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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/breakpoint.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
Diffstat (limited to 'gdb/breakpoint.c')
-rw-r--r--gdb/breakpoint.c6624
1 files changed, 0 insertions, 6624 deletions
diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
deleted file mode 100644
index 8ca2916..0000000
--- a/gdb/breakpoint.c
+++ /dev/null
@@ -1,6624 +0,0 @@
-/* Everything about breakpoints, for GDB.
- Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
- 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"
-
-/* Prototypes for local functions. */
-
-static void
-catch_command_1 PARAMS ((char *, int, int));
-
-static void
-enable_delete_command PARAMS ((char *, int));
-
-static void
-enable_delete_breakpoint PARAMS ((struct breakpoint *));
-
-static void
-enable_once_command PARAMS ((char *, int));
-
-static void
-enable_once_breakpoint PARAMS ((struct breakpoint *));
-
-static void
-disable_command PARAMS ((char *, int));
-
-static void
-enable_command PARAMS ((char *, int));
-
-static void
-map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *)));
-
-static void
-ignore_command PARAMS ((char *, int));
-
-static int breakpoint_re_set_one PARAMS ((PTR));
-
-static void
-clear_command PARAMS ((char *, int));
-
-static void
-catch_command PARAMS ((char *, int));
-
-static void
-handle_gnu_4_16_catch_command PARAMS ((char *, int, int));
-
-static struct symtabs_and_lines
-get_catch_sals PARAMS ((int));
-
-static void
-watch_command PARAMS ((char *, int));
-
-static int
-can_use_hardware_watchpoint PARAMS ((struct value *));
-
-void
-tbreak_command PARAMS ((char *, int));
-
-static void
-break_command_1 PARAMS ((char *, int, int));
-
-static void
-mention PARAMS ((struct breakpoint *));
-
-struct breakpoint *
-set_raw_breakpoint PARAMS ((struct symtab_and_line));
-
-static void
-check_duplicates PARAMS ((CORE_ADDR, asection *));
-
-static void
-describe_other_breakpoints PARAMS ((CORE_ADDR, asection *));
-
-static void
-breakpoints_info PARAMS ((char *, int));
-
-static void
-breakpoint_1 PARAMS ((int, int));
-
-static bpstat
-bpstat_alloc PARAMS ((struct breakpoint *, bpstat));
-
-static int breakpoint_cond_eval PARAMS ((PTR));
-
-static void
-cleanup_executing_breakpoints PARAMS ((PTR));
-
-static void
-commands_command PARAMS ((char *, int));
-
-static void
-condition_command PARAMS ((char *, int));
-
-static int
-get_number PARAMS ((char **));
-
-void
-set_breakpoint_count PARAMS ((int));
-
-#if 0
-static struct breakpoint *
-create_temp_exception_breakpoint PARAMS ((CORE_ADDR));
-#endif
-
-typedef enum {
- mark_inserted,
- mark_uninserted,
-} insertion_state_t;
-
-static int
-remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t));
-
-static int print_it_normal PARAMS ((bpstat));
-
-typedef struct {
- enum exception_event_kind kind;
- int enable;
-} args_for_catchpoint_enable;
-
-static int watchpoint_check PARAMS ((PTR));
-
-static int cover_target_enable_exception_callback PARAMS ((PTR));
-
-static int print_it_done PARAMS ((bpstat));
-
-static int print_it_noop PARAMS ((bpstat));
-
-static void maintenance_info_breakpoints PARAMS ((char *, int));
-
-#ifdef GET_LONGJMP_TARGET
-static void create_longjmp_breakpoint PARAMS ((char *));
-#endif
-
-static int hw_breakpoint_used_count PARAMS ((void));
-
-static int hw_watchpoint_used_count PARAMS ((enum bptype, int *));
-
-static void hbreak_command PARAMS ((char *, int));
-
-static void thbreak_command PARAMS ((char *, int));
-
-static void watch_command_1 PARAMS ((char *, int, int));
-
-static void rwatch_command PARAMS ((char *, int));
-
-static void awatch_command PARAMS ((char *, int));
-
-static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp));
-
-/* Prototypes for exported functions. */
-
-static void
-awatch_command PARAMS ((char *, int));
-
-static void
-do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp));
-
-/* If FALSE, gdb will not use hardware support for watchpoints, even
- if such is available. */
-static int can_use_hw_watchpoints;
-
-void delete_command PARAMS ((char *, int));
-
-void _initialize_breakpoint PARAMS ((void));
-
-void set_breakpoint_count PARAMS ((int));
-
-extern int addressprint; /* Print machine addresses? */
-
-#if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD)
-static int internal_breakpoint_number = -1;
-#endif
-
-/* Are we executing breakpoint commands? */
-static int executing_breakpoint_commands;
-
-/* 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;
-
-
-/* Set breakpoint count to NUM. */
-
-void
-set_breakpoint_count (num)
- 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 ()
-{
- 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 "$" followed by the name
- of a convenience variable. Making it an expression wouldn't work well
- for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */
-static int
-get_number (pp)
- char **pp;
-{
- int retval;
- char *p = *pp;
-
- if (p == NULL)
- /* Empty line means refer to the last breakpoint. */
- return breakpoint_count;
- else if (*p == '$')
- {
- /* Make a copy of the name, so we can null-terminate it
- to pass to lookup_internalvar(). */
- char *varname;
- char *start = ++p;
- value_ptr 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)
- error (
-"Convenience variables used to specify breakpoints must have integer values."
- );
- retval = (int) value_as_long (val);
- }
- else
- {
- if (*p == '-')
- ++p;
- while (*p >= '0' && *p <= '9')
- ++p;
- if (p == *pp)
- /* There is no number here. (e.g. "cond a == b"). */
- error_no_arg ("breakpoint number");
- retval = atoi (*pp);
- }
- if (!(isspace (*p) || *p == '\0'))
- error ("breakpoint number expected");
- while (isspace (*p))
- p++;
- *pp = p;
- return retval;
-}
-
-/* condition N EXP -- set break condition of breakpoint N to EXP. */
-
-static void
-condition_command (arg, from_tty)
- 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);
-
- ALL_BREAKPOINTS (b)
- if (b->number == bnum)
- {
- if (b->cond)
- {
- free ((PTR)b->cond);
- b->cond = 0;
- }
- if (b->cond_string != NULL)
- free ((PTR)b->cond_string);
-
- if (*p == 0)
- {
- b->cond = 0;
- b->cond_string = NULL;
- if (from_tty)
- printf_filtered ("Breakpoint %d now unconditional.\n", bnum);
- }
- else
- {
- arg = p;
- /* I don't know if it matters whether this is the string the user
- typed in or the decompiled expression. */
- b->cond_string = savestring (arg, strlen (arg));
- b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0);
- if (*arg)
- error ("Junk at end of expression");
- }
- breakpoints_changed ();
- return;
- }
-
- error ("No breakpoint number %d.", bnum);
-}
-
-/* ARGSUSED */
-static void
-commands_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- 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 ();
- 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 (memaddr, myaddr, len)
- 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 ("attempted to read through apparently deleted breakpoint #%d?\n", b->number);
-
- /* memory breakpoint? */
- if (b->type == bp_watchpoint
- || b->type == bp_hardware_watchpoint
- || b->type == bp_read_watchpoint
- || b->type == bp_access_watchpoint)
- continue;
- /* bp in memory? */
- if (!b->inserted)
- continue;
- /* 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 ()
-{
- register struct breakpoint *b, *temp;
- int val = 0;
- int disabled_breaks = 0;
-
- static char message1[] = "Error inserting catchpoint %d:\n";
- static char message[sizeof (message1) + 30];
-
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->type != bp_watchpoint
- && b->type != bp_hardware_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- && b->type != bp_catch_fork
- && b->type != bp_catch_vfork
- && b->type != bp_catch_exec
- && b->type != bp_catch_throw
- && b->type != bp_catch_catch
- && b->enable != disabled
- && b->enable != shlib_disabled
- && b->enable != call_disabled
- && ! b->inserted
- && ! b->duplicate)
- {
- if (b->type == bp_hardware_breakpoint)
- val = target_insert_hw_breakpoint(b->address, b->shadow_contents);
- else
- {
- /* Check to see if breakpoint is in an overlay section;
- if so, we should set the breakpoint at the LMA address.
- Only if the section is currently mapped should we ALSO
- set a break at the VMA address. */
- if (overlay_debugging && b->section &&
- section_is_overlay (b->section))
- {
- CORE_ADDR addr;
-
- addr = overlay_unmapped_address (b->address, b->section);
- val = target_insert_breakpoint (addr, b->shadow_contents);
- /* This would be the time to check val, to see if the
- breakpoint write to the load address succeeded.
- However, this might be an ordinary occurrance, eg. if
- the unmapped overlay is in ROM. */
- val = 0; /* in case unmapped address failed */
- if (section_is_mapped (b->section))
- val = target_insert_breakpoint (b->address,
- b->shadow_contents);
- }
- else /* ordinary (non-overlay) address */
- val = target_insert_breakpoint(b->address, b->shadow_contents);
- }
- if (val)
- {
- /* Can't set the breakpoint. */
-#if defined (DISABLE_UNSETTABLE_BREAK)
- if (DISABLE_UNSETTABLE_BREAK (b->address))
- {
- /* See also: disable_breakpoints_in_shlibs. */
- val = 0;
- b->enable = shlib_disabled;
- if (!disabled_breaks)
- {
- target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr,
- "Cannot insert breakpoint %d:\n", b->number);
- printf_filtered ("Temporarily disabling shared library breakpoints:\n");
- }
- disabled_breaks = 1;
- printf_filtered ("%d ", b->number);
- }
- else
-#endif
- {
- target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
-#ifdef ONE_PROCESS_WRITETEXT
- fprintf_unfiltered (gdb_stderr,
- "The same program may be running in another process.\n");
-#endif
- memory_error (val, b->address); /* which bombs us out */
- }
- }
- else
- b->inserted = 1;
- }
- else if (ep_is_exception_catchpoint (b)
- && b->enable != disabled
- && b->enable != shlib_disabled
- && b->enable != call_disabled
- && ! b->inserted
- && ! b->duplicate)
-
- {
- /* If we get here, we must have a callback mechanism for exception
- events -- with g++ style embedded label support, we insert
- ordinary breakpoints and not catchpoints. */
- sprintf (message, message1, b->number); /* Format possible error message */
-
- val = target_insert_breakpoint(b->address, b->shadow_contents);
- if (val)
- {
- /* Couldn't set breakpoint for some reason */
- target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr,
- "Cannot insert catchpoint %d; disabling it\n", b->number);
- b->enable = disabled;
- }
- else
- {
- /* Bp set, now make sure callbacks are enabled */
- int val;
- args_for_catchpoint_enable args;
- args.kind = b->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW;
- args.enable = 1;
- val = catch_errors (cover_target_enable_exception_callback,
- &args,
- message, RETURN_MASK_ALL);
- if (val != 0 && val != -1)
- {
- b->inserted = 1;
- }
- /* Check if something went wrong; val == 0 can be ignored */
- if (val == -1)
- {
- /* something went wrong */
- target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d; disabling it\n", b->number);
- b->enable = disabled;
- }
- }
- }
-
- else if ((b->type == bp_hardware_watchpoint ||
- b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->enable == enabled
- && ! b->inserted
- && ! b->duplicate)
- {
- struct frame_info *saved_frame;
- int saved_level, within_current_scope;
- value_ptr mark = value_mark ();
- value_ptr v;
-
- /* Save the current frame and level so we can restore it after
- evaluating the watchpoint expression on its own frame. */
- saved_frame = selected_frame;
- saved_level = selected_frame_level;
-
- /* Determine if the watchpoint is within scope. */
- if (b->exp_valid_block == NULL)
- within_current_scope = 1;
- else
- {
- struct frame_info *fi;
-
- /* There might be no current frame at this moment if we are
- resuming from a step over a breakpoint.
- Set up current frame before trying to find the watchpoint
- frame. */
- get_current_frame ();
- fi = find_frame_addr_in_frame_chain (b->watchpoint_frame);
- within_current_scope = (fi != NULL);
- if (within_current_scope)
- select_frame (fi, -1);
- }
-
- if (within_current_scope)
- {
- /* Evaluate the expression and cut the chain of values
- produced off from the value chain. */
- v = evaluate_expression (b->exp);
- value_release_to_mark (mark);
-
- b->val_chain = v;
- b->inserted = 1;
-
- /* Look at each value on the value chain. */
- for ( ; v; v=v->next)
- {
- /* If it's a memory location, then we must watch it. */
- if (v->lval == lval_memory)
- {
- int addr, len, type;
-
- addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- len = TYPE_LENGTH (VALUE_TYPE (v));
- type = 0;
- if (b->type == bp_read_watchpoint)
- type = 1;
- else if (b->type == bp_access_watchpoint)
- type = 2;
-
- val = target_insert_watchpoint (addr, len, type);
- if (val == -1)
- {
- b->inserted = 0;
- break;
- }
- val = 0;
- }
- }
- /* Failure to insert a watchpoint on any memory value in the
- value chain brings us here. */
- if (!b->inserted)
- warning ("Hardware watchpoint %d: Could not insert watchpoint\n",
- b->number);
- }
- else
- {
- printf_filtered ("\
-Hardware watchpoint %d deleted because the program has left the block in\n\
-which its expression is valid.\n", b->number);
- if (b->related_breakpoint)
- b->related_breakpoint->disposition = del_at_next_stop;
- b->disposition = del_at_next_stop;
- }
-
- /* Restore the frame and level. */
- if ((saved_frame != selected_frame) ||
- (saved_level != selected_frame_level))
- select_and_print_frame (saved_frame, saved_level);
- }
- else if ((b->type == bp_catch_fork
- || b->type == bp_catch_vfork
- || b->type == bp_catch_exec)
- && b->enable == enabled
- && ! b->inserted
- && ! b->duplicate)
- {
- val = -1;
- switch (b->type)
- {
- case bp_catch_fork :
- val = target_insert_fork_catchpoint (inferior_pid);
- break;
- case bp_catch_vfork :
- val = target_insert_vfork_catchpoint (inferior_pid);
- break;
- case bp_catch_exec :
- val = target_insert_exec_catchpoint (inferior_pid);
- break;
- }
- if (val < 0)
- {
- target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d:\n", b->number);
- }
- else
- b->inserted = 1;
- }
- }
- if (disabled_breaks)
- printf_filtered ("\n");
-
- return val;
-}
-
-
-int
-remove_breakpoints ()
-{
- register struct breakpoint *b;
- int val;
-
- ALL_BREAKPOINTS (b)
- {
- if (b->inserted)
- {
- val = remove_breakpoint (b, mark_uninserted);
- if (val != 0)
- return val;
- }
- }
- return 0;
-}
-
-int
-reattach_breakpoints (pid)
- int pid;
-{
- register struct breakpoint *b;
- int val;
- int saved_inferior_pid = inferior_pid;
-
- inferior_pid = pid; /* Because remove_breakpoint will use this global. */
- ALL_BREAKPOINTS (b)
- {
- if (b->inserted)
- {
- remove_breakpoint (b, mark_inserted);
- if (b->type == bp_hardware_breakpoint)
- val = target_insert_hw_breakpoint(b->address, b->shadow_contents);
- else
- val = target_insert_breakpoint(b->address, b->shadow_contents);
- if (val != 0)
- {
- inferior_pid = saved_inferior_pid;
- return val;
- }
- }
- }
- inferior_pid = saved_inferior_pid;
- return 0;
-}
-
-void
-update_breakpoints_after_exec ()
-{
- 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;
- }
-
- /* Step-resume breakpoints are meaningless after an exec(). */
- if (b->type == bp_step_resume)
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* Ditto the sigtramp handler breakpoints. */
- if (b->type == bp_through_sigtramp)
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* Ditto the exception-handling catchpoints. */
- if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw))
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* Don't delete an exec catchpoint, because else the inferior
- won't stop when it ought!
-
- Similarly, we probably ought to keep vfork catchpoints, 'cause
- on this target, we may not be able to stop when the vfork is seen,
- but only when the subsequent exec is seen. (And because deleting
- fork catchpoints here but not vfork catchpoints will seem mysterious
- to users, keep those too.)
-
- ??rehrauer: Let's hope that merely clearing out this catchpoint's
- target address field, if any, is sufficient to have it be reset
- automagically. Certainly on HP-UX that's true. */
- if ((b->type == bp_catch_exec) ||
- (b->type == bp_catch_vfork) ||
- (b->type == bp_catch_fork))
- {
- b->address = (CORE_ADDR) NULL;
- continue;
- }
-
- /* bp_finish is a special case. The only way we ought to be able
- to see one of these when an exec() has happened, is if the user
- caught a vfork, and then said "finish". Ordinarily a finish just
- carries them to the call-site of the current callee, by setting
- a temporary bp there and resuming. But in this case, the finish
- will carry them entirely through the vfork & exec.
-
- We don't want to allow a bp_finish to remain inserted now. But
- we can't safely delete it, 'cause finish_command has a handle to
- the bp on a bpstat, and will later want to delete it. There's a
- chance (and I've seen it happen) that if we delete the bp_finish
- here, that its storage will get reused by the time finish_command
- gets 'round to deleting the "use to be a bp_finish" breakpoint.
- We really must allow finish_command to delete a bp_finish.
-
- In the absense of a general solution for the "how do we know it's
- safe to delete something others may have handles to?" problem, what
- we'll do here is just uninsert the bp_finish, and let finish_command
- delete it.
-
- (We know the bp_finish is "doomed" in the sense that it's momentary,
- and will be deleted as soon as finish_command sees the inferior stopped.
