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