/* MI Command Set - stack commands.
- Copyright (C) 2000-2013 Free Software Foundation, Inc.
+ Copyright (C) 2000-2018 Free Software Foundation, Inc.
Contributed by Cygnus Solutions (a Red Hat company).
This file is part of GDB.
#include "block.h"
#include "stack.h"
#include "dictionary.h"
-#include "gdb_string.h"
#include "language.h"
#include "valprint.h"
-#include "exceptions.h"
+#include "utils.h"
+#include "mi-getopt.h"
+#include "extension.h"
+#include <ctype.h>
+#include "mi-parse.h"
+#include "common/gdb_optional.h"
enum what_to_list { locals, arguments, all };
-static void list_args_or_locals (enum what_to_list what,
+static void list_args_or_locals (enum what_to_list what,
enum print_values values,
- struct frame_info *fi);
+ struct frame_info *fi,
+ int skip_unavailable);
+
+/* True if we want to allow Python-based frame filters. */
+static int frame_filters = 0;
+
+void
+mi_cmd_enable_frame_filters (const char *command, char **argv, int argc)
+{
+ if (argc != 0)
+ error (_("-enable-frame-filters: no arguments allowed"));
+ frame_filters = 1;
+}
+
+/* Like apply_ext_lang_frame_filter, but take a print_values */
+
+static enum ext_lang_bt_status
+mi_apply_ext_lang_frame_filter (struct frame_info *frame,
+ frame_filter_flags flags,
+ enum print_values print_values,
+ struct ui_out *out,
+ int frame_low, int frame_high)
+{
+ /* ext_lang_frame_args's MI options are compatible with MI print
+ values. */
+ return apply_ext_lang_frame_filter (frame, flags,
+ (enum ext_lang_frame_args) print_values,
+ out,
+ frame_low, frame_high);
+}
/* Print a list of the stack frames. Args can be none, in which case
we want to print the whole backtrace, or a pair of numbers
displayed. */
void
-mi_cmd_stack_list_frames (char *command, char **argv, int argc)
+mi_cmd_stack_list_frames (const char *command, char **argv, int argc)
{
int frame_low;
int frame_high;
int i;
- struct cleanup *cleanup_stack;
struct frame_info *fi;
+ enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
+ int raw_arg = 0;
+ int oind = 0;
+ enum opt
+ {
+ NO_FRAME_FILTERS
+ };
+ static const struct mi_opt opts[] =
+ {
+ {"-no-frame-filters", NO_FRAME_FILTERS, 0},
+ { 0, 0, 0 }
+ };
- if (argc > 2 || argc == 1)
- error (_("-stack-list-frames: Usage: [FRAME_LOW FRAME_HIGH]"));
+ /* Parse arguments. In this instance we are just looking for
+ --no-frame-filters. */
+ while (1)
+ {
+ char *oarg;
+ int opt = mi_getopt ("-stack-list-frames", argc, argv,
+ opts, &oind, &oarg);
+ if (opt < 0)
+ break;
+ switch ((enum opt) opt)
+ {
+ case NO_FRAME_FILTERS:
+ raw_arg = oind;
+ break;
+ }
+ }
- if (argc == 2)
+ /* After the last option is parsed, there should either be low -
+ high range, or no further arguments. */
+ if ((argc - oind != 0) && (argc - oind != 2))
+ error (_("-stack-list-frames: Usage: [--no-frame-filters] [FRAME_LOW FRAME_HIGH]"));
+
+ /* If there is a range, set it. */
+ if (argc - oind == 2)
{
- frame_low = atoi (argv[0]);
- frame_high = atoi (argv[1]);
+ frame_low = atoi (argv[0 + oind]);
+ frame_high = atoi (argv[1 + oind]);
}
else
{
if (fi == NULL)
error (_("-stack-list-frames: Not enough frames in stack."));
- cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack");
+ ui_out_emit_list list_emitter (current_uiout, "stack");
- /* Now let's print the frames up to frame_high, or until there are
- frames in the stack. */
- for (;
- fi && (i <= frame_high || frame_high == -1);
- i++, fi = get_prev_frame (fi))
+ if (! raw_arg && frame_filters)
{
- QUIT;
- /* Print the location and the address always, even for level 0.
