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// Copyright 2015 Google Inc. All rights reserved.
//
// 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 config
import (
"fmt"
"strings"
"android/soong/android"
)
var (
armToolchainCflags = []string{
"-mthumb-interwork",
"-msoft-float",
}
armCflags = []string{
"-fomit-frame-pointer",
}
armCppflags = []string{}
armLdflags = []string{
"-Wl,--icf=safe",
"-Wl,--hash-style=gnu",
"-Wl,-m,armelf",
}
armLldflags = ClangFilterUnknownLldflags(armLdflags)
armArmCflags = []string{
"-fstrict-aliasing",
}
armThumbCflags = []string{
"-mthumb",
"-Os",
}
armClangArchVariantCflags = map[string][]string{
"armv7-a": []string{
"-march=armv7-a",
"-mfloat-abi=softfp",
"-mfpu=vfpv3-d16",
},
"armv7-a-neon": []string{
"-march=armv7-a",
"-mfloat-abi=softfp",
"-mfpu=neon",
},
"armv8-a": []string{
"-march=armv8-a",
"-mfloat-abi=softfp",
"-mfpu=neon-fp-armv8",
},
"armv8-2a": []string{
"-march=armv8.2-a",
"-mfloat-abi=softfp",
"-mfpu=neon-fp-armv8",
},
}
armClangCpuVariantCflags = map[string][]string{
"cortex-a7": []string{
"-mcpu=cortex-a7",
"-mfpu=neon-vfpv4",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
"cortex-a8": []string{
"-mcpu=cortex-a8",
},
"cortex-a15": []string{
"-mcpu=cortex-a15",
"-mfpu=neon-vfpv4",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
"cortex-a53": []string{
"-mcpu=cortex-a53",
"-mfpu=neon-fp-armv8",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
"cortex-a55": []string{
"-mcpu=cortex-a55",
"-mfpu=neon-fp-armv8",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
"cortex-a75": []string{
"-mcpu=cortex-a55",
"-mfpu=neon-fp-armv8",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
"cortex-a76": []string{
"-mcpu=cortex-a55",
"-mfpu=neon-fp-armv8",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
"krait": []string{
"-mcpu=krait",
"-mfpu=neon-vfpv4",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
"kryo": []string{
// Use cortex-a53 because the GNU assembler doesn't recognize -mcpu=kryo
// even though clang does.
"-mcpu=cortex-a53",
"-mfpu=neon-fp-armv8",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
"kryo385": []string{
// Use cortex-a53 because kryo385 is not supported in GCC/clang.
"-mcpu=cortex-a53",
// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
// don't advertise.
// TODO This is a hack and we need to add it for each processor that supports LPAE until some
// better solution comes around. See Bug 27340895
"-D__ARM_FEATURE_LPAE=1",
},
}
)
const (
armGccVersion = "4.9"
)
func init() {
pctx.StaticVariable("armGccVersion", armGccVersion)
pctx.SourcePathVariable("ArmGccRoot",
"prebuilts/gcc/${HostPrebuiltTag}/arm/arm-linux-androideabi-${armGccVersion}")
pctx.StaticVariable("ArmLdflags", strings.Join(armLdflags, " "))
pctx.StaticVariable("ArmLldflags", strings.Join(armLldflags, " "))
// Clang cflags
pctx.StaticVariable("ArmToolchainClangCflags", strings.Join(ClangFilterUnknownCflags(armToolchainCflags), " "))
pctx.StaticVariable("ArmClangCflags", strings.Join(ClangFilterUnknownCflags(armCflags), " "))
pctx.StaticVariable("ArmClangLdflags", strings.Join(ClangFilterUnknownCflags(armLdflags), " "))
pctx.StaticVariable("ArmClangLldflags", strings.Join(ClangFilterUnknownCflags(armLldflags), " "))
pctx.StaticVariable("ArmClangCppflags", strings.Join(ClangFilterUnknownCflags(armCppflags), " "))
// Clang ARM vs. Thumb instruction set cflags
pctx.StaticVariable("ArmClangArmCflags", strings.Join(ClangFilterUnknownCflags(armArmCflags), " "))
pctx.StaticVariable("ArmClangThumbCflags", strings.Join(ClangFilterUnknownCflags(armThumbCflags), " "))
// Clang arch variant cflags
pctx.StaticVariable("ArmClangArmv7ACflags",
strings.Join(armClangArchVariantCflags["armv7-a"], " "))
pctx.StaticVariable("ArmClangArmv7ANeonCflags",
strings.Join(armClangArchVariantCflags["armv7-a-neon"], " "))
pctx.StaticVariable("ArmClangArmv8ACflags",
strings.Join(armClangArchVariantCflags["armv8-a"], " "))
pctx.StaticVariable("ArmClangArmv82ACflags",
strings.Join(armClangArchVariantCflags["armv8-2a"], " "))
// Clang cpu variant cflags
pctx.StaticVariable("ArmClangGenericCflags",
strings.Join(armClangCpuVariantCflags[""], " "))
pctx.StaticVariable("ArmClangCortexA7Cflags",
strings.Join(armClangCpuVariantCflags["cortex-a7"], " "))
