Gate all arm asm on Armv6 or better architecture
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/library/bn_mul.h b/library/bn_mul.h
index 92a9266..4751802 100644
--- a/library/bn_mul.h
+++ b/library/bn_mul.h
@@ -671,6 +671,8 @@
* clang and armcc5 under the same conditions).
*/
+#if defined(__ARM_ARCH)
+#if __ARM_ARCH >= 6
#if defined(__thumb__) && !defined(__thumb2__) // Thumb1 (not Thumb 2) ISA
// Only supported by gcc, when optimisation is enabled; only option A works
@@ -698,6 +700,9 @@
#define ARM_OPTION_B
#endif
+#endif
+#endif
+
#if defined(ARM_OPTION_A)
#define MULADDC_X1_INIT \