25 |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
26 |
* |
* |
27 |
* |
* |
28 |
* $Id: cpu_m88k.c,v 1.7 2007/04/28 09:19:51 debug Exp $ |
* $Id: cpu_m88k.c,v 1.38 2007/06/07 15:36:24 debug Exp $ |
29 |
* |
* |
30 |
* M88K CPU emulation. |
* Motorola M881x0 CPU emulation. |
31 |
*/ |
*/ |
32 |
|
|
33 |
#include <stdio.h> |
#include <stdio.h> |
40 |
#include "machine.h" |
#include "machine.h" |
41 |
#include "memory.h" |
#include "memory.h" |
42 |
#include "misc.h" |
#include "misc.h" |
43 |
|
#include "mvmeprom.h" |
44 |
#include "settings.h" |
#include "settings.h" |
45 |
#include "symbol.h" |
#include "symbol.h" |
46 |
|
#include "timer.h" |
47 |
|
|
48 |
|
#include "m8820x_pte.h" |
49 |
|
#include "m88k_dmt.h" |
50 |
|
|
51 |
#define DYNTRANS_32 |
#define DYNTRANS_32 |
52 |
#define DYNTRANS_DELAYSLOT |
#define DYNTRANS_DELAYSLOT |
53 |
#include "tmp_m88k_head.c" |
#include "tmp_m88k_head.c" |
54 |
|
|
55 |
|
|
56 |
|
extern int native_code_translation_enabled; |
57 |
|
|
58 |
|
void m88k_pc_to_pointers(struct cpu *); |
59 |
|
|
60 |
static char *memop[4] = { ".d", "", ".h", ".b" }; |
static char *memop[4] = { ".d", "", ".h", ".b" }; |
61 |
|
|
62 |
void m88k_irq_interrupt_assert(struct interrupt *interrupt); |
void m88k_irq_interrupt_assert(struct interrupt *interrupt); |
63 |
void m88k_irq_interrupt_deassert(struct interrupt *interrupt); |
void m88k_irq_interrupt_deassert(struct interrupt *interrupt); |
64 |
|
|
65 |
|
|
66 |
|
static char *m88k_cr_names[] = M88K_CR_NAMES; |
67 |
|
static char *m88k_cr_197_names[] = M88K_CR_NAMES_197; |
68 |
|
|
69 |
|
static char *m88k_cr_name(struct cpu *cpu, int i) |
70 |
|
{ |
71 |
|
char **cr_names = m88k_cr_names; |
72 |
|
|
73 |
|
/* Hm. Is this really MVME197 specific? TODO */ |
74 |
|
if (cpu->machine->machine_subtype == MACHINE_MVME88K_197) |
75 |
|
cr_names = m88k_cr_197_names; |
76 |
|
|
77 |
|
return cr_names[i]; |
78 |
|
} |
79 |
|
|
80 |
|
static char *m88k_fcr_name(struct cpu *cpu, int fi) |
81 |
|
{ |
82 |
|
/* TODO */ |
83 |
|
static char fcr_name[10]; |
84 |
|
snprintf(fcr_name, sizeof(fcr_name), "FCR%i", fi); |
85 |
|
return fcr_name; |
86 |
|
} |
87 |
|
|
88 |
|
|
89 |
|
|
90 |
/* |
/* |
91 |
* m88k_cpu_new(): |
* m88k_cpu_new(): |
92 |
* |
* |
117 |
cpu->invalidate_translation_caches = |
cpu->invalidate_translation_caches = |
118 |
m88k_invalidate_translation_caches; |
m88k_invalidate_translation_caches; |
119 |
cpu->invalidate_code_translation = m88k_invalidate_code_translation; |
cpu->invalidate_code_translation = m88k_invalidate_code_translation; |
120 |
/* cpu->translate_v2p = m88k_translate_v2p; */ |
cpu->translate_v2p = m88k_translate_v2p; |
121 |
|
|
122 |
cpu->cd.m88k.cpu_type = cpu_type_defs[found]; |
cpu->cd.m88k.cpu_type = cpu_type_defs[found]; |
123 |
cpu->name = cpu->cd.m88k.cpu_type.name; |
cpu->name = cpu->cd.m88k.cpu_type.name; |
131 |
debug("%s", cpu->name); |
debug("%s", cpu->name); |
132 |
} |
} |
133 |
|
|
134 |
|
|
135 |
|
/* |
136 |
|
* Add register names as settings: |
137 |
|
*/ |
138 |
|
|
139 |
CPU_SETTINGS_ADD_REGISTER64("pc", cpu->pc); |
CPU_SETTINGS_ADD_REGISTER64("pc", cpu->pc); |
140 |
for (i=0; i<N_M88K_REGS - 1; i++) { |
|
141 |
|
for (i=0; i<N_M88K_REGS; i++) { |
142 |
char name[10]; |
char name[10]; |
143 |
snprintf(name, sizeof(name), "r%i", i); |
snprintf(name, sizeof(name), "r%i", i); |
144 |
CPU_SETTINGS_ADD_REGISTER32(name, cpu->cd.m88k.r[i]); |
CPU_SETTINGS_ADD_REGISTER32(name, cpu->cd.m88k.r[i]); |
145 |
} |
} |
146 |
|
|
147 |
|
for (i=0; i<N_M88K_CONTROL_REGS; i++) { |
148 |
|
char name[10]; |
149 |
|
snprintf(name, sizeof(name), "%s", m88k_cr_name(cpu, i)); |
150 |
|
CPU_SETTINGS_ADD_REGISTER32(name, cpu->cd.m88k.cr[i]); |
151 |
|
} |
152 |
|
|
153 |
|
for (i=0; i<N_M88K_FPU_CONTROL_REGS; i++) { |
154 |
|
char name[10]; |
155 |
|
snprintf(name, sizeof(name), "%s", m88k_fcr_name(cpu, i)); |
156 |
|
CPU_SETTINGS_ADD_REGISTER32(name, cpu->cd.m88k.fcr[i]); |
157 |
|
} |
158 |
|
|
159 |
|
|
160 |
/* Register the CPU interrupt pin: */ |
/* Register the CPU interrupt pin: */ |
161 |
{ |
{ |
162 |
struct interrupt template; |
struct interrupt template; |
163 |
char name[50]; |
char name[50]; |
164 |
snprintf(name, sizeof(name), "%s.irq", cpu->path); |
snprintf(name, sizeof(name), "%s", cpu->path); |
165 |
|
|
166 |
|
memset(&template, 0, sizeof(template)); |
167 |
|
template.line = 0; |
168 |
|
template.name = name; |
169 |
|
template.extra = cpu; |
170 |
|
template.interrupt_assert = m88k_irq_interrupt_assert; |
171 |
|
template.interrupt_deassert = m88k_irq_interrupt_deassert; |
172 |
|
interrupt_handler_register(&template); |
173 |
|
} |
174 |
|
|
175 |
memset(&template, 0, sizeof(template)); |
/* Set the Processor ID: */ |
176 |
template.line = 0; |
cpu->cd.m88k.cr[M88K_CR_PID] = cpu->cd.m88k.cpu_type.pid | M88K_PID_MC; |
|
template.name = name; |
|
|
template.extra = cpu; |
|
|
template.interrupt_assert = m88k_irq_interrupt_assert; |
|
|
template.interrupt_deassert = m88k_irq_interrupt_deassert; |
|
|
interrupt_handler_register(&template); |
|
|
} |
|
177 |
|
|
178 |
|
/* Start in supervisor mode, with interrupts disabled. */ |
179 |
|
cpu->cd.m88k.cr[M88K_CR_PSR] = M88K_PSR_MODE | M88K_PSR_IND; |
180 |
|
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
181 |
|
cpu->cd.m88k.cr[M88K_CR_PSR] |= M88K_PSR_BO; |
182 |
|
|
183 |
|
/* Initial stack pointer: */ |
184 |
|
