2011-10-11 17:32:27 +00:00
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//===- MachO.h - MachO object file implementation ---------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares the MachOObjectFile class, which binds the MachOObject
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// class to the generic ObjectFile wrapper.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OBJECT_MACHO_H
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#define LLVM_OBJECT_MACHO_H
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2013-04-05 15:15:22 +00:00
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#include "llvm/ADT/ArrayRef.h"
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2012-12-03 17:02:12 +00:00
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#include "llvm/ADT/SmallVector.h"
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2013-04-09 14:49:08 +00:00
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#include "llvm/ADT/Triple.h"
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2013-04-10 01:58:26 +00:00
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#include "llvm/Object/MachOFormat.h"
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2012-12-03 17:02:12 +00:00
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#include "llvm/Object/ObjectFile.h"
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2013-04-05 18:45:28 +00:00
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#include "llvm/Support/Endian.h"
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2011-10-11 17:32:27 +00:00
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#include "llvm/Support/MachO.h"
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2011-10-26 20:42:54 +00:00
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#include "llvm/Support/raw_ostream.h"
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2011-10-11 17:32:27 +00:00
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namespace llvm {
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namespace object {
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2013-04-10 03:48:25 +00:00
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using support::endianness;
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template<endianness E, bool B>
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struct MachOType {
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static const endianness TargetEndianness = E;
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static const bool Is64Bits = B;
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};
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template<endianness TargetEndianness>
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struct MachODataTypeTypedefHelperCommon {
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typedef support::detail::packed_endian_specific_integral
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<uint16_t, TargetEndianness, support::unaligned> MachOInt16;
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typedef support::detail::packed_endian_specific_integral
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<uint32_t, TargetEndianness, support::unaligned> MachOInt32;
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typedef support::detail::packed_endian_specific_integral
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<uint64_t, TargetEndianness, support::unaligned> MachOInt64;
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};
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#define LLVM_MACHOB_IMPORT_TYPES(E) \
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typedef typename MachODataTypeTypedefHelperCommon<E>::MachOInt16 MachOInt16; \
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typedef typename MachODataTypeTypedefHelperCommon<E>::MachOInt32 MachOInt32; \
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typedef typename MachODataTypeTypedefHelperCommon<E>::MachOInt64 MachOInt64;
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template<class MachOT>
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struct MachODataTypeTypedefHelper;
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2013-04-10 15:18:39 +00:00
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template<endianness TargetEndianness>
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struct MachODataTypeTypedefHelper<MachOType<TargetEndianness, false> > {
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2013-04-10 03:48:25 +00:00
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typedef MachODataTypeTypedefHelperCommon<TargetEndianness> Base;
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typedef typename Base::MachOInt32 MachOIntPtr;
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};
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2013-04-10 15:18:39 +00:00
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template<endianness TargetEndianness>
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struct MachODataTypeTypedefHelper<MachOType<TargetEndianness, true> > {
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2013-04-10 03:48:25 +00:00
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typedef MachODataTypeTypedefHelperCommon<TargetEndianness> Base;
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typedef typename Base::MachOInt64 MachOIntPtr;
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};
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#define LLVM_MACHO_IMPORT_TYPES(MachOT, E, B) \
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LLVM_MACHOB_IMPORT_TYPES(E) \
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typedef typename \
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MachODataTypeTypedefHelper <MachOT<E, B> >::MachOIntPtr MachOIntPtr;
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2013-04-05 18:45:28 +00:00
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namespace MachOFormat {
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2013-04-08 23:57:13 +00:00
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struct SectionBase {
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char Name[16];
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char SegmentName[16];
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};
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2013-04-10 03:48:25 +00:00
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template<class MachOT>
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2013-04-08 20:45:01 +00:00
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struct Section;
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2013-04-10 15:18:39 +00:00
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template<endianness TargetEndianness>
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struct Section<MachOType<TargetEndianness, false> > {
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2013-04-10 03:48:25 +00:00
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LLVM_MACHOB_IMPORT_TYPES(TargetEndianness)
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2013-04-05 18:45:28 +00:00
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char Name[16];
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char SegmentName[16];
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2013-04-10 03:48:25 +00:00
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MachOInt32 Address;
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MachOInt32 Size;
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MachOInt32 Offset;
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MachOInt32 Align;
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MachOInt32 RelocationTableOffset;
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MachOInt32 NumRelocationTableEntries;
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MachOInt32 Flags;
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MachOInt32 Reserved1;
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MachOInt32 Reserved2;
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2013-04-05 18:45:28 +00:00
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};
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2013-04-10 15:18:39 +00:00
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template<endianness TargetEndianness>
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struct Section<MachOType<TargetEndianness, true> > {
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2013-04-10 03:48:25 +00:00
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LLVM_MACHOB_IMPORT_TYPES(TargetEndianness)
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2013-04-05 18:45:28 +00:00
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char Name[16];
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char SegmentName[16];
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2013-04-10 03:48:25 +00:00
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MachOInt64 Address;
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MachOInt64 Size;
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MachOInt32 Offset;
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MachOInt32 Align;
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MachOInt32 RelocationTableOffset;
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MachOInt32 NumRelocationTableEntries;
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MachOInt32 Flags;
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MachOInt32 Reserved1;
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MachOInt32 Reserved2;
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MachOInt32 Reserved3;
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2013-04-05 18:45:28 +00:00
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};
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2013-04-06 01:24:11 +00:00
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2013-04-10 03:48:25 +00:00
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template<endianness TargetEndianness>
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2013-04-06 01:24:11 +00:00
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struct RelocationEntry {
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2013-04-10 03:48:25 +00:00
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LLVM_MACHOB_IMPORT_TYPES(TargetEndianness)
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MachOInt32 Word0;
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MachOInt32 Word1;
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2013-04-06 01:24:11 +00:00
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};
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2013-04-06 01:59:05 +00:00
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2013-04-10 03:48:25 +00:00
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template<endianness TargetEndianness>
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2013-04-09 00:22:58 +00:00
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struct SymbolTableEntryBase {
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2013-04-10 03:48:25 +00:00
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LLVM_MACHOB_IMPORT_TYPES(TargetEndianness)
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MachOInt32 StringIndex;
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2013-04-09 00:22:58 +00:00
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uint8_t Type;
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uint8_t SectionIndex;
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2013-04-10 03:48:25 +00:00
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MachOInt16 Flags;
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2013-04-09 00:22:58 +00:00
