X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fbreakpoint.c;h=49315e80dcdab3c58be28aaaf8467d19e2be4544;hb=5adc7e6d3b5f99b2cbf3baad727f3e3689c3ab8f;hp=ef9dfb8bc1bcd6db498bf87e3539bb5ffca66e22;hpb=c5aa993b1f4add48fbdc6cc3117059f616e49875;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c index ef9dfb8bc1..49315e80dc 100644 --- a/gdb/breakpoint.c +++ b/gdb/breakpoint.c @@ -1,6 +1,6 @@ /* Everything about breakpoints, for GDB. - Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 - Free Software Foundation, Inc. + Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999, + 2000, 2001 Free Software Foundation, Inc. This file is part of GDB. @@ -39,108 +39,86 @@ #include "annotate.h" #include "symfile.h" #include "objfiles.h" +#include "linespec.h" +#ifdef UI_OUT +#include "ui-out.h" +#endif + +#include "gdb-events.h" /* Prototypes for local functions. */ -static void -catch_command_1 PARAMS ((char *, int, int)); +static void until_break_command_continuation (struct continuation_arg *arg); -static void -enable_delete_command PARAMS ((char *, int)); +static void catch_command_1 (char *, int, int); -static void -enable_delete_breakpoint PARAMS ((struct breakpoint *)); +static void enable_delete_command (char *, int); -static void -enable_once_command PARAMS ((char *, int)); +static void enable_delete_breakpoint (struct breakpoint *); -static void -enable_once_breakpoint PARAMS ((struct breakpoint *)); +static void enable_once_command (char *, int); -static void -disable_command PARAMS ((char *, int)); +static void enable_once_breakpoint (struct breakpoint *); -static void -enable_command PARAMS ((char *, int)); +static void disable_command (char *, int); -static void -map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); +static void enable_command (char *, int); -static void -ignore_command PARAMS ((char *, int)); +static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); -static int breakpoint_re_set_one PARAMS ((PTR)); +static void ignore_command (char *, int); -static void -clear_command PARAMS ((char *, int)); +static int breakpoint_re_set_one (PTR); -static void -catch_command PARAMS ((char *, int)); +static void clear_command (char *, int); -static void -handle_gnu_4_16_catch_command PARAMS ((char *, int, int)); +static void catch_command (char *, int); -static struct symtabs_and_lines -get_catch_sals PARAMS ((int)); +static void handle_gnu_4_16_catch_command (char *, int, int); -static void -watch_command PARAMS ((char *, int)); +static struct symtabs_and_lines get_catch_sals (int); -static int -can_use_hardware_watchpoint PARAMS ((struct value *)); +static void watch_command (char *, int); -static void break_at_finish_command PARAMS ((char *, int)); -static void break_at_finish_at_depth_command PARAMS ((char *, int)); +static int can_use_hardware_watchpoint (struct value *); -void -tbreak_command PARAMS ((char *, int)); +static void break_at_finish_command (char *, int); +static void break_at_finish_at_depth_command (char *, int); -static void tbreak_at_finish_command PARAMS ((char *, int)); +void tbreak_command (char *, int); -static void -break_command_1 PARAMS ((char *, int, int)); +static void tbreak_at_finish_command (char *, int); -static void -mention PARAMS ((struct breakpoint *)); +static void break_command_1 (char *, int, int); -struct breakpoint * - set_raw_breakpoint PARAMS ((struct symtab_and_line)); +static void mention (struct breakpoint *); -static void -check_duplicates PARAMS ((CORE_ADDR, asection *)); +struct breakpoint *set_raw_breakpoint (struct symtab_and_line); -static void -describe_other_breakpoints PARAMS ((CORE_ADDR, asection *)); +static void check_duplicates (CORE_ADDR, asection *); -static void -breakpoints_info PARAMS ((char *, int)); +static void describe_other_breakpoints (CORE_ADDR, asection *); -static void -breakpoint_1 PARAMS ((int, int)); +static void breakpoints_info (char *, int); -static bpstat - bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); +static void breakpoint_1 (int, int); -static int breakpoint_cond_eval PARAMS ((PTR)); +static bpstat bpstat_alloc (struct breakpoint *, bpstat); -static void -cleanup_executing_breakpoints PARAMS ((PTR)); +static int breakpoint_cond_eval (PTR); -static void -commands_command PARAMS ((char *, int)); +static void cleanup_executing_breakpoints (PTR); -static void -condition_command PARAMS ((char *, int)); +static void commands_command (char *, int); -static int -get_number PARAMS ((char **)); +static void condition_command (char *, int); -void -set_breakpoint_count PARAMS ((int)); +static int get_number_trailer (char **, int); + +void set_breakpoint_count (int); #if 0 -static struct breakpoint * - create_temp_exception_breakpoint PARAMS ((CORE_ADDR)); +static struct breakpoint *create_temp_exception_breakpoint (CORE_ADDR); #endif typedef enum @@ -150,10 +128,11 @@ typedef enum } insertion_state_t; -static int -remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t)); +static int remove_breakpoint (struct breakpoint *, insertion_state_t); -static int print_it_normal PARAMS ((bpstat)); +static enum print_stop_action print_it_typical (bpstat); + +static enum print_stop_action print_bp_stop_message (bpstat bs); typedef struct { @@ -162,89 +141,90 @@ typedef struct } args_for_catchpoint_enable; -static int watchpoint_check PARAMS ((PTR)); - -static int cover_target_enable_exception_callback PARAMS ((PTR)); +static int watchpoint_check (PTR); -static int print_it_done PARAMS ((bpstat)); +static int cover_target_enable_exception_callback (PTR); -static int print_it_noop PARAMS ((bpstat)); - -static void maintenance_info_breakpoints PARAMS ((char *, int)); +static void maintenance_info_breakpoints (char *, int); #ifdef GET_LONGJMP_TARGET -static void create_longjmp_breakpoint PARAMS ((char *)); +static void create_longjmp_breakpoint (char *); #endif -static int hw_breakpoint_used_count PARAMS ((void)); +static int hw_breakpoint_used_count (void); -static int hw_watchpoint_used_count PARAMS ((enum bptype, int *)); +static int hw_watchpoint_used_count (enum bptype, int *); -static void hbreak_command PARAMS ((char *, int)); +static void hbreak_command (char *, int); -static void thbreak_command PARAMS ((char *, int)); +static void thbreak_command (char *, int); -static void watch_command_1 PARAMS ((char *, int, int)); +static void watch_command_1 (char *, int, int); -static void rwatch_command PARAMS ((char *, int)); +static void rwatch_command (char *, int); -static void awatch_command PARAMS ((char *, int)); +static void awatch_command (char *, int); -static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); +static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); -static void create_solib_load_unload_event_breakpoint PARAMS ((char *hookname, int tempflag, char *dll_pathname, char *cond_string, enum bptype bp_kind)); +static void solib_load_unload_1 (char *hookname, + int tempflag, + char *dll_pathname, + char *cond_string, enum bptype bp_kind); -static void create_fork_vfork_event_catchpoint PARAMS ((int tempflag, char *cond_string, enum bptype bp_kind)); +static void create_fork_vfork_event_catchpoint (int tempflag, + char *cond_string, + enum bptype bp_kind); -static void break_at_finish_at_depth_command_1 PARAMS ((char *arg, int flag, int from_tty)); +static void break_at_finish_at_depth_command_1 (char *arg, + int flag, int from_tty); -static void break_at_finish_command_1 PARAMS ((char *arg, int flag, int from_tty)); +static void break_at_finish_command_1 (char *arg, int flag, int from_tty); -static void stop_command PARAMS ((char *arg, int from_tty)); +static void stop_command (char *arg, int from_tty); -static void stopin_command PARAMS ((char *arg, int from_tty)); +static void stopin_command (char *arg, int from_tty); -static void stopat_command PARAMS ((char *arg, int from_tty)); +static void stopat_command (char *arg, int from_tty); -static char *ep_find_event_name_end PARAMS ((char *arg)); +static char *ep_find_event_name_end (char *arg); -static char *ep_parse_optional_if_clause PARAMS ((char **arg)); +static char *ep_parse_optional_if_clause (char **arg); -static char *ep_parse_optional_filename PARAMS ((char **arg)); +static char *ep_parse_optional_filename (char **arg); -static void catch_exec_command_1 PARAMS ((char *arg, int tempflag, int from_tty)); +#if defined(CHILD_INSERT_EXEC_CATCHPOINT) +static void catch_exec_command_1 (char *arg, int tempflag, int from_tty); +#endif -static void create_exception_catchpoint PARAMS ((int tempflag, char *cond_string, enum exception_event_kind ex_event, struct symtab_and_line * sal)); +static void create_exception_catchpoint (int tempflag, char *cond_string, + enum exception_event_kind ex_event, + struct symtab_and_line *sal); -static void catch_exception_command_1 PARAMS ((enum exception_event_kind ex_event, char *arg, int tempflag, int from_tty)); +static void catch_exception_command_1 (enum exception_event_kind ex_event, + char *arg, int tempflag, int from_tty); -static void tcatch_command PARAMS ((char *arg, int from_tty)); +static void tcatch_command (char *arg, int from_tty); -static void ep_skip_leading_whitespace PARAMS ((char **s)); +static void ep_skip_leading_whitespace (char **s); /* Prototypes for exported functions. */ -static void -awatch_command PARAMS ((char *, int)); +static void awatch_command (char *, int); -static void -do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); +static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); /* If FALSE, gdb will not use hardware support for watchpoints, even if such is available. */ static int can_use_hw_watchpoints; -void delete_command PARAMS ((char *, int)); - -void _initialize_breakpoint PARAMS ((void)); +void _initialize_breakpoint (void); -void set_breakpoint_count PARAMS ((int)); +void set_breakpoint_count (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; @@ -253,12 +233,12 @@ static int executing_breakpoint_commands; ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current breakpoint. */ -#define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) +#define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) -#define ALL_BREAKPOINTS_SAFE(b,tmp) \ - for (b = breakpoint_chain; \ - b? (tmp=b->next, 1): 0; \ - b = tmp) +#define ALL_BREAKPOINTS_SAFE(B,TMP) \ + for (B = breakpoint_chain; \ + B ? (TMP=B->next, 1): 0; \ + B = TMP) /* True if SHIFT_INST_REGS defined, false otherwise. */ @@ -349,8 +329,7 @@ int exception_support_initialized = 0; /* Set breakpoint count to NUM. */ void -set_breakpoint_count (num) - int num; +set_breakpoint_count (int num) { breakpoint_count = num; set_internalvar (lookup_internalvar ("bpnum"), @@ -360,7 +339,7 @@ set_breakpoint_count (num) /* Used in run_command to zero the hit count when a new run starts. */ void -clear_breakpoint_hit_counts () +clear_breakpoint_hit_counts (void) { struct breakpoint *b; @@ -385,12 +364,14 @@ int default_breakpoint_line; Currently the string can either be a number or "$" followed by the name of a convenience variable. Making it an expression wouldn't work well - for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ + for map_breakpoint_numbers (e.g. "4 + 5 + 6"). + + TRAILER is a character which can be found after the number; most + commonly this is `-'. If you don't want a trailer, use \0. */ static int -get_number (pp) - char **pp; +get_number_trailer (char **pp, int trailer) { - int retval; + int retval = 0; /* default */ char *p = *pp; if (p == NULL) @@ -410,11 +391,13 @@ get_number (pp) strncpy (varname, start, p - start); varname[p - start] = '\0'; val = value_of_internalvar (lookup_internalvar (varname)); - if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) - error ( - "Convenience variables used to specify breakpoints must have integer values." - ); - retval = (int) value_as_long (val); + if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) + retval = (int) value_as_long (val); + else + { + printf_filtered ("Convenience variable must have integer value.\n"); + retval = 0; + } } else { @@ -424,23 +407,119 @@ get_number (pp) ++p; if (p == *pp) /* There is no number here. (e.g. "cond a == b"). */ - error_no_arg ("breakpoint number"); - retval = atoi (*pp); + { + /* Skip non-numeric token */ + while (*p && !isspace((int) *p)) + ++p; + /* Return zero, which caller must interpret as error. */ + retval = 0; + } + else + retval = atoi (*pp); + } + if (!(isspace (*p) || *p == '\0' || *p == trailer)) + { + /* Trailing junk: return 0 and let caller print error msg. */ + while (!(isspace (*p) || *p == '\0' || *p == trailer)) + ++p; + retval = 0; } - if (!(isspace (*p) || *p == '\0')) - error ("breakpoint number expected"); while (isspace (*p)) p++; *pp = p; return retval; } + + +/* Like get_number_trailer, but don't allow a trailer. */ +int +get_number (char **pp) +{ + return get_number_trailer (pp, '\0'); +} + +/* Parse a number or a range. + * A number will be of the form handled by get_number. + * A range will be of the form - , and + * will represent all the integers between number1 and number2, + * inclusive. + * + * While processing a range, this fuction is called iteratively; + * At each call it will return the next value in the range. + * + * At the beginning of parsing a range, the char pointer PP will + * be advanced past and left pointing at the '-' token. + * Subsequent calls will not advance the pointer until the range + * is completed. The call that completes the range will advance + * pointer PP past . + */ + +int +get_number_or_range (char **pp) +{ + static int last_retval, end_value; + static char *end_ptr; + static int in_range = 0; + + if (**pp != '-') + { + /* Default case: pp is pointing either to a solo number, + or to the first number of a range. */ + last_retval = get_number_trailer (pp, '-'); + if (**pp == '-') + { + char **temp; + + /* This is the start of a range ( - ). + Skip the '-', parse and remember the second number, + and also remember the end of the final token. */ + + temp = &end_ptr; + end_ptr = *pp + 1; + while (isspace ((int) *end_ptr)) + end_ptr++; /* skip white space */ + end_value = get_number (temp); + if (end_value < last_retval) + { + error ("inverted range"); + } + else if (end_value == last_retval) + { + /* degenerate range (number1 == number2). Advance the + token pointer so that the range will be treated as a + single number. */ + *pp = end_ptr; + } + else + in_range = 1; + } + } + else if (! in_range) + error ("negative value"); + else + { + /* pp points to the '-' that betokens a range. All + number-parsing has already been done. Return the next + integer value (one greater than the saved previous value). + Do not advance the token pointer 'pp' until the end of range + is reached. */ + + if (++last_retval == end_value) + { + /* End of range reached; advance token pointer. */ + *pp = end_ptr; + in_range = 0; + } + } + return last_retval; +} + + /* condition N EXP -- set break condition of breakpoint N to EXP. */ static void -condition_command (arg, from_tty) - char *arg; - int from_tty; +condition_command (char *arg, int from_tty) { register struct breakpoint *b; char *p; @@ -451,17 +530,19 @@ condition_command (arg, from_tty) p = arg; bnum = get_number (&p); + if (bnum == 0) + error ("Bad breakpoint argument: '%s'", arg); ALL_BREAKPOINTS (b) if (b->number == bnum) { if (b->cond) { - free ((PTR) b->cond); + xfree (b->cond); b->cond = 0; } if (b->cond_string != NULL) - free ((PTR) b->cond_string); + xfree (b->cond_string); if (*p == 0) { @@ -489,9 +570,7 @@ condition_command (arg, from_tty) /* ARGSUSED */ static void -commands_command (arg, from_tty) - char *arg; - int from_tty; +commands_command (char *arg, int from_tty) { register struct breakpoint *b; char *p; @@ -507,6 +586,7 @@ commands_command (arg, from_tty) p = arg; bnum = get_number (&p); + if (p && *p) error ("Unexpected extra arguments following breakpoint number."); @@ -514,7 +594,9 @@ commands_command (arg, from_tty) if (b->number == bnum) { char tmpbuf[128]; - sprintf (tmpbuf, "Type commands for when breakpoint %d is hit, one per line.", bnum); + 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; @@ -533,10 +615,7 @@ commands_command (arg, from_tty) shadow contents, not the breakpoints themselves. From breakpoint.c. */ int -read_memory_nobpt (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - unsigned len; +read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) { int status; struct breakpoint *b; @@ -550,7 +629,8 @@ read_memory_nobpt (memaddr, myaddr, len) ALL_BREAKPOINTS (b) { if (b->type == bp_none) - warning ("attempted to read through apparently deleted breakpoint #%d?\n", b->number); + warning ("reading through apparently deleted breakpoint #%d?", + b->number); /* memory breakpoint? */ if (b->type == bp_watchpoint @@ -616,10 +696,9 @@ read_memory_nobpt (memaddr, myaddr, len) 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)); + 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; } @@ -637,9 +716,10 @@ read_memory_nobpt (memaddr, myaddr, len) or an `errno' value if could not write the inferior. */ int -insert_breakpoints () +insert_breakpoints (void) { register struct breakpoint *b, *temp; + int return_val = 0; /* return success code. */ int val = 0; int disabled_breaks = 0; @@ -649,7 +729,10 @@ insert_breakpoints () ALL_BREAKPOINTS_SAFE (b, temp) { - if (b->type != bp_watchpoint + if (b->enable == permanent) + /* Permanent breakpoints cannot be inserted or removed. */ + continue; + else if (b->type != bp_watchpoint && b->type != bp_hardware_watchpoint && b->type != bp_read_watchpoint && b->type != bp_access_watchpoint @@ -703,27 +786,28 @@ insert_breakpoints () 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"); + warning ("Cannot insert breakpoint %d:", b->number); + warning ("Temporarily disabling shared library breakpoints:"); } disabled_breaks = 1; - printf_filtered ("%d ", b->number); + warning ("breakpoint #%d ", b->number); } else #endif { target_terminal_ours_for_output (); - fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); + warning ("Cannot insert breakpoint %d:", b->number); #ifdef ONE_PROCESS_WRITETEXT - fprintf_unfiltered (gdb_stderr, - "The same program may be running in another process.