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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/target-unicore32/cpu.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/target-unicore32/cpu.c')
-rw-r--r--qemu/target-unicore32/cpu.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/qemu/target-unicore32/cpu.c b/qemu/target-unicore32/cpu.c
new file mode 100644
index 000000000..fc451a1a3
--- /dev/null
+++ b/qemu/target-unicore32/cpu.c
@@ -0,0 +1,192 @@
+/*
+ * 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;
+}
+
+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)