added and modified bionic code to support SuperH architecture
modified: libc/Android.mk
new files: libc/arch-sh/bionic/*
new files: libc/arch-sh/include/*
diff --git a/libc/arch-sh/bionic/atomic_cmpxchg.S b/libc/arch-sh/bionic/atomic_cmpxchg.S
new file mode 100644
index 0000000..4ccd6cf
--- /dev/null
+++ b/libc/arch-sh/bionic/atomic_cmpxchg.S
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+.text
+.type __atomic_cmpxchg, @function
+.globl __atomic_cmpxchg
+.align 4
+
+__atomic_cmpxchg:
+ mova 1f, r0
+ nop
+ mov r15, r1
+ mov #-8, r15 /* critical region start */
+0: mov.l @r6, r2
+ cmp/eq r2, r4
+ bt not_yet_modified
+ mov #1, r0
+ bra done
+ nop
+not_yet_modified:
+ mov #0, r0
+ mov.l r5, @r6
+done:
+1: mov r1, r15 /* critical region end */
+ rts
+ nop