Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
- 2008, 2009, 2010 Free Software Foundation, Inc.
+ 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
This file is part of GDB.
#include "language.h"
#include "gdb_string.h"
#include "demangle.h"
+#include "filenames.h"
#include "annotate.h"
#include "symfile.h"
#include "objfiles.h"
#include "jit.h"
#include "xml-syscall.h"
#include "parser-defs.h"
+#include "cli/cli-utils.h"
+#include "continuations.h"
/* readline include files */
#include "readline/readline.h"
#undef savestring
#include "mi/mi-common.h"
+#include "python/python.h"
-/* Arguments to pass as context to some catch command handlers. */
-#define CATCH_PERMANENT ((void *) (uintptr_t) 0)
-#define CATCH_TEMPORARY ((void *) (uintptr_t) 1)
-
-/* Prototypes for local functions. */
+/* Prototypes for local functions. */
static void enable_delete_command (char *, int);
static int breakpoint_re_set_one (void *);
+static void breakpoint_re_set_default (struct breakpoint *);
+
static void clear_command (char *, int);
static void catch_command (char *, int);
static void mention (struct breakpoint *);
-/* This function is used in gdbtk sources and thus can not be made static. */
+static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *,
+ enum bptype,
+ const struct breakpoint_ops *);
+/* This function is used in gdbtk sources and thus can not be made
+ static. */
struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch,
- struct symtab_and_line,
- enum bptype);
+ struct symtab_and_line,
+ enum bptype,
+ const struct breakpoint_ops *);
+
+static struct breakpoint *
+ momentary_breakpoint_from_master (struct breakpoint *orig,
+ enum bptype type,
+ const struct breakpoint_ops *ops);
static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int);
static int watchpoint_locations_match (struct bp_location *loc1,
struct bp_location *loc2);
+static int breakpoint_location_address_match (struct bp_location *bl,
+ struct address_space *aspace,
+ CORE_ADDR addr);
+
static void breakpoints_info (char *, int);
static void watchpoints_info (char *, int);
-static int breakpoint_1 (int, int, int (*) (const struct breakpoint *));
+static int breakpoint_1 (char *, int,
+ int (*) (const struct breakpoint *));
static int breakpoint_cond_eval (void *);
static void condition_command (char *, int);
-static int get_number_trailer (char **, int);
-
typedef enum
{
mark_inserted,
static int remove_breakpoint (struct bp_location *, insertion_state_t);
static int remove_breakpoint_1 (struct bp_location *, insertion_state_t);
-static enum print_stop_action print_it_typical (bpstat);
-
static enum print_stop_action print_bp_stop_message (bpstat bs);
static int watchpoint_check (void *);
static int hw_breakpoint_used_count (void);
-static int hw_watchpoint_used_count (enum bptype, int *);
+static int hw_watchpoint_use_count (struct breakpoint *);
+
+static int hw_watchpoint_used_count_others (struct breakpoint *except,
+ enum bptype type,
+ int *other_type_used);
static void hbreak_command (char *, int);
static void thbreak_command (char *, int);
-static void do_enable_breakpoint (struct breakpoint *, enum bpdisp);
+static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp);
static void stop_command (char *arg, int from_tty);
static void tcatch_command (char *arg, int from_tty);
-static void ep_skip_leading_whitespace (char **s);
-
static void detach_single_step_breakpoints (void);
static int single_step_breakpoint_inserted_here_p (struct address_space *,
static int is_hardware_watchpoint (const struct breakpoint *bpt);
-static int is_watchpoint (const struct breakpoint *bpt);
-
static void insert_breakpoint_locations (void);
static int syscall_catchpoint_p (struct breakpoint *b);
static void trace_pass_command (char *, int);
+static int is_masked_watchpoint (const struct breakpoint *b);
+
/* Assuming we're creating a static tracepoint, does S look like a
static tracepoint marker spec ("-m MARKER_ID")? */
#define is_marker_spec(s) \
(s != NULL && strncmp (s, "-m", 2) == 0 && ((s)[2] == ' ' || (s)[2] == '\t'))
+/* The abstract base class all breakpoint_ops structures inherit
+ from. */
+static struct breakpoint_ops base_breakpoint_ops;
+
+/* The breakpoint_ops structure to be inherited by all breakpoint_ops
+ that are implemented on top of software or hardware breakpoints
+ (user breakpoints, internal and momentary breakpoints, etc.). */
+static struct breakpoint_ops bkpt_base_breakpoint_ops;
+
+/* Internal breakpoints class type. */
+static struct breakpoint_ops internal_breakpoint_ops;
+
+/* Momentary breakpoints class type. */
+static struct breakpoint_ops momentary_breakpoint_ops;
+
+/* The breakpoint_ops structure to be used in regular user created
+ breakpoints. */
+struct breakpoint_ops bkpt_breakpoint_ops;
+
/* A reference-counted struct command_line. This lets multiple
breakpoints share a single command list. */
struct counted_command_line
static int breakpoint_proceeded;
-static const char *
+const char *
bpdisp_text (enum bpdisp disp)
{
- /* NOTE: the following values are a part of MI protocol and represent
- values of 'disp' field returned when inferior stops at a breakpoint. */
+ /* NOTE: the following values are a part of MI protocol and
+ represent values of 'disp' field returned when inferior stops at
+ a breakpoint. */
static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"};
return bpdisps[(int) disp];
}
-/* Prototypes for exported functions. */
+/* Prototypes for exported functions. */
/* If FALSE, gdb will not use hardware support for watchpoints, even
- if such is available. */
+ if such is available. */
static int can_use_hw_watchpoints;
static void
struct cmd_list_element *c,
const char *value)
{
- fprintf_filtered (file, _("\
-Debugger's willingness to use watchpoint hardware is %s.\n"),
+ fprintf_filtered (file,
+ _("Debugger's willingness to use "
+ "watchpoint hardware is %s.\n"),
value);
}
/* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints.
If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints
- for unrecognized breakpoint locations.
+ for unrecognized breakpoint locations.
If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */
static enum auto_boolean pending_break_support;
static void
struct cmd_list_element *c,
const char *value)
{
- fprintf_filtered (file, _("\
-Debugger's behavior regarding pending breakpoints is %s.\n"),
+ fprintf_filtered (file,
+ _("Debugger's behavior regarding "
+ "pending breakpoints is %s.\n"),
value);
}
/* If 1, gdb will automatically use hardware breakpoints for breakpoints
- set with "break" but falling in read-only memory.
+ set with "break" but falling in read-only memory.
If 0, gdb will warn about such breakpoints, but won't automatically
use hardware breakpoints. */
static int automatic_hardware_breakpoints;
struct cmd_list_element *c,
const char *value)
{
- fprintf_filtered (file, _("\
-Automatic usage of hardware breakpoints is %s.\n"),
+ fprintf_filtered (file,
+ _("Automatic usage of hardware breakpoints is %s.\n"),
value);
}
struct cmd_list_element *c, const char *value)
{
if (always_inserted_mode == always_inserted_auto)
- fprintf_filtered (file, _("\
-Always inserted breakpoint mode is %s (currently %s).\n"),
+ fprintf_filtered (file,
+ _("Always inserted breakpoint "
+ "mode is %s (currently %s).\n"),
value,
breakpoints_always_inserted_mode () ? "on" : "off");
else
- fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value);
+ fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"),
+ value);
}
int
/* Are overlay event breakpoints enabled? */
static int overlay_events_enabled;
+/* See description in breakpoint.h. */
+int target_exact_watchpoints = 0;
+
/* Walk the following statement or block through all breakpoints.
- ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
- breakpoint. */
+ ALL_BREAKPOINTS_SAFE does so even if the statement deletes the
+ current breakpoint. */
#define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
B ? (TMP=B->next, 1): 0; \
B = TMP)
-/* Similar iterator for the low-level breakpoints. SAFE variant is not
- provided so update_global_location_list must not be called while executing
- the block of ALL_BP_LOCATIONS. */
+/* Similar iterator for the low-level breakpoints. SAFE variant is
+ not provided so update_global_location_list must not be called
+ while executing the block of ALL_BP_LOCATIONS. */
#define ALL_BP_LOCATIONS(B,BP_TMP) \
for (BP_TMP = bp_location; \
static unsigned bp_location_count;
-/* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and ADDRESS
- for the current elements of BP_LOCATION which get a valid result from
- bp_location_has_shadow. You can use it for roughly limiting the subrange of
- BP_LOCATION to scan for shadow bytes for an address you need to read. */
+/* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and
+ ADDRESS for the current elements of BP_LOCATION which get a valid
+ result from bp_location_has_shadow. You can use it for roughly
+ limiting the subrange of BP_LOCATION to scan for shadow bytes for
+ an address you need to read. */
static CORE_ADDR bp_location_placed_address_before_address_max;
-/* Maximum offset plus alignment between
- bp_target_info.PLACED_ADDRESS + bp_target_info.SHADOW_LEN and ADDRESS for
- the current elements of BP_LOCATION which get a valid result from
- bp_location_has_shadow. You can use it for roughly limiting the subrange of
- BP_LOCATION to scan for shadow bytes for an address you need to read. */
+/* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS
+ + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of
+ BP_LOCATION which get a valid result from bp_location_has_shadow.
+ You can use it for roughly limiting the subrange of BP_LOCATION to
+ scan for shadow bytes for an address you need to read. */
static CORE_ADDR bp_location_shadow_len_after_address_max;
-/* The locations that no longer correspond to any breakpoint,
- unlinked from bp_location array, but for which a hit
- may still be reported by a target. */
+/* The locations that no longer correspond to any breakpoint, unlinked
+ from bp_location array, but for which a hit may still be reported
+ by a target. */
VEC(bp_location_p) *moribund_locations = NULL;
/* Number of last breakpoint made. */
prev_breakpoint_count = rbreak_start_breakpoint_count;
}
-/* Used in run_command to zero the hit count when a new run starts. */
+/* Used in run_command to zero the hit count when a new run starts. */
void
clear_breakpoint_hit_counts (void)
/* 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
+ If default_breakpoint_valid is zero, the other three are
not valid, and "break" with no arg is an error.
This set by print_stack_frame, which calls set_default_breakpoint. */
struct program_space *default_breakpoint_pspace;
\f
-/* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
- Advance *PP after the string and any trailing whitespace.
-
- Currently the string can either be a number or "$" followed by the name
- of a convenience variable. Making it an expression wouldn't work well
- for map_breakpoint_numbers (e.g. "4 + 5 + 6").
-
- If the string is a NULL pointer, that denotes the last breakpoint.
-
- TRAILER is a character which can be found after the number; most
- commonly this is `-'. If you don't want a trailer, use \0. */
-static int
-get_number_trailer (char **pp, int trailer)
-{
- int retval = 0; /* default */
- char *p = *pp;
-
- if (p == NULL)
- /* Empty line means refer to the last breakpoint. */
- return breakpoint_count;
- else if (*p == '$')
- {
- /* Make a copy of the name, so we can null-terminate it
- to pass to lookup_internalvar(). */
- char *varname;
- char *start = ++p;
- LONGEST val;
-
- while (isalnum (*p) || *p == '_')
- p++;
- varname = (char *) alloca (p - start + 1);
- strncpy (varname, start, p - start);
- varname[p - start] = '\0';
- if (get_internalvar_integer (lookup_internalvar (varname), &val))
- retval = (int) val;
- else
- {
- printf_filtered (_("Convenience variable must have integer value.\n"));
- retval = 0;
- }
- }
- else
- {
- if (*p == '-')
- ++p;
- while (*p >= '0' && *p <= '9')
- ++p;
- if (p == *pp)
- /* There is no number here. (e.g. "cond a == b"). */
- {
- /* Skip non-numeric token */
- while (*p && !isspace((int) *p))
- ++p;
- /* Return zero, which caller must interpret as error. */
- retval = 0;
- }
- else
- retval = atoi (*pp);
- }
- if (!(isspace (*p) || *p == '\0' || *p == trailer))
- {
- /* Trailing junk: return 0 and let caller print error msg. */
- while (!(isspace (*p) || *p == '\0' || *p == trailer))
- ++p;
- retval = 0;
- }
- while (isspace (*p))
- p++;
- *pp = p;
- return retval;
-}
-
-
-/* Like get_number_trailer, but don't allow a trailer. */
-int
-get_number (char **pp)
-{
- return get_number_trailer (pp, '\0');
-}
-
-/* Parse a number or a range.
- * A number will be of the form handled by get_number.
- * A range will be of the form <number1> - <number2>, and
- * will represent all the integers between number1 and number2,
- * inclusive.
- *
- * While processing a range, this fuction is called iteratively;
- * At each call it will return the next value in the range.
- *
- * At the beginning of parsing a range, the char pointer PP will
- * be advanced past <number1> and left pointing at the '-' token.
- * Subsequent calls will not advance the pointer until the range
- * is completed. The call that completes the range will advance
- * pointer PP past <number2>.
- */
-
-int
-get_number_or_range (char **pp)
-{
- static int last_retval, end_value;
- static char *end_ptr;
- static int in_range = 0;
-
- if (**pp != '-')
- {
- /* Default case: pp is pointing either to a solo number,
- or to the first number of a range. */
- last_retval = get_number_trailer (pp, '-');
- if (**pp == '-')
- {
- char **temp;
-
- /* This is the start of a range (<number1> - <number2>).
- Skip the '-', parse and remember the second number,
- and also remember the end of the final token. */
-
- temp = &end_ptr;
- end_ptr = *pp + 1;
- while (isspace ((int) *end_ptr))
- end_ptr++; /* skip white space */
- end_value = get_number (temp);
- if (end_value < last_retval)
- {
- error (_("inverted range"));
- }
- else if (end_value == last_retval)
- {
- /* degenerate range (number1 == number2). Advance the
- token pointer so that the range will be treated as a
- single number. */
- *pp = end_ptr;
- }
- else
- in_range = 1;
- }
- }
- else if (! in_range)
- error (_("negative value"));
- else
- {
- /* pp points to the '-' that betokens a range. All
- number-parsing has already been done. Return the next
- integer value (one greater than the saved previous value).
- Do not advance the token pointer 'pp' until the end of range
- is reached. */
-
- if (++last_retval == end_value)
- {
- /* End of range reached; advance token pointer. */
- *pp = end_ptr;
- in_range = 0;
- }
- }
- return last_retval;
-}
-
/* Return the breakpoint with the specified number, or NULL
if the number does not refer to an existing breakpoint. */
set_breakpoint_condition (struct breakpoint *b, char *exp,
int from_tty)
{
- struct bp_location *loc = b->loc;
+ xfree (b->cond_string);
+ b->cond_string = NULL;
- for (; loc; loc = loc->next)
+ if (is_watchpoint (b))
{
- xfree (loc->cond);
- loc->cond = NULL;
+ struct watchpoint *w = (struct watchpoint *) b;
+
+ xfree (w->cond_exp);
+ w->cond_exp = NULL;
+ }
+ else
+ {
+ struct bp_location *loc;
+
+ for (loc = b->loc; loc; loc = loc->next)
+ {
+ xfree (loc->cond);
+ loc->cond = NULL;
+ }
}
- xfree (b->cond_string);
- b->cond_string = NULL;
- xfree (b->cond_exp);
- b->cond_exp = NULL;
if (*exp == 0)
{
if (is_watchpoint (b))
{
+ struct watchpoint *w = (struct watchpoint *) b;
+
innermost_block = NULL;
arg = exp;
- b->cond_exp = parse_exp_1 (&arg, 0, 0);
+ w->cond_exp = parse_exp_1 (&arg, 0, 0);
if (*arg)
error (_("Junk at end of expression"));
- b->cond_exp_valid_block = innermost_block;
+ w->cond_exp_valid_block = innermost_block;
}
else
{
+ struct bp_location *loc;
+
for (loc = b->loc; loc; loc = loc->next)
{
arg = exp;
}
}
breakpoints_changed ();
- observer_notify_breakpoint_modified (b->number);
+ observer_notify_breakpoint_modified (b);
}
/* condition N EXP -- set break condition of breakpoint N to EXP. */
ALL_BREAKPOINTS (b)
if (b->number == bnum)
{
+ /* Check if this breakpoint has a Python object assigned to
+ it, and if it has a definition of the "stop"
+ method. This method and conditions entered into GDB from
+ the CLI are mutually exclusive. */
+ if (b->py_bp_object
+ && gdbpy_breakpoint_has_py_cond (b->py_bp_object))
+ error (_("Cannot set a condition where a Python 'stop' "
+ "method has been defined in the breakpoint."));
set_breakpoint_condition (b, p, from_tty);
return;
}
/* Check that COMMAND do not contain commands that are suitable
only for tracepoints and not suitable for ordinary breakpoints.
- Throw if any such commands is found.
-*/
+ Throw if any such commands is found. */
+
static void
check_no_tracepoint_commands (struct command_line *commands)
{
int i;
if (c->control_type == while_stepping_control)
- error (_("The 'while-stepping' command can only be used for tracepoints"));
+ error (_("The 'while-stepping' command can "
+ "only be used for tracepoints"));
for (i = 0; i < c->body_count; ++i)
check_no_tracepoint_commands ((c->body_list)[i]);
/* Not that command parsing removes leading whitespace and comment
- lines and also empty lines. So, we only need to check for
+ lines and also empty lines. So, we only need to check for
command directly. */
if (strstr (c->line, "collect ") == c->line)
error (_("The 'collect' command can only be used for tracepoints"));
/* Encapsulate tests for different types of tracepoints. */
+static int
+is_tracepoint_type (enum bptype type)
+{
+ return (type == bp_tracepoint
+ || type == bp_fast_tracepoint
+ || type == bp_static_tracepoint);
+}
+
int
is_tracepoint (const struct breakpoint *b)
{
- return (b->type == bp_tracepoint
- || b->type == bp_fast_tracepoint
- || b->type == bp_static_tracepoint);
+ return is_tracepoint_type (b->type);
}
-
-/* A helper function that validsates that COMMANDS are valid for a
+
+/* A helper function that validates that COMMANDS are valid for a
breakpoint. This function will throw an exception if a problem is
found. */
{
if (is_tracepoint (b))
{
- /* We need to verify that each top-level element of commands
- is valid for tracepoints, that there's at most one while-stepping
- element, and that while-stepping's body has valid tracing commands
- excluding nested while-stepping. */
+ /* We need to verify that each top-level element of commands is
+ valid for tracepoints, that there's at most one
+ while-stepping element, and that while-stepping's body has
+ valid tracing commands excluding nested while-stepping. */
struct command_line *c;
struct command_line *while_stepping = 0;
for (c = commands; c; c = c->next)
if (c->control_type == while_stepping_control)
{
if (b->type == bp_fast_tracepoint)
- error (_("\
-The 'while-stepping' command cannot be used for fast tracepoint"));
+ error (_("The 'while-stepping' command "
+ "cannot be used for fast tracepoint"));
else if (b->type == bp_static_tracepoint)
- error (_("\
-The 'while-stepping' command cannot be used for static tracepoint"));
+ error (_("The 'while-stepping' command "
+ "cannot be used for static tracepoint"));
if (while_stepping)
- error (_("The 'while-stepping' command can be used only once"));
+ error (_("The 'while-stepping' command "
+ "can be used only once"));
else
while_stepping = c;
}
}
/* Set the command list of B to COMMANDS. If breakpoint is tracepoint,
- validate that only allowed commands are included.
-*/
+ validate that only allowed commands are included. */
void
-breakpoint_set_commands (struct breakpoint *b, struct command_line *commands)
+breakpoint_set_commands (struct breakpoint *b,
+ struct command_line *commands)
{
validate_commands_for_breakpoint (b, commands);
decref_counted_command_line (&b->commands);
b->commands = alloc_counted_command_line (commands);
breakpoints_changed ();
- observer_notify_breakpoint_modified (b->number);
+ observer_notify_breakpoint_modified (b);
+}
+
+/* Set the internal `silent' flag on the breakpoint. Note that this
+ is not the same as the "silent" that may appear in the breakpoint's
+ commands. */
+
+void
+breakpoint_set_silent (struct breakpoint *b, int silent)
+{
+ int old_silent = b->silent;
+
+ b->silent = silent;
+ if (old_silent != silent)
+ observer_notify_breakpoint_modified (b);
+}
+
+/* Set the thread for this breakpoint. If THREAD is -1, make the
+ breakpoint work for any thread. */
+
+void
+breakpoint_set_thread (struct breakpoint *b, int thread)
+{
+ int old_thread = b->thread;
+
+ b->thread = thread;
+ if (old_thread != thread)
+ observer_notify_breakpoint_modified (b);
+}
+
+/* Set the task for this breakpoint. If TASK is 0, make the
+ breakpoint work for any task. */
+
+void
+breakpoint_set_task (struct breakpoint *b, int task)
+{
+ int old_task = b->task;
+
+ b->task = task;
+ if (old_task != task)
+ observer_notify_breakpoint_modified (b);
}
void
struct cleanup *old_chain;
char *str;
- str = xstrprintf (_("Type commands for breakpoint(s) %s, one per line."),
+ str = xstrprintf (_("Type commands for breakpoint(s) "
+ "%s, one per line."),
info->arg);
old_chain = make_cleanup (xfree, str);
decref_counted_command_line (&b->commands);
b->commands = info->cmd;
breakpoints_changed ();
- observer_notify_breakpoint_modified (b->number);
+ observer_notify_breakpoint_modified (b);
}
}
static void
-commands_command_1 (char *arg, int from_tty, struct command_line *control)
+commands_command_1 (char *arg, int from_tty,
+ struct command_line *control)
{
struct cleanup *cleanups;
struct commands_info info;
if (arg == NULL || !*arg)
{
if (breakpoint_count - prev_breakpoint_count > 1)
- arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, breakpoint_count);
+ arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1,
+ breakpoint_count);
else if (breakpoint_count > 0)
arg = xstrprintf ("%d", breakpoint_count);
else
if (!bl->inserted)
return 0;
if (bl->target_info.shadow_len == 0)
- /* bp isn't valid, or doesn't shadow memory. */
+ /* BL isn't valid, or doesn't shadow memory. */
return 0;
return 1;
}
by replacing any memory breakpoints with their shadowed contents.
The range of shadowed area by each bp_location is:
- b->address - bp_location_placed_address_before_address_max
- up to b->address + bp_location_shadow_len_after_address_max
+ bl->address - bp_location_placed_address_before_address_max
+ up to bl->address + bp_location_shadow_len_after_address_max
The range we were requested to resolve shadows for is:
memaddr ... memaddr + len
Thus the safe cutoff boundaries for performance optimization are
- memaddr + len <= b->address - bp_location_placed_address_before_address_max
+ memaddr + len <= (bl->address
+ - bp_location_placed_address_before_address_max)
and:
- b->address + bp_location_shadow_len_after_address_max <= memaddr */
+ bl->address + bp_location_shadow_len_after_address_max <= memaddr */
void
breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len)
{
- /* Left boundary, right boundary and median element of our binary search. */
+ /* Left boundary, right boundary and median element of our binary
+ search. */
unsigned bc_l, bc_r, bc;
- /* Find BC_L which is a leftmost element which may affect BUF content. It is
- safe to report lower value but a failure to report higher one. */
+ /* Find BC_L which is a leftmost element which may affect BUF
+ content. It is safe to report lower value but a failure to
+ report higher one. */
bc_l = 0;
bc_r = bp_location_count;
while (bc_l + 1 < bc_r)
{
- struct bp_location *b;
+ struct bp_location *bl;
bc = (bc_l + bc_r) / 2;
- b = bp_location[bc];
+ bl = bp_location[bc];
- /* Check first B->ADDRESS will not overflow due to the added constant.
- Then advance the left boundary only if we are sure the BC element can
- in no way affect the BUF content (MEMADDR to MEMADDR + LEN range).
+ /* Check first BL->ADDRESS will not overflow due to the added
+ constant. Then advance the left boundary only if we are sure
+ the BC element can in no way affect the BUF content (MEMADDR
+ to MEMADDR + LEN range).
- Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety offset so that
- we cannot miss a breakpoint with its shadow range tail still reaching
- MEMADDR. */
+ Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety
+ offset so that we cannot miss a breakpoint with its shadow
+ range tail still reaching MEMADDR. */
- if (b->address + bp_location_shadow_len_after_address_max >= b->address
- && b->address + bp_location_shadow_len_after_address_max <= memaddr)
+ if ((bl->address + bp_location_shadow_len_after_address_max
+ >= bl->address)
+ && (bl->address + bp_location_shadow_len_after_address_max
+ <= memaddr))
bc_l = bc;
else
bc_r = bc;
}
+ /* Due to the binary search above, we need to make sure we pick the
+ first location that's at BC_L's address. E.g., if there are
+ multiple locations at the same address, BC_L may end up pointing
+ at a duplicate location, and miss the "master"/"inserted"
+ location. Say, given locations L1, L2 and L3 at addresses A and
+ B:
+
+ L1@A, L2@A, L3@B, ...
+
+ BC_L could end up pointing at location L2, while the "master"
+ location could be L1. Since the `loc->inserted' flag is only set
+ on "master" locations, we'd forget to restore the shadow of L1
+ and L2. */
+ while (bc_l > 0
+ && bp_location[bc_l]->address == bp_location[bc_l - 1]->address)
+ bc_l--;
+
/* Now do full processing of the found relevant range of elements. */
for (bc = bc_l; bc < bp_location_count; bc++)
{
- struct bp_location *b = bp_location[bc];
+ struct bp_location *bl = bp_location[bc];
CORE_ADDR bp_addr = 0;
int bp_size = 0;
int bptoffset = 0;
- /* bp_location array has B->OWNER always non-NULL. */
- if (b->owner->type == bp_none)
+ /* bp_location array has BL->OWNER always non-NULL. */
+ if (bl->owner->type == bp_none)
warning (_("reading through apparently deleted breakpoint #%d?"),
- b->owner->number);
+ bl->owner->number);
- /* Performance optimization: any futher element can no longer affect BUF
+ /* Performance optimization: any further element can no longer affect BUF
content. */
- if (b->address >= bp_location_placed_address_before_address_max
- && memaddr + len <= b->address
- - bp_location_placed_address_before_address_max)
+ if (bl->address >= bp_location_placed_address_before_address_max
+ && memaddr + len <= (bl->address
+ - bp_location_placed_address_before_address_max))
break;
- if (!bp_location_has_shadow (b))
+ if (!bp_location_has_shadow (bl))
continue;
- if (!breakpoint_address_match (b->target_info.placed_address_space, 0,
+ if (!breakpoint_address_match (bl->target_info.placed_address_space, 0,
current_program_space->aspace, 0))
continue;
/* Addresses and length of the part of the breakpoint that
we need to copy. */
- bp_addr = b->target_info.placed_address;
- bp_size = b->target_info.shadow_len;
+ bp_addr = bl->target_info.placed_address;
+ bp_size = bl->target_info.shadow_len;
if (bp_addr + bp_size <= memaddr)
/* The breakpoint is entirely before the chunk of memory we
if (bp_addr >= memaddr + len)
/* The breakpoint is entirely after the chunk of memory we are
- reading. */
+ reading. */
continue;
/* Offset within shadow_contents. */
}
memcpy (buf + bp_addr - memaddr,
- b->target_info.shadow_contents + bptoffset, bp_size);
+ bl->target_info.shadow_contents + bptoffset, bp_size);
}
}
\f
-/* A wrapper function for inserting catchpoints. */
-static void
-insert_catchpoint (struct ui_out *uo, void *args)
-{
- struct breakpoint *b = (struct breakpoint *) args;
-
- gdb_assert (b->type == bp_catchpoint);
- gdb_assert (b->ops != NULL && b->ops->insert != NULL);
-
- b->ops->insert (b);
-}
-
/* Return true if BPT is of any hardware watchpoint kind. */
static int
/* Return true if BPT is of any watchpoint kind, hardware or
software. */
-static int
+int
is_watchpoint (const struct breakpoint *bpt)
{
return (is_hardware_watchpoint (bpt)
|| bpt->type == bp_watchpoint);
}
-/* Assuming that B is a watchpoint: returns true if the current thread
- and its running state are safe to evaluate or update watchpoint B.
- Watchpoints on local expressions need to be evaluated in the
- context of the thread that was current when the watchpoint was
- created, and, that thread needs to be stopped to be able to select
- the correct frame context. Watchpoints on global expressions can
- be evaluated on any thread, and in any state. It is presently left
- to the target allowing memory accesses when threads are
- running. */
+/* Returns true if the current thread and its running state are safe
+ to evaluate or update watchpoint B. Watchpoints on local
+ expressions need to be evaluated in the context of the thread that
+ was current when the watchpoint was created, and, that thread needs
+ to be stopped to be able to select the correct frame context.
+ Watchpoints on global expressions can be evaluated on any thread,
+ and in any state. It is presently left to the target allowing
+ memory accesses when threads are running. */
static int
-watchpoint_in_thread_scope (struct breakpoint *b)
+watchpoint_in_thread_scope (struct watchpoint *b)
{
return (ptid_equal (b->watchpoint_thread, null_ptid)
|| (ptid_equal (inferior_ptid, b->watchpoint_thread)
&& !is_executing (inferior_ptid)));
}
+/* Set watchpoint B to disp_del_at_next_stop, even including its possible
+ associated bp_watchpoint_scope breakpoint. */
+
+static void
+watchpoint_del_at_next_stop (struct watchpoint *w)
+{
+ struct breakpoint *b = &w->base;
+
+ if (b->related_breakpoint != b)
+ {
+ gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope);
+ gdb_assert (b->related_breakpoint->related_breakpoint == b);
+ b->related_breakpoint->disposition = disp_del_at_next_stop;
+ b->related_breakpoint->related_breakpoint = b->related_breakpoint;
+ b->related_breakpoint = b;
+ }
+ b->disposition = disp_del_at_next_stop;
+}
+
/* Assuming that B is a watchpoint:
- Reparse watchpoint expression, if REPARSE is non-zero
- Evaluate expression and store the result in B->val
in b->loc->cond.
- Update the list of values that must be watched in B->loc.
- If the watchpoint disposition is disp_del_at_next_stop, then do nothing.
- If this is local watchpoint that is out of scope, delete it.
-
- Even with `set breakpoint always-inserted on' the watchpoints are removed
- + inserted on each stop here. Normal breakpoints must never be removed
- because they might be missed by a running thread when debugging in non-stop
- mode. On the other hand, hardware watchpoints (is_hardware_watchpoint;
- processed here) are specific to each LWP since they are stored in each LWP's
- hardware debug registers. Therefore, such LWP must be stopped first in
- order to be able to modify its hardware watchpoints.
-
- Hardware watchpoints must be reset exactly once after being presented to the
- user. It cannot be done sooner, because it would reset the data used to
- present the watchpoint hit to the user. And it must not be done later
- because it could display the same single watchpoint hit during multiple GDB
- stops. Note that the latter is relevant only to the hardware watchpoint
- types bp_read_watchpoint and bp_access_watchpoint. False hit by
- bp_hardware_watchpoint is not user-visible - its hit is suppressed if the
- memory content has not changed.
-
- The following constraints influence the location where we can reset hardware
- watchpoints:
-
- * target_stopped_by_watchpoint and target_stopped_data_address are called
- several times when GDB stops.
-
- [linux]
- * Multiple hardware watchpoints can be hit at the same time, causing GDB to
- stop. GDB only presents one hardware watchpoint hit at a time as the
- reason for stopping, and all the other hits are presented later, one after
- the other, each time the user requests the execution to be resumed.
- Execution is not resumed for the threads still having pending hit event
- stored in LWP_INFO->STATUS. While the watchpoint is already removed from
- the inferior on the first stop the thread hit event is kept being reported
- from its cached value by linux_nat_stopped_data_address until the real
- thread resume happens after the watchpoint gets presented and thus its
- LWP_INFO->STATUS gets reset.
-
- Therefore the hardware watchpoint hit can get safely reset on the watchpoint
- removal from inferior. */
-
-static void
-update_watchpoint (struct breakpoint *b, int reparse)
+ If the watchpoint disposition is disp_del_at_next_stop, then do
+ nothing. If this is local watchpoint that is out of scope, delete
+ it.
+
+ Even with `set breakpoint always-inserted on' the watchpoints are
+ removed + inserted on each stop here. Normal breakpoints must
+ never be removed because they might be missed by a running thread
+ when debugging in non-stop mode. On the other hand, hardware
+ watchpoints (is_hardware_watchpoint; processed here) are specific
+ to each LWP since they are stored in each LWP's hardware debug
+ registers. Therefore, such LWP must be stopped first in order to
+ be able to modify its hardware watchpoints.
+
+ Hardware watchpoints must be reset exactly once after being
+ presented to the user. It cannot be done sooner, because it would
+ reset the data used to present the watchpoint hit to the user. And
+ it must not be done later because it could display the same single
+ watchpoint hit during multiple GDB stops. Note that the latter is
+ relevant only to the hardware watchpoint types bp_read_watchpoint
+ and bp_access_watchpoint. False hit by bp_hardware_watchpoint is
+ not user-visible - its hit is suppressed if the memory content has
+ not changed.
+
+ The following constraints influence the location where we can reset
+ hardware watchpoints:
+
+ * target_stopped_by_watchpoint and target_stopped_data_address are
+ called several times when GDB stops.
+
+ [linux]
+ * Multiple hardware watchpoints can be hit at the same time,
+ causing GDB to stop. GDB only presents one hardware watchpoint
+ hit at a time as the reason for stopping, and all the other hits
+ are presented later, one after the other, each time the user
+ requests the execution to be resumed. Execution is not resumed
+ for the threads still having pending hit event stored in
+ LWP_INFO->STATUS. While the watchpoint is already removed from
+ the inferior on the first stop the thread hit event is kept being
+ reported from its cached value by linux_nat_stopped_data_address
+ until the real thread resume happens after the watchpoint gets
+ presented and thus its LWP_INFO->STATUS gets reset.
+
+ Therefore the hardware watchpoint hit can get safely reset on the
+ watchpoint removal from inferior. */
+
+static void
+update_watchpoint (struct watchpoint *b, int reparse)
{
int within_current_scope;
struct frame_id saved_frame_id;
if (!watchpoint_in_thread_scope (b))
return;
- /* We don't free locations. They are stored in bp_location array and
- update_global_locations will eventually delete them and remove
- breakpoints if needed. */
- b->loc = NULL;
-
- if (b->disposition == disp_del_at_next_stop)
+ if (b->base.disposition == disp_del_at_next_stop)
return;
frame_saved = 0;
within_current_scope = 1;
else
{
- struct frame_info *fi;
+ struct frame_info *fi = get_current_frame ();
+ struct gdbarch *frame_arch = get_frame_arch (fi);
+ CORE_ADDR frame_pc = get_frame_pc (fi);
+
+ /* If we're in a function epilogue, unwinding may not work
+ properly, so do not attempt to recreate locations at this
+ point. See similar comments in watchpoint_check. */
+ if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc))
+ return;
/* Save the current frame's ID so we can restore it after
evaluating the watchpoint expression on its own frame. */
select_frame (fi);
}
+ /* We don't free locations. They are stored in the bp_location array
+ and update_global_location_list will eventually delete them and
+ remove breakpoints if needed. */
+ b->base.loc = NULL;
+
if (within_current_scope && reparse)
{
char *s;
/* Note that unlike with breakpoints, the watchpoint's condition
expression is stored in the breakpoint object, not in the
locations (re)created below. */
- if (b->cond_string != NULL)
+ if (b->base.cond_string != NULL)
{
if (b->cond_exp != NULL)
{
b->cond_exp = NULL;
}
- s = b->cond_string;
+ s = b->base.cond_string;
b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0);
}
}
/* Avoid setting b->val if it's already set. The meaning of
b->val is 'the last value' user saw, and we should update
it only if we reported that last value to user. As it
- happens, the code that reports it updates b->val directly. */
- if (!b->val_valid)
+ happens, the code that reports it updates b->val directly.
+ We don't keep track of the memory value for masked
+ watchpoints. */
+ if (!b->val_valid && !is_masked_watchpoint (&b->base))
{
b->val = v;
b->val_valid = 1;
}
- /* Change the type of breakpoint between hardware assisted or an
- ordinary watchpoint depending on the hardware support and free
- hardware slots. REPARSE is set when the inferior is started. */
- if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint)
- && reparse)
- {
- int i, mem_cnt, other_type_used;
-
- /* We need to determine how many resources are already used
- for all other hardware watchpoints to see if we still have
- enough resources to also fit this watchpoint in as well.
- To avoid the hw_watchpoint_used_count call below from counting
- this watchpoint, make sure that it is marked as a software
- watchpoint. */
- b->type = bp_watchpoint;
- i = hw_watchpoint_used_count (bp_hardware_watchpoint,
- &other_type_used);
- mem_cnt = can_use_hardware_watchpoint (val_chain);
-
- if (!mem_cnt)
- b->type = bp_watchpoint;
- else
- {
- int target_resources_ok = target_can_use_hardware_watchpoint
- (bp_hardware_watchpoint, i + mem_cnt, other_type_used);
- if (target_resources_ok <= 0)
- b->type = bp_watchpoint;
- else
- b->type = bp_hardware_watchpoint;
- }
- }
-
frame_pspace = get_frame_program_space (get_selected_frame (NULL));
/* Look at each value on the value chain. */
- for (v = val_chain; v; v = next)
+ for (v = val_chain; v; v = value_next (v))
{
/* If it's a memory location, and GDB actually needed
its contents to evaluate the expression, then we
addr = value_address (v);
len = TYPE_LENGTH (value_type (v));
type = hw_write;
- if (b->type == bp_read_watchpoint)
+ if (b->base.type == bp_read_watchpoint)
type = hw_read;
- else if (b->type == bp_access_watchpoint)
+ else if (b->base.type == bp_access_watchpoint)
type = hw_access;
-
- loc = allocate_bp_location (b);
- for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next))
+
+ loc = allocate_bp_location (&b->base);
+ for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next))
;
*tmp = loc;
loc->gdbarch = get_type_arch (value_type (v));
loc->watchpoint_type = type;
}
}
+ }
+
+ /* Change the type of breakpoint between hardware assisted or
+ an ordinary watchpoint depending on the hardware support
+ and free hardware slots. REPARSE is set when the inferior
+ is started. */
+ if (reparse)
+ {
+ int reg_cnt;
+ enum bp_loc_type loc_type;
+ struct bp_location *bl;
+
+ reg_cnt = can_use_hardware_watchpoint (val_chain);
+
+ if (reg_cnt)
+ {
+ int i, target_resources_ok, other_type_used;
+ enum bptype type;
+
+ /* Use an exact watchpoint when there's only one memory region to be
+ watched, and only one debug register is needed to watch it. */
+ b->exact = target_exact_watchpoints && reg_cnt == 1;
+
+ /* We need to determine how many resources are already
+ used for all other hardware watchpoints plus this one
+ to see if we still have enough resources to also fit
+ this watchpoint in as well. */
+
+ /* If this is a software watchpoint, we try to turn it
+ to a hardware one -- count resources as if B was of
+ hardware watchpoint type. */
+ type = b->base.type;
+ if (type == bp_watchpoint)
+ type = bp_hardware_watchpoint;
+
+ /* This watchpoint may or may not have been placed on
+ the list yet at this point (it won't be in the list
+ if we're trying to create it for the first time,
+ through watch_command), so always account for it
+ manually. */
+
+ /* Count resources used by all watchpoints except B. */
+ i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used);
+
+ /* Add in the resources needed for B. */
+ i += hw_watchpoint_use_count (&b->base);
+
+ target_resources_ok
+ = target_can_use_hardware_watchpoint (type, i, other_type_used);
+ if (target_resources_ok <= 0)
+ {
+ int sw_mode = b->base.ops->works_in_software_mode (&b->base);
+
+ if (target_resources_ok == 0 && !sw_mode)
+ error (_("Target does not support this type of "
+ "hardware watchpoint."));
+ else if (target_resources_ok < 0 && !sw_mode)
+ error (_("There are not enough available hardware "
+ "resources for this watchpoint."));
+
+ /* Downgrade to software watchpoint. */
+ b->base.type = bp_watchpoint;
+ }
+ else
+ {
+ /* If this was a software watchpoint, we've just
+ found we have enough resources to turn it to a
+ hardware watchpoint. Otherwise, this is a
+ nop. */
+ b->base.type = type;
+ }
+ }
+ else if (!b->base.ops->works_in_software_mode (&b->base))
+ error (_("Expression cannot be implemented with "
+ "read/access watchpoint."));
+ else
+ b->base.type = bp_watchpoint;
+
+ loc_type = (b->base.type == bp_watchpoint? bp_loc_other
+ : bp_loc_hardware_watchpoint);
+ for (bl = b->base.loc; bl; bl = bl->next)
+ bl->loc_type = loc_type;
+ }
+ for (v = val_chain; v; v = next)
+ {
next = value_next (v);
if (v != b->val)
value_free (v);
above left it without any location set up. But,
bpstat_stop_status requires a location to be able to report
stops, so make sure there's at least a dummy one. */
- if (b->type == bp_watchpoint && b->loc == NULL)
+ if (b->base.type == bp_watchpoint && b->base.loc == NULL)
{
- b->loc = allocate_bp_location (b);
- b->loc->pspace = frame_pspace;
- b->loc->address = -1;
- b->loc->length = -1;
- b->loc->watchpoint_type = -1;
+ struct breakpoint *base = &b->base;
+ base->loc = allocate_bp_location (base);
+ base->loc->pspace = frame_pspace;
+ base->loc->address = -1;
+ base->loc->length = -1;
+ base->loc->watchpoint_type = -1;
}
}
else if (!within_current_scope)
printf_filtered (_("\
Watchpoint %d deleted because the program has left the block\n\
in which its expression is valid.\n"),
- b->number);
- if (b->related_breakpoint)
- {
- b->related_breakpoint->disposition = disp_del_at_next_stop;
- b->related_breakpoint->related_breakpoint = NULL;
- b->related_breakpoint= NULL;
- }
- b->disposition = disp_del_at_next_stop;
+ b->base.number);
+ watchpoint_del_at_next_stop (b);
}
/* Restore the selected frame. */
/* Returns 1 iff breakpoint location should be
inserted in the inferior. */
static int
-should_be_inserted (struct bp_location *bpt)
+should_be_inserted (struct bp_location *bl)
{
- if (bpt->owner == NULL || !breakpoint_enabled (bpt->owner))
+ if (bl->owner == NULL || !breakpoint_enabled (bl->owner))
return 0;
- if (bpt->owner->disposition == disp_del_at_next_stop)
+ if (bl->owner->disposition == disp_del_at_next_stop)
return 0;
- if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate)
+ if (!bl->enabled || bl->shlib_disabled || bl->duplicate)
return 0;
/* This is set for example, when we're attached to the parent of a
memory region, do not insert breakpoints in the parent, otherwise
the child could still trip on the parent's breakpoints. Since
the parent is blocked anyway, it won't miss any breakpoint. */
- if (bpt->pspace->breakpoints_not_allowed)
+ if (bl->pspace->breakpoints_not_allowed)
return 0;
/* Tracepoints are inserted by the target at a time of its choosing,
not by us. */
- if (is_tracepoint (bpt->owner))
+ if (is_tracepoint (bl->owner))
return 0;
return 1;
}
-/* Insert a low-level "breakpoint" of some type. BPT is the breakpoint.
- Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS,
- and HW_BREAKPOINT_ERROR are used to report problems.
+/* Same as should_be_inserted but does the check assuming
+ that the location is not duplicated. */
+
+static int
+unduplicated_should_be_inserted (struct bp_location *bl)
+{
+ int result;
+ const int save_duplicate = bl->duplicate;
+
+ bl->duplicate = 0;
+ result = should_be_inserted (bl);
+ bl->duplicate = save_duplicate;
+ return result;
+}
+
+/* Insert a low-level "breakpoint" of some type. BL is the breakpoint
+ location. Any error messages are printed to TMP_ERROR_STREAM; and
+ DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems.
+ Returns 0 for success, 1 if the bp_location type is not supported or
+ -1 for failure.
- NOTE drow/2003-09-09: This routine could be broken down to an object-style
- method for each breakpoint or catchpoint type. */
+ NOTE drow/2003-09-09: This routine could be broken down to an
+ object-style method for each breakpoint or catchpoint type. */
static int
-insert_bp_location (struct bp_location *bpt,
+insert_bp_location (struct bp_location *bl,
struct ui_file *tmp_error_stream,
int *disabled_breaks,
int *hw_breakpoint_error)
{
int val = 0;
- if (!should_be_inserted (bpt) || bpt->inserted)
+ if (!should_be_inserted (bl) || bl->inserted)
return 0;
/* Initialize the target-specific information. */
- memset (&bpt->target_info, 0, sizeof (bpt->target_info));
- bpt->target_info.placed_address = bpt->address;
- bpt->target_info.placed_address_space = bpt->pspace->aspace;
+ memset (&bl->target_info, 0, sizeof (bl->target_info));
+ bl->target_info.placed_address = bl->address;
+ bl->target_info.placed_address_space = bl->pspace->aspace;
+ bl->target_info.length = bl->length;
- if (bpt->loc_type == bp_loc_software_breakpoint
- || bpt->loc_type == bp_loc_hardware_breakpoint)
+ if (bl->loc_type == bp_loc_software_breakpoint
+ || bl->loc_type == bp_loc_hardware_breakpoint)
{
- if (bpt->owner->type != bp_hardware_breakpoint)
+ if (bl->owner->type != bp_hardware_breakpoint)
{
/* If the explicitly specified breakpoint type
is not hardware breakpoint, check the memory map to see
if the breakpoint address is in read only memory or not.
+
Two important cases are:
- location type is not hardware breakpoint, memory
is readonly. We change the type of the location to
hardware breakpoint.
- - location type is hardware breakpoint, memory is read-write.
- This means we've previously made the location hardware one, but
- then the memory map changed, so we undo.
+ - location type is hardware breakpoint, memory is
+ read-write. This means we've previously made the
+ location hardware one, but then the memory map changed,
+ so we undo.
- When breakpoints are removed, remove_breakpoints will
- use location types we've just set here, the only possible
- problem is that memory map has changed during running program,
- but it's not going to work anyway with current gdb. */
+ When breakpoints are removed, remove_breakpoints will use
+ location types we've just set here, the only possible
+ problem is that memory map has changed during running
+ program, but it's not going to work anyway with current
+ gdb. */
struct mem_region *mr
- = lookup_mem_region (bpt->target_info.placed_address);
+ = lookup_mem_region (bl->target_info.placed_address);
if (mr)
{
else
new_type = bp_loc_software_breakpoint;
- if (new_type != bpt->loc_type)
+ if (new_type != bl->loc_type)
{
static int said = 0;
- bpt->loc_type = new_type;
+ bl->loc_type = new_type;
if (!said)
{
- fprintf_filtered (gdb_stdout, _("\
-Note: automatically using hardware breakpoints for read-only addresses.\n"));
+ fprintf_filtered (gdb_stdout,
+ _("Note: automatically using "
+ "hardware breakpoints for "
+ "read-only addresses.\n"));
said = 1;
}
}
}
- else if (bpt->loc_type == bp_loc_software_breakpoint
+ else if (bl->loc_type == bp_loc_software_breakpoint
&& mr->attrib.mode != MEM_RW)
- warning (_("cannot set software breakpoint at readonly address %s"),
- paddress (bpt->gdbarch, bpt->address));
+ warning (_("cannot set software breakpoint "
+ "at readonly address %s"),
+ paddress (bl->gdbarch, bl->address));
}
}
/* First check to see if we have to handle an overlay. */
if (overlay_debugging == ovly_off
- || bpt->section == NULL
- || !(section_is_overlay (bpt->section)))
+ || bl->section == NULL
+ || !(section_is_overlay (bl->section)))
{
/* No overlay handling: just set the breakpoint. */
- if (bpt->loc_type == bp_loc_hardware_breakpoint)
- val = target_insert_hw_breakpoint (bpt->gdbarch,
- &bpt->target_info);
- else
- val = target_insert_breakpoint (bpt->gdbarch,
- &bpt->target_info);
+ val = bl->owner->ops->insert_location (bl);
}
else
{
- /* This breakpoint is in an overlay section.
+ /* This breakpoint is in an overlay section.
Shall we set a breakpoint at the LMA? */
if (!overlay_events_enabled)
{
/* Yes -- overlay event support is not active,
so we must try to set a breakpoint at the LMA.
