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-rw-r--r--gdb/breakpoint.c7809
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diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
deleted file mode 100644
index b88f674..0000000
--- a/gdb/breakpoint.c
+++ /dev/null
@@ -1,7809 +0,0 @@
-/* Everything about breakpoints, for GDB.
-
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
- Foundation, Inc.
-
- 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 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include <ctype.h>
-#include "symtab.h"
-#include "frame.h"
-#include "breakpoint.h"
-#include "gdbtypes.h"
-#include "expression.h"
-#include "gdbcore.h"
-#include "gdbcmd.h"
-#include "value.h"
-#include "command.h"
-#include "inferior.h"
-#include "gdbthread.h"
-#include "target.h"
-#include "language.h"
-#include "gdb_string.h"
-#include "demangle.h"
-#include "annotate.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "linespec.h"
-#include "completer.h"
-#include "gdb.h"
-#include "ui-out.h"
-#include "cli/cli-script.h"
-
-#include "gdb-events.h"
-
-/* Prototypes for local functions. */
-
-static void until_break_command_continuation (struct continuation_arg *arg);
-
-static void catch_command_1 (char *, int, int);
-
-static void enable_delete_command (char *, int);
-
-static void enable_delete_breakpoint (struct breakpoint *);
-
-static void enable_once_command (char *, int);
-
-static void enable_once_breakpoint (struct breakpoint *);
-
-static void disable_command (char *, int);
-
-static void enable_command (char *, int);
-
-static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *));
-
-static void ignore_command (char *, int);
-
-static int breakpoint_re_set_one (PTR);
-
-static void clear_command (char *, int);
-
-static void catch_command (char *, int);
-
-static void handle_gnu_4_16_catch_command (char *, int, int);
-
-static struct symtabs_and_lines get_catch_sals (int);
-
-static void watch_command (char *, int);
-
-static int can_use_hardware_watchpoint (struct value *);
-
-extern void break_at_finish_command (char *, int);
-extern void break_at_finish_at_depth_command (char *, int);
-
-extern void tbreak_at_finish_command (char *, int);
-
-static void break_command_1 (char *, int, int);
-
-static void mention (struct breakpoint *);
-
-struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype);
-
-static void check_duplicates (struct breakpoint *);
-
-static void describe_other_breakpoints (CORE_ADDR, asection *);
-
-static void breakpoints_info (char *, int);
-
-static void breakpoint_1 (int, int);
-
-static bpstat bpstat_alloc (struct breakpoint *, bpstat);
-
-static int breakpoint_cond_eval (PTR);
-
-static void cleanup_executing_breakpoints (PTR);
-
-static void commands_command (char *, int);
-
-static void condition_command (char *, int);
-
-static int get_number_trailer (char **, int);
-
-void set_breakpoint_count (int);
-
-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_p;
- }
-args_for_catchpoint_enable;
-
-static int watchpoint_check (PTR);
-
-static int cover_target_enable_exception_callback (PTR);
-
-static void maintenance_info_breakpoints (char *, int);
-
-static void create_longjmp_breakpoint (char *);
-
-static void create_overlay_event_breakpoint (char *);
-
-static int hw_breakpoint_used_count (void);
-
-static int hw_watchpoint_used_count (enum bptype, int *);
-
-static void hbreak_command (char *, int);
-
-static void thbreak_command (char *, int);
-
-static void watch_command_1 (char *, int, int);
-
-static void rwatch_command (char *, int);
-
-static void awatch_command (char *, int);
-
-static void do_enable_breakpoint (struct breakpoint *, enum bpdisp);
-
-static void solib_load_unload_1 (char *hookname,
- int tempflag,
- char *dll_pathname,
- char *cond_string, enum bptype bp_kind);
-
-static void create_fork_vfork_event_catchpoint (int tempflag,
- char *cond_string,
- enum bptype bp_kind);
-
-static void break_at_finish_at_depth_command_1 (char *arg,
- int flag, int from_tty);
-
-static void break_at_finish_command_1 (char *arg, int flag, int from_tty);
-
-static void stop_command (char *arg, int from_tty);
-
-static void stopin_command (char *arg, int from_tty);
-
-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? */
-
-/* Are we executing breakpoint commands? */
-static int executing_breakpoint_commands;
-
-/* Are overlay event breakpoints enabled? */
-static int overlay_events_enabled;
-
-/* Walk the following statement or block through all breakpoints.
- 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_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. */
-
-struct breakpoint *breakpoint_chain;
-
-/* Number of last breakpoint made. */
-
-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. */
-
-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
- not valid, and "break" with no arg is an error.
-
- This set by print_stack_frame, which calls set_default_breakpoint. */
-
-int default_breakpoint_valid;
-CORE_ADDR default_breakpoint_address;
-struct symtab *default_breakpoint_symtab;
-int default_breakpoint_line;
-
-/* *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 "$" followed by the name
- of a convenience variable. Making it an expression wouldn't work well
- for map_breakpoint_numbers (e.g. "4 + 5 + 6").
-
- TRAILER is a character which can be found after the number; most
- commonly this is `-'. If you don't want a trailer, use \0. */
-static int
-get_number_trailer (char **pp, int trailer)
-{
- int retval = 0; /* default */
- char *p = *pp;
-
- if (p == NULL)
- /* Empty line means refer to the last breakpoint. */
- return breakpoint_count;
- else if (*p == '$')
- {
- /* Make a copy of the name, so we can null-terminate it
- to pass to lookup_internalvar(). */
- char *varname;
- char *start = ++p;
- struct value *val;
-
- while (isalnum (*p) || *p == '_')
- p++;
- varname = (char *) alloca (p - start + 1);
- 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)
- 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"). */
- {
- /* Skip non-numeric token */
- while (*p && !isspace((int) *p))
- ++p;
- /* Return zero, which caller must interpret as error. */
- retval = 0;
- }
- else
- retval = atoi (*pp);
- }
- if (!(isspace (*p) || *p == '\0' || *p == trailer))
- {
- /* Trailing junk: return 0 and let caller print error msg. */
- while (!(isspace (*p) || *p == '\0' || *p == trailer))
- ++p;
- retval = 0;
- }
- while (isspace (*p))
- p++;
- *pp = p;
- return retval;
-}
-
-
-/* Like get_number_trailer, but don't allow a trailer. */
-int
-get_number (char **pp)
-{
- return get_number_trailer (pp, '\0');
-}
-
-/* Parse a number or a range.
- * A number will be of the form handled by get_number.
- * A range will be of the form <number1> - <number2>, and
- * will represent all the integers between number1 and number2,
- * inclusive.
- *
- * While processing a range, this fuction is called iteratively;
- * At each call it will return the next value in the range.
- *
- * At the beginning of parsing a range, the char pointer PP will
- * be advanced past <number1> and left pointing at the '-' token.
- * Subsequent calls will not advance the pointer until the range
- * is completed. The call that completes the range will advance
- * pointer PP past <number2>.
- */
-
-int
-get_number_or_range (char **pp)
-{
- static int last_retval, end_value;
- static char *end_ptr;
- static int in_range = 0;
-
- if (**pp != '-')
- {
- /* Default case: pp is pointing either to a solo number,
- or to the first number of a range. */
- last_retval = get_number_trailer (pp, '-');
- if (**pp == '-')
- {
- char **temp;
-
- /* This is the start of a range (<number1> - <number2>).
- Skip the '-', parse and remember the second number,
- and also remember the end of the final token. */
-
- temp = &end_ptr;
- end_ptr = *pp + 1;
- while (isspace ((int) *end_ptr))
- end_ptr++; /* skip white space */
- end_value = get_number (temp);
- if (end_value < last_retval)
- {
- error ("inverted range");
- }
- else if (end_value == last_retval)
- {
- /* degenerate range (number1 == number2). Advance the
- token pointer so that the range will be treated as a
- single number. */
- *pp = end_ptr;
- }
- else
- in_range = 1;
- }
- }
- else if (! in_range)
- error ("negative value");
- else
- {
- /* pp points to the '-' that betokens a range. All
- number-parsing has already been done. Return the next
- integer value (one greater than the saved previous value).
- Do not advance the token pointer 'pp' until the end of range
- is reached. */
-
- if (++last_retval == end_value)
- {
- /* End of range reached; advance token pointer. */
- *pp = end_ptr;
- in_range = 0;
- }
- }
- return last_retval;
-}
-
-
-
-/* condition N EXP -- set break condition of breakpoint N to EXP. */
-
-static void
-condition_command (char *arg, int from_tty)
-{
- register struct breakpoint *b;
- char *p;
- register int bnum;
-
- if (arg == 0)
- error_no_arg ("breakpoint number");
-
- 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)
- {
- 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_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 ();
- breakpoint_modify_event (b->number);
- return;
- }
-
- error ("No breakpoint number %d.", bnum);
-}
-
-/* ARGSUSED */
-static void
-commands_command (char *arg, int from_tty)
-{
- register struct breakpoint *b;
- char *p;
- register int bnum;
- struct command_line *l;
-
- /* If we allowed this, we would have problems with when to
- free the storage, if we change the commands currently
- being read from. */
-
- if (executing_breakpoint_commands)
- error ("Can't use the \"commands\" command among a breakpoint's commands.");
-
- p = arg;
- bnum = get_number (&p);
-
- if (p && *p)
- error ("Unexpected extra arguments following breakpoint number.");
-
- ALL_BREAKPOINTS (b)
- if (b->number == bnum)
- {
- 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 ();
- breakpoint_modify_event (b->number);
- return;
- }
- error ("No breakpoint number %d.", bnum);
-}
-
-/* Like target_read_memory() but if breakpoints are inserted, return
- the shadow contents instead of the breakpoints themselves.
-
- Read "memory data" from whatever target or inferior we have.
- Returns zero if successful, errno value if not. EIO is used
- for address out of bounds. If breakpoints are inserted, returns
- shadow contents, not the breakpoints themselves. From breakpoint.c. */
-
-int
-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 (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. */
- {
- /* Offset within shadow_contents. */
- int bptoffset = 0;
-
- if (bp_addr < memaddr)
- {
- /* Only copy the second part of the breakpoint. */
- bp_size -= memaddr - bp_addr;
- bptoffset = memaddr - bp_addr;
- bp_addr = memaddr;
- }
-
- if (bp_addr + bp_size > memaddr + len)
- {
- /* Only copy the first part of the breakpoint. */
- bp_size -= (bp_addr + bp_size) - (memaddr + len);
- }
-
- memcpy (myaddr + bp_addr - memaddr,
- b->shadow_contents + bptoffset, bp_size);
-
- if (bp_addr > memaddr)
- {
- /* Copy the section of memory before the breakpoint. */
- status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr);
- if (status != 0)
- return status;
- }
-
- if (bp_addr + bp_size < memaddr + len)
- {
- /* Copy the section of memory after the breakpoint. */
- status = read_memory_nobpt (bp_addr + bp_size,
- myaddr + bp_addr + bp_size - memaddr,
- memaddr + len - (bp_addr + bp_size));
- if (status != 0)
- return status;
- }
- return 0;
- }
- }
- /* Nothing overlaps. Just call read_memory_noerr. */
- return target_read_memory (memaddr, myaddr, len);
-}
-
-
-/* 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 (void)
-{
- register struct breakpoint *b, *temp;
- int return_val = 0; /* return success code. */
- int val = 0;
- int disabled_breaks = 0;
- int hw_breakpoint_error = 0;
- int process_warning = 0;
-
- static char message1[] = "Error inserting catchpoint %d:\n";
- static char message[sizeof (message1) + 30];
-
-#ifdef ONE_PROCESS_WRITETEXT
- process_warning = 1;
-#endif
-
- struct ui_file *tmp_error_stream = mem_fileopen ();
- make_cleanup_ui_file_delete (tmp_error_stream);
-
- /* Explicitly mark the warning -- this will only be printed if
- there was an error. */
- fprintf_unfiltered (tmp_error_stream, "Warning:\n");
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->enable_state == bp_permanent)
- /* Permanent breakpoints cannot be inserted or removed. */
- continue;
- if ((b->type == bp_watchpoint
- || b->type == bp_hardware_watchpoint
- || b->type == bp_read_watchpoint
- || b->type == bp_access_watchpoint) && (!b->val))
- {
- struct value *val;
- val = evaluate_expression (b->exp);
- release_value (val);
- if (VALUE_LAZY (val))
- value_fetch_lazy (val);
- b->val = val;
- }
- 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_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_call_disabled
- && !b->inserted
- && !b->duplicate)
- {
- /* "Normal" instruction breakpoint: either the standard
- trap-instruction bp (bp_breakpoint), or a
- bp_hardware_breakpoint. */
-
- /* First check to see if we have to handle an overlay. */
- if (overlay_debugging == ovly_off
- || b->section == NULL
- || !(section_is_overlay (b->section)))
- {
- /* No overlay handling: just set the 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);
- }
- else
- {
- /* This breakpoint is in an overlay section.
- Shall we set a breakpoint at the LMA? */
- if (!overlay_events_enabled)
- {
- /* Yes -- overlay event support is not active,
- so we must try to set a breakpoint at the LMA.
- This will not work for a hardware breakpoint. */
- if (b->type == bp_hardware_breakpoint)
- warning ("hardware breakpoint %d not supported in overlay!\n",
- b->number);
- else
- {
- CORE_ADDR addr = overlay_unmapped_address (b->address,
- b->section);
- /* Set a software (trap) breakpoint at the LMA. */
- val = target_insert_breakpoint (addr, b->shadow_contents);
- if (val != 0)
- fprintf_unfiltered (tmp_error_stream,
- "Overlay breakpoint %d failed: in ROM?",
- b->number);
- }
- }
- /* Shall we set a breakpoint at the VMA? */
- if (section_is_mapped (b->section))
- {
- /* Yes. This overlay section is mapped into memory. */
- 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);
- }
- else
- {
- /* No. This breakpoint will not be inserted.
