mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
4923eea4f6
Some targets require more than one relocation entry to perform a relocation. This change allows processRelocationRef to process more than one relocation entry at a time by passing the relocation iterator itself instead of just the relocation entry. Related to <rdar://problem/16199095> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204439 91177308-0d34-0410-b5e6-96231b3b80d8
275 lines
11 KiB
C++
275 lines
11 KiB
C++
//===- MachO.h - MachO object file implementation ---------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares the MachOObjectFile class, which implement the ObjectFile
|
|
// interface for MachO files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_OBJECT_MACHO_H
|
|
#define LLVM_OBJECT_MACHO_H
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/Object/ObjectFile.h"
|
|
#include "llvm/Support/MachO.h"
|
|
|
|
namespace llvm {
|
|
namespace object {
|
|
|
|
/// DiceRef - This is a value type class that represents a single
|
|
/// data in code entry in the table in a Mach-O object file.
|
|
class DiceRef {
|
|
DataRefImpl DicePimpl;
|
|
const ObjectFile *OwningObject;
|
|
|
|
public:
|
|
DiceRef() : OwningObject(NULL) { }
|
|
|
|
DiceRef(DataRefImpl DiceP, const ObjectFile *Owner);
|
|
|
|
bool operator==(const DiceRef &Other) const;
|
|
bool operator<(const DiceRef &Other) const;
|
|
|
|
void moveNext();
|
|
|
|
error_code getOffset(uint32_t &Result) const;
|
|
error_code getLength(uint16_t &Result) const;
|
|
error_code getKind(uint16_t &Result) const;
|
|
|
|
DataRefImpl getRawDataRefImpl() const;
|
|
const ObjectFile *getObjectFile() const;
|
|
};
|
|
typedef content_iterator<DiceRef> dice_iterator;
|
|
|
|
class MachOObjectFile : public ObjectFile {
|
|
public:
|
|
struct LoadCommandInfo {
|
|
const char *Ptr; // Where in memory the load command is.
|
|
MachO::load_command C; // The command itself.
|
|
};
|
|
|
|
MachOObjectFile(MemoryBuffer *Object, bool IsLittleEndian, bool Is64Bits,
|
|
error_code &EC, bool BufferOwned = true);
|
|
|
|
void moveSymbolNext(DataRefImpl &Symb) const override;
|
|
error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const override;
|
|
error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const override;
|
|
error_code getSymbolFileOffset(DataRefImpl Symb,
|
|
uint64_t &Res) const override;
|
|
error_code getSymbolAlignment(DataRefImpl Symb, uint32_t &Res) const override;
|
|
error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const override;
|
|
error_code getSymbolType(DataRefImpl Symb,
|
|
SymbolRef::Type &Res) const override;
|
|
uint32_t getSymbolFlags(DataRefImpl Symb) const override;
|
|
error_code getSymbolSection(DataRefImpl Symb,
|
|
section_iterator &Res) const override;
|
|
error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const override;
|
|
|
|
void moveSectionNext(DataRefImpl &Sec) const override;
|
|
error_code getSectionName(DataRefImpl Sec, StringRef &Res) const override;
|
|
error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const override;
|
|
error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const override;
|
|
error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const override;
|
|
error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const override;
|
|
error_code isSectionText(DataRefImpl Sec, bool &Res) const override;
|
|
error_code isSectionData(DataRefImpl Sec, bool &Res) const override;
|
|
error_code isSectionBSS(DataRefImpl Sec, bool &Res) const override;
|
|
error_code isSectionRequiredForExecution(DataRefImpl Sec,
|
|
bool &Res) const override;
|
|
error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const override;
|
|
error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const override;
|
|
error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const override;
|
|
error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
|
|
bool &Result) const override;
|
|
relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
|
|
relocation_iterator section_rel_end(DataRefImpl Sec) const override;
|
|
bool section_rel_empty(DataRefImpl Sec) const override;
|
|
|
|
void moveRelocationNext(DataRefImpl &Rel) const override;
|
|
error_code getRelocationAddress(DataRefImpl Rel,
|
|
uint64_t &Res) const override;
|
|
error_code getRelocationOffset(DataRefImpl Rel, uint64_t &Res) const override;
|
|
symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
|
|
error_code getRelocationType(DataRefImpl Rel, uint64_t &Res) const override;
|
|
error_code getRelocationTypeName(DataRefImpl Rel,
|
|
SmallVectorImpl<char> &Result) const override;
|
|
error_code getRelocationValueString(DataRefImpl Rel,
|
|
SmallVectorImpl<char> &Result) const override;
|
|
error_code getRelocationHidden(DataRefImpl Rel, bool &Result) const override;
|
|
|
|
error_code getLibraryNext(DataRefImpl LibData,
|
|
LibraryRef &Res) const override;
|
|
error_code getLibraryPath(DataRefImpl LibData, StringRef &Res) const override;
|
|
|
|
// TODO: Would be useful to have an iterator based version
|
|
// of the load command interface too.
