diff options
Diffstat (limited to 'src/setjmp/x32/setjmp.s')
| -rw-r--r-- | src/setjmp/x32/setjmp.s | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/setjmp/x32/setjmp.s b/src/setjmp/x32/setjmp.s new file mode 100644 index 00000000..98f58b8d --- /dev/null +++ b/src/setjmp/x32/setjmp.s @@ -0,0 +1,22 @@ +/* Copyright 2011-2012 Nicholas J. Kain, licensed under standard MIT license */ +.global __setjmp +.global _setjmp +.global setjmp +.type __setjmp,@function +.type _setjmp,@function +.type setjmp,@function +__setjmp: +_setjmp: +setjmp: + mov %rbx,(%rdi) /* rdi is jmp_buf, move registers onto it */ + mov %rbp,8(%rdi) + mov %r12,16(%rdi) + mov %r13,24(%rdi) + mov %r14,32(%rdi) + mov %r15,40(%rdi) + lea 8(%rsp),%rdx /* this is our rsp WITHOUT current ret addr */ + mov %rdx,48(%rdi) + mov (%rsp),%rdx /* save return addr ptr for new rip */ + mov %rdx,56(%rdi) + xor %rax,%rax /* always return 0 */ + ret |