/* Everything about breakpoints, for GDB.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Free Software Foundation, Inc.
This file is part of GDB.
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. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include <ctype.h>
#include "gdbcore.h"
#include "gdbcmd.h"
#include "value.h"
-#include "ctype.h"
#include "command.h"
#include "inferior.h"
#include "thread.h"
#include "target.h"
#include "language.h"
-#include <string.h>
+#include "gdb_string.h"
#include "demangle.h"
#include "annotate.h"
static void
disable_command PARAMS ((char *, int));
-static void
-disable_breakpoint PARAMS ((struct breakpoint *));
-
static void
enable_command PARAMS ((char *, int));
-static void
-enable_breakpoint PARAMS ((struct breakpoint *));
-
static void
map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *)));
b? (tmp=b->next, 1): 0; \
b = tmp)
-/* By default no support for hardware watchpoints is assumed. */
-#ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT
-#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0
-#define target_remove_watchpoint(ADDR,LEN,TYPE) -1
-#define target_insert_watchpoint(ADDR,LEN,TYPE) -1
-#endif
-
-#ifndef target_insert_hw_breakpoint
-#define target_remove_hw_breakpoint(ADDR,SHADOW) -1
-#define target_insert_hw_breakpoint(ADDR,SHADOW) -1
-#endif
-
-#ifndef target_stopped_data_address
-#define target_stopped_data_address() 0
-#endif
-
/* True if breakpoint hit counts should be displayed in breakpoint info. */
int show_breakpoint_hit_counts = 1;
/* Chain of all breakpoints defined. */
-static struct breakpoint *breakpoint_chain;
+struct breakpoint *breakpoint_chain;
/* Number of last breakpoint made. */
}
/* Failure to remove any of the hardware watchpoints comes here. */
if (b->inserted)
- error ("Hardware watchpoint %d: Could not remove watchpoint\n",
- b->number);
+ warning ("Hardware watchpoint %d: Could not remove watchpoint\n",
+ b->number);
/* Free the saved value chain. We will construct a new one
the next time the watchpoint is inserted. */
{
bpstat bs;
struct cleanup *old_chain;
+ struct command_line *cmd;
executing_breakpoint_commands = 1;
old_chain = make_cleanup (cleanup_executing_breakpoints, 0);
breakpoint_proceeded = 0;
for (; bs != NULL; bs = bs->next)
{
- while (bs->commands)
+ cmd = bs->commands;
+ while (cmd != NULL)
{
- char *line = bs->commands->line;
- bs->commands = bs->commands->next;
- execute_command (line, 0);
- /* If the inferior is proceeded by the command, bomb out now.
- The bpstat chain has been blown away by wait_for_inferior.
- But since execution has stopped again, there is a new bpstat
- to look at, so start over. */
- if (breakpoint_proceeded)
- goto top;
+ execute_control_command (cmd);
+ cmd = cmd->next;
}
+ if (breakpoint_proceeded)
+ /* The inferior is proceeded by the command; bomb out now.
+ The bpstat chain has been blown away by wait_for_inferior.
