msan.h revision db010dae23962ab6089ad1e97af176b7215cb35c 
1//===-- msan.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 MemorySanitizer.
11//
12// Private MSan header.
13//===----------------------------------------------------------------------===//
14
15#ifndef MSAN_H
16#define MSAN_H
17
18#include "sanitizer_common/sanitizer_internal_defs.h"
19#include "sanitizer_common/sanitizer_stacktrace.h"
20#include "sanitizer/msan_interface.h"
21#include "msan_flags.h"
22
23#define MEM_TO_SHADOW(mem) (((uptr)mem)       & ~0x400000000000ULL)
24#define MEM_TO_ORIGIN(mem) (MEM_TO_SHADOW(mem) + 0x200000000000ULL)
25#define MEM_IS_APP(mem)    ((uptr)mem >=         0x600000000000ULL)
26#define MEM_IS_SHADOW(mem) ((uptr)mem >=         0x200000000000ULL && \
27                            (uptr)mem <=         0x400000000000ULL)
28
29const int kMsanParamTlsSizeInWords = 100;
30const int kMsanRetvalTlsSizeInWords = 100;
31
32namespace __msan {
33extern int msan_inited;
34extern bool msan_init_is_running;
35
36bool ProtectRange(uptr beg, uptr end);
37bool InitShadow(bool prot1, bool prot2, bool map_shadow, bool init_origins);
38char *GetProcSelfMaps();
39void InitializeInterceptors();
40
41void *MsanReallocate(StackTrace *stack, void *oldp, uptr size,
42                     uptr alignment, bool zeroise);
43void MsanDeallocate(void *ptr);
44void InstallTrapHandler();
45void ReplaceOperatorsNewAndDelete();
46
47void MsanDie();
48void PrintWarning(uptr pc, uptr bp);
49void PrintWarningWithOrigin(uptr pc, uptr bp, u32 origin);
50
51void GetStackTrace(StackTrace *stack, uptr max_s, uptr pc, uptr bp);
52
53void ReportUMR(StackTrace *stack, u32 origin);
54void ReportExpectedUMRNotFound(StackTrace *stack);
55
56#define GET_MALLOC_STACK_TRACE                                     \
57  StackTrace stack;                                                \
58  stack.size = 0;                                                  \
59  if (__msan_get_track_origins() && msan_inited)                   \
60    GetStackTrace(&stack, flags()->num_callers,                    \
61      StackTrace::GetCurrentPc(), GET_CURRENT_FRAME())
62
63}  // namespace __msan
64
65#endif  // MSAN_H
66