| File: | src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Object/MachOObjectFile.cpp |
| Warning: | line 4038, column 41 The right operand of '-' is a garbage value |
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| 1 | //===- MachOObjectFile.cpp - Mach-O object file binding -------------------===// | |||
| 2 | // | |||
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |||
| 4 | // See https://llvm.org/LICENSE.txt for license information. | |||
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |||
| 6 | // | |||
| 7 | //===----------------------------------------------------------------------===// | |||
| 8 | // | |||
| 9 | // This file defines the MachOObjectFile class, which binds the MachOObject | |||
| 10 | // class to the generic ObjectFile wrapper. | |||
| 11 | // | |||
| 12 | //===----------------------------------------------------------------------===// | |||
| 13 | ||||
| 14 | #include "llvm/ADT/ArrayRef.h" | |||
| 15 | #include "llvm/ADT/None.h" | |||
| 16 | #include "llvm/ADT/STLExtras.h" | |||
| 17 | #include "llvm/ADT/SmallVector.h" | |||
| 18 | #include "llvm/ADT/StringRef.h" | |||
| 19 | #include "llvm/ADT/StringSwitch.h" | |||
| 20 | #include "llvm/ADT/Triple.h" | |||
| 21 | #include "llvm/ADT/Twine.h" | |||
| 22 | #include "llvm/BinaryFormat/MachO.h" | |||
| 23 | #include "llvm/Object/Error.h" | |||
| 24 | #include "llvm/Object/MachO.h" | |||
| 25 | #include "llvm/Object/ObjectFile.h" | |||
| 26 | #include "llvm/Object/SymbolicFile.h" | |||
| 27 | #include "llvm/Support/DataExtractor.h" | |||
| 28 | #include "llvm/Support/Debug.h" | |||
| 29 | #include "llvm/Support/Error.h" | |||
| 30 | #include "llvm/Support/ErrorHandling.h" | |||
| 31 | #include "llvm/Support/Format.h" | |||
| 32 | #include "llvm/Support/Host.h" | |||
| 33 | #include "llvm/Support/LEB128.h" | |||
| 34 | #include "llvm/Support/MemoryBuffer.h" | |||
| 35 | #include "llvm/Support/SwapByteOrder.h" | |||
| 36 | #include "llvm/Support/raw_ostream.h" | |||
| 37 | #include <algorithm> | |||
| 38 | #include <cassert> | |||
| 39 | #include <cstddef> | |||
| 40 | #include <cstdint> | |||
| 41 | #include <cstring> | |||
| 42 | #include <limits> | |||
| 43 | #include <list> | |||
| 44 | #include <memory> | |||
| 45 | #include <system_error> | |||
| 46 | ||||
| 47 | using namespace llvm; | |||
| 48 | using namespace object; | |||
| 49 | ||||
| 50 | namespace { | |||
| 51 | ||||
| 52 | struct section_base { | |||
| 53 | char sectname[16]; | |||
| 54 | char segname[16]; | |||
| 55 | }; | |||
| 56 | ||||
| 57 | } // end anonymous namespace | |||
| 58 | ||||
| 59 | static Error malformedError(const Twine &Msg) { | |||
| 60 | return make_error<GenericBinaryError>("truncated or malformed object (" + | |||
| 61 | Msg + ")", | |||
| 62 | object_error::parse_failed); | |||
| 63 | } | |||
| 64 | ||||
| 65 | // FIXME: Replace all uses of this function with getStructOrErr. | |||
| 66 | template <typename T> | |||
| 67 | static T getStruct(const MachOObjectFile &O, const char *P) { | |||
| 68 | // Don't read before the beginning or past the end of the file | |||
| 69 | if (P < O.getData().begin() || P + sizeof(T) > O.getData().end()) | |||
| 70 | report_fatal_error("Malformed MachO file."); | |||
| 71 | ||||
| 72 | T Cmd; | |||
| 73 | memcpy(&Cmd, P, sizeof(T)); | |||
| 74 | if (O.isLittleEndian() != sys::IsLittleEndianHost) | |||
| 75 | MachO::swapStruct(Cmd); | |||
| 76 | return Cmd; | |||
| 77 | } | |||
| 78 | ||||
| 79 | template <typename T> | |||
| 80 | static Expected<T> getStructOrErr(const MachOObjectFile &O, const char *P) { | |||
| 81 | // Don't read before the beginning or past the end of the file | |||
| 82 | if (P < O.getData().begin() || P + sizeof(T) > O.getData().end()) | |||
| 83 | return malformedError("Structure read out-of-range"); | |||
| 84 | ||||
| 85 | T Cmd; | |||
| 86 | memcpy(&Cmd, P, sizeof(T)); | |||
| 87 | if (O.isLittleEndian() != sys::IsLittleEndianHost) | |||
| 88 | MachO::swapStruct(Cmd); | |||
| 89 | return Cmd; | |||
| 90 | } | |||
| 91 | ||||
| 92 | static const char * | |||
| 93 | getSectionPtr(const MachOObjectFile &O, MachOObjectFile::LoadCommandInfo L, | |||
| 94 | unsigned Sec) { | |||
| 95 | uintptr_t CommandAddr = reinterpret_cast<uintptr_t>(L.Ptr); | |||
| 96 | ||||
| 97 | bool Is64 = O.is64Bit(); | |||
| 98 | unsigned SegmentLoadSize = Is64 ? sizeof(MachO::segment_command_64) : | |||
| 99 | sizeof(MachO::segment_command); | |||
| 100 | unsigned SectionSize = Is64 ? sizeof(MachO::section_64) : | |||
| 101 | sizeof(MachO::section); | |||
| 102 | ||||
| 103 | uintptr_t SectionAddr = CommandAddr + SegmentLoadSize + Sec * SectionSize; | |||
| 104 | return reinterpret_cast<const char*>(SectionAddr); | |||
| 105 | } | |||
| 106 | ||||
| 107 | static const char *getPtr(const MachOObjectFile &O, size_t Offset) { | |||
| 108 | assert(Offset <= O.getData().size())((void)0); | |||
| 109 | return O.getData().data() + Offset; | |||
| 110 | } | |||
| 111 | ||||
| 112 | static MachO::nlist_base | |||
| 113 | getSymbolTableEntryBase(const MachOObjectFile &O, DataRefImpl DRI) { | |||
| 114 | const char *P = reinterpret_cast<const char *>(DRI.p); | |||
| 115 | return getStruct<MachO::nlist_base>(O, P); | |||
| 116 | } | |||
| 117 | ||||
| 118 | static StringRef parseSegmentOrSectionName(const char *P) { | |||
| 119 | if (P[15] == 0) | |||
| 120 | // Null terminated. | |||
| 121 | return P; | |||
| 122 | // Not null terminated, so this is a 16 char string. | |||
| 123 | return StringRef(P, 16); | |||
| 124 | } | |||
| 125 | ||||
| 126 | static unsigned getCPUType(const MachOObjectFile &O) { | |||
| 127 | return O.getHeader().cputype; | |||
| 128 | } | |||
| 129 | ||||
| 130 | static unsigned getCPUSubType(const MachOObjectFile &O) { | |||
| 131 | return O.getHeader().cpusubtype; | |||
| 132 | } | |||
| 133 | ||||
| 134 | static uint32_t | |||
| 135 | getPlainRelocationAddress(const MachO::any_relocation_info &RE) { | |||
| 136 | return RE.r_word0; | |||
| 137 | } | |||
| 138 | ||||
| 139 | static unsigned | |||
| 140 | getScatteredRelocationAddress(const MachO::any_relocation_info &RE) { | |||
| 141 | return RE.r_word0 & 0xffffff; | |||
| 142 | } | |||
| 143 | ||||
| 144 | static bool getPlainRelocationPCRel(const MachOObjectFile &O, | |||
| 145 | const MachO::any_relocation_info &RE) { | |||
| 146 | if (O.isLittleEndian()) | |||
| 147 | return (RE.r_word1 >> 24) & 1; | |||
| 148 | return (RE.r_word1 >> 7) & 1; | |||
| 149 | } | |||
| 150 | ||||
| 151 | static bool | |||
| 152 | getScatteredRelocationPCRel(const MachO::any_relocation_info &RE) { | |||
| 153 | return (RE.r_word0 >> 30) & 1; | |||
| 154 | } | |||
| 155 | ||||
| 156 | static unsigned getPlainRelocationLength(const MachOObjectFile &O, | |||
| 157 | const MachO::any_relocation_info &RE) { | |||
| 158 | if (O.isLittleEndian()) | |||
| 159 | return (RE.r_word1 >> 25) & 3; | |||
| 160 | return (RE.r_word1 >> 5) & 3; | |||
| 161 | } | |||
| 162 | ||||
| 163 | static unsigned | |||
| 164 | getScatteredRelocationLength(const MachO::any_relocation_info &RE) { | |||
| 165 | return (RE.r_word0 >> 28) & 3; | |||
| 166 | } | |||
| 167 | ||||
| 168 | static unsigned getPlainRelocationType(const MachOObjectFile &O, | |||
| 169 | const MachO::any_relocation_info &RE) { | |||
| 170 | if (O.isLittleEndian()) | |||
| 171 | return RE.r_word1 >> 28; | |||
| 172 | return RE.r_word1 & 0xf; | |||
| 173 | } | |||
| 174 | ||||
| 175 | static uint32_t getSectionFlags(const MachOObjectFile &O, | |||
| 176 | DataRefImpl Sec) { | |||
| 177 | if (O.is64Bit()) { | |||
| 178 | MachO::section_64 Sect = O.getSection64(Sec); | |||
| 179 | return Sect.flags; | |||
| 180 | } | |||
| 181 | MachO::section Sect = O.getSection(Sec); | |||
| 182 | return Sect.flags; | |||
| 183 | } | |||
| 184 | ||||
| 185 | static Expected<MachOObjectFile::LoadCommandInfo> | |||
| 186 | getLoadCommandInfo(const MachOObjectFile &Obj, const char *Ptr, | |||
| 187 | uint32_t LoadCommandIndex) { | |||
| 188 | if (auto CmdOrErr = getStructOrErr<MachO::load_command>(Obj, Ptr)) { | |||
| 189 | if (CmdOrErr->cmdsize + Ptr > Obj.getData().end()) | |||
| 190 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 191 | " extends past end of file"); | |||
| 192 | if (CmdOrErr->cmdsize < 8) | |||
| 193 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 194 | " with size less than 8 bytes"); | |||
| 195 | return MachOObjectFile::LoadCommandInfo({Ptr, *CmdOrErr}); | |||
| 196 | } else | |||
| 197 | return CmdOrErr.takeError(); | |||
| 198 | } | |||
| 199 | ||||
| 200 | static Expected<MachOObjectFile::LoadCommandInfo> | |||
| 201 | getFirstLoadCommandInfo(const MachOObjectFile &Obj) { | |||
| 202 | unsigned HeaderSize = Obj.is64Bit() ? sizeof(MachO::mach_header_64) | |||
| 203 | : sizeof(MachO::mach_header); | |||
| 204 | if (sizeof(MachO::load_command) > Obj.getHeader().sizeofcmds) | |||
| 205 | return malformedError("load command 0 extends past the end all load " | |||
| 206 | "commands in the file"); | |||
| 207 | return getLoadCommandInfo(Obj, getPtr(Obj, HeaderSize), 0); | |||
| 208 | } | |||
| 209 | ||||
| 210 | static Expected<MachOObjectFile::LoadCommandInfo> | |||
| 211 | getNextLoadCommandInfo(const MachOObjectFile &Obj, uint32_t LoadCommandIndex, | |||
| 212 | const MachOObjectFile::LoadCommandInfo &L) { | |||
| 213 | unsigned HeaderSize = Obj.is64Bit() ? sizeof(MachO::mach_header_64) | |||
| 214 | : sizeof(MachO::mach_header); | |||
| 215 | if (L.Ptr + L.C.cmdsize + sizeof(MachO::load_command) > | |||
| 216 | Obj.getData().data() + HeaderSize + Obj.getHeader().sizeofcmds) | |||
| 217 | return malformedError("load command " + Twine(LoadCommandIndex + 1) + | |||
| 218 | " extends past the end all load commands in the file"); | |||
| 219 | return getLoadCommandInfo(Obj, L.Ptr + L.C.cmdsize, LoadCommandIndex + 1); | |||
| 220 | } | |||
| 221 | ||||
| 222 | template <typename T> | |||
| 223 | static void parseHeader(const MachOObjectFile &Obj, T &Header, | |||
| 224 | Error &Err) { | |||
| 225 | if (sizeof(T) > Obj.getData().size()) { | |||
| 226 | Err = malformedError("the mach header extends past the end of the " | |||
| 227 | "file"); | |||
| 228 | return; | |||
| 229 | } | |||
| 230 | if (auto HeaderOrErr = getStructOrErr<T>(Obj, getPtr(Obj, 0))) | |||
| 231 | Header = *HeaderOrErr; | |||
| 232 | else | |||
| 233 | Err = HeaderOrErr.takeError(); | |||
| 234 | } | |||
| 235 | ||||
| 236 | // This is used to check for overlapping of Mach-O elements. | |||
| 237 | struct MachOElement { | |||
| 238 | uint64_t Offset; | |||
| 239 | uint64_t Size; | |||
| 240 | const char *Name; | |||
| 241 | }; | |||
| 242 | ||||
| 243 | static Error checkOverlappingElement(std::list<MachOElement> &Elements, | |||
| 244 | uint64_t Offset, uint64_t Size, | |||
| 245 | const char *Name) { | |||
| 246 | if (Size == 0) | |||
| 247 | return Error::success(); | |||
| 248 | ||||
| 249 | for (auto it=Elements.begin() ; it != Elements.end(); ++it) { | |||
| 250 | auto E = *it; | |||
| 251 | if ((Offset >= E.Offset && Offset < E.Offset + E.Size) || | |||
| 252 | (Offset + Size > E.Offset && Offset + Size < E.Offset + E.Size) || | |||
| 253 | (Offset <= E.Offset && Offset + Size >= E.Offset + E.Size)) | |||
| 254 | return malformedError(Twine(Name) + " at offset " + Twine(Offset) + | |||
| 255 | " with a size of " + Twine(Size) + ", overlaps " + | |||
| 256 | E.Name + " at offset " + Twine(E.Offset) + " with " | |||
| 257 | "a size of " + Twine(E.Size)); | |||
| 258 | auto nt = it; | |||
| 259 | nt++; | |||
| 260 | if (nt != Elements.end()) { | |||
| 261 | auto N = *nt; | |||
| 262 | if (Offset + Size <= N.Offset) { | |||
| 263 | Elements.insert(nt, {Offset, Size, Name}); | |||
| 264 | return Error::success(); | |||
| 265 | } | |||
| 266 | } | |||
| 267 | } | |||
| 268 | Elements.push_back({Offset, Size, Name}); | |||
| 269 | return Error::success(); | |||
| 270 | } | |||
| 271 | ||||
| 272 | // Parses LC_SEGMENT or LC_SEGMENT_64 load command, adds addresses of all | |||
| 273 | // sections to \param Sections, and optionally sets | |||
| 274 | // \param IsPageZeroSegment to true. | |||
| 275 | template <typename Segment, typename Section> | |||
| 276 | static Error parseSegmentLoadCommand( | |||
| 277 | const MachOObjectFile &Obj, const MachOObjectFile::LoadCommandInfo &Load, | |||
| 278 | SmallVectorImpl<const char *> &Sections, bool &IsPageZeroSegment, | |||
| 279 | uint32_t LoadCommandIndex, const char *CmdName, uint64_t SizeOfHeaders, | |||
| 280 | std::list<MachOElement> &Elements) { | |||
| 281 | const unsigned SegmentLoadSize = sizeof(Segment); | |||
| 282 | if (Load.C.cmdsize < SegmentLoadSize) | |||
| 283 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 284 | " " + CmdName + " cmdsize too small"); | |||
| 285 | if (auto SegOrErr = getStructOrErr<Segment>(Obj, Load.Ptr)) { | |||
| 286 | Segment S = SegOrErr.get(); | |||
| 287 | const unsigned SectionSize = sizeof(Section); | |||
| 288 | uint64_t FileSize = Obj.getData().size(); | |||
| 289 | if (S.nsects > std::numeric_limits<uint32_t>::max() / SectionSize || | |||
| 290 | S.nsects * SectionSize > Load.C.cmdsize - SegmentLoadSize) | |||
| 291 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 292 | " inconsistent cmdsize in " + CmdName + | |||
| 293 | " for the number of sections"); | |||
| 294 | for (unsigned J = 0; J < S.nsects; ++J) { | |||
| 295 | const char *Sec = getSectionPtr(Obj, Load, J); | |||
| 296 | Sections.push_back(Sec); | |||
| 297 | auto SectionOrErr = getStructOrErr<Section>(Obj, Sec); | |||
| 298 | if (!SectionOrErr) | |||
| 299 | return SectionOrErr.takeError(); | |||
| 300 | Section s = SectionOrErr.get(); | |||
| 301 | if (Obj.getHeader().filetype != MachO::MH_DYLIB_STUB && | |||
| 302 | Obj.getHeader().filetype != MachO::MH_DSYM && | |||
| 303 | s.flags != MachO::S_ZEROFILL && | |||
| 304 | s.flags != MachO::S_THREAD_LOCAL_ZEROFILL && | |||
| 305 | s.offset > FileSize) | |||
| 306 | return malformedError("offset field of section " + Twine(J) + " in " + | |||
| 307 | CmdName + " command " + Twine(LoadCommandIndex) + | |||
| 308 | " extends past the end of the file"); | |||
| 309 | if (Obj.getHeader().filetype != MachO::MH_DYLIB_STUB && | |||
| 310 | Obj.getHeader().filetype != MachO::MH_DSYM && | |||
| 311 | s.flags != MachO::S_ZEROFILL && | |||
| 312 | s.flags != MachO::S_THREAD_LOCAL_ZEROFILL && S.fileoff == 0 && | |||
| 313 | s.offset < SizeOfHeaders && s.size != 0) | |||
| 314 | return malformedError("offset field of section " + Twine(J) + " in " + | |||
| 315 | CmdName + " command " + Twine(LoadCommandIndex) + | |||
| 316 | " not past the headers of the file"); | |||
| 317 | uint64_t BigSize = s.offset; | |||
| 318 | BigSize += s.size; | |||
| 319 | if (Obj.getHeader().filetype != MachO::MH_DYLIB_STUB && | |||
| 320 | Obj.getHeader().filetype != MachO::MH_DSYM && | |||
| 321 | s.flags != MachO::S_ZEROFILL && | |||
| 322 | s.flags != MachO::S_THREAD_LOCAL_ZEROFILL && | |||
| 323 | BigSize > FileSize) | |||
| 324 | return malformedError("offset field plus size field of section " + | |||
| 325 | Twine(J) + " in " + CmdName + " command " + | |||
| 326 | Twine(LoadCommandIndex) + | |||
| 327 | " extends past the end of the file"); | |||
| 328 | if (Obj.getHeader().filetype != MachO::MH_DYLIB_STUB && | |||
| 329 | Obj.getHeader().filetype != MachO::MH_DSYM && | |||
| 330 | s.flags != MachO::S_ZEROFILL && | |||
| 331 | s.flags != MachO::S_THREAD_LOCAL_ZEROFILL && | |||
| 332 | s.size > S.filesize) | |||
| 333 | return malformedError("size field of section " + | |||
| 334 | Twine(J) + " in " + CmdName + " command " + | |||
| 335 | Twine(LoadCommandIndex) + | |||
| 336 | " greater than the segment"); | |||
| 337 | if (Obj.getHeader().filetype != MachO::MH_DYLIB_STUB && | |||
| 338 | Obj.getHeader().filetype != MachO::MH_DSYM && s.size != 0 && | |||
| 339 | s.addr < S.vmaddr) | |||
| 340 | return malformedError("addr field of section " + Twine(J) + " in " + | |||
| 341 | CmdName + " command " + Twine(LoadCommandIndex) + | |||
| 342 | " less than the segment's vmaddr"); | |||
| 343 | BigSize = s.addr; | |||
| 344 | BigSize += s.size; | |||
| 345 | uint64_t BigEnd = S.vmaddr; | |||
| 346 | BigEnd += S.vmsize; | |||
| 347 | if (S.vmsize != 0 && s.size != 0 && BigSize > BigEnd) | |||
| 348 | return malformedError("addr field plus size of section " + Twine(J) + | |||
| 349 | " in " + CmdName + " command " + | |||
| 350 | Twine(LoadCommandIndex) + | |||
| 351 | " greater than than " | |||
| 352 | "the segment's vmaddr plus vmsize"); | |||
| 353 | if (Obj.getHeader().filetype != MachO::MH_DYLIB_STUB && | |||
| 354 | Obj.getHeader().filetype != MachO::MH_DSYM && | |||
| 355 | s.flags != MachO::S_ZEROFILL && | |||
| 356 | s.flags != MachO::S_THREAD_LOCAL_ZEROFILL) | |||
| 357 | if (Error Err = checkOverlappingElement(Elements, s.offset, s.size, | |||
| 358 | "section contents")) | |||
| 359 | return Err; | |||
| 360 | if (s.reloff > FileSize) | |||
| 361 | return malformedError("reloff field of section " + Twine(J) + " in " + | |||
| 362 | CmdName + " command " + Twine(LoadCommandIndex) + | |||
| 363 | " extends past the end of the file"); | |||
| 364 | BigSize = s.nreloc; | |||
| 365 | BigSize *= sizeof(struct MachO::relocation_info); | |||
| 366 | BigSize += s.reloff; | |||
| 367 | if (BigSize > FileSize) | |||
| 368 | return malformedError("reloff field plus nreloc field times sizeof(" | |||
| 369 | "struct relocation_info) of section " + | |||
| 370 | Twine(J) + " in " + CmdName + " command " + | |||
| 371 | Twine(LoadCommandIndex) + | |||
| 372 | " extends past the end of the file"); | |||
| 373 | if (Error Err = checkOverlappingElement(Elements, s.reloff, s.nreloc * | |||
| 374 | sizeof(struct | |||
| 375 | MachO::relocation_info), | |||
| 376 | "section relocation entries")) | |||
| 377 | return Err; | |||
| 378 | } | |||
| 379 | if (S.fileoff > FileSize) | |||
| 380 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 381 | " fileoff field in " + CmdName + | |||
| 382 | " extends past the end of the file"); | |||
| 383 | uint64_t BigSize = S.fileoff; | |||
| 384 | BigSize += S.filesize; | |||
| 385 | if (BigSize > FileSize) | |||
| 386 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 387 | " fileoff field plus filesize field in " + | |||
| 388 | CmdName + " extends past the end of the file"); | |||
| 389 | if (S.vmsize != 0 && S.filesize > S.vmsize) | |||
| 390 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 391 | " filesize field in " + CmdName + | |||
| 392 | " greater than vmsize field"); | |||
| 393 | IsPageZeroSegment |= StringRef("__PAGEZERO").equals(S.segname); | |||
| 394 | } else | |||
| 395 | return SegOrErr.takeError(); | |||
| 396 | ||||
| 397 | return Error::success(); | |||
| 398 | } | |||
| 399 | ||||
| 400 | static Error checkSymtabCommand(const MachOObjectFile &Obj, | |||
| 401 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 402 | uint32_t LoadCommandIndex, | |||
| 403 | const char **SymtabLoadCmd, | |||
| 404 | std::list<MachOElement> &Elements) { | |||
| 405 | if (Load.C.cmdsize < sizeof(MachO::symtab_command)) | |||
| 406 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 407 | " LC_SYMTAB cmdsize too small"); | |||
| 408 | if (*SymtabLoadCmd != nullptr) | |||
| 409 | return malformedError("more than one LC_SYMTAB command"); | |||
| 410 | auto SymtabOrErr = getStructOrErr<MachO::symtab_command>(Obj, Load.Ptr); | |||
| 411 | if (!SymtabOrErr) | |||
| 412 | return SymtabOrErr.takeError(); | |||
| 413 | MachO::symtab_command Symtab = SymtabOrErr.get(); | |||
| 414 | if (Symtab.cmdsize != sizeof(MachO::symtab_command)) | |||
| 415 | return malformedError("LC_SYMTAB command " + Twine(LoadCommandIndex) + | |||
| 416 | " has incorrect cmdsize"); | |||
| 417 | uint64_t FileSize = Obj.getData().size(); | |||
| 418 | if (Symtab.symoff > FileSize) | |||
| 419 | return malformedError("symoff field of LC_SYMTAB command " + | |||
| 420 | Twine(LoadCommandIndex) + " extends past the end " | |||
| 421 | "of the file"); | |||
| 422 | uint64_t SymtabSize = Symtab.nsyms; | |||
| 423 | const char *struct_nlist_name; | |||
| 424 | if (Obj.is64Bit()) { | |||
| 425 | SymtabSize *= sizeof(MachO::nlist_64); | |||
| 426 | struct_nlist_name = "struct nlist_64"; | |||
| 427 | } else { | |||
| 428 | SymtabSize *= sizeof(MachO::nlist); | |||
| 429 | struct_nlist_name = "struct nlist"; | |||
| 430 | } | |||
| 431 | uint64_t BigSize = SymtabSize; | |||
| 432 | BigSize += Symtab.symoff; | |||
| 433 | if (BigSize > FileSize) | |||
| 434 | return malformedError("symoff field plus nsyms field times sizeof(" + | |||
| 435 | Twine(struct_nlist_name) + ") of LC_SYMTAB command " + | |||
| 436 | Twine(LoadCommandIndex) + " extends past the end " | |||
| 437 | "of the file"); | |||
| 438 | if (Error Err = checkOverlappingElement(Elements, Symtab.symoff, SymtabSize, | |||
| 439 | "symbol table")) | |||
| 440 | return Err; | |||
| 441 | if (Symtab.stroff > FileSize) | |||
| 442 | return malformedError("stroff field of LC_SYMTAB command " + | |||
| 443 | Twine(LoadCommandIndex) + " extends past the end " | |||
| 444 | "of the file"); | |||
| 445 | BigSize = Symtab.stroff; | |||
| 446 | BigSize += Symtab.strsize; | |||
| 447 | if (BigSize > FileSize) | |||
| 448 | return malformedError("stroff field plus strsize field of LC_SYMTAB " | |||
| 449 | "command " + Twine(LoadCommandIndex) + " extends " | |||
| 450 | "past the end of the file"); | |||
| 451 | if (Error Err = checkOverlappingElement(Elements, Symtab.stroff, | |||
| 452 | Symtab.strsize, "string table")) | |||
| 453 | return Err; | |||
| 454 | *SymtabLoadCmd = Load.Ptr; | |||
| 455 | return Error::success(); | |||
| 456 | } | |||
| 457 | ||||
| 458 | static Error checkDysymtabCommand(const MachOObjectFile &Obj, | |||
| 459 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 460 | uint32_t LoadCommandIndex, | |||
| 461 | const char **DysymtabLoadCmd, | |||
| 462 | std::list<MachOElement> &Elements) { | |||
| 463 | if (Load.C.cmdsize < sizeof(MachO::dysymtab_command)) | |||
| 464 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 465 | " LC_DYSYMTAB cmdsize too small"); | |||
| 466 | if (*DysymtabLoadCmd != nullptr) | |||
| 467 | return malformedError("more than one LC_DYSYMTAB command"); | |||
| 468 | auto DysymtabOrErr = | |||
| 469 | getStructOrErr<MachO::dysymtab_command>(Obj, Load.Ptr); | |||
| 470 | if (!DysymtabOrErr) | |||
| 471 | return DysymtabOrErr.takeError(); | |||
| 472 | MachO::dysymtab_command Dysymtab = DysymtabOrErr.get(); | |||
| 473 | if (Dysymtab.cmdsize != sizeof(MachO::dysymtab_command)) | |||
| 474 | return malformedError("LC_DYSYMTAB command " + Twine(LoadCommandIndex) + | |||
| 475 | " has incorrect cmdsize"); | |||
| 476 | uint64_t FileSize = Obj.getData().size(); | |||
| 477 | if (Dysymtab.tocoff > FileSize) | |||
| 478 | return malformedError("tocoff field of LC_DYSYMTAB command " + | |||
| 479 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 480 | "the file"); | |||
| 481 | uint64_t BigSize = Dysymtab.ntoc; | |||
| 482 | BigSize *= sizeof(MachO::dylib_table_of_contents); | |||
| 483 | BigSize += Dysymtab.tocoff; | |||
| 484 | if (BigSize > FileSize) | |||
| 485 | return malformedError("tocoff field plus ntoc field times sizeof(struct " | |||
| 486 | "dylib_table_of_contents) of LC_DYSYMTAB command " + | |||
| 487 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 488 | "the file"); | |||
| 489 | if (Error Err = checkOverlappingElement(Elements, Dysymtab.tocoff, | |||
| 490 | Dysymtab.ntoc * sizeof(struct | |||
| 491 | MachO::dylib_table_of_contents), | |||
| 492 | "table of contents")) | |||
| 493 | return Err; | |||
| 494 | if (Dysymtab.modtaboff > FileSize) | |||
| 495 | return malformedError("modtaboff field of LC_DYSYMTAB command " + | |||
| 496 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 497 | "the file"); | |||
| 498 | BigSize = Dysymtab.nmodtab; | |||
| 499 | const char *struct_dylib_module_name; | |||
| 500 | uint64_t sizeof_modtab; | |||
| 501 | if (Obj.is64Bit()) { | |||
| 502 | sizeof_modtab = sizeof(MachO::dylib_module_64); | |||
| 503 | struct_dylib_module_name = "struct dylib_module_64"; | |||
| 504 | } else { | |||
| 505 | sizeof_modtab = sizeof(MachO::dylib_module); | |||
| 506 | struct_dylib_module_name = "struct dylib_module"; | |||
| 507 | } | |||
| 508 | BigSize *= sizeof_modtab; | |||
| 509 | BigSize += Dysymtab.modtaboff; | |||
| 510 | if (BigSize > FileSize) | |||
| 511 | return malformedError("modtaboff field plus nmodtab field times sizeof(" + | |||
| 512 | Twine(struct_dylib_module_name) + ") of LC_DYSYMTAB " | |||
| 513 | "command " + Twine(LoadCommandIndex) + " extends " | |||
| 514 | "past the end of the file"); | |||
| 515 | if (Error Err = checkOverlappingElement(Elements, Dysymtab.modtaboff, | |||
| 516 | Dysymtab.nmodtab * sizeof_modtab, | |||
| 517 | "module table")) | |||
| 518 | return Err; | |||
| 519 | if (Dysymtab.extrefsymoff > FileSize) | |||
| 520 | return malformedError("extrefsymoff field of LC_DYSYMTAB command " + | |||
| 521 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 522 | "the file"); | |||
| 523 | BigSize = Dysymtab.nextrefsyms; | |||
| 524 | BigSize *= sizeof(MachO::dylib_reference); | |||
| 525 | BigSize += Dysymtab.extrefsymoff; | |||
| 526 | if (BigSize > FileSize) | |||
| 527 | return malformedError("extrefsymoff field plus nextrefsyms field times " | |||
| 528 | "sizeof(struct dylib_reference) of LC_DYSYMTAB " | |||
| 529 | "command " + Twine(LoadCommandIndex) + " extends " | |||
| 530 | "past the end of the file"); | |||
| 531 | if (Error Err = checkOverlappingElement(Elements, Dysymtab.extrefsymoff, | |||
| 532 | Dysymtab.nextrefsyms * | |||
| 533 | sizeof(MachO::dylib_reference), | |||
| 534 | "reference table")) | |||
| 535 | return Err; | |||
| 536 | if (Dysymtab.indirectsymoff > FileSize) | |||
| 537 | return malformedError("indirectsymoff field of LC_DYSYMTAB command " + | |||
| 538 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 539 | "the file"); | |||
| 540 | BigSize = Dysymtab.nindirectsyms; | |||
| 541 | BigSize *= sizeof(uint32_t); | |||
| 542 | BigSize += Dysymtab.indirectsymoff; | |||
| 543 | if (BigSize > FileSize) | |||
| 544 | return malformedError("indirectsymoff field plus nindirectsyms field times " | |||
| 545 | "sizeof(uint32_t) of LC_DYSYMTAB command " + | |||
| 546 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 547 | "the file"); | |||
| 548 | if (Error Err = checkOverlappingElement(Elements, Dysymtab.indirectsymoff, | |||
| 549 | Dysymtab.nindirectsyms * | |||
| 550 | sizeof(uint32_t), | |||
| 551 | "indirect table")) | |||
| 552 | return Err; | |||
| 553 | if (Dysymtab.extreloff > FileSize) | |||
| 554 | return malformedError("extreloff field of LC_DYSYMTAB command " + | |||
| 555 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 556 | "the file"); | |||
| 557 | BigSize = Dysymtab.nextrel; | |||
| 558 | BigSize *= sizeof(MachO::relocation_info); | |||
| 559 | BigSize += Dysymtab.extreloff; | |||
| 560 | if (BigSize > FileSize) | |||
| 561 | return malformedError("extreloff field plus nextrel field times sizeof" | |||
| 562 | "(struct relocation_info) of LC_DYSYMTAB command " + | |||
| 563 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 564 | "the file"); | |||
| 565 | if (Error Err = checkOverlappingElement(Elements, Dysymtab.extreloff, | |||
| 566 | Dysymtab.nextrel * | |||
| 567 | sizeof(MachO::relocation_info), | |||
| 568 | "external relocation table")) | |||
| 569 | return Err; | |||
| 570 | if (Dysymtab.locreloff > FileSize) | |||
| 571 | return malformedError("locreloff field of LC_DYSYMTAB command " + | |||
| 572 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 573 | "the file"); | |||
| 574 | BigSize = Dysymtab.nlocrel; | |||
| 575 | BigSize *= sizeof(MachO::relocation_info); | |||
| 576 | BigSize += Dysymtab.locreloff; | |||
| 577 | if (BigSize > FileSize) | |||
| 578 | return malformedError("locreloff field plus nlocrel field times sizeof" | |||
| 579 | "(struct relocation_info) of LC_DYSYMTAB command " + | |||
| 580 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 581 | "the file"); | |||
| 582 | if (Error Err = checkOverlappingElement(Elements, Dysymtab.locreloff, | |||
| 583 | Dysymtab.nlocrel * | |||
| 584 | sizeof(MachO::relocation_info), | |||
| 585 | "local relocation table")) | |||
| 586 | return Err; | |||
| 587 | *DysymtabLoadCmd = Load.Ptr; | |||
| 588 | return Error::success(); | |||
| 589 | } | |||
| 590 | ||||
| 591 | static Error checkLinkeditDataCommand(const MachOObjectFile &Obj, | |||
| 592 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 593 | uint32_t LoadCommandIndex, | |||
| 594 | const char **LoadCmd, const char *CmdName, | |||
| 595 | std::list<MachOElement> &Elements, | |||
| 596 | const char *ElementName) { | |||
| 597 | if (Load.C.cmdsize < sizeof(MachO::linkedit_data_command)) | |||
| 598 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 599 | CmdName + " cmdsize too small"); | |||
| 600 | if (*LoadCmd != nullptr) | |||
| 601 | return malformedError("more than one " + Twine(CmdName) + " command"); | |||
| 602 | auto LinkDataOrError = | |||
| 603 | getStructOrErr<MachO::linkedit_data_command>(Obj, Load.Ptr); | |||
| 604 | if (!LinkDataOrError) | |||
| 605 | return LinkDataOrError.takeError(); | |||
| 606 | MachO::linkedit_data_command LinkData = LinkDataOrError.get(); | |||
| 607 | if (LinkData.cmdsize != sizeof(MachO::linkedit_data_command)) | |||
| 608 | return malformedError(Twine(CmdName) + " command " + | |||
| 609 | Twine(LoadCommandIndex) + " has incorrect cmdsize"); | |||
| 610 | uint64_t FileSize = Obj.getData().size(); | |||
| 611 | if (LinkData.dataoff > FileSize) | |||
| 612 | return malformedError("dataoff field of " + Twine(CmdName) + " command " + | |||
| 613 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 614 | "the file"); | |||
| 615 | uint64_t BigSize = LinkData.dataoff; | |||
| 616 | BigSize += LinkData.datasize; | |||
| 617 | if (BigSize > FileSize) | |||
| 618 | return malformedError("dataoff field plus datasize field of " + | |||
| 619 | Twine(CmdName) + " command " + | |||
| 620 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 621 | "the file"); | |||
| 622 | if (Error Err = checkOverlappingElement(Elements, LinkData.dataoff, | |||
| 623 | LinkData.datasize, ElementName)) | |||
| 624 | return Err; | |||
| 625 | *LoadCmd = Load.Ptr; | |||
| 626 | return Error::success(); | |||
| 627 | } | |||
| 628 | ||||
| 629 | static Error checkDyldInfoCommand(const MachOObjectFile &Obj, | |||
| 630 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 631 | uint32_t LoadCommandIndex, | |||
| 632 | const char **LoadCmd, const char *CmdName, | |||
| 633 | std::list<MachOElement> &Elements) { | |||
| 634 | if (Load.C.cmdsize < sizeof(MachO::dyld_info_command)) | |||
| 635 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 636 | CmdName + " cmdsize too small"); | |||
| 637 | if (*LoadCmd != nullptr) | |||
| 638 | return malformedError("more than one LC_DYLD_INFO and or LC_DYLD_INFO_ONLY " | |||
| 639 | "command"); | |||
| 640 | auto DyldInfoOrErr = | |||
| 641 | getStructOrErr<MachO::dyld_info_command>(Obj, Load.Ptr); | |||
