/* Everything about breakpoints, for GDB.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001 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 <stdio.h>
-#include <ctype.h>
#include "defs.h"
+#include <ctype.h>
#include "symtab.h"
#include "frame.h"
#include "breakpoint.h"
#include "gdbcore.h"
#include "gdbcmd.h"
#include "value.h"
-#include "ctype.h"
#include "command.h"
#include "inferior.h"
+#include "gdbthread.h"
#include "target.h"
#include "language.h"
-#include <string.h>
+#include "gdb_string.h"
+#include "demangle.h"
+#include "annotate.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "linespec.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 *));
+static void tbreak_at_finish_command (char *, int);
-static struct breakpoint *
-set_raw_breakpoint PARAMS ((struct symtab_and_line));
+static void break_command_1 (char *, int, int);
-static void
-check_duplicates PARAMS ((CORE_ADDR));
+static void mention (struct breakpoint *);
-static void
-describe_other_breakpoints PARAMS ((CORE_ADDR));
+struct breakpoint *set_raw_breakpoint (struct symtab_and_line);
-static void
-watchpoints_info PARAMS ((char *, int));
+static void check_duplicates (CORE_ADDR, asection *);
-static void
-breakpoints_info PARAMS ((char *, int));
+static void describe_other_breakpoints (CORE_ADDR, asection *);
-static void
-breakpoint_1 PARAMS ((int, enum bptype));
+static void breakpoints_info (char *, int);
-static bpstat
-bpstat_alloc PARAMS ((struct breakpoint *, bpstat));
+static void breakpoint_1 (int, int);
-static int
-breakpoint_cond_eval PARAMS ((char *));
+static bpstat bpstat_alloc (struct breakpoint *, bpstat);
-static void
-cleanup_executing_breakpoints PARAMS ((int));
+static int breakpoint_cond_eval (PTR);
-static void
-commands_command PARAMS ((char *, int));
+static void cleanup_executing_breakpoints (PTR);
-static void
-condition_command PARAMS ((char *, int));
+static void commands_command (char *, int);
-static int
-get_number PARAMS ((char **));
+static void condition_command (char *, int);
-static void
-set_breakpoint_count PARAMS ((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);
-extern int addressprint; /* Print machine addresses? */
-extern int demangle; /* Print de-mangled symbol names? */
+static void stop_command (char *arg, int from_tty);
+
+static void stopin_command (char *arg, int from_tty);
+
+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. */
+
+/* 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);
+
+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)
+#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. */
+
+int show_breakpoint_hit_counts = 1;
/* Chain of all breakpoints defined. */
/* 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 val;
+ value_ptr val;
while (isalnum (*p) || *p == '_')
p++;
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
{
+ if (*p == '-')
+ ++p;
while (*p >= '0' && *p <= '9')
++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 (b->cond);
- b->cond = 0;
- }
- if (b->cond_string != NULL)
- free (b->cond_string);
+ {
+ if (b->cond)
+ {
+ xfree (b->cond);
+ b->cond = 0;
+ }
+ if (b->cond_string != NULL)
+ xfree (b->cond_string);
- if (*p == 0)
- {
- b->cond = 0;
- b->cond_string = NULL;
- if (from_tty)
- printf ("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 ("Type commands for when breakpoint %d is hit, one per line.\n\
-End with a line saying just \"end\".\n", bnum);
- fflush (stdout);
- }
- 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. */
+ 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);
+ }
- bcopy (b->shadow_contents + bptoffset,
- myaddr + membpt - memaddr, 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)
{
- fprintf (stderr,
- "Cannot insert breakpoint %d:\n", b->number);
- printf_filtered ("Disabling shared library breakpoints:\n");
+ target_terminal_ours_for_output ();
+ 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
{
- fprintf (stderr, "Cannot insert breakpoint %d:\n", b->number);
+ target_terminal_ours_for_output ();
+ warning ("Cannot insert breakpoint %d:", b->number);
#ifdef ONE_PROCESS_WRITETEXT
- fprintf (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 (val)
+ return_val = val; /* remember failure */
}
- if (disabled_breaks)
- printf_filtered ("\n");
- return val;
-}
+ else if (ep_is_exception_catchpoint (b)
+ && b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && !b->inserted
+ && !b->duplicate)
-int
-remove_breakpoints ()
-{
- register struct breakpoint *b;
- int val;
+ {
+ /* 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);
-#ifdef BREAKPOINT_DEBUG
- printf ("Removing breakpoints.\n");
-#endif /* BREAKPOINT_DEBUG */
+ val = target_insert_breakpoint (b->address, b->shadow_contents);
+ if (val)
+ {
+ /* 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;
+ }
+ }
- ALL_BREAKPOINTS (b)
- if (b->type != bp_watchpoint && b->inserted)
- {
- val = target_remove_breakpoint(b->address, b->shadow_contents);
if (val)
- return val;
- b->inserted = 0;
-#ifdef BREAKPOINT_DEBUG
- printf ("Removed breakpoint at %s",
- local_hex_string(b->address));
- printf (", shadow %s",
- local_hex_string(b->shadow_contents[0]));
- printf (", %s.\n",
- local_hex_string(b->shadow_contents[1]));
-#endif /* BREAKPOINT_DEBUG */
+ 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.
- This is done when the inferior is loaded. */
+ if (within_current_scope)
+ {
+ /* Evaluate the expression and cut the chain of values
+ produced off from the value chain.
-void
-mark_breakpoints_out ()
+ 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 (PIDGET (inferior_ptid));
+ break;
+ case bp_catch_vfork:
+ val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid));
+ break;
+ case bp_catch_exec:
+ val = target_insert_exec_catchpoint (PIDGET (inferior_ptid));
+ 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)
- b->inserted = 0;
+ {
+ if (b->inserted)
+ {
+ val = remove_breakpoint (b, mark_uninserted);
+ if (val != 0)
+ return val;
+ }
+ }
+ return 0;
}
-/* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC.
- When continuing from a location with a breakpoint,
- we actually single step once before calling insert_breakpoints. */
-
int
-breakpoint_here_p (pc)
- CORE_ADDR pc;
+remove_hw_watchpoints (void)
{
register struct breakpoint *b;
+ int val;
ALL_BREAKPOINTS (b)
- if (b->enable != disabled && b->address == pc)
- return 1;
-
+ {
+ 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;
}
-\f
-/* bpstat stuff. External routines' interfaces are documented
- in breakpoint.h. */
-/* Clear a bpstat so that it says we are not at any breakpoint.
- Also free any storage that is part of a bpstat. */
+int
+reattach_breakpoints (int pid)
+{
+ register struct breakpoint *b;
+ int val;
+ ptid_t saved_inferior_ptid = inferior_ptid;
+
+ /* FIXME: use a cleanup, to insure that inferior_ptid gets replaced! */
+ inferior_ptid = pid_to_ptid (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_ptid = saved_inferior_ptid;
+ return val;
+ }
+ }
+ }
+ inferior_ptid = saved_inferior_ptid;
+ return 0;
+}
void
-bpstat_clear (bsp)
- bpstat *bsp;
+update_breakpoints_after_exec (void)
{
- bpstat p;
- bpstat q;
+ struct breakpoint *b;
+ struct breakpoint *temp;
- if (bsp == 0)
- return;
- p = *bsp;
- while (p != NULL)
- {
- q = p->next;
- if (p->old_val != NULL)
- value_free (p->old_val);
- free (p);
- p = q;
- }
- *bsp = NULL;
-}
+ /* Doing this first prevents the badness of having delete_breakpoint()
+ write a breakpoint's current "shadow contents" to lift the bp. That
+ shadow is NOT valid after an exec()! */
+ mark_breakpoints_out ();
-/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
- is part of the bpstat is copied as well. */
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ /* Solib breakpoints must be explicitly reset after an exec(). */
+ if (b->type == bp_shlib_event)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
-bpstat
-bpstat_copy (bs)
- bpstat bs;
-{
- bpstat p = NULL;
- bpstat tmp;
- bpstat retval;
+ /* Thread event breakpoints must be set anew after an exec(). */
+ if (b->type == bp_thread_event)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
- if (bs == NULL)
- return bs;
+ /* Step-resume breakpoints are meaningless after an exec(). */
+ if (b->type == bp_step_resume)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
- for (; bs != NULL; bs = bs->next)
- {
- tmp = (bpstat) xmalloc (sizeof (*tmp));
- bcopy (bs, tmp, sizeof (*tmp));
- if (p == NULL)
- /* This is the first thing in the chain. */
- retval = tmp;
- else
- p->next = tmp;
- p = tmp;
- }
- p->next = NULL;
- return retval;
-}
+ /* Ditto the sigtramp handler breakpoints. */
+ if (b->type == bp_through_sigtramp)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
-/* Find the bpstat associated with this breakpoint */
+ /* Ditto the exception-handling catchpoints. */
+ if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw))
+ {
+ delete_breakpoint (b);
+ continue;
+ }
-bpstat
-bpstat_find_breakpoint(bsp, breakpoint)
- bpstat bsp;
- struct breakpoint *breakpoint;
-{
- if (bsp == NULL) return NULL;
+ /* 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;
+ }
- for (;bsp != NULL; bsp = bsp->next) {
- if (bsp->breakpoint_at == breakpoint) return bsp;
+ /* 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;
}
- 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
- 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;
+detach_breakpoints (int pid)
{
- struct breakpoint *b;
+ register struct breakpoint *b;
+ int val;
+ ptid_t saved_inferior_ptid = inferior_ptid;
- if ((*bsp) == NULL)
- return 0; /* No more breakpoint values */
- else
- {
- b = (*bsp)->breakpoint_at;
- *bsp = (*bsp)->next;
- if (b == NULL)
- return -1; /* breakpoint that's been deleted since */
- else
- return b->number; /* We have its number */
- }
-}
+ if (pid == PIDGET (inferior_ptid))
+ error ("Cannot detach breakpoints of inferior_ptid");
-/* Modify BS so that the actions will not be performed. */
+ /* FIXME: use a cleanup, to insure that inferior_ptid gets replaced! */
+ inferior_ptid = pid_to_ptid (pid); /* Because remove_breakpoint will use this global. */
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->inserted)
+ {
+ val = remove_breakpoint (b, mark_inserted);
+ if (val != 0)
+ {
+ inferior_ptid = saved_inferior_ptid;
+ return val;
+ }
+ }
+ }
+ inferior_ptid = saved_inferior_ptid;
+ return 0;
+}
-void
-bpstat_clear_actions (bs)
- bpstat bs;
+static int
+remove_breakpoint (struct breakpoint *b, insertion_state_t is)
{
- for (; bs != NULL; bs = bs->next)
+ 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)
{
- bs->commands = NULL;
- if (bs->old_val != NULL)
+ if (b->type == bp_hardware_breakpoint)
+ val = target_remove_hw_breakpoint (b->address, b->shadow_contents);
+ else
{
- value_free (bs->old_val);
- bs->old_val = NULL;
+ /* 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
+ presumably 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);
}
-}
-
-/* Stub for cleaning up our state if we error-out of a breakpoint command */
-/* ARGSUSED */
-static void
-cleanup_executing_breakpoints (ignore)
- int ignore;
-{
- executing_breakpoint_commands = 0;
-}
-
-/* Execute all the commands associated with all the breakpoints at this
- location. Any of these commands could cause the process to proceed
- beyond this point, etc. We look out for such changes by checking
- the global "breakpoint_proceeded" after each command. */
-
-void
-bpstat_do_actions (bsp)
- bpstat *bsp;
-{
- bpstat bs;
- struct cleanup *old_chain;
-
- executing_breakpoint_commands = 1;
- old_chain = make_cleanup (cleanup_executing_breakpoints, 0);
+ 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;
-top:
- bs = *bsp;
+ 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));
- breakpoint_proceeded = 0;
- for (; bs != NULL; bs = bs->next)
+ 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)
{
- while (bs->commands)
+ val = -1;
+ switch (b->type)
{
- char *line = bs->commands->line;
- bs->commands = bs->commands->next;
- execute_command (line, 0);
- /* If the inferior is proceeded by the command, bomb out now.
