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Merge remote-tracking branch 'quintela/tags/migration/20170504' into staging
[qemu/kevin.git] / target / xtensa / translate.c
blob263002486c5d9aabc4d9626f00e43dddb15b0107
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 "qemu/osdep.h"
32
33 #include "cpu.h"
34 #include "exec/exec-all.h"
35 #include "disas/disas.h"
36 #include "tcg-op.h"
37 #include "qemu/log.h"
38 #include "sysemu/sysemu.h"
39 #include "exec/cpu_ldst.h"
40 #include "exec/semihost.h"
41
42 #include "exec/helper-proto.h"
43 #include "exec/helper-gen.h"
44
45 #include "trace-tcg.h"
46 #include "exec/log.h"
47
48
49 typedef struct DisasContext {
50 const XtensaConfig *config;
51 TranslationBlock *tb;
52 uint32_t pc;
53 uint32_t next_pc;
54 int cring;
55 int ring;
56 uint32_t lbeg;
57 uint32_t lend;
58 TCGv_i32 litbase;
59 int is_jmp;
60 int singlestep_enabled;
61
62 bool sar_5bit;
63 bool sar_m32_5bit;
64 bool sar_m32_allocated;
65 TCGv_i32 sar_m32;
66
67 unsigned window;
68
69 bool debug;
70 bool icount;
71 TCGv_i32 next_icount;
72
73 unsigned cpenable;
74 } DisasContext;
75
76 static TCGv_env cpu_env;
77 static TCGv_i32 cpu_pc;
78 static TCGv_i32 cpu_R[16];
79 static TCGv_i32 cpu_FR[16];
80 static TCGv_i32 cpu_SR[256];
81 static TCGv_i32 cpu_UR[256];
82
83 #include "exec/gen-icount.h"
84
85 typedef struct XtensaReg {
86 const char *name;
87 uint64_t opt_bits;
88 enum {
89 SR_R = 1,
90 SR_W = 2,
91 SR_X = 4,
92 SR_RW = 3,
93 SR_RWX = 7,
94 } access;
95 } XtensaReg;
96
97 #define XTENSA_REG_ACCESS(regname, opt, acc) { \
98 .name = (regname), \
99 .opt_bits = XTENSA_OPTION_BIT(opt), \
100 .access = (acc), \
101 }
102
103 #define XTENSA_REG(regname, opt) XTENSA_REG_ACCESS(regname, opt, SR_RWX)
104
105 #define XTENSA_REG_BITS_ACCESS(regname, opt, acc) { \
106 .name = (regname), \
107 .opt_bits = (opt), \
108 .access = (acc), \
109 }
110
111 #define XTENSA_REG_BITS(regname, opt) \
112 XTENSA_REG_BITS_ACCESS(regname, opt, SR_RWX)
113
114 static const XtensaReg sregnames[256] = {
115 [LBEG] = XTENSA_REG("LBEG", XTENSA_OPTION_LOOP),
116 [LEND] = XTENSA_REG("LEND", XTENSA_OPTION_LOOP),
117 [LCOUNT] = XTENSA_REG("LCOUNT", XTENSA_OPTION_LOOP),
118 [SAR] = XTENSA_REG_BITS("SAR", XTENSA_OPTION_ALL),
119 [BR] = XTENSA_REG("BR", XTENSA_OPTION_BOOLEAN),
120 [LITBASE] = XTENSA_REG("LITBASE", XTENSA_OPTION_EXTENDED_L32R),
121 [SCOMPARE1] = XTENSA_REG("SCOMPARE1", XTENSA_OPTION_CONDITIONAL_STORE),
122 [ACCLO] = XTENSA_REG("ACCLO", XTENSA_OPTION_MAC16),
123 [ACCHI] = XTENSA_REG("ACCHI", XTENSA_OPTION_MAC16),
124 [MR] = XTENSA_REG("MR0", XTENSA_OPTION_MAC16),
125 [MR + 1] = XTENSA_REG("MR1", XTENSA_OPTION_MAC16),
126 [MR + 2] = XTENSA_REG("MR2", XTENSA_OPTION_MAC16),
127 [MR + 3] = XTENSA_REG("MR3", XTENSA_OPTION_MAC16),
128 [WINDOW_BASE] = XTENSA_REG("WINDOW_BASE", XTENSA_OPTION_WINDOWED_REGISTER),
129 [WINDOW_START] = XTENSA_REG("WINDOW_START",
130 XTENSA_OPTION_WINDOWED_REGISTER),
131 [PTEVADDR] = XTENSA_REG("PTEVADDR", XTENSA_OPTION_MMU),
132 [RASID] = XTENSA_REG("RASID", XTENSA_OPTION_MMU),
133 [ITLBCFG] = XTENSA_REG("ITLBCFG", XTENSA_OPTION_MMU),
134 [DTLBCFG] = XTENSA_REG("DTLBCFG", XTENSA_OPTION_MMU),
135 [IBREAKENABLE] = XTENSA_REG("IBREAKENABLE", XTENSA_OPTION_DEBUG),
136 [MEMCTL] = XTENSA_REG_BITS("MEMCTL", XTENSA_OPTION_ALL),
137 [CACHEATTR] = XTENSA_REG("CACHEATTR", XTENSA_OPTION_CACHEATTR),
138 [ATOMCTL] = XTENSA_REG("ATOMCTL", XTENSA_OPTION_ATOMCTL),
139 [IBREAKA] = XTENSA_REG("IBREAKA0", XTENSA_OPTION_DEBUG),
140 [IBREAKA + 1] = XTENSA_REG("IBREAKA1", XTENSA_OPTION_DEBUG),
141 [DBREAKA] = XTENSA_REG("DBREAKA0", XTENSA_OPTION_DEBUG),
142 [DBREAKA + 1] = XTENSA_REG("DBREAKA1", XTENSA_OPTION_DEBUG),
143 [DBREAKC] = XTENSA_REG("DBREAKC0", XTENSA_OPTION_DEBUG),
144 [DBREAKC + 1] = XTENSA_REG("DBREAKC1", XTENSA_OPTION_DEBUG),
145 [CONFIGID0] = XTENSA_REG_BITS_ACCESS("CONFIGID0", XTENSA_OPTION_ALL, SR_R),
146 [EPC1] = XTENSA_REG("EPC1", XTENSA_OPTION_EXCEPTION),
147 [EPC1 + 1] = XTENSA_REG("EPC2", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
148 [EPC1 + 2] = XTENSA_REG("EPC3", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
149 [EPC1 + 3] = XTENSA_REG("EPC4", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
150 [EPC1 + 4] = XTENSA_REG("EPC5", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
151 [EPC1 + 5] = XTENSA_REG("EPC6", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
152 [EPC1 + 6] = XTENSA_REG("EPC7", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
153 [DEPC] = XTENSA_REG("DEPC", XTENSA_OPTION_EXCEPTION),
154 [EPS2] = XTENSA_REG("EPS2", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
155 [EPS2 + 1] = XTENSA_REG("EPS3", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
156 [EPS2 + 2] = XTENSA_REG("EPS4", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
157 [EPS2 + 3] = XTENSA_REG("EPS5", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
158 [EPS2 + 4] = XTENSA_REG("EPS6", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
159 [EPS2 + 5] = XTENSA_REG("EPS7", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
160 [CONFIGID1] = XTENSA_REG_BITS_ACCESS("CONFIGID1", XTENSA_OPTION_ALL, SR_R),
161 [EXCSAVE1] = XTENSA_REG("EXCSAVE1", XTENSA_OPTION_EXCEPTION),
162 [EXCSAVE1 + 1] = XTENSA_REG("EXCSAVE2",
163 XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
164 [EXCSAVE1 + 2] = XTENSA_REG("EXCSAVE3",
165 XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
166 [EXCSAVE1 + 3] = XTENSA_REG("EXCSAVE4",
167 XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
168 [EXCSAVE1 + 4] = XTENSA_REG("EXCSAVE5",
169 XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
170 [EXCSAVE1 + 5] = XTENSA_REG("EXCSAVE6",
171 XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
172 [EXCSAVE1 + 6] = XTENSA_REG("EXCSAVE7",
173 XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
174 [CPENABLE] = XTENSA_REG("CPENABLE", XTENSA_OPTION_COPROCESSOR),
175 [INTSET] = XTENSA_REG_ACCESS("INTSET", XTENSA_OPTION_INTERRUPT, SR_RW),
176 [INTCLEAR] = XTENSA_REG_ACCESS("INTCLEAR", XTENSA_OPTION_INTERRUPT, SR_W),
177 [INTENABLE] = XTENSA_REG("INTENABLE", XTENSA_OPTION_INTERRUPT),
178 [PS] = XTENSA_REG_BITS("PS", XTENSA_OPTION_ALL),
179 [VECBASE] = XTENSA_REG("VECBASE", XTENSA_OPTION_RELOCATABLE_VECTOR),
180 [EXCCAUSE] = XTENSA_REG("EXCCAUSE", XTENSA_OPTION_EXCEPTION),
181 [DEBUGCAUSE] = XTENSA_REG_ACCESS("DEBUGCAUSE", XTENSA_OPTION_DEBUG, SR_R),
182 [CCOUNT] = XTENSA_REG("CCOUNT", XTENSA_OPTION_TIMER_INTERRUPT),
183 [PRID] = XTENSA_REG_ACCESS("PRID", XTENSA_OPTION_PROCESSOR_ID, SR_R),
184 [ICOUNT] = XTENSA_REG("ICOUNT", XTENSA_OPTION_DEBUG),
185 [ICOUNTLEVEL] = XTENSA_REG("ICOUNTLEVEL", XTENSA_OPTION_DEBUG),
186 [EXCVADDR] = XTENSA_REG("EXCVADDR", XTENSA_OPTION_EXCEPTION),
187 [CCOMPARE] = XTENSA_REG("CCOMPARE0", XTENSA_OPTION_TIMER_INTERRUPT),
188 [CCOMPARE + 1] = XTENSA_REG("CCOMPARE1",
189 XTENSA_OPTION_TIMER_INTERRUPT),
190 [CCOMPARE + 2] = XTENSA_REG("CCOMPARE2",
191 XTENSA_OPTION_TIMER_INTERRUPT),
192 [MISC] = XTENSA_REG("MISC0", XTENSA_OPTION_MISC_SR),
193 [MISC + 1] = XTENSA_REG("MISC1", XTENSA_OPTION_MISC_SR),
194 [MISC + 2] = XTENSA_REG("MISC2", XTENSA_OPTION_MISC_SR),
195 [MISC + 3] = XTENSA_REG("MISC3", XTENSA_OPTION_MISC_SR),
196 };
197
198 static const XtensaReg uregnames[256] = {
199 [THREADPTR] = XTENSA_REG("THREADPTR", XTENSA_OPTION_THREAD_POINTER),
200 [FCR] = XTENSA_REG("FCR", XTENSA_OPTION_FP_COPROCESSOR),
201 [FSR] = XTENSA_REG("FSR", XTENSA_OPTION_FP_COPROCESSOR),
202 };
203
204 void xtensa_translate_init(void)
205 {
206 static const char * const regnames[] = {
207 "ar0", "ar1", "ar2", "ar3",
208 "ar4", "ar5", "ar6", "ar7",
209 "ar8", "ar9", "ar10", "ar11",
210 "ar12", "ar13", "ar14", "ar15",
211 };
212 static const char * const fregnames[] = {
213 "f0", "f1", "f2", "f3",
214 "f4", "f5", "f6", "f7",
215 "f8", "f9", "f10", "f11",
216 "f12", "f13", "f14", "f15",
217 };
218 int i;
219
220 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
221 tcg_ctx.tcg_env = cpu_env;
222 cpu_pc = tcg_global_mem_new_i32(cpu_env,
223 offsetof(CPUXtensaState, pc), "pc");
224
225 for (i = 0; i < 16; i++) {
226 cpu_R[i] = tcg_global_mem_new_i32(cpu_env,
227 offsetof(CPUXtensaState, regs[i]),
228 regnames[i]);
229 }
230
231 for (i = 0; i < 16; i++) {
232 cpu_FR[i] = tcg_global_mem_new_i32(cpu_env,
233 offsetof(CPUXtensaState, fregs[i].f32[FP_F32_LOW]),
234 fregnames[i]);
235 }
236
237 for (i = 0; i < 256; ++i) {
238 if (sregnames[i].name) {
239 cpu_SR[i] = tcg_global_mem_new_i32(cpu_env,
240 offsetof(CPUXtensaState, sregs[i]),
241 sregnames[i].name);
242 }
243 }
244
245 for (i = 0; i < 256; ++i) {
246 if (uregnames[i].name) {
247 cpu_UR[i] = tcg_global_mem_new_i32(cpu_env,
248 offsetof(CPUXtensaState, uregs[i]),
249 uregnames[i].name);
250 }
251 }
252 }
253
254 static inline bool option_bits_enabled(DisasContext *dc, uint64_t opt)
255 {
256 return xtensa_option_bits_enabled(dc->config, opt);
257 }
258
259 static inline bool option_enabled(DisasContext *dc, int opt)
260 {
261 return xtensa_option_enabled(dc->config, opt);
262 }
263
264 static void init_litbase(DisasContext *dc)
265 {
266 if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
267 dc->litbase = tcg_temp_local_new_i32();
268 tcg_gen_andi_i32(dc->litbase, cpu_SR[LITBASE], 0xfffff000);
269 }
270 }
271
272 static void reset_litbase(DisasContext *dc)
273 {
274 if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
275 tcg_temp_free(dc->litbase);
276 }
277 }
278
279 static void init_sar_tracker(DisasContext *dc)
280 {
281 dc->sar_5bit = false;
282 dc->sar_m32_5bit = false;
283 dc->sar_m32_allocated = false;
284 }
285
286 static void reset_sar_tracker(DisasContext *dc)
287 {
288 if (dc->sar_m32_allocated) {
289 tcg_temp_free(dc->sar_m32);
290 }
291 }
292
293 static void gen_right_shift_sar(DisasContext *dc, TCGv_i32 sa)
294 {
295 tcg_gen_andi_i32(cpu_SR[SAR], sa, 0x1f);
296 if (dc->sar_m32_5bit) {
297 tcg_gen_discard_i32(dc->sar_m32);
298 }
299 dc->sar_5bit = true;
300 dc->sar_m32_5bit = false;
301 }
302
303 static void gen_left_shift_sar(DisasContext *dc, TCGv_i32 sa)
304 {
305 TCGv_i32 tmp = tcg_const_i32(32);
306 if (!dc->sar_m32_allocated) {
307 dc->sar_m32 = tcg_temp_local_new_i32();
308 dc->sar_m32_allocated = true;
309 }
310 tcg_gen_andi_i32(dc->sar_m32, sa, 0x1f);
311 tcg_gen_sub_i32(cpu_SR[SAR], tmp, dc->sar_m32);
312 dc->sar_5bit = false;
313 dc->sar_m32_5bit = true;
314 tcg_temp_free(tmp);
315 }
316
317 static void gen_exception(DisasContext *dc, int excp)
318 {
319 TCGv_i32 tmp = tcg_const_i32(excp);
