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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
| commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
| tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /src/internal/bytealg/equal_wasm.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip | |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/internal/bytealg/equal_wasm.s')
| -rw-r--r-- | src/internal/bytealg/equal_wasm.s | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/internal/bytealg/equal_wasm.s b/src/internal/bytealg/equal_wasm.s new file mode 100644 index 0000000..a2b76c1 --- /dev/null +++ b/src/internal/bytealg/equal_wasm.s @@ -0,0 +1,77 @@ +// Copyright 2018 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" + +// memequal(p, q unsafe.Pointer, size uintptr) bool +TEXT runtime·memequal(SB), NOSPLIT, $0-25 + Get SP + I64Load a+0(FP) + I64Load b+8(FP) + I64Load size+16(FP) + Call memeqbody<>(SB) + I64Store8 ret+24(FP) + RET + +// memequal_varlen(a, b unsafe.Pointer) bool +TEXT runtime·memequal_varlen(SB), NOSPLIT, $0-17 + Get SP + I64Load a+0(FP) + I64Load b+8(FP) + I64Load 8(CTXT) // compiler stores size at offset 8 in the closure + Call memeqbody<>(SB) + I64Store8 ret+16(FP) + RET + +// params: a, b, len +// ret: 0/1 +TEXT memeqbody<>(SB), NOSPLIT, $0-0 + Get R0 + Get R1 + I64Eq + If + I64Const $1 + Return + End + +loop: + Loop + Get R2 + I64Eqz + If + I64Const $1 + Return + End + + Get R0 + I32WrapI64 + I64Load8U $0 + Get R1 + I32WrapI64 + I64Load8U $0 + I64Ne + If + I64Const $0 + Return + End + + Get R0 + I64Const $1 + I64Add + Set R0 + + Get R1 + I64Const $1 + I64Add + Set R1 + + Get R2 + I64Const $1 + I64Sub + Set R2 + + Br loop + End + UNDEF |