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os: add backtrace utility for arm_64 

Fix #3621
This commit is contained in:
Stefan Kalkowski 2020-01-21 14:44:05 +01:00 committed by Christian Helmuth
parent 79dff674fd
commit 22498e0b09
1 changed files with 41 additions and 0 deletions
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41
repos/os/include/spec/arm_64/os/backtrace.h Normal file
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/*
* \brief Backtrace helper utility
* \date 2020-01-21
* \author Stefan Kalkowski
*/
/*
* Copyright (C) 2020 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#ifndef _INCLUDE__SPEC__ARM_64__OS__BACKTRACE_H_
#define _INCLUDE__SPEC__ARM_64__OS__BACKTRACE_H_
#include <base/log.h>
namespace Genode { void inline backtrace() __attribute__((always_inline)); }
/**
* Print frame pointer based backtrace
*
* To use this function compile your code with the -fno-omit-frame-pointer GCC
* option.
*/
void inline Genode::backtrace()
{
addr_t * fp;
asm volatile ("mov %0, x29" : "=r"(fp) ::);
while (fp) {
addr_t ip = fp[1];
fp = (addr_t*) fp[0];
Genode::log(Hex(ip));
}
}
#endif /* _INCLUDE__SPEC__ARM_64__OS__BACKTRACE_H_ */