target-alpha/cpu.c

   1 /*
   2  * QEMU Alpha CPU
   3  *
   4  * Copyright (c) 2007 Jocelyn Mayer
   5  * Copyright (c) 2012 SUSE LINUX Products GmbH
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, see
  19  * <http://www.gnu.org/licenses/lgpl-2.1.html>
  20  */
  21
  22 #include "cpu.h"
  23 #include "qemu-common.h"
  24
  25
  26 static void alpha_cpu_realizefn(DeviceState *dev, Error **errp)
  27 {
  28     AlphaCPU *cpu = ALPHA_CPU(dev);
  29     AlphaCPUClass *acc = ALPHA_CPU_GET_CLASS(dev);
  30
  31     qemu_init_vcpu(&cpu->env);
  32
  33     acc->parent_realize(dev, errp);
  34 }
  35
  36 /* Sort alphabetically by type name. */
  37 static gint alpha_cpu_list_compare(gconstpointer a, gconstpointer b)
  38 {
  39     ObjectClass *class_a = (ObjectClass *)a;
  40     ObjectClass *class_b = (ObjectClass *)b;
  41     const char *name_a, *name_b;
  42
  43     name_a = object_class_get_name(class_a);
  44     name_b = object_class_get_name(class_b);
  45     return strcmp(name_a, name_b);
  46 }
  47
  48 static void alpha_cpu_list_entry(gpointer data, gpointer user_data)
  49 {
  50     ObjectClass *oc = data;
  51     CPUListState *s = user_data;
  52
  53     (*s->cpu_fprintf)(s->file, "  %s\n",
  54                       object_class_get_name(oc));
  55 }
  56
  57 void alpha_cpu_list(FILE *f, fprintf_function cpu_fprintf)
  58 {
  59     CPUListState s = {
  60         .file = f,
  61         .cpu_fprintf = cpu_fprintf,
  62     };
  63     GSList *list;
  64
  65     list = object_class_get_list(TYPE_ALPHA_CPU, false);
  66     list = g_slist_sort(list, alpha_cpu_list_compare);
  67     (*cpu_fprintf)(f, "Available CPUs:\n");
  68     g_slist_foreach(list, alpha_cpu_list_entry, &s);
  69     g_slist_free(list);
  70 }
  71
  72 /* Models */
  73
  74 #define TYPE(model) model "-" TYPE_ALPHA_CPU
  75
  76 typedef struct AlphaCPUAlias {
  77     const char *alias;
  78     const char *typename;
  79 } AlphaCPUAlias;
  80
  81 static const AlphaCPUAlias alpha_cpu_aliases[] = {
  82     { "21064",   TYPE("ev4") },
  83     { "21164",   TYPE("ev5") },
  84     { "21164a",  TYPE("ev56") },
  85     { "21164pc", TYPE("pca56") },
  86     { "21264",   TYPE("ev6") },
  87     { "21264a",  TYPE("ev67") },
  88 };
  89
  90 static ObjectClass *alpha_cpu_class_by_name(const char *cpu_model)
  91 {
  92     ObjectClass *oc = NULL;
  93     char *typename;
  94     int i;
  95
  96     if (cpu_model == NULL) {
  97         return NULL;
  98     }
  99
 100     oc = object_class_by_name(cpu_model);
 101     if (oc != NULL && object_class_dynamic_cast(oc, TYPE_ALPHA_CPU) != NULL &&
 102         !object_class_is_abstract(oc)) {
 103         return oc;
 104     }
 105
 106     for (i = 0; i < ARRAY_SIZE(alpha_cpu_aliases); i++) {
 107         if (strcmp(cpu_model, alpha_cpu_aliases[i].alias) == 0) {
 108             oc = object_class_by_name(alpha_cpu_aliases[i].typename);
 109             assert(oc != NULL && !object_class_is_abstract(oc));
 110             return oc;
 111         }
 112     }
 113
 114     typename = g_strdup_printf("%s-" TYPE_ALPHA_CPU, cpu_model);
 115     oc = object_class_by_name(typename);
 116     g_free(typename);
 117     if (oc != NULL && object_class_is_abstract(oc)) {
 118         oc = NULL;
 119     }
 120     return oc;
 121 }
 122
 123 AlphaCPU *cpu_alpha_init(const char *cpu_model)
 124 {
 125     AlphaCPU *cpu;
 126     CPUAlphaState *env;
 127     ObjectClass *cpu_class;
 128
 129     cpu_class = alpha_cpu_class_by_name(cpu_model);
 130     if (cpu_class == NULL) {
 131         /* Default to ev67; no reason not to emulate insns by default.  */
 132         cpu_class = object_class_by_name(TYPE("ev67"));
 133     }
 134     cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class)));
 135     env = &cpu->env;
 136
 137     env->cpu_model_str = cpu_model;
 138
 139     object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
 140
 141     return cpu;
 142 }
 143
 144 static void ev4_cpu_initfn(Object *obj)
 145 {
 146     AlphaCPU *cpu = ALPHA_CPU(obj);
 147     CPUAlphaState *env = &cpu->env;
 148
