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Merge remote-tracking branch 'kraxel/usb.52' into staging
[mirror_qemu.git] / target-xtensa / translate.c
1 /*
2 * Xtensa ISA:
3 * http://www.tensilica.com/products/literature-docs/documentation/xtensa-isa-databook.htm
4 *
5 * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * * Neither the name of the Open Source and Linux Lab nor the
16 * names of its contributors may be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <stdio.h>
32
33 #include "cpu.h"
34 #include "exec-all.h"
35 #include "disas.h"
36 #include "tcg-op.h"
37 #include "qemu-log.h"
38 #include "sysemu.h"
39
40 #include "helper.h"
41 #define GEN_HELPER 1
42 #include "helper.h"
43
44 typedef struct DisasContext {
45 const XtensaConfig *config;
46 TranslationBlock *tb;
47 uint32_t pc;
48 uint32_t next_pc;
49 int cring;
50 int ring;
51 uint32_t lbeg;
52 uint32_t lend;
53 TCGv_i32 litbase;
54 int is_jmp;
55 int singlestep_enabled;
56
57 bool sar_5bit;
58 bool sar_m32_5bit;
59 bool sar_m32_allocated;
60 TCGv_i32 sar_m32;
61
62 uint32_t ccount_delta;
63 unsigned used_window;
64
65 bool debug;
66 bool icount;
67 TCGv_i32 next_icount;
68 } DisasContext;
69
70 static TCGv_ptr cpu_env;
71 static TCGv_i32 cpu_pc;
72 static TCGv_i32 cpu_R[16];
73 static TCGv_i32 cpu_SR[256];
74 static TCGv_i32 cpu_UR[256];
75
76 #include "gen-icount.h"
77
78 static const char * const sregnames[256] = {
79 [LBEG] = "LBEG",
80 [LEND] = "LEND",
81 [LCOUNT] = "LCOUNT",
82 [SAR] = "SAR",
83 [BR] = "BR",
84 [LITBASE] = "LITBASE",
85 [SCOMPARE1] = "SCOMPARE1",
86 [ACCLO] = "ACCLO",
87 [ACCHI] = "ACCHI",
88 [MR] = "MR0",
89 [MR + 1] = "MR1",
90 [MR + 2] = "MR2",
91 [MR + 3] = "MR3",
92 [WINDOW_BASE] = "WINDOW_BASE",
93 [WINDOW_START] = "WINDOW_START",
94 [PTEVADDR] = "PTEVADDR",
95 [RASID] = "RASID",
96 [ITLBCFG] = "ITLBCFG",
97 [DTLBCFG] = "DTLBCFG",
98 [IBREAKENABLE] = "IBREAKENABLE",
99 [IBREAKA] = "IBREAKA0",
100 [IBREAKA + 1] = "IBREAKA1",
101 [DBREAKA] = "DBREAKA0",
102 [DBREAKA + 1] = "DBREAKA1",
103 [DBREAKC] = "DBREAKC0",
104 [DBREAKC + 1] = "DBREAKC1",
105 [EPC1] = "EPC1",
106 [EPC1 + 1] = "EPC2",
107 [EPC1 + 2] = "EPC3",
108 [EPC1 + 3] = "EPC4",
109 [EPC1 + 4] = "EPC5",
110 [EPC1 + 5] = "EPC6",
111 [EPC1 + 6] = "EPC7",
112 [DEPC] = "DEPC",
113 [EPS2] = "EPS2",
114 [EPS2 + 1] = "EPS3",
115 [EPS2 + 2] = "EPS4",
116 [EPS2 + 3] = "EPS5",
117 [EPS2 + 4] = "EPS6",
118 [EPS2 + 5] = "EPS7",
119 [EXCSAVE1] = "EXCSAVE1",
120 [EXCSAVE1 + 1] = "EXCSAVE2",
121 [EXCSAVE1 + 2] = "EXCSAVE3",
122 [EXCSAVE1 + 3] = "EXCSAVE4",
123 [EXCSAVE1 + 4] = "EXCSAVE5",
124 [EXCSAVE1 + 5] = "EXCSAVE6",
125 [EXCSAVE1 + 6] = "EXCSAVE7",
126 [CPENABLE] = "CPENABLE",
127 [INTSET] = "INTSET",
128 [INTCLEAR] = "INTCLEAR",
129 [INTENABLE] = "INTENABLE",
130 [PS] = "PS",
131 [VECBASE] = "VECBASE",
132 [EXCCAUSE] = "EXCCAUSE",
133 [DEBUGCAUSE] = "DEBUGCAUSE",
134 [CCOUNT] = "CCOUNT",
135 [PRID] = "PRID",
136 [ICOUNT] = "ICOUNT",
137 [ICOUNTLEVEL] = "ICOUNTLEVEL",
138 [EXCVADDR] = "EXCVADDR",
139 [CCOMPARE] = "CCOMPARE0",
140 [CCOMPARE + 1] = "CCOMPARE1",
141 [CCOMPARE + 2] = "CCOMPARE2",
142 };
143
144 static const char * const uregnames[256] = {
145 [THREADPTR] = "THREADPTR",
146 [FCR] = "FCR",
147 [FSR] = "FSR",
148 };
149
150 void xtensa_translate_init(void)
151 {
152 static const char * const regnames[] = {
153 "ar0", "ar1", "ar2", "ar3",
154 "ar4", "ar5", "ar6", "ar7",
155 "ar8", "ar9", "ar10", "ar11",
156 "ar12", "ar13", "ar14", "ar15",
157 };
158 int i;
159
160 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
161 cpu_pc = tcg_global_mem_new_i32(TCG_AREG0,
162 offsetof(CPUXtensaState, pc), "pc");
163
164 for (i = 0; i < 16; i++) {
165 cpu_R[i] = tcg_global_mem_new_i32(TCG_AREG0,
166 offsetof(CPUXtensaState, regs[i]),
167 regnames[i]);
168 }
169
170 for (i = 0; i < 256; ++i) {
171 if (sregnames[i]) {
172 cpu_SR[i] = tcg_global_mem_new_i32(TCG_AREG0,
173 offsetof(CPUXtensaState, sregs[i]),
174 sregnames[i]);
175 }
176 }
177
178 for (i = 0; i < 256; ++i) {
179 if (uregnames[i]) {
180 cpu_UR[i] = tcg_global_mem_new_i32(TCG_AREG0,
181 offsetof(CPUXtensaState, uregs[i]),
182 uregnames[i]);
183 }
184 }
185 #define GEN_HELPER 2
186 #include "helper.h"
187 }
188
189 static inline bool option_bits_enabled(DisasContext *dc, uint64_t opt)
190 {
191 return xtensa_option_bits_enabled(dc->config, opt);
192 }
193
194 static inline bool option_enabled(DisasContext *dc, int opt)
195 {
196 return xtensa_option_enabled(dc->config, opt);
197 }
198
199 static void init_litbase(DisasContext *dc)
200 {
201 if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
202 dc->litbase = tcg_temp_local_new_i32();
203 tcg_gen_andi_i32(dc->litbase, cpu_SR[LITBASE], 0xfffff000);
204 }
205 }
206
207 static void reset_litbase(DisasContext *dc)
208 {
209 if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
210 tcg_temp_free(dc->litbase);
211 }
212 }
213
214 static void init_sar_tracker(DisasContext *dc)
215 {
216 dc->sar_5bit = false;
217 dc->sar_m32_5bit = false;
218 dc->sar_m32_allocated = false;
219 }
220
221 static void reset_sar_tracker(DisasContext *dc)
222 {
223 if (dc->sar_m32_allocated) {
224 tcg_temp_free(dc->sar_m32);
225 }
226 }
227
228 static void gen_right_shift_sar(DisasContext *dc, TCGv_i32 sa)
229 {
230 tcg_gen_andi_i32(cpu_SR[SAR], sa, 0x1f);
231 if (dc->sar_m32_5bit) {
232 tcg_gen_discard_i32(dc->sar_m32);
233 }
234 dc->sar_5bit = true;
235 dc->sar_m32_5bit = false;
236 }
237
238 static void gen_left_shift_sar(DisasContext *dc, TCGv_i32 sa)
239 {
240 TCGv_i32 tmp = tcg_const_i32(32);
241 if (!dc->sar_m32_allocated) {
242 dc->sar_m32 = tcg_temp_local_new_i32();
243 dc->sar_m32_allocated = true;
244 }
245 tcg_gen_andi_i32(dc->sar_m32, sa, 0x1f);
246 tcg_gen_sub_i32(cpu_SR[SAR], tmp, dc->sar_m32);
247 dc->sar_5bit = false;
248 dc->sar_m32_5bit = true;
249 tcg_temp_free(tmp);
250 }
251
252 static void gen_advance_ccount(DisasContext *dc)
253 {
254 if (dc->ccount_delta > 0) {
255 TCGv_i32 tmp = tcg_const_i32(dc->ccount_delta);
256 dc->ccount_delta = 0;
257 gen_helper_advance_ccount(cpu_env, tmp);
258 tcg_temp_free(tmp);
259 }
260 }
261
262 static void reset_used_window(DisasContext *dc)
263 {
264 dc->used_window = 0;
265 }
266
267 static void gen_exception(DisasContext *dc, int excp)
268 {
269 TCGv_i32 tmp = tcg_const_i32(excp);
270 gen_advance_ccount(dc);
271 gen_helper_exception(cpu_env, tmp);
272 tcg_temp_free(tmp);
273 }
274
275 static void gen_exception_cause(DisasContext *dc, uint32_t cause)
276 {
277 TCGv_i32 tpc = tcg_const_i32(dc->pc);
278 TCGv_i32 tcause = tcg_const_i32(cause);
279 gen_advance_ccount(dc);
280 gen_helper_exception_cause(cpu_env, tpc, tcause);
281 tcg_temp_free(tpc);
282 tcg_temp_free(tcause);
283 if (cause == ILLEGAL_INSTRUCTION_CAUSE ||
284 cause == SYSCALL_CAUSE) {
285 dc->is_jmp = DISAS_UPDATE;
286 }
287 }
288
289 static void gen_exception_cause_vaddr(DisasContext *dc, uint32_t cause,
290 TCGv_i32 vaddr)
291 {
292 TCGv_i32 tpc = tcg_const_i32(dc->pc);
293 TCGv_i32 tcause = tcg_const_i32(cause);
294 gen_advance_ccount(dc);
295 gen_helper_exception_cause_vaddr(cpu_env, tpc, tcause, vaddr);
296 tcg_temp_free(tpc);
297 tcg_temp_free(tcause);
298 }
299
300 static void gen_debug_exception(DisasContext *dc, uint32_t cause)
301 {
302 TCGv_i32 tpc = tcg_const_i32(dc->pc);
303 TCGv_i32 tcause = tcg_const_i32(cause);
304 gen_advance_ccount(dc);
305 gen_helper_debug_exception(cpu_env, tpc, tcause);
306 tcg_temp_free(tpc);
307 tcg_temp_free(tcause);
308 if (cause & (DEBUGCAUSE_IB | DEBUGCAUSE_BI | DEBUGCAUSE_BN)) {
309 dc->is_jmp = DISAS_UPDATE;
310 }
311 }
312
313 static void gen_check_privilege(DisasContext *dc)
314 {
315 if (dc->cring) {
316 gen_exception_cause(dc, PRIVILEGED_CAUSE);
317 dc->is_jmp = DISAS_UPDATE;
318 }
319 }
320
321 static void gen_jump_slot(DisasContext *dc, TCGv dest, int slot)
322 {
323 tcg_gen_mov_i32(cpu_pc, dest);
324 gen_advance_ccount(dc);
325 if (dc->icount) {
326 tcg_gen_mov_i32(cpu_SR[ICOUNT], dc->next_icount);
327 }
328 if (dc->singlestep_enabled) {
329 gen_exception(dc, EXCP_DEBUG);
330 } else {
331 if (slot >= 0) {
332 tcg_gen_goto_tb(slot);
333 tcg_gen_exit_tb((tcg_target_long)dc->tb + slot);
334 } else {
335 tcg_gen_exit_tb(0);
336 }
337 }
338 dc->is_jmp = DISAS_UPDATE;
339 }
340
341 static void gen_jump(DisasContext *dc, TCGv dest)
342 {
343 gen_jump_slot(dc, dest, -1);
344 }
345
346 static void gen_jumpi(DisasContext *dc, uint32_t dest, int slot)
347 {
348 TCGv_i32 tmp = tcg_const_i32(dest);
349 if (((dc->pc ^ dest) & TARGET_PAGE_MASK) != 0) {
350 slot = -1;
351 }
352 gen_jump_slot(dc, tmp, slot);
353 tcg_temp_free(tmp);
354 }
355
356 static void gen_callw_slot(DisasContext *dc, int callinc, TCGv_i32 dest,
