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 ObjectFile *unwrap(LLVMObjectFileRef OF) { 23 return reinterpret_cast<ObjectFile*>(OF); 24 } 25 26 inline LLVMObjectFileRef wrap(const ObjectFile *OF) { 27 return reinterpret_cast<LLVMObjectFileRef>(const_cast<ObjectFile*>(OF)); 28 } 29 30 inline section_iterator *unwrap(LLVMSectionIteratorRef SI) { 31 return reinterpret_cast<section_iterator*>(SI); 32 } 33 34 inline LLVMSectionIteratorRef 35 wrap(const section_iterator *SI) { 36 return reinterpret_cast<LLVMSectionIteratorRef> 37 (const_cast<section_iterator*>(SI)); 38 } 39 40 inline symbol_iterator *unwrap(LLVMSymbolIteratorRef SI) { 41 return reinterpret_cast<symbol_iterator*>(SI); 42 } 43 44 inline LLVMSymbolIteratorRef 45 wrap(const symbol_iterator *SI) { 46 return reinterpret_cast<LLVMSymbolIteratorRef> 47 (const_cast<symbol_iterator*>(SI)); 48 } 49 50 inline relocation_iterator *unwrap(LLVMRelocationIteratorRef SI) { 51 return reinterpret_cast<relocation_iterator*>(SI); 52 } 53 54 inline LLVMRelocationIteratorRef 55 wrap(const relocation_iterator *SI) { 56 return reinterpret_cast<LLVMRelocationIteratorRef> 57 (const_cast<relocation_iterator*>(SI)); 58 } 59 60 // ObjectFile creation 61 LLVMObjectFileRef LLVMCreateObjectFile(LLVMMemoryBufferRef MemBuf) { 62 std::unique_ptr<MemoryBuffer> Buf(unwrap(MemBuf)); 63 ErrorOr<ObjectFile *> ObjOrErr(ObjectFile::createObjectFile(Buf)); 64 Buf.release(); 65 ObjectFile *Obj = ObjOrErr ? ObjOrErr.get() : nullptr; 66 return wrap(Obj); 67 } 68 69 void LLVMDisposeObjectFile(LLVMObjectFileRef ObjectFile) { 70 delete unwrap(ObjectFile); 71 } 72 73 // ObjectFile Section iterators 74 LLVMSectionIteratorRef LLVMGetSections(LLVMObjectFileRef ObjectFile) { 75 section_iterator SI = unwrap(ObjectFile)->section_begin(); 76 return wrap(new section_iterator(SI)); 77 } 78 79 void LLVMDisposeSectionIterator(LLVMSectionIteratorRef SI) { 80 delete unwrap(SI); 81 } 82 83 LLVMBool LLVMIsSectionIteratorAtEnd(LLVMObjectFileRef ObjectFile, 84 LLVMSectionIteratorRef SI) { 85 return (*unwrap(SI) == unwrap(ObjectFile)->section_end()) ? 1 : 0; 86 } 87 88 void LLVMMoveToNextSection(LLVMSectionIteratorRef SI) { 89 ++(*unwrap(SI)); 90 } 91 92 void LLVMMoveToContainingSection(LLVMSectionIteratorRef Sect, 93 LLVMSymbolIteratorRef Sym) { 94 if (std::error_code ec = (*unwrap(Sym))->getSection(*unwrap(Sect))) 95 report_fatal_error(ec.message()); 96 } 97 98 // ObjectFile Symbol iterators 99 LLVMSymbolIteratorRef LLVMGetSymbols(LLVMObjectFileRef ObjectFile) { 100 symbol_iterator SI = unwrap(ObjectFile)->symbol_begin(); 101 return wrap(new symbol_iterator(SI)); 102 } 103 104 void LLVMDisposeSymbolIterator(LLVMSymbolIteratorRef SI) { 105 delete unwrap(SI); 106 } 107 108 LLVMBool LLVMIsSymbolIteratorAtEnd(LLVMObjectFileRef ObjectFile, 109 LLVMSymbolIteratorRef SI) { 110 return (*unwrap(SI) == unwrap(ObjectFile)->symbol_end()) ? 1 : 0; 111 } 112 113 void LLVMMoveToNextSymbol(LLVMSymbolIteratorRef SI) { 114 ++(*unwrap(SI)); 115 } 116 117 // SectionRef accessors 118 const char *LLVMGetSectionName(LLVMSectionIteratorRef SI) { 119 StringRef ret; 120 if (std::error_code ec = (*unwrap(SI))->getName(ret)) 121 report_fatal_error(ec.message()); 122 return ret.data(); 123 } 124 125 uint64_t LLVMGetSectionSize(LLVMSectionIteratorRef SI) { 126 uint64_t ret; 127 if (std::error_code ec = (*unwrap(SI))->getSize(ret)) 128 report_fatal_error(ec.message()); 129 return ret; 130 } 131 132 const char *LLVMGetSectionContents(LLVMSectionIteratorRef SI) { 133 StringRef ret; 134 