X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fstack.c;h=4e3bc677332bd02937ce9439b29b84ce1402b2ca;hb=112e8700a6fd2fed65ca70132c9cbed4132e8bd4;hp=31a723d71c053801d129fad5b3ce4c76290eb834;hpb=7ff38b1c898be5db053193f26d6a3a1d8a6074e8;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/stack.c b/gdb/stack.c index 31a723d71c..4e3bc67733 100644 --- a/gdb/stack.c +++ b/gdb/stack.c @@ -1,6 +1,6 @@ /* Print and select stack frames for GDB, the GNU debugger. - Copyright (C) 1986-2015 Free Software Foundation, Inc. + Copyright (C) 1986-2016 Free Software Foundation, Inc. This file is part of GDB. @@ -48,9 +48,10 @@ #include "cli/cli-utils.h" #include "objfiles.h" -#include +#include "safe-ctype.h" #include "symfile.h" #include "extension.h" +#include "observer.h" /* The possible choices of "set print frame-arguments", and the value of this setting. */ @@ -141,7 +142,19 @@ frame_show_address (struct frame_info *frame, return get_frame_pc (frame) != sal.pc; } -/* Show or print a stack frame FRAME briefly. The output is format +/* See frame.h. */ + +void +print_stack_frame_to_uiout (struct ui_out *uiout, struct frame_info *frame, + int print_level, enum print_what print_what, + int set_current_sal) +{ + scoped_restore save_uiout = make_scoped_restore (¤t_uiout, uiout); + + print_stack_frame (frame, print_level, print_what, set_current_sal); +} + +/* Show or print a stack frame FRAME briefly. The output is formatted according to PRINT_LEVEL and PRINT_WHAT printing the frame's relative level, function name, argument list, and file name and line number. If the frame's PC is not at the beginning of the @@ -154,7 +167,7 @@ print_stack_frame (struct frame_info *frame, int print_level, { /* For mi, alway print location and address. */ - if (ui_out_is_mi_like_p (current_uiout)) + if (current_uiout->is_mi_like_p ()) print_what = LOC_AND_ADDRESS; TRY @@ -221,7 +234,7 @@ print_frame_arg (const struct frame_arg *arg) gdb_assert (!arg->val || !arg->error); gdb_assert (arg->entry_kind == print_entry_values_no || arg->entry_kind == print_entry_values_only - || (!ui_out_is_mi_like_p (uiout) + || (!uiout->is_mi_like_p () && arg->entry_kind == print_entry_values_compact)); annotate_arg_begin (); @@ -242,12 +255,12 @@ print_frame_arg (const struct frame_arg *arg) if (arg->entry_kind == print_entry_values_only || arg->entry_kind == print_entry_values_compact) fputs_filtered ("@entry", stb); - ui_out_field_stream (uiout, "name", stb); + uiout->field_stream ("name", stb); annotate_arg_name_end (); - ui_out_text (uiout, "="); + uiout->text ("="); if (!arg->val && !arg->error) - ui_out_text (uiout, "..."); + uiout->text ("..."); else { if (arg->error) @@ -294,7 +307,7 @@ print_frame_arg (const struct frame_arg *arg) error_message); } - ui_out_field_stream (uiout, "value", stb); + uiout->field_stream ("value", stb); /* Also invoke ui_out_tuple_end. */ do_cleanups (old_chain); @@ -310,15 +323,13 @@ void read_frame_local (struct symbol *sym, struct frame_info *frame, struct frame_arg *argp) { - struct value *val = NULL; - argp->sym = sym; argp->val = NULL; argp->error = NULL; TRY { - argp->val = read_var_value (sym, frame); + argp->val = read_var_value (sym, NULL, frame); } CATCH (except, RETURN_MASK_ERROR) { @@ -344,11 +355,11 @@ read_frame_arg (struct symbol *sym, struct frame_info *frame, { TRY { - val = read_var_value (sym, frame); + val = read_var_value (sym, NULL, frame); } CATCH (except, RETURN_MASK_ERROR) { - val_error = alloca (strlen (except.message) + 1); + val_error = (char *) alloca (strlen (except.message) + 1); strcpy (val_error, except.message); } END_CATCH @@ -385,7 +396,7 @@ read_frame_arg (struct symbol *sym, struct frame_info *frame, { /* For MI do not try to use print_entry_values_compact for ARGP. */ - if (val && entryval && !ui_out_is_mi_like_p (current_uiout)) + if (val && entryval && !current_uiout->is_mi_like_p ()) { struct type *type = value_type (val); @@ -471,11 +482,11 @@ read_frame_arg (struct symbol *sym, struct frame_info *frame, TRY { - val = read_var_value (sym, frame); + val = read_var_value (sym, NULL, frame); } CATCH (except, RETURN_MASK_ERROR) { - val_error = alloca (strlen (except.message) + 1); + val_error = (char *) alloca (strlen (except.message) + 1); strcpy (val_error, except.message); } END_CATCH @@ -507,7 +518,7 @@ read_frame_arg (struct symbol *sym, struct frame_info *frame, || print_entry_values == print_entry_values_default) && val_equal) { argp->entry_kind = print_entry_values_compact; - gdb_assert (!ui_out_is_mi_like_p (current_uiout)); + gdb_assert (!current_uiout->is_mi_like_p ()); } else argp->entry_kind = print_entry_values_no; @@ -669,8 +680,8 @@ print_frame_args (struct symbol *func, struct frame_info *frame, /* Print the current arg. */ if (!first) - ui_out_text (uiout, ", "); - ui_out_wrap_hint (uiout, " "); + uiout->text (", "); + uiout->wrap_hint (" "); if (!print_args) { @@ -691,8 +702,8 @@ print_frame_args (struct symbol *func, struct frame_info *frame, { if (arg.entry_kind != print_entry_values_only) { - ui_out_text (uiout, ", "); - ui_out_wrap_hint (uiout, " "); + uiout->text (", "); + uiout->wrap_hint (" "); } print_frame_arg (&entryarg); @@ -815,14 +826,14 @@ print_frame_info (struct frame_info *frame, int print_level, to list for this frame. */ if (print_level) { - ui_out_text (uiout, "#"); - ui_out_field_fmt_int (uiout, 2, ui_left, "level", + uiout->text ("#"); + uiout->field_fmt_int (2, ui_left, "level", frame_relative_level (frame)); } - if (ui_out_is_mi_like_p (uiout)) + if (uiout->is_mi_like_p ()) { annotate_frame_address (); - ui_out_field_core_addr (uiout, "addr", + uiout->field_core_addr ("addr", gdbarch, get_frame_pc (frame)); annotate_frame_address_end (); } @@ -830,18 +841,18 @@ print_frame_info (struct frame_info *frame, int print_level, if (get_frame_type (frame) == DUMMY_FRAME) { annotate_function_call (); - ui_out_field_string (uiout, "func", ""); + uiout->field_string ("func", ""); } else if (get_frame_type (frame) == SIGTRAMP_FRAME) { annotate_signal_handler_caller (); - ui_out_field_string (uiout, "func", ""); + uiout->field_string ("func", ""); } else if (get_frame_type (frame) == ARCH_FRAME) { - ui_out_field_string (uiout, "func", ""); + uiout->field_string ("func", ""); } - ui_out_text (uiout, "\n"); + uiout->text ("\n"); annotate_frame_end (); /* If disassemble-next-line is set to auto or on output the next @@ -910,9 +921,9 @@ print_frame_info (struct frame_info *frame, int print_level, ability to decide for themselves if it is desired. */ if (opts.addressprint && mid_statement) { - ui_out_field_core_addr (uiout, "addr", + uiout->field_core_addr ("addr", gdbarch, get_frame_pc (frame)); - ui_out_text (uiout, "\t"); + uiout->text ("\t"); } print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); @@ -1103,7 +1114,8 @@ find_frame_funname (struct frame_info *frame, char **funname, } else { - *funname = xstrdup (SYMBOL_PRINT_NAME (func)); + const char *print_name = SYMBOL_PRINT_NAME (func); + *funlang = SYMBOL_LANGUAGE (func); if (funcp) *funcp = func; @@ -1114,14 +1126,17 @@ find_frame_funname (struct frame_info *frame, char **funname, stored