slang.cpp revision 001fb6dddbf1cc794532eeb6a55f7b500eab1abc
1#include "slang.hpp" 2#include "libslang.h" 3 4#include "llvm/ADT/Twine.h" /* for class llvm::Twine */ 5 6#include "llvm/Target/TargetSelect.h" /* for function LLVMInitialize[ARM|X86][TargetInfo|Target|AsmPrinter]() */ 7 8#include "llvm/Support/MemoryBuffer.h" /* for class llvm::MemoryBuffer */ 9#include "llvm/Support/ErrorHandling.h" /* for function llvm::install_fatal_error_handler() */ 10#include "llvm/Support/ManagedStatic.h" /* for class llvm::llvm_shutdown */ 11 12#include "clang/Basic/TargetInfo.h" /* for class clang::TargetInfo */ 13#include "clang/Basic/LangOptions.h" /* for class clang::LangOptions */ 14#include "clang/Basic/TargetOptions.h" /* for class clang::TargetOptions */ 15 16#include "clang/Frontend/FrontendDiagnostic.h" /* for clang::diag::* */ 17 18#include "clang/Sema/ParseAST.h" /* for function clang::ParseAST() */ 19 20#if defined(__arm__) 21# define DEFAULT_TARGET_TRIPLE_STRING "armv7-none-linux-gnueabi" 22#elif defined(__x86_64__) 23# define DEFAULT_TARGET_TRIPLE_STRING "x86_64-unknown-linux" 24#else 25# define DEFAULT_TARGET_TRIPLE_STRING "i686-unknown-linux" // let's use x86 as default target 26#endif 27 28namespace slang { 29 30bool Slang::GlobalInitialized = false; 31 32/* Language option (define the language feature for compiler such as C99) */ 33LangOptions Slang::LangOpts; 34 35/* Code generation option for the compiler */ 36CodeGenOptions Slang::CodeGenOpts; 37 38const std::string Slang::TargetDescription = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n32"; 39 40/* The named of metadata node that pragma resides (should be synced with bcc.cpp) */ 41const llvm::Twine Slang::PragmaMetadataName = "#pragma"; 42 43void Slang::GlobalInitialization() { 44 if(!GlobalInitialized) { 45 /* We only support x86, x64 and ARM target */ 46 47 /* For ARM */ 48 LLVMInitializeARMTargetInfo(); 49 LLVMInitializeARMTarget(); 50 LLVMInitializeARMAsmPrinter(); 51 52 /* For x86 and x64 */ 53 LLVMInitializeX86TargetInfo(); 54 LLVMInitializeX86Target(); 55 LLVMInitializeX86AsmPrinter(); 56 57 /* Please refer to clang/include/clang/Basic/LangOptions.h for setting up the options */ 58 LangOpts.RTTI = 0; /* turn off the RTTI information support */ 59 LangOpts.NeXTRuntime = 0; /* turn off the NeXT runtime uses */ 60 LangOpts.Bool = 1; /* turn on 'bool', 'true', 'false' keywords. */ 61 62 CodeGenOpts.OptimizationLevel = 3; /* -O3 */ 63 64 GlobalInitialized = true; 65 } 66 67 return; 68} 69 70void Slang::LLVMErrorHandler(void *UserData, const std::string &Message) { 71 Diagnostic* Diags = static_cast<Diagnostic*>(UserData); 72 Diags->Report(clang::diag::err_fe_error_backend) << Message; 73 exit(1); 74} 75 76void Slang::createTarget(const char* Triple, const char* CPU, const char** Features) { 77 if(Triple != NULL) 78 mTargetOpts.Triple = Triple; 79 else 80 mTargetOpts.Triple = DEFAULT_TARGET_TRIPLE_STRING; 81 82 if(CPU != NULL) 83 mTargetOpts.CPU = CPU; 84 85 mTarget.reset(TargetInfo::CreateTargetInfo(*mDiagnostics, mTargetOpts)); 86 87 if(Features != NULL) 88 for(int i=0;Features[i]!=NULL;i++) 89 mTargetOpts.Features.push_back(Features[i]); 90 91 return; 92} 93 94Slang::Slang(const char* Triple, const char* CPU, const char** Features) : 95 mOutputType(SlangCompilerOutput_Default) 96{ 97 GlobalInitialization(); 98 99 createDiagnostic(); 100 llvm::install_fatal_error_handler(LLVMErrorHandler, mDiagnostics.get()); 101 102 createTarget(Triple, CPU, Features); 103 createFileManager(); 104 createSourceManager(); 105 106 return; 107} 108 109bool Slang::setInputSource(llvm::StringRef inputFile, const char* text, size_t textLength) { 110 mInputFileName = inputFile.str(); 111 112 /* Reset