357 int slot)
358 {
359 TCGv_i32 tcallinc = tcg_const_i32(callinc);
360
361 tcg_gen_deposit_i32(cpu_SR[PS], cpu_SR[PS],
362 tcallinc, PS_CALLINC_SHIFT, PS_CALLINC_LEN);
363 tcg_temp_free(tcallinc);
364 tcg_gen_movi_i32(cpu_R[callinc << 2],
365 (callinc << 30) | (dc->next_pc & 0x3fffffff));
366 gen_jump_slot(dc, dest, slot);
367 }
368
369 static void gen_callw(DisasContext *dc, int callinc, TCGv_i32 dest)
370 {
371 gen_callw_slot(dc, callinc, dest, -1);
372 }
373
374 static void gen_callwi(DisasContext *dc, int callinc, uint32_t dest, int slot)
375 {
376 TCGv_i32 tmp = tcg_const_i32(dest);
377 if (((dc->pc ^ dest) & TARGET_PAGE_MASK) != 0) {
378 slot = -1;
379 }
380 gen_callw_slot(dc, callinc, tmp, slot);
381 tcg_temp_free(tmp);
382 }
383
384 static bool gen_check_loop_end(DisasContext *dc, int slot)
385 {
386 if (option_enabled(dc, XTENSA_OPTION_LOOP) &&
387 !(dc->tb->flags & XTENSA_TBFLAG_EXCM) &&
388 dc->next_pc == dc->lend) {
389 int label = gen_new_label();
390
391 gen_advance_ccount(dc);
392 tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_SR[LCOUNT], 0, label);
393 tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_SR[LCOUNT], 1);
394 gen_jumpi(dc, dc->lbeg, slot);
395 gen_set_label(label);
396 gen_jumpi(dc, dc->next_pc, -1);
397 return true;
398 }
399 return false;
400 }
401
402 static void gen_jumpi_check_loop_end(DisasContext *dc, int slot)
403 {
404 if (!gen_check_loop_end(dc, slot)) {
405 gen_jumpi(dc, dc->next_pc, slot);
406 }
407 }
408
409 static void gen_brcond(DisasContext *dc, TCGCond cond,
410 TCGv_i32 t0, TCGv_i32 t1, uint32_t offset)
411 {
412 int label = gen_new_label();
413
414 gen_advance_ccount(dc);
415 tcg_gen_brcond_i32(cond, t0, t1, label);
416 gen_jumpi_check_loop_end(dc, 0);
417 gen_set_label(label);
418 gen_jumpi(dc, dc->pc + offset, 1);
419 }
420
421 static void gen_brcondi(DisasContext *dc, TCGCond cond,
422 TCGv_i32 t0, uint32_t t1, uint32_t offset)
423 {
424 TCGv_i32 tmp = tcg_const_i32(t1);
425 gen_brcond(dc, cond, t0, tmp, offset);
426 tcg_temp_free(tmp);
427 }
428
429 static void gen_rsr_ccount(DisasContext *dc, TCGv_i32 d, uint32_t sr)
430 {
431 gen_advance_ccount(dc);
432 tcg_gen_mov_i32(d, cpu_SR[sr]);
433 }
434
435 static void gen_rsr_ptevaddr(DisasContext *dc, TCGv_i32 d, uint32_t sr)
436 {
437 tcg_gen_shri_i32(d, cpu_SR[EXCVADDR], 10);
438 tcg_gen_or_i32(d, d, cpu_SR[sr]);
439 tcg_gen_andi_i32(d, d, 0xfffffffc);
440 }
441
442 static void gen_rsr(DisasContext *dc, TCGv_i32 d, uint32_t sr)
443 {
444 static void (* const rsr_handler[256])(DisasContext *dc,
445 TCGv_i32 d, uint32_t sr) = {
446 [CCOUNT] = gen_rsr_ccount,
447 [PTEVADDR] = gen_rsr_ptevaddr,
448 };
449
450 if (sregnames[sr]) {
451 if (rsr_handler[sr]) {
452 rsr_handler[sr](dc, d, sr);
453 } else {
454 tcg_gen_mov_i32(d, cpu_SR[sr]);
455 }
456 } else {
457 qemu_log("RSR %d not implemented, ", sr);
458 }
459 }
460
461 static void gen_wsr_lbeg(DisasContext *dc, uint32_t sr, TCGv_i32 s)
462 {
463 gen_helper_wsr_lbeg(cpu_env, s);
464 gen_jumpi_check_loop_end(dc, 0);
465 }
466
467 static void gen_wsr_lend(DisasContext *dc, uint32_t sr, TCGv_i32 s)
468 {
469 gen_helper_wsr_lend(cpu_env, s);
470 gen_jumpi_check_loop_end(dc, 0);
471 }
472
473 static void gen_wsr_sar(DisasContext *dc, uint32_t sr, TCGv_i32 s)
474 {
475 tcg_gen_andi_i32(cpu_SR[sr], s, 0x3f);
476 if (dc->sar_m32_5bit) {
477 tcg_gen_discard_i32(dc->sar_m32);
478 }
479 dc->sar_5bit = false;
480 dc->sar_m32_5bit = false;
481 }
482
483 static void gen_wsr_br(DisasContext *dc, uint32_t sr, TCGv_i32 s)
484 {
485 tcg_gen_andi_i32(cpu_SR[sr], s, 0xffff);
486 }
487
488 static void gen_wsr_litbase(DisasContext *dc, uint32_t sr, TCGv_i32 s)
489 {
490 tcg_gen_andi_i32(cpu_SR[sr], s, 0xfffff001);
491 /* This can change tb->flags, so exit tb */
492 gen_jumpi_check_loop_end(dc, -1);
493 }
494
495 static void gen_wsr_acchi(DisasContext *dc, uint32_t sr, TCGv_i32 s)
496 {
497 tcg_gen_ext8s_i32(cpu_SR[sr], s);
498 }
499
500 static void gen_wsr_windowbase(DisasContext *dc, uint32_t sr, TCGv_i32 v)
501 {
502 gen_helper_wsr_windowbase(cpu_env, v);
503 reset_used_window(dc);
504 }
505
506 static void gen_wsr_windowstart(DisasContext *dc, uint32_t sr, TCGv_i32 v)
507 {
508 tcg_gen_andi_i32(cpu_SR[sr], v, (1 << dc->config->nareg / 4) - 1);
509 reset_used_window(dc);
510 }
511
512 static void gen_wsr_ptevaddr(DisasContext *dc, uint32_t sr, TCGv_i32 v)
513 {
514 tcg_gen_andi_i32(cpu_SR[sr], v, 0xffc00000);
515 }
516
517 static void gen_wsr_rasid(DisasContext *dc, uint32_t sr, TCGv_i32 v)
518 {
519 gen_helper_wsr_rasid(cpu_env, v);
520 /* This can change tb->flags, so exit tb */
521 gen_jumpi_check_loop_end(dc, -1);
522 }
523
524 static void gen_wsr_tlbcfg(DisasContext *dc, uint32_t sr, TCGv_i32 v)
525 {
526 tcg_gen_andi_i32(cpu_SR[sr], v, 0x01130000);
527 }
528
529 static void gen_wsr_ibreakenable(DisasContext *dc, uint32_t sr, TCGv_i32 v)
530 {
531 gen_helper_wsr_ibreakenable(cpu_env, v);
532 gen_jumpi_check_loop_end(dc, 0);
533 }
534
535 static void gen_wsr_ibreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v)
536 {
537 unsigned id = sr - IBREAKA;
538
539 if (id < dc->config->nibreak) {
540 TCGv_i32 tmp = tcg_const_i32(id);
541 gen_helper_wsr_ibreaka(cpu_env, tmp, v);
542 tcg_temp_free(tmp);
543 gen_jumpi_check_loop_end(dc, 0);
544 }
545 }
546
547 static void gen_wsr_dbreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v)
548 {
549 unsigned id = sr - DBREAKA;
550
551 if (id < dc->config->ndbreak) {
552 TCGv_i32 tmp = tcg_const_i32(id);
553 gen_helper_wsr_dbreaka(cpu_env, tmp, v);
554 tcg_temp_free(tmp);
555 }
556 }
557
558 static void gen_wsr_dbreakc(DisasContext *dc, uint32_t sr, TCGv_i32 v)
559 {
560 unsigned id = sr - DBREAKC;
561
562 if (id < dc->config->ndbreak) {
563 TCGv_i32 tmp = tcg_const_i32(id);
564 gen_helper_wsr_dbreakc(cpu_env, tmp, v);
565 tcg_temp_free(tmp);
566 }
567 }
568
569 static void gen_wsr_intset(DisasContext *dc, uint32_t sr, TCGv_i32 v)
570 {
571 tcg_gen_andi_i32(cpu_SR[sr], v,
572 dc->config->inttype_mask[INTTYPE_SOFTWARE]);
573 gen_helper_check_interrupts(cpu_env);
574 gen_jumpi_check_loop_end(dc, 0);
575 }
576
577 static void gen_wsr_intclear(DisasContext *dc, uint32_t sr, TCGv_i32 v)
578 {
579 TCGv_i32 tmp = tcg_temp_new_i32();
580
581 tcg_gen_andi_i32(tmp, v,
582 dc->config->inttype_mask[INTTYPE_EDGE] |
583 dc->config->inttype_mask[INTTYPE_NMI] |
584 dc->config->inttype_mask[INTTYPE_SOFTWARE]);
585 tcg_gen_andc_i32(cpu_SR[INTSET], cpu_SR[INTSET], tmp);
586 tcg_temp_free(tmp);
587 gen_helper_check_interrupts(cpu_env);
588 }
589
590 static void gen_wsr_intenable(DisasContext *dc, uint32_t sr, TCGv_i32 v)
591 {
592 tcg_gen_mov_i32(cpu_SR[sr], v);
593 gen_helper_check_interrupts(cpu_env);
594 gen_jumpi_check_loop_end(dc, 0);
595 }
596
597 static void gen_wsr_ps(DisasContext *dc, uint32_t sr, TCGv_i32 v)
598 {
599 uint32_t mask = PS_WOE | PS_CALLINC | PS_OWB |
600 PS_UM | PS_EXCM | PS_INTLEVEL;
601
602 if (option_enabled(dc, XTENSA_OPTION_MMU)) {
603 mask |= PS_RING;
604 }
605 tcg_gen_andi_i32(cpu_SR[sr], v, mask);
606 reset_used_window(dc);
607 gen_helper_check_interrupts(cpu_env);
608 /* This can change mmu index and tb->flags, so exit tb */
609 gen_jumpi_check_loop_end(dc, -1);
610 }
611
612 static void gen_wsr_debugcause(DisasContext *dc, uint32_t sr, TCGv_i32 v)
613 {
614 }
615
616 static void gen_wsr_prid(DisasContext *dc, uint32_t sr, TCGv_i32 v)
617 {
618 }
619
620 static void gen_wsr_icount(DisasContext *dc, uint32_t sr, TCGv_i32 v)
621 {
622 if (dc->icount) {
623 tcg_gen_mov_i32(dc->next_icount, v);
624 } else {
625 tcg_gen_mov_i32(cpu_SR[sr], v);
626 }
627 }
628
629 static void gen_wsr_icountlevel(DisasContext *dc, uint32_t sr, TCGv_i32 v)
630 {
631 tcg_gen_andi_i32(cpu_SR[sr], v, 0xf);
632 /* This can change tb->flags, so exit tb */
633 gen_jumpi_check_loop_end(dc, -1);
634 }
635
636 static void gen_wsr_ccompare(DisasContext *dc, uint32_t sr, TCGv_i32 v)
637 {
638 uint32_t id = sr - CCOMPARE;
639 if (id < dc->config->nccompare) {
640 uint32_t int_bit = 1 << dc->config->timerint[id];
641 gen_advance_ccount(dc);
642 tcg_gen_mov_i32(cpu_SR[sr], v);
643 tcg_gen_andi_i32(cpu_SR[INTSET], cpu_SR[INTSET], ~int_bit);
644 gen_helper_check_interrupts(cpu_env);
645 }
646 }
647
648 static void gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 s)
649 {
650 static void (* const wsr_handler[256])(DisasContext *dc,
651 uint32_t sr, TCGv_i32 v) = {
652 [LBEG] = gen_wsr_lbeg,
653 [LEND] = gen_wsr_lend,
654 [SAR] = gen_wsr_sar,
655 [BR] = gen_wsr_br,
656 [LITBASE] = gen_wsr_litbase,
657 [ACCHI] = gen_wsr_acchi,
658 [WINDOW_BASE] = gen_wsr_windowbase,
659 [WINDOW_START] = gen_wsr_windowstart,
