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-rw-r--r--clang/lib/Driver/Driver.cpp3
-rw-r--r--clang/lib/Driver/ToolChains/Clang.cpp19
-rw-r--r--clang/lib/Frontend/CMakeLists.txt2
-rw-r--r--clang/lib/Frontend/CompilerInvocation.cpp21
-rw-r--r--clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp379
-rw-r--r--clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp4
6 files changed, 428 insertions, 0 deletions
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 3bda71597e3..925ded71e18 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -285,6 +285,7 @@ phases::ID Driver::getFinalPhase(const DerivedArgList &DAL,
(PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) ||
(PhaseArg = DAL.getLastArg(options::OPT_rewrite_legacy_objc)) ||
(PhaseArg = DAL.getLastArg(options::OPT__migrate)) ||
+ (PhaseArg = DAL.getLastArg(options::OPT_emit_iterface_stubs)) ||
(PhaseArg = DAL.getLastArg(options::OPT__analyze,
options::OPT__analyze_auto)) ||
(PhaseArg = DAL.getLastArg(options::OPT_emit_ast))) {
@@ -3472,6 +3473,8 @@ Action *Driver::ConstructPhaseAction(
return C.MakeAction<CompileJobAction>(Input, types::TY_ModuleFile);
if (Args.hasArg(options::OPT_verify_pch))
return C.MakeAction<VerifyPCHJobAction>(Input, types::TY_Nothing);
+ if (Args.hasArg(options::OPT_emit_iterface_stubs))
+ return C.MakeAction<CompileJobAction>(Input, types::TY_IFS);
return C.MakeAction<CompileJobAction>(Input, types::TY_LLVM_BC);
}
case phases::Backend: {
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 9ec6f7d9a95..82d4da414a6 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -3613,6 +3613,25 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
} else if (JA.getType() == types::TY_LLVM_BC ||
JA.getType() == types::TY_LTO_BC) {
CmdArgs.push_back("-emit-llvm-bc");
+ } else if (JA.getType() == types::TY_IFS) {
+ StringRef StubFormat =
+ llvm::StringSwitch<StringRef>(
+ Args.hasArg(options::OPT_iterface_stub_version_EQ)
+ ? Args.getLastArgValue(options::OPT_iterface_stub_version_EQ)
+ : "")
+ .Case("experimental-yaml-elf-v1", "experimental-yaml-elf-v1")
+ .Case("experimental-tapi-elf-v1", "experimental-tapi-elf-v1")
+ .Default("");
+
+ if (StubFormat.empty())
+ D.Diag(diag::err_drv_invalid_value)
+ << "Must specify a valid interface stub format type using "
+ << "-interface-stub-version=<experimental-tapi-elf-v1 | "
+ "experimental-yaml-elf-v1>";
+
+ CmdArgs.push_back("-emit-interface-stubs");
+ CmdArgs.push_back(
+ Args.MakeArgString(Twine("-interface-stub-version=") + StubFormat));
} else if (JA.getType() == types::TY_PP_Asm) {
CmdArgs.push_back("-S");
} else if (JA.getType() == types::TY_AST) {
diff --git a/clang/lib/Frontend/CMakeLists.txt b/clang/lib/Frontend/CMakeLists.txt
index 3bd159537b6..6598017cddd 100644
--- a/clang/lib/Frontend/CMakeLists.txt
+++ b/clang/lib/Frontend/CMakeLists.txt
@@ -45,6 +45,7 @@ add_clang_library(clangFrontend
TextDiagnosticBuffer.cpp
TextDiagnosticPrinter.cpp
VerifyDiagnosticConsumer.cpp
+ InterfaceStubFunctionsConsumer.cpp
DEPENDS
ClangDriverOptions
@@ -54,6 +55,7 @@ add_clang_library(clangFrontend
clangAST
clangBasic
clangDriver
+ clangIndex
clangEdit
clangLex
clangParse
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index fc49aa6f86b..0ec8e11dab2 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -1681,6 +1681,25 @@ static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
Opts.ProgramAction = frontend::GenerateHeaderModule; break;
case OPT_emit_pch:
Opts.ProgramAction = frontend::GeneratePCH; break;
+ case OPT_emit_iterface_stubs: {
+ llvm::Optional<frontend::ActionKind> ProgramAction =
+ llvm::StringSwitch<llvm::Optional<frontend::ActionKind>>(
+ Args.hasArg(OPT_iterface_stub_version_EQ)
+ ? Args.getLastArgValue(OPT_iterface_stub_version_EQ)
+ : "")
+ .Case("experimental-yaml-elf-v1",
+ frontend::GenerateInterfaceYAMLExpV1)
+ .Case("experimental-tapi-elf-v1",
+ frontend::GenerateInterfaceTBEExpV1)
+ .Default(llvm::None);
+ if (!ProgramAction)
+ Diags.Report(diag::err_drv_invalid_value)
+ << "Must specify a valid interface stub format type using "
+ << "-interface-stub-version=<experimental-tapi-elf-v1 | "
+ "experimental-yaml-elf-v1>";
+ Opts.ProgramAction = *ProgramAction;
+ break;
+ }
case OPT_init_only:
