/* Everything about breakpoints, for GDB.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
#include <ctype.h>
#include "gdbcore.h"
#include "gdbcmd.h"
#include "value.h"
-#include "ctype.h"
#include "command.h"
#include "inferior.h"
-#include "thread.h"
+#include "gdbthread.h"
#include "target.h"
#include "language.h"
-#include <string.h>
+#include "gdb_string.h"
#include "demangle.h"
+#include "annotate.h"
+#include "symfile.h"
+#include "objfiles.h"
+#ifdef UI_OUT
+#include "ui-out.h"
+#endif
-/* local function prototypes */
+#include "gdb-events.h"
-static void
-catch_command_1 PARAMS ((char *, int, int));
+/* Prototypes for local functions. */
-static void
-enable_delete_command PARAMS ((char *, int));
+static void until_break_command_continuation (struct continuation_arg *arg);
-static void
-enable_delete_breakpoint PARAMS ((struct breakpoint *));
+static void catch_command_1 (char *, int, int);
-static void
-enable_once_command PARAMS ((char *, int));
+static void enable_delete_command (char *, int);
-static void
-enable_once_breakpoint PARAMS ((struct breakpoint *));
+static void enable_delete_breakpoint (struct breakpoint *);
-static void
-disable_command PARAMS ((char *, int));
+static void enable_once_command (char *, int);
-static void
-disable_breakpoint PARAMS ((struct breakpoint *));
+static void enable_once_breakpoint (struct breakpoint *);
-static void
-enable_command PARAMS ((char *, int));
+static void disable_command (char *, int);
-static void
-enable_breakpoint PARAMS ((struct breakpoint *));
+static void enable_command (char *, int);
-static void
-map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *)));
+static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *));
-static void
-ignore_command PARAMS ((char *, int));
+static void ignore_command (char *, int);
-static int
-breakpoint_re_set_one PARAMS ((char *));
+static int breakpoint_re_set_one (PTR);
-static void
-delete_command PARAMS ((char *, int));
+static void clear_command (char *, int);
-static void
-clear_command PARAMS ((char *, int));
+static void catch_command (char *, int);
-static void
-catch_command PARAMS ((char *, int));
+static void handle_gnu_4_16_catch_command (char *, int, int);
-static struct symtabs_and_lines
-get_catch_sals PARAMS ((int));
+static struct symtabs_and_lines get_catch_sals (int);
-static void
-watch_command PARAMS ((char *, int));
+static void watch_command (char *, int);
-static void
-tbreak_command PARAMS ((char *, int));
+static int can_use_hardware_watchpoint (struct value *);
-static void
-break_command_1 PARAMS ((char *, int, int));
+static void break_at_finish_command (char *, int);
+static void break_at_finish_at_depth_command (char *, int);
-static void
-mention PARAMS ((struct breakpoint *));
+void tbreak_command (char *, int);
-static struct breakpoint *
-set_raw_breakpoint PARAMS ((struct symtab_and_line));
+static void tbreak_at_finish_command (char *, int);
-static void
-check_duplicates PARAMS ((CORE_ADDR));
+static void break_command_1 (char *, int, int);
-static void
-describe_other_breakpoints PARAMS ((CORE_ADDR));
+static void mention (struct breakpoint *);
-static void
-breakpoints_info PARAMS ((char *, int));
+struct breakpoint *set_raw_breakpoint (struct symtab_and_line);
-static void
-breakpoint_1 PARAMS ((int, int));
+static void check_duplicates (CORE_ADDR, asection *);
-static bpstat
-bpstat_alloc PARAMS ((struct breakpoint *, bpstat));
+static void describe_other_breakpoints (CORE_ADDR, asection *);
-static int
-breakpoint_cond_eval PARAMS ((char *));
+static void breakpoints_info (char *, int);
-static void
-cleanup_executing_breakpoints PARAMS ((int));
+static void breakpoint_1 (int, int);
-static void
-commands_command PARAMS ((char *, int));
+static bpstat bpstat_alloc (struct breakpoint *, bpstat);
-static void
-condition_command PARAMS ((char *, int));
+static int breakpoint_cond_eval (PTR);
-static int
-get_number PARAMS ((char **));
+static void cleanup_executing_breakpoints (PTR);
-static void
-set_breakpoint_count PARAMS ((int));
+static void commands_command (char *, int);
+
+static void condition_command (char *, int);
+
+static int get_number_trailer (char **, int);
+
+void set_breakpoint_count (int);
+
+#if 0
+static struct breakpoint *create_temp_exception_breakpoint (CORE_ADDR);
+#endif
+
+typedef enum
+ {
+ mark_inserted,
+ mark_uninserted
+ }
+insertion_state_t;
+
+static int remove_breakpoint (struct breakpoint *, insertion_state_t);
+
+static enum print_stop_action print_it_typical (bpstat);
+
+static enum print_stop_action print_bp_stop_message (bpstat bs);
+
+typedef struct
+ {
+ enum exception_event_kind kind;
+ int enable;
+ }
+args_for_catchpoint_enable;
+
+static int watchpoint_check (PTR);
+
+static int cover_target_enable_exception_callback (PTR);
+
+static void maintenance_info_breakpoints (char *, int);
+
+#ifdef GET_LONGJMP_TARGET
+static void create_longjmp_breakpoint (char *);
+#endif
+
+static int hw_breakpoint_used_count (void);
+
+static int hw_watchpoint_used_count (enum bptype, int *);
+
+static void hbreak_command (char *, int);
+
+static void thbreak_command (char *, int);
+
+static void watch_command_1 (char *, int, int);
+
+static void rwatch_command (char *, int);
+
+static void awatch_command (char *, int);
+
+static void do_enable_breakpoint (struct breakpoint *, enum bpdisp);
+
+static void solib_load_unload_1 (char *hookname,
+ int tempflag,
+ char *dll_pathname,
+ char *cond_string, enum bptype bp_kind);
+
+static void create_fork_vfork_event_catchpoint (int tempflag,
+ char *cond_string,
+ enum bptype bp_kind);
+
+static void break_at_finish_at_depth_command_1 (char *arg,
+ int flag, int from_tty);
+
+static void break_at_finish_command_1 (char *arg, int flag, int from_tty);
+
+static void stop_command (char *arg, int from_tty);
+static void stopin_command (char *arg, int from_tty);
-extern int addressprint; /* Print machine addresses? */
-extern int demangle; /* Print de-mangled symbol names? */
+static void stopat_command (char *arg, int from_tty);
+
+static char *ep_find_event_name_end (char *arg);
+
+static char *ep_parse_optional_if_clause (char **arg);
+
+static char *ep_parse_optional_filename (char **arg);
+
+#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
+static void catch_exec_command_1 (char *arg, int tempflag, int from_tty);
+#endif
+
+static void create_exception_catchpoint
+ (int tempflag, char *cond_string,
+ enum exception_event_kind ex_event, struct symtab_and_line *sal);
+
+static void catch_exception_command_1
+ (enum exception_event_kind ex_event, char *arg, int tempflag, int from_tty);
+
+static void tcatch_command (char *arg, int from_tty);
+
+static void ep_skip_leading_whitespace (char **s);
+
+/* Prototypes for exported functions. */
+
+static void awatch_command (char *, int);
+
+static void do_enable_breakpoint (struct breakpoint *, enum bpdisp);
+
+/* If FALSE, gdb will not use hardware support for watchpoints, even
+ if such is available. */
+static int can_use_hw_watchpoints;
+
+void _initialize_breakpoint (void);
+
+void set_breakpoint_count (int);
+
+extern int addressprint; /* Print machine addresses? */
+
+static int internal_breakpoint_number = -1;
/* Are we executing breakpoint commands? */
static int executing_breakpoint_commands;
ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
breakpoint. */
-#define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next)
+#define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
+
+#define ALL_BREAKPOINTS_SAFE(B,TMP) \
+ for (B = breakpoint_chain; \
+ B ? (TMP=B->next, 1): 0; \
+ B = TMP)
+
+/* True if SHIFT_INST_REGS defined, false otherwise. */
+
+int must_shift_inst_regs =
+#if defined(SHIFT_INST_REGS)
+1
+#else
+0
+#endif
+ ;
+
+/* True if breakpoint hit counts should be displayed in breakpoint info. */
-#define ALL_BREAKPOINTS_SAFE(b,tmp) \
- for (b = breakpoint_chain; \
- b? (tmp=b->next, 1): 0; \
- b = tmp)
+int show_breakpoint_hit_counts = 1;
/* Chain of all breakpoints defined. */
-static struct breakpoint *breakpoint_chain;
+struct breakpoint *breakpoint_chain;
/* Number of last breakpoint made. */
-static int breakpoint_count;
+int breakpoint_count;
+
+/* Pointer to current exception event record */
+static struct exception_event_record *current_exception_event;
+
+/* Indicator of whether exception catchpoints should be nuked
+ between runs of a program */
+int exception_catchpoints_are_fragile = 0;
+
+/* Indicator of when exception catchpoints set-up should be
+ reinitialized -- e.g. when program is re-run */
+int exception_support_initialized = 0;
+
+/* This function returns a pointer to the string representation of the
+ pathname of the dynamically-linked library that has just been
+ loaded.
+
+ This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
+ or undefined results are guaranteed.
+
+ This string's contents are only valid immediately after the
+ inferior has stopped in the dynamic linker hook, and becomes
+ invalid as soon as the inferior is continued. Clients should make
+ a copy of this string if they wish to continue the inferior and
+ then access the string. */
+
+#ifndef SOLIB_LOADED_LIBRARY_PATHNAME
+#define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
+#endif
+
+/* This function returns a pointer to the string representation of the
+ pathname of the dynamically-linked library that has just been
+ unloaded.
+
+ This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
+ TRUE, or undefined results are guaranteed.
+
+ This string's contents are only valid immediately after the
+ inferior has stopped in the dynamic linker hook, and becomes
+ invalid as soon as the inferior is continued. Clients should make
+ a copy of this string if they wish to continue the inferior and
+ then access the string. */
+
+#ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
+#define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
+#endif
+
+/* This function is called by the "catch load" command. It allows the
+ debugger to be notified by the dynamic linker when a specified
+ library file (or any library file, if filename is NULL) is loaded. */
+
+#ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
+#define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
+ error ("catch of library loads not yet implemented on this platform")
+#endif
+
+/* This function is called by the "catch unload" command. It allows
+ the debugger to be notified by the dynamic linker when a specified
+ library file (or any library file, if filename is NULL) is
+ unloaded. */
+
+#ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
+#define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
+ error ("catch of library unloads not yet implemented on this platform")
+#endif
/* Set breakpoint count to NUM. */
-static void
-set_breakpoint_count (num)
- int num;
+
+void
+set_breakpoint_count (int num)
{
breakpoint_count = num;
set_internalvar (lookup_internalvar ("bpnum"),
value_from_longest (builtin_type_int, (LONGEST) num));
}
+/* Used in run_command to zero the hit count when a new run starts. */
+
+void
+clear_breakpoint_hit_counts (void)
+{
+ struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ b->hit_count = 0;
+}
+
/* Default address, symtab and line to put a breakpoint at
for "break" command with no arg.
if default_breakpoint_valid is zero, the other three are
CORE_ADDR default_breakpoint_address;
struct symtab *default_breakpoint_symtab;
int default_breakpoint_line;
-
-/* Flag indicating extra verbosity for xgdb. */
-extern int xgdb_verbose;
\f
/* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
Advance *PP after the string and any trailing whitespace.
Currently the string can either be a number or "$" followed by the name
of a convenience variable. Making it an expression wouldn't work well
- for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */
+ for map_breakpoint_numbers (e.g. "4 + 5 + 6").
+
+ TRAILER is a character which can be found after the number; most
+ commonly this is `-'. If you don't want a trailer, use \0. */
static int
-get_number (pp)
- char **pp;
+get_number_trailer (char **pp, int trailer)
{
- int retval;
+ int retval = 0; /* default */
char *p = *pp;
if (p == NULL)
else if (*p == '$')
{
/* Make a copy of the name, so we can null-terminate it
- to pass to lookup_internalvar(). */
+ to pass to lookup_internalvar(). */
char *varname;
char *start = ++p;
value_ptr val;
strncpy (varname, start, p - start);
varname[p - start] = '\0';
val = value_of_internalvar (lookup_internalvar (varname));
- if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT)
- error (
-"Convenience variables used to specify breakpoints must have integer values."
- );
- retval = (int) value_as_long (val);
+ if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT)
+ retval = (int) value_as_long (val);
+ else
+ {
+ printf_filtered ("Convenience variable must have integer value.\n");
+ retval = 0;
+ }
}
else
{
++p;
if (p == *pp)
/* There is no number here. (e.g. "cond a == b"). */
- error_no_arg ("breakpoint number");
- retval = atoi (*pp);
+ {
+ /* 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;
}
- if (!(isspace (*p) || *p == '\0'))
- error ("breakpoint number expected");
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;
+}
+
+
\f
/* condition N EXP -- set break condition of breakpoint N to EXP. */
static void
-condition_command (arg, from_tty)
- char *arg;
- int from_tty;
+condition_command (char *arg, int from_tty)
{
register struct breakpoint *b;
char *p;
p = arg;
bnum = get_number (&p);
+ if (bnum == 0)
+ error ("Bad breakpoint argument: '%s'", arg);
ALL_BREAKPOINTS (b)
if (b->number == bnum)
- {
- if (b->cond)
- {
- free ((PTR)b->cond);
- b->cond = 0;
- }
- if (b->cond_string != NULL)
- free ((PTR)b->cond_string);
+ {
+ if (b->cond)
+ {
+ free ((PTR) b->cond);
+ b->cond = 0;
+ }
+ if (b->cond_string != NULL)
+ free ((PTR) b->cond_string);
- if (*p == 0)
- {
- b->cond = 0;
- b->cond_string = NULL;
- if (from_tty)
- printf_filtered ("Breakpoint %d now unconditional.\n", bnum);
- }
- else
- {
- arg = p;
- /* I don't know if it matters whether this is the string the user
- typed in or the decompiled expression. */
- b->cond_string = savestring (arg, strlen (arg));
- b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0);
- if (*arg)
- error ("Junk at end of expression");
- }
- return;
- }
+ if (*p == 0)
+ {
+ b->cond = 0;
+ b->cond_string = NULL;
+ if (from_tty)
+ printf_filtered ("Breakpoint %d now unconditional.\n", bnum);
+ }
+ else
+ {
+ arg = p;
+ /* I don't know if it matters whether this is the string the user
+ typed in or the decompiled expression. */
+ b->cond_string = savestring (arg, strlen (arg));
+ b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0);
+ if (*arg)
+ error ("Junk at end of expression");
+ }
+ breakpoints_changed ();
+ return;
+ }
error ("No breakpoint number %d.", bnum);
}
/* ARGSUSED */
static void
-commands_command (arg, from_tty)
- char *arg;
- int from_tty;
+commands_command (char *arg, int from_tty)
{
register struct breakpoint *b;
char *p;
p = arg;
bnum = get_number (&p);
+
if (p && *p)
error ("Unexpected extra arguments following breakpoint number.");
-
+
ALL_BREAKPOINTS (b)
if (b->number == bnum)
- {
- if (from_tty && input_from_terminal_p ())
- printf_filtered ("Type commands for when breakpoint %d is hit, one per line.\n\
-End with a line saying just \"end\".\n", bnum);
- l = read_command_lines ();
- free_command_lines (&b->commands);
- b->commands = l;
- return;
- }
+ {
+ char tmpbuf[128];
+ sprintf (tmpbuf,
+ "Type commands for when breakpoint %d is hit, one per line.",
+ bnum);
+ l = read_command_lines (tmpbuf, from_tty);
+ free_command_lines (&b->commands);
+ b->commands = l;
+ breakpoints_changed ();
+ return;
+ }
error ("No breakpoint number %d.", bnum);
}
\f
-extern int memory_breakpoint_size; /* from mem-break.c */
-
/* Like target_read_memory() but if breakpoints are inserted, return
the shadow contents instead of the breakpoints themselves.
shadow contents, not the breakpoints themselves. From breakpoint.c. */
int
-read_memory_nobpt (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- unsigned len;
+read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len)
{
int status;
struct breakpoint *b;
+ CORE_ADDR bp_addr = 0;
+ int bp_size = 0;
- if (memory_breakpoint_size < 0)
- /* No breakpoints on this machine. FIXME: This should be
- dependent on the debugging target. Probably want
- target_insert_breakpoint to return a size, saying how many
- bytes of the shadow contents are used, or perhaps have
- something like target_xfer_shadow. */
+ if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL)
+ /* No breakpoints on this machine. */
return target_read_memory (memaddr, myaddr, len);
-
+
ALL_BREAKPOINTS (b)
+ {
+ if (b->type == bp_none)
+ warning ("reading through apparently deleted breakpoint #%d?",
+ b->number);
+
+ /* memory breakpoint? */
+ if (b->type == bp_watchpoint
+ || b->type == bp_hardware_watchpoint
+ || b->type == bp_read_watchpoint
+ || b->type == bp_access_watchpoint)
+ continue;
+ /* bp in memory? */
+ if (!b->inserted)
+ continue;
+ /* Addresses and length of the part of the breakpoint that
+ we need to copy. */
+ /* XXXX The m68k, sh and h8300 have different local and remote
+ breakpoint values. BREAKPOINT_FROM_PC still manages to
+ correctly determine the breakpoints memory address and size
+ for these targets. */
+ bp_addr = b->address;
+ bp_size = 0;
+ if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL)
+ continue;
+ if (bp_size == 0)
+ /* bp isn't valid */
+ continue;
+ if (bp_addr + bp_size <= memaddr)
+ /* The breakpoint is entirely before the chunk of memory we
+ are reading. */
+ continue;
+ if (bp_addr >= memaddr + len)
+ /* The breakpoint is entirely after the chunk of memory we are
+ reading. */
+ continue;
+ /* Copy the breakpoint from the shadow contents, and recurse for
+ the things before and after. */
{
- if (b->type == bp_watchpoint || !b->inserted)
- continue;
- else if (b->address + memory_breakpoint_size <= memaddr)
- /* The breakpoint is entirely before the chunk of memory
- we are reading. */
- continue;
- else if (b->address >= memaddr + len)
- /* The breakpoint is entirely after the chunk of memory we
- are reading. */
- continue;
- else
+ /* Offset within shadow_contents. */
+ int bptoffset = 0;
+
+ if (bp_addr < memaddr)
{
- /* Copy the breakpoint from the shadow contents, and recurse
- for the things before and after. */
-
- /* Addresses and length of the part of the breakpoint that
- we need to copy. */
- CORE_ADDR membpt = b->address;
- unsigned int bptlen = memory_breakpoint_size;
- /* Offset within shadow_contents. */
- int bptoffset = 0;
-
- if (membpt < memaddr)
- {
- /* Only copy the second part of the breakpoint. */
- bptlen -= memaddr - membpt;
- bptoffset = memaddr - membpt;
- membpt = memaddr;
- }
+ /* Only copy the second part of the breakpoint. */
+ bp_size -= memaddr - bp_addr;
+ bptoffset = memaddr - bp_addr;
+ bp_addr = memaddr;
+ }
- if (membpt + bptlen > memaddr + len)
- {
- /* Only copy the first part of the breakpoint. */
- bptlen -= (membpt + bptlen) - (memaddr + len);
- }
+ if (bp_addr + bp_size > memaddr + len)
+ {
+ /* Only copy the first part of the breakpoint. */
+ bp_size -= (bp_addr + bp_size) - (memaddr + len);
+ }
- memcpy (myaddr + membpt - memaddr,
- b->shadow_contents + bptoffset, bptlen);
+ memcpy (myaddr + bp_addr - memaddr,
+ b->shadow_contents + bptoffset, bp_size);
- if (membpt > memaddr)
- {
- /* Copy the section of memory before the breakpoint. */
- status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr);
- if (status != 0)
- return status;
- }
+ if (bp_addr > memaddr)
+ {
+ /* Copy the section of memory before the breakpoint. */
+ status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr);
+ if (status != 0)
+ return status;
+ }
- if (membpt + bptlen < memaddr + len)
- {
- /* Copy the section of memory after the breakpoint. */
- status = read_memory_nobpt
- (membpt + bptlen,
- myaddr + membpt + bptlen - memaddr,
- memaddr + len - (membpt + bptlen));
- if (status != 0)
- return status;
- }
- return 0;
+ if (bp_addr + bp_size < memaddr + len)
+ {
+ /* Copy the section of memory after the breakpoint. */
+ status = read_memory_nobpt
+ (bp_addr + bp_size,
+ myaddr + bp_addr + bp_size - memaddr,
+ memaddr + len - (bp_addr + bp_size));
+ if (status != 0)
+ return status;
}
+ return 0;
}
+ }
/* Nothing overlaps. Just call read_memory_noerr. */
return target_read_memory (memaddr, myaddr, len);
}
\f
+
/* insert_breakpoints is used when starting or continuing the program.
remove_breakpoints is used when the program stops.
Both return zero if successful,
or an `errno' value if could not write the inferior. */
int
-insert_breakpoints ()
+insert_breakpoints (void)
{
- register struct breakpoint *b;
+ register struct breakpoint *b, *temp;
+ int return_val = 0; /* return success code. */
int val = 0;
int disabled_breaks = 0;
- ALL_BREAKPOINTS (b)
- if (b->type != bp_watchpoint
+ static char message1[] = "Error inserting catchpoint %d:\n";
+ static char message[sizeof (message1) + 30];
+
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ if (b->enable == permanent)
+ /* Permanent breakpoints cannot be inserted or removed. */
+ continue;
+ else if (b->type != bp_watchpoint
+ && b->type != bp_hardware_watchpoint
+ && b->type != bp_read_watchpoint
+ && b->type != bp_access_watchpoint
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_throw
+ && b->type != bp_catch_catch
&& b->enable != disabled
- && ! b->inserted
- && ! b->duplicate)
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && !b->inserted
+ && !b->duplicate)
{
- val = target_insert_breakpoint(b->address, b->shadow_contents);
+ if (b->type == bp_hardware_breakpoint)
+ val = target_insert_hw_breakpoint (b->address, b->shadow_contents);
+ else
+ {
+ /* Check to see if breakpoint is in an overlay section;
+ if so, we should set the breakpoint at the LMA address.
+ Only if the section is currently mapped should we ALSO
+ set a break at the VMA address. */
+ if (overlay_debugging && b->section &&
+ section_is_overlay (b->section))
+ {
+ CORE_ADDR addr;
+
+ addr = overlay_unmapped_address (b->address, b->section);
+ val = target_insert_breakpoint (addr, b->shadow_contents);
+ /* This would be the time to check val, to see if the
+ breakpoint write to the load address succeeded.
+ However, this might be an ordinary occurrance, eg. if
+ the unmapped overlay is in ROM. */
+ val = 0; /* in case unmapped address failed */
+ if (section_is_mapped (b->section))
+ val = target_insert_breakpoint (b->address,
+ b->shadow_contents);
+ }
+ else /* ordinary (non-overlay) address */
+ val = target_insert_breakpoint (b->address, b->shadow_contents);
+ }
if (val)
{
/* Can't set the breakpoint. */
#if defined (DISABLE_UNSETTABLE_BREAK)
if (DISABLE_UNSETTABLE_BREAK (b->address))
{
+ /* See also: disable_breakpoints_in_shlibs. */
val = 0;
- b->enable = disabled;
+ b->enable = shlib_disabled;
if (!disabled_breaks)
{
target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr,
- "Cannot insert breakpoint %d:\n", b->number);
- printf_filtered ("Disabling shared library breakpoints:\n");
+ warning ("Cannot insert breakpoint %d:", b->number);
+ warning ("Temporarily disabling shared library breakpoints:");
}
disabled_breaks = 1;
- printf_filtered ("%d ", b->number);
+ warning ("breakpoint #%d ", b->number);
}
else
#endif
{
target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
+ warning ("Cannot insert breakpoint %d:", b->number);
#ifdef ONE_PROCESS_WRITETEXT
- fprintf_unfiltered (gdb_stderr,
- "The same program may be running in another process.\n");
+ warning ("The same program may be running in another process.");
#endif
- memory_error (val, b->address); /* which bombs us out */
+ memory_error (val, b->address); /* which bombs us out */
}
}
else
b->inserted = 1;
- }
- if (disabled_breaks)
- printf_filtered ("\n");
- return val;
-}
-int
-remove_breakpoints ()
-{
- register struct breakpoint *b;
- int val;
+ if (val)
+ return_val = val; /* remember failure */
+ }
+ else if (ep_is_exception_catchpoint (b)
+ && b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && !b->inserted
+ && !b->duplicate)
- ALL_BREAKPOINTS (b)
- if (b->type != bp_watchpoint && b->inserted)
{
- val = target_remove_breakpoint(b->address, b->shadow_contents);
+ /* If we get here, we must have a callback mechanism for exception
+ events -- with g++ style embedded label support, we insert
+ ordinary breakpoints and not catchpoints. */
+ /* Format possible error message */
+ sprintf (message, message1, b->number);
+
+ val = target_insert_breakpoint (b->address, b->shadow_contents);
if (val)
- return val;
- b->inserted = 0;
+ {
+ /* Couldn't set breakpoint for some reason */
+ target_terminal_ours_for_output ();
+ warning ("Cannot insert catchpoint %d; disabling it.",
+ b->number);
+ b->enable = disabled;
+ }
+ else
+ {
+ /* Bp set, now make sure callbacks are enabled */
+ int val;
+ args_for_catchpoint_enable args;
+ args.kind = b->type == bp_catch_catch ?
+ EX_EVENT_CATCH : EX_EVENT_THROW;
+ args.enable = 1;
+ val = catch_errors (cover_target_enable_exception_callback,
+ &args,
+ message, RETURN_MASK_ALL);
+ if (val != 0 && val != -1)
+ {
+ b->inserted = 1;
+ }
+ /* Check if something went wrong; val == 0 can be ignored */
+ if (val == -1)
+ {
+ /* something went wrong */
+ target_terminal_ours_for_output ();
+ warning ("Cannot insert catchpoint %d; disabling it.",
+ b->number);
+ b->enable = disabled;
+ }
+ }
+
+ if (val)
+ return_val = val; /* remember failure */
}
- return 0;
-}
+ else if ((b->type == bp_hardware_watchpoint ||
+ b->type == bp_read_watchpoint ||
+ b->type == bp_access_watchpoint)
+ && b->enable == enabled
+ && b->disposition != del_at_next_stop
+ && !b->inserted
+ && !b->duplicate)
+ {
+ struct frame_info *saved_frame;
+ int saved_level, within_current_scope;
+ value_ptr mark = value_mark ();
+ value_ptr v;
+
+ /* Save the current frame and level so we can restore it after
+ evaluating the watchpoint expression on its own frame. */
+ saved_frame = selected_frame;
+ saved_level = selected_frame_level;
+
+ /* Determine if the watchpoint is within scope. */
+ if (b->exp_valid_block == NULL)
+ within_current_scope = 1;
+ else
+ {
+ struct frame_info *fi;
+
+ /* There might be no current frame at this moment if we are
+ resuming from a step over a breakpoint.
+ Set up current frame before trying to find the watchpoint
+ frame. */
+ get_current_frame ();
+ fi = find_frame_addr_in_frame_chain (b->watchpoint_frame);
+ within_current_scope = (fi != NULL);
+ if (within_current_scope)
+ select_frame (fi, -1);
+ }
-/* Clear the "inserted" flag in all breakpoints. */
+ if (within_current_scope)
+ {
+ /* Evaluate the expression and cut the chain of values
+ produced off from the value chain.
+
+ Make sure the value returned isn't lazy; we use
+ laziness to determine what memory GDB actually needed
+ in order to compute the value of the expression. */
+ v = evaluate_expression (b->exp);
+ VALUE_CONTENTS(v);
+ value_release_to_mark (mark);
+
+ b->val_chain = v;
+ b->inserted = 1;
+
+ /* Look at each value on the value chain. */
+ for (; v; v = v->next)
+ {
+ /* If it's a memory location, and GDB actually needed
+ its contents to evaluate the expression, then we
+ must watch it. */
+ if (VALUE_LVAL (v) == lval_memory
+ && ! VALUE_LAZY (v))
+ {
+ 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 the middle of some value chain. */
+ if (v == b->val_chain
+ || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+ && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+ {
+ CORE_ADDR addr;
+ int len, type;
+
+ addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+ len = TYPE_LENGTH (VALUE_TYPE (v));
+ type = hw_write;
+ if (b->type == bp_read_watchpoint)
+ type = hw_read;
+ else if (b->type == bp_access_watchpoint)
+ type = hw_access;
+
+ val = target_insert_watchpoint (addr, len, type);
+ if (val == -1)
+ {
+ /* Don't exit the loop, try to insert
+ every value on the value chain. That's
+ because we will be removing all the
+ watches below, and removing a
+ watchpoint we didn't insert could have
+ adverse effects. */
+ b->inserted = 0;
+ }
+ val = 0;
+ }
+ }
+ }
+ /* Failure to insert a watchpoint on any memory value in the
+ value chain brings us here. */
+ if (!b->inserted)
+ {
+ remove_breakpoint (b, mark_uninserted);
+ warning ("Could not insert hardware watchpoint %d.",
+ b->number);
+ val = -1;
+ }
+ }
+ else
+ {
+ printf_filtered ("Hardware watchpoint %d deleted ", b->number);
+ printf_filtered ("because the program has left the block \n");
+ printf_filtered ("in which its expression is valid.\n");
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
+ }
+
+ /* Restore the frame and level. */
+ if ((saved_frame != selected_frame) ||
+ (saved_level != selected_frame_level))
+ select_frame (saved_frame, saved_level);
+
+ if (val)
+ return_val = val; /* remember failure */
+ }
+ else if ((b->type == bp_catch_fork
+ || b->type == bp_catch_vfork
+ || b->type == bp_catch_exec)
+ && b->enable == enabled
+ && !b->inserted
+ && !b->duplicate)
+ {
+ val = -1;
+ switch (b->type)
+ {
+ case bp_catch_fork:
+ val = target_insert_fork_catchpoint (inferior_pid);
+ break;
+ case bp_catch_vfork:
+ val = target_insert_vfork_catchpoint (inferior_pid);
+ break;
+ case bp_catch_exec:
+ val = target_insert_exec_catchpoint (inferior_pid);
+ break;
+ default:
+ warning ("Internal error, %s line %d.", __FILE__, __LINE__);
+ break;
+ }
+ if (val < 0)
+ {
+ target_terminal_ours_for_output ();
+ warning ("Cannot insert catchpoint %d.", b->number);
+ }
+ else
+ b->inserted = 1;
+
+ if (val)
+ return_val = val; /* remember failure */
+ }
+ }
+
+ return return_val;
+}
+
+
+int
+remove_breakpoints (void)
+{
+ register struct breakpoint *b;
+ int val;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->inserted)
+ {
+ val = remove_breakpoint (b, mark_uninserted);
+ if (val != 0)
+ return val;
+ }
+ }
+ return 0;
+}
+
+int
+remove_hw_watchpoints (void)
+{
+ register struct breakpoint *b;
+ int val;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->inserted
+ && (b->type == bp_hardware_watchpoint
+ || b->type == bp_read_watchpoint
+ || b->type == bp_access_watchpoint))
+ {
+ val = remove_breakpoint (b, mark_uninserted);
+ if (val != 0)
+ return val;
+ }
+ }
+ return 0;
+}
+
+int
+reattach_breakpoints (int pid)
+{
+ register struct breakpoint *b;
+ int val;
+ int saved_inferior_pid = inferior_pid;
+
+ /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */
+ inferior_pid = pid; /* Because remove_breakpoint will use this global. */
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->inserted)
+ {
+ remove_breakpoint (b, mark_inserted);
+ if (b->type == bp_hardware_breakpoint)
+ val = target_insert_hw_breakpoint (b->address, b->shadow_contents);
+ else
+ val = target_insert_breakpoint (b->address, b->shadow_contents);
+ if (val != 0)
+ {
+ inferior_pid = saved_inferior_pid;
+ return val;
+ }
+ }
+ }
+ inferior_pid = saved_inferior_pid;
+ return 0;
+}
+
+void
+update_breakpoints_after_exec (void)
+{
+ struct breakpoint *b;
+ struct breakpoint *temp;
+
+ /* Doing this first prevents the badness of having delete_breakpoint()
+ write a breakpoint's current "shadow contents" to lift the bp. That
+ shadow is NOT valid after an exec()! */
+ mark_breakpoints_out ();
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ /* Solib breakpoints must be explicitly reset after an exec(). */
+ if (b->type == bp_shlib_event)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Thread event breakpoints must be set anew after an exec(). */
+ if (b->type == bp_thread_event)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Step-resume breakpoints are meaningless after an exec(). */
+ if (b->type == bp_step_resume)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Ditto the sigtramp handler breakpoints. */
+ if (b->type == bp_through_sigtramp)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Ditto the exception-handling catchpoints. */
+ if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw))
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* Don't delete an exec catchpoint, because else the inferior
+ won't stop when it ought!