- So it doesn't matter that the bp's address is probably bogus in the
- new a.out, unlike e.g., the solib breakpoints.) */
- if (b->type == bp_finish)
- {
- continue;
- }
-
- /* Without a symbolic address, we have little hope of the
- pre-exec() address meaning the same thing in the post-exec()
- a.out. */
- if (b->addr_string == NULL)
- {
- delete_breakpoint (b);
- continue;
- }
-
- /* If this breakpoint has survived the above battery of checks, then
- it must have a symbolic address. Be sure that it gets reevaluated
- to a target address, rather than reusing the old evaluation. */
- b->address = (CORE_ADDR) NULL;
- }
-}
-
-int
-detach_breakpoints (pid)
- int pid;
-{
- register struct breakpoint *b;
- int val;
- int saved_inferior_pid = inferior_pid;
-
- if (pid == inferior_pid)
- error ("Cannot detach breakpoints of inferior_pid");
-
- inferior_pid = pid; /* Because remove_breakpoint will use this global. */
- ALL_BREAKPOINTS (b)
- {
- if (b->inserted)
- {
- val = remove_breakpoint (b, mark_inserted);
- if (val != 0)
- {
- inferior_pid = saved_inferior_pid;
- return val;
- }
- }
- }
- inferior_pid = saved_inferior_pid;
- return 0;
-}
-
-static int
-remove_breakpoint (b, is)
- struct breakpoint *b;
- insertion_state_t is;
-{
- int val;
-
- if (b->type == bp_none)
- warning ("attempted to remove apparently deleted breakpoint #%d?\n", b->number);
-
- if (b->type != bp_watchpoint
- && b->type != bp_hardware_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- && b->type != bp_catch_fork
- && b->type != bp_catch_vfork
- && b->type != bp_catch_exec
- && b->type != bp_catch_catch
- && b->type != bp_catch_throw)
-
- {
- if (b->type == bp_hardware_breakpoint)
- val = target_remove_hw_breakpoint(b->address, b->shadow_contents);
- else
- {
- /* Check to see if breakpoint is in an overlay section;
- if so, we should remove the breakpoint at the LMA address.
- If that is not equal to the raw address, then we should
- presumable remove the breakpoint there as well. */
- if (overlay_debugging && b->section &&
- section_is_overlay (b->section))
- {
- CORE_ADDR addr;
-
- addr = overlay_unmapped_address (b->address, b->section);
- val = target_remove_breakpoint (addr, b->shadow_contents);
- /* This would be the time to check val, to see if the
- shadow breakpoint write to the load address succeeded.
- However, this might be an ordinary occurrance, eg. if
- the unmapped overlay is in ROM. */
- val = 0; /* in case unmapped address failed */
- if (section_is_mapped (b->section))
- val = target_remove_breakpoint (b->address,
- b->shadow_contents);
- }
- else /* ordinary (non-overlay) address */
- val = target_remove_breakpoint(b->address, b->shadow_contents);
- }
- if (val)
- return val;
- b->inserted = (is == mark_inserted);
- }
- else if ((b->type == bp_hardware_watchpoint ||
- b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->enable == enabled
- && ! b->duplicate)
- {
- value_ptr v, n;
-
- b->inserted = (is == mark_inserted);
- /* Walk down the saved value chain. */
- for (v = b->val_chain; v; v = v->next)
- {
- /* For each memory reference remove the watchpoint
- at that address. */
- if (v->lval == lval_memory)
- {
- int addr, len, type;
-
- addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- len = TYPE_LENGTH (VALUE_TYPE (v));
- type = 0;
- if (b->type == bp_read_watchpoint)
- type = 1;
- else if (b->type == bp_access_watchpoint)
- type = 2;
-
- val = target_remove_watchpoint (addr, len, type);
- if (val == -1)
- b->inserted = 1;
- val = 0;
- }
- }
- /* Failure to remove any of the hardware watchpoints comes here. */
- if ((is == mark_uninserted) && (b->inserted))
- warning ("Hardware watchpoint %d: Could not remove watchpoint\n",
- b->number);
-
- /* Free the saved value chain. We will construct a new one
- the next time the watchpoint is inserted. */
- for (v = b->val_chain; v; v = n)
- {
- n = v->next;
- value_free (v);
- }
- b->val_chain = NULL;
- }
- else if ((b->type == bp_catch_fork ||
- b->type == bp_catch_vfork ||
- b->type == bp_catch_exec)
- && b->enable == enabled
- && ! b->duplicate)
- {
- val = -1;
- switch (b->type)
- {
- case bp_catch_fork:
- val = target_remove_fork_catchpoint (inferior_pid);
- break;
- case bp_catch_vfork :
- val = target_remove_vfork_catchpoint (inferior_pid);
- break;
- case bp_catch_exec :
- val = target_remove_exec_catchpoint (inferior_pid);
- break;
- }
- if (val)
- return val;
- b->inserted = (is == mark_inserted);
- }
- else if ((b->type == bp_catch_catch ||
- b->type == bp_catch_throw)
- && b->enable == enabled
- && ! b->duplicate)
- {
-
- val = target_remove_breakpoint(b->address, b->shadow_contents);
- if (val)
- return val;
- b->inserted = (is == mark_inserted);
- }
- else if (ep_is_exception_catchpoint (b)
- && b->inserted /* sometimes previous insert doesn't happen */
- && b->enable == enabled
- && ! b->duplicate)
- {
-
- val = target_remove_breakpoint(b->address, b->shadow_contents);
- if (val)
- return val;
-
- b->inserted = (is == mark_inserted);
- }
-
- return 0;
-}
-
-/* Clear the "inserted" flag in all breakpoints. */
-
-void
-mark_breakpoints_out ()
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- b->inserted = 0;
-}
-
-/* Clear the "inserted" flag in all breakpoints and delete any breakpoints
- which should go away between runs of the program.
-
- Plus other such housekeeping that has to be done for breakpoints
- between runs.
-
- Note: this function gets called at the end of a run (by generic_mourn_inferior)
- and when a run begins (by init_wait_for_inferior). */
-
-
-
-void
-breakpoint_init_inferior (context)
- enum inf_context context;
-{
- register struct breakpoint *b, *temp;
- static int warning_needed = 0;
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- b->inserted = 0;
-
- switch (b->type)
- {
- case bp_call_dummy:
- case bp_watchpoint_scope:
-
- /* If the call dummy breakpoint is at the entry point it will
- cause problems when the inferior is rerun, so we better
- get rid of it.
-
- Also get rid of scope breakpoints. */
- delete_breakpoint (b);
- break;
-
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
-
- /* Likewise for watchpoints on local expressions. */
- if (b->exp_valid_block != NULL)
- delete_breakpoint (b);
- break;
- default:
- /* Likewise for exception catchpoints in dynamic-linked
- executables where required */
- if (ep_is_exception_catchpoint (b) &&
- exception_catchpoints_are_fragile)
- {
- warning_needed = 1;
- delete_breakpoint (b);
- }
- break;
- }
- }
-
- if (exception_catchpoints_are_fragile)
- exception_support_initialized = 0;
-
- /* Don't issue the warning unless it's really needed... */
- if (warning_needed && (context != inf_exited))
- {
- warning ("Exception catchpoints from last run were deleted, you must reinsert them explicitly");
- warning_needed = 0;
- }
-}
-
-/* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC.
- When continuing from a location with a breakpoint,
- we actually single step once before calling insert_breakpoints. */
-
-int
-breakpoint_here_p (pc)
- CORE_ADDR pc;
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->enable == enabled
- && b->enable != shlib_disabled
- && b->enable != call_disabled
- && b->address == pc) /* bp is enabled and matches pc */
- {
- if (overlay_debugging &&
- section_is_overlay (b->section) &&
- !section_is_mapped (b->section))
- continue; /* unmapped overlay -- can't be a match */
- else
- return 1;
- }
-
- return 0;
-}
-
-/* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), but it
- only returns true if there is actually a breakpoint inserted at PC. */
-
-int
-breakpoint_inserted_here_p (pc)
- CORE_ADDR pc;
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->inserted
- && b->address == pc) /* bp is inserted and matches pc */
- {
- if (overlay_debugging &&
- section_is_overlay (b->section) &&
- !section_is_mapped (b->section))
- continue; /* unmapped overlay -- can't be a match */
- else
- return 1;
- }
-
- return 0;
-}
-
-/* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY
- because figuring out the saved SP would take too much time, at least using
- get_saved_register on the 68k. This means that for this function to
- work right a port must use the bp_call_dummy breakpoint. */
-
-int
-frame_in_dummy (frame)
- struct frame_info *frame;
-{
-#ifdef CALL_DUMMY
-#ifdef USE_GENERIC_DUMMY_FRAMES
- return generic_pc_in_call_dummy (frame->pc, frame->frame);
-#else
- struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- {
- static ULONGEST dummy[] = CALL_DUMMY;
-
- if (b->type == bp_call_dummy
- && b->frame == frame->frame
-
- /* We need to check the PC as well as the frame on the sparc,
- for signals.exp in the testsuite. */
- && (frame->pc
- >= (b->address
- - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE))
- && frame->pc <= b->address)
- return 1;
- }
-#endif /* GENERIC_DUMMY_FRAMES */
-#endif /* CALL_DUMMY */
- return 0;
-}
-
-/* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC
- is valid for process/thread PID. */
-
-int
-breakpoint_thread_match (pc, pid)
- CORE_ADDR pc;
- int pid;
-{
- struct breakpoint *b;
- int thread;
-
- thread = pid_to_thread_id (pid);
-
- ALL_BREAKPOINTS (b)
- if (b->enable != disabled
- && b->enable != shlib_disabled
- && b->enable != call_disabled
- && b->address == pc
- && (b->thread == -1 || b->thread == thread))
- {
- if (overlay_debugging &&
- section_is_overlay (b->section) &&
- !section_is_mapped (b->section))
- continue; /* unmapped overlay -- can't be a match */
- else
- return 1;
- }
-
- return 0;
-}
-
-
-/* bpstat stuff. External routines' interfaces are documented
- in breakpoint.h. */
-
-int
-ep_is_catchpoint (ep)
- struct breakpoint * ep;
-{
- return
- (ep->type == bp_catch_load)
- || (ep->type == bp_catch_unload)
- || (ep->type == bp_catch_fork)
- || (ep->type == bp_catch_vfork)
- || (ep->type == bp_catch_exec)
- || (ep->type == bp_catch_catch)
- || (ep->type == bp_catch_throw)
-
-
- /* ??rehrauer: Add more kinds here, as are implemented... */
- ;
-}
-
-int
-ep_is_shlib_catchpoint (ep)
- struct breakpoint * ep;
-{
- return
- (ep->type == bp_catch_load)
- || (ep->type == bp_catch_unload)
- ;
-}
-
-int
-ep_is_exception_catchpoint (ep)
- struct breakpoint * ep;
-{
- return
- (ep->type == bp_catch_catch)
- || (ep->type == bp_catch_throw)
- ;
-}
-
-/* Clear a bpstat so that it says we are not at any breakpoint.
- Also free any storage that is part of a bpstat. */
-
-void
-bpstat_clear (bsp)
- bpstat *bsp;
-{
- bpstat p;
- bpstat q;
-
- if (bsp == 0)
- return;
- p = *bsp;
- while (p != NULL)
- {
- q = p->next;
- if (p->old_val != NULL)
- value_free (p->old_val);
- free ((PTR)p);
- p = q;
- }
- *bsp = NULL;
-}
-
-/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
- is part of the bpstat is copied as well. */
-
-bpstat
-bpstat_copy (bs)
- bpstat bs;
-{
- bpstat p = NULL;
- bpstat tmp;
- bpstat retval = NULL;
-
- if (bs == NULL)
- return bs;
-
- for (; bs != NULL; bs = bs->next)
- {
- tmp = (bpstat) xmalloc (sizeof (*tmp));
- memcpy (tmp, bs, sizeof (*tmp));
- if (p == NULL)
- /* This is the first thing in the chain. */
- retval = tmp;
- else
- p->next = tmp;
- p = tmp;
- }
- p->next = NULL;
- return retval;
-}
-
-/* Find the bpstat associated with this breakpoint */
-
-bpstat
-bpstat_find_breakpoint(bsp, 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 (bsp)
- bpstat bsp;
-{
- if (bsp == NULL)
- error ("Internal error (bpstat_find_step_resume_breakpoint)");
-
- for (; bsp != NULL; bsp = bsp->next)
- {
- if ((bsp->breakpoint_at != NULL) &&
- (bsp->breakpoint_at->type == bp_step_resume))
- return bsp->breakpoint_at;
- }
-
- error ("Internal error (no step_resume breakpoint found)");
-}
-
-
-/* Return the breakpoint number of the first breakpoint we are stopped
- at. *BSP upon return is a bpstat which points to the remaining
- breakpoints stopped at (but which is not guaranteed to be good for
- anything but further calls to bpstat_num).
- Return 0 if passed a bpstat which does not indicate any breakpoints. */
-
-int
-bpstat_num (bsp)
- bpstat *bsp;
-{
- 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 (bs)
- bpstat bs;
-{
- for (; bs != NULL; bs = bs->next)
- {
- bs->commands = NULL;
- if (bs->old_val != NULL)
- {
- value_free (bs->old_val);
- bs->old_val = NULL;
- }
- }
-}
-
-/* Stub for cleaning up our state if we error-out of a breakpoint command */
-/* ARGSUSED */
-static void
-cleanup_executing_breakpoints (ignore)
- 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 (bsp)
- bpstat *bsp;
-{
- bpstat bs;
- struct cleanup *old_chain;
- struct command_line *cmd;
-
- /* Avoid endless recursion if a `source' command is contained
- in bs->commands. */
- if (executing_breakpoint_commands)
- return;
-
- executing_breakpoint_commands = 1;
- old_chain = make_cleanup (cleanup_executing_breakpoints, 0);
-
-top:
- /* Note that (as of this writing), our callers all appear to
- be passing us the address of global stop_bpstat. And, if
- our calls to execute_control_command cause the inferior to
- proceed, that global (and hence, *bsp) will change.
-
- We must be careful to not touch *bsp unless the inferior
- has not proceeded. */
-
- /* This pointer will iterate over the list of bpstat's. */
- bs = *bsp;
-
- breakpoint_proceeded = 0;
- for (; bs != NULL; bs = bs->next)
- {
- cmd = bs->commands;
- while (cmd != NULL)
- {
- execute_control_command (cmd);
-
- if (breakpoint_proceeded)
- break;
- else
- cmd = cmd->next;
- }
- if (breakpoint_proceeded)
- /* The inferior is proceeded by the command; bomb out now.
- The bpstat chain has been blown away by wait_for_inferior.
- But since execution has stopped again, there is a new bpstat
- to look at, so start over. */
- goto top;
- else
- bs->commands = NULL;
- }
-
- executing_breakpoint_commands = 0;
- discard_cleanups (old_chain);
-}
-
-/* This is the normal print_it function for a bpstat. In the future,
- much of this logic could (should?) be moved to bpstat_stop_status,
- by having it set different print_it functions.
-
- Current scheme: When we stop, bpstat_print() is called.
- It loops through the bpstat list of things causing this stop,
- calling the print_it function for each one. The default
- print_it function, used for breakpoints, is print_it_normal().
- (Also see print_it_noop() and print_it_done()).
-
- Return values from this routine (used by bpstat_print() to
- decide what to do):
- 1: Means we printed something, and we do *not* desire that
- something to be followed by a location.
- 0: Means we printed something, and we *do* desire that
- something to be followed by a location.
- -1: Means we printed nothing. */
-
-static int
-print_it_normal (bs)
- bpstat bs;
-{
- /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
- which has since been deleted. */
- if (bs->breakpoint_at == NULL
- || (bs->breakpoint_at->type != bp_breakpoint
- && bs->breakpoint_at->type != bp_catch_load
- && bs->breakpoint_at->type != bp_catch_unload
- && bs->breakpoint_at->type != bp_catch_fork
- && bs->breakpoint_at->type != bp_catch_vfork
- && bs->breakpoint_at->type != bp_catch_exec
- && bs->breakpoint_at->type != bp_catch_catch
- && bs->breakpoint_at->type != bp_catch_throw
- && bs->breakpoint_at->type != bp_hardware_breakpoint
- && bs->breakpoint_at->type != bp_watchpoint
- && bs->breakpoint_at->type != bp_read_watchpoint
- && bs->breakpoint_at->type != bp_access_watchpoint
- && bs->breakpoint_at->type != bp_hardware_watchpoint))
- return -1;
-
- if (ep_is_shlib_catchpoint (bs->breakpoint_at))
- {
- annotate_catchpoint (bs->breakpoint_at->number);
- printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
- if (bs->breakpoint_at->type == bp_catch_load)
- printf_filtered ("loaded");
- else if (bs->breakpoint_at->type == bp_catch_unload)
- printf_filtered ("unloaded");
- printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname);
- return 0;
- }
- else if (bs->breakpoint_at->type == bp_catch_fork ||
- bs->breakpoint_at->type == bp_catch_vfork)
- {
- annotate_catchpoint (bs->breakpoint_at->number);
- printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number);
- if (bs->breakpoint_at->type == bp_catch_fork)
- printf_filtered ("forked");
- else if (bs->breakpoint_at->type == bp_catch_vfork)
- printf_filtered ("vforked");
- printf_filtered (" process %d), ", bs->breakpoint_at->forked_inferior_pid);
- return 0;
- }
- else if (bs->breakpoint_at->type == bp_catch_exec)
- {
- annotate_catchpoint (bs->breakpoint_at->number);
- printf_filtered ("\nCatchpoint %d (exec'd %s), ",
- bs->breakpoint_at->number,
- bs->breakpoint_at->exec_pathname);
- return 0;
- }
- else if (bs->breakpoint_at->type == bp_catch_catch)
- {
- if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH))
- {
- annotate_catchpoint (bs->breakpoint_at->number);
- printf_filtered ("\nCatchpoint %d (exception caught), ", bs->breakpoint_at->number);
- printf_filtered ("throw location ");
- if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE)
- printf_filtered ("%s:%d",
- CURRENT_EXCEPTION_THROW_FILE,
- CURRENT_EXCEPTION_THROW_LINE);
- else
- printf_filtered ("unknown");
-
- printf_filtered (", catch location ");
- if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE)
- printf_filtered ("%s:%d",
- CURRENT_EXCEPTION_CATCH_FILE,
- CURRENT_EXCEPTION_CATCH_LINE);
- else
- printf_filtered ("unknown");
-
- printf_filtered ("\n");
- return 1; /* don't bother to print location frame info */
- }
- else
- {
- return -1; /* really throw, some other bpstat will handle it */
- }
- }
- else if (bs->breakpoint_at->type == bp_catch_throw)
- {
- if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW))
- {
- annotate_catchpoint (bs->breakpoint_at->number);
- printf_filtered ("\nCatchpoint %d (exception thrown), ", bs->breakpoint_at->number);
- printf_filtered ("throw location ");
- if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE)
- printf_filtered ("%s:%d",
- CURRENT_EXCEPTION_THROW_FILE,
- CURRENT_EXCEPTION_THROW_LINE);
- else
- printf_filtered ("unknown");
-
- printf_filtered (", catch location ");
- if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE)
- printf_filtered ("%s:%d",
- CURRENT_EXCEPTION_CATCH_FILE,
- CURRENT_EXCEPTION_CATCH_LINE);
- else
- printf_filtered ("unknown");
-
- printf_filtered ("\n");
- return 1; /* don't bother to print location frame info */
- }
- else
- {
- return -1; /* really catch, some other bpstat willhandle it */
- }
- }
-
- else if (bs->breakpoint_at->type == bp_breakpoint ||
- bs->breakpoint_at->type == bp_hardware_breakpoint)
- {
- /* I think the user probably only wants to see one breakpoint
- number, not all of them. */
- annotate_breakpoint (bs->breakpoint_at->number);
- printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number);
- return 0;
- }
- else if ((bs->old_val != NULL) &&
- (bs->breakpoint_at->type == bp_watchpoint ||
- bs->breakpoint_at->type == bp_access_watchpoint ||
- bs->breakpoint_at->type == bp_hardware_watchpoint))
- {
- annotate_watchpoint (bs->breakpoint_at->number);
- mention (bs->breakpoint_at);
- printf_filtered ("\nOld value = ");
- value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default);
- printf_filtered ("\nNew value = ");
- value_print (bs->breakpoint_at->val, gdb_stdout, 0,
- Val_pretty_default);
- printf_filtered ("\n");
- value_free (bs->old_val);
- bs->old_val = NULL;
- /* More than one watchpoint may have been triggered. */
- return -1;
- }
- else if (bs->breakpoint_at->type == bp_access_watchpoint ||
- bs->breakpoint_at->type == bp_read_watchpoint)
- {
- mention (bs->breakpoint_at);
- printf_filtered ("\nValue = ");
- value_print (bs->breakpoint_at->val, gdb_stdout, 0,
- Val_pretty_default);
- printf_filtered ("\n");
- return -1;
- }
- /* We can't deal with it. Maybe another member of the bpstat chain can. */
- return -1;
-}
-
-/* Print a message indicating what happened.