- If args is 0, don't print the arguments. */
- print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */ );
+ frame_filter_flags flags = PRINT_LEVEL | PRINT_FRAME_INFO;
+ int py_frame_low = frame_low;
+
+ /* We cannot pass -1 to frame_low, as that would signify a
+ relative backtrace from the tail of the stack. So, in the case
+ of frame_low == -1, assign and increment it. */
+ if (py_frame_low == -1)
+ py_frame_low++;
+
+ result = apply_ext_lang_frame_filter (get_current_frame (), flags,
+ NO_VALUES, current_uiout,
+ py_frame_low, frame_high);
}
- do_cleanups (cleanup_stack);
+ /* Run the inbuilt backtrace if there are no filters registered, or
+ if "--no-frame-filters" has been specified from the command. */
+ if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS)
+ {
+ /* Now let's print the frames up to frame_high, or until there are
+ frames in the stack. */
+ for (;
+ fi && (i <= frame_high || frame_high == -1);
+ i++, fi = get_prev_frame (fi))
+ {
+ QUIT;
+ /* Print the location and the address always, even for level 0.
+ If args is 0, don't print the arguments. */
+ print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */, 0);
+ }
+ }
}
void
-mi_cmd_stack_info_depth (char *command, char **argv, int argc)
+mi_cmd_stack_info_depth (const char *command, char **argv, int argc)
{
int frame_high;
int i;
i++, fi = get_prev_frame (fi))
QUIT;
- ui_out_field_int (current_uiout, "depth", i);
-}
-
-static enum print_values
-parse_print_values (char *name)
-{
- if (strcmp (name, "0") == 0
- || strcmp (name, mi_no_values) == 0)
- return PRINT_NO_VALUES;
- else if (strcmp (name, "1") == 0
- || strcmp (name, mi_all_values) == 0)
- return PRINT_ALL_VALUES;
- else if (strcmp (name, "2") == 0
- || strcmp (name, mi_simple_values) == 0)
- return PRINT_SIMPLE_VALUES;
- else
- error (_("Unknown value for PRINT_VALUES: must be: \
-0 or \"%s\", 1 or \"%s\", 2 or \"%s\""),
- mi_no_values, mi_all_values, mi_simple_values);
+ current_uiout->field_int ("depth", i);
}
/* Print a list of the locals for the current frame. With argument of
values. */
void
-mi_cmd_stack_list_locals (char *command, char **argv, int argc)
+mi_cmd_stack_list_locals (const char *command, char **argv, int argc)
{
struct frame_info *frame;
+ int raw_arg = 0;
+ enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
+ enum print_values print_value;
+ int oind = 0;
+ int skip_unavailable = 0;
- if (argc != 1)
- error (_("-stack-list-locals: Usage: PRINT_VALUES"));
+ if (argc > 1)
+ {
+ enum opt
+ {
+ NO_FRAME_FILTERS,
+ SKIP_UNAVAILABLE,
+ };
+ static const struct mi_opt opts[] =
+ {
+ {"-no-frame-filters", NO_FRAME_FILTERS, 0},
+ {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
+ { 0, 0, 0 }
+ };
- frame = get_selected_frame (NULL);
+ while (1)
+ {
+ char *oarg;
+ /* Don't parse 'print-values' as an option. */
+ int opt = mi_getopt ("-stack-list-locals", argc - 1, argv,
+ opts, &oind, &oarg);
+
+ if (opt < 0)
+ break;
+ switch ((enum opt) opt)
+ {
+ case NO_FRAME_FILTERS:
+ raw_arg = oind;
+ case SKIP_UNAVAILABLE:
+ skip_unavailable = 1;
+ break;
+ }
+ }
+ }
- list_args_or_locals (locals, parse_print_values (argv[0]), frame);
+ /* After the last option is parsed, there should be only
+ 'print-values'. */
+ if (argc - oind != 1)
+ error (_("-stack-list-locals: Usage: [--no-frame-filters] "
+ "[--skip-unavailable] PRINT_VALUES"));
+
+ frame = get_selected_frame (NULL);
+ print_value = mi_parse_print_values (argv[oind]);
+
+ if (! raw_arg && frame_filters)
+ {
+ frame_filter_flags flags = PRINT_LEVEL | PRINT_LOCALS;
+
+ result = mi_apply_ext_lang_frame_filter (frame, flags, print_value,
+ current_uiout, 0, 0);
+ }
+
+ /* Run the inbuilt backtrace if there are no filters registered, or
+ if "--no-frame-filters" has been specified from the command. */
