906 lines
34 KiB
C
906 lines
34 KiB
C
/* Mach-O support for BFD.
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Copyright 1999, 2000, 2001, 2002, 2003, 2005, 2007, 2008, 2009
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Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef _BFD_MACH_O_H_
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#define _BFD_MACH_O_H_
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#include "bfd.h"
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/* Symbol n_type values. */
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#define BFD_MACH_O_N_STAB 0xe0 /* If any of these bits set, a symbolic debugging entry. */
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#define BFD_MACH_O_N_PEXT 0x10 /* Private external symbol bit. */
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#define BFD_MACH_O_N_TYPE 0x0e /* Mask for the type bits. */
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#define BFD_MACH_O_N_EXT 0x01 /* External symbol bit, set for external symbols. */
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#define BFD_MACH_O_N_UNDF 0x00 /* Undefined, n_sect == NO_SECT. */
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#define BFD_MACH_O_N_ABS 0x02 /* Absolute, n_sect == NO_SECT. */
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#define BFD_MACH_O_N_INDR 0x0a /* Indirect. */
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#define BFD_MACH_O_N_PBUD 0x0c /* Prebound undefined (defined in a dylib). */
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#define BFD_MACH_O_N_SECT 0x0e /* Defined in section number n_sect. */
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#define BFD_MACH_O_NO_SECT 0 /* Symbol not in any section of the image. */
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/* Symbol n_desc reference flags. */
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#define BFD_MACH_O_REFERENCE_MASK 0x0f
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#define BFD_MACH_O_REFERENCE_FLAG_UNDEFINED_NON_LAZY 0x00
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#define BFD_MACH_O_REFERENCE_FLAG_UNDEFINED_LAZY 0x01
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#define BFD_MACH_O_REFERENCE_FLAG_DEFINED 0x02
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#define BFD_MACH_O_REFERENCE_FLAG_PRIVATE_DEFINED 0x03
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#define BFD_MACH_O_REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY 0x04
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#define BFD_MACH_O_REFERENCE_FLAG_PRIVATE_UNDEFINED_LAZY 0x05
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#define BFD_MACH_O_REFERENCED_DYNAMICALLY 0x10
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#define BFD_MACH_O_N_DESC_DISCARDED 0x20
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#define BFD_MACH_O_N_NO_DEAD_STRIP 0x20
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#define BFD_MACH_O_N_WEAK_REF 0x40
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#define BFD_MACH_O_N_WEAK_DEF 0x80
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typedef enum bfd_mach_o_mach_header_magic
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{
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BFD_MACH_O_MH_MAGIC = 0xfeedface,
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BFD_MACH_O_MH_CIGAM = 0xcefaedfe,
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BFD_MACH_O_MH_MAGIC_64 = 0xfeedfacf,
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BFD_MACH_O_MH_CIGAM_64 = 0xcffaedfe
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}
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bfd_mach_o_mach_header_magic;
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typedef enum bfd_mach_o_ppc_thread_flavour
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{
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BFD_MACH_O_PPC_THREAD_STATE = 1,
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BFD_MACH_O_PPC_FLOAT_STATE = 2,
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BFD_MACH_O_PPC_EXCEPTION_STATE = 3,
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BFD_MACH_O_PPC_VECTOR_STATE = 4,
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BFD_MACH_O_PPC_THREAD_STATE64 = 5,
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BFD_MACH_O_PPC_EXCEPTION_STATE64 = 6,
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BFD_MACH_O_PPC_THREAD_STATE_NONE = 7
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}
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bfd_mach_o_ppc_thread_flavour;
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/* Defined in <mach/i386/thread_status.h> */
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typedef enum bfd_mach_o_i386_thread_flavour
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{
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BFD_MACH_O_x86_THREAD_STATE32 = 1,
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BFD_MACH_O_x86_FLOAT_STATE32 = 2,
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BFD_MACH_O_x86_EXCEPTION_STATE32 = 3,
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BFD_MACH_O_x86_THREAD_STATE64 = 4,
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BFD_MACH_O_x86_FLOAT_STATE64 = 5,
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BFD_MACH_O_x86_EXCEPTION_STATE64 = 6,
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BFD_MACH_O_x86_THREAD_STATE = 7,
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BFD_MACH_O_x86_FLOAT_STATE = 8,
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BFD_MACH_O_x86_EXCEPTION_STATE = 9,
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BFD_MACH_O_x86_DEBUG_STATE32 = 10,
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BFD_MACH_O_x86_DEBUG_STATE64 = 11,
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BFD_MACH_O_x86_DEBUG_STATE = 12,
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BFD_MACH_O_x86_THREAD_STATE_NONE = 13
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}
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bfd_mach_o_i386_thread_flavour;
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#define BFD_MACH_O_LC_REQ_DYLD 0x80000000
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typedef enum bfd_mach_o_load_command_type
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{
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BFD_MACH_O_LC_SEGMENT = 0x1, /* File segment to be mapped. */
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BFD_MACH_O_LC_SYMTAB = 0x2, /* Link-edit stab symbol table info (obsolete). */
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BFD_MACH_O_LC_SYMSEG = 0x3, /* Link-edit gdb symbol table info. */
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BFD_MACH_O_LC_THREAD = 0x4, /* Thread. */
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BFD_MACH_O_LC_UNIXTHREAD = 0x5, /* UNIX thread (includes a stack). */
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BFD_MACH_O_LC_LOADFVMLIB = 0x6, /* Load a fixed VM shared library. */
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BFD_MACH_O_LC_IDFVMLIB = 0x7, /* Fixed VM shared library id. */
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BFD_MACH_O_LC_IDENT = 0x8, /* Object identification information (obsolete). */
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BFD_MACH_O_LC_FVMFILE = 0x9, /* Fixed VM file inclusion. */
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BFD_MACH_O_LC_PREPAGE = 0xa, /* Prepage command (internal use). */
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BFD_MACH_O_LC_DYSYMTAB = 0xb, /* Dynamic link-edit symbol table info. */
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BFD_MACH_O_LC_LOAD_DYLIB = 0xc, /* Load a dynamically linked shared library. */
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BFD_MACH_O_LC_ID_DYLIB = 0xd, /* Dynamically linked shared lib identification. */