- No error, but do not mark the bp as 'inserted'. */
- continue;
- }
- }
-
- 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_state = bp_shlib_disabled;
- if (!disabled_breaks)
- {
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert breakpoint %d.\n", b->number);
- fprintf_unfiltered (tmp_error_stream,
- "Temporarily disabling shared library breakpoints:\n");
- }
- disabled_breaks = 1;
- fprintf_unfiltered (tmp_error_stream, "breakpoint #%d\n", b->number);
- }
- else
-#endif
- {
- process_warning = 1;
- if (b->type == bp_hardware_breakpoint)
- {
- hw_breakpoint_error = 1;
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert hardware breakpoint %d.\n",
- b->number);
- }
- else
- {
- fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number);
- fprintf_filtered (tmp_error_stream, "Error accessing memory address ");
- print_address_numeric (b->address, 1, tmp_error_stream);
- fprintf_filtered (tmp_error_stream, ": %s.\n",
- safe_strerror (val));
- }
-
- }
- }
- else
- b->inserted = 1;
-
- if (val)
- return_val = val; /* remember failure */
- }
- else if (ep_is_exception_catchpoint (b)
- && b->enable_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_call_disabled
- && !b->inserted
- && !b->duplicate)
-
- {
- /* If we get here, we must have a callback mechanism for exception
- events -- with g++ style embedded label support, we insert
- ordinary breakpoints and not catchpoints. */
- /* Format possible error message */
- sprintf (message, message1, b->number);
-
- val = target_insert_breakpoint (b->address, b->shadow_contents);
- if (val)
- {
- /* Couldn't set breakpoint for some reason */
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert catchpoint %d; disabling it.\n",
- b->number);
- fprintf_filtered (tmp_error_stream, "Error accessing memory address ");
- print_address_numeric (b->address, 1, tmp_error_stream);
- fprintf_filtered (tmp_error_stream, ": %s.\n",
- safe_strerror (val));
- b->enable_state = bp_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_p = 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 */
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert catchpoint %d; disabling it.\n",
- b->number);
- b->enable_state = bp_disabled;
- }
- }
-
- if (val)
- return_val = val; /* remember failure */
- }
-
- else if ((b->type == bp_hardware_watchpoint ||
- b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->enable_state == bp_enabled
- && b->disposition != disp_del_at_next_stop
- && !b->inserted
- && !b->duplicate)
- {
- struct frame_info *saved_frame;
- int saved_level, within_current_scope;
- struct value *mark = value_mark ();
- struct value *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 = frame_relative_level (selected_frame);
-
- /* Determine if the watchpoint is within scope. */
- if (b->exp_valid_block == NULL)
- within_current_scope = 1;
- else
- {
- struct frame_info *fi;
- fi = frame_find_by_id (b->watchpoint_frame);
- within_current_scope = (fi != NULL);
- if (within_current_scope)
- select_frame (fi);
- }
-
- if (within_current_scope)
- {
- /* Evaluate the expression and cut the chain of values
- produced off from the value chain.
-
- Make sure the value returned isn't lazy; we use
- laziness to determine what memory GDB actually needed
- in order to compute the value of the expression. */
- v = evaluate_expression (b->exp);
- VALUE_CONTENTS(v);
- value_release_to_mark (mark);
-
- b->val_chain = v;
- b->inserted = 1;
-
- /* Look at each value on the value chain. */
- for (; v; v = v->next)
- {
- /* If it's a memory location, and GDB actually needed
- its contents to evaluate the expression, then we
- must watch it. */
- if (VALUE_LVAL (v) == lval_memory
- && ! VALUE_LAZY (v))
- {
- struct type *vtype = check_typedef (VALUE_TYPE (v));
-
- /* We only watch structs and arrays if user asked
- for it explicitly, never if they just happen to
- appear in the middle of some value chain. */
- if (v == b->val_chain
- || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
- && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
- {
- CORE_ADDR addr;
- int len, type;
-
- addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- len = TYPE_LENGTH (VALUE_TYPE (v));
- type = hw_write;
- if (b->type == bp_read_watchpoint)
- type = hw_read;
- else if (b->type == bp_access_watchpoint)
- type = hw_access;
-
- val = target_insert_watchpoint (addr, len, type);
- if (val == -1)
- {
- /* Don't exit the loop, try to insert
- every value on the value chain. That's
- because we will be removing all the
- watches below, and removing a
- watchpoint we didn't insert could have
- adverse effects. */
- b->inserted = 0;
- }
- val = 0;
- }
- }
- }
- /* Failure to insert a watchpoint on any memory value in the
- value chain brings us here. */
- if (!b->inserted)
- {
- process_warning = 1;
- remove_breakpoint (b, mark_uninserted);
- hw_breakpoint_error = 1;
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert hardware watchpoint %d.\n", 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 = disp_del_at_next_stop;
- b->disposition = disp_del_at_next_stop;
- }
-
- /* Restore the frame and level. */
- if ((saved_frame != selected_frame) ||
- (saved_level != frame_relative_level (selected_frame)))
- select_frame (saved_frame);
-
- 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_state == bp_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)
- {
- fprintf_unfiltered (tmp_error_stream, "Cannot insert catchpoint %d.", b->number);
- }
- else
- b->inserted = 1;
-
- if (val)
- return_val = val; /* remember failure */
- }
- }
-
- if (return_val)
- {
- /* If a hardware breakpoint or watchpoint was inserted, add a
- message about possibly exhausted resources. */
- if (hw_breakpoint_error)
- {
- fprintf_unfiltered (tmp_error_stream, "Could not insert hardware breakpoints:\n"
- "You may have requested too many hardware breakpoints/watchpoints.\n");
- }
-
- if (process_warning)
- fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process.");
-
- target_terminal_ours_for_output ();
- error_stream (tmp_error_stream);
- }
- return return_val;
-}
-
-int
-remove_breakpoints (void)
-{
- register struct breakpoint *b;
- int val;
-
- ALL_BREAKPOINTS (b)
- {
- if (b->inserted)
- {
- val = remove_breakpoint (b, mark_uninserted);
- if (val != 0)
- return val;
- }
- }
- return 0;
-}
-
-int
-remove_hw_watchpoints (void)
-{
- register struct breakpoint *b;
- int val;
-
- ALL_BREAKPOINTS (b)
- {
- if (b->inserted
- && (b->type == bp_hardware_watchpoint
- || b->type == bp_read_watchpoint
- || b->type == bp_access_watchpoint))
- {
- val = remove_breakpoint (b, mark_uninserted);
- if (val != 0)
- return val;
- }
- }
- return 0;
-}
-
-int
-reattach_breakpoints (int pid)
-{
- register struct breakpoint *b;
- int val;
- struct cleanup *old_chain = save_inferior_ptid ();
-
- /* Set inferior_ptid; remove_breakpoint uses this global. */
- inferior_ptid = pid_to_ptid (pid);
- 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)
- {
- do_cleanups (old_chain);
- return val;
- }
- }
- }
- do_cleanups (old_chain);
- return 0;
-}
-
-void
-update_breakpoints_after_exec (void)
-{
- struct breakpoint *b;
- struct breakpoint *temp;
-
- /* Doing this first prevents the badness of having delete_breakpoint()
- write a breakpoint's current "shadow contents" to lift the bp. That
- shadow is NOT valid after an exec()! */
- mark_breakpoints_out ();
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- /* Solib breakpoints must be explicitly reset after an exec(). */
- if (b->type == bp_shlib_event)
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* Thread event breakpoints must be set anew after an exec(),
- as must overlay event breakpoints. */
- if (b->type == bp_thread_event || b->type == bp_overlay_event)
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* Step-resume breakpoints are meaningless after an exec(). */
- if (b->type == bp_step_resume)
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* Ditto the sigtramp handler breakpoints. */
- if (b->type == bp_through_sigtramp)
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* Ditto the exception-handling catchpoints. */
- if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw))
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* Don't delete an exec catchpoint, because else the inferior
- won't stop when it ought!
-
- Similarly, we probably ought to keep vfork catchpoints, 'cause
- on this target, we may not be able to stop when the vfork is
- seen, but only when the subsequent exec is seen. (And because
- deleting fork catchpoints here but not vfork catchpoints will
- seem mysterious to users, keep those too.)
-
- ??rehrauer: Let's hope that merely clearing out this catchpoint's
- target address field, if any, is sufficient to have it be reset
- automagically. Certainly on HP-UX that's true.
-
- Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly
- valid code address on some platforms (like the mn10200 and
- mn10300 simulators). We shouldn't assign any special
- interpretation to a breakpoint with a zero address. And in
- fact, GDB doesn't --- I can't see what that comment above is
- talking about. As far as I can tell, setting the address of a
- bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero
- is meaningless, since those are implemented with HP-UX kernel
- hackery, not by storing breakpoint instructions somewhere. */
- if ((b->type == bp_catch_exec) ||
- (b->type == bp_catch_vfork) ||
- (b->type == bp_catch_fork))
- {
- b->address = (CORE_ADDR) NULL;
- continue;
- }
-
- /* bp_finish is a special case. The only way we ought to be able
- to see one of these when an exec() has happened, is if the user
- caught a vfork, and then said "finish". Ordinarily a finish just
- carries them to the call-site of the current callee, by setting
- a temporary bp there and resuming. But in this case, the finish
- will carry them entirely through the vfork & exec.
-
- We don't want to allow a bp_finish to remain inserted now. But
- we can't safely delete it, 'cause finish_command has a handle to
- the bp on a bpstat, and will later want to delete it. There's a
- chance (and I've seen it happen) that if we delete the bp_finish
- here, that its storage will get reused by the time finish_command
- gets 'round to deleting the "use to be a bp_finish" breakpoint.
- We really must allow finish_command to delete a bp_finish.
-
- In the absense of a general solution for the "how do we know
- it's safe to delete something others may have handles to?"
- problem, what we'll do here is just uninsert the bp_finish, and
- let finish_command delete it.
-
- (We know the bp_finish is "doomed" in the sense that it's
- momentary, and will be deleted as soon as finish_command sees
- the inferior stopped. So it doesn't matter that the bp's
- address is probably bogus in the new a.out, unlike e.g., the
- solib breakpoints.) */
-
- if (b->type == bp_finish)
- {
- continue;
- }
-
- /* Without a symbolic address, we have little hope of the
- pre-exec() address meaning the same thing in the post-exec()
- a.out. */
- if (b->addr_string == NULL)
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* If this breakpoint has survived the above battery of checks, then
- it must have a symbolic address. Be sure that it gets reevaluated
- to a target address, rather than reusing the old evaluation.
-
- Jim Blandy <jimb@redhat.com>: As explained above in the comment
- for bp_catch_exec and friends, I'm pretty sure this is entirely
- unnecessary. A call to breakpoint_re_set_one always recomputes
- the breakpoint's address from scratch, or deletes it if it can't.
- So I think this assignment could be deleted without effect. */
- b->address = (CORE_ADDR) NULL;
- }
- /* FIXME what about longjmp breakpoints? Re-create them here? */
- create_overlay_event_breakpoint ("_ovly_debug_event");
-}
-
-int
-detach_breakpoints (int pid)
-{
- register struct breakpoint *b;
- int val;
- struct cleanup *old_chain = save_inferior_ptid ();
-
- if (pid == PIDGET (inferior_ptid))
- error ("Cannot detach breakpoints of inferior_ptid");
-
- /* Set inferior_ptid; remove_breakpoint uses this global. */
- inferior_ptid = pid_to_ptid (pid);
- ALL_BREAKPOINTS (b)
- {
- if (b->inserted)
- {
- val = remove_breakpoint (b, mark_inserted);
- if (val != 0)
- {
- do_cleanups (old_chain);
- return val;
- }
- }
- }
- do_cleanups (old_chain);
- return 0;
-}
-
-static int
-remove_breakpoint (struct breakpoint *b, insertion_state_t is)
-{
- int val;
-
- if (b->enable_state == bp_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)
- {
- /* "Normal" instruction breakpoint: either the standard
- trap-instruction bp (bp_breakpoint), or a
- bp_hardware_breakpoint. */
-
- /* First check to see if we have to handle an overlay. */
- if (overlay_debugging == ovly_off
- || b->section == NULL
- || !(section_is_overlay (b->section)))
- {
- /* No overlay handling: just remove the breakpoint. */
-
- if (b->type == bp_hardware_breakpoint)
- val = target_remove_hw_breakpoint (b->address,
- b->shadow_contents);
- else
- val = target_remove_breakpoint (b->address, b->shadow_contents);
- }
- else
- {
- /* This breakpoint is in an overlay section.
- Did we set a breakpoint at the LMA? */
- if (!overlay_events_enabled)
- {
- /* Yes -- overlay event support is not active, so we
- should have set a breakpoint at the LMA. Remove it.
- */
- CORE_ADDR addr = overlay_unmapped_address (b->address,
- b->section);
- /* Ignore any failures: if the LMA is in ROM, we will
- have already warned when we failed to insert it. */
- if (b->type != bp_hardware_breakpoint)
- target_remove_hw_breakpoint (addr, b->shadow_contents);
- else
- target_remove_breakpoint (addr, b->shadow_contents);
- }
- /* Did we set a breakpoint at the VMA?
