Add ARM32 device Rust toolchain.
Bug: 141207434
Test: build example rust device module.
Change-Id: I2d5b45ba09f386e1c7da7d7cdc58f13f31135863
diff --git a/rust/config/arm_device.go b/rust/config/arm_device.go
new file mode 100644
index 0000000..aedb42b
--- /dev/null
+++ b/rust/config/arm_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 (
+ ArmRustFlags = []string{}
+ ArmArchFeatureRustFlags = map[string][]string{}
+ ArmLinkFlags = []string{
+ "-Wl,--icf=safe",
+ "-Wl,-m,armelf",
+ }
+
+ ArmArchVariantRustFlags = map[string][]string{
+ "armv7-a": []string{},
+ "armv7-a-neon": []string{},
+ "armv8-a": []string{},
+ "armv8-2a": []string{},
+ }
+)
+
+func init() {
+ registerToolchainFactory(android.Android, android.Arm, ArmToolchainFactory)
+
+ pctx.StaticVariable("ArmToolchainRustFlags", strings.Join(ArmRustFlags, " "))
+ pctx.StaticVariable("ArmToolchainLinkFlags", strings.Join(ArmLinkFlags, " "))
+
+ for variant, rustFlags := range ArmArchVariantRustFlags {
+ pctx.StaticVariable("Arm"+variant+"VariantRustFlags",
+ strings.Join(rustFlags, " "))
+ }
+
+}
+
+type toolchainArm struct {
+ toolchain64Bit
+ toolchainRustFlags string
+}
+
+func (t *toolchainArm) RustTriple() string {
+ return "arm-linux-androideabi"
+}
+
+func (t *toolchainArm) ToolchainLinkFlags() string {
+ return "${config.DeviceGlobalLinkFlags} ${config.ArmToolchainLinkFlags}"
+}
+
+func (t *toolchainArm) ToolchainRustFlags() string {
+ return t.toolchainRustFlags
+}
+
+func (t *toolchainArm) RustFlags() string {
+ return "${config.ArmToolchainRustFlags}"
+}
+
+func (t *toolchainArm) Supported() bool {
+ return true
+}
+
+func ArmToolchainFactory(arch android.Arch) Toolchain {
+ toolchainRustFlags := []string{
+ "${config.ArmToolchainRustFlags}",
+ "${config.Arm" + arch.ArchVariant + "VariantRustFlags}",
+ }
+
+ toolchainRustFlags = append(toolchainRustFlags, deviceGlobalRustFlags...)
+
+ for _, feature := range arch.ArchFeatures {
+ toolchainRustFlags = append(toolchainRustFlags, ArmArchFeatureRustFlags[feature]...)
+ }
+
+ return &toolchainArm{
+ toolchainRustFlags: strings.Join(toolchainRustFlags, " "),
+ }
+}