diff options
Diffstat (limited to 'crypto/bn')
-rw-r--r-- | crypto/bn/bn_ppccap.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/crypto/bn/bn_ppccap.c b/crypto/bn/bn_ppccap.c new file mode 100644 index 0000000000..ad8041a8e6 --- /dev/null +++ b/crypto/bn/bn_ppccap.c @@ -0,0 +1,42 @@ +/* + * Copyright 2009-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include <openssl/opensslconf.h> +#include <openssl/bn.h> +#include "../ppc_arch.h" + +#ifndef OPENSSL_BN_ASM_MONT +NON_EMPTY_TRANSLATION_UNIT +#else +int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, + const BN_ULONG *np, const BN_ULONG *n0, int num) +{ + int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, + const BN_ULONG *np, const BN_ULONG *n0, int num); + int bn_mul4x_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, + const BN_ULONG *np, const BN_ULONG *n0, int num); + + if (num < 4) + return 0; + + if ((num & 3) == 0) + return bn_mul4x_mont_int(rp, ap, bp, np, n0, num); + + /* + * There used to be [optional] call to bn_mul_mont_fpu64 here, + * but above subroutine is faster on contemporary processors. + * Formulation means that there might be old processors where + * FPU code path would be faster, POWER6 perhaps, but there was + * no opportunity to figure it out... + */ + + return bn_mul_mont_int(rp, ap, bp, np, n0, num); +} +#endif + |