660 [PTEVADDR] = gen_wsr_ptevaddr,
661 [RASID] = gen_wsr_rasid,
662 [ITLBCFG] = gen_wsr_tlbcfg,
663 [DTLBCFG] = gen_wsr_tlbcfg,
664 [IBREAKENABLE] = gen_wsr_ibreakenable,
665 [IBREAKA] = gen_wsr_ibreaka,
666 [IBREAKA + 1] = gen_wsr_ibreaka,
667 [DBREAKA] = gen_wsr_dbreaka,
668 [DBREAKA + 1] = gen_wsr_dbreaka,
669 [DBREAKC] = gen_wsr_dbreakc,
670 [DBREAKC + 1] = gen_wsr_dbreakc,
671 [INTSET] = gen_wsr_intset,
672 [INTCLEAR] = gen_wsr_intclear,
673 [INTENABLE] = gen_wsr_intenable,
674 [PS] = gen_wsr_ps,
675 [DEBUGCAUSE] = gen_wsr_debugcause,
676 [PRID] = gen_wsr_prid,
677 [ICOUNT] = gen_wsr_icount,
678 [ICOUNTLEVEL] = gen_wsr_icountlevel,
679 [CCOMPARE] = gen_wsr_ccompare,
680 [CCOMPARE + 1] = gen_wsr_ccompare,
681 [CCOMPARE + 2] = gen_wsr_ccompare,
682 };
683
684 if (sregnames[sr]) {
685 if (wsr_handler[sr]) {
686 wsr_handler[sr](dc, sr, s);
687 } else {
688 tcg_gen_mov_i32(cpu_SR[sr], s);
689 }
690 } else {
691 qemu_log("WSR %d not implemented, ", sr);
692 }
693 }
694
695 static void gen_load_store_alignment(DisasContext *dc, int shift,
696 TCGv_i32 addr, bool no_hw_alignment)
697 {
698 if (!option_enabled(dc, XTENSA_OPTION_UNALIGNED_EXCEPTION)) {
699 tcg_gen_andi_i32(addr, addr, ~0 << shift);
700 } else if (option_enabled(dc, XTENSA_OPTION_HW_ALIGNMENT) &&
701 no_hw_alignment) {
702 int label = gen_new_label();
703 TCGv_i32 tmp = tcg_temp_new_i32();
704 tcg_gen_andi_i32(tmp, addr, ~(~0 << shift));
705 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
706 gen_exception_cause_vaddr(dc, LOAD_STORE_ALIGNMENT_CAUSE, addr);
707 gen_set_label(label);
708 tcg_temp_free(tmp);
709 }
710 }
711
712 static void gen_waiti(DisasContext *dc, uint32_t imm4)
713 {
714 TCGv_i32 pc = tcg_const_i32(dc->next_pc);
715 TCGv_i32 intlevel = tcg_const_i32(imm4);
716 gen_advance_ccount(dc);
717 gen_helper_waiti(cpu_env, pc, intlevel);
718 tcg_temp_free(pc);
719 tcg_temp_free(intlevel);
720 }
721
722 static void gen_window_check1(DisasContext *dc, unsigned r1)
723 {
724 if (dc->tb->flags & XTENSA_TBFLAG_EXCM) {
725 return;
726 }
727 if (option_enabled(dc, XTENSA_OPTION_WINDOWED_REGISTER) &&
728 r1 / 4 > dc->used_window) {
729 TCGv_i32 pc = tcg_const_i32(dc->pc);
730 TCGv_i32 w = tcg_const_i32(r1 / 4);
731
732 dc->used_window = r1 / 4;
733 gen_advance_ccount(dc);
734 gen_helper_window_check(cpu_env, pc, w);
735
736 tcg_temp_free(w);
737 tcg_temp_free(pc);
738 }
739 }
740
741 static void gen_window_check2(DisasContext *dc, unsigned r1, unsigned r2)
742 {
743 gen_window_check1(dc, r1 > r2 ? r1 : r2);
744 }
745
746 static void gen_window_check3(DisasContext *dc, unsigned r1, unsigned r2,
747 unsigned r3)
748 {
749 gen_window_check2(dc, r1, r2 > r3 ? r2 : r3);
750 }
751
752 static TCGv_i32 gen_mac16_m(TCGv_i32 v, bool hi, bool is_unsigned)
753 {
754 TCGv_i32 m = tcg_temp_new_i32();
755
756 if (hi) {
757 (is_unsigned ? tcg_gen_shri_i32 : tcg_gen_sari_i32)(m, v, 16);
758 } else {
759 (is_unsigned ? tcg_gen_ext16u_i32 : tcg_gen_ext16s_i32)(m, v);
760 }
761 return m;
762 }
763
764 static void disas_xtensa_insn(DisasContext *dc)
765 {
766 #define HAS_OPTION_BITS(opt) do { \
767 if (!option_bits_enabled(dc, opt)) { \
768 qemu_log("Option is not enabled %s:%d\n", \
769 __FILE__, __LINE__); \
770 goto invalid_opcode; \
771 } \
772 } while (0)
773
774 #define HAS_OPTION(opt) HAS_OPTION_BITS(XTENSA_OPTION_BIT(opt))
775
776 #define TBD() qemu_log("TBD(pc = %08x): %s:%d\n", dc->pc, __FILE__, __LINE__)
777 #define RESERVED() do { \
778 qemu_log("RESERVED(pc = %08x, %02x%02x%02x): %s:%d\n", \
779 dc->pc, b0, b1, b2, __FILE__, __LINE__); \
780 goto invalid_opcode; \
781 } while (0)
782
783
784 #ifdef TARGET_WORDS_BIGENDIAN
785 #define OP0 (((b0) & 0xf0) >> 4)
786 #define OP1 (((b2) & 0xf0) >> 4)
787 #define OP2 ((b2) & 0xf)
788 #define RRR_R ((b1) & 0xf)
789 #define RRR_S (((b1) & 0xf0) >> 4)
790 #define RRR_T ((b0) & 0xf)
791 #else
792 #define OP0 (((b0) & 0xf))
793 #define OP1 (((b2) & 0xf))
794 #define OP2 (((b2) & 0xf0) >> 4)
795 #define RRR_R (((b1) & 0xf0) >> 4)
796 #define RRR_S (((b1) & 0xf))
797 #define RRR_T (((b0) & 0xf0) >> 4)
798 #endif
799 #define RRR_X ((RRR_R & 0x4) >> 2)
800 #define RRR_Y ((RRR_T & 0x4) >> 2)
801 #define RRR_W (RRR_R & 0x3)
802
803 #define RRRN_R RRR_R
804 #define RRRN_S RRR_S
805 #define RRRN_T RRR_T
806
807 #define RRI8_R RRR_R
808 #define RRI8_S RRR_S
809 #define RRI8_T RRR_T
810 #define RRI8_IMM8 (b2)
811 #define RRI8_IMM8_SE ((((b2) & 0x80) ? 0xffffff00 : 0) | RRI8_IMM8)
812
813 #ifdef TARGET_WORDS_BIGENDIAN
814 #define RI16_IMM16 (((b1) << 8) | (b2))
815 #else
816 #define RI16_IMM16 (((b2) << 8) | (b1))
817 #endif
818
819 #ifdef TARGET_WORDS_BIGENDIAN
820 #define CALL_N (((b0) & 0xc) >> 2)
821 #define CALL_OFFSET ((((b0) & 0x3) << 16) | ((b1) << 8) | (b2))
822 #else
823 #define CALL_N (((b0) & 0x30) >> 4)
824 #define CALL_OFFSET ((((b0) & 0xc0) >> 6) | ((b1) << 2) | ((b2) << 10))
825 #endif
826 #define CALL_OFFSET_SE \
827 (((CALL_OFFSET & 0x20000) ? 0xfffc0000 : 0) | CALL_OFFSET)
828
829 #define CALLX_N CALL_N
830 #ifdef TARGET_WORDS_BIGENDIAN
831 #define CALLX_M ((b0) & 0x3)
832 #else
833 #define CALLX_M (((b0) & 0xc0) >> 6)
834 #endif
835 #define CALLX_S RRR_S
836
837 #define BRI12_M CALLX_M
838 #define BRI12_S RRR_S
839 #ifdef TARGET_WORDS_BIGENDIAN
840 #define BRI12_IMM12 ((((b1) & 0xf) << 8) | (b2))
841 #else
842 #define BRI12_IMM12 ((((b1) & 0xf0) >> 4) | ((b2) << 4))
843 #endif
844 #define BRI12_IMM12_SE (((BRI12_IMM12 & 0x800) ? 0xfffff000 : 0) | BRI12_IMM12)
845
846 #define BRI8_M BRI12_M
847 #define BRI8_R RRI8_R
848 #define BRI8_S RRI8_S
849 #define BRI8_IMM8 RRI8_IMM8
850 #define BRI8_IMM8_SE RRI8_IMM8_SE
851
852 #define RSR_SR (b1)
853
854 uint8_t b0 = cpu_ldub_code(cpu_single_env, dc->pc);
855 uint8_t b1 = cpu_ldub_code(cpu_single_env, dc->pc + 1);
856 uint8_t b2 = 0;
857
858 static const uint32_t B4CONST[] = {
859 0xffffffff, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256
860 };
861
862 static const uint32_t B4CONSTU[] = {
863 32768, 65536, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256
864 };
865
866 if (OP0 >= 8) {
867 dc->next_pc = dc->pc + 2;
868 HAS_OPTION(XTENSA_OPTION_CODE_DENSITY);
869 } else {
870 dc->next_pc = dc->pc + 3;
871 b2 = cpu_ldub_code(cpu_single_env, dc->pc + 2);
872 }
873
874 switch (OP0) {
875 case 0: /*QRST*/
876 switch (OP1) {
877 case 0: /*RST0*/
878 switch (OP2) {
879 case 0: /*ST0*/
880 if ((RRR_R & 0xc) == 0x8) {
881 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
882 }
883
884 switch (RRR_R) {
885 case 0: /*SNM0*/
886 switch (CALLX_M) {
887 case 0: /*ILL*/
888 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
889 break;
890
891 case 1: /*reserved*/
892 RESERVED();
893 break;
894
895 case 2: /*JR*/
896 switch (CALLX_N) {
897 case 0: /*RET*/
898 case 2: /*JX*/
899 gen_window_check1(dc, CALLX_S);
900 gen_jump(dc, cpu_R[CALLX_S]);
901 break;
902
903 case 1: /*RETWw*/
904 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
905 {
906 TCGv_i32 tmp = tcg_const_i32(dc->pc);
907 gen_advance_ccount(dc);
908 gen_helper_retw(tmp, cpu_env, tmp);
909 gen_jump(dc, tmp);
910 tcg_temp_free(tmp);
911 }
912 break;
913
914 case 3: /*reserved*/
915 RESERVED();
916 break;
917 }
918 break;
919
920 case 3: /*CALLX*/
921 gen_window_check2(dc, CALLX_S, CALLX_N << 2);
922 switch (CALLX_N) {
923 case 0: /*CALLX0*/
924 {
925 TCGv_i32 tmp = tcg_temp_new_i32();
926 tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
927 tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
928 gen_jump(dc, tmp);
929 tcg_temp_free(tmp);
930 }
931 break;
932
933 case 1: /*CALLX4w*/
934 case 2: /*CALLX8w*/
935 case 3: /*CALLX12w*/
936 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
937 {
938 TCGv_i32 tmp = tcg_temp_new_i32();
939
940 tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
941 gen_callw(dc, CALLX_N, tmp);
942 tcg_temp_free(tmp);
943 }
944 break;
945 }
946 break;
947 }
948 break;
949
950 case 1: /*MOVSPw*/
951 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
952 gen_window_check2(dc, RRR_T, RRR_S);
953 {
954 TCGv_i32 pc = tcg_const_i32(dc->pc);
955 gen_advance_ccount(dc);
956 gen_helper_movsp(cpu_env, pc);
957 tcg_gen_mov_i32(cpu_R[RRR_T], cpu_R[RRR_S]);
958 tcg_temp_free(pc);
959 }
960 break;
961
962 case 2: /*SYNC*/
963 switch (RRR_T) {
964 case 0: /*ISYNC*/
965 break;
966
967 case 1: /*RSYNC*/
968 break;
969
970 case 2: /*ESYNC*/
971 break;
972
973 case 3: /*DSYNC*/
974 break;
975
976 case 8: /*EXCW*/
977 HAS_OPTION(XTENSA_OPTION_EXCEPTION);
978 break;
979
980 case 12: /*MEMW*/
981 break;
982
983 case 13: /*EXTW*/
984 break;
985
986 case 15: /*NOP*/
987 break;
988
989 default: /*reserved*/
990 RESERVED();
991 break;
