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 #include "migration/vmstate.h"
  25
  26
  27 static void alpha_cpu_realizefn(DeviceState *dev, Error **errp)
  28 {
  29     AlphaCPUClass *acc = ALPHA_CPU_GET_CLASS(dev);
  30
  31     acc->parent_realize(dev, errp);
  32 }
  33
  34 /* Sort alphabetically by type name. */
  35 static gint alpha_cpu_list_compare(gconstpointer a, gconstpointer b)
  36 {
  37     ObjectClass *class_a = (ObjectClass *)a;
  38     ObjectClass *class_b = (ObjectClass *)b;
  39     const char *name_a, *name_b;
  40
  41     name_a = object_class_get_name(class_a);
  42     name_b = object_class_get_name(class_b);
  43     return strcmp(name_a, name_b);
  44 }
  45
  46 static void alpha_cpu_list_entry(gpointer data, gpointer user_data)
  47 {
  48     ObjectClass *oc = data;
  49     CPUListState *s = user_data;
  50
  51     (*s->cpu_fprintf)(s->file, "  %s\n",
  52                       object_class_get_name(oc));
  53 }
  54
  55 void alpha_cpu_list(FILE *f, fprintf_function cpu_fprintf)
  56 {
  57     CPUListState s = {
  58         .file = f,
  59         .cpu_fprintf = cpu_fprintf,
  60     };
  61     GSList *list;
  62
  63     list = object_class_get_list(TYPE_ALPHA_CPU, false);
  64     list = g_slist_sort(list, alpha_cpu_list_compare);
  65     (*cpu_fprintf)(f, "Available CPUs:\n");
  66     g_slist_foreach(list, alpha_cpu_list_entry, &s);
  67     g_slist_free(list);
  68 }
  69
  70 /* Models */
  71
  72 #define TYPE(model) model "-" TYPE_ALPHA_CPU
  73
  74 typedef struct AlphaCPUAlias {
  75     const char *alias;
  76     const char *typename;
  77 } AlphaCPUAlias;
  78
  79 static const AlphaCPUAlias alpha_cpu_aliases[] = {
  80     { "21064",   TYPE("ev4") },
  81     { "21164",   TYPE("ev5") },
  82     { "21164a",  TYPE("ev56") },
  83     { "21164pc", TYPE("pca56") },
  84     { "21264",   TYPE("ev6") },
  85     { "21264a",  TYPE("ev67") },
  86 };
  87
  88 static ObjectClass *alpha_cpu_class_by_name(const char *cpu_model)
  89 {
  90     ObjectClass *oc = NULL;
  91     char *typename;
  92     int i;
  93
  94     if (cpu_model == NULL) {
  95         return NULL;
  96     }
  97
  98     oc = object_class_by_name(cpu_model);
  99     if (oc != NULL && object_class_dynamic_cast(oc, TYPE_ALPHA_CPU) != NULL &&
 100         !object_class_is_abstract(oc)) {
 101         return oc;
 102     }
 103
 104     for (i = 0; i < ARRAY_SIZE(alpha_cpu_aliases); i++) {
 105         if (strcmp(cpu_model, alpha_cpu_aliases[i].alias) == 0) {
 106             oc = object_class_by_name(alpha_cpu_aliases[i].typename);
 107             assert(oc != NULL && !object_class_is_abstract(oc));
 108             return oc;
 109         }
 110     }
 111
 112     typename = g_strdup_printf("%s-" TYPE_ALPHA_CPU, cpu_model);
 113     oc = object_class_by_name(typename);
 114     g_free(typename);
 115     if (oc != NULL && object_class_is_abstract(oc)) {
 116         oc = NULL;
 117     }
 118     return oc;
 119 }
 120
 121 AlphaCPU *cpu_alpha_init(const char *cpu_model)
 122 {
 123     AlphaCPU *cpu;
 124     CPUAlphaState *env;
 125     ObjectClass *cpu_class;
 126
 127     cpu_class = alpha_cpu_class_by_name(cpu_model);
 128     if (cpu_class == NULL) {
 129         /* Default to ev67; no reason not to emulate insns by default.  */
 130         cpu_class = object_class_by_name(TYPE("ev67"));
 131     }
 132     cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class)));
 133     env = &cpu->env;
 134
 135     env->cpu_model_str = cpu_model;
 136
 137     object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
 138
 139     return cpu;
 140 }
 141
 142 static void ev4_cpu_initfn(Object *obj)
 143 {
 144     AlphaCPU *cpu = ALPHA_CPU(obj);
 145     CPUAlphaState *env = &cpu->env;
 146
 147     env->implver = IMPLVER_2106x;
 148 }
 149
 150 static const TypeInfo ev4_cpu_type_info = {
 151     .name = TYPE("ev4"),
 152     .parent = TYPE_ALPHA_CPU,
 153     .instance_init = ev4_cpu_initfn,
 154 };
 155
 156 static void ev5_cpu_initfn(Object *obj)
