Merge "Switch platform EH unwinder to prebuilt LLVM libunwind"
diff --git a/apex/allowed_deps.txt b/apex/allowed_deps.txt
index 786496f..81691f1 100644
--- a/apex/allowed_deps.txt
+++ b/apex/allowed_deps.txt
@@ -569,6 +569,7 @@
prebuilt_libclang_rt.builtins-arm-android(minSdkVersion:(no version))
prebuilt_libclang_rt.builtins-i686-android(minSdkVersion:(no version))
prebuilt_libclang_rt.builtins-x86_64-android(minSdkVersion:(no version))
+prebuilt_libunwind(minSdkVersion:(no version))
prebuilt_test_framework-sdkextensions(minSdkVersion:(no version))
server_configurable_flags(minSdkVersion:29)
service-permission(minSdkVersion:current)
diff --git a/apex/apex.go b/apex/apex.go
index 376811a..4a9a9a3 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -2854,7 +2854,7 @@
"libprofile-clang-extras_ndk",
"libprofile-extras",
"libprofile-extras_ndk",
- "libunwind_llvm",
+ "libunwind",
}
return m
}
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 58739b0..42b2404 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -1752,10 +1752,10 @@
// ensure apex variant of c++ is linked with static unwinder
cm := ctx.ModuleForTests("libc++", "android_arm64_armv8-a_shared_apex29").Module().(*cc.Module)
- ensureListContains(t, cm.Properties.AndroidMkStaticLibs, "libgcc_stripped")
+ ensureListContains(t, cm.Properties.AndroidMkStaticLibs, "libunwind")
// note that platform variant is not.
cm = ctx.ModuleForTests("libc++", "android_arm64_armv8-a_shared").Module().(*cc.Module)
- ensureListNotContains(t, cm.Properties.AndroidMkStaticLibs, "libgcc_stripped")
+ ensureListNotContains(t, cm.Properties.AndroidMkStaticLibs, "libunwind")
}
func TestApexMinSdkVersion_ErrorIfIncompatibleStubs(t *testing.T) {
diff --git a/cc/config/global.go b/cc/config/global.go
index d47e0ce..c34f936 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -90,9 +90,12 @@
"-Wl,--warn-shared-textrel",
"-Wl,--fatal-warnings",
"-Wl,--no-undefined-version",
+ // TODO: Eventually we should link against a libunwind.a with hidden symbols, and then these
+ // --exclude-libs arguments can be removed.
"-Wl,--exclude-libs,libgcc.a",
"-Wl,--exclude-libs,libgcc_stripped.a",
"-Wl,--exclude-libs,libunwind_llvm.a",
+ "-Wl,--exclude-libs,libunwind.a",
}
deviceGlobalLldflags = append(ClangFilterUnknownLldflags(deviceGlobalLdflags),
diff --git a/cc/stl.go b/cc/stl.go
index 406fa3a..75fab17 100644
--- a/cc/stl.go
+++ b/cc/stl.go
@@ -140,11 +140,7 @@
}
func staticUnwinder(ctx android.BaseModuleContext) string {
- if ctx.Arch().ArchType == android.Arm {
- return "libunwind_llvm"
- } else {
- return "libgcc_stripped"
- }
+ return "libunwind"
}
func (stl *stl) deps(ctx BaseModuleContext, deps Deps) Deps {
@@ -192,6 +188,7 @@
if needsLibAndroidSupport(ctx) {
deps.StaticLibs = append(deps.StaticLibs, "ndk_libandroid_support")
}
+ // TODO: Switch the NDK over to the LLVM unwinder for non-arm32 architectures.
if ctx.Arch().ArchType == android.Arm {
deps.StaticLibs = append(deps.StaticLibs, "ndk_libunwind")
} else {
@@ -231,10 +228,6 @@
// Use Win32 threads in libc++.
"-D_LIBCPP_HAS_THREAD_API_WIN32")
}
- } else {
- if ctx.Arch().ArchType == android.Arm {
- flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,--exclude-libs,libunwind_llvm.a")
- }
}
case "libstdc++":
// Nothing
diff --git a/cc/testing.go b/cc/testing.go
index 903f76c..dc9a59d 100644
--- a/cc/testing.go
+++ b/cc/testing.go
@@ -110,6 +110,16 @@
}
toolchain_library {
+ name: "libunwind",
+ defaults: ["linux_bionic_supported"],
+ vendor_available: true,
+ product_available: true,
+ recovery_available: true,
+ native_bridge_supported: true,
+ src: "",
+ }
+
+ toolchain_library {
name: "libclang_rt.fuzzer-arm-android",
vendor_available: true,
product_available: true,