320 gen_helper_exception(cpu_env, tmp);
321 tcg_temp_free(tmp);
322 }
323
324 static void gen_exception_cause(DisasContext *dc, uint32_t cause)
325 {
326 TCGv_i32 tpc = tcg_const_i32(dc->pc);
327 TCGv_i32 tcause = tcg_const_i32(cause);
328 gen_helper_exception_cause(cpu_env, tpc, tcause);
329 tcg_temp_free(tpc);
330 tcg_temp_free(tcause);
331 if (cause == ILLEGAL_INSTRUCTION_CAUSE ||
332 cause == SYSCALL_CAUSE) {
333 dc->is_jmp = DISAS_UPDATE;
334 }
335 }
336
337 static void gen_exception_cause_vaddr(DisasContext *dc, uint32_t cause,
338 TCGv_i32 vaddr)
339 {
340 TCGv_i32 tpc = tcg_const_i32(dc->pc);
341 TCGv_i32 tcause = tcg_const_i32(cause);
342 gen_helper_exception_cause_vaddr(cpu_env, tpc, tcause, vaddr);
343 tcg_temp_free(tpc);
344 tcg_temp_free(tcause);
345 }
346
347 static void gen_debug_exception(DisasContext *dc, uint32_t cause)
348 {
349 TCGv_i32 tpc = tcg_const_i32(dc->pc);
350 TCGv_i32 tcause = tcg_const_i32(cause);
351 gen_helper_debug_exception(cpu_env, tpc, tcause);
352 tcg_temp_free(tpc);
353 tcg_temp_free(tcause);
354 if (cause & (DEBUGCAUSE_IB | DEBUGCAUSE_BI | DEBUGCAUSE_BN)) {
355 dc->is_jmp = DISAS_UPDATE;
356 }
357 }
358
359 static bool gen_check_privilege(DisasContext *dc)
360 {
361 if (dc->cring) {
362 gen_exception_cause(dc, PRIVILEGED_CAUSE);
363 dc->is_jmp = DISAS_UPDATE;
364 return false;
365 }
366 return true;
367 }
368
369 static bool gen_check_cpenable(DisasContext *dc, unsigned cp)
370 {
371 if (option_enabled(dc, XTENSA_OPTION_COPROCESSOR) &&
372 !(dc->cpenable & (1 << cp))) {
373 gen_exception_cause(dc, COPROCESSOR0_DISABLED + cp);
374 dc->is_jmp = DISAS_UPDATE;
375 return false;
376 }
377 return true;
378 }
379
380 static void gen_jump_slot(DisasContext *dc, TCGv dest, int slot)
381 {
382 tcg_gen_mov_i32(cpu_pc, dest);
383 if (dc->icount) {
384 tcg_gen_mov_i32(cpu_SR[ICOUNT], dc->next_icount);
385 }
386 if (dc->singlestep_enabled) {
387 gen_exception(dc, EXCP_DEBUG);
388 } else {
389 if (slot >= 0) {
390 tcg_gen_goto_tb(slot);
391 tcg_gen_exit_tb((uintptr_t)dc->tb + slot);
392 } else {
393 tcg_gen_exit_tb(0);
394 }
395 }
396 dc->is_jmp = DISAS_UPDATE;
397 }
398
399 static void gen_jump(DisasContext *dc, TCGv dest)
400 {
401 gen_jump_slot(dc, dest, -1);
402 }
403
404 static void gen_jumpi(DisasContext *dc, uint32_t dest, int slot)
405 {
406 TCGv_i32 tmp = tcg_const_i32(dest);
407 #ifndef CONFIG_USER_ONLY
408 if (((dc->tb->pc ^ dest) & TARGET_PAGE_MASK) != 0) {
409 slot = -1;
410 }
411 #endif
412 gen_jump_slot(dc, tmp, slot);
413 tcg_temp_free(tmp);
414 }
415
416 static void gen_callw_slot(DisasContext *dc, int callinc, TCGv_i32 dest,
417 int slot)
418 {
419 TCGv_i32 tcallinc = tcg_const_i32(callinc);
420
421 tcg_gen_deposit_i32(cpu_SR[PS], cpu_SR[PS],
422 tcallinc, PS_CALLINC_SHIFT, PS_CALLINC_LEN);
423 tcg_temp_free(tcallinc);
424 tcg_gen_movi_i32(cpu_R[callinc << 2],
425 (callinc << 30) | (dc->next_pc & 0x3fffffff));
426 gen_jump_slot(dc, dest, slot);
427 }
428
429 static void gen_callw(DisasContext *dc, int callinc, TCGv_i32 dest)
430 {
431 gen_callw_slot(dc, callinc, dest, -1);
432 }
433
434 static void gen_callwi(DisasContext *dc, int callinc, uint32_t dest, int slot)
435 {
436 TCGv_i32 tmp = tcg_const_i32(dest);
437 #ifndef CONFIG_USER_ONLY
438 if (((dc->tb->pc ^ dest) & TARGET_PAGE_MASK) != 0) {
439 slot = -1;
440 }
441 #endif
442 gen_callw_slot(dc, callinc, tmp, slot);
443 tcg_temp_free(tmp);
444 }
445
446 static bool gen_check_loop_end(DisasContext *dc, int slot)
447 {
448 if (option_enabled(dc, XTENSA_OPTION_LOOP) &&
449 !(dc->tb->flags & XTENSA_TBFLAG_EXCM) &&
450 dc->next_pc == dc->lend) {
451 TCGLabel *label = gen_new_label();
452
453 tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_SR[LCOUNT], 0, label);
454 tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_SR[LCOUNT], 1);
455 gen_jumpi(dc, dc->lbeg, slot);
456 gen_set_label(label);
457 gen_jumpi(dc, dc->next_pc, -1);
458 return true;
459 }
460 return false;
461 }
462
463 static void gen_jumpi_check_loop_end(DisasContext *dc, int slot)
464 {
465 if (!gen_check_loop_end(dc, slot)) {
466 gen_jumpi(dc, dc->next_pc, slot);
467 }
468 }
469
470 static void gen_brcond(DisasContext *dc, TCGCond cond,
471 TCGv_i32 t0, TCGv_i32 t1, uint32_t offset)
472 {
473 TCGLabel *label = gen_new_label();
474
475 tcg_gen_brcond_i32(cond, t0, t1, label);
476 gen_jumpi_check_loop_end(dc, 0);
477 gen_set_label(label);
478 gen_jumpi(dc, dc->pc + offset, 1);
479 }
480
481 static void gen_brcondi(DisasContext *dc, TCGCond cond,
482 TCGv_i32 t0, uint32_t t1, uint32_t offset)
483 {
484 TCGv_i32 tmp = tcg_const_i32(t1);
485 gen_brcond(dc, cond, t0, tmp, offset);
486 tcg_temp_free(tmp);
487 }
488
489 static bool gen_check_sr(DisasContext *dc, uint32_t sr, unsigned access)
490 {
491 if (!xtensa_option_bits_enabled(dc->config, sregnames[sr].opt_bits)) {
492 if (sregnames[sr].name) {
493 qemu_log_mask(LOG_GUEST_ERROR, "SR %s is not configured\n", sregnames[sr].name);
494 } else {
495 qemu_log_mask(LOG_UNIMP, "SR %d is not implemented\n", sr);
496 }
497 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
498 return false;
499 } else if (!(sregnames[sr].access & access)) {
500 static const char * const access_text[] = {
501 [SR_R] = "rsr",
502 [SR_W] = "wsr",
503 [SR_X] = "xsr",
504 };
505 assert(access < ARRAY_SIZE(access_text) && access_text[access]);
506 qemu_log_mask(LOG_GUEST_ERROR, "SR %s is not available for %s\n", sregnames[sr].name,
507 access_text[access]);
508 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
509 return false;
510 }
511 return true;
512 }
513
514 static bool gen_rsr_ccount(DisasContext *dc, TCGv_i32 d, uint32_t sr)
515 {
516 if (dc->tb->cflags & CF_USE_ICOUNT) {
517 gen_io_start();
518 }
519 gen_helper_update_ccount(cpu_env);
520 tcg_gen_mov_i32(d, cpu_SR[sr]);
521 if (dc->tb->cflags & CF_USE_ICOUNT) {
522 gen_io_end();
523 return true;
524 }
525 return false;
526 }
527
528 static bool gen_rsr_ptevaddr(DisasContext *dc, TCGv_i32 d, uint32_t sr)
529 {
530 tcg_gen_shri_i32(d, cpu_SR[EXCVADDR], 10);
531 tcg_gen_or_i32(d, d, cpu_SR[sr]);
532 tcg_gen_andi_i32(d, d, 0xfffffffc);
533 return false;
534 }
535
536 static bool gen_rsr(DisasContext *dc, TCGv_i32 d, uint32_t sr)
537 {
538 static bool (* const rsr_handler[256])(DisasContext *dc,
539 TCGv_i32 d, uint32_t sr) = {
540 [CCOUNT] = gen_rsr_ccount,
541 [INTSET] = gen_rsr_ccount,
542 [PTEVADDR] = gen_rsr_ptevaddr,
543 };
544
545 if (rsr_handler[sr]) {
546 return rsr_handler[sr](dc, d, sr);
547 } else {
548 tcg_gen_mov_i32(d, cpu_SR[sr]);
549 return false;
550 }
551 }
552
553 static bool gen_wsr_lbeg(DisasContext *dc, uint32_t sr, TCGv_i32 s)
554 {
555 gen_helper_wsr_lbeg(cpu_env, s);
556 gen_jumpi_check_loop_end(dc, 0);
557 return false;
558 }
559
560 static bool gen_wsr_lend(DisasContext *dc, uint32_t sr, TCGv_i32 s)
561 {
562 gen_helper_wsr_lend(cpu_env, s);
563 gen_jumpi_check_loop_end(dc, 0);
564 return false;
565 }
566
567 static bool gen_wsr_sar(DisasContext *dc, uint32_t sr, TCGv_i32 s)
568 {
569 tcg_gen_andi_i32(cpu_SR[sr], s, 0x3f);
570 if (dc->sar_m32_5bit) {
571 tcg_gen_discard_i32(dc->sar_m32);
572 }
573 dc->sar_5bit = false;
574 dc->sar_m32_5bit = false;
575 return false;
576 }
577
578 static bool gen_wsr_br(DisasContext *dc, uint32_t sr, TCGv_i32 s)
579 {
580 tcg_gen_andi_i32(cpu_SR[sr], s, 0xffff);
581 return false;
582 }
583
584 static bool gen_wsr_litbase(DisasContext *dc, uint32_t sr, TCGv_i32 s)
585 {
586 tcg_gen_andi_i32(cpu_SR[sr], s, 0xfffff001);
587 /* This can change tb->flags, so exit tb */
588 gen_jumpi_check_loop_end(dc, -1);
589 return true;
590 }
591
592 static bool gen_wsr_acchi(DisasContext *dc, uint32_t sr, TCGv_i32 s)
593 {
594 tcg_gen_ext8s_i32(cpu_SR[sr], s);
595 return false;
596 }
597
598 static bool gen_wsr_windowbase(DisasContext *dc, uint32_t sr, TCGv_i32 v)
599 {
600 gen_helper_wsr_windowbase(cpu_env, v);
601 /* This can change tb->flags, so exit tb */
602 gen_jumpi_check_loop_end(dc, -1);
603 return true;
604 }
605
606 static bool gen_wsr_windowstart(DisasContext *dc, uint32_t sr, TCGv_i32 v)
607 {
608 tcg_gen_andi_i32(cpu_SR[sr], v, (1 << dc->config->nareg / 4) - 1);
609 /* This can change tb->flags, so exit tb */
610 gen_jumpi_check_loop_end(dc, -1);
611 return true;
612 }
613
614 static bool gen_wsr_ptevaddr(DisasContext *dc, uint32_t sr, TCGv_i32 v)
615 {
616 tcg_gen_andi_i32(cpu_SR[sr], v, 0xffc00000);
617 return false;
618 }
619
620 static bool gen_wsr_rasid(DisasContext *dc, uint32_t sr, TCGv_i32 v)
621 {
622 gen_helper_wsr_rasid(cpu_env, v);
623 /* This can change tb->flags, so exit tb */
624 gen_jumpi_check_loop_end(dc, -1);
625 return true;
626 }
627
628 static bool gen_wsr_tlbcfg(DisasContext *dc, uint32_t sr, TCGv_i32 v)
629 {
630 tcg_gen_andi_i32(cpu_SR[sr], v, 0x01130000);
631 return false;
632 }
633
634 static bool gen_wsr_ibreakenable(DisasContext *dc, uint32_t sr, TCGv_i32 v)
635 {
636 gen_helper_wsr_ibreakenable(cpu_env, v);
637 gen_jumpi_check_loop_end(dc, 0);
638 return true;
639 }
640
641 static bool gen_wsr_memctl(DisasContext *dc, uint32_t sr, TCGv_i32 v)
642 {
643 gen_helper_wsr_memctl(cpu_env, v);
644 return false;
645 }
646
647 static bool gen_wsr_atomctl(DisasContext *dc, uint32_t sr, TCGv_i32 v)
648 {
649 tcg_gen_andi_i32(cpu_SR[sr], v, 0x3f);
650 return false;
651 }
652
653 static bool gen_wsr_ibreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v)
654 {
655 unsigned id = sr - IBREAKA;
656
657 if (id < dc->config->nibreak) {
658 TCGv_i32 tmp = tcg_const_i32(id);
659 gen_helper_wsr_ibreaka(cpu_env, tmp, v);
660 tcg_temp_free(tmp);
661 gen_jumpi_check_loop_end(dc, 0);
662 return true;
663 }
664 return false;
665 }
666
667 static bool gen_wsr_dbreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v)
668 {
669 unsigned id = sr - DBREAKA;
670
671 if (id < dc->config->ndbreak) {
672 TCGv_i32 tmp = tcg_const_i32(id);
673 gen_helper_wsr_dbreaka(cpu_env, tmp, v);
674 tcg_temp_free(tmp);
675 }
676 return false;
677 }
678
679 static bool gen_wsr_dbreakc(DisasContext *dc, uint32_t sr, TCGv_i32 v)
680 {
681 unsigned id = sr - DBREAKC;
682
683 if (id < dc->config->ndbreak) {
684 TCGv_i32 tmp = tcg_const_i32(id);
685 gen_helper_wsr_dbreakc(cpu_env, tmp, v);
686 tcg_temp_free(tmp);
687 }
688 return false;
689 }
690
691 static bool gen_wsr_cpenable(DisasContext *dc, uint32_t sr, TCGv_i32 v)
692 {
693 tcg_gen_andi_i32(cpu_SR[sr], v, 0xff);
694 /* This can change tb->flags, so exit tb */
695 gen_jumpi_check_loop_end(dc, -1);
696 return true;
697 }
698
699 static void gen_check_interrupts(DisasContext *dc)
700 {