cpu->cd.m88k.r[31] = 1048576 * cpu->machine->physical_ram_in_mb - 1024; |
185 |
|
|
186 |
|
if (native_code_translation_enabled) |
187 |
|
cpu->sampling_timer = timer_add(CPU_SAMPLE_TIMER_HZ, |
188 |
|
m88k_timer_sample_tick, cpu); |
189 |
|
|
190 |
return 1; |
return 1; |
191 |
} |
} |
230 |
/* |
/* |
231 |
* m88k_cpu_instruction_has_delayslot(): |
* m88k_cpu_instruction_has_delayslot(): |
232 |
* |
* |
233 |
* Return 1 if an opcode is a branch, 0 otherwise. |
* Returns 1 if an opcode has a delay slot after it, 0 otherwise. |
234 |
*/ |
*/ |
235 |
int m88k_cpu_instruction_has_delayslot(struct cpu *cpu, unsigned char *ib) |
int m88k_cpu_instruction_has_delayslot(struct cpu *cpu, unsigned char *ib) |
236 |
{ |
{ |
246 |
case 0x33: /* bsr.n */ |
case 0x33: /* bsr.n */ |
247 |
case 0x35: /* bb0.n */ |
case 0x35: /* bb0.n */ |
248 |
case 0x37: /* bb1.n */ |
case 0x37: /* bb1.n */ |
249 |
|
case 0x3b: /* bcnd.n */ |
250 |
return 1; |
return 1; |
251 |
|
case 0x3d: |
252 |
/* TODO: jsr.n, jmp.n */ |
switch ((iword >> 8) & 0xff) { |
253 |
|
case 0xc4: /* jmp.n */ |
254 |
|
case 0xcc: /* jsr.n */ |
255 |
|
return 1; |
256 |
|
} |
257 |
} |
} |
258 |
|
|
259 |
return 0; |
return 0; |
286 |
if (i == 0) |
if (i == 0) |
287 |
debug(" "); |
debug(" "); |
288 |
else |
else |
289 |
debug(" r%-2i = 0x%08x", i, |
debug(" r%-2i = 0x%08"PRIx32, |
290 |
(int)cpu->cd.m88k.r[i]); |
i, cpu->cd.m88k.r[i]); |
291 |
|
if ((i % 4) == 3) |
292 |
|
debug("\n"); |
293 |
|
} |
294 |
|
} |
295 |
|
|
296 |
|
if (coprocs & 1) { |
297 |
|
int n_control_regs = 32; |
298 |
|
|
299 |
|
/* Hm. Is this really MVME197 specific? TODO */ |
300 |
|
if (cpu->machine->machine_subtype == MACHINE_MVME88K_197) |
301 |
|
n_control_regs = 64; |
302 |
|
|
303 |
|
for (i=0; i<n_control_regs; i++) { |
304 |
|
if ((i % 4) == 0) |
305 |
|
debug("cpu%i:", x); |
306 |
|
debug(" %4s=0x%08"PRIx32, |
307 |
|
m88k_cr_name(cpu, i), cpu->cd.m88k.cr[i]); |
308 |
|
if ((i % 4) == 3) |
309 |
|
debug("\n"); |
310 |
|
} |
311 |
|
} |
312 |
|
|
313 |
|
if (coprocs & 2) { |
314 |
|
int n_fpu_control_regs = 64; |
315 |
|
|
316 |
|
for (i=0; i<n_fpu_control_regs; i++) { |
317 |
|
if ((i % 4) == 0) |
318 |
|
debug("cpu%i:", x); |
319 |
|
debug(" %5s=0x%08"PRIx32, |
320 |
|
m88k_fcr_name(cpu, i), cpu->cd.m88k.fcr[i]); |
321 |
if ((i % 4) == 3) |
if ((i % 4) == 3) |
322 |
debug("\n"); |
debug("\n"); |
323 |
} |
} |
336 |
*/ |
*/ |
337 |
void m88k_cpu_tlbdump(struct machine *m, int x, int rawflag) |
void m88k_cpu_tlbdump(struct machine *m, int x, int rawflag) |
338 |
{ |
{ |
339 |
|
int cpu_nr, cmmu_nr, i; |
340 |
|
|
341 |
|
for (cpu_nr = 0; cpu_nr < m->ncpus; cpu_nr++) { |
342 |
|
struct cpu *cpu = m->cpus[cpu_nr]; |
343 |
|
|
344 |
|
if (x != -1 && cpu_nr != x) |
345 |
|
continue; |
346 |
|
|
347 |
|
for (cmmu_nr = 0; cmmu_nr < MAX_M8820X_CMMUS; cmmu_nr++) { |
348 |
|
struct m8820x_cmmu *cmmu = cpu->cd.m88k.cmmu[cmmu_nr]; |
349 |
|
if (cmmu == NULL) |
350 |
|
continue; |
351 |
|
|
352 |
|
printf("cpu%i: CMMU %i (%s)\n", cpu_nr, cmmu_nr, |
353 |
|
cmmu_nr & 1? "data" : "instruction"); |
354 |
|
|
355 |
|
/* BATC: */ |
356 |
|
for (i = 0; i < N_M88200_BATC_REGS; i++) { |
357 |
|
uint32_t b = cmmu->batc[i]; |
358 |
|
printf("cpu%i: BATC[%2i]: ", cpu_nr, i); |
359 |
|
printf("v=0x%08"PRIx32, b & 0xfff80000); |
360 |
|
printf(", p=0x%08"PRIx32, |
361 |
|
(b << 13) & 0xfff80000); |
362 |
|
printf(", %s %s %s %s %s %s\n", |
363 |
|
b & BATC_SO? "SP " : "!sp", |
364 |
|
b & BATC_WT? "WT " : "!wt", |
365 |
|
b & BATC_GLOBAL? "G " : "!g ", |
366 |
|
b & BATC_INH? "CI " : "!ci", |
367 |
|
b & BATC_PROT? "WP " : "!wp", |
368 |
|
b & BATC_SO? "V " : "!v"); |
369 |
|
} |
370 |
|
|
371 |
|
/* PATC: */ |
372 |
|
for (i = 0; i < N_M88200_PATC_ENTRIES; i++) { |
373 |
|
uint32_t v = cmmu->patc_v_and_control[i]; |
374 |
|
uint32_t p = cmmu->patc_p_and_supervisorbit[i]; |
375 |
|
|
376 |
|
printf("cpu%i: patc[%2i]: ", cpu_nr, i); |
377 |
|
if (p & M8820X_PATC_SUPERVISOR_BIT) |
378 |
|
printf("superv"); |
379 |
|
else |
380 |
|
printf("user "); |
381 |
|
printf(" v=0x%08"PRIx32, v & 0xfffff000); |
382 |
|
printf(", p=0x%08"PRIx32, p & 0xfffff000); |
383 |
|
|
384 |
|
printf(" %s %s %s %s %s %s %s", |
385 |
|
v & PG_U1? "U1 " : "!u1", |
386 |
|
v & PG_U0? "U0 " : "!u0", |
387 |
|
v & PG_SO? "SP " : "!sp", |
388 |
|
v & PG_M? "M " : "!m", |
389 |
|
v & PG_U? "U " : "!u", |
390 |
|
v & PG_PROT? "WP " : "!wp", |
391 |
|
v & PG_V? "V " : "!v"); |
392 |
|
|
393 |
|
if (i == cmmu->patc_update_index) |
394 |
|
printf(" <--"); |
395 |
|
printf("\n"); |
396 |
|
} |
397 |
|
} |
398 |
|
} |
399 |
} |
} |
400 |
|
|
401 |
|
|
416 |
|
|
417 |
|
|
418 |
/* |
/* |
419 |
|
* m88k_ldcr(): |
420 |
|
* |
421 |
|
* Read from a control register. Store the resulting value in a register |
422 |
|
* (pointed to by r32ptr). |
423 |
|
*/ |
424 |
|
void m88k_ldcr(struct cpu *cpu, uint32_t *r32ptr, int cr) |
425 |
|
{ |
426 |
|
uint32_t retval = cpu->cd.m88k.cr[cr]; |
427 |
|
|
428 |
|
switch (cr) { |
429 |
|
|
430 |
|
case M88K_CR_PID: |
431 |
|
case M88K_CR_PSR: |
432 |
|
case M88K_CR_EPSR: |
433 |
|
case M88K_CR_SSBR: |
434 |
|
case M88K_CR_SXIP: |
435 |
|
case M88K_CR_SNIP: |
436 |
|
case M88K_CR_SFIP: |
437 |
|
case M88K_CR_VBR: |
438 |
|
case M88K_CR_DMD0: |
439 |
|
case M88K_CR_DMD1: |
440 |
|
case M88K_CR_DMD2: |
441 |
|
case M88K_CR_SR0: |
442 |
|
case M88K_CR_SR1: |
443 |
|
case M88K_CR_SR2: |
444 |
|
case M88K_CR_SR3: |
445 |
|
break; |
