blob: a75b957e8b50ee2747544415ada82e219673ae86 [file] [log] [blame]
// Copyright 2018 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.
// +build mips64 mips64le
#include "go_asm.h"
#include "textflag.h"
#define REGCTXT R22
TEXT ·Equal(SB),NOSPLIT,$0-49
MOVV a_len+8(FP), R3
MOVV b_len+32(FP), R4
BNE R3, R4, noteq // unequal lengths are not equal
MOVV a_base+0(FP), R1
MOVV b_base+24(FP), R2
ADDV R1, R3 // end
loop:
BEQ R1, R3, equal // reached the end
MOVBU (R1), R6
ADDV $1, R1
MOVBU (R2), R7
ADDV $1, R2
BEQ R6, R7, loop
noteq:
MOVB R0, ret+48(FP)
RET
equal:
MOVV $1, R1
MOVB R1, ret+48(FP)
RET
// memequal(a, b unsafe.Pointer, size uintptr) bool
TEXT runtime·memequal(SB),NOSPLIT|NOFRAME,$0-25
MOVV a+0(FP), R1
MOVV b+8(FP), R2
BEQ R1, R2, eq
MOVV size+16(FP), R3
ADDV R1, R3, R4
loop:
BNE R1, R4, test
MOVV $1, R1
MOVB R1, ret+24(FP)
RET
test:
MOVBU (R1), R6
ADDV $1, R1
MOVBU (R2), R7
ADDV $1, R2
BEQ R6, R7, loop
MOVB R0, ret+24(FP)
RET
eq:
MOVV $1, R1
MOVB R1, ret+24(FP)
RET
// memequal_varlen(a, b unsafe.Pointer) bool
TEXT runtime·memequal_varlen(SB),NOSPLIT,$40-17
MOVV a+0(FP), R1
MOVV b+8(FP), R2
BEQ R1, R2, eq
MOVV 8(REGCTXT), R3 // compiler stores size at offset 8 in the closure
MOVV R1, 8(R29)
MOVV R2, 16(R29)
MOVV R3, 24(R29)
JAL runtime·memequal(SB)
MOVBU 32(R29), R1
MOVB R1, ret+16(FP)
RET
eq:
MOVV $1, R1
MOVB R1, ret+16(FP)
RET