slang.cpp revision 8eac0940b8d13f8c4bad50942bf8527d64ccd12c
1#include "slang.hpp" 2 3#include <stdlib.h> /* for getenv */ 4 5#include "libslang.h" 6 7#include "llvm/ADT/Twine.h" /* for class llvm::Twine */ 8 9#include "llvm/Target/TargetSelect.h" /* for function LLVMInitialize[ARM|X86][TargetInfo|Target|AsmPrinter]() */ 10 11#include "llvm/Support/MemoryBuffer.h" /* for class llvm::MemoryBuffer */ 12#include "llvm/Support/ErrorHandling.h" /* for function llvm::install_fatal_error_handler() */ 13#include "llvm/Support/ManagedStatic.h" /* for class llvm::llvm_shutdown */ 14 15#include "clang/Basic/TargetInfo.h" /* for class clang::TargetInfo */ 16#include "clang/Basic/LangOptions.h" /* for class clang::LangOptions */ 17#include "clang/Basic/TargetOptions.h" /* for class clang::TargetOptions */ 18 19#include "clang/Frontend/FrontendDiagnostic.h" /* for clang::diag::* */ 20 21#include "clang/Sema/ParseAST.h" /* for function clang::ParseAST() */ 22 23#if defined(__arm__) 24# define DEFAULT_TARGET_TRIPLE_STRING "armv7-none-linux-gnueabi" 25#elif defined(__x86_64__) 26# define DEFAULT_TARGET_TRIPLE_STRING "x86_64-unknown-linux" 27#else 28# define DEFAULT_TARGET_TRIPLE_STRING "i686-unknown-linux" // let's use x86 as default target 29#endif 30 31namespace slang { 32 33bool Slang::GlobalInitialized = false; 34 35/* Language option (define the language feature for compiler such as C99) */ 36LangOptions Slang::LangOpts; 37 38/* Code generation option for the compiler */ 39CodeGenOptions Slang::CodeGenOpts; 40 41const 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"; 42 43/* The named of metadata node that pragma resides (should be synced with bcc.cpp) */ 44const llvm::Twine Slang::PragmaMetadataName = "#pragma"; 45 46void Slang::GlobalInitialization() { 47 if(!GlobalInitialized) { 48 /* We only support x86, x64 and ARM target */ 49 50 /* For ARM */ 51 LLVMInitializeARMTargetInfo(); 52 LLVMInitializeARMTarget(); 53 LLVMInitializeARMAsmPrinter(); 54 55 /* For x86 and x64 */ 56 LLVMInitializeX86TargetInfo(); 57 LLVMInitializeX86Target(); 58 LLVMInitializeX86AsmPrinter(); 59 60 /* Please refer to clang/include/clang/Basic/LangOptions.h for setting up the options */ 61 LangOpts.RTTI = 0; /* turn off the RTTI information support */ 62 LangOpts.NeXTRuntime = 0; /* turn off the NeXT runtime uses */ 63 LangOpts.Bool = 1; /* turn on 'bool', 'true', 'false' keywords. */ 64 65 CodeGenOpts.OptimizationLevel = 3; /* -O3 */ 66 67 GlobalInitialized = true; 68 } 69 70 return; 71} 72 73void Slang::LLVMErrorHandler(void *UserData, const std::string &Message) { 74 Diagnostic* Diags = static_cast<Diagnostic*>(UserData); 75 Diags->Report(clang::diag::err_fe_error_backend) << Message; 76 exit(1); 77} 78 79void Slang::createTarget(const char* Triple, const char* CPU, const char** Features) { 80 if(Triple != NULL) 81 mTargetOpts.Triple = Triple; 82 else 83 mTargetOpts.Triple = DEFAULT_TARGET_TRIPLE_STRING; 84 85 if(CPU != NULL) 86 mTargetOpts.CPU = CPU; 87 88 mTarget.reset(TargetInfo::CreateTargetInfo(*mDiagnostics, mTargetOpts)); 89 90 if(Features != NULL) 91 for(int i=0;Features[i]!