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BFD_MACH_O_LC_LOAD_DYLINKER = 0xe, /* Load a dynamic linker. */
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BFD_MACH_O_LC_ID_DYLINKER = 0xf, /* Dynamic linker identification. */
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BFD_MACH_O_LC_PREBOUND_DYLIB = 0x10, /* Modules prebound for a dynamically. */
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BFD_MACH_O_LC_ROUTINES = 0x11, /* Image routines. */
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BFD_MACH_O_LC_SUB_FRAMEWORK = 0x12, /* Sub framework. */
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BFD_MACH_O_LC_SUB_UMBRELLA = 0x13, /* Sub umbrella. */
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BFD_MACH_O_LC_SUB_CLIENT = 0x14, /* Sub client. */
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BFD_MACH_O_LC_SUB_LIBRARY = 0x15, /* Sub library. */
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BFD_MACH_O_LC_TWOLEVEL_HINTS = 0x16, /* Two-level namespace lookup hints. */
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BFD_MACH_O_LC_PREBIND_CKSUM = 0x17, /* Prebind checksum. */
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/* Load a dynamically linked shared library that is allowed to be
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missing (weak). */
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BFD_MACH_O_LC_LOAD_WEAK_DYLIB = 0x18,
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BFD_MACH_O_LC_SEGMENT_64 = 0x19, /* 64-bit segment of this file to be
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mapped. */
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BFD_MACH_O_LC_ROUTINES_64 = 0x1a, /* Address of the dyld init routine
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in a dylib. */
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BFD_MACH_O_LC_UUID = 0x1b, /* 128-bit UUID of the executable. */
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BFD_MACH_O_LC_RPATH = 0x1c, /* Run path addiions. */
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BFD_MACH_O_LC_CODE_SIGNATURE = 0x1d, /* Local of code signature. */
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BFD_MACH_O_LC_SEGMENT_SPLIT_INFO = 0x1e, /* Local of info to split seg. */
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BFD_MACH_O_LC_REEXPORT_DYLIB = 0x1f, /* Load and re-export lib. */
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BFD_MACH_O_LC_LAZY_LOAD_DYLIB = 0x20, /* Delay load of lib until use. */
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BFD_MACH_O_LC_ENCRYPTION_INFO = 0x21, /* Encrypted segment info. */
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BFD_MACH_O_LC_DYLD_INFO = 0x22 /* Compressed dyld information. */
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}
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bfd_mach_o_load_command_type;
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#define BFD_MACH_O_CPU_IS64BIT 0x1000000
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typedef enum bfd_mach_o_cpu_type
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{
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BFD_MACH_O_CPU_TYPE_VAX = 1,
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BFD_MACH_O_CPU_TYPE_MC680x0 = 6,
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BFD_MACH_O_CPU_TYPE_I386 = 7,
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BFD_MACH_O_CPU_TYPE_MIPS = 8,
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BFD_MACH_O_CPU_TYPE_MC98000 = 10,
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BFD_MACH_O_CPU_TYPE_HPPA = 11,
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BFD_MACH_O_CPU_TYPE_ARM = 12,
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BFD_MACH_O_CPU_TYPE_MC88000 = 13,
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BFD_MACH_O_CPU_TYPE_SPARC = 14,
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BFD_MACH_O_CPU_TYPE_I860 = 15,
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BFD_MACH_O_CPU_TYPE_ALPHA = 16,
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BFD_MACH_O_CPU_TYPE_POWERPC = 18,
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BFD_MACH_O_CPU_TYPE_POWERPC_64 = (BFD_MACH_O_CPU_TYPE_POWERPC | BFD_MACH_O_CPU_IS64BIT),
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BFD_MACH_O_CPU_TYPE_X86_64 = (BFD_MACH_O_CPU_TYPE_I386 | BFD_MACH_O_CPU_IS64BIT)
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}
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bfd_mach_o_cpu_type;
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typedef enum bfd_mach_o_cpu_subtype
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{
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BFD_MACH_O_CPU_SUBTYPE_X86_ALL = 3
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}
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bfd_mach_o_cpu_subtype;
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typedef enum bfd_mach_o_filetype
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{
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BFD_MACH_O_MH_OBJECT = 0x01,
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BFD_MACH_O_MH_EXECUTE = 0x02,
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BFD_MACH_O_MH_FVMLIB = 0x03,
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BFD_MACH_O_MH_CORE = 0x04,
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BFD_MACH_O_MH_PRELOAD = 0x05,
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BFD_MACH_O_MH_DYLIB = 0x06,
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BFD_MACH_O_MH_DYLINKER = 0x07,
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BFD_MACH_O_MH_BUNDLE = 0x08,
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BFD_MACH_O_MH_DYLIB_STUB = 0x09,
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BFD_MACH_O_MH_DSYM = 0x0a,
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BFD_MACH_O_MH_KEXT_BUNDLE = 0x0b
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}
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bfd_mach_o_filetype;
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typedef enum bfd_mach_o_header_flags
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{
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BFD_MACH_O_MH_NOUNDEFS = 0x000001,
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BFD_MACH_O_MH_INCRLINK = 0x000002,
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BFD_MACH_O_MH_DYLDLINK = 0x000004,
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BFD_MACH_O_MH_BINDATLOAD = 0x000008,
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BFD_MACH_O_MH_PREBOUND = 0x000010,
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BFD_MACH_O_MH_SPLIT_SEGS = 0x000020,
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BFD_MACH_O_MH_LAZY_INIT = 0x000040,
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BFD_MACH_O_MH_TWOLEVEL = 0x000080,
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BFD_MACH_O_MH_FORCE_FLAT = 0x000100,
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BFD_MACH_O_MH_NOMULTIDEFS = 0x000200,
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BFD_MACH_O_MH_NOFIXPREBINDING = 0x000400,
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BFD_MACH_O_MH_PREBINDABLE = 0x000800,
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BFD_MACH_O_MH_ALLMODSBOUND = 0x001000,
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BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS = 0x002000,
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BFD_MACH_O_MH_CANONICAL = 0x004000,
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BFD_MACH_O_MH_WEAK_DEFINES = 0x008000,
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BFD_MACH_O_MH_BINDS_TO_WEAK = 0x010000,
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BFD_MACH_O_MH_ALLOW_STACK_EXECUTION = 0x020000,
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BFD_MACH_O_MH_ROOT_SAFE = 0x040000,
