Subversion Repositories openrisc

/* 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"

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, handle_user_attribute };

/* 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 = TREE_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;

}