|
|
|
|
basic_symbol_iterator symbol_begin_impl() const override;
|
|
basic_symbol_iterator symbol_end_impl() const override;
|
|
|
|
section_iterator section_begin() const override;
|
|
section_iterator section_end() const override;
|
|
|
|
library_iterator needed_library_begin() const override;
|
|
library_iterator needed_library_end() const override;
|
|
|
|
uint8_t getBytesInAddress() const override;
|
|
|
|
StringRef getFileFormatName() const override;
|
|
unsigned getArch() const override;
|
|
|
|
StringRef getLoadName() const override;
|
|
|
|
relocation_iterator section_rel_begin(unsigned Index) const;
|
|
relocation_iterator section_rel_end(unsigned Index) const;
|
|
|
|
dice_iterator begin_dices() const;
|
|
dice_iterator end_dices() const;
|
|
|
|
// In a MachO file, sections have a segment name. This is used in the .o
|
|
// files. They have a single segment, but this field specifies which segment
|
|
// a section should be put in in the final object.
|
|
StringRef getSectionFinalSegmentName(DataRefImpl Sec) const;
|
|
|
|
// Names are stored as 16 bytes. These returns the raw 16 bytes without
|
|
// interpreting them as a C string.
|
|
ArrayRef<char> getSectionRawName(DataRefImpl Sec) const;
|
|
ArrayRef<char> getSectionRawFinalSegmentName(DataRefImpl Sec) const;
|
|
|
|
// MachO specific Info about relocations.
|
|
bool isRelocationScattered(const MachO::any_relocation_info &RE) const;
|
|
unsigned getPlainRelocationSymbolNum(
|
|
const MachO::any_relocation_info &RE) const;
|
|
bool getPlainRelocationExternal(const MachO::any_relocation_info &RE) const;
|
|
bool getScatteredRelocationScattered(
|
|
const MachO::any_relocation_info &RE) const;
|
|
uint32_t getScatteredRelocationValue(
|
|
const MachO::any_relocation_info &RE) const;
|
|
unsigned getAnyRelocationAddress(const MachO::any_relocation_info &RE) const;
|
|
unsigned getAnyRelocationPCRel(const MachO::any_relocation_info &RE) const;
|
|
unsigned getAnyRelocationLength(const MachO::any_relocation_info &RE) const;
|
|
unsigned getAnyRelocationType(const MachO::any_relocation_info &RE) const;
|
|
SectionRef getRelocationSection(const MachO::any_relocation_info &RE) const;
|
|
|
|
// Walk load commands.
|
|
LoadCommandInfo getFirstLoadCommandInfo() const;
|
|
LoadCommandInfo getNextLoadCommandInfo(const LoadCommandInfo &L) const;
|
|
|
|
// MachO specific structures.
