{"all", "scalars", "none", NULL};
static const char *print_frame_arguments = "scalars";
+/* The possible choices of "set print entry-values", and the value
+ of this setting. */
+
+const char print_entry_values_no[] = "no";
+const char print_entry_values_only[] = "only";
+const char print_entry_values_preferred[] = "preferred";
+const char print_entry_values_if_needed[] = "if-needed";
+const char print_entry_values_both[] = "both";
+const char print_entry_values_compact[] = "compact";
+const char print_entry_values_default[] = "default";
+static const char *print_entry_values_choices[] =
+{
+ print_entry_values_no,
+ print_entry_values_only,
+ print_entry_values_preferred,
+ print_entry_values_if_needed,
+ print_entry_values_both,
+ print_entry_values_compact,
+ print_entry_values_default,
+ NULL
+};
+const char *print_entry_values = print_entry_values_default;
+
/* Prototypes for local functions. */
static void print_frame_local_vars (struct frame_info *, int,
old_chain = make_cleanup_ui_out_stream_delete (stb);
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)
+ && arg->entry_kind == print_entry_values_compact));
annotate_arg_begin ();
make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (arg->sym),
SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI);
+ if (arg->entry_kind == print_entry_values_compact)
+ {
+ /* It is OK to provide invalid MI-like stream as with
+ PRINT_ENTRY_VALUE_COMPACT we never use MI. */
+ fputs_filtered ("=", stb->stream);
+
+ fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (arg->sym),
+ SYMBOL_LANGUAGE (arg->sym),
+ DMGL_PARAMS | DMGL_ANSI);
+ }
+ if (arg->entry_kind == print_entry_values_only
+ || arg->entry_kind == print_entry_values_compact)
+ fputs_filtered ("@entry", stb->stream);
ui_out_field_stream (uiout, "name", stb);
annotate_arg_name_end ();
ui_out_text (uiout, "=");
void
read_frame_arg (struct symbol *sym, struct frame_info *frame,
- struct frame_arg *argp)
+ struct frame_arg *argp, struct frame_arg *entryargp)
{
- struct value *val = NULL;
- char *val_error = NULL;
+ struct value *val = NULL, *entryval = NULL;
+ char *val_error = NULL, *entryval_error = NULL;
+ int val_equal = 0;
volatile struct gdb_exception except;
- TRY_CATCH (except, RETURN_MASK_ERROR)
+ if (print_entry_values != print_entry_values_only
+ && print_entry_values != print_entry_values_preferred)
+ {
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ val = read_var_value (sym, frame);
+ }
+ if (!val)
+ {
+ val_error = alloca (strlen (except.message) + 1);
+ strcpy (val_error, except.message);
+ }
+ }
+
+ if (SYMBOL_CLASS (sym) == LOC_COMPUTED
+ && print_entry_values != print_entry_values_no
+ && (print_entry_values != print_entry_values_if_needed
+ || !val || value_optimized_out (val)))
+ {
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ const struct symbol_computed_ops *ops;
+
+ ops = SYMBOL_COMPUTED_OPS (sym);
+ entryval = ops->read_variable_at_entry (sym, frame);
+ }
+ if (!entryval)
+ {
+ entryval_error = alloca (strlen (except.message) + 1);
+ strcpy (entryval_error, except.message);
+ }
+
+ if (except.error == NO_ENTRY_VALUE_ERROR
+ || (entryval && value_optimized_out (entryval)))
+ {
+ entryval = NULL;
+ entryval_error = NULL;
+ }
+
+ if (print_entry_values == print_entry_values_compact
+ || print_entry_values == print_entry_values_default)
+ {
+ /* For MI do not try to use print_entry_values_compact for ARGP. */
+
+ if (val && entryval && !ui_out_is_mi_like_p (current_uiout))
+ {
+ unsigned len = TYPE_LENGTH (value_type (val));
+
+ if (!value_optimized_out (val) && value_lazy (val))
+ value_fetch_lazy (val);
+ if (!value_optimized_out (val) && value_lazy (entryval))
