mirror of
https://github.com/RPCSX/llvm.git
synced 2024-11-30 07:00:45 +00:00
4344b1ef9b
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141385 91177308-0d34-0410-b5e6-96231b3b80d8
714 lines
24 KiB
C++
714 lines
24 KiB
C++
//===- MachOObjectFile.cpp - Mach-O object file binding ---------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the MachOObjectFile class, which binds the MachOObject
|
|
// class to the generic ObjectFile wrapper.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/Object/MachOFormat.h"
|
|
#include "llvm/Object/MachOObject.h"
|
|
#include "llvm/Object/ObjectFile.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/MachO.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
|
|
#include <cctype>
|
|
#include <cstring>
|
|
#include <limits>
|
|
|
|
using namespace llvm;
|
|
using namespace object;
|
|
|
|
namespace llvm {
|
|
|
|
typedef MachOObject::LoadCommandInfo LoadCommandInfo;
|
|
|
|
class MachOObjectFile : public ObjectFile {
|
|
public:
|
|
MachOObjectFile(MemoryBuffer *Object, MachOObject *MOO, error_code &ec);
|
|
|
|
virtual symbol_iterator begin_symbols() const;
|
|
virtual symbol_iterator end_symbols() const;
|
|
virtual section_iterator begin_sections() const;
|
|
virtual section_iterator end_sections() const;
|
|
|
|
virtual uint8_t getBytesInAddress() const;
|
|
virtual StringRef getFileFormatName() const;
|
|
virtual unsigned getArch() const;
|
|
|
|
protected:
|
|
virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
|
|
virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
|
|
virtual error_code getSymbolOffset(DataRefImpl Symb, uint64_t &Res) const;
|
|
virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
|
|
virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
|
|
virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
|
|
virtual error_code isSymbolInternal(DataRefImpl Symb, bool &Res) const;
|
|
virtual error_code isSymbolGlobal(DataRefImpl Symb, bool &Res) const;
|
|
virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::SymbolType &Res) const;
|
|
|
|
virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
|
|
virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
|
|
virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
|
|
virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
|
|
virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
|
|
virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
|
|
virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
|
|
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;
|
|
virtual error_code getRelocationAddress(DataRefImpl Rel,
|
|
uint64_t &Res) const;
|
|
virtual error_code getRelocationSymbol(DataRefImpl Rel,
|
|
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;
|
|
typedef SmallVector<DataRefImpl, 1> SectionList;
|
|
SectionList Sections;
|
|
|
|
|
|
void moveToNextSection(DataRefImpl &DRI) const;
|
|
void getSymbolTableEntry(DataRefImpl DRI,
|
|
InMemoryStruct<macho::SymbolTableEntry> &Res) const;
|
|
void getSymbol64TableEntry(DataRefImpl DRI,
|
|
InMemoryStruct<macho::Symbol64TableEntry> &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;
|
|
void getRelocation(DataRefImpl Rel,
|
|
InMemoryStruct<macho::RelocationEntry> &Res) const;
|
|
std::size_t getSectionIndex(DataRefImpl Sec) const;
|
|
};
|
|
|
|
MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, MachOObject *MOO,
|
|
error_code &ec)
|
|
: ObjectFile(Binary::isMachO, Object, ec),
|
|
MachOObj(MOO),
|
|
RegisteredStringTable(std::numeric_limits<uint32_t>::max()) {
|
|
DataRefImpl DRI;
|
|
DRI.d.a = DRI.d.b = 0;
|
|
moveToNextSection(DRI);
|
|
uint32_t LoadCommandCount = MachOObj->getHeader().NumLoadCommands;
|
|
while (DRI.d.a < LoadCommandCount) {
|
|
Sections.push_back(DRI);
|
|
DRI.d.b++;
|
|
moveToNextSection(DRI);
|
|
}
|
|
}
|
|
|
|
|
|
ObjectFile *ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
|
|
error_code ec;
|
|
std::string Err;
|
|
MachOObject *MachOObj = MachOObject::LoadFromBuffer(Buffer, &Err);
