#include "config.h"
#include "system.h"
#include "tree.h"
#include "flags.h"
#include "toplev.h"
#include "output.h"
#include "rtl.h"
#include "ggc.h"
#include "expr.h"
#include "tm_p.h"
#include "obstack.h"
#include "cpplib.h"
#include "target.h"
static void init_attributes PARAMS ((void));
static const struct attribute_spec *attribute_tables[4];
static bool attributes_initialized = false;
static tree handle_packed_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_nocommon_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_common_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_noreturn_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_noinline_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_always_inline_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_used_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_unused_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_const_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_transparent_union_attribute PARAMS ((tree *, tree, tree,
int, bool *));
static tree handle_constructor_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_destructor_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_mode_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_section_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_aligned_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_weak_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_alias_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_no_instrument_function_attribute PARAMS ((tree *, tree,
tree, int,
bool *));
static tree handle_malloc_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_no_limit_stack_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_pure_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_vector_size_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree vector_size_helper PARAMS ((tree, tree));
static tree handle_deprecated_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_vector_size_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_unavailable_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_weak_import_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static const struct attribute_spec c_common_attribute_table[] =
{
{ "packed", 0, 0, false, false, false,
handle_packed_attribute },
{ "nocommon", 0, 0, true, false, false,
handle_nocommon_attribute },
{ "common", 0, 0, true, false, false,
handle_common_attribute },
{ "noreturn", 0, 0, true, false, false,
handle_noreturn_attribute },
{ "volatile", 0, 0, true, false, false,
handle_noreturn_attribute },
{ "noinline", 0, 0, true, false, false,
handle_noinline_attribute },
{ "always_inline", 0, 0, true, false, false,
handle_always_inline_attribute },
{ "used", 0, 0, true, false, false,
handle_used_attribute },
{ "unused", 0, 0, false, false, false,
handle_unused_attribute },
{ "const", 0, 0, true, false, false,
handle_const_attribute },
{ "transparent_union", 0, 0, false, false, false,
handle_transparent_union_attribute },
{ "constructor", 0, 0, true, false, false,
handle_constructor_attribute },
{ "destructor", 0, 0, true, false, false,
handle_destructor_attribute },
{ "mode", 1, 1, false, true, false,
handle_mode_attribute },
{ "section", 1, 1, true, false, false,
handle_section_attribute },
{ "aligned", 0, 1, false, false, false,
handle_aligned_attribute },
{ "weak", 0, 0, true, false, false,
handle_weak_attribute },
{ "alias", 1, 1, true, false, false,
handle_alias_attribute },
{ "no_instrument_function", 0, 0, true, false, false,
handle_no_instrument_function_attribute },
{ "malloc", 0, 0, true, false, false,
handle_malloc_attribute },
{ "no_stack_limit", 0, 0, true, false, false,
handle_no_limit_stack_attribute },
{ "pure", 0, 0, true, false, false,
handle_pure_attribute },
{ "deprecated", 0, 0, false, false, false,
handle_deprecated_attribute },
{ "vector_size", 1, 1, false, true, false,
handle_vector_size_attribute },
{ "unavailable", 0, 0, false, false, false,
handle_unavailable_attribute },
{ "weak_import", 0, 0, true, false, false,
handle_weak_import_attribute },
{ NULL, 0, 0, false, false, false, NULL }
};
