/* Everything about breakpoints, for GDB.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
+ Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include <ctype.h>
#include "gdbcore.h"
#include "gdbcmd.h"
#include "value.h"
-#include "ctype.h"
#include "command.h"
#include "inferior.h"
+#include "gdbthread.h"
#include "target.h"
#include "language.h"
-#include <string.h>
+#include "gdb_string.h"
#include "demangle.h"
+#include "annotate.h"
+#include "symfile.h"
+#include "objfiles.h"
-/* local function prototypes */
+/* Prototypes for local functions. */
static void
catch_command_1 PARAMS ((char *, int, int));
static void
disable_command PARAMS ((char *, int));
-static void
-disable_breakpoint PARAMS ((struct breakpoint *));
-
static void
enable_command PARAMS ((char *, int));
-static void
-enable_breakpoint PARAMS ((struct breakpoint *));
-
static void
map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *)));
static void
ignore_command PARAMS ((char *, int));
-static int
-breakpoint_re_set_one PARAMS ((char *));
-
-static 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 void
watch_command PARAMS ((char *, int));
-static void
+static int
+can_use_hardware_watchpoint PARAMS ((struct value *));
+
+void
tbreak_command PARAMS ((char *, int));
static void
static void
mention PARAMS ((struct breakpoint *));
-static struct breakpoint *
+struct breakpoint *
set_raw_breakpoint PARAMS ((struct symtab_and_line));
static void
-check_duplicates PARAMS ((CORE_ADDR));
+check_duplicates PARAMS ((CORE_ADDR, asection *));
static void
-describe_other_breakpoints PARAMS ((CORE_ADDR));
+describe_other_breakpoints PARAMS ((CORE_ADDR, asection *));
static void
breakpoints_info PARAMS ((char *, int));
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 ((int));
+cleanup_executing_breakpoints PARAMS ((PTR));
static void
commands_command PARAMS ((char *, int));
static int
get_number PARAMS ((char **));
-static void
+void
set_breakpoint_count PARAMS ((int));
+#if 0
+static struct breakpoint *
+create_temp_exception_breakpoint PARAMS ((CORE_ADDR));
+#endif
+
+typedef enum {
+ mark_inserted,
+ mark_uninserted,
+} insertion_state_t;
+
+static int
+remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t));
+
+static int print_it_normal PARAMS ((bpstat));
+
+typedef struct {
+ enum exception_event_kind kind;
+ int enable;
+} args_for_catchpoint_enable;
+
+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 *));
+#endif
+
+static int hw_breakpoint_used_count PARAMS ((void));
+
+static int hw_watchpoint_used_count PARAMS ((enum bptype, int *));
+
+static void hbreak_command PARAMS ((char *, int));
+
+static void thbreak_command PARAMS ((char *, int));
+
+static void watch_command_1 PARAMS ((char *, int, 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? */
-extern int demangle; /* Print de-mangled symbol names? */
+
+#if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD)
+static int internal_breakpoint_number = -1;
+#endif
/* Are we executing breakpoint commands? */
static int executing_breakpoint_commands;
b? (tmp=b->next, 1): 0; \
b = tmp)
+/* True if SHIFT_INST_REGS defined, false otherwise. */
+
+int must_shift_inst_regs =
+#if defined(SHIFT_INST_REGS)
+1
+#else
+0
+#endif
+;
+
+/* True if breakpoint hit counts should be displayed in breakpoint info. */
+
+int show_breakpoint_hit_counts = 1;
+
/* Chain of all breakpoints defined. */
struct breakpoint *breakpoint_chain;
/* Number of last breakpoint made. */
-static int breakpoint_count;
+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. */
-static void
+
+void
set_breakpoint_count (num)
int num;
{
value_from_longest (builtin_type_int, (LONGEST) num));
}
+/* Used in run_command to zero the hit count when a new run starts. */
+
+void
+clear_breakpoint_hit_counts ()
+{
+ struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ b->hit_count = 0;
+}
+
/* Default address, symtab and line to put a breakpoint at
for "break" command with no arg.
if default_breakpoint_valid is zero, the other three are
CORE_ADDR default_breakpoint_address;
struct symtab *default_breakpoint_symtab;
int default_breakpoint_line;
-
-/* Flag indicating extra verbosity for xgdb. */
-extern int xgdb_verbose;
\f
/* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
Advance *PP after the string and any trailing whitespace.
to pass to lookup_internalvar(). */
char *varname;
char *start = ++p;
- value val;
+ value_ptr val;
while (isalnum (*p) || *p == '_')
p++;
if (*arg)
error ("Junk at end of expression");
}
+ breakpoints_changed ();
return;
}
ALL_BREAKPOINTS (b)
if (b->number == bnum)
{
- if (from_tty && input_from_terminal_p ())
- printf_filtered ("Type commands for when breakpoint %d is hit, one per line.\n\
-End with a line saying just \"end\".\n", bnum);
- l = read_command_lines ();
+ char tmpbuf[128];
+ sprintf (tmpbuf, "Type commands for when breakpoint %d is hit, one per line.", bnum);
+ l = read_command_lines (tmpbuf, from_tty);
free_command_lines (&b->commands);
b->commands = l;
+ breakpoints_changed ();
return;
}
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_watchpoint || !b->inserted)
+ 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)
+ continue;
+ /* bp in memory? */
+ if (!b->inserted)
continue;
- else if (b->address + memory_breakpoint_size <= memaddr)
- /* The breakpoint is entirely before the chunk of memory
- we are reading. */
+ /* 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;
- else if (b->address >= memaddr + len)
- /* The breakpoint is entirely after the chunk of memory we
+ 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
insert_breakpoints ()
{
- register struct breakpoint *b;
+ register struct breakpoint *b, *temp;
int val = 0;
int disabled_breaks = 0;
- ALL_BREAKPOINTS (b)
- if (b->type != bp_watchpoint
- && b->enable != disabled
- && ! b->inserted
- && ! b->duplicate)
- {
- val = target_insert_breakpoint(b->address, b->shadow_contents);
- if (val)
- {
- /* Can't set the breakpoint. */
+ 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->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))
- {
- val = 0;
- b->enable = disabled;
- if (!disabled_breaks)
- {
- fprintf (stderr,
- "Cannot insert breakpoint %d:\n", b->number);
- printf_filtered ("Disabling shared library breakpoints:\n");
- }
- disabled_breaks = 1;
- printf_filtered ("%d ", b->number);
- }
- else
+ 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
- {
- fprintf (stderr, "Cannot insert breakpoint %d:\n", b->number);
+ {
+ target_terminal_ours_for_output ();
+ fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
#ifdef ONE_PROCESS_WRITETEXT
- fprintf (stderr,
- "The same program may be running in another process.\n");
+ fprintf_unfiltered (gdb_stderr,
+ "The same program may be running in another process.\n");
#endif
- memory_error (val, b->address); /* which bombs us out */
+ 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)
+ {
+ b->inserted = 1;
}
- }
- else
- b->inserted = 1;
+ /* 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 catchpoint %d; disabling it\n", b->number);
+ b->enable = disabled;
+ }
+ }
}
+
+ 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);
+
+ 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;
+
+ 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;
+ }
+
+ /* 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;
}
+
int
remove_breakpoints ()
{
register struct breakpoint *b;
int val;
-#ifdef BREAKPOINT_DEBUG
- printf ("Removing breakpoints.\n");
-#endif /* BREAKPOINT_DEBUG */
-
ALL_BREAKPOINTS (b)
- if (b->type != bp_watchpoint && b->inserted)
- {
- val = target_remove_breakpoint(b->address, b->shadow_contents);
- if (val)
- return val;
- b->inserted = 0;
-#ifdef BREAKPOINT_DEBUG
- printf ("Removed breakpoint at %s",
- local_hex_string(b->address));
- printf (", shadow %s",
- local_hex_string(b->shadow_contents[0]));
- printf (", %s.\n",
- local_hex_string(b->shadow_contents[1]));
-#endif /* BREAKPOINT_DEBUG */
- }
-
+ {
+ if (b->inserted)
+ {
+ val = remove_breakpoint (b, mark_uninserted);
+ if (val != 0)
+ return val;
+ }
+ }
return 0;
}
-/* Clear the "inserted" flag in all breakpoints.
- This is done when the inferior is loaded. */
-
-void
-mark_breakpoints_out ()
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- b->inserted = 0;
-}
-
-/* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC.
- When continuing from a location with a breakpoint,
- we actually single step once before calling insert_breakpoints. */
-
int
-breakpoint_here_p (pc)
- CORE_ADDR pc;
+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->enable != disabled && b->address == pc)
- return 1;
-
+ {
+ 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;
}
-\f
-/* bpstat stuff. External routines' interfaces are documented
- in breakpoint.h. */
-
-/* Clear a bpstat so that it says we are not at any breakpoint.
- Also free any storage that is part of a bpstat. */
void
-bpstat_clear (bsp)
- bpstat *bsp;
+update_breakpoints_after_exec ()
{
- bpstat p;
- bpstat q;
+ struct breakpoint * b;
+ struct breakpoint * temp;
- if (bsp == 0)
- return;
- p = *bsp;
- while (p != NULL)
+ /* 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)
{
- q = p->next;
- if (p->old_val != NULL)
- value_free (p->old_val);
- free ((PTR)p);
- p = q;
+ /* 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;
}
- *bsp = NULL;
}
-/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
- is part of the bpstat is copied as well. */
-
-bpstat
-bpstat_copy (bs)
- bpstat bs;
+int
+detach_breakpoints (pid)
+ int pid;
{
- bpstat p = NULL;
- bpstat tmp;
- bpstat retval = NULL;
-
- if (bs == NULL)
- return bs;
-
- for (; bs != NULL; bs = bs->next)
+ 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)
{
- tmp = (bpstat) xmalloc (sizeof (*tmp));
- memcpy (tmp, bs, sizeof (*tmp));
- if (p == NULL)
- /* This is the first thing in the chain. */
- retval = tmp;
- else
- p->next = tmp;
- p = tmp;
+ if (b->inserted)
+ {
+ val = remove_breakpoint (b, mark_inserted);
+ if (val != 0)
+ {
+ inferior_pid = saved_inferior_pid;
+ return val;
+ }
+ }
}
- p->next = NULL;
- return retval;
+ inferior_pid = saved_inferior_pid;
+ return 0;
+}
+
+static int
+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_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);
+ else
+ {
+ /* Check to see if breakpoint is in an overlay section;
+ if so, we should remove the breakpoint at the LMA address.