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};
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2013-04-10 03:48:25 +00:00
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template<class MachOT>
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2013-04-08 20:45:01 +00:00
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struct SymbolTableEntry;
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2013-04-10 15:18:39 +00:00
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template<endianness TargetEndianness, bool Is64Bits>
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struct SymbolTableEntry<MachOType<TargetEndianness, Is64Bits> > {
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LLVM_MACHO_IMPORT_TYPES(MachOType, TargetEndianness, Is64Bits)
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2013-04-10 03:48:25 +00:00
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MachOInt32 StringIndex;
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2013-04-06 01:59:05 +00:00
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uint8_t Type;
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uint8_t SectionIndex;
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2013-04-10 03:48:25 +00:00
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MachOInt16 Flags;
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MachOIntPtr Value;
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2013-04-06 02:15:44 +00:00
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};
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2013-04-06 03:31:08 +00:00
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2013-04-10 03:48:25 +00:00
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template<endianness TargetEndianness>
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2013-04-07 18:08:12 +00:00
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struct LoadCommand {
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2013-04-10 03:48:25 +00:00
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LLVM_MACHOB_IMPORT_TYPES(TargetEndianness)
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MachOInt32 Type;
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MachOInt32 Size;
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2013-04-07 18:08:12 +00:00
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};
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2013-04-10 03:48:25 +00:00
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template<endianness TargetEndianness>
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2013-04-06 03:31:08 +00:00
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struct SymtabLoadCommand {
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2013-04-10 03:48:25 +00:00
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LLVM_MACHOB_IMPORT_TYPES(TargetEndianness)
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MachOInt32 Type;
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MachOInt32 Size;
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MachOInt32 SymbolTableOffset;
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MachOInt32 NumSymbolTableEntries;
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MachOInt32 StringTableOffset;
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MachOInt32 StringTableSize;
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2013-04-06 03:31:08 +00:00
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};
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2013-04-06 03:50:05 +00:00
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2013-04-10 03:48:25 +00:00
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template<class MachOT>
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2013-04-08 20:45:01 +00:00
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struct SegmentLoadCommand;
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2013-04-10 15:18:39 +00:00
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template<endianness TargetEndianness, bool Is64Bits>
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struct SegmentLoadCommand<MachOType<TargetEndianness, Is64Bits> > {
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LLVM_MACHO_IMPORT_TYPES(MachOType, TargetEndianness, Is64Bits)
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2013-04-10 03:48:25 +00:00
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MachOInt32 Type;
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MachOInt32 Size;
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2013-04-06 03:50:05 +00:00
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char Name[16];
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2013-04-10 03:48:25 +00:00
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MachOIntPtr VMAddress;
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MachOIntPtr VMSize;
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MachOIntPtr FileOffset;
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MachOIntPtr FileSize;
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MachOInt32 MaxVMProtection;
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MachOInt32 InitialVMProtection;
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MachOInt32 NumSections;
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MachOInt32 Flags;
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2013-04-06 03:50:05 +00:00
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};
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2013-04-07 14:40:18 +00:00
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2013-04-10 03:48:25 +00:00
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template<endianness TargetEndianness>
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2013-04-07 14:40:18 +00:00
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struct LinkeditDataLoadCommand {
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2013-04-10 03:48:25 +00:00
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LLVM_MACHOB_IMPORT_TYPES(TargetEndianness)
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MachOInt32 Type;
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MachOInt32 Size;
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MachOInt32 DataOffset;
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MachOInt32 DataSize;
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2013-04-07 14:40:18 +00:00
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};
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2013-04-07 19:26:57 +00:00
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2013-04-10 03:48:25 +00:00
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template<endianness TargetEndianness>
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2013-04-07 19:26:57 +00:00
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struct Header {
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2013-04-10 03:48:25 +00:00
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LLVM_MACHOB_IMPORT_TYPES(TargetEndianness)
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MachOInt32 Magic;
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MachOInt32 CPUType;
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MachOInt32 CPUSubtype;
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MachOInt32 FileType;
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MachOInt32 NumLoadCommands;
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MachOInt32 SizeOfLoadCommands;
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MachOInt32 Flags;
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2013-04-07 19:26:57 +00:00
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};
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2013-04-05 18:45:28 +00:00
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}
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2013-04-09 14:49:08 +00:00
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class MachOObjectFileBase : public ObjectFile {
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2011-10-11 17:32:27 +00:00
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public:
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2013-04-10 03:48:25 +00:00
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typedef MachOFormat::SymbolTableEntryBase<support::little>
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SymbolTableEntryBase;
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typedef MachOFormat::SymtabLoadCommand<support::little> SymtabLoadCommand;
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typedef MachOFormat::RelocationEntry<support::little> RelocationEntry;
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2013-04-09 14:49:08 +00:00
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typedef MachOFormat::SectionBase SectionBase;
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2013-04-10 03:48:25 +00:00
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typedef MachOFormat::LoadCommand<support::little> LoadCommand;
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typedef MachOFormat::Header<support::little> Header;
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typedef MachOFormat::LinkeditDataLoadCommand<support::little>
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LinkeditDataLoadCommand;
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2013-04-09 14:49:08 +00:00
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MachOObjectFileBase(MemoryBuffer *Object, bool Is64Bits, error_code &ec);
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2011-10-11 17:32:27 +00:00
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virtual symbol_iterator begin_symbols() const;
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virtual symbol_iterator end_symbols() const;
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2012-02-28 00:40:37 +00:00
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virtual symbol_iterator begin_dynamic_symbols() const;
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virtual symbol_iterator end_dynamic_symbols() const;
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2012-03-01 01:36:50 +00:00
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virtual library_iterator begin_libraries_needed() const;
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virtual library_iterator end_libraries_needed() const;
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2011-10-11 17:32:27 +00:00
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virtual section_iterator end_sections() const;
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virtual uint8_t getBytesInAddress() const;
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virtual StringRef getFileFormatName() const;
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virtual unsigned getArch() const;
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2012-03-01 22:19:54 +00:00
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virtual StringRef getLoadName() const;
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2011-10-11 17:32:27 +00:00
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Add a function to get the segment name of a section.
On MachO, sections also have segment names. When a tool looking at a .o file
prints a segment name, this is what they mean. In reality, a .o has only one
anonymous, segment.
This patch adds a MachO only function to fetch that segment name. I named it
getSectionFinalSegmentName since the main use for the name seems to be inform
the linker with segment this section should go to.
The patch also changes MachOObjectFile::getSectionName to return just the
section name instead of computing SegmentName,SectionName.
