100b70788SNikunj A Dadhania /* 200b70788SNikunj A Dadhania * PowerPC CPU routines for qemu. 300b70788SNikunj A Dadhania * 400b70788SNikunj A Dadhania * Copyright (c) 2017 Nikunj A Dadhania, IBM Corporation. 500b70788SNikunj A Dadhania * 600b70788SNikunj A Dadhania * This library is free software; you can redistribute it and/or 700b70788SNikunj A Dadhania * modify it under the terms of the GNU Lesser General Public 800b70788SNikunj A Dadhania * License as published by the Free Software Foundation; either 96bd039cdSChetan Pant * version 2.1 of the License, or (at your option) any later version. 1000b70788SNikunj A Dadhania * 1100b70788SNikunj A Dadhania * This library is distributed in the hope that it will be useful, 1200b70788SNikunj A Dadhania * but WITHOUT ANY WARRANTY; without even the implied warranty of 1300b70788SNikunj A Dadhania * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 1400b70788SNikunj A Dadhania * Lesser General Public License for more details. 1500b70788SNikunj A Dadhania * 1600b70788SNikunj A Dadhania * You should have received a copy of the GNU Lesser General Public 1700b70788SNikunj A Dadhania * License along with this library; if not, see <http://www.gnu.org/licenses/>. 1800b70788SNikunj A Dadhania */ 1900b70788SNikunj A Dadhania 2000b70788SNikunj A Dadhania #include "qemu/osdep.h" 2100b70788SNikunj A Dadhania #include "cpu.h" 2200b70788SNikunj A Dadhania #include "cpu-models.h" 23*c19940dbSBruno Larsen (billionai) #include "fpu/softfloat-helpers.h" 2400b70788SNikunj A Dadhania 2500b70788SNikunj A Dadhania target_ulong cpu_read_xer(CPUPPCState *env) 2600b70788SNikunj A Dadhania { 27dd09c361SNikunj A Dadhania if (is_isa300(env)) { 28dd09c361SNikunj A Dadhania return env->xer | (env->so << XER_SO) | 29dd09c361SNikunj A Dadhania (env->ov << XER_OV) | (env->ca << XER_CA) | 30dd09c361SNikunj A Dadhania (env->ov32 << XER_OV32) | (env->ca32 << XER_CA32); 31dd09c361SNikunj A Dadhania } 32dd09c361SNikunj A Dadhania 3300b70788SNikunj A Dadhania return env->xer | (env->so << XER_SO) | (env->ov << XER_OV) | 3400b70788SNikunj A Dadhania (env->ca << XER_CA); 3500b70788SNikunj A Dadhania } 3600b70788SNikunj A Dadhania 3700b70788SNikunj A Dadhania void cpu_write_xer(CPUPPCState *env, target_ulong xer) 3800b70788SNikunj A Dadhania { 3900b70788SNikunj A Dadhania env->so = (xer >> XER_SO) & 1; 4000b70788SNikunj A Dadhania env->ov = (xer >> XER_OV) & 1; 4100b70788SNikunj A Dadhania env->ca = (xer >> XER_CA) & 1; 42dd09c361SNikunj A Dadhania /* write all the flags, while reading back check of isa300 */ 43dd09c361SNikunj A Dadhania env->ov32 = (xer >> XER_OV32) & 1; 44dd09c361SNikunj A Dadhania env->ca32 = (xer >> XER_CA32) & 1; 45dd09c361SNikunj A Dadhania env->xer = xer & ~((1ul << XER_SO) | 46dd09c361SNikunj A Dadhania (1ul << XER_OV) | (1ul << XER_CA) | 47dd09c361SNikunj A Dadhania (1ul << XER_OV32) | (1ul << XER_CA32)); 4800b70788SNikunj A Dadhania } 49*c19940dbSBruno Larsen (billionai) 50*c19940dbSBruno Larsen (billionai) void ppc_store_vscr(CPUPPCState *env, uint32_t vscr) 51*c19940dbSBruno Larsen (billionai) { 52*c19940dbSBruno Larsen (billionai) env->vscr = vscr & ~(1u << VSCR_SAT); 53*c19940dbSBruno Larsen (billionai) /* Which bit we set is completely arbitrary, but clear the rest. */ 54*c19940dbSBruno Larsen (billionai) env->vscr_sat.u64[0] = vscr & (1u << VSCR_SAT); 55*c19940dbSBruno Larsen (billionai) env->vscr_sat.u64[1] = 0; 56*c19940dbSBruno Larsen (billionai) set_flush_to_zero((vscr >> VSCR_NJ) & 1, &env->vec_status); 57*c19940dbSBruno Larsen (billionai) } 58*c19940dbSBruno Larsen (billionai) 59*c19940dbSBruno Larsen (billionai) uint32_t ppc_get_vscr(CPUPPCState *env) 60*c19940dbSBruno Larsen (billionai) { 61*c19940dbSBruno Larsen (billionai) uint32_t sat = (env->vscr_sat.u64[0] | env->vscr_sat.u64[1]) != 0; 62*c19940dbSBruno Larsen (billionai) return env->vscr | (sat << VSCR_SAT); 63*c19940dbSBruno Larsen (billionai) } 64