diff options
Diffstat (limited to 'vendor/golang.org/x/sys/cpu')
19 files changed, 410 insertions, 61 deletions
diff --git a/vendor/golang.org/x/sys/cpu/byteorder.go b/vendor/golang.org/x/sys/cpu/byteorder.go index da6b9e43..ed8da8de 100644 --- a/vendor/golang.org/x/sys/cpu/byteorder.go +++ b/vendor/golang.org/x/sys/cpu/byteorder.go @@ -5,26 +5,56 @@ package cpu import ( - "encoding/binary" "runtime" ) +// byteOrder is a subset of encoding/binary.ByteOrder. +type byteOrder interface { + Uint32([]byte) uint32 + Uint64([]byte) uint64 +} + +type littleEndian struct{} +type bigEndian struct{} + +func (littleEndian) Uint32(b []byte) uint32 { + _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808 + return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 +} + +func (littleEndian) Uint64(b []byte) uint64 { + _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808 + return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | + uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56 +} + +func (bigEndian) Uint32(b []byte) uint32 { + _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808 + return uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24 +} + +func (bigEndian) Uint64(b []byte) uint64 { + _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808 + return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 | + uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56 +} + // hostByteOrder returns binary.LittleEndian on little-endian machines and // binary.BigEndian on big-endian machines. -func hostByteOrder() binary.ByteOrder { +func hostByteOrder() byteOrder { switch runtime.GOARCH { case "386", "amd64", "amd64p32", "arm", "arm64", "mipsle", "mips64le", "mips64p32le", "ppc64le", "riscv", "riscv64": - return binary.LittleEndian + return littleEndian{} case "armbe", "arm64be", "mips", "mips64", "mips64p32", "ppc", "ppc64", "s390", "s390x", "sparc", "sparc64": - return binary.BigEndian + return bigEndian{} } panic("unknown architecture") } diff --git a/vendor/golang.org/x/sys/cpu/cpu.go b/vendor/golang.org/x/sys/cpu/cpu.go index 679e78c2..b4e6ecb2 100644 --- a/vendor/golang.org/x/sys/cpu/cpu.go +++ b/vendor/golang.org/x/sys/cpu/cpu.go @@ -78,6 +78,42 @@ var ARM64 struct { _ CacheLinePad } +// ARM contains the supported CPU features of the current ARM (32-bit) platform. +// All feature flags are false if: +// 1. the current platform is not arm, or +// 2. the current operating system is not Linux. +var ARM struct { + _ CacheLinePad + HasSWP bool // SWP instruction support + HasHALF bool // Half-word load and store support + HasTHUMB bool // ARM Thumb instruction set + Has26BIT bool // Address space limited to 26-bits + HasFASTMUL bool // 32-bit operand, 64-bit result multiplication support + HasFPA bool // Floating point arithmetic support + HasVFP bool // Vector floating point support + HasEDSP bool // DSP Extensions support + HasJAVA bool // Java instruction set + HasIWMMXT bool // Intel Wireless MMX technology support + HasCRUNCH bool // MaverickCrunch context switching and handling + HasTHUMBEE bool // Thumb EE instruction set + HasNEON bool // NEON instruction set + HasVFPv3 bool // Vector floating point version 3 support + HasVFPv3D16 bool // Vector floating point version 3 D8-D15 + HasTLS bool // Thread local storage support + HasVFPv4 bool // Vector floating point version 4 support + HasIDIVA bool // Integer divide instruction support in ARM mode + HasIDIVT bool // Integer divide instruction support in Thumb mode + HasVFPD32 bool // Vector floating point version 3 D15-D31 + HasLPAE bool // Large Physical Address Extensions + HasEVTSTRM bool // Event stream support + HasAES bool // AES hardware implementation + HasPMULL bool // Polynomial multiplication instruction set + HasSHA1 bool // SHA1 hardware implementation + HasSHA2 bool // SHA2 