446 |
|
|
447 |
|
case M88K_CR_DMT0: |
448 |
|
case M88K_CR_DMT1: |
449 |
|
case M88K_CR_DMT2: |
450 |
|
/* |
451 |
|
* Catch some possible internal errors in the emulator: |
452 |
|
* |
453 |
|
* For valid memory Load transactions, the Destination Register |
454 |
|
* should not be zero. |
455 |
|
* |
456 |
|
* The Byte Order bit should be the same as the CPU's. |
457 |
|
*/ |
458 |
|
if (retval & DMT_VALID && !(retval & DMT_WRITE)) { |
459 |
|
if (DMT_DREGBITS(retval) == M88K_ZERO_REG) { |
460 |
|
fatal("DMT DREG = zero? Internal error.\n"); |
461 |
|
exit(1); |
462 |
|
} |
463 |
|
} |
464 |
|
if (!!(cpu->cd.m88k.cr[M88K_CR_PSR] & M88K_PSR_BO) |
465 |
|
!= !!(retval & DMT_BO) && retval & DMT_VALID) { |
466 |
|
fatal("DMT byte order not same as CPUs?\n"); |
467 |
|
exit(1); |
468 |
|
} |
469 |
|
|
470 |
|
break; |
471 |
|
|
472 |
|
case M88K_CR_DMA0: |
473 |
|
case M88K_CR_DMA1: |
474 |
|
case M88K_CR_DMA2: |
475 |
|
/* |
476 |
|
* Catch some possible internal errors in the emulator: |
477 |
|
* The lowest 2 bits of the transaction address registers |
478 |
|
* should always be zero. |
479 |
|
*/ |
480 |
|
if (retval & 3) { |
481 |
|
fatal("DMAx not word-aligned? Internal error.\n"); |
482 |
|
exit(1); |
483 |
|
} |
484 |
|
|
485 |
|
break; |
486 |
|
|
487 |
|
default:fatal("m88k_ldcr: UNIMPLEMENTED cr = 0x%02x (%s)\n", |
488 |
|
cr, m88k_cr_name(cpu, cr)); |
489 |
|
exit(1); |
490 |
|
} |
491 |
|
|
492 |
|
*r32ptr = retval; |
493 |
|
} |
494 |
|
|
495 |
|
|
496 |
|
/* |
497 |
|
* m88k_stcr(): |
498 |
|
* |
499 |
|
* Write to a control register. |
500 |
|
* (Used by both the stcr and rte instructions.) |
501 |
|
*/ |
502 |
|
void m88k_stcr(struct cpu *cpu, uint32_t value, int cr, int rte) |
503 |
|
{ |
504 |
|
uint32_t old = cpu->cd.m88k.cr[cr]; |
505 |
|
|
506 |
|
switch (cr) { |
507 |
|
|
508 |
|
case M88K_CR_PSR: /* Processor Status Regoster */ |
509 |
|
if ((cpu->byte_order == EMUL_LITTLE_ENDIAN |
510 |
|
&& !(value & M88K_PSR_BO)) || |
511 |
|
(cpu->byte_order == EMUL_BIG_ENDIAN |
512 |
|
&& (value & M88K_PSR_BO))) { |
513 |
|
fatal("TODO: attempt to change endianness by flipping" |
514 |
|
" the endianness bit in the PSR. How should this" |
515 |
|
" be handled? Aborting.\n"); |
516 |
|
exit(1); |
517 |
|
} |
518 |
|
|
519 |
|
if (!rte && old & M88K_PSR_MODE && !(value & M88K_PSR_MODE)) |
520 |
|
fatal("[ m88k_stcr: WARNING! the PSR_MODE bit is being" |
521 |
|
" cleared; this should be done using the RTE " |
522 |
|
"instruction only, according to the M88100 " |
523 |
|
"manual! Continuing anyway. ]\n"); |
524 |
|
|
525 |
|
if (value & M88K_PSR_MXM) { |
526 |
|
fatal("m88k_stcr: TODO: MXM support\n"); |
527 |
|
exit(1); |
528 |
|
} |
529 |
|
|
530 |
|
if ((old & M88K_PSR_MODE) != (value & M88K_PSR_MODE)) |
531 |
|
cpu->invalidate_translation_caches( |
532 |
|
cpu, 0, INVALIDATE_ALL); |
533 |
|
|
534 |
|
cpu->cd.m88k.cr[cr] = value; |
535 |
|
break; |
536 |
|
|
537 |
|
case M88K_CR_EPSR: |
538 |
|
cpu->cd.m88k.cr[cr] = value; |
539 |
|
break; |
540 |
|
|
541 |
|
case M88K_CR_SXIP: |
542 |
|
case M88K_CR_SNIP: |
543 |
|
case M88K_CR_SFIP: |
544 |
|
cpu->cd.m88k.cr[cr] = value; |
545 |
|
break; |
546 |
|
|
547 |
|
case M88K_CR_SSBR: /* Shadow ScoreBoard Register */ |
548 |
|
if (value & 1) |
549 |
|
fatal("[ m88k_stcr: WARNING! bit 0 non-zero when" |
550 |
|
" writing to SSBR (?) ]\n"); |
551 |
|
cpu->cd.m88k.cr[cr] = value; |
552 |
|
break; |
553 |
|
|
554 |
|
case M88K_CR_VBR: |
555 |
|
if (value & 0x00000fff) |
556 |
|
fatal("[ m88k_stcr: WARNING! bits 0..11 non-zero when" |
557 |
|
" writing to VBR (?) ]\n"); |
558 |
|
cpu->cd.m88k.cr[cr] = value; |
559 |
|
break; |
560 |
|
|
561 |
|
case M88K_CR_DMT0: |
562 |
|
case M88K_CR_DMT1: |
563 |
|
case M88K_CR_DMT2: |
564 |
|
cpu->cd.m88k.cr[cr] = value; |
565 |
|
break; |
566 |
|
|
567 |
|
case M88K_CR_SR0: /* Supervisor Storage Registers 0..3 */ |
568 |
|
case M88K_CR_SR1: |
569 |
|
case M88K_CR_SR2: |
570 |
|
case M88K_CR_SR3: |
571 |
|
cpu->cd.m88k.cr[cr] = value; |
572 |
|
break; |
573 |
|
|
574 |
|
default:fatal("m88k_stcr: UNIMPLEMENTED cr = 0x%02x (%s)\n", |
575 |
|
cr, m88k_cr_name(cpu, cr)); |
576 |
|
exit(1); |
577 |
|
} |
578 |
|
} |
579 |
|
|
580 |
|
|
581 |
|
/* |
582 |
|
* m88k_fstcr(): |
583 |
|
* |
584 |
|
* Write to a floating-point control register. |
585 |
|
*/ |
586 |
|
void m88k_fstcr(struct cpu *cpu, uint32_t value, int fcr) |
587 |
|
{ |
588 |
|
#if 0 |
589 |
|
/* TODO (?) */ |
590 |
|
uint32_t old = cpu->cd.m88k.cr[fcr]; |
591 |
|
|
592 |
|
switch (fcr) { |
593 |
|
default:fatal("m88k_fstcr: UNIMPLEMENTED fcr = 0x%02x (%s)\n", |
594 |
|
fcr, m88k_fcr_name(cpu, fcr)); |
595 |
|
exit(1); |
596 |
|
} |
597 |
|
#else |
598 |
|
cpu->cd.m88k.cr[fcr] = value; |
599 |
|
#endif |
600 |
|
} |
601 |
|
|
602 |
|
|
603 |
|
/* |
604 |
|
* m88k_memory_transaction_debug_dump(): |
605 |
|
* |
606 |
|
* Debug dump of the memory transaction registers of a cpu. |
607 |
|
*/ |
608 |
|
static void m88k_memory_transaction_debug_dump(struct cpu *cpu, int n) |
609 |
|
{ |
610 |
|
uint32_t dmt = cpu->cd.m88k.dmt[n]; |
611 |
|
|
612 |
|
debug("[ DMT%i: ", n); |
613 |
|
if (dmt & DMT_VALID) { |
614 |
|
if (dmt & DMT_BO) |
615 |
|
debug("Little-Endian, "); |
616 |
|
else |
617 |
|
debug("Big-Endian, "); |
618 |
|
if (dmt & DMT_DAS) |
619 |
|
debug("Supervisor, "); |
620 |
|
else |
621 |
|
debug("User, "); |
622 |
|
if (dmt & DMT_DOUB1) |
623 |
|