701 if (dc->tb->cflags & CF_USE_ICOUNT) {
702 gen_io_start();
703 }
704 gen_helper_check_interrupts(cpu_env);
705 if (dc->tb->cflags & CF_USE_ICOUNT) {
706 gen_io_end();
707 }
708 }
709
710 static bool gen_wsr_intset(DisasContext *dc, uint32_t sr, TCGv_i32 v)
711 {
712 tcg_gen_andi_i32(cpu_SR[sr], v,
713 dc->config->inttype_mask[INTTYPE_SOFTWARE]);
714 gen_check_interrupts(dc);
715 gen_jumpi_check_loop_end(dc, 0);
716 return true;
717 }
718
719 static bool gen_wsr_intclear(DisasContext *dc, uint32_t sr, TCGv_i32 v)
720 {
721 TCGv_i32 tmp = tcg_temp_new_i32();
722
723 tcg_gen_andi_i32(tmp, v,
724 dc->config->inttype_mask[INTTYPE_EDGE] |
725 dc->config->inttype_mask[INTTYPE_NMI] |
726 dc->config->inttype_mask[INTTYPE_SOFTWARE]);
727 tcg_gen_andc_i32(cpu_SR[INTSET], cpu_SR[INTSET], tmp);
728 tcg_temp_free(tmp);
729 gen_check_interrupts(dc);
730 gen_jumpi_check_loop_end(dc, 0);
731 return true;
732 }
733
734 static bool gen_wsr_intenable(DisasContext *dc, uint32_t sr, TCGv_i32 v)
735 {
736 tcg_gen_mov_i32(cpu_SR[sr], v);
737 gen_check_interrupts(dc);
738 gen_jumpi_check_loop_end(dc, 0);
739 return true;
740 }
741
742 static bool gen_wsr_ps(DisasContext *dc, uint32_t sr, TCGv_i32 v)
743 {
744 uint32_t mask = PS_WOE | PS_CALLINC | PS_OWB |
745 PS_UM | PS_EXCM | PS_INTLEVEL;
746
747 if (option_enabled(dc, XTENSA_OPTION_MMU)) {
748 mask |= PS_RING;
749 }
750 tcg_gen_andi_i32(cpu_SR[sr], v, mask);
751 gen_check_interrupts(dc);
752 /* This can change mmu index and tb->flags, so exit tb */
753 gen_jumpi_check_loop_end(dc, -1);
754 return true;
755 }
756
757 static bool gen_wsr_ccount(DisasContext *dc, uint32_t sr, TCGv_i32 v)
758 {
759 if (dc->tb->cflags & CF_USE_ICOUNT) {
760 gen_io_start();
761 }
762 gen_helper_wsr_ccount(cpu_env, v);
763 if (dc->tb->cflags & CF_USE_ICOUNT) {
764 gen_io_end();
765 gen_jumpi_check_loop_end(dc, 0);
766 return true;
767 }
768 return false;
769 }
770
771 static bool gen_wsr_icount(DisasContext *dc, uint32_t sr, TCGv_i32 v)
772 {
773 if (dc->icount) {
774 tcg_gen_mov_i32(dc->next_icount, v);
775 } else {
776 tcg_gen_mov_i32(cpu_SR[sr], v);
777 }
778 return false;
779 }
780
781 static bool gen_wsr_icountlevel(DisasContext *dc, uint32_t sr, TCGv_i32 v)
782 {
783 tcg_gen_andi_i32(cpu_SR[sr], v, 0xf);
784 /* This can change tb->flags, so exit tb */
785 gen_jumpi_check_loop_end(dc, -1);
786 return true;
787 }
788
789 static bool gen_wsr_ccompare(DisasContext *dc, uint32_t sr, TCGv_i32 v)
790 {
791 uint32_t id = sr - CCOMPARE;
792 bool ret = false;
793
794 if (id < dc->config->nccompare) {
795 uint32_t int_bit = 1 << dc->config->timerint[id];
796 TCGv_i32 tmp = tcg_const_i32(id);
797
798 tcg_gen_mov_i32(cpu_SR[sr], v);
799 tcg_gen_andi_i32(cpu_SR[INTSET], cpu_SR[INTSET], ~int_bit);
800 if (dc->tb->cflags & CF_USE_ICOUNT) {
801 gen_io_start();
802 }
803 gen_helper_update_ccompare(cpu_env, tmp);
804 if (dc->tb->cflags & CF_USE_ICOUNT) {
805 gen_io_end();
806 gen_jumpi_check_loop_end(dc, 0);
807 ret = true;
808 }
809 tcg_temp_free(tmp);
810 }
811 return ret;
812 }
813
814 static bool gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 s)
815 {
816 static bool (* const wsr_handler[256])(DisasContext *dc,
817 uint32_t sr, TCGv_i32 v) = {
818 [LBEG] = gen_wsr_lbeg,
819 [LEND] = gen_wsr_lend,
820 [SAR] = gen_wsr_sar,
821 [BR] = gen_wsr_br,
822 [LITBASE] = gen_wsr_litbase,
823 [ACCHI] = gen_wsr_acchi,
824 [WINDOW_BASE] = gen_wsr_windowbase,
825 [WINDOW_START] = gen_wsr_windowstart,
826 [PTEVADDR] = gen_wsr_ptevaddr,
827 [RASID] = gen_wsr_rasid,
828 [ITLBCFG] = gen_wsr_tlbcfg,
829 [DTLBCFG] = gen_wsr_tlbcfg,
830 [IBREAKENABLE] = gen_wsr_ibreakenable,
831 [MEMCTL] = gen_wsr_memctl,
832 [ATOMCTL] = gen_wsr_atomctl,
833 [IBREAKA] = gen_wsr_ibreaka,
834 [IBREAKA + 1] = gen_wsr_ibreaka,
835 [DBREAKA] = gen_wsr_dbreaka,
836 [DBREAKA + 1] = gen_wsr_dbreaka,
837 [DBREAKC] = gen_wsr_dbreakc,
838 [DBREAKC + 1] = gen_wsr_dbreakc,
839 [CPENABLE] = gen_wsr_cpenable,
840 [INTSET] = gen_wsr_intset,
841 [INTCLEAR] = gen_wsr_intclear,
842 [INTENABLE] = gen_wsr_intenable,
843 [PS] = gen_wsr_ps,
844 [CCOUNT] = gen_wsr_ccount,
845 [ICOUNT] = gen_wsr_icount,
846 [ICOUNTLEVEL] = gen_wsr_icountlevel,
847 [CCOMPARE] = gen_wsr_ccompare,
848 [CCOMPARE + 1] = gen_wsr_ccompare,
849 [CCOMPARE + 2] = gen_wsr_ccompare,
850 };
851
852 if (wsr_handler[sr]) {
853 return wsr_handler[sr](dc, sr, s);
854 } else {
855 tcg_gen_mov_i32(cpu_SR[sr], s);
856 return false;
857 }
858 }
859
860 static void gen_wur(uint32_t ur, TCGv_i32 s)
861 {
862 switch (ur) {
863 case FCR:
864 gen_helper_wur_fcr(cpu_env, s);
865 break;
866
867 case FSR:
868 tcg_gen_andi_i32(cpu_UR[ur], s, 0xffffff80);
869 break;
870
871 default:
872 tcg_gen_mov_i32(cpu_UR[ur], s);
873 break;
874 }
875 }
876
877 static void gen_load_store_alignment(DisasContext *dc, int shift,
878 TCGv_i32 addr, bool no_hw_alignment)
879 {
880 if (!option_enabled(dc, XTENSA_OPTION_UNALIGNED_EXCEPTION)) {
881 tcg_gen_andi_i32(addr, addr, ~0 << shift);
882 } else if (option_enabled(dc, XTENSA_OPTION_HW_ALIGNMENT) &&
883 no_hw_alignment) {
884 TCGLabel *label = gen_new_label();
885 TCGv_i32 tmp = tcg_temp_new_i32();
886 tcg_gen_andi_i32(tmp, addr, ~(~0 << shift));
887 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
888 gen_exception_cause_vaddr(dc, LOAD_STORE_ALIGNMENT_CAUSE, addr);
889 gen_set_label(label);
890 tcg_temp_free(tmp);
891 }
892 }
893
894 static void gen_waiti(DisasContext *dc, uint32_t imm4)
895 {
896 TCGv_i32 pc = tcg_const_i32(dc->next_pc);
897 TCGv_i32 intlevel = tcg_const_i32(imm4);
898
899 if (dc->tb->cflags & CF_USE_ICOUNT) {
900 gen_io_start();
901 }
902 gen_helper_waiti(cpu_env, pc, intlevel);
903 if (dc->tb->cflags & CF_USE_ICOUNT) {
904 gen_io_end();
905 }
906 tcg_temp_free(pc);
907 tcg_temp_free(intlevel);
908 gen_jumpi_check_loop_end(dc, 0);
909 }
910
911 static bool gen_window_check1(DisasContext *dc, unsigned r1)
912 {
913 if (r1 / 4 > dc->window) {
914 TCGv_i32 pc = tcg_const_i32(dc->pc);
915 TCGv_i32 w = tcg_const_i32(r1 / 4);
916
917 gen_helper_window_check(cpu_env, pc, w);
918 dc->is_jmp = DISAS_UPDATE;
919 return false;
920 }
921 return true;
922 }
923
924 static bool gen_window_check2(DisasContext *dc, unsigned r1, unsigned r2)
925 {
926 return gen_window_check1(dc, r1 > r2 ? r1 : r2);
927 }
928
929 static bool gen_window_check3(DisasContext *dc, unsigned r1, unsigned r2,
930 unsigned r3)
931 {
932 return gen_window_check2(dc, r1, r2 > r3 ? r2 : r3);
933 }
934
935 static TCGv_i32 gen_mac16_m(TCGv_i32 v, bool hi, bool is_unsigned)
936 {
937 TCGv_i32 m = tcg_temp_new_i32();
938
939 if (hi) {
940 (is_unsigned ? tcg_gen_shri_i32 : tcg_gen_sari_i32)(m, v, 16);
941 } else {
942 (is_unsigned ? tcg_gen_ext16u_i32 : tcg_gen_ext16s_i32)(m, v);
943 }
944 return m;
945 }
946
947 static inline unsigned xtensa_op0_insn_len(unsigned op0)
948 {
949 return op0 >= 8 ? 2 : 3;
950 }
951
952 static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc)
953 {
954 #define HAS_OPTION_BITS(opt) do { \
955 if (!option_bits_enabled(dc, opt)) { \
956 qemu_log_mask(LOG_GUEST_ERROR, "Option is not enabled %s:%d\n", \
957 __FILE__, __LINE__); \
958 goto invalid_opcode; \
959 } \
960 } while (0)
961
962 #define HAS_OPTION(opt) HAS_OPTION_BITS(XTENSA_OPTION_BIT(opt))
963
964 #define TBD() qemu_log_mask(LOG_UNIMP, "TBD(pc = %08x): %s:%d\n", dc->pc, __FILE__, __LINE__)
965 #define RESERVED() do { \
966 qemu_log_mask(LOG_GUEST_ERROR, "RESERVED(pc = %08x, %02x%02x%02x): %s:%d\n", \
967 dc->pc, b0, b1, b2, __FILE__, __LINE__); \
968 goto invalid_opcode; \
969 } while (0)
970
971
972 #ifdef TARGET_WORDS_BIGENDIAN
973 #define OP0 (((b0) & 0xf0) >> 4)
974 #define OP1 (((b2) & 0xf0) >> 4)
975 #define OP2 ((b2) & 0xf)
976 #define RRR_R ((b1) & 0xf)
977 #define RRR_S (((b1) & 0xf0) >> 4)
978 #define RRR_T ((b0) & 0xf)
979 #else
980 #define OP0 (((b0) & 0xf))
981 #define OP1 (((b2) & 0xf))
982 #define OP2 (((b2) & 0xf0) >> 4)
983 #define RRR_R (((b1) & 0xf0) >> 4)
984 #define RRR_S (((b1) & 0xf))
985 #define RRR_T (((b0) & 0xf0) >> 4)
986 #endif
987 #define RRR_X ((RRR_R & 0x4) >> 2)
988 #define RRR_Y ((RRR_T & 0x4) >> 2)
989 #define RRR_W (RRR_R & 0x3)
990
991 #define RRRN_R RRR_R
992 #define RRRN_S RRR_S
993 #define RRRN_T RRR_T
994
995 #define RRI4_R RRR_R
996 #define RRI4_S RRR_S
997 #define RRI4_T RRR_T
998 #ifdef TARGET_WORDS_BIGENDIAN
999 #define RRI4_IMM4 ((b2) & 0xf)
1000 #else
1001 #define RRI4_IMM4 (((b2) & 0xf0) >> 4)
1002 #endif
1003
1004 #define RRI8_R RRR_R
1005 #define RRI8_S RRR_S
1006 #define RRI8_T RRR_T
1007 #define RRI8_IMM8 (b2)
1008 #define RRI8_IMM8_SE ((((b2) & 0x80) ? 0xffffff00 : 0) | RRI8_IMM8)
1009
1010 #ifdef TARGET_WORDS_BIGENDIAN
1011 #define RI16_IMM16 (((b1) << 8) | (b2))
1012 #else
1013 #define RI16_IMM16 (((b2) << 8) | (b1))
1014 #endif
1015
1016 #ifdef TARGET_WORDS_BIGENDIAN
1017 #define CALL_N (((b0) & 0xc) >> 2)
1018 #define CALL_OFFSET ((((b0) & 0x3) << 16) | ((b1) << 8) | (b2))
1019 #else
1020 #define CALL_N (((b0) & 0x30) >> 4)
1021 #define CALL_OFFSET ((((b0) & 0xc0) >> 6) | ((b1) << 2) | ((b2) << 10))
1022 #endif
1023 #define CALL_OFFSET_SE \
1024 (((CALL_OFFSET & 0x20000) ? 0xfffc0000 : 0) | CALL_OFFSET)
1025
1026 #define CALLX_N CALL_N
1027 #ifdef TARGET_WORDS_BIGENDIAN
1028 #define CALLX_M ((b0) & 0x3)
1029 #else
1030 #define CALLX_M (((b0) & 0xc0) >> 6)
1031 #endif
1032 #define CALLX_S RRR_S
1033
1034 #define BRI12_M CALLX_M
1035 #define BRI12_S RRR_S
1036 #ifdef TARGET_WORDS_BIGENDIAN
1037 #define BRI12_IMM12 ((((b1) & 0xf) << 8) | (b2))
1038 #else
1039 #define BRI12_IMM12 ((((b1) & 0xf0) >> 4) | ((b2) << 4))
1040 #endif
1041 #define BRI12_IMM12_SE (((BRI12_IMM12 & 0x800) ? 0xfffff000 : 0) | BRI12_IMM12)
1042
1043 #define BRI8_M BRI12_M
1044 #define BRI8_R RRI8_R
1045 #define BRI8_S RRI8_S
1046 #define BRI8_IMM8 RRI8_IMM8
1047 #define BRI8_IMM8_SE RRI8_IMM8_SE
1048
1049 #define RSR_SR (b1)
1050
1051 uint8_t b0 = cpu_ldub_code(env, dc->pc);
1052 uint8_t b1 = cpu_ldub_code(env, dc->pc + 1);
1053 uint8_t b2 = 0;
1054 unsigned len = xtensa_op0_insn_len(OP0);
1055
1056 static const uint32_t B4CONST[] = {
1057 0xffffffff, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256
1058 };
1059
1060 static const uint32_t B4CONSTU[] = {
1061 32768, 65536, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256
1062 };
1063
1064 switch (len) {
1065 case 2:
1066 HAS_OPTION(XTENSA_OPTION_CODE_DENSITY);
1067 break;
1068
1069 case 3:
1070 b2 = cpu_ldub_code(env, dc->pc + 2);
1071 break;
1072
1073 default:
1074 RESERVED();
1075 }
1076 dc->next_pc = dc->pc + len;
1077
