Peter Collingbourne | fa9f5ae | 2013-08-12 23:51:33 +0000 | [diff] [blame] | 1 | //===-- dfsan.h -------------------------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file is a part of DataFlowSanitizer. |
| 11 | // |
| 12 | // Private DFSan header. |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #ifndef DFSAN_H |
| 16 | #define DFSAN_H |
| 17 | |
Alexey Samsonov | c85d627 | 2013-11-17 09:41:47 +0000 | [diff] [blame] | 18 | #include "sanitizer_common/sanitizer_internal_defs.h" |
| 19 | |
| 20 | // Copy declarations from public sanitizer/dfsan_interface.h header here. |
| 21 | typedef u16 dfsan_label; |
| 22 | |
| 23 | struct dfsan_label_info { |
| 24 | dfsan_label l1; |
| 25 | dfsan_label l2; |
| 26 | const char *desc; |
| 27 | void *userdata; |
| 28 | }; |
| 29 | |
| 30 | extern "C" { |
Stephen Hines | 6a211c5 | 2014-07-21 00:49:56 -0700 | [diff] [blame] | 31 | void dfsan_add_label(dfsan_label label, void *addr, uptr size); |
Alexey Samsonov | c85d627 | 2013-11-17 09:41:47 +0000 | [diff] [blame] | 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); |
| 35 | } // extern "C" |
| 36 | |
| 37 | template <typename T> |
| 38 | void dfsan_set_label(dfsan_label label, T &data) { // NOLINT |
| 39 | dfsan_set_label(label, (void *)&data, sizeof(T)); |
| 40 | } |
Peter Collingbourne | fa9f5ae | 2013-08-12 23:51:33 +0000 | [diff] [blame] | 41 | |
| 42 | namespace __dfsan { |
| 43 | |
Peter Collingbourne | 6e4c46d | 2013-08-15 21:18:53 +0000 | [diff] [blame] | 44 | void InitializeInterceptors(); |
| 45 | |
Peter Collingbourne | fa9f5ae | 2013-08-12 23:51:33 +0000 | [diff] [blame] | 46 | inline dfsan_label *shadow_for(void *ptr) { |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 47 | #if defined(__x86_64__) |
Alexey Samsonov | c85d627 | 2013-11-17 09:41:47 +0000 | [diff] [blame] | 48 | return (dfsan_label *) ((((uptr) ptr) & ~0x700000000000) << 1); |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 49 | #elif defined(__mips64) |
| 50 | return (dfsan_label *) ((((uptr) ptr) & ~0xF000000000) << 1); |
| 51 | #endif |
Peter Collingbourne | fa9f5ae | 2013-08-12 23:51:33 +0000 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | inline const dfsan_label *shadow_for(const void *ptr) { |
| 55 | return shadow_for(const_cast<void *>(ptr)); |
| 56 | } |
| 57 | |
Peter Collingbourne | 78d737c | 2013-09-10 01:51:35 +0000 | [diff] [blame] | 58 | struct Flags { |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 59 | #define DFSAN_FLAG(Type, Name, DefaultValue, Description) Type Name; |
| 60 | #include "dfsan_flags.inc" |
| 61 | #undef DFSAN_FLAG |
| 62 | |
| 63 | void SetDefaults(); |
Peter Collingbourne | 78d737c | 2013-09-10 01:51:35 +0000 | [diff] [blame] | 64 | }; |
| 65 | |
| 66 | extern Flags flags_data; |
| 67 | inline Flags &flags() { |
| 68 | return flags_data; |
| 69 | } |
| 70 | |
Peter Collingbourne | fa9f5ae | 2013-08-12 23:51:33 +0000 | [diff] [blame] | 71 | } // namespace __dfsan |
| 72 | |
| 73 | #endif // DFSAN_H |