The main difference from the previous patch is that it doesn't use
InMemoryStruct. It is extremely dangerous: if the endians match it returns
a pointer to the file buffer, if not, it returns a pointer to an internal buffer
that is overwritten in the next API call.
We should change all of this code to use
support::detail::packed_endian_specific_integral like ELF, but since these
functions only handle strings, they work with big and little endian machines
as is.
I have tested this by installing ubuntu 12.10 ppc on qemu, that is why it took
so long :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170838 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-21 03:47:03 +00:00
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// In a MachO file, sections have a segment name. This is used in the .o
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// files. They have a single segment, but this field specifies which segment
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// a section should be put in in the final object.
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2013-04-05 15:15:22 +00:00
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StringRef getSectionFinalSegmentName(DataRefImpl Sec) const;
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// Names are stored as 16 bytes. These returns the raw 16 bytes without
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// interpreting them as a C string.
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ArrayRef<char> getSectionRawName(DataRefImpl Sec) const;
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ArrayRef<char>getSectionRawFinalSegmentName(DataRefImpl Sec) const;
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Add a function to get the segment name of a section.
On MachO, sections also have segment names. When a tool looking at a .o file
prints a segment name, this is what they mean. In reality, a .o has only one
anonymous, segment.
This patch adds a MachO only function to fetch that segment name. I named it
getSectionFinalSegmentName since the main use for the name seems to be inform
the linker with segment this section should go to.
The patch also changes MachOObjectFile::getSectionName to return just the
section name instead of computing SegmentName,SectionName.
The main difference from the previous patch is that it doesn't use
InMemoryStruct. It is extremely dangerous: if the endians match it returns
a pointer to the file buffer, if not, it returns a pointer to an internal buffer
that is overwritten in the next API call.
We should change all of this code to use
support::detail::packed_endian_specific_integral like ELF, but since these
functions only handle strings, they work with big and little endian machines
as is.
I have tested this by installing ubuntu 12.10 ppc on qemu, that is why it took
so long :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170838 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-21 03:47:03 +00:00
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2013-04-07 15:46:05 +00:00
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bool is64Bit() const;
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2013-04-09 14:49:08 +00:00
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const LoadCommand *getLoadCommandInfo(unsigned Index) const;
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2013-04-07 16:07:35 +00:00
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void ReadULEB128s(uint64_t Index, SmallVectorImpl<uint64_t> &Out) const;
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2013-04-09 14:49:08 +00:00
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const Header *getHeader() const;
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2013-04-07 19:05:30 +00:00
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unsigned getHeaderSize() const;
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StringRef getData(size_t Offset, size_t Size) const;
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2011-10-17 21:37:03 +00:00
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2011-10-17 23:53:37 +00:00
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static inline bool classof(const Binary *v) {
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2012-03-09 20:41:57 +00:00
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return v->isMachO();
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2011-10-17 23:53:37 +00:00
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}
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2011-10-11 17:32:27 +00:00
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protected:
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virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
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virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
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virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
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2012-02-28 23:47:53 +00:00
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virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
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2011-10-17 20:19:29 +00:00
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virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
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2011-10-17 23:54:46 +00:00
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virtual error_code getSymbolSection(DataRefImpl Symb,
|
|
|
|
section_iterator &Res) const;
|
2012-10-29 10:47:00 +00:00
|
|
|
virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
|
2011-10-11 17:32:27 +00:00
|
|
|
virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
|
|
|
|
virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
|
|
|
|
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
|
