r9\n\ + subq $56,%rsp\n\ + " CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\ + movq %rax,(%rsp) # Preserve registers otherwise clobbered.\n\ + movq %rcx,8(%rsp)\n\ + movq %rdx,16(%rsp)\n\ + movq %rsi,24(%rsp)\n\ + movq %rdi,32(%rsp)\n\ + movq %r8,40(%rsp)\n\ + movq %r9,48(%rsp)\n\ movq 64(%rsp), %rsi # Copy args pushed by PLT in register.\n\ movq %rsi,%r11 # Multiply by 24\n\ addq %r11,%rsi\n\ @@ -152,28 +156,33 @@ _dl_runtime_resolve:\n\ movq 56(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset\n\ call fixup # Call resolver.\n\ movq %rax, %r11 # Save return value\n\ - popq %r9 # Get register content back.\n\ - popq %r8\n\ - popq %rdi\n\ - popq %rsi\n\ - popq %rdx\n\ - popq %rcx\n\ - popq %rax\n\ - addq $16,%rsp # Adjust stack\n\ + movq 48(%rsp),%r9 # Get register content back.\n\ + movq 40(%rsp),%r8\n\ + movq 32(%rsp),%rdi\n\ + movq 24(%rsp),%rsi\n\ + movq 16(%rsp),%rdx\n\ + movq 8(%rsp),%rcx\n\ + movq (%rsp),%rax\n\ + addq $72,%rsp # Adjust stack(PLT did 2 pushes)\n\ + " CFI_ADJUST_CFA_OFFSET(-72)" \n\ jmp *%r11 # Jump to function address.\n\ + " CFI_ENDPROC "\n\ .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\ \n\ .globl _dl_runtime_profile\n\ .type _dl_runtime_profile, @function\n\ .align 16\n\ + " CFI_STARTPROC "\n\ _dl_runtime_profile:\n\ - pushq %rax # Preserve registers otherwise clobbered.\n\ - pushq %rcx\n\ - pushq %rdx\n\ - pushq %rsi\n\ - pushq %rdi\n\ - pushq %r8\n\ - pushq %r9\n\ + subq $56,%rsp\n\ + " CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\ + movq %rax,(%rsp) # Preserve registers otherwise clobbered.\n\ + movq %rcx,8(%rsp)\n\ + movq %rdx,16(%rsp)\n\ + movq %rsi,24(%rsp)\n\ + movq %rdi,32(%rsp)\n\ + movq %r8,40(%rsp)\n\ + movq %r9,48(%rsp)\n\ movq 72(%rsp), %rdx # Load return address if needed\n\ movq 64(%rsp), %rsi # Copy args pushed by PLT in register.\n\ movq %rsi,%r11 # Multiply by 24\n\ @@ -183,15 +192,17 @@ _dl_runtime_profile:\n\ movq 56(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset\n\ call profile_fixup # Call resolver.\n\ movq %rax, %r11 # Save return value\n\ - popq %r9 # Get register content back.\n\ - popq %r8\n\ - popq %rdi\n\ - popq %rsi\n\ - popq %rdx\n\ - popq %rcx\n\ - popq %rax\n\ - addq $16,%rsp # Adjust stack\n\ + movq 48(%rsp),%r9 # Get register content back.\n\ + movq 40(%rsp),%r8\n\ + movq 32(%rsp),%rdi\n\ + movq 24(%rsp),%rsi\n\ + movq 16(%rsp),%rdx\n\ + movq 8(%rsp),%rcx\n\ + movq (%rsp),%rax\n\ + addq $72,%rsp # Adjust stack\n\ + " CFI_ADJUST_CFA_OFFSET(-72)"\n\ jmp *%r11 # Jump to function address.\n\ + " CFI_ENDPROC "\n\ .size _dl_runtime_profile, .-_dl_runtime_profile\n\ .previous\n\ "); @@ -203,6 +214,7 @@ _dl_runtime_profile:\n\ .type _dl_runtime_resolve, @function\n\ .type _dl_runtime_profile, @function\n\ .align 16\n\ + " CFI_STARTPROC "\n\ _dl_runtime_resolve:\n\ _dl_runtime_profile:\n\ pushq %rax # Preserve registers otherwise clobbered.\n\ @@ -229,6 +241,7 @@ _dl_runtime_profile:\n\ popq %rax\n\ addq $16,%rsp # Adjust stack\n\ jmp *%r11 # Jump to function address.\n\ + " CFI_ENDPROC "\n\ .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\ .size _dl_runtime_profile, .-_dl_runtime_profile\n\ .previous\n\ |