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/* Definitions for code generation pass of GNU compiler.
   Copyright (C) 2001, 2004, 2007, 2008, 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_LIBFUNCS_H
#define GCC_LIBFUNCS_H
 
#include "hashtab.h"
 
/* Enumeration of indexes into libfunc_table.  */
enum libfunc_index
{
  LTI_abort,
  LTI_memcpy,
  LTI_memmove,
  LTI_memcmp,
  LTI_memset,
  LTI_setbits,
 
  LTI_setjmp,
  LTI_longjmp,
  LTI_unwind_sjlj_register,
  LTI_unwind_sjlj_unregister,
 
  LTI_profile_function_entry,
  LTI_profile_function_exit,
 
  LTI_synchronize,
 
  LTI_gcov_flush,
 
  LTI_MAX
};
 
/* Information about an optab-related libfunc.  We use the same hashtable
   for normal optabs and conversion optabs.  In the first case mode2
   is unused.  */
struct GTY(()) libfunc_entry {
  size_t optab;
  enum machine_mode mode1, mode2;
  rtx libfunc;
};
 
/* Target-dependent globals.  */
struct GTY(()) target_libfuncs {
  /* SYMBOL_REF rtx's for the library functions that are called
     implicitly and not via optabs.  */
  rtx x_libfunc_table[LTI_MAX];
 
  /* Hash table used to convert declarations into nodes.  */
  htab_t GTY((param_is (struct libfunc_entry))) x_libfunc_hash;
};
 
extern GTY(()) struct target_libfuncs default_target_libfuncs;
#if SWITCHABLE_TARGET
extern struct target_libfuncs *this_target_libfuncs;
#else
#define this_target_libfuncs (&default_target_libfuncs)
#endif
 
#define libfunc_table \
  (this_target_libfuncs->x_libfunc_table)
 
/* Accessor macros for libfunc_table.  */
 
#define abort_libfunc	(libfunc_table[LTI_abort])
#define memcpy_libfunc	(libfunc_table[LTI_memcpy])
#define memmove_libfunc	(libfunc_table[LTI_memmove])
#define memcmp_libfunc	(libfunc_table[LTI_memcmp])
#define memset_libfunc	(libfunc_table[LTI_memset])
#define setbits_libfunc	(libfunc_table[LTI_setbits])
 
#define setjmp_libfunc	(libfunc_table[LTI_setjmp])
#define longjmp_libfunc	(libfunc_table[LTI_longjmp])
#define unwind_sjlj_register_libfunc (libfunc_table[LTI_unwind_sjlj_register])
#define unwind_sjlj_unregister_libfunc \
  (libfunc_table[LTI_unwind_sjlj_unregister])
 
#define profile_function_entry_libfunc	(libfunc_table[LTI_profile_function_entry])
#define profile_function_exit_libfunc	(libfunc_table[LTI_profile_function_exit])
 
#define synchronize_libfunc	(libfunc_table[LTI_synchronize])
 
#define gcov_flush_libfunc	(libfunc_table[LTI_gcov_flush])
 
/* In explow.c */
extern void set_stack_check_libfunc (const char *);
 
#endif /* GCC_LIBFUNCS_H */