[llvm] r179051 - Template the MachO types over the word size.

Jim Grosbach grosbach at apple.com
Thu Apr 11 17:45:11 PDT 2013


ping? This wasn’t just an idle question. I really don’t like this change unless there’s a real need for it.


On Apr 8, 2013, at 2:58 PM, Jim Grosbach <grosbach at apple.com> wrote:

> Why do this? The resultant code is less readable to me, replacing an explicit “64” in the type name with a “true” that I have to go look at the template definition to find the meaning of.
> 
> -Jim
> 
> On Apr 8, 2013, at 1:45 PM, Rafael Espindola <rafael.espindola at gmail.com> wrote:
> 
>> Author: rafael
>> Date: Mon Apr  8 15:45:01 2013
>> New Revision: 179051
>> 
>> URL: http://llvm.org/viewvc/llvm-project?rev=179051&view=rev
>> Log:
>> Template the MachO types over the word size.
>> 
>> Modified:
>>    llvm/trunk/include/llvm/Object/MachO.h
>>    llvm/trunk/lib/Object/MachOObjectFile.cpp
>>    llvm/trunk/tools/llvm-readobj/MachODumper.cpp
>> 
>> Modified: llvm/trunk/include/llvm/Object/MachO.h
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Object/MachO.h?rev=179051&r1=179050&r2=179051&view=diff
>> ==============================================================================
>> --- llvm/trunk/include/llvm/Object/MachO.h (original)
>> +++ llvm/trunk/include/llvm/Object/MachO.h Mon Apr  8 15:45:01 2013
>> @@ -27,7 +27,11 @@ namespace llvm {
>> namespace object {
>> 
>> namespace MachOFormat {
>> -  struct Section {
>> +  template<bool is64Bits>
>> +  struct Section;
>> +
>> +  template<>
>> +  struct Section<false> {
>>     char Name[16];
>>     char SegmentName[16];
>>     support::ulittle32_t Address;
>> @@ -41,7 +45,8 @@ namespace MachOFormat {
>>     support::ulittle32_t Reserved2;
>>   };
>> 
>> -  struct Section64 {
>> +  template<>
>> +  struct Section<true> {
>>     char Name[16];
>>     char SegmentName[16];
>>     support::ulittle64_t Address;
>> @@ -61,7 +66,11 @@ namespace MachOFormat {
>>     support::ulittle32_t Word1;
>>   };
>> 
>> -  struct SymbolTableEntry {
>> +  template<bool is64Bits>
>> +  struct SymbolTableEntry;
>> +
>> +  template<>
>> +  struct SymbolTableEntry<false> {
>>     support::ulittle32_t StringIndex;
>>     uint8_t Type;
>>     uint8_t SectionIndex;
>> @@ -69,7 +78,8 @@ namespace MachOFormat {
>>     support::ulittle32_t Value;
>>   };
>> 
>> -  struct Symbol64TableEntry {
>> +  template<>
>> +  struct SymbolTableEntry<true> {
>>     support::ulittle32_t StringIndex;
>>     uint8_t Type;
>>     uint8_t SectionIndex;
>> @@ -91,7 +101,11 @@ namespace MachOFormat {
>>     support::ulittle32_t StringTableSize;
>>   };
>> 
>> -  struct SegmentLoadCommand {
>> +  template<bool is64Bits>
>> +  struct SegmentLoadCommand;
>> +
>> +  template<>
>> +  struct SegmentLoadCommand<false> {
>>     support::ulittle32_t Type;
>>     support::ulittle32_t Size;
>>     char Name[16];
>> @@ -105,7 +119,8 @@ namespace MachOFormat {
>>     support::ulittle32_t Flags;
>>   };
>> 
>> -  struct Segment64LoadCommand {
>> +  template<>
>> +  struct SegmentLoadCommand<true> {
>>     support::ulittle32_t Type;
>>     support::ulittle32_t Size;
>>     char Name[16];
>> @@ -165,11 +180,11 @@ public:
>>   ArrayRef<char> getSectionRawName(DataRefImpl Sec) const;
>>   ArrayRef<char>getSectionRawFinalSegmentName(DataRefImpl Sec) const;
>> 
>> -  const MachOFormat::Section64 *getSection64(DataRefImpl DRI) const;
>> -  const MachOFormat::Section *getSection(DataRefImpl DRI) const;
>> -  const MachOFormat::Symbol64TableEntry *
>> +  const MachOFormat::Section<true> *getSection64(DataRefImpl DRI) const;
