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, Boston, MA 02111-1307, USA.  */
  19
  20 #include "defs.h"
  21 #include "inferior.h"
  22 #include "floatformat.h"
  23
  24 #include <stdio.h>
  25
  26 #include <mach.h>
  27 #include <mach/message.h>
  28 #include <mach/exception.h>
  29 #include <mach_error.h>
  30
  31 #include <target.h>
  32
  33 /*
  34  * Fetch inferiors registers for gdb.
  35  * REGNO specifies which (as gdb views it) register, -1 for all.
  36  */
  37
  38 void
  39 fetch_inferior_registers (regno)
  40      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 (regno)
  79      int regno;
  80 {
  81   kern_return_t ret;
  82   thread_state_data_t state;
  83   unsigned int stateCnt = TRACE_FLAVOR_SIZE;
  84   register int index;
  85
  86   if (! MACH_PORT_VALID (current_thread))
  87     error ("store inferior registers: Invalid thread");
  88
  89   if (must_suspend_thread)
  90     setup_thread (current_thread, 1);
  91
  92   /* Fetch the state of the current thread */
  93   ret = thread_get_state (current_thread,
  94                           TRACE_FLAVOR,
  95                           state,
  96                           &stateCnt);
  97
  98    if (ret != KERN_SUCCESS)
  99     {
 100       warning ("store_inferior_registers (get): %s",
 101                mach_error_string (ret));
 102       if (must_suspend_thread)
 103         setup_thread (current_thread, 0);
 104       return;
 105     }
 106
 107
 108   /* move gdb's registers to thread's state
 109    *
 110    * Since we save all registers anyway, save the ones
 111    * that gdb thinks are valid (e.g. ignore the regno
 112    * parameter)
 113    */
 114   if (regno > 0 && regno < NUM_REGS )
 115     {
 116       memcpy(&state[regno], &registers[REGISTER_BYTE (regno)],
 117              REGISTER_RAW_SIZE(regno));
 118     }
 119   else
 120     {
 121       for (index = 0; index < NUM_REGS; index++)
 122         memcpy(&state[index], &registers[REGISTER_BYTE (index)],
 123                REGISTER_RAW_SIZE(index));
 124 /*      state[index] = registers[REGISTER_BYTE (index)];*/
 125
 126     }
 127
 128   /* Write gdb's current view of register to the thread
 129    */
 130   ret = thread_set_state (current_thread,
 131                           TRACE_FLAVOR,
 132                           state,
 133                           TRACE_FLAVOR_SIZE);
 134
 135   if (ret != KERN_SUCCESS)
 136     warning ("store_inferior_registers (set): %s",
 137              mach_error_string (ret));
 138
 139   if (must_suspend_thread)
 140     setup_thread (current_thread, 0);
 141 }