#include "symfile.h"
#include "objfiles.h"
-/* local function prototypes */
+/* Prototypes for local functions. */
static void
catch_command_1 PARAMS ((char *, int, int));
static void
ignore_command PARAMS ((char *, int));
-static int
-breakpoint_re_set_one PARAMS ((char *));
-
-void
-delete_command PARAMS ((char *, int));
+static int breakpoint_re_set_one PARAMS ((PTR));
static void
clear_command PARAMS ((char *, int));
static void
catch_command PARAMS ((char *, int));
+static void
+handle_gnu_4_16_catch_command PARAMS ((char *, int, int));
+
static struct symtabs_and_lines
get_catch_sals PARAMS ((int));
static int
can_use_hardware_watchpoint PARAMS ((struct value *));
-static void
+void
tbreak_command PARAMS ((char *, int));
static void
static bpstat
bpstat_alloc PARAMS ((struct breakpoint *, bpstat));
-static int
-breakpoint_cond_eval PARAMS ((char *));
+static int breakpoint_cond_eval PARAMS ((PTR));
static void
cleanup_executing_breakpoints PARAMS ((PTR));
void
set_breakpoint_count PARAMS ((int));
-static int
-remove_breakpoint PARAMS ((struct breakpoint *));
+#if 0
+static struct breakpoint *
+create_temp_exception_breakpoint PARAMS ((CORE_ADDR));
+#endif
-static int
-print_it_normal PARAMS ((bpstat));
+typedef enum {
+ mark_inserted,
+ mark_uninserted,
+} insertion_state_t;
static int
-watchpoint_check PARAMS ((char *));
+remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t));
-static int
-print_it_done PARAMS ((bpstat));
+static int print_it_normal PARAMS ((bpstat));
-static int
-print_it_noop PARAMS ((bpstat));
+typedef struct {
+ enum exception_event_kind kind;
+ int enable;
+} args_for_catchpoint_enable;
-static void
-maintenance_info_breakpoints PARAMS ((char *, int));
+static int watchpoint_check PARAMS ((PTR));
+
+static int cover_target_enable_exception_callback PARAMS ((PTR));
+
+static int print_it_done PARAMS ((bpstat));
+
+static int print_it_noop PARAMS ((bpstat));
+
+static void maintenance_info_breakpoints PARAMS ((char *, int));
#ifdef GET_LONGJMP_TARGET
-static void
-create_longjmp_breakpoint PARAMS ((char *));
+static void create_longjmp_breakpoint PARAMS ((char *));
#endif
-static int
-hw_breakpoint_used_count PARAMS ((void));
+static int hw_breakpoint_used_count PARAMS ((void));
-static int
-hw_watchpoint_used_count PARAMS ((enum bptype, int *));
+static int hw_watchpoint_used_count PARAMS ((enum bptype, int *));
-static void
-hbreak_command PARAMS ((char *, int));
+static void hbreak_command PARAMS ((char *, int));
-static void
-thbreak_command PARAMS ((char *, int));
+static void thbreak_command PARAMS ((char *, int));
-static void
-watch_command_1 PARAMS ((char *, int, int));
+static void watch_command_1 PARAMS ((char *, int, int));
-static void
-rwatch_command PARAMS ((char *, int));
+static void rwatch_command PARAMS ((char *, int));
+
+static void awatch_command PARAMS ((char *, int));
+
+static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp));
+
+/* Prototypes for exported functions. */
static void
awatch_command PARAMS ((char *, int));
static void
do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp));
+/* If FALSE, gdb will not use hardware support for watchpoints, even
+ if such is available. */
+static int can_use_hw_watchpoints;
+
+void delete_command PARAMS ((char *, int));
+
+void _initialize_breakpoint PARAMS ((void));
+
+void set_breakpoint_count PARAMS ((int));
+
extern int addressprint; /* Print machine addresses? */
#if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD)
int breakpoint_count;
+/* Pointer to current exception event record */
+static struct exception_event_record * current_exception_event;
+
+/* Indicator of whether exception catchpoints should be nuked
+ between runs of a program */
+int exception_catchpoints_are_fragile = 0;
+
+/* Indicator of when exception catchpoints set-up should be
+ reinitialized -- e.g. when program is re-run */
+int exception_support_initialized = 0;
+
+
/* Set breakpoint count to NUM. */
void
error ("No breakpoint number %d.", bnum);
}
\f
-extern int memory_breakpoint_size; /* from mem-break.c */
-
/* Like target_read_memory() but if breakpoints are inserted, return
the shadow contents instead of the breakpoints themselves.
{
int status;
struct breakpoint *b;
+ CORE_ADDR bp_addr = 0;
+ int bp_size = 0;
- if (memory_breakpoint_size < 0)
- /* No breakpoints on this machine. FIXME: This should be
- dependent on the debugging target. Probably want
- target_insert_breakpoint to return a size, saying how many
- bytes of the shadow contents are used, or perhaps have
- something like target_xfer_shadow. */
+ if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL)
+ /* No breakpoints on this machine. */
return target_read_memory (memaddr, myaddr, len);
ALL_BREAKPOINTS (b)
{
+ if (b->type == bp_none)
+ warning ("attempted to read through apparently deleted breakpoint #%d?\n", b->number);
+
+ /* memory breakpoint? */
if (b->type == bp_watchpoint
|| b->type == bp_hardware_watchpoint
|| b->type == bp_read_watchpoint
- || b->type == bp_access_watchpoint
- || !b->inserted)
+ || b->type == bp_access_watchpoint)
continue;
- else if (b->address + memory_breakpoint_size <= memaddr)
- /* The breakpoint is entirely before the chunk of memory
- we are reading. */
+ /* bp in memory? */
+ if (!b->inserted)
continue;
- else if (b->address >= memaddr + len)
- /* The breakpoint is entirely after the chunk of memory we
+ /* Addresses and length of the part of the breakpoint that
+ we need to copy. */
+ /* XXXX The m68k, sh and h8300 have different local and remote
+ breakpoint values. BREAKPOINT_FROM_PC still manages to
+ correctly determine the breakpoints memory address and size
+ for these targets. */
+ bp_addr = b->address;
+ bp_size = 0;
+ if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL)
+ continue;
+ if (bp_size == 0)
+ /* bp isn't valid */
+ continue;
+ if (bp_addr + bp_size <= memaddr)
+ /* The breakpoint is entirely before the chunk of memory we
are reading. */
continue;
- else
- {
- /* Copy the breakpoint from the shadow contents, and recurse
- for the things before and after. */
-
- /* Addresses and length of the part of the breakpoint that
- we need to copy. */
- CORE_ADDR membpt = b->address;
- unsigned int bptlen = memory_breakpoint_size;
- /* Offset within shadow_contents. */
- int bptoffset = 0;
+ if (bp_addr >= memaddr + len)
+ /* The breakpoint is entirely after the chunk of memory we are
+ reading. */
+ continue;
+ /* Copy the breakpoint from the shadow contents, and recurse for
+ the things before and after. */
+ {
+ /* Offset within shadow_contents. */
+ int bptoffset = 0;
- if (membpt < memaddr)
- {
- /* Only copy the second part of the breakpoint. */
- bptlen -= memaddr - membpt;
- bptoffset = memaddr - membpt;
- membpt = memaddr;
- }
-
- if (membpt + bptlen > memaddr + len)
- {
- /* Only copy the first part of the breakpoint. */
- bptlen -= (membpt + bptlen) - (memaddr + len);
- }
-
- memcpy (myaddr + membpt - memaddr,
- b->shadow_contents + bptoffset, bptlen);
-
- if (membpt > memaddr)
- {
- /* Copy the section of memory before the breakpoint. */
- status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr);
- if (status != 0)
- return status;
- }
-
- if (membpt + bptlen < memaddr + len)
- {
- /* Copy the section of memory after the breakpoint. */
- status = read_memory_nobpt
- (membpt + bptlen,
- myaddr + membpt + bptlen - memaddr,
- memaddr + len - (membpt + bptlen));
- if (status != 0)
- return status;
- }
- return 0;
- }
+ if (bp_addr < memaddr)
+ {
+ /* Only copy the second part of the breakpoint. */
+ bp_size -= memaddr - bp_addr;
+ bptoffset = memaddr - bp_addr;
+ bp_addr = memaddr;
+ }
+
+ if (bp_addr + bp_size > memaddr + len)
+ {
+ /* Only copy the first part of the breakpoint. */
+ bp_size -= (bp_addr + bp_size) - (memaddr + len);
+ }
+
+ memcpy (myaddr + bp_addr - memaddr,
+ b->shadow_contents + bptoffset, bp_size);
+
+ if (bp_addr > memaddr)
+ {
+ /* Copy the section of memory before the breakpoint. */
+ status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr);
+ if (status != 0)
+ return status;
+ }
+
+ if (bp_addr + bp_size < memaddr + len)
+ {
+ /* Copy the section of memory after the breakpoint. */
+ status = read_memory_nobpt
+ (bp_addr + bp_size,
+ myaddr + bp_addr + bp_size - memaddr,
+ memaddr + len - (bp_addr + bp_size));
+ if (status != 0)
+ return status;
+ }
+ return 0;
+ }
}
/* Nothing overlaps. Just call read_memory_noerr. */
return target_read_memory (memaddr, myaddr, len);
}
+
\f
/* insert_breakpoints is used when starting or continuing the program.
remove_breakpoints is used when the program stops.
int val = 0;
int disabled_breaks = 0;
+ static char message1[] = "Error inserting catchpoint %d:\n";
+ static char message[sizeof (message1) + 30];
+
+
ALL_BREAKPOINTS_SAFE (b, temp)
- if (b->type != bp_watchpoint
- && b->type != bp_hardware_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- && b->enable != disabled
- && b->enable != shlib_disabled
- && ! b->inserted
- && ! b->duplicate)
- {
- if (b->type == bp_hardware_breakpoint)
- val = target_insert_hw_breakpoint(b->address, b->shadow_contents);
- else
- {
- /* Check to see if breakpoint is in an overlay section;
- if so, we should set the breakpoint at the LMA address.
- Only if the section is currently mapped should we ALSO
- set a break at the VMA address. */
- if (overlay_debugging && b->section &&
- section_is_overlay (b->section))
- {
- CORE_ADDR addr;
-
- addr = overlay_unmapped_address (b->address, b->section);
- val = target_insert_breakpoint (addr, b->shadow_contents);
- /* This would be the time to check val, to see if the
- breakpoint write to the load address succeeded.
- However, this might be an ordinary occurrance, eg. if
- the unmapped overlay is in ROM. */
- val = 0; /* in case unmapped address failed */
- if (section_is_mapped (b->section))
- val = target_insert_breakpoint (b->address,
- b->shadow_contents);
- }
- else /* ordinary (non-overlay) address */
- val = target_insert_breakpoint(b->address, b->shadow_contents);
- }
- if (val)
- {
- /* Can't set the breakpoint. */
+ {
+ if (b->type != bp_watchpoint
+ && b->type != bp_hardware_watchpoint
+ && b->type != bp_read_watchpoint
+ && b->type != bp_access_watchpoint
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_throw
+ && b->type != bp_catch_catch
+ && b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && ! b->inserted
+ && ! b->duplicate)
+ {
+ if (b->type == bp_hardware_breakpoint)
+ val = target_insert_hw_breakpoint(b->address, b->shadow_contents);
+ else
+ {
+ /* Check to see if breakpoint is in an overlay section;
+ if so, we should set the breakpoint at the LMA address.
+ Only if the section is currently mapped should we ALSO
+ set a break at the VMA address. */
+ if (overlay_debugging && b->section &&
+ section_is_overlay (b->section))
+ {
+ CORE_ADDR addr;
+
+ addr = overlay_unmapped_address (b->address, b->section);
+ val = target_insert_breakpoint (addr, b->shadow_contents);
+ /* This would be the time to check val, to see if the
+ breakpoint write to the load address succeeded.
+ However, this might be an ordinary occurrance, eg. if
+ the unmapped overlay is in ROM. */
+ val = 0; /* in case unmapped address failed */
+ if (section_is_mapped (b->section))
+ val = target_insert_breakpoint (b->address,
+ b->shadow_contents);
+ }
+ else /* ordinary (non-overlay) address */
+ val = target_insert_breakpoint(b->address, b->shadow_contents);
+ }
+ if (val)
+ {
+ /* Can't set the breakpoint. */
#if defined (DISABLE_UNSETTABLE_BREAK)
- if (DISABLE_UNSETTABLE_BREAK (b->address))
+ if (DISABLE_UNSETTABLE_BREAK (b->address))
+ {
+ /* See also: disable_breakpoints_in_shlibs. */
+ val = 0;
+ b->enable = shlib_disabled;
+ if (!disabled_breaks)
+ {
+ target_terminal_ours_for_output ();
+ fprintf_unfiltered (gdb_stderr,
+ "Cannot insert breakpoint %d:\n", b->number);
+ printf_filtered ("Temporarily disabling shared library breakpoints:\n");
+ }
+ disabled_breaks = 1;
+ printf_filtered ("%d ", b->number);
+ }
+ else
+#endif
+ {
+ target_terminal_ours_for_output ();
+ fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
+#ifdef ONE_PROCESS_WRITETEXT
+ fprintf_unfiltered (gdb_stderr,
+ "The same program may be running in another process.\n");
+#endif
+ memory_error (val, b->address); /* which bombs us out */
+ }
+ }
+ else
+ b->inserted = 1;
+ }
+ else if (ep_is_exception_catchpoint (b)
+ && b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && ! b->inserted
+ && ! b->duplicate)
+
+ {
+ /* If we get here, we must have a callback mechanism for exception
+ events -- with g++ style embedded label support, we insert
+ ordinary breakpoints and not catchpoints. */
+ sprintf (message, message1, b->number); /* Format possible error message */
+
+ val = target_insert_breakpoint(b->address, b->shadow_contents);
+ if (val)
+ {
+ /* Couldn't set breakpoint for some reason */
+ target_terminal_ours_for_output ();
+ fprintf_unfiltered (gdb_stderr,
+ "Cannot insert catchpoint %d; disabling it\n", b->number);
+ b->enable = disabled;
+ }
+ else
+ {
+ /* Bp set, now make sure callbacks are enabled */
+ int val;
+ args_for_catchpoint_enable args;
+ args.kind = b->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW;
+ args.enable = 1;
+ val = catch_errors (cover_target_enable_exception_callback,
+ &args,
+ message, RETURN_MASK_ALL);
+ if (val != 0 && val != -1)
{
- val = 0;
- b->enable = shlib_disabled;
- if (!disabled_breaks)
- {
- target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr,
- "Cannot insert breakpoint %d:\n", b->number);
- printf_filtered ("Temporarily disabling shared library breakpoints:\n");
- }
- disabled_breaks = 1;
- printf_filtered ("%d ", b->number);
+ b->inserted = 1;
}
- else
-#endif
+ /* Check if something went wrong; val == 0 can be ignored */
+ if (val == -1)
{
+ /* something went wrong */
target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
-#ifdef ONE_PROCESS_WRITETEXT
- fprintf_unfiltered (gdb_stderr,
- "The same program may be running in another process.\n");
-#endif
- memory_error (val, b->address); /* which bombs us out */
+ fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d; disabling it\n", b->number);
+ b->enable = disabled;
}
- }
- else
- b->inserted = 1;
+ }
}
- else if ((b->type == bp_hardware_watchpoint ||
- b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->enable == enabled
- && ! b->inserted
- && ! b->duplicate)
- {
- struct frame_info *saved_frame;
- int saved_level, within_current_scope;
- value_ptr mark = value_mark ();
- value_ptr v;
-
- /* Save the current frame and level so we can restore it after
- evaluating the watchpoint expression on its own frame. */
- saved_frame = selected_frame;
- saved_level = selected_frame_level;
-
- /* Determine if the watchpoint is within scope. */
- if (b->exp_valid_block == NULL)
- within_current_scope = 1;
- else
- {
- struct frame_info *fi;
-
- /* There might be no current frame at this moment if we are
- resuming from a step over a breakpoint.