\n"); + warning ("The same program may be running in another process."); #endif - memory_error (val, b->address); /* which bombs us out */ + memory_error (val, b->address); /* which bombs us out */ } } else b->inserted = 1; + + if (val) + return_val = val; /* remember failure */ } else if (ep_is_exception_catchpoint (b) && b->enable != disabled @@ -736,15 +820,16 @@ insert_breakpoints () /* 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 */ + /* Format possible error message */ + sprintf (message, message1, b->number); val = target_insert_breakpoint (b->address, b->shadow_contents); if (val) { /* Couldn't set breakpoint for some reason */ target_terminal_ours_for_output (); - fprintf_unfiltered (gdb_stderr, - "Cannot insert catchpoint %d; disabling it\n", b->number); + warning ("Cannot insert catchpoint %d; disabling it.", + b->number); b->enable = disabled; } else @@ -752,7 +837,8 @@ insert_breakpoints () /* 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.kind = b->type == bp_catch_catch ? + EX_EVENT_CATCH : EX_EVENT_THROW; args.enable = 1; val = catch_errors (cover_target_enable_exception_callback, &args, @@ -766,16 +852,21 @@ insert_breakpoints () { /* something went wrong */ target_terminal_ours_for_output (); - fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d; disabling it\n", b->number); + warning ("Cannot insert catchpoint %d; disabling it.", + b->number); b->enable = disabled; } } + + if (val) + return_val = val; /* remember failure */ } else if ((b->type == bp_hardware_watchpoint || b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) && b->enable == enabled + && b->disposition != del_at_next_stop && !b->inserted && !b->duplicate) { @@ -810,8 +901,13 @@ insert_breakpoints () if (within_current_scope) { /* Evaluate the expression and cut the chain of values - produced off from the value chain. */ + produced off from the value chain. + + Make sure the value returned isn't lazy; we use + laziness to determine what memory GDB actually needed + in order to compute the value of the expression. */ v = evaluate_expression (b->exp); + VALUE_CONTENTS(v); value_release_to_mark (mark); b->val_chain = v; @@ -820,39 +916,62 @@ insert_breakpoints () /* 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) + /* If it's a memory location, and GDB actually needed + its contents to evaluate the expression, then we + must watch it. */ + if (VALUE_LVAL (v) == lval_memory + && ! VALUE_LAZY (v)) { - 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) + struct type *vtype = check_typedef (VALUE_TYPE (v)); + + /* We only watch structs and arrays if user asked + for it explicitly, never if they just happen to + appear in the middle of some value chain. */ + if (v == b->val_chain + || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT + && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) { - b->inserted = 0; - break; + CORE_ADDR addr; + int len, type; + + addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); + len = TYPE_LENGTH (VALUE_TYPE (v)); + type = hw_write; + if (b->type == bp_read_watchpoint) + type = hw_read; + else if (b->type == bp_access_watchpoint) + type = hw_access; + + val = target_insert_watchpoint (addr, len, type); + if (val == -1) + { + /* Don't exit the loop, try to insert + every value on the value chain. That's + because we will be removing all the + watches below, and removing a + watchpoint we didn't insert could have + adverse effects. */ + b->inserted = 0; + } + val = 0; } - 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); + { + remove_breakpoint (b, mark_uninserted); + warning ("Could not insert hardware watchpoint %d.", + b->number); + val = -1; + } } else { - printf_filtered ("\ -Hardware watchpoint %d deleted because the program has left the block in\n\ -which its expression is valid.\n", b->number); + printf_filtered ("Hardware watchpoint %d deleted ", b->number); + printf_filtered ("because the program has left the block \n"); + printf_filtered ("in which its expression is valid.\n"); if (b->related_breakpoint) b->related_breakpoint->disposition = del_at_next_stop; b->disposition = del_at_next_stop; @@ -861,7 +980,10 @@ which its expression is valid.\n", b->number); /* Restore the frame and level. */ if ((saved_frame != selected_frame) || (saved_level != selected_frame_level)) - select_and_print_frame (saved_frame, saved_level); + select_frame (saved_frame, saved_level); + + if (val) + return_val = val; /* remember failure */ } else if ((b->type == bp_catch_fork || b->type == bp_catch_vfork @@ -883,27 +1005,28 @@ which its expression is valid.\n", b->number); val = target_insert_exec_catchpoint (inferior_pid); break; default: - warning ("GDB bug: breakpoint.c (insert_breakpoints): enclosing `if' does not protect `switch'"); + warning ("Internal error, %s line %d.", __FILE__, __LINE__); break; } if (val < 0) { target_terminal_ours_for_output (); - fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d:\n", b->number); + warning ("Cannot insert catchpoint %d.", b->number); } else b->inserted = 1; + + if (val) + return_val = val; /* remember failure */ } } - if (disabled_breaks) - printf_filtered ("\n"); - return val; + return return_val; } int -remove_breakpoints () +remove_breakpoints (void) { register struct breakpoint *b; int val; @@ -921,14 +1044,35 @@ remove_breakpoints () } int -reattach_breakpoints (pid) - int pid; +remove_hw_watchpoints (void) +{ + register struct breakpoint *b; + int val; + + ALL_BREAKPOINTS (b) + { + if (b->inserted + && (b->type == bp_hardware_watchpoint + || b->type == bp_read_watchpoint + || b->type == bp_access_watchpoint)) + { + val = remove_breakpoint (b, mark_uninserted); + if (val != 0) + return val; + } + } + return 0; +} + +int +reattach_breakpoints (int pid) { register struct breakpoint *b; int val; int saved_inferior_pid = inferior_pid; - inferior_pid = pid; /* Because remove_breakpoint will use this global. */ + /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ + inferior_pid = pid; /* Because remove_breakpoint will use this global. */ ALL_BREAKPOINTS (b) { if (b->inserted) @@ -950,7 +1094,7 @@ reattach_breakpoints (pid) } void -update_breakpoints_after_exec () +update_breakpoints_after_exec (void) { struct breakpoint *b; struct breakpoint *temp; @@ -969,6 +1113,13 @@ update_breakpoints_after_exec () continue; } + /* Thread event breakpoints must be set anew after an exec(). */ + if (b->type == bp_thread_event) + { + delete_breakpoint (b); + continue; + } + /* Step-resume breakpoints are meaningless after an exec(). */ if (b->type == bp_step_resume) { @@ -994,10 +1145,10 @@ update_breakpoints_after_exec () 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.) + 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 @@ -1025,15 +1176,17 @@ update_breakpoints_after_exec () 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. + 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.) */ - (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; @@ -1056,8 +1209,7 @@ update_breakpoints_after_exec () } int -detach_breakpoints (pid) - int pid; +detach_breakpoints (int pid) { register struct breakpoint *b; int val; @@ -1066,7 +1218,8 @@ detach_breakpoints (pid) if (pid == inferior_pid) error ("Cannot detach breakpoints of inferior_pid"); - inferior_pid = pid; /* Because remove_breakpoint will use this global. */ + /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ + inferior_pid = pid; /* Because remove_breakpoint will use this global. */ ALL_BREAKPOINTS (b) { if (b->inserted) @@ -1084,14 +1237,17 @@ detach_breakpoints (pid) } static int -remove_breakpoint (b, is) - struct breakpoint *b; - insertion_state_t is; +remove_breakpoint (struct breakpoint *b, insertion_state_t is) { int val; + if (b->enable == permanent) + /* Permanent breakpoints cannot be inserted or removed. */ + return 0; + if (b->type == bp_none) - warning ("attempted to remove apparently deleted breakpoint #%d?\n", b->number); + warning ("attempted to remove apparently deleted breakpoint #%d?", + b->number); if (b->type != bp_watchpoint && b->type != bp_hardware_watchpoint @@ -1102,7 +1258,6 @@ remove_breakpoint (b, is) && 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); @@ -1111,7 +1266,7 @@ remove_breakpoint (b, is) /* 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. */ + presumably remove the breakpoint there as well. */ if (overlay_debugging && b->section && section_is_overlay (b->section)) { @@ -1149,27 +1304,36 @@ remove_breakpoint (b, is) { /* For each memory reference remove the watchpoint at that address. */ - if (v->lval == lval_memory) + if (VALUE_LVAL (v) == lval_memory + && ! VALUE_LAZY (v)) { - int addr, len, type; + struct type *vtype = check_typedef (VALUE_TYPE (v)); - 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; + if (v == b->val_chain + || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT + && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) + { + CORE_ADDR addr; + int len, type; + + addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); + len = TYPE_LENGTH (VALUE_TYPE (v)); + type = hw_write; + if (b->type == bp_read_watchpoint) + type = hw_read; + else if (b->type == bp_access_watchpoint) + type = hw_access; + + val = target_remove_watchpoint (addr, len, type); + if (val == -1) + b->inserted = 1; + val = 0; + } } } /* Failure to remove any of the hardware watchpoints comes here. */ if ((is == mark_uninserted) && (b->inserted)) - warning ("Hardware watchpoint %d: Could not remove watchpoint\n", + warning ("Could not remove hardware watchpoint %d.", b->number); /* Free the saved value chain. We will construct a new one @@ -1200,7 +1364,7 @@ remove_breakpoint (b, is) val = target_remove_exec_catchpoint (inferior_pid); break; default: - warning ("GDB bug: breakpoint.c (remove_breakpoint): enclosing `if' does not protect `switch'"); + warning ("Internal error, %s line %d.", __FILE__, __LINE__); break; } if (val) @@ -1237,7 +1401,7 @@ remove_breakpoint (b, is) /* Clear the "inserted" flag in all breakpoints. */ void -mark_breakpoints_out () +mark_breakpoints_out (void) { register struct breakpoint *b; @@ -1245,20 +1409,20 @@ mark_breakpoints_out () b->inserted = 0; } -/* Clear the "inserted" flag in all breakpoints and delete any breakpoints - which should go away between runs of the program. +/* Clear the "inserted" flag in all breakpoints and delete any + breakpoints which should go away between runs of the program. Plus other such housekeeping that has to be done for breakpoints between runs. - Note: this function gets called at the end of a run (by generic_mourn_inferior) - and when a run begins (by init_wait_for_inferior). */ + 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; +breakpoint_init_inferior (enum inf_context context) { register struct breakpoint *b, *temp; static int warning_needed = 0; @@ -1308,44 +1472,53 @@ breakpoint_init_inferior (context) /* 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 ("Exception catchpoints from last run were deleted."); + warning ("You must reinsert them explicitly."); warning_needed = 0; } } -/* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. - When continuing from a location with a breakpoint, - we actually single step once before calling insert_breakpoints. */ +/* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint + exists at PC. It returns ordinary_breakpoint_here if it's an + ordinary breakpoint, or permanent_breakpoint_here if it's a + permanent breakpoint. + - When continuing from a location with an ordinary breakpoint, we + actually single step once before calling insert_breakpoints. + - When continuing from a localion with a permanent breakpoint, we + need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by + the target, to advance the PC past the breakpoint. */ -int -breakpoint_here_p (pc) - CORE_ADDR pc; +enum breakpoint_here +breakpoint_here_p (CORE_ADDR pc) { register struct breakpoint *b; + int any_breakpoint_here = 0; ALL_BREAKPOINTS (b) - if (b->enable == enabled - && b->enable != shlib_disabled - && b->enable != call_disabled + if ((b->enable == enabled + || b->enable == permanent) && b->address == pc) /* bp is enabled and matches pc */ - { - if (overlay_debugging && - section_is_overlay (b->section) && - !section_is_mapped (b->section)) - continue; /* unmapped overlay -- can't be a match */ - else - return 1; - } + { + if (overlay_debugging && + section_is_overlay (b->section) && + !section_is_mapped (b->section)) + continue; /* unmapped overlay -- can't be a match */ + else if (b->enable == permanent) + return permanent_breakpoint_here; + else + any_breakpoint_here = 1; + } - return 0; + return any_breakpoint_here ? ordinary_breakpoint_here : 0; } -/* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), but it - only returns true if there is actually a breakpoint inserted at PC. */ + +/* 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; +breakpoint_inserted_here_p (CORE_ADDR pc) { register struct breakpoint *b; @@ -1364,14 +1537,14 @@ breakpoint_inserted_here_p (pc) return 0; } -/* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY - because figuring out the saved SP would take too much time, at least using - get_saved_register on the 68k. This means that for this function to - work right a port must use the bp_call_dummy breakpoint. */ +/* Return nonzero if FRAME is a dummy frame. We can't use + PC_IN_CALL_DUMMY because figuring out the saved SP would take too + much time, at least using get_saved_register on the 68k. This + means that for this function to work right a port must use the + bp_call_dummy breakpoint. */ int -frame_in_dummy (frame) - struct frame_info *frame; +frame_in_dummy (struct frame_info *frame) { struct breakpoint *b; @@ -1396,13 +1569,11 @@ frame_in_dummy (frame) return 0; } -/* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC - is valid for process/thread PID. */ +/* breakpoint_thread_match (PC, PID) returns true if the breakpoint at + PC is valid for process/thread PID. */ int -breakpoint_thread_match (pc, pid) - CORE_ADDR pc; - int pid; +breakpoint_thread_match (CORE_ADDR pc, int pid) { struct breakpoint *b; int thread; @@ -1432,8 +1603,7 @@ breakpoint_thread_match (pc, pid) in breakpoint.h. */ int -ep_is_catchpoint (ep) - struct breakpoint *ep; +ep_is_catchpoint (struct breakpoint *ep) { return (ep->type == bp_catch_load) @@ -1442,39 +1612,32 @@ ep_is_catchpoint (ep) || (ep->type == bp_catch_vfork) || (ep->type == bp_catch_exec) || (ep->type == bp_catch_catch) - || (ep->type == bp_catch_throw) - + || (ep->type == bp_catch_throw); /* ??rehrauer: Add more kinds here, as are implemented... */ - ; } int -ep_is_shlib_catchpoint (ep) - struct breakpoint *ep; +ep_is_shlib_catchpoint (struct breakpoint *ep) { return (ep->type == bp_catch_load) - || (ep->type == bp_catch_unload) - ; + || (ep->type == bp_catch_unload); } int -ep_is_exception_catchpoint (ep) - struct breakpoint *ep; +ep_is_exception_catchpoint (struct breakpoint *ep) { return (ep->type == bp_catch_catch) - || (ep->type == bp_catch_throw) - ; + || (ep->type == bp_catch_throw); } /* Clear a bpstat so that it says we are not at any breakpoint. Also free any storage that is part of a bpstat. */ void -bpstat_clear (bsp) - bpstat *bsp; +bpstat_clear (bpstat *bsp) { bpstat p; bpstat q; @@ -1487,7 +1650,7 @@ bpstat_clear (bsp) q = p->next; if (p->old_val != NULL) value_free (p->old_val); - free ((PTR) p); + xfree (p); p = q; } *bsp = NULL; @@ -1497,8 +1660,7 @@ bpstat_clear (bsp) is part of the bpstat is copied as well. */ bpstat -bpstat_copy (bs) - bpstat bs; +bpstat_copy (bpstat bs) { bpstat p = NULL; bpstat tmp; @@ -1525,9 +1687,7 @@ bpstat_copy (bs) /* Find the bpstat associated with this breakpoint */ bpstat -bpstat_find_breakpoint (bsp, breakpoint) - bpstat bsp; - struct breakpoint *breakpoint; +bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) { if (bsp == NULL) return NULL; @@ -1549,8 +1709,7 @@ bpstat_find_breakpoint (bsp, breakpoint) See wait_for_inferior's use of this function. */ struct breakpoint * -bpstat_find_step_resume_breakpoint (bsp) - bpstat bsp; +bpstat_find_step_resume_breakpoint (bpstat bsp) { if (bsp == NULL) error ("Internal error (bpstat_find_step_resume_breakpoint)"); @@ -1573,8 +1732,7 @@ bpstat_find_step_resume_breakpoint (bsp) Return 0 if passed a bpstat which does not indicate any breakpoints. */ int -bpstat_num (bsp) - bpstat *bsp; +bpstat_num (bpstat *bsp) { struct breakpoint *b; @@ -1594,8 +1752,7 @@ bpstat_num (bsp) /* Modify BS so that the actions will not be performed. */ void -bpstat_clear_actions (bs) - bpstat bs; +bpstat_clear_actions (bpstat bs) { for (; bs != NULL; bs = bs->next) { @@ -1611,8 +1768,7 @@ bpstat_clear_actions (bs) /* Stub for cleaning up our state if we error-out of a breakpoint command */ /* ARGSUSED */ static void -cleanup_executing_breakpoints (ignore) - PTR ignore; +cleanup_executing_breakpoints (PTR ignore) { executing_breakpoint_commands = 0; } @@ -1623,8 +1779,7 @@ cleanup_executing_breakpoints (ignore) the global "breakpoint_proceeded" after each command. */ void -bpstat_do_actions (bsp) - bpstat *bsp; +bpstat_do_actions (bpstat *bsp) { bpstat bs; struct cleanup *old_chain; @@ -1677,83 +1832,126 @@ top: discard_cleanups (old_chain); } -/* This is the normal print_it function for a bpstat. In the future, +/* This is the normal print function for a bpstat. In the future, much of this logic could (should?) be moved to bpstat_stop_status, - by having it set different print_it functions. - - 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; -{ + by having it set different print_it values. + + Current scheme: When we stop, bpstat_print() is