1 //===-- BitReader.cpp -----------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm-c/BitReader.h" 11 #include "llvm/Bitcode/ReaderWriter.h" 12 #include "llvm/IR/LLVMContext.h" 13 #include "llvm/IR/Module.h" 14 #include "llvm/Support/MemoryBuffer.h" 15 #include <cstring> 16 #include <string> 17 18 using namespace llvm; 19 20 /* Builds a module from the bitcode in the specified memory buffer, returning a 21 reference to the module via the OutModule parameter. Returns 0 on success. 22 Optionally returns a human-readable error message via OutMessage. */ 23 LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf, 24 LLVMModuleRef *OutModule, char **OutMessage) { 25 return LLVMParseBitcodeInContext(wrap(&getGlobalContext()), MemBuf, OutModule, 26 OutMessage); 27 } 28 29 LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef, 30 LLVMMemoryBufferRef MemBuf, 31 LLVMModuleRef *OutModule, 32 char **OutMessage) { 33 std::string Message; 34 35 *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), *unwrap(ContextRef), 36 &Message)); 37 if (!*OutModule) { 38 if (OutMessage) 39 *OutMessage = strdup(Message.c_str()); 40 return 1; 41 } 42 43 return 0; 44 } 45 46 /* Reads a module from the specified path, returning via the OutModule parameter 47 a module provider which performs lazy deserialization. Returns 0 on success. 48 Optionally returns a human-readable error message via OutMessage. */ 49 LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef, 50 LLVMMemoryBufferRef MemBuf, 51 LLVMModuleRef *OutM, 52 char **OutMessage) { 53 std::string Message; 54 55 *OutM = wrap(getLazyBitcodeModule(unwrap(MemBuf), *unwrap(ContextRef), 56 &Message)); 57 if (!*OutM) { 58 if (OutMessage) 59 *OutMessage = strdup(Message.c_str()); 60 return 1; 61 } 62 63 return 0; 64 65 } 66 67 LLVMBool LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM, 68 char **OutMessage) { 69 return LLVMGetBitcodeModuleInContext(LLVMGetGlobalContext(), MemBuf, OutM, 70 OutMessage); 71 } 72 73 /* Deprecated: Use LLVMGetBitcodeModuleInContext instead. */ 74 LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef, 75 LLVMMemoryBufferRef MemBuf, 76 LLVMModuleProviderRef *OutMP, 77 char **OutMessage) { 78 return LLVMGetBitcodeModuleInContext(ContextRef, MemBuf, 79 reinterpret_cast<LLVMModuleRef*>(OutMP), 80 OutMessage); 81 } 82 83 /* Deprecated: Use LLVMGetBitcodeModule instead. */ 84 LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf, 85 LLVMModuleProviderRef *OutMP, 86 char **OutMessage) { 87 return LLVMGetBitcodeModuleProviderInContext(LLVMGetGlobalContext(), MemBuf, 88 OutMP, OutMessage); 89 } 90