- Set up current frame before trying to find the watchpoint
- frame. */
- get_current_frame ();
- fi = find_frame_addr_in_frame_chain (b->watchpoint_frame);
- within_current_scope = (fi != NULL);
- if (within_current_scope)
- select_frame (fi, -1);
- }
+
+ else if ((b->type == bp_hardware_watchpoint ||
+ b->type == bp_read_watchpoint ||
+ b->type == bp_access_watchpoint)
+ && b->enable == enabled
+ && ! b->inserted
+ && ! b->duplicate)
+ {
+ struct frame_info *saved_frame;
+ int saved_level, within_current_scope;
+ value_ptr mark = value_mark ();
+ value_ptr v;
+
+ /* Save the current frame and level so we can restore it after
+ evaluating the watchpoint expression on its own frame. */
+ saved_frame = selected_frame;
+ saved_level = selected_frame_level;
+
+ /* Determine if the watchpoint is within scope. */
+ if (b->exp_valid_block == NULL)
+ within_current_scope = 1;
+ else
+ {
+ struct frame_info *fi;
+
+ /* There might be no current frame at this moment if we are
+ resuming from a step over a breakpoint.
+ Set up current frame before trying to find the watchpoint
+ frame. */
+ get_current_frame ();
+ fi = find_frame_addr_in_frame_chain (b->watchpoint_frame);
+ within_current_scope = (fi != NULL);
+ if (within_current_scope)
+ select_frame (fi, -1);
+ }
- if (within_current_scope)
- {
- /* Evaluate the expression and cut the chain of values
- produced off from the value chain. */
- v = evaluate_expression (b->exp);
- value_release_to_mark (mark);
+ if (within_current_scope)
+ {
+ /* Evaluate the expression and cut the chain of values
+ produced off from the value chain. */
+ v = evaluate_expression (b->exp);
+ value_release_to_mark (mark);
- b->val_chain = v;
- b->inserted = 1;
+ b->val_chain = v;
+ b->inserted = 1;
- /* Look at each value on the value chain. */
- for ( ; v; v=v->next)
- {
- /* If it's a memory location, then we must watch it. */
- if (v->lval == lval_memory)
- {
- int addr, len, type;
+ /* Look at each value on the value chain. */
+ for ( ; v; v=v->next)
+ {
+ /* If it's a memory location, then we must watch it. */
+ if (v->lval == lval_memory)
+ {
+ int addr, len, type;
- addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- len = TYPE_LENGTH (VALUE_TYPE (v));
- type = 0;
- if (b->type == bp_read_watchpoint)
- type = 1;
- else if (b->type == bp_access_watchpoint)
- type = 2;
-
- val = target_insert_watchpoint (addr, len, type);
- if (val == -1)
- {
- b->inserted = 0;
- break;
- }
- val = 0;
- }
- }
- /* Failure to insert a watchpoint on any memory value in the
- value chain brings us here. */
- if (!b->inserted)
- warning ("Hardware watchpoint %d: Could not insert watchpoint\n",
- b->number);
- }
- else
- {
- printf_filtered ("\
+ addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+ len = TYPE_LENGTH (VALUE_TYPE (v));
+ type = 0;
+ if (b->type == bp_read_watchpoint)
+ type = 1;
+ else if (b->type == bp_access_watchpoint)
+ type = 2;
+
+ val = target_insert_watchpoint (addr, len, type);
+ if (val == -1)
+ {
+ b->inserted = 0;
+ break;
+ }
+ val = 0;
+ }
+ }
+ /* Failure to insert a watchpoint on any memory value in the
+ value chain brings us here. */
+ if (!b->inserted)
+ warning ("Hardware watchpoint %d: Could not insert watchpoint\n",
+ b->number);
+ }
+ else
+ {
+ printf_filtered ("\
Hardware watchpoint %d deleted because the program has left the block in\n\
which its expression is valid.\n", b->number);
- if (b->related_breakpoint)
- b->related_breakpoint->disposition = del_at_next_stop;
- b->disposition = del_at_next_stop;
- }
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
+ }
- /* Restore the frame and level. */
- select_frame (saved_frame, saved_level);
- }
+ /* Restore the frame and level. */
+ if ((saved_frame != selected_frame) ||
+ (saved_level != selected_frame_level))
+ select_and_print_frame (saved_frame, saved_level);
+ }
+ else if ((b->type == bp_catch_fork
+ || b->type == bp_catch_vfork
+ || b->type == bp_catch_exec)
+ && b->enable == enabled
+ && ! b->inserted
+ && ! b->duplicate)
+ {
+ val = -1;
+ switch (b->type)
+ {
+ case bp_catch_fork :
+ val = target_insert_fork_catchpoint (inferior_pid);
+ break;
+ case bp_catch_vfork :
+ val = target_insert_vfork_catchpoint (inferior_pid);
+ break;
+ case bp_catch_exec :
+ val = target_insert_exec_catchpoint (inferior_pid);
+ break;
+ }
+ if (val < 0)
+ {
+ target_terminal_ours_for_output ();
+ fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d:\n", b->number);
+ }
+ else
+ b->inserted = 1;
+ }
+ }
if (disabled_breaks)
printf_filtered ("\n");
+
return val;
}
{
if (b->inserted)
{
- val = remove_breakpoint (b);
+ val = remove_breakpoint (b, mark_uninserted);
if (val != 0)
return val;
}
return 0;
}
+int
+reattach_breakpoints (pid)
+ int pid;
+{
+ register struct breakpoint *b;
+ int val;
+ int saved_inferior_pid = inferior_pid;
+
+ inferior_pid = pid; /* Because remove_breakpoint will use this global. */
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->inserted)
+ {
+ remove_breakpoint (b, mark_inserted);
+ if (b->type == bp_hardware_breakpoint)
+ val = target_insert_hw_breakpoint(b->address, b->shadow_contents);
+ else
+ val = target_insert_breakpoint(b->address, b->shadow_contents);
+ if (val != 0)
+ {
+ inferior_pid = saved_inferior_pid;
+ return val;
+ }
+ }
+ }
+ inferior_pid = saved_inferior_pid;
+ return 0;
+}
+
+void
+update_breakpoints_after_exec ()
+{
+ struct breakpoint * b;
+ struct breakpoint * temp;
+
+ /* Doing this first prevents the badness of having delete_breakpoint()
+ write a breakpoint's current "shadow contents" to lift the bp. That
+ shadow is NOT valid after an exec()! */
+ mark_breakpoints_out ();
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ /* Solib breakpoints must be explicitly reset after an exec(). */
+ if (b->type == bp_shlib_event)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Step-resume breakpoints are meaningless after an exec(). */
+ if (b->type == bp_step_resume)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Ditto the sigtramp handler breakpoints. */
+ if (b->type == bp_through_sigtramp)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Ditto the exception-handling catchpoints. */
+ if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw))
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Don't delete an exec catchpoint, because else the inferior
+ won't stop when it ought!
+
+ Similarly, we probably ought to keep vfork catchpoints, 'cause
+ on this target, we may not be able to stop when the vfork is seen,
+ but only when the subsequent exec is seen. (And because deleting
+ fork catchpoints here but not vfork catchpoints will seem mysterious
+ to users, keep those too.)
+
+ ??rehrauer: Let's hope that merely clearing out this catchpoint's
+ target address field, if any, is sufficient to have it be reset
+ automagically. Certainly on HP-UX that's true. */
+ if ((b->type == bp_catch_exec) ||
+ (b->type == bp_catch_vfork) ||
+ (b->type == bp_catch_fork))
+ {
+ b->address = (CORE_ADDR) NULL;
+ continue;
+ }
+
+ /* bp_finish is a special case. The only way we ought to be able
+ to see one of these when an exec() has happened, is if the user
+ caught a vfork, and then said "finish". Ordinarily a finish just
+ carries them to the call-site of the current callee, by setting
+ a temporary bp there and resuming. But in this case, the finish
+ will carry them entirely through the vfork & exec.
+
+ We don't want to allow a bp_finish to remain inserted now. But
+ we can't safely delete it, 'cause finish_command has a handle to
+ the bp on a bpstat, and will later want to delete it. There's a
+ chance (and I've seen it happen) that if we delete the bp_finish
+ here, that its storage will get reused by the time finish_command
+ gets 'round to deleting the "use to be a bp_finish" breakpoint.
+ We really must allow finish_command to delete a bp_finish.
+
+ In the absense of a general solution for the "how do we know it's
+ safe to delete something others may have handles to?" problem, what
+ we'll do here is just uninsert the bp_finish, and let finish_command
+ delete it.
+
+ (We know the bp_finish is "doomed" in the sense that it's momentary,
+ and will be deleted as soon as finish_command sees the inferior stopped.
+ So it doesn't matter that the bp's address is probably bogus in the
+ new a.out, unlike e.g., the solib breakpoints.) */
+ if (b->type == bp_finish)
+ {
+ continue;
+ }
+
+ /* Without a symbolic address, we have little hope of the
+ pre-exec() address meaning the same thing in the post-exec()
+ a.out. */
+ if (b->addr_string == NULL)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* If this breakpoint has survived the above battery of checks, then
+ it must have a symbolic address. Be sure that it gets reevaluated
+ to a target address, rather than reusing the old evaluation. */
+ b->address = (CORE_ADDR) NULL;
+ }
+}
+
+int
+detach_breakpoints (pid)
+ int pid;
+{
+ register struct breakpoint *b;
+ int val;
+ int saved_inferior_pid = inferior_pid;
+
+ if (pid == inferior_pid)
+ error ("Cannot detach breakpoints of inferior_pid");
+
+ inferior_pid = pid; /* Because remove_breakpoint will use this global. */
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->inserted)
+ {
+ val = remove_breakpoint (b, mark_inserted);
+ if (val != 0)
+ {
+ inferior_pid = saved_inferior_pid;
+ return val;
+ }
+ }
+ }
+ inferior_pid = saved_inferior_pid;
+ return 0;
+}
static int
-remove_breakpoint (b)
+remove_breakpoint (b, is)
struct breakpoint *b;
+ insertion_state_t is;
{
int val;
+ if (b->type == bp_none)
+ warning ("attempted to remove apparently deleted breakpoint #%d?\n", b->number);
+
if (b->type != bp_watchpoint
&& b->type != bp_hardware_watchpoint
&& b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint)
+ && b->type != bp_access_watchpoint
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_catch
+ && b->type != bp_catch_throw)
+
{
if (b->type == bp_hardware_breakpoint)
val = target_remove_hw_breakpoint(b->address, b->shadow_contents);
}
if (val)
return val;
- b->inserted = 0;
+ b->inserted = (is == mark_inserted);
}
else if ((b->type == bp_hardware_watchpoint ||
b->type == bp_read_watchpoint ||
{
value_ptr v, n;
- b->inserted = 0;
+ b->inserted = (is == mark_inserted);
/* Walk down the saved value chain. */
for (v = b->val_chain; v; v = v->next)
{
}
}
/* Failure to remove any of the hardware watchpoints comes here. */
- if (b->inserted)
+ if ((is == mark_uninserted) && (b->inserted))
warning ("Hardware watchpoint %d: Could not remove watchpoint\n",
b->number);
}
b->val_chain = NULL;
}
+ else if ((b->type == bp_catch_fork ||
+ b->type == bp_catch_vfork ||
+ b->type == bp_catch_exec)
+ && b->enable == enabled
+ && ! b->duplicate)
+ {
+ val = -1;
+ switch (b->type)
+ {
+ case bp_catch_fork:
+ val = target_remove_fork_catchpoint (inferior_pid);
+ break;
+ case bp_catch_vfork :
+ val = target_remove_vfork_catchpoint (inferior_pid);
+ break;
+ case bp_catch_exec :
+ val = target_remove_exec_catchpoint (inferior_pid);
+ break;
+ }
+ if (val)
+ return val;
+ b->inserted = (is == mark_inserted);
+ }
+ else if ((b->type == bp_catch_catch ||
+ b->type == bp_catch_throw)
+ && b->enable == enabled
+ && ! b->duplicate)
+ {
+
+ val = target_remove_breakpoint(b->address, b->shadow_contents);
+ if (val)
+ return val;
+ b->inserted = (is == mark_inserted);
+ }
+ else if (ep_is_exception_catchpoint (b)
+ && b->inserted /* sometimes previous insert doesn't happen */
+ && b->enable == enabled
+ && ! b->duplicate)
+ {
+
+ val = target_remove_breakpoint(b->address, b->shadow_contents);
+ if (val)
+ return val;
+
+ b->inserted = (is == mark_inserted);
+ }
+
return 0;
}
}
/* Clear the "inserted" flag in all breakpoints and delete any breakpoints
- which should go away between runs of the program. */
+ which should go away between runs of the program.
+
+ Plus other such housekeeping that has to be done for breakpoints
+ between runs.