called. It loops + through the bpstat list of things causing this stop, calling the + print_bp_stop_message function on each one. The behavior of the + print_bp_stop_message function depends on the print_it field of + bpstat. If such field so indicates, call this function here. + + Return values from this routine (ultimately used by bpstat_print() + and normal_stop() to decide what to do): + PRINT_NOTHING: Means we already printed all we needed to print, + don't print anything else. + PRINT_SRC_ONLY: Means we printed something, and we do *not* desire + that something to be followed by a location. + PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire + that something to be followed by a location. + PRINT_UNKNOWN: Means we printed nothing or we need to do some more + analysis. */ + +static enum print_stop_action +print_it_typical (bpstat bs) +{ +#ifdef UI_OUT + struct cleanup *old_chain; + struct ui_stream *stb; + stb = ui_out_stream_new (uiout); + old_chain = make_cleanup_ui_out_stream_delete (stb); +#endif /* UI_OUT */ /* bs->breakpoint_at can be NULL if it was a momentary breakpoint which has since been deleted. */ - if (bs->breakpoint_at == NULL - || (bs->breakpoint_at->type != bp_breakpoint - && bs->breakpoint_at->type != bp_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 (bs->breakpoint_at == NULL) + return PRINT_UNKNOWN; - if (ep_is_shlib_catchpoint (bs->breakpoint_at)) + switch (bs->breakpoint_at->type) { + case bp_breakpoint: + case bp_hardware_breakpoint: +#ifdef UI_OUT + annotate_breakpoint (bs->breakpoint_at->number); + ui_out_text (uiout, "\nBreakpoint "); + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + ui_out_field_string (uiout, "reason", "breakpoint-hit"); + ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); + ui_out_text (uiout, ", "); + return PRINT_SRC_AND_LOC; +#else + /* I think the user probably only wants to see one breakpoint + number, not all of them. */ + annotate_breakpoint (bs->breakpoint_at->number); + printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); + return PRINT_SRC_AND_LOC; +#endif + break; + + case bp_shlib_event: + /* Did we stop because the user set the stop_on_solib_events + variable? (If so, we report this as a generic, "Stopped due + to shlib event" message.) */ + printf_filtered ("Stopped due to shared library event\n"); + return PRINT_NOTHING; + break; + + case bp_thread_event: + /* Not sure how we will get here. + GDB should not stop for these breakpoints. */ + printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); + return PRINT_NOTHING; + break; + + case bp_catch_load: annotate_catchpoint (bs->breakpoint_at->number); printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); - 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 ("loaded"); 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) - { + return PRINT_SRC_AND_LOC; + break; + + case bp_catch_unload: 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) - { + printf_filtered ("unloaded"); + printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); + return PRINT_SRC_AND_LOC; + break; + + case bp_catch_fork: + annotate_catchpoint (bs->breakpoint_at->number); + printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); + printf_filtered ("forked"); + printf_filtered (" process %d), ", + bs->breakpoint_at->forked_inferior_pid); + return PRINT_SRC_AND_LOC; + break; + + case bp_catch_vfork: + annotate_catchpoint (bs->breakpoint_at->number); + printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); + printf_filtered ("vforked"); + printf_filtered (" process %d), ", + bs->breakpoint_at->forked_inferior_pid); + return PRINT_SRC_AND_LOC; + break; + + case bp_catch_exec: annotate_catchpoint (bs->breakpoint_at->number); printf_filtered ("\nCatchpoint %d (exec'd %s), ", bs->breakpoint_at->number, bs->breakpoint_at->exec_pathname); - return 0; - } - else if (bs->breakpoint_at->type == bp_catch_catch) - { - if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) + return PRINT_SRC_AND_LOC; + break; + + case bp_catch_catch: + if (current_exception_event && + (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) { annotate_catchpoint (bs->breakpoint_at->number); - printf_filtered ("\nCatchpoint %d (exception caught), ", bs->breakpoint_at->number); + printf_filtered ("\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", @@ -1771,19 +1969,23 @@ print_it_normal (bs) printf_filtered ("unknown"); printf_filtered ("\n"); - return 1; /* don't bother to print location frame info */ + /* don't bother to print location frame info */ + return PRINT_SRC_ONLY; } else { - return -1; /* really throw, some other bpstat will handle it */ + /* really throw, some other bpstat will handle it */ + return PRINT_UNKNOWN; } - } - else if (bs->breakpoint_at->type == bp_catch_throw) - { - if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) + break; + + case bp_catch_throw: + if (current_exception_event && + (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) { annotate_catchpoint (bs->breakpoint_at->number); - printf_filtered ("\nCatchpoint %d (exception thrown), ", bs->breakpoint_at->number); + printf_filtered ("\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", @@ -1801,96 +2003,227 @@ print_it_normal (bs) printf_filtered ("unknown"); printf_filtered ("\n"); - return 1; /* don't bother to print location frame info */ + /* don't bother to print location frame info */ + return PRINT_SRC_ONLY; } else { - return -1; /* really catch, some other bpstat willhandle it */ + /* really catch, some other bpstat will handle it */ + return PRINT_UNKNOWN; } - } + break; - 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; + case bp_watchpoint: + case bp_hardware_watchpoint: + if (bs->old_val != NULL) + { + annotate_watchpoint (bs->breakpoint_at->number); +#ifdef UI_OUT + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + ui_out_field_string (uiout, "reason", "watchpoint-trigger"); + mention (bs->breakpoint_at); + ui_out_list_begin (uiout, "value"); + ui_out_text (uiout, "\nOld value = "); + value_print (bs->old_val, stb->stream, 0, Val_pretty_default); + ui_out_field_stream (uiout, "old", stb); + ui_out_text (uiout, "\nNew value = "); + value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); + ui_out_field_stream (uiout, "new", stb); + ui_out_list_end (uiout); + ui_out_text (uiout, "\n"); +#else + mention (bs->breakpoint_at); + printf_filtered ("\nOld value = "); + value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); + printf_filtered ("\nNew value = "); + value_print (bs->breakpoint_at->val, gdb_stdout, 0, + Val_pretty_default); + printf_filtered ("\n"); +#endif + value_free (bs->old_val); + bs->old_val = NULL; + } /* More than one watchpoint may have been triggered. */ - return -1; - } - else if (bs->breakpoint_at->type == bp_access_watchpoint || - bs->breakpoint_at->type == bp_read_watchpoint) - { + return PRINT_UNKNOWN; + break; + + case bp_read_watchpoint: +#ifdef UI_OUT + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); + mention (bs->breakpoint_at); + ui_out_list_begin (uiout, "value"); + ui_out_text (uiout, "\nValue = "); + value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); + ui_out_field_stream (uiout, "value", stb); + ui_out_list_end (uiout); + ui_out_text (uiout, "\n"); +#else mention (bs->breakpoint_at); printf_filtered ("\nValue = "); value_print (bs->breakpoint_at->val, gdb_stdout, 0, Val_pretty_default); printf_filtered ("\n"); - return -1; - } - /* We can't deal with it. Maybe another member of the bpstat chain can. */ - return -1; -} +#endif + return PRINT_UNKNOWN; + break; -/* Print a message indicating what happened. - This is called from normal_stop(). - The input to this routine is the head of the bpstat list - a list - of the eventpoints that caused this stop. - This routine calls the "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: + case bp_access_watchpoint: +#ifdef UI_OUT + if (bs->old_val != NULL) + { + annotate_watchpoint (bs->breakpoint_at->number); + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); + mention (bs->breakpoint_at); + ui_out_list_begin (uiout, "value"); + ui_out_text (uiout, "\nOld value = "); + value_print (bs->old_val, stb->stream, 0, Val_pretty_default); + ui_out_field_stream (uiout, "old", stb); + value_free (bs->old_val); + bs->old_val = NULL; + ui_out_text (uiout, "\nNew value = "); + } + else + { + mention (bs->breakpoint_at); + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + ui_out_list_begin (uiout, "value"); + ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); + ui_out_text (uiout, "\nValue = "); + } + value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); + ui_out_field_stream (uiout, "new", stb); + ui_out_list_end (uiout); + ui_out_text (uiout, "\n"); +#else + if (bs->old_val != NULL) + { + annotate_watchpoint (bs->breakpoint_at->number); + mention (bs->breakpoint_at); + printf_filtered ("\nOld value = "); + value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); + value_free (bs->old_val); + bs->old_val = NULL; + printf_filtered ("\nNew value = "); + } + else + { + mention (bs->breakpoint_at); + printf_filtered ("\nValue = "); + } + value_print (bs->breakpoint_at->val, gdb_stdout, 0, + Val_pretty_default); + printf_filtered ("\n"); +#endif + return PRINT_UNKNOWN; + break; - -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. */ + /* Fall through, we don't deal with these types of breakpoints + here. */ -int -bpstat_print (bs) - bpstat bs; -{ - int val; + case bp_finish: +#ifdef UI_OUT + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + ui_out_field_string (uiout, "reason", "function-finished"); +#endif + return PRINT_UNKNOWN; + break; - if (bs == NULL) - return -1; + case bp_until: +#ifdef UI_OUT + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + ui_out_field_string (uiout, "reason", "location-reached"); +#endif + return PRINT_UNKNOWN; + break; - val = (*bs->print_it) (bs); - if (val >= 0) - return val; + case bp_none: + case bp_longjmp: + case bp_longjmp_resume: + case bp_step_resume: + case bp_through_sigtramp: + case bp_watchpoint_scope: + case bp_call_dummy: + default: + return PRINT_UNKNOWN; + } +} + +/* Generic routine for printing messages indicating why we + stopped. The behavior of this function depends on the value + 'print_it' in the bpstat structure. Under some circumstances we + may decide not to print anything here and delegate the task to + normal_stop(). */ + +static enum print_stop_action +print_bp_stop_message (bpstat bs) +{ + switch (bs->print_it) + { + case print_it_noop: + /* Nothing should be printed for this bpstat entry. */ + return PRINT_UNKNOWN; + break; + + case print_it_done: + /* We still want to print the frame, but we already printed the + relevant messages. */ + return PRINT_SRC_AND_LOC; + break; + + case print_it_normal: + /* Normal case, we handle everything in print_it_typical. */ + return print_it_typical (bs); + break; + default: + internal_error (__FILE__, __LINE__, + "print_bp_stop_message: unrecognized enum value"); + break; + } +} + +/* Print a message indicating what happened. This is called from + normal_stop(). The input to this routine is the head of the bpstat + list - a list of the eventpoints that caused this stop. This + routine calls the generic print routine for printing a message + about reasons for stopping. This will print (for example) the + "Breakpoint n," part of the output. The return value of this + routine is one of: + + PRINT_UNKNOWN: Means we printed nothing + PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent + code to print the location. An example is + "Breakpoint 1, " which should be followed by + the location. + PRINT_SRC_ONLY: Means we printed something, but there is no need + to also print the location part of the message. + An example is the catch/throw messages, which + don't require a location appended to the end. + PRINT_NOTHING: We have done some printing and we don't need any + further info to be printed.*/ + +enum print_stop_action +bpstat_print (bpstat bs) +{ + int val; /* Maybe another breakpoint in the chain caused us to stop. - (Currently all watchpoints go on the bpstat whether hit or - not. That probably could (should) be changed, provided care is taken + (Currently all watchpoints go on the bpstat whether hit or not. + That probably could (should) be changed, provided care is taken with respect to bpstat_explains_signal). */ - if (bs->next) - return bpstat_print (bs->next); + for (; bs; bs = bs->next) + { + val = print_bp_stop_message (bs); + if (val == PRINT_SRC_ONLY + || val == PRINT_SRC_AND_LOC + || val == PRINT_NOTHING) + return val; + } - /* We reached the end of the chain without printing anything. */ - return -1; + /* We reached the end of the chain, or we got a null BS to start + with and nothing was printed. */ + return PRINT_UNKNOWN; } /* Evaluate the expression EXP and return 1 if value is zero. @@ -1899,8 +2232,7 @@ bpstat_print (bs) make it pass through catch_errors. */ static int -breakpoint_cond_eval (exp) - PTR exp; +breakpoint_cond_eval (PTR exp) { value_ptr mark = value_mark (); int i = !value_true (evaluate_expression ((struct expression *) exp)); @@ -1911,9 +2243,7 @@ breakpoint_cond_eval (exp) /* 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_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) { bpstat bs; @@ -1942,8 +2272,7 @@ bpstat_alloc (b, cbs) /* Check watchpoint condition. */ static int -watchpoint_check (p) - PTR p; +watchpoint_check (PTR p) { bpstat bs = (bpstat) p; struct breakpoint *b; @@ -2005,9 +2334,23 @@ watchpoint_check (p) So we can't even detect the first assignment to it and watch after that (since the garbage may or may not equal the first value assigned). */ + /* We print all the stop information in print_it_typical(), but + in this case, by the time we call print_it_typical() this bp + will be deleted already. So we have no choice but print the + information here. */ +#ifdef UI_OUT + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + ui_out_field_string (uiout, "reason", "watchpoint-scope"); + ui_out_text (uiout, "\nWatchpoint "); + ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); + ui_out_text (uiout, " deleted because the program has left the block in\n\ +which its expression is valid.\n"); +#else printf_filtered ("\ Watchpoint %d deleted because the program has left the block in\n\ which its expression is valid.\n", bs->breakpoint_at->number); +#endif + if (b->related_breakpoint) b->related_breakpoint->disposition = del_at_next_stop; b->disposition = del_at_next_stop; @@ -2016,40 +2359,6 @@ which its expression is valid.\n", bs->breakpoint_at->number); } } -/* 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 @@ -2071,9 +2380,7 @@ print_it_noop (bs) commands, FIXME??? fields. */ bpstat -bpstat_stop_status (pc, not_a_breakpoint) - CORE_ADDR *pc; - int not_a_breakpoint; +bpstat_stop_status (CORE_ADDR *pc, int not_a_breakpoint) { register struct breakpoint *b, *temp; CORE_ADDR bp_addr; @@ -2088,7 +2395,8 @@ bpstat_stop_status (pc, not_a_breakpoint) char message[sizeof (message1) + 30 /* slop */ ]; /* Get the address where the breakpoint would have been. */ - bp_addr = *pc - DECR_PC_AFTER_BREAK; + bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P ? + 0 : DECR_PC_AFTER_BREAK); ALL_BREAKPOINTS_SAFE (b, temp) { @@ -2117,13 +2425,6 @@ bpstat_stop_status (pc, not_a_breakpoint) && b->address != (*pc - 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. */ @@ -2131,7 +2432,9 @@ bpstat_stop_status (pc, not_a_breakpoint) #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))) + && (strcmp (b->dll_pathname, + SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid)) + != 0))) #endif ) continue; @@ -2140,7 +2443,9 @@ bpstat_stop_status (pc, not_a_breakpoint) #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))) + && (strcmp (b->dll_pathname, + SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid)) + != 0))) #endif ) continue; @@ -2170,12 +2475,17 @@ bpstat_stop_status (pc, not_a_breakpoint) bs->print = 1; sprintf (message, message1, b->number); - if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) + if (b->type == bp_watchpoint || + b->type == bp_hardware_watchpoint) { - switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL)) + switch (catch_errors (watchpoint_check, bs, message, + RETURN_MASK_ALL)) { case WP_DELETED: /* We've already printed what needs to be printed. */ + /* Actually this is superfluous, because by the time we + call print_it_typical() the wp will be already deleted, + and the function will return immediately. */ bs->print_it = print_it_done; /* Stop. */ break; @@ -2187,8 +2497,6 @@ bpstat_stop_status (pc, not_a_breakpoint) /* 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. */ @@ -2206,7 +2514,8 @@ bpstat_stop_status (pc, not_a_breakpoint) break; } } - else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) + else if (b->type == bp_read_watchpoint || + b->type == bp_access_watchpoint) { CORE_ADDR addr; value_ptr v; @@ -2217,17 +2526,29 @@ bpstat_stop_status (pc, not_a_breakpoint) continue; for (v = b->val_chain; v; v = v->next) { - if (v->lval == lval_memory) + if (VALUE_LVAL (v) == lval_memory + && ! VALUE_LAZY (v)) { - CORE_ADDR vaddr; + struct type *vtype = check_typedef (VALUE_TYPE (v)); - vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); - if (addr == vaddr) - found = 1; + if (v == b->val_chain + || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT + && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) + { + CORE_ADDR vaddr; + + vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); + /* Exact match not required. Within range is + sufficient. */ + if (addr >= vaddr && + addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) + found = 1; + } } } if (found) - switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL)) + switch (catch_errors (watchpoint_check, bs, message, + RETURN_MASK_ALL)) { case