=NULL;i++) 92 mTargetOpts.Features.push_back(Features[i]); 93 94 return; 95} 96 97void Slang::createPreprocessor() { 98 HeaderSearch* HS = new HeaderSearch(*mFileMgr); /* Default only search header file in current dir */ 99 100 mPP.reset(new Preprocessor( *mDiagnostics, 101 LangOpts, 102 *mTarget, 103 *mSourceMgr, 104 *HS, 105 NULL, 106 true /* OwnsHeaderSearch */)); 107 /* Initialize the prepocessor */ 108 mPragmas.clear(); 109 mPP->AddPragmaHandler(NULL, new PragmaRecorder(mPragmas)); 110 111 /* Like ApplyHeaderSearchOptions in InitHeaderSearch.cpp */ 112 const char*inclDir = getenv("ANDROID_BUILD_TOP"); 113 if (inclDir) { 114 char *dirPath = new char[strlen(inclDir) + 33]; 115 strcpy(dirPath, inclDir); 116 strcpy(dirPath + strlen(inclDir), "/frameworks/base/libs/rs/scriptc"); 117 118 std::vector<DirectoryLookup> SearchList; 119 if (const DirectoryEntry *DE = mFileMgr->getDirectory(dirPath, dirPath + strlen(dirPath))) { 120 SearchList.push_back(DirectoryLookup(DE, SrcMgr::C_System, false, false)); 121 HS->SetSearchPaths(SearchList, 1, false); 122 } 123 } 124 125 return; 126} 127 128Slang::Slang(const char* Triple, const char* CPU, const char** Features) : 129 mOutputType(SlangCompilerOutput_Default), 130 mAllowRSPrefix(false) 131{ 132 GlobalInitialization(); 133 134 createDiagnostic(); 135 llvm::install_fatal_error_handler(LLVMErrorHandler, mDiagnostics.get()); 136 137 createTarget(Triple, CPU, Features); 138 createFileManager(); 139 createSourceManager(); 140 141 return; 142} 143 144bool Slang::setInputSource(llvm::StringRef inputFile, const char* text, size_t textLength) { 145 mInputFileName = inputFile.str(); 146 147 /* Reset the ID tables if we are reusing the SourceManager */ 148 mSourceMgr->clearIDTables(); 149 150 /* Load the source */ 151 llvm::MemoryBuffer *SB = llvm::MemoryBuffer::getMemBuffer(text, text + textLength); 152 mSourceMgr->createMainFileIDForMemBuffer(SB); 153 154 if(mSourceMgr->getMainFileID().isInvalid()) { 155 mDiagnostics->Report(clang::diag::err_fe_error_reading) << inputFile; 156 return false; 157 } 158 159 return true; 160} 161 162bool Slang::setInputSource(llvm::StringRef inputFile) { 163 mInputFileName = inputFile.str(); 164 165 mSourceMgr->clearIDTables(); 166 167 const FileEntry* File = mFileMgr->getFile(inputFile); 168 if(File) 169 mSourceMgr->createMainFileID(File, SourceLocation()); 170 171 if(mSourceMgr->getMainFileID().isInvalid()) { 172 mDiagnostics->Report(clang::diag::err_fe_error_reading) << inputFile; 173 return false; 174 } 175 176 return true; 177} 178 179void Slang::setOutputType(SlangCompilerOutputTy outputType) { 180 mOutputType = outputType; 181 if( mOutputType != SlangCompilerOutput_Assembly && 182 mOutputType != SlangCompilerOutput_LL && 183 mOutputType != SlangCompilerOutput_Bitcode && 184 mOutputType != SlangCompilerOutput_Nothing && 185 mOutputType != SlangCompilerOutput_Obj) 186 mOutputType = SlangCompilerOutput_Default; 187 return; 188} 189 190static void _mkdir_given_a_file(const char *file) { 