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// Copyright 2020 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 rust
import (
"android/soong/android"
"github.com/google/blueprint"
"android/soong/cc"
)
var ProfilerBuiltins = "libprofiler_builtins.rust_sysroot"
// Add '%c' to default specifier after we resolve http://b/210012154
const profileInstrFlag = "-fprofile-instr-generate=/data/misc/trace/clang-%p-%m.profraw"
type coverage struct {
Properties cc.CoverageProperties
// Whether binaries containing this module need --coverage added to their ldflags
linkCoverage bool
}
func (cov *coverage) props() []interface{} {
return []interface{}{&cov.Properties}
}
func getClangProfileLibraryName(ctx ModuleContextIntf) string {
if ctx.RustModule().UseSdk() {
return "libprofile-clang-extras_ndk"
} else {
return "libprofile-clang-extras"
}
}
func (cov *coverage) deps(ctx DepsContext, deps Deps) Deps {
if cov.Properties.NeedCoverageVariant {
if ctx.Device() {
ctx.AddVariationDependencies([]blueprint.Variation{
{Mutator: "link", Variation: "static"},
}, cc.CoverageDepTag, getClangProfileLibraryName(ctx))
}
// no_std modules are missing libprofiler_builtins which provides coverage, so we need to add it as a dependency.
if rustModule, ok := ctx.Module().(*Module); ok && rustModule.compiler.noStdlibs() {
ctx.AddVariationDependencies([]blueprint.Variation{{Mutator: "rust_libraries", Variation: "rlib"}}, rlibDepTag, ProfilerBuiltins)
}
}
return deps
}
func (cov *coverage) flags(ctx ModuleContext, flags Flags, deps PathDeps) (Flags, PathDeps) {
if !ctx.DeviceConfig().NativeCoverageEnabled() {
return flags, deps
}
if cov.Properties.CoverageEnabled {
flags.Coverage = true
flags.RustFlags = append(flags.RustFlags,
"-C instrument-coverage", "-g")
if ctx.Device() {
m := ctx.GetDirectDepProxyWithTag(getClangProfileLibraryName(ctx), cc.CoverageDepTag)
coverage := android.OtherModuleProviderOrDefault(ctx, m, cc.LinkableInfoProvider)
flags.LinkFlags = append(flags.LinkFlags,
profileInstrFlag, "-g", coverage.OutputFile.Path().String(), "-Wl,--wrap,open")
deps.StaticLibs = append(deps.StaticLibs, coverage.OutputFile.Path())
}
// no_std modules are missing libprofiler_builtins which provides coverage, so we need to add it as a dependency.
if rustModule, ok := ctx.Module().(*Module); ok && rustModule.compiler.noStdlibs() {
m := ctx.GetDirectDepProxyWithTag(ProfilerBuiltins, rlibDepTag)
profiler_builtins := android.OtherModuleProviderOrDefault(ctx, m, cc.LinkableInfoProvider)
deps.RLibs = append(deps.RLibs, RustLibrary{Path: profiler_builtins.OutputFile.Path(), CrateName: profiler_builtins.CrateName})
}
if cc.EnableContinuousCoverage(ctx) {
flags.RustFlags = append(flags.RustFlags, "-C llvm-args=--runtime-counter-relocation")
flags.LinkFlags = append(flags.LinkFlags, "-Wl,-mllvm,-runtime-counter-relocation")
}
}
return flags, deps
}
func (cov *coverage) begin(ctx BaseModuleContext) {
// Update useSdk and sdkVersion args if Rust modules become SDK aware.
cov.Properties = cc.SetCoverageProperties(ctx, cov.Properties, ctx.RustModule().nativeCoverage(), false, "")
}
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