bfd/mach-o.h

   1 /* Mach-O support for BFD.
   2    Copyright 1999, 2000, 2001, 2002, 2003, 2005, 2007, 2008, 2009
   3    Free Software Foundation, Inc.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #ifndef _BFD_MACH_O_H_
  23 #define _BFD_MACH_O_H_
  24
  25 #include "bfd.h"
  26
  27 #define BFD_MACH_O_N_STAB  0xe0 /* If any of these bits set, a symbolic debugging entry.  */
  28 #define BFD_MACH_O_N_PEXT  0x10 /* Private external symbol bit.  */
  29 #define BFD_MACH_O_N_TYPE  0x0e /* Mask for the type bits.  */
  30 #define BFD_MACH_O_N_EXT   0x01 /* External symbol bit, set for external symbols.  */
  31 #define BFD_MACH_O_N_UNDF  0x00 /* Undefined, n_sect == NO_SECT.  */
  32 #define BFD_MACH_O_N_ABS   0x02 /* Absolute, n_sect == NO_SECT.  */
  33 #define BFD_MACH_O_N_INDR  0x0a /* Indirect.  */
  34 #define BFD_MACH_O_N_PBUD  0x0c /* Prebound undefined (defined in a dylib).  */
  35 #define BFD_MACH_O_N_SECT  0x0e /* Defined in section number n_sect.  */
  36
  37 #define BFD_MACH_O_NO_SECT 0
  38
  39 #define BFD_MACH_O_SYM_NTYPE(SYM) (((SYM)->udata.i >> 24) & 0xff)
  40 #define BFD_MACH_O_SYM_NSECT(SYM) (((SYM)->udata.i >> 16) & 0xff)
  41 #define BFD_MACH_O_SYM_NDESC(SYM) ((SYM)->udata.i & 0xffff)
  42
  43 typedef enum bfd_mach_o_mach_header_magic
  44 {
  45   BFD_MACH_O_MH_MAGIC = 0xfeedface,
  46   BFD_MACH_O_MH_CIGAM = 0xcefaedfe,
  47   BFD_MACH_O_MH_MAGIC_64 = 0xfeedfacf,
  48   BFD_MACH_O_MH_CIGAM_64 = 0xcffaedfe
  49 }
  50 bfd_mach_o_mach_header_magic;
  51
  52 typedef enum bfd_mach_o_ppc_thread_flavour
  53 {
  54   BFD_MACH_O_PPC_THREAD_STATE = 1,
  55   BFD_MACH_O_PPC_FLOAT_STATE = 2,
  56   BFD_MACH_O_PPC_EXCEPTION_STATE = 3,
  57   BFD_MACH_O_PPC_VECTOR_STATE = 4,
  58   BFD_MACH_O_PPC_THREAD_STATE_64 = 5
  59 }
  60 bfd_mach_o_ppc_thread_flavour;
  61
  62 /* Defined in <mach/i386/thread_status.h> */
  63 typedef enum bfd_mach_o_i386_thread_flavour
  64 {
  65   BFD_MACH_O_x86_THREAD_STATE32 = 1,
  66   BFD_MACH_O_x86_FLOAT_STATE32 = 2,
  67   BFD_MACH_O_x86_EXCEPTION_STATE32 = 3,
  68   BFD_MACH_O_x86_THREAD_STATE64 = 4,
  69   BFD_MACH_O_x86_FLOAT_STATE64 = 5,
  70   BFD_MACH_O_x86_EXCEPTION_STATE64 = 6,
  71   BFD_MACH_O_x86_THREAD_STATE = 7,
  72   BFD_MACH_O_x86_FLOAT_STATE = 8,
  73   BFD_MACH_O_x86_EXCEPTION_STATE = 9,
  74   BFD_MACH_O_x86_DEBUG_STATE32 = 10,
  75   BFD_MACH_O_x86_DEBUG_STATE64 = 11,
  76   BFD_MACH_O_x86_DEBUG_STATE = 12,
  77   BFD_MACH_O_THREAD_STATE_NONE = 13
  78 }
  79 bfd_mach_o_i386_thread_flavour;
  80
  81 #define BFD_MACH_O_LC_REQ_DYLD 0x80000000
  82
  83 typedef enum bfd_mach_o_load_command_type
  84 {
  85   BFD_MACH_O_LC_SEGMENT = 0x1,          /* File segment to be mapped.  */
  86   BFD_MACH_O_LC_SYMTAB = 0x2,           /* Link-edit stab symbol table info (obsolete).  */
  87   BFD_MACH_O_LC_SYMSEG = 0x3,           /* Link-edit gdb symbol table info.  */
  88   BFD_MACH_O_LC_THREAD = 0x4,           /* Thread.  */
