2 * QEMU Motorola 68k CPU
4 * Copyright (c) 2012 SUSE LINUX Products GmbH
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see
18 * <http://www.gnu.org/licenses/lgpl-2.1.html>
21 #include "qemu/osdep.h"
22 #include "qapi/error.h"
24 #include "migration/vmstate.h"
25 #include "fpu/softfloat.h"
27 static void m68k_cpu_set_pc(CPUState
*cs
, vaddr value
)
29 M68kCPU
*cpu
= M68K_CPU(cs
);
34 static vaddr
m68k_cpu_get_pc(CPUState
*cs
)
36 M68kCPU
*cpu
= M68K_CPU(cs
);
41 static bool m68k_cpu_has_work(CPUState
*cs
)
43 return cs
->interrupt_request
& CPU_INTERRUPT_HARD
;
46 static void m68k_set_feature(CPUM68KState
*env
, int feature
)
48 env
->features
|= BIT_ULL(feature
);
51 static void m68k_unset_feature(CPUM68KState
*env
, int feature
)
53 env
->features
&= ~BIT_ULL(feature
);
56 static void m68k_cpu_reset(DeviceState
*dev
)
58 CPUState
*s
= CPU(dev
);
59 M68kCPU
*cpu
= M68K_CPU(s
);
60 M68kCPUClass
*mcc
= M68K_CPU_GET_CLASS(cpu
);
61 CPUM68KState
*env
= &cpu
->env
;
62 floatx80 nan
= floatx80_default_nan(NULL
);
65 mcc
->parent_reset(dev
);
67 memset(env
, 0, offsetof(CPUM68KState
, end_reset_fields
));
69 cpu_m68k_set_sr(env
, SR_S
| SR_I
);
71 cpu_m68k_set_sr(env
, 0);
73 for (i
= 0; i
< 8; i
++) {
74 env
->fregs
[i
].d
= nan
;
76 cpu_m68k_set_fpcr(env
, 0);
79 /* TODO: We should set PC from the interrupt vector. */
83 static void m68k_cpu_disas_set_info(CPUState
*s
, disassemble_info
*info
)
85 info
->print_insn
= print_insn_m68k
;
91 static ObjectClass
*m68k_cpu_class_by_name(const char *cpu_model
)
96 typename
= g_strdup_printf(M68K_CPU_TYPE_NAME("%s"), cpu_model
);
97 oc
= object_class_by_name(typename
);
99 if (oc
!= NULL
&& (object_class_dynamic_cast(oc
, TYPE_M68K_CPU
) == NULL
||
100 object_class_is_abstract(oc
))) {
106 static void m5206_cpu_initfn(Object
*obj
)
108 M68kCPU
*cpu
= M68K_CPU(obj
);
109 CPUM68KState
*env
= &cpu
->env
;
111 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_A
);
112 m68k_set_feature(env
, M68K_FEATURE_MOVEFROMSR_PRIV
);
115 /* Base feature set, including isns. for m68k family */
116 static void m68000_cpu_initfn(Object
*obj
)
118 M68kCPU
*cpu
= M68K_CPU(obj
);
119 CPUM68KState
*env
= &cpu
->env
;
121 m68k_set_feature(env
, M68K_FEATURE_M68K
);
122 m68k_set_feature(env
, M68K_FEATURE_USP
);
123 m68k_set_feature(env
, M68K_FEATURE_WORD_INDEX
);
124 m68k_set_feature(env
, M68K_FEATURE_MOVEP
);
128 * Adds BKPT, MOVE-from-SR *now priv instr, and MOVEC, MOVES, RTD
130 static void m68010_cpu_initfn(Object
*obj
)
132 M68kCPU
*cpu
= M68K_CPU(obj
);
133 CPUM68KState
*env
= &cpu
->env
;
135 m68000_cpu_initfn(obj
);
136 m68k_set_feature(env
, M68K_FEATURE_M68010
);
137 m68k_set_feature(env
, M68K_FEATURE_RTD
);
138 m68k_set_feature(env
, M68K_FEATURE_BKPT
);
139 m68k_set_feature(env
, M68K_FEATURE_MOVEC
);
140 m68k_set_feature(env
, M68K_FEATURE_MOVEFROMSR_PRIV
);
144 * Adds BFCHG, BFCLR, BFEXTS, BFEXTU, BFFFO, BFINS, BFSET, BFTST, CAS, CAS2,
145 * CHK2, CMP2, DIVSL, DIVUL, EXTB, PACK, TRAPcc, UNPK.