+ But since execution has stopped again, there is a new bpstat
+ to look at, so start over. */
+ goto top;
+ else
+ bs->commands = NULL;
}
executing_breakpoint_commands = 0;
/* The value has not changed. */
#define WP_VALUE_NOT_CHANGED 3
+#define BP_TEMPFLAG 1
+#define BP_HARDWAREFLAG 2
+
/* Check watchpoint condition. */
static int
{
bpstat bs = (bpstat) p;
struct breakpoint *b;
- struct frame_info *saved_frame, *fr;
- int within_current_scope, saved_level;
+ struct frame_info *fr;
+ int within_current_scope;
b = bs->breakpoint_at;
int real_breakpoint = 0;
#endif
/* Root of the chain of bpstat's */
- struct bpstat root_bs[1];
+ struct bpstats root_bs[1];
/* Pointer to the last thing in the chain currently. */
bpstat bs = root_bs;
static char message1[] =
&& b->address != bp_addr)
continue;
-#ifndef DECR_PC_AFTER_HW_BREAK
-#define DECR_PC_AFTER_HW_BREAK 0
-#endif
if (b->type == bp_hardware_breakpoint
&& b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK))
continue;
/* We hit the through_sigtramp breakpoint. */
through_sig,
+ /* We hit the shared library event breakpoint. */
+ shlib_event,
+
/* This is just used to count how many enums there are. */
class_last
};
/* Here is the table which drives this routine. So that we can
format it pretty, we define some abbreviations for the
enum bpstat_what codes. */
-#define keep_c BPSTAT_WHAT_KEEP_CHECKING
-#define stop_s BPSTAT_WHAT_STOP_SILENT
-#define stop_n BPSTAT_WHAT_STOP_NOISY
-#define single BPSTAT_WHAT_SINGLE
-#define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME
-#define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
-#define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
+#define kc BPSTAT_WHAT_KEEP_CHECKING
+#define ss BPSTAT_WHAT_STOP_SILENT
+#define sn BPSTAT_WHAT_STOP_NOISY
+#define sgl BPSTAT_WHAT_SINGLE
+#define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
+#define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
+#define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
#define sr BPSTAT_WHAT_STEP_RESUME
#define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
+#define shl BPSTAT_WHAT_CHECK_SHLIBS
/* "Can't happen." Might want to print an error message.
abort() is not out of the question, but chances are GDB is just
table[(int)class_last][(int)BPSTAT_WHAT_LAST] =
{
/* old action */
- /* keep_c stop_s stop_n single setlr clrlr clrlrs sr ts
+ /* kc ss sn sgl slr clr clrs sr ts shl
*/
-/*no_effect*/ {keep_c,stop_s,stop_n,single, setlr , clrlr , clrlrs, sr, ts},
-/*wp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts},
-/*wp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts},
-/*bp_nostop*/ {single,stop_s,stop_n,single, setlr , clrlrs, clrlrs, sr, ts},
-/*bp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts},
-/*bp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts},
-/*long_jump*/ {setlr ,stop_s,stop_n,setlr , err , err , err , sr, ts},
-/*long_resume*/ {clrlr ,stop_s,stop_n,clrlrs, err , err , err , sr, ts},
-/*step_resume*/ {sr ,sr ,sr ,sr , sr , sr , sr , sr, ts},
-/*through_sig*/ {ts ,ts ,ts ,ts , ts , ts , ts , ts, ts}
+/*no_effect*/ {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl},
+/*wp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl},
+/*wp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl},
+/*bp_nostop*/ {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl},
+/*bp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl},
+/*bp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl},
+/*long_jump*/ {slr, ss, sn, slr, err, err, err, sr, ts, shl},
+/*long_resume*/ {clr, ss, sn, clrs, err, err, err, sr, ts, shl},
+/*step_resume*/ {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl},
+/*through_sig*/ {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl},
+/*shlib*/ {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl}
};
-#undef keep_c
-#undef stop_s
-#undef stop_n
-#undef single
-#undef setlr
