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     ObjectClass *cpu_class;
 135
 136     cpu_class = alpha_cpu_class_by_name(cpu_model);
 137     if (cpu_class == NULL) {
 138         /* Default to ev67; no reason not to emulate insns by default.  */
 139         cpu_class = object_class_by_name(TYPE("ev67"));
 140     }
 141     cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class)));
 142
 143     object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
 144
 145     return cpu;
 146 }
 147
 148 static void ev4_cpu_initfn(Object *obj)
 149 {
 150     AlphaCPU *cpu = ALPHA_CPU(obj);
 151     CPUAlphaState *env = &cpu->env;
 152
 153     env->implver = IMPLVER_2106x;
 154 }
 155
 156 static const TypeInfo ev4_cpu_type_info = {
 157     .name = TYPE("ev4"),
 158     .parent = TYPE_ALPHA_CPU,
 159     .instance_init = ev4_cpu_initfn,
 160 };
 161
 162 static void ev5_cpu_initfn(Object *obj)
 163 {
 164     AlphaCPU *cpu = ALPHA_CPU(obj);
 165     CPUAlphaState *env = &cpu->env;
 166
 167     env->implver = IMPLVER_21164;
 168 }
 169
 170 static const TypeInfo ev5_cpu_type_info = {
 171     .name = TYPE("ev5"),
 172     .parent = TYPE_ALPHA_CPU,
 173     .instance_init = ev5_cpu_initfn,
 174 };
 175
 176 static void ev56_cpu_initfn(Object *obj)
 177 {
 178     AlphaCPU *cpu = ALPHA_CPU(obj);
 179     CPUAlphaState *env = &cpu->env;
 180
 181     env->amask |= AMASK_BWX;
 182 }
 183
 184 static const TypeInfo ev56_cpu_type_info = {
 185     .name = TYPE("ev56"),
 186     .parent = TYPE("ev5"),
 187     .instance_init = ev56_cpu_initfn,
 188 };
 189
 190 static void pca56_cpu_initfn(Object *obj)
 191 {
 192     AlphaCPU *cpu = ALPHA_CPU(obj);
 193     CPUAlphaState *env = &cpu->env;
 194
 195     env->amask |= AMASK_MVI;
 196 }
 197
 198 static const TypeInfo pca56_cpu_type_info = {
 199     .name = TYPE("pca56"),
 200     .parent = TYPE("ev56"),
 201     .instance_init = pca56_cpu_initfn,
 202 };
 203
 204 static void ev6_cpu_initfn(Object *obj)
 205 {
 206     AlphaCPU *cpu = ALPHA_CPU(obj);
 207     CPUAlphaState *env = &cpu->env;
 208
 209     env->implver = IMPLVER_21264;
 210     env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;
 211 }
 212
 213 static const TypeInfo ev6_cpu_type_info = {
 214     .name = TYPE("ev6"),
 215     .parent = TYPE_ALPHA_CPU,
 216     .instance_init = ev6_cpu_initfn,
 217 };
 218
 219 static void ev67_cpu_initfn(Object *obj)
 220 {
 221     AlphaCPU *cpu = ALPHA_CPU(obj);
 222     CPUAlphaState *env = &cpu->env;
 223
 224     env->amask |= AMASK_CIX | AMASK_PREFETCH;
 225 }
 226
 227 static const TypeInfo ev67_cpu_type_info = {
 228     .name = TYPE("ev67"),
 229     .parent = TYPE("ev6"),
 230     .instance_init = ev67_cpu_initfn,
 231 };
 232
 233 static const TypeInfo ev68_cpu_type_info = {
 234     .name = TYPE("ev68"),
 235     .parent = TYPE("ev67"),
 236 };
 237
 238 static void alpha_cpu_initfn(Object *obj)
 239 {
 240     CPUState *cs = CPU(obj);
 241     AlphaCPU *cpu = ALPHA_CPU(obj);
 242     CPUAlphaState *env = &cpu->env;
 243
 244     cs->env_ptr = env;
 245     cpu_exec_init(env);
 246     tlb_flush(env, 1);
 247
 248     alpha_translate_init();
 249
 250 #if defined(CONFIG_USER_ONLY)
 251     env->ps = PS_USER_MODE;
 252     cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
 253                                | FPCR_UNFD | FPCR_INED | FPCR_DNOD
 254                                | FPCR_DYN_NORMAL));
 255 #endif
 256     env->lock_addr = -1;
 257     env->fen = 1;
 258 }
 259
 260 static void alpha_cpu_class_init(ObjectClass *oc, void *data)
 261 {
 262     DeviceClass *dc = DEVICE_CLASS(oc);
 263     CPUClass *cc = CPU_CLASS(oc);
 264     AlphaCPUClass *acc = ALPHA_CPU_CLASS(oc);
 265
 266     acc->parent_realize = dc->realize;
 267     dc->realize = alpha_cpu_realizefn;
 268
 269     cc->class_by_name = alpha_cpu_class_by_name;
 270     cc->do_interrupt = alpha_cpu_do_interrupt;
 271     cc->dump_state = alpha_cpu_dump_state;
 272     cc->set_pc = alpha_cpu_set_pc;
 273     cc->gdb_read_register = alpha_cpu_gdb_read_register;
 274     cc->gdb_write_register = alpha_cpu_gdb_write_register;
 275 #ifndef CONFIG_USER_ONLY
 276     cc->do_unassigned_access = alpha_cpu_unassigned_access;
 277     cc->get_phys_page_debug = alpha_cpu_get_phys_page_debug;
 278     dc->vmsd = &vmstate_alpha_cpu;
 279 #endif
 280     cc->gdb_num_core_regs = 67;
 281 }
 282
 283 static const TypeInfo alpha_cpu_type_info = {
 284     .name = TYPE_ALPHA_CPU,
 285     .parent = TYPE_CPU,
 286     .instance_size = sizeof(AlphaCPU),
 287     .instance_init = alpha_cpu_initfn,
 288     .abstract = true,
 289     .class_size = sizeof(AlphaCPUClass),
 290     .class_init = alpha_cpu_class_init,
 291 };
 292
 293 static void alpha_cpu_register_types(void)
 294 {
 295     type_register_static(&alpha_cpu_type_info);
 296     type_register_static(&ev4_cpu_type_info);
 297     type_register_static(&ev5_cpu_type_info);
 298     type_register_static(&ev56_cpu_type_info);
 299     type_register_static(&pca56_cpu_type_info);
 300     type_register_static(&ev6_cpu_type_info);
 301     type_register_static(&ev67_cpu_type_info);
 302     type_register_static(&ev68_cpu_type_info);
 303 }
 304
 305 type_init(alpha_cpu_register_types)