992 }
993 break;
994
995 case 3: /*RFEIx*/
996 switch (RRR_T) {
997 case 0: /*RFETx*/
998 HAS_OPTION(XTENSA_OPTION_EXCEPTION);
999 switch (RRR_S) {
1000 case 0: /*RFEx*/
1001 gen_check_privilege(dc);
1002 tcg_gen_andi_i32(cpu_SR[PS], cpu_SR[PS], ~PS_EXCM);
1003 gen_helper_check_interrupts(cpu_env);
1004 gen_jump(dc, cpu_SR[EPC1]);
1005 break;
1006
1007 case 1: /*RFUEx*/
1008 RESERVED();
1009 break;
1010
1011 case 2: /*RFDEx*/
1012 gen_check_privilege(dc);
1013 gen_jump(dc, cpu_SR[
1014 dc->config->ndepc ? DEPC : EPC1]);
1015 break;
1016
1017 case 4: /*RFWOw*/
1018 case 5: /*RFWUw*/
1019 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1020 gen_check_privilege(dc);
1021 {
1022 TCGv_i32 tmp = tcg_const_i32(1);
1023
1024 tcg_gen_andi_i32(
1025 cpu_SR[PS], cpu_SR[PS], ~PS_EXCM);
1026 tcg_gen_shl_i32(tmp, tmp, cpu_SR[WINDOW_BASE]);
1027
1028 if (RRR_S == 4) {
1029 tcg_gen_andc_i32(cpu_SR[WINDOW_START],
1030 cpu_SR[WINDOW_START], tmp);
1031 } else {
1032 tcg_gen_or_i32(cpu_SR[WINDOW_START],
1033 cpu_SR[WINDOW_START], tmp);
1034 }
1035
1036 gen_helper_restore_owb(cpu_env);
1037 gen_helper_check_interrupts(cpu_env);
1038 gen_jump(dc, cpu_SR[EPC1]);
1039
1040 tcg_temp_free(tmp);
1041 }
1042 break;
1043
1044 default: /*reserved*/
1045 RESERVED();
1046 break;
1047 }
1048 break;
1049
1050 case 1: /*RFIx*/
1051 HAS_OPTION(XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT);
1052 if (RRR_S >= 2 && RRR_S <= dc->config->nlevel) {
1053 gen_check_privilege(dc);
1054 tcg_gen_mov_i32(cpu_SR[PS],
1055 cpu_SR[EPS2 + RRR_S - 2]);
1056 gen_helper_check_interrupts(cpu_env);
1057 gen_jump(dc, cpu_SR[EPC1 + RRR_S - 1]);
1058 } else {
1059 qemu_log("RFI %d is illegal\n", RRR_S);
1060 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
1061 }
1062 break;
1063
1064 case 2: /*RFME*/
1065 TBD();
1066 break;
1067
1068 default: /*reserved*/
1069 RESERVED();
1070 break;
1071
1072 }
1073 break;
1074
1075 case 4: /*BREAKx*/
1076 HAS_OPTION(XTENSA_OPTION_DEBUG);
1077 if (dc->debug) {
1078 gen_debug_exception(dc, DEBUGCAUSE_BI);
1079 }
1080 break;
1081
1082 case 5: /*SYSCALLx*/
1083 HAS_OPTION(XTENSA_OPTION_EXCEPTION);
1084 switch (RRR_S) {
1085 case 0: /*SYSCALLx*/
1086 gen_exception_cause(dc, SYSCALL_CAUSE);
1087 break;
1088
1089 case 1: /*SIMCALL*/
1090 if (semihosting_enabled) {
1091 gen_check_privilege(dc);
1092 gen_helper_simcall(cpu_env);
1093 } else {
1094 qemu_log("SIMCALL but semihosting is disabled\n");
1095 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
1096 }
1097 break;
1098
1099 default:
1100 RESERVED();
1101 break;
1102 }
1103 break;
1104
1105 case 6: /*RSILx*/
1106 HAS_OPTION(XTENSA_OPTION_INTERRUPT);
1107 gen_check_privilege(dc);
1108 gen_window_check1(dc, RRR_T);
1109 tcg_gen_mov_i32(cpu_R[RRR_T], cpu_SR[PS]);
1110 tcg_gen_andi_i32(cpu_SR[PS], cpu_SR[PS], ~PS_INTLEVEL);
1111 tcg_gen_ori_i32(cpu_SR[PS], cpu_SR[PS], RRR_S);
1112 gen_helper_check_interrupts(cpu_env);
1113 gen_jumpi_check_loop_end(dc, 0);
1114 break;
1115
1116 case 7: /*WAITIx*/
1117 HAS_OPTION(XTENSA_OPTION_INTERRUPT);
1118 gen_check_privilege(dc);
1119 gen_waiti(dc, RRR_S);
1120 break;
1121
1122 case 8: /*ANY4p*/
1123 case 9: /*ALL4p*/
1124 case 10: /*ANY8p*/
1125 case 11: /*ALL8p*/
1126 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
1127 {
1128 const unsigned shift = (RRR_R & 2) ? 8 : 4;
1129 TCGv_i32 mask = tcg_const_i32(
1130 ((1 << shift) - 1) << RRR_S);
1131 TCGv_i32 tmp = tcg_temp_new_i32();
1132
1133 tcg_gen_and_i32(tmp, cpu_SR[BR], mask);
1134 if (RRR_R & 1) { /*ALL*/
1135 tcg_gen_addi_i32(tmp, tmp, 1 << RRR_S);
1136 } else { /*ANY*/
1137 tcg_gen_add_i32(tmp, tmp, mask);
1138 }
1139 tcg_gen_shri_i32(tmp, tmp, RRR_S + shift);
1140 tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR],
1141 tmp, RRR_T, 1);
1142 tcg_temp_free(mask);
1143 tcg_temp_free(tmp);
1144 }
1145 break;
1146
1147 default: /*reserved*/
1148 RESERVED();
1149 break;
1150
1151 }
1152 break;
1153
1154 case 1: /*AND*/
1155 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1156 tcg_gen_and_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1157 break;
1158
1159 case 2: /*OR*/
1160 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1161 tcg_gen_or_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1162 break;
1163
1164 case 3: /*XOR*/
1165 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1166 tcg_gen_xor_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1167 break;
1168
1169 case 4: /*ST1*/
1170 switch (RRR_R) {
1171 case 0: /*SSR*/
1172 gen_window_check1(dc, RRR_S);
1173 gen_right_shift_sar(dc, cpu_R[RRR_S]);
1174 break;
1175
1176 case 1: /*SSL*/
1177 gen_window_check1(dc, RRR_S);
1178 gen_left_shift_sar(dc, cpu_R[RRR_S]);
1179 break;
1180
1181 case 2: /*SSA8L*/
1182 gen_window_check1(dc, RRR_S);
1183 {
1184 TCGv_i32 tmp = tcg_temp_new_i32();
1185 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], 3);
1186 gen_right_shift_sar(dc, tmp);
1187 tcg_temp_free(tmp);
1188 }
1189 break;
1190
1191 case 3: /*SSA8B*/
1192 gen_window_check1(dc, RRR_S);
1193 {
1194 TCGv_i32 tmp = tcg_temp_new_i32();
1195 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], 3);
1196 gen_left_shift_sar(dc, tmp);
1197 tcg_temp_free(tmp);
1198 }
1199 break;
1200
1201 case 4: /*SSAI*/
1202 {
1203 TCGv_i32 tmp = tcg_const_i32(
1204 RRR_S | ((RRR_T & 1) << 4));
1205 gen_right_shift_sar(dc, tmp);
1206 tcg_temp_free(tmp);
1207 }
1208 break;
1209
1210 case 6: /*RER*/
1211 TBD();
1212 break;
1213
1214 case 7: /*WER*/
1215 TBD();
1216 break;
1217
1218 case 8: /*ROTWw*/
1219 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1220 gen_check_privilege(dc);
1221 {
1222 TCGv_i32 tmp = tcg_const_i32(
1223 RRR_T | ((RRR_T & 8) ? 0xfffffff0 : 0));
1224 gen_helper_rotw(cpu_env, tmp);
1225 tcg_temp_free(tmp);
1226 reset_used_window(dc);
1227 }
1228 break;
1229
1230 case 14: /*NSAu*/
1231 HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA);
1232 gen_window_check2(dc, RRR_S, RRR_T);
1233 gen_helper_nsa(cpu_R[RRR_T], cpu_R[RRR_S]);
1234 break;
1235
1236 case 15: /*NSAUu*/
1237 HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA);
1238 gen_window_check2(dc, RRR_S, RRR_T);
1239 gen_helper_nsau(cpu_R[RRR_T], cpu_R[RRR_S]);
1240 break;
1241
1242 default: /*reserved*/
1243 RESERVED();
1244 break;
1245 }
1246 break;
1247
1248 case 5: /*TLB*/
1249 HAS_OPTION_BITS(
1250 XTENSA_OPTION_BIT(XTENSA_OPTION_MMU) |
1251 XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_PROTECTION) |
1252 XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_TRANSLATION));
1253 gen_check_privilege(dc);
1254 gen_window_check2(dc, RRR_S, RRR_T);
1255 {
1256 TCGv_i32 dtlb = tcg_const_i32((RRR_R & 8) != 0);
1257
1258 switch (RRR_R & 7) {
1259 case 3: /*RITLB0*/ /*RDTLB0*/
1260 gen_helper_rtlb0(cpu_R[RRR_T],
1261 cpu_env, cpu_R[RRR_S], dtlb);
1262 break;
1263
1264 case 4: /*IITLB*/ /*IDTLB*/
1265 gen_helper_itlb(cpu_env, cpu_R[RRR_S], dtlb);
1266 /* This could change memory mapping, so exit tb */
1267 gen_jumpi_check_loop_end(dc, -1);
1268 break;
1269
1270 case 5: /*PITLB*/ /*PDTLB*/
1271 tcg_gen_movi_i32(cpu_pc, dc->pc);
1272 gen_helper_ptlb(cpu_R[RRR_T],
1273 cpu_env, cpu_R[RRR_S], dtlb);
1274 break;
1275
1276 case 6: /*WITLB*/ /*WDTLB*/
1277 gen_helper_wtlb(
1278 cpu_env, cpu_R[RRR_T], cpu_R[RRR_S], dtlb);
1279 /* This could change memory mapping, so exit tb */
1280 gen_jumpi_check_loop_end(dc, -1);
1281 break;
1282
1283 case 7: /*RITLB1*/ /*RDTLB1*/
1284 gen_helper_rtlb1(cpu_R[RRR_T],
1285 cpu_env, cpu_R[RRR_S], dtlb);
1286 break;
1287
1288 default:
1289 tcg_temp_free(dtlb);
1290 RESERVED();
1291 break;
1292 }
1293 tcg_temp_free(dtlb);
1294 }
1295 break;
1296
1297 case 6: /*RT0*/
1298 gen_window_check2(dc, RRR_R, RRR_T);
1299 switch (RRR_S) {
1300 case 0: /*NEG*/
1301 tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
1302 break;
1303
1304 case 1: /*ABS*/
1305 {
1306 int label = gen_new_label();
1307 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
1308 tcg_gen_brcondi_i32(
1309 TCG_COND_GE, cpu_R[RRR_R], 0, label);
1310 tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
1311 gen_set_label(label);
1312 }
1313 break;
1314
1315 default: /*reserved*/
1316 RESERVED();
1317 break;
1318 }
1319 break;
1320
1321 case 7: /*reserved*/
1322 RESERVED();
1323 break;
1324
1325 case 8: /*ADD*/
1326 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1327 tcg_gen_add_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1328 break;
1329
1330 case 9: /*ADD**/
1331 case 10:
1332 case 11:
1333 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1334 {
1335 TCGv_i32 tmp = tcg_temp_new_i32();
1336 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], OP2 - 8);
