blob: 70d579d5d434eadb178576ac688eb730f232eea4 [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 mips mipsle
#include "go_asm.h"
#include "textflag.h"
#define REGCTXT R22
TEXT ·Equal(SB),NOSPLIT,$0-25
MOVW a_len+4(FP), R3
MOVW b_len+16(FP), R4
BNE R3, R4, noteq // unequal lengths are not equal
MOVW a_base+0(FP), R1
MOVW b_base+12(FP), R2
ADDU R1, R3 // end
loop:
BEQ R1, R3, equal // reached the end
MOVBU (R1), R6
ADDU $1, R1
MOVBU (R2), R7
ADDU $1, R2
BEQ R6, R7, loop
noteq:
MOVB R0, ret+24(FP)
RET
equal:
MOVW $1, R1
MOVB R1, ret+24(FP)
RET
// memequal(a, b unsafe.Pointer, size uintptr) bool
TEXT runtime·memequal(SB),NOSPLIT,$0-13
MOVW a+0(FP), R1
MOVW b+4(FP), R2
BEQ R1, R2, eq
MOVW size+8(FP), R3
ADDU R1, R3, R4
loop:
BNE R1, R4, test
MOVW $1, R1
MOVB R1, ret+12(FP)
RET
test:
MOVBU (R1), R6
ADDU $1, R1
MOVBU (R2), R7
ADDU $1, R2
BEQ R6, R7, loop
MOVB R0, ret+12(FP)
RET
eq:
MOVW $1, R1
MOVB R1, ret+12(FP)
RET
// memequal_varlen(a, b unsafe.Pointer) bool
TEXT runtime·memequal_varlen(SB),NOSPLIT,$0-9
MOVW a+0(FP), R1
MOVW b+4(FP), R2
BEQ R1, R2, eq
MOVW 4(REGCTXT), R3 // compiler stores size at offset 4 in the closure
ADDU R1, R3, R4
loop:
BNE R1, R4, test
MOVW $1, R1
MOVB R1, ret+8(FP)
RET
test:
MOVBU (R1), R6
ADDU $1, R1
MOVBU (R2), R7
ADDU $1, R2
BEQ R6, R7, loop
MOVB R0, ret+8(FP)
RET
eq:
MOVW $1, R1
MOVB R1, ret+8(FP)
RET