This will not work for a hardware breakpoint. */
- if (bpt->loc_type == bp_loc_hardware_breakpoint)
+ if (bl->loc_type == bp_loc_hardware_breakpoint)
warning (_("hardware breakpoint %d not supported in overlay!"),
- bpt->owner->number);
+ bl->owner->number);
else
{
- CORE_ADDR addr = overlay_unmapped_address (bpt->address,
- bpt->section);
+ CORE_ADDR addr = overlay_unmapped_address (bl->address,
+ bl->section);
/* Set a software (trap) breakpoint at the LMA. */
- bpt->overlay_target_info = bpt->target_info;
- bpt->overlay_target_info.placed_address = addr;
- val = target_insert_breakpoint (bpt->gdbarch,
- &bpt->overlay_target_info);
+ bl->overlay_target_info = bl->target_info;
+ bl->overlay_target_info.placed_address = addr;
+ val = target_insert_breakpoint (bl->gdbarch,
+ &bl->overlay_target_info);
if (val != 0)
fprintf_unfiltered (tmp_error_stream,
- "Overlay breakpoint %d failed: in ROM?\n",
- bpt->owner->number);
+ "Overlay breakpoint %d "
+ "failed: in ROM?\n",
+ bl->owner->number);
}
}
/* Shall we set a breakpoint at the VMA? */
- if (section_is_mapped (bpt->section))
+ if (section_is_mapped (bl->section))
{
/* Yes. This overlay section is mapped into memory. */
- if (bpt->loc_type == bp_loc_hardware_breakpoint)
- val = target_insert_hw_breakpoint (bpt->gdbarch,
- &bpt->target_info);
- else
- val = target_insert_breakpoint (bpt->gdbarch,
- &bpt->target_info);
+ val = bl->owner->ops->insert_location (bl);
}
else
{
if (val)
{
/* Can't set the breakpoint. */
- if (solib_name_from_address (bpt->pspace, bpt->address))
+ if (solib_name_from_address (bl->pspace, bl->address))
{
- /* See also: disable_breakpoints_in_shlibs. */
+ /* See also: disable_breakpoints_in_shlibs. */
val = 0;
- bpt->shlib_disabled = 1;
+ bl->shlib_disabled = 1;
+ observer_notify_breakpoint_modified (bl->owner);
if (!*disabled_breaks)
{
fprintf_unfiltered (tmp_error_stream,
"Cannot insert breakpoint %d.\n",
- bpt->owner->number);
+ bl->owner->number);
fprintf_unfiltered (tmp_error_stream,
- "Temporarily disabling shared library breakpoints:\n");
+ "Temporarily disabling shared "
+ "library breakpoints:\n");
}
*disabled_breaks = 1;
fprintf_unfiltered (tmp_error_stream,
- "breakpoint #%d\n", bpt->owner->number);
+ "breakpoint #%d\n", bl->owner->number);
}
else
{
- if (bpt->loc_type == bp_loc_hardware_breakpoint)
+ if (bl->loc_type == bp_loc_hardware_breakpoint)
{
*hw_breakpoint_error = 1;
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert hardware breakpoint %d.\n",
- bpt->owner->number);
+ fprintf_unfiltered (tmp_error_stream,
+ "Cannot insert hardware "
+ "breakpoint %d.\n",
+ bl->owner->number);
}
else
{
fprintf_unfiltered (tmp_error_stream,
"Cannot insert breakpoint %d.\n",
- bpt->owner->number);
+ bl->owner->number);
fprintf_filtered (tmp_error_stream,
"Error accessing memory address ");
- fputs_filtered (paddress (bpt->gdbarch, bpt->address),
+ fputs_filtered (paddress (bl->gdbarch, bl->address),
tmp_error_stream);
fprintf_filtered (tmp_error_stream, ": %s.\n",
safe_strerror (val));
}
}
else
- bpt->inserted = 1;
+ bl->inserted = 1;
return val;
}
- else if (bpt->loc_type == bp_loc_hardware_watchpoint
+ else if (bl->loc_type == bp_loc_hardware_watchpoint
/* NOTE drow/2003-09-08: This state only exists for removing
- watchpoints. It's not clear that it's necessary... */
- && bpt->owner->disposition != disp_del_at_next_stop)
+ watchpoints. It's not clear that it's necessary... */
+ && bl->owner->disposition != disp_del_at_next_stop)
{
- val = target_insert_watchpoint (bpt->address,
- bpt->length,
- bpt->watchpoint_type,
- bpt->owner->cond_exp);
+ gdb_assert (bl->owner->ops != NULL
+ && bl->owner->ops->insert_location != NULL);
+
+ val = bl->owner->ops->insert_location (bl);
/* If trying to set a read-watchpoint, and it turns out it's not
supported, try emulating one with an access watchpoint. */
- if (val == 1 && bpt->watchpoint_type == hw_read)
+ if (val == 1 && bl->watchpoint_type == hw_read)
{
struct bp_location *loc, **loc_temp;
hw_access location that would be considered a duplicate
of this one. */
ALL_BP_LOCATIONS (loc, loc_temp)
- if (loc != bpt
+ if (loc != bl
&& loc->watchpoint_type == hw_access
- && watchpoint_locations_match (bpt, loc))
+ && watchpoint_locations_match (bl, loc))
{
- bpt->duplicate = 1;
- bpt->inserted = 1;
- bpt->target_info = loc->target_info;
- bpt->watchpoint_type = hw_access;
+ bl->duplicate = 1;
+ bl->inserted = 1;
+ bl->target_info = loc->target_info;
+ bl->watchpoint_type = hw_access;
val = 0;
break;
}
if (val == 1)
{
- val = target_insert_watchpoint (bpt->address,
- bpt->length,
- hw_access,
- bpt->owner->cond_exp);
- if (val == 0)
- bpt->watchpoint_type = hw_access;
+ bl->watchpoint_type = hw_access;
+ val = bl->owner->ops->insert_location (bl);
+
+ if (val)
+ /* Back to the original value. */
+ bl->watchpoint_type = hw_read;
}
}
- bpt->inserted = (val == 0);
+ bl->inserted = (val == 0);
}
- else if (bpt->owner->type == bp_catchpoint)
+ else if (bl->owner->type == bp_catchpoint)
{
- struct gdb_exception e = catch_exception (uiout, insert_catchpoint,
- bpt->owner, RETURN_MASK_ERROR);
- exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ",
- bpt->owner->number);
- if (e.reason < 0)
- bpt->owner->enable_state = bp_disabled;
- else
- bpt->inserted = 1;
+ gdb_assert (bl->owner->ops != NULL
+ && bl->owner->ops->insert_location != NULL);
+
+ val = bl->owner->ops->insert_location (bl);
+ if (val)
+ {
+ bl->owner->enable_state = bp_disabled;
+
+ if (val == 1)
+ warning (_("\
+Error inserting catchpoint %d: Your system does not support this type\n\
+of catchpoint."), bl->owner->number);
+ else
+ warning (_("Error inserting catchpoint %d."), bl->owner->number);
+ }
+
+ bl->inserted = (val == 0);
/* We've already printed an error message if there was a problem
inserting this catchpoint, and we've disabled the catchpoint,
ALL_BREAKPOINTS (bpt)
if (is_hardware_watchpoint (bpt))
- update_watchpoint (bpt, 0 /* don't reparse. */);
+ {
+ struct watchpoint *w = (struct watchpoint *) bpt;
+
+ update_watchpoint (w, 0 /* don't reparse. */);
+ }
update_global_location_list (1);
insert_breakpoint_locations ();
}
-/* insert_breakpoints is used when starting or continuing the program.
- remove_breakpoints is used when the program stops.
- Both return zero if successful,
- or an `errno' value if could not write the inferior. */
+/* Used when starting or continuing the program. */
static void
insert_breakpoint_locations (void)
{
struct breakpoint *bpt;
- struct bp_location *b, **bp_tmp;
+ struct bp_location *bl, **blp_tmp;
int error = 0;
int val = 0;
int disabled_breaks = 0;
save_current_space_and_thread ();
- ALL_BP_LOCATIONS (b, bp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (!should_be_inserted (b) || b->inserted)
+ if (!should_be_inserted (bl) || bl->inserted)
continue;
- /* There is no point inserting thread-specific breakpoints if the
- thread no longer exists. ALL_BP_LOCATIONS bp_location has B->OWNER
- always non-NULL. */
- if (b->owner->thread != -1
- && !valid_thread_id (b->owner->thread))
+ /* There is no point inserting thread-specific breakpoints if
+ the thread no longer exists. ALL_BP_LOCATIONS bp_location
+ has BL->OWNER always non-NULL. */
+ if (bl->owner->thread != -1
+ && !valid_thread_id (bl->owner->thread))
continue;
- switch_to_program_space_and_thread (b->pspace);
+ switch_to_program_space_and_thread (bl->pspace);
/* For targets that support global breakpoints, there's no need
to select an inferior to insert breakpoint to. In fact, even
&& ptid_equal (inferior_ptid, null_ptid))
continue;
- val = insert_bp_location (b, tmp_error_stream,
- &disabled_breaks,
+ val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks,
&hw_breakpoint_error);
if (val)
error = val;
}
- /* If we failed to insert all locations of a watchpoint,
- remove them, as half-inserted watchpoint is of limited use. */
+ /* If we failed to insert all locations of a watchpoint, remove
+ them, as half-inserted watchpoint is of limited use. */
ALL_BREAKPOINTS (bpt)
{
int some_failed = 0;
do_cleanups (cleanups);
}
+/* Used when the program stops.
+ Returns zero if successful, or non-zero if there was a problem
+ removing a breakpoint location. */
+
int
remove_breakpoints (void)
{
- struct bp_location *b, **bp_tmp;
+ struct bp_location *bl, **blp_tmp;
int val = 0;
- ALL_BP_LOCATIONS (b, bp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (b->inserted)
- val |= remove_breakpoint (b, mark_uninserted);
+ if (bl->inserted)
+ val |= remove_breakpoint (bl, mark_uninserted);
}
return val;
}
int
remove_breakpoints_pid (int pid)
{
- struct bp_location *b, **b_tmp;
+ struct bp_location *bl, **blp_tmp;
int val;
struct inferior *inf = find_inferior_pid (pid);
- ALL_BP_LOCATIONS (b, b_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (b->pspace != inf->pspace)
+ if (bl->pspace != inf->pspace)
continue;
- if (b->inserted)
+ if (bl->inserted)
{
- val = remove_breakpoint (b, mark_uninserted);
+ val = remove_breakpoint (bl, mark_uninserted);
if (val != 0)
return val;
}
return 0;
}
-int
-remove_hw_watchpoints (void)
-{
- struct bp_location *b, **bp_tmp;
- int val = 0;
-
- ALL_BP_LOCATIONS (b, bp_tmp)
- {
- if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint)
- val |= remove_breakpoint (b, mark_uninserted);
- }
- return val;
-}
-
int
reattach_breakpoints (int pid)
{
struct cleanup *old_chain;
- struct bp_location *b, **bp_tmp;
+ struct bp_location *bl, **blp_tmp;
int val;
- struct ui_file *tmp_error_stream = mem_fileopen ();
+ struct ui_file *tmp_error_stream;
int dummy1 = 0, dummy2 = 0;
struct inferior *inf;
struct thread_info *tp;
inferior_ptid = tp->ptid;
+ tmp_error_stream = mem_fileopen ();
make_cleanup_ui_file_delete (tmp_error_stream);
- ALL_BP_LOCATIONS (b, bp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (b->pspace != inf->pspace)
+ if (bl->pspace != inf->pspace)
continue;
- if (b->inserted)
+ if (bl->inserted)
{
- b->inserted = 0;
- val = insert_bp_location (b, tmp_error_stream,
- &dummy1, &dummy2);
+ bl->inserted = 0;
+ val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2);
if (val != 0)
{
do_cleanups (old_chain);
/* Set the breakpoint number of B, depending on the value of INTERNAL.
If INTERNAL is non-zero, the breakpoint number will be populated
from internal_breakpoint_number and that variable decremented.
- Otherwis the breakpoint number will be populated from
+ Otherwise the breakpoint number will be populated from
breakpoint_count and that value incremented. Internal breakpoints
do not set the internal var bpnum. */
static void
static struct breakpoint *
create_internal_breakpoint (struct gdbarch *gdbarch,
- CORE_ADDR address, enum bptype type)
+ CORE_ADDR address, enum bptype type,
+ const struct breakpoint_ops *ops)
{
struct symtab_and_line sal;
struct breakpoint *b;
- init_sal (&sal); /* initialize to zeroes */
+ init_sal (&sal); /* Initialize to zeroes. */
sal.pc = address;
sal.section = find_pc_overlay (sal.pc);
sal.pspace = current_program_space;
- b = set_raw_breakpoint (gdbarch, sal, type);
+ b = set_raw_breakpoint (gdbarch, sal, type, ops);
b->number = internal_breakpoint_number--;
b->disposition = disp_donttouch;
return b;
}
+static const char *const longjmp_names[] =
+ {
+ "longjmp", "_longjmp", "siglongjmp", "_siglongjmp"
+ };
+#define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names)
+
+/* Per-objfile data private to breakpoint.c. */
+struct breakpoint_objfile_data
+{
+ /* Minimal symbol for "_ovly_debug_event" (if any). */
+ struct minimal_symbol *overlay_msym;
+
+ /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */
+ struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES];
+
+ /* Minimal symbol for "std::terminate()" (if any). */
+ struct minimal_symbol *terminate_msym;
+
+ /* Minimal symbol for "_Unwind_DebugHook" (if any). */
+ struct minimal_symbol *exception_msym;
+};
+
+static const struct objfile_data *breakpoint_objfile_key;
+
+/* Minimal symbol not found sentinel. */
+static struct minimal_symbol msym_not_found;
+
+/* Returns TRUE if MSYM point to the "not found" sentinel. */
+
+static int
+msym_not_found_p (const struct minimal_symbol *msym)
+{
+ return msym == &msym_not_found;
+}
+
+/* Return per-objfile data needed by breakpoint.c.
+ Allocate the data if necessary. */
+
+static struct breakpoint_objfile_data *
+get_breakpoint_objfile_data (struct objfile *objfile)
+{
+ struct breakpoint_objfile_data *bp_objfile_data;
+
+ bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key);
+ if (bp_objfile_data == NULL)
+ {
+ bp_objfile_data = obstack_alloc (&objfile->objfile_obstack,
+ sizeof (*bp_objfile_data));
+
+ memset (bp_objfile_data, 0, sizeof (*bp_objfile_data));
+ set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data);
+ }
+ return bp_objfile_data;
+}
+
static void
-create_overlay_event_breakpoint (char *func_name)
+create_overlay_event_breakpoint (void)
{
struct objfile *objfile;
+ const char *const func_name = "_ovly_debug_event";
ALL_OBJFILES (objfile)
{
struct breakpoint *b;
- struct minimal_symbol *m;
+ struct breakpoint_objfile_data *bp_objfile_data;
+ CORE_ADDR addr;
- m = lookup_minimal_symbol_text (func_name, objfile);
- if (m == NULL)
- continue;
+ bp_objfile_data = get_breakpoint_objfile_data (objfile);
+
+ if (msym_not_found_p (bp_objfile_data->overlay_msym))
+ continue;
+
+ if (bp_objfile_data->overlay_msym == NULL)
+ {
+ struct minimal_symbol *m;
+
+ m = lookup_minimal_symbol_text (func_name, objfile);
+ if (m == NULL)
+ {
+ /* Avoid future lookups in this objfile. */
+ bp_objfile_data->overlay_msym = &msym_not_found;
+ continue;
+ }
+ bp_objfile_data->overlay_msym = m;
+ }
- b = create_internal_breakpoint (get_objfile_arch (objfile),
- SYMBOL_VALUE_ADDRESS (m),
- bp_overlay_event);
+ addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym);
+ b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
+ bp_overlay_event,
+ &internal_breakpoint_ops);
b->addr_string = xstrdup (func_name);
if (overlay_debugging == ovly_auto)
}
static void
-create_longjmp_master_breakpoint (char *func_name)
+create_longjmp_master_breakpoint (void)
{
struct program_space *pspace;
- struct objfile *objfile;
struct cleanup *old_chain;
old_chain = save_current_program_space ();
ALL_PSPACES (pspace)
- ALL_OBJFILES (objfile)
+ {
+ struct objfile *objfile;
+
+ set_current_program_space (pspace);
+
+ ALL_OBJFILES (objfile)
{
- struct breakpoint *b;
- struct minimal_symbol *m;
+ int i;
+ struct gdbarch *gdbarch;
+ struct breakpoint_objfile_data *bp_objfile_data;
- if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile)))
+ gdbarch = get_objfile_arch (objfile);
+ if (!gdbarch_get_longjmp_target_p (gdbarch))
continue;
- set_current_program_space (pspace);
+ bp_objfile_data = get_breakpoint_objfile_data (objfile);
- m = lookup_minimal_symbol_text (func_name, objfile);
- if (m == NULL)
- continue;
+ for (i = 0; i < NUM_LONGJMP_NAMES; i++)
+ {
+ struct breakpoint *b;
+ const char *func_name;
+ CORE_ADDR addr;
- b = create_internal_breakpoint (get_objfile_arch (objfile),
- SYMBOL_VALUE_ADDRESS (m),
- bp_longjmp_master);
- b->addr_string = xstrdup (func_name);
- b->enable_state = bp_disabled;
- }
- update_global_location_list (1);
+ if (msym_not_found_p (bp_objfile_data->longjmp_msym[i]))
+ continue;
- do_cleanups (old_chain);
-}
+ func_name = longjmp_names[i];
+ if (bp_objfile_data->longjmp_msym[i] == NULL)
+ {
+ struct minimal_symbol *m;
-/* Create a master std::terminate breakpoint. The actual function
- looked for is named FUNC_NAME. */
-static void
-create_std_terminate_master_breakpoint (const char *func_name)
-{
+ m = lookup_minimal_symbol_text (func_name, objfile);
+ if (m == NULL)
+ {
+ /* Prevent future lookups in this objfile. */
+ bp_objfile_data->longjmp_msym[i] = &msym_not_found;
+ continue;
+ }
+ bp_objfile_data->longjmp_msym[i] = m;
+ }
+
+ addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]);
+ b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master,
+ &internal_breakpoint_ops);
+ b->addr_string = xstrdup (func_name);
+ b->enable_state = bp_disabled;
+ }
+ }
+ }
+ update_global_location_list (1);
+
+ do_cleanups (old_chain);
+}
+
+/* Create a master std::terminate breakpoint. */
+static void
+create_std_terminate_master_breakpoint (void)
+{
struct program_space *pspace;
- struct objfile *objfile;
struct cleanup *old_chain;
+ const char *const func_name = "std::terminate()";
old_chain = save_current_program_space ();
ALL_PSPACES (pspace)
+ {
+ struct objfile *objfile;
+ CORE_ADDR addr;
+
+ set_current_program_space (pspace);
+
ALL_OBJFILES (objfile)
{
struct breakpoint *b;
- struct minimal_symbol *m;
+ struct breakpoint_objfile_data *bp_objfile_data;
- set_current_program_space (pspace);
+ bp_objfile_data = get_breakpoint_objfile_data (objfile);
- m = lookup_minimal_symbol (func_name, NULL, objfile);
- if (m == NULL || (MSYMBOL_TYPE (m) != mst_text
- && MSYMBOL_TYPE (m) != mst_file_text))
- continue;
+ if (msym_not_found_p (bp_objfile_data->terminate_msym))
+ continue;
+
+ if (bp_objfile_data->terminate_msym == NULL)
+ {
+ struct minimal_symbol *m;
+
+ m = lookup_minimal_symbol (func_name, NULL, objfile);
+ if (m == NULL || (MSYMBOL_TYPE (m) != mst_text
+ && MSYMBOL_TYPE (m) != mst_file_text))
+ {
+ /* Prevent future lookups in this objfile. */
+ bp_objfile_data->terminate_msym = &msym_not_found;
+ continue;
+ }
+ bp_objfile_data->terminate_msym = m;
+ }
- b = create_internal_breakpoint (get_objfile_arch (objfile),
- SYMBOL_VALUE_ADDRESS (m),
- bp_std_terminate_master);
+ addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym);
+ b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
+ bp_std_terminate_master,
+ &internal_breakpoint_ops);
b->addr_string = xstrdup (func_name);
b->enable_state = bp_disabled;
}
+ }
+
update_global_location_list (1);
do_cleanups (old_chain);
create_exception_master_breakpoint (void)
{
struct objfile *objfile;
+ const char *const func_name = "_Unwind_DebugHook";
ALL_OBJFILES (objfile)
{
- struct minimal_symbol *debug_hook;
+ struct breakpoint *b;
+ struct gdbarch *gdbarch;
+ struct breakpoint_objfile_data *bp_objfile_data;
+ CORE_ADDR addr;
+
+ bp_objfile_data = get_breakpoint_objfile_data (objfile);
+
+ if (msym_not_found_p (bp_objfile_data->exception_msym))
+ continue;
+
+ gdbarch = get_objfile_arch (objfile);
- debug_hook = lookup_minimal_symbol ("_Unwind_DebugHook", NULL, objfile);
- if (debug_hook != NULL)
+ if (bp_objfile_data->exception_msym == NULL)
{
- struct breakpoint *b;
- CORE_ADDR addr = SYMBOL_VALUE_ADDRESS (debug_hook);
- struct gdbarch *gdbarch = get_objfile_arch (objfile);
+ struct minimal_symbol *debug_hook;
- addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
- ¤t_target);
- b = create_internal_breakpoint (gdbarch, addr, bp_exception_master);
- b->addr_string = xstrdup ("_Unwind_DebugHook");
- b->enable_state = bp_disabled;
+ debug_hook = lookup_minimal_symbol (func_name, NULL, objfile);
+ if (debug_hook == NULL)
+ {
+ bp_objfile_data->exception_msym = &msym_not_found;
+ continue;
+ }
+
+ bp_objfile_data->exception_msym = debug_hook;
}
+
+ addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym);
+ addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
+ ¤t_target);
+ b = create_internal_breakpoint (gdbarch, addr, bp_exception_master,
+ &internal_breakpoint_ops);
+ b->addr_string = xstrdup (func_name);
+ b->enable_state = bp_disabled;
}
update_global_location_list (1);
void
update_breakpoints_after_exec (void)
{
- struct breakpoint *b;
- struct breakpoint *temp;
+ struct breakpoint *b, *b_tmp;
struct bp_location *bploc, **bplocp_tmp;
/* We're about to delete breakpoints from GDB's lists. If the
if (bploc->pspace == current_program_space)
gdb_assert (!bploc->inserted);
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
{
if (b->pspace != current_program_space)
continue;
- /* Solib breakpoints must be explicitly reset after an exec(). */
+ /* Solib breakpoints must be explicitly reset after an exec(). */
if (b->type == bp_shlib_event)
{
delete_breakpoint (b);
continue;
}
- /* JIT breakpoints must be explicitly reset after an exec(). */
+ /* JIT breakpoints must be explicitly reset after an exec(). */
if (b->type == bp_jit_event)
{
delete_breakpoint (b);
continue;
}
- /* Step-resume breakpoints are meaningless after an exec(). */
- if (b->type == bp_step_resume)
+ /* Step-resume breakpoints are meaningless after an exec(). */
+ if (b->type == bp_step_resume || b->type == bp_hp_step_resume)
{
delete_breakpoint (b);
continue;
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
+ In the absence 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.
/* Without a symbolic address, we have little hope of the
pre-exec() address meaning the same thing in the post-exec()
- a.out. */
+ a.out. */
if (b->addr_string == NULL)
{
delete_breakpoint (b);
}
}
/* FIXME what about longjmp breakpoints? Re-create them here? */
- create_overlay_event_breakpoint ("_ovly_debug_event");
- create_longjmp_master_breakpoint ("longjmp");
- create_longjmp_master_breakpoint ("_longjmp");
- create_longjmp_master_breakpoint ("siglongjmp");
- create_longjmp_master_breakpoint ("_siglongjmp");
- create_std_terminate_master_breakpoint ("std::terminate()");
+ create_overlay_event_breakpoint ();
+ create_longjmp_master_breakpoint ();
+ create_std_terminate_master_breakpoint ();
create_exception_master_breakpoint ();
}
int
detach_breakpoints (int pid)
{
- struct bp_location *b, **bp_tmp;
+ struct bp_location *bl, **blp_tmp;
int val = 0;
struct cleanup *old_chain = save_inferior_ptid ();
struct inferior *inf = current_inferior ();
/* Set inferior_ptid; remove_breakpoint_1 uses this global. */
inferior_ptid = pid_to_ptid (pid);
- ALL_BP_LOCATIONS (b, bp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (b->pspace != inf->pspace)
+ if (bl->pspace != inf->pspace)
continue;
- if (b->inserted)
- val |= remove_breakpoint_1 (b, mark_inserted);
+ if (bl->inserted)
+ val |= remove_breakpoint_1 (bl, mark_inserted);
}
/* Detach single-step breakpoints as well. */
return val;
}
-/* Remove the breakpoint location B from the current address space.
+/* Remove the breakpoint location BL from the current address space.
Note that this is used to detach breakpoints from a child fork.
When we get here, the child isn't in the inferior list, and neither
do we have objects to represent its address space --- we should
- *not* look at b->pspace->aspace here. */
+ *not* look at bl->pspace->aspace here. */
static int
-remove_breakpoint_1 (struct bp_location *b, insertion_state_t is)
+remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is)
{
int val;
- /* B is never in moribund_locations by our callers. */
- gdb_assert (b->owner != NULL);
+ /* BL is never in moribund_locations by our callers. */
+ gdb_assert (bl->owner != NULL);
- if (b->owner->enable_state == bp_permanent)
+ if (bl->owner->enable_state == bp_permanent)
/* Permanent breakpoints cannot be inserted or removed. */
return 0;
/* The type of none suggests that owner is actually deleted.
This should not ever happen. */
- gdb_assert (b->owner->type != bp_none);
+ gdb_assert (bl->owner->type != bp_none);
- if (b->loc_type == bp_loc_software_breakpoint
- || b->loc_type == bp_loc_hardware_breakpoint)
+ if (bl->loc_type == bp_loc_software_breakpoint
+ || bl->loc_type == bp_loc_hardware_breakpoint)
{
/* "Normal" instruction breakpoint: either the standard
trap-instruction bp (bp_breakpoint), or a
/* First check to see if we have to handle an overlay. */
if (overlay_debugging == ovly_off
- || b->section == NULL
- || !(section_is_overlay (b->section)))
+ || bl->section == NULL
+ || !(section_is_overlay (bl->section)))
{
/* No overlay handling: just remove the breakpoint. */
-
- if (b->loc_type == bp_loc_hardware_breakpoint)
- val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info);
- else
- val = target_remove_breakpoint (b->gdbarch, &b->target_info);
+ val = bl->owner->ops->remove_location (bl);
}
else
{
- /* This breakpoint is in an overlay section.
+ /* This breakpoint is in an overlay section.
Did we set a breakpoint at the LMA? */
if (!overlay_events_enabled)
{
*/
/* Ignore any failures: if the LMA is in ROM, we will
have already warned when we failed to insert it. */
- if (b->loc_type == bp_loc_hardware_breakpoint)
- target_remove_hw_breakpoint (b->gdbarch,
- &b->overlay_target_info);
+ if (bl->loc_type == bp_loc_hardware_breakpoint)
+ target_remove_hw_breakpoint (bl->gdbarch,
+ &bl->overlay_target_info);
else
- target_remove_breakpoint (b->gdbarch,
- &b->overlay_target_info);
+ target_remove_breakpoint (bl->gdbarch,
+ &bl->overlay_target_info);
}
/* Did we set a breakpoint at the VMA?
If so, we will have marked the breakpoint 'inserted'. */
- if (b->inserted)
+ if (bl->inserted)
{
/* Yes -- remove it. Previously we did not bother to
remove the breakpoint if the section had been
unmapped, but let's not rely on that being safe. We
don't know what the overlay manager might do. */
- if (b->loc_type == bp_loc_hardware_breakpoint)
- val = target_remove_hw_breakpoint (b->gdbarch,
- &b->target_info);
/* However, we should remove *software* breakpoints only
if the section is still mapped, or else we overwrite
wrong code with the saved shadow contents. */
- else if (section_is_mapped (b->section))
- val = target_remove_breakpoint (b->gdbarch,
- &b->target_info);
+ if (bl->loc_type == bp_loc_hardware_breakpoint
+ || section_is_mapped (bl->section))
+ val = bl->owner->ops->remove_location (bl);
else
val = 0;
}
/* In some cases, we might not be able to remove a breakpoint
in a shared library that has already been removed, but we
have not yet processed the shlib unload event. */
- if (val && solib_name_from_address (b->pspace, b->address))
+ if (val && solib_name_from_address (bl->pspace, bl->address))
val = 0;
if (val)
return val;
- b->inserted = (is == mark_inserted);
+ bl->inserted = (is == mark_inserted);
}
- else if (b->loc_type == bp_loc_hardware_watchpoint)
+ else if (bl->loc_type == bp_loc_hardware_watchpoint)
{
- b->inserted = (is == mark_inserted);
- val = target_remove_watchpoint (b->address, b->length,
- b->watchpoint_type, b->owner->cond_exp);
+ gdb_assert (bl->owner->ops != NULL
+ && bl->owner->ops->remove_location != NULL);
+
+ bl->inserted = (is == mark_inserted);
+ bl->owner->ops->remove_location (bl);
/* Failure to remove any of the hardware watchpoints comes here. */
- if ((is == mark_uninserted) && (b->inserted))
+ if ((is == mark_uninserted) && (bl->inserted))
warning (_("Could not remove hardware watchpoint %d."),
- b->owner->number);
+ bl->owner->number);
}
- else if (b->owner->type == bp_catchpoint
- && breakpoint_enabled (b->owner)
- && !b->duplicate)
+ else if (bl->owner->type == bp_catchpoint
+ && breakpoint_enabled (bl->owner)
+ && !bl->duplicate)
{
- gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL);
+ gdb_assert (bl->owner->ops != NULL
+ && bl->owner->ops->remove_location != NULL);
- val = b->owner->ops->remove (b->owner);
+ val = bl->owner->ops->remove_location (bl);
if (val)
return val;
- b->inserted = (is == mark_inserted);
+
+ bl->inserted = (is == mark_inserted);
}
return 0;
}
static int
-remove_breakpoint (struct bp_location *b, insertion_state_t is)
+remove_breakpoint (struct bp_location *bl, insertion_state_t is)
{
int ret;
struct cleanup *old_chain;
- /* B is never in moribund_locations by our callers. */
- gdb_assert (b->owner != NULL);
+ /* BL is never in moribund_locations by our callers. */
+ gdb_assert (bl->owner != NULL);
- if (b->owner->enable_state == bp_permanent)
+ if (bl->owner->enable_state == bp_permanent)
/* Permanent breakpoints cannot be inserted or removed. */
return 0;
/* The type of none suggests that owner is actually deleted.
This should not ever happen. */
- gdb_assert (b->owner->type != bp_none);
+ gdb_assert (bl->owner->type != bp_none);
old_chain = save_current_space_and_thread ();
- switch_to_program_space_and_thread (b->pspace);
+ switch_to_program_space_and_thread (bl->pspace);
- ret = remove_breakpoint_1 (b, is);
+ ret = remove_breakpoint_1 (bl, is);
do_cleanups (old_chain);
return ret;
void
mark_breakpoints_out (void)
{
- struct bp_location *bpt, **bptp_tmp;
+ struct bp_location *bl, **blp_tmp;
- ALL_BP_LOCATIONS (bpt, bptp_tmp)
- if (bpt->pspace == current_program_space)
- bpt->inserted = 0;
+ ALL_BP_LOCATIONS (bl, blp_tmp)
+ if (bl->pspace == current_program_space)
+ bl->inserted = 0;
}
/* Clear the "inserted" flag in all breakpoints and delete any
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). */
+ init_wait_for_inferior). */
void
breakpoint_init_inferior (enum inf_context context)
{
- struct breakpoint *b, *temp;
- struct bp_location *bpt, **bptp_tmp;
+ struct breakpoint *b, *b_tmp;
+ struct bp_location *bl, **blp_tmp;
int ix;
struct program_space *pspace = current_program_space;
if (gdbarch_has_global_breakpoints (target_gdbarch))
return;
- ALL_BP_LOCATIONS (bpt, bptp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */
- if (bpt->pspace == pspace
- && bpt->owner->enable_state != bp_permanent)
- bpt->inserted = 0;
+ /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */
+ if (bl->pspace == pspace
+ && bl->owner->enable_state != bp_permanent)
+ bl->inserted = 0;
}
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
{
if (b->loc && b->loc->pspace != pspace)
continue;
case bp_hardware_watchpoint:
case bp_read_watchpoint:
case bp_access_watchpoint:
+ {
+ struct watchpoint *w = (struct watchpoint *) b;
- /* Likewise for watchpoints on local expressions. */
- if (b->exp_valid_block != NULL)
- delete_breakpoint (b);
- else if (context == inf_starting)
- {
- /* Reset val field to force reread of starting value
- in insert_breakpoints. */
- if (b->val)
- value_free (b->val);
- b->val = NULL;
- b->val_valid = 0;
+ /* Likewise for watchpoints on local expressions. */
+ if (w->exp_valid_block != NULL)
+ delete_breakpoint (b);
+ else if (context == inf_starting)
+ {
+ /* Reset val field to force reread of starting value in
+ insert_breakpoints. */
+ if (w->val)
+ value_free (w->val);
+ w->val = NULL;
+ w->val_valid = 0;
}
+ }
break;
default:
break;
}
/* Get rid of the moribund locations. */
- for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix)
- decref_bp_location (&bpt);
+ for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix)
+ decref_bp_location (&bl);
VEC_free (bp_location_p, moribund_locations);
}
permanent breakpoint.
- When continuing from a location with an ordinary breakpoint, we
actually single step once before calling insert_breakpoints.
- - When continuing from a localion with a permanent breakpoint, we
+ - When continuing from a location with a permanent breakpoint, we
need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
the target, to advance the PC past the breakpoint. */
enum breakpoint_here
breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc)
{
- struct bp_location *bpt, **bptp_tmp;
+ struct bp_location *bl, **blp_tmp;
int any_breakpoint_here = 0;
- ALL_BP_LOCATIONS (bpt, bptp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (bpt->loc_type != bp_loc_software_breakpoint
- && bpt->loc_type != bp_loc_hardware_breakpoint)
+ if (bl->loc_type != bp_loc_software_breakpoint
+ && bl->loc_type != bp_loc_hardware_breakpoint)
continue;
- /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */
- if ((breakpoint_enabled (bpt->owner)
- || bpt->owner->enable_state == bp_permanent)
- && breakpoint_address_match (bpt->pspace->aspace, bpt->address,
- aspace, pc))
+ /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */
+ if ((breakpoint_enabled (bl->owner)
+ || bl->owner->enable_state == bp_permanent)
+ && breakpoint_location_address_match (bl, aspace, pc))
{
if (overlay_debugging
- && section_is_overlay (bpt->section)
- && !section_is_mapped (bpt->section))
+ && section_is_overlay (bl->section)
+ && !section_is_mapped (bl->section))
continue; /* unmapped overlay -- can't be a match */
- else if (bpt->owner->enable_state == bp_permanent)
+ else if (bl->owner->enable_state == bp_permanent)
return permanent_breakpoint_here;
else
any_breakpoint_here = 1;
int ix;
for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
- if (breakpoint_address_match (loc->pspace->aspace, loc->address,
- aspace, pc))
+ if (breakpoint_location_address_match (loc, aspace, pc))
return 1;
return 0;
}
/* Returns non-zero if there's a breakpoint inserted at PC, which is
- inserted using regular breakpoint_chain / bp_location array mechanism.
- This does not check for single-step breakpoints, which are
- inserted and removed using direct target manipulation. */
+ inserted using regular breakpoint_chain / bp_location array
+ mechanism. This does not check for single-step breakpoints, which
+ are inserted and removed using direct target manipulation. */
int
-regular_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc)
+regular_breakpoint_inserted_here_p (struct address_space *aspace,
+ CORE_ADDR pc)
{
- struct bp_location *bpt, **bptp_tmp;
+ struct bp_location *bl, **blp_tmp;
- ALL_BP_LOCATIONS (bpt, bptp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (bpt->loc_type != bp_loc_software_breakpoint
- && bpt->loc_type != bp_loc_hardware_breakpoint)
+ if (bl->loc_type != bp_loc_software_breakpoint
+ && bl->loc_type != bp_loc_hardware_breakpoint)
continue;
- if (bpt->inserted
- && breakpoint_address_match (bpt->pspace->aspace, bpt->address,
- aspace, pc))
+ if (bl->inserted
+ && breakpoint_location_address_match (bl, aspace, pc))
{
if (overlay_debugging
- && section_is_overlay (bpt->section)
- && !section_is_mapped (bpt->section))
+ && section_is_overlay (bl->section)
+ && !section_is_mapped (bl->section))
continue; /* unmapped overlay -- can't be a match */
else
return 1;
inserted at PC. */
int
-software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc)
+software_breakpoint_inserted_here_p (struct address_space *aspace,
+ CORE_ADDR pc)
{
- struct bp_location *bpt, **bptp_tmp;
+ struct bp_location *bl, **blp_tmp;
- ALL_BP_LOCATIONS (bpt, bptp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (bpt->loc_type != bp_loc_software_breakpoint)
+ if (bl->loc_type != bp_loc_software_breakpoint)
continue;
- if (bpt->inserted
- && breakpoint_address_match (bpt->pspace->aspace, bpt->address,
+ if (bl->inserted
+ && breakpoint_address_match (bl->pspace->aspace, bl->address,
aspace, pc))
{
if (overlay_debugging
- && section_is_overlay (bpt->section)
- && !section_is_mapped (bpt->section))
+ && section_is_overlay (bl->section)
+ && !section_is_mapped (bl->section))
continue; /* unmapped overlay -- can't be a match */
else
return 1;
breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc,
ptid_t ptid)
{
- struct bp_location *bpt, **bptp_tmp;
+ struct bp_location *bl, **blp_tmp;
/* The thread and task IDs associated to PTID, computed lazily. */
int thread = -1;
int task = 0;
- ALL_BP_LOCATIONS (bpt, bptp_tmp)
+ ALL_BP_LOCATIONS (bl, blp_tmp)
{
- if (bpt->loc_type != bp_loc_software_breakpoint
- && bpt->loc_type != bp_loc_hardware_breakpoint)
+ if (bl->loc_type != bp_loc_software_breakpoint
+ && bl->loc_type != bp_loc_hardware_breakpoint)
continue;
- /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */
- if (!breakpoint_enabled (bpt->owner)
- && bpt->owner->enable_state != bp_permanent)
+ /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */
+ if (!breakpoint_enabled (bl->owner)
+ && bl->owner->enable_state != bp_permanent)
continue;
- if (!breakpoint_address_match (bpt->pspace->aspace, bpt->address,
- aspace, pc))
+ if (!breakpoint_location_address_match (bl, aspace, pc))
continue;
- if (bpt->owner->thread != -1)
+ if (bl->owner->thread != -1)
{
/* This is a thread-specific breakpoint. Check that ptid
matches that thread. If thread hasn't been computed yet,
it is now time to do so. */
if (thread == -1)
thread = pid_to_thread_id (ptid);
- if (bpt->owner->thread != thread)
+ if (bl->owner->thread != thread)
continue;
}
- if (bpt->owner->task != 0)
+ if (bl->owner->task != 0)
{
/* This is a task-specific breakpoint. Check that ptid
matches that task. If task hasn't been computed yet,
it is now time to do so. */
if (task == 0)
task = ada_get_task_number (ptid);
- if (bpt->owner->task != task)
+ if (bl->owner->task != task)
continue;
}
if (overlay_debugging
- && section_is_overlay (bpt->section)
- && !section_is_mapped (bpt->section))
+ && section_is_overlay (bl->section)
+ && !section_is_mapped (bl->section))
continue; /* unmapped overlay -- can't be a match */
return 1;
return retval;
}
-/* Find the bpstat associated with this breakpoint */
+/* Find the bpstat associated with this breakpoint. */
bpstat
bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint)
return NULL;
}
-/* Put in *NUM the breakpoint number of the first breakpoint we are stopped
- at. *BSP upon return is a bpstat which points to the remaining
- breakpoints stopped at (but which is not guaranteed to be good for
- anything but further calls to bpstat_num).
+/* Put in *NUM the breakpoint number of the first breakpoint we are
+ stopped at. *BSP upon return is a bpstat which points to the
+ remaining breakpoints stopped at (but which is not guaranteed to be
+ good for anything but further calls to bpstat_num).
+
Return 0 if passed a bpstat which does not indicate any breakpoints.
Return -1 if stopped at a breakpoint that has been deleted since
we set it.
if ((*bsp) == NULL)
return 0; /* No more breakpoint values */
- /* We assume we'll never have several bpstats that
- correspond to a single breakpoint -- otherwise,
- this function might return the same number more
- than once and this will look ugly. */
+ /* We assume we'll never have several bpstats that correspond to a
+ single breakpoint -- otherwise, this function might return the
+ same number more than once and this will look ugly. */
b = (*bsp)->breakpoint_at;
*bsp = (*bsp)->next;
if (b == NULL)
return 1;
}
-/* Modify BS so that the actions will not be performed. */
+/* See breakpoint.h. */
void
-bpstat_clear_actions (bpstat bs)
+bpstat_clear_actions (void)
{
- for (; bs != NULL; bs = bs->next)
+ struct thread_info *tp;
+ bpstat bs;
+
+ if (ptid_equal (inferior_ptid, null_ptid))
+ return;
+
+ tp = find_thread_ptid (inferior_ptid);
+ if (tp == NULL)
+ return;
+
+ for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next)
{
decref_counted_command_line (&bs->commands);
- bs->commands_left = NULL;
+
if (bs->old_val != NULL)
{
value_free (bs->old_val);
breakpoint_proceeded = 1;
}
-/* Stub for cleaning up our state if we error-out of a breakpoint command */
+/* Stub for cleaning up our state if we error-out of a breakpoint
+ command. */
static void
cleanup_executing_breakpoints (void *ignore)
{
executing_breakpoint_commands = 0;
}
-/* Execute all the commands associated with all the breakpoints at this
- location. Any of these commands could cause the process to proceed
- beyond this point, etc. We look out for such changes by checking
- the global "breakpoint_proceeded" after each command.
+/* Return non-zero iff CMD as the first line of a command sequence is `silent'
+ or its equivalent. */
+
+static int
+command_line_is_silent (struct command_line *cmd)
+{
+ return cmd && (strcmp ("silent", cmd->line) == 0
+ || (xdb_commands && strcmp ("Q", cmd->line) == 0));
+}
+
+/* Execute all the commands associated with all the breakpoints at
+ this location. Any of these commands could cause the process to
+ proceed beyond this point, etc. We look out for such changes by
+ checking the global "breakpoint_proceeded" after each command.
Returns true if a breakpoint command resumed the inferior. In that
case, it is the caller's responsibility to recall it again with the
executing_breakpoint_commands = 1;
old_chain = make_cleanup (cleanup_executing_breakpoints, 0);
- /* This pointer will iterate over the list of bpstat's. */
+ prevent_dont_repeat ();
+
+ /* This pointer will iterate over the list of bpstat's. */
bs = *bsp;
breakpoint_proceeded = 0;
the tree when we're done. */
ccmd = bs->commands;
bs->commands = NULL;
- this_cmd_tree_chain
- = make_cleanup_decref_counted_command_line (&ccmd);
- cmd = bs->commands_left;
- bs->commands_left = NULL;
+ this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd);
+ cmd = ccmd ? ccmd->commands : NULL;
+ if (command_line_is_silent (cmd))
+ {
+ /* The action has been already done by bpstat_stop_status. */
+ cmd = cmd->next;
+ }
while (cmd != NULL)
{
void
bpstat_do_actions (void)
{
+ struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup ();
+
/* Do any commands attached to breakpoint we are stopped at. */
while (!ptid_equal (inferior_ptid, null_ptid)
&& target_has_execution
indicate the inferior was not resumed. */
if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat))
break;
+
+ discard_cleanups (cleanup_if_error);
}
/* Print out the (old or new) value associated with a watchpoint. */
}
}
-/* This is the normal print 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 values.
-
- Current scheme: When we stop, bpstat_print() is called. It loops
- through the bpstat list of things causing this stop, calling the
- print_bp_stop_message function on each one. The behavior of the
- print_bp_stop_message function depends on the print_it field of
- bpstat. If such field so indicates, call this function here.
-
- Return values from this routine (ultimately used by bpstat_print()
- and normal_stop() to decide what to do):
- PRINT_NOTHING: Means we already printed all we needed to print,
- don't print anything else.
- PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
- that something to be followed by a location.
- PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
- that something to be followed by a location.
- PRINT_UNKNOWN: Means we printed nothing or we need to do some more
- analysis. */
-
-static enum print_stop_action
-print_it_typical (bpstat bs)
-{
- struct cleanup *old_chain;
- struct breakpoint *b;
- const struct bp_location *bl;
- struct ui_stream *stb;
- int bp_temp = 0;
- enum print_stop_action result;
-
- /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
- which has since been deleted. */
- if (bs->breakpoint_at == NULL)
- return PRINT_UNKNOWN;
-
- gdb_assert (bs->bp_location_at != NULL);
-
- bl = bs->bp_location_at;
- b = bs->breakpoint_at;
-
- stb = ui_out_stream_new (uiout);
- old_chain = make_cleanup_ui_out_stream_delete (stb);
-
- switch (b->type)
- {
- case bp_breakpoint:
- case bp_hardware_breakpoint:
- bp_temp = b->disposition == disp_del;
- if (bl->address != bl->requested_address)
- breakpoint_adjustment_warning (bl->requested_address,
- bl->address,
- b->number, 1);
- annotate_breakpoint (b->number);
- if (bp_temp)
- ui_out_text (uiout, "\nTemporary breakpoint ");
- else
- ui_out_text (uiout, "\nBreakpoint ");
- if (ui_out_is_mi_like_p (uiout))
- {
- ui_out_field_string (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
- ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
- }
- ui_out_field_int (uiout, "bkptno", b->number);
- ui_out_text (uiout, ", ");
- result = PRINT_SRC_AND_LOC;
- break;
-
- case bp_shlib_event:
- /* Did we stop because the user set the stop_on_solib_events
- variable? (If so, we report this as a generic, "Stopped due
- to shlib event" message.) */
- printf_filtered (_("Stopped due to shared library event\n"));
- result = PRINT_NOTHING;
- break;
-
- case bp_thread_event:
- /* Not sure how we will get here.
- GDB should not stop for these breakpoints. */
- printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n"));
- result = PRINT_NOTHING;
- break;
-
- case bp_overlay_event:
- /* By analogy with the thread event, GDB should not stop for these. */
- printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n"));
- result = PRINT_NOTHING;
- break;
-
- case bp_longjmp_master:
- /* These should never be enabled. */
- printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n"));
- result = PRINT_NOTHING;
- break;
-
- case bp_std_terminate_master:
- /* These should never be enabled. */
- printf_filtered (_("std::terminate Master Breakpoint: gdb should not stop!\n"));
- result = PRINT_NOTHING;
- break;
-
- case bp_exception_master:
- /* These should never be enabled. */
- printf_filtered (_("Exception Master Breakpoint: gdb should not stop!\n"));
- result = PRINT_NOTHING;
- break;
-
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- annotate_watchpoint (b->number);
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER));
- mention (b);
- make_cleanup_ui_out_tuple_begin_end (uiout, "value");
- ui_out_text (uiout, "\nOld value = ");
- watchpoint_value_print (bs->old_val, stb->stream);
- ui_out_field_stream (uiout, "old", stb);
- ui_out_text (uiout, "\nNew value = ");
- watchpoint_value_print (b->val, stb->stream);
- ui_out_field_stream (uiout, "new", stb);
- ui_out_text (uiout, "\n");
- /* More than one watchpoint may have been triggered. */
- result = PRINT_UNKNOWN;
- break;
-
- case bp_read_watchpoint:
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER));
- mention (b);
- make_cleanup_ui_out_tuple_begin_end (uiout, "value");
- ui_out_text (uiout, "\nValue = ");
- watchpoint_value_print (b->val, stb->stream);
- ui_out_field_stream (uiout, "value", stb);
- ui_out_text (uiout, "\n");
- result = PRINT_UNKNOWN;
- break;
-
- case bp_access_watchpoint:
- if (bs->old_val != NULL)
- {
- annotate_watchpoint (b->number);
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
- mention (b);
- make_cleanup_ui_out_tuple_begin_end (uiout, "value");
- ui_out_text (uiout, "\nOld value = ");
- watchpoint_value_print (bs->old_val, stb->stream);
- ui_out_field_stream (uiout, "old", stb);
- ui_out_text (uiout, "\nNew value = ");
- }
- else
- {
- mention (b);
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
- make_cleanup_ui_out_tuple_begin_end (uiout, "value");
- ui_out_text (uiout, "\nValue = ");
- }
- watchpoint_value_print (b->val, stb->stream);
- ui_out_field_stream (uiout, "new", stb);
- ui_out_text (uiout, "\n");
- result = PRINT_UNKNOWN;
- break;
-
- /* Fall through, we don't deal with these types of breakpoints
- here. */
-
- case bp_finish:
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED));
- result = PRINT_UNKNOWN;
- break;
-
- case bp_until:
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string
- (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED));
- result = PRINT_UNKNOWN;
- break;
-
- case bp_none:
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_exception:
- case bp_exception_resume:
- case bp_step_resume:
- case bp_watchpoint_scope:
- case bp_call_dummy:
- case bp_std_terminate:
- case bp_tracepoint:
- case bp_fast_tracepoint:
- case bp_jit_event:
- default:
- result = PRINT_UNKNOWN;
- break;
- }
-
- do_cleanups (old_chain);
- return result;
-}
-
/* Generic routine for printing messages indicating why we
- stopped. The behavior of this function depends on the value
+ stopped. The behavior of this function depends on the value
'print_it' in the bpstat structure. Under some circumstances we
may decide not to print anything here and delegate the task to
- normal_stop(). */
+ normal_stop(). */
static enum print_stop_action
print_bp_stop_message (bpstat bs)
switch (bs->print_it)
{
case print_it_noop:
- /* Nothing should be printed for this bpstat entry. */
+ /* Nothing should be printed for this bpstat entry. */
return PRINT_UNKNOWN;
break;
case print_it_done:
/* We still want to print the frame, but we already printed the
- relevant messages. */
+ relevant messages. */
return PRINT_SRC_AND_LOC;
break;
{
struct breakpoint *b = bs->breakpoint_at;
- /* Normal case. Call the breakpoint's print_it method, or
- print_it_typical. */
- /* FIXME: how breakpoint can ever be NULL here? */
- if (b != NULL && b->ops != NULL && b->ops->print_it != NULL)
- return b->ops->print_it (b);
- else
- return print_it_typical (bs);
+ /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
+ which has since been deleted. */
+ if (b == NULL)
+ return PRINT_UNKNOWN;
+
+ /* Normal case. Call the breakpoint's print_it method. */
+ return b->ops->print_it (bs);
}
- break;
+ break;
default:
internal_error (__FILE__, __LINE__,
"Breakpoint n," part of the output. The return value of this
routine is one of:
- PRINT_UNKNOWN: Means we printed nothing
+ PRINT_UNKNOWN: Means we printed nothing.
PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
- code to print the location. An example is
+ code to print the location. An example is
"Breakpoint 1, " which should be followed by
the location.
PRINT_SRC_ONLY: 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.
+ don't require a location appended to the end.
PRINT_NOTHING: We have done some printing and we don't need any
- further info to be printed.*/
+ further info to be printed. */
enum print_stop_action
bpstat_print (bpstat bs)
}
/* We reached the end of the chain, or we got a null BS to start
- with and nothing was printed. */
+ with and nothing was printed. */
return PRINT_UNKNOWN;
}
-/* Evaluate the expression EXP and return 1 if value is zero.
- This is used inside a catch_errors to evaluate the breakpoint condition.
- The argument is a "struct expression *" that has been cast to char * to
- make it pass through catch_errors. */
+/* Evaluate the expression EXP and return 1 if value is zero. This is
+ used inside a catch_errors to evaluate the breakpoint condition.