+
+ Similarly, we probably ought to keep vfork catchpoints, 'cause
+ on this target, we may not be able to stop when the vfork is
+ seen, but only when the subsequent exec is seen. (And because
+ deleting fork catchpoints here but not vfork catchpoints will
+ seem mysterious to users, keep those too.)
+
+ ??rehrauer: Let's hope that merely clearing out this catchpoint's
+ target address field, if any, is sufficient to have it be reset
+ automagically. Certainly on HP-UX that's true. */
+ if ((b->type == bp_catch_exec) ||
+ (b->type == bp_catch_vfork) ||
+ (b->type == bp_catch_fork))
+ {
+ b->address = (CORE_ADDR) NULL;
+ continue;
+ }
+
+ /* bp_finish is a special case. The only way we ought to be able
+ to see one of these when an exec() has happened, is if the user
+ caught a vfork, and then said "finish". Ordinarily a finish just
+ carries them to the call-site of the current callee, by setting
+ a temporary bp there and resuming. But in this case, the finish
+ will carry them entirely through the vfork & exec.
+
+ We don't want to allow a bp_finish to remain inserted now. But
+ we can't safely delete it, 'cause finish_command has a handle to
+ the bp on a bpstat, and will later want to delete it. There's a
+ chance (and I've seen it happen) that if we delete the bp_finish
+ here, that its storage will get reused by the time finish_command
+ gets 'round to deleting the "use to be a bp_finish" breakpoint.
+ We really must allow finish_command to delete a bp_finish.
+
+ In the absense of a general solution for the "how do we know
+ it's safe to delete something others may have handles to?"
+ problem, what we'll do here is just uninsert the bp_finish, and
+ let finish_command delete it.
+
+ (We know the bp_finish is "doomed" in the sense that it's
+ momentary, and will be deleted as soon as finish_command sees
+ the inferior stopped. So it doesn't matter that the bp's
+ address is probably bogus in the new a.out, unlike e.g., the
+ solib breakpoints.) */
+
+ if (b->type == bp_finish)
+ {
+ continue;
+ }
+
+ /* Without a symbolic address, we have little hope of the
+ pre-exec() address meaning the same thing in the post-exec()
+ a.out. */
+ if (b->addr_string == NULL)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
+ /* If this breakpoint has survived the above battery of checks, then
+ it must have a symbolic address. Be sure that it gets reevaluated
+ to a target address, rather than reusing the old evaluation. */
+ b->address = (CORE_ADDR) NULL;
+ }
+}
+
+int
+detach_breakpoints (int pid)
+{
+ register struct breakpoint *b;
+ int val;
+ int saved_inferior_pid = inferior_pid;
+
+ if (pid == inferior_pid)
+ error ("Cannot detach breakpoints of inferior_pid");
+
+ /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */
+ inferior_pid = pid; /* Because remove_breakpoint will use this global. */
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->inserted)
+ {
+ val = remove_breakpoint (b, mark_inserted);
+ if (val != 0)
+ {
+ inferior_pid = saved_inferior_pid;
+ return val;
+ }
+ }
+ }
+ inferior_pid = saved_inferior_pid;
+ return 0;
+}
+
+static int
+remove_breakpoint (struct breakpoint *b, insertion_state_t is)
+{
+ int val;
+
+ if (b->enable == permanent)
+ /* Permanent breakpoints cannot be inserted or removed. */
+ return 0;
+
+ if (b->type == bp_none)
+ warning ("attempted to remove apparently deleted breakpoint #%d?",
+ b->number);
+
+ if (b->type != bp_watchpoint
+ && b->type != bp_hardware_watchpoint
+ && b->type != bp_read_watchpoint
+ && b->type != bp_access_watchpoint
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_catch
+ && b->type != bp_catch_throw)
+ {
+ if (b->type == bp_hardware_breakpoint)
+ val = target_remove_hw_breakpoint (b->address, b->shadow_contents);
+ else
+ {
+ /* Check to see if breakpoint is in an overlay section;
+ if so, we should remove the breakpoint at the LMA address.
+ If that is not equal to the raw address, then we should
+ presumable remove the breakpoint there as well. */
+ if (overlay_debugging && b->section &&
+ section_is_overlay (b->section))
+ {
+ CORE_ADDR addr;
+
+ addr = overlay_unmapped_address (b->address, b->section);
+ val = target_remove_breakpoint (addr, b->shadow_contents);
+ /* This would be the time to check val, to see if the
+ shadow breakpoint write to the load address succeeded.
+ However, this might be an ordinary occurrance, eg. if
+ the unmapped overlay is in ROM. */
+ val = 0; /* in case unmapped address failed */
+ if (section_is_mapped (b->section))
+ val = target_remove_breakpoint (b->address,
+ b->shadow_contents);
+ }
+ else /* ordinary (non-overlay) address */
+ val = target_remove_breakpoint (b->address, b->shadow_contents);
+ }
+ if (val)
+ return val;
+ b->inserted = (is == mark_inserted);
+ }
+ else if ((b->type == bp_hardware_watchpoint ||
+ b->type == bp_read_watchpoint ||
+ b->type == bp_access_watchpoint)
+ && b->enable == enabled
+ && !b->duplicate)
+ {
+ value_ptr v, n;
+
+ b->inserted = (is == mark_inserted);
+ /* Walk down the saved value chain. */
+ for (v = b->val_chain; v; v = v->next)
+ {
+ /* For each memory reference remove the watchpoint
+ at that address. */
+ if (VALUE_LVAL (v) == lval_memory
+ && ! VALUE_LAZY (v))
+ {
+ struct type *vtype = check_typedef (VALUE_TYPE (v));
+
+ if (v == b->val_chain
+ || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+ && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+ {
+ CORE_ADDR addr;
+ int len, type;
+
+ addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+ len = TYPE_LENGTH (VALUE_TYPE (v));
+ type = hw_write;
+ if (b->type == bp_read_watchpoint)
+ type = hw_read;
+ else if (b->type == bp_access_watchpoint)
+ type = hw_access;
+
+ val = target_remove_watchpoint (addr, len, type);
+ if (val == -1)
+ b->inserted = 1;
+ val = 0;
+ }
+ }
+ }
+ /* Failure to remove any of the hardware watchpoints comes here. */
+ if ((is == mark_uninserted) && (b->inserted))
+ warning ("Could not remove hardware watchpoint %d.",
+ b->number);
+
+ /* Free the saved value chain. We will construct a new one
+ the next time the watchpoint is inserted. */
+ for (v = b->val_chain; v; v = n)
+ {
+ n = v->next;
+ value_free (v);
+ }
+ b->val_chain = NULL;
+ }
+ else if ((b->type == bp_catch_fork ||
+ b->type == bp_catch_vfork ||
+ b->type == bp_catch_exec)
+ && b->enable == enabled
+ && !b->duplicate)
+ {
+ val = -1;
+ switch (b->type)
+ {
+ case bp_catch_fork:
+ val = target_remove_fork_catchpoint (inferior_pid);
+ break;
+ case bp_catch_vfork:
+ val = target_remove_vfork_catchpoint (inferior_pid);
+ break;
+ case bp_catch_exec:
+ val = target_remove_exec_catchpoint (inferior_pid);
+ break;
+ default:
+ warning ("Internal error, %s line %d.", __FILE__, __LINE__);
+ break;
+ }
+ if (val)
+ return val;
+ b->inserted = (is == mark_inserted);
+ }
+ else if ((b->type == bp_catch_catch ||
+ b->type == bp_catch_throw)
+ && b->enable == enabled
+ && !b->duplicate)
+ {
+
+ val = target_remove_breakpoint (b->address, b->shadow_contents);
+ if (val)
+ return val;
+ b->inserted = (is == mark_inserted);
+ }
+ else if (ep_is_exception_catchpoint (b)
+ && b->inserted /* sometimes previous insert doesn't happen */
+ && b->enable == enabled
+ && !b->duplicate)
+ {
+
+ val = target_remove_breakpoint (b->address, b->shadow_contents);
+ if (val)
+ return val;
+
+ b->inserted = (is == mark_inserted);
+ }
+
+ return 0;
+}
+
+/* Clear the "inserted" flag in all breakpoints. */
void
-mark_breakpoints_out ()
+mark_breakpoints_out (void)
{
register struct breakpoint *b;
b->inserted = 0;
}
-/* Clear the "inserted" flag in all breakpoints and delete any breakpoints
- which should go away between runs of the program. */
+/* Clear the "inserted" flag in all breakpoints and delete any
+ breakpoints which should go away between runs of the program.
+
+ Plus other such housekeeping that has to be done for breakpoints
+ between runs.
+
+ Note: this function gets called at the end of a run (by
+ generic_mourn_inferior) and when a run begins (by
+ init_wait_for_inferior). */
+
+
void
-breakpoint_init_inferior ()
+breakpoint_init_inferior (enum inf_context context)
{
register struct breakpoint *b, *temp;
+ static int warning_needed = 0;
ALL_BREAKPOINTS_SAFE (b, temp)
- {
- b->inserted = 0;
+ {
+ b->inserted = 0;
+
+ switch (b->type)
+ {
+ case bp_call_dummy:
+ case bp_watchpoint_scope:
+
+ /* If the call dummy breakpoint is at the entry point it will
+ cause problems when the inferior is rerun, so we better
+ get rid of it.
- /* If the call dummy breakpoint is at the entry point it will
- cause problems when the inferior is rerun, so we better
- get rid of it. */
- if (b->type == bp_call_dummy)
+ Also get rid of scope breakpoints. */
delete_breakpoint (b);
+ break;
+
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+
+ /* Likewise for watchpoints on local expressions. */
+ if (b->exp_valid_block != NULL)
+ delete_breakpoint (b);
+ break;
+ default:
+ /* Likewise for exception catchpoints in dynamic-linked
+ executables where required */
+ if (ep_is_exception_catchpoint (b) &&
+ exception_catchpoints_are_fragile)
+ {
+ warning_needed = 1;
+ delete_breakpoint (b);
+ }
+ break;
+ }
+ }
+
+ if (exception_catchpoints_are_fragile)
+ exception_support_initialized = 0;
+
+ /* Don't issue the warning unless it's really needed... */
+ if (warning_needed && (context != inf_exited))
+ {
+ warning ("Exception catchpoints from last run were deleted.");
+ warning ("You must reinsert them explicitly.");
+ warning_needed = 0;
}
}
-/* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC.
- When continuing from a location with a breakpoint,
- we actually single step once before calling insert_breakpoints. */
+/* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
+ exists at PC. It returns ordinary_breakpoint_here if it's an
+ ordinary breakpoint, or permanent_breakpoint_here if it's a
+ 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
+ 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 (CORE_ADDR pc)
+{
+ register struct breakpoint *b;
+ int any_breakpoint_here = 0;
+
+ ALL_BREAKPOINTS (b)
+ if ((b->enable == enabled
+ || b->enable == permanent)
+ && b->address == pc) /* bp is enabled and matches pc */
+ {
+ if (overlay_debugging &&
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else if (b->enable == permanent)
+ return permanent_breakpoint_here;
+ else
+ any_breakpoint_here = 1;
+ }
+
+ return any_breakpoint_here ? ordinary_breakpoint_here : 0;
+}
+
+
+/* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(),
+ but it only returns true if there is actually a breakpoint inserted
+ at PC. */
int
-breakpoint_here_p (pc)
- CORE_ADDR pc;
+breakpoint_inserted_here_p (CORE_ADDR pc)
{
register struct breakpoint *b;
ALL_BREAKPOINTS (b)
- if (b->enable != disabled && b->address == pc)
- return 1;
+ if (b->inserted
+ && b->address == pc) /* bp is inserted and matches pc */
+ {
+ if (overlay_debugging &&
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
return 0;
}
-/* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY
- because figuring out the saved SP would take too much time, at least using
- get_saved_register on the 68k. This means that for this function to
- work right a port must use the bp_call_dummy breakpoint. */
+/* Return nonzero if FRAME is a dummy frame. We can't use
+ PC_IN_CALL_DUMMY because figuring out the saved SP would take too
+ much time, at least using get_saved_register on the 68k. This
+ means that for this function to work right a port must use the
+ bp_call_dummy breakpoint. */
int
-frame_in_dummy (frame)
- FRAME frame;
+frame_in_dummy (struct frame_info *frame)
{
struct breakpoint *b;
-#ifdef CALL_DUMMY
- ALL_BREAKPOINTS (b)
- {
- static unsigned LONGEST dummy[] = CALL_DUMMY;
+ if (!CALL_DUMMY_P)
+ return 0;
- if (b->type == bp_call_dummy
- && b->frame == frame->frame
+ if (USE_GENERIC_DUMMY_FRAMES)
+ return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame);
- /* We need to check the PC as well as the frame on the sparc,
- for signals.exp in the testsuite. */
- && (frame->pc
- >= (b->address
- - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE))
- && frame->pc <= b->address)
- return 1;
- }
-#endif /* CALL_DUMMY */
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->type == bp_call_dummy
+ && b->frame == frame->frame
+ /* We need to check the PC as well as the frame on the sparc,
+ for signals.exp in the testsuite. */
+ && (frame->pc
+ >= (b->address
+ - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE))
+ && frame->pc <= b->address)
+ return 1;
+ }
return 0;
}
-/* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC
- is valid for process/thread PID. */
+/* breakpoint_thread_match (PC, PID) returns true if the breakpoint at
+ PC is valid for process/thread PID. */
int
-breakpoint_thread_match (pc, pid)
- CORE_ADDR pc;
- int pid;
+breakpoint_thread_match (CORE_ADDR pc, int pid)
{
struct breakpoint *b;
int thread;
ALL_BREAKPOINTS (b)
if (b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
&& b->address == pc
&& (b->thread == -1 || b->thread == thread))
- return 1;
+ {
+ if (overlay_debugging &&
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
return 0;
}
-
\f
+
/* bpstat stuff. External routines' interfaces are documented
in breakpoint.h. */
+int
+ep_is_catchpoint (struct breakpoint *ep)
+{
+ return
+ (ep->type == bp_catch_load)
+ || (ep->type == bp_catch_unload)
+ || (ep->type == bp_catch_fork)
+ || (ep->type == bp_catch_vfork)
+ || (ep->type == bp_catch_exec)
+ || (ep->type == bp_catch_catch)
+ || (ep->type == bp_catch_throw)
+
+
+ /* ??rehrauer: Add more kinds here, as are implemented... */
+ ;
+}
+
+int
+ep_is_shlib_catchpoint (struct breakpoint *ep)
+{
+ return
+ (ep->type == bp_catch_load)
+ || (ep->type == bp_catch_unload)
+ ;
+}
+
+int
+ep_is_exception_catchpoint (struct breakpoint *ep)
+{
+ return
+ (ep->type == bp_catch_catch)
+ || (ep->type == bp_catch_throw)
+ ;
+}
+
/* Clear a bpstat so that it says we are not at any breakpoint.
Also free any storage that is part of a bpstat. */
void
-bpstat_clear (bsp)
- bpstat *bsp;
+bpstat_clear (bpstat *bsp)
{
bpstat p;
bpstat q;
q = p->next;
if (p->old_val != NULL)
value_free (p->old_val);
- free ((PTR)p);
+ free ((PTR) p);
p = q;
}
*bsp = NULL;
is part of the bpstat is copied as well. */
bpstat
-bpstat_copy (bs)
- bpstat bs;
+bpstat_copy (bpstat bs)
{
bpstat p = NULL;
bpstat tmp;
/* Find the bpstat associated with this breakpoint */
bpstat
-bpstat_find_breakpoint(bsp, breakpoint)
- bpstat bsp;
- struct breakpoint *breakpoint;
+bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint)
{
- if (bsp == NULL) return NULL;
+ if (bsp == NULL)
+ return NULL;
- for (;bsp != NULL; bsp = bsp->next) {
- if (bsp->breakpoint_at == breakpoint) return bsp;
- }
+ for (; bsp != NULL; bsp = bsp->next)
+ {
+ if (bsp->breakpoint_at == breakpoint)
+ return bsp;
+ }
return NULL;
}
-/* Return the breakpoint number of the first breakpoint we are stopped
- at. *BSP upon return is a bpstat which points to the remaining
- breakpoints stopped at (but which is not guaranteed to be good for
+/* Find a step_resume breakpoint associated with this bpstat.
+ (If there are multiple step_resume bp's on the list, this function
+ will arbitrarily pick one.)
+
+ It is an error to use this function if BPSTAT doesn't contain a
+ step_resume breakpoint.
+
+ See wait_for_inferior's use of this function. */
+struct breakpoint *
+bpstat_find_step_resume_breakpoint (bpstat bsp)
+{
+ if (bsp == NULL)
+ error ("Internal error (bpstat_find_step_resume_breakpoint)");
+
+ for (; bsp != NULL; bsp = bsp->next)
+ {
+ if ((bsp->breakpoint_at != NULL) &&
+ (bsp->breakpoint_at->type == bp_step_resume))
+ return bsp->breakpoint_at;
+ }
+
+ error ("Internal error (no step_resume breakpoint found)");
+}
+
+
+/* Return the breakpoint number of the first breakpoint we are stopped
+ at. *BSP upon return is a bpstat which points to the remaining
+ breakpoints stopped at (but which is not guaranteed to be good for
anything but further calls to bpstat_num).
Return 0 if passed a bpstat which does not indicate any breakpoints. */
int
-bpstat_num (bsp)
- bpstat *bsp;
+bpstat_num (bpstat *bsp)
{
struct breakpoint *b;
if (b == NULL)
return -1; /* breakpoint that's been deleted since */
else
- return b->number; /* We have its number */
+ return b->number; /* We have its number */
}
}
/* Modify BS so that the actions will not be performed. */
void
-bpstat_clear_actions (bs)
- bpstat bs;
+bpstat_clear_actions (bpstat bs)
{
for (; bs != NULL; bs = bs->next)
{
/* Stub for cleaning up our state if we error-out of a breakpoint command */
/* ARGSUSED */
static void
-cleanup_executing_breakpoints (ignore)
- int ignore;
+cleanup_executing_breakpoints (PTR ignore)
{
executing_breakpoint_commands = 0;
}
the global "breakpoint_proceeded" after each command. */
void
-bpstat_do_actions (bsp)
- bpstat *bsp;
+bpstat_do_actions (bpstat *bsp)
{
bpstat bs;
struct cleanup *old_chain;
+ struct command_line *cmd;
+
+ /* Avoid endless recursion if a `source' command is contained
+ in bs->commands. */
+ if (executing_breakpoint_commands)
+ return;
executing_breakpoint_commands = 1;
old_chain = make_cleanup (cleanup_executing_breakpoints, 0);
top:
+ /* Note that (as of this writing), our callers all appear to
+ be passing us the address of global stop_bpstat. And, if
+ our calls to execute_control_command cause the inferior to
+ proceed, that global (and hence, *bsp) will change.
+
+ We must be careful to not touch *bsp unless the inferior
+ has not proceeded. */
+
+ /* This pointer will iterate over the list of bpstat's. */
bs = *bsp;
breakpoint_proceeded = 0;
for (; bs != NULL; bs = bs->next)
{
- while (bs->commands)
+ cmd = bs->commands;
+ while (cmd != NULL)
{
- char *line = bs->commands->line;
- bs->commands = bs->commands->next;
- execute_command (line, 0);
- /* If the inferior is proceeded by the command, bomb out now.
- The bpstat chain has been blown away by wait_for_inferior.
- But since execution has stopped again, there is a new bpstat
- to look at, so start over. */
+ execute_control_command (cmd);
+
if (breakpoint_proceeded)
- goto top;
+ break;
+ else
+ cmd = cmd->next;
}
+ if (breakpoint_proceeded)
+ /* The inferior is proceeded by the command; bomb out now.
+ The bpstat chain has been blown away by wait_for_inferior.
+ But since execution has stopped again, there is a new bpstat
+ to look at, so start over. */
+ goto top;
+ else
+ bs->commands = NULL;
}
executing_breakpoint_commands = 0;
discard_cleanups (old_chain);
}
-/* This is the normal print_it function for a bpstat. In the future,
+/* 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 functions. */
-
-static int
-print_it_normal (bs)
- bpstat bs;
+ 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)
{
+#ifdef UI_OUT
+ struct cleanup *old_chain;
+ struct ui_stream *stb;
+ stb = ui_out_stream_new (uiout);
+ old_chain = make_cleanup_ui_out_stream_delete (stb);
+#endif /* UI_OUT */
/* bs->breakpoint_at can be NULL if it was a momentary breakpoint
which has since been deleted. */
- if (bs->breakpoint_at == NULL
- || (bs->breakpoint_at->type != bp_breakpoint
- && bs->breakpoint_at->type != bp_watchpoint))
- return 0;
+ if (bs->breakpoint_at == NULL)
+ return PRINT_UNKNOWN;
- if (bs->breakpoint_at->type == bp_breakpoint)
+ switch (bs->breakpoint_at->type)
{
+ case bp_breakpoint:
+ case bp_hardware_breakpoint:
+#ifdef UI_OUT
+ annotate_breakpoint (bs->breakpoint_at->number);
+ ui_out_text (uiout, "\nBreakpoint ");
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ ui_out_field_string (uiout, "reason", "breakpoint-hit");
+ ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number);
+ ui_out_text (uiout, ", ");
+ return PRINT_SRC_AND_LOC;
+#else
/* I think the user probably only wants to see one breakpoint
- number, not all of them. */
+ number, not all of them. */
+ annotate_breakpoint (bs->breakpoint_at->number);
printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number);
- return 0;
- }
-
- if (bs->old_val != NULL)
- {
- printf_filtered ("\nWatchpoint %d, ", bs->breakpoint_at->number);
- print_expression (bs->breakpoint_at->exp, gdb_stdout);
- printf_filtered ("\nOld value = ");
- value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default);
- printf_filtered ("\nNew value = ");
+ return PRINT_SRC_AND_LOC;
+#endif
+ 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");
+ return 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");
+ return PRINT_NOTHING;
+ break;
+
+ case bp_catch_load:
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+ printf_filtered ("loaded");
+ printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname);
+ return PRINT_SRC_AND_LOC;
+ break;
+
+ case bp_catch_unload:
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+ printf_filtered ("unloaded");
+ printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname);
+ return PRINT_SRC_AND_LOC;
+ break;
+
+ case bp_catch_fork:
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+ printf_filtered ("forked");
+ printf_filtered (" process %d), ",
+ bs->breakpoint_at->forked_inferior_pid);
+ return PRINT_SRC_AND_LOC;
+ break;
+
+ case bp_catch_vfork:
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
+ printf_filtered ("vforked");
+ printf_filtered (" process %d), ",
+ bs->breakpoint_at->forked_inferior_pid);
+ return PRINT_SRC_AND_LOC;
+ break;
+
+ case bp_catch_exec:
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (exec'd %s), ",
+ bs->breakpoint_at->number,
+ bs->breakpoint_at->exec_pathname);
+ return PRINT_SRC_AND_LOC;
+ break;
+
+ case bp_catch_catch:
+ if (current_exception_event &&
+ (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH))
+ {
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (exception caught), ",
+ bs->breakpoint_at->number);
+ printf_filtered ("throw location ");
+ if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE)
+ printf_filtered ("%s:%d",
+ CURRENT_EXCEPTION_THROW_FILE,
+ CURRENT_EXCEPTION_THROW_LINE);
+ else
+ printf_filtered ("unknown");
+
+ printf_filtered (", catch location ");
+ if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE)
+ printf_filtered ("%s:%d",
+ CURRENT_EXCEPTION_CATCH_FILE,
+ CURRENT_EXCEPTION_CATCH_LINE);
+ else
+ printf_filtered ("unknown");
+
+ printf_filtered ("\n");
+ /* don't bother to print location frame info */
+ return PRINT_SRC_ONLY;
+ }
+ else
+ {
+ /* really throw, some other bpstat will handle it */
+ return PRINT_UNKNOWN;
+ }
+ break;
+
+ case bp_catch_throw:
+ if (current_exception_event &&
+ (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW))
+ {
+ annotate_catchpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nCatchpoint %d (exception thrown), ",
+ bs->breakpoint_at->number);
+ printf_filtered ("throw location ");
+ if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE)
+ printf_filtered ("%s:%d",
+ CURRENT_EXCEPTION_THROW_FILE,
+ CURRENT_EXCEPTION_THROW_LINE);
+ else
+ printf_filtered ("unknown");
+
+ printf_filtered (", catch location ");
+ if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE)
+ printf_filtered ("%s:%d",
+ CURRENT_EXCEPTION_CATCH_FILE,
+ CURRENT_EXCEPTION_CATCH_LINE);
+ else
+ printf_filtered ("unknown");
+
+ printf_filtered ("\n");
+ /* don't bother to print location frame info */
+ return PRINT_SRC_ONLY;
+ }
+ else
+ {
+ /* really catch, some other bpstat will handle it */
+ return PRINT_UNKNOWN;
+ }
+ break;
+
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ if (bs->old_val != NULL)
+ {
+ annotate_watchpoint (bs->breakpoint_at->number);
+#ifdef UI_OUT
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ ui_out_field_string (uiout, "reason", "watchpoint-trigger");
+ mention (bs->breakpoint_at);
+ ui_out_list_begin (uiout, "value");
+ ui_out_text (uiout, "\nOld value = ");
+ value_print (bs->old_val, stb->stream, 0, Val_pretty_default);
+ ui_out_field_stream (uiout, "old", stb);
+ ui_out_text (uiout, "\nNew value = ");
+ value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default);
+ ui_out_field_stream (uiout, "new", stb);
+ ui_out_list_end (uiout);
+ ui_out_text (uiout, "\n");
+#else
+ mention (bs->breakpoint_at);
+ printf_filtered ("\nOld value = ");
+ value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default);
+ printf_filtered ("\nNew value = ");
+ value_print (bs->breakpoint_at->val, gdb_stdout, 0,
+ Val_pretty_default);
+ printf_filtered ("\n");
+#endif
+ value_free (bs->old_val);
+ bs->old_val = NULL;
+ }
+ /* More than one watchpoint may have been triggered. */
+ return PRINT_UNKNOWN;
+ break;
+
+ case bp_read_watchpoint:
+#ifdef UI_OUT
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ ui_out_field_string (uiout, "reason", "read-watchpoint-trigger");
+ mention (bs->breakpoint_at);
+ ui_out_list_begin (uiout, "value");
+ ui_out_text (uiout, "\nValue = ");
+ value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default);
+ ui_out_field_stream (uiout, "value", stb);
+ ui_out_list_end (uiout);
+ ui_out_text (uiout, "\n");
+#else
+ mention (bs->breakpoint_at);
+ printf_filtered ("\nValue = ");
value_print (bs->breakpoint_at->val, gdb_stdout, 0,
Val_pretty_default);
printf_filtered ("\n");
- value_free (bs->old_val);
- bs->old_val = NULL;
- /* More than one watchpoint may have been triggered. */
- return -1;
+#endif
+ return PRINT_UNKNOWN;
+ break;
+
+ case bp_access_watchpoint:
+#ifdef UI_OUT
+ if (bs->old_val != NULL)
+ {
+ annotate_watchpoint (bs->breakpoint_at->number);
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ ui_out_field_string (uiout, "reason", "access-watchpoint-trigger");
+ mention (bs->breakpoint_at);
+ ui_out_list_begin (uiout, "value");
+ ui_out_text (uiout, "\nOld value = ");
+ value_print (bs->old_val, stb->stream, 0, Val_pretty_default);
+ ui_out_field_stream (uiout, "old", stb);
+ value_free (bs->old_val);
+ bs->old_val = NULL;
+ ui_out_text (uiout, "\nNew value = ");
+ }
+ else
+ {
+ mention (bs->breakpoint_at);
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ ui_out_list_begin (uiout, "value");
+ ui_out_field_string (uiout, "reason", "access-watchpoint-trigger");
+ ui_out_text (uiout, "\nValue = ");
+ }
+ value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default);
+ ui_out_field_stream (uiout, "new", stb);
+ ui_out_list_end (uiout);
+ ui_out_text (uiout, "\n");
+#else
+ if (bs->old_val != NULL)
+ {
+ annotate_watchpoint (bs->breakpoint_at->number);
+ mention (bs->breakpoint_at);
+ printf_filtered ("\nOld value = ");
+ value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default);
+ value_free (bs->old_val);
+ bs->old_val = NULL;
+ printf_filtered ("\nNew value = ");
+ }
+ else
+ {
+ mention (bs->breakpoint_at);
+ printf_filtered ("\nValue = ");
+ }
+ value_print (bs->breakpoint_at->val, gdb_stdout, 0,
+ Val_pretty_default);
+ printf_filtered ("\n");
+#endif
+ return PRINT_UNKNOWN;
+ break;
+
+ /* Fall through, we don't deal with these types of breakpoints
+ here. */
+
+ case bp_finish:
+#ifdef UI_OUT
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ ui_out_field_string (uiout, "reason", "function-finished");
+#endif
+ return PRINT_UNKNOWN;
+ break;
+
+ case bp_until:
+#ifdef UI_OUT
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ ui_out_field_string (uiout, "reason", "location-reached");
+#endif
+ return PRINT_UNKNOWN;
+ break;
+
+ case bp_none:
+ case bp_longjmp:
+ case bp_longjmp_resume:
+ case bp_step_resume:
+ case bp_through_sigtramp:
+ case bp_watchpoint_scope:
+ case bp_call_dummy:
+ default:
+ return PRINT_UNKNOWN;
}
- /* We can't deal with it. Maybe another member of the bpstat chain can. */
- return -1;
}
-/* Print a message indicating what happened. Returns nonzero to
- say that only the source line should be printed after this (zero
- return means print the frame as well as the source line). */
-/* Currently we always return zero. */
-int
-bpstat_print (bs)
- bpstat bs;
+/* Generic routine for printing messages indicating why we
+ 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(). */
+
+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. */
+ return PRINT_UNKNOWN;
+ break;
+
+ case print_it_done:
+ /* We still want to print the frame, but we already printed the
+ relevant messages. */
+ return PRINT_SRC_AND_LOC;
+ break;
+
+ case print_it_normal:
+ /* Normal case, we handle everything in print_it_typical. */
+ return print_it_typical (bs);
+ break;
+ default:
+ internal_error ("print_bp_stop_message: unrecognized enum value");
+ break;
+ }
+}
+
+/* Print a message indicating what happened. This is called from
+ normal_stop(). The input to this routine is the head of the bpstat
+ list - a list of the eventpoints that caused this stop. This
+ routine calls the generic print routine for printing a message
+ about reasons for stopping. This will print (for example) the
+ "Breakpoint n," part of the output. The return value of this
+ routine is one of:
+
+ 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
+ "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.
