mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-05 02:47:05 +00:00
3f99570ec9
and do the swapping here rather than calling ntohl from the N_* macros. This cleans up assumptions about the size of a host long, the existence to ntohl, etc.
116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/* BFD back-end for NetBSD/386 a.out-ish binaries.
|
|
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. */
|
|
|
|
#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 N_SHARED_LIB(x) 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(netbsd386_,OP)
|
|
/* This needs to start with a.out so GDB knows it is an a.out variant. */
|
|
#define TARGETNAME "a.out-netbsd-386"
|
|
|
|
#define N_MAGIC(ex) \
|
|
( (((ex).a_info)&0xffff0000) ? ((((ex).a_info))&0xffff) : ((ex).a_info))
|
|
#define N_MACHTYPE(ex) \
|
|
( (((ex).a_info)&0xffff0000) ? (((((ex).a_info))>>16)&0x03ff) : 0 )
|
|
# define N_FLAGS(ex) \
|
|
( (((ex).a_info)&0xffff0000) ? ((((ex).a_info)>>26)&0x3f) : 0 )
|
|
#define N_SET_INFO(ex, mag,mid,flag) \
|
|
( (ex).a_info = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
|
|
(((mag)&0xffff)) ) )
|
|
#define N_SET_MAGIC(exec,magic) \
|
|
((exec).a_info = (((exec).a_info & ~0xffff) | ((magic) & 0xffff)))
|
|
#define N_SET_MACHTYPE(exec,machtype) \
|
|
((exec).a_info = \
|
|
(((exec).a_info & ~(0x3ff<<16)) | (((machtype)&0xff) << 16)))
|
|
#define N_SET_FLAGS(exec, flags) \
|
|
((exec).a_info = ((exec).a_info & 0xffff) | (flags & 0xffff))
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "libbfd.h"
|
|
#include "libaout.h"
|
|
|
|
#define N_GETMAGIC2(ex) \
|
|
( (((ex).a_info)&0xffff0000) ? ((((ex).a_info))&0xffff) : \
|
|
(((ex).a_info) | 0x10000) )
|
|
|
|
#define N_TXTADDR(ex) (N_GETMAGIC2(ex) == (ZMAGIC|0x10000) ? 0 : 4096)
|
|
#define N_TXTOFF(ex) \
|
|
( N_GETMAGIC2(ex)==ZMAGIC || N_GETMAGIC2(ex)==(QMAGIC|0x10000) ? \
|
|
0 : (N_GETMAGIC2(ex)==(ZMAGIC|0x10000) ? 4096 : EXEC_BYTES_SIZE ))
|
|
#define N_ALIGN(ex,x) \
|
|
(N_MAGIC(ex) == ZMAGIC || N_MAGIC(ex) == QMAGIC ? \
|
|
((x) + 4096 - 1) & ~(4096 - 1) : (x))
|
|
#define N_DATADDR(ex) \
|
|
N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)
|
|
/* Data segment offset. */
|
|
#define N_DATOFF(ex) \
|
|
N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
|
|
|
|
/* #define N_BADMAG(x) n_badmag(N_MAGIC(x)) */
|
|
|
|
/* On NetBSD, the magic number is always in ntohl's "network" (big-endian)
|
|
format. */
|
|
#define SWAP_MAGIC(ext) bfd_getb32 (ext)
|
|
|
|
#include "aout-target.h"
|
|
|
|
#if 0
|
|
int
|
|
n_badmag(x)
|
|
unsigned long x; {
|
|
union {
|
|
unsigned long l;
|
|
unsigned char c[sizeof(unsigned long)];
|
|
} l;
|
|
unsigned char temp;
|
|
|
|
printf ("x = %o, OMAGIC = %o, NMAGIC = %o, ZMAGIC = %o, QMAGIC = %o\n",
|
|
x, OMAGIC, NMAGIC, ZMAGIC, QMAGIC);
|
|
|
|
l.l = x;
|
|
temp = l.c[0];
|
|
l.c[0] = l.c[3];
|
|
l.c[3] = temp;
|
|
temp = l.c[2];
|
|
l.c[2] = l.c[1];
|
|
l.c[1] = temp;
|
|
printf ("\tbyte-swapped(x) = %o\n", l.l);
|
|
|
|
return (x != OMAGIC
|
|
&& x != NMAGIC
|
|
&& x != ZMAGIC
|
|
&& x != QMAGIC);
|
|
}
|
|
#endif
|
|
|