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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003,2007 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/symbol.h>
#include <grub/dl.h>
.file "setjmp.S"
GRUB_MOD_LICENSE "GPLv3+"
.text
/*
* jmp_buf:
* rbx rsp rbp r12 r13 r14 r15 rip
* 0 8 16 24 32 40 48 56
*/
/*
* int grub_setjmp (grub_jmp_buf env)
*/
FUNCTION(grub_setjmp)
pop %rsi /* Return address, and adjust the stack */
xorq %rax, %rax
movq %rbx, 0(%rdi) /* RBX */
movq %rsp, 8(%rdi) /* RSP */
push %rsi
movq %rbp, 16(%rdi) /* RBP */
movq %r12, 24(%rdi) /* R12 */
movq %r13, 32(%rdi) /* R13 */
movq %r14, 40(%rdi) /* R14 */
movq %r15, 48(%rdi) /* R15 */
movq %rsi, 56(%rdi) /* RSI */
ret
/*
* int grub_longjmp (grub_jmp_buf env, int val)
*/
FUNCTION(grub_longjmp)
movl %esi, %eax
orl %eax, %eax
jnz 1f
incl %eax
1:
movq (%rdi), %rbx
movq 8(%rdi), %rsp
movq 16(%rdi), %rbp
movq 24(%rdi), %r12
movq 32(%rdi), %r13
movq 40(%rdi), %r14
movq 48(%rdi), %r15
jmp *56(%rdi)
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