726bbb3e |
1 | // 187 blocks, 12072 bytes |
2 | // 14 IRAM blocks |
3 | |
4 | #include "../../PicoInt.h" |
e807ac75 |
5 | #include "compiler.h" |
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6 | |
892b1dd2 |
7 | static unsigned int *block_table[0x5090/2]; |
8 | static unsigned int *block_table_iram[15][0x800/2]; |
892b1dd2 |
9 | static unsigned int *tcache_ptr = NULL; |
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10 | |
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11 | static int nblocks = 0; |
df143b36 |
12 | static int iram_context = 0; |
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13 | |
5d817c91 |
14 | #ifndef ARM |
a6fb500b |
15 | #define DUMP_BLOCK 0x240a |
5d817c91 |
16 | unsigned int tcache[512*1024]; |
17 | void regfile_load(void){} |
18 | void regfile_store(void){} |
19 | #endif |
20 | |
726bbb3e |
21 | #define EMBED_INTERPRETER |
22 | #define ssp1601_reset ssp1601_reset_local |
23 | #define ssp1601_run ssp1601_run_local |
24 | |
5c129565 |
25 | #define GET_PC() rPC |
26 | #define GET_PPC_OFFS() (GET_PC()*2 - 2) |
d274c33b |
27 | #define SET_PC(d) { rPC = d; } /* must return to dispatcher after this */ |
726bbb3e |
28 | //#define GET_PC() (PC - (unsigned short *)svp->iram_rom) |
29 | //#define GET_PPC_OFFS() ((unsigned int)PC - (unsigned int)svp->iram_rom - 2) |
30 | //#define SET_PC(d) PC = (unsigned short *)svp->iram_rom + d |
31 | |
32 | #include "ssp16.c" |
5c129565 |
33 | #include "gen_arm.c" |
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34 | |
35 | // ----------------------------------------------------- |
36 | |
892b1dd2 |
37 | // ld d, s |
38 | static void op00(unsigned int op, unsigned int imm) |
39 | { |
40 | unsigned int tmpv; |
259ed0ea |
41 | PC = ((unsigned short *)(void *)&op) + 1; /* FIXME: needed for interpreter */ |
892b1dd2 |
42 | if (op == 0) return; // nop |
43 | if (op == ((SSP_A<<4)|SSP_P)) { // A <- P |
44 | // not sure. MAME claims that only hi word is transfered. |
45 | read_P(); // update P |
46 | rA32 = rP.v; |
47 | } |
48 | else |
49 | { |
50 | tmpv = REG_READ(op & 0x0f); |
51 | REG_WRITE((op & 0xf0) >> 4, tmpv); |
52 | } |
53 | } |
54 | |
55 | // ld d, (ri) |
56 | static void op01(unsigned int op, unsigned int imm) |
57 | { |
58 | unsigned int tmpv; |
59 | tmpv = ptr1_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv); |
60 | } |
61 | |
62 | // ld (ri), s |
63 | static void op02(unsigned int op, unsigned int imm) |
64 | { |
65 | unsigned int tmpv; |
66 | tmpv = REG_READ((op & 0xf0) >> 4); ptr1_write(op, tmpv); |
67 | } |
68 | |
69 | // ldi d, imm |
70 | static void op04(unsigned int op, unsigned int imm) |
71 | { |
72 | REG_WRITE((op & 0xf0) >> 4, imm); |
73 | } |
74 | |
75 | // ld d, ((ri)) |
76 | static void op05(unsigned int op, unsigned int imm) |
77 | { |
78 | unsigned int tmpv; |
79 | tmpv = ptr2_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv); |
80 | } |
81 | |
82 | // ldi (ri), imm |
83 | static void op06(unsigned int op, unsigned int imm) |
84 | { |
85 | ptr1_write(op, imm); |
86 | } |
87 | |
88 | // ld adr, a |
89 | static void op07(unsigned int op, unsigned int imm) |
90 | { |
91 | ssp->RAM[op & 0x1ff] = rA; |
92 | } |
93 | |
94 | // ld d, ri |
95 | static void op09(unsigned int op, unsigned int imm) |
96 | { |
97 | unsigned int tmpv; |
98 | tmpv = rIJ[(op&3)|((op>>6)&4)]; REG_WRITE((op & 0xf0) >> 4, tmpv); |
99 | } |
100 | |
101 | // ld ri, s |
102 | static void op0a(unsigned int op, unsigned int imm) |
103 | { |
104 | rIJ[(op&3)|((op>>6)&4)] = REG_READ((op & 0xf0) >> 4); |
105 | } |
106 | |
107 | // ldi ri, simm (also op0d op0e op0f) |
108 | static void op0c(unsigned int op, unsigned int imm) |
109 | { |
110 | rIJ[(op>>8)&7] = op; |
111 | } |
112 | |
113 | // call cond, addr |
114 | static void op24(unsigned int op, unsigned int imm) |
115 | { |
116 | int cond = 0; |
117 | do { |
118 | COND_CHECK |
259ed0ea |
119 | if (cond) { int new_PC = imm; write_STACK(GET_PC()); SET_PC(new_PC); } |
892b1dd2 |
120 | } |
121 | while (0); |
122 | } |
123 | |
124 | // ld d, (a) |
125 | static void op25(unsigned int op, unsigned int imm) |
126 | { |
127 | unsigned int tmpv; |
128 | tmpv = ((unsigned short *)svp->iram_rom)[rA]; REG_WRITE((op & 0xf0) >> 4, tmpv); |
129 | } |
130 | |
131 | // bra cond, addr |
132 | static void op26(unsigned int op, unsigned int imm) |
133 | { |
134 | do |
135 | { |
136 | int cond = 0; |
137 | COND_CHECK |
259ed0ea |
138 | if (cond) SET_PC(imm); |
892b1dd2 |
139 | } |
259ed0ea |
140 | while (0); |
892b1dd2 |
141 | } |
142 | |
143 | // mod cond, op |
144 | static void op48(unsigned int op, unsigned int imm) |
145 | { |
146 | do |
147 | { |
148 | int cond = 0; |
149 | COND_CHECK |
150 | if (cond) { |
151 | switch (op & 7) { |
152 | case 2: rA32 = (signed int)rA32 >> 1; break; // shr (arithmetic) |
153 | case 3: rA32 <<= 1; break; // shl |
154 | case 6: rA32 = -(signed int)rA32; break; // neg |
155 | case 7: if ((int)rA32 < 0) rA32 = -(signed int)rA32; break; // abs |
156 | default: elprintf(EL_SVP|EL_ANOMALY, "ssp FIXME: unhandled mod %i @ %04x", |
157 | op&7, GET_PPC_OFFS()); |
158 | } |
159 | UPD_ACC_ZN // ? |
160 | } |
161 | } |
162 | while(0); |
163 | } |
164 | |
165 | // mpys? |
166 | static void op1b(unsigned int op, unsigned int imm) |
167 | { |
168 | read_P(); // update P |
169 | rA32 -= rP.v; // maybe only upper word? |
170 | UPD_ACC_ZN // there checking flags after this |
171 | rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?) |
172 | rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj |
173 | } |
174 | |
175 | // mpya (rj), (ri), b |