- This is called from normal_stop().
- The input to this routine is the head of the bpstat list - a list
- of the eventpoints that caused this stop.
- This routine calls the "print_it" routine(s) associated
- with these eventpoints. This will print (for example)
- the "Breakpoint n," part of the output.
- The return value of this routine is one of:
-
- -1: Means we printed nothing
- 0: Means we printed something, and expect subsequent
- code to print the location. An example is
- "Breakpoint 1, " which should be followed by
- the location.
- 1 : Means we printed something, but there is no need
- to also print the location part of the message.
- An example is the catch/throw messages, which
- don't require a location appended to the end. */
-
-int
-bpstat_print (bs)
- bpstat bs;
-{
- int val;
-
- if (bs == NULL)
- return -1;
-
- val = (*bs->print_it) (bs);
- if (val >= 0)
- return val;
-
- /* Maybe another breakpoint in the chain caused us to stop.
- (Currently all watchpoints go on the bpstat whether hit or
- not. That probably could (should) be changed, provided care is taken
- with respect to bpstat_explains_signal). */
- if (bs->next)
- return bpstat_print (bs->next);
-
- /* We reached the end of the chain without printing anything. */
- return -1;
-}
-
-/* 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 (exp)
- PTR exp;
-{
- value_ptr mark = value_mark ();
- int i = !value_true (evaluate_expression ((struct expression *)exp));
- value_free_to_mark (mark);
- return i;
-}
-
-/* Allocate a new bpstat and chain it to the current one. */
-
-static bpstat
-bpstat_alloc (b, cbs)
- register struct breakpoint *b;
- bpstat cbs; /* Current "bs" value */
-{
- 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 (p)
- PTR p;
-{
- bpstat bs = (bpstat) p;
- struct breakpoint *b;
- struct frame_info *fr;
- int within_current_scope;
-
- b = bs->breakpoint_at;
-
- if (b->exp_valid_block == NULL)
- within_current_scope = 1;
- else
- {
- /* There is no current frame at this moment. If we're going to have
- any chance of handling watchpoints on local variables, we'll need
- the frame chain (so we can determine if we're in scope). */
- reinit_frame_cache();
- fr = find_frame_addr_in_frame_chain (b->watchpoint_frame);
- within_current_scope = (fr != NULL);
- if (within_current_scope)
- /* If we end up stopping, the current frame will get selected
- in normal_stop. So this call to select_frame won't affect
- the user. */
- select_frame (fr, -1);
- }
-
- if (within_current_scope)
- {
- /* We use value_{,free_to_}mark because it could be a
- *long* time before we return to the command level and
- call free_all_values. We can't call free_all_values because
- we might be in the middle of evaluating a function call. */
-
- value_ptr mark = value_mark ();
- value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp);
- if (!value_equal (b->val, new_val))
- {
- release_value (new_val);
- value_free_to_mark (mark);
- bs->old_val = b->val;
- b->val = new_val;
- /* We will stop here */
- return WP_VALUE_CHANGED;
- }
- else
- {
- /* Nothing changed, don't do anything. */
- value_free_to_mark (mark);
- /* We won't stop here */
- return WP_VALUE_NOT_CHANGED;
- }
- }
- else
- {
- /* This seems like the only logical thing to do because
- if we temporarily ignored the watchpoint, then when
- we reenter the block in which it is valid it contains
- garbage (in the case of a function, it may have two
- garbage values, one before and one after the prologue).
- So we can't even detect the first assignment to it and
- watch after that (since the garbage may or may not equal
- the first value assigned). */
- printf_filtered ("\
-Watchpoint %d deleted because the program has left the block in\n\
-which its expression is valid.\n", bs->breakpoint_at->number);
- if (b->related_breakpoint)
- b->related_breakpoint->disposition = del_at_next_stop;
- b->disposition = del_at_next_stop;
-
- return WP_DELETED;
- }
-}
-
-/* This is used when everything which needs to be printed has
- already been printed. But we still want to print the frame. */
-
-/* Background: When we stop, bpstat_print() is called.
- It loops through the bpstat list of things causing this stop,
- calling the print_it function for each one. The default
- print_it function, used for breakpoints, is print_it_normal().
- Also see print_it_noop() and print_it_done() are the other
- two possibilities. See comments in bpstat_print() and
- in header of print_it_normal() for more detail. */
-
-static int
-print_it_done (bs)
- bpstat bs;
-{
- return 0;
-}
-
-/* This is used when nothing should be printed for this bpstat entry. */
-/* Background: When we stop, bpstat_print() is called.
- It loops through the bpstat list of things causing this stop,
- calling the print_it function for each one. The default
- print_it function, used for breakpoints, is print_it_normal().
- Also see print_it_noop() and print_it_done() are the other
- two possibilities. See comments in bpstat_print() and
- in header of print_it_normal() for more detail. */
-
-static int
-print_it_noop (bs)
- bpstat bs;
-{
- return -1;
-}
-
-/* Get a bpstat associated with having just stopped at address *PC
- and frame address CORE_ADDRESS. Update *PC to point at the
- breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero
- if this is known to not be a real breakpoint (it could still be a
- watchpoint, though). */
-
-/* Determine whether we stopped at a breakpoint, etc, or whether we
- don't understand this stop. Result is a chain of bpstat's such that:
-
- if we don't understand the stop, the result is a null pointer.
-
- if we understand why we stopped, the result is not null.
-
- 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 (pc, not_a_breakpoint)
- CORE_ADDR *pc;
- int not_a_breakpoint;
-{
- register struct breakpoint *b, *temp;
- CORE_ADDR bp_addr;
- /* True if we've hit a breakpoint (as opposed to a watchpoint). */
- int real_breakpoint = 0;
- /* Root of the chain of bpstat's */
- struct bpstats root_bs[1];
- /* Pointer to the last thing in the chain currently. */
- bpstat bs = root_bs;
- static char message1[] =
- "Error evaluating expression for watchpoint %d\n";
- char message[sizeof (message1) + 30 /* slop */];
-
- /* Get the address where the breakpoint would have been. */
- bp_addr = *pc - DECR_PC_AFTER_BREAK;
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->enable == disabled
- || b->enable == shlib_disabled
- || b->enable == call_disabled)
- continue;
-
- if (b->type != bp_watchpoint
- && b->type != bp_hardware_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- && b->type != bp_hardware_breakpoint
- && b->type != bp_catch_fork
- && b->type != bp_catch_vfork
- && b->type != bp_catch_exec
- && b->type != bp_catch_catch
- && b->type != bp_catch_throw) /* a non-watchpoint bp */
- if (b->address != bp_addr || /* address doesn't match or */
- (overlay_debugging && /* overlay doesn't match */
- section_is_overlay (b->section) &&
- !section_is_mapped (b->section)))
- continue;
-
- if (b->type == bp_hardware_breakpoint
- && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK))
- continue;
-
- if (b->type != bp_watchpoint
- && b->type != bp_hardware_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- && not_a_breakpoint)
- continue;
-
- /* Is this a catchpoint of a load or unload? If so, did we
- get a load or unload of the specified library? If not,
- ignore it. */
- if ((b->type == bp_catch_load)
-#if defined(SOLIB_HAVE_LOAD_EVENT)
- && (!SOLIB_HAVE_LOAD_EVENT(inferior_pid)
- || ((b->dll_pathname != NULL)
- && (strcmp (b->dll_pathname, SOLIB_LOADED_LIBRARY_PATHNAME(inferior_pid)) != 0)))
-#endif
- )
- continue;
-
- if ((b->type == bp_catch_unload)
-#if defined(SOLIB_HAVE_UNLOAD_EVENT)
- && (!SOLIB_HAVE_UNLOAD_EVENT(inferior_pid)
- || ((b->dll_pathname != NULL)
- && (strcmp (b->dll_pathname, SOLIB_UNLOADED_LIBRARY_PATHNAME(inferior_pid)) != 0)))
-#endif
- )
- continue;
-
- if ((b->type == bp_catch_fork)
- && ! target_has_forked (inferior_pid, &b->forked_inferior_pid))
- continue;
-
- if ((b->type == bp_catch_vfork)
- && ! target_has_vforked (inferior_pid, &b->forked_inferior_pid))
- continue;
-
- if ((b->type == bp_catch_exec)
- && ! target_has_execd (inferior_pid, &b->exec_pathname))
- continue;
-
- if (ep_is_exception_catchpoint (b) &&
- !(current_exception_event = target_get_current_exception_event ()))
- continue;
-
- /* Come here if it's a watchpoint, or if the break address matches */
-
- bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */
-
- /* Watchpoints may change this, if not found to have triggered. */
- bs->stop = 1;
- bs->print = 1;
-
- 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. */
- bs->print_it = print_it_done;
- /* Stop. */
- break;
- case WP_VALUE_CHANGED:
- /* Stop. */
- ++(b->hit_count);
- break;
- case WP_VALUE_NOT_CHANGED:
- /* Don't stop. */
- bs->print_it = print_it_noop;
- bs->stop = 0;
- /* Don't consider this a hit. */
- --(b->hit_count);
- continue;
- default:
- /* Can't happen. */
- /* FALLTHROUGH */
- case 0:
- /* Error from catch_errors. */
- printf_filtered ("Watchpoint %d deleted.\n", b->number);
- if (b->related_breakpoint)
- b->related_breakpoint->disposition = del_at_next_stop;
- b->disposition = del_at_next_stop;
- /* We've already printed what needs to be printed. */
- bs->print_it = print_it_done;
-
- /* Stop. */
- break;
- }
- }
- else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint)
- {
- CORE_ADDR addr;
- value_ptr v;
- int found = 0;
-
- addr = target_stopped_data_address();
- if (addr == 0) continue;
- for (v = b->val_chain; v; v = v->next)
- {
- if (v->lval == lval_memory)
- {
- CORE_ADDR vaddr;
-
- vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- if (addr == vaddr)
- found = 1;
- }
- }
- if (found)
- switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL))
- {
- case WP_DELETED:
- /* We've already printed what needs to be printed. */
- bs->print_it = print_it_done;
- /* Stop. */
- break;
- case WP_VALUE_CHANGED:
- case WP_VALUE_NOT_CHANGED:
- /* Stop. */
- ++(b->hit_count);
- break;
- default:
- /* Can't happen. */
- case 0:
- /* Error from catch_errors. */
- printf_filtered ("Watchpoint %d deleted.\n", b->number);
- if (b->related_breakpoint)
- b->related_breakpoint->disposition = del_at_next_stop;
- b->disposition = del_at_next_stop;
- /* We've already printed what needs to be printed. */
- bs->print_it = print_it_done;
- break;
- }
- }
- else
- {
- /* By definition, an encountered breakpoint is a triggered
- breakpoint. */
- ++(b->hit_count);
-
- if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs)
- real_breakpoint = 1;
- }
-
- if (b->frame && b->frame != (get_current_frame ())->frame &&
- (b->type == bp_step_resume &&
- (INNER_THAN (get_current_frame ()->frame, b->frame))))
- bs->stop = 0;
- else
- {
- int value_is_zero = 0;
-
- if (b->cond)
- {
- /* Need to select the frame, with all that implies
- so that the conditions will have the right context. */
- select_frame (get_current_frame (), 0);
- value_is_zero
- = catch_errors (breakpoint_cond_eval, (b->cond),
- "Error in testing breakpoint condition:\n",
- RETURN_MASK_ALL);
- /* FIXME-someday, should give breakpoint # */
- free_all_values ();
- }
- if (b->cond && value_is_zero)
- {
- bs->stop = 0;
- /* Don't consider this a hit. */
- --(b->hit_count);
- }
- else if (b->ignore_count > 0)
- {
- b->ignore_count--;
- bs->stop = 0;
- }
- else
- {
- /* We will stop here */
- if (b->disposition == disable)
- b->enable = disabled;
- bs->commands = b->commands;
- if (b->silent)
- bs->print = 0;
- if (bs->commands &&
- (STREQ ("silent", bs->commands->line) ||
- (xdb_commands && STREQ ("Q", bs->commands->line))))
- {
- bs->commands = bs->commands->next;
- bs->print = 0;
- }
- }
- }
- /* Print nothing for this entry if we dont stop or if we dont print. */
- if (bs->stop == 0 || bs->print == 0)
- bs->print_it = print_it_noop;
- }
-
- bs->next = NULL; /* Terminate the chain */
- bs = root_bs->next; /* Re-grab the head of the chain */
-
- if ((DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) && bs)
- {
- if (real_breakpoint)
- {
- *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 (bs)
- 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. */
-
- /* step_resume entries: a step resume breakpoint overrides another
- breakpoint of signal handling (see comment in wait_for_inferior
- at first IN_SIGTRAMP where we set the step_resume breakpoint). */
- /* We handle the through_sigtramp_breakpoint the same way; having both
- one of those and a step_resume_breakpoint is probably very rare (?). */
-
- static const enum bpstat_what_main_action
- table[(int)class_last][(int)BPSTAT_WHAT_LAST] =
- {
- /* old action */
- /* kc ss sn sgl slr clr clrs sr ts shl shlr
- */
-/*no_effect*/ {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr},
-/*wp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr},
-/*wp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr},
-/*bp_nostop*/ {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr},
-/*bp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr},
-/*bp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr},
-/*long_jump*/ {slr, ss, sn, slr, err, err, err, sr, ts, shl, shlr},
-/*long_resume*/ {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr},
-/*step_resume*/ {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr},
-/*through_sig*/ {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr},
-/*shlib*/ {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr},
-/*catch_shlib*/ {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr}
- };
-
-#undef kc
-#undef ss
-#undef sn
-#undef sgl
-#undef slr
-#undef clr
-#undef clrs
-#undef err
-#undef sr
-#undef ts
-#undef shl
-#undef shlr
- enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING;
- 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_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 ()
-{
- struct breakpoint *b;
- ALL_BREAKPOINTS (b)
- if (b->enable == enabled && b->type == bp_watchpoint)
- return 1;
- return 0;
-}
-
-/* Nonzero if there are enabled hardware watchpoints. */
-int
-bpstat_have_active_hw_watchpoints ()
-{
- struct breakpoint *b;
- ALL_BREAKPOINTS (b)
- if ((b->enable == enabled) &&
- (b->inserted) &&
- ((b->type == bp_hardware_watchpoint) ||
- (b->type == bp_read_watchpoint) ||
- (b->type == bp_access_watchpoint)))
- return 1;
- return 0;
-}
-
-
-/* Given a bpstat that records zero or more triggered eventpoints, this
- function returns another bpstat which contains only the catchpoints
- on that first list, if any. */
-void
-bpstat_get_triggered_catchpoints (ep_list, cp_list)
- bpstat ep_list;
- bpstat * cp_list;
-{
- struct bpstats root_bs[1];
- bpstat bs = root_bs;
- struct breakpoint * ep;
- char * dll_pathname;
-
- bpstat_clear (cp_list);
- root_bs->next = NULL;
-
- for (; ep_list != NULL; ep_list = ep_list->next )
- {
- /* Is this eventpoint a catchpoint? If not, ignore it. */
- ep = ep_list->breakpoint_at;
- if (ep == NULL)
- break;
- if ((ep->type != bp_catch_load) &&
- (ep->type != bp_catch_unload) &&
- (ep->type != bp_catch_catch) &&
- (ep->type != bp_catch_throw)) /* pai: (temp) ADD fork/vfork here!! */
- continue;
-
- /* Yes; add it to the list. */
- bs = bpstat_alloc (ep, bs);
- *bs = *ep_list;
- bs->next = NULL;
- bs = root_bs->next;
-
-#if defined(SOLIB_ADD)
- /* Also, for each triggered catchpoint, tag it with the name of
- the library that caused this trigger. (We copy the name now,
- because it's only guaranteed to be available NOW, when the
- catchpoint triggers. Clients who may wish to know the name
- later must get it from the catchpoint itself.) */
- if (ep->triggered_dll_pathname != NULL)
- free (ep->triggered_dll_pathname);
- if (ep->type == bp_catch_load)
- dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid);
- else
- dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid);
-#else
- dll_pathname = NULL;
-#endif
- if (dll_pathname)
- {
- ep->triggered_dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1);
- strcpy (ep->triggered_dll_pathname, dll_pathname);
- }
- else
- ep->triggered_dll_pathname = NULL;
- }
-
- *cp_list = bs;
-}
-
-/* Print information on breakpoint number BNUM, or -1 if all.