 157 {
 158     AlphaCPU *cpu = ALPHA_CPU(obj);
 159     CPUAlphaState *env = &cpu->env;
 160
 161     env->implver = IMPLVER_21164;
 162 }
 163
 164 static const TypeInfo ev5_cpu_type_info = {
 165     .name = TYPE("ev5"),
 166     .parent = TYPE_ALPHA_CPU,
 167     .instance_init = ev5_cpu_initfn,
 168 };
 169
 170 static void ev56_cpu_initfn(Object *obj)
 171 {
 172     AlphaCPU *cpu = ALPHA_CPU(obj);
 173     CPUAlphaState *env = &cpu->env;
 174
 175     env->amask |= AMASK_BWX;
 176 }
 177
 178 static const TypeInfo ev56_cpu_type_info = {
 179     .name = TYPE("ev56"),
 180     .parent = TYPE("ev5"),
 181     .instance_init = ev56_cpu_initfn,
 182 };
 183
 184 static void pca56_cpu_initfn(Object *obj)
 185 {
 186     AlphaCPU *cpu = ALPHA_CPU(obj);
 187     CPUAlphaState *env = &cpu->env;
 188
 189     env->amask |= AMASK_MVI;
 190 }
 191
 192 static const TypeInfo pca56_cpu_type_info = {
 193     .name = TYPE("pca56"),
 194     .parent = TYPE("ev56"),
 195     .instance_init = pca56_cpu_initfn,
 196 };
 197
 198 static void ev6_cpu_initfn(Object *obj)
 199 {
 200     AlphaCPU *cpu = ALPHA_CPU(obj);
 201     CPUAlphaState *env = &cpu->env;
 202
 203     env->implver = IMPLVER_21264;
 204     env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;
 205 }
 206
 207 static const TypeInfo ev6_cpu_type_info = {
 208     .name = TYPE("ev6"),
 209     .parent = TYPE_ALPHA_CPU,
 210     .instance_init = ev6_cpu_initfn,
 211 };
 212
 213 static void ev67_cpu_initfn(Object *obj)
 214 {
 215     AlphaCPU *cpu = ALPHA_CPU(obj);
 216     CPUAlphaState *env = &cpu->env;
 217
 218     env->amask |= AMASK_CIX | AMASK_PREFETCH;
 219 }
 220
 221 static const TypeInfo ev67_cpu_type_info = {
 222     .name = TYPE("ev67"),
 223     .parent = TYPE("ev6"),
 224     .instance_init = ev67_cpu_initfn,
 225 };
 226
 227 static const TypeInfo ev68_cpu_type_info = {
 228     .name = TYPE("ev68"),
 229     .parent = TYPE("ev67"),
 230 };
 231
 232 static void alpha_cpu_initfn(Object *obj)
 233 {
 234     CPUState *cs = CPU(obj);
 235     AlphaCPU *cpu = ALPHA_CPU(obj);
 236     CPUAlphaState *env = &cpu->env;
 237
 238     cs->env_ptr = env;
 239     cpu_exec_init(env);
 240     tlb_flush(env, 1);
 241
 242     alpha_translate_init();
 243
 244 #if defined(CONFIG_USER_ONLY)
 245     env->ps = PS_USER_MODE;
 246     cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
 247                                | FPCR_UNFD | FPCR_INED | FPCR_DNOD
 248                                | FPCR_DYN_NORMAL));
 249 #endif
 250     env->lock_addr = -1;
 251     env->fen = 1;
 252 }
 253
 254 static void alpha_cpu_class_init(ObjectClass *oc, void *data)
 255 {
 256     DeviceClass *dc = DEVICE_CLASS(oc);
 257     CPUClass *cc = CPU_CLASS(oc);
 258     AlphaCPUClass *acc = ALPHA_CPU_CLASS(oc);
 259
 260     acc->parent_realize = dc->realize;
 261     dc->realize = alpha_cpu_realizefn;
 262
 263     cc->class_by_name = alpha_cpu_class_by_name;
 264     cc->do_interrupt = alpha_cpu_do_interrupt;
 265     cc->dump_state = alpha_cpu_dump_state;
 266     cpu_class_set_do_unassigned_access(cc, alpha_cpu_unassigned_access);
 267     device_class_set_vmsd(dc, &vmstate_alpha_cpu);
 268 }
 269
 270 static const TypeInfo alpha_cpu_type_info = {
 271     .name = TYPE_ALPHA_CPU,
 272     .parent = TYPE_CPU,
 273     .instance_size = sizeof(AlphaCPU),
 274     .instance_init = alpha_cpu_initfn,
 275     .abstract = true,
 276     .class_size = sizeof(AlphaCPUClass),
 277     .class_init = alpha_cpu_class_init,
 278 };
 279
 280 static void alpha_cpu_register_types(void)
 281 {
 282     type_register_static(&alpha_cpu_type_info);
 283     type_register_static(&ev4_cpu_type_info);
 284     type_register_static(&ev5_cpu_type_info);
 285     type_register_static(&ev56_cpu_type_info);
 286     type_register_static(&pca56_cpu_type_info);
 287     type_register_static(&ev6_cpu_type_info);
 288     type_register_static(&ev67_cpu_type_info);
 289     type_register_static(&ev68_cpu_type_info);
 290 }
 291
 292 type_init(alpha_cpu_register_types)