| 642 | if (!DyldInfoOrErr) | |||
| 643 | return DyldInfoOrErr.takeError(); | |||
| 644 | MachO::dyld_info_command DyldInfo = DyldInfoOrErr.get(); | |||
| 645 | if (DyldInfo.cmdsize != sizeof(MachO::dyld_info_command)) | |||
| 646 | return malformedError(Twine(CmdName) + " command " + | |||
| 647 | Twine(LoadCommandIndex) + " has incorrect cmdsize"); | |||
| 648 | uint64_t FileSize = Obj.getData().size(); | |||
| 649 | if (DyldInfo.rebase_off > FileSize) | |||
| 650 | return malformedError("rebase_off field of " + Twine(CmdName) + | |||
| 651 | " command " + Twine(LoadCommandIndex) + " extends " | |||
| 652 | "past the end of the file"); | |||
| 653 | uint64_t BigSize = DyldInfo.rebase_off; | |||
| 654 | BigSize += DyldInfo.rebase_size; | |||
| 655 | if (BigSize > FileSize) | |||
| 656 | return malformedError("rebase_off field plus rebase_size field of " + | |||
| 657 | Twine(CmdName) + " command " + | |||
| 658 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 659 | "the file"); | |||
| 660 | if (Error Err = checkOverlappingElement(Elements, DyldInfo.rebase_off, | |||
| 661 | DyldInfo.rebase_size, | |||
| 662 | "dyld rebase info")) | |||
| 663 | return Err; | |||
| 664 | if (DyldInfo.bind_off > FileSize) | |||
| 665 | return malformedError("bind_off field of " + Twine(CmdName) + | |||
| 666 | " command " + Twine(LoadCommandIndex) + " extends " | |||
| 667 | "past the end of the file"); | |||
| 668 | BigSize = DyldInfo.bind_off; | |||
| 669 | BigSize += DyldInfo.bind_size; | |||
| 670 | if (BigSize > FileSize) | |||
| 671 | return malformedError("bind_off field plus bind_size field of " + | |||
| 672 | Twine(CmdName) + " command " + | |||
| 673 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 674 | "the file"); | |||
| 675 | if (Error Err = checkOverlappingElement(Elements, DyldInfo.bind_off, | |||
| 676 | DyldInfo.bind_size, | |||
| 677 | "dyld bind info")) | |||
| 678 | return Err; | |||
| 679 | if (DyldInfo.weak_bind_off > FileSize) | |||
| 680 | return malformedError("weak_bind_off field of " + Twine(CmdName) + | |||
| 681 | " command " + Twine(LoadCommandIndex) + " extends " | |||
| 682 | "past the end of the file"); | |||
| 683 | BigSize = DyldInfo.weak_bind_off; | |||
| 684 | BigSize += DyldInfo.weak_bind_size; | |||
| 685 | if (BigSize > FileSize) | |||
| 686 | return malformedError("weak_bind_off field plus weak_bind_size field of " + | |||
| 687 | Twine(CmdName) + " command " + | |||
| 688 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 689 | "the file"); | |||
| 690 | if (Error Err = checkOverlappingElement(Elements, DyldInfo.weak_bind_off, | |||
| 691 | DyldInfo.weak_bind_size, | |||
| 692 | "dyld weak bind info")) | |||
| 693 | return Err; | |||
| 694 | if (DyldInfo.lazy_bind_off > FileSize) | |||
| 695 | return malformedError("lazy_bind_off field of " + Twine(CmdName) + | |||
| 696 | " command " + Twine(LoadCommandIndex) + " extends " | |||
| 697 | "past the end of the file"); | |||
| 698 | BigSize = DyldInfo.lazy_bind_off; | |||
| 699 | BigSize += DyldInfo.lazy_bind_size; | |||
| 700 | if (BigSize > FileSize) | |||
| 701 | return malformedError("lazy_bind_off field plus lazy_bind_size field of " + | |||
| 702 | Twine(CmdName) + " command " + | |||
| 703 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 704 | "the file"); | |||
| 705 | if (Error Err = checkOverlappingElement(Elements, DyldInfo.lazy_bind_off, | |||
| 706 | DyldInfo.lazy_bind_size, | |||
| 707 | "dyld lazy bind info")) | |||
| 708 | return Err; | |||
| 709 | if (DyldInfo.export_off > FileSize) | |||
| 710 | return malformedError("export_off field of " + Twine(CmdName) + | |||
| 711 | " command " + Twine(LoadCommandIndex) + " extends " | |||
| 712 | "past the end of the file"); | |||
| 713 | BigSize = DyldInfo.export_off; | |||
| 714 | BigSize += DyldInfo.export_size; | |||
| 715 | if (BigSize > FileSize) | |||
| 716 | return malformedError("export_off field plus export_size field of " + | |||
| 717 | Twine(CmdName) + " command " + | |||
| 718 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 719 | "the file"); | |||
| 720 | if (Error Err = checkOverlappingElement(Elements, DyldInfo.export_off, | |||
| 721 | DyldInfo.export_size, | |||
| 722 | "dyld export info")) | |||
| 723 | return Err; | |||
| 724 | *LoadCmd = Load.Ptr; | |||
| 725 | return Error::success(); | |||
| 726 | } | |||
| 727 | ||||
| 728 | static Error checkDylibCommand(const MachOObjectFile &Obj, | |||
| 729 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 730 | uint32_t LoadCommandIndex, const char *CmdName) { | |||
| 731 | if (Load.C.cmdsize < sizeof(MachO::dylib_command)) | |||
| 732 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 733 | CmdName + " cmdsize too small"); | |||
| 734 | auto CommandOrErr = getStructOrErr<MachO::dylib_command>(Obj, Load.Ptr); | |||
| 735 | if (!CommandOrErr) | |||
| 736 | return CommandOrErr.takeError(); | |||
| 737 | MachO::dylib_command D = CommandOrErr.get(); | |||
| 738 | if (D.dylib.name < sizeof(MachO::dylib_command)) | |||
| 739 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 740 | CmdName + " name.offset field too small, not past " | |||
| 741 | "the end of the dylib_command struct"); | |||
| 742 | if (D.dylib.name >= D.cmdsize) | |||
| 743 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 744 | CmdName + " name.offset field extends past the end " | |||
| 745 | "of the load command"); | |||
| 746 | // Make sure there is a null between the starting offset of the name and | |||
| 747 | // the end of the load command. | |||
| 748 | uint32_t i; | |||
| 749 | const char *P = (const char *)Load.Ptr; | |||
| 750 | for (i = D.dylib.name; i < D.cmdsize; i++) | |||
| 751 | if (P[i] == '\0') | |||
| 752 | break; | |||
| 753 | if (i >= D.cmdsize) | |||
| 754 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 755 | CmdName + " library name extends past the end of the " | |||
| 756 | "load command"); | |||
| 757 | return Error::success(); | |||
| 758 | } | |||
| 759 | ||||
| 760 | static Error checkDylibIdCommand(const MachOObjectFile &Obj, | |||
| 761 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 762 | uint32_t LoadCommandIndex, | |||
| 763 | const char **LoadCmd) { | |||
| 764 | if (Error Err = checkDylibCommand(Obj, Load, LoadCommandIndex, | |||
| 765 | "LC_ID_DYLIB")) | |||
| 766 | return Err; | |||
| 767 | if (*LoadCmd != nullptr) | |||
| 768 | return malformedError("more than one LC_ID_DYLIB command"); | |||
| 769 | if (Obj.getHeader().filetype != MachO::MH_DYLIB && | |||
| 770 | Obj.getHeader().filetype != MachO::MH_DYLIB_STUB) | |||
| 771 | return malformedError("LC_ID_DYLIB load command in non-dynamic library " | |||
| 772 | "file type"); | |||
| 773 | *LoadCmd = Load.Ptr; | |||
| 774 | return Error::success(); | |||
| 775 | } | |||
| 776 | ||||
| 777 | static Error checkDyldCommand(const MachOObjectFile &Obj, | |||
| 778 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 779 | uint32_t LoadCommandIndex, const char *CmdName) { | |||
| 780 | if (Load.C.cmdsize < sizeof(MachO::dylinker_command)) | |||
| 781 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 782 | CmdName + " cmdsize too small"); | |||
| 783 | auto CommandOrErr = getStructOrErr<MachO::dylinker_command>(Obj, Load.Ptr); | |||
| 784 | if (!CommandOrErr) | |||
| 785 | return CommandOrErr.takeError(); | |||
| 786 | MachO::dylinker_command D = CommandOrErr.get(); | |||
| 787 | if (D.name < sizeof(MachO::dylinker_command)) | |||
| 788 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 789 | CmdName + " name.offset field too small, not past " | |||
| 790 | "the end of the dylinker_command struct"); | |||
| 791 | if (D.name >= D.cmdsize) | |||
| 792 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 793 | CmdName + " name.offset field extends past the end " | |||
| 794 | "of the load command"); | |||
| 795 | // Make sure there is a null between the starting offset of the name and | |||
| 796 | // the end of the load command. | |||
| 797 | uint32_t i; | |||
| 798 | const char *P = (const char *)Load.Ptr; | |||
| 799 | for (i = D.name; i < D.cmdsize; i++) | |||
| 800 | if (P[i] == '\0') | |||
| 801 | break; | |||
| 802 | if (i >= D.cmdsize) | |||
| 803 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 804 | CmdName + " dyld name extends past the end of the " | |||
| 805 | "load command"); | |||
| 806 | return Error::success(); | |||
| 807 | } | |||
| 808 | ||||
| 809 | static Error checkVersCommand(const MachOObjectFile &Obj, | |||
| 810 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 811 | uint32_t LoadCommandIndex, | |||
| 812 | const char **LoadCmd, const char *CmdName) { | |||
| 813 | if (Load.C.cmdsize != sizeof(MachO::version_min_command)) | |||
| 814 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 815 | CmdName + " has incorrect cmdsize"); | |||
| 816 | if (*LoadCmd != nullptr) | |||
| 817 | return malformedError("more than one LC_VERSION_MIN_MACOSX, " | |||
| 818 | "LC_VERSION_MIN_IPHONEOS, LC_VERSION_MIN_TVOS or " | |||
| 819 | "LC_VERSION_MIN_WATCHOS command"); | |||
| 820 | *LoadCmd = Load.Ptr; | |||
| 821 | return Error::success(); | |||
| 822 | } | |||
| 823 | ||||
| 824 | static Error checkNoteCommand(const MachOObjectFile &Obj, | |||
| 825 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 826 | uint32_t LoadCommandIndex, | |||
| 827 | std::list<MachOElement> &Elements) { | |||
| 828 | if (Load.C.cmdsize != sizeof(MachO::note_command)) | |||
| 829 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 830 | " LC_NOTE has incorrect cmdsize"); | |||
| 831 | auto NoteCmdOrErr = getStructOrErr<MachO::note_command>(Obj, Load.Ptr); | |||
| 832 | if (!NoteCmdOrErr) | |||
| 833 | return NoteCmdOrErr.takeError(); | |||
| 834 | MachO::note_command Nt = NoteCmdOrErr.get(); | |||
| 835 | uint64_t FileSize = Obj.getData().size(); | |||
| 836 | if (Nt.offset > FileSize) | |||
| 837 | return malformedError("offset field of LC_NOTE command " + | |||
| 838 | Twine(LoadCommandIndex) + " extends " | |||
| 839 | "past the end of the file"); | |||
| 840 | uint64_t BigSize = Nt.offset; | |||
| 841 | BigSize += Nt.size; | |||
| 842 | if (BigSize > FileSize) | |||
| 843 | return malformedError("size field plus offset field of LC_NOTE command " + | |||
| 844 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 845 | "the file"); | |||
| 846 | if (Error Err = checkOverlappingElement(Elements, Nt.offset, Nt.size, | |||
| 847 | "LC_NOTE data")) | |||
| 848 | return Err; | |||
| 849 | return Error::success(); | |||
| 850 | } | |||
| 851 | ||||
| 852 | static Error | |||
| 853 | parseBuildVersionCommand(const MachOObjectFile &Obj, | |||
| 854 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 855 | SmallVectorImpl<const char*> &BuildTools, | |||
| 856 | uint32_t LoadCommandIndex) { | |||
| 857 | auto BVCOrErr = | |||
| 858 | getStructOrErr<MachO::build_version_command>(Obj, Load.Ptr); | |||
| 859 | if (!BVCOrErr) | |||
| 860 | return BVCOrErr.takeError(); | |||
| 861 | MachO::build_version_command BVC = BVCOrErr.get(); | |||
| 862 | if (Load.C.cmdsize != | |||
| 863 | sizeof(MachO::build_version_command) + | |||
| 864 | BVC.ntools * sizeof(MachO::build_tool_version)) | |||
| 865 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 866 | " LC_BUILD_VERSION_COMMAND has incorrect cmdsize"); | |||
| 867 | ||||
| 868 | auto Start = Load.Ptr + sizeof(MachO::build_version_command); | |||
| 869 | BuildTools.resize(BVC.ntools); | |||
| 870 | for (unsigned i = 0; i < BVC.ntools; ++i) | |||
| 871 | BuildTools[i] = Start + i * sizeof(MachO::build_tool_version); | |||
| 872 | ||||
| 873 | return Error::success(); | |||
| 874 | } | |||
| 875 | ||||
| 876 | static Error checkRpathCommand(const MachOObjectFile &Obj, | |||
| 877 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 878 | uint32_t LoadCommandIndex) { | |||
| 879 | if (Load.C.cmdsize < sizeof(MachO::rpath_command)) | |||
| 880 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 881 | " LC_RPATH cmdsize too small"); | |||
| 882 | auto ROrErr = getStructOrErr<MachO::rpath_command>(Obj, Load.Ptr); | |||
| 883 | if (!ROrErr) | |||
| 884 | return ROrErr.takeError(); | |||
| 885 | MachO::rpath_command R = ROrErr.get(); | |||
| 886 | if (R.path < sizeof(MachO::rpath_command)) | |||
| 887 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 888 | " LC_RPATH path.offset field too small, not past " | |||
| 889 | "the end of the rpath_command struct"); | |||
| 890 | if (R.path >= R.cmdsize) | |||
| 891 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 892 | " LC_RPATH path.offset field extends past the end " | |||
| 893 | "of the load command"); | |||
| 894 | // Make sure there is a null between the starting offset of the path and | |||
| 895 | // the end of the load command. | |||
| 896 | uint32_t i; | |||
| 897 | const char *P = (const char *)Load.Ptr; | |||
| 898 | for (i = R.path; i < R.cmdsize; i++) | |||
| 899 | if (P[i] == '\0') | |||
| 900 | break; | |||
| 901 | if (i >= R.cmdsize) | |||
| 902 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 903 | " LC_RPATH library name extends past the end of the " | |||
| 904 | "load command"); | |||
| 905 | return Error::success(); | |||
| 906 | } | |||
| 907 | ||||
| 908 | static Error checkEncryptCommand(const MachOObjectFile &Obj, | |||
| 909 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 910 | uint32_t LoadCommandIndex, | |||
| 911 | uint64_t cryptoff, uint64_t cryptsize, | |||
| 912 | const char **LoadCmd, const char *CmdName) { | |||
| 913 | if (*LoadCmd != nullptr) | |||
| 914 | return malformedError("more than one LC_ENCRYPTION_INFO and or " | |||
| 915 | "LC_ENCRYPTION_INFO_64 command"); | |||
| 916 | uint64_t FileSize = Obj.getData().size(); | |||
| 917 | if (cryptoff > FileSize) | |||
| 918 | return malformedError("cryptoff field of " + Twine(CmdName) + | |||
| 919 | " command " + Twine(LoadCommandIndex) + " extends " | |||
| 920 | "past the end of the file"); | |||
| 921 | uint64_t BigSize = cryptoff; | |||
| 922 | BigSize += cryptsize; | |||
| 923 | if (BigSize > FileSize) | |||
| 924 | return malformedError("cryptoff field plus cryptsize field of " + | |||
| 925 | Twine(CmdName) + " command " + | |||
| 926 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 927 | "the file"); | |||
| 928 | *LoadCmd = Load.Ptr; | |||
| 929 | return Error::success(); | |||
| 930 | } | |||
| 931 | ||||
| 932 | static Error checkLinkerOptCommand(const MachOObjectFile &Obj, | |||
| 933 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 934 | uint32_t LoadCommandIndex) { | |||
| 935 | if (Load.C.cmdsize < sizeof(MachO::linker_option_command)) | |||
| 936 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 937 | " LC_LINKER_OPTION cmdsize too small"); | |||
| 938 | auto LinkOptionOrErr = | |||
| 939 | getStructOrErr<MachO::linker_option_command>(Obj, Load.Ptr); | |||
| 940 | if (!LinkOptionOrErr) | |||
| 941 | return LinkOptionOrErr.takeError(); | |||
| 942 | MachO::linker_option_command L = LinkOptionOrErr.get(); | |||
| 943 | // Make sure the count of strings is correct. | |||
| 944 | const char *string = (const char *)Load.Ptr + | |||
| 945 | sizeof(struct MachO::linker_option_command); | |||
| 946 | uint32_t left = L.cmdsize - sizeof(struct MachO::linker_option_command); | |||
| 947 | uint32_t i = 0; | |||
| 948 | while (left > 0) { | |||
| 949 | while (*string == '\0' && left > 0) { | |||
| 950 | string++; | |||
| 951 | left--; | |||
| 952 | } | |||
| 953 | if (left > 0) { | |||
| 954 | i++; | |||
| 955 | uint32_t NullPos = StringRef(string, left).find('\0'); | |||
| 956 | if (0xffffffff == NullPos) | |||
| 957 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 958 | " LC_LINKER_OPTION string #" + Twine(i) + | |||
| 959 | " is not NULL terminated"); | |||
| 960 | uint32_t len = std::min(NullPos, left) + 1; | |||
| 961 | string += len; | |||
| 962 | left -= len; | |||
| 963 | } | |||
| 964 | } | |||
| 965 | if (L.count != i) | |||
| 966 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 967 | " LC_LINKER_OPTION string count " + Twine(L.count) + | |||
| 968 | " does not match number of strings"); | |||
| 969 | return Error::success(); | |||
| 970 | } | |||
| 971 | ||||
| 972 | static Error checkSubCommand(const MachOObjectFile &Obj, | |||
| 973 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 974 | uint32_t LoadCommandIndex, const char *CmdName, | |||
| 975 | size_t SizeOfCmd, const char *CmdStructName, | |||
| 976 | uint32_t PathOffset, const char *PathFieldName) { | |||
| 977 | if (PathOffset < SizeOfCmd) | |||
| 978 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 979 | CmdName + " " + PathFieldName + ".offset field too " | |||
| 980 | "small, not past the end of the " + CmdStructName); | |||
| 981 | if (PathOffset >= Load.C.cmdsize) | |||
| 982 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 983 | CmdName + " " + PathFieldName + ".offset field " | |||
| 984 | "extends past the end of the load command"); | |||
| 985 | // Make sure there is a null between the starting offset of the path and | |||
| 986 | // the end of the load command. | |||
| 987 | uint32_t i; | |||
| 988 | const char *P = (const char *)Load.Ptr; | |||
| 989 | for (i = PathOffset; i < Load.C.cmdsize; i++) | |||
| 990 | if (P[i] == '\0') | |||
| 991 | break; | |||
| 992 | if (i >= Load.C.cmdsize) | |||
| 993 | return malformedError("load command " + Twine(LoadCommandIndex) + " " + | |||
| 994 | CmdName + " " + PathFieldName + " name extends past " | |||
| 995 | "the end of the load command"); | |||
| 996 | return Error::success(); | |||
| 997 | } | |||
| 998 | ||||
| 999 | static Error checkThreadCommand(const MachOObjectFile &Obj, | |||
| 1000 | const MachOObjectFile::LoadCommandInfo &Load, | |||
| 1001 | uint32_t LoadCommandIndex, | |||
| 1002 | const char *CmdName) { | |||
| 1003 | if (Load.C.cmdsize < sizeof(MachO::thread_command)) | |||
| 1004 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1005 | CmdName + " cmdsize too small"); | |||
| 1006 | auto ThreadCommandOrErr = | |||
| 1007 | getStructOrErr<MachO::thread_command>(Obj, Load.Ptr); | |||
| 1008 | if (!ThreadCommandOrErr) | |||
| 1009 | return ThreadCommandOrErr.takeError(); | |||
| 1010 | MachO::thread_command T = ThreadCommandOrErr.get(); | |||
| 1011 | const char *state = Load.Ptr + sizeof(MachO::thread_command); | |||
| 1012 | const char *end = Load.Ptr + T.cmdsize; | |||
| 1013 | uint32_t nflavor = 0; | |||
| 1014 | uint32_t cputype = getCPUType(Obj); | |||
| 1015 | while (state < end) { | |||
| 1016 | if(state + sizeof(uint32_t) > end) | |||
| 1017 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1018 | "flavor in " + CmdName + " extends past end of " | |||
| 1019 | "command"); | |||
| 1020 | uint32_t flavor; | |||
| 1021 | memcpy(&flavor, state, sizeof(uint32_t)); | |||
| 1022 | if (Obj.isLittleEndian() != sys::IsLittleEndianHost) | |||
| 1023 | sys::swapByteOrder(flavor); | |||
| 1024 | state += sizeof(uint32_t); | |||
| 1025 | ||||
| 1026 | if(state + sizeof(uint32_t) > end) | |||
| 1027 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1028 | " count in " + CmdName + " extends past end of " | |||
| 1029 | "command"); | |||
| 1030 | uint32_t count; | |||
| 1031 | memcpy(&count, state, sizeof(uint32_t)); | |||
| 1032 | if (Obj.isLittleEndian() != sys::IsLittleEndianHost) | |||
| 1033 | sys::swapByteOrder(count); | |||
| 1034 | state += sizeof(uint32_t); | |||
| 1035 | ||||
| 1036 | if (cputype == MachO::CPU_TYPE_I386) { | |||
| 1037 | if (flavor == MachO::x86_THREAD_STATE32) { | |||
| 1038 | if (count != MachO::x86_THREAD_STATE32_COUNT) | |||
| 1039 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1040 | " count not x86_THREAD_STATE32_COUNT for " | |||
| 1041 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1042 | "a x86_THREAD_STATE32 flavor in " + CmdName + | |||
| 1043 | " command"); | |||
| 1044 | if (state + sizeof(MachO::x86_thread_state32_t) > end) | |||
| 1045 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1046 | " x86_THREAD_STATE32 extends past end of " | |||
| 1047 | "command in " + CmdName + " command"); | |||
| 1048 | state += sizeof(MachO::x86_thread_state32_t); | |||
| 1049 | } else { | |||
| 1050 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1051 | " unknown flavor (" + Twine(flavor) + ") for " | |||
| 1052 | "flavor number " + Twine(nflavor) + " in " + | |||
| 1053 | CmdName + " command"); | |||
| 1054 | } | |||
| 1055 | } else if (cputype == MachO::CPU_TYPE_X86_64) { | |||
| 1056 | if (flavor == MachO::x86_THREAD_STATE) { | |||
| 1057 | if (count != MachO::x86_THREAD_STATE_COUNT) | |||
| 1058 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1059 | " count not x86_THREAD_STATE_COUNT for " | |||
| 1060 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1061 | "a x86_THREAD_STATE flavor in " + CmdName + | |||
| 1062 | " command"); | |||
| 1063 | if (state + sizeof(MachO::x86_thread_state_t) > end) | |||
| 1064 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1065 | " x86_THREAD_STATE extends past end of " | |||
| 1066 | "command in " + CmdName + " command"); | |||
| 1067 | state += sizeof(MachO::x86_thread_state_t); | |||
| 1068 | } else if (flavor == MachO::x86_FLOAT_STATE) { | |||
| 1069 | if (count != MachO::x86_FLOAT_STATE_COUNT) | |||
| 1070 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1071 | " count not x86_FLOAT_STATE_COUNT for " | |||
| 1072 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1073 | "a x86_FLOAT_STATE flavor in " + CmdName + | |||
| 1074 | " command"); | |||
| 1075 | if (state + sizeof(MachO::x86_float_state_t) > end) | |||
| 1076 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1077 | " x86_FLOAT_STATE extends past end of " | |||
| 1078 | "command in " + CmdName + " command"); | |||
| 1079 | state += sizeof(MachO::x86_float_state_t); | |||
| 1080 | } else if (flavor == MachO::x86_EXCEPTION_STATE) { | |||
| 1081 | if (count != MachO::x86_EXCEPTION_STATE_COUNT) | |||
| 1082 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1083 | " count not x86_EXCEPTION_STATE_COUNT for " | |||
| 1084 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1085 | "a x86_EXCEPTION_STATE flavor in " + CmdName + | |||
| 1086 | " command"); | |||
| 1087 | if (state + sizeof(MachO::x86_exception_state_t) > end) | |||
| 1088 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1089 | " x86_EXCEPTION_STATE extends past end of " | |||
| 1090 | "command in " + CmdName + " command"); | |||
| 1091 | state += sizeof(MachO::x86_exception_state_t); | |||
| 1092 | } else if (flavor == MachO::x86_THREAD_STATE64) { | |||
| 1093 | if (count != MachO::x86_THREAD_STATE64_COUNT) | |||
| 1094 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1095 | " count not x86_THREAD_STATE64_COUNT for " | |||
| 1096 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1097 | "a x86_THREAD_STATE64 flavor in " + CmdName + | |||
| 1098 | " command"); | |||
| 1099 | if (state + sizeof(MachO::x86_thread_state64_t) > end) | |||
| 1100 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1101 | " x86_THREAD_STATE64 extends past end of " | |||
| 1102 | "command in " + CmdName + " command"); | |||
| 1103 | state += sizeof(MachO::x86_thread_state64_t); | |||
| 1104 | } else if (flavor == MachO::x86_EXCEPTION_STATE64) { | |||
| 1105 | if (count != MachO::x86_EXCEPTION_STATE64_COUNT) | |||
| 1106 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1107 | " count not x86_EXCEPTION_STATE64_COUNT for " | |||
| 1108 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1109 | "a x86_EXCEPTION_STATE64 flavor in " + CmdName + | |||
| 1110 | " command"); | |||
| 1111 | if (state + sizeof(MachO::x86_exception_state64_t) > end) | |||
| 1112 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1113 | " x86_EXCEPTION_STATE64 extends past end of " | |||
| 1114 | "command in " + CmdName + " command"); | |||
| 1115 | state += sizeof(MachO::x86_exception_state64_t); | |||
| 1116 | } else { | |||
| 1117 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1118 | " unknown flavor (" + Twine(flavor) + ") for " | |||
| 1119 | "flavor number " + Twine(nflavor) + " in " + | |||
| 1120 | CmdName + " command"); | |||
| 1121 | } | |||
| 1122 | } else if (cputype == MachO::CPU_TYPE_ARM) { | |||
| 1123 | if (flavor == MachO::ARM_THREAD_STATE) { | |||
| 1124 | if (count != MachO::ARM_THREAD_STATE_COUNT) | |||
| 1125 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1126 | " count not ARM_THREAD_STATE_COUNT for " | |||
| 1127 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1128 | "a ARM_THREAD_STATE flavor in " + CmdName + | |||
| 1129 | " command"); | |||
| 1130 | if (state + sizeof(MachO::arm_thread_state32_t) > end) | |||
| 1131 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1132 | " ARM_THREAD_STATE extends past end of " | |||
| 1133 | "command in " + CmdName + " command"); | |||
| 1134 | state += sizeof(MachO::arm_thread_state32_t); | |||
| 1135 | } else { | |||
| 1136 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1137 | " unknown flavor (" + Twine(flavor) + ") for " | |||
| 1138 | "flavor number " + Twine(nflavor) + " in " + | |||
| 1139 | CmdName + " command"); | |||
| 1140 | } | |||
| 1141 | } else if (cputype == MachO::CPU_TYPE_ARM64 || | |||
| 1142 | cputype == MachO::CPU_TYPE_ARM64_32) { | |||
| 1143 | if (flavor == MachO::ARM_THREAD_STATE64) { | |||
| 1144 | if (count != MachO::ARM_THREAD_STATE64_COUNT) | |||
| 1145 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1146 | " count not ARM_THREAD_STATE64_COUNT for " | |||
| 1147 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1148 | "a ARM_THREAD_STATE64 flavor in " + CmdName + | |||
| 1149 | " command"); | |||
| 1150 | if (state + sizeof(MachO::arm_thread_state64_t) > end) | |||
| 1151 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1152 | " ARM_THREAD_STATE64 extends past end of " | |||
| 1153 | "command in " + CmdName + " command"); | |||
| 1154 | state += sizeof(MachO::arm_thread_state64_t); | |||
| 1155 | } else { | |||
| 1156 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1157 | " unknown flavor (" + Twine(flavor) + ") for " | |||
| 1158 | "flavor number " + Twine(nflavor) + " in " + | |||
| 1159 | CmdName + " command"); | |||
| 1160 | } | |||
| 1161 | } else if (cputype == MachO::CPU_TYPE_POWERPC) { | |||
| 1162 | if (flavor == MachO::PPC_THREAD_STATE) { | |||
| 1163 | if (count != MachO::PPC_THREAD_STATE_COUNT) | |||
| 1164 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1165 | " count not PPC_THREAD_STATE_COUNT for " | |||
| 1166 | "flavor number " + Twine(nflavor) + " which is " | |||
| 1167 | "a PPC_THREAD_STATE flavor in " + CmdName + | |||
| 1168 | " command"); | |||
| 1169 | if (state + sizeof(MachO::ppc_thread_state32_t) > end) | |||
| 1170 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1171 | " PPC_THREAD_STATE extends past end of " | |||
| 1172 | "command in " + CmdName + " command"); | |||
| 1173 | state += sizeof(MachO::ppc_thread_state32_t); | |||
| 1174 | } else { | |||
| 1175 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1176 | " unknown flavor (" + Twine(flavor) + ") for " | |||
| 1177 | "flavor number " + Twine(nflavor) + " in " + | |||
| 1178 | CmdName + " command"); | |||
| 1179 | } | |||
| 1180 | } else { | |||
| 1181 | return malformedError("unknown cputype (" + Twine(cputype) + ") load " | |||
| 1182 | "command " + Twine(LoadCommandIndex) + " for " + | |||
| 1183 | CmdName + " command can't be checked"); | |||
| 1184 | } | |||
| 1185 | nflavor++; | |||
| 1186 | } | |||
| 1187 | return Error::success(); | |||
| 1188 | } | |||
| 1189 | ||||
| 1190 | static Error checkTwoLevelHintsCommand(const MachOObjectFile &Obj, | |||
| 1191 | const MachOObjectFile::LoadCommandInfo | |||
| 1192 | &Load, | |||
| 1193 | uint32_t LoadCommandIndex, | |||
| 1194 | const char **LoadCmd, | |||
| 1195 | std::list<MachOElement> &Elements) { | |||
| 1196 | if (Load.C.cmdsize != sizeof(MachO::twolevel_hints_command)) | |||
| 1197 | return malformedError("load command " + Twine(LoadCommandIndex) + | |||
| 1198 | " LC_TWOLEVEL_HINTS has incorrect cmdsize"); | |||
| 1199 | if (*LoadCmd != nullptr) | |||
| 1200 | return malformedError("more than one LC_TWOLEVEL_HINTS command"); | |||
| 1201 | auto HintsOrErr = getStructOrErr<MachO::twolevel_hints_command>(Obj, Load.Ptr); | |||
| 1202 | if(!HintsOrErr) | |||
| 1203 | return HintsOrErr.takeError(); | |||
| 1204 | MachO::twolevel_hints_command Hints = HintsOrErr.get(); | |||
| 1205 | uint64_t FileSize = Obj.getData().size(); | |||
| 1206 | if (Hints.offset > FileSize) | |||
| 1207 | return malformedError("offset field of LC_TWOLEVEL_HINTS command " + | |||
| 1208 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 1209 | "the file"); | |||
| 1210 | uint64_t BigSize = Hints.nhints; | |||
| 1211 | BigSize *= sizeof(MachO::twolevel_hint); | |||
| 1212 | BigSize += Hints.offset; | |||
| 1213 | if (BigSize > FileSize) | |||
| 1214 | return malformedError("offset field plus nhints times sizeof(struct " | |||
| 1215 | "twolevel_hint) field of LC_TWOLEVEL_HINTS command " + | |||
| 1216 | Twine(LoadCommandIndex) + " extends past the end of " | |||
| 1217 | "the file"); | |||
| 1218 | if (Error Err = checkOverlappingElement(Elements, Hints.offset, Hints.nhints * | |||
| 1219 | sizeof(MachO::twolevel_hint), | |||
| 1220 | "two level hints")) | |||
| 1221 | return Err; | |||
| 1222 | *LoadCmd = Load.Ptr; | |||
| 1223 | return Error::success(); | |||
| 1224 | } | |||
| 1225 | ||||
| 1226 | // Returns true if the libObject code does not support the load command and its | |||
| 1227 | // contents. The cmd value it is treated as an unknown load command but with | |||
| 1228 | // an error message that says the cmd value is obsolete. | |||
| 1229 | static bool isLoadCommandObsolete(uint32_t cmd) { | |||
| 1230 | if (cmd == MachO::LC_SYMSEG || | |||
| 1231 | cmd == MachO::LC_LOADFVMLIB || | |||
| 1232 | cmd == MachO::LC_IDFVMLIB || | |||
| 1233 | cmd == MachO::LC_IDENT || | |||
| 1234 | cmd == MachO::LC_FVMFILE || | |||
| 1235 | cmd == MachO::LC_PREPAGE || | |||
| 1236 | cmd == MachO::LC_PREBOUND_DYLIB || | |||
| 1237 | cmd == MachO::LC_TWOLEVEL_HINTS || | |||
| 1238 | cmd == MachO::LC_PREBIND_CKSUM) | |||
| 1239 | return true; | |||
| 1240 | return false; | |||
| 1241 | } | |||
| 1242 | ||||
| 1243 | Expected<std::unique_ptr<MachOObjectFile>> | |||
| 1244 | MachOObjectFile::create(MemoryBufferRef Object, bool IsLittleEndian, | |||
| 1245 | bool Is64Bits, uint32_t UniversalCputype, | |||
| 1246 | uint32_t UniversalIndex) { | |||
| 1247 | Error Err = Error::success(); | |||
| 1248 | std::unique_ptr<MachOObjectFile> Obj( | |||
| 1249 | new MachOObjectFile(std::move(Object), IsLittleEndian, | |||
| 1250 | Is64Bits, Err, UniversalCputype, | |||
| 1251 | UniversalIndex)); | |||
| 1252 | if (Err) | |||
| 1253 | return std::move(Err); | |||
| 1254 | return std::move(Obj); | |||
| 1255 | } | |||
| 1256 | ||||
| 1257 | MachOObjectFile::MachOObjectFile(MemoryBufferRef Object, bool IsLittleEndian, | |||
| 1258 | bool Is64bits, Error &Err, | |||
| 1259 | uint32_t UniversalCputype, | |||
| 1260 | uint32_t UniversalIndex) | |||