1078 switch (OP0) {
1079 case 0: /*QRST*/
1080 switch (OP1) {
1081 case 0: /*RST0*/
1082 switch (OP2) {
1083 case 0: /*ST0*/
1084 if ((RRR_R & 0xc) == 0x8) {
1085 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
1086 }
1087
1088 switch (RRR_R) {
1089 case 0: /*SNM0*/
1090 switch (CALLX_M) {
1091 case 0: /*ILL*/
1092 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
1093 break;
1094
1095 case 1: /*reserved*/
1096 RESERVED();
1097 break;
1098
1099 case 2: /*JR*/
1100 switch (CALLX_N) {
1101 case 0: /*RET*/
1102 case 2: /*JX*/
1103 if (gen_window_check1(dc, CALLX_S)) {
1104 gen_jump(dc, cpu_R[CALLX_S]);
1105 }
1106 break;
1107
1108 case 1: /*RETWw*/
1109 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1110 {
1111 TCGv_i32 tmp = tcg_const_i32(dc->pc);
1112 gen_helper_retw(tmp, cpu_env, tmp);
1113 gen_jump(dc, tmp);
1114 tcg_temp_free(tmp);
1115 }
1116 break;
1117
1118 case 3: /*reserved*/
1119 RESERVED();
1120 break;
1121 }
1122 break;
1123
1124 case 3: /*CALLX*/
1125 if (!gen_window_check2(dc, CALLX_S, CALLX_N << 2)) {
1126 break;
1127 }
1128 switch (CALLX_N) {
1129 case 0: /*CALLX0*/
1130 {
1131 TCGv_i32 tmp = tcg_temp_new_i32();
1132 tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
1133 tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
1134 gen_jump(dc, tmp);
1135 tcg_temp_free(tmp);
1136 }
1137 break;
1138
1139 case 1: /*CALLX4w*/
1140 case 2: /*CALLX8w*/
1141 case 3: /*CALLX12w*/
1142 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1143 {
1144 TCGv_i32 tmp = tcg_temp_new_i32();
1145
1146 tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
1147 gen_callw(dc, CALLX_N, tmp);
1148 tcg_temp_free(tmp);
1149 }
1150 break;
1151 }
1152 break;
1153 }
1154 break;
1155
1156 case 1: /*MOVSPw*/
1157 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1158 if (gen_window_check2(dc, RRR_T, RRR_S)) {
1159 TCGv_i32 pc = tcg_const_i32(dc->pc);
1160 gen_helper_movsp(cpu_env, pc);
1161 tcg_gen_mov_i32(cpu_R[RRR_T], cpu_R[RRR_S]);
1162 tcg_temp_free(pc);
1163 }
1164 break;
1165
1166 case 2: /*SYNC*/
1167 switch (RRR_T) {
1168 case 0: /*ISYNC*/
1169 break;
1170
1171 case 1: /*RSYNC*/
1172 break;
1173
1174 case 2: /*ESYNC*/
1175 break;
1176
1177 case 3: /*DSYNC*/
1178 break;
1179
1180 case 8: /*EXCW*/
1181 HAS_OPTION(XTENSA_OPTION_EXCEPTION);
1182 break;
1183
1184 case 12: /*MEMW*/
1185 break;
1186
1187 case 13: /*EXTW*/
1188 break;
1189
1190 case 15: /*NOP*/
1191 break;
1192
1193 default: /*reserved*/
1194 RESERVED();
1195 break;
1196 }
1197 break;
1198
1199 case 3: /*RFEIx*/
1200 switch (RRR_T) {
1201 case 0: /*RFETx*/
1202 HAS_OPTION(XTENSA_OPTION_EXCEPTION);
1203 switch (RRR_S) {
1204 case 0: /*RFEx*/
1205 if (gen_check_privilege(dc)) {
1206 tcg_gen_andi_i32(cpu_SR[PS], cpu_SR[PS], ~PS_EXCM);
1207 gen_check_interrupts(dc);
1208 gen_jump(dc, cpu_SR[EPC1]);
1209 }
1210 break;
1211
1212 case 1: /*RFUEx*/
1213 RESERVED();
1214 break;
1215
1216 case 2: /*RFDEx*/
1217 if (gen_check_privilege(dc)) {
1218 gen_jump(dc, cpu_SR[
1219 dc->config->ndepc ? DEPC : EPC1]);
1220 }
1221 break;
1222
1223 case 4: /*RFWOw*/
1224 case 5: /*RFWUw*/
1225 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1226 if (gen_check_privilege(dc)) {
1227 TCGv_i32 tmp = tcg_const_i32(1);
1228
1229 tcg_gen_andi_i32(
1230 cpu_SR[PS], cpu_SR[PS], ~PS_EXCM);
1231 tcg_gen_shl_i32(tmp, tmp, cpu_SR[WINDOW_BASE]);
1232
1233 if (RRR_S == 4) {
1234 tcg_gen_andc_i32(cpu_SR[WINDOW_START],
1235 cpu_SR[WINDOW_START], tmp);
1236 } else {
1237 tcg_gen_or_i32(cpu_SR[WINDOW_START],
1238 cpu_SR[WINDOW_START], tmp);
1239 }
1240
1241 gen_helper_restore_owb(cpu_env);
1242 gen_check_interrupts(dc);
1243 gen_jump(dc, cpu_SR[EPC1]);
1244
1245 tcg_temp_free(tmp);
1246 }
1247 break;
1248
1249 default: /*reserved*/
1250 RESERVED();
1251 break;
1252 }
1253 break;
1254
1255 case 1: /*RFIx*/
1256 HAS_OPTION(XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT);
1257 if (RRR_S >= 2 && RRR_S <= dc->config->nlevel) {
1258 if (gen_check_privilege(dc)) {
1259 tcg_gen_mov_i32(cpu_SR[PS],
1260 cpu_SR[EPS2 + RRR_S - 2]);
1261 gen_check_interrupts(dc);
1262 gen_jump(dc, cpu_SR[EPC1 + RRR_S - 1]);
1263 }
1264 } else {
1265 qemu_log_mask(LOG_GUEST_ERROR, "RFI %d is illegal\n", RRR_S);
1266 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
1267 }
1268 break;
1269
1270 case 2: /*RFME*/
1271 TBD();
1272 break;
1273
1274 default: /*reserved*/
1275 RESERVED();
1276 break;
1277
1278 }
1279 break;
1280
1281 case 4: /*BREAKx*/
1282 HAS_OPTION(XTENSA_OPTION_DEBUG);
1283 if (dc->debug) {
1284 gen_debug_exception(dc, DEBUGCAUSE_BI);
1285 }
1286 break;
1287
1288 case 5: /*SYSCALLx*/
1289 HAS_OPTION(XTENSA_OPTION_EXCEPTION);
1290 switch (RRR_S) {
1291 case 0: /*SYSCALLx*/
1292 gen_exception_cause(dc, SYSCALL_CAUSE);
1293 break;
1294
1295 case 1: /*SIMCALL*/
1296 if (semihosting_enabled()) {
1297 if (gen_check_privilege(dc)) {
1298 gen_helper_simcall(cpu_env);
1299 }
1300 } else {
1301 qemu_log_mask(LOG_GUEST_ERROR, "SIMCALL but semihosting is disabled\n");
1302 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
1303 }
1304 break;
1305
1306 default:
1307 RESERVED();
1308 break;
1309 }
1310 break;
1311
1312 case 6: /*RSILx*/
1313 HAS_OPTION(XTENSA_OPTION_INTERRUPT);
1314 if (gen_check_privilege(dc) &&
1315 gen_window_check1(dc, RRR_T)) {
1316 tcg_gen_mov_i32(cpu_R[RRR_T], cpu_SR[PS]);
1317 tcg_gen_andi_i32(cpu_SR[PS], cpu_SR[PS], ~PS_INTLEVEL);
1318 tcg_gen_ori_i32(cpu_SR[PS], cpu_SR[PS], RRR_S);
1319 gen_check_interrupts(dc);
1320 gen_jumpi_check_loop_end(dc, 0);
1321 }
1322 break;
1323
1324 case 7: /*WAITIx*/
1325 HAS_OPTION(XTENSA_OPTION_INTERRUPT);
1326 if (gen_check_privilege(dc)) {
1327 gen_waiti(dc, RRR_S);
1328 }
1329 break;
1330
1331 case 8: /*ANY4p*/
1332 case 9: /*ALL4p*/
1333 case 10: /*ANY8p*/
1334 case 11: /*ALL8p*/
1335 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
1336 {
1337 const unsigned shift = (RRR_R & 2) ? 8 : 4;
1338 TCGv_i32 mask = tcg_const_i32(
1339 ((1 << shift) - 1) << RRR_S);
1340 TCGv_i32 tmp = tcg_temp_new_i32();
1341
1342 tcg_gen_and_i32(tmp, cpu_SR[BR], mask);
1343 if (RRR_R & 1) { /*ALL*/
1344 tcg_gen_addi_i32(tmp, tmp, 1 << RRR_S);
1345 } else { /*ANY*/
1346 tcg_gen_add_i32(tmp, tmp, mask);
1347 }
1348 tcg_gen_shri_i32(tmp, tmp, RRR_S + shift);
1349 tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR],
1350 tmp, RRR_T, 1);
1351 tcg_temp_free(mask);
1352 tcg_temp_free(tmp);
1353 }
1354 break;
1355
1356 default: /*reserved*/
1357 RESERVED();
1358 break;
1359
1360 }
1361 break;
1362
1363 case 1: /*AND*/
1364 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1365 tcg_gen_and_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1366 }
1367 break;
1368
1369 case 2: /*OR*/
1370 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1371 tcg_gen_or_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1372 }
1373 break;
1374
1375 case 3: /*XOR*/
1376 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1377 tcg_gen_xor_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1378 }
1379 break;
1380
1381 case 4: /*ST1*/
1382 switch (RRR_R) {
1383 case 0: /*SSR*/
1384 if (gen_window_check1(dc, RRR_S)) {
1385 gen_right_shift_sar(dc, cpu_R[RRR_S]);
1386 }
1387 break;
1388
1389 case 1: /*SSL*/
1390 if (gen_window_check1(dc, RRR_S)) {
1391 gen_left_shift_sar(dc, cpu_R[RRR_S]);
1392 }
1393 break;
1394
1395 case 2: /*SSA8L*/
1396 if (gen_window_check1(dc, RRR_S)) {
1397 TCGv_i32 tmp = tcg_temp_new_i32();
1398 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], 3);
1399 gen_right_shift_sar(dc, tmp);
1400 tcg_temp_free(tmp);
1401 }
1402 break;
1403
1404 case 3: /*SSA8B*/
1405 if (gen_window_check1(dc, RRR_S)) {
1406 TCGv_i32 tmp = tcg_temp_new_i32();
1407 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], 3);
1408 gen_left_shift_sar(dc, tmp);
1409 tcg_temp_free(tmp);
1410 }
1411 break;
1412
1413 case 4: /*SSAI*/
1414 {
1415 TCGv_i32 tmp = tcg_const_i32(
1416 RRR_S | ((RRR_T & 1) << 4));
1417 gen_right_shift_sar(dc, tmp);
1418 tcg_temp_free(tmp);
1419 }
1420 break;
1421
1422 case 6: /*RER*/
1423 HAS_OPTION(XTENSA_OPTION_EXTERN_REGS);
1424 if (gen_check_privilege(dc) &&
1425 gen_window_check2(dc, RRR_S, RRR_T)) {
1426 gen_helper_rer(cpu_R[RRR_T], cpu_env, cpu_R[RRR_S]);
1427 }
1428 break;
1429
1430 case 7: /*WER*/
1431 HAS_OPTION(XTENSA_OPTION_EXTERN_REGS);
1432 if (gen_check_privilege(dc) &&
1433 gen_window_check2(dc, RRR_S, RRR_T)) {
1434 gen_helper_wer(cpu_env, cpu_R[RRR_T], cpu_R[RRR_S]);
1435 }
1436 break;
1437
1438 case 8: /*ROTWw*/
1439 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
1440 if (gen_check_privilege(dc)) {
1441 TCGv_i32 tmp = tcg_const_i32(
1442 RRR_T | ((RRR_T & 8) ? 0xfffffff0 : 0));
1443 gen_helper_rotw(cpu_env, tmp);
1444 tcg_temp_free(tmp);
1445 /* This can change tb->flags, so exit tb */
1446 gen_jumpi_check_loop_end(dc, -1);
1447 }
1448 break;
1449
1450 case 14: /*NSAu*/
1451 HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA);
1452 if (gen_window_check2(dc, RRR_S, RRR_T)) {
1453 tcg_gen_clrsb_i32(cpu_R[RRR_T], cpu_R[RRR_S]);
1454 }
1455 break;
1456
1457 case 15: /*NSAUu*/
1458 HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA);
1459 if (gen_window_check2(dc, RRR_S, RRR_T)) {
1460 tcg_gen_clzi_i32(cpu_R[RRR_T], cpu_R[RRR_S], 32);
1461 }
1462 break;
1463
1464 default: /*reserved*/
1465 RESERVED();
1466 break;
1467 }
1468 break;
1469
1470 case 5: /*TLB*/
1471 HAS_OPTION_BITS(
1472 XTENSA_OPTION_BIT(XTENSA_OPTION_MMU) |
1473 XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_PROTECTION) |
1474 XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_TRANSLATION));
1475 if (gen_check_privilege(dc) &&
1476 gen_window_check2(dc, RRR_S, RRR_T)) {
1477 TCGv_i32 dtlb = tcg_const_i32((RRR_R & 8) != 0);
1478
1479 switch (RRR_R & 7) {
1480 case 3: /*RITLB0*/ /*RDTLB0*/
1481 gen_helper_rtlb0(cpu_R[RRR_T],
1482 cpu_env, cpu_R[RRR_S], dtlb);
1483 break;
1484
1485 case 4: /*IITLB*/ /*IDTLB*/
1486 gen_helper_itlb(cpu_env, cpu_R[RRR_S], dtlb);
1487 /* This could change memory mapping, so exit tb */
1488 gen_jumpi_check_loop_end(dc, -1);
1489 break;
1490
1491 case 5: /*PITLB*/ /*PDTLB*/
1492 tcg_gen_movi_i32(cpu_pc, dc->pc);
1493 gen_helper_ptlb(cpu_R[RRR_T],
1494 cpu_env, cpu_R[RRR_S], dtlb);
1495 break;
1496
1497 case 6: /*WITLB*/ /*WDTLB*/
1498 gen_helper_wtlb(
1499 cpu_env, cpu_R[RRR_T], cpu_R[RRR_S], dtlb);
1500 /* This could change memory mapping, so exit tb */
1501 gen_jumpi_check_loop_end(dc, -1);
1502 break;
1503
1504 case 7: /*RITLB1*/ /*RDTLB1*/
1505 gen_helper_rtlb1(cpu_R[RRR_T],
1506 cpu_env, cpu_R[RRR_S], dtlb);
