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bn: Make fixed-length Montgomery Multiplication conditional on PPC64

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This code is currently unconditional even though build.info has:

  $BNASM_ppc64=$BNASM_ppc32 ppc64-mont-fixed.s

This causes a build failure on 32-bit systems.

Fixes #15923

Signed-off-by: Martin Schwenke <martin@meltin.net>

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15971)
This commit is contained in:
Martin Schwenke 2021-07-01 16:59:30 +10:00 committed by Pauli
parent e7370fa016
commit 1627a41f1d
1 changed files with 2 additions and 0 deletions
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crypto/bn/bn_ppc.c
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@ -40,12 +40,14 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
* no opportunity to figure it out... * no opportunity to figure it out...
*/ */
#if defined(_ARCH_PPC64)
if (num == 6) { if (num == 6) {
if (OPENSSL_ppccap_P & PPC_MADD300) if (OPENSSL_ppccap_P & PPC_MADD300)
return bn_mul_mont_300_fixed_n6(rp, ap, bp, np, n0, num); return bn_mul_mont_300_fixed_n6(rp, ap, bp, np, n0, num);
else else
return bn_mul_mont_fixed_n6(rp, ap, bp, np, n0, num); return bn_mul_mont_fixed_n6(rp, ap, bp, np, n0, num);
} }
#endif
return bn_mul_mont_int(rp, ap, bp, np, n0, num); return bn_mul_mont_int(rp, ap, bp, np, n0, num);
} }