1993-07-11 23:29:31 +00:00
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/* DPX2 host interface.
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Copyright (C) 1988, 1989, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "gdbcore.h"
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#include <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 (blockend, regnum)
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int blockend;
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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_kernel_u_addr ()
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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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