- If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS
- is nonzero, process only watchpoints. */
-
-typedef struct {
- enum bptype type;
- char * description;
-} ep_type_description_t;
-
-static void
-breakpoint_1 (bnum, allflag)
- int bnum;
- int allflag;
-{
- register struct breakpoint *b;
- register struct command_line *l;
- register struct symbol *sym;
- CORE_ADDR last_addr = (CORE_ADDR)-1;
- int found_a_breakpoint = 0;
- static ep_type_description_t bptypes[] =
- {
- {bp_none, "?deleted?"},
- {bp_breakpoint, "breakpoint"},
- {bp_hardware_breakpoint, "hw breakpoint"},
- {bp_until, "until"},
- {bp_finish, "finish"},
- {bp_watchpoint, "watchpoint"},
- {bp_hardware_watchpoint, "hw watchpoint"},
- {bp_read_watchpoint, "read watchpoint"},
- {bp_access_watchpoint, "acc watchpoint"},
- {bp_longjmp, "longjmp"},
- {bp_longjmp_resume, "longjmp resume"},
- {bp_step_resume, "step resume"},
- {bp_through_sigtramp, "sigtramp"},
- {bp_watchpoint_scope, "watchpoint scope"},
- {bp_call_dummy, "call dummy"},
- {bp_shlib_event, "shlib events"},
- {bp_catch_load, "catch load"},
- {bp_catch_unload, "catch unload"},
- {bp_catch_fork, "catch fork"},
- {bp_catch_vfork, "catch vfork"},
- {bp_catch_exec, "catch exec"},
- {bp_catch_catch, "catch catch"},
- {bp_catch_throw, "catch throw"}
- };
-
- static char *bpdisps[] = {"del", "dstp", "dis", "keep"};
- static char bpenables[] = "nyn";
- char wrap_indent[80];
-
- ALL_BREAKPOINTS (b)
- if (bnum == -1
- || bnum == b->number)
- {
-/* We only print out user settable breakpoints unless the allflag is set. */
- if (!allflag
- && b->type != bp_breakpoint
- && b->type != bp_catch_load
- && b->type != bp_catch_unload
- && b->type != bp_catch_fork
- && b->type != bp_catch_vfork
- && b->type != bp_catch_exec
- && b->type != bp_catch_catch
- && b->type != bp_catch_throw
- && b->type != bp_hardware_breakpoint
- && b->type != bp_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- && b->type != bp_hardware_watchpoint)
- continue;
-
- if (!found_a_breakpoint++)
- {
- annotate_breakpoints_headers ();
-
- annotate_field (0);
- printf_filtered ("Num ");
- annotate_field (1);
- printf_filtered ("Type ");
- annotate_field (2);
- printf_filtered ("Disp ");
- annotate_field (3);
- printf_filtered ("Enb ");
- if (addressprint)
- {
- annotate_field (4);
- printf_filtered ("Address ");
- }
- annotate_field (5);
- printf_filtered ("What\n");
-
- annotate_breakpoints_table ();
- }
-
- annotate_record ();
- annotate_field (0);
- printf_filtered ("%-3d ", b->number);
- annotate_field (1);
- if ((int)b->type > (sizeof(bptypes)/sizeof(bptypes[0])))
- error ("bptypes table does not describe type #%d.", (int)b->type);
- if ((int)b->type != bptypes[(int)b->type].type)
- error ("bptypes table does not describe type #%d?", (int)b->type);
- printf_filtered ("%-14s ", bptypes[(int)b->type].description);
- annotate_field (2);
- printf_filtered ("%-4s ", bpdisps[(int)b->disposition]);
- annotate_field (3);
- printf_filtered ("%-3c ", bpenables[(int)b->enable]);
-
- strcpy (wrap_indent, " ");
- if (addressprint)
- strcat (wrap_indent, " ");
- switch (b->type)
- {
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
- annotate_field (5);
- print_expression (b->exp, gdb_stdout);
- break;
-
- case bp_catch_load:
- case bp_catch_unload:
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
- annotate_field (5);
- if (b->dll_pathname == NULL)
- printf_filtered ("<any library> ");
- else
- printf_filtered ("library \"%s\" ", b->dll_pathname);
- break;
-
- case bp_catch_fork:
- case bp_catch_vfork:
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
- annotate_field (5);
- if (b->forked_inferior_pid != 0)
- printf_filtered ("process %d ", b->forked_inferior_pid);
- break;
-
- case bp_catch_exec:
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
- annotate_field (5);
- if (b->exec_pathname != NULL)
- printf_filtered ("program \"%s\" ", b->exec_pathname);
- break;
- case bp_catch_catch:
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
- annotate_field (5);
- printf_filtered ("exception catch ");
- break;
- case bp_catch_throw:
- /* Field 4, the address, is omitted (which makes the columns
- not line up too nicely with the headers, but the effect
- is relatively readable). */
- annotate_field (5);
- printf_filtered ("exception throw ");
- break;
-
- case bp_breakpoint:
- case bp_hardware_breakpoint:
- case bp_until:
- case bp_finish:
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_step_resume:
- case bp_through_sigtramp:
- case bp_watchpoint_scope:
- case bp_call_dummy:
- case bp_shlib_event:
- if (addressprint)
- {
- annotate_field (4);
- /* FIXME-32x64: need a print_address_numeric with
- field width */
- printf_filtered
- ("%s ",
- local_hex_string_custom
- ((unsigned long) b->address, "08l"));
- }
-
- annotate_field (5);
-
- last_addr = b->address;
- if (b->source_file)
- {
- sym = find_pc_sect_function (b->address, b->section);
- if (sym)
- {
- fputs_filtered ("in ", gdb_stdout);
- fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout);
- wrap_here (wrap_indent);
- fputs_filtered (" at ", gdb_stdout);
- }
- fputs_filtered (b->source_file, gdb_stdout);
- printf_filtered (":%d", b->line_number);
- }
- else
- print_address_symbolic (b->address, gdb_stdout, demangle, " ");
- break;
- }
-
- if (b->thread != -1)
- printf_filtered (" thread %d", b->thread );
-
- printf_filtered ("\n");
-
- if (b->frame)
- {
- annotate_field (6);
-
- printf_filtered ("\tstop only in stack frame at ");
- print_address_numeric (b->frame, 1, gdb_stdout);
- printf_filtered ("\n");
- }
-
- if (b->cond)
- {
- annotate_field (7);
-
- printf_filtered ("\tstop only if ");
- print_expression (b->cond, gdb_stdout);
- printf_filtered ("\n");
- }
-
- if (b->thread != -1)
- {
- /* FIXME should make an annotation for this */
- printf_filtered ("\tstop only in thread %d\n", b->thread);
- }
-
- if (show_breakpoint_hit_counts && b->hit_count)
- {
- /* FIXME should make an annotation for this */
- if (ep_is_catchpoint (b))
- printf_filtered ("\tcatchpoint");
- else
- printf_filtered ("\tbreakpoint");
- printf_filtered (" already hit %d time%s\n",
- b->hit_count, (b->hit_count == 1 ? "" : "s"));
- }
-
- if (b->ignore_count)
- {
- annotate_field (8);
-
- printf_filtered ("\tignore next %d hits\n", b->ignore_count);
- }
-
- if ((l = b->commands))
- {
- annotate_field (9);
-
- while (l)
- {
- print_command_line (l, 4);
- l = l->next;
- }
- }
- }
-
- if (!found_a_breakpoint)
- {
- if (bnum == -1)
- printf_filtered ("No breakpoints or watchpoints.\n");
- else
- printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum);
- }
- else
- /* Compare against (CORE_ADDR)-1 in case some compiler decides
- that a comparison of an unsigned with -1 is always false. */
- if (last_addr != (CORE_ADDR)-1)
- set_next_address (last_addr);
-
- annotate_breakpoints_table_end ();
-}
-
-/* ARGSUSED */
-static void
-breakpoints_info (bnum_exp, from_tty)
- char *bnum_exp;
- int from_tty;
-{
- int bnum = -1;
-
- if (bnum_exp)
- bnum = parse_and_eval_address (bnum_exp);
-
- breakpoint_1 (bnum, 0);
-}
-
-#if MAINTENANCE_CMDS
-
-/* ARGSUSED */
-void
-maintenance_info_breakpoints (bnum_exp, from_tty)
- char *bnum_exp;
- int from_tty;
-{
- int bnum = -1;
-
- if (bnum_exp)
- bnum = parse_and_eval_address (bnum_exp);
-
- breakpoint_1 (bnum, 1);
-}
-
-#endif
-
-/* Print a message describing any breakpoints set at PC. */
-
-static void
-describe_other_breakpoints (pc, section)
- CORE_ADDR pc;
- asection *section;
-{
- register int others = 0;
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->address == pc)
- if (overlay_debugging == 0 ||
- b->section == section)
- others++;
- if (others > 0)
- {
- printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : "");
- ALL_BREAKPOINTS (b)
- if (b->address == pc)
- if (overlay_debugging == 0 ||
- b->section == section)
- {
- others--;
- printf_filtered
- ("%d%s%s ",
- b->number,
- ((b->enable == disabled || b->enable == shlib_disabled || b->enable == call_disabled)
- ? " (disabled)" : ""),
- (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 (valid, addr, symtab, line)
- int valid;
- CORE_ADDR addr;
- struct symtab *symtab;
- int line;
-{
- default_breakpoint_valid = valid;
- default_breakpoint_address = addr;
- default_breakpoint_symtab = symtab;
- default_breakpoint_line = line;
-}
-
-/* Rescan breakpoints at address ADDRESS,
- marking the first one as "first" and any others as "duplicates".
- This is so that the bpt instruction is only inserted once. */
-
-static void
-check_duplicates (address, section)
- CORE_ADDR address;
- asection *section;
-{
- register struct breakpoint *b;
- register int count = 0;
-
- if (address == 0) /* Watchpoints are uninteresting */
- return;
-
- ALL_BREAKPOINTS (b)
- if (b->enable != disabled
- && b->enable != shlib_disabled
- && b->enable != call_disabled
- && b->address == address
- && (overlay_debugging == 0 || b->section == section))
- {
- count++;
- b->duplicate = count > 1;
- }
-}
-
-/* Low level routine to set a breakpoint.
- Takes as args the three things that every breakpoint must have.
- Returns the breakpoint object so caller can set other things.
- Does not set the breakpoint number!
- Does not print anything.
-
- ==> This routine should not be called if there is a chance of later
- error(); otherwise it leaves a bogus breakpoint on the chain. Validate
- your arguments BEFORE calling this routine! */
-
-struct breakpoint *
-set_raw_breakpoint (sal)
- struct symtab_and_line sal;
-{
- register struct breakpoint *b, *b1;
-
- b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint));
- memset (b, 0, sizeof (*b));
- b->address = sal.pc;
- if (sal.symtab == NULL)
- b->source_file = NULL;
- else
- b->source_file = savestring (sal.symtab->filename,
- strlen (sal.symtab->filename));
- b->section = sal.section;
- b->language = current_language->la_language;
- b->input_radix = input_radix;
- b->thread = -1;
- b->line_number = sal.line;
- b->enable = enabled;
- b->next = 0;
- b->silent = 0;
- b->ignore_count = 0;
- b->commands = NULL;
- b->frame = 0;
- b->dll_pathname = NULL;
- b->triggered_dll_pathname = NULL;
- b->forked_inferior_pid = 0;
- b->exec_pathname = NULL;
-
- /* Add this breakpoint to the end of the chain
- so that a list of breakpoints will come out in order
- of increasing numbers. */
-
- b1 = breakpoint_chain;
- if (b1 == 0)
- breakpoint_chain = b;
- else
- {
- while (b1->next)
- b1 = b1->next;
- b1->next = b;
- }
-
- check_duplicates (sal.pc, sal.section);
- breakpoints_changed ();
-
- return b;
-}
-
-#ifdef GET_LONGJMP_TARGET
-
-static void
-create_longjmp_breakpoint (func_name)
- char *func_name;
-{
- struct symtab_and_line sal;
- struct breakpoint *b;
-
- INIT_SAL (&sal); /* initialize to zeroes */
- if (func_name != NULL)
- {
- struct minimal_symbol *m;
-
- m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL);
- if (m)
- sal.pc = SYMBOL_VALUE_ADDRESS (m);
- else
- return;
- }
- sal.section = find_pc_overlay (sal.pc);
- b = set_raw_breakpoint (sal);
- if (!b) return;
-
- b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume;
- b->disposition = donttouch;
- b->enable = disabled;
- b->silent = 1;
- if (func_name)
- b->addr_string = strsave(func_name);
- b->number = internal_breakpoint_number--;
-}
-
-#endif /* #ifdef GET_LONGJMP_TARGET */
-
-/* Call this routine when stepping and nexting to enable a breakpoint if we do
- a longjmp(). When we hit that breakpoint, call
- set_longjmp_resume_breakpoint() to figure out where we are going. */
-
-void
-enable_longjmp_breakpoint()
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->type == bp_longjmp)
- {
- b->enable = enabled;
- check_duplicates (b->address, b->section);
- }
-}
-
-void
-disable_longjmp_breakpoint()
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if ( b->type == bp_longjmp
- || b->type == bp_longjmp_resume)
- {
- b->enable = disabled;
- check_duplicates (b->address, b->section);
- }
-}
-
-#ifdef SOLIB_ADD
-void
-remove_solib_event_breakpoints ()
-{
- register struct breakpoint *b, *temp;
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- if (b->type == bp_shlib_event)
- delete_breakpoint (b);
-}
-
-void
-create_solib_event_breakpoint (address)
- CORE_ADDR address;
-{
- struct breakpoint *b;
- struct symtab_and_line sal;
-
- INIT_SAL (&sal); /* initialize to zeroes */
- sal.pc = address;
- sal.section = find_pc_overlay (sal.pc);
- b = set_raw_breakpoint (sal);
- b->number = internal_breakpoint_number--;
- b->disposition = donttouch;
- b->type = bp_shlib_event;
-}
-
-void
-disable_breakpoints_in_shlibs (silent)
- int silent;
-{
- struct breakpoint * b;
- int disabled_shlib_breaks = 0;
-
- /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
- ALL_BREAKPOINTS (b)
- {
-#if defined (PC_SOLIB)
- if (((b->type == bp_breakpoint) ||
- (b->type == bp_hardware_breakpoint)) &&
- (b->enable != shlib_disabled) &&
- (b->enable != call_disabled) &&
- ! b->duplicate &&
- PC_SOLIB (b->address))
- {
- b->enable = shlib_disabled;
- if (!silent)
- {
- if (!disabled_shlib_breaks)
- {
- target_terminal_ours_for_output ();
- printf_filtered ("Temporarily disabling shared library breakpoints:\n");
- }
- disabled_shlib_breaks = 1;
- printf_filtered ("%d ", b->number);
- }
- }
-#endif
- }
- if (disabled_shlib_breaks && !silent)
- printf_filtered ("\n");
-}
-
-/* Try to reenable any breakpoints in shared libraries. */
-void
-re_enable_breakpoints_in_shlibs ()
-{
- struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->enable == shlib_disabled)
- {
- char buf[1];
-
- /* Do not reenable the breakpoint if the shared library
- is still not mapped in. */
- if (target_read_memory (b->address, buf, 1) == 0)
- b->enable = enabled;
- }
-}
-
-#endif
-
-static void
-create_solib_load_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string, bp_kind)
- char * hookname;
- int tempflag;
- char * dll_pathname;
- char * cond_string;
- enum bptype bp_kind;
-{
- struct breakpoint * b;
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- struct cleanup * old_chain;
- struct cleanup * canonical_strings_chain = NULL;
- int i;
- char * addr_start = hookname;
- char * addr_end = NULL;
- char ** canonical = (char **) NULL;
- int thread = -1; /* All threads. */
-
- /* Set a breakpoint on the specified hook. */
- sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical);
- addr_end = hookname;
-
- if (sals.nelts == 0)
- {
- warning ("Unable to set a breakpoint on dynamic linker callback.");
- warning ("Suggest linking with /opt/langtools/lib/end.o.");
- warning ("GDB will be unable to track shl_load/shl_unload calls");
- return;
- }
- if (sals.nelts != 1)
- {
- warning ("Unable to set a unique breakpoint on dynamic linker callback.");
- warning ("GDB will be unable to track shl_load/shl_unload calls");
- return;
- }
-
- /* Make sure that all storage allocated in decode_line_1 gets freed in case
- the following errors out. */
- old_chain = make_cleanup (free, sals.sals);
- if (canonical != (char **)NULL)
- {
- make_cleanup (free, canonical);
- canonical_strings_chain = make_cleanup (null_cleanup, 0);
- if (canonical[0] != NULL)
- make_cleanup (free, canonical[0]);
- }
-
- resolve_sal_pc (&sals.sals[0]);
-
- /* Remove the canonical strings from the cleanup, they are needed below. */
- if (canonical != (char **)NULL)
- discard_cleanups (canonical_strings_chain);
-
- b = set_raw_breakpoint (sals.sals[0]);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->cond = NULL;
- b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
- b->thread = thread;
-
- if (canonical != (char **)NULL && canonical[0] != NULL)
- b->addr_string = canonical[0];
- else if (addr_start)
- b->addr_string = savestring (addr_start, addr_end - addr_start);
-
- b->enable = enabled;
- b->disposition = tempflag ? del : donttouch;
-
- if (dll_pathname == NULL)
- b->dll_pathname = NULL;
- else
- {
- b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1);
- strcpy (b->dll_pathname, dll_pathname);
- }
- b->type = bp_kind;
-
- mention (b);
- do_cleanups (old_chain);
-}
-
-void
-create_solib_load_event_breakpoint (hookname, tempflag, dll_pathname, cond_string)
- char * hookname;
- int tempflag;
- char * dll_pathname;
- char * cond_string;
-{
- create_solib_load_unload_event_breakpoint (hookname,
- tempflag,
- dll_pathname,
- cond_string,
- bp_catch_load);
-}
-
-void
-create_solib_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string)
- char * hookname;
- int tempflag;
- char * dll_pathname;
- char * cond_string;
-{
- create_solib_load_unload_event_breakpoint (hookname,
- tempflag,
- dll_pathname,
- cond_string,
- bp_catch_unload);
-}
-
-static void
-create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind)
- int tempflag;
- char * cond_string;
- enum bptype bp_kind;
-{
- struct symtab_and_line sal;
- struct breakpoint * b;
- int thread = -1; /* All threads. */
-
- INIT_SAL(&sal);
- sal.pc = 0;
- sal.symtab = NULL;
- sal.line = 0;
-
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->cond = NULL;
- b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
- b->thread = thread;
- b->addr_string = NULL;
- b->enable = enabled;
- b->disposition = tempflag ? del : donttouch;
- b->forked_inferior_pid = 0;
-
- b->type = bp_kind;
-
- mention (b);
-}
-
-void
-create_fork_event_catchpoint (tempflag, cond_string)
- int tempflag;
- char * cond_string;
-{
- create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork);
-}
-
-void
-create_vfork_event_catchpoint (tempflag, cond_string)
- int tempflag;
- char * cond_string;
-{
- create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork);
-}
-
-void
-create_exec_event_catchpoint (tempflag, cond_string)
- int tempflag;
- char * cond_string;
-{
- struct symtab_and_line sal;
- struct breakpoint * b;
- int thread = -1; /* All threads. */
-
- INIT_SAL(&sal);
- sal.pc = 0;
- sal.symtab = NULL;
- sal.line = 0;
-
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->cond = NULL;
- b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
- b->thread = thread;
- b->addr_string = NULL;
- b->enable = enabled;
- b->disposition = tempflag ? del : donttouch;
-
- b->type = bp_catch_exec;
-
- mention (b);
-}
-
-static int
-hw_breakpoint_used_count()
-{
- register struct breakpoint *b;
- int i = 0;
-
- ALL_BREAKPOINTS (b)
- {
- if (b->type == bp_hardware_breakpoint && b->enable == enabled)
- i++;
- }
-
- return i;
-}
-
-static int
-hw_watchpoint_used_count(type, other_type_used)
- enum bptype type;
- int *other_type_used;
-{
- register struct breakpoint *b;
- int i = 0;
-
- *other_type_used = 0;
- ALL_BREAKPOINTS (b)
- {
- if (b->enable == enabled)
- {
- if (b->type == type) i++;
- else if ((b->type == bp_hardware_watchpoint ||
- b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->enable == enabled)
- *other_type_used = 1;
- }
- }
- return i;
-}
-
-/* Call this after hitting the longjmp() breakpoint. Use this to set a new
- breakpoint at the target of the jmp_buf.
