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markom |
/* Functions specific to running gdb native on a Motorola Delta Series sysV68.
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Copyright 1993, 1996, 1998, 2000 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 <sys/signal.h> /* for MAXSIG in sys/user.h */
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#include <sys/types.h> /* for ushort in sys/dir.h */
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#include <sys/dir.h> /* for struct direct in sys/user.h */
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#include <sys/user.h>
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#include <nlist.h>
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#if !defined (offsetof)
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#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
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#endif
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/* Return the address in the core dump or inferior of register REGNO.
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BLOCKEND is the address of the end of the user structure. */
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CORE_ADDR
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register_addr (int regno, CORE_ADDR blockend)
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{
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static int sysv68reg[] =
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{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, -1, 15, 16};
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if (regno >= 0 && regno < sizeof (sysv68reg) / sizeof (sysv68reg[0]))
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return blockend + sysv68reg[regno] * 4;
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else if (regno < FPC_REGNUM)
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return offsetof (struct user, u_fpu.regs.reg[regno - FP0_REGNUM][0]);
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else if (regno == FPC_REGNUM)
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return offsetof (struct user, u_fpu.regs.control);
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else if (regno == FPS_REGNUM)
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return offsetof (struct user, u_fpu.regs.status);
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else if (regno == FPI_REGNUM)
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return offsetof (struct user, u_fpu.regs.iaddr);
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else
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{
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fprintf_unfiltered (gdb_stderr, "\
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Internal error: invalid register number %d in REGISTER_U_ADDR\n",
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regno);
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return blockend;
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}
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}
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CORE_ADDR kernel_u_addr;
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/* Read the value of the u area from the kernel. */
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void
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_initialize_delta68_nat (void)
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{
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struct nlist nl[2];
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nl[0].n_name = "u";
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nl[1].n_name = NULL;
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if (nlist ("/sysV68", nl) == 0 && nl[0].n_scnum != 0)
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kernel_u_addr = nl[0].n_value;
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else
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{
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perror ("Cannot get kernel u area address");
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exit (1);
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}
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}
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clear_insn_cache (void)
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{
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#ifdef MCT_TEXT /* in sys/signal.h on sysV68 R3V7.1 */
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memctl (0, 4096, MCT_TEXT);
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#endif
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}
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kernel_u_size (void)
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{
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return sizeof (struct user);
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}
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