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/*
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* Copyright 2008-2012 Gentoo Foundation
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* Distributed under the terms of the GNU General Public License v2
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* $Header: /var/cvsroot/gentoo-projects/pax-utils/macho.h,v 1.8 2010/04/04 10:03:33 grobian Exp $
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*/
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#ifndef _MACHO_H
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#define _MACHO_H 1
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#include <stdint.h>
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/*
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* http://developer.apple.com/documentation/DeveloperTools/Conceptual/MachORuntime/Reference/reference.html
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*/
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#define CPU_ARCH_ABI64 0x01000000 /* 64 bit */
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typedef int cpu_type_t;
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typedef int cpu_subtype_t;
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struct mach_header
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{
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uint32_t magic;
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cpu_type_t cputype;
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cpu_subtype_t cpusubtype;
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uint32_t filetype;
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uint32_t ncmds;
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uint32_t sizeofcmds;
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uint32_t flags;
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};
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/* magic */
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#define MH_MAGIC 0xfeedface /* same endianness */
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#define MH_CIGAM 0xcefaedfe /* the other endianness */
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/* cputype */
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#define CPU_TYPE_POWERPC ((cpu_type_t)18)
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#define CPU_TYPE_I386 ((cpu_type_t)7)
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#define CPU_TYPE_ARM ((cpu_type_t)12)
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/* cpusubtype */
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#define CPU_SUBTYPE_POWERPC_ALL ((cpu_subtype_t)0)
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#define CPU_SUBTYPE_POWERPC_601 ((cpu_subtype_t)1)
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#define CPU_SUBTYPE_POWERPC_602 ((cpu_subtype_t)2)
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#define CPU_SUBTYPE_POWERPC_603 ((cpu_subtype_t)3)
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#define CPU_SUBTYPE_POWERPC_603e ((cpu_subtype_t)4)
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#define CPU_SUBTYPE_POWERPC_603ev ((cpu_subtype_t)5)
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#define CPU_SUBTYPE_POWERPC_604 ((cpu_subtype_t)6)
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#define CPU_SUBTYPE_POWERPC_604e ((cpu_subtype_t)7)
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#define CPU_SUBTYPE_POWERPC_620 ((cpu_subtype_t)8)
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#define CPU_SUBTYPE_POWERPC_750 ((cpu_subtype_t)9)
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#define CPU_SUBTYPE_POWERPC_7400 ((cpu_subtype_t)10)
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#define CPU_SUBTYPE_POWERPC_7450 ((cpu_subtype_t)11)
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#define CPU_SUBTYPE_POWERPC_970 ((cpu_subtype_t)100)
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#define CPU_SUBTYPE_I386_ALL ((cpu_subtype_t)3)
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#define CPU_SUBTYPE_486 ((cpu_subtype_t)4)
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#define CPU_SUBTYPE_586 ((cpu_subtype_t)5)
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#define CPU_SUBTYPE_PENTIUM_3 ((cpu_subtype_t)8)
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#define CPU_SUBTYPE_PENTIUM_M ((cpu_subtype_t)9)
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#define CPU_SUBTYPE_PENTIUM_4 ((cpu_subtype_t)10)
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#define CPU_SUBTYPE_ITANIUM ((cpu_subtype_t)11)
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#define CPU_SUBTYPE_XEON ((cpu_subtype_t)12)
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/* filetype */
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#define MH_OBJECT 0x1 /* intermediate object file (.o) */
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#define MH_EXECUTE 0x2 /* standard executable program */
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#define MH_BUNDLE 0x8 /* dlopen plugin (.bundle) */
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#define MH_DYLIB 0x6 /* dynamic shared library (.dylib) */
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#define MH_PRELOAD 0x5 /* executable not loaded by Mac OS X kernel (ROM) */
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#define MH_CORE 0x4 /* program crash core file */
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#define MH_DYLINKER 0x7 /* dynamic linker shared library (dyld) */
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#define MH_DYLIB_STUB 0x9 /* shared library stub for static only, no section*/
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#define MH_DSYM 0xa /* debug symbols file (in .dSYM dir) */
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/* flags */
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#define MH_NOUNDEFS 0x1 /* there are no undefined references */
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#define MH_INCRLINK 0x2 /* the object file is the output of an
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incremental link against a base file and
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cannot be link edited again */
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#define MH_DYLDLINK 0x4 /* the object file is input for the dynamic
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linker and cannot be staticly link edited
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again */
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#define MH_TWOLEVEL 0x80 /* the image is using two-level namespace
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bindings */
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#define MH_BINDATLOAD 0x8 /* the dynamic linker should bind the
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undefined references when the file is
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loaded */
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#define MH_PREBOUND 0x10 /* the file’s undefined references are
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prebound */
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#define MH_PREBINDABLE 0x800/* the file is not prebound but can have its
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prebinding redone, used only when
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MH_PREBOUND is not set */
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#define MH_NOFIXPREBINDING 0x400 /* the dynamic linker doesn’t notify
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the prebinding agent about this
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executable */
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#define MH_ALLMODSBOUND 0x1000 /* indicates that this binary binds to
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all two-level namespace modules of its
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dependent libraries, used only when
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MH_PREBINDABLE and MH_TWOLEVEL are set
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*/
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#define MH_CANONICAL 0x4000 /* the file has been canonicalized by
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unprebinding, clearing prebinding
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information from the file */
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#define MH_SPLIT_SEGS 0x20 /* the file has its read-only and
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read-write segments split */
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#define MH_FORCE_FLAT 0x100 /* the executable is forcing all images to
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use flat namespace bindings */
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#define MH_SUBSECTIONS_VIA_SYMBOLS 0x2000/* the sections of the object
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file can be divided into
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individual blocks, these
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blocks are dead-stripped if
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they are not used by other
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code */
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#define MH_NOMULTIDEFS 0x200 /* this umbrella guarantees there are no
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multiple defintions of symbols in its
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subimages, as a result the two-level
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namespace hints can always be used */
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struct mach_header_64
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{
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uint32_t magic;
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cpu_type_t cputype;
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cpu_subtype_t cpusubtype;
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uint32_t filetype;
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uint32_t ncmds;
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uint32_t sizeofcmds;
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uint32_t flags;
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uint32_t reserved;
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};
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/* magic */
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#define MH_MAGIC_64 0xfeedfacf /* same endianness 64-bits */
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#define MH_CIGAM_64 0xcffaedfe /* the other endianness 64-bits */
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/* cputype */
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#define CPU_TYPE_POWERPC64 (CPU_TYPE_POWERPC | CPU_ARCH_ABI64)
