Initial import of qemu-2.4.1HEADmaster

1 files changed, 332 insertions, 0 deletions

diff --git a/target-alpha/cpu.c b/target-alpha/cpu.c
new file mode 100644
index 00000000..ff1926a5
--- /dev/null
+++ b/target-alpha/cpu.c
@@ -0,0 +1,332 @@
+/*
+ * QEMU Alpha CPU
+ *
+ * Copyright (c) 2007 Jocelyn Mayer
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>
+ */
+
+#include "cpu.h"
+#include "qemu-common.h"
+#include "migration/vmstate.h"
+
+
+static void alpha_cpu_set_pc(CPUState *cs, vaddr value)
+{
+    AlphaCPU *cpu = ALPHA_CPU(cs);
+
+    cpu->env.pc = value;
+}
+
+static bool alpha_cpu_has_work(CPUState *cs)
+{
+    /* Here we are checking to see if the CPU should wake up from HALT.
+       We will have gotten into this state only for WTINT from PALmode.  */
+    /* ??? I'm not sure how the IPL state works with WTINT to keep a CPU
+       asleep even if (some) interrupts have been asserted.  For now,
+       assume that if a CPU really wants to stay asleep, it will mask
+       interrupts at the chipset level, which will prevent these bits
+       from being set in the first place.  */
+    return cs->interrupt_request & (CPU_INTERRUPT_HARD
+                                    | CPU_INTERRUPT_TIMER
+                                    | CPU_INTERRUPT_SMP
+                                    | CPU_INTERRUPT_MCHK);
+}
+
+static void alpha_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+    CPUState *cs = CPU(dev);
+    AlphaCPUClass *acc = ALPHA_CPU_GET_CLASS(dev);
+
+    qemu_init_vcpu(cs);
+
+    acc->parent_realize(dev, errp);
+}
+
+/* Sort alphabetically by type name. */
+static gint alpha_cpu_list_compare(gconstpointer a, gconstpointer b)
+{
+    ObjectClass *class_a = (ObjectClass *)a;
+    ObjectClass *class_b = (ObjectClass *)b;
+    const char *name_a, *name_b;
+
+    name_a = object_class_get_name(class_a);
+    name_b = object_class_get_name(class_b);
+    return strcmp(name_a, name_b);
+}
+
+static void alpha_cpu_list_entry(gpointer data, gpointer user_data)
+{
+    ObjectClass *oc = data;
+    CPUListState *s = user_data;
+
+    (*s->cpu_fprintf)(s->file, "  %s\n",
+                      object_class_get_name(oc));
+}
+
+void alpha_cpu_list(FILE *f, fprintf_function cpu_fprintf)
+{
+    CPUListState s = {
+        .file = f,
+        .cpu_fprintf = cpu_fprintf,
+    };
+    GSList *list;
+
+    list = object_class_get_list(TYPE_ALPHA_CPU, false);
+    list = g_slist_sort(list, alpha_cpu_list_compare);
+    (*cpu_fprintf)(f, "Available CPUs:\n");
+    g_slist_foreach(list, alpha_cpu_list_entry, &s);
+    g_slist_free(list);
+}
+
+/* Models */
+
+#define TYPE(model) model "-" TYPE_ALPHA_CPU
+
+typedef struct AlphaCPUAlias {
+    const char *alias;
+    const char *typename;
+} AlphaCPUAlias;
+
+static const AlphaCPUAlias alpha_cpu_aliases[] = {
+    { "21064",   TYPE("ev4") },
+    { "21164",   TYPE("ev5") },
+    { "21164a",  TYPE("ev56") },
+    { "21164pc", TYPE("pca56") },
+    { "21264",   TYPE("ev6") },
