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How to use in method of x86 Package

Best Syzkaller code snippet using x86.in

x86_64_device.go

Source:x86_64_device.go

1// Copyright 2015 Google Inc. All rights reserved.2//3// Licensed under the Apache License, Version 2.0 (the "License");4// you may not use this file except in compliance with the License.5// You may obtain a copy of the License at6//7//     http://www.apache.org/licenses/LICENSE-2.08//9// Unless required by applicable law or agreed to in writing, software10// distributed under the License is distributed on an "AS IS" BASIS,11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.12// See the License for the specific language governing permissions and13// limitations under the License.14package config15import (16	"strings"17	"android/soong/android"18)19var (20	x86_64Cflags = []string{21		// Help catch common 32/64-bit errors.22		"-Werror=implicit-function-declaration",23	}24	x86_64Cppflags = []string{}25	x86_64Ldflags = []string{26		"-Wl,--hash-style=gnu",27	}28	x86_64Lldflags = ClangFilterUnknownLldflags(x86_64Ldflags)29	x86_64ArchVariantCflags = map[string][]string{30		"": []string{31			"-march=x86-64",32		},33		"broadwell": []string{34			"-march=broadwell",35		},36		"haswell": []string{37			"-march=core-avx2",38		},39		"ivybridge": []string{40			"-march=core-avx-i",41		},42		"sandybridge": []string{43			"-march=corei7",44		},45		"silvermont": []string{46			"-march=slm",47		},48		"skylake": []string{49			"-march=skylake",50		},51		"stoneyridge": []string{52			"-march=bdver4",53		},54	}55	x86_64ArchFeatureCflags = map[string][]string{56		"ssse3":  []string{"-mssse3"},57		"sse4":   []string{"-msse4"},58		"sse4_1": []string{"-msse4.1"},59		"sse4_2": []string{"-msse4.2"},60		// Not all cases there is performance gain by enabling -mavx -mavx261		// flags so these flags are not enabled by default.62		// if there is performance gain in individual library components,63		// the compiler flags can be set in corresponding bp files.64		// "avx":    []string{"-mavx"},65		// "avx2":   []string{"-mavx2"},66		// "avx512": []string{"-mavx512"}67		"popcnt": []string{"-mpopcnt"},68		"aes_ni": []string{"-maes"},69	}70)71const (72	x86_64GccVersion = "4.9"73)74func init() {75	android.RegisterDefaultArchVariantFeatures(android.Android, android.X86_64,76		"ssse3",77		"sse4",78		"sse4_1",79		"sse4_2",80		"popcnt")81	pctx.StaticVariable("x86_64GccVersion", x86_64GccVersion)82	pctx.SourcePathVariable("X86_64GccRoot",83		"prebuilts/gcc/${HostPrebuiltTag}/x86/x86_64-linux-android-${x86_64GccVersion}")84	pctx.StaticVariable("X86_64ToolchainCflags", "-m64")85	pctx.StaticVariable("X86_64ToolchainLdflags", "-m64")86	pctx.StaticVariable("X86_64Ldflags", strings.Join(x86_64Ldflags, " "))87	pctx.StaticVariable("X86_64Lldflags", strings.Join(x86_64Lldflags, " "))88	pctx.StaticVariable("X86_64IncludeFlags", bionicHeaders("x86"))89	// Clang cflags90	pctx.StaticVariable("X86_64ClangCflags", strings.Join(ClangFilterUnknownCflags(x86_64Cflags), " "))91	pctx.StaticVariable("X86_64ClangLdflags", strings.Join(ClangFilterUnknownCflags(x86_64Ldflags), " "))92	pctx.StaticVariable("X86_64ClangLldflags", strings.Join(ClangFilterUnknownCflags(x86_64Lldflags), " "))93	pctx.StaticVariable("X86_64ClangCppflags", strings.Join(ClangFilterUnknownCflags(x86_64Cppflags), " "))94	// Yasm flags95	pctx.StaticVariable("X86_64YasmFlags", "-f elf64 -m amd64")96	// Extended cflags97	// Architecture variant cflags98	for variant, cflags := range x86_64ArchVariantCflags {99		pctx.StaticVariable("X86_64"+variant+"VariantClangCflags",100			strings.Join(ClangFilterUnknownCflags(cflags), " "))101	}102}103type toolchainX86_64 struct {104	toolchain64Bit105	toolchainClangCflags string106}107func (t *toolchainX86_64) Name() string {108	return "x86_64"109}110func (t *toolchainX86_64) GccRoot() string {111	return "${config.X86_64GccRoot}"112}113func (t *toolchainX86_64) GccTriple() string {114	return "x86_64-linux-android"115}116func (t *toolchainX86_64) GccVersion() string {117	return x86_64GccVersion118}119func (t *toolchainX86_64) IncludeFlags() string {120	return "${config.X86_64IncludeFlags}"121}122func (t *toolchainX86_64) ClangTriple() string {123	return t.GccTriple()124}125func (t *toolchainX86_64) ToolchainClangLdflags() string {126	return "${config.X86_64ToolchainLdflags}"127}128func (t *toolchainX86_64) ToolchainClangCflags() string {129	return t.toolchainClangCflags130}131func (t *toolchainX86_64) ClangCflags() string {132	return "${config.X86_64ClangCflags}"133}134func (t *toolchainX86_64) ClangCppflags() string {135	return "${config.X86_64ClangCppflags}"136}137func (t *toolchainX86_64) ClangLdflags() string {138	return "${config.X86_64Ldflags}"139}140func (t *toolchainX86_64) ClangLldflags() string {141	return "${config.X86_64Lldflags}"142}143func (t *toolchainX86_64) YasmFlags() string {144	return "${config.X86_64YasmFlags}"145}146func (toolchainX86_64) LibclangRuntimeLibraryArch() string {147	return "x86_64"148}149func x86_64ToolchainFactory(arch android.Arch) Toolchain {150	toolchainClangCflags := []string{151		"${config.X86_64ToolchainCflags}",152		"${config.X86_64" + arch.ArchVariant + "VariantClangCflags}",153	}154	for _, feature := range arch.ArchFeatures {155		toolchainClangCflags = append(toolchainClangCflags, x86_64ArchFeatureCflags[feature]...)156	}157	return &toolchainX86_64{158		toolchainClangCflags: strings.Join(toolchainClangCflags, " "),159	}160}161func init() {162	registerToolchainFactory(android.Android, android.X86_64, x86_64ToolchainFactory)163}...