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BFD_MACH_O_MH_SETUID_SAFE = 0x080000,
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BFD_MACH_O_MH_NO_REEXPORTED_DYLIBS = 0x100000,
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BFD_MACH_O_MH_PIE = 0x200000
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}
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bfd_mach_o_header_flags;
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/* Constants for the type of a section. */
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typedef enum bfd_mach_o_section_type
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{
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/* Regular section. */
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BFD_MACH_O_S_REGULAR = 0x0,
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/* Zero fill on demand section. */
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BFD_MACH_O_S_ZEROFILL = 0x1,
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/* Section with only literal C strings. */
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BFD_MACH_O_S_CSTRING_LITERALS = 0x2,
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/* Section with only 4 byte literals. */
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BFD_MACH_O_S_4BYTE_LITERALS = 0x3,
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/* Section with only 8 byte literals. */
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BFD_MACH_O_S_8BYTE_LITERALS = 0x4,
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/* Section with only pointers to literals. */
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BFD_MACH_O_S_LITERAL_POINTERS = 0x5,
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/* For the two types of symbol pointers sections and the symbol stubs
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section they have indirect symbol table entries. For each of the
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entries in the section the indirect symbol table entries, in
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corresponding order in the indirect symbol table, start at the index
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stored in the reserved1 field of the section structure. Since the
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indirect symbol table entries correspond to the entries in the
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section the number of indirect symbol table entries is inferred from
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the size of the section divided by the size of the entries in the
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section. For symbol pointers sections the size of the entries in
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the section is 4 bytes and for symbol stubs sections the byte size
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of the stubs is stored in the reserved2 field of the section
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structure. */
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/* Section with only non-lazy symbol pointers. */
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BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS = 0x6,
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/* Section with only lazy symbol pointers. */
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BFD_MACH_O_S_LAZY_SYMBOL_POINTERS = 0x7,
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/* Section with only symbol stubs, byte size of stub in the reserved2
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field. */
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BFD_MACH_O_S_SYMBOL_STUBS = 0x8,
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/* Section with only function pointers for initialization. */
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BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS = 0x9,
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/* Section with only function pointers for termination. */
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BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS = 0xa,
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/* Section contains symbols that are coalesced by the linkers. */
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BFD_MACH_O_S_COALESCED = 0xb,
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/* Zero fill on demand section (possibly larger than 4 GB). */
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BFD_MACH_O_S_GB_ZEROFILL = 0xc,
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/* Section with only pairs of function pointers for interposing. */
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BFD_MACH_O_S_INTERPOSING = 0xd,
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/* Section with only 16 byte literals. */
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BFD_MACH_O_S_16BYTE_LITERALS = 0xe,
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/* Section contains DTrace Object Format. */
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BFD_MACH_O_S_DTRACE_DOF = 0xf,
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/* Section with only lazy symbol pointers to lazy loaded dylibs. */
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BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS = 0x10
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}
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bfd_mach_o_section_type;
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/* The flags field of a section structure is separated into two parts a section
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type and section attributes. The section types are mutually exclusive (it
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can only have one type) but the section attributes are not (it may have more
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than one attribute). */
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#define BFD_MACH_O_SECTION_TYPE_MASK 0x000000ff
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/* Constants for the section attributes part of the flags field of a section
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structure. */
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#define BFD_MACH_O_SECTION_ATTRIBUTES_MASK 0xffffff00
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/* System setable attributes. */
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#define BFD_MACH_O_SECTION_ATTRIBUTES_SYS 0x00ffff00
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/* User attributes. */
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#define BFD_MACH_O_SECTION_ATTRIBUTES_USR 0xff000000
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typedef enum bfd_mach_o_section_attribute
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{
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/* Section has local relocation entries. */
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BFD_MACH_O_S_ATTR_LOC_RELOC = 0x00000100,
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/* Section has external relocation entries. */
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BFD_MACH_O_S_ATTR_EXT_RELOC = 0x00000200,
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/* Section contains some machine instructions. */
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BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS = 0x00000400,
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/* A debug section. */
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BFD_MACH_O_S_ATTR_DEBUG = 0x02000000,
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/* Used with i386 stubs. */
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BFD_MACH_O_S_SELF_MODIFYING_CODE = 0x04000000,
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/* Blocks are live if they reference live blocks. */
