| //===-- msan_poisoning.h ----------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of MemorySanitizer. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef MSAN_POISONING_H |
| #define MSAN_POISONING_H |
| |
| #include "msan.h" |
| |
| namespace __msan { |
| |
| // Return origin for the first poisoned byte in the memory range, or 0. |
| u32 GetOriginIfPoisoned(uptr addr, uptr size); |
| |
| // Walk [addr, addr+size) app memory region, copying origin tags from the |
| // corresponding positions in [src_origin, src_origin+size) where the |
| // corresponding shadow in [src_shadow, src_shadow+size) is non-zero. |
| void SetOriginIfPoisoned(uptr addr, uptr src_shadow, uptr size, u32 src_origin); |
| |
| // Copy origin from src (app address) to dst (app address), creating chained |
| // origin ids as necessary, without overriding origin for fully initialized |
| // quads. |
| void CopyOrigin(const void *dst, const void *src, uptr size, StackTrace *stack); |
| |
| // memmove() shadow and origin. Dst and src are application addresses. |
| // See CopyOrigin() for the origin copying logic. |
| void MoveShadowAndOrigin(const void *dst, const void *src, uptr size, |
| StackTrace *stack); |
| |
| // memcpy() shadow and origin. Dst and src are application addresses. |
| // See CopyOrigin() for the origin copying logic. |
| void CopyShadowAndOrigin(const void *dst, const void *src, uptr size, |
| StackTrace *stack); |
| |
| // memcpy() app memory, and do "the right thing" to the corresponding shadow and |
| // origin regions. |
| void CopyMemory(void *dst, const void *src, uptr size, StackTrace *stack); |
| |
| // Fill shadow will value. Ptr is an application address. |
| void SetShadow(const void *ptr, uptr size, u8 value); |
| |
| // Set origin for the memory region. |
| void SetOrigin(const void *dst, uptr size, u32 origin); |
| |
| // Mark memory region uninitialized, with origins. |
| void PoisonMemory(const void *dst, uptr size, StackTrace *stack); |
| |
| } // namespace __msan |
| |
| #endif // MSAN_POISONING_H |