176 | static void op4b(unsigned int op, unsigned int imm) |
177 | { |
178 | read_P(); // update P |
179 | rA32 += rP.v; // confirmed to be 32bit |
180 | UPD_ACC_ZN // ? |
181 | rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?) |
182 | rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj |
183 | } |
184 | |
185 | // mld (rj), (ri), b |
186 | static void op5b(unsigned int op, unsigned int imm) |
187 | { |
188 | rA32 = 0; |
189 | rST &= 0x0fff; // ? |
190 | rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?) |
191 | rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj |
192 | } |
193 | |
194 | // OP a, s |
195 | static void op10(unsigned int op, unsigned int imm) |
196 | { |
197 | do |
198 | { |
199 | unsigned int tmpv; |
200 | OP_CHECK32(OP_SUBA32); tmpv = REG_READ(op & 0x0f); OP_SUBA(tmpv); |
201 | } |
202 | while(0); |
203 | } |
204 | |
205 | static void op30(unsigned int op, unsigned int imm) |
206 | { |
207 | do |
208 | { |
209 | unsigned int tmpv; |
210 | OP_CHECK32(OP_CMPA32); tmpv = REG_READ(op & 0x0f); OP_CMPA(tmpv); |
211 | } |
212 | while(0); |
213 | } |
214 | |
215 | static void op40(unsigned int op, unsigned int imm) |
216 | { |
217 | do |
218 | { |
219 | unsigned int tmpv; |
220 | OP_CHECK32(OP_ADDA32); tmpv = REG_READ(op & 0x0f); OP_ADDA(tmpv); |
221 | } |
222 | while(0); |
223 | } |
224 | |
225 | static void op50(unsigned int op, unsigned int imm) |
226 | { |
227 | do |
228 | { |
229 | unsigned int tmpv; |
230 | OP_CHECK32(OP_ANDA32); tmpv = REG_READ(op & 0x0f); OP_ANDA(tmpv); |
231 | } |
232 | while(0); |
233 | } |
234 | |
235 | static void op60(unsigned int op, unsigned int imm) |
236 | { |
237 | do |
238 | { |
239 | unsigned int tmpv; |
240 | OP_CHECK32(OP_ORA32 ); tmpv = REG_READ(op & 0x0f); OP_ORA (tmpv); |
241 | } |
242 | while(0); |
243 | } |
244 | |
245 | static void op70(unsigned int op, unsigned int imm) |
246 | { |
247 | do |
248 | { |
249 | unsigned int tmpv; |
250 | OP_CHECK32(OP_EORA32); tmpv = REG_READ(op & 0x0f); OP_EORA(tmpv); |
251 | } |
252 | while(0); |
253 | } |
254 | |
255 | // OP a, (ri) |
256 | static void op11(unsigned int op, unsigned int imm) |
257 | { |
258 | unsigned int tmpv; |
259 | tmpv = ptr1_read(op); OP_SUBA(tmpv); |
260 | } |
261 | |
262 | static void op31(unsigned int op, unsigned int imm) |
263 | { |
264 | unsigned int tmpv; |
265 | tmpv = ptr1_read(op); OP_CMPA(tmpv); |
266 | } |
267 | |
268 | static void op41(unsigned int op, unsigned int imm) |
269 | { |
270 | unsigned int tmpv; |
271 | tmpv = ptr1_read(op); OP_ADDA(tmpv); |
272 | } |
273 | |
274 | static void op51(unsigned int op, unsigned int imm) |
275 | { |
276 | unsigned int tmpv; |
277 | tmpv = ptr1_read(op); OP_ANDA(tmpv); |
278 | } |
279 | |
280 | static void op61(unsigned int op, unsigned int imm) |
281 | { |
282 | unsigned int tmpv; |
283 | tmpv = ptr1_read(op); OP_ORA (tmpv); |
284 | } |
285 | |
286 | static void op71(unsigned int op, unsigned int imm) |
287 | { |
288 | unsigned int tmpv; |
289 | tmpv = ptr1_read(op); OP_EORA(tmpv); |
290 | } |
291 | |
292 | // OP a, adr |
293 | static void op03(unsigned int op, unsigned int imm) |
294 | { |
295 | unsigned int tmpv; |
296 | tmpv = ssp->RAM[op & 0x1ff]; OP_LDA (tmpv); |
297 | } |
298 | |
299 | static void op13(unsigned int op, unsigned int imm) |
300 | { |
301 | unsigned int tmpv; |
302 | tmpv = ssp->RAM[op & 0x1ff]; OP_SUBA(tmpv); |
303 | } |
304 | |
305 | static void op33(unsigned int op, unsigned int imm) |
306 | { |
307 | unsigned int tmpv; |
308 | tmpv = ssp->RAM[op & 0x1ff]; OP_CMPA(tmpv); |
309 | } |
310 | |
311 | static void op43(unsigned int op, unsigned int imm) |
312 | { |
313 | unsigned int tmpv; |
314 | tmpv = ssp->RAM[op & 0x1ff]; OP_ADDA(tmpv); |
315 | } |
316 | |
317 | static void op53(unsigned int op, unsigned int imm) |
318 | { |
319 | unsigned int tmpv; |
320 | tmpv = ssp->RAM[op & 0x1ff]; OP_ANDA(tmpv); |
321 | } |
322 | |
323 | static void op63(unsigned int op, unsigned int imm) |
324 | { |
325 | unsigned int tmpv; |
326 | tmpv = ssp->RAM[op & 0x1ff]; OP_ORA (tmpv); |
327 | } |
328 | |
329 | static void op73(unsigned int op, unsigned int imm) |
330 | { |
331 | unsigned int tmpv; |
332 | tmpv = ssp->RAM[op & 0x1ff]; OP_EORA(tmpv); |
333 | } |
334 | |
335 | // OP a, imm |
336 | static void op14(unsigned int op, unsigned int imm) |
337 | { |
338 | OP_SUBA(imm); |
339 | } |
340 | |
341 | static void op34(unsigned int op, unsigned int imm) |
342 | { |
343 | OP_CMPA(imm); |
344 | } |
345 | |
346 | static void op44(unsigned int op, unsigned int imm) |
347 | { |
348 | OP_ADDA(imm); |
349 | } |
350 | |
351 | static void op54(unsigned int op, unsigned int imm) |
352 | { |
353 | OP_ANDA(imm); |
354 | } |
355 | |
356 | static void op64(unsigned int op, unsigned int imm) |
357 | { |
358 | OP_ORA (imm); |
359 | } |
360 | |
361 | static void op74(unsigned int op, unsigned int imm) |
362 | { |
363 | OP_EORA(imm); |
364 | } |
365 | |
366 | // OP a, ((ri)) |
367 | static void op15(unsigned int op, unsigned int imm) |
368 | { |
369 | unsigned int tmpv; |
370 | tmpv = ptr2_read(op); OP_SUBA(tmpv); |
371 | } |
372 | |
373 | static void op35(unsigned int op, unsigned int imm) |
374 | { |
375 | unsigned int tmpv; |
376 | tmpv = ptr2_read(op); OP_CMPA(tmpv); |
377 | } |
378 | |
379 | static void op45(unsigned int op, unsigned int imm) |
380 | { |
381 | unsigned int tmpv; |
382 | tmpv = ptr2_read(op); OP_ADDA(tmpv); |
383 | } |
384 | |
385 | static void op55(unsigned int op, unsigned int imm) |
386 | { |
387 | unsigned int tmpv; |
388 | tmpv = ptr2_read(op); OP_ANDA(tmpv); |