|
|
if (!MachOObj)
|
|
return NULL;
|
|
return new MachOObjectFile(Buffer, MachOObj, ec);
|
|
}
|
|
|
|
/*===-- Symbols -----------------------------------------------------------===*/
|
|
|
|
void MachOObjectFile::moveToNextSymbol(DataRefImpl &DRI) const {
|
|
uint32_t LoadCommandCount = MachOObj->getHeader().NumLoadCommands;
|
|
while (DRI.d.a < LoadCommandCount) {
|
|
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
|
|
if (LCI.Command.Type == macho::LCT_Symtab) {
|
|
InMemoryStruct<macho::SymtabLoadCommand> SymtabLoadCmd;
|
|
MachOObj->ReadSymtabLoadCommand(LCI, SymtabLoadCmd);
|
|
if (DRI.d.b < SymtabLoadCmd->NumSymbolTableEntries)
|
|
return;
|
|
}
|
|
|
|
DRI.d.a++;
|
|
DRI.d.b = 0;
|
|
}
|
|
}
|
|
|
|
void MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI,
|
|
InMemoryStruct<macho::SymbolTableEntry> &Res) const {
|
|
InMemoryStruct<macho::SymtabLoadCommand> SymtabLoadCmd;
|
|
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
|
|
MachOObj->ReadSymtabLoadCommand(LCI, SymtabLoadCmd);
|
|
|
|
if (RegisteredStringTable != DRI.d.a) {
|
|
MachOObj->RegisterStringTable(*SymtabLoadCmd);
|
|
RegisteredStringTable = DRI.d.a;
|
|
}
|
|
|
|
MachOObj->ReadSymbolTableEntry(SymtabLoadCmd->SymbolTableOffset, DRI.d.b,
|
|
Res);
|
|
}
|
|
|
|
void MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI,
|
|
InMemoryStruct<macho::Symbol64TableEntry> &Res) const {
|
|
InMemoryStruct<macho::SymtabLoadCommand> SymtabLoadCmd;
|
|
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
|
|
MachOObj->ReadSymtabLoadCommand(LCI, SymtabLoadCmd);
|
|
|
|
if (RegisteredStringTable != DRI.d.a) {
|
|
MachOObj->RegisterStringTable(*SymtabLoadCmd);
|
|
RegisteredStringTable = DRI.d.a;
|
|
}
|
|
|
|
MachOObj->ReadSymbol64TableEntry(SymtabLoadCmd->SymbolTableOffset, DRI.d.b,
|
|
Res);
|
|
}
|
|
|
|
|
|
error_code MachOObjectFile::getSymbolNext(DataRefImpl DRI,
|
|
SymbolRef &Result) const {
|
|
DRI.d.b++;
|
|
moveToNextSymbol(DRI);
|
|
Result = SymbolRef(DRI, this);
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::getSymbolName(DataRefImpl DRI,
|
|
StringRef &Result) const {
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Symbol64TableEntry> Entry;
|
|
getSymbol64TableEntry(DRI, Entry);
|
|
Result = MachOObj->getStringAtIndex(Entry->StringIndex);
|
|
} else {
|
|
InMemoryStruct<macho::SymbolTableEntry> Entry;
|
|
getSymbolTableEntry(DRI, Entry);
|
|
Result = MachOObj->getStringAtIndex(Entry->StringIndex);
|
|
}
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::getSymbolOffset(DataRefImpl DRI,
|
|
uint64_t &Result) const {
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Symbol64TableEntry> Entry;
|
|
getSymbol64TableEntry(DRI, Entry);
|
|
Result = Entry->Value;
|
|
} else {
|
|
InMemoryStruct<macho::SymbolTableEntry> Entry;
|
|
getSymbolTableEntry(DRI, Entry);
|
|
Result = Entry->Value;
|
|
}
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::getSymbolAddress(DataRefImpl DRI,
|
|
uint64_t &Result) const {
|
|
uint64_t SymbolOffset;
|
|
uint8_t SectionIndex;
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Symbol64TableEntry> Entry;
|
|
getSymbol64TableEntry(DRI, Entry);
|
|
SymbolOffset = Entry->Value;
|
|
SectionIndex = Entry->SectionIndex;
|
|
} else {
|
|
InMemoryStruct<macho::SymbolTableEntry> Entry;
|
|
getSymbolTableEntry(DRI, Entry);
|
|
SymbolOffset = Entry->Value;
|
|
SectionIndex = Entry->SectionIndex;
|
|
}
|
|
getSectionAddress(Sections[SectionIndex], Result);
|
|
Result += SymbolOffset;
|
|
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::getSymbolSize(DataRefImpl DRI,
|
|
uint64_t &Result) const {
|
|
Result = UnknownAddressOrSize;
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::getSymbolNMTypeChar(DataRefImpl DRI,
|
|
char &Result) const {
|
|
uint8_t Type, Flags;
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Symbol64TableEntry> Entry;
|
|
getSymbol64TableEntry(DRI, Entry);
|
|
Type = Entry->Type;
|
|
Flags = Entry->Flags;
