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diff --git a/gcc-4.9/libgcc/config/sh/linux-atomic.c b/gcc-4.9/libgcc/config/sh/linux-atomic.c
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+/* Copyright (C) 2012-2014 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.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* Atomic built-in C functions for link compatibility with older code that
+ was compiled to emit function calls for atomic built-ins.
+ Notice that if no atomic model has been selected the functions in this
+ file must not be generated, or else they will result in infinite no-op
+ loops.
+ Notice also, that all the generated functions below take three parameters,
+ which is not actually true for some of the built-in functions. However,
+ on SH this does not matter, since the first four parameters are always
+ passed in call clobbered registers.
+ The return type for the sync_bool_compare_and_swap functions is also
+ actually supposed to be a bool, but this also doesn't matter since any
+ int return type <= 32 bit is returned in R0 on SH. */
+
+#if !__SH_ATOMIC_MODEL_NONE__
+
+typedef unsigned char uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int uint32_t;
+
+#define uint8_t_sz 1
+#define uint16_t_sz 2
+#define uint32_t_sz 4
+
+#define typesz(x) x##_sz
+
+#define concat(x,y) __ ## x ## _ ## y
+#define eval(x,y) concat (x,y)
+#define genname(f,t) eval(f, typesz (t))
+
+#define func1(name, type) \
+ type __attribute__((visibility("hidden"))) \
+ genname (name, type) (type* x, type y, type z) \
+ { \
+ return __##name (x, y, z); \
+ }
+
+#define genfuncs(name) \
+ func1 (name, uint8_t) \
+ func1 (name, uint16_t) \
+ func1 (name, uint32_t)
+
+genfuncs (sync_lock_test_and_set)
+genfuncs (sync_val_compare_and_swap)
+genfuncs (sync_bool_compare_and_swap)
+genfuncs (sync_fetch_and_add)
+genfuncs (sync_fetch_and_or)
+genfuncs (sync_fetch_and_and)
+genfuncs (sync_fetch_and_xor)
+genfuncs (sync_fetch_and_sub)
+genfuncs (sync_fetch_and_nand)
+genfuncs (sync_add_and_fetch)
+genfuncs (sync_or_and_fetch)
+genfuncs (sync_and_and_fetch)
+genfuncs (sync_xor_and_fetch)
+genfuncs (sync_sub_and_fetch)
+genfuncs (sync_nand_and_fetch)
+
+#endif