MachOFileAbstraction.hpp [plain text]
/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
* Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef __MACH_O_FILE_ABSTRACTION__
#define __MACH_O_FILE_ABSTRACTION__
#include <mach-o/loader.h>
#include <mach-o/nlist.h>
#include <mach-o/reloc.h>
#include <mach/machine.h>
// suport older versions of mach-o/loader.h
#ifndef LC_UUID
#define LC_UUID 0x1b
struct uuid_command {
uint32_t cmd; /* LC_UUID */
uint32_t cmdsize; /* sizeof(struct uuid_command) */
uint8_t uuid[16]; /* the 128-bit uuid */
};
#endif
#ifndef S_16BYTE_LITERALS
#define S_16BYTE_LITERALS 0xE
#endif
#ifndef CPU_SUBTYPE_ARM_V5TEJ
#define CPU_SUBTYPE_ARM_V5TEJ ((cpu_subtype_t) 7)
#endif
#ifndef CPU_SUBTYPE_ARM_XSCALE
#define CPU_SUBTYPE_ARM_XSCALE ((cpu_subtype_t) 8)
#endif
#ifndef CPU_SUBTYPE_ARM_V7
#define CPU_SUBTYPE_ARM_V7 ((cpu_subtype_t) 9)
#endif
#ifndef CPU_SUBTYPE_ARM_V7F
#define CPU_SUBTYPE_ARM_V7F ((cpu_subtype_t) 10)
#endif
#ifndef CPU_SUBTYPE_ARM_V7K
#define CPU_SUBTYPE_ARM_V7K ((cpu_subtype_t) 12)
#endif
#ifndef CPU_SUBTYPE_ARM_V7S
#define CPU_SUBTYPE_ARM_V7S ((cpu_subtype_t) 11)
#endif
#ifndef CPU_SUBTYPE_ARM64_ALL
#define CPU_SUBTYPE_ARM64_ALL ((cpu_subtype_t) 0)
#endif
#ifndef CPU_TYPE_ARM64
#define CPU_TYPE_ARM64 ((cpu_type_t) (CPU_TYPE_ARM | CPU_ARCH_ABI64))
#endif
#define ARM64_RELOC_UNSIGNED 0 // for pointers
#ifndef LC_LOAD_UPWARD_DYLIB
#define LC_LOAD_UPWARD_DYLIB (0x23|LC_REQ_DYLD) /* load of dylib whose initializers run later */
#endif
#ifndef EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER
#define EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER 0x10
#endif
#ifndef EXPORT_SYMBOL_FLAGS_REEXPORT
#define EXPORT_SYMBOL_FLAGS_REEXPORT 0x08
#endif
#ifndef LC_FUNCTION_STARTS
#define LC_FUNCTION_STARTS 0x26
#endif
#ifndef LC_DATA_IN_CODE
#define LC_DATA_IN_CODE 0x29
#endif
#ifndef LC_DYLIB_CODE_SIGN_DRS
#define LC_DYLIB_CODE_SIGN_DRS 0x2B
#endif
#ifndef CPU_SUBTYPE_X86_64_H
#define CPU_SUBTYPE_X86_64_H ((cpu_subtype_t) 8)
#endif
#define DYLD_CACHE_ADJ_V2_FORMAT 0x7F
#define DYLD_CACHE_ADJ_V2_POINTER_32 0x01
#define DYLD_CACHE_ADJ_V2_POINTER_64 0x02
#define DYLD_CACHE_ADJ_V2_DELTA_32 0x03
#define DYLD_CACHE_ADJ_V2_DELTA_64 0x04
#define DYLD_CACHE_ADJ_V2_ARM64_ADRP 0x05
#define DYLD_CACHE_ADJ_V2_ARM64_OFF12 0x06
#define DYLD_CACHE_ADJ_V2_ARM64_BR26 0x07
#define DYLD_CACHE_ADJ_V2_ARM_MOVW_MOVT 0x08
#define DYLD_CACHE_ADJ_V2_ARM_BR24 0x09
#define DYLD_CACHE_ADJ_V2_THUMB_MOVW_MOVT 0x0A
#define DYLD_CACHE_ADJ_V2_THUMB_BR22 0x0B
#define DYLD_CACHE_ADJ_V2_IMAGE_OFF_32 0x0C
#include "FileAbstraction.hpp"
#include "Architectures.hpp"
// utility to pair together a cpu-type and cpu-sub-type
struct ArchPair
{
uint32_t arch;
uint32_t subtype;
ArchPair(uint32_t cputype, uint32_t cpusubtype) : arch(cputype), subtype(cpusubtype) {}
bool operator<(const ArchPair& other) const {
if ( this->arch != other.arch )
return (this->arch < other.arch);
return (this->subtype < other.subtype);
}
};
//
// This abstraction layer makes every mach-o file look like a 64-bit mach-o file with native endianness
//
//
// mach-o load command
//
template <typename P>
class macho_load_command {
public:
uint32_t cmd() const INLINE { return E::get32(command.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(command.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(command.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(command.cmdsize, value); }
typedef typename P::E E;
private:
load_command command;
};
//
// mach-o segment load command
//
template <typename P> struct macho_segment_content {};
template <> struct macho_segment_content<Pointer32<BigEndian> > { segment_command fields; enum { CMD = LC_SEGMENT }; };
template <> struct macho_segment_content<Pointer64<BigEndian> > { segment_command_64 fields; enum { CMD = LC_SEGMENT_64 }; };
