ea8c7ac7d0
This is a greatly pared down version of the full gdb-4.12, all the config stuff has been removed and the supporting libraries have been stripped to a minimum. This is a 1.1.5 only port, I'll do a more complete port for 2.0 which will have all the config stuff and will install the gnu support libraries as system libraries like we do for readline. There wasn't much point for 1.1.5 since only gdb would use them so I went for saving space instead. For 2.0 I'll config all the other gnu tools to use them as well.
112 lines
3.6 KiB
C
112 lines
3.6 KiB
C
/* BFD back-end for i386 a.out binaries under BSD.
|
|
Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
/* This data should be correct for the format used under all the various
|
|
BSD ports for 386 machines. */
|
|
|
|
#define BYTES_IN_WORD 4
|
|
#define ARCH 32
|
|
|
|
/* ZMAGIC files never have the header in the text. */
|
|
#define N_HEADER_IN_TEXT(x) 0
|
|
|
|
/* ZMAGIC files start at address 0. This does not apply to QMAGIC. */
|
|
#define TEXT_START_ADDR 0
|
|
|
|
#define PAGE_SIZE 4096
|
|
#define SEGMENT_SIZE PAGE_SIZE
|
|
|
|
#define DEFAULT_ARCH bfd_arch_i386
|
|
#define MACHTYPE_OK(mtype) ((mtype) == M_386 || (mtype) == M_386_NETBSD || (mtype) == M_UNKNOWN)
|
|
|
|
#define MY(OP) CAT(freebsd386_,OP)
|
|
#define TARGETNAME "a.out-freebsd-386"
|
|
|
|
#define N_MAGIC(ex) \
|
|
((ex).a_info & 0xffff)
|
|
#define N_MACHTYPE(ex) \
|
|
( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETMID_NET(ex) : \
|
|
((ex).a_info >> 16) & 0x03ff )
|
|
#define N_FLAGS(ex) \
|
|
( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETFLAG_NET(ex) : \
|
|
((ex).a_info >> 26) & 0x3f )
|
|
#define N_SET_INFO(ex,mag,mid,flag) \
|
|
( (ex).a_info = (((flag) & 0x3f) <<26) | (((mid) & 0x03ff) << 16) | \
|
|
((mag) & 0xffff) )
|
|
|
|
#define N_GETMAGIC_NET(ex) \
|
|
(ntohl((ex).a_info) & 0xffff)
|
|
#define N_GETMID_NET(ex) \
|
|
((ntohl((ex).a_info) >> 16) & 0x03ff)
|
|
#define N_GETFLAG_NET(ex) \
|
|
((ntohl((ex).a_info) >> 26) & 0x3f)
|
|
#define N_SETMAGIC_NET(ex,mag,mid,flag) \
|
|
( (ex).a_info = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
|
|
(((mag)&0xffff)) ) )
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "libbfd.h"
|
|
#include "libaout.h"
|
|
|
|
#define N_ALIGN(ex,x) \
|
|
(N_MAGIC(ex) == ZMAGIC || N_MAGIC(ex) == QMAGIC || \
|
|
N_GETMAGIC_NET(ex) == ZMAGIC || N_GETMAGIC_NET(ex) == QMAGIC ? \
|
|
((x) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1) : (x))
|
|
|
|
/* Valid magic number check. */
|
|
#define N_BADMAG(ex) \
|
|
(N_MAGIC(ex) != OMAGIC && N_MAGIC(ex) != NMAGIC && \
|
|
N_MAGIC(ex) != ZMAGIC && N_MAGIC(ex) != QMAGIC && \
|
|
N_GETMAGIC_NET(ex) != OMAGIC && N_GETMAGIC_NET(ex) != NMAGIC && \
|
|
N_GETMAGIC_NET(ex) != ZMAGIC && N_GETMAGIC_NET(ex) != QMAGIC)
|
|
|
|
/* Address of the bottom of the text segment. */
|
|
#define N_TXTADDR(ex) \
|
|
((N_MAGIC(ex) == OMAGIC || N_MAGIC(ex) == NMAGIC || \
|
|
N_MAGIC(ex) == ZMAGIC) ? 0 : PAGE_SIZE)
|
|
|
|
/* Address of the bottom of the data segment. */
|
|
#define N_DATADDR(ex) \
|
|
N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)
|
|
|
|
/* Text segment offset. */
|
|
#define N_TXTOFF(ex) \
|
|
(N_MAGIC(ex) == ZMAGIC ? PAGE_SIZE : (N_MAGIC(ex) == QMAGIC || \
|
|
N_GETMAGIC_NET(ex) == ZMAGIC) ? 0 : EXEC_BYTES_SIZE)
|
|
|
|
/* Data segment offset. */
|
|
#define N_DATOFF(ex) \
|
|
N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
|
|
|
|
/* Relocation table offset. */
|
|
#define N_RELOFF(ex) \
|
|
N_ALIGN(ex, N_DATOFF(ex) + (ex).a_data)
|
|
|
|
/* Symbol table offset. */
|
|
#define N_SYMOFF(ex) \
|
|
(N_RELOFF(ex) + (ex).a_trsize + (ex).a_drsize)
|
|
|
|
/* String table offset. */
|
|
#define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms)
|
|
|
|
#define NO_SWAP_MAGIC /* magic number already in correct endian format */
|
|
|
|
#include "aout-target.h"
|