389 | } |
390 | |
391 | static void op65(unsigned int op, unsigned int imm) |
392 | { |
393 | unsigned int tmpv; |
394 | tmpv = ptr2_read(op); OP_ORA (tmpv); |
395 | } |
396 | |
397 | static void op75(unsigned int op, unsigned int imm) |
398 | { |
399 | unsigned int tmpv; |
400 | tmpv = ptr2_read(op); OP_EORA(tmpv); |
401 | } |
402 | |
403 | // OP a, ri |
404 | static void op19(unsigned int op, unsigned int imm) |
405 | { |
406 | unsigned int tmpv; |
407 | tmpv = rIJ[IJind]; OP_SUBA(tmpv); |
408 | } |
409 | |
410 | static void op39(unsigned int op, unsigned int imm) |
411 | { |
412 | unsigned int tmpv; |
413 | tmpv = rIJ[IJind]; OP_CMPA(tmpv); |
414 | } |
415 | |
416 | static void op49(unsigned int op, unsigned int imm) |
417 | { |
418 | unsigned int tmpv; |
419 | tmpv = rIJ[IJind]; OP_ADDA(tmpv); |
420 | } |
421 | |
422 | static void op59(unsigned int op, unsigned int imm) |
423 | { |
424 | unsigned int tmpv; |
425 | tmpv = rIJ[IJind]; OP_ANDA(tmpv); |
426 | } |
427 | |
428 | static void op69(unsigned int op, unsigned int imm) |
429 | { |
430 | unsigned int tmpv; |
431 | tmpv = rIJ[IJind]; OP_ORA (tmpv); |
432 | } |
433 | |
434 | static void op79(unsigned int op, unsigned int imm) |
435 | { |
436 | unsigned int tmpv; |
437 | tmpv = rIJ[IJind]; OP_EORA(tmpv); |
438 | } |
439 | |
440 | // OP simm |
441 | static void op1c(unsigned int op, unsigned int imm) |
442 | { |
443 | OP_SUBA(op & 0xff); |
444 | } |
445 | |
446 | static void op3c(unsigned int op, unsigned int imm) |
447 | { |
448 | OP_CMPA(op & 0xff); |
449 | } |
450 | |
451 | static void op4c(unsigned int op, unsigned int imm) |
452 | { |
453 | OP_ADDA(op & 0xff); |
454 | } |
455 | |
456 | static void op5c(unsigned int op, unsigned int imm) |
457 | { |
458 | OP_ANDA(op & 0xff); |
459 | } |
460 | |
461 | static void op6c(unsigned int op, unsigned int imm) |
462 | { |
463 | OP_ORA (op & 0xff); |
464 | } |
465 | |
466 | static void op7c(unsigned int op, unsigned int imm) |
467 | { |
468 | OP_EORA(op & 0xff); |
469 | } |
470 | |
471 | typedef void (in_func)(unsigned int op, unsigned int imm); |
472 | |
473 | static in_func *in_funcs[0x80] = |
474 | { |
475 | op00, op01, op02, op03, op04, op05, op06, op07, |
476 | NULL, op09, op0a, NULL, op0c, op0c, op0c, op0c, |
477 | op10, op11, NULL, op13, op14, op15, NULL, NULL, |
478 | NULL, op19, NULL, op1b, op1c, NULL, NULL, NULL, |
479 | NULL, NULL, NULL, NULL, op24, op25, op26, NULL, |
480 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
481 | op30, op31, NULL, op33, op34, op35, NULL, NULL, |
482 | NULL, op39, NULL, NULL, op3c, NULL, NULL, NULL, |
483 | op40, op41, NULL, op43, op44, op45, NULL, NULL, |
484 | op48, op49, NULL, op4b, op4c, NULL, NULL, NULL, |
485 | op50, op51, NULL, op53, op54, op55, NULL, NULL, |
486 | NULL, op59, NULL, op5b, op5c, NULL, NULL, NULL, |
487 | op60, op61, NULL, op63, op64, op65, NULL, NULL, |
488 | NULL, op69, NULL, NULL, op6c, NULL, NULL, NULL, |
489 | op70, op71, NULL, op73, op74, op75, NULL, NULL, |
490 | NULL, op79, NULL, NULL, op7c, NULL, NULL, NULL, |
491 | }; |
492 | |
493 | // ----------------------------------------------------- |
494 | |
df143b36 |
495 | static unsigned char iram_context_map[] = |
496 | { |
497 | 0, 0, 0, 0, 1, 0, 0, 0, // 04 |
498 | 0, 0, 0, 0, 0, 0, 2, 0, // 0e |
499 | 0, 0, 0, 0, 0, 3, 0, 4, // 15 17 |
500 | 5, 0, 0, 6, 0, 7, 0, 0, // 18 1b 1d |
501 | 8, 9, 0, 0, 0,10, 0, 0, // 20 21 25 |
502 | 0, 0, 0, 0, 0, 0, 0, 0, |
503 | 0, 0,11, 0, 0,12, 0, 0, // 32 35 |
504 | 13,14, 0, 0, 0, 0, 0, 0 // 38 39 |
505 | }; |
506 | |
df143b36 |
507 | static int get_iram_context(void) |
508 | { |
509 | unsigned char *ir = (unsigned char *)svp->iram_rom; |
510 | int val1, val = ir[0x083^1] + ir[0x4FA^1] + ir[0x5F7^1] + ir[0x47B^1]; |
df143b36 |
511 | val1 = iram_context_map[(val>>1)&0x3f]; |
512 | |
5c129565 |
513 | if (val1 == 0) { |
df143b36 |
514 | printf("val: %02x PC=%04x\n", (val>>1)&0x3f, rPC); |
df143b36 |
515 | //debug_dump2file(name, svp->iram_rom, 0x800); |
516 | exit(1); |
517 | } |
5c129565 |
518 | // elprintf(EL_ANOMALY, "iram_context: %02i", val1); |
df143b36 |
519 | return val1; |
520 | } |
521 | |
5d817c91 |
522 | // ----------------------------------------------------- |
523 | /* |
524 | enum { |
525 | SSP_GR0, SSP_X, SSP_Y, SSP_A, |
526 | SSP_ST, SSP_STACK, SSP_PC, SSP_P, |
527 | SSP_PM0, SSP_PM1, SSP_PM2, SSP_XST, |
528 | SSP_PM4, SSP_gr13, SSP_PMC, SSP_AL |
529 | }; |
530 | */ |
531 | /* regs with known values */ |
532 | static struct |
533 | { |
534 | ssp_reg_t gr[8]; |
535 | unsigned char r[8]; |
bad5731d |
536 | } known_regs; |
537 | |
538 | #define KRREG_X (1 << SSP_X) |
539 | #define KRREG_Y (1 << SSP_Y) |
540 | #define KRREG_A (1 << SSP_A) /* AH only */ |
541 | #define KRREG_ST (1 << SSP_ST) |
542 | #define KRREG_STACK (1 << SSP_STACK) |
543 | #define KRREG_PC (1 << SSP_PC) |
544 | #define KRREG_P (1 << SSP_P) |
545 | #define KRREG_PR0 (1 << 8) |
546 | #define KRREG_PR4 (1 << 12) |
547 | #define KRREG_AL (1 << 16) |
548 | |
549 | /* bitfield of known register values */ |
550 | static u32 known_regb = 0; |
551 | |
552 | /* known vals, which need to be flushed |
553 | * (only ST, P, r0-r7) |
554 | * ST means flags are being held in ARM PSR |
555 | */ |
556 | static u32 dirty_regb = 0; |
5d817c91 |
557 | |
558 | /* known values of host regs. |
d274c33b |
559 | * -1 - unknown |
560 | * 000000-00ffff - 16bit value |
561 | * 100000-10ffff - base reg (r7) + 16bit val |
562 | * 0r0000 - means reg (low) eq gr[r].h |
5d817c91 |
563 | */ |
564 | static int hostreg_r[4]; |
565 | |
