grub/grub-core/lib/mips/relocator_asm.S

/*
 *  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>
#include <grub/cpu/kernel.h>
	
	.p2align	4	/* force 16-byte alignment */

	.set noreorder
	.set nomacro
	mips_attributes

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)
Split relocators from mips branch 2009-11-25 22:39:59 +00:00			`/*`
			`* 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>`
mips: Fix soft-float handling. Add -msoft-float alongside clang arguments to specify ABI. Specify ABI in asm files explicitly. This trigers asm warning due to gcc failing to propagate -msoft-float but it's tolerable. 2015-02-23 21:33:28 +00:00			`#include <grub/cpu/kernel.h>`
Split relocators from mips branch 2009-11-25 22:39:59 +00:00
			`.p2align 4 /* force 16-byte alignment */`

asm part for mips decompressor 2010-09-21 08:14:08 +00:00			`.set noreorder`
			`.set nomacro`
mips: Fix soft-float handling. Add -msoft-float alongside clang arguments to specify ABI. Specify ABI in asm files explicitly. This trigers asm warning due to gcc failing to propagate -msoft-float but it's tolerable. 2015-02-23 21:33:28 +00:00			`mips_attributes`
asm part for mips decompressor 2010-09-21 08:14:08 +00:00
newreloc on yeeloong 2010-01-23 12:30:24 +00:00			`VARIABLE (grub_relocator_forward_start)`
Deduplicated cache handling. Fixed jump hatch being filled with random stuff 2009-11-28 22:34:48 +00:00			`move $a0, $9`
			`move $a1, $10`
Split relocators from mips branch 2009-11-25 22:39:59 +00:00
			`copycont1:`
			`lb $11,0($8)`
			`sb $11,0($9)`
Make mips/relocator_asm.S more readable 2010-02-05 20:02:24 +00:00			`addiu $8, $8, 1`
			`addiu $10, $10, -1`
Improved cache handling in mips 2009-11-26 21:20:06 +00:00			`bne $10, $0, copycont1`
asm part for mips decompressor 2010-09-21 08:14:08 +00:00			`addiu $9, $9, 1`
Split relocators from mips branch 2009-11-25 22:39:59 +00:00
Deduplicated cache handling. Fixed jump hatch being filled with random stuff 2009-11-28 22:34:48 +00:00			`#include "../../kern/mips/cache_flush.S"`
Improved cache handling in mips 2009-11-26 21:20:06 +00:00
newreloc on yeeloong 2010-01-23 12:30:24 +00:00			`VARIABLE (grub_relocator_forward_end)`
Split relocators from mips branch 2009-11-25 22:39:59 +00:00
newreloc on yeeloong 2010-01-23 12:30:24 +00:00			`VARIABLE (grub_relocator_backward_start)`
Deduplicated cache handling. Fixed jump hatch being filled with random stuff 2009-11-28 22:34:48 +00:00			`move $a0, $9`
			`move $a1, $10`
Split relocators from mips branch 2009-11-25 22:39:59 +00:00
			`addu $9, $9, $10`
			`addu $8, $8, $10`
			`/* Backward movsl is implicitly off-by-one. compensate that. */`
Make mips/relocator_asm.S more readable 2010-02-05 20:02:24 +00:00			`addiu $9, $9, -1`
			`addiu $8, $8, -1`
Split relocators from mips branch 2009-11-25 22:39:59 +00:00			`copycont2:`
			`lb $11,0($8)`
			`sb $11,0($9)`
Make mips/relocator_asm.S more readable 2010-02-05 20:02:24 +00:00			`addiu $8, $8, -1`
			`addiu $10, $10, -1`
Improved cache handling in mips 2009-11-26 21:20:06 +00:00			`bne $10, $0, copycont2`
asm part for mips decompressor 2010-09-21 08:14:08 +00:00			`addiu $9, $9, -1`
Improved cache handling in mips 2009-11-26 21:20:06 +00:00
Deduplicated cache handling. Fixed jump hatch being filled with random stuff 2009-11-28 22:34:48 +00:00			`#include "../../kern/mips/cache_flush.S"`
Improved cache handling in mips 2009-11-26 21:20:06 +00:00
newreloc on yeeloong 2010-01-23 12:30:24 +00:00			`VARIABLE (grub_relocator_backward_end)`