113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/* BFD back-end for NetBSD/386 a.out-ish binaries.
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Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program 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 of the License, or
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(at your option) any later version.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define BYTES_IN_WORD 4
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#define ARCH 32
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/* ZMAGIC files never have the header in the text. */
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#define N_HEADER_IN_TEXT(x) 0
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/* ZMAGIC files start at address 0. This does not apply to QMAGIC. */
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#define TEXT_START_ADDR 0
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#define PAGE_SIZE 4096
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#define SEGMENT_SIZE PAGE_SIZE
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#define DEFAULT_ARCH bfd_arch_i386
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#define MACHTYPE_OK(mtype) ((mtype) == M_386 || (mtype) == M_386_NETBSD || (mtype) == M_UNKNOWN)
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#define MY(OP) CAT(netbsd386_,OP)
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/* This needs to start with a.out so GDB knows it is an a.out variant. */
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#define TARGETNAME "a.out-netbsd-386"
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#define N_MAGIC(ex) \
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( (((ex).a_info)&0xffff0000) ? (ntohl(((ex).a_info))&0xffff) : ((ex).a_info))
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#define N_MACHTYPE(ex) \
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( (((ex).a_info)&0xffff0000) ? ((ntohl(((ex).a_info))>>16)&0x03ff) : 0 )
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# define N_FLAGS(ex) \
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( (((ex).a_info)&0xffff0000) ? ((ntohl(((ex).a_info))>>26)&0x3f) : 0 )
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#define N_SET_INFO(ex, mag,mid,flag) \
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( (ex).a_info = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
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(((mag)&0xffff)) ) )
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#define N_SET_MAGIC(exec,magic) \
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((exec).a_info = (((exec).a_info & ~0xffff) | ((magic) & 0xffff)))
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#define N_SET_MACHTYPE(exec,machtype) \
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((exec).a_info = \
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(((exec).a_info & ~(0x3ff<<16)) | (((machtype)&0xff) << 16)))
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#define N_SET_FLAGS(exec, flags) \
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((exec).a_info = ((exec).a_info & 0xffff) | (flags & 0xffff))
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "libaout.h"
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#define N_GETMAGIC2(ex) \
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( (((ex).a_info)&0xffff0000) ? (ntohl(((ex).a_info))&0xffff) : \
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(((ex).a_info) | 0x10000) )
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#define N_TXTADDR(ex) (N_GETMAGIC2(ex) == (ZMAGIC|0x10000) ? 0 : 4096)
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#define N_TXTOFF(ex) \
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( N_GETMAGIC2(ex)==ZMAGIC || N_GETMAGIC2(ex)==(QMAGIC|0x10000) ? \
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0 : (N_GETMAGIC2(ex)==(ZMAGIC|0x10000) ? 4096 : EXEC_BYTES_SIZE ))
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#define N_ALIGN(ex,x) \
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(N_MAGIC(ex) == ZMAGIC || N_MAGIC(ex) == QMAGIC ? \
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((x) + 4096 - 1) & ~(4096 - 1) : (x))
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#define N_DATADDR(ex) \
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N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)
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/* Data segment offset. */
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#define N_DATOFF(ex) \
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N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
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/* #define N_BADMAG(x) n_badmag(N_MAGIC(x)) */
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#define NO_SWAP_MAGIC /* magic number already in correct endian format */
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#include "aout-target.h"
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#if 0
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int
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n_badmag(x)
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unsigned long x; {
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union {
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unsigned long l;
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unsigned char c[sizeof(unsigned long)];
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} l;
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unsigned char temp;
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printf ("x = %o, OMAGIC = %o, NMAGIC = %o, ZMAGIC = %o, QMAGIC = %o\n",
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x, OMAGIC, NMAGIC, ZMAGIC, QMAGIC);
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l.l = x;
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temp = l.c[0];
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l.c[0] = l.c[3];
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l.c[3] = temp;
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temp = l.c[2];
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l.c[2] = l.c[1];
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l.c[1] = temp;
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printf ("\tbyte-swapped(x) = %o\n", l.l);
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return (x != OMAGIC
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&& x != NMAGIC
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&& x != ZMAGIC
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&& x != QMAGIC);
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}
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#endif
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