e142d0d2e8
With this patch, functions which execute blocking syscalls on Fiasco.OC are built with frame pointers to get a correct backtrace shown in GDB. Also, the backtrace test for a thread currently executing a syscall now traces the 'Genode::Thread_base::join()' function instead of 'Genode::sleep_forever()', because base-nova has a custom implementation of 'Genode::sleep_forever()' with a different backtrace than on Fiasco.OC. Fixes #1061.
97 lines
1.8 KiB
C++
97 lines
1.8 KiB
C++
/*
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* \brief GDB Monitor test
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* \author Christian Prochaska
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* \date 2011-05-24
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*/
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/*
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* Copyright (C) 2011-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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/* Genode includes */
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#include <base/sleep.h>
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#include <base/thread.h>
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#include <timer_session/connection.h>
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/* libc includes */
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#include <stdio.h>
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/* a variable to be modified with GDB */
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int test_var = 1;
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/* a thread to test GDB thread switching support */
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class Test_thread : public Genode::Thread<2*4096>
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{
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public:
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Test_thread() : Thread("test") { }
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void func()
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{
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/*
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* make sure that the main thread is sleeping in
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* Genode::sleep_forever() when the segfault happens
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*/
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static Timer::Connection timer;
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timer.msleep(500);
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*(int *)0 = 42;
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}
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void entry() /* set a breakpoint here to test the 'info threads' command */
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{
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func();
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Genode::sleep_forever();
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}
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};
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/*
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* This function returns the current value of 'test_var' + 1 and can be called from
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* GDB using the 'call' or 'print' commands
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*/
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int test_var_func()
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{
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return test_var + 1;
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}
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/* this function returns a value to make itself appear in the stack trace when building with -O2 */
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int func2()
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{
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/* set the first breakpoint here to test the 'backtrace' command for a
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* thread which is not in a syscall */
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puts("in func2()\n");
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/* call 'test_var_func()', so the compiler does not throw the function away */
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printf("test_var_func() returned %d\n", test_var_func());
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return 0;
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}
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/* this function returns a value to make itself appear in the stack trace when building with -O2 */
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int func1()
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{
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func2();
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return 0;
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}
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int main(void)
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{
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Test_thread test_thread;
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func1();
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test_thread.start();
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test_thread.join();
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return 0;
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}
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