1337 tcg_gen_add_i32(cpu_R[RRR_R], tmp, cpu_R[RRR_T]);
1338 tcg_temp_free(tmp);
1339 }
1340 break;
1341
1342 case 12: /*SUB*/
1343 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1344 tcg_gen_sub_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1345 break;
1346
1347 case 13: /*SUB**/
1348 case 14:
1349 case 15:
1350 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1351 {
1352 TCGv_i32 tmp = tcg_temp_new_i32();
1353 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], OP2 - 12);
1354 tcg_gen_sub_i32(cpu_R[RRR_R], tmp, cpu_R[RRR_T]);
1355 tcg_temp_free(tmp);
1356 }
1357 break;
1358 }
1359 break;
1360
1361 case 1: /*RST1*/
1362 switch (OP2) {
1363 case 0: /*SLLI*/
1364 case 1:
1365 gen_window_check2(dc, RRR_R, RRR_S);
1366 tcg_gen_shli_i32(cpu_R[RRR_R], cpu_R[RRR_S],
1367 32 - (RRR_T | ((OP2 & 1) << 4)));
1368 break;
1369
1370 case 2: /*SRAI*/
1371 case 3:
1372 gen_window_check2(dc, RRR_R, RRR_T);
1373 tcg_gen_sari_i32(cpu_R[RRR_R], cpu_R[RRR_T],
1374 RRR_S | ((OP2 & 1) << 4));
1375 break;
1376
1377 case 4: /*SRLI*/
1378 gen_window_check2(dc, RRR_R, RRR_T);
1379 tcg_gen_shri_i32(cpu_R[RRR_R], cpu_R[RRR_T], RRR_S);
1380 break;
1381
1382 case 6: /*XSR*/
1383 {
1384 TCGv_i32 tmp = tcg_temp_new_i32();
1385 if (RSR_SR >= 64) {
1386 gen_check_privilege(dc);
1387 }
1388 gen_window_check1(dc, RRR_T);
1389 tcg_gen_mov_i32(tmp, cpu_R[RRR_T]);
1390 gen_rsr(dc, cpu_R[RRR_T], RSR_SR);
1391 gen_wsr(dc, RSR_SR, tmp);
1392 tcg_temp_free(tmp);
1393 if (!sregnames[RSR_SR]) {
1394 TBD();
1395 }
1396 }
1397 break;
1398
1399 /*
1400 * Note: 64 bit ops are used here solely because SAR values
1401 * have range 0..63
1402 */
1403 #define gen_shift_reg(cmd, reg) do { \
1404 TCGv_i64 tmp = tcg_temp_new_i64(); \
1405 tcg_gen_extu_i32_i64(tmp, reg); \
1406 tcg_gen_##cmd##_i64(v, v, tmp); \
1407 tcg_gen_trunc_i64_i32(cpu_R[RRR_R], v); \
1408 tcg_temp_free_i64(v); \
1409 tcg_temp_free_i64(tmp); \
1410 } while (0)
1411
1412 #define gen_shift(cmd) gen_shift_reg(cmd, cpu_SR[SAR])
1413
1414 case 8: /*SRC*/
1415 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1416 {
1417 TCGv_i64 v = tcg_temp_new_i64();
1418 tcg_gen_concat_i32_i64(v, cpu_R[RRR_T], cpu_R[RRR_S]);
1419 gen_shift(shr);
1420 }
1421 break;
1422
1423 case 9: /*SRL*/
1424 gen_window_check2(dc, RRR_R, RRR_T);
1425 if (dc->sar_5bit) {
1426 tcg_gen_shr_i32(cpu_R[RRR_R], cpu_R[RRR_T], cpu_SR[SAR]);
1427 } else {
1428 TCGv_i64 v = tcg_temp_new_i64();
1429 tcg_gen_extu_i32_i64(v, cpu_R[RRR_T]);
1430 gen_shift(shr);
1431 }
1432 break;
1433
1434 case 10: /*SLL*/
1435 gen_window_check2(dc, RRR_R, RRR_S);
1436 if (dc->sar_m32_5bit) {
1437 tcg_gen_shl_i32(cpu_R[RRR_R], cpu_R[RRR_S], dc->sar_m32);
1438 } else {
1439 TCGv_i64 v = tcg_temp_new_i64();
1440 TCGv_i32 s = tcg_const_i32(32);
1441 tcg_gen_sub_i32(s, s, cpu_SR[SAR]);
1442 tcg_gen_andi_i32(s, s, 0x3f);
1443 tcg_gen_extu_i32_i64(v, cpu_R[RRR_S]);
1444 gen_shift_reg(shl, s);
1445 tcg_temp_free(s);
1446 }
1447 break;
1448
1449 case 11: /*SRA*/
1450 gen_window_check2(dc, RRR_R, RRR_T);
1451 if (dc->sar_5bit) {
1452 tcg_gen_sar_i32(cpu_R[RRR_R], cpu_R[RRR_T], cpu_SR[SAR]);
1453 } else {
1454 TCGv_i64 v = tcg_temp_new_i64();
1455 tcg_gen_ext_i32_i64(v, cpu_R[RRR_T]);
1456 gen_shift(sar);
1457 }
1458 break;
1459 #undef gen_shift
1460 #undef gen_shift_reg
1461
1462 case 12: /*MUL16U*/
1463 HAS_OPTION(XTENSA_OPTION_16_BIT_IMUL);
1464 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1465 {
1466 TCGv_i32 v1 = tcg_temp_new_i32();
1467 TCGv_i32 v2 = tcg_temp_new_i32();
1468 tcg_gen_ext16u_i32(v1, cpu_R[RRR_S]);
1469 tcg_gen_ext16u_i32(v2, cpu_R[RRR_T]);
1470 tcg_gen_mul_i32(cpu_R[RRR_R], v1, v2);
1471 tcg_temp_free(v2);
1472 tcg_temp_free(v1);
1473 }
1474 break;
1475
1476 case 13: /*MUL16S*/
1477 HAS_OPTION(XTENSA_OPTION_16_BIT_IMUL);
1478 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1479 {
1480 TCGv_i32 v1 = tcg_temp_new_i32();
1481 TCGv_i32 v2 = tcg_temp_new_i32();
1482 tcg_gen_ext16s_i32(v1, cpu_R[RRR_S]);
1483 tcg_gen_ext16s_i32(v2, cpu_R[RRR_T]);
1484 tcg_gen_mul_i32(cpu_R[RRR_R], v1, v2);
1485 tcg_temp_free(v2);
1486 tcg_temp_free(v1);
1487 }
1488 break;
1489
1490 default: /*reserved*/
1491 RESERVED();
1492 break;
1493 }
1494 break;
1495
1496 case 2: /*RST2*/
1497 if (OP2 >= 8) {
1498 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1499 }
1500
1501 if (OP2 >= 12) {
1502 HAS_OPTION(XTENSA_OPTION_32_BIT_IDIV);
1503 int label = gen_new_label();
1504 tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_T], 0, label);
1505 gen_exception_cause(dc, INTEGER_DIVIDE_BY_ZERO_CAUSE);
1506 gen_set_label(label);
1507 }
1508
1509 switch (OP2) {
1510 #define BOOLEAN_LOGIC(fn, r, s, t) \
1511 do { \
1512 HAS_OPTION(XTENSA_OPTION_BOOLEAN); \
1513 TCGv_i32 tmp1 = tcg_temp_new_i32(); \
1514 TCGv_i32 tmp2 = tcg_temp_new_i32(); \
1515 \
1516 tcg_gen_shri_i32(tmp1, cpu_SR[BR], s); \
1517 tcg_gen_shri_i32(tmp2, cpu_SR[BR], t); \
1518 tcg_gen_##fn##_i32(tmp1, tmp1, tmp2); \
1519 tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR], tmp1, r, 1); \
1520 tcg_temp_free(tmp1); \
1521 tcg_temp_free(tmp2); \
1522 } while (0)
1523
1524 case 0: /*ANDBp*/
1525 BOOLEAN_LOGIC(and, RRR_R, RRR_S, RRR_T);
1526 break;
1527
1528 case 1: /*ANDBCp*/
1529 BOOLEAN_LOGIC(andc, RRR_R, RRR_S, RRR_T);
1530 break;
1531
1532 case 2: /*ORBp*/
1533 BOOLEAN_LOGIC(or, RRR_R, RRR_S, RRR_T);
1534 break;
1535
1536 case 3: /*ORBCp*/
1537 BOOLEAN_LOGIC(orc, RRR_R, RRR_S, RRR_T);
1538 break;
1539
1540 case 4: /*XORBp*/
1541 BOOLEAN_LOGIC(xor, RRR_R, RRR_S, RRR_T);
1542 break;
1543
1544 #undef BOOLEAN_LOGIC
1545
1546 case 8: /*MULLi*/
1547 HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL);
1548 tcg_gen_mul_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1549 break;
1550
1551 case 10: /*MULUHi*/
1552 case 11: /*MULSHi*/
1553 HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL_HIGH);
1554 {
1555 TCGv_i64 r = tcg_temp_new_i64();
1556 TCGv_i64 s = tcg_temp_new_i64();
1557 TCGv_i64 t = tcg_temp_new_i64();
1558
1559 if (OP2 == 10) {
1560 tcg_gen_extu_i32_i64(s, cpu_R[RRR_S]);
1561 tcg_gen_extu_i32_i64(t, cpu_R[RRR_T]);
1562 } else {
1563 tcg_gen_ext_i32_i64(s, cpu_R[RRR_S]);
1564 tcg_gen_ext_i32_i64(t, cpu_R[RRR_T]);
1565 }
1566 tcg_gen_mul_i64(r, s, t);
1567 tcg_gen_shri_i64(r, r, 32);
1568 tcg_gen_trunc_i64_i32(cpu_R[RRR_R], r);
1569
1570 tcg_temp_free_i64(r);
1571 tcg_temp_free_i64(s);
1572 tcg_temp_free_i64(t);
1573 }
1574 break;
1575
1576 case 12: /*QUOUi*/
1577 tcg_gen_divu_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1578 break;
1579
1580 case 13: /*QUOSi*/
1581 case 15: /*REMSi*/
1582 {
1583 int label1 = gen_new_label();
1584 int label2 = gen_new_label();
1585
1586 tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_S], 0x80000000,
1587 label1);
1588 tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_T], 0xffffffff,
1589 label1);
1590 tcg_gen_movi_i32(cpu_R[RRR_R],
1591 OP2 == 13 ? 0x80000000 : 0);
1592 tcg_gen_br(label2);
1593 gen_set_label(label1);
1594 if (OP2 == 13) {
1595 tcg_gen_div_i32(cpu_R[RRR_R],
1596 cpu_R[RRR_S], cpu_R[RRR_T]);
1597 } else {
1598 tcg_gen_rem_i32(cpu_R[RRR_R],
1599 cpu_R[RRR_S], cpu_R[RRR_T]);
1600 }
1601 gen_set_label(label2);
1602 }
1603 break;
1604
1605 case 14: /*REMUi*/
1606 tcg_gen_remu_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1607 break;
1608
1609 default: /*reserved*/
1610 RESERVED();
1611 break;
1612 }
1613 break;
1614
1615 case 3: /*RST3*/
1616 switch (OP2) {
1617 case 0: /*RSR*/
1618 if (RSR_SR >= 64) {
1619 gen_check_privilege(dc);
1620 }
1621 gen_window_check1(dc, RRR_T);
1622 gen_rsr(dc, cpu_R[RRR_T], RSR_SR);
1623 if (!sregnames[RSR_SR]) {
1624 TBD();
1625 }
1626 break;
1627
1628 case 1: /*WSR*/
1629 if (RSR_SR >= 64) {
1630 gen_check_privilege(dc);
1631 }
1632 gen_window_check1(dc, RRR_T);
1633 gen_wsr(dc, RSR_SR, cpu_R[RRR_T]);
1634 if (!sregnames[RSR_SR]) {
1635 TBD();
1636 }
1637 break;
1638
1639 case 2: /*SEXTu*/
1640 HAS_OPTION(XTENSA_OPTION_MISC_OP_SEXT);
1641 gen_window_check2(dc, RRR_R, RRR_S);
1642 {
1643 int shift = 24 - RRR_T;
1644
1645 if (shift == 24) {
1646 tcg_gen_ext8s_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1647 } else if (shift == 16) {
1648 tcg_gen_ext16s_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1649 } else {
1650 TCGv_i32 tmp = tcg_temp_new_i32();
1651 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], shift);
1652 tcg_gen_sari_i32(cpu_R[RRR_R], tmp, shift);
1653 tcg_temp_free(tmp);
1654 }
1655 }
1656 break;
1657
1658 case 3: /*CLAMPSu*/
1659 HAS_OPTION(XTENSA_OPTION_MISC_OP_CLAMPS);
1660 gen_window_check2(dc, RRR_R, RRR_S);
1661 {
1662 TCGv_i32 tmp1 = tcg_temp_new_i32();
1663 TCGv_i32 tmp2 = tcg_temp_new_i32();