+    { "21264a",  TYPE("ev67") },
+};
+
+static ObjectClass *alpha_cpu_class_by_name(const char *cpu_model)
+{
+    ObjectClass *oc = NULL;
+    char *typename;
+    int i;
+
+    if (cpu_model == NULL) {
+        return NULL;
+    }
+
+    oc = object_class_by_name(cpu_model);
+    if (oc != NULL && object_class_dynamic_cast(oc, TYPE_ALPHA_CPU) != NULL &&
+        !object_class_is_abstract(oc)) {
+        return oc;
+    }
+
+    for (i = 0; i < ARRAY_SIZE(alpha_cpu_aliases); i++) {
+        if (strcmp(cpu_model, alpha_cpu_aliases[i].alias) == 0) {
+            oc = object_class_by_name(alpha_cpu_aliases[i].typename);
+            assert(oc != NULL && !object_class_is_abstract(oc));
+            return oc;
+        }
+    }
+
+    typename = g_strdup_printf("%s-" TYPE_ALPHA_CPU, cpu_model);
+    oc = object_class_by_name(typename);
+    g_free(typename);
+    if (oc != NULL && object_class_is_abstract(oc)) {
+        oc = NULL;
+    }
+    return oc;
+}
+
+AlphaCPU *cpu_alpha_init(const char *cpu_model)
+{
+    AlphaCPU *cpu;
+    ObjectClass *cpu_class;
+
+    cpu_class = alpha_cpu_class_by_name(cpu_model);
+    if (cpu_class == NULL) {
+        /* Default to ev67; no reason not to emulate insns by default.  */
+        cpu_class = object_class_by_name(TYPE("ev67"));
+    }
+    cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class)));
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
+
+    return cpu;
+}
+
+static void ev4_cpu_initfn(Object *obj)
+{
+    AlphaCPU *cpu = ALPHA_CPU(obj);
+    CPUAlphaState *env = &cpu->env;
+
+    env->implver = IMPLVER_2106x;
+}
+
+static const TypeInfo ev4_cpu_type_info = {
+    .name = TYPE("ev4"),
+    .parent = TYPE_ALPHA_CPU,
+    .instance_init = ev4_cpu_initfn,
+};
+
+static void ev5_cpu_initfn(Object *obj)
+{
+    AlphaCPU *cpu = ALPHA_CPU(obj);
+    CPUAlphaState *env = &cpu->env;
+
+    env->implver = IMPLVER_21164;
+}
+
+static const TypeInfo ev5_cpu_type_info = {
+    .name = TYPE("ev5"),
+    .parent = TYPE_ALPHA_CPU,
+    .instance_init = ev5_cpu_initfn,
+};
+
+static void ev56_cpu_initfn(Object *obj)
+{
+    AlphaCPU *cpu = ALPHA_CPU(obj);
+    CPUAlphaState *env = &cpu->env;
+
+    env->amask |= AMASK_BWX;
+}
+
+static const TypeInfo ev56_cpu_type_info = {
+    .name = TYPE("ev56"),
+    .parent = TYPE("ev5"),
+    .instance_init = ev56_cpu_initfn,
+};
+
+static void pca56_cpu_initfn(Object *obj)
+{
+    AlphaCPU *cpu = ALPHA_CPU(obj);
+    CPUAlphaState *env = &cpu->env;
+
+    env->amask |= AMASK_MVI;
+}
+
+static const TypeInfo pca56_cpu_type_info = {
+    .name = TYPE("pca56"),
+    .parent = TYPE("ev56"),
+    .instance_init = pca56_cpu_initfn,
+};
+
+static void ev6_cpu_initfn(Object *obj)
+{
+    AlphaCPU *cpu = ALPHA_CPU(obj);
+    CPUAlphaState *env = &cpu->env;
+
+    env->implver = IMPLVER_21264;
+    env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;
+}
+
+static const TypeInfo ev6_cpu_type_info = {
+    .name = TYPE("ev6"),
+    .parent = TYPE_ALPHA_CPU,
+    .instance_init = ev6_cpu_initfn,
