mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
420 lines
13 KiB
C
420 lines
13 KiB
C
/* Mach-O support for BFD.
|
|
Copyright (C) 2011-2017 Free Software Foundation, Inc.
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#ifndef _MACH_O_EXTERNAL_H
|
|
#define _MACH_O_EXTERNAL_H
|
|
|
|
struct mach_o_header_external
|
|
{
|
|
unsigned char magic[4]; /* Magic number. */
|
|
unsigned char cputype[4]; /* CPU that this object is for. */
|
|
unsigned char cpusubtype[4]; /* CPU subtype. */
|
|
unsigned char filetype[4]; /* Type of file. */
|
|
unsigned char ncmds[4]; /* Number of load commands. */
|
|
unsigned char sizeofcmds[4]; /* Total size of load commands. */
|
|
unsigned char flags[4]; /* Flags. */
|
|
unsigned char reserved[4]; /* Reserved (on 64-bit version only). */
|
|
};
|
|
|
|
#define BFD_MACH_O_HEADER_SIZE 28
|
|
#define BFD_MACH_O_HEADER_64_SIZE 32
|
|
|
|
/* 32-bit section header. */
|
|
|
|
struct mach_o_section_32_external
|
|
{
|
|
unsigned char sectname[16]; /* Section name. */
|
|
unsigned char segname[16]; /* Segment that the section belongs to. */
|
|
unsigned char addr[4]; /* Address of this section in memory. */
|
|
unsigned char size[4]; /* Size in bytes of this section. */
|
|
unsigned char offset[4]; /* File offset of this section. */
|
|
unsigned char align[4]; /* log2 of this section's alignment. */
|
|
unsigned char reloff[4]; /* File offset of this section's relocs. */
|
|
unsigned char nreloc[4]; /* Number of relocs for this section. */
|
|
unsigned char flags[4]; /* Section flags/attributes. */
|
|
unsigned char reserved1[4];
|
|
unsigned char reserved2[4];
|
|
};
|
|
#define BFD_MACH_O_SECTION_SIZE 68
|
|
|
|
/* 64-bit section header. */
|
|
|
|
struct mach_o_section_64_external
|
|
{
|
|
unsigned char sectname[16]; /* Section name. */
|
|
unsigned char segname[16]; /* Segment that the section belongs to. */
|
|
unsigned char addr[8]; /* Address of this section in memory. */
|
|
unsigned char size[8]; /* Size in bytes of this section. */
|
|
unsigned char offset[4]; /* File offset of this section. */
|
|
unsigned char align[4]; /* log2 of this section's alignment. */
|
|
unsigned char reloff[4]; /* File offset of this section's relocs. */
|
|
unsigned char nreloc[4]; /* Number of relocs for this section. */
|
|
unsigned char flags[4]; /* Section flags/attributes. */
|
|
unsigned char reserved1[4];
|
|
unsigned char reserved2[4];
|
|
unsigned char reserved3[4];
|
|
};
|
|
#define BFD_MACH_O_SECTION_64_SIZE 80
|
|
|
|
struct mach_o_load_command_external
|
|
{
|
|
unsigned char cmd[4]; /* The type of load command. */
|
|
unsigned char cmdsize[4]; /* Size in bytes of entire command. */
|
|
};
|
|
#define BFD_MACH_O_LC_SIZE 8
|
|
|
|
struct mach_o_segment_command_32_external
|
|
{
|
|
unsigned char segname[16]; /* Name of this segment. */
|
|
unsigned char vmaddr[4]; /* Virtual memory address of this segment. */
|
|
unsigned char vmsize[4]; /* Size there, in bytes. */
|
|
unsigned char fileoff[4]; /* Offset in bytes of the data to be mapped. */
|
|
unsigned char filesize[4]; /* Size in bytes on disk. */
|
|
unsigned char maxprot[4]; /* Maximum permitted vm protection. */
|
|
unsigned char initprot[4]; /* Initial vm protection. */
|
|
unsigned char nsects[4]; /* Number of sections in this segment. */