debug("DOUB1, "); |
624 |
|
if (dmt & DMT_LOCKBAR) |
625 |
|
debug("LOCKBAR, "); |
626 |
|
if (dmt & DMT_WRITE) |
627 |
|
debug("store, "); |
628 |
|
else { |
629 |
|
debug("load.%c(r%i), ", |
630 |
|
dmt & DMT_SIGNED? 's' : 'u', |
631 |
|
DMT_DREGBITS(dmt)); |
632 |
|
} |
633 |
|
debug("bytebits=0x%x ]\n", DMT_ENBITS(dmt)); |
634 |
|
|
635 |
|
debug("[ DMD%i: 0x%08"PRIx32"; ", n, cpu->cd.m88k.dmd[n]); |
636 |
|
debug("DMA%i: 0x%08"PRIx32" ]\n", n, cpu->cd.m88k.dma[n]); |
637 |
|
} else |
638 |
|
debug("not valid ]\n"); |
639 |
|
} |
640 |
|
|
641 |
|
|
642 |
|
/* |
643 |
|
* m88k_exception(): |
644 |
|
* |
645 |
|
* Cause an exception. |
646 |
|
*/ |
647 |
|
void m88k_exception(struct cpu *cpu, int vector, int is_trap) |
648 |
|
{ |
649 |
|
int update_shadow_regs = 1; |
650 |
|
|
651 |
|
debug("[ EXCEPTION 0x%03x: ", vector); |
652 |
|
switch (vector) { |
653 |
|
case M88K_EXCEPTION_RESET: |
654 |
|
debug("RESET"); break; |
655 |
|
case M88K_EXCEPTION_INTERRUPT: |
656 |
|
debug("INTERRUPT"); break; |
657 |
|
case M88K_EXCEPTION_INSTRUCTION_ACCESS: |
658 |
|
debug("INSTRUCTION_ACCESS"); break; |
659 |
|
case M88K_EXCEPTION_DATA_ACCESS: |
660 |
|
debug("DATA_ACCESS"); break; |
661 |
|
case M88K_EXCEPTION_MISALIGNED_ACCESS: |
662 |
|
debug("MISALIGNED_ACCESS"); break; |
663 |
|
case M88K_EXCEPTION_UNIMPLEMENTED_OPCODE: |
664 |
|
debug("UNIMPLEMENTED_OPCODE"); break; |
665 |
|
case M88K_EXCEPTION_PRIVILEGE_VIOLATION: |
666 |
|
debug("PRIVILEGE_VIOLATION"); break; |
667 |
|
case M88K_EXCEPTION_BOUNDS_CHECK_VIOLATION: |
668 |
|
debug("BOUNDS_CHECK_VIOLATION"); break; |
669 |
|
case M88K_EXCEPTION_ILLEGAL_INTEGER_DIVIDE: |
670 |
|
debug("ILLEGAL_INTEGER_DIVIDE"); break; |
671 |
|
case M88K_EXCEPTION_INTEGER_OVERFLOW: |
672 |
|
debug("INTEGER_OVERFLOW"); break; |
673 |
|
case M88K_EXCEPTION_ERROR: |
674 |
|
debug("ERROR"); break; |
675 |
|
case M88K_EXCEPTION_SFU1_PRECISE: |
676 |
|
debug("SFU1_PRECISE"); break; |
677 |
|
case M88K_EXCEPTION_SFU1_IMPRECISE: |
678 |
|
debug("SFU1_IMPRECISE"); break; |
679 |
|
case 0x80: |
680 |
|
debug("syscall, r13=%i", cpu->cd.m88k.r[13]); break; |
681 |
|
case MVMEPROM_VECTOR: |
682 |
|
debug("MVMEPROM_VECTOR"); break; |
683 |
|
default:debug("unknown"); break; |
684 |
|
} |
685 |
|
debug(" ]\n"); |
686 |
|
|
687 |
|
/* Stuff common for all exceptions: */ |
688 |
|
if (cpu->cd.m88k.cr[M88K_CR_PSR] & M88K_PSR_SFRZ) { |
689 |
|
/* |
690 |
|
* Non-trap exceptions when the shadow freeze bit is already |
691 |
|
* set result in an Error exception: |
692 |
|
*/ |
693 |
|
if (!is_trap) { |
694 |
|
vector = M88K_EXCEPTION_ERROR; |
695 |
|
fatal("[ SFRZ already set in PSR => ERROR ]\n"); |
696 |
|
} |
697 |
|
|
698 |
|
update_shadow_regs = 0; |
699 |
|
} else { |
700 |
|
/* Freeze shadow registers, and save the PSR: */ |
701 |
|
|
702 |
|
/* TODO: Shadow registers! */ |
703 |
|
|
704 |
|
cpu->cd.m88k.cr[M88K_CR_EPSR] = cpu->cd.m88k.cr[M88K_CR_PSR]; |
705 |
|
} |
706 |
|
|
707 |
|
|
708 |
|
m88k_stcr(cpu, cpu->cd.m88k.cr[M88K_CR_PSR] |
709 |
|
| M88K_PSR_SFRZ /* Freeze shadow registers, */ |
710 |
|
| M88K_PSR_IND /* disable interrupts, */ |
711 |
|
| M88K_PSR_SFD1 /* disable the floating point unit, */ |
712 |
|
| M88K_PSR_MODE, /* and switch to supervisor mode. */ |
713 |
|
M88K_CR_PSR, 0); |
714 |
|
|
715 |
|
if (update_shadow_regs) { |
716 |
|
cpu->cd.m88k.cr[M88K_CR_SSBR] = 0; |
717 |
|
|
718 |
|
/* SNIP is the address to return to, when executing rte: */ |
719 |
|
cpu->cd.m88k.cr[M88K_CR_SXIP] = cpu->pc | M88K_XIP_V; |
720 |
|
|
721 |
|
if (cpu->delay_slot) { |
722 |
|
cpu->cd.m88k.cr[M88K_CR_SXIP] += 4; |
723 |
|
cpu->cd.m88k.cr[M88K_CR_SNIP] = |
724 |
|
cpu->cd.m88k.delay_target | M88K_NIP_V; |
725 |
|
} else { |
726 |
|
cpu->cd.m88k.cr[M88K_CR_SNIP] = |
727 |
|
(cpu->pc + 4) | M88K_NIP_V; |
728 |
|
} |
729 |
|
|
730 |
|
cpu->cd.m88k.cr[M88K_CR_SFIP] = cpu->cd.m88k.cr[M88K_CR_SNIP]+4; |
731 |
|
|
732 |
|
if (vector == M88K_EXCEPTION_INSTRUCTION_ACCESS) |
733 |
|
cpu->cd.m88k.cr[M88K_CR_SXIP] |= M88K_XIP_E; |
734 |
|
} |
735 |
|
|
736 |
|
cpu->pc = cpu->cd.m88k.cr[M88K_CR_VBR] + 8 * vector; |
737 |
|
|
738 |
|
if (cpu->delay_slot) |
739 |
|
cpu->delay_slot = EXCEPTION_IN_DELAY_SLOT; |
740 |
|
else |
741 |
|
cpu->delay_slot = NOT_DELAYED; |
742 |
|
|
743 |
|
/* Vector-specific handling: */ |
744 |
|
if (vector < M88K_EXCEPTION_USER_TRAPS_START) { |
745 |
|
switch (vector) { |
746 |
|
|
747 |
|
case M88K_EXCEPTION_RESET: |
748 |
|
fatal("[ m88k_exception: reset ]\n"); |
749 |
|
exit(1); |
750 |
|
|
751 |
|
case M88K_EXCEPTION_INSTRUCTION_ACCESS: |
752 |
|
break; |
753 |
|
|
754 |
|
case M88K_EXCEPTION_DATA_ACCESS: |
755 |
|
/* Update the memory transaction registers: */ |
756 |
|
cpu->cd.m88k.cr[M88K_CR_DMT0] = cpu->cd.m88k.dmt[0]; |
757 |
|
cpu->cd.m88k.cr[M88K_CR_DMD0] = cpu->cd.m88k.dmd[0]; |
758 |
|
cpu->cd.m88k.cr[M88K_CR_DMA0] = cpu->cd.m88k.dma[0]; |
759 |
|
cpu->cd.m88k.cr[M88K_CR_DMT1] = cpu->cd.m88k.dmt[1]; |
760 |
|
cpu->cd.m88k.cr[M88K_CR_DMD1] = cpu->cd.m88k.dmd[1]; |
761 |
|
cpu->cd.m88k.cr[M88K_CR_DMA1] = cpu->cd.m88k.dma[1]; |
762 |
|
cpu->cd.m88k.cr[M88K_CR_DMT2] = 0; |
763 |
|
cpu->cd.m88k.cr[M88K_CR_DMD2] = 0; |
764 |
|
cpu->cd.m88k.cr[M88K_CR_DMA2] = 0; |
765 |
|
m88k_memory_transaction_debug_dump(cpu, 0); |
766 |
|
m88k_memory_transaction_debug_dump(cpu, 1); |
767 |
|
break; |
768 |
|
|
769 |
|
default:fatal("m88k_exception(): 0x%x: TODO\n", vector); |
770 |
|