static const struct attribute_spec empty_attribute_table[] =
{
{ NULL, 0, 0, false, false, false, NULL }
};
const struct attribute_spec *format_attribute_table = empty_attribute_table;
const struct attribute_spec *lang_attribute_table = empty_attribute_table;
int lang_attribute_common = 1;
static void
init_attributes ()
{
#ifdef ENABLE_CHECKING
int i;
#endif
attribute_tables[0]
= lang_attribute_common ? c_common_attribute_table : empty_attribute_table;
attribute_tables[1] = lang_attribute_table;
attribute_tables[2] = format_attribute_table;
attribute_tables[3] = targetm.attribute_table;
#ifdef ENABLE_CHECKING
for (i = 0;
i < (int) (sizeof (attribute_tables) / sizeof (attribute_tables[0]));
i++)
{
int j;
for (j = 0; attribute_tables[i][j].name != NULL; j++)
{
const char *name = attribute_tables[i][j].name;
int len = strlen (name);
if (name[0] == '_' && name[1] == '_'
&& name[len - 1] == '_' && name[len - 2] == '_')
abort ();
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 ();
if (attribute_tables[i][j].decl_required
&& attribute_tables[i][j].type_required)
abort ();
if (attribute_tables[i][j].function_type_required
&& !attribute_tables[i][j].type_required)
abort ();
}
}
for (i = 0;
i < (int) (sizeof (attribute_tables) / sizeof (attribute_tables[0]));
i++)
{
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 ();
}
for (i = 0;
i < (int) (sizeof (attribute_tables) / sizeof (attribute_tables[0]));
i++)
{
int j, k, l;
for (j = i + 1;
j < ((int) (sizeof (attribute_tables)
/ sizeof (attribute_tables[0])));
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 ();
}
#endif
attributes_initialized = true;
}
tree
decl_attributes (node, attributes, flags)
tree *node, attributes;
int flags;
{
tree a;
tree returned_attrs = NULL_TREE;
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))
insert_default_attributes (*node);
for (a = attributes; a; a = TREE_CHAIN (a))
{
tree name = TREE_PURPOSE (a);
tree args = TREE_VALUE (a);
tree *anode = node;
const struct attribute_spec *spec = NULL;
bool no_add_attrs = 0;
int i;
for (i = 0;
i < ((int) (sizeof (attribute_tables)
/ sizeof (attribute_tables[0])));
i++)
{
int j;
for (j = 0; attribute_tables[i][j].name != NULL; j++)
{
if (is_attribute_p (attribute_tables[i][j].name, name))
{
spec = &attribute_tables[i][j];
break;
}
}
if (spec != NULL)
break;
}
if (spec == NULL)
{
warning ("`%s' attribute directive ignored",
IDENTIFIER_POINTER (name));
continue;
}
else if (list_length (args) < spec->min_length
|| (spec->max_length >= 0
&& list_length (args) > spec->max_length))
{
error ("wrong number of arguments specified for `%s' attribute",
IDENTIFIER_POINTER (name));
continue;
}
if (spec->decl_required && !DECL_P (*anode))
{
if (flags & ((int) ATTR_FLAG_DECL_NEXT
| (int) ATTR_FLAG_FUNCTION_NEXT
| (int) ATTR_FLAG_ARRAY_NEXT))
{
returned_attrs = tree_cons (name, args, returned_attrs);
continue;
}
else
{
warning ("`%s' attribute does not apply to types",
IDENTIFIER_POINTER (name));
continue;
}
}
if (spec->type_required && DECL_P (*anode))
{
anode = &TREE_TYPE (*anode);
flags &= ~(int) ATTR_FLAG_TYPE_IN_PLACE;
}
if (spec->function_type_required && TREE_CODE (*anode) != FUNCTION_TYPE
&& TREE_CODE (*anode) != METHOD_TYPE)
{
if (TREE_CODE (*anode) == POINTER_TYPE
&& (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);
}
else if (flags & (int) ATTR_FLAG_FUNCTION_NEXT)
{
returned_attrs = tree_cons (name, args, returned_attrs);
continue;
}
if (TREE_CODE (*anode) != FUNCTION_TYPE
&& TREE_CODE (*anode) != METHOD_TYPE)
{
warning ("`%s' attribute only applies to function types",
IDENTIFIER_POINTER (name));
continue;
}
}
if (spec->handler != NULL)
returned_attrs = chainon ((*spec->handler) (anode, name, args,
flags, &no_add_attrs),
returned_attrs);
if (spec->type_required && DECL_P (*node)
&& (TREE_CODE (*node) == VAR_DECL
|| TREE_CODE (*node) == PARM_DECL
|| TREE_CODE (*node) == RESULT_DECL))
{
DECL_MODE (*node) = VOIDmode;
DECL_SIZE (*node) = 0;
layout_decl (*node, 0);
}
if (!no_add_attrs)
{
tree old_attrs;
tree a;
if (DECL_P (*anode))
old_attrs = DECL_ATTRIBUTES (*anode);
else
old_attrs = TYPE_ATTRIBUTES (*anode);
for (a = lookup_attribute (spec->name, old_attrs);
