1 /* BFD back-end for i386 a.out binaries under dynix. 2 Copyright (C) 1994, 1995 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19 20 /* This BFD is currently only tested with gdb, writing object files 21 may not work. */ 22 23 #define BYTES_IN_WORD 4 24 25 #define TEXT_START_ADDR 4096 26 #define TARGET_PAGE_SIZE 4096 27 #define SEGMENT_SIZE TARGET_PAGE_SIZE 28 29 #include "aout/dynix3.h" 30 31 #define DEFAULT_ARCH bfd_arch_i386 32 #define MACHTYPE_OK(mtype) ((mtype) == M_386 || (mtype) == M_UNKNOWN) 33 34 #define MY(OP) CAT(i386dynix_,OP) 35 #define TARGETNAME "a.out-i386-dynix" 36 #define NAME(x,y) CAT3(i386dynix,_32_,y) 37 #define ARCH_SIZE 32 38 #define NAME_swap_exec_header_in NAME(i386dynix_32_,swap_exec_header_in) 39 #define MY_get_section_contents aout_32_get_section_contents 40 41 /* aoutx.h requires definitions for NMAGIC, BMAGIC and QMAGIC. */ 42 #define NMAGIC 0 43 #define BMAGIC OMAGIC 44 #define QMAGIC XMAGIC 45 46 #include "aoutx.h" 47 48 /* (Ab)use some fields in the internal exec header to be able to read 49 executables that contain shared data. */ 50 51 #define a_shdata a_tload 52 #define a_shdrsize a_dload 53 54 void 55 i386dynix_32_swap_exec_header_in (abfd, raw_bytes, execp) 56 bfd *abfd; 57 struct external_exec *raw_bytes; 58 struct internal_exec *execp; 59 { 60 struct external_exec *bytes = (struct external_exec *)raw_bytes; 61 62 /* The internal_exec structure has some fields that are unused in this 63 configuration (IE for i960), so ensure that all such uninitialized 64 fields are zero'd out. There are places where two of these structs 65 are memcmp'd, and thus the contents do matter. */ 66 memset ((PTR) execp, 0, sizeof (struct internal_exec)); 67 /* Now fill in fields in the execp, from the bytes in the raw data. */ 68 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); 69 execp->a_text = GET_WORD (abfd, bytes->e_text); 70 execp->a_data = GET_WORD (abfd, bytes->e_data); 71 execp->a_bss = GET_WORD (abfd, bytes->e_bss); 72 execp->a_syms = GET_WORD (abfd, bytes->e_syms); 73 execp->a_entry = GET_WORD (abfd, bytes->e_entry); 74 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); 75 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); 76 execp->a_shdata = GET_WORD (abfd, bytes->e_shdata); 77 execp->a_shdrsize = GET_WORD (abfd, bytes->e_shdrsize); 78 } 79 80 #include "aout-target.h" 81