12
vendor/golang.org/x/sys/cpu/cpu_arm64.go
generated
vendored
12
vendor/golang.org/x/sys/cpu/cpu_arm64.go
generated
vendored
@@ -6,7 +6,10 @@ package cpu
|
||||
|
||||
import "runtime"
|
||||
|
||||
const cacheLineSize = 64
|
||||
// cacheLineSize is used to prevent false sharing of cache lines.
|
||||
// We choose 128 because Apple Silicon, a.k.a. M1, has 128-byte cache line size.
|
||||
// It doesn't cost much and is much more future-proof.
|
||||
const cacheLineSize = 128
|
||||
|
||||
func initOptions() {
|
||||
options = []option{
|
||||
@@ -41,13 +44,10 @@ func archInit() {
|
||||
switch runtime.GOOS {
|
||||
case "freebsd":
|
||||
readARM64Registers()
|
||||
case "linux", "netbsd":
|
||||
case "linux", "netbsd", "openbsd":
|
||||
doinit()
|
||||
default:
|
||||
// Most platforms don't seem to allow reading these registers.
|
||||
//
|
||||
// OpenBSD:
|
||||
// See https://golang.org/issue/31746
|
||||
// Many platforms don't seem to allow reading these registers.
|
||||
setMinimalFeatures()
|
||||
}
|
||||
}
|
||||
|
||||
1
vendor/golang.org/x/sys/cpu/cpu_gccgo_x86.c
generated
vendored
1
vendor/golang.org/x/sys/cpu/cpu_gccgo_x86.c
generated
vendored
@@ -2,6 +2,7 @@
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build (386 || amd64 || amd64p32) && gccgo
|
||||
// +build 386 amd64 amd64p32
|
||||
// +build gccgo
|
||||
|
||||
|
||||
44
vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go
generated
vendored
44
vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go
generated
vendored
@@ -4,6 +4,11 @@
|
||||
|
||||
package cpu
|
||||
|
||||
import (
|
||||
"strings"
|
||||
"syscall"
|
||||
)
|
||||
|
||||
// HWCAP/HWCAP2 bits. These are exposed by Linux.
|
||||
const (
|
||||
hwcap_FP = 1 << 0
|
||||
@@ -32,10 +37,45 @@ const (
|
||||
hwcap_ASIMDFHM = 1 << 23
|
||||
)
|
||||
|
||||
// linuxKernelCanEmulateCPUID reports whether we're running
|
||||
// on Linux 4.11+. Ideally we'd like to ask the question about
|
||||
// whether the current kernel contains
|
||||
// https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=77c97b4ee21290f5f083173d957843b615abbff2
|
||||
// but the version number will have to do.
|
||||
func linuxKernelCanEmulateCPUID() bool {
|
||||
var un syscall.Utsname
|
||||
syscall.Uname(&un)
|
||||
var sb strings.Builder
|
||||
for _, b := range un.Release[:] {
|
||||
if b == 0 {
|
||||
break
|
||||
}
|
||||
sb.WriteByte(byte(b))
|
||||
}
|
||||
major, minor, _, ok := parseRelease(sb.String())
|
||||
return ok && (major > 4 || major == 4 && minor >= 11)
|
||||
}
|
||||
|
||||
func doinit() {
|
||||
if err := readHWCAP(); err != nil {
|
||||
// failed to read /proc/self/auxv, try reading registers directly
|
||||
readARM64Registers()
|
||||
// We failed to read /proc/self/auxv. This can happen if the binary has
|
||||
// been given extra capabilities(7) with /bin/setcap.
|
||||
//
|
||||
// When this happens, we have two options. If the Linux kernel is new
|
||||
// enough (4.11+), we can read the arm64 registers directly which'll
|
||||
// trap into the kernel and then return back to userspace.
|
||||
//
|
||||
// But on older kernels, such as Linux 4.4.180 as used on many Synology
|
||||
// devices, calling readARM64Registers (specifically getisar0) will
|
||||
// cause a SIGILL and we'll die. So for older kernels, parse /proc/cpuinfo
|
||||
// instead.
|
||||
//
|
||||
// See golang/go#57336.
|
||||
if linuxKernelCanEmulateCPUID() {
|
||||
readARM64Registers()
|
||||
} else {
|
||||
readLinuxProcCPUInfo()
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
|
||||
65
vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.go
generated
vendored
Normal file
65
vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.go
generated
vendored
Normal file
@@ -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
|
||||
}
|
||||
11
vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.s
generated
vendored
Normal file
11
vendor/golang.org/x/sys/cpu/cpu_openbsd_arm64.s
generated
vendored
Normal file
@@ -0,0 +1,11 @@
|
||||
// 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.
|
||||
|
||||
#include "textflag.h"
|
||||
|
||||
TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
|
||||
JMP libc_sysctl(SB)
|
||||
|
||||
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $8
|
||||
DATA ·libc_sysctl_trampoline_addr(SB)/8, $libc_sysctl_trampoline<>(SB)
|
||||
4
vendor/golang.org/x/sys/cpu/cpu_other_arm64.go
generated
vendored
4
vendor/golang.org/x/sys/cpu/cpu_other_arm64.go
generated
vendored
@@ -2,8 +2,8 @@
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build !linux && !netbsd && arm64
|
||||
// +build !linux,!netbsd,arm64
|
||||
//go:build !linux && !netbsd && !openbsd && arm64
|
||||
// +build !linux,!netbsd,!openbsd,arm64
|
||||
|
||||
package cpu
|
||||
|
||||
|
||||
15
vendor/golang.org/x/sys/cpu/cpu_other_ppc64x.go
generated
vendored
Normal file
15
vendor/golang.org/x/sys/cpu/cpu_other_ppc64x.go
generated
vendored
Normal file
@@ -0,0 +1,15 @@
|
||||
// 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.
