| // 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 | |
| PCALIGN $16 | |
| 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 | |
| PCALIGN $16 | |
| 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 |