1cc8eae8aSDavid Gibson /* 2cc8eae8aSDavid Gibson * PowerPC MMU stub handling for user mode emulation 3cc8eae8aSDavid Gibson * 4cc8eae8aSDavid Gibson * Copyright (c) 2003-2007 Jocelyn Mayer 5cc8eae8aSDavid Gibson * Copyright (c) 2013 David Gibson, IBM Corporation. 6cc8eae8aSDavid Gibson * 7cc8eae8aSDavid Gibson * This library is free software; you can redistribute it and/or 8cc8eae8aSDavid Gibson * modify it under the terms of the GNU Lesser General Public 9cc8eae8aSDavid Gibson * License as published by the Free Software Foundation; either 10cc8eae8aSDavid Gibson * version 2 of the License, or (at your option) any later version. 11cc8eae8aSDavid Gibson * 12cc8eae8aSDavid Gibson * This library is distributed in the hope that it will be useful, 13cc8eae8aSDavid Gibson * but WITHOUT ANY WARRANTY; without even the implied warranty of 14cc8eae8aSDavid Gibson * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15cc8eae8aSDavid Gibson * Lesser General Public License for more details. 16cc8eae8aSDavid Gibson * 17cc8eae8aSDavid Gibson * You should have received a copy of the GNU Lesser General Public 18cc8eae8aSDavid Gibson * License along with this library; if not, see <http://www.gnu.org/licenses/>. 19cc8eae8aSDavid Gibson */ 20cc8eae8aSDavid Gibson 210d75590dSPeter Maydell #include "qemu/osdep.h" 22cc8eae8aSDavid Gibson #include "cpu.h" 23cc8eae8aSDavid Gibson 247510454eSAndreas Färber int ppc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw, 25cc8eae8aSDavid Gibson int mmu_idx) 26cc8eae8aSDavid Gibson { 277510454eSAndreas Färber PowerPCCPU *cpu = POWERPC_CPU(cs); 287510454eSAndreas Färber CPUPPCState *env = &cpu->env; 29cc8eae8aSDavid Gibson int exception, error_code; 30cc8eae8aSDavid Gibson 31cc8eae8aSDavid Gibson if (rw == 2) { 32cc8eae8aSDavid Gibson exception = POWERPC_EXCP_ISI; 33cc8eae8aSDavid Gibson error_code = 0x40000000; 34cc8eae8aSDavid Gibson } else { 35cc8eae8aSDavid Gibson exception = POWERPC_EXCP_DSI; 36cc8eae8aSDavid Gibson error_code = 0x40000000; 37cc8eae8aSDavid Gibson if (rw) { 38cc8eae8aSDavid Gibson error_code |= 0x02000000; 39cc8eae8aSDavid Gibson } 40cc8eae8aSDavid Gibson env->spr[SPR_DAR] = address; 41cc8eae8aSDavid Gibson env->spr[SPR_DSISR] = error_code; 42cc8eae8aSDavid Gibson } 4327103424SAndreas Färber cs->exception_index = exception; 44cc8eae8aSDavid Gibson env->error_code = error_code; 45cc8eae8aSDavid Gibson 46cc8eae8aSDavid Gibson return 1; 47cc8eae8aSDavid Gibson } 48