- int bn_mul_mont_fpu64(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);
-
- if (sizeof(size_t) == 4) {
-# if 1 || (defined(__APPLE__) && defined(__MACH__))
- if (num >= 8 && (num & 3) == 0 && (OPENSSL_ppccap_P & PPC_FPU64))
- return bn_mul_mont_fpu64(rp, ap, bp, np, n0, num);
-# else
- /*
- * boundary of 32 was experimentally determined on Linux 2.6.22,
- * might have to be adjusted on AIX...
- */
- if (num >= 32 && (num & 3) == 0 && (OPENSSL_ppccap_P & PPC_FPU64)) {
- sigset_t oset;
- int ret;
-
- sigprocmask(SIG_SETMASK, &all_masked, &oset);
- ret = bn_mul_mont_fpu64(rp, ap, bp, np, n0, num);
- sigprocmask(SIG_SETMASK, &oset, NULL);
-
- return ret;
- }
-# endif
- } else if ((OPENSSL_ppccap_P & PPC_FPU64))
- /*
- * this is a "must" on POWER6, but run-time detection is not
- * implemented yet...
- */
- return bn_mul_mont_fpu64(rp, ap, bp, np, n0, num);
-
- return bn_mul_mont_int(rp, ap, bp, np, n0, num);