unicorn/qemu/target/m68k/cpu.c
Alex Bennée 0eee5afd0e
target/*/cpu.h: remove softfloat.h
As cpu.h is another typically widely included file which doesn't need
full access to the softfloat API we can remove the includes from here
as well. Where they do need types it's typically for float_status and
the rounding modes so we move that to softfloat-types.h as well.

As a result of not having softfloat in every cpu.h call we now need to
add it to various helpers that do need the full softfloat.h
definitions.

Backports commit 24f91e81b65fcdd0552d1f0fcb0ea7cfe3829c19 from qemu
2018-03-08 09:58:47 -05:00

317 lines
9.2 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 "hw/m68k/m68k.h"
#include "cpu.h"
#include "qemu-common.h"
#include "exec/exec-all.h"
#include "fpu/softfloat.h"
static void m68k_cpu_set_pc(CPUState *cs, vaddr value)
{
M68kCPU *cpu = M68K_CPU(cs->uc, 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);
}
/* CPUClass::reset() */
static void m68k_cpu_reset(CPUState *s)
{
M68kCPU *cpu = M68K_CPU(s->uc, s);
M68kCPUClass *mcc = M68K_CPU_GET_CLASS(s->uc, cpu);
CPUM68KState *env = &cpu->env;
floatx80 nan = floatx80_default_nan(NULL);
int i;
mcc->parent_reset(s);
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;
}
/* CPU models */
static ObjectClass *m68k_cpu_class_by_name(struct uc_struct *uc, const char *cpu_model)
{
ObjectClass *oc;
char *typename;
if (cpu_model == NULL) {
return NULL;
}
typename = g_strdup_printf("%s-" TYPE_M68K_CPU, cpu_model);
oc = object_class_by_name(uc, typename);
g_free(typename);
if (oc != NULL && (object_class_dynamic_cast(uc, oc, TYPE_M68K_CPU) == NULL ||
object_class_is_abstract(oc))) {
return NULL;
}
return oc;
}
static void m5206_cpu_initfn(struct uc_struct *uc, Object *obj, void *opaque)
{
M68kCPU *cpu = M68K_CPU(uc, obj);
CPUM68KState *env = &cpu->env;
m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
}
static void m68000_cpu_initfn(struct uc_struct *uc, Object *obj, void *opaque)
{
M68kCPU *cpu = M68K_CPU(uc, 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);
}
static void m68020_cpu_initfn(struct uc_struct *uc, Object *obj, void *opaque)
{
M68kCPU *cpu = M68K_CPU(uc, 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_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);
}
#define m68030_cpu_initfn m68020_cpu_initfn
static void m68040_cpu_initfn(struct uc_struct *uc, Object *obj, void *opaque)
{
M68kCPU *cpu = M68K_CPU(uc, obj);
CPUM68KState *env = &cpu->env;
m68020_cpu_initfn(uc, obj, opaque);
m68k_set_feature(env, M68K_FEATURE_M68040);
}
static void m68060_cpu_initfn(struct uc_struct *uc, Object *obj, void *opaque)
{
M68kCPU *cpu = M68K_CPU(uc, 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);
}
static void m5208_cpu_initfn(struct uc_struct *uc, Object *obj, void *opaque)
{
M68kCPU *cpu = M68K_CPU(uc, 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(struct uc_struct *uc, Object *obj, void *opaque)
{
M68kCPU *cpu = M68K_CPU(uc, 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(struct uc_struct *uc, Object *obj, void *opaque)
{
M68kCPU *cpu = M68K_CPU(uc, 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);
}
typedef struct M68kCPUInfo {
const char *name;
void (*instance_init)(struct uc_struct *uc, Object *obj, void *opaque);
} M68kCPUInfo;
static const M68kCPUInfo m68k_cpus[] = {
{ "m68000", m68000_cpu_initfn },
{ "m68020", m68020_cpu_initfn },
{ "m68030", m68030_cpu_initfn },
{ "m68040", m68040_cpu_initfn },
{ "m68060", m68060_cpu_initfn },
{ "m5206", m5206_cpu_initfn },
{ "m5208", m5208_cpu_initfn },
{ "cfv4e", cfv4e_cpu_initfn },
{ "any", any_cpu_initfn },
};
static int m68k_cpu_realizefn(struct uc_struct *uc, DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
M68kCPUClass *mcc = M68K_CPU_GET_CLASS(uc, dev);
cpu_reset(cs);
qemu_init_vcpu(cs);
mcc->parent_realize(cs->uc, dev, errp);
return 0;
}
static void m68k_cpu_initfn(struct uc_struct *uc, Object *obj, void *opaque)
{
CPUState *cs = CPU(obj);
M68kCPU *cpu = M68K_CPU(uc, obj);
CPUM68KState *env = &cpu->env;
cs->env_ptr = env;
cpu_exec_init(cs, opaque);
}
static void m68k_cpu_class_init(struct uc_struct *uc, ObjectClass *c, void *data)
{
M68kCPUClass *mcc = M68K_CPU_CLASS(uc, c);
CPUClass *cc = CPU_CLASS(uc, c);
DeviceClass *dc = DEVICE_CLASS(uc, c);
mcc->parent_realize = dc->realize;
dc->realize = m68k_cpu_realizefn;
mcc->parent_reset = cc->reset;
cc->reset = m68k_cpu_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->set_pc = m68k_cpu_set_pc;
cc->handle_mmu_fault = m68k_cpu_handle_mmu_fault;
#if defined(CONFIG_SOFTMMU)
cc->do_unassigned_access = m68k_cpu_unassigned_access;
cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug;
#endif
cc->tcg_initialize = m68k_tcg_init;
}
static void register_cpu_type(void *opaque, const M68kCPUInfo *info)
{
TypeInfo type_info = {0};
type_info.parent = TYPE_M68K_CPU,
type_info.instance_init = info->instance_init,
type_info.name = g_strdup_printf("%s-" TYPE_M68K_CPU, info->name);
type_register(opaque, &type_info);
g_free((void *)type_info.name);
}
void m68k_cpu_register_types(void *opaque)
{
const TypeInfo m68k_cpu_type_info = {
TYPE_M68K_CPU,
TYPE_CPU,
sizeof(M68kCPUClass),
sizeof(M68kCPU),
opaque,
m68k_cpu_initfn,
NULL,
NULL,
NULL,
m68k_cpu_class_init,
NULL,
NULL,
true,
};
int i;
type_register_static(opaque, &m68k_cpu_type_info);
for (i = 0; i < ARRAY_SIZE(m68k_cpus); i++) {
register_cpu_type(opaque, &m68k_cpus[i]);
}
}