- The bpstat chain has been blown away by wait_for_inferior.
- But since execution has stopped again, there is a new bpstat
- to look at, so start over. */
- if (breakpoint_proceeded)
- goto top;
+ case bp_catch_fork:
+ val = target_remove_fork_catchpoint (PIDGET (inferior_ptid));
+ break;
+ case bp_catch_vfork:
+ val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid));
+ break;
+ case bp_catch_exec:
+ val = target_remove_exec_catchpoint (PIDGET (inferior_ptid));
+ 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)
+ {
- executing_breakpoint_commands = 0;
- discard_cleanups (old_chain);
-}
-
-/* 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). */
+ 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)
+ {
-int
-bpstat_print (bs)
- bpstat bs;
-{
- /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
- which has since been deleted. */
- if (bs == NULL
- || bs->breakpoint_at == NULL
- || (bs->breakpoint_at->type != bp_breakpoint
- && bs->breakpoint_at->type != bp_watchpoint))
- return 0;
-
- /* If bpstat_stop_status says don't print, OK, we won't. An example
- circumstance is when we single-stepped for both a watchpoint and
- for a "stepi" instruction. The bpstat says that the watchpoint
- explains the stop, but we shouldn't print because the watchpoint's
- value didn't change -- and the real reason we are stopping here
- rather than continuing to step (as the watchpoint would've had us do)
- is because of the "stepi". */
- if (!bs->print)
- return 0;
+ val = target_remove_breakpoint (b->address, b->shadow_contents);
+ if (val)
+ return val;
- if (bs->breakpoint_at->type == bp_breakpoint)
- {
- /* I think the user probably only wants to see one breakpoint
- number, not all of them. */
- printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number);
- return 0;
+ b->inserted = (is == mark_inserted);
}
-
- if (bs->old_val != NULL)
- {
- printf_filtered ("\nWatchpoint %d, ", bs->breakpoint_at->number);
- print_expression (bs->breakpoint_at->exp, stdout);
- printf_filtered ("\nOld value = ");
- value_print (bs->old_val, stdout, 0, Val_pretty_default);
- printf_filtered ("\nNew value = ");
- value_print (bs->breakpoint_at->val, stdout, 0,
- Val_pretty_default);
- printf_filtered ("\n");
- value_free (bs->old_val);
- bs->old_val = NULL;
- return 1;
- }
-
- /* 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
- with respect to bpstat_explains_signal). */
- if (bs->next)
- return bpstat_print (bs->next);
- fprintf_filtered (stderr, "gdb internal error: in bpstat_print\n");
return 0;
}
-/* Evaluate the expression EXP and return 1 if value is zero.
- This is used inside a catch_errors to evaluate the breakpoint condition.
- The argument is a "struct expression *" that has been cast to char * to
- make it pass through catch_errors. */
+/* Clear the "inserted" flag in all breakpoints. */
-static int
-breakpoint_cond_eval (exp)
- char *exp;
+void
+mark_breakpoints_out (void)
{
- return !value_true (evaluate_expression ((struct expression *)exp));
-}
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ b->inserted = 0;
+}
+
+/* Clear the "inserted" flag in all breakpoints and delete any
+ breakpoints which should go away between runs of the program.
+
+ Plus other such housekeeping that has to be done for breakpoints
+ between runs.
+
+ Note: this function gets called at the end of a run (by
+ generic_mourn_inferior) and when a run begins (by
+ init_wait_for_inferior). */
+
+
+
+void
+breakpoint_init_inferior (enum inf_context context)
+{
+ register struct breakpoint *b, *temp;
+ static int warning_needed = 0;
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ b->inserted = 0;
+
+ switch (b->type)
+ {
+ case bp_call_dummy:
+ case bp_watchpoint_scope:
+
+ /* If the call dummy breakpoint is at the entry point it will
+ cause problems when the inferior is rerun, so we better
+ get rid of it.
+
+ Also get rid of scope breakpoints. */
+ delete_breakpoint (b);
+ break;
+
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+
+ /* Likewise for watchpoints on local expressions. */
+ if (b->exp_valid_block != NULL)
+ delete_breakpoint (b);
+ break;
+ default:
+ /* Likewise for exception catchpoints in dynamic-linked
+ executables where required */
+ if (ep_is_exception_catchpoint (b) &&
+ exception_catchpoints_are_fragile)
+ {
+ warning_needed = 1;
+ delete_breakpoint (b);
+ }
+ break;
+ }
+ }
+
+ if (exception_catchpoints_are_fragile)
+ exception_support_initialized = 0;
+
+ /* Don't issue the warning unless it's really needed... */
+ if (warning_needed && (context != inf_exited))
+ {
+ warning ("Exception catchpoints from last run were deleted.");
+ warning ("You must reinsert them explicitly.");
+ warning_needed = 0;
+ }
+}
+
+/* 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_inserted_here_p (CORE_ADDR pc)
+{
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ if (b->inserted
+ && b->address == pc) /* bp is inserted and matches pc */
+ {
+ if (overlay_debugging &&
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Return nonzero if FRAME is a dummy frame. We can't use
+ PC_IN_CALL_DUMMY because figuring out the saved SP would take too
+ much time, at least using get_saved_register on the 68k. This
+ means that for this function to work right a port must use the
+ bp_call_dummy breakpoint. */
+
+int
+frame_in_dummy (struct frame_info *frame)
+{
+ struct breakpoint *b;
+
+ if (!CALL_DUMMY_P)
+ return 0;
+
+ if (USE_GENERIC_DUMMY_FRAMES)
+ return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame);
+
+ 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_thread_match (PC, PID) returns true if the breakpoint at
+ PC is valid for process/thread PID. */
+
+int
+breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid)
+{
+ struct breakpoint *b;
+ int thread;
+
+ thread = pid_to_thread_id (ptid);
+
+ ALL_BREAKPOINTS (b)
+ if (b->enable != disabled
+ && b->enable != shlib_disabled
+ && b->enable != call_disabled
+ && b->address == pc
+ && (b->thread == -1 || b->thread == thread))
+ {
+ if (overlay_debugging &&
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
+
+ return 0;
+}
+\f
+
+/* bpstat stuff. External routines' interfaces are documented
+ in breakpoint.h. */
+
+int
+ep_is_catchpoint (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 (bpstat *bsp)
+{
+ bpstat p;
+ bpstat q;
+
+ if (bsp == 0)
+ return;
+ p = *bsp;
+ while (p != NULL)
+ {
+ q = p->next;
+ if (p->old_val != NULL)
+ value_free (p->old_val);
+ xfree (p);
+ p = q;
+ }
+ *bsp = NULL;
+}
+
+/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
+ is part of the bpstat is copied as well. */
+
+bpstat
+bpstat_copy (bpstat bs)
+{
+ bpstat p = NULL;
+ bpstat tmp;
+ bpstat retval = NULL;
+
+ if (bs == NULL)
+ return bs;
+
+ for (; bs != NULL; bs = bs->next)
+ {
+ tmp = (bpstat) xmalloc (sizeof (*tmp));
+ memcpy (tmp, bs, sizeof (*tmp));
+ if (p == NULL)
+ /* This is the first thing in the chain. */
+ retval = tmp;
+ else
+ p->next = tmp;
+ p = tmp;
+ }
+ p->next = NULL;
+ return retval;
+}
+
+/* Find the bpstat associated with this breakpoint */
+
+bpstat
+bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint)
+{
+ if (bsp == NULL)
+ return NULL;
+
+ for (; bsp != NULL; bsp = bsp->next)
+ {
+ if (bsp->breakpoint_at == breakpoint)
+ return bsp;
+ }
+ return NULL;
+}
+
+/* Find a step_resume breakpoint associated with this bpstat.
+ (If there are multiple step_resume bp's on the list, this function
+ will arbitrarily pick one.)
+
+ It is an error to use this function if BPSTAT doesn't contain a
+ step_resume breakpoint.
+
+ See wait_for_inferior's use of this function. */
+struct breakpoint *
+bpstat_find_step_resume_breakpoint (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 (bpstat *bsp)
+{
+ struct breakpoint *b;
+
+ if ((*bsp) == NULL)
+ return 0; /* No more breakpoint values */
+ else
+ {
+ b = (*bsp)->breakpoint_at;
+ *bsp = (*bsp)->next;
+ if (b == NULL)
+ return -1; /* breakpoint that's been deleted since */
+ else
+ return b->number; /* We have its number */
+ }
+}
+
+/* Modify BS so that the actions will not be performed. */
+
+void
+bpstat_clear_actions (bpstat bs)
+{
+ for (; bs != NULL; bs = bs->next)
+ {
+ bs->commands = NULL;
+ if (bs->old_val != NULL)
+ {
+ value_free (bs->old_val);
+ bs->old_val = NULL;
+ }
+ }
+}
+
+/* Stub for cleaning up our state if we error-out of a breakpoint command */
+/* ARGSUSED */
+static void
+cleanup_executing_breakpoints (PTR ignore)
+{
+ executing_breakpoint_commands = 0;
+}
+
+/* Execute all the commands associated with all the breakpoints at this
+ location. Any of these commands could cause the process to proceed
+ beyond this point, etc. We look out for such changes by checking
+ the global "breakpoint_proceeded" after each command. */
+
+void
+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)
+ {
+ cmd = bs->commands;
+ while (cmd != NULL)
+ {
+ execute_control_command (cmd);
+
+ if (breakpoint_proceeded)
+ 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 function for a bpstat. In the future,
+ much of this logic could (should?) be moved to bpstat_stop_status,
+ by having it set different print_it values.
+
+ Current scheme: When we stop, bpstat_print() is called. It loops
+ through the bpstat list of things causing this stop, calling the
+ print_bp_stop_message function on each one. The behavior of the
+ print_bp_stop_message function depends on the print_it field of
+ bpstat. If such field so indicates, call this function here.
+
+ Return values from this routine (ultimately used by bpstat_print()
+ and normal_stop() to decide what to do):
+ PRINT_NOTHING: Means we already printed all we needed to print,
+ don't print anything else.
+ PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
+ that something to be followed by a location.
+ PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
+ that something to be followed by a location.
+ PRINT_UNKNOWN: Means we printed nothing or we need to do some more
+ analysis. */
+
+static enum print_stop_action
+print_it_typical (bpstat bs)
+{
+#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)
+ return PRINT_UNKNOWN;
+
+ 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. */
+ annotate_breakpoint (bs->breakpoint_at->number);
+ printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number);
+ 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");
+#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_field_string (uiout, "reason", "access-watchpoint-trigger");
+ 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, "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;
+ }
+}
+
+/* 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 (__FILE__, __LINE__,
+ "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;
+
+ /* 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
+ with respect to bpstat_explains_signal). */
+ 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, 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.
+ This is used inside a catch_errors to evaluate the breakpoint condition.
+ The argument is a "struct expression *" that has been cast to char * to
+ make it pass through catch_errors. */
+
+static int
+breakpoint_cond_eval (PTR 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 */
+static bpstat
+bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ )
+{
+ bpstat bs;
+
+ bs = (bpstat) xmalloc (sizeof (*bs));
+ cbs->next = bs;
+ bs->breakpoint_at = b;
+ /* If the condition is false, etc., don't do the commands. */
+ bs->commands = NULL;
+ bs->old_val = NULL;
+ bs->print_it = print_it_normal;
+ return bs;
+}
+\f
+/* Possible return values for watchpoint_check (this can't be an enum
+ because of check_errors). */
+/* 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 (PTR p)
+{
+ bpstat bs = (bpstat) p;
+ struct breakpoint *b;
+ struct frame_info *fr;
+ int within_current_scope;
+
+ b = bs->breakpoint_at;
+
+ if (b->exp_valid_block == NULL)
+ within_current_scope = 1;
+ else
+ {
+ /* 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. */
+
+ value_ptr mark = value_mark ();
+ value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp);
+ if (!value_equal (b->val, new_val))
+ {
+ release_value (new_val);
+ value_free_to_mark (mark);
+ bs->old_val = b->val;
+ b->val = new_val;
+ /* We will stop here */
+ return WP_VALUE_CHANGED;
+ }
+ else
+ {
+ /* Nothing changed, don't do anything. */
+ value_free_to_mark (mark);
+ /* We won't stop here */
+ return WP_VALUE_NOT_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). */
+ /* 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 deleted because the program has left the block in\n\
+which its expression is valid.\n", bs->breakpoint_at->number);
+#endif
+
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
+
+ return WP_DELETED;
+ }
+}
+
+/* Get a bpstat associated with having just stopped at address *PC
+ and frame address CORE_ADDRESS. Update *PC to point at the
+ breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero
+ if this is known to not be a real breakpoint (it could still be a
+ watchpoint, though). */
+
+/* Determine whether we stopped at a breakpoint, etc, or whether we
+ don't understand this stop. Result is a chain of bpstat's such that:
+
+ if we don't understand the stop, the result is a null pointer.