in the symbol table, but we stored a version with DMGL_PARAMS turned on, and here we don't want to display parameters. So remove the parameters. */ - char *func_only = cp_remove_params (*funname); + char *func_only = cp_remove_params (print_name); if (func_only) - { - xfree (*funname); - *funname = func_only; - } + *funname = func_only; } + + /* If we didn't hit the C++ case above, set *funname here. + This approach is taken to avoid having to install a + cleanup in case cp_remove_params can throw. */ + if (*funname == NULL) + *funname = xstrdup (print_name); } } else @@ -1172,8 +1187,8 @@ print_frame (struct frame_info *frame, int print_level, if (print_level) { - ui_out_text (uiout, "#"); - ui_out_field_fmt_int (uiout, 2, ui_left, "level", + uiout->text ("#"); + uiout->field_fmt_int (2, ui_left, "level", frame_relative_level (frame)); } get_user_print_options (&opts); @@ -1184,20 +1199,20 @@ print_frame (struct frame_info *frame, int print_level, { annotate_frame_address (); if (pc_p) - ui_out_field_core_addr (uiout, "addr", gdbarch, pc); + uiout->field_core_addr ("addr", gdbarch, pc); else - ui_out_field_string (uiout, "addr", ""); + uiout->field_string ("addr", ""); annotate_frame_address_end (); - ui_out_text (uiout, " in "); + uiout->text (" in "); } annotate_frame_function_name (); fprintf_symbol_filtered (stb, funname ? funname : "??", funlang, DMGL_ANSI); - ui_out_field_stream (uiout, "func", stb); - ui_out_wrap_hint (uiout, " "); + uiout->field_stream ("func", stb); + uiout->wrap_hint (" "); annotate_frame_args (); - ui_out_text (uiout, " ("); + uiout->text (" ("); if (print_args) { struct gdbarch *gdbarch = get_frame_arch (frame); @@ -1228,27 +1243,27 @@ print_frame (struct frame_info *frame, int print_level, do_cleanups (args_list_chain); QUIT; } - ui_out_text (uiout, ")"); + uiout->text (")"); if (sal.symtab) { const char *filename_display; filename_display = symtab_to_filename_for_display (sal.symtab); annotate_frame_source_begin (); - ui_out_wrap_hint (uiout, " "); - ui_out_text (uiout, " at "); + uiout->wrap_hint (" "); + uiout->text (" at "); annotate_frame_source_file (); - ui_out_field_string (uiout, "file", filename_display); - if (ui_out_is_mi_like_p (uiout)) + uiout->field_string ("file", filename_display); + if (uiout->is_mi_like_p ()) { const char *fullname = symtab_to_fullname (sal.symtab); - ui_out_field_string (uiout, "fullname", fullname); + uiout->field_string ("fullname", fullname); } annotate_frame_source_file_end (); - ui_out_text (uiout, ":"); + uiout->text (":"); annotate_frame_source_line (); - ui_out_field_int (uiout, "line", sal.line); + uiout->field_int ("line", sal.line); annotate_frame_source_end (); } @@ -1260,28 +1275,26 @@ print_frame (struct frame_info *frame, int print_level, if (lib) { annotate_frame_where (); - ui_out_wrap_hint (uiout, " "); - ui_out_text (uiout, " from "); - ui_out_field_string (uiout, "from", lib); + uiout->wrap_hint (" "); + uiout->text (" from "); + uiout->field_string ("from", lib); } } /* do_cleanups will call ui_out_tuple_end() for us. */ do_cleanups (list_chain); - ui_out_text (uiout, "\n"); + uiout->text ("\n"); do_cleanups (old_chain); } -/* Read a frame specification in whatever the appropriate format is - from FRAME_EXP. Call error(), printing MESSAGE, if the - specification is in any way invalid (so this function never returns - NULL). When SEPECTED_P is non-NULL set its target to indicate that - the default selected frame was used. */ +/* Read a frame specification in whatever the appropriate format is from + FRAME_EXP. Call