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