forked from OSchip/llvm-project
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
//===-- sanitizer_stacktrace.h ----------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file is shared between AddressSanitizer and ThreadSanitizer
|
|
// run-time libraries.
|
|
//===----------------------------------------------------------------------===//
|
|
#ifndef SANITIZER_STACKTRACE_H
|
|
#define SANITIZER_STACKTRACE_H
|
|
|
|
#include "sanitizer_internal_defs.h"
|
|
|
|
namespace __sanitizer {
|
|
|
|
static const uptr kStackTraceMax = 256;
|
|
|
|
#if SANITIZER_LINUX && (defined(__arm__) || \
|
|
defined(__powerpc__) || defined(__powerpc64__) || \
|
|
defined(__sparc__) || \
|
|
defined(__mips__))
|
|
# define SANITIZER_CAN_FAST_UNWIND 0
|
|
#elif SANITIZER_WINDOWS
|
|
# define SANITIZER_CAN_FAST_UNWIND 0
|
|
#else
|
|
# define SANITIZER_CAN_FAST_UNWIND 1
|
|
#endif
|
|
|
|
struct StackTrace {
|
|
typedef bool (*SymbolizeCallback)(const void *pc, char *out_buffer,
|
|
int out_size);
|
|
uptr top_frame_bp;
|
|
uptr size;
|
|
uptr trace[kStackTraceMax];
|
|
|
|
// Prints a symbolized stacktrace, followed by an empty line.
|
|
static void PrintStack(const uptr *addr, uptr size);
|
|
void Print() const {
|
|
PrintStack(trace, size);
|
|
}
|
|
|
|
void CopyFrom(const uptr *src, uptr src_size) {
|
|
top_frame_bp = 0;
|
|
size = src_size;
|
|
if (size > kStackTraceMax) size = kStackTraceMax;
|
|
for (uptr i = 0; i < size; i++)
|
|
trace[i] = src[i];
|
|
}
|
|
|
|
static bool WillUseFastUnwind(bool request_fast_unwind) {
|
|
// Check if fast unwind is available. Fast unwind is the only option on Mac.
|
|
if (!SANITIZER_CAN_FAST_UNWIND)
|
|
return false;
|
|
else if (SANITIZER_MAC)
|
|
return true;
|
|
return request_fast_unwind;
|
|
}
|
|
|
|
void Unwind(uptr max_depth, uptr pc, uptr bp, uptr stack_top,
|
|
uptr stack_bottom, bool request_fast_unwind);
|
|
|
|
static uptr GetCurrentPc();
|
|
static uptr GetPreviousInstructionPc(uptr pc);
|
|
|
|
private:
|
|
void FastUnwindStack(uptr pc, uptr bp, uptr stack_top, uptr stack_bottom,
|
|
uptr max_depth);
|
|
void SlowUnwindStack(uptr pc, uptr max_depth);
|
|
void PopStackFrames(uptr count);
|
|
uptr LocatePcInTrace(uptr pc);
|
|
};
|
|
|
|
} // namespace __sanitizer
|
|
|
|
// Use this macro if you want to print stack trace with the caller
|
|
// of the current function in the top frame.
|
|
#define GET_CALLER_PC_BP_SP \
|
|
uptr bp = GET_CURRENT_FRAME(); \
|
|
uptr pc = GET_CALLER_PC(); \
|
|
uptr local_stack; \
|
|
uptr sp = (uptr)&local_stack
|
|
|
|
// Use this macro if you want to print stack trace with the current
|
|
// function in the top frame.
|
|
#define GET_CURRENT_PC_BP_SP \
|
|
uptr bp = GET_CURRENT_FRAME(); \
|
|
uptr pc = StackTrace::GetCurrentPc(); \
|
|
uptr local_stack; \
|
|
uptr sp = (uptr)&local_stack
|
|
|
|
|
|
#endif // SANITIZER_STACKTRACE_H
|