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// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package art
import (
"android/soong/android"
"android/soong/cc"
"fmt"
"sync"
"github.com/google/blueprint/proptools"
)
var supportedArches = []string{"arm", "arm64", "mips", "mips64", "x86", "x86_64"}
func globalFlags(ctx android.BaseContext) ([]string, []string) {
var cflags []string
var asflags []string
opt := envDefault(ctx, "ART_NDEBUG_OPT_FLAG", "-O3")
cflags = append(cflags, opt)
tlab := false
gcType := envDefault(ctx, "ART_DEFAULT_GC_TYPE", "CMS")
if envTrue(ctx, "ART_TEST_DEBUG_GC") {
gcType = "SS"
tlab = true
}
cflags = append(cflags, "-DART_DEFAULT_GC_TYPE_IS_"+gcType)
if tlab {
cflags = append(cflags, "-DART_USE_TLAB=1")
}
imtSize := envDefault(ctx, "ART_IMT_SIZE", "43")
cflags = append(cflags, "-DIMT_SIZE="+imtSize)
if envTrue(ctx, "ART_HEAP_POISONING") {
cflags = append(cflags, "-DART_HEAP_POISONING=1")
asflags = append(asflags, "-DART_HEAP_POISONING=1")
}
if !envFalse(ctx, "ART_USE_READ_BARRIER") && ctx.AConfig().ArtUseReadBarrier() {
// Used to change the read barrier type. Valid values are BAKER, BROOKS,
// TABLELOOKUP. The default is BAKER.
barrierType := envDefault(ctx, "ART_READ_BARRIER_TYPE", "BAKER")
cflags = append(cflags,
"-DART_USE_READ_BARRIER=1",
"-DART_READ_BARRIER_TYPE_IS_"+barrierType+"=1")
asflags = append(asflags,
"-DART_USE_READ_BARRIER=1",
"-DART_READ_BARRIER_TYPE_IS_"+barrierType+"=1")
}
// We need larger stack overflow guards for ASAN, as the compiled code will have
// larger frame sizes. For simplicity, just use global not-target-specific cflags.
// Note: We increase this for both debug and non-debug, as the overflow gap will
// be compiled into managed code. We always preopt (and build core images) with
// the debug version. So make the gap consistent (and adjust for the worst).
if len(ctx.AConfig().SanitizeDevice()) > 0 || len(ctx.AConfig().SanitizeHost()) > 0 {
cflags = append(cflags,
"-DART_STACK_OVERFLOW_GAP_arm=8192",
"-DART_STACK_OVERFLOW_GAP_arm64=8192",
"-DART_STACK_OVERFLOW_GAP_mips=16384",
"-DART_STACK_OVERFLOW_GAP_mips64=16384",
"-DART_STACK_OVERFLOW_GAP_x86=16384",
"-DART_STACK_OVERFLOW_GAP_x86_64=20480")
} else {
cflags = append(cflags,
"-DART_STACK_OVERFLOW_GAP_arm=8192",
"-DART_STACK_OVERFLOW_GAP_arm64=8192",
"-DART_STACK_OVERFLOW_GAP_mips=16384",
"-DART_STACK_OVERFLOW_GAP_mips64=16384",
"-DART_STACK_OVERFLOW_GAP_x86=8192",
"-DART_STACK_OVERFLOW_GAP_x86_64=8192")
}
if envTrue(ctx, "ART_ENABLE_ADDRESS_SANITIZER") {
// Used to enable full sanitization, i.e., user poisoning, under ASAN.