  89   BFD_MACH_O_LC_UNIXTHREAD = 0x5,       /* UNIX thread (includes a stack).  */
  90   BFD_MACH_O_LC_LOADFVMLIB = 0x6,       /* Load a fixed VM shared library.  */
  91   BFD_MACH_O_LC_IDFVMLIB = 0x7,         /* Fixed VM shared library id.  */
  92   BFD_MACH_O_LC_IDENT = 0x8,            /* Object identification information (obsolete).  */
  93   BFD_MACH_O_LC_FVMFILE = 0x9,          /* Fixed VM file inclusion.  */
  94   BFD_MACH_O_LC_PREPAGE = 0xa,          /* Prepage command (internal use).  */
  95   BFD_MACH_O_LC_DYSYMTAB = 0xb,         /* Dynamic link-edit symbol table info.  */
  96   BFD_MACH_O_LC_LOAD_DYLIB = 0xc,       /* Load a dynamically linked shared library.  */
  97   BFD_MACH_O_LC_ID_DYLIB = 0xd,         /* Dynamically linked shared lib identification.  */
  98   BFD_MACH_O_LC_LOAD_DYLINKER = 0xe,    /* Load a dynamic linker.  */
  99   BFD_MACH_O_LC_ID_DYLINKER = 0xf,      /* Dynamic linker identification.  */
 100   BFD_MACH_O_LC_PREBOUND_DYLIB = 0x10,  /* Modules prebound for a dynamically.  */
 101   BFD_MACH_O_LC_ROUTINES = 0x11,        /* Image routines.  */
 102   BFD_MACH_O_LC_SUB_FRAMEWORK = 0x12,   /* Sub framework.  */
 103   BFD_MACH_O_LC_SUB_UMBRELLA = 0x13,    /* Sub umbrella.  */
 104   BFD_MACH_O_LC_SUB_CLIENT = 0x14,      /* Sub client.  */
 105   BFD_MACH_O_LC_SUB_LIBRARY = 0x15,     /* Sub library.  */
 106   BFD_MACH_O_LC_TWOLEVEL_HINTS = 0x16,  /* Two-level namespace lookup hints.  */
 107   BFD_MACH_O_LC_PREBIND_CKSUM = 0x17,   /* Prebind checksum.  */
 108   /* Load a dynamically linked shared library that is allowed to be
 109        missing (weak).  */
 110   BFD_MACH_O_LC_LOAD_WEAK_DYLIB = 0x18,
 111   BFD_MACH_O_LC_SEGMENT_64 = 0x19,      /* 64-bit segment of this file to be
 112                                            mapped.  */
 113   BFD_MACH_O_LC_ROUTINES_64 = 0x1a,     /* Address of the dyld init routine
 114                                            in a dylib.  */
 115   BFD_MACH_O_LC_UUID = 0x1b,            /* 128-bit UUID of the executable.  */
 116   BFD_MACH_O_LC_RPATH = 0x1c,           /* Run path addiions.  */
 117   BFD_MACH_O_LC_CODE_SIGNATURE = 0x1d,  /* Local of code signature.  */
 118   BFD_MACH_O_LC_SEGMENT_SPLIT_INFO = 0x1e, /* Local of info to split seg.  */
 119   BFD_MACH_O_LC_REEXPORT_DYLIB = 0x1f,  /* Load and re-export lib.  */
 120   BFD_MACH_O_LC_LAZY_LOAD_DYLIB = 0x20, /* Delay load of lib until use.  */
 121   BFD_MACH_O_LC_ENCRYPTION_INFO = 0x21  /* Encrypted segment info.  */
 122 }
 123 bfd_mach_o_load_command_type;
 124
 125 #define BFD_MACH_O_CPU_IS64BIT 0x1000000
 126
 127 typedef enum bfd_mach_o_cpu_type
 128 {
 129   BFD_MACH_O_CPU_TYPE_VAX = 1,
 130   BFD_MACH_O_CPU_TYPE_MC680x0 = 6,
 131   BFD_MACH_O_CPU_TYPE_I386 = 7,
 132   BFD_MACH_O_CPU_TYPE_MIPS = 8,
 133   BFD_MACH_O_CPU_TYPE_MC98000 = 10,
 134   BFD_MACH_O_CPU_TYPE_HPPA = 11,
 135   BFD_MACH_O_CPU_TYPE_ARM = 12,
 136   BFD_MACH_O_CPU_TYPE_MC88000 = 13,
 137   BFD_MACH_O_CPU_TYPE_SPARC = 14,
