forked from OSchip/llvm-project
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
//===-- sanitizer_stacktrace.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 shared between AddressSanitizer and ThreadSanitizer
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// run-time libraries.
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//===----------------------------------------------------------------------===//
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#ifndef SANITIZER_STACKTRACE_H
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#define SANITIZER_STACKTRACE_H
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#include "sanitizer_internal_defs.h"
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namespace __sanitizer {
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static const uptr kStackTraceMax = 256;
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#if SANITIZER_LINUX && (defined(__arm__) || \
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defined(__powerpc__) || defined(__powerpc64__) || \
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defined(__sparc__) || \
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defined(__mips__))
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#define SANITIZER_CAN_FAST_UNWIND 0
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#else
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#define SANITIZER_CAN_FAST_UNWIND 1
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#endif
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struct StackTrace {
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typedef bool (*SymbolizeCallback)(const void *pc, char *out_buffer,
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int out_size);
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uptr size;
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uptr trace[kStackTraceMax];
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static void PrintStack(const uptr *addr, uptr size,
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SymbolizeCallback symbolize_callback = 0);
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void CopyFrom(const uptr *src, uptr src_size) {
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size = src_size;
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if (size > kStackTraceMax) size = kStackTraceMax;
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for (uptr i = 0; i < size; i++)
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trace[i] = src[i];
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}
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void Unwind(uptr max_depth, uptr pc, uptr bp, uptr stack_top,
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uptr stack_bottom, bool fast);
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// FIXME: Make FastUnwindStack and SlowUnwindStack private methods.
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void FastUnwindStack(uptr pc, uptr bp, uptr stack_top, uptr stack_bottom,
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uptr max_depth);
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void SlowUnwindStack(uptr pc, uptr max_depth);
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void PopStackFrames(uptr count);
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static uptr GetCurrentPc();
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static uptr GetPreviousInstructionPc(uptr pc);
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static uptr CompressStack(StackTrace *stack,
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u32 *compressed, uptr size);
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static void UncompressStack(StackTrace *stack,
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u32 *compressed, uptr size);
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};
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} // namespace __sanitizer
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// Use this macro if you want to print stack trace with the caller
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// of the current function in the top frame.
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#define GET_CALLER_PC_BP_SP \
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uptr bp = GET_CURRENT_FRAME(); \
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uptr pc = GET_CALLER_PC(); \
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uptr local_stack; \
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uptr sp = (uptr)&local_stack
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// Use this macro if you want to print stack trace with the current
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// function in the top frame.
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#define GET_CURRENT_PC_BP_SP \
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uptr bp = GET_CURRENT_FRAME(); \
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uptr pc = StackTrace::GetCurrentPc(); \
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uptr local_stack; \
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uptr sp = (uptr)&local_stack
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#endif // SANITIZER_STACKTRACE_H
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