diff options
Diffstat (limited to 'grub-core/lib/arm/setjmp.S')
-rw-r--r-- | grub-core/lib/arm/setjmp.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/grub-core/lib/arm/setjmp.S b/grub-core/lib/arm/setjmp.S new file mode 100644 index 0000000..e19f6c5 --- /dev/null +++ b/grub-core/lib/arm/setjmp.S @@ -0,0 +1,57 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2012 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" + .syntax unified +#if !defined (__thumb2__) + .arm +#define ARM(x...) x +#define THUMB(x...) +#else + .thumb +#define THUMB(x...) x +#define ARM(x...) +#endif + +GRUB_MOD_LICENSE "GPLv3+" + + .text + +/* + * int grub_setjmp (grub_jmp_buf env) + */ +FUNCTION(grub_setjmp) + THUMB( mov ip, sp ) + THUMB( stm r0, { r4-r11, ip, lr } ) + ARM( stm r0, { r4-r11, sp, lr } ) + mov r0, #0 + bx lr + +/* + * int grub_longjmp (grub_jmp_buf env, int val) + */ +FUNCTION(grub_longjmp) + THUMB( ldm r0, { r4-r11, ip, lr } ) + THUMB( mov sp, ip ) + ARM( ldm r0, { r4-r11, sp, lr } ) + movs r0, r1 + moveq r0, #1 + bx lr |