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_vis3(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_fpu(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 (!(num & 1) && num >= 6) {
if ((num & 15) == 0 && num <= 64 &&
(OPENSSL_sparcv9cap_P[1] & (CFR_MONTMUL | CFR_MONTSQR)) ==
(CFR_MONTMUL | CFR_MONTSQR)) {
typedef int (*bn_mul_mont_f) (BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp,
const BN_ULONG *np,
const BN_ULONG *n0);
int bn_mul_mont_t4_8(BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp, const BN_ULONG *np,
const BN_ULONG *n0);
int bn_mul_mont_t4_16(BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp, const BN_ULONG *np,
const BN_ULONG *n0);
int bn_mul_mont_t4_24(BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp, const BN_ULONG *np,
const BN_ULONG *n0);
int bn_mul_mont_t4_32(BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp, const BN_ULONG *np,
const BN_ULONG *n0);
static const bn_mul_mont_f funcs[4] = {
bn_mul_mont_t4_8, bn_mul_mont_t4_16,
bn_mul_mont_t4_24, bn_mul_mont_t4_32
};
bn_mul_mont_f worker = funcs[num / 16 - 1];
if ((*worker) (rp, ap, bp, np, n0))
return 1;
/* retry once and fall back */
if ((*worker) (rp, ap, bp, np, n0))
return 1;
return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
}
if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3))
return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
else if (num >= 8 &&
(OPENSSL_sparcv9cap_P[0] &
(SPARCV9_PREFER_FPU | SPARCV9_VIS1)) ==
(SPARCV9_PREFER_FPU | SPARCV9_VIS1))
return bn_mul_mont_fpu(rp, ap, bp, np, n0, num);
}
return bn_mul_mont_int(rp, ap, bp, np, n0, num);
}
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_vis3(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_fpu(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 (!(num & 1) && num >= 6) {
if ((num & 15) == 0 && num <= 64 &&
(OPENSSL_sparcv9cap_P[1] & (CFR_MONTMUL | CFR_MONTSQR)) ==
(CFR_MONTMUL | CFR_MONTSQR)) {
typedef int (*bn_mul_mont_f) (BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp,
const BN_ULONG *np,
const BN_ULONG *n0);
int bn_mul_mont_t4_8(BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp, const BN_ULONG *np,
const BN_ULONG *n0);
int bn_mul_mont_t4_16(BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp, const BN_ULONG *np,
const BN_ULONG *n0);
int bn_mul_mont_t4_24(BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp, const BN_ULONG *np,
const BN_ULONG *n0);
int bn_mul_mont_t4_32(BN_ULONG *rp, const BN_ULONG *ap,
const BN_ULONG *bp, const BN_ULONG *np,
const BN_ULONG *n0);
static const bn_mul_mont_f funcs[4] = {
bn_mul_mont_t4_8, bn_mul_mont_t4_16,
bn_mul_mont_t4_24, bn_mul_mont_t4_32
};
bn_mul_mont_f worker = funcs[num / 16 - 1];
if ((*worker) (rp, ap, bp, np, n0))
return 1;
/* retry once and fall back */
if ((*worker) (rp, ap, bp, np, n0))
return 1;
return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
}
if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3))
return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
else if (num >= 8 &&
/*
* bn_mul_mont_fpu doesn't use FMADD, we just use the
* flag to detect when FPU path is preferable in cases
* when current heuristics is unreliable. [it works
* out because FMADD-capable processors where FPU
* code path is undesirable are also VIS3-capable and
* VIS3 code path takes precedence.]
*/
( (OPENSSL_sparcv9cap_P[0] & SPARCV9_FMADD) ||
(OPENSSL_sparcv9cap_P[0] &
(SPARCV9_PREFER_FPU | SPARCV9_VIS1)) ==
(SPARCV9_PREFER_FPU | SPARCV9_VIS1) ))
return bn_mul_mont_fpu(rp, ap, bp, np, n0, num);
}
return bn_mul_mont_int(rp, ap, bp, np, n0, num);
}
