cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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memcpy.S (1298B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 *  linux/arch/arm/lib/memcpy.S
      4 *
      5 *  Author:	Nicolas Pitre
      6 *  Created:	Sep 28, 2005
      7 *  Copyright:	MontaVista Software, Inc.
      8 */
      9
     10#include <linux/linkage.h>
     11#include <asm/assembler.h>
     12#include <asm/unwind.h>
     13
     14#define LDR1W_SHIFT	0
     15#define STR1W_SHIFT	0
     16
     17	.macro ldr1w ptr reg abort
     18	W(ldr) \reg, [\ptr], #4
     19	.endm
     20
     21	.macro ldr4w ptr reg1 reg2 reg3 reg4 abort
     22	ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4}
     23	.endm
     24
     25	.macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
     26	ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
     27	.endm
     28
     29	.macro ldr1b ptr reg cond=al abort
     30	ldrb\cond \reg, [\ptr], #1
     31	.endm
     32
     33	.macro str1w ptr reg abort
     34	W(str) \reg, [\ptr], #4
     35	.endm
     36
     37	.macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
     38	stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
     39	.endm
     40
     41	.macro str1b ptr reg cond=al abort
     42	strb\cond \reg, [\ptr], #1
     43	.endm
     44
     45	.macro enter regs:vararg
     46UNWIND( .save	{r0, \regs}		)
     47	stmdb sp!, {r0, \regs}
     48	.endm
     49
     50	.macro exit regs:vararg
     51	ldmfd sp!, {r0, \regs}
     52	.endm
     53
     54	.text
     55
     56/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
     57
     58ENTRY(__memcpy)
     59ENTRY(mmiocpy)
     60WEAK(memcpy)
     61
     62#include "copy_template.S"
     63
     64ENDPROC(memcpy)
     65ENDPROC(mmiocpy)
     66ENDPROC(__memcpy)