| 1 | /* Copyright 2011-2012 Nicholas J. Kain, licensed under standard MIT license */ |
| 2 | .global __setjmp |
| 3 | .global _setjmp |
| 4 | .global setjmp |
| 5 | .type __setjmp,@function |
| 6 | .type _setjmp,@function |
| 7 | .type setjmp,@function |
| 8 | __setjmp: |
| 9 | _setjmp: |
| 10 | setjmp: |
| 11 | mov %rbx,(%rdi) /* rdi is jmp_buf, move registers onto it */ |
| 12 | mov %rbp,8(%rdi) |
| 13 | mov %r12,16(%rdi) |
| 14 | mov %r13,24(%rdi) |
| 15 | mov %r14,32(%rdi) |
| 16 | mov %r15,40(%rdi) |
| 17 | lea 8(%rsp),%rdx /* this is our rsp WITHOUT current ret addr */ |
| 18 | mov %rdx,48(%rdi) |
| 19 | mov (%rsp),%rdx /* save return addr ptr for new rip */ |
| 20 | mov %rdx,56(%rdi) |
| 21 | xor %eax,%eax /* always return 0 */ |
| 22 | ret |