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 && 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     alpha_cpu_realize(OBJECT(cpu), NULL);
 138     return cpu;
 139 }
 140
 141 static void ev4_cpu_initfn(Object *obj)
 142 {
 143     AlphaCPU *cpu = ALPHA_CPU(obj);
 144     CPUAlphaState *env = &cpu->env;
 145
 146     env->implver = IMPLVER_2106x;
 147 }
 148
 149 static const TypeInfo ev4_cpu_type_info = {
 150     .name = TYPE("ev4"),
 151     .parent = TYPE_ALPHA_CPU,
 152     .instance_init = ev4_cpu_initfn,
 153 };
 154
 155 static void ev5_cpu_initfn(Object *obj)
 156 {
 157     AlphaCPU *cpu = ALPHA_CPU(obj);
 158     CPUAlphaState *env = &cpu->env;
 159
 160     env->implver = IMPLVER_21164;
 161 }
 162
 163 static const TypeInfo ev5_cpu_type_info = {
 164     .name = TYPE("ev5"),
 165     .parent = TYPE_ALPHA_CPU,
 166     .instance_init = ev5_cpu_initfn,
 167 };
 168
 169 static void ev56_cpu_initfn(Object *obj)
 170 {
 171     AlphaCPU *cpu = ALPHA_CPU(obj);
 172     CPUAlphaState *env = &cpu->env;
 173
 174     env->amask |= AMASK_BWX;
 175 }
 176
 177 static const TypeInfo ev56_cpu_type_info = {
 178     .name = TYPE("ev56"),
 179     .parent = TYPE("ev5"),
 180     .instance_init = ev56_cpu_initfn,
 181 };
 182
 183 static void pca56_cpu_initfn(Object *obj)
 184 {
 185     AlphaCPU *cpu = ALPHA_CPU(obj);
 186     CPUAlphaState *env = &cpu->env;
 187
 188     env->amask |= AMASK_MVI;
 189 }
 190
 191 static const TypeInfo pca56_cpu_type_info = {
 192     .name = TYPE("pca56"),
 193     .parent = TYPE("ev56"),
 194     .instance_init = pca56_cpu_initfn,
 195 };
 196
 197 static void ev6_cpu_initfn(Object *obj)
 198 {
 199     AlphaCPU *cpu = ALPHA_CPU(obj);
 200     CPUAlphaState *env = &cpu->env;
 201
 202     env->implver = IMPLVER_21264;
 203     env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;
 204 }
 205
 206 static const TypeInfo ev6_cpu_type_info = {
 207     .name = TYPE("ev6"),
 208     .parent = TYPE_ALPHA_CPU,
 209     .instance_init = ev6_cpu_initfn,
 210 };
 211
 212 static void ev67_cpu_initfn(Object *obj)
 213 {
 214     AlphaCPU *cpu = ALPHA_CPU(obj);
 215     CPUAlphaState *env = &cpu->env;
 216
 217     env->amask |= AMASK_CIX | AMASK_PREFETCH;
 218 }
 219
 220 static const TypeInfo ev67_cpu_type_info = {
 221     .name = TYPE("ev67"),
 222     .parent = TYPE("ev6"),
 223     .instance_init = ev67_cpu_initfn,
 224 };
 225
 226 static const TypeInfo ev68_cpu_type_info = {
 227     .name = TYPE("ev68"),
 228     .parent = TYPE("ev67"),
 229 };
 230
 231 static void alpha_cpu_initfn(Object *obj)
 232 {
 233     AlphaCPU *cpu = ALPHA_CPU(obj);
 234     CPUAlphaState *env = &cpu->env;
 235
 236     cpu_exec_init(env);
 237     tlb_flush(env, 1);
 238
 239     alpha_translate_init();
 240
 241 #if defined(CONFIG_USER_ONLY)
 242     env->ps = PS_USER_MODE;
 243     cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
 244                                | FPCR_UNFD | FPCR_INED | FPCR_DNOD
 245                                | FPCR_DYN_NORMAL));
 246 #endif
 247     env->lock_addr = -1;
 248     env->fen = 1;
 249 }
 250
 251 static void alpha_cpu_class_init(ObjectClass *oc, void *data)
 252 {
 253     CPUClass *cc = CPU_CLASS(oc);
 254
 255     cc->class_by_name = alpha_cpu_class_by_name;
 256 }
 257
 258 static const TypeInfo alpha_cpu_type_info = {
 259     .name = TYPE_ALPHA_CPU,
 260     .parent = TYPE_CPU,
 261     .instance_size = sizeof(AlphaCPU),
 262     .instance_init = alpha_cpu_initfn,
 263     .abstract = true,
 264     .class_size = sizeof(AlphaCPUClass),
 265     .class_init = alpha_cpu_class_init,
 266 };
 267
 268 static void alpha_cpu_register_types(void)
 269 {
 270     type_register_static(&alpha_cpu_type_info);
 271     type_register_static(&ev4_cpu_type_info);
 272     type_register_static(&ev5_cpu_type_info);
 273     type_register_static(&ev56_cpu_type_info);
 274     type_register_static(&pca56_cpu_type_info);
 275     type_register_static(&ev6_cpu_type_info);
 276     type_register_static(&ev67_cpu_type_info);
 277     type_register_static(&ev68_cpu_type_info);
 278 }
 279
 280 type_init(alpha_cpu_register_types)