78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/*
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* \brief Kernel backend for execution contexts in userland
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* \author Martin Stein
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* \date 2013-09-15
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*/
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/*
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* Copyright (C) 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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/* core includes */
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#include <kernel/thread.h>
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#include <kernel/pd.h>
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#include <platform_thread.h>
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#include <platform_pd.h>
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using namespace Kernel;
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char const * Kernel::Thread::label()
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{
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if (!platform_thread()) {
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if (!phys_utcb()) { return "idle"; }
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return "core";
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}
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return platform_thread()->name();
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}
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char const * Kernel::Thread::pd_label()
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{
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if (core()) { return "core"; }
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if (!pd()) { return "?"; }
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return pd()->platform_pd()->label();
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}
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void
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Kernel::Thread::prepare_to_start(void * const ip,
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void * const sp,
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unsigned const cpu_id,
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unsigned const pd_id,
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Native_utcb * const utcb_phys,
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Native_utcb * const utcb_virt,
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bool const main)
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{
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assert(_state == AWAIT_START)
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/* FIXME: support SMP */
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if (cpu_id) { PERR("multicore processing not supported"); }
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/* store thread parameters */
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_phys_utcb = utcb_phys;
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_virt_utcb = utcb_virt;
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_pd_id = pd_id;
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/* join a protection domain */
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Pd * const pd = Pd::pool()->object(_pd_id);
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assert(pd);
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addr_t const tlb = pd->tlb()->base();
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/* initialize CPU context */
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User_context * const c = static_cast<User_context *>(this);
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bool const core = (_pd_id == core_id());
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if (!main) { c->init_thread(ip, sp, tlb, pd_id); }
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else if (!core) { c->init_main_thread(ip, utcb_virt, tlb, pd_id); }
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else { c->init_core_main_thread(ip, sp, tlb, pd_id); }
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/* print log message */
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if (START_VERBOSE) {
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PINF("in program %u '%s' start thread %u '%s'",
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this->pd_id(), pd_label(), id(), label());
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}
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}
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