+ The argument is a "struct expression *" that has been cast to a
+ "char *" to make it pass through catch_errors. */
static int
breakpoint_cond_eval (void *exp)
incref_bp_location (bl);
/* If the condition is false, etc., don't do the commands. */
bs->commands = NULL;
- bs->commands_left = NULL;
bs->old_val = NULL;
bs->print_it = print_it_normal;
return bs;
as not triggered. */
ALL_BREAKPOINTS (b)
if (is_hardware_watchpoint (b))
- b->watchpoint_triggered = watch_triggered_no;
+ {
+ struct watchpoint *w = (struct watchpoint *) b;
+
+ w->watchpoint_triggered = watch_triggered_no;
+ }
return 0;
}
Mark all watchpoints as unknown. */
ALL_BREAKPOINTS (b)
if (is_hardware_watchpoint (b))
- b->watchpoint_triggered = watch_triggered_unknown;
+ {
+ struct watchpoint *w = (struct watchpoint *) b;
- return stopped_by_watchpoint;
+ w->watchpoint_triggered = watch_triggered_unknown;
+ }
+
+ return stopped_by_watchpoint;
}
/* The target could report the data address. Mark watchpoints
ALL_BREAKPOINTS (b)
if (is_hardware_watchpoint (b))
{
+ struct watchpoint *w = (struct watchpoint *) b;
struct bp_location *loc;
- b->watchpoint_triggered = watch_triggered_no;
+ w->watchpoint_triggered = watch_triggered_no;
for (loc = b->loc; loc; loc = loc->next)
- /* Exact match not required. Within range is
- sufficient. */
- if (target_watchpoint_addr_within_range (¤t_target,
- addr, loc->address,
- loc->length))
- {
- b->watchpoint_triggered = watch_triggered_yes;
- break;
- }
+ {
+ if (is_masked_watchpoint (b))
+ {
+ CORE_ADDR newaddr = addr & w->hw_wp_mask;
+ CORE_ADDR start = loc->address & w->hw_wp_mask;
+
+ if (newaddr == start)
+ {
+ w->watchpoint_triggered = watch_triggered_yes;
+ break;
+ }
+ }
+ /* Exact match not required. Within range is sufficient. */
+ else if (target_watchpoint_addr_within_range (¤t_target,
+ addr, loc->address,
+ loc->length))
+ {
+ w->watchpoint_triggered = watch_triggered_yes;
+ break;
+ }
+ }
}
return 1;
#define BP_TEMPFLAG 1
#define BP_HARDWAREFLAG 2
-/* Evaluate watchpoint condition expression and check if its value changed.
+/* Evaluate watchpoint condition expression and check if its value
+ changed.
P should be a pointer to struct bpstat, but is defined as a void *
in order for this function to be usable with catch_errors. */
watchpoint_check (void *p)
{
bpstat bs = (bpstat) p;
- struct breakpoint *b;
+ struct watchpoint *b;
struct frame_info *fr;
int within_current_scope;
/* BS is built from an existing struct breakpoint. */
gdb_assert (bs->breakpoint_at != NULL);
- b = bs->breakpoint_at;
+ b = (struct watchpoint *) bs->breakpoint_at;
/* If this is a local watchpoint, we only want to check if the
watchpoint frame is in scope if the current thread is the thread
struct gdbarch *frame_arch = get_frame_arch (frame);
CORE_ADDR frame_pc = get_frame_pc (frame);
- /* in_function_epilogue_p() returns a non-zero value if we're still
- in the function but the stack frame has already been invalidated.
- Since we can't rely on the values of local variables after the
- stack has been destroyed, we are treating the watchpoint in that
- state as `not changed' without further checking. Don't mark
- watchpoints as changed if the current frame is in an epilogue -
- even if they are in some other frame, our view of the stack
- is likely to be wrong and frame_find_by_id could error out. */
+ /* in_function_epilogue_p() returns a non-zero value if we're
+ still in the function but the stack frame has already been
+ invalidated. Since we can't rely on the values of local
+ variables after the stack has been destroyed, we are treating
+ the watchpoint in that state as `not changed' without further
+ checking. Don't mark watchpoints as changed if the current
+ frame is in an epilogue - even if they are in some other
+ frame, our view of the stack is likely to be wrong and
+ frame_find_by_id could error out. */
if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc))
return WP_IGNORE;
if (within_current_scope)
{
- /* 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. We can't call free_all_values because
- we might be in the middle of evaluating a function call. */
+ /* 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. We can't call free_all_values because we
+ might be in the middle of evaluating a function call. */
int pc = 0;
- struct value *mark = value_mark ();
+ struct value *mark;
struct value *new_val;
+ if (is_masked_watchpoint (&b->base))
+ /* Since we don't know the exact trigger address (from
+ stopped_data_address), just tell the user we've triggered
+ a mask watchpoint. */
+ return WP_VALUE_CHANGED;
+
+ mark = value_mark ();
fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL);
- /* We use value_equal_contents instead of value_equal because the latter
- coerces an array to a pointer, thus comparing just the address of the
- array instead of its contents. This is not what we want. */
+ /* We use value_equal_contents instead of value_equal because
+ the latter coerces an array to a pointer, thus comparing just
+ the address of the array instead of its contents. This is
+ not what we want. */
if ((b->val != NULL) != (new_val != NULL)
|| (b->val != NULL && !value_equal_contents (b->val, new_val)))
{
}
else
{
+ struct ui_out *uiout = current_uiout;
+
/* This seems like the only logical thing to do because
if we temporarily ignored the watchpoint, then when
we reenter the block in which it is valid it contains
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). */
- /* We print all the stop information in print_it_typical(), but
- in this case, by the time we call print_it_typical() this bp
- will be deleted already. So we have no choice but print the
- information here. */
+ /* We print all the stop information in
+ breakpoint_ops->print_it, but in this case, by the time we
+ call breakpoint_ops->print_it this bp will be deleted
+ already. So we have no choice but print the information
+ here. */
if (ui_out_is_mi_like_p (uiout))
ui_out_field_string
(uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE));
ui_out_text (uiout, "\nWatchpoint ");
- ui_out_field_int (uiout, "wpnum", b->number);
- ui_out_text (uiout, " deleted because the program has left the block in\n\
+ ui_out_field_int (uiout, "wpnum", b->base.number);
+ ui_out_text (uiout,
+ " deleted because the program has left the block in\n\
which its expression is valid.\n");
- if (b->related_breakpoint)
- {
- b->related_breakpoint->disposition = disp_del_at_next_stop;
- b->related_breakpoint->related_breakpoint = NULL;
- b->related_breakpoint = NULL;
- }
- b->disposition = disp_del_at_next_stop;
+ /* Make sure the watchpoint's commands aren't executed. */
+ decref_counted_command_line (&b->base.commands);
+ watchpoint_del_at_next_stop (b);
return WP_DELETED;
}
}
/* Return true if it looks like target has stopped due to hitting
- breakpoint location BL. This function does not check if we
- should stop, only if BL explains the stop. */
+ breakpoint location BL. This function does not check if we should
+ stop, only if BL explains the stop. */
+
static int
bpstat_check_location (const struct bp_location *bl,
struct address_space *aspace, CORE_ADDR bp_addr)
{
struct breakpoint *b = bl->owner;
- /* BL is from existing struct breakpoint. */
+ /* BL is from an existing breakpoint. */
gdb_assert (b != NULL);
- /* By definition, the inferior does not report stops at
- tracepoints. */
- if (is_tracepoint (b))
- return 0;
-
- if (!is_watchpoint (b)
- && b->type != bp_hardware_breakpoint
- && b->type != bp_catchpoint) /* a non-watchpoint bp */
- {
- if (!breakpoint_address_match (bl->pspace->aspace, bl->address,
- aspace, bp_addr))
- return 0;
- if (overlay_debugging /* unmapped overlay section */
- && section_is_overlay (bl->section)
- && !section_is_mapped (bl->section))
- return 0;
- }
-
- /* Continuable hardware watchpoints are treated as non-existent if the
- reason we stopped wasn't a hardware watchpoint (we didn't stop on
- some data address). Otherwise gdb won't stop on a break instruction
- in the code (not from a breakpoint) when a hardware watchpoint has
- been defined. Also skip watchpoints which we know did not trigger
- (did not match the data address). */
-
- if (is_hardware_watchpoint (b)
- && b->watchpoint_triggered == watch_triggered_no)
- return 0;
-
- if (b->type == bp_hardware_breakpoint)
- {
- if (bl->address != bp_addr)
- return 0;
- if (overlay_debugging /* unmapped overlay section */
- && section_is_overlay (bl->section)
- && !section_is_mapped (bl->section))
- return 0;
- }
-
- if (b->type == bp_catchpoint)
- {
- gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL);
- if (!b->ops->breakpoint_hit (b))
- return 0;
- }
-
- return 1;
+ return b->ops->breakpoint_hit (bl, aspace, bp_addr);
}
-/* If BS refers to a watchpoint, determine if the watched values
- has actually changed, and we should stop. If not, set BS->stop
- to 0. */
+/* Determine if the watched values have actually changed, and we
+ should stop. If not, set BS->stop to 0. */
+
static void
bpstat_check_watchpoint (bpstat bs)
{
const struct bp_location *bl;
- struct breakpoint *b;
+ struct watchpoint *b;
/* BS is built for existing struct breakpoint. */
bl = bs->bp_location_at;
gdb_assert (bl != NULL);
- b = bs->breakpoint_at;
+ b = (struct watchpoint *) bs->breakpoint_at;
gdb_assert (b != NULL);
- if (is_watchpoint (b))
{
int must_check_value = 0;
- if (b->type == bp_watchpoint)
+ if (b->base.type == bp_watchpoint)
/* For a software watchpoint, we must always check the
watched value. */
must_check_value = 1;
this watchpoint. */
must_check_value = 1;
else if (b->watchpoint_triggered == watch_triggered_unknown
- && b->type == bp_hardware_watchpoint)
+ && b->base.type == bp_hardware_watchpoint)
/* We were stopped by a hardware watchpoint, but the target could
not report the data address. We must check the watchpoint's
value. Access and read watchpoints are out of luck; without
a data address, we can't figure it out. */
must_check_value = 1;
-
+
if (must_check_value)
{
- char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n",
- b->number);
+ char *message
+ = xstrprintf ("Error evaluating expression for watchpoint %d\n",
+ b->base.number);
struct cleanup *cleanups = make_cleanup (xfree, message);
int e = catch_errors (watchpoint_check, bs, message,
RETURN_MASK_ALL);
bs->stop = 0;
break;
case WP_VALUE_CHANGED:
- if (b->type == bp_read_watchpoint)
+ if (b->base.type == bp_read_watchpoint)
{
/* There are two cases to consider here:
- 1. we're watching the triggered memory for reads.
+ 1. We're watching the triggered memory for reads.
In that case, trust the target, and always report
the watchpoint hit to the user. Even though
reads don't cause value changes, the value may
those, and as such we should ignore our notion of
old value.
- 2. we're watching the triggered memory for both
+ 2. We're watching the triggered memory for both
reads and writes. There are two ways this may
happen:
- 2.1. this is a target that can't break on data
+ 2.1. This is a target that can't break on data
reads only, but can break on accesses (reads or
writes), such as e.g., x86. We detect this case
at the time we try to insert read watchpoints.
- 2.2. otherwise, the target supports read
+ 2.2. Otherwise, the target supports read
watchpoints, but, the user set an access or write
watchpoint watching the same memory as this read
watchpoint.
struct breakpoint *other_b;
ALL_BREAKPOINTS (other_b)
- if ((other_b->type == bp_hardware_watchpoint
- || other_b->type == bp_access_watchpoint)
- && (other_b->watchpoint_triggered
- == watch_triggered_yes))
+ if (other_b->type == bp_hardware_watchpoint
+ || other_b->type == bp_access_watchpoint)
{
- other_write_watchpoint = 1;
- break;
+ struct watchpoint *other_w =
+ (struct watchpoint *) other_b;
+
+ if (other_w->watchpoint_triggered
+ == watch_triggered_yes)
+ {
+ other_write_watchpoint = 1;
+ break;
+ }
}
}
}
break;
case WP_VALUE_NOT_CHANGED:
- if (b->type == bp_hardware_watchpoint
- || b->type == bp_watchpoint)
+ if (b->base.type == bp_hardware_watchpoint
+ || b->base.type == bp_watchpoint)
{
/* Don't stop: write watchpoints shouldn't fire if
the value hasn't changed. */
/* 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 = disp_del_at_next_stop;
- b->disposition = disp_del_at_next_stop;
+ printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number);
+ watchpoint_del_at_next_stop (b);
/* We've already printed what needs to be printed. */
bs->print_it = print_it_done;
break;
int value_is_zero = 0;
struct expression *cond;
+ /* Evaluate Python breakpoints that have a "stop"
+ method implemented. */
+ if (b->py_bp_object)
+ bs->stop = gdbpy_should_stop (b->py_bp_object);
+
if (is_watchpoint (b))
- cond = b->cond_exp;
+ {
+ struct watchpoint *w = (struct watchpoint *) b;
+
+ cond = w->cond_exp;
+ }
else
cond = bl->cond;
if (cond && b->disposition != disp_del_at_next_stop)
{
int within_current_scope = 1;
+ struct watchpoint * w;
/* We use value_mark and value_free_to_mark because it could
be a long time before we return to the command level and
function call. */
struct value *mark = value_mark ();
+ if (is_watchpoint (b))
+ w = (struct watchpoint *) b;
+ else
+ w = NULL;
+
/* Need to select the frame, with all that implies so that
the conditions will have the right context. Because we
use the frame, we will not see an inlined function's
variables when we arrive at a breakpoint at the start
of the inlined function; the current frame will be the
call site. */
- if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL)
+ if (w == NULL || w->cond_exp_valid_block == NULL)
select_frame (get_current_frame ());
else
{
the innermost frame that's executing where it makes
sense to evaluate the condition. It seems
intuitive. */
- frame = block_innermost_frame (b->cond_exp_valid_block);
+ frame = block_innermost_frame (w->cond_exp_valid_block);
if (frame != NULL)
select_frame (frame);
else
watchpoint, unconditionally report it. */
value_is_zero = 0;
}
- /* FIXME-someday, should give breakpoint # */
+ /* FIXME-someday, should give breakpoint #. */
value_free_to_mark (mark);
}
b->ignore_count--;
annotate_ignore_count_change ();
bs->stop = 0;
- /* Increase the hit count even though we don't
- stop. */
+ /* Increase the hit count even though we don't stop. */
++(b->hit_count);
+ observer_notify_breakpoint_modified (b);
}
}
}
BP_ADDR in thread PTID.
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:
+ 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.
for (bl = b->loc; bl != NULL; bl = bl->next)
{
- /* For hardware watchpoints, we look only at the first location.
- The watchpoint_check function will work on the entire expression,
- not the individual locations. For read watchpoints, the
- watchpoints_triggered function has checked all locations
- already. */
+ /* For hardware watchpoints, we look only at the first
+ location. The watchpoint_check function will work on the
+ entire expression, not the individual locations. For
+ read watchpoints, the watchpoints_triggered function has
+ checked all locations already. */
if (b->type == bp_hardware_watchpoint && bl != b->loc)
break;
if (!bpstat_check_location (bl, aspace, bp_addr))
continue;
- /* Come here if it's a watchpoint, or if the break address matches */
+ /* Come here if it's a watchpoint, or if the break address
+ matches. */
- bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to explain stop */
+ bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to
+ explain stop. */
/* Assume we stop. Should we find a watchpoint that is not
actually triggered, or if the condition of the breakpoint
watchpoint as triggered so that we will handle the
out-of-scope event. We'll get to the watchpoint next
iteration. */
- if (b->type == bp_watchpoint_scope)
- b->related_breakpoint->watchpoint_triggered = watch_triggered_yes;
+ if (b->type == bp_watchpoint_scope && b->related_breakpoint != b)
+ {
+ struct watchpoint *w = (struct watchpoint *) b->related_breakpoint;
+
+ w->watchpoint_triggered = watch_triggered_yes;
+ }
}
}
for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
{
- if (breakpoint_address_match (loc->pspace->aspace, loc->address,
- aspace, bp_addr))
+ if (breakpoint_location_address_match (loc, aspace, bp_addr))
{
bs = bpstat_alloc (loc, &bs_link);
/* For hits of moribund locations, we should just proceed. */
if (!bs->stop)
continue;
- bpstat_check_watchpoint (bs);
- if (!bs->stop)
- continue;
-
b = bs->breakpoint_at;
-
- if (b->type == bp_thread_event || b->type == bp_overlay_event
- || b->type == bp_longjmp_master
- || b->type == bp_std_terminate_master
- || b->type == bp_exception_master)
- /* We do not stop for these. */
- bs->stop = 0;
- else
- bpstat_check_breakpoint_conditions (bs, ptid);
+ b->ops->check_status (bs);
+ if (bs->stop)
+ {
+ bpstat_check_breakpoint_conditions (bs, ptid);
if (bs->stop)
{
++(b->hit_count);
+ observer_notify_breakpoint_modified (b);
- /* We will stop here */
+ /* We will stop here. */
if (b->disposition == disp_disable)
{
if (b->enable_state != bp_permanent)
bs->print = 0;
bs->commands = b->commands;
incref_counted_command_line (bs->commands);
- bs->commands_left = bs->commands ? bs->commands->commands : NULL;
- if (bs->commands_left
- && (strcmp ("silent", bs->commands_left->line) == 0
- || (xdb_commands
- && strcmp ("Q",
- bs->commands_left->line) == 0)))
- {
- bs->commands_left = bs->commands_left->next;
- bs->print = 0;
- }
+ if (command_line_is_silent (bs->commands
+ ? bs->commands->commands : NULL))
+ bs->print = 0;
}
- /* Print nothing for this entry if we dont stop or dont print. */
+ /* Print nothing for this entry if we don't stop or don't print. */
if (bs->stop == 0 || bs->print == 0)
bs->print_it = print_it_noop;
+ }
}
/* If we aren't stopping, the value of some hardware watchpoint may
&& bs->breakpoint_at
&& is_hardware_watchpoint (bs->breakpoint_at))
{
- update_watchpoint (bs->breakpoint_at, 0 /* don't reparse. */);
+ struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at;
+
+ update_watchpoint (w, 0 /* don't reparse. */);
need_remove_insert = 1;
}
/* Decide what infrun needs to do with this bpstat. */
struct bpstat_what
-bpstat_what (bpstat bs)
+bpstat_what (bpstat bs_head)
{
struct bpstat_what retval;
/* We need to defer calling `solib_add', as adding new symbols
and hence may clear unprocessed entries in the BS chain. */
int shlib_event = 0;
int jit_event = 0;
+ bpstat bs;
retval.main_action = BPSTAT_WHAT_KEEP_CHECKING;
retval.call_dummy = STOP_NONE;
retval.is_longjmp = 0;
- for (; bs != NULL; bs = bs->next)
+ for (bs = bs_head; bs != NULL; bs = bs->next)
{
/* Extract this BS's action. After processing each BS, we check
if its action overrides all we've seem so far. */
breakpoint which has since been deleted. */
bptype = bp_none;
}
- else if (bs->breakpoint_at == NULL)
- bptype = bp_none;
else
bptype = bs->breakpoint_at->type;
this_action = BPSTAT_WHAT_SINGLE;
}
break;
+ case bp_hp_step_resume:
+ if (bs->stop)
+ this_action = BPSTAT_WHAT_HP_STEP_RESUME;
+ else
+ {
+ /* It is for the wrong frame. */
+ this_action = BPSTAT_WHAT_SINGLE;
+ }
+ break;
case bp_watchpoint_scope:
case bp_thread_event:
case bp_overlay_event:
out already. */
internal_error (__FILE__, __LINE__,
_("bpstat_what: tracepoint encountered"));
+ break;
+ case bp_gnu_ifunc_resolver:
+ /* Step over it (and insert bp_gnu_ifunc_resolver_return). */
+ this_action = BPSTAT_WHAT_SINGLE;
+ break;
+ case bp_gnu_ifunc_resolver_return:
+ /* The breakpoint will be removed, execution will restart from the
+ PC of the former breakpoint. */
+ this_action = BPSTAT_WHAT_KEEP_CHECKING;
+ break;
default:
internal_error (__FILE__, __LINE__,
_("bpstat_what: unhandled bptype %d"), (int) bptype);
retval.main_action = max (retval.main_action, this_action);
}
+ /* These operations may affect the bs->breakpoint_at state so they are
+ delayed after MAIN_ACTION is decided above. */
+
if (shlib_event)
{
if (debug_infrun)
handle_jit_event ();
}
+ for (bs = bs_head; bs != NULL; bs = bs->next)
+ {
+ struct breakpoint *b = bs->breakpoint_at;
+
+ if (b == NULL)
+ continue;
+ switch (b->type)
+ {
+ case bp_gnu_ifunc_resolver:
+ gnu_ifunc_resolver_stop (b);
+ break;
+ case bp_gnu_ifunc_resolver_return:
+ gnu_ifunc_resolver_return_stop (b);
+ break;
+ }
+ }
+
return retval;
}
\f
+/* Compute a string of spaces suitable to indent the next line
+ so it starts at the position corresponding to the table column
+ named COL_NAME in the currently active table of UIOUT. */
+
+static char *
+wrap_indent_at_field (struct ui_out *uiout, const char *col_name)
+{
+ static char wrap_indent[80];
+ int i, total_width, width, align;
+ char *text;
+
+ total_width = 0;
+ for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++)
+ {
+ if (strcmp (text, col_name) == 0)
+ {
+ gdb_assert (total_width < sizeof wrap_indent);
+ memset (wrap_indent, ' ', total_width);
+ wrap_indent[total_width] = 0;
+
+ return wrap_indent;
+ }
+
+ total_width += width + 1;
+ }
+
+ return NULL;
+}
+
/* Print the LOC location out of the list of B->LOC locations. */
-static void print_breakpoint_location (struct breakpoint *b,
- struct bp_location *loc,
- char *wrap_indent,
- struct ui_stream *stb)
+static void
+print_breakpoint_location (struct breakpoint *b,
+ struct bp_location *loc)
{
+ struct ui_out *uiout = current_uiout;
struct cleanup *old_chain = save_current_program_space ();
if (loc != NULL && loc->shlib_disabled)
if (loc != NULL)
set_current_program_space (loc->pspace);
- if (b->source_file && loc)
+ if (b->display_canonical)
+ ui_out_field_string (uiout, "what", b->addr_string);
+ else if (b->source_file && loc)
{
struct symbol *sym
= find_pc_sect_function (loc->address, loc->section);
ui_out_text (uiout, "in ");
ui_out_field_string (uiout, "func",
SYMBOL_PRINT_NAME (sym));
- ui_out_wrap_hint (uiout, wrap_indent);
- ui_out_text (uiout, " at ");
+ ui_out_text (uiout, " ");
+ ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what"));
+ ui_out_text (uiout, "at ");
}
ui_out_field_string (uiout, "file", b->source_file);
ui_out_text (uiout, ":");
}
else if (loc)
{
+ struct ui_stream *stb = ui_out_stream_new (uiout);
+ struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb);
+
print_address_symbolic (loc->gdbarch, loc->address, stb->stream,
demangle, "");
ui_out_field_stream (uiout, "at", stb);
+
+ do_cleanups (stb_chain);
}
else
ui_out_field_string (uiout, "pending", b->addr_string);
{bp_exception, "exception"},
{bp_exception_resume, "exception resume"},
{bp_step_resume, "step resume"},
+ {bp_hp_step_resume, "high-priority step resume"},
{bp_watchpoint_scope, "watchpoint scope"},
{bp_call_dummy, "call dummy"},
{bp_std_terminate, "std::terminate"},
{bp_fast_tracepoint, "fast tracepoint"},
{bp_static_tracepoint, "static tracepoint"},
{bp_jit_event, "jit events"},
+ {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"},
+ {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"},
};
if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0])))
struct bp_location *loc,
int loc_number,
struct bp_location **last_loc,
- int print_address_bits,
int allflag)
{
struct command_line *l;
static char bpenables[] = "nynny";
- char wrap_indent[80];
- struct ui_stream *stb = ui_out_stream_new (uiout);
- struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb);
- struct cleanup *bkpt_chain;
+ struct ui_out *uiout = current_uiout;
int header_of_multiple = 0;
int part_of_multiple = (loc != NULL);
struct value_print_options opts;
get_user_print_options (&opts);
gdb_assert (!loc || loc_number != 0);
- /* See comment in print_one_breakpoint concerning
- treatment of breakpoints with single disabled
- location. */
+ /* See comment in print_one_breakpoint concerning treatment of
+ breakpoints with single disabled location. */
if (loc == NULL
&& (b->loc != NULL
&& (b->loc->next != NULL || !b->loc->enabled)))
loc = b->loc;
annotate_record ();
- bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt");
/* 1 */
annotate_field (0);
if (part_of_multiple)
ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n");
else
- ui_out_field_fmt (uiout, "enabled", "%c",
- bpenables[(int) b->enable_state]);
+ ui_out_field_fmt (uiout, "enabled", "%c",
+ bpenables[(int) b->enable_state]);
ui_out_spaces (uiout, 2);
/* 5 and 6 */
- strcpy (wrap_indent, " ");
- if (opts.addressprint)
- {
- if (print_address_bits <= 32)
- strcat (wrap_indent, " ");
- else
- strcat (wrap_indent, " ");
- }
-
if (b->ops != NULL && b->ops->print_one != NULL)
{
- /* Although the print_one can possibly print
- all locations, calling it here is not likely
- to get any nice result. So, make sure there's
- just one location. */
+ /* Although the print_one can possibly print all locations,
+ calling it here is not likely to get any nice result. So,
+ make sure there's just one location. */
gdb_assert (b->loc == NULL || b->loc->next == NULL);
b->ops->print_one (b, last_loc);
}
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). */
- if (opts.addressprint)
- ui_out_field_skip (uiout, "addr");
- annotate_field (5);
- ui_out_field_string (uiout, "what", b->exp_string);
+ {
+ struct watchpoint *w = (struct watchpoint *) b;
+
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+ if (opts.addressprint)
+ ui_out_field_skip (uiout, "addr");
+ annotate_field (5);
+ ui_out_field_string (uiout, "what", w->exp_string);
+ }
break;
case bp_breakpoint:
case bp_exception:
case bp_exception_resume:
case bp_step_resume:
+ case bp_hp_step_resume:
case bp_watchpoint_scope:
case bp_call_dummy:
case bp_std_terminate:
case bp_fast_tracepoint:
case bp_static_tracepoint:
case bp_jit_event:
+ case bp_gnu_ifunc_resolver:
+ case bp_gnu_ifunc_resolver_return:
if (opts.addressprint)
{
annotate_field (4);
}
annotate_field (5);
if (!header_of_multiple)
- print_breakpoint_location (b, loc, wrap_indent, stb);
+ print_breakpoint_location (b, loc);
if (b->loc)
*last_loc = b->loc;
break;
|| (!gdbarch_has_global_breakpoints (target_gdbarch)
&& (number_of_program_spaces () > 1
|| number_of_inferiors () > 1)
- /* LOC is for existing B, it cannot be in moribund_locations and
- thus having NULL OWNER. */
+ /* LOC is for existing B, it cannot be in
+ moribund_locations and thus having NULL OWNER. */
&& loc->owner->type != bp_catchpoint)))
{
struct inferior *inf;
if (b->thread != -1)
{
/* FIXME: This seems to be redundant and lost here; see the
- "stop only in" line a little further down. */
+ "stop only in" line a little further down. */
ui_out_text (uiout, " thread ");
ui_out_field_int (uiout, "thread", b->thread);
}
ui_out_field_int (uiout, "task", b->task);
}
}
-
+
ui_out_text (uiout, "\n");
-
- if (!part_of_multiple && b->static_trace_marker_id)
- {
- gdb_assert (b->type == bp_static_tracepoint);
- ui_out_text (uiout, "\tmarker id is ");
- ui_out_field_string (uiout, "static-tracepoint-marker-string-id",
- b->static_trace_marker_id);
- ui_out_text (uiout, "\n");
- }
+ if (!part_of_multiple)
+ b->ops->print_one_detail (b, uiout);
if (part_of_multiple && frame_id_p (b->frame_id))
{
annotate_field (6);
ui_out_text (uiout, "\tstop only in stack frame at ");
- /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside
+ /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside
the frame ID. */
ui_out_field_core_addr (uiout, "frame",
b->gdbarch, b->frame_id.stack_addr);
ui_out_text (uiout, "\n");
}
- if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b))
+ if (!part_of_multiple && b->cond_string)
{
- /* We do not print the condition for Ada exception catchpoints
- because the condition is an internal implementation detail
- that we do not want to expose to the user. */
annotate_field (7);
if (is_tracepoint (b))
ui_out_text (uiout, "\ttrace only if ");
if (!part_of_multiple && b->thread != -1)
{
- /* FIXME should make an annotation for this */
+ /* FIXME should make an annotation for this. */
ui_out_text (uiout, "\tstop only in thread ");
ui_out_field_int (uiout, "thread", b->thread);
ui_out_text (uiout, "\n");
if (!part_of_multiple && b->hit_count)
{
- /* FIXME should make an annotation for this */
+ /* FIXME should make an annotation for this. */
if (ep_is_catchpoint (b))
ui_out_text (uiout, "\tcatchpoint");
else
ui_out_text (uiout, " times\n");
}
- /* Output the count also if it is zero, but only if this is
- mi. FIXME: Should have a better test for this. */
+ /* Output the count also if it is zero, but only if this is mi.
+ FIXME: Should have a better test for this. */
if (ui_out_is_mi_like_p (uiout))
if (!part_of_multiple && b->hit_count == 0)
ui_out_field_int (uiout, "times", b->hit_count);
do_cleanups (script_chain);
}
- if (!part_of_multiple && b->pass_count)
+ if (is_tracepoint (b))
{
- annotate_field (10);
- ui_out_text (uiout, "\tpass count ");
- ui_out_field_int (uiout, "pass", b->pass_count);
- ui_out_text (uiout, " \n");
+ struct tracepoint *t = (struct tracepoint *) b;
+
+ if (!part_of_multiple && t->pass_count)
+ {
+ annotate_field (10);
+ ui_out_text (uiout, "\tpass count ");
+ ui_out_field_int (uiout, "pass", t->pass_count);
+ ui_out_text (uiout, " \n");
+ }
}
if (ui_out_is_mi_like_p (uiout) && !part_of_multiple)
{
- if (b->addr_string)
+ if (is_watchpoint (b))
+ {
+ struct watchpoint *w = (struct watchpoint *) b;
+
+ ui_out_field_string (uiout, "original-location", w->exp_string);
+ }
+ else if (b->addr_string)
ui_out_field_string (uiout, "original-location", b->addr_string);
- else if (b->exp_string)
- ui_out_field_string (uiout, "original-location", b->exp_string);
}
-
- do_cleanups (bkpt_chain);
- do_cleanups (old_chain);
}
static void
print_one_breakpoint (struct breakpoint *b,
- struct bp_location **last_loc, int print_address_bits,
+ struct bp_location **last_loc,
int allflag)
{
- print_one_breakpoint_location (b, NULL, 0, last_loc,
- print_address_bits, allflag);
+ struct cleanup *bkpt_chain;
+ struct ui_out *uiout = current_uiout;
+
+ bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt");
+
+ print_one_breakpoint_location (b, NULL, 0, last_loc, allflag);
+ do_cleanups (bkpt_chain);
/* If this breakpoint has custom print function,
it's already printed. Otherwise, print individual
locations, if any. */
if (b->ops == NULL || b->ops->print_one == NULL)
{
- /* If breakpoint has a single location that is
- disabled, we print it as if it had
- several locations, since otherwise it's hard to
- represent "breakpoint enabled, location disabled"
- situation.
- Note that while hardware watchpoints have
- several locations internally, that's no a property
- exposed to user. */
+ /* If breakpoint has a single location that is disabled, we
+ print it as if it had several locations, since otherwise it's
+ hard to represent "breakpoint enabled, location disabled"
+ situation.
+
+ Note that while hardware watchpoints have several locations
+ internally, that's not a property exposed to user. */
if (b->loc
&& !is_hardware_watchpoint (b)
- && (b->loc->next || !b->loc->enabled)
- && !ui_out_is_mi_like_p (uiout))
+ && (b->loc->next || !b->loc->enabled))
{
struct bp_location *loc;
int n = 1;
+
for (loc = b->loc; loc; loc = loc->next, ++n)
- print_one_breakpoint_location (b, loc, n, last_loc,
- print_address_bits, allflag);
+ {
+ struct cleanup *inner2 =
+ make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
+ print_one_breakpoint_location (b, loc, n, last_loc, allflag);
+ do_cleanups (inner2);
+ }
}
}
}
{
if (args->bnum == b->number)
{
- int print_address_bits = breakpoint_address_bits (b);
-
- print_one_breakpoint (b, &dummy_loc, print_address_bits, 0);
+ print_one_breakpoint (b, &dummy_loc, 0);
return GDB_RC_OK;
}
}
}
enum gdb_rc
-gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message)
+gdb_breakpoint_query (struct ui_out *uiout, int bnum,
+ char **error_message)
{
struct captured_breakpoint_query_args args;
args.bnum = bnum;
/* For the moment we don't trust print_one_breakpoint() to not throw
- an error. */
+ an error. */
if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args,
error_message, RETURN_MASK_ALL) < 0)
return GDB_RC_FAIL;
return GDB_RC_OK;
}
-/* Return non-zero if B is user settable (breakpoints, watchpoints,
- catchpoints, et.al.). */
+/* Return true if this breakpoint was set by the user, false if it is
+ internal or momentary. */
-static int
-user_settable_breakpoint (const struct breakpoint *b)
+int
+user_breakpoint_p (struct breakpoint *b)
{
- return (b->type == bp_breakpoint
- || b->type == bp_catchpoint
- || b->type == bp_hardware_breakpoint
- || is_tracepoint (b)
- || is_watchpoint (b));
+ return b->number > 0;
}
-
+
/* Print information on user settable breakpoint (watchpoint, etc)
number BNUM. If BNUM is -1 print all user-settable breakpoints.
If ALLFLAG is non-zero, include non-user-settable breakpoints. If
breakpoints listed. */
static int
-breakpoint_1 (int bnum, int allflag, int (*filter) (const struct breakpoint *))
+breakpoint_1 (char *args, int allflag,
+ int (*filter) (const struct breakpoint *))
{
struct breakpoint *b;
struct bp_location *last_loc = NULL;
struct value_print_options opts;
int print_address_bits = 0;
int print_type_col_width = 14;
+ struct ui_out *uiout = current_uiout;
get_user_print_options (&opts);
- /* Compute the number of rows in the table, as well as the
- size required for address fields. */
+ /* Compute the number of rows in the table, as well as the size
+ required for address fields. */
nr_printable_breakpoints = 0;
ALL_BREAKPOINTS (b)
- if (bnum == -1
- || bnum == b->number)
- {
- /* If we have a filter, only list the breakpoints it accepts. */
- if (filter && !filter (b))
- continue;
-
- if (allflag || (user_settable_breakpoint (b)
- && b->number > 0))
- {
- int addr_bit, type_len;
+ {
+ /* If we have a filter, only list the breakpoints it accepts. */
+ if (filter && !filter (b))
+ continue;
+
+ /* If we have an "args" string, it is a list of breakpoints to
+ accept. Skip the others. */
+ if (args != NULL && *args != '\0')
+ {
+ if (allflag && parse_and_eval_long (args) != b->number)
+ continue;
+ if (!allflag && !number_is_in_list (args, b->number))
+ continue;
+ }
- addr_bit = breakpoint_address_bits (b);
- if (addr_bit > print_address_bits)
- print_address_bits = addr_bit;
+ if (allflag || user_breakpoint_p (b))
+ {
+ int addr_bit, type_len;
- type_len = strlen (bptype_string (b->type));
- if (type_len > print_type_col_width)
- print_type_col_width = type_len;
+ addr_bit = breakpoint_address_bits (b);
+ if (addr_bit > print_address_bits)
+ print_address_bits = addr_bit;
- nr_printable_breakpoints++;
- }
- }
+ type_len = strlen (bptype_string (b->type));
+ if (type_len > print_type_col_width)
+ print_type_col_width = type_len;
+
+ nr_printable_breakpoints++;
+ }
+ }
if (opts.addressprint)
bkpttbl_chain
- = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints,
+ = make_cleanup_ui_out_table_begin_end (uiout, 6,
+ nr_printable_breakpoints,
"BreakpointTable");
else
bkpttbl_chain
- = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints,
+ = make_cleanup_ui_out_table_begin_end (uiout, 5,
+ nr_printable_breakpoints,
"BreakpointTable");
if (nr_printable_breakpoints > 0)
annotate_breakpoints_headers ();
if (nr_printable_breakpoints > 0)
annotate_field (0);
- ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */
+ ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */
if (nr_printable_breakpoints > 0)
annotate_field (1);
ui_out_table_header (uiout, print_type_col_width, ui_left,
- "type", "Type"); /* 2 */
+ "type", "Type"); /* 2 */
if (nr_printable_breakpoints > 0)
annotate_field (2);
- ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */
+ ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */
if (nr_printable_breakpoints > 0)
annotate_field (3);
ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */
if (opts.addressprint)
- {
- if (nr_printable_breakpoints > 0)
- annotate_field (4);
- if (print_address_bits <= 32)
- ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */
- else
- ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */
- }
+ {
+ if (nr_printable_breakpoints > 0)
+ annotate_field (4);
+ if (print_address_bits <= 32)
+ ui_out_table_header (uiout, 10, ui_left,
+ "addr", "Address"); /* 5 */
+ else
+ ui_out_table_header (uiout, 18, ui_left,
+ "addr", "Address"); /* 5 */
+ }
if (nr_printable_breakpoints > 0)
annotate_field (5);
ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */
annotate_breakpoints_table ();
ALL_BREAKPOINTS (b)
- {
- QUIT;
- if (bnum == -1
- || bnum == b->number)
- {
- /* If we have a filter, only list the breakpoints it accepts. */
- if (filter && !filter (b))
- continue;
-
- /* We only print out user settable breakpoints unless the
- allflag is set. */
- if (allflag || (user_settable_breakpoint (b)
- && b->number > 0))
- print_one_breakpoint (b, &last_loc, print_address_bits, allflag);
- }
- }
-
+ {
+ QUIT;
+ /* If we have a filter, only list the breakpoints it accepts. */
+ if (filter && !filter (b))
+ continue;
+
+ /* If we have an "args" string, it is a list of breakpoints to
+ accept. Skip the others. */
+
+ if (args != NULL && *args != '\0')
+ {
+ if (allflag) /* maintenance info breakpoint */
+ {
+ if (parse_and_eval_long (args) != b->number)
+ continue;
+ }
+ else /* all others */
+ {
+ if (!number_is_in_list (args, b->number))
+ continue;
+ }
+ }
+ /* We only print out user settable breakpoints unless the
+ allflag is set. */
+ if (allflag || user_breakpoint_p (b))
+ print_one_breakpoint (b, &last_loc, allflag);
+ }
+
do_cleanups (bkpttbl_chain);
if (nr_printable_breakpoints == 0)
{
- /* If there's a filter, let the caller decide how to report empty list. */
+ /* If there's a filter, let the caller decide how to report
+ empty list. */
if (!filter)
{
- if (bnum == -1)
+ if (args == NULL || *args == '\0')
ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n");
else
- ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n",
- bnum);
+ ui_out_message (uiout, 0,
+ "No breakpoint or watchpoint matching '%s'.\n",
+ args);
}
}
else
set_next_address (last_loc->gdbarch, last_loc->address);
}
- /* FIXME? Should this be moved up so that it is only called when
+ /* FIXME? Should this be moved up so that it is only called when
there have been breakpoints? */
annotate_breakpoints_table_end ();
static void
default_collect_info (void)
{
+ struct ui_out *uiout = current_uiout;
+
/* If it has no value (which is frequently the case), say nothing; a
message like "No default-collect." gets in user's face when it's
not wanted. */
}
static void
-breakpoints_info (char *bnum_exp, int from_tty)
+breakpoints_info (char *args, int from_tty)
{
- int bnum = -1;
-
- if (bnum_exp)
- bnum = parse_and_eval_long (bnum_exp);
-
- breakpoint_1 (bnum, 0, NULL);
+ breakpoint_1 (args, 0, NULL);
default_collect_info ();
}
static void
-watchpoints_info (char *wpnum_exp, int from_tty)
+watchpoints_info (char *args, int from_tty)
{
- int wpnum = -1, num_printed;
-
- if (wpnum_exp)
- wpnum = parse_and_eval_long (wpnum_exp);
-
- num_printed = breakpoint_1 (wpnum, 0, is_watchpoint);
+ int num_printed = breakpoint_1 (args, 0, is_watchpoint);
+ struct ui_out *uiout = current_uiout;
if (num_printed == 0)
{
- if (wpnum == -1)
+ if (args == NULL || *args == '\0')
ui_out_message (uiout, 0, "No watchpoints.\n");
else
- ui_out_message (uiout, 0, "No watchpoint number %d.\n", wpnum);
+ ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args);
}
}
static void
-maintenance_info_breakpoints (char *bnum_exp, int from_tty)
+maintenance_info_breakpoints (char *args, int from_tty)
{
- int bnum = -1;
-
- if (bnum_exp)
- bnum = parse_and_eval_long (bnum_exp);
-
- breakpoint_1 (bnum, 1, NULL);
+ breakpoint_1 (args, 1, NULL);
default_collect_info ();
}
return 0;
}
-/* Print a message describing any breakpoints set at PC. This
+/* Print a message describing any user-breakpoints set at PC. This
concerns with logical breakpoints, so we match program spaces, not
address spaces. */
struct breakpoint *b;
ALL_BREAKPOINTS (b)
- others += breakpoint_has_pc (b, pspace, pc, section);
+ others += (user_breakpoint_p (b)
+ && breakpoint_has_pc (b, pspace, pc, section));
if (others > 0)
{
if (others == 1)
else /* if (others == ???) */
printf_filtered (_("Note: breakpoints "));
ALL_BREAKPOINTS (b)
- if (breakpoint_has_pc (b, pspace, pc, section))
+ if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section))
{
others--;
printf_filtered ("%d", b->number);
and it makes no sense to attempt to compare it to other addresses
(or use it for any other purpose either).
- More specifically, each of the following breakpoint types will always
- have a zero valued address and we don't want to mark breakpoints of any of
- these types to be a duplicate of an actual breakpoint at address zero:
+ More specifically, each of the following breakpoint types will
+ always have a zero valued address and we don't want to mark
+ breakpoints of any of these types to be a duplicate of an actual
+ breakpoint at address zero:
bp_watchpoint
bp_catchpoint
true if LOC1 and LOC2 represent the same watchpoint location. */
static int
-watchpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2)
-{
- /* Both of them must not be in moribund_locations. */
- gdb_assert (loc1->owner != NULL);
- gdb_assert (loc2->owner != NULL);
-
- /* If the target can evaluate the condition expression in hardware, then we
- we need to insert both watchpoints even if they are at the same place.
- Otherwise the watchpoint will only trigger when the condition of whichever
- watchpoint was inserted evaluates to true, not giving a chance for GDB to
- check the condition of the other watchpoint. */
- if ((loc1->owner->cond_exp
- && target_can_accel_watchpoint_condition (loc1->address, loc1->length,
+watchpoint_locations_match (struct bp_location *loc1,
+ struct bp_location *loc2)
+{
+ struct watchpoint *w1 = (struct watchpoint *) loc1->owner;
+ struct watchpoint *w2 = (struct watchpoint *) loc2->owner;
+
+ /* Both of them must exist. */
+ gdb_assert (w1 != NULL);
+ gdb_assert (w2 != NULL);
+
+ /* If the target can evaluate the condition expression in hardware,
+ then we we need to insert both watchpoints even if they are at
+ the same place. Otherwise the watchpoint will only trigger when
+ the condition of whichever watchpoint was inserted evaluates to
+ true, not giving a chance for GDB to check the condition of the
+ other watchpoint. */
+ if ((w1->cond_exp
+ && target_can_accel_watchpoint_condition (loc1->address,
+ loc1->length,
loc1->watchpoint_type,
- loc1->owner->cond_exp))
- || (loc2->owner->cond_exp
- && target_can_accel_watchpoint_condition (loc2->address, loc2->length,
+ w1->cond_exp))
+ || (w2->cond_exp
+ && target_can_accel_watchpoint_condition (loc2->address,
+ loc2->length,
loc2->watchpoint_type,
- loc2->owner->cond_exp)))
+ w2->cond_exp)))
return 0;
/* Note that this checks the owner's type, not the location's. In
&& addr1 == addr2);
}
+/* Returns true if {ASPACE2,ADDR2} falls within the range determined by
+ {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1
+ matches ASPACE2. On targets that have global breakpoints, the address
+ space doesn't really matter. */
+
+static int
+breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1,
+ int len1, struct address_space *aspace2,
+ CORE_ADDR addr2)
+{
+ return ((gdbarch_has_global_breakpoints (target_gdbarch)
+ || aspace1 == aspace2)
+ && addr2 >= addr1 && addr2 < addr1 + len1);
+}
+
+/* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be
+ a ranged breakpoint. In most targets, a match happens only if ASPACE
+ matches the breakpoint's address space. On targets that have global
+ breakpoints, the address space doesn't really matter. */
+
+static int
+breakpoint_location_address_match (struct bp_location *bl,
+ struct address_space *aspace,
+ CORE_ADDR addr)
+{
+ return (breakpoint_address_match (bl->pspace->aspace, bl->address,
+ aspace, addr)
+ || (bl->length
+ && breakpoint_address_match_range (bl->pspace->aspace,
+ bl->address, bl->length,
+ aspace, addr)));
+}
+
/* Assuming LOC1 and LOC2's types' have meaningful target addresses
(breakpoint_address_is_meaningful), returns true if LOC1 and LOC2
represent the same location. */
static int
-breakpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2)
+breakpoint_locations_match (struct bp_location *loc1,
+ struct bp_location *loc2)
{
int hw_point1, hw_point2;
else if (hw_point1)
return watchpoint_locations_match (loc1, loc2);
else
- return breakpoint_address_match (loc1->pspace->aspace, loc1->address,
- loc2->pspace->aspace, loc2->address);
+ /* We compare bp_location.length in order to cover ranged breakpoints. */
+ return (breakpoint_address_match (loc1->pspace->aspace, loc1->address,
+ loc2->pspace->aspace, loc2->address)
+ && loc1->length == loc2->length);
}
static void
breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr,
int bnum, int have_bnum)
{
- char astr1[40];
- char astr2[40];
+ /* The longest string possibly returned by hex_string_custom
+ is 50 chars. These must be at least that big for safety. */
+ char astr1[64];
+ char astr2[64];
strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8));
strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8));
warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2);
}
-/* Adjust a breakpoint's address to account for architectural constraints
- on breakpoint placement. Return the adjusted address. Note: Very
- few targets require this kind of adjustment. For most targets,
- this function is simply the identity function. */
+/* Adjust a breakpoint's address to account for architectural
+ constraints on breakpoint placement. Return the adjusted address.
+ Note: Very few targets require this kind of adjustment. For most
+ targets, this function is simply the identity function. */
static CORE_ADDR
adjust_breakpoint_address (struct gdbarch *gdbarch,
}
}
-/* Allocate a struct bp_location. */
-
-static struct bp_location *
-allocate_bp_location (struct breakpoint *bpt)
+void
+init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops,
+ struct breakpoint *owner)
{
- struct bp_location *loc;
-
- loc = xmalloc (sizeof (struct bp_location));
memset (loc, 0, sizeof (*loc));
- loc->owner = bpt;
+ gdb_assert (ops != NULL);
+
+ loc->ops = ops;
+ loc->owner = owner;
loc->cond = NULL;
loc->shlib_disabled = 0;
loc->enabled = 1;
- switch (bpt->type)
+ switch (owner->type)
{
case bp_breakpoint:
case bp_until:
case bp_exception:
case bp_exception_resume:
case bp_step_resume:
+ case bp_hp_step_resume:
case bp_watchpoint_scope:
case bp_call_dummy:
case bp_std_terminate:
case bp_longjmp_master:
case bp_std_terminate_master:
case bp_exception_master:
+ case bp_gnu_ifunc_resolver:
+ case bp_gnu_ifunc_resolver_return:
loc->loc_type = bp_loc_software_breakpoint;
break;
case bp_hardware_breakpoint:
}
loc->refc = 1;
- return loc;
+}
+
+/* Allocate a struct bp_location. */
+
+static struct bp_location *
+allocate_bp_location (struct breakpoint *bpt)
+{
+ return bpt->ops->allocate_location (bpt);
}
static void
free_bp_location (struct bp_location *loc)
{
- if (loc->cond)
- xfree (loc->cond);
-
- if (loc->function_name)
- xfree (loc->function_name);
-
+ loc->ops->dtor (loc);
xfree (loc);
}
*blp = NULL;
}
-/* Helper to set_raw_breakpoint below. Creates a breakpoint
- that has type BPTYPE and has no locations as yet. */
-/* This function is used in gdbtk sources and thus can not be made static. */
+/* Add breakpoint B at the end of the global breakpoint chain. */
-static struct breakpoint *
-set_raw_breakpoint_without_location (struct gdbarch *gdbarch,
- enum bptype bptype)
+static void
+add_to_breakpoint_chain (struct breakpoint *b)
{
- struct breakpoint *b, *b1;
+ struct breakpoint *b1;
+
+ /* Add this breakpoint to the end of the chain so that a list of
+ breakpoints will come out in order of increasing numbers. */
+
+ b1 = breakpoint_chain;
+ if (b1 == 0)
+ breakpoint_chain = b;
+ else
+ {
+ while (b1->next)
+ b1 = b1->next;
+ b1->next = b;
+ }
+}
- b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint));
+/* Initializes breakpoint B with type BPTYPE and no locations yet. */
+
+static void
+init_raw_breakpoint_without_location (struct breakpoint *b,
+ struct gdbarch *gdbarch,
+ enum bptype bptype,
+ const struct breakpoint_ops *ops)
+{
memset (b, 0, sizeof (*b));
+ gdb_assert (ops != NULL);
+
+ b->ops = ops;
b->type = bptype;
b->gdbarch = gdbarch;
b->language = current_language->la_language;
b->ignore_count = 0;
b->commands = NULL;
b->frame_id = null_frame_id;
- b->forked_inferior_pid = null_ptid;
- b->exec_pathname = NULL;
- b->syscalls_to_be_caught = NULL;
- b->ops = NULL;
b->condition_not_parsed = 0;
b->py_bp_object = NULL;
+ b->related_breakpoint = b;
+}
- /* Add this breakpoint to the end of the chain
- so that a list of breakpoints will come out in order
- of increasing numbers. */
+/* Helper to set_raw_breakpoint below. Creates a breakpoint
+ that has type BPTYPE and has no locations as yet. */
- b1 = breakpoint_chain;
- if (b1 == 0)
- breakpoint_chain = b;
- else
- {
- while (b1->next)
- b1 = b1->next;
- b1->next = b;
- }
+static struct breakpoint *
+set_raw_breakpoint_without_location (struct gdbarch *gdbarch,
+ enum bptype bptype,
+ const struct breakpoint_ops *ops)
+{
+ struct breakpoint *b = XNEW (struct breakpoint);
+
+ init_raw_breakpoint_without_location (b, gdbarch, bptype, ops);
+ add_to_breakpoint_chain (b);
return b;
}
-/* Initialize loc->function_name. */
+/* Initialize loc->function_name. EXPLICIT_LOC says no indirect function
+ resolutions should be made as the user specified the location explicitly
+ enough. */
+
static void
-set_breakpoint_location_function (struct bp_location *loc)
+set_breakpoint_location_function (struct bp_location *loc, int explicit_loc)
{
gdb_assert (loc->owner != NULL);
|| loc->owner->type == bp_hardware_breakpoint
|| is_tracepoint (loc->owner))
{
- find_pc_partial_function (loc->address, &(loc->function_name),
- NULL, NULL);
+ int is_gnu_ifunc;
+
+ find_pc_partial_function_gnu_ifunc (loc->address, &loc->function_name,
+ NULL, NULL, &is_gnu_ifunc);
+
+ if (is_gnu_ifunc && !explicit_loc)
+ {
+ struct breakpoint *b = loc->owner;
+
+ gdb_assert (loc->pspace == current_program_space);
+ if (gnu_ifunc_resolve_name (loc->function_name,
+ &loc->requested_address))
+ {
+ /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */
+ loc->address = adjust_breakpoint_address (loc->gdbarch,
+ loc->requested_address,
+ b->type);
+ }
+ else if (b->type == bp_breakpoint && b->loc == loc
+ && loc->next == NULL && b->related_breakpoint == b)
+ {
+ /* Create only the whole new breakpoint of this type but do not
+ mess more complicated breakpoints with multiple locations. */
+ b->type = bp_gnu_ifunc_resolver;
+ }
+ }
+
if (loc->function_name)
loc->function_name = xstrdup (loc->function_name);
}
return NULL;
}
-/* set_raw_breakpoint is a low level routine for allocating and
- partially initializing a breakpoint of type BPTYPE. The newly
- created breakpoint's address, section, source file name, and line
- number are provided by SAL. The newly created and partially
- initialized breakpoint is added to the breakpoint chain and
- is also returned as the value of this function.