148 * CALLM, cpBcc, cpDBcc, cpGEN, cpRESTORE, cpSAVE, cpScc, cpTRAPcc
150 static void m68020_cpu_initfn(Object
*obj
)
152 M68kCPU
*cpu
= M68K_CPU(obj
);
153 CPUM68KState
*env
= &cpu
->env
;
155 m68010_cpu_initfn(obj
);
156 m68k_unset_feature(env
, M68K_FEATURE_M68010
);
157 m68k_set_feature(env
, M68K_FEATURE_M68020
);
158 m68k_set_feature(env
, M68K_FEATURE_QUAD_MULDIV
);
159 m68k_set_feature(env
, M68K_FEATURE_BRAL
);
160 m68k_set_feature(env
, M68K_FEATURE_BCCL
);
161 m68k_set_feature(env
, M68K_FEATURE_BITFIELD
);
162 m68k_set_feature(env
, M68K_FEATURE_EXT_FULL
);
163 m68k_set_feature(env
, M68K_FEATURE_SCALED_INDEX
);
164 m68k_set_feature(env
, M68K_FEATURE_LONG_MULDIV
);
165 m68k_set_feature(env
, M68K_FEATURE_FPU
);
166 m68k_set_feature(env
, M68K_FEATURE_CAS
);
167 m68k_set_feature(env
, M68K_FEATURE_CHK2
);
168 m68k_set_feature(env
, M68K_FEATURE_MSP
);
169 m68k_set_feature(env
, M68K_FEATURE_UNALIGNED_DATA
);
170 m68k_set_feature(env
, M68K_FEATURE_TRAPCC
);
175 * 68030 Only: PFLUSHA (*5), PLOAD (*5), PMOVE
176 * 68030/40 Only: PTEST
179 * 5. Not valid on MC68EC030
181 static void m68030_cpu_initfn(Object
*obj
)
183 M68kCPU
*cpu
= M68K_CPU(obj
);
184 CPUM68KState
*env
= &cpu
->env
;
186 m68020_cpu_initfn(obj
);
187 m68k_unset_feature(env
, M68K_FEATURE_M68020
);
188 m68k_set_feature(env
, M68K_FEATURE_M68030
);
193 * Adds all with Note *2: FABS, FSABS, FDABS, FADD, FSADD, FDADD, FBcc, FCMP,
194 * FDBcc, FDIV, FSDIV, FDDIV, FMOVE, FSMOVE, FDMOVE,
195 * FMOVEM, FMUL, FSMUL, FDMUL, FNEG, FSNEG, FDNEG, FNOP,
196 * FRESTORE, FSAVE, FScc, FSQRT, FSSQRT, FDSQRT, FSUB,
197 * FSSUB, FDSUB, FTRAPcc, FTST
199 * Adds with Notes *2, and *3: FACOS, FASIN, FATAN, FATANH, FCOS, FCOSH, FETOX,
200 * FETOXM, FGETEXP, FGETMAN, FINT, FINTRZ, FLOG10,
201 * FLOG2, FLOGN, FLOGNP1, FMOD, FMOVECR, FREM,
202 * FSCALE, FSGLDIV, FSGLMUL, FSIN, FSINCOS, FSINH,
203 * FTAN, FTANH, FTENTOX, FTWOTOX
205 * 2. Not applicable to the MC68EC040, MC68LC040, MC68EC060, and MC68LC060.
206 * 3. These are software-supported instructions on the MC68040 and MC68060.
