59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/*
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* Copyright (C) 2019 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <stdint.h>
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#include <sys/ifunc.h>
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#if defined(__aarch64__)
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#define IFUNC_ARGS (uint64_t hwcap __attribute__((unused)), \
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__ifunc_arg_t* arg __attribute__((unused)))
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#elif defined(__arm__)
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#define IFUNC_ARGS (unsigned long hwcap __attribute__((unused)))
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#else
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#define IFUNC_ARGS ()
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#endif
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// We can't have HWASAN enabled in resolvers because they may be called before HWASAN is
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// initialized.
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#define DEFINE_IFUNC_FOR(name) \
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name##_func name __attribute__((ifunc(#name "_resolver"))); \
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__attribute__((visibility("hidden"))) \
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__attribute__((no_sanitize("hwaddress"))) \
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name##_func* name##_resolver IFUNC_ARGS
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#define DECLARE_FUNC(type, name) \
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__attribute__((visibility("hidden"))) \
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type name
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#define RETURN_FUNC(type, name) { \
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DECLARE_FUNC(type, name); \
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return name; \
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}
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