* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
/* Copyright (C) 1992 Free Software Foundation, Inc.
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
This file is part of GDB.
|
|
|
|
|
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
1991-03-28 16:26:26 +00:00
|
|
|
|
it under the terms of the GNU General Public License as published by
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
|
|
|
(at your option) any later version.
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
This program is distributed in the hope that it will be useful,
|
1991-03-28 16:26:26 +00:00
|
|
|
|
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
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
along with this program; if not, write to the Free Software
|
|
|
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
#if !defined (BREAKPOINT_H)
|
|
|
|
|
#define BREAKPOINT_H 1
|
|
|
|
|
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
#include "frame.h"
|
|
|
|
|
#include "value.h"
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
/* 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
|
|
|
|
|
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
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));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
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));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* The following are for displays, which aren't really breakpoints, but
|
|
|
|
|
here is as good a place as any for them. */
|
|
|
|
|
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
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));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* 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. */
|
|
|
|
|
|
|
|
|
|
/* Interface: */
|
|
|
|
|
/* Clear a bpstat so that it says we are not at any breakpoint.
|
|
|
|
|
Also free any storage that is part of a bpstat. */
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
extern void bpstat_clear PARAMS ((bpstat *));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
|
|
|
|
|
is part of the bpstat is copied as well. */
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
extern bpstat bpstat_copy PARAMS ((bpstat));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* 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). */
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
/* FIXME: prototypes uses equivalence between FRAME_ADDR and CORE_ADDR */
|
|
|
|
|
extern bpstat bpstat_stop_status PARAMS ((CORE_ADDR *, CORE_ADDR));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* 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)
|
|
|
|
|
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
/* Find the bpstat associated with a breakpoint. NULL otherwise. */
|
|
|
|
|
bpstat bpstat_find_breakpoint(/* bpstat, breakpoint */);
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
/* Nonzero if we hit a momentary breakpoint. */
|
|
|
|
|
#define bpstat_momentary_breakpoint(bs) ((bs) != NULL && (bs)->momentary)
|
|
|
|
|
|
|
|
|
|
/* Nonzero if a signal that we got in wait() was due to circumstances
|
|
|
|
|
explained by the BS. */
|
|
|
|
|
/* Currently that is true iff we have hit a breakpoint. */
|
|
|
|
|
#define bpstat_explains_signal(bs) ((bs) != NULL)
|
|
|
|
|
|
|
|
|
|
/* 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. */
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
extern int bpstat_should_step PARAMS ((void));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* 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). */
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
extern int bpstat_print PARAMS ((bpstat));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* 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. */
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
extern int bpstat_num PARAMS ((bpstat *));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* Perform actions associated with having stopped at *BSP. */
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
extern void bpstat_do_actions PARAMS ((bpstat *));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* Modify BS so that the actions will not be performed. */
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
extern void bpstat_clear_actions PARAMS ((bpstat));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* Implementation: */
|
|
|
|
|
struct bpstat__struct
|
|
|
|
|
{
|
|
|
|
|
/* Linked list because there can be two breakpoints at the
|
|
|
|
|
same place, and a bpstat reflects the fact that both have been hit. */
|
|
|
|
|
bpstat next;
|
|
|
|
|
/* Breakpoint that we are at. */
|
|
|
|
|
struct breakpoint *breakpoint_at;
|
|
|
|
|
/* Commands left to be done. */
|
|
|
|
|
struct command_line *commands;
|
|
|
|
|
/* Old value associated with a watchpoint. */
|
|
|
|
|
value old_val;
|
|
|
|
|
/* Nonzero if we should print the frame. Only significant for the first
|
|
|
|
|
bpstat in the chain. */
|
|
|
|
|
char print;
|
|
|
|
|
/* Nonzero if we should stop. Only significant for the first bpstat in
|
|
|
|
|
the chain. */
|
|
|
|
|
char stop;
|
|
|
|
|
/* Nonzero if we hit a momentary breakpoint. Only significant for the
|
|
|
|
|
first bpstat in the chain. */
|
|
|
|
|
char momentary;
|
|
|
|
|
};
|
* infrun.c, infcmd.c, breakpoint.c, main.c, symfile.c,
breakpoint.h, tm-sun4os4.h, tm-sparc.h, sparc-tdep.c, tm-mips.h,
mips-tdep.h, tm-sun3.h, tm-68k.h, m68k-tdep.h: Add support for
stepping (and nexting) through longjmp(). Also, cleanup
breakpoint handling quite a bit by creating explicit breakpoint
types instead of using magic breakpoint numbers.