>> +  const MachOFormat::Section<false> *getSection(DataRefImpl DRI) const;
>> +  const MachOFormat::SymbolTableEntry<true> *
>>     getSymbol64TableEntry(DataRefImpl DRI) const;
>> -  const MachOFormat::SymbolTableEntry *
>> +  const MachOFormat::SymbolTableEntry<false> *
>>     getSymbolTableEntry(DataRefImpl DRI) const;
>>   bool is64Bit() const;
>>   const MachOFormat::LoadCommand *getLoadCommandInfo(unsigned Index) const;
>> @@ -242,11 +257,11 @@ private:
>> 
>>   void moveToNextSection(DataRefImpl &DRI) const;
>> 
>> -  const MachOFormat::SymbolTableEntry *
>> +  const MachOFormat::SymbolTableEntry<false> *
>>   getSymbolTableEntry(DataRefImpl DRI,
>>                      const MachOFormat::SymtabLoadCommand *SymtabLoadCmd) const;
>> 
>> -  const MachOFormat::Symbol64TableEntry *
>> +  const MachOFormat::SymbolTableEntry<true> *
>>   getSymbol64TableEntry(DataRefImpl DRI,
>>                      const MachOFormat::SymtabLoadCommand *SymtabLoadCmd) const;
>> 
>> 
>> Modified: llvm/trunk/lib/Object/MachOObjectFile.cpp
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Object/MachOObjectFile.cpp?rev=179051&r1=179050&r2=179051&view=diff
>> ==============================================================================
>> --- llvm/trunk/lib/Object/MachOObjectFile.cpp (original)
>> +++ llvm/trunk/lib/Object/MachOObjectFile.cpp Mon Apr  8 15:45:01 2013
>> @@ -116,7 +116,7 @@ void MachOObjectFile::moveToNextSymbol(D
>>   }
>> }
>> 
>> -const MachOFormat::SymbolTableEntry *
>> +const MachOFormat::SymbolTableEntry<false> *
>> MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI) const {
>>   const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
>>   const MachOFormat::SymtabLoadCommand *SymtabLoadCmd =
>> @@ -125,18 +125,20 @@ MachOObjectFile::getSymbolTableEntry(Dat
>>   return getSymbolTableEntry(DRI, SymtabLoadCmd);
>> }
>> 
>> -const MachOFormat::SymbolTableEntry *
>> +const MachOFormat::SymbolTableEntry<false> *
>> MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI,
>>                     const MachOFormat::SymtabLoadCommand *SymtabLoadCmd) const {
>>   uint64_t SymbolTableOffset = SymtabLoadCmd->SymbolTableOffset;
>>   unsigned Index = DRI.d.b;
>>   uint64_t Offset = (SymbolTableOffset +
>> -                     Index * sizeof(macho::SymbolTableEntry));
>> -  StringRef Data = getData(Offset, sizeof(MachOFormat::SymbolTableEntry));
>> -  return reinterpret_cast<const MachOFormat::SymbolTableEntry*>(Data.data());
>> +                     Index * sizeof(MachOFormat::SymbolTableEntry<false>));
>> +  StringRef Data =
>> +    getData(Offset, sizeof(MachOFormat::SymbolTableEntry<false>));
>> +  return
>> +    reinterpret_cast<const MachOFormat::SymbolTableEntry<false>*>(Data.data());
>> }
>> 
>> -const MachOFormat::Symbol64TableEntry*
>> +const MachOFormat::SymbolTableEntry<true>*
>> MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI) const {
>>   const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
>>   const MachOFormat::SymtabLoadCommand *SymtabLoadCmd =
>> @@ -145,15 +147,16 @@ MachOObjectFile::getSymbol64TableEntry(D
>>   return getSymbol64TableEntry(DRI, SymtabLoadCmd);
>> }
>> 
>> -const MachOFormat::Symbol64TableEntry*
>> +const MachOFormat::SymbolTableEntry<true>*
>> MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI,
>>                     const MachOFormat::SymtabLoadCommand *SymtabLoadCmd) const {
>>   uint64_t SymbolTableOffset = SymtabLoadCmd->SymbolTableOffset;
>>   unsigned Index = DRI.d.b;
>>   uint64_t Offset = (SymbolTableOffset +
>> -                     Index * sizeof(macho::Symbol64TableEntry));
