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 (int ignored)
  34 {
  35   struct ptrace_$data_regs_m68k inferior_registers;
  36   struct ptrace_$floating_regs_m68k inferior_fp_registers;
  37   struct ptrace_$control_regs_m68k inferior_control_registers;
  38
  39   ptrace_$init_control (&inferior_control_registers);
  40   inferior_fp_registers.size = sizeof (inferior_fp_registers);
  41
  42   registers_fetched ();
  43
  44   ptrace (PTRACE_GETREGS, inferior_pid,
  45           (PTRACE_ARG3_TYPE) & inferior_registers,
  46           ptrace_$data_set,
  47           (PTRACE_ARG3_TYPE) & inferior_registers,
  48           ptrace_$data_set);
  49
  50   ptrace (PTRACE_GETREGS, inferior_pid,
  51           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  52           ptrace_$floating_set_m68k,
  53           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  54           ptrace_$floating_set_m68k);
  55
  56   ptrace (PTRACE_GETREGS, inferior_pid,
  57           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  58           ptrace_$control_set_m68k,
  59           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  60           ptrace_$control_set_m68k);
  61
  62   bcopy (&inferior_registers, registers, 16 * 4);
  63   bcopy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
  64          sizeof inferior_fp_registers.regs);
  65   *(int *) &registers[REGISTER_BYTE (PS_REGNUM)] = inferior_control_registers.sr;
  66   *(int *) &registers[REGISTER_BYTE (PC_REGNUM)] = inferior_control_registers.pc;
  67 }
  68
  69 /* Store our register values back into the inferior.
  70    If REGNO is -1, do this for all registers.
  71    Otherwise, REGNO specifies which register (so we can save time).  */
  72
  73 void
  74 store_inferior_registers (int regno)
  75 {
  76   struct ptrace_$data_regs_m68k inferior_registers;
  77   struct ptrace_$floating_regs_m68k inferior_fp_registers;
  78   struct ptrace_$control_regs_m68k inferior_control_registers;
  79
  80   ptrace_$init_control (&inferior_control_registers);
  81   inferior_fp_registers.size = sizeof (inferior_fp_registers);
  82
  83   ptrace (PTRACE_GETREGS, inferior_pid,
  84           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  85           ptrace_$floating_set_m68k,
  86           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  87           ptrace_$floating_set_m68k);
  88
  89   ptrace (PTRACE_GETREGS, inferior_pid,
  90           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  91           ptrace_$control_set_m68k,
  92           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  93           ptrace_$control_set_m68k);
  94
  95   bcopy (registers, &inferior_registers, sizeof (inferior_registers));
  96
  97   bcopy (&registers[REGISTER_BYTE (FP0_REGNUM)], inferior_fp_registers.regs,
  98          sizeof inferior_fp_registers.regs);
  99
 100   inferior_control_registers.sr = *(int *) &registers[REGISTER_BYTE (PS_REGNUM)];
 101   inferior_control_registers.pc = *(int *) &registers[REGISTER_BYTE (PC_REGNUM)];
 102
 103   ptrace (PTRACE_SETREGS, inferior_pid,
 104           (PTRACE_ARG3_TYPE) & inferior_registers,
 105           ptrace_$data_set_m68k,
 106           (PTRACE_ARG3_TYPE) & inferior_registers,
 107           ptrace_$data_set_m68k);
 108
 109   ptrace (PTRACE_SETREGS, inferior_pid,
 110           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
 111           ptrace_$floating_set_m68k,
 112           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
 113           ptrace_$floating_set_m68k);
 114
 115   ptrace (PTRACE_SETREGS, inferior_pid,
 116           (PTRACE_ARG3_TYPE) & inferior_control_registers,
 117           ptrace_$control_set_m68k,
 118           (PTRACE_ARG3_TYPE) & inferior_control_registers,
 119           ptrace_$control_set_m68k);
 120 }