86 lines
3.8 KiB
C++
86 lines
3.8 KiB
C++
//===-- asan_stack.h --------------------------------------------*- C++ -*-===//
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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 AddressSanitizer, an address sanity checker.
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//
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// ASan-private header for asan_stack.cc.
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//===----------------------------------------------------------------------===//
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#ifndef ASAN_STACK_H
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#define ASAN_STACK_H
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#include "asan_flags.h"
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#include "asan_thread.h"
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#include "sanitizer_common/sanitizer_flags.h"
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#include "sanitizer_common/sanitizer_stacktrace.h"
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namespace __asan {
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void PrintStack(StackTrace *stack);
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void PrintStack(const uptr *trace, uptr size);
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} // namespace __asan
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// Get the stack trace with the given pc and bp.
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// The pc will be in the position 0 of the resulting stack trace.
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// The bp may refer to the current frame or to the caller's frame.
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#if SANITIZER_WINDOWS
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#define GET_STACK_TRACE_WITH_PC_AND_BP(max_s, pc, bp, fast) \
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StackTrace stack; \
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stack.Unwind(max_s, pc, bp, 0, 0, fast)
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#else
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#define GET_STACK_TRACE_WITH_PC_AND_BP(max_s, pc, bp, fast) \
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StackTrace stack; \
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{ \
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AsanThread *t; \
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stack.size = 0; \
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if (asan_inited) { \
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if ((t = GetCurrentThread()) && !t->isUnwinding()) { \
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uptr stack_top = t->stack_top(); \
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uptr stack_bottom = t->stack_bottom(); \
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ScopedUnwinding unwind_scope(t); \
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stack.Unwind(max_s, pc, bp, stack_top, stack_bottom, fast); \
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} else if (t == 0 && !fast) { \
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/* If GetCurrentThread() has failed, try to do slow unwind anyways. */ \
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stack.Unwind(max_s, pc, bp, 0, 0, false); \
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} \
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} \
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}
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#endif // SANITIZER_WINDOWS
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// NOTE: A Rule of thumb is to retrieve stack trace in the interceptors
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// as early as possible (in functions exposed to the user), as we generally
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// don't want stack trace to contain functions from ASan internals.
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#define GET_STACK_TRACE(max_size, fast) \
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GET_STACK_TRACE_WITH_PC_AND_BP(max_size, \
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StackTrace::GetCurrentPc(), GET_CURRENT_FRAME(), fast)
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#define GET_STACK_TRACE_FATAL(pc, bp) \
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GET_STACK_TRACE_WITH_PC_AND_BP(kStackTraceMax, pc, bp, \
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common_flags()->fast_unwind_on_fatal)
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#define GET_STACK_TRACE_FATAL_HERE \
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GET_STACK_TRACE(kStackTraceMax, common_flags()->fast_unwind_on_fatal)
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#define GET_STACK_TRACE_THREAD \
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GET_STACK_TRACE(kStackTraceMax, true)
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#define GET_STACK_TRACE_MALLOC \
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GET_STACK_TRACE(common_flags()->malloc_context_size, \
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common_flags()->fast_unwind_on_malloc)
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#define GET_STACK_TRACE_FREE GET_STACK_TRACE_MALLOC
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#define PRINT_CURRENT_STACK() \
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{ \
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GET_STACK_TRACE(kStackTraceMax, \
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common_flags()->fast_unwind_on_fatal); \
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PrintStack(&stack); \
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}
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#endif // ASAN_STACK_H
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