1664 int label = gen_new_label();
1665
1666 tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 24 - RRR_T);
1667 tcg_gen_xor_i32(tmp2, tmp1, cpu_R[RRR_S]);
1668 tcg_gen_andi_i32(tmp2, tmp2, 0xffffffff << (RRR_T + 7));
1669 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1670 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp2, 0, label);
1671
1672 tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 31);
1673 tcg_gen_xori_i32(cpu_R[RRR_R], tmp1,
1674 0xffffffff >> (25 - RRR_T));
1675
1676 gen_set_label(label);
1677
1678 tcg_temp_free(tmp1);
1679 tcg_temp_free(tmp2);
1680 }
1681 break;
1682
1683 case 4: /*MINu*/
1684 case 5: /*MAXu*/
1685 case 6: /*MINUu*/
1686 case 7: /*MAXUu*/
1687 HAS_OPTION(XTENSA_OPTION_MISC_OP_MINMAX);
1688 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1689 {
1690 static const TCGCond cond[] = {
1691 TCG_COND_LE,
1692 TCG_COND_GE,
1693 TCG_COND_LEU,
1694 TCG_COND_GEU
1695 };
1696 int label = gen_new_label();
1697
1698 if (RRR_R != RRR_T) {
1699 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1700 tcg_gen_brcond_i32(cond[OP2 - 4],
1701 cpu_R[RRR_S], cpu_R[RRR_T], label);
1702 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
1703 } else {
1704 tcg_gen_brcond_i32(cond[OP2 - 4],
1705 cpu_R[RRR_T], cpu_R[RRR_S], label);
1706 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1707 }
1708 gen_set_label(label);
1709 }
1710 break;
1711
1712 case 8: /*MOVEQZ*/
1713 case 9: /*MOVNEZ*/
1714 case 10: /*MOVLTZ*/
1715 case 11: /*MOVGEZ*/
1716 gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
1717 {
1718 static const TCGCond cond[] = {
1719 TCG_COND_NE,
1720 TCG_COND_EQ,
1721 TCG_COND_GE,
1722 TCG_COND_LT
1723 };
1724 int label = gen_new_label();
1725 tcg_gen_brcondi_i32(cond[OP2 - 8], cpu_R[RRR_T], 0, label);
1726 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1727 gen_set_label(label);
1728 }
1729 break;
1730
1731 case 12: /*MOVFp*/
1732 case 13: /*MOVTp*/
1733 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
1734 gen_window_check2(dc, RRR_R, RRR_S);
1735 {
1736 int label = gen_new_label();
1737 TCGv_i32 tmp = tcg_temp_new_i32();
1738
1739 tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRR_T);
1740 tcg_gen_brcondi_i32(
1741 OP2 & 1 ? TCG_COND_EQ : TCG_COND_NE,
1742 tmp, 0, label);
1743 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1744 gen_set_label(label);
1745 tcg_temp_free(tmp);
1746 }
1747 break;
1748
1749 case 14: /*RUR*/
1750 gen_window_check1(dc, RRR_R);
1751 {
1752 int st = (RRR_S << 4) + RRR_T;
1753 if (uregnames[st]) {
1754 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_UR[st]);
1755 } else {
1756 qemu_log("RUR %d not implemented, ", st);
1757 TBD();
1758 }
1759 }
1760 break;
1761
1762 case 15: /*WUR*/
1763 gen_window_check1(dc, RRR_T);
1764 {
1765 if (uregnames[RSR_SR]) {
1766 tcg_gen_mov_i32(cpu_UR[RSR_SR], cpu_R[RRR_T]);
1767 } else {
1768 qemu_log("WUR %d not implemented, ", RSR_SR);
1769 TBD();
1770 }
1771 }
1772 break;
1773
1774 }
1775 break;
1776
1777 case 4: /*EXTUI*/
1778 case 5:
1779 gen_window_check2(dc, RRR_R, RRR_T);
1780 {
1781 int shiftimm = RRR_S | (OP1 << 4);
1782 int maskimm = (1 << (OP2 + 1)) - 1;
1783
1784 TCGv_i32 tmp = tcg_temp_new_i32();
1785 tcg_gen_shri_i32(tmp, cpu_R[RRR_T], shiftimm);
1786 tcg_gen_andi_i32(cpu_R[RRR_R], tmp, maskimm);
1787 tcg_temp_free(tmp);
1788 }
1789 break;
1790
1791 case 6: /*CUST0*/
1792 RESERVED();
1793 break;
1794
1795 case 7: /*CUST1*/
1796 RESERVED();
1797 break;
1798
1799 case 8: /*LSCXp*/
1800 HAS_OPTION(XTENSA_OPTION_COPROCESSOR);
1801 TBD();
1802 break;
1803
1804 case 9: /*LSC4*/
1805 gen_window_check2(dc, RRR_S, RRR_T);
1806 switch (OP2) {
1807 case 0: /*L32E*/
1808 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1809 gen_check_privilege(dc);
1810 {
1811 TCGv_i32 addr = tcg_temp_new_i32();
1812 tcg_gen_addi_i32(addr, cpu_R[RRR_S],
1813 (0xffffffc0 | (RRR_R << 2)));
1814 tcg_gen_qemu_ld32u(cpu_R[RRR_T], addr, dc->ring);
1815 tcg_temp_free(addr);
1816 }
1817 break;
1818
1819 case 4: /*S32E*/
1820 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1821 gen_check_privilege(dc);
1822 {
1823 TCGv_i32 addr = tcg_temp_new_i32();
1824 tcg_gen_addi_i32(addr, cpu_R[RRR_S],
1825 (0xffffffc0 | (RRR_R << 2)));
1826 tcg_gen_qemu_st32(cpu_R[RRR_T], addr, dc->ring);
1827 tcg_temp_free(addr);
1828 }
1829 break;
1830
1831 default:
1832 RESERVED();
1833 break;
1834 }
1835 break;
1836
1837 case 10: /*FP0*/
1838 HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
1839 TBD();
1840 break;
1841
1842 case 11: /*FP1*/
1843 HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
1844 TBD();
1845 break;
1846
1847 default: /*reserved*/
1848 RESERVED();
1849 break;
1850 }
1851 break;
1852
1853 case 1: /*L32R*/
1854 gen_window_check1(dc, RRR_T);
1855 {
1856 TCGv_i32 tmp = tcg_const_i32(
1857 ((dc->tb->flags & XTENSA_TBFLAG_LITBASE) ?
1858 0 : ((dc->pc + 3) & ~3)) +
1859 (0xfffc0000 | (RI16_IMM16 << 2)));
1860
1861 if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
1862 tcg_gen_add_i32(tmp, tmp, dc->litbase);
1863 }
1864 tcg_gen_qemu_ld32u(cpu_R[RRR_T], tmp, dc->cring);
1865 tcg_temp_free(tmp);
1866 }
1867 break;
1868
1869 case 2: /*LSAI*/
1870 #define gen_load_store(type, shift) do { \
1871 TCGv_i32 addr = tcg_temp_new_i32(); \
1872 gen_window_check2(dc, RRI8_S, RRI8_T); \
1873 tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << shift); \
1874 if (shift) { \
1875 gen_load_store_alignment(dc, shift, addr, false); \
1876 } \
1877 tcg_gen_qemu_##type(cpu_R[RRI8_T], addr, dc->cring); \
1878 tcg_temp_free(addr); \
1879 } while (0)
1880
1881 switch (RRI8_R) {
1882 case 0: /*L8UI*/
1883 gen_load_store(ld8u, 0);
1884 break;
1885
1886 case 1: /*L16UI*/
1887 gen_load_store(ld16u, 1);
1888 break;
1889
1890 case 2: /*L32I*/
1891 gen_load_store(ld32u, 2);
1892 break;
1893
1894 case 4: /*S8I*/
1895 gen_load_store(st8, 0);
1896 break;
1897
1898 case 5: /*S16I*/
1899 gen_load_store(st16, 1);
1900 break;
1901
1902 case 6: /*S32I*/
1903 gen_load_store(st32, 2);
1904 break;
1905
1906 case 7: /*CACHEc*/
1907 if (RRI8_T < 8) {
1908 HAS_OPTION(XTENSA_OPTION_DCACHE);
1909 }
1910
1911 switch (RRI8_T) {
1912 case 0: /*DPFRc*/
1913 break;
1914
1915 case 1: /*DPFWc*/
1916 break;
1917
1918 case 2: /*DPFROc*/
1919 break;
1920
1921 case 3: /*DPFWOc*/
1922 break;
1923
1924 case 4: /*DHWBc*/
1925 break;
1926
1927 case 5: /*DHWBIc*/
1928 break;
1929
1930 case 6: /*DHIc*/
1931 break;
1932
1933 case 7: /*DIIc*/
1934 break;
1935
1936 case 8: /*DCEc*/
1937 switch (OP1) {
1938 case 0: /*DPFLl*/
1939 HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
1940 break;
1941
1942 case 2: /*DHUl*/
1943 HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
1944 break;
1945
1946 case 3: /*DIUl*/
1947 HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
1948 break;
1949
1950 case 4: /*DIWBc*/
1951 HAS_OPTION(XTENSA_OPTION_DCACHE);
1952 break;
1953
1954 case 5: /*DIWBIc*/
1955 HAS_OPTION(XTENSA_OPTION_DCACHE);
1956 break;
1957
1958 default: /*reserved*/
1959 RESERVED();
1960 break;
1961
1962 }
1963 break;
1964
1965 case 12: /*IPFc*/
1966 HAS_OPTION(XTENSA_OPTION_ICACHE);
1967 break;
1968
1969 case 13: /*ICEc*/
1970 switch (OP1) {
1971 case 0: /*IPFLl*/
1972 HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
1973 break;
1974
1975 case 2: /*IHUl*/
1976 HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
1977 break;
1978
1979 case 3: /*IIUl*/
1980 HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
1981 break;
1982
1983 default: /*reserved*/
1984 RESERVED();
1985 break;
1986 }
1987 break;
1988
1989 case 14: /*IHIc*/
1990 HAS_OPTION(XTENSA_OPTION_ICACHE);
1991 break;
1992
1993 case 15: /*IIIc*/
1994 HAS_OPTION(XTENSA_OPTION_ICACHE);
1995 break;
1996
1997 default: /*reserved*/
1998 RESERVED();
1999 break;
2000 }
2001 break;
2002
2003 case 9: /*L16SI*/
2004 gen_load_store(ld16s, 1);
2005 break;
2006 #undef gen_load_store
2007
2008 case 10: /*MOVI*/
2009 gen_window_check1(dc, RRI8_T);
2010 tcg_gen_movi_i32(cpu_R[RRI8_T],
2011 RRI8_IMM8 | (RRI8_S << 8) |
2012 ((RRI8_S & 0x8) ? 0xfffff000 : 0));
2013 break;
2014
2015 #define gen_load_store_no_hw_align(type) do { \
2016 TCGv_i32 addr = tcg_temp_local_new_i32(); \
2017 gen_window_check2(dc, RRI8_S, RRI8_T); \
2018 tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2); \
2019 gen_load_store_alignment(dc, 2, addr, true); \
2020 tcg_gen_qemu_##type(cpu_R[RRI8_T], addr, dc->cring); \
2021 tcg_temp_free(addr); \
2022 } while (0)
2023
2024 case 11: /*L32AIy*/
2025 HAS_OPTION(XTENSA_OPTION_MP_SYNCHRO);
2026 gen_load_store_no_hw_align(ld32u); /*TODO acquire?*/
2027 break;
2028
2029 case 12: /*ADDI*/
2030 gen_window_check2(dc, RRI8_S, RRI8_T);
