d97a6e9483
This is a new sanitizer similar to ASan, but with a few differences from the build system perspective: * Only runs on AArch64. * Supports static binaries. * Bionic itself will be built with HWASan. * Does not have any "if a library is sanitized than the binary must be, too" requirements unlike ASan. Even better, individual static libraries can be freely sanitized or not. We propagate "nosanitize" from binaries to static libraries anyway, because otherwise there is no good way to disable hwasan on a binary as a whole. Same a CFI, we export a list of sanitized static libraries to make. In fact, we export separate lists for vendor and regular libraries, because it is possible for one to be sanitized without the other (i.e. there can be mylib.hwasan.vendor w/o mylib.hwasan or vice versa). Bug: 112438058, 112709969 Test: manual, part of a bigger patch set Change-Id: Ie4fdeb522ac03cf9684526882e84dfee3807b6a7
400 lines
15 KiB
Go
400 lines
15 KiB
Go
// Copyright 2016 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cc
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import (
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"fmt"
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"sort"
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"strings"
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"sync"
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"android/soong/android"
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"android/soong/cc/config"
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)
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const (
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modulesAddedWall = "ModulesAddedWall"
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modulesUsingWnoError = "ModulesUsingWnoError"
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modulesMissingProfileFile = "ModulesMissingProfileFile"
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)
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func init() {
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android.RegisterMakeVarsProvider(pctx, makeVarsProvider)
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}
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func getNamedMapForConfig(config android.Config, name string) *sync.Map {
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return config.Once(name, func() interface{} {
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return &sync.Map{}
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}).(*sync.Map)
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}
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func makeStringOfKeys(ctx android.MakeVarsContext, setName string) string {
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set := getNamedMapForConfig(ctx.Config(), setName)
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keys := []string{}
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set.Range(func(key interface{}, value interface{}) bool {
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keys = append(keys, key.(string))
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return true
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})
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sort.Strings(keys)
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return strings.Join(keys, " ")
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}
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func makeStringOfWarningAllowedProjects() string {
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allProjects := append([]string{}, config.WarningAllowedProjects...)
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allProjects = append(allProjects, config.WarningAllowedOldProjects...)
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sort.Strings(allProjects)
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// Makefile rules use pattern "path/%" to match module paths.
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if len(allProjects) > 0 {
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return strings.Join(allProjects, "% ") + "%"
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} else {
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return ""
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}
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}
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func makeVarsProvider(ctx android.MakeVarsContext) {
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ctx.Strict("LLVM_RELEASE_VERSION", "${config.ClangShortVersion}")
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ctx.Strict("LLVM_PREBUILTS_VERSION", "${config.ClangVersion}")
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ctx.Strict("LLVM_PREBUILTS_BASE", "${config.ClangBase}")
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ctx.Strict("LLVM_PREBUILTS_PATH", "${config.ClangBin}")
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ctx.Strict("CLANG", "${config.ClangBin}/clang")
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ctx.Strict("CLANG_CXX", "${config.ClangBin}/clang++")
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ctx.Strict("LLVM_AS", "${config.ClangBin}/llvm-as")
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ctx.Strict("LLVM_LINK", "${config.ClangBin}/llvm-link")
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ctx.Strict("LLVM_OBJCOPY", "${config.ClangBin}/llvm-objcopy")
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ctx.Strict("LLVM_STRIP", "${config.ClangBin}/llvm-strip")
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ctx.Strict("PATH_TO_CLANG_TIDY", "${config.ClangBin}/clang-tidy")
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ctx.Strict("CLANG_TIDY_UNKNOWN_CFLAGS", strings.Join(config.ClangTidyUnknownCflags, " "))
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ctx.StrictSorted("CLANG_CONFIG_UNKNOWN_CFLAGS", strings.Join(config.ClangUnknownCflags, " "))
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ctx.Strict("RS_LLVM_PREBUILTS_VERSION", "${config.RSClangVersion}")
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ctx.Strict("RS_LLVM_PREBUILTS_BASE", "${config.RSClangBase}")
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ctx.Strict("RS_LLVM_PREBUILTS_PATH", "${config.RSLLVMPrebuiltsPath}")