>> -  StringRef Data = getData(Offset, sizeof(MachOFormat::Symbol64TableEntry));
>> -  return reinterpret_cast<const MachOFormat::Symbol64TableEntry*>(Data.data());
>> +                     Index * sizeof(MachOFormat::SymbolTableEntry<true>));
>> +  StringRef Data = getData(Offset, sizeof(MachOFormat::SymbolTableEntry<true>));
>> +  return
>> +    reinterpret_cast<const MachOFormat::SymbolTableEntry<true>*>(Data.data());
>> }
>> 
>> error_code MachOObjectFile::getSymbolNext(DataRefImpl DRI,
>> @@ -175,11 +178,11 @@ error_code MachOObjectFile::getSymbolNam
>> 
>>   uint32_t StringIndex;
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry =
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>>       getSymbol64TableEntry(DRI, SymtabLoadCmd);
>>     StringIndex = Entry->StringIndex;
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry =
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>>       getSymbolTableEntry(DRI, SymtabLoadCmd);
>>     StringIndex = Entry->StringIndex;
>>   }
>> @@ -193,18 +196,20 @@ error_code MachOObjectFile::getSymbolNam
>> error_code MachOObjectFile::getSymbolFileOffset(DataRefImpl DRI,
>>                                                 uint64_t &Result) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      getSymbol64TableEntry(DRI);
>>     Result = Entry->Value;
>>     if (Entry->SectionIndex) {
>> -      const MachOFormat::Section64 *Section =
>> +      const MachOFormat::Section<true> *Section =
>>         getSection64(Sections[Entry->SectionIndex-1]);
>>       Result += Section->Offset - Section->Address;
>>     }
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      getSymbolTableEntry(DRI);
>>     Result = Entry->Value;
>>     if (Entry->SectionIndex) {
>> -      const MachOFormat::Section *Section =
>> +      const MachOFormat::Section<false> *Section =
>>         getSection(Sections[Entry->SectionIndex-1]);
>>       Result += Section->Offset - Section->Address;
>>     }
>> @@ -216,10 +221,12 @@ error_code MachOObjectFile::getSymbolFil
>> error_code MachOObjectFile::getSymbolAddress(DataRefImpl DRI,
>>                                              uint64_t &Result) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      getSymbol64TableEntry(DRI);
>>     Result = Entry->Value;
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      getSymbolTableEntry(DRI);
>>     Result = Entry->Value;
>>   }
>>   return object_error::success;
>> @@ -232,7 +239,8 @@ error_code MachOObjectFile::getSymbolSiz
>>   uint64_t EndOffset = 0;
>>   uint8_t SectionIndex;
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      getSymbol64TableEntry(DRI);
>>     BeginOffset = Entry->Value;
>>     SectionIndex = Entry->SectionIndex;
>>     if (!SectionIndex) {
>> @@ -259,7 +267,8 @@ error_code MachOObjectFile::getSymbolSiz
>>       DRI.d.b++;
>>     }
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      getSymbolTableEntry(DRI);
>>     BeginOffset = Entry->Value;
>>     SectionIndex = Entry->SectionIndex;
>>     if (!SectionIndex) {
>> @@ -300,11 +309,13 @@ error_code MachOObjectFile::getSymbolNMT
>>                                                 char &Result) const {
>>   uint8_t Type, Flags;
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      getSymbol64TableEntry(DRI);
>>     Type = Entry->Type;
>>     Flags = Entry->Flags;
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      getSymbolTableEntry(DRI);
>>     Type = Entry->Type;
>>     Flags = Entry->Flags;
>>   }
>> @@ -334,11 +345,13 @@ error_code MachOObjectFile::getSymbolFla
>>   uint16_t MachOFlags;
>>   uint8_t MachOType;
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      getSymbol64TableEntry(DRI);