566 | static void hostreg_clear(void) |
567 | { |
568 | int i; |
569 | for (i = 0; i < 4; i++) |
570 | hostreg_r[i] = -1; |
571 | } |
572 | |
bad5731d |
573 | // TODO |
5d817c91 |
574 | /*static*/ void hostreg_ah_changed(void) |
575 | { |
576 | int i; |
577 | for (i = 0; i < 4; i++) |
d274c33b |
578 | if (hostreg_r[i] == (SSP_A<<16)) hostreg_r[i] = -1; |
5d817c91 |
579 | } |
580 | |
726bbb3e |
581 | |
5c129565 |
582 | #define PROGRAM(x) ((unsigned short *)svp->iram_rom)[x] |
726bbb3e |
583 | |
d274c33b |
584 | /* update P, if needed. Trashes r1 */ |
585 | static void tr_flush_dirty_P(void) |
586 | { |
587 | // TODO: const regs |
bad5731d |
588 | if (!(dirty_regb & KRREG_P)) return; |
d274c33b |
589 | EOP_MOV_REG_ASR(10, 4, 16); // mov r10, r4, asr #16 |
590 | EOP_MOV_REG_LSL( 1, 4, 16); // mov r1, r4, lsl #16 |
591 | EOP_MOV_REG_ASR( 1, 1, 15); // mov r1, r1, asr #15 |
592 | EOP_MUL(10, 1, 10); // mul r10, r1, r10 |
bad5731d |
593 | dirty_regb &= ~KRREG_P; |
d274c33b |
594 | } |
595 | |
5d817c91 |
596 | /* write dirty r0-r7 to host regs. Nothing is trashed */ |
d274c33b |
597 | static void tr_flush_dirty_pr(void) |
5d817c91 |
598 | { |
599 | int i, ror = 0, reg; |
bad5731d |
600 | int dirty = dirty_regb >> 8; |
5d817c91 |
601 | /* r0-r7 */ |
bad5731d |
602 | for (i = 0; dirty && i < 8; i++, dirty >>= 1) |
5d817c91 |
603 | { |
bad5731d |
604 | if (!(dirty&1)) continue; |
5d817c91 |
605 | switch (i&3) { |
606 | case 0: ror = 0; break; |
607 | case 1: ror = 24/2; break; |
608 | case 2: ror = 16/2; break; |
609 | } |
610 | reg = (i < 4) ? 8 : 9; |
611 | EOP_BIC_IMM(reg,reg,ror,0xff); |
bad5731d |
612 | if (known_regs.r[i] != 0) |
613 | EOP_ORR_IMM(reg,reg,ror,known_regs.r[i]); |
5d817c91 |
614 | } |
bad5731d |
615 | dirty_regb &= ~0xff00; |
616 | } |
617 | |
618 | /* fush ARM PSR to r6. Trashes r0 */ |
619 | static void tr_flush_dirty_ST(void) |
620 | { |
621 | if (!(dirty_regb & KRREG_ST)) return; |
622 | EOP_BIC_IMM(6,6,0,0x0f); |
623 | EOP_MRS(0); |
624 | EOP_ORR_REG_LSR(6,6,0,28); |
625 | dirty_regb &= ~KRREG_ST; |
626 | hostreg_r[0] = -1; |
627 | } |
628 | |
629 | /* load 16bit val into host reg r0-r3. Nothing is trashed */ |
630 | static void tr_mov16(int r, int val) |
631 | { |
632 | if (hostreg_r[r] != val) { |
633 | emit_mov_const(A_COND_AL, r, val); |
634 | hostreg_r[r] = val; |
635 | } |
636 | } |
637 | |
638 | static void tr_mov16_cond(int cond, int r, int val) |
639 | { |
640 | emit_mov_const(cond, r, val); |
a6fb500b |
641 | hostreg_r[r] = -1; |
5d817c91 |
642 | } |
643 | |
bad5731d |
644 | /* read bank word to r0. Thrashes r1. */ |
5d817c91 |
645 | static void tr_bank_read(int addr) /* word addr 0-0x1ff */ |
646 | { |
bad5731d |
647 | int breg = 7; |
648 | if (addr > 0x7f) { |
649 | if (hostreg_r[1] != (0x100000|((addr&0x180)<<1))) { |
650 | EOP_ADD_IMM(1,7,30/2,(addr&0x180)>>1); // add r1, r7, ((op&0x180)<<1) |
651 | hostreg_r[1] = 0x100000|((addr&0x180)<<1); |
5d817c91 |
652 | } |
bad5731d |
653 | breg = 1; |
5d817c91 |
654 | } |
bad5731d |
655 | EOP_LDRH_IMM(0,breg,(addr&0x7f)<<1); // ldrh r0, [r1, (op&0x7f)<<1] |
5d817c91 |
656 | hostreg_r[0] = -1; |
657 | } |
658 | |
659 | /* write r0 to bank. Trashes r1. */ |
660 | static void tr_bank_write(int addr) |
661 | { |
662 | int breg = 7; |
663 | if (addr > 0x7f) { |
d274c33b |
664 | if (hostreg_r[1] != (0x100000|((addr&0x180)<<1))) { |
5d817c91 |
665 | EOP_ADD_IMM(1,7,30/2,(addr&0x180)>>1); // add r1, r7, ((op&0x180)<<1) |
d274c33b |
666 | hostreg_r[1] = 0x100000|((addr&0x180)<<1); |
5d817c91 |
667 | } |
668 | breg = 1; |
669 | } |
b9c1d012 |
670 | EOP_STRH_IMM(0,breg,(addr&0x7f)<<1); // strh r0, [r1, (op&0x7f)<<1] |
5d817c91 |
671 | } |
672 | |
673 | /* handle RAM bank pointer modifiers. Nothing is trashed. */ |
674 | static void tr_ptrr_mod(int r, int mod, int need_modulo) |
675 | { |
a6fb500b |
676 | int modulo_shift = -1; /* unknown */ |
5d817c91 |
677 | |
678 | if (mod == 0) return; |
679 | |
680 | if (!need_modulo || mod == 1) // +! |
681 | modulo_shift = 8; |
bad5731d |
682 | else if (need_modulo && (known_regb & KRREG_ST)) { |
683 | modulo_shift = known_regs.gr[SSP_ST].h & 7; |
5d817c91 |
684 | if (modulo_shift == 0) modulo_shift = 8; |
685 | } |
686 | |
a6fb500b |
687 | if (mod > 1 && modulo_shift == -1) { |
688 | /* TODO |
689 | int reg = (r < 4) ? 8 : 9; |
690 | int ror = ((r&3) + 1)*8 - (8 - modulo_shift); |
691 | EOP_MOV_REG_ROR(reg,reg,ror); |
692 | // {add|sub} reg, reg, #1<<shift |
693 | EOP_C_DOP_IMM(A_COND_AL,(mod==2)?A_OP_SUB:A_OP_ADD,0,reg,reg, 8/2, 1<<(8 - modulo_shift)); |
694 | EOP_MOV_REG_ROR(reg,reg,32-ror); |
695 | */ |
5d817c91 |
696 | |
a6fb500b |
697 | printf("need var modulo\n"); exit(1); |
698 | } |
699 | else if (known_regb & (1 << (r + 8))) |
700 | { |
701 | int modulo = (1 << modulo_shift) - 1; |
5d817c91 |
702 | if (mod == 2) |
bad5731d |
703 | known_regs.r[r] = (known_regs.r[r] & ~modulo) | ((known_regs.r[r] - 1) & modulo); |
704 | else known_regs.r[r] = (known_regs.r[r] & ~modulo) | ((known_regs.r[r] + 1) & modulo); |
a6fb500b |
705 | } |
706 | else |
707 | { |
5d817c91 |
708 | int reg = (r < 4) ? 8 : 9; |
709 | int ror = ((r&3) + 1)*8 - (8 - modulo_shift); |
710 | EOP_MOV_REG_ROR(reg,reg,ror); |
711 | // {add|sub} reg, reg, #1<<shift |
712 | EOP_C_DOP_IMM(A_COND_AL,(mod==2)?A_OP_SUB:A_OP_ADD,0,reg,reg, 8/2, 1<<(8 - modulo_shift)); |
713 | EOP_MOV_REG_ROR(reg,reg,32-ror); |
714 | } |
715 | } |
716 | |
bad5731d |
717 | /* handle writes r0 to (rX). Trashes r1. |
718 | * fortunately we can ignore modulo increment modes for writes. */ |
719 | static void tr_rX_write1(int op) |
720 | { |
