diff options
Diffstat (limited to 'src/internal/bytealg/indexbyte_loong64.s')
| -rw-r--r-- | src/internal/bytealg/indexbyte_loong64.s | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/internal/bytealg/indexbyte_loong64.s b/src/internal/bytealg/indexbyte_loong64.s new file mode 100644 index 0000000..baa9c86 --- /dev/null +++ b/src/internal/bytealg/indexbyte_loong64.s @@ -0,0 +1,52 @@ +// 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 |