cflags = append(cflags, "-DART_ENABLE_ADDRESS_SANITIZER=1")
asflags = append(asflags, "-DART_ENABLE_ADDRESS_SANITIZER=1")
}
if envTrue(ctx, "ART_MIPS32_CHECK_ALIGNMENT") {
// Enable the use of MIPS32 CHECK_ALIGNMENT macro for debugging purposes
asflags = append(asflags, "-DART_MIPS32_CHECK_ALIGNMENT")
}
return cflags, asflags
}
func debugFlags(ctx android.BaseContext) []string {
var cflags []string
opt := envDefault(ctx, "ART_DEBUG_OPT_FLAG", "-O2")
cflags = append(cflags, opt)
return cflags
}
func deviceFlags(ctx android.BaseContext) []string {
var cflags []string
deviceFrameSizeLimit := 1736
if len(ctx.AConfig().SanitizeDevice()) > 0 {
deviceFrameSizeLimit = 7400
}
cflags = append(cflags,
fmt.Sprintf("-Wframe-larger-than=%d", deviceFrameSizeLimit),
fmt.Sprintf("-DART_FRAME_SIZE_LIMIT=%d", deviceFrameSizeLimit),
)
cflags = append(cflags, "-DART_BASE_ADDRESS="+ctx.AConfig().LibartImgDeviceBaseAddress())
if envTrue(ctx, "ART_TARGET_LINUX") {
cflags = append(cflags, "-DART_TARGET_LINUX")
} else {
cflags = append(cflags, "-DART_TARGET_ANDROID")
}
minDelta := envDefault(ctx, "LIBART_IMG_TARGET_MIN_BASE_ADDRESS_DELTA", "-0x1000000")
maxDelta := envDefault(ctx, "LIBART_IMG_TARGET_MAX_BASE_ADDRESS_DELTA", "0x1000000")
cflags = append(cflags, "-DART_BASE_ADDRESS_MIN_DELTA="+minDelta)
cflags = append(cflags, "-DART_BASE_ADDRESS_MAX_DELTA="+maxDelta)
return cflags
}
func hostFlags(ctx android.BaseContext) []string {
var cflags []string
hostFrameSizeLimit := 1736
if len(ctx.AConfig().SanitizeHost()) > 0 {
// art/test/137-cfi/cfi.cc
// error: stack frame size of 1944 bytes in function 'Java_Main_unwindInProcess'
hostFrameSizeLimit = 6400
}
cflags = append(cflags,
fmt.Sprintf("-Wframe-larger-than=%d", hostFrameSizeLimit),
fmt.Sprintf("-DART_FRAME_SIZE_LIMIT=%d", hostFrameSizeLimit),
)
cflags = append(cflags, "-DART_BASE_ADDRESS="+ctx.AConfig().LibartImgHostBaseAddress())
minDelta := envDefault(ctx, "LIBART_IMG_HOST_MIN_BASE_ADDRESS_DELTA", "-0x1000000")
maxDelta := envDefault(ctx, "LIBART_IMG_HOST_MAX_BASE_ADDRESS_DELTA", "0x1000000")
cflags = append(cflags, "-DART_BASE_ADDRESS_MIN_DELTA="+minDelta)
cflags = append(cflags, "-DART_BASE_ADDRESS_MAX_DELTA="+maxDelta)
if len(ctx.AConfig().SanitizeHost()) > 0 && !envFalse(ctx, "ART_ENABLE_ADDRESS_SANITIZER") {
// We enable full sanitization on the host by default.
