lib/Object/ELFYAML.cpp

   1 //===- ELFYAML.cpp - ELF YAMLIO implementation ----------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file defines classes for handling the YAML representation of ELF.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/Object/ELFYAML.h"
  15 #include "llvm/Support/Casting.h"
  16
  17 namespace llvm {
  18
  19 ELFYAML::Section::~Section() {}
  20
  21 namespace yaml {
  22
  23 void
  24 ScalarEnumerationTraits<ELFYAML::ELF_ET>::enumeration(IO &IO,
  25                                                       ELFYAML::ELF_ET &Value) {
  26 #define ECase(X) IO.enumCase(Value, #X, ELF::X);
  27   ECase(ET_NONE)
  28   ECase(ET_REL)
  29   ECase(ET_EXEC)
  30   ECase(ET_DYN)
  31   ECase(ET_CORE)
  32 #undef ECase
  33 }
  34
  35 void
  36 ScalarEnumerationTraits<ELFYAML::ELF_EM>::enumeration(IO &IO,
  37                                                       ELFYAML::ELF_EM &Value) {
  38 #define ECase(X) IO.enumCase(Value, #X, ELF::X);
  39   ECase(EM_NONE)
  40   ECase(EM_M32)
  41   ECase(EM_SPARC)
  42   ECase(EM_386)
  43   ECase(EM_68K)
  44   ECase(EM_88K)
  45   ECase(EM_486)
  46   ECase(EM_860)
  47   ECase(EM_MIPS)
  48   ECase(EM_S370)
  49   ECase(EM_MIPS_RS3_LE)
  50   ECase(EM_PARISC)
  51   ECase(EM_VPP500)
  52   ECase(EM_SPARC32PLUS)
  53   ECase(EM_960)
  54   ECase(EM_PPC)
  55   ECase(EM_PPC64)
  56   ECase(EM_S390)
  57   ECase(EM_SPU)
  58   ECase(EM_V800)
  59   ECase(EM_FR20)
  60   ECase(EM_RH32)
  61   ECase(EM_RCE)
  62   ECase(EM_ARM)
  63   ECase(EM_ALPHA)
  64   ECase(EM_SH)
  65   ECase(EM_SPARCV9)
  66   ECase(EM_TRICORE)
  67   ECase(EM_ARC)
  68   ECase(EM_H8_300)
  69   ECase(EM_H8_300H)
  70   ECase(EM_H8S)
  71   ECase(EM_H8_500)
  72   ECase(EM_IA_64)
  73   ECase(EM_MIPS_X)
  74   ECase(EM_COLDFIRE)
  75   ECase(EM_68HC12)
  76   ECase(EM_MMA)
  77   ECase(EM_PCP)
  78   ECase(EM_NCPU)
  79   ECase(EM_NDR1)
  80   ECase(EM_STARCORE)
  81   ECase(EM_ME16)
  82   ECase(EM_ST100)
  83   ECase(EM_TINYJ)
  84   ECase(EM_X86_64)
  85   ECase(EM_PDSP)
  86   ECase(EM_PDP10)
  87   ECase(EM_PDP11)
  88   ECase(EM_FX66)
  89   ECase(EM_ST9PLUS)
  90   ECase(EM_ST7)
  91   ECase(EM_68HC16)
  92   ECase(EM_68HC11)
  93   ECase(EM_68HC08)
  94   ECase(EM_68HC05)
  95   ECase(EM_SVX)
  96   ECase(EM_ST19)
  97   ECase(EM_VAX)
  98   ECase(EM_CRIS)
  99   ECase(EM_JAVELIN)
 100   ECase(EM_FIREPATH)
 101   ECase(EM_ZSP)
 102   ECase(EM_MMIX)
 103   ECase(EM_HUANY)
 104   ECase(EM_PRISM)
 105   ECase(EM_AVR)
 106   ECase(EM_FR30)
 107   ECase(EM_D10V)
 108   ECase(EM_D30V)
 109   ECase(EM_V850)
 110   ECase(EM_M32R)
 111   ECase(EM_MN10300)