+ PRINT_NOTHING: We have done some printing and we don't need any
+ further info to be printed.*/
+
+enum print_stop_action
+bpstat_print (bpstat bs)
{
int val;
-
- if (bs == NULL)
- return 0;
- val = (*bs->print_it) (bs);
- if (val >= 0)
- return val;
-
/* Maybe another breakpoint in the chain caused us to stop.
- (Currently all watchpoints go on the bpstat whether hit or
- not. That probably could (should) be changed, provided care is taken
+ (Currently all watchpoints go on the bpstat whether hit or not.
+ That probably could (should) be changed, provided care is taken
with respect to bpstat_explains_signal). */
- if (bs->next)
- return bpstat_print (bs->next);
+ for (; bs; bs = bs->next)
+ {
+ val = print_bp_stop_message (bs);
+ if (val == PRINT_SRC_ONLY
+ || val == PRINT_SRC_AND_LOC
+ || val == PRINT_NOTHING)
+ return val;
+ }
- /* We reached the end of the chain without printing anything. */
- return 0;
+ /* We reached the end of the chain, or we got a null BS to start
+ with and nothing was printed. */
+ return PRINT_UNKNOWN;
}
/* Evaluate the expression EXP and return 1 if value is zero.
make it pass through catch_errors. */
static int
-breakpoint_cond_eval (exp)
- char *exp;
+breakpoint_cond_eval (PTR exp)
{
- return !value_true (evaluate_expression ((struct expression *)exp));
+ value_ptr mark = value_mark ();
+ int i = !value_true (evaluate_expression ((struct expression *) exp));
+ value_free_to_mark (mark);
+ return i;
}
/* Allocate a new bpstat and chain it to the current one. */
static bpstat
bpstat_alloc (b, cbs)
register struct breakpoint *b;
- bpstat cbs; /* Current "bs" value */
+ bpstat cbs; /* Current "bs" value */
{
bpstat bs;
return bs;
}
\f
-/* Return the frame which we can use to evaluate the expression
- whose valid block is valid_block, or NULL if not in scope.
-
- This whole concept is probably not the way to do things (it is incredibly
- slow being the main reason, not to mention fragile (e.g. the sparc
- frame pointer being fetched as 0 bug causes it to stop)). Instead,
- introduce a version of "struct frame" which survives over calls to the
- inferior, but which is better than FRAME_ADDR in the sense that it lets
- us evaluate expressions relative to that frame (on some machines, it
- can just be a FRAME_ADDR). Save one of those instead of (or in addition
- to) the exp_valid_block, and then use it to evaluate the watchpoint
- expression, with no need to do all this backtracing every time.
-
- Or better yet, what if it just copied the struct frame and its next
- frame? Off the top of my head, I would think that would work
- because things like (a29k) rsize and msize, or (sparc) bottom just
- depend on the frame, and aren't going to be different just because
- the inferior has done something. Trying to recalculate them
- strikes me as a lot of work, possibly even impossible. Saving the
- next frame is needed at least on a29k, where get_saved_register
- uses fi->next->saved_msp. For figuring out whether that frame is
- still on the stack, I guess this needs to be machine-specific (e.g.
- a29k) but I think
-
- read_fp () INNER_THAN watchpoint_frame->frame
-
- would generally work.
-
- Of course the scope of the expression could be less than a whole
- function; perhaps if the innermost frame is the one which the
- watchpoint is relative to (another machine-specific thing, usually
-
- FRAMELESS_FUNCTION_INVOCATION (get_current_frame(), fromleaf)
- read_fp () == wp_frame->frame
- && !fromleaf
-
- ), *then* it could do a
-
- contained_in (get_current_block (), wp->exp_valid_block).
-
- */
-
-FRAME
-within_scope (valid_block)
- struct block *valid_block;
-{
- FRAME fr = get_current_frame ();
- struct frame_info *fi = get_frame_info (fr);
- CORE_ADDR func_start;
-
- /* If caller_pc_valid is true, we are stepping through
- a function prologue, which is bounded by callee_func_start
- (inclusive) and callee_prologue_end (exclusive).
- caller_pc is the pc of the caller.
-
- Yes, this is hairy. */
- static int caller_pc_valid = 0;
- static CORE_ADDR caller_pc;
- static CORE_ADDR callee_func_start;
- static CORE_ADDR callee_prologue_end;
-
- find_pc_partial_function (fi->pc, (PTR)NULL, &func_start, (CORE_ADDR *)NULL);
- func_start += FUNCTION_START_OFFSET;
- if (fi->pc == func_start)
- {
- /* We just called a function. The only other case I
- can think of where the pc would equal the pc of the
- start of a function is a frameless function (i.e.
- no prologue) where we branch back to the start
- of the function. In that case, SKIP_PROLOGUE won't
- find one, and we'll clear caller_pc_valid a few lines
- down. */
- caller_pc_valid = 1;
- caller_pc = SAVED_PC_AFTER_CALL (fr);
- callee_func_start = func_start;
- SKIP_PROLOGUE (func_start);
- callee_prologue_end = func_start;
- }
- if (caller_pc_valid)
- {
- if (fi->pc < callee_func_start
- || fi->pc >= callee_prologue_end)
- caller_pc_valid = 0;
- }
-
- if (contained_in (block_for_pc (caller_pc_valid
- ? caller_pc
- : fi->pc),
- valid_block))
- {
- return fr;
- }
- fr = get_prev_frame (fr);
-
- /* If any active frame is in the exp_valid_block, then it's
- OK. Note that this might not be the same invocation of
- the exp_valid_block that we were watching a little while
- ago, or the same one as when the watchpoint was set (e.g.
- we are watching a local variable in a recursive function.
- When we return from a recursive invocation, then we are
- suddenly watching a different instance of the variable).
-
- At least for now I am going to consider this a feature. */
- for (; fr != NULL; fr = get_prev_frame (fr))
- {
- fi = get_frame_info (fr);
- if (contained_in (block_for_pc (fi->pc),
- valid_block))
- {
- return fr;
- }
- }
- return NULL;
-}
-
/* Possible return values for watchpoint_check (this can't be an enum
because of check_errors). */
-/* The watchpoint has been disabled. */
-#define WP_DISABLED 1
+/* The watchpoint has been deleted. */
+#define WP_DELETED 1
/* The value has changed. */
#define WP_VALUE_CHANGED 2
/* The value has not changed. */
#define WP_VALUE_NOT_CHANGED 3
+#define BP_TEMPFLAG 1
+#define BP_HARDWAREFLAG 2
+
/* Check watchpoint condition. */
+
static int
-watchpoint_check (p)
- char *p;
+watchpoint_check (PTR p)
{
bpstat bs = (bpstat) p;
- FRAME fr;
-
+ struct breakpoint *b;
+ struct frame_info *fr;
int within_current_scope;
- if (bs->breakpoint_at->exp_valid_block == NULL)
+
+ b = bs->breakpoint_at;
+
+ if (b->exp_valid_block == NULL)
within_current_scope = 1;
else
{
- fr = within_scope (bs->breakpoint_at->exp_valid_block);
- within_current_scope = fr != NULL;
+ /* There is no current frame at this moment. If we're going to have
+ any chance of handling watchpoints on local variables, we'll need
+ the frame chain (so we can determine if we're in scope). */
+ reinit_frame_cache ();
+ fr = find_frame_addr_in_frame_chain (b->watchpoint_frame);
+ within_current_scope = (fr != NULL);
if (within_current_scope)
/* If we end up stopping, the current frame will get selected
in normal_stop. So this call to select_frame won't affect
the user. */
select_frame (fr, -1);
}
-
+
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. */
+ call free_all_values. We can't call free_all_values because
+ we might be in the middle of evaluating a function call. */
value_ptr mark = value_mark ();
value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp);
- if (!value_equal (bs->breakpoint_at->val, new_val))
+ if (!value_equal (b->val, new_val))
{
release_value (new_val);
value_free_to_mark (mark);
- bs->old_val = bs->breakpoint_at->val;
- bs->breakpoint_at->val = new_val;
+ bs->old_val = b->val;
+ b->val = new_val;
/* We will stop here */
return WP_VALUE_CHANGED;
}
else
{
/* 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
- garbage (in the case of a function, it may have two
- garbage values, one before and one after the prologue).
- So we can't even detect the first assignment to it and
- watch after that (since the garbage may or may not equal
- the first value assigned). */
- bs->breakpoint_at->enable = disabled;
+ if we temporarily ignored the watchpoint, then when
+ we reenter the block in which it is valid it contains
+ garbage (in the case of a function, it may have two
+ garbage values, one before and one after the prologue).
+ 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. */
+#ifdef UI_OUT
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ ui_out_field_string (uiout, "reason", "watchpoint-scope");
+ ui_out_text (uiout, "\nWatchpoint ");
+ ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number);
+ ui_out_text (uiout, " deleted because the program has left the block in\n\
+which its expression is valid.\n");
+#else
printf_filtered ("\
-Watchpoint %d disabled because the program has left the block in\n\
+Watchpoint %d deleted because the program has left the block in\n\
which its expression is valid.\n", bs->breakpoint_at->number);
- return WP_DISABLED;
- }
-}
-
-/* This is used when everything which needs to be printed has
- already been printed. But we still want to print the frame. */
-static int
-print_it_done (bs)
- bpstat bs;
-{
- return 0;
-}
+#endif
-/* This is used when nothing should be printed for this bpstat entry. */
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
-static int
-print_it_noop (bs)
- bpstat bs;
-{
- return -1;
+ return WP_DELETED;
+ }
}
/* Get a bpstat associated with having just stopped at address *PC
- and frame address FRAME_ADDRESS. Update *PC to point at the
+ and frame address CORE_ADDRESS. Update *PC to point at the
breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero
if this is known to not be a real breakpoint (it could still be a
watchpoint, though). */
/* Determine whether we stopped at a breakpoint, etc, or whether we
don't understand this stop. Result is a chain of bpstat's such that:
- if we don't understand the stop, the result is a null pointer.
+ if we don't understand the stop, the result is a null pointer.
- if we understand why we stopped, the result is not null.
+ if we understand why we stopped, the result is not null.
- Each element of the chain refers to a particular breakpoint or
- watchpoint at which we have stopped. (We may have stopped for
- several reasons concurrently.)
+ Each element of the chain refers to a particular breakpoint or
+ watchpoint at which we have stopped. (We may have stopped for
+ several reasons concurrently.)
- Each element of the chain has valid next, breakpoint_at,
- commands, FIXME??? fields.
-
- */
+ Each element of the chain has valid next, breakpoint_at,
+ commands, FIXME??? fields. */
bpstat
-bpstat_stop_status (pc, frame_address, not_a_breakpoint)
- CORE_ADDR *pc;
- FRAME_ADDR frame_address;
- int not_a_breakpoint;
+bpstat_stop_status (CORE_ADDR *pc, int not_a_breakpoint)
{
- register struct breakpoint *b;
+ register struct breakpoint *b, *temp;
CORE_ADDR bp_addr;
-#if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS)
/* True if we've hit a breakpoint (as opposed to a watchpoint). */
int real_breakpoint = 0;
-#endif
/* Root of the chain of bpstat's */
- struct bpstat root_bs[1];
+ struct bpstats root_bs[1];
/* Pointer to the last thing in the chain currently. */
bpstat bs = root_bs;
+ static char message1[] =
+ "Error evaluating expression for watchpoint %d\n";
+ char message[sizeof (message1) + 30 /* slop */ ];
/* Get the address where the breakpoint would have been. */
- bp_addr = *pc - DECR_PC_AFTER_BREAK;
+ bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P ?
+ 0 : DECR_PC_AFTER_BREAK);
- ALL_BREAKPOINTS (b)
- {
- if (b->enable == disabled)
- continue;
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ if (b->enable == disabled
+ || b->enable == shlib_disabled
+ || b->enable == call_disabled)
+ continue;
- if (b->type != bp_watchpoint && b->address != bp_addr)
+ if (b->type != bp_watchpoint
+ && b->type != bp_hardware_watchpoint
+ && b->type != bp_read_watchpoint
+ && b->type != bp_access_watchpoint
+ && b->type != bp_hardware_breakpoint
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_catch
+ && b->type != bp_catch_throw) /* a non-watchpoint bp */
+ if (b->address != bp_addr || /* address doesn't match or */
+ (overlay_debugging && /* overlay doesn't match */
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section)))
continue;
- if (b->type != bp_watchpoint && not_a_breakpoint)
- continue;
+ if (b->type == bp_hardware_breakpoint
+ && b->address != (*pc - DECR_PC_AFTER_HW_BREAK))
+ continue;
+
+ /* Is this a catchpoint of a load or unload? If so, did we
+ get a load or unload of the specified library? If not,
+ ignore it. */
+ if ((b->type == bp_catch_load)
+#if defined(SOLIB_HAVE_LOAD_EVENT)
+ && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid)
+ || ((b->dll_pathname != NULL)
+ && (strcmp (b->dll_pathname,
+ SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid))
+ != 0)))
+#endif
+ )
+ continue;
+
+ if ((b->type == bp_catch_unload)
+#if defined(SOLIB_HAVE_UNLOAD_EVENT)
+ && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid)
+ || ((b->dll_pathname != NULL)
+ && (strcmp (b->dll_pathname,
+ SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid))
+ != 0)))
+#endif
+ )
+ continue;
- /* Come here if it's a watchpoint, or if the break address matches */
+ if ((b->type == bp_catch_fork)
+ && !target_has_forked (inferior_pid, &b->forked_inferior_pid))
+ continue;
- bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */
+ if ((b->type == bp_catch_vfork)
+ && !target_has_vforked (inferior_pid, &b->forked_inferior_pid))
+ continue;
- bs->stop = 1;
- bs->print = 1;
+ if ((b->type == bp_catch_exec)
+ && !target_has_execd (inferior_pid, &b->exec_pathname))
+ continue;
- if (b->type == bp_watchpoint)
- {
- static char message1[] =
- "Error evaluating expression for watchpoint %d\n";
- char message[sizeof (message1) + 30 /* slop */];
- sprintf (message, message1, b->number);
- switch (catch_errors (watchpoint_check, (char *) bs, message,
+ if (ep_is_exception_catchpoint (b) &&
+ !(current_exception_event = target_get_current_exception_event ()))
+ continue;
+
+ /* Come here if it's a watchpoint, or if the break address matches */
+
+ bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */
+
+ /* Watchpoints may change this, if not found to have triggered. */
+ bs->stop = 1;
+ bs->print = 1;
+
+ sprintf (message, message1, b->number);
+ if (b->type == bp_watchpoint ||
+ b->type == bp_hardware_watchpoint)
+ {
+ switch (catch_errors (watchpoint_check, bs, message,
+ RETURN_MASK_ALL))
+ {
+ case WP_DELETED:
+ /* We've already printed what needs to be printed. */
+ /* Actually this is superfluous, because by the time we
+ call print_it_typical() the wp will be already deleted,
+ and the function will return immediately. */
+ bs->print_it = print_it_done;
+ /* Stop. */
+ break;
+ case WP_VALUE_CHANGED:
+ /* Stop. */
+ ++(b->hit_count);
+ break;
+ case WP_VALUE_NOT_CHANGED:
+ /* Don't stop. */
+ bs->print_it = print_it_noop;
+ bs->stop = 0;
+ continue;
+ default:
+ /* Can't happen. */
+ /* FALLTHROUGH */
+ case 0:
+ /* Error from catch_errors. */
+ printf_filtered ("Watchpoint %d deleted.\n", b->number);
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
+ /* We've already printed what needs to be printed. */
+ bs->print_it = print_it_done;
+
+ /* Stop. */
+ break;
+ }
+ }
+ else if (b->type == bp_read_watchpoint ||
+ b->type == bp_access_watchpoint)
+ {
+ CORE_ADDR addr;
+ value_ptr v;
+ int found = 0;
+
+ addr = target_stopped_data_address ();
+ if (addr == 0)
+ continue;
+ for (v = b->val_chain; v; v = v->next)
+ {
+ if (VALUE_LVAL (v) == lval_memory
+ && ! VALUE_LAZY (v))
+ {
+ struct type *vtype = check_typedef (VALUE_TYPE (v));
+
+ if (v == b->val_chain
+ || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+ && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+ {
+ CORE_ADDR vaddr;
+
+ vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+ /* Exact match not required. Within range is
+ sufficient. */
+ if (addr >= vaddr &&
+ addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v)))
+ found = 1;
+ }
+ }
+ }
+ if (found)
+ switch (catch_errors (watchpoint_check, bs, message,
RETURN_MASK_ALL))
{
- case WP_DISABLED:
+ case WP_DELETED:
/* We've already printed what needs to be printed. */
bs->print_it = print_it_done;
/* Stop. */
break;
case WP_VALUE_CHANGED:
- /* Stop. */
+ if (b->type == bp_read_watchpoint)
+ {
+ /* Don't stop: read watchpoints shouldn't fire if
+ the value has changed. This is for targets which
+ cannot set read-only watchpoints. */
+ bs->print_it = print_it_noop;
+ bs->stop = 0;
+ continue;
+ }
+ ++(b->hit_count);
break;
case WP_VALUE_NOT_CHANGED:
- /* Don't stop. */
- bs->print_it = print_it_noop;
- bs->stop = 0;
- continue;
+ /* Stop. */
+ ++(b->hit_count);
+ break;
default:
/* Can't happen. */
- /* FALLTHROUGH */
case 0:
/* Error from catch_errors. */
- b->enable = disabled;
- printf_filtered ("Watchpoint %d disabled.\n", b->number);
+ printf_filtered ("Watchpoint %d deleted.\n", b->number);
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
/* We've already printed what needs to be printed. */
bs->print_it = print_it_done;
- /* Stop. */
break;
}
- }
-#if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS)
- else
+ else /* found == 0 */
+ {
+ /* This is a case where some watchpoint(s) triggered,
+ but not at the address of this watchpoint (FOUND
+ was left zero). So don't print anything for this
+ watchpoint. */
+ bs->print_it = print_it_noop;
+ bs->stop = 0;
+ continue;
+ }
+ }
+ else
+ {
+ /* By definition, an encountered breakpoint is a triggered
+ breakpoint. */
+ ++(b->hit_count);
+
real_breakpoint = 1;
-#endif
+ }
- if (b->frame && b->frame != frame_address)
- bs->stop = 0;
- else
- {
- int value_is_zero = 0;
+ if (b->frame &&
+ b->frame != (get_current_frame ())->frame)
+ bs->stop = 0;
+ else
+ {
+ int value_is_zero = 0;
- if (b->cond)
- {
- /* Need to select the frame, with all that implies
- so that the conditions will have the right context. */
- select_frame (get_current_frame (), 0);
- value_is_zero
- = catch_errors (breakpoint_cond_eval, (char *)(b->cond),
- "Error in testing breakpoint condition:\n",
- RETURN_MASK_ALL);
- /* FIXME-someday, should give breakpoint # */
- free_all_values ();
- }
- if (b->cond && value_is_zero)
- {
- bs->stop = 0;
- }
- else if (b->ignore_count > 0)
- {
- b->ignore_count--;
- bs->stop = 0;
- }
- else
- {
- /* We will stop here */
- if (b->disposition == disable)
- b->enable = disabled;
- bs->commands = b->commands;
- if (b->silent)
+ if (b->cond)
+ {
+ /* Need to select the frame, with all that implies
+ so that the conditions will have the right context. */
+ select_frame (get_current_frame (), 0);
+ value_is_zero
+ = catch_errors (breakpoint_cond_eval, (b->cond),
+ "Error in testing breakpoint condition:\n",
+ RETURN_MASK_ALL);
+ /* FIXME-someday, should give breakpoint # */
+ free_all_values ();
+ }
+ if (b->cond && value_is_zero)
+ {
+ bs->stop = 0;
+ /* Don't consider this a hit. */
+ --(b->hit_count);
+ }
+ else if (b->ignore_count > 0)
+ {
+ b->ignore_count--;
+ annotate_ignore_count_change ();
+ bs->stop = 0;
+ }
+ else
+ {
+ /* We will stop here */
+ if (b->disposition == disable)
+ b->enable = disabled;
+ bs->commands = b->commands;
+ if (b->silent)
+ bs->print = 0;
+ if (bs->commands &&
+ (STREQ ("silent", bs->commands->line) ||
+ (xdb_commands && STREQ ("Q", bs->commands->line))))
+ {
+ bs->commands = bs->commands->next;
bs->print = 0;
- if (bs->commands && STREQ ("silent", bs->commands->line))
- {
- bs->commands = bs->commands->next;
- bs->print = 0;
- }
- }
- }
- /* Print nothing for this entry if we dont stop or if we dont print. */
- if (bs->stop == 0 || bs->print == 0)
- bs->print_it = print_it_noop;
- }
+ }
+ }
+ }
+ /* Print nothing for this entry if we dont stop or if we dont print. */
+ if (bs->stop == 0 || bs->print == 0)
+ bs->print_it = print_it_noop;
+ }
bs->next = NULL; /* Terminate the chain */
bs = root_bs->next; /* Re-grab the head of the chain */
-#if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS)
- if (bs)
+
+ if (real_breakpoint && bs)
{
- if (real_breakpoint)
+ if (bs->breakpoint_at->type == bp_hardware_breakpoint)
+ {
+ if (DECR_PC_AFTER_HW_BREAK != 0)
+ {
+ *pc = *pc - DECR_PC_AFTER_HW_BREAK;
+ write_pc (*pc);
+ }
+ }
+ else
{
- *pc = bp_addr;
+ if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs)
+ {
+ *pc = bp_addr;
#if defined (SHIFT_INST_REGS)
- SHIFT_INST_REGS();
+ SHIFT_INST_REGS ();
#else /* No SHIFT_INST_REGS. */
- write_pc (bp_addr);
+ write_pc (bp_addr);
#endif /* No SHIFT_INST_REGS. */
+ }
}
}
-#endif /* DECR_PC_AFTER_BREAK != 0. */
+
+ /* The value of a hardware watchpoint hasn't changed, but the
+ intermediate memory locations we are watching may have. */
+ if (bs && !bs->stop &&
+ (bs->breakpoint_at->type == bp_hardware_watchpoint ||
+ bs->breakpoint_at->type == bp_read_watchpoint ||
+ bs->breakpoint_at->type == bp_access_watchpoint))
+ {
+ remove_breakpoints ();
+ insert_breakpoints ();
+ }
return bs;
}
\f
/* Tell what to do about this bpstat. */
struct bpstat_what
-bpstat_what (bs)
- bpstat bs;
+bpstat_what (bpstat bs)
{
/* Classify each bpstat as one of the following. */
- enum class {
- /* This bpstat element has no effect on the main_action. */
- no_effect = 0,
+ enum class
+ {
+ /* This bpstat element has no effect on the main_action. */
+ no_effect = 0,
- /* There was a watchpoint, stop but don't print. */
- wp_silent,
+ /* There was a watchpoint, stop but don't print. */
+ wp_silent,
- /* There was a watchpoint, stop and print. */
- wp_noisy,
+ /* There was a watchpoint, stop and print. */
+ wp_noisy,
- /* There was a breakpoint but we're not stopping. */
- bp_nostop,
+ /* There was a breakpoint but we're not stopping. */
+ bp_nostop,
- /* There was a breakpoint, stop but don't print. */
- bp_silent,
+ /* There was a breakpoint, stop but don't print. */
+ bp_silent,
- /* There was a breakpoint, stop and print. */
- bp_noisy,
+ /* There was a breakpoint, stop and print. */
+ bp_noisy,
- /* We hit the longjmp breakpoint. */
- long_jump,
+ /* We hit the longjmp breakpoint. */
+ long_jump,
- /* We hit the longjmp_resume breakpoint. */
- long_resume,
+ /* We hit the longjmp_resume breakpoint. */
+ long_resume,
- /* We hit the step_resume breakpoint. */
- step_resume,
+ /* We hit the step_resume breakpoint. */
+ step_resume,
- /* We hit the through_sigtramp breakpoint. */
- through_sig,
+ /* We hit the through_sigtramp breakpoint. */
+ through_sig,
- /* This is just used to count how many enums there are. */
- class_last
+ /* We hit the shared library event breakpoint. */
+ shlib_event,
+
+ /* We caught a shared library event. */
+ catch_shlib_event,
+
+ /* This is just used to count how many enums there are. */
+ class_last
};
/* Here is the table which drives this routine. So that we can
format it pretty, we define some abbreviations for the
enum bpstat_what codes. */
-#define keep_c BPSTAT_WHAT_KEEP_CHECKING
-#define stop_s BPSTAT_WHAT_STOP_SILENT
-#define stop_n BPSTAT_WHAT_STOP_NOISY
-#define single BPSTAT_WHAT_SINGLE
-#define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME
-#define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
-#define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
+#define kc BPSTAT_WHAT_KEEP_CHECKING
+#define ss BPSTAT_WHAT_STOP_SILENT
+#define sn BPSTAT_WHAT_STOP_NOISY
+#define sgl BPSTAT_WHAT_SINGLE
+#define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
+#define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
+#define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
#define sr BPSTAT_WHAT_STEP_RESUME
#define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
+#define shl BPSTAT_WHAT_CHECK_SHLIBS
+#define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
/* "Can't happen." Might want to print an error message.
abort() is not out of the question, but chances are GDB is just
as bp_silent and wp_noisy is the same as bp_noisy. That is because
after stopping, the check for whether to step over a breakpoint
(BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
- reference to how we stopped. We retain separate wp_silent and bp_silent
- codes in case we want to change that someday. */
+ reference to how we stopped. We retain separate wp_silent and
+ bp_silent codes in case we want to change that someday.
+
+ Another possibly interesting property of this table is that
+ there's a partial ordering, priority-like, of the actions. Once
+ you've decided that some action is appropriate, you'll never go
+ back and decide something of a lower priority is better. The
+ ordering is:
+
+ kc < clr sgl shl slr sn sr ss ts
+ sgl < clrs shl shlr slr sn sr ss ts
+ slr < err shl shlr sn sr ss ts
+ clr < clrs err shl shlr sn sr ss ts
+ clrs < err shl shlr sn sr ss ts
+ ss < shl shlr sn sr ts
+ sn < shl shlr sr ts
+ sr < shl shlr ts
+ shl < shlr
+ ts <
+ shlr <
+
+ What I think this means is that we don't need a damned table
+ here. If you just put the rows and columns in the right order,
+ it'd look awfully regular. We could simply walk the bpstat list
+ and choose the highest priority action we find, with a little
+ logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
+ CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
+ is messy anyway). */
/* step_resume entries: a step resume breakpoint overrides another
breakpoint of signal handling (see comment in wait_for_inferior
one of those and a step_resume_breakpoint is probably very rare (?). */
static const enum bpstat_what_main_action
- table[(int)class_last][(int)BPSTAT_WHAT_LAST] =
- {
- /* old action */
- /* keep_c stop_s stop_n single setlr clrlr clrlrs sr ts
- */
-/*no_effect*/ {keep_c,stop_s,stop_n,single, setlr , clrlr , clrlrs, sr, ts},
-/*wp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts},
-/*wp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts},
-/*bp_nostop*/ {single,stop_s,stop_n,single, setlr , clrlrs, clrlrs, sr, ts},
-/*bp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts},
-/*bp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts},
-/*long_jump*/ {setlr ,stop_s,stop_n,setlr , err , err , err , sr, ts},
-/*long_resume*/ {clrlr ,stop_s,stop_n,clrlrs, err , err , err , sr, ts},
-/*step_resume*/ {sr ,sr ,sr ,sr , sr , sr , sr , sr, ts},
-/*through_sig*/ {ts ,ts ,ts ,ts , ts , ts , ts , ts, ts}
- };
-#undef keep_c
-#undef stop_s
-#undef stop_n
-#undef single
-#undef setlr
-#undef clrlr
-#undef clrlrs
+ table[(int) class_last][(int) BPSTAT_WHAT_LAST] =
+ {
+ /* old action */
+ /* kc ss sn sgl slr clr clrs sr ts shl shlr
+ */
+/*no_effect */
+ {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr},
+/*wp_silent */
+ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr},
+/*wp_noisy */
+ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr},
+/*bp_nostop */
+ {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr},
+/*bp_silent */
+ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr},
+/*bp_noisy */
+ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr},
+/*long_jump */
+ {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr},
+/*long_resume */
+ {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr},
+/*step_resume */
+ {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr},
+/*through_sig */
+ {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr},
+/*shlib */
+ {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr},
+/*catch_shlib */
+ {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr}
+ };
+
+#undef kc
+#undef ss
+#undef sn
+#undef sgl
+#undef slr
+#undef clr
+#undef clrs
#undef err
#undef sr
#undef ts
+#undef shl
+#undef shlr
enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING;
struct bpstat_what retval;
continue;
switch (bs->breakpoint_at->type)
{
+ case bp_none:
+ continue;
+
case bp_breakpoint:
+ case bp_hardware_breakpoint:
case bp_until:
case bp_finish:
if (bs->stop)
bs_class = bp_nostop;
break;
case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
if (bs->stop)
{
if (bs->print)
bs_class = wp_silent;
}
else
- /* There was a watchpoint, but we're not stopping. This requires
- no further action. */
+ /* There was a watchpoint, but we're not stopping.
+ This requires no further action. */
bs_class = no_effect;
break;
case bp_longjmp:
case bp_through_sigtramp:
bs_class = through_sig;
break;
+ case bp_watchpoint_scope:
+ bs_class = bp_nostop;
+ break;
+ case bp_shlib_event:
+ bs_class = shlib_event;
+ break;
+ case bp_thread_event:
+ bs_class = bp_nostop;
+ break;
+ case bp_catch_load:
+ case bp_catch_unload:
+ /* Only if this catchpoint triggered should we cause the
+ step-out-of-dld behaviour. Otherwise, we ignore this
+ catchpoint. */
+ if (bs->stop)
+ bs_class = catch_shlib_event;
+ else
+ bs_class = no_effect;
+ break;
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
+ if (bs->stop)
+ {
+ if (bs->print)
+ bs_class = bp_noisy;
+ else
+ bs_class = bp_silent;
+ }
+ else
+ /* There was a catchpoint, but we're not stopping.