exit(1); |
771 |
|
} |
772 |
|
} |
773 |
|
|
774 |
|
m88k_pc_to_pointers(cpu); |
775 |
|
} |
776 |
|
|
777 |
|
|
778 |
|
/* |
779 |
* m88k_cpu_disassemble_instr(): |
* m88k_cpu_disassemble_instr(): |
780 |
* |
* |
781 |
* Convert an instruction word into human readable format, for instruction |
* Convert an instruction word into human readable format, for instruction |
784 |
* If running is 1, cpu->pc should be the address of the instruction. |
* If running is 1, cpu->pc should be the address of the instruction. |
785 |
* |
* |
786 |
* If running is 0, things that depend on the runtime environment (eg. |
* If running is 0, things that depend on the runtime environment (eg. |
787 |
* register contents) will not be shown, and addr will be used instead of |
* register contents) will not be shown, and dumpaddr will be used instead of |
788 |
* cpu->pc for relative addresses. |
* cpu->pc for relative addresses. |
789 |
*/ |
*/ |
790 |
int m88k_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib, |
int m88k_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib, |
791 |
int running, uint64_t dumpaddr) |
int running, uint64_t dumpaddr) |
792 |
{ |
{ |
793 |
|
int supervisor = cpu->cd.m88k.cr[M88K_CR_PSR] & M88K_PSR_MODE; |
794 |
uint32_t iw; |
uint32_t iw; |
795 |
char *symbol, *mnem = NULL; |
char *symbol, *mnem = NULL; |
796 |
uint64_t offset; |
uint64_t offset; |
797 |
uint32_t op26, op10, op11, d, s1, s2, w5, imm16; |
uint32_t op26, op10, op11, d, s1, s2, w5, cr6, imm16; |
798 |
int32_t d16, d26, simm16; |
int32_t d16, d26, simm16; |
799 |
|
|
800 |
if (running) |
if (running) |
802 |
|
|
803 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
804 |
dumpaddr, &offset); |
dumpaddr, &offset); |
805 |
if (symbol != NULL && offset == 0) |
if (symbol != NULL && offset == 0 && supervisor) |
806 |
debug("<%s>\n", symbol); |
debug("<%s>\n", symbol); |
807 |
|
|
808 |
if (cpu->machine->ncpus > 1 && running) |
if (cpu->machine->ncpus > 1 && running) |
809 |
debug("cpu%i:\t", cpu->cpu_id); |
debug("cpu%i:\t", cpu->cpu_id); |
810 |
|
|
811 |
debug("%08x: ", (int)dumpaddr); |
debug("%c%08"PRIx32": ", |
812 |
|
cpu->cd.m88k.cr[M88K_CR_PSR] & M88K_PSR_MODE? 's' : 'u', |
813 |
|
(uint32_t) dumpaddr); |
814 |
|
|
815 |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
816 |
iw = ib[0] + (ib[1]<<8) + (ib[2]<<16) + (ib[3]<<24); |
iw = ib[0] + (ib[1]<<8) + (ib[2]<<16) + (ib[3]<<24); |
833 |
imm16 = iw & 0xffff; |
imm16 = iw & 0xffff; |
834 |
simm16 = (int16_t) (iw & 0xffff); |
simm16 = (int16_t) (iw & 0xffff); |
835 |
w5 = (iw >> 5) & 0x1f; |
w5 = (iw >> 5) & 0x1f; |
836 |
|
cr6 = (iw >> 5) & 0x3f; |
837 |
d16 = ((int16_t) (iw & 0xffff)) * 4; |
d16 = ((int16_t) (iw & 0xffff)) * 4; |
838 |
d26 = ((int32_t)((iw & 0x03ffffff) << 6)) >> 4; |
d26 = ((int32_t)((iw & 0x03ffffff) << 6)) >> 4; |
839 |
|
|
840 |
switch (op26) { |
switch (op26) { |
841 |
|
|
842 |
case 0x04: /* ld.d */ |
case 0x00: /* xmem.bu */ |
843 |
case 0x05: /* ld */ |
case 0x01: /* xmem */ |
844 |
case 0x06: /* ld.h */ |
case 0x02: /* ld.hu */ |
845 |
case 0x07: /* ld.b */ |
case 0x03: /* ld.bu */ |
846 |
case 0x08: /* st.d */ |
case 0x04: /* ld.d */ |
847 |
case 0x09: /* st */ |
case 0x05: /* ld */ |
848 |
case 0x0a: /* st.h */ |
case 0x06: /* ld.h */ |
849 |
case 0x0b: /* st.b */ |
case 0x07: /* ld.b */ |
850 |
debug("%s%s\tr%i,r%i,%i", |
case 0x08: /* st.d */ |
851 |
op26 >= 0x08? "st" : "ld", |
case 0x09: /* st */ |
852 |
memop[op26 & 3], d, s1, imm16); |
case 0x0a: /* st.h */ |
853 |
|
case 0x0b: /* st.b */ |
854 |
|
if (iw == 0x00000000) { |
855 |
|
debug("-\n"); |
856 |
|
break; |
857 |
|
} |
858 |
|
switch (op26) { |
859 |
|
case 0x00: debug("xmem.bu"); break; |
860 |
|
case 0x01: debug("xmem"); break; |
861 |
|
case 0x02: debug("ld.hu"); break; |
862 |
|
case 0x03: debug("ld.bu"); break; |
863 |
|
default: debug("%s%s", op26 >= 0x08? "st" : "ld", |
864 |
|
memop[op26 & 3]); |
865 |
|
} |
866 |
|
debug("\tr%i,r%i,0x%x", d, s1, imm16); |
867 |
if (running) { |
if (running) { |
868 |
uint32_t tmpaddr = cpu->cd.m88k.r[s1] + imm16; |
uint32_t tmpaddr = cpu->cd.m88k.r[s1] + imm16; |
869 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
870 |
tmpaddr, &offset); |
tmpaddr, &offset); |
871 |
if (symbol != NULL) |
if (symbol != NULL && supervisor) |
872 |
debug("\t; [<%s>]", symbol); |
debug("\t; [<%s>]", symbol); |
873 |
else |
else |
874 |
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
876 |
/* Store: */ |
/* Store: */ |
877 |
debug(" = "); |
debug(" = "); |
878 |
switch (op26 & 3) { |
switch (op26 & 3) { |
879 |
case 0: /* TODO: Endianness!!! */ |
case 0: debug("0x%016"PRIx64, (uint64_t) |
|
debug("0x%016"PRIx64, (uint64_t) |
|
880 |
((((uint64_t) cpu->cd.m88k.r[d]) |
((((uint64_t) cpu->cd.m88k.r[d]) |
881 |
<< 32) + ((uint64_t) |
<< 32) + ((uint64_t) |
882 |
cpu->cd.m88k.r[d+1])) ); |
cpu->cd.m88k.r[d+1])) ); |
884 |
case 1: debug("0x%08"PRIx32, |
case 1: debug("0x%08"PRIx32, |
885 |
(uint32_t) cpu->cd.m88k.r[d]); |
(uint32_t) cpu->cd.m88k.r[d]); |
886 |
break; |
break; |
887 |
case 2: debug("0x%08"PRIx16, |
case 2: debug("0x%04"PRIx16, |
888 |
(uint16_t) cpu->cd.m88k.r[d]); |
(uint16_t) cpu->cd.m88k.r[d]); |
889 |
break; |
break; |
890 |
case 3: debug("0x%08"PRIx8, |
case 3: debug("0x%02"PRIx8, |
891 |
(uint8_t) cpu->cd.m88k.r[d]); |
(uint8_t) cpu->cd.m88k.r[d]); |
892 |
break; |
break; |
893 |
} |
} |
901 |
* sequence is quite common: |
