mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 18:12:46 +00:00
745b80259f
Bumps [golang.org/x/net](https://github.com/golang/net) from 0.27.0 to 0.28.0. - [Commits](https://github.com/golang/net/compare/v0.27.0...v0.28.0) --- updated-dependencies: - dependency-name: golang.org/x/net dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
195 lines
4.1 KiB
Go
195 lines
4.1 KiB
Go
// 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"
|
|
|
|
// 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{
|
|
{Name: "fp", Feature: &ARM64.HasFP},
|
|
{Name: "asimd", Feature: &ARM64.HasASIMD},
|
|
{Name: "evstrm", Feature: &ARM64.HasEVTSTRM},
|
|
{Name: "aes", Feature: &ARM64.HasAES},
|
|
{Name: "fphp", Feature: &ARM64.HasFPHP},
|
|
{Name: "jscvt", Feature: &ARM64.HasJSCVT},
|
|
{Name: "lrcpc", Feature: &ARM64.HasLRCPC},
|
|
{Name: "pmull", Feature: &ARM64.HasPMULL},
|
|
{Name: "sha1", Feature: &ARM64.HasSHA1},
|
|
{Name: "sha2", Feature: &ARM64.HasSHA2},
|
|
{Name: "sha3", Feature: &ARM64.HasSHA3},
|
|
{Name: "sha512", Feature: &ARM64.HasSHA512},
|
|
{Name: "sm3", Feature: &ARM64.HasSM3},
|
|
{Name: "sm4", Feature: &ARM64.HasSM4},
|
|
{Name: "sve", Feature: &ARM64.HasSVE},
|
|
{Name: "sve2", Feature: &ARM64.HasSVE2},
|
|
{Name: "crc32", Feature: &ARM64.HasCRC32},
|
|
{Name: "atomics", Feature: &ARM64.HasATOMICS},
|
|
{Name: "asimdhp", Feature: &ARM64.HasASIMDHP},
|
|
{Name: "cpuid", Feature: &ARM64.HasCPUID},
|
|
{Name: "asimrdm", Feature: &ARM64.HasASIMDRDM},
|
|
{Name: "fcma", Feature: &ARM64.HasFCMA},
|
|
{Name: "dcpop", Feature: &ARM64.HasDCPOP},
|
|
{Name: "asimddp", Feature: &ARM64.HasASIMDDP},
|
|
{Name: "asimdfhm", Feature: &ARM64.HasASIMDFHM},
|
|
{Name: "dit", Feature: &ARM64.HasDIT},
|
|
{Name: "i8mm", Feature: &ARM64.HasI8MM},
|
|
}
|
|
}
|
|
|
|
func archInit() {
|
|
switch runtime.GOOS {
|
|
case "freebsd":
|
|
readARM64Registers()
|
|
case "linux", "netbsd", "openbsd":
|
|
doinit()
|
|
default:
|
|
// Many platforms don't seem to allow reading these registers.
|
|
setMinimalFeatures()
|
|
}
|
|
}
|
|
|
|
// setMinimalFeatures fakes the minimal ARM64 features expected by
|
|
// TestARM64minimalFeatures.
|
|
func setMinimalFeatures() {
|
|
ARM64.HasASIMD = true
|
|
ARM64.HasFP = true
|
|
}
|
|
|
|
func readARM64Registers() {
|
|
Initialized = true
|
|
|
|
parseARM64SystemRegisters(getisar0(), getisar1(), getpfr0())
|
|
}
|
|
|
|
func parseARM64SystemRegisters(isar0, isar1, pfr0 uint64) {
|
|
// ID_AA64ISAR0_EL1
|
|
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
|
|
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
|
|
}
|
|
|
|
switch extractBits(isar1, 52, 55) {
|
|
case 1:
|
|
ARM64.HasI8MM = true
|
|
}
|
|
|
|
// ID_AA64PFR0_EL1
|
|
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
|
|
|
|
parseARM64SVERegister(getzfr0())
|
|
}
|
|
|
|
switch extractBits(pfr0, 48, 51) {
|
|
case 1:
|
|
ARM64.HasDIT = true
|
|
}
|
|
}
|
|
|
|
func parseARM64SVERegister(zfr0 uint64) {
|
|
switch extractBits(zfr0, 0, 3) {
|
|
case 1:
|
|
ARM64.HasSVE2 = true
|
|
}
|
|
}
|
|
|
|
func extractBits(data uint64, start, end uint) uint {
|
|
return (uint)(data>>start) & ((1 << (end - start + 1)) - 1)
|
|
}
|