-/* Copyright (C) 1990 Free Software Foundation, Inc.
+/* Copyright (C) 1992 Free Software Foundation, Inc.
This file is part of GDB.
-GDB is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-GDB is distributed in the hope that it will be useful,
+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 GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#if !defined (BREAKPOINT_H)
#define BREAKPOINT_H 1
+#include "frame.h"
+#include "value.h"
+
/* This is the maximum number of bytes a breakpoint instruction can take.
Feel free to increase it. It's just used in a few places to size
arrays that should be independent of the target architecture. */
#define BREAKPOINT_MAX 10
-extern void breakpoint_re_set ();
-extern void clear_momentary_breakpoints ();
-extern void set_momentary_breakpoint ();
-extern void set_ignore_count ();
-extern void set_default_breakpoint ();
+typedef struct bpstat__struct *bpstat;
+
+#ifdef __STDC__ /* Forward declarations for prototypes */
+struct frame_info;
+#endif
+
+extern int
+breakpoint_here_p PARAMS ((CORE_ADDR));
+
+extern void
+until_break_command PARAMS ((char *, int));
+
+extern void
+breakpoint_re_set PARAMS ((void));
+
+extern void
+clear_momentary_breakpoints PARAMS ((void));
+
+/* FIXME: Prototype uses equivalence of "struct frame_info *" and FRAME */
+extern struct breakpoint *
+set_momentary_breakpoint PARAMS ((struct symtab_and_line,
+ struct frame_info *,
+ enum bptype));
+
+extern void
+set_ignore_count PARAMS ((int, int, int));
+
+extern void
+set_default_breakpoint PARAMS ((int, CORE_ADDR, struct symtab *, int));
-extern void mark_breakpoints_out ();
-extern void breakpoint_auto_delete ();
-extern void breakpoint_clear_ignore_counts ();
+extern void
+mark_breakpoints_out PARAMS ((void));
+
+extern void
+delete_breakpoint PARAMS ((struct breakpoint *));
+
+extern void
+breakpoint_auto_delete PARAMS ((bpstat));
+
+extern void
+breakpoint_clear_ignore_counts PARAMS ((void));
+
+extern void
+break_command PARAMS ((char *, int));
+
+extern int
+insert_breakpoints PARAMS ((void));
+
+extern int
+remove_breakpoints PARAMS ((void));
/* The following are for displays, which aren't really breakpoints, but
here is as good a place as any for them. */
-extern void disable_current_display ();
-extern void do_displays ();
-extern void disable_display ();
-extern void clear_displays ();
+extern void
+disable_current_display PARAMS ((void));
+
+extern void
+do_displays PARAMS ((void));
+
+extern void
+disable_display PARAMS ((int));
+
+extern void
+clear_displays PARAMS ((void));
\f
/* The follow stuff is an abstract data type "bpstat" ("breakpoint status").
This provides the ability to determine whether we have stopped at a
breakpoint, and what we should do about it. */
-typedef struct bpstat__struct *bpstat;
-
/* Interface: */
-
/* Clear a bpstat so that it says we are not at any breakpoint.
Also free any storage that is part of a bpstat. */
-void bpstat_clear();
+extern void bpstat_clear PARAMS ((bpstat *));
/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
is part of the bpstat is copied as well. */
-bpstat bpstat_copy();
+extern bpstat bpstat_copy PARAMS ((bpstat));
/* Get a bpstat associated with having just stopped at address *PC
and frame address FRAME_ADDRESS. Update *PC to point at the
breakpoint (if we hit a breakpoint). */
-bpstat bpstat_stop_status (/* CORE_ADDR *pc; FRAME_ADDR frame_address */);
+/* FIXME: prototypes uses equivalence between FRAME_ADDR and CORE_ADDR */
+extern bpstat bpstat_stop_status PARAMS ((CORE_ADDR *, CORE_ADDR));
/* Nonzero if we should print the frame. */
#define bpstat_should_print(bs) ((bs) != NULL && (bs)->print)
/* Nonzero if we should stop. */
#define bpstat_stop(bs) ((bs) != NULL && (bs)->stop)
+/* Find the bpstat associated with a breakpoint. NULL otherwise. */
+bpstat bpstat_find_breakpoint(/* bpstat, breakpoint */);
+
/* Nonzero if we hit a momentary breakpoint. */
#define bpstat_momentary_breakpoint(bs) ((bs) != NULL && (bs)->momentary)
/* Nonzero if we should step constantly (e.g. watchpoints on machines
without hardware support). This isn't related to a specific bpstat,
just to things like whether watchpoints are set. */
-int bpstat_should_step (/* void */);
+extern int bpstat_should_step PARAMS ((void));
/* Print a message indicating what happened. Returns nonzero to
say that only the source line should be printed after this (zero
return means print the frame as well as the source line). */
-int bpstat_print (/* bpstat bs */);
+extern int bpstat_print PARAMS ((bpstat));
/* Return the breakpoint number of the first breakpoint we are stopped
at. *BSP upon return is a bpstat which points to the remaining
breakpoints stopped at (but which is not guaranteed to be good for
anything but further calls to bpstat_num).