a != NULL_TREE;
a = lookup_attribute (spec->name, TREE_CHAIN (a)))
{
if (simple_cst_equal (TREE_VALUE (a), args) == 1)
break;
}
if (a == NULL_TREE)
{
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);
else
*anode = build_type_attribute_variant (*anode,
tree_cons (name, args,
old_attrs));
}
}
}
return returned_attrs;
}
static tree
handle_packed_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags;
bool *no_add_attrs;
{
tree *type = NULL;
if (DECL_P (*node))
{
if (TREE_CODE (*node) == TYPE_DECL)
type = &TREE_TYPE (*node);
}
else
type = node;
if (type)
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
*type = build_type_copy (*type);
TYPE_PACKED (*type) = 1;
}
else if (TREE_CODE (*node) == FIELD_DECL)
DECL_PACKED (*node) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_nocommon_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
if (TREE_CODE (*node) == VAR_DECL)
DECL_COMMON (*node) = 0;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_common_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
if (TREE_CODE (*node) == VAR_DECL)
DECL_COMMON (*node) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_noreturn_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree type = TREE_TYPE (*node);
if (TREE_CODE (*node) == FUNCTION_DECL)
TREE_THIS_VOLATILE (*node) = 1;
else if (TREE_CODE (type) == POINTER_TYPE
&& TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
TREE_TYPE (*node)
= build_pointer_type
(build_type_variant (TREE_TYPE (type),
TREE_READONLY (TREE_TYPE (type)), 1));
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_noinline_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
if (TREE_CODE (*node) == FUNCTION_DECL)
DECL_UNINLINABLE (*node) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_always_inline_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
if (TREE_CODE (*node) == FUNCTION_DECL)
{
}
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_used_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
if (TREE_CODE (*node) == FUNCTION_DECL)
TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (*node))
= TREE_USED (*node) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_unused_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags;
bool *no_add_attrs;
{
if (DECL_P (*node))
{
tree decl = *node;
if (TREE_CODE (decl) == PARM_DECL
|| TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == LABEL_DECL
|| TREE_CODE (decl) == TYPE_DECL)
TREE_USED (decl) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
}
else
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
*node = build_type_copy (*node);
TREE_USED (*node) = 1;
}
return NULL_TREE;
}
static tree
handle_const_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree type = TREE_TYPE (*node);
if (TREE_CODE (*node) == FUNCTION_DECL)
TREE_READONLY (*node) = 1;
else if (TREE_CODE (type) == POINTER_TYPE
&& TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
TREE_TYPE (*node)
= build_pointer_type
(build_type_variant (TREE_TYPE (type), 1,
TREE_THIS_VOLATILE (TREE_TYPE (type))));
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_transparent_union_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags;
bool *no_add_attrs;
{
tree decl = NULL_TREE;
tree *type = NULL;
int is_type = 0;
if (DECL_P (*node))
{
decl = *node;
type = &TREE_TYPE (decl);
is_type = TREE_CODE (*node) == TYPE_DECL;
}
else if (TYPE_P (*node))
type = node, is_type = 1;
if (is_type
&& TREE_CODE (*type) == UNION_TYPE
&& (decl == 0
|| (TYPE_FIELDS (*type) != 0
&& TYPE_MODE (*type) == DECL_MODE (TYPE_FIELDS (*type)))))
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
*type = build_type_copy (*type);
TYPE_TRANSPARENT_UNION (*type) = 1;
}
else if (decl != 0 && TREE_CODE (decl) == PARM_DECL
&& TREE_CODE (*type) == UNION_TYPE
&& TYPE_MODE (*type) == DECL_MODE (TYPE_FIELDS (*type)))
DECL_TRANSPARENT_UNION (decl) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_constructor_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree decl = *node;
tree type = TREE_TYPE (decl);
if (TREE_CODE (decl) == FUNCTION_DECL
&& TREE_CODE (type) == FUNCTION_TYPE
&& decl_function_context (decl) == 0)