+ value_fetch_lazy (entryval);
+ if (!value_optimized_out (val)
+ && value_available_contents_eq (val, 0, entryval, 0, len))
+ {
+ entryval = NULL;
+ val_equal = 1;
+ }
+ }
+
+ /* Try to remove possibly duplicate error message for ENTRYARGP even
+ in MI mode. */
+
+ if (val_error && entryval_error
+ && strcmp (val_error, entryval_error) == 0)
+ {
+ entryval_error = NULL;
+
+ /* Do not se VAL_EQUAL as the same error message may be shown for
+ the entry value even if no entry values are present in the
+ inferior. */
+ }
+ }
+ }
+
+ if (entryval == NULL)
{
- val = read_var_value (sym, frame);
+ if (print_entry_values == print_entry_values_preferred)
+ {
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ val = read_var_value (sym, frame);
+ }
+ if (!val)
+ {
+ val_error = alloca (strlen (except.message) + 1);
+ strcpy (val_error, except.message);
+ }
+ }
+ if (print_entry_values == print_entry_values_only
+ || print_entry_values == print_entry_values_both
+ || (print_entry_values == print_entry_values_preferred
+ && (!val || value_optimized_out (val))))
+ entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym));
}
- if (!val)
+ if ((print_entry_values == print_entry_values_compact
+ || print_entry_values == print_entry_values_if_needed
+ || print_entry_values == print_entry_values_preferred)
+ && (!val || value_optimized_out (val)) && entryval != NULL)
{
- val_error = alloca (strlen (except.message) + 1);
- strcpy (val_error, except.message);
+ val = NULL;
+ val_error = NULL;
}
argp->sym = sym;
argp->val = val;
argp->error = val_error ? xstrdup (val_error) : NULL;
+ if (!val && !val_error)
+ argp->entry_kind = print_entry_values_only;
+ else if ((print_entry_values == print_entry_values_compact
+ || 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));
+ }
+ else
+ argp->entry_kind = print_entry_values_no;
+
+ entryargp->sym = sym;
+ entryargp->val = entryval;
+ entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL;
+ if (!entryval && !entryval_error)
+ entryargp->entry_kind = print_entry_values_no;
+ else
+ entryargp->entry_kind = print_entry_values_only;
}
/* Print the arguments of frame FRAME on STREAM, given the function
ALL_BLOCK_SYMBOLS (b, iter, sym)
{
- struct frame_arg arg;
+ struct frame_arg arg, entryarg;
QUIT;
{
memset (&arg, 0, sizeof (arg));
arg.sym = sym;
+ arg.entry_kind = print_entry_values_no;
+ memset (&entryarg, 0, sizeof (entryarg));
+ entryarg.sym = sym;
+ entryarg.entry_kind = print_entry_values_no;
}
else
- read_frame_arg (sym, frame, &arg);
+ read_frame_arg (sym, frame, &arg, &entryarg);
- print_frame_arg (&arg);
+ if (arg.entry_kind != print_entry_values_only)
+ print_frame_arg (&arg);
+
+ if (entryarg.entry_kind != print_entry_values_no)
+ {
+ if (arg.entry_kind != print_entry_values_only)
+ {
+ ui_out_text (uiout, ", ");
+ ui_out_wrap_hint (uiout, " ");
+ }
+
+ print_frame_arg (&entryarg);
+ }
xfree (arg.error);
+ xfree (entryarg.error);
first = 0;
}
show_disassemble_next_line,
&setlist, &showlist);
disassemble_next_line = AUTO_BOOLEAN_FALSE;
+
+ add_setshow_enum_cmd ("entry-values", class_stack,
+ print_entry_values_choices, &print_entry_values,
+ _("Set printing of function arguments at function "
+ "entry"),
+ _("Show printing of function arguments at function "
+ "entry"),
+ _("\
+GDB can sometimes determine the values of function arguments at entry,\n\
+in addition to their current values. This option tells GDB whether\n\
+to print the current value, the value at entry (marked as val@entry),\n\
+or both. Note that one or both of these values may be <optimized out>."),
+ NULL, NULL, &setprintlist, &showprintlist);
}
projects / deliverable / binutils-gdb.git / blobdiff