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47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* PowerPC MMU stub handling for user mode emulation
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*
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* Copyright (c) 2003-2007 Jocelyn Mayer
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* Copyright (c) 2013 David Gibson, IBM Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "cpu.h"
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int ppc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
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int mmu_idx)
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{
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PowerPCCPU *cpu = POWERPC_CPU(cs);
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CPUPPCState *env = &cpu->env;
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int exception, error_code;
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if (rw == 2) {
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exception = POWERPC_EXCP_ISI;
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error_code = 0x40000000;
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} else {
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exception = POWERPC_EXCP_DSI;
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error_code = 0x40000000;
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if (rw) {
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error_code |= 0x02000000;
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}
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env->spr[SPR_DAR] = address;
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env->spr[SPR_DSISR] = error_code;
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}
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cs->exception_index = exception;
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env->error_code = error_code;
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return 1;
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}
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