+/* Low level routine for partially initializing a breakpoint of type
+ BPTYPE. The newly created breakpoint's address, section, source
+ file name, and line number are provided by SAL.
It is expected that the caller will complete the initialization of
the newly created breakpoint struct as well as output any status
- information regarding the creation of a new breakpoint. In
- particular, set_raw_breakpoint does NOT set the breakpoint
- number! Care should be taken to not allow an error to occur
- prior to completing the initialization of the breakpoint. If this
- should happen, a bogus breakpoint will be left on the chain. */
+ information regarding the creation of a new breakpoint. */
-struct breakpoint *
-set_raw_breakpoint (struct gdbarch *gdbarch,
- struct symtab_and_line sal, enum bptype bptype)
+static void
+init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch,
+ struct symtab_and_line sal, enum bptype bptype,
+ const struct breakpoint_ops *ops)
{
- struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype);
CORE_ADDR adjusted_address;
struct gdbarch *loc_gdbarch;
+ init_raw_breakpoint_without_location (b, gdbarch, bptype, ops);
+
loc_gdbarch = get_sal_arch (sal);
if (!loc_gdbarch)
loc_gdbarch = b->gdbarch;
breakpoint may cause target_read_memory() to be called and we do
not want its scan of the location chain to find a breakpoint and
location that's only been partially initialized. */
- adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type);
+ adjusted_address = adjust_breakpoint_address (loc_gdbarch,
+ sal.pc, b->type);
b->loc = allocate_bp_location (b);
b->loc->gdbarch = loc_gdbarch;
b->loc->section = sal.section;
b->line_number = sal.line;
- set_breakpoint_location_function (b->loc);
+ set_breakpoint_location_function (b->loc,
+ sal.explicit_pc || sal.explicit_line);
breakpoints_changed ();
+}
+
+/* set_raw_breakpoint is a low level routine for allocating and
+ partially initializing a breakpoint of type BPTYPE. The newly
+ created breakpoint's address, section, source file name, and line
+ number are provided by SAL. The newly created and partially
+ initialized breakpoint is added to the breakpoint chain and
+ is also returned as the value of this function.
+
+ It is expected that the caller will complete the initialization of
+ the newly created breakpoint struct as well as output any status
+ information regarding the creation of a new breakpoint. In
+ particular, set_raw_breakpoint does NOT set the breakpoint
+ number! Care should be taken to not allow an error to occur
+ prior to completing the initialization of the breakpoint. If this
+ should happen, a bogus breakpoint will be left on the chain. */
+
+struct breakpoint *
+set_raw_breakpoint (struct gdbarch *gdbarch,
+ struct symtab_and_line sal, enum bptype bptype,
+ const struct breakpoint_ops *ops)
+{
+ struct breakpoint *b = XNEW (struct breakpoint);
+ init_raw_breakpoint (b, gdbarch, sal, bptype, ops);
+ add_to_breakpoint_chain (b);
return b;
}
b->enable_state = bp_permanent;
- /* By definition, permanent breakpoints are already present in the code.
- Mark all locations as inserted. For now, make_breakpoint_permanent
- is called in just one place, so it's hard to say if it's reasonable
- to have permanent breakpoint with multiple locations or not,
- but it's easy to implmement. */
+ /* By definition, permanent breakpoints are already present in the
+ code. Mark all locations as inserted. For now,
+ make_breakpoint_permanent is called in just one place, so it's
+ hard to say if it's reasonable to have permanent breakpoint with
+ multiple locations or not, but it's easy to implement. */
for (bl = b->loc; bl; bl = bl->next)
bl->inserted = 1;
}
void
set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
int thread = tp->num;
/* To avoid having to rescan all objfile symbols at every step,
we maintain a list of continually-inserted but always disabled
longjmp "master" breakpoints. Here, we simply create momentary
clones of those and enable them for the requested thread. */
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
if (b->pspace == current_program_space
&& (b->type == bp_longjmp_master
|| b->type == bp_exception_master))
{
- struct breakpoint *clone = clone_momentary_breakpoint (b);
+ enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception;
+ struct breakpoint *clone;
- clone->type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception;
+ clone = momentary_breakpoint_from_master (b, type,
+ &momentary_breakpoint_ops);
clone->thread = thread;
}
void
delete_longjmp_breakpoint (int thread)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
if (b->type == bp_longjmp || b->type == bp_exception)
{
if (b->thread == thread)
void
set_std_terminate_breakpoint (void)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
if (b->pspace == current_program_space
&& b->type == bp_std_terminate_master)
{
- struct breakpoint *clone = clone_momentary_breakpoint (b);
- clone->type = bp_std_terminate;
+ momentary_breakpoint_from_master (b, bp_std_terminate,
+ &momentary_breakpoint_ops);
}
}
void
delete_std_terminate_breakpoint (void)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
if (b->type == bp_std_terminate)
delete_breakpoint (b);
}
{
struct breakpoint *b;
- b = create_internal_breakpoint (gdbarch, address, bp_thread_event);
-
+ b = create_internal_breakpoint (gdbarch, address, bp_thread_event,
+ &internal_breakpoint_ops);
+
b->enable_state = bp_enabled;
/* addr_string has to be used or breakpoint_re_set will delete me. */
b->addr_string
void
remove_thread_event_breakpoints (void)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
if (b->type == bp_thread_event
&& b->loc->pspace == current_program_space)
delete_breakpoint (b);
}
-struct captured_parse_breakpoint_args
- {
- char **arg_p;
- struct symtabs_and_lines *sals_p;
- char ***addr_string_p;
- int *not_found_ptr;
- };
-
struct lang_and_radix
{
enum language lang;
{
struct breakpoint *b;
- b = create_internal_breakpoint (gdbarch, address, bp_jit_event);
+ b = create_internal_breakpoint (gdbarch, address, bp_jit_event,
+ &internal_breakpoint_ops);
update_global_location_list_nothrow (1);
return b;
}
+/* Remove JIT code registration and unregistration breakpoint(s). */
+
+void
+remove_jit_event_breakpoints (void)
+{
+ struct breakpoint *b, *b_tmp;
+
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
+ if (b->type == bp_jit_event
+ && b->loc->pspace == current_program_space)
+ delete_breakpoint (b);
+}
+
void
remove_solib_event_breakpoints (void)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
if (b->type == bp_shlib_event
&& b->loc->pspace == current_program_space)
delete_breakpoint (b);
{
struct breakpoint *b;
- b = create_internal_breakpoint (gdbarch, address, bp_shlib_event);
+ b = create_internal_breakpoint (gdbarch, address, bp_shlib_event,
+ &internal_breakpoint_ops);
update_global_location_list_nothrow (1);
return b;
}
/* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
struct breakpoint *b = loc->owner;
- /* We apply the check to all breakpoints, including disabled
- for those with loc->duplicate set. This is so that when breakpoint
- becomes enabled, or the duplicate is removed, gdb will try to insert
- all breakpoints. If we don't set shlib_disabled here, we'll try
- to insert those breakpoints and fail. */
+ /* We apply the check to all breakpoints, including disabled for
+ those with loc->duplicate set. This is so that when breakpoint
+ becomes enabled, or the duplicate is removed, gdb will try to
+ insert all breakpoints. If we don't set shlib_disabled here,
+ we'll try to insert those breakpoints and fail. */
if (((b->type == bp_breakpoint)
|| (b->type == bp_jit_event)
|| (b->type == bp_hardware_breakpoint)
}
}
-/* Disable any breakpoints that are in in an unloaded shared library. Only
- apply to enabled breakpoints, disabled ones can just stay disabled. */
+/* Disable any breakpoints that are in an unloaded shared library.
+ Only apply to enabled breakpoints, disabled ones can just stay
+ disabled. */
static void
disable_breakpoints_in_unloaded_shlib (struct so_list *solib)
succeeding so we must mark the breakpoint as not inserted
to prevent future errors occurring in remove_breakpoints. */
loc->inserted = 0;
+
+ /* This may cause duplicate notifications for the same breakpoint. */
+ observer_notify_breakpoint_modified (b);
+
if (!disabled_shlib_breaks)
{
target_terminal_ours_for_output ();
- warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""),
+ warning (_("Temporarily disabling breakpoints "
+ "for unloaded shared library \"%s\""),
solib->so_name);
}
disabled_shlib_breaks = 1;
/* FORK & VFORK catchpoints. */
-/* Implement the "insert" breakpoint_ops method for fork catchpoints. */
+/* An instance of this type is used to represent a fork or vfork
+ catchpoint. It includes a "struct breakpoint" as a kind of base
+ class; users downcast to "struct breakpoint *" when needed. A
+ breakpoint is really of this type iff its ops pointer points to
+ CATCH_FORK_BREAKPOINT_OPS. */
-static void
-insert_catch_fork (struct breakpoint *b)
+struct fork_catchpoint
+{
+ /* The base class. */
+ struct breakpoint base;
+
+ /* Process id of a child process whose forking triggered this
+ catchpoint. This field is only valid immediately after this
+ catchpoint has triggered. */
+ ptid_t forked_inferior_pid;
+};
+
+/* Implement the "insert" breakpoint_ops method for fork
+ catchpoints. */
+
+static int
+insert_catch_fork (struct bp_location *bl)
{
- target_insert_fork_catchpoint (PIDGET (inferior_ptid));
+ return target_insert_fork_catchpoint (PIDGET (inferior_ptid));
}
-/* Implement the "remove" breakpoint_ops method for fork catchpoints. */
+/* Implement the "remove" breakpoint_ops method for fork
+ catchpoints. */
static int
-remove_catch_fork (struct breakpoint *b)
+remove_catch_fork (struct bp_location *bl)
{
return target_remove_fork_catchpoint (PIDGET (inferior_ptid));
}
catchpoints. */
static int
-breakpoint_hit_catch_fork (struct breakpoint *b)
+breakpoint_hit_catch_fork (const struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR bp_addr)
{
- return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid);
+ struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner;
+
+ return inferior_has_forked (inferior_ptid, &c->forked_inferior_pid);
}
-/* Implement the "print_it" breakpoint_ops method for fork catchpoints. */
+/* Implement the "print_it" breakpoint_ops method for fork
+ catchpoints. */
static enum print_stop_action
-print_it_catch_fork (struct breakpoint *b)
+print_it_catch_fork (bpstat bs)
{
+ struct breakpoint *b = bs->breakpoint_at;
+ struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at;
+
annotate_catchpoint (b->number);
printf_filtered (_("\nCatchpoint %d (forked process %d), "),
- b->number, ptid_get_pid (b->forked_inferior_pid));
+ b->number, ptid_get_pid (c->forked_inferior_pid));
return PRINT_SRC_AND_LOC;
}
-/* Implement the "print_one" breakpoint_ops method for fork catchpoints. */
+/* Implement the "print_one" breakpoint_ops method for fork
+ catchpoints. */
static void
print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc)
{
+ struct fork_catchpoint *c = (struct fork_catchpoint *) b;
struct value_print_options opts;
+ struct ui_out *uiout = current_uiout;
get_user_print_options (&opts);
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
+ /* Field 4, the address, is omitted (which makes the columns not
+ line up too nicely with the headers, but the effect is relatively
+ readable). */
if (opts.addressprint)
ui_out_field_skip (uiout, "addr");
annotate_field (5);
ui_out_text (uiout, "fork");
- if (!ptid_equal (b->forked_inferior_pid, null_ptid))
+ if (!ptid_equal (c->forked_inferior_pid, null_ptid))
{
ui_out_text (uiout, ", process ");
ui_out_field_int (uiout, "what",
- ptid_get_pid (b->forked_inferior_pid));
+ ptid_get_pid (c->forked_inferior_pid));
ui_out_spaces (uiout, 1);
}
}
print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp)
{
fprintf_unfiltered (fp, "catch fork");
+ print_recreate_thread (b, fp);
}
/* The breakpoint_ops structure to be used in fork catchpoints. */
-static struct breakpoint_ops catch_fork_breakpoint_ops =
-{
- insert_catch_fork,
- remove_catch_fork,
- breakpoint_hit_catch_fork,
- print_it_catch_fork,
- print_one_catch_fork,
- print_mention_catch_fork,
- print_recreate_catch_fork
-};
+static struct breakpoint_ops catch_fork_breakpoint_ops;
-/* Implement the "insert" breakpoint_ops method for vfork catchpoints. */
+/* Implement the "insert" breakpoint_ops method for vfork
+ catchpoints. */
-static void
-insert_catch_vfork (struct breakpoint *b)
+static int
+insert_catch_vfork (struct bp_location *bl)
{
- target_insert_vfork_catchpoint (PIDGET (inferior_ptid));
+ return target_insert_vfork_catchpoint (PIDGET (inferior_ptid));
}
-/* Implement the "remove" breakpoint_ops method for vfork catchpoints. */
+/* Implement the "remove" breakpoint_ops method for vfork
+ catchpoints. */
static int
-remove_catch_vfork (struct breakpoint *b)
+remove_catch_vfork (struct bp_location *bl)
{
return target_remove_vfork_catchpoint (PIDGET (inferior_ptid));
}
catchpoints. */
static int
-breakpoint_hit_catch_vfork (struct breakpoint *b)
+breakpoint_hit_catch_vfork (const struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR bp_addr)
{
- return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid);
+ struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner;
+
+ return inferior_has_vforked (inferior_ptid, &c->forked_inferior_pid);
}
-/* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */
+/* Implement the "print_it" breakpoint_ops method for vfork
+ catchpoints. */
static enum print_stop_action
-print_it_catch_vfork (struct breakpoint *b)
+print_it_catch_vfork (bpstat bs)
{
+ struct breakpoint *b = bs->breakpoint_at;
+ struct fork_catchpoint *c = (struct fork_catchpoint *) b;
+
annotate_catchpoint (b->number);
printf_filtered (_("\nCatchpoint %d (vforked process %d), "),
- b->number, ptid_get_pid (b->forked_inferior_pid));
+ b->number, ptid_get_pid (c->forked_inferior_pid));
return PRINT_SRC_AND_LOC;
}
-/* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */
+/* Implement the "print_one" breakpoint_ops method for vfork
+ catchpoints. */
static void
print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc)
{
+ struct fork_catchpoint *c = (struct fork_catchpoint *) b;
struct value_print_options opts;
+ struct ui_out *uiout = current_uiout;
get_user_print_options (&opts);
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
+ /* Field 4, the address, is omitted (which makes the columns not
+ line up too nicely with the headers, but the effect is relatively
+ readable). */
if (opts.addressprint)
ui_out_field_skip (uiout, "addr");
annotate_field (5);
ui_out_text (uiout, "vfork");
- if (!ptid_equal (b->forked_inferior_pid, null_ptid))
+ if (!ptid_equal (c->forked_inferior_pid, null_ptid))
{
ui_out_text (uiout, ", process ");
ui_out_field_int (uiout, "what",
- ptid_get_pid (b->forked_inferior_pid));
+ ptid_get_pid (c->forked_inferior_pid));
ui_out_spaces (uiout, 1);
}
}
print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp)
{
fprintf_unfiltered (fp, "catch vfork");
+ print_recreate_thread (b, fp);
}
/* The breakpoint_ops structure to be used in vfork catchpoints. */
-static struct breakpoint_ops catch_vfork_breakpoint_ops =
+static struct breakpoint_ops catch_vfork_breakpoint_ops;
+
+/* An instance of this type is used to represent a syscall catchpoint.
+ It includes a "struct breakpoint" as a kind of base class; users
+ downcast to "struct breakpoint *" when needed. A breakpoint is
+ really of this type iff its ops pointer points to
+ CATCH_SYSCALL_BREAKPOINT_OPS. */
+
+struct syscall_catchpoint
{
- insert_catch_vfork,
- remove_catch_vfork,
- breakpoint_hit_catch_vfork,
- print_it_catch_vfork,
- print_one_catch_vfork,
- print_mention_catch_vfork,
- print_recreate_catch_vfork
+ /* The base class. */
+ struct breakpoint base;
+
+ /* Syscall numbers used for the 'catch syscall' feature. If no
+ syscall has been specified for filtering, its value is NULL.
+ Otherwise, it holds a list of all syscalls to be caught. The
+ list elements are allocated with xmalloc. */
+ VEC(int) *syscalls_to_be_caught;
};
-/* Implement the "insert" breakpoint_ops method for syscall
+/* Implement the "dtor" breakpoint_ops method for syscall
catchpoints. */
static void
-insert_catch_syscall (struct breakpoint *b)
+dtor_catch_syscall (struct breakpoint *b)
+{
+ struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
+
+ VEC_free (int, c->syscalls_to_be_caught);
+
+ base_breakpoint_ops.dtor (b);
+}
+
+/* Implement the "insert" breakpoint_ops method for syscall
+ catchpoints. */
+
+static int
+insert_catch_syscall (struct bp_location *bl)
{
+ struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner;
struct inferior *inf = current_inferior ();
++inf->total_syscalls_count;
- if (!b->syscalls_to_be_caught)
+ if (!c->syscalls_to_be_caught)
++inf->any_syscall_count;
else
{
int i, iter;
for (i = 0;
- VEC_iterate (int, b->syscalls_to_be_caught, i, iter);
+ VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
i++)
{
int elem;
if (iter >= VEC_length (int, inf->syscalls_counts))
{
int old_size = VEC_length (int, inf->syscalls_counts);
- uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int));
+ uintptr_t vec_addr_offset
+ = old_size * ((uintptr_t) sizeof (int));
uintptr_t vec_addr;
VEC_safe_grow (int, inf->syscalls_counts, iter + 1);
vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) +
}
}
- target_set_syscall_catchpoint (PIDGET (inferior_ptid),
- inf->total_syscalls_count != 0,
- inf->any_syscall_count,
- VEC_length (int, inf->syscalls_counts),
- VEC_address (int, inf->syscalls_counts));
+ return target_set_syscall_catchpoint (PIDGET (inferior_ptid),
+ inf->total_syscalls_count != 0,
+ inf->any_syscall_count,
+ VEC_length (int, inf->syscalls_counts),
+ VEC_address (int, inf->syscalls_counts));
}
/* Implement the "remove" breakpoint_ops method for syscall
catchpoints. */
static int
-remove_catch_syscall (struct breakpoint *b)
+remove_catch_syscall (struct bp_location *bl)
{
+ struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner;
struct inferior *inf = current_inferior ();
--inf->total_syscalls_count;
- if (!b->syscalls_to_be_caught)
+ if (!c->syscalls_to_be_caught)
--inf->any_syscall_count;
else
{
int i, iter;
for (i = 0;
- VEC_iterate (int, b->syscalls_to_be_caught, i, iter);
+ VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
i++)
{
int elem;
inf->total_syscalls_count != 0,
inf->any_syscall_count,
VEC_length (int, inf->syscalls_counts),
- VEC_address (int, inf->syscalls_counts));
+ VEC_address (int,
+ inf->syscalls_counts));
}
/* Implement the "breakpoint_hit" breakpoint_ops method for syscall
catchpoints. */
static int
-breakpoint_hit_catch_syscall (struct breakpoint *b)
+breakpoint_hit_catch_syscall (const struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR bp_addr)
{
- /* We must check if we are catching specific syscalls in this breakpoint.
- If we are, then we must guarantee that the called syscall is the same
- syscall we are catching. */
+ /* We must check if we are catching specific syscalls in this
+ breakpoint. If we are, then we must guarantee that the called
+ syscall is the same syscall we are catching. */
int syscall_number = 0;
+ const struct syscall_catchpoint *c
+ = (const struct syscall_catchpoint *) bl->owner;
if (!inferior_has_called_syscall (inferior_ptid, &syscall_number))
return 0;
/* Now, checking if the syscall is the same. */
- if (b->syscalls_to_be_caught)
+ if (c->syscalls_to_be_caught)
{
int i, iter;
for (i = 0;
- VEC_iterate (int, b->syscalls_to_be_caught, i, iter);
+ VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
i++)
if (syscall_number == iter)
break;
catchpoints. */
static enum print_stop_action
-print_it_catch_syscall (struct breakpoint *b)
+print_it_catch_syscall (bpstat bs)
{
+ struct breakpoint *b = bs->breakpoint_at;
/* These are needed because we want to know in which state a
syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY
or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we
static void
print_one_catch_syscall (struct breakpoint *b,
- struct bp_location **last_loc)
+ struct bp_location **last_loc)
{
+ struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
struct value_print_options opts;
+ struct ui_out *uiout = current_uiout;
get_user_print_options (&opts);
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
+ /* Field 4, the address, is omitted (which makes the columns not
+ line up too nicely with the headers, but the effect is relatively
+ readable). */
if (opts.addressprint)
ui_out_field_skip (uiout, "addr");
annotate_field (5);
- if (b->syscalls_to_be_caught
- && VEC_length (int, b->syscalls_to_be_caught) > 1)
+ if (c->syscalls_to_be_caught
+ && VEC_length (int, c->syscalls_to_be_caught) > 1)
ui_out_text (uiout, "syscalls \"");
else
ui_out_text (uiout, "syscall \"");
- if (b->syscalls_to_be_caught)
+ if (c->syscalls_to_be_caught)
{
int i, iter;
char *text = xstrprintf ("%s", "");
for (i = 0;
- VEC_iterate (int, b->syscalls_to_be_caught, i, iter);
+ VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
i++)
{
char *x = text;
text = xstrprintf ("%s%d, ", text, iter);
/* We have to xfree the last 'text' (now stored at 'x')
- because xstrprintf dinamically allocates new space for it
+ because xstrprintf dynamically allocates new space for it
on every call. */
xfree (x);
}
static void
print_mention_catch_syscall (struct breakpoint *b)
{
- if (b->syscalls_to_be_caught)
+ struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
+
+ if (c->syscalls_to_be_caught)
{
int i, iter;
- if (VEC_length (int, b->syscalls_to_be_caught) > 1)
+ if (VEC_length (int, c->syscalls_to_be_caught) > 1)
printf_filtered (_("Catchpoint %d (syscalls"), b->number);
else
printf_filtered (_("Catchpoint %d (syscall"), b->number);
for (i = 0;
- VEC_iterate (int, b->syscalls_to_be_caught, i, iter);
+ VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
i++)
{
struct syscall s;
static void
print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp)
{
+ struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
+
fprintf_unfiltered (fp, "catch syscall");
- if (b->syscalls_to_be_caught)
+ if (c->syscalls_to_be_caught)
{
int i, iter;
for (i = 0;
- VEC_iterate (int, b->syscalls_to_be_caught, i, iter);
+ VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
i++)
{
struct syscall s;
fprintf_unfiltered (fp, " %d", s.number);
}
}
+ print_recreate_thread (b, fp);
}
/* The breakpoint_ops structure to be used in syscall catchpoints. */
-static struct breakpoint_ops catch_syscall_breakpoint_ops =
-{
- insert_catch_syscall,
- remove_catch_syscall,
- breakpoint_hit_catch_syscall,
- print_it_catch_syscall,
- print_one_catch_syscall,
- print_mention_catch_syscall,
- print_recreate_catch_syscall
-};
+static struct breakpoint_ops catch_syscall_breakpoint_ops;
/* Returns non-zero if 'b' is a syscall catchpoint. */
return (b->ops == &catch_syscall_breakpoint_ops);
}
-/* Create a new breakpoint of the bp_catchpoint kind and return it,
- but does NOT mention it nor update the global location list.
- This is useful if you need to fill more fields in the
- struct breakpoint before calling mention.
-
- If TEMPFLAG is non-zero, then make the breakpoint temporary.
- If COND_STRING is not NULL, then store it in the breakpoint.
- OPS, if not NULL, is the breakpoint_ops structure associated
- to the catchpoint. */
+/* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG
+ is non-zero, then make the breakpoint temporary. If COND_STRING is
+ not NULL, then store it in the breakpoint. OPS, if not NULL, is
+ the breakpoint_ops structure associated to the catchpoint. */
-static struct breakpoint *
-create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag,
- char *cond_string,
- struct breakpoint_ops *ops)
+static void
+init_catchpoint (struct breakpoint *b,
+ struct gdbarch *gdbarch, int tempflag,
+ char *cond_string,
+ const struct breakpoint_ops *ops)
{
struct symtab_and_line sal;
- struct breakpoint *b;
init_sal (&sal);
sal.pspace = current_program_space;
- b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
+ init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops);
b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string);
- b->thread = -1;
- b->addr_string = NULL;
- b->enable_state = bp_enabled;
b->disposition = tempflag ? disp_del : disp_donttouch;
- b->ops = ops;
-
- return b;
}
-/* Create a new breakpoint of the bp_catchpoint kind and return it.
-
- If TEMPFLAG is non-zero, then make the breakpoint temporary.
- If COND_STRING is not NULL, then store it in the breakpoint.
- OPS, if not NULL, is the breakpoint_ops structure associated
- to the catchpoint. */
-
-static struct breakpoint *
-create_catchpoint (struct gdbarch *gdbarch, int tempflag,
- char *cond_string, struct breakpoint_ops *ops)
+void
+install_breakpoint (int internal, struct breakpoint *b)
{
- struct breakpoint *b =
- create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops);
-
- mention (b);
+ add_to_breakpoint_chain (b);
+ set_breakpoint_number (internal, b);
+ if (!internal)
+ mention (b);
+ observer_notify_breakpoint_created (b);
update_global_location_list (1);
-
- return b;
}
static void
create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch,
int tempflag, char *cond_string,
- struct breakpoint_ops *ops)
+ const struct breakpoint_ops *ops)
{
- struct breakpoint *b
- = create_catchpoint (gdbarch, tempflag, cond_string, ops);
+ struct fork_catchpoint *c = XNEW (struct fork_catchpoint);
+
+ init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops);
- /* FIXME: We should put this information in a breakpoint private data
- area. */
- b->forked_inferior_pid = null_ptid;
+ c->forked_inferior_pid = null_ptid;
+
+ install_breakpoint (0, &c->base);
}
/* Exec catchpoints. */
+/* An instance of this type is used to represent an exec catchpoint.
+ It includes a "struct breakpoint" as a kind of base class; users
+ downcast to "struct breakpoint *" when needed. A breakpoint is
+ really of this type iff its ops pointer points to
+ CATCH_EXEC_BREAKPOINT_OPS. */
+
+struct exec_catchpoint
+{
+ /* The base class. */
+ struct breakpoint base;
+
+ /* Filename of a program whose exec triggered this catchpoint.
+ This field is only valid immediately after this catchpoint has
+ triggered. */
+ char *exec_pathname;
+};
+
+/* Implement the "dtor" breakpoint_ops method for exec
+ catchpoints. */
+
static void
-insert_catch_exec (struct breakpoint *b)
+dtor_catch_exec (struct breakpoint *b)
+{
+ struct exec_catchpoint *c = (struct exec_catchpoint *) b;
+
+ xfree (c->exec_pathname);
+
+ base_breakpoint_ops.dtor (b);
+}
+
+static int
+insert_catch_exec (struct bp_location *bl)
{
- target_insert_exec_catchpoint (PIDGET (inferior_ptid));
+ return target_insert_exec_catchpoint (PIDGET (inferior_ptid));
}
static int
-remove_catch_exec (struct breakpoint *b)
+remove_catch_exec (struct bp_location *bl)
{
return target_remove_exec_catchpoint (PIDGET (inferior_ptid));
}
static int
-breakpoint_hit_catch_exec (struct breakpoint *b)
+breakpoint_hit_catch_exec (const struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR bp_addr)
{
- return inferior_has_execd (inferior_ptid, &b->exec_pathname);
+ struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner;
+
+ return inferior_has_execd (inferior_ptid, &c->exec_pathname);
}
static enum print_stop_action
-print_it_catch_exec (struct breakpoint *b)
+print_it_catch_exec (bpstat bs)
{
+ struct breakpoint *b = bs->breakpoint_at;
+ struct exec_catchpoint *c = (struct exec_catchpoint *) b;
+
annotate_catchpoint (b->number);
printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number,
- b->exec_pathname);
+ c->exec_pathname);
return PRINT_SRC_AND_LOC;
}
static void
print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc)
{
+ struct exec_catchpoint *c = (struct exec_catchpoint *) b;
struct value_print_options opts;
+ struct ui_out *uiout = current_uiout;
get_user_print_options (&opts);
ui_out_field_skip (uiout, "addr");
annotate_field (5);
ui_out_text (uiout, "exec");
- if (b->exec_pathname != NULL)
+ if (c->exec_pathname != NULL)
{
ui_out_text (uiout, ", program \"");
- ui_out_field_string (uiout, "what", b->exec_pathname);
+ ui_out_field_string (uiout, "what", c->exec_pathname);
ui_out_text (uiout, "\" ");
}
}
print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp)
{
fprintf_unfiltered (fp, "catch exec");
+ print_recreate_thread (b, fp);
}
-static struct breakpoint_ops catch_exec_breakpoint_ops =
-{
- insert_catch_exec,
- remove_catch_exec,
- breakpoint_hit_catch_exec,
- print_it_catch_exec,
- print_one_catch_exec,
- print_mention_catch_exec,
- print_recreate_catch_exec
-};
+static struct breakpoint_ops catch_exec_breakpoint_ops;
static void
create_syscall_event_catchpoint (int tempflag, VEC(int) *filter,
- struct breakpoint_ops *ops)
+ const struct breakpoint_ops *ops)
{
+ struct syscall_catchpoint *c;
struct gdbarch *gdbarch = get_current_arch ();
- struct breakpoint *b =
- create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops);
- b->syscalls_to_be_caught = filter;
+ c = XNEW (struct syscall_catchpoint);
+ init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops);
+ c->syscalls_to_be_caught = filter;
- /* Now, we have to mention the breakpoint and update the global
- location list. */
- mention (b);
- update_global_location_list (1);
+ install_breakpoint (0, &c->base);
}
static int
hw_breakpoint_used_count (void)
{
- struct breakpoint *b;
int i = 0;
+ struct breakpoint *b;
+ struct bp_location *bl;
ALL_BREAKPOINTS (b)
{
if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b))
- i++;
+ for (bl = b->loc; bl; bl = bl->next)
+ {
+ /* Special types of hardware breakpoints may use more than
+ one register. */
+ i += b->ops->resources_needed (bl);
+ }
}
return i;
}
+/* Returns the resources B would use if it were a hardware
+ watchpoint. */
+
static int
-hw_watchpoint_used_count (enum bptype type, int *other_type_used)
+hw_watchpoint_use_count (struct breakpoint *b)
+{
+ int i = 0;
+ struct bp_location *bl;
+
+ if (!breakpoint_enabled (b))
+ return 0;
+
+ for (bl = b->loc; bl; bl = bl->next)
+ {
+ /* Special types of hardware watchpoints may use more than
+ one register. */
+ i += b->ops->resources_needed (bl);
+ }
+
+ return i;
+}
+
+/* Returns the sum the used resources of all hardware watchpoints of
+ type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED
+ the sum of the used resources of all hardware watchpoints of other
+ types _not_ TYPE. */
+
+static int
+hw_watchpoint_used_count_others (struct breakpoint *except,
+ enum bptype type, int *other_type_used)
{
- struct breakpoint *b;
int i = 0;
+ struct breakpoint *b;
*other_type_used = 0;
ALL_BREAKPOINTS (b)
- {
- if (breakpoint_enabled (b))
- {
- if (b->type == type)
- i++;
- else if (is_hardware_watchpoint (b))
- *other_type_used = 1;
- }
- }
+ {
+ if (b == except)
+ continue;
+ if (!breakpoint_enabled (b))
+ continue;
+
+ if (b->type == type)
+ i += hw_watchpoint_use_count (b);
+ else if (is_hardware_watchpoint (b))
+ *other_type_used = 1;
+ }
+
return i;
}
one. */
gdb_assert (!frame_id_inlined_p (frame_id));
- b = set_raw_breakpoint (gdbarch, sal, type);
+ b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops);
b->enable_state = bp_enabled;
b->disposition = disp_donttouch;
b->frame_id = frame_id;
- /* If we're debugging a multi-threaded program, then we
- want momentary breakpoints to be active in only a
- single thread of control. */
+ /* 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_ptid))
b->thread = pid_to_thread_id (inferior_ptid);
return b;
}
-/* Make a deep copy of momentary breakpoint ORIG. Returns NULL if
- ORIG is NULL. */
+/* Make a momentary breakpoint based on the master breakpoint ORIG.
+ The new breakpoint will have type TYPE, and use OPS as it
+ breakpoint_ops. */
-struct breakpoint *
-clone_momentary_breakpoint (struct breakpoint *orig)
+static struct breakpoint *
+momentary_breakpoint_from_master (struct breakpoint *orig,
+ enum bptype type,
+ const struct breakpoint_ops *ops)
{
struct breakpoint *copy;
- /* If there's nothing to clone, then return nothing. */
- if (orig == NULL)
- return NULL;
-
- copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type);
+ copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops);
copy->loc = allocate_bp_location (copy);
- set_breakpoint_location_function (copy->loc);
+ set_breakpoint_location_function (copy->loc, 1);
copy->loc->gdbarch = orig->loc->gdbarch;
copy->loc->requested_address = orig->loc->requested_address;
return copy;
}
+/* Make a deep copy of momentary breakpoint ORIG. Returns NULL if
+ ORIG is NULL. */
+
+struct breakpoint *
+clone_momentary_breakpoint (struct breakpoint *orig)
+{
+ /* If there's nothing to clone, then return nothing. */
+ if (orig == NULL)
+ return NULL;
+
+ return momentary_breakpoint_from_master (orig, orig->type, orig->ops);
+}
+
struct breakpoint *
set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc,
enum bptype type)
static void
mention (struct breakpoint *b)
{
- int say_where = 0;
- struct cleanup *ui_out_chain;
- struct value_print_options opts;
-
- get_user_print_options (&opts);
-
- /* 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. */
- observer_notify_breakpoint_created (b->number);
-
- if (b->ops != NULL && b->ops->print_mention != NULL)
- b->ops->print_mention (b);
- else
- switch (b->type)
- {
- case bp_none:
- printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number);
- break;
- case bp_watchpoint:
- ui_out_text (uiout, "Watchpoint ");
- ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
- ui_out_field_int (uiout, "number", b->number);
- ui_out_text (uiout, ": ");
- ui_out_field_string (uiout, "exp", b->exp_string);
- do_cleanups (ui_out_chain);
- break;
- case bp_hardware_watchpoint:
- ui_out_text (uiout, "Hardware watchpoint ");
- ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
- ui_out_field_int (uiout, "number", b->number);
- ui_out_text (uiout, ": ");
- ui_out_field_string (uiout, "exp", b->exp_string);
- do_cleanups (ui_out_chain);
- break;
- case bp_read_watchpoint:
- ui_out_text (uiout, "Hardware read watchpoint ");
- ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt");
- ui_out_field_int (uiout, "number", b->number);
- ui_out_text (uiout, ": ");
- ui_out_field_string (uiout, "exp", b->exp_string);
- do_cleanups (ui_out_chain);
- break;
- case bp_access_watchpoint:
- ui_out_text (uiout, "Hardware access (read/write) watchpoint ");
- ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt");
- ui_out_field_int (uiout, "number", b->number);
- ui_out_text (uiout, ": ");
- ui_out_field_string (uiout, "exp", b->exp_string);
- do_cleanups (ui_out_chain);
- break;
- case bp_breakpoint:
- if (ui_out_is_mi_like_p (uiout))
- {
- say_where = 0;
- break;
- }
- if (b->disposition == disp_del)
- printf_filtered (_("Temporary breakpoint"));
- else
- printf_filtered (_("Breakpoint"));
- printf_filtered (_(" %d"), b->number);
- say_where = 1;
- break;
- case bp_hardware_breakpoint:
- if (ui_out_is_mi_like_p (uiout))
- {
- say_where = 0;
- break;
- }
- printf_filtered (_("Hardware assisted breakpoint %d"), b->number);
- say_where = 1;
- break;
- case bp_tracepoint:
- if (ui_out_is_mi_like_p (uiout))
- {
- say_where = 0;
- break;
- }
- printf_filtered (_("Tracepoint"));
- printf_filtered (_(" %d"), b->number);
- say_where = 1;
- break;
- case bp_fast_tracepoint:
- if (ui_out_is_mi_like_p (uiout))
- {
- say_where = 0;
- break;
- }
- printf_filtered (_("Fast tracepoint"));
- printf_filtered (_(" %d"), b->number);
- say_where = 1;
- break;
- case bp_static_tracepoint:
- if (ui_out_is_mi_like_p (uiout))
- {
- say_where = 0;
- break;
- }
- printf_filtered (_("Static tracepoint"));
- printf_filtered (_(" %d"), b->number);
- say_where = 1;
- break;
-
- case bp_until:
- case bp_finish:
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_exception:
- case bp_exception_resume:
- case bp_step_resume:
- case bp_call_dummy:
- case bp_std_terminate:
- case bp_watchpoint_scope:
- case bp_shlib_event:
- case bp_thread_event:
- case bp_overlay_event:
- case bp_jit_event:
- case bp_longjmp_master:
- case bp_std_terminate_master:
- case bp_exception_master:
- break;
- }
-
- if (say_where)
- {
- /* i18n: cagney/2005-02-11: Below needs to be merged into a
- single string. */
- if (b->loc == NULL)
- {
- printf_filtered (_(" (%s) pending."), b->addr_string);
- }
- else
- {
- if (opts.addressprint || b->source_file == NULL)
- {
- printf_filtered (" at ");
- fputs_filtered (paddress (b->loc->gdbarch, b->loc->address),
- gdb_stdout);
- }
- if (b->source_file)
- printf_filtered (": file %s, line %d.",
- b->source_file, b->line_number);
-
- if (b->loc->next)
- {
- struct bp_location *loc = b->loc;
- int n = 0;
- for (; loc; loc = loc->next)
- ++n;
- printf_filtered (" (%d locations)", n);
- }
-
- }
- }
- if (ui_out_is_mi_like_p (uiout))
- return;
- printf_filtered ("\n");
-}
-\f
+ b->ops->print_mention (b);
+ if (ui_out_is_mi_like_p (current_uiout))
+ return;
+ printf_filtered ("\n");
+}
+\f
static struct bp_location *
add_location_to_breakpoint (struct breakpoint *b,
gdb_assert (loc->pspace != NULL);
loc->section = sal->section;
- set_breakpoint_location_function (loc);
+ set_breakpoint_location_function (loc,
+ sal->explicit_pc || sal->explicit_line);
return loc;
}
\f
as condition expression. */
static void
-create_breakpoint_sal (struct gdbarch *gdbarch,
- struct symtabs_and_lines sals, char *addr_string,
- char *cond_string,
- enum bptype type, enum bpdisp disposition,
- int thread, int task, int ignore_count,
- struct breakpoint_ops *ops, int from_tty,
- int enabled, int internal)
+init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch,
+ struct symtabs_and_lines sals, char *addr_string,
+ char *cond_string,
+ enum bptype type, enum bpdisp disposition,
+ int thread, int task, int ignore_count,
+ const struct breakpoint_ops *ops, int from_tty,
+ int enabled, int internal, int display_canonical)
{
- struct breakpoint *b = NULL;
int i;
if (type == bp_hardware_breakpoint)
if (i == 0)
{
- b = set_raw_breakpoint (gdbarch, sal, type);
- set_breakpoint_number (internal, b);
+ init_raw_breakpoint (b, gdbarch, sal, type, ops);
b->thread = thread;
b->task = task;
if (type == bp_static_tracepoint)
{
+ struct tracepoint *t = (struct tracepoint *) b;
struct static_tracepoint_marker marker;
if (is_marker_spec (addr_string))
char *marker_str;
int i;
- while (*p == ' ' || *p == '\t')
- p++;
+ p = skip_spaces (p);
- endp = p;
- while (*endp != ' ' && *endp != '\t' && *endp != '\0')
- endp++;
+ endp = skip_to_space (p);
marker_str = savestring (p, endp - p);
- b->static_trace_marker_id = marker_str;
+ t->static_trace_marker_id = marker_str;
- printf_filtered (_("Probed static tracepoint marker \"%s\"\n"),
- b->static_trace_marker_id);
+ printf_filtered (_("Probed static tracepoint "
+ "marker \"%s\"\n"),
+ t->static_trace_marker_id);
}
else if (target_static_tracepoint_marker_at (sal.pc, &marker))
{
- b->static_trace_marker_id = xstrdup (marker.str_id);
+ t->static_trace_marker_id = xstrdup (marker.str_id);
release_static_tracepoint_marker (&marker);
- printf_filtered (_("Probed static tracepoint marker \"%s\"\n"),
- b->static_trace_marker_id);
+ printf_filtered (_("Probed static tracepoint "
+ "marker \"%s\"\n"),
+ t->static_trace_marker_id);
}
else
- warning (_("\
-Couldn't determine the static tracepoint marker to probe"));
+ warning (_("Couldn't determine the static "
+ "tracepoint marker to probe"));
}
if (enabled && b->pspace->executing_startup
}
}
+ b->display_canonical = display_canonical;
if (addr_string)
b->addr_string = addr_string;
else
me. */
b->addr_string
= xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address));
+}
- b->ops = ops;
- if (internal)
- /* Do not mention breakpoints with a negative number, but do
- notify observers. */
- observer_notify_breakpoint_created (b->number);
+static void
+create_breakpoint_sal (struct gdbarch *gdbarch,
+ struct symtabs_and_lines sals, char *addr_string,
+ char *cond_string,
+ enum bptype type, enum bpdisp disposition,
+ int thread, int task, int ignore_count,
+ const struct breakpoint_ops *ops, int from_tty,
+ int enabled, int internal, int display_canonical)
+{
+ struct breakpoint *b;
+ struct cleanup *old_chain;
+
+ if (is_tracepoint_type (type))
+ {
+ struct tracepoint *t;
+
+ t = XCNEW (struct tracepoint);
+ b = &t->base;
+ }
else
- mention (b);
+ b = XNEW (struct breakpoint);
+
+ old_chain = make_cleanup (xfree, b);
+
+ init_breakpoint_sal (b, gdbarch,
+ sals, addr_string,
+ cond_string,
+ type, disposition,
+ thread, task, ignore_count,
+ ops, from_tty,
+ enabled, internal, display_canonical);
+ discard_cleanups (old_chain);
+
+ install_breakpoint (internal, b);
}
/* Remove element at INDEX_TO_REMOVE from SAL, shifting other
if (expanded.nelts <= 1)
{
- /* This is un ugly workaround. If we get zero
- expanded sals then something is really wrong.
- Fix that by returnign the original sal. */
+ /* This is an ugly workaround. If we get zero expanded sals
+ then something is really wrong. Fix that by returning the
+ original sal. */
+
xfree (expanded.sals);
expanded.nelts = 1;
expanded.sals = xmalloc (sizeof (struct symtab_and_line));
the arrays ADDR_STRING, COND_STRING, and SALS (but not the
array contents). If the function fails (error() is called), the
caller is expected to cleanups both the ADDR_STRING, COND_STRING,
- COND and SALS arrays and each of those arrays contents. */
+ COND and SALS arrays and each of those arrays contents. */
static void
create_breakpoints_sal (struct gdbarch *gdbarch,
- struct symtabs_and_lines sals, char **addr_string,
+ struct symtabs_and_lines sals,
+ struct linespec_result *canonical,
char *cond_string,
enum bptype type, enum bpdisp disposition,
int thread, int task, int ignore_count,
- struct breakpoint_ops *ops, int from_tty,
+ const struct breakpoint_ops *ops, int from_tty,
int enabled, int internal)
{
int i;
struct symtabs_and_lines expanded =
expand_line_sal_maybe (sals.sals[i]);
- create_breakpoint_sal (gdbarch, expanded, addr_string[i],
+ create_breakpoint_sal (gdbarch, expanded, canonical->canonical[i],
cond_string, type, disposition,
thread, task, ignore_count, ops,
- from_tty, enabled, internal);
+ from_tty, enabled, internal,
+ canonical->special_display);
}
}
-/* Parse ARG which is assumed to be a SAL specification possibly
+/* Parse ADDRESS which is assumed to be a SAL specification possibly
followed by conditionals. On return, SALS contains an array of SAL
- addresses found. ADDR_STRING contains a vector of (canonical)
- address strings. ARG points to the end of the SAL. */
+ addresses found. ADDR_STRING contains a vector of (canonical)
+ address strings. ADDRESS points to the end of the SAL.
+
+ The array and the line spec strings are allocated on the heap, it is
+ the caller's responsibility to free them. */
static void
parse_breakpoint_sals (char **address,
struct symtabs_and_lines *sals,
- char ***addr_string,
- int *not_found_ptr)
+ struct linespec_result *canonical)
{
char *addr_start = *address;
- *addr_string = NULL;
/* If no arg given, or if first arg is 'if ', use the default
- breakpoint. */
+ breakpoint. */
if ((*address) == NULL
|| (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2])))
{
{
struct symtab_and_line sal;
- init_sal (&sal); /* initialize to zeroes */
+ init_sal (&sal); /* Initialize to zeroes. */
sals->sals = (struct symtab_and_line *)
xmalloc (sizeof (struct symtab_and_line));
sal.pc = default_breakpoint_address;
sal.pspace = default_breakpoint_pspace;
sal.section = find_pc_overlay (sal.pc);
- /* "break" without arguments is equivalent to "break *PC" where PC is
- the default_breakpoint_address. So make sure to set
- sal.explicit_pc to prevent GDB from trying to expand the list of
- sals to include all other instances with the same symtab and line.
- */
+ /* "break" without arguments is equivalent to "break *PC"
+ where PC is the default_breakpoint_address. So make sure
+ to set sal.explicit_pc to prevent GDB from trying to
+ expand the list of sals to include all other instances
+ with the same symtab and line. */
sal.explicit_pc = 1;
sals->sals[0] = sal;
else
{
/* Force almost all breakpoints to be in terms of the
- current_source_symtab (which is decode_line_1's default). This
- should produce the results we want almost all of the time while
- leaving default_breakpoint_* alone.
+ current_source_symtab (which is decode_line_1's default).
+ This should produce the results we want almost all of the
+ time while leaving default_breakpoint_* alone.
+
ObjC: However, don't match an Objective-C method name which
may have a '+' or '-' succeeded by a '[' */
|| ((strchr ("+-", (*address)[0]) != NULL)
&& ((*address)[1] != '['))))
*sals = decode_line_1 (address, 1, default_breakpoint_symtab,
- default_breakpoint_line, addr_string,
- not_found_ptr);
+ default_breakpoint_line, canonical);
else
*sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0,
- addr_string, not_found_ptr);
+ canonical);
}
- /* For any SAL that didn't have a canonical string, fill one in. */
- if (sals->nelts > 0 && *addr_string == NULL)
- *addr_string = xcalloc (sals->nelts, sizeof (char **));
+ /* For any SAL that didn't have a canonical string, fill one in. */
+ if (sals->nelts > 0 && canonical->canonical == NULL)
+ canonical->canonical = xcalloc (sals->nelts, sizeof (char *));
if (addr_start != (*address))
{
int i;
for (i = 0; i < sals->nelts; i++)
{
- /* Add the string if not present. */
- if ((*addr_string)[i] == NULL)
- (*addr_string)[i] = savestring (addr_start,
- (*address) - addr_start);
+ /* Add the string if not present. */
+ if (canonical->canonical[i] == NULL)
+ canonical->canonical[i] = savestring (addr_start,
+ (*address) - addr_start);
}
}
}
/* Convert each SAL into a real PC. Verify that the PC can be
- inserted as a breakpoint. If it can't throw an error. */
+ inserted as a breakpoint. If it can't throw an error. */
static void
breakpoint_sals_to_pc (struct symtabs_and_lines *sals)
}
}
-static void
-do_captured_parse_breakpoint (struct ui_out *ui, void *data)
-{
- struct captured_parse_breakpoint_args *args = data;
-
- parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p,
- args->not_found_ptr);
-}
-
/* Given TOK, a string specification of condition and thread, as
accepted by the 'break' command, extract the condition
string and thread number and set *COND_STRING and *THREAD.
- PC identifies the context at which the condition should be parsed.
+ PC identifies the context at which the condition should be parsed.
If no condition is found, *COND_STRING is set to NULL.
