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-rw-r--r--src/vppinfra/crc32.h26
1 files changed, 25 insertions, 1 deletions
diff --git a/src/vppinfra/crc32.h b/src/vppinfra/crc32.h
index abb2953fb4d..5a47236a2ba 100644
--- a/src/vppinfra/crc32.h
+++ b/src/vppinfra/crc32.h
@@ -17,6 +17,7 @@
#define __included_crc32_h__
#if __SSE4_2__
+#define clib_crc32c_uses_intrinsics
#include <x86intrin.h>
static_always_inline u32
@@ -45,8 +46,31 @@ clib_crc32c (u8 * s, int len)
return v;
}
-#endif
+#elif __ARM_FEATURE_CRC32
+#define clib_crc32c_with_intrinsics
+#include <arm_acle.h>
+
+static_always_inline u32
+clib_crc32c (u8 * s, int len)
+{
+ u32 v = 0;
+
+ for (; len >= 8; len -= 8, s += 8)
+ v = __crc32cd (v, *((u64 *) s));
+
+ for (; len >= 4; len -= 4, s += 4)
+ v = __crc32cw (v, *((u32 *) s));
+
+ for (; len >= 2; len -= 2, s += 2)
+ v = __crc32ch (v, *((u16 *) s));
+
+ for (; len >= 1; len -= 1, s += 1)
+ v = __crc32cb (v, *((u8 *) s));
+ return v;
+}
+
+#endif
#endif /* __included_crc32_h__ */
/*