template <> struct macho_segment_content<Pointer32<LittleEndian> > { segment_command fields; enum { CMD = LC_SEGMENT }; };
template <> struct macho_segment_content<Pointer64<LittleEndian> > { segment_command_64 fields; enum { CMD = LC_SEGMENT_64 }; };
template <typename P>
class macho_segment_command {
public:
uint32_t cmd() const INLINE { return E::get32(segment.fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(segment.fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(segment.fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(segment.fields.cmdsize, value); }
const char* segname() const INLINE { return segment.fields.segname; }
void set_segname(const char* value) INLINE { strncpy(segment.fields.segname, value, 16); }
uint64_t vmaddr() const INLINE { return P::getP(segment.fields.vmaddr); }
void set_vmaddr(uint64_t value) INLINE { P::setP(segment.fields.vmaddr, value); }
uint64_t vmsize() const INLINE { return P::getP(segment.fields.vmsize); }
void set_vmsize(uint64_t value) INLINE { P::setP(segment.fields.vmsize, value); }
uint64_t fileoff() const INLINE { return P::getP(segment.fields.fileoff); }
void set_fileoff(uint64_t value) INLINE { P::setP(segment.fields.fileoff, value); }
uint64_t filesize() const INLINE { return P::getP(segment.fields.filesize); }
void set_filesize(uint64_t value) INLINE { P::setP(segment.fields.filesize, value); }
uint32_t maxprot() const INLINE { return E::get32(segment.fields.maxprot); }
void set_maxprot(uint32_t value) INLINE { E::set32((uint32_t&)segment.fields.maxprot, value); }
uint32_t initprot() const INLINE { return E::get32(segment.fields.initprot); }
void set_initprot(uint32_t value) INLINE { E::set32((uint32_t&)segment.fields.initprot, value); }
uint32_t nsects() const INLINE { return E::get32(segment.fields.nsects); }
void set_nsects(uint32_t value) INLINE { E::set32(segment.fields.nsects, value); }
uint32_t flags() const INLINE { return E::get32(segment.fields.flags); }
void set_flags(uint32_t value) INLINE { E::set32(segment.fields.flags, value); }
enum {
CMD = macho_segment_content<P>::CMD
};
typedef typename P::E E;
private:
macho_segment_content<P> segment;
};
//
// mach-o section
//
template <typename P> struct macho_section_content {};
template <> struct macho_section_content<Pointer32<BigEndian> > { section fields; };
template <> struct macho_section_content<Pointer64<BigEndian> > { section_64 fields; };
template <> struct macho_section_content<Pointer32<LittleEndian> > { section fields; };
template <> struct macho_section_content<Pointer64<LittleEndian> > { section_64 fields; };
template <typename P>
class macho_section {
public:
const char* sectname() const INLINE { return section.fields.sectname; }
void set_sectname(const char* value) INLINE { strncpy(section.fields.sectname, value, 16); }
const char* segname() const INLINE { return section.fields.segname; }
void set_segname(const char* value) INLINE { strncpy(section.fields.segname, value, 16); }
uint64_t addr() const INLINE { return P::getP(section.fields.addr); }
void set_addr(uint64_t value) INLINE { P::setP(section.fields.addr, value); }
uint64_t size() const INLINE { return P::getP(section.fields.size); }
void set_size(uint64_t value) INLINE { P::setP(section.fields.size, value); }
uint32_t offset() const INLINE { return E::get32(section.fields.offset); }
void set_offset(uint32_t value) INLINE { E::set32(section.fields.offset, value); }
uint32_t align() const INLINE { return E::get32(section.fields.align); }
void set_align(uint32_t value) INLINE { E::set32(section.fields.align, value); }
uint32_t reloff() const INLINE { return E::get32(section.fields.reloff); }
void set_reloff(uint32_t value) INLINE { E::set32(section.fields.reloff, value); }
uint32_t nreloc() const INLINE { return E::get32(section.fields.nreloc); }