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BFD_MACH_O_S_ATTR_LIVE_SUPPORT = 0x08000000,
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/* No dead stripping. */
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP = 0x10000000,
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/* Section symbols can be stripped in files with MH_DYLDLINK flag. */
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BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS = 0x20000000,
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/* Section contains coalesced symbols that are not to be in the TOC of an
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archive. */
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BFD_MACH_O_S_ATTR_NO_TOC = 0x40000000,
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/* Section contains only true machine instructions. */
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BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS = 0x80000000
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}
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bfd_mach_o_section_attribute;
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typedef struct bfd_mach_o_header
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{
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unsigned long magic;
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unsigned long cputype;
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unsigned long cpusubtype;
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unsigned long filetype;
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unsigned long ncmds;
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unsigned long sizeofcmds;
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unsigned long flags;
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unsigned int reserved;
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/* Version 1: 32 bits, version 2: 64 bits. */
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unsigned int version;
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enum bfd_endian byteorder;
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}
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bfd_mach_o_header;
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#define BFD_MACH_O_HEADER_SIZE 28
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#define BFD_MACH_O_HEADER_64_SIZE 32
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typedef struct bfd_mach_o_section
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{
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asection *bfdsection;
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char sectname[16 + 1];
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char segname[16 + 1];
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bfd_vma addr;
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bfd_vma size;
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bfd_vma offset;
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unsigned long align;
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bfd_vma reloff;
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unsigned long nreloc;
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unsigned long flags;
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unsigned long reserved1;
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unsigned long reserved2;
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unsigned long reserved3;
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}
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bfd_mach_o_section;
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#define BFD_MACH_O_SECTION_SIZE 68
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#define BFD_MACH_O_SECTION_64_SIZE 80
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typedef struct bfd_mach_o_segment_command
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{
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char segname[16 + 1];
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bfd_vma vmaddr;
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bfd_vma vmsize;
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bfd_vma fileoff;
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unsigned long filesize;
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unsigned long maxprot; /* Maximum permitted protection. */
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unsigned long initprot; /* Initial protection. */
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unsigned long nsects;
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unsigned long flags;
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bfd_mach_o_section *sections;
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}
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bfd_mach_o_segment_command;
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#define BFD_MACH_O_LC_SEGMENT_SIZE 56
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#define BFD_MACH_O_LC_SEGMENT_64_SIZE 72
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/* Protection flags. */
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#define BFD_MACH_O_PROT_READ 0x01
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#define BFD_MACH_O_PROT_WRITE 0x02
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#define BFD_MACH_O_PROT_EXECUTE 0x04
|
|
|
|
/* Generic relocation types (used by i386). */
|
|
#define BFD_MACH_O_GENERIC_RELOC_VANILLA 0
|
|
#define BFD_MACH_O_GENERIC_RELOC_PAIR 1
|
|
#define BFD_MACH_O_GENERIC_RELOC_SECTDIFF 2
|
|
#define BFD_MACH_O_GENERIC_RELOC_PB_LA_PTR 3
|
|
#define BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF 4
|
|
|
|
/* Size of a relocation entry. */
|
|
#define BFD_MACH_O_RELENT_SIZE 8
|
|
|
|
/* Fields for a normal (non-scattered) entry. */
|
|
#define BFD_MACH_O_R_PCREL 0x01000000
|
|
#define BFD_MACH_O_GET_R_LENGTH(s) (((s) >> 25) & 0x3)
|
|
#define BFD_MACH_O_R_EXTERN 0x08000000
|
|
#define BFD_MACH_O_GET_R_TYPE(s) (((s) >> 28) & 0x0f)
|
|
#define BFD_MACH_O_GET_R_SYMBOLNUM(s) ((s) & 0x00ffffff)
|
|
#define BFD_MACH_O_SET_R_LENGTH(l) (((l) & 0x3) << 25)
|
|
#define BFD_MACH_O_SET_R_TYPE(t) (((t) & 0xf) << 28)
|
|
#define BFD_MACH_O_SET_R_SYMBOLNUM(s) ((s) & 0x00ffffff)
|
|
|
|
/* Fields for a scattered entry. */
|
|
#define BFD_MACH_O_SR_SCATTERED 0x80000000
|
|
#define BFD_MACH_O_SR_PCREL 0x40000000
|
|
#define BFD_MACH_O_GET_SR_LENGTH(s) (((s) >> 28) & 0x3)
|
|
#define BFD_MACH_O_GET_SR_TYPE(s) (((s) >> 24) & 0x0f)
|
|
#define BFD_MACH_O_GET_SR_ADDRESS(s) ((s) & 0x00ffffff)
|
|
#define BFD_MACH_O_SET_SR_LENGTH(l) (((l) & 0x3) << 28)
|
|
#define BFD_MACH_O_SET_SR_TYPE(t) (((t) & 0xf) << 24)
|
|
#define BFD_MACH_O_SET_SR_ADDRESS(s) ((s) & 0x00ffffff)
|
|
|
|
/* Expanded internal representation of a relocation entry. */
|
|
typedef struct bfd_mach_o_reloc_info
|
|
{
|
|
bfd_vma r_address;
|
|
bfd_vma r_value;
|
|
unsigned int r_scattered : 1;
|
|
unsigned int r_type : 4;
|
|
unsigned int r_pcrel : 1;
|
|
unsigned int r_length : 2;
|
|
unsigned int r_extern : 1;
|
|
}
|
|
bfd_mach_o_reloc_info;
|
|
|
|
typedef struct bfd_mach_o_asymbol
|
|
{
|
|
/* The actual symbol which the rest of BFD works with. */
|
|
asymbol symbol;
|
|
|
|
/* Fields from Mach-O symbol. */
|
|
unsigned char n_type;
|
|
unsigned char n_sect;
|
|
unsigned short n_desc;
|
|
}
|
|
bfd_mach_o_asymbol;
|
|
#define BFD_MACH_O_NLIST_SIZE 12
|
|
#define BFD_MACH_O_NLIST_64_SIZE 16
|
|
|
|
typedef struct bfd_mach_o_symtab_command
|
|
{
|
|
unsigned int symoff;
|
|
unsigned int nsyms;
|
|
unsigned int stroff;
|
|
unsigned int strsize;
|
|
bfd_mach_o_asymbol *symbols;
|
|
char *strtab;
|
|
}
|
|
bfd_mach_o_symtab_command;
|
|
|
|
/* This is the second set of the symbolic information which is used to support
|
|
the data structures for the dynamically link editor.
