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 bool m68k_cpu_has_work(CPUState
*cs
)
36 return cs
->interrupt_request
& CPU_INTERRUPT_HARD
;
39 static void m68k_set_feature(CPUM68KState
*env
, int feature
)
41 env
->features
|= (1u << feature
);
44 static void m68k_unset_feature(CPUM68KState
*env
, int feature
)
46 env
->features
&= (-1u - (1u << feature
));
49 static void m68k_cpu_reset(DeviceState
*dev
)
51 CPUState
*s
= CPU(dev
);
52 M68kCPU
*cpu
= M68K_CPU(s
);
53 M68kCPUClass
*mcc
= M68K_CPU_GET_CLASS(cpu
);
54 CPUM68KState
*env
= &cpu
->env
;
55 floatx80 nan
= floatx80_default_nan(NULL
);
58 mcc
->parent_reset(dev
);
60 memset(env
, 0, offsetof(CPUM68KState
, end_reset_fields
));
62 cpu_m68k_set_sr(env
, SR_S
| SR_I
);
64 cpu_m68k_set_sr(env
, 0);
66 for (i
= 0; i
< 8; i
++) {
67 env
->fregs
[i
].d
= nan
;
69 cpu_m68k_set_fpcr(env
, 0);
72 /* TODO: We should set PC from the interrupt vector. */
76 static void m68k_cpu_disas_set_info(CPUState
*s
, disassemble_info
*info
)
78 M68kCPU
*cpu
= M68K_CPU(s
);
79 CPUM68KState
*env
= &cpu
->env
;
80 info
->print_insn
= print_insn_m68k
;
81 if (m68k_feature(env
, M68K_FEATURE_M68000
)) {
82 info
->mach
= bfd_mach_m68040
;
88 static ObjectClass
*m68k_cpu_class_by_name(const char *cpu_model
)
93 typename
= g_strdup_printf(M68K_CPU_TYPE_NAME("%s"), cpu_model
);
94 oc
= object_class_by_name(typename
);
96 if (oc
!= NULL
&& (object_class_dynamic_cast(oc
, TYPE_M68K_CPU
) == NULL
||
97 object_class_is_abstract(oc
))) {
103 static void m5206_cpu_initfn(Object
*obj
)
105 M68kCPU
*cpu
= M68K_CPU(obj
);
106 CPUM68KState
*env
= &cpu
->env
;
108 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_A
);
111 /* Base feature set, including isns. for m68k family */
112 static void m68000_cpu_initfn(Object
*obj
)
114 M68kCPU
*cpu
= M68K_CPU(obj
);
115 CPUM68KState
*env
= &cpu
->env
;
117 m68k_set_feature(env
, M68K_FEATURE_M68000
);
118 m68k_set_feature(env
, M68K_FEATURE_USP
);
119 m68k_set_feature(env
, M68K_FEATURE_WORD_INDEX
);
120 m68k_set_feature(env
, M68K_FEATURE_MOVEP
);
124 * Adds BKPT, MOVE-from-SR *now priv instr, and MOVEC, MOVES, RTD
126 static void m68010_cpu_initfn(Object
*obj
)
128 M68kCPU
*cpu
= M68K_CPU(obj
);
129 CPUM68KState
*env
= &cpu
->env
;
131 m68000_cpu_initfn(obj
);
132 m68k_set_feature(env
, M68K_FEATURE_M68010
);
133 m68k_set_feature(env
, M68K_FEATURE_RTD
);
134 m68k_set_feature(env
, M68K_FEATURE_BKPT
);
135 m68k_set_feature(env
, M68K_FEATURE_MOVEC
);
139 * Adds BFCHG, BFCLR, BFEXTS, BFEXTU, BFFFO, BFINS, BFSET, BFTST, CAS, CAS2,
140 * CHK2, CMP2, DIVSL, DIVUL, EXTB, PACK, TRAPcc, UNPK.