pctx.StaticVariable("ArmClangCortexA8Cflags",
strings.Join(armClangCpuVariantCflags["cortex-a8"], " "))
pctx.StaticVariable("ArmClangCortexA15Cflags",
strings.Join(armClangCpuVariantCflags["cortex-a15"], " "))
pctx.StaticVariable("ArmClangCortexA53Cflags",
strings.Join(armClangCpuVariantCflags["cortex-a53"], " "))
pctx.StaticVariable("ArmClangCortexA55Cflags",
strings.Join(armClangCpuVariantCflags["cortex-a55"], " "))
pctx.StaticVariable("ArmClangKraitCflags",
strings.Join(armClangCpuVariantCflags["krait"], " "))
pctx.StaticVariable("ArmClangKryoCflags",
strings.Join(armClangCpuVariantCflags["kryo"], " "))
}
var (
armClangArchVariantCflagsVar = map[string]string{
"armv7-a": "${config.ArmClangArmv7ACflags}",
"armv7-a-neon": "${config.ArmClangArmv7ANeonCflags}",
"armv8-a": "${config.ArmClangArmv8ACflags}",
"armv8-2a": "${config.ArmClangArmv82ACflags}",
}
armClangCpuVariantCflagsVar = map[string]string{
"": "${config.ArmClangGenericCflags}",
"cortex-a7": "${config.ArmClangCortexA7Cflags}",
"cortex-a8": "${config.ArmClangCortexA8Cflags}",
"cortex-a15": "${config.ArmClangCortexA15Cflags}",
"cortex-a53": "${config.ArmClangCortexA53Cflags}",
"cortex-a53.a57": "${config.ArmClangCortexA53Cflags}",
"cortex-a55": "${config.ArmClangCortexA55Cflags}",
"cortex-a72": "${config.ArmClangCortexA53Cflags}",
"cortex-a73": "${config.ArmClangCortexA53Cflags}",
"cortex-a75": "${config.ArmClangCortexA55Cflags}",
"cortex-a76": "${config.ArmClangCortexA55Cflags}",
"krait": "${config.ArmClangKraitCflags}",
"kryo": "${config.ArmClangKryoCflags}",
"kryo385": "${config.ArmClangCortexA53Cflags}",
"exynos-m1": "${config.ArmClangCortexA53Cflags}",
"exynos-m2": "${config.ArmClangCortexA53Cflags}",
}
)
type toolchainArm struct {
toolchain32Bit
ldflags string
lldflags string
toolchainClangCflags string
}
func (t *toolchainArm) Name() string {
return "arm"
}
func (t *toolchainArm) GccRoot() string {
return "${config.ArmGccRoot}"
}
func (t *toolchainArm) GccTriple() string {
return "arm-linux-androideabi"
}
func (t *toolchainArm) GccVersion() string {
return armGccVersion
}
func (t *toolchainArm) IncludeFlags() string {
return ""
}
func (t *toolchainArm) ClangTriple() string {
// http://b/72619014 work around llvm LTO bug.
return "armv7a-linux-androideabi"
}
func (t *toolchainArm) ndkTriple() string {
// Use current NDK include path, while ClangTriple is changed.
return t.GccTriple()
}
func (t *toolchainArm) ToolchainClangCflags() string {
return t.toolchainClangCflags
}
func (t *toolchainArm) ClangCflags() string {
return "${config.ArmClangCflags}"
}
func (t *toolchainArm) ClangCppflags() string {
return "${config.ArmClangCppflags}"
}
func (t *toolchainArm) ClangLdflags() string {
return t.ldflags
}
func (t *toolchainArm) ClangLldflags() string {
return t.lldflags // TODO: handle V8 cases
}
func (t *toolchainArm) ClangInstructionSetFlags(isa string) (string, error) {
switch isa {
case "arm":
return "${config.ArmClangArmCflags}", nil
case "thumb", "":
return "${config.ArmClangThumbCflags}", nil
default:
return t.toolchainBase.ClangInstructionSetFlags(isa)
}
}
func (toolchainArm) LibclangRuntimeLibraryArch() string {
return "arm"
}
func armToolchainFactory(arch android.Arch) Toolchain {
var fixCortexA8 string
toolchainClangCflags := make([]string, 2, 3)
toolchainClangCflags[0] = "${config.ArmToolchainClangCflags}"
toolchainClangCflags[1] = armClangArchVariantCflagsVar[arch.ArchVariant]
toolchainClangCflags = append(toolchainClangCflags,
variantOrDefault(armClangCpuVariantCflagsVar, arch.CpuVariant))
switch arch.ArchVariant {
case "armv7-a-neon":
switch arch.CpuVariant {
case "cortex-a8", "":
// Generic ARM might be a Cortex A8 -- better safe than sorry
fixCortexA8 = "-Wl,--fix-cortex-a8"
default:
fixCortexA8 = "-Wl,--no-fix-cortex-a8"
}
case "armv7-a":
fixCortexA8 = "-Wl,--fix-cortex-a8"
case "armv8-a", "armv8-2a":
// Nothing extra for armv8-a/armv8-2a
default:
panic(fmt.Sprintf("Unknown ARM architecture version: %q", arch.ArchVariant))
}
return &toolchainArm{
ldflags: strings.Join([]string{
"${config.ArmLdflags}",
fixCortexA8,
}, " "),
lldflags: "${config.ArmLldflags}",
toolchainClangCflags: strings.Join(toolchainClangCflags, " "),
}
}
func init() {
registerToolchainFactory(android.Android, android.Arm, armToolchainFactory)
}