/* * 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 "qemu/osdep.h" #include "qapi/error.h" #include "cpu.h" #include "qemu-common.h" #include "migration/vmstate.h" #include "machine.h" #include "exec/exec-all.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_disas_set_info(CPUState *cpu, disassemble_info *info) { info->mach = bfd_arch_moxie; info->print_insn = print_insn_moxie; } 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 cc->disas_set_info = moxie_cpu_disas_set_info; /* * Reason: moxie_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 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)