|
|
unsigned char flags[4]; /* Flags that affect the loading. */
|
|
};
|
|
#define BFD_MACH_O_LC_SEGMENT_SIZE 56 /* Include the header. */
|
|
|
|
struct mach_o_segment_command_64_external
|
|
{
|
|
unsigned char segname[16]; /* Name of this segment. */
|
|
unsigned char vmaddr[8]; /* Virtual memory address of this segment. */
|
|
unsigned char vmsize[8]; /* Size there, in bytes. */
|
|
unsigned char fileoff[8]; /* Offset in bytes of the data to be mapped. */
|
|
unsigned char filesize[8]; /* Size in bytes on disk. */
|
|
unsigned char maxprot[4]; /* Maximum permitted vm protection. */
|
|
unsigned char initprot[4]; /* Initial vm protection. */
|
|
unsigned char nsects[4]; /* Number of sections in this segment. */
|
|
unsigned char flags[4]; /* Flags that affect the loading. */
|
|
};
|
|
#define BFD_MACH_O_LC_SEGMENT_64_SIZE 72 /* Include the header. */
|
|
|
|
struct mach_o_reloc_info_external
|
|
{
|
|
unsigned char r_address[4];
|
|
unsigned char r_symbolnum[4];
|
|
};
|
|
#define BFD_MACH_O_RELENT_SIZE 8
|
|
|
|
/* Relocations are based on 'address' being a section offset and an assumption
|
|
that sections are never more than 2^24-1 bytes in size. Relocation data
|
|
also carry information on type/size/PC-relative/extern and whether scattered
|
|
or not [stored in the MSB of the r_address]. */
|
|
|
|
#define BFD_MACH_O_SR_SCATTERED 0x80000000
|
|
|
|
/* For a non-scattered reloc, the relocation info is found in r_symbolnum.
|
|
Bytes 1 to 3 contain the symbol number (0xffffff, in a non-scattered PAIR).
|
|
Byte 4 contains the relocation info - but with differing bit-positions
|
|
dependent on target endian-ness - as below. */
|
|
|
|
#define BFD_MACH_O_LE_PCREL 0x01
|
|
#define BFD_MACH_O_LE_LENGTH_SHIFT 1
|
|
#define BFD_MACH_O_LE_EXTERN 0x08
|
|
#define BFD_MACH_O_LE_TYPE_SHIFT 4
|
|
|
|
#define BFD_MACH_O_BE_PCREL 0x80
|
|
#define BFD_MACH_O_BE_LENGTH_SHIFT 5
|
|
#define BFD_MACH_O_BE_EXTERN 0x10
|
|
#define BFD_MACH_O_BE_TYPE_SHIFT 0
|
|
|
|
/* The field sizes are the same for both BE and LE. */
|
|
#define BFD_MACH_O_LENGTH_MASK 0x03
|
|
#define BFD_MACH_O_TYPE_MASK 0x0f
|
|
|
|
/* For a scattered reloc entry the info is contained in r_address. There
|
|
is no need to discriminate on target endian-ness, since the design was
|
|
arranged to produce the same layout on both. Scattered relocations are
|
|
only used for local items, therefore there is no 'extern' field. */
|
|
|
|
#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)
|
|
|
|
struct mach_o_symtab_command_external
|
|
{
|
|
unsigned char symoff[4]; /* File offset of the symbol table. */
|
|
unsigned char nsyms[4]; /* Number of symbols. */
|
|
unsigned char stroff[4]; /* File offset of the string table. */
|
|
unsigned char strsize[4]; /* String table size. */
|
|
};
|
|
|
|
struct mach_o_nlist_external
|
|
{
|
|
unsigned char n_strx[4];
|
|
unsigned char n_type[1];
|
|
unsigned char n_sect[1];
|
|
unsigned char n_desc[2];
|
|
unsigned char n_value[4];
|
|
};
|
|
#define BFD_MACH_O_NLIST_SIZE 12
|
|
|
|
struct mach_o_nlist_64_external
|
|
{
|
|
unsigned char n_strx[4];
|
|
unsigned char n_type[1];
|
|
unsigned char n_sect[1];
|
|
unsigned char n_desc[2];
|
|
unsigned char n_value[8];
|
|
};
|
|
#define BFD_MACH_O_NLIST_64_SIZE 16
|
|
|
|
