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diff --git a/source/gles2rice/src/arm_features.h b/source/gles2rice/src/arm_features.h
new file mode 100644
index 0000000..fdec522
--- /dev/null
+++ b/source/gles2rice/src/arm_features.h
@@ -0,0 +1,52 @@
+#ifndef __ARM_FEATURES_H__
+#define __ARM_FEATURES_H__
+
+#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
+ || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
+ || defined(__ARM_ARCH_7EM__)
+
+#define HAVE_ARMV7
+#define HAVE_ARMV6
+#define HAVE_ARMV5
+
+#elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
+   || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
+   || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__)
+
+#define HAVE_ARMV6
+#define HAVE_ARMV5
+
+#elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5E__) \
+   || defined(__ARM_ARCH_5T__) || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__)
+
+#define HAVE_ARMV5
+
+#endif
+
+/* no need for HAVE_NEON - GCC defines __ARM_NEON__ consistently */
+
+/* global function/external symbol */
+#ifndef __MACH__
+#define ESYM(name) name
+
+#define FUNCTION(name) \
+  .globl name; \
+  .type name, %function; \
+  name
+
+#define EXTRA_UNSAVED_REGS
+
+#else
+#define ESYM(name) _##name
+
+#define FUNCTION(name) \
+  .globl ESYM(name); \
+  name: \
+  ESYM(name)
+
+// r7 is preserved, but add it for EABI alignment..
+#define EXTRA_UNSAVED_REGS r7, r9,
+
+#endif
+
+#endif /* __ARM_FEATURES_H__ */