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-rw-r--r--src/llvmext/MachOObjectFile.cpp330
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diff --git a/src/llvmext/MachOObjectFile.cpp b/src/llvmext/MachOObjectFile.cpp
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index 4a003249..00000000
--- a/src/llvmext/MachOObjectFile.cpp
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-//===- 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 <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)
- : ObjectFile(Object),
- MachOObj(MOO),
- RegisteredStringTable(std::numeric_limits<uint32_t>::max()) {}
-
- 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 SymbolRef getSymbolNext(DataRefImpl Symb) const;
- virtual StringRef getSymbolName(DataRefImpl Symb) const;
- virtual uint64_t getSymbolAddress(DataRefImpl Symb) const;
- virtual uint64_t getSymbolSize(DataRefImpl Symb) const;
- virtual char getSymbolNMTypeChar(DataRefImpl Symb) const;
- virtual bool isSymbolInternal(DataRefImpl Symb) const;
-
- virtual SectionRef getSectionNext(DataRefImpl Sec) const;
- virtual StringRef getSectionName(DataRefImpl Sec) const;
- virtual uint64_t getSectionAddress(DataRefImpl Sec) const;
- virtual uint64_t getSectionSize(DataRefImpl Sec) const;
- virtual StringRef getSectionContents(DataRefImpl Sec) const;
- virtual bool isSectionText(DataRefImpl Sec) const;
-
-private:
- MachOObject *MachOObj;
- mutable uint32_t RegisteredStringTable;
-
- void moveToNextSection(DataRefImpl &DRI) const;
- void getSymbolTableEntry(DataRefImpl DRI,
- InMemoryStruct<macho::SymbolTableEntry> &Res) const;
- void moveToNextSymbol(DataRefImpl &DRI) const;
- void getSection(DataRefImpl DRI, InMemoryStruct<macho::Section> &Res) const;
-};
-
-ObjectFile *ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
- std::string Err;
- MachOObject *MachOObj = MachOObject::LoadFromBuffer(Buffer, &Err);
- if (!MachOObj)
- return NULL;
- return new MachOObjectFile(Buffer, MachOObj);
-}
-
-/*===-- 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);
-}
-
-
-SymbolRef MachOObjectFile::getSymbolNext(DataRefImpl DRI) const {
- DRI.d.b++;
- moveToNextSymbol(DRI);
- return SymbolRef(DRI, this);
-}
-
-StringRef MachOObjectFile::getSymbolName(DataRefImpl DRI) const {
- InMemoryStruct<macho::SymbolTableEntry> Entry;
- getSymbolTableEntry(DRI, Entry);
- return MachOObj->getStringAtIndex(Entry->StringIndex);
-}
-
-uint64_t MachOObjectFile::getSymbolAddress(DataRefImpl DRI) const {
- InMemoryStruct<macho::SymbolTableEntry> Entry;
- getSymbolTableEntry(DRI, Entry);
- return Entry->Value;
-}
-
-uint64_t MachOObjectFile::getSymbolSize(DataRefImpl DRI) const {
- return UnknownAddressOrSize;
-}
-
-char MachOObjectFile::getSymbolNMTypeChar(DataRefImpl DRI) const {
- InMemoryStruct<macho::SymbolTableEntry> Entry;
- getSymbolTableEntry(DRI, Entry);
-
- char Char;
- switch (Entry->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 (Entry->Flags & (macho::STF_External | macho::STF_PrivateExtern))
- Char = toupper(Char);
- return Char;
-}
-
-bool MachOObjectFile::isSymbolInternal(DataRefImpl DRI) const {
- InMemoryStruct<macho::SymbolTableEntry> Entry;
- getSymbolTableEntry(DRI, Entry);
- return Entry->Flags & macho::STF_StabsEntryMask;
-}
-
-ObjectFile::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));
-}
-
-ObjectFile::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;
- }
-}
-
-SectionRef MachOObjectFile::getSectionNext(DataRefImpl DRI) const {
- DRI.d.b++;
- moveToNextSection(DRI);
- return SectionRef(DRI, this);
-}
-
-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);
-}
-
-StringRef MachOObjectFile::getSectionName(DataRefImpl DRI) 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);
-
- static char Result[34];
- strcpy(Result, SLC->Name);
- strcat(Result, ",");
- strcat(Result, Sect->Name);
- return StringRef(Result);
-}
-
-uint64_t MachOObjectFile::getSectionAddress(DataRefImpl DRI) const {
- InMemoryStruct<macho::Section> Sect;
- getSection(DRI, Sect);
- return Sect->Address;
-}
-
-uint64_t MachOObjectFile::getSectionSize(DataRefImpl DRI) const {
- InMemoryStruct<macho::Section> Sect;
- getSection(DRI, Sect);
- return Sect->Size;
-}
-
-StringRef MachOObjectFile::getSectionContents(DataRefImpl DRI) const {
- InMemoryStruct<macho::Section> Sect;
- getSection(DRI, Sect);
- return MachOObj->getData(Sect->Offset, Sect->Size);
-}
-
-bool MachOObjectFile::isSectionText(DataRefImpl DRI) const {
- InMemoryStruct<macho::SegmentLoadCommand> SLC;
- LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
- MachOObj->ReadSegmentLoadCommand(LCI, SLC);
- return !strcmp(SLC->Name, "__TEXT");
-}
-
-ObjectFile::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 {
- DataRefImpl DRI;
- DRI.d.a = MachOObj->getHeader().NumLoadCommands;
- DRI.d.b = 0;
- return section_iterator(SectionRef(DRI, this));
-}
-
-/*===-- Miscellaneous -----------------------------------------------------===*/
-
-uint8_t MachOObjectFile::getBytesInAddress() const {
- return MachOObj->is64Bit() ? 8 : 4;
-}
-
-StringRef MachOObjectFile::getFileFormatName() const {
- if (!MachOObj->is64Bit()) {
- switch (MachOObj->getHeader().CPUType) {
- case 0x00000007:
- return "MACHO32-i386";
- case 0x01000007:
- return "MACHO32-x86-64";
- case 0x0000000c:
- return "MACHO32-arm";
- case 0x00000012:
- return "MACHO32-ppc";
- case 0x01000012:
- return "MACHO32-ppc64";
- }
- }
-
- switch (MachOObj->getHeader().CPUType) {
- case 0x00000007:
- return "MACHO64-i386";
- case 0x01000007:
- return "MACHO64-x86-64";
- case 0x0000000c:
- return "MACHO64-arm";
- case 0x00000012:
- return "MACHO64-ppc";
- case 0x01000012:
- return "MACHO64-ppc64";
- default:
- return "MACHO64-unknown";
- }
-}
-
-unsigned MachOObjectFile::getArch() const {
- switch (MachOObj->getHeader().CPUType) {
- case 0x00000007:
- return Triple::x86;
- case 0x01000007:
- return Triple::x86_64;
- case 0x0000000c:
- return Triple::arm;
- case 0x00000012:
- return Triple::ppc;
- case 0x01000012:
- return Triple::ppc64;
- default:
- return Triple::UnknownArch;
- }
-}
-
-} // end namespace llvm
-
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