+ If that is not equal to the raw address, then we should
+ presumable remove the breakpoint there as well. */
+ if (overlay_debugging && b->section &&
+ section_is_overlay (b->section))
+ {
+ CORE_ADDR addr;
+
+ addr = overlay_unmapped_address (b->address, b->section);
+ val = target_remove_breakpoint (addr, b->shadow_contents);
+ /* This would be the time to check val, to see if the
+ shadow 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_remove_breakpoint (b->address,
+ b->shadow_contents);
+ }
+ else /* ordinary (non-overlay) address */
+ val = target_remove_breakpoint(b->address, b->shadow_contents);
+ }
+ if (val)
+ return val;
+ b->inserted = (is == mark_inserted);
+ }
+ else if ((b->type == bp_hardware_watchpoint ||
+ b->type == bp_read_watchpoint ||
+ b->type == bp_access_watchpoint)
+ && b->enable == enabled
+ && ! b->duplicate)
+ {
+ value_ptr v, n;
+
+ b->inserted = (is == mark_inserted);
+ /* Walk down the saved value chain. */
+ for (v = b->val_chain; v; v = v->next)
+ {
+ /* For each memory reference remove the watchpoint
+ at that address. */
+ 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_remove_watchpoint (addr, len, type);
+ if (val == -1)
+ b->inserted = 1;
+ val = 0;
+ }
+ }
+ /* Failure to remove any of the hardware watchpoints comes here. */
+ if ((is == mark_uninserted) && (b->inserted))
+ warning ("Hardware watchpoint %d: Could not remove watchpoint\n",
+ b->number);
+
+ /* Free the saved value chain. We will construct a new one
+ the next time the watchpoint is inserted. */
+ for (v = b->val_chain; v; v = n)
+ {
+ n = v->next;
+ value_free (v);
+ }
+ 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. */
+
+void
+mark_breakpoints_out ()
+{
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ b->inserted = 0;
+}
+
+/* Clear the "inserted" flag in all breakpoints and delete any breakpoints
+ 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 (context)
+ enum inf_context context;
+{
+ register struct breakpoint *b, *temp;
+ static int warning_needed = 0;
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ b->inserted = 0;
+
+ switch (b->type)
+ {
+ case bp_call_dummy:
+ case bp_watchpoint_scope:
+
+ /* If the call dummy breakpoint is at the entry point it will
+ cause problems when the inferior is rerun, so we better
+ get rid of it.
+
+ Also get rid of scope breakpoints. */
+ delete_breakpoint (b);
+ break;
+
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+
+ /* Likewise for watchpoints on local expressions. */
+ if (b->exp_valid_block != NULL)
+ delete_breakpoint (b);
+ break;
+ default:
+ /* 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.
+ When continuing from a location with a breakpoint,
+ we actually single step once before calling insert_breakpoints. */
+
+int
+breakpoint_here_p (pc)
+ CORE_ADDR pc;
+{
+ register struct breakpoint *b;
+
+ 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 &&
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
+
+ return 0;
+}
+
+/* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), but it
+ only returns true if there is actually a breakpoint inserted at PC. */
+
+int
+breakpoint_inserted_here_p (pc)
+ CORE_ADDR pc;
+{
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ if (b->inserted
+ && b->address == pc) /* bp is inserted and matches pc */
+ {
+ if (overlay_debugging &&
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY
+ because figuring out the saved SP would take too much time, at least using
+ get_saved_register on the 68k. This means that for this function to
+ work right a port must use the bp_call_dummy breakpoint. */
+
+int
+frame_in_dummy (frame)
+ struct frame_info *frame;
+{
+#ifdef CALL_DUMMY
+#ifdef USE_GENERIC_DUMMY_FRAMES
+ return generic_pc_in_call_dummy (frame->pc, frame->frame);
+#else
+ struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ {
+ static ULONGEST dummy[] = CALL_DUMMY;
+
+ if (b->type == bp_call_dummy
+ && b->frame == frame->frame
+
+ /* We need to check the PC as well as the frame on the sparc,
+ for signals.exp in the testsuite. */
+ && (frame->pc
+ >= (b->address
+ - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE))
+ && frame->pc <= b->address)
+ return 1;
+ }
+#endif /* GENERIC_DUMMY_FRAMES */
+#endif /* CALL_DUMMY */
+ return 0;
+}
+
+/* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC
+ is valid for process/thread PID. */
+
+int
+breakpoint_thread_match (pc, pid)
+ CORE_ADDR pc;
+ int pid;
+{
+ struct breakpoint *b;
+ int thread;
+
+ thread = pid_to_thread_id (pid);
+
+ ALL_BREAKPOINTS (b)
+ if (b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && b->address == pc
+ && (b->thread == -1 || b->thread == thread))
+ {
+ if (overlay_debugging &&
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
+
+ return 0;
+}
+
+\f
+/* 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. */
+
+void
+bpstat_clear (bsp)
+ bpstat *bsp;
+{
+ bpstat p;
+ bpstat q;
+
+ if (bsp == 0)
+ return;
+ p = *bsp;
+ while (p != NULL)
+ {
+ q = p->next;
+ if (p->old_val != NULL)
+ value_free (p->old_val);
+ free ((PTR)p);
+ p = q;
+ }
+ *bsp = NULL;
+}
+
+/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
+ is part of the bpstat is copied as well. */
+
+bpstat
+bpstat_copy (bs)
+ bpstat bs;
+{
+ bpstat p = NULL;
+ bpstat tmp;
+ bpstat retval = NULL;
+
+ if (bs == NULL)
+ return bs;
+
+ for (; bs != NULL; bs = bs->next)
+ {
+ tmp = (bpstat) xmalloc (sizeof (*tmp));
+ memcpy (tmp, bs, sizeof (*tmp));
+ if (p == NULL)
+ /* This is the first thing in the chain. */
+ retval = tmp;
+ else
+ p->next = tmp;
+ p = tmp;
+ }
+ p->next = NULL;
+ return retval;
}
/* Find the bpstat associated with this breakpoint */
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
/* ARGSUSED */
static void
cleanup_executing_breakpoints (ignore)
- int ignore;
+ PTR ignore;
{
executing_breakpoint_commands = 0;
}
{
bpstat bs;
struct cleanup *old_chain;
+ struct command_line *cmd;
+
+ /* Avoid endless recursion if a `source' command is contained
+ in bs->commands. */
+ if (executing_breakpoint_commands)
+ return;
executing_breakpoint_commands = 1;
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;
for (; bs != NULL; bs = bs->next)
{
- while (bs->commands)
+ cmd = bs->commands;
+ while (cmd != NULL)
{
- char *line = bs->commands->line;
- bs->commands = bs->commands->next;
- execute_command (line, 0);
- /* If the inferior is proceeded by the command, bomb out now.
- The bpstat chain has been blown away by wait_for_inferior.
- But since execution has stopped again, there is a new bpstat
- to look at, so start over. */
+ execute_control_command (cmd);
+
if (breakpoint_proceeded)
- goto top;
+ break;
+ else
+ cmd = cmd->next;
}
+ if (breakpoint_proceeded)
+ /* The inferior is proceeded by the command; bomb out now.
+ The bpstat chain has been blown away by wait_for_inferior.
+ But since execution has stopped again, there is a new bpstat
+ to look at, so start over. */
+ goto top;
+ else
+ bs->commands = NULL;
}
executing_breakpoint_commands = 0;
/* 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_watchpoint))
- return 0;
+ && 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 -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
number, not all of them. */
+ annotate_breakpoint (bs->breakpoint_at->number);
printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number);
return 0;
}
-
- if (bs->old_val != NULL)
+ else if ((bs->old_val != NULL) &&
+ (bs->breakpoint_at->type == bp_watchpoint ||
+ bs->breakpoint_at->type == bp_access_watchpoint ||
+ bs->breakpoint_at->type == bp_hardware_watchpoint))
{
- printf_filtered ("\nWatchpoint %d, ", bs->breakpoint_at->number);
- print_expression (bs->breakpoint_at->exp, stdout);
+ annotate_watchpoint (bs->breakpoint_at->number);
+ mention (bs->breakpoint_at);
printf_filtered ("\nOld value = ");
- value_print (bs->old_val, stdout, 0, Val_pretty_default);
+ value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default);
printf_filtered ("\nNew value = ");
- value_print (bs->breakpoint_at->val, stdout, 0,
+ value_print (bs->breakpoint_at->val, gdb_stdout, 0,
Val_pretty_default);
printf_filtered ("\n");
value_free (bs->old_val);
bs->old_val = NULL;
- return 0;
+ /* More than one watchpoint may have been triggered. */
+ return -1;
+ }
+ else if (bs->breakpoint_at->type == bp_access_watchpoint ||
+ bs->breakpoint_at->type == bp_read_watchpoint)
+ {
+ mention (bs->breakpoint_at);
+ printf_filtered ("\nValue = ");
+ value_print (bs->breakpoint_at->val, gdb_stdout, 0,
+ Val_pretty_default);
+ printf_filtered ("\n");
+ return -1;
}
/* We can't deal with it. Maybe another member of the bpstat chain can. */
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;
{
- return !value_true (evaluate_expression ((struct expression *)exp));
+ value_ptr mark = value_mark ();
+ int i = !value_true (evaluate_expression ((struct expression *)exp));
+ value_free_to_mark (mark);
+ return i;
}
/* Allocate a new bpstat and chain it to the current one. */
return bs;
}
\f
-/* Return the frame which we can use to evaluate the expression
- whose valid block is valid_block, or NULL if not in scope.
-
- This whole concept is probably not the way to do things (it is incredibly
- slow being the main reason, not to mention fragile (e.g. the sparc
- frame pointer being fetched as 0 bug causes it to stop)). Instead,
- introduce a version of "struct frame" which survives over calls to the
- inferior, but which is better than FRAME_ADDR in the sense that it lets
- us evaluate expressions relative to that frame (on some machines, it
- can just be a FRAME_ADDR). Save one of those instead of (or in addition
- to) the exp_valid_block, and then use it to evaluate the watchpoint
- expression, with no need to do all this backtracing every time.
-
- Or better yet, what if it just copied the struct frame and its next
- frame? Off the top of my head, I would think that would work
- because things like (a29k) rsize and msize, or (sparc) bottom just
- depend on the frame, and aren't going to be different just because
- the inferior has done something. Trying to recalculate them
- strikes me as a lot of work, possibly even impossible. Saving the
- next frame is needed at least on a29k, where get_saved_register
- uses fi->next->saved_msp. For figuring out whether that frame is
- still on the stack, I guess this needs to be machine-specific (e.g.
- a29k) but I think
-
- read_fp () INNER_THAN watchpoint_frame->frame
-
- would generally work.
-
- Of course the scope of the expression could be less than a whole
- function; perhaps if the innermost frame is the one which the
- watchpoint is relative to (another machine-specific thing, usually
-
- FRAMELESS_FUNCTION_INVOCATION (get_current_frame(), fromleaf)
- read_fp () == wp_frame->frame
- && !fromleaf
-
- ), *then* it could do a
-
- contained_in (get_current_block (), wp->exp_valid_block).
-
- */
-
-FRAME
-within_scope (valid_block)
- struct block *valid_block;
-{
- FRAME fr = get_current_frame ();
- struct frame_info *fi = get_frame_info (fr);
- CORE_ADDR func_start;
-
- /* If caller_pc_valid is true, we are stepping through
- a function prologue, which is bounded by callee_func_start
- (inclusive) and callee_prologue_end (exclusive).
- caller_pc is the pc of the caller.
-
- Yes, this is hairy. */
- static int caller_pc_valid = 0;
- static CORE_ADDR caller_pc;
- static CORE_ADDR callee_func_start;
- static CORE_ADDR callee_prologue_end;
-
- find_pc_partial_function (fi->pc, (PTR)NULL, &func_start, (CORE_ADDR *)NULL);
- func_start += FUNCTION_START_OFFSET;
- if (fi->pc == func_start)
- {
- /* We just called a function. The only other case I
- can think of where the pc would equal the pc of the
- start of a function is a frameless function (i.e.