| 1261 | : ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object) { | |||
| 1262 | ErrorAsOutParameter ErrAsOutParam(&Err); | |||
| 1263 | uint64_t SizeOfHeaders; | |||
| 1264 | uint32_t cputype; | |||
| 1265 | if (is64Bit()) { | |||
| 1266 | parseHeader(*this, Header64, Err); | |||
| 1267 | SizeOfHeaders = sizeof(MachO::mach_header_64); | |||
| 1268 | cputype = Header64.cputype; | |||
| 1269 | } else { | |||
| 1270 | parseHeader(*this, Header, Err); | |||
| 1271 | SizeOfHeaders = sizeof(MachO::mach_header); | |||
| 1272 | cputype = Header.cputype; | |||
| 1273 | } | |||
| 1274 | if (Err) | |||
| 1275 | return; | |||
| 1276 | SizeOfHeaders += getHeader().sizeofcmds; | |||
| 1277 | if (getData().data() + SizeOfHeaders > getData().end()) { | |||
| 1278 | Err = malformedError("load commands extend past the end of the file"); | |||
| 1279 | return; | |||
| 1280 | } | |||
| 1281 | if (UniversalCputype != 0 && cputype != UniversalCputype) { | |||
| 1282 | Err = malformedError("universal header architecture: " + | |||
| 1283 | Twine(UniversalIndex) + "'s cputype does not match " | |||
| 1284 | "object file's mach header"); | |||
| 1285 | return; | |||
| 1286 | } | |||
| 1287 | std::list<MachOElement> Elements; | |||
| 1288 | Elements.push_back({0, SizeOfHeaders, "Mach-O headers"}); | |||
| 1289 | ||||
| 1290 | uint32_t LoadCommandCount = getHeader().ncmds; | |||
| 1291 | LoadCommandInfo Load; | |||
| 1292 | if (LoadCommandCount != 0) { | |||
| 1293 | if (auto LoadOrErr = getFirstLoadCommandInfo(*this)) | |||
| 1294 | Load = *LoadOrErr; | |||
| 1295 | else { | |||
| 1296 | Err = LoadOrErr.takeError(); | |||
| 1297 | return; | |||
| 1298 | } | |||
| 1299 | } | |||
| 1300 | ||||
| 1301 | const char *DyldIdLoadCmd = nullptr; | |||
| 1302 | const char *FuncStartsLoadCmd = nullptr; | |||
| 1303 | const char *SplitInfoLoadCmd = nullptr; | |||
| 1304 | const char *CodeSignDrsLoadCmd = nullptr; | |||
| 1305 | const char *CodeSignLoadCmd = nullptr; | |||
| 1306 | const char *VersLoadCmd = nullptr; | |||
| 1307 | const char *SourceLoadCmd = nullptr; | |||
| 1308 | const char *EntryPointLoadCmd = nullptr; | |||
| 1309 | const char *EncryptLoadCmd = nullptr; | |||
| 1310 | const char *RoutinesLoadCmd = nullptr; | |||
| 1311 | const char *UnixThreadLoadCmd = nullptr; | |||
| 1312 | const char *TwoLevelHintsLoadCmd = nullptr; | |||
| 1313 | for (unsigned I = 0; I < LoadCommandCount; ++I) { | |||
| 1314 | if (is64Bit()) { | |||
| 1315 | if (Load.C.cmdsize % 8 != 0) { | |||
| 1316 | // We have a hack here to allow 64-bit Mach-O core files to have | |||
| 1317 | // LC_THREAD commands that are only a multiple of 4 and not 8 to be | |||
| 1318 | // allowed since the macOS kernel produces them. | |||
| 1319 | if (getHeader().filetype != MachO::MH_CORE || | |||
| 1320 | Load.C.cmd != MachO::LC_THREAD || Load.C.cmdsize % 4) { | |||
| 1321 | Err = malformedError("load command " + Twine(I) + " cmdsize not a " | |||
| 1322 | "multiple of 8"); | |||
| 1323 | return; | |||
| 1324 | } | |||
| 1325 | } | |||
| 1326 | } else { | |||
| 1327 | if (Load.C.cmdsize % 4 != 0) { | |||
| 1328 | Err = malformedError("load command " + Twine(I) + " cmdsize not a " | |||
| 1329 | "multiple of 4"); | |||
| 1330 | return; | |||
| 1331 | } | |||
| 1332 | } | |||
| 1333 | LoadCommands.push_back(Load); | |||
| 1334 | if (Load.C.cmd == MachO::LC_SYMTAB) { | |||
| 1335 | if ((Err = checkSymtabCommand(*this, Load, I, &SymtabLoadCmd, Elements))) | |||
| 1336 | return; | |||
| 1337 | } else if (Load.C.cmd == MachO::LC_DYSYMTAB) { | |||
| 1338 | if ((Err = checkDysymtabCommand(*this, Load, I, &DysymtabLoadCmd, | |||
| 1339 | Elements))) | |||
| 1340 | return; | |||
| 1341 | } else if (Load.C.cmd == MachO::LC_DATA_IN_CODE) { | |||
| 1342 | if ((Err = checkLinkeditDataCommand(*this, Load, I, &DataInCodeLoadCmd, | |||
| 1343 | "LC_DATA_IN_CODE", Elements, | |||
| 1344 | "data in code info"))) | |||
| 1345 | return; | |||
| 1346 | } else if (Load.C.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT) { | |||
| 1347 | if ((Err = checkLinkeditDataCommand(*this, Load, I, &LinkOptHintsLoadCmd, | |||
| 1348 | "LC_LINKER_OPTIMIZATION_HINT", | |||
| 1349 | Elements, "linker optimization " | |||
| 1350 | "hints"))) | |||
| 1351 | return; | |||
| 1352 | } else if (Load.C.cmd == MachO::LC_FUNCTION_STARTS) { | |||
| 1353 | if ((Err = checkLinkeditDataCommand(*this, Load, I, &FuncStartsLoadCmd, | |||
| 1354 | "LC_FUNCTION_STARTS", Elements, | |||
| 1355 | "function starts data"))) | |||
| 1356 | return; | |||
| 1357 | } else if (Load.C.cmd == MachO::LC_SEGMENT_SPLIT_INFO) { | |||
| 1358 | if ((Err = checkLinkeditDataCommand(*this, Load, I, &SplitInfoLoadCmd, | |||
| 1359 | "LC_SEGMENT_SPLIT_INFO", Elements, | |||
| 1360 | "split info data"))) | |||
| 1361 | return; | |||
| 1362 | } else if (Load.C.cmd == MachO::LC_DYLIB_CODE_SIGN_DRS) { | |||
| 1363 | if ((Err = checkLinkeditDataCommand(*this, Load, I, &CodeSignDrsLoadCmd, | |||
| 1364 | "LC_DYLIB_CODE_SIGN_DRS", Elements, | |||
| 1365 | "code signing RDs data"))) | |||
| 1366 | return; | |||
| 1367 | } else if (Load.C.cmd == MachO::LC_CODE_SIGNATURE) { | |||
| 1368 | if ((Err = checkLinkeditDataCommand(*this, Load, I, &CodeSignLoadCmd, | |||
| 1369 | "LC_CODE_SIGNATURE", Elements, | |||
| 1370 | "code signature data"))) | |||
| 1371 | return; | |||
| 1372 | } else if (Load.C.cmd == MachO::LC_DYLD_INFO) { | |||
| 1373 | if ((Err = checkDyldInfoCommand(*this, Load, I, &DyldInfoLoadCmd, | |||
| 1374 | "LC_DYLD_INFO", Elements))) | |||
| 1375 | return; | |||
| 1376 | } else if (Load.C.cmd == MachO::LC_DYLD_INFO_ONLY) { | |||
| 1377 | if ((Err = checkDyldInfoCommand(*this, Load, I, &DyldInfoLoadCmd, | |||
| 1378 | "LC_DYLD_INFO_ONLY", Elements))) | |||
| 1379 | return; | |||
| 1380 | } else if (Load.C.cmd == MachO::LC_UUID) { | |||
| 1381 | if (Load.C.cmdsize != sizeof(MachO::uuid_command)) { | |||
| 1382 | Err = malformedError("LC_UUID command " + Twine(I) + " has incorrect " | |||
| 1383 | "cmdsize"); | |||
| 1384 | return; | |||
| 1385 | } | |||
| 1386 | if (UuidLoadCmd) { | |||
| 1387 | Err = malformedError("more than one LC_UUID command"); | |||
| 1388 | return; | |||
| 1389 | } | |||
| 1390 | UuidLoadCmd = Load.Ptr; | |||
| 1391 | } else if (Load.C.cmd == MachO::LC_SEGMENT_64) { | |||
| 1392 | if ((Err = parseSegmentLoadCommand<MachO::segment_command_64, | |||
| 1393 | MachO::section_64>( | |||
| 1394 | *this, Load, Sections, HasPageZeroSegment, I, | |||
| 1395 | "LC_SEGMENT_64", SizeOfHeaders, Elements))) | |||
| 1396 | return; | |||
| 1397 | } else if (Load.C.cmd == MachO::LC_SEGMENT) { | |||
| 1398 | if ((Err = parseSegmentLoadCommand<MachO::segment_command, | |||
| 1399 | MachO::section>( | |||
| 1400 | *this, Load, Sections, HasPageZeroSegment, I, | |||
| 1401 | "LC_SEGMENT", SizeOfHeaders, Elements))) | |||
| 1402 | return; | |||
| 1403 | } else if (Load.C.cmd == MachO::LC_ID_DYLIB) { | |||
| 1404 | if ((Err = checkDylibIdCommand(*this, Load, I, &DyldIdLoadCmd))) | |||
| 1405 | return; | |||
| 1406 | } else if (Load.C.cmd == MachO::LC_LOAD_DYLIB) { | |||
| 1407 | if ((Err = checkDylibCommand(*this, Load, I, "LC_LOAD_DYLIB"))) | |||
| 1408 | return; | |||
| 1409 | Libraries.push_back(Load.Ptr); | |||
| 1410 | } else if (Load.C.cmd == MachO::LC_LOAD_WEAK_DYLIB) { | |||
| 1411 | if ((Err = checkDylibCommand(*this, Load, I, "LC_LOAD_WEAK_DYLIB"))) | |||
| 1412 | return; | |||
| 1413 | Libraries.push_back(Load.Ptr); | |||
| 1414 | } else if (Load.C.cmd == MachO::LC_LAZY_LOAD_DYLIB) { | |||
| 1415 | if ((Err = checkDylibCommand(*this, Load, I, "LC_LAZY_LOAD_DYLIB"))) | |||
| 1416 | return; | |||
| 1417 | Libraries.push_back(Load.Ptr); | |||
| 1418 | } else if (Load.C.cmd == MachO::LC_REEXPORT_DYLIB) { | |||
| 1419 | if ((Err = checkDylibCommand(*this, Load, I, "LC_REEXPORT_DYLIB"))) | |||
| 1420 | return; | |||
| 1421 | Libraries.push_back(Load.Ptr); | |||
| 1422 | } else if (Load.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB) { | |||
| 1423 | if ((Err = checkDylibCommand(*this, Load, I, "LC_LOAD_UPWARD_DYLIB"))) | |||
| 1424 | return; | |||
| 1425 | Libraries.push_back(Load.Ptr); | |||
| 1426 | } else if (Load.C.cmd == MachO::LC_ID_DYLINKER) { | |||
| 1427 | if ((Err = checkDyldCommand(*this, Load, I, "LC_ID_DYLINKER"))) | |||
| 1428 | return; | |||
| 1429 | } else if (Load.C.cmd == MachO::LC_LOAD_DYLINKER) { | |||
| 1430 | if ((Err = checkDyldCommand(*this, Load, I, "LC_LOAD_DYLINKER"))) | |||
| 1431 | return; | |||
| 1432 | } else if (Load.C.cmd == MachO::LC_DYLD_ENVIRONMENT) { | |||
| 1433 | if ((Err = checkDyldCommand(*this, Load, I, "LC_DYLD_ENVIRONMENT"))) | |||
| 1434 | return; | |||
| 1435 | } else if (Load.C.cmd == MachO::LC_VERSION_MIN_MACOSX) { | |||
| 1436 | if ((Err = checkVersCommand(*this, Load, I, &VersLoadCmd, | |||
| 1437 | "LC_VERSION_MIN_MACOSX"))) | |||
| 1438 | return; | |||
| 1439 | } else if (Load.C.cmd == MachO::LC_VERSION_MIN_IPHONEOS) { | |||
| 1440 | if ((Err = checkVersCommand(*this, Load, I, &VersLoadCmd, | |||
| 1441 | "LC_VERSION_MIN_IPHONEOS"))) | |||
| 1442 | return; | |||
| 1443 | } else if (Load.C.cmd == MachO::LC_VERSION_MIN_TVOS) { | |||
| 1444 | if ((Err = checkVersCommand(*this, Load, I, &VersLoadCmd, | |||
| 1445 | "LC_VERSION_MIN_TVOS"))) | |||
| 1446 | return; | |||
| 1447 | } else if (Load.C.cmd == MachO::LC_VERSION_MIN_WATCHOS) { | |||
| 1448 | if ((Err = checkVersCommand(*this, Load, I, &VersLoadCmd, | |||
| 1449 | "LC_VERSION_MIN_WATCHOS"))) | |||
| 1450 | return; | |||
| 1451 | } else if (Load.C.cmd == MachO::LC_NOTE) { | |||
| 1452 | if ((Err = checkNoteCommand(*this, Load, I, Elements))) | |||
| 1453 | return; | |||
| 1454 | } else if (Load.C.cmd == MachO::LC_BUILD_VERSION) { | |||
| 1455 | if ((Err = parseBuildVersionCommand(*this, Load, BuildTools, I))) | |||
| 1456 | return; | |||
| 1457 | } else if (Load.C.cmd == MachO::LC_RPATH) { | |||
| 1458 | if ((Err = checkRpathCommand(*this, Load, I))) | |||
| 1459 | return; | |||
| 1460 | } else if (Load.C.cmd == MachO::LC_SOURCE_VERSION) { | |||
| 1461 | if (Load.C.cmdsize != sizeof(MachO::source_version_command)) { | |||
| 1462 | Err = malformedError("LC_SOURCE_VERSION command " + Twine(I) + | |||
| 1463 | " has incorrect cmdsize"); | |||
| 1464 | return; | |||
| 1465 | } | |||
| 1466 | if (SourceLoadCmd) { | |||
| 1467 | Err = malformedError("more than one LC_SOURCE_VERSION command"); | |||
| 1468 | return; | |||
| 1469 | } | |||
| 1470 | SourceLoadCmd = Load.Ptr; | |||
| 1471 | } else if (Load.C.cmd == MachO::LC_MAIN) { | |||
| 1472 | if (Load.C.cmdsize != sizeof(MachO::entry_point_command)) { | |||
| 1473 | Err = malformedError("LC_MAIN command " + Twine(I) + | |||
| 1474 | " has incorrect cmdsize"); | |||
| 1475 | return; | |||
| 1476 | } | |||
| 1477 | if (EntryPointLoadCmd) { | |||
| 1478 | Err = malformedError("more than one LC_MAIN command"); | |||
| 1479 | return; | |||
| 1480 | } | |||
| 1481 | EntryPointLoadCmd = Load.Ptr; | |||
| 1482 | } else if (Load.C.cmd == MachO::LC_ENCRYPTION_INFO) { | |||
| 1483 | if (Load.C.cmdsize != sizeof(MachO::encryption_info_command)) { | |||
| 1484 | Err = malformedError("LC_ENCRYPTION_INFO command " + Twine(I) + | |||
| 1485 | " has incorrect cmdsize"); | |||
| 1486 | return; | |||
| 1487 | } | |||
| 1488 | MachO::encryption_info_command E = | |||
| 1489 | getStruct<MachO::encryption_info_command>(*this, Load.Ptr); | |||
| 1490 | if ((Err = checkEncryptCommand(*this, Load, I, E.cryptoff, E.cryptsize, | |||
| 1491 | &EncryptLoadCmd, "LC_ENCRYPTION_INFO"))) | |||
| 1492 | return; | |||
| 1493 | } else if (Load.C.cmd == MachO::LC_ENCRYPTION_INFO_64) { | |||
| 1494 | if (Load.C.cmdsize != sizeof(MachO::encryption_info_command_64)) { | |||
| 1495 | Err = malformedError("LC_ENCRYPTION_INFO_64 command " + Twine(I) + | |||
| 1496 | " has incorrect cmdsize"); | |||
| 1497 | return; | |||
| 1498 | } | |||
| 1499 | MachO::encryption_info_command_64 E = | |||
| 1500 | getStruct<MachO::encryption_info_command_64>(*this, Load.Ptr); | |||
| 1501 | if ((Err = checkEncryptCommand(*this, Load, I, E.cryptoff, E.cryptsize, | |||
| 1502 | &EncryptLoadCmd, "LC_ENCRYPTION_INFO_64"))) | |||
| 1503 | return; | |||
| 1504 | } else if (Load.C.cmd == MachO::LC_LINKER_OPTION) { | |||
| 1505 | if ((Err = checkLinkerOptCommand(*this, Load, I))) | |||
| 1506 | return; | |||
| 1507 | } else if (Load.C.cmd == MachO::LC_SUB_FRAMEWORK) { | |||
| 1508 | if (Load.C.cmdsize < sizeof(MachO::sub_framework_command)) { | |||
| 1509 | Err = malformedError("load command " + Twine(I) + | |||
| 1510 | " LC_SUB_FRAMEWORK cmdsize too small"); | |||
| 1511 | return; | |||
| 1512 | } | |||
| 1513 | MachO::sub_framework_command S = | |||
| 1514 | getStruct<MachO::sub_framework_command>(*this, Load.Ptr); | |||
| 1515 | if ((Err = checkSubCommand(*this, Load, I, "LC_SUB_FRAMEWORK", | |||
| 1516 | sizeof(MachO::sub_framework_command), | |||
| 1517 | "sub_framework_command", S.umbrella, | |||
| 1518 | "umbrella"))) | |||
| 1519 | return; | |||
| 1520 | } else if (Load.C.cmd == MachO::LC_SUB_UMBRELLA) { | |||
| 1521 | if (Load.C.cmdsize < sizeof(MachO::sub_umbrella_command)) { | |||
| 1522 | Err = malformedError("load command " + Twine(I) + | |||
| 1523 | " LC_SUB_UMBRELLA cmdsize too small"); | |||
| 1524 | return; | |||
| 1525 | } | |||
| 1526 | MachO::sub_umbrella_command S = | |||
| 1527 | getStruct<MachO::sub_umbrella_command>(*this, Load.Ptr); | |||
| 1528 | if ((Err = checkSubCommand(*this, Load, I, "LC_SUB_UMBRELLA", | |||
| 1529 | sizeof(MachO::sub_umbrella_command), | |||
| 1530 | "sub_umbrella_command", S.sub_umbrella, | |||
| 1531 | "sub_umbrella"))) | |||
| 1532 | return; | |||
| 1533 | } else if (Load.C.cmd == MachO::LC_SUB_LIBRARY) { | |||
| 1534 | if (Load.C.cmdsize < sizeof(MachO::sub_library_command)) { | |||
| 1535 | Err = malformedError("load command " + Twine(I) + | |||
| 1536 | " LC_SUB_LIBRARY cmdsize too small"); | |||
| 1537 | return; | |||
| 1538 | } | |||
| 1539 | MachO::sub_library_command S = | |||
| 1540 | getStruct<MachO::sub_library_command>(*this, Load.Ptr); | |||
| 1541 | if ((Err = checkSubCommand(*this, Load, I, "LC_SUB_LIBRARY", | |||
| 1542 | sizeof(MachO::sub_library_command), | |||
| 1543 | "sub_library_command", S.sub_library, | |||
| 1544 | "sub_library"))) | |||
| 1545 | return; | |||
| 1546 | } else if (Load.C.cmd == MachO::LC_SUB_CLIENT) { | |||
| 1547 | if (Load.C.cmdsize < sizeof(MachO::sub_client_command)) { | |||
| 1548 | Err = malformedError("load command " + Twine(I) + | |||
| 1549 | " LC_SUB_CLIENT cmdsize too small"); | |||
| 1550 | return; | |||
| 1551 | } | |||
| 1552 | MachO::sub_client_command S = | |||
| 1553 | getStruct<MachO::sub_client_command>(*this, Load.Ptr); | |||
| 1554 | if ((Err = checkSubCommand(*this, Load, I, "LC_SUB_CLIENT", | |||
| 1555 | sizeof(MachO::sub_client_command), | |||
| 1556 | "sub_client_command", S.client, "client"))) | |||
| 1557 | return; | |||
| 1558 | } else if (Load.C.cmd == MachO::LC_ROUTINES) { | |||
| 1559 | if (Load.C.cmdsize != sizeof(MachO::routines_command)) { | |||
| 1560 | Err = malformedError("LC_ROUTINES command " + Twine(I) + | |||
| 1561 | " has incorrect cmdsize"); | |||
| 1562 | return; | |||
| 1563 | } | |||
| 1564 | if (RoutinesLoadCmd) { | |||
| 1565 | Err = malformedError("more than one LC_ROUTINES and or LC_ROUTINES_64 " | |||
| 1566 | "command"); | |||
| 1567 | return; | |||
| 1568 | } | |||
| 1569 | RoutinesLoadCmd = Load.Ptr; | |||
| 1570 | } else if (Load.C.cmd == MachO::LC_ROUTINES_64) { | |||
| 1571 | if (Load.C.cmdsize != sizeof(MachO::routines_command_64)) { | |||
| 1572 | Err = malformedError("LC_ROUTINES_64 command " + Twine(I) + | |||
| 1573 | " has incorrect cmdsize"); | |||
| 1574 | return; | |||
| 1575 | } | |||
| 1576 | if (RoutinesLoadCmd) { | |||
| 1577 | Err = malformedError("more than one LC_ROUTINES_64 and or LC_ROUTINES " | |||
| 1578 | "command"); | |||
| 1579 | return; | |||
| 1580 | } | |||
| 1581 | RoutinesLoadCmd = Load.Ptr; | |||
| 1582 | } else if (Load.C.cmd == MachO::LC_UNIXTHREAD) { | |||
| 1583 | if ((Err = checkThreadCommand(*this, Load, I, "LC_UNIXTHREAD"))) | |||
| 1584 | return; | |||
| 1585 | if (UnixThreadLoadCmd) { | |||
| 1586 | Err = malformedError("more than one LC_UNIXTHREAD command"); | |||
| 1587 | return; | |||
| 1588 | } | |||
| 1589 | UnixThreadLoadCmd = Load.Ptr; | |||
| 1590 | } else if (Load.C.cmd == MachO::LC_THREAD) { | |||
| 1591 | if ((Err = checkThreadCommand(*this, Load, I, "LC_THREAD"))) | |||
| 1592 | return; | |||
| 1593 | // Note: LC_TWOLEVEL_HINTS is really obsolete and is not supported. | |||
| 1594 | } else if (Load.C.cmd == MachO::LC_TWOLEVEL_HINTS) { | |||
| 1595 | if ((Err = checkTwoLevelHintsCommand(*this, Load, I, | |||
| 1596 | &TwoLevelHintsLoadCmd, Elements))) | |||
| 1597 | return; | |||
| 1598 | } else if (Load.C.cmd == MachO::LC_IDENT) { | |||
| 1599 | // Note: LC_IDENT is ignored. | |||
| 1600 | continue; | |||
| 1601 | } else if (isLoadCommandObsolete(Load.C.cmd)) { | |||
| 1602 | Err = malformedError("load command " + Twine(I) + " for cmd value of: " + | |||
| 1603 | Twine(Load.C.cmd) + " is obsolete and not " | |||
| 1604 | "supported"); | |||
| 1605 | return; | |||
| 1606 | } | |||
| 1607 | // TODO: generate a error for unknown load commands by default. But still | |||
| 1608 | // need work out an approach to allow or not allow unknown values like this | |||
| 1609 | // as an option for some uses like lldb. | |||
| 1610 | if (I < LoadCommandCount - 1) { | |||
| 1611 | if (auto LoadOrErr = getNextLoadCommandInfo(*this, I, Load)) | |||
| 1612 | Load = *LoadOrErr; | |||
| 1613 | else { | |||
| 1614 | Err = LoadOrErr.takeError(); | |||
| 1615 | return; | |||
| 1616 | } | |||
| 1617 | } | |||
| 1618 | } | |||
| 1619 | if (!SymtabLoadCmd) { | |||
| 1620 | if (DysymtabLoadCmd) { | |||
| 1621 | Err = malformedError("contains LC_DYSYMTAB load command without a " | |||
| 1622 | "LC_SYMTAB load command"); | |||
| 1623 | return; | |||
| 1624 | } | |||
| 1625 | } else if (DysymtabLoadCmd) { | |||
| 1626 | MachO::symtab_command Symtab = | |||
| 1627 | getStruct<MachO::symtab_command>(*this, SymtabLoadCmd); | |||
| 1628 | MachO::dysymtab_command Dysymtab = | |||
| 1629 | getStruct<MachO::dysymtab_command>(*this, DysymtabLoadCmd); | |||
| 1630 | if (Dysymtab.nlocalsym != 0 && Dysymtab.ilocalsym > Symtab.nsyms) { | |||
| 1631 | Err = malformedError("ilocalsym in LC_DYSYMTAB load command " | |||
| 1632 | "extends past the end of the symbol table"); | |||
| 1633 | return; | |||
| 1634 | } | |||
| 1635 | uint64_t BigSize = Dysymtab.ilocalsym; | |||
| 1636 | BigSize += Dysymtab.nlocalsym; | |||
| 1637 | if (Dysymtab.nlocalsym != 0 && BigSize > Symtab.nsyms) { | |||
| 1638 | Err = malformedError("ilocalsym plus nlocalsym in LC_DYSYMTAB load " | |||
| 1639 | "command extends past the end of the symbol table"); | |||
| 1640 | return; | |||
| 1641 | } | |||
| 1642 | if (Dysymtab.nextdefsym != 0 && Dysymtab.iextdefsym > Symtab.nsyms) { | |||
| 1643 | Err = malformedError("iextdefsym in LC_DYSYMTAB load command " | |||
| 1644 | "extends past the end of the symbol table"); | |||
| 1645 | return; | |||
| 1646 | } | |||
| 1647 | BigSize = Dysymtab.iextdefsym; | |||
| 1648 | BigSize += Dysymtab.nextdefsym; | |||
| 1649 | if (Dysymtab.nextdefsym != 0 && BigSize > Symtab.nsyms) { | |||
| 1650 | Err = malformedError("iextdefsym plus nextdefsym in LC_DYSYMTAB " | |||
| 1651 | "load command extends past the end of the symbol " | |||
| 1652 | "table"); | |||
| 1653 | return; | |||
| 1654 | } | |||
| 1655 | if (Dysymtab.nundefsym != 0 && Dysymtab.iundefsym > Symtab.nsyms) { | |||
| 1656 | Err = malformedError("iundefsym in LC_DYSYMTAB load command " | |||
| 1657 | "extends past the end of the symbol table"); | |||
| 1658 | return; | |||
| 1659 | } | |||
| 1660 | BigSize = Dysymtab.iundefsym; | |||
| 1661 | BigSize += Dysymtab.nundefsym; | |||
| 1662 | if (Dysymtab.nundefsym != 0 && BigSize > Symtab.nsyms) { | |||
| 1663 | Err = malformedError("iundefsym plus nundefsym in LC_DYSYMTAB load " | |||
| 1664 | " command extends past the end of the symbol table"); | |||
| 1665 | return; | |||
| 1666 | } | |||
| 1667 | } | |||
| 1668 | if ((getHeader().filetype == MachO::MH_DYLIB || | |||
| 1669 | getHeader().filetype == MachO::MH_DYLIB_STUB) && | |||
| 1670 | DyldIdLoadCmd == nullptr) { | |||
| 1671 | Err = malformedError("no LC_ID_DYLIB load command in dynamic library " | |||
| 1672 | "filetype"); | |||
| 1673 | return; | |||
| 1674 | } | |||
| 1675 | assert(LoadCommands.size() == LoadCommandCount)((void)0); | |||
| 1676 | ||||
| 1677 | Err = Error::success(); | |||
| 1678 | } | |||
| 1679 | ||||
| 1680 | Error MachOObjectFile::checkSymbolTable() const { | |||
| 1681 | uint32_t Flags = 0; | |||
| 1682 | if (is64Bit()) { | |||
| 1683 | MachO::mach_header_64 H_64 = MachOObjectFile::getHeader64(); | |||
| 1684 | Flags = H_64.flags; | |||
| 1685 | } else { | |||
| 1686 | MachO::mach_header H = MachOObjectFile::getHeader(); | |||
| 1687 | Flags = H.flags; | |||
| 1688 | } | |||
| 1689 | uint8_t NType = 0; | |||
| 1690 | uint8_t NSect = 0; | |||
| 1691 | uint16_t NDesc = 0; | |||
| 1692 | uint32_t NStrx = 0; | |||
| 1693 | uint64_t NValue = 0; | |||
| 1694 | uint32_t SymbolIndex = 0; | |||
| 1695 | MachO::symtab_command S = getSymtabLoadCommand(); | |||
| 1696 | for (const SymbolRef &Symbol : symbols()) { | |||
| 1697 | DataRefImpl SymDRI = Symbol.getRawDataRefImpl(); | |||
| 1698 | if (is64Bit()) { | |||
| 1699 | MachO::nlist_64 STE_64 = getSymbol64TableEntry(SymDRI); | |||
| 1700 | NType = STE_64.n_type; | |||
| 1701 | NSect = STE_64.n_sect; | |||
| 1702 | NDesc = STE_64.n_desc; | |||
| 1703 | NStrx = STE_64.n_strx; | |||
| 1704 | NValue = STE_64.n_value; | |||
| 1705 | } else { | |||
| 1706 | MachO::nlist STE = getSymbolTableEntry(SymDRI); | |||
| 1707 | NType = STE.n_type; | |||
| 1708 | NSect = STE.n_sect; | |||
| 1709 | NDesc = STE.n_desc; | |||
| 1710 | NStrx = STE.n_strx; | |||
| 1711 | NValue = STE.n_value; | |||
| 1712 | } | |||
| 1713 | if ((NType & MachO::N_STAB) == 0) { | |||
| 1714 | if ((NType & MachO::N_TYPE) == MachO::N_SECT) { | |||
| 1715 | if (NSect == 0 || NSect > Sections.size()) | |||
| 1716 | return malformedError("bad section index: " + Twine((int)NSect) + | |||
| 1717 | " for symbol at index " + Twine(SymbolIndex)); | |||
| 1718 | } | |||
| 1719 | if ((NType & MachO::N_TYPE) == MachO::N_INDR) { | |||
| 1720 | if (NValue >= S.strsize) | |||
| 1721 | return malformedError("bad n_value: " + Twine((int)NValue) + " past " | |||
| 1722 | "the end of string table, for N_INDR symbol at " | |||
| 1723 | "index " + Twine(SymbolIndex)); | |||
| 1724 | } | |||
| 1725 | if ((Flags & MachO::MH_TWOLEVEL) == MachO::MH_TWOLEVEL && | |||
| 1726 | (((NType & MachO::N_TYPE) == MachO::N_UNDF && NValue == 0) || | |||
| 1727 | (NType & MachO::N_TYPE) == MachO::N_PBUD)) { | |||
| 1728 | uint32_t LibraryOrdinal = MachO::GET_LIBRARY_ORDINAL(NDesc); | |||
| 1729 | if (LibraryOrdinal != 0 && | |||
| 1730 | LibraryOrdinal != MachO::EXECUTABLE_ORDINAL && | |||
| 1731 | LibraryOrdinal != MachO::DYNAMIC_LOOKUP_ORDINAL && | |||
| 1732 | LibraryOrdinal - 1 >= Libraries.size() ) { | |||
| 1733 | return malformedError("bad library ordinal: " + Twine(LibraryOrdinal) + | |||
| 1734 | " for symbol at index " + Twine(SymbolIndex)); | |||
| 1735 | } | |||
| 1736 | } | |||
| 1737 | } | |||
| 1738 | if (NStrx >= S.strsize) | |||
| 1739 | return malformedError("bad string table index: " + Twine((int)NStrx) + | |||
| 1740 | " past the end of string table, for symbol at " | |||
| 1741 | "index " + Twine(SymbolIndex)); | |||
| 1742 | SymbolIndex++; | |||
| 1743 | } | |||
| 1744 | return Error::success(); | |||
| 1745 | } | |||
| 1746 | ||||
| 1747 | void MachOObjectFile::moveSymbolNext(DataRefImpl &Symb) const { | |||
| 1748 | unsigned SymbolTableEntrySize = is64Bit() ? | |||
| 1749 | sizeof(MachO::nlist_64) : | |||
| 1750 | sizeof(MachO::nlist); | |||
| 1751 | Symb.p += SymbolTableEntrySize; | |||
| 1752 | } | |||
| 1753 | ||||
| 1754 | Expected<StringRef> MachOObjectFile::getSymbolName(DataRefImpl Symb) const { | |||
| 1755 | StringRef StringTable = getStringTableData(); | |||
| 1756 | MachO::nlist_base Entry = getSymbolTableEntryBase(*this, Symb); | |||
| 1757 | if (Entry.n_strx == 0) | |||
| 1758 | // A n_strx value of 0 indicates that no name is associated with a | |||
| 1759 | // particular symbol table entry. | |||
| 1760 | return StringRef(); | |||
| 1761 | const char *Start = &StringTable.data()[Entry.n_strx]; | |||
| 1762 | if (Start < getData().begin() || Start >= getData().end()) { | |||
| 1763 | return malformedError("bad string index: " + Twine(Entry.n_strx) + | |||
| 1764 | " for symbol at index " + Twine(getSymbolIndex(Symb))); | |||
| 1765 | } | |||
| 1766 | return StringRef(Start); | |||
| 1767 | } | |||
| 1768 | ||||
| 1769 | unsigned MachOObjectFile::getSectionType(SectionRef Sec) const { | |||
| 1770 | DataRefImpl DRI = Sec.getRawDataRefImpl(); | |||
| 1771 | uint32_t Flags = getSectionFlags(*this, DRI); | |||
| 1772 | return Flags & MachO::SECTION_TYPE; | |||
| 1773 | } | |||
| 1774 | ||||
| 1775 | uint64_t MachOObjectFile::getNValue(DataRefImpl Sym) const { | |||
| 1776 | if (is64Bit()) { | |||
| 1777 | MachO::nlist_64 Entry = getSymbol64TableEntry(Sym); | |||
| 1778 | return Entry.n_value; | |||
| 1779 | } | |||
| 1780 | MachO::nlist Entry = getSymbolTableEntry(Sym); | |||
| 1781 | return Entry.n_value; | |||
| 1782 | } | |||
| 1783 | ||||
| 1784 | // getIndirectName() returns the name of the alias'ed symbol who's string table | |||
| 1785 | // index is in the n_value field. | |||
| 1786 | std::error_code MachOObjectFile::getIndirectName(DataRefImpl Symb, | |||
| 1787 | StringRef &Res) const { | |||
| 1788 | StringRef StringTable = getStringTableData(); | |||
| 1789 | MachO::nlist_base Entry = getSymbolTableEntryBase(*this, Symb); | |||
| 1790 | if ((Entry.n_type & MachO::N_TYPE) != MachO::N_INDR) | |||
| 1791 | return object_error::parse_failed; | |||
| 1792 | uint64_t NValue = getNValue(Symb); | |||
| 1793 | if (NValue >= StringTable.size()) | |||
| 1794 | return object_error::parse_failed; | |||
| 1795 | const char *Start = &StringTable.data()[NValue]; | |||
| 1796 | Res = StringRef(Start); | |||
| 1797 | return std::error_code(); | |||
| 1798 | } | |||
| 1799 | ||||
| 1800 | uint64_t MachOObjectFile::getSymbolValueImpl(DataRefImpl Sym) const { | |||
| 1801 | return getNValue(Sym); | |||
| 1802 | } | |||
| 1803 | ||||
| 1804 | Expected<uint64_t> MachOObjectFile::getSymbolAddress(DataRefImpl Sym) const { | |||
| 1805 | return getSymbolValue(Sym); | |||
| 1806 | } | |||
| 1807 | ||||
| 1808 | uint32_t MachOObjectFile::getSymbolAlignment(DataRefImpl DRI) const { | |||
| 1809 | uint32_t Flags = cantFail(getSymbolFlags(DRI)); | |||
| 1810 | if (Flags & SymbolRef::SF_Common) { | |||
| 1811 | MachO::nlist_base Entry = getSymbolTableEntryBase(*this, DRI); | |||
| 1812 | return 1 << MachO::GET_COMM_ALIGN(Entry.n_desc); | |||
| 1813 | } | |||
| 1814 | return 0; | |||
| 1815 | } | |||
| 1816 | ||||
| 1817 | uint64_t MachOObjectFile::getCommonSymbolSizeImpl(DataRefImpl DRI) const { | |||
| 1818 | return getNValue(DRI); | |||
| 1819 | } | |||
| 1820 | ||||
| 1821 | Expected<SymbolRef::Type> | |||
| 1822 | MachOObjectFile::getSymbolType(DataRefImpl Symb) const { | |||
| 1823 | MachO::nlist_base Entry = getSymbolTableEntryBase(*this, Symb); | |||
| 1824 | uint8_t n_type = Entry.n_type; | |||
| 1825 | ||||
| 1826 | // If this is a STAB debugging symbol, we can do nothing more. | |||
| 1827 | if (n_type & MachO::N_STAB) | |||
| 1828 | return SymbolRef::ST_Debug; | |||
| 1829 | ||||
| 1830 | switch (n_type & MachO::N_TYPE) { | |||
| 1831 | case MachO::N_UNDF : | |||
| 1832 | return SymbolRef::ST_Unknown; | |||
| 1833 | case MachO::N_SECT : | |||
| 1834 | Expected<section_iterator> SecOrError = getSymbolSection(Symb); | |||
| 1835 | if (!SecOrError) | |||
| 1836 | return SecOrError.takeError(); | |||
| 1837 | section_iterator Sec = *SecOrError; | |||
| 1838 | if (Sec == section_end()) | |||
| 1839 | return SymbolRef::ST_Other; | |||
| 1840 | if (Sec->isData() || Sec->isBSS()) | |||
| 1841 | return SymbolRef::ST_Data; | |||
| 1842 | return SymbolRef::ST_Function; | |||
| 1843 | } | |||
| 1844 | return SymbolRef::ST_Other; | |||
| 1845 | } | |||
| 1846 | ||||
| 1847 | Expected<uint32_t> MachOObjectFile::getSymbolFlags(DataRefImpl DRI) const { | |||
| 1848 | MachO::nlist_base Entry = getSymbolTableEntryBase(*this, DRI); | |||
| 1849 | ||||
| 1850 | uint8_t MachOType = Entry.n_type; | |||
| 1851 | uint16_t MachOFlags = Entry.n_desc; | |||
| 1852 | ||||
| 1853 | uint32_t Result = SymbolRef::SF_None; | |||
| 1854 | ||||
| 1855 | if ((MachOType & MachO::N_TYPE) == MachO::N_INDR) | |||
| 1856 | Result |= SymbolRef::SF_Indirect; | |||
| 1857 | ||||
| 1858 | if (MachOType & MachO::N_STAB) | |||
| 1859 | Result |= SymbolRef::SF_FormatSpecific; | |||
| 1860 | ||||
| 1861 | if (MachOType & MachO::N_EXT) { | |||
| 1862 | Result |= SymbolRef::SF_Global; | |||
| 1863 | if ((MachOType & MachO::N_TYPE) == MachO::N_UNDF) { | |||
| 1864 | if (getNValue(DRI)) | |||
| 1865 | Result |= SymbolRef::SF_Common; | |||
| 1866 | else | |||
| 1867 | Result |= SymbolRef::SF_Undefined; | |||
| 1868 | } | |||
| 1869 | ||||
| 1870 | if (!(MachOType & MachO::N_PEXT)) | |||
| 1871 | Result |= SymbolRef::SF_Exported; | |||
| 1872 | } | |||
| 1873 | ||||
| 1874 | if (MachOFlags & (MachO::N_WEAK_REF | MachO::N_WEAK_DEF)) | |||
| 1875 | Result |= SymbolRef::SF_Weak; | |||
| 1876 | ||||
| 1877 | if (MachOFlags & (MachO::N_ARM_THUMB_DEF)) | |||
| 1878 | Result |= SymbolRef::SF_Thumb; | |||
| 1879 | ||||
| 1880 | if ((MachOType & MachO::N_TYPE) == MachO::N_ABS) | |||
| 1881 | Result |= SymbolRef::SF_Absolute; | |||
| 1882 | ||||
| 1883 | return Result; | |||
| 1884 | } | |||
| 1885 | ||||
| 1886 | Expected<section_iterator> | |||
| 1887 | MachOObjectFile::getSymbolSection(DataRefImpl Symb) const { | |||
| 1888 | MachO::nlist_base Entry = getSymbolTableEntryBase(*this, Symb); | |||
| 1889 | uint8_t index = Entry.n_sect; | |||
| 1890 | ||||
| 1891 | if (index == 0) | |||
| 1892 | return section_end(); | |||
| 1893 | DataRefImpl DRI; | |||
| 1894 | DRI.d.a = index - 1; | |||
| 1895 | if (DRI.d.a >= Sections.size()){ | |||
| 1896 | return malformedError("bad section index: " + Twine((int)index) + | |||
| 1897 | " for symbol at index " + Twine(getSymbolIndex(Symb))); | |||
| 1898 | } | |||
| 1899 | return section_iterator(SectionRef(DRI, this)); | |||
| 1900 | } | |||
| 1901 | ||||
| 1902 | unsigned MachOObjectFile::getSymbolSectionID(SymbolRef Sym) const { | |||
| 1903 | MachO::nlist_base Entry = | |||
| 1904 | getSymbolTableEntryBase(*this, Sym.getRawDataRefImpl()); | |||
| 1905 | return Entry.n_sect - 1; | |||
| 1906 | } | |||
| 1907 | ||||
| 1908 | void MachOObjectFile::moveSectionNext(DataRefImpl &Sec) const { | |||
| 1909 | Sec.d.a++; | |||
| 1910 | } | |||
| 1911 | ||||
| 1912 | Expected<StringRef> MachOObjectFile::getSectionName(DataRefImpl Sec) const { | |||
| 1913 | ArrayRef<char> Raw = getSectionRawName(Sec); | |||
| 1914 | return parseSegmentOrSectionName(Raw.data()); | |||