Return 0 if passed a bpstat which does not indicate any breakpoints. */
-int bpstat_num (/* bpstat *bsp; */);
+extern int bpstat_num PARAMS ((bpstat *));
/* Perform actions associated with having stopped at *BSP. */
-void bpstat_do_actions (/* bpstat bs; */);
+extern void bpstat_do_actions PARAMS ((bpstat *));
/* Modify BS so that the actions will not be performed. */
-void bpstat_clear_actions (/* bpstat bs; */);
-
+extern void bpstat_clear_actions PARAMS ((bpstat));
/* Implementation: */
-#include "value.h"
struct bpstat__struct
{
/* Linked list because there can be two breakpoints at the
first bpstat in the chain. */
char momentary;
};
-#endif /* breakpoint.h not already included. */
+\f
+/* Type of breakpoint. */
+/* FIXME In the future, we should fold all other breakpoint-like things into
+ here. This includes:
+
+ 1) single-step (for machines where we have to simulate single stepping),
+ 2) step-resume (for 'next'ing over subroutine calls),
+ 3) call-dummy (the breakpoint at the end of a subroutine stub that gdb
+ uses to call functions in the target).
+*/
+
+enum bptype {
+ bp_breakpoint, /* Normal breakpoint */
+ bp_until, /* used by until command */
+ bp_finish, /* used by finish command */
+ bp_watchpoint, /* Watchpoint */
+ bp_longjmp, /* secret breakpoint to find longjmp() */
+ bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
+};
+
+/* States of enablement of breakpoint. */
+
+enum enable { disabled, enabled};
+
+/* Disposition of breakpoint. Ie: what to do after hitting it. */
+
+enum bpdisp {
+ delete, /* Delete it */
+ disable, /* Disable it */
+ donttouch, /* Leave it alone */
+};
+
+/* Note that the ->silent field is not currently used by any commands
+ (though the code is in there if it was to be, and set_raw_breakpoint
+ does set it to 0). I implemented it because I thought it would be
+ useful for a hack I had to put in; I'm going to leave it in because
+ I can see how there might be times when it would indeed be useful */
+
+/* This is for a breakpoint or a watchpoint. */
+
+struct breakpoint
+{
+ struct breakpoint *next;
+ /* Type of breakpoint. */
+ enum bptype type;
+ /* Zero means disabled; remember the info but don't break here. */
+ enum enable enable;
+ /* What to do with this breakpoint after we hit it. */
+ enum bpdisp disposition;
+ /* Number assigned to distinguish breakpoints. */
+ int number;
+ /* Address to break at, or NULL if not a breakpoint. */
+ CORE_ADDR address;
+ /* Line number of this address. Redundant. Only matters if address
+ is non-NULL. */
+ int line_number;
+ /* Symtab of file of this address. Redundant. Only matters if address
+ is non-NULL. */
+ struct symtab *symtab;
+ /* Non-zero means a silent breakpoint (don't print frame info
+ if we stop here). */
+ unsigned char silent;
+ /* Number of stops at this breakpoint that should
+ be continued automatically before really stopping. */
+ int ignore_count;
+ /* "Real" contents of byte where breakpoint has been inserted.
+ Valid only when breakpoints are in the program. Under the complete
+ control of the target insert_breakpoint and remove_breakpoint routines.
+ No other code should assume anything about the value(s) here. */
+ char shadow_contents[BREAKPOINT_MAX];
+ /* Nonzero if this breakpoint is now inserted. Only matters if address
+ is non-NULL. */
+ char inserted;
+ /* Nonzero if this is not the first breakpoint in the list
+ for the given address. Only matters if address is non-NULL. */
+ char duplicate;
+ /* Chain of command lines to execute when this breakpoint is hit. */
+ struct command_line *commands;
+ /* Stack depth (address of frame). If nonzero, break only if fp
+ equals this. */
+ FRAME_ADDR frame;
+ /* Conditional. Break only if this expression's value is nonzero. */
+ struct expression *cond;
+
+ /* String we used to set the breakpoint (malloc'd). Only matters if
+ address is non-NULL. */
+ char *addr_string;
+ /* String form of the breakpoint condition (malloc'd), or NULL if there
+ is no condition. */
+ char *cond_string;
+
+ /* The expression we are watching, or NULL if not a watchpoint. */
+ struct expression *exp;
+ /* The largest block within which it is valid, or NULL if it is
+ valid anywhere (e.g. consists just of global symbols). */
+ struct block *exp_valid_block;
+ /* Value of the watchpoint the last time we checked it. */
+ value val;
+};
+
+#endif /* !defined (BREAKPOINT_H) */
projects / deliverable / binutils-gdb.git / blobdiff