1//===-- msan_poisoning.h ----------------------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of MemorySanitizer. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef MSAN_POISONING_H 15#define MSAN_POISONING_H 16 17#include "msan.h" 18 19namespace __msan { 20 21// Return origin for the first poisoned byte in the memory range, or 0. 22u32 GetOriginIfPoisoned(uptr addr, uptr size); 23 24// Walk [addr, addr+size) app memory region, copying origin tags from the 25// corresponding positions in [src_origin, src_origin+size) where the 26// corresponding shadow in [src_shadow, src_shadow+size) is non-zero. 27void SetOriginIfPoisoned(uptr addr, uptr src_shadow, uptr size, u32 src_origin); 28 29// Copy origin from src (app address) to dst (app address), creating chained 30// origin ids as necessary, without overriding origin for fully initialized 31// quads. 32void CopyOrigin(const void *dst, const void *src, uptr size, StackTrace *stack); 33 34// memmove() shadow and origin. Dst and src are application addresses. 35// See CopyOrigin() for the origin copying logic. 36void MoveShadowAndOrigin(const void *dst, const void *src, uptr size, 37 StackTrace *stack); 38 39// memcpy() shadow and origin. Dst and src are application addresses. 40// See CopyOrigin() for the origin copying logic. 41void CopyShadowAndOrigin(const void *dst, const void *src, uptr size, 42 StackTrace *stack); 43 44// memcpy() app memory, and do "the right thing" to the corresponding shadow and 45// origin regions. 46void CopyMemory(void *dst, const void *src, uptr size, StackTrace *stack); 47 48// Fill shadow will value. Ptr is an application address. 49void SetShadow(const void *ptr, uptr size, u8 value); 50 51// Set origin for the memory region. 52void SetOrigin(const void *dst, uptr size, u32 origin); 53 54// Mark memory region uninitialized, with origins. 55void PoisonMemory(const void *dst, uptr size, StackTrace *stack); 56 57} // namespace __msan 58 59#endif // MSAN_POISONING_H 60