void set_nreloc(uint32_t value) INLINE { E::set32(section.fields.nreloc, value); }
uint32_t flags() const INLINE { return E::get32(section.fields.flags); }
void set_flags(uint32_t value) INLINE { E::set32(section.fields.flags, value); }
uint32_t reserved1() const INLINE { return E::get32(section.fields.reserved1); }
void set_reserved1(uint32_t value) INLINE { E::set32(section.fields.reserved1, value); }
uint32_t reserved2() const INLINE { return E::get32(section.fields.reserved2); }
void set_reserved2(uint32_t value) INLINE { E::set32(section.fields.reserved2, value); }
typedef typename P::E E;
private:
macho_section_content<P> section;
};
//
// mach-o dylib load command
//
template <typename P>
class macho_dylib_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t name_offset() const INLINE { return E::get32(fields.dylib.name.offset); }
void set_name_offset(uint32_t value) INLINE { E::set32(fields.dylib.name.offset, value); }
uint32_t timestamp() const INLINE { return E::get32(fields.dylib.timestamp); }
void set_timestamp(uint32_t value) INLINE { E::set32(fields.dylib.timestamp, value); }
uint32_t current_version() const INLINE { return E::get32(fields.dylib.current_version); }
void set_current_version(uint32_t value) INLINE { E::set32(fields.dylib.current_version, value); }
uint32_t compatibility_version() const INLINE { return E::get32(fields.dylib.compatibility_version); }
void set_compatibility_version(uint32_t value) INLINE { E::set32(fields.dylib.compatibility_version, value); }
const char* name() const INLINE { return (const char*)&fields + name_offset(); }
void set_name_offset() INLINE { set_name_offset(sizeof(fields)); }
typedef typename P::E E;
private:
dylib_command fields;
};
//
// mach-o dylinker load command
//
template <typename P>
class macho_dylinker_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t name_offset() const INLINE { return E::get32(fields.name.offset); }
void set_name_offset(uint32_t value) INLINE { E::set32(fields.name.offset, value); }
const char* name() const INLINE { return (const char*)&fields + name_offset(); }
void set_name_offset() INLINE { set_name_offset(sizeof(fields)); }
typedef typename P::E E;
private:
dylinker_command fields;
};
//
// mach-o sub_framework load command
//
template <typename P>
class macho_sub_framework_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t umbrella_offset() const INLINE { return E::get32(fields.umbrella.offset); }
void set_umbrella_offset(uint32_t value) INLINE { E::set32(fields.umbrella.offset, value); }
const char* umbrella() const INLINE { return (const char*)&fields + umbrella_offset(); }
void set_umbrella_offset() INLINE { set_umbrella_offset(sizeof(fields)); }
typedef typename P::E E;
private:
sub_framework_command fields;
};
//
// mach-o sub_client load command
//
template <typename P>
class macho_sub_client_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t client_offset() const INLINE { return E::get32(fields.client.offset); }
void set_client_offset(uint32_t value) INLINE { E::set32(fields.client.offset, value); }
const char* client() const INLINE { return (const char*)&fields + client_offset(); }
void set_client_offset() INLINE { set_client_offset(sizeof(fields)); }
typedef typename P::E E;
private:
sub_client_command fields;
};
//
// mach-o sub_umbrella load command
//
template <typename P>
class macho_sub_umbrella_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t sub_umbrella_offset() const INLINE { return E::get32(fields.sub_umbrella.offset); }
void set_sub_umbrella_offset(uint32_t value) INLINE { E::set32(fields.sub_umbrella.offset, value); }
const char* sub_umbrella() const INLINE { return (const char*)&fields + sub_umbrella_offset(); }
void set_sub_umbrella_offset() INLINE { set_sub_umbrella_offset(sizeof(fields)); }
typedef typename P::E E;
