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