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//===-- 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
#else
#define SANITIZER_CAN_FAST_UNWIND 1
#endif
struct StackTrace {
typedef bool (*SymbolizeCallback)(const void *pc, char *out_buffer,
int out_size);
uptr size;
uptr trace[kStackTraceMax];
// Prints a symbolized stacktrace, followed by an empty line.
static void PrintStack(const uptr *addr, uptr size,
SymbolizeCallback symbolize_callback = 0);
void CopyFrom(const uptr *src, uptr src_size) {
size = src_size;
if (size > kStackTraceMax) size = kStackTraceMax;
for (uptr i = 0; i < size; i++)
trace[i] = src[i];
}
void Unwind(uptr max_depth, uptr pc, uptr bp, uptr stack_top,
uptr stack_bottom, bool fast);
// FIXME: Make FastUnwindStack and SlowUnwindStack private methods.
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);
static uptr GetCurrentPc();
static uptr GetPreviousInstructionPc(uptr pc);
static uptr CompressStack(StackTrace *stack,
u32 *compressed, uptr size);
static void UncompressStack(StackTrace *stack,
u32 *compressed, uptr size);
};
} // 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
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