2017-09-15 07:24:53 +00:00
|
|
|
/* Copyright 2011-2012 Nicholas J. Kain, licensed under standard MIT license */
|
2017-10-07 17:44:17 +00:00
|
|
|
.global musl_glibc_longjmp
|
|
|
|
|
.type musl_glibc_longjmp,@function
|
|
|
|
|
musl_glibc_longjmp:
|
|
|
|
|
mov 0x30(%rdi),%r8
|
|
|
|
|
mov 0x8(%rdi),%r9
|
|
|
|
|
mov 0x38(%rdi),%rdx
|
|
|
|
|
ror $0x11,%r8
|
|
|
|
|
xor %fs:0x30,%r8 /* this ends up being the stack pointer */
|
|
|
|
|
ror $0x11,%r9
|
|
|
|
|
xor %fs:0x30,%r9
|
|
|
|
|
ror $0x11,%rdx
|
|
|
|
|
xor %fs:0x30,%rdx /* this is the instruction pointer */
|
|
|
|
|
mov (%rdi),%rbx /* rdi is the jmp_buf, restore regs from it */
|
|
|
|
|
mov 0x10(%rdi),%r12
|
|
|
|
|
mov 0x18(%rdi),%r13
|
|
|
|
|
mov 0x20(%rdi),%r14
|
|
|
|
|
mov 0x28(%rdi),%r15
|
|
|
|
|
mov %esi,%eax
|
|
|
|
|
mov %r8,%rsp
|
|
|
|
|
mov %r9,%rbp
|
|
|
|
|
jmpq *%rdx /* goto saved address without altering rsp */
|
