Adding upstream version 1.22.1.upstream/1.22.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/src/internal/cpu/cpu_ppc64x_linux.go b/src/internal/cpu/cpu_ppc64x_linux.go
new file mode 100644
index 0000000..9df82ca
--- /dev/null
+++ b/src/internal/cpu/cpu_ppc64x_linux.go
@@ -0,0 +1,33 @@
+// Copyright 2020 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.
+
+//go:build ppc64 || ppc64le
+
+package cpu
+
+// ppc64 doesn't have a 'cpuid' equivalent, so we rely on HWCAP/HWCAP2.
+// These are initialized by archauxv and should not be changed after they are
+// initialized.
+var HWCap uint
+var HWCap2 uint
+
+// HWCAP bits. These are exposed by Linux.
+const (
+	// ISA Level
+	hwcap2_ARCH_2_07 = 0x80000000
+	hwcap2_ARCH_3_00 = 0x00800000
+	hwcap2_ARCH_3_1  = 0x00040000
+
+	// CPU features
+	hwcap2_DARN = 0x00200000
+	hwcap2_SCV  = 0x00100000
+)
+
+func osinit() {
+	PPC64.IsPOWER8 = isSet(HWCap2, hwcap2_ARCH_2_07)
+	PPC64.IsPOWER9 = isSet(HWCap2, hwcap2_ARCH_3_00)
+	PPC64.IsPOWER10 = isSet(HWCap2, hwcap2_ARCH_3_1)
+	PPC64.HasDARN = isSet(HWCap2, hwcap2_DARN)
+	PPC64.HasSCV = isSet(HWCap2, hwcap2_SCV)
+}