-
- FIXME - This ought to be done by setting a temporary breakpoint that gets
- deleted automatically... */
-
-void
-set_longjmp_resume_breakpoint(pc, frame)
- CORE_ADDR pc;
- struct frame_info *frame;
-{
- register struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- if (b->type == bp_longjmp_resume)
- {
- b->address = pc;
- b->enable = enabled;
- if (frame != NULL)
- b->frame = frame->frame;
- else
- b->frame = 0;
- check_duplicates (b->address, b->section);
- return;
- }
-}
-
-void
-disable_watchpoints_before_interactive_call_start ()
-{
- struct breakpoint * b;
-
- ALL_BREAKPOINTS (b)
- {
- if (((b->type == bp_watchpoint)
- || (b->type == bp_hardware_watchpoint)
- || (b->type == bp_read_watchpoint)
- || (b->type == bp_access_watchpoint)
- || ep_is_exception_catchpoint (b))
- && (b->enable == enabled))
- {
- b->enable = call_disabled;
- check_duplicates (b->address, b->section);
- }
- }
-}
-
-void
-enable_watchpoints_after_interactive_call_stop ()
-{
- struct breakpoint * b;
-
- ALL_BREAKPOINTS (b)
- {
- if (((b->type == bp_watchpoint)
- || (b->type == bp_hardware_watchpoint)
- || (b->type == bp_read_watchpoint)
- || (b->type == bp_access_watchpoint)
- || ep_is_exception_catchpoint (b))
- && (b->enable == call_disabled))
- {
- b->enable = enabled;
- check_duplicates (b->address, b->section);
- }
- }
-}
-
-
-/* Set a breakpoint that will evaporate an end of command
- at address specified by SAL.
- Restrict it to frame FRAME if FRAME is nonzero. */
-
-struct breakpoint *
-set_momentary_breakpoint (sal, frame, type)
- struct symtab_and_line sal;
- struct frame_info *frame;
- enum bptype type;
-{
- register struct breakpoint *b;
- b = set_raw_breakpoint (sal);
- b->type = type;
- b->enable = enabled;
- b->disposition = donttouch;
- b->frame = (frame ? frame->frame : 0);
-
- /* If we're debugging a multi-threaded program, then we
- want momentary breakpoints to be active in only a
- single thread of control. */
- if (in_thread_list (inferior_pid))
- b->thread = pid_to_thread_id (inferior_pid);
-
- return b;
-}
-
-
-/* Tell the user we have just set a breakpoint B. */
-
-static void
-mention (b)
- struct breakpoint *b;
-{
- int say_where = 0;
-
- /* FIXME: This is misplaced; mention() is called by things (like hitting a
- watchpoint) other than breakpoint creation. It should be possible to
- clean this up and at the same time replace the random calls to
- breakpoint_changed with this hook, as has already been done for
- delete_breakpoint_hook and so on. */
- if (create_breakpoint_hook)
- create_breakpoint_hook (b);
-
- switch (b->type)
- {
- case bp_none:
- printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number);
- break;
- case bp_watchpoint:
- printf_filtered ("Watchpoint %d: ", b->number);
- print_expression (b->exp, gdb_stdout);
- break;
- case bp_hardware_watchpoint:
- printf_filtered ("Hardware watchpoint %d: ", b->number);
- print_expression (b->exp, gdb_stdout);
- break;
- case bp_read_watchpoint:
- printf_filtered ("Hardware read watchpoint %d: ", b->number);
- print_expression (b->exp, gdb_stdout);
- break;
- case bp_access_watchpoint:
- printf_filtered ("Hardware access (read/write) watchpoint %d: ",b->number);
- print_expression (b->exp, gdb_stdout);
- break;
- case bp_breakpoint:
- printf_filtered ("Breakpoint %d", b->number);
- say_where = 1;
- break;
- case bp_hardware_breakpoint:
- printf_filtered ("Hardware assisted breakpoint %d", b->number);
- say_where = 1;
- break;
- case bp_catch_load:
- case bp_catch_unload:
- printf_filtered ("Catchpoint %d (%s %s)",
- b->number,
- (b->type == bp_catch_load) ? "load" : "unload",
- (b->dll_pathname != NULL) ? b->dll_pathname : "<any library>");
- break;
- case bp_catch_fork:
- case bp_catch_vfork:
- printf_filtered ("Catchpoint %d (%s)",
- b->number,
- (b->type == bp_catch_fork) ? "fork" : "vfork");
- break;
- case bp_catch_exec:
- printf_filtered ("Catchpoint %d (exec)",
- b->number);
- break;
- case bp_catch_catch:
- case bp_catch_throw:
- printf_filtered ("Catchpoint %d (%s)",
- b->number,
- (b->type == bp_catch_catch) ? "catch" : "throw");
- break;
-
- case bp_until:
- case bp_finish:
- case bp_longjmp:
- case bp_longjmp_resume:
- case bp_step_resume:
- case bp_through_sigtramp:
- case bp_call_dummy:
- case bp_watchpoint_scope:
- case bp_shlib_event:
- break;
- }
- if (say_where)
- {
- if (addressprint || b->source_file == NULL)
- {
- printf_filtered (" at ");
- print_address_numeric (b->address, 1, gdb_stdout);
- }
- if (b->source_file)
- printf_filtered (": file %s, line %d.",
- b->source_file, b->line_number);
- TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, b, 1));
- TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos));
- }
- printf_filtered ("\n");
-}
-
-
-/* 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 (arg, flag, from_tty)
- char *arg;
- int flag, from_tty;
-{
- int tempflag, hardwareflag;
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- register struct expression *cond = 0;
- register struct breakpoint *b;
-
- /* Pointers in arg to the start, and one past the end, of the condition. */
- char *cond_start = NULL;
- char *cond_end = NULL;
- /* Pointers in arg to the start, and one past the end,
- of the address part. */
- char *addr_start = NULL;
- char *addr_end = NULL;
- struct cleanup *old_chain;
- struct cleanup *canonical_strings_chain = NULL;
- char **canonical = (char **)NULL;
- int i;
- int thread;
-
- hardwareflag = flag & BP_HARDWAREFLAG;
- tempflag = flag & BP_TEMPFLAG;
-
- sals.sals = NULL;
- sals.nelts = 0;
-
- INIT_SAL (&sal); /* initialize to zeroes */
-
- /* If no arg given, or if first arg is 'if ', use the default breakpoint. */
-
- if (!arg || (arg[0] == 'i' && arg[1] == 'f'
- && (arg[2] == ' ' || arg[2] == '\t')))
- {
- if (default_breakpoint_valid)
- {
- sals.sals = (struct symtab_and_line *)
- xmalloc (sizeof (struct symtab_and_line));
- sal.pc = default_breakpoint_address;
- sal.line = default_breakpoint_line;
- sal.symtab = default_breakpoint_symtab;
- sal.section = find_pc_overlay (sal.pc);
- sals.sals[0] = sal;
- sals.nelts = 1;
- }
- else
- error ("No default breakpoint address now.");
- }
- else
- {
- addr_start = arg;
-
- /* Force almost all breakpoints to be in terms of the
- current_source_symtab (which is decode_line_1's default). This
- should produce the results we want almost all of the time while
- leaving default_breakpoint_* alone. */
- if (default_breakpoint_valid
- && (!current_source_symtab
- || (arg && (*arg == '+' || *arg == '-'))))
- sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
- default_breakpoint_line, &canonical);
- else
- sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical);
-
- addr_end = arg;
- }
-
- if (! sals.nelts)
- return;
-
- /* Make sure that all storage allocated in decode_line_1 gets freed in case
- the following `for' loop errors out. */
- old_chain = make_cleanup (free, sals.sals);
- if (canonical != (char **)NULL)
- {
- make_cleanup (free, canonical);
- canonical_strings_chain = make_cleanup (null_cleanup, 0);
- for (i = 0; i < sals.nelts; i++)
- {
- if (canonical[i] != NULL)
- make_cleanup (free, canonical[i]);
- }
- }
-
- thread = -1; /* No specific thread yet */
-
- /* Resolve all line numbers to PC's, and verify that conditions
- can be parsed, before setting any breakpoints. */
- for (i = 0; i < sals.nelts; i++)
- {
- char *tok, *end_tok;
- int toklen;
-
- resolve_sal_pc (&sals.sals[i]);
-
- /* It's possible for the PC to be nonzero, but still an illegal
- value on some targets.
-
- For example, on HP-UX if you start gdb, and before running the
- inferior you try to set a breakpoint on a shared library function
- "foo" where the inferior doesn't call "foo" directly but does
- pass its address to another function call, then we do find a
- minimal symbol for the "foo", but it's address is invalid.
- (Appears to be an index into a table that the loader sets up
- when the inferior is run.)
-
- Give the target a chance to bless sals.sals[i].pc before we
- try to make a breakpoint for it. */
- if (PC_REQUIRES_RUN_BEFORE_USE(sals.sals[i].pc))
- {
- error ("Cannot break on %s without a running program.", addr_start);
- }
-
- tok = arg;
-
- while (tok && *tok)
- {
- while (*tok == ' ' || *tok == '\t')
- tok++;
-
- end_tok = tok;
-
- while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
- end_tok++;
-
- toklen = end_tok - tok;
-
- if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
- {
- tok = cond_start = end_tok + 1;
- cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
- cond_end = tok;
- }
- else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
- {
- char *tmptok;
-
- tok = end_tok + 1;
- tmptok = tok;
- thread = strtol (tok, &tok, 0);
- if (tok == tmptok)
- error ("Junk after thread keyword.");
- if (!valid_thread_id (thread))
- error ("Unknown thread %d\n", thread);
- }
- else
- error ("Junk at end of arguments.");
- }
- }
- if (hardwareflag)
- {
- int i, target_resources_ok;
-
- i = hw_breakpoint_used_count ();
- target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT (
- bp_hardware_breakpoint, i + sals.nelts, 0);
- if (target_resources_ok == 0)
- error ("No hardware breakpoint support in the target.");
- else if (target_resources_ok < 0)
- error ("Hardware breakpoints used exceeds limit.");
- }
-
- /* Remove the canonical strings from the cleanup, they are needed below. */
- if (canonical != (char **)NULL)
- discard_cleanups (canonical_strings_chain);
-
- /* Now set all the breakpoints. */
- for (i = 0; i < sals.nelts; i++)
- {
- sal = sals.sals[i];
-
- if (from_tty)
- describe_other_breakpoints (sal.pc, sal.section);
-
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint;
- b->cond = cond;
- b->thread = thread;
-
- /* If a canonical line spec is needed use that instead of the
- command string. */
- if (canonical != (char **)NULL && canonical[i] != NULL)
- b->addr_string = canonical[i];
- else if (addr_start)
- b->addr_string = savestring (addr_start, addr_end - addr_start);
- if (cond_start)
- b->cond_string = savestring (cond_start, cond_end - cond_start);
-
- b->enable = enabled;
- b->disposition = tempflag ? del : donttouch;
- mention (b);
- }
-
- if (sals.nelts > 1)
- {
- printf_filtered ("Multiple breakpoints were set.\n");
- printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
- }
- do_cleanups (old_chain);
-}
-
-static void
-break_at_finish_at_depth_command_1 (arg, flag, from_tty)
- char *arg;
- int flag;
- int from_tty;
-{
- struct frame_info *frame;
- CORE_ADDR low, high, selected_pc = 0;
- char *extra_args, *level_arg, *addr_string;
- int extra_args_len = 0, if_arg = 0;
-
- if (!arg ||
- (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
- {
-
- if (default_breakpoint_valid)
- {
- if (selected_frame)
- {
- selected_pc = selected_frame->pc;
- if (arg)
- if_arg = 1;
- }
- else
- error ("No selected frame.");
- }
- else
- error ("No default breakpoint address now.");
- }
- else
- {
- extra_args = strchr (arg, ' ');
- if (extra_args)
- {
- extra_args++;
- extra_args_len = strlen (extra_args);
- level_arg = (char *) xmalloc (extra_args - arg);
- strncpy (level_arg, arg, extra_args - arg - 1);
- level_arg[extra_args - arg - 1] = '\0';
- }
- else
- {
- level_arg = (char *) xmalloc (strlen (arg) + 1);
- strcpy (level_arg, arg);
- }
-
- frame = parse_frame_specification (level_arg);
- if (frame)
- selected_pc = frame->pc;
- else
- selected_pc = 0;
- }
- if (if_arg)
- {
- extra_args = arg;
- extra_args_len = strlen (arg);
- }
-
- if (selected_pc)
- {
- if (find_pc_partial_function(selected_pc, (char **)NULL, &low, &high))
- {
- addr_string = (char *) xmalloc (26 + extra_args_len);
- if (extra_args_len)
- sprintf (addr_string, "*0x%x %s", high, extra_args);
- else
- sprintf (addr_string, "*0x%x", high);
- break_command_1 (addr_string, flag, from_tty);
- free (addr_string);
- }
- else
- error ("No function contains the specified address");
- }
- else
- error ("Unable to set breakpoint at procedure exit");
-}
-
-
-static void
-break_at_finish_command_1 (arg, flag, from_tty)
- char *arg;
- int flag;
- int from_tty;
-{
- char *addr_string, *break_string, *beg_addr_string;
- CORE_ADDR low, high;
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- struct cleanup *old_chain;
- char *extra_args;
- int extra_args_len = 0;
- int i, if_arg = 0;
-
- if (!arg ||
- (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
- {
- if (default_breakpoint_valid)
- {
- if (selected_frame)
- {
- addr_string = (char *) xmalloc (15);
- sprintf (addr_string, "*0x%x", selected_frame->pc);
- if (arg)
- if_arg = 1;
- }
- else
- error ("No selected frame.");
- }
- else
- error ("No default breakpoint address now.");
- }
- else
- {
- addr_string = (char *) xmalloc (strlen (arg) + 1);
- strcpy (addr_string, arg);
- }
-
- if (if_arg)
- {
- extra_args = arg;
- extra_args_len = strlen (arg);
- }
- else
- if (arg)
- {
- /* get the stuff after the function name or address */
- extra_args = strchr (arg, ' ');
- if (extra_args)
- {
- extra_args++;
- extra_args_len = strlen (extra_args);
- }
- }
-
- sals.sals = NULL;
- sals.nelts = 0;
-
- beg_addr_string = addr_string;
- sals = decode_line_1 (&addr_string, 1, (struct symtab *)NULL, 0,
- (char ***)NULL);
-
- free (beg_addr_string);
- old_chain = make_cleanup (free, sals.sals);
- for (i = 0; (i < sals.nelts); i++)
- {
- sal = sals.sals[i];
- if (find_pc_partial_function (sal.pc, (char **)NULL, &low, &high))
- {
- break_string = (char *) xmalloc (extra_args_len + 26);
- if (extra_args_len)
- sprintf (break_string, "*0x%x %s", high, extra_args);
- else
- sprintf (break_string, "*0x%x", high);
- break_command_1 (break_string, flag, from_tty);
- free(break_string);
- }
- else
- error ("No function contains the specified address");
- }
- if (sals.nelts > 1)
- {
- printf_filtered ("Multiple breakpoints were set.\n");
- printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
- }
- do_cleanups(old_chain);
-}
-
-
-/* Helper function for break_command_1 and disassemble_command. */
-
-void
-resolve_sal_pc (sal)
- 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 (arg, from_tty)
- char *arg;
- int from_tty;
-{
- break_command_1 (arg, 0, from_tty);
-}
-
-void
-break_at_finish_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- break_at_finish_command_1 (arg, 0, from_tty);
-}
-
-void
-break_at_finish_at_depth_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- break_at_finish_at_depth_command_1 (arg, 0, from_tty);
-}
-
-void
-tbreak_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- break_command_1 (arg, BP_TEMPFLAG, from_tty);
-}
-
-void
-tbreak_at_finish_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty);
-}
-
-static void
-hbreak_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
-}
-
-static void
-thbreak_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
-}
-
-static void
-stop_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- printf_filtered ("Specify the type of breakpoint to set.\n\
-Usage: stop in <function | address>\n\
- stop at <line>\n");
-}
-
-static void
-stopin_command (arg, from_tty)
- 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 (arg, from_tty)
- 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: 0: watch write, 1: watch read, 2: watch access(read or write) */
-static void
-watch_command_1 (arg, accessflag, from_tty)
- char *arg;
- int accessflag;
- int from_tty;
-{
- struct breakpoint *b;
- struct symtab_and_line sal;
- struct expression *exp;
- struct block *exp_valid_block;
- struct value *val, *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 == 1) bp_type = bp_read_watchpoint;
- else if (accessflag == 2) bp_type = bp_access_watchpoint;
- else bp_type = bp_hardware_watchpoint;
-
- mem_cnt = can_use_hardware_watchpoint (val);
- if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint)
- error ("Expression cannot be implemented with read/access watchpoint.");
- if (mem_cnt != 0) {
- i = hw_watchpoint_used_count (bp_type, &other_type_used);
- target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT(
- bp_type, i + mem_cnt, other_type_used);
- if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint)
- error ("Target does not have this type of hardware watchpoint support.");
- if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint)
- error ("Target resources have been allocated for other types of watchpoints.");
- }
-
-#if defined(HPUXHPPA)
- /* ??rehrauer: DTS #CHFts23014 notes that on HP-UX if you set a h/w
- watchpoint before the "run" command, the inferior dies with a e.g.,
- SIGILL once you start it. I initially believed this was due to a
- bad interaction between page protection traps and the initial
- startup sequence by the dynamic linker.