+
+ Note: this function gets called at the end of a run (by generic_mourn_inferior)
+ and when a run begins (by init_wait_for_inferior). */
+
+
void
-breakpoint_init_inferior ()
+breakpoint_init_inferior (context)
+ enum inf_context context;
{
register struct breakpoint *b, *temp;
+ static int warning_needed = 0;
ALL_BREAKPOINTS_SAFE (b, temp)
{
if (b->exp_valid_block != NULL)
delete_breakpoint (b);
break;
-
default:
- break;
+ /* Likewise for exception catchpoints in dynamic-linked
+ executables where required */
+ if (ep_is_exception_catchpoint (b) &&
+ exception_catchpoints_are_fragile)
+ {
+ warning_needed = 1;
+ delete_breakpoint (b);
+ }
+ break;
}
}
+
+ if (exception_catchpoints_are_fragile)
+ exception_support_initialized = 0;
+
+ /* Don't issue the warning unless it's really needed... */
+ if (warning_needed && (context != inf_exited))
+ {
+ warning ("Exception catchpoints from last run were deleted, you must reinsert them explicitly");
+ warning_needed = 0;
+ }
}
/* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC.
ALL_BREAKPOINTS (b)
if (b->enable == enabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
&& b->address == pc) /* bp is enabled and matches pc */
{
if (overlay_debugging &&
ALL_BREAKPOINTS (b)
if (b->enable != disabled
&& b->enable != shlib_disabled
+ && b->enable != call_disabled
&& b->address == pc
&& (b->thread == -1 || b->thread == thread))
{
/* bpstat stuff. External routines' interfaces are documented
in breakpoint.h. */
+int
+ep_is_catchpoint (ep)
+ struct breakpoint * ep;
+{
+ return
+ (ep->type == bp_catch_load)
+ || (ep->type == bp_catch_unload)
+ || (ep->type == bp_catch_fork)
+ || (ep->type == bp_catch_vfork)
+ || (ep->type == bp_catch_exec)
+ || (ep->type == bp_catch_catch)
+ || (ep->type == bp_catch_throw)
+
+
+ /* ??rehrauer: Add more kinds here, as are implemented... */
+ ;
+}
+
+int
+ep_is_shlib_catchpoint (ep)
+ struct breakpoint * ep;
+{
+ return
+ (ep->type == bp_catch_load)
+ || (ep->type == bp_catch_unload)
+ ;
+}
+
+int
+ep_is_exception_catchpoint (ep)
+ struct breakpoint * ep;
+{
+ return
+ (ep->type == bp_catch_catch)
+ || (ep->type == bp_catch_throw)
+ ;
+}
+
/* Clear a bpstat so that it says we are not at any breakpoint.
Also free any storage that is part of a bpstat. */
return NULL;
}
+/* Find a step_resume breakpoint associated with this bpstat.
+ (If there are multiple step_resume bp's on the list, this function
+ will arbitrarily pick one.)
+
+ It is an error to use this function if BPSTAT doesn't contain a
+ step_resume breakpoint.
+
+ See wait_for_inferior's use of this function. */
+struct breakpoint *
+bpstat_find_step_resume_breakpoint (bsp)
+ bpstat bsp;
+{
+ if (bsp == NULL)
+ error ("Internal error (bpstat_find_step_resume_breakpoint)");
+
+ for (; bsp != NULL; bsp = bsp->next)
+ {
+ if ((bsp->breakpoint_at != NULL) &&
+ (bsp->breakpoint_at->type == bp_step_resume))
+ return bsp->breakpoint_at;
+ }
+
+ error ("Internal error (no step_resume breakpoint found)");
+}
+
+
/* 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
old_chain = make_cleanup (cleanup_executing_breakpoints, 0);
top:
+ /* Note that (as of this writing), our callers all appear to
+ be passing us the address of global stop_bpstat. And, if
+ our calls to execute_control_command cause the inferior to
+ proceed, that global (and hence, *bsp) will change.
+
+ We must be careful to not touch *bsp unless the inferior
+ has not proceeded. */
+
+ /* This pointer will iterate over the list of bpstat's. */
bs = *bsp;
breakpoint_proceeded = 0;
while (cmd != NULL)
{
execute_control_command (cmd);
- cmd = cmd->next;
+
+ if (breakpoint_proceeded)
+ break;
+ else
+ cmd = cmd->next;
}
if (breakpoint_proceeded)
/* The inferior is proceeded by the command; bomb out now.
/* This is the normal print_it function for a bpstat. In the future,
much of this logic could (should?) be moved to bpstat_stop_status,
- by having it set different print_it functions. */
+ by having it set different print_it functions.
+
+ Current scheme: When we stop, bpstat_print() is called.
+ It loops through the bpstat list of things causing this stop,
+ calling the print_it function for each one. The default
+ print_it function, used for breakpoints, is print_it_normal().
+ (Also see print_it_noop() and print_it_done()).
+
+ Return values from this routine (used by bpstat_print() to
+ decide what to do):
+ 1: Means we printed something, and we do *not* desire that
+ something to be followed by a location.
+ 0: Means we printed something, and we *do* desire that
+ something to be followed by a location.
+ -1: Means we printed nothing. */
static int
print_it_normal (bs)
which has since been deleted. */
if (bs->breakpoint_at == NULL
|| (bs->breakpoint_at->type != bp_breakpoint
+ && bs->breakpoint_at->type != bp_catch_load
+ && bs->breakpoint_at->type != bp_catch_unload
+ && bs->breakpoint_at->type != bp_catch_fork
+ && bs->breakpoint_at->type != bp_catch_vfork
+ && bs->breakpoint_at->type != bp_catch_exec
+ && bs->breakpoint_at->type != bp_catch_catch
+ && bs->breakpoint_at->type != bp_catch_throw
&& bs->breakpoint_at->type != bp_hardware_breakpoint
&& bs->breakpoint_at->type != bp_watchpoint
&& bs->breakpoint_at->type != bp_read_watchpoint
&& bs->breakpoint_at->type != bp_access_watchpoint
&& bs->breakpoint_at->type != bp_hardware_watchpoint))
- return 0;
+ return -1;
+
+ if (ep_is_shlib_catchpoint (bs->breakpoint_at))
+ {
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+ if (bs->breakpoint_at->type == bp_catch_load)
+ printf_filtered ("loaded");
+ else if (bs->breakpoint_at->type == bp_catch_unload)
+ printf_filtered ("unloaded");
+ printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname);
+ return 0;
+ }
+ else if (bs->breakpoint_at->type == bp_catch_fork ||
+ bs->breakpoint_at->type == bp_catch_vfork)
+ {
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+ if (bs->breakpoint_at->type == bp_catch_fork)
+ printf_filtered ("forked");
+ else if (bs->breakpoint_at->type == bp_catch_vfork)
+ printf_filtered ("vforked");
+ printf_filtered (" process %d), ", bs->breakpoint_at->forked_inferior_pid);
+ return 0;
+ }
+ else if (bs->breakpoint_at->type == bp_catch_exec)
+ {
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (exec'd %s), ",
+ bs->breakpoint_at->number,
+ bs->breakpoint_at->exec_pathname);
+ return 0;
+ }
+ else if (bs->breakpoint_at->type == bp_catch_catch)
+ {
+ if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH))
+ {
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (exception caught), ", bs->breakpoint_at->number);
+ printf_filtered ("throw location ");
+ if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE)
+ printf_filtered ("%s:%d",
+ CURRENT_EXCEPTION_THROW_FILE,
+ CURRENT_EXCEPTION_THROW_LINE);
+ else
+ printf_filtered ("unknown");
+
+ printf_filtered (", catch location ");
+ if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE)
+ printf_filtered ("%s:%d",
+ CURRENT_EXCEPTION_CATCH_FILE,
+ CURRENT_EXCEPTION_CATCH_LINE);
+ else
+ printf_filtered ("unknown");
+
+ printf_filtered ("\n");
+ return 1; /* don't bother to print location frame info */
+ }
+ else
+ {
+ return -1; /* really throw, some other bpstat will handle it */
+ }
+ }
+ else if (bs->breakpoint_at->type == bp_catch_throw)
+ {
+ if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW))
+ {
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (exception thrown), ", bs->breakpoint_at->number);
+ printf_filtered ("throw location ");
+ if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE)
+ printf_filtered ("%s:%d",
+ CURRENT_EXCEPTION_THROW_FILE,
+ CURRENT_EXCEPTION_THROW_LINE);
+ else
+ printf_filtered ("unknown");
+
+ printf_filtered (", catch location ");
+ if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE)
+ printf_filtered ("%s:%d",
+ CURRENT_EXCEPTION_CATCH_FILE,
+ CURRENT_EXCEPTION_CATCH_LINE);
+ else
+ printf_filtered ("unknown");
+
+ printf_filtered ("\n");
+ return 1; /* don't bother to print location frame info */
+ }
+ else
+ {
+ return -1; /* really catch, some other bpstat willhandle it */
+ }
+ }
- if (bs->breakpoint_at->type == bp_breakpoint ||
+ else if (bs->breakpoint_at->type == bp_breakpoint ||
bs->breakpoint_at->type == bp_hardware_breakpoint)
{
/* I think the user probably only wants to see one breakpoint
return -1;
}
-/* 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). */
-/* Currently we always return zero. */
+/* Print a message indicating what happened.
+ This is called from normal_stop().
+ The input to this routine is the head of the bpstat list - a list
+ of the eventpoints that caused this stop.
+ This routine calls the "print_it" routine(s) associated
+ with these eventpoints. This will print (for example)
+ the "Breakpoint n," part of the output.
+ The return value of this routine is one of:
+
+ -1: Means we printed nothing
+ 0: Means we printed something, and expect subsequent
+ code to print the location. An example is
+ "Breakpoint 1, " which should be followed by
+ the location.
+ 1 : Means we printed something, but there is no need
+ to also print the location part of the message.
+ An example is the catch/throw messages, which
+ don't require a location appended to the end. */
+
int
bpstat_print (bs)
bpstat bs;
int val;
if (bs == NULL)
- return 0;
+ return -1;
val = (*bs->print_it) (bs);
if (val >= 0)
return bpstat_print (bs->next);
/* We reached the end of the chain without printing anything. */
- return 0;
+ return -1;
}
/* Evaluate the expression EXP and return 1 if value is zero.
static int
breakpoint_cond_eval (exp)
- char *exp;
+ PTR exp;
{
value_ptr mark = value_mark ();
int i = !value_true (evaluate_expression ((struct expression *)exp));
static int
watchpoint_check (p)
- char *p;
+ PTR p;
{
bpstat bs = (bpstat) p;
struct breakpoint *b;
/* This is used when everything which needs to be printed has
already been printed. But we still want to print the frame. */
+
+/* Background: When we stop, bpstat_print() is called.
+ It loops through the bpstat list of things causing this stop,
+ calling the print_it function for each one. The default
+ print_it function, used for breakpoints, is print_it_normal().
+ Also see print_it_noop() and print_it_done() are the other
+ two possibilities. See comments in bpstat_print() and
+ in header of print_it_normal() for more detail. */
+
static int
print_it_done (bs)
bpstat bs;
}
/* This is used when nothing should be printed for this bpstat entry. */
+/* Background: When we stop, bpstat_print() is called.
+ It loops through the bpstat list of things causing this stop,
+ calling the print_it function for each one. The default
+ print_it function, used for breakpoints, is print_it_normal().
+ Also see print_it_noop() and print_it_done() are the other
+ two possibilities. See comments in bpstat_print() and
+ in header of print_it_normal() for more detail. */
static int
print_it_noop (bs)
several reasons concurrently.)
Each element of the chain has valid next, breakpoint_at,
- commands, FIXME??? fields.
