gdb/m68knbsd-nat.c

   1 /* Native-dependent code for Motorola m68k's running NetBSD, for GDB.
   2    Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include <sys/types.h>
  24 #include <sys/ptrace.h>
  25 #include <machine/reg.h>
  26 #include <machine/frame.h>
  27 #include "inferior.h"
  28 #include "gdbcore.h"
  29 #include "regcache.h"
  30
  31 void
  32 fetch_inferior_registers (int regno)
  33 {
  34   struct reg inferior_registers;
  35   struct fpreg inferior_fp_registers;
  36
  37   ptrace (PT_GETREGS, PIDGET (inferior_ptid),
  38           (PTRACE_ARG3_TYPE) & inferior_registers, 0);
  39   memcpy (&deprecated_registers[REGISTER_BYTE (0)], &inferior_registers,
  40           sizeof (inferior_registers));
  41
  42   ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
  43           (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
  44   memcpy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
  45           sizeof (inferior_fp_registers));
  46
  47   deprecated_registers_fetched ();
  48 }
  49
  50 void
  51 store_inferior_registers (int regno)
  52 {
  53   struct reg inferior_registers;
  54   struct fpreg inferior_fp_registers;
  55
  56   memcpy (&inferior_registers, &deprecated_registers[REGISTER_BYTE (0)],
  57           sizeof (inferior_registers));
  58   ptrace (PT_SETREGS, PIDGET (inferior_ptid),
  59           (PTRACE_ARG3_TYPE) & inferior_registers, 0);
  60
  61   memcpy (&inferior_fp_registers, &deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
  62           sizeof (inferior_fp_registers));
  63   ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
  64           (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
  65 }
  66
  67 struct md_core
  68 {
  69   struct reg intreg;
  70   struct fpreg freg;
  71 };
  72
  73 static void
  74 fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
  75                       CORE_ADDR ignore)
  76 {
  77   struct md_core *core_reg = (struct md_core *) core_reg_sect;
  78
  79   /* Integer registers */
  80   memcpy (&deprecated_registers[REGISTER_BYTE (0)],
  81           &core_reg->intreg, sizeof (struct reg));
  82   /* Floating point registers */
  83   memcpy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
  84           &core_reg->freg, sizeof (struct fpreg));
  85 }
  86
  87 /* Register that we are able to handle m68knbsd core file formats.
  88    FIXME: is this really bfd_target_unknown_flavour? */
  89
  90 static struct core_fns m68knbsd_core_fns =
  91 {
  92   bfd_target_unknown_flavour,           /* core_flavour */
  93   default_check_format,                 /* check_format */
  94   default_core_sniffer,                 /* core_sniffer */
  95   fetch_core_registers,                 /* core_read_registers */
  96   NULL                                  /* next */
  97 };
  98
  99 void
 100 _initialize_m68knbsd_nat (void)
 101 {
 102   add_core_fns (&m68knbsd_core_fns);
 103 }