>>     MachOFlags = Entry->Flags;
>>     MachOType = Entry->Type;
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      getSymbolTableEntry(DRI);
>>     MachOFlags = Entry->Flags;
>>     MachOType = Entry->Type;
>>   }
>> @@ -371,10 +384,12 @@ error_code MachOObjectFile::getSymbolSec
>>                                              section_iterator &Res) const {
>>   uint8_t index;
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(Symb);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      getSymbol64TableEntry(Symb);
>>     index = Entry->SectionIndex;
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      getSymbolTableEntry(Symb);
>>     index = Entry->SectionIndex;
>>   }
>> 
>> @@ -390,10 +405,12 @@ error_code MachOObjectFile::getSymbolTyp
>>                                           SymbolRef::Type &Res) const {
>>   uint8_t n_type;
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(Symb);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      getSymbol64TableEntry(Symb);
>>     n_type = Entry->Type;
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      getSymbolTableEntry(Symb);
>>     n_type = Entry->Type;
>>   }
>>   Res = SymbolRef::ST_Other;
>> @@ -465,14 +482,14 @@ void MachOObjectFile::moveToNextSection(
>>   while (DRI.d.a < LoadCommandCount) {
>>     const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
>>     if (Command->Type == macho::LCT_Segment) {
>> -      const MachOFormat::SegmentLoadCommand *SegmentLoadCmd =
>> -        reinterpret_cast<const MachOFormat::SegmentLoadCommand*>(Command);
>> +      const MachOFormat::SegmentLoadCommand<false> *SegmentLoadCmd =
>> +       reinterpret_cast<const MachOFormat::SegmentLoadCommand<false>*>(Command);
>>       if (DRI.d.b < SegmentLoadCmd->NumSections)
>>         return;
>>     } else if (Command->Type == macho::LCT_Segment64) {
>> -      const MachOFormat::Segment64LoadCommand *Segment64LoadCmd =
>> -        reinterpret_cast<const MachOFormat::Segment64LoadCommand*>(Command);
>> -      if (DRI.d.b < Segment64LoadCmd->NumSections)
>> +      const MachOFormat::SegmentLoadCommand<true> *SegmentLoadCmd =
>> +        reinterpret_cast<const MachOFormat::SegmentLoadCommand<true>*>(Command);
>> +      if (DRI.d.b < SegmentLoadCmd->NumSections)
>>         return;
>>     }
>> 
>> @@ -489,13 +506,14 @@ error_code MachOObjectFile::getSectionNe
>>   return object_error::success;
>> }
>> 
>> -const MachOFormat::Section *MachOObjectFile::getSection(DataRefImpl DRI) const {
>> +const MachOFormat::Section<false> *
>> +MachOObjectFile::getSection(DataRefImpl DRI) const {
>>   assert(!is64Bit());
>>   const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
>>   uintptr_t CommandAddr = reinterpret_cast<uintptr_t>(Command);
>>   uintptr_t SectionAddr = CommandAddr + sizeof(macho::SegmentLoadCommand) +
>> -    DRI.d.b * sizeof(MachOFormat::Section);
>> -  return reinterpret_cast<const MachOFormat::Section*>(SectionAddr);
>> +    DRI.d.b * sizeof(MachOFormat::Section<false>);
>> +  return reinterpret_cast<const MachOFormat::Section<false>*>(SectionAddr);
>> }
>> 
>> std::size_t MachOObjectFile::getSectionIndex(DataRefImpl Sec) const {
>> @@ -505,14 +523,14 @@ std::size_t MachOObjectFile::getSectionI
>>   return std::distance(Sections.begin(), loc);
>> }
>> 
>> -const MachOFormat::Section64 *
>> +const MachOFormat::Section<true> *
>> MachOObjectFile::getSection64(DataRefImpl DRI) const {
>>   assert(is64Bit());
>>   const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
>>   uintptr_t CommandAddr = reinterpret_cast<uintptr_t>(Command);