143 * CALLM, cpBcc, cpDBcc, cpGEN, cpRESTORE, cpSAVE, cpScc, cpTRAPcc
145 static void m68020_cpu_initfn(Object
*obj
)
147 M68kCPU
*cpu
= M68K_CPU(obj
);
148 CPUM68KState
*env
= &cpu
->env
;
150 m68010_cpu_initfn(obj
);
151 m68k_unset_feature(env
, M68K_FEATURE_M68010
);
152 m68k_set_feature(env
, M68K_FEATURE_M68020
);
153 m68k_set_feature(env
, M68K_FEATURE_QUAD_MULDIV
);
154 m68k_set_feature(env
, M68K_FEATURE_BRAL
);
155 m68k_set_feature(env
, M68K_FEATURE_BCCL
);
156 m68k_set_feature(env
, M68K_FEATURE_BITFIELD
);
157 m68k_set_feature(env
, M68K_FEATURE_EXT_FULL
);
158 m68k_set_feature(env
, M68K_FEATURE_SCALED_INDEX
);
159 m68k_set_feature(env
, M68K_FEATURE_LONG_MULDIV
);
160 m68k_set_feature(env
, M68K_FEATURE_FPU
);
161 m68k_set_feature(env
, M68K_FEATURE_CAS
);
162 m68k_set_feature(env
, M68K_FEATURE_CHK2
);
163 m68k_set_feature(env
, M68K_FEATURE_MSP
);
164 m68k_set_feature(env
, M68K_FEATURE_UNALIGNED_DATA
);
169 * 68030 Only: PFLUSHA (*5), PLOAD (*5), PMOVE
170 * 68030/40 Only: PTEST
173 * 5. Not valid on MC68EC030
175 static void m68030_cpu_initfn(Object
*obj
)
177 M68kCPU
*cpu
= M68K_CPU(obj
);
178 CPUM68KState
*env
= &cpu
->env
;
180 m68020_cpu_initfn(obj
);
181 m68k_unset_feature(env
, M68K_FEATURE_M68020
);
182 m68k_set_feature(env
, M68K_FEATURE_M68030
);
187 * Adds all with Note *2: FABS, FSABS, FDABS, FADD, FSADD, FDADD, FBcc, FCMP,
188 * FDBcc, FDIV, FSDIV, FDDIV, FMOVE, FSMOVE, FDMOVE,
189 * FMOVEM, FMUL, FSMUL, FDMUL, FNEG, FSNEG, FDNEG, FNOP,
190 * FRESTORE, FSAVE, FScc, FSQRT, FSSQRT, FDSQRT, FSUB,
191 * FSSUB, FDSUB, FTRAPcc, FTST
193 * Adds with Notes *2, and *3: FACOS, FASIN, FATAN, FATANH, FCOS, FCOSH, FETOX,
194 * FETOXM, FGETEXP, FGETMAN, FINT, FINTRZ, FLOG10,
195 * FLOG2, FLOGN, FLOGNP1, FMOD, FMOVECR, FREM,
196 * FSCALE, FSGLDIV, FSGLMUL, FSIN, FSINCOS, FSINH,
197 * FTAN, FTANH, FTENTOX, FTWOTOX
199 * 2. Not applicable to the MC68EC040, MC68LC040, MC68EC060, and MC68LC060.
200 * 3. These are software-supported instructions on the MC68040 and MC68060.
202 static void m68040_cpu_initfn(Object
*obj
)
204 M68kCPU
*cpu
= M68K_CPU(obj
);
205 CPUM68KState
*env
= &cpu
->env
;
207 m68030_cpu_initfn(obj
);
208 m68k_unset_feature(env
, M68K_FEATURE_M68030
);
209 m68k_set_feature(env
, M68K_FEATURE_M68040
);
214 * Adds all with Note *2: CAS, CAS2, MULS, MULU, CHK2, CMP2, DIVS, DIVU
215 * All Fxxxx instructions are as per m68040 with exception to; FMOVEM NOTE3
217 * Does NOT implement MOVEP
220 * 2. Not applicable to the MC68EC040, MC68LC040, MC68EC060, and MC68LC060.