|
|
} else {
|
|
InMemoryStruct<macho::SymbolTableEntry> Entry;
|
|
getSymbolTableEntry(DRI, Entry);
|
|
Type = Entry->Type;
|
|
Flags = Entry->Flags;
|
|
}
|
|
|
|
char Char;
|
|
switch (Type & macho::STF_TypeMask) {
|
|
case macho::STT_Undefined:
|
|
Char = 'u';
|
|
break;
|
|
case macho::STT_Absolute:
|
|
case macho::STT_Section:
|
|
Char = 's';
|
|
break;
|
|
default:
|
|
Char = '?';
|
|
break;
|
|
}
|
|
|
|
if (Flags & (macho::STF_External | macho::STF_PrivateExtern))
|
|
Char = toupper(Char);
|
|
Result = Char;
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::isSymbolInternal(DataRefImpl DRI,
|
|
bool &Result) const {
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Symbol64TableEntry> Entry;
|
|
getSymbol64TableEntry(DRI, Entry);
|
|
Result = Entry->Flags & macho::STF_StabsEntryMask;
|
|
} else {
|
|
InMemoryStruct<macho::SymbolTableEntry> Entry;
|
|
getSymbolTableEntry(DRI, Entry);
|
|
Result = Entry->Flags & macho::STF_StabsEntryMask;
|
|
}
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::isSymbolGlobal(DataRefImpl Symb, bool &Res) const {
|
|
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Symbol64TableEntry> Entry;
|
|
getSymbol64TableEntry(Symb, Entry);
|
|
Res = Entry->Type & MachO::NlistMaskExternal;
|
|
} else {
|
|
InMemoryStruct<macho::SymbolTableEntry> Entry;
|
|
getSymbolTableEntry(Symb, Entry);
|
|
Res = Entry->Type & MachO::NlistMaskExternal;
|
|
}
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
|
|
SymbolRef::SymbolType &Res) const {
|
|
uint8_t n_type;
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Symbol64TableEntry> Entry;
|
|
getSymbol64TableEntry(Symb, Entry);
|
|
n_type = Entry->Type;
|
|
} else {
|
|
InMemoryStruct<macho::SymbolTableEntry> Entry;
|
|
getSymbolTableEntry(Symb, Entry);
|
|
n_type = Entry->Type;
|
|
}
|
|
Res = SymbolRef::ST_Other;
|
|
switch (n_type & MachO::NlistMaskType) {
|
|
case MachO::NListTypeUndefined :
|
|
Res = SymbolRef::ST_External;
|
|
break;
|
|
case MachO::NListTypeSection :
|
|
Res = SymbolRef::ST_Function;
|
|
break;
|
|
}
|
|
return object_error::success;
|
|
}
|
|
|
|
|
|
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;
|
|
moveToNextSymbol(DRI);
|
|
return symbol_iterator(SymbolRef(DRI, this));
|
|
}
|
|
|
|
symbol_iterator MachOObjectFile::end_symbols() const {
|
|
DataRefImpl DRI;
|
|
DRI.d.a = MachOObj->getHeader().NumLoadCommands;
|
|
DRI.d.b = 0;
|
|
return symbol_iterator(SymbolRef(DRI, this));
|
|
}
|
|
|
|
|
|
/*===-- Sections ----------------------------------------------------------===*/
|
|
|
|
void MachOObjectFile::moveToNextSection(DataRefImpl &DRI) const {
|
|
uint32_t LoadCommandCount = MachOObj->getHeader().NumLoadCommands;
|
|
while (DRI.d.a < LoadCommandCount) {
|
|
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
|
|
if (LCI.Command.Type == macho::LCT_Segment) {
|
|
InMemoryStruct<macho::SegmentLoadCommand> SegmentLoadCmd;
|
|
MachOObj->ReadSegmentLoadCommand(LCI, SegmentLoadCmd);
|
|
if (DRI.d.b < SegmentLoadCmd->NumSections)
|
|
return;
|
|
} else if (LCI.Command.Type == macho::LCT_Segment64) {
|
|
InMemoryStruct<macho::Segment64LoadCommand> Segment64LoadCmd;
|
|
MachOObj->ReadSegment64LoadCommand(LCI, Segment64LoadCmd);
|
|
if (DRI.d.b < Segment64LoadCmd->NumSections)
|
|
return;
|
|
}
|
|
|
|
DRI.d.a++;
|
|
DRI.d.b = 0;
|
|
}
|
|
}
|
|
|
|
error_code MachOObjectFile::getSectionNext(DataRefImpl DRI,
|
|
SectionRef &Result) const {
|
|
DRI.d.b++;
|
|
moveToNextSection(DRI);
|
|
Result = SectionRef(DRI, this);
|
|
return object_error::success;
|
|
}
|
|
|
|
void
|
|
MachOObjectFile::getSection(DataRefImpl DRI,
|
|
InMemoryStruct<macho::Section> &Res) const {
|
|
InMemoryStruct<macho::SegmentLoadCommand> SLC;
|
|
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
|
|
MachOObj->ReadSegmentLoadCommand(LCI, SLC);
|
|
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 {
|
|
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 {
|
|
// FIXME: thread safety.
