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// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "go_asm.h"
#include "textflag.h"
#define REGCTXT R29
// memequal(a, b unsafe.Pointer, size uintptr) bool
TEXT runtime·memequal(SB),NOSPLIT|NOFRAME,$0-25
MOVV a+0(FP), R4
MOVV b+8(FP), R5
BEQ R4, R5, eq
MOVV size+16(FP), R6
ADDV R4, R6, R7
loop:
BNE R4, R7, test
MOVV $1, R4
MOVB R4, ret+24(FP)
RET
test:
MOVBU (R4), R9
ADDV $1, R4
MOVBU (R5), R10
ADDV $1, R5
BEQ R9, R10, loop
MOVB R0, ret+24(FP)
RET
eq:
MOVV $1, R4
MOVB R4, ret+24(FP)
RET
// memequal_varlen(a, b unsafe.Pointer) bool
TEXT runtime·memequal_varlen(SB),NOSPLIT,$40-17
MOVV a+0(FP), R4
MOVV b+8(FP), R5
BEQ R4, R5, eq
MOVV 8(REGCTXT), R6 // compiler stores size at offset 8 in the closure
MOVV R4, 8(R3)
MOVV R5, 16(R3)
MOVV R6, 24(R3)
JAL runtime·memequal(SB)
MOVBU 32(R3), R4
MOVB R4, ret+16(FP)
RET
eq:
MOVV $1, R4
MOVB R4, ret+16(FP)
RET
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