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Return CPU features in Visual Studio builds

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Please note that on other platforms, we keep checking if intrinsics are available.
has_*() means that not only a CPU feature is present, but also that Sodium can
use it.
This commit is contained in:
Frank Denis
2015-11-16 16:16:54 +01:00
parent eb8119d65c
commit 0ad21a218c
1 changed files with 25 additions and 19 deletions
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src/libsodium/sodium/runtime.c
+25 -19
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@@ -102,42 +102,48 @@ _sodium_runtime_intel_cpu_features(CPUFeatures * const cpu_features)
return -1; /* LCOV_EXCL_LINE */
}
_cpuid(cpu_info, 0x00000001);
#ifndef HAVE_EMMINTRIN_H
cpu_features->has_sse2 = 0;
#else
#if defined(HAVE_EMMINTRIN_H) || \
(defined(_MSC_VER) && (defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86)))
cpu_features->has_sse2 = ((cpu_info[3] & CPUID_SSE2) != 0x0);
#else
cpu_features->has_sse2 = 0;
#endif
#ifndef HAVE_PMMINTRIN_H
cpu_features->has_sse3 = 0;
#else
#if defined(HAVE_PMMINTRIN_H) || \
(defined(_MSC_VER) && (defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86)))
cpu_features->has_sse3 = ((cpu_info[2] & CPUIDECX_SSE3) != 0x0);
#else
cpu_features->has_sse3 = 0;
#endif
#ifndef HAVE_TMMINTRIN_H
cpu_features->has_ssse3 = 0;
#else
#if defined(HAVE_TMMINTRIN_H) || \
(defined(_MSC_VER) && (defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86)))
cpu_features->has_ssse3 = ((cpu_info[2] & CPUIDECX_SSSE3) != 0x0);
#else
cpu_features->has_ssse3 = 0;
#endif
#ifndef HAVE_SMMINTRIN_H
cpu_features->has_sse41 = 0;
#else
#if defined(HAVE_SMMINTRIN_H) || \
(defined(_MSC_VER) && (defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86)))
cpu_features->has_sse41 = ((cpu_info[2] & CPUIDECX_SSE41) != 0x0);
#else
cpu_features->has_sse41 = 0;
#endif
#ifndef HAVE_AVXINTRIN_H
cpu_features->has_avx = 0;
#else
#if defined(HAVE_AVXINTRIN_H) || \
(defined(_MSC_VER) && (defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86)))
cpu_features->has_avx = ((cpu_info[2] & CPUIDECX_AVX) != 0x0);
#else
cpu_features->has_avx = 0;
#endif
#ifndef HAVE_WMMINTRIN_H
cpu_features->has_pclmul = 0;
cpu_features->has_aesni = 0;
#else
#if defined(HAVE_WMMINTRIN_H) || \
(defined(_MSC_VER) && (defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86)))
cpu_features->has_pclmul = ((cpu_info[2] & CPUIDECX_PCLMUL) != 0x0);
cpu_features->has_aesni = ((cpu_info[2] & CPUIDECX_AESNI) != 0x0);
#else
cpu_features->has_pclmul = 0;
cpu_features->has_aesni = 0;
#endif
return 0;