diff options
Diffstat (limited to 'src/internal/bytealg/indexbyte_loong64.s')
| -rw-r--r-- | src/internal/bytealg/indexbyte_loong64.s | 74 |
1 files changed, 74 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..03e0660 --- /dev/null +++ b/src/internal/bytealg/indexbyte_loong64.s @@ -0,0 +1,74 @@ +// 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<ABIInternal>(SB),NOSPLIT,$0-40 +#ifndef GOEXPERIMENT_regabiargs + MOVV b_base+0(FP), R4 + MOVV b_len+8(FP), R5 + MOVBU c+24(FP), R7 // byte to find +#endif + // R4 = b_base + // R5 = b_len + // R6 = b_cap (unused) + // R7 = byte to find + AND $0xff, R7 + MOVV R4, R6 // 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 R7, R8, loop + + SUBV R6, R4 // remove base +#ifndef GOEXPERIMENT_regabiargs + MOVV R4, ret+32(FP) +#endif + RET + +notfound: + MOVV $-1, R4 +#ifndef GOEXPERIMENT_regabiargs + MOVV R4, ret+32(FP) +#endif + RET + +TEXT ·IndexByteString<ABIInternal>(SB),NOSPLIT,$0-32 +#ifndef GOEXPERIMENT_regabiargs + MOVV s_base+0(FP), R4 + MOVV s_len+8(FP), R5 + MOVBU c+16(FP), R6 // byte to find +#endif + // R4 = s_base + // R5 = s_len + // 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 +#ifndef GOEXPERIMENT_regabiargs + MOVV R4, ret+24(FP) +#endif + RET + +notfound: + MOVV $-1, R4 +#ifndef GOEXPERIMENT_regabiargs + MOVV R4, ret+24(FP) +#endif + RET |