2012-04-12 20:13:57 +00:00
|
|
|
virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
|
|
|
|
bool &Res) const;
|
|
|
|
virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
|
2012-10-10 01:41:33 +00:00
|
|
|
virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
|
2011-10-11 17:32:27 +00:00
|
|
|
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
|
|
|
|
|
|
|
|
virtual error_code getRelocationNext(DataRefImpl Rel,
|
|
|
|
RelocationRef &Res) const;
|
|
|
|
|
2012-03-01 01:36:50 +00:00
|
|
|
virtual error_code getLibraryNext(DataRefImpl LibData, LibraryRef &Res) const;
|
|
|
|
virtual error_code getLibraryPath(DataRefImpl LibData, StringRef &Res) const;
|
|
|
|
|
2013-04-09 14:49:08 +00:00
|
|
|
std::size_t getSectionIndex(DataRefImpl Sec) const;
|
|
|
|
|
2011-10-11 17:32:27 +00:00
|
|
|
typedef SmallVector<DataRefImpl, 1> SectionList;
|
|
|
|
SectionList Sections;
|
|
|
|
|
2013-04-09 14:49:08 +00:00
|
|
|
void moveToNextSymbol(DataRefImpl &DRI) const;
|
|
|
|
void printRelocationTargetName(const RelocationEntry *RE,
|
|
|
|
raw_string_ostream &fmt) const;
|
|
|
|
const SectionBase *getSectionBase(DataRefImpl DRI) const;
|
|
|
|
const SymbolTableEntryBase *getSymbolTableEntryBase(DataRefImpl DRI) const;
|
2011-10-11 17:32:27 +00:00
|
|
|
|
2013-04-09 14:49:08 +00:00
|
|
|
private:
|
2013-04-06 03:31:08 +00:00
|
|
|
|
2013-04-09 14:49:08 +00:00
|
|
|
const SymbolTableEntryBase *getSymbolTableEntryBase(DataRefImpl DRI,
|
|
|
|
const SymtabLoadCommand *SymtabLoadCmd) const;
|
|
|
|
};
|
2013-04-06 03:31:08 +00:00
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
struct MachOObjectFileHelperCommon;
|
|
|
|
|
|
|
|
template<endianness TargetEndianness, bool Is64Bits>
|
|
|
|
struct MachOObjectFileHelperCommon<MachOType<TargetEndianness, Is64Bits> > {
|
|
|
|
typedef
|
|
|
|
MachOFormat::SegmentLoadCommand<MachOType<TargetEndianness, Is64Bits> >
|
2013-04-10 03:48:25 +00:00
|
|
|
SegmentLoadCommand;
|
2013-04-10 15:33:44 +00:00
|
|
|
typedef MachOFormat::SymbolTableEntry<MachOType<TargetEndianness, Is64Bits> >
|
2013-04-10 03:48:25 +00:00
|
|
|
SymbolTableEntry;
|
2013-04-10 15:33:44 +00:00
|
|
|
typedef MachOFormat::Section<MachOType<TargetEndianness, Is64Bits> > Section;
|
2013-04-09 14:49:08 +00:00
|
|
|
};
|
2013-04-06 03:31:08 +00:00
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
struct MachOObjectFileHelper;
|
2011-10-24 23:20:07 +00:00
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<endianness TargetEndianness>
|
|
|
|
struct MachOObjectFileHelper<MachOType<TargetEndianness, false> > :
|
|
|
|
public MachOObjectFileHelperCommon<MachOType<TargetEndianness, false> > {
|
2013-04-09 14:49:08 +00:00
|
|
|
static const macho::LoadCommandType SegmentLoadType = macho::LCT_Segment;
|
|
|
|
};
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<endianness TargetEndianness>
|
|
|
|
struct MachOObjectFileHelper<MachOType<TargetEndianness, true> > :
|
|
|
|
public MachOObjectFileHelperCommon<MachOType<TargetEndianness, true> > {
|
2013-04-09 14:49:08 +00:00
|
|
|
static const macho::LoadCommandType SegmentLoadType = macho::LCT_Segment64;
|
|
|
|
};
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
class MachOObjectFile : public MachOObjectFileBase {
|
|
|
|
public:
|
2013-04-10 15:33:44 +00:00
|
|
|
static const endianness TargetEndianness = MachOT::TargetEndianness;
|
|
|
|
static const bool Is64Bits = MachOT::Is64Bits;
|
|
|
|
|
|
|
|
typedef MachOObjectFileHelper<MachOT> Helper;
|
2013-04-10 15:18:39 +00:00
|
|
|
static const macho::LoadCommandType SegmentLoadType = Helper::SegmentLoadType;
|
|
|
|
typedef typename Helper::SegmentLoadCommand SegmentLoadCommand;
|
|
|
|
typedef typename Helper::SymbolTableEntry SymbolTableEntry;
|
|
|
|
typedef typename Helper::Section Section;
|
2013-04-09 14:49:08 +00:00
|
|
|
|
2013-04-10 14:57:48 +00:00
|
|
|
MachOObjectFile(MemoryBuffer *Object, error_code &ec);
|
|
|
|
static bool classof(const Binary *v);
|
2013-04-09 14:49:08 +00:00
|
|
|
|
|
|
|
const Section *getSection(DataRefImpl DRI) const;
|
|
|
|
const SymbolTableEntry *getSymbolTableEntry(DataRefImpl DRI) const;
|
|
|
|
const RelocationEntry *getRelocation(DataRefImpl Rel) 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 getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
|
|
|
|
virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
|
|
|
|
virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
|
|
|
|
virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
|
|
|
|
virtual error_code getRelocationAddress(DataRefImpl Rel, uint64_t &Res) const;
|
|
|
|
virtual error_code getRelocationOffset(DataRefImpl Rel, uint64_t &Res) const;
|
|
|
|
virtual error_code getRelocationSymbol(DataRefImpl Rel, SymbolRef &Res) const;
|
|
|
|
virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
|
|
|
|
int64_t &Res) const;
|
|
|
|
virtual error_code getRelocationType(DataRefImpl Rel, uint64_t &Res) const;
|
|
|
|
virtual error_code getRelocationTypeName(DataRefImpl Rel,
|
|
|
|
SmallVectorImpl<char> &Result) const;
|
|
|
|
virtual error_code getRelocationValueString(DataRefImpl Rel,
|
|
|
|
SmallVectorImpl<char> &Result) const;
|
|
|
|
virtual error_code getRelocationHidden(DataRefImpl Rel, bool &Result) const;
|
|
|
|
virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
|
|
|
|
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
|
|
|
|
bool &Result) const;
|
|
|
|
virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
|
|
|
|
virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
|
|
|
|
virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
|
|
|
|
virtual section_iterator begin_sections() const;
|
|
|
|
void moveToNextSection(DataRefImpl &DRI) const;
|
2011-10-11 17:32:27 +00:00
|
|
|
};
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
MachOObjectFile<MachOT>::MachOObjectFile(MemoryBuffer *Object,
|
|
|
|
error_code &ec) :
|
|
|
|
MachOObjectFileBase(Object, Is64Bits, ec) {
|