+
+ if we understand why we stopped, the result is not null.
+
+ 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. */
+
+bpstat
+bpstat_stop_status (CORE_ADDR *pc, int not_a_breakpoint)
+{
+ register struct breakpoint *b, *temp;
+ CORE_ADDR bp_addr;
+ /* True if we've hit a breakpoint (as opposed to a watchpoint). */
+ int real_breakpoint = 0;
+ /* Root of the chain of bpstat's */
+ 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 - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P () ?
+ 0 : DECR_PC_AFTER_BREAK);
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ {
+ if (b->enable == disabled
+ || b->enable == shlib_disabled
+ || b->enable == call_disabled)
+ continue;
+
+ if (b->type != bp_watchpoint
+ && b->type != bp_hardware_watchpoint
+ && b->type != bp_read_watchpoint
+ && b->type != bp_access_watchpoint
+ && b->type != bp_hardware_breakpoint
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_catch
+ && b->type != bp_catch_throw) /* a non-watchpoint bp */
+ if (b->address != bp_addr || /* address doesn't match or */
+ (overlay_debugging && /* overlay doesn't match */
+ section_is_overlay (b->section) &&
+ !section_is_mapped (b->section)))
+ continue;
+
+ if (b->type == bp_hardware_breakpoint
+ && b->address != (*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 (PIDGET (inferior_ptid))
+ || ((b->dll_pathname != NULL)
+ && (strcmp (b->dll_pathname,
+ SOLIB_LOADED_LIBRARY_PATHNAME (
+ PIDGET (inferior_ptid)))
+ != 0)))
+#endif
+ )
+ continue;
+
+ if ((b->type == bp_catch_unload)
+#if defined(SOLIB_HAVE_UNLOAD_EVENT)
+ && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid))
+ || ((b->dll_pathname != NULL)
+ && (strcmp (b->dll_pathname,
+ SOLIB_UNLOADED_LIBRARY_PATHNAME (
+ PIDGET (inferior_ptid)))
+ != 0)))
+#endif
+ )
+ continue;
+
+ if ((b->type == bp_catch_fork)
+ && !target_has_forked (PIDGET (inferior_ptid),
+ &b->forked_inferior_pid))
+ continue;
+
+ if ((b->type == bp_catch_vfork)
+ && !target_has_vforked (PIDGET (inferior_ptid),
+ &b->forked_inferior_pid))
+ continue;
+
+ if ((b->type == bp_catch_exec)
+ && !target_has_execd (PIDGET (inferior_ptid), &b->exec_pathname))
+ continue;
+
+ if (ep_is_exception_catchpoint (b) &&
+ !(current_exception_event = target_get_current_exception_event ()))
+ continue;
+
+ /* Come here if it's a watchpoint, or if the break address matches */
+
+ bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */
+
+ /* Watchpoints may change this, if not found to have triggered. */
+ bs->stop = 1;
+ bs->print = 1;
+
+ 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_DELETED:
+ /* We've already printed what needs to be printed. */
+ bs->print_it = print_it_done;
+ /* Stop. */
+ break;
+ case WP_VALUE_CHANGED:
+ 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:
+ /* Stop. */
+ ++(b->hit_count);
+ break;
+ default:
+ /* Can't happen. */
+ case 0:
+ /* Error from catch_errors. */
+ printf_filtered ("Watchpoint %d deleted.\n", b->number);
+ if (b->related_breakpoint)
+ b->related_breakpoint->disposition = del_at_next_stop;
+ b->disposition = del_at_next_stop;
+ /* We've already printed what needs to be printed. */
+ bs->print_it = print_it_done;
+ break;
+ }
+ else /* 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;
+ }
+
+ 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, (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;
+ }
+ }
+ }
+ /* 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 (real_breakpoint && bs)
+ {
+ 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
+ {
+ if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs)
+ {
+ *pc = bp_addr;
+#if defined (SHIFT_INST_REGS)
+ SHIFT_INST_REGS ();
+#else /* No SHIFT_INST_REGS. */
+ write_pc (bp_addr);
+#endif /* No SHIFT_INST_REGS. */
+ }
+ }
+ }
+
+ /* 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 (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,
+
+ /* There was a watchpoint, stop but don't print. */
+ wp_silent,
+
+ /* There was a watchpoint, stop and print. */
+ wp_noisy,
+
+ /* 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 and print. */
+ bp_noisy,
+
+ /* We hit the longjmp breakpoint. */
+ long_jump,
+
+ /* We hit the longjmp_resume breakpoint. */
+ long_resume,
+
+ /* We hit the step_resume breakpoint. */
+ step_resume,
+
+ /* We hit the through_sigtramp breakpoint. */
+ through_sig,
+
+ /* We hit the shared library event breakpoint. */
+ shlib_event,
+
+ /* We caught a shared library event. */
+ catch_shlib_event,
+
+ /* This is just used to count how many enums there are. */
+ class_last
+ };
+
+ /* Here is the table which drives this routine. So that we can
+ format it pretty, we define some abbreviations for the
+ enum bpstat_what codes. */
+#define kc BPSTAT_WHAT_KEEP_CHECKING
+#define ss BPSTAT_WHAT_STOP_SILENT
+#define sn BPSTAT_WHAT_STOP_NOISY
+#define sgl BPSTAT_WHAT_SINGLE
+#define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
+#define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
+#define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
+#define sr BPSTAT_WHAT_STEP_RESUME
+#define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
+#define shl BPSTAT_WHAT_CHECK_SHLIBS
+#define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
+
+/* "Can't happen." Might want to print an error message.
+ abort() is not out of the question, but chances are GDB is just
+ a bit confused, not unusable. */
+#define err BPSTAT_WHAT_STOP_NOISY
+
+ /* Given an old action and a class, come up with a new action. */
+ /* One interesting property of this table is that wp_silent is the same
+ as bp_silent and wp_noisy is the same as bp_noisy. That is because
+ after stopping, the check for whether to step over a breakpoint
+ (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
+ reference to how we stopped. We retain separate wp_silent and
+ bp_silent codes in case we want to change that someday.
+
+ 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 shlr 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
+ at first IN_SIGTRAMP where we set the step_resume breakpoint). */
+ /* We handle the through_sigtramp_breakpoint the same way; having both
+ one of those and a step_resume_breakpoint is probably very rare (?). */
+
+ static const enum bpstat_what_main_action
+ table[(int) class_last][(int) BPSTAT_WHAT_LAST] =
+ {
+ /* old action */
+ /* 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;
+
+ retval.call_dummy = 0;
+ for (; bs != NULL; bs = bs->next)
+ {
+ enum class bs_class = no_effect;
+ if (bs->breakpoint_at == NULL)
+ /* I suspect this can happen if it was a momentary breakpoint
+ which has since been deleted. */
+ 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)
+ {
+ if (bs->print)
+ bs_class = bp_noisy;
+ else
+ bs_class = bp_silent;
+ }
+ else
+ 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_noisy;
+ else
+ bs_class = wp_silent;
+ }
+ else
+ /* There was a watchpoint, but we're not stopping.
+ This requires no further action. */
+ bs_class = no_effect;
+ break;
+ case bp_longjmp:
+ bs_class = long_jump;
+ break;
+ case bp_longjmp_resume:
+ bs_class = long_resume;
+ break;
+ case bp_step_resume:
+ if (bs->stop)
+ {
+ bs_class = step_resume;
+ }
+ else
+ /* It is for the wrong frame. */
+ bs_class = bp_nostop;
+ break;
+ case bp_through_sigtramp:
+ bs_class = through_sig;
+ break;
+ case bp_watchpoint_scope:
+ bs_class = bp_nostop;
+ break;
+ case bp_shlib_event:
+ bs_class = shlib_event;
+ break;
+ case bp_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. */
+ bs_class = bp_silent;
+ retval.call_dummy = 1;
+ break;
+ }
+ current_action = table[(int) bs_class][(int) current_action];
+ }
+ retval.main_action = current_action;
+ return retval;
+}
+
+/* Nonzero if we should step constantly (e.g. watchpoints on machines
+ without hardware support). This isn't related to a specific bpstat,
+ just to things like whether watchpoints are set. */
+
+int
+bpstat_should_step (void)
+{
+ struct breakpoint *b;
+ ALL_BREAKPOINTS (b)
+ if (b->enable == enabled && b->type == bp_watchpoint)
+ 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)
+ xfree (ep->triggered_dll_pathname);
+ if (ep->type == bp_catch_load)
+ dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (
+ PIDGET (inferior_ptid));
+ else
+ dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (
+ PIDGET (inferior_ptid));
+#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 (__FILE__, __LINE__,
+ "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)
+ {
+ if (TARGET_ADDR_BIT <= 32)
+ strcat (wrap_indent, " ");
+ else
+ strcat (wrap_indent, " ");
+ }
+ switch (b->type)
+ {
+ case bp_none:
+ internal_error (__FILE__, __LINE__,
+ "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)
+ {
+ char *tmp;
+
+ annotate_field (4);
+
+ if (TARGET_ADDR_BIT <= 32)
+ tmp = longest_local_hex_string_custom (b->address
+ & (CORE_ADDR) 0xffffffff,
+ "08l");
+ else
+ tmp = longest_local_hex_string_custom (b->address, "016l");
+
+ printf_filtered ("%s ", tmp);
+ }
+ 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 (int bnum, int allflag)
+{
+ register struct breakpoint *b;
+ CORE_ADDR last_addr = (CORE_ADDR) -1;
+ int found_a_breakpoint = 0;
+
+#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. */
+ if (!allflag
+ && b->type != bp_breakpoint
+ && b->type != bp_catch_load
+ && b->type != bp_catch_unload
+ && b->type != bp_catch_fork
+ && b->type != bp_catch_vfork
+ && b->type != bp_catch_exec
+ && b->type != bp_catch_catch
+ && b->type != bp_catch_throw
+ && b->type != bp_hardware_breakpoint
+ && b->type != bp_watchpoint
+ && b->type != bp_read_watchpoint
+ && b->type != bp_access_watchpoint
+ && b->type != bp_hardware_watchpoint)
+ continue;
+
+ if (!found_a_breakpoint++)
+ {
+ 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)
+ {
+ annotate_field (4);
+ if (TARGET_ADDR_BIT <= 32)
+ ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */
+ else
+ ui_out_table_header (uiout, 18, ui_left, "Address"); /* 5 */
+ }
+ 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);
+ if (TARGET_ADDR_BIT <= 32)
+ printf_filtered ("Address ");
+ else
+ printf_filtered ("Address ");
+ }
+ annotate_field (5);
+ printf_filtered ("What\n");
+#endif /* UI_OUT */
+ annotate_breakpoints_table ();
+ }
+
+ print_one_breakpoint (b, &last_addr);
+ }
+
+ if (!found_a_breakpoint)
+ {
+#ifdef UI_OUT
+ if (bnum == -1)
+ ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n");
+ else
+ 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);
+ }
+
+#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 (char *bnum_exp, int from_tty)
+{
+ int bnum = -1;
+
+ if (bnum_exp)
+ bnum = parse_and_eval_long (bnum_exp);
+
+ breakpoint_1 (bnum, 0);
+}
+
+/* ARGSUSED */
+static void
+maintenance_info_breakpoints (char *bnum_exp, int from_tty)
+{
+ int bnum = -1;
+
+ if (bnum_exp)
+ bnum = parse_and_eval_long (bnum_exp);
+
+ breakpoint_1 (bnum, 1);
+}
+
+/* Print a message describing any breakpoints set at PC. */
+
+static void
+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 ||
+ 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, 1, gdb_stdout);
+ printf_filtered (".\n");
+ }
+}
+\f
+/* Set the default place to put a breakpoint
+ for the `break' command with no arguments. */
+
+void
+set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab,
+ int line)
+{
+ default_breakpoint_valid = valid;
+ default_breakpoint_address = addr;
+ default_breakpoint_symtab = symtab;
+ default_breakpoint_line = line;
+}
+
+/* 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.