|
|
static char result[34];
|
|
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, Sect->SegmentName);
|
|
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, Sect->SegmentName);
|
|
strcat(result, ",");
|
|
strcat(result, Sect->Name);
|
|
}
|
|
Result = StringRef(result);
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::getSectionAddress(DataRefImpl DRI,
|
|
uint64_t &Result) const {
|
|
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 {
|
|
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 {
|
|
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 {
|
|
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;
|
|
}
|
|
|
|
error_code MachOObjectFile::isSectionData(DataRefImpl DRI,
|
|
bool &Result) const {
|
|
// FIXME: Unimplemented.
|
|
Result = false;
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::isSectionBSS(DataRefImpl DRI,
|
|
bool &Result) const {
|
|
// FIXME: Unimplemented.
|
|
Result = false;
|
|
return object_error::success;
|
|
}
|
|
|
|
error_code MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec,
|
|
DataRefImpl Symb,
|
|
bool &Result) const {
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Symbol64TableEntry> Entry;
|
|
getSymbol64TableEntry(Symb, Entry);
|
|
Result = Entry->SectionIndex == 1 + Sec.d.a + Sec.d.b;
|
|
} else {
|
|
InMemoryStruct<macho::SymbolTableEntry> Entry;
|
|
getSymbolTableEntry(Symb, Entry);
|
|
Result = Entry->SectionIndex == 1 + Sec.d.a + Sec.d.b;
|
|
}
|
|
return object_error::success;
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
section_iterator MachOObjectFile::end_sections() const {
|
|
DataRefImpl DRI;
|
|
DRI.d.a = MachOObj->getHeader().NumLoadCommands;
|
|
DRI.d.b = 0;
|
|
return section_iterator(SectionRef(DRI, this));
|
|
}
|
|
|
|
/*===-- Relocations -------------------------------------------------------===*/
|
|
|
|
void MachOObjectFile::
|
|
getRelocation(DataRefImpl Rel,
|
|
InMemoryStruct<macho::RelocationEntry> &Res) const {
|
|
uint32_t relOffset;
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Section64> Sect;
|
|
getSection64(Sections[Rel.d.b], Sect);
|
|
relOffset = Sect->RelocationTableOffset;
|
|
} else {
|
|
InMemoryStruct<macho::Section> Sect;
|
|
getSection(Sections[Rel.d.b], Sect);
|
|
relOffset = Sect->RelocationTableOffset;
|
|
}
|
|
MachOObj->ReadRelocationEntry(relOffset, Rel.d.a, Res);
|
|
}
|
|
error_code MachOObjectFile::getRelocationNext(DataRefImpl Rel,
|
|
RelocationRef &Res) const {
|
|
++Rel.d.a;
|
|
Res = RelocationRef(Rel, this);
|
|
return object_error::success;
|
|
}
|
|
error_code MachOObjectFile::getRelocationAddress(DataRefImpl Rel,
|
|
uint64_t &Res) const {
|
|
const uint8_t* sectAddress = base();
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Section64> Sect;
|
|
getSection64(Sections[Rel.d.b], Sect);
|
|
sectAddress += Sect->Offset;
|
|
} else {
|
|
InMemoryStruct<macho::Section> Sect;
|
|
getSection(Sections[Rel.d.b], Sect);
|
|
sectAddress += Sect->Offset;
|
|
}
|
|
InMemoryStruct<macho::RelocationEntry> RE;
|
|
getRelocation(Rel, RE);
|
|
Res = reinterpret_cast<uintptr_t>(sectAddress + RE->Word0);
|
|
return object_error::success;
|
|
}
|
