1 /* 2 * Copyright 2012, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef BCC_RS_COMPILER_DRIVER_H 18 #define BCC_RS_COMPILER_DRIVER_H 19 20 #include "bcc/Compiler.h" 21 #include "bcc/Script.h" 22 23 #include "bcinfo/MetadataExtractor.h" 24 25 #include <list> 26 #include <string> 27 #include <vector> 28 29 namespace bcc { 30 31 class BCCContext; 32 class CompilerConfig; 33 class RSCompilerDriver; 34 class Source; 35 36 // Type signature for dynamically loaded initialization of an RSCompilerDriver. 37 typedef void (*RSCompilerDriverInit_t) (bcc::RSCompilerDriver *); 38 // Name of the function that we attempt to dynamically load/execute. 39 #define RS_COMPILER_DRIVER_INIT_FN rsCompilerDriverInit 40 41 class RSCompilerDriver { 42 private: 43 CompilerConfig *mConfig; 44 Compiler mCompiler; 45 46 // Are we compiling under an RS debug context with additional checks? 47 bool mDebugContext; 48 49 // Callback before linking with the runtime library. 50 RSLinkRuntimeCallback mLinkRuntimeCallback; 51 52 // Do we merge global variables on ARM using LLVM's optimization pass? 53 // Disabling LLVM's global merge pass allows static globals to be correctly 54 // emitted to ELF. This can result in decreased performance due to increased 55 // register pressure, but it does make the resulting code easier to debug 56 // and work with. 57 bool mEnableGlobalMerge; 58 59 // Specifies whether we should embed global variable information in the 60 // code via special RS variables that can be examined later by the driver. 61 bool mEmbedGlobalInfo; 62 63 // Specifies whether we should skip constant (immutable) global variables 64 // when potentially embedding information about globals. 65 bool mEmbedGlobalInfoSkipConstant; 66 67 // Setup the compiler config for the given script. Return true if mConfig has 68 // been changed and false if it remains unchanged. 69 bool setupConfig(const Script &pScript); 70 71 // Compiles the provided bitcode, placing the binary at pOutputPath. 72 // - If pDumpIR is true, a ".ll" file will also be created. 73 Compiler::ErrorCode compileScript(Script& pScript, const char* pScriptName, 74 const char* pOutputPath, 75 const char* pRuntimePath, 76 const char* pBuildChecksum, 77 bool pDumpIR); 78 79 public: 80 RSCompilerDriver(); 81 ~RSCompilerDriver(); 82 83 Compiler *getCompiler() { 84 return &mCompiler; 85 } 86 87 void setConfig(CompilerConfig *config) { 88 mConfig = config; 89 } 90 91 void setDebugContext(bool v) { 92 mDebugContext = v; 93 } 94 95 void setLinkRuntimeCallback(RSLinkRuntimeCallback c) { 96 mLinkRuntimeCallback = c; 97 } 98 99 RSLinkRuntimeCallback getLinkRuntimeCallback() const { 100 return mLinkRuntimeCallback; 101 } 102 103 // This function enables/disables merging of global static variables. 104 // Note that it only takes effect on ARM architectures (other architectures 105 // do not offer this option). 106 void setEnableGlobalMerge(bool v) { 107 mEnableGlobalMerge = v; 108 } 109 110 bool getEnableGlobalMerge() const { 111 return mEnableGlobalMerge; 112 } 113 114 const CompilerConfig * getConfig() const { 115 return mConfig; 116 } 117 118 // Set to true if we should embed global variable information in the code. 119 void setEmbedGlobalInfo(bool v) { 120 mEmbedGlobalInfo = v; 121 } 122 123 // Returns true if we should embed global variable information in the code. 124 bool getEmbedGlobalInfo() const { 125 return mEmbedGlobalInfo; 126 } 127 128 // Set to true if we should skip constant (immutable) global variables when 129 // potentially embedding information about globals. 130 void setEmbedGlobalInfoSkipConstant(bool v) { 131 mEmbedGlobalInfoSkipConstant = v; 132 } 133 134 // Returns true if we should skip constant (immutable) global variables when 135 // potentially embedding information about globals. 136 bool getEmbedGlobalInfoSkipConstant() const { 137 return mEmbedGlobalInfoSkipConstant; 138 } 139 140 // FIXME: This method accompany with loadScript and compileScript should 141 // all be const-methods. They're not now because the getAddress() in 142 // SymbolResolverInterface is not a const-method. 143 // Returns true if script is successfully compiled. 144 bool build(BCCContext& pContext, const char* pCacheDir, const char* pResName, 145 const char* pBitcode, size_t pBitcodeSize, 146 const char *pBuildChecksum, const char* pRuntimePath, 147 RSLinkRuntimeCallback pLinkRuntimeCallback = nullptr, 148 bool pDumpIR = false); 149 150 bool buildScriptGroup( 151 BCCContext& Context, const char* pOutputFilepath, const char* pRuntimePath, 152 const char* pRuntimeRelaxedPath, bool dumpIR, const char* buildChecksum, 153 const std::vector<Source*>& sources, 154 const std::list<std::list<std::pair<int, int>>>& toFuse, 155 const std::list<std::string>& fused, 156 const std::list<std::list<std::pair<int, int>>>& invokes, 157 const std::list<std::string>& invokeBatchNames); 158 159 // Returns true if script is successfully compiled. 160 bool buildForCompatLib(Script &pScript, const char *pOut, 161 const char *pBuildChecksum, const char *pRuntimePath, 162 bool pDumpIR); 163 }; 164 165 } // end namespace bcc 166 167 #endif // BCC_RS_COMPILER_DRIVER_H 168