2031 tcg_gen_addi_i32(cpu_R[RRI8_T], cpu_R[RRI8_S], RRI8_IMM8_SE);
2032 break;
2033
2034 case 13: /*ADDMI*/
2035 gen_window_check2(dc, RRI8_S, RRI8_T);
2036 tcg_gen_addi_i32(cpu_R[RRI8_T], cpu_R[RRI8_S], RRI8_IMM8_SE << 8);
2037 break;
2038
2039 case 14: /*S32C1Iy*/
2040 HAS_OPTION(XTENSA_OPTION_CONDITIONAL_STORE);
2041 gen_window_check2(dc, RRI8_S, RRI8_T);
2042 {
2043 int label = gen_new_label();
2044 TCGv_i32 tmp = tcg_temp_local_new_i32();
2045 TCGv_i32 addr = tcg_temp_local_new_i32();
2046
2047 tcg_gen_mov_i32(tmp, cpu_R[RRI8_T]);
2048 tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2);
2049 gen_load_store_alignment(dc, 2, addr, true);
2050 tcg_gen_qemu_ld32u(cpu_R[RRI8_T], addr, dc->cring);
2051 tcg_gen_brcond_i32(TCG_COND_NE, cpu_R[RRI8_T],
2052 cpu_SR[SCOMPARE1], label);
2053
2054 tcg_gen_qemu_st32(tmp, addr, dc->cring);
2055
2056 gen_set_label(label);
2057 tcg_temp_free(addr);
2058 tcg_temp_free(tmp);
2059 }
2060 break;
2061
2062 case 15: /*S32RIy*/
2063 HAS_OPTION(XTENSA_OPTION_MP_SYNCHRO);
2064 gen_load_store_no_hw_align(st32); /*TODO release?*/
2065 break;
2066 #undef gen_load_store_no_hw_align
2067
2068 default: /*reserved*/
2069 RESERVED();
2070 break;
2071 }
2072 break;
2073
2074 case 3: /*LSCIp*/
2075 HAS_OPTION(XTENSA_OPTION_COPROCESSOR);
2076 TBD();
2077 break;
2078
2079 case 4: /*MAC16d*/
2080 HAS_OPTION(XTENSA_OPTION_MAC16);
2081 {
2082 enum {
2083 MAC16_UMUL = 0x0,
2084 MAC16_MUL = 0x4,
2085 MAC16_MULA = 0x8,
2086 MAC16_MULS = 0xc,
2087 MAC16_NONE = 0xf,
2088 } op = OP1 & 0xc;
2089 bool is_m1_sr = (OP2 & 0x3) == 2;
2090 bool is_m2_sr = (OP2 & 0xc) == 0;
2091 uint32_t ld_offset = 0;
2092
2093 if (OP2 > 9) {
2094 RESERVED();
2095 }
2096
2097 switch (OP2 & 2) {
2098 case 0: /*MACI?/MACC?*/
2099 is_m1_sr = true;
2100 ld_offset = (OP2 & 1) ? -4 : 4;
2101
2102 if (OP2 >= 8) { /*MACI/MACC*/
2103 if (OP1 == 0) { /*LDINC/LDDEC*/
2104 op = MAC16_NONE;
2105 } else {
2106 RESERVED();
2107 }
2108 } else if (op != MAC16_MULA) { /*MULA.*.*.LDINC/LDDEC*/
2109 RESERVED();
2110 }
2111 break;
2112
2113 case 2: /*MACD?/MACA?*/
2114 if (op == MAC16_UMUL && OP2 != 7) { /*UMUL only in MACAA*/
2115 RESERVED();
2116 }
2117 break;
2118 }
2119
2120 if (op != MAC16_NONE) {
2121 if (!is_m1_sr) {
2122 gen_window_check1(dc, RRR_S);
2123 }
2124 if (!is_m2_sr) {
2125 gen_window_check1(dc, RRR_T);
2126 }
2127 }
2128
2129 {
2130 TCGv_i32 vaddr = tcg_temp_new_i32();
2131 TCGv_i32 mem32 = tcg_temp_new_i32();
2132
2133 if (ld_offset) {
2134 gen_window_check1(dc, RRR_S);
2135 tcg_gen_addi_i32(vaddr, cpu_R[RRR_S], ld_offset);
2136 gen_load_store_alignment(dc, 2, vaddr, false);
2137 tcg_gen_qemu_ld32u(mem32, vaddr, dc->cring);
2138 }
2139 if (op != MAC16_NONE) {
2140 TCGv_i32 m1 = gen_mac16_m(
2141 is_m1_sr ? cpu_SR[MR + RRR_X] : cpu_R[RRR_S],
2142 OP1 & 1, op == MAC16_UMUL);
2143 TCGv_i32 m2 = gen_mac16_m(
2144 is_m2_sr ? cpu_SR[MR + 2 + RRR_Y] : cpu_R[RRR_T],
2145 OP1 & 2, op == MAC16_UMUL);
2146
2147 if (op == MAC16_MUL || op == MAC16_UMUL) {
2148 tcg_gen_mul_i32(cpu_SR[ACCLO], m1, m2);
2149 if (op == MAC16_UMUL) {
2150 tcg_gen_movi_i32(cpu_SR[ACCHI], 0);
2151 } else {
2152 tcg_gen_sari_i32(cpu_SR[ACCHI], cpu_SR[ACCLO], 31);
2153 }
2154 } else {
2155 TCGv_i32 res = tcg_temp_new_i32();
2156 TCGv_i64 res64 = tcg_temp_new_i64();
2157 TCGv_i64 tmp = tcg_temp_new_i64();
2158
2159 tcg_gen_mul_i32(res, m1, m2);
2160 tcg_gen_ext_i32_i64(res64, res);
2161 tcg_gen_concat_i32_i64(tmp,
2162 cpu_SR[ACCLO], cpu_SR[ACCHI]);
2163 if (op == MAC16_MULA) {
2164 tcg_gen_add_i64(tmp, tmp, res64);
2165 } else {
2166 tcg_gen_sub_i64(tmp, tmp, res64);
2167 }
2168 tcg_gen_trunc_i64_i32(cpu_SR[ACCLO], tmp);
2169 tcg_gen_shri_i64(tmp, tmp, 32);
2170 tcg_gen_trunc_i64_i32(cpu_SR[ACCHI], tmp);
2171 tcg_gen_ext8s_i32(cpu_SR[ACCHI], cpu_SR[ACCHI]);
2172
2173 tcg_temp_free(res);
2174 tcg_temp_free_i64(res64);
2175 tcg_temp_free_i64(tmp);
2176 }
2177 tcg_temp_free(m1);
2178 tcg_temp_free(m2);
2179 }
2180 if (ld_offset) {
2181 tcg_gen_mov_i32(cpu_R[RRR_S], vaddr);
2182 tcg_gen_mov_i32(cpu_SR[MR + RRR_W], mem32);
2183 }
2184 tcg_temp_free(vaddr);
2185 tcg_temp_free(mem32);
2186 }
2187 }
2188 break;
2189
2190 case 5: /*CALLN*/
2191 switch (CALL_N) {
2192 case 0: /*CALL0*/
2193 tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
2194 gen_jumpi(dc, (dc->pc & ~3) + (CALL_OFFSET_SE << 2) + 4, 0);
2195 break;
2196
2197 case 1: /*CALL4w*/
2198 case 2: /*CALL8w*/
2199 case 3: /*CALL12w*/
2200 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
2201 gen_window_check1(dc, CALL_N << 2);
2202 gen_callwi(dc, CALL_N,
2203 (dc->pc & ~3) + (CALL_OFFSET_SE << 2) + 4, 0);
2204 break;
2205 }
2206 break;
2207
2208 case 6: /*SI*/
2209 switch (CALL_N) {
2210 case 0: /*J*/
2211 gen_jumpi(dc, dc->pc + 4 + CALL_OFFSET_SE, 0);
2212 break;
2213
2214 case 1: /*BZ*/
2215 gen_window_check1(dc, BRI12_S);
2216 {
2217 static const TCGCond cond[] = {
2218 TCG_COND_EQ, /*BEQZ*/
2219 TCG_COND_NE, /*BNEZ*/
2220 TCG_COND_LT, /*BLTZ*/
2221 TCG_COND_GE, /*BGEZ*/
2222 };
2223
2224 gen_brcondi(dc, cond[BRI12_M & 3], cpu_R[BRI12_S], 0,
2225 4 + BRI12_IMM12_SE);
2226 }
2227 break;
2228
2229 case 2: /*BI0*/
2230 gen_window_check1(dc, BRI8_S);
2231 {
2232 static const TCGCond cond[] = {
2233 TCG_COND_EQ, /*BEQI*/
2234 TCG_COND_NE, /*BNEI*/
2235 TCG_COND_LT, /*BLTI*/
2236 TCG_COND_GE, /*BGEI*/
2237 };
2238
2239 gen_brcondi(dc, cond[BRI8_M & 3],
2240 cpu_R[BRI8_S], B4CONST[BRI8_R], 4 + BRI8_IMM8_SE);
2241 }
2242 break;
2243
2244 case 3: /*BI1*/
2245 switch (BRI8_M) {
2246 case 0: /*ENTRYw*/
2247 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
2248 {
2249 TCGv_i32 pc = tcg_const_i32(dc->pc);
2250 TCGv_i32 s = tcg_const_i32(BRI12_S);
2251 TCGv_i32 imm = tcg_const_i32(BRI12_IMM12);
2252 gen_advance_ccount(dc);
2253 gen_helper_entry(cpu_env, pc, s, imm);
2254 tcg_temp_free(imm);
2255 tcg_temp_free(s);
2256 tcg_temp_free(pc);
2257 reset_used_window(dc);
2258 }
2259 break;
2260
2261 case 1: /*B1*/
2262 switch (BRI8_R) {
2263 case 0: /*BFp*/
2264 case 1: /*BTp*/
2265 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
2266 {
2267 TCGv_i32 tmp = tcg_temp_new_i32();
2268 tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRI8_S);
2269 gen_brcondi(dc,
2270 BRI8_R == 1 ? TCG_COND_NE : TCG_COND_EQ,
2271 tmp, 0, 4 + RRI8_IMM8_SE);
2272 tcg_temp_free(tmp);
2273 }
2274 break;
2275
2276 case 8: /*LOOP*/
2277 case 9: /*LOOPNEZ*/
2278 case 10: /*LOOPGTZ*/
2279 HAS_OPTION(XTENSA_OPTION_LOOP);
2280 gen_window_check1(dc, RRI8_S);
2281 {
2282 uint32_t lend = dc->pc + RRI8_IMM8 + 4;
2283 TCGv_i32 tmp = tcg_const_i32(lend);
2284
2285 tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_R[RRI8_S], 1);
2286 tcg_gen_movi_i32(cpu_SR[LBEG], dc->next_pc);
2287 gen_helper_wsr_lend(cpu_env, tmp);
2288 tcg_temp_free(tmp);
2289
2290 if (BRI8_R > 8) {
2291 int label = gen_new_label();
2292 tcg_gen_brcondi_i32(
2293 BRI8_R == 9 ? TCG_COND_NE : TCG_COND_GT,
2294 cpu_R[RRI8_S], 0, label);
2295 gen_jumpi(dc, lend, 1);
2296 gen_set_label(label);
2297 }
2298
2299 gen_jumpi(dc, dc->next_pc, 0);
2300 }
2301 break;
2302
2303 default: /*reserved*/
2304 RESERVED();
2305 break;
2306
2307 }
2308 break;
2309
2310 case 2: /*BLTUI*/
2311 case 3: /*BGEUI*/
2312 gen_window_check1(dc, BRI8_S);
2313 gen_brcondi(dc, BRI8_M == 2 ? TCG_COND_LTU : TCG_COND_GEU,
2314 cpu_R[BRI8_S], B4CONSTU[BRI8_R], 4 + BRI8_IMM8_SE);
2315 break;
2316 }
2317 break;
2318
2319 }
2320 break;
2321
2322 case 7: /*B*/
2323 {
2324 TCGCond eq_ne = (RRI8_R & 8) ? TCG_COND_NE : TCG_COND_EQ;
2325
2326 switch (RRI8_R & 7) {
2327 case 0: /*BNONE*/ /*BANY*/
2328 gen_window_check2(dc, RRI8_S, RRI8_T);
2329 {
2330 TCGv_i32 tmp = tcg_temp_new_i32();
2331 tcg_gen_and_i32(tmp, cpu_R[RRI8_S], cpu_R[RRI8_T]);
2332 gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
2333 tcg_temp_free(tmp);
2334 }
2335 break;
2336
2337 case 1: /*BEQ*/ /*BNE*/
2338 case 2: /*BLT*/ /*BGE*/
2339 case 3: /*BLTU*/ /*BGEU*/
2340 gen_window_check2(dc, RRI8_S, RRI8_T);
2341 {
2342 static const TCGCond cond[] = {
2343 [1] = TCG_COND_EQ,
2344 [2] = TCG_COND_LT,
2345 [3] = TCG_COND_LTU,
2346 [9] = TCG_COND_NE,
2347 [10] = TCG_COND_GE,
2348 [11] = TCG_COND_GEU,
2349 };
2350 gen_brcond(dc, cond[RRI8_R], cpu_R[RRI8_S], cpu_R[RRI8_T],
2351 4 + RRI8_IMM8_SE);
2352 }
2353 break;
2354
2355 case 4: /*BALL*/ /*BNALL*/
2356 gen_window_check2(dc, RRI8_S, RRI8_T);
2357 {
2358 TCGv_i32 tmp = tcg_temp_new_i32();
2359 tcg_gen_and_i32(tmp, cpu_R[RRI8_S], cpu_R[RRI8_T]);
2360 gen_brcond(dc, eq_ne, tmp, cpu_R[RRI8_T],
2361 4 + RRI8_IMM8_SE);
2362 tcg_temp_free(tmp);
2363 }
2364 break;
2365
2366 case 5: /*BBC*/ /*BBS*/
2367 gen_window_check2(dc, RRI8_S, RRI8_T);
2368 {
2369 TCGv_i32 bit = tcg_const_i32(1);