1507 break;
1508
1509 default:
1510 tcg_temp_free(dtlb);
1511 RESERVED();
1512 break;
1513 }
1514 tcg_temp_free(dtlb);
1515 }
1516 break;
1517
1518 case 6: /*RT0*/
1519 if (!gen_window_check2(dc, RRR_R, RRR_T)) {
1520 break;
1521 }
1522 switch (RRR_S) {
1523 case 0: /*NEG*/
1524 tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
1525 break;
1526
1527 case 1: /*ABS*/
1528 {
1529 TCGv_i32 zero = tcg_const_i32(0);
1530 TCGv_i32 neg = tcg_temp_new_i32();
1531
1532 tcg_gen_neg_i32(neg, cpu_R[RRR_T]);
1533 tcg_gen_movcond_i32(TCG_COND_GE, cpu_R[RRR_R],
1534 cpu_R[RRR_T], zero, cpu_R[RRR_T], neg);
1535 tcg_temp_free(neg);
1536 tcg_temp_free(zero);
1537 }
1538 break;
1539
1540 default: /*reserved*/
1541 RESERVED();
1542 break;
1543 }
1544 break;
1545
1546 case 7: /*reserved*/
1547 RESERVED();
1548 break;
1549
1550 case 8: /*ADD*/
1551 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1552 tcg_gen_add_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1553 }
1554 break;
1555
1556 case 9: /*ADD**/
1557 case 10:
1558 case 11:
1559 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1560 TCGv_i32 tmp = tcg_temp_new_i32();
1561 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], OP2 - 8);
1562 tcg_gen_add_i32(cpu_R[RRR_R], tmp, cpu_R[RRR_T]);
1563 tcg_temp_free(tmp);
1564 }
1565 break;
1566
1567 case 12: /*SUB*/
1568 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1569 tcg_gen_sub_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1570 }
1571 break;
1572
1573 case 13: /*SUB**/
1574 case 14:
1575 case 15:
1576 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1577 TCGv_i32 tmp = tcg_temp_new_i32();
1578 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], OP2 - 12);
1579 tcg_gen_sub_i32(cpu_R[RRR_R], tmp, cpu_R[RRR_T]);
1580 tcg_temp_free(tmp);
1581 }
1582 break;
1583 }
1584 break;
1585
1586 case 1: /*RST1*/
1587 switch (OP2) {
1588 case 0: /*SLLI*/
1589 case 1:
1590 if (gen_window_check2(dc, RRR_R, RRR_S)) {
1591 tcg_gen_shli_i32(cpu_R[RRR_R], cpu_R[RRR_S],
1592 32 - (RRR_T | ((OP2 & 1) << 4)));
1593 }
1594 break;
1595
1596 case 2: /*SRAI*/
1597 case 3:
1598 if (gen_window_check2(dc, RRR_R, RRR_T)) {
1599 tcg_gen_sari_i32(cpu_R[RRR_R], cpu_R[RRR_T],
1600 RRR_S | ((OP2 & 1) << 4));
1601 }
1602 break;
1603
1604 case 4: /*SRLI*/
1605 if (gen_window_check2(dc, RRR_R, RRR_T)) {
1606 tcg_gen_shri_i32(cpu_R[RRR_R], cpu_R[RRR_T], RRR_S);
1607 }
1608 break;
1609
1610 case 6: /*XSR*/
1611 if (gen_check_sr(dc, RSR_SR, SR_X) &&
1612 (RSR_SR < 64 || gen_check_privilege(dc)) &&
1613 gen_window_check1(dc, RRR_T)) {
1614 TCGv_i32 tmp = tcg_temp_new_i32();
1615 bool rsr_end, wsr_end;
1616
1617 tcg_gen_mov_i32(tmp, cpu_R[RRR_T]);
1618 rsr_end = gen_rsr(dc, cpu_R[RRR_T], RSR_SR);
1619 wsr_end = gen_wsr(dc, RSR_SR, tmp);
1620 tcg_temp_free(tmp);
1621 if (rsr_end && !wsr_end) {
1622 gen_jumpi_check_loop_end(dc, 0);
1623 }
1624 }
1625 break;
1626
1627 /*
1628 * Note: 64 bit ops are used here solely because SAR values
1629 * have range 0..63
1630 */
1631 #define gen_shift_reg(cmd, reg) do { \
1632 TCGv_i64 tmp = tcg_temp_new_i64(); \
1633 tcg_gen_extu_i32_i64(tmp, reg); \
1634 tcg_gen_##cmd##_i64(v, v, tmp); \
1635 tcg_gen_extrl_i64_i32(cpu_R[RRR_R], v); \
1636 tcg_temp_free_i64(v); \
1637 tcg_temp_free_i64(tmp); \
1638 } while (0)
1639
1640 #define gen_shift(cmd) gen_shift_reg(cmd, cpu_SR[SAR])
1641
1642 case 8: /*SRC*/
1643 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1644 TCGv_i64 v = tcg_temp_new_i64();
1645 tcg_gen_concat_i32_i64(v, cpu_R[RRR_T], cpu_R[RRR_S]);
1646 gen_shift(shr);
1647 }
1648 break;
1649
1650 case 9: /*SRL*/
1651 if (!gen_window_check2(dc, RRR_R, RRR_T)) {
1652 break;
1653 }
1654 if (dc->sar_5bit) {
1655 tcg_gen_shr_i32(cpu_R[RRR_R], cpu_R[RRR_T], cpu_SR[SAR]);
1656 } else {
1657 TCGv_i64 v = tcg_temp_new_i64();
1658 tcg_gen_extu_i32_i64(v, cpu_R[RRR_T]);
1659 gen_shift(shr);
1660 }
1661 break;
1662
1663 case 10: /*SLL*/
1664 if (!gen_window_check2(dc, RRR_R, RRR_S)) {
1665 break;
1666 }
1667 if (dc->sar_m32_5bit) {
1668 tcg_gen_shl_i32(cpu_R[RRR_R], cpu_R[RRR_S], dc->sar_m32);
1669 } else {
1670 TCGv_i64 v = tcg_temp_new_i64();
1671 TCGv_i32 s = tcg_const_i32(32);
1672 tcg_gen_sub_i32(s, s, cpu_SR[SAR]);
1673 tcg_gen_andi_i32(s, s, 0x3f);
1674 tcg_gen_extu_i32_i64(v, cpu_R[RRR_S]);
1675 gen_shift_reg(shl, s);
1676 tcg_temp_free(s);
1677 }
1678 break;
1679
1680 case 11: /*SRA*/
1681 if (!gen_window_check2(dc, RRR_R, RRR_T)) {
1682 break;
1683 }
1684 if (dc->sar_5bit) {
1685 tcg_gen_sar_i32(cpu_R[RRR_R], cpu_R[RRR_T], cpu_SR[SAR]);
1686 } else {
1687 TCGv_i64 v = tcg_temp_new_i64();
1688 tcg_gen_ext_i32_i64(v, cpu_R[RRR_T]);
1689 gen_shift(sar);
1690 }
1691 break;
1692 #undef gen_shift
1693 #undef gen_shift_reg
1694
1695 case 12: /*MUL16U*/
1696 HAS_OPTION(XTENSA_OPTION_16_BIT_IMUL);
1697 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1698 TCGv_i32 v1 = tcg_temp_new_i32();
1699 TCGv_i32 v2 = tcg_temp_new_i32();
1700 tcg_gen_ext16u_i32(v1, cpu_R[RRR_S]);
1701 tcg_gen_ext16u_i32(v2, cpu_R[RRR_T]);
1702 tcg_gen_mul_i32(cpu_R[RRR_R], v1, v2);
1703 tcg_temp_free(v2);
1704 tcg_temp_free(v1);
1705 }
1706 break;
1707
1708 case 13: /*MUL16S*/
1709 HAS_OPTION(XTENSA_OPTION_16_BIT_IMUL);
1710 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1711 TCGv_i32 v1 = tcg_temp_new_i32();
1712 TCGv_i32 v2 = tcg_temp_new_i32();
1713 tcg_gen_ext16s_i32(v1, cpu_R[RRR_S]);
1714 tcg_gen_ext16s_i32(v2, cpu_R[RRR_T]);
1715 tcg_gen_mul_i32(cpu_R[RRR_R], v1, v2);
1716 tcg_temp_free(v2);
1717 tcg_temp_free(v1);
1718 }
1719 break;
1720
1721 default: /*reserved*/
1722 RESERVED();
1723 break;
1724 }
1725 break;
1726
1727 case 2: /*RST2*/
1728 if (OP2 >= 8 && !gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1729 break;
1730 }
1731
1732 if (OP2 >= 12) {
1733 HAS_OPTION(XTENSA_OPTION_32_BIT_IDIV);
1734 TCGLabel *label = gen_new_label();
1735 tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_T], 0, label);
1736 gen_exception_cause(dc, INTEGER_DIVIDE_BY_ZERO_CAUSE);
1737 gen_set_label(label);
1738 }
1739
1740 switch (OP2) {
1741 #define BOOLEAN_LOGIC(fn, r, s, t) \
1742 do { \
1743 HAS_OPTION(XTENSA_OPTION_BOOLEAN); \
1744 TCGv_i32 tmp1 = tcg_temp_new_i32(); \
1745 TCGv_i32 tmp2 = tcg_temp_new_i32(); \
1746 \
1747 tcg_gen_shri_i32(tmp1, cpu_SR[BR], s); \
1748 tcg_gen_shri_i32(tmp2, cpu_SR[BR], t); \
1749 tcg_gen_##fn##_i32(tmp1, tmp1, tmp2); \
1750 tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR], tmp1, r, 1); \
1751 tcg_temp_free(tmp1); \
1752 tcg_temp_free(tmp2); \
1753 } while (0)
1754
1755 case 0: /*ANDBp*/
1756 BOOLEAN_LOGIC(and, RRR_R, RRR_S, RRR_T);
1757 break;
1758
1759 case 1: /*ANDBCp*/
1760 BOOLEAN_LOGIC(andc, RRR_R, RRR_S, RRR_T);
1761 break;
1762
1763 case 2: /*ORBp*/
1764 BOOLEAN_LOGIC(or, RRR_R, RRR_S, RRR_T);
1765 break;
1766
1767 case 3: /*ORBCp*/
1768 BOOLEAN_LOGIC(orc, RRR_R, RRR_S, RRR_T);
1769 break;
1770
1771 case 4: /*XORBp*/
1772 BOOLEAN_LOGIC(xor, RRR_R, RRR_S, RRR_T);
1773 break;
1774
1775 #undef BOOLEAN_LOGIC
1776
1777 case 8: /*MULLi*/
1778 HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL);
1779 tcg_gen_mul_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1780 break;
1781
1782 case 10: /*MULUHi*/
1783 case 11: /*MULSHi*/
1784 HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL_HIGH);
1785 {
1786 TCGv lo = tcg_temp_new();
1787
1788 if (OP2 == 10) {
1789 tcg_gen_mulu2_i32(lo, cpu_R[RRR_R],
1790 cpu_R[RRR_S], cpu_R[RRR_T]);
1791 } else {
1792 tcg_gen_muls2_i32(lo, cpu_R[RRR_R],
1793 cpu_R[RRR_S], cpu_R[RRR_T]);
1794 }
1795 tcg_temp_free(lo);
1796 }
1797 break;
1798
1799 case 12: /*QUOUi*/
1800 tcg_gen_divu_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1801 break;
1802
1803 case 13: /*QUOSi*/
1804 case 15: /*REMSi*/
1805 {
1806 TCGLabel *label1 = gen_new_label();
1807 TCGLabel *label2 = gen_new_label();
1808
1809 tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_S], 0x80000000,
1810 label1);
1811 tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_T], 0xffffffff,
1812 label1);
1813 tcg_gen_movi_i32(cpu_R[RRR_R],
1814 OP2 == 13 ? 0x80000000 : 0);
1815 tcg_gen_br(label2);
1816 gen_set_label(label1);
1817 if (OP2 == 13) {
1818 tcg_gen_div_i32(cpu_R[RRR_R],
1819 cpu_R[RRR_S], cpu_R[RRR_T]);
1820 } else {
1821 tcg_gen_rem_i32(cpu_R[RRR_R],
1822 cpu_R[RRR_S], cpu_R[RRR_T]);
1823 }
1824 gen_set_label(label2);
1825 }
1826 break;
1827
1828 case 14: /*REMUi*/
1829 tcg_gen_remu_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
1830 break;
1831
1832 default: /*reserved*/
1833 RESERVED();
1834 break;
1835 }
1836 break;
1837
1838 case 3: /*RST3*/
1839 switch (OP2) {
1840 case 0: /*RSR*/
1841 if (gen_check_sr(dc, RSR_SR, SR_R) &&
1842 (RSR_SR < 64 || gen_check_privilege(dc)) &&
1843 gen_window_check1(dc, RRR_T)) {
1844 if (gen_rsr(dc, cpu_R[RRR_T], RSR_SR)) {
1845 gen_jumpi_check_loop_end(dc, 0);
1846 }
1847 }
1848 break;
1849
1850 case 1: /*WSR*/
1851 if (gen_check_sr(dc, RSR_SR, SR_W) &&
1852 (RSR_SR < 64 || gen_check_privilege(dc)) &&
1853 gen_window_check1(dc, RRR_T)) {
1854 gen_wsr(dc, RSR_SR, cpu_R[RRR_T]);
1855 }
1856 break;
1857
1858 case 2: /*SEXTu*/
1859 HAS_OPTION(XTENSA_OPTION_MISC_OP_SEXT);
1860 if (gen_window_check2(dc, RRR_R, RRR_S)) {
1861 int shift = 24 - RRR_T;
1862
1863 if (shift == 24) {
1864 tcg_gen_ext8s_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1865 } else if (shift == 16) {
1866 tcg_gen_ext16s_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
1867 } else {
1868 TCGv_i32 tmp = tcg_temp_new_i32();
1869 tcg_gen_shli_i32(tmp, cpu_R[RRR_S], shift);
1870 tcg_gen_sari_i32(cpu_R[RRR_R], tmp, shift);
1871 tcg_temp_free(tmp);
1872 }
1873 }
1874 break;
1875
1876 case 3: /*CLAMPSu*/
1877 HAS_OPTION(XTENSA_OPTION_MISC_OP_CLAMPS);
1878 if (gen_window_check2(dc, RRR_R, RRR_S)) {
1879 TCGv_i32 tmp1 = tcg_temp_new_i32();
1880 TCGv_i32 tmp2 = tcg_temp_new_i32();
1881 TCGv_i32 zero = tcg_const_i32(0);
1882
1883 tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 24 - RRR_T);
1884 tcg_gen_xor_i32(tmp2, tmp1, cpu_R[RRR_S]);
1885 tcg_gen_andi_i32(tmp2, tmp2, 0xffffffff << (RRR_T + 7));
1886
1887 tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 31);
1888 tcg_gen_xori_i32(tmp1, tmp1, 0xffffffff >> (25 - RRR_T));
1889
1890 tcg_gen_movcond_i32(TCG_COND_EQ, cpu_R[RRR_R], tmp2, zero,
1891 cpu_R[RRR_S], tmp1);
1892 tcg_temp_free(tmp1);
1893 tcg_temp_free(tmp2);
1894 tcg_temp_free(zero);
1895 }
1896 break;
1897
1898 case 4: /*MINu*/
1899 case 5: /*MAXu*/
1900 case 6: /*MINUu*/
1901 case 7: /*MAXUu*/