* sequence is quite common: |
902 |
* |
* |
903 |
* or.u rX,r0,A |
* or.u rX,r0,A |
904 |
* st_or_st rY,rX,B |
* st_or_ld rY,rX,B |
905 |
*/ |
*/ |
906 |
|
|
907 |
/* Try loading the instruction before the |
/* Try loading the instruction before the |
921 |
symbol = get_symbol_name( |
symbol = get_symbol_name( |
922 |
&cpu->machine->symbol_context, |
&cpu->machine->symbol_context, |
923 |
tmpaddr, &offset); |
tmpaddr, &offset); |
924 |
if (symbol != NULL) |
if (symbol != NULL && supervisor) |
925 |
debug("\t; [<%s>]", symbol); |
debug("\t; [<%s>]", symbol); |
926 |
else |
else |
927 |
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
949 |
case 0x17: mnem = "or"; break; |
case 0x17: mnem = "or"; break; |
950 |
} |
} |
951 |
debug("%s%s\t", mnem, op26 & 1? ".u" : ""); |
debug("%s%s\t", mnem, op26 & 1? ".u" : ""); |
952 |
debug("r%i,r%i,0x%x\n", d, s1, imm16); |
debug("r%i,r%i,0x%x", d, s1, imm16); |
953 |
|
|
954 |
|
if (op26 == 0x16 && d != M88K_ZERO_REG) { |
955 |
|
/* |
956 |
|
* The following instruction sequence is common: |
957 |
|
* |
958 |
|
* or.u rX,r0,A |
959 |
|
* or rY,rX,B ; rY = AAAABBBB |
960 |
|
*/ |
961 |
|
|
962 |
|
/* Try loading the instruction before the |
963 |
|
current one. */ |
964 |
|
uint32_t iw2 = 0; |
965 |
|
cpu->memory_rw(cpu, cpu->mem, |
966 |
|
dumpaddr - sizeof(uint32_t), (unsigned char *)&iw2, |
967 |
|
sizeof(iw2), MEM_READ, CACHE_INSTRUCTION |
968 |
|
| NO_EXCEPTIONS); |
969 |
|
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
970 |
|
iw2 = LE32_TO_HOST(iw2); |
971 |
|
else |
972 |
|
iw2 = BE32_TO_HOST(iw2); |
973 |
|
if ((iw2 >> 26) == 0x17 && /* or.u */ |
974 |
|
((iw2 >> 21) & 0x1f) == s1) { |
975 |
|
uint32_t tmpaddr = (iw2 << 16) + imm16; |
976 |
|
symbol = get_symbol_name( |
977 |
|
&cpu->machine->symbol_context, |
978 |
|
tmpaddr, &offset); |
979 |
|
debug("\t; "); |
980 |
|
if (symbol != NULL && supervisor) |
981 |
|
debug("<%s>", symbol); |
982 |
|
else |
983 |
|
debug("0x%08"PRIx32, tmpaddr); |
984 |
|
} |
985 |
|
} |
986 |
|
|
987 |
|
debug("\n"); |
988 |
break; |
break; |
989 |
|
|
990 |
case 0x18: /* addu */ |
case 0x18: /* addu */ |
991 |
case 0x19: /* subu */ |
case 0x19: /* subu */ |
992 |
case 0x1a: /* divu */ |
case 0x1a: /* divu */ |
993 |
case 0x1b: /* mulu */ |
case 0x1b: /* mulu */ |
|
switch (op26) { |
|
|
case 0x18: mnem = "addu"; break; |
|
|
case 0x19: mnem = "subu"; break; |
|
|
case 0x1a: mnem = "divu"; break; |
|
|
case 0x1b: mnem = "mulu"; break; |
|
|
} |
|
|
debug("%s\tr%i,r%i,%i\n", mnem, d, s1, imm16); |
|
|
break; |
|
|
|
|
994 |
case 0x1c: /* add */ |
case 0x1c: /* add */ |
995 |
case 0x1d: /* sub */ |
case 0x1d: /* sub */ |
996 |
case 0x1e: /* div */ |
case 0x1e: /* div */ |
997 |
case 0x1f: /* cmp */ |
case 0x1f: /* cmp */ |
998 |
switch (op26) { |
switch (op26) { |
999 |
|
case 0x18: mnem = "addu"; break; |
1000 |
|
case 0x19: mnem = "subu"; break; |
1001 |
|
case 0x1a: mnem = "divu"; break; |
1002 |
|
case 0x1b: mnem = "mulu"; break; |
1003 |
case 0x1c: mnem = "add"; break; |
case 0x1c: mnem = "add"; break; |
1004 |
case 0x1d: mnem = "sub"; break; |
case 0x1d: mnem = "sub"; break; |
1005 |
case 0x1e: mnem = "div"; break; |
case 0x1e: mnem = "div"; break; |
1006 |
case 0x1f: mnem = "cmp"; break; |
case 0x1f: mnem = "cmp"; break; |
1007 |
} |
} |
1008 |
debug("%s\tr%i,r%i,%i\n", mnem, d, s1, simm16); |
debug("%s\tr%i,r%i,%i\n", mnem, d, s1, imm16); |
1009 |
|
break; |
1010 |
|
|
1011 |
|
case 0x20: |
1012 |
|
if ((iw & 0x001ff81f) == 0x00004000) { |
1013 |
|
debug("ldcr\tr%i,%s\n", d, |
1014 |
|
m88k_cr_name(cpu, cr6)); |
1015 |
|
} else if ((iw & 0x001ff81f) == 0x00004800) { |
1016 |
|
debug("fldcr\tr%i,%s\n", d, |
1017 |
|
m88k_fcr_name(cpu, cr6)); |
1018 |
|
} else if ((iw & 0x03e0f800) == 0x00008000) { |
1019 |
|
debug("stcr\tr%i,%s", s1, |
1020 |
|
m88k_cr_name(cpu, cr6)); |
1021 |
|
if (s1 != s2) |
1022 |
|
debug("\t\t; NOTE: weird encoding: " |
1023 |
|
"low 5 bits = 0x%02x", s2); |
1024 |
|
debug("\n"); |
1025 |
|
} else if ((iw & 0x03e0f800) == 0x00008800) { |
1026 |
|
debug("fstcr\tr%i,%s", s1, |
1027 |
|
m88k_fcr_name(cpu, cr6)); |
1028 |
|
if (s1 != s2) |
1029 |
|
debug("\t\t; NOTE: weird encoding: " |
1030 |
|
"low 5 bits = 0x%02x", s2); |
1031 |
|
debug("\n"); |
1032 |
|
} else if ((iw & 0x0000f800) == 0x0000c000) { |
1033 |
|
debug("xcr\tr%i,r%i,%s", d, s1, |
1034 |
|
m88k_cr_name(cpu, cr6)); |
1035 |
|
if (s1 != s2) |
1036 |
|
debug("\t\t; NOTE: weird encoding: " |
1037 |
|
"low 5 bits = 0x%02x", s2); |
1038 |
|
debug("\n"); |
1039 |
|
} else if ((iw & 0x0000f800) == 0x0000c800) { |
1040 |
|
debug("fxcr\tr%i,r%i,%s", d, s1, |
1041 |
|
m88k_fcr_name(cpu, cr6)); |
1042 |
|
if (s1 != s2) |
1043 |
|
debug("\t\t; NOTE: weird encoding: " |
1044 |
|
"low 5 bits = 0x%02x", s2); |
1045 |
|
debug("\n"); |
1046 |
|
} else { |
1047 |
|
debug("UNIMPLEMENTED 0x20\n"); |
1048 |
|
} |
1049 |
break; |
break; |
1050 |
|
|
1051 |
case 0x30: |
case 0x30: |
1058 |
debug("0x%08"PRIx32, (uint32_t) (dumpaddr + d26)); |
debug("0x%08"PRIx32, (uint32_t) (dumpaddr + d26)); |
1059 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
1060 |
dumpaddr + d26, &offset); |
dumpaddr + d26, &offset); |
1061 |
if (symbol != NULL) |
if (symbol != NULL && supervisor) |
1062 |
debug("\t; <%s>", symbol); |
debug("\t; <%s>", symbol); |
1063 |
debug("\n"); |
debug("\n"); |
1064 |
break; |
break; |
1067 |
case 0x35: /* bb0.n */ |
case 0x35: /* bb0.n */ |