cflags = append(cflags, "-DART_ENABLE_ADDRESS_SANITIZER=1")
}
return cflags
}
func globalDefaults(ctx android.LoadHookContext) {
type props struct {
Target struct {
Android struct {
Cflags []string
}
Host struct {
Cflags []string
}
}
Cflags []string
Asflags []string
Sanitize struct {
Recover []string
}
}
p := &props{}
p.Cflags, p.Asflags = globalFlags(ctx)
p.Target.Android.Cflags = deviceFlags(ctx)
p.Target.Host.Cflags = hostFlags(ctx)
if envTrue(ctx, "ART_DEX_FILE_ACCESS_TRACKING") {
p.Cflags = append(p.Cflags, "-DART_DEX_FILE_ACCESS_TRACKING")
p.Sanitize.Recover = []string{
"address",
}
}
ctx.AppendProperties(p)
}
func debugDefaults(ctx android.LoadHookContext) {
type props struct {
Cflags []string
}
p := &props{}
p.Cflags = debugFlags(ctx)
ctx.AppendProperties(p)
}
func customLinker(ctx android.LoadHookContext) {
linker := envDefault(ctx, "CUSTOM_TARGET_LINKER", "")
type props struct {
DynamicLinker string
}
p := &props{}
if linker != "" {
p.DynamicLinker = linker
}
ctx.AppendProperties(p)
}
func prefer32Bit(ctx android.LoadHookContext) {
type props struct {
Target struct {
Host struct {
Compile_multilib *string
}
}
}
p := &props{}
if envTrue(ctx, "HOST_PREFER_32_BIT") {
p.Target.Host.Compile_multilib = proptools.StringPtr("prefer32")
}
ctx.AppendProperties(p)
}
func testMap(config android.Config) map[string][]string {
return config.Once("artTests", func() interface{} {
return make(map[string][]string)
}).(map[string][]string)
}
func testInstall(ctx android.InstallHookContext) {
testMap := testMap(ctx.AConfig())
var name string
if ctx.Host() {
name = "host_"
} else {
name = "device_"
}
name += ctx.Arch().ArchType.String() + "_" + ctx.ModuleName()
artTestMutex.Lock()
defer artTestMutex.Unlock()
tests := testMap[name]
tests = append(tests, ctx.Path().RelPathString())
testMap[name] = tests
}
var artTestMutex sync.Mutex
func init() {
android.RegisterModuleType("art_cc_library", artLibrary)
android.RegisterModuleType("art_cc_static_library", artStaticLibrary)
android.RegisterModuleType("art_cc_binary", artBinary)
android.RegisterModuleType("art_cc_test", artTest)
android.RegisterModuleType("art_cc_test_library", artTestLibrary)
android.RegisterModuleType("art_cc_defaults", artDefaultsFactory)
android.RegisterModuleType("art_global_defaults", artGlobalDefaultsFactory)
android.RegisterModuleType("art_debug_defaults", artDebugDefaultsFactory)
}
func artGlobalDefaultsFactory() android.Module {
module := artDefaultsFactory()
android.AddLoadHook(module, globalDefaults)
return module
}
func artDebugDefaultsFactory() android.Module {
module := artDefaultsFactory()
android.AddLoadHook(module, debugDefaults)
return module
}
func artDefaultsFactory() android.Module {
c := &codegenProperties{}
module := cc.DefaultsFactory(c)
android.AddLoadHook(module, func(ctx android.LoadHookContext) { codegen(ctx, c, true) })
return module
}
func artLibrary() android.Module {
m, _ := cc.NewLibrary(android.HostAndDeviceSupported)
module := m.Init()
installCodegenCustomizer(module, true)
return module
}
func artStaticLibrary() android.Module {
m, library := cc.NewLibrary(android.HostAndDeviceSupported)
library.BuildOnlyStatic()
module := m.Init()
installCodegenCustomizer(module, true)
return module
}
func artBinary() android.Module {
binary, _ := cc.NewBinary(android.HostAndDeviceSupported)
module := binary.Init()
android.AddLoadHook(module, customLinker)
android.AddLoadHook(module, prefer32Bit)
return module
}
func artTest() android.Module {
test := cc.NewTest(android.HostAndDeviceSupported)
module := test.Init()
installCodegenCustomizer(module, false)
android.AddLoadHook(module, customLinker)
android.AddLoadHook(module, prefer32Bit)
android.AddInstallHook(module, testInstall)
return module
}
func artTestLibrary() android.Module {
test := cc.NewTestLibrary(android.HostAndDeviceSupported)
module := test.Init()
installCodegenCustomizer(module, false)
android.AddLoadHook(module, prefer32Bit)
android.AddInstallHook(module, testInstall)
return module
}
func envDefault(ctx android.BaseContext, key string, defaultValue string) string {
ret := ctx.AConfig().Getenv(key)
if ret == "" {
return defaultValue
}
return ret
}
func envTrue(ctx android.BaseContext, key string) bool {
return ctx.AConfig().Getenv(key) == "true"
}
func envFalse(ctx android.BaseContext, key string) bool {
return ctx.AConfig().Getenv(key) == "false"
}