1*38da497aSMark Johnston /* $NetBSD: asan.h,v 1.15 2020/09/10 14:10:46 maxv Exp $ */ 2*38da497aSMark Johnston 3*38da497aSMark Johnston /* 4*38da497aSMark Johnston * Copyright (c) 2018-2020 Maxime Villard, m00nbsd.net 5*38da497aSMark Johnston * All rights reserved. 6*38da497aSMark Johnston * 7*38da497aSMark Johnston * This code is part of the KASAN subsystem of the NetBSD kernel. 8*38da497aSMark Johnston * 9*38da497aSMark Johnston * Redistribution and use in source and binary forms, with or without 10*38da497aSMark Johnston * modification, are permitted provided that the following conditions 11*38da497aSMark Johnston * are met: 12*38da497aSMark Johnston * 1. Redistributions of source code must retain the above copyright 13*38da497aSMark Johnston * notice, this list of conditions and the following disclaimer. 14*38da497aSMark Johnston * 2. Redistributions in binary form must reproduce the above copyright 15*38da497aSMark Johnston * notice, this list of conditions and the following disclaimer in the 16*38da497aSMark Johnston * documentation and/or other materials provided with the distribution. 17*38da497aSMark Johnston * 18*38da497aSMark Johnston * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19*38da497aSMark Johnston * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20*38da497aSMark Johnston * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21*38da497aSMark Johnston * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22*38da497aSMark Johnston * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23*38da497aSMark Johnston * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24*38da497aSMark Johnston * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25*38da497aSMark Johnston * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26*38da497aSMark Johnston * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27*38da497aSMark Johnston * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28*38da497aSMark Johnston * SUCH DAMAGE. 29*38da497aSMark Johnston * 30*38da497aSMark Johnston * $FreeBSD$ 31*38da497aSMark Johnston */ 32*38da497aSMark Johnston 33*38da497aSMark Johnston #ifndef _SYS_ASAN_H_ 34*38da497aSMark Johnston #define _SYS_ASAN_H_ 35*38da497aSMark Johnston 36*38da497aSMark Johnston #ifdef KASAN 37*38da497aSMark Johnston #include <sys/types.h> 38*38da497aSMark Johnston 39*38da497aSMark Johnston /* ASAN constants. Part of the compiler ABI. */ 40*38da497aSMark Johnston #define KASAN_SHADOW_SCALE 8 41*38da497aSMark Johnston #define KASAN_SHADOW_SCALE_SHIFT 3 42*38da497aSMark Johnston 43*38da497aSMark Johnston /* Stack redzone values. Part of the compiler ABI. */ 44*38da497aSMark Johnston #define KASAN_STACK_LEFT 0xF1 45*38da497aSMark Johnston #define KASAN_STACK_MID 0xF2 46*38da497aSMark Johnston #define KASAN_STACK_RIGHT 0xF3 47*38da497aSMark Johnston #define KASAN_USE_AFTER_RET 0xF5 48*38da497aSMark Johnston #define KASAN_USE_AFTER_SCOPE 0xF8 49*38da497aSMark Johnston 50*38da497aSMark Johnston /* Our redzone values. */ 51*38da497aSMark Johnston #define KASAN_GENERIC_REDZONE 0xFA 52*38da497aSMark Johnston #define KASAN_MALLOC_REDZONE 0xFB 53*38da497aSMark Johnston #define KASAN_KMEM_REDZONE 0xFC 54*38da497aSMark Johnston #define KASAN_UMA_FREED 0xFD 55*38da497aSMark Johnston #define KASAN_KSTACK_FREED 0xFE 56*38da497aSMark Johnston 57*38da497aSMark Johnston void kasan_init(void); 58*38da497aSMark Johnston void kasan_shadow_map(void *, size_t); 59*38da497aSMark Johnston 60*38da497aSMark Johnston void kasan_mark(const void *, size_t, size_t, uint8_t); 61*38da497aSMark Johnston #else /* KASAN */ 62*38da497aSMark Johnston #define kasan_early_init(u) 63*38da497aSMark Johnston #define kasan_init() 64*38da497aSMark Johnston #define kasan_shadow_map(a, s) 65*38da497aSMark Johnston #define kasan_mark(p, s, l, c) 66*38da497aSMark Johnston #endif /* !KASAN */ 67*38da497aSMark Johnston 68*38da497aSMark Johnston #endif /* !_SYS_ASAN_H_ */ 69