| Rahul Chaudhry | 36b7a6f | 2017-03-15 16:56:48 -0700 | [diff] [blame] | 1 | /* BFD back-end for i386 a.out binaries. |
| 2 | Copyright (C) 1990-2016 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | |
| 22 | /* The only 386 aout system we have here is GO32 from DJ. |
| 23 | These numbers make BFD work with that. If your aout 386 system |
| 24 | doesn't work with these, we'll have to split them into different |
| 25 | files. Send me (sac@cygnus.com) the runes to make it work on your |
| 26 | system, and I'll stick it in for the next release. */ |
| 27 | |
| 28 | #define N_HEADER_IN_TEXT(x) 0 |
| 29 | #define N_TXTOFF(x) 0x20 |
| 30 | #define N_TXTADDR(x) (N_MAGIC (x) == ZMAGIC ? 0x1020 : 0) |
| 31 | #define N_TXTSIZE(x) ((x)->a_text) |
| 32 | #define TARGET_PAGE_SIZE 4096 |
| 33 | #define SEGMENT_SIZE 0x400000 |
| 34 | #define DEFAULT_ARCH bfd_arch_i386 |
| 35 | |
| 36 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
| 37 | remove whitespace added here, and thus will fail to concatenate |
| 38 | the tokens. */ |
| 39 | #define MY(OP) CONCAT2 (i386_aout_,OP) |
| 40 | #define TARGETNAME "a.out-i386" |
| 41 | #define NO_WRITE_HEADER_KLUDGE 1 |
| 42 | |
| 43 | #include "sysdep.h" |
| 44 | #include "bfd.h" |
| 45 | #include "libbfd.h" |
| 46 | #include "aout/aout64.h" |
| 47 | #include "libaout.h" |
| 48 | |
| 49 | /* Set the machine type correctly. */ |
| 50 | |
| 51 | static bfd_boolean |
| 52 | i386aout_write_object_contents (bfd *abfd) |
| 53 | { |
| 54 | struct external_exec exec_bytes; |
| 55 | struct internal_exec *execp = exec_hdr (abfd); |
| 56 | |
| 57 | N_SET_MACHTYPE (execp, M_386); |
| 58 | |
| 59 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
| 60 | |
| 61 | WRITE_HEADERS (abfd, execp); |
| 62 | |
| 63 | return TRUE; |
| 64 | } |
| 65 | |
| 66 | #define MY_write_object_contents i386aout_write_object_contents |
| 67 | #define MY_backend_data & MY (backend_data) |
| 68 | |
| 69 | static const struct aout_backend_data MY (backend_data); |
| 70 | |
| 71 | #include "aout-target.h" |
| 72 | |
| 73 | static const struct aout_backend_data MY (backend_data) = |
| 74 | { |
| 75 | 0, /* Zmagic contiguous. */ |
| 76 | 1, /* Text incl header. */ |
| 77 | 0, /* Entry is text address. */ |
| 78 | 0, /* Exec_hdr_flags. */ |
| 79 | 0, /* Text vma? */ |
| 80 | MY (set_sizes), |
| 81 | 1, /* Exec header not counted. */ |
| 82 | 0, /* Add_dynamic_symbols. */ |
| 83 | 0, /* Add_one_symbol. */ |
| 84 | 0, /* Link_dynamic_object. */ |
| 85 | 0, /* Write_dynamic_symbol. */ |
| 86 | 0, /* Check_dynamic_reloc. */ |
| 87 | 0 /* Finish_dynamic_link. */ |
| 88 | }; |