gdb/hppam3-nat.c

   1 /* Low level interface to HP800 running mach 4.0.
   2    Copyright 1995, 2000, 2001 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 #include "regcache.h"
  25
  26 #include <stdio.h>
  27
  28 #include <mach.h>
  29 #include <mach/message.h>
  30 #include <mach/exception.h>
  31 #include <mach_error.h>
  32
  33 #include <target.h>
  34
  35 /*
  36  * Fetch inferiors registers for gdb.
  37  * REGNO specifies which (as gdb views it) register, -1 for all.
  38  */
  39
  40 void
  41 fetch_inferior_registers (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 (int regno)
  80 {
  81   kern_return_t ret;
  82   thread_state_data_t state;
  83   unsigned int stateCnt = TRACE_FLAVOR_SIZE;
  84   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], &deprecated_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], &deprecated_registers[REGISTER_BYTE (index)],
 123                 REGISTER_RAW_SIZE (index));
 124 /*      state[index] = deprecated_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 }