721 | if ((op&3) == 3) |
722 | { |
723 | int mod = (op>>2) & 3; // direct addressing |
724 | tr_bank_write((op & 0x100) + mod); |
725 | } |
726 | else |
727 | { |
728 | int r = (op&3) | ((op>>6)&4); |
729 | if (known_regb & (1 << (r + 8))) { |
730 | tr_bank_write((op&0x100) | known_regs.r[r]); |
731 | } else { |
732 | int reg = (r < 4) ? 8 : 9; |
733 | int ror = ((4 - (r&3))*8) & 0x1f; |
734 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
735 | if (r >= 4) |
736 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
737 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
738 | else EOP_ADD_REG_LSL(1,7,1,1); |
739 | EOP_STRH_SIMPLE(0,1); // strh r0, [r1] |
740 | hostreg_r[1] = -1; |
741 | } |
742 | tr_ptrr_mod(r, (op>>2) & 3, 0); |
743 | } |
744 | } |
745 | |
746 | /* get ARM cond which would mean that SSP cond is satisfied. No trash. */ |
747 | static int tr_cond_check(int op) |
748 | { |
749 | int f = op & 0x100; |
750 | switch (op&0xf0) { |
751 | case 0x00: return A_COND_AL; /* always true */ |
752 | case 0x50: /* Z matches f(?) bit */ |
753 | if (dirty_regb & KRREG_ST) return f ? A_COND_EQ : A_COND_NE; |
754 | EOP_TST_IMM(6, 0, 4); |
755 | return f ? A_COND_NE : A_COND_EQ; |
756 | case 0x70: /* N matches f(?) bit */ |
757 | if (dirty_regb & KRREG_ST) return f ? A_COND_MI : A_COND_PL; |
758 | EOP_TST_IMM(6, 0, 8); |
759 | return f ? A_COND_NE : A_COND_EQ; |
760 | default: |
761 | printf("unimplemented cond?\n"); |
762 | exit(1); |
763 | return 0; |
764 | } |
765 | } |
766 | |
767 | static int tr_neg_cond(int cond) |
768 | { |
769 | switch (cond) { |
770 | case A_COND_AL: printf("neg for AL?\n"); exit(1); |
771 | case A_COND_EQ: return A_COND_NE; |
772 | case A_COND_NE: return A_COND_EQ; |
773 | case A_COND_MI: return A_COND_PL; |
774 | case A_COND_PL: return A_COND_MI; |
775 | default: printf("bad cond for neg\n"); exit(1); |
776 | } |
777 | return 0; |
778 | } |
779 | |
b9c1d012 |
780 | // SSP_GR0, SSP_X, SSP_Y, SSP_A, |
781 | // SSP_ST, SSP_STACK, SSP_PC, SSP_P, |
782 | //@ r4: XXYY |
783 | //@ r5: A |
784 | //@ r6: STACK and emu flags |
785 | //@ r7: SSP context |
786 | //@ r10: P |
787 | |
bad5731d |
788 | // read general reg to r0. Trashes r1 |
d274c33b |
789 | static void tr_GR0_to_r0(void) |
790 | { |
791 | tr_mov16(0, 0xffff); |
792 | } |
793 | |
794 | static void tr_X_to_r0(void) |
795 | { |
796 | if (hostreg_r[0] != (SSP_X<<16)) { |
797 | EOP_MOV_REG_LSR(0, 4, 16); // mov r0, r4, lsr #16 |
798 | hostreg_r[0] = SSP_X<<16; |
799 | } |
800 | } |
801 | |
802 | static void tr_Y_to_r0(void) |
803 | { |
804 | // TODO.. |
805 | if (hostreg_r[0] != (SSP_Y<<16)) { |
806 | EOP_MOV_REG_SIMPLE(0, 4); // mov r0, r4 |
807 | hostreg_r[0] = SSP_Y<<16; |
808 | } |
809 | } |
810 | |
811 | static void tr_A_to_r0(void) |
812 | { |
813 | if (hostreg_r[0] != (SSP_A<<16)) { |
814 | EOP_MOV_REG_LSR(0, 5, 16); // mov r0, r5, lsr #16 @ AH |
815 | hostreg_r[0] = SSP_A<<16; |
816 | } |
817 | } |
818 | |
819 | static void tr_ST_to_r0(void) |
820 | { |
821 | // VR doesn't need much accuracy here.. |
822 | EOP_MOV_REG_LSR(0, 6, 4); // mov r0, r6, lsr #4 |
823 | EOP_AND_IMM(0, 0, 0, 0x67); // and r0, r0, #0x67 |
824 | hostreg_r[0] = -1; |
825 | } |
826 | |
827 | static void tr_STACK_to_r0(void) |
828 | { |
829 | // 448 |
830 | EOP_SUB_IMM(6, 6, 8/2, 0x20); // sub r6, r6, #1<<29 |
831 | EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400 |
832 | EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048 |
833 | EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #28 |
834 | EOP_LDRH_SIMPLE(0, 1); // ldrh r0, [r1] |
835 | hostreg_r[0] = hostreg_r[1] = -1; |
836 | } |
837 | |
838 | static void tr_PC_to_r0(void) |
839 | { |
bad5731d |
840 | tr_mov16(0, known_regs.gr[SSP_PC].h); |
d274c33b |
841 | } |
842 | |
843 | static void tr_P_to_r0(void) |
844 | { |
845 | tr_flush_dirty_P(); |
846 | EOP_MOV_REG_LSR(0, 10, 16); // mov r0, r10, lsr #16 |
847 | hostreg_r[0] = -1; |
848 | } |
849 | |
850 | typedef void (tr_read_func)(void); |
851 | |
852 | static tr_read_func *tr_read_funcs[8] = |
853 | { |
854 | tr_GR0_to_r0, |
855 | tr_X_to_r0, |
856 | tr_Y_to_r0, |
857 | tr_A_to_r0, |
858 | tr_ST_to_r0, |
859 | tr_STACK_to_r0, |
860 | tr_PC_to_r0, |
861 | tr_P_to_r0 |
862 | }; |
863 | |
864 | |
b9c1d012 |
865 | // write r0 to general reg handlers. Trashes r1 |
d274c33b |
866 | static void tr_unhandled(void) |
b9c1d012 |
867 | { |
bad5731d |
868 | printf("unhandled @ %04x\n", known_regs.gr[SSP_PC].h<<1); |
b9c1d012 |
869 | exit(1); |
870 | } |
871 | |
872 | static void tr_r0_to_GR0(void) |
873 | { |
874 | // do nothing |
875 | } |
876 | |
877 | static void tr_r0_to_X(void) |
878 | { |
879 | EOP_MOV_REG_LSL(4, 4, 16); // mov r4, r4, lsl #16 |
880 | EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16 |
881 | EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16 |
bad5731d |
882 | dirty_regb |= KRREG_P; // touching X or Y makes P dirty. |
883 | hostreg_r[0] = SSP_X<<16; |
b9c1d012 |
884 | } |
885 | |
886 | static void tr_r0_to_Y(void) |
887 | { |
888 | EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16 |
889 | EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16 |
890 | EOP_MOV_REG_ROR(4, 4, 16); // mov r4, r4, ror #16 |
bad5731d |
891 | dirty_regb |= KRREG_P; |
892 | hostreg_r[0] = SSP_Y<<16; |
b9c1d012 |
893 | } |
894 | |
895 | static void tr_r0_to_A(void) |
896 | { |
897 | EOP_MOV_REG_LSL(5, 5, 16); // mov r5, r5, lsl #16 |
d274c33b |
898 | EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsr #16 @ AL |
b9c1d012 |
899 | EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16 |
