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_set_pc(CPUState *cs, vaddr value)
  28 {
  29     AlphaCPU *cpu = ALPHA_CPU(cs);
  30
  31     cpu->env.pc = value;
  32 }
  33
  34 static void alpha_cpu_realizefn(DeviceState *dev, Error **errp)
  35 {
  36     CPUState *cs = CPU(dev);
  37     AlphaCPUClass *acc = ALPHA_CPU_GET_CLASS(dev);
  38
  39     qemu_init_vcpu(cs);
  40
  41     acc->parent_realize(dev, errp);
  42 }
  43
  44 /* Sort alphabetically by type name. */
  45 static gint alpha_cpu_list_compare(gconstpointer a, gconstpointer b)
  46 {
  47     ObjectClass *class_a = (ObjectClass *)a;
  48     ObjectClass *class_b = (ObjectClass *)b;
  49     const char *name_a, *name_b;
  50
  51     name_a = object_class_get_name(class_a);
  52     name_b = object_class_get_name(class_b);
  53     return strcmp(name_a, name_b);
  54 }
  55
  56 static void alpha_cpu_list_entry(gpointer data, gpointer user_data)
  57 {
  58     ObjectClass *oc = data;
  59     CPUListState *s = user_data;
  60
  61     (*s->cpu_fprintf)(s->file, "  %s\n",
  62                       object_class_get_name(oc));
  63 }
  64
  65 void alpha_cpu_list(FILE *f, fprintf_function cpu_fprintf)
  66 {
  67     CPUListState s = {
  68         .file = f,
  69         .cpu_fprintf = cpu_fprintf,
  70     };
  71     GSList *list;
  72
  73     list = object_class_get_list(TYPE_ALPHA_CPU, false);
  74     list = g_slist_sort(list, alpha_cpu_list_compare);
  75     (*cpu_fprintf)(f, "Available CPUs:\n");
  76     g_slist_foreach(list, alpha_cpu_list_entry, &s);
  77     g_slist_free(list);
  78 }
  79
  80 /* Models */
  81
  82 #define TYPE(model) model "-" TYPE_ALPHA_CPU
  83
  84 typedef struct AlphaCPUAlias {
  85     const char *alias;
  86     const char *typename;
  87 } AlphaCPUAlias;
  88
  89 static const AlphaCPUAlias alpha_cpu_aliases[] = {
  90     { "21064",   TYPE("ev4") },
  91     { "21164",   TYPE("ev5") },
  92     { "21164a",  TYPE("ev56") },
  93     { "21164pc", TYPE("pca56") },
  94     { "21264",   TYPE("ev6") },
  95     { "21264a",  TYPE("ev67") },
  96 };
  97
  98 static ObjectClass *alpha_cpu_class_by_name(const char *cpu_model)
  99 {
 100     ObjectClass *oc = NULL;
 101     char *typename;
 102     int i;
 103
 104     if (cpu_model == NULL) {
 105         return NULL;
 106     }
 107
 108     oc = object_class_by_name(cpu_model);
 109     if (oc != NULL && object_class_dynamic_cast(oc, TYPE_ALPHA_CPU) != NULL &&
 110         !object_class_is_abstract(oc)) {
 111         return oc;
 112     }
 113
 114     for (i = 0; i < ARRAY_SIZE(alpha_cpu_aliases); i++) {
 115         if (strcmp(cpu_model, alpha_cpu_aliases[i].alias) == 0) {
 116             oc = object_class_by_name(alpha_cpu_aliases[i].typename);
 117             assert(oc != NULL && !object_class_is_abstract(oc));
 118             return oc;
 119         }
 120     }
 121
 122     typename = g_strdup_printf("%s-" TYPE_ALPHA_CPU, cpu_model);
 123     oc = object_class_by_name(typename);
 124     g_free(typename);
 125     if (oc != NULL && object_class_is_abstract(oc)) {
 126         oc = NULL;
 127     }
 128     return oc;
 129 }
 130
 131 AlphaCPU *cpu_alpha_init(const char *cpu_model)
 132 {
 133     AlphaCPU *cpu;
 134     CPUAlphaState *env;
 135     ObjectClass *cpu_class;
 136
 137     cpu_class = alpha_cpu_class_by_name(cpu_model);
 138     if (cpu_class == NULL) {
 139         /* Default to ev67; no reason not to emulate insns by default.  */
 140         cpu_class = object_class_by_name(TYPE("ev67"));
 141     }
 142     cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class)));
 143     env = &cpu->env;
 144
 145     env->cpu_model_str = cpu_model;
 146
 147     object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
 148
 149     return cpu;
 150 }
 151
 152 static void ev4_cpu_initfn(Object *obj)
 153 {
 154     AlphaCPU *cpu = ALPHA_CPU(obj);
 155     CPUAlphaState *env = &cpu->env;
 156
 157     env->implver = IMPLVER_2106x;
 158 }
 159
 160 static const TypeInfo ev4_cpu_type_info = {
 161     .name = TYPE("ev4"),
 162     .parent = TYPE_ALPHA_CPU,
 163     .instance_init = ev4_cpu_initfn,
 164 };
 165
 166 static void ev5_cpu_initfn(Object *obj)
 167 {
 168     AlphaCPU *cpu = ALPHA_CPU(obj);