1902 HAS_OPTION(XTENSA_OPTION_MISC_OP_MINMAX);
1903 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1904 static const TCGCond cond[] = {
1905 TCG_COND_LE,
1906 TCG_COND_GE,
1907 TCG_COND_LEU,
1908 TCG_COND_GEU
1909 };
1910 tcg_gen_movcond_i32(cond[OP2 - 4], cpu_R[RRR_R],
1911 cpu_R[RRR_S], cpu_R[RRR_T],
1912 cpu_R[RRR_S], cpu_R[RRR_T]);
1913 }
1914 break;
1915
1916 case 8: /*MOVEQZ*/
1917 case 9: /*MOVNEZ*/
1918 case 10: /*MOVLTZ*/
1919 case 11: /*MOVGEZ*/
1920 if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
1921 static const TCGCond cond[] = {
1922 TCG_COND_EQ,
1923 TCG_COND_NE,
1924 TCG_COND_LT,
1925 TCG_COND_GE,
1926 };
1927 TCGv_i32 zero = tcg_const_i32(0);
1928
1929 tcg_gen_movcond_i32(cond[OP2 - 8], cpu_R[RRR_R],
1930 cpu_R[RRR_T], zero, cpu_R[RRR_S], cpu_R[RRR_R]);
1931 tcg_temp_free(zero);
1932 }
1933 break;
1934
1935 case 12: /*MOVFp*/
1936 case 13: /*MOVTp*/
1937 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
1938 if (gen_window_check2(dc, RRR_R, RRR_S)) {
1939 TCGv_i32 zero = tcg_const_i32(0);
1940 TCGv_i32 tmp = tcg_temp_new_i32();
1941
1942 tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRR_T);
1943 tcg_gen_movcond_i32(OP2 & 1 ? TCG_COND_NE : TCG_COND_EQ,
1944 cpu_R[RRR_R], tmp, zero,
1945 cpu_R[RRR_S], cpu_R[RRR_R]);
1946
1947 tcg_temp_free(tmp);
1948 tcg_temp_free(zero);
1949 }
1950 break;
1951
1952 case 14: /*RUR*/
1953 if (gen_window_check1(dc, RRR_R)) {
1954 int st = (RRR_S << 4) + RRR_T;
1955 if (uregnames[st].name) {
1956 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_UR[st]);
1957 } else {
1958 qemu_log_mask(LOG_UNIMP, "RUR %d not implemented, ", st);
1959 TBD();
1960 }
1961 }
1962 break;
1963
1964 case 15: /*WUR*/
1965 if (gen_window_check1(dc, RRR_T)) {
1966 if (uregnames[RSR_SR].name) {
1967 gen_wur(RSR_SR, cpu_R[RRR_T]);
1968 } else {
1969 qemu_log_mask(LOG_UNIMP, "WUR %d not implemented, ", RSR_SR);
1970 TBD();
1971 }
1972 }
1973 break;
1974
1975 }
1976 break;
1977
1978 case 4: /*EXTUI*/
1979 case 5:
1980 if (gen_window_check2(dc, RRR_R, RRR_T)) {
1981 int shiftimm = RRR_S | ((OP1 & 1) << 4);
1982 int maskimm = (1 << (OP2 + 1)) - 1;
1983
1984 TCGv_i32 tmp = tcg_temp_new_i32();
1985 tcg_gen_shri_i32(tmp, cpu_R[RRR_T], shiftimm);
1986 tcg_gen_andi_i32(cpu_R[RRR_R], tmp, maskimm);
1987 tcg_temp_free(tmp);
1988 }
1989 break;
1990
1991 case 6: /*CUST0*/
1992 RESERVED();
1993 break;
1994
1995 case 7: /*CUST1*/
1996 RESERVED();
1997 break;
1998
1999 case 8: /*LSCXp*/
2000 switch (OP2) {
2001 case 0: /*LSXf*/
2002 case 1: /*LSXUf*/
2003 case 4: /*SSXf*/
2004 case 5: /*SSXUf*/
2005 HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
2006 if (gen_window_check2(dc, RRR_S, RRR_T) &&
2007 gen_check_cpenable(dc, 0)) {
2008 TCGv_i32 addr = tcg_temp_new_i32();
2009 tcg_gen_add_i32(addr, cpu_R[RRR_S], cpu_R[RRR_T]);
2010 gen_load_store_alignment(dc, 2, addr, false);
2011 if (OP2 & 0x4) {
2012 tcg_gen_qemu_st32(cpu_FR[RRR_R], addr, dc->cring);
2013 } else {
2014 tcg_gen_qemu_ld32u(cpu_FR[RRR_R], addr, dc->cring);
2015 }
2016 if (OP2 & 0x1) {
2017 tcg_gen_mov_i32(cpu_R[RRR_S], addr);
2018 }
2019 tcg_temp_free(addr);
2020 }
2021 break;
2022
2023 default: /*reserved*/
2024 RESERVED();
2025 break;
2026 }
2027 break;
2028
2029 case 9: /*LSC4*/
2030 if (!gen_window_check2(dc, RRR_S, RRR_T)) {
2031 break;
2032 }
2033 switch (OP2) {
2034 case 0: /*L32E*/
2035 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
2036 if (gen_check_privilege(dc) &&
2037 gen_window_check2(dc, RRR_S, RRR_T)) {
2038 TCGv_i32 addr = tcg_temp_new_i32();
2039 tcg_gen_addi_i32(addr, cpu_R[RRR_S],
2040 (0xffffffc0 | (RRR_R << 2)));
2041 tcg_gen_qemu_ld32u(cpu_R[RRR_T], addr, dc->ring);
2042 tcg_temp_free(addr);
2043 }
2044 break;
2045
2046 case 4: /*S32E*/
2047 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
2048 if (gen_check_privilege(dc) &&
2049 gen_window_check2(dc, RRR_S, RRR_T)) {
2050 TCGv_i32 addr = tcg_temp_new_i32();
2051 tcg_gen_addi_i32(addr, cpu_R[RRR_S],
2052 (0xffffffc0 | (RRR_R << 2)));
2053 tcg_gen_qemu_st32(cpu_R[RRR_T], addr, dc->ring);
2054 tcg_temp_free(addr);
2055 }
2056 break;
2057
2058 case 5: /*S32N*/
2059 if (gen_window_check2(dc, RRI4_S, RRI4_T)) {
2060 TCGv_i32 addr = tcg_temp_new_i32();
2061
2062 tcg_gen_addi_i32(addr, cpu_R[RRI4_S], RRI4_IMM4 << 2);
2063 gen_load_store_alignment(dc, 2, addr, false);
2064 tcg_gen_qemu_st32(cpu_R[RRI4_T], addr, dc->cring);
2065 tcg_temp_free(addr);
2066 }
2067 break;
2068
2069 default:
2070 RESERVED();
2071 break;
2072 }
2073 break;
2074
2075 case 10: /*FP0*/
2076 /*DEPBITS*/
2077 if (option_enabled(dc, XTENSA_OPTION_DEPBITS)) {
2078 if (!gen_window_check2(dc, RRR_S, RRR_T)) {
2079 break;
2080 }
2081 tcg_gen_deposit_i32(cpu_R[RRR_T], cpu_R[RRR_T], cpu_R[RRR_S],
2082 OP2, RRR_R + 1);
2083 break;
2084 }
2085
2086 HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
2087 switch (OP2) {
2088 case 0: /*ADD.Sf*/
2089 if (gen_check_cpenable(dc, 0)) {
2090 gen_helper_add_s(cpu_FR[RRR_R], cpu_env,
2091 cpu_FR[RRR_S], cpu_FR[RRR_T]);
2092 }
2093 break;
2094
2095 case 1: /*SUB.Sf*/
2096 if (gen_check_cpenable(dc, 0)) {
2097 gen_helper_sub_s(cpu_FR[RRR_R], cpu_env,
2098 cpu_FR[RRR_S], cpu_FR[RRR_T]);
2099 }
2100 break;
2101
2102 case 2: /*MUL.Sf*/
2103 if (gen_check_cpenable(dc, 0)) {
2104 gen_helper_mul_s(cpu_FR[RRR_R], cpu_env,
2105 cpu_FR[RRR_S], cpu_FR[RRR_T]);
2106 }
2107 break;
2108
2109 case 4: /*MADD.Sf*/
2110 if (gen_check_cpenable(dc, 0)) {
2111 gen_helper_madd_s(cpu_FR[RRR_R], cpu_env,
2112 cpu_FR[RRR_R], cpu_FR[RRR_S],
2113 cpu_FR[RRR_T]);
2114 }
2115 break;
2116
2117 case 5: /*MSUB.Sf*/
2118 if (gen_check_cpenable(dc, 0)) {
2119 gen_helper_msub_s(cpu_FR[RRR_R], cpu_env,
2120 cpu_FR[RRR_R], cpu_FR[RRR_S],
2121 cpu_FR[RRR_T]);
2122 }
2123 break;
2124
2125 case 8: /*ROUND.Sf*/
2126 case 9: /*TRUNC.Sf*/
2127 case 10: /*FLOOR.Sf*/
2128 case 11: /*CEIL.Sf*/
2129 case 14: /*UTRUNC.Sf*/
2130 if (gen_window_check1(dc, RRR_R) &&
2131 gen_check_cpenable(dc, 0)) {
2132 static const unsigned rounding_mode_const[] = {
2133 float_round_nearest_even,
2134 float_round_to_zero,
2135 float_round_down,
2136 float_round_up,
2137 [6] = float_round_to_zero,
2138 };
2139 TCGv_i32 rounding_mode = tcg_const_i32(
2140 rounding_mode_const[OP2 & 7]);
2141 TCGv_i32 scale = tcg_const_i32(RRR_T);
2142
2143 if (OP2 == 14) {
2144 gen_helper_ftoui(cpu_R[RRR_R], cpu_FR[RRR_S],
2145 rounding_mode, scale);
2146 } else {
2147 gen_helper_ftoi(cpu_R[RRR_R], cpu_FR[RRR_S],
2148 rounding_mode, scale);
2149 }
2150
2151 tcg_temp_free(rounding_mode);
2152 tcg_temp_free(scale);
2153 }
2154 break;
2155
2156 case 12: /*FLOAT.Sf*/
2157 case 13: /*UFLOAT.Sf*/
2158 if (gen_window_check1(dc, RRR_S) &&
2159 gen_check_cpenable(dc, 0)) {
2160 TCGv_i32 scale = tcg_const_i32(-RRR_T);
2161
2162 if (OP2 == 13) {
2163 gen_helper_uitof(cpu_FR[RRR_R], cpu_env,
2164 cpu_R[RRR_S], scale);
2165 } else {
2166 gen_helper_itof(cpu_FR[RRR_R], cpu_env,
2167 cpu_R[RRR_S], scale);
2168 }
2169 tcg_temp_free(scale);
2170 }
2171 break;
2172
2173 case 15: /*FP1OP*/
2174 switch (RRR_T) {
2175 case 0: /*MOV.Sf*/
2176 if (gen_check_cpenable(dc, 0)) {
2177 tcg_gen_mov_i32(cpu_FR[RRR_R], cpu_FR[RRR_S]);
2178 }
2179 break;
2180
2181 case 1: /*ABS.Sf*/
2182 if (gen_check_cpenable(dc, 0)) {
2183 gen_helper_abs_s(cpu_FR[RRR_R], cpu_FR[RRR_S]);
2184 }
2185 break;
2186
2187 case 4: /*RFRf*/
2188 if (gen_window_check1(dc, RRR_R) &&
2189 gen_check_cpenable(dc, 0)) {
2190 tcg_gen_mov_i32(cpu_R[RRR_R], cpu_FR[RRR_S]);
2191 }
2192 break;
2193
2194 case 5: /*WFRf*/
2195 if (gen_window_check1(dc, RRR_S) &&
2196 gen_check_cpenable(dc, 0)) {
2197 tcg_gen_mov_i32(cpu_FR[RRR_R], cpu_R[RRR_S]);
2198 }
2199 break;
2200
2201 case 6: /*NEG.Sf*/
2202 if (gen_check_cpenable(dc, 0)) {
2203 gen_helper_neg_s(cpu_FR[RRR_R], cpu_FR[RRR_S]);
2204 }
2205 break;
2206
2207 default: /*reserved*/
2208 RESERVED();
2209 break;
2210 }
2211 break;
2212
2213 default: /*reserved*/
2214 RESERVED();
2215 break;
2216 }
2217 break;
2218
2219 case 11: /*FP1*/
2220 /*DEPBITS*/
2221 if (option_enabled(dc, XTENSA_OPTION_DEPBITS)) {
2222 if (!gen_window_check2(dc, RRR_S, RRR_T)) {
2223 break;
2224 }
2225 tcg_gen_deposit_i32(cpu_R[RRR_T], cpu_R[RRR_T], cpu_R[RRR_S],
2226 OP2 + 16, RRR_R + 1);
2227 break;
2228 }
2229
2230 HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
2231
2232 #define gen_compare(rel, br, a, b) \
2233 do { \
2234 if (gen_check_cpenable(dc, 0)) { \
2235 TCGv_i32 bit = tcg_const_i32(1 << br); \
2236 \
2237 gen_helper_##rel(cpu_env, bit, cpu_FR[a], cpu_FR[b]); \
2238 tcg_temp_free(bit); \
2239 } \
2240 } while (0)
2241
2242 switch (OP2) {
2243 case 1: /*UN.Sf*/
2244 gen_compare(un_s, RRR_R, RRR_S, RRR_T);
2245 break;
2246
2247 case 2: /*OEQ.Sf*/
2248 gen_compare(oeq_s, RRR_R, RRR_S, RRR_T);
2249 break;
2250
2251 case 3: /*UEQ.Sf*/
2252 gen_compare(ueq_s, RRR_R, RRR_S, RRR_T);
2253 break;
2254
2255 case 4: /*OLT.Sf*/
2256 gen_compare(olt_s, RRR_R, RRR_S, RRR_T);
2257 break;
2258
2259 case 5: /*ULT.Sf*/
2260 gen_compare(ult_s, RRR_R, RRR_S, RRR_T);
2261 break;
2262
2263 case 6: /*OLE.Sf*/
2264 gen_compare(ole_s, RRR_R, RRR_S, RRR_T);
2265 break;
2266
2267 case 7: /*ULE.Sf*/
2268 gen_compare(ule_s, RRR_R, RRR_S, RRR_T);
2269 break;
2270
2271 #undef gen_compare
2272
2273 case 8: /*MOVEQZ.Sf*/
2274 case 9: /*MOVNEZ.Sf*/
2275 case 10: /*MOVLTZ.Sf*/
2276 case 11: /*MOVGEZ.Sf*/
2277 if (gen_window_check1(dc, RRR_T) &&
2278 gen_check_cpenable(dc, 0)) {
2279 static const TCGCond cond[] = {
2280 TCG_COND_EQ,
2281 TCG_COND_NE,
2282 TCG_COND_LT,
2283 TCG_COND_GE,
2284 };
2285 TCGv_i32 zero = tcg_const_i32(0);
2286
2287 tcg_gen_movcond_i32(cond[OP2 - 8], cpu_FR[RRR_R],
2288 cpu_R[RRR_T], zero, cpu_FR[RRR_S], cpu_FR[RRR_R]);
2289 tcg_temp_free(zero);
2290 }
2291 break;
2292
2293 case 12: /*MOVF.Sf*/
2294 case 13: /*MOVT.Sf*/
2295 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
2296 if (gen_check_cpenable(dc, 0)) {
2297 TCGv_i32 zero = tcg_const_i32(0);
2298 TCGv_i32 tmp = tcg_temp_new_i32();
2299
2300 tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRR_T);
2301 tcg_gen_movcond_i32(OP2 & 1 ? TCG_COND_NE : TCG_COND_EQ,
2302 cpu_FR[RRR_R], tmp, zero,
2303 cpu_FR[RRR_S], cpu_FR[RRR_R]);
2304
2305 tcg_temp_free(tmp);
2306 tcg_temp_free(zero);
2307 }
2308 break;
2309
2310 default: /*reserved*/
2311 RESERVED();
2312 break;
2313 }
2314 break;
2315
2316 default: /*reserved*/
2317 RESERVED();
2318 break;
2319 }
2320 break;
2321
2322 case 1: /*L32R*/
2323 if (gen_window_check1(dc, RRR_T)) {
2324 TCGv_i32 tmp = tcg_const_i32(
2325 ((dc->tb->flags & XTENSA_TBFLAG_LITBASE) ?