1068 |
case 0x36: /* bb1 */ |
case 0x36: /* bb1 */ |
1069 |
case 0x37: /* bb1.n */ |
case 0x37: /* bb1.n */ |
1070 |
debug("bb%s%s\t", |
case 0x3a: /* bcnd */ |
1071 |
op26 >= 0x36? "1" : "0", |
case 0x3b: /* bcnd.n */ |
1072 |
op26 & 1? ".n" : ""); |
switch (op26) { |
1073 |
debug("%i,r%i,0x%08"PRIx32, d, s1, (uint32_t) (dumpaddr + d16)); |
case 0x34: |
1074 |
|
case 0x35: mnem = "bb0"; break; |
1075 |
|
case 0x36: |
1076 |
|
case 0x37: mnem = "bb1"; break; |
1077 |
|
case 0x3a: |
1078 |
|
case 0x3b: mnem = "bcnd"; break; |
1079 |
|
} |
1080 |
|
debug("%s%s\t", mnem, op26 & 1? ".n" : ""); |
1081 |
|
if (op26 == 0x3a || op26 == 0x3b) { |
1082 |
|
/* Attempt to decode bcnd condition: */ |
1083 |
|
switch (d) { |
1084 |
|
case 0x1: debug("gt0"); break; |
1085 |
|
case 0x2: debug("eq0"); break; |
1086 |
|
case 0x3: debug("ge0"); break; |
1087 |
|
case 0xc: debug("lt0"); break; |
1088 |
|
case 0xd: debug("ne0"); break; |
1089 |
|
case 0xe: debug("le0"); break; |
1090 |
|
default: debug("%i", d); |
1091 |
|
} |
1092 |
|
} else { |
1093 |
|
debug("%i", d); |
1094 |
|
} |
1095 |
|
debug(",r%i,0x%08"PRIx32, s1, (uint32_t) (dumpaddr + d16)); |
1096 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
1097 |
dumpaddr + d16, &offset); |
dumpaddr + d16, &offset); |
1098 |
if (symbol != NULL) |
if (symbol != NULL && supervisor) |
1099 |
debug("\t; <%s>", symbol); |
debug("\t; <%s>", symbol); |
1100 |
debug("\n"); |
debug("\n"); |
1101 |
break; |
break; |
1102 |
|
|
1103 |
|
case 0x3c: |
1104 |
|
if ((iw & 0x0000f000)==0x1000 || (iw & 0x0000f000)==0x2000) { |
1105 |
|
int scale = 0; |
1106 |
|
|
1107 |
|
/* Load/store: */ |
1108 |
|
debug("%s", (iw & 0x0000f000) == 0x1000? "ld" : "st"); |
1109 |
|
switch (iw & 0x00000c00) { |
1110 |
|
case 0x000: scale = 8; debug(".d"); break; |
1111 |
|
case 0x400: scale = 4; break; |
1112 |
|
case 0x800: debug(".x"); break; |
1113 |
|
default: debug(".UNIMPLEMENTED"); |
1114 |
|
} |
1115 |
|
if (iw & 0x100) |
1116 |
|
debug(".usr"); |
1117 |
|
if (iw & 0x80) |
1118 |
|
debug(".wt"); |
1119 |
|
debug("\tr%i,r%i", d, s1); |
1120 |
|
if (iw & 0x200) |
1121 |
|
debug("[r%i]", s2); |
1122 |
|
else |
1123 |
|
debug(",r%i", s2); |
1124 |
|
|
1125 |
|
if (running && scale >= 1) { |
1126 |
|
uint32_t tmpaddr = cpu->cd.m88k.r[s1]; |
1127 |
|
if (iw & 0x200) |
1128 |
|
tmpaddr += scale * cpu->cd.m88k.r[s2]; |
1129 |
|
else |
1130 |
|
tmpaddr += cpu->cd.m88k.r[s2]; |
1131 |
|
symbol = get_symbol_name(&cpu->machine-> |
1132 |
|
symbol_context, tmpaddr, &offset); |
1133 |
|
if (symbol != NULL && supervisor) |
1134 |
|
debug("\t; [<%s>]", symbol); |
1135 |
|
else |
1136 |
|
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
1137 |
|
} |
1138 |
|
|
1139 |
|
debug("\n"); |
1140 |
|
} else switch (op10) { |
1141 |
|
case 0x20: /* clr */ |
1142 |
|
case 0x22: /* set */ |
1143 |
|
case 0x24: /* ext */ |
1144 |
|
case 0x26: /* extu */ |
1145 |
|
case 0x28: /* mak */ |
1146 |
|
case 0x2a: /* rot */ |
1147 |
|
switch (op10) { |
1148 |
|
case 0x20: mnem = "clr"; break; |
1149 |
|
case 0x22: mnem = "set"; break; |
1150 |
|
case 0x24: mnem = "ext"; break; |
1151 |
|
case 0x26: mnem = "extu"; break; |
1152 |
|
case 0x28: mnem = "mak"; break; |
1153 |
|
case 0x2a: mnem = "rot"; break; |
1154 |
|
} |
1155 |
|
debug("%s\tr%i,r%i,", mnem, d, s1); |
1156 |
|
/* Don't include w5 for the rot instruction: */ |
1157 |
|
if (op10 != 0x2a) |
1158 |
|
debug("%i", w5); |
1159 |
|
/* Note: o5 = s2: */ |
1160 |
|
debug("<%i>\n", s2); |
1161 |
|
break; |
1162 |
|
case 0x34: /* tb0 */ |
1163 |
|
case 0x36: /* tb1 */ |
1164 |
|
switch (op10) { |
1165 |
|
case 0x34: mnem = "tb0"; break; |
1166 |
|
case 0x36: mnem = "tb1"; break; |
1167 |
|
} |
1168 |
|
debug("%s\t%i,r%i,0x%x\n", mnem, d, s1, iw & 0x1ff); |
1169 |
|
break; |
1170 |
|
default:debug("UNIMPLEMENTED 0x3c, op10=0x%02x\n", op10); |
1171 |
|
} |
1172 |
|
break; |
1173 |
|
|
1174 |
case 0x3d: |
case 0x3d: |
1175 |
if ((iw & 0x03fff3e0) == 0x0000c000) { |
if ((iw & 0xf000) <= 0x3fff) { |
1176 |
debug("%s%s\t(r%i)\n", |
int scale = 0; |
1177 |
|
|
1178 |
|
/* Load, Store, xmem, and lda: */ |
1179 |
|
switch (iw & 0xf000) { |
1180 |
|
case 0x2000: debug("st"); break; |
1181 |
|
case 0x3000: debug("lda"); break; |
1182 |
|
default: if ((iw & 0xf800) >= 0x0800) |
1183 |
|
debug("ld"); |
1184 |
|
else |
1185 |
|
debug("xmem"); |
1186 |
|
} |
1187 |
|
if ((iw & 0xf000) >= 0x1000) { |
1188 |
|
/* ld, st, lda */ |
1189 |
|
scale = 1 << (3 - ((iw >> 10) & 3)); |
1190 |
|
debug("%s", memop[(iw >> 10) & 3]); |
1191 |
|
} else if ((iw & 0xf800) == 0x0000) { |
1192 |
|
/* xmem */ |
1193 |
|
if (iw & 0x400) |
1194 |
|
scale = 4; |
1195 |
|
else |
1196 |
|
debug(".bu"), scale = 1; |
1197 |
|
} else { |
1198 |
|
/* ld */ |
1199 |
|
if ((iw & 0xf00) < 0xc00) |
1200 |
|
debug(".hu"), scale = 2; |
1201 |
|
else |
1202 |
|
debug(".bu"), scale = 1; |
1203 |
|
} |
1204 |
|
if (iw & 0x100) |
1205 |
|
debug(".usr"); |
1206 |
|
if (iw & 0x80) |
1207 |
|
debug(".wt"); |
1208 |
|
debug("\tr%i,r%i", d, s1); |
1209 |
|
if (iw & 0x200) |
1210 |
|
debug("[r%i]", s2); |
1211 |
|
else |
1212 |
|
debug(",r%i", s2); |
1213 |
|
|
1214 |
|
if (running && scale >= 1) { |
1215 |
|
uint32_t tmpaddr = cpu->cd.m88k.r[s1]; |
1216 |
|
if (iw & 0x200) |
1217 |
|
tmpaddr += scale * cpu->cd.m88k.r[s2]; |
1218 |
|
else |
1219 |
|
tmpaddr += cpu->cd.m88k.r[s2]; |
1220 |
|
symbol = get_symbol_name(&cpu->machine-> |