- If so, we will have marked the breakpoint 'inserted'. */
- if (b->inserted)
- {
- /* Yes -- remove it. Previously we did not bother to
- remove the breakpoint if the section had been
- unmapped, but let's not rely on that being safe. We
- don't know what the overlay manager might do. */
- if (b->type == bp_hardware_breakpoint)
- val = target_remove_hw_breakpoint (b->address,
- b->shadow_contents);
- else
- val = target_remove_breakpoint (b->address,
- b->shadow_contents);
- }
- else
- {
- /* No -- not inserted, so no need to remove. No error. */
- val = 0;
- }
- }
- if (val)
- return val;
- b->inserted = (is == mark_inserted);
- }
- else if ((b->type == bp_hardware_watchpoint ||
- b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->enable_state == bp_enabled
- && !b->duplicate)
- {
- struct value *v;
- struct value *n;
-
- b->inserted = (is == mark_inserted);
- /* Walk down the saved value chain. */
- for (v = b->val_chain; v; v = v->next)
- {
- /* For each memory reference remove the watchpoint
- at that address. */
- if (VALUE_LVAL (v) == lval_memory
- && ! VALUE_LAZY (v))
- {
- struct type *vtype = check_typedef (VALUE_TYPE (v));
-
- if (v == b->val_chain
- || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
- && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
- {
- CORE_ADDR addr;
- int len, type;
-
- addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- len = TYPE_LENGTH (VALUE_TYPE (v));
- type = hw_write;
- if (b->type == bp_read_watchpoint)
- type = hw_read;
- else if (b->type == bp_access_watchpoint)
- type = hw_access;
-
- val = target_remove_watchpoint (addr, len, type);
- if (val == -1)
- b->inserted = 1;
- val = 0;
- }
- }
- }
- /* Failure to remove any of the hardware watchpoints comes here. */
- if ((is == mark_uninserted) && (b->inserted))
- warning ("Could not remove hardware watchpoint %d.",
- b->number);
-
- /* Free the saved value chain. We will construct a new one
- the next time the watchpoint is inserted. */
- for (v = b->val_chain; v; v = n)
- {
- n = v->next;
- value_free (v);
- }
- b->val_chain = NULL;
- }
- else if ((b->type == bp_catch_fork ||
- b->type == bp_catch_vfork ||
- b->type == bp_catch_exec)
- && b->enable_state == bp_enabled
- && !b->duplicate)
- {
- val = -1;
- switch (b->type)
- {
- 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_state == bp_enabled
- && !b->duplicate)
- {
-
- val = target_remove_breakpoint (b->address, b->shadow_contents);
- if (val)
- return val;
- b->inserted = (is == mark_inserted);
- }
- else if (ep_is_exception_catchpoint (b)
- && b->inserted /* sometimes previous insert doesn't happen */
- && b->enable_state == bp_enabled
- && !b->duplicate)
- {
-
- val = target_remove_breakpoint (b->address, b->shadow_contents);
- if (val)
- return val;
-
- b->inserted = (is == mark_inserted);
- }
-
- return 0;
-}
-
-/* Clear the "inserted" flag in all breakpoints. */
-
-void
-mark_breakpoints_out (void)
-{
- 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);
- if (context == inf_starting)
- {
- /* Reset val field to force reread of starting value
- in insert_breakpoints. */
- if (b->val)
- value_free (b->val);
- b->val = NULL;
- }
- 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_state == bp_enabled
- || b->enable_state == bp_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_state == bp_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_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_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;
-}
-
-
-/* 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);
- free_command_lines (&p->commands);
- 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)
-{
- int current_thread;
-
- if (bsp == NULL)
- error ("Internal error (bpstat_find_step_resume_breakpoint)");
-
- current_thread = pid_to_thread_id (inferior_ptid);
-
- for (; bsp != NULL; bsp = bsp->next)
- {
- if ((bsp->breakpoint_at != NULL) &&
- (bsp->breakpoint_at->type == bp_step_resume) &&
- (bsp->breakpoint_at->thread == current_thread ||
- bsp->breakpoint_at->thread == -1))
- 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)
- {
- free_command_lines (&bs->commands);
- 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
- free_command_lines (&bs->commands);
- }
- do_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)
-{
- struct cleanup *old_chain;
- struct ui_stream *stb;
- stb = ui_out_stream_new (uiout);
- old_chain = make_cleanup_ui_out_stream_delete (stb);
- /* 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:
- annotate_breakpoint (bs->breakpoint_at->number);
- ui_out_text (uiout, "\nBreakpoint ");
- if (ui_out_is_mi_like_p (uiout))
- 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;
- 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_overlay_event:
- /* By analogy with the thread event, GDB should not stop for these. */
- printf_filtered ("Overlay 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);
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "reason", "watchpoint-trigger");
- mention (bs->breakpoint_at);
- ui_out_tuple_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_tuple_end (uiout);
- ui_out_text (uiout, "\n");
- 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:
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "reason", "read-watchpoint-trigger");
- mention (bs->breakpoint_at);
- ui_out_tuple_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_tuple_end (uiout);
- ui_out_text (uiout, "\n");
- return PRINT_UNKNOWN;
- break;
-
- case bp_access_watchpoint:
- if (bs->old_val != NULL)
- {
- annotate_watchpoint (bs->breakpoint_at->number);
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "reason", "access-watchpoint-trigger");
- mention (bs->breakpoint_at);
- ui_out_tuple_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 (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "reason", "access-watchpoint-trigger");
- ui_out_tuple_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_tuple_end (uiout);
- ui_out_text (uiout, "\n");
- return PRINT_UNKNOWN;
- break;
-
- /* Fall through, we don't deal with these types of breakpoints
- here. */
-
- case bp_finish:
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "reason", "function-finished");
- return PRINT_UNKNOWN;
- break;
-
- case bp_until:
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "reason", "location-reached");
- 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)
-{
- struct value *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 (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;
-}
-
-/* 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 = frame_find_by_id (b->watchpoint_frame);
- within_current_scope = (fr != NULL);
- /* in_function_epilogue_p() returns a non-zero value if we're still
- in the function but the stack frame has already been invalidated.
- Since we can't rely on the values of local variables after the
- stack has been destroyed, we are treating the watchpoint in that
- state as `not changed' without further checking. */
- if (within_current_scope && fr == get_current_frame ()
- && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ()))
- return WP_VALUE_NOT_CHANGED;
- 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);
- }
-
- 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. */
-
- struct value *mark = value_mark ();
- struct value *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. */
- if (ui_out_is_mi_like_p (uiout))
- 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");
-
- if (b->related_breakpoint)
- b->related_breakpoint->disposition = disp_del_at_next_stop;
- b->disposition = disp_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_SW_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_sw_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. The
- "not_a_sw_breakpoint" argument is meant to distinguish between a
- breakpoint trap event and a trace/singlestep trap event. For a
- trace/singlestep trap event, we would not want to subtract
- DECR_PC_AFTER_BREAK from the PC. */
-
- bp_addr = *pc - (not_a_sw_breakpoint ? 0 : DECR_PC_AFTER_BREAK);
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->enable_state == bp_disabled
- || b->enable_state == bp_shlib_disabled
- || b->enable_state == bp_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 */
- continue;
- if (overlay_debugging /* unmapped overlay section */
- && section_is_overlay (b->section)
- && !section_is_mapped (b->section))
- continue;
- }
-
- if (b->type == bp_hardware_breakpoint)
- {
- if (b->address != (*pc - DECR_PC_AFTER_HW_BREAK))
- continue;
- if (overlay_debugging /* unmapped overlay section */
- && section_is_overlay (b->section)
- && !section_is_mapped (b->section))
- 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 = disp_del_at_next_stop;
- b->disposition = disp_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;
- struct value *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 = disp_del_at_next_stop;
- b->disposition = disp_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 ());
- 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 == disp_disable)
- b->enable_state = bp_disabled;
- bs->commands = copy_command_lines (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;
-}
-
-/* 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 PC_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:
- case bp_overlay_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_state == bp_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_state == bp_enabled) &&
- (b->inserted) &&
- ((b->type == bp_hardware_watchpoint) ||
- (b->type == bp_read_watchpoint) ||
- (b->type == bp_access_watchpoint)))
- return 1;
- return 0;
-}
-
-
-/* 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_overlay_event, "overlay 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];
- struct ui_stream *stb = ui_out_stream_new (uiout);
- struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb);
-
- annotate_record ();
- ui_out_tuple_begin (uiout, "bkpt");
-
- /* 1 */
- annotate_field (0);
- ui_out_field_int (uiout, "number", b->number);
-
- /* 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);
- ui_out_field_string (uiout, "type", bptypes[(int) b->type].description);
-
- /* 3 */
- annotate_field (2);
- ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]);
-
- /* 4 */
- annotate_field (3);
- ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]);
- ui_out_spaces (uiout, 2);
-
- /* 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). */
- if (addressprint)
- ui_out_field_skip (uiout, "addr");
- annotate_field (5);
- print_expression (b->exp, stb->stream);
- ui_out_field_stream (uiout, "what", stb);
- 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). */
- 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, "\" ");
- }
- 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). */
- 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);
- }
-
- 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). */
- 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, "\" ");
- }
- 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). */
- if (addressprint)
- ui_out_field_skip (uiout, "addr");
- annotate_field (5);
- ui_out_field_string (uiout, "what", "exception catch");
- ui_out_spaces (uiout, 1);
- 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). */
- if (addressprint)
- ui_out_field_skip (uiout, "addr");
- annotate_field (5);
- ui_out_field_string (uiout, "what", "exception throw");
- ui_out_spaces (uiout, 1);
- 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:
- case bp_overlay_event:
- 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);
- }
- break;
- }
-
- if (b->thread != -1)
- {
- /* 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);
- }
-
- ui_out_text (uiout, "\n");
-
- if (b->frame)
- {
- annotate_field (6);
- ui_out_text (uiout, "\tstop only in stack frame at ");
- ui_out_field_core_addr (uiout, "frame", b->frame);
- ui_out_text (uiout, "\n");
- }
-
- if (b->cond)
- {
- annotate_field (7);
- 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");
- }
-
- if (b->thread != -1)
- {
- /* FIXME should make an annotation for this */
- ui_out_text (uiout, "\tstop only in thread ");
- ui_out_field_int (uiout, "thread", b->thread);
- ui_out_text (uiout, "\n");
- }
-
- if (show_breakpoint_hit_counts && b->hit_count)
- {
- /* FIXME should make an annotation for this */
- 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");
- }
-
- /* Output the count also if it is zero, but only if this is
- mi. FIXME: Should have a better test for this. */
- if (ui_out_is_mi_like_p (uiout))
- if (show_breakpoint_hit_counts && b->hit_count == 0)
- ui_out_field_int (uiout, "times", b->hit_count);
-
- if (b->ignore_count)
- {
- annotate_field (8);
- ui_out_text (uiout, "\tignore next ");
- ui_out_field_int (uiout, "ignore", b->ignore_count);
- ui_out_text (uiout, " hits\n");
- }
-
- if ((l = b->commands))
- {
- annotate_field (9);
- ui_out_tuple_begin (uiout, "script");
- print_command_lines (uiout, l, 4);
- ui_out_tuple_end (uiout);
- }
- ui_out_tuple_end (uiout);
- do_cleanups (old_chain);
-}
-
-struct captured_breakpoint_query_args
- {
- int bnum;
- };
-
-static int
-do_captured_breakpoint_query (struct ui_out *uiout, 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 (struct ui_out *uiout, 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_exceptions (uiout, do_captured_breakpoint_query, &args,
- NULL, RETURN_MASK_ALL);
-}
-
-/* Return non-zero if B is user settable (breakpoints, watchpoints,
- catchpoints, et.al.). */
-
-static int
-user_settable_breakpoint (const struct breakpoint *b)
-{
- return (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);
-}
-
-/* Print information on user settable breakpoint (watchpoint, etc)
- number BNUM. If BNUM is -1 print all user settable breakpoints.
- If ALLFLAG is non-zero, include non- user settable breakpoints. */
-
-static void
-breakpoint_1 (int bnum, int allflag)
-{
- register struct breakpoint *b;
- CORE_ADDR last_addr = (CORE_ADDR) -1;
- int nr_printable_breakpoints;
-
- /* Compute the number of rows in the table. */
- nr_printable_breakpoints = 0;
- ALL_BREAKPOINTS (b)
- if (bnum == -1
- || bnum == b->number)
- {
- if (allflag || user_settable_breakpoint (b))
- nr_printable_breakpoints++;
- }
-
- if (addressprint)
- ui_out_table_begin (uiout, 6, nr_printable_breakpoints, "BreakpointTable");
- else
- ui_out_table_begin (uiout, 5, nr_printable_breakpoints, "BreakpointTable");
-
- if (nr_printable_breakpoints > 0)
- annotate_breakpoints_headers ();
- if (nr_printable_breakpoints > 0)
- annotate_field (0);
- ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */
- if (nr_printable_breakpoints > 0)
- annotate_field (1);
- ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */
- if (nr_printable_breakpoints > 0)
- annotate_field (2);
- ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */
- if (nr_printable_breakpoints > 0)
- annotate_field (3);
- ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */
- if (addressprint)
- {
- if (nr_printable_breakpoints > 0)
- annotate_field (4);
- if (TARGET_ADDR_BIT <= 32)
- ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */
- else
- ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */
- }
- if (nr_printable_breakpoints > 0)
- annotate_field (5);
- ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */
- ui_out_table_body (uiout);
- if (nr_printable_breakpoints > 0)
- annotate_breakpoints_table ();
-
- ALL_BREAKPOINTS (b)
- if (bnum == -1
- || bnum == b->number)
- {
- /* We only print out user settable breakpoints unless the
- allflag is set. */
- if (allflag || user_settable_breakpoint (b))
- print_one_breakpoint (b, &last_addr);
- }
-
- ui_out_table_end (uiout);
-
- if (nr_printable_breakpoints == 0)
- {
- 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
- {
- /* 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);
- }
-
- /* 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) /* address match / overlay match */
- if (!overlay_debugging || b->section == section)
- others++;
- if (others > 0)
- {
- printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : "");
- ALL_BREAKPOINTS (b)
- if (b->address == pc) /* address match / overlay match */
- if (!overlay_debugging || b->section == section)
- {
- others--;
- printf_filtered ("%d%s%s ",
- b->number,
- ((b->enable_state == bp_disabled ||
- b->enable_state == bp_shlib_disabled ||
- b->enable_state == bp_call_disabled)
- ? " (disabled)"
- : b->enable_state == bp_permanent
- ? " (permanent)"
- : ""),
- (others > 1) ? ","
- : ((others == 1) ? " and" : ""));
- }
- printf_filtered ("also set at pc ");
- print_address_numeric (pc, 1, gdb_stdout);
- printf_filtered (".\n");
- }
-}
-
-/* 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;
-}
-
-/* Return true iff it is meaningful to use the address member of
- BPT. For some breakpoint types, the address member is irrelevant
- and it makes no sense to attempt to compare it to other addresses
- (or use it for any other purpose either).
