mirror of
https://github.com/golang/sys.git
synced 2026-02-07 19:26:03 +03:00
b4e8571b14
The current implementation for ppc64{,le} only supports linux (through
HWCaps read from /proc/self/auxv) and fails to build e.g. on
aix/ppc64.
Change-Id: I5e1efe75c781fd08bc7bbe797df88295726ba62b
Reviewed-on: https://go-review.googlesource.com/c/162798
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
34 lines
803 B
Go
34 lines
803 B
Go
// 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.
|
|
|
|
// +build linux
|
|
// +build ppc64 ppc64le
|
|
|
|
package cpu
|
|
|
|
const cacheLineSize = 128
|
|
|
|
// HWCAP/HWCAP2 bits. These are exposed by the kernel.
|
|
const (
|
|
// ISA Level
|
|
_PPC_FEATURE2_ARCH_2_07 = 0x80000000
|
|
_PPC_FEATURE2_ARCH_3_00 = 0x00800000
|
|
|
|
// CPU features
|
|
_PPC_FEATURE2_DARN = 0x00200000
|
|
_PPC_FEATURE2_SCV = 0x00100000
|
|
)
|
|
|
|
func doinit() {
|
|
// HWCAP2 feature bits
|
|
PPC64.IsPOWER8 = isSet(hwCap2, _PPC_FEATURE2_ARCH_2_07)
|
|
PPC64.IsPOWER9 = isSet(hwCap2, _PPC_FEATURE2_ARCH_3_00)
|
|
PPC64.HasDARN = isSet(hwCap2, _PPC_FEATURE2_DARN)
|
|
PPC64.HasSCV = isSet(hwCap2, _PPC_FEATURE2_SCV)
|
|
}
|
|
|
|
func isSet(hwc uint, value uint) bool {
|
|
return hwc&value != 0
|
|
}
|