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/* Mach-O support for BFD.
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Copyright 1999, 2000, 2001, 2002
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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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#ifndef _BFD_MACH_O_H_
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#define _BFD_MACH_O_H_
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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_SECT 0x0e /* Defined in section number n_sect. */
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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_INDR 0x0a /* Indirect. */
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typedef enum bfd_mach_o_ppc_thread_flavour
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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_flavour;
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typedef enum bfd_mach_o_i386_thread_flavour
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BFD_MACH_O_i386_NEW_THREAD_STATE = 1,
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BFD_MACH_O_i386_FLOAT_STATE = 2,
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BFD_MACH_O_i386_ISA_PORT_MAP_STATE = 3,
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BFD_MACH_O_i386_V86_ASSIST_STATE = 4,
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BFD_MACH_O_i386_REGS_SEGS_STATE = 5,
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BFD_MACH_O_i386_THREAD_SYSCALL_STATE = 6,
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BFD_MACH_O_i386_THREAD_STATE_NONE = 7,
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BFD_MACH_O_i386_SAVED_STATE = 8,
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BFD_MACH_O_i386_THREAD_STATE = -1,
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BFD_MACH_O_i386_THREAD_FPSTATE = -2,
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BFD_MACH_O_i386_THREAD_EXCEPTSTATE = -3,
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BFD_MACH_O_i386_THREAD_CTHREADSTATE = -4,
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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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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 dynamicly linked shared library. */
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BFD_MACH_O_LC_ID_DYLIB = 0xd, /* Dynamicly 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 dynamicly. */
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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 dynamicly linked shared library that is allowed to be
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BFD_MACH_O_LC_LOAD_WEAK_DYLIB = 0x18
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bfd_mach_o_load_command_type;
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typedef enum bfd_mach_o_cpu_type
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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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typedef enum bfd_mach_o_filetype
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BFD_MACH_O_MH_OBJECT = 1,
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BFD_MACH_O_MH_EXECUTE = 2,
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BFD_MACH_O_MH_FVMLIB = 3,
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BFD_MACH_O_MH_CORE = 4,
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BFD_MACH_O_MH_PRELOAD = 5,
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BFD_MACH_O_MH_DYLIB = 6,
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BFD_MACH_O_MH_DYLINKER = 7,
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BFD_MACH_O_MH_BUNDLE = 8,
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BFD_MACH_O_MH_DYLIB_STUB = 9
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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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/* 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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/* Section with only non-lazy symbol pointers. */
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BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS = 0x6,
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BFD_MACH_O_S_NL_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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BFD_MACH_O_S_LA_SYMBOL_POINTERS = 0x7,
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/* Section with only symbol stubs, byte size of stub in the reserved2 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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bfd_mach_o_section_type;
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#define BFD_MACH_O_REFERENCE_TYPE 0xf
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typedef enum bfd_mach_o_n_desc
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/* This symbol is a reference to an external non-lazy symbol (data). */
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BFD_MACH_O_REFERENCE_FLAG_UNDEFINED_NON_LAZY = 0x0,
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/* This symbol is a reference to an external lazy symbol pointer (function call). */
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BFD_MACH_O_REFERENCE_FLAG_UNDEFINED_LAZY = 0x1,
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/* This symbol is defined in this module. */
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BFD_MACH_O_REFERENCE_FLAG_DEFINED = 0x2
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typedef unsigned long bfd_mach_o_cpu_subtype;
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typedef struct bfd_mach_o_header
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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 sizeofcmds;
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enum bfd_endian byteorder;
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typedef struct bfd_mach_o_section
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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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unsigned long nreloc;
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unsigned long reserved1;
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unsigned long reserved2;
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typedef struct bfd_mach_o_segment_command
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unsigned long filesize;
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unsigned long nsects;
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bfd_mach_o_section *sections;
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bfd_mach_o_segment_command;
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typedef struct bfd_mach_o_nlist
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/* BFD internal representation. */
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/* Mach-O representation. */
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unsigned char n_type;
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unsigned char n_sect;
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unsigned long n_value;
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/* Index in input symbol table. */
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unsigned long input_index;
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/* Index in output symbol table. */
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unsigned long output_index;
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typedef struct bfd_mach_o_symtab_command
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unsigned long symoff;
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unsigned long stroff;
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unsigned long strsize;
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/*asymbol *symbols;*/
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bfd_mach_o_nlist *nlists;
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asection *stabs_segment;
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asection *stabstr_segment;
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bfd_mach_o_symtab_command;
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/* This is the second set of the symbolic information which is used to support
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the data structures for the dynamicly link editor.