-
- More specifically, each of the following breakpoint types will always
- have a zero valued address and we don't want check_duplicates() to mark
- breakpoints of any of these types to be a duplicate of an actual
- breakpoint at address zero:
-
- bp_watchpoint
- bp_hardware_watchpoint
- bp_read_watchpoint
- bp_access_watchpoint
- bp_catch_exec
- bp_longjmp_resume
- bp_catch_fork
- bp_catch_vork */
-
-static int
-breakpoint_address_is_meaningful (struct breakpoint *bpt)
-{
- enum bptype type = bpt->type;
-
- return (type != bp_watchpoint
- && type != bp_hardware_watchpoint
- && type != bp_read_watchpoint
- && type != bp_access_watchpoint
- && type != bp_catch_exec
- && type != bp_longjmp_resume
- && type != bp_catch_fork
- && type != bp_catch_vfork);
-}
-
-/* Rescan breakpoints at the same address and section as BPT,
- marking the first one as "first" and any others as "duplicates".
- This is so that the bpt instruction is only inserted once.
- If we have a permanent breakpoint at the same place as BPT, make
- that one the official one, and the rest as duplicates. */
-
-static void
-check_duplicates (struct breakpoint *bpt)
-{
- register struct breakpoint *b;
- register int count = 0;
- struct breakpoint *perm_bp = 0;
- CORE_ADDR address = bpt->address;
- asection *section = bpt->section;
-
- if (! breakpoint_address_is_meaningful (bpt))
- return;
-
- ALL_BREAKPOINTS (b)
- if (b->enable_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_call_disabled
- && b->address == address /* address / overlay match */
- && (!overlay_debugging || b->section == section)
- && breakpoint_address_is_meaningful (b))
- {
- /* Have we found a permanent breakpoint? */
- if (b->enable_state == bp_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_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_call_disabled
- && b->address == address /* address / overlay match */
- && (!overlay_debugging || b->section == section)
- && breakpoint_address_is_meaningful (b))
- b->duplicate = 1;
- }
- }
-}
-
-/* set_raw_breakpoint() is a low level routine for allocating and
- partially initializing a breakpoint of type BPTYPE. The newly
- created breakpoint's address, section, source file name, and line
- number are provided by SAL. The newly created and partially
- initialized breakpoint is added to the breakpoint chain and
- is also returned as the value of this function.
-
- It is expected that the caller will complete the initialization of
- the newly created breakpoint struct as well as output any status
- information regarding the creation of a new breakpoint. In
- particular, set_raw_breakpoint() does NOT set the breakpoint
- number! Care should be taken to not allow an error() to occur
- prior to completing the initialization of the breakpoint. If this
- should happen, a bogus breakpoint will be left on the chain. */
-
-struct breakpoint *
-set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype)
-{
- 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->type = bptype;
- b->language = current_language->la_language;
- b->input_radix = input_radix;
- b->thread = -1;
- b->line_number = sal.line;
- b->enable_state = bp_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 (b);
- 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_state = bp_permanent;
-
- /* By definition, permanent breakpoints are already present in the code. */
- b->inserted = 1;
-}
-
-static struct breakpoint *
-create_internal_breakpoint (CORE_ADDR address, enum bptype type)
-{
- static int internal_breakpoint_number = -1;
- struct symtab_and_line sal;
- struct breakpoint *b;
-
- INIT_SAL (&sal); /* initialize to zeroes */
-
- sal.pc = address;
- sal.section = find_pc_overlay (sal.pc);
-
- b = set_raw_breakpoint (sal, type);
- b->number = internal_breakpoint_number--;
- b->disposition = disp_donttouch;
-
- return b;
-}
-
-
-static void
-create_longjmp_breakpoint (char *func_name)
-{
- struct breakpoint *b;
- struct minimal_symbol *m;
-
- if (func_name == NULL)
- b = create_internal_breakpoint (0, bp_longjmp_resume);
- else
- {
- if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL)
- return;
-
- b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp);
- }
-
- b->enable_state = bp_disabled;
- b->silent = 1;
- if (func_name)
- b->addr_string = xstrdup (func_name);
-}
-
-/* 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_state = bp_enabled;
- check_duplicates (b);
- }
-}
-
-void
-disable_longjmp_breakpoint (void)
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->type == bp_longjmp
- || b->type == bp_longjmp_resume)
- {
- b->enable_state = bp_disabled;
- check_duplicates (b);
- }
-}
-
-static void
-create_overlay_event_breakpoint (char *func_name)
-{
- struct breakpoint *b;
- struct minimal_symbol *m;
-
- if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL)
- return;
-
- b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m),
- bp_overlay_event);
- b->addr_string = xstrdup (func_name);
-
- if (overlay_debugging == ovly_auto)
- {
- b->enable_state = bp_enabled;
- overlay_events_enabled = 1;
- }
- else
- {
- b->enable_state = bp_disabled;
- overlay_events_enabled = 0;
- }
-}
-
-void
-enable_overlay_breakpoints (void)
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->type == bp_overlay_event)
- {
- b->enable_state = bp_enabled;
- check_duplicates (b);
- overlay_events_enabled = 1;
- }
-}
-
-void
-disable_overlay_breakpoints (void)
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->type == bp_overlay_event)
- {
- b->enable_state = bp_disabled;
- check_duplicates (b);
- overlay_events_enabled = 0;
- }
-}
-
-struct breakpoint *
-create_thread_event_breakpoint (CORE_ADDR address)
-{
- struct breakpoint *b;
- char addr_string[80]; /* Surely an addr can't be longer than that. */
-
- b = create_internal_breakpoint (address, bp_thread_event);
-
- b->enable_state = bp_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;
-
- b = create_internal_breakpoint (address, 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_state == bp_enabled &&
- !b->duplicate &&
- PC_SOLIB (b->address))
- {
- b->enable_state = bp_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_state == bp_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_state = bp_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], bp_kind);
- 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_state = bp_enabled;
- b->disposition = tempflag ? disp_del : disp_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);
- }
-
- mention (b);
- do_cleanups (old_chain);
-}
-
-void
-create_solib_load_event_breakpoint (char *hookname, int tempflag,
- char *dll_pathname, char *cond_string)
-{
- solib_load_unload_1 (hookname, tempflag, dll_pathname,
- cond_string, bp_catch_load);
-}
-
-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);
-}
-
-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. */
-
- INIT_SAL (&sal);
- sal.pc = 0;
- sal.symtab = NULL;
- sal.line = 0;
-
- b = set_raw_breakpoint (sal, bp_kind);
- 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_state = bp_enabled;
- b->disposition = tempflag ? disp_del : disp_donttouch;
- b->forked_inferior_pid = 0;
-
- mention (b);
-}
-
-void
-create_fork_event_catchpoint (int tempflag, char *cond_string)
-{
- create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork);
-}
-
-void
-create_vfork_event_catchpoint (int tempflag, char *cond_string)
-{
- create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork);
-}
-
-void
-create_exec_event_catchpoint (int tempflag, char *cond_string)
-{
- struct symtab_and_line sal;
- struct breakpoint *b;
- int thread = -1; /* All threads. */
-
- INIT_SAL (&sal);
- sal.pc = 0;
- sal.symtab = NULL;
- sal.line = 0;
-
- b = set_raw_breakpoint (sal, bp_catch_exec);
- 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_state = bp_enabled;
- b->disposition = tempflag ? disp_del : disp_donttouch;
-
- mention (b);
-}
-
-static int
-hw_breakpoint_used_count (void)
-{
- register struct breakpoint *b;
- int i = 0;
-
- ALL_BREAKPOINTS (b)
- {
- if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled)
- i++;
- }
-
- return i;
-}
-
-static int
-hw_watchpoint_used_count (enum bptype type, int *other_type_used)
-{
- register struct breakpoint *b;
- int i = 0;
-
- *other_type_used = 0;
- ALL_BREAKPOINTS (b)
- {
- if (b->enable_state == bp_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_state == bp_enabled)
- *other_type_used = 1;
- }
- }
- return i;
-}
-
-/* Call this after hitting the longjmp() breakpoint. Use this to set
- a new breakpoint at the target of the jmp_buf.
-
- FIXME - This ought to be done by setting a temporary breakpoint
- that gets deleted automatically... */
-
-void
-set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_info *frame)
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->type == bp_longjmp_resume)
- {
- b->address = pc;
- b->enable_state = bp_enabled;
- if (frame != NULL)
- b->frame = frame->frame;
- else
- b->frame = 0;
- check_duplicates (b);
- return;
- }
-}
-
-void
-disable_watchpoints_before_interactive_call_start (void)
-{
- struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- {
- if (((b->type == bp_watchpoint)
- || (b->type == bp_hardware_watchpoint)
- || (b->type == bp_read_watchpoint)
- || (b->type == bp_access_watchpoint)
- || ep_is_exception_catchpoint (b))
- && (b->enable_state == bp_enabled))
- {
- b->enable_state = bp_call_disabled;
- check_duplicates (b);
- }
- }
-}
-
-void
-enable_watchpoints_after_interactive_call_stop (void)
-{
- struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- {
- if (((b->type == bp_watchpoint)
- || (b->type == bp_hardware_watchpoint)
- || (b->type == bp_read_watchpoint)
- || (b->type == bp_access_watchpoint)
- || ep_is_exception_catchpoint (b))
- && (b->enable_state == bp_call_disabled))
- {
- b->enable_state = bp_enabled;
- check_duplicates (b);
- }
- }
-}
-
-
-/* Set a breakpoint that will evaporate an end of command
- at address specified by SAL.
- Restrict it to frame FRAME if FRAME is nonzero. */
-
-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, type);
- b->enable_state = bp_enabled;
- b->disposition = disp_donttouch;
- b->frame = (frame ? frame->frame : 0);
-
- /* If we're debugging a multi-threaded program, then we
- want momentary breakpoints to be active in only a
- single thread of control. */
- if (in_thread_list (inferior_ptid))
- b->thread = pid_to_thread_id (inferior_ptid);
-
- return b;
-}
-
-
-/* Tell the user we have just set a breakpoint B. */
-
-static void
-mention (struct breakpoint *b)
-{
- int say_where = 0;
- struct cleanup *old_chain;
- struct ui_stream *stb;
-
- stb = ui_out_stream_new (uiout);
- old_chain = make_cleanup_ui_out_stream_delete (stb);
-
- /* 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;
- case bp_watchpoint:
- ui_out_text (uiout, "Watchpoint ");
- ui_out_tuple_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_tuple_end (uiout);
- break;
- case bp_hardware_watchpoint:
- ui_out_text (uiout, "Hardware watchpoint ");
- ui_out_tuple_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_tuple_end (uiout);
- break;
- case bp_read_watchpoint:
- ui_out_text (uiout, "Hardware read watchpoint ");
- ui_out_tuple_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_tuple_end (uiout);
- break;
- case bp_access_watchpoint:
- ui_out_text (uiout, "Hardware access (read/write) watchpoint ");
- ui_out_tuple_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_tuple_end (uiout);
- break;
- case bp_breakpoint:
- if (ui_out_is_mi_like_p (uiout))
- {
- say_where = 0;
- break;
- }
- printf_filtered ("Breakpoint %d", b->number);
- say_where = 1;
- break;
- case bp_hardware_breakpoint:
- if (ui_out_is_mi_like_p (uiout))
- {
- say_where = 0;
- break;
- }
- printf_filtered ("Hardware assisted breakpoint %d", b->number);
- say_where = 1;
- break;
- case bp_catch_load:
- case bp_catch_unload:
- printf_filtered ("Catchpoint %d (%s %s)",
- b->number,
- (b->type == bp_catch_load) ? "load" : "unload",
- (b->dll_pathname != NULL) ?
- b->dll_pathname : "<any library>");
- break;
- case bp_catch_fork:
- case bp_catch_vfork:
- printf_filtered ("Catchpoint %d (%s)",
- b->number,
- (b->type == bp_catch_fork) ? "fork" : "vfork");
- break;
- case bp_catch_exec:
- printf_filtered ("Catchpoint %d (exec)",
- b->number);
- break;
- case bp_catch_catch:
- case bp_catch_throw:
- printf_filtered ("Catchpoint %d (%s)",
- b->number,
- (b->type == bp_catch_catch) ? "catch" : "throw");
- break;
-
- case bp_until:
- case bp_finish:
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_step_resume:
- case bp_through_sigtramp:
- case bp_call_dummy:
- case bp_watchpoint_scope:
- case bp_shlib_event:
- case bp_thread_event:
- case bp_overlay_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);
- }
- do_cleanups (old_chain);
- if (ui_out_is_mi_like_p (uiout))
- return;
- printf_filtered ("\n");
-}
-
-
-/* Add SALS.nelts breakpoints to the breakpoint table. For each
- SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
- COND[i] and COND_STRING[i] values.
