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e3_176_ref/prebuilts/gcc/arm-none-eabi/include/ssp/ssp.h

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+/*	$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>
+
+/* __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 extern __inline__ __attribute__((__always_inline__, __gnu_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_decl(rtype, fun, args) \
+rtype __ssp_real_(fun) args __asm__(__ASMNAME(#fun)); \
+__ssp_inline rtype fun args
+#define __ssp_redirect_raw(rtype, fun, args, call, cond, bos) \
+__ssp_decl(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, args, call, 1, __ssp_bos)
+#define __ssp_redirect0(rtype, fun, args, call) \
+    __ssp_redirect_raw(rtype, 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) __dead2;
+void __chk_fail(void) __dead2;
+__END_DECLS
+
+#endif /* _SSP_SSP_H_ */