+ If we have a permanent breakpoint at ADDRESS, make that one
+ the official one, and the rest as duplicates. */
+
+static void
+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->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 (__FILE__, __LINE__,
+ "allegedly permanent breakpoint is not "
+ "actually inserted");
+
+ ALL_BREAKPOINTS (b)
+ if (b != perm_bp)
+ {
+ if (b->inserted)
+ internal_error (__FILE__, __LINE__,
+ "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.
+ Takes as args the three things that every breakpoint must have.
+ Returns the breakpoint object so caller can set other things.
+ Does not set the breakpoint number!
+ Does not print anything.
+
+ ==> This routine should not be called if there is a chance of later
+ error(); otherwise it leaves a bogus breakpoint on the chain. Validate
+ your arguments BEFORE calling this routine! */
+
+struct breakpoint *
+set_raw_breakpoint (struct symtab_and_line sal)
+{
+ register struct breakpoint *b, *b1;
+
+ b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint));
+ memset (b, 0, sizeof (*b));
+ b->address = sal.pc;
+ if (sal.symtab == NULL)
+ b->source_file = NULL;
+ else
+ b->source_file = savestring (sal.symtab->filename,
+ strlen (sal.symtab->filename));
+ b->section = sal.section;
+ b->language = current_language->la_language;
+ b->input_radix = input_radix;
+ b->thread = -1;
+ b->line_number = sal.line;
+ b->enable = enabled;
+ b->next = 0;
+ b->silent = 0;
+ b->ignore_count = 0;
+ b->commands = NULL;
+ b->frame = 0;
+ b->dll_pathname = NULL;
+ b->triggered_dll_pathname = NULL;
+ b->forked_inferior_pid = 0;
+ b->exec_pathname = NULL;
+
+ /* Add this breakpoint to the end of the chain
+ so that a list of breakpoints will come out in order
+ of increasing numbers. */
+
+ b1 = breakpoint_chain;
+ if (b1 == 0)
+ breakpoint_chain = b;
+ else
+ {
+ while (b1->next)
+ b1 = b1->next;
+ b1->next = b;
+ }
+
+ check_duplicates (sal.pc, sal.section);
+ breakpoints_changed ();
+
+ return b;
+}
+
+
+/* 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;
+
+ INIT_SAL (&sal); /* initialize to zeroes */
+ if (func_name != NULL)
+ {
+ struct minimal_symbol *m;
+
+ m = lookup_minimal_symbol_text (func_name, NULL,
+ (struct objfile *) NULL);
+ if (m)
+ sal.pc = SYMBOL_VALUE_ADDRESS (m);
+ else
+ 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 = xstrdup (func_name);
+ b->number = internal_breakpoint_number--;
+}
+
+#endif /* #ifdef GET_LONGJMP_TARGET */
+
+/* Call this routine when stepping and nexting to enable a breakpoint
+ if we do a longjmp(). When we hit that breakpoint, call
+ set_longjmp_resume_breakpoint() to figure out where we are going. */
+
+void
+enable_longjmp_breakpoint (void)
+{
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ if (b->type == bp_longjmp)
+ {
+ b->enable = enabled;
+ check_duplicates (b->address, b->section);
+ }
+}
+
+void
+disable_longjmp_breakpoint (void)
+{
+ register struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ if (b->type == bp_longjmp
+ || b->type == bp_longjmp_resume)
+ {
+ b->enable = disabled;
+ check_duplicates (b->address, b->section);
+ }
+}
+
+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 = xstrdup (addr_string);
+
+ return b;
+}
+
+void
+remove_thread_event_breakpoints (void)
+{
+ struct breakpoint *b, *temp;
+
+ ALL_BREAKPOINTS_SAFE (b, temp)
+ if (b->type == bp_thread_event)
+ delete_breakpoint (b);
+}
+
+#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 *
+create_solib_event_breakpoint (CORE_ADDR address)
+{
+ struct breakpoint *b;
+ struct symtab_and_line sal;
+
+ INIT_SAL (&sal); /* initialize to zeroes */
+ sal.pc = address;
+ sal.section = find_pc_overlay (sal.pc);
+ b = set_raw_breakpoint (sal);
+ b->number = internal_breakpoint_number--;
+ b->disposition = donttouch;
+ b->type = bp_shlib_event;
+
+ return b;
+}
+
+/* Disable any breakpoints that are on code in shared libraries. Only
+ apply to enabled breakpoints, disabled ones can just stay disabled. */
+
+void
+disable_breakpoints_in_shlibs (int silent)
+{
+ struct breakpoint *b;
+ int disabled_shlib_breaks = 0;
+
+ /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
+ ALL_BREAKPOINTS (b)
+ {
+#if defined (PC_SOLIB)
+ if (((b->type == bp_breakpoint) ||
+ (b->type == bp_hardware_breakpoint)) &&
+ b->enable == enabled &&
+ !b->duplicate &&
+ PC_SOLIB (b->address))
+ {
+ 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
+ }
+}
+
+/* Try to reenable any breakpoints in shared libraries. */
+void
+re_enable_breakpoints_in_shlibs (void)
+{
+ struct breakpoint *b;
+
+ ALL_BREAKPOINTS (b)
+ if (b->enable == shlib_disabled)
+ {
+ char buf[1];
+
+ /* Do not reenable the breakpoint if the shared library
+ is still not mapped in. */
+ if (target_read_memory (b->address, buf, 1) == 0)
+ b->enable = enabled;
+ }
+}
+
+#endif
+
+static void
+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 cleanup *old_chain;
+ struct cleanup *canonical_strings_chain = NULL;
+ char *addr_start = hookname;
+ char *addr_end = NULL;
+ char **canonical = (char **) NULL;
+ int thread = -1; /* All threads. */
+
+ /* Set a breakpoint on the specified hook. */
+ sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical);
+ addr_end = hookname;
+
+ if (sals.nelts == 0)
+ {
+ warning ("Unable to set a breakpoint on dynamic linker callback.");
+ warning ("Suggest linking with /opt/langtools/lib/end.o.");
+ warning ("GDB will be unable to track shl_load/shl_unload calls");
+ return;
+ }
+ if (sals.nelts != 1)
+ {
+ warning ("Unable to set unique breakpoint on dynamic linker callback.");
+ warning ("GDB will be unable to track shl_load/shl_unload calls");
+ return;
+ }
+
+ /* Make sure that all storage allocated in decode_line_1 gets freed
+ in case the following errors out. */
+ old_chain = make_cleanup (xfree, sals.sals);
+ if (canonical != (char **) NULL)
+ {
+ make_cleanup (xfree, canonical);
+ canonical_strings_chain = make_cleanup (null_cleanup, 0);
+ if (canonical[0] != NULL)
+ make_cleanup (xfree, canonical[0]);
+ }
+
+ resolve_sal_pc (&sals.sals[0]);
+
+ /* Remove the canonical strings from the cleanup, they are needed below. */
+ if (canonical != (char **) NULL)
+ discard_cleanups (canonical_strings_chain);
+
+ b = set_raw_breakpoint (sals.sals[0]);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ?
+ NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+
+ if (canonical != (char **) NULL && canonical[0] != NULL)
+ b->addr_string = canonical[0];
+ else if (addr_start)
+ b->addr_string = savestring (addr_start, addr_end - addr_start);
+
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+
+ if (dll_pathname == NULL)
+ b->dll_pathname = NULL;
+ else
+ {
+ b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1);
+ strcpy (b->dll_pathname, dll_pathname);
+ }
+ b->type = bp_kind;
+
+ mention (b);
+ do_cleanups (old_chain);
+}
+
+void
+create_solib_load_event_breakpoint (char *hookname, int tempflag,
+ char *dll_pathname, char *cond_string)
{
- bpstat bs;
+ solib_load_unload_1 (hookname, tempflag, dll_pathname,
+ cond_string, bp_catch_load);
+}
- bs = (bpstat) xmalloc (sizeof (*bs));
- cbs->next = bs;
- bs->breakpoint_at = b;
- /* If the condition is false, etc., don't do the commands. */
- bs->commands = NULL;
- bs->momentary = b->disposition == delete;
- bs->old_val = NULL;
- return bs;
+void
+create_solib_unload_event_breakpoint (char *hookname, int tempflag,
+ char *dll_pathname, char *cond_string)
+{
+ solib_load_unload_1 (hookname,tempflag, dll_pathname,
+ cond_string, bp_catch_unload);
}
-/* 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:
+static void
+create_fork_vfork_event_catchpoint (int tempflag, char *cond_string,
+ enum bptype bp_kind)
+{
+ struct symtab_and_line sal;
+ struct breakpoint *b;
+ int thread = -1; /* All threads. */
- if we don't understand the stop, the result is a null pointer.
+ INIT_SAL (&sal);
+ sal.pc = 0;
+ sal.symtab = NULL;
+ sal.line = 0;
- if we understand why we stopped, the result is not null, and
- the first element of the chain contains summary "stop" and
- "print" flags for the whole chain.
+ b = set_raw_breakpoint (sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ?
+ NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+ b->addr_string = NULL;
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+ b->forked_inferior_pid = 0;
- Each element of the chain refers to a particular breakpoint or
- watchpoint at which we have stopped. (We may have stopped for
- several reasons.)
+ b->type = bp_kind;
- Each element of the chain has valid next, breakpoint_at,
- commands, FIXME??? fields.
+ mention (b);
+}
- */
+void
+create_fork_event_catchpoint (int tempflag, char *cond_string)
+{
+ create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork);
+}
-
-bpstat
-bpstat_stop_status (pc, frame_address)
- CORE_ADDR *pc;
- FRAME_ADDR frame_address;
+void
+create_vfork_event_catchpoint (int tempflag, char *cond_string)
{
- register struct breakpoint *b;
- int stop = 0;
- int print = 0;
- 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];
- /* Pointer to the last thing in the chain currently. */
- bpstat bs = root_bs;
+ create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork);
+}
- /* Get the address where the breakpoint would have been. */
- bp_addr = *pc - DECR_PC_AFTER_BREAK;
+void
+create_exec_event_catchpoint (int tempflag, char *cond_string)
+{
+ struct symtab_and_line sal;
+ struct breakpoint *b;
+ int thread = -1; /* All threads. */
- ALL_BREAKPOINTS (b)
- {
- int this_bp_stop;
- int this_bp_print;
+ INIT_SAL (&sal);
+ sal.pc = 0;
+ sal.symtab = NULL;
+ sal.line = 0;
- if (b->enable == disabled)
- continue;
+ 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;
- if (b->type != bp_watchpoint && b->address != bp_addr)
- continue;
+ b->type = bp_catch_exec;
- /* Come here if it's a watchpoint, or if the break address matches */
+ mention (b);
+}
- bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */
+static int
+hw_breakpoint_used_count (void)
+{
+ register struct breakpoint *b;
+ int i = 0;
- this_bp_stop = 1;
- this_bp_print = 1;
+ ALL_BREAKPOINTS (b)
+ {
+ if (b->type == bp_hardware_breakpoint && b->enable == enabled)
+ i++;
+ }
- if (b->type == bp_watchpoint)
- {
- int within_current_scope;
- if (b->exp_valid_block != NULL)
- within_current_scope =
- contained_in (get_selected_block (), b->exp_valid_block);
- else
- within_current_scope = 1;
+ return i;
+}
- 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. */
+static int
+hw_watchpoint_used_count (enum bptype type, int *other_type_used)
+{
+ register struct breakpoint *b;
+ int i = 0;
- value mark = value_mark ();
- value new_val = evaluate_expression (b->exp);
- if (!value_equal (b->val, new_val))
- {
- release_value (new_val);
- value_free_to_mark (mark);
- bs->old_val = b->val;
- b->val = new_val;
- /* We will stop here */
- }
- else
- {
- /* Nothing changed, don't do anything. */
- value_free_to_mark (mark);
- continue;
- /* We won't stop here */
- }
- }
- 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). */
- b->enable = disabled;
- printf_filtered ("\
-Watchpoint %d disabled because the program has left the block in\n\
-which its expression is valid.\n", b->number);
- /* We won't stop here */
- /* FIXME, maybe we should stop here!!! */
- continue;
- }
- }
-#if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS)
- else
- real_breakpoint = 1;
-#endif
+ *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;
+}
- if (b->frame && b->frame != frame_address)
- this_bp_stop = 0;
- else
- {
- int value_is_zero;
+/* Call this after hitting the longjmp() breakpoint. Use this to set
+ a new breakpoint at the target of the jmp_buf.