2370 TCGv_i32 tmp = tcg_temp_new_i32();
2371 tcg_gen_andi_i32(tmp, cpu_R[RRI8_T], 0x1f);
2372 tcg_gen_shl_i32(bit, bit, tmp);
2373 tcg_gen_and_i32(tmp, cpu_R[RRI8_S], bit);
2374 gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
2375 tcg_temp_free(tmp);
2376 tcg_temp_free(bit);
2377 }
2378 break;
2379
2380 case 6: /*BBCI*/ /*BBSI*/
2381 case 7:
2382 gen_window_check1(dc, RRI8_S);
2383 {
2384 TCGv_i32 tmp = tcg_temp_new_i32();
2385 tcg_gen_andi_i32(tmp, cpu_R[RRI8_S],
2386 1 << (((RRI8_R & 1) << 4) | RRI8_T));
2387 gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
2388 tcg_temp_free(tmp);
2389 }
2390 break;
2391
2392 }
2393 }
2394 break;
2395
2396 #define gen_narrow_load_store(type) do { \
2397 TCGv_i32 addr = tcg_temp_new_i32(); \
2398 gen_window_check2(dc, RRRN_S, RRRN_T); \
2399 tcg_gen_addi_i32(addr, cpu_R[RRRN_S], RRRN_R << 2); \
2400 gen_load_store_alignment(dc, 2, addr, false); \
2401 tcg_gen_qemu_##type(cpu_R[RRRN_T], addr, dc->cring); \
2402 tcg_temp_free(addr); \
2403 } while (0)
2404
2405 case 8: /*L32I.Nn*/
2406 gen_narrow_load_store(ld32u);
2407 break;
2408
2409 case 9: /*S32I.Nn*/
2410 gen_narrow_load_store(st32);
2411 break;
2412 #undef gen_narrow_load_store
2413
2414 case 10: /*ADD.Nn*/
2415 gen_window_check3(dc, RRRN_R, RRRN_S, RRRN_T);
2416 tcg_gen_add_i32(cpu_R[RRRN_R], cpu_R[RRRN_S], cpu_R[RRRN_T]);
2417 break;
2418
2419 case 11: /*ADDI.Nn*/
2420 gen_window_check2(dc, RRRN_R, RRRN_S);
2421 tcg_gen_addi_i32(cpu_R[RRRN_R], cpu_R[RRRN_S], RRRN_T ? RRRN_T : -1);
2422 break;
2423
2424 case 12: /*ST2n*/
2425 gen_window_check1(dc, RRRN_S);
2426 if (RRRN_T < 8) { /*MOVI.Nn*/
2427 tcg_gen_movi_i32(cpu_R[RRRN_S],
2428 RRRN_R | (RRRN_T << 4) |
2429 ((RRRN_T & 6) == 6 ? 0xffffff80 : 0));
2430 } else { /*BEQZ.Nn*/ /*BNEZ.Nn*/
2431 TCGCond eq_ne = (RRRN_T & 4) ? TCG_COND_NE : TCG_COND_EQ;
2432
2433 gen_brcondi(dc, eq_ne, cpu_R[RRRN_S], 0,
2434 4 + (RRRN_R | ((RRRN_T & 3) << 4)));
2435 }
2436 break;
2437
2438 case 13: /*ST3n*/
2439 switch (RRRN_R) {
2440 case 0: /*MOV.Nn*/
2441 gen_window_check2(dc, RRRN_S, RRRN_T);
2442 tcg_gen_mov_i32(cpu_R[RRRN_T], cpu_R[RRRN_S]);
2443 break;
2444
2445 case 15: /*S3*/
2446 switch (RRRN_T) {
2447 case 0: /*RET.Nn*/
2448 gen_jump(dc, cpu_R[0]);
2449 break;
2450
2451 case 1: /*RETW.Nn*/
2452 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
2453 {
2454 TCGv_i32 tmp = tcg_const_i32(dc->pc);
2455 gen_advance_ccount(dc);
2456 gen_helper_retw(tmp, cpu_env, tmp);
2457 gen_jump(dc, tmp);
2458 tcg_temp_free(tmp);
2459 }
2460 break;
2461
2462 case 2: /*BREAK.Nn*/
2463 HAS_OPTION(XTENSA_OPTION_DEBUG);
2464 if (dc->debug) {
2465 gen_debug_exception(dc, DEBUGCAUSE_BN);
2466 }
2467 break;
2468
2469 case 3: /*NOP.Nn*/
2470 break;
2471
2472 case 6: /*ILL.Nn*/
2473 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
2474 break;
2475
2476 default: /*reserved*/
2477 RESERVED();
2478 break;
2479 }
2480 break;
2481
2482 default: /*reserved*/
2483 RESERVED();
2484 break;
2485 }
2486 break;
2487
2488 default: /*reserved*/
2489 RESERVED();
2490 break;
2491 }
2492
2493 gen_check_loop_end(dc, 0);
2494 dc->pc = dc->next_pc;
2495
2496 return;
2497
2498 invalid_opcode:
2499 qemu_log("INVALID(pc = %08x)\n", dc->pc);
2500 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
2501 #undef HAS_OPTION
2502 }
2503
2504 static void check_breakpoint(CPUXtensaState *env, DisasContext *dc)
2505 {
2506 CPUBreakpoint *bp;
2507
2508 if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
2509 QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
2510 if (bp->pc == dc->pc) {
2511 tcg_gen_movi_i32(cpu_pc, dc->pc);
2512 gen_exception(dc, EXCP_DEBUG);
2513 dc->is_jmp = DISAS_UPDATE;
2514 }
2515 }
2516 }
2517 }
2518
2519 static void gen_ibreak_check(CPUXtensaState *env, DisasContext *dc)
2520 {
2521 unsigned i;
2522
2523 for (i = 0; i < dc->config->nibreak; ++i) {
2524 if ((env->sregs[IBREAKENABLE] & (1 << i)) &&
2525 env->sregs[IBREAKA + i] == dc->pc) {
2526 gen_debug_exception(dc, DEBUGCAUSE_IB);
2527 break;
2528 }
2529 }
2530 }
2531
2532 static void gen_intermediate_code_internal(
2533 CPUXtensaState *env, TranslationBlock *tb, int search_pc)
2534 {
2535 DisasContext dc;
2536 int insn_count = 0;
2537 int j, lj = -1;
2538 uint16_t *gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
2539 int max_insns = tb->cflags & CF_COUNT_MASK;
2540 uint32_t pc_start = tb->pc;
2541 uint32_t next_page_start =
2542 (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
2543
2544 if (max_insns == 0) {
2545 max_insns = CF_COUNT_MASK;
2546 }
2547
2548 dc.config = env->config;
2549 dc.singlestep_enabled = env->singlestep_enabled;
2550 dc.tb = tb;
2551 dc.pc = pc_start;
2552 dc.ring = tb->flags & XTENSA_TBFLAG_RING_MASK;
2553 dc.cring = (tb->flags & XTENSA_TBFLAG_EXCM) ? 0 : dc.ring;
2554 dc.lbeg = env->sregs[LBEG];
2555 dc.lend = env->sregs[LEND];
2556 dc.is_jmp = DISAS_NEXT;
2557 dc.ccount_delta = 0;
2558 dc.debug = tb->flags & XTENSA_TBFLAG_DEBUG;
2559 dc.icount = tb->flags & XTENSA_TBFLAG_ICOUNT;
2560
2561 init_litbase(&dc);
2562 init_sar_tracker(&dc);
2563 reset_used_window(&dc);
2564 if (dc.icount) {
2565 dc.next_icount = tcg_temp_local_new_i32();
2566 }
2567
2568 gen_icount_start();
2569
2570 if (env->singlestep_enabled && env->exception_taken) {
2571 env->exception_taken = 0;
2572 tcg_gen_movi_i32(cpu_pc, dc.pc);
2573 gen_exception(&dc, EXCP_DEBUG);
2574 }
2575
2576 do {
2577 check_breakpoint(env, &dc);
2578
2579 if (search_pc) {
2580 j = gen_opc_ptr - gen_opc_buf;
2581 if (lj < j) {
2582 lj++;
2583 while (lj < j) {
2584 gen_opc_instr_start[lj++] = 0;
2585 }
2586 }
2587 gen_opc_pc[lj] = dc.pc;
2588 gen_opc_instr_start[lj] = 1;
2589 gen_opc_icount[lj] = insn_count;
2590 }
2591
2592 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) {
2593 tcg_gen_debug_insn_start(dc.pc);
2594 }
2595
2596 ++dc.ccount_delta;
2597
2598 if (insn_count + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
2599 gen_io_start();
2600 }
2601
2602 if (dc.icount) {
2603 int label = gen_new_label();
2604
2605 tcg_gen_addi_i32(dc.next_icount, cpu_SR[ICOUNT], 1);
2606 tcg_gen_brcondi_i32(TCG_COND_NE, dc.next_icount, 0, label);
2607 tcg_gen_mov_i32(dc.next_icount, cpu_SR[ICOUNT]);
2608 if (dc.debug) {
2609 gen_debug_exception(&dc, DEBUGCAUSE_IC);
2610 }
2611 gen_set_label(label);
2612 }
2613
2614 if (dc.debug) {
2615 gen_ibreak_check(env, &dc);
2616 }
2617
2618 disas_xtensa_insn(&dc);
2619 ++insn_count;
2620 if (dc.icount) {
2621 tcg_gen_mov_i32(cpu_SR[ICOUNT], dc.next_icount);
2622 }
2623 if (env->singlestep_enabled) {
2624 tcg_gen_movi_i32(cpu_pc, dc.pc);
2625 gen_exception(&dc, EXCP_DEBUG);
2626 break;
2627 }
2628 } while (dc.is_jmp == DISAS_NEXT &&
2629 insn_count < max_insns &&
2630 dc.pc < next_page_start &&
2631 gen_opc_ptr < gen_opc_end);
2632
2633 reset_litbase(&dc);
2634 reset_sar_tracker(&dc);
2635 if (dc.icount) {
2636 tcg_temp_free(dc.next_icount);
2637 }
2638
2639 if (tb->cflags & CF_LAST_IO) {
2640 gen_io_end();
2641 }
2642
2643 if (dc.is_jmp == DISAS_NEXT) {
2644 gen_jumpi(&dc, dc.pc, 0);
2645 }
2646 gen_icount_end(tb, insn_count);
2647 *gen_opc_ptr = INDEX_op_end;
2648
2649 if (!search_pc) {
2650 tb->size = dc.pc - pc_start;
2651 tb->icount = insn_count;
2652 }
2653 }
2654
2655 void gen_intermediate_code(CPUXtensaState *env, TranslationBlock *tb)
2656 {
2657 gen_intermediate_code_internal(env, tb, 0);
2658 }
2659
2660 void gen_intermediate_code_pc(CPUXtensaState *env, TranslationBlock *tb)
2661 {
2662 gen_intermediate_code_internal(env, tb, 1);
2663 }
2664
2665 void cpu_dump_state(CPUXtensaState *env, FILE *f, fprintf_function cpu_fprintf,
2666 int flags)
2667 {
2668 int i, j;
2669
2670 cpu_fprintf(f, "PC=%08x\n\n", env->pc);
2671
2672 for (i = j = 0; i < 256; ++i) {
2673 if (sregnames[i]) {
2674 cpu_fprintf(f, "%s=%08x%c", sregnames[i], env->sregs[i],
2675 (j++ % 4) == 3 ? '\n' : ' ');
2676 }
2677 }
2678
2679 cpu_fprintf(f, (j % 4) == 0 ? "\n" : "\n\n");
2680
2681 for (i = j = 0; i < 256; ++i) {
2682 if (uregnames[i]) {
2683 cpu_fprintf(f, "%s=%08x%c", uregnames[i], env->uregs[i],
2684 (j++ % 4) == 3 ? '\n' : ' ');
2685 }
2686 }
2687
2688 cpu_fprintf(f, (j % 4) == 0 ? "\n" : "\n\n");
2689
2690 for (i = 0; i < 16; ++i) {
2691 cpu_fprintf(f, "A%02d=%08x%c", i, env->regs[i],
2692 (i % 4) == 3 ? '\n' : ' ');
2693 }
2694
2695 cpu_fprintf(f, "\n");
2696
2697 for (i = 0; i < env->config->nareg; ++i) {
2698 cpu_fprintf(f, "AR%02d=%08x%c", i, env->phys_regs[i],
2699 (i % 4) == 3 ? '\n' : ' ');
2700 }
2701 }
2702
2703 void restore_state_to_opc(CPUXtensaState *env, TranslationBlock *tb, int pc_pos)
2704 {
2705 env->pc = gen_opc_pc[pc_pos];
2706 }
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