/* Functions dealing with attribute handling, used by most front ends.
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003 Free Software Foundation, Inc.
+ 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
#include "output.h"
#include "rtl.h"
#include "ggc.h"
-#include "expr.h"
#include "tm_p.h"
#include "cpplib.h"
#include "target.h"
/* The name must not begin and end with __. */
const char *name = attribute_tables[i][j].name;
int len = strlen (name);
- if (name[0] == '_' && name[1] == '_'
- && name[len - 1] == '_' && name[len - 2] == '_')
- abort ();
+
+ gcc_assert (!(name[0] == '_' && name[1] == '_'
+ && name[len - 1] == '_' && name[len - 2] == '_'));
+
/* The minimum and maximum lengths must be consistent. */
- if (attribute_tables[i][j].min_length < 0)
- abort ();
- if (attribute_tables[i][j].max_length != -1
- && (attribute_tables[i][j].max_length
- < attribute_tables[i][j].min_length))
- abort ();
+ gcc_assert (attribute_tables[i][j].min_length >= 0);
+
+ gcc_assert (attribute_tables[i][j].max_length == -1
+ || (attribute_tables[i][j].max_length
+ >= attribute_tables[i][j].min_length));
+
/* An attribute cannot require both a DECL and a TYPE. */
- if (attribute_tables[i][j].decl_required
- && attribute_tables[i][j].type_required)
- abort ();
+ gcc_assert (!attribute_tables[i][j].decl_required
+ || !attribute_tables[i][j].type_required);
+
/* If an attribute requires a function type, in particular
it requires a type. */
- if (attribute_tables[i][j].function_type_required
- && !attribute_tables[i][j].type_required)
- abort ();
+ gcc_assert (!attribute_tables[i][j].function_type_required
+ || attribute_tables[i][j].type_required);
}
}
int j, k;
for (j = 0; attribute_tables[i][j].name != NULL; j++)
for (k = j + 1; attribute_tables[i][k].name != NULL; k++)
- if (!strcmp (attribute_tables[i][j].name,
- attribute_tables[i][k].name))
- abort ();
+ gcc_assert (strcmp (attribute_tables[i][j].name,
+ attribute_tables[i][k].name));
}
/* Check that no name occurs in more than one table. */
for (i = 0; i < ARRAY_SIZE (attribute_tables); i++)
for (j = i + 1; j < ARRAY_SIZE (attribute_tables); j++)
for (k = 0; attribute_tables[i][k].name != NULL; k++)
for (l = 0; attribute_tables[j][l].name != NULL; l++)
- if (!strcmp (attribute_tables[i][k].name,
- attribute_tables[j][l].name))
- abort ();
+ gcc_assert (strcmp (attribute_tables[i][k].name,
+ attribute_tables[j][l].name));
}
#endif
information, in the form of a bitwise OR of flags in enum attribute_flags
from tree.h. Depending on these flags, some attributes may be
returned to be applied at a later stage (for example, to apply
- a decl attribute to the declaration rather than to its type). If
- ATTR_FLAG_BUILT_IN is not set and *NODE is a DECL, then also consider
- whether there might be some default attributes to apply to this DECL;
- if so, decl_attributes will be called recursively with those attributes
- and ATTR_FLAG_BUILT_IN set. */
+ a decl attribute to the declaration rather than to its type). */
tree
decl_attributes (tree *node, tree attributes, int flags)
if (!attributes_initialized)
init_attributes ();
- (*targetm.insert_attributes) (*node, &attributes);
-
- if (DECL_P (*node) && TREE_CODE (*node) == FUNCTION_DECL
- && !(flags & (int) ATTR_FLAG_BUILT_IN))
- (*lang_hooks.insert_default_attributes) (*node);
+ targetm.insert_attributes (*node, &attributes);
for (a = attributes; a; a = TREE_CHAIN (a))
{
tree *anode = node;
const struct attribute_spec *spec = NULL;
bool no_add_attrs = 0;
+ tree fn_ptr_tmp = NULL_TREE;
size_t i;
for (i = 0; i < ARRAY_SIZE (attribute_tables); i++)
&& (TREE_CODE (TREE_TYPE (*anode)) == FUNCTION_TYPE
|| TREE_CODE (TREE_TYPE (*anode)) == METHOD_TYPE))
{
- if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
- *anode = build_type_copy (*anode);
- anode = &TREE_TYPE (*anode);
+ /* OK, this is a bit convoluted. We can't just make a copy
+ of the pointer type and modify its TREE_TYPE, because if
+ we change the attributes of the target type the pointer
+ type needs to have a different TYPE_MAIN_VARIANT. So we
+ pull out the target type now, frob it as appropriate, and
+ rebuild the pointer type later.