- 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");
- /* FIXME-someday, should give breakpoint # */
- free_all_values ();
- }
- if (b->cond && value_is_zero)
- {
- this_bp_stop = 0;
- }
- else if (b->ignore_count > 0)
- {
- b->ignore_count--;
- this_bp_stop = 0;
- }
- else
- {
- /* We will stop here */
- if (b->disposition == disable)
- b->enable = disabled;
- bs->commands = b->commands;
- if (b->silent)
- this_bp_print = 0;
- if (bs->commands && !strcmp ("silent", bs->commands->line))
- {
- bs->commands = bs->commands->next;
- this_bp_print = 0;
- }
- }
- }
- if (this_bp_stop)
- stop = 1;
- if (this_bp_print)
- print = 1;
- }
+ FIXME - This ought to be done by setting a temporary breakpoint
+ that gets deleted automatically... */
- bs->next = NULL; /* Terminate the chain */
- bs = root_bs->next; /* Re-grab the head of the chain */
- if (bs)
+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)
{
- bs->stop = stop;
- bs->print = print;
-#if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS)
- if (real_breakpoint)
- {
- *pc = bp_addr;
-#if defined (SHIFT_INST_REGS)
- {
- CORE_ADDR pc = read_register (PC_REGNUM);
- CORE_ADDR npc = read_register (NPC_REGNUM);
- if (pc != npc)
- {
- write_register (NNPC_REGNUM, npc);
- write_register (NPC_REGNUM, pc);
- }
- }
-#else /* No SHIFT_INST_REGS. */
- write_pc (bp_addr);
-#endif /* No SHIFT_INST_REGS. */
- }
-#endif /* DECR_PC_AFTER_BREAK != 0. */
+ b->address = pc;
+ b->enable = enabled;
+ if (frame != NULL)
+ b->frame = frame->frame;
+ else
+ b->frame = 0;
+ check_duplicates (b->address, b->section);
+ return;
}
- return bs;
}
-/* Nonzero if we should step constantly (e.g. watchpoints on machines
- without hardware support). This isn't related to a specific bpstat,
- just to things like whether watchpoints are set. */
-
-int
-bpstat_should_step ()
+void
+disable_watchpoints_before_interactive_call_start (void)
{
struct breakpoint *b;
+
ALL_BREAKPOINTS (b)
- if (b->enable == enabled && b->type == bp_watchpoint)
- return 1;
- return 0;
+ {
+ 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);
+ }
+ }
}
-\f
-/* 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, type)
- int bnum;
- enum bptype type;
+void
+enable_watchpoints_after_interactive_call_stop (void)
{
- register struct breakpoint *b;
- register struct command_line *l;
- register struct symbol *sym;
- CORE_ADDR last_addr = (CORE_ADDR)-1;
- int found_a_breakpoint = 0;
- static char *bptypes[] = {"breakpoint", "until", "finish", "watchpoint",
- "longjmp", "longjmp resume"};
- static char *bpdisps[] = {"del", "dis", ""};
- static char bpenables[] = "ny";
+ struct breakpoint *b;
- if (!breakpoint_chain)
- {
- printf_filtered ("No breakpoints or watchpoints.\n");
- return;
- }
-
ALL_BREAKPOINTS (b)
- if (bnum == -1
- || bnum == b->number)
+ {
+ 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))
{
- if (!found_a_breakpoint++)
- printf_filtered ("Num Type Disp Enb %sWhat\n",
- addressprint ? "Address " : "");
-
- printf_filtered ("%-3d %-10s %-4s %-3c ",
- b->number,
- bptypes[b->type],
- bpdisps[b->disposition],
- bpenables[b->enable]);
- switch (b->type)
- {
- case bp_watchpoint:
- print_expression (b->exp, stdout);
- break;
- case bp_breakpoint:
- if (addressprint)
- printf_filtered ("%s ", local_hex_string_custom(b->address, "08"));
+ b->enable = enabled;
+ check_duplicates (b->address, b->section);
+ }
+ }
+}
- last_addr = b->address;
- if (b->symtab)
- {
- sym = find_pc_function (b->address);
- if (sym)
- {
- fputs_filtered ("in ", stdout);
- fputs_demangled (SYMBOL_NAME (sym), stdout, 1);
- fputs_filtered (" at ", stdout);
- }
- fputs_filtered (b->symtab->filename, stdout);
- printf_filtered (":%d", b->line_number);
- }
- else
- print_address_symbolic (b->address, stdout, demangle, " ");
- }
- printf_filtered ("\n");
+/* Set a breakpoint that will evaporate an end of command
+ at address specified by SAL.
+ Restrict it to frame FRAME if FRAME is nonzero. */
- if (b->frame)
- printf_filtered ("\tstop only in stack frame at %s\n",
- local_hex_string(b->frame));
- if (b->cond)
- {
- printf_filtered ("\tstop only if ");
- print_expression (b->cond, stdout);
- printf_filtered ("\n");
- }
- if (b->ignore_count)
- printf_filtered ("\tignore next %d hits\n", b->ignore_count);
- if ((l = b->commands))
- while (l)
- {
- fputs_filtered ("\t", stdout);
- fputs_filtered (l->line, stdout);
- fputs_filtered ("\n", stdout);
- l = l->next;
- }
- }
+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 (!found_a_breakpoint
- && bnum != -1)
- printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum);
- 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);
+ /* If we're debugging a multi-threaded program, then we
+ want momentary breakpoints to be active in only a
+ single thread of control. */
+ if (in_thread_list (inferior_ptid))
+ b->thread = pid_to_thread_id (inferior_ptid);
+
+ return b;
}
+\f
+
+/* Tell the user we have just set a breakpoint B. */
-/* ARGSUSED */
static void
-breakpoints_info (bnum_exp, from_tty)
- char *bnum_exp;
- int from_tty;
+mention (struct breakpoint *b)
{
- int bnum = -1;
+ int say_where = 0;
+#ifdef UI_OUT
+ struct cleanup *old_chain;
+ struct ui_stream *stb;
- if (bnum_exp)
- bnum = parse_and_eval_address (bnum_exp);
+ 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;
- breakpoint_1 (bnum, 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:
+ 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. */
-/* ARGSUSED */
static void
-watchpoints_info (bnum_exp, from_tty)
- char *bnum_exp;
- int from_tty;
+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)
{
- int bnum = -1;
+ 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.");
+ }
- if (bnum_exp)
- bnum = parse_and_eval_address (bnum_exp);
+ /* 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];
- breakpoint_1 (bnum, bp_watchpoint);
+ 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);
+ }
+ }
}
-/* Print a message describing any breakpoints set at PC. */
+/* 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. */
-static void
-describe_other_breakpoints (pc)
- register CORE_ADDR pc;
+void
+parse_breakpoint_sals (char **address,
+ struct symtabs_and_lines *sals,
+ char ***addr_string)
{
- register int others = 0;
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->address == pc)
- others++;
- if (others > 0)
+ 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])))
{
- printf ("Note: breakpoint%s ", (others > 1) ? "s" : "");
- ALL_BREAKPOINTS (b)
- if (b->address == pc)
- {
- others--;
- printf ("%d%s%s ",
- b->number,
- (b->enable == disabled) ? " (disabled)" : "",
- (others > 1) ? "," : ((others == 1) ? " and" : ""));
- }
- printf ("also set at pc %s.\n", local_hex_string(pc));
+ if (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);
+ }
}
}
-\f
-/* Set the default place to put a breakpoint
- for the `break' command with no arguments. */
+
+
+/* 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
-set_default_breakpoint (valid, addr, symtab, line)
- int valid;
- CORE_ADDR addr;
- struct symtab *symtab;
- int line;
-{
- default_breakpoint_valid = valid;
- default_breakpoint_address = addr;
- default_breakpoint_symtab = symtab;
- default_breakpoint_line = line;
+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);
+ }
+ }
}
-/* 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. */
+/* 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
-check_duplicates (address)
- CORE_ADDR address;
+break_command_1 (char *arg, int flag, int from_tty)
{
- register struct breakpoint *b;
- register int count = 0;
+ 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;
- if (address == 0) /* Watchpoints are uninteresting */
+ 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;
- ALL_BREAKPOINTS (b)
- if (b->enable != disabled && b->address == address)
- {
- count++;
- b->duplicate = count > 1;
- }
-}
+ /* Create a chain of things that always need to be cleaned up. */
+ old_chain = make_cleanup (null_cleanup, 0);
-/* Low level routine to set a breakpoint.
- Takes as args the three things that every breakpoint must have.
- Returns the breakpoint object so caller can set other things.
- Does not set the breakpoint number!
- Does not print anything.