private:
sub_umbrella_command fields;
};
//
// mach-o sub_library load command
//
template <typename P>
class macho_sub_library_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t sub_library_offset() const INLINE { return E::get32(fields.sub_library.offset); }
void set_sub_library_offset(uint32_t value) INLINE { E::set32(fields.sub_library.offset, value); }
const char* sub_library() const INLINE { return (const char*)&fields + sub_library_offset(); }
void set_sub_library_offset() INLINE { set_sub_library_offset(sizeof(fields)); }
typedef typename P::E E;
private:
sub_library_command fields;
};
//
// mach-o uuid load command
//
template <typename P>
class macho_uuid_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
const uint8_t* uuid() const INLINE { return fields.uuid; }
void set_uuid(uint8_t value[16]) INLINE { memcpy(&fields.uuid, value, 16); }
typedef typename P::E E;
private:
uuid_command fields;
};
//
// mach-o routines load command
//
template <typename P> struct macho_routines_content {};
template <> struct macho_routines_content<Pointer32<BigEndian> > { routines_command fields; enum { CMD = LC_ROUTINES }; };
template <> struct macho_routines_content<Pointer64<BigEndian> > { routines_command_64 fields; enum { CMD = LC_ROUTINES_64 }; };
template <> struct macho_routines_content<Pointer32<LittleEndian> > { routines_command fields; enum { CMD = LC_ROUTINES }; };
template <> struct macho_routines_content<Pointer64<LittleEndian> > { routines_command_64 fields; enum { CMD = LC_ROUTINES_64 }; };
template <typename P>
class macho_routines_command {
public:
uint32_t cmd() const INLINE { return E::get32(routines.fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(routines.fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(routines.fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(routines.fields.cmdsize, value); }
uint64_t init_address() const INLINE { return P::getP(routines.fields.init_address); }
void set_init_address(uint64_t value) INLINE { P::setP(routines.fields.init_address, value); }
uint64_t init_module() const INLINE { return P::getP(routines.fields.init_module); }
void set_init_module(uint64_t value) INLINE { P::setP(routines.fields.init_module, value); }
uint64_t reserved1() const INLINE { return P::getP(routines.fields.reserved1); }
void set_reserved1(uint64_t value) INLINE { P::setP(routines.fields.reserved1, value); }
uint64_t reserved2() const INLINE { return P::getP(routines.fields.reserved2); }
void set_reserved2(uint64_t value) INLINE { P::setP(routines.fields.reserved2, value); }
uint64_t reserved3() const INLINE { return P::getP(routines.fields.reserved3); }
void set_reserved3(uint64_t value) INLINE { P::setP(routines.fields.reserved3, value); }
uint64_t reserved4() const INLINE { return P::getP(routines.fields.reserved4); }
void set_reserved4(uint64_t value) INLINE { P::setP(routines.fields.reserved4, value); }
uint64_t reserved5() const INLINE { return P::getP(routines.fields.reserved5); }
void set_reserved5(uint64_t value) INLINE { P::setP(routines.fields.reserved5, value); }
uint64_t reserved6() const INLINE { return P::getP(routines.fields.reserved6); }
void set_reserved6(uint64_t value) INLINE { P::setP(routines.fields.reserved6, value); }
typedef typename P::E E;
enum {
CMD = macho_routines_content<P>::CMD
};
private:
macho_routines_content<P> routines;
};
//
// mach-o symbol table load command
//
template <typename P>
class macho_symtab_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t symoff() const INLINE { return E::get32(fields.symoff); }
void set_symoff(uint32_t value) INLINE { E::set32(fields.symoff, value); }
uint32_t nsyms() const INLINE { return E::get32(fields.nsyms); }
void set_nsyms(uint32_t value) INLINE { E::set32(fields.nsyms, value); }
