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- /* Variables that describe the inferior process running under GDB:
- Where it is, why it stopped, and how to step it.
- Copyright (C) 1986, 1989 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* For bpstat. */
- #include "breakpoint.h"
-
- /* For FRAME_ADDR. */
- #include "frame.h"
-
- /*
- * Structure in which to save the status of the inferior. Save
- * through "save_inferior_status", restore through
- * "restore_inferior_status".
- * This pair of routines should be called around any transfer of
- * control to the inferior which you don't want showing up in your
- * control variables.
- */
- struct inferior_status {
- int pc_changed;
- int stop_signal;
- int stop_pc;
- FRAME_ADDR stop_frame_address;
- bpstat stop_bpstat;
- int stop_step;
- int stop_stack_dummy;
- int stopped_by_random_signal;
- int trap_expected;
- CORE_ADDR step_range_start;
- CORE_ADDR step_range_end;
- FRAME_ADDR step_frame_address;
- int step_over_calls;
- CORE_ADDR step_resume_break_address;
- int stop_after_trap;
- int stop_soon_quietly;
- FRAME_ADDR selected_frame_address;
- int selected_level;
- char stop_registers[REGISTER_BYTES];
- int breakpoint_proceeded;
- int restore_stack_info;
- int proceed_to_finish;
- };
-
- void save_inferior_status (), restore_inferior_status ();
-
- /* File name for default use for standard in/out in the inferior. */
-
- extern char *inferior_io_terminal;
-
- /* Pid of our debugged inferior, or 0 if no inferior now. */
-
- extern int inferior_pid;
-
- /* Character array containing an image of the inferior programs' registers. */
-
- extern char registers[];
-
- extern void clear_proceed_status ();
- extern void start_inferior ();
- extern void proceed ();
- extern void kill_inferior ();
- extern void kill_inferior_fast ();
- extern void generic_mourn_inferior ();
- extern void terminal_ours ();
- extern void detach ();
- extern void run_stack_dummy ();
- extern CORE_ADDR read_pc ();
- extern void write_pc ();
- extern void wait_for_inferior ();
- extern void init_wait_for_inferior ();
- extern void close_exec_file ();
- extern void reopen_exec_file ();
-
- /* From infcmd.c */
- void attach_command (
- #ifdef __STDC__
- char *arg, int from_tty
- #endif
- );
-
- /* Last signal that the inferior received (why it stopped). */
-
- extern int stop_signal;
-
- /* Address at which inferior stopped. */
-
- extern CORE_ADDR stop_pc;
-
- /* Stack frame when program stopped. */
-
- extern FRAME_ADDR stop_frame_address;
-
- /* Chain containing status of breakpoint(s) that we have stopped at. */
-
- extern bpstat stop_bpstat;
-
- /* Flag indicating that a command has proceeded the inferior past the
- current breakpoint. */
-
- extern int breakpoint_proceeded;
-
- /* Nonzero if stopped due to a step command. */
-
- extern int stop_step;
-
- /* Nonzero if stopped due to completion of a stack dummy routine. */
-
- extern int stop_stack_dummy;
-
- /* Nonzero if program stopped due to a random (unexpected) signal in
- inferior process. */
-
- extern int stopped_by_random_signal;
-
- /* Range to single step within.
- If this is nonzero, respond to a single-step signal
- by continuing to step if the pc is in this range. */
-
- extern CORE_ADDR step_range_start; /* Inclusive */
- extern CORE_ADDR step_range_end; /* Exclusive */
-
- /* Stack frame address as of when stepping command was issued.
- This is how we know when we step into a subroutine call,
- and how to set the frame for the breakpoint used to step out. */
-
- extern FRAME_ADDR step_frame_address;
-
- /* 1 means step over all subroutine calls.
- -1 means step over calls to undebuggable functions. */
-
- extern int step_over_calls;
-
- /* If stepping, nonzero means step count is > 1
- so don't print frame next time inferior stops
- if it stops due to stepping. */
-
- extern int step_multi;
-
- /* Nonzero means expecting a trap and caller will handle it themselves.
- It is used after attach, due to attaching to a process;
- when running in the shell before the child program has been exec'd;
- and when running some kinds of remote stuff (FIXME?). */
-
- int stop_soon_quietly;
-
- /* Nonzero if proceed is being used for a "finish" command or a similar
- situation when stop_registers should be saved. */
-
- extern int proceed_to_finish;
-
- /* Save register contents here when about to pop a stack dummy frame,
- if-and-only-if proceed_to_finish is set.
- Thus this contains the return value from the called function (assuming
- values are returned in a register). */
-
- extern char stop_registers[REGISTER_BYTES];
-
- /* Nonzero if pc has been changed by the debugger
- since the inferior stopped. */
-
- extern int pc_changed;
-
- /* Nonzero if the child process in inferior_pid was attached rather
- than forked. */
-
- int attach_flag;
-
- /* Possible values for CALL_DUMMY_LOCATION. */
- #define ON_STACK 1
- #define BEFORE_TEXT_END 2
- #define AFTER_TEXT_END 3
-
- #if !defined (CALL_DUMMY_LOCATION)
- #define CALL_DUMMY_LOCATION ON_STACK
- #endif /* No CALL_DUMMY_LOCATION. */
-
- /* Are we in a call dummy? The code below which allows DECR_PC_AFTER_BREAK
- below is for infrun.c, which may give the macro a pc without that
- subtracted out. */
- #if !defined (PC_IN_CALL_DUMMY)
- #if CALL_DUMMY_LOCATION == BEFORE_TEXT_END
- extern CORE_ADDR text_end;
- #define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
- ((pc) >= text_end - CALL_DUMMY_LENGTH \
- && (pc) < text_end + DECR_PC_AFTER_BREAK)
- #else /* Not before text_end. */
- #if CALL_DUMMY_LOCATION == AFTER_TEXT_END
- extern CORE_ADDR text_end;
- #define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
- ((pc) >= text_end \
- && (pc) < text_end + CALL_DUMMY_LENGTH + DECR_PC_AFTER_BREAK)
- #else /* On stack. */
- #define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
- ((sp) INNER_THAN (pc) && (pc) INNER_THAN (frame_address))
- #endif /* On stack. */
- #endif /* Not before text_end. */
- #endif /* No PC_IN_CALL_DUMMY. */
-