2326 0 : ((dc->pc + 3) & ~3)) +
2327 (0xfffc0000 | (RI16_IMM16 << 2)));
2328
2329 if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
2330 tcg_gen_add_i32(tmp, tmp, dc->litbase);
2331 }
2332 tcg_gen_qemu_ld32u(cpu_R[RRR_T], tmp, dc->cring);
2333 tcg_temp_free(tmp);
2334 }
2335 break;
2336
2337 case 2: /*LSAI*/
2338 #define gen_load_store(type, shift) do { \
2339 if (gen_window_check2(dc, RRI8_S, RRI8_T)) { \
2340 TCGv_i32 addr = tcg_temp_new_i32(); \
2341 \
2342 tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << shift); \
2343 if (shift) { \
2344 gen_load_store_alignment(dc, shift, addr, false); \
2345 } \
2346 tcg_gen_qemu_##type(cpu_R[RRI8_T], addr, dc->cring); \
2347 tcg_temp_free(addr); \
2348 } \
2349 } while (0)
2350
2351 switch (RRI8_R) {
2352 case 0: /*L8UI*/
2353 gen_load_store(ld8u, 0);
2354 break;
2355
2356 case 1: /*L16UI*/
2357 gen_load_store(ld16u, 1);
2358 break;
2359
2360 case 2: /*L32I*/
2361 gen_load_store(ld32u, 2);
2362 break;
2363
2364 case 4: /*S8I*/
2365 gen_load_store(st8, 0);
2366 break;
2367
2368 case 5: /*S16I*/
2369 gen_load_store(st16, 1);
2370 break;
2371
2372 case 6: /*S32I*/
2373 gen_load_store(st32, 2);
2374 break;
2375
2376 #define gen_dcache_hit_test(w, shift) do { \
2377 if (gen_window_check1(dc, RRI##w##_S)) { \
2378 TCGv_i32 addr = tcg_temp_new_i32(); \
2379 TCGv_i32 res = tcg_temp_new_i32(); \
2380 tcg_gen_addi_i32(addr, cpu_R[RRI##w##_S], \
2381 RRI##w##_IMM##w << shift); \
2382 tcg_gen_qemu_ld8u(res, addr, dc->cring); \
2383 tcg_temp_free(addr); \
2384 tcg_temp_free(res); \
2385 } \
2386 } while (0)
2387
2388 #define gen_dcache_hit_test4() gen_dcache_hit_test(4, 4)
2389 #define gen_dcache_hit_test8() gen_dcache_hit_test(8, 2)
2390
2391 case 7: /*CACHEc*/
2392 if (RRI8_T < 8) {
2393 HAS_OPTION(XTENSA_OPTION_DCACHE);
2394 }
2395
2396 switch (RRI8_T) {
2397 case 0: /*DPFRc*/
2398 gen_window_check1(dc, RRI8_S);
2399 break;
2400
2401 case 1: /*DPFWc*/
2402 gen_window_check1(dc, RRI8_S);
2403 break;
2404
2405 case 2: /*DPFROc*/
2406 gen_window_check1(dc, RRI8_S);
2407 break;
2408
2409 case 3: /*DPFWOc*/
2410 gen_window_check1(dc, RRI8_S);
2411 break;
2412
2413 case 4: /*DHWBc*/
2414 gen_dcache_hit_test8();
2415 break;
2416
2417 case 5: /*DHWBIc*/
2418 gen_dcache_hit_test8();
2419 break;
2420
2421 case 6: /*DHIc*/
2422 if (gen_check_privilege(dc)) {
2423 gen_dcache_hit_test8();
2424 }
2425 break;
2426
2427 case 7: /*DIIc*/
2428 if (gen_check_privilege(dc)) {
2429 gen_window_check1(dc, RRI8_S);
2430 }
2431 break;
2432
2433 case 8: /*DCEc*/
2434 switch (OP1) {
2435 case 0: /*DPFLl*/
2436 HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
2437 if (gen_check_privilege(dc)) {
2438 gen_dcache_hit_test4();
2439 }
2440 break;
2441
2442 case 2: /*DHUl*/
2443 HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
2444 if (gen_check_privilege(dc)) {
2445 gen_dcache_hit_test4();
2446 }
2447 break;
2448
2449 case 3: /*DIUl*/
2450 HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
2451 if (gen_check_privilege(dc)) {
2452 gen_window_check1(dc, RRI4_S);
2453 }
2454 break;
2455
2456 case 4: /*DIWBc*/
2457 HAS_OPTION(XTENSA_OPTION_DCACHE);
2458 if (gen_check_privilege(dc)) {
2459 gen_window_check1(dc, RRI4_S);
2460 }
2461 break;
2462
2463 case 5: /*DIWBIc*/
2464 HAS_OPTION(XTENSA_OPTION_DCACHE);
2465 if (gen_check_privilege(dc)) {
2466 gen_window_check1(dc, RRI4_S);
2467 }
2468 break;
2469
2470 default: /*reserved*/
2471 RESERVED();
2472 break;
2473
2474 }
2475 break;
2476
2477 #undef gen_dcache_hit_test
2478 #undef gen_dcache_hit_test4
2479 #undef gen_dcache_hit_test8
2480
2481 #define gen_icache_hit_test(w, shift) do { \
2482 if (gen_window_check1(dc, RRI##w##_S)) { \
2483 TCGv_i32 addr = tcg_temp_new_i32(); \
2484 tcg_gen_movi_i32(cpu_pc, dc->pc); \
2485 tcg_gen_addi_i32(addr, cpu_R[RRI##w##_S], \
2486 RRI##w##_IMM##w << shift); \
2487 gen_helper_itlb_hit_test(cpu_env, addr); \
2488 tcg_temp_free(addr); \
2489 }\
2490 } while (0)
2491
2492 #define gen_icache_hit_test4() gen_icache_hit_test(4, 4)
2493 #define gen_icache_hit_test8() gen_icache_hit_test(8, 2)
2494
2495 case 12: /*IPFc*/
2496 HAS_OPTION(XTENSA_OPTION_ICACHE);
2497 gen_window_check1(dc, RRI8_S);
2498 break;
2499
2500 case 13: /*ICEc*/
2501 switch (OP1) {
2502 case 0: /*IPFLl*/
2503 HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
2504 if (gen_check_privilege(dc)) {
2505 gen_icache_hit_test4();
2506 }
2507 break;
2508
2509 case 2: /*IHUl*/
2510 HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
2511 if (gen_check_privilege(dc)) {
2512 gen_icache_hit_test4();
2513 }
2514 break;
2515
2516 case 3: /*IIUl*/
2517 HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
2518 if (gen_check_privilege(dc)) {
2519 gen_window_check1(dc, RRI4_S);
2520 }
2521 break;
2522
2523 default: /*reserved*/
2524 RESERVED();
2525 break;
2526 }
2527 break;
2528
2529 case 14: /*IHIc*/
2530 HAS_OPTION(XTENSA_OPTION_ICACHE);
2531 gen_icache_hit_test8();
2532 break;
2533
2534 case 15: /*IIIc*/
2535 HAS_OPTION(XTENSA_OPTION_ICACHE);
2536 if (gen_check_privilege(dc)) {
2537 gen_window_check1(dc, RRI8_S);
2538 }
2539 break;
2540
2541 default: /*reserved*/
2542 RESERVED();
2543 break;
2544 }
2545 break;
2546
2547 #undef gen_icache_hit_test
2548 #undef gen_icache_hit_test4
2549 #undef gen_icache_hit_test8
2550
2551 case 9: /*L16SI*/
2552 gen_load_store(ld16s, 1);
2553 break;
2554 #undef gen_load_store
2555
2556 case 10: /*MOVI*/
2557 if (gen_window_check1(dc, RRI8_T)) {
2558 tcg_gen_movi_i32(cpu_R[RRI8_T],
2559 RRI8_IMM8 | (RRI8_S << 8) |
2560 ((RRI8_S & 0x8) ? 0xfffff000 : 0));
2561 }
2562 break;
2563
2564 #define gen_load_store_no_hw_align(type) do { \
2565 if (gen_window_check2(dc, RRI8_S, RRI8_T)) { \
2566 TCGv_i32 addr = tcg_temp_local_new_i32(); \
2567 tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2); \
2568 gen_load_store_alignment(dc, 2, addr, true); \
2569 tcg_gen_qemu_##type(cpu_R[RRI8_T], addr, dc->cring); \
2570 tcg_temp_free(addr); \
2571 } \
2572 } while (0)
2573
2574 case 11: /*L32AIy*/
2575 HAS_OPTION(XTENSA_OPTION_MP_SYNCHRO);
2576 gen_load_store_no_hw_align(ld32u); /*TODO acquire?*/
2577 break;
2578
2579 case 12: /*ADDI*/
2580 if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
2581 tcg_gen_addi_i32(cpu_R[RRI8_T], cpu_R[RRI8_S], RRI8_IMM8_SE);
2582 }
2583 break;
2584
2585 case 13: /*ADDMI*/
2586 if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
2587 tcg_gen_addi_i32(cpu_R[RRI8_T], cpu_R[RRI8_S],
2588 RRI8_IMM8_SE << 8);
2589 }
2590 break;
2591
2592 case 14: /*S32C1Iy*/
2593 HAS_OPTION(XTENSA_OPTION_CONDITIONAL_STORE);
2594 if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
2595 TCGLabel *label = gen_new_label();
2596 TCGv_i32 tmp = tcg_temp_local_new_i32();
2597 TCGv_i32 addr = tcg_temp_local_new_i32();
2598 TCGv_i32 tpc;
2599
2600 tcg_gen_mov_i32(tmp, cpu_R[RRI8_T]);
2601 tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2);
2602 gen_load_store_alignment(dc, 2, addr, true);
2603
2604 tpc = tcg_const_i32(dc->pc);
2605 gen_helper_check_atomctl(cpu_env, tpc, addr);
2606 tcg_gen_qemu_ld32u(cpu_R[RRI8_T], addr, dc->cring);
2607 tcg_gen_brcond_i32(TCG_COND_NE, cpu_R[RRI8_T],
2608 cpu_SR[SCOMPARE1], label);
2609
2610 tcg_gen_qemu_st32(tmp, addr, dc->cring);
2611
2612 gen_set_label(label);
2613 tcg_temp_free(tpc);
2614 tcg_temp_free(addr);
2615 tcg_temp_free(tmp);
2616 }
2617 break;
2618
2619 case 15: /*S32RIy*/
2620 HAS_OPTION(XTENSA_OPTION_MP_SYNCHRO);
2621 gen_load_store_no_hw_align(st32); /*TODO release?*/
2622 break;
2623 #undef gen_load_store_no_hw_align
2624
2625 default: /*reserved*/
2626 RESERVED();
2627 break;
2628 }
2629 break;
2630
2631 case 3: /*LSCIp*/
2632 switch (RRI8_R) {
2633 case 0: /*LSIf*/
2634 case 4: /*SSIf*/
2635 case 8: /*LSIUf*/
2636 case 12: /*SSIUf*/
2637 HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
2638 if (gen_window_check1(dc, RRI8_S) &&
2639 gen_check_cpenable(dc, 0)) {
2640 TCGv_i32 addr = tcg_temp_new_i32();
2641 tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2);
2642 gen_load_store_alignment(dc, 2, addr, false);
2643 if (RRI8_R & 0x4) {
2644 tcg_gen_qemu_st32(cpu_FR[RRI8_T], addr, dc->cring);
2645 } else {
2646 tcg_gen_qemu_ld32u(cpu_FR[RRI8_T], addr, dc->cring);
2647 }
2648 if (RRI8_R & 0x8) {
2649 tcg_gen_mov_i32(cpu_R[RRI8_S], addr);
2650 }
2651 tcg_temp_free(addr);
2652 }
2653 break;
2654
2655 default: /*reserved*/
2656 RESERVED();
2657 break;
2658 }
2659 break;
2660
2661 case 4: /*MAC16d*/
2662 HAS_OPTION(XTENSA_OPTION_MAC16);
2663 {
2664 enum {
2665 MAC16_UMUL = 0x0,
2666 MAC16_MUL = 0x4,
2667 MAC16_MULA = 0x8,
2668 MAC16_MULS = 0xc,
2669 MAC16_NONE = 0xf,
2670 } op = OP1 & 0xc;
2671 bool is_m1_sr = (OP2 & 0x3) == 2;
2672 bool is_m2_sr = (OP2 & 0xc) == 0;
2673 uint32_t ld_offset = 0;
2674
2675 if (OP2 > 9) {
2676 RESERVED();
2677 }
2678
2679 switch (OP2 & 2) {
2680 case 0: /*MACI?/MACC?*/
2681 is_m1_sr = true;
2682 ld_offset = (OP2 & 1) ? -4 : 4;
2683
2684 if (OP2 >= 8) { /*MACI/MACC*/
2685 if (OP1 == 0) { /*LDINC/LDDEC*/
2686 op = MAC16_NONE;
2687 } else {
2688 RESERVED();
2689 }
2690 } else if (op != MAC16_MULA) { /*MULA.*.*.LDINC/LDDEC*/
2691 RESERVED();
2692 }
2693 break;
2694
2695 case 2: /*MACD?/MACA?*/
2696 if (op == MAC16_UMUL && OP2 != 7) { /*UMUL only in MACAA*/
2697 RESERVED();
2698 }
2699 break;
2700 }
2701
2702 if (op != MAC16_NONE) {
2703 if (!is_m1_sr && !gen_window_check1(dc, RRR_S)) {
2704 break;
2705 }
2706 if (!is_m2_sr && !gen_window_check1(dc, RRR_T)) {
2707 break;
2708 }
2709 }
2710
2711 if (ld_offset && !gen_window_check1(dc, RRR_S)) {
2712 break;
2713 }
2714
2715 {
2716 TCGv_i32 vaddr = tcg_temp_new_i32();
2717 TCGv_i32 mem32 = tcg_temp_new_i32();
2718
2719 if (ld_offset) {
2720 tcg_gen_addi_i32(vaddr, cpu_R[RRR_S], ld_offset);
2721 gen_load_store_alignment(dc, 2, vaddr, false);
2722 tcg_gen_qemu_ld32u(mem32, vaddr, dc->cring);
2723 }
2724 if (op != MAC16_NONE) {
2725 TCGv_i32 m1 = gen_mac16_m(
2726 is_m1_sr ? cpu_SR[MR + RRR_X] : cpu_R[RRR_S],
2727 OP1 & 1, op == MAC16_UMUL);
2728 TCGv_i32 m2 = gen_mac16_m(
2729 is_m2_sr ? cpu_SR[MR + 2 + RRR_Y] : cpu_R[RRR_T],
2730 OP1 & 2, op == MAC16_UMUL);
2731
2732 if (op == MAC16_MUL || op == MAC16_UMUL) {
2733 tcg_gen_mul_i32(cpu_SR[ACCLO], m1, m2);
2734 if (op == MAC16_UMUL) {
2735 tcg_gen_movi_i32(cpu_SR[ACCHI], 0);
2736 } else {
2737 tcg_gen_sari_i32(cpu_SR[ACCHI], cpu_SR[ACCLO], 31);
2738 }
2739 } else {
2740 TCGv_i32 lo = tcg_temp_new_i32();
2741 TCGv_i32 hi = tcg_temp_new_i32();
2742
2743 tcg_gen_mul_i32(lo, m1, m2);
2744 tcg_gen_sari_i32(hi, lo, 31);
2745 if (op == MAC16_MULA) {
2746 tcg_gen_add2_i32(cpu_SR[ACCLO], cpu_SR[ACCHI],
2747 cpu_SR[ACCLO], cpu_SR[ACCHI],
2748 lo, hi);
2749 } else {
2750 tcg_gen_sub2_i32(cpu_SR[ACCLO], cpu_SR[ACCHI],
2751 cpu_SR[ACCLO], cpu_SR[ACCHI],
2752 lo, hi);
2753 }
2754 tcg_gen_ext8s_i32(cpu_SR[ACCHI], cpu_SR[ACCHI]);
2755
2756 tcg_temp_free_i32(lo);
2757 tcg_temp_free_i32(hi);
2758 }
2759 tcg_temp_free(m1);
2760 tcg_temp_free(m2);
2761 }
2762 if (ld_offset) {
2763 tcg_gen_mov_i32(cpu_R[RRR_S], vaddr);
2764 tcg_gen_mov_i32(cpu_SR[MR + RRR_W], mem32);
2765 }
2766 tcg_temp_free(vaddr);
2767 tcg_temp_free(mem32);
2768 }
2769 }
2770 break;
2771
2772 case 5: /*CALLN*/
2773 switch (CALL_N) {
2774 case 0: /*CALL0*/
2775 tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
2776 gen_jumpi(dc, (dc->pc & ~3) + (CALL_OFFSET_SE << 2) + 4, 0);
2777 break;
2778
2779 case 1: /*CALL4w*/
2780 case 2: /*CALL8w*/
