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1//===-- msan_poisoning.h ----------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file is a part of MemorySanitizer.10//11//===----------------------------------------------------------------------===//12 13#ifndef MSAN_POISONING_H14#define MSAN_POISONING_H15 16#include "msan.h"17 18namespace __msan {19 20// Return origin for the first poisoned byte in the memory range, or 0.21u32 GetOriginIfPoisoned(uptr addr, uptr size);22 23// Walk [addr, addr+size) app memory region, copying origin tags from the24// corresponding positions in [src_origin, src_origin+size) where the25// corresponding shadow in [src_shadow, src_shadow+size) is non-zero.26void SetOriginIfPoisoned(uptr addr, uptr src_shadow, uptr size, u32 src_origin);27 28// Copy origin from src (app address) to dst (app address), creating chained29// origin ids as necessary, without overriding origin for fully initialized30// quads.31void CopyOrigin(const void *dst, const void *src, uptr size, StackTrace *stack);32 33// memmove() shadow and origin. Dst and src are application addresses.34// See CopyOrigin() for the origin copying logic.35void MoveShadowAndOrigin(const void *dst, const void *src, uptr size,36 StackTrace *stack);37 38// memcpy() shadow and origin. Dst and src are application addresses.39// See CopyOrigin() for the origin copying logic.40void CopyShadowAndOrigin(const void *dst, const void *src, uptr size,41 StackTrace *stack);42 43// memcpy() app memory, and do "the right thing" to the corresponding shadow and44// origin regions.45void CopyMemory(void *dst, const void *src, uptr size, StackTrace *stack);46 47// Fill shadow will value. Ptr is an application address.48void SetShadow(const void *ptr, uptr size, u8 value);49 50// Set origin for the memory region.51void SetOrigin(const void *dst, uptr size, u32 origin);52 53// Mark memory region uninitialized, with origins.54void PoisonMemory(const void *dst, uptr size, StackTrace *stack);55 56} // namespace __msan57 58#endif // MSAN_POISONING_H59