+};
+
+static void ev67_cpu_initfn(Object *obj)
+{
+    AlphaCPU *cpu = ALPHA_CPU(obj);
+    CPUAlphaState *env = &cpu->env;
+
+    env->amask |= AMASK_CIX | AMASK_PREFETCH;
+}
+
+static const TypeInfo ev67_cpu_type_info = {
+    .name = TYPE("ev67"),
+    .parent = TYPE("ev6"),
+    .instance_init = ev67_cpu_initfn,
+};
+
+static const TypeInfo ev68_cpu_type_info = {
+    .name = TYPE("ev68"),
+    .parent = TYPE("ev67"),
+};
+
+static void alpha_cpu_initfn(Object *obj)
+{
+    CPUState *cs = CPU(obj);
+    AlphaCPU *cpu = ALPHA_CPU(obj);
+    CPUAlphaState *env = &cpu->env;
+
+    cs->env_ptr = env;
+    cpu_exec_init(cs, &error_abort);
+    tlb_flush(cs, 1);
+
+    alpha_translate_init();
+
+#if defined(CONFIG_USER_ONLY)
+    env->ps = PS_USER_MODE;
+    cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
+                               | FPCR_UNFD | FPCR_INED | FPCR_DNOD
+                               | FPCR_DYN_NORMAL));
+#endif
+    env->lock_addr = -1;
+    env->fen = 1;
+}
+
+static void alpha_cpu_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+    CPUClass *cc = CPU_CLASS(oc);
+    AlphaCPUClass *acc = ALPHA_CPU_CLASS(oc);
+
+    acc->parent_realize = dc->realize;
+    dc->realize = alpha_cpu_realizefn;
+
+    cc->class_by_name = alpha_cpu_class_by_name;
+    cc->has_work = alpha_cpu_has_work;
+    cc->do_interrupt = alpha_cpu_do_interrupt;
+    cc->cpu_exec_interrupt = alpha_cpu_exec_interrupt;
+    cc->dump_state = alpha_cpu_dump_state;
+    cc->set_pc = alpha_cpu_set_pc;
+    cc->gdb_read_register = alpha_cpu_gdb_read_register;
+    cc->gdb_write_register = alpha_cpu_gdb_write_register;
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = alpha_cpu_handle_mmu_fault;
+#else
+    cc->do_unassigned_access = alpha_cpu_unassigned_access;
+    cc->do_unaligned_access = alpha_cpu_do_unaligned_access;
+    cc->get_phys_page_debug = alpha_cpu_get_phys_page_debug;
+    dc->vmsd = &vmstate_alpha_cpu;
+#endif
+    cc->gdb_num_core_regs = 67;
+
+    /*
+     * Reason: alpha_cpu_initfn() calls cpu_exec_init(), which saves
+     * the object in cpus -> dangling pointer after final
+     * object_unref().
+     */
+    dc->cannot_destroy_with_object_finalize_yet = true;
+}
+
+static const TypeInfo alpha_cpu_type_info = {
+    .name = TYPE_ALPHA_CPU,
+    .parent = TYPE_CPU,
+    .instance_size = sizeof(AlphaCPU),
+    .instance_init = alpha_cpu_initfn,
+    .abstract = true,
+    .class_size = sizeof(AlphaCPUClass),
+    .class_init = alpha_cpu_class_init,
+};
+
+static void alpha_cpu_register_types(void)
+{
+    type_register_static(&alpha_cpu_type_info);
+    type_register_static(&ev4_cpu_type_info);
+    type_register_static(&ev5_cpu_type_info);
+    type_register_static(&ev56_cpu_type_info);
+    type_register_static(&pca56_cpu_type_info);
+    type_register_static(&ev6_cpu_type_info);
+    type_register_static(&ev67_cpu_type_info);
+    type_register_static(&ev68_cpu_type_info);
+}
+
+type_init(alpha_cpu_register_types)