If no thread is found, *THREAD is set to -1. */
static void
char *cond_start = NULL;
char *cond_end = NULL;
- while (*tok == ' ' || *tok == '\t')
- tok++;
+ tok = skip_spaces (tok);
- end_tok = tok;
-
- while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
- end_tok++;
+ end_tok = skip_to_space (tok);
toklen = end_tok - tok;
char *marker_str;
int i;
- while (*p == ' ' || *p == '\t')
- p++;
+ p = skip_spaces (p);
- endp = p;
- while (*endp != ' ' && *endp != '\t' && *endp != '\0')
- endp++;
+ endp = skip_to_space (p);
marker_str = savestring (p, endp - p);
old_chain = make_cleanup (xfree, marker_str);
functions for setting a breakpoint. This function has two major
modes of operations, selected by the PARSE_CONDITION_AND_THREAD
parameter. If non-zero, the function will parse arg, extracting
- breakpoint location, address and thread. Otherwise, ARG is just the
- location of breakpoint, with condition and thread specified by the
- COND_STRING and THREAD parameters. If INTERNAL is non-zero, the
- breakpoint number will be allocated from the internal breakpoint
- count. Returns true if any breakpoint was created; false
- otherwise. */
+ breakpoint location, address and thread. Otherwise, ARG is just
+ the location of breakpoint, with condition and thread specified by
+ the COND_STRING and THREAD parameters. If INTERNAL is non-zero,
+ the breakpoint number will be allocated from the internal
+ breakpoint count. Returns true if any breakpoint was created;
+ false otherwise. */
int
create_breakpoint (struct gdbarch *gdbarch,
int tempflag, enum bptype type_wanted,
int ignore_count,
enum auto_boolean pending_break_support,
- struct breakpoint_ops *ops,
+ const struct breakpoint_ops *ops,
int from_tty, int enabled, int internal)
{
- struct gdb_exception e;
+ volatile struct gdb_exception e;
struct symtabs_and_lines sals;
struct symtab_and_line pending_sal;
char *copy_arg;
char *addr_start = arg;
- char **addr_string;
+ struct linespec_result canonical;
struct cleanup *old_chain;
struct cleanup *bkpt_chain = NULL;
- struct captured_parse_breakpoint_args parse_args;
int i;
int pending = 0;
- int not_found = 0;
int task = 0;
int prev_bkpt_count = breakpoint_count;
+ gdb_assert (ops != NULL);
+
sals.sals = NULL;
sals.nelts = 0;
- addr_string = NULL;
-
- parse_args.arg_p = &arg;
- parse_args.sals_p = &sals;
- parse_args.addr_string_p = &addr_string;
- parse_args.not_found_ptr = ¬_found;
+ init_linespec_result (&canonical);
if (type_wanted == bp_static_tracepoint && is_marker_spec (arg))
{
sals = decode_static_tracepoint_spec (&arg);
copy_arg = savestring (addr_start, arg - addr_start);
- addr_string = xcalloc (sals.nelts, sizeof (char **));
+ canonical.canonical = xcalloc (sals.nelts, sizeof (char *));
for (i = 0; i < sals.nelts; i++)
- addr_string[i] = xstrdup (copy_arg);
+ canonical.canonical[i] = xstrdup (copy_arg);
goto done;
}
- e = catch_exception (uiout, do_captured_parse_breakpoint,
- &parse_args, RETURN_MASK_ALL);
+ TRY_CATCH (e, RETURN_MASK_ALL)
+ {
+ parse_breakpoint_sals (&arg, &sals, &canonical);
+ }
/* If caller is interested in rc value from parse, set value. */
switch (e.reason)
/* If pending breakpoint support is auto query and the user
selects no, then simply return the error code. */
if (pending_break_support == AUTO_BOOLEAN_AUTO
- && !nquery (_("Make breakpoint pending on future shared library load? ")))
+ && !nquery (_("Make breakpoint pending on "
+ "future shared library load? ")))
return 0;
/* At this point, either the user was queried about setting
breakpoint behavior is on and thus a pending breakpoint
is defaulted on behalf of the user. */
copy_arg = xstrdup (addr_start);
- addr_string = ©_arg;
+ canonical.canonical = ©_arg;
sals.nelts = 1;
sals.sals = &pending_sal;
pending_sal.pc = 0;
default:
throw_exception (e);
}
+ break;
default:
if (!sals.nelts)
return 0;
done:
- /* Create a chain of things that always need to be cleaned up. */
+ /* Create a chain of things that always need to be cleaned up. */
old_chain = make_cleanup (null_cleanup, 0);
if (!pending)
/* Make sure that all storage allocated to SALS gets freed. */
make_cleanup (xfree, sals.sals);
- /* Cleanup the addr_string array but not its contents. */
- make_cleanup (xfree, addr_string);
+ /* Cleanup the canonical array but not its contents. */
+ make_cleanup (xfree, canonical.canonical);
}
/* ----------------------------- SNIP -----------------------------
then the memory is not reclaimed. */
bkpt_chain = make_cleanup (null_cleanup, 0);
- /* Mark the contents of the addr_string for cleanup. These go on
+ /* Mark the contents of the canonical for cleanup. These go on
the bkpt_chain and only occur if the breakpoint create fails. */
for (i = 0; i < sals.nelts; i++)
{
- if (addr_string[i] != NULL)
- make_cleanup (xfree, addr_string[i]);
+ if (canonical.canonical[i] != NULL)
+ make_cleanup (xfree, canonical.canonical[i]);
}
/* Resolve all line numbers to PC's and verify that the addresses
/* Verify that condition can be parsed, before setting any
breakpoints. Allocate a separate condition expression for each
- breakpoint. */
+ breakpoint. */
if (!pending)
{
if (parse_condition_and_thread)
expand multiple locations for each sal, given than SALS
already should contain all sals for MARKER_ID. */
if (type_wanted == bp_static_tracepoint
- && is_marker_spec (addr_string[0]))
+ && is_marker_spec (canonical.canonical[0]))
{
int i;
for (i = 0; i < sals.nelts; ++i)
{
struct symtabs_and_lines expanded;
- struct breakpoint *tp;
+ struct tracepoint *tp;
struct cleanup *old_chain;
expanded.nelts = 1;
expanded.sals[0] = sals.sals[i];
old_chain = make_cleanup (xfree, expanded.sals);
- create_breakpoint_sal (gdbarch, expanded, addr_string[i],
- cond_string, type_wanted,
- tempflag ? disp_del : disp_donttouch,
- thread, task, ignore_count, ops,
- from_tty, enabled, internal);
-
- do_cleanups (old_chain);
-
- /* Get the tracepoint we just created. */
- if (internal)
- tp = get_breakpoint (internal_breakpoint_number);
- else
- tp = get_breakpoint (breakpoint_count);
- gdb_assert (tp != NULL);
-
+ tp = XCNEW (struct tracepoint);
+ init_breakpoint_sal (&tp->base, gdbarch, expanded,
+ canonical.canonical[i],
+ cond_string, type_wanted,
+ tempflag ? disp_del : disp_donttouch,
+ thread, task, ignore_count, ops,
+ from_tty, enabled, internal,
+ canonical.special_display);
/* Given that its possible to have multiple markers with
the same string id, if the user is creating a static
tracepoint by marker id ("strace -m MARKER_ID"), then
try to match up which of the newly found markers
corresponds to this one */
tp->static_trace_marker_id_idx = i;
+
+ install_breakpoint (internal, &tp->base);
+
+ do_cleanups (old_chain);
}
}
else
- create_breakpoints_sal (gdbarch, sals, addr_string, cond_string,
- type_wanted, tempflag ? disp_del : disp_donttouch,
+ create_breakpoints_sal (gdbarch, sals, &canonical, cond_string,
+ type_wanted,
+ tempflag ? disp_del : disp_donttouch,
thread, task, ignore_count, ops, from_tty,
enabled, internal);
}
make_cleanup (xfree, copy_arg);
- b = set_raw_breakpoint_without_location (gdbarch, type_wanted);
+ b = set_raw_breakpoint_without_location (gdbarch, type_wanted, ops);
set_breakpoint_number (internal, b);
b->thread = -1;
- b->addr_string = addr_string[0];
+ b->addr_string = canonical.canonical[0];
b->cond_string = NULL;
b->ignore_count = ignore_count;
b->disposition = tempflag ? disp_del : disp_donttouch;
b->condition_not_parsed = 1;
- b->ops = ops;
b->enable_state = enabled ? bp_enabled : bp_disabled;
b->pspace = current_program_space;
b->py_bp_object = NULL;
|| b->type == bp_hardware_breakpoint))
b->enable_state = bp_startup_disabled;
- if (internal)
+ if (!internal)
/* Do not mention breakpoints with a negative number,
but do notify observers. */
- observer_notify_breakpoint_created (b->number);
- else
- mention (b);
+ mention (b);
+ observer_notify_breakpoint_created (b);
}
if (sals.nelts > 1)
{
- warning (_("Multiple breakpoints were set.\n"
- "Use the \"delete\" command to delete unwanted breakpoints."));
+ warning (_("Multiple breakpoints were set.\nUse the "
+ "\"delete\" command to delete unwanted breakpoints."));
prev_breakpoint_count = prev_bkpt_count;
}
return 1;
}
-/* Set a breakpoint.
+/* Set a breakpoint.
ARG is a string describing breakpoint address,
condition, and thread.
FLAG specifies if a breakpoint is hardware on,
and if breakpoint is temporary, using BP_HARDWARE_FLAG
and BP_TEMPFLAG. */
-
+
static void
break_command_1 (char *arg, int flag, int from_tty)
{
tempflag, type_wanted,
0 /* Ignore count */,
pending_break_support,
- NULL /* breakpoint_ops */,
+ &bkpt_breakpoint_ops,
from_tty,
1 /* enabled */,
0 /* internal */);
}
-
/* Helper function for break_command_1 and disassemble_command. */
void
sal->line, sal->symtab->filename);
sal->pc = pc;
- /* If this SAL corresponds to a breakpoint inserted using
- a line number, then skip the function prologue if necessary. */
+ /* If this SAL corresponds to a breakpoint inserted using a line
+ number, then skip the function prologue if necessary. */
if (sal->explicit_line)
skip_prologue_sal (sal);
}
}
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). */
+ /* 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;
struct cleanup *old_chain = save_current_space_and_thread ();
char *argptr = arg;
int hasColon = 0;
- /* look for a ':'. If this is a line number specification, then
+ /* 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 */
+ function/method name. */
while (*argptr && !hasColon)
{
hasColon = (*argptr == ':');
char *argptr = arg;
int hasColon = 0;
- /* look for a ':'. If there is a '::' then get out, otherwise
- it is probably a line number. */
+ /* Look for a ':'. If there is a '::' then get out, otherwise
+ it is probably a line number. */
while (*argptr && !hasColon)
{
hasColon = (*argptr == ':');
break_command_1 (arg, 0, from_tty);
}
-/* Return non-zero if EXP is verified as constant. Returned zero means EXP is
- variable. Also the constant detection may fail for some constant
- expressions and in such case still falsely return zero. */
+/* Implement the "breakpoint_hit" breakpoint_ops method for
+ ranged breakpoints. */
+
+static int
+breakpoint_hit_ranged_breakpoint (const struct bp_location *bl,
+ struct address_space *aspace,
+ CORE_ADDR bp_addr)
+{
+ return breakpoint_address_match_range (bl->pspace->aspace, bl->address,
+ bl->length, aspace, bp_addr);
+}
+
+/* Implement the "resources_needed" breakpoint_ops method for
+ ranged breakpoints. */
+
+static int
+resources_needed_ranged_breakpoint (const struct bp_location *bl)
+{
+ return target_ranged_break_num_registers ();
+}
+
+/* Implement the "print_it" breakpoint_ops method for
+ ranged breakpoints. */
+
+static enum print_stop_action
+print_it_ranged_breakpoint (bpstat bs)
+{
+ struct breakpoint *b = bs->breakpoint_at;
+ struct bp_location *bl = b->loc;
+ struct ui_out *uiout = current_uiout;
+
+ gdb_assert (b->type == bp_hardware_breakpoint);
+
+ /* Ranged breakpoints have only one location. */
+ gdb_assert (bl && bl->next == NULL);
+
+ annotate_breakpoint (b->number);
+ if (b->disposition == disp_del)
+ ui_out_text (uiout, "\nTemporary ranged breakpoint ");
+ else
+ ui_out_text (uiout, "\nRanged breakpoint ");
+ if (ui_out_is_mi_like_p (uiout))
+ {
+ ui_out_field_string (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
+ ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
+ }
+ ui_out_field_int (uiout, "bkptno", b->number);
+ ui_out_text (uiout, ", ");
+
+ return PRINT_SRC_AND_LOC;
+}
+
+/* Implement the "print_one" breakpoint_ops method for
+ ranged breakpoints. */
+
+static void
+print_one_ranged_breakpoint (struct breakpoint *b,
+ struct bp_location **last_loc)
+{
+ struct bp_location *bl = b->loc;
+ struct value_print_options opts;
+ struct ui_out *uiout = current_uiout;
+
+ /* Ranged breakpoints have only one location. */
+ gdb_assert (bl && bl->next == NULL);
+
+ get_user_print_options (&opts);
+
+ if (opts.addressprint)
+ /* We don't print the address range here, it will be printed later
+ by print_one_detail_ranged_breakpoint. */
+ ui_out_field_skip (uiout, "addr");
+ annotate_field (5);
+ print_breakpoint_location (b, bl);
+ *last_loc = bl;
+}
+
+/* Implement the "print_one_detail" breakpoint_ops method for
+ ranged breakpoints. */
+
+static void
+print_one_detail_ranged_breakpoint (const struct breakpoint *b,
+ struct ui_out *uiout)
+{
+ CORE_ADDR address_start, address_end;
+ struct bp_location *bl = b->loc;
+ struct ui_stream *stb = ui_out_stream_new (uiout);
+ struct cleanup *cleanup = make_cleanup_ui_out_stream_delete (stb);
+
+ gdb_assert (bl);
+
+ address_start = bl->address;
+ address_end = address_start + bl->length - 1;
+
+ ui_out_text (uiout, "\taddress range: ");
+ fprintf_unfiltered (stb->stream, "[%s, %s]",
+ print_core_address (bl->gdbarch, address_start),
+ print_core_address (bl->gdbarch, address_end));
+ ui_out_field_stream (uiout, "addr", stb);
+ ui_out_text (uiout, "\n");
+
+ do_cleanups (cleanup);
+}
+
+/* Implement the "print_mention" breakpoint_ops method for
+ ranged breakpoints. */
+
+static void
+print_mention_ranged_breakpoint (struct breakpoint *b)
+{
+ struct bp_location *bl = b->loc;
+ struct ui_out *uiout = current_uiout;
+
+ gdb_assert (bl);
+ gdb_assert (b->type == bp_hardware_breakpoint);
+
+ if (ui_out_is_mi_like_p (uiout))
+ return;
+
+ printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."),
+ b->number, paddress (bl->gdbarch, bl->address),
+ paddress (bl->gdbarch, bl->address + bl->length - 1));
+}
+
+/* Implement the "print_recreate" breakpoint_ops method for
+ ranged breakpoints. */
+
+static void
+print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp)
+{
+ fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string,
+ b->addr_string_range_end);
+ print_recreate_thread (b, fp);
+}
+
+/* The breakpoint_ops structure to be used in ranged breakpoints. */
+
+static struct breakpoint_ops ranged_breakpoint_ops;
+
+/* Find the address where the end of the breakpoint range should be
+ placed, given the SAL of the end of the range. This is so that if
+ the user provides a line number, the end of the range is set to the
+ last instruction of the given line. */
+
+static CORE_ADDR
+find_breakpoint_range_end (struct symtab_and_line sal)
+{
+ CORE_ADDR end;
+
+ /* If the user provided a PC value, use it. Otherwise,
+ find the address of the end of the given location. */
+ if (sal.explicit_pc)
+ end = sal.pc;
+ else
+ {
+ int ret;
+ CORE_ADDR start;
+
+ ret = find_line_pc_range (sal, &start, &end);
+ if (!ret)
+ error (_("Could not find location of the end of the range."));
+
+ /* find_line_pc_range returns the start of the next line. */
+ end--;
+ }
+
+ return end;
+}
+
+/* Implement the "break-range" CLI command. */
+
+static void
+break_range_command (char *arg, int from_tty)
+{
+ char *arg_start, *addr_string_start, *addr_string_end;
+ struct linespec_result canonical_start, canonical_end;
+ int bp_count, can_use_bp, length;
+ CORE_ADDR end;
+ struct breakpoint *b;
+ struct symtab_and_line sal_start, sal_end;
+ struct symtabs_and_lines sals_start, sals_end;
+ struct cleanup *cleanup_bkpt;
+
+ /* We don't support software ranged breakpoints. */
+ if (target_ranged_break_num_registers () < 0)
+ error (_("This target does not support hardware ranged breakpoints."));
+
+ bp_count = hw_breakpoint_used_count ();
+ bp_count += target_ranged_break_num_registers ();
+ can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint,
+ bp_count, 0);
+ if (can_use_bp < 0)
+ error (_("Hardware breakpoints used exceeds limit."));
+
+ if (arg == NULL || arg[0] == '\0')
+ error(_("No address range specified."));
+
+ sals_start.sals = NULL;
+ sals_start.nelts = 0;
+ init_linespec_result (&canonical_start);
+
+ while (*arg == ' ' || *arg == '\t')
+ arg++;
+
+ parse_breakpoint_sals (&arg, &sals_start, &canonical_start);
+
+ sal_start = sals_start.sals[0];
+ addr_string_start = canonical_start.canonical[0];
+ cleanup_bkpt = make_cleanup (xfree, addr_string_start);
+ xfree (sals_start.sals);
+ xfree (canonical_start.canonical);
+
+ if (arg[0] != ',')
+ error (_("Too few arguments."));
+ else if (sals_start.nelts == 0)
+ error (_("Could not find location of the beginning of the range."));
+ else if (sals_start.nelts != 1)
+ error (_("Cannot create a ranged breakpoint with multiple locations."));
+
+ resolve_sal_pc (&sal_start);
+
+ arg++; /* Skip the comma. */
+ while (*arg == ' ' || *arg == '\t')
+ arg++;
+
+ /* Parse the end location. */
+
+ sals_end.sals = NULL;
+ sals_end.nelts = 0;
+ init_linespec_result (&canonical_end);
+ arg_start = arg;
+
+ /* We call decode_line_1 directly here instead of using
+ parse_breakpoint_sals because we need to specify the start location's
+ symtab and line as the default symtab and line for the end of the
+ range. This makes it possible to have ranges like "foo.c:27, +14",
+ where +14 means 14 lines from the start location. */
+ sals_end = decode_line_1 (&arg, 1, sal_start.symtab, sal_start.line,
+ &canonical_end);
+
+ /* canonical_end can be NULL if it was of the form "*0xdeadbeef". */
+ if (canonical_end.canonical == NULL)
+ canonical_end.canonical = xcalloc (1, sizeof (char *));
+ /* Add the string if not present. */
+ if (arg_start != arg && canonical_end.canonical[0] == NULL)
+ canonical_end.canonical[0] = savestring (arg_start, arg - arg_start);
+
+ sal_end = sals_end.sals[0];
+ addr_string_end = canonical_end.canonical[0];
+ make_cleanup (xfree, addr_string_end);
+ xfree (sals_end.sals);
+ xfree (canonical_end.canonical);
+
+ if (sals_end.nelts == 0)
+ error (_("Could not find location of the end of the range."));
+ else if (sals_end.nelts != 1)
+ error (_("Cannot create a ranged breakpoint with multiple locations."));
+
+ resolve_sal_pc (&sal_end);
+
+ end = find_breakpoint_range_end (sal_end);
+ if (sal_start.pc > end)
+ error (_("Invalid address range, end precedes start."));
+
+ length = end - sal_start.pc + 1;
+ if (length < 0)
+ /* Length overflowed. */
+ error (_("Address range too large."));
+ else if (length == 1)
+ {
+ /* This range is simple enough to be handled by
+ the `hbreak' command. */
+ hbreak_command (addr_string_start, 1);
+
+ do_cleanups (cleanup_bkpt);
+
+ return;
+ }
+
+ /* Now set up the breakpoint. */
+ b = set_raw_breakpoint (get_current_arch (), sal_start,
+ bp_hardware_breakpoint, &ranged_breakpoint_ops);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->disposition = disp_donttouch;
+ b->addr_string = addr_string_start;
+ b->addr_string_range_end = addr_string_end;
+ b->loc->length = length;
+
+ discard_cleanups (cleanup_bkpt);
+
+ mention (b);
+ observer_notify_breakpoint_created (b);
+ update_global_location_list (1);
+}
+
+/* Return non-zero if EXP is verified as constant. Returned zero
+ means EXP is variable. Also the constant detection may fail for
+ some constant expressions and in such case still falsely return
+ zero. */
static int
watchpoint_exp_is_const (const struct expression *exp)
{
case UNOP_COMPLEMENT:
case UNOP_ADDR:
case UNOP_HIGH:
- /* Unary, binary and ternary operators: We have to check their
- operands. If they are constant, then so is the result of
- that operation. For instance, if A and B are determined to be
- constants, then so is "A + B".
-
- UNOP_IND is one exception to the rule above, because the value
- of *ADDR is not necessarily a constant, even when ADDR is. */
+ /* Unary, binary and ternary operators: We have to check
+ their operands. If they are constant, then so is the
+ result of that operation. For instance, if A and B are
+ determined to be constants, then so is "A + B".
+
+ UNOP_IND is one exception to the rule above, because the
+ value of *ADDR is not necessarily a constant, even when
+ ADDR is. */
break;
case OP_VAR_VALUE:
/* Check whether the associated symbol is a constant.
+
We use SYMBOL_CLASS rather than TYPE_CONST because it's
- possible that a buggy compiler could mark a variable as constant
- even when it is not, and TYPE_CONST would return true in this
- case, while SYMBOL_CLASS wouldn't.
- We also have to check for function symbols because they are
- always constant. */
+ possible that a buggy compiler could mark a variable as
+ constant even when it is not, and TYPE_CONST would return
+ true in this case, while SYMBOL_CLASS wouldn't.
+
+ We also have to check for function symbols because they
+ are always constant. */
{
struct symbol *s = exp->elts[i + 2].symbol;
return 1;
}
-/* accessflag: hw_write: watch write,
- hw_read: watch read,
- hw_access: watch access (read or write) */
+/* Implement the "dtor" breakpoint_ops method for watchpoints. */
+
static void
-watch_command_1 (char *arg, int accessflag, int from_tty,
- int just_location, int internal)
+dtor_watchpoint (struct breakpoint *self)
{
- struct breakpoint *b, *scope_breakpoint = NULL;
- struct expression *exp;
- struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL;
- struct value *val, *mark, *result;
- struct frame_info *frame;
- char *exp_start = NULL;
- char *exp_end = NULL;
- char *tok, *id_tok_start, *end_tok;
- int toklen;
- char *cond_start = NULL;
- char *cond_end = NULL;
- int i, other_type_used, target_resources_ok = 0;
- enum bptype bp_type;
- int mem_cnt = 0;
- int thread = -1;
- int pc = 0;
+ struct watchpoint *w = (struct watchpoint *) self;
- /* Make sure that we actually have parameters to parse. */
- if (arg != NULL && arg[0] != '\0')
- {
- toklen = strlen (arg); /* Size of argument list. */
+ xfree (w->cond_exp);
+ xfree (w->exp);
+ xfree (w->exp_string);
+ xfree (w->exp_string_reparse);
+ value_free (w->val);
- /* Points tok to the end of the argument list. */
- tok = arg + toklen - 1;
+ base_breakpoint_ops.dtor (self);
+}
- /* Go backwards in the parameters list. Skip the last parameter.
- If we're expecting a 'thread <thread_num>' parameter, this should
- be the thread identifier. */
- while (tok > arg && (*tok == ' ' || *tok == '\t'))
- tok--;
- while (tok > arg && (*tok != ' ' && *tok != '\t'))
- tok--;
+/* Implement the "re_set" breakpoint_ops method for watchpoints. */
- /* Points end_tok to the beginning of the last token. */
- id_tok_start = tok + 1;
+static void
+re_set_watchpoint (struct breakpoint *b)
+{
+ struct watchpoint *w = (struct watchpoint *) b;
- /* Go backwards in the parameters list. Skip one more parameter.
- If we're expecting a 'thread <thread_num>' parameter, we should
- reach a "thread" token. */
- while (tok > arg && (*tok == ' ' || *tok == '\t'))
- tok--;
+ /* Watchpoint can be either on expression using entirely global
+ variables, or it can be on local variables.
- end_tok = tok;
+ Watchpoints of the first kind are never auto-deleted, and even
+ persist across program restarts. Since they can use variables
+ from shared libraries, we need to reparse expression as libraries
+ are loaded and unloaded.
- while (tok > arg && (*tok != ' ' && *tok != '\t'))
- tok--;
+ Watchpoints on local variables can also change meaning as result
+ of solib event. For example, if a watchpoint uses both a local
+ and a global variables in expression, it's a local watchpoint,
+ but unloading of a shared library will make the expression
+ invalid. This is not a very common use case, but we still
+ re-evaluate expression, to avoid surprises to the user.
- /* Move the pointer forward to skip the whitespace and
- calculate the length of the token. */
- tok++;
- toklen = end_tok - tok;
+ Note that for local watchpoints, we re-evaluate it only if
+ watchpoints frame id is still valid. If it's not, it means the
+ watchpoint is out of scope and will be deleted soon. In fact,
+ I'm not sure we'll ever be called in this case.
- if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
- {
- /* At this point we've found a "thread" token, which means
- the user is trying to set a watchpoint that triggers
- only in a specific thread. */
- char *endp;
-
- /* Extract the thread ID from the next token. */
- thread = strtol (id_tok_start, &endp, 0);
-
- /* Check if the user provided a valid numeric value for the
- thread ID. */
- if (*endp != ' ' && *endp != '\t' && *endp != '\0')
- error (_("Invalid thread ID specification %s."), id_tok_start);
-
- /* Check if the thread actually exists. */
- if (!valid_thread_id (thread))
- error (_("Unknown thread %d."), thread);
-
- /* Truncate the string and get rid of the thread <thread_num>
- parameter before the parameter list is parsed by the
- evaluate_expression() function. */
- *tok = '\0';
- }
- }
+ If a local watchpoint's frame id is still valid, then
+ w->exp_valid_block is likewise valid, and we can safely use it.
- /* Parse the rest of the arguments. */
- innermost_block = NULL;
- exp_start = arg;
- exp = parse_exp_1 (&arg, 0, 0);
- exp_end = arg;
- /* Remove trailing whitespace from the expression before saving it.
- This makes the eventual display of the expression string a bit
- prettier. */
- while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t'))
- --exp_end;
+ Don't do anything about disabled watchpoints, since they will be
+ reevaluated again when enabled. */
+ update_watchpoint (w, 1 /* reparse */);
+}
- /* Checking if the expression is not constant. */
- if (watchpoint_exp_is_const (exp))
- {
- int len;
+/* Implement the "insert" breakpoint_ops method for hardware watchpoints. */
- len = exp_end - exp_start;
- while (len > 0 && isspace (exp_start[len - 1]))
- len--;
- error (_("Cannot watch constant value `%.*s'."), len, exp_start);
- }
+static int
+insert_watchpoint (struct bp_location *bl)
+{
+ struct watchpoint *w = (struct watchpoint *) bl->owner;
+ int length = w->exact ? 1 : bl->length;
- exp_valid_block = innermost_block;
- mark = value_mark ();
- fetch_subexp_value (exp, &pc, &val, &result, NULL);
+ return target_insert_watchpoint (bl->address, length, bl->watchpoint_type,
+ w->cond_exp);
+}
- if (just_location)
- {
- exp_valid_block = NULL;
- val = value_addr (result);
- release_value (val);
- value_free_to_mark (mark);
- }
- else if (val != NULL)
- release_value (val);
+/* Implement the "remove" breakpoint_ops method for hardware watchpoints. */
- tok = arg;
- while (*tok == ' ' || *tok == '\t')
- tok++;
- end_tok = tok;
+static int
+remove_watchpoint (struct bp_location *bl)
+{
+ struct watchpoint *w = (struct watchpoint *) bl->owner;
+ int length = w->exact ? 1 : bl->length;
- while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
- end_tok++;
+ return target_remove_watchpoint (bl->address, length, bl->watchpoint_type,
+ w->cond_exp);
+}
- toklen = end_tok - tok;
- if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
- {
- struct expression *cond;
+static int
+breakpoint_hit_watchpoint (const struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR bp_addr)
+{
+ struct breakpoint *b = bl->owner;
+ struct watchpoint *w = (struct watchpoint *) b;
- innermost_block = NULL;
- tok = cond_start = end_tok + 1;
- cond = parse_exp_1 (&tok, 0, 0);
+ /* Continuable hardware watchpoints are treated as non-existent if the
+ reason we stopped wasn't a hardware watchpoint (we didn't stop on
+ some data address). Otherwise gdb won't stop on a break instruction
+ in the code (not from a breakpoint) when a hardware watchpoint has
+ been defined. Also skip watchpoints which we know did not trigger
+ (did not match the data address). */
+ if (is_hardware_watchpoint (b)
+ && w->watchpoint_triggered == watch_triggered_no)
+ return 0;
- /* The watchpoint expression may not be local, but the condition
- may still be. E.g.: `watch global if local > 0'. */
- cond_exp_valid_block = innermost_block;
+ return 1;
+}
- xfree (cond);
- cond_end = tok;
- }
- if (*tok)
- error (_("Junk at end of command."));
+static void
+check_status_watchpoint (bpstat bs)
+{
+ gdb_assert (is_watchpoint (bs->breakpoint_at));
- if (accessflag == hw_read)
- bp_type = bp_read_watchpoint;
- else if (accessflag == hw_access)
- bp_type = bp_access_watchpoint;
- else
- bp_type = bp_hardware_watchpoint;
+ bpstat_check_watchpoint (bs);
+}
- 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 support this type of hardware watchpoint."));
+/* Implement the "resources_needed" breakpoint_ops method for
+ hardware watchpoints. */
- if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint)
- error (_("Target can only support one kind of HW watchpoint at a time."));
- }
+static int
+resources_needed_watchpoint (const struct bp_location *bl)
+{
+ struct watchpoint *w = (struct watchpoint *) bl->owner;
+ int length = w->exact? 1 : bl->length;
- /* Change the type of breakpoint to an ordinary watchpoint if a hardware
- watchpoint could not be set. */
- if (!mem_cnt || target_resources_ok <= 0)
- bp_type = bp_watchpoint;
+ return target_region_ok_for_hw_watchpoint (bl->address, length);
+}
- frame = block_innermost_frame (exp_valid_block);
+/* Implement the "works_in_software_mode" breakpoint_ops method for
+ hardware watchpoints. */
- /* 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. Create the scope breakpoint before the watchpoint, so
- that we will encounter it first in bpstat_stop_status. */
- if (exp_valid_block && frame)
- {
- if (frame_id_p (frame_unwind_caller_id (frame)))
- {
- scope_breakpoint
- = create_internal_breakpoint (frame_unwind_caller_arch (frame),
- frame_unwind_caller_pc (frame),
- bp_watchpoint_scope);
+static int
+works_in_software_mode_watchpoint (const struct breakpoint *b)
+{
+ /* Read and access watchpoints only work with hardware support. */
+ return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint;
+}
- scope_breakpoint->enable_state = bp_enabled;
+static enum print_stop_action
+print_it_watchpoint (bpstat bs)
+{
+ struct cleanup *old_chain;
+ struct breakpoint *b;
+ const struct bp_location *bl;
+ struct ui_stream *stb;
+ enum print_stop_action result;
+ struct watchpoint *w;
+ struct ui_out *uiout = current_uiout;
- /* Automatically delete the breakpoint when it hits. */
- scope_breakpoint->disposition = disp_del;
+ gdb_assert (bs->bp_location_at != NULL);
- /* Only break in the proper frame (help with recursion). */
- scope_breakpoint->frame_id = frame_unwind_caller_id (frame);
+ bl = bs->bp_location_at;
+ b = bs->breakpoint_at;
+ w = (struct watchpoint *) b;
- /* Set the address at which we will stop. */
- scope_breakpoint->loc->gdbarch
- = frame_unwind_caller_arch (frame);
- scope_breakpoint->loc->requested_address
- = frame_unwind_caller_pc (frame);
- scope_breakpoint->loc->address
- = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch,
- scope_breakpoint->loc->requested_address,
- scope_breakpoint->type);
- }
- }
+ stb = ui_out_stream_new (uiout);
+ old_chain = make_cleanup_ui_out_stream_delete (stb);
- /* Now set up the breakpoint. */
- b = set_raw_breakpoint_without_location (NULL, bp_type);
- set_breakpoint_number (internal, b);
- b->thread = thread;
- b->disposition = disp_donttouch;
- b->exp = exp;
- b->exp_valid_block = exp_valid_block;
- b->cond_exp_valid_block = cond_exp_valid_block;
- if (just_location)
+ switch (b->type)
{
- struct type *t = value_type (val);
- CORE_ADDR addr = value_as_address (val);
- char *name;
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ annotate_watchpoint (b->number);
+ if (ui_out_is_mi_like_p (uiout))
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER));
+ mention (b);
+ make_cleanup_ui_out_tuple_begin_end (uiout, "value");
+ ui_out_text (uiout, "\nOld value = ");
+ watchpoint_value_print (bs->old_val, stb->stream);
+ ui_out_field_stream (uiout, "old", stb);
+ ui_out_text (uiout, "\nNew value = ");
+ watchpoint_value_print (w->val, stb->stream);
+ ui_out_field_stream (uiout, "new", stb);
+ ui_out_text (uiout, "\n");
+ /* More than one watchpoint may have been triggered. */
+ result = PRINT_UNKNOWN;
+ break;
- t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t)));
- name = type_to_string (t);
+ case bp_read_watchpoint:
+ if (ui_out_is_mi_like_p (uiout))
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER));
+ mention (b);
+ make_cleanup_ui_out_tuple_begin_end (uiout, "value");
+ ui_out_text (uiout, "\nValue = ");
+ watchpoint_value_print (w->val, stb->stream);
+ ui_out_field_stream (uiout, "value", stb);
+ ui_out_text (uiout, "\n");
+ result = PRINT_UNKNOWN;
+ break;
- b->exp_string_reparse = xstrprintf ("* (%s *) %s", name,
- core_addr_to_string (addr));
- xfree (name);
+ case bp_access_watchpoint:
+ if (bs->old_val != NULL)
+ {
+ annotate_watchpoint (b->number);
+ if (ui_out_is_mi_like_p (uiout))
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
+ mention (b);
+ make_cleanup_ui_out_tuple_begin_end (uiout, "value");
+ ui_out_text (uiout, "\nOld value = ");
+ watchpoint_value_print (bs->old_val, stb->stream);
+ ui_out_field_stream (uiout, "old", stb);
+ ui_out_text (uiout, "\nNew value = ");
+ }
+ else
+ {
+ mention (b);
+ if (ui_out_is_mi_like_p (uiout))
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
+ make_cleanup_ui_out_tuple_begin_end (uiout, "value");
+ ui_out_text (uiout, "\nValue = ");
+ }
+ watchpoint_value_print (w->val, stb->stream);
+ ui_out_field_stream (uiout, "new", stb);
+ ui_out_text (uiout, "\n");
+ result = PRINT_UNKNOWN;
+ break;
+ default:
+ result = PRINT_UNKNOWN;
+ }
- b->exp_string = xstrprintf ("-location: %.*s",
- (int) (exp_end - exp_start), exp_start);
+ do_cleanups (old_chain);
+ return result;
+}
- /* The above expression is in C. */
- b->language = language_c;
- }
- else
- b->exp_string = savestring (exp_start, exp_end - exp_start);
- b->val = val;
- b->val_valid = 1;
- if (cond_start)
- b->cond_string = savestring (cond_start, cond_end - cond_start);
- else
- b->cond_string = 0;
+/* Implement the "print_mention" breakpoint_ops method for hardware
+ watchpoints. */
- if (frame)
- {
- b->watchpoint_frame = get_frame_id (frame);
- b->watchpoint_thread = inferior_ptid;
- }
- else
- {
- b->watchpoint_frame = null_frame_id;
- b->watchpoint_thread = null_ptid;
- }
+static void
+print_mention_watchpoint (struct breakpoint *b)
+{
+ struct cleanup *ui_out_chain;
+ struct watchpoint *w = (struct watchpoint *) b;
+ struct ui_out *uiout = current_uiout;
- if (scope_breakpoint != NULL)
+ switch (b->type)
{
- /* The scope breakpoint is related to the watchpoint. We will
- need to act on them together. */
- b->related_breakpoint = scope_breakpoint;
- scope_breakpoint->related_breakpoint = b;
+ case bp_watchpoint:
+ ui_out_text (uiout, "Watchpoint ");
+ ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
+ break;
+ case bp_hardware_watchpoint:
+ ui_out_text (uiout, "Hardware watchpoint ");
+ ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
+ break;
+ case bp_read_watchpoint:
+ ui_out_text (uiout, "Hardware read watchpoint ");
+ ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt");
+ break;
+ case bp_access_watchpoint:
+ ui_out_text (uiout, "Hardware access (read/write) watchpoint ");
+ ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt");
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("Invalid hardware watchpoint type."));
}
- if (!just_location)
- value_free_to_mark (mark);
+ ui_out_field_int (uiout, "number", b->number);
+ ui_out_text (uiout, ": ");
+ ui_out_field_string (uiout, "exp", w->exp_string);
+ do_cleanups (ui_out_chain);
+}
- /* Finally update the new watchpoint. This creates the locations
- that should be inserted. */
- update_watchpoint (b, 1);
- if (internal)
- /* Do not mention breakpoints with a negative number, but do
- notify observers. */
- observer_notify_breakpoint_created (b->number);
- else
- mention (b);
- update_global_location_list (1);
-}
-
-/* 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. */
+/* Implement the "print_recreate" breakpoint_ops method for
+ watchpoints. */
-static int
-can_use_hardware_watchpoint (struct value *v)
+static void
+print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp)
{
- int found_memory_cnt = 0;
- struct value *head = v;
+ struct watchpoint *w = (struct watchpoint *) b;
- /* Did the user specifically forbid us to use hardware watchpoints? */
- if (!can_use_hw_watchpoints)
- return 0;
+ switch (b->type)
+ {
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ fprintf_unfiltered (fp, "watch");
+ break;
+ case bp_read_watchpoint:
+ fprintf_unfiltered (fp, "rwatch");
+ break;
+ case bp_access_watchpoint:
+ fprintf_unfiltered (fp, "awatch");
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("Invalid watchpoint type."));
+ }
- /* Make sure that the value of the expression depends only upon
- memory contents, and values computed from them within GDB. If we
- find any register references or function calls, we can't use a
- hardware watchpoint.
+ fprintf_unfiltered (fp, " %s", w->exp_string);
+ print_recreate_thread (b, fp);
+}
- The idea here is that evaluating an expression generates a series
- of values, one holding the value of every subexpression. (The
- expression a*b+c has five subexpressions: a, b, a*b, c, and
- a*b+c.) GDB's values hold almost enough information to establish
- the criteria given above --- they identify memory lvalues,
- register lvalues, computed values, etcetera. So we can evaluate
- the expression, and then scan the chain of values that leaves
- behind to decide whether we can detect any possible change to the
- expression's final value using only hardware watchpoints.
+/* The breakpoint_ops structure to be used in hardware watchpoints. */
- However, I don't think that the values returned by inferior
- function calls are special in any way. So this function may not
- notice that an expression involving an inferior function call
- can't be watched with hardware watchpoints. FIXME. */
- for (; v; v = value_next (v))
- {
- if (VALUE_LVAL (v) == lval_memory)
- {
- if (v != head && value_lazy (v))
- /* A lazy memory lvalue in the chain is one that GDB never
- needed to fetch; we either just used its address (e.g.,
- `a' in `a.b') or we never needed it at all (e.g., `a'
- in `a,b'). This doesn't apply to HEAD; if that is
- lazy then it was not readable, but watch it anyway. */
- ;
- else
- {
- /* Ahh, memory we actually used! Check if we can cover
- it with hardware watchpoints. */
- struct type *vtype = check_typedef (value_type (v));
+static struct breakpoint_ops watchpoint_breakpoint_ops;
- /* We only watch structs and arrays if user asked for it
- explicitly, never if they just happen to appear in a
- middle of some value chain. */
- if (v == head
- || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
- && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
- {
- CORE_ADDR vaddr = value_address (v);
- int len = TYPE_LENGTH (value_type (v));
+/* Implement the "insert" breakpoint_ops method for
+ masked hardware watchpoints. */
- if (!target_region_ok_for_hw_watchpoint (vaddr, len))
- return 0;
- else
- found_memory_cnt++;
- }
- }
- }
- else if (VALUE_LVAL (v) != not_lval
- && deprecated_value_modifiable (v) == 0)
- return 0; /* These are values from the history (e.g., $1). */
- else if (VALUE_LVAL (v) == lval_register)
- return 0; /* Cannot watch a register with a HW watchpoint. */
- }
+static int
+insert_masked_watchpoint (struct bp_location *bl)
+{
+ struct watchpoint *w = (struct watchpoint *) bl->owner;
- /* The expression itself looks suitable for using a hardware
- watchpoint, but give the target machine a chance to reject it. */
- return found_memory_cnt;
+ return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask,
+ bl->watchpoint_type);
}
-void
-watch_command_wrapper (char *arg, int from_tty, int internal)
+/* Implement the "remove" breakpoint_ops method for
+ masked hardware watchpoints. */
+
+static int
+remove_masked_watchpoint (struct bp_location *bl)
{
- watch_command_1 (arg, hw_write, from_tty, 0, internal);
+ struct watchpoint *w = (struct watchpoint *) bl->owner;
+
+ return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask,
+ bl->watchpoint_type);
}
-/* A helper function that looks for an argument at the start of a
- string. The argument must also either be at the end of the string,
- or be followed by whitespace. Returns 1 if it finds the argument,
- 0 otherwise. If the argument is found, it updates *STR. */
+/* Implement the "resources_needed" breakpoint_ops method for
+ masked hardware watchpoints. */
static int
-check_for_argument (char **str, char *arg, int arg_len)
+resources_needed_masked_watchpoint (const struct bp_location *bl)
+{
+ struct watchpoint *w = (struct watchpoint *) bl->owner;
+
+ return target_masked_watch_num_registers (bl->address, w->hw_wp_mask);
+}
+
+/* Implement the "works_in_software_mode" breakpoint_ops method for
+ masked hardware watchpoints. */
+
+static int
+works_in_software_mode_masked_watchpoint (const struct breakpoint *b)
{
- if (strncmp (*str, arg, arg_len) == 0
- && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len])))
- {
- *str += arg_len;
- return 1;
- }
return 0;
}
-/* A helper function that looks for the "-location" argument and then
- calls watch_command_1. */
+/* Implement the "print_it" breakpoint_ops method for
+ masked hardware watchpoints. */
-static void
-watch_maybe_just_location (char *arg, int accessflag, int from_tty)
+static enum print_stop_action
+print_it_masked_watchpoint (bpstat bs)
{
- int just_location = 0;
+ struct breakpoint *b = bs->breakpoint_at;
+ struct ui_out *uiout = current_uiout;
- if (arg
- && (check_for_argument (&arg, "-location", sizeof ("-location") - 1)
- || check_for_argument (&arg, "-l", sizeof ("-l") - 1)))
+ /* Masked watchpoints have only one location. */
+ gdb_assert (b->loc && b->loc->next == NULL);
+
+ switch (b->type)
{
- ep_skip_leading_whitespace (&arg);
- just_location = 1;
+ case bp_hardware_watchpoint:
+ annotate_watchpoint (b->number);
+ if (ui_out_is_mi_like_p (uiout))
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER));
+ break;
+
+ case bp_read_watchpoint:
+ if (ui_out_is_mi_like_p (uiout))
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER));
+ break;
+
+ case bp_access_watchpoint:
+ if (ui_out_is_mi_like_p (uiout))
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("Invalid hardware watchpoint type."));
}
- watch_command_1 (arg, accessflag, from_tty, just_location, 0);
+ mention (b);
+ ui_out_text (uiout, _("\n\
+Check the underlying instruction at PC for the memory\n\
+address and value which triggered this watchpoint.\n"));
+ ui_out_text (uiout, "\n");
+
+ /* More than one watchpoint may have been triggered. */
+ return PRINT_UNKNOWN;
}
+/* Implement the "print_one_detail" breakpoint_ops method for
+ masked hardware watchpoints. */
+
static void
-watch_command (char *arg, int from_tty)
+print_one_detail_masked_watchpoint (const struct breakpoint *b,
+ struct ui_out *uiout)
{
- watch_maybe_just_location (arg, hw_write, from_tty);
-}
+ struct watchpoint *w = (struct watchpoint *) b;
-void
-rwatch_command_wrapper (char *arg, int from_tty, int internal)
-{
- watch_command_1 (arg, hw_read, from_tty, 0, internal);
+ /* Masked watchpoints have only one location. */
+ gdb_assert (b->loc && b->loc->next == NULL);
+
+ ui_out_text (uiout, "\tmask ");
+ ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask);
+ ui_out_text (uiout, "\n");
}
+/* Implement the "print_mention" breakpoint_ops method for
+ masked hardware watchpoints. */
+
static void
-rwatch_command (char *arg, int from_tty)
+print_mention_masked_watchpoint (struct breakpoint *b)
{
- watch_maybe_just_location (arg, hw_read, from_tty);
-}
+ struct watchpoint *w = (struct watchpoint *) b;
+ struct ui_out *uiout = current_uiout;
+ struct cleanup *ui_out_chain;
-void
-awatch_command_wrapper (char *arg, int from_tty, int internal)
-{
- watch_command_1 (arg, hw_access, from_tty, 0, internal);
+ switch (b->type)
+ {
+ case bp_hardware_watchpoint:
+ ui_out_text (uiout, "Masked hardware watchpoint ");
+ ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
+ break;
+ case bp_read_watchpoint:
+ ui_out_text (uiout, "Masked hardware read watchpoint ");
+ ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt");
+ break;
+ case bp_access_watchpoint:
+ ui_out_text (uiout, "Masked hardware access (read/write) watchpoint ");
+ ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt");
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("Invalid hardware watchpoint type."));
+ }
+
+ ui_out_field_int (uiout, "number", b->number);
+ ui_out_text (uiout, ": ");
+ ui_out_field_string (uiout, "exp", w->exp_string);
+ do_cleanups (ui_out_chain);
}
+/* Implement the "print_recreate" breakpoint_ops method for
+ masked hardware watchpoints. */
+
static void
-awatch_command (char *arg, int from_tty)
+print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp)
{
- watch_maybe_just_location (arg, hw_access, from_tty);
+ struct watchpoint *w = (struct watchpoint *) b;
+ char tmp[40];
+
+ switch (b->type)
+ {
+ case bp_hardware_watchpoint:
+ fprintf_unfiltered (fp, "watch");
+ break;
+ case bp_read_watchpoint:
+ fprintf_unfiltered (fp, "rwatch");
+ break;
+ case bp_access_watchpoint:
+ fprintf_unfiltered (fp, "awatch");
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("Invalid hardware watchpoint type."));
+ }
+
+ sprintf_vma (tmp, w->hw_wp_mask);
+ fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp);
+ print_recreate_thread (b, fp);
}
-\f
-/* Helper routines for the until_command routine in infcmd.c. Here
- because it uses the mechanisms of breakpoints. */
+/* The breakpoint_ops structure to be used in masked hardware watchpoints. */
-struct until_break_command_continuation_args
+static struct breakpoint_ops masked_watchpoint_breakpoint_ops;
+
+/* Tell whether the given watchpoint is a masked hardware watchpoint. */
+
+static int
+is_masked_watchpoint (const struct breakpoint *b)
{
- struct breakpoint *breakpoint;
- struct breakpoint *breakpoint2;
- int thread_num;
-};
+ return b->ops == &masked_watchpoint_breakpoint_ops;
+}
-/* This function is called by fetch_inferior_event via the
- cmd_continuation pointer, to complete the until command. It takes
- care of cleaning up the temporary breakpoints set up by the until
- command. */
+/* accessflag: hw_write: watch write,
+ hw_read: watch read,
+ hw_access: watch access (read or write) */
static void
-until_break_command_continuation (void *arg)
+watch_command_1 (char *arg, int accessflag, int from_tty,
+ int just_location, int internal)
{
- struct until_break_command_continuation_args *a = arg;
+ volatile struct gdb_exception e;
+ struct breakpoint *b, *scope_breakpoint = NULL;
+ struct expression *exp;
+ struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL;
+ struct value *val, *mark, *result;
+ struct frame_info *frame;
+ char *exp_start = NULL;
+ char *exp_end = NULL;
+ char *tok, *end_tok;
+ int toklen = -1;
+ char *cond_start = NULL;
+ char *cond_end = NULL;
+ enum bptype bp_type;
+ int thread = -1;
+ int pc = 0;
+ /* Flag to indicate whether we are going to use masks for
+ the hardware watchpoint. */
+ int use_mask = 0;
+ CORE_ADDR mask = 0;
+ struct watchpoint *w;
- delete_breakpoint (a->breakpoint);
- if (a->breakpoint2)
- delete_breakpoint (a->breakpoint2);
- delete_longjmp_breakpoint (a->thread_num);
-}
+ /* Make sure that we actually have parameters to parse. */
+ if (arg != NULL && arg[0] != '\0')
+ {
+ char *value_start;
-void
-until_break_command (char *arg, int from_tty, int anywhere)
-{
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- struct frame_info *frame = get_selected_frame (NULL);
- struct breakpoint *breakpoint;
- struct breakpoint *breakpoint2 = NULL;
- struct cleanup *old_chain;
- int thread;
- struct thread_info *tp;
+ /* Look for "parameter value" pairs at the end
+ of the arguments string. */
+ for (tok = arg + strlen (arg) - 1; tok > arg; tok--)
+ {
+ /* Skip whitespace at the end of the argument list. */
+ while (tok > arg && (*tok == ' ' || *tok == '\t'))
+ tok--;
+
+ /* Find the beginning of the last token.
+ This is the value of the parameter. */
+ while (tok > arg && (*tok != ' ' && *tok != '\t'))
+ tok--;
+ value_start = tok + 1;
+
+ /* Skip whitespace. */
+ while (tok > arg && (*tok == ' ' || *tok == '\t'))
+ tok--;
+
+ end_tok = tok;
+
+ /* Find the beginning of the second to last token.
