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Add support for 64 bit objects to MachOObjectFile.

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- I don't see a better way than duplicating all the code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135229 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2011-07-15 00:14:48 +00:00
parent 82ba5b7c40
commit 7d145789c0
1 changed files with 77 additions and 21 deletions
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98
lib/Object/MachOObjectFile.cpp
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@ -70,6 +70,8 @@ private:
InMemoryStruct<macho::SymbolTableEntry> &Res) const;
void moveToNextSymbol(DataRefImpl &DRI) const;
void getSection(DataRefImpl DRI, InMemoryStruct<macho::Section> &Res) const;
void getSection64(DataRefImpl DRI,
InMemoryStruct<macho::Section64> &Res) const;
};
ObjectFile *ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
@ -234,51 +236,105 @@ MachOObjectFile::getSection(DataRefImpl DRI,
MachOObj->ReadSection(LCI, DRI.d.b, Res);
}
void
MachOObjectFile::getSection64(DataRefImpl DRI,
InMemoryStruct<macho::Section64> &Res) const {
InMemoryStruct<macho::Segment64LoadCommand> SLC;
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
MachOObj->ReadSegment64LoadCommand(LCI, SLC);
MachOObj->ReadSection64(LCI, DRI.d.b, Res);
}
static bool is64BitLoadCommand(const MachOObject *MachOObj, DataRefImpl DRI) {
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
if (LCI.Command.Type == macho::LCT_Segment64)
return true;
assert(LCI.Command.Type == macho::LCT_Segment && "Unexpected Type.");
return false;
}
error_code MachOObjectFile::getSectionName(DataRefImpl DRI,
StringRef &Result) const {
InMemoryStruct<macho::SegmentLoadCommand> SLC;
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
MachOObj->ReadSegmentLoadCommand(LCI, SLC);
InMemoryStruct<macho::Section> Sect;
MachOObj->ReadSection(LCI, DRI.d.b, Sect);
// FIXME: thread safety.
static char result[34];
strcpy(result, SLC->Name);
strcat(result, ",");
strcat(result, Sect->Name);
if (is64BitLoadCommand(MachOObj, DRI)) {
InMemoryStruct<macho::Segment64LoadCommand> SLC;
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
MachOObj->ReadSegment64LoadCommand(LCI, SLC);
InMemoryStruct<macho::Section64> Sect;
MachOObj->ReadSection64(LCI, DRI.d.b, Sect);
strcpy(result, SLC->Name);
strcat(result, ",");
strcat(result, Sect->Name);
} else {
InMemoryStruct<macho::SegmentLoadCommand> SLC;
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
MachOObj->ReadSegmentLoadCommand(LCI, SLC);
InMemoryStruct<macho::Section> Sect;
MachOObj->ReadSection(LCI, DRI.d.b, Sect);
strcpy(result, SLC->Name);
strcat(result, ",");
strcat(result, Sect->Name);
}
Result = StringRef(result);
return object_error::success;
}
error_code MachOObjectFile::getSectionAddress(DataRefImpl DRI,
uint64_t &Result) const {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = Sect->Address;
if (is64BitLoadCommand(MachOObj, DRI)) {
InMemoryStruct<macho::Section64> Sect;
getSection64(DRI, Sect);
Result = Sect->Address;
} else {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = Sect->Address;
}
return object_error::success;
}
error_code MachOObjectFile::getSectionSize(DataRefImpl DRI,
uint64_t &Result) const {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = Sect->Size;
if (is64BitLoadCommand(MachOObj, DRI)) {
InMemoryStruct<macho::Section64> Sect;
getSection64(DRI, Sect);
Result = Sect->Size;
} else {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = Sect->Size;
}
return object_error::success;
}
error_code MachOObjectFile::getSectionContents(DataRefImpl DRI,
StringRef &Result) const {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = MachOObj->getData(Sect->Offset, Sect->Size);
if (is64BitLoadCommand(MachOObj, DRI)) {
InMemoryStruct<macho::Section64> Sect;
getSection64(DRI, Sect);
Result = MachOObj->getData(Sect->Offset, Sect->Size);
} else {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = MachOObj->getData(Sect->Offset, Sect->Size);
}
return object_error::success;
}
error_code MachOObjectFile::isSectionText(DataRefImpl DRI,
bool &Result) const {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = !strcmp(Sect->Name, "__text");
if (is64BitLoadCommand(MachOObj, DRI)) {
InMemoryStruct<macho::Section64> Sect;
getSection64(DRI, Sect);
Result = !strcmp(Sect->Name, "__text");
} else {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = !strcmp(Sect->Name, "__text");
}
return object_error::success;
}