struct mach_o_thread_command_external
|
|
{
|
|
unsigned char flavour[4];
|
|
unsigned char count[4];
|
|
};
|
|
|
|
/* For commands that just have a string or a path. */
|
|
struct mach_o_str_command_external
|
|
{
|
|
unsigned char str[4];
|
|
};
|
|
|
|
struct mach_o_dylib_command_external
|
|
{
|
|
unsigned char name[4];
|
|
unsigned char timestamp[4];
|
|
unsigned char current_version[4];
|
|
unsigned char compatibility_version[4];
|
|
};
|
|
|
|
struct mach_o_dysymtab_command_external
|
|
{
|
|
unsigned char ilocalsym[4]; /* Index of. */
|
|
unsigned char nlocalsym[4]; /* Number of. */
|
|
unsigned char iextdefsym[4];
|
|
unsigned char nextdefsym[4];
|
|
unsigned char iundefsym[4];
|
|
unsigned char nundefsym[4];
|
|
unsigned char tocoff[4];
|
|
unsigned char ntoc[4];
|
|
unsigned char modtaboff[4];
|
|
unsigned char nmodtab[4];
|
|
unsigned char extrefsymoff[4];
|
|
unsigned char nextrefsyms[4];
|
|
unsigned char indirectsymoff[4];
|
|
unsigned char nindirectsyms[4];
|
|
unsigned char extreloff[4];
|
|
unsigned char nextrel[4];
|
|
unsigned char locreloff[4];
|
|
unsigned char nlocrel[4];
|
|
};
|
|
|
|
struct mach_o_dylib_module_external
|
|
{
|
|
unsigned char module_name[4];
|
|
unsigned char iextdefsym[4];
|
|
unsigned char nextdefsym[4];
|
|
unsigned char irefsym[4];
|
|
unsigned char nrefsym[4];
|
|
unsigned char ilocalsym[4];
|
|
unsigned char nlocalsym[4];
|
|
unsigned char iextrel[4];
|
|
unsigned char nextrel[4];
|
|
unsigned char iinit_iterm[4];
|
|
unsigned char ninit_nterm[4];
|
|
unsigned char objc_module_info_addr[4];
|
|
unsigned char objc_module_info_size[4];
|
|
};
|
|
#define BFD_MACH_O_DYLIB_MODULE_SIZE 52
|
|
|
|
struct mach_o_dylib_module_64_external
|
|
{
|
|
unsigned char module_name[4];
|
|
unsigned char iextdefsym[4];
|
|
unsigned char nextdefsym[4];
|
|
unsigned char irefsym[4];
|
|
unsigned char nrefsym[4];
|
|
unsigned char ilocalsym[4];
|
|
unsigned char nlocalsym[4];
|
|
unsigned char iextrel[4];
|
|
unsigned char nextrel[4];
|
|
unsigned char iinit_iterm[4];
|
|
unsigned char ninit_nterm[4];
|
|
unsigned char objc_module_info_size[4];
|
|
unsigned char objc_module_info_addr[8];
|
|
};
|
|
#define BFD_MACH_O_DYLIB_MODULE_64_SIZE 56
|
|
|
|
struct mach_o_dylib_table_of_contents_external
|
|
{
|
|
unsigned char symbol_index[4];
|
|
unsigned char module_index[4];
|
|
};
|
|
#define BFD_MACH_O_TABLE_OF_CONTENT_SIZE 8
|
|
|
|
struct mach_o_linkedit_data_command_external
|
|
{
|
|
unsigned char dataoff[4];
|
|
unsigned char datasize[4];
|
|
};
|
|
|
|
struct mach_o_dyld_info_command_external
|
|
{
|
|
unsigned char rebase_off[4];
|
|
unsigned char rebase_size[4];
|
|
unsigned char bind_off[4];
|
|
unsigned char bind_size[4];
|
|
unsigned char weak_bind_off[4];
|
|
unsigned char weak_bind_size[4];
|
|
unsigned char lazy_bind_off[4];
|
|
unsigned char lazy_bind_size[4];
|
|
unsigned char export_off[4];
|
|
unsigned char export_size[4];
|
|
};
|
|
|
|
struct mach_o_prebound_dylib_command_external
|
|
{
|
|
unsigned char name[4];
|
|
unsigned char nmodules[4];
|
|
unsigned char linked_modules[4];
|
|
};
|
|
|
|
struct mach_o_prebind_cksum_command_external
|
|
{
|
|
unsigned char cksum[4];
|
|
};
|
|
|
|
struct mach_o_twolevel_hints_command_external
|
|
{
|
|
unsigned char offset[4];
|
|
unsigned char nhints[4];