2013-04-10 14:57:48 +00:00
|
|
|
DataRefImpl DRI;
|
|
|
|
moveToNextSection(DRI);
|
|
|
|
uint32_t LoadCommandCount = getHeader()->NumLoadCommands;
|
|
|
|
while (DRI.d.a < LoadCommandCount) {
|
|
|
|
Sections.push_back(DRI);
|
|
|
|
DRI.d.b++;
|
|
|
|
moveToNextSection(DRI);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
bool MachOObjectFile<MachOT>::classof(const Binary *v) {
|
|
|
|
return v->getType() == getMachOType(true, Is64Bits);
|
2013-04-10 14:57:48 +00:00
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
const typename MachOObjectFile<MachOT>::Section *
|
|
|
|
MachOObjectFile<MachOT>::getSection(DataRefImpl DRI) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const SectionBase *Addr = getSectionBase(DRI);
|
|
|
|
return reinterpret_cast<const Section*>(Addr);
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
const typename MachOObjectFile<MachOT>::SymbolTableEntry *
|
|
|
|
MachOObjectFile<MachOT>::getSymbolTableEntry(DataRefImpl DRI) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const SymbolTableEntryBase *Base = getSymbolTableEntryBase(DRI);
|
|
|
|
return reinterpret_cast<const SymbolTableEntry*>(Base);
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
const typename MachOObjectFile<MachOT>::RelocationEntry *
|
|
|
|
MachOObjectFile<MachOT>::getRelocation(DataRefImpl Rel) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sections[Rel.d.b]);
|
|
|
|
uint32_t RelOffset = Sect->RelocationTableOffset;
|
|
|
|
uint64_t Offset = RelOffset + Rel.d.a * sizeof(RelocationEntry);
|
|
|
|
StringRef Data = getData(Offset, sizeof(RelocationEntry));
|
|
|
|
return reinterpret_cast<const RelocationEntry*>(Data.data());
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getSectionAddress(DataRefImpl Sec,
|
|
|
|
uint64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sec);
|
|
|
|
Res = Sect->Address;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getSectionSize(DataRefImpl Sec,
|
|
|
|
uint64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sec);
|
|
|
|
Res = Sect->Size;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getSectionContents(DataRefImpl Sec,
|
|
|
|
StringRef &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sec);
|
|
|
|
Res = getData(Sect->Offset, Sect->Size);
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getSectionAlignment(DataRefImpl Sec,
|
|
|
|
uint64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sec);
|
|
|
|
Res = uint64_t(1) << Sect->Align;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::isSectionText(DataRefImpl Sec, bool &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sec);
|
|
|
|
Res = Sect->Flags & macho::SF_PureInstructions;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::isSectionZeroInit(DataRefImpl Sec, bool &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sec);
|
|
|
|
unsigned SectionType = Sect->Flags & MachO::SectionFlagMaskSectionType;
|
|
|
|
Res = SectionType == MachO::SectionTypeZeroFill ||
|
|
|
|
SectionType == MachO::SectionTypeZeroFillLarge;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
relocation_iterator
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getSectionRelEnd(DataRefImpl Sec) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sec);
|
|
|
|
uint32_t LastReloc = Sect->NumRelocationTableEntries;
|
|
|
|
DataRefImpl Ret;
|
|
|
|
Ret.d.a = LastReloc;
|
|
|
|
Ret.d.b = getSectionIndex(Sec);
|
|
|
|
return relocation_iterator(RelocationRef(Ret, this));
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getRelocationAddress(DataRefImpl Rel,
|
|
|
|
uint64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const Section *Sect = getSection(Sections[Rel.d.b]);
|
|
|
|
uint64_t SectAddress = Sect->Address;
|
|
|
|
const RelocationEntry *RE = getRelocation(Rel);
|
|
|
|
unsigned Arch = getArch();
|
|
|
|
bool isScattered = (Arch != Triple::x86_64) &&
|
|
|
|
(RE->Word0 & macho::RF_Scattered);
|
|
|
|
|
|
|
|
uint64_t RelAddr;
|
|
|
|
if (isScattered)
|
|
|
|
RelAddr = RE->Word0 & 0xFFFFFF;
|
|
|
|
else
|
|
|
|
RelAddr = RE->Word0;
|
|
|
|
|
|
|
|
Res = SectAddress + RelAddr;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getRelocationOffset(DataRefImpl Rel,
|
|
|
|
uint64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const RelocationEntry *RE = getRelocation(Rel);
|
|
|
|
|
|
|
|
unsigned Arch = getArch();
|
|
|
|
bool isScattered = (Arch != Triple::x86_64) &&
|
|
|
|
(RE->Word0 & macho::RF_Scattered);
|
|
|
|
if (isScattered)
|
|
|
|
Res = RE->Word0 & 0xFFFFFF;
|
|
|
|
else
|
|
|
|
Res = RE->Word0;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getRelocationSymbol(DataRefImpl Rel,
|
|
|
|
SymbolRef &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const RelocationEntry *RE = getRelocation(Rel);
|
|
|
|
uint32_t SymbolIdx = RE->Word1 & 0xffffff;
|
|
|
|
bool isExtern = (RE->Word1 >> 27) & 1;
|
|
|
|
|
|
|
|
DataRefImpl Sym;
|
|
|
|
moveToNextSymbol(Sym);
|
|
|
|
if (isExtern) {
|
|
|
|
for (unsigned i = 0; i < SymbolIdx; i++) {
|
|
|
|
Sym.d.b++;
|
|
|
|
moveToNextSymbol(Sym);
|
|
|
|
assert(Sym.d.a < getHeader()->NumLoadCommands &&
|
|
|
|
"Relocation symbol index out of range!");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
Res = SymbolRef(Sym, this);
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getRelocationAdditionalInfo(DataRefImpl Rel,
|
|
|
|
int64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const RelocationEntry *RE = getRelocation(Rel);
|
|
|
|
bool isExtern = (RE->Word1 >> 27) & 1;
|
|
|
|
Res = 0;
|
|
|
|
if (!isExtern) {
|
|
|
|
const uint8_t* sectAddress = base();
|
|
|
|
const Section *Sect = getSection(Sections[Rel.d.b]);
|
|
|
|
sectAddress += Sect->Offset;
|
|
|
|
Res = reinterpret_cast<uintptr_t>(sectAddress);
|
|
|
|
}
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
error_code MachOObjectFile<MachOT>::getRelocationType(DataRefImpl Rel,
|
|
|
|
uint64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const RelocationEntry *RE = getRelocation(Rel);