+ This is the parameter itself. */
+ while (tok > arg && (*tok != ' ' && *tok != '\t'))
+ tok--;
+ tok++;
+ toklen = end_tok - tok + 1;
+
+ if (toklen == 6 && !strncmp (tok, "thread", 6))
+ {
+ /* At this point we've found a "thread" token, which means
+ the user is trying to set a watchpoint that triggers
+ only in a specific thread. */
+ char *endp;
- clear_proceed_status ();
+ if (thread != -1)
+ error(_("You can specify only one thread."));
- /* Set a breakpoint where the user wants it and at return from
- this function */
+ /* Extract the thread ID from the next token. */
+ thread = strtol (value_start, &endp, 0);
- if (default_breakpoint_valid)
- sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
- default_breakpoint_line, (char ***) NULL, NULL);
- else
- sals = decode_line_1 (&arg, 1, (struct symtab *) NULL,
- 0, (char ***) NULL, NULL);
+ /* Check if the user provided a valid numeric value for the
+ thread ID. */
+ if (*endp != ' ' && *endp != '\t' && *endp != '\0')
+ error (_("Invalid thread ID specification %s."), value_start);
- if (sals.nelts != 1)
- error (_("Couldn't get information on specified line."));
+ /* Check if the thread actually exists. */
+ if (!valid_thread_id (thread))
+ error (_("Unknown thread %d."), thread);
+ }
+ else if (toklen == 4 && !strncmp (tok, "mask", 4))
+ {
+ /* We've found a "mask" token, which means the user wants to
+ create a hardware watchpoint that is going to have the mask
+ facility. */
+ struct value *mask_value, *mark;
- sal = sals.sals[0];
- xfree (sals.sals); /* malloc'd, so freed */
+ if (use_mask)
+ error(_("You can specify only one mask."));
- if (*arg)
- error (_("Junk at end of arguments."));
+ use_mask = just_location = 1;
- resolve_sal_pc (&sal);
-
- if (anywhere)
- /* If the user told us to continue until a specified location,
- we don't specify a frame at which we need to stop. */
- breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal,
- null_frame_id, bp_until);
- else
- /* Otherwise, specify the selected frame, because we want to stop only
- at the very same frame. */
- breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal,
- get_stack_frame_id (frame),
- bp_until);
-
- old_chain = make_cleanup_delete_breakpoint (breakpoint);
+ mark = value_mark ();
+ mask_value = parse_to_comma_and_eval (&value_start);
+ mask = value_as_address (mask_value);
+ value_free_to_mark (mark);
+ }
+ else
+ /* We didn't recognize what we found. We should stop here. */
+ break;
- tp = inferior_thread ();
- thread = tp->num;
+ /* Truncate the string and get rid of the "parameter value" pair before
+ the arguments string is parsed by the parse_exp_1 function. */
+ *tok = '\0';
+ }
+ }
- /* Keep within the current frame, or in frames called by the current
- one. */
+ /* Parse the rest of the arguments. */
+ innermost_block = NULL;
+ exp_start = arg;
+ exp = parse_exp_1 (&arg, 0, 0);
+ exp_end = arg;
+ /* Remove trailing whitespace from the expression before saving it.
+ This makes the eventual display of the expression string a bit
+ prettier. */
+ while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t'))
+ --exp_end;
- if (frame_id_p (frame_unwind_caller_id (frame)))
+ /* Checking if the expression is not constant. */
+ if (watchpoint_exp_is_const (exp))
{
- sal = find_pc_line (frame_unwind_caller_pc (frame), 0);
- sal.pc = frame_unwind_caller_pc (frame);
- breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame),
- sal,
- frame_unwind_caller_id (frame),
- bp_until);
- make_cleanup_delete_breakpoint (breakpoint2);
+ int len;
- set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame));
- make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
+ len = exp_end - exp_start;
+ while (len > 0 && isspace (exp_start[len - 1]))
+ len--;
+ error (_("Cannot watch constant value `%.*s'."), len, exp_start);
}
- proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
-
- /* If we are running asynchronously, and proceed call above has actually
- managed to start the target, arrange for breakpoints to be
- deleted when the target stops. Otherwise, we're already stopped and
- delete breakpoints via cleanup chain. */
+ exp_valid_block = innermost_block;
+ mark = value_mark ();
+ fetch_subexp_value (exp, &pc, &val, &result, NULL);
- if (target_can_async_p () && is_running (inferior_ptid))
+ if (just_location)
{
- struct until_break_command_continuation_args *args;
- args = xmalloc (sizeof (*args));
+ int ret;
- args->breakpoint = breakpoint;
- args->breakpoint2 = breakpoint2;
- args->thread_num = thread;
+ exp_valid_block = NULL;
+ val = value_addr (result);
+ release_value (val);
+ value_free_to_mark (mark);
- discard_cleanups (old_chain);
- add_continuation (inferior_thread (),
- until_break_command_continuation, args,
- xfree);
+ if (use_mask)
+ {
+ ret = target_masked_watch_num_registers (value_as_address (val),
+ mask);
+ if (ret == -1)
+ error (_("This target does not support masked watchpoints."));
+ else if (ret == -2)
+ error (_("Invalid mask or memory region."));
+ }
}
- else
- do_cleanups (old_chain);
-}
+ else if (val != NULL)
+ release_value (val);
-static void
-ep_skip_leading_whitespace (char **s)
-{
- if ((s == NULL) || (*s == NULL))
- return;
- while (isspace (**s))
- *s += 1;
-}
+ tok = skip_spaces (arg);
+ end_tok = skip_to_space (tok);
-/* This function attempts to parse an optional "if <cond>" clause
- from the arg string. If one is not found, it returns NULL.
+ toklen = end_tok - tok;
+ if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
+ {
+ struct expression *cond;
- 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. */
+ innermost_block = NULL;
+ tok = cond_start = end_tok + 1;
+ cond = parse_exp_1 (&tok, 0, 0);
-static char *
-ep_parse_optional_if_clause (char **arg)
-{
- char *cond_string;
+ /* The watchpoint expression may not be local, but the condition
+ may still be. E.g.: `watch global if local > 0'. */
+ cond_exp_valid_block = innermost_block;
- if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2]))
- return NULL;
+ xfree (cond);
+ cond_end = tok;
+ }
+ if (*tok)
+ error (_("Junk at end of command."));
- /* Skip the "if" keyword. */
- (*arg) += 2;
+ if (accessflag == hw_read)
+ bp_type = bp_read_watchpoint;
+ else if (accessflag == hw_access)
+ bp_type = bp_access_watchpoint;
+ else
+ bp_type = bp_hardware_watchpoint;
- /* Skip any extra leading whitespace, and record the start of the
- condition string. */
- ep_skip_leading_whitespace (arg);
- cond_string = *arg;
+ frame = block_innermost_frame (exp_valid_block);
- /* Assume that the condition occupies the remainder of the arg string. */
- (*arg) += strlen (cond_string);
+ /* 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. Create the scope breakpoint before the watchpoint, so
+ that we will encounter it first in bpstat_stop_status. */
+ if (exp_valid_block && frame)
+ {
+ if (frame_id_p (frame_unwind_caller_id (frame)))
+ {
+ scope_breakpoint
+ = create_internal_breakpoint (frame_unwind_caller_arch (frame),
+ frame_unwind_caller_pc (frame),
+ bp_watchpoint_scope,
+ &momentary_breakpoint_ops);
- return cond_string;
-}
+ scope_breakpoint->enable_state = bp_enabled;
-/* Commands to deal with catching events, such as signals, exceptions,
- process start/exit, etc. */
+ /* Automatically delete the breakpoint when it hits. */
+ scope_breakpoint->disposition = disp_del;
-typedef enum
-{
- catch_fork_temporary, catch_vfork_temporary,
- catch_fork_permanent, catch_vfork_permanent
-}
-catch_fork_kind;
+ /* Only break in the proper frame (help with recursion). */
+ scope_breakpoint->frame_id = frame_unwind_caller_id (frame);
-static void
-catch_fork_command_1 (char *arg, int from_tty,
- struct cmd_list_element *command)
-{
- struct gdbarch *gdbarch = get_current_arch ();
- char *cond_string = NULL;
- catch_fork_kind fork_kind;
- int tempflag;
+ /* Set the address at which we will stop. */
+ scope_breakpoint->loc->gdbarch
+ = frame_unwind_caller_arch (frame);
+ scope_breakpoint->loc->requested_address
+ = frame_unwind_caller_pc (frame);
+ scope_breakpoint->loc->address
+ = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch,
+ scope_breakpoint->loc->requested_address,
+ scope_breakpoint->type);
+ }
+ }
- fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command);
- tempflag = (fork_kind == catch_fork_temporary
- || fork_kind == catch_vfork_temporary);
+ /* Now set up the breakpoint. */
- if (!arg)
- arg = "";
- ep_skip_leading_whitespace (&arg);
+ w = XCNEW (struct watchpoint);
+ b = &w->base;
+ if (use_mask)
+ init_raw_breakpoint_without_location (b, NULL, bp_type,
+ &masked_watchpoint_breakpoint_ops);
+ else
+ init_raw_breakpoint_without_location (b, NULL, bp_type,
+ &watchpoint_breakpoint_ops);
+ b->thread = thread;
+ b->disposition = disp_donttouch;
+ b->pspace = current_program_space;
+ w->exp = exp;
+ w->exp_valid_block = exp_valid_block;
+ w->cond_exp_valid_block = cond_exp_valid_block;
+ if (just_location)
+ {
+ struct type *t = value_type (val);
+ CORE_ADDR addr = value_as_address (val);
+ char *name;
- /* The allowed syntax is:
- catch [v]fork
- catch [v]fork if <cond>
+ t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t)));
+ name = type_to_string (t);
- First, check if there's an if clause. */
- cond_string = ep_parse_optional_if_clause (&arg);
+ w->exp_string_reparse = xstrprintf ("* (%s *) %s", name,
+ core_addr_to_string (addr));
+ xfree (name);
- if ((*arg != '\0') && !isspace (*arg))
- error (_("Junk at end of arguments."));
+ w->exp_string = xstrprintf ("-location %.*s",
+ (int) (exp_end - exp_start), exp_start);
- /* If this target supports it, create a fork or vfork catchpoint
- and enable reporting of such events. */
- switch (fork_kind)
- {
- case catch_fork_temporary:
- case catch_fork_permanent:
- create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string,
- &catch_fork_breakpoint_ops);
- break;
- case catch_vfork_temporary:
- case catch_vfork_permanent:
- create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string,
- &catch_vfork_breakpoint_ops);
- break;
- default:
- error (_("unsupported or unknown fork kind; cannot catch it"));
- break;
+ /* The above expression is in C. */
+ b->language = language_c;
}
-}
+ else
+ w->exp_string = savestring (exp_start, exp_end - exp_start);
-static void
-catch_exec_command_1 (char *arg, int from_tty,
- struct cmd_list_element *command)
-{
- struct gdbarch *gdbarch = get_current_arch ();
- int tempflag;
- char *cond_string = NULL;
+ if (use_mask)
+ {
+ w->hw_wp_mask = mask;
+ }
+ else
+ {
+ w->val = val;
+ w->val_valid = 1;
+ }
- tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
+ if (cond_start)
+ b->cond_string = savestring (cond_start, cond_end - cond_start);
+ else
+ b->cond_string = 0;
- if (!arg)
- arg = "";
- ep_skip_leading_whitespace (&arg);
+ if (frame)
+ {
+ w->watchpoint_frame = get_frame_id (frame);
+ w->watchpoint_thread = inferior_ptid;
+ }
+ else
+ {
+ w->watchpoint_frame = null_frame_id;
+ w->watchpoint_thread = null_ptid;
+ }
- /* The allowed syntax is:
- catch exec
- catch exec if <cond>
+ if (scope_breakpoint != NULL)
+ {
+ /* The scope breakpoint is related to the watchpoint. We will
+ need to act on them together. */
+ b->related_breakpoint = scope_breakpoint;
+ scope_breakpoint->related_breakpoint = b;
+ }
- First, check if there's an if clause. */
- cond_string = ep_parse_optional_if_clause (&arg);
+ if (!just_location)
+ value_free_to_mark (mark);
- if ((*arg != '\0') && !isspace (*arg))
- error (_("Junk at end of arguments."));
+ TRY_CATCH (e, RETURN_MASK_ALL)
+ {
+ /* Finally update the new watchpoint. This creates the locations
+ that should be inserted. */
+ update_watchpoint (w, 1);
+ }
+ if (e.reason < 0)
+ {
+ delete_breakpoint (b);
+ throw_exception (e);
+ }
- /* If this target supports it, create an exec catchpoint
- and enable reporting of such events. */
- create_catchpoint (gdbarch, tempflag, cond_string,
- &catch_exec_breakpoint_ops);
+ install_breakpoint (internal, b);
}
-static enum print_stop_action
-print_exception_catchpoint (struct breakpoint *b)
-{
- int bp_temp, bp_throw;
+/* Return count of debug registers needed to watch the given expression.
+ If the watchpoint cannot be handled in hardware return zero. */
- annotate_catchpoint (b->number);
+static int
+can_use_hardware_watchpoint (struct value *v)
+{
+ int found_memory_cnt = 0;
+ struct value *head = v;
- bp_throw = strstr (b->addr_string, "throw") != NULL;
- if (b->loc->address != b->loc->requested_address)
- breakpoint_adjustment_warning (b->loc->requested_address,
- b->loc->address,
- b->number, 1);
- bp_temp = b->disposition == disp_del;
- ui_out_text (uiout,
- bp_temp ? "Temporary catchpoint "
- : "Catchpoint ");
- if (!ui_out_is_mi_like_p (uiout))
- ui_out_field_int (uiout, "bkptno", b->number);
- ui_out_text (uiout,
- bp_throw ? " (exception thrown), "
- : " (exception caught), ");
- if (ui_out_is_mi_like_p (uiout))
+ /* Did the user specifically forbid us to use hardware watchpoints? */
+ if (!can_use_hw_watchpoints)
+ return 0;
+
+ /* Make sure that the value of the expression depends only upon
+ memory contents, and values computed from them within GDB. If we
+ find any register references or function calls, we can't use a
+ hardware watchpoint.
+
+ The idea here is that evaluating an expression generates a series
+ of values, one holding the value of every subexpression. (The
+ expression a*b+c has five subexpressions: a, b, a*b, c, and
+ a*b+c.) GDB's values hold almost enough information to establish
+ the criteria given above --- they identify memory lvalues,
+ register lvalues, computed values, etcetera. So we can evaluate
+ the expression, and then scan the chain of values that leaves
+ behind to decide whether we can detect any possible change to the
+ expression's final value using only hardware watchpoints.
+
+ However, I don't think that the values returned by inferior
+ function calls are special in any way. So this function may not
+ notice that an expression involving an inferior function call
+ can't be watched with hardware watchpoints. FIXME. */
+ for (; v; v = value_next (v))
{
- ui_out_field_string (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
- ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
- ui_out_field_int (uiout, "bkptno", b->number);
+ if (VALUE_LVAL (v) == lval_memory)
+ {
+ if (v != head && value_lazy (v))
+ /* A lazy memory lvalue in the chain is one that GDB never
+ needed to fetch; we either just used its address (e.g.,
+ `a' in `a.b') or we never needed it at all (e.g., `a'
+ in `a,b'). This doesn't apply to HEAD; if that is
+ lazy then it was not readable, but watch it anyway. */
+ ;
+ else
+ {
+ /* Ahh, memory we actually used! Check if we can cover
+ it with hardware watchpoints. */
+ struct type *vtype = check_typedef (value_type (v));
+
+ /* We only watch structs and arrays if user asked for it
+ explicitly, never if they just happen to appear in a
+ middle of some value chain. */
+ if (v == head
+ || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+ && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+ {
+ CORE_ADDR vaddr = value_address (v);
+ int len;
+ int num_regs;
+
+ len = (target_exact_watchpoints
+ && is_scalar_type_recursive (vtype))?
+ 1 : TYPE_LENGTH (value_type (v));
+
+ num_regs = target_region_ok_for_hw_watchpoint (vaddr, len);
+ if (!num_regs)
+ return 0;
+ else
+ found_memory_cnt += num_regs;
+ }
+ }
+ }
+ else if (VALUE_LVAL (v) != not_lval
+ && deprecated_value_modifiable (v) == 0)
+ return 0; /* These are values from the history (e.g., $1). */
+ else if (VALUE_LVAL (v) == lval_register)
+ return 0; /* Cannot watch a register with a HW watchpoint. */
}
- return PRINT_SRC_AND_LOC;
+
+ /* 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
-print_one_exception_catchpoint (struct breakpoint *b,
- struct bp_location **last_loc)
+void
+watch_command_wrapper (char *arg, int from_tty, int internal)
{
- struct value_print_options opts;
+ watch_command_1 (arg, hw_write, from_tty, 0, internal);
+}
- get_user_print_options (&opts);
- if (opts.addressprint)
+/* A helper function that looks for an argument at the start of a
+ string. The argument must also either be at the end of the string,
+ or be followed by whitespace. Returns 1 if it finds the argument,
+ 0 otherwise. If the argument is found, it updates *STR. */
+
+static int
+check_for_argument (char **str, char *arg, int arg_len)
+{
+ if (strncmp (*str, arg, arg_len) == 0
+ && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len])))
{
- annotate_field (4);
- if (b->loc == NULL || b->loc->shlib_disabled)
- ui_out_field_string (uiout, "addr", "<PENDING>");
- else
- ui_out_field_core_addr (uiout, "addr",
- b->loc->gdbarch, b->loc->address);
+ *str += arg_len;
+ return 1;
}
- annotate_field (5);
- if (b->loc)
- *last_loc = b->loc;
- if (strstr (b->addr_string, "throw") != NULL)
- ui_out_field_string (uiout, "what", "exception throw");
- else
- ui_out_field_string (uiout, "what", "exception catch");
+ return 0;
}
+/* A helper function that looks for the "-location" argument and then
+ calls watch_command_1. */
+
static void
-print_mention_exception_catchpoint (struct breakpoint *b)
+watch_maybe_just_location (char *arg, int accessflag, int from_tty)
{
- int bp_temp;
- int bp_throw;
+ int just_location = 0;
- bp_temp = b->disposition == disp_del;
- bp_throw = strstr (b->addr_string, "throw") != NULL;
- ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ")
- : _("Catchpoint "));
- ui_out_field_int (uiout, "bkptno", b->number);
- ui_out_text (uiout, bp_throw ? _(" (throw)")
- : _(" (catch)"));
-}
+ if (arg
+ && (check_for_argument (&arg, "-location", sizeof ("-location") - 1)
+ || check_for_argument (&arg, "-l", sizeof ("-l") - 1)))
+ {
+ arg = skip_spaces (arg);
+ just_location = 1;
+ }
-/* Implement the "print_recreate" breakpoint_ops method for throw and
- catch catchpoints. */
+ watch_command_1 (arg, accessflag, from_tty, just_location, 0);
+}
static void
-print_recreate_exception_catchpoint (struct breakpoint *b, struct ui_file *fp)
+watch_command (char *arg, int from_tty)
{
- int bp_temp;
- int bp_throw;
-
- bp_temp = b->disposition == disp_del;
- bp_throw = strstr (b->addr_string, "throw") != NULL;
- fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch ");
- fprintf_unfiltered (fp, bp_throw ? "throw" : "catch");
+ watch_maybe_just_location (arg, hw_write, from_tty);
}
-static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = {
- NULL, /* insert */
- NULL, /* remove */
- NULL, /* breakpoint_hit */
- print_exception_catchpoint,
- print_one_exception_catchpoint,
- print_mention_exception_catchpoint,
- print_recreate_exception_catchpoint
-};
-
-static int
-handle_gnu_v3_exceptions (int tempflag, char *cond_string,
- enum exception_event_kind ex_event, int from_tty)
+void
+rwatch_command_wrapper (char *arg, int from_tty, int internal)
{
- char *trigger_func_name;
-
- if (ex_event == EX_EVENT_CATCH)
- trigger_func_name = "__cxa_begin_catch";
- else
- trigger_func_name = "__cxa_throw";
-
- create_breakpoint (get_current_arch (),
- trigger_func_name, cond_string, -1,
- 0 /* condition and thread are valid. */,
- tempflag, bp_breakpoint,
- 0,
- AUTO_BOOLEAN_TRUE /* pending */,
- &gnu_v3_exception_catchpoint_ops, from_tty,
- 1 /* enabled */,
- 0 /* internal */);
-
- return 1;
+ watch_command_1 (arg, hw_read, from_tty, 0, internal);
}
-/* Deal with "catch catch" and "catch throw" commands */
-
static void
-catch_exception_command_1 (enum exception_event_kind ex_event, char *arg,
- int tempflag, int from_tty)
+rwatch_command (char *arg, int from_tty)
{
- char *cond_string = NULL;
-
- if (!arg)
- 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."));
-
- if (ex_event != EX_EVENT_THROW
- && ex_event != EX_EVENT_CATCH)
- error (_("Unsupported or unknown exception event; cannot catch it"));
-
- if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty))
- return;
-
- warning (_("Unsupported with this platform/compiler combination."));
+ watch_maybe_just_location (arg, hw_read, from_tty);
}
-/* Implementation of "catch catch" command. */
+void
+awatch_command_wrapper (char *arg, int from_tty, int internal)
+{
+ watch_command_1 (arg, hw_access, from_tty, 0, internal);
+}
static void
-catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command)
+awatch_command (char *arg, int from_tty)
{
- int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
-
- catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty);
+ watch_maybe_just_location (arg, hw_access, from_tty);
}
+\f
-/* Implementation of "catch throw" command. */
+/* Helper routines for the until_command routine in infcmd.c. Here
+ because it uses the mechanisms of breakpoints. */
+
+struct until_break_command_continuation_args
+{
+ struct breakpoint *breakpoint;
+ struct breakpoint *breakpoint2;
+ int thread_num;
+};
+/* This function is called by fetch_inferior_event via the
+ cmd_continuation pointer, to complete the until command. It takes
+ care of cleaning up the temporary breakpoints set up by the until
+ command. */
static void
-catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command)
+until_break_command_continuation (void *arg, int err)
{
- int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
+ struct until_break_command_continuation_args *a = arg;
- catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty);
+ delete_breakpoint (a->breakpoint);
+ if (a->breakpoint2)
+ delete_breakpoint (a->breakpoint2);
+ delete_longjmp_breakpoint (a->thread_num);
}
-/* Create a breakpoint struct for Ada exception catchpoints. */
-
-static void
-create_ada_exception_breakpoint (struct gdbarch *gdbarch,
- struct symtab_and_line sal,
- char *addr_string,
- char *exp_string,
- char *cond_string,
- struct expression *cond,
- struct breakpoint_ops *ops,
- int tempflag,
- int from_tty)
+void
+until_break_command (char *arg, int from_tty, int anywhere)
{
- struct breakpoint *b;
+ struct symtabs_and_lines sals;
+ struct symtab_and_line sal;
+ struct frame_info *frame = get_selected_frame (NULL);
+ struct breakpoint *breakpoint;
+ struct breakpoint *breakpoint2 = NULL;
+ struct cleanup *old_chain;
+ int thread;
+ struct thread_info *tp;
- if (from_tty)
- {
- struct gdbarch *loc_gdbarch = get_sal_arch (sal);
- if (!loc_gdbarch)
- loc_gdbarch = gdbarch;
+ clear_proceed_status ();
- describe_other_breakpoints (loc_gdbarch,
- sal.pspace, sal.pc, sal.section, -1);
- /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
- version for exception catchpoints, because two catchpoints
- used for different exception names will use the same address.
- In this case, a "breakpoint ... also set at..." warning is
- unproductive. Besides. the warning phrasing is also a bit
- inapropriate, we should use the word catchpoint, and tell
- the user what type of catchpoint it is. The above is good
- enough for now, though. */
- }
+ /* Set a breakpoint where the user wants it and at return from
+ this function. */
- b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint);
- set_breakpoint_count (breakpoint_count + 1);
+ if (default_breakpoint_valid)
+ sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
+ default_breakpoint_line, NULL);
+ else
+ sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, NULL);
- b->enable_state = bp_enabled;
- b->disposition = tempflag ? disp_del : disp_donttouch;
- b->number = breakpoint_count;
- b->ignore_count = 0;
- b->loc->cond = cond;
- b->addr_string = addr_string;
- b->language = language_ada;
- b->cond_string = cond_string;
- b->exp_string = exp_string;
- b->thread = -1;
- b->ops = ops;
+ if (sals.nelts != 1)
+ error (_("Couldn't get information on specified line."));
- mention (b);
- update_global_location_list (1);
-}
+ sal = sals.sals[0];
+ xfree (sals.sals); /* malloc'd, so freed. */
-/* Implement the "catch exception" command. */
+ if (*arg)
+ error (_("Junk at end of arguments."));
-static void
-catch_ada_exception_command (char *arg, int from_tty,
- struct cmd_list_element *command)
-{
- struct gdbarch *gdbarch = get_current_arch ();
- int tempflag;
- struct symtab_and_line sal;
- char *addr_string = NULL;
- char *exp_string = NULL;
- char *cond_string = NULL;
- struct expression *cond = NULL;
- struct breakpoint_ops *ops = NULL;
+ resolve_sal_pc (&sal);
- tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
+ if (anywhere)
+ /* If the user told us to continue until a specified location,
+ we don't specify a frame at which we need to stop. */
+ breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal,
+ null_frame_id, bp_until);
+ else
+ /* Otherwise, specify the selected frame, because we want to stop
+ only at the very same frame. */
+ breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal,
+ get_stack_frame_id (frame),
+ bp_until);
- if (!arg)
- arg = "";
- sal = ada_decode_exception_location (arg, &addr_string, &exp_string,
- &cond_string, &cond, &ops);
- create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string,
- cond_string, cond, ops, tempflag,
- from_tty);
-}
+ old_chain = make_cleanup_delete_breakpoint (breakpoint);
-/* Cleanup function for a syscall filter list. */
-static void
-clean_up_filters (void *arg)
-{
- VEC(int) *iter = *(VEC(int) **) arg;
- VEC_free (int, iter);
-}
+ tp = inferior_thread ();
+ thread = tp->num;
-/* Splits the argument using space as delimiter. Returns an xmalloc'd
- filter list, or NULL if no filtering is required. */
-static VEC(int) *
-catch_syscall_split_args (char *arg)
-{
- VEC(int) *result = NULL;
- struct cleanup *cleanup = make_cleanup (clean_up_filters, &result);
+ /* Keep within the current frame, or in frames called by the current
+ one. */
- while (*arg != '\0')
+ if (frame_id_p (frame_unwind_caller_id (frame)))
{
- int i, syscall_number;
- char *endptr;
- char cur_name[128];
- struct syscall s;
+ sal = find_pc_line (frame_unwind_caller_pc (frame), 0);
+ sal.pc = frame_unwind_caller_pc (frame);
+ breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame),
+ sal,
+ frame_unwind_caller_id (frame),
+ bp_until);
+ make_cleanup_delete_breakpoint (breakpoint2);
- /* Skip whitespace. */
- while (isspace (*arg))
- arg++;
+ set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame));
+ make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
+ }
- for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i)
- cur_name[i] = arg[i];
- cur_name[i] = '\0';
- arg += i;
+ proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
- /* Check if the user provided a syscall name or a number. */
- syscall_number = (int) strtol (cur_name, &endptr, 0);
- if (*endptr == '\0')
- get_syscall_by_number (syscall_number, &s);
- else
- {
- /* We have a name. Let's check if it's valid and convert it
- to a number. */
- get_syscall_by_name (cur_name, &s);
+ /* If we are running asynchronously, and proceed call above has
+ actually managed to start the target, arrange for breakpoints to
+ be deleted when the target stops. Otherwise, we're already
+ stopped and delete breakpoints via cleanup chain. */
- if (s.number == UNKNOWN_SYSCALL)
- /* Here we have to issue an error instead of a warning, because
- GDB cannot do anything useful if there's no syscall number to
- be caught. */
- error (_("Unknown syscall name '%s'."), cur_name);
- }
+ if (target_can_async_p () && is_running (inferior_ptid))
+ {
+ struct until_break_command_continuation_args *args;
+ args = xmalloc (sizeof (*args));
- /* Ok, it's valid. */
- VEC_safe_push (int, result, s.number);
+ args->breakpoint = breakpoint;
+ args->breakpoint2 = breakpoint2;
+ args->thread_num = thread;
+
+ discard_cleanups (old_chain);
+ add_continuation (inferior_thread (),
+ until_break_command_continuation, args,
+ xfree);
}
+ else
+ do_cleanups (old_chain);
+}
- discard_cleanups (cleanup);
- return result;
+/* 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 (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. */
+ *arg = skip_spaces (*arg);
+ cond_string = *arg;
+
+ /* Assume that the condition occupies the remainder of the arg
+ string. */
+ (*arg) += strlen (cond_string);
+
+ return cond_string;
}
-/* Implement the "catch syscall" command. */
+/* Commands to deal with catching events, such as signals, exceptions,
+ process start/exit, etc. */
+
+typedef enum
+{
+ catch_fork_temporary, catch_vfork_temporary,
+ catch_fork_permanent, catch_vfork_permanent
+}
+catch_fork_kind;
static void
-catch_syscall_command_1 (char *arg, int from_tty,
- struct cmd_list_element *command)
+catch_fork_command_1 (char *arg, int from_tty,
+ struct cmd_list_element *command)
{
- int tempflag;
- VEC(int) *filter;
- struct syscall s;
struct gdbarch *gdbarch = get_current_arch ();
+ char *cond_string = NULL;
+ catch_fork_kind fork_kind;
+ int tempflag;
- /* Checking if the feature if supported. */
- if (gdbarch_get_syscall_number_p (gdbarch) == 0)
- error (_("The feature 'catch syscall' is not supported on \
-this architeture yet."));
-
- tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
-
- ep_skip_leading_whitespace (&arg);
+ fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command);
+ tempflag = (fork_kind == catch_fork_temporary
+ || fork_kind == catch_vfork_temporary);
- /* We need to do this first "dummy" translation in order
- to get the syscall XML file loaded or, most important,
- to display a warning to the user if there's no XML file
- for his/her architecture. */
- get_syscall_by_number (0, &s);
+ if (!arg)
+ arg = "";
+ arg = skip_spaces (arg);
/* The allowed syntax is:
- catch syscall
- catch syscall <name | number> [<name | number> ... <name | number>]
+ catch [v]fork
+ catch [v]fork if <cond>
- Let's check if there's a syscall name. */
+ First, check if there's an if clause. */
+ cond_string = ep_parse_optional_if_clause (&arg);
- if (arg != NULL)
- filter = catch_syscall_split_args (arg);
- else
- filter = NULL;
+ if ((*arg != '\0') && !isspace (*arg))
+ error (_("Junk at end of arguments."));
- create_syscall_event_catchpoint (tempflag, filter,
- &catch_syscall_breakpoint_ops);
+ /* If this target supports it, create a fork or vfork catchpoint
+ and enable reporting of such events. */
+ switch (fork_kind)
+ {
+ case catch_fork_temporary:
+ case catch_fork_permanent:
+ create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string,
+ &catch_fork_breakpoint_ops);
+ break;
+ case catch_vfork_temporary:
+ case catch_vfork_permanent:
+ create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string,
+ &catch_vfork_breakpoint_ops);
+ break;
+ default:
+ error (_("unsupported or unknown fork kind; cannot catch it"));
+ break;
+ }
}
-/* Implement the "catch assert" command. */
-
static void
-catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command)
+catch_exec_command_1 (char *arg, int from_tty,
+ struct cmd_list_element *command)
{
+ struct exec_catchpoint *c;
struct gdbarch *gdbarch = get_current_arch ();
int tempflag;
- struct symtab_and_line sal;
- char *addr_string = NULL;
- struct breakpoint_ops *ops = NULL;
+ char *cond_string = NULL;
tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
if (!arg)
arg = "";
- sal = ada_decode_assert_location (arg, &addr_string, &ops);
- create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL,
- ops, tempflag, from_tty);
-}
+ arg = skip_spaces (arg);
-static void
-catch_command (char *arg, int from_tty)
-{
- error (_("Catch requires an event name."));
-}
-\f
+ /* The allowed syntax is:
+ catch exec
+ catch exec if <cond>
-static void
-tcatch_command (char *arg, int from_tty)
-{
- error (_("Catch requires an event name."));
-}
+ First, check if there's an if clause. */
+ cond_string = ep_parse_optional_if_clause (&arg);
-/* Delete breakpoints by address or line. */
+ if ((*arg != '\0') && !isspace (*arg))
+ error (_("Junk at end of arguments."));
-static void
-clear_command (char *arg, int from_tty)
+ c = XNEW (struct exec_catchpoint);
+ init_catchpoint (&c->base, gdbarch, tempflag, cond_string,
+ &catch_exec_breakpoint_ops);
+ c->exec_pathname = NULL;
+
+ install_breakpoint (0, &c->base);
+}
+
+static enum print_stop_action
+print_it_exception_catchpoint (bpstat bs)
{
- struct breakpoint *b;
- VEC(breakpoint_p) *found = 0;
- int ix;
- int default_match;
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- int i;
+ struct ui_out *uiout = current_uiout;
+ struct breakpoint *b = bs->breakpoint_at;
+ int bp_temp, bp_throw;
- if (arg)
- {
- sals = decode_line_spec (arg, 1);
- default_match = 0;
- }
- else
- {
- sals.sals = (struct symtab_and_line *)
- xmalloc (sizeof (struct symtab_and_line));
- make_cleanup (xfree, sals.sals);
- init_sal (&sal); /* initialize to zeroes */
- sal.line = default_breakpoint_line;
- sal.symtab = default_breakpoint_symtab;
- sal.pc = default_breakpoint_address;
- sal.pspace = default_breakpoint_pspace;
- if (sal.symtab == 0)
- error (_("No source file specified."));
-
- sals.sals[0] = sal;
- sals.nelts = 1;
+ annotate_catchpoint (b->number);
- default_match = 1;
+ bp_throw = strstr (b->addr_string, "throw") != NULL;
+ if (b->loc->address != b->loc->requested_address)
+ breakpoint_adjustment_warning (b->loc->requested_address,
+ b->loc->address,
+ b->number, 1);
+ bp_temp = b->disposition == disp_del;
+ ui_out_text (uiout,
+ bp_temp ? "Temporary catchpoint "
+ : "Catchpoint ");
+ if (!ui_out_is_mi_like_p (uiout))
+ ui_out_field_int (uiout, "bkptno", b->number);
+ ui_out_text (uiout,
+ bp_throw ? " (exception thrown), "
+ : " (exception caught), ");
+ if (ui_out_is_mi_like_p (uiout))
+ {
+ ui_out_field_string (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
+ ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
+ ui_out_field_int (uiout, "bkptno", b->number);
}
+ return PRINT_SRC_AND_LOC;
+}
- /* We don't call resolve_sal_pc here. That's not
- as bad as it seems, because all existing breakpoints
- typically have both file/line and pc set. So, if
- clear is given file/line, we can match this to existing
- breakpoint without obtaining pc at all.
-
- We only support clearing given the address explicitly
- present in breakpoint table. Say, we've set breakpoint
- at file:line. There were several PC values for that file:line,
- due to optimization, all in one block.
- We've picked one PC value. If "clear" is issued with another
- PC corresponding to the same file:line, the breakpoint won't
- be cleared. We probably can still clear the breakpoint, but
- since the other PC value is never presented to user, user
- can only find it by guessing, and it does not seem important
- to support that. */
-
- /* For each line spec given, delete bps which correspond
- to it. Do it in two passes, solely to preserve the current
- behavior that from_tty is forced true if we delete more than
- one breakpoint. */
+static void
+print_one_exception_catchpoint (struct breakpoint *b,
+ struct bp_location **last_loc)
+{
+ struct value_print_options opts;
+ struct ui_out *uiout = current_uiout;
- found = NULL;
- for (i = 0; i < sals.nelts; i++)
+ get_user_print_options (&opts);
+ if (opts.addressprint)
{
- /* If exact pc given, clear bpts at that pc.
- 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> */
+ annotate_field (4);
+ if (b->loc == NULL || b->loc->shlib_disabled)
+ ui_out_field_string (uiout, "addr", "<PENDING>");
+ else
+ ui_out_field_core_addr (uiout, "addr",
+ b->loc->gdbarch, b->loc->address);
+ }
+ annotate_field (5);
+ if (b->loc)
+ *last_loc = b->loc;
+ if (strstr (b->addr_string, "throw") != NULL)
+ ui_out_field_string (uiout, "what", "exception throw");
+ else
+ ui_out_field_string (uiout, "what", "exception catch");
+}
- sal = sals.sals[i];
+static void
+print_mention_exception_catchpoint (struct breakpoint *b)
+{
+ struct ui_out *uiout = current_uiout;
+ int bp_temp;
+ int bp_throw;
- /* Find all matching breakpoints and add them to
- 'found'. */
- ALL_BREAKPOINTS (b)
- {
- int match = 0;
- /* Are we going to delete b? */
- if (b->type != bp_none && !is_watchpoint (b))
- {
- struct bp_location *loc = b->loc;
- for (; loc; loc = loc->next)
- {
- int pc_match = sal.pc
- && (loc->pspace == sal.pspace)
- && (loc->address == sal.pc)
- && (!section_is_overlay (loc->section)
- || loc->section == sal.section);
- int line_match = ((default_match || (0 == sal.pc))
- && b->source_file != NULL
- && sal.symtab != NULL
- && sal.pspace == loc->pspace
- && strcmp (b->source_file, sal.symtab->filename) == 0
- && b->line_number == sal.line);
- if (pc_match || line_match)
- {
- match = 1;
- break;
- }
- }
- }
+ bp_temp = b->disposition == disp_del;
+ bp_throw = strstr (b->addr_string, "throw") != NULL;
+ ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ")
+ : _("Catchpoint "));
+ ui_out_field_int (uiout, "bkptno", b->number);
+ ui_out_text (uiout, bp_throw ? _(" (throw)")
+ : _(" (catch)"));
+}
- if (match)
- VEC_safe_push(breakpoint_p, found, b);
- }
- }
- /* Now go thru the 'found' chain and delete them. */
- if (VEC_empty(breakpoint_p, found))
- {
- if (arg)
- error (_("No breakpoint at %s."), arg);
- else
- error (_("No breakpoint at this line."));
- }
+/* Implement the "print_recreate" breakpoint_ops method for throw and
+ catch catchpoints. */
- if (VEC_length(breakpoint_p, found) > 1)
- from_tty = 1; /* Always report if deleted more than one */
- if (from_tty)
- {
- if (VEC_length(breakpoint_p, found) == 1)
- printf_unfiltered (_("Deleted breakpoint "));
- else
- printf_unfiltered (_("Deleted breakpoints "));
- }
- breakpoints_changed ();
+static void
+print_recreate_exception_catchpoint (struct breakpoint *b,
+ struct ui_file *fp)
+{
+ int bp_temp;
+ int bp_throw;
- for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++)
- {
- if (from_tty)
- printf_unfiltered ("%d ", b->number);
- delete_breakpoint (b);
- }
- if (from_tty)
- putchar_unfiltered ('\n');
+ bp_temp = b->disposition == disp_del;
+ bp_throw = strstr (b->addr_string, "throw") != NULL;
+ fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch ");
+ fprintf_unfiltered (fp, bp_throw ? "throw" : "catch");
+ print_recreate_thread (b, fp);
}
-\f
-/* 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 (bpstat bs)
+static struct breakpoint_ops gnu_v3_exception_catchpoint_ops;
+
+static int
+handle_gnu_v3_exceptions (int tempflag, char *cond_string,
+ enum exception_event_kind ex_event, int from_tty)
{
- struct breakpoint *b, *temp;
+ char *trigger_func_name;
+
+ if (ex_event == EX_EVENT_CATCH)
+ trigger_func_name = "__cxa_begin_catch";
+ else
+ trigger_func_name = "__cxa_throw";
- for (; bs; bs = bs->next)
- if (bs->breakpoint_at
- && bs->breakpoint_at->disposition == disp_del
- && bs->stop)
- delete_breakpoint (bs->breakpoint_at);
+ create_breakpoint (get_current_arch (),
+ trigger_func_name, cond_string, -1,
+ 0 /* condition and thread are valid. */,
+ tempflag, bp_breakpoint,
+ 0,
+ AUTO_BOOLEAN_TRUE /* pending */,
+ &gnu_v3_exception_catchpoint_ops, from_tty,
+ 1 /* enabled */,
+ 0 /* internal */);
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->disposition == disp_del_at_next_stop)
- delete_breakpoint (b);
- }
+ return 1;
}
-/* A comparison function for bp_location AP and BP being interfaced to qsort.
- Sort elements primarily by their ADDRESS (no matter what does
- breakpoint_address_is_meaningful say for its OWNER), secondarily by ordering
- first bp_permanent OWNERed elements and terciarily just ensuring the array
- is sorted stable way despite qsort being an instable algorithm. */
+/* Deal with "catch catch" and "catch throw" commands. */
-static int
-bp_location_compare (const void *ap, const void *bp)
+static void
+catch_exception_command_1 (enum exception_event_kind ex_event, char *arg,
+ int tempflag, int from_tty)
{
- struct bp_location *a = *(void **) ap;
- struct bp_location *b = *(void **) bp;
- /* A and B come from existing breakpoints having non-NULL OWNER. */
- int a_perm = a->owner->enable_state == bp_permanent;
- int b_perm = b->owner->enable_state == bp_permanent;
+ char *cond_string = NULL;
- if (a->address != b->address)
- return (a->address > b->address) - (a->address < b->address);
+ if (!arg)
+ arg = "";
+ arg = skip_spaces (arg);
- /* Sort permanent breakpoints first. */
- if (a_perm != b_perm)
- return (a_perm < b_perm) - (a_perm > b_perm);
+ cond_string = ep_parse_optional_if_clause (&arg);
- /* Make the user-visible order stable across GDB runs. Locations of the same
- breakpoint can be sorted in arbitrary order. */
+ if ((*arg != '\0') && !isspace (*arg))
+ error (_("Junk at end of arguments."));
- if (a->owner->number != b->owner->number)
- return (a->owner->number > b->owner->number)
- - (a->owner->number < b->owner->number);
+ if (ex_event != EX_EVENT_THROW
+ && ex_event != EX_EVENT_CATCH)
+ error (_("Unsupported or unknown exception event; cannot catch it"));
- return (a > b) - (a < b);
+ if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty))
+ return;
+
+ warning (_("Unsupported with this platform/compiler combination."));
}
-/* Set bp_location_placed_address_before_address_max and
- bp_location_shadow_len_after_address_max according to the current content of
- the bp_location array. */
+/* Implementation of "catch catch" command. */
static void
-bp_location_target_extensions_update (void)
+catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command)
{
- struct bp_location *bl, **blp_tmp;
+ int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
- bp_location_placed_address_before_address_max = 0;
- bp_location_shadow_len_after_address_max = 0;
+ catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty);
+}
- ALL_BP_LOCATIONS (bl, blp_tmp)
- {
- CORE_ADDR start, end, addr;
+/* Implementation of "catch throw" command. */
- if (!bp_location_has_shadow (bl))
- continue;
+static void
+catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command)
+{
+ int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
- start = bl->target_info.placed_address;
- end = start + bl->target_info.shadow_len;
+ catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty);
+}
- gdb_assert (bl->address >= start);
- addr = bl->address - start;
+void
+init_ada_exception_breakpoint (struct breakpoint *b,
+ struct gdbarch *gdbarch,
+ struct symtab_and_line sal,
+ char *addr_string,
+ const struct breakpoint_ops *ops,
+ int tempflag,
+ int from_tty)
+{
+ if (from_tty)
+ {
+ struct gdbarch *loc_gdbarch = get_sal_arch (sal);
+ if (!loc_gdbarch)
+ loc_gdbarch = gdbarch;
+
+ describe_other_breakpoints (loc_gdbarch,
+ sal.pspace, sal.pc, sal.section, -1);
+ /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
+ version for exception catchpoints, because two catchpoints
+ used for different exception names will use the same address.
+ In this case, a "breakpoint ... also set at..." warning is
+ unproductive. Besides, the warning phrasing is also a bit
+ inappropriate, we should use the word catchpoint, and tell
+ the user what type of catchpoint it is. The above is good
+ enough for now, though. */
+ }
+
+ init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops);
+
+ b->enable_state = bp_enabled;
+ b->disposition = tempflag ? disp_del : disp_donttouch;
+ b->addr_string = addr_string;
+ b->language = language_ada;
+}
+
+/* Splits the argument using space as delimiter. Returns an xmalloc'd
+ filter list, or NULL if no filtering is required. */
+static VEC(int) *
+catch_syscall_split_args (char *arg)
+{
+ VEC(int) *result = NULL;
+ struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result);
+
+ while (*arg != '\0')
+ {
+ int i, syscall_number;
+ char *endptr;
+ char cur_name[128];
+ struct syscall s;
+
+ /* Skip whitespace. */
+ while (isspace (*arg))
+ arg++;
+
+ for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i)
+ cur_name[i] = arg[i];
+ cur_name[i] = '\0';
+ arg += i;
+
+ /* Check if the user provided a syscall name or a number. */
+ syscall_number = (int) strtol (cur_name, &endptr, 0);
+ if (*endptr == '\0')
+ get_syscall_by_number (syscall_number, &s);
+ else
+ {
+ /* We have a name. Let's check if it's valid and convert it
+ to a number. */
+ get_syscall_by_name (cur_name, &s);
+
+ if (s.number == UNKNOWN_SYSCALL)
+ /* Here we have to issue an error instead of a warning,
+ because GDB cannot do anything useful if there's no
+ syscall number to be caught. */
+ error (_("Unknown syscall name '%s'."), cur_name);
+ }
+
+ /* Ok, it's valid. */
+ VEC_safe_push (int, result, s.number);
+ }
+
+ discard_cleanups (cleanup);
+ return result;
+}
+
+/* Implement the "catch syscall" command. */
+
+static void
+catch_syscall_command_1 (char *arg, int from_tty,
+ struct cmd_list_element *command)
+{
+ int tempflag;
+ VEC(int) *filter;
+ struct syscall s;
+ struct gdbarch *gdbarch = get_current_arch ();
+
+ /* Checking if the feature if supported. */
+ if (gdbarch_get_syscall_number_p (gdbarch) == 0)
+ error (_("The feature 'catch syscall' is not supported on \
+this architecture yet."));
+
+ tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
+
+ arg = skip_spaces (arg);
+
+ /* We need to do this first "dummy" translation in order
+ to get the syscall XML file loaded or, most important,
+ to display a warning to the user if there's no XML file
+ for his/her architecture. */
+ get_syscall_by_number (0, &s);
+
+ /* The allowed syntax is:
+ catch syscall
+ catch syscall <name | number> [<name | number> ... <name | number>]
+
+ Let's check if there's a syscall name. */
+
+ if (arg != NULL)
+ filter = catch_syscall_split_args (arg);
+ else
+ filter = NULL;
+
+ create_syscall_event_catchpoint (tempflag, filter,
+ &catch_syscall_breakpoint_ops);
+}
+
+static void
+catch_command (char *arg, int from_tty)
+{
+ error (_("Catch requires an event name."));
+}
+\f
+
+static void
+tcatch_command (char *arg, int from_tty)
+{
+ error (_("Catch requires an event name."));
+}
+
+/* Delete breakpoints by address or line. */
+
+static void
+clear_command (char *arg, int from_tty)
+{
+ struct breakpoint *b;
+ VEC(breakpoint_p) *found = 0;
+ int ix;
+ int default_match;
+ struct symtabs_and_lines sals;
+ struct symtab_and_line sal;
+ int i;
+
+ if (arg)
+ {
+ sals = decode_line_spec (arg, 1);
+ default_match = 0;
+ }
+ else
+ {
+ sals.sals = (struct symtab_and_line *)
+ xmalloc (sizeof (struct symtab_and_line));
+ make_cleanup (xfree, sals.sals);
+ init_sal (&sal); /* Initialize to zeroes. */
+ sal.line = default_breakpoint_line;
+ sal.symtab = default_breakpoint_symtab;
+ sal.pc = default_breakpoint_address;
+ sal.pspace = default_breakpoint_pspace;
+ if (sal.symtab == 0)
+ error (_("No source file specified."));
+
+ sals.sals[0] = sal;
+ sals.nelts = 1;
+
+ default_match = 1;
+ }
+
+ /* We don't call resolve_sal_pc here. That's not as bad as it
+ seems, because all existing breakpoints typically have both
+ file/line and pc set. So, if clear is given file/line, we can
+ match this to existing breakpoint without obtaining pc at all.
+
+ We only support clearing given the address explicitly
+ present in breakpoint table. Say, we've set breakpoint
+ at file:line. There were several PC values for that file:line,
+ due to optimization, all in one block.
+
+ We've picked one PC value. If "clear" is issued with another
+ PC corresponding to the same file:line, the breakpoint won't
+ be cleared. We probably can still clear the breakpoint, but
+ since the other PC value is never presented to user, user
+ can only find it by guessing, and it does not seem important
+ to support that. */
+
+ /* For each line spec given, delete bps which correspond to it. Do
+ it in two passes, solely to preserve the current behavior that
+ from_tty is forced true if we delete more than one
+ breakpoint. */
+
+ found = NULL;
+ for (i = 0; i < sals.nelts; i++)
+ {
+ /* If exact pc given, clear bpts at that pc.