-#undef clrlr
-#undef clrlrs
+#undef kc
+#undef ss
+#undef sn
+#undef sgl
+#undef slr
+#undef clr
+#undef clrs
#undef err
#undef sr
#undef ts
+#undef shl
enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING;
struct bpstat_what retval;
case bp_watchpoint_scope:
bs_class = bp_nostop;
break;
-
+ case bp_shlib_event:
+ bs_class = shlib_event;
+ break;
case bp_call_dummy:
/* Make sure the action is stop (silent or noisy), so infrun.c
pops the dummy frame. */
"hw watchpoint", "read watchpoint",
"acc watchpoint", "longjmp",
"longjmp resume", "step resume",
- "watchpoint scope", "call dummy" };
+ "sigtramp",
+ "watchpoint scope", "call dummy",
+ "shlib events" };
static char *bpdisps[] = {"del", "dis", "keep"};
static char bpenables[] = "ny";
char wrap_indent[80];
case bp_through_sigtramp:
case bp_watchpoint_scope:
case bp_call_dummy:
+ case bp_shlib_event:
if (addressprint)
{
annotate_field (4);
while (l)
{
- fputs_filtered ("\t", gdb_stdout);
- fputs_filtered (l->line, gdb_stdout);
- fputs_filtered ("\n", gdb_stdout);
+ print_command_line (l, 4);
l = l->next;
}
}
return b;
}
+static int internal_breakpoint_number = -1;
+
static void
-create_longjmp_breakpoint(func_name)
+create_longjmp_breakpoint (func_name)
char *func_name;
{
struct symtab_and_line sal;
struct breakpoint *b;
- static int internal_breakpoint_number = -1;
if (func_name != NULL)
{
struct minimal_symbol *m;
- m = lookup_minimal_symbol(func_name, (struct objfile *)NULL);
+ m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL);
if (m)
sal.pc = SYMBOL_VALUE_ADDRESS (m);
else
sal.symtab = NULL;
sal.line = 0;
- b = set_raw_breakpoint(sal);
+ b = set_raw_breakpoint (sal);
if (!b) return;
b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume;
}
}
+#ifdef SOLIB_ADD
+void
+remove_solib_event_breakpoints ()
+{
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ if (b->type == bp_shlib_event)
+ delete_breakpoint (b);
+}
+
+void
+create_solib_event_breakpoint (address)
+ CORE_ADDR address;
+{
+ struct breakpoint *b;
+ struct symtab_and_line sal;
+
+ sal.pc = address;
+ sal.symtab = NULL;
+ sal.line = 0;
+ b = set_raw_breakpoint (sal);
+ b->number = internal_breakpoint_number--;
+ b->disposition = donttouch;
+ b->type = bp_shlib_event;
+}
+#endif
+
int
hw_breakpoint_used_count()
{
b->enable = enabled;
b->disposition = donttouch;
b->frame = (frame ? frame->frame : 0);
+
+ /* If we're debugging a multi-threaded program, then we
+ want momentary breakpoints to be active in only a
+ single thread of control. */
+ if (in_thread_list (inferior_pid))
+ b->thread = pid_to_thread_id (inferior_pid);
+
return b;
}
int i;
int thread;
- hardwareflag = flag & 2;
- tempflag = flag & 1;
+ hardwareflag = flag & BP_HARDWAREFLAG;
+ tempflag = flag & BP_TEMPFLAG;
sals.sals = NULL;
sals.nelts = 0;
b->cond_string = savestring (cond_start, cond_end - cond_start);
b->enable = enabled;
- b->disposition = tempflag ? delete : donttouch;
+ b->disposition = tempflag ? del : donttouch;
mention (b);
}
}
}
-#define BP_TEMPFLAG 1
-#define BP_HARDWAREFLAG 2
void
break_command (arg, from_tty)
char *arg;
scope_breakpoint->enable = enabled;
/* Automatically delete the breakpoint when it hits. */
- scope_breakpoint->disposition = delete;
+ scope_breakpoint->disposition = del;
/* Only break in the proper frame (help with recursion). */
scope_breakpoint->frame = prev_frame->frame;
b->type = bp_breakpoint;
b->cond = cond;
b->enable = enabled;
- b->disposition = tempflag ? delete : donttouch;
+ b->disposition = tempflag ? del : donttouch;
mention (b);
}
free ((PTR)sals.sals);
}
+/* Used by the gui, could be made a worker for other things. */
+
+struct breakpoint *
+set_breakpoint_sal (sal)
+struct symtab_and_line sal;
+{
+ struct breakpoint *b;
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->type = bp_breakpoint;
+ b->cond = 0;
+ b->thread = -1;
+ return b;
+}
+
#if 0
/* These aren't used; I don't know what they were for. */
