gdb/a68v-nat.c

   1 /* Host-dependent code for Apollo-68ks for GDB, the GNU debugger.
   2    Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1999, 2000, 2001
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "inferior.h"
  24 #include "regcache.h"
  25
  26 #ifndef _ISP__M68K
  27 #define _ISP__M68K 1
  28 #endif
  29
  30 #include <ptrace.h>
  31
  32 extern int errno;
  33
  34 void
  35 fetch_inferior_registers (int ignored)
  36 {
  37   struct ptrace_$data_regs_m68k inferior_registers;
  38   struct ptrace_$floating_regs_m68k inferior_fp_registers;
  39   struct ptrace_$control_regs_m68k inferior_control_registers;
  40
  41   ptrace_$init_control (&inferior_control_registers);
  42   inferior_fp_registers.size = sizeof (inferior_fp_registers);
  43
  44   deprecated_registers_fetched ();
  45
  46   ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid),
  47           (PTRACE_ARG3_TYPE) & inferior_registers,
  48           ptrace_$data_set,
  49           (PTRACE_ARG3_TYPE) & inferior_registers,
  50           ptrace_$data_set);
  51
  52   ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid),
  53           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  54           ptrace_$floating_set_m68k,
  55           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  56           ptrace_$floating_set_m68k);
  57
  58   ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid),
  59           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  60           ptrace_$control_set_m68k,
  61           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  62           ptrace_$control_set_m68k);
  63
  64   bcopy (&inferior_registers, &deprecated_registers[0], 16 * 4);
  65   bcopy (&inferior_fp_registers,
  66          &deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
  67          sizeof inferior_fp_registers.regs);
  68   *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)]
  69     = inferior_control_registers.sr;
  70   *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)]
  71     = inferior_control_registers.pc;
  72 }
  73
  74 /* Store our register values back into the inferior.
  75    If REGNO is -1, do this for all registers.
  76    Otherwise, REGNO specifies which register (so we can save time).  */
  77
  78 void
  79 store_inferior_registers (int regno)
  80 {
  81   struct ptrace_$data_regs_m68k inferior_registers;
  82   struct ptrace_$floating_regs_m68k inferior_fp_registers;
  83   struct ptrace_$control_regs_m68k inferior_control_registers;
  84
  85   ptrace_$init_control (&inferior_control_registers);
  86   inferior_fp_registers.size = sizeof (inferior_fp_registers);
  87
  88   ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid),
  89           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  90           ptrace_$floating_set_m68k,
  91           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
  92           ptrace_$floating_set_m68k);
  93
  94   ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid),
  95           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  96           ptrace_$control_set_m68k,
  97           (PTRACE_ARG3_TYPE) & inferior_control_registers,
  98           ptrace_$control_set_m68k);
  99
 100   bcopy (&deprecated_registers[0], &inferior_registers,
 101          sizeof (inferior_registers));
 102
 103   bcopy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
 104          inferior_fp_registers.regs, sizeof inferior_fp_registers.regs);
 105
 106   inferior_control_registers.sr
 107     = *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)];
 108   inferior_control_registers.pc
 109     = *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)];
 110
 111   ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid),
 112           (PTRACE_ARG3_TYPE) & inferior_registers,
 113           ptrace_$data_set_m68k,
 114           (PTRACE_ARG3_TYPE) & inferior_registers,
 115           ptrace_$data_set_m68k);
 116
 117   ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid),
 118           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
 119           ptrace_$floating_set_m68k,
 120           (PTRACE_ARG3_TYPE) & inferior_fp_registers,
 121           ptrace_$floating_set_m68k);
 122
 123   ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid),
 124           (PTRACE_ARG3_TYPE) & inferior_control_registers,
 125           ptrace_$control_set_m68k,
 126           (PTRACE_ARG3_TYPE) & inferior_control_registers,
 127           ptrace_$control_set_m68k);
 128 }