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Change relocation API to be per section.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141376 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer
2011-10-07 18:15:25 +00:00
parent b76761351f
commit f1164a2487
8 changed files with 560 additions and 203 deletions
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82
lib/Object/MachOObjectFile.cpp
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@@ -39,8 +39,6 @@ public:
virtual symbol_iterator end_symbols() const;
virtual section_iterator begin_sections() const;
virtual section_iterator end_sections() const;
virtual relocation_iterator begin_relocations() const;
virtual relocation_iterator end_relocations() const;
virtual uint8_t getBytesInAddress() const;
virtual StringRef getFileFormatName() const;
@@ -67,6 +65,8 @@ protected:
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl DRI, DataRefImpl S,
bool &Result) const;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
virtual error_code getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const;
@@ -76,8 +76,13 @@ protected:
SymbolRef &Res) const;
virtual error_code getRelocationType(DataRefImpl Rel,
uint32_t &Res) const;
virtual error_code getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const;
virtual error_code getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
private:
MachOObject *MachOObj;
mutable uint32_t RegisteredStringTable;
@@ -96,6 +101,7 @@ private:
InMemoryStruct<macho::Section64> &Res) const;
void getRelocation(DataRefImpl Rel,
InMemoryStruct<macho::RelocationEntry> &Res) const;
std::size_t getSectionIndex(DataRefImpl Sec) const;
};
MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, MachOObject *MOO,
@@ -324,7 +330,7 @@ error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
}
ObjectFile::symbol_iterator MachOObjectFile::begin_symbols() const {
symbol_iterator MachOObjectFile::begin_symbols() const {
// DRI.d.a = segment number; DRI.d.b = symbol index.
DataRefImpl DRI;
DRI.d.a = DRI.d.b = 0;
@@ -332,7 +338,7 @@ ObjectFile::symbol_iterator MachOObjectFile::begin_symbols() const {
return symbol_iterator(SymbolRef(DRI, this));
}
ObjectFile::symbol_iterator MachOObjectFile::end_symbols() const {
symbol_iterator MachOObjectFile::end_symbols() const {
DataRefImpl DRI;
DRI.d.a = MachOObj->getHeader().NumLoadCommands;
DRI.d.b = 0;
@@ -380,6 +386,13 @@ MachOObjectFile::getSection(DataRefImpl DRI,
MachOObj->ReadSection(LCI, DRI.d.b, Res);
}
std::size_t MachOObjectFile::getSectionIndex(DataRefImpl Sec) const {
SectionList::const_iterator loc =
std::find(Sections.begin(), Sections.end(), Sec);
assert(loc != Sections.end() && "Sec is not a valid section!");
return std::distance(Sections.begin(), loc);
}
void
MachOObjectFile::getSection64(DataRefImpl DRI,
InMemoryStruct<macho::Section64> &Res) const {
@@ -511,14 +524,37 @@ error_code MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec,
return object_error::success;
}
ObjectFile::section_iterator MachOObjectFile::begin_sections() const {
relocation_iterator MachOObjectFile::getSectionRelBegin(DataRefImpl Sec) const {
DataRefImpl ret;
ret.d.a = 0;
ret.d.b = getSectionIndex(Sec);
return relocation_iterator(RelocationRef(ret, this));
}
relocation_iterator MachOObjectFile::getSectionRelEnd(DataRefImpl Sec) const {
uint32_t last_reloc;
if (is64BitLoadCommand(MachOObj, Sec)) {
InMemoryStruct<macho::Section64> Sect;
getSection64(Sec, Sect);
last_reloc = Sect->NumRelocationTableEntries;
} else {
InMemoryStruct<macho::Section> Sect;
getSection(Sec, Sect);
last_reloc = Sect->NumRelocationTableEntries;
}
DataRefImpl ret;
ret.d.a = last_reloc;
ret.d.b = getSectionIndex(Sec);
return relocation_iterator(RelocationRef(ret, this));
}
section_iterator MachOObjectFile::begin_sections() const {
DataRefImpl DRI;
DRI.d.a = DRI.d.b = 0;
moveToNextSection(DRI);
return section_iterator(SectionRef(DRI, this));
}
ObjectFile::section_iterator MachOObjectFile::end_sections() const {
section_iterator MachOObjectFile::end_sections() const {
DataRefImpl DRI;
DRI.d.a = MachOObj->getHeader().NumLoadCommands;
DRI.d.b = 0;
@@ -545,23 +581,6 @@ getRelocation(DataRefImpl Rel,
error_code MachOObjectFile::getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const {
++Rel.d.a;
while (Rel.d.b < Sections.size()) {
unsigned relocationCount;
if (MachOObj->is64Bit()) {
InMemoryStruct<macho::Section64> Sect;
getSection64(Sections[Rel.d.b], Sect);
relocationCount = Sect->NumRelocationTableEntries;
} else {
InMemoryStruct<macho::Section> Sect;
getSection(Sections[Rel.d.b], Sect);
relocationCount = Sect->NumRelocationTableEntries;
}
if (Rel.d.a < relocationCount)
break;
Rel.d.a = 0;
++Rel.d.b;
}
Res = RelocationRef(Rel, this);
return object_error::success;
}
@@ -610,6 +629,10 @@ error_code MachOObjectFile::getRelocationType(DataRefImpl Rel,
Res = RE->Word1;
return object_error::success;
}
error_code MachOObjectFile::getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
return object_error::success;
}
error_code MachOObjectFile::getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const {
InMemoryStruct<macho::RelocationEntry> RE;
@@ -631,16 +654,9 @@ error_code MachOObjectFile::getRelocationAdditionalInfo(DataRefImpl Rel,
}
return object_error::success;
}
ObjectFile::relocation_iterator MachOObjectFile::begin_relocations() const {
DataRefImpl ret;
ret.d.a = ret.d.b = 0;
return relocation_iterator(RelocationRef(ret, this));
}
ObjectFile::relocation_iterator MachOObjectFile::end_relocations() const {
DataRefImpl ret;
ret.d.a = 0;
ret.d.b = Sections.size();
return relocation_iterator(RelocationRef(ret, this));
error_code MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
return object_error::success;
}
/*===-- Miscellaneous -----------------------------------------------------===*/