-
- */
+ commands, FIXME??? fields. */
bpstat
bpstat_stop_status (pc, not_a_breakpoint)
ALL_BREAKPOINTS_SAFE (b, temp)
{
if (b->enable == disabled
- || b->enable == shlib_disabled)
+ || b->enable == shlib_disabled
+ || b->enable == call_disabled)
continue;
if (b->type != bp_watchpoint
&& b->type != bp_hardware_watchpoint
&& b->type != bp_read_watchpoint
&& b->type != bp_access_watchpoint
- && b->type != bp_hardware_breakpoint) /* a non-watchpoint bp */
+ && b->type != bp_hardware_breakpoint
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_catch
+ && b->type != bp_catch_throw) /* a non-watchpoint bp */
if (b->address != bp_addr || /* address doesn't match or */
(overlay_debugging && /* overlay doesn't match */
section_is_overlay (b->section) &&
&& not_a_breakpoint)
continue;
- /* Come here if it's a watchpoint, or if the break address matches */
+ /* Is this a catchpoint of a load or unload? If so, did we
+ get a load or unload of the specified library? If not,
+ ignore it. */
+ if ((b->type == bp_catch_load)
+#if defined(SOLIB_HAVE_LOAD_EVENT)
+ && (!SOLIB_HAVE_LOAD_EVENT(inferior_pid)
+ || ((b->dll_pathname != NULL)
+ && (strcmp (b->dll_pathname, SOLIB_LOADED_LIBRARY_PATHNAME(inferior_pid)) != 0)))
+#endif
+ )
+ continue;
+
+ if ((b->type == bp_catch_unload)
+#if defined(SOLIB_HAVE_UNLOAD_EVENT)
+ && (!SOLIB_HAVE_UNLOAD_EVENT(inferior_pid)
+ || ((b->dll_pathname != NULL)
+ && (strcmp (b->dll_pathname, SOLIB_UNLOADED_LIBRARY_PATHNAME(inferior_pid)) != 0)))
+#endif
+ )
+ continue;
+
+ if ((b->type == bp_catch_fork)
+ && ! target_has_forked (inferior_pid, &b->forked_inferior_pid))
+ continue;
+
+ if ((b->type == bp_catch_vfork)
+ && ! target_has_vforked (inferior_pid, &b->forked_inferior_pid))
+ continue;
+
+ if ((b->type == bp_catch_exec)
+ && ! target_has_execd (inferior_pid, &b->exec_pathname))
+ continue;
- ++(b->hit_count);
+ if (ep_is_exception_catchpoint (b) &&
+ !(current_exception_event = target_get_current_exception_event ()))
+ continue;
+
+ /* Come here if it's a watchpoint, or if the break address matches */
bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */
+ /* Watchpoints may change this, if not found to have triggered. */
bs->stop = 1;
bs->print = 1;
sprintf (message, message1, b->number);
if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint)
{
- switch (catch_errors (watchpoint_check, (char *) bs, message,
- RETURN_MASK_ALL))
+ switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL))
{
case WP_DELETED:
/* We've already printed what needs to be printed. */
break;
case WP_VALUE_CHANGED:
/* Stop. */
+ ++(b->hit_count);
break;
case WP_VALUE_NOT_CHANGED:
/* Don't stop. */
bs->print_it = print_it_noop;
bs->stop = 0;
- --(b->hit_count); /* don't consider this a hit */
+ /* Don't consider this a hit. */
+ --(b->hit_count);
continue;
default:
/* Can't happen. */
}
}
if (found)
- switch (catch_errors (watchpoint_check, (char *) bs, message,
- RETURN_MASK_ALL))
+ switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL))
{
case WP_DELETED:
/* We've already printed what needs to be printed. */
case WP_VALUE_CHANGED:
case WP_VALUE_NOT_CHANGED:
/* Stop. */
+ ++(b->hit_count);
break;
default:
/* Can't happen. */
break;
}
}
- else if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs)
- real_breakpoint = 1;
+ else
+ {
+ /* By definition, an encountered breakpoint is a triggered
+ breakpoint. */
+ ++(b->hit_count);
+
+ if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs)
+ real_breakpoint = 1;
+ }
if (b->frame && b->frame != (get_current_frame ())->frame &&
(b->type == bp_step_resume &&
- (get_current_frame ())->frame INNER_THAN b->frame))
+ (INNER_THAN (get_current_frame ()->frame, b->frame))))
bs->stop = 0;
else
{
so that the conditions will have the right context. */
select_frame (get_current_frame (), 0);
value_is_zero
- = catch_errors (breakpoint_cond_eval, (char *)(b->cond),
+ = catch_errors (breakpoint_cond_eval, (b->cond),
"Error in testing breakpoint condition:\n",
RETURN_MASK_ALL);
/* FIXME-someday, should give breakpoint # */
if (b->cond && value_is_zero)
{
bs->stop = 0;
+ /* Don't consider this a hit. */
+ --(b->hit_count);
}
else if (b->ignore_count > 0)
{
bs->commands = b->commands;
if (b->silent)
bs->print = 0;
- if (bs->commands && STREQ ("silent", bs->commands->line))
+ if (bs->commands &&
+ (STREQ ("silent", bs->commands->line) ||
+ (xdb_commands && STREQ ("Q", bs->commands->line))))
{
bs->commands = bs->commands->next;
bs->print = 0;
/* We hit the shared library event breakpoint. */
shlib_event,
+ /* We caught a shared library event. */
+ catch_shlib_event,
+
/* This is just used to count how many enums there are. */
class_last
};
#define sr BPSTAT_WHAT_STEP_RESUME
#define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
#define shl BPSTAT_WHAT_CHECK_SHLIBS
+#define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
/* "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 */
- /* kc ss sn sgl slr clr clrs sr ts shl
- */
-/*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}
- };
+ /* kc ss sn sgl slr clr clrs sr ts shl shlr
+ */
+/*no_effect*/ {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr},
+/*wp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr},
+/*wp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr},
+/*bp_nostop*/ {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr},
+/*bp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr},
+/*bp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr},
+/*long_jump*/ {slr, ss, sn, slr, err, err, err, sr, ts, shl, shlr},
+/*long_resume*/ {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr},
+/*step_resume*/ {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr},
+/*through_sig*/ {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr},
+/*shlib*/ {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr},
+/*catch_shlib*/ {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr}
+ };
+
#undef kc
#undef ss
#undef sn
#undef sr
#undef ts
#undef shl
+#undef shlr
enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING;
struct bpstat_what retval;
continue;
switch (bs->breakpoint_at->type)
{
+ case bp_none:
+ continue;
+
case bp_breakpoint:
case bp_hardware_breakpoint:
case bp_until:
case bp_shlib_event:
bs_class = shlib_event;
break;
+ case bp_catch_load:
+ case bp_catch_unload:
+ /* Only if this catchpoint triggered should we cause the
+ step-out-of-dld behaviour. Otherwise, we ignore this
+ catchpoint. */
+ if (bs->stop)
+ bs_class = catch_shlib_event;
+ else
+ bs_class = no_effect;
+ break;
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
+ if (bs->stop)
+ {
+ if (bs->print)
+ bs_class = bp_noisy;
+ else
+ bs_class = bp_silent;
+ }
+ else
+ /* There was a catchpoint, but we're not stopping. This requires
+ no further action. */
+ bs_class = no_effect;
+ break;
+ case bp_catch_catch:
+ if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH)
+ bs_class = bp_nostop;
+ else if (bs->stop)
+ bs_class = bs->print ? bp_noisy : bp_silent;
+ break;
+ case bp_catch_throw:
+ if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW)
+ bs_class = bp_nostop;
+ else if (bs->stop)
+ bs_class = bs->print ? bp_noisy : bp_silent;
+ break;
case bp_call_dummy:
/* Make sure the action is stop (silent or noisy), so infrun.c
pops the dummy frame. */
return 1;
return 0;
}
+
+/* Nonzero if there are enabled hardware watchpoints. */
+int
+bpstat_have_active_hw_watchpoints ()
+{
+ struct breakpoint *b;
+ ALL_BREAKPOINTS (b)
+ if ((b->enable == enabled) &&
+ (b->inserted) &&
+ ((b->type == bp_hardware_watchpoint) ||
+ (b->type == bp_read_watchpoint) ||
+ (b->type == bp_access_watchpoint)))
+ return 1;
+ return 0;
+}
+
\f
+/* Given a bpstat that records zero or more triggered eventpoints, this
+ function returns another bpstat which contains only the catchpoints
+ on that first list, if any. */
+void
+bpstat_get_triggered_catchpoints (ep_list, cp_list)
+ bpstat ep_list;
+ bpstat * cp_list;
+{
+ struct bpstats root_bs[1];
+ bpstat bs = root_bs;
+ struct breakpoint * ep;
+ char * dll_pathname;
+
+ bpstat_clear (cp_list);
+ root_bs->next = NULL;
+
+ for (; ep_list != NULL; ep_list = ep_list->next )
+ {
+ /* Is this eventpoint a catchpoint? If not, ignore it. */
+ ep = ep_list->breakpoint_at;
+ if (ep == NULL)
+ break;
+ if ((ep->type != bp_catch_load) &&
+ (ep->type != bp_catch_unload) &&
+ (ep->type != bp_catch_catch) &&
+ (ep->type != bp_catch_throw)) /* pai: (temp) ADD fork/vfork here!! */
+ continue;
+
+ /* Yes; add it to the list. */
+ bs = bpstat_alloc (ep, bs);
+ *bs = *ep_list;
+ bs->next = NULL;
+ bs = root_bs->next;
+
+#if defined(SOLIB_ADD)
+ /* Also, for each triggered catchpoint, tag it with the name of
+ the library that caused this trigger. (We copy the name now,
+ because it's only guaranteed to be available NOW, when the
+ catchpoint triggers. Clients who may wish to know the name
+ later must get it from the catchpoint itself.) */
+ if (ep->triggered_dll_pathname != NULL)
+ free (ep->triggered_dll_pathname);
+ if (ep->type == bp_catch_load)
+ dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid);
+ else
+ dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid);
+#else
+ dll_pathname = NULL;
+#endif
+ if (dll_pathname)
+ {
+ ep->triggered_dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1);
+ strcpy (ep->triggered_dll_pathname, dll_pathname);
+ }
+ else
+ ep->triggered_dll_pathname = NULL;
+ }
+
+ *cp_list = bs;
+}
+
/* Print information on breakpoint number BNUM, or -1 if all.
If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS
is nonzero, process only watchpoints. */
+typedef struct {
+ enum bptype type;
+ char * description;
+} ep_type_description_t;
+
static void
breakpoint_1 (bnum, allflag)
int bnum;
register struct symbol *sym;
CORE_ADDR last_addr = (CORE_ADDR)-1;
int found_a_breakpoint = 0;
- static char *bptypes[] = {"breakpoint", "hw breakpoint",
- "until", "finish", "watchpoint",
- "hw watchpoint", "read watchpoint",
- "acc watchpoint", "longjmp",
- "longjmp resume", "step resume",
- "sigtramp",
- "watchpoint scope", "call dummy",
- "shlib events" };
+ static ep_type_description_t bptypes[] =
+ {
+ {bp_none, "?deleted?"},
+ {bp_breakpoint, "breakpoint"},
+ {bp_hardware_breakpoint, "hw breakpoint"},
+ {bp_until, "until"},
+ {bp_finish, "finish"},
+ {bp_watchpoint, "watchpoint"},
+ {bp_hardware_watchpoint, "hw watchpoint"},
+ {bp_read_watchpoint, "read watchpoint"},
+ {bp_access_watchpoint, "acc watchpoint"},
+ {bp_longjmp, "longjmp"},
+ {bp_longjmp_resume, "longjmp resume"},
+ {bp_step_resume, "step resume"},
+ {bp_through_sigtramp, "sigtramp"},
+ {bp_watchpoint_scope, "watchpoint scope"},
+ {bp_call_dummy, "call dummy"},
+ {bp_shlib_event, "shlib events"},
+ {bp_catch_load, "catch load"},
+ {bp_catch_unload, "catch unload"},
+ {bp_catch_fork, "catch fork"},
+ {bp_catch_vfork, "catch vfork"},
+ {bp_catch_exec, "catch exec"},
+ {bp_catch_catch, "catch catch"},
+ {bp_catch_throw, "catch throw"}
+ };
+
static char *bpdisps[] = {"del", "dstp", "dis", "keep"};
static char bpenables[] = "nyn";
char wrap_indent[80];
/* We only print out user settable breakpoints unless the allflag is set. */
if (!allflag
&& b->type != bp_breakpoint
+ && b->type != bp_catch_load
+ && b->type != bp_catch_unload
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_catch
+ && b->type != bp_catch_throw
&& b->type != bp_hardware_breakpoint
&& b->type != bp_watchpoint
&& b->type != bp_read_watchpoint
annotate_field (0);
printf_filtered ("%-3d ", b->number);
annotate_field (1);
- printf_filtered ("%-14s ", bptypes[(int)b->type]);
+ if ((int)b->type > (sizeof(bptypes)/sizeof(bptypes[0])))
+ error ("bptypes table does not describe type #%d.", (int)b->type);
+ if ((int)b->type != bptypes[(int)b->type].type)
+ error ("bptypes table does not describe type #%d?", (int)b->type);
+ printf_filtered ("%-14s ", bptypes[(int)b->type].description);
annotate_field (2);
printf_filtered ("%-4s ", bpdisps[(int)b->disposition]);
annotate_field (3);
annotate_field (5);
print_expression (b->exp, gdb_stdout);
break;
+
+ case bp_catch_load:
+ case bp_catch_unload:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+ annotate_field (5);
+ if (b->dll_pathname == NULL)
+ printf_filtered ("<any library> ");
+ else
+ printf_filtered ("library \"%s\" ", b->dll_pathname);
+ break;
+
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+ annotate_field (5);
+ if (b->forked_inferior_pid != 0)
+ printf_filtered ("process %d ", b->forked_inferior_pid);
+ break;
+
+ case bp_catch_exec:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+ annotate_field (5);
+ if (b->exec_pathname != NULL)
+ printf_filtered ("program \"%s\" ", b->exec_pathname);
+ break;
+ case bp_catch_catch:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+ annotate_field (5);
+ printf_filtered ("exception catch ");
+ break;
+ case bp_catch_throw:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+ annotate_field (5);
+ printf_filtered ("exception throw ");
+ break;
case bp_breakpoint:
case bp_hardware_breakpoint:
break;
}
+ if (b->thread != -1)
+ printf_filtered (" thread %d", b->thread );
+
printf_filtered ("\n");
if (b->frame)
if (show_breakpoint_hit_counts && b->hit_count)
{
/* FIXME should make an annotation for this */
-
- printf_filtered ("\tbreakpoint already hit %d time%s\n",
- b->hit_count, (b->hit_count == 1 ? "" : "s"));
+ if (ep_is_catchpoint (b))
+ printf_filtered ("\tcatchpoint");
+ else
+ printf_filtered ("\tbreakpoint");
+ printf_filtered (" already hit %d time%s\n",
+ b->hit_count, (b->hit_count == 1 ? "" : "s"));
}
if (b->ignore_count)
#if MAINTENANCE_CMDS
/* ARGSUSED */
-static void
+void
maintenance_info_breakpoints (bnum_exp, from_tty)
char *bnum_exp;
int from_tty;
printf_filtered
("%d%s%s ",
b->number,
- ((b->enable == disabled || b->enable == shlib_disabled)
+ ((b->enable == disabled || b->enable == shlib_disabled || b->enable == call_disabled)
? " (disabled)" : ""),
(others > 1) ? "," : ((others == 1) ? " and" : ""));
}
ALL_BREAKPOINTS (b)
if (b->enable != disabled
&& b->enable != shlib_disabled
+ && b->enable != call_disabled
&& b->address == address
&& (overlay_debugging == 0 || b->section == section))
{
b->ignore_count = 0;
b->commands = NULL;
b->frame = 0;
+ b->dll_pathname = NULL;
+ b->triggered_dll_pathname = NULL;
+ b->forked_inferior_pid = 0;
+ b->exec_pathname = NULL;
/* Add this breakpoint to the end of the chain
so that a list of breakpoints will come out in order
b->type = bp_shlib_event;
}
+void
+disable_breakpoints_in_shlibs (silent)
+ int silent;
+{
+ struct breakpoint * b;
+ int disabled_shlib_breaks = 0;
+
+ /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
+ ALL_BREAKPOINTS (b)
+ {
+#if defined (PC_SOLIB)
+ if (((b->type == bp_breakpoint) ||
+ (b->type == bp_hardware_breakpoint)) &&
+ (b->enable != shlib_disabled) &&
+ (b->enable != call_disabled) &&
+ ! b->duplicate &&
+ PC_SOLIB (b->address))
+ {
+ b->enable = shlib_disabled;
+ if (!silent)
+ {
+ if (!disabled_shlib_breaks)
+ {
+ target_terminal_ours_for_output ();
+ printf_filtered ("Temporarily disabling shared library breakpoints:\n");
+ }