- no prologue) where we branch back to the start
- of the function. In that case, SKIP_PROLOGUE won't
- find one, and we'll clear caller_pc_valid a few lines
- down. */
- caller_pc_valid = 1;
- caller_pc = SAVED_PC_AFTER_CALL (fr);
- callee_func_start = func_start;
- SKIP_PROLOGUE (func_start);
- callee_prologue_end = func_start;
- }
- if (caller_pc_valid)
- {
- if (fi->pc < callee_func_start
- || fi->pc >= callee_prologue_end)
- caller_pc_valid = 0;
- }
-
- if (contained_in (block_for_pc (caller_pc_valid
- ? caller_pc
- : fi->pc),
- valid_block))
- {
- return fr;
- }
- fr = get_prev_frame (fr);
-
- /* If any active frame is in the exp_valid_block, then it's
- OK. Note that this might not be the same invocation of
- the exp_valid_block that we were watching a little while
- ago, or the same one as when the watchpoint was set (e.g.
- we are watching a local variable in a recursive function.
- When we return from a recursive invocation, then we are
- suddenly watching a different instance of the variable).
-
- At least for now I am going to consider this a feature. */
- for (; fr != NULL; fr = get_prev_frame (fr))
- {
- fi = get_frame_info (fr);
- if (contained_in (block_for_pc (fi->pc),
- valid_block))
- {
- return fr;
- }
- }
- return NULL;
-}
-
/* Possible return values for watchpoint_check (this can't be an enum
because of check_errors). */
-/* The watchpoint has been disabled. */
-#define WP_DISABLED 1
+/* The watchpoint has been deleted. */
+#define WP_DELETED 1
/* The value has changed. */
#define WP_VALUE_CHANGED 2
/* The value has not changed. */
#define WP_VALUE_NOT_CHANGED 3
+#define BP_TEMPFLAG 1
+#define BP_HARDWAREFLAG 2
+
/* Check watchpoint condition. */
+
static int
watchpoint_check (p)
- char *p;
+ PTR p;
{
bpstat bs = (bpstat) p;
- FRAME fr;
-
+ struct breakpoint *b;
+ struct frame_info *fr;
int within_current_scope;
- if (bs->breakpoint_at->exp_valid_block == NULL)
+
+ b = bs->breakpoint_at;
+
+ if (b->exp_valid_block == NULL)
within_current_scope = 1;
else
{
- fr = within_scope (bs->breakpoint_at->exp_valid_block);
- within_current_scope = fr != NULL;
+ /* There is no current frame at this moment. If we're going to have
+ any chance of handling watchpoints on local variables, we'll need
+ the frame chain (so we can determine if we're in scope). */
+ reinit_frame_cache();
+ fr = find_frame_addr_in_frame_chain (b->watchpoint_frame);
+ within_current_scope = (fr != NULL);
if (within_current_scope)
/* If we end up stopping, the current frame will get selected
in normal_stop. So this call to select_frame won't affect
{
/* We use value_{,free_to_}mark because it could be a
*long* time before we return to the command level and
- call free_all_values. */
- /* But couldn't we just call free_all_values instead? */
+ call free_all_values. We can't call free_all_values because
+ we might be in the middle of evaluating a function call. */
- value mark = value_mark ();
- value new_val = evaluate_expression (bs->breakpoint_at->exp);
- if (!value_equal (bs->breakpoint_at->val, new_val))
+ value_ptr mark = value_mark ();
+ value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp);
+ if (!value_equal (b->val, new_val))
{
release_value (new_val);
value_free_to_mark (mark);
- bs->old_val = bs->breakpoint_at->val;
- bs->breakpoint_at->val = new_val;
+ bs->old_val = b->val;
+ b->val = new_val;
/* We will stop here */
return WP_VALUE_CHANGED;
}
So we can't even detect the first assignment to it and
watch after that (since the garbage may or may not equal
the first value assigned). */
- bs->breakpoint_at->enable = disabled;
printf_filtered ("\
-Watchpoint %d disabled because the program has left the block in\n\
+Watchpoint %d deleted because the program has left the block in\n\
which its expression is valid.\n", bs->breakpoint_at->number);
- return WP_DISABLED;
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
+
+ return WP_DELETED;
}
}
/* 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)
return -1;
}
+/* Get a bpstat associated with having just stopped at address *PC
+ and frame address CORE_ADDRESS. Update *PC to point at the
+ breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero
+ if this is known to not be a real breakpoint (it could still be a
+ watchpoint, though). */
+
/* Determine whether we stopped at a breakpoint, etc, or whether we
don't understand this stop. Result is a chain of bpstat's such that:
if we don't understand the stop, the result is a null pointer.
- if we understand why we stopped, the result is not null, and
- the first element of the chain contains summary "stop" and
- "print" flags for the whole chain.
+ if we understand why we stopped, the result is not null.
Each element of the chain refers to a particular breakpoint or
watchpoint at which we have stopped. (We may have stopped for
several reasons concurrently.)
Each element of the chain has valid next, breakpoint_at,
- commands, FIXME??? fields.
+ commands, FIXME??? fields. */
- */
-
-
bpstat
-bpstat_stop_status (pc, frame_address)
+bpstat_stop_status (pc, not_a_breakpoint)
CORE_ADDR *pc;
- FRAME_ADDR frame_address;
+ int not_a_breakpoint;
{
- register struct breakpoint *b;
+ register struct breakpoint *b, *temp;
CORE_ADDR bp_addr;
-#if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS)
/* True if we've hit a breakpoint (as opposed to a watchpoint). */
int real_breakpoint = 0;
-#endif
/* Root of the chain of bpstat's */
- struct bpstat root_bs[1];
+ struct bpstats root_bs[1];
/* Pointer to the last thing in the chain currently. */
bpstat bs = root_bs;
+ static char message1[] =
+ "Error evaluating expression for watchpoint %d\n";
+ char message[sizeof (message1) + 30 /* slop */];
/* Get the address where the breakpoint would have been. */
bp_addr = *pc - DECR_PC_AFTER_BREAK;
- ALL_BREAKPOINTS (b)
+ ALL_BREAKPOINTS_SAFE (b, temp)
{
- if (b->enable == disabled)
+ if (b->enable == 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
+ && 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) &&
+ !section_is_mapped (b->section)))
+ continue;
+
+ if (b->type == bp_hardware_breakpoint
+ && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK))
+ continue;
+
+ if (b->type != bp_watchpoint
+ && b->type != bp_hardware_watchpoint
+ && b->type != bp_read_watchpoint
+ && b->type != bp_access_watchpoint
+ && not_a_breakpoint)
continue;
- if (b->type != bp_watchpoint && b->address != bp_addr)
+ /* 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;
+ 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;
- if (b->type == bp_watchpoint)
+ sprintf (message, message1, b->number);
+ if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint)
{
- static char message1[] =
- "Error evaluating expression for watchpoint %d\n";
- char message[sizeof (message1) + 30 /* slop */];
- sprintf (message, message1, b->number);
- switch (catch_errors (watchpoint_check, (char *) bs, message,
- RETURN_MASK_ALL))
+ switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL))
{
- case WP_DISABLED:
+ case WP_DELETED:
/* We've already printed what needs to be printed. */
bs->print_it = print_it_done;
/* Stop. */
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;
+ /* Don't consider this a hit. */
+ --(b->hit_count);
continue;
default:
/* Can't happen. */
/* FALLTHROUGH */
case 0:
/* Error from catch_errors. */
- b->enable = disabled;
- printf_filtered ("Watchpoint %d disabled.\n", b->number);
+ printf_filtered ("Watchpoint %d deleted.\n", b->number);
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
/* We've already printed what needs to be printed. */
bs->print_it = print_it_done;
+
/* Stop. */
break;
}
}
-#if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS)
- else
- real_breakpoint = 1;
-#endif
-
- if (b->frame && b->frame != frame_address)
+ else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint)
+ {
+ CORE_ADDR addr;
+ value_ptr v;
+ int found = 0;
+
+ addr = target_stopped_data_address();
+ if (addr == 0) continue;
+ for (v = b->val_chain; v; v = v->next)
+ {
+ if (v->lval == lval_memory)
+ {
+ CORE_ADDR vaddr;
+
+ vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+ if (addr == vaddr)
+ found = 1;
+ }
+ }
+ if (found)
+ switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL))
+ {
+ case WP_DELETED:
+ /* We've already printed what needs to be printed. */
+ bs->print_it = print_it_done;
+ /* Stop. */
+ break;
+ case WP_VALUE_CHANGED:
+ case WP_VALUE_NOT_CHANGED:
+ /* Stop. */
+ ++(b->hit_count);
+ break;
+ default:
+ /* Can't happen. */
+ case 0:
+ /* Error from catch_errors. */
+ printf_filtered ("Watchpoint %d deleted.\n", b->number);
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
+ /* We've already printed what needs to be printed. */
+ bs->print_it = print_it_done;
+ break;
+ }
+ }
+ 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 &&
+ (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;
bs->next = NULL; /* Terminate the chain */
bs = root_bs->next; /* Re-grab the head of the chain */
-#if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS)
- if (bs)
+
+ if ((DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) && bs)
{
if (real_breakpoint)
{
*pc = bp_addr;
#if defined (SHIFT_INST_REGS)
- {
- CORE_ADDR pc = read_register (PC_REGNUM);
- CORE_ADDR npc = read_register (NPC_REGNUM);
- if (pc != npc)
- {
- write_register (NNPC_REGNUM, npc);
- write_register (NPC_REGNUM, pc);
- }
- }
+ SHIFT_INST_REGS();
#else /* No SHIFT_INST_REGS. */
write_pc (bp_addr);
#endif /* No SHIFT_INST_REGS. */
}
}
-#endif /* DECR_PC_AFTER_BREAK != 0. */
+
+ /* The value of a hardware watchpoint hasn't changed, but the
+ intermediate memory locations we are watching may have. */