 112   ECase(EM_MN10200)
 113   ECase(EM_PJ)
 114   ECase(EM_OPENRISC)
 115   ECase(EM_ARC_COMPACT)
 116   ECase(EM_XTENSA)
 117   ECase(EM_VIDEOCORE)
 118   ECase(EM_TMM_GPP)
 119   ECase(EM_NS32K)
 120   ECase(EM_TPC)
 121   ECase(EM_SNP1K)
 122   ECase(EM_ST200)
 123   ECase(EM_IP2K)
 124   ECase(EM_MAX)
 125   ECase(EM_CR)
 126   ECase(EM_F2MC16)
 127   ECase(EM_MSP430)
 128   ECase(EM_BLACKFIN)
 129   ECase(EM_SE_C33)
 130   ECase(EM_SEP)
 131   ECase(EM_ARCA)
 132   ECase(EM_UNICORE)
 133   ECase(EM_EXCESS)
 134   ECase(EM_DXP)
 135   ECase(EM_ALTERA_NIOS2)
 136   ECase(EM_CRX)
 137   ECase(EM_XGATE)
 138   ECase(EM_C166)
 139   ECase(EM_M16C)
 140   ECase(EM_DSPIC30F)
 141   ECase(EM_CE)
 142   ECase(EM_M32C)
 143   ECase(EM_TSK3000)
 144   ECase(EM_RS08)
 145   ECase(EM_SHARC)
 146   ECase(EM_ECOG2)
 147   ECase(EM_SCORE7)
 148   ECase(EM_DSP24)
 149   ECase(EM_VIDEOCORE3)
 150   ECase(EM_LATTICEMICO32)
 151   ECase(EM_SE_C17)
 152   ECase(EM_TI_C6000)
 153   ECase(EM_TI_C2000)
 154   ECase(EM_TI_C5500)
 155   ECase(EM_MMDSP_PLUS)
 156   ECase(EM_CYPRESS_M8C)
 157   ECase(EM_R32C)
 158   ECase(EM_TRIMEDIA)
 159   ECase(EM_HEXAGON)
 160   ECase(EM_8051)
 161   ECase(EM_STXP7X)
 162   ECase(EM_NDS32)
 163   ECase(EM_ECOG1)
 164   ECase(EM_ECOG1X)
 165   ECase(EM_MAXQ30)
 166   ECase(EM_XIMO16)
 167   ECase(EM_MANIK)
 168   ECase(EM_CRAYNV2)
 169   ECase(EM_RX)
 170   ECase(EM_METAG)
 171   ECase(EM_MCST_ELBRUS)
 172   ECase(EM_ECOG16)
 173   ECase(EM_CR16)
 174   ECase(EM_ETPU)
 175   ECase(EM_SLE9X)
 176   ECase(EM_L10M)
 177   ECase(EM_K10M)
 178   ECase(EM_AARCH64)
 179   ECase(EM_AVR32)
 180   ECase(EM_STM8)
 181   ECase(EM_TILE64)
 182   ECase(EM_TILEPRO)
 183   ECase(EM_CUDA)
 184   ECase(EM_TILEGX)
 185   ECase(EM_CLOUDSHIELD)
 186   ECase(EM_COREA_1ST)
 187   ECase(EM_COREA_2ND)
 188   ECase(EM_ARC_COMPACT2)
 189   ECase(EM_OPEN8)
 190   ECase(EM_RL78)
 191   ECase(EM_VIDEOCORE5)
 192   ECase(EM_78KOR)
 193   ECase(EM_56800EX)
 194 #undef ECase
 195 }
 196
 197 void ScalarEnumerationTraits<ELFYAML::ELF_ELFCLASS>::enumeration(
 198     IO &IO, ELFYAML::ELF_ELFCLASS &Value) {
 199 #define ECase(X) IO.enumCase(Value, #X, ELF::X);
 200   // Since the semantics of ELFCLASSNONE is "invalid", just don't accept it
 201   // here.
 202   ECase(ELFCLASS32)
 203   ECase(ELFCLASS64)
 204 #undef ECase
 205 }
 206
 207 void ScalarEnumerationTraits<ELFYAML::ELF_ELFDATA>::enumeration(
 208     IO &IO, ELFYAML::ELF_ELFDATA &Value) {
 209 #define ECase(X) IO.enumCase(Value, #X, ELF::X);
 210   // Since the semantics of ELFDATANONE is "invalid", just don't accept it
 211   // here.
