--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/gensupport.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,97 @@
+/* Declarations for rtx-reader support for gen* routines.
+   Copyright (C) 2000, 2002, 2003, 2004, 2007, 2008
+   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_GENSUPPORT_H
+#define GCC_GENSUPPORT_H
+
+struct obstack;
+extern struct obstack *rtl_obstack;
+extern const char *in_fname;
+
+extern int init_md_reader_args_cb (int, char **, bool (*)(const char *));
+extern int init_md_reader_args (int, char **);
+extern rtx read_md_rtx (int *, int *);
+
+extern void message_with_line (int, const char *, ...)
+     ATTRIBUTE_PRINTF_2;
+
+/* Set this to 0 to disable automatic elision of insn patterns which
+   can never be used in this configuration.  See genconditions.c.
+   Must be set before calling init_md_reader.  */
+extern int insn_elision;
+
+/* If the C test passed as the argument can be evaluated at compile
+   time, return its truth value; else return -1.  The test must have
+   appeared somewhere in the machine description when genconditions
+   was run.  */
+extern int maybe_eval_c_test (const char *);
+
+/* Add an entry to the table of conditions.  Used by genconditions and
+   by read-rtl.c.  */
+extern void add_c_test (const char *, int);
+
+/* This structure is used internally by gensupport.c and genconditions.c.  */
+struct c_test
+{
+  const char *expr;
+  int value;
+};
+
+#ifdef __HASHTAB_H__
+extern hashval_t hash_c_test (const void *);
+extern int cmp_c_test (const void *, const void *);
+extern void traverse_c_tests (htab_trav, void *);
+#endif
+
+extern int n_comma_elts	(const char *);
+extern const char *scan_comma_elt (const char **);
+
+/* Predicate handling: helper functions and data structures.  */
+
+struct pred_data
+{
+  struct pred_data *next;	/* for iterating over the set of all preds */
+  const char *name;		/* predicate name */
+  bool special;			/* special handling of modes? */
+
+  /* data used primarily by genpreds.c */
+  const char *c_block;		/* C test block */
+  rtx exp;			/* RTL test expression */
+
+  /* data used primarily by genrecog.c */
+  enum rtx_code singleton;	/* if pred takes only one code, that code */
+  int num_codes;		/* number of codes accepted */
+  bool allows_non_lvalue;	/* if pred allows non-lvalue expressions */
+  bool allows_non_const;	/* if pred allows non-const expressions */
+  bool codes[NUM_RTX_CODE];	/* set of codes accepted */
+};
+
+extern struct pred_data *first_predicate;
+extern struct pred_data *lookup_predicate (const char *);
+extern void add_predicate_code (struct pred_data *, enum rtx_code);
+extern void add_predicate (struct pred_data *);
+
+#define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next)
+
+/* This callback will be invoked whenever an rtl include directive is
+   processed.  To be used for creation of the dependency file.  */
+extern void (*include_callback) (const char *);
+
+#endif /* GCC_GENSUPPORT_H */