/* Disable breakpoints on all catch clauses described in ARGS. */
bpstat bs;
{
for (; bs; bs = bs->next)
- if (bs->breakpoint_at && bs->breakpoint_at->disposition == delete
+ if (bs->breakpoint_at && bs->breakpoint_at->disposition == del
&& bs->stop)
delete_breakpoint (bs->breakpoint_at);
}
{
/* Ask user only if there are some breakpoints to delete. */
if (!from_tty
- || (breakpoint_chain && query ("Delete all breakpoints? ", 0, 0)))
+ || (breakpoint_chain && query ("Delete all breakpoints? ")))
{
/* No arg; clear all breakpoints. */
while (breakpoint_chain)
case bp_call_dummy:
delete_breakpoint (b);
break;
+
+ /* This breakpoint is special, it's set up when the inferior
+ starts and we really don't want to touch it. */
+ case bp_shlib_event:
+ break;
}
return 0;
set_language (save_language);
input_radix = save_input_radix;
- create_longjmp_breakpoint("longjmp");
- create_longjmp_breakpoint("_longjmp");
- create_longjmp_breakpoint("siglongjmp");
- create_longjmp_breakpoint(NULL);
+#ifdef GET_LONGJMP_TARGET
+ create_longjmp_breakpoint ("longjmp");
+ create_longjmp_breakpoint ("_longjmp");
+ create_longjmp_breakpoint ("siglongjmp");
+ create_longjmp_breakpoint (NULL);
+#endif
#if 0
- /* Took this out (temporaliy at least), since it produces an extra
+ /* Took this out (temporarily at least), since it produces an extra
blank line at startup. This messes up the gdbtests. -PB */
/* Blank line to finish off all those mention() messages we just printed. */
printf_filtered ("\n");
}
}
-static void
+void
enable_breakpoint (bpt)
struct breakpoint *bpt;
{
int target_resources_ok, other_type_used;
struct value *mark;
- if (enable_breakpoint_hook)
- enable_breakpoint_hook (bpt);
-
if (bpt->type == bp_hardware_breakpoint)
{
int i;
select_frame (save_selected_frame, save_selected_frame_level);
value_free_to_mark (mark);
}
+
+ if (modify_breakpoint_hook)
+ modify_breakpoint_hook (bpt);
}
/* ARGSUSED */
map_breakpoint_numbers (args, enable_breakpoint);
}
-static void
+void
disable_breakpoint (bpt)
struct breakpoint *bpt;
{
if (bpt->type == bp_watchpoint_scope)
return;
- if (disable_breakpoint_hook)
- disable_breakpoint_hook (bpt);
-
bpt->enable = disabled;
check_duplicates (bpt->address);
+
+ if (modify_breakpoint_hook)
+ modify_breakpoint_hook (bpt);
}
/* ARGSUSED */
struct breakpoint *bpt;
{
bpt->enable = enabled;
- bpt->disposition = delete;
+ bpt->disposition = del;
check_duplicates (bpt->address);
breakpoints_changed ();
"Synonym for ``info breakpoints''.");
}
-
-/* OK, when we call objfile_relocate, we need to relocate breakpoints
- too. breakpoint_re_set is not a good choice--for example, if
- addr_string contains just a line number without a file name the
- breakpoint might get set in a different file. In general, there is
- no need to go all the way back to the user's string (though this might
- work if some effort were made to canonicalize it), since symtabs and
- everything except addresses are still valid.
-
- Probably the best way to solve this is to have each breakpoint save
- the objfile and the section number that was used to set it (if set
- by "*addr", probably it is best to use find_pc_line to get a symtab
- and use the objfile and block_line_section for that symtab). Then
- objfile_relocate can call fixup_breakpoints with the objfile and
- the new_offsets, and it can relocate only the appropriate breakpoints. */
-
-#ifdef IBM6000_TARGET
-/* But for now, just kludge it based on the concept that before an
- objfile is relocated the breakpoint is below 0x10000000, and afterwards
- it is higher, so that way we only relocate each breakpoint once. */
-
-void
-fixup_breakpoints (low, high, delta)
- CORE_ADDR low;
- CORE_ADDR high;
- CORE_ADDR delta;
-{
- struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- {
- if (b->address >= low && b->address <= high)
- b->address += delta;
- }
-}
-#endif
projects / deliverable / binutils-gdb.git / blobdiff