github.com/sandwichdev/go-internals@v0.0.0-20210605002614-12311ac6b2c5/bytealg/indexbyte_mips64x.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 mips64 mips64le
     6  
     7  #include "go_asm.h"
     8  #include "textflag.h"
     9  
    10  TEXT ·IndexByte(SB),NOSPLIT,$0-40
    11  	MOVV	b_base+0(FP), R1
    12  	MOVV	b_len+8(FP), R2
    13  	MOVBU	c+24(FP), R3	// byte to find
    14  	MOVV	R1, R4		// store base for later
    15  	ADDV	R1, R2		// end
    16  	ADDV	$-1, R1
    17  
    18  loop:
    19  	ADDV	$1, R1
    20  	BEQ	R1, R2, notfound
    21  	MOVBU	(R1), R5
    22  	BNE	R3, R5, loop
    23  
    24  	SUBV	R4, R1		// remove base
    25  	MOVV	R1, ret+32(FP)
    26  	RET
    27  
    28  notfound:
    29  	MOVV	$-1, R1
    30  	MOVV	R1, ret+32(FP)
    31  	RET
    32  
    33  TEXT ·IndexByteString(SB),NOSPLIT,$0-32
    34  	MOVV	s_base+0(FP), R1
    35  	MOVV	s_len+8(FP), R2
    36  	MOVBU	c+16(FP), R3	// byte to find
    37  	MOVV	R1, R4		// store base for later
    38  	ADDV	R1, R2		// end
    39  	ADDV	$-1, R1
    40  
    41  loop:
    42  	ADDV	$1, R1
    43  	BEQ	R1, R2, notfound
    44  	MOVBU	(R1), R5
    45  	BNE	R3, R5, loop
    46  
    47  	SUBV	R4, R1		// remove base
    48  	MOVV	R1, ret+24(FP)
    49  	RET
    50  
    51  notfound:
    52  	MOVV	$-1, R1
    53  	MOVV	R1, ret+24(FP)
    54  	RET