1 //===- Object.cpp - C bindings to the object file library--------*- C++ -*-===// 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 // This file defines the C bindings to the file-format-independent object 11 // library. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "llvm/ADT/SmallVector.h" 16 #include "llvm-c/Object.h" 17 #include "llvm/Object/ObjectFile.h" 18 19 using namespace llvm; 20 using namespace object; 21 22 inline OwningBinary<ObjectFile> *unwrap(LLVMObjectFileRef OF) { 23 return reinterpret_cast<OwningBinary<ObjectFile> *>(OF); 24 } 25 26 inline LLVMObjectFileRef wrap(const OwningBinary<ObjectFile> *OF) { 27 return reinterpret_cast<LLVMObjectFileRef>( 28 const_cast<OwningBinary<ObjectFile> *>(OF)); 29 } 30 31 inline section_iterator *unwrap(LLVMSectionIteratorRef SI) { 32 return reinterpret_cast<section_iterator*>(SI); 33 } 34 35 inline LLVMSectionIteratorRef 36 wrap(const section_iterator *SI) { 37 return reinterpret_cast<LLVMSectionIteratorRef> 38 (const_cast<section_iterator*>(SI)); 39 } 40 41 inline symbol_iterator *unwrap(LLVMSymbolIteratorRef SI) { 42 return reinterpret_cast<symbol_iterator*>(SI); 43 } 44 45 inline LLVMSymbolIteratorRef 46 wrap(const symbol_iterator *SI) { 47 return reinterpret_cast<LLVMSymbolIteratorRef> 48 (const_cast<symbol_iterator*>(SI)); 49 } 50 51 inline relocation_iterator *unwrap(LLVMRelocationIteratorRef SI) { 52 return reinterpret_cast<relocation_iterator*>(SI); 53 } 54 55 inline LLVMRelocationIteratorRef 56 wrap(const relocation_iterator *SI) { 57 return reinterpret_cast<LLVMRelocationIteratorRef> 58 (const_cast<relocation_iterator*>(SI)); 59 } 60 61 // ObjectFile creation 62 LLVMObjectFileRef LLVMCreateObjectFile(LLVMMemoryBufferRef MemBuf) { 63 std::unique_ptr<MemoryBuffer> Buf(unwrap(MemBuf)); 64 ErrorOr<std::unique_ptr<ObjectFile>> ObjOrErr( 65 ObjectFile::createObjectFile(Buf->getMemBufferRef())); 66 std::unique_ptr<ObjectFile> Obj; 67 if (!ObjOrErr) 68 return nullptr; 69 70 auto *Ret = new OwningBinary<ObjectFile>(std::move(ObjOrErr.get()), std::move(Buf)); 71 return wrap(Ret); 72 } 73 74 void LLVMDisposeObjectFile(LLVMObjectFileRef ObjectFile) { 75 delete unwrap(ObjectFile); 76 } 77 78 // ObjectFile Section iterators 79 LLVMSectionIteratorRef LLVMGetSections(LLVMObjectFileRef OF) { 80 OwningBinary<ObjectFile> *OB = unwrap(OF); 81 section_iterator SI = OB->getBinary()->section_begin(); 82 return wrap(new section_iterator(SI)); 83 } 84 85 void LLVMDisposeSectionIterator(LLVMSectionIteratorRef SI) { 86 delete unwrap(SI); 87 } 88 89 LLVMBool LLVMIsSectionIteratorAtEnd(LLVMObjectFileRef OF, 90 LLVMSectionIteratorRef SI) { 91 OwningBinary<ObjectFile> *OB = unwrap(OF); 92 return (*unwrap(SI) == OB->getBinary()->section_end()) ? 1 : 0; 93 } 94 95 void LLVMMoveToNextSection(LLVMSectionIteratorRef SI) { 96 ++(*unwrap(SI)); 97 } 98 99 void LLVMMoveToContainingSection(LLVMSectionIteratorRef Sect, 100 LLVMSymbolIteratorRef Sym) { 101 ErrorOr<section_iterator> SecOrErr = (*unwrap(Sym))->getSection(); 102 if (std::error_code ec = SecOrErr.getError()) 103 report_fatal_error(ec.message()); 104 *unwrap(Sect) = *SecOrErr; 105 } 106 107 // ObjectFile Symbol iterators 108 LLVMSymbolIteratorRef LLVMGetSymbols(LLVMObjectFileRef OF) { 109 OwningBinary<ObjectFile> *OB = unwrap(OF); 110 symbol_iterator SI = OB->getBinary()->symbol_begin(); 111 return wrap(new symbol_iterator(SI)); 112 } 113 114 void LLVMDisposeSymbolIterator(LLVMSymbolIteratorRef SI) { 115 delete unwrap(SI); 116 } 117 118 LLVMBool LLVMIsSymbolIteratorAtEnd(LLVMObjectFileRef OF, 119 LLVMSymbolIteratorRef SI) { 120 OwningBinary<ObjectFile> *OB = unwrap(OF); 121 return (*unwrap(SI) == OB->getBinary()->symbol_end()) ? 