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 (regno)
  31      int regno;
  32 {
  33   struct reg inferior_registers;
  34   struct fpreg inferior_fp_registers;
  35
  36   ptrace (PT_GETREGS, inferior_pid,
  37           (PTRACE_ARG3_TYPE) & inferior_registers, 0);
  38   memcpy (&registers[REGISTER_BYTE (0)], &inferior_registers,
  39           sizeof (inferior_registers));
  40
  41   ptrace (PT_GETFPREGS, inferior_pid,
  42           (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
  43   memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
  44           sizeof (inferior_fp_registers));
  45
  46   registers_fetched ();
  47 }
  48
  49 void
  50 store_inferior_registers (regno)
  51      int regno;
  52 {
  53   struct reg inferior_registers;
  54   struct fpreg inferior_fp_registers;
  55
  56   memcpy (&inferior_registers, &registers[REGISTER_BYTE (0)],
  57           sizeof (inferior_registers));
  58   ptrace (PT_SETREGS, inferior_pid,
  59           (PTRACE_ARG3_TYPE) & inferior_registers, 0);
  60
  61   memcpy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
  62           sizeof (inferior_fp_registers));
  63   ptrace (PT_SETFPREGS, inferior_pid,
  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 (core_reg_sect, core_reg_size, which, ignore)
  75      char *core_reg_sect;
  76      unsigned core_reg_size;
  77      int which;
  78      CORE_ADDR ignore;
  79 {
  80   struct md_core *core_reg = (struct md_core *) core_reg_sect;
  81
  82   /* Integer registers */
  83   memcpy (&registers[REGISTER_BYTE (0)],
  84           &core_reg->intreg, sizeof (struct reg));
  85   /* Floating point registers */
  86   memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)],
  87           &core_reg->freg, sizeof (struct fpreg));
  88 }
  89
  90 /* Register that we are able to handle m68knbsd core file formats.
  91    FIXME: is this really bfd_target_unknown_flavour? */
  92
  93 static struct core_fns m68knbsd_core_fns =
  94 {
  95   bfd_target_unknown_flavour,           /* core_flavour */
  96   default_check_format,                 /* check_format */
  97   default_core_sniffer,                 /* core_sniffer */
  98   fetch_core_registers,                 /* core_read_registers */
  99   NULL                                  /* next */
 100 };
 101
 102 void
 103 _initialize_m68knbsd_nat ()
 104 {
 105   add_core_fns (&m68knbsd_core_fns);
 106 }