0b64328944
For a main thread a thread object is created by the CRT0 before _main gets called so that _main can already run in a generic environment that, e.g., catches stack overflows as a page-fault instead of corrupting the BSS. Additionally dynamic programs have only one CRT0 - the one of the LDSO - which does the initialization for both LDSO and program. ref #989
60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
/*
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* \brief Fiasco.OC specific thread bootstrap code
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* \author Stefan Kalkowski
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* \author Martin Stein
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* \date 2011-01-20
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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 <util/construct_at.h>
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#include <base/thread.h>
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/*****************************
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** Startup library support **
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*****************************/
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void prepare_init_main_thread()
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{
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using namespace Genode;
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enum { THREAD_CAP_ID = 1 };
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Cap_index * ci(cap_map()->insert(THREAD_CAP_ID, Fiasco::MAIN_THREAD_CAP));
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Fiasco::l4_utcb_tcr()->user[Fiasco::UTCB_TCR_BADGE] = (unsigned long)ci;
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Fiasco::l4_utcb_tcr()->user[Fiasco::UTCB_TCR_THREAD_OBJ] = 0;
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}
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void prepare_reinit_main_thread()
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{
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using namespace Genode;
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construct_at<Capability_map>(cap_map());
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cap_idx_alloc()->reinit();
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prepare_init_main_thread();
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}
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/*****************
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** Thread_base **
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*****************/
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void Genode::Thread_base::_thread_bootstrap() { }
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void Genode::Thread_base::_thread_start()
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{
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using namespace Genode;
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Thread_base::myself()->_thread_bootstrap();
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Thread_base::myself()->entry();
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Thread_base::myself()->_join_lock.unlock();
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Lock sleep_forever_lock(Lock::LOCKED);
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sleep_forever_lock.lock();
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}
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