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 "qapi/error.h"
  25
  26
  27 static void alpha_cpu_realize(Object *obj, Error **errp)
  28 {
  29     AlphaCPU *cpu = ALPHA_CPU(obj);
  30
  31     qemu_init_vcpu(&cpu->env);
  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) {
 100         return oc;
 101     }
 102
 103     for (i = 0; i < ARRAY_SIZE(alpha_cpu_aliases); i++) {
 104         if (strcmp(cpu_model, alpha_cpu_aliases[i].alias) == 0) {
 105             oc = object_class_by_name(alpha_cpu_aliases[i].typename);
 106             assert(oc != NULL);
 107             return oc;
 108         }
 109     }
 110
 111     typename = g_strdup_printf("%s-" TYPE_ALPHA_CPU, cpu_model);
 112     oc = object_class_by_name(typename);
 113     g_free(typename);
 114     return oc;
 115 }
 116
 117 AlphaCPU *cpu_alpha_init(const char *cpu_model)
 118 {
 119     AlphaCPU *cpu;
 120     CPUAlphaState *env;
 121     ObjectClass *cpu_class;
 122
 123     cpu_class = alpha_cpu_class_by_name(cpu_model);
 124     if (cpu_class == NULL) {
 125         /* Default to ev67; no reason not to emulate insns by default.  */
 126         cpu_class = object_class_by_name(TYPE("ev67"));
 127     }
 128     cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class)));
 129     env = &cpu->env;
 130
 131     env->cpu_model_str = cpu_model;
 132
 133     alpha_cpu_realize(OBJECT(cpu), NULL);
 134     return cpu;
 135 }
 136
 137 static void ev4_cpu_initfn(Object *obj)
 138 {
 139     AlphaCPU *cpu = ALPHA_CPU(obj);
 140     CPUAlphaState *env = &cpu->env;
 141
 142     env->implver = IMPLVER_2106x;
 143 }
 144
 145 static const TypeInfo ev4_cpu_type_info = {
 146     .name = TYPE("ev4"),
 147     .parent = TYPE_ALPHA_CPU,
 148     .instance_init = ev4_cpu_initfn,
 149 };
 150
 151 static void ev5_cpu_initfn(Object *obj)
 152 {
 153     AlphaCPU *cpu = ALPHA_CPU(obj);
 154     CPUAlphaState *env = &cpu->env;
 155
 156     env->implver = IMPLVER_21164;
 157 }
 158
 159 static const TypeInfo ev5_cpu_type_info = {
 160     .name = TYPE("ev5"),
 161     .parent = TYPE_ALPHA_CPU,
 162     .instance_init = ev5_cpu_initfn,
 163 };
 164
 165 static void ev56_cpu_initfn(Object *obj)
 166 {
 167     AlphaCPU *cpu = ALPHA_CPU(obj);
 168     CPUAlphaState *env = &cpu->env;
 169
 170     env->amask |= AMASK_BWX;
 171 }
 172
 173 static const TypeInfo ev56_cpu_type_info = {
 174     .name = TYPE("ev56"),
 175     .parent = TYPE("ev5"),
 176     .instance_init = ev56_cpu_initfn,
 177 };
 178
 179 static void pca56_cpu_initfn(Object *obj)
 180 {
 181     AlphaCPU *cpu = ALPHA_CPU(obj);
 182     CPUAlphaState *env = &cpu->env;
 183
 184     env->amask |= AMASK_MVI;
 185 }
 186
 187 static const TypeInfo pca56_cpu_type_info = {
 188     .name = TYPE("pca56"),
 189     .parent = TYPE("ev56"),
 190     .instance_init = pca56_cpu_initfn,
 191 };
 192
 193 static void ev6_cpu_initfn(Object *obj)
 194 {
 195     AlphaCPU *cpu = ALPHA_CPU(obj);
 196     CPUAlphaState *env = &cpu->env;
 197
 198     env->implver = IMPLVER_21264;
 199     env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;
 200 }
 201
 202 static const TypeInfo ev6_cpu_type_info = {
 203     .name = TYPE("ev6"),
 204     .parent = TYPE_ALPHA_CPU,
 205     .instance_init = ev6_cpu_initfn,
 206 };
 207
 208 static void ev67_cpu_initfn(Object *obj)
 209 {
 210     AlphaCPU *cpu = ALPHA_CPU(obj);
 211     CPUAlphaState *env = &cpu->env;
 212
 213     env->amask |= AMASK_CIX | AMASK_PREFETCH;
 214 }
 215
 216 static const TypeInfo ev67_cpu_type_info = {
 217     .name = TYPE("ev67"),
 218     .parent = TYPE("ev6"),
 219     .instance_init = ev67_cpu_initfn,
 220 };
 221
 222 static const TypeInfo ev68_cpu_type_info = {
 223     .name = TYPE("ev68"),
 224     .parent = TYPE("ev67"),
 225 };
 226
 227 static void alpha_cpu_initfn(Object *obj)
 228 {
 229     AlphaCPU *cpu = ALPHA_CPU(obj);
 230     CPUAlphaState *env = &cpu->env;
 231
 232     cpu_exec_init(env);
 233     tlb_flush(env, 1);
 234
 235     alpha_translate_init();
 236
 237 #if defined(CONFIG_USER_ONLY)
 238     env->ps = PS_USER_MODE;
 239     cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
 240                                | FPCR_UNFD | FPCR_INED | FPCR_DNOD
 241                                | FPCR_DYN_NORMAL));
 242 #endif
 243     env->lock_addr = -1;
 244     env->fen = 1;
 245 }
 246
 247 static const TypeInfo alpha_cpu_type_info = {
 248     .name = TYPE_ALPHA_CPU,
 249     .parent = TYPE_CPU,
 250     .instance_size = sizeof(AlphaCPU),
 251     .instance_init = alpha_cpu_initfn,
 252     .abstract = true,
 253     .class_size = sizeof(AlphaCPUClass),
 254 };
 255
 256 static void alpha_cpu_register_types(void)
 257 {
 258     type_register_static(&alpha_cpu_type_info);
 259     type_register_static(&ev4_cpu_type_info);
 260     type_register_static(&ev5_cpu_type_info);
 261     type_register_static(&ev56_cpu_type_info);
 262     type_register_static(&pca56_cpu_type_info);
 263     type_register_static(&ev6_cpu_type_info);
 264     type_register_static(&ev67_cpu_type_info);
 265     type_register_static(&ev68_cpu_type_info);
 266 }
 267
 268 type_init(alpha_cpu_register_types)