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The original set of symbolic information in the symtab_command which contains
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the symbol and string tables must also be present when this load command is
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present. When this load command is present the symbol table is organized
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into three groups of symbols:
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local symbols (static and debugging symbols) - grouped by module
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defined external symbols - grouped by module (sorted by name if not lib)
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undefined external symbols (sorted by name)
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In this load command there are offsets and counts to each of the three groups
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This load command contains a the offsets and sizes of the following new
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symbolic information tables:
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reference symbol table
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indirect symbol table
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The first three tables above (the table of contents, module table and
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reference symbol table) are only present if the file is a dynamicly linked
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shared library. For executable and object modules, which are files
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containing only one module, the information that would be in these three
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tables is determined as follows:
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table of contents - the defined external symbols are sorted by name
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module table - the file contains only one module so everything in the
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file is part of the module.
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reference symbol table - is the defined and undefined external symbols
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For dynamicly linked shared library files this load command also contains
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offsets and sizes to the pool of relocation entries for all sections
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separated into two groups:
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external relocation entries
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local relocation entries
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For executable and object modules the relocation entries continue to hang
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off the section structures. */
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typedef struct bfd_mach_o_dysymtab_command
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/* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command
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are grouped into the following three groups:
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local symbols (further grouped by the module they are from)
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defined external symbols (further grouped by the module they are from)
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The local symbols are used only for debugging. The dynamic binding
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process may have to use them to indicate to the debugger the local
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symbols for a module that is being bound.
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The last two groups are used by the dynamic binding process to do the
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binding (indirectly through the module table and the reference symbol
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table when this is a dynamicly linked shared library file). */
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unsigned long ilocalsym; /* Index to local symbols. */
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unsigned long nlocalsym; /* Number of local symbols. */
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unsigned long iextdefsym; /* Index to externally defined symbols. */
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unsigned long nextdefsym; /* Number of externally defined symbols. */
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unsigned long iundefsym; /* Index to undefined symbols. */
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unsigned long nundefsym; /* Number of undefined symbols. */
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/* For the for the dynamic binding process to find which module a symbol
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is defined in the table of contents is used (analogous to the ranlib
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structure in an archive) which maps defined external symbols to modules
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they are defined in. This exists only in a dynamicly linked shared
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library file. For executable and object modules the defined external
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symbols are sorted by name and is use as the table of contents. */
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unsigned long tocoff; /* File offset to table of contents. */
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unsigned long ntoc; /* Number of entries in table of contents. */
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/* To support dynamic binding of "modules" (whole object files) the symbol
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table must reflect the modules that the file was created from. This is
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done by having a module table that has indexes and counts into the merged
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tables for each module. The module structure that these two entries
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refer to is described below. This exists only in a dynamicly linked
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shared library file. For executable and object modules the file only
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contains one module so everything in the file belongs to the module. */
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unsigned long modtaboff; /* File offset to module table. */
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unsigned long nmodtab; /* Number of module table entries. */
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/* To support dynamic module binding the module structure for each module
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indicates the external references (defined and undefined) each module
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makes. For each module there is an offset and a count into the
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reference symbol table for the symbols that the module references.
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This exists only in a dynamicly linked shared library file. For
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executable and object modules the defined external symbols and the
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undefined external symbols indicates the external references. */
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unsigned long extrefsymoff; /* Offset to referenced symbol table. */
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unsigned long nextrefsyms; /* Number of referenced symbol table entries. */
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/* The sections that contain "symbol pointers" and "routine stubs" have
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indexes and (implied counts based on the size of the section and fixed
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size of the entry) into the "indirect symbol" table for each pointer
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and stub. For every section of these two types the index into the
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indirect symbol table is stored in the section header in the field
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reserved1. An indirect symbol table entry is simply a 32bit index into
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the symbol table to the symbol that the pointer or stub is referring to.
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The indirect symbol table is ordered to match the entries in the section. */
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unsigned long indirectsymoff; /* File offset to the indirect symbol table. */
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unsigned long nindirectsyms; /* Number of indirect symbol table entries. */
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/* To support relocating an individual module in a library file quickly the
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external relocation entries for each module in the library need to be
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accessed efficiently. Since the relocation entries can't be accessed
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through the section headers for a library file they are separated into
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groups of local and external entries further grouped by module. In this
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case the presents of this load command who's extreloff, nextrel,
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locreloff and nlocrel fields are non-zero indicates that the relocation
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entries of non-merged sections are not referenced through the section
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structures (and the reloff and nreloc fields in the section headers are
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Since the relocation entries are not accessed through the section headers
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this requires the r_address field to be something other than a section
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offset to identify the item to be relocated. In this case r_address is
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set to the offset from the vmaddr of the first LC_SEGMENT command.
