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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/vlop_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/vlop_386.s')
| -rw-r--r-- | src/runtime/vlop_386.s | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/runtime/vlop_386.s b/src/runtime/vlop_386.s new file mode 100644 index 0000000..b478ff8 --- /dev/null +++ b/src/runtime/vlop_386.s @@ -0,0 +1,56 @@ +// Inferno's libkern/vlop-386.s +// https://bitbucket.org/inferno-os/inferno-os/src/master/libkern/vlop-386.s +// +// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. +// Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved. +// Portions Copyright 2009 The Go Authors. All rights reserved. +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +#include "textflag.h" + +/* + * C runtime for 64-bit divide. + */ + +// runtime·_mul64x32(lo64 *uint64, a uint64, b uint32) (hi32 uint32) +// sets *lo64 = low 64 bits of 96-bit product a*b; returns high 32 bits. +TEXT runtime·_mul64by32(SB), NOSPLIT, $0 + MOVL lo64+0(FP), CX + MOVL a_lo+4(FP), AX + MULL b+12(FP) + MOVL AX, 0(CX) + MOVL DX, BX + MOVL a_hi+8(FP), AX + MULL b+12(FP) + ADDL AX, BX + ADCL $0, DX + MOVL BX, 4(CX) + MOVL DX, AX + MOVL AX, hi32+16(FP) + RET + +TEXT runtime·_div64by32(SB), NOSPLIT, $0 + MOVL r+12(FP), CX + MOVL a_lo+0(FP), AX + MOVL a_hi+4(FP), DX + DIVL b+8(FP) + MOVL DX, 0(CX) + MOVL AX, q+16(FP) + RET |