+ if (bs && ! bs->stop &&
+ (bs->breakpoint_at->type == bp_hardware_watchpoint ||
+ bs->breakpoint_at->type == bp_read_watchpoint ||
+ bs->breakpoint_at->type == bp_access_watchpoint))
+ {
+ remove_breakpoints ();
+ insert_breakpoints ();
+ }
return bs;
}
\f
/* We hit the longjmp_resume breakpoint. */
long_resume,
+ /* We hit the step_resume breakpoint. */
+ step_resume,
+
+ /* We hit the through_sigtramp breakpoint. */
+ through_sig,
+
+ /* 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
};
/* Here is the table which drives this routine. So that we can
format it pretty, we define some abbreviations for the
enum bpstat_what codes. */
-#define keep_c BPSTAT_WHAT_KEEP_CHECKING
-#define stop_s BPSTAT_WHAT_STOP_SILENT
-#define stop_n BPSTAT_WHAT_STOP_NOISY
-#define single BPSTAT_WHAT_SINGLE
-#define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME
-#define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
-#define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
+#define kc BPSTAT_WHAT_KEEP_CHECKING
+#define ss BPSTAT_WHAT_STOP_SILENT
+#define sn BPSTAT_WHAT_STOP_NOISY
+#define sgl BPSTAT_WHAT_SINGLE
+#define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
+#define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
+#define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
+#define sr BPSTAT_WHAT_STEP_RESUME
+#define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
+#define shl BPSTAT_WHAT_CHECK_SHLIBS
+#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
a bit confused, not unusable. */
#define err BPSTAT_WHAT_STOP_NOISY
/* Given an old action and a class, come up with a new action. */
+ /* One interesting property of this table is that wp_silent is the same
+ as bp_silent and wp_noisy is the same as bp_noisy. That is because
+ after stopping, the check for whether to step over a breakpoint
+ (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
+ reference to how we stopped. We retain separate wp_silent and bp_silent
+ codes in case we want to change that someday. */
+
+ /* step_resume entries: a step resume breakpoint overrides another
+ breakpoint of signal handling (see comment in wait_for_inferior
+ at first IN_SIGTRAMP where we set the step_resume breakpoint). */
+ /* We handle the through_sigtramp_breakpoint the same way; having both
+ one of those and a step_resume_breakpoint is probably very rare (?). */
+
static const enum bpstat_what_main_action
table[(int)class_last][(int)BPSTAT_WHAT_LAST] =
{
/* old action */
- /* keep_c stop_s stop_n single setlr clrlr clrlrs */
-
-/*no_effect*/ {keep_c, stop_s, stop_n, single, setlr , clrlr , clrlrs},
-/*wp_silent*/ {stop_s, stop_s, stop_n, stop_s, stop_s, stop_s, stop_s},
-/*wp_noisy*/ {stop_n, stop_n, stop_n, stop_n, stop_n, stop_n, stop_n},
-/*bp_nostop*/ {single, stop_s, stop_n, single, setlr , clrlrs, clrlrs},
-/*bp_silent*/ {stop_s, stop_s, stop_n, stop_s, stop_s, stop_s, stop_s},
-/*bp_noisy*/ {stop_n, stop_n, stop_n, stop_n, stop_n, stop_n, stop_n},
-/*long_jump*/ {setlr , stop_s, stop_n, setlr , err , err , err },
-/*long_resume*/ {clrlr , stop_s, stop_n, clrlrs, err , err , err }
- };
-#undef keep_c
-#undef stop_s
-#undef stop_n
-#undef single
-#undef setlr
-#undef clrlr
-#undef clrlrs
+ /* 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 sgl
+#undef slr
+#undef clr
+#undef clrs
#undef err
+#undef sr
+#undef ts
+#undef shl
+#undef shlr
enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING;
- int found_step_resume = 0;
+ struct bpstat_what retval;
+ retval.call_dummy = 0;
for (; bs != NULL; bs = bs->next)
{
enum class bs_class = no_effect;
continue;
switch (bs->breakpoint_at->type)
{
+ case bp_none:
+ continue;
+
case bp_breakpoint:
+ case bp_hardware_breakpoint:
case bp_until:
case bp_finish:
if (bs->stop)
bs_class = bp_nostop;
break;
case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
if (bs->stop)
{
if (bs->print)
bs_class = long_resume;
break;
case bp_step_resume:
-#if 0
- /* Need to temporarily disable this until we can fix the bug
- with nexting over a breakpoint with ->stop clear causing
- an infinite loop. For now, treat the breakpoint as having
- been hit even if the frame is wrong. */
if (bs->stop)
{
-#endif
- found_step_resume = 1;
- /* We don't handle this via the main_action. */
- bs_class = no_effect;
-#if 0
+ bs_class = step_resume;
}
else
/* It is for the wrong frame. */
bs_class = bp_nostop;
-#endif
+ break;
+ case bp_through_sigtramp:
+ bs_class = through_sig;
+ break;
+ case bp_watchpoint_scope:
+ bs_class = bp_nostop;
+ break;
+ 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. */
+ bs_class = bp_silent;
+ retval.call_dummy = 1;
break;
}
current_action = table[(int)bs_class][(int)current_action];
}
- {
- struct bpstat_what retval;
- retval.main_action = current_action;
- retval.step_resume = found_step_resume;
- return retval;
- }
+ retval.main_action = current_action;
+ return retval;
}
/* Nonzero if we should step constantly (e.g. watchpoints on machines
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", "until", "finish", "watchpoint",
- "longjmp", "longjmp resume"};
- static char *bpdisps[] = {"del", "dis", "keep"};
- static char bpenables[] = "ny";
+ 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];
ALL_BREAKPOINTS (b)
/* We only print out user settable breakpoints unless the allflag is set. */
if (!allflag
&& b->type != bp_breakpoint
- && b->type != bp_watchpoint)
+ && 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
+ && b->type != bp_access_watchpoint
+ && b->type != bp_hardware_watchpoint)
continue;
if (!found_a_breakpoint++)
- printf_filtered ("Num Type Disp Enb %sWhat\n",
- addressprint ? "Address " : "");
-
- printf_filtered ("%-3d %-14s %-4s %-3c ",
- b->number,
- bptypes[(int)b->type],
- bpdisps[(int)b->disposition],
- bpenables[(int)b->enable]);
+ {
+ annotate_breakpoints_headers ();
+
+ annotate_field (0);
+ printf_filtered ("Num ");
+ annotate_field (1);
+ printf_filtered ("Type ");
+ annotate_field (2);
+ printf_filtered ("Disp ");
+ annotate_field (3);
+ printf_filtered ("Enb ");
+ if (addressprint)
+ {
+ annotate_field (4);
+ printf_filtered ("Address ");
+ }
+ annotate_field (5);
+ printf_filtered ("What\n");
+
+ annotate_breakpoints_table ();
+ }
+
+ annotate_record ();
+ annotate_field (0);
+ printf_filtered ("%-3d ", b->number);
+ annotate_field (1);
+ 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);
+ printf_filtered ("%-3c ", bpenables[(int)b->enable]);
+
strcpy (wrap_indent, " ");
if (addressprint)
strcat (wrap_indent, " ");
switch (b->type)
{
case bp_watchpoint:
- print_expression (b->exp, stdout);
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+ /* 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);
+ 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:
case bp_until:
case bp_finish:
case bp_longjmp:
case bp_longjmp_resume:
+ case bp_step_resume:
+ case bp_through_sigtramp:
+ case bp_watchpoint_scope:
+ case bp_call_dummy:
+ case bp_shlib_event:
if (addressprint)
- printf_filtered ("%s ", local_hex_string_custom(b->address, "08"));
+ {
+ annotate_field (4);
+ /* FIXME-32x64: need a print_address_numeric with
+ field width */
+ printf_filtered
+ ("%s ",
+ local_hex_string_custom
+ ((unsigned long) b->address, "08l"));
+ }
+
+ annotate_field (5);
last_addr = b->address;
if (b->source_file)
{
- sym = find_pc_function (b->address);
+ sym = find_pc_sect_function (b->address, b->section);
if (sym)
{
- fputs_filtered ("in ", stdout);
- fputs_filtered (SYMBOL_SOURCE_NAME (sym), stdout);
+ fputs_filtered ("in ", gdb_stdout);
+ fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout);
wrap_here (wrap_indent);
- fputs_filtered (" at ", stdout);
+ fputs_filtered (" at ", gdb_stdout);
}
- fputs_filtered (b->source_file, stdout);
+ fputs_filtered (b->source_file, gdb_stdout);
printf_filtered (":%d", b->line_number);
}
else
- print_address_symbolic (b->address, stdout, demangle, " ");
- /* intentional fall-through */
- case bp_step_resume: /* do nothing. */
+ print_address_symbolic (b->address, gdb_stdout, demangle, " ");
break;
}
+ if (b->thread != -1)
+ printf_filtered (" thread %d", b->thread );
+
printf_filtered ("\n");
if (b->frame)
- printf_filtered ("\tstop only in stack frame at %s\n",
- local_hex_string(b->frame));
+ {
+ annotate_field (6);
+
+ printf_filtered ("\tstop only in stack frame at ");
+ print_address_numeric (b->frame, 1, gdb_stdout);
+ printf_filtered ("\n");
+ }
+
if (b->cond)
{
+ annotate_field (7);
+
printf_filtered ("\tstop only if ");
- print_expression (b->cond, stdout);
+ print_expression (b->cond, gdb_stdout);
printf_filtered ("\n");
}
+
+ if (b->thread != -1)
+ {
+ /* FIXME should make an annotation for this */
+ printf_filtered ("\tstop only in thread %d\n", b->thread);
+ }
+
+ if (show_breakpoint_hit_counts && b->hit_count)
+ {
+ /* FIXME should make an annotation for this */
+ 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)
- printf_filtered ("\tignore next %d hits\n", b->ignore_count);
+ {
+ annotate_field (8);
+
+ printf_filtered ("\tignore next %d hits\n", b->ignore_count);
+ }
+
if ((l = b->commands))
- while (l)
- {
- fputs_filtered ("\t", stdout);
- fputs_filtered (l->line, stdout);
- fputs_filtered ("\n", stdout);
- l = l->next;
- }
+ {
+ annotate_field (9);
+
+ while (l)
+ {
+ print_command_line (l, 4);
+ l = l->next;
+ }
+ }
}
if (!found_a_breakpoint)
that a comparison of an unsigned with -1 is always false. */
if (last_addr != (CORE_ADDR)-1)
set_next_address (last_addr);
+
+ annotate_breakpoints_table_end ();
}
/* ARGSUSED */
#if MAINTENANCE_CMDS
/* ARGSUSED */
-static void
+void
