github.com/SandwichDev/go-internals@v0.0.0-20210605002614-12311ac6b2c5/bytealg/equal_mipsx.s (about)

     1  // Copyright 2018 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build mips mipsle
     6  
     7  #include "go_asm.h"
     8  #include "textflag.h"
     9  
    10  #define	REGCTXT	R22
    11  
    12  // memequal(a, b unsafe.Pointer, size uintptr) bool
    13  TEXT runtime·memequal(SB),NOSPLIT,$0-13
    14  	MOVW	a+0(FP), R1
    15  	MOVW	b+4(FP), R2
    16  	BEQ	R1, R2, eq
    17  	MOVW	size+8(FP), R3
    18  	ADDU	R1, R3, R4
    19  loop:
    20  	BNE	R1, R4, test
    21  	MOVW	$1, R1
    22  	MOVB	R1, ret+12(FP)
    23  	RET
    24  test:
    25  	MOVBU	(R1), R6
    26  	ADDU	$1, R1
    27  	MOVBU	(R2), R7
    28  	ADDU	$1, R2
    29  	BEQ	R6, R7, loop
    30  
    31  	MOVB	R0, ret+12(FP)
    32  	RET
    33  eq:
    34  	MOVW	$1, R1
    35  	MOVB	R1, ret+12(FP)
    36  	RET
    37  
    38  // memequal_varlen(a, b unsafe.Pointer) bool
    39  TEXT runtime·memequal_varlen(SB),NOSPLIT,$0-9
    40  	MOVW	a+0(FP), R1
    41  	MOVW	b+4(FP), R2
    42  	BEQ	R1, R2, eq
    43  	MOVW	4(REGCTXT), R3	// compiler stores size at offset 4 in the closure
    44  	ADDU	R1, R3, R4
    45  loop:
    46  	BNE	R1, R4, test
    47  	MOVW	$1, R1
    48  	MOVB	R1, ret+8(FP)
    49  	RET
    50  test:
    51  	MOVBU	(R1), R6
    52  	ADDU	$1, R1
    53  	MOVBU	(R2), R7
    54  	ADDU	$1, R2
    55  	BEQ	R6, R7, loop
    56  
    57  	MOVB	R0, ret+8(FP)
    58  	RET
    59  eq:
    60  	MOVW	$1, R1
    61  	MOVB	R1, ret+8(FP)
    62  	RET