+
+ This would all be simpler if attributes were part of the
+ declarator, grumble grumble. */
+ fn_ptr_tmp = TREE_TYPE (*anode);
+ anode = &fn_ptr_tmp;
+ flags &= ~(int) ATTR_FLAG_TYPE_IN_PLACE;
}
else if (flags & (int) ATTR_FLAG_FUNCTION_NEXT)
{
if (DECL_P (*anode))
DECL_ATTRIBUTES (*anode) = tree_cons (name, args, old_attrs);
else if (flags & (int) ATTR_FLAG_TYPE_IN_PLACE)
- TYPE_ATTRIBUTES (*anode) = tree_cons (name, args, old_attrs);
+ {
+ TYPE_ATTRIBUTES (*anode) = tree_cons (name, args, old_attrs);
+ /* If this is the main variant, also push the attributes
+ out to the other variants. */
+ if (*anode == TYPE_MAIN_VARIANT (*anode))
+ {
+ tree variant;
+ for (variant = *anode; variant;
+ variant = TYPE_NEXT_VARIANT (variant))
+ {
+ if (TYPE_ATTRIBUTES (variant) == old_attrs)
+ TYPE_ATTRIBUTES (variant)
+ = TYPE_ATTRIBUTES (*anode);
+ else if (!lookup_attribute
+ (spec->name, TYPE_ATTRIBUTES (variant)))
+ TYPE_ATTRIBUTES (variant) = tree_cons
+ (name, args, TYPE_ATTRIBUTES (variant));
+ }
+ }
+ }
else
*anode = build_type_attribute_variant (*anode,
tree_cons (name, args,
old_attrs));
}
}
- }
-
- return returned_attrs;
-}
-
-/* Split SPECS_ATTRS, a list of declspecs and prefix attributes, into two
- lists. SPECS_ATTRS may also be just a typespec (eg: RECORD_TYPE).
-
- The head of the declspec list is stored in DECLSPECS.
- The head of the attribute list is stored in PREFIX_ATTRIBUTES.
-
- Note that attributes in SPECS_ATTRS are stored in the TREE_PURPOSE of
- the list elements. We drop the containing TREE_LIST nodes and link the
- resulting attributes together the way decl_attributes expects them. */
-
-void
-split_specs_attrs (tree specs_attrs, tree *declspecs, tree *prefix_attributes)
-{
- tree t, s, a, next, specs, attrs;
-
- /* This can happen after an __extension__ in pedantic mode. */
- if (specs_attrs != NULL_TREE
- && TREE_CODE (specs_attrs) == INTEGER_CST)
- {
- *declspecs = NULL_TREE;
- *prefix_attributes = NULL_TREE;
- return;
- }
-
- /* This can happen in c++ (eg: decl: typespec initdecls ';'). */
- if (specs_attrs != NULL_TREE
- && TREE_CODE (specs_attrs) != TREE_LIST)
- {
- *declspecs = specs_attrs;
- *prefix_attributes = NULL_TREE;
- return;
- }
-
- /* Remember to keep the lists in the same order, element-wise. */
- specs = s = NULL_TREE;
- attrs = a = NULL_TREE;
- for (t = specs_attrs; t; t = next)
- {
- next = TREE_CHAIN (t);
- /* Declspecs have a non-NULL TREE_VALUE. */
- if (TREE_VALUE (t) != NULL_TREE)
- {
- if (specs == NULL_TREE)
- specs = s = t;
- else
- {
- TREE_CHAIN (s) = t;
- s = t;
- }
- }
- /* The TREE_PURPOSE may also be empty in the case of
- __attribute__(()). */
- else if (TREE_PURPOSE (t) != NULL_TREE)
+ if (fn_ptr_tmp)
{
- if (attrs == NULL_TREE)
- attrs = a = TREE_PURPOSE (t);
+ /* Rebuild the function pointer type and put it in the
+ appropriate place. */
+ fn_ptr_tmp = build_pointer_type (fn_ptr_tmp);
+ if (DECL_P (*node))
+ TREE_TYPE (*node) = fn_ptr_tmp;
else
{
- TREE_CHAIN (a) = TREE_PURPOSE (t);
- a = TREE_PURPOSE (t);
+ gcc_assert (TREE_CODE (*node) == POINTER_TYPE);
+ *node = fn_ptr_tmp;
}
- /* More attrs can be linked here, move A to the end. */
- while (TREE_CHAIN (a) != NULL_TREE)
- a = TREE_CHAIN (a);
}
}
- /* Terminate the lists. */
- if (s != NULL_TREE)
- TREE_CHAIN (s) = NULL_TREE;
- if (a != NULL_TREE)
- TREE_CHAIN (a) = NULL_TREE;
-
- /* All done. */
- *declspecs = specs;
- *prefix_attributes = attrs;
-}
-
-/* Strip attributes from SPECS_ATTRS, a list of declspecs and attributes.
- This function is used by the parser when a rule will accept attributes
- in a particular position, but we don't want to support that just yet.
-
- A warning is issued for every ignored attribute. */
-
-tree
-strip_attrs (tree specs_attrs)
-{
- tree specs, attrs;
-
- split_specs_attrs (specs_attrs, &specs, &attrs);
-
- while (attrs)
- {
- warning ("`%s' attribute ignored",
- IDENTIFIER_POINTER (TREE_PURPOSE (attrs)));
- attrs = TREE_CHAIN (attrs);
- }
-
- return specs;
+ return returned_attrs;
}
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