error() if the specification is in any way invalid (so + this function never returns NULL). When SELECTED_FRAME_P is non-NULL + set its target to indicate that the default selected frame was used. */ static struct frame_info * -parse_frame_specification_1 (const char *frame_exp, const char *message, - int *selected_frame_p) +parse_frame_specification (const char *frame_exp, int *selected_frame_p) { int numargs; struct value *args[4]; @@ -1305,7 +1318,7 @@ parse_frame_specification_1 (const char *frame_exp, const char *message, /* Parse the argument, extract it, save it. */ for (p = frame_exp; - *p && !isspace (*p); + *p && !ISSPACE (*p); p++); addr_string = savestring (frame_exp, p - frame_exp); frame_exp = p; @@ -1330,7 +1343,7 @@ parse_frame_specification_1 (const char *frame_exp, const char *message, { if (selected_frame_p != NULL) (*selected_frame_p) = 1; - return get_selected_frame (message); + return get_selected_frame (_("No stack.")); } /* None of the remaining use the selected frame. */ @@ -1401,12 +1414,6 @@ parse_frame_specification_1 (const char *frame_exp, const char *message, error (_("Too many args in frame specification")); } -static struct frame_info * -parse_frame_specification (char *frame_exp) -{ - return parse_frame_specification_1 (frame_exp, NULL, NULL); -} - /* Print verbosely the selected frame or the frame at address ADDR_EXP. Absolutely all information in the frame is printed. */ @@ -1431,7 +1438,7 @@ frame_info (char *addr_exp, int from_tty) CORE_ADDR caller_pc = 0; int caller_pc_p = 0; - fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); + fi = parse_frame_specification (addr_exp, &selected_frame_p); gdbarch = get_frame_arch (fi); /* Name of the value returned by get_frame_pc(). Per comments, "pc" @@ -1517,27 +1524,32 @@ frame_info (char *addr_exp, int from_tty) wrap_here (" "); printf_filtered ("saved %s = ", pc_regname); - TRY - { - caller_pc = frame_unwind_caller_pc (fi); - caller_pc_p = 1; - } - CATCH (ex, RETURN_MASK_ERROR) + if (!frame_id_p (frame_unwind_caller_id (fi))) + val_print_not_saved (gdb_stdout); + else { - switch (ex.error) + TRY { - case NOT_AVAILABLE_ERROR: - val_print_unavailable (gdb_stdout); - break; - case OPTIMIZED_OUT_ERROR: - val_print_not_saved (gdb_stdout); - break; - default: - fprintf_filtered (gdb_stdout, _(""), ex.message); - break; + caller_pc = frame_unwind_caller_pc (fi); + caller_pc_p = 1; } + CATCH (ex, RETURN_MASK_ERROR) + { + switch (ex.error) + { + case NOT_AVAILABLE_ERROR: + val_print_unavailable (gdb_stdout); + break; + case OPTIMIZED_OUT_ERROR: + val_print_not_saved (gdb_stdout); + break; + default: + fprintf_filtered (gdb_stdout, _(""), ex.message); + break; + } + } + END_CATCH } - END_CATCH if (caller_pc_p) fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); @@ -1894,7 +1906,7 @@ backtrace_command (char *arg, int from_tty) unsigned int j; for (j = 0; j < strlen (argv[i]); j++) - argv[i][j] = tolower (argv[i][j]); + argv[i][j] = TOLOWER (argv[i][j]); if (no_filters < 0 && subset_compare (argv[i], "no-filters")) no_filters = argc; @@ -1915,7 +1927,7 @@ backtrace_command (char *arg, int from_tty) { if (arglen > 0) { - arg = xmalloc (arglen + 1); + arg = (char *) xmalloc (arglen + 1); make_cleanup (xfree, arg); arg[0] = 0; for (i = 0; i < argc; i++) @@ -2059,7 +2071,8 @@ do_print_variable_and_value (const char *print_name, struct symbol *sym, void *cb_data) { - struct print_variable_and_value_data *p = cb_data; + struct print_variable_and_value_data *p + = (struct print_variable_and_value_data *) cb_data; struct