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 (regno)
  41      int regno;
  42 {
  43   kern_return_t ret;
  44   thread_state_data_t state;
  45   unsigned int stateCnt = TRACE_FLAVOR_SIZE;
  46   int index;
  47
  48   if (!MACH_PORT_VALID (current_thread))
  49     error ("fetch inferior registers: Invalid thread");
  50
  51   if (must_suspend_thread)
  52     setup_thread (current_thread, 1);
  53
  54   ret = thread_get_state (current_thread,
  55                           TRACE_FLAVOR,
  56                           state,
  57                           &stateCnt);
  58
  59   if (ret != KERN_SUCCESS)
  60     warning ("fetch_inferior_registers: %s ",
  61              mach_error_string (ret));
  62   else
  63     {
  64       for (index = 0; index < NUM_REGS; index++)
  65         supply_register (index, (void *) &state[index]);
  66     }
  67
  68   if (must_suspend_thread)
  69     setup_thread (current_thread, 0);
  70 }
  71 \f
  72 /* Store our register values back into the inferior.
  73  * If REGNO is -1, do this for all registers.
  74  * Otherwise, REGNO specifies which register
  75  *
  76  * On mach3 all registers are always saved in one call.
  77  */
  78 void
  79 store_inferior_registers (regno)
  80      int regno;
  81 {
  82   kern_return_t ret;
  83   thread_state_data_t state;
  84   unsigned int stateCnt = TRACE_FLAVOR_SIZE;
  85   register int index;
  86
  87   if (!MACH_PORT_VALID (current_thread))
  88     error ("store inferior registers: Invalid thread");
  89
  90   if (must_suspend_thread)
  91     setup_thread (current_thread, 1);
  92
  93   /* Fetch the state of the current thread */
  94   ret = thread_get_state (current_thread,
  95                           TRACE_FLAVOR,
  96                           state,
  97                           &stateCnt);
  98
  99   if (ret != KERN_SUCCESS)
 100     {
 101       warning ("store_inferior_registers (get): %s",
 102                mach_error_string (ret));
 103       if (must_suspend_thread)
 104         setup_thread (current_thread, 0);
 105       return;
 106     }
 107
 108
 109   /* move gdb's registers to thread's state
 110
 111    * Since we save all registers anyway, save the ones
 112    * that gdb thinks are valid (e.g. ignore the regno
 113    * parameter)
 114    */
 115   if (regno > 0 && regno < NUM_REGS)
 116     {
 117       memcpy (&state[regno], &registers[REGISTER_BYTE (regno)],
 118               REGISTER_RAW_SIZE (regno));
 119     }
 120   else
 121     {
 122       for (index = 0; index < NUM_REGS; index++)
 123         memcpy (&state[index], &registers[REGISTER_BYTE (index)],
 124                 REGISTER_RAW_SIZE (index));
 125 /*      state[index] = registers[REGISTER_BYTE (index)]; */
 126
 127     }
 128
 129   /* Write gdb's current view of register to the thread
 130    */
 131   ret = thread_set_state (current_thread,
 132                           TRACE_FLAVOR,
 133                           state,
 134                           TRACE_FLAVOR_SIZE);
 135
 136   if (ret != KERN_SUCCESS)
 137     warning ("store_inferior_registers (set): %s",
 138              mach_error_string (ret));
 139
 140   if (must_suspend_thread)
 141     setup_thread (current_thread, 0);
 142 }