Viewing file:  attribute_plugin.c (1.86 KB) -rw-r--r--
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/* Demonstrates how to add custom attributes */
#include "gcc-plugin.h"
#include <stdlib.h>
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
#include "tree-pass.h"
#include "intl.h"
#include "toplev.h"
#include "plugin.h"
#include "diagnostic.h"
int plugin_is_GPL_compatible;
/* Attribute handler callback */
static tree
handle_user_attribute (tree *node, tree name, tree args,
int flags, bool *no_add_attrs)
{
return NULL_TREE;
}
/* Attribute definition */
static struct attribute_spec user_attr =
{ "user", 1, 1, false, false, false, false, handle_user_attribute, NULL };
/* Plugin callback called during attribute registration */
static void
register_attributes (void *event_data, void *data)
{
warning (0, G_("Callback to register attributes"));
register_attribute (&user_attr);
}
/* Callback function to invoke before the function body is genericized. */
void
handle_pre_generic (void *event_data, void *data)
{
tree fndecl = (tree) event_data;
tree arg;
for (arg = DECL_ARGUMENTS(fndecl); arg; arg = DECL_CHAIN (arg)) {
tree attr;
for (attr = DECL_ATTRIBUTES (arg); attr; attr = TREE_CHAIN (attr)) {
tree attrname = TREE_PURPOSE (attr);
tree attrargs = TREE_VALUE (attr);
warning (0, G_("attribute '%s' on param '%s' of function %s"),
IDENTIFIER_POINTER (attrname),
IDENTIFIER_POINTER (DECL_NAME (arg)),
IDENTIFIER_POINTER (DECL_NAME (fndecl))
);
}
}
}
int
plugin_init (struct plugin_name_args *plugin_info,
struct plugin_gcc_version *version)
{
const char *plugin_name = plugin_info->base_name;
register_callback (plugin_name, PLUGIN_PRE_GENERICIZE,
handle_pre_generic, NULL);
register_callback (plugin_name, PLUGIN_ATTRIBUTES, register_attributes, NULL);
return 0;
}
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