-
- NOTE: If the function succeeds, the caller is expected to cleanup
- the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the
- array contents). If the function fails (error() is called), the
- caller is expected to cleanups both the ADDR_STRING, COND_STRING,
- COND and SALS arrays and each of those arrays contents. */
-
-static void
-create_breakpoints (struct symtabs_and_lines sals, char **addr_string,
- struct expression **cond, char **cond_string,
- enum bptype type, enum bpdisp disposition,
- int thread, int ignore_count, int from_tty)
-{
- if (type == bp_hardware_breakpoint)
- {
- int i = hw_breakpoint_used_count ();
- int target_resources_ok =
- TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint,
- i + sals.nelts, 0);
- if (target_resources_ok == 0)
- error ("No hardware breakpoint support in the target.");
- else if (target_resources_ok < 0)
- error ("Hardware breakpoints used exceeds limit.");
- }
-
- /* Now set all the breakpoints. */
- {
- int i;
- for (i = 0; i < sals.nelts; i++)
- {
- struct breakpoint *b;
- struct symtab_and_line sal = sals.sals[i];
-
- if (from_tty)
- describe_other_breakpoints (sal.pc, sal.section);
-
- b = set_raw_breakpoint (sal, type);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- 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_state = bp_enabled;
- b->disposition = disposition;
- mention (b);
- }
- }
-}
-
-/* Parse ARG which is assumed to be a SAL specification possibly
- followed by conditionals. On return, SALS contains an array of SAL
- addresses found. ADDR_STRING contains a vector of (canonical)
- address strings. ARG points to the end of the SAL. */
-
-void
-parse_breakpoint_sals (char **address,
- struct symtabs_and_lines *sals,
- char ***addr_string)
-{
- char *addr_start = *address;
- *addr_string = NULL;
- /* If no arg given, or if first arg is 'if ', use the default
- breakpoint. */
- if ((*address) == NULL
- || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2])))
- {
- if (default_breakpoint_valid)
- {
- struct symtab_and_line sal;
- INIT_SAL (&sal); /* initialize to zeroes */
- sals->sals = (struct symtab_and_line *)
- xmalloc (sizeof (struct symtab_and_line));
- sal.pc = default_breakpoint_address;
- sal.line = default_breakpoint_line;
- sal.symtab = default_breakpoint_symtab;
- sal.section = find_pc_overlay (sal.pc);
- sals->sals[0] = sal;
- sals->nelts = 1;
- }
- else
- error ("No default breakpoint address now.");
- }
- else
- {
- /* Force almost all breakpoints to be in terms of the
- current_source_symtab (which is decode_line_1's default). This
- should produce the results we want almost all of the time while
- leaving default_breakpoint_* alone. */
- if (default_breakpoint_valid
- && (!current_source_symtab
- || (strchr ("+-", (*address)[0]) != NULL)))
- *sals = decode_line_1 (address, 1, default_breakpoint_symtab,
- default_breakpoint_line, addr_string);
- else
- *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string);
- }
- /* For any SAL that didn't have a canonical string, fill one in. */
- if (sals->nelts > 0 && *addr_string == NULL)
- *addr_string = xcalloc (sals->nelts, sizeof (char **));
- if (addr_start != (*address))
- {
- int i;
- for (i = 0; i < sals->nelts; i++)
- {
- /* Add the string if not present. */
- if ((*addr_string)[i] == NULL)
- (*addr_string)[i] = savestring (addr_start, (*address) - addr_start);
- }
- }
-}
-
-
-/* Convert each SAL into a real PC. Verify that the PC can be
- inserted as a breakpoint. If it can't throw an error. */
-
-void
-breakpoint_sals_to_pc (struct symtabs_and_lines *sals,
- char *address)
-{
- int i;
- for (i = 0; i < sals->nelts; i++)
- {
- resolve_sal_pc (&sals->sals[i]);
-
- /* It's possible for the PC to be nonzero, but still an illegal
- value on some targets.
-
- For example, on HP-UX if you start gdb, and before running the
- inferior you try to set a breakpoint on a shared library function
- "foo" where the inferior doesn't call "foo" directly but does
- pass its address to another function call, then we do find a
- minimal symbol for the "foo", but it's address is invalid.
- (Appears to be an index into a table that the loader sets up
- when the inferior is run.)
-
- Give the target a chance to bless sals.sals[i].pc before we
- try to make a breakpoint for it. */
- if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc))
- {
- if (address == NULL)
- error ("Cannot break without a running program.");
- else
- error ("Cannot break on %s without a running program.",
- address);
- }
- }
-}
-
-/* Set a breakpoint according to ARG (function, linenum or *address)
- flag: first bit : 0 non-temporary, 1 temporary.
- second bit : 0 normal breakpoint, 1 hardware breakpoint. */
-
-static void
-break_command_1 (char *arg, int flag, int from_tty)
-{
- int tempflag, hardwareflag;
- struct symtabs_and_lines sals;
- register struct expression **cond = 0;
- /* Pointers in arg to the start, and one past the end, of the
- condition. */
- char **cond_string = (char **) NULL;
- char *addr_start = arg;
- char **addr_string;
- struct cleanup *old_chain;
- struct cleanup *breakpoint_chain = NULL;
- int i;
- int thread = -1;
- int ignore_count = 0;
-
- hardwareflag = flag & BP_HARDWAREFLAG;
- tempflag = flag & BP_TEMPFLAG;
-
- sals.sals = NULL;
- sals.nelts = 0;
- addr_string = NULL;
- parse_breakpoint_sals (&arg, &sals, &addr_string);
-
- if (!sals.nelts)
- return;
-
- /* Create a chain of things that always need to be cleaned up. */
- old_chain = make_cleanup (null_cleanup, 0);
-
- /* Make sure that all storage allocated to SALS gets freed. */
- make_cleanup (xfree, sals.sals);
-
- /* Cleanup the addr_string array but not its contents. */
- make_cleanup (xfree, addr_string);
-
- /* Allocate space for all the cond expressions. */
- cond = xcalloc (sals.nelts, sizeof (struct expression *));
- make_cleanup (xfree, cond);
-
- /* 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 succeeds
- then the memory is not reclaimed. */
- breakpoint_chain = make_cleanup (null_cleanup, 0);
-
- /* Mark the contents of the addr_string for cleanup. These go on
- the breakpoint_chain and only occure if the breakpoint create
- fails. */
- for (i = 0; i < sals.nelts; i++)
- {
- if (addr_string[i] != NULL)
- make_cleanup (xfree, addr_string[i]);
- }
-
- /* Resolve all line numbers to PC's and verify that the addresses
- are ok for the target. */
- breakpoint_sals_to_pc (&sals, addr_start);
-
- /* Verify that condition can be parsed, before setting any
- breakpoints. Allocate a separate condition expression for each
- breakpoint. */
- thread = -1; /* No specific thread yet */
- for (i = 0; i < sals.nelts; i++)
- {
- char *tok = arg;
- while (tok && *tok)
- {
- char *end_tok;
- int toklen;
- char *cond_start = NULL;
- char *cond_end = NULL;
- while (*tok == ' ' || *tok == '\t')
- tok++;
-
- end_tok = tok;
-
- while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
- end_tok++;
-
- toklen = end_tok - tok;
-
- if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
- {
- tok = cond_start = end_tok + 1;
- cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
- make_cleanup (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 ? disp_del : disp_donttouch,
- thread, ignore_count, from_tty);
-
- if (sals.nelts > 1)
- {
- warning ("Multiple breakpoints were set.");
- warning ("Use the \"delete\" command to delete unwanted breakpoints.");
- }
- /* That's it. Discard the cleanups for data inserted into the
- breakpoint. */
- discard_cleanups (breakpoint_chain);
- /* But cleanup everything else. */
- do_cleanups (old_chain);
-}
-
-/* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
- linenum or *address) with COND and IGNORE_COUNT. */
-
-struct captured_breakpoint_args
- {
- char *address;
- char *condition;
- int hardwareflag;
- int tempflag;
- int thread;
- int ignore_count;
- };
-
-static int
-do_captured_breakpoint (void *data)
-{
- struct captured_breakpoint_args *args = data;
- struct symtabs_and_lines sals;
- register struct expression **cond;
- struct cleanup *old_chain;
- struct cleanup *breakpoint_chain = NULL;
- int i;
- char **addr_string;
- char **cond_string;
-
- char *address_end;
-
- /* Parse the source and lines spec. Delay check that the expression
- didn't contain trailing garbage until after cleanups are in
- place. */
- sals.sals = NULL;
- sals.nelts = 0;
- address_end = args->address;
- addr_string = NULL;
- parse_breakpoint_sals (&address_end, &sals, &addr_string);
-
- if (!sals.nelts)
- return GDB_RC_NONE;
-
- /* Create a chain of things at always need to be cleaned up. */
- old_chain = make_cleanup (null_cleanup, 0);
-
- /* Always have a addr_string array, even if it is empty. */
- make_cleanup (xfree, addr_string);
-
- /* Make sure that all storage allocated to SALS gets freed. */
- make_cleanup (xfree, sals.sals);
-
- /* Allocate space for all the cond expressions. */
- cond = xcalloc (sals.nelts, sizeof (struct expression *));
- make_cleanup (xfree, cond);
-
- /* 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);
-
- /* Mark the contents of the addr_string for cleanup. These go on
- the breakpoint_chain and only occure if the breakpoint create
- fails. */
- for (i = 0; i < sals.nelts; i++)
- {
- if (addr_string[i] != NULL)
- make_cleanup (xfree, addr_string[i]);
- }
-
- /* Wait until now before checking for garbage at the end of the
- address. That way cleanups can take care of freeing any
- memory. */
- if (*address_end != '\0')
- error ("Garbage %s following breakpoint address", address_end);
-
- /* Resolve all line numbers to PC's. */
- breakpoint_sals_to_pc (&sals, args->address);
-
- /* Verify that conditions can be parsed, before setting any
- breakpoints. */
- for (i = 0; i < sals.nelts; i++)
- {
- if (args->condition != NULL)
- {
- char *tok = args->condition;
- cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
- if (*tok != '\0')
- error ("Garbage %s follows condition", tok);
- make_cleanup (xfree, cond[i]);
- cond_string[i] = xstrdup (args->condition);
- }
- }
-
- create_breakpoints (sals, addr_string, cond, cond_string,
- args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint,
- args->tempflag ? disp_del : disp_donttouch,
- args->thread, args->ignore_count, 0/*from-tty*/);
-
- /* That's it. Discard the cleanups for data inserted into the
- breakpoint. */
- discard_cleanups (breakpoint_chain);
- /* But cleanup everything else. */
- do_cleanups (old_chain);
- return GDB_RC_OK;
-}
-
-enum gdb_rc
-gdb_breakpoint (char *address, char *condition,
- int hardwareflag, int tempflag,
- int thread, int ignore_count)
-{
- struct captured_breakpoint_args args;
- args.address = address;
- args.condition = condition;
- args.hardwareflag = hardwareflag;
- args.tempflag = tempflag;
- args.thread = thread;
- args.ignore_count = ignore_count;
- return catch_errors (do_captured_breakpoint, &args,
- NULL, RETURN_MASK_ALL);
-}
-
-
-static void
-break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty)
-{
- struct frame_info *frame;
- CORE_ADDR low, high, selected_pc = 0;
- char *extra_args = 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')))
- {
-
- if (default_breakpoint_valid)
- {
- if (selected_frame)
- {
- selected_pc = selected_frame->pc;
- if (arg)
- if_arg = 1;
- }
- else
- error ("No selected frame.");
- }
- else
- error ("No default breakpoint address now.");
- }
- else
- {
- extra_args = strchr (arg, ' ');
- if (extra_args)
- {
- extra_args++;
- extra_args_len = strlen (extra_args);
- level_arg = (char *) xmalloc (extra_args - arg);
- strncpy (level_arg, arg, extra_args - arg - 1);
- level_arg[extra_args - arg - 1] = '\0';
- }
- else
- {
- level_arg = (char *) xmalloc (strlen (arg) + 1);
- strcpy (level_arg, arg);
- }
-
- frame = parse_frame_specification (level_arg);
- if (frame)
- selected_pc = frame->pc;
- else
- selected_pc = 0;
- }
- if (if_arg)
- {
- extra_args = arg;
- extra_args_len = strlen (arg);
- }
-
- if (selected_pc)
- {
- if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high))
- {
- addr_string = (char *) xmalloc (26 + extra_args_len);
- if (extra_args_len)
- sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args);
- else
- sprintf (addr_string, "*0x%s", paddr_nz (high));
- break_command_1 (addr_string, flag, from_tty);
- xfree (addr_string);
- }
- else
- error ("No function contains the specified address");
- }
- else
- error ("Unable to set breakpoint at procedure exit");
-}
-
-
-static void
-break_at_finish_command_1 (char *arg, int flag, int from_tty)
-{
- char *addr_string, *break_string, *beg_addr_string;
- CORE_ADDR low, high;
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- struct cleanup *old_chain;
- char *extra_args = 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 (default_breakpoint_valid)
- {
- if (selected_frame)
- {
- addr_string = (char *) xmalloc (15);
- sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc));
- if (arg)
- if_arg = 1;
- }
- else
- error ("No selected frame.");
- }
- else
- error ("No default breakpoint address now.");
- }
- else
- {
- addr_string = (char *) xmalloc (strlen (arg) + 1);
- strcpy (addr_string, arg);
- }
-
- if (if_arg)
- {
- extra_args = arg;
- extra_args_len = strlen (arg);
- }
- else if (arg)
- {
- /* get the stuff after the function name or address */
- extra_args = strchr (arg, ' ');
- if (extra_args)
- {
- extra_args++;
- extra_args_len = strlen (extra_args);
- }
- }
-
- sals.sals = NULL;
- sals.nelts = 0;
-
- beg_addr_string = addr_string;
- sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0,
- (char ***) NULL);
-
- 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)
- {
- warning ("Multiple breakpoints were set.\n");
- warning ("Use the \"delete\" command to delete unwanted breakpoints.");
- }
- do_cleanups (old_chain);
-}
-
-
-/* Helper function for break_command_1 and disassemble_command. */
-
-void
-resolve_sal_pc (struct symtab_and_line *sal)
-{
- CORE_ADDR pc;
-
- if (sal->pc == 0 && sal->symtab != NULL)
- {
- if (!find_line_pc (sal->symtab, sal->line, &pc))
- error ("No line %d in file \"%s\".",
- sal->line, sal->symtab->filename);
- sal->pc = pc;
- }
-
- if (sal->section == 0 && sal->symtab != NULL)
- {
- struct blockvector *bv;
- struct block *b;
- struct symbol *sym;
- int index;
-
- bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab);
- if (bv != NULL)
- {