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ctx.Strict("RS_LLVM_INCLUDES", "${config.RSIncludePath}")
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ctx.Strict("RS_CLANG", "${config.RSLLVMPrebuiltsPath}/clang")
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ctx.Strict("RS_LLVM_AS", "${config.RSLLVMPrebuiltsPath}/llvm-as")
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ctx.Strict("RS_LLVM_LINK", "${config.RSLLVMPrebuiltsPath}/llvm-link")
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ctx.Strict("CLANG_EXTERNAL_CFLAGS", "${config.ClangExternalCflags}")
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ctx.Strict("GLOBAL_CFLAGS_NO_OVERRIDE", "${config.NoOverrideGlobalCflags}")
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ctx.Strict("GLOBAL_CLANG_CFLAGS_NO_OVERRIDE", "${config.ClangExtraNoOverrideCflags}")
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ctx.Strict("GLOBAL_CPPFLAGS_NO_OVERRIDE", "")
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ctx.Strict("GLOBAL_CLANG_CPPFLAGS_NO_OVERRIDE", "")
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ctx.Strict("NDK_PREBUILT_SHARED_LIBRARIES", strings.Join(ndkPrebuiltSharedLibs, " "))
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ctx.Strict("BOARD_VNDK_VERSION", ctx.DeviceConfig().VndkVersion())
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ctx.Strict("VNDK_CORE_LIBRARIES", strings.Join(vndkCoreLibraries, " "))
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ctx.Strict("VNDK_SAMEPROCESS_LIBRARIES", strings.Join(vndkSpLibraries, " "))
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ctx.Strict("LLNDK_LIBRARIES", strings.Join(llndkLibraries, " "))
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ctx.Strict("VNDK_PRIVATE_LIBRARIES", strings.Join(vndkPrivateLibraries, " "))
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// Filter vendor_public_library that are exported to make
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exportedVendorPublicLibraries := []string{}
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ctx.SingletonContext().VisitAllModules(func(module android.Module) {
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if ccModule, ok := module.(*Module); ok {
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baseName := ccModule.BaseModuleName()
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if inList(baseName, vendorPublicLibraries) && module.ExportedToMake() {
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if !inList(baseName, exportedVendorPublicLibraries) {
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exportedVendorPublicLibraries = append(exportedVendorPublicLibraries, baseName)
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}
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}
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}
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})
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sort.Strings(exportedVendorPublicLibraries)
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ctx.Strict("VENDOR_PUBLIC_LIBRARIES", strings.Join(exportedVendorPublicLibraries, " "))
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sort.Strings(lsdumpPaths)
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ctx.Strict("LSDUMP_PATHS", strings.Join(lsdumpPaths, " "))
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ctx.Strict("ANDROID_WARNING_ALLOWED_PROJECTS", makeStringOfWarningAllowedProjects())
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ctx.Strict("SOONG_MODULES_ADDED_WALL", makeStringOfKeys(ctx, modulesAddedWall))
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ctx.Strict("SOONG_MODULES_USING_WNO_ERROR", makeStringOfKeys(ctx, modulesUsingWnoError))
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ctx.Strict("SOONG_MODULES_MISSING_PGO_PROFILE_FILE", makeStringOfKeys(ctx, modulesMissingProfileFile))
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ctx.Strict("ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS", strings.Join(asanCflags, " "))
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ctx.Strict("ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS", strings.Join(asanLdflags, " "))
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ctx.Strict("ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES", strings.Join(asanLibs, " "))
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ctx.Strict("CFI_EXTRA_CFLAGS", strings.Join(cfiCflags, " "))
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ctx.Strict("CFI_EXTRA_LDFLAGS", strings.Join(cfiLdflags, " "))
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ctx.Strict("INTEGER_OVERFLOW_EXTRA_CFLAGS", strings.Join(intOverflowCflags, " "))
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ctx.Strict("DEFAULT_C_STD_VERSION", config.CStdVersion)
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ctx.Strict("DEFAULT_CPP_STD_VERSION", config.CppStdVersion)
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ctx.Strict("DEFAULT_GCC_CPP_STD_VERSION", config.GccCppStdVersion)
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ctx.Strict("EXPERIMENTAL_C_STD_VERSION", config.ExperimentalCStdVersion)
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ctx.Strict("EXPERIMENTAL_CPP_STD_VERSION", config.ExperimentalCppStdVersion)
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ctx.Strict("DEFAULT_GLOBAL_TIDY_CHECKS", "${config.TidyDefaultGlobalChecks}")
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ctx.Strict("DEFAULT_LOCAL_TIDY_CHECKS", joinLocalTidyChecks(config.DefaultLocalTidyChecks))
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ctx.Strict("DEFAULT_TIDY_HEADER_DIRS", "${config.TidyDefaultHeaderDirs}")
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ctx.Strict("AIDL_CPP", "${aidlCmd}")
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ctx.Strict("RS_GLOBAL_INCLUDES", "${config.RsGlobalIncludes}")
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nativeHelperIncludeFlags, err := ctx.Eval("${config.CommonNativehelperInclude}")
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if err != nil {
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panic(err)
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}
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nativeHelperIncludes, nativeHelperSystemIncludes := splitSystemIncludes(ctx, nativeHelperIncludeFlags)