uint32_t stroff() const INLINE { return E::get32(fields.stroff); }
void set_stroff(uint32_t value) INLINE { E::set32(fields.stroff, value); }
uint32_t strsize() const INLINE { return E::get32(fields.strsize); }
void set_strsize(uint32_t value) INLINE { E::set32(fields.strsize, value); }
typedef typename P::E E;
private:
symtab_command fields;
};
//
// mach-o dynamic symbol table load command
//
template <typename P>
class macho_dysymtab_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t ilocalsym() const INLINE { return E::get32(fields.ilocalsym); }
void set_ilocalsym(uint32_t value) INLINE { E::set32(fields.ilocalsym, value); }
uint32_t nlocalsym() const INLINE { return E::get32(fields.nlocalsym); }
void set_nlocalsym(uint32_t value) INLINE { E::set32(fields.nlocalsym, value); }
uint32_t iextdefsym() const INLINE { return E::get32(fields.iextdefsym); }
void set_iextdefsym(uint32_t value) INLINE { E::set32(fields.iextdefsym, value); }
uint32_t nextdefsym() const INLINE { return E::get32(fields.nextdefsym); }
void set_nextdefsym(uint32_t value) INLINE { E::set32(fields.nextdefsym, value); }
uint32_t iundefsym() const INLINE { return E::get32(fields.iundefsym); }
void set_iundefsym(uint32_t value) INLINE { E::set32(fields.iundefsym, value); }
uint32_t nundefsym() const INLINE { return E::get32(fields.nundefsym); }
void set_nundefsym(uint32_t value) INLINE { E::set32(fields.nundefsym, value); }
uint32_t tocoff() const INLINE { return E::get32(fields.tocoff); }
void set_tocoff(uint32_t value) INLINE { E::set32(fields.tocoff, value); }
uint32_t ntoc() const INLINE { return E::get32(fields.ntoc); }
void set_ntoc(uint32_t value) INLINE { E::set32(fields.ntoc, value); }
uint32_t modtaboff() const INLINE { return E::get32(fields.modtaboff); }
void set_modtaboff(uint32_t value) INLINE { E::set32(fields.modtaboff, value); }
uint32_t nmodtab() const INLINE { return E::get32(fields.nmodtab); }
void set_nmodtab(uint32_t value) INLINE { E::set32(fields.nmodtab, value); }
uint32_t extrefsymoff() const INLINE { return E::get32(fields.extrefsymoff); }
void set_extrefsymoff(uint32_t value) INLINE { E::set32(fields.extrefsymoff, value); }
uint32_t nextrefsyms() const INLINE { return E::get32(fields.nextrefsyms); }
void set_nextrefsyms(uint32_t value) INLINE { E::set32(fields.nextrefsyms, value); }
uint32_t indirectsymoff() const INLINE { return E::get32(fields.indirectsymoff); }
void set_indirectsymoff(uint32_t value) INLINE { E::set32(fields.indirectsymoff, value); }
uint32_t nindirectsyms() const INLINE { return E::get32(fields.nindirectsyms); }
void set_nindirectsyms(uint32_t value) INLINE { E::set32(fields.nindirectsyms, value); }
uint32_t extreloff() const INLINE { return E::get32(fields.extreloff); }
void set_extreloff(uint32_t value) INLINE { E::set32(fields.extreloff, value); }
uint32_t nextrel() const INLINE { return E::get32(fields.nextrel); }
void set_nextrel(uint32_t value) INLINE { E::set32(fields.nextrel, value); }
uint32_t locreloff() const INLINE { return E::get32(fields.locreloff); }
void set_locreloff(uint32_t value) INLINE { E::set32(fields.locreloff, value); }
uint32_t nlocrel() const INLINE { return E::get32(fields.nlocrel); }
void set_nlocrel(uint32_t value) INLINE { E::set32(fields.nlocrel, value); }
typedef typename P::E E;
private:
dysymtab_command fields;
};
//
// mach-o two-level hints load command
//
template <typename P>
class macho_twolevel_hints_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t offset() const INLINE { return E::get32(fields.offset); }
void set_offset(uint32_t value) INLINE { E::set32(fields.offset, value); }
uint32_t nhints() const INLINE { return E::get32(fields.nhints); }
void set_nhints(uint32_t value) INLINE { E::set32(fields.nhints, value); }
typedef typename P::E E;
private:
twolevel_hints_command fields;
};
//