- b = BLOCKVECTOR_BLOCK (bv, index);
- sym = block_function (b);
- if (sym != NULL)
- {
- fixup_symbol_section (sym, sal->symtab->objfile);
- sal->section = SYMBOL_BFD_SECTION (sym);
- }
- else
- {
- /* It really is worthwhile to have the section, so we'll just
- have to look harder. This case can be executed if we have
- line numbers but no functions (as can happen in assembly
- source). */
-
- struct minimal_symbol *msym;
-
- msym = lookup_minimal_symbol_by_pc (sal->pc);
- if (msym)
- sal->section = SYMBOL_BFD_SECTION (msym);
- }
- }
- }
-}
-
-void
-break_command (char *arg, int from_tty)
-{
- break_command_1 (arg, 0, from_tty);
-}
-
-void
-break_at_finish_command (char *arg, int from_tty)
-{
- break_at_finish_command_1 (arg, 0, from_tty);
-}
-
-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);
-}
-
-void
-tbreak_at_finish_command (char *arg, int from_tty)
-{
- break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty);
-}
-
-static void
-hbreak_command (char *arg, int from_tty)
-{
- break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
-}
-
-static void
-thbreak_command (char *arg, int from_tty)
-{
- break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
-}
-
-static void
-stop_command (char *arg, int from_tty)
-{
- printf_filtered ("Specify the type of breakpoint to set.\n\
-Usage: stop in <function | address>\n\
- stop at <line>\n");
-}
-
-static void
-stopin_command (char *arg, int from_tty)
-{
- int badInput = 0;
-
- if (arg == (char *) NULL)
- badInput = 1;
- else if (*arg != '*')
- {
- char *argptr = arg;
- int hasColon = 0;
-
- /* look for a ':'. If this is a line number specification, then
- say it is bad, otherwise, it should be an address or
- function/method name */
- while (*argptr && !hasColon)
- {
- hasColon = (*argptr == ':');
- argptr++;
- }
-
- if (hasColon)
- badInput = (*argptr != ':'); /* Not a class::method */
- else
- badInput = isdigit (*arg); /* a simple line number */
- }
-
- if (badInput)
- printf_filtered ("Usage: stop in <function | address>\n");
- else
- break_command_1 (arg, 0, from_tty);
-}
-
-static void
-stopat_command (char *arg, int from_tty)
-{
- int badInput = 0;
-
- if (arg == (char *) NULL || *arg == '*') /* no line number */
- badInput = 1;
- else
- {
- char *argptr = arg;
- int hasColon = 0;
-
- /* look for a ':'. If there is a '::' then get out, otherwise
- it is probably a line number. */
- while (*argptr && !hasColon)
- {
- hasColon = (*argptr == ':');
- argptr++;
- }
-
- if (hasColon)
- badInput = (*argptr == ':'); /* we have class::method */
- else
- badInput = !isdigit (*arg); /* not a line number */
- }
-
- if (badInput)
- printf_filtered ("Usage: stop at <line>\n");
- else
- break_command_1 (arg, 0, from_tty);
-}
-
-/* ARGSUSED */
-/* accessflag: hw_write: watch write,
- hw_read: watch read,
- hw_access: watch access (read or write) */
-static void
-watch_command_1 (char *arg, int accessflag, int from_tty)
-{
- struct breakpoint *b;
- struct symtab_and_line sal;
- struct expression *exp;
- struct block *exp_valid_block;
- struct value *val, *mark;
- struct frame_info *frame;
- struct frame_info *prev_frame = NULL;
- char *exp_start = NULL;
- char *exp_end = NULL;
- char *tok, *end_tok;
- int toklen;
- char *cond_start = NULL;
- char *cond_end = NULL;
- struct expression *cond = NULL;
- int i, other_type_used, target_resources_ok = 0;
- enum bptype bp_type;
- int mem_cnt = 0;
-
- INIT_SAL (&sal); /* initialize to zeroes */
-
- /* Parse arguments. */
- innermost_block = NULL;
- exp_start = arg;
- exp = parse_exp_1 (&arg, 0, 0);
- exp_end = arg;
- exp_valid_block = innermost_block;
- mark = value_mark ();
- val = evaluate_expression (exp);
- release_value (val);
- if (VALUE_LAZY (val))
- value_fetch_lazy (val);
-
- tok = arg;
- while (*tok == ' ' || *tok == '\t')
- tok++;
- end_tok = tok;
-
- while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
- end_tok++;
-
- toklen = end_tok - tok;
- if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
- {
- tok = cond_start = end_tok + 1;
- cond = parse_exp_1 (&tok, 0, 0);
- cond_end = tok;
- }
- if (*tok)
- error ("Junk at end of command.");
-
- if (accessflag == hw_read)
- bp_type = bp_read_watchpoint;
- else if (accessflag == hw_access)
- bp_type = bp_access_watchpoint;
- else
- bp_type = bp_hardware_watchpoint;
-
- mem_cnt = can_use_hardware_watchpoint (val);
- if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint)
- error ("Expression cannot be implemented with read/access watchpoint.");
- if (mem_cnt != 0)
- {
- i = hw_watchpoint_used_count (bp_type, &other_type_used);
- target_resources_ok =
- TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt,
- other_type_used);
- if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint)
- error ("Target does not support this type of hardware watchpoint.");
-
- if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint)
- error ("Target can only support one kind of HW watchpoint at a time.");
- }
-
-#if defined(HPUXHPPA)
- /* On HP-UX if you set a h/w
- watchpoint before the "run" command, the inferior dies with a e.g.,
- SIGILL once you start it. I initially believed this was due to a
- bad interaction between page protection traps and the initial
- startup sequence by the dynamic linker.
-
- However, I tried avoiding that by having HP-UX's implementation of
- TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_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 */
-
- /* Change the type of breakpoint to an ordinary watchpoint if a hardware
- watchpoint could not be set. */
- if (!mem_cnt || target_resources_ok <= 0)
- bp_type = bp_watchpoint;
-
- /* Now set up the breakpoint. */
- b = set_raw_breakpoint (sal, bp_type);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->disposition = disp_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 = 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);
- get_frame_id (frame, &b->watchpoint_frame);
- }
- else
- {
- memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame));
- }
-
- /* 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;
- scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame),
- bp_watchpoint_scope);
-
- scope_breakpoint->enable_state = bp_enabled;
-
- /* Automatically delete the breakpoint when it hits. */
- scope_breakpoint->disposition = disp_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;
-}
-
-void
-watch_command_wrapper (char *arg, int from_tty)
-{
- watch_command (arg, from_tty);
-}
-
-static void
-watch_command (char *arg, int from_tty)
-{
- watch_command_1 (arg, hw_write, from_tty);
-}
-
-void
-rwatch_command_wrapper (char *arg, int from_tty)
-{
- rwatch_command (arg, from_tty);
-}
-
-static void
-rwatch_command (char *arg, int from_tty)
-{
- watch_command_1 (arg, hw_read, from_tty);
-}
-
-void
-awatch_command_wrapper (char *arg, int from_tty)
-{
- awatch_command (arg, from_tty);
-}
-
-static void
-awatch_command (char *arg, int from_tty)
-{
- watch_command_1 (arg, hw_access, from_tty);
-}
-
-
-/* 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 (char *arg, int from_tty)
-{
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- struct frame_info *prev_frame = get_prev_frame (selected_frame);
- struct breakpoint *breakpoint;
- struct cleanup *old_chain;
- struct continuation_arg *arg1;
-
-
- clear_proceed_status ();
-
- /* Set a breakpoint where the user wants it and at return from
- this function */
-
- if (default_breakpoint_valid)
- sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
- default_breakpoint_line, (char ***) NULL);
- else
- 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];
- 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);
-
- 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)
- {
- sal = find_pc_line (prev_frame->pc, 0);
- sal.pc = prev_frame->pc;
- breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until);
- if (!event_loop_p || !target_can_async_p ())
- make_cleanup_delete_breakpoint (breakpoint);
- else
- make_exec_cleanup_delete_breakpoint (breakpoint);
- }
-
- proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
- /* Do 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);
-}
-
-#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 (char *name)
-{
-}
-
-static int
-disable_catch_breakpoint (void)
-{
-}
-
-static int
-delete_catch_breakpoint (void)
-{
-}
-
-static int
-enable_catch_breakpoint (void)
-{
-}
-#endif /* 0 */
-
-struct sal_chain
-{
- struct sal_chain *next;
- struct symtab_and_line sal;
-};
-
-#if 0
-/* Not really used -- invocation in handle_gnu_4_16_catch_command
- had been commented out in the v.4.16 sources, and stays
- disabled there now because "catch NAME" syntax isn't allowed.
- pai/1997-07-11 */
-/* This isn't used; I don't know what it was for. */
-/* For each catch clause identified in ARGS, run FUNCTION
- with that clause as an argument. */
-static struct symtabs_and_lines
-map_catch_names (char *args, int (*function) ())
-{
- register char *p = args;
- register char *p1;
- struct symtabs_and_lines sals;
-#if 0
- struct sal_chain *sal_chain = 0;
-#endif
-
- if (p == 0)
- error_no_arg ("one or more catch names");
-
- sals.nelts = 0;
- sals.sals = NULL;
-
- while (*p)
- {
- p1 = p;
- /* Don't swallow conditional part. */
- if (p1[0] == 'i' && p1[1] == 'f'
- && (p1[2] == ' ' || p1[2] == '\t'))
- break;
-
- if (isalpha (*p1))
- {
- p1++;
- while (isalnum (*p1) || *p1 == '_' || *p1 == '$')
- p1++;
- }
-
- if (*p1 && *p1 != ' ' && *p1 != '\t')
- error ("Arguments must be catch names.");
-
- *p1 = 0;
-#if 0
- if (function (p))
- {
- 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_unfiltered ("No catch clause for exception %s.\n", p);
-#if 0
- win:
-#endif
- p = p1;
- while (*p == ' ' || *p == '\t')
- p++;
- }
-}
-#endif
-
-/* This shares a lot of code with `print_frame_label_vars' from stack.c. */
-
-static struct symtabs_and_lines
-get_catch_sals (int this_level_only)
-{
- register struct blockvector *bl;
- register struct block *block;
- int index, have_default = 0;
- CORE_ADDR pc;
- struct symtabs_and_lines sals;
- struct sal_chain *sal_chain = 0;
- char *blocks_searched;
-
- /* Not sure whether an error message is always the correct response,
- but it's better than a core dump. */
- if (selected_frame == NULL)
- error ("No selected frame.");
- block = get_frame_block (selected_frame, 0);
- pc = selected_frame->pc;
-
- sals.nelts = 0;
- sals.sals = NULL;
-
- if (block == 0)
- error ("No symbol table info available.\n");
-
- bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
- blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
- memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
-
- while (block != 0)
- {
- CORE_ADDR end = BLOCK_END (block) - 4;
- int last_index;
-
- if (bl != blockvector_for_pc (end, &index))
- error ("blockvector blotch");
- if (BLOCKVECTOR_BLOCK (bl, index) != block)
- error ("blockvector botch");
- last_index = BLOCKVECTOR_NBLOCKS (bl);
- index += 1;
-
- /* Don't print out blocks that have gone by. */
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
- index++;
-
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
- {
- if (blocks_searched[index] == 0)
- {
- struct block *b = BLOCKVECTOR_BLOCK (bl, index);
- register int i;
- register struct symbol *sym;
-
- ALL_BLOCK_SYMBOLS (b, i, sym)
- {
- if (STREQ (SYMBOL_NAME (sym), "default"))
- {
- if (have_default)
- continue;
- have_default = 1;
- }
- if (SYMBOL_CLASS (sym) == LOC_LABEL)
- {
- struct sal_chain *next = (struct sal_chain *)
- alloca (sizeof (struct sal_chain));
- next->next = sal_chain;
- next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym),
- 0);
- sal_chain = next;
- }
- }
- blocks_searched[index] = 1;
- }
- index++;
- }
- if (have_default)
- break;
- if (sal_chain && this_level_only)
- break;
-
- /* After handling the function's top-level block, stop.
- Don't continue to its superblock, the block of
- per-file symbols. */
- if (BLOCK_FUNCTION (block))
- break;
- block = BLOCK_SUPERBLOCK (block);
- }
-
- if (sal_chain)
- {
- struct sal_chain *tmp_chain;
-
- /* Count the number of entries. */
- for (index = 0, tmp_chain = sal_chain; tmp_chain;
- tmp_chain = tmp_chain->next)
- index++;
-
- sals.nelts = index;
- sals.sals = (struct symtab_and_line *)
- xmalloc (index * sizeof (struct symtab_and_line));
- for (index = 0; sal_chain; sal_chain = sal_chain->next, index++)
- sals.sals[index] = sal_chain->sal;
- }
-
- return sals;
-}
-
-static void
-ep_skip_leading_whitespace (char **s)
-{
- if ((s == NULL) || (*s == NULL))
- return;
- while (isspace (**s))
- *s += 1;
-}
-
-/* This function examines a string, and attempts to find a token
- that might be an event name in the leading characters. If a
- possible match is found, a pointer to the last character of
- the token is returned. Else, NULL is returned. */
-
-static char *
-ep_find_event_name_end (char *arg)
-{
- char *s = arg;
- char *event_name_end = NULL;
-
- /* If we could depend upon the presense of strrpbrk, we'd use that... */
- if (arg == NULL)
- return NULL;
-
- /* We break out of the loop when we find a token delimiter.
- Basically, we're looking for alphanumerics and underscores;
- anything else delimites the token. */
- while (*s != '\0')
- {
- if (!isalnum (*s) && (*s != '_'))
- break;
- event_name_end = s;
- s++;
- }
-
- return event_name_end;
-}
-
-
-/* This function attempts to parse an optional "if <cond>" clause
- from the arg string. If one is not found, it returns NULL.
-
- Else, it returns a pointer to the condition string. (It does not
- attempt to evaluate the string against a particular block.) And,
- it updates arg to point to the first character following the parsed
- if clause in the arg string. */
-
-static char *
-ep_parse_optional_if_clause (char **arg)
-{
- char *cond_string;
-
- if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2]))
- return NULL;
-
- /* Skip the "if" keyword. */
- (*arg) += 2;
-
- /* Skip any extra leading whitespace, and record the start of the
- condition string. */
- ep_skip_leading_whitespace (arg);
- cond_string = *arg;
-
- /* Assume that the condition occupies the remainder of the arg string. */
- (*arg) += strlen (cond_string);
-
- return cond_string;
-}
-
-/* This function attempts to parse an optional filename from the arg
- string. If one is not found, it returns NULL.
