hook-x86_64.S

   1 /* $Id$ */
   2
   3
   4 #define TRAMPOLINE_SIZE 13
   5
   6 #include "hook-arch-asm.h"
   7
   8 sigaction_trampoline:
   9 /* +0: */       lea     -0x20(%rdi), %eax
  10 /* +3: */       sub     $0xd0, %rsp
  11 /* +10: */      mov     %rsi, %rcx
  12 /* +13: */
  13                 .ifne   . - sigaction_trampoline - TRAMPOLINE_SIZE
  14                 .err
  15                 .endif
  16                 jmp     *sigaction_orig_libc_cont(%rip)
  17
  18 sigaction_trampoline_jmpdir:
  19 /* +0: */       mov     $0x0123456789abcdef,%rax
  20                 .set    sigaction_trampoline_jmpdir_vec, . - 8
  21                 /* Set it to `sigaction_trampoline' to define it as NULL,
  22                    simple value `0' would be relative and thus not NULL.  */
  23                 .set    sigaction_trampoline_jmpdir_base, sigaction_trampoline
  24 /* +10: */      jmpq    *%rax
  25 /* +12: */      nop
  26 /* +13: */
  27                 .ifne   . - sigaction_trampoline_jmpdir - TRAMPOLINE_SIZE
  28                 .err
  29                 .endif