{
DECL_STATIC_CONSTRUCTOR (decl) = 1;
TREE_USED (decl) = 1;
}
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_destructor_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree decl = *node;
tree type = TREE_TYPE (decl);
if (TREE_CODE (decl) == FUNCTION_DECL
&& TREE_CODE (type) == FUNCTION_TYPE
&& decl_function_context (decl) == 0)
{
DECL_STATIC_DESTRUCTOR (decl) = 1;
TREE_USED (decl) = 1;
}
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_mode_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree type = *node;
*no_add_attrs = true;
if (TREE_CODE (TREE_VALUE (args)) != IDENTIFIER_NODE)
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
else
{
int j;
const char *p = IDENTIFIER_POINTER (TREE_VALUE (args));
int len = strlen (p);
enum machine_mode mode = VOIDmode;
tree typefm;
if (len > 4 && p[0] == '_' && p[1] == '_'
&& p[len - 1] == '_' && p[len - 2] == '_')
{
char *newp = (char *) alloca (len - 1);
strcpy (newp, &p[2]);
newp[len - 4] = '\0';
p = newp;
}
if (! strcmp (p, "byte"))
mode = byte_mode;
else if (!strcmp (p, "word"))
mode = word_mode;
else if (! strcmp (p, "pointer"))
mode = ptr_mode;
else
for (j = 0; j < NUM_MACHINE_MODES; j++)
if (!strcmp (p, GET_MODE_NAME (j)))
mode = (enum machine_mode) j;
if (mode == VOIDmode)
error ("unknown machine mode `%s'", p);
else if (0 == (typefm = type_for_mode (mode,
TREE_UNSIGNED (type))))
error ("no data type for mode `%s'", p);
else
*node = typefm;
}
return NULL_TREE;
}
static tree
handle_section_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name ATTRIBUTE_UNUSED;
tree args;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree decl = *node;
if (targetm.have_named_sections)
{
if ((TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == VAR_DECL)
&& TREE_CODE (TREE_VALUE (args)) == STRING_CST)
{
if (TREE_CODE (decl) == VAR_DECL
&& current_function_decl != NULL_TREE
&& ! TREE_STATIC (decl))
{
error_with_decl (decl,
"section attribute cannot be specified for local variables");
*no_add_attrs = true;
}
else if (DECL_SECTION_NAME (decl) != NULL_TREE
&& strcmp (TREE_STRING_POINTER (DECL_SECTION_NAME (decl)),
TREE_STRING_POINTER (TREE_VALUE (args))) != 0)
{
error_with_decl (*node,
"section of `%s' conflicts with previous declaration");
*no_add_attrs = true;
}
else
DECL_SECTION_NAME (decl) = TREE_VALUE (args);
}
else
{
error_with_decl (*node,
"section attribute not allowed for `%s'");
*no_add_attrs = true;
}
}
else
{
error_with_decl (*node,
"section attributes are not supported for this target");
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_aligned_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name ATTRIBUTE_UNUSED;
tree args;
int flags;
bool *no_add_attrs;
{
tree decl = NULL_TREE;
tree *type = NULL;
int is_type = 0;
tree align_expr = (args ? TREE_VALUE (args)
: size_int (BIGGEST_ALIGNMENT / BITS_PER_UNIT));
int i;
if (DECL_P (*node))
{
decl = *node;
type = &TREE_TYPE (decl);
is_type = TREE_CODE (*node) == TYPE_DECL;
}
else if (TYPE_P (*node))
type = node, is_type = 1;
while (TREE_CODE (align_expr) == NOP_EXPR
|| TREE_CODE (align_expr) == CONVERT_EXPR
|| TREE_CODE (align_expr) == NON_LVALUE_EXPR)
align_expr = TREE_OPERAND (align_expr, 0);
if (TREE_CODE (align_expr) != INTEGER_CST)
{
error ("requested alignment is not a constant");
*no_add_attrs = true;
}
else if ((i = tree_log2 (align_expr)) == -1)
{
error ("requested alignment is not a power of 2");
*no_add_attrs = true;
}
else if (i > HOST_BITS_PER_INT - 2)
{
error ("requested alignment is too large");
*no_add_attrs = true;
}
else if (is_type)
{
if (decl && TREE_TYPE (decl) != error_mark_node
&& DECL_ORIGINAL_TYPE (decl) == NULL_TREE)
{
tree tt = TREE_TYPE (decl);
*type = build_type_copy (*type);
DECL_ORIGINAL_TYPE (decl) = tt;
TYPE_NAME (*type) = decl;
TREE_USED (*type) = TREE_USED (decl);
TREE_TYPE (decl) = *type;
}
else if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
*type = build_type_copy (*type);
TYPE_ALIGN (*type) = (1 << i) * BITS_PER_UNIT;
TYPE_USER_ALIGN (*type) = 1;
}
else if (TREE_CODE (decl) != VAR_DECL
&& TREE_CODE (decl) != FIELD_DECL)
{
error_with_decl (decl,
"alignment may not be specified for `%s'");