frame_info *frame; frame = frame_find_by_id (p->frame_id); @@ -2089,6 +2102,7 @@ print_frame_local_vars (struct frame_info *frame, int num_tabs, struct print_variable_and_value_data cb_data; const struct block *block; CORE_ADDR pc; + struct gdb_exception except = exception_none; if (!get_frame_pc_if_available (frame, &pc)) { @@ -2109,9 +2123,27 @@ print_frame_local_vars (struct frame_info *frame, int num_tabs, cb_data.stream = stream; cb_data.values_printed = 0; - iterate_over_block_local_vars (block, - do_print_variable_and_value, - &cb_data); + /* Temporarily change the selected frame to the given FRAME. + This allows routines that rely on the selected frame instead + of being given a frame as parameter to use the correct frame. */ + select_frame (frame); + + TRY + { + iterate_over_block_local_vars (block, + do_print_variable_and_value, + &cb_data); + } + CATCH (ex, RETURN_MASK_ALL) + { + except = ex; + } + END_CATCH + + /* Restore the selected frame, and then rethrow if there was a problem. */ + select_frame (frame_find_by_id (cb_data.frame_id)); + if (except.reason < 0) + throw_exception (except); /* do_print_variable_and_value invalidates FRAME. */ frame = NULL; @@ -2283,7 +2315,11 @@ find_relative_frame (struct frame_info *frame, int *level_offset_ptr) void select_frame_command (char *level_exp, int from_tty) { - select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); + struct frame_info *prev_frame = get_selected_frame_if_set (); + + select_frame (parse_frame_specification (level_exp, NULL)); + if (get_selected_frame_if_set () != prev_frame) + observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); } /* The "frame" command. With no argument, print the selected frame @@ -2293,8 +2329,13 @@ select_frame_command (char *level_exp, int from_tty) static void frame_command (char *level_exp, int from_tty) { - select_frame_command (level_exp, from_tty); - print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); + struct frame_info *prev_frame = get_selected_frame_if_set (); + + select_frame (parse_frame_specification (level_exp, NULL)); + if (get_selected_frame_if_set () != prev_frame) + observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); + else + print_selected_thread_frame (current_uiout, USER_SELECTED_FRAME); } /* Select the frame up one or COUNT_EXP stack levels from the @@ -2325,7 +2366,7 @@ static void up_command (char *count_exp, int from_tty) { up_silently_base (count_exp); - print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); + observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); } /* Select the frame down one or COUNT_EXP stack levels from the previously @@ -2364,9 +2405,8 @@ static void down_command (char *count_exp, int from_tty) { down_silently_base (count_exp); - print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); + observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); } - void return_command (char *retval_exp, int from_tty) @@ -2393,13 +2433,12 @@ return_command (char *retval_exp, int from_tty) message. */ if (retval_exp) { - struct expression *retval_expr = parse_expression (retval_exp); - struct cleanup *old_chain = make_cleanup (xfree, retval_expr); + expression_up retval_expr = parse_expression (retval_exp); struct type *return_type = NULL; /* Compute the return value. Should the computation fail, this call throws an error. */ - return_value = evaluate_expression (retval_expr); + return_value = evaluate_expression (retval_expr.get ()); /* Cast return value to the return type of the function. Should the cast fail, this call