Add AArch64 device Rust toolchain.
Bug: 141207434
Test: build example rust device module.
Change-Id: I0932a614942bf4a4d4b6c153fcc4fc79c7f202bd
diff --git a/rust/config/arm64_device.go b/rust/config/arm64_device.go
new file mode 100644
index 0000000..0264052
--- /dev/null
+++ b/rust/config/arm64_device.go
@@ -0,0 +1,92 @@
+// Copyright 2019 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 config
+
+import (
+ "strings"
+
+ "android/soong/android"
+)
+
+var (
+ Arm64RustFlags = []string{}
+ Arm64ArchFeatureRustFlags = map[string][]string{}
+ Arm64LinkFlags = []string{
+ "-Wl,--icf=safe",
+ "-Wl,-z,max-page-size=4096",
+
+ "-Wl,-execute-only",
+ }
+
+ Arm64ArchVariantRustFlags = map[string][]string{
+ "armv8-a": []string{},
+ "armv8-2a": []string{},
+ }
+)
+
+func init() {
+ registerToolchainFactory(android.Android, android.Arm64, Arm64ToolchainFactory)
+
+ pctx.StaticVariable("Arm64ToolchainRustFlags", strings.Join(Arm64RustFlags, " "))
+ pctx.StaticVariable("Arm64ToolchainLinkFlags", strings.Join(Arm64LinkFlags, " "))
+
+ for variant, rustFlags := range Arm64ArchVariantRustFlags {
+ pctx.StaticVariable("Arm64"+variant+"VariantRustFlags",
+ strings.Join(rustFlags, " "))
+ }
+
+}
+
+type toolchainArm64 struct {
+ toolchain64Bit
+ toolchainRustFlags string
+}
+
+func (t *toolchainArm64) RustTriple() string {
+ return "aarch64-linux-android"
+}
+
+func (t *toolchainArm64) ToolchainLinkFlags() string {
+ return "${config.DeviceGlobalLinkFlags} ${config.Arm64ToolchainLinkFlags}"
+}
+
+func (t *toolchainArm64) ToolchainRustFlags() string {
+ return t.toolchainRustFlags
+}
+
+func (t *toolchainArm64) RustFlags() string {
+ return "${config.Arm64ToolchainRustFlags}"
+}
+
+func (t *toolchainArm64) Supported() bool {
+ return true
+}
+
+func Arm64ToolchainFactory(arch android.Arch) Toolchain {
+ toolchainRustFlags := []string{
+ "${config.Arm64ToolchainRustFlags}",
+ "${config.Arm64" + arch.ArchVariant + "VariantRustFlags}",
+ }
+
+ toolchainRustFlags = append(toolchainRustFlags, deviceGlobalRustFlags...)
+
+ for _, feature := range arch.ArchFeatures {
+ toolchainRustFlags = append(toolchainRustFlags, Arm64ArchFeatureRustFlags[feature]...)
+ }
+
+ return &toolchainArm64{
+ toolchainRustFlags: strings.Join(toolchainRustFlags, " "),
+ }
+}