forked from OSchip/llvm-project
103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
//===-- dfsan.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 DataFlowSanitizer.
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//
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// Private DFSan header.
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//===----------------------------------------------------------------------===//
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#ifndef DFSAN_H
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#define DFSAN_H
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#include "sanitizer_common/sanitizer_internal_defs.h"
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#include "dfsan_platform.h"
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using __sanitizer::u32;
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using __sanitizer::u8;
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using __sanitizer::uptr;
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// Copy declarations from public sanitizer/dfsan_interface.h header here.
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typedef u8 dfsan_label;
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typedef u32 dfsan_origin;
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extern "C" {
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void dfsan_add_label(dfsan_label label, void *addr, uptr size);
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void dfsan_set_label(dfsan_label label, void *addr, uptr size);
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dfsan_label dfsan_read_label(const void *addr, uptr size);
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dfsan_label dfsan_union(dfsan_label l1, dfsan_label l2);
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// Zero out [offset, offset+size) from __dfsan_arg_tls.
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void dfsan_clear_arg_tls(uptr offset, uptr size);
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// Zero out the TLS storage.
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void dfsan_clear_thread_local_state();
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// Return the origin associated with the first taint byte in the size bytes
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// from the address addr.
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dfsan_origin dfsan_read_origin_of_first_taint(const void *addr, uptr size);
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// Set the data within [addr, addr+size) with label and origin.
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void dfsan_set_label_origin(dfsan_label label, dfsan_origin origin, void *addr,
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uptr size);
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// Copy or move the origins of the len bytes from src to dst.
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void dfsan_mem_origin_transfer(const void *dst, const void *src, uptr len);
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} // extern "C"
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template <typename T>
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void dfsan_set_label(dfsan_label label, T &data) {
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dfsan_set_label(label, (void *)&data, sizeof(T));
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}
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namespace __dfsan {
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extern bool dfsan_inited;
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extern bool dfsan_init_is_running;
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void initialize_interceptors();
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inline dfsan_label *shadow_for(void *ptr) {
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return (dfsan_label *)MEM_TO_SHADOW(ptr);
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}
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inline const dfsan_label *shadow_for(const void *ptr) {
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return shadow_for(const_cast<void *>(ptr));
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}
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inline uptr unaligned_origin_for(uptr ptr) { return MEM_TO_ORIGIN(ptr); }
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inline dfsan_origin *origin_for(void *ptr) {
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auto aligned_addr = unaligned_origin_for(reinterpret_cast<uptr>(ptr)) &
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~(sizeof(dfsan_origin) - 1);
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return reinterpret_cast<dfsan_origin *>(aligned_addr);
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}
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inline const dfsan_origin *origin_for(const void *ptr) {
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return origin_for(const_cast<void *>(ptr));
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}
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void dfsan_copy_memory(void *dst, const void *src, uptr size);
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void dfsan_allocator_init();
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void dfsan_deallocate(void *ptr);
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void *dfsan_malloc(uptr size);
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void *dfsan_calloc(uptr nmemb, uptr size);
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void *dfsan_realloc(void *ptr, uptr size);
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void *dfsan_reallocarray(void *ptr, uptr nmemb, uptr size);
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void *dfsan_valloc(uptr size);
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void *dfsan_pvalloc(uptr size);
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void *dfsan_aligned_alloc(uptr alignment, uptr size);
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void *dfsan_memalign(uptr alignment, uptr size);
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int dfsan_posix_memalign(void **memptr, uptr alignment, uptr size);
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void dfsan_init();
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} // namespace __dfsan
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#endif // DFSAN_H
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