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