+ if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS)
+ {
+ list_args_or_locals (locals, print_value, frame,
+ skip_unavailable);
+ }
}
/* Print a list of the arguments for the current frame. With argument
values. */
void
-mi_cmd_stack_list_args (char *command, char **argv, int argc)
+mi_cmd_stack_list_args (const char *command, char **argv, int argc)
{
int frame_low;
int frame_high;
int i;
struct frame_info *fi;
- struct cleanup *cleanup_stack_args;
enum print_values print_values;
struct ui_out *uiout = current_uiout;
+ int raw_arg = 0;
+ int oind = 0;
+ int skip_unavailable = 0;
+ enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
+ enum opt
+ {
+ NO_FRAME_FILTERS,
+ SKIP_UNAVAILABLE,
+ };
+ static const struct mi_opt opts[] =
+ {
+ {"-no-frame-filters", NO_FRAME_FILTERS, 0},
+ {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
+ { 0, 0, 0 }
+ };
+
+ while (1)
+ {
+ char *oarg;
+ int opt = mi_getopt_allow_unknown ("-stack-list-args", argc, argv,
+ opts, &oind, &oarg);
+
+ if (opt < 0)
+ break;
+ switch ((enum opt) opt)
+ {
+ case NO_FRAME_FILTERS:
+ raw_arg = oind;
+ break;
+ case SKIP_UNAVAILABLE:
+ skip_unavailable = 1;
+ break;
+ }
+ }
- if (argc < 1 || argc > 3 || argc == 2)
- error (_("-stack-list-arguments: Usage: "
+ if (argc - oind != 1 && argc - oind != 3)
+ error (_("-stack-list-arguments: Usage: " \
+ "[--no-frame-filters] [--skip-unavailable] "
"PRINT_VALUES [FRAME_LOW FRAME_HIGH]"));
- if (argc == 3)
+ if (argc - oind == 3)
{
- frame_low = atoi (argv[1]);
- frame_high = atoi (argv[2]);
+ frame_low = atoi (argv[1 + oind]);
+ frame_high = atoi (argv[2 + oind]);
}
else
{
frame_high = -1;
}
- print_values = parse_print_values (argv[0]);
+ print_values = mi_parse_print_values (argv[oind]);
/* Let's position fi on the frame at which to start the
display. Could be the innermost frame if the whole stack needs
if (fi == NULL)
error (_("-stack-list-arguments: Not enough frames in stack."));
- cleanup_stack_args
- = make_cleanup_ui_out_list_begin_end (uiout, "stack-args");
+ ui_out_emit_list list_emitter (uiout, "stack-args");
- /* Now let's print the frames up to frame_high, or until there are
- frames in the stack. */
- for (;
- fi && (i <= frame_high || frame_high == -1);
- i++, fi = get_prev_frame (fi))
+ if (! raw_arg && frame_filters)
{
- struct cleanup *cleanup_frame;
-
- QUIT;
- cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
- ui_out_field_int (uiout, "level", i);
- list_args_or_locals (arguments, print_values, fi);
- do_cleanups (cleanup_frame);
+ frame_filter_flags flags = PRINT_LEVEL | PRINT_ARGS;
+ int py_frame_low = frame_low;
+
+ /* We cannot pass -1 to frame_low, as that would signify a
+ relative backtrace from the tail of the stack. So, in the case
+ of frame_low == -1, assign and increment it. */
+ if (py_frame_low == -1)
+ py_frame_low++;
+
+ result = mi_apply_ext_lang_frame_filter (get_current_frame (), flags,
+ print_values, current_uiout,
+ py_frame_low, frame_high);
}
- do_cleanups (cleanup_stack_args);
+ /* Run the inbuilt backtrace if there are no filters registered, or
+ if "--no-frame-filters" has been specified from the command. */
+ if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS)
+ {
+ /* Now let's print the frames up to frame_high, or until there are
+ frames in the stack. */
+ for (;
+ fi && (i <= frame_high || frame_high == -1);
+ i++, fi = get_prev_frame (fi))
+ {
+ QUIT;
+ ui_out_emit_tuple tuple_emitter (uiout, "frame");
+ uiout->field_int ("level", i);
+ list_args_or_locals (arguments, print_values, fi, skip_unavailable);
+ }
+ }
}
/* Print a list of the local variables (including arguments) for the
parse_print_value for possible values. */
void
-mi_cmd_stack_list_variables (char *command, char **argv, int argc)
+mi_cmd_stack_list_variables (const char *command, char **argv, int argc)
