1 /* 2 * PowerPC CPU routines for qemu. 3 * 4 * Copyright (c) 2017 Nikunj A Dadhania, IBM Corporation. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include "qemu/osdep.h" 21 #include "cpu.h" 22 #include "cpu-models.h" 23 24 target_ulong cpu_read_xer(CPUPPCState *env) 25 { 26 if (is_isa300(env)) { 27 return env->xer | (env->so << XER_SO) | 28 (env->ov << XER_OV) | (env->ca << XER_CA) | 29 (env->ov32 << XER_OV32) | (env->ca32 << XER_CA32); 30 } 31 32 return env->xer | (env->so << XER_SO) | (env->ov << XER_OV) | 33 (env->ca << XER_CA); 34 } 35 36 void cpu_write_xer(CPUPPCState *env, target_ulong xer) 37 { 38 env->so = (xer >> XER_SO) & 1; 39 env->ov = (xer >> XER_OV) & 1; 40 env->ca = (xer >> XER_CA) & 1; 41 /* write all the flags, while reading back check of isa300 */ 42 env->ov32 = (xer >> XER_OV32) & 1; 43 env->ca32 = (xer >> XER_CA32) & 1; 44 env->xer = xer & ~((1ul << XER_SO) | 45 (1ul << XER_OV) | (1ul << XER_CA) | 46 (1ul << XER_OV32) | (1ul << XER_CA32)); 47 } 48