+ 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];
+
+ /* Find all matching breakpoints and add them to 'found'. */
+ ALL_BREAKPOINTS (b)
+ {
+ int match = 0;
+ /* Are we going to delete b? */
+ if (b->type != bp_none && !is_watchpoint (b))
+ {
+ struct bp_location *loc = b->loc;
+ for (; loc; loc = loc->next)
+ {
+ int pc_match = sal.pc
+ && (loc->pspace == sal.pspace)
+ && (loc->address == sal.pc)
+ && (!section_is_overlay (loc->section)
+ || loc->section == sal.section);
+ int line_match = ((default_match || (0 == sal.pc))
+ && b->source_file != NULL
+ && sal.symtab != NULL
+ && sal.pspace == loc->pspace
+ && filename_cmp (b->source_file,
+ sal.symtab->filename) == 0
+ && b->line_number == sal.line);
+ if (pc_match || line_match)
+ {
+ match = 1;
+ break;
+ }
+ }
+ }
+
+ if (match)
+ VEC_safe_push(breakpoint_p, found, b);
+ }
+ }
+ /* Now go thru the 'found' chain and delete them. */
+ if (VEC_empty(breakpoint_p, found))
+ {
+ if (arg)
+ error (_("No breakpoint at %s."), arg);
+ else
+ error (_("No breakpoint at this line."));
+ }
+
+ if (VEC_length(breakpoint_p, found) > 1)
+ from_tty = 1; /* Always report if deleted more than one. */
+ if (from_tty)
+ {
+ if (VEC_length(breakpoint_p, found) == 1)
+ printf_unfiltered (_("Deleted breakpoint "));
+ else
+ printf_unfiltered (_("Deleted breakpoints "));
+ }
+ breakpoints_changed ();
+
+ for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++)
+ {
+ if (from_tty)
+ printf_unfiltered ("%d ", b->number);
+ delete_breakpoint (b);
+ }
+ if (from_tty)
+ putchar_unfiltered ('\n');
+}
+\f
+/* 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 (bpstat bs)
+{
+ struct breakpoint *b, *b_tmp;
+
+ for (; bs; bs = bs->next)
+ if (bs->breakpoint_at
+ && bs->breakpoint_at->disposition == disp_del
+ && bs->stop)
+ delete_breakpoint (bs->breakpoint_at);
+
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
+ {
+ if (b->disposition == disp_del_at_next_stop)
+ delete_breakpoint (b);
+ }
+}
+
+/* A comparison function for bp_location AP and BP being interfaced to
+ qsort. Sort elements primarily by their ADDRESS (no matter what
+ does breakpoint_address_is_meaningful say for its OWNER),
+ secondarily by ordering first bp_permanent OWNERed elements and
+ terciarily just ensuring the array is sorted stable way despite
+ qsort being an unstable algorithm. */
+
+static int
+bp_location_compare (const void *ap, const void *bp)
+{
+ struct bp_location *a = *(void **) ap;
+ struct bp_location *b = *(void **) bp;
+ /* A and B come from existing breakpoints having non-NULL OWNER. */
+ int a_perm = a->owner->enable_state == bp_permanent;
+ int b_perm = b->owner->enable_state == bp_permanent;
+
+ if (a->address != b->address)
+ return (a->address > b->address) - (a->address < b->address);
+
+ /* Sort permanent breakpoints first. */
+ if (a_perm != b_perm)
+ return (a_perm < b_perm) - (a_perm > b_perm);
+
+ /* Make the user-visible order stable across GDB runs. Locations of
+ the same breakpoint can be sorted in arbitrary order. */
+
+ if (a->owner->number != b->owner->number)
+ return (a->owner->number > b->owner->number)
+ - (a->owner->number < b->owner->number);
+
+ return (a > b) - (a < b);
+}
+
+/* Set bp_location_placed_address_before_address_max and
+ bp_location_shadow_len_after_address_max according to the current
+ content of the bp_location array. */
+
+static void
+bp_location_target_extensions_update (void)
+{
+ struct bp_location *bl, **blp_tmp;
+
+ bp_location_placed_address_before_address_max = 0;
+ bp_location_shadow_len_after_address_max = 0;
+
+ ALL_BP_LOCATIONS (bl, blp_tmp)
+ {
+ CORE_ADDR start, end, addr;
+
+ if (!bp_location_has_shadow (bl))
+ continue;
+
+ start = bl->target_info.placed_address;
+ end = start + bl->target_info.shadow_len;
+
+ gdb_assert (bl->address >= start);
+ addr = bl->address - start;
if (addr > bp_location_placed_address_before_address_max)
bp_location_placed_address_before_address_max = addr;
- /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */
+ /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */
+
+ gdb_assert (bl->address < end);
+ addr = end - bl->address;
+ if (addr > bp_location_shadow_len_after_address_max)
+ bp_location_shadow_len_after_address_max = addr;
+ }
+}
+
+/* Swap the insertion/duplication state between two locations. */
+
+static void
+swap_insertion (struct bp_location *left, struct bp_location *right)
+{
+ const int left_inserted = left->inserted;
+ const int left_duplicate = left->duplicate;
+ const struct bp_target_info left_target_info = left->target_info;
+
+ left->inserted = right->inserted;
+ left->duplicate = right->duplicate;
+ left->target_info = right->target_info;
+ right->inserted = left_inserted;
+ right->duplicate = left_duplicate;
+ right->target_info = left_target_info;
+}
+
+/* If SHOULD_INSERT is false, do not insert any breakpoint locations
+ into the inferior, only remove already-inserted locations that no
+ longer should be inserted. Functions that delete a breakpoint or
+ breakpoints should pass false, so that deleting a breakpoint
+ doesn't have the side effect of inserting the locations of other
+ breakpoints that are marked not-inserted, but should_be_inserted
+ returns true on them.
+
+ This behaviour is useful is situations close to tear-down -- e.g.,
+ after an exec, while the target still has execution, but breakpoint
+ shadows of the previous executable image should *NOT* be restored
+ to the new image; or before detaching, where the target still has
+ execution and wants to delete breakpoints from GDB's lists, and all
+ breakpoints had already been removed from the inferior. */
+
+static void
+update_global_location_list (int should_insert)
+{
+ struct breakpoint *b;
+ struct bp_location **locp, *loc;
+ struct cleanup *cleanups;
+
+ /* Used in the duplicates detection below. When iterating over all
+ bp_locations, points to the first bp_location of a given address.
+ Breakpoints and watchpoints of different types are never
+ duplicates of each other. Keep one pointer for each type of
+ breakpoint/watchpoint, so we only need to loop over all locations
+ once. */
+ struct bp_location *bp_loc_first; /* breakpoint */
+ struct bp_location *wp_loc_first; /* hardware watchpoint */
+ struct bp_location *awp_loc_first; /* access watchpoint */
+ struct bp_location *rwp_loc_first; /* read watchpoint */
+
+ /* Saved former bp_location array which we compare against the newly
+ built bp_location from the current state of ALL_BREAKPOINTS. */
+ struct bp_location **old_location, **old_locp;
+ unsigned old_location_count;
+
+ old_location = bp_location;
+ old_location_count = bp_location_count;
+ bp_location = NULL;
+ bp_location_count = 0;
+ cleanups = make_cleanup (xfree, old_location);
+
+ ALL_BREAKPOINTS (b)
+ for (loc = b->loc; loc; loc = loc->next)
+ bp_location_count++;
+
+ bp_location = xmalloc (sizeof (*bp_location) * bp_location_count);
+ locp = bp_location;
+ ALL_BREAKPOINTS (b)
+ for (loc = b->loc; loc; loc = loc->next)
+ *locp++ = loc;
+ qsort (bp_location, bp_location_count, sizeof (*bp_location),
+ bp_location_compare);
+
+ bp_location_target_extensions_update ();
+
+ /* Identify bp_location instances that are no longer present in the
+ new list, and therefore should be freed. Note that it's not
+ necessary that those locations should be removed from inferior --
+ if there's another location at the same address (previously
+ marked as duplicate), we don't need to remove/insert the
+ location.
+
+ LOCP is kept in sync with OLD_LOCP, each pointing to the current
+ and former bp_location array state respectively. */
+
+ locp = bp_location;
+ for (old_locp = old_location; old_locp < old_location + old_location_count;
+ old_locp++)
+ {
+ struct bp_location *old_loc = *old_locp;
+ struct bp_location **loc2p;
+
+ /* Tells if 'old_loc' is found among the new locations. If
+ not, we have to free it. */
+ int found_object = 0;
+ /* Tells if the location should remain inserted in the target. */
+ int keep_in_target = 0;
+ int removed = 0;
+
+ /* Skip LOCP entries which will definitely never be needed.
+ Stop either at or being the one matching OLD_LOC. */
+ while (locp < bp_location + bp_location_count
+ && (*locp)->address < old_loc->address)
+ locp++;
+
+ for (loc2p = locp;
+ (loc2p < bp_location + bp_location_count
+ && (*loc2p)->address == old_loc->address);
+ loc2p++)
+ {
+ if (*loc2p == old_loc)
+ {
+ found_object = 1;
+ break;
+ }
+ }
+
+ /* If this location is no longer present, and inserted, look if
+ there's maybe a new location at the same address. If so,
+ mark that one inserted, and don't remove this one. This is
+ needed so that we don't have a time window where a breakpoint
+ at certain location is not inserted. */
+
+ if (old_loc->inserted)
+ {
+ /* If the location is inserted now, we might have to remove
+ it. */
+
+ if (found_object && should_be_inserted (old_loc))
+ {
+ /* The location is still present in the location list,
+ and still should be inserted. Don't do anything. */
+ keep_in_target = 1;
+ }
+ else
+ {
+ /* The location is either no longer present, or got
+ disabled. See if there's another location at the
+ same address, in which case we don't need to remove
+ this one from the target. */
+
+ /* OLD_LOC comes from existing struct breakpoint. */
+ if (breakpoint_address_is_meaningful (old_loc->owner))
+ {
+ for (loc2p = locp;
+ (loc2p < bp_location + bp_location_count
+ && (*loc2p)->address == old_loc->address);
+ loc2p++)
+ {
+ struct bp_location *loc2 = *loc2p;
+
+ if (breakpoint_locations_match (loc2, old_loc))
+ {
+ /* Read watchpoint locations are switched to
+ access watchpoints, if the former are not
+ supported, but the latter are. */
+ if (is_hardware_watchpoint (old_loc->owner))
+ {
+ gdb_assert (is_hardware_watchpoint (loc2->owner));
+ loc2->watchpoint_type = old_loc->watchpoint_type;
+ }
+
+ /* loc2 is a duplicated location. We need to check
+ if it should be inserted in case it will be
+ unduplicated. */
+ if (loc2 != old_loc
+ && unduplicated_should_be_inserted (loc2))
+ {
+ swap_insertion (old_loc, loc2);
+ keep_in_target = 1;
+ break;
+ }
+ }
+ }
+ }
+ }
+
+ if (!keep_in_target)
+ {
+ if (remove_breakpoint (old_loc, mark_uninserted))
+ {
+ /* This is just about all we can do. We could keep
+ this location on the global list, and try to
+ remove it next time, but there's no particular
+ reason why we will succeed next time.
+
+ Note that at this point, old_loc->owner is still
+ valid, as delete_breakpoint frees the breakpoint
+ only after calling us. */
+ printf_filtered (_("warning: Error removing "
+ "breakpoint %d\n"),
+ old_loc->owner->number);
+ }
+ removed = 1;
+ }
+ }
+
+ if (!found_object)
+ {
+ if (removed && non_stop
+ && breakpoint_address_is_meaningful (old_loc->owner)
+ && !is_hardware_watchpoint (old_loc->owner))
+ {
+ /* This location was removed from the target. In
+ non-stop mode, a race condition is possible where
+ we've removed a breakpoint, but stop events for that
+ breakpoint are already queued and will arrive later.
+ We apply an heuristic to be able to distinguish such
+ SIGTRAPs from other random SIGTRAPs: we keep this
+ breakpoint location for a bit, and will retire it
+ after we see some number of events. The theory here
+ is that reporting of events should, "on the average",
+ be fair, so after a while we'll see events from all
+ threads that have anything of interest, and no longer
+ need to keep this breakpoint location around. We
+ don't hold locations forever so to reduce chances of
+ mistaking a non-breakpoint SIGTRAP for a breakpoint
+ SIGTRAP.
+
+ The heuristic failing can be disastrous on
+ decr_pc_after_break targets.
+
+ On decr_pc_after_break targets, like e.g., x86-linux,
+ if we fail to recognize a late breakpoint SIGTRAP,
+ because events_till_retirement has reached 0 too
+ soon, we'll fail to do the PC adjustment, and report
+ a random SIGTRAP to the user. When the user resumes
+ the inferior, it will most likely immediately crash
+ with SIGILL/SIGBUS/SIGSEGV, or worse, get silently
+ corrupted, because of being resumed e.g., in the
+ middle of a multi-byte instruction, or skipped a
+ one-byte instruction. This was actually seen happen
+ on native x86-linux, and should be less rare on
+ targets that do not support new thread events, like
+ remote, due to the heuristic depending on
+ thread_count.
+
+ Mistaking a random SIGTRAP for a breakpoint trap
+ causes similar symptoms (PC adjustment applied when
+ it shouldn't), but then again, playing with SIGTRAPs
+ behind the debugger's back is asking for trouble.
+
+ Since hardware watchpoint traps are always
+ distinguishable from other traps, so we don't need to
+ apply keep hardware watchpoint moribund locations
+ around. We simply always ignore hardware watchpoint
+ traps we can no longer explain. */
- gdb_assert (bl->address < end);
- addr = end - bl->address;
- if (addr > bp_location_shadow_len_after_address_max)
- bp_location_shadow_len_after_address_max = addr;
+ old_loc->events_till_retirement = 3 * (thread_count () + 1);
+ old_loc->owner = NULL;
+
+ VEC_safe_push (bp_location_p, moribund_locations, old_loc);
+ }
+ else
+ {
+ old_loc->owner = NULL;
+ decref_bp_location (&old_loc);
+ }
+ }
+ }
+
+ /* Rescan breakpoints at the same address and section, marking the
+ first one as "first" and any others as "duplicates". This is so
+ that the bpt instruction is only inserted once. If we have a
+ permanent breakpoint at the same place as BPT, make that one the
+ official one, and the rest as duplicates. Permanent breakpoints
+ are sorted first for the same address.
+
+ Do the same for hardware watchpoints, but also considering the
+ watchpoint's type (regular/access/read) and length. */
+
+ bp_loc_first = NULL;
+ wp_loc_first = NULL;
+ awp_loc_first = NULL;
+ rwp_loc_first = NULL;
+ ALL_BP_LOCATIONS (loc, locp)
+ {
+ /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always
+ non-NULL. */
+ struct breakpoint *b = loc->owner;
+ struct bp_location **loc_first_p;
+
+ if (b->enable_state == bp_disabled
+ || b->enable_state == bp_call_disabled
+ || b->enable_state == bp_startup_disabled
+ || !loc->enabled
+ || loc->shlib_disabled
+ || !breakpoint_address_is_meaningful (b)
+ || is_tracepoint (b))
+ continue;
+
+ /* Permanent breakpoint should always be inserted. */
+ if (b->enable_state == bp_permanent && ! loc->inserted)
+ internal_error (__FILE__, __LINE__,
+ _("allegedly permanent breakpoint is not "
+ "actually inserted"));
+
+ if (b->type == bp_hardware_watchpoint)
+ loc_first_p = &wp_loc_first;
+ else if (b->type == bp_read_watchpoint)
+ loc_first_p = &rwp_loc_first;
+ else if (b->type == bp_access_watchpoint)
+ loc_first_p = &awp_loc_first;
+ else
+ loc_first_p = &bp_loc_first;
+
+ if (*loc_first_p == NULL
+ || (overlay_debugging && loc->section != (*loc_first_p)->section)
+ || !breakpoint_locations_match (loc, *loc_first_p))
+ {
+ *loc_first_p = loc;
+ loc->duplicate = 0;
+ continue;
+ }
+
+
+ /* This and the above ensure the invariant that the first location
+ is not duplicated, and is the inserted one.
+ All following are marked as duplicated, and are not inserted. */
+ if (loc->inserted)
+ swap_insertion (loc, *loc_first_p);
+ loc->duplicate = 1;
+
+ if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted
+ && b->enable_state != bp_permanent)
+ internal_error (__FILE__, __LINE__,
+ _("another breakpoint was inserted on top of "
+ "a permanent breakpoint"));
}
+
+ if (breakpoints_always_inserted_mode () && should_insert
+ && (have_live_inferiors ()
+ || (gdbarch_has_global_breakpoints (target_gdbarch))))
+ insert_breakpoint_locations ();
+
+ do_cleanups (cleanups);
}
-/* If SHOULD_INSERT is false, do not insert any breakpoint locations
- into the inferior, only remove already-inserted locations that no
- longer should be inserted. Functions that delete a breakpoint or
- breakpoints should pass false, so that deleting a breakpoint
- doesn't have the side effect of inserting the locations of other
- breakpoints that are marked not-inserted, but should_be_inserted
- returns true on them.
+void
+breakpoint_retire_moribund (void)
+{
+ struct bp_location *loc;
+ int ix;
+
+ for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
+ if (--(loc->events_till_retirement) == 0)
+ {
+ decref_bp_location (&loc);
+ VEC_unordered_remove (bp_location_p, moribund_locations, ix);
+ --ix;
+ }
+}
+
+static void
+update_global_location_list_nothrow (int inserting)
+{
+ struct gdb_exception e;
+
+ TRY_CATCH (e, RETURN_MASK_ERROR)
+ update_global_location_list (inserting);
+}
+
+/* Clear BKP from a BPS. */
+
+static void
+bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt)
+{
+ bpstat bs;
+
+ for (bs = bps; bs; bs = bs->next)
+ if (bs->breakpoint_at == bpt)
+ {
+ bs->breakpoint_at = NULL;
+ bs->old_val = NULL;
+ /* bs->commands will be freed later. */
+ }
+}
+
+/* Callback for iterate_over_threads. */
+static int
+bpstat_remove_breakpoint_callback (struct thread_info *th, void *data)
+{
+ struct breakpoint *bpt = data;
+
+ bpstat_remove_bp_location (th->control.stop_bpstat, bpt);
+ return 0;
+}
+
+/* Helper for breakpoint and tracepoint breakpoint_ops->mention
+ callbacks. */
+
+static void
+say_where (struct breakpoint *b)
+{
+ struct ui_out *uiout = current_uiout;
+ struct value_print_options opts;
+
+ get_user_print_options (&opts);
+
+ /* i18n: cagney/2005-02-11: Below needs to be merged into a
+ single string. */
+ if (b->loc == NULL)
+ {
+ printf_filtered (_(" (%s) pending."), b->addr_string);
+ }
+ else
+ {
+ if (opts.addressprint || b->source_file == NULL)
+ {
+ printf_filtered (" at ");
+ fputs_filtered (paddress (b->loc->gdbarch, b->loc->address),
+ gdb_stdout);
+ }
+ if (b->source_file)
+ printf_filtered (": file %s, line %d.",
+ b->source_file, b->line_number);
+
+ if (b->loc->next)
+ {
+ struct bp_location *loc = b->loc;
+ int n = 0;
+ for (; loc; loc = loc->next)
+ ++n;
+ printf_filtered (" (%d locations)", n);
+ }
+ }
+}
+
+/* Default bp_location_ops methods. */
+
+static void
+bp_location_dtor (struct bp_location *self)
+{
+ xfree (self->cond);
+ xfree (self->function_name);
+}
+
+static const struct bp_location_ops bp_location_ops =
+{
+ bp_location_dtor
+};
+
+/* Default breakpoint_ops methods all breakpoint_ops ultimately
+ inherit from. */
+
+static void
+base_breakpoint_dtor (struct breakpoint *self)
+{
+ decref_counted_command_line (&self->commands);
+ xfree (self->cond_string);
+ xfree (self->addr_string);
+ xfree (self->addr_string_range_end);
+ xfree (self->source_file);
+}
+
+static struct bp_location *
+base_breakpoint_allocate_location (struct breakpoint *self)
+{
+ struct bp_location *loc;
+
+ loc = XNEW (struct bp_location);
+ init_bp_location (loc, &bp_location_ops, self);
+ return loc;
+}
+
+static void
+base_breakpoint_re_set (struct breakpoint *b)
+{
+ /* Nothing to re-set. */
+}
+
+#define internal_error_pure_virtual_called() \
+ gdb_assert_not_reached ("pure virtual function called")
+
+static int
+base_breakpoint_insert_location (struct bp_location *bl)
+{
+ internal_error_pure_virtual_called ();
+}
+
+static int
+base_breakpoint_remove_location (struct bp_location *bl)
+{
+ internal_error_pure_virtual_called ();
+}
+
+static int
+base_breakpoint_breakpoint_hit (const struct bp_location *bl,
+ struct address_space *aspace,
+ CORE_ADDR bp_addr)
+{
+ internal_error_pure_virtual_called ();
+}
+
+static void
+base_breakpoint_check_status (bpstat bs)
+{
+ /* Always stop. */
+}
+
+/* A "works_in_software_mode" breakpoint_ops method that just internal
+ errors. */
+
+static int
+base_breakpoint_works_in_software_mode (const struct breakpoint *b)
+{
+ internal_error_pure_virtual_called ();
+}
+
+/* A "resources_needed" breakpoint_ops method that just internal
+ errors. */
+
+static int
+base_breakpoint_resources_needed (const struct bp_location *bl)
+{
+ internal_error_pure_virtual_called ();
+}
+
+static enum print_stop_action
+base_breakpoint_print_it (bpstat bs)
+{
+ internal_error_pure_virtual_called ();
+}
+
+static void
+base_breakpoint_print_one_detail (const struct breakpoint *self,
+ struct ui_out *uiout)
+{
+ /* nothing */
+}
+
+static void
+base_breakpoint_print_mention (struct breakpoint *b)
+{
+ internal_error_pure_virtual_called ();
+}
+
+static void
+base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp)
+{
+ internal_error_pure_virtual_called ();
+}
+
+static struct breakpoint_ops base_breakpoint_ops =
+{
+ base_breakpoint_dtor,
+ base_breakpoint_allocate_location,
+ base_breakpoint_re_set,
+ base_breakpoint_insert_location,
+ base_breakpoint_remove_location,
+ base_breakpoint_breakpoint_hit,
+ base_breakpoint_check_status,
+ base_breakpoint_resources_needed,
+ base_breakpoint_works_in_software_mode,
+ base_breakpoint_print_it,
+ NULL,
+ base_breakpoint_print_one_detail,
+ base_breakpoint_print_mention,
+ base_breakpoint_print_recreate
+};
+
+/* Default breakpoint_ops methods. */
+
+static void
+bkpt_re_set (struct breakpoint *b)
+{
+ /* Do not attempt to re-set breakpoints disabled during startup. */
+ if (b->enable_state == bp_startup_disabled)
+ return;
+
+ /* FIXME: is this still reachable? */
+ if (b->addr_string == NULL)
+ {
+ /* Anything without a string can't be re-set. */
+ delete_breakpoint (b);
+ return;
+ }
+
+ breakpoint_re_set_default (b);
+}
+
+static int
+bkpt_insert_location (struct bp_location *bl)
+{
+ if (bl->loc_type == bp_loc_hardware_breakpoint)
+ return target_insert_hw_breakpoint (bl->gdbarch,
+ &bl->target_info);
+ else
+ return target_insert_breakpoint (bl->gdbarch,
+ &bl->target_info);
+}
- This behaviour is useful is situations close to tear-down -- e.g.,
- after an exec, while the target still has execution, but breakpoint
- shadows of the previous executable image should *NOT* be restored
- to the new image; or before detaching, where the target still has
- execution and wants to delete breakpoints from GDB's lists, and all
- breakpoints had already been removed from the inferior. */
+static int
+bkpt_remove_location (struct bp_location *bl)
+{
+ if (bl->loc_type == bp_loc_hardware_breakpoint)
+ return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info);
+ else
+ return target_remove_breakpoint (bl->gdbarch, &bl->target_info);
+}
-static void
-update_global_location_list (int should_insert)
+static int
+bkpt_breakpoint_hit (const struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR bp_addr)
{
- struct breakpoint *b;
- struct bp_location **locp, *loc;
- struct cleanup *cleanups;
+ struct breakpoint *b = bl->owner;
- /* Used in the duplicates detection below. When iterating over all
- bp_locations, points to the first bp_location of a given address.
- Breakpoints and watchpoints of different types are never
- duplicates of each other. Keep one pointer for each type of
- breakpoint/watchpoint, so we only need to loop over all locations
- once. */
- struct bp_location *bp_loc_first; /* breakpoint */
- struct bp_location *wp_loc_first; /* hardware watchpoint */
- struct bp_location *awp_loc_first; /* access watchpoint */
- struct bp_location *rwp_loc_first; /* read watchpoint */
+ if (!breakpoint_address_match (bl->pspace->aspace, bl->address,
+ aspace, bp_addr))
+ return 0;
- /* Saved former bp_location array which we compare against the newly built
- bp_location from the current state of ALL_BREAKPOINTS. */
- struct bp_location **old_location, **old_locp;
- unsigned old_location_count;
+ if (overlay_debugging /* unmapped overlay section */
+ && section_is_overlay (bl->section)
+ && !section_is_mapped (bl->section))
+ return 0;
- old_location = bp_location;
- old_location_count = bp_location_count;
- bp_location = NULL;
- bp_location_count = 0;
- cleanups = make_cleanup (xfree, old_location);
+ return 1;
+}
- ALL_BREAKPOINTS (b)
- for (loc = b->loc; loc; loc = loc->next)
- bp_location_count++;
+static int
+bkpt_resources_needed (const struct bp_location *bl)
+{
+ gdb_assert (bl->owner->type == bp_hardware_breakpoint);
- bp_location = xmalloc (sizeof (*bp_location) * bp_location_count);
- locp = bp_location;
- ALL_BREAKPOINTS (b)
- for (loc = b->loc; loc; loc = loc->next)
- *locp++ = loc;
- qsort (bp_location, bp_location_count, sizeof (*bp_location),
- bp_location_compare);
+ return 1;
+}
- bp_location_target_extensions_update ();
+static enum print_stop_action
+bkpt_print_it (bpstat bs)
+{
+ struct breakpoint *b;
+ const struct bp_location *bl;
+ int bp_temp;
+ struct ui_out *uiout = current_uiout;
- /* Identify bp_location instances that are no longer present in the new
- list, and therefore should be freed. Note that it's not necessary that
- those locations should be removed from inferior -- if there's another
- location at the same address (previously marked as duplicate),
- we don't need to remove/insert the location.
-
- LOCP is kept in sync with OLD_LOCP, each pointing to the current and
- former bp_location array state respectively. */
+ gdb_assert (bs->bp_location_at != NULL);
- locp = bp_location;
- for (old_locp = old_location; old_locp < old_location + old_location_count;
- old_locp++)
- {
- struct bp_location *old_loc = *old_locp;
- struct bp_location **loc2p;
+ bl = bs->bp_location_at;
+ b = bs->breakpoint_at;
- /* Tells if 'old_loc' is found amoung the new locations. If not, we
- have to free it. */
- int found_object = 0;
- /* Tells if the location should remain inserted in the target. */
- int keep_in_target = 0;
- int removed = 0;
+ bp_temp = b->disposition == disp_del;
+ if (bl->address != bl->requested_address)
+ breakpoint_adjustment_warning (bl->requested_address,
+ bl->address,
+ b->number, 1);
+ annotate_breakpoint (b->number);
+ if (bp_temp)
+ ui_out_text (uiout, "\nTemporary breakpoint ");
+ else
+ ui_out_text (uiout, "\nBreakpoint ");
+ if (ui_out_is_mi_like_p (uiout))
+ {
+ ui_out_field_string (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
+ ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
+ }
+ ui_out_field_int (uiout, "bkptno", b->number);
+ ui_out_text (uiout, ", ");
- /* Skip LOCP entries which will definitely never be needed. Stop either
- at or being the one matching OLD_LOC. */
- while (locp < bp_location + bp_location_count
- && (*locp)->address < old_loc->address)
- locp++;
+ return PRINT_SRC_AND_LOC;
+}
- for (loc2p = locp;
- (loc2p < bp_location + bp_location_count
- && (*loc2p)->address == old_loc->address);
- loc2p++)
- {
- if (*loc2p == old_loc)
- {
- found_object = 1;
- break;
- }
- }
+static void
+bkpt_print_mention (struct breakpoint *b)
+{
+ if (ui_out_is_mi_like_p (current_uiout))
+ return;
- /* If this location is no longer present, and inserted, look if there's
- maybe a new location at the same address. If so, mark that one
- inserted, and don't remove this one. This is needed so that we
- don't have a time window where a breakpoint at certain location is not
- inserted. */
+ switch (b->type)
+ {
+ case bp_breakpoint:
+ case bp_gnu_ifunc_resolver:
+ if (b->disposition == disp_del)
+ printf_filtered (_("Temporary breakpoint"));
+ else
+ printf_filtered (_("Breakpoint"));
+ printf_filtered (_(" %d"), b->number);
+ if (b->type == bp_gnu_ifunc_resolver)
+ printf_filtered (_(" at gnu-indirect-function resolver"));
+ break;
+ case bp_hardware_breakpoint:
+ printf_filtered (_("Hardware assisted breakpoint %d"), b->number);
+ break;
+ }
- if (old_loc->inserted)
- {
- /* If the location is inserted now, we might have to remove it. */
+ say_where (b);
+}
- if (found_object && should_be_inserted (old_loc))
- {
- /* The location is still present in the location list, and still
- should be inserted. Don't do anything. */
- keep_in_target = 1;
- }
- else
- {
- /* The location is either no longer present, or got disabled.
- See if there's another location at the same address, in which
- case we don't need to remove this one from the target. */
+static void
+bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp)
+{
+ if (tp->type == bp_breakpoint && tp->disposition == disp_del)
+ fprintf_unfiltered (fp, "tbreak");
+ else if (tp->type == bp_breakpoint)
+ fprintf_unfiltered (fp, "break");
+ else if (tp->type == bp_hardware_breakpoint
+ && tp->disposition == disp_del)
+ fprintf_unfiltered (fp, "thbreak");
+ else if (tp->type == bp_hardware_breakpoint)
+ fprintf_unfiltered (fp, "hbreak");
+ else
+ internal_error (__FILE__, __LINE__,
+ _("unhandled breakpoint type %d"), (int) tp->type);
- /* OLD_LOC comes from existing struct breakpoint. */
- if (breakpoint_address_is_meaningful (old_loc->owner))
- {
- for (loc2p = locp;
- (loc2p < bp_location + bp_location_count
- && (*loc2p)->address == old_loc->address);
- loc2p++)
- {
- struct bp_location *loc2 = *loc2p;
+ fprintf_unfiltered (fp, " %s", tp->addr_string);
+}
- if (breakpoint_locations_match (loc2, old_loc))
- {
- /* For the sake of should_be_inserted.
- Duplicates check below will fix up this later. */
- loc2->duplicate = 0;
+/* Virtual table for internal breakpoints. */
- /* Read watchpoint locations are switched to
- access watchpoints, if the former are not
- supported, but the latter are. */
- if (is_hardware_watchpoint (old_loc->owner))
- {
- gdb_assert (is_hardware_watchpoint (loc2->owner));
- loc2->watchpoint_type = old_loc->watchpoint_type;
- }
+static void
+internal_bkpt_re_set (struct breakpoint *b)
+{
+ switch (b->type)
+ {
+ /* Delete overlay event and longjmp master breakpoints; they
+ will be reset later by breakpoint_re_set. */
+ case bp_overlay_event:
+ case bp_longjmp_master:
+ case bp_std_terminate_master:
+ case bp_exception_master:
+ delete_breakpoint (b);
+ break;
- if (loc2 != old_loc && should_be_inserted (loc2))
- {
- loc2->inserted = 1;
- loc2->target_info = old_loc->target_info;
- keep_in_target = 1;
- 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:
- if (!keep_in_target)
- {
- if (remove_breakpoint (old_loc, mark_uninserted))
- {
- /* This is just about all we can do. We could keep this
- location on the global list, and try to remove it next
- time, but there's no particular reason why we will
- succeed next time.
-
- Note that at this point, old_loc->owner is still valid,
- as delete_breakpoint frees the breakpoint only
- after calling us. */
- printf_filtered (_("warning: Error removing breakpoint %d\n"),
- old_loc->owner->number);
- }
- removed = 1;
- }
- }
+ /* Like bp_shlib_event, this breakpoint type is special. Once
+ it is set up, we do not want to touch it. */
+ case bp_thread_event:
+ break;
+ }
+}
- if (!found_object)
- {
- if (removed && non_stop
- && breakpoint_address_is_meaningful (old_loc->owner)
- && !is_hardware_watchpoint (old_loc->owner))
- {
- /* This location was removed from the target. In
- non-stop mode, a race condition is possible where
- we've removed a breakpoint, but stop events for that
- breakpoint are already queued and will arrive later.
- We apply an heuristic to be able to distinguish such
- SIGTRAPs from other random SIGTRAPs: we keep this
- breakpoint location for a bit, and will retire it
- after we see some number of events. The theory here
- is that reporting of events should, "on the average",
- be fair, so after a while we'll see events from all
- threads that have anything of interest, and no longer
- need to keep this breakpoint location around. We
- don't hold locations forever so to reduce chances of
- mistaking a non-breakpoint SIGTRAP for a breakpoint
- SIGTRAP.
+static void
+internal_bkpt_check_status (bpstat bs)
+{
+ /* We do not stop for these. */
+ bs->stop = 0;
+}
- The heuristic failing can be disastrous on
- decr_pc_after_break targets.
+static enum print_stop_action
+internal_bkpt_print_it (bpstat bs)
+{
+ struct breakpoint *b;
- On decr_pc_after_break targets, like e.g., x86-linux,
- if we fail to recognize a late breakpoint SIGTRAP,
- because events_till_retirement has reached 0 too
- soon, we'll fail to do the PC adjustment, and report
- a random SIGTRAP to the user. When the user resumes
- the inferior, it will most likely immediately crash
- with SIGILL/SIGBUS/SIGSEGV, or worse, get silently
- corrupted, because of being resumed e.g., in the
- middle of a multi-byte instruction, or skipped a
- one-byte instruction. This was actually seen happen
- on native x86-linux, and should be less rare on
- targets that do not support new thread events, like
- remote, due to the heuristic depending on
- thread_count.
+ b = bs->breakpoint_at;
- Mistaking a random SIGTRAP for a breakpoint trap
- causes similar symptoms (PC adjustment applied when
- it shouldn't), but then again, playing with SIGTRAPs
- behind the debugger's back is asking for trouble.
+ switch (b->type)
+ {
+ case bp_shlib_event:
+ /* Did we stop because the user set the stop_on_solib_events
+ variable? (If so, we report this as a generic, "Stopped due
+ to shlib event" message.) */
+ printf_filtered (_("Stopped due to shared library event\n"));
+ break;
- Since hardware watchpoint traps are always
- distinguishable from other traps, so we don't need to
- apply keep hardware watchpoint moribund locations
- around. We simply always ignore hardware watchpoint
- traps we can no longer explain. */
+ case bp_thread_event:
+ /* Not sure how we will get here.
+ GDB should not stop for these breakpoints. */
+ printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n"));
+ break;
- old_loc->events_till_retirement = 3 * (thread_count () + 1);
- old_loc->owner = NULL;
+ case bp_overlay_event:
+ /* By analogy with the thread event, GDB should not stop for these. */
+ printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n"));
+ break;
- VEC_safe_push (bp_location_p, moribund_locations, old_loc);
- }
- else
- {
- old_loc->owner = NULL;
- decref_bp_location (&old_loc);
- }
- }
+ case bp_longjmp_master:
+ /* These should never be enabled. */
+ printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n"));
+ break;
+
+ case bp_std_terminate_master:
+ /* These should never be enabled. */
+ printf_filtered (_("std::terminate Master Breakpoint: "
+ "gdb should not stop!\n"));
+ break;
+
+ case bp_exception_master:
+ /* These should never be enabled. */
+ printf_filtered (_("Exception Master Breakpoint: "
+ "gdb should not stop!\n"));
+ break;
}
- /* Rescan breakpoints at the same address and section, marking the
- first one as "first" and any others as "duplicates". This is so
- that the bpt instruction is only inserted once. If we have a
- permanent breakpoint at the same place as BPT, make that one the
- official one, and the rest as duplicates. Permanent breakpoints
- are sorted first for the same address.
+ return PRINT_NOTHING;
+}
- Do the same for hardware watchpoints, but also considering the
- watchpoint's type (regular/access/read) and length. */
+static void
+internal_bkpt_print_mention (struct breakpoint *b)
+{
+ /* Nothing to mention. These breakpoints are internal. */
+}
- bp_loc_first = NULL;
- wp_loc_first = NULL;
- awp_loc_first = NULL;
- rwp_loc_first = NULL;
- ALL_BP_LOCATIONS (loc, locp)
- {
- /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
- struct breakpoint *b = loc->owner;
- struct bp_location **loc_first_p;
+/* Virtual table for momentary breakpoints */
- if (b->enable_state == bp_disabled
- || b->enable_state == bp_call_disabled
- || b->enable_state == bp_startup_disabled
- || !loc->enabled
- || loc->shlib_disabled
- || !breakpoint_address_is_meaningful (b)
- || is_tracepoint (b))
- continue;
+static void
+momentary_bkpt_re_set (struct breakpoint *b)
+{
+ /* 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. */
+}
- /* Permanent breakpoint should always be inserted. */
- if (b->enable_state == bp_permanent && ! loc->inserted)
- internal_error (__FILE__, __LINE__,
- _("allegedly permanent breakpoint is not "
- "actually inserted"));
+static void
+momentary_bkpt_check_status (bpstat bs)
+{
+ /* Nothing. The point of these breakpoints is causing a stop. */
+}
- if (b->type == bp_hardware_watchpoint)
- loc_first_p = &wp_loc_first;
- else if (b->type == bp_read_watchpoint)
- loc_first_p = &rwp_loc_first;
- else if (b->type == bp_access_watchpoint)
- loc_first_p = &awp_loc_first;
- else
- loc_first_p = &bp_loc_first;
+static enum print_stop_action
+momentary_bkpt_print_it (bpstat bs)
+{
+ struct ui_out *uiout = current_uiout;
- if (*loc_first_p == NULL
- || (overlay_debugging && loc->section != (*loc_first_p)->section)
- || !breakpoint_locations_match (loc, *loc_first_p))
- {
- *loc_first_p = loc;
- loc->duplicate = 0;
- continue;
- }
+ if (ui_out_is_mi_like_p (uiout))
+ {
+ struct breakpoint *b = bs->breakpoint_at;
- loc->duplicate = 1;
+ switch (b->type)
+ {
+ case bp_finish:
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED));
+ break;
- if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted
- && b->enable_state != bp_permanent)
- internal_error (__FILE__, __LINE__,
- _("another breakpoint was inserted on top of "
- "a permanent breakpoint"));
+ case bp_until:
+ ui_out_field_string
+ (uiout, "reason",
+ async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED));
+ break;
+ }
}
- if (breakpoints_always_inserted_mode () && should_insert
- && (have_live_inferiors ()
- || (gdbarch_has_global_breakpoints (target_gdbarch))))
- insert_breakpoint_locations ();
+ return PRINT_UNKNOWN;
+}
- do_cleanups (cleanups);
+static void
+momentary_bkpt_print_mention (struct breakpoint *b)
+{
+ /* Nothing to mention. These breakpoints are internal. */
}
-void
-breakpoint_retire_moribund (void)
+/* The breakpoint_ops structure to be used in tracepoints. */
+
+static void
+tracepoint_re_set (struct breakpoint *b)
{
- struct bp_location *loc;
- int ix;
+ breakpoint_re_set_default (b);
+}
- for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
- if (--(loc->events_till_retirement) == 0)
- {
- decref_bp_location (&loc);
- VEC_unordered_remove (bp_location_p, moribund_locations, ix);
- --ix;
- }
+static int
+tracepoint_breakpoint_hit (const struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR bp_addr)
+{
+ /* By definition, the inferior does not report stops at
+ tracepoints. */
+ return 0;
}
static void
-update_global_location_list_nothrow (int inserting)
+tracepoint_print_one_detail (const struct breakpoint *self,
+ struct ui_out *uiout)
{
- struct gdb_exception e;
+ struct tracepoint *tp = (struct tracepoint *) self;
+ if (tp->static_trace_marker_id)
+ {
+ gdb_assert (self->type == bp_static_tracepoint);
- TRY_CATCH (e, RETURN_MASK_ERROR)
- update_global_location_list (inserting);
+ ui_out_text (uiout, "\tmarker id is ");
+ ui_out_field_string (uiout, "static-tracepoint-marker-string-id",
+ tp->static_trace_marker_id);
+ ui_out_text (uiout, "\n");
+ }
}
-/* Clear BKP from a BPS. */
-
static void
-bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt)
+tracepoint_print_mention (struct breakpoint *b)
{
- bpstat bs;
+ if (ui_out_is_mi_like_p (current_uiout))
+ return;
- for (bs = bps; bs; bs = bs->next)
- if (bs->breakpoint_at == bpt)
- {
- bs->breakpoint_at = NULL;
- bs->old_val = NULL;
- /* bs->commands will be freed later. */
- }
+ switch (b->type)
+ {
+ case bp_tracepoint:
+ printf_filtered (_("Tracepoint"));
+ printf_filtered (_(" %d"), b->number);
+ break;
+ case bp_fast_tracepoint:
+ printf_filtered (_("Fast tracepoint"));
+ printf_filtered (_(" %d"), b->number);
+ break;
+ case bp_static_tracepoint:
+ printf_filtered (_("Static tracepoint"));
+ printf_filtered (_(" %d"), b->number);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("unhandled tracepoint type %d"), (int) b->type);
+ }
+
+ say_where (b);
}
-/* Callback for iterate_over_threads. */
-static int
-bpstat_remove_breakpoint_callback (struct thread_info *th, void *data)
+static void
+tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp)
{
- struct breakpoint *bpt = data;
+ struct tracepoint *tp = (struct tracepoint *) self;
- bpstat_remove_bp_location (th->control.stop_bpstat, bpt);
- return 0;
+ if (self->type == bp_fast_tracepoint)
+ fprintf_unfiltered (fp, "ftrace");
+ if (self->type == bp_static_tracepoint)
+ fprintf_unfiltered (fp, "strace");
+ else if (self->type == bp_tracepoint)
+ fprintf_unfiltered (fp, "trace");
+ else
+ internal_error (__FILE__, __LINE__,
+ _("unhandled tracepoint type %d"), (int) self->type);
+
+ fprintf_unfiltered (fp, " %s", self->addr_string);
+ print_recreate_thread (self, fp);
+
+ if (tp->pass_count)
+ fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count);
}
+struct breakpoint_ops tracepoint_breakpoint_ops;
+
/* Delete a breakpoint and clean up all traces of it in the data
structures. */
gdb_assert (bpt != NULL);
- /* 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. */
+ /* 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;
- /* At least avoid this stale reference until the reference counting of
- breakpoints gets resolved. */
- if (bpt->related_breakpoint != NULL)
+ /* At least avoid this stale reference until the reference counting
+ of breakpoints gets resolved. */
+ if (bpt->related_breakpoint != bpt)
{
- gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt);
- bpt->related_breakpoint->disposition = disp_del_at_next_stop;
- bpt->related_breakpoint->related_breakpoint = NULL;
- bpt->related_breakpoint = NULL;
+ struct breakpoint *related;
+ struct watchpoint *w;
+
+ if (bpt->type == bp_watchpoint_scope)
+ w = (struct watchpoint *) bpt->related_breakpoint;
+ else if (bpt->related_breakpoint->type == bp_watchpoint_scope)
+ w = (struct watchpoint *) bpt;
+ else
+ w = NULL;
+ if (w != NULL)
+ watchpoint_del_at_next_stop (w);
+
+ /* Unlink bpt from the bpt->related_breakpoint ring. */
+ for (related = bpt; related->related_breakpoint != bpt;
+ related = related->related_breakpoint);
+ related->related_breakpoint = bpt->related_breakpoint;
+ bpt->related_breakpoint = bpt;
}
- observer_notify_breakpoint_deleted (bpt->number);
+ /* watch_command_1 creates a watchpoint but only sets its number if
+ update_watchpoint succeeds in creating its bp_locations. If there's
+ a problem in that process, we'll be asked to delete the half-created
+ watchpoint. In that case, don't announce the deletion. */
+ if (bpt->number)
+ observer_notify_breakpoint_deleted (bpt);
if (breakpoint_chain == bpt)
breakpoint_chain = bpt->next;
break;
}
- decref_counted_command_line (&bpt->commands);
- xfree (bpt->cond_string);
- xfree (bpt->cond_exp);
- xfree (bpt->addr_string);
- xfree (bpt->exp);
- xfree (bpt->exp_string);
- xfree (bpt->exp_string_reparse);
- value_free (bpt->val);
- xfree (bpt->source_file);
- xfree (bpt->exec_pathname);
- clean_up_filters (&bpt->syscalls_to_be_caught);
-
-
/* Be sure no bpstat's are pointing at the breakpoint after it's
been freed. */
/* FIXME, how can we find all bpstat's? We just check stop_bpstat
- in all threeds for now. Note that we cannot just remove bpstats
+ in all threads for now. Note that we cannot just remove bpstats
pointing at bpt from the stop_bpstat list entirely, as breakpoint
commands are associated with the bpstat; if we remove it here,
then the later call to bpstat_do_actions (&stop_bpstat); in
iterate_over_threads (bpstat_remove_breakpoint_callback, bpt);
- /* Now that breakpoint is removed from breakpoint
- list, update the global location list. This
- will remove locations that used to belong to
- this breakpoint. Do this before freeing
- the breakpoint itself, since remove_breakpoint
- looks at location's owner. It might be better
- design to have location completely self-contained,
- but it's not the case now. */
+ /* Now that breakpoint is removed from breakpoint list, update the
+ global location list. This will remove locations that used to
+ belong to this breakpoint. Do this before freeing the breakpoint
+ itself, since remove_breakpoint looks at location's owner. It
+ might be better design to have location completely
+ self-contained, but it's not the case now. */
update_global_location_list (0);
-
- /* On the chance that someone will soon try again to delete this same
- bp, we mark it as deleted before freeing its storage. */
+ bpt->ops->dtor (bpt);
+ /* 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;
-
xfree (bpt);
}
return make_cleanup (do_delete_breakpoint_cleanup, b);
}
-/* A callback for map_breakpoint_numbers that calls
- delete_breakpoint. */
+/* Iterator function to call a user-provided callback function once
+ for each of B and its related breakpoints. */
+
+static void
+iterate_over_related_breakpoints (struct breakpoint *b,
+ void (*function) (struct breakpoint *,
+ void *),
+ void *data)
+{
+ struct breakpoint *related;
+
+ related = b;
+ do
+ {
+ struct breakpoint *next;
+
+ /* FUNCTION may delete RELATED. */
+ next = related->related_breakpoint;
+
+ if (next == related)
+ {
+ /* RELATED is the last ring entry. */
+ function (related, data);
+
+ /* FUNCTION may have deleted it, so we'd never reach back to
+ B. There's nothing left to do anyway, so just break
+ out. */
+ break;
+ }
+ else
+ function (related, data);
+
+ related = next;
+ }
+ while (related != b);
+}
static void
do_delete_breakpoint (struct breakpoint *b, void *ignore)
delete_breakpoint (b);
}
+/* A callback for map_breakpoint_numbers that calls
+ delete_breakpoint. */
+
+static void
+do_map_delete_breakpoint (struct breakpoint *b, void *ignore)
+{
+ iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL);
+}
+
void
delete_command (char *arg, int from_tty)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
dont_repeat ();
{
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. */
+ /* Delete all breakpoints if no argument. Do not delete
+ internal breakpoints, these have to be deleted with an
+ explicit breakpoint number argument. */
ALL_BREAKPOINTS (b)
- {
- if (b->type != bp_call_dummy
- && b->type != bp_std_terminate
- && b->type != bp_shlib_event
- && b->type != bp_jit_event
- && b->type != bp_thread_event
- && b->type != bp_overlay_event
- && b->type != bp_longjmp_master
- && b->type != bp_std_terminate_master
- && b->type != bp_exception_master
- && b->number >= 0)
+ if (user_breakpoint_p (b))
{
breaks_to_delete = 1;
break;
}
- }
/* Ask user only if there are some breakpoints to delete. */
if (!from_tty
|| (breaks_to_delete && query (_("Delete all breakpoints? "))))
{
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->type != bp_call_dummy
- && b->type != bp_std_terminate
- && b->type != bp_shlib_event
- && b->type != bp_thread_event
- && b->type != bp_jit_event
- && b->type != bp_overlay_event
- && b->type != bp_longjmp_master
- && b->type != bp_std_terminate_master
- && b->type != bp_exception_master
- && b->number >= 0)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
+ if (user_breakpoint_p (b))
delete_breakpoint (b);
- }
}
}
else
- map_breakpoint_numbers (arg, do_delete_breakpoint, NULL);
+ map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL);
}
static int
slot = (const char **) htab_find_slot (htab, (const void *) name,
INSERT);
- /* NOTE: We can assume slot != NULL here because xcalloc never returns
- NULL. */
+ /* NOTE: We can assume slot != NULL here because xcalloc never
+ returns NULL. */
if (*slot != NULL)
{
htab_delete (htab);
static struct symtab_and_line
update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal)
{
+ struct tracepoint *tp = (struct tracepoint *) b;
struct static_tracepoint_marker marker;
CORE_ADDR pc;
int i;
if (target_static_tracepoint_marker_at (pc, &marker))
{
- if (strcmp (b->static_trace_marker_id, marker.str_id) != 0)
+ if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0)
warning (_("static tracepoint %d changed probed marker from %s to %s"),
b->number,
- b->static_trace_marker_id, marker.str_id);
+ tp->static_trace_marker_id, marker.str_id);
- xfree (b->static_trace_marker_id);
- b->static_trace_marker_id = xstrdup (marker.str_id);
+ xfree (tp->static_trace_marker_id);
+ tp->static_trace_marker_id = xstrdup (marker.str_id);
release_static_tracepoint_marker (&marker);
return sal;
if (!sal.explicit_pc
&& sal.line != 0
&& sal.symtab != NULL
- && b->static_trace_marker_id != NULL)
+ && tp->static_trace_marker_id != NULL)
{
VEC(static_tracepoint_marker_p) *markers;
markers
- = target_static_tracepoint_markers_by_strid (b->static_trace_marker_id);
+ = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id);
if (!VEC_empty(static_tracepoint_marker_p, markers))
{
struct symtab_and_line sal;
struct symbol *sym;
struct static_tracepoint_marker *marker;
+ struct ui_out *uiout = current_uiout;
marker = VEC_index (static_tracepoint_marker_p, markers, 0);
- xfree (b->static_trace_marker_id);
- b->static_trace_marker_id = xstrdup (marker->str_id);
+ xfree (tp->static_trace_marker_id);
+ tp->static_trace_marker_id = xstrdup (marker->str_id);
warning (_("marker for static tracepoint %d (%s) not "
"found at previous line number"),
- b->number, b->static_trace_marker_id);
+ b->number, tp->static_trace_marker_id);
init_sal (&sal);
return sal;
}
-static void
+/* Returns 1 iff locations A and B are sufficiently same that
+ we don't need to report breakpoint as changed. */
+
+static int
+locations_are_equal (struct bp_location *a, struct bp_location *b)
+{
+ while (a && b)
+ {
+ if (a->address != b->address)
+ return 0;
+
+ if (a->shlib_disabled != b->shlib_disabled)
+ return 0;
+
+ if (a->enabled != b->enabled)
+ return 0;
+
+ a = a->next;
+ b = b->next;
+ }
+
+ if ((a == NULL) != (b == NULL))
+ return 0;
+
+ return 1;
+}
+
+/* Create new breakpoint locations for B (a hardware or software breakpoint)
+ based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is
+ a ranged breakpoint. */
+
+void
update_breakpoint_locations (struct breakpoint *b,
- struct symtabs_and_lines sals)
+ struct symtabs_and_lines sals,
+ struct symtabs_and_lines sals_end)
{
int i;
- char *s;
struct bp_location *existing_locations = b->loc;
- /* If there's no new locations, and all existing locations
- are pending, don't do anything. This optimizes
- the common case where all locations are in the same
- shared library, that was unloaded. We'd like to
- retain the location, so that when the library
- is loaded again, we don't loose the enabled/disabled
- status of the individual locations. */
+ /* Ranged breakpoints have only one start location and one end location. */
+ gdb_assert (sals_end.nelts == 0 || (sals.nelts == 1 && sals_end.nelts == 1));
+
+ /* If there's no new locations, and all existing locations are
+ pending, don't do anything. This optimizes the common case where
+ all locations are in the same shared library, that was unloaded.
