static void catch_command (char *, int);
-static void handle_gnu_4_16_catch_command (char *, int, int);
-
-static struct symtabs_and_lines get_catch_sals (int);
-
static void watch_command (char *, int);
static int can_use_hardware_watchpoint (struct value *);
}
#endif /* 0 */
-struct sal_chain
-{
- struct sal_chain *next;
- struct symtab_and_line sal;
-};
-
-#if 0
-/* Not really used -- invocation in handle_gnu_4_16_catch_command
- had been commented out in the v.4.16 sources, and stays
- disabled there now because "catch NAME" syntax isn't allowed.
- pai/1997-07-11 */
-/* This isn't used; I don't know what it was for. */
-/* For each catch clause identified in ARGS, run FUNCTION
- with that clause as an argument. */
-static struct symtabs_and_lines
-map_catch_names (char *args, int (*function) ())
-{
- register char *p = args;
- register char *p1;
- struct symtabs_and_lines sals;
-#if 0
- struct sal_chain *sal_chain = 0;
-#endif
-
- if (p == 0)
- error_no_arg ("one or more catch names");
-
- sals.nelts = 0;
- sals.sals = NULL;
-
- while (*p)
- {
- p1 = p;
- /* Don't swallow conditional part. */
- if (p1[0] == 'i' && p1[1] == 'f'
- && (p1[2] == ' ' || p1[2] == '\t'))
- break;
-
- if (isalpha (*p1))
- {
- p1++;
- while (isalnum (*p1) || *p1 == '_' || *p1 == '$')
- p1++;
- }
-
- if (*p1 && *p1 != ' ' && *p1 != '\t')
- error ("Arguments must be catch names.");
-
- *p1 = 0;
-#if 0
- if (function (p))
- {
- struct sal_chain *next = (struct sal_chain *)
- alloca (sizeof (struct sal_chain));
- next->next = sal_chain;
- next->sal = get_catch_sal (p);
- sal_chain = next;
- goto win;
- }
-#endif
- printf_unfiltered ("No catch clause for exception %s.\n", p);
-#if 0
- win:
-#endif
- p = p1;
- while (*p == ' ' || *p == '\t')
- p++;
- }
-}
-#endif
-
-/* This shares a lot of code with `print_frame_label_vars' from stack.c. */
-
-static struct symtabs_and_lines
-get_catch_sals (int this_level_only)
-{
- register struct blockvector *bl;
- register struct block *block;
- int index, have_default = 0;
- CORE_ADDR pc;
- struct symtabs_and_lines sals;
- struct sal_chain *sal_chain = 0;
- char *blocks_searched;
-
- /* Not sure whether an error message is always the correct response,
- but it's better than a core dump. */
- if (deprecated_selected_frame == NULL)
- error ("No selected frame.");
- block = get_frame_block (deprecated_selected_frame, 0);
- pc = get_frame_pc (deprecated_selected_frame);
-
- sals.nelts = 0;
- sals.sals = NULL;
-
- if (block == 0)
- error ("No symbol table info available.\n");
-
- bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
- blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
- memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
-
- while (block != 0)
- {
- CORE_ADDR end = BLOCK_END (block) - 4;
- int last_index;
-
- if (bl != blockvector_for_pc (end, &index))
- error ("blockvector blotch");
- if (BLOCKVECTOR_BLOCK (bl, index) != block)
- error ("blockvector botch");
- last_index = BLOCKVECTOR_NBLOCKS (bl);
- index += 1;
-
- /* Don't print out blocks that have gone by. */
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
- index++;
-
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
- {
- if (blocks_searched[index] == 0)
- {
- struct block *b = BLOCKVECTOR_BLOCK (bl, index);
- register int i;
- register struct symbol *sym;
-
- ALL_BLOCK_SYMBOLS (b, i, sym)
- {
- if (STREQ (DEPRECATED_SYMBOL_NAME (sym), "default"))
- {
- if (have_default)
- continue;
- have_default = 1;
- }
- if (SYMBOL_CLASS (sym) == LOC_LABEL)
- {
- struct sal_chain *next = (struct sal_chain *)
- alloca (sizeof (struct sal_chain));
- next->next = sal_chain;
- next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym),
- 0);
- sal_chain = next;
- }
- }
- blocks_searched[index] = 1;
- }
- index++;
- }
- if (have_default)
- break;
- if (sal_chain && this_level_only)
- break;
-
- /* After handling the function's top-level block, stop.