hardware implementation + HasCRC32 bool // CRC32 hardware implementation + _ CacheLinePad +} + // PPC64 contains the supported CPU features of the current ppc64/ppc64le platforms. // If the current platform is not ppc64/ppc64le then all feature flags are false. // diff --git a/vendor/golang.org/x/sys/cpu/cpu_arm.go b/vendor/golang.org/x/sys/cpu/cpu_arm.go index 7f2348b7..981af681 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_arm.go +++ b/vendor/golang.org/x/sys/cpu/cpu_arm.go @@ -6,4 +6,35 @@ package cpu const cacheLineSize = 32 -func doinit() {} +// HWCAP/HWCAP2 bits. +// These are specific to Linux. +const ( + hwcap_SWP = 1 << 0 + hwcap_HALF = 1 << 1 + hwcap_THUMB = 1 << 2 + hwcap_26BIT = 1 << 3 + hwcap_FAST_MULT = 1 << 4 + hwcap_FPA = 1 << 5 + hwcap_VFP = 1 << 6 + hwcap_EDSP = 1 << 7 + hwcap_JAVA = 1 << 8 + hwcap_IWMMXT = 1 << 9 + hwcap_CRUNCH = 1 << 10 + hwcap_THUMBEE = 1 << 11 + hwcap_NEON = 1 << 12 + hwcap_VFPv3 = 1 << 13 + hwcap_VFPv3D16 = 1 << 14 + hwcap_TLS = 1 << 15 + hwcap_VFPv4 = 1 << 16 + hwcap_IDIVA = 1 << 17 + hwcap_IDIVT = 1 << 18 + hwcap_VFPD32 = 1 << 19 + hwcap_LPAE = 1 << 20 + hwcap_EVTSTRM = 1 << 21 + + hwcap2_AES = 1 << 0 + hwcap2_PMULL = 1 << 1 + hwcap2_SHA1 = 1 << 2 + hwcap2_SHA2 = 1 << 3 + hwcap2_CRC32 = 1 << 4 +) diff --git a/vendor/golang.org/x/sys/cpu/cpu_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_arm64.go new file mode 100644 index 00000000..6ac0b353 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_arm64.go @@ -0,0 +1,134 @@ +// 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" + +const cacheLineSize = 64 + +func init() { + switch runtime.GOOS { + case "darwin": + // iOS does not seem to allow reading these registers + case "android", "linux": + doinit() + default: + readARM64Registers() + } +} + +func readARM64Registers() { + Initialized = true + + // ID_AA64ISAR0_EL1 + isar0 := getisar0() + + 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 + isar1 := getisar1() + + 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 + } + + // ID_AA64PFR0_EL1 + pfr0 := getpfr0() + + 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 + } +} + +func extractBits(data uint64, start, end uint) uint { + return (uint)(data>>start) & ((1 << (end - start + 1)) - 1) +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_arm64.s b/vendor/golang.org/x/sys/cpu/cpu_arm64.s new file mode 100644 index 00000000..a54436e3 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_arm64.s @@ -0,0 +1,31 @@ +// 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. + +// +build !gccgo + +#include "textflag.h" + +// func getisar0() uint64 +TEXT ·getisar0(SB),NOSPLIT,$0-8 + // get Instruction Set Attributes 0 into x0 + // mrs x0, ID_AA64ISAR0_EL1 = d5380600 + WORD $0xd5380600 + MOVD R0, ret+0(FP) + RET + +// func getisar1() uint64 +TEXT ·getisar1(SB),NOSPLIT,$0-8 + // get Instruction Set Attributes 1 into x0 + // mrs x0, ID_AA64ISAR1_EL1 = d5380620 + WORD $0xd5380620 + MOVD R0, ret+0(FP) + RET + +// func getpfr0() uint64 +TEXT ·getpfr0(SB),NOSPLIT,$0-8 + // get Processor Feature Register 0 into x0 + // mrs x0, ID_AA64PFR0_EL1 = d5380400 + WORD $0xd5380400 + MOVD R0, ret+0(FP) + RET diff --git a/vendor/golang.org/x/sys/cpu/cpu_gc_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_gc_arm64.go new file mode 100644 index 00000000..7b88e865 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_gc_arm64.go @@ -0,0 +1,11 @@ +// 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. + +// +build !gccgo + +package cpu + +func getisar0() uint64 +func getisar1() uint64 +func getpfr0() uint64 diff --git a/vendor/golang.org/x/sys/cpu/cpu_gccgo_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_gccgo_arm64.go new file mode 100644 index 00000000..53ca8d65 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_gccgo_arm64.go @@ -0,0 +1,11 @@ +// 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. + +// +build gccgo + +package cpu + +func getisar0() uint64 { return 0 } +func getisar1() uint64 { return 0 } +func getpfr0() uint64 { return 0 } diff --git a/vendor/golang.org/x/sys/cpu/cpu_gccgo.c b/vendor/golang.org/x/sys/cpu/cpu_gccgo_x86.c index e363c7d1..e363c7d1 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_gccgo.c +++ b/vendor/golang.org/x/sys/cpu/cpu_gccgo_x86.c diff --git a/vendor/golang.org/x/sys/cpu/cpu_gccgo.go b/vendor/golang.org/x/sys/cpu/cpu_gccgo_x86.go index ba49b91b..ba49b91b 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_gccgo.go +++ b/vendor/golang.org/x/sys/cpu/cpu_gccgo_x86.go diff --git a/vendor/golang.org/x/sys/cpu/cpu_linux.go b/vendor/golang.org/x/sys/cpu/cpu_linux.go index 76b5f507..fe139182 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_linux.go +++ b/vendor/golang.org/x/sys/cpu/cpu_linux.go @@ -2,58 +2,14 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -//+build !amd64,!amd64p32,!386 +// +build !386,!amd64,!amd64p32,!arm64 package cpu -import ( - "io/ioutil" -) - -const ( - _AT_HWCAP = 16 - _AT_HWCAP2 = 26 - - procAuxv = "/proc/self/auxv" - - uintSize = int(32 << (^uint(0) >> 63)) -) - -// For those platforms don't have a 'cpuid' equivalent we use HWCAP/HWCAP2 -// These are initialized in cpu_$GOARCH.go -// and should not be changed after they are initialized. -var hwCap uint -var hwCap2 uint - func init() { - buf, err := ioutil.ReadFile(procAuxv) - if err != nil { - // e.g. on android /proc/self/auxv is not accessible, so silently - // ignore the error and leave Initialized = false + if err := readHWCAP(); err != nil { return } - - bo := hostByteOrder() - for len(buf) >= 2*(uintSize/8) { - var tag, val uint - switch uintSize { - case 32: - tag = uint(bo.Uint32(buf[0:])) - val = uint(bo.Uint32(buf[4:])) - buf = buf[8:] - case 64: - tag = uint(bo.Uint64(buf[0:])) - val = uint(bo.Uint64(buf[8:])) - buf = buf[16:] - } - switch tag { - case _AT_HWCAP: - hwCap = val - case _AT_HWCAP2: - hwCap2 = val - } - } doinit() - Initialized = true } diff --git a/vendor/golang.org/x/sys/cpu/cpu_linux_arm.go b/vendor/golang.org/x/sys/cpu/cpu_linux_arm.go new file mode 100644 index 00000000..2057006d --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_linux_arm.go @@ -0,0 +1,39 @@ +// 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 + +func doinit() { + ARM.HasSWP = isSet(hwCap, hwcap_SWP) + ARM.HasHALF = isSet(hwCap, hwcap_HALF) + ARM.HasTHUMB = isSet(hwCap, hwcap_THUMB) + ARM.Has26BIT = isSet(hwCap, hwcap_26BIT) + ARM.HasFASTMUL = isSet(hwCap, hwcap_FAST_MULT) + ARM.HasFPA = isSet(hwCap, hwcap_FPA) + ARM.HasVFP = isSet(hwCap, hwcap_VFP) + ARM.HasEDSP = isSet(hwCap, hwcap_EDSP) + ARM.HasJAVA = isSet(hwCap, hwcap_JAVA) + ARM.HasIWMMXT = isSet(hwCap, hwcap_IWMMXT) + ARM.HasCRUNCH = isSet(hwCap, hwcap_CRUNCH) + ARM.HasTHUMBEE = isSet(hwCap, hwcap_THUMBEE) + ARM.HasNEON = isSet(hwCap, hwcap_NEON) + ARM.HasVFPv3 = isSet(hwCap, hwcap_VFPv3) + ARM.HasVFPv3D16 = isSet(hwCap, hwcap_VFPv3D16) + ARM.HasTLS = isSet(hwCap, hwcap_TLS) + ARM.HasVFPv4 = isSet(hwCap, hwcap_VFPv4) + ARM.HasIDIVA = isSet(hwCap, hwcap_IDIVA) + ARM.HasIDIVT = isSet(hwCap, hwcap_IDIVT) + ARM.HasVFPD32 = isSet(hwCap, hwcap_VFPD32) + ARM.HasLPAE = isSet(hwCap, hwcap_LPAE) + ARM.HasEVTSTRM = isSet(hwCap, hwcap_EVTSTRM) + ARM.HasAES = isSet(hwCap2, hwcap2_AES) + ARM.HasPMULL = isSet(hwCap2, hwcap2_PMULL) + ARM.HasSHA1 = isSet(hwCap2, hwcap2_SHA1) + ARM.HasSHA2 = isSet(hwCap2, hwcap2_SHA2) + ARM.HasCRC32 = isSet(hwCap2, hwcap2_CRC32) +} + +func isSet(hwc uint, value uint) bool { + return hwc&value != 0 +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go index fa7fb1bd..79a38a0b 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go +++ b/vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go @@ -4,8 +4,6 @@ package cpu -const cacheLineSize = 64 - // HWCAP/HWCAP2 bits. These are exposed by Linux. const ( hwcap_FP = 1 << 0 @@ -35,6 +33,12 @@ const ( ) func doinit() { + if err := readHWCAP(); err != nil { + // failed to read /proc/self/auxv, try reading registers directly + readARM64Registers() + return + } + // HWCAP feature bits ARM64.HasFP = isSet(hwCap, hwcap_FP) ARM64.HasASIMD = isSet(hwCap, hwcap_ASIMD) diff --git a/vendor/golang.org/x/sys/cpu/cpu_linux_noinit.go b/vendor/golang.org/x/sys/cpu/cpu_linux_noinit.go new file mode 100644 index 00000000..f65134f6 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_linux_noinit.go @@ -0,0 +1,9 @@ +// 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. + +// +build linux,!arm,!arm64,!ppc64,!ppc64le,!s390x + +package cpu + +func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_mips64x.go b/vendor/golang.org/x/sys/cpu/cpu_mips64x.go index f55e0c82..6165f121 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_mips64x.go +++ b/vendor/golang.org/x/sys/cpu/cpu_mips64x.go @@ -7,5 +7,3 @@ package cpu const cacheLineSize = 32 - -func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_mipsx.go b/vendor/golang.org/x/sys/cpu/cpu_mipsx.go index cda87b1a..1269eee8 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_mipsx.go +++ b/vendor/golang.org/x/sys/cpu/cpu_mipsx.go @@ -7,5 +7,3 @@ package cpu const cacheLineSize = 32 - -func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_other_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_other_arm64.go index dd1e76dc..3ffc4afa 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_other_arm64.go +++ b/vendor/golang.org/x/sys/cpu/cpu_other_arm64.go @@ -6,6 +6,4 @@ package cpu -const cacheLineSize = 64 - func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_riscv64.go b/vendor/golang.org/x/sys/cpu/cpu_riscv64.go new file mode 100644 index 00000000..efe2b7a8 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_riscv64.go @@ -0,0 +1,9 @@ +// 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. + +// +build riscv64 + +package cpu + +const cacheLineSize = 32 diff --git a/vendor/golang.org/x/sys/cpu/cpu_wasm.go b/vendor/golang.org/x/sys/cpu/cpu_wasm.go index bd9bbda0..8681e876 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_wasm.go +++ b/vendor/golang.org/x/sys/cpu/cpu_wasm.go @@ -11,5 +11,3 @@ package cpu // rules are good enough. const cacheLineSize = 0 - -func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/hwcap_linux.go b/vendor/golang.org/x/sys/cpu/hwcap_linux.go new file mode 100644 index 00000000..f3baa379 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/hwcap_linux.go @@ -0,0 +1,56 @@ +// 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 ( + "io/ioutil" +) + +const ( + _AT_HWCAP = 16 + _AT_HWCAP2 = 26 + + procAuxv = "/proc/self/auxv" + + uintSize = int(32 << (^uint(0) >> 63)) +) + +// For those platforms don't have a 'cpuid' equivalent we use HWCAP/HWCAP2 +// These are initialized in cpu_$GOARCH.go +// and should not be changed after they are initialized. +var hwCap uint +var hwCap2 uint + +func readHWCAP() error { + buf, err := ioutil.ReadFile(procAuxv) + if err != nil { + // e.g. on android /proc/self/auxv is not accessible, so silently + // ignore the error and leave Initialized = false. On some + // architectures (e.g. arm64) doinit() implements a fallback + // readout and will set Initialized = true again. + return err + } + bo := hostByteOrder() + for len(buf) >= 2*(uintSize/8) { + var tag, val uint + switch uintSize { + case 32: + tag = uint(bo.Uint32(buf[0:])) + val = uint(bo.Uint32(buf[4:])) + buf = buf[8:] + case 64: + tag = uint(bo.Uint64(buf[0:])) + val = uint(bo.Uint64(buf[8:])) + buf = buf[16:] + } + switch tag { + case _AT_HWCAP: + hwCap = val + case _AT_HWCAP2: + hwCap2 = val + } + } + return nil +} |