1 //===-- asan_stack.h --------------------------------------------*- C++ -*-===//
3 // This file is distributed under the University of Illinois Open Source
4 // License. See LICENSE.TXT for details.
6 //===----------------------------------------------------------------------===//
8 // This file is a part of AddressSanitizer, an address sanity checker.
10 // ASan-private header for asan_stack.cc.
11 //===----------------------------------------------------------------------===//
15 #include "asan_flags.h"
16 #include "asan_thread.h"
17 #include "sanitizer_common/sanitizer_flags.h"
18 #include "sanitizer_common/sanitizer_stacktrace.h"
22 void PrintStack(StackTrace
*stack
);
23 void PrintStack(const uptr
*trace
, uptr size
);
27 // Get the stack trace with the given pc and bp.
28 // The pc will be in the position 0 of the resulting stack trace.
29 // The bp may refer to the current frame or to the caller's frame.
31 #define GET_STACK_TRACE_WITH_PC_AND_BP(max_s, pc, bp, fast) \
33 stack.Unwind(max_s, pc, bp, 0, 0, fast)
35 #define GET_STACK_TRACE_WITH_PC_AND_BP(max_s, pc, bp, fast) \
41 if ((t = GetCurrentThread()) && !t->isUnwinding()) { \
42 uptr stack_top = t->stack_top(); \
43 uptr stack_bottom = t->stack_bottom(); \
44 ScopedUnwinding unwind_scope(t); \
45 stack.Unwind(max_s, pc, bp, stack_top, stack_bottom, fast); \
46 } else if (t == 0 && !fast) { \
47 /* If GetCurrentThread() has failed, try to do slow unwind anyways. */ \
48 stack.Unwind(max_s, pc, bp, 0, 0, false); \
52 #endif // SANITIZER_WINDOWS
54 // NOTE: A Rule of thumb is to retrieve stack trace in the interceptors
55 // as early as possible (in functions exposed to the user), as we generally
56 // don't want stack trace to contain functions from ASan internals.
58 #define GET_STACK_TRACE(max_size, fast) \
59 GET_STACK_TRACE_WITH_PC_AND_BP(max_size, \
60 StackTrace::GetCurrentPc(), GET_CURRENT_FRAME(), fast)
62 #define GET_STACK_TRACE_FATAL(pc, bp) \
63 GET_STACK_TRACE_WITH_PC_AND_BP(kStackTraceMax, pc, bp, \
64 common_flags()->fast_unwind_on_fatal)
66 #define GET_STACK_TRACE_FATAL_HERE \
67 GET_STACK_TRACE(kStackTraceMax, common_flags()->fast_unwind_on_fatal)
69 #define GET_STACK_TRACE_THREAD \
70 GET_STACK_TRACE(kStackTraceMax, true)
72 #define GET_STACK_TRACE_MALLOC \
73 GET_STACK_TRACE(common_flags()->malloc_context_size, \
74 common_flags()->fast_unwind_on_malloc)
76 #define GET_STACK_TRACE_FREE GET_STACK_TRACE_MALLOC
78 #define PRINT_CURRENT_STACK() \
80 GET_STACK_TRACE_FATAL_HERE; \
84 #endif // ASAN_STACK_H