static struct conditional_frame *current_cframe = NULL;
+/* Performs the .ifdef (test_defined == 1) and
+ the .ifndef (test_defined == 0) pseudo op. */
+
void
-s_ifdef (arg)
- int arg;
+s_ifdef (test_defined)
+ int test_defined;
{
/* Points to name of symbol. */
- register char *name;
+ char *name;
/* Points to symbol. */
- register symbolS *symbolP;
+ symbolS *symbolP;
struct conditional_frame cframe;
+ char c;
/* Leading whitespace is part of operand. */
SKIP_WHITESPACE ();
as_bad (_("invalid identifier for \".ifdef\""));
obstack_1grow (&cond_obstack, 0);
ignore_rest_of_line ();
+ return;
}
+
+ c = get_symbol_end ();
+ symbolP = symbol_find (name);
+ *input_line_pointer = c;
+
+ initialize_cframe (&cframe);
+
+ if (cframe.dead_tree)
+ cframe.ignoring = 1;
else
{
- char c;
+ int is_defined;
- c = get_symbol_end ();
- symbolP = symbol_find (name);
- *input_line_pointer = c;
+ /* Use the same definition of 'defined' as .equiv so that a symbol
+ which has been referenced but not yet given a value/address is
+ considered to be undefined. */
+ is_defined =
+ symbolP != NULL
+ && S_IS_DEFINED (symbolP)
+ && S_GET_SEGMENT (symbolP) != reg_section;
- initialize_cframe (&cframe);
- cframe.ignoring = cframe.dead_tree || !((symbolP != 0) ^ arg);
- current_cframe = ((struct conditional_frame *)
- obstack_copy (&cond_obstack, &cframe,
- sizeof (cframe)));
+ cframe.ignoring = ! (test_defined ^ is_defined);
+ }
- if (LISTING_SKIP_COND ()
- && cframe.ignoring
- && (cframe.previous_cframe == NULL
- || ! cframe.previous_cframe->ignoring))
- listing_list (2);
+ current_cframe = ((struct conditional_frame *)
+ obstack_copy (&cond_obstack, &cframe,
+ sizeof (cframe)));
+
+ if (LISTING_SKIP_COND ()
+ && cframe.ignoring
+ && (cframe.previous_cframe == NULL
+ || ! cframe.previous_cframe->ignoring))
+ listing_list (2);
- demand_empty_rest_of_line ();
- } /* if a valid identifyer name */
+ demand_empty_rest_of_line ();
}
void