350 lines
10 KiB
C
350 lines
10 KiB
C
/*
|
|
* 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;
|
|
|
|
dc->vmsd = &vmstate_m68k_cpu;
|
|
}
|
|
|
|
static void m68k_cpu_class_init_cf_core(ObjectClass *c, void *data)
|
|
{
|
|
CPUClass *cc = CPU_CLASS(c);
|
|
|
|
cc->gdb_core_xml_file = "cf-core.xml";
|
|
}
|
|
|
|
#define DEFINE_M68K_CPU_TYPE_CF(model) \
|
|
{ \
|
|
.name = M68K_CPU_TYPE_NAME(#model), \
|
|
.instance_init = model##_cpu_initfn, \
|
|
.parent = TYPE_M68K_CPU, \
|
|
.class_init = m68k_cpu_class_init_cf_core \
|
|
}
|
|
|
|
static void m68k_cpu_class_init_m68k_core(ObjectClass *c, void *data)
|
|
{
|
|
CPUClass *cc = CPU_CLASS(c);
|
|
|
|
cc->gdb_core_xml_file = "m68k-core.xml";
|
|
}
|
|
|
|
#define DEFINE_M68K_CPU_TYPE_M68K(model) \
|
|
{ \
|
|
.name = M68K_CPU_TYPE_NAME(#model), \
|
|
.instance_init = model##_cpu_initfn, \
|
|
.parent = TYPE_M68K_CPU, \
|
|
.class_init = m68k_cpu_class_init_m68k_core \
|
|
}
|
|
|
|
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_M68K(m68000),
|
|
DEFINE_M68K_CPU_TYPE_M68K(m68020),
|
|
DEFINE_M68K_CPU_TYPE_M68K(m68030),
|
|
DEFINE_M68K_CPU_TYPE_M68K(m68040),
|
|
DEFINE_M68K_CPU_TYPE_M68K(m68060),
|
|
DEFINE_M68K_CPU_TYPE_CF(m5206),
|
|
DEFINE_M68K_CPU_TYPE_CF(m5208),
|
|
DEFINE_M68K_CPU_TYPE_CF(cfv4e),
|
|
DEFINE_M68K_CPU_TYPE_CF(any),
|
|
};
|
|
|
|
DEFINE_TYPES(m68k_cpus_type_infos)
|