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[/] [or1k/] [trunk/] [insight/] [gdb/] [dpx2-nat.c] - Blame information for rev 1765

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1 578 markom
/* DPX2 host interface.
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   Copyright 1988, 1989, 1991, 1993, 1995, 2000
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   Free Software Foundation, Inc.
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   This file is part of GDB.
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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., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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#include "defs.h"
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#include "gdbcore.h"
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#include "gdb_string.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include <sys/user.h>
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#include <sys/reg.h>
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#include <sys/utsname.h>
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/* this table must line up with REGISTER_NAMES in tm-68k.h */
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/* symbols like 'A0' come from <sys/reg.h> */
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static int regmap[] =
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{
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  R0, R1, R2, R3, R4, R5, R6, R7,
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  A0, A1, A2, A3, A4, A5, A6, SP,
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  PS, PC,
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  FP0, FP1, FP2, FP3, FP4, FP5, FP6, FP7,
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  FP_CR, FP_SR, FP_IAR
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};
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/* blockend is the value of u.u_ar0, and points to the
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 * place where D0 is stored
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 */
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int
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dpx2_register_u_addr (int blockend, int regnum)
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{
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  if (regnum < FP0_REGNUM)
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    return (blockend + 4 * regmap[regnum]);
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  else
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    return (int) &(((struct user *) 0)->u_fpstate[regmap[regnum]]);
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}
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/* This is the amount to subtract from u.u_ar0
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   to get the offset in the core file of the register values.
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   Unfortunately this is not provided in the system header files.
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   To make matters worse, this value also differs between
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   the dpx/2200 and dpx/2300 models and nlist is not available on the dpx2.
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   We use utsname() to decide on which model we are running.
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   FIXME: This breaks cross examination of core files (it would not be hard
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   to check whether u.u_ar0 is between 0x7fff5000 and 0x7fffc000 and if so
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   use 0x7fff5000 and if not use 0x7fffc000.  FIXME).  */
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#define KERNEL_U_ADDR_200 0x7fff5000
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#define KERNEL_U_ADDR_300 0x7fffc000
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CORE_ADDR kernel_u_addr;
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void
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_initialize_dpx2_nat (void)
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{
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  struct utsname uts;
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  if (uname (&uts) == 0 && strcmp (uts.machine, "DPX/2200") == 0)
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    kernel_u_addr = KERNEL_U_ADDR_200;
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  else
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    kernel_u_addr = KERNEL_U_ADDR_300;
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}

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