| 1915 | } | |||
| 1916 | ||||
| 1917 | uint64_t MachOObjectFile::getSectionAddress(DataRefImpl Sec) const { | |||
| 1918 | if (is64Bit()) | |||
| 1919 | return getSection64(Sec).addr; | |||
| 1920 | return getSection(Sec).addr; | |||
| 1921 | } | |||
| 1922 | ||||
| 1923 | uint64_t MachOObjectFile::getSectionIndex(DataRefImpl Sec) const { | |||
| 1924 | return Sec.d.a; | |||
| 1925 | } | |||
| 1926 | ||||
| 1927 | uint64_t MachOObjectFile::getSectionSize(DataRefImpl Sec) const { | |||
| 1928 | // In the case if a malformed Mach-O file where the section offset is past | |||
| 1929 | // the end of the file or some part of the section size is past the end of | |||
| 1930 | // the file return a size of zero or a size that covers the rest of the file | |||
| 1931 | // but does not extend past the end of the file. | |||
| 1932 | uint32_t SectOffset, SectType; | |||
| 1933 | uint64_t SectSize; | |||
| 1934 | ||||
| 1935 | if (is64Bit()) { | |||
| 1936 | MachO::section_64 Sect = getSection64(Sec); | |||
| 1937 | SectOffset = Sect.offset; | |||
| 1938 | SectSize = Sect.size; | |||
| 1939 | SectType = Sect.flags & MachO::SECTION_TYPE; | |||
| 1940 | } else { | |||
| 1941 | MachO::section Sect = getSection(Sec); | |||
| 1942 | SectOffset = Sect.offset; | |||
| 1943 | SectSize = Sect.size; | |||
| 1944 | SectType = Sect.flags & MachO::SECTION_TYPE; | |||
| 1945 | } | |||
| 1946 | if (SectType == MachO::S_ZEROFILL || SectType == MachO::S_GB_ZEROFILL) | |||
| 1947 | return SectSize; | |||
| 1948 | uint64_t FileSize = getData().size(); | |||
| 1949 | if (SectOffset > FileSize) | |||
| 1950 | return 0; | |||
| 1951 | if (FileSize - SectOffset < SectSize) | |||
| 1952 | return FileSize - SectOffset; | |||
| 1953 | return SectSize; | |||
| 1954 | } | |||
| 1955 | ||||
| 1956 | ArrayRef<uint8_t> MachOObjectFile::getSectionContents(uint32_t Offset, | |||
| 1957 | uint64_t Size) const { | |||
| 1958 | return arrayRefFromStringRef(getData().substr(Offset, Size)); | |||
| 1959 | } | |||
| 1960 | ||||
| 1961 | Expected<ArrayRef<uint8_t>> | |||
| 1962 | MachOObjectFile::getSectionContents(DataRefImpl Sec) const { | |||
| 1963 | uint32_t Offset; | |||
| 1964 | uint64_t Size; | |||
| 1965 | ||||
| 1966 | if (is64Bit()) { | |||
| 1967 | MachO::section_64 Sect = getSection64(Sec); | |||
| 1968 | Offset = Sect.offset; | |||
| 1969 | Size = Sect.size; | |||
| 1970 | } else { | |||
| 1971 | MachO::section Sect = getSection(Sec); | |||
| 1972 | Offset = Sect.offset; | |||
| 1973 | Size = Sect.size; | |||
| 1974 | } | |||
| 1975 | ||||
| 1976 | return getSectionContents(Offset, Size); | |||
| 1977 | } | |||
| 1978 | ||||
| 1979 | uint64_t MachOObjectFile::getSectionAlignment(DataRefImpl Sec) const { | |||
| 1980 | uint32_t Align; | |||
| 1981 | if (is64Bit()) { | |||
| 1982 | MachO::section_64 Sect = getSection64(Sec); | |||
| 1983 | Align = Sect.align; | |||
| 1984 | } else { | |||
| 1985 | MachO::section Sect = getSection(Sec); | |||
| 1986 | Align = Sect.align; | |||
| 1987 | } | |||
| 1988 | ||||
| 1989 | return uint64_t(1) << Align; | |||
| 1990 | } | |||
| 1991 | ||||
| 1992 | Expected<SectionRef> MachOObjectFile::getSection(unsigned SectionIndex) const { | |||
| 1993 | if (SectionIndex < 1 || SectionIndex > Sections.size()) | |||
| 1994 | return malformedError("bad section index: " + Twine((int)SectionIndex)); | |||
| 1995 | ||||
| 1996 | DataRefImpl DRI; | |||
| 1997 | DRI.d.a = SectionIndex - 1; | |||
| 1998 | return SectionRef(DRI, this); | |||
| 1999 | } | |||
| 2000 | ||||
| 2001 | Expected<SectionRef> MachOObjectFile::getSection(StringRef SectionName) const { | |||
| 2002 | for (const SectionRef &Section : sections()) { | |||
| 2003 | auto NameOrErr = Section.getName(); | |||
| 2004 | if (!NameOrErr) | |||
| 2005 | return NameOrErr.takeError(); | |||
| 2006 | if (*NameOrErr == SectionName) | |||
| 2007 | return Section; | |||
| 2008 | } | |||
| 2009 | return errorCodeToError(object_error::parse_failed); | |||
| 2010 | } | |||
| 2011 | ||||
| 2012 | bool MachOObjectFile::isSectionCompressed(DataRefImpl Sec) const { | |||
| 2013 | return false; | |||
| 2014 | } | |||
| 2015 | ||||
| 2016 | bool MachOObjectFile::isSectionText(DataRefImpl Sec) const { | |||
| 2017 | uint32_t Flags = getSectionFlags(*this, Sec); | |||
| 2018 | return Flags & MachO::S_ATTR_PURE_INSTRUCTIONS; | |||
| 2019 | } | |||
| 2020 | ||||
| 2021 | bool MachOObjectFile::isSectionData(DataRefImpl Sec) const { | |||
| 2022 | uint32_t Flags = getSectionFlags(*this, Sec); | |||
| 2023 | unsigned SectionType = Flags & MachO::SECTION_TYPE; | |||
| 2024 | return !(Flags & MachO::S_ATTR_PURE_INSTRUCTIONS) && | |||
| 2025 | !(SectionType == MachO::S_ZEROFILL || | |||
| 2026 | SectionType == MachO::S_GB_ZEROFILL); | |||
| 2027 | } | |||
| 2028 | ||||
| 2029 | bool MachOObjectFile::isSectionBSS(DataRefImpl Sec) const { | |||
| 2030 | uint32_t Flags = getSectionFlags(*this, Sec); | |||
| 2031 | unsigned SectionType = Flags & MachO::SECTION_TYPE; | |||
| 2032 | return !(Flags & MachO::S_ATTR_PURE_INSTRUCTIONS) && | |||
| 2033 | (SectionType == MachO::S_ZEROFILL || | |||
| 2034 | SectionType == MachO::S_GB_ZEROFILL); | |||
| 2035 | } | |||
| 2036 | ||||
| 2037 | bool MachOObjectFile::isDebugSection(DataRefImpl Sec) const { | |||
| 2038 | Expected<StringRef> SectionNameOrErr = getSectionName(Sec); | |||
| 2039 | if (!SectionNameOrErr) { | |||
| 2040 | // TODO: Report the error message properly. | |||
| 2041 | consumeError(SectionNameOrErr.takeError()); | |||
| 2042 | return false; | |||
| 2043 | } | |||
| 2044 | StringRef SectionName = SectionNameOrErr.get(); | |||
| 2045 | return SectionName.startswith("__debug") || | |||
| 2046 | SectionName.startswith("__zdebug") || | |||
| 2047 | SectionName.startswith("__apple") || SectionName == "__gdb_index" || | |||
| 2048 | SectionName == "__swift_ast"; | |||
| 2049 | } | |||
| 2050 | ||||
| 2051 | unsigned MachOObjectFile::getSectionID(SectionRef Sec) const { | |||
| 2052 | return Sec.getRawDataRefImpl().d.a; | |||
| 2053 | } | |||
| 2054 | ||||
| 2055 | bool MachOObjectFile::isSectionVirtual(DataRefImpl Sec) const { | |||
| 2056 | uint32_t Flags = getSectionFlags(*this, Sec); | |||
| 2057 | unsigned SectionType = Flags & MachO::SECTION_TYPE; | |||
| 2058 | return SectionType == MachO::S_ZEROFILL || | |||
| 2059 | SectionType == MachO::S_GB_ZEROFILL; | |||
| 2060 | } | |||
| 2061 | ||||
| 2062 | bool MachOObjectFile::isSectionBitcode(DataRefImpl Sec) const { | |||
| 2063 | StringRef SegmentName = getSectionFinalSegmentName(Sec); | |||
| 2064 | if (Expected<StringRef> NameOrErr = getSectionName(Sec)) | |||
| 2065 | return (SegmentName == "__LLVM" && *NameOrErr == "__bitcode"); | |||
| 2066 | return false; | |||
| 2067 | } | |||
| 2068 | ||||
| 2069 | bool MachOObjectFile::isSectionStripped(DataRefImpl Sec) const { | |||
| 2070 | if (is64Bit()) | |||
| 2071 | return getSection64(Sec).offset == 0; | |||
| 2072 | return getSection(Sec).offset == 0; | |||
| 2073 | } | |||
| 2074 | ||||
| 2075 | relocation_iterator MachOObjectFile::section_rel_begin(DataRefImpl Sec) const { | |||
| 2076 | DataRefImpl Ret; | |||
| 2077 | Ret.d.a = Sec.d.a; | |||
| 2078 | Ret.d.b = 0; | |||
| 2079 | return relocation_iterator(RelocationRef(Ret, this)); | |||
| 2080 | } | |||
| 2081 | ||||
| 2082 | relocation_iterator | |||
| 2083 | MachOObjectFile::section_rel_end(DataRefImpl Sec) const { | |||
| 2084 | uint32_t Num; | |||
| 2085 | if (is64Bit()) { | |||
| 2086 | MachO::section_64 Sect = getSection64(Sec); | |||
| 2087 | Num = Sect.nreloc; | |||
| 2088 | } else { | |||
| 2089 | MachO::section Sect = getSection(Sec); | |||
| 2090 | Num = Sect.nreloc; | |||
| 2091 | } | |||
| 2092 | ||||
| 2093 | DataRefImpl Ret; | |||
| 2094 | Ret.d.a = Sec.d.a; | |||
| 2095 | Ret.d.b = Num; | |||
| 2096 | return relocation_iterator(RelocationRef(Ret, this)); | |||
| 2097 | } | |||
| 2098 | ||||
| 2099 | relocation_iterator MachOObjectFile::extrel_begin() const { | |||
| 2100 | DataRefImpl Ret; | |||
| 2101 | // for DYSYMTAB symbols, Ret.d.a == 0 for external relocations | |||
| 2102 | Ret.d.a = 0; // Would normally be a section index. | |||
| 2103 | Ret.d.b = 0; // Index into the external relocations | |||
| 2104 | return relocation_iterator(RelocationRef(Ret, this)); | |||
| 2105 | } | |||
| 2106 | ||||
| 2107 | relocation_iterator MachOObjectFile::extrel_end() const { | |||
| 2108 | MachO::dysymtab_command DysymtabLoadCmd = getDysymtabLoadCommand(); | |||
| 2109 | DataRefImpl Ret; | |||
| 2110 | // for DYSYMTAB symbols, Ret.d.a == 0 for external relocations | |||
| 2111 | Ret.d.a = 0; // Would normally be a section index. | |||
| 2112 | Ret.d.b = DysymtabLoadCmd.nextrel; // Index into the external relocations | |||
| 2113 | return relocation_iterator(RelocationRef(Ret, this)); | |||
| 2114 | } | |||
| 2115 | ||||
| 2116 | relocation_iterator MachOObjectFile::locrel_begin() const { | |||
| 2117 | DataRefImpl Ret; | |||
| 2118 | // for DYSYMTAB symbols, Ret.d.a == 1 for local relocations | |||
| 2119 | Ret.d.a = 1; // Would normally be a section index. | |||
| 2120 | Ret.d.b = 0; // Index into the local relocations | |||
| 2121 | return relocation_iterator(RelocationRef(Ret, this)); | |||
| 2122 | } | |||
| 2123 | ||||
| 2124 | relocation_iterator MachOObjectFile::locrel_end() const { | |||
| 2125 | MachO::dysymtab_command DysymtabLoadCmd = getDysymtabLoadCommand(); | |||
| 2126 | DataRefImpl Ret; | |||
| 2127 | // for DYSYMTAB symbols, Ret.d.a == 1 for local relocations | |||
| 2128 | Ret.d.a = 1; // Would normally be a section index. | |||
| 2129 | Ret.d.b = DysymtabLoadCmd.nlocrel; // Index into the local relocations | |||
| 2130 | return relocation_iterator(RelocationRef(Ret, this)); | |||
| 2131 | } | |||
| 2132 | ||||
| 2133 | void MachOObjectFile::moveRelocationNext(DataRefImpl &Rel) const { | |||
| 2134 | ++Rel.d.b; | |||
| 2135 | } | |||
| 2136 | ||||
| 2137 | uint64_t MachOObjectFile::getRelocationOffset(DataRefImpl Rel) const { | |||
| 2138 | assert((getHeader().filetype == MachO::MH_OBJECT ||((void)0) | |||
| 2139 | getHeader().filetype == MachO::MH_KEXT_BUNDLE) &&((void)0) | |||
| 2140 | "Only implemented for MH_OBJECT && MH_KEXT_BUNDLE")((void)0); | |||
| 2141 | MachO::any_relocation_info RE = getRelocation(Rel); | |||
| 2142 | return getAnyRelocationAddress(RE); | |||
| 2143 | } | |||
| 2144 | ||||
| 2145 | symbol_iterator | |||
| 2146 | MachOObjectFile::getRelocationSymbol(DataRefImpl Rel) const { | |||
| 2147 | MachO::any_relocation_info RE = getRelocation(Rel); | |||
| 2148 | if (isRelocationScattered(RE)) | |||
| 2149 | return symbol_end(); | |||
| 2150 | ||||
| 2151 | uint32_t SymbolIdx = getPlainRelocationSymbolNum(RE); | |||
| 2152 | bool isExtern = getPlainRelocationExternal(RE); | |||
| 2153 | if (!isExtern) | |||
| 2154 | return symbol_end(); | |||
| 2155 | ||||
| 2156 | MachO::symtab_command S = getSymtabLoadCommand(); | |||
| 2157 | unsigned SymbolTableEntrySize = is64Bit() ? | |||
| 2158 | sizeof(MachO::nlist_64) : | |||
| 2159 | sizeof(MachO::nlist); | |||
| 2160 | uint64_t Offset = S.symoff + SymbolIdx * SymbolTableEntrySize; | |||
| 2161 | DataRefImpl Sym; | |||
| 2162 | Sym.p = reinterpret_cast<uintptr_t>(getPtr(*this, Offset)); | |||
| 2163 | return symbol_iterator(SymbolRef(Sym, this)); | |||
| 2164 | } | |||
| 2165 | ||||
| 2166 | section_iterator | |||
| 2167 | MachOObjectFile::getRelocationSection(DataRefImpl Rel) const { | |||
| 2168 | return section_iterator(getAnyRelocationSection(getRelocation(Rel))); | |||
| 2169 | } | |||
| 2170 | ||||
| 2171 | uint64_t MachOObjectFile::getRelocationType(DataRefImpl Rel) const { | |||
| 2172 | MachO::any_relocation_info RE = getRelocation(Rel); | |||
| 2173 | return getAnyRelocationType(RE); | |||
| 2174 | } | |||
| 2175 | ||||
| 2176 | void MachOObjectFile::getRelocationTypeName( | |||
| 2177 | DataRefImpl Rel, SmallVectorImpl<char> &Result) const { | |||
| 2178 | StringRef res; | |||
| 2179 | uint64_t RType = getRelocationType(Rel); | |||
| 2180 | ||||
| 2181 | unsigned Arch = this->getArch(); | |||
| 2182 | ||||
| 2183 | switch (Arch) { | |||
| 2184 | case Triple::x86: { | |||
| 2185 | static const char *const Table[] = { | |||
| 2186 | "GENERIC_RELOC_VANILLA", | |||
| 2187 | "GENERIC_RELOC_PAIR", | |||
| 2188 | "GENERIC_RELOC_SECTDIFF", | |||
| 2189 | "GENERIC_RELOC_PB_LA_PTR", | |||
| 2190 | "GENERIC_RELOC_LOCAL_SECTDIFF", | |||
| 2191 | "GENERIC_RELOC_TLV" }; | |||
| 2192 | ||||
| 2193 | if (RType > 5) | |||
| 2194 | res = "Unknown"; | |||
| 2195 | else | |||
| 2196 | res = Table[RType]; | |||
| 2197 | break; | |||
| 2198 | } | |||
| 2199 | case Triple::x86_64: { | |||
| 2200 | static const char *const Table[] = { | |||
| 2201 | "X86_64_RELOC_UNSIGNED", | |||
| 2202 | "X86_64_RELOC_SIGNED", | |||
| 2203 | "X86_64_RELOC_BRANCH", | |||
| 2204 | "X86_64_RELOC_GOT_LOAD", | |||
| 2205 | "X86_64_RELOC_GOT", | |||
| 2206 | "X86_64_RELOC_SUBTRACTOR", | |||
| 2207 | "X86_64_RELOC_SIGNED_1", | |||
| 2208 | "X86_64_RELOC_SIGNED_2", | |||
| 2209 | "X86_64_RELOC_SIGNED_4", | |||
| 2210 | "X86_64_RELOC_TLV" }; | |||
| 2211 | ||||
| 2212 | if (RType > 9) | |||
| 2213 | res = "Unknown"; | |||
| 2214 | else | |||
| 2215 | res = Table[RType]; | |||
| 2216 | break; | |||
| 2217 | } | |||
| 2218 | case Triple::arm: { | |||
| 2219 | static const char *const Table[] = { | |||
| 2220 | "ARM_RELOC_VANILLA", | |||
| 2221 | "ARM_RELOC_PAIR", | |||
| 2222 | "ARM_RELOC_SECTDIFF", | |||
| 2223 | "ARM_RELOC_LOCAL_SECTDIFF", | |||
| 2224 | "ARM_RELOC_PB_LA_PTR", | |||
| 2225 | "ARM_RELOC_BR24", | |||
| 2226 | "ARM_THUMB_RELOC_BR22", | |||
| 2227 | "ARM_THUMB_32BIT_BRANCH", | |||
| 2228 | "ARM_RELOC_HALF", | |||
| 2229 | "ARM_RELOC_HALF_SECTDIFF" }; | |||
| 2230 | ||||
| 2231 | if (RType > 9) | |||
| 2232 | res = "Unknown"; | |||
| 2233 | else | |||
| 2234 | res = Table[RType]; | |||
| 2235 | break; | |||
| 2236 | } | |||
| 2237 | case Triple::aarch64: | |||
| 2238 | case Triple::aarch64_32: { | |||
| 2239 | static const char *const Table[] = { | |||
| 2240 | "ARM64_RELOC_UNSIGNED", "ARM64_RELOC_SUBTRACTOR", | |||
| 2241 | "ARM64_RELOC_BRANCH26", "ARM64_RELOC_PAGE21", | |||
| 2242 | "ARM64_RELOC_PAGEOFF12", "ARM64_RELOC_GOT_LOAD_PAGE21", | |||
| 2243 | "ARM64_RELOC_GOT_LOAD_PAGEOFF12", "ARM64_RELOC_POINTER_TO_GOT", | |||
| 2244 | "ARM64_RELOC_TLVP_LOAD_PAGE21", "ARM64_RELOC_TLVP_LOAD_PAGEOFF12", | |||
| 2245 | "ARM64_RELOC_ADDEND" | |||
| 2246 | }; | |||
| 2247 | ||||
| 2248 | if (RType >= array_lengthof(Table)) | |||
| 2249 | res = "Unknown"; | |||
| 2250 | else | |||
| 2251 | res = Table[RType]; | |||
| 2252 | break; | |||
| 2253 | } | |||
| 2254 | case Triple::ppc: { | |||
| 2255 | static const char *const Table[] = { | |||
| 2256 | "PPC_RELOC_VANILLA", | |||
| 2257 | "PPC_RELOC_PAIR", | |||
| 2258 | "PPC_RELOC_BR14", | |||
| 2259 | "PPC_RELOC_BR24", | |||
| 2260 | "PPC_RELOC_HI16", | |||
| 2261 | "PPC_RELOC_LO16", | |||
| 2262 | "PPC_RELOC_HA16", | |||
| 2263 | "PPC_RELOC_LO14", | |||
| 2264 | "PPC_RELOC_SECTDIFF", | |||
| 2265 | "PPC_RELOC_PB_LA_PTR", | |||
| 2266 | "PPC_RELOC_HI16_SECTDIFF", | |||
| 2267 | "PPC_RELOC_LO16_SECTDIFF", | |||
| 2268 | "PPC_RELOC_HA16_SECTDIFF", | |||
| 2269 | "PPC_RELOC_JBSR", | |||
| 2270 | "PPC_RELOC_LO14_SECTDIFF", | |||
| 2271 | "PPC_RELOC_LOCAL_SECTDIFF" }; | |||
| 2272 | ||||
| 2273 | if (RType > 15) | |||
| 2274 | res = "Unknown"; | |||
| 2275 | else | |||
| 2276 | res = Table[RType]; | |||
| 2277 | break; | |||
| 2278 | } | |||
| 2279 | case Triple::UnknownArch: | |||
| 2280 | res = "Unknown"; | |||
| 2281 | break; | |||
| 2282 | } | |||
| 2283 | Result.append(res.begin(), res.end()); | |||
| 2284 | } | |||
| 2285 | ||||
| 2286 | uint8_t MachOObjectFile::getRelocationLength(DataRefImpl Rel) const { | |||
| 2287 | MachO::any_relocation_info RE = getRelocation(Rel); | |||
| 2288 | return getAnyRelocationLength(RE); | |||
| 2289 | } | |||
| 2290 | ||||
| 2291 | // | |||
| 2292 | // guessLibraryShortName() is passed a name of a dynamic library and returns a | |||
| 2293 | // guess on what the short name is. Then name is returned as a substring of the | |||
| 2294 | // StringRef Name passed in. The name of the dynamic library is recognized as | |||
| 2295 | // a framework if it has one of the two following forms: | |||
| 2296 | // Foo.framework/Versions/A/Foo | |||
| 2297 | // Foo.framework/Foo | |||
| 2298 | // Where A and Foo can be any string. And may contain a trailing suffix | |||
| 2299 | // starting with an underbar. If the Name is recognized as a framework then | |||
| 2300 | // isFramework is set to true else it is set to false. If the Name has a | |||
| 2301 | // suffix then Suffix is set to the substring in Name that contains the suffix | |||
| 2302 | // else it is set to a NULL StringRef. | |||
| 2303 | // | |||
| 2304 | // The Name of the dynamic library is recognized as a library name if it has | |||
| 2305 | // one of the two following forms: | |||
| 2306 | // libFoo.A.dylib | |||
| 2307 | // libFoo.dylib | |||
| 2308 | // | |||
| 2309 | // The library may have a suffix trailing the name Foo of the form: | |||
| 2310 | // libFoo_profile.A.dylib | |||
| 2311 | // libFoo_profile.dylib | |||
| 2312 | // These dyld image suffixes are separated from the short name by a '_' | |||
| 2313 | // character. Because the '_' character is commonly used to separate words in | |||
| 2314 | // filenames guessLibraryShortName() cannot reliably separate a dylib's short | |||
| 2315 | // name from an arbitrary image suffix; imagine if both the short name and the | |||
| 2316 | // suffix contains an '_' character! To better deal with this ambiguity, | |||
| 2317 | // guessLibraryShortName() will recognize only "_debug" and "_profile" as valid | |||
| 2318 | // Suffix values. Calling code needs to be tolerant of guessLibraryShortName() | |||
| 2319 | // guessing incorrectly. | |||
| 2320 | // | |||
| 2321 | // The Name of the dynamic library is also recognized as a library name if it | |||
| 2322 | // has the following form: | |||
| 2323 | // Foo.qtx | |||
| 2324 | // | |||
| 2325 | // If the Name of the dynamic library is none of the forms above then a NULL | |||
| 2326 | // StringRef is returned. | |||
| 2327 | StringRef MachOObjectFile::guessLibraryShortName(StringRef Name, | |||
| 2328 | bool &isFramework, | |||
| 2329 | StringRef &Suffix) { | |||
| 2330 | StringRef Foo, F, DotFramework, V, Dylib, Lib, Dot, Qtx; | |||
| 2331 | size_t a, b, c, d, Idx; | |||
| 2332 | ||||
| 2333 | isFramework = false; | |||
| 2334 | Suffix = StringRef(); | |||
| 2335 | ||||
| 2336 | // Pull off the last component and make Foo point to it | |||
| 2337 | a = Name.rfind('/'); | |||
| 2338 | if (a == Name.npos || a == 0) | |||
| 2339 | goto guess_library; | |||
| 2340 | Foo = Name.slice(a+1, Name.npos); | |||
| 2341 | ||||
| 2342 | // Look for a suffix starting with a '_' | |||
| 2343 | Idx = Foo.rfind('_'); | |||
| 2344 | if (Idx != Foo.npos && Foo.size() >= 2) { | |||
| 2345 | Suffix = Foo.slice(Idx, Foo.npos); | |||
| 2346 | if (Suffix != "_debug" && Suffix != "_profile") | |||
| 2347 | Suffix = StringRef(); | |||
| 2348 | else | |||
| 2349 | Foo = Foo.slice(0, Idx); | |||
| 2350 | } | |||
| 2351 | ||||
| 2352 | // First look for the form Foo.framework/Foo | |||
| 2353 | b = Name.rfind('/', a); | |||
| 2354 | if (b == Name.npos) | |||
| 2355 | Idx = 0; | |||
| 2356 | else | |||
| 2357 | Idx = b+1; | |||
| 2358 | F = Name.slice(Idx, Idx + Foo.size()); | |||
| 2359 | DotFramework = Name.slice(Idx + Foo.size(), | |||
| 2360 | Idx + Foo.size() + sizeof(".framework/")-1); | |||
| 2361 | if (F == Foo && DotFramework == ".framework/") { | |||
| 2362 | isFramework = true; | |||
| 2363 | return Foo; | |||
| 2364 | } | |||
| 2365 | ||||
| 2366 | // Next look for the form Foo.framework/Versions/A/Foo | |||
| 2367 | if (b == Name.npos) | |||
| 2368 | goto guess_library; | |||
| 2369 | c = Name.rfind('/', b); | |||
| 2370 | if (c == Name.npos || c == 0) | |||
| 2371 | goto guess_library; | |||
| 2372 | V = Name.slice(c+1, Name.npos); | |||
| 2373 | if (!V.startswith("Versions/")) | |||
| 2374 | goto guess_library; | |||
| 2375 | d = Name.rfind('/', c); | |||
| 2376 | if (d == Name.npos) | |||
| 2377 | Idx = 0; | |||
| 2378 | else | |||
| 2379 | Idx = d+1; | |||
| 2380 | F = Name.slice(Idx, Idx + Foo.size()); | |||
| 2381 | DotFramework = Name.slice(Idx + Foo.size(), | |||
| 2382 | Idx + Foo.size() + sizeof(".framework/")-1); | |||
| 2383 | if (F == Foo && DotFramework == ".framework/") { | |||
| 2384 | isFramework = true; | |||
| 2385 | return Foo; | |||
| 2386 | } | |||
| 2387 | ||||
| 2388 | guess_library: | |||
| 2389 | // pull off the suffix after the "." and make a point to it | |||
| 2390 | a = Name.rfind('.'); | |||
| 2391 | if (a == Name.npos || a == 0) | |||
| 2392 | return StringRef(); | |||
| 2393 | Dylib = Name.slice(a, Name.npos); | |||
| 2394 | if (Dylib != ".dylib") | |||
| 2395 | goto guess_qtx; | |||
| 2396 | ||||
| 2397 | // First pull off the version letter for the form Foo.A.dylib if any. | |||
| 2398 | if (a >= 3) { | |||
| 2399 | Dot = Name.slice(a-2, a-1); | |||
| 2400 | if (Dot == ".") | |||
| 2401 | a = a - 2; | |||
| 2402 | } | |||
| 2403 | ||||
| 2404 | b = Name.rfind('/', a); | |||
| 2405 | if (b == Name.npos) | |||
| 2406 | b = 0; | |||
| 2407 | else | |||
| 2408 | b = b+1; | |||
| 2409 | // ignore any suffix after an underbar like Foo_profile.A.dylib | |||
| 2410 | Idx = Name.rfind('_'); | |||
| 2411 | if (Idx != Name.npos && Idx != b) { | |||
| 2412 | Lib = Name.slice(b, Idx); | |||
| 2413 | Suffix = Name.slice(Idx, a); | |||
| 2414 | if (Suffix != "_debug" && Suffix != "_profile") { | |||
| 2415 | Suffix = StringRef(); | |||
| 2416 | Lib = Name.slice(b, a); | |||
| 2417 | } | |||
| 2418 | } | |||
| 2419 | else | |||
| 2420 | Lib = Name.slice(b, a); | |||
| 2421 | // There are incorrect library names of the form: | |||
| 2422 | // libATS.A_profile.dylib so check for these. | |||
| 2423 | if (Lib.size() >= 3) { | |||
| 2424 | Dot = Lib.slice(Lib.size()-2, Lib.size()-1); | |||
| 2425 | if (Dot == ".") | |||
| 2426 | Lib = Lib.slice(0, Lib.size()-2); | |||
| 2427 | } | |||
| 2428 | return Lib; | |||
| 2429 | ||||
| 2430 | guess_qtx: | |||
| 2431 | Qtx = Name.slice(a, Name.npos); | |||
| 2432 | if (Qtx != ".qtx") | |||
| 2433 | return StringRef(); | |||
| 2434 | b = Name.rfind('/', a); | |||
| 2435 | if (b == Name.npos) | |||
| 2436 | Lib = Name.slice(0, a); | |||
| 2437 | else | |||
| 2438 | Lib = Name.slice(b+1, a); | |||
| 2439 | // There are library names of the form: QT.A.qtx so check for these. | |||
| 2440 | if (Lib.size() >= 3) { | |||
| 2441 | Dot = Lib.slice(Lib.size()-2, Lib.size()-1); | |||
| 2442 | if (Dot == ".") | |||
| 2443 | Lib = Lib.slice(0, Lib.size()-2); | |||
| 2444 | } | |||
| 2445 | return Lib; | |||
| 2446 | } | |||
| 2447 | ||||
| 2448 | // getLibraryShortNameByIndex() is used to get the short name of the library | |||
| 2449 | // for an undefined symbol in a linked Mach-O binary that was linked with the | |||
| 2450 | // normal two-level namespace default (that is MH_TWOLEVEL in the header). | |||
| 2451 | // It is passed the index (0 - based) of the library as translated from | |||
| 2452 | // GET_LIBRARY_ORDINAL (1 - based). | |||
| 2453 | std::error_code MachOObjectFile::getLibraryShortNameByIndex(unsigned Index, | |||
| 2454 | StringRef &Res) const { | |||
| 2455 | if (Index >= Libraries.size()) | |||
| 2456 | return object_error::parse_failed; | |||
| 2457 | ||||
| 2458 | // If the cache of LibrariesShortNames is not built up do that first for | |||
| 2459 | // all the Libraries. | |||
| 2460 | if (LibrariesShortNames.size() == 0) { | |||
| 2461 | for (unsigned i = 0; i < Libraries.size(); i++) { | |||
| 2462 | auto CommandOrErr = | |||
| 2463 | getStructOrErr<MachO::dylib_command>(*this, Libraries[i]); | |||
| 2464 | if (!CommandOrErr) | |||
| 2465 | return object_error::parse_failed; | |||
| 2466 | MachO::dylib_command D = CommandOrErr.get(); | |||
| 2467 | if (D.dylib.name >= D.cmdsize) | |||
| 2468 | return object_error::parse_failed; | |||
| 2469 | const char *P = (const char *)(Libraries[i]) + D.dylib.name; | |||
| 2470 | StringRef Name = StringRef(P); | |||
| 2471 | if (D.dylib.name+Name.size() >= D.cmdsize) | |||
| 2472 | return object_error::parse_failed; | |||
| 2473 | StringRef Suffix; | |||
| 2474 | bool isFramework; | |||
| 2475 | StringRef shortName = guessLibraryShortName(Name, isFramework, Suffix); | |||
| 2476 | if (shortName.empty()) | |||
| 2477 | LibrariesShortNames.push_back(Name); | |||
| 2478 | else | |||
| 2479 | LibrariesShortNames.push_back(shortName); | |||
| 2480 | } | |||
| 2481 | } | |||
| 2482 | ||||
| 2483 | Res = LibrariesShortNames[Index]; | |||
| 2484 | return std::error_code(); | |||
| 2485 | } | |||
| 2486 | ||||
| 2487 | uint32_t MachOObjectFile::getLibraryCount() const { | |||
| 2488 | return Libraries.size(); | |||
| 2489 | } | |||
| 2490 | ||||
| 2491 | section_iterator | |||
| 2492 | MachOObjectFile::getRelocationRelocatedSection(relocation_iterator Rel) const { | |||
| 2493 | DataRefImpl Sec; | |||
| 2494 | Sec.d.a = Rel->getRawDataRefImpl().d.a; | |||
| 2495 | return section_iterator(SectionRef(Sec, this)); | |||
| 2496 | } | |||
| 2497 | ||||
| 2498 | basic_symbol_iterator MachOObjectFile::symbol_begin() const { | |||
| 2499 | DataRefImpl DRI; | |||
| 2500 | MachO::symtab_command Symtab = getSymtabLoadCommand(); | |||
| 2501 | if (!SymtabLoadCmd || Symtab.nsyms == 0) | |||
| 2502 | return basic_symbol_iterator(SymbolRef(DRI, this)); | |||
| 2503 | ||||
| 2504 | return getSymbolByIndex(0); | |||
| 2505 | } | |||
| 2506 | ||||
| 2507 | basic_symbol_iterator MachOObjectFile::symbol_end() const { | |||
| 2508 | DataRefImpl DRI; | |||
| 2509 | MachO::symtab_command Symtab = getSymtabLoadCommand(); | |||
| 2510 | if (!SymtabLoadCmd || Symtab.nsyms == 0) | |||
| 2511 | return basic_symbol_iterator(SymbolRef(DRI, this)); | |||
| 2512 | ||||
| 2513 | unsigned SymbolTableEntrySize = is64Bit() ? | |||
| 2514 | sizeof(MachO::nlist_64) : | |||
| 2515 | sizeof(MachO::nlist); | |||
| 2516 | unsigned Offset = Symtab.symoff + | |||
| 2517 | Symtab.nsyms * SymbolTableEntrySize; | |||
| 2518 | DRI.p = reinterpret_cast<uintptr_t>(getPtr(*this, Offset)); | |||
| 2519 | return basic_symbol_iterator(SymbolRef(DRI, this)); | |||
| 2520 | } | |||
| 2521 | ||||
| 2522 | symbol_iterator MachOObjectFile::getSymbolByIndex(unsigned Index) const { | |||
| 2523 | MachO::symtab_command Symtab = getSymtabLoadCommand(); | |||
| 2524 | if (!SymtabLoadCmd || Index >= Symtab.nsyms) | |||
| 2525 | report_fatal_error("Requested symbol index is out of range."); | |||
| 2526 | unsigned SymbolTableEntrySize = | |||
| 2527 | is64Bit() ? sizeof(MachO::nlist_64) : sizeof(MachO::nlist); | |||
| 2528 | DataRefImpl DRI; | |||
| 2529 | DRI.p = reinterpret_cast<uintptr_t>(getPtr(*this, Symtab.symoff)); | |||
| 2530 | DRI.p += Index * SymbolTableEntrySize; | |||
| 2531 | return basic_symbol_iterator(SymbolRef(DRI, this)); | |||
| 2532 | } | |||
| 2533 | ||||
| 2534 | uint64_t MachOObjectFile::getSymbolIndex(DataRefImpl Symb) const { | |||
| 2535 | MachO::symtab_command Symtab = getSymtabLoadCommand(); | |||
| 2536 | if (!SymtabLoadCmd) | |||
| 2537 | report_fatal_error("getSymbolIndex() called with no symbol table symbol"); | |||
| 2538 | unsigned SymbolTableEntrySize = | |||
| 2539 | is64Bit() ? sizeof(MachO::nlist_64) : sizeof(MachO::nlist); | |||
| 2540 | DataRefImpl DRIstart; | |||
| 2541 | DRIstart.p = reinterpret_cast<uintptr_t>(getPtr(*this, Symtab.symoff)); | |||
| 2542 | uint64_t Index = (Symb.p - DRIstart.p) / SymbolTableEntrySize; | |||
| 2543 | return Index; | |||
| 2544 | } | |||
| 2545 | ||||
| 2546 | section_iterator MachOObjectFile::section_begin() const { | |||
| 2547 | DataRefImpl DRI; | |||
| 2548 | return section_iterator(SectionRef(DRI, this)); | |||
| 2549 | } | |||
| 2550 | ||||
| 2551 | section_iterator MachOObjectFile::section_end() const { | |||
| 2552 | DataRefImpl DRI; | |||
| 2553 | DRI.d.a = Sections.size(); | |||
| 2554 | return section_iterator(SectionRef(DRI, this)); | |||
| 2555 | } | |||
| 2556 | ||||
| 2557 | uint8_t MachOObjectFile::getBytesInAddress() const { | |||
| 2558 | return is64Bit() ? 8 : 4; | |||
| 2559 | } | |||
| 2560 | ||||
| 2561 | StringRef MachOObjectFile::getFileFormatName() const { | |||
| 2562 | unsigned CPUType = getCPUType(*this); | |||
| 2563 | if (!is64Bit()) { | |||
| 2564 | switch (CPUType) { | |||
| 2565 | case MachO::CPU_TYPE_I386: | |||
| 2566 | return "Mach-O 32-bit i386"; | |||
| 2567 | case MachO::CPU_TYPE_ARM: | |||
| 2568 | return "Mach-O arm"; | |||
| 2569 | case MachO::CPU_TYPE_ARM64_32: | |||
| 2570 | return "Mach-O arm64 (ILP32)"; | |||
| 2571 | case MachO::CPU_TYPE_POWERPC: | |||
| 2572 | return "Mach-O 32-bit ppc"; | |||
| 2573 | default: | |||
| 2574 | return "Mach-O 32-bit unknown"; | |||
| 2575 | } | |||
| 2576 | } | |||
| 2577 | ||||
| 2578 | switch (CPUType) { | |||
| 2579 | case MachO::CPU_TYPE_X86_64: | |||
| 2580 | return "Mach-O 64-bit x86-64"; | |||
| 2581 | case MachO::CPU_TYPE_ARM64: | |||
| 2582 | return "Mach-O arm64"; | |||
| 2583 | case MachO::CPU_TYPE_POWERPC64: | |||
| 2584 | return "Mach-O 64-bit ppc64"; | |||
| 2585 | default: | |||
| 2586 | return "Mach-O 64-bit unknown"; | |||
| 2587 | } | |||
| 2588 | } | |||
| 2589 | ||||
| 2590 | Triple::ArchType MachOObjectFile::getArch(uint32_t CPUType, uint32_t CPUSubType) { | |||
| 2591 | switch (CPUType) { | |||
| 2592 | case MachO::CPU_TYPE_I386: | |||
| 2593 | return Triple::x86; | |||
| 2594 | case MachO::CPU_TYPE_X86_64: | |||
| 2595 | return Triple::x86_64; | |||
| 2596 | case MachO::CPU_TYPE_ARM: | |||
| 2597 | return Triple::arm; | |||
| 2598 | case MachO::CPU_TYPE_ARM64: | |||
| 2599 | return Triple::aarch64; | |||
| 2600 | case MachO::CPU_TYPE_ARM64_32: | |||
| 2601 | return Triple::aarch64_32; | |||
| 2602 | case MachO::CPU_TYPE_POWERPC: | |||
| 2603 | return Triple::ppc; | |||
| 2604 | case MachO::CPU_TYPE_POWERPC64: | |||
| 2605 | return Triple::ppc64; | |||
| 2606 | default: | |||
| 2607 | return Triple::UnknownArch; | |||
| 2608 | } | |||
| 2609 | } | |||
| 2610 | ||||
| 2611 | Triple MachOObjectFile::getArchTriple(uint32_t CPUType, uint32_t CPUSubType, | |||
| 2612 | const char **McpuDefault, | |||
| 2613 | const char **ArchFlag) { | |||
| 2614 | if (McpuDefault) | |||
| 2615 | *McpuDefault = nullptr; | |||
| 2616 | if (ArchFlag) | |||
| 2617 | *ArchFlag = nullptr; | |||
| 2618 | ||||
| 2619 | switch (CPUType) { | |||
| 2620 | case MachO::CPU_TYPE_I386: | |||
| 2621 | switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) { | |||
| 2622 | case MachO::CPU_SUBTYPE_I386_ALL: | |||
| 2623 | if (ArchFlag) | |||
| 2624 | *ArchFlag = "i386"; | |||
| 2625 | return Triple("i386-apple-darwin"); | |||
| 2626 | default: | |||
| 2627 | return Triple(); | |||
| 2628 | } | |||
| 2629 | case MachO::CPU_TYPE_X86_64: | |||
| 2630 | switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) { | |||
| 2631 | case MachO::CPU_SUBTYPE_X86_64_ALL: | |||
| 2632 | if (ArchFlag) | |||
| 2633 | *ArchFlag = "x86_64"; | |||
| 2634 | return Triple("x86_64-apple-darwin"); | |||
