gdb/m68knbsd-nat.c

   1 /* Native-dependent code for Motorola m68k's running NetBSD, for GDB.
   2    Copyright 1988, 1989, 1991, 1992, 1994, 1996 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 <sys/types.h>
  22 #include <sys/ptrace.h>
  23 #include <machine/reg.h>
  24 #include <machine/frame.h>
  25
  26 #include "defs.h"
  27 #include "inferior.h"
  28
  29 void
  30 fetch_inferior_registers (int regno)
  31 {
  32   struct reg inferior_registers;
  33   struct fpreg inferior_fp_registers;
  34
  35   ptrace (PT_GETREGS, inferior_pid,
  36           (PTRACE_ARG3_TYPE) & inferior_registers, 0);
  37   memcpy (&registers[REGISTER_BYTE (0)], &inferior_registers,
  38           sizeof (inferior_registers));
  39
  40   ptrace (PT_GETFPREGS, inferior_pid,
  41           (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
  42   memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
  43           sizeof (inferior_fp_registers));
  44
  45   registers_fetched ();
  46 }
  47
  48 void
  49 store_inferior_registers (int regno)
  50 {
  51   struct reg inferior_registers;
  52   struct fpreg inferior_fp_registers;
  53
  54   memcpy (&inferior_registers, &registers[REGISTER_BYTE (0)],
  55           sizeof (inferior_registers));
  56   ptrace (PT_SETREGS, inferior_pid,
  57           (PTRACE_ARG3_TYPE) & inferior_registers, 0);
  58
  59   memcpy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
  60           sizeof (inferior_fp_registers));
  61   ptrace (PT_SETFPREGS, inferior_pid,
  62           (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
  63 }
  64
  65 struct md_core
  66 {
  67   struct reg intreg;
  68   struct fpreg freg;
  69 };
  70
  71 static void
  72 fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
  73                       CORE_ADDR ignore)
  74 {
  75   struct md_core *core_reg = (struct md_core *) core_reg_sect;
  76
  77   /* Integer registers */
  78   memcpy (&registers[REGISTER_BYTE (0)],
  79           &core_reg->intreg, sizeof (struct reg));
  80   /* Floating point registers */
  81   memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)],
  82           &core_reg->freg, sizeof (struct fpreg));
  83 }
  84
  85 /* Register that we are able to handle m68knbsd core file formats.
  86    FIXME: is this really bfd_target_unknown_flavour? */
  87
  88 static struct core_fns m68knbsd_core_fns =
  89 {
  90   bfd_target_unknown_flavour,           /* core_flavour */
  91   default_check_format,                 /* check_format */
  92   default_core_sniffer,                 /* core_sniffer */
  93   fetch_core_registers,                 /* core_read_registers */
  94   NULL                                  /* next */
  95 };
  96
  97 void
  98 _initialize_m68knbsd_nat (void)
  99 {
 100   add_core_fns (&m68knbsd_core_fns);
 101 }