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host/include/i386: Implement clmul.h
Detect PCLMUL in cpuinfo; implement the accel hook. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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/* | ||
* x86 specific clmul acceleration. | ||
* SPDX-License-Identifier: GPL-2.0-or-later | ||
*/ | ||
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#ifndef X86_HOST_CRYPTO_CLMUL_H | ||
#define X86_HOST_CRYPTO_CLMUL_H | ||
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#include "host/cpuinfo.h" | ||
#include <immintrin.h> | ||
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#if defined(__PCLMUL__) | ||
# define HAVE_CLMUL_ACCEL true | ||
# define ATTR_CLMUL_ACCEL | ||
#else | ||
# define HAVE_CLMUL_ACCEL likely(cpuinfo & CPUINFO_PCLMUL) | ||
# define ATTR_CLMUL_ACCEL __attribute__((target("pclmul"))) | ||
#endif | ||
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static inline Int128 ATTR_CLMUL_ACCEL | ||
clmul_64_accel(uint64_t n, uint64_t m) | ||
{ | ||
union { __m128i v; Int128 s; } u; | ||
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u.v = _mm_clmulepi64_si128(_mm_set_epi64x(0, n), _mm_set_epi64x(0, m), 0); | ||
return u.s; | ||
} | ||
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#endif /* X86_HOST_CRYPTO_CLMUL_H */ |
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#include "host/include/i386/host/crypto/clmul.h" |
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