|
|
|
|
The original set of symbolic information in the symtab_command which contains
|
|
the symbol and string tables must also be present when this load command is
|
|
present. When this load command is present the symbol table is organized
|
|
into three groups of symbols:
|
|
local symbols (static and debugging symbols) - grouped by module
|
|
defined external symbols - grouped by module (sorted by name if not lib)
|
|
undefined external symbols (sorted by name)
|
|
In this load command there are offsets and counts to each of the three groups
|
|
of symbols.
|
|
|
|
This load command contains a the offsets and sizes of the following new
|
|
symbolic information tables:
|
|
table of contents
|
|
module table
|
|
reference symbol table
|
|
indirect symbol table
|
|
The first three tables above (the table of contents, module table and
|
|
reference symbol table) are only present if the file is a dynamically linked
|
|
shared library. For executable and object modules, which are files
|
|
containing only one module, the information that would be in these three
|
|
tables is determined as follows:
|
|
table of contents - the defined external symbols are sorted by name
|
|
module table - the file contains only one module so everything in the
|
|
file is part of the module.
|
|
reference symbol table - is the defined and undefined external symbols
|
|
|
|
For dynamically linked shared library files this load command also contains
|
|
offsets and sizes to the pool of relocation entries for all sections
|
|
separated into two groups:
|
|
external relocation entries
|
|
local relocation entries
|
|
For executable and object modules the relocation entries continue to hang
|
|
off the section structures. */
|
|
|
|
typedef struct bfd_mach_o_dylib_module
|
|
{
|
|
/* Index into the string table indicating the name of the module. */
|
|
unsigned long module_name_idx;
|
|
char *module_name;
|
|
|
|
/* Index into the symbol table of the first defined external symbol provided
|
|
by the module. */
|
|
unsigned long iextdefsym;
|
|
|
|
/* Number of external symbols provided by this module. */
|
|
unsigned long nextdefsym;
|
|
|
|
/* Index into the external reference table of the first entry
|
|
provided by this module. */
|
|
unsigned long irefsym;
|
|
|
|
/* Number of external reference entries provided by this module. */
|
|
unsigned long nrefsym;
|
|
|
|
/* Index into the symbol table of the first local symbol provided by this
|
|
module. */
|
|
unsigned long ilocalsym;
|
|
|
|
/* Number of local symbols provided by this module. */
|
|
unsigned long nlocalsym;
|
|
|
|
/* Index into the external relocation table of the first entry provided
|
|
by this module. */
|
|
unsigned long iextrel;
|
|
|
|
/* Number of external relocation entries provided by this module. */
|
|
unsigned long nextrel;
|
|
|
|
/* Index in the module initialization section to the pointers for this
|
|
module. */
|
|
unsigned short iinit;
|
|
|
|
/* Index in the module termination section to the pointers for this
|
|
module. */
|
|
unsigned short iterm;
|
|
|
|
/* Number of pointers in the module initialization for this module. */
|
|
unsigned short ninit;
|
|
|
|
/* Number of pointers in the module termination for this module. */
|
|
unsigned short nterm;
|
|
|
|
/* Number of data byte for this module that are used in the __module_info
|
|
section of the __OBJC segment. */
|
|
unsigned long objc_module_info_size;
|
|
|
|
/* Statically linked address of the start of the data for this module
|
|
in the __module_info section of the __OBJC_segment. */
|
|
bfd_vma objc_module_info_addr;
|
|
}
|
|
bfd_mach_o_dylib_module;
|
|
#define BFD_MACH_O_DYLIB_MODULE_SIZE 52
|
|
#define BFD_MACH_O_DYLIB_MODULE_64_SIZE 56
|
|
|
|
typedef struct bfd_mach_o_dylib_table_of_content
|
|
{
|
|
/* Index into the symbol table to the defined external symbol. */
|
|
unsigned long symbol_index;
|
|
|
|
/* Index into the module table to the module for this entry. */
|
|
unsigned long module_index;
|
|
}
|
|
bfd_mach_o_dylib_table_of_content;
|
|
#define BFD_MACH_O_TABLE_OF_CONTENT_SIZE 8
|
|
|
|
typedef struct bfd_mach_o_dylib_reference
|
|
{
|
|
/* Index into the symbol table for the symbol being referenced. */
|
|
unsigned long isym;
|
|
|
|
/* Type of the reference being made (use REFERENCE_FLAGS constants). */
|
|
unsigned long flags;
|
|
}
|
|
bfd_mach_o_dylib_reference;
|
|
#define BFD_MACH_O_REFERENCE_SIZE 4
|
|
|
|
typedef struct bfd_mach_o_dysymtab_command
|
|
{
|
|
/* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command
|
|
are grouped into the following three groups:
|
|
local symbols (further grouped by the module they are from)
|
|
defined external symbols (further grouped by the module they are from)
|
|
undefined symbols
|
|
|
|
The local symbols are used only for debugging. The dynamic binding
|
|
process may have to use them to indicate to the debugger the local
|
|
symbols for a module that is being bound.