-
- Else, it returns a pointer to the parsed filename. (This function
- makes no attempt to verify that a file of that name exists, or is
- accessible.) And, it updates arg to point to the first character
- following the parsed filename in the arg string.
-
- Note that clients needing to preserve the returned filename for
- future access should copy it to their own buffers. */
-static char *
-ep_parse_optional_filename (char **arg)
-{
- static char filename[1024];
- char *arg_p = *arg;
- int i;
- char c;
-
- if ((*arg_p == '\0') || isspace (*arg_p))
- return NULL;
-
- for (i = 0;; i++)
- {
- c = *arg_p;
- if (isspace (c))
- c = '\0';
- filename[i] = c;
- if (c == '\0')
- break;
- arg_p++;
- }
- *arg = arg_p;
-
- return filename;
-}
-
-/* Commands to deal with catching events, such as signals, exceptions,
- process start/exit, etc. */
-
-typedef enum
-{
- catch_fork, catch_vfork
-}
-catch_fork_kind;
-
-#if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT)
-static void catch_fork_command_1 (catch_fork_kind fork_kind,
- char *arg, int tempflag, int from_tty);
-
-static void
-catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag,
- int from_tty)
-{
- char *cond_string = NULL;
-
- ep_skip_leading_whitespace (&arg);
-
- /* The allowed syntax is:
- catch [v]fork
- catch [v]fork if <cond>
-
- First, check if there's an if clause. */
- cond_string = ep_parse_optional_if_clause (&arg);
-
- if ((*arg != '\0') && !isspace (*arg))
- error ("Junk at end of arguments.");
-
- /* If this target supports it, create a fork or vfork catchpoint
- and enable reporting of such events. */
- switch (fork_kind)
- {
- case catch_fork:
- create_fork_event_catchpoint (tempflag, cond_string);
- break;
- case catch_vfork:
- create_vfork_event_catchpoint (tempflag, cond_string);
- break;
- default:
- error ("unsupported or unknown fork kind; cannot catch it");
- break;
- }
-}
-#endif
-
-#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
-static void
-catch_exec_command_1 (char *arg, int tempflag, int from_tty)
-{
- char *cond_string = NULL;
-
- ep_skip_leading_whitespace (&arg);
-
- /* The allowed syntax is:
- catch exec
- catch exec if <cond>
-
- First, check if there's an if clause. */
- cond_string = ep_parse_optional_if_clause (&arg);
-
- if ((*arg != '\0') && !isspace (*arg))
- error ("Junk at end of arguments.");
-
- /* If this target supports it, create an exec catchpoint
- and enable reporting of such events. */
- create_exec_event_catchpoint (tempflag, cond_string);
-}
-#endif
-
-#if defined(SOLIB_ADD)
-static void
-catch_load_command_1 (char *arg, int tempflag, int from_tty)
-{
- char *dll_pathname = NULL;
- char *cond_string = NULL;
-
- ep_skip_leading_whitespace (&arg);
-
- /* The allowed syntax is:
- catch load
- catch load if <cond>
- catch load <filename>
- catch load <filename> if <cond>
-
- The user is not allowed to specify the <filename> after an
- if clause.
-
- We'll ignore the pathological case of a file named "if".
-
- First, check if there's an if clause. If so, then there
- cannot be a filename. */
- cond_string = ep_parse_optional_if_clause (&arg);
-
- /* If there was an if clause, then there cannot be a filename.
- Else, there might be a filename and an if clause. */
- if (cond_string == NULL)
- {
- dll_pathname = ep_parse_optional_filename (&arg);
- ep_skip_leading_whitespace (&arg);
- cond_string = ep_parse_optional_if_clause (&arg);
- }
-
- if ((*arg != '\0') && !isspace (*arg))
- error ("Junk at end of arguments.");
-
- /* Create a load breakpoint that only triggers when a load of
- the specified dll (or any dll, if no pathname was specified)
- occurs. */
- SOLIB_CREATE_CATCH_LOAD_HOOK (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. */
- enum bptype bptype;
-
- if (!sal) /* no exception support? */
- return;
-
- switch (ex_event)
- {
- case EX_EVENT_THROW:
- bptype = bp_catch_throw;
- break;
- case EX_EVENT_CATCH:
- bptype = bp_catch_catch;
- break;
- default: /* error condition */
- error ("Internal error -- invalid catchpoint kind");
- }
-
- b = set_raw_breakpoint (*sal, bptype);
- 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_state = bp_enabled;
- b->disposition = tempflag ? disp_del : disp_donttouch;
- 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_p);
- if (sal == NULL)
- return 0;
- else if (sal == (struct symtab_and_line *) -1)
- return -1;
- else
- return 1; /*is valid */
-}
-
-
-
-/* This is the original v.4.16 and earlier version of the
- catch_command_1() function. Now that other flavours of "catch"
- have been introduced, and since exception handling can be handled
- in other ways (through target ops) also, this is used only for the
- GNU C++ exception handling system.
- Note: Only the "catch" flavour of GDB 4.16 is handled here. The
- "catch NAME" is now no longer allowed in catch_command_1(). Also,
- there was no code in GDB 4.16 for "catch throw".
-
- Called from catch_exception_command_1 () */
-
-
-static void
-handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty)
-{
- /* First, translate ARG into something we can deal with in terms
- of breakpoints. */
-
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- register struct expression *cond = 0;
- register struct breakpoint *b;
- char *save_arg;
- int i;
-
- 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'
- && (arg[2] == ' ' || arg[2] == '\t')))
- {
- /* Grab all active catch clauses. */
- sals = get_catch_sals (0);
- }
- else
- {
- /* Grab selected catch clauses. */
- error ("catch NAME not implemented");
-
-#if 0
- /* Not sure why this code has been disabled. I'm leaving
- it disabled. We can never come here now anyway
- since we don't allow the "catch NAME" syntax.
- pai/1997-07-11 */
-
- /* This isn't used; I don't know what it was for. */
- sals = map_catch_names (arg, catch_breakpoint);
-#endif
- }
-
- if (!sals.nelts)
- 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),
- block_for_pc (sals.sals[i].pc), 0);
- else
- error ("Junk at end of arguments.");
- }
- arg = save_arg;
- }
-
- for (i = 0; i < sals.nelts; i++)
- {
- sal = sals.sals[i];
-
- if (from_tty)
- describe_other_breakpoints (sal.pc, sal.section);
-
- /* 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 = set_raw_breakpoint (sal, bp_breakpoint);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
-
- b->cond = cond;
- b->enable_state = bp_enabled;
- b->disposition = tempflag ? disp_del : disp_donttouch;
-
- mention (b);
- }
-
- if (sals.nelts > 1)
- {
- warning ("Multiple breakpoints were set.");
- warning ("Use the \"delete\" command to delete unwanted breakpoints.");
- }
- xfree (sals.sals);
-}
-
-static void
-catch_command_1 (char *arg, int tempflag, int from_tty)
-{
-
- /* The first argument may be an event name, such as "start" or "load".
- If so, then handle it as such. If it doesn't match an event name,
- then attempt to interpret it as an exception name. (This latter is
- the v4.16-and-earlier GDB meaning of the "catch" command.)
-
- First, try to find the bounds of what might be an event name. */
- char *arg1_start = arg;
- char *arg1_end;
- int arg1_length;
-
- if (arg1_start == NULL)
- {
- /* Old behaviour was to use pre-v-4.16 syntax */
- /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
- /* return; */
- /* Now, this is not allowed */
- error ("Catch requires an event name.");
-
- }
- arg1_end = ep_find_event_name_end (arg1_start);
- if (arg1_end == NULL)
- error ("catch requires an event");
- arg1_length = arg1_end + 1 - arg1_start;
-
- /* Try to match what we found against known event names. */
- if (strncmp (arg1_start, "signal", arg1_length) == 0)
- {
- error ("Catch of signal not yet implemented");
- }
- else if (strncmp (arg1_start, "catch", arg1_length) == 0)
- {
- catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1,
- tempflag, from_tty);
- }
- else if (strncmp (arg1_start, "throw", arg1_length) == 0)
- {
- catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1,
- tempflag, from_tty);
- }
- else if (strncmp (arg1_start, "thread_start", arg1_length) == 0)
- {
- error ("Catch of thread_start not yet implemented");
- }
- else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0)
- {
- error ("Catch of thread_exit not yet implemented");
- }
- else if (strncmp (arg1_start, "thread_join", arg1_length) == 0)
- {
- error ("Catch of thread_join not yet implemented");
- }
- else if (strncmp (arg1_start, "start", arg1_length) == 0)
- {
- error ("Catch of start not yet implemented");
- }
- else if (strncmp (arg1_start, "exit", arg1_length) == 0)
- {
- error ("Catch of exit not yet implemented");
- }
- else if (strncmp (arg1_start, "fork", arg1_length) == 0)
- {
-#if defined(CHILD_INSERT_FORK_CATCHPOINT)
- catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of fork not yet implemented");
-#endif
- }
- else if (strncmp (arg1_start, "vfork", arg1_length) == 0)
- {
-#if defined(CHILD_INSERT_VFORK_CATCHPOINT)
- catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of vfork not yet implemented");
-#endif
- }
- else if (strncmp (arg1_start, "exec", arg1_length) == 0)
- {
-#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
- catch_exec_command_1 (arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of exec not yet implemented");
-#endif
- }
- else if (strncmp (arg1_start, "load", arg1_length) == 0)
- {
-#if defined(SOLIB_ADD)
- catch_load_command_1 (arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of load not implemented");
-#endif
- }
- else if (strncmp (arg1_start, "unload", arg1_length) == 0)
- {
-#if defined(SOLIB_ADD)
- catch_unload_command_1 (arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of load not implemented");
-#endif
- }
- else if (strncmp (arg1_start, "stop", arg1_length) == 0)
- {
- error ("Catch of stop not yet implemented");
- }
-
- /* This doesn't appear to be an event name */
-
- else
- {
- /* Pre-v.4.16 behaviour was to treat the argument
- as the name of an exception */
- /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
- /* Now this is not allowed */
- error ("Unknown event kind specified for catch");
-
- }
-}
-
-/* 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, bp_breakpoint);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- 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 (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 (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 (char *args)
-{
- /* Map the delete command to catch clauses described in ARGS. */
-}
-#endif /* 0 */
-
-static void
-catch_command (char *arg, int from_tty)
-{
- catch_command_1 (arg, 0, from_tty);
-}
-
-
-static void
-tcatch_command (char *arg, int from_tty)
-{
- catch_command_1 (arg, 1, from_tty);
-}
-
-/* Delete breakpoints by address or line. */
-
-static void
-clear_command (char *arg, int from_tty)
-{
- struct breakpoint *b, *tmp, *prev, *found;
- int default_match;
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- int i;
-
- if (arg)
- {
- sals = decode_line_spec (arg, 1);
- default_match = 0;
- }
- else
- {
- sals.sals = (struct symtab_and_line *)
- xmalloc (sizeof (struct symtab_and_line));
- make_cleanup (xfree, sals.sals);
- INIT_SAL (&sal); /* initialize to zeroes */
- sal.line = default_breakpoint_line;
- sal.symtab = default_breakpoint_symtab;
- sal.pc = default_breakpoint_address;
- 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. Do it in two passes, solely to preserve the current
- behavior that from_tty is forced true if we delete more than
- one breakpoint. */
-
- found = NULL;
- for (i = 0; i < sals.nelts; i++)
- {
- /* If exact pc given, clear bpts at that pc.
- If line given (pc == 0), clear all bpts on specified line.
- If defaulting, clear all bpts on default line
- or at default pc.
-
- defaulting sal.pc != 0 tests to do
-
- 0 1 pc
- 1 1 pc _and_ line
- 0 0 line
- 1 0 <can't happen> */
-
- sal = sals.sals[i];
- prev = NULL;
-
- /* Find all matching breakpoints, remove them from the
- breakpoint chain, and add them to the 'found' chain. */
- ALL_BREAKPOINTS_SAFE (b, tmp)
- {
- /* Are we going to delete b? */
- if (b->type != bp_none
- && b->type != bp_watchpoint
- && b->type != bp_hardware_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- /* Not if b is a watchpoint of any sort... */
- && (((sal.pc && (b->address == sal.pc))
- && (!section_is_overlay (b->section)
- || b->section == sal.section))
- /* Yes, if sal.pc matches b (modulo overlays). */
- || ((default_match || (0 == sal.pc))
- && b->source_file != NULL
- && sal.symtab != NULL
- && STREQ (b->source_file, sal.symtab->filename)
- && b->line_number == sal.line)))
- /* Yes, if sal source file and line matches b. */
- {
- /* Remove it from breakpoint_chain... */
- if (b == breakpoint_chain)
- {
- /* b is at the head of the list */
- breakpoint_chain = b->next;
- }
- else
- {
- prev->next = b->next;
- }
- /* And add it to 'found' chain. */
- b->next = found;
- found = b;
- }
- else
- {
- /* Keep b, and keep a pointer to it. */
- prev = b;
- }
- }
- }
- /* Now go thru the 'found' chain and delete them. */
- if (found == 0)
- {
- if (arg)
- error ("No breakpoint at %s.", arg);
- else
- error ("No breakpoint at this line.");
- }
-
- if (found->next)
- from_tty = 1; /* Always report if deleted more than one */
- if (from_tty)
- printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : "");
- breakpoints_changed ();
- while (found)
- {
- if (from_tty)
- printf_unfiltered ("%d ", found->number);
- tmp = found->next;
- delete_breakpoint (found);
- found = tmp;
- }
- if (from_tty)
- putchar_unfiltered ('\n');
-}
-
-/* Delete breakpoint in BS if they are `delete' breakpoints and
- all breakpoints that are marked for deletion, whether hit or not.
