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Diffstat (limited to 'include/mach-o/external.h')
| -rw-r--r-- | include/mach-o/external.h | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/include/mach-o/external.h b/include/mach-o/external.h new file mode 100644 index 000000000..41a293250 --- /dev/null +++ b/include/mach-o/external.h @@ -0,0 +1,326 @@ +/* Mach-O support for BFD. + Copyright 2011, 2012 + 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_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_fvmlib_command_external +{ + unsigned char name[4]; /* Offset of the name. */ + unsigned char minor_version[4]; + unsigned char header_addr[4]; +}; + +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. */ +}; + +#endif /* _MACH_O_EXTERNAL_H */ |