|
|
|
|
The last two groups are used by the dynamic binding process to do the
|
|
binding (indirectly through the module table and the reference symbol
|
|
table when this is a dynamically linked shared library file). */
|
|
|
|
unsigned long ilocalsym; /* Index to local symbols. */
|
|
unsigned long nlocalsym; /* Number of local symbols. */
|
|
unsigned long iextdefsym; /* Index to externally defined symbols. */
|
|
unsigned long nextdefsym; /* Number of externally defined symbols. */
|
|
unsigned long iundefsym; /* Index to undefined symbols. */
|
|
unsigned long nundefsym; /* Number of undefined symbols. */
|
|
|
|
/* For the for the dynamic binding process to find which module a symbol
|
|
is defined in the table of contents is used (analogous to the ranlib
|
|
structure in an archive) which maps defined external symbols to modules
|
|
they are defined in. This exists only in a dynamically linked shared
|
|
library file. For executable and object modules the defined external
|
|
symbols are sorted by name and is use as the table of contents. */
|
|
|
|
unsigned long tocoff; /* File offset to table of contents. */
|
|
unsigned long ntoc; /* Number of entries in table of contents. */
|
|
|
|
/* To support dynamic binding of "modules" (whole object files) the symbol
|
|
table must reflect the modules that the file was created from. This is
|
|
done by having a module table that has indexes and counts into the merged
|
|
tables for each module. The module structure that these two entries
|
|
refer to is described below. This exists only in a dynamically linked
|
|
shared library file. For executable and object modules the file only
|
|
contains one module so everything in the file belongs to the module. */
|
|
|
|
unsigned long modtaboff; /* File offset to module table. */
|
|
unsigned long nmodtab; /* Number of module table entries. */
|
|
|
|
/* To support dynamic module binding the module structure for each module
|
|
indicates the external references (defined and undefined) each module
|
|
makes. For each module there is an offset and a count into the
|
|
reference symbol table for the symbols that the module references.
|
|
This exists only in a dynamically linked shared library file. For
|
|
executable and object modules the defined external symbols and the
|
|
undefined external symbols indicates the external references. */
|
|
|
|
unsigned long extrefsymoff; /* Offset to referenced symbol table. */
|
|
unsigned long nextrefsyms; /* Number of referenced symbol table entries. */
|
|
|
|
/* The sections that contain "symbol pointers" and "routine stubs" have
|
|
indexes and (implied counts based on the size of the section and fixed
|
|
size of the entry) into the "indirect symbol" table for each pointer
|
|
and stub. For every section of these two types the index into the
|
|
indirect symbol table is stored in the section header in the field
|
|
reserved1. An indirect symbol table entry is simply a 32bit index into
|
|
the symbol table to the symbol that the pointer or stub is referring to.
|
|
The indirect symbol table is ordered to match the entries in the section. */
|
|
|
|
unsigned long indirectsymoff; /* File offset to the indirect symbol table. */
|
|
unsigned long nindirectsyms; /* Number of indirect symbol table entries. */
|
|
|
|
/* To support relocating an individual module in a library file quickly the
|
|
external relocation entries for each module in the library need to be
|
|
accessed efficiently. Since the relocation entries can't be accessed
|
|
through the section headers for a library file they are separated into
|
|
groups of local and external entries further grouped by module. In this
|
|
case the presents of this load command who's extreloff, nextrel,
|
|
locreloff and nlocrel fields are non-zero indicates that the relocation
|
|
entries of non-merged sections are not referenced through the section
|
|
structures (and the reloff and nreloc fields in the section headers are
|
|
set to zero).
|
|
|
|
Since the relocation entries are not accessed through the section headers
|
|
this requires the r_address field to be something other than a section
|
|
offset to identify the item to be relocated. In this case r_address is
|
|
set to the offset from the vmaddr of the first LC_SEGMENT command.
|
|
|
|
The relocation entries are grouped by module and the module table
|
|
entries have indexes and counts into them for the group of external
|
|
relocation entries for that the module.
