* cipher/poly1305-avx2-amd64.S: Enable when
HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS defined.
(ELF): New macro to mask lines with ELF specific commands.
* cipher/poly1305-sse2-amd64.S: Enable when
HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS defined.
(ELF): New macro to mask lines with ELF specific commands.
* cipher/poly1305-internal.h (POLY1305_SYSV_FUNC_ABI): New.
(POLY1305_USE_SSE2, POLY1305_USE_AVX2): Enable when
HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS defined.
(OPS_FUNC_ABI): New.
(poly1305_ops_t): Use OPS_FUNC_ABI.
* cipher/poly1305.c (_gcry_poly1305_amd64_sse2_init_ext)
(_gcry_poly1305_amd64_sse2_finish_ext)
(_gcry_poly1305_amd64_sse2_blocks, _gcry_poly1305_amd64_avx2_init_ext)
(_gcry_poly1305_amd64_avx2_finish_ext)
(_gcry_poly1305_amd64_avx2_blocks, _gcry_poly1305_armv7_neon_init_ext)
(_gcry_poly1305_armv7_neon_finish_ext)
(_gcry_poly1305_armv7_neon_blocks, poly1305_init_ext_ref32)
(poly1305_blocks_ref32, poly1305_finish_ext_ref32)
(poly1305_init_ext_ref8, poly1305_blocks_ref8)
(poly1305_finish_ext_ref8): Use OPS_FUNC_ABI.