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