 149     env->implver = IMPLVER_2106x;
 150 }
 151
 152 static const TypeInfo ev4_cpu_type_info = {
 153     .name = TYPE("ev4"),
 154     .parent = TYPE_ALPHA_CPU,
 155     .instance_init = ev4_cpu_initfn,
 156 };
 157
 158 static void ev5_cpu_initfn(Object *obj)
 159 {
 160     AlphaCPU *cpu = ALPHA_CPU(obj);
 161     CPUAlphaState *env = &cpu->env;
 162
 163     env->implver = IMPLVER_21164;
 164 }
 165
 166 static const TypeInfo ev5_cpu_type_info = {
 167     .name = TYPE("ev5"),
 168     .parent = TYPE_ALPHA_CPU,
 169     .instance_init = ev5_cpu_initfn,
 170 };
 171
 172 static void ev56_cpu_initfn(Object *obj)
 173 {
 174     AlphaCPU *cpu = ALPHA_CPU(obj);
 175     CPUAlphaState *env = &cpu->env;
 176
 177     env->amask |= AMASK_BWX;
 178 }
 179
 180 static const TypeInfo ev56_cpu_type_info = {
 181     .name = TYPE("ev56"),
 182     .parent = TYPE("ev5"),
 183     .instance_init = ev56_cpu_initfn,
 184 };
 185
 186 static void pca56_cpu_initfn(Object *obj)
 187 {
 188     AlphaCPU *cpu = ALPHA_CPU(obj);
 189     CPUAlphaState *env = &cpu->env;
 190
 191     env->amask |= AMASK_MVI;
 192 }
 193
 194 static const TypeInfo pca56_cpu_type_info = {
 195     .name = TYPE("pca56"),
 196     .parent = TYPE("ev56"),
 197     .instance_init = pca56_cpu_initfn,
 198 };
 199
 200 static void ev6_cpu_initfn(Object *obj)
 201 {
 202     AlphaCPU *cpu = ALPHA_CPU(obj);
 203     CPUAlphaState *env = &cpu->env;
 204
 205     env->implver = IMPLVER_21264;
 206     env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;
 207 }
 208
 209 static const TypeInfo ev6_cpu_type_info = {
 210     .name = TYPE("ev6"),
 211     .parent = TYPE_ALPHA_CPU,
 212     .instance_init = ev6_cpu_initfn,
 213 };
 214
 215 static void ev67_cpu_initfn(Object *obj)
 216 {
 217     AlphaCPU *cpu = ALPHA_CPU(obj);
 218     CPUAlphaState *env = &cpu->env;
 219
 220     env->amask |= AMASK_CIX | AMASK_PREFETCH;
 221 }
 222
 223 static const TypeInfo ev67_cpu_type_info = {
 224     .name = TYPE("ev67"),
 225     .parent = TYPE("ev6"),
 226     .instance_init = ev67_cpu_initfn,
 227 };
 228
 229 static const TypeInfo ev68_cpu_type_info = {
 230     .name = TYPE("ev68"),
 231     .parent = TYPE("ev67"),
 232 };
 233
 234 static void alpha_cpu_initfn(Object *obj)
 235 {
 236     CPUState *cs = CPU(obj);
 237     AlphaCPU *cpu = ALPHA_CPU(obj);
 238     CPUAlphaState *env = &cpu->env;
 239
 240     cs->env_ptr = env;
 241     cpu_exec_init(env);
 242     tlb_flush(env, 1);
 243
 244     alpha_translate_init();
 245
 246 #if defined(CONFIG_USER_ONLY)
 247     env->ps = PS_USER_MODE;
 248     cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
 249                                | FPCR_UNFD | FPCR_INED | FPCR_DNOD
 250                                | FPCR_DYN_NORMAL));
 251 #endif
 252     env->lock_addr = -1;
 253     env->fen = 1;
 254 }
 255
 256 static void alpha_cpu_class_init(ObjectClass *oc, void *data)
 257 {
 258     DeviceClass *dc = DEVICE_CLASS(oc);
 259     CPUClass *cc = CPU_CLASS(oc);
 260     AlphaCPUClass *acc = ALPHA_CPU_CLASS(oc);
 261
 262     acc->parent_realize = dc->realize;
 263     dc->realize = alpha_cpu_realizefn;
 264
 265     cc->class_by_name = alpha_cpu_class_by_name;
 266     cc->do_interrupt = alpha_cpu_do_interrupt;
 267 }
 268
 269 static const TypeInfo alpha_cpu_type_info = {
 270     .name = TYPE_ALPHA_CPU,
 271     .parent = TYPE_CPU,
 272     .instance_size = sizeof(AlphaCPU),
 273     .instance_init = alpha_cpu_initfn,
 274     .abstract = true,
 275     .class_size = sizeof(AlphaCPUClass),
 276     .class_init = alpha_cpu_class_init,
 277 };
 278
 279 static void alpha_cpu_register_types(void)
 280 {
 281     type_register_static(&alpha_cpu_type_info);
 282     type_register_static(&ev4_cpu_type_info);
 283     type_register_static(&ev5_cpu_type_info);
 284     type_register_static(&ev56_cpu_type_info);
 285     type_register_static(&pca56_cpu_type_info);
 286     type_register_static(&ev6_cpu_type_info);
 287     type_register_static(&ev67_cpu_type_info);
 288     type_register_static(&ev68_cpu_type_info);
 289 }
 290
 291 type_init(alpha_cpu_register_types)