/* * Copyright 2010-2012, 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. */ #include "slang_rs_context.h" #include <string> #include "clang/AST/ASTContext.h" #include "clang/AST/Decl.h" #include "clang/AST/DeclBase.h" #include "clang/AST/Mangle.h" #include "clang/AST/Type.h" #include "clang/Basic/Linkage.h" #include "clang/Basic/TargetInfo.h" #include "llvm/IR/LLVMContext.h" #include "llvm/IR/DataLayout.h" #include "slang.h" #include "slang_assert.h" #include "slang_rs_export_foreach.h" #include "slang_rs_export_func.h" #include "slang_rs_export_type.h" #include "slang_rs_export_var.h" #include "slang_rs_exportable.h" #include "slang_rs_pragma_handler.h" #include "slang_rs_reflection.h" namespace slang { RSContext::RSContext(clang::Preprocessor &PP, clang::ASTContext &Ctx, const clang::TargetInfo &Target, PragmaList *Pragmas, unsigned int TargetAPI, std::vector<std::string> *GeneratedFileNames) : mPP(PP), mCtx(Ctx), mTarget(Target), mPragmas(Pragmas), mTargetAPI(TargetAPI), mGeneratedFileNames(GeneratedFileNames), mDataLayout(NULL), mLLVMContext(llvm::getGlobalContext()), mLicenseNote(NULL), mRSPackageName("android.renderscript"), version(0), mIsCompatLib(false), mMangleCtx(Ctx.createMangleContext()) { slangAssert(mGeneratedFileNames && "Must supply GeneratedFileNames"); // For #pragma rs export_type PP.AddPragmaHandler( "rs", RSPragmaHandler::CreatePragmaExportTypeHandler(this)); // For #pragma rs java_package_name PP.AddPragmaHandler( "rs", RSPragmaHandler::CreatePragmaJavaPackageNameHandler(this)); // For #pragma rs set_reflect_license PP.AddPragmaHandler( "rs", RSPragmaHandler::CreatePragmaReflectLicenseHandler(this)); // For #pragma version PP.AddPragmaHandler(RSPragmaHandler::CreatePragmaVersionHandler(this)); // Prepare target data mDataLayout = new llvm::DataLayout(Target.getTargetDescription()); return; } bool RSContext::processExportVar(const clang::VarDecl *VD) { slangAssert(!VD->getName().empty() && "Variable name should not be empty"); // TODO(zonr): some check on variable RSExportType *ET = RSExportType::CreateFromDecl(this, VD); if (!ET) return false; RSExportVar *EV = new RSExportVar(this, VD, ET); if (EV == NULL) return false; else mExportVars.push_back(EV); return true; } bool RSContext::processExportFunc(const clang::FunctionDecl *FD) { slangAssert(!FD->getName().empty() && "Function name should not be empty"); if (!FD->isThisDeclarationADefinition()) { return true; } if (FD->getStorageClass() != clang::SC_None) { fprintf(stderr, "RSContext::processExportFunc : cannot export extern or " "static function '%s'\n", FD->getName().str().c_str()); return false; } clang::DiagnosticsEngine *DiagEngine = getDiagnostics(); if (RSExportForEach::isSpecialRSFunc(mTargetAPI, FD)) { // Do not reflect specialized functions like init, dtor, or graphics root. return RSExportForEach::validateSpecialFuncDecl(mTargetAPI, DiagEngine, FD); } else if (RSExportForEach::isRSForEachFunc(mTargetAPI, DiagEngine, FD)) { RSExportForEach *EFE = RSExportForEach::Create(this, FD); if (EFE == NULL) return false; else mExportForEach.push_back(EFE); return true; } RSExportFunc *EF = RSExportFunc::Create(this, FD); if (EF == NULL) return false; else mExportFuncs.push_back(EF); return true; } bool RSContext::processExportType(const llvm::StringRef &Name) { clang::TranslationUnitDecl *TUDecl = mCtx.getTranslationUnitDecl(); slangAssert(TUDecl != NULL && "Translation unit declaration (top-level " "declaration) is null object"); const clang::IdentifierInfo *II = mPP.getIdentifierInfo(Name); if (II == NULL) // TODO(zonr): alert identifier @Name mark as an exportable type cannot be // found return false; clang::DeclContext::lookup_const_result R = TUDecl->lookup(II); RSExportType *ET = NULL; for (clang::DeclContext::lookup_const_iterator