130 lines
4.7 KiB
C
130 lines
4.7 KiB
C
/* Copyright (C) 1990 Free Software Foundation, Inc.
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This file is part of GDB.
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GDB 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 1, or (at your option)
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any later version.
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GDB 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 GDB; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (BREAKPOINT_H)
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#define BREAKPOINT_H 1
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/* This is the maximum number of bytes a breakpoint instruction can take.
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Feel free to increase it. It's just used in a few places to size
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arrays that should be independent of the target architecture. */
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#define BREAKPOINT_MAX 10
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extern void breakpoint_re_set ();
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extern void clear_momentary_breakpoints ();
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extern void set_momentary_breakpoint ();
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extern void set_ignore_count ();
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extern void set_default_breakpoint ();
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extern void mark_breakpoints_out ();
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extern void breakpoint_auto_delete ();
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extern void breakpoint_clear_ignore_counts ();
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/* The following are for displays, which aren't really breakpoints, but
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here is as good a place as any for them. */
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extern void disable_current_display ();
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extern void do_displays ();
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extern void disable_display ();
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extern void clear_displays ();
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/* The follow stuff is an abstract data type "bpstat" ("breakpoint status").
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This provides the ability to determine whether we have stopped at a
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breakpoint, and what we should do about it. */
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typedef struct bpstat__struct *bpstat;
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/* Interface: */
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/* Clear a bpstat so that it says we are not at any breakpoint.
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Also free any storage that is part of a bpstat. */
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void bpstat_clear();
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/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
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is part of the bpstat is copied as well. */
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bpstat bpstat_copy();
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/* Get a bpstat associated with having just stopped at address *PC
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and frame address FRAME_ADDRESS. Update *PC to point at the
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breakpoint (if we hit a breakpoint). */
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bpstat bpstat_stop_status (/* CORE_ADDR *pc; FRAME_ADDR frame_address */);
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/* Nonzero if we should print the frame. */
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#define bpstat_should_print(bs) ((bs) != NULL && (bs)->print)
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/* Nonzero if we should stop. */
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#define bpstat_stop(bs) ((bs) != NULL && (bs)->stop)
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/* Nonzero if we hit a momentary breakpoint. */
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#define bpstat_momentary_breakpoint(bs) ((bs) != NULL && (bs)->momentary)
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/* Nonzero if a signal that we got in wait() was due to circumstances
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explained by the BS. */
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/* Currently that is true iff we have hit a breakpoint. */
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#define bpstat_explains_signal(bs) ((bs) != NULL)
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/* Nonzero if we should step constantly (e.g. watchpoints on machines
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without hardware support). This isn't related to a specific bpstat,
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just to things like whether watchpoints are set. */
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int bpstat_should_step (/* void */);
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/* Print a message indicating what happened. Returns nonzero to
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say that only the source line should be printed after this (zero
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return means print the frame as well as the source line). */
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int bpstat_print (/* bpstat bs */);
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/* Return the breakpoint number of the first breakpoint we are stopped
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at. *BSP upon return is a bpstat which points to the remaining
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breakpoints stopped at (but which is not guaranteed to be good for
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anything but further calls to bpstat_num).
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Return 0 if passed a bpstat which does not indicate any breakpoints. */
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int bpstat_num (/* bpstat *bsp; */);
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/* Perform actions associated with having stopped at *BSP. */
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void bpstat_do_actions (/* bpstat bs; */);
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/* Modify BS so that the actions will not be performed. */
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void bpstat_clear_actions (/* bpstat bs; */);
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/* Implementation: */
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#include "value.h"
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struct bpstat__struct
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{
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/* Linked list because there can be two breakpoints at the
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same place, and a bpstat reflects the fact that both have been hit. */
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bpstat next;
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/* Breakpoint that we are at. */
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struct breakpoint *breakpoint_at;
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/* Commands left to be done. */
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struct command_line *commands;
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/* Old value associated with a watchpoint. */
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value old_val;
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/* Nonzero if we should print the frame. Only significant for the first
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bpstat in the chain. */
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char print;
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/* Nonzero if we should stop. Only significant for the first bpstat in
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the chain. */
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char stop;
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/* Nonzero if we hit a momentary breakpoint. Only significant for the
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first bpstat in the chain. */
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char momentary;
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};
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#endif /* breakpoint.h not already included. */
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