src/setjmp/x32/longjmp.s

   1 /* Copyright 2011-2012 Nicholas J. Kain, licensed under standard MIT license */
   2 .global _longjmp
   3 .global longjmp
   4 .type _longjmp,@function
   5 .type longjmp,@function
   6 _longjmp:
   7 longjmp:
   8         xor %eax,%eax
   9         cmp $1,%esi             /* CF = val ? 0 : 1 */
  10         adc %esi,%eax           /* eax = val + !val */
  11         mov (%rdi),%rbx         /* rdi is the jmp_buf, restore regs from it */
  12         mov 8(%rdi),%rbp
  13         mov 16(%rdi),%r12
  14         mov 24(%rdi),%r13
  15         mov 32(%rdi),%r14
  16         mov 40(%rdi),%r15
  17         mov 48(%rdi),%rsp
  18         jmp *56(%rdi)           /* goto saved address without altering rsp */