30 lines
1.3 KiB
C++
30 lines
1.3 KiB
C++
//===-- asan_preinit.cc ---------------------------------------------------===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of AddressSanitizer, an address sanity checker.
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//
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// Call __asan_init at the very early stage of process startup.
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// On Linux we use .preinit_array section (unless PIC macro is defined).
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//===----------------------------------------------------------------------===//
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#include "asan_internal.h"
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#if ASAN_USE_PREINIT_ARRAY && !defined(PIC)
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// On Linux, we force __asan_init to be called before anyone else
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// by placing it into .preinit_array section.
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// FIXME: do we have anything like this on Mac?
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// The symbol is called __local_asan_preinit, because it's not intended to be
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// exported.
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__attribute__((section(".preinit_array"), used))
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void (*__local_asan_preinit)(void) = __asan_init;
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#elif SANITIZER_WINDOWS && defined(_DLL)
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// On Windows, when using dynamic CRT (/MD), we can put a pointer
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// to __asan_init into the global list of C initializers.
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// See crt0dat.c in the CRT sources for the details.
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#pragma section(".CRT$XIB", long, read) // NOLINT
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__declspec(allocate(".CRT$XIB")) void (*__asan_preinit)() = __asan_init;
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#endif
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