cpu_x86.go

Source:cpu_x86.go

1// Copyright 2017 The Go Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4// +build 386 amd64 amd64p325package cpu6const CacheLineSize = 647// cpuid is implemented in cpu_x86.s.8func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)9// xgetbv with ecx = 0 is implemented in cpu_x86.s.10func xgetbv() (eax, edx uint32)11func init() {12	maxID, _, _, _ := cpuid(0, 0)13	if maxID < 1 {14		return15	}16	_, _, ecx1, edx1 := cpuid(1, 0)17	X86.HasSSE2 = isSet(26, edx1)18	X86.HasSSE3 = isSet(0, ecx1)19	X86.HasPCLMULQDQ = isSet(1, ecx1)20	X86.HasSSSE3 = isSet(9, ecx1)21	X86.HasFMA = isSet(12, ecx1)22	X86.HasSSE41 = isSet(19, ecx1)23	X86.HasSSE42 = isSet(20, ecx1)24	X86.HasPOPCNT = isSet(23, ecx1)25	X86.HasAES = isSet(25, ecx1)26	X86.HasOSXSAVE = isSet(27, ecx1)27	osSupportsAVX := false28	// For XGETBV, OSXSAVE bit is required and sufficient.29	if X86.HasOSXSAVE {30		eax, _ := xgetbv()31		// Check if XMM and YMM registers have OS support.32		osSupportsAVX = isSet(1, eax) && isSet(2, eax)33	}34	X86.HasAVX = isSet(28, ecx1) && osSupportsAVX35	if maxID < 7 {36		return37	}38	_, ebx7, _, _ := cpuid(7, 0)39	X86.HasBMI1 = isSet(3, ebx7)40	X86.HasAVX2 = isSet(5, ebx7) && osSupportsAVX41	X86.HasBMI2 = isSet(8, ebx7)42	X86.HasERMS = isSet(9, ebx7)43	X86.HasADX = isSet(19, ebx7)44}45func isSet(bitpos uint, value uint32) bool {46	return value&(1<<bitpos) != 047}...

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