208 static void m68040_cpu_initfn(Object
*obj
)
210 M68kCPU
*cpu
= M68K_CPU(obj
);
211 CPUM68KState
*env
= &cpu
->env
;
213 m68030_cpu_initfn(obj
);
214 m68k_unset_feature(env
, M68K_FEATURE_M68030
);
215 m68k_set_feature(env
, M68K_FEATURE_M68040
);
220 * Adds all with Note *2: CAS, CAS2, MULS, MULU, CHK2, CMP2, DIVS, DIVU
221 * All Fxxxx instructions are as per m68040 with exception to; FMOVEM NOTE3
223 * Does NOT implement MOVEP
226 * 2. Not applicable to the MC68EC040, MC68LC040, MC68EC060, and MC68LC060.
227 * 3. These are software-supported instructions on the MC68040 and MC68060.
229 static void m68060_cpu_initfn(Object
*obj
)
231 M68kCPU
*cpu
= M68K_CPU(obj
);
232 CPUM68KState
*env
= &cpu
->env
;
234 m68040_cpu_initfn(obj
);
235 m68k_unset_feature(env
, M68K_FEATURE_M68040
);
236 m68k_set_feature(env
, M68K_FEATURE_M68060
);
237 m68k_unset_feature(env
, M68K_FEATURE_MOVEP
);
239 /* Implemented as a software feature */
240 m68k_unset_feature(env
, M68K_FEATURE_QUAD_MULDIV
);
243 static void m5208_cpu_initfn(Object
*obj
)
245 M68kCPU
*cpu
= M68K_CPU(obj
);
246 CPUM68KState
*env
= &cpu
->env
;
248 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_A
);
249 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_APLUSC
);
250 m68k_set_feature(env
, M68K_FEATURE_BRAL
);
251 m68k_set_feature(env
, M68K_FEATURE_CF_EMAC
);
252 m68k_set_feature(env
, M68K_FEATURE_USP
);
253 m68k_set_feature(env
, M68K_FEATURE_MOVEFROMSR_PRIV
);
256 static void cfv4e_cpu_initfn(Object
*obj
)
258 M68kCPU
*cpu
= M68K_CPU(obj
);
259 CPUM68KState
*env
= &cpu
->env
;
261 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_A
);
262 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_B
);
263 m68k_set_feature(env
, M68K_FEATURE_BRAL
);
264 m68k_set_feature(env
, M68K_FEATURE_CF_FPU
);
265 m68k_set_feature(env
, M68K_FEATURE_CF_EMAC
);
266 m68k_set_feature(env
, M68K_FEATURE_USP
);
267 m68k_set_feature(env
, M68K_FEATURE_MOVEFROMSR_PRIV
);
270 static void any_cpu_initfn(Object
*obj
)
272 M68kCPU
*cpu
= M68K_CPU(obj
);
273 CPUM68KState
*env
= &cpu
->env
;
275 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_A
);
276 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_B
);
277 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_APLUSC
);
278 m68k_set_feature(env
, M68K_FEATURE_BRAL
);
279 m68k_set_feature(env
, M68K_FEATURE_CF_FPU
);
281 * MAC and EMAC are mututally exclusive, so pick EMAC.
282 * It's mostly backwards compatible.