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#define CPU_TYPE_X86_64 (CPU_TYPE_I386 | CPU_ARCH_ABI64)
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struct load_command
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{
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uint32_t cmd;
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uint32_t cmdsize;
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};
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/* cmd */
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#define LC_UUID 0x1b /* Specifies the 128-bit UUID for an image
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or its corresponding dSYM file. */
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#define LC_SEGMENT 0x1 /* Defines a segment of this file to be
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mapped into the address space of the
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process that loads this file. It also
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includes all the sections contained by
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the segment. */
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#define LC_SEGMENT_64 0x19 /* Defines a 64-bit segment of this file to
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be mapped into the address space of the
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process that loads this file. It also
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includes all the sections contained by
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the segment. */
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#define LC_SYMTAB 0x2 /* Specifies the symbol table for this file.
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This information is used by both static
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and dynamic linkers when linking the
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file, and also by debuggers to map
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symbols to the original source code files
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from which the symbols were generated. */
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#define LC_DYSYMTAB 0xb /* Specifies additional symbol table
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information used by the dynamic linker. */
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#define LC_THREAD 0x4
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#define LC_UNIXTHREAD 0x5 /* For an executable file, the LC_UNIXTHREAD
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command defines the initial thread state
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of the main thread of the process.
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LC_THREAD is similar to LC_UNIXTHREAD but
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does not cause the kernel to allocate a
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stack. */
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#define LC_LOAD_DYLIB 0xc /* Defines the name of a dynamic shared
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library that this file links against.
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(needed) */
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#define LC_ID_DYLIB 0xd /* Specifies the install name of a dynamic
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shared library. (soname) */
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#define LC_PREBOUND_DYLIB 0x10 /* For a shared library that this
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executable is linked prebound against,
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specifies the modules in the shared
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library that are used. */
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#define LC_LOAD_DYLINKER 0xe/* Specifies the dynamic linker that the
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kernel executes to load this file. (.interp) */
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#define LC_ID_DYLINKER 0xf /* Identifies this file as a dynamic linker. */
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#define LC_ROUTINES 0x11 /* Contains the address of the shared
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library initialization routine (specified
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by the linker’s -init option). */
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#define LC_ROUTINES_64 0x1a /* Contains the address of the shared
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library 64-bit initialization routine
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(specified by the linker’s -init option). */
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#define LC_TWOLEVEL_HINTS 0x16 /* Contains the two-level namespace
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lookup hint table. */
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#define LC_SUB_FRAMEWORK 0x12/* Identifies this file as the
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implementation of a subframework of an
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umbrella framework. The name of the
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umbrella framework is stored in the
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string parameter. */
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#define LC_SUB_UMBRELLA 0x13/* Specifies a file that is a subumbrella of
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this umbrella framework. */
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#define LC_SUB_LIBRARY 0x15/* Identifies this file as the
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implementation of a sublibrary of an
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umbrella framework. The name of the
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umbrella framework is stored in the
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string parameter. Note that Apple has not
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defined a supported location for
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sublibraries. */
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#define LC_SUB_CLIENT 0x14/* A subframework can explicitly allow
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another framework or bundle to link
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against it by including an LC_SUB_CLIENT
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load command containing the name of the
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framework or a client name for a bundle. */
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union lc_str
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{
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uint32_t offset;
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/* The ptr field is not used in Mach-O files.
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char *ptr; */
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};
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/* offset: A byte offset from the start of the load command that
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* contains this string to the start of the string data.
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*/
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/*
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Defines the data used by the dynamic linker to match a shared library against the files that have linked to it.
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*/
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struct dylib
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{
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union lc_str name;
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uint32_t timestamp;
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uint32_t current_version;
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uint32_t compatibility_version;
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};
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/*
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Defines the attributes of the LC_LOAD_DYLIB and LC_ID_DYLIB load commands.
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*/
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struct dylib_command
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{
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uint32_t cmd;
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uint32_t cmdsize;
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struct dylib dylib;
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};
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/* cmd: set to either LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, or LC_ID_DYLIB. */
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/* cmdsize: set to sizeof(dylib_command) plus the size of the data
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* pointed to by the name field of the dylib field. */
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struct dylinker_command {
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uint32_t cmd;
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uint32_t cmdsize;
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union lc_str name;
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};
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struct fat_header
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{
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uint32_t magic;
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uint32_t nfat_arch;
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};
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/* magic */
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#define FAT_MAGIC 0xcafebabe /* big endian, how it is stored */
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#define FAT_CIGAM 0xbebafeca /* for intel dudes */
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/* nfat_arch: the number of far_arch structures following */
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struct fat_arch
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{
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cpu_type_t cputype;
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cpu_subtype_t cpusubtype;
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uint32_t offset;
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uint32_t size;
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uint32_t align;
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};
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#endif
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