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if len(nativeHelperSystemIncludes) > 0 {
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panic("native helper may not have any system includes")
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}
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ctx.Strict("JNI_H_INCLUDE", strings.Join(nativeHelperIncludes, " "))
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includeFlags, err := ctx.Eval("${config.CommonGlobalIncludes}")
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if err != nil {
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panic(err)
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}
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includes, systemIncludes := splitSystemIncludes(ctx, includeFlags)
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ctx.StrictRaw("SRC_HEADERS", strings.Join(includes, " "))
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ctx.StrictRaw("SRC_SYSTEM_HEADERS", strings.Join(systemIncludes, " "))
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sort.Strings(ndkMigratedLibs)
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ctx.Strict("NDK_MIGRATED_LIBS", strings.Join(ndkMigratedLibs, " "))
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hostTargets := ctx.Config().Targets[android.Host]
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makeVarsToolchain(ctx, "", hostTargets[0])
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if len(hostTargets) > 1 {
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makeVarsToolchain(ctx, "2ND_", hostTargets[1])
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}
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crossTargets := ctx.Config().Targets[android.HostCross]
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if len(crossTargets) > 0 {
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makeVarsToolchain(ctx, "", crossTargets[0])
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if len(crossTargets) > 1 {
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makeVarsToolchain(ctx, "2ND_", crossTargets[1])
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}
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}
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deviceTargets := ctx.Config().Targets[android.Device]
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makeVarsToolchain(ctx, "", deviceTargets[0])
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if len(deviceTargets) > 1 {
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makeVarsToolchain(ctx, "2ND_", deviceTargets[1])
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}
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}
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func makeVarsToolchain(ctx android.MakeVarsContext, secondPrefix string,
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target android.Target) {
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var typePrefix string
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switch target.Os.Class {
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case android.Host:
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typePrefix = "HOST_"
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case android.HostCross:
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typePrefix = "HOST_CROSS_"
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case android.Device:
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typePrefix = "TARGET_"
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}
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makePrefix := secondPrefix + typePrefix
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toolchain := config.FindToolchain(target.Os, target.Arch)
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var productExtraCflags string
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var productExtraLdflags string
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hod := "Host"
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if target.Os.Class == android.Device {
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hod = "Device"
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}
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if target.Os.Class == android.Host && ctx.Config().HostStaticBinaries() {
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productExtraLdflags += "-static"
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}
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ctx.Strict(makePrefix+"GLOBAL_CFLAGS", strings.Join([]string{
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toolchain.Cflags(),
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"${config.CommonGlobalCflags}",
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fmt.Sprintf("${config.%sGlobalCflags}", hod),
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toolchain.ToolchainCflags(),
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productExtraCflags,
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}, " "))
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ctx.Strict(makePrefix+"GLOBAL_CONLYFLAGS", strings.Join([]string{
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"${config.CommonGlobalConlyflags}",
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}, " "))
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ctx.Strict(makePrefix+"GLOBAL_CPPFLAGS", strings.Join([]string{
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"${config.CommonGlobalCppflags}",
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fmt.Sprintf("${config.%sGlobalCppflags}", hod),
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toolchain.Cppflags(),
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}, " "))
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ctx.Strict(makePrefix+"GLOBAL_LDFLAGS", strings.Join([]string{
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fmt.Sprintf("${config.%sGlobalLdflags}", hod),
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toolchain.Ldflags(),
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toolchain.ToolchainLdflags(),
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productExtraLdflags,
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}, " "))
