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, Boston, MA 02111-1307, USA.  */
  19
  20 #include "defs.h"
  21 #include "inferior.h"
  22
  23 #ifndef _ISP__M68K
  24 #define _ISP__M68K 1
  25 #endif
  26
  27 #include <ptrace.h>
  28
  29 extern int errno;
  30
  31 void
  32 fetch_inferior_registers (ignored)
  33     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 (regno)
  75      int regno;
  76 {
  77   struct ptrace_$data_regs_m68k inferior_registers;
  78   struct ptrace_$floating_regs_m68k inferior_fp_registers;
  79   struct ptrace_$control_regs_m68k inferior_control_registers;
  80
  81   ptrace_$init_control(&inferior_control_registers);
  82   inferior_fp_registers.size = sizeof(inferior_fp_registers);
  83
  84   ptrace (PTRACE_GETREGS, inferior_pid,
  85         (PTRACE_ARG3_TYPE) &inferior_fp_registers,
  86         ptrace_$floating_set_m68k,
  87         (PTRACE_ARG3_TYPE) &inferior_fp_registers,
  88         ptrace_$floating_set_m68k);
  89
  90   ptrace (PTRACE_GETREGS, inferior_pid,
  91         (PTRACE_ARG3_TYPE) &inferior_control_registers,
  92         ptrace_$control_set_m68k,
  93         (PTRACE_ARG3_TYPE) &inferior_control_registers,
  94         ptrace_$control_set_m68k);
  95
  96   bcopy (registers, &inferior_registers, sizeof(inferior_registers));
  97
  98   bcopy (&registers[REGISTER_BYTE (FP0_REGNUM)], inferior_fp_registers.regs,
  99          sizeof inferior_fp_registers.regs);
 100
 101   inferior_control_registers.sr = *(int *)&registers[REGISTER_BYTE (PS_REGNUM)];
 102   inferior_control_registers.pc = *(int *)&registers[REGISTER_BYTE (PC_REGNUM)];
 103
 104   ptrace (PTRACE_SETREGS, inferior_pid,
 105           (PTRACE_ARG3_TYPE) &inferior_registers,
 106           ptrace_$data_set_m68k,
 107           (PTRACE_ARG3_TYPE) &inferior_registers,
 108           ptrace_$data_set_m68k);
 109
 110   ptrace (PTRACE_SETREGS, inferior_pid,
 111           (PTRACE_ARG3_TYPE) &inferior_fp_registers,
 112           ptrace_$floating_set_m68k,
 113           (PTRACE_ARG3_TYPE) &inferior_fp_registers,
 114           ptrace_$floating_set_m68k);
 115
 116   ptrace (PTRACE_SETREGS, inferior_pid,
 117           (PTRACE_ARG3_TYPE) &inferior_control_registers,
 118           ptrace_$control_set_m68k,
 119           (PTRACE_ARG3_TYPE) &inferior_control_registers,
 120           ptrace_$control_set_m68k);
 121 }