 212   ECase(ELFDATA2LSB)
 213   ECase(ELFDATA2MSB)
 214 #undef ECase
 215 }
 216
 217 void ScalarEnumerationTraits<ELFYAML::ELF_ELFOSABI>::enumeration(
 218     IO &IO, ELFYAML::ELF_ELFOSABI &Value) {
 219 #define ECase(X) IO.enumCase(Value, #X, ELF::X);
 220   ECase(ELFOSABI_NONE)
 221   ECase(ELFOSABI_HPUX)
 222   ECase(ELFOSABI_NETBSD)
 223   ECase(ELFOSABI_GNU)
 224   ECase(ELFOSABI_GNU)
 225   ECase(ELFOSABI_HURD)
 226   ECase(ELFOSABI_SOLARIS)
 227   ECase(ELFOSABI_AIX)
 228   ECase(ELFOSABI_IRIX)
 229   ECase(ELFOSABI_FREEBSD)
 230   ECase(ELFOSABI_TRU64)
 231   ECase(ELFOSABI_MODESTO)
 232   ECase(ELFOSABI_OPENBSD)
 233   ECase(ELFOSABI_OPENVMS)
 234   ECase(ELFOSABI_NSK)
 235   ECase(ELFOSABI_AROS)
 236   ECase(ELFOSABI_FENIXOS)
 237   ECase(ELFOSABI_C6000_ELFABI)
 238   ECase(ELFOSABI_C6000_LINUX)
 239   ECase(ELFOSABI_ARM)
 240   ECase(ELFOSABI_STANDALONE)
 241 #undef ECase
 242 }
 243
 244 void ScalarBitSetTraits<ELFYAML::ELF_EF>::bitset(IO &IO,
 245                                                  ELFYAML::ELF_EF &Value) {
 246   const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext());
 247   assert(Object && "The IO context is not initialized");
 248 #define BCase(X) IO.bitSetCase(Value, #X, ELF::X);
 249 #define BCaseMask(X, M) IO.maskedBitSetCase(Value, #X, ELF::X, ELF::M);
 250   switch (Object->Header.Machine) {
 251   case ELF::EM_ARM:
 252     BCase(EF_ARM_SOFT_FLOAT)
 253     BCase(EF_ARM_VFP_FLOAT)
 254     BCaseMask(EF_ARM_EABI_UNKNOWN, EF_ARM_EABIMASK)
 255     BCaseMask(EF_ARM_EABI_VER1, EF_ARM_EABIMASK)
 256     BCaseMask(EF_ARM_EABI_VER2, EF_ARM_EABIMASK)
 257     BCaseMask(EF_ARM_EABI_VER3, EF_ARM_EABIMASK)
 258     BCaseMask(EF_ARM_EABI_VER4, EF_ARM_EABIMASK)
 259     BCaseMask(EF_ARM_EABI_VER5, EF_ARM_EABIMASK)
 260     break;
 261   case ELF::EM_MIPS:
 262     BCase(EF_MIPS_NOREORDER)
 263     BCase(EF_MIPS_PIC)
 264     BCase(EF_MIPS_CPIC)
 265     BCase(EF_MIPS_ABI2)
 266     BCase(EF_MIPS_32BITMODE)
 267     BCase(EF_MIPS_NAN2008)
 268     BCase(EF_MIPS_ABI_O32)
 269     BCase(EF_MIPS_MICROMIPS)
 270     BCase(EF_MIPS_ARCH_ASE_M16)
 271     BCaseMask(EF_MIPS_ARCH_1, EF_MIPS_ARCH)
 272     BCaseMask(EF_MIPS_ARCH_2, EF_MIPS_ARCH)
 273     BCaseMask(EF_MIPS_ARCH_3, EF_MIPS_ARCH)
 274     BCaseMask(EF_MIPS_ARCH_4, EF_MIPS_ARCH)
 275     BCaseMask(EF_MIPS_ARCH_5, EF_MIPS_ARCH)
 276     BCaseMask(EF_MIPS_ARCH_32, EF_MIPS_ARCH)
 277     BCaseMask(EF_MIPS_ARCH_64, EF_MIPS_ARCH)
 278     BCaseMask(EF_MIPS_ARCH_32R2, EF_MIPS_ARCH)
 279     BCaseMask(EF_MIPS_ARCH_64R2, EF_MIPS_ARCH)
 280     BCaseMask(EF_MIPS_ARCH_32R6, EF_MIPS_ARCH)
 281     BCaseMask(EF_MIPS_ARCH_64R6, EF_MIPS_ARCH)
 282     break;
 283   case ELF::EM_HEXAGON:
 284     BCase(EF_HEXAGON_MACH_V2)
 285     BCase(EF_HEXAGON_MACH_V3)
 286     BCase(EF_HEXAGON_MACH_V4)
 287     BCase(EF_HEXAGON_MACH_V5)
 288     BCase(EF_HEXAGON_ISA_V2)
 289     BCase(EF_HEXAGON_ISA_V3)
 290     BCase(EF_HEXAGON_ISA_V4)
 291     BCase(EF_HEXAGON_ISA_V5)
 292     break;
 293   default:
 294     llvm_unreachable("Unsupported architecture");
 295   }
 296 #undef BCase
 297 #undef BCaseMask
 298 }
 299
 300 void ScalarEnumerationTraits<ELFYAML::ELF_SHT>::enumeration(
 301     IO &IO, ELFYAML::ELF_SHT &Value) {
 302   const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext());
 303   assert(Object && "The IO context is not initialized");
 304 #define ECase(X) IO.enumCase(Value, #X, ELF::X);
 305   ECase(SHT_NULL)
 306   ECase(SHT_PROGBITS)
 307   // No SHT_SYMTAB. Use the top-level `Symbols` key instead.
