/* * 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 "cpu.h" int ppc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, 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; }