diff options
Diffstat (limited to 'gnu-efi/gnu-efi-3.0/gnuefi/setjmp_x86_64.S')
| -rw-r--r-- | gnu-efi/gnu-efi-3.0/gnuefi/setjmp_x86_64.S | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/gnu-efi/gnu-efi-3.0/gnuefi/setjmp_x86_64.S b/gnu-efi/gnu-efi-3.0/gnuefi/setjmp_x86_64.S new file mode 100644 index 0000000..6ef9378 --- /dev/null +++ b/gnu-efi/gnu-efi-3.0/gnuefi/setjmp_x86_64.S @@ -0,0 +1,56 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2003 Free Software Foundation, Inc. + * + * This program 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 2 of the License, or + * (at your option) any later version. + * + * This program 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 this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#define EXT_C(sym) sym +#define FUNCTION(x) .globl EXT_C(x) ; .type EXT_C(x), @function ; EXT_C(x): + + .file "setjmp.S" + + .text + +/* + * int setjmp (jmp_buf env) + */ +FUNCTION(setjmp) + pop %rsi /* Return address, and adjust the stack */ + xor %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 longjmp (jmp_buf env, int val) + */ +FUNCTION(longjmp) + movl %esi, %eax + 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) + |