|
|
|
|
Res = RE->Word0;
|
|
|
|
Res <<= 32;
|
|
|
|
Res |= RE->Word1;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getRelocationTypeName(DataRefImpl Rel,
|
2013-04-09 14:49:08 +00:00
|
|
|
SmallVectorImpl<char> &Result) const {
|
|
|
|
// TODO: Support scattered relocations.
|
|
|
|
StringRef res;
|
|
|
|
const RelocationEntry *RE = getRelocation(Rel);
|
|
|
|
|
|
|
|
unsigned Arch = getArch();
|
|
|
|
bool isScattered = (Arch != Triple::x86_64) &&
|
|
|
|
(RE->Word0 & macho::RF_Scattered);
|
|
|
|
|
|
|
|
unsigned r_type;
|
|
|
|
if (isScattered)
|
|
|
|
r_type = (RE->Word0 >> 24) & 0xF;
|
|
|
|
else
|
|
|
|
r_type = (RE->Word1 >> 28) & 0xF;
|
|
|
|
|
|
|
|
switch (Arch) {
|
|
|
|
case Triple::x86: {
|
|
|
|
static const char *const Table[] = {
|
|
|
|
"GENERIC_RELOC_VANILLA",
|
|
|
|
"GENERIC_RELOC_PAIR",
|
|
|
|
"GENERIC_RELOC_SECTDIFF",
|
|
|
|
"GENERIC_RELOC_PB_LA_PTR",
|
|
|
|
"GENERIC_RELOC_LOCAL_SECTDIFF",
|
|
|
|
"GENERIC_RELOC_TLV" };
|
|
|
|
|
|
|
|
if (r_type > 6)
|
|
|
|
res = "Unknown";
|
|
|
|
else
|
|
|
|
res = Table[r_type];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Triple::x86_64: {
|
|
|
|
static const char *const Table[] = {
|
|
|
|
"X86_64_RELOC_UNSIGNED",
|
|
|
|
"X86_64_RELOC_SIGNED",
|
|
|
|
"X86_64_RELOC_BRANCH",
|
|
|
|
"X86_64_RELOC_GOT_LOAD",
|
|
|
|
"X86_64_RELOC_GOT",
|
|
|
|
"X86_64_RELOC_SUBTRACTOR",
|
|
|
|
"X86_64_RELOC_SIGNED_1",
|
|
|
|
"X86_64_RELOC_SIGNED_2",
|
|
|
|
"X86_64_RELOC_SIGNED_4",
|
|
|
|
"X86_64_RELOC_TLV" };
|
|
|
|
|
|
|
|
if (r_type > 9)
|
|
|
|
res = "Unknown";
|
|
|
|
else
|
|
|
|
res = Table[r_type];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Triple::arm: {
|
|
|
|
static const char *const Table[] = {
|
|
|
|
"ARM_RELOC_VANILLA",
|
|
|
|
"ARM_RELOC_PAIR",
|
|
|
|
"ARM_RELOC_SECTDIFF",
|
|
|
|
"ARM_RELOC_LOCAL_SECTDIFF",
|
|
|
|
"ARM_RELOC_PB_LA_PTR",
|
|
|
|
"ARM_RELOC_BR24",
|
|
|
|
"ARM_THUMB_RELOC_BR22",
|
|
|
|
"ARM_THUMB_32BIT_BRANCH",
|
|
|
|
"ARM_RELOC_HALF",
|
|
|
|
"ARM_RELOC_HALF_SECTDIFF" };
|
|
|
|
|
|
|
|
if (r_type > 9)
|
|
|
|
res = "Unknown";
|
|
|
|
else
|
|
|
|
res = Table[r_type];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Triple::ppc: {
|
|
|
|
static const char *const Table[] = {
|
|
|
|
"PPC_RELOC_VANILLA",
|
|
|
|
"PPC_RELOC_PAIR",
|
|
|
|
"PPC_RELOC_BR14",
|
|
|
|
"PPC_RELOC_BR24",
|
|
|
|
"PPC_RELOC_HI16",
|
|
|
|
"PPC_RELOC_LO16",
|
|
|
|
"PPC_RELOC_HA16",
|
|
|
|
"PPC_RELOC_LO14",
|
|
|
|
"PPC_RELOC_SECTDIFF",
|
|
|
|
"PPC_RELOC_PB_LA_PTR",
|
|
|
|
"PPC_RELOC_HI16_SECTDIFF",
|
|
|
|
"PPC_RELOC_LO16_SECTDIFF",
|
|
|
|
"PPC_RELOC_HA16_SECTDIFF",
|
|
|
|
"PPC_RELOC_JBSR",
|
|
|
|
"PPC_RELOC_LO14_SECTDIFF",
|
|
|
|
"PPC_RELOC_LOCAL_SECTDIFF" };
|
|
|
|
|
|
|
|
res = Table[r_type];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case Triple::UnknownArch:
|
|
|
|
res = "Unknown";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
Result.append(res.begin(), res.end());
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getRelocationValueString(DataRefImpl Rel,
|
2013-04-09 14:49:08 +00:00
|
|
|
SmallVectorImpl<char> &Result) const {
|
|
|
|
const RelocationEntry *RE = getRelocation(Rel);
|
|
|
|
|
|
|
|
unsigned Arch = getArch();
|
|
|
|
bool isScattered = (Arch != Triple::x86_64) &&
|
|
|
|
(RE->Word0 & macho::RF_Scattered);
|
|
|
|
|
|
|
|
std::string fmtbuf;
|
|
|
|
raw_string_ostream fmt(fmtbuf);
|
|
|
|
|
|
|
|
unsigned Type;
|
|
|
|
if (isScattered)
|
|
|
|
Type = (RE->Word0 >> 24) & 0xF;
|
|
|
|
else
|
|
|
|
Type = (RE->Word1 >> 28) & 0xF;
|
|
|
|
|
|
|
|
bool isPCRel;
|
|
|
|
if (isScattered)
|
|
|
|
isPCRel = ((RE->Word0 >> 30) & 1);
|
|
|
|
else
|
|
|
|
isPCRel = ((RE->Word1 >> 24) & 1);
|
|
|
|
|
|
|
|
// Determine any addends that should be displayed with the relocation.
|
|
|
|
// These require decoding the relocation type, which is triple-specific.
|
|
|
|
|
|
|
|
// X86_64 has entirely custom relocation types.
|
|
|
|
if (Arch == Triple::x86_64) {
|
|
|
|
bool isPCRel = ((RE->Word1 >> 24) & 1);
|
|
|
|
|
|
|
|
switch (Type) {
|
|
|
|
case macho::RIT_X86_64_GOTLoad: // X86_64_RELOC_GOT_LOAD
|
|
|
|
case macho::RIT_X86_64_GOT: { // X86_64_RELOC_GOT
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
fmt << "@GOT";
|
|
|
|
if (isPCRel) fmt << "PCREL";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case macho::RIT_X86_64_Subtractor: { // X86_64_RELOC_SUBTRACTOR
|
|
|
|
DataRefImpl RelNext = Rel;
|
|
|
|
RelNext.d.a++;
|
|
|
|
const RelocationEntry *RENext = getRelocation(RelNext);
|
|
|
|
|
|
|
|
// X86_64_SUBTRACTOR must be followed by a relocation of type
|
|
|
|
// X86_64_RELOC_UNSIGNED.
|
|
|
|
// NOTE: Scattered relocations don't exist on x86_64.
|
|
|
|
unsigned RType = (RENext->Word1 >> 28) & 0xF;
|
|
|
|
if (RType != 0)
|
|
|
|
report_fatal_error("Expected X86_64_RELOC_UNSIGNED after "
|
|
|
|
"X86_64_RELOC_SUBTRACTOR.");
|
|
|
|
|
|
|
|
// The X86_64_RELOC_UNSIGNED contains the minuend symbol,
|
|
|
|
// X86_64_SUBTRACTOR contains to the subtrahend.
|
|
|
|
printRelocationTargetName(RENext, fmt);
|
|
|
|
fmt << "-";
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case macho::RIT_X86_64_TLV:
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
fmt << "@TLV";
|
|
|
|
if (isPCRel) fmt << "P";
|
|
|
|
break;
|
|
|
|
case macho::RIT_X86_64_Signed1: // X86_64_RELOC_SIGNED1
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
fmt << "-1";
|
|
|
|
break;
|
|
|
|
case macho::RIT_X86_64_Signed2: // X86_64_RELOC_SIGNED2
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
fmt << "-2";
|
|
|
|
break;
|
|
|
|
case macho::RIT_X86_64_Signed4: // X86_64_RELOC_SIGNED4
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
fmt << "-4";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
// X86 and ARM share some relocation types in common.
|
|
|
|
} else if (Arch == Triple::x86 || Arch == Triple::arm) {
|
|
|
|
// Generic relocation types...