-
- However, I tried avoiding that by having HP-UX's implementation of
- TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid
- yet, which forced slow watches before a "run" or "attach", and it
- still fails somewhere in the startup code.
-
- Until I figure out what's happening, I'm disallowing watches altogether
- before the "run" or "attach" command. We'll tell the user they must
- set watches after getting the program started. */
- if (! target_has_execution)
- {
- warning ("can't do that without a running program; try \"break main\", \"run\" first");
- return;
- }
-#endif /* HPUXHPPA */
-
- /* Now set up the breakpoint. */
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->disposition = donttouch;
- b->exp = exp;
- b->exp_valid_block = exp_valid_block;
- b->exp_string = savestring (exp_start, exp_end - exp_start);
- b->val = val;
- b->cond = cond;
- if (cond_start)
- b->cond_string = savestring (cond_start, cond_end - cond_start);
- else
- b->cond_string = 0;
-
- frame = block_innermost_frame (exp_valid_block);
- if (frame)
- {
- prev_frame = get_prev_frame (frame);
- b->watchpoint_frame = frame->frame;
- }
- else
- b->watchpoint_frame = (CORE_ADDR)0;
-
- if (mem_cnt && target_resources_ok > 0)
- b->type = bp_type;
- else
- b->type = bp_watchpoint;
-
- /* If the expression is "local", then set up a "watchpoint scope"
- breakpoint at the point where we've left the scope of the watchpoint
- expression. */
- if (innermost_block)
- {
- if (prev_frame)
- {
- struct breakpoint *scope_breakpoint;
- struct symtab_and_line scope_sal;
-
- INIT_SAL (&scope_sal); /* initialize to zeroes */
- scope_sal.pc = get_frame_pc (prev_frame);
- scope_sal.section = find_pc_overlay (scope_sal.pc);
-
- scope_breakpoint = set_raw_breakpoint (scope_sal);
- set_breakpoint_count (breakpoint_count + 1);
- scope_breakpoint->number = breakpoint_count;
-
- scope_breakpoint->type = bp_watchpoint_scope;
- scope_breakpoint->enable = enabled;
-
- /* Automatically delete the breakpoint when it hits. */
- scope_breakpoint->disposition = del;
-
- /* Only break in the proper frame (help with recursion). */
- scope_breakpoint->frame = prev_frame->frame;
-
- /* Set the address at which we will stop. */
- scope_breakpoint->address = get_frame_pc (prev_frame);
-
- /* The scope breakpoint is related to the watchpoint. We
- will need to act on them together. */
- b->related_breakpoint = scope_breakpoint;
- }
- }
- value_free_to_mark (mark);
- mention (b);
-}
-
-/* Return count of locations need to be watched and can be handled
- in hardware. If the watchpoint can not be handled
- in hardware return zero. */
-
-#if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
-#define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_size) \
- ((byte_size) <= (REGISTER_SIZE))
-#endif
-
-static int
-can_use_hardware_watchpoint (v)
- struct value *v;
-{
- int found_memory_cnt = 0;
-
- /* Did the user specifically forbid us to use hardware watchpoints? */
- if (! can_use_hw_watchpoints)
- return 0;
-
- /* Make sure all the intermediate values are in memory. Also make sure
- we found at least one memory expression. Guards against watch 0x12345,
- which is meaningless, but could cause errors if one tries to insert a
- hardware watchpoint for the constant expression. */
- for ( ; v; v = v->next)
- {
- if (v->lval == lval_memory)
- {
- if (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (TYPE_LENGTH (VALUE_TYPE (v))))
- found_memory_cnt++;
- }
- else if (v->lval != not_lval && v->modifiable == 0)
- return 0;
- }
-
- /* The expression itself looks suitable for using a hardware
- watchpoint, but give the target machine a chance to reject it. */
- return found_memory_cnt;
-}
-
-static void watch_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- watch_command_1 (arg, 0, from_tty);
-}
-
-static void rwatch_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- watch_command_1 (arg, 1, from_tty);
-}
-
-static void awatch_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- watch_command_1 (arg, 2, from_tty);
-}
-
-
-/* Helper routine for the until_command routine in infcmd.c. Here
- because it uses the mechanisms of breakpoints. */
-
-/* ARGSUSED */
-void
-until_break_command (arg, from_tty)
- 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;
-
- 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];
- free ((PTR)sals.sals); /* malloc'd, so freed */
-
- if (*arg)
- error ("Junk at end of arguments.");
-
- resolve_sal_pc (&sal);
-
- breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until);
-
- old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
-
- /* 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);
- make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
- }
-
- proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
- 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 (name)
- char *name;
-{
-}
-
-static int
-disable_catch_breakpoint ()
-{
-}
-
-static int
-delete_catch_breakpoint ()
-{
-}
-
-static int
-enable_catch_breakpoint ()
-{
-}
-#endif /* 0 */
-
-struct sal_chain
-{
- struct sal_chain *next;
- struct symtab_and_line sal;
-};
-
-/* Not really used -- invocation in handle_gnu_4_16_catch_command
- had been commented out in the v.4.16 sources, and stays
- disabled there now because "catch NAME" syntax isn't allowed.
- pai/1997-07-11 */
-/* This isn't used; I don't know what it was for. */
-/* For each catch clause identified in ARGS, run FUNCTION
- with that clause as an argument. */
-static struct symtabs_and_lines
-map_catch_names (args, function)
- char *args;
- int (*function)();
-{
- 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++;
- }
-}
-
-/* This shares a lot of code with `print_frame_label_vars' from stack.c. */
-
-static struct symtabs_and_lines
-get_catch_sals (this_level_only)
- int this_level_only;
-{
- register struct blockvector *bl;
- register struct block *block;
- int index, have_default = 0;
- CORE_ADDR pc;
- struct symtabs_and_lines sals;
- struct sal_chain *sal_chain = 0;
- char *blocks_searched;
-
- /* Not sure whether an error message is always the correct response,
- but it's better than a core dump. */
- if (selected_frame == NULL)
- error ("No selected frame.");
- block = get_frame_block (selected_frame);
- pc = selected_frame->pc;
-
- sals.nelts = 0;
- sals.sals = NULL;
-
- if (block == 0)
- error ("No symbol table info available.\n");
-
- bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
- blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
- memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
-
- while (block != 0)
- {
- CORE_ADDR end = BLOCK_END (block) - 4;
- int last_index;
-
- if (bl != blockvector_for_pc (end, &index))
- error ("blockvector blotch");
- if (BLOCKVECTOR_BLOCK (bl, index) != block)
- error ("blockvector botch");
- last_index = BLOCKVECTOR_NBLOCKS (bl);
- index += 1;
-
- /* Don't print out blocks that have gone by. */
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
- index++;
-
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
- {
- if (blocks_searched[index] == 0)
- {
- struct block *b = BLOCKVECTOR_BLOCK (bl, index);
- int nsyms;
- register int i;
- register struct symbol *sym;
-
- nsyms = BLOCK_NSYMS (b);
-
- for (i = 0; i < nsyms; i++)
- {
- sym = BLOCK_SYM (b, i);
- if (STREQ (SYMBOL_NAME (sym), "default"))
- {
- if (have_default)
- continue;
- have_default = 1;
- }
- if (SYMBOL_CLASS (sym) == LOC_LABEL)
- {
- struct sal_chain *next = (struct sal_chain *)
- alloca (sizeof (struct sal_chain));
- next->next = sal_chain;
- next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
- sal_chain = next;
- }
- }
- blocks_searched[index] = 1;
- }
- index++;
- }
- if (have_default)
- break;
- if (sal_chain && this_level_only)
- break;
-
- /* After handling the function's top-level block, stop.
- Don't continue to its superblock, the block of
- per-file symbols. */
- if (BLOCK_FUNCTION (block))
- break;
- block = BLOCK_SUPERBLOCK (block);
- }
-
- if (sal_chain)
- {
- struct sal_chain *tmp_chain;
-
- /* Count the number of entries. */
- for (index = 0, tmp_chain = sal_chain; tmp_chain;
- tmp_chain = tmp_chain->next)
- index++;
-
- sals.nelts = index;
- sals.sals = (struct symtab_and_line *)
- xmalloc (index * sizeof (struct symtab_and_line));
- for (index = 0; sal_chain; sal_chain = sal_chain->next, index++)
- sals.sals[index] = sal_chain->sal;
- }
-
- return sals;
-}
-
-static void
-ep_skip_leading_whitespace (s)
- char ** s;
-{
- if ((s == NULL) || (*s == NULL))
- return;
- while (isspace(**s))
- *s += 1;
-}
-
-/* This function examines a string, and attempts to find a token
- that might be an event name in the leading characters. If a
- possible match is found, a pointer to the last character of
- the token is returned. Else, NULL is returned. */
-static char *
-ep_find_event_name_end (arg)
- char * arg;
-{
- char * s = arg;
- char * event_name_end = NULL;
-
- /* If we could depend upon the presense of strrpbrk, we'd use that... */
- if (arg == NULL)
- return NULL;
-
- /* We break out of the loop when we find a token delimiter.
- Basically, we're looking for alphanumerics and underscores;
- anything else delimites the token. */
- while (*s != '\0')
- {
- if (! isalnum(*s) && (*s != '_'))
- break;
- event_name_end = s;
- s++;
- }
-
- return event_name_end;
-}
-
-
-/* This function attempts to parse an optional "if <cond>" clause
- from the arg string. If one is not found, it returns NULL.
-
- Else, it returns a pointer to the condition string. (It does not
- attempt to evaluate the string against a particular block.) And,
- it updates arg to point to the first character following the parsed
- if clause in the arg string. */
-static char *
-ep_parse_optional_if_clause (arg)
- char ** arg;
-{
- char * cond_string;
-
- if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace((*arg)[2]))
- return NULL;
-
- /* Skip the "if" keyword. */
- (*arg) += 2;
-
- /* Skip any extra leading whitespace, and record the start of the
- condition string. */
- ep_skip_leading_whitespace (arg);
- cond_string = *arg;
-
- /* Assume that the condition occupies the remainder of the arg string. */
- (*arg) += strlen (cond_string);
-
- return cond_string;
-}
-
-/* This function attempts to parse an optional filename from the arg
- string. If one is not found, it returns NULL.
-
- Else, it returns a pointer to the parsed filename. (This function
- makes no attempt to verify that a file of that name exists, or is
- accessible.) And, it updates arg to point to the first character
- following the parsed filename in the arg string.
-
- Note that clients needing to preserve the returned filename for
- future access should copy it to their own buffers. */
-static char *
-ep_parse_optional_filename (arg)
- char ** arg;
-{
- static char filename [1024];
- char * arg_p = *arg;
- int i;
- char c;
-
- if ((*arg_p == '\0') || isspace (*arg_p))
- return NULL;
-
- for (i=0; ; i++)
- {
- c = *arg_p;
- if (isspace (c))
- c = '\0';
- filename[i] = c;
- if (c == '\0')
- break;
- arg_p++;
- }
- *arg = arg_p;
-
- return filename;
-}
-
-/* Commands to deal with catching events, such as signals, exceptions,
- process start/exit, etc. */
-
-typedef enum {catch_fork, catch_vfork} catch_fork_kind;
-
-static void
-catch_fork_command_1 (fork_kind, arg, tempflag, from_tty)
- catch_fork_kind fork_kind;
- char * arg;
- int tempflag;
- int from_tty;
-{
- char * cond_string = NULL;
-
- ep_skip_leading_whitespace (&arg);
-
- /* The allowed syntax is:
- catch [v]fork
- catch [v]fork if <cond>
-
- First, check if there's an if clause. */
- cond_string = ep_parse_optional_if_clause (&arg);
-
- if ((*arg != '\0') && !isspace (*arg))
- error ("Junk at end of arguments.");
-
- /* If this target supports it, create a fork or vfork catchpoint
- and enable reporting of such events. */
- switch (fork_kind) {
- case catch_fork :
- create_fork_event_catchpoint (tempflag, cond_string);
- break;
- case catch_vfork :
- create_vfork_event_catchpoint (tempflag, cond_string);
- break;
- default :
- error ("unsupported or unknown fork kind; cannot catch it");
- break;
- }
-}
-
-static void
-catch_exec_command_1 (arg, tempflag, from_tty)
- char * arg;
- int tempflag;
- int from_tty;
-{
- char * cond_string = NULL;
-
- ep_skip_leading_whitespace (&arg);
-
- /* The allowed syntax is:
- catch exec
- catch exec if <cond>
-
- First, check if there's an if clause. */
- cond_string = ep_parse_optional_if_clause (&arg);
-
- if ((*arg != '\0') && !isspace (*arg))
- error ("Junk at end of arguments.");
-
- /* If this target supports it, create an exec catchpoint
- and enable reporting of such events. */
- create_exec_event_catchpoint (tempflag, cond_string);
-}
-
-#if defined(SOLIB_ADD)
-static void
-catch_load_command_1 (arg, tempflag, from_tty)
- char * arg;
- int tempflag;
- int from_tty;
-{
- char * dll_pathname = NULL;
- char * cond_string = NULL;
-
- ep_skip_leading_whitespace (&arg);
-
- /* The allowed syntax is:
- catch load
- catch load if <cond>
- catch load <filename>
- catch load <filename> if <cond>
-
- The user is not allowed to specify the <filename> after an
- if clause.
-
- We'll ignore the pathological case of a file named "if".
-
- First, check if there's an if clause. If so, then there
- cannot be a filename. */
- cond_string = ep_parse_optional_if_clause (&arg);
-
- /* If there was an if clause, then there cannot be a filename.
- Else, there might be a filename and an if clause. */
- if (cond_string == NULL)
- {
- dll_pathname = ep_parse_optional_filename (&arg);
- ep_skip_leading_whitespace (&arg);
- cond_string = ep_parse_optional_if_clause (&arg);
- }
-
- if ((*arg != '\0') && !isspace (*arg))
- error ("Junk at end of arguments.");
-
- /* Create a load breakpoint that only triggers when a load of
- the specified dll (or any dll, if no pathname was specified)
- occurs. */
- SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string);
-}
-
-static void
-catch_unload_command_1 (arg, tempflag, from_tty)
- char * arg;
- int tempflag;
- int from_tty;
-{
- char * dll_pathname = NULL;
- char * cond_string = NULL;
-
- ep_skip_leading_whitespace (&arg);
-
- /* The allowed syntax is:
- catch unload
- catch unload if <cond>
- catch unload <filename>
- catch unload <filename> if <cond>
-
- The user is not allowed to specify the <filename> after an
- if clause.
-
- We'll ignore the pathological case of a file named "if".
-
- First, check if there's an if clause. If so, then there
- cannot be a filename. */
- cond_string = ep_parse_optional_if_clause (&arg);
-
- /* If there was an if clause, then there cannot be a filename.
