Merge changes I75b4a761,I779f28c6,If1422372,I26307dd1

* changes:
  Introduce inject_bssl_hash library property.
  BoringSSL FIPS build - introduce extraLibFlags and use for STL libs.
  Allow linker scripts when building objects.
  Allow .o files as srcs.

Android.bp

@@ -204,6 +204,7 @@ bootstrap_go_package {
         "cc/gen_test.go",
         "cc/genrule_test.go",
         "cc/library_test.go",
+        "cc/object_test.go",
         "cc/prebuilt_test.go",
         "cc/proto_test.go",
         "cc/test_data_test.go",

android/paths.go

@@ -989,6 +989,10 @@ type ModuleOutPath struct {
 
 var _ Path = ModuleOutPath{}
 
+func (p ModuleOutPath) objPathWithExt(ctx ModuleContext, subdir, ext string) ModuleObjPath {
+	return PathForModuleObj(ctx, subdir, pathtools.ReplaceExtension(p.path, ext))
+}
+
 func pathForModule(ctx ModuleContext) OutputPath {
 	return PathForOutput(ctx, ".intermediates", ctx.ModuleDir(), ctx.ModuleName(), ctx.ModuleSubDir())
 }

cc/builder.go

@@ -65,14 +65,14 @@ var (
 	ld = pctx.AndroidStaticRule("ld",
 		blueprint.RuleParams{
 			Command: "$ldCmd ${crtBegin} @${out}.rsp " +
-				"${libFlags} ${crtEnd} -o ${out} ${ldFlags}",
+				"${libFlags} ${crtEnd} -o ${out} ${ldFlags} ${extraLibFlags}",
 			CommandDeps:    []string{"$ldCmd"},
 			Rspfile:        "${out}.rsp",
 			RspfileContent: "${in}",
 			// clang -Wl,--out-implib doesn't update its output file if it hasn't changed.
 			Restat: true,
 		},
-		"ldCmd", "crtBegin", "libFlags", "crtEnd", "ldFlags")
+		"ldCmd", "crtBegin", "libFlags", "crtEnd", "ldFlags", "extraLibFlags")
 
 	partialLd = pctx.AndroidStaticRule("partialLd",
 		blueprint.RuleParams{
@@ -259,6 +259,7 @@ type builderFlags struct {
 	cppFlags        string
 	ldFlags         string
 	libFlags        string
+	extraLibFlags   string
 	tidyFlags       string
 	sAbiFlags       string
 	yasmFlags       string
@@ -411,6 +412,9 @@ func TransformSourceToObj(ctx android.ModuleContext, subdir string, srcFiles and
 				},
 			})
 			continue
+		case ".o":
+			objFiles[i] = srcFile
+			continue
 		}
 
 		var moduleCflags string
@@ -627,11 +631,12 @@ func TransformObjToDynamicBinary(ctx android.ModuleContext,
 		Inputs:          objFiles,
 		Implicits:       deps,
 		Args: map[string]string{
-			"ldCmd":    ldCmd,
-			"crtBegin": crtBegin.String(),
-			"libFlags": strings.Join(libFlagsList, " "),
-			"ldFlags":  flags.ldFlags,
-			"crtEnd":   crtEnd.String(),
+			"ldCmd":         ldCmd,
+			"crtBegin":      crtBegin.String(),
+			"libFlags":      strings.Join(libFlagsList, " "),
+			"extraLibFlags": flags.extraLibFlags,
+			"ldFlags":       flags.ldFlags,
+			"crtEnd":        crtEnd.String(),
 		},
 	})
 }

cc/cc.go

@@ -153,6 +153,7 @@ type Flags struct {
 	rsFlags         []string // Flags that apply to renderscript source files
 	LdFlags         []string // Flags that apply to linker command lines
 	libFlags        []string // Flags to add libraries early to the link order
+	extraLibFlags   []string // Flags to add libraries late in the link order after LdFlags
 	TidyFlags       []string // Flags that apply to clang-tidy
 	SAbiFlags       []string // Flags that apply to header-abi-dumper
 	YasmFlags       []string // Flags that apply to yasm assembly source files
@@ -182,17 +183,6 @@ type Flags struct {
 	Yacc *YaccProperties
 }
 