// mach-o threads load command
//
template <typename P>
class macho_thread_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t flavor() const INLINE { return E::get32(fields_flavor); }
void set_flavor(uint32_t value) INLINE { E::set32(fields_flavor, value); }
uint32_t count() const INLINE { return E::get32(fields_count); }
void set_count(uint32_t value) INLINE { E::set32(fields_count, value); }
uint64_t thread_register(uint32_t index) const INLINE { return P::getP(thread_registers[index]); }
void set_thread_register(uint32_t index, uint64_t value) INLINE { P::setP(thread_registers[index], value); }
typedef typename P::E E;
typedef typename P::uint_t pint_t;
private:
struct thread_command fields;
uint32_t fields_flavor;
uint32_t fields_count;
pint_t thread_registers[1];
};
//
// mach-o misc data
//
template <typename P>
class macho_linkedit_data_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t dataoff() const INLINE { return E::get32(fields.dataoff); }
void set_dataoff(uint32_t value) INLINE { E::set32(fields.dataoff, value); }
uint32_t datasize() const INLINE { return E::get32(fields.datasize); }
void set_datasize(uint32_t value)INLINE { E::set32(fields.datasize, value); }
typedef typename P::E E;
private:
linkedit_data_command fields;
};
//
// mach-o symbol table entry
//
template <typename P> struct macho_nlist_content {};
template <> struct macho_nlist_content<Pointer32<BigEndian> > { struct nlist fields; };
template <> struct macho_nlist_content<Pointer64<BigEndian> > { struct nlist_64 fields; };
template <> struct macho_nlist_content<Pointer32<LittleEndian> > { struct nlist fields; };
template <> struct macho_nlist_content<Pointer64<LittleEndian> > { struct nlist_64 fields; };
template <typename P>
class macho_nlist {
public:
uint32_t n_strx() const INLINE { return E::get32(entry.fields.n_un.n_strx); }
void set_n_strx(uint32_t value) INLINE { E::set32((uint32_t&)entry.fields.n_un.n_strx, value); }
uint8_t n_type() const INLINE { return entry.fields.n_type; }
void set_n_type(uint8_t value) INLINE { entry.fields.n_type = value; }
uint8_t n_sect() const INLINE { return entry.fields.n_sect; }
void set_n_sect(uint8_t value) INLINE { entry.fields.n_sect = value; }
uint16_t n_desc() const INLINE { return E::get16(entry.fields.n_desc); }
void set_n_desc(uint16_t value) INLINE { E::set16((uint16_t&)entry.fields.n_desc, value); }
uint64_t n_value() const INLINE { return P::getP(entry.fields.n_value); }
void set_n_value(uint64_t value) INLINE { P::setP(entry.fields.n_value, value); }
typedef typename P::E E;
private:
macho_nlist_content<P> entry;
};
//
// mach-o relocation info
//
template <typename P>
class macho_relocation_info {
public:
uint32_t r_address() const INLINE { return E::get32(address); }
void set_r_address(uint32_t value) INLINE { E::set32(address, value); }
uint32_t r_symbolnum() const INLINE { return E::getBits(other, 0, 24); }
void set_r_symbolnum(uint32_t value) INLINE { E::setBits(other, value, 0, 24); }
bool r_pcrel() const INLINE { return E::getBits(other, 24, 1); }
void set_r_pcrel(bool value) INLINE { E::setBits(other, value, 24, 1); }
uint8_t r_length() const INLINE { return E::getBits(other, 25, 2); }
void set_r_length(uint8_t value) INLINE { E::setBits(other, value, 25, 2); }
bool r_extern() const INLINE { return E::getBits(other, 27, 1); }
void set_r_extern(bool value) INLINE { E::setBits(other, value, 27, 1); }
uint8_t r_type() const INLINE { return E::getBits(other, 28, 4); }
void set_r_type(uint8_t value) INLINE { E::setBits(other, value, 28, 4); }
void set_r_length() INLINE { set_r_length((sizeof(typename P::uint_t)==8) ? 3 : 2); }
typedef typename P::E E;
private:
uint32_t address;
uint32_t other;
};
//
// mach-o scattered relocation info
// The bit fields are always in big-endian order (see mach-o/reloc.h)
//