 138   BFD_MACH_O_CPU_TYPE_I860 = 15,
 139   BFD_MACH_O_CPU_TYPE_ALPHA = 16,
 140   BFD_MACH_O_CPU_TYPE_POWERPC = 18,
 141   BFD_MACH_O_CPU_TYPE_POWERPC_64 = (BFD_MACH_O_CPU_TYPE_POWERPC | BFD_MACH_O_CPU_IS64BIT),
 142   BFD_MACH_O_CPU_TYPE_X86_64 = (BFD_MACH_O_CPU_TYPE_I386 | BFD_MACH_O_CPU_IS64BIT)
 143 }
 144 bfd_mach_o_cpu_type;
 145
 146 typedef enum bfd_mach_o_cpu_subtype
 147 {
 148   BFD_MACH_O_CPU_SUBTYPE_X86_ALL = 3
 149 }
 150 bfd_mach_o_cpu_subtype;
 151
 152 typedef enum bfd_mach_o_filetype
 153 {
 154   BFD_MACH_O_MH_OBJECT = 1,
 155   BFD_MACH_O_MH_EXECUTE = 2,
 156   BFD_MACH_O_MH_FVMLIB = 3,
 157   BFD_MACH_O_MH_CORE = 4,
 158   BFD_MACH_O_MH_PRELOAD = 5,
 159   BFD_MACH_O_MH_DYLIB = 6,
 160   BFD_MACH_O_MH_DYLINKER = 7,
 161   BFD_MACH_O_MH_BUNDLE = 8
 162 }
 163 bfd_mach_o_filetype;
 164
 165 /* Constants for the type of a section.  */
 166
 167 typedef enum bfd_mach_o_section_type
 168 {
 169   /* Regular section.  */
 170   BFD_MACH_O_S_REGULAR = 0x0,
 171
 172   /* Zero fill on demand section.  */
 173   BFD_MACH_O_S_ZEROFILL = 0x1,
 174
 175   /* Section with only literal C strings.  */
 176   BFD_MACH_O_S_CSTRING_LITERALS = 0x2,
 177
 178   /* Section with only 4 byte literals.  */
 179   BFD_MACH_O_S_4BYTE_LITERALS = 0x3,
 180
 181   /* Section with only 8 byte literals.  */
 182   BFD_MACH_O_S_8BYTE_LITERALS = 0x4,
 183
 184   /* Section with only pointers to literals.  */
 185   BFD_MACH_O_S_LITERAL_POINTERS = 0x5,
 186
 187   /* For the two types of symbol pointers sections and the symbol stubs
 188      section they have indirect symbol table entries.  For each of the
 189      entries in the section the indirect symbol table entries, in
 190      corresponding order in the indirect symbol table, start at the index
 191      stored in the reserved1 field of the section structure.  Since the
 192      indirect symbol table entries correspond to the entries in the
 193      section the number of indirect symbol table entries is inferred from
 194      the size of the section divided by the size of the entries in the
 195      section.  For symbol pointers sections the size of the entries in
 196      the section is 4 bytes and for symbol stubs sections the byte size
 197      of the stubs is stored in the reserved2 field of the section
 198      structure.  */
 199
 200   /* Section with only non-lazy symbol pointers.  */
 201   BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS = 0x6,
 202
 203   /* Section with only lazy symbol pointers.  */
 204   BFD_MACH_O_S_LAZY_SYMBOL_POINTERS = 0x7,
 205
 206   /* Section with only symbol stubs, byte size of stub in the reserved2 field.  */
 207   BFD_MACH_O_S_SYMBOL_STUBS = 0x8,
 208
 209   /* Section with only function pointers for initialization.  */
 210   BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS = 0x9
 211 }
 212 bfd_mach_o_section_type;
 213
 214 /* The flags field of a section structure is separated into two parts a section
