151 lines
4.5 KiB
C
Executable File
151 lines
4.5 KiB
C
Executable File
/* This file describes the a.out file format
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Copyright (C) 1987 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* $Id$ */
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#ifdef USE_HP_INC_HDR
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#include "../binutils/hp-include/a.out.h"
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#else
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#ifdef USE_SYSTEM_HDR
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#include "/usr/include/a.out.h"
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#else
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#ifdef USE_HP_HDR
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/* The `exec' structure and overall layout must be close to HP's when
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we are running on an HP system, otherwise we will not be able to
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execute the resulting file. */
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struct exec
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{
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unsigned short a_machtype; /* machine type */
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unsigned short a_magic; /* magic number */
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unsigned long a_spare1;
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unsigned long a_spare2;
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unsigned long a_text; /* length of text, in bytes */
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unsigned long a_data; /* length of data, in bytes */
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unsigned long a_bss; /* length of uninitialized data area for file, in bytes */
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unsigned long a_trsize; /* length of relocation info for text, in bytes */
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unsigned long a_drsize; /* length of relocation info for data, in bytes */
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unsigned long a_spare3; /* HP = pascal interface size */
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unsigned long a_spare4; /* HP = symbol table size */
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unsigned long a_spare5; /* HP = debug name table size */
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unsigned long a_entry; /* start address */
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unsigned long a_spare6; /* HP = source line table size */
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unsigned long a_spare7; /* HP = value table size */
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unsigned long a_syms; /* length of symbol table data in file, in bytes */
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unsigned long a_spare8;
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};
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#define N_MAGIC(exec) ((exec) . a_magic)
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#define N_MACHTYPE(exec) ((exec) . a_machtype)
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#define N_SET_MAGIC(exec, magic) (((exec) . a_magic) = (magic))
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#define N_SET_MACHTYPE(exec, machtype) (((exec) . a_machtype) = (machtype))
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#define N_BADMAG(x) ((_N_BADMAG (x)) || (_N_BADMACH (x)))
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#define _N_BADMACH(x) \
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(((N_MACHTYPE (x)) != HP9000S200_ID) && \
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((N_MACHTYPE (x)) != HP98x6_ID))
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#define _N_BADMAG(x) \
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(((x).a_magic)!=OMAGIC && ((x).a_magic)!=NMAGIC && ((x).a_magic)!=ZMAGIC)
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#define HP98x6_ID 0x20A
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#define HP9000S200_ID 0x20C
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#else
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/* A Generic machine. . . */
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/* JF I'm not sure where this file came from. I put the permit.text message in
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it anyway. This file came to me as part of the original VAX assembler, but had
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no copyright notices in it. */
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struct exec {
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long a_magic; /* number identifies as .o file and gives type of such. */
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unsigned a_text; /* length of text, in bytes */
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unsigned a_data; /* length of data, in bytes */
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unsigned a_bss; /* length of uninitialized data area for file, in bytes */
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unsigned a_syms; /* length of symbol table data in file, in bytes */
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unsigned a_entry; /* start address */
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unsigned a_trsize; /* length of relocation info for text, in bytes */
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unsigned a_drsize; /* length of relocation info for data, in bytes */
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};
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#define N_BADMAG(x) \
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(((x).a_magic)!=OMAGIC && ((x).a_magic)!=NMAGIC && ((x).a_magic)!=ZMAGIC)
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#endif
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/* From here down is common to both the HP and the generic machine */
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#define OMAGIC 0407
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#define NMAGIC 0410
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#define ZMAGIC 0413
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#define N_TXTOFF(x) \
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((x).a_magic == ZMAGIC ? 1024 : sizeof(struct exec))
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#define N_SYMOFF(x) \
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(N_TXTOFF(x) + (x).a_text + (x).a_data + (x).a_trsize + (x).a_drsize)
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#define N_STROFF(x) \
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(N_SYMOFF(x) + (x).a_syms)
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struct nlist {
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union {
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char *n_name;
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struct nlist *n_next;
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long n_strx;
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} n_un;
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char n_type;
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char n_other;
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short n_desc;
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unsigned n_value;
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};
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#define N_UNDF 0
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#define N_ABS 2
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#define N_TEXT 4
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#define N_DATA 6
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#define N_BSS 8
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#define N_FN 31 /* JF: Someone claims this should be 31 instead of
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15. I just inherited this file; I didn't write
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it. Who is right? */
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#define N_EXT 1
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#define N_TYPE 036
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#define N_STAB 0340
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struct relocation_info {
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int r_address;
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unsigned r_symbolnum:24,
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r_pcrel:1,
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r_length:2,
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r_extern:1,
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r_bsr:1, /* OVE: used on ns32k based systems, if you want */
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r_disp:1, /* OVE: used on ns32k based systems, if you want */
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nuthin:2;
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};
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#endif
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#endif
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