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/* $NetBSD: asan.h,v 1.15 2020/09/10 14:10:46 maxv Exp $ */
/*
* Copyright (c) 2018-2020 Maxime Villard, m00nbsd.net
* All rights reserved.
*
* This code is part of the KASAN subsystem of the NetBSD kernel.
*
* 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 AUTHOR ``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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _SYS_ASAN_H_
#define _SYS_ASAN_H_
#ifdef KASAN
#include <sys/types.h>
/* ASAN constants. Part of the compiler ABI. */
#define KASAN_SHADOW_SCALE 8
#define KASAN_SHADOW_SCALE_SHIFT 3
/* Stack redzone values. Part of the compiler ABI. */
#define KASAN_STACK_LEFT 0xF1
#define KASAN_STACK_MID 0xF2
#define KASAN_STACK_RIGHT 0xF3
#define KASAN_USE_AFTER_RET 0xF5
#define KASAN_USE_AFTER_SCOPE 0xF8
/* Our redzone values. */
#define KASAN_GENERIC_REDZONE 0xFA
#define KASAN_MALLOC_REDZONE 0xFB
#define KASAN_KMEM_REDZONE 0xFC
#define KASAN_UMA_FREED 0xFD
#define KASAN_KSTACK_FREED 0xFE
void kasan_init(void);
void kasan_shadow_map(void *, size_t);
void kasan_mark(const void *, size_t, size_t, uint8_t);
#else /* KASAN */
#define kasan_early_init(u)
#define kasan_init()
#define kasan_shadow_map(a, s)
#define kasan_mark(p, s, l, c)
#endif /* !KASAN */
#endif /* !_SYS_ASAN_H_ */
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