284 m68k_set_feature(env
, M68K_FEATURE_CF_EMAC
);
285 m68k_set_feature(env
, M68K_FEATURE_CF_EMAC_B
);
286 m68k_set_feature(env
, M68K_FEATURE_USP
);
287 m68k_set_feature(env
, M68K_FEATURE_EXT_FULL
);
288 m68k_set_feature(env
, M68K_FEATURE_WORD_INDEX
);
289 m68k_set_feature(env
, M68K_FEATURE_MOVEFROMSR_PRIV
);
292 static void m68k_cpu_realizefn(DeviceState
*dev
, Error
**errp
)
294 CPUState
*cs
= CPU(dev
);
295 M68kCPU
*cpu
= M68K_CPU(dev
);
296 M68kCPUClass
*mcc
= M68K_CPU_GET_CLASS(dev
);
297 Error
*local_err
= NULL
;
299 register_m68k_insns(&cpu
->env
);
301 cpu_exec_realizefn(cs
, &local_err
);
302 if (local_err
!= NULL
) {
303 error_propagate(errp
, local_err
);
307 m68k_cpu_init_gdb(cpu
);
312 mcc
->parent_realize(dev
, errp
);
315 static void m68k_cpu_initfn(Object
*obj
)
317 M68kCPU
*cpu
= M68K_CPU(obj
);
319 cpu_set_cpustate_pointers(cpu
);
322 #if defined(CONFIG_SOFTMMU)
323 static bool fpu_needed(void *opaque
)
327 return m68k_feature(&s
->env
, M68K_FEATURE_CF_FPU
) ||
328 m68k_feature(&s
->env
, M68K_FEATURE_FPU
);
331 typedef struct m68k_FPReg_tmp
{
337 static void cpu_get_fp80(uint64_t *pmant
, uint16_t *pexp
, floatx80 f
)
342 *pmant
= temp
.l
.lower
;
343 *pexp
= temp
.l
.upper
;
346 static floatx80
cpu_set_fp80(uint64_t mant
, uint16_t upper
)
350 temp
.l
.upper
= upper
;
355 static int freg_pre_save(void *opaque
)
357 m68k_FPReg_tmp
*tmp
= opaque
;
359 cpu_get_fp80(&tmp
->tmp_mant
, &tmp
->tmp_exp
, tmp
->parent
->d
);
364 static int freg_post_load(void *opaque
, int version
)
366 m68k_FPReg_tmp
*tmp
= opaque
;
368 tmp
->parent
->d
= cpu_set_fp80(tmp
->tmp_mant
, tmp
->tmp_exp
);
373 static const VMStateDescription vmstate_freg_tmp
= {
375 .post_load
= freg_post_load
,
376 .pre_save
= freg_pre_save
,
377 .fields
= (VMStateField
[]) {
378 VMSTATE_UINT64(tmp_mant
, m68k_FPReg_tmp
),
379 VMSTATE_UINT16(tmp_exp
, m68k_FPReg_tmp
),
380 VMSTATE_END_OF_LIST()
384 static const VMStateDescription vmstate_freg
= {
386 .fields
= (VMStateField
[]) {
387 VMSTATE_WITH_TMP(FPReg
, m68k_FPReg_tmp
, vmstate_freg_tmp
),
388 VMSTATE_END_OF_LIST()
392 static int fpu_post_load(void *opaque
, int version
)
396 cpu_m68k_restore_fp_status(&s
->env
);
401 const VMStateDescription vmmstate_fpu
= {
404 .minimum_version_id
= 1,
405 .needed
= fpu_needed
,
406 .post_load
= fpu_post_load
,
407 .fields
= (VMStateField
[]) {
408 VMSTATE_UINT32(env
.fpcr
, M68kCPU
),
409 VMSTATE_UINT32(env
.fpsr
, M68kCPU
),
410 VMSTATE_STRUCT_ARRAY(env
.fregs
, M68kCPU
, 8, 0, vmstate_freg
, FPReg
),
411 VMSTATE_STRUCT(env
.fp_result
, M68kCPU
, 0, vmstate_freg
, FPReg
),
412 VMSTATE_END_OF_LIST()
416 static bool cf_spregs_needed(void *opaque
)
420 return m68k_feature(&s
->env