|
error_code MachOObjectFile::getRelocationSymbol(DataRefImpl Rel,
|
|
SymbolRef &Res) const {
|
|
InMemoryStruct<macho::RelocationEntry> RE;
|
|
getRelocation(Rel, RE);
|
|
uint32_t SymbolIdx = RE->Word1 & 0xffffff;
|
|
bool isExtern = (RE->Word1 >> 27) & 1;
|
|
|
|
DataRefImpl Sym;
|
|
Sym.d.a = Sym.d.b = 0;
|
|
moveToNextSymbol(Sym);
|
|
if (isExtern) {
|
|
for (unsigned i = 0; i < SymbolIdx; i++) {
|
|
Sym.d.b++;
|
|
moveToNextSymbol(Sym);
|
|
assert(Sym.d.a < MachOObj->getHeader().NumLoadCommands &&
|
|
"Relocation symbol index out of range!");
|
|
}
|
|
}
|
|
Res = SymbolRef(Sym, this);
|
|
return object_error::success;
|
|
}
|
|
error_code MachOObjectFile::getRelocationType(DataRefImpl Rel,
|
|
uint32_t &Res) const {
|
|
InMemoryStruct<macho::RelocationEntry> RE;
|
|
getRelocation(Rel, RE);
|
|
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;
|
|
getRelocation(Rel, RE);
|
|
bool isExtern = (RE->Word1 >> 27) & 1;
|
|
Res = 0;
|
|
if (!isExtern) {
|
|
const uint8_t* sectAddress = base();
|
|
if (MachOObj->is64Bit()) {
|
|
InMemoryStruct<macho::Section64> Sect;
|
|
getSection64(Sections[Rel.d.b], Sect);
|
|
sectAddress += Sect->Offset;
|
|
} else {
|
|
InMemoryStruct<macho::Section> Sect;
|
|
getSection(Sections[Rel.d.b], Sect);
|
|
sectAddress += Sect->Offset;
|
|
}
|
|
Res = reinterpret_cast<uintptr_t>(sectAddress);
|
|
}
|
|
return object_error::success;
|
|
}
|
|
error_code MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
|
|
SmallVectorImpl<char> &Result) const {
|
|
return object_error::success;
|
|
}
|
|
|
|
/*===-- Miscellaneous -----------------------------------------------------===*/
|
|
|
|
uint8_t MachOObjectFile::getBytesInAddress() const {
|
|
return MachOObj->is64Bit() ? 8 : 4;
|
|
}
|
|
|
|
StringRef MachOObjectFile::getFileFormatName() const {
|
|
if (!MachOObj->is64Bit()) {
|
|
switch (MachOObj->getHeader().CPUType) {
|
|
case llvm::MachO::CPUTypeI386:
|
|
return "Mach-O 32-bit i386";
|
|
case llvm::MachO::CPUTypeARM:
|
|
return "Mach-O arm";
|
|
case llvm::MachO::CPUTypePowerPC:
|
|
return "Mach-O 32-bit ppc";
|
|
default:
|
|
assert((MachOObj->getHeader().CPUType & llvm::MachO::CPUArchABI64) == 0 &&
|
|
"64-bit object file when we're not 64-bit?");
|
|
return "Mach-O 32-bit unknown";
|
|
}
|
|
}
|
|
|
|
switch (MachOObj->getHeader().CPUType) {
|
|
case llvm::MachO::CPUTypeX86_64:
|
|
return "Mach-O 64-bit x86-64";
|
|
case llvm::MachO::CPUTypePowerPC64:
|
|
return "Mach-O 64-bit ppc64";
|
|
default:
|
|
assert((MachOObj->getHeader().CPUType & llvm::MachO::CPUArchABI64) == 1 &&
|
|
"32-bit object file when we're 64-bit?");
|
|
return "Mach-O 64-bit unknown";
|
|
}
|
|
}
|
|
|
|
unsigned MachOObjectFile::getArch() const {
|
|
switch (MachOObj->getHeader().CPUType) {
|
|
case llvm::MachO::CPUTypeI386:
|
|
return Triple::x86;
|
|
case llvm::MachO::CPUTypeX86_64:
|
|
return Triple::x86_64;
|
|
case llvm::MachO::CPUTypeARM:
|
|
return Triple::arm;
|
|
case llvm::MachO::CPUTypePowerPC:
|
|
return Triple::ppc;
|
|
case llvm::MachO::CPUTypePowerPC64:
|
|
return Triple::ppc64;
|
|
default:
|
|
return Triple::UnknownArch;
|
|
}
|
|
}
|
|
|
|
} // end namespace llvm
|