gdb/inferior.h

   1 /* Variables that describe the inferior process running under GDB:
   2    Where it is, why it stopped, and how to step it.
   3    Copyright (C) 1986, 1989 Free Software Foundation, Inc.
   4
   5 This file is part of GDB.
   6
   7 GDB 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 1, or (at your option)
  10 any later version.
  11
  12 GDB 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 GDB; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 /*
  22  * Structure in which to save the status of the inferior.  Save
  23  * through "save_inferior_status", restore through
  24  * "restore_inferior_status".
  25  * This pair of routines should be called around any transfer of
  26  * control to the inferior which you don't want showing up in your
  27  * control variables.
  28  */
  29 struct inferior_status {
  30   int pc_changed;
  31   int stop_signal;
  32   int stop_pc;
  33   int stop_frame_address;
  34   int stop_breakpoint;
  35   int stop_step;
  36   int stop_stack_dummy;
  37   int stopped_by_random_signal;
  38   int trap_expected;
  39   CORE_ADDR step_range_start;
  40   CORE_ADDR step_range_end;
  41   FRAME_ADDR step_frame_address;
  42   int step_over_calls;
  43   CORE_ADDR step_resume_break_address;
  44   int stop_after_trap;
  45   int stop_after_attach;
  46   FRAME_ADDR selected_frame_address;
  47   int selected_level;
  48   struct command_line *breakpoint_commands;
  49   char stop_registers[REGISTER_BYTES];
  50   int restore_stack_info;
  51 };
  52
  53 void save_inferior_status (), restore_inferior_status ();
  54
  55 /* File name for default use for standard in/out in the inferior.  */
  56
  57 extern char *inferior_io_terminal;
  58
  59 /* Pid of our debugged inferior, or 0 if no inferior now.  */
  60
  61 extern int inferior_pid;
  62
  63 /* Nonzero if debugging a remote machine via a serial link or ethernet.  */
  64 extern int remote_debugging;
  65
  66 /* Routines for use in remote debugging.  Documented in remote.c.  */
  67 int remote_read_inferior_memory ();
  68 int remote_write_inferior_memory ();
  69
  70 /* Last signal that the inferior received (why it stopped).  */
  71
  72 extern int stop_signal;
  73
  74 /* Address at which inferior stopped.  */
  75
  76 extern CORE_ADDR stop_pc;
  77
  78 /* Stack frame when program stopped.  */
  79
  80 extern FRAME_ADDR stop_frame_address;
  81
  82 /* Number of breakpoint it stopped at, or 0 if none.  */
  83
  84 extern int stop_breakpoint;
  85
  86 /* Nonzero if stopped due to a step command.  */
  87
  88 extern int stop_step;
  89
  90 /* Nonzero if stopped due to completion of a stack dummy routine.  */
  91
  92 extern int stop_stack_dummy;
  93
  94 /* Nonzero if program stopped due to a random (unexpected) signal in
  95    inferior process.  */
  96
  97 extern int stopped_by_random_signal;
  98
  99 /* Range to single step within.
 100    If this is nonzero, respond to a single-step signal
 101    by continuing to step if the pc is in this range.  */
 102
 103 extern CORE_ADDR step_range_start; /* Inclusive */
 104 extern CORE_ADDR step_range_end; /* Exclusive */
 105
 106 /* Stack frame address as of when stepping command was issued.
 107    This is how we know when we step into a subroutine call,
 108    and how to set the frame for the breakpoint used to step out.  */
 109
 110 extern FRAME_ADDR step_frame_address;
 111
 112 /* 1 means step over all subroutine calls.
 113    -1 means step over calls to undebuggable functions.  */
 114
 115 extern int step_over_calls;
 116
 117 /* If stepping, nonzero means step count is > 1
 118    so don't print frame next time inferior stops
 119    if it stops due to stepping.  */
 120
 121 extern int step_multi;
 122
 123 /* Save register contents here when about to pop a stack dummy frame.  */
 124
 125 extern char stop_registers[REGISTER_BYTES];
 126
 127 /* Nonzero if pc has been changed by the debugger
 128    since the inferior stopped.  */
 129
 130 extern int pc_changed;
 131
 132 long read_memory_integer ();