slang.cpp revision 68e8e9f98730b3672fb96d49e33b9db70a90ed3f
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"); 113 114 printf("%s\n", inclDir); 115 if (inclDir) { 116 std::vector<DirectoryLookup> SearchList; 117 if (const DirectoryEntry *DE = mFileMgr->getDirectory(inclDir, inclDir + strlen(inclDir))) { 118 SearchList.push_back(DirectoryLookup(DE, SrcMgr::C_System, false, false)); 119 HS->SetSearchPaths(SearchList, 1, false); 120 } 121 } 122 123 return; 124} 125 126Slang::Slang(const char* Triple, const char* CPU, const char** Features) : 127 mOutputType(SlangCompilerOutput_Default), 128 mAllowRSPrefix(false) 129{ 130 GlobalInitialization(); 131 132 createDiagnostic(); 133 llvm::install_fatal_error_handler(LLVMErrorHandler, mDiagnostics.get()); 134 135 createTarget(Triple, CPU, Features); 136 createFileManager(); 137 createSourceManager(); 138 139 return; 140} 141 142bool Slang::setInputSource(llvm::StringRef inputFile, const char* text, size_t textLength) { 143 mInputFileName = inputFile.str(); 144 145 /* Reset the ID tables if we are reusing the SourceManager */ 146 mSourceMgr->clearIDTables(); 147 148 /* Load the source */ 149 llvm::MemoryBuffer *SB = llvm::MemoryBuffer::getMemBuffer(text, text + textLength); 150 mSourceMgr->createMainFileIDForMemBuffer(SB); 151 152 if(mSourceMgr->getMainFileID().isInvalid()) { 153 mDiagnostics->Report(clang::diag::err_fe_error_reading) << inputFile; 154 return false; 155 } 156 157 return true; 158} 159 160bool Slang::setInputSource(llvm::StringRef inputFile) { 161 mInputFileName = inputFile.str(); 162 163 mSourceMgr->clearIDTables(); 164 165 const FileEntry* File = mFileMgr->getFile(inputFile); 166 if(File) 167 mSourceMgr->createMainFileID(File, SourceLocation()); 168 169 if(mSourceMgr->getMainFileID().isInvalid()) { 170 mDiagnostics->Report(clang::diag::err_fe_error_reading) << inputFile; 171 return false; 172 } 173 174 return true; 175} 176 177void Slang::setOutputType(SlangCompilerOutputTy outputType) { 178 mOutputType = outputType; 179 if( mOutputType != SlangCompilerOutput_Assembly && 180 mOutputType != SlangCompilerOutput_LL && 181 mOutputType != SlangCompilerOutput_Bitcode && 182 mOutputType != SlangCompilerOutput_Nothing && 183 mOutputType != SlangCompilerOutput_Obj) 184 mOutputType = SlangCompilerOutput_Default; 185 return; 186} 187 188static void _mkdir_given_a_file(const char *file) { 189 char buf[256]; 190 char *tmp, *p = NULL; 191 size_t len = strlen(file); 192 193 if (len + 1 <= sizeof(buf)) 194 tmp = buf; 195 else 196 tmp = new char [len + 1]; 197 198 strcpy(tmp, file); 199 200 if (tmp[len - 1] == '/') 201 tmp[len - 1] = 0; 202 203 for (p = tmp + 1; *p; p++) { 204 if (*p == '/') { 205 *p = 0; 206 mkdir(tmp, S_IRWXU); 207 *p = '/'; 208 } 209 } 210 211 if (tmp != buf) 212 delete[] tmp; 213} 214 215bool Slang::setOutput(const char* outputFile) { 216 std::string Error; 217 218 _mkdir_given_a_file(outputFile); 219 220 switch(mOutputType) { 221 case SlangCompilerOutput_Assembly: 222 case SlangCompilerOutput_LL: 223 mOS.reset( new llvm::raw_fd_ostream(outputFile, Error, 0) ); 224 break; 225 226 case SlangCompilerOutput_Nothing: 227 mOS.reset(); 228 break; 229 230 case SlangCompilerOutput_Obj: 231 case SlangCompilerOutput_Bitcode: 232 default: 233 mOS.reset( new llvm::raw_fd_ostream(outputFile, Error, llvm::raw_fd_ostream::F_Binary) ); 234 break; 235 } 236 237 if(!Error.empty()) { 238 mOS.reset(); 239 mDiagnostics->Report(clang::diag::err_fe_error_opening) << outputFile << Error; 240 return false; 241 } 242 243 mOutputFileName = outputFile; 244 245 return true; 246} 247 248int Slang::compile() { 249 if((mDiagnostics->getNumErrors() > 0) || (mOS.get() == NULL)) 250 return mDiagnostics->getNumErrors(); 251 252 /* Here is per-compilation needed initialization */ 253 createPreprocessor(); 254 createASTContext(); 255 createRSContext(); 256 //createBackend(); 257 createRSBackend(); 258 259 /* Inform the diagnostic client we are processing a source file */ 260 mDiagClient->BeginSourceFile(LangOpts, mPP.get()); 261 262 /* The core of the slang compiler */ 263 ParseAST(*mPP, mBackend.get(), *mASTContext); 264 265 /* The compilation ended, clear up */ 266 mBackend.reset(); 267 mASTContext.reset(); 268 mPP.reset(); 269 270 /* Inform the diagnostic client we are done with previous source file */ 271 mDiagClient->EndSourceFile(); 272 273 return mDiagnostics->getNumErrors(); 274} 275 276bool Slang::reflectToJava(const char* outputPackageName) { 277 if(mRSContext.get()) 278 return mRSContext->reflectToJava(outputPackageName, mInputFileName, mOutputFileName); 279 else 280 return false; 281} 282 283bool Slang::reflectToJavaPath(const char* outputPathName) { 284 if(mRSContext.get()) 285 return mRSContext->reflectToJavaPath(outputPathName); 286 else 287 return false; 288} 289 290void Slang::getPragmas(size_t* actualStringCount, size_t maxStringCount, char** strings) { 291 int stringCount = mPragmas.size() * 2; 292 293 if(actualStringCount) 294 *actualStringCount = stringCount; 295 if(stringCount > maxStringCount) 296 stringCount = maxStringCount; 297 if(strings) 298 for(PragmaList::const_iterator it = mPragmas.begin(); 299 stringCount > 0; 300 stringCount-=2, it++) 301 { 302 *strings++ = const_cast<char*>(it->first.c_str()); 303 *strings++ = const_cast<char*>(it->second.c_str()); 304 } 305 306 return; 307} 308 309Slang::~Slang() { 310 llvm::llvm_shutdown(); 311 return; 312} 313 314} /* namespace slang */ 315