| 2635 | case MachO::CPU_SUBTYPE_X86_64_H: | |||
| 2636 | if (ArchFlag) | |||
| 2637 | *ArchFlag = "x86_64h"; | |||
| 2638 | return Triple("x86_64h-apple-darwin"); | |||
| 2639 | default: | |||
| 2640 | return Triple(); | |||
| 2641 | } | |||
| 2642 | case MachO::CPU_TYPE_ARM: | |||
| 2643 | switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) { | |||
| 2644 | case MachO::CPU_SUBTYPE_ARM_V4T: | |||
| 2645 | if (ArchFlag) | |||
| 2646 | *ArchFlag = "armv4t"; | |||
| 2647 | return Triple("armv4t-apple-darwin"); | |||
| 2648 | case MachO::CPU_SUBTYPE_ARM_V5TEJ: | |||
| 2649 | if (ArchFlag) | |||
| 2650 | *ArchFlag = "armv5e"; | |||
| 2651 | return Triple("armv5e-apple-darwin"); | |||
| 2652 | case MachO::CPU_SUBTYPE_ARM_XSCALE: | |||
| 2653 | if (ArchFlag) | |||
| 2654 | *ArchFlag = "xscale"; | |||
| 2655 | return Triple("xscale-apple-darwin"); | |||
| 2656 | case MachO::CPU_SUBTYPE_ARM_V6: | |||
| 2657 | if (ArchFlag) | |||
| 2658 | *ArchFlag = "armv6"; | |||
| 2659 | return Triple("armv6-apple-darwin"); | |||
| 2660 | case MachO::CPU_SUBTYPE_ARM_V6M: | |||
| 2661 | if (McpuDefault) | |||
| 2662 | *McpuDefault = "cortex-m0"; | |||
| 2663 | if (ArchFlag) | |||
| 2664 | *ArchFlag = "armv6m"; | |||
| 2665 | return Triple("armv6m-apple-darwin"); | |||
| 2666 | case MachO::CPU_SUBTYPE_ARM_V7: | |||
| 2667 | if (ArchFlag) | |||
| 2668 | *ArchFlag = "armv7"; | |||
| 2669 | return Triple("armv7-apple-darwin"); | |||
| 2670 | case MachO::CPU_SUBTYPE_ARM_V7EM: | |||
| 2671 | if (McpuDefault) | |||
| 2672 | *McpuDefault = "cortex-m4"; | |||
| 2673 | if (ArchFlag) | |||
| 2674 | *ArchFlag = "armv7em"; | |||
| 2675 | return Triple("thumbv7em-apple-darwin"); | |||
| 2676 | case MachO::CPU_SUBTYPE_ARM_V7K: | |||
| 2677 | if (McpuDefault) | |||
| 2678 | *McpuDefault = "cortex-a7"; | |||
| 2679 | if (ArchFlag) | |||
| 2680 | *ArchFlag = "armv7k"; | |||
| 2681 | return Triple("armv7k-apple-darwin"); | |||
| 2682 | case MachO::CPU_SUBTYPE_ARM_V7M: | |||
| 2683 | if (McpuDefault) | |||
| 2684 | *McpuDefault = "cortex-m3"; | |||
| 2685 | if (ArchFlag) | |||
| 2686 | *ArchFlag = "armv7m"; | |||
| 2687 | return Triple("thumbv7m-apple-darwin"); | |||
| 2688 | case MachO::CPU_SUBTYPE_ARM_V7S: | |||
| 2689 | if (McpuDefault) | |||
| 2690 | *McpuDefault = "cortex-a7"; | |||
| 2691 | if (ArchFlag) | |||
| 2692 | *ArchFlag = "armv7s"; | |||
| 2693 | return Triple("armv7s-apple-darwin"); | |||
| 2694 | default: | |||
| 2695 | return Triple(); | |||
| 2696 | } | |||
| 2697 | case MachO::CPU_TYPE_ARM64: | |||
| 2698 | switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) { | |||
| 2699 | case MachO::CPU_SUBTYPE_ARM64_ALL: | |||
| 2700 | if (McpuDefault) | |||
| 2701 | *McpuDefault = "cyclone"; | |||
| 2702 | if (ArchFlag) | |||
| 2703 | *ArchFlag = "arm64"; | |||
| 2704 | return Triple("arm64-apple-darwin"); | |||
| 2705 | case MachO::CPU_SUBTYPE_ARM64E: | |||
| 2706 | if (McpuDefault) | |||
| 2707 | *McpuDefault = "apple-a12"; | |||
| 2708 | if (ArchFlag) | |||
| 2709 | *ArchFlag = "arm64e"; | |||
| 2710 | return Triple("arm64e-apple-darwin"); | |||
| 2711 | default: | |||
| 2712 | return Triple(); | |||
| 2713 | } | |||
| 2714 | case MachO::CPU_TYPE_ARM64_32: | |||
| 2715 | switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) { | |||
| 2716 | case MachO::CPU_SUBTYPE_ARM64_32_V8: | |||
| 2717 | if (McpuDefault) | |||
| 2718 | *McpuDefault = "cyclone"; | |||
| 2719 | if (ArchFlag) | |||
| 2720 | *ArchFlag = "arm64_32"; | |||
| 2721 | return Triple("arm64_32-apple-darwin"); | |||
| 2722 | default: | |||
| 2723 | return Triple(); | |||
| 2724 | } | |||
| 2725 | case MachO::CPU_TYPE_POWERPC: | |||
| 2726 | switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) { | |||
| 2727 | case MachO::CPU_SUBTYPE_POWERPC_ALL: | |||
| 2728 | if (ArchFlag) | |||
| 2729 | *ArchFlag = "ppc"; | |||
| 2730 | return Triple("ppc-apple-darwin"); | |||
| 2731 | default: | |||
| 2732 | return Triple(); | |||
| 2733 | } | |||
| 2734 | case MachO::CPU_TYPE_POWERPC64: | |||
| 2735 | switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) { | |||
| 2736 | case MachO::CPU_SUBTYPE_POWERPC_ALL: | |||
| 2737 | if (ArchFlag) | |||
| 2738 | *ArchFlag = "ppc64"; | |||
| 2739 | return Triple("ppc64-apple-darwin"); | |||
| 2740 | default: | |||
| 2741 | return Triple(); | |||
| 2742 | } | |||
| 2743 | default: | |||
| 2744 | return Triple(); | |||
| 2745 | } | |||
| 2746 | } | |||
| 2747 | ||||
| 2748 | Triple MachOObjectFile::getHostArch() { | |||
| 2749 | return Triple(sys::getDefaultTargetTriple()); | |||
| 2750 | } | |||
| 2751 | ||||
| 2752 | bool MachOObjectFile::isValidArch(StringRef ArchFlag) { | |||
| 2753 | auto validArchs = getValidArchs(); | |||
| 2754 | return llvm::is_contained(validArchs, ArchFlag); | |||
| 2755 | } | |||
| 2756 | ||||
| 2757 | ArrayRef<StringRef> MachOObjectFile::getValidArchs() { | |||
| 2758 | static const std::array<StringRef, 18> ValidArchs = {{ | |||
| 2759 | "i386", | |||
| 2760 | "x86_64", | |||
| 2761 | "x86_64h", | |||
| 2762 | "armv4t", | |||
| 2763 | "arm", | |||
| 2764 | "armv5e", | |||
| 2765 | "armv6", | |||
| 2766 | "armv6m", | |||
| 2767 | "armv7", | |||
| 2768 | "armv7em", | |||
| 2769 | "armv7k", | |||
| 2770 | "armv7m", | |||
| 2771 | "armv7s", | |||
| 2772 | "arm64", | |||
| 2773 | "arm64e", | |||
| 2774 | "arm64_32", | |||
| 2775 | "ppc", | |||
| 2776 | "ppc64", | |||
| 2777 | }}; | |||
| 2778 | ||||
| 2779 | return ValidArchs; | |||
| 2780 | } | |||
| 2781 | ||||
| 2782 | Triple::ArchType MachOObjectFile::getArch() const { | |||
| 2783 | return getArch(getCPUType(*this), getCPUSubType(*this)); | |||
| 2784 | } | |||
| 2785 | ||||
| 2786 | Triple MachOObjectFile::getArchTriple(const char **McpuDefault) const { | |||
| 2787 | return getArchTriple(Header.cputype, Header.cpusubtype, McpuDefault); | |||
| 2788 | } | |||
| 2789 | ||||
| 2790 | relocation_iterator MachOObjectFile::section_rel_begin(unsigned Index) const { | |||
| 2791 | DataRefImpl DRI; | |||
| 2792 | DRI.d.a = Index; | |||
| 2793 | return section_rel_begin(DRI); | |||
| 2794 | } | |||
| 2795 | ||||
| 2796 | relocation_iterator MachOObjectFile::section_rel_end(unsigned Index) const { | |||
| 2797 | DataRefImpl DRI; | |||
| 2798 | DRI.d.a = Index; | |||
| 2799 | return section_rel_end(DRI); | |||
| 2800 | } | |||
| 2801 | ||||
| 2802 | dice_iterator MachOObjectFile::begin_dices() const { | |||
| 2803 | DataRefImpl DRI; | |||
| 2804 | if (!DataInCodeLoadCmd) | |||
| 2805 | return dice_iterator(DiceRef(DRI, this)); | |||
| 2806 | ||||
| 2807 | MachO::linkedit_data_command DicLC = getDataInCodeLoadCommand(); | |||
| 2808 | DRI.p = reinterpret_cast<uintptr_t>(getPtr(*this, DicLC.dataoff)); | |||
| 2809 | return dice_iterator(DiceRef(DRI, this)); | |||
| 2810 | } | |||
| 2811 | ||||
| 2812 | dice_iterator MachOObjectFile::end_dices() const { | |||
| 2813 | DataRefImpl DRI; | |||
| 2814 | if (!DataInCodeLoadCmd) | |||
| 2815 | return dice_iterator(DiceRef(DRI, this)); | |||
| 2816 | ||||
| 2817 | MachO::linkedit_data_command DicLC = getDataInCodeLoadCommand(); | |||
| 2818 | unsigned Offset = DicLC.dataoff + DicLC.datasize; | |||
| 2819 | DRI.p = reinterpret_cast<uintptr_t>(getPtr(*this, Offset)); | |||
| 2820 | return dice_iterator(DiceRef(DRI, this)); | |||
| 2821 | } | |||
| 2822 | ||||
| 2823 | ExportEntry::ExportEntry(Error *E, const MachOObjectFile *O, | |||
| 2824 | ArrayRef<uint8_t> T) : E(E), O(O), Trie(T) {} | |||
| 2825 | ||||
| 2826 | void ExportEntry::moveToFirst() { | |||
| 2827 | ErrorAsOutParameter ErrAsOutParam(E); | |||
| 2828 | pushNode(0); | |||
| 2829 | if (*E) | |||
| 2830 | return; | |||
| 2831 | pushDownUntilBottom(); | |||
| 2832 | } | |||
| 2833 | ||||
| 2834 | void ExportEntry::moveToEnd() { | |||
| 2835 | Stack.clear(); | |||
| 2836 | Done = true; | |||
| 2837 | } | |||
| 2838 | ||||
| 2839 | bool ExportEntry::operator==(const ExportEntry &Other) const { | |||
| 2840 | // Common case, one at end, other iterating from begin. | |||
| 2841 | if (Done || Other.Done) | |||
| 2842 | return (Done == Other.Done); | |||
| 2843 | // Not equal if different stack sizes. | |||
| 2844 | if (Stack.size() != Other.Stack.size()) | |||
| 2845 | return false; | |||
| 2846 | // Not equal if different cumulative strings. | |||
| 2847 | if (!CumulativeString.equals(Other.CumulativeString)) | |||
| 2848 | return false; | |||
| 2849 | // Equal if all nodes in both stacks match. | |||
| 2850 | for (unsigned i=0; i < Stack.size(); ++i) { | |||
| 2851 | if (Stack[i].Start != Other.Stack[i].Start) | |||
| 2852 | return false; | |||
| 2853 | } | |||
| 2854 | return true; | |||
| 2855 | } | |||
| 2856 | ||||
| 2857 | uint64_t ExportEntry::readULEB128(const uint8_t *&Ptr, const char **error) { | |||
| 2858 | unsigned Count; | |||
| 2859 | uint64_t Result = decodeULEB128(Ptr, &Count, Trie.end(), error); | |||
| 2860 | Ptr += Count; | |||
| 2861 | if (Ptr > Trie.end()) | |||
| 2862 | Ptr = Trie.end(); | |||
| 2863 | return Result; | |||
| 2864 | } | |||
| 2865 | ||||
| 2866 | StringRef ExportEntry::name() const { | |||
| 2867 | return CumulativeString; | |||
| 2868 | } | |||
| 2869 | ||||
| 2870 | uint64_t ExportEntry::flags() const { | |||
| 2871 | return Stack.back().Flags; | |||
| 2872 | } | |||
| 2873 | ||||
| 2874 | uint64_t ExportEntry::address() const { | |||
| 2875 | return Stack.back().Address; | |||
| 2876 | } | |||
| 2877 | ||||
| 2878 | uint64_t ExportEntry::other() const { | |||
| 2879 | return Stack.back().Other; | |||
| 2880 | } | |||
| 2881 | ||||
| 2882 | StringRef ExportEntry::otherName() const { | |||
| 2883 | const char* ImportName = Stack.back().ImportName; | |||
| 2884 | if (ImportName) | |||
| 2885 | return StringRef(ImportName); | |||
| 2886 | return StringRef(); | |||
| 2887 | } | |||
| 2888 | ||||
| 2889 | uint32_t ExportEntry::nodeOffset() const { | |||
| 2890 | return Stack.back().Start - Trie.begin(); | |||
| 2891 | } | |||
| 2892 | ||||
| 2893 | ExportEntry::NodeState::NodeState(const uint8_t *Ptr) | |||
| 2894 | : Start(Ptr), Current(Ptr) {} | |||
| 2895 | ||||
| 2896 | void ExportEntry::pushNode(uint64_t offset) { | |||
| 2897 | ErrorAsOutParameter ErrAsOutParam(E); | |||
| 2898 | const uint8_t *Ptr = Trie.begin() + offset; | |||
| 2899 | NodeState State(Ptr); | |||
| 2900 | const char *error; | |||
| 2901 | uint64_t ExportInfoSize = readULEB128(State.Current, &error); | |||
| 2902 | if (error) { | |||
| 2903 | *E = malformedError("export info size " + Twine(error) + | |||
| 2904 | " in export trie data at node: 0x" + | |||
| 2905 | Twine::utohexstr(offset)); | |||
| 2906 | moveToEnd(); | |||
| 2907 | return; | |||
| 2908 | } | |||
| 2909 | State.IsExportNode = (ExportInfoSize != 0); | |||
| 2910 | const uint8_t* Children = State.Current + ExportInfoSize; | |||
| 2911 | if (Children > Trie.end()) { | |||
| 2912 | *E = malformedError( | |||
| 2913 | "export info size: 0x" + Twine::utohexstr(ExportInfoSize) + | |||
| 2914 | " in export trie data at node: 0x" + Twine::utohexstr(offset) + | |||
| 2915 | " too big and extends past end of trie data"); | |||
| 2916 | moveToEnd(); | |||
| 2917 | return; | |||
| 2918 | } | |||
| 2919 | if (State.IsExportNode) { | |||
| 2920 | const uint8_t *ExportStart = State.Current; | |||
| 2921 | State.Flags = readULEB128(State.Current, &error); | |||
| 2922 | if (error) { | |||
| 2923 | *E = malformedError("flags " + Twine(error) + | |||
| 2924 | " in export trie data at node: 0x" + | |||
| 2925 | Twine::utohexstr(offset)); | |||
| 2926 | moveToEnd(); | |||
| 2927 | return; | |||
| 2928 | } | |||
| 2929 | uint64_t Kind = State.Flags & MachO::EXPORT_SYMBOL_FLAGS_KIND_MASK; | |||
| 2930 | if (State.Flags != 0 && | |||
| 2931 | (Kind != MachO::EXPORT_SYMBOL_FLAGS_KIND_REGULAR && | |||
| 2932 | Kind != MachO::EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE && | |||
| 2933 | Kind != MachO::EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL)) { | |||
| 2934 | *E = malformedError( | |||
| 2935 | "unsupported exported symbol kind: " + Twine((int)Kind) + | |||
| 2936 | " in flags: 0x" + Twine::utohexstr(State.Flags) + | |||
| 2937 | " in export trie data at node: 0x" + Twine::utohexstr(offset)); | |||
| 2938 | moveToEnd(); | |||
| 2939 | return; | |||
| 2940 | } | |||
| 2941 | if (State.Flags & MachO::EXPORT_SYMBOL_FLAGS_REEXPORT) { | |||
| 2942 | State.Address = 0; | |||
| 2943 | State.Other = readULEB128(State.Current, &error); // dylib ordinal | |||
| 2944 | if (error) { | |||
| 2945 | *E = malformedError("dylib ordinal of re-export " + Twine(error) + | |||
| 2946 | " in export trie data at node: 0x" + | |||
| 2947 | Twine::utohexstr(offset)); | |||
| 2948 | moveToEnd(); | |||
| 2949 | return; | |||
| 2950 | } | |||
| 2951 | if (O != nullptr) { | |||
| 2952 | if (State.Other > O->getLibraryCount()) { | |||
| 2953 | *E = malformedError( | |||
| 2954 | "bad library ordinal: " + Twine((int)State.Other) + " (max " + | |||
| 2955 | Twine((int)O->getLibraryCount()) + | |||
| 2956 | ") in export trie data at node: 0x" + Twine::utohexstr(offset)); | |||
| 2957 | moveToEnd(); | |||
| 2958 | return; | |||
| 2959 | } | |||
| 2960 | } | |||
| 2961 | State.ImportName = reinterpret_cast<const char*>(State.Current); | |||
| 2962 | if (*State.ImportName == '\0') { | |||
| 2963 | State.Current++; | |||
| 2964 | } else { | |||
| 2965 | const uint8_t *End = State.Current + 1; | |||
| 2966 | if (End >= Trie.end()) { | |||
| 2967 | *E = malformedError("import name of re-export in export trie data at " | |||
| 2968 | "node: 0x" + | |||
| 2969 | Twine::utohexstr(offset) + | |||
| 2970 | " starts past end of trie data"); | |||
| 2971 | moveToEnd(); | |||
| 2972 | return; | |||
| 2973 | } | |||
| 2974 | while(*End != '\0' && End < Trie.end()) | |||
| 2975 | End++; | |||
| 2976 | if (*End != '\0') { | |||
| 2977 | *E = malformedError("import name of re-export in export trie data at " | |||
| 2978 | "node: 0x" + | |||
| 2979 | Twine::utohexstr(offset) + | |||
| 2980 | " extends past end of trie data"); | |||
| 2981 | moveToEnd(); | |||
| 2982 | return; | |||
| 2983 | } | |||
| 2984 | State.Current = End + 1; | |||
| 2985 | } | |||
| 2986 | } else { | |||
| 2987 | State.Address = readULEB128(State.Current, &error); | |||
| 2988 | if (error) { | |||
| 2989 | *E = malformedError("address " + Twine(error) + | |||
| 2990 | " in export trie data at node: 0x" + | |||
| 2991 | Twine::utohexstr(offset)); | |||
| 2992 | moveToEnd(); | |||
| 2993 | return; | |||
| 2994 | } | |||
| 2995 | if (State.Flags & MachO::EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER) { | |||
| 2996 | State.Other = readULEB128(State.Current, &error); | |||
| 2997 | if (error) { | |||
| 2998 | *E = malformedError("resolver of stub and resolver " + Twine(error) + | |||
| 2999 | " in export trie data at node: 0x" + | |||
| 3000 | Twine::utohexstr(offset)); | |||
| 3001 | moveToEnd(); | |||
| 3002 | return; | |||
| 3003 | } | |||
| 3004 | } | |||
| 3005 | } | |||
| 3006 | if(ExportStart + ExportInfoSize != State.Current) { | |||
| 3007 | *E = malformedError( | |||
| 3008 | "inconsistant export info size: 0x" + | |||
| 3009 | Twine::utohexstr(ExportInfoSize) + " where actual size was: 0x" + | |||
| 3010 | Twine::utohexstr(State.Current - ExportStart) + | |||
| 3011 | " in export trie data at node: 0x" + Twine::utohexstr(offset)); | |||
| 3012 | moveToEnd(); | |||
| 3013 | return; | |||
| 3014 | } | |||
| 3015 | } | |||
| 3016 | State.ChildCount = *Children; | |||
| 3017 | if (State.ChildCount != 0 && Children + 1 >= Trie.end()) { | |||
| 3018 | *E = malformedError("byte for count of childern in export trie data at " | |||
| 3019 | "node: 0x" + | |||
| 3020 | Twine::utohexstr(offset) + | |||
| 3021 | " extends past end of trie data"); | |||
| 3022 | moveToEnd(); | |||
| 3023 | return; | |||
| 3024 | } | |||
| 3025 | State.Current = Children + 1; | |||
| 3026 | State.NextChildIndex = 0; | |||
| 3027 | State.ParentStringLength = CumulativeString.size(); | |||
| 3028 | Stack.push_back(State); | |||
| 3029 | } | |||
| 3030 | ||||
| 3031 | void ExportEntry::pushDownUntilBottom() { | |||
| 3032 | ErrorAsOutParameter ErrAsOutParam(E); | |||
| 3033 | const char *error; | |||
| 3034 | while (Stack.back().NextChildIndex < Stack.back().ChildCount) { | |||
| 3035 | NodeState &Top = Stack.back(); | |||
| 3036 | CumulativeString.resize(Top.ParentStringLength); | |||
| 3037 | for (;*Top.Current != 0 && Top.Current < Trie.end(); Top.Current++) { | |||
| 3038 | char C = *Top.Current; | |||
| 3039 | CumulativeString.push_back(C); | |||
| 3040 | } | |||
| 3041 | if (Top.Current >= Trie.end()) { | |||
| 3042 | *E = malformedError("edge sub-string in export trie data at node: 0x" + | |||
| 3043 | Twine::utohexstr(Top.Start - Trie.begin()) + | |||
| 3044 | " for child #" + Twine((int)Top.NextChildIndex) + | |||
| 3045 | " extends past end of trie data"); | |||
| 3046 | moveToEnd(); | |||
| 3047 | return; | |||
| 3048 | } | |||
| 3049 | Top.Current += 1; | |||
| 3050 | uint64_t childNodeIndex = readULEB128(Top.Current, &error); | |||
| 3051 | if (error) { | |||
| 3052 | *E = malformedError("child node offset " + Twine(error) + | |||
| 3053 | " in export trie data at node: 0x" + | |||
| 3054 | Twine::utohexstr(Top.Start - Trie.begin())); | |||
| 3055 | moveToEnd(); | |||
| 3056 | return; | |||
| 3057 | } | |||
| 3058 | for (const NodeState &node : nodes()) { | |||
| 3059 | if (node.Start == Trie.begin() + childNodeIndex){ | |||
| 3060 | *E = malformedError("loop in childern in export trie data at node: 0x" + | |||
| 3061 | Twine::utohexstr(Top.Start - Trie.begin()) + | |||
| 3062 | " back to node: 0x" + | |||
| 3063 | Twine::utohexstr(childNodeIndex)); | |||
| 3064 | moveToEnd(); | |||
| 3065 | return; | |||
| 3066 | } | |||
| 3067 | } | |||
| 3068 | Top.NextChildIndex += 1; | |||
| 3069 | pushNode(childNodeIndex); | |||
| 3070 | if (*E) | |||
| 3071 | return; | |||
| 3072 | } | |||
| 3073 | if (!Stack.back().IsExportNode) { | |||
| 3074 | *E = malformedError("node is not an export node in export trie data at " | |||
| 3075 | "node: 0x" + | |||
| 3076 | Twine::utohexstr(Stack.back().Start - Trie.begin())); | |||
| 3077 | moveToEnd(); | |||
| 3078 | return; | |||
| 3079 | } | |||
| 3080 | } | |||
| 3081 | ||||
| 3082 | // We have a trie data structure and need a way to walk it that is compatible | |||
| 3083 | // with the C++ iterator model. The solution is a non-recursive depth first | |||
| 3084 | // traversal where the iterator contains a stack of parent nodes along with a | |||
| 3085 | // string that is the accumulation of all edge strings along the parent chain | |||
| 3086 | // to this point. | |||
| 3087 | // | |||
| 3088 | // There is one "export" node for each exported symbol. But because some | |||
| 3089 | // symbols may be a prefix of another symbol (e.g. _dup and _dup2), an export | |||
| 3090 | // node may have child nodes too. | |||
| 3091 | // | |||
| 3092 | // The algorithm for moveNext() is to keep moving down the leftmost unvisited | |||
| 3093 | // child until hitting a node with no children (which is an export node or | |||
| 3094 | // else the trie is malformed). On the way down, each node is pushed on the | |||
| 3095 | // stack ivar. If there is no more ways down, it pops up one and tries to go | |||
| 3096 | // down a sibling path until a childless node is reached. | |||
| 3097 | void ExportEntry::moveNext() { | |||
| 3098 | assert(!Stack.empty() && "ExportEntry::moveNext() with empty node stack")((void)0); | |||
| 3099 | if (!Stack.back().IsExportNode) { | |||
| 3100 | *E = malformedError("node is not an export node in export trie data at " | |||
| 3101 | "node: 0x" + | |||
| 3102 | Twine::utohexstr(Stack.back().Start - Trie.begin())); | |||
| 3103 | moveToEnd(); | |||
| 3104 | return; | |||
| 3105 | } | |||
| 3106 | ||||
| 3107 | Stack.pop_back(); | |||
| 3108 | while (!Stack.empty()) { | |||
| 3109 | NodeState &Top = Stack.back(); | |||
| 3110 | if (Top.NextChildIndex < Top.ChildCount) { | |||
| 3111 | pushDownUntilBottom(); | |||
| 3112 | // Now at the next export node. | |||
| 3113 | return; | |||
| 3114 | } else { | |||
| 3115 | if (Top.IsExportNode) { | |||
| 3116 | // This node has no children but is itself an export node. | |||
| 3117 | CumulativeString.resize(Top.ParentStringLength); | |||
| 3118 | return; | |||
| 3119 | } | |||
| 3120 | Stack.pop_back(); | |||
| 3121 | } | |||
| 3122 | } | |||
| 3123 | Done = true; | |||
| 3124 | } | |||
| 3125 | ||||
| 3126 | iterator_range<export_iterator> | |||
| 3127 | MachOObjectFile::exports(Error &E, ArrayRef<uint8_t> Trie, | |||
| 3128 | const MachOObjectFile *O) { | |||
| 3129 | ExportEntry Start(&E, O, Trie); | |||
| 3130 | if (Trie.empty()) | |||
| 3131 | Start.moveToEnd(); | |||
| 3132 | else | |||
| 3133 | Start.moveToFirst(); | |||
| 3134 | ||||
| 3135 | ExportEntry Finish(&E, O, Trie); | |||
| 3136 | Finish.moveToEnd(); | |||
| 3137 | ||||
| 3138 | return make_range(export_iterator(Start), export_iterator(Finish)); | |||
| 3139 | } | |||
| 3140 | ||||
| 3141 | iterator_range<export_iterator> MachOObjectFile::exports(Error &Err) const { | |||
| 3142 | return exports(Err, getDyldInfoExportsTrie(), this); | |||
| 3143 | } | |||
| 3144 | ||||
| 3145 | MachORebaseEntry::MachORebaseEntry(Error *E, const MachOObjectFile *O, | |||
| 3146 | ArrayRef<uint8_t> Bytes, bool is64Bit) | |||
| 3147 | : E(E), O(O), Opcodes(Bytes), Ptr(Bytes.begin()), | |||
| 3148 | PointerSize(is64Bit ? 8 : 4) {} | |||
| 3149 | ||||
| 3150 | void MachORebaseEntry::moveToFirst() { | |||
| 3151 | Ptr = Opcodes.begin(); | |||
| 3152 | moveNext(); | |||
| 3153 | } | |||
| 3154 | ||||
| 3155 | void MachORebaseEntry::moveToEnd() { | |||
| 3156 | Ptr = Opcodes.end(); | |||
| 3157 | RemainingLoopCount = 0; | |||
| 3158 | Done = true; | |||
| 3159 | } | |||
| 3160 | ||||
| 3161 | void MachORebaseEntry::moveNext() { | |||
| 3162 | ErrorAsOutParameter ErrAsOutParam(E); | |||
| 3163 | // If in the middle of some loop, move to next rebasing in loop. | |||
| 3164 | SegmentOffset += AdvanceAmount; | |||
| 3165 | if (RemainingLoopCount) { | |||
| 3166 | --RemainingLoopCount; | |||
| 3167 | return; | |||
| 3168 | } | |||
| 3169 | // REBASE_OPCODE_DONE is only used for padding if we are not aligned to | |||
| 3170 | // pointer size. Therefore it is possible to reach the end without ever having | |||
| 3171 | // seen REBASE_OPCODE_DONE. | |||
| 3172 | if (Ptr == Opcodes.end()) { | |||
| 3173 | Done = true; | |||
| 3174 | return; | |||
| 3175 | } | |||
| 3176 | bool More = true; | |||
| 3177 | while (More) { | |||
| 3178 | // Parse next opcode and set up next loop. | |||
| 3179 | const uint8_t *OpcodeStart = Ptr; | |||
| 3180 | uint8_t Byte = *Ptr++; | |||
| 3181 | uint8_t ImmValue = Byte & MachO::REBASE_IMMEDIATE_MASK; | |||
| 3182 | uint8_t Opcode = Byte & MachO::REBASE_OPCODE_MASK; | |||
| 3183 | uint32_t Count, Skip; | |||
| 3184 | const char *error = nullptr; | |||
| 3185 | switch (Opcode) { | |||
| 3186 | case MachO::REBASE_OPCODE_DONE: | |||
| 3187 | More = false; | |||
| 3188 | Done = true; | |||
| 3189 | moveToEnd(); | |||
| 3190 | DEBUG_WITH_TYPE("mach-o-rebase", dbgs() << "REBASE_OPCODE_DONE\n")do { } while (false); | |||
| 3191 | break; | |||
| 3192 | case MachO::REBASE_OPCODE_SET_TYPE_IMM: | |||
| 3193 | RebaseType = ImmValue; | |||
| 3194 | if (RebaseType > MachO::REBASE_TYPE_TEXT_PCREL32) { | |||
| 3195 | *E = malformedError("for REBASE_OPCODE_SET_TYPE_IMM bad bind type: " + | |||
| 3196 | Twine((int)RebaseType) + " for opcode at: 0x" + | |||
| 3197 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3198 | moveToEnd(); | |||
| 3199 | return; | |||
| 3200 | } | |||
| 3201 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3202 | "mach-o-rebase",do { } while (false) | |||
| 3203 | dbgs() << "REBASE_OPCODE_SET_TYPE_IMM: "do { } while (false) | |||
| 3204 | << "RebaseType=" << (int) RebaseType << "\n")do { } while (false); | |||
| 3205 | break; | |||
| 3206 | case MachO::REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB: | |||
| 3207 | SegmentIndex = ImmValue; | |||
| 3208 | SegmentOffset = readULEB128(&error); | |||
| 3209 | if (error) { | |||
| 3210 | *E = malformedError("for REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB " + | |||
| 3211 | Twine(error) + " for opcode at: 0x" + | |||
| 3212 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3213 | moveToEnd(); | |||
| 3214 | return; | |||
| 3215 | } | |||
| 3216 | error = O->RebaseEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3217 | PointerSize); | |||
| 3218 | if (error) { | |||
| 3219 | *E = malformedError("for REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB " + | |||
| 3220 | Twine(error) + " for opcode at: 0x" + | |||
| 3221 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3222 | moveToEnd(); | |||
| 3223 | return; | |||
| 3224 | } | |||
| 3225 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3226 | "mach-o-rebase",do { } while (false) | |||
| 3227 | dbgs() << "REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB: "do { } while (false) | |||
| 3228 | << "SegmentIndex=" << SegmentIndex << ", "do { } while (false) | |||
| 3229 | << format("SegmentOffset=0x%06X", SegmentOffset)do { } while (false) | |||
| 3230 | << "\n")do { } while (false); | |||
| 3231 | break; | |||
| 3232 | case MachO::REBASE_OPCODE_ADD_ADDR_ULEB: | |||
| 3233 | SegmentOffset += readULEB128(&error); | |||
| 3234 | if (error) { | |||
| 3235 | *E = malformedError("for REBASE_OPCODE_ADD_ADDR_ULEB " + Twine(error) + | |||
| 3236 | " for opcode at: 0x" + | |||
| 3237 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3238 | moveToEnd(); | |||
| 3239 | return; | |||
| 3240 | } | |||
| 3241 | error = O->RebaseEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3242 | PointerSize); | |||
| 3243 | if (error) { | |||
| 3244 | *E = malformedError("for REBASE_OPCODE_ADD_ADDR_ULEB " + Twine(error) + | |||
| 3245 | " for opcode at: 0x" + | |||
| 3246 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3247 | moveToEnd(); | |||
| 3248 | return; | |||
| 3249 | } | |||
| 3250 | DEBUG_WITH_TYPE("mach-o-rebase",do { } while (false) | |||
| 3251 | dbgs() << "REBASE_OPCODE_ADD_ADDR_ULEB: "do { } while (false) | |||
| 3252 | << format("SegmentOffset=0x%06X",do { } while (false) | |||
| 3253 | SegmentOffset) << "\n")do { } while (false); | |||
| 3254 | break; | |||
| 3255 | case MachO::REBASE_OPCODE_ADD_ADDR_IMM_SCALED: | |||
| 3256 | SegmentOffset += ImmValue * PointerSize; | |||
| 3257 | error = O->RebaseEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3258 | PointerSize); | |||
| 3259 | if (error) { | |||
| 3260 | *E = malformedError("for REBASE_OPCODE_ADD_ADDR_IMM_SCALED " + | |||
| 3261 | Twine(error) + " for opcode at: 0x" + | |||
| 3262 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3263 | moveToEnd(); | |||
| 3264 | return; | |||
| 3265 | } | |||
| 3266 | DEBUG_WITH_TYPE("mach-o-rebase",do { } while (false) | |||
| 3267 | dbgs() << "REBASE_OPCODE_ADD_ADDR_IMM_SCALED: "do { } while (false) | |||
| 3268 | << format("SegmentOffset=0x%06X",do { } while (false) | |||
| 3269 | SegmentOffset) << "\n")do { } while (false); | |||
| 3270 | break; | |||
| 3271 | case MachO::REBASE_OPCODE_DO_REBASE_IMM_TIMES: | |||
| 3272 | AdvanceAmount = PointerSize; | |||
| 3273 | Skip = 0; | |||
| 3274 | Count = ImmValue; | |||
| 3275 | if (ImmValue != 0) | |||
| 3276 | RemainingLoopCount = ImmValue - 1; | |||
| 3277 | else | |||
| 3278 | RemainingLoopCount = 0; | |||
| 3279 | error = O->RebaseEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3280 | PointerSize, Count, Skip); | |||
| 3281 | if (error) { | |||
| 3282 | *E = malformedError("for REBASE_OPCODE_DO_REBASE_IMM_TIMES " + | |||
| 3283 | Twine(error) + " for opcode at: 0x" + | |||
| 3284 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3285 | moveToEnd(); | |||
| 3286 | return; | |||
| 3287 | } | |||
| 3288 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3289 | "mach-o-rebase",do { } while (false) | |||
| 3290 | dbgs() << "REBASE_OPCODE_DO_REBASE_IMM_TIMES: "do { } while (false) | |||
| 3291 | << format("SegmentOffset=0x%06X", SegmentOffset)do { } while (false) | |||
| 3292 | << ", AdvanceAmount=" << AdvanceAmountdo { } while (false) | |||
| 3293 | << ", RemainingLoopCount=" << RemainingLoopCountdo { } while (false) | |||
| 3294 | << "\n")do { } while (false); | |||
| 3295 | return; | |||
| 3296 | case MachO::REBASE_OPCODE_DO_REBASE_ULEB_TIMES: | |||
| 3297 | AdvanceAmount = PointerSize; | |||
| 3298 | Skip = 0; | |||
| 3299 | Count = readULEB128(&error); | |||
| 3300 | if (error) { | |||
| 3301 | *E = malformedError("for REBASE_OPCODE_DO_REBASE_ULEB_TIMES " + | |||
| 3302 | Twine(error) + " for opcode at: 0x" + | |||
| 3303 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3304 | moveToEnd(); | |||
| 3305 | return; | |||
| 3306 | } | |||
| 3307 | if (Count != 0) | |||
| 3308 | RemainingLoopCount = Count - 1; | |||
| 3309 | else | |||
| 3310 | RemainingLoopCount = 0; | |||
| 3311 | error = O->RebaseEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3312 | PointerSize, Count, Skip); | |||
| 3313 | if (error) { | |||
| 3314 | *E = malformedError("for REBASE_OPCODE_DO_REBASE_ULEB_TIMES " + | |||
| 3315 | Twine(error) + " for opcode at: 0x" + | |||
| 3316 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3317 | moveToEnd(); | |||
| 3318 | return; | |||
| 3319 | } | |||
| 3320 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3321 | "mach-o-rebase",do { } while (false) | |||
| 3322 | dbgs() << "REBASE_OPCODE_DO_REBASE_ULEB_TIMES: "do { } while (false) | |||
| 3323 | << format("SegmentOffset=0x%06X", SegmentOffset)do { } while (false) | |||
| 3324 | << ", AdvanceAmount=" << AdvanceAmountdo { } while (false) | |||
| 3325 | << ", RemainingLoopCount=" << RemainingLoopCountdo { } while (false) | |||
| 3326 | << "\n")do { } while (false); | |||
| 3327 | return; | |||
| 3328 | case MachO::REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB: | |||
| 3329 | Skip = readULEB128(&error); | |||
| 3330 | if (error) { | |||
| 3331 | *E = malformedError("for REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB " + | |||
| 3332 | Twine(error) + " for opcode at: 0x" + | |||
| 3333 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3334 | moveToEnd(); | |||
| 3335 | return; | |||
| 3336 | } | |||
| 3337 | AdvanceAmount = Skip + PointerSize; | |||
| 3338 | Count = 1; | |||
| 3339 | RemainingLoopCount = 0; | |||
| 3340 | error = O->RebaseEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3341 | PointerSize, Count, Skip); | |||
| 3342 | if (error) { | |||
| 3343 | *E = malformedError("for REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB " + | |||
| 3344 | Twine(error) + " for opcode at: 0x" + | |||
| 3345 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3346 | moveToEnd(); | |||
| 3347 | return; | |||
| 3348 | } | |||
| 3349 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3350 | "mach-o-rebase",do { } while (false) | |||
| 3351 | dbgs() << "REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB: "do { } while (false) | |||
| 3352 | << format("SegmentOffset=0x%06X", SegmentOffset)do { } while (false) | |||
