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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:25:22 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:25:22 +0000 |
| commit | f6ad4dcef54c5ce997a4bad5a6d86de229015700 (patch) | |
| tree | 7cfa4e31ace5c2bd95c72b154d15af494b2bcbef /src/internal/bytealg/count_riscv64.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.22-f6ad4dcef54c5ce997a4bad5a6d86de229015700.tar.xz golang-1.22-f6ad4dcef54c5ce997a4bad5a6d86de229015700.zip | |
Adding upstream version 1.22.1.upstream/1.22.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/internal/bytealg/count_riscv64.s')
| -rw-r--r-- | src/internal/bytealg/count_riscv64.s | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/internal/bytealg/count_riscv64.s b/src/internal/bytealg/count_riscv64.s new file mode 100644 index 0000000..3f255cd --- /dev/null +++ b/src/internal/bytealg/count_riscv64.s @@ -0,0 +1,49 @@ +// Copyright 2020 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 ·Count<ABIInternal>(SB),NOSPLIT,$0-40 + // X10 = b_base + // X11 = b_len + // X12 = b_cap (unused) + // X13 = byte to count (want in X12) + AND $0xff, X13, X12 + MOV ZERO, X14 // count + ADD X10, X11 // end + + PCALIGN $16 +loop: + BEQ X10, X11, done + MOVBU (X10), X15 + ADD $1, X10 + BNE X12, X15, loop + ADD $1, X14 + JMP loop + +done: + MOV X14, X10 + RET + +TEXT ·CountString<ABIInternal>(SB),NOSPLIT,$0-32 + // X10 = s_base + // X11 = s_len + // X12 = byte to count + AND $0xff, X12 + MOV ZERO, X14 // count + ADD X10, X11 // end + + PCALIGN $16 +loop: + BEQ X10, X11, done + MOVBU (X10), X15 + ADD $1, X10 + BNE X12, X15, loop + ADD $1, X14 + JMP loop + +done: + MOV X14, X10 + RET |