|
|
|
|
switch (Type) {
|
|
|
|
case macho::RIT_Pair: // GENERIC_RELOC_PAIR - prints no info
|
|
|
|
return object_error::success;
|
|
|
|
case macho::RIT_Difference: { // GENERIC_RELOC_SECTDIFF
|
|
|
|
DataRefImpl RelNext = Rel;
|
|
|
|
RelNext.d.a++;
|
|
|
|
const RelocationEntry *RENext = getRelocation(RelNext);
|
|
|
|
|
|
|
|
// X86 sect diff's must be followed by a relocation of type
|
|
|
|
// GENERIC_RELOC_PAIR.
|
|
|
|
bool isNextScattered = (Arch != Triple::x86_64) &&
|
|
|
|
(RENext->Word0 & macho::RF_Scattered);
|
|
|
|
unsigned RType;
|
|
|
|
if (isNextScattered)
|
|
|
|
RType = (RENext->Word0 >> 24) & 0xF;
|
|
|
|
else
|
|
|
|
RType = (RENext->Word1 >> 28) & 0xF;
|
|
|
|
if (RType != 1)
|
|
|
|
report_fatal_error("Expected GENERIC_RELOC_PAIR after "
|
|
|
|
"GENERIC_RELOC_SECTDIFF.");
|
|
|
|
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
fmt << "-";
|
|
|
|
printRelocationTargetName(RENext, fmt);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (Arch == Triple::x86) {
|
|
|
|
// All X86 relocations that need special printing were already
|
|
|
|
// handled in the generic code.
|
|
|
|
switch (Type) {
|
|
|
|
case macho::RIT_Generic_LocalDifference:{// GENERIC_RELOC_LOCAL_SECTDIFF
|
|
|
|
DataRefImpl RelNext = Rel;
|
|
|
|
RelNext.d.a++;
|
|
|
|
const RelocationEntry *RENext = getRelocation(RelNext);
|
|
|
|
|
|
|
|
// X86 sect diff's must be followed by a relocation of type
|
|
|
|
// GENERIC_RELOC_PAIR.
|
|
|
|
bool isNextScattered = (Arch != Triple::x86_64) &&
|
|
|
|
(RENext->Word0 & macho::RF_Scattered);
|
|
|
|
unsigned RType;
|
|
|
|
if (isNextScattered)
|
|
|
|
RType = (RENext->Word0 >> 24) & 0xF;
|
|
|
|
else
|
|
|
|
RType = (RENext->Word1 >> 28) & 0xF;
|
|
|
|
if (RType != 1)
|
|
|
|
report_fatal_error("Expected GENERIC_RELOC_PAIR after "
|
|
|
|
"GENERIC_RELOC_LOCAL_SECTDIFF.");
|
|
|
|
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
fmt << "-";
|
|
|
|
printRelocationTargetName(RENext, fmt);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case macho::RIT_Generic_TLV: {
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
fmt << "@TLV";
|
|
|
|
if (isPCRel) fmt << "P";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
}
|
|
|
|
} else { // ARM-specific relocations
|
|
|
|
switch (Type) {
|
|
|
|
case macho::RIT_ARM_Half: // ARM_RELOC_HALF
|
|
|
|
case macho::RIT_ARM_HalfDifference: { // ARM_RELOC_HALF_SECTDIFF
|
|
|
|
// Half relocations steal a bit from the length field to encode
|
|
|
|
// whether this is an upper16 or a lower16 relocation.
|
|
|
|
bool isUpper;
|
|
|
|
if (isScattered)
|
|
|
|
isUpper = (RE->Word0 >> 28) & 1;
|
|
|
|
else
|
|
|
|
isUpper = (RE->Word1 >> 25) & 1;
|
|
|
|
|
|
|
|
if (isUpper)
|
|
|
|
fmt << ":upper16:(";
|
|
|
|
else
|
|
|
|
fmt << ":lower16:(";
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
|
|
|
|
DataRefImpl RelNext = Rel;
|
|
|
|
RelNext.d.a++;
|
|
|
|
const RelocationEntry *RENext = getRelocation(RelNext);
|
|
|
|
|
|
|
|
// ARM half relocs must be followed by a relocation of type
|
|
|
|
// ARM_RELOC_PAIR.
|
|
|
|
bool isNextScattered = (Arch != Triple::x86_64) &&
|
|
|
|
(RENext->Word0 & macho::RF_Scattered);
|
|
|
|
unsigned RType;
|
|
|
|
if (isNextScattered)
|
|
|
|
RType = (RENext->Word0 >> 24) & 0xF;
|
|
|
|
else
|
|
|
|
RType = (RENext->Word1 >> 28) & 0xF;
|
|
|
|
|
|
|
|
if (RType != 1)
|
|
|
|
report_fatal_error("Expected ARM_RELOC_PAIR after "
|
|
|
|
"GENERIC_RELOC_HALF");
|
|
|
|
|
|
|
|
// NOTE: The half of the target virtual address is stashed in the
|
|
|
|
// address field of the secondary relocation, but we can't reverse
|
|
|
|
// engineer the constant offset from it without decoding the movw/movt
|
|
|
|
// instruction to find the other half in its immediate field.
|
|
|
|
|
|
|
|
// ARM_RELOC_HALF_SECTDIFF encodes the second section in the
|
|
|
|
// symbol/section pointer of the follow-on relocation.
|
|
|
|
if (Type == macho::RIT_ARM_HalfDifference) {
|
|
|
|
fmt << "-";
|
|
|
|
printRelocationTargetName(RENext, fmt);
|
|
|
|
}
|
|
|
|
|
|
|
|
fmt << ")";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default: {
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
printRelocationTargetName(RE, fmt);
|
|
|
|
|
|
|
|
fmt.flush();
|
|
|
|
Result.append(fmtbuf.begin(), fmtbuf.end());
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getRelocationHidden(DataRefImpl Rel,
|
|
|
|
bool &Result) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const RelocationEntry *RE = getRelocation(Rel);
|
|
|
|
|
|
|
|
unsigned Arch = getArch();
|
|
|
|
bool isScattered = (Arch != Triple::x86_64) &&
|
|
|
|
(RE->Word0 & macho::RF_Scattered);
|
|
|
|
unsigned Type;
|
|
|
|
if (isScattered)
|
|
|
|
Type = (RE->Word0 >> 24) & 0xF;
|
|
|
|
else
|
|
|
|
Type = (RE->Word1 >> 28) & 0xF;
|
|
|
|
|
|
|
|
Result = false;
|
|
|
|
|
|
|
|
// On arches that use the generic relocations, GENERIC_RELOC_PAIR
|
|
|
|
// is always hidden.