{
struct frame_info *frame;
+ int raw_arg = 0;
+ enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
+ enum print_values print_value;
+ int oind = 0;
+ int skip_unavailable = 0;
- if (argc != 1)
- error (_("Usage: PRINT_VALUES"));
+ if (argc > 1)
+ {
+ enum opt
+ {
+ NO_FRAME_FILTERS,
+ SKIP_UNAVAILABLE,
+ };
+ static const struct mi_opt opts[] =
+ {
+ {"-no-frame-filters", NO_FRAME_FILTERS, 0},
+ {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
+ { 0, 0, 0 }
+ };
- frame = get_selected_frame (NULL);
+ while (1)
+ {
+ char *oarg;
+ /* Don't parse 'print-values' as an option. */
+ int opt = mi_getopt ("-stack-list-variables", argc - 1,
+ argv, opts, &oind, &oarg);
+ if (opt < 0)
+ break;
+ switch ((enum opt) opt)
+ {
+ case NO_FRAME_FILTERS:
+ raw_arg = oind;
+ break;
+ case SKIP_UNAVAILABLE:
+ skip_unavailable = 1;
+ break;
+ }
+ }
+ }
+
+ /* After the last option is parsed, there should be only
+ 'print-values'. */
+ if (argc - oind != 1)
+ error (_("-stack-list-variables: Usage: [--no-frame-filters] " \
+ "[--skip-unavailable] PRINT_VALUES"));
- list_args_or_locals (all, parse_print_values (argv[0]), frame);
+ frame = get_selected_frame (NULL);
+ print_value = mi_parse_print_values (argv[oind]);
+
+ if (! raw_arg && frame_filters)
+ {
+ frame_filter_flags flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS;
+
+ result = mi_apply_ext_lang_frame_filter (frame, flags,
+ print_value,
+ current_uiout, 0, 0);
+ }
+
+ /* Run the inbuilt backtrace if there are no filters registered, or
+ if "--no-frame-filters" has been specified from the command. */
+ if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS)
+ {
+ list_args_or_locals (all, print_value, frame,
+ skip_unavailable);
+ }
}
/* Print single local or argument. ARG must be already read in. For
WHAT and VALUES see list_args_or_locals.
Errors are printed as if they would be the parameter value. Use
- zeroed ARG iff it should not be printed according to VALUES. */
+ zeroed ARG iff it should not be printed according to VALUES. If
+ SKIP_UNAVAILABLE is true, only print ARG if it is available. */
static void
list_arg_or_local (const struct frame_arg *arg, enum what_to_list what,
- enum print_values values)
+ enum print_values values, int skip_unavailable)
{
- struct cleanup *old_chain;
- struct cleanup *cleanup_tuple = NULL;
struct ui_out *uiout = current_uiout;
- struct ui_file *stb;
-
- stb = mem_fileopen ();
- old_chain = make_cleanup_ui_file_delete (stb);
gdb_assert (!arg->val || !arg->error);
gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL
|| (arg->entry_kind == print_entry_values_only
&& (arg->val || arg->error)));
+ if (skip_unavailable && arg->val != NULL
+ && (value_entirely_unavailable (arg->val)
+ /* A scalar object that does not have all bits available is
+ also considered unavailable, because all bits contribute
+ to its representation. */
+ || (val_print_scalar_type_p (value_type (arg->val))
+ && !value_bytes_available (arg->val,
+ value_embedded_offset (arg->val),
+ TYPE_LENGTH (value_type (arg->val))))))
+ return;
+
+ gdb::optional<ui_out_emit_tuple> tuple_emitter;
if (values != PRINT_NO_VALUES || what == all)
- cleanup_tuple = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
+ tuple_emitter.emplace (uiout, nullptr);
- fputs_filtered (SYMBOL_PRINT_NAME (arg->sym), stb);
+ string_file stb;
+
+ stb.puts (SYMBOL_PRINT_NAME (arg->sym));
if (arg->entry_kind == print_entry_values_only)
- fputs_filtered ("@entry", stb);
- ui_out_field_stream (uiout, "name", stb);
+ stb.puts ("@entry");
+ uiout->field_stream ("name", stb);
if (what == all && SYMBOL_IS_ARGUMENT (arg->sym))
- ui_out_field_int (uiout, "arg", 1);
+ uiout->field_int ("arg", 1);
if (values == PRINT_SIMPLE_VALUES)
{
check_typedef (arg->sym->type);