- Don't continue to its superblock, the block of
- per-file symbols. */
- if (BLOCK_FUNCTION (block))
- break;
- block = BLOCK_SUPERBLOCK (block);
- }
-
- if (sal_chain)
- {
- struct sal_chain *tmp_chain;
-
- /* Count the number of entries. */
- for (index = 0, tmp_chain = sal_chain; tmp_chain;
- tmp_chain = tmp_chain->next)
- index++;
-
- sals.nelts = index;
- sals.sals = (struct symtab_and_line *)
- xmalloc (index * sizeof (struct symtab_and_line));
- for (index = 0; sal_chain; sal_chain = sal_chain->next, index++)
- sals.sals[index] = sal_chain->sal;
- }
-
- return sals;
-}
-
static void
ep_skip_leading_whitespace (char **s)
{
else
return; /* something went wrong with setting up callbacks */
}
- else
- {
- /* No callbacks from runtime system for exceptions.
- Try GNU C++ exception breakpoints using labels in debug info. */
- if (ex_event == EX_EVENT_CATCH)
- {
- handle_gnu_4_16_catch_command (arg, tempflag, from_tty);
- }
- else if (ex_event == EX_EVENT_THROW)
- {
- /* Set a breakpoint on __raise_exception () */
- warning ("Unsupported with this platform/compiler combination.");
- warning ("Perhaps you can achieve the effect you want by setting");
- warning ("a breakpoint on __raise_exception().");
- }
- }
+ warning ("Unsupported with this platform/compiler combination.");
}
/* Cover routine to allow wrapping target_enable_exception_catchpoints
return 1; /*is valid */
}
-
-
-/* This is the original v.4.16 and earlier version of the
- catch_command_1() function. Now that other flavours of "catch"
- have been introduced, and since exception handling can be handled
- in other ways (through target ops) also, this is used only for the
- GNU C++ exception handling system.
- Note: Only the "catch" flavour of GDB 4.16 is handled here. The
- "catch NAME" is now no longer allowed in catch_command_1(). Also,
- there was no code in GDB 4.16 for "catch throw".
-
- Called from catch_exception_command_1 () */
-
-
-static void
-handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty)
-{
- /* First, translate ARG into something we can deal with in terms
- of breakpoints. */
-
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- register struct expression *cond = 0;
- register struct breakpoint *b;
- char *save_arg;
- int i;
-
- init_sal (&sal); /* initialize to zeroes */
-
- /* If no arg given, or if first arg is 'if ', all active catch clauses
- are breakpointed. */
-
- if (!arg || (arg[0] == 'i' && arg[1] == 'f'
- && (arg[2] == ' ' || arg[2] == '\t')))
- {
- /* Grab all active catch clauses. */
- sals = get_catch_sals (0);
- }
- else
- {
- /* Grab selected catch clauses. */
- error ("catch NAME not implemented");
-
-#if 0
- /* Not sure why this code has been disabled. I'm leaving
- it disabled. We can never come here now anyway
- since we don't allow the "catch NAME" syntax.
- pai/1997-07-11 */
-
- /* This isn't used; I don't know what it was for. */
- sals = map_catch_names (arg, catch_breakpoint);
-#endif
- }
-
- if (!sals.nelts)
- return;
-
- save_arg = arg;
- for (i = 0; i < sals.nelts; i++)
- {
- resolve_sal_pc (&sals.sals[i]);
-
- while (arg && *arg)
- {
- if (arg[0] == 'i' && arg[1] == 'f'
- && (arg[2] == ' ' || arg[2] == '\t'))
- cond = parse_exp_1 ((arg += 2, &arg),
- block_for_pc (sals.sals[i].pc), 0);
- else
- error ("Junk at end of arguments.");
- }
- arg = save_arg;
- }
-
- for (i = 0; i < sals.nelts; i++)
- {
- sal = sals.sals[i];
-
- if (from_tty)
- describe_other_breakpoints (sal.pc, sal.section);
-
- /* Important -- this is an ordinary breakpoint. For platforms
- with callback support for exceptions,
- create_exception_catchpoint() will create special bp types
- (bp_catch_catch and bp_catch_throw), and there is code in
- insert_breakpoints() and elsewhere that depends on that. */
- b = set_raw_breakpoint (sal, bp_breakpoint);
- set_breakpoint_count (breakpoint_count + 1);
- b->number = breakpoint_count;
-
- b->cond = cond;
- b->enable_state = bp_enabled;
- b->disposition = tempflag ? disp_del : disp_donttouch;
-
- mention (b);
- }
-
- if (sals.nelts > 1)
- {
- warning ("Multiple breakpoints were set.");
- warning ("Use the \"delete\" command to delete unwanted breakpoints.");
- }
- xfree (sals.sals);
-}
-
static void
catch_command_1 (char *arg, int tempflag, int from_tty)
{
projects / binutils-gdb.git / commitdiff