+ This requires no further action. */
+ bs_class = no_effect;
+ break;
+ case bp_catch_catch:
+ if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH)
+ bs_class = bp_nostop;
+ else if (bs->stop)
+ bs_class = bs->print ? bp_noisy : bp_silent;
+ break;
+ case bp_catch_throw:
+ if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW)
+ bs_class = bp_nostop;
+ else if (bs->stop)
+ bs_class = bs->print ? bp_noisy : bp_silent;
+ break;
case bp_call_dummy:
- /* Make sure the action is stop (silent or noisy), so infrun.c
- pops the dummy frame. */
+ /* Make sure the action is stop (silent or noisy),
+ so infrun.c pops the dummy frame. */
bs_class = bp_silent;
retval.call_dummy = 1;
break;
}
- current_action = table[(int)bs_class][(int)current_action];
+ current_action = table[(int) bs_class][(int) current_action];
}
retval.main_action = current_action;
return retval;
without hardware support). This isn't related to a specific bpstat,
just to things like whether watchpoints are set. */
-int
-bpstat_should_step ()
+int
+bpstat_should_step (void)
{
struct breakpoint *b;
ALL_BREAKPOINTS (b)
if (b->enable == enabled && b->type == bp_watchpoint)
- return 1;
+ return 1;
+ return 0;
+}
+
+/* Nonzero if there are enabled hardware watchpoints. */
+int
+bpstat_have_active_hw_watchpoints (void)
+{
+ struct breakpoint *b;
+ ALL_BREAKPOINTS (b)
+ if ((b->enable == enabled) &&
+ (b->inserted) &&
+ ((b->type == bp_hardware_watchpoint) ||
+ (b->type == bp_read_watchpoint) ||
+ (b->type == bp_access_watchpoint)))
+ return 1;
return 0;
}
\f
+
+/* Given a bpstat that records zero or more triggered eventpoints, this
+ function returns another bpstat which contains only the catchpoints
+ on that first list, if any. */
+void
+bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list)
+{
+ struct bpstats root_bs[1];
+ bpstat bs = root_bs;
+ struct breakpoint *ep;
+ char *dll_pathname;
+
+ bpstat_clear (cp_list);
+ root_bs->next = NULL;
+
+ for (; ep_list != NULL; ep_list = ep_list->next)
+ {
+ /* Is this eventpoint a catchpoint? If not, ignore it. */
+ ep = ep_list->breakpoint_at;
+ if (ep == NULL)
+ break;
+ if ((ep->type != bp_catch_load) &&
+ (ep->type != bp_catch_unload) &&
+ (ep->type != bp_catch_catch) &&
+ (ep->type != bp_catch_throw))
+ /* pai: (temp) ADD fork/vfork here!! */
+ continue;
+
+ /* Yes; add it to the list. */
+ bs = bpstat_alloc (ep, bs);
+ *bs = *ep_list;
+ bs->next = NULL;
+ bs = root_bs->next;
+
+#if defined(SOLIB_ADD)
+ /* Also, for each triggered catchpoint, tag it with the name of
+ the library that caused this trigger. (We copy the name now,
+ because it's only guaranteed to be available NOW, when the
+ catchpoint triggers. Clients who may wish to know the name
+ later must get it from the catchpoint itself.) */
+ if (ep->triggered_dll_pathname != NULL)
+ free (ep->triggered_dll_pathname);
+ if (ep->type == bp_catch_load)
+ dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid);
+ else
+ dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid);
+#else
+ dll_pathname = NULL;
+#endif
+ if (dll_pathname)
+ {
+ ep->triggered_dll_pathname = (char *)
+ xmalloc (strlen (dll_pathname) + 1);
+ strcpy (ep->triggered_dll_pathname, dll_pathname);
+ }
+ else
+ ep->triggered_dll_pathname = NULL;
+ }
+
+ *cp_list = bs;
+}
+
+/* Print B to gdb_stdout. */
+static void
+print_one_breakpoint (struct breakpoint *b,
+ CORE_ADDR *last_addr)
+{
+ register struct command_line *l;
+ register struct symbol *sym;
+ struct ep_type_description
+ {
+ enum bptype type;
+ char *description;
+ };
+ static struct ep_type_description bptypes[] =
+ {
+ {bp_none, "?deleted?"},
+ {bp_breakpoint, "breakpoint"},
+ {bp_hardware_breakpoint, "hw breakpoint"},
+ {bp_until, "until"},
+ {bp_finish, "finish"},
+ {bp_watchpoint, "watchpoint"},
+ {bp_hardware_watchpoint, "hw watchpoint"},
+ {bp_read_watchpoint, "read watchpoint"},
+ {bp_access_watchpoint, "acc watchpoint"},
+ {bp_longjmp, "longjmp"},
+ {bp_longjmp_resume, "longjmp resume"},
+ {bp_step_resume, "step resume"},
+ {bp_through_sigtramp, "sigtramp"},
+ {bp_watchpoint_scope, "watchpoint scope"},
+ {bp_call_dummy, "call dummy"},
+ {bp_shlib_event, "shlib events"},
+ {bp_thread_event, "thread events"},
+ {bp_catch_load, "catch load"},
+ {bp_catch_unload, "catch unload"},
+ {bp_catch_fork, "catch fork"},
+ {bp_catch_vfork, "catch vfork"},
+ {bp_catch_exec, "catch exec"},
+ {bp_catch_catch, "catch catch"},
+ {bp_catch_throw, "catch throw"}
+ };
+
+ static char *bpdisps[] =
+ {"del", "dstp", "dis", "keep"};
+ static char bpenables[] = "nynny";
+ char wrap_indent[80];
+#ifdef UI_OUT
+ struct ui_stream *stb = ui_out_stream_new (uiout);
+ struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb);
+#endif
+
+ annotate_record ();
+#ifdef UI_OUT
+ ui_out_list_begin (uiout, "bkpt");
+#endif
+
+ /* 1 */
+ annotate_field (0);
+#ifdef UI_OUT
+ ui_out_field_int (uiout, "number", b->number);
+#else
+ printf_filtered ("%-3d ", b->number);
+#endif
+
+ /* 2 */
+ annotate_field (1);
+ if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0])))
+ || ((int) b->type != bptypes[(int) b->type].type))
+ internal_error ("bptypes table does not describe type #%d.",
+ (int) b->type);
+#ifdef UI_OUT
+ ui_out_field_string (uiout, "type", bptypes[(int) b->type].description);
+#else
+ printf_filtered ("%-14s ", bptypes[(int) b->type].description);
+#endif
+
+ /* 3 */
+ annotate_field (2);
+#ifdef UI_OUT
+ ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]);
+#else
+ printf_filtered ("%-4s ", bpdisps[(int) b->disposition]);
+#endif
+
+ /* 4 */
+ annotate_field (3);
+#ifdef UI_OUT
+ ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable]);
+ ui_out_spaces (uiout, 2);
+#else
+ printf_filtered ("%-3c ", bpenables[(int) b->enable]);
+#endif
+
+ /* 5 and 6 */
+ strcpy (wrap_indent, " ");
+ if (addressprint)
+ strcat (wrap_indent, " ");
+ switch (b->type)
+ {
+ case bp_none:
+ internal_error ("print_one_breakpoint: bp_none encountered\n");
+ break;
+
+ case bp_watchpoint:
+ 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). */
+#ifdef UI_OUT
+ if (addressprint)
+ ui_out_field_skip (uiout, "addr");
+ annotate_field (5);
+ print_expression (b->exp, stb->stream);
+ ui_out_field_stream (uiout, "what", stb);
+#else
+ annotate_field (5);
+ print_expression (b->exp, gdb_stdout);
+#endif
+ break;
+
+ case bp_catch_load:
+ case bp_catch_unload:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+#ifdef UI_OUT
+ if (addressprint)
+ ui_out_field_skip (uiout, "addr");
+ annotate_field (5);
+ if (b->dll_pathname == NULL)
+ {
+ ui_out_field_string (uiout, "what", "<any library>");
+ ui_out_spaces (uiout, 1);
+ }
+ else
+ {
+ ui_out_text (uiout, "library \"");
+ ui_out_field_string (uiout, "what", b->dll_pathname);
+ ui_out_text (uiout, "\" ");
+ }
+#else
+ annotate_field (5);
+ if (b->dll_pathname == NULL)
+ printf_filtered ("<any library> ");
+ else
+ printf_filtered ("library \"%s\" ", b->dll_pathname);
+#endif
+ break;
+
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+#ifdef UI_OUT
+ if (addressprint)
+ ui_out_field_skip (uiout, "addr");
+ annotate_field (5);
+ if (b->forked_inferior_pid != 0)
+ {
+ ui_out_text (uiout, "process ");
+ ui_out_field_int (uiout, "what", b->forked_inferior_pid);
+ ui_out_spaces (uiout, 1);
+ }
+#else
+ annotate_field (5);
+ if (b->forked_inferior_pid != 0)
+ printf_filtered ("process %d ", b->forked_inferior_pid);
+ break;
+#endif
+
+ case bp_catch_exec:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+#ifdef UI_OUT
+ if (addressprint)
+ ui_out_field_skip (uiout, "addr");
+ annotate_field (5);
+ if (b->exec_pathname != NULL)
+ {
+ ui_out_text (uiout, "program \"");
+ ui_out_field_string (uiout, "what", b->exec_pathname);
+ ui_out_text (uiout, "\" ");
+ }
+#else
+ annotate_field (5);
+ if (b->exec_pathname != NULL)
+ printf_filtered ("program \"%s\" ", b->exec_pathname);
+#endif
+ break;
+
+ case bp_catch_catch:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+#ifdef UI_OUT
+ if (addressprint)
+ ui_out_field_skip (uiout, "addr");
+ annotate_field (5);
+ ui_out_field_string (uiout, "what", "exception catch");
+ ui_out_spaces (uiout, 1);
+#else
+ annotate_field (5);
+ printf_filtered ("exception catch ");
+#endif
+ break;
+
+ case bp_catch_throw:
+ /* Field 4, the address, is omitted (which makes the columns
+ not line up too nicely with the headers, but the effect
+ is relatively readable). */
+#ifdef UI_OUT
+ if (addressprint)
+ ui_out_field_skip (uiout, "addr");
+ annotate_field (5);
+ ui_out_field_string (uiout, "what", "exception throw");
+ ui_out_spaces (uiout, 1);
+#else
+ annotate_field (5);
+ printf_filtered ("exception throw ");
+#endif
+ break;
+
+ case bp_breakpoint:
+ case bp_hardware_breakpoint:
+ case bp_until:
+ case bp_finish:
+ case bp_longjmp:
+ case bp_longjmp_resume:
+ case bp_step_resume:
+ case bp_through_sigtramp:
+ case bp_watchpoint_scope:
+ case bp_call_dummy:
+ case bp_shlib_event:
+ case bp_thread_event:
+#ifdef UI_OUT
+ if (addressprint)
+ {
+ annotate_field (4);
+ ui_out_field_core_addr (uiout, "addr", b->address);
+ }
+ annotate_field (5);
+ *last_addr = b->address;
+ if (b->source_file)
+ {
+ sym = find_pc_sect_function (b->address, b->section);
+ if (sym)
+ {
+ ui_out_text (uiout, "in ");
+ ui_out_field_string (uiout, "func",
+ SYMBOL_SOURCE_NAME (sym));
+ ui_out_wrap_hint (uiout, wrap_indent);
+ ui_out_text (uiout, " at ");
+ }
+ ui_out_field_string (uiout, "file", b->source_file);
+ ui_out_text (uiout, ":");
+ ui_out_field_int (uiout, "line", b->line_number);
+ }
+ else
+ {
+ print_address_symbolic (b->address, stb->stream, demangle, "");
+ ui_out_field_stream (uiout, "at", stb);
+ }
+#else
+ if (addressprint)
+ {
+ annotate_field (4);
+ /* FIXME-32x64: need a print_address_numeric with
+ field width */
+ printf_filtered
+ ("%s ",
+ local_hex_string_custom
+ ((unsigned long) b->address, "08l"));
+ }
+ annotate_field (5);
+ *last_addr = b->address;
+ if (b->source_file)
+ {
+ sym = find_pc_sect_function (b->address, b->section);
+ if (sym)
+ {
+ fputs_filtered ("in ", gdb_stdout);
+ fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout);
+ wrap_here (wrap_indent);
+ fputs_filtered (" at ", gdb_stdout);
+ }
+ fputs_filtered (b->source_file, gdb_stdout);
+ printf_filtered (":%d", b->line_number);
+ }
+ else
+ print_address_symbolic (b->address, gdb_stdout, demangle, " ");
+#endif
+ break;
+ }
+
+ if (b->thread != -1)
+ {
+#ifdef UI_OUT
+ /* FIXME: This seems to be redundant and lost here; see the
+ "stop only in" line a little further down. */
+ ui_out_text (uiout, " thread ");
+ ui_out_field_int (uiout, "thread", b->thread);
+#else
+ printf_filtered (" thread %d", b->thread);
+#endif
+ }
+
+#ifdef UI_OUT
+ ui_out_text (uiout, "\n");
+#else
+ printf_filtered ("\n");
+#endif
+
+ if (b->frame)
+ {
+ annotate_field (6);
+#ifdef UI_OUT
+ ui_out_text (uiout, "\tstop only in stack frame at ");
+ ui_out_field_core_addr (uiout, "frame", b->frame);
+ ui_out_text (uiout, "\n");
+#else
+ printf_filtered ("\tstop only in stack frame at ");
+ print_address_numeric (b->frame, 1, gdb_stdout);
+ printf_filtered ("\n");
+#endif
+ }
+
+ if (b->cond)
+ {
+ annotate_field (7);
+#ifdef UI_OUT
+ ui_out_text (uiout, "\tstop only if ");
+ print_expression (b->cond, stb->stream);
+ ui_out_field_stream (uiout, "cond", stb);
+ ui_out_text (uiout, "\n");
+#else
+ printf_filtered ("\tstop only if ");
+ print_expression (b->cond, gdb_stdout);
+ printf_filtered ("\n");
+#endif
+ }
+
+ if (b->thread != -1)
+ {
+ /* FIXME should make an annotation for this */
+#ifdef UI_OUT
+ ui_out_text (uiout, "\tstop only in thread ");
+ ui_out_field_int (uiout, "thread", b->thread);
+ ui_out_text (uiout, "\n");
+#else
+ printf_filtered ("\tstop only in thread %d\n", b->thread);
+#endif
+ }
+
+ if (show_breakpoint_hit_counts && b->hit_count)
+ {
+ /* FIXME should make an annotation for this */
+#ifdef UI_OUT
+ if (ep_is_catchpoint (b))
+ ui_out_text (uiout, "\tcatchpoint");
+ else
+ ui_out_text (uiout, "\tbreakpoint");
+ ui_out_text (uiout, " already hit ");
+ ui_out_field_int (uiout, "times", b->hit_count);
+ if (b->hit_count == 1)
+ ui_out_text (uiout, " time\n");
+ else
+ ui_out_text (uiout, " times\n");
+#else
+ if (ep_is_catchpoint (b))
+ printf_filtered ("\tcatchpoint");
+ else
+ printf_filtered ("\tbreakpoint");
+ printf_filtered (" already hit %d time%s\n",
+ b->hit_count, (b->hit_count == 1 ? "" : "s"));
+#endif
+ }
+
+#ifdef UI_OUT
+ /* Output the count also if it is zero, but only if this is
+ mi. FIXME: Should have a better test for this. */
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ if (show_breakpoint_hit_counts && b->hit_count == 0)
+ ui_out_field_int (uiout, "times", b->hit_count);
+#endif
+
+ if (b->ignore_count)
+ {
+ annotate_field (8);
+#ifdef UI_OUT
+ ui_out_text (uiout, "\tignore next ");
+ ui_out_field_int (uiout, "ignore", b->ignore_count);
+ ui_out_text (uiout, " hits\n");
+#else
+ printf_filtered ("\tignore next %d hits\n", b->ignore_count);
+#endif
+ }
+
+ if ((l = b->commands))
+ {
+ annotate_field (9);
+#ifdef UI_OUT
+ ui_out_list_begin (uiout, "script");
+ print_command_lines (uiout, l, 4);
+ ui_out_list_end (uiout);
+#else
+ while (l)
+ {
+ print_command_line (l, 4, gdb_stdout);
+ l = l->next;
+ }
+#endif
+ }
+#ifdef UI_OUT
+ ui_out_list_end (uiout);
+ do_cleanups (old_chain);
+#endif
+}
+
+struct captured_breakpoint_query_args
+ {
+ int bnum;
+ };
+
+static int
+do_captured_breakpoint_query (void *data)
+{
+ struct captured_breakpoint_query_args *args = data;
+ register struct breakpoint *b;
+ CORE_ADDR dummy_addr = 0;
+ ALL_BREAKPOINTS (b)
+ {
+ if (args->bnum == b->number)
+ {
+ print_one_breakpoint (b, &dummy_addr);
+ return GDB_RC_OK;
+ }
+ }
+ return GDB_RC_NONE;
+}
+
+enum gdb_rc
+gdb_breakpoint_query (/* output object, */ int bnum)
+{
+ struct captured_breakpoint_query_args args;
+ args.bnum = bnum;
+ /* For the moment we don't trust print_one_breakpoint() to not throw
+ an error. */
+ return catch_errors (do_captured_breakpoint_query, &args,
+ NULL, RETURN_MASK_ALL);
+}
+
/* Print information on breakpoint number BNUM, or -1 if all.
If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS
is nonzero, process only watchpoints. */
static void
-breakpoint_1 (bnum, allflag)
- int bnum;
- int allflag;
+breakpoint_1 (int bnum, int allflag)
{
register struct breakpoint *b;
- register struct command_line *l;
- register struct symbol *sym;
- CORE_ADDR last_addr = (CORE_ADDR)-1;
+ CORE_ADDR last_addr = (CORE_ADDR) -1;
int found_a_breakpoint = 0;
- static char *bptypes[] = {"breakpoint", "until", "finish", "watchpoint",
- "longjmp", "longjmp resume", "step resume",
- "call dummy" };
- static char *bpdisps[] = {"del", "dis", "keep"};
- static char bpenables[] = "ny";
- char wrap_indent[80];
+
+#ifdef UI_OUT
+ if (addressprint)
+ ui_out_table_begin (uiout, 6, "BreakpointTable");
+ else
+ ui_out_table_begin (uiout, 5, "BreakpointTable");
+#endif /* UI_OUT */
ALL_BREAKPOINTS (b)
if (bnum == -1
|| bnum == b->number)
{
-/* We only print out user settable breakpoints unless the allflag is set. */
+ /* We only print out user settable breakpoints unless the
+ allflag is set. */
if (!allflag
&& b->type != bp_breakpoint
- && b->type != bp_watchpoint)
+ && b->type != bp_catch_load
+ && b->type != bp_catch_unload
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_catch
+ && b->type != bp_catch_throw
+ && b->type != bp_hardware_breakpoint
+ && b->type != bp_watchpoint
+ && b->type != bp_read_watchpoint
+ && b->type != bp_access_watchpoint
+ && b->type != bp_hardware_watchpoint)
continue;
-
+
if (!found_a_breakpoint++)
- printf_filtered ("Num Type Disp Enb %sWhat\n",
- addressprint ? "Address " : "");
-
- printf_filtered ("%-3d %-14s %-4s %-3c ",
- b->number,
- bptypes[(int)b->type],
- bpdisps[(int)b->disposition],
- bpenables[(int)b->enable]);
- strcpy (wrap_indent, " ");
- if (addressprint)
- strcat (wrap_indent, " ");
- switch (b->type)
{
- case bp_watchpoint:
- print_expression (b->exp, gdb_stdout);
- break;
-
- case bp_breakpoint:
- case bp_until:
- case bp_finish:
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_step_resume:
- case bp_through_sigtramp:
- case bp_call_dummy:
+ annotate_breakpoints_headers ();
+#ifdef UI_OUT
+ annotate_field (0);
+ ui_out_table_header (uiout, 3, ui_left, "Num"); /* 1 */
+ annotate_field (1);
+ ui_out_table_header (uiout, 14, ui_left, "Type"); /* 2 */
+ annotate_field (2);
+ ui_out_table_header (uiout, 4, ui_left, "Disp"); /* 3 */
+ annotate_field (3);
+ ui_out_table_header (uiout, 3, ui_left, "Enb"); /* 4 */
if (addressprint)
- printf_filtered ("%s ", local_hex_string_custom ((unsigned long) b->address, "08l"));
-
- last_addr = b->address;
- if (b->source_file)
{
- sym = find_pc_function (b->address);
- if (sym)
- {
- fputs_filtered ("in ", gdb_stdout);
- fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout);
- wrap_here (wrap_indent);
- fputs_filtered (" at ", gdb_stdout);
- }
- fputs_filtered (b->source_file, gdb_stdout);
- printf_filtered (":%d", b->line_number);
+ annotate_field (4);
+ ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */
}
- else
- print_address_symbolic (b->address, gdb_stdout, demangle, " ");
- break;
- }
-
- printf_filtered ("\n");
-
- if (b->frame)
- {
- printf_filtered ("\tstop only in stack frame at ");
- print_address_numeric (b->frame, gdb_stdout);
- printf_filtered ("\n");
- }
- if (b->cond)
- {
- printf_filtered ("\tstop only if ");
- print_expression (b->cond, gdb_stdout);
- printf_filtered ("\n");
+ annotate_field (5);
+ ui_out_table_header (uiout, 40, ui_noalign, "What"); /* 6 */
+ ui_out_table_body (uiout);
+#else
+ annotate_field (0);
+ printf_filtered ("Num ");
+ annotate_field (1);
+ printf_filtered ("Type ");
+ annotate_field (2);
+ printf_filtered ("Disp ");
+ annotate_field (3);
+ printf_filtered ("Enb ");
+ if (addressprint)
+ {
+ annotate_field (4);
+ printf_filtered ("Address ");
+ }
+ annotate_field (5);
+ printf_filtered ("What\n");
+#endif /* UI_OUT */
+ annotate_breakpoints_table ();
}
- if (b->ignore_count)
- printf_filtered ("\tignore next %d hits\n", b->ignore_count);
- if ((l = b->commands))
- while (l)
- {
- fputs_filtered ("\t", gdb_stdout);
- fputs_filtered (l->line, gdb_stdout);
- fputs_filtered ("\n", gdb_stdout);
- l = l->next;
- }
+
+ print_one_breakpoint (b, &last_addr);
}
-
+
if (!found_a_breakpoint)
{
+#ifdef UI_OUT
if (bnum == -1)
- printf_filtered ("No breakpoints or watchpoints.\n");
+ ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n");
else
- printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum);
+ ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n",
+ bnum);
+#else
+ if (bnum == -1)
+ printf_filtered ("No breakpoints or watchpoints.\n");
+ else
+ printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum);
+#endif /* UI_OUT */
}
else
- /* Compare against (CORE_ADDR)-1 in case some compiler decides
- that a comparison of an unsigned with -1 is always false. */
- if (last_addr != (CORE_ADDR)-1)
- set_next_address (last_addr);
+ {
+ /* Compare against (CORE_ADDR)-1 in case some compiler decides
+ that a comparison of an unsigned with -1 is always false. */
+ if (last_addr != (CORE_ADDR) -1)
+ set_next_address (last_addr);
+ }
+
+#ifdef UI_OUT
+ ui_out_table_end (uiout);
+#endif /* UI_OUT */
+ /* FIXME? Should this be moved up so that it is only called when
+ there have been breakpoints? */
+ annotate_breakpoints_table_end ();
}
/* ARGSUSED */
static void
-breakpoints_info (bnum_exp, from_tty)
- char *bnum_exp;
- int from_tty;
+breakpoints_info (char *bnum_exp, int from_tty)
{
int bnum = -1;
breakpoint_1 (bnum, 0);
}
-#if MAINTENANCE_CMDS
-
/* ARGSUSED */
static void
-maintenance_info_breakpoints (bnum_exp, from_tty)
- char *bnum_exp;
- int from_tty;
+maintenance_info_breakpoints (char *bnum_exp, int from_tty)
{
int bnum = -1;
breakpoint_1 (bnum, 1);
}
-#endif
-
/* Print a message describing any breakpoints set at PC. */
static void
-describe_other_breakpoints (pc)
- register CORE_ADDR pc;
+describe_other_breakpoints (CORE_ADDR pc, asection *section)
{
register int others = 0;
register struct breakpoint *b;
ALL_BREAKPOINTS (b)
if (b->address == pc)
+ if (overlay_debugging == 0 ||
+ b->section == section)
others++;
if (others > 0)
{
printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : "");
ALL_BREAKPOINTS (b)
if (b->address == pc)
+ if (overlay_debugging == 0 ||
+ b->section == section)
{
others--;
printf_filtered
("%d%s%s ",
b->number,
- (b->enable == disabled) ? " (disabled)" : "",
+ ((b->enable == disabled ||
+ b->enable == shlib_disabled ||
+ b->enable == call_disabled) ? " (disabled)"
+ : b->enable == permanent ? " (permanent)"
+ : ""),
(others > 1) ? "," : ((others == 1) ? " and" : ""));
}
printf_filtered ("also set at pc ");
- print_address_numeric (pc, gdb_stdout);
+ print_address_numeric (pc, 1, gdb_stdout);
printf_filtered (".\n");
}
}
for the `break' command with no arguments. */
void
-set_default_breakpoint (valid, addr, symtab, line)
- int valid;
- CORE_ADDR addr;
- struct symtab *symtab;
- int line;
+set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab,
+ int line)
{
default_breakpoint_valid = valid;
default_breakpoint_address = addr;
/* Rescan breakpoints at address ADDRESS,
marking the first one as "first" and any others as "duplicates".
- This is so that the bpt instruction is only inserted once. */
+ This is so that the bpt instruction is only inserted once.
+ If we have a permanent breakpoint at ADDRESS, make that one
+ the official one, and the rest as duplicates. */
static void
-check_duplicates (address)
- CORE_ADDR address;
+check_duplicates (CORE_ADDR address, asection *section)
{
register struct breakpoint *b;
register int count = 0;
+ struct breakpoint *perm_bp = 0;
if (address == 0) /* Watchpoints are uninteresting */
return;
ALL_BREAKPOINTS (b)
- if (b->enable != disabled && b->address == address)
- {
- count++;
- b->duplicate = count > 1;
- }
+ if (b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && b->address == address
+ && (overlay_debugging == 0 || b->section == section))
+ {
+ /* Have we found a permanent breakpoint? */
+ if (b->enable == permanent)
+ {
+ perm_bp = b;
+ break;
+ }
+
+ count++;
+ b->duplicate = count > 1;
+ }
+
+ /* If we found a permanent breakpoint at this address, go over the
+ list again and declare all the other breakpoints there to be the
+ duplicates. */
+ if (perm_bp)
+ {
+ perm_bp->duplicate = 0;
+
+ /* Permanent breakpoint should always be inserted. */
+ if (! perm_bp->inserted)
+ internal_error ("allegedly permanent breakpoint is not "
+ "actually inserted");
+
+ ALL_BREAKPOINTS (b)
+ if (b != perm_bp)
+ {
+ if (b->inserted)
+ internal_error ("another breakpoint was inserted on top of "
+ "a permanent breakpoint");
+
+ if (b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && b->address == address
+ && (overlay_debugging == 0 || b->section == section))
+ b->duplicate = 1;
+ }
+ }
}
/* Low level routine to set a breakpoint.
error(); otherwise it leaves a bogus breakpoint on the chain. Validate
your arguments BEFORE calling this routine! */
-static struct breakpoint *
-set_raw_breakpoint (sal)
- struct symtab_and_line sal;
+struct breakpoint *
+set_raw_breakpoint (struct symtab_and_line sal)
{
register struct breakpoint *b, *b1;
else
b->source_file = savestring (sal.symtab->filename,
strlen (sal.symtab->filename));
+ b->section = sal.section;
+ b->language = current_language->la_language;
+ b->input_radix = input_radix;
b->thread = -1;
b->line_number = sal.line;
b->enable = enabled;
b->ignore_count = 0;
b->commands = NULL;
b->frame = 0;
+ b->dll_pathname = NULL;
+ b->triggered_dll_pathname = NULL;
+ b->forked_inferior_pid = 0;
+ b->exec_pathname = NULL;
/* Add this breakpoint to the end of the chain
so that a list of breakpoints will come out in order
b1->next = b;
}
- check_duplicates (sal.pc);
+ check_duplicates (sal.pc, sal.section);
+ breakpoints_changed ();
return b;
}
-static void
-create_longjmp_breakpoint(func_name)
- char *func_name;
-{
+
+/* Note that the breakpoint object B describes a permanent breakpoint
+ instruction, hard-wired into the inferior's code. */
+void
+make_breakpoint_permanent (struct breakpoint *b)
+{
+ b->enable = permanent;
+
+ /* By definition, permanent breakpoints are already present in the code. */
+ b->inserted = 1;
+}
+
+#ifdef GET_LONGJMP_TARGET
+
+static void
+create_longjmp_breakpoint (char *func_name)
+{
struct symtab_and_line sal;
struct breakpoint *b;
- static int internal_breakpoint_number = -1;
+ INIT_SAL (&sal); /* initialize to zeroes */
if (func_name != NULL)
{
struct minimal_symbol *m;
- m = lookup_minimal_symbol(func_name, (struct objfile *)NULL);
+ m = lookup_minimal_symbol_text (func_name, NULL,
+ (struct objfile *) NULL);
if (m)
sal.pc = SYMBOL_VALUE_ADDRESS (m);
else
return;
}
- else
- sal.pc = 0;
-
- sal.symtab = NULL;
- sal.line = 0;
-
- b = set_raw_breakpoint(sal);
- if (!b) return;
+ sal.section = find_pc_overlay (sal.pc);
+ b = set_raw_breakpoint (sal);
+ if (!b)
+ return;
b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume;
b->disposition = donttouch;
b->enable = disabled;
b->silent = 1;
if (func_name)
- b->addr_string = strsave(func_name);
+ b->addr_string = strsave (func_name);
b->number = internal_breakpoint_number--;
}
-/* Call this routine when stepping and nexting to enable a breakpoint if we do
- a longjmp(). When we hit that breakpoint, call
+#endif /* #ifdef GET_LONGJMP_TARGET */
+
+/* Call this routine when stepping and nexting to enable a breakpoint
+ if we do a longjmp(). When we hit that breakpoint, call
set_longjmp_resume_breakpoint() to figure out where we are going. */
void
-enable_longjmp_breakpoint()
+enable_longjmp_breakpoint (void)
{
register struct breakpoint *b;
ALL_BREAKPOINTS (b)
if (b->type == bp_longjmp)
- {
- b->enable = enabled;
- check_duplicates (b->address);
- }
+ {
+ b->enable = enabled;
+ check_duplicates (b->address, b->section);
+ }
}
void
-disable_longjmp_breakpoint()
+disable_longjmp_breakpoint (void)
{
register struct breakpoint *b;
ALL_BREAKPOINTS (b)
- if ( b->type == bp_longjmp
+ if (b->type == bp_longjmp
|| b->type == bp_longjmp_resume)
- {
- b->enable = disabled;
- check_duplicates (b->address);
- }
+ {
+ b->enable = disabled;
+ check_duplicates (b->address, b->section);
+ }
}
-/* Call this after hitting the longjmp() breakpoint. Use this to set a new
- breakpoint at the target of the jmp_buf.
+struct breakpoint *
+create_thread_event_breakpoint (CORE_ADDR address)
+{
+ struct breakpoint *b;
+ struct symtab_and_line sal;
+ char addr_string[80]; /* Surely an addr can't be longer than that. */
+
+ INIT_SAL (&sal); /* initialize to zeroes */
+ sal.pc = address;
+ sal.section = find_pc_overlay (sal.pc);
+ if ((b = set_raw_breakpoint (sal)) == NULL)
+ return NULL;
+
+ b->number = internal_breakpoint_number--;
+ b->disposition = donttouch;
+ b->type = bp_thread_event; /* XXX: do we need a new type?
+ bp_thread_event */
+ b->enable = enabled;
+ /* addr_string has to be used or breakpoint_re_set will delete me. */
+ sprintf (addr_string, "*0x%s", paddr (b->address));
+ b->addr_string = strsave (addr_string);
- FIXME - This ought to be done by setting a temporary breakpoint that gets
- deleted automatically...
-*/
+ return b;
+}
void
-set_longjmp_resume_breakpoint(pc, frame)
- CORE_ADDR pc;
- FRAME frame;
+remove_thread_event_breakpoints (void)
{
- register struct breakpoint *b;
+ struct breakpoint *b, *temp;
- ALL_BREAKPOINTS (b)
- if (b->type == bp_longjmp_resume)
- {
- b->address = pc;
- b->enable = enabled;
- if (frame != NULL)
- b->frame = FRAME_FP(frame);
- else
- b->frame = 0;
- check_duplicates (b->address);
- return;
- }
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ if (b->type == bp_thread_event)
+ delete_breakpoint (b);
}
-/* Set a breakpoint that will evaporate an end of command
- at address specified by SAL.