maintenance_info_breakpoints (bnum_exp, from_tty)
char *bnum_exp;
int from_tty;
/* Print a message describing any breakpoints set at PC. */
static void
-describe_other_breakpoints (pc)
- register CORE_ADDR pc;
+describe_other_breakpoints (pc, section)
+ CORE_ADDR pc;
+ asection *section;
{
register int others = 0;
register struct breakpoint *b;
ALL_BREAKPOINTS (b)
if (b->address == pc)
- others++;
+ if (overlay_debugging == 0 ||
+ b->section == section)
+ others++;
if (others > 0)
{
- printf ("Note: breakpoint%s ", (others > 1) ? "s" : "");
+ printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : "");
ALL_BREAKPOINTS (b)
if (b->address == pc)
- {
- others--;
- printf ("%d%s%s ",
- b->number,
- (b->enable == disabled) ? " (disabled)" : "",
- (others > 1) ? "," : ((others == 1) ? " and" : ""));
- }
- printf ("also set at pc %s.\n", local_hex_string(pc));
+ if (overlay_debugging == 0 ||
+ b->section == section)
+ {
+ others--;
+ printf_filtered
+ ("%d%s%s ",
+ b->number,
+ ((b->enable == disabled || b->enable == shlib_disabled || b->enable == call_disabled)
+ ? " (disabled)" : ""),
+ (others > 1) ? "," : ((others == 1) ? " and" : ""));
+ }
+ printf_filtered ("also set at pc ");
+ print_address_numeric (pc, 1, gdb_stdout);
+ printf_filtered (".\n");
}
}
\f
This is so that the bpt instruction is only inserted once. */
static void
-check_duplicates (address)
+check_duplicates (address, section)
CORE_ADDR address;
+ asection *section;
{
register struct breakpoint *b;
register int count = 0;
return;
ALL_BREAKPOINTS (b)
- if (b->enable != disabled && b->address == address)
+ if (b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && b->address == address
+ && (overlay_debugging == 0 || b->section == section))
{
count++;
b->duplicate = count > 1;
error(); otherwise it leaves a bogus breakpoint on the chain. Validate
your arguments BEFORE calling this routine! */
-static struct breakpoint *
+struct breakpoint *
set_raw_breakpoint (sal)
struct symtab_and_line sal;
{
else
b->source_file = savestring (sal.symtab->filename,
strlen (sal.symtab->filename));
+ b->section = sal.section;
+ b->language = current_language->la_language;
+ b->input_radix = input_radix;
+ b->thread = -1;
b->line_number = sal.line;
b->enable = enabled;
b->next = 0;
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
b1->next = b;
}
- check_duplicates (sal.pc);
+ check_duplicates (sal.pc, sal.section);
+ breakpoints_changed ();
return b;
}
+#ifdef GET_LONGJMP_TARGET
+
static void
-create_longjmp_breakpoint(func_name)
+create_longjmp_breakpoint (func_name)
char *func_name;
{
struct symtab_and_line sal;
struct breakpoint *b;
- static int internal_breakpoint_number = -1;
+ INIT_SAL (&sal); /* initialize to zeroes */
if (func_name != NULL)
{
struct minimal_symbol *m;
- m = lookup_minimal_symbol(func_name, (struct objfile *)NULL);
+ m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL);
if (m)
sal.pc = SYMBOL_VALUE_ADDRESS (m);
else
return;
}
- else
- sal.pc = 0;
-
- sal.symtab = NULL;
- sal.line = 0;
-
- b = set_raw_breakpoint(sal);
+ sal.section = find_pc_overlay (sal.pc);
+ b = set_raw_breakpoint (sal);
if (!b) return;
b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume;
b->number = internal_breakpoint_number--;
}
+#endif /* #ifdef GET_LONGJMP_TARGET */
+
/* Call this routine when stepping and nexting to enable a breakpoint if we do
a longjmp(). When we hit that breakpoint, call
set_longjmp_resume_breakpoint() to figure out where we are going. */
if (b->type == bp_longjmp)
{
b->enable = enabled;
- check_duplicates (b->address);
+ check_duplicates (b->address, b->section);
+ }
+}
+
+void
+disable_longjmp_breakpoint()
+{
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ if ( b->type == bp_longjmp
+ || b->type == bp_longjmp_resume)
+ {
+ b->enable = disabled;
+ check_duplicates (b->address, b->section);
+ }
+}
+
+#ifdef SOLIB_ADD
+void
+remove_solib_event_breakpoints ()
+{
+ register struct breakpoint *b, *temp;
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ if (b->type == bp_shlib_event)
+ delete_breakpoint (b);
+}
+
+void
+create_solib_event_breakpoint (address)
+ CORE_ADDR address;
+{
+ struct breakpoint *b;
+ struct symtab_and_line sal;
+
+ INIT_SAL (&sal); /* initialize to zeroes */
+ sal.pc = address;
+ sal.section = find_pc_overlay (sal.pc);
+ b = set_raw_breakpoint (sal);
+ b->number = internal_breakpoint_number--;
+ b->disposition = donttouch;
+ 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];
+
+ /* 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;
}
}
-void
-disable_longjmp_breakpoint()
+#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;
+
+ mention (b);
+}
+
+static int
+hw_breakpoint_used_count()
+{
+ register struct breakpoint *b;
+ int i = 0;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->type == bp_hardware_breakpoint && b->enable == enabled)
+ i++;
+ }
+
+ return i;
+}
+
+static int
+hw_watchpoint_used_count(type, other_type_used)
+ enum bptype type;
+ int *other_type_used;
{
register struct breakpoint *b;
+ int i = 0;
+ *other_type_used = 0;
ALL_BREAKPOINTS (b)
- if ( b->type == bp_longjmp
- || b->type == bp_longjmp_resume)
- {
- b->enable = disabled;
- check_duplicates (b->address);
- }
+ {
+ if (b->enable == enabled)
+ {
+ if (b->type == type) i++;
+ else if ((b->type == bp_hardware_watchpoint ||
+ b->type == bp_read_watchpoint ||
+ b->type == bp_access_watchpoint)
+ && b->enable == enabled)
+ *other_type_used = 1;
+ }
+ }
+ return i;
}
/* Call this after hitting the longjmp() breakpoint. Use this to set a new
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)
CORE_ADDR pc;
- FRAME frame;
+ struct frame_info *frame;
{
register struct breakpoint *b;
b->address = pc;
b->enable = enabled;
if (frame != NULL)
- b->frame = FRAME_FP(frame);
+ b->frame = frame->frame;
else
b->frame = 0;
- check_duplicates (b->address);
+ check_duplicates (b->address, b->section);
return;
}
}
+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. */
struct breakpoint *
set_momentary_breakpoint (sal, frame, type)
struct symtab_and_line sal;
- FRAME frame;
+ struct frame_info *frame;
enum bptype type;
{
register struct breakpoint *b;
b->type = type;
b->enable = enabled;
b->disposition = donttouch;
- b->frame = (frame ? FRAME_FP (frame) : 0);
+ b->frame = (frame ? frame->frame : 0);
+
+ /* If we're debugging a multi-threaded program, then we
+ want momentary breakpoints to be active in only a
+ single thread of control. */
+ if (in_thread_list (inferior_pid))
+ b->thread = pid_to_thread_id (inferior_pid);
+
return b;
}
-#if 0
-void
-clear_momentary_breakpoints ()
-{
- register struct breakpoint *b;
- ALL_BREAKPOINTS (b)
- if (b->disposition == delete)
- {
- delete_breakpoint (b);
- break;
- }
-}
-#endif
\f
/* Tell the user we have just set a breakpoint B. */
+
static void
mention (b)
struct breakpoint *b;
{
+ int say_where = 0;
+
+ /* FIXME: This is misplaced; mention() is called by things (like hitting a
+ watchpoint) other than breakpoint creation. It should be possible to
+ clean this up and at the same time replace the random calls to
+ breakpoint_changed with this hook, as has already been done for
+ delete_breakpoint_hook and so on. */
+ if (create_breakpoint_hook)
+ create_breakpoint_hook (b);
+
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, stdout);
+ print_expression (b->exp, gdb_stdout);
+ break;
+ case bp_hardware_watchpoint:
+ printf_filtered ("Hardware watchpoint %d: ", b->number);
+ print_expression (b->exp, gdb_stdout);
+ break;
+ case bp_read_watchpoint:
+ printf_filtered ("Hardware read watchpoint %d: ", b->number);
+ print_expression (b->exp, gdb_stdout);
+ break;
+ case bp_access_watchpoint:
+ printf_filtered ("Hardware access (read/write) watchpoint %d: ",b->number);
+ print_expression (b->exp, gdb_stdout);
break;
case bp_breakpoint:
- printf_filtered ("Breakpoint %d at %s", b->number,
- local_hex_string(b->address));
- if (b->source_file)
- printf_filtered (": file %s, line %d.",
- b->source_file, b->line_number);
+ printf_filtered ("Breakpoint %d", b->number);
+ say_where = 1;
+ break;
+ case bp_hardware_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:
case bp_longjmp_resume:
case bp_step_resume:
+ case bp_through_sigtramp:
+ case bp_call_dummy:
+ case bp_watchpoint_scope:
+ case bp_shlib_event:
break;
}
+ if (say_where)
+ {
+ if (addressprint || b->source_file == NULL)
+ {
+ printf_filtered (" at ");
+ print_address_numeric (b->address, 1, gdb_stdout);
+ }
+ 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");
}
-#if 0
-/* Nobody calls this currently. */
-/* Set a breakpoint from a symtab and line.
- If TEMPFLAG is nonzero, it is a temporary breakpoint.
- ADDR_STRING is a malloc'd string holding the name of where we are
- setting the breakpoint. This is used later to re-set it after the
- program is relinked and symbols are reloaded.
- Print the same confirmation messages that the breakpoint command prints. */
-
-void
-set_breakpoint (s, line, tempflag, addr_string)
- struct symtab *s;
- int line;
- int tempflag;
- char *addr_string;
-{
- register struct breakpoint *b;
- struct symtab_and_line sal;
-
- sal.symtab = s;
- sal.line = line;
- sal.pc = 0;
- resolve_sal_pc (&sal); /* Might error out */
- describe_other_breakpoints (sal.pc);
-
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->type = bp_breakpoint;
- b->cond = 0;
- b->addr_string = addr_string;
- b->enable = enabled;
- b->disposition = tempflag ? delete : donttouch;
-
- mention (b);
-}
-#endif /* 0 */
\f
/* Set a breakpoint according to ARG (function, linenum or *address)
- and make it temporary if TEMPFLAG is nonzero. */
+ flag: first bit : 0 non-temporary, 1 temporary.