*no_add_attrs = true;
}
else
{
DECL_ALIGN (decl) = (1 << i) * BITS_PER_UNIT;
DECL_USER_ALIGN (decl) = 1;
}
return NULL_TREE;
}
static tree
handle_weak_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name ATTRIBUTE_UNUSED;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs ATTRIBUTE_UNUSED;
{
declare_weak (*node);
return NULL_TREE;
}
static tree
handle_alias_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree decl = *node;
if ((TREE_CODE (decl) == FUNCTION_DECL && DECL_INITIAL (decl))
|| (TREE_CODE (decl) != FUNCTION_DECL && ! DECL_EXTERNAL (decl)))
{
error_with_decl (decl,
"`%s' defined both normally and as an alias");
*no_add_attrs = true;
}
else if (decl_function_context (decl) == 0)
{
tree id;
id = TREE_VALUE (args);
if (TREE_CODE (id) != STRING_CST)
{
error ("alias arg not a string");
*no_add_attrs = true;
return NULL_TREE;
}
id = get_identifier (TREE_STRING_POINTER (id));
TREE_USED (id) = 1;
if (TREE_CODE (decl) == FUNCTION_DECL)
DECL_INITIAL (decl) = error_mark_node;
else
DECL_EXTERNAL (decl) = 0;
assemble_alias (decl, id);
}
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_no_instrument_function_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree decl = *node;
if (TREE_CODE (decl) != FUNCTION_DECL)
{
error_with_decl (decl,
"`%s' attribute applies only to functions",
IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
else if (DECL_INITIAL (decl))
{
error_with_decl (decl,
"can't set `%s' attribute after definition",
IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
else
DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (decl) = 1;
return NULL_TREE;
}
static tree
handle_malloc_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
if (TREE_CODE (*node) == FUNCTION_DECL)
DECL_IS_MALLOC (*node) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_no_limit_stack_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree decl = *node;
if (TREE_CODE (decl) != FUNCTION_DECL)
{
error_with_decl (decl,
"`%s' attribute applies only to functions",
IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
else if (DECL_INITIAL (decl))
{
error_with_decl (decl,
"can't set `%s' attribute after definition",
IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
else
DECL_NO_LIMIT_STACK (decl) = 1;
return NULL_TREE;
}
static tree
handle_pure_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
if (TREE_CODE (*node) == FUNCTION_DECL)
DECL_IS_PURE (*node) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
static tree
handle_deprecated_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags;
bool *no_add_attrs;
{
tree type = NULL_TREE;
int warn = 0;
const char *what = NULL;
if (DECL_P (*node))
{
tree decl = *node;
type = TREE_TYPE (decl);
if (TREE_CODE (decl) == TYPE_DECL
|| TREE_CODE (decl) == PARM_DECL
|| TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == FIELD_DECL)
TREE_DEPRECATED (decl) = 1;
else
warn = 1;
}
else if (TYPE_P (*node))
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
*node = build_type_copy (*node);
TREE_DEPRECATED (*node) = 1;
type = *node;
}
else
warn = 1;
if (warn)
{
*no_add_attrs = true;
if (type && TYPE_NAME (type))
{
if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
what = IDENTIFIER_POINTER (TYPE_NAME (*node));
else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& DECL_NAME (TYPE_NAME (type)))
what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
}
if (what)
warning ("`%s' attribute ignored for `%s'",
IDENTIFIER_POINTER (name), what);
else
warning ("`%s' attribute ignored",
IDENTIFIER_POINTER (name));
}
return NULL_TREE;
}
static tree
handle_vector_size_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
unsigned HOST_WIDE_INT vecsize, nunits;
enum machine_mode mode, orig_mode, new_mode;
tree type = *node, new_type;
*no_add_attrs = true;
if (! host_integerp (TREE_VALUE (args), 1))
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
return NULL_TREE;
}
vecsize = tree_low_cst (TREE_VALUE (args), 1);
while (POINTER_TYPE_P (type)
|| TREE_CODE (type) == FUNCTION_TYPE
|| TREE_CODE (type) == ARRAY_TYPE)
type = TREE_TYPE (type);
orig_mode = TYPE_MODE (type);
if (TREE_CODE (type) == RECORD_TYPE
