68 lines
1.3 KiB
ArmAsm
68 lines
1.3 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* linux/arch/arm/lib/memcpy.S
|
|
*
|
|
* Author: Nicolas Pitre
|
|
* Created: Sep 28, 2005
|
|
* Copyright: MontaVista Software, Inc.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/assembler.h>
|
|
#include <asm/unwind.h>
|
|
|
|
#define LDR1W_SHIFT 0
|
|
#define STR1W_SHIFT 0
|
|
|
|
.macro ldr1w ptr reg abort
|
|
W(ldr) \reg, [\ptr], #4
|
|
.endm
|
|
|
|
.macro ldr4w ptr reg1 reg2 reg3 reg4 abort
|
|
ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4}
|
|
.endm
|
|
|
|
.macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
|
|
ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
|
|
.endm
|
|
|
|
.macro ldr1b ptr reg cond=al abort
|
|
ldrb\cond \reg, [\ptr], #1
|
|
.endm
|
|
|
|
.macro str1w ptr reg abort
|
|
W(str) \reg, [\ptr], #4
|
|
.endm
|
|
|
|
.macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
|
|
stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
|
|
.endm
|
|
|
|
.macro str1b ptr reg cond=al abort
|
|
strb\cond \reg, [\ptr], #1
|
|
.endm
|
|
|
|
.macro enter reg1 reg2
|
|
stmdb sp!, {r0, \reg1, \reg2}
|
|
.endm
|
|
|
|
.macro usave reg1 reg2
|
|
UNWIND( .save {r0, \reg1, \reg2} )
|
|
.endm
|
|
|
|
.macro exit reg1 reg2
|
|
ldmfd sp!, {r0, \reg1, \reg2}
|
|
.endm
|
|
|
|
.text
|
|
|
|
/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
|
|
|
|
ENTRY(mmiocpy)
|
|
ENTRY(memcpy)
|
|
|
|
#include "copy_template.S"
|
|
|
|
ENDPROC(memcpy)
|
|
ENDPROC(mmiocpy)
|