221 * 3. These are software-supported instructions on the MC68040 and MC68060.
223 static void m68060_cpu_initfn(Object
*obj
)
225 M68kCPU
*cpu
= M68K_CPU(obj
);
226 CPUM68KState
*env
= &cpu
->env
;
228 m68040_cpu_initfn(obj
);
229 m68k_unset_feature(env
, M68K_FEATURE_M68040
);
230 m68k_set_feature(env
, M68K_FEATURE_M68060
);
231 m68k_unset_feature(env
, M68K_FEATURE_MOVEP
);
233 /* Implemented as a software feature */
234 m68k_unset_feature(env
, M68K_FEATURE_QUAD_MULDIV
);
237 static void m5208_cpu_initfn(Object
*obj
)
239 M68kCPU
*cpu
= M68K_CPU(obj
);
240 CPUM68KState
*env
= &cpu
->env
;
242 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_A
);
243 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_APLUSC
);
244 m68k_set_feature(env
, M68K_FEATURE_BRAL
);
245 m68k_set_feature(env
, M68K_FEATURE_CF_EMAC
);
246 m68k_set_feature(env
, M68K_FEATURE_USP
);
249 static void cfv4e_cpu_initfn(Object
*obj
)
251 M68kCPU
*cpu
= M68K_CPU(obj
);
252 CPUM68KState
*env
= &cpu
->env
;
254 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_A
);
255 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_B
);
256 m68k_set_feature(env
, M68K_FEATURE_BRAL
);
257 m68k_set_feature(env
, M68K_FEATURE_CF_FPU
);
258 m68k_set_feature(env
, M68K_FEATURE_CF_EMAC
);
259 m68k_set_feature(env
, M68K_FEATURE_USP
);
262 static void any_cpu_initfn(Object
*obj
)
264 M68kCPU
*cpu
= M68K_CPU(obj
);
265 CPUM68KState
*env
= &cpu
->env
;
267 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_A
);
268 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_B
);
269 m68k_set_feature(env
, M68K_FEATURE_CF_ISA_APLUSC
);
270 m68k_set_feature(env
, M68K_FEATURE_BRAL
);
271 m68k_set_feature(env
, M68K_FEATURE_CF_FPU
);
273 * MAC and EMAC are mututally exclusive, so pick EMAC.
274 * It's mostly backwards compatible.
276 m68k_set_feature(env
, M68K_FEATURE_CF_EMAC
);
277 m68k_set_feature(env
, M68K_FEATURE_CF_EMAC_B
);
278 m68k_set_feature(env
, M68K_FEATURE_USP
);
279 m68k_set_feature(env
, M68K_FEATURE_EXT_FULL
);
280 m68k_set_feature(env
, M68K_FEATURE_WORD_INDEX
);
283 static void m68k_cpu_realizefn(DeviceState
*dev
, Error
**errp
)
285 CPUState
*cs
= CPU(dev
);
286 M68kCPU
*cpu
= M68K_CPU(dev
);
287 M68kCPUClass
*mcc
= M68K_CPU_GET_CLASS(dev
);
288 Error
*local_err
= NULL
;
290 register_m68k_insns(&cpu
->env
);
292 cpu_exec_realizefn(cs
, &local_err
);
293 if (local_err
!= NULL
) {
294 error_propagate(errp
, local_err
);
298 m68k_cpu_init_gdb(cpu