|| (GET_MODE_CLASS (orig_mode) != MODE_FLOAT
&& GET_MODE_CLASS (orig_mode) != MODE_INT)
|| ! host_integerp (TYPE_SIZE_UNIT (type), 1))
{
error ("invalid vector type for attribute `%s'",
IDENTIFIER_POINTER (name));
return NULL_TREE;
}
nunits = vecsize / tree_low_cst (TYPE_SIZE_UNIT (type), 1);
new_mode = VOIDmode;
for (mode = GET_CLASS_NARROWEST_MODE (GET_MODE_CLASS (orig_mode) == MODE_INT
? MODE_VECTOR_INT
: MODE_VECTOR_FLOAT);
mode != VOIDmode;
mode = GET_MODE_WIDER_MODE (mode))
if (vecsize == GET_MODE_SIZE (mode)
&& nunits == (unsigned HOST_WIDE_INT) GET_MODE_NUNITS (mode))
{
new_mode = mode;
break;
}
if (new_mode == VOIDmode)
error ("no vector mode with the size and type specified could be found");
else
{
new_type = type_for_mode (new_mode, TREE_UNSIGNED (type));
if (!new_type)
error ("no vector mode with the size and type specified could be found");
else
*node = vector_size_helper (*node, new_type);
}
return NULL_TREE;
}
static tree
vector_size_helper (type, bottom)
tree type, bottom;
{
tree inner, outer;
if (POINTER_TYPE_P (type))
{
inner = vector_size_helper (TREE_TYPE (type), bottom);
outer = build_pointer_type (inner);
}
else if (TREE_CODE (type) == ARRAY_TYPE)
{
inner = vector_size_helper (TREE_TYPE (type), bottom);
outer = build_array_type (inner, TYPE_VALUES (type));
}
else if (TREE_CODE (type) == FUNCTION_TYPE)
{
inner = vector_size_helper (TREE_TYPE (type), bottom);
outer = build_function_type (inner, TYPE_VALUES (type));
}
else
return bottom;
TREE_READONLY (outer) = TREE_READONLY (type);
TREE_THIS_VOLATILE (outer) = TREE_THIS_VOLATILE (type);
return outer;
}
static tree
handle_unavailable_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
tree type = NULL_TREE;
int warn = 0;
char *what = NULL;
if (DECL_P (*node))
{
tree decl = *node;
type = TREE_TYPE (decl);
if (TREE_CODE (decl) == TYPE_DECL
|| TREE_CODE (decl) == PARM_DECL
|| TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == FIELD_DECL)
{
TREE_DEPRECATED (decl) = 1;
TREE_UNAVAILABLE (decl) = 1;
}
else
warn = 1;
}
else if (TYPE_P (*node))
{
if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
*node = build_type_copy (*node);
TREE_DEPRECATED (*node) = 1;
TREE_UNAVAILABLE (*node) = 1;
type = *node;
}
else
warn = 1;
if (warn)
{
*no_add_attrs = true;
if (type && TYPE_NAME (type))
{
if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
what = IDENTIFIER_POINTER (TYPE_NAME (*node));
else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& DECL_NAME (TYPE_NAME (type)))
what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
}
if (what)
warning ("`%s' attribute ignored for `%s'",
IDENTIFIER_POINTER (name), what);
else
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
}
return NULL_TREE;
}
static tree handle_weak_import_attribute (node, name, args, flags, no_add_attrs)
tree *node;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
if ((flags & (int) ATTR_FLAG_FUNCTION_DEF) == 0 && DECL_EXTERNAL (*node))
DECL_WEAK_IMPORT (*node) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
void
split_specs_attrs (specs_attrs, declspecs, prefix_attributes)
tree specs_attrs;
tree *declspecs, *prefix_attributes;
{
tree t, s, a, next, specs, attrs;
if (specs_attrs != NULL_TREE
&& TREE_CODE (specs_attrs) == INTEGER_CST)
{
*declspecs = NULL_TREE;
*prefix_attributes = NULL_TREE;
return;
}
if (specs_attrs != NULL_TREE
&& TREE_CODE (specs_attrs) != TREE_LIST)
{
*declspecs = specs_attrs;
*prefix_attributes = NULL_TREE;
return;
}
specs = s = NULL_TREE;
attrs = a = NULL_TREE;
for (t = specs_attrs; t; t = next)
{
next = TREE_CHAIN (t);
if (TREE_VALUE (t) != NULL_TREE)
{
if (specs == NULL_TREE)
specs = s = t;
else
{
TREE_CHAIN (s) = t;
s = t;
}
}
else if (TREE_PURPOSE (t) != NULL_TREE)
{
if (attrs == NULL_TREE)
attrs = a = TREE_PURPOSE (t);
else
{
TREE_CHAIN (a) = TREE_PURPOSE (t);
a = TREE_PURPOSE (t);
}
while (TREE_CHAIN (a) != NULL_TREE)
a = TREE_CHAIN (a);
}
}
if (s != NULL_TREE)
TREE_CHAIN (s) = NULL_TREE;
if (a != NULL_TREE)
TREE_CHAIN (a) = NULL_TREE;
*declspecs = specs;
*prefix_attributes = attrs;
}
tree
strip_attrs (specs_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;
}