+ second bit : 0 normal breakpoint, 1 hardware breakpoint. */
static void
-break_command_1 (arg, tempflag, from_tty)
+break_command_1 (arg, flag, from_tty)
char *arg;
- int tempflag, from_tty;
+ int flag, from_tty;
{
+ int tempflag, hardwareflag;
struct symtabs_and_lines sals;
struct symtab_and_line sal;
register struct expression *cond = 0;
struct cleanup *old_chain;
struct cleanup *canonical_strings_chain = NULL;
char **canonical = (char **)NULL;
-
int i;
+ int thread;
+
+ hardwareflag = flag & BP_HARDWAREFLAG;
+ tempflag = flag & BP_TEMPFLAG;
sals.sals = NULL;
sals.nelts = 0;
- sal.line = sal.pc = sal.end = 0;
- sal.symtab = 0;
+ INIT_SAL (&sal); /* initialize to zeroes */
/* If no arg given, or if first arg is 'if ', use the default breakpoint. */
sal.pc = default_breakpoint_address;
sal.line = default_breakpoint_line;
sal.symtab = default_breakpoint_symtab;
+ sal.section = find_pc_overlay (sal.pc);
sals.sals[0] = sal;
sals.nelts = 1;
}
}
}
+ thread = -1; /* No specific thread yet */
+
/* Resolve all line numbers to PC's, and verify that conditions
can be parsed, before setting any breakpoints. */
for (i = 0; i < sals.nelts; i++)
{
+ char *tok, *end_tok;
+ 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);
+ }
- while (arg && *arg)
+ tok = arg;
+
+ while (tok && *tok)
{
- if (arg[0] == 'i' && arg[1] == 'f'
- && (arg[2] == ' ' || arg[2] == '\t'))
+ while (*tok == ' ' || *tok == '\t')
+ tok++;
+
+ end_tok = tok;
+
+ while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
+ end_tok++;
+
+ toklen = end_tok - tok;
+
+ if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
+ {
+ tok = cond_start = end_tok + 1;
+ cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
+ cond_end = tok;
+ }
+ else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
{
- arg += 2;
- cond_start = arg;
- cond = parse_exp_1 (&arg, block_for_pc (sals.sals[i].pc), 0);
- cond_end = arg;
+ char *tmptok;
+
+ tok = end_tok + 1;
+ tmptok = tok;
+ thread = strtol (tok, &tok, 0);
+ if (tok == tmptok)
+ error ("Junk after thread keyword.");
+ if (!valid_thread_id (thread))
+ error ("Unknown thread %d\n", thread);
}
else
error ("Junk at end of arguments.");
}
}
+ if (hardwareflag)
+ {
+ int i, target_resources_ok;
+
+ i = hw_breakpoint_used_count ();
+ target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT (
+ bp_hardware_breakpoint, i + sals.nelts, 0);
+ if (target_resources_ok == 0)
+ error ("No hardware breakpoint support in the target.");
+ else if (target_resources_ok < 0)
+ error ("Hardware breakpoints used exceeds limit.");
+ }
/* Remove the canonical strings from the cleanup, they are needed below. */
if (canonical != (char **)NULL)
sal = sals.sals[i];
if (from_tty)
- describe_other_breakpoints (sal.pc);
+ describe_other_breakpoints (sal.pc, sal.section);
b = set_raw_breakpoint (sal);
set_breakpoint_count (breakpoint_count + 1);
b->number = breakpoint_count;
- b->type = bp_breakpoint;
+ b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint;
b->cond = cond;
+ b->thread = thread;
/* If a canonical line spec is needed use that instead of the
command string. */
b->cond_string = savestring (cond_start, cond_end - cond_start);
b->enable = enabled;
- b->disposition = tempflag ? delete : donttouch;
-
+ b->disposition = tempflag ? del : donttouch;
mention (b);
}
if (sals.nelts > 1)
{
- printf ("Multiple breakpoints were set.\n");
- printf ("Use the \"delete\" command to delete unwanted breakpoints.\n");
+ printf_filtered ("Multiple breakpoints were set.\n");
+ printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
}
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
{
CORE_ADDR pc;
- if (sal->pc == 0 && sal->symtab != 0)
+ if (sal->pc == 0 && sal->symtab != NULL)
{
- pc = find_line_pc (sal->symtab, sal->line);
- if (pc == 0)
+ if (!find_line_pc (sal->symtab, sal->line, &pc))
error ("No line %d in file \"%s\".",
sal->line, sal->symtab->filename);
sal->pc = pc;
}
+
+ if (sal->section == 0 && sal->symtab != NULL)
+ {
+ struct blockvector *bv;
+ struct block *b;
+ struct symbol *sym;
+ int index;
+
+ bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab);
+ if (bv != NULL)
+ {
+ b = BLOCKVECTOR_BLOCK (bv, index);
+ sym = block_function (b);
+ if (sym != NULL)
+ {
+ fixup_symbol_section (sym, sal->symtab->objfile);
+ sal->section = SYMBOL_BFD_SECTION (sym);
+ }
+ else
+ {
+ /* It really is worthwhile to have the section, so we'll just
+ have to look harder. This case can be executed if we have
+ line numbers but no functions (as can happen in assembly
+ source). */
+
+ struct minimal_symbol *msym;
+
+ msym = lookup_minimal_symbol_by_pc (sal->pc);
+ if (msym)
+ sal->section = SYMBOL_BFD_SECTION (msym);
+ }
+ }
+ }
+}
+
+void
+break_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ break_command_1 (arg, 0, from_tty);
+}
+
+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;
+ int from_tty;
+{
+ break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
+}
+
+static void
+thbreak_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ 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");
}
-void
-break_command (arg, from_tty)
+static void
+stopin_command (arg, from_tty)
char *arg;
int from_tty;
{
- break_command_1 (arg, 0, 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
-tbreak_command (arg, from_tty)
+stopat_command (arg, from_tty)
char *arg;
int from_tty;
{
- break_command_1 (arg, 1, 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) */
static void
-watch_command (arg, from_tty)
+watch_command_1 (arg, accessflag, from_tty)
char *arg;
+ int accessflag;
int from_tty;
{
struct breakpoint *b;
struct symtab_and_line sal;
struct expression *exp;
struct block *exp_valid_block;
- struct value *val;
+ struct value *val, *mark;
+ struct frame_info *frame;
+ struct frame_info *prev_frame = NULL;
+ char *exp_start = NULL;
+ char *exp_end = NULL;
+ char *tok, *end_tok;
+ int toklen;
+ char *cond_start = NULL;
+ char *cond_end = NULL;
+ struct expression *cond = NULL;
+ int i, other_type_used, target_resources_ok = 0;
+ enum bptype bp_type;
+ int mem_cnt = 0;
- sal.pc = 0;
- sal.symtab = NULL;
- sal.line = 0;
+ INIT_SAL (&sal); /* initialize to zeroes */
/* Parse arguments. */
innermost_block = NULL;
- exp = parse_expression (arg);
+ exp_start = arg;
+ exp = parse_exp_1 (&arg, 0, 0);
+ exp_end = arg;
exp_valid_block = innermost_block;
+ mark = value_mark ();
val = evaluate_expression (exp);
release_value (val);
if (VALUE_LAZY (val))
value_fetch_lazy (val);
+ tok = arg;
+ while (*tok == ' ' || *tok == '\t')
+ tok++;
+ end_tok = tok;
+
+ while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
+ end_tok++;
+
+ toklen = end_tok - tok;
+ if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
+ {
+ tok = cond_start = end_tok + 1;
+ cond = parse_exp_1 (&tok, 0, 0);
+ cond_end = tok;
+ }
+ if (*tok)
+ error("Junk at end of command.");
+
+ if (accessflag == 1) bp_type = bp_read_watchpoint;
+ else if (accessflag == 2) bp_type = bp_access_watchpoint;
+ else bp_type = bp_hardware_watchpoint;
+
+ mem_cnt = can_use_hardware_watchpoint (val);
+ if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint)
+ error ("Expression cannot be implemented with read/access watchpoint.");
+ if (mem_cnt != 0) {
+ i = hw_watchpoint_used_count (bp_type, &other_type_used);
+ target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT(
+ bp_type, i + mem_cnt, other_type_used);
+ if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint)
+ error ("Target does not have this type of hardware watchpoint support.");
+ 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);
set_breakpoint_count (breakpoint_count + 1);
b->number = breakpoint_count;
- b->type = bp_watchpoint;
b->disposition = donttouch;
b->exp = exp;
b->exp_valid_block = exp_valid_block;
+ b->exp_string = savestring (exp_start, exp_end - exp_start);
b->val = val;
- b->cond = 0;
- b->cond_string = NULL;
- b->exp_string = savestring (arg, strlen (arg));
+ b->cond = cond;
+ if (cond_start)
+ b->cond_string = savestring (cond_start, cond_end - cond_start);
+ else
+ b->cond_string = 0;
+
+ frame = block_innermost_frame (exp_valid_block);
+ if (frame)
+ {
+ prev_frame = get_prev_frame (frame);
+ b->watchpoint_frame = frame->frame;
+ }
+ else
+ b->watchpoint_frame = (CORE_ADDR)0;
+
+ if (mem_cnt && target_resources_ok > 0)
+ b->type = bp_type;
+ else
+ b->type = bp_watchpoint;
+
+ /* If the expression is "local", then set up a "watchpoint scope"
+ breakpoint at the point where we've left the scope of the watchpoint
+ expression. */
+ if (innermost_block)
+ {
+ if (prev_frame)
+ {
+ struct breakpoint *scope_breakpoint;
+ struct symtab_and_line scope_sal;
+
+ INIT_SAL (&scope_sal); /* initialize to zeroes */
+ scope_sal.pc = get_frame_pc (prev_frame);
+ scope_sal.section = find_pc_overlay (scope_sal.pc);
+
+ scope_breakpoint = set_raw_breakpoint (scope_sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ scope_breakpoint->number = breakpoint_count;
+
+ scope_breakpoint->type = bp_watchpoint_scope;
+ scope_breakpoint->enable = enabled;
+
+ /* Automatically delete the breakpoint when it hits. */
+ scope_breakpoint->disposition = del;
+
+ /* Only break in the proper frame (help with recursion). */
+ scope_breakpoint->frame = prev_frame->frame;
+
+ /* Set the address at which we will stop. */
+ scope_breakpoint->address = get_frame_pc (prev_frame);
+
+ /* The scope breakpoint is related to the watchpoint. We
+ will need to act on them together. */
+ b->related_breakpoint = scope_breakpoint;
+ }
+ }
+ value_free_to_mark (mark);
mention (b);
}
+
+/* Return count of locations need to be watched and can be handled
+ 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,
+ which is meaningless, but could cause errors if one tries to insert a
+ hardware watchpoint for the constant expression. */
+ for ( ; v; v = v->next)
+ {
+ if (v->lval == lval_memory)
+ {
+ 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)
+ return 0;
+ }
+
+ /* The expression itself looks suitable for using a hardware
+ watchpoint, but give the target machine a chance to reject it. */
+ return found_memory_cnt;
+}
+
+static void watch_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ watch_command_1 (arg, 0, from_tty);
+}
+
+static void rwatch_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ watch_command_1 (arg, 1, from_tty);
+}
+
+static void awatch_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ watch_command_1 (arg, 2, from_tty);
+}
+
\f
-/*
- * Helper routine for the until_command routine in infcmd.c. Here
- * because it uses the mechanisms of breakpoints.
- */
+/* Helper routine for the until_command routine in infcmd.c. Here
+ because it uses the mechanisms of breakpoints. */
+
/* ARGSUSED */
void
until_break_command (arg, from_tty)
{
struct symtabs_and_lines sals;
struct symtab_and_line sal;
- FRAME prev_frame = get_prev_frame (selected_frame);
+ struct frame_info *prev_frame = get_prev_frame (selected_frame);
struct breakpoint *breakpoint;
struct cleanup *old_chain;
breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until);
- old_chain = make_cleanup(delete_breakpoint, breakpoint);
+ old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
/* Keep within the current frame */
if (prev_frame)
{
- struct frame_info *fi;
-
- fi = get_frame_info (prev_frame);
- sal = find_pc_line (fi->pc, 0);
- sal.pc = fi->pc;
+ sal = find_pc_line (prev_frame->pc, 0);
+ sal.pc = prev_frame->pc;
breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until);
- make_cleanup(delete_breakpoint, breakpoint);
+ make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
}
- proceed (-1, -1, 0);
+ proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
do_cleanups(old_chain);
}
\f
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. */
#if 0
if (function (p))
{
- struct sal_chain *next
- = (struct sal_chain *)alloca (sizeof (struct sal_chain));
+ struct sal_chain *next = (struct sal_chain *)
+ alloca (sizeof (struct sal_chain));
next->next = sal_chain;
next->sal = get_catch_sal (p);
sal_chain = next;
goto win;
}
#endif
- printf ("No catch clause for exception %s.\n", p);
+ printf_unfiltered ("No catch clause for exception %s.\n", p);
#if 0
win:
#endif
while (*p == ' ' || *p == '\t') p++;
}
}
-#endif /* 0 */
/* This shares a lot of code with `print_frame_label_vars' from stack.c. */
register struct blockvector *bl;
register struct block *block;
int index, have_default = 0;
- struct frame_info *fi;
CORE_ADDR pc;
struct symtabs_and_lines sals;
struct sal_chain *sal_chain = 0;
if (selected_frame == NULL)
error ("No selected frame.");
block = get_frame_block (selected_frame);
- fi = get_frame_info (selected_frame);
- pc = fi->pc;
+ pc = selected_frame->pc;
sals.nelts = 0;
sals.sals = NULL;
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 */
+
/* Commands to deal with catching exceptions. */
+/* Set a breakpoint at the specified callback routine for an
+ exception event callback */
+
static void
-catch_command_1 (arg, tempflag, from_tty)
+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)
+ {
+ 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);
+}
+
+/* Deal with "catch catch" and "catch throw" commands */
+
+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");
+ }
+ }
+}
+
+/* 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*/
+}
+
+
+
+/* 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
+handle_gnu_4_16_catch_command (arg, tempflag, from_tty)
char *arg;
int tempflag;
int from_tty;
char *save_arg;
int i;
- sal.line = sal.pc = sal.end = 0;
- sal.symtab = 0;
+ INIT_SAL (&sal); /* initialize to zeroes */
/* If no arg given, or if first arg is 'if ', all active catch clauses
are breakpointed. */
{
/* 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
}
arg = save_arg;
}
-
- for (i = 0; i < sals.nelts; i++)
+
+ for (i = 0; i < sals.nelts; i++)
+ {
+ sal = sals.sals[i];
+
+ if (from_tty)
+ describe_other_breakpoints (sal.pc, sal.section);
+
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ 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;
+
+ mention (b);
+ }
+
+ if (sals.nelts > 1)
+ {
+ printf_unfiltered ("Multiple breakpoints were set.\n");
+ printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
+ }
+ 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)
{
- sal = sals.sals[i];
-
- if (from_tty)
- describe_other_breakpoints (sal.pc);
-
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->type = bp_breakpoint;
- b->cond = cond;
- b->enable = enabled;
- b->disposition = tempflag ? delete : donttouch;
-
- mention (b);
+ error ("Catch of stop not yet implemented");
}
+
+ /* This doesn't appear to be an event name */
- if (sals.nelts > 1)
+ else
{
- printf ("Multiple breakpoints were set.\n");
- printf ("Use the \"delete\" command to delete unwanted breakpoints.\n");
+ /* 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");
+
}
- free ((PTR)sals.sals);
+}
+
+/* Used by the gui, could be made a worker for other things. */
+
+struct breakpoint *
+set_breakpoint_sal (sal)
+ struct symtab_and_line sal;
+{
+ struct breakpoint *b;
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->type = bp_breakpoint;
+ b->cond = 0;
+ b->thread = -1;
+ return b;
}
#if 0
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
{
- sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line));
+ sals.sals = (struct symtab_and_line *)
+ xmalloc (sizeof (struct symtab_and_line));
+ INIT_SAL (&sal); /* initialize to zeroes */
sal.line = default_breakpoint_line;
sal.symtab = default_breakpoint_symtab;
- sal.pc = 0;
+ 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
- : (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
- && (sal.pc
- ? b->next->address == sal.pc
- : (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;
}
if (found->next) from_tty = 1; /* Always report if deleted more than one */
- if (from_tty) printf ("Deleted breakpoint%s ", found->next ? "s" : "");
+ if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : "");
+ breakpoints_changed ();
while (found)
{
- if (from_tty) printf ("%d ", found->number);
+ if (from_tty) printf_unfiltered ("%d ", found->number);
b1 = found->next;
delete_breakpoint (found);
found = b1;
}
- if (from_tty) putchar ('\n');
+ if (from_tty) putchar_unfiltered ('\n');
}
free ((PTR)sals.sals);
}
\f
-/* Delete breakpoint in BS if they are `delete' breakpoints.