template <typename P>
class macho_scattered_relocation_info {
public:
bool r_scattered() const INLINE { return BigEndian::getBitsRaw(E::get32(other), 0, 1); }
void set_r_scattered(bool x) INLINE { uint32_t temp = E::get32(other); BigEndian::setBitsRaw(temp, x, 0, 1); E::set32(other, temp); }
bool r_pcrel() const INLINE { return BigEndian::getBitsRaw(E::get32(other), 1, 1); }
void set_r_pcrel(bool x) INLINE { uint32_t temp = E::get32(other); BigEndian::setBitsRaw(temp, x, 1, 1); E::set32(other, temp); }
uint8_t r_length() const INLINE { return BigEndian::getBitsRaw(E::get32(other), 2, 2); }
void set_r_length(uint8_t x) INLINE { uint32_t temp = E::get32(other); BigEndian::setBitsRaw(temp, x, 2, 2); E::set32(other, temp); }
uint8_t r_type() const INLINE { return BigEndian::getBitsRaw(E::get32(other), 4, 4); }
void set_r_type(uint8_t x) INLINE { uint32_t temp = E::get32(other); BigEndian::setBitsRaw(temp, x, 4, 4); E::set32(other, temp); }
uint32_t r_address() const INLINE { return BigEndian::getBitsRaw(E::get32(other), 8, 24); }
void set_r_address(uint32_t x) INLINE { uint32_t temp = E::get32(other); BigEndian::setBitsRaw(temp, x, 8, 24); E::set32(other, temp); }
uint32_t r_value() const INLINE { return E::get32(value); }
void set_r_value(uint32_t x) INLINE { E::set32(value, x); }
uint32_t r_other() const INLINE { return other; }
typedef typename P::E E;
private:
uint32_t other;
uint32_t value;
};
//
// mach-o file header
//
template <typename P> struct macho_header_content {};
template <> struct macho_header_content<Pointer32<BigEndian> > { mach_header fields; };
template <> struct macho_header_content<Pointer64<BigEndian> > { mach_header_64 fields; };
template <> struct macho_header_content<Pointer32<LittleEndian> > { mach_header fields; };
template <> struct macho_header_content<Pointer64<LittleEndian> > { mach_header_64 fields; };
template <typename P>
class macho_header {
public:
uint32_t magic() const INLINE { return E::get32(header.fields.magic); }
void set_magic(uint32_t value) INLINE { E::set32(header.fields.magic, value); }
uint32_t cputype() const INLINE { return E::get32(header.fields.cputype); }
void set_cputype(uint32_t value) INLINE { E::set32((uint32_t&)header.fields.cputype, value); }
uint32_t cpusubtype() const INLINE { return E::get32(header.fields.cpusubtype); }
void set_cpusubtype(uint32_t value) INLINE { E::set32((uint32_t&)header.fields.cpusubtype, value); }
uint32_t filetype() const INLINE { return E::get32(header.fields.filetype); }
void set_filetype(uint32_t value) INLINE { E::set32(header.fields.filetype, value); }
uint32_t ncmds() const INLINE { return E::get32(header.fields.ncmds); }
void set_ncmds(uint32_t value) INLINE { E::set32(header.fields.ncmds, value); }
uint32_t sizeofcmds() const INLINE { return E::get32(header.fields.sizeofcmds); }
void set_sizeofcmds(uint32_t value) INLINE { E::set32(header.fields.sizeofcmds, value); }
uint32_t flags() const INLINE { return E::get32(header.fields.flags); }
void set_flags(uint32_t value) INLINE { E::set32(header.fields.flags, value); }
uint32_t reserved() const INLINE { return E::get32(header.fields.reserved); }
void set_reserved(uint32_t value) INLINE { E::set32(header.fields.reserved, value); }
const macho_segment_command<P>* getSegment(const char *segname) const
{
const macho_load_command<P>* cmds = (macho_load_command<P>*)((uint8_t*)this + sizeof(macho_header<P>));
uint32_t cmd_count = this->ncmds();
const macho_load_command<P>* cmd = cmds;
for (uint32_t i = 0; i < cmd_count; ++i) {
if ( cmd->cmd() == macho_segment_command<P>::CMD ) {
const macho_segment_command<P>* segcmd = (macho_segment_command<P>*)cmd;
if (0 == strncmp(segname, segcmd->segname(), 16)) {
return segcmd;
}
}
cmd = (macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
}
return NULL;
}
