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/* |
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* Copyright 2008-2010 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 1.7 2008/12/30 12:34:28 vapier Exp $ |
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*/ |
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|
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#ifndef _MACHO_H |
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#define _MACHO_H 1 |
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|
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#include <stdint.h> |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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/* |
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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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/* |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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#endif |
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