从信号处理程序打印堆栈跟踪

I need to print stack trace from a signal handler of 64-bit mutli-threaded C++ application running on Linux. Although I found several code examples, none of them compiles. My blocking point is getting the caller's (the point where the signal was generated) address from the ucontext_t structure. All of the information I could find, points to the EIP register as either ucontext.gregs[REG_EIP] or ucontext.eip. It looks like both of them are x86-specific. I need 64-bit compliant code for both Intel and AMD CPUs. Can anybody help?I need to print stack trace from a signal handl