 308   // FIXME: Issue a diagnostic with this information.
 309   ECase(SHT_STRTAB)
 310   ECase(SHT_RELA)
 311   ECase(SHT_HASH)
 312   ECase(SHT_DYNAMIC)
 313   ECase(SHT_NOTE)
 314   ECase(SHT_NOBITS)
 315   ECase(SHT_REL)
 316   ECase(SHT_SHLIB)
 317   ECase(SHT_DYNSYM)
 318   ECase(SHT_INIT_ARRAY)
 319   ECase(SHT_FINI_ARRAY)
 320   ECase(SHT_PREINIT_ARRAY)
 321   ECase(SHT_GROUP)
 322   ECase(SHT_SYMTAB_SHNDX)
 323   ECase(SHT_LOOS)
 324   ECase(SHT_GNU_ATTRIBUTES)
 325   ECase(SHT_GNU_HASH)
 326   ECase(SHT_GNU_verdef)
 327   ECase(SHT_GNU_verneed)
 328   ECase(SHT_GNU_versym)
 329   ECase(SHT_HIOS)
 330   ECase(SHT_LOPROC)
 331   switch (Object->Header.Machine) {
 332   case ELF::EM_ARM:
 333     ECase(SHT_ARM_EXIDX)
 334     ECase(SHT_ARM_PREEMPTMAP)
 335     ECase(SHT_ARM_ATTRIBUTES)
 336     ECase(SHT_ARM_DEBUGOVERLAY)
 337     ECase(SHT_ARM_OVERLAYSECTION)
 338     break;
 339   case ELF::EM_HEXAGON:
 340     ECase(SHT_HEX_ORDERED)
 341     break;
 342   case ELF::EM_X86_64:
 343     ECase(SHT_X86_64_UNWIND)
 344     break;
 345   case ELF::EM_MIPS:
 346     ECase(SHT_MIPS_REGINFO)
 347     ECase(SHT_MIPS_OPTIONS)
 348     ECase(SHT_MIPS_ABIFLAGS)
 349     break;
 350   default:
 351     // Nothing to do.
 352     break;
 353   }
 354 #undef ECase
 355 }
 356
 357 void ScalarBitSetTraits<ELFYAML::ELF_SHF>::bitset(IO &IO,
 358                                                   ELFYAML::ELF_SHF &Value) {
 359 #define BCase(X) IO.bitSetCase(Value, #X, ELF::X);
 360   BCase(SHF_WRITE)
 361   BCase(SHF_ALLOC)
 362   BCase(SHF_EXCLUDE)
 363   BCase(SHF_EXECINSTR)
 364   BCase(SHF_MERGE)
 365   BCase(SHF_STRINGS)
 366   BCase(SHF_INFO_LINK)
 367   BCase(SHF_LINK_ORDER)
 368   BCase(SHF_OS_NONCONFORMING)
 369   BCase(SHF_GROUP)
 370   BCase(SHF_TLS)
 371 #undef BCase
 372 }
 373
 374 void ScalarEnumerationTraits<ELFYAML::ELF_STT>::enumeration(
 375     IO &IO, ELFYAML::ELF_STT &Value) {
 376 #define ECase(X) IO.enumCase(Value, #X, ELF::X);
 377   ECase(STT_NOTYPE)
 378   ECase(STT_OBJECT)
 379   ECase(STT_FUNC)
 380   ECase(STT_SECTION)
 381   ECase(STT_FILE)
 382   ECase(STT_COMMON)
 383   ECase(STT_TLS)
 384   ECase(STT_GNU_IFUNC)
 385 #undef ECase
 386 }
 387
 388 void ScalarEnumerationTraits<ELFYAML::ELF_STV>::enumeration(
 389     IO &IO, ELFYAML::ELF_STV &Value) {
 390 #define ECase(X) IO.enumCase(Value, #X, ELF::X);
 391   ECase(STV_DEFAULT)
 392   ECase(STV_INTERNAL)
 393   ECase(STV_HIDDEN)
 394   ECase(STV_PROTECTED)
 395 #undef ECase
 396 }
 397
 398 void ScalarBitSetTraits<ELFYAML::ELF_STO>::bitset(IO &IO,
 399                                                   ELFYAML::ELF_STO &Value) {
 400   const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext());
 401   assert(Object && "The IO context is not initialized");
 402 #define BCase(X) IO.bitSetCase(Value, #X, ELF::X);
 403   switch (Object->Header.Machine) {
 404   case ELF::EM_MIPS:
 405     BCase(STO_MIPS_OPTIONAL)
 406     BCase(STO_MIPS_PLT)
 407     BCase(STO_MIPS_PIC)