- Else, there might be a filename and an if clause. */
- if (cond_string == NULL)
- {
- dll_pathname = ep_parse_optional_filename (&arg);
- ep_skip_leading_whitespace (&arg);
- cond_string = ep_parse_optional_if_clause (&arg);
- }
-
- if ((*arg != '\0') && !isspace (*arg))
- error ("Junk at end of arguments.");
-
- /* Create an unload breakpoint that only triggers when an unload of
- the specified dll (or any dll, if no pathname was specified)
- occurs. */
- SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string);
-}
-#endif /* SOLIB_ADD */
-
-/* Commands to deal with catching exceptions. */
-
-/* Set a breakpoint at the specified callback routine for an
- exception event callback */
-
-static void
-create_exception_catchpoint (tempflag, cond_string, ex_event, sal)
- int tempflag;
- char * cond_string;
- enum exception_event_kind ex_event;
- struct symtab_and_line * sal;
-{
- struct breakpoint * b;
- int i;
- int thread = -1; /* All threads. */
-
- if (!sal) /* no exception support? */
- return;
-
- b = set_raw_breakpoint (*sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->cond = NULL;
- b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string));
- b->thread = thread;
- b->addr_string = NULL;
- b->enable = enabled;
- b->disposition = tempflag ? del : donttouch;
- switch (ex_event)
- {
- case EX_EVENT_THROW:
- b->type = bp_catch_throw;
- break;
- case EX_EVENT_CATCH:
- b->type = bp_catch_catch;
- break;
- default: /* error condition */
- b->type = bp_none;
- b->enable = disabled;
- error ("Internal error -- invalid catchpoint kind");
- }
- mention (b);
-}
-
-/* Deal with "catch catch" and "catch throw" commands */
-
-static void
-catch_exception_command_1 (ex_event, arg, tempflag, from_tty)
- enum exception_event_kind ex_event;
- char * arg;
- int tempflag;
- int from_tty;
-{
- char * cond_string = NULL;
- struct symtab_and_line * sal = NULL;
-
- ep_skip_leading_whitespace (&arg);
-
- cond_string = ep_parse_optional_if_clause (&arg);
-
- if ((*arg != '\0') && !isspace (*arg))
- error ("Junk at end of arguments.");
-
- if ((ex_event != EX_EVENT_THROW) &&
- (ex_event != EX_EVENT_CATCH))
- error ("Unsupported or unknown exception event; cannot catch it");
-
- /* See if we can find a callback routine */
- sal = target_enable_exception_callback (ex_event, 1);
-
- if (sal)
- {
- /* We have callbacks from the runtime system for exceptions.
- Set a breakpoint on the sal found, if no errors */
- if (sal != (struct symtab_and_line *) -1)
- create_exception_catchpoint (tempflag, cond_string, ex_event, sal);
- else
- return; /* something went wrong with setting up callbacks */
- }
- else
- {
- /* No callbacks from runtime system for exceptions.
- Try GNU C++ exception breakpoints using labels in debug info. */
- if (ex_event == EX_EVENT_CATCH)
- {
- handle_gnu_4_16_catch_command (arg, tempflag, from_tty);
- }
- else if (ex_event == EX_EVENT_THROW)
- {
- /* Set a breakpoint on __raise_exception () */
-
- fprintf_filtered (gdb_stderr, "Unsupported with this platform/compiler combination.\n");
- fprintf_filtered (gdb_stderr, "Perhaps you can achieve the effect you want by setting\n");
- fprintf_filtered (gdb_stderr, "a breakpoint on __raise_exception().\n");
- }
- }
-}
-
-/* Cover routine to allow wrapping target_enable_exception_catchpoints
- inside a catch_errors */
-
-static int
-cover_target_enable_exception_callback (arg)
- PTR arg;
-{
- args_for_catchpoint_enable *args = arg;
- struct symtab_and_line *sal;
- sal = target_enable_exception_callback (args->kind, args->enable);
- if (sal == NULL)
- return 0;
- else if (sal == (struct symtab_and_line *) -1)
- return -1;
- else
- return 1; /*is valid*/
-}
-
-
-
-/* This is the original v.4.16 and earlier version of the
- catch_command_1() function. Now that other flavours of "catch"
- have been introduced, and since exception handling can be handled
- in other ways (through target ops) also, this is used only for the
- GNU C++ exception handling system.
- Note: Only the "catch" flavour of GDB 4.16 is handled here. The
- "catch NAME" is now no longer allowed in catch_command_1(). Also,
- there was no code in GDB 4.16 for "catch throw".
-
- Called from catch_exception_command_1 () */
-
-
-static void
-handle_gnu_4_16_catch_command (arg, tempflag, from_tty)
- char *arg;
- int tempflag;
- int from_tty;
-{
- /* 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);
-
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->type = bp_breakpoint; /* Important -- this is an ordinary breakpoint.
- For platforms with callback support for exceptions,
- create_exception_catchpoint() will create special
- bp types (bp_catch_catch and bp_catch_throw), and
- there is code in insert_breakpoints() and elsewhere
- that depends on that. */
-
- b->cond = cond;
- b->enable = enabled;
- b->disposition = tempflag ? del : donttouch;
-
- mention (b);
- }
-
- if (sals.nelts > 1)
- {
- printf_unfiltered ("Multiple breakpoints were set.\n");
- printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n");
- }
- free ((PTR)sals.sals);
-}
-
-#if 0
-/* This creates a temporary internal breakpoint
- just to placate infrun */
-static struct breakpoint *
-create_temp_exception_breakpoint (pc)
- CORE_ADDR pc;
-{
- struct symtab_and_line sal;
- struct breakpoint *b;
-
- INIT_SAL(&sal);
- sal.pc = pc;
- sal.symtab = NULL;
- sal.line = 0;
-
- b = set_raw_breakpoint (sal);
- if (!b)
- error ("Internal error -- couldn't set temp exception breakpoint");
-
- b->type = bp_breakpoint;
- b->disposition = del;
- b->enable = enabled;
- b->silent = 1;
- b->number = internal_breakpoint_number--;
- return b;
-}
-#endif
-
-static void
-catch_command_1 (arg, tempflag, from_tty)
- char *arg;
- int tempflag;
- int from_tty;
-{
-
- /* The first argument may be an event name, such as "start" or "load".
- If so, then handle it as such. If it doesn't match an event name,
- then attempt to interpret it as an exception name. (This latter is
- the v4.16-and-earlier GDB meaning of the "catch" command.)
-
- First, try to find the bounds of what might be an event name. */
- char * arg1_start = arg;
- char * arg1_end;
- int arg1_length;
-
- if (arg1_start == NULL)
- {
- /* Old behaviour was to use pre-v-4.16 syntax */
- /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
- /* return; */
- /* Now, this is not allowed */
- error ("Catch requires an event name.");
-
- }
- arg1_end = ep_find_event_name_end (arg1_start);
- if (arg1_end == NULL)
- error ("catch requires an event");
- arg1_length = arg1_end + 1 - arg1_start;
-
- /* Try to match what we found against known event names. */
- if (strncmp (arg1_start, "signal", arg1_length) == 0)
- {
- error ("Catch of signal not yet implemented");
- }
- else if (strncmp (arg1_start, "catch", arg1_length) == 0)
- {
- catch_exception_command_1 (EX_EVENT_CATCH, arg1_end+1, tempflag, from_tty);
- }
- else if (strncmp (arg1_start, "throw", arg1_length) == 0)
- {
- catch_exception_command_1 (EX_EVENT_THROW, arg1_end+1, tempflag, from_tty);
- }
- else if (strncmp (arg1_start, "thread_start", arg1_length) == 0)
- {
- error ("Catch of thread_start not yet implemented");
- }
- else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0)
- {
- error ("Catch of thread_exit not yet implemented");
- }
- else if (strncmp (arg1_start, "thread_join", arg1_length) == 0)
- {
- error ("Catch of thread_join not yet implemented");
- }
- else if (strncmp (arg1_start, "start", arg1_length) == 0)
- {
- error ("Catch of start not yet implemented");
- }
- else if (strncmp (arg1_start, "exit", arg1_length) == 0)
- {
- error ("Catch of exit not yet implemented");
- }
- else if (strncmp (arg1_start, "fork", arg1_length) == 0)
- {
-#if defined(CHILD_INSERT_FORK_CATCHPOINT)
- catch_fork_command_1 (catch_fork, arg1_end+1, tempflag, from_tty);
-#else
- error ("Catch of fork not yet implemented");
-#endif
- }
- else if (strncmp (arg1_start, "vfork", arg1_length) == 0)
- {
-#if defined(CHILD_INSERT_VFORK_CATCHPOINT)
- catch_fork_command_1 (catch_vfork, arg1_end+1, tempflag, from_tty);
-#else
- error ("Catch of vfork not yet implemented");
-#endif
- }
- else if (strncmp (arg1_start, "exec", arg1_length) == 0)
- {
-#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
- catch_exec_command_1 (arg1_end+1, tempflag, from_tty);
-#else
- error ("Catch of exec not yet implemented");
-#endif
- }
- else if (strncmp (arg1_start, "load", arg1_length) == 0)
- {
-#if defined(SOLIB_ADD)
- catch_load_command_1 (arg1_end+1, tempflag, from_tty);
-#else
- error ("Catch of load not implemented");
-#endif
- }
- else if (strncmp (arg1_start, "unload", arg1_length) == 0)
- {
-#if defined(SOLIB_ADD)
- catch_unload_command_1 (arg1_end+1, tempflag, from_tty);
-#else
- error ("Catch of load not implemented");
-#endif
- }
- else if (strncmp (arg1_start, "stop", arg1_length) == 0)
- {
- 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 (sal)
- struct symtab_and_line sal;
-{
- struct breakpoint *b;
- b = set_raw_breakpoint (sal);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
- b->type = bp_breakpoint;
- b->cond = 0;
- b->thread = -1;
- return b;
-}
-
-#if 0
-/* These aren't used; I don't know what they were for. */
-/* Disable breakpoints on all catch clauses described in ARGS. */
-static void
-disable_catch (args)
- char *args;
-{
- /* Map the disable command to catch clauses described in ARGS. */
-}
-
-/* Enable breakpoints on all catch clauses described in ARGS. */
-static void
-enable_catch (args)
- char *args;
-{
- /* Map the disable command to catch clauses described in ARGS. */
-}
-
-/* Delete breakpoints on all catch clauses in the active scope. */
-static void
-delete_catch (args)
- char *args;
-{
- /* Map the delete command to catch clauses described in ARGS. */
-}
-#endif /* 0 */
-
-static void
-catch_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- catch_command_1 (arg, 0, from_tty);
-}
-
-
-static void
-tcatch_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- catch_command_1 (arg, 1, from_tty);
-}
-
-
-static void
-clear_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- register struct breakpoint *b, *b1;
- int default_match;
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- register struct breakpoint *found;
- 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));
- 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. We do this in two loops: the first loop looks at
- the initial bp(s) in the chain which should be deleted,
- the second goes down the rest of the chain looking ahead
- one so it can take those bps off the chain without messing
- up the chain. */
-
-
- for (i = 0; i < sals.nelts; i++)
- {
- /* If exact pc given, clear bpts at that pc.
- If line given (pc == 0), clear all bpts on specified line.
- If defaulting, clear all bpts on default line
- or at default pc.
-
- defaulting sal.pc != 0 tests to do
-
- 0 1 pc
- 1 1 pc _and_ line
- 0 0 line
- 1 0 <can't happen> */
-
- sal = sals.sals[i];
- found = (struct breakpoint *) 0;
-
-
- while (breakpoint_chain
- /* Why don't we check here that this is not
- a watchpoint, etc., as we do below?
- I can't make it fail, but don't know
- what's stopping the failure: a watchpoint
- of the same address as "sal.pc" should
- wind up being deleted. */
-
- && ( ((sal.pc && (breakpoint_chain->address == sal.pc)) &&
- (overlay_debugging == 0 ||
- breakpoint_chain->section == sal.section))
- || ((default_match || (0 == sal.pc))
- && breakpoint_chain->source_file != NULL
- && sal.symtab != NULL
- && STREQ (breakpoint_chain->source_file, sal.symtab->filename)
- && breakpoint_chain->line_number == sal.line)))
-
- {
- b1 = breakpoint_chain;
- breakpoint_chain = b1->next;
- b1->next = found;
- found = b1;
- }
-
- ALL_BREAKPOINTS (b)
-
- while (b->next
- && b->next->type != bp_none
- && b->next->type != bp_watchpoint
- && b->next->type != bp_hardware_watchpoint
- && b->next->type != bp_read_watchpoint
- && b->next->type != bp_access_watchpoint
- && ( ((sal.pc && (b->next->address == sal.pc)) &&
- (overlay_debugging == 0 ||
- b->next->section == sal.section))
- || ((default_match || (0 == sal.pc))
- && b->next->source_file != NULL
- && sal.symtab != NULL
- && STREQ (b->next->source_file, sal.symtab->filename)
- && b->next->line_number == sal.line)))
-
-
- {
- b1 = b->next;
- b->next = b1->next;
- b1->next = found;
- found = b1;
- }
-
- 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);
- b1 = found->next;
- delete_breakpoint (found);
- found = b1;
- }
- if (from_tty) putchar_unfiltered ('\n');
- }
- free ((PTR)sals.sals);
-}
-
-/* Delete breakpoint in BS if they are `delete' breakpoints and
- all breakpoints that are marked for deletion, whether hit or not.
- This is called after any breakpoint is hit, or after errors. */
-
-void
-breakpoint_auto_delete (bs)
- bpstat bs;
-{
- struct breakpoint *b, *temp;
-
- for (; bs; bs = bs->next)
- if (bs->breakpoint_at && bs->breakpoint_at->disposition == del
- && bs->stop)
- delete_breakpoint (bs->breakpoint_at);
-
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->disposition == del_at_next_stop)
- delete_breakpoint (b);
- }
-}
-
-/* Delete a breakpoint and clean up all traces of it in the data structures. */
-
-void
-delete_breakpoint (bpt)
- 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);
-
- if (bpt->inserted)
- remove_breakpoint (bpt, mark_uninserted);
-
- if (breakpoint_chain == bpt)
- breakpoint_chain = bpt->next;
-
- /* If we have callback-style exception catchpoints, don't go through
- the adjustments to the C++ runtime library etc. if the inferior
- isn't actually running. target_enable_exception_callback for a
- null target ops vector gives an undesirable error message, so we
- check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
- exceptions are supported in this way, it's OK for now. FIXME */
- if (ep_is_exception_catchpoint (bpt) && target_has_execution)
- {
- static char message1[] = "Error in deleting catchpoint %d:\n";
- static char message[sizeof (message1) + 30];
- args_for_catchpoint_enable args;
-
- sprintf (message, message1, bpt->number); /* Format possible error msg */
- args.kind = bpt->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW;
- args.enable = 0;
- catch_errors (cover_target_enable_exception_callback, &args,
- message, RETURN_MASK_ALL);
- }
-
-
- ALL_BREAKPOINTS (b)
- if (b->next == bpt)
- {
- b->next = bpt->next;
- break;
- }
-
- /* Before turning off the visuals for the bp, check to see that
- there are no other bps at the same address. */
- if (tui_version)
- {
- int clearIt;
-
- ALL_BREAKPOINTS (b)
- {
- clearIt = (b->address != bpt->address);
- if (!clearIt)
- break;
- }
-
- if (clearIt)
- {
- TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, bpt, 0));
- TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos));
- }
- }
-
- check_duplicates (bpt->address, bpt->section);
- /* If this breakpoint was inserted, and there is another breakpoint
- at the same address, we need to insert the other breakpoint. */
- if (bpt->inserted
- && bpt->type != bp_hardware_watchpoint
- && bpt->type != bp_read_watchpoint
- && bpt->type != bp_access_watchpoint
- && bpt->type != bp_catch_fork
- && bpt->type != bp_catch_vfork
- && bpt->type != bp_catch_exec)
- {
- ALL_BREAKPOINTS (b)
- if (b->address == bpt->address
- && b->section == bpt->section
- && !b->duplicate
- && b->enable != disabled
- && b->enable != shlib_disabled
- && b->enable != call_disabled)
- {
- int val;
- val = target_insert_breakpoint (b->address, b->shadow_contents);
- if (val != 0)
- {
- target_terminal_ours_for_output ();
- fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number);
- memory_error (val, b->address); /* which bombs us out */
- }
- else
- b->inserted = 1;
- }
- }
-
- free_command_lines (&bpt->commands);
- if (bpt->cond)
- free (bpt->cond);
- if (bpt->cond_string != NULL)
- free (bpt->cond_string);
- if (bpt->addr_string != NULL)
- free (bpt->addr_string);
- if (bpt->exp != NULL)
- free (bpt->exp);
- if (bpt->exp_string != NULL)
- free (bpt->exp_string);
- if (bpt->val != NULL)
- value_free (bpt->val);
- if (bpt->source_file != NULL)
- free (bpt->source_file);
- if (bpt->dll_pathname != NULL)
- free (bpt->dll_pathname);
- if (bpt->triggered_dll_pathname != NULL)
- free (bpt->triggered_dll_pathname);
- if (bpt->exec_pathname != NULL)
- free (bpt->exec_pathname);
-
- /* Be sure no bpstat's are pointing at it after it's been freed. */
- /* FIXME, how can we find all bpstat's?
- We just check stop_bpstat for now. */
- for (bs = stop_bpstat; bs; bs = bs->next)
- if (bs->breakpoint_at == bpt)
- {
- bs->breakpoint_at = NULL;
-
- /* we'd call bpstat_clear_actions, but that free's stuff and due
- to the multiple pointers pointing to one item with no
- reference counts found anywhere through out the bpstat's (how
- do you spell fragile?), we don't want to free things twice --
- better a memory leak than a corrupt malloc pool! */
- bs->commands = NULL;
- bs->old_val = NULL;
- }
- /* On the chance that someone will soon try again to delete this same
- bp, we mark it as deleted before freeing its storage. */
- bpt->type = bp_none;
-
- free ((PTR)bpt);
-}
-
-void
-delete_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- struct breakpoint *b, *temp;
-
- if (arg == 0)
- {
- int breaks_to_delete = 0;
-
- /* Delete all breakpoints if no argument.
