82 lines
1.7 KiB
C++
82 lines
1.7 KiB
C++
/*
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* \brief Fiasco.OC pager framework
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* \author Stefan Kalkowski
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* \date 2011-09-08
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*
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* ARM specific parts, when handling cpu-exceptions.
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*/
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/*
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* Copyright (C) 2011-2017 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 Affero General Public License version 3.
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*/
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/* core includes */
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#include <ipc_pager.h>
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namespace Fiasco {
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#include <l4/sys/utcb.h>
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}
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enum Exceptions { EX_REGS = 0x500000 };
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void Genode::Ipc_pager::_parse_exception()
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{
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if (Fiasco::l4_utcb_exc()->err == EX_REGS)
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_type = PAUSE;
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else
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_type = EXCEPTION;
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}
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void Genode::Ipc_pager::get_regs(Foc_thread_state &state) const
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{
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state.ip = _regs.pc;
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state.sp = _regs.sp;
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state.r0 = _regs.r[0];
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state.r1 = _regs.r[1];
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state.r2 = _regs.r[2];
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state.r3 = _regs.r[3];
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state.r4 = _regs.r[4];
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state.r5 = _regs.r[5];
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state.r6 = _regs.r[6];
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state.r7 = _regs.r[7];
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state.r8 = _regs.r[8];
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state.r9 = _regs.r[9];
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state.r10 = _regs.r[10];
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state.r11 = _regs.r[11];
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state.r12 = _regs.r[12];
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state.lr = _regs.ulr;
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state.cpsr = _regs.cpsr;
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}
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void Genode::Ipc_pager::set_regs(Foc_thread_state const &state)
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{
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_regs.pc = state.ip;
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_regs.sp = state.sp;
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_regs.r[0] = state.r0;
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_regs.r[1] = state.r1;
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_regs.r[2] = state.r2;
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_regs.r[3] = state.r3;
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_regs.r[4] = state.r4;
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_regs.r[5] = state.r5;
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_regs.r[6] = state.r6;
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_regs.r[7] = state.r7;
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_regs.r[8] = state.r8;
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_regs.r[9] = state.r9;
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_regs.r[10] = state.r10;
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_regs.r[11] = state.r11;
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_regs.r[12] = state.r12;
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_regs.ulr = state.lr;
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_regs.cpsr = state.cpsr;
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}
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bool Genode::Ipc_pager::exec_fault() const
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{
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return (_pf_addr & 4) && !(_pf_addr & 1);
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}
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