>>   uintptr_t SectionAddr = CommandAddr + sizeof(macho::Segment64LoadCommand) +
>> -    DRI.d.b * sizeof(MachOFormat::Section64);
>> -  return reinterpret_cast<const MachOFormat::Section64*>(SectionAddr);
>> +    DRI.d.b * sizeof(MachOFormat::Section<true>);
>> +  return reinterpret_cast<const MachOFormat::Section<true>*>(SectionAddr);
>> }
>> 
>> static StringRef parseSegmentOrSectionName(const char *P) {
>> @@ -525,10 +543,10 @@ static StringRef parseSegmentOrSectionNa
>> 
>> ArrayRef<char> MachOObjectFile::getSectionRawName(DataRefImpl DRI) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *sec = getSection64(DRI);
>> +    const MachOFormat::Section<true> *sec = getSection64(DRI);
>>     return ArrayRef<char>(sec->Name);
>>   } else {
>> -    const MachOFormat::Section *sec = getSection(DRI);
>> +    const MachOFormat::Section<false> *sec = getSection(DRI);
>>     return ArrayRef<char>(sec->Name);
>>   }
>> }
>> @@ -543,10 +561,10 @@ error_code MachOObjectFile::getSectionNa
>> ArrayRef<char>
>> MachOObjectFile::getSectionRawFinalSegmentName(DataRefImpl Sec) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *sec = getSection64(Sec);
>> +    const MachOFormat::Section<true> *sec = getSection64(Sec);
>>     return ArrayRef<char>(sec->SegmentName, 16);
>>   } else {
>> -    const MachOFormat::Section *sec = getSection(Sec);
>> +    const MachOFormat::Section<false> *sec = getSection(Sec);
>>     return ArrayRef<char>(sec->SegmentName);
>>   }
>> }
>> @@ -559,10 +577,10 @@ StringRef MachOObjectFile::getSectionFin
>> error_code MachOObjectFile::getSectionAddress(DataRefImpl DRI,
>>                                               uint64_t &Result) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(DRI);
>> +    const MachOFormat::Section<true> *Sect = getSection64(DRI);
>>     Result = Sect->Address;
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(DRI);
>> +    const MachOFormat::Section<false> *Sect = getSection(DRI);
>>     Result = Sect->Address;
>>   }
>>   return object_error::success;
>> @@ -571,10 +589,10 @@ error_code MachOObjectFile::getSectionAd
>> error_code MachOObjectFile::getSectionSize(DataRefImpl DRI,
>>                                            uint64_t &Result) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(DRI);
>> +    const MachOFormat::Section<true> *Sect = getSection64(DRI);
>>     Result = Sect->Size;
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(DRI);
>> +    const MachOFormat::Section<false> *Sect = getSection(DRI);
>>     Result = Sect->Size;
>>   }
>>   return object_error::success;
>> @@ -583,10 +601,10 @@ error_code MachOObjectFile::getSectionSi
>> error_code MachOObjectFile::getSectionContents(DataRefImpl DRI,
>>                                                StringRef &Result) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(DRI);
>> +    const MachOFormat::Section<true> *Sect = getSection64(DRI);
>>     Result = getData(Sect->Offset, Sect->Size);
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(DRI);
>> +    const MachOFormat::Section<false> *Sect = getSection(DRI);
>>     Result = getData(Sect->Offset, Sect->Size);
>>   }
>>   return object_error::success;
>> @@ -595,10 +613,10 @@ error_code MachOObjectFile::getSectionCo
>> error_code MachOObjectFile::getSectionAlignment(DataRefImpl DRI,
>>                                                 uint64_t &Result) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(DRI);
>> +    const MachOFormat::Section<true> *Sect = getSection64(DRI);
>>     Result = uint64_t(1) << Sect->Align;
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(DRI);