, M68K_FEATURE_CF_ISA_A
);
423 const VMStateDescription vmstate_cf_spregs
= {
424 .name
= "cpu/cf_spregs",
426 .minimum_version_id
= 1,
427 .needed
= cf_spregs_needed
,
428 .fields
= (VMStateField
[]) {
429 VMSTATE_UINT64_ARRAY(env
.macc
, M68kCPU
, 4),
430 VMSTATE_UINT32(env
.macsr
, M68kCPU
),
431 VMSTATE_UINT32(env
.mac_mask
, M68kCPU
),
432 VMSTATE_UINT32(env
.rambar0
, M68kCPU
),
433 VMSTATE_UINT32(env
.mbar
, M68kCPU
),
434 VMSTATE_END_OF_LIST()
438 static bool cpu_68040_mmu_needed(void *opaque
)
442 return m68k_feature(&s
->env
, M68K_FEATURE_M68040
);
445 const VMStateDescription vmstate_68040_mmu
= {
446 .name
= "cpu/68040_mmu",
448 .minimum_version_id
= 1,
449 .needed
= cpu_68040_mmu_needed
,
450 .fields
= (VMStateField
[]) {
451 VMSTATE_UINT32(env
.mmu
.ar
, M68kCPU
),
452 VMSTATE_UINT32(env
.mmu
.ssw
, M68kCPU
),
453 VMSTATE_UINT16(env
.mmu
.tcr
, M68kCPU
),
454 VMSTATE_UINT32(env
.mmu
.urp
, M68kCPU
),
455 VMSTATE_UINT32(env
.mmu
.srp
, M68kCPU
),
456 VMSTATE_BOOL(env
.mmu
.fault
, M68kCPU
),
457 VMSTATE_UINT32_ARRAY(env
.mmu
.ttr
, M68kCPU
, 4),
458 VMSTATE_UINT32(env
.mmu
.mmusr
, M68kCPU
),
459 VMSTATE_END_OF_LIST()
463 static bool cpu_68040_spregs_needed(void *opaque
)
467 return m68k_feature(&s
->env
, M68K_FEATURE_M68040
);
470 const VMStateDescription vmstate_68040_spregs
= {
471 .name
= "cpu/68040_spregs",
473 .minimum_version_id
= 1,
474 .needed
= cpu_68040_spregs_needed
,
475 .fields
= (VMStateField
[]) {
476 VMSTATE_UINT32(env
.vbr
, M68kCPU
),
477 VMSTATE_UINT32(env
.cacr
, M68kCPU
),
478 VMSTATE_UINT32(env
.sfc
, M68kCPU
),
479 VMSTATE_UINT32(env
.dfc
, M68kCPU
),
480 VMSTATE_END_OF_LIST()
484 static const VMStateDescription vmstate_m68k_cpu
= {
487 .minimum_version_id
= 1,
488 .fields
= (VMStateField
[]) {
489 VMSTATE_UINT32_ARRAY(env
.dregs
, M68kCPU
, 8),
490 VMSTATE_UINT32_ARRAY(env
.aregs
, M68kCPU
, 8),
491 VMSTATE_UINT32(env
.pc
, M68kCPU
),
492 VMSTATE_UINT32(env
.sr
, M68kCPU
),
493 VMSTATE_INT32(env
.current_sp
, M68kCPU
),
494 VMSTATE_UINT32_ARRAY(env
.sp
, M68kCPU
, 3),
495 VMSTATE_UINT32(env
.cc_op
, M68kCPU
),
496 VMSTATE_UINT32(env
.cc_x
, M68kCPU
),
497 VMSTATE_UINT32(env
.cc_n
, M68kCPU
),
498 VMSTATE_UINT32(env
.cc_v
, M68kCPU
),
499 VMSTATE_UINT32(env
.cc_c
, M68kCPU
),
500 VMSTATE_UINT32(env
.cc_z
, M68kCPU
),
501 VMSTATE_INT32(env
.pending_vector
, M68kCPU
),
502 VMSTATE_INT32(env
.pending_level
, M68kCPU
),
503 VMSTATE_END_OF_LIST()
505 .subsections
= (const VMStateDescription
* []) {
509 &vmstate_68040_spregs
,
515 #ifndef CONFIG_USER_ONLY
516 #include "hw/core/sysemu-cpu-ops.h"
518 static const struct SysemuCPUOps m68k_sysemu_ops
= {
519 .get_phys_page_debug
= m68k_cpu_get_phys_page_debug
,
523 #include "hw/core/tcg-cpu-ops.h"
