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 "error.h"
  25
  26
  27 static void alpha_cpu_realize(Object *obj, Error **errp)
  28 {
  29 #ifndef CONFIG_USER_ONLY
  30     AlphaCPU *cpu = ALPHA_CPU(obj);
  31
  32     qemu_init_vcpu(&cpu->env);
  33 #endif
  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) {
 102         return oc;
 103     }
 104
 105     for (i = 0; i < ARRAY_SIZE(alpha_cpu_aliases); i++) {
 106         if (strcmp(cpu_model, alpha_cpu_aliases[i].alias) == 0) {
 107             oc = object_class_by_name(alpha_cpu_aliases[i].typename);
 108             assert(oc != NULL);
 109             return oc;
 110         }
 111     }
 112
 113     typename = g_strdup_printf("%s-" TYPE_ALPHA_CPU, cpu_model);
 114     oc = object_class_by_name(typename);
 115     g_free(typename);
 116     return oc;
 117 }
 118
 119 AlphaCPU *cpu_alpha_init(const char *cpu_model)
 120 {
 121     AlphaCPU *cpu;
 122     CPUAlphaState *env;
 123     ObjectClass *cpu_class;
 124
 125     cpu_class = alpha_cpu_class_by_name(cpu_model);
 126     if (cpu_class == NULL) {
 127         /* Default to ev67; no reason not to emulate insns by default.  */
 128         cpu_class = object_class_by_name(TYPE("ev67"));
 129     }
 130     cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class)));
 131     env = &cpu->env;
 132
 133     env->cpu_model_str = cpu_model;
 134
 135     alpha_cpu_realize(OBJECT(cpu), NULL);
 136     return cpu;
 137 }
 138
 139 static void ev4_cpu_initfn(Object *obj)
 140 {
 141     AlphaCPU *cpu = ALPHA_CPU(obj);
 142     CPUAlphaState *env = &cpu->env;
 143
 144     env->implver = IMPLVER_2106x;
 145 }
 146
 147 static const TypeInfo ev4_cpu_type_info = {
 148     .name = TYPE("ev4"),
 149     .parent = TYPE_ALPHA_CPU,
 150     .instance_init = ev4_cpu_initfn,
 151 };
 152
 153 static void ev5_cpu_initfn(Object *obj)
 154 {
 155     AlphaCPU *cpu = ALPHA_CPU(obj);
 156     CPUAlphaState *env = &cpu->env;
 157
 158     env->implver = IMPLVER_21164;
 159 }
 160
 161 static const TypeInfo ev5_cpu_type_info = {
 162     .name = TYPE("ev5"),
 163     .parent = TYPE_ALPHA_CPU,
 164     .instance_init = ev5_cpu_initfn,
 165 };
 166
 167 static void ev56_cpu_initfn(Object *obj)
 168 {
 169     AlphaCPU *cpu = ALPHA_CPU(obj);
 170     CPUAlphaState *env = &cpu->env;
 171
 172     env->amask |= AMASK_BWX;
 173 }
 174
 175 static const TypeInfo ev56_cpu_type_info = {
 176     .name = TYPE("ev56"),
 177     .parent = TYPE("ev5"),
 178     .instance_init = ev56_cpu_initfn,
 179 };
 180
 181 static void pca56_cpu_initfn(Object *obj)
 182 {
 183     AlphaCPU *cpu = ALPHA_CPU(obj);
 184     CPUAlphaState *env = &cpu->env;
 185
 186     env->amask |= AMASK_MVI;
 187 }
 188
 189 static const TypeInfo pca56_cpu_type_info = {
 190     .name = TYPE("pca56"),
 191     .parent = TYPE("ev56"),
 192     .instance_init = pca56_cpu_initfn,
 193 };
 194
 195 static void ev6_cpu_initfn(Object *obj)
 196 {
 197     AlphaCPU *cpu = ALPHA_CPU(obj);
 198     CPUAlphaState *env = &cpu->env;
 199
 200     env->implver = IMPLVER_21264;
 201     env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;
 202 }
 203
 204 static const TypeInfo ev6_cpu_type_info = {
 205     .name = TYPE("ev6"),
 206     .parent = TYPE_ALPHA_CPU,
 207     .instance_init = ev6_cpu_initfn,
 208 };
 209
 210 static void ev67_cpu_initfn(Object *obj)
 211 {
 212     AlphaCPU *cpu = ALPHA_CPU(obj);
 213     CPUAlphaState *env = &cpu->env;
 214
 215     env->amask |= AMASK_CIX | AMASK_PREFETCH;
 216 }
 217
 218 static const TypeInfo ev67_cpu_type_info = {
 219     .name = TYPE("ev67"),
 220     .parent = TYPE("ev6"),
 221     .instance_init = ev67_cpu_initfn,
 222 };
 223
 224 static const TypeInfo ev68_cpu_type_info = {
 225     .name = TYPE("ev68"),
 226     .parent = TYPE("ev67"),
 227 };
 228
 229 static void alpha_cpu_initfn(Object *obj)
 230 {
 231     AlphaCPU *cpu = ALPHA_CPU(obj);
 232     CPUAlphaState *env = &cpu->env;
 233
 234     cpu_exec_init(env);
 235     tlb_flush(env, 1);
 236
 237     alpha_translate_init();
 238
 239 #if defined(CONFIG_USER_ONLY)
 240     env->ps = PS_USER_MODE;
 241     cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
 242                                | FPCR_UNFD | FPCR_INED | FPCR_DNOD
 243                                | FPCR_DYN_NORMAL));
 244 #endif
 245     env->lock_addr = -1;
 246     env->fen = 1;
 247 }
 248
 249 static const TypeInfo alpha_cpu_type_info = {
 250     .name = TYPE_ALPHA_CPU,
 251     .parent = TYPE_CPU,
 252     .instance_size = sizeof(AlphaCPU),
 253     .instance_init = alpha_cpu_initfn,
 254     .abstract = true,
 255     .class_size = sizeof(AlphaCPUClass),
 256 };
 257
 258 static void alpha_cpu_register_types(void)
 259 {
 260     type_register_static(&alpha_cpu_type_info);
 261     type_register_static(&ev4_cpu_type_info);
 262     type_register_static(&ev5_cpu_type_info);
 263     type_register_static(&ev56_cpu_type_info);
 264     type_register_static(&pca56_cpu_type_info);
 265     type_register_static(&ev6_cpu_type_info);
 266     type_register_static(&ev67_cpu_type_info);
 267     type_register_static(&ev68_cpu_type_info);
 268 }
 269
 270 type_init(alpha_cpu_register_types)