 169     CPUAlphaState *env = &cpu->env;
 170
 171     env->implver = IMPLVER_21164;
 172 }
 173
 174 static const TypeInfo ev5_cpu_type_info = {
 175     .name = TYPE("ev5"),
 176     .parent = TYPE_ALPHA_CPU,
 177     .instance_init = ev5_cpu_initfn,
 178 };
 179
 180 static void ev56_cpu_initfn(Object *obj)
 181 {
 182     AlphaCPU *cpu = ALPHA_CPU(obj);
 183     CPUAlphaState *env = &cpu->env;
 184
 185     env->amask |= AMASK_BWX;
 186 }
 187
 188 static const TypeInfo ev56_cpu_type_info = {
 189     .name = TYPE("ev56"),
 190     .parent = TYPE("ev5"),
 191     .instance_init = ev56_cpu_initfn,
 192 };
 193
 194 static void pca56_cpu_initfn(Object *obj)
 195 {
 196     AlphaCPU *cpu = ALPHA_CPU(obj);
 197     CPUAlphaState *env = &cpu->env;
 198
 199     env->amask |= AMASK_MVI;
 200 }
 201
 202 static const TypeInfo pca56_cpu_type_info = {
 203     .name = TYPE("pca56"),
 204     .parent = TYPE("ev56"),
 205     .instance_init = pca56_cpu_initfn,
 206 };
 207
 208 static void ev6_cpu_initfn(Object *obj)
 209 {
 210     AlphaCPU *cpu = ALPHA_CPU(obj);
 211     CPUAlphaState *env = &cpu->env;
 212
 213     env->implver = IMPLVER_21264;
 214     env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;
 215 }
 216
 217 static const TypeInfo ev6_cpu_type_info = {
 218     .name = TYPE("ev6"),
 219     .parent = TYPE_ALPHA_CPU,
 220     .instance_init = ev6_cpu_initfn,
 221 };
 222
 223 static void ev67_cpu_initfn(Object *obj)
 224 {
 225     AlphaCPU *cpu = ALPHA_CPU(obj);
 226     CPUAlphaState *env = &cpu->env;
 227
 228     env->amask |= AMASK_CIX | AMASK_PREFETCH;
 229 }
 230
 231 static const TypeInfo ev67_cpu_type_info = {
 232     .name = TYPE("ev67"),
 233     .parent = TYPE("ev6"),
 234     .instance_init = ev67_cpu_initfn,
 235 };
 236
 237 static const TypeInfo ev68_cpu_type_info = {
 238     .name = TYPE("ev68"),
 239     .parent = TYPE("ev67"),
 240 };
 241
 242 static void alpha_cpu_initfn(Object *obj)
 243 {
 244     CPUState *cs = CPU(obj);
 245     AlphaCPU *cpu = ALPHA_CPU(obj);
 246     CPUAlphaState *env = &cpu->env;
 247
 248     cs->env_ptr = env;
 249     cpu_exec_init(env);
 250     tlb_flush(env, 1);
 251
 252     alpha_translate_init();
 253
 254 #if defined(CONFIG_USER_ONLY)
 255     env->ps = PS_USER_MODE;
 256     cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
 257                                | FPCR_UNFD | FPCR_INED | FPCR_DNOD
 258                                | FPCR_DYN_NORMAL));
 259 #endif
 260     env->lock_addr = -1;
 261     env->fen = 1;
 262 }
 263
 264 static void alpha_cpu_class_init(ObjectClass *oc, void *data)
 265 {
 266     DeviceClass *dc = DEVICE_CLASS(oc);
 267     CPUClass *cc = CPU_CLASS(oc);
 268     AlphaCPUClass *acc = ALPHA_CPU_CLASS(oc);
 269
 270     acc->parent_realize = dc->realize;
 271     dc->realize = alpha_cpu_realizefn;
 272
 273     cc->class_by_name = alpha_cpu_class_by_name;
 274     cc->do_interrupt = alpha_cpu_do_interrupt;
 275     cc->dump_state = alpha_cpu_dump_state;
 276     cc->set_pc = alpha_cpu_set_pc;
 277     cc->gdb_read_register = alpha_cpu_gdb_read_register;
 278     cc->gdb_write_register = alpha_cpu_gdb_write_register;
 279 #ifndef CONFIG_USER_ONLY
 280     cc->do_unassigned_access = alpha_cpu_unassigned_access;
 281     cc->get_phys_page_debug = alpha_cpu_get_phys_page_debug;
 282     dc->vmsd = &vmstate_alpha_cpu;
 283 #endif
 284     cc->gdb_num_core_regs = 67;
 285 }
 286
 287 static const TypeInfo alpha_cpu_type_info = {
 288     .name = TYPE_ALPHA_CPU,
 289     .parent = TYPE_CPU,
 290     .instance_size = sizeof(AlphaCPU),
 291     .instance_init = alpha_cpu_initfn,
 292     .abstract = true,
 293     .class_size = sizeof(AlphaCPUClass),
 294     .class_init = alpha_cpu_class_init,
 295 };
 296
 297 static void alpha_cpu_register_types(void)
 298 {
 299     type_register_static(&alpha_cpu_type_info);
 300     type_register_static(&ev4_cpu_type_info);
 301     type_register_static(&ev5_cpu_type_info);
 302     type_register_static(&ev56_cpu_type_info);
 303     type_register_static(&pca56_cpu_type_info);
 304     type_register_static(&ev6_cpu_type_info);
 305     type_register_static(&ev67_cpu_type_info);
 306     type_register_static(&ev68_cpu_type_info);
 307 }
 308
 309 type_init(alpha_cpu_register_types)