diff options
Diffstat (limited to 'grub-core/lib/i386/setjmp.S')
| -rw-r--r-- | grub-core/lib/i386/setjmp.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/grub-core/lib/i386/setjmp.S b/grub-core/lib/i386/setjmp.S new file mode 100644 index 0000000..0b0740f --- /dev/null +++ b/grub-core/lib/i386/setjmp.S @@ -0,0 +1,59 @@ +/* + * 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 + +/* + * int grub_setjmp (grub_jmp_buf env) + */ +FUNCTION(grub_setjmp) + movl %ebx, 0(%eax) /* EBX */ + movl %esi, 4(%eax) /* ESI */ + movl %edi, 8(%eax) /* EDI */ + movl %ebp, 12(%eax) /* EBP */ + popl %ecx + movl %esp, 16(%eax) /* ESP */ + movl %ecx, 20(%eax) /* EIP */ + xorl %eax, %eax + jmp *%ecx + + +/* + * int grub_longjmp (grub_jmp_buf env, int val) + */ +FUNCTION(grub_longjmp) + movl 0(%eax), %ebx + movl 4(%eax), %esi + movl 8(%eax), %edi + movl 12(%eax), %ebp + movl 16(%eax), %esp + movl 20(%eax), %ecx + + movl %edx, %eax + testl %eax, %eax + jnz 1f + incl %eax +1: jmp *%ecx + |