 215    type and section attributes.  The section types are mutually exclusive (it
 216    can only have one type) but the section attributes are not (it may have more
 217    than one attribute).  */
 218
 219 #define BFD_MACH_O_SECTION_TYPE_MASK        0x000000ff
 220
 221 /* Constants for the section attributes part of the flags field of a section
 222    structure.  */
 223 #define BFD_MACH_O_SECTION_ATTRIBUTES_MASK  0xffffff00
 224 /* System setable attributes.  */
 225 #define BFD_MACH_O_SECTION_ATTRIBUTES_SYS   0x00ffff00
 226 /* User attributes.  */
 227 #define BFD_MACH_O_SECTION_ATTRIBUTES_USR   0xff000000
 228
 229 /* Section has local relocation entries.  */
 230 #define BFD_MACH_O_S_ATTR_LOC_RELOC         0x00000100
 231
 232 /* Section has external relocation entries.  */
 233 #define BFD_MACH_O_S_ATTR_EXT_RELOC         0x00000200
 234
 235 /* Section contains some machine instructions.  */
 236 #define BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS 0x00004000
 237
 238 #define BFD_MACH_O_S_ATTR_DEBUG             0x02000000
 239
 240 /* Section contains only true machine instructions.  */
 241 #define BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS 0x80000000
 242
 243 typedef struct bfd_mach_o_header
 244 {
 245   unsigned long magic;
 246   unsigned long cputype;
 247   unsigned long cpusubtype;
 248   unsigned long filetype;
 249   unsigned long ncmds;
 250   unsigned long sizeofcmds;
 251   unsigned long flags;
 252   unsigned int reserved;
 253   /* Version 1: 32 bits, version 2: 64 bits.  */
 254   unsigned int version;
 255   enum bfd_endian byteorder;
 256 }
 257 bfd_mach_o_header;
 258
 259 #define BFD_MACH_O_HEADER_SIZE 28
 260 #define BFD_MACH_O_HEADER_64_SIZE 32
 261
 262 typedef struct bfd_mach_o_section
 263 {
 264   asection *bfdsection;
 265   char sectname[16 + 1];
 266   char segname[16 + 1];
 267   bfd_vma addr;
 268   bfd_vma size;
 269   bfd_vma offset;
 270   unsigned long align;
 271   bfd_vma reloff;
 272   unsigned long nreloc;
 273   unsigned long flags;
 274   unsigned long reserved1;
 275   unsigned long reserved2;
 276   unsigned long reserved3;
 277 }
 278 bfd_mach_o_section;
 279 #define BFD_MACH_O_SECTION_SIZE 68
 280 #define BFD_MACH_O_SECTION_64_SIZE 80
 281
 282 typedef struct bfd_mach_o_segment_command
 283 {
 284   char segname[16 + 1];
 285   bfd_vma vmaddr;
 286   bfd_vma vmsize;
 287   bfd_vma fileoff;
 288   unsigned long filesize;
 289   unsigned long maxprot;        /* Maximum permitted protection.  */
 290   unsigned long initprot;       /* Initial protection.  */
 291   unsigned long nsects;
 292   unsigned long flags;
 293   bfd_mach_o_section *sections;
 294   asection *segment;
 295 }
 296 bfd_mach_o_segment_command;
 297 #define BFD_MACH_O_LC_SEGMENT_SIZE 56
 298 #define BFD_MACH_O_LC_SEGMENT_64_SIZE 72
 299
 300 /* Protection flags.  */
 301 #define BFD_MACH_O_PROT_READ    0x01
 302 #define BFD_MACH_O_PROT_WRITE   0x02
 303 #define BFD_MACH_O_PROT_EXECUTE 0x04
 304