|
|
|
|
For sections that are merged across modules there must not be any
|
|
remaining external relocation entries for them (for merged sections
|
|
remaining relocation entries must be local). */
|
|
|
|
unsigned long extreloff; /* Offset to external relocation entries. */
|
|
unsigned long nextrel; /* Number of external relocation entries. */
|
|
|
|
/* All the local relocation entries are grouped together (they are not
|
|
grouped by their module since they are only used if the object is moved
|
|
from it statically link edited address). */
|
|
|
|
unsigned long locreloff; /* Offset to local relocation entries. */
|
|
unsigned long nlocrel; /* Number of local relocation entries. */
|
|
|
|
bfd_mach_o_dylib_module *dylib_module;
|
|
bfd_mach_o_dylib_table_of_content *dylib_toc;
|
|
unsigned int *indirect_syms;
|
|
bfd_mach_o_dylib_reference *ext_refs;
|
|
}
|
|
bfd_mach_o_dysymtab_command;
|
|
|
|
/* An indirect symbol table entry is simply a 32bit index into the symbol table
|
|
to the symbol that the pointer or stub is refering to. Unless it is for a
|
|
non-lazy symbol pointer section for a defined symbol which strip(1) has
|
|
removed. In which case it has the value INDIRECT_SYMBOL_LOCAL. If the
|
|
symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that. */
|
|
|
|
#define BFD_MACH_O_INDIRECT_SYMBOL_LOCAL 0x80000000
|
|
#define BFD_MACH_O_INDIRECT_SYMBOL_ABS 0x40000000
|
|
#define BFD_MACH_O_INDIRECT_SYMBOL_SIZE 4
|
|
|
|
/* For LC_THREAD or LC_UNIXTHREAD. */
|
|
|
|
typedef struct bfd_mach_o_thread_flavour
|
|
{
|
|
unsigned long flavour;
|
|
unsigned long offset;
|
|
unsigned long size;
|
|
}
|
|
bfd_mach_o_thread_flavour;
|
|
|
|
typedef struct bfd_mach_o_thread_command
|
|
{
|
|
unsigned long nflavours;
|
|
bfd_mach_o_thread_flavour *flavours;
|
|
asection *section;
|
|
}
|
|
bfd_mach_o_thread_command;
|
|
|
|
/* For LC_LOAD_DYLINKER and LC_ID_DYLINKER. */
|
|
|
|
typedef struct bfd_mach_o_dylinker_command
|
|
{
|
|
unsigned long name_offset; /* Offset to library's path name. */
|
|
unsigned long name_len; /* Offset to library's path name. */
|
|
char *name_str;
|
|
}
|
|
bfd_mach_o_dylinker_command;
|
|
|
|
/* For LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_ID_DYLIB
|
|
or LC_REEXPORT_DYLIB. */
|
|
|
|
typedef struct bfd_mach_o_dylib_command
|
|
{
|
|
unsigned long name_offset; /* Offset to library's path name. */
|
|
unsigned long name_len; /* Offset to library's path name. */
|
|
unsigned long timestamp; /* Library's build time stamp. */
|
|
unsigned long current_version; /* Library's current version number. */
|
|
unsigned long compatibility_version; /* Library's compatibility vers number. */
|
|
char *name_str;
|
|
}
|
|
bfd_mach_o_dylib_command;
|
|
|
|
/* For LC_PREBOUND_DYLIB. */
|
|
|
|
typedef struct bfd_mach_o_prebound_dylib_command
|
|
{
|
|
unsigned long name; /* Library's path name. */
|
|
unsigned long nmodules; /* Number of modules in library. */
|
|
unsigned long linked_modules; /* Bit vector of linked modules. */
|
|
}
|
|
bfd_mach_o_prebound_dylib_command;
|
|
|
|
/* For LC_UUID. */
|
|
|
|
typedef struct bfd_mach_o_uuid_command
|
|
{
|
|
unsigned char uuid[16];
|
|
asection *section;
|
|
}
|
|
bfd_mach_o_uuid_command;
|
|
|
|
/* For LC_CODE_SIGNATURE or LC_SEGMENT_SPLIT_INFO. */
|
|
|
|
typedef struct bfd_mach_o_linkedit_command
|
|
{
|
|
unsigned long dataoff;
|
|
unsigned long datasize;
|
|
}
|
|
bfd_mach_o_linkedit_command;
|
|
|
|
typedef struct bfd_mach_o_str_command
|
|
{
|
|
unsigned long stroff;
|
|
unsigned long str_len;
|
|
char *str;
|
|
}
|
|
bfd_mach_o_str_command;
|
|
|
|
typedef struct bfd_mach_o_dyld_info_command
|
|
{
|
|
/* File offset and size to rebase info. */
|
|
unsigned int rebase_off;
|
|
unsigned int rebase_size;
|
|
|
|
/* File offset and size of binding info. */
|
|
unsigned int bind_off;
|
|
unsigned int bind_size;
|
|
|
|
/* File offset and size of weak binding info. */
|
|
unsigned int weak_bind_off;
|
|
unsigned int weak_bind_size;
|
|
|
|
/* File offset and size of lazy binding info. */
|
|
unsigned int lazy_bind_off;
|
|
unsigned int lazy_bind_size;
|
|
|
|
/* File offset and size of export info. */
|
|
unsigned int export_off;
|
|
unsigned int export_size;
|
|
}
|
|
bfd_mach_o_dyld_info_command;
|
|
|
|
typedef struct bfd_mach_o_load_command
|
|
{
|
|
bfd_mach_o_load_command_type type;
|
|
bfd_boolean type_required;
|
|
unsigned int offset;
|
|
unsigned int len;
|
|
union
|
|
{
|
|
bfd_mach_o_segment_command segment;
|
|
bfd_mach_o_symtab_command symtab;
|
|
bfd_mach_o_dysymtab_command dysymtab;
|
|
bfd_mach_o_thread_command thread;
|
|
bfd_mach_o_dylib_command dylib;
|
|
bfd_mach_o_dylinker_command dylinker;
|
|
bfd_mach_o_prebound_dylib_command prebound_dylib;
|
|
bfd_mach_o_uuid_command uuid;
|
|
bfd_mach_o_linkedit_command linkedit;
|
|
bfd_mach_o_str_command str;
|
|
bfd_mach_o_dyld_info_command dyld_info;
|
|
}
|
|
command;
|
|
}
|
|
bfd_mach_o_load_command;
|
|
|
|
typedef struct mach_o_data_struct
|
|
{
|
|
/* Mach-O header. */
|
|
bfd_mach_o_header header;
|
|
/* Array of load commands (length is given by header.ncmds). */
|
|
bfd_mach_o_load_command *commands;
|
|
|
|
/* Flatten array of sections. The array is 0-based. */
|
|
unsigned long nsects;
|
|
bfd_mach_o_section **sections;
|
|
|
|
/* Used while writting: current length of the output file. This is used
|
|
to allocate space in the file. */
|
|
ufile_ptr filelen;
|
|
|
|
/* As symtab is referenced by other load command, it is handy to have
|
|
a direct access to it. Also it is not clearly stated, only one symtab