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ctx.Strict(makePrefix+"GLOBAL_LLDFLAGS", strings.Join([]string{
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fmt.Sprintf("${config.%sGlobalLldflags}", hod),
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toolchain.Ldflags(),
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toolchain.ToolchainLdflags(),
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productExtraLdflags,
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}, " "))
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includeFlags, err := ctx.Eval(toolchain.IncludeFlags())
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if err != nil {
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panic(err)
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}
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includes, systemIncludes := splitSystemIncludes(ctx, includeFlags)
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ctx.StrictRaw(makePrefix+"C_INCLUDES", strings.Join(includes, " "))
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ctx.StrictRaw(makePrefix+"C_SYSTEM_INCLUDES", strings.Join(systemIncludes, " "))
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if target.Arch.ArchType == android.Arm {
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flags, err := toolchain.InstructionSetFlags("arm")
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if err != nil {
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panic(err)
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}
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ctx.Strict(makePrefix+"arm_CFLAGS", flags)
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flags, err = toolchain.InstructionSetFlags("thumb")
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if err != nil {
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panic(err)
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}
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ctx.Strict(makePrefix+"thumb_CFLAGS", flags)
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}
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if toolchain.ClangSupported() {
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clangPrefix := secondPrefix + "CLANG_" + typePrefix
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clangExtras := "-target " + toolchain.ClangTriple()
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clangExtras += " -B" + config.ToolPath(toolchain)
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ctx.Strict(clangPrefix+"GLOBAL_CFLAGS", strings.Join([]string{
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toolchain.ClangCflags(),
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"${config.CommonClangGlobalCflags}",
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fmt.Sprintf("${config.%sClangGlobalCflags}", hod),
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toolchain.ToolchainClangCflags(),
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clangExtras,
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productExtraCflags,
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}, " "))
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ctx.Strict(clangPrefix+"GLOBAL_CPPFLAGS", strings.Join([]string{
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"${config.CommonClangGlobalCppflags}",
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fmt.Sprintf("${config.%sGlobalCppflags}", hod),
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toolchain.ClangCppflags(),
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}, " "))
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ctx.Strict(clangPrefix+"GLOBAL_LDFLAGS", strings.Join([]string{
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fmt.Sprintf("${config.%sGlobalLdflags}", hod),
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toolchain.ClangLdflags(),
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toolchain.ToolchainClangLdflags(),
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productExtraLdflags,
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clangExtras,
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}, " "))
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ctx.Strict(clangPrefix+"GLOBAL_LLDFLAGS", strings.Join([]string{
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fmt.Sprintf("${config.%sGlobalLldflags}", hod),
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toolchain.ClangLldflags(),
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toolchain.ToolchainClangLdflags(),
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productExtraLdflags,
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clangExtras,
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}, " "))
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if target.Os.Class == android.Device {
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ctx.Strict(secondPrefix+"ADDRESS_SANITIZER_RUNTIME_LIBRARY", strings.TrimSuffix(config.AddressSanitizerRuntimeLibrary(toolchain), ".so"))
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ctx.Strict(secondPrefix+"HWADDRESS_SANITIZER_RUNTIME_LIBRARY", strings.TrimSuffix(config.HWAddressSanitizerRuntimeLibrary(toolchain), ".so"))
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ctx.Strict(secondPrefix+"HWADDRESS_SANITIZER_STATIC_LIBRARY", strings.TrimSuffix(config.HWAddressSanitizerStaticLibrary(toolchain), ".a"))
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ctx.Strict(secondPrefix+"UBSAN_RUNTIME_LIBRARY", strings.TrimSuffix(config.UndefinedBehaviorSanitizerRuntimeLibrary(toolchain), ".so"))
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ctx.Strict(secondPrefix+"UBSAN_MINIMAL_RUNTIME_LIBRARY", strings.TrimSuffix(config.UndefinedBehaviorSanitizerMinimalRuntimeLibrary(toolchain), ".a"))
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ctx.Strict(secondPrefix+"TSAN_RUNTIME_LIBRARY", strings.TrimSuffix(config.ThreadSanitizerRuntimeLibrary(toolchain), ".so"))
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ctx.Strict(secondPrefix+"SCUDO_RUNTIME_LIBRARY", strings.TrimSuffix(config.ScudoRuntimeLibrary(toolchain), ".so"))
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}
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// This is used by external/gentoo/...