 305 typedef struct bfd_mach_o_symtab_command
 306 {
 307   unsigned long symoff;
 308   unsigned long nsyms;
 309   unsigned long stroff;
 310   unsigned long strsize;
 311   asymbol *symbols;
 312   char *strtab;
 313   asection *stabs_segment;
 314   asection *stabstr_segment;
 315 }
 316 bfd_mach_o_symtab_command;
 317
 318 /* This is the second set of the symbolic information which is used to support
 319    the data structures for the dynamically link editor.
 320
 321    The original set of symbolic information in the symtab_command which contains
 322    the symbol and string tables must also be present when this load command is
 323    present.  When this load command is present the symbol table is organized
 324    into three groups of symbols:
 325        local symbols (static and debugging symbols) - grouped by module
 326        defined external symbols - grouped by module (sorted by name if not lib)
 327        undefined external symbols (sorted by name)
 328    In this load command there are offsets and counts to each of the three groups
 329    of symbols.
 330
 331    This load command contains a the offsets and sizes of the following new
 332    symbolic information tables:
 333        table of contents
 334        module table
 335        reference symbol table
 336        indirect symbol table
 337    The first three tables above (the table of contents, module table and
 338    reference symbol table) are only present if the file is a dynamically linked
 339    shared library.  For executable and object modules, which are files
 340    containing only one module, the information that would be in these three
 341    tables is determined as follows:
 342        table of contents - the defined external symbols are sorted by name
 343        module table - the file contains only one module so everything in the
 344                       file is part of the module.
 345        reference symbol table - is the defined and undefined external symbols
 346
 347    For dynamically linked shared library files this load command also contains
 348    offsets and sizes to the pool of relocation entries for all sections
 349    separated into two groups:
 350        external relocation entries
 351        local relocation entries
 352    For executable and object modules the relocation entries continue to hang
 353    off the section structures.  */
 354
 355 typedef struct bfd_mach_o_dysymtab_command
 356 {
 357   /* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command
 358      are grouped into the following three groups:
 359        local symbols (further grouped by the module they are from)
 360        defined external symbols (further grouped by the module they are from)
 361        undefined symbols
 362
 363      The local symbols are used only for debugging.  The dynamic binding
 364      process may have to use them to indicate to the debugger the local
 365      symbols for a module that is being bound.