);
303 mcc
->parent_realize(dev
, errp
);
306 static void m68k_cpu_initfn(Object
*obj
)
308 M68kCPU
*cpu
= M68K_CPU(obj
);
310 cpu_set_cpustate_pointers(cpu
);
313 #if defined(CONFIG_SOFTMMU)
314 static bool fpu_needed(void *opaque
)
318 return m68k_feature(&s
->env
, M68K_FEATURE_CF_FPU
) ||
319 m68k_feature(&s
->env
, M68K_FEATURE_FPU
);
322 typedef struct m68k_FPReg_tmp
{
328 static void cpu_get_fp80(uint64_t *pmant
, uint16_t *pexp
, floatx80 f
)
333 *pmant
= temp
.l
.lower
;
334 *pexp
= temp
.l
.upper
;
337 static floatx80
cpu_set_fp80(uint64_t mant
, uint16_t upper
)
341 temp
.l
.upper
= upper
;
346 static int freg_pre_save(void *opaque
)
348 m68k_FPReg_tmp
*tmp
= opaque
;
350 cpu_get_fp80(&tmp
->tmp_mant
, &tmp
->tmp_exp
, tmp
->parent
->d
);
355 static int freg_post_load(void *opaque
, int version
)
357 m68k_FPReg_tmp
*tmp
= opaque
;
359 tmp
->parent
->d
= cpu_set_fp80(tmp
->tmp_mant
, tmp
->tmp_exp
);
364 static const VMStateDescription vmstate_freg_tmp
= {
366 .post_load
= freg_post_load
,
367 .pre_save
= freg_pre_save
,
368 .fields
= (VMStateField
[]) {
369 VMSTATE_UINT64(tmp_mant
, m68k_FPReg_tmp
),
370 VMSTATE_UINT16(tmp_exp
, m68k_FPReg_tmp
),
371 VMSTATE_END_OF_LIST()
375 static const VMStateDescription vmstate_freg
= {
377 .fields
= (VMStateField
[]) {
378 VMSTATE_WITH_TMP(FPReg
, m68k_FPReg_tmp
, vmstate_freg_tmp
),
379 VMSTATE_END_OF_LIST()
383 static int fpu_post_load(void *opaque
, int version
)
387 cpu_m68k_restore_fp_status(&s
->env
);
392 const VMStateDescription vmmstate_fpu
= {
395 .minimum_version_id
= 1,
396 .needed
= fpu_needed
,
397 .post_load
= fpu_post_load
,
398 .fields
= (VMStateField
[]) {
399 VMSTATE_UINT32(env
.fpcr
, M68kCPU
),
400 VMSTATE_UINT32(env
.fpsr
, M68kCPU
),
401 VMSTATE_STRUCT_ARRAY(env
.fregs
, M68kCPU
, 8, 0, vmstate_freg
, FPReg
),
402 VMSTATE_STRUCT(env
.fp_result
, M68kCPU
, 0, vmstate_freg
, FPReg
),
403 VMSTATE_END_OF_LIST()
407 static bool cf_spregs_needed(void *opaque
)
411 return m68k_feature(&s
->env
, M68K_FEATURE_CF_ISA_A
);
414 const VMStateDescription vmstate_cf_spregs
= {
415 .name
= "cpu/cf_spregs",
417 .minimum_version_id
= 1,
418 .needed
= cf_spregs_needed
,
419 .fields
= (VMStateField
[]) {
420 VMSTATE_UINT64_ARRAY(env
.macc
, M68kCPU
, 4),
421 VMSTATE_UINT32(env
.macsr
, M68kCPU
),
422 VMSTATE_UINT32(env
.mac_mask
, M68kCPU
),
423 VMSTATE_UINT32(env
.rambar0
, M68kCPU
),
424 VMSTATE_UINT32(env
.mbar
, M68kCPU
),
425 VMSTATE_END_OF_LIST()