WP_DELETED: /* We've already printed what needs to be printed. */ @@ -2235,6 +2556,17 @@ bpstat_stop_status (pc, not_a_breakpoint) /* Stop. */ break; case WP_VALUE_CHANGED: + if (b->type == bp_read_watchpoint) + { + /* Don't stop: read watchpoints shouldn't fire if + the value has changed. This is for targets which + cannot set read-only watchpoints. */ + bs->print_it = print_it_noop; + bs->stop = 0; + continue; + } + ++(b->hit_count); + break; case WP_VALUE_NOT_CHANGED: /* Stop. */ ++(b->hit_count); @@ -2251,6 +2583,16 @@ bpstat_stop_status (pc, not_a_breakpoint) bs->print_it = print_it_done; break; } + else /* found == 0 */ + { + /* This is a case where some watchpoint(s) triggered, + but not at the address of this watchpoint (FOUND + was left zero). So don't print anything for this + watchpoint. */ + bs->print_it = print_it_noop; + bs->stop = 0; + continue; + } } else { @@ -2261,9 +2603,8 @@ bpstat_stop_status (pc, not_a_breakpoint) 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)))) + if (b->frame && + b->frame != (get_current_frame ())->frame) bs->stop = 0; else { @@ -2290,6 +2631,7 @@ bpstat_stop_status (pc, not_a_breakpoint) else if (b->ignore_count > 0) { b->ignore_count--; + annotate_ignore_count_change (); bs->stop = 0; } else @@ -2356,8 +2698,7 @@ bpstat_stop_status (pc, not_a_breakpoint) /* Tell what to do about this bpstat. */ struct bpstat_what -bpstat_what (bs) - bpstat bs; +bpstat_what (bpstat bs) { /* Classify each bpstat as one of the following. */ enum class @@ -2427,8 +2768,8 @@ bpstat_what (bs) as bp_silent and wp_noisy is the same as bp_noisy. That is because after stopping, the check for whether to step over a breakpoint (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without - reference to how we stopped. We retain separate wp_silent and bp_silent - codes in case we want to change that someday. + reference to how we stopped. We retain separate wp_silent and + bp_silent codes in case we want to change that someday. Another possibly interesting property of this table is that there's a partial ordering, priority-like, of the actions. Once @@ -2436,7 +2777,7 @@ bpstat_what (bs) back and decide something of a lower priority is better. The ordering is: - kc < clr sgl shl slr sn sr ss ts + kc < clr sgl shl shlr slr sn sr ss ts sgl < clrs shl shlr slr sn sr ss ts slr < err shl shlr sn sr ss ts clr < clrs err shl shlr sn sr ss ts @@ -2481,7 +2822,7 @@ bpstat_what (bs) /*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}, + {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, /*long_resume */ {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, /*step_resume */ @@ -2548,8 +2889,8 @@ bpstat_what (bs) bs_class = wp_silent; } else - /* There was a watchpoint, but we're not stopping. This requires - no further action. */ + /* There was a watchpoint, but we're not stopping. + This requires no further action. */ bs_class = no_effect; break; case bp_longjmp: @@ -2576,6 +2917,9 @@ bpstat_what (bs) case bp_shlib_event: bs_class = shlib_event; break; + case bp_thread_event: + bs_class = bp_nostop; + break; case bp_catch_load: case bp_catch_unload: /* Only if this catchpoint triggered should we cause the @@ -2597,8 +2941,8 @@ bpstat_what (bs) bs_class = bp_silent; } else - /* There was a catchpoint, but we're not stopping. This requires - no further action. */ + /* There was a catchpoint, but we're not stopping. + This requires no further action. */ bs_class = no_effect; break; case bp_catch_catch: @@ -2614,8 +2958,8 @@ bpstat_what (bs) bs_class = bs->print ? bp_noisy : bp_silent; break; case bp_call_dummy: - /* Make sure the action is stop (silent or noisy), so infrun.c - pops the dummy frame. */ + /* Make sure the action is stop (silent or noisy), + so infrun.c pops the dummy frame. */ bs_class = bp_silent; retval.call_dummy = 1; break; @@ -2631,7 +2975,7 @@ bpstat_what (bs) just to things like whether watchpoints are set. */ int -bpstat_should_step () +bpstat_should_step (void) { struct breakpoint *b; ALL_BREAKPOINTS (b) @@ -2642,7 +2986,7 @@ bpstat_should_step () /* Nonzero if there are enabled hardware watchpoints. */ int -bpstat_have_active_hw_watchpoints () +bpstat_have_active_hw_watchpoints (void) { struct breakpoint *b; ALL_BREAKPOINTS (b) @@ -2660,9 +3004,7 @@ bpstat_have_active_hw_watchpoints () 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; +bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) { struct bpstats root_bs[1]; bpstat bs = root_bs; @@ -2681,7 +3023,8 @@ bpstat_get_triggered_catchpoints (ep_list, cp_list) 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!! */ + (ep->type != bp_catch_throw)) + /* pai: (temp) ADD fork/vfork here!! */ continue; /* Yes; add it to the list. */ @@ -2697,7 +3040,7 @@ bpstat_get_triggered_catchpoints (ep_list, cp_list) 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); + xfree (ep->triggered_dll_pathname); if (ep->type == bp_catch_load) dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); else @@ -2707,7 +3050,8 @@ bpstat_get_triggered_catchpoints (ep_list, cp_list) #endif if (dll_pathname) { - ep->triggered_dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); + ep->triggered_dll_pathname = (char *) + xmalloc (strlen (dll_pathname) + 1); strcpy (ep->triggered_dll_pathname, dll_pathname); } else @@ -2717,28 +3061,19 @@ bpstat_get_triggered_catchpoints (ep_list, cp_list) *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; - +/* Print B to gdb_stdout. */ static void -breakpoint_1 (bnum, allflag) - int bnum; - int allflag; +print_one_breakpoint (struct breakpoint *b, + CORE_ADDR *last_addr) { - 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[] = + struct ep_type_description + { + enum bptype type; + char *description; + }; + static struct ep_type_description bptypes[] = { {bp_none, "?deleted?"}, {bp_breakpoint, "breakpoint"}, @@ -2756,6 +3091,7 @@ breakpoint_1 (bnum, allflag) {bp_watchpoint_scope, "watchpoint scope"}, {bp_call_dummy, "call dummy"}, {bp_shlib_event, "shlib events"}, + {bp_thread_event, "thread events"}, {bp_catch_load, "catch load"}, {bp_catch_unload, "catch unload"}, {bp_catch_fork, "catch fork"}, @@ -2764,274 +3100,555 @@ breakpoint_1 (bnum, allflag) {bp_catch_catch, "catch catch"}, {bp_catch_throw, "catch throw"} }; - + static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; - static char bpenables[] = "nyn"; + static char bpenables[] = "nynny"; char wrap_indent[80]; +#ifdef UI_OUT + struct ui_stream *stb = ui_out_stream_new (uiout); + struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); +#endif + annotate_record (); +#ifdef UI_OUT + ui_out_list_begin (uiout, "bkpt"); +#endif - ALL_BREAKPOINTS (b) - if (bnum == -1 - || bnum == b->number) + /* 1 */ + annotate_field (0); +#ifdef UI_OUT + ui_out_field_int (uiout, "number", b->number); +#else + printf_filtered ("%-3d ", b->number); +#endif + + /* 2 */ + annotate_field (1); + if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) + || ((int) b->type != bptypes[(int) b->type].type)) + internal_error (__FILE__, __LINE__, + "bptypes table does not describe type #%d.", + (int) b->type); +#ifdef UI_OUT + ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); +#else + printf_filtered ("%-14s ", bptypes[(int) b->type].description); +#endif + + /* 3 */ + annotate_field (2); +#ifdef UI_OUT + ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); +#else + printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); +#endif + + /* 4 */ + annotate_field (3); +#ifdef UI_OUT + ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable]); + ui_out_spaces (uiout, 2); +#else + printf_filtered ("%-3c ", bpenables[(int) b->enable]); +#endif + + /* 5 and 6 */ + strcpy (wrap_indent, " "); + if (addressprint) + strcat (wrap_indent, " "); + switch (b->type) { -/* 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; + case bp_none: + internal_error (__FILE__, __LINE__, + "print_one_breakpoint: bp_none encountered\n"); + break; - if (!found_a_breakpoint++) + case bp_watchpoint: + case bp_hardware_watchpoint: + case bp_read_watchpoint: + case bp_access_watchpoint: + /* Field 4, the address, is omitted (which makes the columns + not line up too nicely with the headers, but the effect + is relatively readable). */ +#ifdef UI_OUT + if (addressprint) + ui_out_field_skip (uiout, "addr"); + annotate_field (5); + print_expression (b->exp, stb->stream); + ui_out_field_stream (uiout, "what", stb); +#else + annotate_field (5); + print_expression (b->exp, gdb_stdout); +#endif + break; + + case bp_catch_load: + case bp_catch_unload: + /* Field 4, the address, is omitted (which makes the columns + not line up too nicely with the headers, but the effect + is relatively readable). */ +#ifdef UI_OUT + if (addressprint) + ui_out_field_skip (uiout, "addr"); + annotate_field (5); + if (b->dll_pathname == NULL) { - 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 (); + ui_out_field_string (uiout, "what", ""); + ui_out_spaces (uiout, 1); } - - 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, " "); + else + { + ui_out_text (uiout, "library \""); + ui_out_field_string (uiout, "what", b->dll_pathname); + ui_out_text (uiout, "\" "); + } +#else + annotate_field (5); + if (b->dll_pathname == NULL) + printf_filtered (" "); + else + printf_filtered ("library \"%s\" ", b->dll_pathname); +#endif + break; + + case bp_catch_fork: + case bp_catch_vfork: + /* Field 4, the address, is omitted (which makes the columns + not line up too nicely with the headers, but the effect + is relatively readable). */ +#ifdef UI_OUT if (addressprint) - strcat (wrap_indent, " "); - switch (b->type) + ui_out_field_skip (uiout, "addr"); + annotate_field (5); + if (b->forked_inferior_pid != 0) { - 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 (" "); - 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")); - } + ui_out_text (uiout, "process "); + ui_out_field_int (uiout, "what", b->forked_inferior_pid); + ui_out_spaces (uiout, 1); + } +#else + annotate_field (5); + if (b->forked_inferior_pid != 0) + printf_filtered ("process %d ", b->forked_inferior_pid); + break; +#endif + + case bp_catch_exec: + /* Field 4, the address, is omitted (which makes the columns + not line up too nicely with the headers, but the effect + is relatively readable). */ +#ifdef UI_OUT + if (addressprint) + ui_out_field_skip (uiout, "addr"); + annotate_field (5); + if (b->exec_pathname != NULL) + { + ui_out_text (uiout, "program \""); + ui_out_field_string (uiout, "what", b->exec_pathname); + ui_out_text (uiout, "\" "); + } +#else + annotate_field (5); + if (b->exec_pathname != NULL) + printf_filtered ("program \"%s\" ", b->exec_pathname); +#endif + break; - annotate_field (5); + case bp_catch_catch: + /* Field 4, the address, is omitted (which makes the columns + not line up too nicely with the headers, but the effect + is relatively readable). */ +#ifdef UI_OUT + if (addressprint) + ui_out_field_skip (uiout, "addr"); + annotate_field (5); + ui_out_field_string (uiout, "what", "exception catch"); + ui_out_spaces (uiout, 1); +#else + annotate_field (5); + printf_filtered ("exception catch "); +#endif + break; - last_addr = b->address; - if (b->source_file) + case bp_catch_throw: + /* Field 4, the address, is omitted (which makes the columns + not line up too nicely with the headers, but the effect + is relatively readable). */ +#ifdef UI_OUT + if (addressprint) + ui_out_field_skip (uiout, "addr"); + annotate_field (5); + ui_out_field_string (uiout, "what", "exception throw"); + ui_out_spaces (uiout, 1); +#else + annotate_field (5); + printf_filtered ("exception throw "); +#endif + break; + + case bp_breakpoint: + case bp_hardware_breakpoint: + case bp_until: + case bp_finish: + case bp_longjmp: + case bp_longjmp_resume: + case bp_step_resume: + case bp_through_sigtramp: + case bp_watchpoint_scope: + case bp_call_dummy: + case bp_shlib_event: + case bp_thread_event: +#ifdef UI_OUT + if (addressprint) + { + annotate_field (4); + ui_out_field_core_addr (uiout, "addr", b->address); + } + annotate_field (5); + *last_addr = b->address; + if (b->source_file) + { + sym = find_pc_sect_function (b->address, b->section); + if (sym) { - 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); + ui_out_text (uiout, "in "); + ui_out_field_string (uiout, "func", + SYMBOL_SOURCE_NAME (sym)); + ui_out_wrap_hint (uiout, wrap_indent); + ui_out_text (uiout, " at "); } - else - print_address_symbolic (b->address, gdb_stdout, demangle, " "); - break; + ui_out_field_string (uiout, "file", b->source_file); + ui_out_text (uiout, ":"); + ui_out_field_int (uiout, "line", b->line_number); } - - if (b->thread != -1) - printf_filtered (" thread %d", b->thread); - - printf_filtered ("\n"); - - if (b->frame) + else { - annotate_field (6); - - printf_filtered ("\tstop only in stack frame at "); - print_address_numeric (b->frame, 1, gdb_stdout); - printf_filtered ("\n"); + print_address_symbolic (b->address, stb->stream, demangle, ""); + ui_out_field_stream (uiout, "at", stb); } - - if (b->cond) +#else + if (addressprint) { - annotate_field (7); - - printf_filtered ("\tstop only if "); - print_expression (b->cond, gdb_stdout); - printf_filtered ("\n"); + 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")); } - - if (b->thread != -1) + annotate_field (5); + *last_addr = b->address; + if (b->source_file) { - /* FIXME should make an annotation for this */ - printf_filtered ("\tstop only in thread %d\n", b->thread); + sym = find_pc_sect_function (b->address, b->section); + if (sym) + { + fputs_filtered ("in ", gdb_stdout); + fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); + wrap_here (wrap_indent); + fputs_filtered (" at ", gdb_stdout); + } + fputs_filtered (b->source_file, gdb_stdout); + printf_filtered (":%d", b->line_number); } + else + print_address_symbolic (b->address, gdb_stdout, demangle, " "); +#endif + break; + } + + if (b->thread != -1) + { +#ifdef UI_OUT + /* FIXME: This seems to be redundant and lost here; see the + "stop only in" line a little further down. */ + ui_out_text (uiout, " thread "); + ui_out_field_int (uiout, "thread", b->thread); +#else + printf_filtered (" thread %d", b->thread); +#endif + } + +#ifdef UI_OUT + ui_out_text (uiout, "\n"); +#else + printf_filtered ("\n"); +#endif + + if (b->frame) + { + annotate_field (6); +#ifdef UI_OUT + ui_out_text (uiout, "\tstop only in stack frame at "); + ui_out_field_core_addr (uiout, "frame", b->frame); + ui_out_text (uiout, "\n"); +#else + printf_filtered ("\tstop only in stack frame at "); + print_address_numeric (b->frame, 1, gdb_stdout); + printf_filtered ("\n"); +#endif + } + + if (b->cond) + { + annotate_field (7); +#ifdef UI_OUT + ui_out_text (uiout, "\tstop only if "); + print_expression (b->cond, stb->stream); + ui_out_field_stream (uiout, "cond", stb); + ui_out_text (uiout, "\n"); +#else + printf_filtered ("\tstop only if "); + print_expression (b->cond, gdb_stdout); + printf_filtered ("\n"); +#endif + } + + if (b->thread != -1) + { + /* FIXME should make an annotation for this */ +#ifdef UI_OUT + ui_out_text (uiout, "\tstop only in thread "); + ui_out_field_int (uiout, "thread", b->thread); + ui_out_text (uiout, "\n"); +#else + printf_filtered ("\tstop only in thread %d\n", b->thread); +#endif + } + + if (show_breakpoint_hit_counts && b->hit_count) + { + /* FIXME should make an annotation for this */ +#ifdef UI_OUT + if (ep_is_catchpoint (b)) + ui_out_text (uiout, "\tcatchpoint"); + else + ui_out_text (uiout, "\tbreakpoint"); + ui_out_text (uiout, " already hit "); + ui_out_field_int (uiout, "times", b->hit_count); + if (b->hit_count == 1) + ui_out_text (uiout, " time\n"); + else + ui_out_text (uiout, " times\n"); +#else + if (ep_is_catchpoint (b)) + printf_filtered ("\tcatchpoint"); + else + printf_filtered ("\tbreakpoint"); + printf_filtered (" already hit %d time%s\n", + b->hit_count, (b->hit_count == 1 ? "" : "s")); +#endif + } + +#ifdef UI_OUT + /* Output the count also if it is zero, but only if this is + mi. FIXME: Should have a better test for this. */ + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + if (show_breakpoint_hit_counts && b->hit_count == 0) + ui_out_field_int (uiout, "times", b->hit_count); +#endif - if (show_breakpoint_hit_counts && b->hit_count) + if (b->ignore_count) + { + annotate_field (8); +#ifdef UI_OUT + ui_out_text (uiout, "\tignore next "); + ui_out_field_int (uiout, "ignore", b->ignore_count); + ui_out_text (uiout, " hits\n"); +#else + printf_filtered ("\tignore next %d hits\n", b->ignore_count); +#endif + } + + if ((l = b->commands)) + { + annotate_field (9); +#ifdef UI_OUT + ui_out_list_begin (uiout, "script"); + print_command_lines (uiout, l, 4); + ui_out_list_end (uiout); +#else + while (l) { - /* 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")); + print_command_line (l, 4, gdb_stdout); + l = l->next; } +#endif + } +#ifdef UI_OUT + ui_out_list_end (uiout); + do_cleanups (old_chain); +#endif +} - if (b->ignore_count) - { - annotate_field (8); - - printf_filtered ("\tignore next %d hits\n", b->ignore_count); - } +struct captured_breakpoint_query_args + { + int bnum; + }; - if ((l = b->commands)) +static int +do_captured_breakpoint_query (void *data) +{ + struct captured_breakpoint_query_args *args = data; + register struct breakpoint *b; + CORE_ADDR dummy_addr = 0; + ALL_BREAKPOINTS (b) + { + if (args->bnum == b->number) { - annotate_field (9); - - while (l) - { - print_command_line (l, 4, gdb_stdout); - l = l->next; - } + print_one_breakpoint (b, &dummy_addr); + return GDB_RC_OK; } } + return GDB_RC_NONE; +} +enum gdb_rc +gdb_breakpoint_query (/* output object, */ int bnum) +{ + struct captured_breakpoint_query_args args; + args.bnum = bnum; + /* For the moment we don't trust print_one_breakpoint() to not throw + an error. */ + return catch_errors (do_captured_breakpoint_query, &args, + NULL, RETURN_MASK_ALL); +} + +/* Print information on breakpoint number BNUM, or -1 if all. + If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS + is nonzero, process only watchpoints. */ + +static void +breakpoint_1 (int bnum, int allflag) +{ + register struct breakpoint *b; + CORE_ADDR last_addr = (CORE_ADDR) -1; + int found_a_breakpoint = 0; + +#ifdef UI_OUT + if (addressprint) + ui_out_table_begin (uiout, 6, "BreakpointTable"); + else + ui_out_table_begin (uiout, 5, "BreakpointTable"); +#endif /* UI_OUT */ + + ALL_BREAKPOINTS (b) + if (bnum == -1 + || bnum == b->number) + { + /* We only print out user settable breakpoints unless the + allflag is set. */ + if (!allflag + && b->type != bp_breakpoint + && b->type != bp_catch_load + && b->type != bp_catch_unload + && b->type != bp_catch_fork + && b->type != bp_catch_vfork + && b->type != bp_catch_exec + && b->type != bp_catch_catch + && b->type != bp_catch_throw + && b->type != bp_hardware_breakpoint + && b->type != bp_watchpoint + && b->type != bp_read_watchpoint + && b->type != bp_access_watchpoint + && b->type != bp_hardware_watchpoint) + continue; + + if (!found_a_breakpoint++) + { + annotate_breakpoints_headers (); +#ifdef UI_OUT + annotate_field (0); + ui_out_table_header (uiout, 3, ui_left, "Num"); /* 1 */ + annotate_field (1); + ui_out_table_header (uiout, 14, ui_left, "Type"); /* 2 */ + annotate_field (2); + ui_out_table_header (uiout, 4, ui_left, "Disp"); /* 3 */ + annotate_field (3); + ui_out_table_header (uiout, 3, ui_left, "Enb"); /* 4 */ + if (addressprint) + { + annotate_field (4); + ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */ + } + annotate_field (5); + ui_out_table_header (uiout, 40, ui_noalign, "What"); /* 6 */ + ui_out_table_body (uiout); +#else + annotate_field (0); + printf_filtered ("Num "); + annotate_field (1); + printf_filtered ("Type "); + annotate_field (2); + printf_filtered ("Disp "); + annotate_field (3); + printf_filtered ("Enb "); + if (addressprint) + { + annotate_field (4); + printf_filtered ("Address "); + } + annotate_field (5); + printf_filtered ("What\n"); +#endif /* UI_OUT */ + annotate_breakpoints_table (); + } + + print_one_breakpoint (b, &last_addr); + } + if (!found_a_breakpoint) { +#ifdef UI_OUT + if (bnum == -1) + ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); + else + ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", + bnum); +#else if (bnum == -1) printf_filtered ("No breakpoints or watchpoints.