 366
 367      The last two groups are used by the dynamic binding process to do the
 368      binding (indirectly through the module table and the reference symbol
 369      table when this is a dynamically linked shared library file).  */
 370
 371   unsigned long ilocalsym;    /* Index to local symbols.  */
 372   unsigned long nlocalsym;    /* Number of local symbols.  */
 373   unsigned long iextdefsym;   /* Index to externally defined symbols.  */
 374   unsigned long nextdefsym;   /* Number of externally defined symbols.  */
 375   unsigned long iundefsym;    /* Index to undefined symbols.  */
 376   unsigned long nundefsym;    /* Number of undefined symbols.  */
 377
 378   /* For the for the dynamic binding process to find which module a symbol
 379      is defined in the table of contents is used (analogous to the ranlib
 380      structure in an archive) which maps defined external symbols to modules
 381      they are defined in.  This exists only in a dynamically linked shared
 382      library file.  For executable and object modules the defined external
 383      symbols are sorted by name and is use as the table of contents.  */
 384
 385   unsigned long tocoff;       /* File offset to table of contents.  */
 386   unsigned long ntoc;         /* Number of entries in table of contents.  */
 387
 388   /* To support dynamic binding of "modules" (whole object files) the symbol
 389      table must reflect the modules that the file was created from.  This is
 390      done by having a module table that has indexes and counts into the merged
 391      tables for each module.  The module structure that these two entries
 392      refer to is described below.  This exists only in a dynamically linked
 393      shared library file.  For executable and object modules the file only
 394      contains one module so everything in the file belongs to the module.  */
 395
 396   unsigned long modtaboff;    /* File offset to module table.  */
 397   unsigned long nmodtab;      /* Number of module table entries.  */
 398
 399   /* To support dynamic module binding the module structure for each module
 400      indicates the external references (defined and undefined) each module
 401      makes.  For each module there is an offset and a count into the
 402      reference symbol table for the symbols that the module references.
 403      This exists only in a dynamically linked shared library file.  For
 404      executable and object modules the defined external symbols and the
 405      undefined external symbols indicates the external references.  */
 406
 407   unsigned long extrefsymoff;  /* Offset to referenced symbol table.  */
 408   unsigned long nextrefsyms;   /* Number of referenced symbol table entries.  */
 409
 410   /* The sections that contain "symbol pointers" and "routine stubs" have
 411      indexes and (implied counts based on the size of the section and fixed
 412      size of the entry) into the "indirect symbol" table for each pointer
 413      and stub.  For every section of these two types the index into the
 414      indirect symbol table is stored in the section header in the field
 415      reserved1.  An indirect symbol table entry is simply a 32bit index into
 416      the symbol table to the symbol that the pointer or stub is referring to.
 417      The indirect symbol table is ordered to match the entries in the section.  */
 418
 419   unsigned long indirectsymoff; /* File offset to the indirect symbol table.  */
 420   unsigned long nindirectsyms;  /* Number of indirect symbol table entries.  */
 421
 422   /* To support relocating an individual module in a library file quickly the
 423      external relocation entries for each module in the library need to be
 424      accessed efficiently.  Since the relocation entries can't be accessed
 425      through the section headers for a library file they are separated into
 426      groups of local and external entries further grouped by module.  In this
 427      case the presents of this load command who's extreloff, nextrel,
 428      locreloff and nlocrel fields are non-zero indicates that the relocation
 429      entries of non-merged sections are not referenced through the section
 430      structures (and the reloff and nreloc fields in the section headers are
 431      set to zero).
 432
 433      Since the relocation entries are not accessed through the section headers
 434      this requires the r_address field to be something other than a section
 435      offset to identify the item to be relocated.  In this case r_address is
 436      set to the offset from the vmaddr of the first LC_SEGMENT command.
 437
 438      The relocation entries are grouped by module and the module table
 439      entries have indexes and counts into them for the group of external
 440      relocation entries for that the module.
