diff options
Diffstat (limited to 'qemu/target-moxie/cpu.c')
| -rw-r--r-- | qemu/target-moxie/cpu.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/qemu/target-moxie/cpu.c b/qemu/target-moxie/cpu.c new file mode 100644 index 000000000..6b035aaab --- /dev/null +++ b/qemu/target-moxie/cpu.c @@ -0,0 +1,176 @@ +/* + * 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_set_pc(CPUState *cs, vaddr value) +{ + MoxieCPU *cpu = MOXIE_CPU(cs); + + cpu->env.pc = value; +} + +static bool moxie_cpu_has_work(CPUState *cs) +{ + return cs->interrupt_request & CPU_INTERRUPT_HARD; +} + +static void moxie_cpu_reset(CPUState *s) +{ + MoxieCPU *cpu = MOXIE_CPU(s); + MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu); + CPUMoxieState *env = &cpu->env; + + mcc->parent_reset(s); + + memset(env, 0, sizeof(CPUMoxieState)); + env->pc = 0x1000; + + tlb_flush(s, 1); +} + +static void moxie_cpu_realizefn(DeviceState *dev, Error **errp) +{ + CPUState *cs = CPU(dev); + MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev); + + qemu_init_vcpu(cs); + cpu_reset(cs); + + mcc->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(cs, &error_abort); + + 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; + + cc->has_work = moxie_cpu_has_work; + cc->do_interrupt = moxie_cpu_do_interrupt; + cc->dump_state = moxie_cpu_dump_state; + cc->set_pc = moxie_cpu_set_pc; +#ifdef CONFIG_USER_ONLY + cc->handle_mmu_fault = moxie_cpu_handle_mmu_fault; +#else + cc->get_phys_page_debug = moxie_cpu_get_phys_page_debug; + cc->vmsd = &vmstate_moxie_cpu; +#endif +} + +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) +{ + return MOXIE_CPU(cpu_generic_init(TYPE_MOXIE_CPU, cpu_model)); +} + +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) |