\n"); else printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); +#endif /* UI_OUT */ } else - /* Compare against (CORE_ADDR)-1 in case some compiler decides - that a comparison of an unsigned with -1 is always false. */ - if (last_addr != (CORE_ADDR) - 1) - set_next_address (last_addr); + { + /* Compare against (CORE_ADDR)-1 in case some compiler decides + that a comparison of an unsigned with -1 is always false. */ + if (last_addr != (CORE_ADDR) -1) + set_next_address (last_addr); + } +#ifdef UI_OUT + ui_out_table_end (uiout); +#endif /* UI_OUT */ + /* FIXME? Should this be moved up so that it is only called when + there have been breakpoints? */ annotate_breakpoints_table_end (); } /* ARGSUSED */ static void -breakpoints_info (bnum_exp, from_tty) - char *bnum_exp; - int from_tty; +breakpoints_info (char *bnum_exp, int from_tty) { int bnum = -1; if (bnum_exp) - bnum = parse_and_eval_address (bnum_exp); + bnum = parse_and_eval_long (bnum_exp); breakpoint_1 (bnum, 0); } /* ARGSUSED */ static void -maintenance_info_breakpoints (bnum_exp, from_tty) - char *bnum_exp; - int from_tty; +maintenance_info_breakpoints (char *bnum_exp, int from_tty) { int bnum = -1; if (bnum_exp) - bnum = parse_and_eval_address (bnum_exp); + bnum = parse_and_eval_long (bnum_exp); breakpoint_1 (bnum, 1); } @@ -3039,9 +3656,7 @@ maintenance_info_breakpoints (bnum_exp, from_tty) /* Print a message describing any breakpoints set at PC. */ static void -describe_other_breakpoints (pc, section) - CORE_ADDR pc; - asection *section; +describe_other_breakpoints (CORE_ADDR pc, asection *section) { register int others = 0; register struct breakpoint *b; @@ -3060,12 +3675,15 @@ describe_other_breakpoints (pc, section) 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 ("%d%s%s ", + b->number, + ((b->enable == disabled || + b->enable == shlib_disabled || + b->enable == call_disabled) ? " (disabled)" + : b->enable == permanent ? " (permanent)" + : ""), + (others > 1) ? "," + : ((others == 1) ? " and" : "")); } printf_filtered ("also set at pc "); print_address_numeric (pc, 1, gdb_stdout); @@ -3077,11 +3695,8 @@ describe_other_breakpoints (pc, section) for the `break' command with no arguments. */ void -set_default_breakpoint (valid, addr, symtab, line) - int valid; - CORE_ADDR addr; - struct symtab *symtab; - int line; +set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, + int line) { default_breakpoint_valid = valid; default_breakpoint_address = addr; @@ -3091,15 +3706,16 @@ set_default_breakpoint (valid, addr, symtab, 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. */ + This is so that the bpt instruction is only inserted once. + If we have a permanent breakpoint at ADDRESS, make that one + the official one, and the rest as duplicates. */ static void -check_duplicates (address, section) - CORE_ADDR address; - asection *section; +check_duplicates (CORE_ADDR address, asection *section) { register struct breakpoint *b; register int count = 0; + struct breakpoint *perm_bp = 0; if (address == 0) /* Watchpoints are uninteresting */ return; @@ -3111,9 +3727,46 @@ check_duplicates (address, section) && b->address == address && (overlay_debugging == 0 || b->section == section)) { + /* Have we found a permanent breakpoint? */ + if (b->enable == permanent) + { + perm_bp = b; + break; + } + count++; b->duplicate = count > 1; } + + /* If we found a permanent breakpoint at this address, go over the + list again and declare all the other breakpoints there to be the + duplicates. */ + if (perm_bp) + { + perm_bp->duplicate = 0; + + /* Permanent breakpoint should always be inserted. */ + if (! perm_bp->inserted) + internal_error (__FILE__, __LINE__, + "allegedly permanent breakpoint is not " + "actually inserted"); + + ALL_BREAKPOINTS (b) + if (b != perm_bp) + { + if (b->inserted) + internal_error (__FILE__, __LINE__, + "another breakpoint was inserted on top of " + "a permanent breakpoint"); + + if (b->enable != disabled + && b->enable != shlib_disabled + && b->enable != call_disabled + && b->address == address + && (overlay_debugging == 0 || b->section == section)) + b->duplicate = 1; + } + } } /* Low level routine to set a breakpoint. @@ -3127,8 +3780,7 @@ check_duplicates (address, section) your arguments BEFORE calling this routine! */ struct breakpoint * -set_raw_breakpoint (sal) - struct symtab_and_line sal; +set_raw_breakpoint (struct symtab_and_line sal) { register struct breakpoint *b, *b1; @@ -3176,11 +3828,22 @@ set_raw_breakpoint (sal) return b; } + +/* Note that the breakpoint object B describes a permanent breakpoint + instruction, hard-wired into the inferior's code. */ +void +make_breakpoint_permanent (struct breakpoint *b) +{ + b->enable = permanent; + + /* By definition, permanent breakpoints are already present in the code. */ + b->inserted = 1; +} + #ifdef GET_LONGJMP_TARGET static void -create_longjmp_breakpoint (func_name) - char *func_name; +create_longjmp_breakpoint (char *func_name) { struct symtab_and_line sal; struct breakpoint *b; @@ -3190,7 +3853,8 @@ create_longjmp_breakpoint (func_name) { struct minimal_symbol *m; - m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *) NULL); + m = lookup_minimal_symbol_text (func_name, NULL, + (struct objfile *) NULL); if (m) sal.pc = SYMBOL_VALUE_ADDRESS (m); else @@ -3206,18 +3870,18 @@ create_longjmp_breakpoint (func_name) b->enable = disabled; b->silent = 1; if (func_name) - b->addr_string = strsave (func_name); + b->addr_string = xstrdup (func_name); b->number = internal_breakpoint_number--; } #endif /* #ifdef GET_LONGJMP_TARGET */ -/* Call this routine when stepping and nexting to enable a breakpoint if we do - a longjmp(). When we hit that breakpoint, call +/* Call this routine when stepping and nexting to enable a breakpoint + if we do a longjmp(). When we hit that breakpoint, call set_longjmp_resume_breakpoint() to figure out where we are going. */ void -enable_longjmp_breakpoint () +enable_longjmp_breakpoint (void) { register struct breakpoint *b; @@ -3230,7 +3894,7 @@ enable_longjmp_breakpoint () } void -disable_longjmp_breakpoint () +disable_longjmp_breakpoint (void) { register struct breakpoint *b; @@ -3243,9 +3907,44 @@ disable_longjmp_breakpoint () } } +struct breakpoint * +create_thread_event_breakpoint (CORE_ADDR address) +{ + struct breakpoint *b; + struct symtab_and_line sal; + char addr_string[80]; /* Surely an addr can't be longer than that. */ + + INIT_SAL (&sal); /* initialize to zeroes */ + sal.pc = address; + sal.section = find_pc_overlay (sal.pc); + if ((b = set_raw_breakpoint (sal)) == NULL) + return NULL; + + b->number = internal_breakpoint_number--; + b->disposition = donttouch; + b->type = bp_thread_event; /* XXX: do we need a new type? + bp_thread_event */ + b->enable = enabled; + /* addr_string has to be used or breakpoint_re_set will delete me. */ + sprintf (addr_string, "*0x%s", paddr (b->address)); + b->addr_string = xstrdup (addr_string); + + return b; +} + +void +remove_thread_event_breakpoints (void) +{ + struct breakpoint *b, *temp; + + ALL_BREAKPOINTS_SAFE (b, temp) + if (b->type == bp_thread_event) + delete_breakpoint (b); +} + #ifdef SOLIB_ADD void -remove_solib_event_breakpoints () +remove_solib_event_breakpoints (void) { register struct breakpoint *b, *temp; @@ -3254,9 +3953,8 @@ remove_solib_event_breakpoints () delete_breakpoint (b); } -void -create_solib_event_breakpoint (address) - CORE_ADDR address; +struct breakpoint * +create_solib_event_breakpoint (CORE_ADDR address) { struct breakpoint *b; struct symtab_and_line sal; @@ -3268,11 +3966,15 @@ create_solib_event_breakpoint (address) b->number = internal_breakpoint_number--; b->disposition = donttouch; b->type = bp_shlib_event; + + return b; } +/* Disable any breakpoints that are on code in shared libraries. Only + apply to enabled breakpoints, disabled ones can just stay disabled. */ + void -disable_breakpoints_in_shlibs (silent) - int silent; +disable_breakpoints_in_shlibs (int silent) { struct breakpoint *b; int disabled_shlib_breaks = 0; @@ -3283,8 +3985,7 @@ disable_breakpoints_in_shlibs (silent) #if defined (PC_SOLIB) if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) && - (b->enable != shlib_disabled) && - (b->enable != call_disabled) && + b->enable == enabled && !b->duplicate && PC_SOLIB (b->address)) { @@ -3294,21 +3995,19 @@ disable_breakpoints_in_shlibs (silent) if (!disabled_shlib_breaks) { target_terminal_ours_for_output (); - printf_filtered ("Temporarily disabling shared library breakpoints:\n"); + warning ("Temporarily disabling shared library breakpoints:"); } disabled_shlib_breaks = 1; - printf_filtered ("%d ", b->number); + warning ("breakpoint #%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 () +re_enable_breakpoints_in_shlibs (void) { struct breakpoint *b; @@ -3327,19 +4026,13 @@ re_enable_breakpoints_in_shlibs () #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; +solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, + char *cond_string, enum bptype bp_kind) { struct breakpoint *b; struct symtabs_and_lines sals; - struct symtab_and_line sal; struct cleanup *old_chain; struct cleanup *canonical_strings_chain = NULL; - int i; char *addr_start = hookname; char *addr_end = NULL; char **canonical = (char **) NULL; @@ -3358,20 +4051,20 @@ create_solib_load_unload_event_breakpoint (hookname, tempflag, dll_pathname, con } if (sals.nelts != 1) { - warning ("Unable to set a unique breakpoint on dynamic linker callback."); + warning ("Unable to set unique breakpoint on dynamic linker callback."); warning ("GDB will be unable to track shl_load/shl_unload calls"); return; } - /* Make sure that all storage allocated in decode_line_1 gets freed in case - the following errors out. */ - old_chain = make_cleanup (free, sals.sals); + /* Make sure that all storage allocated in decode_line_1 gets freed + in case the following errors out. */ + old_chain = make_cleanup (xfree, sals.sals); if (canonical != (char **) NULL) { - make_cleanup (free, canonical); + make_cleanup (xfree, canonical); canonical_strings_chain = make_cleanup (null_cleanup, 0); if (canonical[0] != NULL) - make_cleanup (free, canonical[0]); + make_cleanup (xfree, canonical[0]); } resolve_sal_pc (&sals.sals[0]); @@ -3384,7 +4077,8 @@ create_solib_load_unload_event_breakpoint (hookname, tempflag, dll_pathname, con 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->cond_string = (cond_string == NULL) ? + NULL : savestring (cond_string, strlen (cond_string)); b->thread = thread; if (canonical != (char **) NULL && canonical[0] != NULL) @@ -3409,38 +4103,24 @@ create_solib_load_unload_event_breakpoint (hookname, tempflag, dll_pathname, con } 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_event_breakpoint (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); + solib_load_unload_1 (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_unload_event_breakpoint (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); + solib_load_unload_1 (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; +create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, + enum bptype bp_kind) { struct symtab_and_line sal; struct breakpoint *b; @@ -3455,7 +4135,8 @@ create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind) set_breakpoint_count (breakpoint_count + 1); b->number = breakpoint_count; b->cond = NULL; - b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); + b->cond_string = (cond_string == NULL) ? + NULL : savestring (cond_string, strlen (cond_string)); b->thread = thread; b->addr_string = NULL; b->enable = enabled; @@ -3468,25 +4149,19 @@ create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind) } void -create_fork_event_catchpoint (tempflag, cond_string) - int tempflag; - char *cond_string; +create_fork_event_catchpoint (int tempflag, char *cond_string) { create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); } void -create_vfork_event_catchpoint (tempflag, cond_string) - int tempflag; - char *cond_string; +create_vfork_event_catchpoint (int tempflag, char *cond_string) { create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); } void -create_exec_event_catchpoint (tempflag, cond_string) - int tempflag; - char *cond_string; +create_exec_event_catchpoint (int tempflag, char *cond_string) { struct symtab_and_line sal; struct breakpoint *b; @@ -3501,7 +4176,8 @@ create_exec_event_catchpoint (tempflag, cond_string) 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->cond_string = (cond_string == NULL) ? + NULL : savestring (cond_string, strlen (cond_string)); b->thread = thread; b->addr_string = NULL; b->enable = enabled; @@ -3513,7 +4189,7 @@ create_exec_event_catchpoint (tempflag, cond_string) } static int -hw_breakpoint_used_count () +hw_breakpoint_used_count (void) { register struct breakpoint *b; int i = 0; @@ -3528,9 +4204,7 @@ hw_breakpoint_used_count () } static int -hw_watchpoint_used_count (type, other_type_used) - enum bptype type; - int *other_type_used; +hw_watchpoint_used_count (enum bptype type, int *other_type_used) { register struct breakpoint *b; int i = 0; @@ -3552,16 +4226,14 @@ hw_watchpoint_used_count (type, other_type_used) return i; } -/* Call this after hitting the longjmp() breakpoint. Use this to set a new - breakpoint at the target of the jmp_buf. +/* 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... */ + 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; +set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_info *frame) { register struct breakpoint *b; @@ -3580,7 +4252,7 @@ set_longjmp_resume_breakpoint (pc, frame) } void -disable_watchpoints_before_interactive_call_start () +disable_watchpoints_before_interactive_call_start (void) { struct breakpoint *b; @@ -3600,7 +4272,7 @@ disable_watchpoints_before_interactive_call_start () } void -enable_watchpoints_after_interactive_call_stop () +enable_watchpoints_after_interactive_call_stop (void) { struct breakpoint *b; @@ -3625,10 +4297,8 @@ enable_watchpoints_after_interactive_call_stop () 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; +set_momentary_breakpoint (struct symtab_and_line sal, struct frame_info *frame, + enum bptype type) { register struct breakpoint *b; b = set_raw_breakpoint (sal); @@ -3650,10 +4320,16 @@ set_momentary_breakpoint (sal, frame, type) /* Tell the user we have just set a breakpoint B. */ static void -mention (b) - struct breakpoint *b; +mention (struct breakpoint *b) { int say_where = 0; +#ifdef UI_OUT + struct cleanup *old_chain; + struct ui_stream *stb; + + stb = ui_out_stream_new (uiout); + old_chain = make_cleanup_ui_out_stream_delete (stb); +#endif /* UI_OUT */ /* FIXME: This is misplaced; mention() is called by things (like hitting a watchpoint) other than breakpoint creation. It should be possible to @@ -3662,12 +4338,33 @@ mention (b) delete_breakpoint_hook and so on. */ if (create_breakpoint_hook) create_breakpoint_hook (b); + breakpoint_create_event (b->number); switch (b->type) { case bp_none: printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); break; +#ifdef UI_OUT + case bp_watchpoint: + ui_out_text (uiout, "Watchpoint "); + ui_out_list_begin (uiout, "wpt"); + ui_out_field_int (uiout, "number", b->number); + ui_out_text (uiout, ": "); + print_expression (b->exp, stb->stream); + ui_out_field_stream (uiout, "exp", stb); + ui_out_list_end (uiout); + break; + case bp_hardware_watchpoint: + ui_out_text (uiout, "Hardware watchpoint "); + ui_out_list_begin (uiout, "wpt"); + ui_out_field_int (uiout, "number", b->number); + ui_out_text (uiout, ": "); + print_expression (b->exp, stb->stream); + ui_out_field_stream (uiout, "exp", stb); + ui_out_list_end (uiout); + break; +#else case bp_watchpoint: printf_filtered ("Watchpoint %d: ", b->number); print_expression (b->exp, gdb_stdout); @@ -3676,19 +4373,56 @@ mention (b) printf_filtered ("Hardware watchpoint %d: ", b->number); print_expression (b->exp, gdb_stdout); break; +#endif +#ifdef UI_OUT + case bp_read_watchpoint: + ui_out_text (uiout, "Hardware read watchpoint "); + ui_out_list_begin (uiout, "hw-rwpt"); + ui_out_field_int (uiout, "number", b->number); + ui_out_text (uiout, ": "); + print_expression (b->exp, stb->stream); + ui_out_field_stream (uiout, "exp", stb); + ui_out_list_end (uiout); + break; + case bp_access_watchpoint: + ui_out_text (uiout, "Hardware access (read/write) watchpoint "); + ui_out_list_begin (uiout, "hw-awpt"); + ui_out_field_int (uiout, "number", b->number); + ui_out_text (uiout, ": "); + print_expression (b->exp, stb->stream); + ui_out_field_stream (uiout, "exp", stb); + ui_out_list_end (uiout); + break; +#else case bp_read_watchpoint: printf_filtered ("Hardware read watchpoint %d: ", b->number); print_expression (b->exp, gdb_stdout); break; case bp_access_watchpoint: - printf_filtered ("Hardware access (read/write) watchpoint %d: ", b->number); + printf_filtered ("Hardware access (read/write) watchpoint %d: ", + b->number); print_expression (b->exp, gdb_stdout); break; +#endif case bp_breakpoint: +#ifdef UI_OUT + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + { + say_where = 0; + break; + } +#endif printf_filtered ("Breakpoint %d", b->number); say_where = 1; break; case bp_hardware_breakpoint: +#ifdef UI_OUT + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + { + say_where = 0; + break; + } +#endif printf_filtered ("Hardware assisted breakpoint %d", b->number); say_where = 1; break; @@ -3697,7 +4431,8 @@ mention (b) printf_filtered ("Catchpoint %d (%s %s)", b->number, (b->type == bp_catch_load) ? "load" : "unload", - (b->dll_pathname != NULL) ? b->dll_pathname : ""); + (b->dll_pathname != NULL) ? + b->dll_pathname : ""); break; case bp_catch_fork: case bp_catch_vfork: @@ -3725,6 +4460,7 @@ mention (b) case bp_call_dummy: case bp_watchpoint_scope: case bp_shlib_event: + case bp_thread_event: break; } if (say_where) @@ -3740,111 +4476,146 @@ mention (b) TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); } +#ifdef UI_OUT + do_cleanups (old_chain); +#endif +#ifdef UI_OUT + if (interpreter_p && strcmp (interpreter_p, "mi") == 0) + return; +#endif printf_filtered ("\n"); } -/* 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. */ +/* Add SALS.nelts breakpoints to the breakpoint table. For each + SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], + COND[i] and COND_STRING[i] values. + + NOTE: If the function succeeds, the caller is expected to cleanup + the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the + array contents). If the function fails (error() is called), the + caller is expected to cleanups both the ADDR_STRING, COND_STRING, + COND and SALS arrays and each of those arrays contents. */ static void -break_command_1 (arg, flag, from_tty) - char *arg; - int flag, from_tty; +create_breakpoints (struct symtabs_and_lines sals, char **addr_string, + struct expression **cond, char **cond_string, + enum bptype type, enum bpdisp disposition, + int thread, int ignore_count, int from_tty) { - int 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; + if (type == bp_hardware_breakpoint) + { + int i = hw_breakpoint_used_count (); + int target_resources_ok = + TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, + i + sals.nelts, 0); + if (target_resources_ok == 0) + error ("No hardware breakpoint support in the target."); + else if (target_resources_ok < 0) + error ("Hardware breakpoints used exceeds limit."); + } - INIT_SAL (&sal); /* initialize to zeroes */ + /* Now set all the breakpoints. */ + { + int i; + for (i = 0; i < sals.nelts; i++) + { + struct breakpoint *b; + struct symtab_and_line sal = sals.sals[i]; + + if (from_tty) + describe_other_breakpoints (sal.pc, sal.section); + + b = set_raw_breakpoint (sal); + set_breakpoint_count (breakpoint_count + 1); + b->number = breakpoint_count; + b->type = type; + b->cond = cond[i]; + b->thread = thread; + b->addr_string = addr_string[i]; + b->cond_string = cond_string[i]; + b->ignore_count = ignore_count; + b->enable = enabled; + b->disposition = disposition; + mention (b); + } + } +} - /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ +/* Parse ARG which is assumed to be a SAL specification possibly + followed by conditionals. On return, SALS contains an array of SAL + addresses found. ADDR_STRING contains a vector of (canonical) + address strings. ARG points to the end of the SAL. */ - if (!arg || (arg[0] == 'i' && arg[1] == 'f' - && (arg[2] == ' ' || arg[2] == '\t'))) +void +parse_breakpoint_sals (char **address, + struct symtabs_and_lines *sals, + char ***addr_string) +{ + char *addr_start = *address; + *addr_string = NULL; + /* If no arg given, or if first arg is 'if ', use the default + breakpoint. */ + if ((*address) == NULL + || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) { if (default_breakpoint_valid) { - sals.sals = (struct symtab_and_line *) + struct symtab_and_line sal; + INIT_SAL (&sal); /* initialize to zeroes */ + sals->sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); sal.pc = default_breakpoint_address; sal.line = default_breakpoint_line; sal.symtab = default_breakpoint_symtab; sal.section = find_pc_overlay (sal.pc); - sals.sals[0] = sal; - sals.nelts = 1; + 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); + || (strchr ("+-", (*address)[0]) != NULL))) + *sals = decode_line_1 (address, 1, default_breakpoint_symtab, + default_breakpoint_line, addr_string); else - sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, &canonical); - - addr_end = arg; + *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); } - - 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) + /* For any SAL that didn't have a canonical string, fill one in. */ + if (sals->nelts > 0 && *addr_string == NULL) + *addr_string = xcalloc (sals->nelts, sizeof (char **)); + if (addr_start != (*address)) { - make_cleanup (free, canonical); - canonical_strings_chain = make_cleanup (null_cleanup, 0); - for (i = 0; i < sals.nelts; i++) + int i; + for (i = 0; i < sals->nelts; i++) { - if (canonical[i] != NULL) - make_cleanup (free, canonical[i]); + /* Add the string if not present. */ + if ((*addr_string)[i] == NULL) + (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); } } +} - 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; +/* Convert each SAL into a real PC. Verify that the PC can be + inserted as a breakpoint. If it can't throw an error. */ - resolve_sal_pc (&sals.sals[i]); +void +breakpoint_sals_to_pc (struct symtabs_and_lines *sals, + char *address) +{ + int i; + for (i = 0; i < sals->nelts; i++) + { + resolve_sal_pc (&sals->sals[i]); /* It's possible for the PC to be nonzero, but still an illegal value on some targets. @@ -3859,15 +4630,98 @@ break_command_1 (arg, flag, from_tty) Give the target a chance to bless sals.sals[i].pc before we try to make a breakpoint for it. */ - if (PC_REQUIRES_RUN_BEFORE_USE (sals.sals[i].pc)) + if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) { - error ("Cannot break on %s without a running program.", addr_start); + if (address == NULL) + error ("Cannot break without a running program."); + else + error ("Cannot break on %s without a running program.", + address); } + } +} + +/* Set a breakpoint according to ARG (function, linenum or *address) + flag: first bit : 0 non-temporary, 1 temporary. + second bit : 0 normal breakpoint, 1 hardware breakpoint. */ + +static void +break_command_1 (char *arg, int flag, int from_tty) +{ + int tempflag, hardwareflag; + struct symtabs_and_lines sals; + register struct expression **cond = 0; + /* Pointers in arg to the start, and one past the end, of the + condition. */ + char **cond_string = (char **) NULL; + char *addr_start = arg; + char **addr_string; + struct cleanup *old_chain; + struct cleanup *breakpoint_chain = NULL; + int i; + int thread = -1; + int ignore_count = 0; + + hardwareflag = flag & BP_HARDWAREFLAG; + tempflag = flag & BP_TEMPFLAG; + + sals.sals = NULL; + sals.nelts = 0; + addr_string = NULL; + parse_breakpoint_sals (&arg, &sals, &addr_string); + + if (!sals.nelts) + return; + + /* Create a chain of things that always need to be cleaned up. */ + old_chain = make_cleanup (null_cleanup, 0); + + /* Make sure that all storage allocated to SALS gets freed. */ + make_cleanup (xfree, sals.sals); + + /* Cleanup the addr_string array but not its contents. */ + make_cleanup (xfree, addr_string); + + /* Allocate space for all the cond expressions. */ + cond = xcalloc (sals.nelts, sizeof (struct expression *)); + make_cleanup (xfree, cond); + + /* Allocate space for all the cond strings. */ + cond_string = xcalloc (sals.nelts, sizeof (char **)); + make_cleanup (xfree, cond_string); + + /* ----------------------------- SNIP ----------------------------- + Anything added to the cleanup chain beyond this point is assumed + to be part of a breakpoint. If the breakpoint create succeeds + then the memory is not reclaimed. */ + breakpoint_chain = make_cleanup (null_cleanup, 0); + + /* Mark the contents of the addr_string for cleanup. These go on + the breakpoint_chain and only occure if the breakpoint create + fails. */ + for (i = 0; i < sals.nelts; i++) + { + if (addr_string[i] != NULL) + make_cleanup (xfree, addr_string[i]); + } - tok = arg; + /* Resolve all line numbers to PC's and verify that the addresses + are ok for the target. */ + breakpoint_sals_to_pc (&sals, addr_start); + /* Verify that condition can be parsed, before setting any + breakpoints. Allocate a separate condition expression for each + breakpoint. */ + thread = -1; /* No specific thread yet */ + for (i = 0; i < sals.nelts; i++) + { + char *tok = arg; while (tok && *tok) { + char *end_tok; + int toklen; + char *cond_start = NULL; + char *cond_end = NULL; while (*tok == ' ' || *tok == '\t') tok++; @@ -3881,8 +4735,11 @@ break_command_1 (arg, flag, from_tty) 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[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); + make_cleanup (xfree, cond[i]); cond_end = tok; + cond_string[i] = savestring (cond_start, cond_end - cond_start); + make_cleanup (xfree, cond_string[i]); } else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) { @@ -3900,69 +4757,157 @@ break_command_1 (arg, flag, from_tty) 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."); + create_breakpoints (sals, addr_string, cond, cond_string, + hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, + tempflag ? del : donttouch, + thread, ignore_count, from_tty); + + if (sals.nelts > 1) + { + warning ("Multiple breakpoints were set."); + warning ("Use the \"delete\" command to delete unwanted breakpoints."); } + /* That's it. Discard the cleanups for data inserted into the + breakpoint. */ + discard_cleanups (breakpoint_chain); + /* But cleanup everything else. */ + do_cleanups (old_chain); +} - /* Remove the canonical strings from the cleanup, they are needed below. */ - if (canonical != (char **) NULL) - discard_cleanups (canonical_strings_chain); +/* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, + linenum or *address) with COND and IGNORE_COUNT. */ - /* Now set all the breakpoints. */ - for (i = 0; i < sals.nelts; i++) - { - sal = sals.sals[i]; +struct captured_breakpoint_args + { + char *address; + char *condition; + int hardwareflag; + int tempflag; + int thread; + int ignore_count; + }; - if (from_tty) - describe_other_breakpoints (sal.pc, sal.section); +static int +do_captured_breakpoint (void *data) +{ + struct captured_breakpoint_args *args = data; + struct symtabs_and_lines sals; + register struct expression **cond; + struct cleanup *old_chain; + struct cleanup *breakpoint_chain = NULL; + int i; + char **addr_string; + char **cond_string; - 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; + char *address_end; - /* 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); + /* Parse the source and lines spec. Delay check that the expression + didn't contain trailing garbage until after cleanups are in + place. */ + sals.sals = NULL; + sals.nelts = 0; + address_end = args->address; + addr_string = NULL; + parse_breakpoint_sals (&address_end, &sals, &addr_string); - b->enable = enabled; - b->disposition = tempflag ? del : donttouch; - mention (b); + if (!sals.nelts) + return GDB_RC_NONE; + + /* Create a chain of things at always need to be cleaned up. */ + old_chain = make_cleanup (null_cleanup, 0); + + /* Always have a addr_string array, even if it is empty. */ + make_cleanup (xfree, addr_string); + + /* Make sure that all storage allocated to SALS gets freed. */ + make_cleanup (xfree, sals.sals); + + /* Allocate space for all the cond expressions. */ + cond = xcalloc (sals.nelts, sizeof (struct expression *)); + make_cleanup (xfree, cond); + + /* Allocate space for all the cond strings. */ + cond_string = xcalloc (sals.nelts, sizeof (char **)); + make_cleanup (xfree, cond_string); + + /* ----------------------------- SNIP ----------------------------- + Anything added to the cleanup chain beyond this point is assumed + to be part of a breakpoint. If the breakpoint create goes + through then that memory is not cleaned up. */ + breakpoint_chain = make_cleanup (null_cleanup, 0); + + /* Mark the contents of the addr_string for cleanup. These go on + the breakpoint_chain and only occure if the breakpoint create + fails. */ + for (i = 0; i < sals.nelts; i++) + { + if (addr_string[i] != NULL) + make_cleanup (xfree, addr_string[i]); } - if (sals.nelts > 1) + /* Wait until now before checking for garbage at the end of the + address. That way cleanups can take care of freeing any + memory. */ + if (*address_end != '\0') + error ("Garbage %s following breakpoint address", address_end); + + /* Resolve all line numbers to PC's. */ + breakpoint_sals_to_pc (&sals, args->address); + + /* Verify that conditions can be parsed, before setting any + breakpoints. */ + for (i = 0; i < sals.nelts; i++) { - printf_filtered ("Multiple breakpoints were set.\n"); - printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); + if (args->condition != NULL) + { + char *tok = args->condition; + cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); + if (*tok != '\0') + error ("Garbage %s follows condition", tok); + make_cleanup (xfree, cond[i]); + cond_string[i] = xstrdup (args->condition); + } } + + create_breakpoints (sals, addr_string, cond, cond_string, + args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, + args->tempflag ? del : donttouch, + args->thread, args->ignore_count, 0/*from-tty*/); + + /* That's it. Discard the cleanups for data inserted into the + breakpoint. */ + discard_cleanups (breakpoint_chain); + /* But cleanup everything else. */ do_cleanups (old_chain); + return GDB_RC_OK; } +enum gdb_rc +gdb_breakpoint (char *address, char *condition, + int hardwareflag, int tempflag, + int thread, int ignore_count) +{ + struct captured_breakpoint_args args; + args.address = address; + args.condition = condition; + args.hardwareflag = hardwareflag; + args.tempflag = tempflag; + args.thread = thread; + args.ignore_count = ignore_count; + return catch_errors (do_captured_breakpoint, &args, + NULL, RETURN_MASK_ALL); +} + + static void -break_at_finish_at_depth_command_1 (arg, flag, from_tty) - char *arg; - int flag; - int from_tty; +break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) { struct frame_info *frame; CORE_ADDR low, high, selected_pc = 0; - char *extra_args, *level_arg, *addr_string; + char *extra_args = NULL; + char *level_arg; + char *addr_string; int extra_args_len = 0, if_arg = 0; if (!arg || @@ -4018,11 +4963,11 @@ break_at_finish_at_depth_command_1 (arg, flag, from_tty) { addr_string = (char *) xmalloc (26 + extra_args_len); if (extra_args_len) - sprintf (addr_string, "*0x%x %s", high, extra_args); + sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); else - sprintf (addr_string, "*0x%x", high); + sprintf (addr_string, "*0x%s", paddr_nz (high)); break_command_1 (addr_string, flag, from_tty); - free (addr_string); + xfree (addr_string); } else error ("No function contains the specified address"); @@ -4033,17 +4978,14 @@ break_at_finish_at_depth_command_1 (arg, flag, from_tty) static void -break_at_finish_command_1 (arg, flag, from_tty) - char *arg; - int flag; - int from_tty; +break_at_finish_command_1 (char *arg, int flag, int from_tty) { char *addr_string, *break_string, *beg_addr_string; CORE_ADDR low, high; struct symtabs_and_lines sals; struct symtab_and_line sal; struct cleanup *old_chain; - char *extra_args; + char *extra_args = NULL; int extra_args_len = 0; int i, if_arg = 0; @@ -4055,7 +4997,7 @@ break_at_finish_command_1 (arg, flag, from_tty) if (selected_frame) { addr_string = (char *) xmalloc (15); - sprintf (addr_string, "*0x%x", selected_frame->pc); + sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc)); if (arg) if_arg = 1; } @@ -4094,8 +5036,8 @@ break_at_finish_command_1 (arg, flag, from_tty) sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, (char ***) NULL); - free (beg_addr_string); - old_chain = make_cleanup (free, sals.sals); + xfree (beg_addr_string); + old_chain = make_cleanup (xfree, sals.sals); for (i = 0; (i < sals.nelts); i++) { sal = sals.sals[i]; @@ -4103,19 +5045,19 @@ break_at_finish_command_1 (arg, flag, from_tty) { break_string = (char *) xmalloc (extra_args_len + 26); if (extra_args_len) - sprintf (break_string, "*0x%x %s", high, extra_args); + sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); else - sprintf (break_string, "*0x%x", high); + sprintf (break_string, "*0x%s", paddr_nz (high)); break_command_1 (break_string, flag, from_tty); - free (break_string); + xfree (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"); + warning ("Multiple breakpoints were set.