the ID tables if we are reusing the SourceManager */ 113 mSourceMgr->clearIDTables(); 114 115 /* Load the source */ 116 llvm::MemoryBuffer *SB = llvm::MemoryBuffer::getMemBuffer(text, text + textLength); 117 mSourceMgr->createMainFileIDForMemBuffer(SB); 118 119 if(mSourceMgr->getMainFileID().isInvalid()) { 120 mDiagnostics->Report(clang::diag::err_fe_error_reading) << inputFile; 121 return false; 122 } 123 124 return true; 125} 126 127bool Slang::setInputSource(llvm::StringRef inputFile) { 128 mInputFileName = inputFile.str(); 129 130 mSourceMgr->clearIDTables(); 131 132 const FileEntry* File = mFileMgr->getFile(inputFile); 133 if(File) 134 mSourceMgr->createMainFileID(File, SourceLocation()); 135 136 if(mSourceMgr->getMainFileID().isInvalid()) { 137 mDiagnostics->Report(clang::diag::err_fe_error_reading) << inputFile; 138 return false; 139 } 140 141 return true; 142} 143 144void Slang::setOutputType(SlangCompilerOutputTy outputType) { 145 mOutputType = outputType; 146 if( mOutputType != SlangCompilerOutput_Assembly && 147 mOutputType != SlangCompilerOutput_LL && 148 mOutputType != SlangCompilerOutput_Bitcode && 149 mOutputType != SlangCompilerOutput_Nothing && 150 mOutputType != SlangCompilerOutput_Obj) 151 mOutputType = SlangCompilerOutput_Default; 152 return; 153} 154 155bool Slang::setOutput(const char* outputFile) { 156 std::string Error; 157 158 switch(mOutputType) { 159 case SlangCompilerOutput_Assembly: 160 case SlangCompilerOutput_LL: 161 mOS.reset( new llvm::raw_fd_ostream(outputFile, Error, 0) ); 162 break; 163 164 case SlangCompilerOutput_Nothing: 165 mOS.reset(); 166 break; 167 168 case SlangCompilerOutput_Obj: 169 case SlangCompilerOutput_Bitcode: 170 default: 171 mOS.reset( new llvm::raw_fd_ostream(outputFile, Error, llvm::raw_fd_ostream::F_Binary) ); 172 break; 173 } 174 175 if(!Error.empty()) { 176 mOS.reset(); 177 mDiagnostics->Report(clang::diag::err_fe_error_opening) << outputFile << Error; 178 return false; 179 } 180 181 mOutputFileName = outputFile; 182 183 return true; 184} 185 186int Slang::compile() { 187 if((mDiagnostics->getNumErrors() > 0) || (mOS.get() == NULL)) 188 return mDiagnostics->getNumErrors(); 189 190 /* Here is per-compilation needed initialization */ 191 createPreprocessor(); 192 createASTContext(); 193 createRSContext(); 194 //createBackend(); 195 createRSBackend(); 196 197 /* Inform the diagnostic client we are processing a source file */ 198 mDiagClient->BeginSourceFile(LangOpts, mPP.get()); 199 200 /* The core of the slang compiler */ 201 ParseAST(*mPP, mBackend.get(), *mASTContext); 202 203 /* The compilation ended, clear up */ 204 mBackend.reset(); 205 mASTContext.reset(); 206 mPP.reset(); 207 208 /* Inform the diagnostic client we are done with previous source file */ 209 mDiagClient->EndSourceFile(); 210 211 return mDiagnostics->getNumErrors(); 212} 213 214bool Slang::reflectToJava(const char* outputPackageName) { 215 if(mRSContext.get()) 216 return mRSContext->reflectToJava(outputPackageName, mInputFileName, mOutputFileName); 217 else 218 return false; 219} 220 221void Slang::getPragmas(size_t* actualStringCount, size_t maxStringCount, char** strings) { 222 int stringCount = mPragmas.size() * 2; 223 224 if(actualStringCount) 225 *actualStringCount = stringCount; 226 if(stringCount > maxStringCount) 227 stringCount = maxStringCount; 228 if(strings) 229 for(PragmaList::const_iterator it = mPragmas.begin(); 230 stringCount > 0; 231 stringCount-=2, it++) 232 { 233 *strings++ = const_cast<char*>(it->first.c_str()); 234 *strings++ = const_cast<char*>(it->second.c_str()); 235 } 236 237 return; 238} 239 240Slang::~Slang() { 241 llvm::llvm_shutdown(); 242 return; 243} 244 245} /* namespace slang */ 246 247