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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
| commit | 73df946d56c74384511a194dd01dbe099584fd1a (patch) | |
| tree | fd0bcea490dd81327ddfbb31e215439672c9a068 /src/runtime/internal/sys/intrinsics_386.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.tar.xz golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.zip | |
Adding upstream version 1.16.10.upstream/1.16.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/internal/sys/intrinsics_386.s')
| -rw-r--r-- | src/runtime/internal/sys/intrinsics_386.s | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/runtime/internal/sys/intrinsics_386.s b/src/runtime/internal/sys/intrinsics_386.s new file mode 100644 index 0000000..784b246 --- /dev/null +++ b/src/runtime/internal/sys/intrinsics_386.s @@ -0,0 +1,58 @@ +// Copyright 2016 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 "textflag.h" + +TEXT runtime∕internal∕sys·Ctz64(SB), NOSPLIT, $0-12 + // Try low 32 bits. + MOVL x_lo+0(FP), AX + BSFL AX, AX + JZ tryhigh + MOVL AX, ret+8(FP) + RET + +tryhigh: + // Try high 32 bits. + MOVL x_hi+4(FP), AX + BSFL AX, AX + JZ none + ADDL $32, AX + MOVL AX, ret+8(FP) + RET + +none: + // No bits are set. + MOVL $64, ret+8(FP) + RET + +TEXT runtime∕internal∕sys·Ctz32(SB), NOSPLIT, $0-8 + MOVL x+0(FP), AX + BSFL AX, AX + JNZ 2(PC) + MOVL $32, AX + MOVL AX, ret+4(FP) + RET + +TEXT runtime∕internal∕sys·Ctz8(SB), NOSPLIT, $0-8 + MOVBLZX x+0(FP), AX + BSFL AX, AX + JNZ 2(PC) + MOVL $8, AX + MOVL AX, ret+4(FP) + RET + +TEXT runtime∕internal∕sys·Bswap64(SB), NOSPLIT, $0-16 + MOVL x_lo+0(FP), AX + MOVL x_hi+4(FP), BX + BSWAPL AX + BSWAPL BX + MOVL BX, ret_lo+8(FP) + MOVL AX, ret_hi+12(FP) + RET + +TEXT runtime∕internal∕sys·Bswap32(SB), NOSPLIT, $0-8 + MOVL x+0(FP), AX + BSWAPL AX + MOVL AX, ret+4(FP) + RET |