+ disabled_shlib_breaks = 1;
+ printf_filtered ("%d ", b->number);
+ }
+ }
+#endif
+ }
+ if (disabled_shlib_breaks && !silent)
+ printf_filtered ("\n");
+}
+
/* Try to reenable any breakpoints in shared libraries. */
void
re_enable_breakpoints_in_shlibs ()
{
struct breakpoint *b;
- ALL_BREAKPOINTS (b)
- if (b->enable == shlib_disabled)
- {
- char buf[1];
+ ALL_BREAKPOINTS (b)
+ if (b->enable == shlib_disabled)
+ {
+ char buf[1];
+
+ /* Do not reenable the breakpoint if the shared library
+ is still not mapped in. */
+ if (target_read_memory (b->address, buf, 1) == 0)
+ b->enable = enabled;
+ }
+}
+
+#endif
+
+static void
+create_solib_load_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string, bp_kind)
+ char * hookname;
+ int tempflag;
+ char * dll_pathname;
+ char * cond_string;
+ enum bptype bp_kind;
+{
+ struct breakpoint * b;
+ struct symtabs_and_lines sals;
+ struct symtab_and_line sal;
+ struct cleanup * old_chain;
+ struct cleanup * canonical_strings_chain = NULL;
+ int i;
+ char * addr_start = hookname;
+ char * addr_end = NULL;
+ char ** canonical = (char **) NULL;
+ int thread = -1; /* All threads. */
+
+ /* Set a breakpoint on the specified hook. */
+ sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical);
+ addr_end = hookname;
+
+ if (sals.nelts == 0)
+ {
+ warning ("Unable to set a breakpoint on dynamic linker callback.");
+ warning ("Suggest linking with /opt/langtools/lib/end.o.");
+ warning ("GDB will be unable to track shl_load/shl_unload calls");
+ return;
+ }
+ if (sals.nelts != 1)
+ {
+ warning ("Unable to set a unique breakpoint on dynamic linker callback.");
+ warning ("GDB will be unable to track shl_load/shl_unload calls");
+ return;
+ }
+
+ /* Make sure that all storage allocated in decode_line_1 gets freed in case
+ the following errors out. */
+ old_chain = make_cleanup (free, sals.sals);
+ if (canonical != (char **)NULL)
+ {
+ make_cleanup (free, canonical);
+ canonical_strings_chain = make_cleanup (null_cleanup, 0);
+ if (canonical[0] != NULL)
+ make_cleanup (free, canonical[0]);
+ }
+
+ resolve_sal_pc (&sals.sals[0]);
+
+ /* Remove the canonical strings from the cleanup, they are needed below. */
+ if (canonical != (char **)NULL)
+ discard_cleanups (canonical_strings_chain);
+
+ b = set_raw_breakpoint (sals.sals[0]);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+
+ if (canonical != (char **)NULL && canonical[0] != NULL)
+ b->addr_string = canonical[0];
+ else if (addr_start)
+ b->addr_string = savestring (addr_start, addr_end - addr_start);
+
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+
+ if (dll_pathname == NULL)
+ b->dll_pathname = NULL;
+ else
+ {
+ b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1);
+ strcpy (b->dll_pathname, dll_pathname);
+ }
+ b->type = bp_kind;
+
+ mention (b);
+ do_cleanups (old_chain);
+}
+
+void
+create_solib_load_event_breakpoint (hookname, tempflag, dll_pathname, cond_string)
+ char * hookname;
+ int tempflag;
+ char * dll_pathname;
+ char * cond_string;
+{
+ create_solib_load_unload_event_breakpoint (hookname,
+ tempflag,
+ dll_pathname,
+ cond_string,
+ bp_catch_load);
+}
+
+void
+create_solib_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string)
+ char * hookname;
+ int tempflag;
+ char * dll_pathname;
+ char * cond_string;
+{
+ create_solib_load_unload_event_breakpoint (hookname,
+ tempflag,
+ dll_pathname,
+ cond_string,
+ bp_catch_unload);
+}
+
+static void
+create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind)
+ int tempflag;
+ char * cond_string;
+ enum bptype bp_kind;
+{
+ struct symtab_and_line sal;
+ struct breakpoint * b;
+ int thread = -1; /* All threads. */
+
+ INIT_SAL(&sal);
+ sal.pc = 0;
+ sal.symtab = NULL;
+ sal.line = 0;
+
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+ b->addr_string = NULL;
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+ b->forked_inferior_pid = 0;
+
+ b->type = bp_kind;
+
+ mention (b);
+}
+
+void
+create_fork_event_catchpoint (tempflag, cond_string)
+ int tempflag;
+ char * cond_string;
+{
+ create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork);
+}
+
+void
+create_vfork_event_catchpoint (tempflag, cond_string)
+ int tempflag;
+ char * cond_string;
+{
+ create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork);
+}
+
+void
+create_exec_event_catchpoint (tempflag, cond_string)
+ int tempflag;
+ char * cond_string;
+{
+ struct symtab_and_line sal;
+ struct breakpoint * b;
+ int thread = -1; /* All threads. */
+
+ INIT_SAL(&sal);
+ sal.pc = 0;
+ sal.symtab = NULL;
+ sal.line = 0;
+
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+ b->addr_string = NULL;
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+
+ b->type = bp_catch_exec;
- /* Do not reenable the breakpoint if the shared library
- is still not mapped in. */
- if (target_read_memory (b->address, buf, 1) == 0)
- b->enable = enabled;
- }
+ mention (b);
}
-#endif
-
static int
hw_breakpoint_used_count()
{
breakpoint at the target of the jmp_buf.
FIXME - This ought to be done by setting a temporary breakpoint that gets
- deleted automatically...
-*/
+ deleted automatically... */
void
set_longjmp_resume_breakpoint(pc, frame)
}
}
+void
+disable_watchpoints_before_interactive_call_start ()
+{
+ struct breakpoint * b;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (((b->type == bp_watchpoint)
+ || (b->type == bp_hardware_watchpoint)
+ || (b->type == bp_read_watchpoint)
+ || (b->type == bp_access_watchpoint)
+ || ep_is_exception_catchpoint (b))
+ && (b->enable == enabled))
+ {
+ b->enable = call_disabled;
+ check_duplicates (b->address, b->section);
+ }
+ }
+}
+
+void
+enable_watchpoints_after_interactive_call_stop ()
+{
+ struct breakpoint * b;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (((b->type == bp_watchpoint)
+ || (b->type == bp_hardware_watchpoint)
+ || (b->type == bp_read_watchpoint)
+ || (b->type == bp_access_watchpoint)
+ || ep_is_exception_catchpoint (b))
+ && (b->enable == call_disabled))
+ {
+ b->enable = enabled;
+ check_duplicates (b->address, b->section);
+ }
+ }
+}
+
+
/* Set a breakpoint that will evaporate an end of command
at address specified by SAL.
Restrict it to frame FRAME if FRAME is nonzero. */
switch (b->type)
{
+ case bp_none:
+ printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number);
+ break;
case bp_watchpoint:
printf_filtered ("Watchpoint %d: ", b->number);
print_expression (b->exp, gdb_stdout);
print_expression (b->exp, gdb_stdout);
break;
case bp_access_watchpoint:
- printf_filtered ("Hardware access(read/write) watchpoint %d: ",b->number);
+ printf_filtered ("Hardware access (read/write) watchpoint %d: ",b->number);
print_expression (b->exp, gdb_stdout);
break;
case bp_breakpoint:
printf_filtered ("Hardware assisted breakpoint %d", b->number);
say_where = 1;
break;
+ case bp_catch_load:
+ case bp_catch_unload:
+ printf_filtered ("Catchpoint %d (%s %s)",
+ b->number,
+ (b->type == bp_catch_load) ? "load" : "unload",
+ (b->dll_pathname != NULL) ? b->dll_pathname : "<any library>");
+ break;
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ printf_filtered ("Catchpoint %d (%s)",
+ b->number,
+ (b->type == bp_catch_fork) ? "fork" : "vfork");
+ break;
+ case bp_catch_exec:
+ printf_filtered ("Catchpoint %d (exec)",
+ b->number);
+ break;
+ case bp_catch_catch:
+ case bp_catch_throw:
+ printf_filtered ("Catchpoint %d (%s)",
+ b->number,
+ (b->type == bp_catch_catch) ? "catch" : "throw");
+ break;
+
case bp_until:
case bp_finish:
case bp_longjmp:
if (b->source_file)
printf_filtered (": file %s, line %d.",
b->source_file, b->line_number);
+ TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, b, 1));
+ TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos));
}
printf_filtered ("\n");
}
int toklen;
resolve_sal_pc (&sals.sals[i]);
+
+ /* It's possible for the PC to be nonzero, but still an illegal
+ value on some targets.
+
+ For example, on HP-UX if you start gdb, and before running the
+ inferior you try to set a breakpoint on a shared library function
+ "foo" where the inferior doesn't call "foo" directly but does
+ pass its address to another function call, then we do find a
+ minimal symbol for the "foo", but it's address is invalid.
+ (Appears to be an index into a table that the loader sets up
+ when the inferior is run.)
+
+ Give the target a chance to bless sals.sals[i].pc before we
+ try to make a breakpoint for it. */
+ if (PC_REQUIRES_RUN_BEFORE_USE(sals.sals[i].pc))
+ {
+ error ("Cannot break on %s without a running program.", addr_start);
+ }
tok = arg;
do_cleanups (old_chain);
}
+static void
+break_at_finish_at_depth_command_1 (arg, flag, from_tty)
+ char *arg;
+ int flag;
+ int from_tty;
+{
+ struct frame_info *frame;
+ CORE_ADDR low, high, selected_pc = 0;
+ char *extra_args, *level_arg, *addr_string;
+ int extra_args_len = 0, if_arg = 0;
+
+ if (!arg ||
+ (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
+ {
+
+ if (default_breakpoint_valid)
+ {
+ if (selected_frame)
+ {
+ selected_pc = selected_frame->pc;
+ if (arg)
+ if_arg = 1;
+ }
+ else
+ error ("No selected frame.");
+ }
+ else
+ error ("No default breakpoint address now.");
+ }
+ else
+ {
+ extra_args = strchr (arg, ' ');
+ if (extra_args)
+ {
+ extra_args++;
+ extra_args_len = strlen (extra_args);
+ level_arg = (char *) xmalloc (extra_args - arg);
+ strncpy (level_arg, arg, extra_args - arg - 1);
+ level_arg[extra_args - arg - 1] = '\0';
+ }
+ else
+ {
+ level_arg = (char *) xmalloc (strlen (arg) + 1);
+ strcpy (level_arg, arg);
+ }
+
+ frame = parse_frame_specification (level_arg);
+ if (frame)
+ selected_pc = frame->pc;
+ else
+ selected_pc = 0;
+ }
+ if (if_arg)
+ {
+ extra_args = arg;
+ extra_args_len = strlen (arg);
+ }
+
+ if (selected_pc)
+ {
+ if (find_pc_partial_function(selected_pc, (char **)NULL, &low, &high))
+ {
+ addr_string = (char *) xmalloc (26 + extra_args_len);
+ if (extra_args_len)
+ sprintf (addr_string, "*0x%x %s", high, extra_args);
+ else
+ sprintf (addr_string, "*0x%x", high);
+ break_command_1 (addr_string, flag, from_tty);
+ free (addr_string);
+ }
+ else
+ error ("No function contains the specified address");
+ }
+ else
+ error ("Unable to set breakpoint at procedure exit");
+}
+
+
+static void
+break_at_finish_command_1 (arg, flag, from_tty)
+ char *arg;
+ int flag;
+ int from_tty;
+{
+ char *addr_string, *break_string, *beg_addr_string;
+ CORE_ADDR low, high;
+ struct symtabs_and_lines sals;
+ struct symtab_and_line sal;
+ struct cleanup *old_chain;
+ char *extra_args;
+ int extra_args_len = 0;
+ int i, if_arg = 0;
+
+ if (!arg ||
+ (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
+ {
+ if (default_breakpoint_valid)
+ {
+ if (selected_frame)
+ {
+ addr_string = (char *) xmalloc (15);
+ sprintf (addr_string, "*0x%x", selected_frame->pc);
+ if (arg)
+ if_arg = 1;
+ }
+ else
+ error ("No selected frame.");
+ }
+ else
+ error ("No default breakpoint address now.");
+ }
+ else
+ {
+ addr_string = (char *) xmalloc (strlen (arg) + 1);
+ strcpy (addr_string, arg);
+ }
+
+ if (if_arg)
+ {
+ extra_args = arg;
+ extra_args_len = strlen (arg);
+ }
+ else
+ if (arg)
+ {
+ /* get the stuff after the function name or address */
+ extra_args = strchr (arg, ' ');
+ if (extra_args)
+ {
+ extra_args++;
+ extra_args_len = strlen (extra_args);
+ }
+ }
+
+ sals.sals = NULL;
+ sals.nelts = 0;
+
+ beg_addr_string = addr_string;
+ sals = decode_line_1 (&addr_string, 1, (struct symtab *)NULL, 0,
+ (char ***)NULL);
+
+ free (beg_addr_string);
+ old_chain = make_cleanup (free, sals.sals);
+ for (i = 0; (i < sals.nelts); i++)
+ {
+ sal = sals.sals[i];
+ if (find_pc_partial_function (sal.pc, (char **)NULL, &low, &high))
+ {
+ break_string = (char *) xmalloc (extra_args_len + 26);
+ if (extra_args_len)
+ sprintf (break_string, "*0x%x %s", high, extra_args);
+ else
+ sprintf (break_string, "*0x%x", high);
+ break_command_1 (break_string, flag, from_tty);
+ free(break_string);
+ }
+ else
+ error ("No function contains the specified address");
+ }
+ if (sals.nelts > 1)
+ {
+ printf_filtered ("Multiple breakpoints were set.\n");
+ printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
+ }
+ do_cleanups(old_chain);
+}
+
+
/* Helper function for break_command_1 and disassemble_command. */
void
break_command_1 (arg, 0, from_tty);
}
-static void
+void
+break_at_finish_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ break_at_finish_command_1 (arg, 0, from_tty);
+}
+
+void
+break_at_finish_at_depth_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ break_at_finish_at_depth_command_1 (arg, 0, from_tty);
+}
+
+void
tbreak_command (arg, from_tty)
char *arg;
int from_tty;
break_command_1 (arg, BP_TEMPFLAG, from_tty);
}
+void
+tbreak_at_finish_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty);
+}
+
static void
hbreak_command (arg, from_tty)
char *arg;
break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
}
+static void
+stop_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ printf_filtered ("Specify the type of breakpoint to set.\n\
+Usage: stop in <function | address>\n\
+ stop at <line>\n");
+}
+
+static void
+stopin_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ int badInput = 0;
+
+ if (arg == (char *)NULL)
+ badInput = 1;
+ else if (*arg != '*')
+ {
+ char *argptr = arg;
+ int hasColon = 0;
+
+ /* look for a ':'. If this is a line number specification, then say
+ it is bad, otherwise, it should be an address or function/method
+ name */
+ while (*argptr && !hasColon)
+ {
+ hasColon = (*argptr == ':');
+ argptr++;
+ }
+
+ if (hasColon)
+ badInput = (*argptr != ':'); /* Not a class::method */
+ else
+ badInput = isdigit(*arg); /* a simple line number */
+ }
+
+ if (badInput)
+ printf_filtered("Usage: stop in <function | address>\n");
+ else
+ break_command_1 (arg, 0, from_tty);
+}
+
+static void
+stopat_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ int badInput = 0;
+
+ if (arg == (char *)NULL || *arg == '*') /* no line number */
+ badInput = 1;
+ else
+ {
+ char *argptr = arg;
+ int hasColon = 0;
+
+ /* look for a ':'. If there is a '::' then get out, otherwise
+ it is probably a line number. */
+ while (*argptr && !hasColon)
+ {
+ hasColon = (*argptr == ':');
+ argptr++;
+ }
+
+ if (hasColon)
+ badInput = (*argptr == ':'); /* we have class::method */
+ else
+ badInput = !isdigit(*arg); /* not a line number */
+ }
+
+ if (badInput)
+ printf_filtered("Usage: stop at <line>\n");
+ else
+ break_command_1 (arg, 0, from_tty);
+}
+
/* ARGSUSED */
-/* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write)
-*/
+/* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) */
static void
watch_command_1 (arg, accessflag, from_tty)
char *arg;
if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint)
error ("Target resources have been allocated for other types of watchpoints.");
}
+
+#if defined(HPUXHPPA)
+ /* ??rehrauer: DTS #CHFts23014 notes that on HP-UX if you set a h/w
+ watchpoint before the "run" command, the inferior dies with a e.g.,
+ SIGILL once you start it. I initially believed this was due to a
+ bad interaction between page protection traps and the initial
+ startup sequence by the dynamic linker.