+/* Delete breakpoint in BS if they are `delete' breakpoints and
+ all breakpoints that are marked for deletion, whether hit or not.
This is called after any breakpoint is hit, or after errors. */
void
breakpoint_auto_delete (bs)
bpstat bs;
{
+ struct breakpoint *b, *temp;
+
for (; bs; bs = bs->next)
- if (bs->breakpoint_at && bs->breakpoint_at->disposition == delete)
+ if (bs->breakpoint_at && bs->breakpoint_at->disposition == del
+ && bs->stop)
delete_breakpoint (bs->breakpoint_at);
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ if (b->disposition == del_at_next_stop)
+ delete_breakpoint (b);
+ }
}
/* Delete a breakpoint and clean up all traces of it in the data structures. */
register struct breakpoint *b;
register bpstat bs;
- if (bpt->inserted)
- target_remove_breakpoint(bpt->address, bpt->shadow_contents);
+ 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, 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;
}
- check_duplicates (bpt->address);
+ /* 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)
+ if (bpt->inserted
+ && bpt->type != bp_hardware_watchpoint
+ && bpt->type != bp_read_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->duplicate)
+ if (b->address == bpt->address
+ && b->section == bpt->section
+ && !b->duplicate
+ && b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled)
{
int val;
val = target_insert_breakpoint (b->address, b->shadow_contents);
if (val != 0)
{
- fprintf (stderr, "Cannot insert breakpoint %d:\n", b->number);
+ target_terminal_ours_for_output ();
+ fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
memory_error (val, b->address); /* which bombs us out */
}
else
free (bpt->cond_string);
if (bpt->addr_string != NULL)
free (bpt->addr_string);
+ if (bpt->exp != NULL)
+ free (bpt->exp);
if (bpt->exp_string != NULL)
free (bpt->exp_string);
+ if (bpt->val != NULL)
+ value_free (bpt->val);
if (bpt->source_file != NULL)
free (bpt->source_file);
-
- if (xgdb_verbose && bpt->type == bp_breakpoint)
- printf ("breakpoint #%d deleted\n", bpt->number);
+ 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. */
+ /* 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);
}
-static void
+void
delete_command (arg, from_tty)
char *arg;
int from_tty;
{
+ struct breakpoint *b, *temp;
if (arg == 0)
{
+ int breaks_to_delete = 0;
+
+ /* Delete all breakpoints if no argument.
+ Do not delete internal or call-dummy breakpoints, these
+ have to be deleted with an explicit breakpoint number argument. */
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->type != bp_call_dummy &&
+ b->type != bp_shlib_event &&
+ b->number >= 0)
+ breaks_to_delete = 1;
+ }
+
/* Ask user only if there are some breakpoints to delete. */
if (!from_tty
- || (breakpoint_chain && query ("Delete all breakpoints? ", 0, 0)))
+ || (breaks_to_delete && query ("Delete all breakpoints? ")))
{
- /* No arg; clear all breakpoints. */
- while (breakpoint_chain)
- delete_breakpoint (breakpoint_chain);
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ if (b->type != bp_call_dummy &&
+ b->type != bp_shlib_event &&
+ b->number >= 0)
+ delete_breakpoint (b);
+ }
}
}
else
static int
breakpoint_re_set_one (bint)
- char *bint;
+ PTR bint;
{
struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */
+ struct value *mark;
int i;
struct symtabs_and_lines sals;
char *s;
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. */
save_enable = b->enable;
b->enable = disabled;
+ set_language (b->language);
+ input_radix = b->input_radix;
s = b->addr_string;
sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL);
for (i = 0; i < sals.nelts; i++)
strlen (sals.sals[i].symtab->filename));
b->line_number = sals.sals[i].line;
b->address = sals.sals[i].pc;
-
- check_duplicates (b->address);
+
+ /* Used to check for duplicates here, but that can
+ cause trouble, as it doesn't check for disable
+ breakpoints. */
mention (b);
+
+ /* Might be better to do this just once per breakpoint_re_set,
+ rather than once for every breakpoint. */
+ breakpoints_changed ();
}
+ 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;
case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
innermost_block = NULL;
/* The issue arises of what context to evaluate this in. The same
one as when it was set, but what does that mean when symbols have
particular level, but that's going to be less stable than filenames
or functionnames. */
/* So for now, just use a global context. */
+ if (b->exp)
+ free ((PTR)b->exp);
b->exp = parse_expression (b->exp_string);
b->exp_valid_block = innermost_block;
+ mark = value_mark ();
+ if (b->val)
+ value_free (b->val);
b->val = evaluate_expression (b->exp);
release_value (b->val);
if (VALUE_LAZY (b->val))
if (b->cond_string != NULL)
{
s = b->cond_string;
+ if (b->cond)
+ free ((PTR)b->cond);
b->cond = parse_exp_1 (&s, (struct block *)0, 0);
}
if (b->enable == enabled)
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 */
- case bp_until:
- case bp_finish:
+ /* Delete longjmp breakpoints, they will be reset later by
+ breakpoint_re_set. */
case bp_longjmp:
case bp_longjmp_resume:
delete_breakpoint (b);
break;
+
+ /* This breakpoint is special, it's set up when the inferior
+ starts and we really don't want to touch it. */
+ case bp_shlib_event:
+
+ /* Keep temporary breakpoints, which can be encountered when we step
+ over a dlopen call and SOLIB_ADD is resetting the breakpoints.
+ Otherwise these should have been blown away via the cleanup chain
+ or by breakpoint_init_inferior when we rerun the executable. */
+ case bp_until:
+ case bp_finish:
+ case bp_watchpoint_scope:
+ case bp_call_dummy:
+ case bp_step_resume:
+ break;
}
return 0;
breakpoint_re_set ()
{
struct breakpoint *b, *temp;
+ enum language save_language;
+ int save_input_radix;
static char message1[] = "Error in re-setting breakpoint %d:\n";
char message[sizeof (message1) + 30 /* slop */];
+ save_language = current_language->la_language;
+ save_input_radix = input_radix;
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);
}
-
- create_longjmp_breakpoint("longjmp");
- create_longjmp_breakpoint("_longjmp");
- create_longjmp_breakpoint("siglongjmp");
- create_longjmp_breakpoint(NULL);
+ set_language (save_language);
+ input_radix = save_input_radix;
+
+#ifdef GET_LONGJMP_TARGET
+ create_longjmp_breakpoint ("longjmp");
+ create_longjmp_breakpoint ("_longjmp");
+ create_longjmp_breakpoint ("siglongjmp");
+ create_longjmp_breakpoint ("_siglongjmp");
+ create_longjmp_breakpoint (NULL);
+#endif
#if 0
- /* Took this out (temporaliy at least), since it produces an extra
+ /* Took this out (temporarily at least), since it produces an extra
blank line at startup. This messes up the gdbtests. -PB */
/* Blank line to finish off all those mention() messages we just printed. */
printf_filtered ("\n");
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;
else
printf_filtered ("Will ignore next %d crossings of breakpoint %d.",
count, bptnum);
+ breakpoints_changed ();
return;
}
longest_to_int (value_as_long (parse_and_eval (p))),
from_tty);
printf_filtered ("\n");
+ breakpoints_changed ();
}
\f
/* Call FUNCTION on each of the breakpoints
ALL_BREAKPOINTS (b)
if (b->number == num)
{
+ struct breakpoint *related_breakpoint = b->related_breakpoint;
function (b);
+ if (related_breakpoint)
+ function (related_breakpoint);
goto win;
}
- printf ("No breakpoint number %d.\n", num);
+ printf_unfiltered ("No breakpoint number %d.\n", num);
win:
p = p1;
}
}
+void
+disable_breakpoint (bpt)
+ struct breakpoint *bpt;
+{
+ /* Never disable a watchpoint scope breakpoint; we want to
+ hit them when we leave scope so we can delete both the
+ watchpoint and its scope breakpoint at that time. */
+ if (bpt->type == bp_watchpoint_scope)
+ return;
+
+ bpt->enable = disabled;
+
+ check_duplicates (bpt->address, bpt->section);
+
+ if (modify_breakpoint_hook)
+ modify_breakpoint_hook (bpt);
+}
+
+/* ARGSUSED */
static void
-enable_breakpoint (bpt)
+disable_command (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ register struct breakpoint *bpt;
+ if (args == 0)
+ 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:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+ disable_breakpoint (bpt);
+ default:
+ continue;
+ }
+ else
+ map_breakpoint_numbers (args, disable_breakpoint);
+}
+
+static void
+do_enable_breakpoint (bpt, disposition)
struct breakpoint *bpt;
+ enum bpdisp disposition;
{
- FRAME save_selected_frame = NULL;
+ struct frame_info *save_selected_frame = NULL;
int save_selected_frame_level = -1;
-
- bpt->enable = enabled;
+ int target_resources_ok, other_type_used;
+ struct value *mark;
- if (xgdb_verbose && bpt->type == bp_breakpoint)
- printf ("breakpoint #%d enabled\n", bpt->number);
+ if (bpt->type == bp_hardware_breakpoint)
+ {
+ int i;
+ i = hw_breakpoint_used_count();
+ target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT(
+ bp_hardware_breakpoint, i+1, 0);
+ if (target_resources_ok == 0)
+ error ("No hardware breakpoint support in the target.");
+ else if (target_resources_ok < 0)
+ error ("Hardware breakpoints used exceeds limit.");
+ }
+
+ bpt->enable = enabled;
+ bpt->disposition = disposition;
+ check_duplicates (bpt->address, bpt->section);
+ breakpoints_changed ();
- check_duplicates (bpt->address);
- if (bpt->type == bp_watchpoint)
+ if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint ||
+ bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint)
{
if (bpt->exp_valid_block != NULL)
{
- FRAME fr = within_scope (bpt->exp_valid_block);
+ struct frame_info *fr =
+
+ /* 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 ("\
bpt->enable = disabled;
return;
}
+
save_selected_frame = selected_frame;
save_selected_frame_level = selected_frame_level;
select_frame (fr, -1);
}
value_free (bpt->val);
-
+ mark = value_mark ();
bpt->val = evaluate_expression (bpt->exp);
release_value (bpt->val);
if (VALUE_LAZY (bpt->val))
value_fetch_lazy (bpt->val);
+ if (bpt->type == bp_hardware_watchpoint ||
+ bpt->type == bp_read_watchpoint ||
+ bpt->type == bp_access_watchpoint)
+ {
+ int i = hw_watchpoint_used_count (bpt->type, &other_type_used);
+ int mem_cnt = can_use_hardware_watchpoint (bpt->val);
+
+ /* Hack around 'unused var' error for some targets here */
+ (void) mem_cnt, i;
+ target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT(
+ bpt->type, i + mem_cnt, other_type_used);
+ /* we can consider of type is bp_hardware_watchpoint, convert to
+ bp_watchpoint in the following condition */
