/* * QEMU SuperH CPU * * Copyright (c) 2005 Samuel Tardieu * Copyright (c) 2012 SUSE LINUX Products GmbH * * 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 Lesser General Public * License along with this library; if not, see * <http://www.gnu.org/licenses/lgpl-2.1.html> */ #include "cpu.h" #include "qemu-common.h" #include "migration/vmstate.h" static void superh_cpu_set_pc(CPUState *cs, vaddr value) { SuperHCPU *cpu = SUPERH_CPU(cs); cpu->env.pc = value; } static void superh_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb) { SuperHCPU *cpu = SUPERH_CPU(cs); cpu->env.pc = tb->pc; cpu->env.flags = tb->flags; } static bool superh_cpu_has_work(CPUState *cs) { return cs->interrupt_request & CPU_INTERRUPT_HARD; } /* CPUClass::reset() */ static void superh_cpu_reset(CPUState *s) { SuperHCPU *cpu = SUPERH_CPU(s); SuperHCPUClass *scc = SUPERH_CPU_GET_CLASS(cpu); CPUSH4State *env = &cpu->env; scc->parent_reset(s); memset(env, 0, offsetof(CPUSH4State, id)); tlb_flush(s, 1); env->pc = 0xA0000000; #if defined(CONFIG_USER_ONLY) env->fpscr = FPSCR_PR; /* value for userspace according to the kernel */ set_float_rounding_mode(float_round_nearest_even, &env->fp_status); /* ?! */ #else env->sr = (1u << SR_MD) | (1u << SR_RB) | (1u << SR_BL) | (1u << SR_I3) | (1u << SR_I2) | (1u << SR_I1) | (1u << SR_I0); env->fpscr = FPSCR_DN | FPSCR_RM_ZERO; /* CPU reset value according to SH4 manual */ set_float_rounding_mode(float_round_to_zero, &env->fp_status); set_flush_to_zero(1, &env->fp_status); #endif set_default_nan_mode(1, &env->fp_status); } typedef struct SuperHCPUListState { fprintf_function cpu_fprintf; FILE *file; } SuperHCPUListState; /* Sort alphabetically by type name. */ static gint superh_cpu_list_compare(gconstpointer a, gconstpointer b) { ObjectClass *class_a = (ObjectClass *)a; ObjectClass *class_b = (ObjectClass *)b; const char *name_a, *name_b; name_a = object_class_get_name(class_a); name_b = object_class_get_name(class_b); return strcmp(name_a, name_b); } static void superh_cpu_list_entry(gpointer data, gpointer user_data) { ObjectClass *oc = data; SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc); SuperHCPUListState *s = user_data; (*s->cpu_fprintf)(s->file, "%s\n", scc->name); } void sh4_cpu_list(FILE *f, fprintf_function cpu_fprintf) { SuperHCPUListState s = { .cpu_fprintf = cpu_fprintf, .file = f, }; GSList *list; list = object_class_get_list(TYPE_SUPERH_CPU, false); list = g_slist_sort(list, superh_cpu_list_compare); g_slist_foreach(list, superh_cpu_list_entry, &s); g_slist_free(list); } static gint superh_cpu_name_compare(gconstpointer a, gconstpointer b) { const SuperHCPUClass *scc = SUPERH_CPU_CLASS(a); const char *name = b; return strcasecmp(scc->name, name); } static ObjectClass *superh_cpu_class_by_name(const char *cpu_model) { ObjectClass *oc; GSList *list, *item; if (cpu_model == NULL) { return NULL; } if (strcasecmp(cpu_model, "any") == 0) { return object_class_by_name(TYPE_SH7750R_CPU); } oc = object_class_by_name(cpu_model); if (oc != NULL && object_class_dynamic_cast(oc, TYPE_SUPERH_CPU) != NULL && !object_class_is_abstract(oc)) { return oc; } oc = NULL; list = object_class_get_list(TYPE_SUPERH_CPU, false); item = g_slist_find_custom(list, cpu_model, superh_cpu_name_compare); if (item != NULL) { oc = item->data; } g_slist_free(list); return oc; } SuperHCPU *cpu_sh4_init(const char *cpu_model) { return SUPERH_CPU(cpu_generic_init(TYPE_SUPERH_CPU, cpu_model)); } static void sh7750r_cpu_initfn(Object *obj) { SuperHCPU *cpu = SUPERH_CPU(obj); CPUSH4State *env = &cpu->env; env->id = SH_CPU_SH7750R; env->features = SH_FEATURE_BCR3_AND_BCR4; } static void sh7750r_class_init(ObjectClass *oc, void *data) { SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc); scc->name = "SH7750R"; scc->pvr = 0x00050000; scc->prr = 0x00000100; scc->cvr = 0x00110000; } static const TypeInfo sh7750r_type_info = { .name = TYPE_SH7750R_CPU, .parent = TYPE_SUPERH_CPU, .class_init = sh7750r_class_init, .instance_init = sh7750r_cpu_initfn, }; static void sh7751r_cpu_initfn(Object *obj) { SuperHCPU *cpu = SUPERH_CPU(obj); CPUSH4State *env = &cpu->env; env->id = SH_CPU_SH7751R; env->features = SH_FEATURE_BCR3_AND_BCR4; } static void sh7751r_class_init(ObjectClass *oc, void *data) { SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc); scc->name = "SH7751R"; scc->pvr = 0x04050005; scc->prr = 0x00000113; scc->cvr = 0x00110000; /* Neutered caches, should be 0x20480000 */ } static const TypeInfo sh7751r_type_info = { .name = TYPE_SH7751R_CPU, .parent = TYPE_SUPERH_CPU, .class_init = sh7751r_class_init, .instance_init = sh7751r_cpu_initfn, }; static void sh7785_cpu_initfn(Object *obj) { SuperHCPU *cpu = SUPERH_CPU(obj); CPUSH4State *env = &cpu->env; env->id = SH_CPU_SH7785; env->features = SH_FEATURE_SH4A; } static void sh7785_class_init(ObjectClass *oc, void *data) { SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc); scc->name = "SH7785"; scc->pvr = 0x10300700; scc->prr = 0x00000200; scc->cvr = 0x71440211; } static const TypeInfo sh7785_type_info = { .name = TYPE_SH7785_CPU, .parent = TYPE_SUPERH_CPU, .class_init = sh7785_class_init, .instance_init = sh7785_cpu_initfn, }; static void superh_cpu_realizefn(DeviceState *dev, Error **errp) { CPUState *cs = CPU(dev); SuperHCPUClass *scc = SUPERH_CPU_GET_CLASS(dev); cpu_reset(cs); qemu_init_vcpu(cs); scc->parent_realize(dev, errp); } static void superh_cpu_initfn(Object *obj) { CPUState *cs = CPU(obj); SuperHCPU *cpu = SUPERH_CPU(obj); CPUSH4State *env = &cpu->env; cs->env_ptr = env; cpu_exec_init(env); env->movcal_backup_tail = &(env->movcal_backup); if (tcg_enabled()) { sh4_translate_init(); } } static const VMStateDescription vmstate_sh_cpu = { .name = "cpu", .unmigratable = 1, }; static void superh_cpu_class_init(ObjectClass *oc, void *data) { DeviceClass *dc = DEVICE_CLASS(oc); CPUClass *cc = CPU_CLASS(oc); SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc); scc->parent_realize = dc->realize; dc->realize = superh_cpu_realizefn; scc->parent_reset = cc->reset; cc->reset = superh_cpu_reset; cc->class_by_name = superh_cpu_class_by_name; cc->has_work = superh_cpu_has_work; cc->do_interrupt = superh_cpu_do_interrupt; cc->cpu_exec_interrupt = superh_cpu_exec_interrupt; cc->dump_state = superh_cpu_dump_state; cc->set_pc = superh_cpu_set_pc; cc->synchronize_from_tb = superh_cpu_synchronize_from_tb; cc->gdb_read_register = superh_cpu_gdb_read_register; cc->gdb_write_register = superh_cpu_gdb_write_register; #ifdef CONFIG_USER_ONLY cc->handle_mmu_fault = superh_cpu_handle_mmu_fault; #else cc->get_phys_page_debug = superh_cpu_get_phys_page_debug; #endif dc->vmsd = &vmstate_sh_cpu; cc->gdb_num_core_regs = 59; } static const TypeInfo superh_cpu_type_info = { .name = TYPE_SUPERH_CPU, .parent = TYPE_CPU, .instance_size = sizeof(SuperHCPU), .instance_init = superh_cpu_initfn, .abstract = true, .class_size = sizeof(SuperHCPUClass), .class_init = superh_cpu_class_init, }; static void superh_cpu_register_types(void) { type_register_static(&superh_cpu_type_info); type_register_static(&sh7750r_type_info); type_register_static(&sh7751r_type_info); type_register_static(&sh7785_type_info); } type_init(superh_cpu_register_types)