>> +    const MachOFormat::Section<false> *Sect = getSection(DRI);
>>     Result = uint64_t(1) << Sect->Align;
>>   }
>>   return object_error::success;
>> @@ -607,10 +625,10 @@ error_code MachOObjectFile::getSectionAl
>> error_code MachOObjectFile::isSectionText(DataRefImpl DRI,
>>                                           bool &Result) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(DRI);
>> +    const MachOFormat::Section<true> *Sect = getSection64(DRI);
>>     Result = Sect->Flags & macho::SF_PureInstructions;
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(DRI);
>> +    const MachOFormat::Section<false> *Sect = getSection(DRI);
>>     Result = Sect->Flags & macho::SF_PureInstructions;
>>   }
>>   return object_error::success;
>> @@ -647,12 +665,12 @@ error_code MachOObjectFile::isSectionVir
>> error_code MachOObjectFile::isSectionZeroInit(DataRefImpl DRI,
>>                                               bool &Result) const {
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(DRI);
>> +    const MachOFormat::Section<true> *Sect = getSection64(DRI);
>>     unsigned SectionType = Sect->Flags & MachO::SectionFlagMaskSectionType;
>>     Result = (SectionType == MachO::SectionTypeZeroFill ||
>>               SectionType == MachO::SectionTypeZeroFillLarge);
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(DRI);
>> +    const MachOFormat::Section<false> *Sect = getSection(DRI);
>>     unsigned SectionType = Sect->Flags & MachO::SectionFlagMaskSectionType;
>>     Result = (SectionType == MachO::SectionTypeZeroFill ||
>>               SectionType == MachO::SectionTypeZeroFillLarge);
>> @@ -688,11 +706,13 @@ error_code MachOObjectFile::sectionConta
>>   SectEnd += SectBegin;
>> 
>>   if (is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(Symb);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      getSymbol64TableEntry(Symb);
>>     uint64_t SymAddr= Entry->Value;
>>     Result = (SymAddr >= SectBegin) && (SymAddr < SectEnd);
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      getSymbolTableEntry(Symb);
>>     uint64_t SymAddr= Entry->Value;
>>     Result = (SymAddr >= SectBegin) && (SymAddr < SectEnd);
>>   }
>> @@ -705,13 +725,14 @@ relocation_iterator MachOObjectFile::get
>>   ret.d.b = getSectionIndex(Sec);
>>   return relocation_iterator(RelocationRef(ret, this));
>> }
>> +
>> relocation_iterator MachOObjectFile::getSectionRelEnd(DataRefImpl Sec) const {
>>   uint32_t last_reloc;
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(Sec);
>> +    const MachOFormat::Section<true> *Sect = getSection64(Sec);
>>     last_reloc = Sect->NumRelocationTableEntries;
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(Sec);
>> +    const MachOFormat::Section<false> *Sect = getSection(Sec);
>>     last_reloc = Sect->NumRelocationTableEntries;
>>   }
>>   DataRefImpl ret;
>> @@ -738,10 +759,10 @@ const MachOFormat::RelocationEntry *
>> MachOObjectFile::getRelocation(DataRefImpl Rel) const {
>>   uint32_t relOffset;
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(Sections[Rel.d.b]);
>> +    const MachOFormat::Section<true> *Sect = getSection64(Sections[Rel.d.b]);
>>     relOffset = Sect->RelocationTableOffset;
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(Sections[Rel.d.b]);
>> +    const MachOFormat::Section<false> *Sect = getSection(Sections[Rel.d.b]);
>>     relOffset = Sect->RelocationTableOffset;
>>   }
>>   uint64_t Offset = relOffset + Rel.d.a * sizeof(MachOFormat::RelocationEntry);
>> @@ -759,10 +780,10 @@ error_code MachOObjectFile::getRelocatio
>>                                                  uint64_t &Res) const {
