| 1 | /* BFD back-end for i386 a.out binaries under dynix. |
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| 2 | Copyright 1994, 1995 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of BFD, the Binary File Descriptor library. |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2 of the License, or |
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| 9 | (at your option) any later version. |
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| 10 | |
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| 11 | This program is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with this program; if not, write to the Free Software |
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| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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| 19 | |
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| 20 | /* This BFD is currently only tested with gdb, writing object files |
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| 21 | may not work. */ |
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| 22 | |
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| 23 | #define BYTES_IN_WORD 4 |
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| 24 | |
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| 25 | #define TEXT_START_ADDR 4096 |
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| 26 | #define TARGET_PAGE_SIZE 4096 |
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| 27 | #define SEGMENT_SIZE TARGET_PAGE_SIZE |
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| 28 | |
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| 29 | #include "aout/dynix3.h" |
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| 30 | |
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| 31 | #define DEFAULT_ARCH bfd_arch_i386 |
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| 32 | #define MACHTYPE_OK(mtype) ((mtype) == M_386 || (mtype) == M_UNKNOWN) |
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| 33 | |
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| 34 | #define MY(OP) CAT(i386dynix_,OP) |
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| 35 | #define TARGETNAME "a.out-i386-dynix" |
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| 36 | #define NAME(x,y) CAT3(i386dynix,_32_,y) |
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| 37 | #define ARCH_SIZE 32 |
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| 38 | #define NAME_swap_exec_header_in NAME(i386dynix_32_,swap_exec_header_in) |
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| 39 | #define MY_get_section_contents aout_32_get_section_contents |
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| 40 | |
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| 41 | /* aoutx.h requires definitions for NMAGIC, BMAGIC and QMAGIC. */ |
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| 42 | #define NMAGIC 0 |
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| 43 | #define BMAGIC OMAGIC |
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| 44 | #define QMAGIC XMAGIC |
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| 45 | |
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| 46 | #include "aoutx.h" |
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| 47 | |
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| 48 | /* (Ab)use some fields in the internal exec header to be able to read |
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| 49 | executables that contain shared data. */ |
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| 50 | |
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| 51 | #define a_shdata a_tload |
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| 52 | #define a_shdrsize a_dload |
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| 53 | |
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| 54 | void |
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| 55 | i386dynix_32_swap_exec_header_in (abfd, raw_bytes, execp) |
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| 56 | bfd *abfd; |
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| 57 | struct external_exec *raw_bytes; |
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| 58 | struct internal_exec *execp; |
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| 59 | { |
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| 60 | struct external_exec *bytes = (struct external_exec *)raw_bytes; |
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| 61 | |
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| 62 | /* The internal_exec structure has some fields that are unused in this |
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| 63 | configuration (IE for i960), so ensure that all such uninitialized |
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| 64 | fields are zero'd out. There are places where two of these structs |
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| 65 | are memcmp'd, and thus the contents do matter. */ |
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| 66 | memset ((PTR) execp, 0, sizeof (struct internal_exec)); |
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| 67 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
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| 68 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); |
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| 69 | execp->a_text = GET_WORD (abfd, bytes->e_text); |
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| 70 | execp->a_data = GET_WORD (abfd, bytes->e_data); |
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| 71 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); |
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| 72 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); |
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| 73 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); |
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| 74 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); |
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| 75 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); |
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| 76 | execp->a_shdata = GET_WORD (abfd, bytes->e_shdata); |
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| 77 | execp->a_shdrsize = GET_WORD (abfd, bytes->e_shdrsize); |
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| 78 | } |
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| 79 | |
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| 80 | #include "aout-target.h" |
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