gdb/a68v-nat.c

   1 /* Host-dependent code for Apollo-68ks for GDB, the GNU debugger.
   2    Copyright 1986, 1987, 1989, 1991 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 "defs.h"
  22 #include "inferior.h"
  23
  24 #ifndef _ISP__M68K
  25 #define _ISP__M68K 1
  26 #endif
  27
  28 #include <ptrace.h>
  29
  30 extern int errno;
  31
  32 void
  33 fetch_inferior_registers (ignored)
  34      int ignored;
  35 {
  36   struct ptrace_$data_regs_m68k inferior_registers;
  37   struct ptrace_$floating_regs_m68k inferior_fp_registers;
  38   struct ptrace_$control_regs_m68k inferior_control_registers;
  39
  40   ptrace_$init_control (&inferior_control_registers);
  41   inferior_fp_registers.size = sizeof (inferior_fp_registers);
  42
  43   registers_fetched ();
  44
  45   ptrace (PTRACE_GETREGS, inferior_pid,
  46           (PTRACE_ARG3_TYPE) & inferior_registers,
  47           ptrace_$data_set,
  48           (PTRACE_ARG3_TYPE) & inferior_registers,
  49           ptrace_$data_set);
  50
  51   ptrace (PTRACE_GETREGS, inferior_pid,
  52           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  53           ptrace_$floating_set_m68k,
  54           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  55           ptrace_$floating_set_m68k);
  56
  57   ptrace (PTRACE_GETREGS, inferior_pid,
  58           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  59           ptrace_$control_set_m68k,
  60           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  61           ptrace_$control_set_m68k);
  62
  63   bcopy (&inferior_registers, registers, 16 * 4);
  64   bcopy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
  65          sizeof inferior_fp_registers.regs);
  66   *(int *) &registers[REGISTER_BYTE (PS_REGNUM)] = inferior_control_registers.sr;
  67   *(int *) &registers[REGISTER_BYTE (PC_REGNUM)] = inferior_control_registers.pc;
  68 }
  69
  70 /* Store our register values back into the inferior.
  71    If REGNO is -1, do this for all registers.
  72    Otherwise, REGNO specifies which register (so we can save time).  */
  73
  74 void
  75 store_inferior_registers (regno)
  76      int regno;
  77 {
  78   struct ptrace_$data_regs_m68k inferior_registers;
  79   struct ptrace_$floating_regs_m68k inferior_fp_registers;
  80   struct ptrace_$control_regs_m68k inferior_control_registers;
  81
  82   ptrace_$init_control (&inferior_control_registers);
  83   inferior_fp_registers.size = sizeof (inferior_fp_registers);
  84
  85   ptrace (PTRACE_GETREGS, inferior_pid,
  86           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  87           ptrace_$floating_set_m68k,
  88           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  89           ptrace_$floating_set_m68k);
  90
  91   ptrace (PTRACE_GETREGS, inferior_pid,
  92           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  93           ptrace_$control_set_m68k,
  94           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  95           ptrace_$control_set_m68k);
  96
  97   bcopy (registers, &inferior_registers, sizeof (inferior_registers));
  98
  99   bcopy (&registers[REGISTER_BYTE (FP0_REGNUM)], inferior_fp_registers.regs,
 100          sizeof inferior_fp_registers.regs);
 101
 102   inferior_control_registers.sr = *(int *) &registers[REGISTER_BYTE (PS_REGNUM)];
 103   inferior_control_registers.pc = *(int *) &registers[REGISTER_BYTE (PC_REGNUM)];
 104
 105   ptrace (PTRACE_SETREGS, inferior_pid,
 106           (PTRACE_ARG3_TYPE) & inferior_registers,
 107           ptrace_$data_set_m68k,
 108           (PTRACE_ARG3_TYPE) & inferior_registers,
 109           ptrace_$data_set_m68k);
 110
 111   ptrace (PTRACE_SETREGS, inferior_pid,
 112           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
 113           ptrace_$floating_set_m68k,
 114           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
 115           ptrace_$floating_set_m68k);
 116
 117   ptrace (PTRACE_SETREGS, inferior_pid,
 118           (PTRACE_ARG3_TYPE) & inferior_control_registers,
 119           ptrace_$control_set_m68k,
 120           (PTRACE_ARG3_TYPE) & inferior_control_registers,
 121           ptrace_$control_set_m68k);
 122 }