| 3353 | << ", AdvanceAmount=" << AdvanceAmountdo { } while (false) | |||
| 3354 | << ", RemainingLoopCount=" << RemainingLoopCountdo { } while (false) | |||
| 3355 | << "\n")do { } while (false); | |||
| 3356 | return; | |||
| 3357 | case MachO::REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB: | |||
| 3358 | Count = readULEB128(&error); | |||
| 3359 | if (error) { | |||
| 3360 | *E = malformedError("for REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_" | |||
| 3361 | "ULEB " + | |||
| 3362 | Twine(error) + " for opcode at: 0x" + | |||
| 3363 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3364 | moveToEnd(); | |||
| 3365 | return; | |||
| 3366 | } | |||
| 3367 | if (Count != 0) | |||
| 3368 | RemainingLoopCount = Count - 1; | |||
| 3369 | else | |||
| 3370 | RemainingLoopCount = 0; | |||
| 3371 | Skip = readULEB128(&error); | |||
| 3372 | if (error) { | |||
| 3373 | *E = malformedError("for REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_" | |||
| 3374 | "ULEB " + | |||
| 3375 | Twine(error) + " for opcode at: 0x" + | |||
| 3376 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3377 | moveToEnd(); | |||
| 3378 | return; | |||
| 3379 | } | |||
| 3380 | AdvanceAmount = Skip + PointerSize; | |||
| 3381 | ||||
| 3382 | error = O->RebaseEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3383 | PointerSize, Count, Skip); | |||
| 3384 | if (error) { | |||
| 3385 | *E = malformedError("for REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_" | |||
| 3386 | "ULEB " + | |||
| 3387 | Twine(error) + " for opcode at: 0x" + | |||
| 3388 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3389 | moveToEnd(); | |||
| 3390 | return; | |||
| 3391 | } | |||
| 3392 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3393 | "mach-o-rebase",do { } while (false) | |||
| 3394 | dbgs() << "REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB: "do { } while (false) | |||
| 3395 | << format("SegmentOffset=0x%06X", SegmentOffset)do { } while (false) | |||
| 3396 | << ", AdvanceAmount=" << AdvanceAmountdo { } while (false) | |||
| 3397 | << ", RemainingLoopCount=" << RemainingLoopCountdo { } while (false) | |||
| 3398 | << "\n")do { } while (false); | |||
| 3399 | return; | |||
| 3400 | default: | |||
| 3401 | *E = malformedError("bad rebase info (bad opcode value 0x" + | |||
| 3402 | Twine::utohexstr(Opcode) + " for opcode at: 0x" + | |||
| 3403 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3404 | moveToEnd(); | |||
| 3405 | return; | |||
| 3406 | } | |||
| 3407 | } | |||
| 3408 | } | |||
| 3409 | ||||
| 3410 | uint64_t MachORebaseEntry::readULEB128(const char **error) { | |||
| 3411 | unsigned Count; | |||
| 3412 | uint64_t Result = decodeULEB128(Ptr, &Count, Opcodes.end(), error); | |||
| 3413 | Ptr += Count; | |||
| 3414 | if (Ptr > Opcodes.end()) | |||
| 3415 | Ptr = Opcodes.end(); | |||
| 3416 | return Result; | |||
| 3417 | } | |||
| 3418 | ||||
| 3419 | int32_t MachORebaseEntry::segmentIndex() const { return SegmentIndex; } | |||
| 3420 | ||||
| 3421 | uint64_t MachORebaseEntry::segmentOffset() const { return SegmentOffset; } | |||
| 3422 | ||||
| 3423 | StringRef MachORebaseEntry::typeName() const { | |||
| 3424 | switch (RebaseType) { | |||
| 3425 | case MachO::REBASE_TYPE_POINTER: | |||
| 3426 | return "pointer"; | |||
| 3427 | case MachO::REBASE_TYPE_TEXT_ABSOLUTE32: | |||
| 3428 | return "text abs32"; | |||
| 3429 | case MachO::REBASE_TYPE_TEXT_PCREL32: | |||
| 3430 | return "text rel32"; | |||
| 3431 | } | |||
| 3432 | return "unknown"; | |||
| 3433 | } | |||
| 3434 | ||||
| 3435 | // For use with the SegIndex of a checked Mach-O Rebase entry | |||
| 3436 | // to get the segment name. | |||
| 3437 | StringRef MachORebaseEntry::segmentName() const { | |||
| 3438 | return O->BindRebaseSegmentName(SegmentIndex); | |||
| 3439 | } | |||
| 3440 | ||||
| 3441 | // For use with a SegIndex,SegOffset pair from a checked Mach-O Rebase entry | |||
| 3442 | // to get the section name. | |||
| 3443 | StringRef MachORebaseEntry::sectionName() const { | |||
| 3444 | return O->BindRebaseSectionName(SegmentIndex, SegmentOffset); | |||
| 3445 | } | |||
| 3446 | ||||
| 3447 | // For use with a SegIndex,SegOffset pair from a checked Mach-O Rebase entry | |||
| 3448 | // to get the address. | |||
| 3449 | uint64_t MachORebaseEntry::address() const { | |||
| 3450 | return O->BindRebaseAddress(SegmentIndex, SegmentOffset); | |||
| 3451 | } | |||
| 3452 | ||||
| 3453 | bool MachORebaseEntry::operator==(const MachORebaseEntry &Other) const { | |||
| 3454 | #ifdef EXPENSIVE_CHECKS | |||
| 3455 | assert(Opcodes == Other.Opcodes && "compare iterators of different files")((void)0); | |||
| 3456 | #else | |||
| 3457 | assert(Opcodes.data() == Other.Opcodes.data() && "compare iterators of different files")((void)0); | |||
| 3458 | #endif | |||
| 3459 | return (Ptr == Other.Ptr) && | |||
| 3460 | (RemainingLoopCount == Other.RemainingLoopCount) && | |||
| 3461 | (Done == Other.Done); | |||
| 3462 | } | |||
| 3463 | ||||
| 3464 | iterator_range<rebase_iterator> | |||
| 3465 | MachOObjectFile::rebaseTable(Error &Err, MachOObjectFile *O, | |||
| 3466 | ArrayRef<uint8_t> Opcodes, bool is64) { | |||
| 3467 | if (O->BindRebaseSectionTable == nullptr) | |||
| 3468 | O->BindRebaseSectionTable = std::make_unique<BindRebaseSegInfo>(O); | |||
| 3469 | MachORebaseEntry Start(&Err, O, Opcodes, is64); | |||
| 3470 | Start.moveToFirst(); | |||
| 3471 | ||||
| 3472 | MachORebaseEntry Finish(&Err, O, Opcodes, is64); | |||
| 3473 | Finish.moveToEnd(); | |||
| 3474 | ||||
| 3475 | return make_range(rebase_iterator(Start), rebase_iterator(Finish)); | |||
| 3476 | } | |||
| 3477 | ||||
| 3478 | iterator_range<rebase_iterator> MachOObjectFile::rebaseTable(Error &Err) { | |||
| 3479 | return rebaseTable(Err, this, getDyldInfoRebaseOpcodes(), is64Bit()); | |||
| 3480 | } | |||
| 3481 | ||||
| 3482 | MachOBindEntry::MachOBindEntry(Error *E, const MachOObjectFile *O, | |||
| 3483 | ArrayRef<uint8_t> Bytes, bool is64Bit, Kind BK) | |||
| 3484 | : E(E), O(O), Opcodes(Bytes), Ptr(Bytes.begin()), | |||
| 3485 | PointerSize(is64Bit ? 8 : 4), TableKind(BK) {} | |||
| 3486 | ||||
| 3487 | void MachOBindEntry::moveToFirst() { | |||
| 3488 | Ptr = Opcodes.begin(); | |||
| 3489 | moveNext(); | |||
| 3490 | } | |||
| 3491 | ||||
| 3492 | void MachOBindEntry::moveToEnd() { | |||
| 3493 | Ptr = Opcodes.end(); | |||
| 3494 | RemainingLoopCount = 0; | |||
| 3495 | Done = true; | |||
| 3496 | } | |||
| 3497 | ||||
| 3498 | void MachOBindEntry::moveNext() { | |||
| 3499 | ErrorAsOutParameter ErrAsOutParam(E); | |||
| 3500 | // If in the middle of some loop, move to next binding in loop. | |||
| 3501 | SegmentOffset += AdvanceAmount; | |||
| 3502 | if (RemainingLoopCount) { | |||
| 3503 | --RemainingLoopCount; | |||
| 3504 | return; | |||
| 3505 | } | |||
| 3506 | // BIND_OPCODE_DONE is only used for padding if we are not aligned to | |||
| 3507 | // pointer size. Therefore it is possible to reach the end without ever having | |||
| 3508 | // seen BIND_OPCODE_DONE. | |||
| 3509 | if (Ptr == Opcodes.end()) { | |||
| 3510 | Done = true; | |||
| 3511 | return; | |||
| 3512 | } | |||
| 3513 | bool More = true; | |||
| 3514 | while (More) { | |||
| 3515 | // Parse next opcode and set up next loop. | |||
| 3516 | const uint8_t *OpcodeStart = Ptr; | |||
| 3517 | uint8_t Byte = *Ptr++; | |||
| 3518 | uint8_t ImmValue = Byte & MachO::BIND_IMMEDIATE_MASK; | |||
| 3519 | uint8_t Opcode = Byte & MachO::BIND_OPCODE_MASK; | |||
| 3520 | int8_t SignExtended; | |||
| 3521 | const uint8_t *SymStart; | |||
| 3522 | uint32_t Count, Skip; | |||
| 3523 | const char *error = nullptr; | |||
| 3524 | switch (Opcode) { | |||
| 3525 | case MachO::BIND_OPCODE_DONE: | |||
| 3526 | if (TableKind == Kind::Lazy) { | |||
| 3527 | // Lazying bindings have a DONE opcode between entries. Need to ignore | |||
| 3528 | // it to advance to next entry. But need not if this is last entry. | |||
| 3529 | bool NotLastEntry = false; | |||
| 3530 | for (const uint8_t *P = Ptr; P < Opcodes.end(); ++P) { | |||
| 3531 | if (*P) { | |||
| 3532 | NotLastEntry = true; | |||
| 3533 | } | |||
| 3534 | } | |||
| 3535 | if (NotLastEntry) | |||
| 3536 | break; | |||
| 3537 | } | |||
| 3538 | More = false; | |||
| 3539 | moveToEnd(); | |||
| 3540 | DEBUG_WITH_TYPE("mach-o-bind", dbgs() << "BIND_OPCODE_DONE\n")do { } while (false); | |||
| 3541 | break; | |||
| 3542 | case MachO::BIND_OPCODE_SET_DYLIB_ORDINAL_IMM: | |||
| 3543 | if (TableKind == Kind::Weak) { | |||
| 3544 | *E = malformedError("BIND_OPCODE_SET_DYLIB_ORDINAL_IMM not allowed in " | |||
| 3545 | "weak bind table for opcode at: 0x" + | |||
| 3546 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3547 | moveToEnd(); | |||
| 3548 | return; | |||
| 3549 | } | |||
| 3550 | Ordinal = ImmValue; | |||
| 3551 | LibraryOrdinalSet = true; | |||
| 3552 | if (ImmValue > O->getLibraryCount()) { | |||
| 3553 | *E = malformedError("for BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB bad " | |||
| 3554 | "library ordinal: " + | |||
| 3555 | Twine((int)ImmValue) + " (max " + | |||
| 3556 | Twine((int)O->getLibraryCount()) + | |||
| 3557 | ") for opcode at: 0x" + | |||
| 3558 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3559 | moveToEnd(); | |||
| 3560 | return; | |||
| 3561 | } | |||
| 3562 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3563 | "mach-o-bind",do { } while (false) | |||
| 3564 | dbgs() << "BIND_OPCODE_SET_DYLIB_ORDINAL_IMM: "do { } while (false) | |||
| 3565 | << "Ordinal=" << Ordinal << "\n")do { } while (false); | |||
| 3566 | break; | |||
| 3567 | case MachO::BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB: | |||
| 3568 | if (TableKind == Kind::Weak) { | |||
| 3569 | *E = malformedError("BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB not allowed in " | |||
| 3570 | "weak bind table for opcode at: 0x" + | |||
| 3571 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3572 | moveToEnd(); | |||
| 3573 | return; | |||
| 3574 | } | |||
| 3575 | Ordinal = readULEB128(&error); | |||
| 3576 | LibraryOrdinalSet = true; | |||
| 3577 | if (error) { | |||
| 3578 | *E = malformedError("for BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB " + | |||
| 3579 | Twine(error) + " for opcode at: 0x" + | |||
| 3580 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3581 | moveToEnd(); | |||
| 3582 | return; | |||
| 3583 | } | |||
| 3584 | if (Ordinal > (int)O->getLibraryCount()) { | |||
| 3585 | *E = malformedError("for BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB bad " | |||
| 3586 | "library ordinal: " + | |||
| 3587 | Twine((int)Ordinal) + " (max " + | |||
| 3588 | Twine((int)O->getLibraryCount()) + | |||
| 3589 | ") for opcode at: 0x" + | |||
| 3590 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3591 | moveToEnd(); | |||
| 3592 | return; | |||
| 3593 | } | |||
| 3594 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3595 | "mach-o-bind",do { } while (false) | |||
| 3596 | dbgs() << "BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB: "do { } while (false) | |||
| 3597 | << "Ordinal=" << Ordinal << "\n")do { } while (false); | |||
| 3598 | break; | |||
| 3599 | case MachO::BIND_OPCODE_SET_DYLIB_SPECIAL_IMM: | |||
| 3600 | if (TableKind == Kind::Weak) { | |||
| 3601 | *E = malformedError("BIND_OPCODE_SET_DYLIB_SPECIAL_IMM not allowed in " | |||
| 3602 | "weak bind table for opcode at: 0x" + | |||
| 3603 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3604 | moveToEnd(); | |||
| 3605 | return; | |||
| 3606 | } | |||
| 3607 | if (ImmValue) { | |||
| 3608 | SignExtended = MachO::BIND_OPCODE_MASK | ImmValue; | |||
| 3609 | Ordinal = SignExtended; | |||
| 3610 | if (Ordinal < MachO::BIND_SPECIAL_DYLIB_FLAT_LOOKUP) { | |||
| 3611 | *E = malformedError("for BIND_OPCODE_SET_DYLIB_SPECIAL_IMM unknown " | |||
| 3612 | "special ordinal: " + | |||
| 3613 | Twine((int)Ordinal) + " for opcode at: 0x" + | |||
| 3614 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3615 | moveToEnd(); | |||
| 3616 | return; | |||
| 3617 | } | |||
| 3618 | } else | |||
| 3619 | Ordinal = 0; | |||
| 3620 | LibraryOrdinalSet = true; | |||
| 3621 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3622 | "mach-o-bind",do { } while (false) | |||
| 3623 | dbgs() << "BIND_OPCODE_SET_DYLIB_SPECIAL_IMM: "do { } while (false) | |||
| 3624 | << "Ordinal=" << Ordinal << "\n")do { } while (false); | |||
| 3625 | break; | |||
| 3626 | case MachO::BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM: | |||
| 3627 | Flags = ImmValue; | |||
| 3628 | SymStart = Ptr; | |||
| 3629 | while (*Ptr && (Ptr < Opcodes.end())) { | |||
| 3630 | ++Ptr; | |||
| 3631 | } | |||
| 3632 | if (Ptr == Opcodes.end()) { | |||
| 3633 | *E = malformedError( | |||
| 3634 | "for BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM " | |||
| 3635 | "symbol name extends past opcodes for opcode at: 0x" + | |||
| 3636 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3637 | moveToEnd(); | |||
| 3638 | return; | |||
| 3639 | } | |||
| 3640 | SymbolName = StringRef(reinterpret_cast<const char*>(SymStart), | |||
| 3641 | Ptr-SymStart); | |||
| 3642 | ++Ptr; | |||
| 3643 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3644 | "mach-o-bind",do { } while (false) | |||
| 3645 | dbgs() << "BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM: "do { } while (false) | |||
| 3646 | << "SymbolName=" << SymbolName << "\n")do { } while (false); | |||
| 3647 | if (TableKind == Kind::Weak) { | |||
| 3648 | if (ImmValue & MachO::BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION) | |||
| 3649 | return; | |||
| 3650 | } | |||
| 3651 | break; | |||
| 3652 | case MachO::BIND_OPCODE_SET_TYPE_IMM: | |||
| 3653 | BindType = ImmValue; | |||
| 3654 | if (ImmValue > MachO::BIND_TYPE_TEXT_PCREL32) { | |||
| 3655 | *E = malformedError("for BIND_OPCODE_SET_TYPE_IMM bad bind type: " + | |||
| 3656 | Twine((int)ImmValue) + " for opcode at: 0x" + | |||
| 3657 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3658 | moveToEnd(); | |||
| 3659 | return; | |||
| 3660 | } | |||
| 3661 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3662 | "mach-o-bind",do { } while (false) | |||
| 3663 | dbgs() << "BIND_OPCODE_SET_TYPE_IMM: "do { } while (false) | |||
| 3664 | << "BindType=" << (int)BindType << "\n")do { } while (false); | |||
| 3665 | break; | |||
| 3666 | case MachO::BIND_OPCODE_SET_ADDEND_SLEB: | |||
| 3667 | Addend = readSLEB128(&error); | |||
| 3668 | if (error) { | |||
| 3669 | *E = malformedError("for BIND_OPCODE_SET_ADDEND_SLEB " + Twine(error) + | |||
| 3670 | " for opcode at: 0x" + | |||
| 3671 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3672 | moveToEnd(); | |||
| 3673 | return; | |||
| 3674 | } | |||
| 3675 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3676 | "mach-o-bind",do { } while (false) | |||
| 3677 | dbgs() << "BIND_OPCODE_SET_ADDEND_SLEB: "do { } while (false) | |||
| 3678 | << "Addend=" << Addend << "\n")do { } while (false); | |||
| 3679 | break; | |||
| 3680 | case MachO::BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB: | |||
| 3681 | SegmentIndex = ImmValue; | |||
| 3682 | SegmentOffset = readULEB128(&error); | |||
| 3683 | if (error) { | |||
| 3684 | *E = malformedError("for BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB " + | |||
| 3685 | Twine(error) + " for opcode at: 0x" + | |||
| 3686 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3687 | moveToEnd(); | |||
| 3688 | return; | |||
| 3689 | } | |||
| 3690 | error = O->BindEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3691 | PointerSize); | |||
| 3692 | if (error) { | |||
| 3693 | *E = malformedError("for BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB " + | |||
| 3694 | Twine(error) + " for opcode at: 0x" + | |||
| 3695 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3696 | moveToEnd(); | |||
| 3697 | return; | |||
| 3698 | } | |||
| 3699 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3700 | "mach-o-bind",do { } while (false) | |||
| 3701 | dbgs() << "BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB: "do { } while (false) | |||
| 3702 | << "SegmentIndex=" << SegmentIndex << ", "do { } while (false) | |||
| 3703 | << format("SegmentOffset=0x%06X", SegmentOffset)do { } while (false) | |||
| 3704 | << "\n")do { } while (false); | |||
| 3705 | break; | |||
| 3706 | case MachO::BIND_OPCODE_ADD_ADDR_ULEB: | |||
| 3707 | SegmentOffset += readULEB128(&error); | |||
| 3708 | if (error) { | |||
| 3709 | *E = malformedError("for BIND_OPCODE_ADD_ADDR_ULEB " + Twine(error) + | |||
| 3710 | " for opcode at: 0x" + | |||
| 3711 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3712 | moveToEnd(); | |||
| 3713 | return; | |||
| 3714 | } | |||
| 3715 | error = O->BindEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3716 | PointerSize); | |||
| 3717 | if (error) { | |||
| 3718 | *E = malformedError("for BIND_OPCODE_ADD_ADDR_ULEB " + Twine(error) + | |||
| 3719 | " for opcode at: 0x" + | |||
| 3720 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3721 | moveToEnd(); | |||
| 3722 | return; | |||
| 3723 | } | |||
| 3724 | DEBUG_WITH_TYPE("mach-o-bind",do { } while (false) | |||
| 3725 | dbgs() << "BIND_OPCODE_ADD_ADDR_ULEB: "do { } while (false) | |||
| 3726 | << format("SegmentOffset=0x%06X",do { } while (false) | |||
| 3727 | SegmentOffset) << "\n")do { } while (false); | |||
| 3728 | break; | |||
| 3729 | case MachO::BIND_OPCODE_DO_BIND: | |||
| 3730 | AdvanceAmount = PointerSize; | |||
| 3731 | RemainingLoopCount = 0; | |||
| 3732 | error = O->BindEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3733 | PointerSize); | |||
| 3734 | if (error) { | |||
| 3735 | *E = malformedError("for BIND_OPCODE_DO_BIND " + Twine(error) + | |||
| 3736 | " for opcode at: 0x" + | |||
| 3737 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3738 | moveToEnd(); | |||
| 3739 | return; | |||
| 3740 | } | |||
| 3741 | if (SymbolName == StringRef()) { | |||
| 3742 | *E = malformedError( | |||
| 3743 | "for BIND_OPCODE_DO_BIND missing preceding " | |||
| 3744 | "BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM for opcode at: 0x" + | |||
| 3745 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3746 | moveToEnd(); | |||
| 3747 | return; | |||
| 3748 | } | |||
| 3749 | if (!LibraryOrdinalSet && TableKind != Kind::Weak) { | |||
| 3750 | *E = | |||
| 3751 | malformedError("for BIND_OPCODE_DO_BIND missing preceding " | |||
| 3752 | "BIND_OPCODE_SET_DYLIB_ORDINAL_* for opcode at: 0x" + | |||
| 3753 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3754 | moveToEnd(); | |||
| 3755 | return; | |||
| 3756 | } | |||
| 3757 | DEBUG_WITH_TYPE("mach-o-bind",do { } while (false) | |||
| 3758 | dbgs() << "BIND_OPCODE_DO_BIND: "do { } while (false) | |||
| 3759 | << format("SegmentOffset=0x%06X",do { } while (false) | |||
| 3760 | SegmentOffset) << "\n")do { } while (false); | |||
| 3761 | return; | |||
| 3762 | case MachO::BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB: | |||
| 3763 | if (TableKind == Kind::Lazy) { | |||
| 3764 | *E = malformedError("BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB not allowed in " | |||
| 3765 | "lazy bind table for opcode at: 0x" + | |||
| 3766 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3767 | moveToEnd(); | |||
| 3768 | return; | |||
| 3769 | } | |||
| 3770 | error = O->BindEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3771 | PointerSize); | |||
| 3772 | if (error) { | |||
| 3773 | *E = malformedError("for BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB " + | |||
| 3774 | Twine(error) + " for opcode at: 0x" + | |||
| 3775 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3776 | moveToEnd(); | |||
| 3777 | return; | |||
| 3778 | } | |||
| 3779 | if (SymbolName == StringRef()) { | |||
| 3780 | *E = malformedError( | |||
| 3781 | "for BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB missing " | |||
| 3782 | "preceding BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM for opcode " | |||
| 3783 | "at: 0x" + | |||
| 3784 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3785 | moveToEnd(); | |||
| 3786 | return; | |||
| 3787 | } | |||
| 3788 | if (!LibraryOrdinalSet && TableKind != Kind::Weak) { | |||
| 3789 | *E = malformedError( | |||
| 3790 | "for BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB missing " | |||
| 3791 | "preceding BIND_OPCODE_SET_DYLIB_ORDINAL_* for opcode at: 0x" + | |||
| 3792 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3793 | moveToEnd(); | |||
| 3794 | return; | |||
| 3795 | } | |||
| 3796 | AdvanceAmount = readULEB128(&error) + PointerSize; | |||
| 3797 | if (error) { | |||
| 3798 | *E = malformedError("for BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB " + | |||
| 3799 | Twine(error) + " for opcode at: 0x" + | |||
| 3800 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3801 | moveToEnd(); | |||
| 3802 | return; | |||
| 3803 | } | |||
| 3804 | // Note, this is not really an error until the next bind but make no sense | |||
| 3805 | // for a BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB to not be followed by another | |||
| 3806 | // bind operation. | |||
| 3807 | error = O->BindEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset + | |||
| 3808 | AdvanceAmount, PointerSize); | |||
| 3809 | if (error) { | |||
| 3810 | *E = malformedError("for BIND_OPCODE_ADD_ADDR_ULEB (after adding " | |||
| 3811 | "ULEB) " + | |||
| 3812 | Twine(error) + " for opcode at: 0x" + | |||
| 3813 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3814 | moveToEnd(); | |||
| 3815 | return; | |||
| 3816 | } | |||
| 3817 | RemainingLoopCount = 0; | |||
| 3818 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3819 | "mach-o-bind",do { } while (false) | |||
| 3820 | dbgs() << "BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB: "do { } while (false) | |||
| 3821 | << format("SegmentOffset=0x%06X", SegmentOffset)do { } while (false) | |||
| 3822 | << ", AdvanceAmount=" << AdvanceAmountdo { } while (false) | |||
| 3823 | << ", RemainingLoopCount=" << RemainingLoopCountdo { } while (false) | |||
| 3824 | << "\n")do { } while (false); | |||
| 3825 | return; | |||
| 3826 | case MachO::BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED: | |||
| 3827 | if (TableKind == Kind::Lazy) { | |||
| 3828 | *E = malformedError("BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED not " | |||
| 3829 | "allowed in lazy bind table for opcode at: 0x" + | |||
| 3830 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3831 | moveToEnd(); | |||
| 3832 | return; | |||
| 3833 | } | |||
| 3834 | if (SymbolName == StringRef()) { | |||
| 3835 | *E = malformedError( | |||
| 3836 | "for BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED " | |||
| 3837 | "missing preceding BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM for " | |||
| 3838 | "opcode at: 0x" + | |||
| 3839 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3840 | moveToEnd(); | |||
| 3841 | return; | |||
| 3842 | } | |||
| 3843 | if (!LibraryOrdinalSet && TableKind != Kind::Weak) { | |||
| 3844 | *E = malformedError( | |||
| 3845 | "for BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED " | |||
| 3846 | "missing preceding BIND_OPCODE_SET_DYLIB_ORDINAL_* for opcode " | |||
| 3847 | "at: 0x" + | |||
| 3848 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3849 | moveToEnd(); | |||
| 3850 | return; | |||
| 3851 | } | |||
| 3852 | AdvanceAmount = ImmValue * PointerSize + PointerSize; | |||
| 3853 | RemainingLoopCount = 0; | |||
| 3854 | error = O->BindEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset + | |||
| 3855 | AdvanceAmount, PointerSize); | |||
| 3856 | if (error) { | |||
| 3857 | *E = malformedError("for BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED " + | |||
| 3858 | Twine(error) + " for opcode at: 0x" + | |||
| 3859 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3860 | moveToEnd(); | |||
| 3861 | return; | |||
| 3862 | } | |||
| 3863 | DEBUG_WITH_TYPE("mach-o-bind",do { } while (false) | |||
| 3864 | dbgs()do { } while (false) | |||
| 3865 | << "BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED: "do { } while (false) | |||
| 3866 | << format("SegmentOffset=0x%06X", SegmentOffset) << "\n")do { } while (false); | |||
| 3867 | return; | |||
| 3868 | case MachO::BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB: | |||
| 3869 | if (TableKind == Kind::Lazy) { | |||
| 3870 | *E = malformedError("BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB not " | |||
| 3871 | "allowed in lazy bind table for opcode at: 0x" + | |||
| 3872 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3873 | moveToEnd(); | |||
| 3874 | return; | |||
| 3875 | } | |||
| 3876 | Count = readULEB128(&error); | |||
| 3877 | if (Count != 0) | |||
| 3878 | RemainingLoopCount = Count - 1; | |||
| 3879 | else | |||
| 3880 | RemainingLoopCount = 0; | |||
| 3881 | if (error) { | |||
| 3882 | *E = malformedError("for BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB " | |||
| 3883 | " (count value) " + | |||
| 3884 | Twine(error) + " for opcode at: 0x" + | |||
| 3885 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3886 | moveToEnd(); | |||
| 3887 | return; | |||
| 3888 | } | |||
| 3889 | Skip = readULEB128(&error); | |||
| 3890 | AdvanceAmount = Skip + PointerSize; | |||
| 3891 | if (error) { | |||
| 3892 | *E = malformedError("for BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB " | |||
| 3893 | " (skip value) " + | |||
| 3894 | Twine(error) + " for opcode at: 0x" + | |||
| 3895 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3896 | moveToEnd(); | |||
| 3897 | return; | |||
| 3898 | } | |||
| 3899 | if (SymbolName == StringRef()) { | |||
| 3900 | *E = malformedError( | |||
| 3901 | "for BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB " | |||
| 3902 | "missing preceding BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM for " | |||
| 3903 | "opcode at: 0x" + | |||
| 3904 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3905 | moveToEnd(); | |||
| 3906 | return; | |||
| 3907 | } | |||
| 3908 | if (!LibraryOrdinalSet && TableKind != Kind::Weak) { | |||
| 3909 | *E = malformedError( | |||
| 3910 | "for BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB " | |||
| 3911 | "missing preceding BIND_OPCODE_SET_DYLIB_ORDINAL_* for opcode " | |||
| 3912 | "at: 0x" + | |||
| 3913 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3914 | moveToEnd(); | |||
| 3915 | return; | |||
| 3916 | } | |||
| 3917 | error = O->BindEntryCheckSegAndOffsets(SegmentIndex, SegmentOffset, | |||
| 3918 | PointerSize, Count, Skip); | |||
| 3919 | if (error) { | |||
| 3920 | *E = | |||
| 3921 | malformedError("for BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB " + | |||
| 3922 | Twine(error) + " for opcode at: 0x" + | |||
| 3923 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3924 | moveToEnd(); | |||
| 3925 | return; | |||
| 3926 | } | |||
| 3927 | DEBUG_WITH_TYPE(do { } while (false) | |||
| 3928 | "mach-o-bind",do { } while (false) | |||
| 3929 | dbgs() << "BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB: "do { } while (false) | |||
| 3930 | << format("SegmentOffset=0x%06X", SegmentOffset)do { } while (false) | |||
| 3931 | << ", AdvanceAmount=" << AdvanceAmountdo { } while (false) | |||
| 3932 | << ", RemainingLoopCount=" << RemainingLoopCountdo { } while (false) | |||
| 3933 | << "\n")do { } while (false); | |||
| 3934 | return; | |||
| 3935 | default: | |||
| 3936 | *E = malformedError("bad bind info (bad opcode value 0x" + | |||
| 3937 | Twine::utohexstr(Opcode) + " for opcode at: 0x" + | |||
| 3938 | Twine::utohexstr(OpcodeStart - Opcodes.begin())); | |||
| 3939 | moveToEnd(); | |||
| 3940 | return; | |||
| 3941 | } | |||
| 3942 | } | |||
| 3943 | } | |||
| 3944 | ||||
| 3945 | uint64_t MachOBindEntry::readULEB128(const char **error) { | |||
| 3946 | unsigned Count; | |||
| 3947 | uint64_t Result = decodeULEB128(Ptr, &Count, Opcodes.end(), error); | |||
| 3948 | Ptr += Count; | |||
| 3949 | if (Ptr > Opcodes.end()) | |||
| 3950 | Ptr = Opcodes.end(); | |||
| 3951 | return Result; | |||
| 3952 | } | |||
| 3953 | ||||
| 3954 | int64_t MachOBindEntry::readSLEB128(const char **error) { | |||
| 3955 | unsigned Count; | |||
| 3956 | int64_t Result = decodeSLEB128(Ptr, &Count, Opcodes.end(), error); | |||
| 3957 | Ptr += Count; | |||
| 3958 | if (Ptr > Opcodes.end()) | |||
| 3959 | Ptr = Opcodes.end(); | |||
| 3960 | return Result; | |||
| 3961 | } | |||
| 3962 | ||||
| 3963 | int32_t MachOBindEntry::segmentIndex() const { return SegmentIndex; } | |||
| 3964 | ||||
| 3965 | uint64_t MachOBindEntry::segmentOffset() const { return SegmentOffset; } | |||
| 3966 | ||||
| 3967 | StringRef MachOBindEntry::typeName() const { | |||
| 3968 | switch (BindType) { | |||
| 3969 | case MachO::BIND_TYPE_POINTER: | |||
| 3970 | return "pointer"; | |||
| 3971 | case MachO::BIND_TYPE_TEXT_ABSOLUTE32: | |||
| 3972 | return "text abs32"; | |||
| 3973 | case MachO::BIND_TYPE_TEXT_PCREL32: | |||
| 3974 | return "text rel32"; | |||
| 3975 | } | |||
| 3976 | return "unknown"; | |||
| 3977 | } | |||
| 3978 | ||||
| 3979 | StringRef MachOBindEntry::symbolName() const { return SymbolName; } | |||
| 3980 | ||||
| 3981 | int64_t MachOBindEntry::addend() const { return Addend; } | |||
| 3982 | ||||
| 3983 | uint32_t MachOBindEntry::flags() const { return Flags; } | |||
| 3984 | ||||
| 3985 | int MachOBindEntry::ordinal() const { return Ordinal; } | |||
| 3986 | ||||
| 3987 | // For use with the SegIndex of a checked Mach-O Bind entry | |||
| 3988 | // to get the segment name. | |||
| 3989 | StringRef MachOBindEntry::segmentName() const { | |||
| 3990 | return O->BindRebaseSegmentName(SegmentIndex); | |||
| 3991 | } | |||
| 3992 | ||||
| 3993 | // For use with a SegIndex,SegOffset pair from a checked Mach-O Bind entry | |||
| 3994 | // to get the section name. | |||
| 3995 | StringRef MachOBindEntry::sectionName() const { | |||
| 3996 | return O->BindRebaseSectionName(SegmentIndex, SegmentOffset); | |||
| 3997 | } | |||
| 3998 | ||||
| 3999 | // For use with a SegIndex,SegOffset pair from a checked Mach-O Bind entry | |||
| 4000 | // to get the address. | |||
| 4001 | uint64_t MachOBindEntry::address() const { | |||
| 4002 | return O->BindRebaseAddress(SegmentIndex, SegmentOffset); | |||
| 4003 | } | |||
| 4004 | ||||
| 4005 | bool MachOBindEntry::operator==(const MachOBindEntry &Other) const { | |||
| 4006 | #ifdef EXPENSIVE_CHECKS | |||
| 4007 | assert(Opcodes == Other.Opcodes && "compare iterators of different files")((void)0); | |||
| 4008 | #else | |||
| 4009 | assert(Opcodes.data() == Other.Opcodes.data() && "compare iterators of different files")((void)0); | |||
| 4010 | #endif | |||
| 4011 | return (Ptr == Other.Ptr) && | |||
| 4012 | (RemainingLoopCount == Other.RemainingLoopCount) && | |||
| 4013 | (Done == Other.Done); | |||
| 4014 | } | |||
| 4015 | ||||
| 4016 | // Build table of sections so SegIndex/SegOffset pairs can be translated. | |||
| 4017 | BindRebaseSegInfo::BindRebaseSegInfo(const object::MachOObjectFile *Obj) { | |||