Makefile.in: Update version to 4.4.3
1992-02-22 09:06:58 +00:00
|
|
|
|
|
|
|
|
|
/* 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),
|
|
|
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2) step-resume (for 'next'ing over subroutine calls),
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3) call-dummy (the breakpoint at the end of a subroutine stub that gdb
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uses to call functions in the target).
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*/
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enum bptype {
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bp_breakpoint, /* Normal breakpoint */
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bp_until, /* used by until command */
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bp_finish, /* used by finish command */
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bp_watchpoint, /* Watchpoint */
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bp_longjmp, /* secret breakpoint to find longjmp() */
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bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
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};
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/* States of enablement of breakpoint. */
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enum enable { disabled, enabled};
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/* Disposition of breakpoint. Ie: what to do after hitting it. */
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enum bpdisp {
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delete, /* Delete it */
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disable, /* Disable it */
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donttouch, /* Leave it alone */
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};
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/* Note that the ->silent field is not currently used by any commands
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(though the code is in there if it was to be, and set_raw_breakpoint
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does set it to 0). I implemented it because I thought it would be
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useful for a hack I had to put in; I'm going to leave it in because
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I can see how there might be times when it would indeed be useful */
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/* This is for a breakpoint or a watchpoint. */
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struct breakpoint
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{
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struct breakpoint *next;
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/* Type of breakpoint. */
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enum bptype type;
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/* Zero means disabled; remember the info but don't break here. */
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enum enable enable;
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/* What to do with this breakpoint after we hit it. */
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enum bpdisp disposition;
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/* Number assigned to distinguish breakpoints. */
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int number;
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/* Address to break at, or NULL if not a breakpoint. */
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CORE_ADDR address;
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/* Line number of this address. Redundant. Only matters if address
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is non-NULL. */
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int line_number;
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/* Symtab of file of this address. Redundant. Only matters if address
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is non-NULL. */
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struct symtab *symtab;
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/* Non-zero means a silent breakpoint (don't print frame info
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if we stop here). */
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unsigned char silent;
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/* Number of stops at this breakpoint that should
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be continued automatically before really stopping. */
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int ignore_count;
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/* "Real" contents of byte where breakpoint has been inserted.
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Valid only when breakpoints are in the program. Under the complete
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control of the target insert_breakpoint and remove_breakpoint routines.
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No other code should assume anything about the value(s) here. */
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char shadow_contents[BREAKPOINT_MAX];
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/* Nonzero if this breakpoint is now inserted. Only matters if address
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is non-NULL. */
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char inserted;
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/* Nonzero if this is not the first breakpoint in the list
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for the given address. Only matters if address is non-NULL. */
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char duplicate;
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/* Chain of command lines to execute when this breakpoint is hit. */
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struct command_line *commands;
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/* Stack depth (address of frame). If nonzero, break only if fp
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equals this. */
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FRAME_ADDR frame;
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/* Conditional. Break only if this expression's value is nonzero. */
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struct expression *cond;
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/* String we used to set the breakpoint (malloc'd). Only matters if
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address is non-NULL. */
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char *addr_string;
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/* String form of the breakpoint condition (malloc'd), or NULL if there
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is no condition. */
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char *cond_string;
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/* The expression we are watching, or NULL if not a watchpoint. */
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|
struct expression *exp;
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/* The largest block within which it is valid, or NULL if it is
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valid anywhere (e.g. consists just of global symbols). */
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struct block *exp_valid_block;
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/* Value of the watchpoint the last time we checked it. */
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|
value val;
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};
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#endif /* !defined (BREAKPOINT_H) */
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