1 files changed, 83 insertions, 0 deletions
diff --git a/include/crypto/clmul.h b/include/crypto/clmul.h
new file mode 100644
index 0000000000..446931fe05
--- /dev/null
+++ b/include/crypto/clmul.h
@@ -0,0 +1,83 @@
+/*
+ * Carry-less multiply operations.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Copyright (C) 2023 Linaro, Ltd.
+ */
+
+#ifndef CRYPTO_CLMUL_H
+#define CRYPTO_CLMUL_H
+
+#include "qemu/int128.h"
+#include "host/crypto/clmul.h"
+
+/**
+ * clmul_8x8_low:
+ *
+ * Perform eight 8x8->8 carry-less multiplies.
+ */
+uint64_t clmul_8x8_low(uint64_t, uint64_t);
+
+/**
+ * clmul_8x4_even:
+ *
+ * Perform four 8x8->16 carry-less multiplies.
+ * The odd bytes of the inputs are ignored.
+ */
+uint64_t clmul_8x4_even(uint64_t, uint64_t);
+
+/**
+ * clmul_8x4_odd:
+ *
+ * Perform four 8x8->16 carry-less multiplies.
+ * The even bytes of the inputs are ignored.
+ */
+uint64_t clmul_8x4_odd(uint64_t, uint64_t);
+
+/**
+ * clmul_8x4_packed:
+ *
+ * Perform four 8x8->16 carry-less multiplies.
+ */
+uint64_t clmul_8x4_packed(uint32_t, uint32_t);
+
+/**
+ * clmul_16x2_even:
+ *
+ * Perform two 16x16->32 carry-less multiplies.
+ * The odd words of the inputs are ignored.
+ */
+uint64_t clmul_16x2_even(uint64_t, uint64_t);
+
+/**
+ * clmul_16x2_odd:
+ *
+ * Perform two 16x16->32 carry-less multiplies.
+ * The even words of the inputs are ignored.
+ */
+uint64_t clmul_16x2_odd(uint64_t, uint64_t);
+
+/**
+ * clmul_32:
+ *
+ * Perform a 32x32->64 carry-less multiply.
+ */
+uint64_t clmul_32(uint32_t, uint32_t);
+
+/**
+ * clmul_64:
+ *
+ * Perform a 64x64->128 carry-less multiply.
+ */
+Int128 clmul_64_gen(uint64_t, uint64_t);
+
+static inline Int128 clmul_64(uint64_t a, uint64_t b)
+{
+    if (HAVE_CLMUL_ACCEL) {
+        return clmul_64_accel(a, b);
+    } else {
+        return clmul_64_gen(a, b);
+    }
+}
+
+#endif /* CRYPTO_CLMUL_H */