|
|
MachO::section getSection(DataRefImpl DRI) const;
|
|
MachO::section_64 getSection64(DataRefImpl DRI) const;
|
|
MachO::section getSection(const LoadCommandInfo &L, unsigned Index) const;
|
|
MachO::section_64 getSection64(const LoadCommandInfo &L,unsigned Index) const;
|
|
MachO::nlist getSymbolTableEntry(DataRefImpl DRI) const;
|
|
MachO::nlist_64 getSymbol64TableEntry(DataRefImpl DRI) const;
|
|
|
|
MachO::linkedit_data_command
|
|
getLinkeditDataLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::segment_command
|
|
getSegmentLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::segment_command_64
|
|
getSegment64LoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::linker_options_command
|
|
getLinkerOptionsLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::version_min_command
|
|
getVersionMinLoadCommand(const LoadCommandInfo &L) const;
|
|
|
|
MachO::any_relocation_info getRelocation(DataRefImpl Rel) const;
|
|
MachO::data_in_code_entry getDice(DataRefImpl Rel) const;
|
|
MachO::mach_header getHeader() const;
|
|
MachO::mach_header_64 getHeader64() const;
|
|
uint32_t
|
|
getIndirectSymbolTableEntry(const MachO::dysymtab_command &DLC,
|
|
unsigned Index) const;
|
|
MachO::data_in_code_entry getDataInCodeTableEntry(uint32_t DataOffset,
|
|
unsigned Index) const;
|
|
MachO::symtab_command getSymtabLoadCommand() const;
|
|
MachO::dysymtab_command getDysymtabLoadCommand() const;
|
|
MachO::linkedit_data_command getDataInCodeLoadCommand() const;
|
|
|
|
StringRef getStringTableData() const;
|
|
bool is64Bit() const;
|
|
void ReadULEB128s(uint64_t Index, SmallVectorImpl<uint64_t> &Out) const;
|
|
|
|
static Triple::ArchType getArch(uint32_t CPUType);
|
|
|
|
static bool classof(const Binary *v) {
|
|
return v->isMachO();
|
|
}
|
|
|
|
private:
|
|
typedef SmallVector<const char*, 1> SectionList;
|
|
SectionList Sections;
|
|
const char *SymtabLoadCmd;
|
|
const char *DysymtabLoadCmd;
|
|
const char *DataInCodeLoadCmd;
|
|
};
|
|
|
|
/// DiceRef
|
|
inline DiceRef::DiceRef(DataRefImpl DiceP, const ObjectFile *Owner)
|
|
: DicePimpl(DiceP) , OwningObject(Owner) {}
|
|
|
|
inline bool DiceRef::operator==(const DiceRef &Other) const {
|
|
return DicePimpl == Other.DicePimpl;
|
|
}
|
|
|
|
inline bool DiceRef::operator<(const DiceRef &Other) const {
|
|
return DicePimpl < Other.DicePimpl;
|
|
}
|
|
|
|
inline void DiceRef::moveNext() {
|
|
const MachO::data_in_code_entry *P =
|
|
reinterpret_cast<const MachO::data_in_code_entry *>(DicePimpl.p);
|
|
DicePimpl.p = reinterpret_cast<uintptr_t>(P + 1);
|
|
}
|
|
|
|
// Since a Mach-O data in code reference, a DiceRef, can only be created when
|
|
// the OwningObject ObjectFile is a MachOObjectFile a static_cast<> is used for
|
|
// the methods that get the values of the fields of the reference.
|
|
|
|
inline error_code DiceRef::getOffset(uint32_t &Result) const {
|
|
const MachOObjectFile *MachOOF =
|
|
static_cast<const MachOObjectFile *>(OwningObject);
|
|
MachO::data_in_code_entry Dice = MachOOF->getDice(DicePimpl);
|
|
Result = Dice.offset;
|
|
return object_error::success;
|
|
}
|
|
|
|
inline error_code DiceRef::getLength(uint16_t &Result) const {
|
|
const MachOObjectFile *MachOOF =
|
|
static_cast<const MachOObjectFile *>(OwningObject);
|
|
MachO::data_in_code_entry Dice = MachOOF->getDice(DicePimpl);
|
|
Result = Dice.length;
|
|
return object_error::success;
|
|
}
|
|
|
|
inline error_code DiceRef::getKind(uint16_t &Result) const {
|
|
const MachOObjectFile *MachOOF =
|
|
static_cast<const MachOObjectFile *>(OwningObject);
|
|
MachO::data_in_code_entry Dice = MachOOF->getDice(DicePimpl);
|
|
Result = Dice.kind;
|
|
return object_error::success;
|
|
}
|
|
|
|
inline DataRefImpl DiceRef::getRawDataRefImpl() const {
|
|
return DicePimpl;
|
|
}
|
|
|
|
inline const ObjectFile *DiceRef::getObjectFile() const {
|
|
return OwningObject;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|