525 static const struct TCGCPUOps m68k_tcg_ops
= {
526 .initialize
= m68k_tcg_init
,
528 #ifndef CONFIG_USER_ONLY
529 .tlb_fill
= m68k_cpu_tlb_fill
,
530 .cpu_exec_interrupt
= m68k_cpu_exec_interrupt
,
531 .do_interrupt
= m68k_cpu_do_interrupt
,
532 .do_transaction_failed
= m68k_cpu_transaction_failed
,
533 #endif /* !CONFIG_USER_ONLY */
536 static void m68k_cpu_class_init(ObjectClass
*c
, void *data
)
538 M68kCPUClass
*mcc
= M68K_CPU_CLASS(c
);
539 CPUClass
*cc
= CPU_CLASS(c
);
540 DeviceClass
*dc
= DEVICE_CLASS(c
);
542 device_class_set_parent_realize(dc
, m68k_cpu_realizefn
,
543 &mcc
->parent_realize
);
544 device_class_set_parent_reset(dc
, m68k_cpu_reset
, &mcc
->parent_reset
);
546 cc
->class_by_name
= m68k_cpu_class_by_name
;
547 cc
->has_work
= m68k_cpu_has_work
;
548 cc
->dump_state
= m68k_cpu_dump_state
;
549 cc
->set_pc
= m68k_cpu_set_pc
;
550 cc
->get_pc
= m68k_cpu_get_pc
;
551 cc
->gdb_read_register
= m68k_cpu_gdb_read_register
;
552 cc
->gdb_write_register
= m68k_cpu_gdb_write_register
;
553 #if defined(CONFIG_SOFTMMU)
554 dc
->vmsd
= &vmstate_m68k_cpu
;
555 cc
->sysemu_ops
= &m68k_sysemu_ops
;
557 cc
->disas_set_info
= m68k_cpu_disas_set_info
;
559 cc
->gdb_num_core_regs
= 18;
560 cc
->tcg_ops
= &m68k_tcg_ops
;
563 static void m68k_cpu_class_init_cf_core(ObjectClass
*c
, void *data
)
565 CPUClass
*cc
= CPU_CLASS(c
);
567 cc
->gdb_core_xml_file
= "cf-core.xml";
570 #define DEFINE_M68K_CPU_TYPE_CF(model) \
572 .name = M68K_CPU_TYPE_NAME(#model), \
573 .instance_init = model##_cpu_initfn, \
574 .parent = TYPE_M68K_CPU, \
575 .class_init = m68k_cpu_class_init_cf_core \
578 static void m68k_cpu_class_init_m68k_core(ObjectClass
*c
, void *data
)
580 CPUClass
*cc
= CPU_CLASS(c
);
582 cc
->gdb_core_xml_file
= "m68k-core.xml";
585 #define DEFINE_M68K_CPU_TYPE_M68K(model) \
587 .name = M68K_CPU_TYPE_NAME(#model), \
588 .instance_init = model##_cpu_initfn, \
589 .parent = TYPE_M68K_CPU, \
590 .class_init = m68k_cpu_class_init_m68k_core \
593 static const TypeInfo m68k_cpus_type_infos
[] = {
594 { /* base class should be registered first */
595 .name
= TYPE_M68K_CPU
,
597 .instance_size
= sizeof(M68kCPU
),
598 .instance_init
= m68k_cpu_initfn
,
600 .class_size
= sizeof(M68kCPUClass
),
601 .class_init
= m68k_cpu_class_init
,
603 DEFINE_M68K_CPU_TYPE_M68K(m68000
),
604 DEFINE_M68K_CPU_TYPE_M68K(m68010
),
605 DEFINE_M68K_CPU_TYPE_M68K(m68020
),
606 DEFINE_M68K_CPU_TYPE_M68K(m68030
),
607 DEFINE_M68K_CPU_TYPE_M68K(m68040
),
608 DEFINE_M68K_CPU_TYPE_M68K(m68060
),
609 DEFINE_M68K_CPU_TYPE_CF(m5206
),
610 DEFINE_M68K_CPU_TYPE_CF(m5208
),
611 DEFINE_M68K_CPU_TYPE_CF(cfv4e
),
612 DEFINE_M68K_CPU_TYPE_CF(any
),
615 DEFINE_TYPES(m68k_cpus_type_infos
)