[OpenSSL-3.0LTS] TNF HEAD enables ec_nistp_64_gcc_128 on alpha/ia64/powerpc64

[Takehiko NOZAKI]

see crypto/external/bsd/openssl/lib/libcrypto/arch/*/ec.inc

[Takehiko NOZAKI]

this option enables optimization by using GCC’s __uint128_t on 64bit arch. Compilation and Installation - OpenSSLWiki

[Takehiko NOZAKI]

why aarch64/mips64/x86_64 aren’t enabling?

[Takehiko NOZAKI]

gcc-4.5.3 supports __uint128_t.

[Takehiko NOZAKI]

Use on little endian platforms when GCC supports __uint128_t. ECDH is about 2 to 4 times faster. Not enabled by default because Configure can't determine it. Enable it if your compiler defines SIZEOF_INT128, the CPU is little endian and it tolerates unaligned data access.

hmm, at least powerpc64 is BE, why enabling this????

[Takehiko NOZAKI]

mips64 is 32bit(-mabi=n32), not 64bit(-mabi=64, N HEAD introduce mipsn64 arch) so it’s ok without ec_nistp_64_gcc_128.

[Takehiko NOZAKI]

gcc-4.5.3 supports __uint128_t but build fail with error.

[Takehiko NOZAKI]

#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
# ifdef B_ENDIAN
#  error "Can not enable ec_nistp_64_gcc_128 on big-endian systems"
# endif

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[Takehiko NOZAKI]

powerpc64 is basically bi-endian cpu(so Configure never defined B_ENDIAN), but macppc and evbppc is BE.

[Takehiko NOZAKI]

evbppc/macppc can build with powerpc64 but TNF only releases powerpc32 binary.