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authordependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>2020-03-18 09:17:39 +0000
committerValentin Rothberg <rothberg@redhat.com>2020-03-25 14:20:34 +0100
commite8e590ed88b26e0ffc554862a284b23fc8c9bdf3 (patch)
tree5ca8d35e46da42d4c958841303ffc79c8cb4e3be /vendor/golang.org/x/sys/cpu/cpu_arm64.go
parent69b011d3ac39b985cdbd2bacfa1eaeba166bf224 (diff)
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Bump github.com/rootless-containers/rootlesskit from 0.8.0 to 0.9.2
Bumps [github.com/rootless-containers/rootlesskit](https://github.com/rootless-containers/rootlesskit) from 0.8.0 to 0.9.2. - [Release notes](https://github.com/rootless-containers/rootlesskit/releases) - [Commits](https://github.com/rootless-containers/rootlesskit/compare/v0.8.0...v0.9.2) Signed-off-by: dependabot-preview[bot] <support@dependabot.com> Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Diffstat (limited to 'vendor/golang.org/x/sys/cpu/cpu_arm64.go')
-rw-r--r--vendor/golang.org/x/sys/cpu/cpu_arm64.go138
1 files changed, 138 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/cpu/cpu_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_arm64.go
new file mode 100644
index 000000000..9c87677ae
--- /dev/null
+++ b/vendor/golang.org/x/sys/cpu/cpu_arm64.go
@@ -0,0 +1,138 @@
+// Copyright 2019 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 cpu
+
+import "runtime"
+
+const cacheLineSize = 64
+
+func init() {
+ switch runtime.GOOS {
+ case "android", "darwin":
+ // Android and iOS don't seem to allow reading these registers.
+ // Fake the minimal features expected by
+ // TestARM64minimalFeatures.
+ ARM64.HasASIMD = true
+ ARM64.HasFP = true
+ case "linux":
+ doinit()
+ default:
+ readARM64Registers()
+ }
+}
+
+func readARM64Registers() {
+ Initialized = true
+
+ // ID_AA64ISAR0_EL1
+ isar0 := getisar0()
+
+ switch extractBits(isar0, 4, 7) {
+ case 1:
+ ARM64.HasAES = true
+ case 2:
+ ARM64.HasAES = true
+ ARM64.HasPMULL = true
+ }
+
+ switch extractBits(isar0, 8, 11) {
+ case 1:
+ ARM64.HasSHA1 = true
+ }
+
+ switch extractBits(isar0, 12, 15) {
+ case 1:
+ ARM64.HasSHA2 = true
+ case 2:
+ ARM64.HasSHA2 = true
+ ARM64.HasSHA512 = true
+ }
+
+ switch extractBits(isar0, 16, 19) {
+ case 1:
+ ARM64.HasCRC32 = true
+ }
+
+ switch extractBits(isar0, 20, 23) {
+ case 2:
+ ARM64.HasATOMICS = true
+ }
+
+ switch extractBits(isar0, 28, 31) {
+ case 1:
+ ARM64.HasASIMDRDM = true
+ }
+
+ switch extractBits(isar0, 32, 35) {
+ case 1:
+ ARM64.HasSHA3 = true
+ }
+
+ switch extractBits(isar0, 36, 39) {
+ case 1:
+ ARM64.HasSM3 = true
+ }
+
+ switch extractBits(isar0, 40, 43) {
+ case 1:
+ ARM64.HasSM4 = true
+ }
+
+ switch extractBits(isar0, 44, 47) {
+ case 1:
+ ARM64.HasASIMDDP = true
+ }
+
+ // ID_AA64ISAR1_EL1
+ isar1 := getisar1()
+
+ switch extractBits(isar1, 0, 3) {
+ case 1:
+ ARM64.HasDCPOP = true
+ }
+
+ switch extractBits(isar1, 12, 15) {
+ case 1:
+ ARM64.HasJSCVT = true
+ }
+
+ switch extractBits(isar1, 16, 19) {
+ case 1:
+ ARM64.HasFCMA = true
+ }
+
+ switch extractBits(isar1, 20, 23) {
+ case 1:
+ ARM64.HasLRCPC = true
+ }
+
+ // ID_AA64PFR0_EL1
+ pfr0 := getpfr0()
+
+ switch extractBits(pfr0, 16, 19) {
+ case 0:
+ ARM64.HasFP = true
+ case 1:
+ ARM64.HasFP = true
+ ARM64.HasFPHP = true
+ }
+
+ switch extractBits(pfr0, 20, 23) {
+ case 0:
+ ARM64.HasASIMD = true
+ case 1:
+ ARM64.HasASIMD = true
+ ARM64.HasASIMDHP = true
+ }
+
+ switch extractBits(pfr0, 32, 35) {
+ case 1:
+ ARM64.HasSVE = true
+ }
+}
+
+func extractBits(data uint64, start, end uint) uint {
+ return (uint)(data>>start) & ((1 << (end - start + 1)) - 1)
+}