1 /* $NetBSD: exec_prot.h,v 1.1 2011/07/18 23:16:11 jym Exp $ */ 2 3 /*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jean-Yves Migeon. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _TESTS_EXEC_PROT_H_ 33 #define _TESTS_EXEC_PROT_H_ 34 35 /* 36 * Prototype definitions of external helper functions for executable 37 * mapping tests. 38 */ 39 40 /* 41 * Trivial MD shellcode that justs returns 1. 42 */ 43 int return_one(void); /* begin marker -- shellcode entry */ 44 int return_one_end(void); /* end marker */ 45 46 /* 47 * MD callback to verify whether host offers executable space protection. 48 * Returns execute protection level. 49 */ 50 int exec_prot_support(void); 51 52 /* execute protection level */ 53 enum { 54 NOTIMPL = -1, /* callback not implemented */ 55 NO_XP, /* no execute protection */ 56 PERPAGE_XP, /* per-page execute protection */ 57 PARTIAL_XP /* partial execute protection. Depending on where the 58 page is located in virtual memory, executable space 59 protection may be enforced or not. */ 60 }; 61 #endif 62