429 static bool cpu_68040_mmu_needed(void *opaque
)
433 return m68k_feature(&s
->env
, M68K_FEATURE_M68040
);
436 const VMStateDescription vmstate_68040_mmu
= {
437 .name
= "cpu/68040_mmu",
439 .minimum_version_id
= 1,
440 .needed
= cpu_68040_mmu_needed
,
441 .fields
= (VMStateField
[]) {
442 VMSTATE_UINT32(env
.mmu
.ar
, M68kCPU
),
443 VMSTATE_UINT32(env
.mmu
.ssw
, M68kCPU
),
444 VMSTATE_UINT16(env
.mmu
.tcr
, M68kCPU
),
445 VMSTATE_UINT32(env
.mmu
.urp
, M68kCPU
),
446 VMSTATE_UINT32(env
.mmu
.srp
, M68kCPU
),
447 VMSTATE_BOOL(env
.mmu
.fault
, M68kCPU
),
448 VMSTATE_UINT32_ARRAY(env
.mmu
.ttr
, M68kCPU
, 4),
449 VMSTATE_UINT32(env
.mmu
.mmusr
, M68kCPU
),
450 VMSTATE_END_OF_LIST()
454 static bool cpu_68040_spregs_needed(void *opaque
)
458 return m68k_feature(&s
->env
, M68K_FEATURE_M68040
);
461 const VMStateDescription vmstate_68040_spregs
= {
462 .name
= "cpu/68040_spregs",
464 .minimum_version_id
= 1,
465 .needed
= cpu_68040_spregs_needed
,
466 .fields
= (VMStateField
[]) {
467 VMSTATE_UINT32(env
.vbr
, M68kCPU
),
468 VMSTATE_UINT32(env
.cacr
, M68kCPU
),
469 VMSTATE_UINT32(env
.sfc
, M68kCPU
),
470 VMSTATE_UINT32(env
.dfc
, M68kCPU
),
471 VMSTATE_END_OF_LIST()
475 static const VMStateDescription vmstate_m68k_cpu
= {
478 .minimum_version_id
= 1,
479 .fields
= (VMStateField
[]) {
480 VMSTATE_UINT32_ARRAY(env
.dregs
, M68kCPU
, 8),
481 VMSTATE_UINT32_ARRAY(env
.aregs
, M68kCPU
, 8),
482 VMSTATE_UINT32(env
.pc
, M68kCPU
),
483 VMSTATE_UINT32(env
.sr
, M68kCPU
),
484 VMSTATE_INT32(env
.current_sp
, M68kCPU
),
485 VMSTATE_UINT32_ARRAY(env
.sp
, M68kCPU
, 3),
486 VMSTATE_UINT32(env
.cc_op
, M68kCPU
),
487 VMSTATE_UINT32(env
.cc_x
, M68kCPU
),
488 VMSTATE_UINT32(env
.cc_n
, M68kCPU
),
489 VMSTATE_UINT32(env
.cc_v
, M68kCPU
),
490 VMSTATE_UINT32(env
.cc_c
, M68kCPU
),
491 VMSTATE_UINT32(env
.cc_z
, M68kCPU
),
492 VMSTATE_INT32(env
.pending_vector
, M68kCPU
),
493 VMSTATE_INT32(env
.pending_level
, M68kCPU
),
494 VMSTATE_END_OF_LIST()
496 .subsections
= (const VMStateDescription
* []) {
500 &vmstate_68040_spregs
,
506 #ifndef CONFIG_USER_ONLY
507 #include "hw/core/sysemu-cpu-ops.h"
509 static const struct SysemuCPUOps m68k_sysemu_ops
= {
510 .get_phys_page_debug
= m68k_cpu_get_phys_page_debug
,
514 #include "hw/core/tcg-cpu-ops.h"
516 static const struct TCGCPUOps m68k_tcg_ops
= {
517 .initialize
= m68k_tcg_init
,
519 #ifndef CONFIG_USER_ONLY
520 .tlb_fill
= m68k_cpu_tlb_fill
,
521 .cpu_exec_interrupt
= m68k_cpu_exec_interrupt
