gdb/hppam3-nat.c

   1 /* Low level interface to HP800 running mach 4.0.
   2    Copyright (C) 1995 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 #include "floatformat.h"
  24
  25 #include <stdio.h>
  26
  27 #include <mach.h>
  28 #include <mach/message.h>
  29 #include <mach/exception.h>
  30 #include <mach_error.h>
  31
  32 #include <target.h>
  33
  34 /*
  35  * Fetch inferiors registers for gdb.
  36  * REGNO specifies which (as gdb views it) register, -1 for all.
  37  */
  38
  39 void
  40 fetch_inferior_registers (int regno)
  41 {
  42   kern_return_t ret;
  43   thread_state_data_t state;
  44   unsigned int stateCnt = TRACE_FLAVOR_SIZE;
  45   int index;
  46
  47   if (!MACH_PORT_VALID (current_thread))
  48     error ("fetch inferior registers: Invalid thread");
  49
  50   if (must_suspend_thread)
  51     setup_thread (current_thread, 1);
  52
  53   ret = thread_get_state (current_thread,
  54                           TRACE_FLAVOR,
  55                           state,
  56                           &stateCnt);
  57
  58   if (ret != KERN_SUCCESS)
  59     warning ("fetch_inferior_registers: %s ",
  60              mach_error_string (ret));
  61   else
  62     {
  63       for (index = 0; index < NUM_REGS; index++)
  64         supply_register (index, (void *) &state[index]);
  65     }
  66
  67   if (must_suspend_thread)
  68     setup_thread (current_thread, 0);
  69 }
  70 \f
  71 /* Store our register values back into the inferior.
  72  * If REGNO is -1, do this for all registers.
  73  * Otherwise, REGNO specifies which register
  74  *
  75  * On mach3 all registers are always saved in one call.
  76  */
  77 void
  78 store_inferior_registers (int regno)
  79 {
  80   kern_return_t ret;
  81   thread_state_data_t state;
  82   unsigned int stateCnt = TRACE_FLAVOR_SIZE;
  83   register int index;
  84
  85   if (!MACH_PORT_VALID (current_thread))
  86     error ("store inferior registers: Invalid thread");
  87
  88   if (must_suspend_thread)
  89     setup_thread (current_thread, 1);
  90
  91   /* Fetch the state of the current thread */
  92   ret = thread_get_state (current_thread,
  93                           TRACE_FLAVOR,
  94                           state,
  95                           &stateCnt);
  96
  97   if (ret != KERN_SUCCESS)
  98     {
  99       warning ("store_inferior_registers (get): %s",
 100                mach_error_string (ret));
 101       if (must_suspend_thread)
 102         setup_thread (current_thread, 0);
 103       return;
 104     }
 105
 106
 107   /* move gdb's registers to thread's state
 108
 109    * Since we save all registers anyway, save the ones
 110    * that gdb thinks are valid (e.g. ignore the regno
 111    * parameter)
 112    */
 113   if (regno > 0 && regno < NUM_REGS)
 114     {
 115       memcpy (&state[regno], &registers[REGISTER_BYTE (regno)],
 116               REGISTER_RAW_SIZE (regno));
 117     }
 118   else
 119     {
 120       for (index = 0; index < NUM_REGS; index++)
 121         memcpy (&state[index], &registers[REGISTER_BYTE (index)],
 122                 REGISTER_RAW_SIZE (index));
 123 /*      state[index] = registers[REGISTER_BYTE (index)]; */
 124
 125     }
 126
 127   /* Write gdb's current view of register to the thread
 128    */
 129   ret = thread_set_state (current_thread,
 130                           TRACE_FLAVOR,
 131                           state,
 132                           TRACE_FLAVOR_SIZE);
 133
 134   if (ret != KERN_SUCCESS)
 135     warning ("store_inferior_registers (set): %s",
 136              mach_error_string (ret));
 137
 138   if (must_suspend_thread)
 139     setup_thread (current_thread, 0);
 140 }