-type ObjectLinkerProperties struct {
-	// list of modules that should only provide headers for this module.
-	Header_libs []string `android:"arch_variant,variant_prepend"`
-
-	// names of other cc_object modules to link into this module using partial linking
-	Objs []string `android:"arch_variant"`
-
-	// if set, add an extra objcopy --prefix-symbols= step
-	Prefix_symbols *string
-}
-
 // Properties used to compile all C or C++ modules
 type BaseProperties struct {
 	// Deprecated. true is the default, false is invalid.

cc/cc_test.go

@@ -2203,7 +2203,7 @@ func TestStaticExecutable(t *testing.T) {
 	ctx := testCc(t, `
 		cc_binary {
 			name: "static_test",
-			srcs: ["foo.c"],
+			srcs: ["foo.c", "baz.o"],
 			static_executable: true,
 		}`)
 

cc/library.go

@@ -113,6 +113,9 @@ type LibraryProperties struct {
 
 	// Order symbols in .bss section by their sizes.  Only useful for shared libraries.
 	Sort_bss_symbols_by_size *bool
+
+	// Inject boringssl hash into the shared library.  This is only intended for use by external/boringssl.
+	Inject_bssl_hash *bool `android:"arch_variant"`
 }
 
 type LibraryMutatedProperties struct {
@@ -766,9 +769,21 @@ func (library *libraryDecorator) linkShared(ctx ModuleContext,
 		outputFile = android.PathForModuleOut(ctx, "unstripped", fileName)
 		library.stripper.stripExecutableOrSharedLib(ctx, outputFile, strippedOutputFile, builderFlags)
 	}
-
 	library.unstrippedOutputFile = outputFile
 
+	// TODO(b/137267623): Remove this in favor of a cc_genrule when they support operating on shared libraries.
+	if Bool(library.Properties.Inject_bssl_hash) {
+		hashedOutputfile := outputFile
+		outputFile = android.PathForModuleOut(ctx, "unhashed", fileName)
+
+		rule := android.NewRuleBuilder()
+		rule.Command().
+			BuiltTool(ctx, "bssl_inject_hash").
+			FlagWithInput("-in-object ", outputFile).
+			FlagWithOutput("-o ", hashedOutputfile)
+		rule.Build(pctx, ctx, "injectCryptoHash", "inject crypto hash")
+	}
+
 	if Bool(library.baseLinker.Properties.Use_version_lib) {
 		if ctx.Host() {
 			versionedOutputFile := outputFile

cc/library_test.go

@@ -24,23 +24,26 @@ func TestLibraryReuse(t *testing.T) {
 		ctx := testCc(t, `
 		cc_library {
 			name: "libfoo",
-			srcs: ["foo.c"],
+			srcs: ["foo.c", "baz.o"],
 		}`)
 
 		libfooShared := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_core_shared").Rule("ld")
 		libfooStatic := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_core_static").Output("libfoo.a")
 
-		if len(libfooShared.Inputs) != 1 {
+		if len(libfooShared.Inputs) != 2 {
 			t.Fatalf("unexpected inputs to libfoo shared: %#v", libfooShared.Inputs.Strings())
 		}
 
-		if len(libfooStatic.Inputs) != 1 {
+		if len(libfooStatic.Inputs) != 2 {
 			t.Fatalf("unexpected inputs to libfoo static: %#v", libfooStatic.Inputs.Strings())
 		}
 
 		if libfooShared.Inputs[0] != libfooStatic.Inputs[0] {
 			t.Errorf("static object not reused for shared library")
 		}
+		if libfooShared.Inputs[1] != libfooStatic.Inputs[1] {
+			t.Errorf("static object not reused for shared library")
+		}
 	})
 
 	t.Run("extra static source", func(t *testing.T) {

cc/object.go

@@ -33,6 +33,20 @@ type objectLinker struct {
 	Properties ObjectLinkerProperties
 }
 
+type ObjectLinkerProperties struct {
+	// list of modules that should only provide headers for this module.
+	Header_libs []string `android:"arch_variant,variant_prepend"`
+
+	// names of other cc_object modules to link into this module using partial linking
+	Objs []string `android:"arch_variant"`
+
+	// if set, add an extra objcopy --prefix-symbols= step
+	Prefix_symbols *string
+
+	// if set, the path to a linker script to pass to ld -r when combining multiple object files.
+	Linker_script *string `android:"path,arch_variant"`
+}
+
 // cc_object runs the compiler without running the linker. It is rarely
 // necessary, but sometimes used to generate .s files from .c files to use as
 // input to a cc_genrule module.
@@ -71,9 +85,13 @@ func (object *objectLinker) linkerDeps(ctx DepsContext, deps Deps) Deps {
 	return deps
 }
 