- Restrict it to frame FRAME if FRAME is nonzero. */
+#ifdef SOLIB_ADD
+void
+remove_solib_event_breakpoints (void)
+{
+ register struct breakpoint *b, *temp;
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ if (b->type == bp_shlib_event)
+ delete_breakpoint (b);
+}
struct breakpoint *
-set_momentary_breakpoint (sal, frame, type)
- struct symtab_and_line sal;
- FRAME frame;
- enum bptype type;
+create_solib_event_breakpoint (CORE_ADDR address)
{
- register struct breakpoint *b;
+ struct breakpoint *b;
+ struct symtab_and_line sal;
+
+ INIT_SAL (&sal); /* initialize to zeroes */
+ sal.pc = address;
+ sal.section = find_pc_overlay (sal.pc);
b = set_raw_breakpoint (sal);
- b->type = type;
- b->enable = enabled;
+ b->number = internal_breakpoint_number--;
b->disposition = donttouch;
- b->frame = (frame ? FRAME_FP (frame) : 0);
+ b->type = bp_shlib_event;
+
return b;
}
-#if 0
+/* Disable any breakpoints that are on code in shared libraries. Only
+ apply to enabled breakpoints, disabled ones can just stay disabled. */
+
void
-clear_momentary_breakpoints ()
+disable_breakpoints_in_shlibs (int silent)
{
- register struct breakpoint *b;
+ struct breakpoint *b;
+ int disabled_shlib_breaks = 0;
+
+ /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
ALL_BREAKPOINTS (b)
- if (b->disposition == delete)
+ {
+#if defined (PC_SOLIB)
+ if (((b->type == bp_breakpoint) ||
+ (b->type == bp_hardware_breakpoint)) &&
+ b->enable == enabled &&
+ !b->duplicate &&
+ PC_SOLIB (b->address))
{
- delete_breakpoint (b);
- break;
+ b->enable = shlib_disabled;
+ if (!silent)
+ {
+ if (!disabled_shlib_breaks)
+ {
+ target_terminal_ours_for_output ();
+ warning ("Temporarily disabling shared library breakpoints:");
+ }
+ disabled_shlib_breaks = 1;
+ warning ("breakpoint #%d ", b->number);
+ }
}
-}
#endif
-\f
-/* Tell the user we have just set a breakpoint B. */
-static void
-mention (b)
- struct breakpoint *b;
-{
- switch (b->type)
- {
- case bp_watchpoint:
- printf_filtered ("Watchpoint %d: ", b->number);
- print_expression (b->exp, gdb_stdout);
- break;
- case bp_breakpoint:
- printf_filtered ("Breakpoint %d at ", b->number);
- print_address_numeric (b->address, gdb_stdout);
- if (b->source_file)
- printf_filtered (": file %s, line %d.",
- b->source_file, b->line_number);
- break;
- case bp_until:
- case bp_finish:
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_step_resume:
- case bp_through_sigtramp:
- case bp_call_dummy:
- break;
- }
- printf_filtered ("\n");
+ }
}
-#if 0
-/* Nobody calls this currently. */
-/* Set a breakpoint from a symtab and line.
- If TEMPFLAG is nonzero, it is a temporary breakpoint.
- ADDR_STRING is a malloc'd string holding the name of where we are
- setting the breakpoint. This is used later to re-set it after the
- program is relinked and symbols are reloaded.
- Print the same confirmation messages that the breakpoint command prints. */
-
+/* Try to reenable any breakpoints in shared libraries. */
void
-set_breakpoint (s, line, tempflag, addr_string)
- struct symtab *s;
- int line;
- int tempflag;
- char *addr_string;
+re_enable_breakpoints_in_shlibs (void)
{
- register struct breakpoint *b;
- struct symtab_and_line sal;
-
- sal.symtab = s;
- sal.line = line;
- sal.pc = 0;
- resolve_sal_pc (&sal); /* Might error out */
- describe_other_breakpoints (sal.pc);
+ struct breakpoint *b;
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->type = bp_breakpoint;
- b->cond = 0;
- b->addr_string = addr_string;
- b->enable = enabled;
- b->disposition = tempflag ? delete : donttouch;
+ ALL_BREAKPOINTS (b)
+ if (b->enable == shlib_disabled)
+ {
+ char buf[1];
- mention (b);
+ /* Do not reenable the breakpoint if the shared library
+ is still not mapped in. */
+ if (target_read_memory (b->address, buf, 1) == 0)
+ b->enable = enabled;
+ }
}
-#endif /* 0 */
-\f
-/* Set a breakpoint according to ARG (function, linenum or *address)
- and make it temporary if TEMPFLAG is nonzero. */
+
+#endif
static void
-break_command_1 (arg, tempflag, from_tty)
- char *arg;
- int tempflag, from_tty;
+solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname,
+ char *cond_string, enum bptype bp_kind)
{
+ struct breakpoint *b;
struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- register struct expression *cond = 0;
- register struct breakpoint *b;
-
- /* Pointers in arg to the start, and one past the end, of the condition. */
- char *cond_start = NULL;
- char *cond_end = NULL;
- /* Pointers in arg to the start, and one past the end,
- of the address part. */
- char *addr_start = NULL;
- char *addr_end = NULL;
struct cleanup *old_chain;
struct cleanup *canonical_strings_chain = NULL;
- char **canonical = (char **)NULL;
- int i;
- int thread;
-
- sals.sals = NULL;
- sals.nelts = 0;
-
- sal.line = sal.pc = sal.end = 0;
- sal.symtab = 0;
+ char *addr_start = hookname;
+ char *addr_end = NULL;
+ char **canonical = (char **) NULL;
+ int thread = -1; /* All threads. */
- /* If no arg given, or if first arg is 'if ', use the default breakpoint. */
+ /* Set a breakpoint on the specified hook. */
+ sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical);
+ addr_end = hookname;
- if (!arg || (arg[0] == 'i' && arg[1] == 'f'
- && (arg[2] == ' ' || arg[2] == '\t')))
+ if (sals.nelts == 0)
{
- if (default_breakpoint_valid)
- {
- sals.sals = (struct symtab_and_line *)
- xmalloc (sizeof (struct symtab_and_line));
- sal.pc = default_breakpoint_address;
- sal.line = default_breakpoint_line;
- sal.symtab = default_breakpoint_symtab;
- sals.sals[0] = sal;
- sals.nelts = 1;
- }
- else
- error ("No default breakpoint address now.");
+ warning ("Unable to set a breakpoint on dynamic linker callback.");
+ warning ("Suggest linking with /opt/langtools/lib/end.o.");
+ warning ("GDB will be unable to track shl_load/shl_unload calls");
+ return;
}
- else
+ if (sals.nelts != 1)
{
- addr_start = arg;
-
- /* 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. */
- if (default_breakpoint_valid
- && (!current_source_symtab
- || (arg && (*arg == '+' || *arg == '-'))))
- sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
- default_breakpoint_line, &canonical);
- else
- sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical);
-
- addr_end = arg;
+ warning ("Unable to set unique breakpoint on dynamic linker callback.");
+ warning ("GDB will be unable to track shl_load/shl_unload calls");
+ return;
}
-
- if (! sals.nelts)
- return;
- /* Make sure that all storage allocated in decode_line_1 gets freed in case
- the following `for' loop errors out. */
+ /* Make sure that all storage allocated in decode_line_1 gets freed
+ in case the following errors out. */
old_chain = make_cleanup (free, sals.sals);
- if (canonical != (char **)NULL)
+ if (canonical != (char **) NULL)
{
make_cleanup (free, canonical);
canonical_strings_chain = make_cleanup (null_cleanup, 0);
- for (i = 0; i < sals.nelts; i++)
- {
- if (canonical[i] != NULL)
- make_cleanup (free, canonical[i]);
- }
+ if (canonical[0] != NULL)
+ make_cleanup (free, canonical[0]);
}
- thread = -1; /* No specific thread yet */
-
- /* Resolve all line numbers to PC's, and verify that conditions
- can be parsed, before setting any breakpoints. */
- for (i = 0; i < sals.nelts; i++)
- {
- char *tok, *end_tok;
- int toklen;
-
- resolve_sal_pc (&sals.sals[i]);
-
- tok = arg;
-
- while (tok && *tok)
- {
- while (*tok == ' ' || *tok == '\t')
- tok++;
-
- end_tok = tok;
-
- while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
- end_tok++;
-
- toklen = end_tok - tok;
-
- if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
- {
- tok = cond_start = end_tok + 1;
- cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
- cond_end = tok;
- }
- else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
- {
- char *tmptok;
-
- tok = end_tok + 1;
- tmptok = tok;
- thread = strtol (tok, &tok, 0);
- if (tok == tmptok)
- error ("Junk after thread keyword.");
- if (!valid_thread_id (thread))
- error ("Unknown thread %d\n", thread);
- }
- else
- error ("Junk at end of arguments.");
- }
- }
+ resolve_sal_pc (&sals.sals[0]);
/* Remove the canonical strings from the cleanup, they are needed below. */
- if (canonical != (char **)NULL)
+ if (canonical != (char **) NULL)
discard_cleanups (canonical_strings_chain);
- /* Now set all the breakpoints. */
- for (i = 0; i < sals.nelts; i++)
- {
- sal = sals.sals[i];
-
- if (from_tty)
- describe_other_breakpoints (sal.pc);
+ b = set_raw_breakpoint (sals.sals[0]);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ?
+ NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->type = bp_breakpoint;
- b->cond = cond;
- b->thread = thread;
-
- /* If a canonical line spec is needed use that instead of the
- command string. */
- if (canonical != (char **)NULL && canonical[i] != NULL)
- b->addr_string = canonical[i];
- else if (addr_start)
- b->addr_string = savestring (addr_start, addr_end - addr_start);
- if (cond_start)
- b->cond_string = savestring (cond_start, cond_end - cond_start);
-
- b->enable = enabled;
- b->disposition = tempflag ? delete : donttouch;
+ if (canonical != (char **) NULL && canonical[0] != NULL)
+ b->addr_string = canonical[0];
+ else if (addr_start)
+ b->addr_string = savestring (addr_start, addr_end - addr_start);
- mention (b);
- }
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
- if (sals.nelts > 1)
+ if (dll_pathname == NULL)
+ b->dll_pathname = NULL;
+ else
{
- printf_filtered ("Multiple breakpoints were set.\n");
- printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
+ b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1);
+ strcpy (b->dll_pathname, dll_pathname);
}
+ b->type = bp_kind;
+
+ mention (b);
do_cleanups (old_chain);
}
-/* Helper function for break_command_1 and disassemble_command. */
-
void
-resolve_sal_pc (sal)
- struct symtab_and_line *sal;
+create_solib_load_event_breakpoint (char *hookname, int tempflag,
+ char *dll_pathname, char *cond_string)
{
- CORE_ADDR pc;
-
- if (sal->pc == 0 && sal->symtab != 0)
- {
- pc = find_line_pc (sal->symtab, sal->line);
- if (pc == 0)
- error ("No line %d in file \"%s\".",
- sal->line, sal->symtab->filename);
- sal->pc = pc;
- }
+ solib_load_unload_1 (hookname, tempflag, dll_pathname,
+ cond_string, bp_catch_load);
}
void
-break_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- break_command_1 (arg, 0, from_tty);
-}
-
-static void
-tbreak_command (arg, from_tty)
- char *arg;
- int from_tty;
+create_solib_unload_event_breakpoint (char *hookname, int tempflag,
+ char *dll_pathname, char *cond_string)
{
- break_command_1 (arg, 1, from_tty);
+ solib_load_unload_1 (hookname,tempflag, dll_pathname,
+ cond_string, bp_catch_unload);
}
-/* ARGSUSED */
static void
-watch_command (arg, from_tty)
- char *arg;
- int from_tty;
+create_fork_vfork_event_catchpoint (int tempflag, char *cond_string,
+ enum bptype bp_kind)
{
- struct breakpoint *b;
struct symtab_and_line sal;
- struct expression *exp;
- struct block *exp_valid_block;
- struct value *val;
+ struct breakpoint *b;
+ int thread = -1; /* All threads. */
+ INIT_SAL (&sal);
sal.pc = 0;
sal.symtab = NULL;
sal.line = 0;
-
- /* Parse arguments. */
- innermost_block = NULL;
- exp = parse_expression (arg);
- exp_valid_block = innermost_block;
- val = evaluate_expression (exp);
- release_value (val);
- if (VALUE_LAZY (val))
- value_fetch_lazy (val);
- /* Now set up the breakpoint. */
b = set_raw_breakpoint (sal);
set_breakpoint_count (breakpoint_count + 1);
b->number = breakpoint_count;
- b->type = bp_watchpoint;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ?
+ NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+ b->addr_string = NULL;
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+ b->forked_inferior_pid = 0;
+
+ b->type = bp_kind;
+
+ mention (b);
+}
+
+void
+create_fork_event_catchpoint (int tempflag, char *cond_string)
+{
+ create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork);
+}
+
+void
+create_vfork_event_catchpoint (int tempflag, char *cond_string)
+{
+ create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork);
+}
+
+void
+create_exec_event_catchpoint (int tempflag, char *cond_string)
+{
+ struct symtab_and_line sal;
+ struct breakpoint *b;
+ int thread = -1; /* All threads. */
+
+ INIT_SAL (&sal);
+ sal.pc = 0;
+ sal.symtab = NULL;
+ sal.line = 0;
+
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ?
+ NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+ b->addr_string = NULL;
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+
+ b->type = bp_catch_exec;
+
+ mention (b);
+}
+
+static int
+hw_breakpoint_used_count (void)
+{
+ register struct breakpoint *b;
+ int i = 0;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->type == bp_hardware_breakpoint && b->enable == enabled)
+ i++;
+ }
+
+ return i;
+}
+
+static int
+hw_watchpoint_used_count (enum bptype type, int *other_type_used)
+{
+ register struct breakpoint *b;
+ int i = 0;
+
+ *other_type_used = 0;
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->enable == enabled)
+ {
+ if (b->type == type)
+ i++;
+ else if ((b->type == bp_hardware_watchpoint ||
+ b->type == bp_read_watchpoint ||
+ b->type == bp_access_watchpoint)
+ && b->enable == enabled)
+ *other_type_used = 1;
+ }
+ }
+ return i;
+}
+
+/* Call this after hitting the longjmp() breakpoint. Use this to set
+ a new breakpoint at the target of the jmp_buf.
+
+ FIXME - This ought to be done by setting a temporary breakpoint
+ that gets deleted automatically... */
+
+void
+set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_info *frame)
+{
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ if (b->type == bp_longjmp_resume)
+ {
+ b->address = pc;
+ b->enable = enabled;
+ if (frame != NULL)
+ b->frame = frame->frame;
+ else
+ b->frame = 0;
+ check_duplicates (b->address, b->section);
+ return;
+ }
+}
+
+void
+disable_watchpoints_before_interactive_call_start (void)
+{
+ struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (((b->type == bp_watchpoint)
+ || (b->type == bp_hardware_watchpoint)
+ || (b->type == bp_read_watchpoint)
+ || (b->type == bp_access_watchpoint)
+ || ep_is_exception_catchpoint (b))
+ && (b->enable == enabled))
+ {
+ b->enable = call_disabled;
+ check_duplicates (b->address, b->section);
+ }
+ }
+}
+
+void
+enable_watchpoints_after_interactive_call_stop (void)
+{
+ struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (((b->type == bp_watchpoint)
+ || (b->type == bp_hardware_watchpoint)
+ || (b->type == bp_read_watchpoint)
+ || (b->type == bp_access_watchpoint)
+ || ep_is_exception_catchpoint (b))
+ && (b->enable == call_disabled))
+ {
+ b->enable = enabled;
+ check_duplicates (b->address, b->section);
+ }
+ }
+}
+
+
+/* Set a breakpoint that will evaporate an end of command
+ at address specified by SAL.
+ Restrict it to frame FRAME if FRAME is nonzero. */
+
+struct breakpoint *
+set_momentary_breakpoint (struct symtab_and_line sal, struct frame_info *frame,
+ enum bptype type)
+{
+ register struct breakpoint *b;
+ b = set_raw_breakpoint (sal);
+ b->type = type;
+ b->enable = enabled;
+ b->disposition = donttouch;
+ b->frame = (frame ? frame->frame : 0);
+
+ /* If we're debugging a multi-threaded program, then we
+ want momentary breakpoints to be active in only a
+ single thread of control. */
+ if (in_thread_list (inferior_pid))
+ b->thread = pid_to_thread_id (inferior_pid);
+
+ return b;
+}
+\f
+
+/* Tell the user we have just set a breakpoint B. */
+
+static void
+mention (struct breakpoint *b)
+{
+ int say_where = 0;
+#ifdef UI_OUT
+ struct cleanup *old_chain;
+ struct ui_stream *stb;
+
+ stb = ui_out_stream_new (uiout);
+ old_chain = make_cleanup_ui_out_stream_delete (stb);
+#endif /* UI_OUT */
+
+ /* FIXME: This is misplaced; mention() is called by things (like hitting a
+ watchpoint) other than breakpoint creation. It should be possible to
+ clean this up and at the same time replace the random calls to
+ breakpoint_changed with this hook, as has already been done for
+ delete_breakpoint_hook and so on. */
+ if (create_breakpoint_hook)
+ create_breakpoint_hook (b);
+ breakpoint_create_event (b->number);
+
+ switch (b->type)
+ {
+ case bp_none:
+ printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number);
+ break;
+#ifdef UI_OUT
+ case bp_watchpoint:
+ ui_out_text (uiout, "Watchpoint ");
+ ui_out_list_begin (uiout, "wpt");
+ ui_out_field_int (uiout, "number", b->number);
+ ui_out_text (uiout, ": ");
+ print_expression (b->exp, stb->stream);
+ ui_out_field_stream (uiout, "exp", stb);
+ ui_out_list_end (uiout);
+ break;
+ case bp_hardware_watchpoint:
+ ui_out_text (uiout, "Hardware watchpoint ");
+ ui_out_list_begin (uiout, "wpt");
+ ui_out_field_int (uiout, "number", b->number);
+ ui_out_text (uiout, ": ");
+ print_expression (b->exp, stb->stream);
+ ui_out_field_stream (uiout, "exp", stb);
+ ui_out_list_end (uiout);
+ break;
+#else
+ case bp_watchpoint:
+ printf_filtered ("Watchpoint %d: ", b->number);
+ print_expression (b->exp, gdb_stdout);
+ break;
+ case bp_hardware_watchpoint:
+ printf_filtered ("Hardware watchpoint %d: ", b->number);
+ print_expression (b->exp, gdb_stdout);
+ break;
+#endif
+#ifdef UI_OUT
+ case bp_read_watchpoint:
+ ui_out_text (uiout, "Hardware read watchpoint ");
+ ui_out_list_begin (uiout, "hw-rwpt");
+ ui_out_field_int (uiout, "number", b->number);
+ ui_out_text (uiout, ": ");
+ print_expression (b->exp, stb->stream);
+ ui_out_field_stream (uiout, "exp", stb);
+ ui_out_list_end (uiout);
+ break;
+ case bp_access_watchpoint:
+ ui_out_text (uiout, "Hardware access (read/write) watchpoint ");
+ ui_out_list_begin (uiout, "hw-awpt");
+ ui_out_field_int (uiout, "number", b->number);
+ ui_out_text (uiout, ": ");
+ print_expression (b->exp, stb->stream);
+ ui_out_field_stream (uiout, "exp", stb);
+ ui_out_list_end (uiout);
+ break;
+#else
+ case bp_read_watchpoint:
+ printf_filtered ("Hardware read watchpoint %d: ", b->number);
+ print_expression (b->exp, gdb_stdout);
+ break;
+ case bp_access_watchpoint:
+ printf_filtered ("Hardware access (read/write) watchpoint %d: ",
+ b->number);
+ print_expression (b->exp, gdb_stdout);
+ break;
+#endif
+ case bp_breakpoint:
+#ifdef UI_OUT
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ {
+ say_where = 0;
+ break;
+ }
+#endif
+ printf_filtered ("Breakpoint %d", b->number);
+ say_where = 1;
+ break;
+ case bp_hardware_breakpoint:
+#ifdef UI_OUT
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ {
+ say_where = 0;
+ break;
+ }
+#endif
+ printf_filtered ("Hardware assisted breakpoint %d", b->number);
+ say_where = 1;
+ break;
+ case bp_catch_load:
+ case bp_catch_unload:
+ printf_filtered ("Catchpoint %d (%s %s)",
+ b->number,
+ (b->type == bp_catch_load) ? "load" : "unload",
+ (b->dll_pathname != NULL) ?
+ b->dll_pathname : "<any library>");
+ break;
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ printf_filtered ("Catchpoint %d (%s)",
+ b->number,
+ (b->type == bp_catch_fork) ? "fork" : "vfork");
+ break;
+ case bp_catch_exec:
+ printf_filtered ("Catchpoint %d (exec)",
+ b->number);
+ break;
+ case bp_catch_catch:
+ case bp_catch_throw:
+ printf_filtered ("Catchpoint %d (%s)",
+ b->number,
+ (b->type == bp_catch_catch) ? "catch" : "throw");
+ break;
+
+ case bp_until:
+ case bp_finish:
+ case bp_longjmp:
+ case bp_longjmp_resume:
+ case bp_step_resume:
+ case bp_through_sigtramp:
+ case bp_call_dummy:
+ case bp_watchpoint_scope:
+ case bp_shlib_event:
+ case bp_thread_event:
+ break;
+ }
+ if (say_where)
+ {
+ if (addressprint || b->source_file == NULL)
+ {
+ printf_filtered (" at ");
+ print_address_numeric (b->address, 1, gdb_stdout);
+ }
+ if (b->source_file)
+ printf_filtered (": file %s, line %d.",
+ b->source_file, b->line_number);
+ TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1));
+ TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos));
+ }
+#ifdef UI_OUT
+ do_cleanups (old_chain);
+#endif
+#ifdef UI_OUT
+ if (interpreter_p && strcmp (interpreter_p, "mi") == 0)
+ return;
+#endif
+ printf_filtered ("\n");
+}
+\f
+
+/* Add SALS.nelts breakpoints to the breakpoint table. For each
+ SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
+ COND[i] and COND_STRING[i] values.
+
+ NOTE: If the function succeeds, the caller is expected to cleanup
+ the arrays ADDR_STRING, COND_STRING, COND 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. */
+
+static void
+create_breakpoints (struct symtabs_and_lines sals, char **addr_string,
+ struct expression **cond, char **cond_string,
+ enum bptype type, enum bpdisp disposition,
+ int thread, int ignore_count, int from_tty)
+{
+ if (type == bp_hardware_breakpoint)
+ {
+ int i = hw_breakpoint_used_count ();
+ int target_resources_ok =
+ TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint,
+ i + sals.nelts, 0);
+ if (target_resources_ok == 0)
+ error ("No hardware breakpoint support in the target.");
+ else if (target_resources_ok < 0)
+ error ("Hardware breakpoints used exceeds limit.");
+ }
+
+ /* Now set all the breakpoints. */
+ {
+ int i;
+ for (i = 0; i < sals.nelts; i++)
+ {
+ struct breakpoint *b;
+ struct symtab_and_line sal = sals.sals[i];
+
+ if (from_tty)
+ describe_other_breakpoints (sal.pc, sal.section);
+
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->type = type;
+ b->cond = cond[i];
+ b->thread = thread;
+ b->addr_string = addr_string[i];
+ b->cond_string = cond_string[i];
+ b->ignore_count = ignore_count;
+ b->enable = enabled;
+ b->disposition = disposition;
+ mention (b);
+ }
+ }
+}
+
+/* Parse ARG 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. */
+
+void
+parse_breakpoint_sals (char **address,
+ struct symtabs_and_lines *sals,
+ char ***addr_string)
+{
+ char *addr_start = *address;
+ *addr_string = NULL;
+ /* If no arg given, or if first arg is 'if ', use the default
+ breakpoint. */
+ if ((*address) == NULL
+ || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2])))
+ {
+ if (default_breakpoint_valid)
+ {
+ struct symtab_and_line sal;
+ INIT_SAL (&sal); /* initialize to zeroes */
+ sals->sals = (struct symtab_and_line *)
+ xmalloc (sizeof (struct symtab_and_line));
+ sal.pc = default_breakpoint_address;
+ sal.line = default_breakpoint_line;
+ sal.symtab = default_breakpoint_symtab;
+ sal.section = find_pc_overlay (sal.pc);
+ sals->sals[0] = sal;
+ sals->nelts = 1;
+ }
+ else
+ error ("No default breakpoint address now.");
+ }
+ 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. */
+ if (default_breakpoint_valid
+ && (!current_source_symtab
+ || (strchr ("+-", (*address)[0]) != NULL)))
+ *sals = decode_line_1 (address, 1, default_breakpoint_symtab,
+ default_breakpoint_line, addr_string);
+ else
+ *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string);
+ }
+ /* 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 **));
+ 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);
+ }
+ }
+}
+
+
+/* Convert each SAL into a real PC. Verify that the PC can be
+ inserted as a breakpoint. If it can't throw an error. */
+
+void
+breakpoint_sals_to_pc (struct symtabs_and_lines *sals,
+ char *address)
+{
+ int i;
+ for (i = 0; i < sals->nelts; i++)
+ {
+ resolve_sal_pc (&sals->sals[i]);
+
+ /* It's possible for the PC to be nonzero, but still an illegal
+ value on some targets.
+
+ For example, on HP-UX if you start gdb, and before running the
+ inferior you try to set a breakpoint on a shared library function
+ "foo" where the inferior doesn't call "foo" directly but does
+ pass its address to another function call, then we do find a
+ minimal symbol for the "foo", but it's address is invalid.
+ (Appears to be an index into a table that the loader sets up
+ when the inferior is run.)
+
+ Give the target a chance to bless sals.sals[i].pc before we
+ try to make a breakpoint for it. */
+ if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc))
+ {
+ if (address == NULL)
+ error ("Cannot break without a running program.");
+ else
+ error ("Cannot break on %s without a running program.",
+ address);
+ }
+ }
+}
+
+/* Set a breakpoint according to ARG (function, linenum or *address)
+ flag: first bit : 0 non-temporary, 1 temporary.