+ We'd like to retain the location, so that when the library is
+ loaded again, we don't loose the enabled/disabled status of the
+ individual locations. */
if (all_locations_are_pending (existing_locations) && sals.nelts == 0)
return;
old symtab. */
if (b->cond_string != NULL)
{
+ char *s;
struct gdb_exception e;
s = b->cond_string;
}
if (e.reason < 0)
{
- warning (_("failed to reevaluate condition for breakpoint %d: %s"),
+ warning (_("failed to reevaluate condition "
+ "for breakpoint %d: %s"),
b->number, e.message);
new_loc->enabled = 0;
}
if (b->line_number == 0)
b->line_number = sals.sals[i].line;
+
+ if (sals_end.nelts)
+ {
+ CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]);
+
+ new_loc->length = end - sals.sals[0].pc + 1;
+ }
}
/* Update locations of permanent breakpoints. */
if (b->enable_state == bp_permanent)
make_breakpoint_permanent (b);
- /* If possible, carry over 'disable' status from existing breakpoints. */
+ /* If possible, carry over 'disable' status from existing
+ breakpoints. */
{
struct bp_location *e = existing_locations;
/* If there are multiple breakpoints with the same function name,
if (have_ambiguous_names)
{
for (; l; l = l->next)
- if (breakpoint_address_match (e->pspace->aspace, e->address,
- l->pspace->aspace, l->address))
+ if (breakpoint_locations_match (e, l))
{
l->enabled = 0;
break;
}
}
+ if (!locations_are_equal (existing_locations, b->loc))
+ observer_notify_breakpoint_modified (b);
+
update_global_location_list (1);
}
-/* Reset a breakpoint given it's struct breakpoint * BINT.
- The value we return ends up being the return value from catch_errors.
- Unused in this case. */
+/* Find the SaL locations corresponding to the given ADDR_STRING.
+ On return, FOUND will be 1 if any SaL was found, zero otherwise. */
-static int
-breakpoint_re_set_one (void *bint)
+static struct symtabs_and_lines
+addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found)
{
- /* get past catch_errs */
- struct breakpoint *b = (struct breakpoint *) bint;
- int not_found = 0;
- int *not_found_ptr = ¬_found;
- struct symtabs_and_lines sals = {0};
- struct symtabs_and_lines expanded = {0};
char *s;
+ int marker_spec;
+ struct symtabs_and_lines sals = {0};
struct gdb_exception e;
- struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
- int marker_spec = 0;
- switch (b->type)
- {
- case bp_none:
- warning (_("attempted to reset apparently deleted breakpoint #%d?"),
- b->number);
- return 0;
- case bp_breakpoint:
- case bp_hardware_breakpoint:
- case bp_tracepoint:
- case bp_fast_tracepoint:
- case bp_static_tracepoint:
- /* Do not attempt to re-set breakpoints disabled during startup. */
- if (b->enable_state == bp_startup_disabled)
- return 0;
+ s = addr_string;
+ marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s);
- if (b->addr_string == NULL)
+ TRY_CATCH (e, RETURN_MASK_ERROR)
+ {
+ if (marker_spec)
{
- /* Anything without a string can't be re-set. */
- delete_breakpoint (b);
- return 0;
- }
-
- input_radix = b->input_radix;
- s = b->addr_string;
-
- save_current_space_and_thread ();
- switch_to_program_space_and_thread (b->pspace);
-
- marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s);
+ struct tracepoint *tp = (struct tracepoint *) b;
- set_language (b->language);
- TRY_CATCH (e, RETURN_MASK_ERROR)
- {
- if (marker_spec)
+ sals = decode_static_tracepoint_spec (&s);
+ if (sals.nelts > tp->static_trace_marker_id_idx)
{
- sals = decode_static_tracepoint_spec (&s);
- if (sals.nelts > b->static_trace_marker_id_idx)
- {
- sals.sals[0] = sals.sals[b->static_trace_marker_id_idx];
- sals.nelts = 1;
- }
- else
- error (_("marker %s not found"), b->static_trace_marker_id);
+ sals.sals[0] = sals.sals[tp->static_trace_marker_id_idx];
+ sals.nelts = 1;
}
else
- sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL,
- not_found_ptr);
+ error (_("marker %s not found"), tp->static_trace_marker_id);
}
- if (e.reason < 0)
+ else
+ sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, NULL);
+ }
+ if (e.reason < 0)
+ {
+ int not_found_and_ok = 0;
+ /* For pending breakpoints, it's expected that parsing will
+ fail until the right shared library is loaded. User has
+ already told to create pending breakpoints and don't need
+ extra messages. If breakpoint is in bp_shlib_disabled
+ state, then user already saw the message about that
+ breakpoint being disabled, and don't want to see more
+ errors. */
+ if (e.error == NOT_FOUND_ERROR
+ && (b->condition_not_parsed
+ || (b->loc && b->loc->shlib_disabled)
+ || b->enable_state == bp_disabled))
+ not_found_and_ok = 1;
+
+ if (!not_found_and_ok)
{
- int not_found_and_ok = 0;
- /* For pending breakpoints, it's expected that parsing
- will fail until the right shared library is loaded.
- User has already told to create pending breakpoints and
- don't need extra messages. If breakpoint is in bp_shlib_disabled
- state, then user already saw the message about that breakpoint
- being disabled, and don't want to see more errors. */
- if (not_found
- && (b->condition_not_parsed
- || (b->loc && b->loc->shlib_disabled)
- || b->enable_state == bp_disabled))
- not_found_and_ok = 1;
-
- if (!not_found_and_ok)
- {
- /* We surely don't want to warn about the same breakpoint
- 10 times. One solution, implemented here, is disable
- the breakpoint on error. Another solution would be to
- have separate 'warning emitted' flag. Since this
- happens only when a binary has changed, I don't know
- which approach is better. */
- b->enable_state = bp_disabled;
- throw_exception (e);
- }
+ /* We surely don't want to warn about the same breakpoint
+ 10 times. One solution, implemented here, is disable
+ the breakpoint on error. Another solution would be to
+ have separate 'warning emitted' flag. Since this
+ happens only when a binary has changed, I don't know
+ which approach is better. */
+ b->enable_state = bp_disabled;
+ throw_exception (e);
}
+ }
+
+ if (e.reason == 0 || e.error != NOT_FOUND_ERROR)
+ {
+ gdb_assert (sals.nelts == 1);
- if (!not_found)
+ resolve_sal_pc (&sals.sals[0]);
+ if (b->condition_not_parsed && s && s[0])
{
- gdb_assert (sals.nelts == 1);
+ char *cond_string = 0;
+ int thread = -1;
+ int task = 0;
+
+ find_condition_and_thread (s, sals.sals[0].pc,
+ &cond_string, &thread, &task);
+ if (cond_string)
+ b->cond_string = cond_string;
+ b->thread = thread;
+ b->task = task;
+ b->condition_not_parsed = 0;
+ }
- resolve_sal_pc (&sals.sals[0]);
- if (b->condition_not_parsed && s && s[0])
- {
- char *cond_string = 0;
- int thread = -1;
- int task = 0;
-
- find_condition_and_thread (s, sals.sals[0].pc,
- &cond_string, &thread, &task);
- if (cond_string)
- b->cond_string = cond_string;
- b->thread = thread;
- b->task = task;
- b->condition_not_parsed = 0;
- }
+ if (b->type == bp_static_tracepoint && !marker_spec)
+ sals.sals[0] = update_static_tracepoint (b, sals.sals[0]);
+
+ *found = 1;
+ }
+ else
+ *found = 0;
- if (b->type == bp_static_tracepoint && !marker_spec)
- sals.sals[0] = update_static_tracepoint (b, sals.sals[0]);
+ return sals;
+}
- expanded = expand_line_sal_maybe (sals.sals[0]);
- }
+/* The default re_set method, for typical hardware or software
+ breakpoints. Reevaluate the breakpoint and recreate its
+ locations. */
+static void
+breakpoint_re_set_default (struct breakpoint *b)
+{
+ int found;
+ struct symtabs_and_lines sals, sals_end;
+ struct symtabs_and_lines expanded = {0};
+ struct symtabs_and_lines expanded_end = {0};
+
+ sals = addr_string_to_sals (b, b->addr_string, &found);
+ if (found)
+ {
make_cleanup (xfree, sals.sals);
- update_breakpoint_locations (b, expanded);
- break;
+ expanded = expand_line_sal_maybe (sals.sals[0]);
+ }
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
- /* Watchpoint can be either on expression using entirely global variables,
- or it can be on local variables.
-
- Watchpoints of the first kind are never auto-deleted, and even persist
- across program restarts. Since they can use variables from shared
- libraries, we need to reparse expression as libraries are loaded
- and unloaded.
-
- Watchpoints on local variables can also change meaning as result
- of solib event. For example, if a watchpoint uses both a local and
- a global variables in expression, it's a local watchpoint, but
- unloading of a shared library will make the expression invalid.
- This is not a very common use case, but we still re-evaluate
- expression, to avoid surprises to the user.
-
- Note that for local watchpoints, we re-evaluate it only if
- watchpoints frame id is still valid. If it's not, it means
- the watchpoint is out of scope and will be deleted soon. In fact,
- I'm not sure we'll ever be called in this case.
-
- If a local watchpoint's frame id is still valid, then
- b->exp_valid_block is likewise valid, and we can safely use it.
-
- Don't do anything about disabled watchpoints, since they will
- be reevaluated again when enabled. */
- update_watchpoint (b, 1 /* reparse */);
- 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_catchpoint:
- break;
+ if (b->addr_string_range_end)
+ {
+ sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found);
+ if (found)
+ {
+ make_cleanup (xfree, sals_end.sals);
+ expanded_end = expand_line_sal_maybe (sals_end.sals[0]);
+ }
+ }
- default:
- printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type);
- /* fall through */
- /* Delete overlay event and longjmp master breakpoints; they will be
- reset later by breakpoint_re_set. */
- case bp_overlay_event:
- case bp_longjmp_master:
- case bp_std_terminate_master:
- case bp_exception_master:
- delete_breakpoint (b);
- break;
+ update_breakpoint_locations (b, expanded, expanded_end);
+}
- /* 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:
+/* Prepare the global context for a re-set of breakpoint B. */
- /* Like bp_shlib_event, this breakpoint type is special.
- Once it is set up, we do not want to touch it. */
- case bp_thread_event:
+static struct cleanup *
+prepare_re_set_context (struct breakpoint *b)
+{
+ struct cleanup *cleanups;
- /* 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_std_terminate:
- case bp_step_resume:
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_exception:
- case bp_exception_resume:
- case bp_jit_event:
- break;
- }
+ input_radix = b->input_radix;
+ cleanups = save_current_space_and_thread ();
+ switch_to_program_space_and_thread (b->pspace);
+ set_language (b->language);
+
+ return cleanups;
+}
+
+/* Reset a breakpoint given it's struct breakpoint * BINT.
+ The value we return ends up being the return value from catch_errors.
+ Unused in this case. */
+static int
+breakpoint_re_set_one (void *bint)
+{
+ /* Get past catch_errs. */
+ struct breakpoint *b = (struct breakpoint *) bint;
+ struct cleanup *cleanups;
+
+ cleanups = prepare_re_set_context (b);
+ b->ops->re_set (b);
do_cleanups (cleanups);
return 0;
}
void
breakpoint_re_set (void)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
enum language save_language;
int save_input_radix;
struct cleanup *old_chain;
save_input_radix = input_radix;
old_chain = save_current_program_space ();
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
{
- /* Format possible error msg */
+ /* Format possible error msg. */
char *message = xstrprintf ("Error in re-setting breakpoint %d: ",
b->number);
struct cleanup *cleanups = make_cleanup (xfree, message);
do_cleanups (old_chain);
- create_overlay_event_breakpoint ("_ovly_debug_event");
- create_longjmp_master_breakpoint ("longjmp");
- create_longjmp_master_breakpoint ("_longjmp");
- create_longjmp_master_breakpoint ("siglongjmp");
- create_longjmp_master_breakpoint ("_siglongjmp");
- create_std_terminate_master_breakpoint ("std::terminate()");
+ create_overlay_event_breakpoint ();
+ create_longjmp_master_breakpoint ();
+ create_std_terminate_master_breakpoint ();
create_exception_master_breakpoint ();
}
\f
/* 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_ptid. */
+ - Else, reset it to the current thread for inferior_ptid. */
void
breakpoint_re_set_thread (struct breakpoint *b)
{
if (from_tty)
{
if (count == 0)
- printf_filtered (_("Will stop next time breakpoint %d is reached."),
+ printf_filtered (_("Will stop next time "
+ "breakpoint %d is reached."),
bptnum);
else if (count == 1)
printf_filtered (_("Will ignore next crossing of breakpoint %d."),
bptnum);
else
- printf_filtered (_("Will ignore next %d crossings of breakpoint %d."),
+ printf_filtered (_("Will ignore next %d "
+ "crossings of breakpoint %d."),
count, bptnum);
}
breakpoints_changed ();
- observer_notify_breakpoint_modified (b->number);
+ observer_notify_breakpoint_modified (b);
return;
}
error (_("No breakpoint number %d."), bptnum);
}
-void
-make_breakpoint_silent (struct breakpoint *b)
-{
- /* Silence the breakpoint. */
- b->silent = 1;
-}
-
/* Command to set ignore-count of breakpoint N to COUNT. */
static void
void *),
void *data)
{
- char *p = args;
- char *p1;
int num;
struct breakpoint *b, *tmp;
int match;
+ struct get_number_or_range_state state;
- if (p == 0)
+ if (args == 0)
error_no_arg (_("one or more breakpoint numbers"));
- while (*p)
+ init_number_or_range (&state, args);
+
+ while (!state.finished)
{
+ char *p = state.string;
+
match = 0;
- p1 = p;
- num = get_number_or_range (&p1);
+ num = get_number_or_range (&state);
if (num == 0)
{
warning (_("bad breakpoint number at or near '%s'"), p);
ALL_BREAKPOINTS_SAFE (b, tmp)
if (b->number == num)
{
- struct breakpoint *related_breakpoint = b->related_breakpoint;
match = 1;
function (b, data);
- if (related_breakpoint)
- function (related_breakpoint, data);
break;
}
if (match == 0)
printf_unfiltered (_("No breakpoint number %d.\n"), num);
}
- p = p1;
}
}
*dot = '\0';
p1 = number;
- bp_num = get_number_or_range (&p1);
+ bp_num = get_number (&p1);
if (bp_num == 0)
error (_("Bad breakpoint number '%s'"), number);
error (_("Bad breakpoint number '%s'"), number);
p1 = dot+1;
- loc_num = get_number_or_range (&p1);
+ loc_num = get_number (&p1);
if (loc_num == 0)
error (_("Bad breakpoint location number '%s'"), number);
bpt->enable_state = bp_disabled;
+ if (target_supports_enable_disable_tracepoint ()
+ && current_trace_status ()->running && is_tracepoint (bpt))
+ {
+ struct bp_location *location;
+
+ for (location = bpt->loc; location; location = location->next)
+ target_disable_tracepoint (location);
+ }
+
update_global_location_list (0);
- observer_notify_breakpoint_modified (bpt->number);
+ observer_notify_breakpoint_modified (bpt);
+}
+
+/* A callback for iterate_over_related_breakpoints. */
+
+static void
+do_disable_breakpoint (struct breakpoint *b, void *ignore)
+{
+ disable_breakpoint (b);
}
/* A callback for map_breakpoint_numbers that calls
static void
do_map_disable_breakpoint (struct breakpoint *b, void *ignore)
{
- disable_breakpoint (b);
+ iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL);
}
static void
disable_command (char *args, int from_tty)
{
- struct breakpoint *bpt;
-
if (args == 0)
- ALL_BREAKPOINTS (bpt)
- switch (bpt->type)
- {
- case bp_none:
- warning (_("attempted to disable apparently deleted breakpoint #%d?"),
- bpt->number);
- continue;
- case bp_breakpoint:
- case bp_tracepoint:
- case bp_fast_tracepoint:
- case bp_static_tracepoint:
- case bp_catchpoint:
- case bp_hardware_breakpoint:
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
- disable_breakpoint (bpt);
- default:
- continue;
- }
+ {
+ struct breakpoint *bpt;
+
+ ALL_BREAKPOINTS (bpt)
+ if (user_breakpoint_p (bpt))
+ disable_breakpoint (bpt);
+ }
else if (strchr (args, '.'))
{
struct bp_location *loc = find_location_by_number (args);
if (loc)
- loc->enabled = 0;
+ {
+ loc->enabled = 0;
+ if (target_supports_enable_disable_tracepoint ()
+ && current_trace_status ()->running && loc->owner
+ && is_tracepoint (loc->owner))
+ target_disable_tracepoint (loc);
+ }
update_global_location_list (0);
}
else
}
static void
-do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition)
+enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition)
{
int target_resources_ok;
if (is_watchpoint (bpt))
{
+ /* Initialize it just to avoid a GCC false warning. */
+ enum enable_state orig_enable_state = 0;
struct gdb_exception e;
TRY_CATCH (e, RETURN_MASK_ALL)
{
- update_watchpoint (bpt, 1 /* reparse */);
+ struct watchpoint *w = (struct watchpoint *) bpt;
+
+ orig_enable_state = bpt->enable_state;
+ bpt->enable_state = bp_enabled;
+ update_watchpoint (w, 1 /* reparse */);
}
if (e.reason < 0)
{
+ bpt->enable_state = orig_enable_state;
exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "),
bpt->number);
return;
if (bpt->enable_state != bp_permanent)
bpt->enable_state = bp_enabled;
+
+ if (target_supports_enable_disable_tracepoint ()
+ && current_trace_status ()->running && is_tracepoint (bpt))
+ {
+ struct bp_location *location;
+
+ for (location = bpt->loc; location; location = location->next)
+ target_enable_tracepoint (location);
+ }
+
bpt->disposition = disposition;
update_global_location_list (1);
breakpoints_changed ();
- observer_notify_breakpoint_modified (bpt->number);
+ observer_notify_breakpoint_modified (bpt);
}
void
enable_breakpoint (struct breakpoint *bpt)
{
- do_enable_breakpoint (bpt, bpt->disposition);
+ enable_breakpoint_disp (bpt, bpt->disposition);
+}
+
+static void
+do_enable_breakpoint (struct breakpoint *bpt, void *arg)
+{
+ enable_breakpoint (bpt);
}
/* A callback for map_breakpoint_numbers that calls
static void
do_map_enable_breakpoint (struct breakpoint *b, void *ignore)
{
- enable_breakpoint (b);
+ iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL);
}
/* The enable command enables the specified breakpoints (or all defined
static void
enable_command (char *args, int from_tty)
{
- struct breakpoint *bpt;
-
if (args == 0)
- ALL_BREAKPOINTS (bpt)
- switch (bpt->type)
- {
- case bp_none:
- warning (_("attempted to enable apparently deleted breakpoint #%d?"),
- bpt->number);
- continue;
- case bp_breakpoint:
- case bp_tracepoint:
- case bp_fast_tracepoint:
- case bp_static_tracepoint:
- case bp_catchpoint:
- case bp_hardware_breakpoint:
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
- enable_breakpoint (bpt);
- default:
- continue;
- }
+ {
+ struct breakpoint *bpt;
+
+ ALL_BREAKPOINTS (bpt)
+ if (user_breakpoint_p (bpt))
+ enable_breakpoint (bpt);
+ }
else if (strchr (args, '.'))
{
struct bp_location *loc = find_location_by_number (args);
if (loc)
- loc->enabled = 1;
+ {
+ loc->enabled = 1;
+ if (target_supports_enable_disable_tracepoint ()
+ && current_trace_status ()->running && loc->owner
+ && is_tracepoint (loc->owner))
+ target_enable_tracepoint (loc);
+ }
update_global_location_list (1);
}
else
}
static void
-enable_once_breakpoint (struct breakpoint *bpt, void *ignore)
+do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg)
+{
+ enum bpdisp disp = *(enum bpdisp *) arg;
+
+ enable_breakpoint_disp (bpt, disp);
+}
+
+static void
+do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore)
{
- do_enable_breakpoint (bpt, disp_disable);
+ enum bpdisp disp = disp_disable;
+
+ iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp);
}
static void
enable_once_command (char *args, int from_tty)
{
- map_breakpoint_numbers (args, enable_once_breakpoint, NULL);
+ map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL);
}
static void
-enable_delete_breakpoint (struct breakpoint *bpt, void *ignore)
+do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore)
{
- do_enable_breakpoint (bpt, disp_del);
+ enum bpdisp disp = disp_del;
+
+ iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp);
}
static void
enable_delete_command (char *args, int from_tty)
{
- map_breakpoint_numbers (args, enable_delete_breakpoint, NULL);
+ map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL);
}
\f
static void
ALL_BREAKPOINTS (bp)
if (bp->enable_state == bp_enabled
- && bp->type == bp_hardware_watchpoint
- && bp->val_valid && bp->val)
+ && bp->type == bp_hardware_watchpoint)
{
- struct bp_location *loc;
+ struct watchpoint *wp = (struct watchpoint *) bp;
- for (loc = bp->loc; loc != NULL; loc = loc->next)
- if (loc->loc_type == bp_loc_hardware_watchpoint
- && loc->address + loc->length > addr
- && addr + len > loc->address)
- {
- value_free (bp->val);
- bp->val = NULL;
- bp->val_valid = 0;
- }
+ if (wp->val_valid && wp->val)
+ {
+ struct bp_location *loc;
+
+ for (loc = bp->loc; loc != NULL; loc = loc->next)
+ if (loc->loc_type == bp_loc_hardware_watchpoint
+ && loc->address + loc->length > addr
+ && addr + len > loc->address)
+ {
+ value_free (wp->val);
+ wp->val = NULL;
+ wp->val_valid = 0;
+ }
+ }
}
}
sals = decode_line_1 (&string, funfirstline,
default_breakpoint_symtab,
default_breakpoint_line,
- (char ***) NULL, NULL);
+ NULL);
else
sals = decode_line_1 (&string, funfirstline,
- (struct symtab *) NULL, 0, (char ***) NULL, NULL);
+ (struct symtab *) NULL, 0, NULL);
if (*string)
error (_("Junk at end of line specification: %s"), string);
return sals;
return bp_tgt;
}
-/* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */
+/* Remove a breakpoint BP inserted by
+ deprecated_insert_raw_breakpoint. */
int
deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp)
return ret;
}
-/* One (or perhaps two) breakpoints used for software single stepping. */
+/* One (or perhaps two) breakpoints used for software single
+ stepping. */
static void *single_step_breakpoints[2];
static struct gdbarch *single_step_gdbarch[2];
void
insert_single_step_breakpoint (struct gdbarch *gdbarch,
- struct address_space *aspace, CORE_ADDR next_pc)
+ struct address_space *aspace,
+ CORE_ADDR next_pc)
{
void **bpt_p;
single_step_gdbarch[1] = gdbarch;
}
- /* NOTE drow/2006-04-11: A future improvement to this function would be
- to only create the breakpoints once, and actually put them on the
- breakpoint chain. That would let us use set_raw_breakpoint. We could
- adjust the addresses each time they were needed. Doing this requires
- corresponding changes elsewhere where single step breakpoints are
- handled, however. So, for now, we use this. */
+ /* NOTE drow/2006-04-11: A future improvement to this function would
+ be to only create the breakpoints once, and actually put them on
+ the breakpoint chain. That would let us use set_raw_breakpoint.
+ We could adjust the addresses each time they were needed. Doing
+ this requires corresponding changes elsewhere where single step
+ breakpoints are handled, however. So, for now, we use this. */
*bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc);
if (*bpt_p == NULL)
single_step_breakpoints[i]);
}
-/* Check whether a software single-step breakpoint is inserted at PC. */
+/* Check whether a software single-step breakpoint is inserted at
+ PC. */
static int
single_step_breakpoint_inserted_here_p (struct address_space *aspace,
ALL_BREAKPOINTS (bp)
if (is_syscall_catchpoint_enabled (bp))
{
- if (bp->syscalls_to_be_caught)
+ struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp;
+
+ if (c->syscalls_to_be_caught)
{
int i, iter;
for (i = 0;
- VEC_iterate (int, bp->syscalls_to_be_caught, i, iter);
+ VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
i++)
if (syscall_number == iter)
return 1;
char *text, char *word)
{
const char **list = get_syscall_names ();
+ char **retlist
+ = (list == NULL) ? NULL : complete_on_enum (list, text, word);
- return (list == NULL) ? NULL : complete_on_enum (list, text, word);
+ xfree (list);
+ return retlist;
}
/* Tracepoint-specific operations. */
bp_tracepoint /* type_wanted */,
0 /* Ignore count */,
pending_break_support,
- NULL,
+ &tracepoint_breakpoint_ops,
from_tty,
1 /* enabled */,
0 /* internal */))
bp_fast_tracepoint /* type_wanted */,
0 /* Ignore count */,
pending_break_support,
- NULL,
+ &tracepoint_breakpoint_ops,
from_tty,
1 /* enabled */,
0 /* internal */))
bp_static_tracepoint /* type_wanted */,
0 /* Ignore count */,
pending_break_support,
- NULL,
+ &tracepoint_breakpoint_ops,
from_tty,
1 /* enabled */,
0 /* internal */))
the target does not necessarily have all the information used when
the tracepoint was originally defined. */
-struct breakpoint *
+struct tracepoint *
create_tracepoint_from_upload (struct uploaded_tp *utp)
{
char *addr_str, small_buf[100];
- struct breakpoint *tp;
+ struct tracepoint *tp;
if (utp->at_string)
addr_str = utp->at_string;
address. Since there is no way to confirm that the address
means the same thing as when the trace was started, warn the
user. */
- warning (_("Uploaded tracepoint %d has no source location, using raw address"),
+ warning (_("Uploaded tracepoint %d has no "
+ "source location, using raw address"),
utp->number);
sprintf (small_buf, "*%s", hex_string (utp->addr));
addr_str = small_buf;
/* There's not much we can do with a sequence of bytecodes. */
if (utp->cond && !utp->cond_string)
- warning (_("Uploaded tracepoint %d condition has no source form, ignoring it"),
+ warning (_("Uploaded tracepoint %d condition "
+ "has no source form, ignoring it"),
utp->number);
if (!create_breakpoint (get_current_arch (),
utp->type /* type_wanted */,
0 /* Ignore count */,
pending_break_support,
- NULL,
+ &tracepoint_breakpoint_ops,
0 /* from_tty */,
utp->enabled /* enabled */,
0 /* internal */))
if (utp->pass > 0)
{
- sprintf (small_buf, "%d %d", utp->pass, tp->number);
+ sprintf (small_buf, "%d %d", utp->pass, tp->base.number);
trace_pass_command (small_buf, 0);
}
cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL);
- breakpoint_set_commands (tp, cmd_list);
+ breakpoint_set_commands (&tp->base, cmd_list);
}
else if (!VEC_empty (char_ptr, utp->actions)
|| !VEC_empty (char_ptr, utp->step_actions))
- warning (_("Uploaded tracepoint %d actions have no source form, ignoring them"),
+ warning (_("Uploaded tracepoint %d actions "
+ "have no source form, ignoring them"),
utp->number);
return tp;
- }
+}
/* Print information on tracepoint number TPNUM_EXP, or all if
omitted. */
static void
-tracepoints_info (char *tpnum_exp, int from_tty)
+tracepoints_info (char *args, int from_tty)
{
- int tpnum = -1, num_printed;
-
- if (tpnum_exp)
- tpnum = parse_and_eval_long (tpnum_exp);
+ struct ui_out *uiout = current_uiout;
+ int num_printed;
- num_printed = breakpoint_1 (tpnum, 0, is_tracepoint);
+ num_printed = breakpoint_1 (args, 0, is_tracepoint);
if (num_printed == 0)
{
- if (tpnum == -1)
+ if (args == NULL || *args == '\0')
ui_out_message (uiout, 0, "No tracepoints.\n");
else
- ui_out_message (uiout, 0, "No tracepoint number %d.\n", tpnum);
+ ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args);
}
default_collect_info ();
}
-/* The 'enable trace' command enables tracepoints.
+/* The 'enable trace' command enables tracepoints.
Not supported by all targets. */
static void
enable_trace_command (char *args, int from_tty)
enable_command (args, from_tty);
}
-/* The 'disable trace' command disables tracepoints.
+/* The 'disable trace' command disables tracepoints.
Not supported by all targets. */
static void
disable_trace_command (char *args, int from_tty)
disable_command (args, from_tty);
}
-/* Remove a tracepoint (or all if no argument) */
+/* Remove a tracepoint (or all if no argument). */
static void
delete_trace_command (char *arg, int from_tty)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
dont_repeat ();
/* 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. */
+ have to be deleted with an explicit breakpoint number
+ argument. */
ALL_TRACEPOINTS (b)
- {
- if (b->number >= 0)
+ if (is_tracepoint (b) && user_breakpoint_p (b))
{
breaks_to_delete = 1;
break;
}
- }
/* Ask user only if there are some breakpoints to delete. */
if (!from_tty
|| (breaks_to_delete && query (_("Delete all tracepoints? "))))
{
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (is_tracepoint (b)
- && b->number >= 0)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
+ if (is_tracepoint (b) && user_breakpoint_p (b))
delete_breakpoint (b);
- }
}
}
else
- map_breakpoint_numbers (arg, do_delete_breakpoint, NULL);
+ map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL);
+}
+
+/* Helper function for trace_pass_command. */
+
+static void
+trace_pass_set_count (struct tracepoint *tp, int count, int from_tty)
+{
+ tp->pass_count = count;
+ observer_notify_tracepoint_modified (tp->base.number);
+ if (from_tty)
+ printf_filtered (_("Setting tracepoint %d's passcount to %d\n"),
+ tp->base.number, count);
}
/* Set passcount for tracepoint.
static void
trace_pass_command (char *args, int from_tty)
{
- struct breakpoint *t1 = (struct breakpoint *) -1, *t2;
+ struct tracepoint *t1;
unsigned int count;
- int all = 0;
if (args == 0 || *args == 0)
- error (_("passcount command requires an argument (count + optional TP num)"));
+ error (_("passcount command requires an "
+ "argument (count + optional TP num)"));
- count = strtoul (args, &args, 10); /* Count comes first, then TP num. */
+ count = strtoul (args, &args, 10); /* Count comes first, then TP num. */
while (*args && isspace ((int) *args))
args++;
if (*args && strncasecmp (args, "all", 3) == 0)
{
+ struct breakpoint *b;
+
args += 3; /* Skip special argument "all". */
- all = 1;
if (*args)
error (_("Junk at end of arguments."));
- }
- else
- t1 = get_tracepoint_by_number (&args, 1, 1);
- do
+ ALL_TRACEPOINTS (b)
+ {
+ t1 = (struct tracepoint *) b;
+ trace_pass_set_count (t1, count, from_tty);
+ }
+ }
+ else if (*args == '\0')
{
+ t1 = get_tracepoint_by_number (&args, NULL, 1);
if (t1)
+ trace_pass_set_count (t1, count, from_tty);
+ }
+ else
+ {
+ struct get_number_or_range_state state;
+
+ init_number_or_range (&state, args);
+ while (!state.finished)
{
- ALL_TRACEPOINTS (t2)
- if (t1 == (struct breakpoint *) -1 || t1 == t2)
- {
- t2->pass_count = count;
- observer_notify_tracepoint_modified (t2->number);
- if (from_tty)
- printf_filtered (_("Setting tracepoint %d's passcount to %d\n"),
- t2->number, count);
- }
- if (! all && *args)
- t1 = get_tracepoint_by_number (&args, 1, 0);
+ t1 = get_tracepoint_by_number (&args, &state, 1);
+ if (t1)
+ trace_pass_set_count (t1, count, from_tty);
}
}
- while (*args);
}
-struct breakpoint *
+struct tracepoint *
get_tracepoint (int num)
{
struct breakpoint *t;
ALL_TRACEPOINTS (t)
if (t->number == num)
- return t;
+ return (struct tracepoint *) t;
return NULL;
}
different from the tracepoint number after disconnecting and
reconnecting). */
-struct breakpoint *
+struct tracepoint *
get_tracepoint_by_number_on_target (int num)
{
- struct breakpoint *t;
+ struct breakpoint *b;
- ALL_TRACEPOINTS (t)
- if (t->number_on_target == num)
- return t;
+ ALL_TRACEPOINTS (b)
+ {
+ struct tracepoint *t = (struct tracepoint *) b;
+
+ if (t->number_on_target == num)
+ return t;
+ }
return NULL;
}
/* Utility: parse a tracepoint number and look it up in the list.
- If MULTI_P is true, there might be a range of tracepoints in ARG.
- if OPTIONAL_P is true, then if the argument is missing, the most
+ If STATE is not NULL, use, get_number_or_range_state and ignore ARG.
+ If OPTIONAL_P is true, then if the argument is missing, the most
recent tracepoint (tracepoint_count) is returned. */
-struct breakpoint *
-get_tracepoint_by_number (char **arg, int multi_p, int optional_p)
+struct tracepoint *
+get_tracepoint_by_number (char **arg,
+ struct get_number_or_range_state *state,
+ int optional_p)
{
extern int tracepoint_count;
struct breakpoint *t;
int tpnum;
char *instring = arg == NULL ? NULL : *arg;
- if (arg == NULL || *arg == NULL || ! **arg)
+ if (state)
+ {
+ gdb_assert (!state->finished);
+ tpnum = get_number_or_range (state);
+ }
+ else if (arg == NULL || *arg == NULL || ! **arg)
{
if (optional_p)
tpnum = tracepoint_count;
error_no_arg (_("tracepoint number"));
}
else
- tpnum = multi_p ? get_number_or_range (arg) : get_number (arg);
+ tpnum = get_number (arg);
if (tpnum <= 0)
{
printf_filtered (_("bad tracepoint number at or near '%s'\n"),
instring);
else
- printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n"));
+ printf_filtered (_("Tracepoint argument missing "
+ "and no previous tracepoint\n"));
return NULL;
}
ALL_TRACEPOINTS (t)
if (t->number == tpnum)
{
- return t;
+ return (struct tracepoint *) t;
}
- /* FIXME: if we are in the middle of a range we don't want to give
- a message. The current interface to get_number_or_range doesn't
- allow us to discover this. */
printf_unfiltered ("No tracepoint number %d.\n", tpnum);
return NULL;
}
+void
+print_recreate_thread (struct breakpoint *b, struct ui_file *fp)
+{
+ if (b->thread != -1)
+ fprintf_unfiltered (fp, " thread %d", b->thread);
+
+ if (b->task != 0)
+ fprintf_unfiltered (fp, " task %d", b->task);
+
+ fprintf_unfiltered (fp, "\n");
+}
+
/* Save information on user settable breakpoints (watchpoints, etc) to
a new script file named FILENAME. If FILTER is non-NULL, call it
on each breakpoint and only include the ones for which it returns
ALL_BREAKPOINTS (tp)
{
/* Skip internal and momentary breakpoints. */
- if (!user_settable_breakpoint (tp) || tp->number < 0)
+ if (!user_breakpoint_p (tp))
continue;
/* If we have a filter, only save the breakpoints it accepts. */
ALL_BREAKPOINTS (tp)
{
/* Skip internal and momentary breakpoints. */
- if (!user_settable_breakpoint (tp) || tp->number < 0)
+ if (!user_breakpoint_p (tp))
continue;
/* If we have a filter, only save the breakpoints it accepts. */
if (filter && !filter (tp))
continue;
- if (tp->ops != NULL)
- (tp->ops->print_recreate) (tp, fp);
- else
- {
- if (tp->type == bp_fast_tracepoint)
- fprintf_unfiltered (fp, "ftrace");
- if (tp->type == bp_static_tracepoint)
- fprintf_unfiltered (fp, "strace");
- else if (tp->type == bp_tracepoint)
- fprintf_unfiltered (fp, "trace");
- else if (tp->type == bp_breakpoint && tp->disposition == disp_del)
- fprintf_unfiltered (fp, "tbreak");
- else if (tp->type == bp_breakpoint)
- fprintf_unfiltered (fp, "break");
- else if (tp->type == bp_hardware_breakpoint
- && tp->disposition == disp_del)
- fprintf_unfiltered (fp, "thbreak");
- else if (tp->type == bp_hardware_breakpoint)
- fprintf_unfiltered (fp, "hbreak");
- else if (tp->type == bp_watchpoint)
- fprintf_unfiltered (fp, "watch");
- else if (tp->type == bp_hardware_watchpoint)
- fprintf_unfiltered (fp, "watch");
- else if (tp->type == bp_read_watchpoint)
- fprintf_unfiltered (fp, "rwatch");
- else if (tp->type == bp_access_watchpoint)
- fprintf_unfiltered (fp, "awatch");
- else
- internal_error (__FILE__, __LINE__,
- _("unhandled breakpoint type %d"), (int) tp->type);
-
- if (tp->exp_string)
- fprintf_unfiltered (fp, " %s", tp->exp_string);
- else if (tp->addr_string)
- fprintf_unfiltered (fp, " %s", tp->addr_string);
- else
- {
- char tmp[40];
-
- sprintf_vma (tmp, tp->loc->address);
- fprintf_unfiltered (fp, " *0x%s", tmp);
- }
- }
-
- if (tp->thread != -1)
- fprintf_unfiltered (fp, " thread %d", tp->thread);
-
- if (tp->task != 0)
- fprintf_unfiltered (fp, " task %d", tp->task);
-
- fprintf_unfiltered (fp, "\n");
+ tp->ops->print_recreate (tp, fp);
/* Note, we can't rely on tp->number for anything, as we can't
assume the recreated breakpoint numbers will match. Use $bpnum
if (tp->ignore_count)
fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count);
- if (tp->pass_count)
- fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count);
-
if (tp->commands)
{
volatile struct gdb_exception ex;
fprintf_unfiltered (fp, " commands\n");
- ui_out_redirect (uiout, fp);
+ ui_out_redirect (current_uiout, fp);
TRY_CATCH (ex, RETURN_MASK_ALL)
{
- print_command_lines (uiout, tp->commands->commands, 2);
+ print_command_lines (current_uiout, tp->commands->commands, 2);
}
- ui_out_redirect (uiout, NULL);
+ ui_out_redirect (current_uiout, NULL);
if (ex.reason < 0)
throw_exception (ex);
/* Create a vector of all tracepoints. */
VEC(breakpoint_p) *
-all_tracepoints ()
+all_tracepoints (void)
{
VEC(breakpoint_p) *tp_vec = 0;
struct breakpoint *tp;
}
\f
-/* This help string is used for the break, hbreak, tbreak and thbreak commands.
- It is defined as a macro to prevent duplication.
- COMMAND should be a string constant containing the name of the command. */
+/* This help string is used for the break, hbreak, tbreak and thbreak
+ commands. It is defined as a macro to prevent duplication.
+ COMMAND should be a string constant containing the name of the
+ command. */
#define BREAK_ARGS_HELP(command) \
command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\
LOCATION may be a line number, function name, or \"*\" and an address.\n\
/* List of subcommands for "tcatch". */
static struct cmd_list_element *tcatch_cmdlist;
-/* Like add_cmd, but add the command to both the "catch" and "tcatch"
- lists, and pass some additional user data to the command function. */
-static void
+void
add_catch_command (char *name, char *docstring,
void (*sfunc) (char *args, int from_tty,
struct cmd_list_element *command),
static void
save_command (char *arg, int from_tty)
{
- printf_unfiltered (_("\
-\"save\" must be followed by the name of a save subcommand.\n"));
+ printf_unfiltered (_("\"save\" must be followed by "
+ "the name of a save subcommand.\n"));
help_list (save_cmdlist, "save ", -1, gdb_stdout);
}
iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *),
void *data)
{
- struct breakpoint *b, *temp;
+ struct breakpoint *b, *b_tmp;
- ALL_BREAKPOINTS_SAFE (b, temp)
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
{
if ((*callback) (b, data))
return b;
return NULL;
}
+void
+initialize_breakpoint_ops (void)
+{
+ static int initialized = 0;
+
+ struct breakpoint_ops *ops;
+
+ if (initialized)
+ return;
+ initialized = 1;
+
+ /* The breakpoint_ops structure to be inherit by all kinds of
+ breakpoints (real breakpoints, i.e., user "break" breakpoints,
+ internal and momentary breakpoints, etc.). */
+ ops = &bkpt_base_breakpoint_ops;
+ *ops = base_breakpoint_ops;
+ ops->re_set = bkpt_re_set;
+ ops->insert_location = bkpt_insert_location;
+ ops->remove_location = bkpt_remove_location;
+ ops->breakpoint_hit = bkpt_breakpoint_hit;
+
+ /* The breakpoint_ops structure to be used in regular breakpoints. */
+ ops = &bkpt_breakpoint_ops;
+ *ops = bkpt_base_breakpoint_ops;
+ ops->re_set = bkpt_re_set;
+ ops->resources_needed = bkpt_resources_needed;
+ ops->print_it = bkpt_print_it;
+ ops->print_mention = bkpt_print_mention;
+ ops->print_recreate = bkpt_print_recreate;
+
+ /* Ranged breakpoints. */
+ ops = &ranged_breakpoint_ops;
+ *ops = bkpt_breakpoint_ops;
+ ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint;
+ ops->resources_needed = resources_needed_ranged_breakpoint;
+ ops->print_it = print_it_ranged_breakpoint;
+ ops->print_one = print_one_ranged_breakpoint;
+ ops->print_one_detail = print_one_detail_ranged_breakpoint;
+ ops->print_mention = print_mention_ranged_breakpoint;
+ ops->print_recreate = print_recreate_ranged_breakpoint;
+
+ /* Internal breakpoints. */
+ ops = &internal_breakpoint_ops;
+ *ops = bkpt_base_breakpoint_ops;
+ ops->re_set = internal_bkpt_re_set;
+ ops->check_status = internal_bkpt_check_status;
+ ops->print_it = internal_bkpt_print_it;
+ ops->print_mention = internal_bkpt_print_mention;
+
+ /* Momentary breakpoints. */
+ ops = &momentary_breakpoint_ops;
+ *ops = bkpt_base_breakpoint_ops;
+ ops->re_set = momentary_bkpt_re_set;
+ ops->check_status = momentary_bkpt_check_status;
+ ops->print_it = momentary_bkpt_print_it;
+ ops->print_mention = momentary_bkpt_print_mention;
+
+ /* GNU v3 exception catchpoints. */
+ ops = &gnu_v3_exception_catchpoint_ops;
+ *ops = bkpt_breakpoint_ops;
+ ops->print_it = print_it_exception_catchpoint;
+ ops->print_one = print_one_exception_catchpoint;
+ ops->print_mention = print_mention_exception_catchpoint;
+ ops->print_recreate = print_recreate_exception_catchpoint;
+
+ /* Watchpoints. */
+ ops = &watchpoint_breakpoint_ops;
+ *ops = base_breakpoint_ops;
+ ops->dtor = dtor_watchpoint;
+ ops->re_set = re_set_watchpoint;
+ ops->insert_location = insert_watchpoint;
+ ops->remove_location = remove_watchpoint;
+ ops->breakpoint_hit = breakpoint_hit_watchpoint;
+ ops->check_status = check_status_watchpoint;
+ ops->resources_needed = resources_needed_watchpoint;
+ ops->works_in_software_mode = works_in_software_mode_watchpoint;
+ ops->print_it = print_it_watchpoint;
+ ops->print_mention = print_mention_watchpoint;
+ ops->print_recreate = print_recreate_watchpoint;
+
+ /* Masked watchpoints. */
+ ops = &masked_watchpoint_breakpoint_ops;
+ *ops = watchpoint_breakpoint_ops;
+ ops->insert_location = insert_masked_watchpoint;
+ ops->remove_location = remove_masked_watchpoint;
+ ops->resources_needed = resources_needed_masked_watchpoint;
+ ops->works_in_software_mode = works_in_software_mode_masked_watchpoint;
+ ops->print_it = print_it_masked_watchpoint;
+ ops->print_one_detail = print_one_detail_masked_watchpoint;
+ ops->print_mention = print_mention_masked_watchpoint;
+ ops->print_recreate = print_recreate_masked_watchpoint;
+
+ /* Tracepoints. */
+ ops = &tracepoint_breakpoint_ops;
+ *ops = base_breakpoint_ops;
+ ops->re_set = tracepoint_re_set;
+ ops->breakpoint_hit = tracepoint_breakpoint_hit;
+ ops->print_one_detail = tracepoint_print_one_detail;
+ ops->print_mention = tracepoint_print_mention;
+ ops->print_recreate = tracepoint_print_recreate;
+
+ /* Fork catchpoints. */
+ ops = &catch_fork_breakpoint_ops;
+ *ops = base_breakpoint_ops;
+ ops->insert_location = insert_catch_fork;
+ ops->remove_location = remove_catch_fork;
+ ops->breakpoint_hit = breakpoint_hit_catch_fork;
+ ops->print_it = print_it_catch_fork;
+ ops->print_one = print_one_catch_fork;
+ ops->print_mention = print_mention_catch_fork;
+ ops->print_recreate = print_recreate_catch_fork;
+
+ /* Vfork catchpoints. */
+ ops = &catch_vfork_breakpoint_ops;
+ *ops = base_breakpoint_ops;
+ ops->insert_location = insert_catch_vfork;
+ ops->remove_location = remove_catch_vfork;
+ ops->breakpoint_hit = breakpoint_hit_catch_vfork;
+ ops->print_it = print_it_catch_vfork;
+ ops->print_one = print_one_catch_vfork;
+ ops->print_mention = print_mention_catch_vfork;
+ ops->print_recreate = print_recreate_catch_vfork;
+
+ /* Exec catchpoints. */
+ ops = &catch_exec_breakpoint_ops;
+ *ops = base_breakpoint_ops;
+ ops->dtor = dtor_catch_exec;
+ ops->insert_location = insert_catch_exec;
+ ops->remove_location = remove_catch_exec;
+ ops->breakpoint_hit = breakpoint_hit_catch_exec;
+ ops->print_it = print_it_catch_exec;
+ ops->print_one = print_one_catch_exec;
+ ops->print_mention = print_mention_catch_exec;
+ ops->print_recreate = print_recreate_catch_exec;
+
+ /* Syscall catchpoints. */
+ ops = &catch_syscall_breakpoint_ops;
+ *ops = base_breakpoint_ops;
+ ops->dtor = dtor_catch_syscall;
+ ops->insert_location = insert_catch_syscall;
+ ops->remove_location = remove_catch_syscall;
+ ops->breakpoint_hit = breakpoint_hit_catch_syscall;
+ ops->print_it = print_it_catch_syscall;
+ ops->print_one = print_one_catch_syscall;
+ ops->print_mention = print_mention_catch_syscall;
+ ops->print_recreate = print_recreate_catch_syscall;
+}
+
void
_initialize_breakpoint (void)
{
struct cmd_list_element *c;
+ initialize_breakpoint_ops ();
+
observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib);
observer_attach_inferior_exit (clear_syscall_counts);
observer_attach_memory_changed (invalidate_bp_value_on_memory_change);
+ breakpoint_objfile_key = register_objfile_data ();
+
breakpoint_chain = 0;
/* Don't bother to call set_breakpoint_count. $bpnum isn't useful
before a breakpoint is set. */
set_cmd_completer (c, location_completer);
c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\
-Set a hardware assisted breakpoint.\n\
+Set a hardware assisted breakpoint.\n\
Like \"break\" except the breakpoint requires hardware support,\n\
some target hardware may not have this support.\n\
\n"
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."),
+A disabled breakpoint is not forgotten, but has no effect until re-enabled."),
&disablelist, "disable ", 1, &cmdlist);
add_com_alias ("dis", "disable", class_breakpoint, 1);
add_com_alias ("disa", "disable", class_breakpoint, 1);
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."));
+A disabled breakpoint is not forgotten, but has no effect until re-enabled."));
add_cmd ("breakpoints", class_alias, 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.\n\
+A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\
This command may be abbreviated \"disable\"."),
&disablelist);
}
add_info ("breakpoints", breakpoints_info, _("\
-Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+Status of specified breakpoints (all user-settable breakpoints if no argument).\n\
The \"Type\" column indicates one of:\n\
\tbreakpoint - normal breakpoint\n\
\twatchpoint - watchpoint\n\
catch_syscall_completer,
CATCH_PERMANENT,
CATCH_TEMPORARY);
- add_catch_command ("exception", _("\
-Catch Ada exceptions, when raised.\n\
-With an argument, catch only exceptions with the given name."),
- catch_ada_exception_command,
- NULL,
- CATCH_PERMANENT,
- CATCH_TEMPORARY);
- add_catch_command ("assert", _("\
-Catch failed Ada assertions, when raised.\n\
-With an argument, catch only exceptions with the given name."),
- catch_assert_command,
- NULL,
- CATCH_PERMANENT,
- CATCH_TEMPORARY);
c = add_com ("watch", class_breakpoint, watch_command, _("\
Set a watchpoint for an expression.\n\
set_cmd_completer (c, expression_completer);
add_info ("watchpoints", watchpoints_info, _("\
-Status of watchpoints, or watchpoint number NUMBER."));
-
-
+Status of specified watchpoints (all watchpoints if no argument)."));
/* XXX: cagney/2005-02-23: This should be a boolean, and should
respond to changes - contrary to the description. */
set_cmd_completer (c, location_completer);
add_info ("tracepoints", tracepoints_info, _("\
-Status of tracepoints, or tracepoint number NUMBER.\n\
+Status of specified tracepoints (all tracepoints if no argument).\n\
Convenience variable \"$tpnum\" contains the number of the\n\
last tracepoint set."));
&show_always_inserted_mode,
&breakpoint_set_cmdlist,
&breakpoint_show_cmdlist);
-
+
+ add_com ("break-range", class_breakpoint, break_range_command, _("\
+Set a breakpoint for an address range.\n\
+break-range START-LOCATION, END-LOCATION\n\
+where START-LOCATION and END-LOCATION can be one of the following:\n\
+ LINENUM, for that line in the current file,\n\
+ FILE:LINENUM, for that line in that file,\n\
+ +OFFSET, for that number of lines after the current line\n\
+ or the start of the range\n\
+ FUNCTION, for the first line in that function,\n\
+ FILE:FUNCTION, to distinguish among like-named static functions.\n\
+ *ADDRESS, for the instruction at that address.\n\
+\n\
+The breakpoint will stop execution of the inferior whenever it executes\n\
+an instruction at any address within the [START-LOCATION, END-LOCATION]\n\
+range (including START-LOCATION and END-LOCATION)."));
+
automatic_hardware_breakpoints = 1;
observer_attach_about_to_proceed (breakpoint_about_to_proceed);
projects / deliverable / binutils-gdb.git / blobdiff