8cd61f710b
I realized looking at the sigalgs parser that I messed up the space-splitting logic slightly. If the CPU features are "foo bar baz", it would not parse "baz". This doesn't particular matter (the last one is "crc32"), but better to parse it correctly. Fix this and add a unit test. While I'm here, may as well add a fuzzer too. Change-Id: Ifc1603b8f70d975f391d10e51ede95deec31a83d Reviewed-on: https://boringssl-review.googlesource.com/31464 Commit-Queue: David Benjamin <davidben@google.com> CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> Reviewed-by: Adam Langley <agl@google.com>
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/* 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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