| /* |
| * QEMU Motorola 68k CPU |
| * |
| * 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 "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "cpu.h" |
| #include "migration/vmstate.h" |
| #include "fpu/softfloat.h" |
| |
| static void m68k_cpu_set_pc(CPUState *cs, vaddr value) |
| { |
| M68kCPU *cpu = M68K_CPU(cs); |
| |
| cpu->env.pc = value; |
| } |
| |
| static bool m68k_cpu_has_work(CPUState *cs) |
| { |
| return cs->interrupt_request & CPU_INTERRUPT_HARD; |
| } |
| |
| static void m68k_set_feature(CPUM68KState *env, int feature) |
| { |
| env->features |= (1u << feature); |
| } |
| |
| static void m68k_cpu_reset(DeviceState *dev) |
| { |
| CPUState *s = CPU(dev); |
| M68kCPU *cpu = M68K_CPU(s); |
| M68kCPUClass *mcc = M68K_CPU_GET_CLASS(cpu); |
| CPUM68KState *env = &cpu->env; |
| floatx80 nan = floatx80_default_nan(NULL); |
| int i; |
| |
| mcc->parent_reset(dev); |
| |
| memset(env, 0, offsetof(CPUM68KState, end_reset_fields)); |
| #ifdef CONFIG_SOFTMMU |
| cpu_m68k_set_sr(env, SR_S | SR_I); |
| #else |
| cpu_m68k_set_sr(env, 0); |
| #endif |
| for (i = 0; i < 8; i++) { |
| env->fregs[i].d = nan; |
| } |
| cpu_m68k_set_fpcr(env, 0); |
| env->fpsr = 0; |
| |
| /* TODO: We should set PC from the interrupt vector. */ |
| env->pc = 0; |
| } |
| |
| static void m68k_cpu_disas_set_info(CPUState *s, disassemble_info *info) |
| { |
| M68kCPU *cpu = M68K_CPU(s); |
| CPUM68KState *env = &cpu->env; |
| info->print_insn = print_insn_m68k; |
| if (m68k_feature(env, M68K_FEATURE_M68000)) { |
| info->mach = bfd_mach_m68040; |
| } |
| } |
| |
| /* CPU models */ |
| |
| static ObjectClass *m68k_cpu_class_by_name(const char *cpu_model) |
| { |
| ObjectClass *oc; |
| char *typename; |
| |
| typename = g_strdup_printf(M68K_CPU_TYPE_NAME("%s"), cpu_model); |
| oc = object_class_by_name(typename); |
| g_free(typename); |
| if (oc != NULL && (object_class_dynamic_cast(oc, TYPE_M68K_CPU) == NULL || |
| object_class_is_abstract(oc))) { |
| return NULL; |
| } |
| return oc; |
| } |
| |
| static void m5206_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); |
| } |
| |
| static void m68000_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m68k_set_feature(env, M68K_FEATURE_M68000); |
| m68k_set_feature(env, M68K_FEATURE_USP); |
| m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); |
| m68k_set_feature(env, M68K_FEATURE_MOVEP); |
| } |
| |
| /* common features for 68020, 68030 and 68040 */ |
| static void m680x0_cpu_common(CPUM68KState *env) |
| { |
| m68k_set_feature(env, M68K_FEATURE_M68000); |
| m68k_set_feature(env, M68K_FEATURE_USP); |
| m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); |
| m68k_set_feature(env, M68K_FEATURE_QUAD_MULDIV); |
| m68k_set_feature(env, M68K_FEATURE_BRAL); |
| m68k_set_feature(env, M68K_FEATURE_BCCL); |
| m68k_set_feature(env, M68K_FEATURE_BITFIELD); |
| m68k_set_feature(env, M68K_FEATURE_EXT_FULL); |
| m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX); |
| m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV); |
| m68k_set_feature(env, M68K_FEATURE_FPU); |
| m68k_set_feature(env, M68K_FEATURE_CAS); |
| m68k_set_feature(env, M68K_FEATURE_BKPT); |
| m68k_set_feature(env, M68K_FEATURE_RTD); |
| m68k_set_feature(env, M68K_FEATURE_CHK2); |
| m68k_set_feature(env, M68K_FEATURE_MOVEP); |
| } |
| |
| static void m68020_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m680x0_cpu_common(env); |
| m68k_set_feature(env, M68K_FEATURE_M68020); |
| } |
| |
| static void m68030_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m680x0_cpu_common(env); |
| m68k_set_feature(env, M68K_FEATURE_M68030); |
| } |
| |
| static void m68040_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m680x0_cpu_common(env); |
| m68k_set_feature(env, M68K_FEATURE_M68040); |
| } |
| |
| static void m68060_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m68k_set_feature(env, M68K_FEATURE_M68000); |
| m68k_set_feature(env, M68K_FEATURE_USP); |
| m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); |
| m68k_set_feature(env, M68K_FEATURE_BRAL); |
| m68k_set_feature(env, M68K_FEATURE_BCCL); |
| m68k_set_feature(env, M68K_FEATURE_BITFIELD); |
| m68k_set_feature(env, M68K_FEATURE_EXT_FULL); |
| m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX); |
| m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV); |
| m68k_set_feature(env, M68K_FEATURE_FPU); |
| m68k_set_feature(env, M68K_FEATURE_CAS); |
| m68k_set_feature(env, M68K_FEATURE_BKPT); |
| m68k_set_feature(env, M68K_FEATURE_RTD); |
