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authorJordan <me@jordan.im>2022-09-30 11:52:44 -0700
committerJordan <me@jordan.im>2022-09-30 11:52:44 -0700
commit0192a4e3f1c90df255e44831a579d9b0f611a543 (patch)
tree52c6bfa35b5491560af253a5e5ba90ed8a729871 /vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.go
parent66bfe530b4fd5cb9755337ce718df26ee81f1b77 (diff)
downloadkeep-0192a4e3f1c90df255e44831a579d9b0f611a543.tar.gz
keep-0192a4e3f1c90df255e44831a579d9b0f611a543.zip
go.mod: bump discordgo, go-sqlite3, x/net
Diffstat (limited to 'vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.go')
-rw-r--r--vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.go65
1 files changed, 65 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.go
new file mode 100644
index 0000000..85b64d5
--- /dev/null
+++ b/vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.go
@@ -0,0 +1,65 @@
+// Copyright 2022 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 (
+ "syscall"
+ "unsafe"
+)
+
+// Minimal copy of functionality from x/sys/unix so the cpu package can call
+// sysctl without depending on x/sys/unix.
+
+const (
+ // From OpenBSD's sys/sysctl.h.
+ _CTL_MACHDEP = 7
+
+ // From OpenBSD's machine/cpu.h.
+ _CPU_ID_AA64ISAR0 = 2
+ _CPU_ID_AA64ISAR1 = 3
+)
+
+// Implemented in the runtime package (runtime/sys_openbsd3.go)
+func syscall_syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno)
+
+//go:linkname syscall_syscall6 syscall.syscall6
+
+func sysctl(mib []uint32, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) {
+ _, _, errno := syscall_syscall6(libc_sysctl_trampoline_addr, uintptr(unsafe.Pointer(&mib[0])), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+ if errno != 0 {
+ return errno
+ }
+ return nil
+}
+
+var libc_sysctl_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_sysctl sysctl "libc.so"
+
+func sysctlUint64(mib []uint32) (uint64, bool) {
+ var out uint64
+ nout := unsafe.Sizeof(out)
+ if err := sysctl(mib, (*byte)(unsafe.Pointer(&out)), &nout, nil, 0); err != nil {
+ return 0, false
+ }
+ return out, true
+}
+
+func doinit() {
+ setMinimalFeatures()
+
+ // Get ID_AA64ISAR0 and ID_AA64ISAR1 from sysctl.
+ isar0, ok := sysctlUint64([]uint32{_CTL_MACHDEP, _CPU_ID_AA64ISAR0})
+ if !ok {
+ return
+ }
+ isar1, ok := sysctlUint64([]uint32{_CTL_MACHDEP, _CPU_ID_AA64ISAR1})
+ if !ok {
+ return
+ }
+ parseARM64SystemRegisters(isar0, isar1, 0)
+
+ Initialized = true
+}