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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"
TEXT ·IndexByte(SB),NOSPLIT,$0-40
MOVV b_base+0(FP), R4
MOVV b_len+8(FP), R5
MOVBU c+24(FP), R6 // byte to find
MOVV R4, R7 // store base for later
ADDV R4, R5 // end
ADDV $-1, R4
loop:
ADDV $1, R4
BEQ R4, R5, notfound
MOVBU (R4), R8
BNE R6, R8, loop
SUBV R7, R4 // remove base
MOVV R4, ret+32(FP)
RET
notfound:
MOVV $-1, R4
MOVV R4, ret+32(FP)
RET
TEXT ·IndexByteString(SB),NOSPLIT,$0-32
MOVV s_base+0(FP), R4
MOVV s_len+8(FP), R5
MOVBU c+16(FP), R6 // byte to find
MOVV R4, R7 // store base for later
ADDV R4, R5 // end
ADDV $-1, R4
loop:
ADDV $1, R4
BEQ R4, R5, notfound
MOVBU (R4), R8
BNE R6, R8, loop
SUBV R7, R4 // remove base
MOVV R4, ret+24(FP)
RET
notfound:
MOVV $-1, R4
MOVV R4, ret+24(FP)
RET
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