/* Low level packing and unpacking of values for GDB, the GNU Debugger.
- Copyright (C) 1986-2000, 2002-2012 Free Software Foundation, Inc.
+ Copyright (C) 1986-2013 Free Software Foundation, Inc.
This file is part of GDB.
{
int idx1 = 0, idx2 = 0;
- /* This routine is used by printing routines, where we should
- already have read the value. Note that we only know whether a
- value chunk is available if we've tried to read it. */
+ /* See function description in value.h. */
gdb_assert (!val1->lazy && !val2->lazy);
while (length > 0)
void
set_value_parent (struct value *value, struct value *parent)
{
+ struct value *old = value->parent;
+
value->parent = parent;
+ if (parent != NULL)
+ value_incref (parent);
+ value_free (old);
}
gdb_byte *
int *real_type_found)
{
struct value_print_options opts;
- struct value *target;
struct type *result;
get_user_print_options (&opts);
result = value_type (value);
if (opts.objectprint)
{
- if (TYPE_CODE (result) == TYPE_CODE_PTR
+ /* If result's target type is TYPE_CODE_STRUCT, proceed to
+ fetch its rtti type. */
+ if ((TYPE_CODE (result) == TYPE_CODE_PTR
|| TYPE_CODE (result) == TYPE_CODE_REF)
+ && TYPE_CODE (check_typedef (TYPE_TARGET_TYPE (result)))
+ == TYPE_CODE_STRUCT)
{
struct type *real_type;
{
struct type *type1;
struct type *type2;
- int len;
type1 = check_typedef (value_type (val1));
type2 = check_typedef (value_type (val2));
- len = TYPE_LENGTH (type1);
- if (len != TYPE_LENGTH (type2))
+ if (TYPE_LENGTH (type1) != TYPE_LENGTH (type2))
return 0;
- return (memcmp (value_contents (val1), value_contents (val2), len) == 0);
+ return (memcmp (value_contents (val1), value_contents (val2),
+ TYPE_LENGTH (type1)) == 0);
}
int
{
return value->modifiable;
}
-void
-deprecated_set_value_modifiable (struct value *value, int modifiable)
-{
- value->modifiable = modifiable;
-}
\f
/* Return a mark in the value chain. All values allocated after the
mark is obtained (except for those released) are subject to being freed
}
val->unavailable = VEC_copy (range_s, arg->unavailable);
- val->parent = arg->parent;
- if (val->parent)
- value_incref (val->parent);
+ set_value_parent (val, arg->parent);
if (VALUE_LVAL (val) == lval_computed)
{
const struct lval_funcs *funcs = val->location.computed.funcs;
return NULL;
}
+/* Complete NAME by comparing it to the names of internal variables.
+ Returns a vector of newly allocated strings, or NULL if no matches
+ were found. */
+
+VEC (char_ptr) *
+complete_internalvar (const char *name)
+{
+ VEC (char_ptr) *result = NULL;
+ struct internalvar *var;
+ int len;
+
+ len = strlen (name);
+
+ for (var = internalvars; var; var = var->next)
+ if (strncmp (var->name, name, len) == 0)
+ {
+ char *r = xstrdup (var->name);
+
+ VEC_safe_push (char_ptr, result, r);
+ }
+
+ return result;
+}
/* Create an internal variable with name NAME and with a void value.
NAME should not normally include a dollar sign. */
static void
function_destroyer (struct cmd_list_element *self, void *ignore)
{
- xfree (self->name);
+ xfree ((char *) self->name);
xfree (self->doc);
}
printf_filtered (("\n"));
}
if (!varseen)
- printf_unfiltered (_("No debugger convenience variables now defined.\n"
- "Convenience variables have "
- "names starting with \"$\";\n"
- "use \"set\" as in \"set "
- "$foo = 5\" to define them.\n"));
+ {
+ /* This text does not mention convenience functions on purpose.
+ The user can't create them except via Python, and if Python support
+ is installed this message will never be printed ($_streq will
+ exist). */
+ printf_unfiltered (_("No debugger convenience variables now defined.\n"
+ "Convenience variables have "
+ "names starting with \"$\";\n"
+ "use \"set\" as in \"set "
+ "$foo = 5\" to define them.\n"));
+ }
}
\f
/* Extract a value as a C number (either long or double).
v->offset = (value_embedded_offset (arg1)
+ offset
+ (bitpos - v->bitpos) / 8);
- v->parent = arg1;
- value_incref (v->parent);
+ set_value_parent (v, arg1);
if (!value_lazy (arg1))
value_fetch_lazy (v);
}
}
\f
+/* Return the return value convention that will be used for the
+ specified type. */
+
+enum return_value_convention
+struct_return_convention (struct gdbarch *gdbarch,
+ struct value *function, struct type *value_type)
+{
+ enum type_code code = TYPE_CODE (value_type);
+
+ if (code == TYPE_CODE_ERROR)
+ error (_("Function return type unknown."));
+
+ /* Probe the architecture for the return-value convention. */
+ return gdbarch_return_value (gdbarch, function, value_type,
+ NULL, NULL, NULL);
+}
+
/* Return true if the function returning the specified type is using
the convention of returning structures in memory (passing in the
address as a hidden first parameter). */
using_struct_return (struct gdbarch *gdbarch,
struct value *function, struct type *value_type)
{
- enum type_code code = TYPE_CODE (value_type);
-
- if (code == TYPE_CODE_ERROR)
- error (_("Function return type unknown."));
-
- if (code == TYPE_CODE_VOID)
+ if (TYPE_CODE (value_type) == TYPE_CODE_VOID)
/* A void return value is never in memory. See also corresponding
code in "print_return_value". */
return 0;
- /* Probe the architecture for the return-value convention. */
- return (gdbarch_return_value (gdbarch, function, value_type,
- NULL, NULL, NULL)
+ return (struct_return_convention (gdbarch, function, value_type)
!= RETURN_VALUE_REGISTER_CONVENTION);
}
_initialize_values (void)
{
add_cmd ("convenience", no_class, show_convenience, _("\
-Debugger convenience (\"$foo\") variables.\n\
-These variables are created when you assign them values;\n\
-thus, \"print $foo=1\" gives \"$foo\" the value 1. Values may be any type.\n\
+Debugger convenience (\"$foo\") variables and functions.\n\
+Convenience variables are created when you assign them values;\n\
+thus, \"set $foo=1\" gives \"$foo\" the value 1. Values may be any type.\n\
\n\
A few convenience variables are given values automatically:\n\
\"$_\"holds the last address examined with \"x\" or \"info lines\",\n\
-\"$__\" holds the contents of the last address examined with \"x\"."),
- &showlist);
+\"$__\" holds the contents of the last address examined with \"x\"."
+#ifdef HAVE_PYTHON
+"\n\n\
+Convenience functions are defined via the Python API."
+#endif
+ ), &showlist);
+ add_alias_cmd ("conv", "convenience", no_class, 1, &showlist);
add_cmd ("values", no_set_class, show_values, _("\
Elements of value history around item number IDX (or last ten)."),
projects / deliverable / binutils-gdb.git / blobdiff