+ /* Make sure that all storage allocated to SALS gets freed. */
+ make_cleanup (xfree, sals.sals);
- ==> This routine should not be called if there is a chance of later
- error(); otherwise it leaves a bogus breakpoint on the chain. Validate
- your arguments BEFORE calling this routine! */
+ /* Cleanup the addr_string array but not its contents. */
+ make_cleanup (xfree, addr_string);
-static struct breakpoint *
-set_raw_breakpoint (sal)
- struct symtab_and_line sal;
-{
- register struct breakpoint *b, *b1;
+ /* Allocate space for all the cond expressions. */
+ cond = xcalloc (sals.nelts, sizeof (struct expression *));
+ make_cleanup (xfree, cond);
- b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint));
- bzero (b, sizeof *b);
- b->address = sal.pc;
- b->symtab = sal.symtab;
- b->line_number = sal.line;
- b->enable = enabled;
- b->next = 0;
- b->silent = 0;
- b->ignore_count = 0;
- b->commands = NULL;
- b->frame = 0;
+ /* Allocate space for all the cond strings. */
+ cond_string = xcalloc (sals.nelts, sizeof (char **));
+ make_cleanup (xfree, cond_string);
- /* Add this breakpoint to the end of the chain
- so that a list of breakpoints will come out in order
- of increasing numbers. */
+ /* ----------------------------- 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);
- b1 = breakpoint_chain;
- if (b1 == 0)
- breakpoint_chain = b;
- else
+ /* 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++)
{
- while (b1->next)
- b1 = b1->next;
- b1->next = b;
+ if (addr_string[i] != NULL)
+ make_cleanup (xfree, addr_string[i]);
}
- check_duplicates (sal.pc);
+ /* Resolve all line numbers to PC's and verify that the addresses
+ are ok for the target. */
+ breakpoint_sals_to_pc (&sals, addr_start);
- return b;
+ /* 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 (xfree, cond[i]);
+ cond_end = tok;
+ cond_string[i] = savestring (cond_start, cond_end - cond_start);
+ make_cleanup (xfree, 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);
}
-struct breakpoint *longjmp_breakpoint = NULL;
-struct breakpoint *_longjmp_breakpoint = NULL;
-struct breakpoint *siglongjmp_breakpoint = NULL;
-struct breakpoint *longjmp_resume_breakpoint = NULL;
+/* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
+ linenum or *address) with COND and IGNORE_COUNT. */
-static void
-create_longjmp_breakpoint_1(func_name, bpt)
- char *func_name;
- struct breakpoint **bpt;
+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;
- struct symtab_and_line sal;
- struct breakpoint *b;
+ char **addr_string;
+ char **cond_string;
- if (*bpt != NULL)
- {
- delete_breakpoint(*bpt);
- *bpt = NULL;
- }
+ char *address_end;
- if (func_name != NULL)
- {
- struct minimal_symbol *m;
+ /* 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);
- m = lookup_minimal_symbol(func_name, (struct objfile *)NULL);
- if (m)
- sal.pc = m->address;
- else
- return;
- }
- else
- sal.pc = 0;
+ if (!sals.nelts)
+ return GDB_RC_NONE;
- sal.symtab = NULL;
- sal.line = 0;
- if (*bpt != NULL)
- b = *bpt;
- else
- b = set_raw_breakpoint(sal);
+ /* Create a chain of things at always need to be cleaned up. */
+ old_chain = make_cleanup (null_cleanup, 0);
- if (!b) return;
+ /* Always have a addr_string array, even if it is empty. */
+ make_cleanup (xfree, addr_string);
- b->type = bp_longjmp;
- b->disposition = donttouch;
- b->enable = disabled;
- b->silent = 1;
- *bpt = b;
-}
+ /* Make sure that all storage allocated to SALS gets freed. */
+ make_cleanup (xfree, sals.sals);
-/* Call this routine each time we read a new executable or symbol table
- file. */
+ /* Allocate space for all the cond expressions. */
+ cond = xcalloc (sals.nelts, sizeof (struct expression *));
+ make_cleanup (xfree, cond);
-#ifdef GET_LONGJMP_TARGET
-void
-create_longjmp_breakpoint()
-{
- create_longjmp_breakpoint_1("longjmp", &longjmp_breakpoint);
- create_longjmp_breakpoint_1("_longjmp", &_longjmp_breakpoint);
- create_longjmp_breakpoint_1("siglongjmp", &siglongjmp_breakpoint);
+ /* Allocate space for all the cond strings. */
+ cond_string = xcalloc (sals.nelts, sizeof (char **));
+ make_cleanup (xfree, 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);
- if ((longjmp_breakpoint || _longjmp_breakpoint || siglongjmp_breakpoint)
- && !longjmp_resume_breakpoint)
+ /* 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++)
{
- create_longjmp_breakpoint_1(NULL, &longjmp_resume_breakpoint);
- if (longjmp_resume_breakpoint)
- longjmp_resume_breakpoint->type = bp_longjmp_resume;
+ if (addr_string[i] != NULL)
+ make_cleanup (xfree, addr_string[i]);
}
-}
-#else
-void
-create_longjmp_breakpoint()
-{
-}
-#endif
-
-/* 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()
-{
- if (longjmp_breakpoint)
- longjmp_breakpoint->enable = enabled;
- if (_longjmp_breakpoint)
- _longjmp_breakpoint->enable = enabled;
- if (siglongjmp_breakpoint)
- siglongjmp_breakpoint->enable = enabled;
-}
+ /* 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);
-void
-disable_longjmp_breakpoint()
-{
- if (longjmp_breakpoint)
- longjmp_breakpoint->enable = disabled;
- if (_longjmp_breakpoint)
- _longjmp_breakpoint->enable = disabled;
- if (siglongjmp_breakpoint)
- siglongjmp_breakpoint->enable = disabled;
- if (longjmp_resume_breakpoint)
- longjmp_resume_breakpoint->enable = disabled;
-}
+ /* Resolve all line numbers to PC's. */
+ breakpoint_sals_to_pc (&sals, args->address);
-/* Call this after hitting the longjmp() breakpoint. Use this to set a new
- breakpoint at the target of the jmp_buf.
-*/
+ /* 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 (xfree, cond[i]);
+ cond_string[i] = xstrdup (args->condition);
+ }
+ }
-void
-set_longjmp_resume_breakpoint(pc, frame)
- CORE_ADDR pc;
- FRAME frame;
-{
- longjmp_resume_breakpoint->address = pc;
- longjmp_resume_breakpoint->enable = enabled;
- if (frame != NULL)
- longjmp_resume_breakpoint->frame = FRAME_FP(frame);
- else
- longjmp_resume_breakpoint->frame = 0;
+ 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;
}
-/* Set a breakpoint that will evaporate an end of command
- at address specified by SAL.
- Restrict it to frame FRAME if FRAME is nonzero. */
-
-struct breakpoint *
-set_momentary_breakpoint (sal, frame, type)
- struct symtab_and_line sal;
- FRAME frame;
- enum bptype type;
+enum gdb_rc
+gdb_breakpoint (char *address, char *condition,
+ int hardwareflag, int tempflag,
+ int thread, int ignore_count)
{
- register struct breakpoint *b;
- b = set_raw_breakpoint (sal);
- b->type = type;
- b->enable = enabled;
- b->disposition = donttouch;
- b->frame = (frame ? FRAME_FP (frame) : 0);
- return b;
+ 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);
}
-#if 0
-void
-clear_momentary_breakpoints ()
-{
- register struct breakpoint *b;
- ALL_BREAKPOINTS (b)
- if (b->disposition == delete)
- {
- delete_breakpoint (b);
- break;
- }
-}
-#endif
-\f
-/* Tell the user we have just set a breakpoint B. */
+
static void
-mention (b)
- struct breakpoint *b;
+break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty)
{
- switch (b->type)
+ struct frame_info *frame;
+ CORE_ADDR low, high, selected_pc = 0;
+ char *extra_args = NULL;
+ char *level_arg;
+ char *addr_string;
+ int extra_args_len = 0, if_arg = 0;
+
+ if (!arg ||
+ (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
{
- case bp_watchpoint:
- printf_filtered ("Watchpoint %d: ", b->number);
- print_expression (b->exp, stdout);
- break;
- case bp_breakpoint:
- printf_filtered ("Breakpoint %d at %s", b->number,
- local_hex_string(b->address));
- if (b->symtab)
- printf_filtered (": file %s, line %d.",
- b->symtab->filename, b->line_number);
- }
- printf_filtered ("\n");
-}
-
-#if 0
-/* Nobody calls this currently. */
-/* Set a breakpoint from a symtab and line.
- If TEMPFLAG is nonzero, it is a temporary breakpoint.
- ADDR_STRING is a malloc'd string holding the name of where we are
- setting the breakpoint. This is used later to re-set it after the
- program is relinked and symbols are reloaded.
- Print the same confirmation messages that the breakpoint command prints. */
-void
-set_breakpoint (s, line, tempflag, addr_string)
- struct symtab *s;
- int line;
- int tempflag;
- char *addr_string;
-{
- register struct breakpoint *b;
- struct symtab_and_line sal;
-
- sal.symtab = s;
- sal.line = line;
- sal.pc = 0;
- resolve_sal_pc (&sal); /* Might error out */
- describe_other_breakpoints (sal.pc);
+ 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);
+ }
- 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;
+ 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);
+ }
- mention (b);
+ 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);
+ xfree (addr_string);
+ }
+ else
+ error ("No function contains the specified address");
+ }
+ else
+ error ("Unable to set breakpoint at procedure exit");
}
-#endif /* 0 */
-\f
-/* Set a breakpoint according to ARG (function, linenum or *address)
- and make it temporary if TEMPFLAG is nonzero. */
+
static void
-break_command_1 (arg, tempflag, from_tty)
- char *arg;
- int tempflag, from_tty;
+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;
- 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;
- /* Pointers in arg to the start, and one past the end,
- of the address part. */
- char *addr_start = NULL;
- char *addr_end;
-
- int i;
-
- sals.sals = NULL;
- sals.nelts = 0;
-
- sal.line = sal.pc = sal.end = 0;
- sal.symtab = 0;
-
- /* If no arg given, or if first arg is 'if ', use the default breakpoint. */
+ struct cleanup *old_chain;
+ char *extra_args = NULL;
+ int extra_args_len = 0;
+ int i, if_arg = 0;
- if (!arg || (arg[0] == 'i' && arg[1] == 'f'
- && (arg[2] == ' ' || arg[2] == '\t')))
+ if (!arg ||
+ (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
{
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;
+ 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_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);
- else
- sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0);
-
- addr_end = arg;
+ addr_string = (char *) xmalloc (strlen (arg) + 1);
+ strcpy (addr_string, arg);
}
-
- if (! sals.nelts)
- return;
- /* 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++)
+ if (if_arg)
{
- resolve_sal_pc (&sals.sals[i]);
-
- while (arg && *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)
{
- if (arg[0] == 'i' && arg[1] == 'f'
- && (arg[2] == ' ' || arg[2] == '\t'))
- {
- arg += 2;
- cond_start = arg;
- cond = parse_exp_1 (&arg, block_for_pc (sals.sals[i].pc), 0);
- cond_end = arg;
- }
- else
- error ("Junk at end of arguments.");
+ extra_args++;
+ extra_args_len = strlen (extra_args);
}
}
- /* Now set all the breakpoints. */
- for (i = 0; i < sals.nelts; i++)
- {
- sal = sals.sals[i];
-
- if (from_tty)
- describe_other_breakpoints (sal.pc);
+ sals.sals = NULL;
+ sals.nelts = 0;
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->type = bp_breakpoint;
- b->cond = cond;
-
- 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;
+ beg_addr_string = addr_string;
+ sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0,
+ (char ***) NULL);
- mention (b);
+ xfree (beg_addr_string);
+ old_chain = make_cleanup (xfree, 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);
+ xfree (break_string);
+ }
+ else
+ error ("No function contains the specified address");
}
-
if (sals.nelts > 1)
{
- printf ("Multiple breakpoints were set.\n");
- printf ("Use the \"delete\" command to delete unwanted breakpoints.\n");
+ warning ("Multiple breakpoints were set.\n");
+ warning ("Use the \"delete\" command to delete unwanted breakpoints.");
}
- free (sals.sals);
+ do_cleanups (old_chain);
}
+
/* Helper function for break_command_1 and disassemble_command. */
void
-resolve_sal_pc (sal)
- struct symtab_and_line *sal;
+resolve_sal_pc (struct symtab_and_line *sal)
{
CORE_ADDR pc;
- if (sal->pc == 0 && sal->symtab != 0)
+ if (sal->pc == 0 && sal->symtab != NULL)
{
- pc = find_line_pc (sal->symtab, sal->line);
- if (pc == 0)
+ if (!find_line_pc (sal->symtab, sal->line, &pc))
error ("No line %d in file \"%s\".",
sal->line, sal->symtab->filename);
sal->pc = pc;
}
+
+ if (sal->section == 0 && sal->symtab != NULL)
+ {
+ struct blockvector *bv;
+ struct block *b;
+ struct symbol *sym;
+ int index;
+
+ bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab);
+ if (bv != NULL)
+ {
+ b = BLOCKVECTOR_BLOCK (bv, index);
+ sym = block_function (b);
+ if (sym != NULL)
+ {
+ fixup_symbol_section (sym, sal->symtab->objfile);
+ sal->section = SYMBOL_BFD_SECTION (sym);
+ }
+ else
+ {
+ /* It really is worthwhile to have the section, so we'll just
+ have to look harder. This case can be executed if we have
+ line numbers but no functions (as can happen in assembly
+ source). */
+
+ struct minimal_symbol *msym;
+
+ msym = lookup_minimal_symbol_by_pc (sal->pc);
+ if (msym)
+ sal->section = SYMBOL_BFD_SECTION (msym);
+ }
+ }
+ }
}
void
-break_command (arg, from_tty)
- char *arg;
- int from_tty;
+break_command (char *arg, int from_tty)
{
break_command_1 (arg, 0, from_tty);
}
static void
-tbreak_command (arg, from_tty)
- char *arg;
- int from_tty;
+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, 1, 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 (arg, from_tty)
- char *arg;
- int from_tty;
+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;
+ 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 */
- sal.pc = 0;
- sal.symtab = NULL;
- sal.line = 0;
-
/* Parse arguments. */
innermost_block = NULL;
- exp = parse_expression (arg);
+ exp_start = arg;
+ exp = parse_exp_1 (&arg, 0, 0);
+ exp_end = arg;
exp_valid_block = innermost_block;
+ mark = value_mark ();
val = evaluate_expression (exp);
release_value (val);
+ if (VALUE_LAZY (val))
+ value_fetch_lazy (val);
+
+ tok = arg;
+ while (*tok == ' ' || *tok == '\t')
+ tok++;
+ end_tok = tok;
+
+ while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
+ end_tok++;
+
+ toklen = end_tok - tok;
+ if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
+ {
+ tok = cond_start = end_tok + 1;
+ cond = parse_exp_1 (&tok, 0, 0);
+ cond_end = tok;
+ }
+ if (*tok)
+ error ("Junk at end of command.");
+
+ if (accessflag == 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_ptid
+ yet, which forced slow watches before a "run" or "attach", and it
+ still fails somewhere in the startup code.