Opts.ProgramAction = frontend::InitOnly; break;
case OPT_fsyntax_only:
@@ -3113,6 +3132,8 @@ static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
case frontend::GenerateModuleInterface:
case frontend::GenerateHeaderModule:
case frontend::GeneratePCH:
+ case frontend::GenerateInterfaceYAMLExpV1:
+ case frontend::GenerateInterfaceTBEExpV1:
case frontend::ParseSyntaxOnly:
case frontend::ModuleFileInfo:
case frontend::VerifyPCH:
diff --git a/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp b/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp
new file mode 100644
index 00000000000..4a544963aad
--- /dev/null
+++ b/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp
@@ -0,0 +1,379 @@
+//===--- InterfaceStubFunctionsConsumer.cpp -------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/RecursiveASTVisitor.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/FrontendActions.h"
+#include "clang/Index/CodegenNameGenerator.h"
+#include "clang/Sema/TemplateInstCallback.h"
+#include "llvm/BinaryFormat/ELF.h"
+
+using namespace clang;
+
+class InterfaceStubFunctionsConsumer : public ASTConsumer {
+ CompilerInstance &Instance;
+ StringRef InFile;
+ StringRef Format;
+ std::set<std::string> ParsedTemplates;
+
+ enum RootDeclOrigin { TopLevel = 0, FromTU = 1, IsLate = 2 };
+ struct MangledSymbol {
+ std::string ParentName;
+ uint8_t Type;
+ uint8_t Binding;
+ std::vector<std::string> Names;
+ MangledSymbol() = delete;
+
+ MangledSymbol(const std::string &ParentName, uint8_t Type, uint8_t Binding,
+ std::vector<std::string> Names)
+ : ParentName(ParentName), Type(Type), Binding(Binding), Names(Names) {}
+ };
+ using MangledSymbols = std::map<const NamedDecl *, MangledSymbol>;
+
+ bool WriteNamedDecl(const NamedDecl *ND, MangledSymbols &Symbols, int RDO) {
+ // Here we filter out anything that's not set to DefaultVisibility.
+ // DefaultVisibility is set on a decl when -fvisibility is not specified on
+ // the command line (or specified as default) and the decl does not have
+ // __attribute__((visibility("hidden"))) set or when the command line
+ // argument is set to hidden but the decl explicitly has
+ // __attribute__((visibility ("default"))) set. We do this so that the user
+ // can have fine grain control of what they want to expose in the stub.
+ auto isVisible = [](const NamedDecl *ND) -> bool {
+ return ND->getVisibility() == DefaultVisibility;
+ };
+
+ auto ignoreDecl = [this, isVisible](const NamedDecl *ND) -> bool {
+ if (!isVisible(ND))
+ return true;
+
+ if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
+ if ((VD->getStorageClass() == StorageClass::SC_Extern) ||
+ (VD->getStorageClass() == StorageClass::SC_Static &&
+ VD->getParentFunctionOrMethod() == nullptr))
+ return true;
+
+ if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
+ if (FD->isInlined() && !isa<CXXMethodDecl>(FD) &&
+ !Instance.getLangOpts().GNUInline)
+ return true;
+ if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
+ if (const auto *RC = dyn_cast<CXXRecordDecl>(MD->getParent()))
+ if (isa<ClassTemplateDecl>(RC->getParent()) || !isVisible(RC))
+ return true;
+ if (MD->isDependentContext() || !MD->hasBody())
+ return true;
+ }
+ if (FD->getStorageClass() == StorageClass::SC_Static)
+ return true;
+ }
+ return false;
+ };
+
+ auto getParentFunctionDecl = [](const NamedDecl *ND) -> const NamedDecl * {
+ if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
+ if (const auto *FD =
+ dyn_cast_or_null<FunctionDecl>(VD->getParentFunctionOrMethod()))
+ return FD;
+ return nullptr;
+ };
+
+ auto getMangledNames = [](const NamedDecl *ND) -> std::vector<std::string> {
+ if (!ND)
+ return {""};
+ index::CodegenNameGenerator CGNameGen(ND->getASTContext());
+ std::string MangledName = CGNameGen.getName(ND);
+ std::vector<std::string> MangledNames = CGNameGen.getAllManglings(ND);
+ if (isa<CXXConstructorDecl>(ND) || isa<CXXDestructorDecl>(ND))
+ return MangledNames;
+#ifdef EXPENSIVE_CHECKS
+ assert(MangledNames.size() <= 1 && "Expected only one name mangling.");
+#endif
+ return {MangledName};
+ };
+
+ if (!(RDO & FromTU))
+ return true;
+ if (Symbols.find(ND) != Symbols.end())
+ return true;
+ // - Currently have not figured out how to produce the names for FieldDecls.