>>   const uint8_t* sectAddress = 0;
>>   if (is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = getSection64(Sections[Rel.d.b]);
>> +    const MachOFormat::Section<true> *Sect = getSection64(Sections[Rel.d.b]);
>>     sectAddress += Sect->Address;
>>   } else {
>> -    const MachOFormat::Section *Sect = getSection(Sections[Rel.d.b]);
>> +    const MachOFormat::Section<false> *Sect = getSection(Sections[Rel.d.b]);
>>     sectAddress += Sect->Address;
>>   }
>>   const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
>> @@ -926,10 +947,10 @@ error_code MachOObjectFile::getRelocatio
>>   if (!isExtern) {
>>     const uint8_t* sectAddress = base();
>>     if (is64Bit()) {
>> -      const MachOFormat::Section64 *Sect = getSection64(Sections[Rel.d.b]);
>> +      const MachOFormat::Section<true> *Sect = getSection64(Sections[Rel.d.b]);
>>       sectAddress += Sect->Offset;
>>     } else {
>> -      const MachOFormat::Section *Sect = getSection(Sections[Rel.d.b]);
>> +      const MachOFormat::Section<false> *Sect = getSection(Sections[Rel.d.b]);
>>       sectAddress += Sect->Offset;
>>     }
>>     Res = reinterpret_cast<uintptr_t>(sectAddress);
>> 
>> Modified: llvm/trunk/tools/llvm-readobj/MachODumper.cpp
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-readobj/MachODumper.cpp?rev=179051&r1=179050&r2=179051&view=diff
>> ==============================================================================
>> --- llvm/trunk/tools/llvm-readobj/MachODumper.cpp (original)
>> +++ llvm/trunk/tools/llvm-readobj/MachODumper.cpp Mon Apr  8 15:45:01 2013
>> @@ -161,7 +161,7 @@ static void getSection(const MachOObject
>>                        DataRefImpl DRI,
>>                        MachOSection &Section) {
>>   if (Obj->is64Bit()) {
>> -    const MachOFormat::Section64 *Sect = Obj->getSection64(DRI);
>> +    const MachOFormat::Section<true> *Sect = Obj->getSection64(DRI);
>> 
>>     Section.Address     = Sect->Address;
>>     Section.Size        = Sect->Size;
>> @@ -173,7 +173,7 @@ static void getSection(const MachOObject
>>     Section.Reserved1   = Sect->Reserved1;
>>     Section.Reserved2   = Sect->Reserved2;
>>   } else {
>> -    const MachOFormat::Section *Sect = Obj->getSection(DRI);
>> +    const MachOFormat::Section<false> *Sect = Obj->getSection(DRI);
>> 
>>     Section.Address     = Sect->Address;
>>     Section.Size        = Sect->Size;
>> @@ -191,15 +191,16 @@ static void getSymbol(const MachOObjectF
>>                       DataRefImpl DRI,
>>                       MachOSymbol &Symbol) {
>>   if (Obj->is64Bit()) {
>> -    const MachOFormat::Symbol64TableEntry *Entry =
>> -      Obj->getSymbol64TableEntry( DRI);
>> +    const MachOFormat::SymbolTableEntry<true> *Entry =
>> +      Obj->getSymbol64TableEntry(DRI);
>>     Symbol.StringIndex  = Entry->StringIndex;
>>     Symbol.Type         = Entry->Type;
>>     Symbol.SectionIndex = Entry->SectionIndex;
>>     Symbol.Flags        = Entry->Flags;
>>     Symbol.Value        = Entry->Value;
>>   } else {
>> -    const MachOFormat::SymbolTableEntry *Entry = Obj->getSymbolTableEntry(DRI);
>> +    const MachOFormat::SymbolTableEntry<false> *Entry =
>> +      Obj->getSymbolTableEntry(DRI);
>>     Symbol.StringIndex  = Entry->StringIndex;
>>     Symbol.Type         = Entry->Type;
>>     Symbol.SectionIndex = Entry->SectionIndex;
>> 
>> 
>> _______________________________________________
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>> llvm-commits at cs.uiuc.edu
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> 
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