108 lines
2.3 KiB
C++
108 lines
2.3 KiB
C++
/*
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* \brief CPU specific implementations of core
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* \author Martin Stein
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* \author Reto Buerki
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* \author Stefan Kalkowski
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* \date 2013-11-11
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*/
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/*
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* Copyright (C) 2013, 2015 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 <kernel/kernel.h>
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using namespace Kernel;
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/*************************
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** Kernel::Thread_base **
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*************************/
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Thread_base::Thread_base(Thread * const t)
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:
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_fault(t),
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_fault_pd(0),
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_fault_addr(0),
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_fault_writes(0),
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_fault_signal(0)
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{ }
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/********************
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** Kernel::Thread **
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********************/
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addr_t Thread::* Thread::_reg(addr_t const id) const
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{
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static addr_t Thread::* const _regs[] = {
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/* [0] */ (addr_t Thread::*)&Thread::ip,
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/* [1] */ (addr_t Thread::*)&Thread::sp,
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/* [2] */ (addr_t Thread::*)&Thread::_fault_pd,
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/* [3] */ (addr_t Thread::*)&Thread::_fault_addr,
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/* [4] */ (addr_t Thread::*)&Thread::_fault_writes,
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/* [5] */ (addr_t Thread::*)&Thread::_fault_signal
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};
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return id < sizeof(_regs)/sizeof(_regs[0]) ? _regs[id] : 0;
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}
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Thread_event Thread::* Thread::_event(unsigned const id) const
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{
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static Thread_event Thread::* _events[] = {
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/* [0] */ &Thread::_fault
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};
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return id < sizeof(_events)/sizeof(_events[0]) ? _events[id] : 0;
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}
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void Thread::_mmu_exception()
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{
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_become_inactive(AWAITS_RESUME);
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_fault_pd = (addr_t)_pd->platform_pd();
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_fault_signal = _fault.signal_context_id();
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_fault_addr = Cpu::Cr2::read();
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/**
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* core should never raise a page-fault,
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* if this happens print out an error message with debug information
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*/
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if (_pd == Kernel::core_pd())
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PERR("Pagefault in core thread (%s): ip=%p fault=%p",
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label(), (void*)ip, (void*)_fault_addr);
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_fault.submit();
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return;
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}
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/*************************
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** Kernel::Cpu_context **
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*************************/
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void Kernel::Cpu_context::_init(size_t const stack_size, addr_t const table)
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{ }
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/*************************
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** CPU-state utilities **
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*************************/
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typedef Thread_reg_id Reg_id;
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static addr_t const _cpu_state_regs[] = { };
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addr_t const * cpu_state_regs() { return _cpu_state_regs; }
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size_t cpu_state_regs_length()
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{
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return sizeof(_cpu_state_regs)/sizeof(_cpu_state_regs[0]);
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}
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