|
|
|
|
if (Arch == Triple::x86 || Arch == Triple::arm) {
|
|
|
|
if (Type == macho::RIT_Pair) Result = true;
|
|
|
|
} else if (Arch == Triple::x86_64) {
|
|
|
|
// On x86_64, X86_64_RELOC_UNSIGNED is hidden only when it follows
|
|
|
|
// an X864_64_RELOC_SUBTRACTOR.
|
|
|
|
if (Type == macho::RIT_X86_64_Unsigned && Rel.d.a > 0) {
|
|
|
|
DataRefImpl RelPrev = Rel;
|
|
|
|
RelPrev.d.a--;
|
|
|
|
const RelocationEntry *REPrev = getRelocation(RelPrev);
|
|
|
|
|
|
|
|
unsigned PrevType = (REPrev->Word1 >> 28) & 0xF;
|
|
|
|
|
|
|
|
if (PrevType == macho::RIT_X86_64_Subtractor) Result = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::getSymbolFileOffset(DataRefImpl Symb,
|
|
|
|
uint64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
|
|
|
|
Res = Entry->Value;
|
|
|
|
if (Entry->SectionIndex) {
|
|
|
|
const Section *Sec = getSection(Sections[Entry->SectionIndex-1]);
|
|
|
|
Res += Sec->Offset - Sec->Address;
|
|
|
|
}
|
|
|
|
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
2013-04-09 14:49:08 +00:00
|
|
|
error_code
|
2013-04-10 15:33:44 +00:00
|
|
|
MachOObjectFile<MachOT>::sectionContainsSymbol(DataRefImpl Sec,
|
|
|
|
DataRefImpl Symb,
|
|
|
|
bool &Result) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
SymbolRef::Type ST;
|
|
|
|
getSymbolType(Symb, ST);
|
|
|
|
if (ST == SymbolRef::ST_Unknown) {
|
|
|
|
Result = false;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
uint64_t SectBegin, SectEnd;
|
|
|
|
getSectionAddress(Sec, SectBegin);
|
|
|
|
getSectionSize(Sec, SectEnd);
|
|
|
|
SectEnd += SectBegin;
|
|
|
|
|
|
|
|
const SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
|
|
|
|
uint64_t SymAddr= Entry->Value;
|
|
|
|
Result = (SymAddr >= SectBegin) && (SymAddr < SectEnd);
|
|
|
|
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
error_code MachOObjectFile<MachOT>::getSymbolAddress(DataRefImpl Symb,
|
|
|
|
uint64_t &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
const SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
|
|
|
|
Res = Entry->Value;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
error_code MachOObjectFile<MachOT>::getSymbolSize(DataRefImpl DRI,
|
2013-04-09 14:49:08 +00:00
|
|
|
uint64_t &Result) const {
|
|
|
|
uint32_t LoadCommandCount = getHeader()->NumLoadCommands;
|
|
|
|
uint64_t BeginOffset;
|
|
|
|
uint64_t EndOffset = 0;
|
|
|
|
uint8_t SectionIndex;
|
|
|
|
|
|
|
|
const SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
|
|
|
|
BeginOffset = Entry->Value;
|
|
|
|
SectionIndex = Entry->SectionIndex;
|
|
|
|
if (!SectionIndex) {
|
|
|
|
uint32_t flags = SymbolRef::SF_None;
|
|
|
|
getSymbolFlags(DRI, flags);
|
|
|
|
if (flags & SymbolRef::SF_Common)
|
|
|
|
Result = Entry->Value;
|
|
|
|
else
|
|
|
|
Result = UnknownAddressOrSize;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
// Unfortunately symbols are unsorted so we need to touch all
|
|
|
|
// symbols from load command
|
|
|
|
DRI.d.b = 0;
|
|
|
|
uint32_t Command = DRI.d.a;
|
|
|
|
while (Command == DRI.d.a) {
|
|
|
|
moveToNextSymbol(DRI);
|
|
|
|
if (DRI.d.a < LoadCommandCount) {
|
|
|
|
Entry = getSymbolTableEntry(DRI);
|
|
|
|
if (Entry->SectionIndex == SectionIndex && Entry->Value > BeginOffset)
|
|
|
|
if (!EndOffset || Entry->Value < EndOffset)
|
|
|
|
EndOffset = Entry->Value;
|
|
|
|
}
|
|
|
|
DRI.d.b++;
|
|
|
|
}
|
|
|
|
if (!EndOffset) {
|
|
|
|
uint64_t Size;
|
|
|
|
getSectionSize(Sections[SectionIndex-1], Size);
|
|
|
|
getSectionAddress(Sections[SectionIndex-1], EndOffset);
|
|
|
|
EndOffset += Size;
|
|
|
|
}
|
|
|
|
Result = EndOffset - BeginOffset;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
error_code MachOObjectFile<MachOT>::getSectionNext(DataRefImpl Sec,
|
|
|
|
SectionRef &Res) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
Sec.d.b++;
|
|
|
|
moveToNextSection(Sec);
|
|
|
|
Res = SectionRef(Sec, this);
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
section_iterator MachOObjectFile<MachOT>::begin_sections() const {
|
2013-04-09 14:49:08 +00:00
|
|
|
DataRefImpl DRI;
|
|
|
|
moveToNextSection(DRI);
|
|
|
|
return section_iterator(SectionRef(DRI, this));
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
template<class MachOT>
|
|
|
|
void MachOObjectFile<MachOT>::moveToNextSection(DataRefImpl &DRI) const {
|
2013-04-09 14:49:08 +00:00
|
|
|
uint32_t LoadCommandCount = getHeader()->NumLoadCommands;
|
|
|
|
while (DRI.d.a < LoadCommandCount) {
|
|
|
|
const LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
|
|
|
|
if (Command->Type == SegmentLoadType) {
|
|
|
|
const SegmentLoadCommand *SegmentLoadCmd =
|
|
|
|
reinterpret_cast<const SegmentLoadCommand*>(Command);
|
|
|
|
if (DRI.d.b < SegmentLoadCmd->NumSections)
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
DRI.d.a++;
|
|
|
|
DRI.d.b = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-04-10 15:33:44 +00:00
|
|
|
typedef MachOObjectFile<MachOType<support::little, false> >
|
|
|
|
MachOObjectFile32Le;
|
|
|
|
typedef MachOObjectFile<MachOType<support::little, true> >
|
|
|
|
MachOObjectFile64Le;
|
2011-10-11 17:32:27 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|