30 lines
676 B
C++
30 lines
676 B
C++
/*
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* \brief Exception vector initialization
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* \author Sebastian Sumpf
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* \date 2015-07-12
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*/
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/*
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* Copyright (C) 2015-2016 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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#include <kernel/cpu.h>
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extern int _machine_begin, _machine_end;
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extern "C" void setup_riscv_exception_vector()
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{
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using namespace Genode;
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/* retrieve exception vector */
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addr_t vector;
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asm volatile ("csrr %0, mtvec\n" : "=r"(vector));
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/* copy machine mode exception vector */
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memcpy((void *)vector,
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&_machine_begin, (addr_t)&_machine_end - (addr_t)&_machine_begin);
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}
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