 441
 442      For sections that are merged across modules there must not be any
 443      remaining external relocation entries for them (for merged sections
 444      remaining relocation entries must be local).  */
 445
 446   unsigned long extreloff;    /* Offset to external relocation entries.  */
 447   unsigned long nextrel;      /* Number of external relocation entries.  */
 448
 449   /* All the local relocation entries are grouped together (they are not
 450      grouped by their module since they are only used if the object is moved
 451      from it statically link edited address).  */
 452
 453   unsigned long locreloff;    /* Offset to local relocation entries.  */
 454   unsigned long nlocrel;      /* Number of local relocation entries.  */
 455 }
 456 bfd_mach_o_dysymtab_command;
 457
 458 /* An indirect symbol table entry is simply a 32bit index into the symbol table
 459    to the symbol that the pointer or stub is refering to.  Unless it is for a
 460    non-lazy symbol pointer section for a defined symbol which strip(1) as
 461    removed.  In which case it has the value INDIRECT_SYMBOL_LOCAL.  If the
 462    symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that.  */
 463
 464 #define BFD_MACH_O_INDIRECT_SYMBOL_LOCAL 0x80000000
 465 #define BFD_MACH_O_INDIRECT_SYMBOL_ABS   0x40000000
 466
 467 typedef struct bfd_mach_o_thread_flavour
 468 {
 469   unsigned long flavour;
 470   bfd_vma offset;
 471   unsigned long size;
 472 }
 473 bfd_mach_o_thread_flavour;
 474
 475 typedef struct bfd_mach_o_thread_command
 476 {
 477   unsigned long nflavours;
 478   bfd_mach_o_thread_flavour *flavours;
 479   asection *section;
 480 }
 481 bfd_mach_o_thread_command;
 482
 483 typedef struct bfd_mach_o_dylinker_command
 484 {
 485   unsigned long cmd;                 /* LC_ID_DYLINKER or LC_LOAD_DYLINKER.  */
 486   unsigned long cmdsize;             /* Includes pathname string.  */
 487   unsigned long name_offset;         /* Offset to library's path name.  */
 488   unsigned long name_len;            /* Offset to library's path name.  */
 489   asection *section;
 490 }
 491 bfd_mach_o_dylinker_command;
 492
 493 typedef struct bfd_mach_o_dylib_command
 494 {
 495   unsigned long cmd;                   /* LC_ID_DYLIB or LC_LOAD_DYLIB.  */
 496   unsigned long cmdsize;               /* Includes pathname string.  */
 497   unsigned long name_offset;           /* Offset to library's path name.  */
 498   unsigned long name_len;              /* Offset to library's path name.  */
 499   unsigned long timestamp;             /* Library's build time stamp.  */
 500   unsigned long current_version;       /* Library's current version number.  */
 501   unsigned long compatibility_version; /* Library's compatibility vers number.  */
 502   asection *section;
 503 }
 504 bfd_mach_o_dylib_command;
 505
 506 typedef struct bfd_mach_o_prebound_dylib_command
 507 {
 508   unsigned long cmd;                 /* LC_PREBOUND_DYLIB.  */
 509   unsigned long cmdsize;             /* Includes strings.  */
 510   unsigned long name;                /* Library's path name.  */
 511   unsigned long nmodules;            /* Number of modules in library.  */
 512   unsigned long linked_modules;      /* Bit vector of linked modules.  */
 513   asection *section;
 514 }
 515 bfd_mach_o_prebound_dylib_command;
 516
 517 typedef struct bfd_mach_o_uuid_command
 518 {
 519   unsigned long cmd;                 /* LC_PREBOUND_DYLIB.  */
 520   unsigned long cmdsize;             /* Includes uuid.  */
 521   unsigned char uuid[16];            /* Uuid.  */
 522   asection *section;
 523 }
 524 bfd_mach_o_uuid_command;
 525
 526 typedef struct bfd_mach_o_load_command
 527 {
 528   bfd_mach_o_load_command_type type;
 529   bfd_boolean type_required;
 530   bfd_vma offset;
