--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/target-hooks-macros.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,80 @@
+/* Common macros for target hook definitions.
+   Copyright (C) 2001-2017 Free Software Foundation, Inc.
+
+   This program 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.
+
+   This program 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 this program; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+/* The following macros should be provided by the including file:
+
+   DEFHOOK(NAME, DOC, TYPE, PARAMS, INIT): Define a function-valued hook.
+   DEFHOOKPOD(NAME, DOC, TYPE, INIT): Define a piece-of-data 'hook'.  */
+
+/* Defaults for optional macros:
+   DEFHOOKPODX(NAME, TYPE, INIT): Like DEFHOOKPOD, but share documentation
+   with the previous 'hook'.  */
+#ifndef DEFHOOKPODX
+#define DEFHOOKPODX(NAME, TYPE, INIT) DEFHOOKPOD (NAME, 0, TYPE, INIT)
+#endif
+   
+/* HOOKSTRUCT(FRAGMENT): Declarator fragments to encapsulate all the
+   members into a struct gcc_target, which in turn contains several
+   sub-structs.  */
+#ifndef HOOKSTRUCT
+#define HOOKSTRUCT(FRAGMENT)
+#endif
+/* HOOK_VECTOR: Start a struct declaration, which then gets its own initializer.
+   HOOK_VECTOR_END: Close a struct declaration, providing a member declarator
+                    name for nested use.  */
+#ifndef HOOK_VECTOR_1
+#define HOOK_VECTOR_1(NAME, FRAGMENT) HOOKSTRUCT (FRAGMENT)
+#endif
+#define HOOK_VECTOR(INIT_NAME, SNAME) HOOK_VECTOR_1 (INIT_NAME, struct SNAME {)
+#define HOOK_VECTOR_END(DECL_NAME) HOOK_VECTOR_1(,} DECL_NAME ;)
+
+/* FIXME: For pre-existing hooks, we can't place the documentation in the
+   documentation field here till we get permission from the FSF to include
+   it in GPLed software - the target hook documentation is so far only
+   available under the GFDL.  */
+
+/* A hook should generally be documented by a string in the DOC parameter,
+   which should contain texinfo markup.  If the documentation is only available
+   under the GPL, but not under the GFDL, put it in a comment above the hook
+   definition.  If the function declaration is available both under GPL and
+   GFDL, but the documentation is only available under the GFDL, put the
+   documentaton in tm.texi.in, heading with @hook <hookname> and closing
+   the paragraph with @end deftypefn / deftypevr as appropriate, and marking
+   the next autogenerated hook with @hook <hookname>.
+   In both these cases, leave the DOC string empty, i.e. "".
+   Sometimes, for some historic reason the function declaration 
+   has to be documented differently
+   than what it is.  In that case, use DEFHOOK_UNDOC to suppress auto-generation
+   of documentation.  DEFHOOK_UNDOC takes a DOC string which it ignores, so
+   you can put GPLed documentation string there if you have hopes that you
+   can clear the declaration & documentation for GFDL distribution later,
+   in which case you can then simply change the DEFHOOK_UNDOC to DEFHOOK
+   to turn on the autogeneration of the documentation.
+
+    A documentation string of "*" means not to emit any documentation at all,
+   and is mainly used internally for DEFHOOK_UNDOC.  It should generally not
+   be used otherwise, but it has its use for exceptional cases where automatic
+   documentation is not wanted, and the real documentation is elsewere, like
+   for TARGET_ASM_{,UN}ALIGNED_INT_OP, which are hooks only for implementation
+   purposes; they refer to structs, the components of which are documented as
+   separate hooks TARGET_ASM_{,UN}ALIGNED_[HSDT]I_OP.
+   A DOC string of 0 is for internal use of DEFHOOKPODX and special table
+   entries only.  */
+
+/* Empty macro arguments are undefined in C90, so use an empty macro
+   to close top-level hook structures.  */
+#define C90_EMPTY_HACK