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The relocation entries are grouped by module and the module table
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entries have indexes and counts into them for the group of external
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relocation entries for that the module.
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For sections that are merged across modules there must not be any
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remaining external relocation entries for them (for merged sections
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remaining relocation entries must be local). */
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unsigned long extreloff; /* Offset to external relocation entries. */
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unsigned long nextrel; /* Number of external relocation entries. */
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/* All the local relocation entries are grouped together (they are not
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grouped by their module since they are only used if the object is moved
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from it staticly link edited address). */
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unsigned long locreloff; /* Offset to local relocation entries. */
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unsigned long nlocrel; /* Number of local relocation entries. */
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bfd_mach_o_dysymtab_command;
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/* An indirect symbol table entry is simply a 32bit index into the symbol table
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to the symbol that the pointer or stub is refering to. Unless it is for a
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non-lazy symbol pointer section for a defined symbol which strip(1) as
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removed. In which case it has the value INDIRECT_SYMBOL_LOCAL. If the
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symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that. */
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#define INDIRECT_SYMBOL_LOCAL 0x80000000
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#define INDIRECT_SYMBOL_ABS 0x40000000
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typedef struct bfd_mach_o_thread_flavour
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unsigned long flavour;
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bfd_mach_o_thread_flavour;
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typedef struct bfd_mach_o_thread_command
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unsigned long nflavours;
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bfd_mach_o_thread_flavour *flavours;
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bfd_mach_o_thread_command;
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typedef struct bfd_mach_o_dylinker_command
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unsigned long cmd; /* LC_ID_DYLIB or LC_LOAD_DYLIB. */
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unsigned long cmdsize; /* Includes pathname string. */
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unsigned long name_offset; /* Offset to library's path name. */
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unsigned long name_len; /* Offset to library's path name. */
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bfd_mach_o_dylinker_command;
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typedef struct bfd_mach_o_dylib_command
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unsigned long cmd; /* LC_ID_DYLIB or LC_LOAD_DYLIB. */
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unsigned long cmdsize; /* Includes pathname string. */
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unsigned long name_offset; /* Offset to library's path name. */
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unsigned long name_len; /* Offset to library's path name. */
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unsigned long timestamp; /* Library's build time stamp. */
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unsigned long current_version; /* Library's current version number. */
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unsigned long compatibility_version; /* Library's compatibility vers number. */
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bfd_mach_o_dylib_command;
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typedef struct bfd_mach_o_prebound_dylib_command
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unsigned long cmd; /* LC_PREBOUND_DYLIB. */
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unsigned long cmdsize; /* Includes strings. */
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unsigned long name; /* Library's path name. */
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unsigned long nmodules; /* Number of modules in library. */
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unsigned long linked_modules; /* Bit vector of linked modules. */
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bfd_mach_o_prebound_dylib_command;
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typedef struct bfd_mach_o_load_command
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bfd_mach_o_load_command_type type;
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unsigned int type_required;
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bfd_mach_o_segment_command segment;
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bfd_mach_o_symtab_command symtab;
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bfd_mach_o_dysymtab_command dysymtab;
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bfd_mach_o_thread_command thread;
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bfd_mach_o_dylib_command dylib;
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bfd_mach_o_dylinker_command dylinker;
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bfd_mach_o_prebound_dylib_command prebound_dylib;
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bfd_mach_o_load_command;
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/* Map an indirect symbol table entry to a symbol table entry and vice-versa. */
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/* Reference to the indirect symbol table entry. */
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unsigned long ist_idx;
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/* Reference to the symbol table entry. */
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unsigned long st_idx;
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bfd_mach_o_ist_entry;
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/* Describe the indirect symbol table. */
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/* Associated LC_DYSYMTAB load command. */
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bfd_mach_o_dysymtab_command *command;
