diff options
Diffstat (limited to 'target-moxie/cpu.c')
| -rw-r--r-- | target-moxie/cpu.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/target-moxie/cpu.c b/target-moxie/cpu.c new file mode 100644 index 0000000000..c17d3f0bb5 --- /dev/null +++ b/target-moxie/cpu.c @@ -0,0 +1,172 @@ +/* + * QEMU Moxie CPU + * + * Copyright (c) 2013 Anthony Green + * + * 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 General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "cpu.h" +#include "qemu-common.h" +#include "migration/vmstate.h" +#include "machine.h" + +static void moxie_cpu_reset(CPUState *s) +{ + MoxieCPU *cpu = MOXIE_CPU(s); + MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu); + CPUMoxieState *env = &cpu->env; + + if (qemu_loglevel_mask(CPU_LOG_RESET)) { + qemu_log("CPU Reset (CPU %d)\n", s->cpu_index); + log_cpu_state(env, 0); + } + + mcc->parent_reset(s); + + memset(env, 0, offsetof(CPUMoxieState, breakpoints)); + env->pc = 0x1000; + + tlb_flush(env, 1); +} + +static void moxie_cpu_realizefn(DeviceState *dev, Error **errp) +{ + MoxieCPU *cpu = MOXIE_CPU(dev); + MoxieCPUClass *occ = MOXIE_CPU_GET_CLASS(dev); + + qemu_init_vcpu(&cpu->env); + cpu_reset(CPU(cpu)); + + occ->parent_realize(dev, errp); +} + +static void moxie_cpu_initfn(Object *obj) +{ + CPUState *cs = CPU(obj); + MoxieCPU *cpu = MOXIE_CPU(obj); + static int inited; + + cs->env_ptr = &cpu->env; + cpu_exec_init(&cpu->env); + + if (tcg_enabled() && !inited) { + inited = 1; + moxie_translate_init(); + } +} + +static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model) +{ + ObjectClass *oc; + + if (cpu_model == NULL) { + return NULL; + } + + oc = object_class_by_name(cpu_model); + if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_MOXIE_CPU) || + object_class_is_abstract(oc))) { + return NULL; + } + return oc; +} + +static void moxie_cpu_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + CPUClass *cc = CPU_CLASS(oc); + MoxieCPUClass *mcc = MOXIE_CPU_CLASS(oc); + + mcc->parent_realize = dc->realize; + dc->realize = moxie_cpu_realizefn; + + mcc->parent_reset = cc->reset; + cc->reset = moxie_cpu_reset; + + cc->class_by_name = moxie_cpu_class_by_name; + + dc->vmsd = &vmstate_moxie_cpu; +} + +static void moxielite_initfn(Object *obj) +{ + /* Set cpu feature flags */ +} + +static void moxie_any_initfn(Object *obj) +{ + /* Set cpu feature flags */ +} + +typedef struct MoxieCPUInfo { + const char *name; + void (*initfn)(Object *obj); +} MoxieCPUInfo; + +static const MoxieCPUInfo moxie_cpus[] = { + { .name = "MoxieLite", .initfn = moxielite_initfn }, + { .name = "any", .initfn = moxie_any_initfn }, +}; + +MoxieCPU *cpu_moxie_init(const char *cpu_model) +{ + MoxieCPU *cpu; + ObjectClass *oc; + + oc = moxie_cpu_class_by_name(cpu_model); + if (oc == NULL) { + return NULL; + } + cpu = MOXIE_CPU(object_new(object_class_get_name(oc))); + cpu->env.cpu_model_str = cpu_model; + + object_property_set_bool(OBJECT(cpu), true, "realized", NULL); + + return cpu; +} + +static void cpu_register(const MoxieCPUInfo *info) +{ + TypeInfo type_info = { + .parent = TYPE_MOXIE_CPU, + .instance_size = sizeof(MoxieCPU), + .instance_init = info->initfn, + .class_size = sizeof(MoxieCPUClass), + }; + + type_info.name = g_strdup_printf("%s-" TYPE_MOXIE_CPU, info->name); + type_register(&type_info); + g_free((void *)type_info.name); +} + +static const TypeInfo moxie_cpu_type_info = { + .name = TYPE_MOXIE_CPU, + .parent = TYPE_CPU, + .instance_size = sizeof(MoxieCPU), + .instance_init = moxie_cpu_initfn, + .class_size = sizeof(MoxieCPUClass), + .class_init = moxie_cpu_class_init, +}; + +static void moxie_cpu_register_types(void) +{ + int i; + type_register_static(&moxie_cpu_type_info); + for (i = 0; i < ARRAY_SIZE(moxie_cpus); i++) { + cpu_register(&moxie_cpus[i]); + } +} + +type_init(moxie_cpu_register_types) |