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// Copyright 2019 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<ABIInternal>(SB),NOSPLIT,$0-40
#ifndef GOEXPERIMENT_regabiargs
MOV b_base+0(FP), X10
MOV b_len+8(FP), X11
MOVBU c+24(FP), X13 // byte to find
#endif
// X10 = b_base
// X11 = b_len
// X12 = b_cap (unused)
// X13 = byte to find
MOV X10, X12 // store base for later
ADD X10, X11 // end
ADD $-1, X10
loop:
ADD $1, X10
BEQ X10, X11, notfound
MOVBU (X10), X14
BNE X13, X14, loop
SUB X12, X10 // remove base
#ifndef GOEXPERIMENT_regabiargs
MOV X10, ret+32(FP)
#endif
RET
notfound:
MOV $-1, X10
#ifndef GOEXPERIMENT_regabiargs
MOV X10, ret+32(FP)
#endif
RET
TEXT ·IndexByteString<ABIInternal>(SB),NOSPLIT,$0-32
#ifndef GOEXPERIMENT_regabiargs
MOV s_base+0(FP), X10
MOV s_len+8(FP), X11
MOVBU c+16(FP), X12 // byte to find
#endif
// X10 = b_base
// X11 = b_len
// X12 = byte to find
MOV X10, X13 // store base for later
ADD X10, X11 // end
ADD $-1, X10
loop:
ADD $1, X10
BEQ X10, X11, notfound
MOVBU (X10), X14
BNE X12, X14, loop
SUB X13, X10 // remove base
#ifndef GOEXPERIMENT_regabiargs
MOV X10, ret+24(FP)
#endif
RET
notfound:
MOV $-1, X10
#ifndef GOEXPERIMENT_regabiargs
MOV X10, ret+24(FP)
#endif
RET
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