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.section .text
.global setjmp
.type setjmp, @function
// int setjmp(jmp_buf env);
setjmp:
mov %rbx, 0(%rdi)
mov %rbp, 16(%rdi)
mov %r12, 24(%rdi)
mov %r13, 32(%rdi)
mov %r14, 40(%rdi)
mov %r15, 48(%rdi)
/* save registers as if after a ret */
lea 8(%rsp), %rax
mov %rax, 8(%rdi)
mov (%rsp), %rax
mov %rax, 56(%rdi)
xor %rax, %rax
mov 8(%rdi), %rsp
jmp *56(%rdi)
ret
.global longjmp
.type longjmp, @function
// _Noreturn void longjmp(jmp_buf env, int val);
longjmp:
mov %rsi, %rax
cmp $1, %rax /* carry set as for %rax - 1 - so, 1 only if %rax == 0 */
adc $0, %rax
1: mov 0(%rdi), %rbx
mov 8(%rdi), %rsp
mov 16(%rdi), %rbp
mov 24(%rdi), %r12
mov 32(%rdi), %r13
mov 40(%rdi), %r14
mov 48(%rdi), %r15
jmp *56(%rdi)
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