mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-10-21 04:28:20 +02:00
3fb64fd5a2
Switch the m68k target from the old unassigned_access hook to the transaction_failed hook. The notable difference is that rather than it being called for all physical memory accesses which fail (including those made by DMA devices or by the gdbstub), it is only called for those made by the CPU via its MMU. (In previous commits we put in explicit checks for the direct physical loads made by the target/m68k code which will no longer be handled by calling the unassigned_access hook.) Backports commit e1aaf3a88e95ab007445281e2b2f6e3c8da47f22 from qemu
312 lines
9.4 KiB
C
312 lines
9.4 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(M68K_CPU_TYPE_NAME("%s"), 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);
|
|
}
|
|
|
|
static int m68k_cpu_realizefn(struct uc_struct *uc, DeviceState *dev, Error **errp)
|
|
{
|
|
CPUState *cs = CPU(dev);
|
|
M68kCPU *cpu = M68K_CPU(uc, dev);
|
|
M68kCPUClass *mcc = M68K_CPU_GET_CLASS(uc, dev);
|
|
|
|
register_m68k_insns(&cpu->env);
|
|
|
|
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, &error_abort, 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->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->tcg_initialize = m68k_tcg_init;
|
|
}
|
|
|
|
#define DEFINE_M68K_CPU_TYPE(cpu_model, initfn) \
|
|
{ \
|
|
M68K_CPU_TYPE_NAME(cpu_model), \
|
|
TYPE_M68K_CPU, \
|
|
\
|
|
0, \
|
|
0, \
|
|
NULL, \
|
|
\
|
|
initfn, \
|
|
}
|
|
|
|
static TypeInfo m68k_cpus_type_infos[] = {
|
|
{ /* base class should be registered first */
|
|
TYPE_M68K_CPU,
|
|
TYPE_CPU,
|
|
|
|
sizeof(M68kCPUClass),
|
|
sizeof(M68kCPU),
|
|
NULL,
|
|
|
|
m68k_cpu_initfn,
|
|
NULL,
|
|
NULL,
|
|
|
|
NULL,
|
|
|
|
m68k_cpu_class_init,
|
|
NULL,
|
|
NULL,
|
|
|
|
true,
|
|
},
|
|
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),
|
|
};
|
|
|
|
void m68k_cpu_register_types(void *opaque)
|
|
{
|
|
m68k_cpus_type_infos[0].instance_userdata = opaque;
|
|
|
|
type_register_static_array(opaque, m68k_cpus_type_infos, ARRAY_SIZE(m68k_cpus_type_infos));
|
|
}
|