1 //===-- dfsan.h -------------------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file is a part of DataFlowSanitizer.
12 // Private DFSan header.
13 //===----------------------------------------------------------------------===//
18 #include "sanitizer_common/sanitizer_internal_defs.h"
20 // Copy declarations from public sanitizer/dfsan_interface.h header here.
21 typedef u16 dfsan_label;
23 struct dfsan_label_info {
31 void dfsan_add_label(dfsan_label label, void *addr, uptr size);
32 void dfsan_set_label(dfsan_label label, void *addr, uptr size);
33 dfsan_label dfsan_read_label(const void *addr, uptr size);
34 dfsan_label dfsan_union(dfsan_label l1, dfsan_label l2);
38 void dfsan_set_label(dfsan_label label, T &data) { // NOLINT
39 dfsan_set_label(label, (void *)&data, sizeof(T));
44 void InitializeInterceptors();
46 inline dfsan_label *shadow_for(void *ptr) {
47 #if defined(__x86_64__)
48 return (dfsan_label *) ((((uptr) ptr) & ~0x700000000000) << 1);
49 #elif defined(__mips64)
50 return (dfsan_label *) ((((uptr) ptr) & ~0xF000000000) << 1);
54 inline const dfsan_label *shadow_for(const void *ptr) {
55 return shadow_for(const_cast<void *>(ptr));
59 // Whether to warn on unimplemented functions.
60 bool warn_unimplemented;
61 // Whether to warn on non-zero labels.
62 bool warn_nonzero_labels;
63 // Whether to propagate labels only when there is an obvious data dependency
64 // (e.g., when comparing strings, ignore the fact that the output of the
65 // comparison might be data-dependent on the content of the strings). This
66 // applies only to the custom functions defined in 'custom.c'.
67 bool strict_data_dependencies;
68 // The path of the file where to dump the labels when the program terminates.
69 const char* dump_labels_at_exit;
72 extern Flags flags_data;
73 inline Flags &flags() {
77 } // namespace __dfsan