|
|
is expected. */
|
|
bfd_mach_o_symtab_command *symtab;
|
|
bfd_mach_o_dysymtab_command *dysymtab;
|
|
}
|
|
bfd_mach_o_data_struct;
|
|
|
|
/* Target specific routines. */
|
|
typedef struct bfd_mach_o_backend_data
|
|
{
|
|
bfd_boolean (*_bfd_mach_o_swap_reloc_in)(arelent *, bfd_mach_o_reloc_info *);
|
|
bfd_boolean (*_bfd_mach_o_swap_reloc_out)(arelent *, bfd_mach_o_reloc_info *);
|
|
bfd_boolean (*_bfd_mach_o_print_thread)(bfd *, bfd_mach_o_thread_flavour *,
|
|
void *, char *);
|
|
}
|
|
bfd_mach_o_backend_data;
|
|
|
|
#define bfd_mach_o_get_data(abfd) ((abfd)->tdata.mach_o_data)
|
|
#define bfd_mach_o_get_backend_data(abfd) \
|
|
((bfd_mach_o_backend_data*)(abfd)->xvec->backend_data)
|
|
|
|
bfd_boolean bfd_mach_o_valid (bfd *);
|
|
int bfd_mach_o_read_dysymtab_symbol (bfd *, bfd_mach_o_dysymtab_command *, bfd_mach_o_symtab_command *, bfd_mach_o_asymbol *, unsigned long);
|
|
int bfd_mach_o_scan_start_address (bfd *);
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int bfd_mach_o_scan (bfd *, bfd_mach_o_header *, bfd_mach_o_data_struct *);
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bfd_boolean bfd_mach_o_mkobject_init (bfd *);
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const bfd_target *bfd_mach_o_object_p (bfd *);
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const bfd_target *bfd_mach_o_core_p (bfd *);
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const bfd_target *bfd_mach_o_archive_p (bfd *);
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bfd *bfd_mach_o_openr_next_archived_file (bfd *, bfd *);
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int bfd_mach_o_lookup_section (bfd *, asection *, bfd_mach_o_load_command **, bfd_mach_o_section **);
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int bfd_mach_o_lookup_command (bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **);
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bfd_boolean bfd_mach_o_write_contents (bfd *);
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bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data (bfd *, asymbol *,
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bfd *, asymbol *);
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bfd_boolean bfd_mach_o_bfd_copy_private_section_data (bfd *, asection *,
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bfd *, asection *);
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bfd_boolean bfd_mach_o_bfd_copy_private_bfd_data (bfd *, bfd *);
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long bfd_mach_o_get_symtab_upper_bound (bfd *);
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long bfd_mach_o_canonicalize_symtab (bfd *, asymbol **);
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long bfd_mach_o_get_synthetic_symtab (bfd *, long, asymbol **, long,
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asymbol **, asymbol **ret);
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long bfd_mach_o_get_reloc_upper_bound (bfd *, asection *);
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long bfd_mach_o_canonicalize_reloc (bfd *, asection *, arelent **, asymbol **);
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long bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *);
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long bfd_mach_o_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **);
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asymbol *bfd_mach_o_make_empty_symbol (bfd *);
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void bfd_mach_o_get_symbol_info (bfd *, asymbol *, symbol_info *);
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void bfd_mach_o_print_symbol (bfd *, PTR, asymbol *, bfd_print_symbol_type);
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bfd_boolean bfd_mach_o_bfd_print_private_bfd_data (bfd *, PTR);
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int bfd_mach_o_sizeof_headers (bfd *, struct bfd_link_info *);
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unsigned long bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type);
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int bfd_mach_o_core_fetch_environment (bfd *, unsigned char **, unsigned int *);
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char *bfd_mach_o_core_file_failing_command (bfd *);
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int bfd_mach_o_core_file_failing_signal (bfd *);
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bfd_boolean bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *);
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bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *);
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const bfd_target *bfd_mach_o_header_p (bfd *, bfd_mach_o_filetype,
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bfd_mach_o_cpu_type);
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bfd_boolean bfd_mach_o_build_commands (bfd *);
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bfd_boolean bfd_mach_o_set_section_contents (bfd *, asection *, const void *,
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file_ptr, bfd_size_type);
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unsigned int bfd_mach_o_version (bfd *);
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extern const bfd_target mach_o_fat_vec;
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#endif /* _BFD_MACH_O_H_ */
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