LCOM1920-T02G10

/*        $NetBSD: ssp.h,v 1.13 2015/09/03 20:43:47 plunky Exp $        */

/*-

 * Copyright (c) 2006, 2011 The NetBSD Foundation, Inc.

 * All rights reserved.

 *

 * This code is derived from software contributed to The NetBSD Foundation

 * by Christos Zoulas.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS

 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef _SSP_SSP_H_

#define _SSP_SSP_H_

#include <sys/cdefs.h>

#if !defined(__cplusplus)

# if _FORTIFY_SOURCE > 0 && !defined(__lint__) && \

     (__OPTIMIZE__ > 0 || defined(__clang__)) && __GNUC_PREREQ__(4, 1)

#  if _FORTIFY_SOURCE > 1

#   define __SSP_FORTIFY_LEVEL 2

#  else

#   define __SSP_FORTIFY_LEVEL 1

#  endif

# else

#  define __SSP_FORTIFY_LEVEL 0

# endif

#else

# define __SSP_FORTIFY_LEVEL 0

#endif

/* __ssp_real is used by the implementation in libc */

#if __SSP_FORTIFY_LEVEL == 0

#define __ssp_real_(fun)        fun

#else

#define __ssp_real_(fun)        __ssp_real_ ## fun

#endif

#define __ssp_real(fun)                __ssp_real_(fun)

#define __ssp_inline static __inline __attribute__((__always_inline__))

#define __ssp_bos(ptr) __builtin_object_size(ptr, __SSP_FORTIFY_LEVEL > 1)

#define __ssp_bos0(ptr) __builtin_object_size(ptr, 0)

#define __ssp_check(buf, len, bos) \

        if (bos(buf) != (size_t)-1 && len > bos(buf)) \

                __chk_fail()

#define __ssp_redirect_raw(rtype, fun, symbol, args, call, cond, bos) \

rtype __ssp_real_(fun) args __RENAME(symbol); \

__ssp_inline rtype fun args __RENAME(__ssp_protected_ ## fun); \

__ssp_inline rtype fun args { \

        if (cond) \

                __ssp_check(__buf, __len, bos); \

        return __ssp_real_(fun) call; \

}

#define __ssp_redirect(rtype, fun, args, call) \

    __ssp_redirect_raw(rtype, fun, fun, args, call, 1, __ssp_bos)

#define __ssp_redirect0(rtype, fun, args, call) \

    __ssp_redirect_raw(rtype, fun, fun, args, call, 1, __ssp_bos0)

#define __ssp_overlap(a, b, l) \

    (((a) <= (b) && (b) < (a) + (l)) || ((b) <= (a) && (a) < (b) + (l)))

__BEGIN_DECLS

void __stack_chk_fail(void) __dead;

void __chk_fail(void) __dead;

__END_DECLS

#endif /* _SSP_SSP_H_ */