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/* Public header file for plugins to include.

   Copyright (C) 2009, 2010 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3, or (at your option)

any later version.

GCC is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

#ifndef GCC_PLUGIN_H

#define GCC_PLUGIN_H

#ifndef IN_GCC

#define IN_GCC

#endif

#include "config.h"

#include "system.h"

#include "highlev-plugin-common.h"

#include "hashtab.h"

/* Event names.  */

enum plugin_event

{

# define DEFEVENT(NAME) NAME,

# include "plugin.def"

# undef DEFEVENT

  PLUGIN_EVENT_FIRST_DYNAMIC

};

extern const char **plugin_event_name;

struct plugin_argument

{

  char *key;    /* key of the argument.  */

  char *value;  /* value is optional and can be NULL.  */

};

/* Additional information about the plugin. Used by --help and --version. */

struct plugin_info

{

  const char *version;

  const char *help;

};

/* Represents the gcc version. Used to avoid using an incompatible plugin. */

struct plugin_gcc_version

{

  const char *basever;

  const char *datestamp;

  const char *devphase;

  const char *revision;

  const char *configuration_arguments;

};

/* Object that keeps track of the plugin name and its arguments. */

struct plugin_name_args

{

  char *base_name;              /* Short name of the plugin (filename without

                                   .so suffix). */

  const char *full_name;        /* Path to the plugin as specified with

                                   -fplugin=. */

  int argc;                     /* Number of arguments specified with

                                   -fplugin-arg-... */

  struct plugin_argument *argv; /* Array of ARGC key-value pairs. */

  const char *version;          /* Version string provided by plugin. */

  const char *help;             /* Help string provided by plugin. */

};

/* The default version check. Compares every field in VERSION. */

extern bool plugin_default_version_check (struct plugin_gcc_version *,

                                          struct plugin_gcc_version *);

/* Function type for the plugin initialization routine. Each plugin module

   should define this as an externally-visible function with name

   "plugin_init."

   PLUGIN_INFO - plugin invocation information.

   VERSION     - the plugin_gcc_version symbol of GCC.

   Returns 0 if initialization finishes successfully.  */

typedef int (*plugin_init_func) (struct plugin_name_args *plugin_info,

                                 struct plugin_gcc_version *version);

#ifdef __cplusplus

extern "C" {

#endif

/* Declaration for "plugin_init" function so that it doesn't need to be

   duplicated in every plugin.  */

extern int plugin_init (struct plugin_name_args *plugin_info,

                        struct plugin_gcc_version *version);

#ifdef __cplusplus

}

#endif

/* Function type for a plugin callback routine.

   GCC_DATA  - event-specific data provided by GCC

   USER_DATA - plugin-specific data provided by the plugin  */

typedef void (*plugin_callback_func) (void *gcc_data, void *user_data);

/* Called from the plugin's initialization code. Register a single callback.

   This function can be called multiple times.

   PLUGIN_NAME - display name for this plugin

   EVENT       - which event the callback is for

   CALLBACK    - the callback to be called at the event

   USER_DATA   - plugin-provided data.

*/

/* Number of event ids / names registered so far.  */

extern int get_event_last (void);

int get_named_event_id (const char *name, enum insert_option insert);

/* This is also called without a callback routine for the

   PLUGIN_PASS_MANAGER_SETUP, PLUGIN_INFO, PLUGIN_REGISTER_GGC_ROOTS and

   PLUGIN_REGISTER_GGC_CACHES pseudo-events, with a specific user_data.

  */

extern void register_callback (const char *plugin_name,

                               int event,

                               plugin_callback_func callback,

                               void *user_data);

extern int unregister_callback (const char *plugin_name, int event);

#endif /* GCC_PLUGIN_H */