binutils-gdb/gdb/i386b-nat.c

73 lines
2.1 KiB
C
Raw Normal View History

/* Native-dependent code for BSD Unix running on i386's, for GDB.
2001-03-06 09:22:02 +01:00
Copyright 1988, 1989, 1991, 1992, 1994, 1995, 1996, 1998, 1999, 2000,
2001 Free Software Foundation, Inc.
1999-07-07 22:19:36 +02:00
This file is part of GDB.
1999-07-07 22:19:36 +02:00
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.
1999-07-07 22:19:36 +02:00
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.
1999-07-07 22:19:36 +02:00
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include <machine/reg.h>
/* This table must line up with REGISTER_NAME in "i386-tdep.c". */
/* symbols like 'tEAX' come from <machine/reg.h> */
1999-07-07 22:19:36 +02:00
static int tregmap[] =
{
tEAX, tECX, tEDX, tEBX,
tESP, tEBP, tESI, tEDI,
tEIP, tEFLAGS, tCS, tSS
};
#ifdef sEAX
1999-07-07 22:19:36 +02:00
static int sregmap[] =
{
sEAX, sECX, sEDX, sEBX,
sESP, sEBP, sESI, sEDI,
sEIP, sEFLAGS, sCS, sSS
};
#else /* No sEAX */
/* FreeBSD has decided to collapse the s* and t* symbols. So if the s*
ones aren't around, use the t* ones for sregmap too. */
1999-07-07 22:19:36 +02:00
static int sregmap[] =
{
tEAX, tECX, tEDX, tEBX,
tESP, tEBP, tESI, tEDI,
tEIP, tEFLAGS, tCS, tSS
};
#endif /* No sEAX */
/* blockend is the value of u.u_ar0, and points to the
place where ES is stored. */
int
2000-07-30 03:48:28 +02:00
i386_register_u_addr (int blockend, int regnum)
{
/* The following condition is a kludge to get at the proper register map
depending upon the state of pcb_flag.
The proper condition would be
if (u.u_pcb.pcb_flag & FM_TRAP)
but that would require a ptrace call here and wouldn't work
for corefiles. */
if (blockend < 0x1fcc)
return (blockend + 4 * tregmap[regnum]);
else
return (blockend + 4 * sregmap[regnum]);
}