+
+ However, I tried avoiding that by having HP-UX's implementation of
+ TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid
+ yet, which forced slow watches before a "run" or "attach", and it
+ still fails somewhere in the startup code.
+
+ Until I figure out what's happening, I'm disallowing watches altogether
+ before the "run" or "attach" command. We'll tell the user they must
+ set watches after getting the program started. */
+ if (! target_has_execution)
+ {
+ warning ("can't do that without a running program; try \"break main\", \"run\" first");
+ return;
+ }
+#endif /* HPUXHPPA */
/* Now set up the breakpoint. */
b = set_raw_breakpoint (sal);
in hardware. If the watchpoint can not be handled
in hardware return zero. */
+#if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
+#define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_size) \
+ ((byte_size) <= (REGISTER_SIZE))
+#endif
+
static int
can_use_hardware_watchpoint (v)
struct value *v;
{
int found_memory_cnt = 0;
+
+ /* Did the user specifically forbid us to use hardware watchpoints? */
+ if (! can_use_hw_watchpoints)
+ return 0;
/* Make sure all the intermediate values are in memory. Also make sure
we found at least one memory expression. Guards against watch 0x12345,
{
if (v->lval == lval_memory)
{
- if (TYPE_LENGTH (VALUE_TYPE (v)) <= REGISTER_SIZE)
+ if (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (TYPE_LENGTH (VALUE_TYPE (v))))
found_memory_cnt++;
}
else if (v->lval != not_lval && v->modifiable == 0)
struct symtab_and_line sal;
};
-#if 0
+/* Not really used -- invocation in handle_gnu_4_16_catch_command
+ had been commented out in the v.4.16 sources, and stays
+ disabled there now because "catch NAME" syntax isn't allowed.
+ pai/1997-07-11 */
/* This isn't used; I don't know what it was for. */
/* For each catch clause identified in ARGS, run FUNCTION
with that clause as an argument. */
while (*p == ' ' || *p == '\t') p++;
}
}
-#endif /* 0 */
/* This shares a lot of code with `print_frame_label_vars' from stack.c. */
if (sal_chain && this_level_only)
break;
- /* After handling the function's top-level block, stop.
- Don't continue to its superblock, the block of
- per-file symbols. */
- if (BLOCK_FUNCTION (block))
- break;
- block = BLOCK_SUPERBLOCK (block);
+ /* After handling the function's top-level block, stop.
+ Don't continue to its superblock, the block of
+ per-file symbols. */
+ if (BLOCK_FUNCTION (block))
+ break;
+ block = BLOCK_SUPERBLOCK (block);
+ }
+
+ if (sal_chain)
+ {
+ struct sal_chain *tmp_chain;
+
+ /* Count the number of entries. */
+ for (index = 0, tmp_chain = sal_chain; tmp_chain;
+ tmp_chain = tmp_chain->next)
+ index++;
+
+ sals.nelts = index;
+ sals.sals = (struct symtab_and_line *)
+ xmalloc (index * sizeof (struct symtab_and_line));
+ for (index = 0; sal_chain; sal_chain = sal_chain->next, index++)
+ sals.sals[index] = sal_chain->sal;
+ }
+
+ return sals;
+}
+
+static void
+ep_skip_leading_whitespace (s)
+ char ** s;
+{
+ if ((s == NULL) || (*s == NULL))
+ return;
+ while (isspace(**s))
+ *s += 1;
+}
+
+/* This function examines a string, and attempts to find a token
+ that might be an event name in the leading characters. If a
+ possible match is found, a pointer to the last character of
+ the token is returned. Else, NULL is returned. */
+static char *
+ep_find_event_name_end (arg)
+ char * arg;
+{
+ char * s = arg;
+ char * event_name_end = NULL;
+
+ /* If we could depend upon the presense of strrpbrk, we'd use that... */
+ if (arg == NULL)
+ return NULL;
+
+ /* We break out of the loop when we find a token delimiter.
+ Basically, we're looking for alphanumerics and underscores;
+ anything else delimites the token. */
+ while (*s != '\0')
+ {
+ if (! isalnum(*s) && (*s != '_'))
+ break;
+ event_name_end = s;
+ s++;
+ }
+
+ return event_name_end;
+}
+
+
+/* This function attempts to parse an optional "if <cond>" clause
+ from the arg string. If one is not found, it returns NULL.
+
+ Else, it returns a pointer to the condition string. (It does not
+ attempt to evaluate the string against a particular block.) And,
+ it updates arg to point to the first character following the parsed
+ if clause in the arg string. */
+static char *
+ep_parse_optional_if_clause (arg)
+ char ** arg;
+{
+ char * cond_string;
+
+ if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace((*arg)[2]))
+ return NULL;
+
+ /* Skip the "if" keyword. */
+ (*arg) += 2;
+
+ /* Skip any extra leading whitespace, and record the start of the
+ condition string. */
+ ep_skip_leading_whitespace (arg);
+ cond_string = *arg;
+
+ /* Assume that the condition occupies the remainder of the arg string. */
+ (*arg) += strlen (cond_string);
+
+ return cond_string;
+}
+
+/* This function attempts to parse an optional filename from the arg
+ string. If one is not found, it returns NULL.
+
+ Else, it returns a pointer to the parsed filename. (This function
+ makes no attempt to verify that a file of that name exists, or is
+ accessible.) And, it updates arg to point to the first character
+ following the parsed filename in the arg string.
+
+ Note that clients needing to preserve the returned filename for
+ future access should copy it to their own buffers. */
+static char *
+ep_parse_optional_filename (arg)
+ char ** arg;
+{
+ static char filename [1024];
+ char * arg_p = *arg;
+ int i;
+ char c;
+
+ if ((*arg_p == '\0') || isspace (*arg_p))
+ return NULL;
+
+ for (i=0; ; i++)
+ {
+ c = *arg_p;
+ if (isspace (c))
+ c = '\0';
+ filename[i] = c;
+ if (c == '\0')
+ break;
+ arg_p++;
+ }
+ *arg = arg_p;
+
+ return filename;
+}
+
+/* Commands to deal with catching events, such as signals, exceptions,
+ process start/exit, etc. */
+
+typedef enum {catch_fork, catch_vfork} catch_fork_kind;
+
+static void
+catch_fork_command_1 (fork_kind, arg, tempflag, from_tty)
+ catch_fork_kind fork_kind;
+ char * arg;
+ int tempflag;
+ int from_tty;
+{
+ char * cond_string = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ /* The allowed syntax is:
+ catch [v]fork
+ catch [v]fork if <cond>
+
+ First, check if there's an if clause. */
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ /* If this target supports it, create a fork or vfork catchpoint
+ and enable reporting of such events. */
+ switch (fork_kind) {
+ case catch_fork :
+ create_fork_event_catchpoint (tempflag, cond_string);
+ break;
+ case catch_vfork :
+ create_vfork_event_catchpoint (tempflag, cond_string);
+ break;
+ default :
+ error ("unsupported or unknown fork kind; cannot catch it");
+ break;
+ }
+}
+
+static void
+catch_exec_command_1 (arg, tempflag, from_tty)
+ char * arg;
+ int tempflag;
+ int from_tty;
+{
+ char * cond_string = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ /* The allowed syntax is:
+ catch exec
+ catch exec if <cond>
+
+ First, check if there's an if clause. */
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ /* If this target supports it, create an exec catchpoint
+ and enable reporting of such events. */
+ create_exec_event_catchpoint (tempflag, cond_string);
+}
+
+#if defined(SOLIB_ADD)
+static void
+catch_load_command_1 (arg, tempflag, from_tty)
+ char * arg;
+ int tempflag;
+ int from_tty;
+{
+ char * dll_pathname = NULL;
+ char * cond_string = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ /* The allowed syntax is:
+ catch load
+ catch load if <cond>
+ catch load <filename>
+ catch load <filename> if <cond>
+
+ The user is not allowed to specify the <filename> after an
+ if clause.
+
+ We'll ignore the pathological case of a file named "if".
+
+ First, check if there's an if clause. If so, then there
+ cannot be a filename. */
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ /* If there was an if clause, then there cannot be a filename.
+ Else, there might be a filename and an if clause. */
+ if (cond_string == NULL)
+ {
+ dll_pathname = ep_parse_optional_filename (&arg);
+ ep_skip_leading_whitespace (&arg);
+ cond_string = ep_parse_optional_if_clause (&arg);
}
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ /* Create a load breakpoint that only triggers when a load of
+ the specified dll (or any dll, if no pathname was specified)
+ occurs. */
+ SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string);
+}
+
+static void
+catch_unload_command_1 (arg, tempflag, from_tty)
+ char * arg;
+ int tempflag;
+ int from_tty;
+{
+ char * dll_pathname = NULL;
+ char * cond_string = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ /* The allowed syntax is:
+ catch unload
+ catch unload if <cond>
+ catch unload <filename>
+ catch unload <filename> if <cond>
+
+ The user is not allowed to specify the <filename> after an
+ if clause.
+
+ We'll ignore the pathological case of a file named "if".
+
+ First, check if there's an if clause. If so, then there
+ cannot be a filename. */
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ /* If there was an if clause, then there cannot be a filename.
+ Else, there might be a filename and an if clause. */
+ if (cond_string == NULL)
+ {
+ dll_pathname = ep_parse_optional_filename (&arg);
+ ep_skip_leading_whitespace (&arg);
+ cond_string = ep_parse_optional_if_clause (&arg);
+ }
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ /* Create an unload breakpoint that only triggers when an unload of
+ the specified dll (or any dll, if no pathname was specified)
+ occurs. */
+ SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string);
+}
+#endif /* SOLIB_ADD */
- if (sal_chain)
+/* Commands to deal with catching exceptions. */
+
+/* Set a breakpoint at the specified callback routine for an
+ exception event callback */
+
+static void
+create_exception_catchpoint (tempflag, cond_string, ex_event, sal)
+ int tempflag;
+ char * cond_string;
+ enum exception_event_kind ex_event;
+ struct symtab_and_line * sal;
+{
+ struct breakpoint * b;
+ int i;
+ int thread = -1; /* All threads. */
+
+ if (!sal) /* no exception support? */
+ return;
+
+ b = set_raw_breakpoint (*sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+ b->addr_string = NULL;
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+ switch (ex_event)
{
- struct sal_chain *tmp_chain;
+ case EX_EVENT_THROW:
+ b->type = bp_catch_throw;
+ break;
+ case EX_EVENT_CATCH:
+ b->type = bp_catch_catch;
+ break;
+ default: /* error condition */
+ b->type = bp_none;
+ b->enable = disabled;
+ error ("Internal error -- invalid catchpoint kind");
+ }
+ mention (b);
+}
- /* Count the number of entries. */
- for (index = 0, tmp_chain = sal_chain; tmp_chain;
- tmp_chain = tmp_chain->next)
- index++;
+/* Deal with "catch catch" and "catch throw" commands */
- sals.nelts = index;
- sals.sals = (struct symtab_and_line *)
- xmalloc (index * sizeof (struct symtab_and_line));
- for (index = 0; sal_chain; sal_chain = sal_chain->next, index++)
- sals.sals[index] = sal_chain->sal;
+static void
+catch_exception_command_1 (ex_event, arg, tempflag, from_tty)
+ enum exception_event_kind ex_event;
+ char * arg;
+ int tempflag;
+ int from_tty;
+{
+ char * cond_string = NULL;
+ struct symtab_and_line * sal = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ if ((ex_event != EX_EVENT_THROW) &&
+ (ex_event != EX_EVENT_CATCH))
+ error ("Unsupported or unknown exception event; cannot catch it");
+
+ /* See if we can find a callback routine */
+ sal = target_enable_exception_callback (ex_event, 1);
+
+ if (sal)
+ {
+ /* We have callbacks from the runtime system for exceptions.
+ Set a breakpoint on the sal found, if no errors */
+ if (sal != (struct symtab_and_line *) -1)
+ create_exception_catchpoint (tempflag, cond_string, ex_event, sal);
+ else
+ return; /* something went wrong with setting up callbacks */
+ }
+ else
+ {
+ /* No callbacks from runtime system for exceptions.