+ second bit : 0 normal breakpoint, 1 hardware breakpoint. */
+
+static void
+break_command_1 (char *arg, int flag, int from_tty)
+{
+ int tempflag, hardwareflag;
+ struct symtabs_and_lines sals;
+ register struct expression **cond = 0;
+ /* Pointers in arg to the start, and one past the end, of the
+ condition. */
+ char **cond_string = (char **) NULL;
+ char *addr_start = arg;
+ char **addr_string;
+ struct cleanup *old_chain;
+ struct cleanup *breakpoint_chain = NULL;
+ int i;
+ int thread = -1;
+ int ignore_count = 0;
+
+ hardwareflag = flag & BP_HARDWAREFLAG;
+ tempflag = flag & BP_TEMPFLAG;
+
+ sals.sals = NULL;
+ sals.nelts = 0;
+ addr_string = NULL;
+ parse_breakpoint_sals (&arg, &sals, &addr_string);
+
+ if (!sals.nelts)
+ return;
+
+ /* Create a chain of things that always need to be cleaned up. */
+ old_chain = make_cleanup (null_cleanup, 0);
+
+ /* Make sure that all storage allocated to SALS gets freed. */
+ make_cleanup (free, sals.sals);
+
+ /* Cleanup the addr_string array but not its contents. */
+ make_cleanup (free, addr_string);
+
+ /* Allocate space for all the cond expressions. */
+ cond = xcalloc (sals.nelts, sizeof (struct expression *));
+ make_cleanup (free, cond);
+
+ /* Allocate space for all the cond strings. */
+ cond_string = xcalloc (sals.nelts, sizeof (char **));
+ make_cleanup (free, cond_string);
+
+ /* ----------------------------- SNIP -----------------------------
+ Anything added to the cleanup chain beyond this point is assumed
+ to be part of a breakpoint. If the breakpoint create succeeds
+ then the memory is not reclaimed. */
+ breakpoint_chain = make_cleanup (null_cleanup, 0);
+
+ /* Mark the contents of the addr_string for cleanup. These go on
+ the breakpoint_chain and only occure if the breakpoint create
+ fails. */
+ for (i = 0; i < sals.nelts; i++)
+ {
+ if (addr_string[i] != NULL)
+ make_cleanup (free, addr_string[i]);
+ }
+
+ /* Resolve all line numbers to PC's and verify that the addresses
+ are ok for the target. */
+ breakpoint_sals_to_pc (&sals, addr_start);
+
+ /* Verify that condition can be parsed, before setting any
+ breakpoints. Allocate a separate condition expression for each
+ breakpoint. */
+ thread = -1; /* No specific thread yet */
+ for (i = 0; i < sals.nelts; i++)
+ {
+ char *tok = arg;
+ while (tok && *tok)
+ {
+ char *end_tok;
+ int toklen;
+ char *cond_start = NULL;
+ char *cond_end = NULL;
+ while (*tok == ' ' || *tok == '\t')
+ tok++;
+
+ end_tok = tok;
+
+ while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
+ end_tok++;
+
+ toklen = end_tok - tok;
+
+ if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
+ {
+ tok = cond_start = end_tok + 1;
+ cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
+ make_cleanup (free, cond[i]);
+ cond_end = tok;
+ cond_string[i] = savestring (cond_start, cond_end - cond_start);
+ make_cleanup (free, cond_string[i]);
+ }
+ else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
+ {
+ char *tmptok;
+
+ tok = end_tok + 1;
+ tmptok = tok;
+ thread = strtol (tok, &tok, 0);
+ if (tok == tmptok)
+ error ("Junk after thread keyword.");
+ if (!valid_thread_id (thread))
+ error ("Unknown thread %d\n", thread);
+ }
+ else
+ error ("Junk at end of arguments.");
+ }
+ }
+
+ create_breakpoints (sals, addr_string, cond, cond_string,
+ hardwareflag ? bp_hardware_breakpoint : bp_breakpoint,
+ tempflag ? del : donttouch,
+ thread, ignore_count, from_tty);
+
+ if (sals.nelts > 1)
+ {
+ warning ("Multiple breakpoints were set.");
+ warning ("Use the \"delete\" command to delete unwanted breakpoints.");
+ }
+ /* That's it. Discard the cleanups for data inserted into the
+ breakpoint. */
+ discard_cleanups (breakpoint_chain);
+ /* But cleanup everything else. */
+ do_cleanups (old_chain);
+}
+
+/* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
+ linenum or *address) with COND and IGNORE_COUNT. */
+
+struct captured_breakpoint_args
+ {
+ char *address;
+ char *condition;
+ int hardwareflag;
+ int tempflag;
+ int thread;
+ int ignore_count;
+ };
+
+static int
+do_captured_breakpoint (void *data)
+{
+ struct captured_breakpoint_args *args = data;
+ struct symtabs_and_lines sals;
+ register struct expression **cond;
+ struct cleanup *old_chain;
+ struct cleanup *breakpoint_chain = NULL;
+ int i;
+ char **addr_string;
+ char **cond_string;
+
+ char *address_end;
+
+ /* Parse the source and lines spec. Delay check that the expression
+ didn't contain trailing garbage until after cleanups are in
+ place. */
+ sals.sals = NULL;
+ sals.nelts = 0;
+ address_end = args->address;
+ addr_string = NULL;
+ parse_breakpoint_sals (&address_end, &sals, &addr_string);
+
+ if (!sals.nelts)
+ return GDB_RC_NONE;
+
+ /* Create a chain of things at always need to be cleaned up. */
+ old_chain = make_cleanup (null_cleanup, 0);
+
+ /* Always have a addr_string array, even if it is empty. */
+ make_cleanup (free, addr_string);
+
+ /* Make sure that all storage allocated to SALS gets freed. */
+ make_cleanup (free, sals.sals);
+
+ /* Allocate space for all the cond expressions. */
+ cond = xcalloc (sals.nelts, sizeof (struct expression *));
+ make_cleanup (free, cond);
+
+ /* Allocate space for all the cond strings. */
+ cond_string = xcalloc (sals.nelts, sizeof (char **));
+ make_cleanup (free, cond_string);
+
+ /* ----------------------------- SNIP -----------------------------
+ Anything added to the cleanup chain beyond this point is assumed
+ to be part of a breakpoint. If the breakpoint create goes
+ through then that memory is not cleaned up. */
+ breakpoint_chain = make_cleanup (null_cleanup, 0);
+
+ /* Mark the contents of the addr_string for cleanup. These go on
+ the breakpoint_chain and only occure if the breakpoint create
+ fails. */
+ for (i = 0; i < sals.nelts; i++)
+ {
+ if (addr_string[i] != NULL)
+ make_cleanup (free, addr_string[i]);
+ }
+
+ /* Wait until now before checking for garbage at the end of the
+ address. That way cleanups can take care of freeing any
+ memory. */
+ if (*address_end != '\0')
+ error ("Garbage %s following breakpoint address", address_end);
+
+ /* Resolve all line numbers to PC's. */
+ breakpoint_sals_to_pc (&sals, args->address);
+
+ /* Verify that conditions can be parsed, before setting any
+ breakpoints. */
+ for (i = 0; i < sals.nelts; i++)
+ {
+ if (args->condition != NULL)
+ {
+ char *tok = args->condition;
+ cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
+ if (*tok != '\0')
+ error ("Garbage %s follows condition", tok);
+ make_cleanup (free, cond[i]);
+ cond_string[i] = xstrdup (args->condition);
+ }
+ }
+
+ create_breakpoints (sals, addr_string, cond, cond_string,
+ args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint,
+ args->tempflag ? del : donttouch,
+ args->thread, args->ignore_count, 0/*from-tty*/);
+
+ /* That's it. Discard the cleanups for data inserted into the
+ breakpoint. */
+ discard_cleanups (breakpoint_chain);
+ /* But cleanup everything else. */
+ do_cleanups (old_chain);
+ return GDB_RC_OK;
+}
+
+enum gdb_rc
+gdb_breakpoint (char *address, char *condition,
+ int hardwareflag, int tempflag,
+ int thread, int ignore_count)
+{
+ struct captured_breakpoint_args args;
+ args.address = address;
+ args.condition = condition;
+ args.hardwareflag = hardwareflag;
+ args.tempflag = tempflag;
+ args.thread = thread;
+ args.ignore_count = ignore_count;
+ return catch_errors (do_captured_breakpoint, &args,
+ NULL, RETURN_MASK_ALL);
+}
+
+
+static void
+break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty)
+{
+ struct frame_info *frame;
+ CORE_ADDR low, high, selected_pc = 0;
+ char *extra_args, *level_arg, *addr_string;
+ int extra_args_len = 0, if_arg = 0;
+
+ if (!arg ||
+ (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
+ {
+
+ if (default_breakpoint_valid)
+ {
+ if (selected_frame)
+ {
+ selected_pc = selected_frame->pc;
+ if (arg)
+ if_arg = 1;
+ }
+ else
+ error ("No selected frame.");
+ }
+ else
+ error ("No default breakpoint address now.");
+ }
+ else
+ {
+ extra_args = strchr (arg, ' ');
+ if (extra_args)
+ {
+ extra_args++;
+ extra_args_len = strlen (extra_args);
+ level_arg = (char *) xmalloc (extra_args - arg);
+ strncpy (level_arg, arg, extra_args - arg - 1);
+ level_arg[extra_args - arg - 1] = '\0';
+ }
+ else
+ {
+ level_arg = (char *) xmalloc (strlen (arg) + 1);
+ strcpy (level_arg, arg);
+ }
+
+ frame = parse_frame_specification (level_arg);
+ if (frame)
+ selected_pc = frame->pc;
+ else
+ selected_pc = 0;
+ }
+ if (if_arg)
+ {
+ extra_args = arg;
+ extra_args_len = strlen (arg);
+ }
+
+ if (selected_pc)
+ {
+ if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high))
+ {
+ addr_string = (char *) xmalloc (26 + extra_args_len);
+ if (extra_args_len)
+ sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args);
+ else
+ sprintf (addr_string, "*0x%s", paddr_nz (high));
+ break_command_1 (addr_string, flag, from_tty);
+ free (addr_string);
+ }
+ else
+ error ("No function contains the specified address");
+ }
+ else
+ error ("Unable to set breakpoint at procedure exit");
+}
+
+
+static void
+break_at_finish_command_1 (char *arg, int flag, int from_tty)
+{
+ char *addr_string, *break_string, *beg_addr_string;
+ CORE_ADDR low, high;
+ struct symtabs_and_lines sals;
+ struct symtab_and_line sal;
+ struct cleanup *old_chain;
+ char *extra_args;
+ int extra_args_len = 0;
+ int i, if_arg = 0;
+
+ if (!arg ||
+ (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
+ {
+ if (default_breakpoint_valid)
+ {
+ if (selected_frame)
+ {
+ addr_string = (char *) xmalloc (15);
+ sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc));
+ if (arg)
+ if_arg = 1;
+ }
+ else
+ error ("No selected frame.");
+ }
+ else
+ error ("No default breakpoint address now.");
+ }
+ else
+ {
+ addr_string = (char *) xmalloc (strlen (arg) + 1);
+ strcpy (addr_string, arg);
+ }
+
+ if (if_arg)
+ {
+ extra_args = arg;
+ extra_args_len = strlen (arg);
+ }
+ else if (arg)
+ {
+ /* get the stuff after the function name or address */
+ extra_args = strchr (arg, ' ');
+ if (extra_args)
+ {
+ extra_args++;
+ extra_args_len = strlen (extra_args);
+ }
+ }
+
+ sals.sals = NULL;
+ sals.nelts = 0;
+
+ beg_addr_string = addr_string;
+ sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0,
+ (char ***) NULL);
+
+ free (beg_addr_string);
+ old_chain = make_cleanup (free, sals.sals);
+ for (i = 0; (i < sals.nelts); i++)
+ {
+ sal = sals.sals[i];
+ if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high))
+ {
+ break_string = (char *) xmalloc (extra_args_len + 26);
+ if (extra_args_len)
+ sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args);
+ else
+ sprintf (break_string, "*0x%s", paddr_nz (high));
+ break_command_1 (break_string, flag, from_tty);
+ free (break_string);
+ }
+ else
+ error ("No function contains the specified address");
+ }
+ if (sals.nelts > 1)
+ {
+ warning ("Multiple breakpoints were set.\n");
+ warning ("Use the \"delete\" command to delete unwanted breakpoints.");
+ }
+ do_cleanups (old_chain);
+}
+
+
+/* Helper function for break_command_1 and disassemble_command. */
+
+void
+resolve_sal_pc (struct symtab_and_line *sal)
+{
+ CORE_ADDR pc;
+
+ if (sal->pc == 0 && sal->symtab != NULL)
+ {
+ if (!find_line_pc (sal->symtab, sal->line, &pc))
+ error ("No line %d in file \"%s\".",
+ sal->line, sal->symtab->filename);
+ sal->pc = pc;
+ }
+
+ if (sal->section == 0 && sal->symtab != NULL)
+ {
+ struct blockvector *bv;
+ struct block *b;
+ struct symbol *sym;
+ int index;
+
+ bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab);
+ if (bv != NULL)
+ {
+ b = BLOCKVECTOR_BLOCK (bv, index);
+ sym = block_function (b);
+ if (sym != NULL)
+ {
+ fixup_symbol_section (sym, sal->symtab->objfile);
+ sal->section = SYMBOL_BFD_SECTION (sym);
+ }
+ else
+ {
+ /* It really is worthwhile to have the section, so we'll just
+ have to look harder. This case can be executed if we have
+ line numbers but no functions (as can happen in assembly
+ source). */
+
+ struct minimal_symbol *msym;
+
+ msym = lookup_minimal_symbol_by_pc (sal->pc);
+ if (msym)
+ sal->section = SYMBOL_BFD_SECTION (msym);
+ }
+ }
+ }
+}
+
+void
+break_command (char *arg, int from_tty)
+{
+ break_command_1 (arg, 0, from_tty);
+}
+
+static void
+break_at_finish_command (char *arg, int from_tty)
+{
+ break_at_finish_command_1 (arg, 0, from_tty);
+}
+
+static void
+break_at_finish_at_depth_command (char *arg, int from_tty)
+{
+ break_at_finish_at_depth_command_1 (arg, 0, from_tty);
+}
+
+void
+tbreak_command (char *arg, int from_tty)
+{
+ break_command_1 (arg, BP_TEMPFLAG, from_tty);
+}
+
+static void
+tbreak_at_finish_command (char *arg, int from_tty)
+{
+ break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty);
+}
+
+static void
+hbreak_command (char *arg, int from_tty)
+{
+ break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
+}
+
+static void
+thbreak_command (char *arg, int from_tty)
+{
+ break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
+}
+
+static void
+stop_command (char *arg, int from_tty)
+{
+ printf_filtered ("Specify the type of breakpoint to set.\n\
+Usage: stop in <function | address>\n\
+ stop at <line>\n");
+}
+
+static void
+stopin_command (char *arg, int from_tty)
+{
+ int badInput = 0;
+
+ if (arg == (char *) NULL)
+ badInput = 1;
+ else if (*arg != '*')
+ {
+ char *argptr = arg;
+ int hasColon = 0;
+
+ /* look for a ':'. If this is a line number specification, then
+ say it is bad, otherwise, it should be an address or
+ function/method name */
+ while (*argptr && !hasColon)
+ {
+ hasColon = (*argptr == ':');
+ argptr++;
+ }
+
+ if (hasColon)
+ badInput = (*argptr != ':'); /* Not a class::method */
+ else
+ badInput = isdigit (*arg); /* a simple line number */
+ }
+
+ if (badInput)
+ printf_filtered ("Usage: stop in <function | address>\n");
+ else
+ break_command_1 (arg, 0, from_tty);
+}
+
+static void
+stopat_command (char *arg, int from_tty)
+{
+ int badInput = 0;
+
+ if (arg == (char *) NULL || *arg == '*') /* no line number */
+ badInput = 1;
+ else
+ {
+ char *argptr = arg;
+ int hasColon = 0;
+
+ /* look for a ':'. If there is a '::' then get out, otherwise
+ it is probably a line number. */
+ while (*argptr && !hasColon)
+ {
+ hasColon = (*argptr == ':');
+ argptr++;
+ }
+
+ if (hasColon)
+ badInput = (*argptr == ':'); /* we have class::method */
+ else
+ badInput = !isdigit (*arg); /* not a line number */
+ }
+
+ if (badInput)
+ printf_filtered ("Usage: stop at <line>\n");
+ else
+ break_command_1 (arg, 0, from_tty);
+}
+
+/* ARGSUSED */
+/* accessflag: hw_write: watch write,
+ hw_read: watch read,
+ hw_access: watch access (read or write) */
+static void
+watch_command_1 (char *arg, int accessflag, int from_tty)
+{
+ struct breakpoint *b;
+ struct symtab_and_line sal;
+ struct expression *exp;
+ struct block *exp_valid_block;
+ struct value *val, *mark;
+ struct frame_info *frame;
+ struct frame_info *prev_frame = NULL;
+ char *exp_start = NULL;
+ char *exp_end = NULL;
+ char *tok, *end_tok;
+ int toklen;
+ char *cond_start = NULL;
+ char *cond_end = NULL;
+ struct expression *cond = NULL;
+ int i, other_type_used, target_resources_ok = 0;
+ enum bptype bp_type;
+ int mem_cnt = 0;
+
+ INIT_SAL (&sal); /* initialize to zeroes */
+
+ /* Parse arguments. */
+ innermost_block = NULL;
+ exp_start = arg;
+ exp = parse_exp_1 (&arg, 0, 0);
+ exp_end = arg;
+ exp_valid_block = innermost_block;
+ mark = value_mark ();
+ val = evaluate_expression (exp);
+ release_value (val);
+ if (VALUE_LAZY (val))
+ value_fetch_lazy (val);
+
+ tok = arg;
+ while (*tok == ' ' || *tok == '\t')
+ tok++;
+ end_tok = tok;
+
+ while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
+ end_tok++;
+
+ toklen = end_tok - tok;
+ if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
+ {
+ tok = cond_start = end_tok + 1;
+ cond = parse_exp_1 (&tok, 0, 0);
+ cond_end = tok;
+ }
+ if (*tok)
+ error ("Junk at end of command.");
+
+ if (accessflag == hw_read)
+ bp_type = bp_read_watchpoint;
+ else if (accessflag == hw_access)
+ bp_type = bp_access_watchpoint;
+ else
+ bp_type = bp_hardware_watchpoint;
+
+ mem_cnt = can_use_hardware_watchpoint (val);
+ if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint)
+ error ("Expression cannot be implemented with read/access watchpoint.");
+ if (mem_cnt != 0)
+ {
+ i = hw_watchpoint_used_count (bp_type, &other_type_used);
+ target_resources_ok =
+ TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt,
+ other_type_used);
+ if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint)
+ error ("Target does not support this type of hardware watchpoint.");
+
+ if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint)
+ error ("Target can only support one kind of HW watchpoint at a time.");
+ }
+
+#if defined(HPUXHPPA)
+ /* On HP-UX if you set a h/w
+ watchpoint before the "run" command, the inferior dies with a e.g.,
+ SIGILL once you start it. I initially believed this was due to a
+ bad interaction between page protection traps and the initial
+ startup sequence by the dynamic linker.
+
+ However, I tried avoiding that by having HP-UX's implementation of
+ TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid
+ yet, which forced slow watches before a "run" or "attach", and it
+ still fails somewhere in the startup code.
+
+ Until I figure out what's happening, I'm disallowing watches altogether
+ before the "run" or "attach" command. We'll tell the user they must
+ set watches after getting the program started. */
+ if (!target_has_execution)
+ {
+ warning ("can't do that without a running program; try \"break main\", \"run\" first");
+ return;
+ }
+#endif /* HPUXHPPA */
+
+ /* Now set up the breakpoint. */
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
b->disposition = donttouch;
b->exp = exp;
b->exp_valid_block = exp_valid_block;
+ b->exp_string = savestring (exp_start, exp_end - exp_start);
b->val = val;
- b->cond = 0;
- b->cond_string = NULL;
- b->exp_string = savestring (arg, strlen (arg));
+ b->cond = cond;
+ if (cond_start)
+ b->cond_string = savestring (cond_start, cond_end - cond_start);
+ else
+ b->cond_string = 0;
+
+ frame = block_innermost_frame (exp_valid_block);
+ if (frame)
+ {
+ prev_frame = get_prev_frame (frame);
+ b->watchpoint_frame = frame->frame;
+ }
+ else
+ b->watchpoint_frame = (CORE_ADDR) 0;
+
+ if (mem_cnt && target_resources_ok > 0)
+ b->type = bp_type;
+ else
+ b->type = bp_watchpoint;
+
+ /* If the expression is "local", then set up a "watchpoint scope"
+ breakpoint at the point where we've left the scope of the watchpoint
+ expression. */
+ if (innermost_block)
+ {
+ if (prev_frame)
+ {
+ struct breakpoint *scope_breakpoint;
+ struct symtab_and_line scope_sal;
+
+ INIT_SAL (&scope_sal); /* initialize to zeroes */
+ scope_sal.pc = get_frame_pc (prev_frame);
+ scope_sal.section = find_pc_overlay (scope_sal.pc);
+
+ scope_breakpoint = set_raw_breakpoint (scope_sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ scope_breakpoint->number = breakpoint_count;
+
+ scope_breakpoint->type = bp_watchpoint_scope;
+ scope_breakpoint->enable = enabled;
+
+ /* Automatically delete the breakpoint when it hits. */
+ scope_breakpoint->disposition = del;
+
+ /* Only break in the proper frame (help with recursion). */
+ scope_breakpoint->frame = prev_frame->frame;
+
+ /* Set the address at which we will stop. */
+ scope_breakpoint->address = get_frame_pc (prev_frame);
+
+ /* The scope breakpoint is related to the watchpoint. We
+ will need to act on them together. */
+ b->related_breakpoint = scope_breakpoint;
+ }
+ }
+ value_free_to_mark (mark);
mention (b);
}
+
+/* Return count of locations need to be watched and can be handled
+ in hardware. If the watchpoint can not be handled
+ in hardware return zero. */
+
+#if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
+#define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \
+ ((BYTE_SIZE) <= (REGISTER_SIZE))
+#endif
+
+#if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT)
+#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \
+ TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)
+#endif
+
+static int
+can_use_hardware_watchpoint (struct value *v)
+{
+ int found_memory_cnt = 0;
+ struct value *head = v;
+
+ /* 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 = v->next)
+ {
+ if (VALUE_LVAL (v) == lval_memory)
+ {
+ if (VALUE_LAZY (v))
+ /* A lazy memory lvalue 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'). */
+ ;
+ 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) + VALUE_OFFSET (v);
+ int len = TYPE_LENGTH (VALUE_TYPE (v));
+
+ if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len))
+ return 0;
+ else
+ found_memory_cnt++;
+ }
+ }
+ }
+ else if (v->lval != not_lval && v->modifiable == 0)
+ return 0; /* ??? What does this represent? */
+ else if (v->lval == lval_register)
+ return 0; /* cannot watch a register with a HW watchpoint */
+ }
+
+ /* The expression itself looks suitable for using a hardware
+ watchpoint, but give the target machine a chance to reject it. */
+ return found_memory_cnt;
+}
+
+#ifdef UI_OUT
+void
+watch_command_wrapper (char *arg, int from_tty)
+{
+ watch_command (arg, from_tty);
+}
+#endif
+static void
+watch_command (char *arg, int from_tty)
+{
+ watch_command_1 (arg, hw_write, from_tty);
+}
+
+#ifdef UI_OUT
+void
+rwatch_command_wrapper (char *arg, int from_tty)
+{
+ rwatch_command (arg, from_tty);
+}
+#endif
+static void
+rwatch_command (char *arg, int from_tty)
+{
+ watch_command_1 (arg, hw_read, from_tty);
+}
+
+#ifdef UI_OUT
+void
+awatch_command_wrapper (char *arg, int from_tty)
+{
+ awatch_command (arg, from_tty);
+}
+#endif
+static void
+awatch_command (char *arg, int from_tty)
+{
+ watch_command_1 (arg, hw_access, from_tty);
+}
\f
-/*
- * Helper routine for the until_command routine in infcmd.c. Here
- * because it uses the mechanisms of breakpoints.
- */
+
+/* Helper routines for the until_command routine in infcmd.c. Here
+ because it uses the mechanisms of breakpoints. */
+
+/* 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
+until_break_command_continuation (struct continuation_arg *arg)
+{
+ struct cleanup *cleanups;
+
+ cleanups = (struct cleanup *) arg->data.pointer;
+ do_exec_cleanups (cleanups);
+}
+
/* ARGSUSED */
void
-until_break_command (arg, from_tty)
- char *arg;
- int from_tty;
+until_break_command (char *arg, int from_tty)
{
struct symtabs_and_lines sals;
struct symtab_and_line sal;
- FRAME prev_frame = get_prev_frame (selected_frame);
+ struct frame_info *prev_frame = get_prev_frame (selected_frame);
struct breakpoint *breakpoint;
struct cleanup *old_chain;
+ struct continuation_arg *arg1;
+
clear_proceed_status ();
/* Set a breakpoint where the user wants it and at return from
this function */
-
+
if (default_breakpoint_valid)
sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
- default_breakpoint_line, (char ***)NULL);
+ default_breakpoint_line, (char ***) NULL);
else
- sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL);
-
+ sals = decode_line_1 (&arg, 1, (struct symtab *) NULL,
+ 0, (char ***) NULL);
+
if (sals.nelts != 1)
error ("Couldn't get information on specified line.");
-
+
sal = sals.sals[0];
- free ((PTR)sals.sals); /* malloc'd, so freed */
-
+ free ((PTR) sals.sals); /* malloc'd, so freed */
+
if (*arg)
error ("Junk at end of arguments.");
-
+
resolve_sal_pc (&sal);
-
+
breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until);
-
- old_chain = make_cleanup(delete_breakpoint, breakpoint);
+
+ if (!event_loop_p || !target_can_async_p ())
+ old_chain = make_cleanup_delete_breakpoint (breakpoint);
+ else
+ old_chain = make_exec_cleanup_delete_breakpoint (breakpoint);
+
+ /* If we are running asynchronously, and the target supports async
+ execution, we are not waiting for the target to stop, in the call
+ tp proceed, below. This means that we cannot delete the
+ brekpoints until the target has actually stopped. The only place
+ where we get a chance to do that is in fetch_inferior_event, so
+ we must set things up for that. */
+
+ if (event_loop_p && target_can_async_p ())
+ {
+ /* In this case the arg for the continuation is just the point
+ in the exec_cleanups chain from where to start doing
+ cleanups, because all the continuation does is the cleanups in
+ the exec_cleanup_chain. */
+ arg1 =
+ (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
+ arg1->next = NULL;
+ arg1->data.pointer = old_chain;
+
+ add_continuation (until_break_command_continuation, arg1);
+ }
/* Keep within the current frame */
-
+
if (prev_frame)
{
- struct frame_info *fi;
-
- fi = get_frame_info (prev_frame);
- sal = find_pc_line (fi->pc, 0);
- sal.pc = fi->pc;
+ sal = find_pc_line (prev_frame->pc, 0);
+ sal.pc = prev_frame->pc;
breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until);
- make_cleanup(delete_breakpoint, breakpoint);
+ if (!event_loop_p || !target_can_async_p ())
+ make_cleanup_delete_breakpoint (breakpoint);
+ else
+ make_exec_cleanup_delete_breakpoint (breakpoint);
}
-
+
proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
- do_cleanups(old_chain);
+ /* Do the cleanups now, anly if we are not running asynchronously,
+ of if we are, but the target is still synchronous. */
+ if (!event_loop_p || !target_can_async_p ())
+ do_cleanups (old_chain);
}
\f
#if 0
/* These aren't used; I don't konw what they were for. */
/* Set a breakpoint at the catch clause for NAME. */
static int
-catch_breakpoint (name)
- char *name;
+catch_breakpoint (char *name)
{
}
static int
-disable_catch_breakpoint ()
+disable_catch_breakpoint (void)
{
}
static int
-delete_catch_breakpoint ()
+delete_catch_breakpoint (void)
{
}
static int
-enable_catch_breakpoint ()
+enable_catch_breakpoint (void)
{
}
#endif /* 0 */
};
#if 0
+/* Not really used -- invocation in handle_gnu_4_16_catch_command
+ had been commented out in the v.4.16 sources, and stays
+ disabled there now because "catch NAME" syntax isn't allowed.
+ pai/1997-07-11 */
/* This isn't used; I don't know what it was for. */
/* For each catch clause identified in ARGS, run FUNCTION
with that clause as an argument. */
static struct symtabs_and_lines
map_catch_names (args, function)
char *args;
- int (*function)();
+ int (*function) ();
{
register char *p = args;
register char *p1;
#if 0
if (function (p))
{
- struct sal_chain *next
- = (struct sal_chain *)alloca (sizeof (struct sal_chain));
+ struct sal_chain *next = (struct sal_chain *)
+ alloca (sizeof (struct sal_chain));
next->next = sal_chain;
next->sal = get_catch_sal (p);
sal_chain = next;
win:
#endif
p = p1;
- while (*p == ' ' || *p == '\t') p++;
+ while (*p == ' ' || *p == '\t')
+ p++;
}
}
-#endif /* 0 */
+#endif
+
+/* This shares a lot of code with `print_frame_label_vars' from stack.c. */
+
+static struct symtabs_and_lines
+get_catch_sals (int this_level_only)
+{
+ register struct blockvector *bl;
+ register struct block *block;
+ int index, have_default = 0;
+ CORE_ADDR pc;
+ struct symtabs_and_lines sals;
+ struct sal_chain *sal_chain = 0;
+ char *blocks_searched;
+
+ /* Not sure whether an error message is always the correct response,
+ but it's better than a core dump. */
+ if (selected_frame == NULL)
+ error ("No selected frame.");
+ block = get_frame_block (selected_frame);
+ pc = selected_frame->pc;
+
+ sals.nelts = 0;
+ sals.sals = NULL;
+
+ if (block == 0)
+ error ("No symbol table info available.\n");
+
+ bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
+ blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
+ memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
+
+ while (block != 0)
+ {
+ CORE_ADDR end = BLOCK_END (block) - 4;
+ int last_index;
+
+ if (bl != blockvector_for_pc (end, &index))
+ error ("blockvector blotch");
+ if (BLOCKVECTOR_BLOCK (bl, index) != block)
+ error ("blockvector botch");
+ last_index = BLOCKVECTOR_NBLOCKS (bl);
+ index += 1;
+
+ /* Don't print out blocks that have gone by. */
+ while (index < last_index
+ && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
+ index++;
+
+ while (index < last_index
+ && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
+ {
+ if (blocks_searched[index] == 0)
+ {
+ struct block *b = BLOCKVECTOR_BLOCK (bl, index);
+ int nsyms;
+ register int i;
+ register struct symbol *sym;
+
+ nsyms = BLOCK_NSYMS (b);
+
+ for (i = 0; i < nsyms; i++)
+ {
+ sym = BLOCK_SYM (b, i);
+ if (STREQ (SYMBOL_NAME (sym), "default"))
+ {
+ if (have_default)
+ continue;
+ have_default = 1;
+ }
+ if (SYMBOL_CLASS (sym) == LOC_LABEL)
+ {
+ struct sal_chain *next = (struct sal_chain *)
+ alloca (sizeof (struct sal_chain));
+ next->next = sal_chain;
+ next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym),
+ 0);
+ sal_chain = next;
+ }
+ }
+ blocks_searched[index] = 1;
+ }
+ index++;
+ }
+ if (have_default)
+ break;
+ if (sal_chain && this_level_only)
+ break;
+
+ /* After handling the function's top-level block, stop.
+ Don't continue to its superblock, the block of
+ per-file symbols. */
+ if (BLOCK_FUNCTION (block))
+ break;
+ block = BLOCK_SUPERBLOCK (block);
+ }
+
+ if (sal_chain)
+ {
+ struct sal_chain *tmp_chain;
+
+ /* Count the number of entries. */
+ for (index = 0, tmp_chain = sal_chain; tmp_chain;
+ tmp_chain = tmp_chain->next)
+ index++;
+
+ sals.nelts = index;
+ sals.sals = (struct symtab_and_line *)
+ xmalloc (index * sizeof (struct symtab_and_line));
+ for (index = 0; sal_chain; sal_chain = sal_chain->next, index++)
+ sals.sals[index] = sal_chain->sal;
+ }
+
+ return sals;
+}
+
+static void
+ep_skip_leading_whitespace (char **s)
+{
+ if ((s == NULL) || (*s == NULL))
+ return;
+ while (isspace (**s))
+ *s += 1;
+}
+
+/* This function examines a string, and attempts to find a token
+ that might be an event name in the leading characters. If a
+ possible match is found, a pointer to the last character of
+ the token is returned. Else, NULL is returned. */
+
+static char *
+ep_find_event_name_end (char *arg)
+{
+ char *s = arg;
+ char *event_name_end = NULL;
+
+ /* If we could depend upon the presense of strrpbrk, we'd use that... */
+ if (arg == NULL)
+ return NULL;
+
+ /* We break out of the loop when we find a token delimiter.
+ Basically, we're looking for alphanumerics and underscores;
+ anything else delimites the token. */
+ while (*s != '\0')
+ {
+ if (!isalnum (*s) && (*s != '_'))
+ break;
+ event_name_end = s;
+ s++;
+ }
+
+ return event_name_end;
+}
+
+
+/* This function attempts to parse an optional "if <cond>" clause
+ from the arg string. If one is not found, it returns NULL.
+
+ Else, it returns a pointer to the condition string. (It does not
+ attempt to evaluate the string against a particular block.) And,
+ it updates arg to point to the first character following the parsed
+ if clause in the arg string. */
+
+static char *
+ep_parse_optional_if_clause (char **arg)
+{
+ char *cond_string;
+
+ if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2]))
+ return NULL;
+
+ /* Skip the "if" keyword. */
+ (*arg) += 2;
+
+ /* Skip any extra leading whitespace, and record the start of the
+ condition string. */
+ ep_skip_leading_whitespace (arg);
+ cond_string = *arg;
+
+ /* Assume that the condition occupies the remainder of the arg string. */
+ (*arg) += strlen (cond_string);
+
+ return cond_string;
+}
+
+/* This function attempts to parse an optional filename from the arg
+ string. If one is not found, it returns NULL.
+
+ Else, it returns a pointer to the parsed filename. (This function
+ makes no attempt to verify that a file of that name exists, or is
+ accessible.) And, it updates arg to point to the first character
+ following the parsed filename in the arg string.
+
+ Note that clients needing to preserve the returned filename for
+ future access should copy it to their own buffers. */
+static char *
+ep_parse_optional_filename (char **arg)
+{
+ static char filename[1024];
+ char *arg_p = *arg;
+ int i;
+ char c;
+
+ if ((*arg_p == '\0') || isspace (*arg_p))
+ return NULL;
+
+ for (i = 0;; i++)
+ {
+ c = *arg_p;
+ if (isspace (c))
+ c = '\0';
+ filename[i] = c;
+ if (c == '\0')
+ break;
+ arg_p++;
+ }
+ *arg = arg_p;
+
+ return filename;
+}
+
+/* Commands to deal with catching events, such as signals, exceptions,
+ process start/exit, etc. */
+
+typedef enum
+{
+ catch_fork, catch_vfork
+}
+catch_fork_kind;
+
+#if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT)
+static void catch_fork_command_1 (catch_fork_kind fork_kind,
+ char *arg, int tempflag, int from_tty);
+
+static void
+catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag,
+ int from_tty)
+{
+ char *cond_string = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ /* The allowed syntax is:
+ catch [v]fork
+ catch [v]fork if <cond>
+
+ First, check if there's an if clause. */
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ /* If this target supports it, create a fork or vfork catchpoint
+ and enable reporting of such events. */
+ switch (fork_kind)
+ {
+ case catch_fork:
+ create_fork_event_catchpoint (tempflag, cond_string);
+ break;
+ case catch_vfork:
+ create_vfork_event_catchpoint (tempflag, cond_string);
+ break;
+ default:
+ error ("unsupported or unknown fork kind; cannot catch it");
+ break;
+ }
+}
+#endif
+
+#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
+static void
+catch_exec_command_1 (char *arg, int tempflag, int from_tty)
+{
+ char *cond_string = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ /* The allowed syntax is:
+ catch exec
+ catch exec if <cond>
+
+ First, check if there's an if clause. */
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ /* If this target supports it, create an exec catchpoint
+ and enable reporting of such events. */
+ create_exec_event_catchpoint (tempflag, cond_string);
+}
+#endif
+
+#if defined(SOLIB_ADD)
+static void
+catch_load_command_1 (char *arg, int tempflag, int from_tty)
+{
+ char *dll_pathname = NULL;
+ char *cond_string = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ /* The allowed syntax is:
+ catch load
+ catch load if <cond>
+ catch load <filename>
+ catch load <filename> if <cond>
+
+ The user is not allowed to specify the <filename> after an
+ if clause.
+
+ We'll ignore the pathological case of a file named "if".
+
+ First, check if there's an if clause. If so, then there
+ cannot be a filename. */
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ /* If there was an if clause, then there cannot be a filename.