bad5731d |
900 | hostreg_r[0] = SSP_A<<16; |
b9c1d012 |
901 | } |
902 | |
903 | static void tr_r0_to_ST(void) |
904 | { |
905 | // VR doesn't need much accuracy here.. |
906 | EOP_AND_IMM(1, 0, 0, 0x67); // and r1, r0, #0x67 |
907 | EOP_AND_IMM(6, 6, 8/2, 0xe0); // and r6, r6, #7<<29 @ preserve STACK |
908 | EOP_ORR_REG_LSL(6, 6, 1, 4); // orr r6, r6, r1, lsl #4 |
909 | hostreg_r[1] = -1; |
910 | } |
911 | |
912 | static void tr_r0_to_STACK(void) |
913 | { |
914 | // 448 |
915 | EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400 |
916 | EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048 |
d274c33b |
917 | EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #28 |
b9c1d012 |
918 | EOP_STRH_SIMPLE(0, 1); // strh r0, [r1] |
d274c33b |
919 | EOP_ADD_IMM(6, 6, 8/2, 0x20); // add r6, r6, #1<<29 |
b9c1d012 |
920 | hostreg_r[1] = -1; |
921 | } |
922 | |
923 | static void tr_r0_to_PC(void) |
924 | { |
925 | EOP_MOV_REG_LSL(1, 0, 16); // mov r1, r0, lsl #16 |
d274c33b |
926 | EOP_STR_IMM(1,7,0x400+6*4); // str r1, [r7, #(0x400+6*8)] |
b9c1d012 |
927 | hostreg_r[1] = -1; |
928 | } |
929 | |
930 | typedef void (tr_write_func)(void); |
931 | |
932 | static tr_write_func *tr_write_funcs[8] = |
933 | { |
934 | tr_r0_to_GR0, |
935 | tr_r0_to_X, |
936 | tr_r0_to_Y, |
937 | tr_r0_to_A, |
938 | tr_r0_to_ST, |
939 | tr_r0_to_STACK, |
940 | tr_r0_to_PC, |
d274c33b |
941 | tr_unhandled |
b9c1d012 |
942 | }; |
943 | |
5d817c91 |
944 | |
945 | static int translate_op(unsigned int op, int *pc, int imm) |
946 | { |
d274c33b |
947 | u32 tmpv, tmpv2; |
5d817c91 |
948 | int ret = 0; |
bad5731d |
949 | known_regs.gr[SSP_PC].h = *pc; |
5d817c91 |
950 | |
e807ac75 |
951 | switch (op >> 9) |
952 | { |
953 | // ld d, s |
f48f5e3b |
954 | case 0x00: |
5d817c91 |
955 | if (op == 0) { ret++; break; } // nop |
d274c33b |
956 | tmpv = op & 0xf; // src |
957 | tmpv2 = (op >> 4) & 0xf; // dst |
958 | if (tmpv >= 8 || tmpv2 >= 8) return -1; // TODO |
959 | if (tmpv2 == SSP_A && tmpv == SSP_P) { // ld A, P |
960 | tr_flush_dirty_P(); |
961 | EOP_MOV_REG_SIMPLE(5, 10); |
bad5731d |
962 | known_regb &= ~(KRREG_A|KRREG_AL); |
d274c33b |
963 | ret++; break; |
964 | } |
965 | tr_read_funcs[tmpv](); |
966 | tr_write_funcs[tmpv2](); |
bad5731d |
967 | if (known_regb & (1 << tmpv)) { |
968 | known_regs.gr[tmpv2].h = known_regs.gr[tmpv].h; |
969 | known_regb |= 1 << tmpv2; |
d274c33b |
970 | } else |
bad5731d |
971 | known_regb &= ~(1 << tmpv2); |
972 | ret++; break; |
973 | |
974 | // ld d, (ri) |
975 | //case 0x01: tmpv = ptr1_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv); break; |
976 | |
977 | // ld (ri), s |
978 | case 0x02: |
979 | tmpv = (op >> 4) & 0xf; // src |
980 | if (tmpv >= 8) return -1; // TODO |
981 | tr_read_funcs[tmpv](); |
982 | tr_rX_write1(op); |
d274c33b |
983 | ret++; break; |
f48f5e3b |
984 | |
985 | // ld a, adr |
986 | case 0x03: |
5d817c91 |
987 | tr_bank_read(op&0x1ff); |
b9c1d012 |
988 | tr_r0_to_A(); |
bad5731d |
989 | known_regb &= ~KRREG_A; |
d274c33b |
990 | hostreg_r[0] = SSP_A<<16; |
5d817c91 |
991 | ret++; break; |
992 | |
b9c1d012 |
993 | // ldi d, imm |
994 | case 0x04: |
995 | tmpv = (op & 0xf0) >> 4; |
996 | if (tmpv < 8) |
997 | { |
998 | tr_mov16(0, imm); |
999 | tr_write_funcs[tmpv](); |
bad5731d |
1000 | known_regs.gr[tmpv].h = imm; |
1001 | known_regb |= 1 << tmpv; |
a6fb500b |
1002 | ret += 2; break; |
b9c1d012 |
1003 | } |
1004 | else if (tmpv == 0xe && (PROGRAM(*pc) >> 9) == 4) |
1005 | { |
1006 | // programming PMC.. |
1007 | (*pc)++; |
1008 | tmpv = imm | (PROGRAM((*pc)++) << 16); |
a6fb500b |
1009 | ret += 2; |
bad5731d |
1010 | emit_mov_const(A_COND_AL, 0, tmpv); |
b9c1d012 |
1011 | EOP_LDR_IMM(1,7,0x484); // ldr r0, [r7, #0x484] // emu_status |
1012 | EOP_STR_IMM(0,7,0x400+14*4); // PMC |
d274c33b |
1013 | // reads on fe06, fe08; next op is ld -, |
1014 | if ((tmpv == 0x187f03 || tmpv == 0x187f04) && (PROGRAM(*pc) & 0xfff0) == 0) |
1015 | { |
bad5731d |
1016 | int flag = (tmpv == 0x187f03) ? SSP_WAIT_30FE06 : SSP_WAIT_30FE08; |
1017 | tr_flush_dirty_ST(); |
b9c1d012 |
1018 | EOP_LDR_IMM(0,7,0x490); // dram_ptr |
1019 | EOP_ADD_IMM(0,0,24/2,0xfe); // add r0, r0, #0xfe00 |
1020 | EOP_LDRH_IMM(0,0,8); // ldrh r0, [r0, #8] |
1021 | EOP_TST_REG_SIMPLE(0,0); |
d274c33b |
1022 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ADD,0,11,11,22/2,1); // add r11, r11, #1024 |
1023 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1,24/2,flag>>8); // orr r1, r1, #SSP_WAIT_30FE08 |
b9c1d012 |
1024 | } |
1025 | EOP_ORR_IMM(1,1,0,SSP_PMC_SET); // orr r1, r1, #SSP_PMC_SET |
1026 | EOP_STR_IMM(1,7,0x484); // str r1, [r7, #0x484] // emu_status |
1027 | hostreg_r[0] = hostreg_r[1] = -1; |
1028 | ret += 2; break; |
1029 | } |
1030 | else |
1031 | return -1; /* TODO.. */ |
1032 | |
bad5731d |
1033 | // ld d, ((ri)) |
1034 | case 0x05: { |
1035 | int r; |
1036 | r = (op&3) | ((op>>6)&4); // src |
1037 | tmpv2 = (op >> 4) & 0xf; // dst |
1038 | if (tmpv2 >= 8) return -1; // TODO |
1039 | |
1040 | if ((r&3) == 3) { |
1041 | tr_bank_read((op&0x100) | ((op>>2)&3)); |
1042 | } else if (known_regb & (1 << (r+8))) { |
1043 | tr_bank_read((op&0x100) | known_regs.r[r]); |
1044 | } else { |
1045 | int reg = (r < 4) ? 8 : 9; |
1046 | int ror = ((4 - (r&3))*8) & 0x1f; |
1047 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
1048 | if (r >= 4) |
1049 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
1050 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
1051 | else EOP_ADD_REG_LSL(1,7,1,1); |
1052 | EOP_LDRH_SIMPLE(0,1); // ldrh r0, [r1] |
