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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
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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