if (std::error_code ec = (*unwrap(SI))->getContents(ret)) 135 report_fatal_error(ec.message()); 136 return ret.data(); 137 } 138 139 uint64_t LLVMGetSectionAddress(LLVMSectionIteratorRef SI) { 140 uint64_t ret; 141 if (std::error_code ec = (*unwrap(SI))->getAddress(ret)) 142 report_fatal_error(ec.message()); 143 return ret; 144 } 145 146 LLVMBool LLVMGetSectionContainsSymbol(LLVMSectionIteratorRef SI, 147 LLVMSymbolIteratorRef Sym) { 148 bool ret; 149 if (std::error_code ec = (*unwrap(SI))->containsSymbol(**unwrap(Sym), ret)) 150 report_fatal_error(ec.message()); 151 return ret; 152 } 153 154 // Section Relocation iterators 155 LLVMRelocationIteratorRef LLVMGetRelocations(LLVMSectionIteratorRef Section) { 156 relocation_iterator SI = (*unwrap(Section))->relocation_begin(); 157 return wrap(new relocation_iterator(SI)); 158 } 159 160 void LLVMDisposeRelocationIterator(LLVMRelocationIteratorRef SI) { 161 delete unwrap(SI); 162 } 163 164 LLVMBool LLVMIsRelocationIteratorAtEnd(LLVMSectionIteratorRef Section, 165 LLVMRelocationIteratorRef SI) { 166 return (*unwrap(SI) == (*unwrap(Section))->relocation_end()) ? 1 : 0; 167 } 168 169 void LLVMMoveToNextRelocation(LLVMRelocationIteratorRef SI) { 170 ++(*unwrap(SI)); 171 } 172 173 174 // SymbolRef accessors 175 const char *LLVMGetSymbolName(LLVMSymbolIteratorRef SI) { 176 StringRef ret; 177 if (std::error_code ec = (*unwrap(SI))->getName(ret)) 178 report_fatal_error(ec.message()); 179 return ret.data(); 180 } 181 182 uint64_t LLVMGetSymbolAddress(LLVMSymbolIteratorRef SI) { 183 uint64_t ret; 184 if (std::error_code ec = (*unwrap(SI))->getAddress(ret)) 185 report_fatal_error(ec.message()); 186 return ret; 187 } 188 189 uint64_t LLVMGetSymbolSize(LLVMSymbolIteratorRef SI) { 190 uint64_t ret; 191 if (std::error_code ec = (*unwrap(SI))->getSize(ret)) 192 report_fatal_error(ec.message()); 193 return ret; 194 } 195 196 // RelocationRef accessors 197 uint64_t LLVMGetRelocationAddress(LLVMRelocationIteratorRef RI) { 198 uint64_t ret; 199 if (std::error_code ec = (*unwrap(RI))->getAddress(ret)) 200 report_fatal_error(ec.message()); 201 return ret; 202 } 203 204 uint64_t LLVMGetRelocationOffset(LLVMRelocationIteratorRef RI) { 205 uint64_t ret; 206 if (std::error_code ec = (*unwrap(RI))->getOffset(ret)) 207 report_fatal_error(ec.message()); 208 return ret; 209 } 210 211 LLVMSymbolIteratorRef LLVMGetRelocationSymbol(LLVMRelocationIteratorRef RI) { 212 symbol_iterator ret = (*unwrap(RI))->getSymbol(); 213 return wrap(new symbol_iterator(ret)); 214 } 215 216 uint64_t LLVMGetRelocationType(LLVMRelocationIteratorRef RI) { 217 uint64_t ret; 218 if (std::error_code ec = (*unwrap(RI))->getType(ret)) 219 report_fatal_error(ec.message()); 220 return ret; 221 } 222 223 // NOTE: Caller takes ownership of returned string. 224 const char *LLVMGetRelocationTypeName(LLVMRelocationIteratorRef RI) { 225 SmallVector<char, 0> ret; 226 if (std::error_code ec = (*unwrap(RI))->getTypeName(ret)) 227 report_fatal_error(ec.message()); 228 229 char *str = static_cast<char*>(malloc(ret.size())); 230 std::copy(ret.begin(), ret.end(), str); 231 return str; 232 } 233 234 // NOTE: Caller takes ownership of returned string. 235 const char *LLVMGetRelocationValueString(LLVMRelocationIteratorRef RI) { 236 SmallVector<char, 0> ret; 237 if (std::error_code ec = (*unwrap(RI))->getValueString(ret)) 238 report_fatal_error(ec.message()); 239 240 char *str = static_cast<char*>(malloc(ret.size())); 241 std::copy(ret.begin(), ret.end(), str); 242 return str; 243 } 244 245