+ // - Do not want to produce symbols for function paremeters.
+ if (isa<FieldDecl>(ND) || isa<ParmVarDecl>(ND))
+ return true;
+
+ const NamedDecl *ParentDecl = getParentFunctionDecl(ND);
+ if ((ParentDecl && ignoreDecl(ParentDecl)) || ignoreDecl(ND))
+ return true;
+
+ if (RDO & IsLate) {
+ Instance.getDiagnostics().Report(diag::err_asm_invalid_type_in_input)
+ << "Generating Interface Stubs is not supported with "
+ "delayed template parsing.";
+ } else {
+ if (const auto *FD = dyn_cast<FunctionDecl>(ND))
+ if (FD->isDependentContext())
+ return true;
+
+ const bool IsWeak = (ND->hasAttr<WeakAttr>() ||
+ ND->hasAttr<WeakRefAttr>() || ND->isWeakImported());
+
+ Symbols.insert(std::make_pair(
+ ND,
+ MangledSymbol(getMangledNames(ParentDecl).front(),
+ // Type:
+ isa<VarDecl>(ND) ? llvm::ELF::STT_OBJECT
+ : llvm::ELF::STT_FUNC,
+ // Binding:
+ IsWeak ? llvm::ELF::STB_WEAK : llvm::ELF::STB_GLOBAL,
+ getMangledNames(ND))));
+ }
+ return true;
+ }
+
+ void
+ HandleDecls(const llvm::iterator_range<DeclContext::decl_iterator> &Decls,
+ MangledSymbols &Symbols, int RDO) {
+ for (const auto *D : Decls)
+ HandleNamedDecl(dyn_cast<NamedDecl>(D), Symbols, RDO);
+ }
+
+ void HandleTemplateSpecializations(const FunctionTemplateDecl &FTD,
+ MangledSymbols &Symbols, int RDO) {
+ for (const auto *D : FTD.specializations())
+ HandleNamedDecl(dyn_cast<NamedDecl>(D), Symbols, RDO);
+ }
+
+ void HandleTemplateSpecializations(const ClassTemplateDecl &CTD,
+ MangledSymbols &Symbols, int RDO) {
+ for (const auto *D : CTD.specializations())
+ HandleNamedDecl(dyn_cast<NamedDecl>(D), Symbols, RDO);
+ }
+
+ bool HandleNamedDecl(const NamedDecl *ND, MangledSymbols &Symbols, int RDO) {
+ if (!ND)
+ return false;
+
+ switch (ND->getKind()) {
+ default:
+ break;
+ case Decl::Kind::Namespace:
+ HandleDecls(cast<NamespaceDecl>(ND)->decls(), Symbols, RDO);
+ return true;
+ case Decl::Kind::CXXRecord:
+ HandleDecls(cast<CXXRecordDecl>(ND)->decls(), Symbols, RDO);
+ return true;
+ case Decl::Kind::ClassTemplateSpecialization:
+ HandleDecls(cast<ClassTemplateSpecializationDecl>(ND)->decls(), Symbols,
+ RDO);
+ return true;
+ case Decl::Kind::ClassTemplate:
+ HandleTemplateSpecializations(*cast<ClassTemplateDecl>(ND), Symbols, RDO);
+ return true;
+ case Decl::Kind::FunctionTemplate:
+ HandleTemplateSpecializations(*cast<FunctionTemplateDecl>(ND), Symbols,
+ RDO);
+ return true;
+ case Decl::Kind::TemplateTypeParm:
+ return true;
+ case Decl::Kind::Var:
+ case Decl::Kind::ParmVar:
+ case Decl::Kind::CXXMethod:
+ case Decl::Kind::CXXConstructor:
+ case Decl::Kind::CXXDestructor:
+ case Decl::Kind::Function:
+ case Decl::Kind::Field:
+ if (WriteNamedDecl(ND, Symbols, RDO))
+ return true;
+ }
+
+ // While interface stubs are in the development stage, it's probably best to
+ // catch anything that's not a VarDecl or Template/FunctionDecl.
