[deliverable/binutils-gdb.git] / gdb / delta68-nat.c

/* Functions specific to running gdb native on a Motorola Delta Series sysV68.
   Copyright (C) 1993, 1997-98, Free Software Foundation, Inc.

   This file is part of GDB.

   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., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include "defs.h"
#include <sys/signal.h>		/* for MAXSIG in sys/user.h */
#include <sys/types.h>		/* for ushort in sys/dir.h */
#include <sys/dir.h>		/* for struct direct in sys/user.h */
#include <sys/user.h>

#include <nlist.h>

#if !defined (offsetof)
#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
#endif

/* Return the address in the core dump or inferior of register REGNO.
   BLOCKEND is the address of the end of the user structure.  */

CORE_ADDR
register_addr (regno, blockend)
     int regno;
     CORE_ADDR blockend;
{
  static int sysv68reg[] =
  {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, -1, 15, 16};

  if (regno >= 0 && regno < sizeof (sysv68reg) / sizeof (sysv68reg[0]))
    return blockend + sysv68reg[regno] * 4;
  else if (regno < FPC_REGNUM)
    return offsetof (struct user, u_fpu.regs.reg[regno - FP0_REGNUM][0]);
  else if (regno == FPC_REGNUM)
    return offsetof (struct user, u_fpu.regs.control);
  else if (regno == FPS_REGNUM)
    return offsetof (struct user, u_fpu.regs.status);
  else if (regno == FPI_REGNUM)
    return offsetof (struct user, u_fpu.regs.iaddr);
  else
    {
      fprintf_unfiltered (gdb_stderr, "\
Internal error: invalid register number %d in REGISTER_U_ADDR\n",
			  regno);
      return blockend;
    }
}

CORE_ADDR kernel_u_addr;

/* Read the value of the u area from the kernel.  */
void
_initialize_delta68_nat ()
{
  struct nlist nl[2];

  nl[0].n_name = "u";
  nl[1].n_name = NULL;
  if (nlist ("/sysV68", nl) == 0 && nl[0].n_scnum != 0)
    kernel_u_addr = nl[0].n_value;
  else
    {
      perror ("Cannot get kernel u area address");
      exit (1);
    }
}

clear_insn_cache ()
{
#ifdef MCT_TEXT			/* in sys/signal.h on sysV68 R3V7.1 */
  memctl (0, 4096, MCT_TEXT);
#endif
}

kernel_u_size ()
{
  return sizeof (struct user);
}
Commit	Line	Data
	1	/* Functions specific to running gdb native on a Motorola Delta Series sysV68.
	2	Copyright (C) 1993, 1997-98, Free Software Foundation, Inc.
	3
	4	This file is part of GDB.
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place - Suite 330,
	19	Boston, MA 02111-1307, USA. */
	20
	21	#include "defs.h"
	22	#include <sys/signal.h> /* for MAXSIG in sys/user.h */
	23	#include <sys/types.h> /* for ushort in sys/dir.h */
	24	#include <sys/dir.h> /* for struct direct in sys/user.h */
	25	#include <sys/user.h>
	26
	27	#include <nlist.h>
	28
	29	#if !defined (offsetof)
	30	#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
	31	#endif
	32
	33	/* Return the address in the core dump or inferior of register REGNO.
	34	BLOCKEND is the address of the end of the user structure. */
	35
	36	CORE_ADDR
	37	register_addr (regno, blockend)
	38	int regno;
	39	CORE_ADDR blockend;
	40	{
	41	static int sysv68reg[] =
	42	{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, -1, 15, 16};
	43
	44	if (regno >= 0 && regno < sizeof (sysv68reg) / sizeof (sysv68reg[0]))
	45	return blockend + sysv68reg[regno] * 4;
	46	else if (regno < FPC_REGNUM)
	47	return offsetof (struct user, u_fpu.regs.reg[regno - FP0_REGNUM][0]);
	48	else if (regno == FPC_REGNUM)
	49	return offsetof (struct user, u_fpu.regs.control);
	50	else if (regno == FPS_REGNUM)
	51	return offsetof (struct user, u_fpu.regs.status);
	52	else if (regno == FPI_REGNUM)
	53	return offsetof (struct user, u_fpu.regs.iaddr);
	54	else
	55	{
	56	fprintf_unfiltered (gdb_stderr, "\
	57	Internal error: invalid register number %d in REGISTER_U_ADDR\n",
	58	regno);
	59	return blockend;
	60	}
	61	}
	62
	63	CORE_ADDR kernel_u_addr;
	64
	65	/* Read the value of the u area from the kernel. */
	66	void
	67	_initialize_delta68_nat ()
	68	{
	69	struct nlist nl[2];
	70
	71	nl[0].n_name = "u";
	72	nl[1].n_name = NULL;
	73	if (nlist ("/sysV68", nl) == 0 && nl[0].n_scnum != 0)
	74	kernel_u_addr = nl[0].n_value;
	75	else
	76	{
	77	perror ("Cannot get kernel u area address");
	78	exit (1);
	79	}
	80	}
	81
	82	clear_insn_cache ()
	83	{
	84	#ifdef MCT_TEXT /* in sys/signal.h on sysV68 R3V7.1 */
	85	memctl (0, 4096, MCT_TEXT);
	86	#endif
	87	}
	88
	89	kernel_u_size ()
	90	{
	91	return sizeof (struct user);
	92	}