forked from OSchip/llvm-project
149 lines
5.1 KiB
C++
149 lines
5.1 KiB
C++
//===-- msan.h --------------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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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// Private MSan header.
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//===----------------------------------------------------------------------===//
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#ifndef MSAN_H
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#define MSAN_H
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#include "sanitizer_common/sanitizer_flags.h"
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#include "sanitizer_common/sanitizer_internal_defs.h"
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#include "sanitizer_common/sanitizer_stacktrace.h"
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#include "msan_interface_internal.h"
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#include "msan_flags.h"
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#ifndef MSAN_REPLACE_OPERATORS_NEW_AND_DELETE
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# define MSAN_REPLACE_OPERATORS_NEW_AND_DELETE 1
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#endif
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#define MEM_TO_SHADOW(mem) (((uptr)mem) & ~0x400000000000ULL)
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#define SHADOW_TO_ORIGIN(shadow) (((uptr)shadow) + 0x200000000000ULL)
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#define MEM_TO_ORIGIN(mem) (SHADOW_TO_ORIGIN(MEM_TO_SHADOW(mem)))
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#define MEM_IS_APP(mem) ((uptr)mem >= 0x600000000000ULL)
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#define MEM_IS_SHADOW(mem) \
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((uptr)mem >= 0x200000000000ULL && (uptr)mem <= 0x400000000000ULL)
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const int kMsanParamTlsSizeInWords = 100;
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const int kMsanRetvalTlsSizeInWords = 100;
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namespace __msan {
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extern int msan_inited;
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extern bool msan_init_is_running;
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extern int msan_report_count;
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bool ProtectRange(uptr beg, uptr end);
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bool InitShadow(bool prot1, bool prot2, bool map_shadow, bool init_origins);
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char *GetProcSelfMaps();
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void InitializeInterceptors();
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void MsanAllocatorThreadFinish();
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void *MsanReallocate(StackTrace *stack, void *oldp, uptr size,
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uptr alignment, bool zeroise);
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void MsanDeallocate(StackTrace *stack, void *ptr);
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void InstallTrapHandler();
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void InstallAtExitHandler();
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void ReplaceOperatorsNewAndDelete();
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const char *GetStackOriginDescr(u32 id, uptr *pc);
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void EnterSymbolizer();
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void ExitSymbolizer();
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bool IsInSymbolizer();
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struct SymbolizerScope {
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SymbolizerScope() { EnterSymbolizer(); }
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~SymbolizerScope() { ExitSymbolizer(); }
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};
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void EnterLoader();
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void ExitLoader();
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void MsanDie();
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void PrintWarning(uptr pc, uptr bp);
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void PrintWarningWithOrigin(uptr pc, uptr bp, u32 origin);
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void GetStackTrace(StackTrace *stack, uptr max_s, uptr pc, uptr bp,
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bool request_fast_unwind);
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void ReportUMR(StackTrace *stack, u32 origin);
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void ReportExpectedUMRNotFound(StackTrace *stack);
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void ReportStats();
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void ReportAtExitStatistics();
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void DescribeMemoryRange(const void *x, uptr size);
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void ReportUMRInsideAddressRange(const char *what, const void *start, uptr size,
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uptr offset);
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// Unpoison first n function arguments.
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void UnpoisonParam(uptr n);
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void UnpoisonThreadLocalState();
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u32 GetOriginIfPoisoned(uptr a, uptr size);
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void SetOriginIfPoisoned(uptr addr, uptr src_shadow, uptr size, u32 src_origin);
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void CopyOrigin(void *dst, const void *src, uptr size, StackTrace *stack);
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void MovePoison(void *dst, const void *src, uptr size, StackTrace *stack);
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void CopyPoison(void *dst, const void *src, uptr size, StackTrace *stack);
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// Returns a "chained" origin id, pointing to the given stack trace followed by
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// the previous origin id.
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u32 ChainOrigin(u32 id, StackTrace *stack);
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#define GET_MALLOC_STACK_TRACE \
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StackTrace stack; \
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stack.size = 0; \
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if (__msan_get_track_origins() && msan_inited) \
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GetStackTrace(&stack, common_flags()->malloc_context_size, \
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StackTrace::GetCurrentPc(), GET_CURRENT_FRAME(), \
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common_flags()->fast_unwind_on_malloc)
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#define GET_STORE_STACK_TRACE_PC_BP(pc, bp) \
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StackTrace stack; \
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stack.size = 0; \
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if (__msan_get_track_origins() > 1 && msan_inited) \
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GetStackTrace(&stack, flags()->store_context_size, pc, bp, \
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common_flags()->fast_unwind_on_malloc)
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#define GET_FATAL_STACK_TRACE_PC_BP(pc, bp) \
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StackTrace stack; \
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stack.size = 0; \
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if (msan_inited) \
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GetStackTrace(&stack, kStackTraceMax, pc, bp, \
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common_flags()->fast_unwind_on_fatal)
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#define GET_STORE_STACK_TRACE \
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GET_STORE_STACK_TRACE_PC_BP(StackTrace::GetCurrentPc(), GET_CURRENT_FRAME())
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class ScopedThreadLocalStateBackup {
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public:
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ScopedThreadLocalStateBackup() { Backup(); }
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~ScopedThreadLocalStateBackup() { Restore(); }
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void Backup();
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void Restore();
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private:
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u64 va_arg_overflow_size_tls;
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};
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extern void (*death_callback)(void);
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void MsanTSDInit(void (*destructor)(void *tsd));
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void *MsanTSDGet();
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void MsanTSDSet(void *tsd);
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void MsanTSDDtor(void *tsd);
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} // namespace __msan
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#define MSAN_MALLOC_HOOK(ptr, size) \
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if (&__sanitizer_malloc_hook) __sanitizer_malloc_hook(ptr, size)
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#define MSAN_FREE_HOOK(ptr) \
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if (&__sanitizer_free_hook) __sanitizer_free_hook(ptr)
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#endif // MSAN_H
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