+ Instance.getDiagnostics().Report(diag::err_asm_invalid_type_in_input)
+ << "Expected a function or function template decl.";
+ return false;
+ }
+
+public:
+ InterfaceStubFunctionsConsumer(CompilerInstance &Instance, StringRef InFile,
+ StringRef Format)
+ : Instance(Instance), InFile(InFile), Format(Format) {}
+
+ void HandleTranslationUnit(ASTContext &context) override {
+ struct Visitor : public RecursiveASTVisitor<Visitor> {
+ bool VisitNamedDecl(NamedDecl *ND) {
+ if (const auto *FD = dyn_cast<FunctionDecl>(ND))
+ if (FD->isLateTemplateParsed()) {
+ LateParsedDecls.insert(FD);
+ return true;
+ }
+
+ if (const auto *VD = dyn_cast<ValueDecl>(ND)) {
+ ValueDecls.insert(VD);
+ return true;
+ }
+
+ NamedDecls.insert(ND);
+ return true;
+ }
+
+ std::set<const NamedDecl *> LateParsedDecls;
+ std::set<NamedDecl *> NamedDecls;
+ std::set<const ValueDecl *> ValueDecls;
+ } v;
+
+ v.TraverseDecl(context.getTranslationUnitDecl());
+
+ MangledSymbols Symbols;
+ auto OS = Instance.createDefaultOutputFile(/*Binary=*/false, InFile, "ifs");
+ if (!OS)
+ return;
+
+ if (Instance.getLangOpts().DelayedTemplateParsing) {
+ clang::Sema &S = Instance.getSema();
+ for (const auto *FD : v.LateParsedDecls) {
+ clang::LateParsedTemplate &LPT =
+ *S.LateParsedTemplateMap.find(cast<FunctionDecl>(FD))->second;
+ S.LateTemplateParser(S.OpaqueParser, LPT);
+ HandleNamedDecl(FD, Symbols, (FromTU | IsLate));
+ }
+ }
+
+ for (const NamedDecl *ND : v.ValueDecls)
+ HandleNamedDecl(ND, Symbols, FromTU);
+ for (const NamedDecl *ND : v.NamedDecls)
+ HandleNamedDecl(ND, Symbols, FromTU);
+
+ auto writeIfoYaml = [this](const llvm::Triple &T,
+ const MangledSymbols &Symbols,
+ const ASTContext &context, StringRef Format,
+ raw_ostream &OS) -> void {
+ OS << "--- !" << Format << "\n";
+ OS << "FileHeader:\n";
+ OS << " Class: ELFCLASS";
+ OS << (T.isArch64Bit() ? "64" : "32");
+ OS << "\n";
+ OS << " Data: ELFDATA2";
+ OS << (T.isLittleEndian() ? "LSB" : "MSB");
+ OS << "\n";
+ OS << " Type: ET_REL\n";
+ OS << " Machine: "
+ << llvm::StringSwitch<llvm::StringRef>(T.getArchName())
+ .Case("x86_64", "EM_X86_64")
+ .Case("i386", "EM_386")
+ .Case("i686", "EM_386")
+ .Case("aarch64", "EM_AARCH64")
+ .Case("amdgcn", "EM_AMDGPU")
+ .Case("r600", "EM_AMDGPU")
+ .Case("arm", "EM_ARM")
+ .Case("thumb", "EM_ARM")
+ .Case("avr", "EM_AVR")
+ .Case("mips", "EM_MIPS")
+ .Case("mipsel", "EM_MIPS")
+ .Case("mips64", "EM_MIPS")
+ .Case("mips64el", "EM_MIPS")
+ .Case("msp430", "EM_MSP430")
+ .Case("ppc", "EM_PPC")
+ .Case("ppc64", "EM_PPC64")
+ .Case("ppc64le", "EM_PPC64")
+ .Case("x86", T.isOSIAMCU() ? "EM_IAMCU" : "EM_386")
+ .Case("x86_64", "EM_X86_64")
+ .Default("EM_NONE")
+ << "\nSymbols:\n";
+ for (const auto &E : Symbols) {
+ const MangledSymbol &Symbol = E.second;
+ for (auto Name : Symbol.Names) {
+ OS << " - Name: "
+ << (Symbol.ParentName.empty() || Instance.getLangOpts().CPlusPlus
+ ? ""
+ : (Symbol.ParentName + "."))