+ if (target_resources_ok < 0)
+ {
+ printf_filtered("\
+Cannot enable watchpoint %d because target watch resources\n\
+have been allocated for other watchpoints.\n", bpt->number);
+ bpt->enable = disabled;
+ value_free_to_mark (mark);
+ return;
+ }
+ }
+
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)
+ modify_breakpoint_hook (bpt);
}
-/* ARGSUSED */
-static void
-enable_command (args, from_tty)
- char *args;
- int from_tty;
-{
- struct breakpoint *bpt;
- if (args == 0)
- ALL_BREAKPOINTS (bpt)
- switch (bpt->type)
- {
- case bp_breakpoint:
- case bp_watchpoint:
- enable_breakpoint (bpt);
- default:
- continue;
- }
- else
- map_breakpoint_numbers (args, enable_breakpoint);
-}
-
-static void
-disable_breakpoint (bpt)
+void
+enable_breakpoint (bpt)
struct breakpoint *bpt;
{
- bpt->enable = disabled;
-
- if (xgdb_verbose && bpt->type == bp_breakpoint)
- printf_filtered ("breakpoint #%d disabled\n", bpt->number);
-
- check_duplicates (bpt->address);
+ do_enable_breakpoint (bpt, bpt->disposition);
}
+/* The enable command enables the specified breakpoints (or all defined
+ breakpoints) so they once again become (or continue to be) effective
+ in stopping the inferior. */
+
/* ARGSUSED */
static void
-disable_command (args, from_tty)
+enable_command (args, from_tty)
char *args;
int from_tty;
{
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:
- disable_breakpoint (bpt);
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+ enable_breakpoint (bpt);
default:
continue;
}
else
- map_breakpoint_numbers (args, disable_breakpoint);
+ map_breakpoint_numbers (args, enable_breakpoint);
}
static void
enable_once_breakpoint (bpt)
struct breakpoint *bpt;
{
- bpt->enable = enabled;
- bpt->disposition = disable;
-
- check_duplicates (bpt->address);
+ do_enable_breakpoint (bpt, disable);
}
/* ARGSUSED */
enable_delete_breakpoint (bpt)
struct breakpoint *bpt;
{
- bpt->enable = enabled;
- bpt->disposition = delete;
-
- check_duplicates (bpt->address);
+ do_enable_breakpoint (bpt, del);
}
/* ARGSUSED */
map_breakpoint_numbers (args, enable_delete_breakpoint);
}
\f
-/*
- * Use default_breakpoint_'s, or nothing if they aren't valid.
- */
+/* Use default_breakpoint_'s, or nothing if they aren't valid. */
+
struct symtabs_and_lines
decode_line_spec_1 (string, funfirstline)
char *string;
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. */
breakpoint_count = 0;
add_com ("ignore", class_breakpoint, ignore_command,
- "Set ignore-count of breakpoint number N to COUNT.");
+ "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\
add_com ("condition", class_breakpoint, condition_command,
"Specify breakpoint number N to break only if COND is true.\n\
-N is an integer; COND is an expression to be evaluated whenever\n\
-breakpoint N is reached. ");
+Usage is `condition N COND', where N is an integer and COND is an\n\
+expression to be evaluated whenever breakpoint N is reached. ");
add_com ("tbreak", class_breakpoint, tbreak_command,
"Set a temporary breakpoint. Args like \"break\" command.\n\
-Like \"break\" except the breakpoint is only enabled temporarily,\n\
-so it will be disabled when hit. Equivalent to \"break\" followed\n\
-by using \"enable once\" on the breakpoint number.");
+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\
+Like \"break\" except the breakpoint requires hardware support,\n\
+some target hardware may not have this support.");
+
+ add_com ("thbreak", class_breakpoint, thbreak_command,
+ "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
+Like \"hbreak\" except the breakpoint is only temporary,\n\
+so it will be deleted when hit.");
add_prefix_cmd ("enable", class_breakpoint, enable_command,
"Enable some breakpoints.\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);
add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command,
"Enable some breakpoints.\n\
add_cmd ("once", no_class, enable_once_command,
"Enable breakpoints for one hit. Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it becomes disabled.\n\
-See the \"tbreak\" command which sets a breakpoint and enables it once.",
+If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
&enablebreaklist);
add_cmd ("delete", no_class, enable_delete_command,
add_cmd ("once", no_class, enable_once_command,
"Enable breakpoints for one hit. Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it becomes disabled.\n\
-See the \"tbreak\" command which sets a breakpoint and enables it once.",
+If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
&enablelist);
add_prefix_cmd ("disable", class_breakpoint, disable_command,
&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\
&deletelist);
add_com ("clear", class_breakpoint, clear_command,
- "Clear breakpoint at specified line or function.\n\
+ concat ("Clear breakpoint at specified line or function.\n\
Argument may be line number, function name, or \"*\" and an address.\n\
If line number is specified, all breakpoints in that line are cleared.\n\
If function is specified, breakpoints at beginning of function are cleared.\n\
-If an address is specified, breakpoints at that address are cleared.\n\n\
-With no argument, clears all breakpoints in the line that the selected frame\n\
+If an address is specified, breakpoints at that address are cleared.\n\n",
+"With no argument, clears all breakpoints in the line that the selected frame\n\
is executing in.\n\
\n\
-See also the \"delete\" command which clears breakpoints by number.");
+See also the \"delete\" command which clears breakpoints by number.", NULL));
add_com ("break", class_breakpoint, break_command,
- "Set breakpoint at specified line or function.\n\
+ concat ("Set breakpoint at specified line or function.\n\
Argument may be line number, function name, or \"*\" and an address.\n\
If line number is specified, break at start of code for that line.\n\
If function is specified, break at start of code for that function.\n\
-If an address is specified, break at that exact address.\n\
-With no arg, uses current execution address of selected stack frame.\n\
+If an address is specified, break at 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.");
+Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL));
add_com_alias ("b", "break", class_run, 1);
add_com_alias ("br", "break", class_run, 1);
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 \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
+ }
+
add_info ("breakpoints", breakpoints_info,
- "Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+The \"Type\" column indicates one of:\n\
+\tbreakpoint - normal breakpoint\n\
+\twatchpoint - watchpoint\n\
+The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
+breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
+address and file/line number respectively.\n\n",
+"Convenience variable \"$_\" and default examine address for \"x\"\n\
+are set to the address of the last breakpoint listed.\n\n\
+Convenience variable \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
+
+ if (xdb_commands)
+ add_com("lb", class_breakpoint, breakpoints_info,
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
The \"Type\" column indicates one of:\n\
\tbreakpoint - normal breakpoint\n\
\twatchpoint - watchpoint\n\
The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n\
-Convenience variable \"$_\" and default examine address for \"x\"\n\
+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.");
+breakpoint set.", NULL));
#if MAINTENANCE_CMDS
add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints,
- "Status of all breakpoints, or breakpoint number NUMBER.\n\
+ concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
The \"Type\" column indicates one of:\n\
\tbreakpoint - normal breakpoint\n\
\twatchpoint - watchpoint\n\
\tlongjmp - internal breakpoint used to step through longjmp()\n\
\tlongjmp resume - internal breakpoint at the target of longjmp()\n\
\tuntil - internal breakpoint used by the \"until\" command\n\
-\tfinish - internal breakpoint used by the \"finish\" command\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+\tfinish - internal breakpoint used by the \"finish\" command\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 \"$_\" and default examine address for \"x\"\n\
+address and file/line number respectively.\n\n",
+"Convenience variable \"$_\" 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.",
+breakpoint set.", NULL),
&maintenanceinfolist);
#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''.");
-}
+ add_com ("rwatch", class_breakpoint, rwatch_command,
+ "Set a read watchpoint for an expression.\n\
+A watchpoint stops execution of your program whenever the value of\n\
+an expression is read.");
-/* OK, when we call objfile_relocate, we need to relocate breakpoints
- too. breakpoint_re_set is not a good choice--for example, if
- addr_string contains just a line number without a file name the
- breakpoint might get set in a different file. In general, there is
- no need to go all the way back to the user's string (though this might
- work if some effort were made to canonicalize it), since symtabs and
- everything except addresses are still valid.
+ add_com ("awatch", class_breakpoint, awatch_command,
+ "Set a watchpoint for an expression.\n\
+A watchpoint stops execution of your program whenever the value of\n\
+an expression is either read or written.");
- Probably the best way to solve this is to have each breakpoint save
- the objfile and the section number that was used to set it (if set
- by "*addr", probably it is best to use find_pc_line to get a symtab
- and use the objfile and block_line_section for that symtab). Then
- objfile_relocate can call fixup_breakpoints with the objfile and
- the new_offsets, and it can relocate only the appropriate breakpoints. */
+ add_info ("watchpoints", breakpoints_info,
+ "Synonym for ``info breakpoints''.");
-#ifdef IBM6000_TARGET
-/* But for now, just kludge it based on the concept that before an
- objfile is relocated the breakpoint is below 0x10000000, and afterwards
- it is higher, so that way we only relocate each breakpoint once. */
-void
-fixup_breakpoints (low, high, delta)
- CORE_ADDR low;
- CORE_ADDR high;
- CORE_ADDR delta;
-{
- struct breakpoint *b;
+ 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);
- ALL_BREAKPOINTS (b)
- {
- if (b->address >= low && b->address <= high)
- b->address += delta;
- }
+ can_use_hw_watchpoints = 1;
}
-#endif
projects / thirdparty / binutils-gdb.git / blobdiff