+ Try GNU C++ exception breakpoints using labels in debug info. */
+ if (ex_event == EX_EVENT_CATCH)
+ {
+ handle_gnu_4_16_catch_command (arg, tempflag, from_tty);
+ }
+ else if (ex_event == EX_EVENT_THROW)
+ {
+ /* Set a breakpoint on __raise_exception () */
+
+ fprintf_filtered (gdb_stderr, "Unsupported with this platform/compiler combination.\n");
+ fprintf_filtered (gdb_stderr, "Perhaps you can achieve the effect you want by setting\n");
+ fprintf_filtered (gdb_stderr, "a breakpoint on __raise_exception().\n");
+ }
}
+}
- return sals;
+/* Cover routine to allow wrapping target_enable_exception_catchpoints
+ inside a catch_errors */
+
+static int
+cover_target_enable_exception_callback (arg)
+ PTR arg;
+{
+ args_for_catchpoint_enable *args = arg;
+ struct symtab_and_line *sal;
+ sal = target_enable_exception_callback (args->kind, args->enable);
+ if (sal == NULL)
+ return 0;
+ else if (sal == (struct symtab_and_line *) -1)
+ return -1;
+ else
+ return 1; /*is valid*/
}
-/* Commands to deal with catching exceptions. */
+
+
+/* This is the original v.4.16 and earlier version of the
+ catch_command_1() function. Now that other flavours of "catch"
+ have been introduced, and since exception handling can be handled
+ in other ways (through target ops) also, this is used only for the
+ GNU C++ exception handling system.
+ Note: Only the "catch" flavour of GDB 4.16 is handled here. The
+ "catch NAME" is now no longer allowed in catch_command_1(). Also,
+ there was no code in GDB 4.16 for "catch throw".
+
+ Called from catch_exception_command_1 () */
+
static void
-catch_command_1 (arg, tempflag, from_tty)
+handle_gnu_4_16_catch_command (arg, tempflag, from_tty)
char *arg;
int tempflag;
int from_tty;
{
/* Grab selected catch clauses. */
error ("catch NAME not implemented");
+
#if 0
+ /* Not sure why this code has been disabled. I'm leaving
+ it disabled. We can never come here now anyway
+ since we don't allow the "catch NAME" syntax.
+ pai/1997-07-11 */
+
/* This isn't used; I don't know what it was for. */
sals = map_catch_names (arg, catch_breakpoint);
#endif
b = set_raw_breakpoint (sal);
set_breakpoint_count (breakpoint_count + 1);
b->number = breakpoint_count;
- b->type = bp_breakpoint;
+ b->type = bp_breakpoint; /* Important -- this is an ordinary breakpoint.
+ For platforms with callback support for exceptions,
+ create_exception_catchpoint() will create special
+ bp types (bp_catch_catch and bp_catch_throw), and
+ there is code in insert_breakpoints() and elsewhere
+ that depends on that. */
+
b->cond = cond;
b->enable = enabled;
b->disposition = tempflag ? del : donttouch;
free ((PTR)sals.sals);
}
+#if 0
+/* This creates a temporary internal breakpoint
+ just to placate infrun */
+static struct breakpoint *
+create_temp_exception_breakpoint (pc)
+ CORE_ADDR pc;
+{
+ struct symtab_and_line sal;
+ struct breakpoint *b;
+
+ INIT_SAL(&sal);
+ sal.pc = pc;
+ sal.symtab = NULL;
+ sal.line = 0;
+
+ b = set_raw_breakpoint (sal);
+ if (!b)
+ error ("Internal error -- couldn't set temp exception breakpoint");
+
+ b->type = bp_breakpoint;
+ b->disposition = del;
+ b->enable = enabled;
+ b->silent = 1;
+ b->number = internal_breakpoint_number--;
+ return b;
+}
+#endif
+
+static void
+catch_command_1 (arg, tempflag, from_tty)
+ char *arg;
+ int tempflag;
+ int from_tty;
+{
+
+ /* The first argument may be an event name, such as "start" or "load".
+ If so, then handle it as such. If it doesn't match an event name,
+ then attempt to interpret it as an exception name. (This latter is
+ the v4.16-and-earlier GDB meaning of the "catch" command.)
+
+ First, try to find the bounds of what might be an event name. */
+ char * arg1_start = arg;
+ char * arg1_end;
+ int arg1_length;
+
+ if (arg1_start == NULL)
+ {
+ /* Old behaviour was to use pre-v-4.16 syntax */
+ /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
+ /* return; */
+ /* Now, this is not allowed */
+ error ("Catch requires an event name.");
+
+ }
+ arg1_end = ep_find_event_name_end (arg1_start);
+ if (arg1_end == NULL)
+ error ("catch requires an event");
+ arg1_length = arg1_end + 1 - arg1_start;
+
+ /* Try to match what we found against known event names. */
+ if (strncmp (arg1_start, "signal", arg1_length) == 0)
+ {
+ error ("Catch of signal not yet implemented");
+ }
+ else if (strncmp (arg1_start, "catch", arg1_length) == 0)
+ {
+ catch_exception_command_1 (EX_EVENT_CATCH, arg1_end+1, tempflag, from_tty);
+ }
+ else if (strncmp (arg1_start, "throw", arg1_length) == 0)
+ {
+ catch_exception_command_1 (EX_EVENT_THROW, arg1_end+1, tempflag, from_tty);
+ }
+ else if (strncmp (arg1_start, "thread_start", arg1_length) == 0)
+ {
+ error ("Catch of thread_start not yet implemented");
+ }
+ else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0)
+ {
+ error ("Catch of thread_exit not yet implemented");
+ }
+ else if (strncmp (arg1_start, "thread_join", arg1_length) == 0)
+ {
+ error ("Catch of thread_join not yet implemented");
+ }
+ else if (strncmp (arg1_start, "start", arg1_length) == 0)
+ {
+ error ("Catch of start not yet implemented");
+ }
+ else if (strncmp (arg1_start, "exit", arg1_length) == 0)
+ {
+ error ("Catch of exit not yet implemented");
+ }
+ else if (strncmp (arg1_start, "fork", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_FORK_CATCHPOINT)
+ catch_fork_command_1 (catch_fork, arg1_end+1, tempflag, from_tty);
+#else
+ error ("Catch of fork not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "vfork", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_VFORK_CATCHPOINT)
+ catch_fork_command_1 (catch_vfork, arg1_end+1, tempflag, from_tty);
+#else
+ error ("Catch of vfork not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "exec", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
+ catch_exec_command_1 (arg1_end+1, tempflag, from_tty);
+#else
+ error ("Catch of exec not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "load", arg1_length) == 0)
+ {
+#if defined(SOLIB_ADD)
+ catch_load_command_1 (arg1_end+1, tempflag, from_tty);
+#else
+ error ("Catch of load not implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "unload", arg1_length) == 0)
+ {
+#if defined(SOLIB_ADD)
+ catch_unload_command_1 (arg1_end+1, tempflag, from_tty);
+#else
+ error ("Catch of load not implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "stop", arg1_length) == 0)
+ {
+ error ("Catch of stop not yet implemented");
+ }
+
+ /* This doesn't appear to be an event name */
+
+ else
+ {
+ /* Pre-v.4.16 behaviour was to treat the argument
+ as the name of an exception */
+ /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
+ /* Now this is not allowed */
+ error ("Unknown event kind specified for catch");
+
+ }
+}
+
/* Used by the gui, could be made a worker for other things. */
struct breakpoint *
catch_command_1 (arg, 0, from_tty);
}
\f
+
+static void
+tcatch_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ catch_command_1 (arg, 1, from_tty);
+}
+
+
static void
clear_command (arg, from_tty)
char *arg;
int from_tty;
{
register struct breakpoint *b, *b1;
+ int default_match;
struct symtabs_and_lines sals;
struct symtab_and_line sal;
register struct breakpoint *found;
if (arg)
{
sals = decode_line_spec (arg, 1);
+ default_match = 0;
}
else
{
INIT_SAL (&sal); /* initialize to zeroes */
sal.line = default_breakpoint_line;
sal.symtab = default_breakpoint_symtab;
+ sal.pc = default_breakpoint_address;
if (sal.symtab == 0)
error ("No source file specified.");
sals.sals[0] = sal;
sals.nelts = 1;
+
+ default_match = 1;
}
+ /* For each line spec given, delete bps which correspond
+ to it. We do this in two loops: the first loop looks at
+ the initial bp(s) in the chain which should be deleted,
+ the second goes down the rest of the chain looking ahead
+ one so it can take those bps off the chain without messing
+ up the chain. */
+
+
for (i = 0; i < sals.nelts; i++)
{
/* If exact pc given, clear bpts at that pc.
- But if sal.pc is zero, clear all bpts on specified line. */
+ If line given (pc == 0), clear all bpts on specified line.
+ If defaulting, clear all bpts on default line
+ or at default pc.
+
+ defaulting sal.pc != 0 tests to do
+
+ 0 1 pc
+ 1 1 pc _and_ line
+ 0 0 line
+ 1 0 <can't happen> */
+
sal = sals.sals[i];
found = (struct breakpoint *) 0;
+
while (breakpoint_chain
- && (sal.pc
- ? (breakpoint_chain->address == sal.pc &&
- (overlay_debugging == 0 ||
- breakpoint_chain->section == sal.section))
- : (breakpoint_chain->source_file != NULL
- && sal.symtab != NULL
- && STREQ (breakpoint_chain->source_file,
- sal.symtab->filename)
- && breakpoint_chain->line_number == sal.line)))
+ /* Why don't we check here that this is not
+ a watchpoint, etc., as we do below?
+ I can't make it fail, but don't know
+ what's stopping the failure: a watchpoint
+ of the same address as "sal.pc" should
+ wind up being deleted. */
+
+ && ( ((sal.pc && (breakpoint_chain->address == sal.pc)) &&
+ (overlay_debugging == 0 ||
+ breakpoint_chain->section == sal.section))
+ || ((default_match || (0 == sal.pc))
+ && breakpoint_chain->source_file != NULL
+ && sal.symtab != NULL
+ && STREQ (breakpoint_chain->source_file, sal.symtab->filename)
+ && breakpoint_chain->line_number == sal.line)))
+
{
b1 = breakpoint_chain;
breakpoint_chain = b1->next;
}
ALL_BREAKPOINTS (b)
- while (b->next
- && b->next->type != bp_watchpoint
- && b->next->type != bp_hardware_watchpoint
- && b->next->type != bp_read_watchpoint
- && b->next->type != bp_access_watchpoint
- && (sal.pc
- ? (b->next->address == sal.pc &&
- (overlay_debugging == 0 ||
- b->next->section == sal.section))
- : (b->next->source_file != NULL
- && sal.symtab != NULL
- && STREQ (b->next->source_file, sal.symtab->filename)
- && b->next->line_number == sal.line)))
+
+ while (b->next
+ && b->next->type != bp_none
+ && b->next->type != bp_watchpoint
+ && b->next->type != bp_hardware_watchpoint
+ && b->next->type != bp_read_watchpoint
+ && b->next->type != bp_access_watchpoint
+ && ( ((sal.pc && (b->next->address == sal.pc)) &&
+ (overlay_debugging == 0 ||
+ b->next->section == sal.section))
+ || ((default_match || (0 == sal.pc))
+ && b->next->source_file != NULL
+ && sal.symtab != NULL
+ && STREQ (b->next->source_file, sal.symtab->filename)
+ && b->next->line_number == sal.line)))
+
+
{
b1 = b->next;
b->next = b1->next;
register struct breakpoint *b;
register bpstat bs;
+ if (bpt == NULL)
+ error ("Internal error (attempted to delete a NULL breakpoint)");
+
+
+ /* Has this bp already been deleted? This can happen because multiple
+ lists can hold pointers to bp's. bpstat lists are especial culprits.
+
+ One example of this happening is a watchpoint's scope bp. When the
+ scope bp triggers, we notice that the watchpoint is out of scope, and
+ delete it. We also delete its scope bp. But the scope bp is marked
+ "auto-deleting", and is already on a bpstat. That bpstat is then
+ checked for auto-deleting bp's, which are deleted.
+
+ A real solution to this problem might involve reference counts in bp's,
+ and/or giving them pointers back to their referencing bpstat's, and
+ teaching delete_breakpoint to only free a bp's storage when no more
+ references were extent. A cheaper bandaid was chosen. */
+ if (bpt->type == bp_none)
+ return;
+
if (delete_breakpoint_hook)
delete_breakpoint_hook (bpt);
if (bpt->inserted)
- remove_breakpoint (bpt);
+ remove_breakpoint (bpt, mark_uninserted);
if (breakpoint_chain == bpt)
breakpoint_chain = bpt->next;
+ /* If we have callback-style exception catchpoints, don't go through
+ the adjustments to the C++ runtime library etc. if the inferior
+ isn't actually running. target_enable_exception_callback for a
+ null target ops vector gives an undesirable error message, so we
+ check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
+ exceptions are supported in this way, it's OK for now. FIXME */
+ if (ep_is_exception_catchpoint (bpt) && target_has_execution)
+ {
+ static char message1[] = "Error in deleting catchpoint %d:\n";
+ static char message[sizeof (message1) + 30];
+ args_for_catchpoint_enable args;
+
+ sprintf (message, message1, bpt->number); /* Format possible error msg */
+ args.kind = bpt->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW;
+ args.enable = 0;
+ catch_errors (cover_target_enable_exception_callback, &args,
+ message, RETURN_MASK_ALL);
+ }
+
+
ALL_BREAKPOINTS (b)
if (b->next == bpt)
{
break;
}
+ /* Before turning off the visuals for the bp, check to see that
+ there are no other bps at the same address. */
+ if (tui_version)
+ {
+ int clearIt;
+
+ ALL_BREAKPOINTS (b)
+ {
+ clearIt = (b->address != bpt->address);
+ if (!clearIt)
+ break;
+ }
+
+ if (clearIt)
+ {
+ TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, bpt, 0));
+ TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos));
+ }
+ }
+
check_duplicates (bpt->address, bpt->section);
/* If this breakpoint was inserted, and there is another breakpoint
at the same address, we need to insert the other breakpoint. */
if (bpt->inserted
&& bpt->type != bp_hardware_watchpoint
&& bpt->type != bp_read_watchpoint
- && bpt->type != bp_access_watchpoint)
+ && bpt->type != bp_access_watchpoint
+ && bpt->type != bp_catch_fork
+ && bpt->type != bp_catch_vfork
+ && bpt->type != bp_catch_exec)
{
ALL_BREAKPOINTS (b)
if (b->address == bpt->address
&& b->section == bpt->section
&& !b->duplicate
&& b->enable != disabled
- && b->enable != shlib_disabled)
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled)
{
int val;
val = target_insert_breakpoint (b->address, b->shadow_contents);
value_free (bpt->val);
if (bpt->source_file != NULL)
free (bpt->source_file);
+ if (bpt->dll_pathname != NULL)
+ free (bpt->dll_pathname);
+ if (bpt->triggered_dll_pathname != NULL)
+ free (bpt->triggered_dll_pathname);
+ if (bpt->exec_pathname != NULL)
+ free (bpt->exec_pathname);
/* Be sure no bpstat's are pointing at it after it's been freed. */
/* FIXME, how can we find all bpstat's?
