Initial import of qemu-2.4.1HEADmaster

1 files changed, 199 insertions, 0 deletions

diff --git a/target-unicore32/cpu.c b/target-unicore32/cpu.c
new file mode 100644
index 00000000..e5252eba
--- /dev/null
+++ b/target-unicore32/cpu.c
@@ -0,0 +1,199 @@
+/*
+ * QEMU UniCore32 CPU
+ *
+ * Copyright (c) 2010-2012 Guan Xuetao
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Contributions from 2012-04-01 on are considered under GPL version 2,
+ * or (at your option) any later version.
+ */
+
+#include "cpu.h"
+#include "qemu-common.h"
+#include "migration/vmstate.h"
+
+static void uc32_cpu_set_pc(CPUState *cs, vaddr value)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(cs);
+
+    cpu->env.regs[31] = value;
+}
+
+static bool uc32_cpu_has_work(CPUState *cs)
+{
+    return cs->interrupt_request &
+        (CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB);
+}
+
+static inline void set_feature(CPUUniCore32State *env, int feature)
+{
+    env->features |= feature;
+}
+
+/* CPU models */
+
+static ObjectClass *uc32_cpu_class_by_name(const char *cpu_model)
+{
+    ObjectClass *oc;
+    char *typename;
+
+    if (cpu_model == NULL) {
+        return NULL;
+    }
+
+    typename = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, cpu_model);
+    oc = object_class_by_name(typename);
+    g_free(typename);
+    if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_UNICORE32_CPU) ||
+                       object_class_is_abstract(oc))) {
+        oc = NULL;
+    }
+    return oc;
+}
+
+typedef struct UniCore32CPUInfo {
+    const char *name;
+    void (*instance_init)(Object *obj);
+} UniCore32CPUInfo;
+
+static void unicore_ii_cpu_initfn(Object *obj)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(obj);
+    CPUUniCore32State *env = &cpu->env;
+
+    env->cp0.c0_cpuid = 0x4d000863;
+    env->cp0.c0_cachetype = 0x0d152152;
+    env->cp0.c1_sys = 0x2000;
+    env->cp0.c2_base = 0x0;
+    env->cp0.c3_faultstatus = 0x0;
+    env->cp0.c4_faultaddr = 0x0;
+    env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
+
+    set_feature(env, UC32_HWCAP_CMOV);
+    set_feature(env, UC32_HWCAP_UCF64);
+}
+
+static void uc32_any_cpu_initfn(Object *obj)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(obj);
+    CPUUniCore32State *env = &cpu->env;
+
+    env->cp0.c0_cpuid = 0xffffffff;
+    env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
+
+    set_feature(env, UC32_HWCAP_CMOV);
+    set_feature(env, UC32_HWCAP_UCF64);
+}
+
+static const UniCore32CPUInfo uc32_cpus[] = {
+    { .name = "UniCore-II", .instance_init = unicore_ii_cpu_initfn },
+    { .name = "any",        .instance_init = uc32_any_cpu_initfn },
+};
+
+static void uc32_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+    UniCore32CPUClass *ucc = UNICORE32_CPU_GET_CLASS(dev);
+
+    qemu_init_vcpu(CPU(dev));
+
+    ucc->parent_realize(dev, errp);
+}
+
+static void uc32_cpu_initfn(Object *obj)
+{
+    CPUState *cs = CPU(obj);
+    UniCore32CPU *cpu = UNICORE32_CPU(obj);
+    CPUUniCore32State *env = &cpu->env;
+    static bool inited;
+
+    cs->env_ptr = env;
+    cpu_exec_init(cs, &error_abort);
+
+#ifdef CONFIG_USER_ONLY
+    env->uncached_asr = ASR_MODE_USER;
+    env->regs[31] = 0;
+#else
+    env->uncached_asr = ASR_MODE_PRIV;
+    env->regs[31] = 0x03000000;
+#endif
+
+    tlb_flush(cs, 1);
+
+    if (tcg_enabled() && !inited) {
+        inited = true;
+        uc32_translate_init();
+    }
+}
+
+static const VMStateDescription vmstate_uc32_cpu = {
+    .name = "cpu",
+    .unmigratable = 1,
+};
+
+static void uc32_cpu_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+    CPUClass *cc = CPU_CLASS(oc);
+    UniCore32CPUClass *ucc = UNICORE32_CPU_CLASS(oc);
+
+    ucc->parent_realize = dc->realize;
+    dc->realize = uc32_cpu_realizefn;
+
+    cc->class_by_name = uc32_cpu_class_by_name;
+    cc->has_work = uc32_cpu_has_work;
+    cc->do_interrupt = uc32_cpu_do_interrupt;
+    cc->cpu_exec_interrupt = uc32_cpu_exec_interrupt;
+    cc->dump_state = uc32_cpu_dump_state;
+    cc->set_pc = uc32_cpu_set_pc;
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = uc32_cpu_handle_mmu_fault;
+#else
+    cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug;
+#endif
+    dc->vmsd = &vmstate_uc32_cpu;
+
+    /*
+     * Reason: uc32_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 void uc32_register_cpu_type(const UniCore32CPUInfo *info)
+{
+    TypeInfo type_info = {
+        .parent = TYPE_UNICORE32_CPU,
+        .instance_init = info->instance_init,
+    };
+
+    type_info.name = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, info->name);
+    type_register(&type_info);
+    g_free((void *)type_info.name);
+}
+
+static const TypeInfo uc32_cpu_type_info = {
+    .name = TYPE_UNICORE32_CPU,
+    .parent = TYPE_CPU,
+    .instance_size = sizeof(UniCore32CPU),
+    .instance_init = uc32_cpu_initfn,
+    .abstract = true,
+    .class_size = sizeof(UniCore32CPUClass),
+    .class_init = uc32_cpu_class_init,
+};
+
+static void uc32_cpu_register_types(void)
+{
+    int i;
+
+    type_register_static(&uc32_cpu_type_info);
+    for (i = 0; i < ARRAY_SIZE(uc32_cpus); i++) {
+        uc32_register_cpu_type(&uc32_cpus[i]);
+    }
+}
+
+type_init(uc32_cpu_register_types)