1221 |
|
symbol_context, tmpaddr, &offset); |
1222 |
|
if (symbol != NULL && supervisor) |
1223 |
|
debug("\t; [<%s>]", symbol); |
1224 |
|
else |
1225 |
|
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
1226 |
|
} |
1227 |
|
|
1228 |
|
debug("\n"); |
1229 |
|
} else switch ((iw >> 8) & 0xff) { |
1230 |
|
case 0x40: /* and */ |
1231 |
|
case 0x44: /* and.c */ |
1232 |
|
case 0x50: /* xor */ |
1233 |
|
case 0x54: /* xor.c */ |
1234 |
|
case 0x58: /* or */ |
1235 |
|
case 0x5c: /* or.c */ |
1236 |
|
case 0x60: /* addu */ |
1237 |
|
case 0x61: /* addu.co */ |
1238 |
|
case 0x62: /* addu.ci */ |
1239 |
|
case 0x63: /* addu.cio */ |
1240 |
|
case 0x64: /* subu */ |
1241 |
|
case 0x65: /* subu.co */ |
1242 |
|
case 0x66: /* subu.ci */ |
1243 |
|
case 0x67: /* subu.cio */ |
1244 |
|
case 0x68: /* divu */ |
1245 |
|
case 0x69: /* divu.d */ |
1246 |
|
case 0x6c: /* mul */ |
1247 |
|
case 0x6d: /* mulu.d */ |
1248 |
|
case 0x6e: /* muls */ |
1249 |
|
case 0x70: /* add */ |
1250 |
|
case 0x71: /* add.co */ |
1251 |
|
case 0x72: /* add.ci */ |
1252 |
|
case 0x73: /* add.cio */ |
1253 |
|
case 0x74: /* sub */ |
1254 |
|
case 0x75: /* sub.co */ |
1255 |
|
case 0x76: /* sub.ci */ |
1256 |
|
case 0x77: /* sub.cio */ |
1257 |
|
case 0x78: /* div */ |
1258 |
|
case 0x7c: /* cmp */ |
1259 |
|
case 0x80: /* clr */ |
1260 |
|
case 0x88: /* set */ |
1261 |
|
case 0x90: /* ext */ |
1262 |
|
case 0x98: /* extu */ |
1263 |
|
case 0xa0: /* mak */ |
1264 |
|
case 0xa8: /* rot */ |
1265 |
|
/* Three-register opcodes: */ |
1266 |
|
switch ((iw >> 8) & 0xff) { |
1267 |
|
case 0x40: mnem = "and"; break; |
1268 |
|
case 0x44: mnem = "and.c"; break; |
1269 |
|
case 0x50: mnem = "xor"; break; |
1270 |
|
case 0x54: mnem = "xor.c"; break; |
1271 |
|
case 0x58: mnem = "or"; break; |
1272 |
|
case 0x5c: mnem = "or.c"; break; |
1273 |
|
case 0x60: mnem = "addu"; break; |
1274 |
|
case 0x61: mnem = "addu.co"; break; |
1275 |
|
case 0x62: mnem = "addu.ci"; break; |
1276 |
|
case 0x63: mnem = "addu.cio"; break; |
1277 |
|
case 0x64: mnem = "subu"; break; |
1278 |
|
case 0x65: mnem = "subu.co"; break; |
1279 |
|
case 0x66: mnem = "subu.ci"; break; |
1280 |
|
case 0x67: mnem = "subu.cio"; break; |
1281 |
|
case 0x68: mnem = "divu"; break; |
1282 |
|
case 0x69: mnem = "divu.d"; break; |
1283 |
|
case 0x6c: mnem = "mul"; break; |
1284 |
|
case 0x6d: mnem = "mulu.d"; break; |
1285 |
|
case 0x6e: mnem = "muls"; break; |
1286 |
|
case 0x70: mnem = "add"; break; |
1287 |
|
case 0x71: mnem = "add.co"; break; |
1288 |
|
case 0x72: mnem = "add.ci"; break; |
1289 |
|
case 0x73: mnem = "add.cio"; break; |
1290 |
|
case 0x74: mnem = "sub"; break; |
1291 |
|
case 0x75: mnem = "sub.co"; break; |
1292 |
|
case 0x76: mnem = "sub.ci"; break; |
1293 |
|
case 0x77: mnem = "sub.cio"; break; |
1294 |
|
case 0x78: mnem = "div"; break; |
1295 |
|
case 0x7c: mnem = "cmp"; break; |
1296 |
|
case 0x80: mnem = "clr"; break; |
1297 |
|
case 0x88: mnem = "set"; break; |
1298 |
|
case 0x90: mnem = "ext"; break; |
1299 |
|
case 0x98: mnem = "extu"; break; |
1300 |
|
case 0xa0: mnem = "mak"; break; |
1301 |
|
case 0xa8: mnem = "rot"; break; |
1302 |
|
} |
1303 |
|
debug("%s\tr%i,r%i,r%i\n", mnem, d, s1, s2); |
1304 |
|
break; |
1305 |
|
case 0xc0: /* jmp */ |
1306 |
|
case 0xc4: /* jmp.n */ |
1307 |
|
case 0xc8: /* jsr */ |
1308 |
|
case 0xcc: /* jsr.n */ |
1309 |
|
debug("%s%s\t(r%i)", |
1310 |
op11 & 1? "jsr" : "jmp", |
op11 & 1? "jsr" : "jmp", |
1311 |
iw & 0x400? ".n" : "", |
iw & 0x400? ".n" : "", |
1312 |
s2); |
s2); |
1314 |
uint32_t tmpaddr = cpu->cd.m88k.r[s2]; |
uint32_t tmpaddr = cpu->cd.m88k.r[s2]; |
1315 |
symbol = get_symbol_name(&cpu->machine-> |
symbol = get_symbol_name(&cpu->machine-> |
1316 |
symbol_context, tmpaddr, &offset); |
symbol_context, tmpaddr, &offset); |
1317 |
debug("\t; "); |
debug("\t\t; "); |
1318 |
if (symbol != NULL) |
if (symbol != NULL && supervisor) |
1319 |
debug("<%s>", symbol); |
debug("<%s>", symbol); |
1320 |
else |
else |
1321 |
debug("0x%08"PRIx32, tmpaddr); |
debug("0x%08"PRIx32, tmpaddr); |
1322 |
} |
} |
1323 |
} else if ((iw & 0x0000ffe0) == 0x00000000) { |
debug("\n"); |
1324 |
debug("xmem\tr%i,r%i,r%i\n", d, s1, s2); |
break; |
1325 |
} else { |
case 0xe8: /* ff1 */ |
1326 |
debug("UNIMPLEMENTED 0x3d\n"); |
case 0xec: /* ff0 */ |
1327 |
|
debug("%s\tr%i,r%i\n", |
1328 |
|
((iw >> 8) & 0xff) == 0xe8 ? "ff1" : "ff0", d, s2); |
1329 |
|
break; |
1330 |
|
case 0xf8: /* tbnd */ |
1331 |
|
debug("tbnd\tr%i,r%i\n", s1, s2); |
1332 |
|
break; |
1333 |
|
case 0xfc: |
1334 |
|
switch (iw & 0xff) { |
1335 |
|
case 0x00: |
1336 |
|
debug("rte\n"); |
1337 |
|
break; |
1338 |
|
case 0x01: |
1339 |
|
case 0x02: |
1340 |
|
case 0x03: |
1341 |
|
debug("illop%i\n", iw & 0xff); |
1342 |
|
break; |
1343 |
|
case (M88K_PROM_INSTR & 0xff): |
1344 |
|
debug("gxemul_prom_call\n"); |
1345 |
|
break; |
1346 |
|
default:debug("UNIMPLEMENTED 0x3d,0xfc: 0x%02x\n", |
1347 |
|
iw & 0xff); |
1348 |
|
} |
1349 |
|
break; |
1350 |
|
default:debug("UNIMPLEMENTED 0x3d, opbyte = 0x%02x\n", |
1351 |
|
(iw >> 8) & 0xff); |
1352 |
} |
} |
1353 |
break; |
break; |
1354 |
|
|
1355 |
default:debug("UNIMPLEMENTED\n"); |
case 0x3e: |
1356 |
|
debug("tbnd\tr%i,0x%x\n", s1, imm16); |
1357 |
|
break; |
1358 |
|
|
1359 |
|
default:debug("UNIMPLEMENTED op26=0x%02x\n", op26); |
1360 |
} |
} |
1361 |
|
|
1362 |
return sizeof(uint32_t); |
return sizeof(uint32_t); |