diff options
Diffstat (limited to 'vendor/golang.org/x/sys/cpu/cpu_arm64.go')
-rw-r--r-- | vendor/golang.org/x/sys/cpu/cpu_arm64.go | 64 |
1 files changed, 49 insertions, 15 deletions
diff --git a/vendor/golang.org/x/sys/cpu/cpu_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_arm64.go index 9c87677..87dd5e3 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_arm64.go +++ b/vendor/golang.org/x/sys/cpu/cpu_arm64.go @@ -8,27 +8,65 @@ import "runtime" const cacheLineSize = 64 -func init() { +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: "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}, + } +} + +func archInit() { 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": + case "freebsd": + readARM64Registers() + case "linux", "netbsd": doinit() default: - readARM64Registers() + // Most platforms don't seem to allow reading these registers. + // + // OpenBSD: + // See https://golang.org/issue/31746 + setMinimalFeatures() } } +// setMinimalFeatures fakes the minimal ARM64 features expected by +// TestARM64minimalFeatures. +func setMinimalFeatures() { + ARM64.HasASIMD = true + ARM64.HasFP = true +} + func readARM64Registers() { Initialized = true - // ID_AA64ISAR0_EL1 - isar0 := getisar0() + parseARM64SystemRegisters(getisar0(), getisar1(), getpfr0()) +} +func parseARM64SystemRegisters(isar0, isar1, pfr0 uint64) { + // ID_AA64ISAR0_EL1 switch extractBits(isar0, 4, 7) { case 1: ARM64.HasAES = true @@ -86,8 +124,6 @@ func readARM64Registers() { } // ID_AA64ISAR1_EL1 - isar1 := getisar1() - switch extractBits(isar1, 0, 3) { case 1: ARM64.HasDCPOP = true @@ -109,8 +145,6 @@ func readARM64Registers() { } // ID_AA64PFR0_EL1 - pfr0 := getpfr0() - switch extractBits(pfr0, 16, 19) { case 0: ARM64.HasFP = true |