home *** CD-ROM | disk | FTP | other *** search
- /* Functions specific to running gdb native on a Motorola Delta Series sysV68.
- Copyright (C) 1993, 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., 675 Mass Ave, Cambridge, MA 02139, 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. */
-
- unsigned int
- register_addr (regno, blockend)
- int regno;
- int 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);
- }
- }
-