| 4018 | uint32_t CurSegIndex = Obj->hasPageZeroSegment() ? 1 : 0; | |||
| 4019 | StringRef CurSegName; | |||
| 4020 | uint64_t CurSegAddress; | |||
| 4021 | for (const SectionRef &Section : Obj->sections()) { | |||
| 4022 | SectionInfo Info; | |||
| 4023 | Expected<StringRef> NameOrErr = Section.getName(); | |||
| 4024 | if (!NameOrErr) | |||
| 4025 | consumeError(NameOrErr.takeError()); | |||
| 4026 | else | |||
| 4027 | Info.SectionName = *NameOrErr; | |||
| 4028 | Info.Address = Section.getAddress(); | |||
| 4029 | Info.Size = Section.getSize(); | |||
| 4030 | Info.SegmentName = | |||
| 4031 | Obj->getSectionFinalSegmentName(Section.getRawDataRefImpl()); | |||
| 4032 | if (!Info.SegmentName.equals(CurSegName)) { | |||
| 4033 | ++CurSegIndex; | |||
| 4034 | CurSegName = Info.SegmentName; | |||
| 4035 | CurSegAddress = Info.Address; | |||
| 4036 | } | |||
| 4037 | Info.SegmentIndex = CurSegIndex - 1; | |||
| 4038 | Info.OffsetInSegment = Info.Address - CurSegAddress; | |||
| ||||
| 4039 | Info.SegmentStartAddress = CurSegAddress; | |||
| 4040 | Sections.push_back(Info); | |||
| 4041 | } | |||
| 4042 | MaxSegIndex = CurSegIndex; | |||
| 4043 | } | |||
| 4044 | ||||
| 4045 | // For use with a SegIndex, SegOffset, and PointerSize triple in | |||
| 4046 | // MachOBindEntry::moveNext() to validate a MachOBindEntry or MachORebaseEntry. | |||
| 4047 | // | |||
| 4048 | // Given a SegIndex, SegOffset, and PointerSize, verify a valid section exists | |||
| 4049 | // that fully contains a pointer at that location. Multiple fixups in a bind | |||
| 4050 | // (such as with the BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB opcode) can | |||
| 4051 | // be tested via the Count and Skip parameters. | |||
| 4052 | const char * BindRebaseSegInfo::checkSegAndOffsets(int32_t SegIndex, | |||
| 4053 | uint64_t SegOffset, | |||
| 4054 | uint8_t PointerSize, | |||
| 4055 | uint32_t Count, | |||
| 4056 | uint32_t Skip) { | |||
| 4057 | if (SegIndex == -1) | |||
| 4058 | return "missing preceding *_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB"; | |||
| 4059 | if (SegIndex >= MaxSegIndex) | |||
| 4060 | return "bad segIndex (too large)"; | |||
| 4061 | for (uint32_t i = 0; i < Count; ++i) { | |||
| 4062 | uint32_t Start = SegOffset + i * (PointerSize + Skip); | |||
| 4063 | uint32_t End = Start + PointerSize; | |||
| 4064 | bool Found = false; | |||
| 4065 | for (const SectionInfo &SI : Sections) { | |||
| 4066 | if (SI.SegmentIndex != SegIndex) | |||
| 4067 | continue; | |||
| 4068 | if ((SI.OffsetInSegment<=Start) && (Start<(SI.OffsetInSegment+SI.Size))) { | |||
| 4069 | if (End <= SI.OffsetInSegment + SI.Size) { | |||
| 4070 | Found = true; | |||
| 4071 | break; | |||
| 4072 | } | |||
| 4073 | else | |||
| 4074 | return "bad offset, extends beyond section boundary"; | |||
| 4075 | } | |||
| 4076 | } | |||
| 4077 | if (!Found) | |||
| 4078 | return "bad offset, not in section"; | |||
| 4079 | } | |||
| 4080 | return nullptr; | |||
| 4081 | } | |||
| 4082 | ||||
| 4083 | // For use with the SegIndex of a checked Mach-O Bind or Rebase entry | |||
| 4084 | // to get the segment name. | |||
| 4085 | StringRef BindRebaseSegInfo::segmentName(int32_t SegIndex) { | |||
| 4086 | for (const SectionInfo &SI : Sections) { | |||
| 4087 | if (SI.SegmentIndex == SegIndex) | |||
| 4088 | return SI.SegmentName; | |||
| 4089 | } | |||
| 4090 | llvm_unreachable("invalid SegIndex")__builtin_unreachable(); | |||
| 4091 | } | |||
| 4092 | ||||
| 4093 | // For use with a SegIndex,SegOffset pair from a checked Mach-O Bind or Rebase | |||
| 4094 | // to get the SectionInfo. | |||
| 4095 | const BindRebaseSegInfo::SectionInfo &BindRebaseSegInfo::findSection( | |||
| 4096 | int32_t SegIndex, uint64_t SegOffset) { | |||
| 4097 | for (const SectionInfo &SI : Sections) { | |||
| 4098 | if (SI.SegmentIndex != SegIndex) | |||
| 4099 | continue; | |||
| 4100 | if (SI.OffsetInSegment > SegOffset) | |||
| 4101 | continue; | |||
| 4102 | if (SegOffset >= (SI.OffsetInSegment + SI.Size)) | |||
| 4103 | continue; | |||
| 4104 | return SI; | |||
| 4105 | } | |||
| 4106 | llvm_unreachable("SegIndex and SegOffset not in any section")__builtin_unreachable(); | |||
| 4107 | } | |||
| 4108 | ||||
| 4109 | // For use with a SegIndex,SegOffset pair from a checked Mach-O Bind or Rebase | |||
| 4110 | // entry to get the section name. | |||
| 4111 | StringRef BindRebaseSegInfo::sectionName(int32_t SegIndex, | |||
| 4112 | uint64_t SegOffset) { | |||
| 4113 | return findSection(SegIndex, SegOffset).SectionName; | |||
| 4114 | } | |||
| 4115 | ||||
| 4116 | // For use with a SegIndex,SegOffset pair from a checked Mach-O Bind or Rebase | |||
| 4117 | // entry to get the address. | |||
| 4118 | uint64_t BindRebaseSegInfo::address(uint32_t SegIndex, uint64_t OffsetInSeg) { | |||
| 4119 | const SectionInfo &SI = findSection(SegIndex, OffsetInSeg); | |||
| 4120 | return SI.SegmentStartAddress + OffsetInSeg; | |||
| 4121 | } | |||
| 4122 | ||||
| 4123 | iterator_range<bind_iterator> | |||
| 4124 | MachOObjectFile::bindTable(Error &Err, MachOObjectFile *O, | |||
| 4125 | ArrayRef<uint8_t> Opcodes, bool is64, | |||
| 4126 | MachOBindEntry::Kind BKind) { | |||
| 4127 | if (O->BindRebaseSectionTable == nullptr) | |||
| 4128 | O->BindRebaseSectionTable = std::make_unique<BindRebaseSegInfo>(O); | |||
| 4129 | MachOBindEntry Start(&Err, O, Opcodes, is64, BKind); | |||
| 4130 | Start.moveToFirst(); | |||
| 4131 | ||||
| 4132 | MachOBindEntry Finish(&Err, O, Opcodes, is64, BKind); | |||
| 4133 | Finish.moveToEnd(); | |||
| 4134 | ||||
| 4135 | return make_range(bind_iterator(Start), bind_iterator(Finish)); | |||
| 4136 | } | |||
| 4137 | ||||
| 4138 | iterator_range<bind_iterator> MachOObjectFile::bindTable(Error &Err) { | |||
| 4139 | return bindTable(Err, this, getDyldInfoBindOpcodes(), is64Bit(), | |||
| 4140 | MachOBindEntry::Kind::Regular); | |||
| 4141 | } | |||
| 4142 | ||||
| 4143 | iterator_range<bind_iterator> MachOObjectFile::lazyBindTable(Error &Err) { | |||
| 4144 | return bindTable(Err, this, getDyldInfoLazyBindOpcodes(), is64Bit(), | |||
| 4145 | MachOBindEntry::Kind::Lazy); | |||
| 4146 | } | |||
| 4147 | ||||
| 4148 | iterator_range<bind_iterator> MachOObjectFile::weakBindTable(Error &Err) { | |||
| 4149 | return bindTable(Err, this, getDyldInfoWeakBindOpcodes(), is64Bit(), | |||
| ||||
| 4150 | MachOBindEntry::Kind::Weak); | |||
| 4151 | } | |||
| 4152 | ||||
| 4153 | MachOObjectFile::load_command_iterator | |||
| 4154 | MachOObjectFile::begin_load_commands() const { | |||
| 4155 | return LoadCommands.begin(); | |||
| 4156 | } | |||
| 4157 | ||||
| 4158 | MachOObjectFile::load_command_iterator | |||
| 4159 | MachOObjectFile::end_load_commands() const { | |||
| 4160 | return LoadCommands.end(); | |||
| 4161 | } | |||
| 4162 | ||||
| 4163 | iterator_range<MachOObjectFile::load_command_iterator> | |||
| 4164 | MachOObjectFile::load_commands() const { | |||
| 4165 | return make_range(begin_load_commands(), end_load_commands()); | |||
| 4166 | } | |||
| 4167 | ||||
| 4168 | StringRef | |||
| 4169 | MachOObjectFile::getSectionFinalSegmentName(DataRefImpl Sec) const { | |||
| 4170 | ArrayRef<char> Raw = getSectionRawFinalSegmentName(Sec); | |||
| 4171 | return parseSegmentOrSectionName(Raw.data()); | |||
| 4172 | } | |||
| 4173 | ||||
| 4174 | ArrayRef<char> | |||
| 4175 | MachOObjectFile::getSectionRawName(DataRefImpl Sec) const { | |||
| 4176 | assert(Sec.d.a < Sections.size() && "Should have detected this earlier")((void)0); | |||
| 4177 | const section_base *Base = | |||
| 4178 | reinterpret_cast<const section_base *>(Sections[Sec.d.a]); | |||
| 4179 | return makeArrayRef(Base->sectname); | |||
| 4180 | } | |||
| 4181 | ||||
| 4182 | ArrayRef<char> | |||
| 4183 | MachOObjectFile::getSectionRawFinalSegmentName(DataRefImpl Sec) const { | |||
| 4184 | assert(Sec.d.a < Sections.size() && "Should have detected this earlier")((void)0); | |||
| 4185 | const section_base *Base = | |||
| 4186 | reinterpret_cast<const section_base *>(Sections[Sec.d.a]); | |||
| 4187 | return makeArrayRef(Base->segname); | |||
| 4188 | } | |||
| 4189 | ||||
| 4190 | bool | |||
| 4191 | MachOObjectFile::isRelocationScattered(const MachO::any_relocation_info &RE) | |||
| 4192 | const { | |||
| 4193 | if (getCPUType(*this) == MachO::CPU_TYPE_X86_64) | |||
| 4194 | return false; | |||
| 4195 | return getPlainRelocationAddress(RE) & MachO::R_SCATTERED; | |||
| 4196 | } | |||
| 4197 | ||||
| 4198 | unsigned MachOObjectFile::getPlainRelocationSymbolNum( | |||
| 4199 | const MachO::any_relocation_info &RE) const { | |||
| 4200 | if (isLittleEndian()) | |||
| 4201 | return RE.r_word1 & 0xffffff; | |||
| 4202 | return RE.r_word1 >> 8; | |||
| 4203 | } | |||
| 4204 | ||||
| 4205 | bool MachOObjectFile::getPlainRelocationExternal( | |||
| 4206 | const MachO::any_relocation_info &RE) const { | |||
| 4207 | if (isLittleEndian()) | |||
| 4208 | return (RE.r_word1 >> 27) & 1; | |||
| 4209 | return (RE.r_word1 >> 4) & 1; | |||
| 4210 | } | |||
| 4211 | ||||
| 4212 | bool MachOObjectFile::getScatteredRelocationScattered( | |||
| 4213 | const MachO::any_relocation_info &RE) const { | |||
| 4214 | return RE.r_word0 >> 31; | |||
| 4215 | } | |||
| 4216 | ||||
| 4217 | uint32_t MachOObjectFile::getScatteredRelocationValue( | |||
| 4218 | const MachO::any_relocation_info &RE) const { | |||
| 4219 | return RE.r_word1; | |||
| 4220 | } | |||
| 4221 | ||||
| 4222 | uint32_t MachOObjectFile::getScatteredRelocationType( | |||
| 4223 | const MachO::any_relocation_info &RE) const { | |||
| 4224 | return (RE.r_word0 >> 24) & 0xf; | |||
| 4225 | } | |||
| 4226 | ||||
| 4227 | unsigned MachOObjectFile::getAnyRelocationAddress( | |||
| 4228 | const MachO::any_relocation_info &RE) const { | |||
| 4229 | if (isRelocationScattered(RE)) | |||
| 4230 | return getScatteredRelocationAddress(RE); | |||
| 4231 | return getPlainRelocationAddress(RE); | |||
| 4232 | } | |||
| 4233 | ||||
| 4234 | unsigned MachOObjectFile::getAnyRelocationPCRel( | |||
| 4235 | const MachO::any_relocation_info &RE) const { | |||
| 4236 | if (isRelocationScattered(RE)) | |||
| 4237 | return getScatteredRelocationPCRel(RE); | |||
| 4238 | return getPlainRelocationPCRel(*this, RE); | |||
| 4239 | } | |||
| 4240 | ||||
| 4241 | unsigned MachOObjectFile::getAnyRelocationLength( | |||
| 4242 | const MachO::any_relocation_info &RE) const { | |||
| 4243 | if (isRelocationScattered(RE)) | |||
| 4244 | return getScatteredRelocationLength(RE); | |||
| 4245 | return getPlainRelocationLength(*this, RE); | |||
| 4246 | } | |||
| 4247 | ||||
| 4248 | unsigned | |||
| 4249 | MachOObjectFile::getAnyRelocationType( | |||
| 4250 | const MachO::any_relocation_info &RE) const { | |||
| 4251 | if (isRelocationScattered(RE)) | |||
| 4252 | return getScatteredRelocationType(RE); | |||
| 4253 | return getPlainRelocationType(*this, RE); | |||
| 4254 | } | |||
| 4255 | ||||
| 4256 | SectionRef | |||
| 4257 | MachOObjectFile::getAnyRelocationSection( | |||
| 4258 | const MachO::any_relocation_info &RE) const { | |||
| 4259 | if (isRelocationScattered(RE) || getPlainRelocationExternal(RE)) | |||
| 4260 | return *section_end(); | |||
| 4261 | unsigned SecNum = getPlainRelocationSymbolNum(RE); | |||
| 4262 | if (SecNum == MachO::R_ABS || SecNum > Sections.size()) | |||
| 4263 | return *section_end(); | |||
| 4264 | DataRefImpl DRI; | |||
| 4265 | DRI.d.a = SecNum - 1; | |||
| 4266 | return SectionRef(DRI, this); | |||
| 4267 | } | |||
| 4268 | ||||
| 4269 | MachO::section MachOObjectFile::getSection(DataRefImpl DRI) const { | |||
| 4270 | assert(DRI.d.a < Sections.size() && "Should have detected this earlier")((void)0); | |||
| 4271 | return getStruct<MachO::section>(*this, Sections[DRI.d.a]); | |||
| 4272 | } | |||
| 4273 | ||||
| 4274 | MachO::section_64 MachOObjectFile::getSection64(DataRefImpl DRI) const { | |||
| 4275 | assert(DRI.d.a < Sections.size() && "Should have detected this earlier")((void)0); | |||
| 4276 | return getStruct<MachO::section_64>(*this, Sections[DRI.d.a]); | |||
| 4277 | } | |||
| 4278 | ||||
| 4279 | MachO::section MachOObjectFile::getSection(const LoadCommandInfo &L, | |||
| 4280 | unsigned Index) const { | |||
| 4281 | const char *Sec = getSectionPtr(*this, L, Index); | |||
| 4282 | return getStruct<MachO::section>(*this, Sec); | |||
| 4283 | } | |||
| 4284 | ||||
| 4285 | MachO::section_64 MachOObjectFile::getSection64(const LoadCommandInfo &L, | |||
| 4286 | unsigned Index) const { | |||
| 4287 | const char *Sec = getSectionPtr(*this, L, Index); | |||
| 4288 | return getStruct<MachO::section_64>(*this, Sec); | |||
| 4289 | } | |||
| 4290 | ||||
| 4291 | MachO::nlist | |||
| 4292 | MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI) const { | |||
| 4293 | const char *P = reinterpret_cast<const char *>(DRI.p); | |||
| 4294 | return getStruct<MachO::nlist>(*this, P); | |||
| 4295 | } | |||
| 4296 | ||||
| 4297 | MachO::nlist_64 | |||
| 4298 | MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI) const { | |||
| 4299 | const char *P = reinterpret_cast<const char *>(DRI.p); | |||
| 4300 | return getStruct<MachO::nlist_64>(*this, P); | |||
| 4301 | } | |||
| 4302 | ||||
| 4303 | MachO::linkedit_data_command | |||
| 4304 | MachOObjectFile::getLinkeditDataLoadCommand(const LoadCommandInfo &L) const { | |||
| 4305 | return getStruct<MachO::linkedit_data_command>(*this, L.Ptr); | |||
| 4306 | } | |||
| 4307 | ||||
| 4308 | MachO::segment_command | |||
| 4309 | MachOObjectFile::getSegmentLoadCommand(const LoadCommandInfo &L) const { | |||
| 4310 | return getStruct<MachO::segment_command>(*this, L.Ptr); | |||
| 4311 | } | |||
| 4312 | ||||
| 4313 | MachO::segment_command_64 | |||
| 4314 | MachOObjectFile::getSegment64LoadCommand(const LoadCommandInfo &L) const { | |||
| 4315 | return getStruct<MachO::segment_command_64>(*this, L.Ptr); | |||
| 4316 | } | |||
| 4317 | ||||
| 4318 | MachO::linker_option_command | |||
| 4319 | MachOObjectFile::getLinkerOptionLoadCommand(const LoadCommandInfo &L) const { | |||
| 4320 | return getStruct<MachO::linker_option_command>(*this, L.Ptr); | |||
| 4321 | } | |||
| 4322 | ||||
| 4323 | MachO::version_min_command | |||
| 4324 | MachOObjectFile::getVersionMinLoadCommand(const LoadCommandInfo &L) const { | |||
| 4325 | return getStruct<MachO::version_min_command>(*this, L.Ptr); | |||
| 4326 | } | |||
| 4327 | ||||
| 4328 | MachO::note_command | |||
| 4329 | MachOObjectFile::getNoteLoadCommand(const LoadCommandInfo &L) const { | |||
| 4330 | return getStruct<MachO::note_command>(*this, L.Ptr); | |||
| 4331 | } | |||
| 4332 | ||||
| 4333 | MachO::build_version_command | |||
| 4334 | MachOObjectFile::getBuildVersionLoadCommand(const LoadCommandInfo &L) const { | |||
| 4335 | return getStruct<MachO::build_version_command>(*this, L.Ptr); | |||
| 4336 | } | |||
| 4337 | ||||
| 4338 | MachO::build_tool_version | |||
| 4339 | MachOObjectFile::getBuildToolVersion(unsigned index) const { | |||
| 4340 | return getStruct<MachO::build_tool_version>(*this, BuildTools[index]); | |||
| 4341 | } | |||
| 4342 | ||||
| 4343 | MachO::dylib_command | |||
| 4344 | MachOObjectFile::getDylibIDLoadCommand(const LoadCommandInfo &L) const { | |||
| 4345 | return getStruct<MachO::dylib_command>(*this, L.Ptr); | |||
| 4346 | } | |||
| 4347 | ||||
| 4348 | MachO::dyld_info_command | |||
| 4349 | MachOObjectFile::getDyldInfoLoadCommand(const LoadCommandInfo &L) const { | |||
| 4350 | return getStruct<MachO::dyld_info_command>(*this, L.Ptr); | |||
| 4351 | } | |||
| 4352 | ||||
| 4353 | MachO::dylinker_command | |||
| 4354 | MachOObjectFile::getDylinkerCommand(const LoadCommandInfo &L) const { | |||
| 4355 | return getStruct<MachO::dylinker_command>(*this, L.Ptr); | |||
| 4356 | } | |||
| 4357 | ||||
| 4358 | MachO::uuid_command | |||
| 4359 | MachOObjectFile::getUuidCommand(const LoadCommandInfo &L) const { | |||
| 4360 | return getStruct<MachO::uuid_command>(*this, L.Ptr); | |||
| 4361 | } | |||
| 4362 | ||||
| 4363 | MachO::rpath_command | |||
| 4364 | MachOObjectFile::getRpathCommand(const LoadCommandInfo &L) const { | |||
| 4365 | return getStruct<MachO::rpath_command>(*this, L.Ptr); | |||
| 4366 | } | |||
| 4367 | ||||
| 4368 | MachO::source_version_command | |||
| 4369 | MachOObjectFile::getSourceVersionCommand(const LoadCommandInfo &L) const { | |||
| 4370 | return getStruct<MachO::source_version_command>(*this, L.Ptr); | |||
| 4371 | } | |||
| 4372 | ||||
| 4373 | MachO::entry_point_command | |||
| 4374 | MachOObjectFile::getEntryPointCommand(const LoadCommandInfo &L) const { | |||
| 4375 | return getStruct<MachO::entry_point_command>(*this, L.Ptr); | |||
| 4376 | } | |||
| 4377 | ||||
| 4378 | MachO::encryption_info_command | |||
| 4379 | MachOObjectFile::getEncryptionInfoCommand(const LoadCommandInfo &L) const { | |||
| 4380 | return getStruct<MachO::encryption_info_command>(*this, L.Ptr); | |||
| 4381 | } | |||
| 4382 | ||||
| 4383 | MachO::encryption_info_command_64 | |||
| 4384 | MachOObjectFile::getEncryptionInfoCommand64(const LoadCommandInfo &L) const { | |||
| 4385 | return getStruct<MachO::encryption_info_command_64>(*this, L.Ptr); | |||
| 4386 | } | |||
| 4387 | ||||
| 4388 | MachO::sub_framework_command | |||
| 4389 | MachOObjectFile::getSubFrameworkCommand(const LoadCommandInfo &L) const { | |||
| 4390 | return getStruct<MachO::sub_framework_command>(*this, L.Ptr); | |||
| 4391 | } | |||
| 4392 | ||||
| 4393 | MachO::sub_umbrella_command | |||
| 4394 | MachOObjectFile::getSubUmbrellaCommand(const LoadCommandInfo &L) const { | |||
| 4395 | return getStruct<MachO::sub_umbrella_command>(*this, L.Ptr); | |||
| 4396 | } | |||
| 4397 | ||||
| 4398 | MachO::sub_library_command | |||
| 4399 | MachOObjectFile::getSubLibraryCommand(const LoadCommandInfo &L) const { | |||
| 4400 | return getStruct<MachO::sub_library_command>(*this, L.Ptr); | |||
| 4401 | } | |||
| 4402 | ||||
| 4403 | MachO::sub_client_command | |||
| 4404 | MachOObjectFile::getSubClientCommand(const LoadCommandInfo &L) const { | |||
| 4405 | return getStruct<MachO::sub_client_command>(*this, L.Ptr); | |||
| 4406 | } | |||
| 4407 | ||||
| 4408 | MachO::routines_command | |||
| 4409 | MachOObjectFile::getRoutinesCommand(const LoadCommandInfo &L) const { | |||
| 4410 | return getStruct<MachO::routines_command>(*this, L.Ptr); | |||
| 4411 | } | |||
| 4412 | ||||
| 4413 | MachO::routines_command_64 | |||
| 4414 | MachOObjectFile::getRoutinesCommand64(const LoadCommandInfo &L) const { | |||
| 4415 | return getStruct<MachO::routines_command_64>(*this, L.Ptr); | |||
| 4416 | } | |||
| 4417 | ||||
| 4418 | MachO::thread_command | |||
| 4419 | MachOObjectFile::getThreadCommand(const LoadCommandInfo &L) const { | |||
| 4420 | return getStruct<MachO::thread_command>(*this, L.Ptr); | |||
| 4421 | } | |||
| 4422 | ||||
| 4423 | MachO::any_relocation_info | |||
| 4424 | MachOObjectFile::getRelocation(DataRefImpl Rel) const { | |||
| 4425 | uint32_t Offset; | |||
| 4426 | if (getHeader().filetype == MachO::MH_OBJECT) { | |||
| 4427 | DataRefImpl Sec; | |||
| 4428 | Sec.d.a = Rel.d.a; | |||
| 4429 | if (is64Bit()) { | |||
| 4430 | MachO::section_64 Sect = getSection64(Sec); | |||
| 4431 | Offset = Sect.reloff; | |||
| 4432 | } else { | |||
| 4433 | MachO::section Sect = getSection(Sec); | |||
| 4434 | Offset = Sect.reloff; | |||
| 4435 | } | |||
| 4436 | } else { | |||
| 4437 | MachO::dysymtab_command DysymtabLoadCmd = getDysymtabLoadCommand(); | |||
| 4438 | if (Rel.d.a == 0) | |||
| 4439 | Offset = DysymtabLoadCmd.extreloff; // Offset to the external relocations | |||
| 4440 | else | |||
| 4441 | Offset = DysymtabLoadCmd.locreloff; // Offset to the local relocations | |||
| 4442 | } | |||
| 4443 | ||||
| 4444 | auto P = reinterpret_cast<const MachO::any_relocation_info *>( | |||
| 4445 | getPtr(*this, Offset)) + Rel.d.b; | |||
| 4446 | return getStruct<MachO::any_relocation_info>( | |||
| 4447 | *this, reinterpret_cast<const char *>(P)); | |||
| 4448 | } | |||
| 4449 | ||||
| 4450 | MachO::data_in_code_entry | |||
| 4451 | MachOObjectFile::getDice(DataRefImpl Rel) const { | |||
| 4452 | const char *P = reinterpret_cast<const char *>(Rel.p); | |||
| 4453 | return getStruct<MachO::data_in_code_entry>(*this, P); | |||
| 4454 | } | |||
| 4455 | ||||
| 4456 | const MachO::mach_header &MachOObjectFile::getHeader() const { | |||
| 4457 | return Header; | |||
| 4458 | } | |||
| 4459 | ||||
| 4460 | const MachO::mach_header_64 &MachOObjectFile::getHeader64() const { | |||
| 4461 | assert(is64Bit())((void)0); | |||
| 4462 | return Header64; | |||
| 4463 | } | |||
| 4464 | ||||
| 4465 | uint32_t MachOObjectFile::getIndirectSymbolTableEntry( | |||
| 4466 | const MachO::dysymtab_command &DLC, | |||
| 4467 | unsigned Index) const { | |||
| 4468 | uint64_t Offset = DLC.indirectsymoff + Index * sizeof(uint32_t); | |||
| 4469 | return getStruct<uint32_t>(*this, getPtr(*this, Offset)); | |||
| 4470 | } | |||
| 4471 | ||||
| 4472 | MachO::data_in_code_entry | |||
| 4473 | MachOObjectFile::getDataInCodeTableEntry(uint32_t DataOffset, | |||
| 4474 | unsigned Index) const { | |||
| 4475 | uint64_t Offset = DataOffset + Index * sizeof(MachO::data_in_code_entry); | |||
| 4476 | return getStruct<MachO::data_in_code_entry>(*this, getPtr(*this, Offset)); | |||
| 4477 | } | |||
| 4478 | ||||
| 4479 | MachO::symtab_command MachOObjectFile::getSymtabLoadCommand() const { | |||
| 4480 | if (SymtabLoadCmd) | |||
| 4481 | return getStruct<MachO::symtab_command>(*this, SymtabLoadCmd); | |||
| 4482 | ||||
| 4483 | // If there is no SymtabLoadCmd return a load command with zero'ed fields. | |||
| 4484 | MachO::symtab_command Cmd; | |||
| 4485 | Cmd.cmd = MachO::LC_SYMTAB; | |||
| 4486 | Cmd.cmdsize = sizeof(MachO::symtab_command); | |||
| 4487 | Cmd.symoff = 0; | |||
| 4488 | Cmd.nsyms = 0; | |||
| 4489 | Cmd.stroff = 0; | |||
| 4490 | Cmd.strsize = 0; | |||
| 4491 | return Cmd; | |||
| 4492 | } | |||
| 4493 | ||||
| 4494 | MachO::dysymtab_command MachOObjectFile::getDysymtabLoadCommand() const { | |||
| 4495 | if (DysymtabLoadCmd) | |||
| 4496 | return getStruct<MachO::dysymtab_command>(*this, DysymtabLoadCmd); | |||
| 4497 | ||||
| 4498 | // If there is no DysymtabLoadCmd return a load command with zero'ed fields. | |||
| 4499 | MachO::dysymtab_command Cmd; | |||
| 4500 | Cmd.cmd = MachO::LC_DYSYMTAB; | |||
| 4501 | Cmd.cmdsize = sizeof(MachO::dysymtab_command); | |||
| 4502 | Cmd.ilocalsym = 0; | |||
| 4503 | Cmd.nlocalsym = 0; | |||
| 4504 | Cmd.iextdefsym = 0; | |||
| 4505 | Cmd.nextdefsym = 0; | |||
| 4506 | Cmd.iundefsym = 0; | |||
| 4507 | Cmd.nundefsym = 0; | |||
| 4508 | Cmd.tocoff = 0; | |||
| 4509 | Cmd.ntoc = 0; | |||
| 4510 | Cmd.modtaboff = 0; | |||
| 4511 | Cmd.nmodtab = 0; | |||
| 4512 | Cmd.extrefsymoff = 0; | |||
| 4513 | Cmd.nextrefsyms = 0; | |||
| 4514 | Cmd.indirectsymoff = 0; | |||
| 4515 | Cmd.nindirectsyms = 0; | |||
| 4516 | Cmd.extreloff = 0; | |||
| 4517 | Cmd.nextrel = 0; | |||
| 4518 | Cmd.locreloff = 0; | |||
| 4519 | Cmd.nlocrel = 0; | |||
| 4520 | return Cmd; | |||
| 4521 | } | |||
| 4522 | ||||
| 4523 | MachO::linkedit_data_command | |||
| 4524 | MachOObjectFile::getDataInCodeLoadCommand() const { | |||
| 4525 | if (DataInCodeLoadCmd) | |||
| 4526 | return getStruct<MachO::linkedit_data_command>(*this, DataInCodeLoadCmd); | |||
| 4527 | ||||
| 4528 | // If there is no DataInCodeLoadCmd return a load command with zero'ed fields. | |||
| 4529 | MachO::linkedit_data_command Cmd; | |||
| 4530 | Cmd.cmd = MachO::LC_DATA_IN_CODE; | |||
| 4531 | Cmd.cmdsize = sizeof(MachO::linkedit_data_command); | |||
| 4532 | Cmd.dataoff = 0; | |||
| 4533 | Cmd.datasize = 0; | |||
| 4534 | return Cmd; | |||
| 4535 | } | |||
| 4536 | ||||
| 4537 | MachO::linkedit_data_command | |||
| 4538 | MachOObjectFile::getLinkOptHintsLoadCommand() const { | |||
| 4539 | if (LinkOptHintsLoadCmd) | |||
| 4540 | return getStruct<MachO::linkedit_data_command>(*this, LinkOptHintsLoadCmd); | |||
| 4541 | ||||
| 4542 | // If there is no LinkOptHintsLoadCmd return a load command with zero'ed | |||
| 4543 | // fields. | |||
| 4544 | MachO::linkedit_data_command Cmd; | |||
| 4545 | Cmd.cmd = MachO::LC_LINKER_OPTIMIZATION_HINT; | |||
| 4546 | Cmd.cmdsize = sizeof(MachO::linkedit_data_command); | |||
| 4547 | Cmd.dataoff = 0; | |||
| 4548 | Cmd.datasize = 0; | |||
| 4549 | return Cmd; | |||
| 4550 | } | |||
| 4551 | ||||
| 4552 | ArrayRef<uint8_t> MachOObjectFile::getDyldInfoRebaseOpcodes() const { | |||
| 4553 | if (!DyldInfoLoadCmd) | |||
| 4554 | return None; | |||
| 4555 | ||||
| 4556 | auto DyldInfoOrErr = | |||
| 4557 | getStructOrErr<MachO::dyld_info_command>(*this, DyldInfoLoadCmd); | |||
| 4558 | if (!DyldInfoOrErr) | |||
| 4559 | return None; | |||
| 4560 | MachO::dyld_info_command DyldInfo = DyldInfoOrErr.get(); | |||
| 4561 | const uint8_t *Ptr = | |||
| 4562 | reinterpret_cast<const uint8_t *>(getPtr(*this, DyldInfo.rebase_off)); | |||
| 4563 | return makeArrayRef(Ptr, DyldInfo.rebase_size); | |||
| 4564 | } | |||
| 4565 | ||||
| 4566 | ArrayRef<uint8_t> MachOObjectFile::getDyldInfoBindOpcodes() const { | |||
| 4567 | if (!DyldInfoLoadCmd) | |||
| 4568 | return None; | |||
| 4569 | ||||
| 4570 | auto DyldInfoOrErr = | |||
| 4571 | getStructOrErr<MachO::dyld_info_command>(*this, DyldInfoLoadCmd); | |||
| 4572 | if (!DyldInfoOrErr) | |||
| 4573 | return None; | |||
| 4574 | MachO::dyld_info_command DyldInfo = DyldInfoOrErr.get(); | |||
| 4575 | const uint8_t *Ptr = | |||
| 4576 | reinterpret_cast<const uint8_t *>(getPtr(*this, DyldInfo.bind_off)); | |||
| 4577 | return makeArrayRef(Ptr, DyldInfo.bind_size); | |||
| 4578 | } | |||
| 4579 | ||||
| 4580 | ArrayRef<uint8_t> MachOObjectFile::getDyldInfoWeakBindOpcodes() const { | |||
| 4581 | if (!DyldInfoLoadCmd) | |||
| 4582 | return None; | |||
| 4583 | ||||
| 4584 | auto DyldInfoOrErr = | |||
| 4585 | getStructOrErr<MachO::dyld_info_command>(*this, DyldInfoLoadCmd); | |||
| 4586 | if (!DyldInfoOrErr) | |||
| 4587 | return None; | |||
| 4588 | MachO::dyld_info_command DyldInfo = DyldInfoOrErr.get(); | |||
| 4589 | const uint8_t *Ptr = | |||
| 4590 | reinterpret_cast<const uint8_t *>(getPtr(*this, DyldInfo.weak_bind_off)); | |||
| 4591 | return makeArrayRef(Ptr, DyldInfo.weak_bind_size); | |||
| 4592 | } | |||
| 4593 | ||||
| 4594 | ArrayRef<uint8_t> MachOObjectFile::getDyldInfoLazyBindOpcodes() const { | |||
| 4595 | if (!DyldInfoLoadCmd) | |||
| 4596 | return None; | |||
| 4597 | ||||
| 4598 | auto DyldInfoOrErr = | |||
| 4599 | getStructOrErr<MachO::dyld_info_command>(*this, DyldInfoLoadCmd); | |||
| 4600 | if (!DyldInfoOrErr) | |||
| 4601 | return None; | |||
| 4602 | MachO::dyld_info_command DyldInfo = DyldInfoOrErr.get(); | |||
| 4603 | const uint8_t *Ptr = | |||
| 4604 | reinterpret_cast<const uint8_t *>(getPtr(*this, DyldInfo.lazy_bind_off)); | |||
| 4605 | return makeArrayRef(Ptr, DyldInfo.lazy_bind_size); | |||
| 4606 | } | |||
| 4607 | ||||
| 4608 | ArrayRef<uint8_t> MachOObjectFile::getDyldInfoExportsTrie() const { | |||
| 4609 | if (!DyldInfoLoadCmd) | |||
| 4610 | return None; | |||
| 4611 | ||||
| 4612 | auto DyldInfoOrErr = | |||
| 4613 | getStructOrErr<MachO::dyld_info_command>(*this, DyldInfoLoadCmd); | |||
| 4614 | if (!DyldInfoOrErr) | |||
| 4615 | return None; | |||
| 4616 | MachO::dyld_info_command DyldInfo = DyldInfoOrErr.get(); | |||
| 4617 | const uint8_t *Ptr = | |||
| 4618 | reinterpret_cast<const uint8_t *>(getPtr(*this, DyldInfo.export_off)); | |||
| 4619 | return makeArrayRef(Ptr, DyldInfo.export_size); | |||
| 4620 | } | |||
| 4621 | ||||
| 4622 | ArrayRef<uint8_t> MachOObjectFile::getUuid() const { | |||
| 4623 | if (!UuidLoadCmd) | |||
| 4624 | return None; | |||
| 4625 | // Returning a pointer is fine as uuid doesn't need endian swapping. | |||
| 4626 | const char *Ptr = UuidLoadCmd + offsetof(MachO::uuid_command, uuid)__builtin_offsetof(MachO::uuid_command, uuid); | |||
| 4627 | return makeArrayRef(reinterpret_cast<const uint8_t *>(Ptr), 16); | |||
| 4628 | } | |||
| 4629 | ||||
| 4630 | StringRef MachOObjectFile::getStringTableData() const { | |||
| 4631 | MachO::symtab_command S = getSymtabLoadCommand(); | |||
| 4632 | return getData().substr(S.stroff, S.strsize); | |||
| 4633 | } | |||
| 4634 | ||||
| 4635 | bool MachOObjectFile::is64Bit() const { | |||
| 4636 | return getType() == getMachOType(false, true) || | |||
| 4637 | getType() == getMachOType(true, true); | |||
| 4638 | } | |||
| 4639 | ||||
| 4640 | void MachOObjectFile::ReadULEB128s(uint64_t Index, | |||
| 4641 | SmallVectorImpl<uint64_t> &Out) const { | |||
| 4642 | DataExtractor extractor(ObjectFile::getData(), true, 0); | |||
| 4643 | ||||
| 4644 | uint64_t offset = Index; | |||
| 4645 | uint64_t data = 0; | |||
| 4646 | while (uint64_t delta = extractor.getULEB128(&offset)) { | |||
| 4647 | data += delta; | |||
| 4648 | Out.push_back(data); | |||
| 4649 | } | |||
| 4650 | } | |||
| 4651 | ||||
| 4652 | bool MachOObjectFile::isRelocatableObject() const { | |||
| 4653 | return getHeader().filetype == MachO::MH_OBJECT; | |||
| 4654 | } | |||
| 4655 | ||||
| 4656 | Expected<std::unique_ptr<MachOObjectFile>> | |||
| 4657 | ObjectFile::createMachOObjectFile(MemoryBufferRef Buffer, | |||
| 4658 | uint32_t UniversalCputype, | |||
| 4659 | uint32_t UniversalIndex) { | |||
| 4660 | StringRef Magic = Buffer.getBuffer().slice(0, 4); | |||
| 4661 | if (Magic == "\xFE\xED\xFA\xCE") | |||
| 4662 | return MachOObjectFile::create(Buffer, false, false, | |||
| 4663 | UniversalCputype, UniversalIndex); | |||
| 4664 | if (Magic == "\xCE\xFA\xED\xFE") | |||
| 4665 | return MachOObjectFile::create(Buffer, true, false, | |||
| 4666 | UniversalCputype, UniversalIndex); | |||
| 4667 | if (Magic == "\xFE\xED\xFA\xCF") | |||
| 4668 | return MachOObjectFile::create(Buffer, false, true, | |||
| 4669 | UniversalCputype, UniversalIndex); | |||
| 4670 | if (Magic == "\xCF\xFA\xED\xFE") | |||
| 4671 | return MachOObjectFile::create(Buffer, true, true, | |||
| 4672 | UniversalCputype, UniversalIndex); | |||
| 4673 | return make_error<GenericBinaryError>("Unrecognized MachO magic number", | |||
| 4674 | object_error::invalid_file_type); | |||
| 4675 | } | |||
| 4676 | ||||
| 4677 | StringRef MachOObjectFile::mapDebugSectionName(StringRef Name) const { | |||
| 4678 | return StringSwitch<StringRef>(Name) | |||
| 4679 | .Case("debug_str_offs", "debug_str_offsets") | |||
| 4680 | .Default(Name); | |||
| 4681 | } |
| 1 | // -*- C++ -*- |
| 2 | //===----------------------------------------------------------------------===// |
| 3 | // |
| 4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 5 | // See https://llvm.org/LICENSE.txt for license information. |
| 6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #ifndef _LIBCPP___MEMORY_UNIQUE_PTR_H |
| 11 | #define _LIBCPP___MEMORY_UNIQUE_PTR_H |
| 12 | |
| 13 | #include <__config> |
| 14 | #include <__functional_base> |
| 15 | #include <__functional/hash.h> |
| 16 | #include <__functional/operations.h> |
| 17 | #include <__memory/allocator_traits.h> // __pointer |
| 18 | #include <__memory/compressed_pair.h> |
| 19 | #include <__utility/forward.h> |
| 20 | #include <cstddef> |
| 21 | #include <type_traits> |