+
+ Until I figure out what's happening, I'm disallowing watches altogether
+ before the "run" or "attach" command. We'll tell the user they must
+ set watches after getting the program started. */
+ if (!target_has_execution)
+ {
+ warning ("can't do that without a running program; try \"break main\", \"run\" first");
+ return;
+ }
+#endif /* HPUXHPPA */
/* Now set up the breakpoint. */
b = set_raw_breakpoint (sal);
set_breakpoint_count (breakpoint_count + 1);
b->number = breakpoint_count;
- b->type = bp_watchpoint;
b->disposition = donttouch;
b->exp = exp;
b->exp_valid_block = exp_valid_block;
+ b->exp_string = savestring (exp_start, exp_end - exp_start);
b->val = val;
- b->cond = 0;
- b->cond_string = NULL;
+ b->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);
+ default_breakpoint_line, (char ***) NULL);
else
- sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0);
-
+ 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 (sals.sals); /* malloc'd, so freed */
-
+ xfree (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, -1, 0);
- do_cleanups(old_chain);
+
+ proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
+ /* 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)();
+map_catch_names (char *args, 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;
goto win;
}
#endif
- printf ("No catch clause for exception %s.\n", p);
+ printf_unfiltered ("No catch clause for exception %s.\n", p);
#if 0
win:
#endif
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 (this_level_only)
- int this_level_only;
+get_catch_sals (int this_level_only)
{
register struct blockvector *bl;
register struct block *block;
int index, have_default = 0;
- struct frame_info *fi;
CORE_ADDR pc;
struct symtabs_and_lines sals;
struct sal_chain *sal_chain = 0;
if (selected_frame == NULL)
error ("No selected frame.");
block = get_frame_block (selected_frame);
- fi = get_frame_info (selected_frame);
- pc = fi->pc;
+ pc = selected_frame->pc;
sals.nelts = 0;
sals.sals = NULL;
bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
- bzero (blocks_searched, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
+ memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
while (block != 0)
{
for (i = 0; i < nsyms; i++)
{
sym = BLOCK_SYM (b, i);
- if (! strcmp (SYMBOL_NAME (sym), "default"))
+ if (STREQ (SYMBOL_NAME (sym), "default"))
{
if (have_default)
continue;
if (SYMBOL_CLASS (sym) == LOC_LABEL)
{
struct sal_chain *next = (struct sal_chain *)
- alloca (sizeof (struct sal_chain));
+ alloca (sizeof (struct sal_chain));
next->next = sal_chain;
- next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
+ next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym),
+ 0);
sal_chain = next;
}
}
break;
/* After handling the function's top-level block, stop.
- Don't continue to its superblock, the block of
- per-file symbols. */
+ Don't continue to its superblock, the block of
+ per-file symbols. */
if (BLOCK_FUNCTION (block))
break;
block = BLOCK_SUPERBLOCK (block);
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 (PIDGET (inferior_ptid), 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 (PIDGET (inferior_ptid), tempflag,
+ dll_pathname, cond_string);
+}
+#endif /* SOLIB_ADD */
+
/* Commands to deal with catching exceptions. */
+/* Set a breakpoint at the specified callback routine for an
+ exception event callback */
+
+static void
+create_exception_catchpoint (int tempflag, char *cond_string,
+ enum exception_event_kind ex_event,
+ struct symtab_and_line *sal)
+{
+ struct breakpoint *b;
+ int thread = -1; /* All threads. */
+
+ if (!sal) /* no exception support? */
+ return;
+
+ b = set_raw_breakpoint (*sal);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = NULL;
+ b->cond_string = (cond_string == NULL) ?
+ NULL : savestring (cond_string, strlen (cond_string));
+ b->thread = thread;
+ b->addr_string = NULL;
+ b->enable = enabled;
+ b->disposition = tempflag ? del : donttouch;
+ switch (ex_event)
+ {
+ case EX_EVENT_THROW:
+ b->type = bp_catch_throw;
+ break;
+ case EX_EVENT_CATCH:
+ b->type = bp_catch_catch;
+ break;
+ default: /* error condition */
+ b->type = bp_none;
+ b->enable = disabled;
+ error ("Internal error -- invalid catchpoint kind");
+ }
+ mention (b);
+}
+
+/* Deal with "catch catch" and "catch throw" commands */
+
+static void
+catch_exception_command_1 (enum exception_event_kind ex_event, char *arg,
+ int tempflag, int from_tty)
+{
+ char *cond_string = NULL;
+ struct symtab_and_line *sal = NULL;
+
+ ep_skip_leading_whitespace (&arg);
+
+ cond_string = ep_parse_optional_if_clause (&arg);
+
+ if ((*arg != '\0') && !isspace (*arg))
+ error ("Junk at end of arguments.");
+
+ if ((ex_event != EX_EVENT_THROW) &&
+ (ex_event != EX_EVENT_CATCH))
+ error ("Unsupported or unknown exception event; cannot catch it");
+
+ /* See if we can find a callback routine */
+ sal = target_enable_exception_callback (ex_event, 1);
+
+ if (sal)
+ {
+ /* We have callbacks from the runtime system for exceptions.
+ Set a breakpoint on the sal found, if no errors */
+ if (sal != (struct symtab_and_line *) -1)
+ create_exception_catchpoint (tempflag, cond_string, ex_event, sal);
+ else
+ return; /* something went wrong with setting up callbacks */
+ }
+ else
+ {
+ /* No callbacks from runtime system for exceptions.
+ Try GNU C++ exception breakpoints using labels in debug info. */
+ if (ex_event == EX_EVENT_CATCH)
+ {
+ handle_gnu_4_16_catch_command (arg, tempflag, from_tty);
+ }
+ else if (ex_event == EX_EVENT_THROW)
+ {
+ /* Set a breakpoint on __raise_exception () */
+
+ warning ("Unsupported with this platform/compiler combination.");
+ warning ("Perhaps you can achieve the effect you want by setting");
+ warning ("a breakpoint on __raise_exception().");
+ }
+ }
+}
+
+/* Cover routine to allow wrapping target_enable_exception_catchpoints
+ inside a catch_errors */
+
+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 */
+}
+
+
+
+/* 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. */
else
{
/* Grab selected catch clauses. */
- error ("catch NAME not implemeneted");
+ 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;
- printf ("Breakpoint %d at %s", b->number, local_hex_string(b->address));
- if (b->symtab)
- printf (": file %s, line %d.", b->symtab->filename, b->line_number);
- printf ("\n");
+ mention (b);
}
if (sals.nelts > 1)
{
- printf ("Multiple breakpoints were set.\n");
- printf ("Use the \"delete\" command to delete unwanted breakpoints.\n");
+ warning ("Multiple breakpoints were set.");
+ warning ("Use the \"delete\" command to delete unwanted breakpoints.");
+ }
+ xfree (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");
}
- free (sals.sals);
+ else if (strncmp (arg1_start, "catch", arg1_length) == 0)
+ {
+ catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1,
+ tempflag, from_tty);
+ }
+ else if (strncmp (arg1_start, "throw", arg1_length) == 0)
+ {
+ catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1,
+ tempflag, from_tty);
+ }
+ else if (strncmp (arg1_start, "thread_start", arg1_length) == 0)
+ {
+ error ("Catch of thread_start not yet implemented");
+ }
+ else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0)
+ {
+ error ("Catch of thread_exit not yet implemented");
+ }
+ else if (strncmp (arg1_start, "thread_join", arg1_length) == 0)
+ {
+ error ("Catch of thread_join not yet implemented");
+ }
+ else if (strncmp (arg1_start, "start", arg1_length) == 0)
+ {
+ error ("Catch of start not yet implemented");
+ }
+ else if (strncmp (arg1_start, "exit", arg1_length) == 0)
+ {
+ error ("Catch of exit not yet implemented");
+ }
+ else if (strncmp (arg1_start, "fork", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_FORK_CATCHPOINT)
+ catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of fork not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "vfork", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_VFORK_CATCHPOINT)
+ catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of vfork not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "exec", arg1_length) == 0)
+ {
+#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
+ catch_exec_command_1 (arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of exec not yet implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "load", arg1_length) == 0)
+ {
+#if defined(SOLIB_ADD)
+ catch_load_command_1 (arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of load not implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "unload", arg1_length) == 0)
+ {
+#if defined(SOLIB_ADD)
+ catch_unload_command_1 (arg1_end + 1, tempflag, from_tty);
+#else
+ error ("Catch of load not implemented");
+#endif
+ }
+ else if (strncmp (arg1_start, "stop", arg1_length) == 0)
+ {
+ error ("Catch of stop not yet implemented");
+ }
+
+ /* This doesn't appear to be an event name */
+
+ else
+ {
+ /* Pre-v.4.16 behaviour was to treat the argument
+ as the name of an exception */
+ /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
+ /* Now this is not allowed */
+ error ("Unknown event kind specified for catch");
+
+ }
+}
+
+/* Used by the gui, could be made a worker for other things. */
+
+struct breakpoint *
+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->symtab == sal.symtab
- && 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->symtab == sal.symtab
- && 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 ("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 ("%d ", found->number);
+ if (from_tty)
+ printf_unfiltered ("%d ", found->number);
b1 = found->next;
delete_breakpoint (found);
found = b1;
}
- if (from_tty) putchar ('\n');
+ if (from_tty)
+ putchar_unfiltered ('\n');
}
- free (sals.sals);
+ xfree (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);
+ }
+
+
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
+ && 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
+ && 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 (__FILE__, __LINE__,
+ "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 ();
+ 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);
if (bpt->cond)
- free (bpt->cond);
+ xfree (bpt->cond);
if (bpt->cond_string != NULL)
- free (bpt->cond_string);
+ xfree (bpt->cond_string);
if (bpt->addr_string != NULL)
- free (bpt->addr_string);
-
- if (xgdb_verbose && bpt->type == bp_breakpoint)
- printf ("breakpoint #%d deleted\n", bpt->number);
+ xfree (bpt->addr_string);
+ if (bpt->exp != NULL)
+ xfree (bpt->exp);
+ if (bpt->exp_string != NULL)
+ xfree (bpt->exp_string);
+ if (bpt->val != NULL)
+ value_free (bpt->val);
+ if (bpt->source_file != NULL)
+ xfree (bpt->source_file);
+ if (bpt->dll_pathname != NULL)
+ xfree (bpt->dll_pathname);
+ if (bpt->triggered_dll_pathname != NULL)
+ xfree (bpt->triggered_dll_pathname);
+ if (bpt->exec_pathname != NULL)
+ xfree (bpt->exec_pathname);
/* Be sure no bpstat's are pointing at it after it's been freed. */
- /* FIXME, how can we find all bpstat's? We just check stop_bpstat for now. */
+ /* FIXME, how can we find all bpstat's?
