1 /* 2 * TriCore emulation for qemu: main translation routines. 3 * 4 * Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn 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 "qapi/error.h" 22 #include "cpu.h" 23 #include "exec/exec-all.h" 24 #include "qemu/error-report.h" 25 26 static inline void set_feature(CPUTriCoreState *env, int feature) 27 { 28 env->features |= 1ULL << feature; 29 } 30 31 static gchar *tricore_gdb_arch_name(CPUState *cs) 32 { 33 return g_strdup("tricore"); 34 } 35 36 static void tricore_cpu_set_pc(CPUState *cs, vaddr value) 37 { 38 TriCoreCPU *cpu = TRICORE_CPU(cs); 39 CPUTriCoreState *env = &cpu->env; 40 41 env->PC = value & ~(target_ulong)1; 42 } 43 44 static vaddr tricore_cpu_get_pc(CPUState *cs) 45 { 46 TriCoreCPU *cpu = TRICORE_CPU(cs); 47 CPUTriCoreState *env = &cpu->env; 48 49 return env->PC; 50 } 51 52 static void tricore_cpu_synchronize_from_tb(CPUState *cs, 53 const TranslationBlock *tb) 54 { 55 TriCoreCPU *cpu = TRICORE_CPU(cs); 56 CPUTriCoreState *env = &cpu->env; 57 58 env->PC = tb_pc(tb); 59 } 60 61 static void tricore_cpu_reset(DeviceState *dev) 62 { 63 CPUState *s = CPU(dev); 64 TriCoreCPU *cpu = TRICORE_CPU(s); 65 TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu); 66 CPUTriCoreState *env = &cpu->env; 67 68 tcc->parent_reset(dev); 69 70 cpu_state_reset(env); 71 } 72 73 static bool tricore_cpu_has_work(CPUState *cs) 74 { 75 return true; 76 } 77 78 static void tricore_cpu_realizefn(DeviceState *dev, Error **errp) 79 { 80 CPUState *cs = CPU(dev); 81 TriCoreCPU *cpu = TRICORE_CPU(dev); 82 TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev); 83 CPUTriCoreState *env = &cpu->env; 84 Error *local_err = NULL; 85 86 cpu_exec_realizefn(cs, &local_err); 87 if (local_err != NULL) { 88 error_propagate(errp, local_err); 89 return; 90 } 91 92 /* Some features automatically imply others */ 93 if (tricore_feature(env, TRICORE_FEATURE_161)) { 94 set_feature(env, TRICORE_FEATURE_16); 95 } 96 97 if (tricore_feature(env, TRICORE_FEATURE_16)) { 98 set_feature(env, TRICORE_FEATURE_131); 99 } 100 if (tricore_feature(env, TRICORE_FEATURE_131)) { 101 set_feature(env, TRICORE_FEATURE_13); 102 } 103 cpu_reset(cs); 104 qemu_init_vcpu(cs); 105 106 tcc->parent_realize(dev, errp); 107 } 108 109 110 static void tricore_cpu_initfn(Object *obj) 111 { 112 TriCoreCPU *cpu = TRICORE_CPU(obj); 113 114 cpu_set_cpustate_pointers(cpu); 115 } 116 117 static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model) 118 { 119 ObjectClass *oc; 120 char *typename; 121 122 typename = g_strdup_printf(TRICORE_CPU_TYPE_NAME("%s"), cpu_model); 123 oc = object_class_by_name(typename); 124 g_free(typename); 125 if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) || 126 object_class_is_abstract(oc)) { 127 return NULL; 128 } 129 return oc; 130 } 131 132 static void tc1796_initfn(Object *obj) 133 { 134 TriCoreCPU *cpu = TRICORE_CPU(obj); 135 136 set_feature(&cpu->env, TRICORE_FEATURE_13); 137 } 138 139 static void tc1797_initfn(Object *obj) 140 { 141 TriCoreCPU *cpu = TRICORE_CPU(obj); 142 143 set_feature(&cpu->env, TRICORE_FEATURE_131); 144 } 145 146 static void tc27x_initfn(Object *obj) 147 { 148 TriCoreCPU *cpu = TRICORE_CPU(obj); 149 150 set_feature(&cpu->env, TRICORE_FEATURE_161); 151 } 152 153 #include "hw/core/sysemu-cpu-ops.h" 154 155 static const struct SysemuCPUOps tricore_sysemu_ops = { 156 .get_phys_page_debug = tricore_cpu_get_phys_page_debug, 157 }; 158 159 #include "hw/core/tcg-cpu-ops.h" 160 161 static const struct TCGCPUOps tricore_tcg_ops = { 162 .initialize = tricore_tcg_init, 163 .synchronize_from_tb = tricore_cpu_synchronize_from_tb, 164 .tlb_fill = tricore_cpu_tlb_fill, 165 }; 166 167 static void tricore_cpu_class_init(ObjectClass *c, void *data) 168 { 169 TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c); 170 CPUClass *cc = CPU_CLASS(c); 171 DeviceClass *dc = DEVICE_CLASS(c); 172 173 device_class_set_parent_realize(dc, tricore_cpu_realizefn, 174 &mcc->parent_realize); 175 176 device_class_set_parent_reset(dc, tricore_cpu_reset, &mcc->parent_reset); 177 cc->class_by_name = tricore_cpu_class_by_name; 178 cc->has_work = tricore_cpu_has_work; 179 180 cc->gdb_read_register = tricore_cpu_gdb_read_register; 181 cc->gdb_write_register = tricore_cpu_gdb_write_register; 182 cc->gdb_num_core_regs = 44; 183 cc->gdb_arch_name = tricore_gdb_arch_name; 184 185 cc->dump_state = tricore_cpu_dump_state; 186 cc->set_pc = tricore_cpu_set_pc; 187 cc->get_pc = tricore_cpu_get_pc; 188 cc->sysemu_ops = &tricore_sysemu_ops; 189 cc->tcg_ops = &tricore_tcg_ops; 190 } 191 192 #define DEFINE_TRICORE_CPU_TYPE(cpu_model, initfn) \ 193 { \ 194 .parent = TYPE_TRICORE_CPU, \ 195 .instance_init = initfn, \ 196 .name = TRICORE_CPU_TYPE_NAME(cpu_model), \ 197 } 198 199 static const TypeInfo tricore_cpu_type_infos[] = { 200 { 201 .name = TYPE_TRICORE_CPU, 202 .parent = TYPE_CPU, 203 .instance_size = sizeof(TriCoreCPU), 204 .instance_init = tricore_cpu_initfn, 205 .abstract = true, 206 .class_size = sizeof(TriCoreCPUClass), 207 .class_init = tricore_cpu_class_init, 208 }, 209 DEFINE_TRICORE_CPU_TYPE("tc1796", tc1796_initfn), 210 DEFINE_TRICORE_CPU_TYPE("tc1797", tc1797_initfn), 211 DEFINE_TRICORE_CPU_TYPE("tc27x", tc27x_initfn), 212 }; 213 214 DEFINE_TYPES(tricore_cpu_type_infos) 215