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/* Number of entries in this indirect symbol table. */
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/* Number of BFD_MACH_O_S_SYMBOL_STUB sections in the following array. */
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unsigned long nstubs;
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/* Array of stub sections. */
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bfd_mach_o_section **stubs;
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/* Number of BFD_MACH_O_S_NL_SYMBOL_POINTERS sections in the following array. */
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unsigned long nnlptrs;
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/* Array of non-lazy symbol pointer sections. */
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bfd_mach_o_section **nlptrs;
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/* Number of BFD_MACH_O_S_LA_SYMBOL_POINTERS sections in the following array. */
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unsigned long nlaptrs;
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/* Array of lazy symbol pointer sections. */
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bfd_mach_o_section **laptrs;
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/* Raw indirect symbol table entry, as slurped from the input file. */
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bfd_mach_o_ist_entry *raw_ist;
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/* Indirect symbol table that was sorted by chunks, depending on st_idx. */
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bfd_mach_o_ist_entry *sorted_ist;
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/* General link information. */
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struct bfd_link_info *info;
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/* Buffer large enough to hold contents of any section. */
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bfd_mach_o_final_link_info;
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/* This struct is used to pass information to and from bfd_mach_o_link_output_extsym. */
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bfd_mach_o_final_link_info *finfo;
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bfd_mach_o_outext_info;
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/* Mach-O back-end global hash table entries. */
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// struct bfd_link_hash_entry root;
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// bfd_mach_o_link_hash_entry;
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#define mach_o_tdata(abfd) ((abfd)->tdata.mach_o_data)
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#define mach_o_symtab(abfd) (mach_o_tdata(abfd)->st)
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#define mach_o_dysymtab(abfd) (mach_o_tdata(abfd)->dyst)
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#define mach_o_n_type(udata) (((udata) >> 24) & 0xff)
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#define mach_o_n_sect(udata) (((udata) >> 16) & 0xff)
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#define mach_o_n_desc(udata) ((udata) & 0xffff)
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typedef struct mach_o_data_struct
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bfd_mach_o_header header;
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bfd_mach_o_load_command *commands;
587
bfd_mach_o_symtab_command *st;
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bfd_mach_o_dysymtab_command *dyst;
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unsigned long nsymbols;
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unsigned long nsects;
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bfd_mach_o_section **sections;
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typedef struct mach_o_data_struct bfd_mach_o_data_struct;
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boolean bfd_mach_o_valid
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int bfd_mach_o_scan_read_symtab_symbol
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/*PARAMS ((bfd *, bfd_mach_o_symtab_command *, asymbol *, unsigned long));*/
603
PARAMS ((bfd *, bfd_mach_o_symtab_command *,
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bfd_mach_o_nlist *, unsigned long));
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int bfd_mach_o_scan_read_symtab_strtab
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PARAMS ((bfd *, bfd_mach_o_symtab_command *));
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int bfd_mach_o_scan_read_symtab_symbols
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PARAMS ((bfd *, bfd_mach_o_symtab_command *));
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int bfd_mach_o_scan_read_dysymtab_symbol
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PARAMS ((bfd *, bfd_mach_o_dysymtab_command *, bfd_mach_o_symtab_command *,
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bfd_mach_o_nlist */*asymbol **/, unsigned long));
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int bfd_mach_o_scan_start_address
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PARAMS ((bfd *, bfd_mach_o_header *, bfd_mach_o_data_struct *));
616
boolean bfd_mach_o_mkobject
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const bfd_target * bfd_mach_o_object_p
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const bfd_target * bfd_mach_o_core_p
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const bfd_target * bfd_mach_o_archive_p
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bfd * bfd_mach_o_openr_next_archived_file
625
PARAMS ((bfd *, bfd *));
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int bfd_mach_o_lookup_section
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PARAMS ((bfd *, asection *, bfd_mach_o_load_command **,
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bfd_mach_o_section **));
629
int bfd_mach_o_lookup_command
630
PARAMS ((bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **));
631
unsigned long bfd_mach_o_stack_addr
632
PARAMS ((enum bfd_mach_o_cpu_type));
633
int bfd_mach_o_core_fetch_environment
634
PARAMS ((bfd *, unsigned char **, unsigned int *));
635
char * bfd_mach_o_core_file_failing_command
637
int bfd_mach_o_core_file_failing_signal
639
boolean bfd_mach_o_core_file_matches_executable_p
640
PARAMS ((bfd *, bfd *));
642
extern const bfd_target mach_o_be_vec;
643
extern const bfd_target mach_o_le_vec;
644
extern const bfd_target mach_o_fat_vec;
651
const struct bfd_arch_info *arch_info;
652
struct sec *sections;
653
struct sec **section_tail;
654
unsigned int section_count;
655
struct bfd_hash_table section_htab;
659
bfd_preserve_save PARAMS ((bfd *, struct bfd_preserve *));
662
bfd_preserve_restore PARAMS ((bfd *, struct bfd_preserve *));
665
bfd_preserve_finish PARAMS ((bfd *, struct bfd_preserve *));
667
#endif /* _BFD_MACH_O_H_ */
added
removed
binutils/bfd/mach-o.h
