1 /* 2 * PowerPC MMU stub handling for user mode emulation 3 * 4 * Copyright (c) 2003-2007 Jocelyn Mayer 5 * Copyright (c) 2013 David Gibson, IBM Corporation. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #include "qemu/osdep.h" 22 #include "cpu.h" 23 24 int ppc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw, 25 int mmu_idx) 26 { 27 PowerPCCPU *cpu = POWERPC_CPU(cs); 28 CPUPPCState *env = &cpu->env; 29 int exception, error_code; 30 31 if (rw == 2) { 32 exception = POWERPC_EXCP_ISI; 33 error_code = 0x40000000; 34 } else { 35 exception = POWERPC_EXCP_DSI; 36 error_code = 0x40000000; 37 if (rw) { 38 error_code |= 0x02000000; 39 } 40 env->spr[SPR_DAR] = address; 41 env->spr[SPR_DSISR] = error_code; 42 } 43 cs->exception_index = exception; 44 env->error_code = error_code; 45 46 return 1; 47 } 48