| 22 | #include <utility> |
| 23 | |
| 24 | #if _LIBCPP_STD_VER14 <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) |
| 25 | # include <__memory/auto_ptr.h> |
| 26 | #endif |
| 27 | |
| 28 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 29 | #pragma GCC system_header |
| 30 | #endif |
| 31 | |
| 32 | _LIBCPP_PUSH_MACROSpush_macro("min") push_macro("max") |
| 33 | #include <__undef_macros> |
| 34 | |
| 35 | _LIBCPP_BEGIN_NAMESPACE_STDnamespace std { inline namespace __1 { |
| 36 | |
| 37 | template <class _Tp> |
| 38 | struct _LIBCPP_TEMPLATE_VIS__attribute__ ((__type_visibility__("default"))) default_delete { |
| 39 | static_assert(!is_function<_Tp>::value, |
| 40 | "default_delete cannot be instantiated for function types"); |
| 41 | #ifndef _LIBCPP_CXX03_LANG |
| 42 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) constexpr default_delete() _NOEXCEPTnoexcept = default; |
| 43 | #else |
| 44 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) default_delete() {} |
| 45 | #endif |
| 46 | template <class _Up> |
| 47 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 48 | default_delete(const default_delete<_Up>&, |
| 49 | typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = |
| 50 | 0) _NOEXCEPTnoexcept {} |
| 51 | |
| 52 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) void operator()(_Tp* __ptr) const _NOEXCEPTnoexcept { |
| 53 | static_assert(sizeof(_Tp) > 0, |
| 54 | "default_delete can not delete incomplete type"); |
| 55 | static_assert(!is_void<_Tp>::value, |
| 56 | "default_delete can not delete incomplete type"); |
| 57 | delete __ptr; |
| 58 | } |
| 59 | }; |
| 60 | |
| 61 | template <class _Tp> |
| 62 | struct _LIBCPP_TEMPLATE_VIS__attribute__ ((__type_visibility__("default"))) default_delete<_Tp[]> { |
| 63 | private: |
| 64 | template <class _Up> |
| 65 | struct _EnableIfConvertible |
| 66 | : enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value> {}; |
| 67 | |
| 68 | public: |
| 69 | #ifndef _LIBCPP_CXX03_LANG |
| 70 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) constexpr default_delete() _NOEXCEPTnoexcept = default; |
| 71 | #else |
| 72 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) default_delete() {} |
| 73 | #endif |
| 74 | |
| 75 | template <class _Up> |
| 76 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 77 | default_delete(const default_delete<_Up[]>&, |
| 78 | typename _EnableIfConvertible<_Up>::type* = 0) _NOEXCEPTnoexcept {} |
| 79 | |
| 80 | template <class _Up> |
| 81 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 82 | typename _EnableIfConvertible<_Up>::type |
| 83 | operator()(_Up* __ptr) const _NOEXCEPTnoexcept { |
| 84 | static_assert(sizeof(_Tp) > 0, |
| 85 | "default_delete can not delete incomplete type"); |
| 86 | static_assert(!is_void<_Tp>::value, |
| 87 | "default_delete can not delete void type"); |
| 88 | delete[] __ptr; |
| 89 | } |
| 90 | }; |
| 91 | |
| 92 | template <class _Deleter> |
| 93 | struct __unique_ptr_deleter_sfinae { |
| 94 | static_assert(!is_reference<_Deleter>::value, "incorrect specialization"); |
| 95 | typedef const _Deleter& __lval_ref_type; |
| 96 | typedef _Deleter&& __good_rval_ref_type; |
| 97 | typedef true_type __enable_rval_overload; |
| 98 | }; |
| 99 | |
| 100 | template <class _Deleter> |
| 101 | struct __unique_ptr_deleter_sfinae<_Deleter const&> { |
| 102 | typedef const _Deleter& __lval_ref_type; |
| 103 | typedef const _Deleter&& __bad_rval_ref_type; |
| 104 | typedef false_type __enable_rval_overload; |
| 105 | }; |
| 106 | |
| 107 | template <class _Deleter> |
| 108 | struct __unique_ptr_deleter_sfinae<_Deleter&> { |
| 109 | typedef _Deleter& __lval_ref_type; |
| 110 | typedef _Deleter&& __bad_rval_ref_type; |
| 111 | typedef false_type __enable_rval_overload; |
| 112 | }; |
| 113 | |
| 114 | #if defined(_LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI) |
| 115 | # define _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI __attribute__((trivial_abi)) |
| 116 | #else |
| 117 | # define _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI |
| 118 | #endif |
| 119 | |
| 120 | template <class _Tp, class _Dp = default_delete<_Tp> > |
| 121 | class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS__attribute__ ((__type_visibility__("default"))) unique_ptr { |
| 122 | public: |
| 123 | typedef _Tp element_type; |
| 124 | typedef _Dp deleter_type; |
| 125 | typedef _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) typename __pointer<_Tp, deleter_type>::type pointer; |
| 126 | |
| 127 | static_assert(!is_rvalue_reference<deleter_type>::value, |
| 128 | "the specified deleter type cannot be an rvalue reference"); |
| 129 | |
| 130 | private: |
| 131 | __compressed_pair<pointer, deleter_type> __ptr_; |
| 132 | |
| 133 | struct __nat { int __for_bool_; }; |
| 134 | |
| 135 | typedef _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE; |
| 136 | |
| 137 | template <bool _Dummy> |
| 138 | using _LValRefType _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 139 | typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type; |
| 140 | |
| 141 | template <bool _Dummy> |
| 142 | using _GoodRValRefType _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 143 | typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type; |
| 144 | |
| 145 | template <bool _Dummy> |
| 146 | using _BadRValRefType _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 147 | typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type; |
| 148 | |
| 149 | template <bool _Dummy, class _Deleter = typename __dependent_type< |
| 150 | __identity<deleter_type>, _Dummy>::type> |
| 151 | using _EnableIfDeleterDefaultConstructible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 152 | typename enable_if<is_default_constructible<_Deleter>::value && |
| 153 | !is_pointer<_Deleter>::value>::type; |
| 154 | |
| 155 | template <class _ArgType> |
| 156 | using _EnableIfDeleterConstructible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 157 | typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type; |
| 158 | |
| 159 | template <class _UPtr, class _Up> |
| 160 | using _EnableIfMoveConvertible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = typename enable_if< |
| 161 | is_convertible<typename _UPtr::pointer, pointer>::value && |
| 162 | !is_array<_Up>::value |
| 163 | >::type; |
| 164 | |
| 165 | template <class _UDel> |
| 166 | using _EnableIfDeleterConvertible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = typename enable_if< |
| 167 | (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) || |
| 168 | (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value) |
| 169 | >::type; |
| 170 | |
| 171 | template <class _UDel> |
| 172 | using _EnableIfDeleterAssignable = typename enable_if< |
| 173 | is_assignable<_Dp&, _UDel&&>::value |
| 174 | >::type; |
| 175 | |
| 176 | public: |
| 177 | template <bool _Dummy = true, |
| 178 | class = _EnableIfDeleterDefaultConstructible<_Dummy> > |
| 179 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 180 | _LIBCPP_CONSTEXPRconstexpr unique_ptr() _NOEXCEPTnoexcept : __ptr_(pointer(), __default_init_tag()) {} |
| 181 | |
| 182 | template <bool _Dummy = true, |
| 183 | class = _EnableIfDeleterDefaultConstructible<_Dummy> > |
| 184 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 185 | _LIBCPP_CONSTEXPRconstexpr unique_ptr(nullptr_t) _NOEXCEPTnoexcept : __ptr_(pointer(), __default_init_tag()) {} |
| 186 | |
| 187 | template <bool _Dummy = true, |
| 188 | class = _EnableIfDeleterDefaultConstructible<_Dummy> > |
| 189 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 190 | explicit unique_ptr(pointer __p) _NOEXCEPTnoexcept : __ptr_(__p, __default_init_tag()) {} |
| 191 | |
| 192 | template <bool _Dummy = true, |
| 193 | class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> > > |
| 194 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 195 | unique_ptr(pointer __p, _LValRefType<_Dummy> __d) _NOEXCEPTnoexcept |
| 196 | : __ptr_(__p, __d) {} |
| 197 | |
| 198 | template <bool _Dummy = true, |
| 199 | class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> > > |
| 200 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 201 | unique_ptr(pointer __p, _GoodRValRefType<_Dummy> __d) _NOEXCEPTnoexcept |
| 202 | : __ptr_(__p, _VSTDstd::__1::move(__d)) { |
| 203 | static_assert(!is_reference<deleter_type>::value, |
| 204 | "rvalue deleter bound to reference"); |
| 205 | } |
| 206 | |
| 207 | template <bool _Dummy = true, |
| 208 | class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> > > |
| 209 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 210 | unique_ptr(pointer __p, _BadRValRefType<_Dummy> __d) = delete; |
| 211 | |
| 212 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 213 | unique_ptr(unique_ptr&& __u) _NOEXCEPTnoexcept |
| 214 | : __ptr_(__u.release(), _VSTDstd::__1::forward<deleter_type>(__u.get_deleter())) { |
| 215 | } |
| 216 | |
| 217 | template <class _Up, class _Ep, |
| 218 | class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, |
| 219 | class = _EnableIfDeleterConvertible<_Ep> |
| 220 | > |
| 221 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 222 | unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPTnoexcept |
| 223 | : __ptr_(__u.release(), _VSTDstd::__1::forward<_Ep>(__u.get_deleter())) {} |
| 224 | |
| 225 | #if _LIBCPP_STD_VER14 <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) |
| 226 | template <class _Up> |
| 227 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 228 | unique_ptr(auto_ptr<_Up>&& __p, |
| 229 | typename enable_if<is_convertible<_Up*, _Tp*>::value && |
| 230 | is_same<_Dp, default_delete<_Tp> >::value, |
| 231 | __nat>::type = __nat()) _NOEXCEPTnoexcept |
| 232 | : __ptr_(__p.release(), __default_init_tag()) {} |
| 233 | #endif |
| 234 | |
| 235 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 236 | unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPTnoexcept { |
| 237 | reset(__u.release()); |
| 238 | __ptr_.second() = _VSTDstd::__1::forward<deleter_type>(__u.get_deleter()); |
| 239 | return *this; |
| 240 | } |
| 241 | |
| 242 | template <class _Up, class _Ep, |
| 243 | class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, |
| 244 | class = _EnableIfDeleterAssignable<_Ep> |
| 245 | > |
| 246 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 247 | unique_ptr& operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPTnoexcept { |
| 248 | reset(__u.release()); |
| 249 | __ptr_.second() = _VSTDstd::__1::forward<_Ep>(__u.get_deleter()); |
| 250 | return *this; |
| 251 | } |
| 252 | |
| 253 | #if _LIBCPP_STD_VER14 <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) |
| 254 | template <class _Up> |
| 255 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 256 | typename enable_if<is_convertible<_Up*, _Tp*>::value && |
| 257 | is_same<_Dp, default_delete<_Tp> >::value, |
| 258 | unique_ptr&>::type |
| 259 | operator=(auto_ptr<_Up> __p) { |
| 260 | reset(__p.release()); |
| 261 | return *this; |
| 262 | } |
| 263 | #endif |
| 264 | |
| 265 | #ifdef _LIBCPP_CXX03_LANG |
| 266 | unique_ptr(unique_ptr const&) = delete; |
| 267 | unique_ptr& operator=(unique_ptr const&) = delete; |
| 268 | #endif |
| 269 | |
| 270 | |
| 271 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 272 | ~unique_ptr() { reset(); } |
| 273 | |
| 274 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 275 | unique_ptr& operator=(nullptr_t) _NOEXCEPTnoexcept { |
| 276 | reset(); |
| 277 | return *this; |
| 278 | } |
| 279 | |
| 280 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 281 | typename add_lvalue_reference<_Tp>::type |
| 282 | operator*() const { |
| 283 | return *__ptr_.first(); |
| 284 | } |
| 285 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 286 | pointer operator->() const _NOEXCEPTnoexcept { |
| 287 | return __ptr_.first(); |
| 288 | } |
| 289 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 290 | pointer get() const _NOEXCEPTnoexcept { |
| 291 | return __ptr_.first(); |
| 292 | } |
| 293 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 294 | deleter_type& get_deleter() _NOEXCEPTnoexcept { |
| 295 | return __ptr_.second(); |
| 296 | } |
| 297 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 298 | const deleter_type& get_deleter() const _NOEXCEPTnoexcept { |
| 299 | return __ptr_.second(); |
| 300 | } |
| 301 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 302 | explicit operator bool() const _NOEXCEPTnoexcept { |
| 303 | return __ptr_.first() != nullptr; |
| 304 | } |
| 305 | |
| 306 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 307 | pointer release() _NOEXCEPTnoexcept { |
| 308 | pointer __t = __ptr_.first(); |
| 309 | __ptr_.first() = pointer(); |
| 310 | return __t; |
| 311 | } |
| 312 | |
| 313 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 314 | void reset(pointer __p = pointer()) _NOEXCEPTnoexcept { |
| 315 | pointer __tmp = __ptr_.first(); |
| 316 | __ptr_.first() = __p; |
| 317 | if (__tmp) |
| 318 | __ptr_.second()(__tmp); |
| 319 | } |
| 320 | |
| 321 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 322 | void swap(unique_ptr& __u) _NOEXCEPTnoexcept { |
| 323 | __ptr_.swap(__u.__ptr_); |
| 324 | } |
| 325 | }; |
| 326 | |
| 327 | |
| 328 | template <class _Tp, class _Dp> |
| 329 | class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS__attribute__ ((__type_visibility__("default"))) unique_ptr<_Tp[], _Dp> { |
| 330 | public: |
| 331 | typedef _Tp element_type; |
| 332 | typedef _Dp deleter_type; |
| 333 | typedef typename __pointer<_Tp, deleter_type>::type pointer; |
| 334 | |
| 335 | private: |
| 336 | __compressed_pair<pointer, deleter_type> __ptr_; |
| 337 | |
| 338 | template <class _From> |
| 339 | struct _CheckArrayPointerConversion : is_same<_From, pointer> {}; |
| 340 | |
| 341 | template <class _FromElem> |
| 342 | struct _CheckArrayPointerConversion<_FromElem*> |
| 343 | : integral_constant<bool, |
| 344 | is_same<_FromElem*, pointer>::value || |
| 345 | (is_same<pointer, element_type*>::value && |
| 346 | is_convertible<_FromElem(*)[], element_type(*)[]>::value) |
| 347 | > |
| 348 | {}; |
| 349 | |
| 350 | typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE; |
| 351 | |
| 352 | template <bool _Dummy> |
| 353 | using _LValRefType _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 354 | typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type; |
| 355 | |
| 356 | template <bool _Dummy> |
| 357 | using _GoodRValRefType _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 358 | typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type; |
| 359 | |
| 360 | template <bool _Dummy> |
| 361 | using _BadRValRefType _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 362 | typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type; |
| 363 | |
| 364 | template <bool _Dummy, class _Deleter = typename __dependent_type< |
| 365 | __identity<deleter_type>, _Dummy>::type> |
| 366 | using _EnableIfDeleterDefaultConstructible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 367 | typename enable_if<is_default_constructible<_Deleter>::value && |
| 368 | !is_pointer<_Deleter>::value>::type; |
| 369 | |
| 370 | template <class _ArgType> |
| 371 | using _EnableIfDeleterConstructible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = |
| 372 | typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type; |
| 373 | |
| 374 | template <class _Pp> |
| 375 | using _EnableIfPointerConvertible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = typename enable_if< |
| 376 | _CheckArrayPointerConversion<_Pp>::value |
| 377 | >::type; |
| 378 | |
| 379 | template <class _UPtr, class _Up, |
| 380 | class _ElemT = typename _UPtr::element_type> |
| 381 | using _EnableIfMoveConvertible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = typename enable_if< |
| 382 | is_array<_Up>::value && |
| 383 | is_same<pointer, element_type*>::value && |
| 384 | is_same<typename _UPtr::pointer, _ElemT*>::value && |
| 385 | is_convertible<_ElemT(*)[], element_type(*)[]>::value |
| 386 | >::type; |
| 387 | |
| 388 | template <class _UDel> |
| 389 | using _EnableIfDeleterConvertible _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = typename enable_if< |
| 390 | (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) || |
| 391 | (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value) |
| 392 | >::type; |
| 393 | |
| 394 | template <class _UDel> |
| 395 | using _EnableIfDeleterAssignable _LIBCPP_NODEBUG_TYPE__attribute__((nodebug)) = typename enable_if< |
| 396 | is_assignable<_Dp&, _UDel&&>::value |
| 397 | >::type; |
| 398 | |
| 399 | public: |
| 400 | template <bool _Dummy = true, |
| 401 | class = _EnableIfDeleterDefaultConstructible<_Dummy> > |
| 402 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 403 | _LIBCPP_CONSTEXPRconstexpr unique_ptr() _NOEXCEPTnoexcept : __ptr_(pointer(), __default_init_tag()) {} |
| 404 | |
| 405 | template <bool _Dummy = true, |
| 406 | class = _EnableIfDeleterDefaultConstructible<_Dummy> > |
| 407 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 408 | _LIBCPP_CONSTEXPRconstexpr unique_ptr(nullptr_t) _NOEXCEPTnoexcept : __ptr_(pointer(), __default_init_tag()) {} |
| 409 | |
| 410 | template <class _Pp, bool _Dummy = true, |
| 411 | class = _EnableIfDeleterDefaultConstructible<_Dummy>, |
| 412 | class = _EnableIfPointerConvertible<_Pp> > |
| 413 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 414 | explicit unique_ptr(_Pp __p) _NOEXCEPTnoexcept |
| 415 | : __ptr_(__p, __default_init_tag()) {} |
| 416 | |
| 417 | template <class _Pp, bool _Dummy = true, |
| 418 | class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> >, |
| 419 | class = _EnableIfPointerConvertible<_Pp> > |
| 420 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 421 | unique_ptr(_Pp __p, _LValRefType<_Dummy> __d) _NOEXCEPTnoexcept |
| 422 | : __ptr_(__p, __d) {} |
| 423 | |
| 424 | template <bool _Dummy = true, |
| 425 | class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> > > |
| 426 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 427 | unique_ptr(nullptr_t, _LValRefType<_Dummy> __d) _NOEXCEPTnoexcept |
| 428 | : __ptr_(nullptr, __d) {} |
| 429 | |
| 430 | template <class _Pp, bool _Dummy = true, |
| 431 | class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> >, |
| 432 | class = _EnableIfPointerConvertible<_Pp> > |
| 433 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 434 | unique_ptr(_Pp __p, _GoodRValRefType<_Dummy> __d) _NOEXCEPTnoexcept |
| 435 | : __ptr_(__p, _VSTDstd::__1::move(__d)) { |
| 436 | static_assert(!is_reference<deleter_type>::value, |
| 437 | "rvalue deleter bound to reference"); |
| 438 | } |
| 439 | |
| 440 | template <bool _Dummy = true, |
| 441 | class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> > > |
| 442 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 443 | unique_ptr(nullptr_t, _GoodRValRefType<_Dummy> __d) _NOEXCEPTnoexcept |
| 444 | : __ptr_(nullptr, _VSTDstd::__1::move(__d)) { |
| 445 | static_assert(!is_reference<deleter_type>::value, |
| 446 | "rvalue deleter bound to reference"); |
| 447 | } |
| 448 | |
| 449 | template <class _Pp, bool _Dummy = true, |
| 450 | class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> >, |
| 451 | class = _EnableIfPointerConvertible<_Pp> > |
| 452 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 453 | unique_ptr(_Pp __p, _BadRValRefType<_Dummy> __d) = delete; |
| 454 | |
| 455 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 456 | unique_ptr(unique_ptr&& __u) _NOEXCEPTnoexcept |
| 457 | : __ptr_(__u.release(), _VSTDstd::__1::forward<deleter_type>(__u.get_deleter())) { |
| 458 | } |
| 459 | |
| 460 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 461 | unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPTnoexcept { |
| 462 | reset(__u.release()); |
| 463 | __ptr_.second() = _VSTDstd::__1::forward<deleter_type>(__u.get_deleter()); |
| 464 | return *this; |
| 465 | } |
| 466 | |
| 467 | template <class _Up, class _Ep, |
| 468 | class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, |
| 469 | class = _EnableIfDeleterConvertible<_Ep> |
| 470 | > |
| 471 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 472 | unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPTnoexcept |
| 473 | : __ptr_(__u.release(), _VSTDstd::__1::forward<_Ep>(__u.get_deleter())) { |
| 474 | } |
| 475 | |
| 476 | template <class _Up, class _Ep, |
| 477 | class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, |
| 478 | class = _EnableIfDeleterAssignable<_Ep> |
| 479 | > |
| 480 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 481 | unique_ptr& |
| 482 | operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPTnoexcept { |
| 483 | reset(__u.release()); |
| 484 | __ptr_.second() = _VSTDstd::__1::forward<_Ep>(__u.get_deleter()); |
| 485 | return *this; |
| 486 | } |
| 487 | |
| 488 | #ifdef _LIBCPP_CXX03_LANG |
| 489 | unique_ptr(unique_ptr const&) = delete; |
| 490 | unique_ptr& operator=(unique_ptr const&) = delete; |
| 491 | #endif |
| 492 | |
| 493 | public: |
| 494 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 495 | ~unique_ptr() { reset(); } |
| 496 | |
| 497 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 498 | unique_ptr& operator=(nullptr_t) _NOEXCEPTnoexcept { |
| 499 | reset(); |
| 500 | return *this; |
| 501 | } |
| 502 | |
| 503 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 504 | typename add_lvalue_reference<_Tp>::type |
| 505 | operator[](size_t __i) const { |
| 506 | return __ptr_.first()[__i]; |
| 507 | } |
| 508 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 509 | pointer get() const _NOEXCEPTnoexcept { |
| 510 | return __ptr_.first(); |
| 511 | } |
| 512 | |
| 513 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 514 | deleter_type& get_deleter() _NOEXCEPTnoexcept { |
| 515 | return __ptr_.second(); |
| 516 | } |
| 517 | |
| 518 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 519 | const deleter_type& get_deleter() const _NOEXCEPTnoexcept { |
| 520 | return __ptr_.second(); |
| 521 | } |
| 522 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 523 | explicit operator bool() const _NOEXCEPTnoexcept { |
| 524 | return __ptr_.first() != nullptr; |
| 525 | } |
| 526 | |
| 527 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 528 | pointer release() _NOEXCEPTnoexcept { |
| 529 | pointer __t = __ptr_.first(); |
| 530 | __ptr_.first() = pointer(); |
| 531 | return __t; |
| 532 | } |
| 533 | |
| 534 | template <class _Pp> |
| 535 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 536 | typename enable_if< |
| 537 | _CheckArrayPointerConversion<_Pp>::value |
| 538 | >::type |
| 539 | reset(_Pp __p) _NOEXCEPTnoexcept { |
| 540 | pointer __tmp = __ptr_.first(); |
| 541 | __ptr_.first() = __p; |
| 542 | if (__tmp) |
| 543 | __ptr_.second()(__tmp); |
| 544 | } |
| 545 | |
| 546 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 547 | void reset(nullptr_t = nullptr) _NOEXCEPTnoexcept { |
| 548 | pointer __tmp = __ptr_.first(); |
| 549 | __ptr_.first() = nullptr; |
| 550 | if (__tmp) |
| 551 | __ptr_.second()(__tmp); |
| 552 | } |
| 553 | |
| 554 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 555 | void swap(unique_ptr& __u) _NOEXCEPTnoexcept { |
| 556 | __ptr_.swap(__u.__ptr_); |
| 557 | } |
| 558 | |
| 559 | }; |
| 560 | |
| 561 | template <class _Tp, class _Dp> |
| 562 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 563 | typename enable_if< |
| 564 | __is_swappable<_Dp>::value, |
| 565 | void |
| 566 | >::type |
| 567 | swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPTnoexcept {__x.swap(__y);} |
| 568 | |
| 569 | template <class _T1, class _D1, class _T2, class _D2> |
| 570 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 571 | bool |
| 572 | operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} |
| 573 | |
| 574 | template <class _T1, class _D1, class _T2, class _D2> |
| 575 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 576 | bool |
| 577 | operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} |
| 578 | |
| 579 | template <class _T1, class _D1, class _T2, class _D2> |
| 580 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 581 | bool |
| 582 | operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) |
| 583 | { |
| 584 | typedef typename unique_ptr<_T1, _D1>::pointer _P1; |
| 585 | typedef typename unique_ptr<_T2, _D2>::pointer _P2; |
| 586 | typedef typename common_type<_P1, _P2>::type _Vp; |
| 587 | return less<_Vp>()(__x.get(), __y.get()); |
| 588 | } |
| 589 | |
| 590 | template <class _T1, class _D1, class _T2, class _D2> |
| 591 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 592 | bool |
| 593 | operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} |
| 594 | |
| 595 | template <class _T1, class _D1, class _T2, class _D2> |
| 596 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 597 | bool |
| 598 | operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} |
| 599 | |
| 600 | template <class _T1, class _D1, class _T2, class _D2> |
| 601 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 602 | bool |
| 603 | operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} |
| 604 | |
| 605 | template <class _T1, class _D1> |
| 606 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 607 | bool |
| 608 | operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPTnoexcept |
| 609 | { |
| 610 | return !__x; |
| 611 | } |
| 612 | |
| 613 | template <class _T1, class _D1> |
| 614 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 615 | bool |
| 616 | operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPTnoexcept |
| 617 | { |
| 618 | return !__x; |
| 619 | } |
| 620 | |
| 621 | template <class _T1, class _D1> |
| 622 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 623 | bool |
| 624 | operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPTnoexcept |
| 625 | { |
| 626 | return static_cast<bool>(__x); |
| 627 | } |
| 628 | |
| 629 | template <class _T1, class _D1> |
| 630 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 631 | bool |
| 632 | operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPTnoexcept |
| 633 | { |
| 634 | return static_cast<bool>(__x); |
| 635 | } |
| 636 | |
| 637 | template <class _T1, class _D1> |
| 638 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 639 | bool |
| 640 | operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) |
| 641 | { |
| 642 | typedef typename unique_ptr<_T1, _D1>::pointer _P1; |
| 643 | return less<_P1>()(__x.get(), nullptr); |
| 644 | } |
| 645 | |
| 646 | template <class _T1, class _D1> |
| 647 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 648 | bool |
| 649 | operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) |
| 650 | { |
| 651 | typedef typename unique_ptr<_T1, _D1>::pointer _P1; |
| 652 | return less<_P1>()(nullptr, __x.get()); |
| 653 | } |
| 654 | |
| 655 | template <class _T1, class _D1> |
| 656 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 657 | bool |
| 658 | operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) |
| 659 | { |
| 660 | return nullptr < __x; |
| 661 | } |
| 662 | |
| 663 | template <class _T1, class _D1> |
| 664 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 665 | bool |
| 666 | operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) |
| 667 | { |
| 668 | return __x < nullptr; |
| 669 | } |
| 670 | |
| 671 | template <class _T1, class _D1> |
| 672 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 673 | bool |
| 674 | operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) |
| 675 | { |
| 676 | return !(nullptr < __x); |
| 677 | } |
| 678 | |
| 679 | template <class _T1, class _D1> |
| 680 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 681 | bool |
| 682 | operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) |
| 683 | { |
| 684 | return !(__x < nullptr); |
| 685 | } |
| 686 | |
| 687 | template <class _T1, class _D1> |
| 688 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 689 | bool |
| 690 | operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) |
| 691 | { |
| 692 | return !(__x < nullptr); |
| 693 | } |
| 694 | |
| 695 | template <class _T1, class _D1> |
| 696 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 697 | bool |
| 698 | operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) |
| 699 | { |
| 700 | return !(nullptr < __x); |
| 701 | } |
| 702 | |
| 703 | #if _LIBCPP_STD_VER14 > 11 |
| 704 | |
| 705 | template<class _Tp> |
| 706 | struct __unique_if |
| 707 | { |
| 708 | typedef unique_ptr<_Tp> __unique_single; |
| 709 | }; |
| 710 | |
| 711 | template<class _Tp> |
| 712 | struct __unique_if<_Tp[]> |
| 713 | { |
| 714 | typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; |
| 715 | }; |
| 716 | |
| 717 | template<class _Tp, size_t _Np> |
| 718 | struct __unique_if<_Tp[_Np]> |
| 719 | { |
| 720 | typedef void __unique_array_known_bound; |
| 721 | }; |
| 722 | |
| 723 | template<class _Tp, class... _Args> |
| 724 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 725 | typename __unique_if<_Tp>::__unique_single |
| 726 | make_unique(_Args&&... __args) |
| 727 | { |
| 728 | return unique_ptr<_Tp>(new _Tp(_VSTDstd::__1::forward<_Args>(__args)...)); |
| 729 | } |
| 730 | |
| 731 | template<class _Tp> |
| 732 | inline _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 733 | typename __unique_if<_Tp>::__unique_array_unknown_bound |
| 734 | make_unique(size_t __n) |
| 735 | { |
| 736 | typedef typename remove_extent<_Tp>::type _Up; |
| 737 | return unique_ptr<_Tp>(new _Up[__n]()); |
| 738 | } |
| 739 | |
| 740 | template<class _Tp, class... _Args> |
| 741 | typename __unique_if<_Tp>::__unique_array_known_bound |
| 742 | make_unique(_Args&&...) = delete; |
| 743 | |
| 744 | #endif // _LIBCPP_STD_VER > 11 |
| 745 | |
| 746 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS__attribute__ ((__type_visibility__("default"))) hash; |
| 747 | |
| 748 | template <class _Tp, class _Dp> |
| 749 | #ifdef _LIBCPP_CXX03_LANG |
| 750 | struct _LIBCPP_TEMPLATE_VIS__attribute__ ((__type_visibility__("default"))) hash<unique_ptr<_Tp, _Dp> > |
| 751 | #else |
| 752 | struct _LIBCPP_TEMPLATE_VIS__attribute__ ((__type_visibility__("default"))) hash<__enable_hash_helper< |
| 753 | unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer> > |
| 754 | #endif |
| 755 | { |
| 756 | #if _LIBCPP_STD_VER14 <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) |
| 757 | _LIBCPP_DEPRECATED_IN_CXX17 typedef unique_ptr<_Tp, _Dp> argument_type; |
| 758 | _LIBCPP_DEPRECATED_IN_CXX17 typedef size_t result_type; |
| 759 | #endif |
| 760 | |
| 761 | _LIBCPP_INLINE_VISIBILITY__attribute__ ((__visibility__("hidden"))) __attribute__ ((__exclude_from_explicit_instantiation__ )) |
| 762 | size_t operator()(const unique_ptr<_Tp, _Dp>& __ptr) const |
| 763 | { |
| 764 | typedef typename unique_ptr<_Tp, _Dp>::pointer pointer; |
| 765 | return hash<pointer>()(__ptr.get()); |
| 766 | } |
| 767 | }; |
| 768 | |
| 769 | _LIBCPP_END_NAMESPACE_STD} } |
| 770 | |
| 771 | _LIBCPP_POP_MACROSpop_macro("min") pop_macro("max") |
| 772 | |
| 773 | #endif // _LIBCPP___MEMORY_UNIQUE_PTR_H |