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 tcg_debug_assert(!(cs->tcg_cflags & CF_PCREL)); 59 env->PC = tb->pc; 60 } 61 62 static void tricore_restore_state_to_opc(CPUState *cs, 63 const TranslationBlock *tb, 64 const uint64_t *data) 65 { 66 TriCoreCPU *cpu = TRICORE_CPU(cs); 67 CPUTriCoreState *env = &cpu->env; 68 69 env->PC = data[0]; 70 } 71 72 static void tricore_cpu_reset_hold(Object *obj) 73 { 74 CPUState *s = CPU(obj); 75 TriCoreCPU *cpu = TRICORE_CPU(s); 76 TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu); 77 CPUTriCoreState *env = &cpu->env; 78 79 if (tcc->parent_phases.hold) { 80 tcc->parent_phases.hold(obj); 81 } 82 83 cpu_state_reset(env); 84 } 85 86 static bool tricore_cpu_has_work(CPUState *cs) 87 { 88 return true; 89 } 90 91 static void tricore_cpu_realizefn(DeviceState *dev, Error **errp) 92 { 93 CPUState *cs = CPU(dev); 94 TriCoreCPU *cpu = TRICORE_CPU(dev); 95 TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev); 96 CPUTriCoreState *env = &cpu->env; 97 Error *local_err = NULL; 98 99 cpu_exec_realizefn(cs, &local_err); 100 if (local_err != NULL) { 101 error_propagate(errp, local_err); 102 return; 103 } 104 105 /* Some features automatically imply others */ 106 if (tricore_feature(env, TRICORE_FEATURE_161)) { 107 set_feature(env, TRICORE_FEATURE_16); 108 } 109 110 if (tricore_feature(env, TRICORE_FEATURE_16)) { 111 set_feature(env, TRICORE_FEATURE_131); 112 } 113 if (tricore_feature(env, TRICORE_FEATURE_131)) { 114 set_feature(env, TRICORE_FEATURE_13); 115 } 116 cpu_reset(cs); 117 qemu_init_vcpu(cs); 118 119 tcc->parent_realize(dev, errp); 120 } 121 122 123 static void tricore_cpu_initfn(Object *obj) 124 { 125 TriCoreCPU *cpu = TRICORE_CPU(obj); 126 127 cpu_set_cpustate_pointers(cpu); 128 } 129 130 static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model) 131 { 132 ObjectClass *oc; 133 char *typename; 134 135 typename = g_strdup_printf(TRICORE_CPU_TYPE_NAME("%s"), cpu_model); 136 oc = object_class_by_name(typename); 137 g_free(typename); 138 if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) || 139 object_class_is_abstract(oc)) { 140 return NULL; 141 } 142 return oc; 143 } 144 145 static void tc1796_initfn(Object *obj) 146 { 147 TriCoreCPU *cpu = TRICORE_CPU(obj); 148 149 set_feature(&cpu->env, TRICORE_FEATURE_13); 150 } 151 152 static void tc1797_initfn(Object *obj) 153 { 154 TriCoreCPU *cpu = TRICORE_CPU(obj); 155 156 set_feature(&cpu->env, TRICORE_FEATURE_131); 157 } 158 159 static void tc27x_initfn(Object *obj) 160 { 161 TriCoreCPU *cpu = TRICORE_CPU(obj); 162 163 set_feature(&cpu->env, TRICORE_FEATURE_161); 164 } 165 166 #include "hw/core/sysemu-cpu-ops.h" 167 168 static const struct SysemuCPUOps tricore_sysemu_ops = { 169 .get_phys_page_debug = tricore_cpu_get_phys_page_debug, 170 }; 171 172 #include "hw/core/tcg-cpu-ops.h" 173 174 static const struct TCGCPUOps tricore_tcg_ops = { 175 .initialize = tricore_tcg_init, 176 .synchronize_from_tb = tricore_cpu_synchronize_from_tb, 177 .restore_state_to_opc = tricore_restore_state_to_opc, 178 .tlb_fill = tricore_cpu_tlb_fill, 179 }; 180 181 static void tricore_cpu_class_init(ObjectClass *c, void *data) 182 { 183 TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c); 184 CPUClass *cc = CPU_CLASS(c); 185 DeviceClass *dc = DEVICE_CLASS(c); 186 ResettableClass *rc = RESETTABLE_CLASS(c); 187 188 device_class_set_parent_realize(dc, tricore_cpu_realizefn, 189 &mcc->parent_realize); 190 191 resettable_class_set_parent_phases(rc, NULL, tricore_cpu_reset_hold, NULL, 192 &mcc->parent_phases); 193 cc->class_by_name = tricore_cpu_class_by_name; 194 cc->has_work = tricore_cpu_has_work; 195 196 cc->gdb_read_register = tricore_cpu_gdb_read_register; 197 cc->gdb_write_register = tricore_cpu_gdb_write_register; 198 cc->gdb_num_core_regs = 44; 199 cc->gdb_arch_name = tricore_gdb_arch_name; 200 201 cc->dump_state = tricore_cpu_dump_state; 202 cc->set_pc = tricore_cpu_set_pc; 203 cc->get_pc = tricore_cpu_get_pc; 204 cc->sysemu_ops = &tricore_sysemu_ops; 205 cc->tcg_ops = &tricore_tcg_ops; 206 } 207 208 #define DEFINE_TRICORE_CPU_TYPE(cpu_model, initfn) \ 209 { \ 210 .parent = TYPE_TRICORE_CPU, \ 211 .instance_init = initfn, \ 212 .name = TRICORE_CPU_TYPE_NAME(cpu_model), \ 213 } 214 215 static const TypeInfo tricore_cpu_type_infos[] = { 216 { 217 .name = TYPE_TRICORE_CPU, 218 .parent = TYPE_CPU, 219 .instance_size = sizeof(TriCoreCPU), 220 .instance_init = tricore_cpu_initfn, 221 .abstract = true, 222 .class_size = sizeof(TriCoreCPUClass), 223 .class_init = tricore_cpu_class_init, 224 }, 225 DEFINE_TRICORE_CPU_TYPE("tc1796", tc1796_initfn), 226 DEFINE_TRICORE_CPU_TYPE("tc1797", tc1797_initfn), 227 DEFINE_TRICORE_CPU_TYPE("tc27x", tc27x_initfn), 228 }; 229 230 DEFINE_TYPES(tricore_cpu_type_infos) 231