

#include <openssl/crypto.h>
#include <openssl/bn.h>
#include "crypto/ppc_arch.h"
#include "bn_local.h"

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);
    int bn_mul_mont_fixed_n6(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_300_fixed_n6(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);

    

#if defined(_ARCH_PPC64) && !defined(__ILP32__)
    if (num == 6) {
        if (OPENSSL_ppccap_P & PPC_MADD300)
            return bn_mul_mont_300_fixed_n6(rp, ap, bp, np, n0, num);
        else
            return bn_mul_mont_fixed_n6(rp, ap, bp, np, n0, num);
    }
#endif

    return bn_mul_mont_int(rp, ap, bp, np, n0, num);
}