1053 | } |
1054 | EOP_LDR_IMM(2,7,0x48c); // ptr_iram_rom |
1055 | EOP_ADD_REG_LSL(2,2,0,1); // add r2, r2, r0, lsl #1 |
1056 | EOP_ADD_IMM(0,0,0,1); // add r0, r0, #1 |
1057 | if ((r&3) == 3) { |
1058 | tr_bank_write((op&0x100) | ((op>>2)&3)); |
1059 | } else if (known_regb & (1 << (r+8))) { |
1060 | tr_bank_write((op&0x100) | known_regs.r[r]); |
1061 | } else { |
1062 | EOP_STRH_SIMPLE(0,1); // strh r0, [r1] |
1063 | hostreg_r[1] = -1; |
1064 | } |
1065 | EOP_LDRH_SIMPLE(0,2); // ldrh r0, [r0] |
1066 | hostreg_r[0] = hostreg_r[2] = -1; |
a6fb500b |
1067 | known_regb &= ~(1 << tmpv2); |
bad5731d |
1068 | tr_write_funcs[tmpv2](); |
a6fb500b |
1069 | ret += 3; break; /* should certainly take > 1 */ |
bad5731d |
1070 | } |
b9c1d012 |
1071 | |
5d817c91 |
1072 | // ldi (ri), imm |
1073 | case 0x06: |
5d817c91 |
1074 | tr_mov16(0, imm); |
bad5731d |
1075 | tr_rX_write1(op); |
a6fb500b |
1076 | ret += 2; break; |
f48f5e3b |
1077 | |
1078 | // ld adr, a |
1079 | case 0x07: |
d274c33b |
1080 | if (hostreg_r[0] != (SSP_A<<16)) { |
5d817c91 |
1081 | EOP_MOV_REG_LSR(0, 5, 16); // mov r0, r5, lsr #16 @ A |
d274c33b |
1082 | hostreg_r[0] = SSP_A<<16; |
5d817c91 |
1083 | } |
1084 | tr_bank_write(op&0x1ff); |
1085 | ret++; break; |
1086 | |
d274c33b |
1087 | // ld d, ri |
1088 | case 0x09: { |
bad5731d |
1089 | int r; |
d274c33b |
1090 | r = (op&3) | ((op>>6)&4); // src |
bad5731d |
1091 | tmpv2 = (op >> 4) & 0xf; // dst |
d274c33b |
1092 | if (tmpv2 >= 8) tr_unhandled(); |
bad5731d |
1093 | if ((r&3) == 3) tr_unhandled(); |
d274c33b |
1094 | |
bad5731d |
1095 | if (known_regb & (1 << (r+8))) { |
1096 | tr_mov16(0, known_regs.r[r]); |
1097 | known_regs.gr[tmpv2].h = known_regs.r[r]; |
1098 | known_regb |= 1 << tmpv2; |
d274c33b |
1099 | } else { |
bad5731d |
1100 | int reg = (r < 4) ? 8 : 9; |
d274c33b |
1101 | if (r&3) EOP_MOV_REG_LSR(0, reg, (r&3)*8); // mov r0, r{7,8}, lsr #lsr |
1102 | EOP_AND_IMM(0, (r&3)?0:reg, 0, 0xff); // and r0, r{7,8}, <mask> |
1103 | hostreg_r[0] = -1; |
bad5731d |
1104 | known_regb &= ~(1 << tmpv2); |
d274c33b |
1105 | } |
1106 | tr_write_funcs[tmpv2](); |
1107 | ret++; break; |
1108 | } |
1109 | |
bad5731d |
1110 | // ld ri, s |
1111 | case 0x0a: { |
1112 | int r; |
1113 | r = (op&3) | ((op>>6)&4); // dst |
1114 | tmpv = (op >> 4) & 0xf; // src |
1115 | if (tmpv >= 8) tr_unhandled(); |
1116 | if ((r&3) == 3) tr_unhandled(); |
1117 | |
1118 | if (known_regb & (1 << tmpv)) { |
1119 | known_regs.r[r] = known_regs.gr[tmpv].h; |
1120 | known_regb |= 1 << (r + 8); |
1121 | dirty_regb |= 1 << (r + 8); |
1122 | } else { |
1123 | int reg = (r < 4) ? 8 : 9; |
1124 | int ror = ((4 - (r&3))*8) & 0x1f; |
1125 | tr_read_funcs[tmpv](); |
1126 | EOP_BIC_IMM(reg, reg, ror/2, 0xff); // bic r{7,8}, r{7,8}, <mask> |
1127 | EOP_AND_IMM(0, 0, 0, 0xff); // and r0, r0, 0xff |
1128 | EOP_ORR_REG_LSL(reg, reg, 0, (r&3)*8); // orr r{7,8}, r{7,8}, r0, lsl #lsl |
1129 | hostreg_r[0] = -1; |
1130 | known_regb &= ~(1 << (r+8)); |
1131 | dirty_regb &= ~(1 << (r+8)); |
1132 | } |
1133 | ret++; break; |
1134 | } |
1135 | |
5d817c91 |
1136 | // ldi ri, simm |
1137 | case 0x0c ... 0x0f: |
1138 | tmpv = (op>>8)&7; |
bad5731d |
1139 | known_regs.r[tmpv] = op; |
1140 | known_regb |= 1 << (tmpv + 8); |
5d817c91 |
1141 | dirty_regb |= 1 << (tmpv + 8); |
1142 | ret++; break; |
bad5731d |
1143 | |
a6fb500b |
1144 | // call cond, addr |
1145 | case 0x24: |
1146 | tr_mov16(0, *pc); |
1147 | tr_r0_to_STACK(); |
1148 | tmpv = tr_cond_check(op); |
1149 | tr_mov16_cond(tmpv, 0, imm); |
1150 | if (tmpv != A_COND_AL) { |
1151 | tr_mov16_cond(tr_neg_cond(tmpv), 0, *pc); |
1152 | } |
1153 | tr_r0_to_PC(); |
1154 | ret += 2; break; |
1155 | |
bad5731d |
1156 | // ld d, (a) |
1157 | case 0x25: |
bad5731d |
1158 | tmpv2 = (op >> 4) & 0xf; // dst |
1159 | if (tmpv2 >= 8) return -1; // TODO |
1160 | |
a6fb500b |
1161 | tr_A_to_r0(); |
bad5731d |
1162 | EOP_LDR_IMM(1,7,0x48c); // ptr_iram_rom |
1163 | EOP_ADD_REG_LSL(0,1,0,1); // add r0, r1, r0, lsl #1 |
1164 | EOP_LDRH_SIMPLE(0,0); // ldrh r0, [r0] |
1165 | hostreg_r[0] = hostreg_r[1] = -1; |
a6fb500b |
1166 | known_regb &= ~(1 << tmpv2); |
bad5731d |
1167 | tr_write_funcs[tmpv2](); |
a6fb500b |
1168 | ret += 3; break; |
bad5731d |
1169 | |
1170 | // bra cond, addr |
a6fb500b |
1171 | case 0x26: |
bad5731d |
1172 | tmpv = tr_cond_check(op); |
1173 | tr_mov16_cond(tmpv, 0, imm); |
1174 | if (tmpv != A_COND_AL) { |
bad5731d |
1175 | tr_mov16_cond(tr_neg_cond(tmpv), 0, *pc); |
1176 | } |
a6fb500b |
1177 | tr_r0_to_PC(); |
1178 | ret += 2; break; |
bad5731d |
1179 | |
1180 | |
1181 | /* |
1182 | // mpys? |
1183 | case 0x1b: |
1184 | read_P(); // update P |
1185 | rA32 -= rP.v; // maybe only upper word? |
1186 | UPD_ACC_ZN // there checking flags after this |
1187 | rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?) |
1188 | rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj |
1189 | break; |
1190 | |
1191 | // mpya (rj), (ri), b |
1192 | case 0x4b: |
1193 | read_P(); // update P |
1194 | rA32 += rP.v; // confirmed to be 32bit |
1195 | UPD_ACC_ZN // ? |
1196 | rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?) |
1197 | rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj |
1198 | break; |
1199 | |
1200 | // mld (rj), (ri), b |
1201 | case 0x5b: |
1202 | EOP_MOV_IMM(5, 0, 0); // mov r5, #0 |
1203 | known_regs.r[SSP_A].v = 0; |
1204 | known_regb |= (KRREG_A|KRREG_AL); |
1205 | EOP_BIC_IMM(6, 6, 0, 0x0f); // bic r6, r6, 0xf // flags |
a6fb500b |
1206 | EOP_BIC_IMM(6, 6, 0, 0x04); // bic r6, r6, 4 // set Z |
bad5731d |
1207 | // TODO |