-func (*objectLinker) linkerFlags(ctx ModuleContext, flags Flags) Flags {
+func (object *objectLinker) linkerFlags(ctx ModuleContext, flags Flags) Flags {
 	flags.LdFlags = append(flags.LdFlags, ctx.toolchain().ToolchainClangLdflags())
 
+	if lds := android.OptionalPathForModuleSrc(ctx, object.Properties.Linker_script); lds.Valid() {
+		flags.LdFlags = append(flags.LdFlags, "-Wl,-T,"+lds.String())
+		flags.LdFlagsDeps = append(flags.LdFlagsDeps, lds.Path())
+	}
 	return flags
 }
 

cc/object_test.go

@@ -0,0 +1,31 @@
+// Copyright 2019 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 cc
+
+import (
+	"testing"
+)
+
+func TestLinkerScript(t *testing.T) {
+	t.Run("script", func(t *testing.T) {
+		testCc(t, `
+		cc_object {
+			name: "foo",
+			srcs: ["baz.o"],
+			linker_script: "foo.lds",
+		}`)
+	})
+
+}

cc/stl.go

@@ -223,11 +223,11 @@ func (stl *stl) flags(ctx ModuleContext, flags Flags) Flags {
 
 		if !ctx.toolchain().Bionic() {
 			flags.CppFlags = append(flags.CppFlags, "-nostdinc++")
-			flags.LdFlags = append(flags.LdFlags, "-nodefaultlibs")
+			flags.extraLibFlags = append(flags.extraLibFlags, "-nodefaultlibs")
 			if ctx.staticBinary() {
-				flags.LdFlags = append(flags.LdFlags, hostStaticGccLibs[ctx.Os()]...)
+				flags.extraLibFlags = append(flags.extraLibFlags, hostStaticGccLibs[ctx.Os()]...)
 			} else {
-				flags.LdFlags = append(flags.LdFlags, hostDynamicGccLibs[ctx.Os()]...)
+				flags.extraLibFlags = append(flags.extraLibFlags, hostDynamicGccLibs[ctx.Os()]...)
 			}
 			if ctx.Windows() {
 				// Use SjLj exceptions for 32-bit.  libgcc_eh implements SjLj
@@ -262,11 +262,11 @@ func (stl *stl) flags(ctx ModuleContext, flags Flags) Flags {
 		// None or error.
 		if !ctx.toolchain().Bionic() {
 			flags.CppFlags = append(flags.CppFlags, "-nostdinc++")
-			flags.LdFlags = append(flags.LdFlags, "-nodefaultlibs")
+			flags.extraLibFlags = append(flags.extraLibFlags, "-nodefaultlibs")
 			if ctx.staticBinary() {
-				flags.LdFlags = append(flags.LdFlags, hostStaticGccLibs[ctx.Os()]...)
+				flags.extraLibFlags = append(flags.extraLibFlags, hostStaticGccLibs[ctx.Os()]...)
 			} else {
-				flags.LdFlags = append(flags.LdFlags, hostDynamicGccLibs[ctx.Os()]...)
+				flags.extraLibFlags = append(flags.extraLibFlags, hostDynamicGccLibs[ctx.Os()]...)
 			}
 		}
 	default:

cc/testing.go

@@ -272,7 +272,9 @@ func CreateTestContext(bp string, fs map[string][]byte,
 	mockFS := map[string][]byte{
 		"Android.bp":  []byte(bp),
 		"foo.c":       nil,
+		"foo.lds":     nil,
 		"bar.c":       nil,
+		"baz.o":       nil,
 		"a.proto":     nil,
 		"b.aidl":      nil,
 		"sub/c.aidl":  nil,

cc/util.go

@@ -67,6 +67,7 @@ func flagsToBuilderFlags(in Flags) builderFlags {
 		rsFlags:         strings.Join(in.rsFlags, " "),
 		ldFlags:         strings.Join(in.LdFlags, " "),
 		libFlags:        strings.Join(in.libFlags, " "),
+		extraLibFlags:   strings.Join(in.extraLibFlags, " "),
 		tidyFlags:       strings.Join(in.TidyFlags, " "),
 		sAbiFlags:       strings.Join(in.SAbiFlags, " "),
 		yasmFlags:       strings.Join(in.YasmFlags, " "),