+ Else, there might be a filename and an if clause. */
+ if (cond_string == NULL)
+ {
+ dll_pathname = ep_parse_optional_filename (&arg);
+ ep_skip_leading_whitespace (&arg);
+ cond_string = ep_parse_optional_if_clause (&arg);
+ }
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ /* Create a load breakpoint that only triggers when a load of
+ the specified dll (or any dll, if no pathname was specified)
+ occurs. */
+ SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag,
+ dll_pathname, cond_string);
+}
+
+static void
+catch_unload_command_1 (char *arg, int tempflag, int from_tty)
+{
+ char *dll_pathname = NULL;
+ char *cond_string = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ /* The allowed syntax is:
+ catch unload
+ catch unload if <cond>
+ catch unload <filename>
+ catch unload <filename> if <cond>
+
+ The user is not allowed to specify the <filename> after an
+ if clause.
+
+ We'll ignore the pathological case of a file named "if".
+
+ First, check if there's an if clause. If so, then there
+ cannot be a filename. */
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ /* If there was an if clause, then there cannot be a filename.
+ Else, there might be a filename and an if clause. */
+ if (cond_string == NULL)
+ {
+ dll_pathname = ep_parse_optional_filename (&arg);
+ ep_skip_leading_whitespace (&arg);
+ cond_string = ep_parse_optional_if_clause (&arg);
+ }
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ /* Create an unload breakpoint that only triggers when an unload of
+ the specified dll (or any dll, if no pathname was specified)
+ occurs. */
+ SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag,
+ dll_pathname, cond_string);
+}
+#endif /* SOLIB_ADD */
+
+/* Commands to deal with catching exceptions. */
-/* This shares a lot of code with `print_frame_label_vars' from stack.c. */
+/* Set a breakpoint at the specified callback routine for an
+ exception event callback */
-static struct symtabs_and_lines
-get_catch_sals (this_level_only)
- int this_level_only;
+static void
+create_exception_catchpoint (int tempflag, char *cond_string,
+ enum exception_event_kind ex_event,
+ struct symtab_and_line *sal)
{
- register struct blockvector *bl;
- register struct block *block;
- int index, have_default = 0;
- struct frame_info *fi;
- CORE_ADDR pc;
- struct symtabs_and_lines sals;
- struct sal_chain *sal_chain = 0;
- char *blocks_searched;
+ struct breakpoint *b;
+ int thread = -1; /* All threads. */
- /* Not sure whether an error message is always the correct response,
- but it's better than a core dump. */
- if (selected_frame == NULL)
- error ("No selected frame.");
- block = get_frame_block (selected_frame);
- fi = get_frame_info (selected_frame);
- pc = fi->pc;
+ if (!sal) /* no exception support? */
+ return;
- sals.nelts = 0;
- sals.sals = NULL;
+ b = set_raw_breakpoint (*sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ?
+ NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+ b->addr_string = NULL;
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+ switch (ex_event)
+ {
+ case EX_EVENT_THROW:
+ b->type = bp_catch_throw;
+ break;
+ case EX_EVENT_CATCH:
+ b->type = bp_catch_catch;
+ break;
+ default: /* error condition */
+ b->type = bp_none;
+ b->enable = disabled;
+ error ("Internal error -- invalid catchpoint kind");
+ }
+ mention (b);
+}
- if (block == 0)
- error ("No symbol table info available.\n");
+/* Deal with "catch catch" and "catch throw" commands */
- bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
- blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
- memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
+static void
+catch_exception_command_1 (enum exception_event_kind ex_event, char *arg,
+ int tempflag, int from_tty)
+{
+ char *cond_string = NULL;
+ struct symtab_and_line *sal = NULL;
- while (block != 0)
- {
- CORE_ADDR end = BLOCK_END (block) - 4;
- int last_index;
+ ep_skip_leading_whitespace (&arg);
- if (bl != blockvector_for_pc (end, &index))
- error ("blockvector blotch");
- if (BLOCKVECTOR_BLOCK (bl, index) != block)
- error ("blockvector botch");
- last_index = BLOCKVECTOR_NBLOCKS (bl);
- index += 1;
+ cond_string = ep_parse_optional_if_clause (&arg);
- /* Don't print out blocks that have gone by. */
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
- index++;
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
- {
- if (blocks_searched[index] == 0)
- {
- struct block *b = BLOCKVECTOR_BLOCK (bl, index);
- int nsyms;
- register int i;
- register struct symbol *sym;
+ if ((ex_event != EX_EVENT_THROW) &&
+ (ex_event != EX_EVENT_CATCH))
+ error ("Unsupported or unknown exception event; cannot catch it");
- nsyms = BLOCK_NSYMS (b);
+ /* See if we can find a callback routine */
+ sal = target_enable_exception_callback (ex_event, 1);
- for (i = 0; i < nsyms; i++)
- {
- sym = BLOCK_SYM (b, i);
- if (STREQ (SYMBOL_NAME (sym), "default"))
- {
- if (have_default)
- continue;
- have_default = 1;
- }
- if (SYMBOL_CLASS (sym) == LOC_LABEL)
- {
- struct sal_chain *next = (struct sal_chain *)
- alloca (sizeof (struct sal_chain));
- next->next = sal_chain;
- next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
- sal_chain = next;
- }
- }
- blocks_searched[index] = 1;
- }
- index++;
+ if (sal)
+ {
+ /* We have callbacks from the runtime system for exceptions.
+ Set a breakpoint on the sal found, if no errors */
+ if (sal != (struct symtab_and_line *) -1)
+ create_exception_catchpoint (tempflag, cond_string, ex_event, sal);
+ else
+ return; /* something went wrong with setting up callbacks */
+ }
+ else
+ {
+ /* No callbacks from runtime system for exceptions.
+ Try GNU C++ exception breakpoints using labels in debug info. */
+ if (ex_event == EX_EVENT_CATCH)
+ {
+ handle_gnu_4_16_catch_command (arg, tempflag, from_tty);
}
- if (have_default)
- break;
- if (sal_chain && this_level_only)
- break;
+ else if (ex_event == EX_EVENT_THROW)
+ {
+ /* Set a breakpoint on __raise_exception () */
- /* After handling the function's top-level block, stop.
- Don't continue to its superblock, the block of
- per-file symbols. */
- if (BLOCK_FUNCTION (block))
- break;
- block = BLOCK_SUPERBLOCK (block);
+ warning ("Unsupported with this platform/compiler combination.");
+ warning ("Perhaps you can achieve the effect you want by setting");
+ warning ("a breakpoint on __raise_exception().");
+ }
}
+}
- if (sal_chain)
- {
- struct sal_chain *tmp_chain;
+/* Cover routine to allow wrapping target_enable_exception_catchpoints
+ inside a catch_errors */
- /* Count the number of entries. */
- for (index = 0, tmp_chain = sal_chain; tmp_chain;
- tmp_chain = tmp_chain->next)
- index++;
+static int
+cover_target_enable_exception_callback (PTR arg)
+{
+ args_for_catchpoint_enable *args = arg;
+ struct symtab_and_line *sal;
+ sal = target_enable_exception_callback (args->kind, args->enable);
+ if (sal == NULL)
+ return 0;
+ else if (sal == (struct symtab_and_line *) -1)
+ return -1;
+ else
+ return 1; /*is valid */
+}
- sals.nelts = index;
- sals.sals = (struct symtab_and_line *)
- xmalloc (index * sizeof (struct symtab_and_line));
- for (index = 0; sal_chain; sal_chain = sal_chain->next, index++)
- sals.sals[index] = sal_chain->sal;
- }
- return sals;
-}
-/* Commands to deal with catching exceptions. */
+/* This is the original v.4.16 and earlier version of the
+ catch_command_1() function. Now that other flavours of "catch"
+ have been introduced, and since exception handling can be handled
+ in other ways (through target ops) also, this is used only for the
+ GNU C++ exception handling system.
+ Note: Only the "catch" flavour of GDB 4.16 is handled here. The
+ "catch NAME" is now no longer allowed in catch_command_1(). Also,
+ there was no code in GDB 4.16 for "catch throw".
+
+ Called from catch_exception_command_1 () */
+
static void
-catch_command_1 (arg, tempflag, from_tty)
- char *arg;
- int tempflag;
- int from_tty;
+handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty)
{
/* First, translate ARG into something we can deal with in terms
of breakpoints. */
char *save_arg;
int i;
- sal.line = sal.pc = sal.end = 0;
- sal.symtab = 0;
+ INIT_SAL (&sal); /* initialize to zeroes */
/* If no arg given, or if first arg is 'if ', all active catch clauses
are breakpointed. */
- if (!arg || (arg[0] == 'i' && arg[1] == 'f'
+ if (!arg || (arg[0] == 'i' && arg[1] == 'f'
&& (arg[2] == ' ' || arg[2] == '\t')))
{
/* Grab all active catch clauses. */
{
/* Grab selected catch clauses. */
error ("catch NAME not implemented");
+
#if 0
+ /* Not sure why this code has been disabled. I'm leaving
+ it disabled. We can never come here now anyway
+ since we don't allow the "catch NAME" syntax.
+ pai/1997-07-11 */
+
/* This isn't used; I don't know what it was for. */
sals = map_catch_names (arg, catch_breakpoint);
#endif
}
- if (! sals.nelts)
+ if (!sals.nelts)
return;
save_arg = arg;
for (i = 0; i < sals.nelts; i++)
{
resolve_sal_pc (&sals.sals[i]);
-
+
while (arg && *arg)
{
if (arg[0] == 'i' && arg[1] == 'f'
&& (arg[2] == ' ' || arg[2] == '\t'))
- cond = parse_exp_1 ((arg += 2, &arg),
+ cond = parse_exp_1 ((arg += 2, &arg),
block_for_pc (sals.sals[i].pc), 0);
else
error ("Junk at end of arguments.");
sal = sals.sals[i];
if (from_tty)
- describe_other_breakpoints (sal.pc);
+ describe_other_breakpoints (sal.pc, sal.section);
b = set_raw_breakpoint (sal);
set_breakpoint_count (breakpoint_count + 1);
b->number = breakpoint_count;
- b->type = bp_breakpoint;
+
+ /* Important -- this is an ordinary breakpoint. For platforms
+ with callback support for exceptions,
+ create_exception_catchpoint() will create special bp types
+ (bp_catch_catch and bp_catch_throw), and there is code in
+ insert_breakpoints() and elsewhere that depends on that. */
+ b->type = bp_breakpoint;
+
b->cond = cond;
b->enable = enabled;
- b->disposition = tempflag ? delete : donttouch;
+ b->disposition = tempflag ? del : donttouch;
mention (b);
}
if (sals.nelts > 1)
{
- printf_unfiltered ("Multiple breakpoints were set.\n");
- printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
+ warning ("Multiple breakpoints were set.");
+ warning ("Use the \"delete\" command to delete unwanted breakpoints.");
+ }
+ free ((PTR) sals.sals);
+}
+
+#if 0
+/* This creates a temporary internal breakpoint
+ just to placate infrun */
+static struct breakpoint *
+create_temp_exception_breakpoint (CORE_ADDR pc)
+{
+ struct symtab_and_line sal;
+ struct breakpoint *b;
+
+ INIT_SAL (&sal);
+ sal.pc = pc;
+ sal.symtab = NULL;
+ sal.line = 0;
+
+ b = set_raw_breakpoint (sal);
+ if (!b)
+ error ("Internal error -- couldn't set temp exception breakpoint");
+
+ b->type = bp_breakpoint;
+ b->disposition = del;
+ b->enable = enabled;
+ b->silent = 1;
+ b->number = internal_breakpoint_number--;
+ return b;
+}
+#endif
+
+static void
+catch_command_1 (char *arg, int tempflag, int from_tty)
+{
+
+ /* The first argument may be an event name, such as "start" or "load".
+ If so, then handle it as such. If it doesn't match an event name,
+ then attempt to interpret it as an exception name. (This latter is
+ the v4.16-and-earlier GDB meaning of the "catch" command.)
+
+ First, try to find the bounds of what might be an event name. */
+ char *arg1_start = arg;
+ char *arg1_end;
+ int arg1_length;
+
+ if (arg1_start == NULL)
+ {
+ /* Old behaviour was to use pre-v-4.16 syntax */
+ /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
+ /* return; */
+ /* Now, this is not allowed */
+ error ("Catch requires an event name.");
+
+ }
+ arg1_end = ep_find_event_name_end (arg1_start);
+ if (arg1_end == NULL)
+ error ("catch requires an event");
+ arg1_length = arg1_end + 1 - arg1_start;
+
+ /* Try to match what we found against known event names. */
+ if (strncmp (arg1_start, "signal", arg1_length) == 0)
+ {
+ error ("Catch of signal not yet implemented");
+ }
+ else if (strncmp (arg1_start, "catch", arg1_length) == 0)
+ {
+ catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1,
+ tempflag, from_tty);
+ }
+ else if (strncmp (arg1_start, "throw", arg1_length) == 0)
+ {
+ catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1,
+ tempflag, from_tty);
+ }
+ else if (strncmp (arg1_start, "thread_start", arg1_length) == 0)
+ {
+ error ("Catch of thread_start not yet implemented");
+ }
+ else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0)
+ {
+ error ("Catch of thread_exit not yet implemented");
+ }
+ else if (strncmp (arg1_start, "thread_join", arg1_length) == 0)
+ {
+ error ("Catch of thread_join not yet implemented");
+ }
+ else if (strncmp (arg1_start, "start", arg1_length) == 0)
+ {
+ error ("Catch of start not yet implemented");
+ }
+ else if (strncmp (arg1_start, "exit", arg1_length) == 0)
+ {
+ error ("Catch of exit not yet implemented");
+ }
+ else if (strncmp (arg1_start, "fork", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_FORK_CATCHPOINT)
+ catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of fork not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "vfork", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_VFORK_CATCHPOINT)
+ catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of vfork not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "exec", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
+ catch_exec_command_1 (arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of exec not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "load", arg1_length) == 0)
+ {
+#if defined(SOLIB_ADD)
+ catch_load_command_1 (arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of load not implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "unload", arg1_length) == 0)
+ {
+#if defined(SOLIB_ADD)
+ catch_unload_command_1 (arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of load not implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "stop", arg1_length) == 0)
+ {
+ error ("Catch of stop not yet implemented");
+ }
+
+ /* This doesn't appear to be an event name */
+
+ else
+ {
+ /* Pre-v.4.16 behaviour was to treat the argument
+ as the name of an exception */
+ /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
+ /* Now this is not allowed */
+ error ("Unknown event kind specified for catch");
+
}
- free ((PTR)sals.sals);
+}
+
+/* Used by the gui, could be made a worker for other things. */
+
+struct breakpoint *
+set_breakpoint_sal (struct symtab_and_line sal)
+{
+ struct breakpoint *b;
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->type = bp_breakpoint;
+ b->cond = 0;
+ b->thread = -1;
+ return b;
}
#if 0
/* These aren't used; I don't know what they were for. */
/* Disable breakpoints on all catch clauses described in ARGS. */
static void
-disable_catch (args)
- char *args;
+disable_catch (char *args)
{
/* Map the disable command to catch clauses described in ARGS. */
}
/* Enable breakpoints on all catch clauses described in ARGS. */
static void
-enable_catch (args)
- char *args;
+enable_catch (char *args)
{
/* Map the disable command to catch clauses described in ARGS. */
}
/* Delete breakpoints on all catch clauses in the active scope. */
static void
-delete_catch (args)
- char *args;
+delete_catch (char *args)
{
/* Map the delete command to catch clauses described in ARGS. */
}
#endif /* 0 */
static void
-catch_command (arg, from_tty)
- char *arg;
- int from_tty;
+catch_command (char *arg, int from_tty)
{
catch_command_1 (arg, 0, from_tty);
}
\f
+
+static void
+tcatch_command (char *arg, int from_tty)
+{
+ catch_command_1 (arg, 1, from_tty);
+}
+
+
static void
-clear_command (arg, from_tty)
- char *arg;
- int from_tty;
+clear_command (char *arg, int from_tty)
{
register struct breakpoint *b, *b1;
+ int default_match;
struct symtabs_and_lines sals;
struct symtab_and_line sal;
register struct breakpoint *found;
if (arg)
{
sals = decode_line_spec (arg, 1);
+ default_match = 0;
}
else
{
- sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line));
+ sals.sals = (struct symtab_and_line *)
+ xmalloc (sizeof (struct symtab_and_line));
+ INIT_SAL (&sal); /* initialize to zeroes */
sal.line = default_breakpoint_line;
sal.symtab = default_breakpoint_symtab;
- sal.pc = 0;
+ sal.pc = default_breakpoint_address;
if (sal.symtab == 0)
error ("No source file specified.");
sals.sals[0] = sal;
sals.nelts = 1;
+
+ default_match = 1;
}
+ /* For each line spec given, delete bps which correspond
+ to it. We do this in two loops: the first loop looks at
+ the initial bp(s) in the chain which should be deleted,
+ the second goes down the rest of the chain looking ahead
+ one so it can take those bps off the chain without messing
+ up the chain. */
+
+
for (i = 0; i < sals.nelts; i++)
{
/* If exact pc given, clear bpts at that pc.
- But if sal.pc is zero, clear all bpts on specified line. */
+ If line given (pc == 0), clear all bpts on specified line.
+ If defaulting, clear all bpts on default line
+ or at default pc.
+
+ defaulting sal.pc != 0 tests to do
+
+ 0 1 pc
+ 1 1 pc _and_ line
+ 0 0 line
+ 1 0 <can't happen> */
+
sal = sals.sals[i];
found = (struct breakpoint *) 0;
+
+
while (breakpoint_chain
- && (sal.pc
- ? breakpoint_chain->address == sal.pc
- : (breakpoint_chain->source_file != NULL
- && sal.symtab != NULL
- && STREQ (breakpoint_chain->source_file,
- sal.symtab->filename)
- && breakpoint_chain->line_number == sal.line)))
+ /* Why don't we check here that this is not
+ a watchpoint, etc., as we do below?
+ I can't make it fail, but don't know
+ what's stopping the failure: a watchpoint
+ of the same address as "sal.pc" should
+ wind up being deleted. */
+
+ && (((sal.pc && (breakpoint_chain->address == sal.pc)) &&
+ (overlay_debugging == 0 ||
+ breakpoint_chain->section == sal.section))
+ || ((default_match || (0 == sal.pc))
+ && breakpoint_chain->source_file != NULL
+ && sal.symtab != NULL
+ && STREQ (breakpoint_chain->source_file, sal.symtab->filename)
+ && breakpoint_chain->line_number == sal.line)))
+
{
b1 = breakpoint_chain;
breakpoint_chain = b1->next;
}
ALL_BREAKPOINTS (b)
+
while (b->next
+ && b->next->type != bp_none
&& b->next->type != bp_watchpoint
- && (sal.pc
- ? b->next->address == sal.pc
- : (b->next->source_file != NULL
- && sal.symtab != NULL
- && STREQ (b->next->source_file, sal.symtab->filename)
- && b->next->line_number == sal.line)))
- {
- b1 = b->next;
- b->next = b1->next;
- b1->next = found;
- found = b1;
- }
+ && b->next->type != bp_hardware_watchpoint
+ && b->next->type != bp_read_watchpoint
+ && b->next->type != bp_access_watchpoint
+ && (((sal.pc && (b->next->address == sal.pc)) &&
+ (overlay_debugging == 0 ||
+ b->next->section == sal.section))
+ || ((default_match || (0 == sal.pc))
+ && b->next->source_file != NULL
+ && sal.symtab != NULL
+ && STREQ (b->next->source_file, sal.symtab->filename)
+ && b->next->line_number == sal.line)))
+
+
+ {
+ b1 = b->next;
+ b->next = b1->next;
+ b1->next = found;
+ found = b1;
+ }
if (found == 0)
{
error ("No breakpoint at this line.");
}
- if (found->next) from_tty = 1; /* Always report if deleted more than one */
- if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : "");
+ if (found->next)
+ from_tty = 1; /* Always report if deleted more than one */
+ if (from_tty)
+ printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : "");
+ breakpoints_changed ();
while (found)
{
- if (from_tty) printf_unfiltered ("%d ", found->number);
+ if (from_tty)
+ printf_unfiltered ("%d ", found->number);
b1 = found->next;
delete_breakpoint (found);
found = b1;
}
- if (from_tty) putchar_unfiltered ('\n');
+ if (from_tty)
+ putchar_unfiltered ('\n');
}
- free ((PTR)sals.sals);
+ free ((PTR) sals.sals);
}
\f
-/* Delete breakpoint in BS if they are `delete' breakpoints.
+/* Delete breakpoint in BS if they are `delete' breakpoints and
+ all breakpoints that are marked for deletion, whether hit or not.
This is called after any breakpoint is hit, or after errors. */
void
-breakpoint_auto_delete (bs)
- bpstat bs;
+breakpoint_auto_delete (bpstat bs)
{
+ struct breakpoint *b, *temp;
+
for (; bs; bs = bs->next)
- if (bs->breakpoint_at && bs->breakpoint_at->disposition == delete
+ if (bs->breakpoint_at && bs->breakpoint_at->disposition == del
&& bs->stop)
delete_breakpoint (bs->breakpoint_at);
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ if (b->disposition == del_at_next_stop)
+ delete_breakpoint (b);
+ }
}
-/* Delete a breakpoint and clean up all traces of it in the data structures. */
+/* Delete a breakpoint and clean up all traces of it in the data
+ structures. */
void
-delete_breakpoint (bpt)
- struct breakpoint *bpt;
+delete_breakpoint (struct breakpoint *bpt)
{
register struct breakpoint *b;
register bpstat bs;
+ if (bpt == NULL)
+ error ("Internal error (attempted to delete a NULL breakpoint)");
+
+
+ /* Has this bp already been deleted? This can happen because multiple
+ lists can hold pointers to bp's. bpstat lists are especial culprits.
+
+ One example of this happening is a watchpoint's scope bp. When the
+ scope bp triggers, we notice that the watchpoint is out of scope, and
+ delete it. We also delete its scope bp. But the scope bp is marked
+ "auto-deleting", and is already on a bpstat. That bpstat is then
+ checked for auto-deleting bp's, which are deleted.
+
+ A real solution to this problem might involve reference counts in bp's,
+ and/or giving them pointers back to their referencing bpstat's, and
+ teaching delete_breakpoint to only free a bp's storage when no more
+ references were extent. A cheaper bandaid was chosen. */
+ if (bpt->type == bp_none)
+ return;
+
+ if (delete_breakpoint_hook)
+ delete_breakpoint_hook (bpt);
+ breakpoint_delete_event (bpt->number);
+
if (bpt->inserted)
- target_remove_breakpoint(bpt->address, bpt->shadow_contents);
+ remove_breakpoint (bpt, mark_uninserted);
+
+ if (breakpoint_chain == bpt)
+ breakpoint_chain = bpt->next;
+
+ /* If we have callback-style exception catchpoints, don't go through
+ the adjustments to the C++ runtime library etc. if the inferior
+ isn't actually running. target_enable_exception_callback for a
+ null target ops vector gives an undesirable error message, so we
+ check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
+ exceptions are supported in this way, it's OK for now. FIXME */
+ if (ep_is_exception_catchpoint (bpt) && target_has_execution)
+ {
+ static char message1[] = "Error in deleting catchpoint %d:\n";
+ static char message[sizeof (message1) + 30];
+ args_for_catchpoint_enable args;
+
+ /* Format possible error msg */
+ sprintf (message, message1, bpt->number);
+ args.kind = bpt->type == bp_catch_catch ?
+ EX_EVENT_CATCH : EX_EVENT_THROW;
+ args.enable = 0;
+ catch_errors (cover_target_enable_exception_callback, &args,
+ message, RETURN_MASK_ALL);
+ }
- if (breakpoint_chain == bpt)
- breakpoint_chain = bpt->next;
ALL_BREAKPOINTS (b)
if (b->next == bpt)
+ {
+ b->next = bpt->next;
+ break;
+ }
+
+ /* Before turning off the visuals for the bp, check to see that
+ there are no other bps at the same address. */
+ if (tui_version)
+ {
+ int clearIt;
+
+ ALL_BREAKPOINTS (b)
{
- b->next = bpt->next;
- break;
+ clearIt = (b->address != bpt->address);
+ if (!clearIt)
+ break;
}
- check_duplicates (bpt->address);
+ if (clearIt)
+ {
+ TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0));
+ TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos));
+ }
+ }
+
+ check_duplicates (bpt->address, bpt->section);
/* If this breakpoint was inserted, and there is another breakpoint
at the same address, we need to insert the other breakpoint. */
- if (bpt->inserted)
+ if (bpt->inserted
+ && bpt->type != bp_hardware_watchpoint
+ && bpt->type != bp_read_watchpoint
+ && bpt->type != bp_access_watchpoint
+ && bpt->type != bp_catch_fork
+ && bpt->type != bp_catch_vfork
+ && bpt->type != bp_catch_exec)
{
ALL_BREAKPOINTS (b)
if (b->address == bpt->address
+ && b->section == bpt->section
&& !b->duplicate
- && b->enable != disabled)
- {
- int val;
+ && b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled)
+ {
+ int val;
+
+ /* We should never reach this point if there is a permanent
+ breakpoint at the same address as the one being deleted.
+ If there is a permanent breakpoint somewhere, it should
+ always be the only one inserted. */
+ if (b->enable == permanent)
+ internal_error ("another breakpoint was inserted on top of "
+ "a permanent breakpoint");
+
+ if (b->type == bp_hardware_breakpoint)
+ val = target_insert_hw_breakpoint (b->address, b->shadow_contents);
+ else
val = target_insert_breakpoint (b->address, b->shadow_contents);
- if (val != 0)
- {
- target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
- memory_error (val, b->address); /* which bombs us out */
- }
- else
- b->inserted = 1;
- }
+
+ if (val != 0)
+ {
+ target_terminal_ours_for_output ();
+ warning ("Cannot insert breakpoint %d:", b->number);
+ memory_error (val, b->address); /* which bombs us out */
+ }
+ else
+ b->inserted = 1;
+ }
}
free_command_lines (&bpt->commands);
free (bpt->cond_string);
if (bpt->addr_string != NULL)
free (bpt->addr_string);
+ if (bpt->exp != NULL)
+ free (bpt->exp);
if (bpt->exp_string != NULL)
free (bpt->exp_string);
+ if (bpt->val != NULL)
+ value_free (bpt->val);
if (bpt->source_file != NULL)
free (bpt->source_file);
-
- if (xgdb_verbose && bpt->type == bp_breakpoint)
- {
- target_terminal_ours_for_output ();
- printf_unfiltered ("breakpoint #%d deleted\n", bpt->number);
- }
+ if (bpt->dll_pathname != NULL)
+ free (bpt->dll_pathname);
+ if (bpt->triggered_dll_pathname != NULL)
+ free (bpt->triggered_dll_pathname);
+ if (bpt->exec_pathname != NULL)
+ free (bpt->exec_pathname);
/* Be sure no bpstat's are pointing at it after it's been freed. */
/* FIXME, how can we find all bpstat's?
We just check stop_bpstat for now. */
for (bs = stop_bpstat; bs; bs = bs->next)
if (bs->breakpoint_at == bpt)
- bs->breakpoint_at = NULL;
- free ((PTR)bpt);
+ {
+ bs->breakpoint_at = NULL;
+
+ /* we'd call bpstat_clear_actions, but that free's stuff and due
+ to the multiple pointers pointing to one item with no
+ reference counts found anywhere through out the bpstat's (how
+ do you spell fragile?), we don't want to free things twice --
+ better a memory leak than a corrupt malloc pool! */
+ bs->commands = NULL;
+ bs->old_val = NULL;
+ }
+ /* On the chance that someone will soon try again to delete this same
+ bp, we mark it as deleted before freeing its storage. */
+ bpt->type = bp_none;
+
+ free ((PTR) bpt);
}
static void
-delete_command (arg, from_tty)
- char *arg;
- int from_tty;
+do_delete_breakpoint_cleanup (void *b)
+{
+ delete_breakpoint (b);
+}
+
+struct cleanup *
+make_cleanup_delete_breakpoint (struct breakpoint *b)
{
+ return make_cleanup (do_delete_breakpoint_cleanup, b);
+}
+
+struct cleanup *
+make_exec_cleanup_delete_breakpoint (struct breakpoint *b)
+{
+ return make_exec_cleanup (do_delete_breakpoint_cleanup, b);
+}
+
+void
+delete_command (char *arg, int from_tty)
+{
+ struct breakpoint *b, *temp;
if (arg == 0)
{
+ int breaks_to_delete = 0;
+
+ /* Delete all breakpoints if no argument.
+ Do not delete internal or call-dummy breakpoints, these
+ have to be deleted with an explicit breakpoint number argument. */
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->type != bp_call_dummy &&
+ b->type != bp_shlib_event &&
+ b->type != bp_thread_event &&
+ b->number >= 0)
+ breaks_to_delete = 1;
+ }
+
/* Ask user only if there are some breakpoints to delete. */
if (!from_tty
- || (breakpoint_chain && query ("Delete all breakpoints? ", 0, 0)))
+ || (breaks_to_delete && query ("Delete all breakpoints? ")))
{
- /* No arg; clear all breakpoints. */
- while (breakpoint_chain)
- delete_breakpoint (breakpoint_chain);
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ if (b->type != bp_call_dummy &&
+ b->type != bp_shlib_event &&
+ b->type != bp_thread_event &&
+ b->number >= 0)
+ delete_breakpoint (b);
+ }
}
}
else
Unused in this case. */
static int
-breakpoint_re_set_one (bint)
- char *bint;
+breakpoint_re_set_one (PTR bint)
{
- struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */
+ /* get past catch_errs */
+ struct breakpoint *b = (struct breakpoint *) bint;
+ struct value *mark;
int i;
struct symtabs_and_lines sals;
char *s;
switch (b->type)
{
+ case bp_none:
+ warning ("attempted to reset apparently deleted breakpoint #%d?",
+ b->number);
+ return 0;
case bp_breakpoint:
+ case bp_hardware_breakpoint:
+ case bp_catch_load:
+ case bp_catch_unload:
if (b->addr_string == NULL)
{
/* Anything without a string can't be re-set. */
return 0;
}
/* In case we have a problem, disable this breakpoint. We'll restore
- its status if we succeed. */
+ its status if we succeed. */
save_enable = b->enable;
b->enable = disabled;
+ set_language (b->language);
+ input_radix = b->input_radix;
s = b->addr_string;
- sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL);
+ sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL);
for (i = 0; i < sals.nelts; i++)
{
resolve_sal_pc (&sals.sals[i]);
{
s = b->cond_string;
if (b->cond)
- free ((PTR)b->cond);
+ free ((PTR) b->cond);
b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0);
}
- /* We need to re-set the breakpoint if the address changes...*/
+ /* We need to re-set the breakpoint if the address changes... */
if (b->address != sals.sals[i].pc
- /* ...or new and old breakpoints both have source files, and
- the source file name or the line number changes... */
+ /* ...or new and old breakpoints both have source files, and
+ the source file name or the line number changes... */
|| (b->source_file != NULL
&& sals.sals[i].symtab != NULL
&& (!STREQ (b->source_file, sals.sals[i].symtab->filename)
|| b->line_number != sals.sals[i].line)
- )
- /* ...or we switch between having a source file and not having
- one. */
- || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL))
)
+ /* ...or we switch between having a source file and not having
+ one. */
+ || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL))
+ )
{
if (b->source_file != NULL)
free (b->source_file);
strlen (sals.sals[i].symtab->filename));
b->line_number = sals.sals[i].line;
b->address = sals.sals[i].pc;
-
- check_duplicates (b->address);
+
+ /* Used to check for duplicates here, but that can
+ cause trouble, as it doesn't check for disable
+ breakpoints. */
mention (b);
+
+ /* Might be better to do this just once per breakpoint_re_set,
+ rather than once for every breakpoint. */
+ breakpoints_changed ();
}
+ b->section = sals.sals[i].section;
b->enable = save_enable; /* Restore it, this worked. */
+
+
+ /* Now that this is re-enabled, check_duplicates
+ can be used. */
+ check_duplicates (b->address, b->section);
+
}
- free ((PTR)sals.sals);
+ free ((PTR) sals.sals);
break;
case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
innermost_block = NULL;
- /* The issue arises of what context to evaluate this in. The same
- one as when it was set, but what does that mean when symbols have
- been re-read? We could save the filename and functionname, but
- if the context is more local than that, the best we could do would
- be something like how many levels deep and which index at that
- particular level, but that's going to be less stable than filenames
- or functionnames. */
+ /* The issue arises of what context to evaluate this in. The
+ same one as when it was set, but what does that mean when
+ symbols have been re-read? We could save the filename and
+ functionname, but if the context is more local than that, the
+ best we could do would be something like how many levels deep
+ and which index at that particular level, but that's going to
+ be less stable than filenames or function names. */
+
/* So for now, just use a global context. */
+ if (b->exp)
+ free ((PTR) b->exp);
b->exp = parse_expression (b->exp_string);
b->exp_valid_block = innermost_block;
+ mark = value_mark ();
+ if (b->val)
+ value_free (b->val);
b->val = evaluate_expression (b->exp);
release_value (b->val);
if (VALUE_LAZY (b->val))
if (b->cond_string != NULL)
{
s = b->cond_string;
- b->cond = parse_exp_1 (&s, (struct block *)0, 0);
+ if (b->cond)
+ free ((PTR) b->cond);
+ b->cond = parse_exp_1 (&s, (struct block *) 0, 0);
}
if (b->enable == enabled)
mention (b);
+ value_free_to_mark (mark);
+ break;
+ case bp_catch_catch:
+ case bp_catch_throw:
+ break;
+ /* We needn't really do anything to reset these, since the mask
+ that requests them is unaffected by e.g., new libraries being
+ loaded. */
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
break;
default:
printf_filtered ("Deleting unknown breakpoint type %d\n", b->type);
/* fall through */
- case bp_until:
- case bp_finish:
+ /* Delete longjmp breakpoints, they will be reset later by
+ breakpoint_re_set. */
case bp_longjmp:
case bp_longjmp_resume:
- case bp_call_dummy:
delete_breakpoint (b);
break;
+
+ /* This breakpoint is special, it's set up when the inferior
+ starts and we really don't want to touch it. */
+ case bp_shlib_event:
+
+ /* 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:
+
+ /* Keep temporary breakpoints, which can be encountered when we step
+ over a dlopen call and SOLIB_ADD is resetting the breakpoints.
