i386aout.c revision 78828
1/* BFD back-end for i386 a.out binaries. 2 Copyright 1990, 1991, 1992, 1994, 1996, 1997 3 Free Software Foundation, Inc. 4 5This file is part of BFD, the Binary File Descriptor library. 6 7This program is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2 of the License, or 10(at your option) any later version. 11 12This program is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with this program; if not, write to the Free Software 19Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 BYTES_IN_WORD 4 30 31#define N_TXTOFF(x) 0x20 32#define N_TXTADDR(x) (N_MAGIC(x)==ZMAGIC ? 0x1020 : 0) 33 34#define N_TXTSIZE(x) ((x).a_text) 35#if 0 36#define N_DATADDR(x) (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) : (SEGMENT_SIZE + ((0x1020+(x).a_text-1) & ~(SEGMENT_SIZE-1)))) 37#define NOSUBEXECB 38 39#endif 40#define TARGET_PAGE_SIZE 4096 41#define SEGMENT_SIZE 0x400000 42#define DEFAULT_ARCH bfd_arch_i386 43 44#define MY(OP) CAT(i386aout_,OP) 45#define TARGETNAME "a.out-i386" 46#define NO_WRITE_HEADER_KLUDGE 1 47 48#include "bfd.h" 49#include "sysdep.h" 50#include "libbfd.h" 51#include "aout/aout64.h" 52#include "libaout.h" 53 54/* Set the machine type correctly. */ 55 56static boolean 57i386aout_write_object_contents (abfd) 58 bfd *abfd; 59{ 60 struct external_exec exec_bytes; 61 struct internal_exec *execp = exec_hdr (abfd); 62 63 N_SET_MACHTYPE (*execp, M_386); 64 65 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 66 67 WRITE_HEADERS (abfd, execp); 68 69 return true; 70} 71 72#define MY_write_object_contents i386aout_write_object_contents 73 74static boolean MY(set_sizes)(); 75#define MY_backend_data &MY(backend_data) 76static CONST struct aout_backend_data MY(backend_data) = { 77 0, /* zmagic contiguous */ 78 1, /* text incl header */ 79 0, /* entry is text address */ 80 0, /* exec_hdr_flags */ 81 0, /* text vma? */ 82 MY(set_sizes), 83 1, /* exec header not counted */ 84 0, /* add_dynamic_symbols */ 85 0, /* add_one_symbol */ 86 0, /* link_dynamic_object */ 87 0, /* write_dynamic_symbol */ 88 0, /* check_dynamic_reloc */ 89 0 /* finish_dynamic_link */ 90}; 91 92#include "aout-target.h" 93