,
522 .do_interrupt
= m68k_cpu_do_interrupt
,
523 .do_transaction_failed
= m68k_cpu_transaction_failed
,
524 #endif /* !CONFIG_USER_ONLY */
527 static void m68k_cpu_class_init(ObjectClass
*c
, void *data
)
529 M68kCPUClass
*mcc
= M68K_CPU_CLASS(c
);
530 CPUClass
*cc
= CPU_CLASS(c
);
531 DeviceClass
*dc
= DEVICE_CLASS(c
);
533 device_class_set_parent_realize(dc
, m68k_cpu_realizefn
,
534 &mcc
->parent_realize
);
535 device_class_set_parent_reset(dc
, m68k_cpu_reset
, &mcc
->parent_reset
);
537 cc
->class_by_name
= m68k_cpu_class_by_name
;
538 cc
->has_work
= m68k_cpu_has_work
;
539 cc
->dump_state
= m68k_cpu_dump_state
;
540 cc
->set_pc
= m68k_cpu_set_pc
;
541 cc
->gdb_read_register
= m68k_cpu_gdb_read_register
;
542 cc
->gdb_write_register
= m68k_cpu_gdb_write_register
;
543 #if defined(CONFIG_SOFTMMU)
544 dc
->vmsd
= &vmstate_m68k_cpu
;
545 cc
->sysemu_ops
= &m68k_sysemu_ops
;
547 cc
->disas_set_info
= m68k_cpu_disas_set_info
;
549 cc
->gdb_num_core_regs
= 18;
550 cc
->tcg_ops
= &m68k_tcg_ops
;
553 static void m68k_cpu_class_init_cf_core(ObjectClass
*c
, void *data
)
555 CPUClass
*cc
= CPU_CLASS(c
);
557 cc
->gdb_core_xml_file
= "cf-core.xml";
560 #define DEFINE_M68K_CPU_TYPE_CF(model) \
562 .name = M68K_CPU_TYPE_NAME(#model), \
563 .instance_init = model##_cpu_initfn, \
564 .parent = TYPE_M68K_CPU, \
565 .class_init = m68k_cpu_class_init_cf_core \
568 static void m68k_cpu_class_init_m68k_core(ObjectClass
*c
, void *data
)
570 CPUClass
*cc
= CPU_CLASS(c
);
572 cc
->gdb_core_xml_file
= "m68k-core.xml";
575 #define DEFINE_M68K_CPU_TYPE_M68K(model) \
577 .name = M68K_CPU_TYPE_NAME(#model), \
578 .instance_init = model##_cpu_initfn, \
579 .parent = TYPE_M68K_CPU, \
580 .class_init = m68k_cpu_class_init_m68k_core \
583 static const TypeInfo m68k_cpus_type_infos
[] = {
584 { /* base class should be registered first */
585 .name
= TYPE_M68K_CPU
,
587 .instance_size
= sizeof(M68kCPU
),
588 .instance_init
= m68k_cpu_initfn
,
590 .class_size
= sizeof(M68kCPUClass
),
591 .class_init
= m68k_cpu_class_init
,
593 DEFINE_M68K_CPU_TYPE_M68K(m68000
),
594 DEFINE_M68K_CPU_TYPE_M68K(m68010
),
595 DEFINE_M68K_CPU_TYPE_M68K(m68020
),
596 DEFINE_M68K_CPU_TYPE_M68K(m68030
),
597 DEFINE_M68K_CPU_TYPE_M68K(m68040
),
598 DEFINE_M68K_CPU_TYPE_M68K(m68060
),
599 DEFINE_M68K_CPU_TYPE_CF(m5206
),
600 DEFINE_M68K_CPU_TYPE_CF(m5208
),
601 DEFINE_M68K_CPU_TYPE_CF(cfv4e
),
602 DEFINE_M68K_CPU_TYPE_CF(any
),
605 DEFINE_TYPES(m68k_cpus_type_infos
)