const macho_section<P>* getSection(const char *segname, const char *sectname) const
{
const macho_segment_command<P>* segcmd = getSegment(segname);
if (!segcmd) return NULL;
const macho_section<P>* sectcmd = (macho_section<P>*)(segcmd+1);
uint32_t section_count = segcmd->nsects();
for (uint32_t j = 0; j < section_count; ++j) {
if (0 == ::strncmp(sectcmd[j].sectname(), sectname, 16)) {
return sectcmd+j;
}
}
if (strcmp(segname, "__DATA") == 0)
return getSection("__DATA_CONST", sectname);
return NULL;
}
const macho_load_command<P>* getLoadCommand(int query) const
{
const macho_load_command<P>* cmds = (macho_load_command<P>*)((uint8_t*)this + sizeof(macho_header<P>));
uint32_t cmd_count = this->ncmds();
const macho_load_command<P>* cmd = cmds;
for (uint32_t i = 0; i < cmd_count; ++i) {
if ( cmd->cmd() == query ) {
return cmd;
}
cmd = (macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
}
return NULL;
}
typedef typename P::E E;
private:
macho_header_content<P> header;
};
//
// compressed dyld info load command
//
template <typename P>
class macho_dyld_info_command {
public:
uint32_t cmd() const INLINE { return E::get32(fields.cmd); }
void set_cmd(uint32_t value) INLINE { E::set32(fields.cmd, value); }
uint32_t cmdsize() const INLINE { return E::get32(fields.cmdsize); }
void set_cmdsize(uint32_t value) INLINE { E::set32(fields.cmdsize, value); }
uint32_t rebase_off() const INLINE { return E::get32(fields.rebase_off); }
void set_rebase_off(uint32_t value) INLINE { E::set32(fields.rebase_off, value); }
uint32_t rebase_size() const INLINE { return E::get32(fields.rebase_size); }
void set_rebase_size(uint32_t value) INLINE { E::set32(fields.rebase_size, value); }
uint32_t bind_off() const INLINE { return E::get32(fields.bind_off); }
void set_bind_off(uint32_t value) INLINE { E::set32(fields.bind_off, value); }
uint32_t bind_size() const INLINE { return E::get32(fields.bind_size); }
void set_bind_size(uint32_t value) INLINE { E::set32(fields.bind_size, value); }
uint32_t weak_bind_off() const INLINE { return E::get32(fields.weak_bind_off); }
void set_weak_bind_off(uint32_t value) INLINE { E::set32(fields.weak_bind_off, value); }
uint32_t weak_bind_size() const INLINE { return E::get32(fields.weak_bind_size); }
void set_weak_bind_size(uint32_t value) INLINE { E::set32(fields.weak_bind_size, value); }
uint32_t lazy_bind_off() const INLINE { return E::get32(fields.lazy_bind_off); }
void set_lazy_bind_off(uint32_t value) INLINE { E::set32(fields.lazy_bind_off, value); }
uint32_t lazy_bind_size() const INLINE { return E::get32(fields.lazy_bind_size); }
void set_lazy_bind_size(uint32_t value) INLINE { E::set32(fields.lazy_bind_size, value); }
uint32_t export_off() const INLINE { return E::get32(fields.export_off); }
void set_export_off(uint32_t value) INLINE { E::set32(fields.export_off, value); }
uint32_t export_size() const INLINE { return E::get32(fields.export_size); }
void set_export_size(uint32_t value) INLINE { E::set32(fields.export_size, value); }
typedef typename P::E E;
private:
dyld_info_command fields;
};
#ifndef NO_ULEB
inline uint64_t read_uleb128(const uint8_t*& p, const uint8_t* end) {
uint64_t result = 0;
int bit = 0;
do {
if (p == end)
throw "malformed uleb128 extends beyond trie";
uint64_t slice = *p & 0x7f;
if (bit >= 64 || slice << bit >> bit != slice)
throw "uleb128 too big for 64-bits";
else {
result |= (slice << bit);
bit += 7;
}
}
while (*p++ & 0x80);
return result;
}
inline int64_t read_sleb128(const uint8_t*& p, const uint8_t* end)
{
int64_t result = 0;
int bit = 0;
uint8_t byte;
do {
if (p == end)
throw "malformed sleb128";
byte = *p++;
result |= ((byte & 0x7f) << bit);
bit += 7;
} while (byte & 0x80);
// sign extend negative numbers
if ( (byte & 0x40) != 0 )
result |= (-1LL) << bit;
return result;
}
#endif
#endif // __MACH_O_FILE_ABSTRACTION__