|
||||
|
||||
//go:build !aix && !linux && (ppc64 || ppc64le)
|
||||
// +build !aix
|
||||
// +build !linux
|
||||
// +build ppc64 ppc64le
|
||||
|
||||
package cpu
|
||||
|
||||
func archInit() {
|
||||
PPC64.IsPOWER8 = true
|
||||
Initialized = true
|
||||
}
|
||||
11
vendor/golang.org/x/sys/cpu/endian_big.go
generated
vendored
Normal file
11
vendor/golang.org/x/sys/cpu/endian_big.go
generated
vendored
Normal file
@@ -0,0 +1,11 @@
|
||||
// Copyright 2023 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 armbe || arm64be || m68k || mips || mips64 || mips64p32 || ppc || ppc64 || s390 || s390x || shbe || sparc || sparc64
|
||||
// +build armbe arm64be m68k mips mips64 mips64p32 ppc ppc64 s390 s390x shbe sparc sparc64
|
||||
|
||||
package cpu
|
||||
|
||||
// IsBigEndian records whether the GOARCH's byte order is big endian.
|
||||
const IsBigEndian = true
|
||||
11
vendor/golang.org/x/sys/cpu/endian_little.go
generated
vendored
Normal file
11
vendor/golang.org/x/sys/cpu/endian_little.go
generated
vendored
Normal file
@@ -0,0 +1,11 @@
|
||||
// Copyright 2023 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 386 || amd64 || amd64p32 || alpha || arm || arm64 || loong64 || mipsle || mips64le || mips64p32le || nios2 || ppc64le || riscv || riscv64 || sh
|
||||
// +build 386 amd64 amd64p32 alpha arm arm64 loong64 mipsle mips64le mips64p32le nios2 ppc64le riscv riscv64 sh
|
||||
|
||||
package cpu
|
||||
|
||||
// IsBigEndian records whether the GOARCH's byte order is big endian.
|
||||
const IsBigEndian = false
|
||||
43
vendor/golang.org/x/sys/cpu/parse.go
generated
vendored
Normal file
43
vendor/golang.org/x/sys/cpu/parse.go
generated
vendored
Normal file
@@ -0,0 +1,43 @@
|
||||
// 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 "strconv"
|
||||
|
||||
// parseRelease parses a dot-separated version number. It follows the semver
|
||||
// syntax, but allows the minor and patch versions to be elided.
|
||||
//
|
||||
// This is a copy of the Go runtime's parseRelease from
|
||||
// https://golang.org/cl/209597.
|
||||
func parseRelease(rel string) (major, minor, patch int, ok bool) {
|
||||
// Strip anything after a dash or plus.
|
||||
for i := 0; i < len(rel); i++ {
|
||||
if rel[i] == '-' || rel[i] == '+' {
|
||||
rel = rel[:i]
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
next := func() (int, bool) {
|
||||
for i := 0; i < len(rel); i++ {
|
||||
if rel[i] == '.' {
|
||||
ver, err := strconv.Atoi(rel[:i])
|
||||
rel = rel[i+1:]
|
||||
return ver, err == nil
|
||||
}
|
||||
}
|
||||
ver, err := strconv.Atoi(rel)
|
||||
rel = ""
|
||||
return ver, err == nil
|
||||
}
|
||||
if major, ok = next(); !ok || rel == "" {
|
||||
return
|
||||
}
|
||||
if minor, ok = next(); !ok || rel == "" {
|
||||
return
|
||||
}
|
||||
patch, ok = next()
|
||||
return
|
||||
}
|
||||
54
vendor/golang.org/x/sys/cpu/proc_cpuinfo_linux.go
generated
vendored
Normal file
54
vendor/golang.org/x/sys/cpu/proc_cpuinfo_linux.go
generated
vendored
Normal file
@@ -0,0 +1,54 @@
|
||||
// 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.
|
||||
|
||||
//go:build linux && arm64
|
||||
// +build linux,arm64
|
||||
|
||||
package cpu
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"io"
|
||||
"os"
|
||||
"strings"
|
||||
)
|
||||
|
||||
func readLinuxProcCPUInfo() error {
|
||||
f, err := os.Open("/proc/cpuinfo")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
var buf [1 << 10]byte // enough for first CPU
|
||||
n, err := io.ReadFull(f, buf[:])
|
||||
if err != nil && err != io.ErrUnexpectedEOF {
|
||||
return err
|
||||
}
|
||||
in := string(buf[:n])
|
||||
const features = "\nFeatures : "
|
||||
i := strings.Index(in, features)
|
||||
if i == -1 {
|
||||
return errors.New("no CPU features found")
|
||||
}
|
||||
in = in[i+len(features):]
|
||||
if i := strings.Index(in, "\n"); i != -1 {
|
||||
in = in[:i]
|
||||
}
|
||||
m := map[string]*bool{}
|
||||
|
||||
initOptions() // need it early here; it's harmless to call twice
|
||||
for _, o := range options {
|
||||
m[o.Name] = o.Feature
|
||||
}
|
||||
// The EVTSTRM field has alias "evstrm" in Go, but Linux calls it "evtstrm".
|
||||
m["evtstrm"] = &ARM64.HasEVTSTRM
|
||||
|
||||
for _, f := range strings.Fields(in) {
|
||||
if p, ok := m[f]; ok {
|
||||
*p = true
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
Reference in New Issue
Block a user