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/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/asm.h>
/*
* Copy a buffer from src to dest (alignment handled by the hardware)
*
* Parameters:
* x0 - dest
* x1 - src
* x2 - n
* Returns:
* x0 - dest
*/
ENTRY(memcpy)
mov x4, x0
subs x2, x2, #8
b.mi 2f
1: ldr x3, [x1], #8
subs x2, x2, #8
str x3, [x4], #8
b.pl 1b
2: adds x2, x2, #4
b.mi 3f
ldr w3, [x1], #4
sub x2, x2, #4
str w3, [x4], #4
3: adds x2, x2, #2
b.mi 4f
ldrh w3, [x1], #2
sub x2, x2, #2
strh w3, [x4], #2
4: adds x2, x2, #1
b.mi 5f
ldrb w3, [x1]
strb w3, [x4]
5: ret
ENDPROC(memcpy)
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