\n"); + warning ("Use the \"delete\" command to delete unwanted breakpoints."); } do_cleanups (old_chain); } @@ -4124,8 +5066,7 @@ break_at_finish_command_1 (arg, flag, from_tty) /* Helper function for break_command_1 and disassemble_command. */ void -resolve_sal_pc (sal) - struct symtab_and_line *sal; +resolve_sal_pc (struct symtab_and_line *sal) { CORE_ADDR pc; @@ -4172,65 +5113,49 @@ resolve_sal_pc (sal) } void -break_command (arg, from_tty) - char *arg; - int from_tty; +break_command (char *arg, int from_tty) { break_command_1 (arg, 0, from_tty); } static void -break_at_finish_command (arg, from_tty) - char *arg; - int from_tty; +break_at_finish_command (char *arg, int from_tty) { break_at_finish_command_1 (arg, 0, from_tty); } static void -break_at_finish_at_depth_command (arg, from_tty) - char *arg; - int from_tty; +break_at_finish_at_depth_command (char *arg, int from_tty) { break_at_finish_at_depth_command_1 (arg, 0, from_tty); } void -tbreak_command (arg, from_tty) - char *arg; - int from_tty; +tbreak_command (char *arg, int from_tty) { break_command_1 (arg, BP_TEMPFLAG, from_tty); } static void -tbreak_at_finish_command (arg, from_tty) - char *arg; - int from_tty; +tbreak_at_finish_command (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; +hbreak_command (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; +thbreak_command (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; +stop_command (char *arg, int from_tty) { printf_filtered ("Specify the type of breakpoint to set.\n\ Usage: stop in \n\ @@ -4238,9 +5163,7 @@ Usage: stop in \n\ } static void -stopin_command (arg, from_tty) - char *arg; - int from_tty; +stopin_command (char *arg, int from_tty) { int badInput = 0; @@ -4251,9 +5174,9 @@ stopin_command (arg, from_tty) 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 */ + /* 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 == ':'); @@ -4273,9 +5196,7 @@ stopin_command (arg, from_tty) } static void -stopat_command (arg, from_tty) - char *arg; - int from_tty; +stopat_command (char *arg, int from_tty) { int badInput = 0; @@ -4307,12 +5228,11 @@ stopat_command (arg, from_tty) } /* ARGSUSED */ -/* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) */ +/* accessflag: hw_write: watch write, + hw_read: watch read, + hw_access: watch access (read or write) */ static void -watch_command_1 (arg, accessflag, from_tty) - char *arg; - int accessflag; - int from_tty; +watch_command_1 (char *arg, int accessflag, int from_tty) { struct breakpoint *b; struct symtab_and_line sal; @@ -4364,9 +5284,9 @@ watch_command_1 (arg, accessflag, from_tty) if (*tok) error ("Junk at end of command."); - if (accessflag == 1) + if (accessflag == hw_read) bp_type = bp_read_watchpoint; - else if (accessflag == 2) + else if (accessflag == hw_access) bp_type = bp_access_watchpoint; else bp_type = bp_hardware_watchpoint; @@ -4377,12 +5297,14 @@ watch_command_1 (arg, accessflag, from_tty) 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); + 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."); + error ("Target does not support this type of hardware watchpoint."); + if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) - error ("Target resources have been allocated for other types of watchpoints."); + error ("Target can only support one kind of HW watchpoint at a time."); } #if defined(HPUXHPPA) @@ -4480,33 +5402,80 @@ watch_command_1 (arg, accessflag, from_tty) 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)) +#define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ + ((BYTE_SIZE) <= (REGISTER_SIZE)) +#endif + +#if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) +#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ + (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) #endif static int -can_use_hardware_watchpoint (v) - struct value *v; +can_use_hardware_watchpoint (struct value *v) { int found_memory_cnt = 0; + struct value *head = v; /* Did the user specifically forbid us to use hardware watchpoints? */ if (!can_use_hw_watchpoints) return 0; - /* Make sure 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. */ + /* Make sure that the value of the expression depends only upon + memory contents, and values computed from them within GDB. If we + find any register references or function calls, we can't use a + hardware watchpoint. + + The idea here is that evaluating an expression generates a series + of values, one holding the value of every subexpression. (The + expression a*b+c has five subexpressions: a, b, a*b, c, and + a*b+c.) GDB's values hold almost enough information to establish + the criteria given above --- they identify memory lvalues, + register lvalues, computed values, etcetera. So we can evaluate + the expression, and then scan the chain of values that leaves + behind to decide whether we can detect any possible change to the + expression's final value using only hardware watchpoints. + + However, I don't think that the values returned by inferior + function calls are special in any way. So this function may not + notice that an expression involving an inferior function call + can't be watched with hardware watchpoints. FIXME. */ for (; v; v = v->next) { - if (v->lval == lval_memory) + if (VALUE_LVAL (v) == lval_memory) { - if (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (TYPE_LENGTH (VALUE_TYPE (v)))) - found_memory_cnt++; + if (VALUE_LAZY (v)) + /* A lazy memory lvalue is one that GDB never needed to fetch; + we either just used its address (e.g., `a' in `a.b') or + we never needed it at all (e.g., `a' in `a,b'). */ + ; + else + { + /* Ahh, memory we actually used! Check if we can cover + it with hardware watchpoints. */ + struct type *vtype = check_typedef (VALUE_TYPE (v)); + + /* We only watch structs and arrays if user asked for it + explicitly, never if they just happen to appear in a + middle of some value chain. */ + if (v == head + || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT + && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) + { + CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); + int len = TYPE_LENGTH (VALUE_TYPE (v)); + + if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) + return 0; + else + found_memory_cnt++; + } + } } else if (v->lval != not_lval && v->modifiable == 0) - return 0; + return 0; /* ??? What does this represent? */ + else if (v->lval == lval_register) + return 0; /* cannot watch a register with a HW watchpoint */ } /* The expression itself looks suitable for using a hardware @@ -4514,28 +5483,43 @@ can_use_hardware_watchpoint (v) return found_memory_cnt; } +#ifdef UI_OUT +void +watch_command_wrapper (char *arg, int from_tty) +{ + watch_command (arg, from_tty); +} +#endif static void -watch_command (arg, from_tty) - char *arg; - int from_tty; +watch_command (char *arg, int from_tty) { - watch_command_1 (arg, 0, from_tty); + watch_command_1 (arg, hw_write, from_tty); } +#ifdef UI_OUT +void +rwatch_command_wrapper (char *arg, int from_tty) +{ + rwatch_command (arg, from_tty); +} +#endif static void -rwatch_command (arg, from_tty) - char *arg; - int from_tty; +rwatch_command (char *arg, int from_tty) { - watch_command_1 (arg, 1, from_tty); + watch_command_1 (arg, hw_read, from_tty); } +#ifdef UI_OUT +void +awatch_command_wrapper (char *arg, int from_tty) +{ + awatch_command (arg, from_tty); +} +#endif static void -awatch_command (arg, from_tty) - char *arg; - int from_tty; +awatch_command (char *arg, int from_tty) { - watch_command_1 (arg, 2, from_tty); + watch_command_1 (arg, hw_access, from_tty); } @@ -4546,28 +5530,26 @@ awatch_command (arg, from_tty) cmd_continuation pointer, to complete the until command. It takes care of cleaning up the temporary breakpoints set up by the until command. */ -void -until_break_command_continuation (arg) - struct continuation_arg *arg; +static void +until_break_command_continuation (struct continuation_arg *arg) { - /* Do all the exec cleanups, which at this point should only be the - one set up in the first part of the until_break_command - function. */ - do_exec_cleanups (ALL_CLEANUPS); + struct cleanup *cleanups; + + cleanups = (struct cleanup *) arg->data.pointer; + do_exec_cleanups (cleanups); } /* ARGSUSED */ void -until_break_command (arg, from_tty) - char *arg; - int from_tty; +until_break_command (char *arg, int from_tty) { struct symtabs_and_lines sals; struct symtab_and_line sal; struct frame_info *prev_frame = get_prev_frame (selected_frame); struct breakpoint *breakpoint; struct cleanup *old_chain; - struct continuation_arg *arg1, *arg2; + struct continuation_arg *arg1; + clear_proceed_status (); @@ -4578,13 +5560,14 @@ until_break_command (arg, from_tty) 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); + 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 */ + xfree (sals.sals); /* malloc'd, so freed */ if (*arg) error ("Junk at end of arguments."); @@ -4593,10 +5576,10 @@ until_break_command (arg, from_tty) breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); - if (!async_p || !target_has_async) - old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); + if (!event_loop_p || !target_can_async_p ()) + old_chain = make_cleanup_delete_breakpoint (breakpoint); else - make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); + old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); /* If we are running asynchronously, and the target supports async execution, we are not waiting for the target to stop, in the call @@ -4605,13 +5588,18 @@ until_break_command (arg, from_tty) where we get a chance to do that is in fetch_inferior_event, so we must set things up for that. */ - if (async_p && target_has_async) + if (event_loop_p && target_can_async_p ()) { - /* In this case we don't need args for the continuation, because - all it needs to do is do the cleanups in the - exec_cleanup_chain, which will be only those inserted by this - function. We can get away by using ALL_CLEANUPS. */ - add_continuation (until_break_command_continuation, NULL); + /* In this case the arg for the continuation is just the point + in the exec_cleanups chain from where to start doing + cleanups, because all the continuation does is the cleanups in + the exec_cleanup_chain. */ + arg1 = + (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); + arg1->next = NULL; + arg1->data.pointer = old_chain; + + add_continuation (until_break_command_continuation, arg1); } /* Keep within the current frame */ @@ -4621,16 +5609,16 @@ until_break_command (arg, from_tty) sal = find_pc_line (prev_frame->pc, 0); sal.pc = prev_frame->pc; breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); - if (!async_p || !target_has_async) - make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); + if (!event_loop_p || !target_can_async_p ()) + make_cleanup_delete_breakpoint (breakpoint); else - make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); + make_exec_cleanup_delete_breakpoint (breakpoint); } proceed (-1, TARGET_SIGNAL_DEFAULT, 0); /* Do the cleanups now, anly if we are not running asynchronously, of if we are, but the target is still synchronous. */ - if (!async_p || !target_has_async) + if (!event_loop_p || !target_can_async_p ()) do_cleanups (old_chain); } @@ -4638,23 +5626,22 @@ until_break_command (arg, from_tty) /* These aren't used; I don't konw what they were for. */ /* Set a breakpoint at the catch clause for NAME. */ static int -catch_breakpoint (name) - char *name; +catch_breakpoint (char *name) { } static int -disable_catch_breakpoint () +disable_catch_breakpoint (void) { } static int -delete_catch_breakpoint () +delete_catch_breakpoint (void) { } static int -enable_catch_breakpoint () +enable_catch_breakpoint (void) { } #endif /* 0 */ @@ -4674,9 +5661,7 @@ struct sal_chain /* For each catch clause identified in ARGS, run FUNCTION with that clause as an argument. */ static struct symtabs_and_lines -map_catch_names (args, function) - char *args; - int (*function) (); +map_catch_names (char *args, int (*function) ()) { register char *p = args; register char *p1; @@ -4735,8 +5720,7 @@ map_catch_names (args, function) /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ static struct symtabs_and_lines -get_catch_sals (this_level_only) - int this_level_only; +get_catch_sals (int this_level_only) { register struct blockvector *bl; register struct block *block; @@ -4806,7 +5790,8 @@ get_catch_sals (this_level_only) 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); + next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), + 0); sal_chain = next; } } @@ -4847,8 +5832,7 @@ get_catch_sals (this_level_only) } static void -ep_skip_leading_whitespace (s) - char **s; +ep_skip_leading_whitespace (char **s) { if ((s == NULL) || (*s == NULL)) return; @@ -4860,9 +5844,9 @@ ep_skip_leading_whitespace (s) 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; +ep_find_event_name_end (char *arg) { char *s = arg; char *event_name_end = NULL; @@ -4893,9 +5877,9 @@ ep_find_event_name_end (arg) 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; +ep_parse_optional_if_clause (char **arg) { char *cond_string; @@ -4927,8 +5911,7 @@ ep_parse_optional_if_clause (arg) 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; +ep_parse_optional_filename (char **arg) { static char filename[1024]; char *arg_p = *arg; @@ -4962,14 +5945,13 @@ typedef enum } catch_fork_kind; -static void catch_fork_command_1 PARAMS ((catch_fork_kind fork_kind, char *arg, int tempflag, int from_tty)); +#if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) +static void catch_fork_command_1 (catch_fork_kind fork_kind, + char *arg, int tempflag, int from_tty); static void -catch_fork_command_1 (fork_kind, arg, tempflag, from_tty) - catch_fork_kind fork_kind; - char *arg; - int tempflag; - int from_tty; +catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, + int from_tty) { char *cond_string = NULL; @@ -5000,12 +5982,11 @@ catch_fork_command_1 (fork_kind, arg, tempflag, from_tty) break; } } +#endif +#if defined(CHILD_INSERT_EXEC_CATCHPOINT) static void -catch_exec_command_1 (arg, tempflag, from_tty) - char *arg; - int tempflag; - int from_tty; +catch_exec_command_1 (char *arg, int tempflag, int from_tty) { char *cond_string = NULL; @@ -5025,13 +6006,11 @@ catch_exec_command_1 (arg, tempflag, from_tty) and enable reporting of such events. */ create_exec_event_catchpoint (tempflag, cond_string); } +#endif #if defined(SOLIB_ADD) static void -catch_load_command_1 (arg, tempflag, from_tty) - char *arg; - int tempflag; - int from_tty; +catch_load_command_1 (char *arg, int tempflag, int from_tty) { char *dll_pathname = NULL; char *cond_string = NULL; @@ -5068,14 +6047,12 @@ catch_load_command_1 (arg, tempflag, from_tty) /* 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); + 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; +catch_unload_command_1 (char *arg, int tempflag, int from_tty) { char *dll_pathname = NULL; char *cond_string = NULL; @@ -5112,7 +6089,8 @@ catch_unload_command_1 (arg, tempflag, from_tty) /* 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); + SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, + dll_pathname, cond_string); } #endif /* SOLIB_ADD */ @@ -5122,14 +6100,11 @@ catch_unload_command_1 (arg, tempflag, from_tty) 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; +create_exception_catchpoint (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? */ @@ -5139,7 +6114,8 @@ create_exception_catchpoint (tempflag, cond_string, ex_event, 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->cond_string = (cond_string == NULL) ? + NULL : savestring (cond_string, strlen (cond_string)); b->thread = thread; b->addr_string = NULL; b->enable = enabled; @@ -5163,11 +6139,8 @@ create_exception_catchpoint (tempflag, cond_string, ex_event, sal) /* 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; +catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, + int tempflag, int from_tty) { char *cond_string = NULL; struct symtab_and_line *sal = NULL; @@ -5193,7 +6166,7 @@ catch_exception_command_1 (ex_event, arg, tempflag, from_tty) 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 */ + return; /* something went wrong with setting up callbacks */ } else { @@ -5207,9 +6180,9 @@ catch_exception_command_1 (ex_event, arg, tempflag, from_tty) { /* 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"); + warning ("Unsupported with this platform/compiler combination."); + warning ("Perhaps you can achieve the effect you want by setting"); + warning ("a breakpoint on __raise_exception()."); } } } @@ -5218,8 +6191,7 @@ catch_exception_command_1 (ex_event, arg, tempflag, from_tty) inside a catch_errors */ static int -cover_target_enable_exception_callback (arg) - PTR arg; +cover_target_enable_exception_callback (PTR arg) { args_for_catchpoint_enable *args = arg; struct symtab_and_line *sal; @@ -5247,10 +6219,7 @@ cover_target_enable_exception_callback (arg) static void -handle_gnu_4_16_catch_command (arg, tempflag, from_tty) - char *arg; - int tempflag; - int from_tty; +handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty) { /* First, translate ARG into something we can deal with in terms of breakpoints. */ @@ -5319,12 +6288,13 @@ handle_gnu_4_16_catch_command (arg, tempflag, from_tty) 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. */ + + /* Important -- this is an ordinary breakpoint. For platforms + with callback support for exceptions, + create_exception_catchpoint() will create special bp types + (bp_catch_catch and bp_catch_throw), and there is code in + insert_breakpoints() and elsewhere that depends on that. */ + b->type = bp_breakpoint; b->cond = cond; b->enable = enabled; @@ -5335,18 +6305,17 @@ handle_gnu_4_16_catch_command (arg, tempflag, from_tty) if (sals.nelts > 1) { - printf_unfiltered ("Multiple breakpoints were set.