1 : 0; 122 } 123 124 void LLVMMoveToNextSymbol(LLVMSymbolIteratorRef SI) { 125 ++(*unwrap(SI)); 126 } 127 128 // SectionRef accessors 129 const char *LLVMGetSectionName(LLVMSectionIteratorRef SI) { 130 StringRef ret; 131 if (std::error_code ec = (*unwrap(SI))->getName(ret)) 132 report_fatal_error(ec.message()); 133 return ret.data(); 134 } 135 136 uint64_t LLVMGetSectionSize(LLVMSectionIteratorRef SI) { 137 return (*unwrap(SI))->getSize(); 138 } 139 140 const char *LLVMGetSectionContents(LLVMSectionIteratorRef SI) { 141 StringRef ret; 142 if (std::error_code ec = (*unwrap(SI))->getContents(ret)) 143 report_fatal_error(ec.message()); 144 return ret.data(); 145 } 146 147 uint64_t LLVMGetSectionAddress(LLVMSectionIteratorRef SI) { 148 return (*unwrap(SI))->getAddress(); 149 } 150 151 LLVMBool LLVMGetSectionContainsSymbol(LLVMSectionIteratorRef SI, 152 LLVMSymbolIteratorRef Sym) { 153 return (*unwrap(SI))->containsSymbol(**unwrap(Sym)); 154 } 155 156 // Section Relocation iterators 157 LLVMRelocationIteratorRef LLVMGetRelocations(LLVMSectionIteratorRef Section) { 158 relocation_iterator SI = (*unwrap(Section))->relocation_begin(); 159 return wrap(new relocation_iterator(SI)); 160 } 161 162 void LLVMDisposeRelocationIterator(LLVMRelocationIteratorRef SI) { 163 delete unwrap(SI); 164 } 165 166 LLVMBool LLVMIsRelocationIteratorAtEnd(LLVMSectionIteratorRef Section, 167 LLVMRelocationIteratorRef SI) { 168 return (*unwrap(SI) == (*unwrap(Section))->relocation_end()) ? 1 : 0; 169 } 170 171 void LLVMMoveToNextRelocation(LLVMRelocationIteratorRef SI) { 172 ++(*unwrap(SI)); 173 } 174 175 176 // SymbolRef accessors 177 const char *LLVMGetSymbolName(LLVMSymbolIteratorRef SI) { 178 ErrorOr<StringRef> Ret = (*unwrap(SI))->getName(); 179 if (std::error_code EC = Ret.getError()) 180 report_fatal_error(EC.message()); 181 return Ret->data(); 182 } 183 184 uint64_t LLVMGetSymbolAddress(LLVMSymbolIteratorRef SI) { 185 ErrorOr<uint64_t> Ret = (*unwrap(SI))->getAddress(); 186 if (std::error_code EC = Ret.getError()) 187 report_fatal_error(EC.message()); 188 return *Ret; 189 } 190 191 uint64_t LLVMGetSymbolSize(LLVMSymbolIteratorRef SI) { 192 return (*unwrap(SI))->getCommonSize(); 193 } 194 195 // RelocationRef accessors 196 uint64_t LLVMGetRelocationOffset(LLVMRelocationIteratorRef RI) { 197 return (*unwrap(RI))->getOffset(); 198 } 199 200 LLVMSymbolIteratorRef LLVMGetRelocationSymbol(LLVMRelocationIteratorRef RI) { 201 symbol_iterator ret = (*unwrap(RI))->getSymbol(); 202 return wrap(new symbol_iterator(ret)); 203 } 204 205 uint64_t LLVMGetRelocationType(LLVMRelocationIteratorRef RI) { 206 return (*unwrap(RI))->getType(); 207 } 208 209 // NOTE: Caller takes ownership of returned string. 210 const char *LLVMGetRelocationTypeName(LLVMRelocationIteratorRef RI) { 211 SmallVector<char, 0> ret; 212 (*unwrap(RI))->getTypeName(ret); 213 char *str = static_cast<char*>(malloc(ret.size())); 214 std::copy(ret.begin(), ret.end(), str); 215 return str; 216 } 217 218 // NOTE: Caller takes ownership of returned string. 219 const char *LLVMGetRelocationValueString(LLVMRelocationIteratorRef RI) { 220 return strdup(""); 221 } 222 223