- This is called after any breakpoint is hit, or after errors. */
-
-void
-breakpoint_auto_delete (bpstat bs)
-{
- struct breakpoint *b, *temp;
-
- for (; bs; bs = bs->next)
- if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del
- && bs->stop)
- delete_breakpoint (bs->breakpoint_at);
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->disposition == disp_del_at_next_stop)
- delete_breakpoint (b);
- }
-}
-
-/* Delete a breakpoint and clean up all traces of it in the data
- structures. */
-
-void
-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)
- remove_breakpoint (bpt, mark_inserted);
-
- 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_p = 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;
- }
-
- check_duplicates (bpt);
- /* 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_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_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_state == bp_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 there was an error in the insert, print a message, then stop execution. */
- if (val != 0)
- {
- struct ui_file *tmp_error_stream = mem_fileopen ();
- make_cleanup_ui_file_delete (tmp_error_stream);
-
-
- if (b->type == bp_hardware_breakpoint)
- {
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert hardware breakpoint %d.\n"
- "You may have requested too many hardware breakpoints.\n",
- b->number);
- }
- else
- {
- fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number);
- fprintf_filtered (tmp_error_stream, "Error accessing memory address ");
- print_address_numeric (b->address, 1, tmp_error_stream);
- fprintf_filtered (tmp_error_stream, ": %s.\n",
- safe_strerror (val));
- }
-
- fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process.");
- target_terminal_ours_for_output ();
- error_stream(tmp_error_stream);
- }
- else
- b->inserted = 1;
- }
- }
-
- free_command_lines (&bpt->commands);
- if (bpt->cond)
- xfree (bpt->cond);
- if (bpt->cond_string != NULL)
- xfree (bpt->cond_string);
- if (bpt->addr_string != NULL)
- 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. */
- for (bs = stop_bpstat; bs; bs = bs->next)
- if (bs->breakpoint_at == bpt)
- {
- bs->breakpoint_at = NULL;
- bs->old_val = NULL;
- /* bs->commands will be freed later. */
- }
- /* 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
-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;
-
- dont_repeat ();
-
- 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->type != bp_overlay_event &&
- b->number >= 0)
- breaks_to_delete = 1;
- }
-
- /* Ask user only if there are some breakpoints to delete. */
- if (!from_tty
- || (breaks_to_delete && query ("Delete all breakpoints? ")))
- {
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->type != bp_call_dummy &&
- b->type != bp_shlib_event &&
- b->type != bp_thread_event &&
- b->type != bp_overlay_event &&
- b->number >= 0)
- delete_breakpoint (b);
- }
- }
- }
- else
- map_breakpoint_numbers (arg, delete_breakpoint);
-}
-
-/* Reset a breakpoint given it's struct breakpoint * BINT.
- The value we return ends up being the return value from catch_errors.
- Unused in this case. */
-
-static int
-breakpoint_re_set_one (PTR bint)
-{
- /* get past catch_errs */
- struct breakpoint *b = (struct breakpoint *) bint;
- struct value *mark;
- int i;
- struct symtabs_and_lines sals;
- char *s;
- enum enable_state save_enable;
-
- 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;
- }
- /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote:
-
- ``And a hack it is, although Apple's Darwin version of GDB
- contains an almost identical hack to implement a "future
- break" command. It seems to work in many real world cases,
- but it is easy to come up with a test case where the patch
- doesn't help at all.''
-
- ``It seems that the way GDB implements breakpoints - in -
- shared - libraries was designed for a.out shared library
- systems (SunOS 4) where shared libraries were loaded at a
- fixed address in memory. Since ELF shared libraries can (and
- will) be loaded at any address in memory, things break.
- Fixing this is not trivial. Therefore, I'm not sure whether
- we should add this hack to the branch only. I cannot
- guarantee that things will be fixed on the trunk in the near
- future.''
-
- In case we have a problem, disable this breakpoint. We'll
- restore its status if we succeed. Don't disable a
- shlib_disabled breakpoint though. There's a fair chance we
- can't re-set it if the shared library it's in hasn't been
- loaded yet. */
- save_enable = b->enable_state;
- if (b->enable_state != bp_shlib_disabled)
- b->enable_state = bp_disabled;
-
- set_language (b->language);
- input_radix = b->input_radix;
- s = b->addr_string;
- sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL);
- for (i = 0; i < sals.nelts; i++)
- {
- resolve_sal_pc (&sals.sals[i]);
-
- /* 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);
- }
-
- /* 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 disabled
- 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_state = save_enable; /* Restore it, this worked. */
-
-
- /* Now that this is re-enabled, check_duplicates
- can be used. */
- check_duplicates (b);
-
- }
- 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_state == bp_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 and overlay event breakpoints; they will be
- reset later by breakpoint_re_set. */
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_overlay_event:
- 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 (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 */ ];
-
- save_language = current_language->la_language;
- save_input_radix = input_radix;
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- /* Format possible error msg */
- sprintf (message, message1, b->number);
- catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL);
- }
- set_language (save_language);
- input_radix = save_input_radix;
-
- if (GET_LONGJMP_TARGET_P ())
- {
- create_longjmp_breakpoint ("longjmp");
- create_longjmp_breakpoint ("_longjmp");
- create_longjmp_breakpoint ("siglongjmp");
- create_longjmp_breakpoint ("_siglongjmp");
- create_longjmp_breakpoint (NULL);
- }
-
- create_overlay_event_breakpoint ("_ovly_debug_event");
-}
-
-/* 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);
- }
-}
-
-/* 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). */
-
-void
-set_ignore_count (int bptnum, int count, int from_tty)
-{
- register struct breakpoint *b;
-
- if (count < 0)
- count = 0;
-
- ALL_BREAKPOINTS (b)
- if (b->number == bptnum)
- {
- b->ignore_count = count;
- if (from_tty)
- {
- 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 ();
- breakpoint_modify_event (b->number);
- return;
- }
-
- error ("No breakpoint number %d.", bptnum);
-}
-
-/* Clear the ignore counts of all breakpoints. */
-void
-breakpoint_clear_ignore_counts (void)
-{
- struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- b->ignore_count = 0;
-}
-
-/* Command to set ignore-count of breakpoint N to COUNT. */
-
-static void
-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);
- 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);
- if (from_tty)
- printf_filtered ("\n");
-}
-
-/* Call FUNCTION on each of the breakpoints
- whose numbers are given in ARGS. */
-
-static void
-map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *))
-{
- register char *p = args;
- char *p1;
- register int num;
- 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_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;
- }
-}
-
-/* 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). */
-
-void
-disable_breakpoint (struct breakpoint *bpt)
-{
- /* Never disable a watchpoint scope breakpoint; we want to
- hit them when we leave scope so we can delete both the
- watchpoint and its scope breakpoint at that time. */
- if (bpt->type == bp_watchpoint_scope)
- return;
-
- /* You can't disable permanent breakpoints. */
- if (bpt->enable_state == bp_permanent)
- return;
-
- bpt->enable_state = bp_disabled;
-
- check_duplicates (bpt);
-
- if (modify_breakpoint_hook)
- modify_breakpoint_hook (bpt);
- breakpoint_modify_event (bpt->number);
-}
-
-/* ARGSUSED */
-static void
-disable_command (char *args, int from_tty)
-{
- register struct breakpoint *bpt;
- if (args == 0)
- ALL_BREAKPOINTS (bpt)
- switch (bpt->type)
- {
- case bp_none:
- warning ("attempted to disable apparently deleted breakpoint #%d?",
- bpt->number);
- continue;
- case bp_breakpoint:
- case bp_catch_load:
- case bp_catch_unload:
- case bp_catch_fork:
- case bp_catch_vfork:
- case bp_catch_exec:
- case bp_catch_catch:
- case bp_catch_throw:
- case bp_hardware_breakpoint:
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
- disable_breakpoint (bpt);
- default:
- continue;
- }
- else
- map_breakpoint_numbers (args, disable_breakpoint);
-}
-
-static void
-do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition)
-{
- 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_state != bp_permanent)
- bpt->enable_state = bp_enabled;
- bpt->disposition = disposition;
- check_duplicates (bpt);
- 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 =
- fr = frame_find_by_id (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_state = bp_disabled;
- return;
- }
-
- save_selected_frame = selected_frame;
- save_selected_frame_level = frame_relative_level (selected_frame);
- select_frame (fr);
- }
-
- 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_state = bp_disabled;
- value_free_to_mark (mark);
- return;
- }
- }
-
- if (save_selected_frame_level >= 0)
- select_frame (save_selected_frame);
- value_free_to_mark (mark);
- }
- if (modify_breakpoint_hook)
- modify_breakpoint_hook (bpt);
- breakpoint_modify_event (bpt->number);
-}
-
-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
-enable_command (char *args, int from_tty)
-{
- register struct breakpoint *bpt;
- if (args == 0)
- ALL_BREAKPOINTS (bpt)
- switch (bpt->type)
- {
- case bp_none:
- warning ("attempted to 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, enable_breakpoint);
-}
-
-static void
-enable_once_breakpoint (struct breakpoint *bpt)
-{
- do_enable_breakpoint (bpt, disp_disable);
-}
-
-/* ARGSUSED */
-static void
-enable_once_command (char *args, int from_tty)
-{
- map_breakpoint_numbers (args, enable_once_breakpoint);
-}
-
-static void
-enable_delete_breakpoint (struct breakpoint *bpt)
-{
- do_enable_breakpoint (bpt, disp_del);
-}
-
-/* ARGSUSED */
-static void
-enable_delete_command (char *args, int from_tty)
-{
- map_breakpoint_numbers (args, enable_delete_breakpoint);
-}
-
-/* Use default_breakpoint_'s, or nothing if they aren't valid. */
-
-struct symtabs_and_lines
-decode_line_spec_1 (char *string, int funfirstline)
-{
- struct symtabs_and_lines sals;
- if (string == 0)
- error ("Empty line specification.");
- if (default_breakpoint_valid)
- sals = decode_line_1 (&string, funfirstline,
- default_breakpoint_symtab,
- default_breakpoint_line,
- (char ***) NULL);
- else
- 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;
-}
-
-void
-_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.\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\
-Give breakpoint number as argument after \"commands\".\n\
-With no argument, the targeted breakpoint is the last one set.\n\
-The commands themselves follow starting on the next line.\n\
-Type a line containing \"end\" to indicate the end of them.\n\
-Give \"silent\" as the first line to make the breakpoint silent;\n\
-then no output is printed when it is hit, except what the commands print.");
-
- add_com ("condition", class_breakpoint, condition_command,
- "Specify breakpoint number N to break only if COND is true.\n\
-Usage is `condition N COND', where N is an integer and COND is an\n\
-expression to be evaluated whenever breakpoint N is reached.");
-
- c = add_com ("tbreak", class_breakpoint, tbreak_command,
- "Set a temporary breakpoint. Args like \"break\" command.\n\
-Like \"break\" except the breakpoint is only temporary,\n\
-so it will be deleted when hit. Equivalent to \"break\" followed\n\
-by using \"enable delete\" on the breakpoint number.");
- set_cmd_completer (c, location_completer);
-
- c = 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.");
- set_cmd_completer (c, location_completer);
-
- c = 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.");
- set_cmd_completer (c, location_completer);
-
- add_prefix_cmd ("enable", 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.",
- &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\
-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);
-
- 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.",
- &enablebreaklist);
-
- add_cmd ("delete", no_class, enable_delete_command,
- "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it is deleted.",
- &enablebreaklist);
-
- add_cmd ("delete", no_class, enable_delete_command,
- "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
-If a breakpoint is hit while enabled in this fashion, it is deleted.",
- &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.",
- &enablelist);
-
- add_prefix_cmd ("disable", 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.",
- &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\
-Arguments are breakpoint numbers with spaces in between.\n\
-To disable all breakpoints, give no argument.\n\
-A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
-This command may be abbreviated \"disable\".",
- &disablelist);
-
- add_prefix_cmd ("delete", class_breakpoint, delete_command,
- "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\
-Also a prefix command for deletion of other GDB objects.\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\
-Arguments are breakpoint numbers with spaces in between.\n\
-To delete all breakpoints, give no argument.\n\
-This command may be abbreviated \"delete\".",
- &deletelist);
-
- add_com ("clear", class_breakpoint, clear_command,
- 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\
-is executing in.\n\
-\n\
-See also the \"delete\" command which clears breakpoints by number.", NULL));
-
- c = add_com ("break", class_breakpoint, break_command,
- 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\
-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));
- set_cmd_completer (c, location_completer);
-
- 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);
-
- if (xdb_commands)
- {
- add_com_alias ("ba", "break", class_breakpoint, 1);
- add_com_alias ("bu", "ubreak", class_breakpoint, 1);
- }
-
- if (dbx_commands)
- {
- add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command,
- "Break in function/address or break at a line in the current file.",
- &stoplist, "stop ", 1, &cmdlist);
- add_cmd ("in", class_breakpoint, stopin_command,
- "Break in function or address.\n", &stoplist);
- add_cmd ("at", class_breakpoint, stopat_command,
- "Break at a line in the current file.\n", &stoplist);
- add_com ("status", class_info, breakpoints_info,
- concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint - normal breakpoint\n\
-\twatchpoint - watchpoint\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
-breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
- "Convenience variable \"$_\" and default examine address for \"x\"\n\
-are set to the address of the last breakpoint listed.\n\n\
-Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.", NULL));
- }
-
- add_info ("breakpoints", breakpoints_info,
- concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint - normal breakpoint\n\
-\twatchpoint - watchpoint\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
-breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
- "Convenience variable \"$_\" 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 \"$bpnum\" contains the number of the last\n\
-breakpoint set.", NULL));
-
- add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints,
- concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint - normal breakpoint\n\
-\twatchpoint - watchpoint\n\
-\tlongjmp - internal breakpoint used to step through longjmp()\n\
-\tlongjmp resume - internal breakpoint at the target of longjmp()\n\
-\tuntil - internal breakpoint used by the \"until\" command\n\
-\tfinish - internal breakpoint used by the \"finish\" command\n",
- "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
-breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
- "Convenience variable \"$_\" 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 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.");
-
- c = 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.");
- set_cmd_completer (c, location_completer);
-
- c = 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.");
- set_cmd_completer (c, location_completer);
-
- c = 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.");
- set_cmd_completer (c, location_completer);
-
- 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;
-}