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 */
19