I = R.begin(), E = R.end(); I != E; I++) { clang::NamedDecl *const ND = *I; const clang::Type *T = NULL; switch (ND->getKind()) { case clang::Decl::Typedef: { T = static_cast<const clang::TypedefDecl*>( ND)->getCanonicalDecl()->getUnderlyingType().getTypePtr(); break; } case clang::Decl::Record: { T = static_cast<const clang::RecordDecl*>(ND)->getTypeForDecl(); break; } default: { // unsupported, skip break; } } if (T != NULL) ET = RSExportType::Create(this, T); } return (ET != NULL); } // Possibly re-order ForEach exports (maybe generating a dummy "root" function). // We require "root" to be listed as slot 0 of our exported compute kernels, // so this only needs to be created if we have other non-root kernels. void RSContext::cleanupForEach() { bool foundNonRoot = false; ExportForEachList::iterator begin = mExportForEach.begin(); for (ExportForEachList::iterator I = begin, E = mExportForEach.end(); I != E; I++) { RSExportForEach *EFE = *I; if (!EFE->getName().compare("root")) { if (I == begin) { // Nothing to do, since it is the first function return; } mExportForEach.erase(I); mExportForEach.push_front(EFE); return; } else { foundNonRoot = true; } } // If we found a non-root kernel, but no root() function, we need to add a // dummy version (so that script->script calls of rsForEach don't behave // erratically). if (foundNonRoot) { RSExportForEach *DummyRoot = RSExportForEach::CreateDummyRoot(this); mExportForEach.push_front(DummyRoot); } } bool RSContext::processExport() { bool valid = true; if (getDiagnostics()->hasErrorOccurred()) { return false; } // Export variable clang::TranslationUnitDecl *TUDecl = mCtx.getTranslationUnitDecl(); for (clang::DeclContext::decl_iterator DI = TUDecl->decls_begin(), DE = TUDecl->decls_end(); DI != DE; DI++) { if (DI->getKind() == clang::Decl::Var) { clang::VarDecl *VD = (clang::VarDecl*) (*DI); if (VD->getFormalLinkage() == clang::ExternalLinkage) { if (!processExportVar(VD)) { valid = false; } } } else if (DI->getKind() == clang::Decl::Function) { // Export functions clang::FunctionDecl *FD = (clang::FunctionDecl*) (*DI); if (FD->getFormalLinkage() == clang::ExternalLinkage) { if (!processExportFunc(FD)) { valid = false; } } } } if (valid) { cleanupForEach(); } // Finally, export type forcely set to be exported by user for (NeedExportTypeSet::const_iterator EI = mNeedExportTypes.begin(), EE = mNeedExportTypes.end(); EI != EE; EI++) { if (!processExportType(EI->getKey())) { valid = false; } } return valid; } bool RSContext::insertExportType(const llvm::StringRef &TypeName, RSExportType *ET) { ExportTypeMap::value_type *NewItem = ExportTypeMap::value_type::Create(TypeName.begin(), TypeName.end(), mExportTypes.getAllocator(), ET); if (mExportTypes.insert(NewItem)) { return true; } else { free(NewItem); return false; } } bool RSContext::reflectToJava(const std::string &OutputPathBase, const std::string &RSPackageName, const std::string &InputFileName, const std::string &OutputBCFileName) { if (!RSPackageName.empty()) { mRSPackageName = RSPackageName; } // If we are not targeting the actual Android Renderscript classes, // we should reflect code that works with the compatibility library. if (mRSPackageName.compare("android.renderscript") != 0) { mIsCompatLib = true; } RSReflection *R = new RSReflection(this, mGeneratedFileNames); bool ret = R->reflect(OutputPathBase, mReflectJavaPackageName, mRSPackageName, InputFileName, OutputBCFileName); if (!ret) fprintf(stderr, "RSContext::reflectToJava : failed to do reflection " "(%s)\n", R->getLastError()); delete R; return ret; } RSContext::~RSContext() { delete mLicenseNote; delete mDataLayout; for (ExportableList::iterator I = mExportables.begin(), E = mExportables.end(); I != E; I++) { if (!(*I)->isKeep()) delete *I; } } } // namespace slang