.gitignore added

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / sys@v0.0.0-20210124154548-22da62e12c0c / cpu / cpu_s390x_test.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/sys@v0.0.0-20210124154548-22da62e12c0c/cpu/cpu_s390x_test.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/sys@v0.0.0-20210124154548-22da62e12c0c/cpu/cpu_s390x_test.go
new file mode 100644 (file)
index 0000000..9bee163
--- /dev/null
+++ b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/sys@v0.0.0-20210124154548-22da62e12c0c/cpu/cpu_s390x_test.go
@@ -0,0 +1,75 @@
+// 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.
+
+package cpu_test
+
+import (
+       "runtime"
+       "testing"
+       "unsafe"
+
+       "golang.org/x/sys/cpu"
+)
+
+var s390xTests = []struct {
+       name      string
+       feature   bool
+       facility  uint
+       mandatory bool
+}{
+       {"ZARCH", cpu.S390X.HasZARCH, 1, true},
+       {"STFLE", cpu.S390X.HasSTFLE, 7, true},
+       {"LDISP", cpu.S390X.HasLDISP, 18, true},
+       {"EIMM", cpu.S390X.HasEIMM, 21, true},
+       {"DFP", cpu.S390X.HasDFP, 42, false},
+       {"MSA", cpu.S390X.HasMSA, 17, false},
+       {"VX", cpu.S390X.HasVX, 129, false},
+       {"VXE", cpu.S390X.HasVXE, 135, false},
+}
+
+// bitIsSet reports whether the bit at index is set. The bit index
+// is in big endian order, so bit index 0 is the leftmost bit.
+func bitIsSet(bits [4]uint64, i uint) bool {
+       return bits[i/64]&((1<<63)>>(i%64)) != 0
+}
+
+// facilityList contains the contents of location 200 on zos.
+// Bits are numbered in big endian order so the
+// leftmost bit (the MSB) is at index 0.
+type facilityList struct {
+       bits [4]uint64
+}
+
+func TestS390XVectorFacilityFeatures(t *testing.T) {
+       // vector-enhancements require vector facility to be enabled
+       if cpu.S390X.HasVXE && !cpu.S390X.HasVX {
+               t.Error("HasVX expected true, got false (VXE is true)")
+       }
+}
+
+func TestS390XMandatoryFeatures(t *testing.T) {
+       for _, tc := range s390xTests {
+               if tc.mandatory && !tc.feature {
+                       t.Errorf("Feature %s is mandatory but is not present", tc.name)
+               }
+       }
+}
+
+func TestS390XFeatures(t *testing.T) {
+       if runtime.GOOS != "zos" {
+               return
+       }
+       // Read available facilities from address 200.
+       facilitiesAddress := uintptr(200)
+       var facilities facilityList
+       for i := 0; i < 4; i++ {
+               facilities.bits[i] = *(*uint64)(unsafe.Pointer(facilitiesAddress + uintptr(8*i)))
+       }
+
+       for _, tc := range s390xTests {
+               if want := bitIsSet(facilities.bits, tc.facility); want != tc.feature {
+                       t.Errorf("Feature %s expected %v, got %v", tc.name, want, tc.feature)
+               }
+       }
+}