We just check stop_bpstat for now. */
for (bs = stop_bpstat; bs; bs = bs->next)
if (bs->breakpoint_at == bpt)
- bs->breakpoint_at = NULL;
+ {
+ bs->breakpoint_at = NULL;
+
+ /* we'd call bpstat_clear_actions, but that free's stuff and due
+ to the multiple pointers pointing to one item with no
+ reference counts found anywhere through out the bpstat's (how
+ do you spell fragile?), we don't want to free things twice --
+ better a memory leak than a corrupt malloc pool! */
+ bs->commands = NULL;
+ bs->old_val = NULL;
+ }
+ /* On the chance that someone will soon try again to delete this same
+ bp, we mark it as deleted before freeing its storage. */
+ bpt->type = bp_none;
+
free ((PTR)bpt);
}
have to be deleted with an explicit breakpoint number argument. */
ALL_BREAKPOINTS (b)
{
- if (b->type != bp_call_dummy && b->number >= 0)
+ if (b->type != bp_call_dummy &&
+ b->type != bp_shlib_event &&
+ b->number >= 0)
breaks_to_delete = 1;
}
{
ALL_BREAKPOINTS_SAFE (b, temp)
{
- if (b->type != bp_call_dummy && b->number >= 0)
+ if (b->type != bp_call_dummy &&
+ b->type != bp_shlib_event &&
+ b->number >= 0)
delete_breakpoint (b);
}
}
static int
breakpoint_re_set_one (bint)
- char *bint;
+ PTR bint;
{
struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */
struct value *mark;
switch (b->type)
{
+ case bp_none:
+ warning ("attempted to reset apparently deleted breakpoint #%d?\n", b->number);
+ return 0;
case bp_breakpoint:
case bp_hardware_breakpoint:
+ case bp_catch_load:
+ case bp_catch_unload:
if (b->addr_string == NULL)
{
/* Anything without a string can't be re-set. */
strlen (sals.sals[i].symtab->filename));
b->line_number = sals.sals[i].line;
b->address = sals.sals[i].pc;
- check_duplicates (b->address, b->section);
+
+ /* Used to check for duplicates here, but that can
+ cause trouble, as it doesn't check for disable
+ breakpoints. */
mention (b);
}
b->section = sals.sals[i].section;
b->enable = save_enable; /* Restore it, this worked. */
+
+
+ /* Now that this is re-enabled, check_duplicates
+ can be used. */
+ check_duplicates (b->address, b->section);
+
}
free ((PTR)sals.sals);
break;
mention (b);
value_free_to_mark (mark);
break;
-
+ case bp_catch_catch:
+ case bp_catch_throw:
+ break;
+ /* We needn't really do anything to reset these, since the mask
+ that requests them is unaffected by e.g., new libraries being
+ loaded. */
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
+ break;
+
default:
printf_filtered ("Deleting unknown breakpoint type %d\n", b->type);
/* fall through */
ALL_BREAKPOINTS_SAFE (b, temp)
{
sprintf (message, message1, b->number); /* Format possible error msg */
- catch_errors (breakpoint_re_set_one, (char *) b, message,
- RETURN_MASK_ALL);
+ catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL);
}
set_language (save_language);
input_radix = save_input_radix;
If from_tty is nonzero, it prints a message to that effect,
which ends with a period (no newline). */
+/* Reset the thread number of this breakpoint:
+
+ - If the breakpoint is for all threads, leave it as-is.
+ - Else, reset it to the current thread for inferior_pid. */
+void
+breakpoint_re_set_thread (b)
+ struct breakpoint * b;
+{
+ if (b->thread != -1)
+ {
+ if (in_thread_list (inferior_pid))
+ b->thread = pid_to_thread_id (inferior_pid);
+ }
+}
+
void
set_ignore_count (bptnum, count, from_tty)
int bptnum, count, from_tty;
ALL_BREAKPOINTS (bpt)
switch (bpt->type)
{
+ case bp_none:
+ warning ("attempted to disable apparently deleted breakpoint #%d?\n", bpt->number);
+ continue;
case bp_breakpoint:
+ case bp_catch_load:
+ case bp_catch_unload:
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
+ case bp_catch_catch:
+ case bp_catch_throw:
case bp_hardware_breakpoint:
case bp_watchpoint:
case bp_hardware_watchpoint:
if (bpt->exp_valid_block != NULL)
{
struct frame_info *fr =
- find_frame_addr_in_frame_chain (bpt->watchpoint_frame);
+
+ /* Ensure that we have the current frame. Else, this
+ next query may pessimistically be answered as, "No,
+ not within current scope". */
+ get_current_frame ();
+ fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame);
if (fr == NULL)
{
printf_filtered ("\
}
if (save_selected_frame_level >= 0)
- select_frame (save_selected_frame, save_selected_frame_level);
+ select_and_print_frame (save_selected_frame, save_selected_frame_level);
value_free_to_mark (mark);
}
if (modify_breakpoint_hook)
ALL_BREAKPOINTS (bpt)
switch (bpt->type)
{
+ case bp_none:
+ warning ("attempted to enable apparently deleted breakpoint #%d?\n", bpt->number);
+ continue;
case bp_breakpoint:
+ case bp_catch_load:
+ case bp_catch_unload:
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
+ case bp_catch_catch:
+ case bp_catch_throw:
case bp_hardware_breakpoint:
case bp_watchpoint:
case bp_hardware_watchpoint:
void
_initialize_breakpoint ()
{
+ struct cmd_list_element *c;
+
breakpoint_chain = 0;
/* Don't bother to call set_breakpoint_count. $bpnum isn't useful
before a breakpoint is set. */
add_com ("ignore", class_breakpoint, ignore_command,
"Set ignore-count of breakpoint number N to COUNT.\n\
Usage is `ignore N COUNT'.");
+ if (xdb_commands)
+ add_com_alias("bc", "ignore", class_breakpoint, 1);
add_com ("commands", class_breakpoint, commands_command,
"Set commands to be executed when a breakpoint is hit.\n\
Like \"break\" except the breakpoint is only temporary,\n\
so it will be deleted when hit. Equivalent to \"break\" followed\n\
by using \"enable delete\" on the breakpoint number.");
+ add_com("txbreak", class_breakpoint, tbreak_at_finish_command,
+ "Set temporary breakpoint at procedure exit. Either there should\n\
+be no argument or the argument must be a depth.\n");
add_com ("hbreak", class_breakpoint, hbreak_command,
"Set a hardware assisted breakpoint. Args like \"break\" command.\n\
This is used to cancel the effect of the \"disable\" command.\n\
With a subcommand you can enable temporarily.",
&enablelist, "enable ", 1, &cmdlist);
+ if (xdb_commands)
+ add_com("ab", class_breakpoint, enable_command,
+ "Enable some breakpoints.\n\
+Give breakpoint numbers (separated by spaces) as arguments.\n\
+With no subcommand, breakpoints are enabled until you command otherwise.\n\
+This is used to cancel the effect of the \"disable\" command.\n\
+With a subcommand you can enable temporarily.");
add_com_alias ("en", "enable", class_breakpoint, 1);
&disablelist, "disable ", 1, &cmdlist);
add_com_alias ("dis", "disable", class_breakpoint, 1);
add_com_alias ("disa", "disable", class_breakpoint, 1);
+ if (xdb_commands)
+ add_com("sb", class_breakpoint, disable_command,
+ "Disable some breakpoints.\n\
+Arguments are breakpoint numbers with spaces in between.\n\
+To disable all breakpoints, give no argument.\n\
+A disabled breakpoint is not forgotten, but has no effect until reenabled.");
add_cmd ("breakpoints", class_alias, disable_command,
"Disable some breakpoints.\n\
The \"unset\" command is also an alias for \"delete\".",
&deletelist, "delete ", 1, &cmdlist);
add_com_alias ("d", "delete", class_breakpoint, 1);
+ if (xdb_commands)
+ add_com ("db", class_breakpoint, delete_command,
+ "Delete some breakpoints.\n\
+Arguments are breakpoint numbers with spaces in between.\n\
+To delete all breakpoints, give no argument.\n");
add_cmd ("breakpoints", class_alias, delete_command,
"Delete some breakpoints or auto-display expressions.\n\
add_com_alias ("bre", "break", class_run, 1);
add_com_alias ("brea", "break", class_run, 1);
+ add_com("xbreak", class_breakpoint, break_at_finish_command,
+ concat("Set breakpoint at procedure exit. \n\
+Argument may be function name, or \"*\" and an address.\n\
+If function is specified, break at end of code for that function.\n\
+If an address is specified, break at the end of the function that contains \n\
+that exact address.\n",
+"With no arg, uses current execution address of selected stack frame.\n\
+This is useful for breaking on return to a stack frame.\n\
+\n\
+Multiple breakpoints at one place are permitted, and useful if conditional.\n\
+\n\
+Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL));
+ add_com_alias ("xb", "xbreak", class_breakpoint, 1);
+ add_com_alias ("xbr", "xbreak", class_breakpoint, 1);
+ add_com_alias ("xbre", "xbreak", class_breakpoint, 1);
+ add_com_alias ("xbrea", "xbreak", class_breakpoint, 1);
+
+ if (xdb_commands)
+ {
+ add_com_alias ("ba", "break", class_breakpoint, 1);
+ add_com_alias ("bu", "ubreak", class_breakpoint, 1);
+ add_com ("bx", class_breakpoint, break_at_finish_at_depth_command,
+ "Set breakpoint at procedure exit. Either there should\n\
+be no argument or the argument must be a depth.\n");
+ }
+
+ if (dbx_commands)
+ {
+ add_abbrev_prefix_cmd("stop", class_breakpoint, stop_command,
+ "Break in function/address or break at a line in the current file.",
+ &stoplist, "stop ", 1, &cmdlist);
+ add_cmd("in", class_breakpoint, stopin_command,
+ "Break in function or address.\n", &stoplist);
+ add_cmd("at", class_breakpoint, stopat_command,
+ "Break at a line in the current file.\n", &stoplist);
+ add_com("status", class_info, breakpoints_info,
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+The \"Type\" column indicates one of:\n\
+\tbreakpoint - normal breakpoint\n\
+\twatchpoint - watchpoint\n\
+The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
+breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
+address and file/line number respectively.\n\n",
+"Convenience variable \"$_\" and default examine address for \"x\"\n\
+are set to the address of the last breakpoint listed.\n\n\
+Convenience variable \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
+ }
+
add_info ("breakpoints", breakpoints_info,
concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
The \"Type\" column indicates one of:\n\
"Convenience variable \"$_\" and default examine address for \"x\"\n\
are set to the address of the last breakpoint listed.\n\n\
Convenience variable \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
+
+ if (xdb_commands)
+ add_com("lb", class_breakpoint, breakpoints_info,
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+The \"Type\" column indicates one of:\n\
+\tbreakpoint - normal breakpoint\n\
+\twatchpoint - watchpoint\n\
+The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
+breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
+address and file/line number respectively.\n\n",
+"Convenience variable \"$_\" and default examine address for \"x\"\n\
+are set to the address of the last breakpoint listed.\n\n\
+Convenience variable \"$bpnum\" contains the number of the last\n\
breakpoint set.", NULL));
#if MAINTENANCE_CMDS
#endif /* MAINTENANCE_CMDS */
add_com ("catch", class_breakpoint, catch_command,
- "Set breakpoints to catch exceptions that are raised.\n\
-Argument may be a single exception to catch, multiple exceptions\n\
-to catch, or the default exception \"default\". If no arguments\n\
-are given, breakpoints are set at all exception handlers catch clauses\n\
-within the current scope.\n\
-\n\
-A condition specified for the catch applies to all breakpoints set\n\
-with this command\n\
+ "Set catchpoints to catch events.\n\
+Raised signals may be caught:\n\
+\tcatch signal - all signals\n\
+\tcatch signal <signame> - a particular signal\n\
+Raised exceptions may be caught:\n\
+\tcatch throw - all exceptions, when thrown\n\
+\tcatch throw <exceptname> - a particular exception, when thrown\n\
+\tcatch catch - all exceptions, when caught\n\
+\tcatch catch <exceptname> - a particular exception, when caught\n\
+Thread or process events may be caught:\n\
+\tcatch thread_start - any threads, just after creation\n\
+\tcatch thread_exit - any threads, just before expiration\n\
+\tcatch thread_join - any threads, just after joins\n\
+Process events may be caught:\n\
+\tcatch start - any processes, just after creation\n\
+\tcatch exit - any processes, just before expiration\n\
+\tcatch fork - calls to fork()\n\
+\tcatch vfork - calls to vfork()\n\
+\tcatch exec - calls to exec()\n\
+Dynamically-linked library events may be caught:\n\
+\tcatch load - loads of any library\n\
+\tcatch load <libname> - loads of a particular library\n\
+\tcatch unload - unloads of any library\n\
+\tcatch unload <libname> - unloads of a particular library\n\
+The act of your program's execution stopping may also be caught:\n\
+\tcatch stop\n\n\
+C++ exceptions may be caught:\n\
+\tcatch throw - all exceptions, when thrown\n\
+\tcatch catch - all exceptions, when caught\n\
\n\
+Do \"help set follow-fork-mode\" for info on debugging your program\n\
+after a fork or vfork is caught.\n\n\
Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
+
+ add_com ("tcatch", class_breakpoint, tcatch_command,
+ "Set temporary catchpoints to catch events.\n\
+Args like \"catch\" command.\n\
+Like \"catch\" except the catchpoint is only temporary,\n\
+so it will be deleted when hit. Equivalent to \"catch\" followed\n\
+by using \"enable delete\" on the catchpoint number.");
+
+add_com ("watch", class_breakpoint, watch_command,
- add_com ("watch", class_breakpoint, watch_command,
"Set a watchpoint for an expression.\n\
A watchpoint stops execution of your program whenever the value of\n\
an expression changes.");
add_info ("watchpoints", breakpoints_info,
"Synonym for ``info breakpoints''.");
+
+ c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger,
+ (char *) &can_use_hw_watchpoints,
+ "Set debugger's willingness to use watchpoint hardware.\n\
+If zero, gdb will not use hardware for new watchpoints, even if\n\
+such is available. (However, any hardware watchpoints that were\n\
+created before setting this to nonzero, will continue to use watchpoint\n\
+hardware.)",
+ &setlist);
+ add_show_from_set (c, &showlist);
+
+ can_use_hw_watchpoints = 1;
}
projects / thirdparty / binutils-gdb.git / blobdiff