1208 | ret++; break; |
1209 | */ |
e807ac75 |
1210 | } |
1211 | |
5d817c91 |
1212 | return ret; |
e807ac75 |
1213 | } |
1214 | |
df143b36 |
1215 | static void *translate_block(int pc) |
726bbb3e |
1216 | { |
e807ac75 |
1217 | unsigned int op, op1, imm, ccount = 0; |
5c129565 |
1218 | unsigned int *block_start; |
d274c33b |
1219 | int ret, ret_prev = -1; |
5c129565 |
1220 | |
1221 | // create .pool |
e807ac75 |
1222 | //*tcache_ptr++ = (u32) in_funcs; // -1 func pool |
726bbb3e |
1223 | |
259ed0ea |
1224 | printf("translate %04x -> %04x\n", pc<<1, (tcache_ptr-tcache)<<2); |
5c129565 |
1225 | block_start = tcache_ptr; |
bad5731d |
1226 | known_regb = 0; |
1227 | dirty_regb = KRREG_P; |
5d817c91 |
1228 | hostreg_clear(); |
5c129565 |
1229 | |
1230 | emit_block_prologue(); |
726bbb3e |
1231 | |
e807ac75 |
1232 | for (; ccount < 100;) |
726bbb3e |
1233 | { |
259ed0ea |
1234 | //printf(" insn #%i\n", icount); |
726bbb3e |
1235 | op = PROGRAM(pc++); |
1236 | op1 = op >> 9; |
e807ac75 |
1237 | imm = (u32)-1; |
5c129565 |
1238 | |
e807ac75 |
1239 | if ((op1 & 0xf) == 4 || (op1 & 0xf) == 6) |
1240 | imm = PROGRAM(pc++); // immediate |
5c129565 |
1241 | |
5d817c91 |
1242 | ret = translate_op(op, &pc, imm); |
e807ac75 |
1243 | if (ret <= 0) |
1244 | { |
d274c33b |
1245 | tr_flush_dirty_pr(); |
5d817c91 |
1246 | |
bad5731d |
1247 | emit_mov_const(A_COND_AL, 0, op); |
5c129565 |
1248 | |
e807ac75 |
1249 | // need immediate? |
1250 | if (imm != (u32)-1) |
bad5731d |
1251 | emit_mov_const(A_COND_AL, 1, imm); |
5c129565 |
1252 | |
e807ac75 |
1253 | // dump PC |
1254 | emit_pc_dump(pc); |
5c129565 |
1255 | |
d274c33b |
1256 | if (ret_prev > 0) emit_call(regfile_store); |
1257 | emit_call(in_funcs[op1]); |
1258 | emit_call(regfile_load); |
e807ac75 |
1259 | |
1260 | if (in_funcs[op1] == NULL) { |
1261 | printf("NULL func! op=%08x (%02x)\n", op, op1); |
1262 | exit(1); |
1263 | } |
1264 | ccount++; |
5d817c91 |
1265 | hostreg_clear(); |
bad5731d |
1266 | dirty_regb |= KRREG_P; |
1267 | known_regb = 0; |
892b1dd2 |
1268 | } |
e807ac75 |
1269 | else |
1270 | ccount += ret; |
1271 | |
726bbb3e |
1272 | if (op1 == 0x24 || op1 == 0x26 || // call, bra |
1273 | ((op1 == 0 || op1 == 1 || op1 == 4 || op1 == 5 || op1 == 9 || op1 == 0x25) && |
1274 | (op & 0xf0) == 0x60)) { // ld PC |
1275 | break; |
1276 | } |
d274c33b |
1277 | ret_prev = ret; |
726bbb3e |
1278 | } |
5c129565 |
1279 | |
d274c33b |
1280 | tr_flush_dirty_pr(); |
e807ac75 |
1281 | emit_block_epilogue(ccount + 1); |
5c129565 |
1282 | *tcache_ptr++ = 0xffffffff; // end of block |
726bbb3e |
1283 | //printf(" %i inst\n", icount); |
1284 | |
892b1dd2 |
1285 | if (tcache_ptr - tcache > TCACHE_SIZE/4) { |
726bbb3e |
1286 | printf("tcache overflow!\n"); |
1287 | fflush(stdout); |
1288 | exit(1); |
1289 | } |
1290 | |
1291 | // stats |
1292 | nblocks++; |
df143b36 |
1293 | //if (pc >= 0x400) |
892b1dd2 |
1294 | printf("%i blocks, %i bytes\n", nblocks, (tcache_ptr - tcache)*4); |
259ed0ea |
1295 | //printf("%p %p\n", tcache_ptr, emit_block_epilogue); |
df143b36 |
1296 | |
5d817c91 |
1297 | #ifdef DUMP_BLOCK |
5c129565 |
1298 | { |
1299 | FILE *f = fopen("tcache.bin", "wb"); |
1300 | fwrite(tcache, 1, (tcache_ptr - tcache)*4, f); |
1301 | fclose(f); |
1302 | } |
1303 | exit(0); |
1304 | #endif |
259ed0ea |
1305 | |
1306 | handle_caches(); |
1307 | |
5c129565 |
1308 | return block_start; |
726bbb3e |
1309 | } |
1310 | |
1311 | |
1312 | |
1313 | // ----------------------------------------------------- |
1314 | |
e807ac75 |
1315 | int ssp1601_dyn_startup(void) |
726bbb3e |
1316 | { |
e807ac75 |
1317 | memset(tcache, 0, TCACHE_SIZE); |
726bbb3e |
1318 | memset(block_table, 0, sizeof(block_table)); |
df143b36 |
1319 | memset(block_table_iram, 0, sizeof(block_table_iram)); |
e807ac75 |
1320 | tcache_ptr = tcache; |
5c129565 |
1321 | *tcache_ptr++ = 0xffffffff; |
726bbb3e |
1322 | |
1323 | return 0; |
1324 | } |
1325 | |
1326 | |
1327 | void ssp1601_dyn_reset(ssp1601_t *ssp) |
1328 | { |
1329 | ssp1601_reset_local(ssp); |
bad5731d |
1330 | ssp->ptr_rom = (unsigned int) Pico.rom; |
1331 | ssp->ptr_iram_rom = (unsigned int) svp->iram_rom; |
d274c33b |
1332 | ssp->ptr_dram = (unsigned int) svp->dram; |
726bbb3e |
1333 | } |
1334 | |
726bbb3e |
1335 | void ssp1601_dyn_run(int cycles) |
1336 | { |
b9c1d012 |
1337 | if (ssp->emu_status & SSP_WAIT_MASK) return; |
1338 | //{ printf("%i wait\n", Pico.m.frame_count); return; } |
1339 | //printf("%i %04x\n", Pico.m.frame_count, rPC<<1); |
1340 | |
5d817c91 |
1341 | #ifdef DUMP_BLOCK |
1342 | rPC = DUMP_BLOCK >> 1; |
1343 | #endif |
726bbb3e |
1344 | while (cycles > 0) |
1345 | { |
e807ac75 |
1346 | int (*trans_entry)(void); |
df143b36 |
1347 | if (rPC < 0x800/2) |
1348 | { |
1349 | if (iram_dirty) { |
1350 | iram_context = get_iram_context(); |
892b1dd2 |
1351 | iram_dirty--; |
df143b36 |
1352 | } |
1353 | if (block_table_iram[iram_context][rPC] == NULL) |
1354 | block_table_iram[iram_context][rPC] = translate_block(rPC); |
5c129565 |
1355 | trans_entry = (void *) block_table_iram[iram_context][rPC]; |
df143b36 |
1356 | } |
1357 | else |
1358 | { |
1359 | if (block_table[rPC] == NULL) |
1360 | block_table[rPC] = translate_block(rPC); |
5c129565 |
1361 | trans_entry = (void *) block_table[rPC]; |
df143b36 |
1362 | } |
726bbb3e |
1363 | |
e807ac75 |
1364 | //printf("enter %04x\n", rPC<<1); |
1365 | cycles -= trans_entry(); |
1366 | //printf("leave %04x\n", rPC<<1); |
726bbb3e |
1367 | } |
1368 | // debug_dump2file("tcache.bin", tcache, (tcache_ptr - tcache) << 1); |
1369 | // exit(1); |
1370 | } |
1371 | |