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ctx.Strict("CLANG_CONFIG_"+target.Arch.ArchType.Name+"_"+typePrefix+"TRIPLE",
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toolchain.ClangTriple())
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ctx.Strict(makePrefix+"CLANG_SUPPORTED", "true")
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} else {
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ctx.Strict(makePrefix+"CLANG_SUPPORTED", "")
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}
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ctx.Strict(makePrefix+"CC", gccCmd(toolchain, "gcc"))
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ctx.Strict(makePrefix+"CXX", gccCmd(toolchain, "g++"))
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if target.Os == android.Darwin {
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ctx.Strict(makePrefix+"AR", "${config.MacArPath}")
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ctx.Strict(makePrefix+"NM", "${config.MacToolPath}/nm")
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ctx.Strict(makePrefix+"OTOOL", "${config.MacToolPath}/otool")
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ctx.Strict(makePrefix+"STRIP", "${config.MacStripPath}")
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} else {
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ctx.Strict(makePrefix+"AR", "${config.ClangBin}/llvm-ar")
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ctx.Strict(makePrefix+"READELF", gccCmd(toolchain, "readelf"))
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ctx.Strict(makePrefix+"NM", gccCmd(toolchain, "nm"))
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ctx.Strict(makePrefix+"STRIP", gccCmd(toolchain, "strip"))
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}
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if target.Os == android.Windows {
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ctx.Strict(makePrefix+"OBJDUMP", gccCmd(toolchain, "objdump"))
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}
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if target.Os.Class == android.Device {
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ctx.Strict(makePrefix+"OBJCOPY", gccCmd(toolchain, "objcopy"))
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ctx.Strict(makePrefix+"LD", gccCmd(toolchain, "ld"))
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ctx.Strict(makePrefix+"GCC_VERSION", toolchain.GccVersion())
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ctx.Strict(makePrefix+"NDK_GCC_VERSION", toolchain.GccVersion())
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ctx.Strict(makePrefix+"NDK_TRIPLE", config.NDKTriple(toolchain))
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}
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if target.Os.Class == android.Host || target.Os.Class == android.HostCross {
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ctx.Strict(makePrefix+"AVAILABLE_LIBRARIES", strings.Join(toolchain.AvailableLibraries(), " "))
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}
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ctx.Strict(makePrefix+"TOOLCHAIN_ROOT", toolchain.GccRoot())
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ctx.Strict(makePrefix+"TOOLS_PREFIX", gccCmd(toolchain, ""))
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ctx.Strict(makePrefix+"SHLIB_SUFFIX", toolchain.ShlibSuffix())
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ctx.Strict(makePrefix+"EXECUTABLE_SUFFIX", toolchain.ExecutableSuffix())
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}
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func splitSystemIncludes(ctx android.MakeVarsContext, val string) (includes, systemIncludes []string) {
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flags, err := ctx.Eval(val)
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if err != nil {
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panic(err)
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}
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extract := func(flags string, dirs []string, prefix string) (string, []string, bool) {
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if strings.HasPrefix(flags, prefix) {
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flags = strings.TrimPrefix(flags, prefix)
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flags = strings.TrimLeft(flags, " ")
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s := strings.SplitN(flags, " ", 2)
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dirs = append(dirs, s[0])
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if len(s) > 1 {
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return strings.TrimLeft(s[1], " "), dirs, true
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}
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return "", dirs, true
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} else {
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return flags, dirs, false
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}
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}
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flags = strings.TrimLeft(flags, " ")
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for flags != "" {
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found := false
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flags, includes, found = extract(flags, includes, "-I")
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if !found {
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flags, systemIncludes, found = extract(flags, systemIncludes, "-isystem ")
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}
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if !found {
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panic(fmt.Errorf("Unexpected flag in %q", flags))
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}
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}
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return includes, systemIncludes
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}
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func joinLocalTidyChecks(checks []config.PathBasedTidyCheck) string {
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rets := make([]string, len(checks))
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for i, check := range config.DefaultLocalTidyChecks {
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rets[i] = check.PathPrefix + ":" + check.Checks
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}
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return strings.Join(rets, " ")
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}
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