| m68k_set_feature(env, M68K_FEATURE_CHK2); |
| m68k_set_feature(env, M68K_FEATURE_M68060); |
| } |
| |
| static void m5208_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); |
| m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); |
| m68k_set_feature(env, M68K_FEATURE_BRAL); |
| m68k_set_feature(env, M68K_FEATURE_CF_EMAC); |
| m68k_set_feature(env, M68K_FEATURE_USP); |
| } |
| |
| static void cfv4e_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); |
| m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); |
| m68k_set_feature(env, M68K_FEATURE_BRAL); |
| m68k_set_feature(env, M68K_FEATURE_CF_FPU); |
| m68k_set_feature(env, M68K_FEATURE_CF_EMAC); |
| m68k_set_feature(env, M68K_FEATURE_USP); |
| } |
| |
| static void any_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| CPUM68KState *env = &cpu->env; |
| |
| m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); |
| m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); |
| m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); |
| m68k_set_feature(env, M68K_FEATURE_BRAL); |
| m68k_set_feature(env, M68K_FEATURE_CF_FPU); |
| /* |
| * MAC and EMAC are mututally exclusive, so pick EMAC. |
| * It's mostly backwards compatible. |
| */ |
| m68k_set_feature(env, M68K_FEATURE_CF_EMAC); |
| m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B); |
| m68k_set_feature(env, M68K_FEATURE_USP); |
| m68k_set_feature(env, M68K_FEATURE_EXT_FULL); |
| m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); |
| } |
| |
| static void m68k_cpu_realizefn(DeviceState *dev, Error **errp) |
| { |
| CPUState *cs = CPU(dev); |
| M68kCPU *cpu = M68K_CPU(dev); |
| M68kCPUClass *mcc = M68K_CPU_GET_CLASS(dev); |
| Error *local_err = NULL; |
| |
| register_m68k_insns(&cpu->env); |
| |
| cpu_exec_realizefn(cs, &local_err); |
| if (local_err != NULL) { |
| error_propagate(errp, local_err); |
| return; |
| } |
| |
| m68k_cpu_init_gdb(cpu); |
| |
| cpu_reset(cs); |
| qemu_init_vcpu(cs); |
| |
| mcc->parent_realize(dev, errp); |
| } |
| |
| static void m68k_cpu_initfn(Object *obj) |
| { |
| M68kCPU *cpu = M68K_CPU(obj); |
| |
| cpu_set_cpustate_pointers(cpu); |
| } |
| |
| static const VMStateDescription vmstate_m68k_cpu = { |
| .name = "cpu", |
| .unmigratable = 1, |
| }; |
| |
| static void m68k_cpu_class_init(ObjectClass *c, void *data) |
| { |
| M68kCPUClass *mcc = M68K_CPU_CLASS(c); |
| CPUClass *cc = CPU_CLASS(c); |
| DeviceClass *dc = DEVICE_CLASS(c); |
| |
| device_class_set_parent_realize(dc, m68k_cpu_realizefn, |
| &mcc->parent_realize); |
| device_class_set_parent_reset(dc, m68k_cpu_reset, &mcc->parent_reset); |
| |
| cc->class_by_name = m68k_cpu_class_by_name; |
| cc->has_work = m68k_cpu_has_work; |
| cc->do_interrupt = m68k_cpu_do_interrupt; |
| cc->cpu_exec_interrupt = m68k_cpu_exec_interrupt; |
| cc->dump_state = m68k_cpu_dump_state; |
| cc->set_pc = m68k_cpu_set_pc; |
| cc->gdb_read_register = m68k_cpu_gdb_read_register; |
| cc->gdb_write_register = m68k_cpu_gdb_write_register; |
| cc->tlb_fill = m68k_cpu_tlb_fill; |
| #if defined(CONFIG_SOFTMMU) |
| cc->do_transaction_failed = m68k_cpu_transaction_failed; |
| cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug; |
| #endif |
| cc->disas_set_info = m68k_cpu_disas_set_info; |
| cc->tcg_initialize = m68k_tcg_init; |
| |
| cc->gdb_num_core_regs = 18; |
| cc->gdb_core_xml_file = "cf-core.xml"; |
| |
| dc->vmsd = &vmstate_m68k_cpu; |
| } |
| |
| #define DEFINE_M68K_CPU_TYPE(cpu_model, initfn) \ |
| { \ |
| .name = M68K_CPU_TYPE_NAME(cpu_model), \ |
| .instance_init = initfn, \ |
| .parent = TYPE_M68K_CPU, \ |
| } |
| |
| static const TypeInfo m68k_cpus_type_infos[] = { |
| { /* base class should be registered first */ |
| .name = TYPE_M68K_CPU, |
| .parent = TYPE_CPU, |
| .instance_size = sizeof(M68kCPU), |
| .instance_init = m68k_cpu_initfn, |
| .abstract = true, |
| .class_size = sizeof(M68kCPUClass), |
| .class_init = m68k_cpu_class_init, |
| }, |
| DEFINE_M68K_CPU_TYPE("m68000", m68000_cpu_initfn), |
| DEFINE_M68K_CPU_TYPE("m68020", m68020_cpu_initfn), |
| DEFINE_M68K_CPU_TYPE("m68030", m68030_cpu_initfn), |
| DEFINE_M68K_CPU_TYPE("m68040", m68040_cpu_initfn), |
| DEFINE_M68K_CPU_TYPE("m68060", m68060_cpu_initfn), |
| DEFINE_M68K_CPU_TYPE("m5206", m5206_cpu_initfn), |
| DEFINE_M68K_CPU_TYPE("m5208", m5208_cpu_initfn), |
| DEFINE_M68K_CPU_TYPE("cfv4e", cfv4e_cpu_initfn), |
| DEFINE_M68K_CPU_TYPE("any", any_cpu_initfn), |
| }; |
| |
| DEFINE_TYPES(m68k_cpus_type_infos) |