throws an error. */ @@ -2414,7 +2453,6 @@ return_command (char *retval_exp, int from_tty) "Please use an explicit cast of the value to return.")); return_type = value_type (return_value); } - do_cleanups (old_chain); return_type = check_typedef (return_type); return_value = value_cast (return_type, return_value); @@ -2424,7 +2462,7 @@ return_command (char *retval_exp, int from_tty) value_fetch_lazy (return_value); if (thisfun != NULL) - function = read_var_value (thisfun, thisframe); + function = read_var_value (thisfun, NULL, thisframe); rv_conv = RETURN_VALUE_REGISTER_CONVENTION; if (TYPE_CODE (return_type) == TYPE_CODE_VOID) @@ -2491,11 +2529,10 @@ return_command (char *retval_exp, int from_tty) if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) frame_pop (get_current_frame ()); + select_frame (get_current_frame ()); /* If interactive, print the frame that is now current. */ if (from_tty) - frame_command ("0", 1); - else - select_frame_command ("0", 0); + print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); } /* Sets the scope to input function name, provided that the function @@ -2517,14 +2554,13 @@ func_command (char *arg, int from_tty) struct function_bounds *func_bounds = NULL; struct cleanup *cleanups; - if (arg != NULL) + if (arg == NULL) return; - frame = parse_frame_specification ("0"); + frame = get_current_frame (); sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE); cleanups = make_cleanup (xfree, sals.sals); - func_bounds = (struct function_bounds *) xmalloc ( - sizeof (struct function_bounds) * sals.nelts); + func_bounds = XNEWVEC (struct function_bounds, sals.nelts); make_cleanup (xfree, func_bounds); for (i = 0; (i < sals.nelts && !found); i++) { @@ -2559,48 +2595,6 @@ func_command (char *arg, int from_tty) else if (frame != get_selected_frame (NULL)) select_and_print_frame (frame); } - -/* Gets the language of FRAME. */ - -enum language -get_frame_language (struct frame_info *frame) -{ - CORE_ADDR pc = 0; - int pc_p = 0; - - gdb_assert (frame!= NULL); - - /* We determine the current frame language by looking up its - associated symtab. To retrieve this symtab, we use the frame - PC. However we cannot use the frame PC as is, because it - usually points to the instruction following the "call", which - is sometimes the first instruction of another function. So - we rely on get_frame_address_in_block(), it provides us with - a PC that is guaranteed to be inside the frame's code - block. */ - - TRY - { - pc = get_frame_address_in_block (frame); - pc_p = 1; - } - CATCH (ex, RETURN_MASK_ERROR) - { - if (ex.error != NOT_AVAILABLE_ERROR) - throw_exception (ex); - } - END_CATCH - - if (pc_p) - { - struct compunit_symtab *cust = find_pc_compunit_symtab (pc); - - if (cust != NULL) - return compunit_language (cust); - } - - return language_unknown; -} /* Provide a prototype to silence -Wmissing-prototypes. */ @@ -2641,10 +2635,11 @@ a command file or a user-defined command.")); add_com_alias ("f", "frame", class_stack, 1); - add_com ("select-frame", class_stack, select_frame_command, _("\ + add_com_suppress_notification ("select-frame", class_stack, select_frame_command, _("\ Select a stack frame without printing anything.\n\ An argument specifies the frame to select.\n\ -It can be a stack frame number or the address of the frame.\n")); +It can be a stack frame number or the address of the frame.\n"), + &cli_suppress_notification.user_selected_context); add_com ("backtrace", class_stack, backtrace_command, _("\ Print backtrace of all stack frames, or innermost COUNT frames.\n\