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