diff options
Diffstat (limited to 'grub-core/lib/mips/relocator_asm.S')
| -rw-r--r-- | grub-core/lib/mips/relocator_asm.S | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/grub-core/lib/mips/relocator_asm.S b/grub-core/lib/mips/relocator_asm.S new file mode 100644 index 0000000..1d142a4 --- /dev/null +++ b/grub-core/lib/mips/relocator_asm.S @@ -0,0 +1,61 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2009 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> + + .p2align 4 /* force 16-byte alignment */ + + .set noreorder + .set nomacro + +VARIABLE (grub_relocator_forward_start) + move $a0, $9 + move $a1, $10 + +copycont1: + lb $11,0($8) + sb $11,0($9) + addiu $8, $8, 1 + addiu $10, $10, -1 + bne $10, $0, copycont1 + addiu $9, $9, 1 + +#include "../../kern/mips/cache_flush.S" + +VARIABLE (grub_relocator_forward_end) + +VARIABLE (grub_relocator_backward_start) + move $a0, $9 + move $a1, $10 + + addu $9, $9, $10 + addu $8, $8, $10 + /* Backward movsl is implicitly off-by-one. compensate that. */ + addiu $9, $9, -1 + addiu $8, $8, -1 +copycont2: + lb $11,0($8) + sb $11,0($9) + addiu $8, $8, -1 + addiu $10, $10, -1 + bne $10, $0, copycont2 + addiu $9, $9, -1 + +#include "../../kern/mips/cache_flush.S" + +VARIABLE (grub_relocator_backward_end) |