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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
| commit | ccd992355df7192993c666236047820244914598 (patch) | |
| tree | f00fea65147227b7743083c6148396f74cd66935 /src/runtime/cpuflags.go | |
| parent | Initial commit. (diff) | |
| download | golang-1.21-ccd992355df7192993c666236047820244914598.tar.xz golang-1.21-ccd992355df7192993c666236047820244914598.zip | |
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/cpuflags.go')
| -rw-r--r-- | src/runtime/cpuflags.go | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/runtime/cpuflags.go b/src/runtime/cpuflags.go new file mode 100644 index 0000000..bbe93c5 --- /dev/null +++ b/src/runtime/cpuflags.go @@ -0,0 +1,34 @@ +// 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. + +package runtime + +import ( + "internal/cpu" + "unsafe" +) + +// Offsets into internal/cpu records for use in assembly. +const ( + offsetX86HasAVX = unsafe.Offsetof(cpu.X86.HasAVX) + offsetX86HasAVX2 = unsafe.Offsetof(cpu.X86.HasAVX2) + offsetX86HasERMS = unsafe.Offsetof(cpu.X86.HasERMS) + offsetX86HasRDTSCP = unsafe.Offsetof(cpu.X86.HasRDTSCP) + + offsetARMHasIDIVA = unsafe.Offsetof(cpu.ARM.HasIDIVA) + + offsetMIPS64XHasMSA = unsafe.Offsetof(cpu.MIPS64X.HasMSA) +) + +var ( + // Set in runtime.cpuinit. + // TODO: deprecate these; use internal/cpu directly. + x86HasPOPCNT bool + x86HasSSE41 bool + x86HasFMA bool + + armHasVFPv4 bool + + arm64HasATOMICS bool +) |