+ << Name << "\n"
+ << " Type: STT_";
+ switch (Symbol.Type) {
+ default:
+ case llvm::ELF::STT_NOTYPE:
+ OS << "NOTYPE";
+ break;
+ case llvm::ELF::STT_OBJECT:
+ OS << "OBJECT";
+ break;
+ case llvm::ELF::STT_FUNC:
+ OS << "FUNC";
+ break;
+ }
+ OS << "\n Binding: STB_"
+ << ((Symbol.Binding == llvm::ELF::STB_WEAK) ? "WEAK" : "GLOBAL")
+ << "\n";
+ }
+ }
+ OS << "...\n";
+ OS.flush();
+ };
+
+ auto writeIfoElfAbiYaml =
+ [this](const llvm::Triple &T, const MangledSymbols &Symbols,
+ const ASTContext &context, StringRef Format,
+ raw_ostream &OS) -> void {
+ OS << "--- !" << Format << "\n";
+ OS << "TbeVersion: 1.0\n";
+ OS << "Arch: " << T.getArchName() << "\n";
+ OS << "Symbols:\n";
+ for (const auto &E : Symbols) {
+ const MangledSymbol &Symbol = E.second;
+ for (auto Name : Symbol.Names) {
+ OS << " "
+ << (Symbol.ParentName.empty() || Instance.getLangOpts().CPlusPlus
+ ? ""
+ : (Symbol.ParentName + "."))
+ << Name << ": { Type: ";
+ switch (Symbol.Type) {
+ default:
+ llvm_unreachable(
+ "clang -emit-iterface-stubs: Unexpected symbol type.");
+ case llvm::ELF::STT_NOTYPE:
+ OS << "NoType";
+ break;
+ case llvm::ELF::STT_OBJECT: {
+ auto VD = cast<ValueDecl>(E.first)->getType();
+ OS << "Object, Size: "
+ << context.getTypeSizeInChars(VD).getQuantity();
+ break;
+ }
+ case llvm::ELF::STT_FUNC:
+ OS << "Func";
+ break;
+ }
+ if (Symbol.Binding == llvm::ELF::STB_WEAK)
+ OS << ", Weak: true";
+ OS << " }\n";
+ }
+ }
+ OS << "...\n";
+ OS.flush();
+ };
+
+ if (Format == "experimental-yaml-elf-v1")
+ writeIfoYaml(Instance.getTarget().getTriple(), Symbols, context, Format,
+ *OS);
+ else
+ writeIfoElfAbiYaml(Instance.getTarget().getTriple(), Symbols, context,
+ Format, *OS);
+ }
+};
+
+std::unique_ptr<ASTConsumer>
+GenerateInterfaceYAMLExpV1Action::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
+ return llvm::make_unique<InterfaceStubFunctionsConsumer>(
+ CI, InFile, "experimental-yaml-elf-v1");
+}
+
+std::unique_ptr<ASTConsumer>
+GenerateInterfaceTBEExpV1Action::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
+ return llvm::make_unique<InterfaceStubFunctionsConsumer>(
+ CI, InFile, "experimental-tapi-elf-v1");
+}
diff --git a/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp b/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
index b6a20a7bb6c..69e773658c5 100644
--- a/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
+++ b/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
@@ -64,6 +64,10 @@ CreateFrontendBaseAction(CompilerInstance &CI) {
case GenerateHeaderModule:
return llvm::make_unique<GenerateHeaderModuleAction>();
case GeneratePCH: return llvm::make_unique<GeneratePCHAction>();
+ case GenerateInterfaceYAMLExpV1:
+ return llvm::make_unique<GenerateInterfaceYAMLExpV1Action>();
+ case GenerateInterfaceTBEExpV1:
+ return llvm::make_unique<GenerateInterfaceTBEExpV1Action>();
case InitOnly: return llvm::make_unique<InitOnlyAction>();
case ParseSyntaxOnly: return llvm::make_unique<SyntaxOnlyAction>();
case ModuleFileInfo: return llvm::make_unique<DumpModuleInfoAction>();
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