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