191 char buf[256]; 192 char *tmp, *p = NULL; 193 size_t len = strlen(file); 194 195 if (len + 1 <= sizeof(buf)) 196 tmp = buf; 197 else 198 tmp = new char [len + 1]; 199 200 strcpy(tmp, file); 201 202 if (tmp[len - 1] == '/') 203 tmp[len - 1] = 0; 204 205 for (p = tmp + 1; *p; p++) { 206 if (*p == '/') { 207 *p = 0; 208 mkdir(tmp, S_IRWXU); 209 *p = '/'; 210 } 211 } 212 213 if (tmp != buf) 214 delete[] tmp; 215} 216 217bool Slang::setOutput(const char* outputFile) { 218 std::string Error; 219 220 _mkdir_given_a_file(outputFile); 221 222 switch(mOutputType) { 223 case SlangCompilerOutput_Assembly: 224 case SlangCompilerOutput_LL: 225 mOS.reset( new llvm::raw_fd_ostream(outputFile, Error, 0) ); 226 break; 227 228 case SlangCompilerOutput_Nothing: 229 mOS.reset(); 230 break; 231 232 case SlangCompilerOutput_Obj: 233 case SlangCompilerOutput_Bitcode: 234 default: 235 mOS.reset( new llvm::raw_fd_ostream(outputFile, Error, llvm::raw_fd_ostream::F_Binary) ); 236 break; 237 } 238 239 if(!Error.empty()) { 240 mOS.reset(); 241 mDiagnostics->Report(clang::diag::err_fe_error_opening) << outputFile << Error; 242 return false; 243 } 244 245 mOutputFileName = outputFile; 246 247 return true; 248} 249 250int Slang::compile() { 251 if((mDiagnostics->getNumErrors() > 0) || (mOS.get() == NULL)) 252 return mDiagnostics->getNumErrors(); 253 254 /* Here is per-compilation needed initialization */ 255 createPreprocessor(); 256 createASTContext(); 257 createRSContext(); 258 //createBackend(); 259 createRSBackend(); 260 261 /* Inform the diagnostic client we are processing a source file */ 262 mDiagClient->BeginSourceFile(LangOpts, mPP.get()); 263 264 /* The core of the slang compiler */ 265 ParseAST(*mPP, mBackend.get(), *mASTContext); 266 267 /* The compilation ended, clear up */ 268 mBackend.reset(); 269 mASTContext.reset(); 270 mPP.reset(); 271 272 /* Inform the diagnostic client we are done with previous source file */ 273 mDiagClient->EndSourceFile(); 274 275 return mDiagnostics->getNumErrors(); 276} 277 278bool Slang::reflectToJava(const char* outputPackageName) { 279 if(mRSContext.get()) 280 return mRSContext->reflectToJava(outputPackageName, mInputFileName, mOutputFileName); 281 else 282 return false; 283} 284 285bool Slang::reflectToJavaPath(const char* outputPathName) { 286 if(mRSContext.get()) 287 return mRSContext->reflectToJavaPath(outputPathName); 288 else 289 return false; 290} 291 292void Slang::getPragmas(size_t* actualStringCount, size_t maxStringCount, char** strings) { 293 int stringCount = mPragmas.size() * 2; 294 295 if(actualStringCount) 296 *actualStringCount = stringCount; 297 if(stringCount > maxStringCount) 298 stringCount = maxStringCount; 299 if(strings) 300 for(PragmaList::const_iterator it = mPragmas.begin(); 301 stringCount > 0; 302 stringCount-=2, it++) 303 { 304 *strings++ = const_cast<char*>(it->first.c_str()); 305 *strings++ = const_cast<char*>(it->second.c_str()); 306 } 307 308 return; 309} 310 311Slang::~Slang() { 312 llvm::llvm_shutdown(); 313 return; 314} 315 316} /* namespace slang */ 317