60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
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/* Copyright (c) 2018, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#ifndef OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
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#define OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
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#include <openssl/base.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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// The following symbols are defined on all platforms and exported for testing
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// and fuzzing purposes. They are not exported from the shared library so the
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// static linker will drop them outside of tests.
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#define HWCAP_NEON (1 << 12)
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// See /usr/include/asm/hwcap.h on an ARM installation for the source of
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// these values.
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#define HWCAP2_AES (1 << 0)
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#define HWCAP2_PMULL (1 << 1)
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#define HWCAP2_SHA1 (1 << 2)
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#define HWCAP2_SHA2 (1 << 3)
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typedef struct {
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const char *data;
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size_t len;
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} STRING_PIECE;
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// crypto_get_arm_hwcap_from_cpuinfo returns an equivalent ARM |AT_HWCAP| value
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// from |cpuinfo|.
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unsigned long crypto_get_arm_hwcap_from_cpuinfo(const STRING_PIECE *cpuinfo);
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// crypto_get_arm_hwcap2_from_cpuinfo returns an equivalent ARM |AT_HWCAP2|
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// value from |cpuinfo|.
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unsigned long crypto_get_arm_hwcap2_from_cpuinfo(const STRING_PIECE *cpuinfo);
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// crypto_cpuinfo_has_broken_neon returns one if |cpuinfo| matches a CPU known
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// to have broken NEON unit and zero otherwise. See https://crbug.com/341598.
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int crypto_cpuinfo_has_broken_neon(const STRING_PIECE *cpuinfo);
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#if defined(__cplusplus)
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} // extern C
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#endif
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#endif // OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
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