|
|
};
|
|
|
|
struct mach_o_version_min_command_external
|
|
{
|
|
unsigned char version[4];
|
|
unsigned char reserved[4];
|
|
};
|
|
|
|
struct mach_o_encryption_info_command_external
|
|
{
|
|
unsigned char cryptoff[4]; /* File offset of the encrypted area. */
|
|
unsigned char cryptsize[4]; /* Size of the encrypted area. */
|
|
unsigned char cryptid[4]; /* Encryption method. */
|
|
};
|
|
|
|
struct mach_o_encryption_info_64_command_external
|
|
{
|
|
unsigned char cryptoff[4]; /* File offset of the encrypted area. */
|
|
unsigned char cryptsize[4]; /* Size of the encrypted area. */
|
|
unsigned char cryptid[4]; /* Encryption method. */
|
|
unsigned char pad[4]; /* Pad to make struct size a multiple of 8. */
|
|
};
|
|
|
|
struct mach_o_fvmlib_command_external
|
|
{
|
|
unsigned char name[4]; /* Offset of the name. */
|
|
unsigned char minor_version[4];
|
|
unsigned char header_addr[4];
|
|
};
|
|
|
|
struct mach_o_entry_point_command_external
|
|
{
|
|
unsigned char entryoff[8]; /* File offset of the entry point. */
|
|
unsigned char stacksize[8]; /* Initial stack size, if no null. */
|
|
};
|
|
|
|
struct mach_o_source_version_command_external
|
|
{
|
|
unsigned char version[8]; /* Version A.B.C.D.E, with 10 bits for B-E,
|
|
and 24 bits for A. */
|
|
};
|
|
|
|
/* The LD_DATA_IN_CODE command use a linkedit_data_command that points to
|
|
a table of entries. */
|
|
|
|
struct mach_o_data_in_code_entry_external
|
|
{
|
|
unsigned char offset[4]; /* Offset from the mach_header. */
|
|
unsigned char length[2]; /* Number of bytes. */
|
|
unsigned char kind[2]; /* Kind. See BFD_MACH_O_DICE_ values. */
|
|
};
|
|
|
|
struct mach_o_linker_option_command_external
|
|
{
|
|
unsigned char count[4]; /* Number of strings. */
|
|
/* COUNT null terminated UTF-8 strings, with 0 at the end for padding. */
|
|
};
|
|
|
|
struct mach_o_fat_header_external
|
|
{
|
|
unsigned char magic[4];
|
|
unsigned char nfat_arch[4]; /* Number of components. */
|
|
};
|
|
|
|
struct mach_o_fat_arch_external
|
|
{
|
|
unsigned char cputype[4];
|
|
unsigned char cpusubtype[4];
|
|
unsigned char offset[4]; /* File offset of the member. */
|
|
unsigned char size[4]; /* Size of the member. */
|
|
unsigned char align[4]; /* Power of 2. */
|
|
};
|
|
|
|
struct mach_o_dyld_cache_header_external
|
|
{
|
|
unsigned char magic[16];
|
|
|
|
unsigned char mapping_offset[4];
|
|
unsigned char mapping_count[4];
|
|
unsigned char images_offset[4];
|
|
unsigned char images_count[4];
|
|
|
|
unsigned char dyld_base_address[8];
|
|
|
|
unsigned char code_signature_offset[8];
|
|
unsigned char code_signature_size[8];
|
|
|
|
unsigned char slide_info_offset[8];
|
|
unsigned char slide_info_size[8];
|
|
|
|
unsigned char local_symbols_offset[8];
|
|
unsigned char local_symbols_size[8];
|
|
};
|
|
|
|
struct mach_o_dyld_cache_mapping_info_external
|
|
{
|
|
unsigned char address[8];
|
|
unsigned char size[8];
|
|
unsigned char file_offset[8];
|
|
unsigned char max_prot[4];
|
|
unsigned char init_prot[4];
|
|
};
|
|
|
|
struct mach_o_dyld_cache_image_info_external
|
|
{
|
|
unsigned char address[8];
|
|
unsigned char mtime[8];
|
|
unsigned char inode[8];
|
|
unsigned char path_file_offset[4];
|
|
unsigned char pad[4];
|
|
};
|
|
|
|
|
|
#endif /* _MACH_O_EXTERNAL_H */
|