+ Otherwise these should have been blown away via the cleanup chain
+ or by breakpoint_init_inferior when we rerun the executable. */
+ case bp_until:
+ case bp_finish:
+ case bp_watchpoint_scope:
+ case bp_call_dummy:
+ case bp_step_resume:
+ break;
}
return 0;
/* Re-set all breakpoints after symbols have been re-loaded. */
void
-breakpoint_re_set ()
+breakpoint_re_set (void)
{
struct breakpoint *b, *temp;
+ enum language save_language;
+ int save_input_radix;
static char message1[] = "Error in re-setting breakpoint %d:\n";
- char message[sizeof (message1) + 30 /* slop */];
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- sprintf (message, message1, b->number); /* Format possible error msg */
- catch_errors (breakpoint_re_set_one, (char *) b, message,
- RETURN_MASK_ALL);
- }
+ char message[sizeof (message1) + 30 /* slop */ ];
- create_longjmp_breakpoint("longjmp");
- create_longjmp_breakpoint("_longjmp");
- create_longjmp_breakpoint("siglongjmp");
- create_longjmp_breakpoint(NULL);
+ save_language = current_language->la_language;
+ save_input_radix = input_radix;
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ /* Format possible error msg */
+ sprintf (message, message1, b->number);
+ catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL);
+ }
+ set_language (save_language);
+ input_radix = save_input_radix;
+
+#ifdef GET_LONGJMP_TARGET
+ create_longjmp_breakpoint ("longjmp");
+ create_longjmp_breakpoint ("_longjmp");
+ create_longjmp_breakpoint ("siglongjmp");
+ create_longjmp_breakpoint ("_siglongjmp");
+ create_longjmp_breakpoint (NULL);
+#endif
#if 0
- /* Took this out (temporaliy at least), since it produces an extra
+ /* Took this out (temporarily at least), since it produces an extra
blank line at startup. This messes up the gdbtests. -PB */
/* Blank line to finish off all those mention() messages we just printed. */
printf_filtered ("\n");
If from_tty is nonzero, it prints a message to that effect,
which ends with a period (no newline). */
+/* Reset the thread number of this breakpoint:
+
+ - If the breakpoint is for all threads, leave it as-is.
+ - Else, reset it to the current thread for inferior_pid. */
+void
+breakpoint_re_set_thread (struct breakpoint *b)
+{
+ if (b->thread != -1)
+ {
+ if (in_thread_list (inferior_pid))
+ b->thread = pid_to_thread_id (inferior_pid);
+ }
+}
+
void
-set_ignore_count (bptnum, count, from_tty)
- int bptnum, count, from_tty;
+set_ignore_count (int bptnum, int count, int from_tty)
{
register struct breakpoint *b;
ALL_BREAKPOINTS (b)
if (b->number == bptnum)
- {
- b->ignore_count = count;
- if (!from_tty)
- return;
- else if (count == 0)
- 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.",
- count, bptnum);
+ {
+ b->ignore_count = count;
+ if (!from_tty)
return;
- }
+ else if (count == 0)
+ 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.",
+ count, bptnum);
+ breakpoints_changed ();
+ return;
+ }
error ("No breakpoint number %d.", bptnum);
}
/* Clear the ignore counts of all breakpoints. */
void
-breakpoint_clear_ignore_counts ()
+breakpoint_clear_ignore_counts (void)
{
struct breakpoint *b;
/* Command to set ignore-count of breakpoint N to COUNT. */
static void
-ignore_command (args, from_tty)
- char *args;
- int from_tty;
+ignore_command (char *args, int from_tty)
{
char *p = args;
register int num;
if (p == 0)
error_no_arg ("a breakpoint number");
-
- num = get_number (&p);
+ num = get_number (&p);
+ if (num == 0)
+ error ("bad breakpoint number: '%s'", args);
if (*p == 0)
error ("Second argument (specified ignore-count) is missing.");
longest_to_int (value_as_long (parse_and_eval (p))),
from_tty);
printf_filtered ("\n");
+ breakpoints_changed ();
}
\f
/* Call FUNCTION on each of the breakpoints
static void
map_breakpoint_numbers (args, function)
char *args;
- void (*function) PARAMS ((struct breakpoint *));
+ void (*function) (struct breakpoint *);
{
register char *p = args;
char *p1;
register int num;
- register struct breakpoint *b;
+ register struct breakpoint *b, *tmp;
+ int match;
if (p == 0)
error_no_arg ("one or more breakpoint numbers");
while (*p)
{
+ match = 0;
p1 = p;
-
- num = get_number (&p1);
- ALL_BREAKPOINTS (b)
- if (b->number == num)
- {
- function (b);
- goto win;
- }
- printf_unfiltered ("No breakpoint number %d.\n", num);
- win:
+ num = get_number_or_range (&p1);
+ if (num == 0)
+ {
+ warning ("bad breakpoint number at or near '%s'", p);
+ }
+ else
+ {
+ ALL_BREAKPOINTS_SAFE (b, tmp)
+ if (b->number == num)
+ {
+ struct breakpoint *related_breakpoint = b->related_breakpoint;
+ match = 1;
+ function (b);
+ if (related_breakpoint)
+ function (related_breakpoint);
+ break;
+ }
+ if (match == 0)
+ printf_unfiltered ("No breakpoint number %d.\n", num);
+ }
p = p1;
}
}
+void
+disable_breakpoint (struct breakpoint *bpt)
+{
+ /* Never disable a watchpoint scope breakpoint; we want to
+ hit them when we leave scope so we can delete both the
+ watchpoint and its scope breakpoint at that time. */
+ if (bpt->type == bp_watchpoint_scope)
+ return;
+
+ /* You can't disable permanent breakpoints. */
+ if (bpt->enable == permanent)
+ return;
+
+ bpt->enable = disabled;
+
+ check_duplicates (bpt->address, bpt->section);
+
+ if (modify_breakpoint_hook)
+ modify_breakpoint_hook (bpt);
+ breakpoint_modify_event (bpt->number);
+}
+
+/* ARGSUSED */
+static void
+disable_command (char *args, int from_tty)
+{
+ register struct breakpoint *bpt;
+ if (args == 0)
+ ALL_BREAKPOINTS (bpt)
+ switch (bpt->type)
+ {
+ case bp_none:
+ warning ("attempted to disable apparently deleted breakpoint #%d?",
+ bpt->number);
+ continue;
+ case bp_breakpoint:
+ case bp_catch_load:
+ case bp_catch_unload:
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
+ case bp_catch_catch:
+ case bp_catch_throw:
+ case bp_hardware_breakpoint:
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+ disable_breakpoint (bpt);
+ default:
+ continue;
+ }
+ else
+ map_breakpoint_numbers (args, disable_breakpoint);
+}
+
static void
-enable_breakpoint (bpt)
- struct breakpoint *bpt;
+do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition)
{
- FRAME save_selected_frame = NULL;
+ struct frame_info *save_selected_frame = NULL;
int save_selected_frame_level = -1;
-
- bpt->enable = enabled;
+ int target_resources_ok, other_type_used;
+ struct value *mark;
+
+ if (bpt->type == bp_hardware_breakpoint)
+ {
+ int i;
+ i = hw_breakpoint_used_count ();
+ target_resources_ok =
+ TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint,
+ i + 1, 0);
+ if (target_resources_ok == 0)
+ error ("No hardware breakpoint support in the target.");
+ else if (target_resources_ok < 0)
+ error ("Hardware breakpoints used exceeds limit.");
+ }
- if (xgdb_verbose && bpt->type == bp_breakpoint)
- printf_unfiltered ("breakpoint #%d enabled\n", bpt->number);
+ if (bpt->enable != permanent)
+ bpt->enable = enabled;
+ bpt->disposition = disposition;
+ check_duplicates (bpt->address, bpt->section);
+ breakpoints_changed ();
- check_duplicates (bpt->address);
- if (bpt->type == bp_watchpoint)
+ if (bpt->type == bp_watchpoint ||
+ bpt->type == bp_hardware_watchpoint ||
+ bpt->type == bp_read_watchpoint ||
+ bpt->type == bp_access_watchpoint)
{
if (bpt->exp_valid_block != NULL)
{
- FRAME fr = within_scope (bpt->exp_valid_block);
+ struct frame_info *fr =
+
+ /* Ensure that we have the current frame. Else, this
+ next query may pessimistically be answered as, "No,
+ not within current scope". */
+ get_current_frame ();
+ fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame);
if (fr == NULL)
{
printf_filtered ("\
bpt->enable = disabled;
return;
}
+
save_selected_frame = selected_frame;
save_selected_frame_level = selected_frame_level;
select_frame (fr, -1);
}
value_free (bpt->val);
-
+ mark = value_mark ();
bpt->val = evaluate_expression (bpt->exp);
release_value (bpt->val);
if (VALUE_LAZY (bpt->val))
value_fetch_lazy (bpt->val);
+ if (bpt->type == bp_hardware_watchpoint ||
+ bpt->type == bp_read_watchpoint ||
+ bpt->type == bp_access_watchpoint)
+ {
+ int i = hw_watchpoint_used_count (bpt->type, &other_type_used);
+ int mem_cnt = can_use_hardware_watchpoint (bpt->val);
+
+ /* Hack around 'unused var' error for some targets here */
+ (void) mem_cnt, i;
+ target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT (
+ bpt->type, i + mem_cnt, other_type_used);
+ /* we can consider of type is bp_hardware_watchpoint, convert to
+ bp_watchpoint in the following condition */
+ if (target_resources_ok < 0)
+ {
+ printf_filtered ("\
+Cannot enable watchpoint %d because target watch resources\n\
+have been allocated for other watchpoints.\n", bpt->number);
+ bpt->enable = disabled;
+ value_free_to_mark (mark);
+ return;
+ }
+ }
+
if (save_selected_frame_level >= 0)
select_frame (save_selected_frame, save_selected_frame_level);
+ value_free_to_mark (mark);
}
+ if (modify_breakpoint_hook)
+ modify_breakpoint_hook (bpt);
+ breakpoint_modify_event (bpt->number);
}
-/* ARGSUSED */
-static void
-enable_command (args, from_tty)
- char *args;
- int from_tty;
+void
+enable_breakpoint (struct breakpoint *bpt)
{
- struct breakpoint *bpt;
- if (args == 0)
- ALL_BREAKPOINTS (bpt)
- switch (bpt->type)
- {
- case bp_breakpoint:
- case bp_watchpoint:
- enable_breakpoint (bpt);
- default:
- continue;
- }
- else
- map_breakpoint_numbers (args, enable_breakpoint);
+ do_enable_breakpoint (bpt, bpt->disposition);
}
-static void
-disable_breakpoint (bpt)
- struct breakpoint *bpt;
-{
- bpt->enable = disabled;
-
- if (xgdb_verbose && bpt->type == bp_breakpoint)
- printf_filtered ("breakpoint #%d disabled\n", bpt->number);
-
- check_duplicates (bpt->address);
-}
+/* The enable command enables the specified breakpoints (or all defined
+ breakpoints) so they once again become (or continue to be) effective
+ in stopping the inferior. */
/* ARGSUSED */
static void
-disable_command (args, from_tty)
- char *args;
- int from_tty;
+enable_command (char *args, int from_tty)
{
register struct breakpoint *bpt;
if (args == 0)
ALL_BREAKPOINTS (bpt)
switch (bpt->type)
- {
- case bp_breakpoint:
- case bp_watchpoint:
- disable_breakpoint (bpt);
- default:
- continue;
- }
+ {
+ case bp_none:
+ warning ("attempted to enable apparently deleted breakpoint #%d?",
+ bpt->number);
+ continue;
+ case bp_breakpoint:
+ case bp_catch_load:
+ case bp_catch_unload:
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
+ case bp_catch_catch:
+ case bp_catch_throw:
+ case bp_hardware_breakpoint:
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+ enable_breakpoint (bpt);
+ default:
+ continue;
+ }
else
- map_breakpoint_numbers (args, disable_breakpoint);
+ map_breakpoint_numbers (args, enable_breakpoint);
}
static void
-enable_once_breakpoint (bpt)
- struct breakpoint *bpt;
+enable_once_breakpoint (struct breakpoint *bpt)
{
- bpt->enable = enabled;
- bpt->disposition = disable;
-
- check_duplicates (bpt->address);
+ do_enable_breakpoint (bpt, disable);
}
/* ARGSUSED */
static void
-enable_once_command (args, from_tty)
- char *args;
- int from_tty;
+enable_once_command (char *args, int from_tty)
{
map_breakpoint_numbers (args, enable_once_breakpoint);
}
static void
-enable_delete_breakpoint (bpt)
- struct breakpoint *bpt;
+enable_delete_breakpoint (struct breakpoint *bpt)
{
- bpt->enable = enabled;
- bpt->disposition = delete;
-
- check_duplicates (bpt->address);
+ do_enable_breakpoint (bpt, del);
}
/* ARGSUSED */
static void
-enable_delete_command (args, from_tty)
- char *args;
- int from_tty;
+enable_delete_command (char *args, int from_tty)
{
map_breakpoint_numbers (args, enable_delete_breakpoint);
}
\f
-/*
- * Use default_breakpoint_'s, or nothing if they aren't valid.
- */
+/* Use default_breakpoint_'s, or nothing if they aren't valid. */
+
struct symtabs_and_lines
-decode_line_spec_1 (string, funfirstline)
- char *string;
- int funfirstline;
+decode_line_spec_1 (char *string, int funfirstline)
{
struct symtabs_and_lines sals;
if (string == 0)
error ("Empty line specification.");
if (default_breakpoint_valid)
sals = decode_line_1 (&string, funfirstline,
- default_breakpoint_symtab, default_breakpoint_line,
- (char ***)NULL);
+ default_breakpoint_symtab,
+ default_breakpoint_line,
+ (char ***) NULL);
else
sals = decode_line_1 (&string, funfirstline,
- (struct symtab *)NULL, 0, (char ***)NULL);
+ (struct symtab *) NULL, 0, (char ***) NULL);
if (*string)
error ("Junk at end of line specification: %s", string);
return sals;
}
\f
void
-_initialize_breakpoint ()
+_initialize_breakpoint (void)
{
+ struct cmd_list_element *c;
+
breakpoint_chain = 0;
/* Don't bother to call set_breakpoint_count. $bpnum isn't useful
before a breakpoint is set. */
breakpoint_count = 0;
add_com ("ignore", class_breakpoint, ignore_command,
- "Set ignore-count of breakpoint number N to COUNT.");
+ "Set ignore-count of breakpoint number N to COUNT.\n\
+Usage is `ignore N COUNT'.");
+ if (xdb_commands)
+ add_com_alias ("bc", "ignore", class_breakpoint, 1);
add_com ("commands", class_breakpoint, commands_command,
"Set commands to be executed when a breakpoint is hit.\n\
add_com ("condition", class_breakpoint, condition_command,
"Specify breakpoint number N to break only if COND is true.\n\
-N is an integer; COND is an expression to be evaluated whenever\n\
-breakpoint N is reached. ");
+Usage is `condition N COND', where N is an integer and COND is an\n\
+expression to be evaluated whenever breakpoint N is reached. ");
add_com ("tbreak", class_breakpoint, tbreak_command,
"Set a temporary breakpoint. Args like \"break\" command.\n\
Like \"break\" except the breakpoint is only temporary,\n\
so it will be deleted when hit. Equivalent to \"break\" followed\n\
by using \"enable delete\" on the breakpoint number.");
+ add_com ("txbreak", class_breakpoint, tbreak_at_finish_command,
+ "Set temporary breakpoint at procedure exit. Either there should\n\
+be no argument or the argument must be a depth.\n");
+
+ add_com ("hbreak", class_breakpoint, hbreak_command,
+ "Set a hardware assisted breakpoint. Args like \"break\" command.\n\
+Like \"break\" except the breakpoint requires hardware support,\n\
+some target hardware may not have this support.");
+
+ add_com ("thbreak", class_breakpoint, thbreak_command,
+ "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
+Like \"hbreak\" except the breakpoint is only temporary,\n\
+so it will be deleted when hit.");
add_prefix_cmd ("enable", class_breakpoint, enable_command,
"Enable some breakpoints.\n\
This is used to cancel the effect of the \"disable\" command.\n\
With a subcommand you can enable temporarily.",
&enablelist, "enable ", 1, &cmdlist);
+ if (xdb_commands)
+ add_com ("ab", class_breakpoint, enable_command,
+ "Enable some breakpoints.\n\
+Give breakpoint numbers (separated by spaces) as arguments.\n\
+With no subcommand, breakpoints are enabled until you command otherwise.\n\
+This is used to cancel the effect of the \"disable\" command.\n\
+With a subcommand you can enable temporarily.");
+
+ add_com_alias ("en", "enable", class_breakpoint, 1);
add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command,
- "Enable some breakpoints.\n\
+ "Enable some breakpoints.\n\
Give breakpoint numbers (separated by spaces) as arguments.\n\
This is used to cancel the effect of the \"disable\" command.\n\
May be abbreviated to simply \"enable\".\n",
- &enablebreaklist, "enable breakpoints ", 1, &enablelist);
+ &enablebreaklist, "enable breakpoints ", 1, &enablelist);
add_cmd ("once", no_class, enable_once_command,
"Enable breakpoints for one hit. Give breakpoint numbers.\n\
&enablelist);
add_prefix_cmd ("disable", class_breakpoint, disable_command,
- "Disable some breakpoints.\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.",
&disablelist, "disable ", 1, &cmdlist);
add_com_alias ("dis", "disable", class_breakpoint, 1);
add_com_alias ("disa", "disable", class_breakpoint, 1);
+ if (xdb_commands)
+ add_com ("sb", class_breakpoint, disable_command,
+ "Disable some breakpoints.\n\
+Arguments are breakpoint numbers with spaces in between.\n\
+To disable all breakpoints, give no argument.\n\
+A disabled breakpoint is not forgotten, but has no effect until reenabled.");
add_cmd ("breakpoints", class_alias, disable_command,
"Disable some breakpoints.\n\
&disablelist);
add_prefix_cmd ("delete", class_breakpoint, delete_command,
- "Delete some breakpoints or auto-display expressions.\n\
+ "Delete some breakpoints or auto-display expressions.\n\
Arguments are breakpoint numbers with spaces in between.\n\
To delete all breakpoints, give no argument.\n\
\n\
The \"unset\" command is also an alias for \"delete\".",
&deletelist, "delete ", 1, &cmdlist);
add_com_alias ("d", "delete", class_breakpoint, 1);
+ if (xdb_commands)
+ add_com ("db", class_breakpoint, delete_command,
+ "Delete some breakpoints.\n\
+Arguments are breakpoint numbers with spaces in between.\n\
+To delete all breakpoints, give no argument.\n");
add_cmd ("breakpoints", class_alias, delete_command,
"Delete some breakpoints or auto-display expressions.\n\
&deletelist);
add_com ("clear", class_breakpoint, clear_command,
- "Clear breakpoint at specified line or function.\n\
+ concat ("Clear breakpoint at specified line or function.\n\
Argument may be line number, function name, or \"*\" and an address.\n\
If line number is specified, all breakpoints in that line are cleared.\n\
If function is specified, breakpoints at beginning of function are cleared.\n\
-If an address is specified, breakpoints at that address are cleared.\n\n\
-With no argument, clears all breakpoints in the line that the selected frame\n\
+If an address is specified, breakpoints at that address are cleared.\n\n",
+ "With no argument, clears all breakpoints in the line that the selected frame\n\
is executing in.\n\
\n\
-See also the \"delete\" command which clears breakpoints by number.");
+See also the \"delete\" command which clears breakpoints by number.", NULL));
add_com ("break", class_breakpoint, break_command,
- "Set breakpoint at specified line or function.\n\
+ concat ("Set breakpoint at specified line or function.\n\
Argument may be line number, function name, or \"*\" and an address.\n\
If line number is specified, break at start of code for that line.\n\
If function is specified, break at start of code for that function.\n\
-If an address is specified, break at that exact address.\n\
-With no arg, uses current execution address of selected stack frame.\n\
+If an address is specified, break at that exact address.\n",
+ "With no arg, uses current execution address of selected stack frame.\n\
This is useful for breaking on return to a stack frame.\n\
\n\
Multiple breakpoints at one place are permitted, and useful if conditional.\n\
\n\
-Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
+Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL));
add_com_alias ("b", "break", class_run, 1);
add_com_alias ("br", "break", class_run, 1);
add_com_alias ("bre", "break", class_run, 1);
add_com_alias ("brea", "break", class_run, 1);
+ add_com ("xbreak", class_breakpoint, break_at_finish_command,
+ concat ("Set breakpoint at procedure exit. \n\
+Argument may be function name, or \"*\" and an address.\n\
+If function is specified, break at end of code for that function.\n\
+If an address is specified, break at the end of the function that contains \n\
+that exact address.\n",
+ "With no arg, uses current execution address of selected stack frame.\n\
+This is useful for breaking on return to a stack frame.\n\
+\n\
+Multiple breakpoints at one place are permitted, and useful if conditional.\n\
+\n\
+Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL));
+ add_com_alias ("xb", "xbreak", class_breakpoint, 1);
+ add_com_alias ("xbr", "xbreak", class_breakpoint, 1);
+ add_com_alias ("xbre", "xbreak", class_breakpoint, 1);
+ add_com_alias ("xbrea", "xbreak", class_breakpoint, 1);
+
+ if (xdb_commands)
+ {
+ add_com_alias ("ba", "break", class_breakpoint, 1);
+ add_com_alias ("bu", "ubreak", class_breakpoint, 1);
+ add_com ("bx", class_breakpoint, break_at_finish_at_depth_command,
+ "Set breakpoint at procedure exit. Either there should\n\
+be no argument or the argument must be a depth.\n");
+ }
+
+ if (dbx_commands)
+ {
+ add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command,
+ "Break in function/address or break at a line in the current file.",
+ &stoplist, "stop ", 1, &cmdlist);
+ add_cmd ("in", class_breakpoint, stopin_command,
+ "Break in function or address.\n", &stoplist);
+ add_cmd ("at", class_breakpoint, stopat_command,
+ "Break at a line in the current file.\n", &stoplist);
+ add_com ("status", class_info, breakpoints_info,
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+The \"Type\" column indicates one of:\n\
+\tbreakpoint - normal breakpoint\n\
+\twatchpoint - watchpoint\n\
+The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
+breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
+address and file/line number respectively.\n\n",
+ "Convenience variable \"$_\" and default examine address for \"x\"\n\
+are set to the address of the last breakpoint listed.\n\n\
+Convenience variable \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
+ }
+
add_info ("breakpoints", breakpoints_info,
- "Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
The \"Type\" column indicates one of:\n\
\tbreakpoint - normal breakpoint\n\
\twatchpoint - watchpoint\n\
The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n\
-Convenience variable \"$_\" and default examine address for \"x\"\n\
+address and file/line number respectively.\n\n",
+ "Convenience variable \"$_\" and default examine address for \"x\"\n\
are set to the address of the last breakpoint listed.\n\n\
Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.");
+breakpoint set.", NULL));
-#if MAINTENANCE_CMDS
+ if (xdb_commands)
+ add_com ("lb", class_breakpoint, breakpoints_info,
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+The \"Type\" column indicates one of:\n\
+\tbreakpoint - normal breakpoint\n\
+\twatchpoint - watchpoint\n\
+The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
+breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
+address and file/line number respectively.\n\n",
+ "Convenience variable \"$_\" and default examine address for \"x\"\n\
+are set to the address of the last breakpoint listed.\n\n\
+Convenience variable \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints,
- "Status of all breakpoints, or breakpoint number NUMBER.\n\
+ concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
The \"Type\" column indicates one of:\n\
\tbreakpoint - normal breakpoint\n\
\twatchpoint - watchpoint\n\
\tlongjmp - internal breakpoint used to step through longjmp()\n\
\tlongjmp resume - internal breakpoint at the target of longjmp()\n\
\tuntil - internal breakpoint used by the \"until\" command\n\
-\tfinish - internal breakpoint used by the \"finish\" command\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+\tfinish - internal breakpoint used by the \"finish\" command\n",
+ "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n\
-Convenience variable \"$_\" and default examine address for \"x\"\n\
+address and file/line number respectively.\n\n",
+ "Convenience variable \"$_\" and default examine address for \"x\"\n\
are set to the address of the last breakpoint listed.\n\n\
Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.",
+breakpoint set.", NULL),
&maintenanceinfolist);
-#endif /* MAINTENANCE_CMDS */
-
add_com ("catch", class_breakpoint, catch_command,
- "Set breakpoints to catch exceptions that are raised.\n\
-Argument may be a single exception to catch, multiple exceptions\n\
-to catch, or the default exception \"default\". If no arguments\n\
-are given, breakpoints are set at all exception handlers catch clauses\n\
-within the current scope.\n\
-\n\
-A condition specified for the catch applies to all breakpoints set\n\
-with this command\n\
+ "Set catchpoints to catch events.\n\
+Raised signals may be caught:\n\
+\tcatch signal - all signals\n\
+\tcatch signal <signame> - a particular signal\n\
+Raised exceptions may be caught:\n\
+\tcatch throw - all exceptions, when thrown\n\
+\tcatch throw <exceptname> - a particular exception, when thrown\n\
+\tcatch catch - all exceptions, when caught\n\
+\tcatch catch <exceptname> - a particular exception, when caught\n\
+Thread or process events may be caught:\n\
+\tcatch thread_start - any threads, just after creation\n\
+\tcatch thread_exit - any threads, just before expiration\n\
+\tcatch thread_join - any threads, just after joins\n\
+Process events may be caught:\n\
+\tcatch start - any processes, just after creation\n\
+\tcatch exit - any processes, just before expiration\n\
+\tcatch fork - calls to fork()\n\
+\tcatch vfork - calls to vfork()\n\
+\tcatch exec - calls to exec()\n\
+Dynamically-linked library events may be caught:\n\
+\tcatch load - loads of any library\n\
+\tcatch load <libname> - loads of a particular library\n\
+\tcatch unload - unloads of any library\n\
+\tcatch unload <libname> - unloads of a particular library\n\
+The act of your program's execution stopping may also be caught:\n\
+\tcatch stop\n\n\
+C++ exceptions may be caught:\n\
+\tcatch throw - all exceptions, when thrown\n\
+\tcatch catch - all exceptions, when caught\n\
\n\
+Do \"help set follow-fork-mode\" for info on debugging your program\n\
+after a fork or vfork is caught.\n\n\
Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
+ add_com ("tcatch", class_breakpoint, tcatch_command,
+ "Set temporary catchpoints to catch events.\n\
+Args like \"catch\" command.\n\
+Like \"catch\" except the catchpoint is only temporary,\n\
+so it will be deleted when hit. Equivalent to \"catch\" followed\n\
+by using \"enable delete\" on the catchpoint number.");
+
add_com ("watch", class_breakpoint, watch_command,
"Set a watchpoint for an expression.\n\
A watchpoint stops execution of your program whenever the value of\n\
an expression changes.");
- add_info ("watchpoints", breakpoints_info,
- "Synonym for ``info breakpoints''.");
-}
+ add_com ("rwatch", class_breakpoint, rwatch_command,
+ "Set a read watchpoint for an expression.\n\
+A watchpoint stops execution of your program whenever the value of\n\
+an expression is read.");
-/* OK, when we call objfile_relocate, we need to relocate breakpoints
- too. breakpoint_re_set is not a good choice--for example, if
- addr_string contains just a line number without a file name the
- breakpoint might get set in a different file. In general, there is
- no need to go all the way back to the user's string (though this might
- work if some effort were made to canonicalize it), since symtabs and
- everything except addresses are still valid.
+ add_com ("awatch", class_breakpoint, awatch_command,
+ "Set a watchpoint for an expression.\n\
+A watchpoint stops execution of your program whenever the value of\n\
+an expression is either read or written.");
- Probably the best way to solve this is to have each breakpoint save
- the objfile and the section number that was used to set it (if set
- by "*addr", probably it is best to use find_pc_line to get a symtab
- and use the objfile and block_line_section for that symtab). Then
- objfile_relocate can call fixup_breakpoints with the objfile and
- the new_offsets, and it can relocate only the appropriate breakpoints. */
+ add_info ("watchpoints", breakpoints_info,
+ "Synonym for ``info breakpoints''.");
-#ifdef IBM6000_TARGET
-/* But for now, just kludge it based on the concept that before an
- objfile is relocated the breakpoint is below 0x10000000, and afterwards
- it is higher, so that way we only relocate each breakpoint once. */
-void
-fixup_breakpoints (low, high, delta)
- CORE_ADDR low;
- CORE_ADDR high;
- CORE_ADDR delta;
-{
- struct breakpoint *b;
+ c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger,
+ (char *) &can_use_hw_watchpoints,
+ "Set debugger's willingness to use watchpoint hardware.\n\
+If zero, gdb will not use hardware for new watchpoints, even if\n\
+such is available. (However, any hardware watchpoints that were\n\
+created before setting this to nonzero, will continue to use watchpoint\n\
+hardware.)",
+ &setlist);
+ add_show_from_set (c, &showlist);
- ALL_BREAKPOINTS (b)
- {
- if (b->address >= low && b->address <= high)
- b->address += delta;
- }
+ can_use_hw_watchpoints = 1;
}
-#endif
projects / thirdparty / binutils-gdb.git / blobdiff