50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
/*
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* \brief Kernel backend for execution contexts in userland
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* \author Adrian-Ken Rueegsegger
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* \author Reto Buerki
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* \date 2015-04-28
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*/
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/*
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* Copyright (C) 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 <pic.h>
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using namespace Kernel;
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void Thread::exception(unsigned const cpu)
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{
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switch (trapno) {
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case PAGE_FAULT:
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_mmu_exception();
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return;
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case NO_MATH_COPROC:
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if (_cpu->retry_fpu_instr(&_lazy_state)) { return; }
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PWRN("%s -> %s: FPU error", pd_label(), label());
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_stop();
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return;
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case UNDEFINED_INSTRUCTION:
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PWRN("%s -> %s: undefined instruction at ip=%p",
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pd_label(), label(), (void*)ip);
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_stop();
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return;
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case SUPERVISOR_CALL:
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_call();
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return;
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}
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if (trapno >= INTERRUPTS_START && trapno <= INTERRUPTS_END) {
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pic()->irq_occurred(trapno);
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_interrupt(cpu);
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return;
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}
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PWRN("%s -> %s: triggered unknown exception %lu with error code %lu"
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" at ip=%p", pd_label(), label(), trapno, errcode, (void*)ip);
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_stop();
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}
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