- type_print (arg->sym->type, "", stb, -1);
- ui_out_field_stream (uiout, "type", stb);
+ type_print (arg->sym->type, "", &stb, -1);
+ uiout->field_stream ("type", stb);
}
if (arg->val || arg->error)
{
- volatile struct gdb_exception except;
+ const char *error_message = NULL;
if (arg->error)
- except.message = arg->error;
+ error_message = arg->error;
else
{
- /* TRY_CATCH has two statements, wrap it in a block. */
-
- TRY_CATCH (except, RETURN_MASK_ERROR)
+ TRY
{
struct value_print_options opts;
- get_raw_print_options (&opts);
+ get_no_prettyformat_print_options (&opts);
opts.deref_ref = 1;
- common_val_print (arg->val, stb, 0, &opts,
+ common_val_print (arg->val, &stb, 0, &opts,
language_def (SYMBOL_LANGUAGE (arg->sym)));
}
+ CATCH (except, RETURN_MASK_ERROR)
+ {
+ error_message = except.message;
+ }
+ END_CATCH
}
- if (except.message)
- fprintf_filtered (stb, _("<error reading variable: %s>"),
- except.message);
- ui_out_field_stream (uiout, "value", stb);
+ if (error_message != NULL)
+ stb.printf (_("<error reading variable: %s>"), error_message);
+ uiout->field_stream ("value", stb);
}
-
- if (values != PRINT_NO_VALUES || what == all)
- do_cleanups (cleanup_tuple);
- do_cleanups (old_chain);
}
-/* Print a list of the locals or the arguments for the currently
- selected frame. If the argument passed is 0, printonly the names
- of the variables, if an argument of 1 is passed, print the values
- as well. */
+/* Print a list of the objects for the frame FI in a certain form,
+ which is determined by VALUES. The objects can be locals,
+ arguments or both, which is determined by WHAT. If SKIP_UNAVAILABLE
+ is true, only print the arguments or local variables whose values
+ are available. */
static void
list_args_or_locals (enum what_to_list what, enum print_values values,
- struct frame_info *fi)
+ struct frame_info *fi, int skip_unavailable)
{
- struct block *block;
+ const struct block *block;
struct symbol *sym;
struct block_iterator iter;
- struct cleanup *cleanup_list;
struct type *type;
- char *name_of_result;
+ const char *name_of_result;
struct ui_out *uiout = current_uiout;
block = get_frame_block (fi, 0);
"unexpected what_to_list: %d", (int) what);
}
- cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result);
+ ui_out_emit_list list_emitter (uiout, name_of_result);
while (block != 0)
{
if (SYMBOL_IS_ARGUMENT (sym))
sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
block, VAR_DOMAIN,
- NULL);
+ NULL).symbol;
else
sym2 = sym;
gdb_assert (sym2 != NULL);
&& TYPE_CODE (type) != TYPE_CODE_UNION)
{
case PRINT_ALL_VALUES:
- read_frame_arg (sym2, fi, &arg, &entryarg);
+ if (SYMBOL_IS_ARGUMENT (sym))
+ read_frame_arg (sym2, fi, &arg, &entryarg);
+ else
+ read_frame_local (sym2, fi, &arg);
}
break;
}
if (arg.entry_kind != print_entry_values_only)
- list_arg_or_local (&arg, what, values);
+ list_arg_or_local (&arg, what, values, skip_unavailable);
if (entryarg.entry_kind != print_entry_values_no)
- list_arg_or_local (&entryarg, what, values);
+ list_arg_or_local (&entryarg, what, values, skip_unavailable);
xfree (arg.error);
xfree (entryarg.error);
}
else
block = BLOCK_SUPERBLOCK (block);
}
- do_cleanups (cleanup_list);
}
void
-mi_cmd_stack_select_frame (char *command, char **argv, int argc)
+mi_cmd_stack_select_frame (const char *command, char **argv, int argc)
{
if (argc == 0 || argc > 1)
error (_("-stack-select-frame: Usage: FRAME_SPEC"));
}
void
-mi_cmd_stack_info_frame (char *command, char **argv, int argc)
+mi_cmd_stack_info_frame (const char *command, char **argv, int argc)
{
if (argc > 0)
error (_("-stack-info-frame: No arguments allowed"));
- print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0);
+ print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0, 1);
}
projects / deliverable / binutils-gdb.git / blobdiff