 408     BCase(STO_MIPS_MICROMIPS)
 409     break;
 410   default:
 411     break; // Nothing to do
 412   }
 413 #undef BCase
 414 #undef BCaseMask
 415 }
 416
 417 void ScalarEnumerationTraits<ELFYAML::ELF_REL>::enumeration(
 418     IO &IO, ELFYAML::ELF_REL &Value) {
 419   const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext());
 420   assert(Object && "The IO context is not initialized");
 421 #define ELF_RELOC(X, Y) IO.enumCase(Value, #X, ELF::X);
 422   switch (Object->Header.Machine) {
 423   case ELF::EM_X86_64:
 424 #include "llvm/Support/ELFRelocs/x86_64.def"
 425     break;
 426   case ELF::EM_MIPS:
 427 #include "llvm/Support/ELFRelocs/Mips.def"
 428     break;
 429   case ELF::EM_HEXAGON:
 430 #include "llvm/Support/ELFRelocs/Hexagon.def"
 431     break;
 432   case ELF::EM_386:
 433 #include "llvm/Support/ELFRelocs/i386.def"
 434     break;
 435   case ELF::EM_AARCH64:
 436 #include "llvm/Support/ELFRelocs/AArch64.def"
 437     break;
 438   case ELF::EM_ARM:
 439 #include "llvm/Support/ELFRelocs/ARM.def"
 440     break;
 441   default:
 442     llvm_unreachable("Unsupported architecture");
 443   }
 444 #undef ELF_RELOC
 445 }
 446
 447 void MappingTraits<ELFYAML::FileHeader>::mapping(IO &IO,
 448                                                  ELFYAML::FileHeader &FileHdr) {
 449   IO.mapRequired("Class", FileHdr.Class);
 450   IO.mapRequired("Data", FileHdr.Data);
 451   IO.mapOptional("OSABI", FileHdr.OSABI, ELFYAML::ELF_ELFOSABI(0));
 452   IO.mapRequired("Type", FileHdr.Type);
 453   IO.mapRequired("Machine", FileHdr.Machine);
 454   IO.mapOptional("Flags", FileHdr.Flags, ELFYAML::ELF_EF(0));
 455   IO.mapOptional("Entry", FileHdr.Entry, Hex64(0));
 456 }
 457
 458 namespace {
 459 struct NormalizedOther {
 460   NormalizedOther(IO &)
 461       : Visibility(ELFYAML::ELF_STV(0)), Other(ELFYAML::ELF_STO(0)) {}
 462   NormalizedOther(IO &, uint8_t Original)
 463       : Visibility(Original & 0x3), Other(Original & ~0x3) {}
 464
 465   uint8_t denormalize(IO &) { return Visibility | Other; }
 466
 467   ELFYAML::ELF_STV Visibility;
 468   ELFYAML::ELF_STO Other;
 469 };
 470 }
 471
 472 void MappingTraits<ELFYAML::Symbol>::mapping(IO &IO, ELFYAML::Symbol &Symbol) {
 473   IO.mapOptional("Name", Symbol.Name, StringRef());
 474   IO.mapOptional("Type", Symbol.Type, ELFYAML::ELF_STT(0));
 475   IO.mapOptional("Section", Symbol.Section, StringRef());
 476   IO.mapOptional("Value", Symbol.Value, Hex64(0));
 477   IO.mapOptional("Size", Symbol.Size, Hex64(0));
 478
 479   MappingNormalization<NormalizedOther, uint8_t> Keys(IO, Symbol.Other);
 480   IO.mapOptional("Visibility", Keys->Visibility, ELFYAML::ELF_STV(0));
 481   IO.mapOptional("Other", Keys->Other, ELFYAML::ELF_STO(0));
 482 }
 483
 484 void MappingTraits<ELFYAML::LocalGlobalWeakSymbols>::mapping(
 485     IO &IO, ELFYAML::LocalGlobalWeakSymbols &Symbols) {
 486   IO.mapOptional("Local", Symbols.Local);
 487   IO.mapOptional("Global", Symbols.Global);