\n"); - printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); + warning ("Multiple breakpoints were set."); + warning ("Use the \"delete\" command to delete unwanted breakpoints."); } - free ((PTR) sals.sals); + xfree (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; +create_temp_exception_breakpoint (CORE_ADDR pc) { struct symtab_and_line sal; struct breakpoint *b; @@ -5370,10 +6339,7 @@ create_temp_exception_breakpoint (pc) #endif static void -catch_command_1 (arg, tempflag, from_tty) - char *arg; - int tempflag; - int from_tty; +catch_command_1 (char *arg, int tempflag, int from_tty) { /* The first argument may be an event name, such as "start" or "load". @@ -5407,11 +6373,13 @@ catch_command_1 (arg, tempflag, from_tty) } else if (strncmp (arg1_start, "catch", arg1_length) == 0) { - catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, tempflag, from_tty); + 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); + catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, + tempflag, from_tty); } else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) { @@ -5494,8 +6462,7 @@ catch_command_1 (arg, tempflag, from_tty) /* Used by the gui, could be made a worker for other things. */ struct breakpoint * -set_breakpoint_sal (sal) - struct symtab_and_line sal; +set_breakpoint_sal (struct symtab_and_line sal) { struct breakpoint *b; b = set_raw_breakpoint (sal); @@ -5511,51 +6478,42 @@ set_breakpoint_sal (sal) /* These aren't used; I don't know what they were for. */ /* Disable breakpoints on all catch clauses described in ARGS. */ static void -disable_catch (args) - char *args; +disable_catch (char *args) { /* Map the disable command to catch clauses described in ARGS. */ } /* Enable breakpoints on all catch clauses described in ARGS. */ static void -enable_catch (args) - char *args; +enable_catch (char *args) { /* Map the disable command to catch clauses described in ARGS. */ } /* Delete breakpoints on all catch clauses in the active scope. */ static void -delete_catch (args) - char *args; +delete_catch (char *args) { /* Map the delete command to catch clauses described in ARGS. */ } #endif /* 0 */ static void -catch_command (arg, from_tty) - char *arg; - int from_tty; +catch_command (char *arg, int from_tty) { catch_command_1 (arg, 0, from_tty); } static void -tcatch_command (arg, from_tty) - char *arg; - int from_tty; +tcatch_command (char *arg, int from_tty) { catch_command_1 (arg, 1, from_tty); } static void -clear_command (arg, from_tty) - char *arg; - int from_tty; +clear_command (char *arg, int from_tty) { register struct breakpoint *b, *b1; int default_match; @@ -5685,7 +6643,7 @@ clear_command (arg, from_tty) if (from_tty) putchar_unfiltered ('\n'); } - free ((PTR) sals.sals); + xfree (sals.sals); } /* Delete breakpoint in BS if they are `delete' breakpoints and @@ -5693,8 +6651,7 @@ clear_command (arg, from_tty) This is called after any breakpoint is hit, or after errors. */ void -breakpoint_auto_delete (bs) - bpstat bs; +breakpoint_auto_delete (bpstat bs) { struct breakpoint *b, *temp; @@ -5710,11 +6667,11 @@ breakpoint_auto_delete (bs) } } -/* Delete a breakpoint and clean up all traces of it in the data structures. */ +/* Delete a breakpoint and clean up all traces of it in the data + structures. */ void -delete_breakpoint (bpt) - struct breakpoint *bpt; +delete_breakpoint (struct breakpoint *bpt) { register struct breakpoint *b; register bpstat bs; @@ -5741,6 +6698,7 @@ delete_breakpoint (bpt) if (delete_breakpoint_hook) delete_breakpoint_hook (bpt); + breakpoint_delete_event (bpt->number); if (bpt->inserted) remove_breakpoint (bpt, mark_uninserted); @@ -5760,8 +6718,10 @@ delete_breakpoint (bpt) 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; + /* Format possible error msg */ + sprintf (message, message1, bpt->number); + args.kind = bpt->type == bp_catch_catch ? + EX_EVENT_CATCH : EX_EVENT_THROW; args.enable = 0; catch_errors (cover_target_enable_exception_callback, &args, message, RETURN_MASK_ALL); @@ -5815,11 +6775,25 @@ delete_breakpoint (bpt) && b->enable != call_disabled) { int val; - val = target_insert_breakpoint (b->address, b->shadow_contents); + + /* We should never reach this point if there is a permanent + breakpoint at the same address as the one being deleted. + If there is a permanent breakpoint somewhere, it should + always be the only one inserted. */ + if (b->enable == permanent) + internal_error (__FILE__, __LINE__, + "another breakpoint was inserted on top of " + "a permanent breakpoint"); + + if (b->type == bp_hardware_breakpoint) + val = target_insert_hw_breakpoint (b->address, b->shadow_contents); + else + val = target_insert_breakpoint (b->address, b->shadow_contents); + if (val != 0) { target_terminal_ours_for_output (); - fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); + warning ("Cannot insert breakpoint %d:", b->number); memory_error (val, b->address); /* which bombs us out */ } else @@ -5829,25 +6803,25 @@ delete_breakpoint (bpt) free_command_lines (&bpt->commands); if (bpt->cond) - free (bpt->cond); + xfree (bpt->cond); if (bpt->cond_string != NULL) - free (bpt->cond_string); + xfree (bpt->cond_string); if (bpt->addr_string != NULL) - free (bpt->addr_string); + xfree (bpt->addr_string); if (bpt->exp != NULL) - free (bpt->exp); + xfree (bpt->exp); if (bpt->exp_string != NULL) - free (bpt->exp_string); + xfree (bpt->exp_string); if (bpt->val != NULL) value_free (bpt->val); if (bpt->source_file != NULL) - free (bpt->source_file); + xfree (bpt->source_file); if (bpt->dll_pathname != NULL) - free (bpt->dll_pathname); + xfree (bpt->dll_pathname); if (bpt->triggered_dll_pathname != NULL) - free (bpt->triggered_dll_pathname); + xfree (bpt->triggered_dll_pathname); if (bpt->exec_pathname != NULL) - free (bpt->exec_pathname); + xfree (bpt->exec_pathname); /* Be sure no bpstat's are pointing at it after it's been freed. */ /* FIXME, how can we find all bpstat's? @@ -5869,13 +6843,29 @@ delete_breakpoint (bpt) bp, we mark it as deleted before freeing its storage. */ bpt->type = bp_none; - free ((PTR) bpt); + xfree (bpt); +} + +static void +do_delete_breakpoint_cleanup (void *b) +{ + delete_breakpoint (b); +} + +struct cleanup * +make_cleanup_delete_breakpoint (struct breakpoint *b) +{ + return make_cleanup (do_delete_breakpoint_cleanup, b); +} + +struct cleanup * +make_exec_cleanup_delete_breakpoint (struct breakpoint *b) +{ + return make_exec_cleanup (do_delete_breakpoint_cleanup, b); } void -delete_command (arg, from_tty) - char *arg; - int from_tty; +delete_command (char *arg, int from_tty) { struct breakpoint *b, *temp; @@ -5890,6 +6880,7 @@ delete_command (arg, from_tty) { if (b->type != bp_call_dummy && b->type != bp_shlib_event && + b->type != bp_thread_event && b->number >= 0) breaks_to_delete = 1; } @@ -5902,6 +6893,7 @@ delete_command (arg, from_tty) { if (b->type != bp_call_dummy && b->type != bp_shlib_event && + b->type != bp_thread_event && b->number >= 0) delete_breakpoint (b); } @@ -5916,10 +6908,10 @@ delete_command (arg, from_tty) Unused in this case. */ static int -breakpoint_re_set_one (bint) - PTR bint; +breakpoint_re_set_one (PTR bint) { - struct breakpoint *b = (struct breakpoint *) bint; /* get past catch_errs */ + /* get past catch_errs */ + struct breakpoint *b = (struct breakpoint *) bint; struct value *mark; int i; struct symtabs_and_lines sals; @@ -5929,7 +6921,8 @@ breakpoint_re_set_one (bint) switch (b->type) { case bp_none: - warning ("attempted to reset apparently deleted breakpoint #%d?\n", b->number); + warning ("attempted to reset apparently deleted breakpoint #%d?", + b->number); return 0; case bp_breakpoint: case bp_hardware_breakpoint: @@ -5960,7 +6953,7 @@ breakpoint_re_set_one (bint) { s = b->cond_string; if (b->cond) - free ((PTR) b->cond); + xfree (b->cond); b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); } @@ -5979,7 +6972,7 @@ breakpoint_re_set_one (bint) ) { if (b->source_file != NULL) - free (b->source_file); + xfree (b->source_file); if (sals.sals[i].symtab == NULL) b->source_file = NULL; else @@ -6008,7 +7001,7 @@ breakpoint_re_set_one (bint) check_duplicates (b->address, b->section); } - free ((PTR) sals.sals); + xfree (sals.sals); break; case bp_watchpoint: @@ -6016,16 +7009,17 @@ breakpoint_re_set_one (bint) case bp_read_watchpoint: case bp_access_watchpoint: innermost_block = NULL; - /* The issue arises of what context to evaluate this in. The same - one as when it was set, but what does that mean when symbols have - been re-read? We could save the filename and functionname, but - if the context is more local than that, the best we could do would - be something like how many levels deep and which index at that - particular level, but that's going to be less stable than filenames - or functionnames. */ + /* The issue arises of what context to evaluate this in. The + same one as when it was set, but what does that mean when + symbols have been re-read? We could save the filename and + functionname, but if the context is more local than that, the + best we could do would be something like how many levels deep + and which index at that particular level, but that's going to + be less stable than filenames or function names. */ + /* So for now, just use a global context. */ if (b->exp) - free ((PTR) b->exp); + xfree (b->exp); b->exp = parse_expression (b->exp_string); b->exp_valid_block = innermost_block; mark = value_mark (); @@ -6040,7 +7034,7 @@ breakpoint_re_set_one (bint) { s = b->cond_string; if (b->cond) - free ((PTR) b->cond); + xfree (b->cond); b->cond = parse_exp_1 (&s, (struct block *) 0, 0); } if (b->enable == enabled) @@ -6072,6 +7066,10 @@ breakpoint_re_set_one (bint) starts and we really don't want to touch it. */ case bp_shlib_event: + /* Like bp_shlib_event, this breakpoint type is special. + Once it is set up, we do not want to touch it. */ + case bp_thread_event: + /* Keep temporary breakpoints, which can be encountered when we step over a dlopen call and SOLIB_ADD is resetting the breakpoints. Otherwise these should have been blown away via the cleanup chain @@ -6089,7 +7087,7 @@ breakpoint_re_set_one (bint) /* Re-set all breakpoints after symbols have been re-loaded. */ void -breakpoint_re_set () +breakpoint_re_set (void) { struct breakpoint *b, *temp; enum language save_language; @@ -6101,7 +7099,8 @@ breakpoint_re_set () save_input_radix = input_radix; ALL_BREAKPOINTS_SAFE (b, temp) { - sprintf (message, message1, b->number); /* Format possible error msg */ + /* Format possible error msg */ + sprintf (message, message1, b->number); catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); } set_language (save_language); @@ -6132,8 +7131,7 @@ breakpoint_re_set () - 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; +breakpoint_re_set_thread (struct breakpoint *b) { if (b->thread != -1) { @@ -6143,8 +7141,7 @@ breakpoint_re_set_thread (b) } void -set_ignore_count (bptnum, count, from_tty) - int bptnum, count, from_tty; +set_ignore_count (int bptnum, int count, int from_tty) { register struct breakpoint *b; @@ -6175,7 +7172,7 @@ set_ignore_count (bptnum, count, from_tty) /* Clear the ignore counts of all breakpoints. */ void -breakpoint_clear_ignore_counts () +breakpoint_clear_ignore_counts (void) { struct breakpoint *b; @@ -6186,9 +7183,7 @@ breakpoint_clear_ignore_counts () /* Command to set ignore-count of breakpoint N to COUNT. */ static void -ignore_command (args, from_tty) - char *args; - int from_tty; +ignore_command (char *args, int from_tty) { char *p = args; register int num; @@ -6197,7 +7192,8 @@ ignore_command (args, from_tty) error_no_arg ("a breakpoint number"); num = get_number (&p); - + if (num == 0) + error ("bad breakpoint number: '%s'", args); if (*p == 0) error ("Second argument (specified ignore-count) is missing."); @@ -6212,42 +7208,48 @@ ignore_command (args, from_tty) whose numbers are given in ARGS. */ static void -map_breakpoint_numbers (args, function) - char *args; - void (*function) PARAMS ((struct breakpoint *)); +map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) { register char *p = args; char *p1; register int num; - register struct breakpoint *b; + register struct breakpoint *b, *tmp; + int match; if (p == 0) error_no_arg ("one or more breakpoint numbers"); while (*p) { + match = 0; p1 = p; - num = get_number (&p1); - - ALL_BREAKPOINTS (b) - if (b->number == num) + num = get_number_or_range (&p1); + if (num == 0) { - struct breakpoint *related_breakpoint = b->related_breakpoint; - function (b); - if (related_breakpoint) - function (related_breakpoint); - goto win; + warning ("bad breakpoint number at or near '%s'", p); + } + else + { + ALL_BREAKPOINTS_SAFE (b, tmp) + if (b->number == num) + { + struct breakpoint *related_breakpoint = b->related_breakpoint; + match = 1; + function (b); + if (related_breakpoint) + function (related_breakpoint); + break; + } + if (match == 0) + printf_unfiltered ("No breakpoint number %d.\n", num); } - printf_unfiltered ("No breakpoint number %d.\n", num); - win: p = p1; } } void -disable_breakpoint (bpt) - struct breakpoint *bpt; +disable_breakpoint (struct breakpoint *bpt) { /* Never disable a watchpoint scope breakpoint; we want to hit them when we leave scope so we can delete both the @@ -6255,19 +7257,22 @@ disable_breakpoint (bpt) if (bpt->type == bp_watchpoint_scope) return; + /* You can't disable permanent breakpoints. */ + if (bpt->enable == permanent) + return; + bpt->enable = disabled; check_duplicates (bpt->address, bpt->section); if (modify_breakpoint_hook) modify_breakpoint_hook (bpt); + breakpoint_modify_event (bpt->number); } /* ARGSUSED */ static void -disable_command (args, from_tty) - char *args; - int from_tty; +disable_command (char *args, int from_tty) { register struct breakpoint *bpt; if (args == 0) @@ -6275,7 +7280,8 @@ disable_command (args, from_tty) switch (bpt->type) { case bp_none: - warning ("attempted to disable apparently deleted breakpoint #%d?\n", bpt->number); + warning ("attempted to disable apparently deleted breakpoint #%d?", + bpt->number); continue; case bp_breakpoint: case bp_catch_load: @@ -6299,9 +7305,7 @@ disable_command (args, from_tty) } static void -do_enable_breakpoint (bpt, disposition) - struct breakpoint *bpt; - enum bpdisp disposition; +do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) { struct frame_info *save_selected_frame = NULL; int save_selected_frame_level = -1; @@ -6312,21 +7316,25 @@ do_enable_breakpoint (bpt, disposition) { int i; i = hw_breakpoint_used_count (); - target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( - bp_hardware_breakpoint, i + 1, 0); + 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; + if (bpt->enable != permanent) + bpt->enable = enabled; bpt->disposition = disposition; check_duplicates (bpt->address, bpt->section); breakpoints_changed (); - if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || - bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) + if (bpt->type == bp_watchpoint || + bpt->type == bp_hardware_watchpoint || + bpt->type == bp_read_watchpoint || + bpt->type == bp_access_watchpoint) { if (bpt->exp_valid_block != NULL) { @@ -6383,16 +7391,16 @@ have been allocated for other watchpoints.\n", bpt->number); } if (save_selected_frame_level >= 0) - select_and_print_frame (save_selected_frame, save_selected_frame_level); + select_frame (save_selected_frame, save_selected_frame_level); value_free_to_mark (mark); } if (modify_breakpoint_hook) modify_breakpoint_hook (bpt); + breakpoint_modify_event (bpt->number); } void -enable_breakpoint (bpt) - struct breakpoint *bpt; +enable_breakpoint (struct breakpoint *bpt) { do_enable_breakpoint (bpt, bpt->disposition); } @@ -6403,9 +7411,7 @@ enable_breakpoint (bpt) /* ARGSUSED */ static void -enable_command (args, from_tty) - char *args; - int from_tty; +enable_command (char *args, int from_tty) { register struct breakpoint *bpt; if (args == 0) @@ -6413,7 +7419,8 @@ enable_command (args, from_tty) switch (bpt->type) { case bp_none: - warning ("attempted to enable apparently deleted breakpoint #%d?\n", bpt->number); + warning ("attempted to enable apparently deleted breakpoint #%d?", + bpt->number); continue; case bp_breakpoint: case bp_catch_load: @@ -6437,33 +7444,27 @@ enable_command (args, from_tty) } static void -enable_once_breakpoint (bpt) - struct breakpoint *bpt; +enable_once_breakpoint (struct breakpoint *bpt) { do_enable_breakpoint (bpt, disable); } /* ARGSUSED */ static void -enable_once_command (args, from_tty) - char *args; - int from_tty; +enable_once_command (char *args, int from_tty) { map_breakpoint_numbers (args, enable_once_breakpoint); } static void -enable_delete_breakpoint (bpt) - struct breakpoint *bpt; +enable_delete_breakpoint (struct breakpoint *bpt) { do_enable_breakpoint (bpt, del); } /* ARGSUSED */ static void -enable_delete_command (args, from_tty) - char *args; - int from_tty; +enable_delete_command (char *args, int from_tty) { map_breakpoint_numbers (args, enable_delete_breakpoint); } @@ -6471,16 +7472,15 @@ enable_delete_command (args, from_tty) /* Use default_breakpoint_'s, or nothing if they aren't valid. */ struct symtabs_and_lines -decode_line_spec_1 (string, funfirstline) - char *string; - int funfirstline; +decode_line_spec_1 (char *string, int funfirstline) { struct symtabs_and_lines sals; if (string == 0) error ("Empty line specification."); if (default_breakpoint_valid) sals = decode_line_1 (&string, funfirstline, - default_breakpoint_symtab, default_breakpoint_line, + default_breakpoint_symtab, + default_breakpoint_line, (char ***) NULL); else sals = decode_line_1 (&string, funfirstline, @@ -6491,7 +7491,7 @@ decode_line_spec_1 (string, funfirstline) } void -_initialize_breakpoint () +_initialize_breakpoint (void) { struct cmd_list_element *c; @@ -6797,7 +7797,6 @@ 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.");