+ We just check stop_bpstat for now. */
for (bs = stop_bpstat; bs; bs = bs->next)
if (bs->breakpoint_at == bpt)
- bs->breakpoint_at = NULL;
- free (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;
+
+ xfree (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;
enum enable save_enable;
- if (b->type != bp_watchpoint && b->addr_string != NULL)
+ 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. */
+ delete_breakpoint (b);
+ 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);
+ 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]);
- b->symtab = sals.sals[i].symtab;
- b->line_number = sals.sals[i].line;
- b->address = sals.sals[i].pc;
+ /* Reparse conditions, they might contain references to the
+ old symtab. */
if (b->cond_string != NULL)
{
s = b->cond_string;
+ if (b->cond)
+ xfree (b->cond);
b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0);
}
-
- check_duplicates (b->address);
+ /* 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... */
+ || (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))
+ )
+ {
+ if (b->source_file != NULL)
+ xfree (b->source_file);
+ if (sals.sals[i].symtab == NULL)
+ b->source_file = NULL;
+ else
+ b->source_file =
+ savestring (sals.sals[i].symtab->filename,
+ strlen (sals.sals[i].symtab->filename));
+ b->line_number = sals.sals[i].line;
+ b->address = sals.sals[i].pc;
+
+ /* 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. */
- mention (b);
+
+
+ /* Now that this is re-enabled, check_duplicates
+ can be used. */
+ check_duplicates (b->address, b->section);
+
}
- free (sals.sals);
- }
- else
- {
- /* Anything without a string can't be re-set. */
+ xfree (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 function names. */
+
+ /* So for now, just use a global context. */
+ if (b->exp)
+ xfree (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))
+ value_fetch_lazy (b->val);
+
+ if (b->cond_string != NULL)
+ {
+ s = b->cond_string;
+ if (b->cond)
+ xfree (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 */
+ /* Delete longjmp breakpoints, they will be reset later by
+ breakpoint_re_set. */
+ case bp_longjmp:
+ case bp_longjmp_resume:
delete_breakpoint (b);
+ break;
+
+ /* This breakpoint is special, it's set up when the inferior
+ starts and we really don't want to touch it. */
+ case bp_shlib_event:
+
+ /* 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 */];
-
+ char message[sizeof (message1) + 30 /* slop */ ];
+
+ save_language = current_language->la_language;
+ save_input_radix = input_radix;
ALL_BREAKPOINTS_SAFE (b, temp)
- {
- b->symtab = 0; /* Be sure we don't point to old dead symtab */
- sprintf (message, message1, b->number); /* Format possible error msg */
- (void) catch_errors (breakpoint_re_set_one, (char *) b, message);
- }
+ {
+ /* 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 (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");
+#endif
}
\f
/* Set ignore-count of breakpoint number BPTNUM to COUNT.
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_ptid. */
+void
+breakpoint_re_set_thread (struct breakpoint *b)
+{
+ if (b->thread != -1)
+ {
+ if (in_thread_list (inferior_ptid))
+ b->thread = pid_to_thread_id (inferior_ptid);
+ }
+}
+
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 ("Will stop next time breakpoint %d is reached.", bptnum);
- else if (count == 1)
- printf ("Will ignore next crossing of breakpoint %d.", bptnum);
- else
- printf ("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.");
set_ignore_count (num,
longest_to_int (value_as_long (parse_and_eval (p))),
from_tty);
- printf ("\n");
+ printf_filtered ("\n");
+ breakpoints_changed ();
}
\f
/* Call FUNCTION on each of the breakpoints
whose numbers are given in ARGS. */
static void
-map_breakpoint_numbers (args, function)
- char *args;
- void (*function) PARAMS ((struct breakpoint *));
+map_breakpoint_numbers (char *args, 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 ("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;
}
}
-static void
-enable_breakpoint (bpt)
- struct breakpoint *bpt;
+void
+disable_breakpoint (struct breakpoint *bpt)
{
- bpt->enable = enabled;
+ /* 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;
- if (xgdb_verbose && bpt->type == bp_breakpoint)
- printf ("breakpoint #%d enabled\n", bpt->number);
+ /* You can't disable permanent breakpoints. */
+ if (bpt->enable == permanent)
+ return;
- check_duplicates (bpt->address);
- if (bpt->type == bp_watchpoint)
- {
- if (bpt->exp_valid_block != NULL
- && !contained_in (get_selected_block (), bpt->exp_valid_block))
- {
- printf_filtered ("\
-Cannot enable watchpoint %d because the block in which its expression\n\
-is valid is not currently in scope.\n", bpt->number);
- return;
- }
+ bpt->enable = disabled;
- value_free (bpt->val);
+ check_duplicates (bpt->address, bpt->section);
- bpt->val = evaluate_expression (bpt->exp);
- release_value (bpt->val);
- }
+ 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;
+disable_command (char *args, int from_tty)
{
- struct breakpoint *bpt;
+ register struct breakpoint *bpt;
if (args == 0)
ALL_BREAKPOINTS (bpt)
- enable_breakpoint (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, enable_breakpoint);
+ map_breakpoint_numbers (args, disable_breakpoint);
}
static void
-disable_breakpoint (bpt)
- struct breakpoint *bpt;
+do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition)
{
- bpt->enable = disabled;
+ struct frame_info *save_selected_frame = NULL;
+ int save_selected_frame_level = -1;
+ 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 (bpt->enable != permanent)
+ bpt->enable = enabled;
+ bpt->disposition = disposition;
+ check_duplicates (bpt->address, bpt->section);
+ breakpoints_changed ();
+
+ 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)
+ {
+ 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 ("\
+Cannot enable watchpoint %d because the block in which its expression\n\
+is valid is not currently in scope.\n", bpt->number);
+ 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 (xgdb_verbose && bpt->type == bp_breakpoint)
- printf ("breakpoint #%d disabled\n", bpt->number);
+ 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);
+}
- check_duplicates (bpt->address);
+void
+enable_breakpoint (struct breakpoint *bpt)
+{
+ do_enable_breakpoint (bpt, bpt->disposition);
}
+/* The enable command enables the specified breakpoints (or all defined
+ breakpoints) so they once again become (or continue to be) effective
+ in stopping the inferior. */
+
/* ARGSUSED */
static void
-disable_command (args, from_tty)
- char *args;
- int from_tty;
+enable_command (char *args, int from_tty)
{
register struct breakpoint *bpt;
if (args == 0)
ALL_BREAKPOINTS (bpt)
- disable_breakpoint (bpt);
+ switch (bpt->type)
+ {
+ 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);
+ default_breakpoint_symtab,
+ default_breakpoint_line,
+ (char ***) NULL);
else
- sals = decode_line_1 (&string, funfirstline, (struct symtab *)NULL, 0);
+ sals = decode_line_1 (&string, funfirstline,
+ (struct symtab *) NULL, 0, (char ***) NULL);
if (*string)
error ("Junk at end of line specification: %s", string);
return sals;
}
\f
-
-/* Chain containing all defined enable commands. */
-
-extern struct cmd_list_element
- *enablelist, *disablelist,
- *deletelist, *enablebreaklist;
-
-extern struct cmd_list_element *cmdlist;
-
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 enabled temporarily,\n\
-so it will be disabled when hit. Equivalent to \"break\" followed\n\
-by using \"enable once\" on the breakpoint number.");
+Like \"break\" except the breakpoint is only temporary,\n\
+so it will be deleted when hit. Equivalent to \"break\" followed\n\
+by using \"enable delete\" on the breakpoint number.");
+ add_com ("txbreak", class_breakpoint, tbreak_at_finish_command,
+ "Set temporary breakpoint at procedure exit. Either there should\n\
+be no argument or the argument must be a depth.\n");
+
+ add_com ("hbreak", class_breakpoint, hbreak_command,
+ "Set a hardware assisted breakpoint. Args like \"break\" command.\n\
+Like \"break\" except the breakpoint requires hardware support,\n\
+some target hardware may not have this support.");
+
+ add_com ("thbreak", class_breakpoint, thbreak_command,
+ "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
+Like \"hbreak\" except the breakpoint is only temporary,\n\
+so it will be deleted when hit.");
add_prefix_cmd ("enable", class_breakpoint, enable_command,
"Enable some breakpoints.\n\
This is used to cancel the effect of the \"disable\" command.\n\
With a subcommand you can enable temporarily.",
&enablelist, "enable ", 1, &cmdlist);
+ if (xdb_commands)
+ add_com ("ab", class_breakpoint, enable_command,
+ "Enable some breakpoints.\n\
+Give breakpoint numbers (separated by spaces) as arguments.\n\
+With no subcommand, breakpoints are enabled until you command otherwise.\n\
+This is used to cancel the effect of the \"disable\" command.\n\
+With a subcommand you can enable temporarily.");
+
+ add_com_alias ("en", "enable", class_breakpoint, 1);
add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command,
- "Enable some breakpoints.\n\
+ "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\
-If a breakpoint is hit while enabled in this fashion, it becomes disabled.\n\
-See the \"tbreak\" command which sets a breakpoint and enables it once.",
+If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
&enablebreaklist);
add_cmd ("delete", no_class, enable_delete_command,
add_cmd ("once", no_class, enable_once_command,
"Enable breakpoints for one hit. Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it becomes disabled.\n\
-See the \"tbreak\" command which sets a breakpoint and enables it once.",
+If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
&enablelist);
add_prefix_cmd ("disable", class_breakpoint, disable_command,
- "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 \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
+ }
+
add_info ("breakpoints", breakpoints_info,
- "Status of all breakpoints, or breakpoint number NUMBER.\n\
-Second column is \"y\" for enabled breakpoint, \"n\" for disabled,\n\
-\"o\" for enabled once (disable when hit), \"d\" for enable but delete when hit.\n\
-Then come the address and the file/line number.\n\n\
-Convenience variable \"$_\" and default examine address for \"x\"\n\
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+The \"Type\" column indicates one of:\n\
+\tbreakpoint - normal breakpoint\n\
+\twatchpoint - watchpoint\n\
+The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
+breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
+address and file/line number respectively.\n\n",
+ "Convenience variable \"$_\" and default examine address for \"x\"\n\
+are set to the address of the last breakpoint listed.\n\n\
+Convenience variable \"$bpnum\" contains the number of the last\n\
+breakpoint set.", NULL));
+
+ if (xdb_commands)
+ add_com ("lb", class_breakpoint, breakpoints_info,
+ concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
+The \"Type\" column indicates one of:\n\
+\tbreakpoint - normal breakpoint\n\
+\twatchpoint - watchpoint\n\
+The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
+the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
+breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
+address and file/line number respectively.\n\n",
+ "Convenience variable \"$_\" and default examine address for \"x\"\n\
are set to the address of the last breakpoint listed.\n\n\
Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.");
+breakpoint set.", NULL));
+
+ add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints,
+ 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\
+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),
+ &maintenanceinfolist);
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", watchpoints_info,
- "Status of all watchpoints, or watchpoint number NUMBER.\n\
-Second column is \"y\" for enabled watchpoints, \"n\" for disabled.");
+ 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.");
+
+ 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.");
+
+ add_info ("watchpoints", breakpoints_info,
+ "Synonym for ``info breakpoints''.");
+
+
+ c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger,
+ (char *) &can_use_hw_watchpoints,
+ "Set debugger's willingness to use watchpoint hardware.\n\
+If zero, gdb will not use hardware for new watchpoints, even if\n\
+such is available. (However, any hardware watchpoints that were\n\
+created before setting this to nonzero, will continue to use watchpoint\n\
+hardware.)",
+ &setlist);
+ add_show_from_set (c, &showlist);
+
+ can_use_hw_watchpoints = 1;
}
projects / deliverable / binutils-gdb.git / blobdiff