 488   IO.mapOptional("Weak", Symbols.Weak);
 489 }
 490
 491 static void commonSectionMapping(IO &IO, ELFYAML::Section &Section) {
 492   IO.mapOptional("Name", Section.Name, StringRef());
 493   IO.mapRequired("Type", Section.Type);
 494   IO.mapOptional("Flags", Section.Flags, ELFYAML::ELF_SHF(0));
 495   IO.mapOptional("Address", Section.Address, Hex64(0));
 496   IO.mapOptional("Link", Section.Link, StringRef());
 497   IO.mapOptional("AddressAlign", Section.AddressAlign, Hex64(0));
 498 }
 499
 500 static void sectionMapping(IO &IO, ELFYAML::RawContentSection &Section) {
 501   commonSectionMapping(IO, Section);
 502   IO.mapOptional("Content", Section.Content);
 503   IO.mapOptional("Size", Section.Size, Hex64(Section.Content.binary_size()));
 504 }
 505
 506 static void sectionMapping(IO &IO, ELFYAML::RelocationSection &Section) {
 507   commonSectionMapping(IO, Section);
 508   IO.mapOptional("Info", Section.Info, StringRef());
 509   IO.mapOptional("Relocations", Section.Relocations);
 510 }
 511
 512 void MappingTraits<std::unique_ptr<ELFYAML::Section>>::mapping(
 513     IO &IO, std::unique_ptr<ELFYAML::Section> &Section) {
 514   ELFYAML::ELF_SHT sectionType;
 515   if (IO.outputting())
 516     sectionType = Section->Type;
 517   else
 518     IO.mapRequired("Type", sectionType);
 519
 520   switch (sectionType) {
 521   case ELF::SHT_REL:
 522   case ELF::SHT_RELA:
 523     if (!IO.outputting())
 524       Section.reset(new ELFYAML::RelocationSection());
 525     sectionMapping(IO, *cast<ELFYAML::RelocationSection>(Section.get()));
 526     break;
 527   default:
 528     if (!IO.outputting())
 529       Section.reset(new ELFYAML::RawContentSection());
 530     sectionMapping(IO, *cast<ELFYAML::RawContentSection>(Section.get()));
 531   }
 532 }
 533
 534 StringRef MappingTraits<std::unique_ptr<ELFYAML::Section>>::validate(
 535     IO &io, std::unique_ptr<ELFYAML::Section> &Section) {
 536   const auto *RawSection = dyn_cast<ELFYAML::RawContentSection>(Section.get());
 537   if (!RawSection || RawSection->Size >= RawSection->Content.binary_size())
 538     return StringRef();
 539   return "Section size must be greater or equal to the content size";
 540 }
 541
 542 void MappingTraits<ELFYAML::Relocation>::mapping(IO &IO,
 543                                                  ELFYAML::Relocation &Rel) {
 544   IO.mapRequired("Offset", Rel.Offset);
 545   IO.mapRequired("Symbol", Rel.Symbol);
 546   IO.mapRequired("Type", Rel.Type);
 547   IO.mapOptional("Addend", Rel.Addend);
 548 }
 549
 550 void MappingTraits<ELFYAML::Object>::mapping(IO &IO, ELFYAML::Object &Object) {
 551   assert(!IO.getContext() && "The IO context is initialized already");
 552   IO.setContext(&Object);
 553   IO.mapRequired("FileHeader", Object.Header);
 554   IO.mapOptional("Sections", Object.Sections);
 555   IO.mapOptional("Symbols", Object.Symbols);
 556   IO.setContext(nullptr);
 557 }
 558
 559 } // end namespace yaml
 560 } // end namespace llvm