- Do not delete internal or call-dummy breakpoints, these
- have to be deleted with an explicit breakpoint number argument. */
- ALL_BREAKPOINTS (b)
- {
- if (b->type != bp_call_dummy &&
- b->type != bp_shlib_event &&
- b->number >= 0)
- breaks_to_delete = 1;
- }
-
- /* Ask user only if there are some breakpoints to delete. */
- if (!from_tty
- || (breaks_to_delete && query ("Delete all breakpoints? ")))
- {
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- if (b->type != bp_call_dummy &&
- b->type != bp_shlib_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 (bint)
- PTR bint;
-{
- struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */
- struct value *mark;
- int i;
- struct symtabs_and_lines sals;
- char *s;
- enum enable save_enable;
-
- switch (b->type)
- {
- case bp_none:
- warning ("attempted to reset apparently deleted breakpoint #%d?\n", b->number);
- return 0;
- case bp_breakpoint:
- case bp_hardware_breakpoint:
- case bp_catch_load:
- case bp_catch_unload:
- if (b->addr_string == NULL)
- {
- /* Anything without a string can't be re-set. */
- delete_breakpoint (b);
- return 0;
- }
- /* In case we have a problem, disable this breakpoint. We'll restore
- its status if we succeed. */
- save_enable = b->enable;
- b->enable = disabled;
-
- set_language (b->language);
- input_radix = b->input_radix;
- s = b->addr_string;
- sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL);
- 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)
- free ((PTR)b->cond);
- b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0);
- }
-
- /* We need to re-set the breakpoint if the address changes...*/
- 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)
- free (b->source_file);
- if (sals.sals[i].symtab == NULL)
- b->source_file = NULL;
- else
- b->source_file =
- savestring (sals.sals[i].symtab->filename,
- strlen (sals.sals[i].symtab->filename));
- b->line_number = sals.sals[i].line;
- b->address = sals.sals[i].pc;
-
- /* Used to check for duplicates here, but that can
- cause trouble, as it doesn't check for disable
- breakpoints. */
-
- mention (b);
-
- /* Might be better to do this just once per breakpoint_re_set,
- rather than once for every breakpoint. */
- breakpoints_changed ();
- }
- b->section = sals.sals[i].section;
- b->enable = save_enable; /* Restore it, this worked. */
-
-
- /* Now that this is re-enabled, check_duplicates
- can be used. */
- check_duplicates (b->address, b->section);
-
- }
- free ((PTR)sals.sals);
- break;
-
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
- innermost_block = NULL;
- /* The issue arises of what context to evaluate this in. The same
- one as when it was set, but what does that mean when symbols have
- been re-read? We could save the filename and functionname, but
- if the context is more local than that, the best we could do would
- be something like how many levels deep and which index at that
- particular level, but that's going to be less stable than filenames
- or functionnames. */
- /* So for now, just use a global context. */
- if (b->exp)
- free ((PTR)b->exp);
- b->exp = parse_expression (b->exp_string);
- b->exp_valid_block = innermost_block;
- mark = value_mark ();
- if (b->val)
- value_free (b->val);
- b->val = evaluate_expression (b->exp);
- release_value (b->val);
- if (VALUE_LAZY (b->val))
- value_fetch_lazy (b->val);
-
- if (b->cond_string != NULL)
- {
- s = b->cond_string;
- if (b->cond)
- free ((PTR)b->cond);
- b->cond = parse_exp_1 (&s, (struct block *)0, 0);
- }
- if (b->enable == enabled)
- mention (b);
- value_free_to_mark (mark);
- break;
- case bp_catch_catch:
- case bp_catch_throw:
- break;
- /* We needn't really do anything to reset these, since the mask
- that requests them is unaffected by e.g., new libraries being
- loaded. */
- case bp_catch_fork:
- case bp_catch_vfork:
- case bp_catch_exec:
- break;
-
- default:
- printf_filtered ("Deleting unknown breakpoint type %d\n", b->type);
- /* fall through */
- /* Delete longjmp breakpoints, they will be reset later by
- breakpoint_re_set. */
- case bp_longjmp:
- case bp_longjmp_resume:
- delete_breakpoint (b);
- break;
-
- /* This breakpoint is special, it's set up when the inferior
- starts and we really don't want to touch it. */
- case bp_shlib_event:
-
- /* Keep temporary breakpoints, which can be encountered when we step
- over a dlopen call and SOLIB_ADD is resetting the breakpoints.
- Otherwise these should have been blown away via the cleanup chain
- or by breakpoint_init_inferior when we rerun the executable. */
- case bp_until:
- case bp_finish:
- case bp_watchpoint_scope:
- case bp_call_dummy:
- case bp_step_resume:
- break;
- }
-
- return 0;
-}
-
-/* Re-set all breakpoints after symbols have been re-loaded. */
-void
-breakpoint_re_set ()
-{
- struct breakpoint *b, *temp;
- enum language save_language;
- int save_input_radix;
- static char message1[] = "Error in re-setting breakpoint %d:\n";
- char message[sizeof (message1) + 30 /* slop */];
-
- save_language = current_language->la_language;
- save_input_radix = input_radix;
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- sprintf (message, message1, b->number); /* Format possible error msg */
- catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL);
- }
- set_language (save_language);
- input_radix = save_input_radix;
-
-#ifdef GET_LONGJMP_TARGET
- create_longjmp_breakpoint ("longjmp");
- create_longjmp_breakpoint ("_longjmp");
- create_longjmp_breakpoint ("siglongjmp");
- create_longjmp_breakpoint ("_siglongjmp");
- create_longjmp_breakpoint (NULL);
-#endif
-
-#if 0
- /* Took this out (temporarily at least), since it produces an extra
- blank line at startup. This messes up the gdbtests. -PB */
- /* Blank line to finish off all those mention() messages we just printed. */
- printf_filtered ("\n");
-#endif
-}
-
-/* Set ignore-count of breakpoint number BPTNUM to COUNT.
- If from_tty is nonzero, it prints a message to that effect,
- which ends with a period (no newline). */
-
-/* Reset the thread number of this breakpoint:
-
- - If the breakpoint is for all threads, leave it as-is.
- - Else, reset it to the current thread for inferior_pid. */
-void
-breakpoint_re_set_thread (b)
- struct breakpoint * b;
-{
- if (b->thread != -1)
- {
- if (in_thread_list (inferior_pid))
- b->thread = pid_to_thread_id (inferior_pid);
- }
-}
-
-void
-set_ignore_count (bptnum, count, from_tty)
- int bptnum, count, from_tty;
-{
- register struct breakpoint *b;
-
- if (count < 0)
- count = 0;
-
- ALL_BREAKPOINTS (b)
- if (b->number == bptnum)
- {
- b->ignore_count = count;
- if (!from_tty)
- return;
- else if (count == 0)
- printf_filtered ("Will stop next time breakpoint %d is reached.",
- bptnum);
- else if (count == 1)
- printf_filtered ("Will ignore next crossing of breakpoint %d.",
- bptnum);
- else
- printf_filtered ("Will ignore next %d crossings of breakpoint %d.",
- count, bptnum);
- breakpoints_changed ();
- return;
- }
-
- error ("No breakpoint number %d.", bptnum);
-}
-
-/* Clear the ignore counts of all breakpoints. */
-void
-breakpoint_clear_ignore_counts ()
-{
- struct breakpoint *b;
-
- ALL_BREAKPOINTS (b)
- b->ignore_count = 0;
-}
-
-/* Command to set ignore-count of breakpoint N to COUNT. */
-
-static void
-ignore_command (args, from_tty)
- 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 (*p == 0)
- error ("Second argument (specified ignore-count) is missing.");
-
- set_ignore_count (num,
- longest_to_int (value_as_long (parse_and_eval (p))),
- from_tty);
- printf_filtered ("\n");
- breakpoints_changed ();
-}
-
-/* Call FUNCTION on each of the breakpoints
- whose numbers are given in ARGS. */
-
-static void
-map_breakpoint_numbers (args, function)
- char *args;
- void (*function) PARAMS ((struct breakpoint *));
-{
- register char *p = args;
- char *p1;
- register int num;
- register struct breakpoint *b;
-
- if (p == 0)
- error_no_arg ("one or more breakpoint numbers");
-
- while (*p)
- {
- p1 = p;
-
- num = get_number (&p1);
-
- ALL_BREAKPOINTS (b)
- if (b->number == num)
- {
- struct breakpoint *related_breakpoint = b->related_breakpoint;
- function (b);
- if (related_breakpoint)
- function (related_breakpoint);
- goto win;
- }
- printf_unfiltered ("No breakpoint number %d.\n", num);
- win:
- p = p1;
- }
-}
-
-void
-disable_breakpoint (bpt)
- struct breakpoint *bpt;
-{
- /* Never disable a watchpoint scope breakpoint; we want to
- hit them when we leave scope so we can delete both the
- watchpoint and its scope breakpoint at that time. */
- if (bpt->type == bp_watchpoint_scope)
- return;
-
- bpt->enable = disabled;
-
- check_duplicates (bpt->address, bpt->section);
-
- if (modify_breakpoint_hook)
- modify_breakpoint_hook (bpt);
-}
-
-/* ARGSUSED */
-static void
-disable_command (args, from_tty)
- char *args;
- int from_tty;
-{
- register struct breakpoint *bpt;
- if (args == 0)
- ALL_BREAKPOINTS (bpt)
- switch (bpt->type)
- {
- case bp_none:
- warning ("attempted to disable apparently deleted breakpoint #%d?\n", bpt->number);
- continue;
- case bp_breakpoint:
- case bp_catch_load:
- case bp_catch_unload:
- case bp_catch_fork:
- case bp_catch_vfork:
- case bp_catch_exec:
- case bp_catch_catch:
- case bp_catch_throw:
- case bp_hardware_breakpoint:
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
- disable_breakpoint (bpt);
- default:
- continue;
- }
- else
- map_breakpoint_numbers (args, disable_breakpoint);
-}
-
-static void
-do_enable_breakpoint (bpt, disposition)
- struct breakpoint *bpt;
- enum bpdisp disposition;
-{
- 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.");
- }
-
- bpt->enable = enabled;
- bpt->disposition = disposition;
- check_duplicates (bpt->address, bpt->section);
- breakpoints_changed ();
-
- if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint ||
- bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint)
- {
- if (bpt->exp_valid_block != NULL)
- {
- struct frame_info *fr =
-
- /* Ensure that we have the current frame. Else, this
- next query may pessimistically be answered as, "No,
- not within current scope". */
- get_current_frame ();
- fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame);
- if (fr == NULL)
- {
- printf_filtered ("\
-Cannot enable watchpoint %d because the block in which its expression\n\
-is valid is not currently in scope.\n", bpt->number);
- bpt->enable = disabled;
- return;
- }
-
- save_selected_frame = selected_frame;
- save_selected_frame_level = selected_frame_level;
- select_frame (fr, -1);
- }
-
- value_free (bpt->val);
- mark = value_mark ();
- bpt->val = evaluate_expression (bpt->exp);
- release_value (bpt->val);
- if (VALUE_LAZY (bpt->val))
- value_fetch_lazy (bpt->val);
-
- if (bpt->type == bp_hardware_watchpoint ||
- bpt->type == bp_read_watchpoint ||
- bpt->type == bp_access_watchpoint)
- {
- int i = hw_watchpoint_used_count (bpt->type, &other_type_used);
- int mem_cnt = can_use_hardware_watchpoint (bpt->val);
-
- /* Hack around 'unused var' error for some targets here */
- (void) mem_cnt, i;
- target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT(
- bpt->type, i + mem_cnt, other_type_used);
- /* we can consider of type is bp_hardware_watchpoint, convert to
- bp_watchpoint in the following condition */
- if (target_resources_ok < 0)
- {
- printf_filtered("\
-Cannot enable watchpoint %d because target watch resources\n\
-have been allocated for other watchpoints.\n", bpt->number);
- bpt->enable = disabled;
- value_free_to_mark (mark);
- return;
- }
- }
-
- if (save_selected_frame_level >= 0)
- select_and_print_frame (save_selected_frame, save_selected_frame_level);
- value_free_to_mark (mark);
- }
- if (modify_breakpoint_hook)
- modify_breakpoint_hook (bpt);
-}
-
-void
-enable_breakpoint (bpt)
- 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 (args, from_tty)
- char *args;
- int from_tty;
-{
- register struct breakpoint *bpt;
- if (args == 0)
- ALL_BREAKPOINTS (bpt)
- switch (bpt->type)
- {
- case bp_none:
- warning ("attempted to enable apparently deleted breakpoint #%d?\n", bpt->number);
- continue;
- case bp_breakpoint:
- case bp_catch_load:
- case bp_catch_unload:
- case bp_catch_fork:
- case bp_catch_vfork:
- case bp_catch_exec:
- case bp_catch_catch:
- case bp_catch_throw:
- case bp_hardware_breakpoint:
- case bp_watchpoint:
- 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 (bpt)
- struct breakpoint *bpt;
-{
- do_enable_breakpoint (bpt, disable);
-}
-
-/* ARGSUSED */
-static void
-enable_once_command (args, from_tty)
- char *args;
- int from_tty;
-{
- map_breakpoint_numbers (args, enable_once_breakpoint);
-}
-
-static void
-enable_delete_breakpoint (bpt)
- struct breakpoint *bpt;
-{
- do_enable_breakpoint (bpt, del);
-}
-
-/* ARGSUSED */
-static void
-enable_delete_command (args, from_tty)
- 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 (string, funfirstline)
- 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 ()
-{
- 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. ");
-
- add_com ("tbreak", class_breakpoint, tbreak_command,
- "Set a temporary breakpoint. Args like \"break\" command.\n\
-Like \"break\" except the breakpoint is only temporary,\n\
-so it will be deleted when hit. Equivalent to \"break\" followed\n\
-by using \"enable delete\" on the breakpoint number.");
- add_com("txbreak", class_breakpoint, tbreak_at_finish_command,
- "Set temporary breakpoint at procedure exit. Either there should\n\
-be no argument or the argument must be a depth.\n");
-
- add_com ("hbreak", class_breakpoint, hbreak_command,
- "Set a hardware assisted breakpoint. Args like \"break\" command.\n\
-Like \"break\" except the breakpoint requires hardware support,\n\
-some target hardware may not have this support.");
-
- add_com ("thbreak", class_breakpoint, thbreak_command,
- "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
-Like \"hbreak\" except the breakpoint is only temporary,\n\
-so it will be deleted when hit.");
-
- add_prefix_cmd ("enable", class_breakpoint, enable_command,
- "Enable some breakpoints.\n\
-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));
-
- 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));
- add_com_alias ("b", "break", class_run, 1);
- add_com_alias ("br", "break", class_run, 1);
- add_com_alias ("bre", "break", class_run, 1);
- add_com_alias ("brea", "break", class_run, 1);
-
- add_com("xbreak", class_breakpoint, break_at_finish_command,
- concat("Set breakpoint at procedure exit. \n\
-Argument may be function name, or \"*\" and an address.\n\
-If function is specified, break at end of code for that function.\n\
-If an address is specified, break at the end of the function that contains \n\
-that exact address.\n",
-"With no arg, uses current execution address of selected stack frame.\n\
-This is useful for breaking on return to a stack frame.\n\
-\n\
-Multiple breakpoints at one place are permitted, and useful if conditional.\n\
-\n\
-Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL));
- add_com_alias ("xb", "xbreak", class_breakpoint, 1);
- add_com_alias ("xbr", "xbreak", class_breakpoint, 1);
- add_com_alias ("xbre", "xbreak", class_breakpoint, 1);
- add_com_alias ("xbrea", "xbreak", class_breakpoint, 1);
-
- if (xdb_commands)
- {
- add_com_alias ("ba", "break", class_breakpoint, 1);
- add_com_alias ("bu", "ubreak", class_breakpoint, 1);
- add_com ("bx", class_breakpoint, break_at_finish_at_depth_command,
- "Set breakpoint at procedure exit. Either there should\n\
-be no argument or the argument must be a depth.\n");
- }
-
- if (dbx_commands)
- {
- add_abbrev_prefix_cmd("stop", class_breakpoint, stop_command,
- "Break in function/address or break at a line in the current file.",
- &stoplist, "stop ", 1, &cmdlist);
- add_cmd("in", class_breakpoint, stopin_command,
- "Break in function or address.\n", &stoplist);
- add_cmd("at", class_breakpoint, stopat_command,
- "Break at a line in the current file.\n", &stoplist);
- add_com("status", class_info, breakpoints_info,
- concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint - normal breakpoint\n\
-\twatchpoint - watchpoint\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
-breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
-"Convenience variable \"$_\" and default examine address for \"x\"\n\
-are set to the address of the last breakpoint listed.\n\n\
-Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set.", NULL));
- }
-
- add_info ("breakpoints", breakpoints_info,
- concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint - normal breakpoint\n\
-\twatchpoint - watchpoint\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
-breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
-"Convenience variable \"$_\" 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 \"$bpnum\" contains the number of the last\n\
-breakpoint set.", NULL));
-
-#if MAINTENANCE_CMDS
-
- add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints,
- concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint - normal breakpoint\n\
-\twatchpoint - watchpoint\n\
-\tlongjmp - internal breakpoint used to step through longjmp()\n\
-\tlongjmp resume - internal breakpoint at the target of longjmp()\n\
-\tuntil - internal breakpoint used by the \"until\" command\n\
-\tfinish - internal breakpoint used by the \"finish\" command\n",
-"The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
-breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\n",
-"Convenience variable \"$_\" 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);
-
-#endif /* MAINTENANCE_CMDS */
-
- 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.");
-
-add_com ("watch", class_breakpoint, watch_command,
-
- "Set a watchpoint for an expression.\n\
-A watchpoint stops execution of your program whenever the value of\n\
-an expression changes.");
-
- add_com ("rwatch", class_breakpoint, rwatch_command,
- "Set a read watchpoint for an expression.\n\
-A watchpoint stops execution of your program whenever the value of\n\
-an expression is read.");
-
- add_com ("awatch", class_breakpoint, awatch_command,
- "Set a watchpoint for an expression.\n\
-A watchpoint stops execution of your program whenever the value of\n\
-an expression is either read or written.");
-
- add_info ("watchpoints", breakpoints_info,
- "Synonym for ``info breakpoints''.");
-
-
- c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger,
- (char *) &can_use_hw_watchpoints,
- "Set debugger's willingness to use watchpoint hardware.\n\
-If zero, gdb will not use hardware for new watchpoints, even if\n\
-such is available. (However, any hardware watchpoints that were\n\
-created before setting this to nonzero, will continue to use watchpoint\n\
-hardware.)",
- &setlist);
- add_show_from_set (c, &showlist);
-
- can_use_hw_watchpoints = 1;
-}