 531   bfd_vma len;
 532   union
 533   {
 534     bfd_mach_o_segment_command segment;
 535     bfd_mach_o_symtab_command symtab;
 536     bfd_mach_o_dysymtab_command dysymtab;
 537     bfd_mach_o_thread_command thread;
 538     bfd_mach_o_dylib_command dylib;
 539     bfd_mach_o_dylinker_command dylinker;
 540     bfd_mach_o_prebound_dylib_command prebound_dylib;
 541     bfd_mach_o_uuid_command uuid;
 542   }
 543   command;
 544 }
 545 bfd_mach_o_load_command;
 546
 547 typedef struct mach_o_data_struct
 548 {
 549   bfd_mach_o_header header;
 550   bfd_mach_o_load_command *commands;
 551   unsigned long nsymbols;
 552   asymbol *symbols;
 553   unsigned long nsects;
 554   bfd_mach_o_section **sections;
 555   bfd *ibfd;
 556 }
 557 mach_o_data_struct;
 558
 559 #define bfd_get_mach_o_data(abfd) ((abfd)->tdata.mach_o_data)
 560
 561 typedef struct mach_o_data_struct bfd_mach_o_data_struct;
 562
 563 bfd_boolean bfd_mach_o_valid (bfd *);
 564 int bfd_mach_o_scan_read_symtab_symbol (bfd *, bfd_mach_o_symtab_command *, asymbol *, unsigned long);
 565 int bfd_mach_o_scan_read_symtab_strtab (bfd *, bfd_mach_o_symtab_command *);
 566 int bfd_mach_o_scan_read_symtab_symbols (bfd *, bfd_mach_o_symtab_command *);
 567 int bfd_mach_o_scan_read_dysymtab_symbol (bfd *, bfd_mach_o_dysymtab_command *, bfd_mach_o_symtab_command *, asymbol *, unsigned long);
 568 int bfd_mach_o_scan_start_address (bfd *);
 569 int bfd_mach_o_scan (bfd *, bfd_mach_o_header *, bfd_mach_o_data_struct *);
 570 bfd_boolean bfd_mach_o_mkobject_init (bfd *);
 571 const bfd_target *bfd_mach_o_object_p (bfd *);
 572 const bfd_target *bfd_mach_o_core_p (bfd *);
 573 const bfd_target *bfd_mach_o_archive_p (bfd *);
 574 bfd *bfd_mach_o_openr_next_archived_file (bfd *, bfd *);
 575 int bfd_mach_o_lookup_section (bfd *, asection *, bfd_mach_o_load_command **, bfd_mach_o_section **);
 576 int bfd_mach_o_lookup_command (bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **);
 577 bfd_boolean bfd_mach_o_write_contents (bfd *);
 578 bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data (bfd *, asymbol *,
 579                                                      bfd *, asymbol *);
 580 bfd_boolean bfd_mach_o_bfd_copy_private_section_data (bfd *, asection *,
 581                                                       bfd *, asection *);
 582 bfd_boolean bfd_mach_o_bfd_copy_private_bfd_data (bfd *, bfd *);
 583 long bfd_mach_o_get_symtab_upper_bound (bfd *);
 584 long bfd_mach_o_canonicalize_symtab (bfd *, asymbol **);
 585 asymbol *bfd_mach_o_make_empty_symbol (bfd *);
 586 void bfd_mach_o_get_symbol_info (bfd *, asymbol *, symbol_info *);
 587 void bfd_mach_o_print_symbol (bfd *, PTR, asymbol *, bfd_print_symbol_type);
 588 bfd_boolean bfd_mach_o_bfd_print_private_bfd_data (bfd *, PTR);
 589 int bfd_mach_o_sizeof_headers (bfd *, struct bfd_link_info *);
 590 unsigned long bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type);
 591 int bfd_mach_o_core_fetch_environment (bfd *, unsigned char **, unsigned int *);
 592 char *bfd_mach_o_core_file_failing_command (bfd *);
 593 int bfd_mach_o_core_file_failing_signal (bfd *);
 594 bfd_boolean bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *);
 595 bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *);
 596 const bfd_target *bfd_mach_o_header_p (bfd *, bfd_mach_o_filetype,
 597                                        bfd_mach_o_cpu_type);
 598 bfd_boolean bfd_mach_o_build_commands (bfd *abfd);
 599 bfd_boolean bfd_mach_o_set_section_contents (bfd *, asection *, const void *,
 600                                              file_ptr, bfd_size_type);
 601
 602 extern const bfd_target mach_o_be_vec;
 603 extern const bfd_target mach_o_le_vec;
 604 extern const bfd_target mach_o_fat_vec;
 605
 606 #endif /* _BFD_MACH_O_H_ */