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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:18:25 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:18:25 +0000 |
| commit | 109be507377fe7f6e8819ac94041d3fdcdf6fd2f (patch) | |
| tree | 2806a689f8fab4a2ec9fc949830ef270a91d667d /src/internal/bytealg/indexbyte_riscv64.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.19-109be507377fe7f6e8819ac94041d3fdcdf6fd2f.tar.xz golang-1.19-109be507377fe7f6e8819ac94041d3fdcdf6fd2f.zip | |
Adding upstream version 1.19.8.upstream/1.19.8upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/internal/bytealg/indexbyte_riscv64.s')
| -rw-r--r-- | src/internal/bytealg/indexbyte_riscv64.s | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/internal/bytealg/indexbyte_riscv64.s b/src/internal/bytealg/indexbyte_riscv64.s new file mode 100644 index 0000000..a203965 --- /dev/null +++ b/src/internal/bytealg/indexbyte_riscv64.s @@ -0,0 +1,73 @@ +// 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 + AND $0xff, X13 + 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 + AND $0xff, X12 + 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 |