2781 case 3: /*CALL12w*/
2782 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
2783 if (gen_window_check1(dc, CALL_N << 2)) {
2784 gen_callwi(dc, CALL_N,
2785 (dc->pc & ~3) + (CALL_OFFSET_SE << 2) + 4, 0);
2786 }
2787 break;
2788 }
2789 break;
2790
2791 case 6: /*SI*/
2792 switch (CALL_N) {
2793 case 0: /*J*/
2794 gen_jumpi(dc, dc->pc + 4 + CALL_OFFSET_SE, 0);
2795 break;
2796
2797 case 1: /*BZ*/
2798 if (gen_window_check1(dc, BRI12_S)) {
2799 static const TCGCond cond[] = {
2800 TCG_COND_EQ, /*BEQZ*/
2801 TCG_COND_NE, /*BNEZ*/
2802 TCG_COND_LT, /*BLTZ*/
2803 TCG_COND_GE, /*BGEZ*/
2804 };
2805
2806 gen_brcondi(dc, cond[BRI12_M & 3], cpu_R[BRI12_S], 0,
2807 4 + BRI12_IMM12_SE);
2808 }
2809 break;
2810
2811 case 2: /*BI0*/
2812 if (gen_window_check1(dc, BRI8_S)) {
2813 static const TCGCond cond[] = {
2814 TCG_COND_EQ, /*BEQI*/
2815 TCG_COND_NE, /*BNEI*/
2816 TCG_COND_LT, /*BLTI*/
2817 TCG_COND_GE, /*BGEI*/
2818 };
2819
2820 gen_brcondi(dc, cond[BRI8_M & 3],
2821 cpu_R[BRI8_S], B4CONST[BRI8_R], 4 + BRI8_IMM8_SE);
2822 }
2823 break;
2824
2825 case 3: /*BI1*/
2826 switch (BRI8_M) {
2827 case 0: /*ENTRYw*/
2828 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
2829 {
2830 TCGv_i32 pc = tcg_const_i32(dc->pc);
2831 TCGv_i32 s = tcg_const_i32(BRI12_S);
2832 TCGv_i32 imm = tcg_const_i32(BRI12_IMM12);
2833 gen_helper_entry(cpu_env, pc, s, imm);
2834 tcg_temp_free(imm);
2835 tcg_temp_free(s);
2836 tcg_temp_free(pc);
2837 /* This can change tb->flags, so exit tb */
2838 gen_jumpi_check_loop_end(dc, -1);
2839 }
2840 break;
2841
2842 case 1: /*B1*/
2843 switch (BRI8_R) {
2844 case 0: /*BFp*/
2845 case 1: /*BTp*/
2846 HAS_OPTION(XTENSA_OPTION_BOOLEAN);
2847 {
2848 TCGv_i32 tmp = tcg_temp_new_i32();
2849 tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRI8_S);
2850 gen_brcondi(dc,
2851 BRI8_R == 1 ? TCG_COND_NE : TCG_COND_EQ,
2852 tmp, 0, 4 + RRI8_IMM8_SE);
2853 tcg_temp_free(tmp);
2854 }
2855 break;
2856
2857 case 8: /*LOOP*/
2858 case 9: /*LOOPNEZ*/
2859 case 10: /*LOOPGTZ*/
2860 HAS_OPTION(XTENSA_OPTION_LOOP);
2861 if (gen_window_check1(dc, RRI8_S)) {
2862 uint32_t lend = dc->pc + RRI8_IMM8 + 4;
2863 TCGv_i32 tmp = tcg_const_i32(lend);
2864
2865 tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_R[RRI8_S], 1);
2866 tcg_gen_movi_i32(cpu_SR[LBEG], dc->next_pc);
2867 gen_helper_wsr_lend(cpu_env, tmp);
2868 tcg_temp_free(tmp);
2869
2870 if (BRI8_R > 8) {
2871 TCGLabel *label = gen_new_label();
2872 tcg_gen_brcondi_i32(
2873 BRI8_R == 9 ? TCG_COND_NE : TCG_COND_GT,
2874 cpu_R[RRI8_S], 0, label);
2875 gen_jumpi(dc, lend, 1);
2876 gen_set_label(label);
2877 }
2878
2879 gen_jumpi(dc, dc->next_pc, 0);
2880 }
2881 break;
2882
2883 default: /*reserved*/
2884 RESERVED();
2885 break;
2886
2887 }
2888 break;
2889
2890 case 2: /*BLTUI*/
2891 case 3: /*BGEUI*/
2892 if (gen_window_check1(dc, BRI8_S)) {
2893 gen_brcondi(dc, BRI8_M == 2 ? TCG_COND_LTU : TCG_COND_GEU,
2894 cpu_R[BRI8_S], B4CONSTU[BRI8_R],
2895 4 + BRI8_IMM8_SE);
2896 }
2897 break;
2898 }
2899 break;
2900
2901 }
2902 break;
2903
2904 case 7: /*B*/
2905 {
2906 TCGCond eq_ne = (RRI8_R & 8) ? TCG_COND_NE : TCG_COND_EQ;
2907
2908 switch (RRI8_R & 7) {
2909 case 0: /*BNONE*/ /*BANY*/
2910 if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
2911 TCGv_i32 tmp = tcg_temp_new_i32();
2912 tcg_gen_and_i32(tmp, cpu_R[RRI8_S], cpu_R[RRI8_T]);
2913 gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
2914 tcg_temp_free(tmp);
2915 }
2916 break;
2917
2918 case 1: /*BEQ*/ /*BNE*/
2919 case 2: /*BLT*/ /*BGE*/
2920 case 3: /*BLTU*/ /*BGEU*/
2921 if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
2922 static const TCGCond cond[] = {
2923 [1] = TCG_COND_EQ,
2924 [2] = TCG_COND_LT,
2925 [3] = TCG_COND_LTU,
2926 [9] = TCG_COND_NE,
2927 [10] = TCG_COND_GE,
2928 [11] = TCG_COND_GEU,
2929 };
2930 gen_brcond(dc, cond[RRI8_R], cpu_R[RRI8_S], cpu_R[RRI8_T],
2931 4 + RRI8_IMM8_SE);
2932 }
2933 break;
2934
2935 case 4: /*BALL*/ /*BNALL*/
2936 if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
2937 TCGv_i32 tmp = tcg_temp_new_i32();
2938 tcg_gen_and_i32(tmp, cpu_R[RRI8_S], cpu_R[RRI8_T]);
2939 gen_brcond(dc, eq_ne, tmp, cpu_R[RRI8_T],
2940 4 + RRI8_IMM8_SE);
2941 tcg_temp_free(tmp);
2942 }
2943 break;
2944
2945 case 5: /*BBC*/ /*BBS*/
2946 if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
2947 #ifdef TARGET_WORDS_BIGENDIAN
2948 TCGv_i32 bit = tcg_const_i32(0x80000000);
2949 #else
2950 TCGv_i32 bit = tcg_const_i32(0x00000001);
2951 #endif
2952 TCGv_i32 tmp = tcg_temp_new_i32();
2953 tcg_gen_andi_i32(tmp, cpu_R[RRI8_T], 0x1f);
2954 #ifdef TARGET_WORDS_BIGENDIAN
2955 tcg_gen_shr_i32(bit, bit, tmp);
2956 #else
2957 tcg_gen_shl_i32(bit, bit, tmp);
2958 #endif
2959 tcg_gen_and_i32(tmp, cpu_R[RRI8_S], bit);
2960 gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
2961 tcg_temp_free(tmp);
2962 tcg_temp_free(bit);
2963 }
2964 break;
2965
2966 case 6: /*BBCI*/ /*BBSI*/
2967 case 7:
2968 if (gen_window_check1(dc, RRI8_S)) {
2969 TCGv_i32 tmp = tcg_temp_new_i32();
2970 tcg_gen_andi_i32(tmp, cpu_R[RRI8_S],
2971 #ifdef TARGET_WORDS_BIGENDIAN
2972 0x80000000 >> (((RRI8_R & 1) << 4) | RRI8_T));
2973 #else
2974 0x00000001 << (((RRI8_R & 1) << 4) | RRI8_T));
2975 #endif
2976 gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
2977 tcg_temp_free(tmp);
2978 }
2979 break;
2980
2981 }
2982 }
2983 break;
2984
2985 #define gen_narrow_load_store(type) do { \
2986 if (gen_window_check2(dc, RRRN_S, RRRN_T)) { \
2987 TCGv_i32 addr = tcg_temp_new_i32(); \
2988 tcg_gen_addi_i32(addr, cpu_R[RRRN_S], RRRN_R << 2); \
2989 gen_load_store_alignment(dc, 2, addr, false); \
2990 tcg_gen_qemu_##type(cpu_R[RRRN_T], addr, dc->cring); \
2991 tcg_temp_free(addr); \
2992 } \
2993 } while (0)
2994
2995 case 8: /*L32I.Nn*/
2996 gen_narrow_load_store(ld32u);
2997 break;
2998
2999 case 9: /*S32I.Nn*/
3000 gen_narrow_load_store(st32);
3001 break;
3002 #undef gen_narrow_load_store
3003
3004 case 10: /*ADD.Nn*/
3005 if (gen_window_check3(dc, RRRN_R, RRRN_S, RRRN_T)) {
3006 tcg_gen_add_i32(cpu_R[RRRN_R], cpu_R[RRRN_S], cpu_R[RRRN_T]);
3007 }
3008 break;
3009
3010 case 11: /*ADDI.Nn*/
3011 if (gen_window_check2(dc, RRRN_R, RRRN_S)) {
3012 tcg_gen_addi_i32(cpu_R[RRRN_R], cpu_R[RRRN_S],
3013 RRRN_T ? RRRN_T : -1);
3014 }
3015 break;
3016
3017 case 12: /*ST2n*/
3018 if (!gen_window_check1(dc, RRRN_S)) {
3019 break;
3020 }
3021 if (RRRN_T < 8) { /*MOVI.Nn*/
3022 tcg_gen_movi_i32(cpu_R[RRRN_S],
3023 RRRN_R | (RRRN_T << 4) |
3024 ((RRRN_T & 6) == 6 ? 0xffffff80 : 0));
3025 } else { /*BEQZ.Nn*/ /*BNEZ.Nn*/
3026 TCGCond eq_ne = (RRRN_T & 4) ? TCG_COND_NE : TCG_COND_EQ;
3027
3028 gen_brcondi(dc, eq_ne, cpu_R[RRRN_S], 0,
3029 4 + (RRRN_R | ((RRRN_T & 3) << 4)));
3030 }
3031 break;
3032
3033 case 13: /*ST3n*/
3034 switch (RRRN_R) {
3035 case 0: /*MOV.Nn*/
3036 if (gen_window_check2(dc, RRRN_S, RRRN_T)) {
3037 tcg_gen_mov_i32(cpu_R[RRRN_T], cpu_R[RRRN_S]);
3038 }
3039 break;
3040
3041 case 15: /*S3*/
3042 switch (RRRN_T) {
3043 case 0: /*RET.Nn*/
3044 gen_jump(dc, cpu_R[0]);
3045 break;
3046
3047 case 1: /*RETW.Nn*/
3048 HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
3049 {
3050 TCGv_i32 tmp = tcg_const_i32(dc->pc);
3051 gen_helper_retw(tmp, cpu_env, tmp);
3052 gen_jump(dc, tmp);
3053 tcg_temp_free(tmp);
3054 }
3055 break;
3056
3057 case 2: /*BREAK.Nn*/
3058 HAS_OPTION(XTENSA_OPTION_DEBUG);
3059 if (dc->debug) {
3060 gen_debug_exception(dc, DEBUGCAUSE_BN);
3061 }
3062 break;
3063
3064 case 3: /*NOP.Nn*/
3065 break;
3066
3067 case 6: /*ILL.Nn*/
3068 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
3069 break;
3070
3071 default: /*reserved*/
3072 RESERVED();
3073 break;
3074 }
3075 break;
3076
3077 default: /*reserved*/
3078 RESERVED();
3079 break;
3080 }
3081 break;
3082
3083 default: /*reserved*/
3084 RESERVED();
3085 break;
3086 }
3087
3088 if (dc->is_jmp == DISAS_NEXT) {
3089 gen_check_loop_end(dc, 0);
3090 }
3091 dc->pc = dc->next_pc;
3092
3093 return;
3094
3095 invalid_opcode:
3096 qemu_log_mask(LOG_GUEST_ERROR, "INVALID(pc = %08x)\n", dc->pc);
3097 gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
3098 #undef HAS_OPTION
3099 }
3100
3101 static inline unsigned xtensa_insn_len(CPUXtensaState *env, DisasContext *dc)
3102 {
3103 uint8_t b0 = cpu_ldub_code(env, dc->pc);
3104 return xtensa_op0_insn_len(OP0);
3105 }
3106
3107 static void gen_ibreak_check(CPUXtensaState *env, DisasContext *dc)
3108 {
3109 unsigned i;
3110
3111 for (i = 0; i < dc->config->nibreak; ++i) {
3112 if ((env->sregs[IBREAKENABLE] & (1 << i)) &&
3113 env->sregs[IBREAKA + i] == dc->pc) {
3114 gen_debug_exception(dc, DEBUGCAUSE_IB);
3115 break;
3116 }
3117 }
3118 }
3119
3120 void gen_intermediate_code(CPUXtensaState *env, TranslationBlock *tb)
3121 {
3122 XtensaCPU *cpu = xtensa_env_get_cpu(env);
3123 CPUState *cs = CPU(cpu);
3124 DisasContext dc;
3125 int insn_count = 0;
3126 int max_insns = tb->cflags & CF_COUNT_MASK;
3127 uint32_t pc_start = tb->pc;
3128 uint32_t next_page_start =
3129 (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
3130
3131 if (max_insns == 0) {
3132 max_insns = CF_COUNT_MASK;
3133 }
3134 if (max_insns > TCG_MAX_INSNS) {
3135 max_insns = TCG_MAX_INSNS;
3136 }
3137
3138 dc.config = env->config;
3139 dc.singlestep_enabled = cs->singlestep_enabled;
3140 dc.tb = tb;
3141 dc.pc = pc_start;
3142 dc.ring = tb->flags & XTENSA_TBFLAG_RING_MASK;
3143 dc.cring = (tb->flags & XTENSA_TBFLAG_EXCM) ? 0 : dc.ring;
3144 dc.lbeg = env->sregs[LBEG];
3145 dc.lend = env->sregs[LEND];
3146 dc.is_jmp = DISAS_NEXT;
3147 dc.debug = tb->flags & XTENSA_TBFLAG_DEBUG;
3148 dc.icount = tb->flags & XTENSA_TBFLAG_ICOUNT;
3149 dc.cpenable = (tb->flags & XTENSA_TBFLAG_CPENABLE_MASK) >>
3150 XTENSA_TBFLAG_CPENABLE_SHIFT;
3151 dc.window = ((tb->flags & XTENSA_TBFLAG_WINDOW_MASK) >>
3152 XTENSA_TBFLAG_WINDOW_SHIFT);
3153
3154 init_litbase(&dc);
3155 init_sar_tracker(&dc);
3156 if (dc.icount) {
3157 dc.next_icount = tcg_temp_local_new_i32();
3158 }
3159
3160 gen_tb_start(tb);
3161
3162 if ((tb->cflags & CF_USE_ICOUNT) &&
3163 (tb->flags & XTENSA_TBFLAG_YIELD)) {
3164 tcg_gen_insn_start(dc.pc);
3165 ++insn_count;
3166 gen_exception(&dc, EXCP_YIELD);
3167 dc.is_jmp = DISAS_UPDATE;
3168 goto done;
3169 }
3170 if (tb->flags & XTENSA_TBFLAG_EXCEPTION) {
3171 tcg_gen_insn_start(dc.pc);
3172 ++insn_count;
3173 gen_exception(&dc, EXCP_DEBUG);
3174 dc.is_jmp = DISAS_UPDATE;
3175 goto done;
3176 }
3177
3178 do {
3179 tcg_gen_insn_start(dc.pc);
3180 ++insn_count;
3181
3182 if (unlikely(cpu_breakpoint_test(cs, dc.pc, BP_ANY))) {
3183 tcg_gen_movi_i32(cpu_pc, dc.pc);
3184 gen_exception(&dc, EXCP_DEBUG);
3185 dc.is_jmp = DISAS_UPDATE;
3186 /* The address covered by the breakpoint must be included in
3187 [tb->pc, tb->pc + tb->size) in order to for it to be
3188 properly cleared -- thus we increment the PC here so that
3189 the logic setting tb->size below does the right thing. */
3190 dc.pc += 2;
3191 break;
3192 }
3193
3194 if (insn_count == max_insns && (tb->cflags & CF_LAST_IO)) {
3195 gen_io_start();
3196 }
3197
3198 if (dc.icount) {
3199 TCGLabel *label = gen_new_label();
3200
3201 tcg_gen_addi_i32(dc.next_icount, cpu_SR[ICOUNT], 1);
3202 tcg_gen_brcondi_i32(TCG_COND_NE, dc.next_icount, 0, label);
3203 tcg_gen_mov_i32(dc.next_icount, cpu_SR[ICOUNT]);
3204 if (dc.debug) {
3205 gen_debug_exception(&dc, DEBUGCAUSE_IC);
3206 }
3207 gen_set_label(label);
3208 }
3209
3210 if (dc.debug) {
3211 gen_ibreak_check(env, &dc);
3212 }
3213
3214 disas_xtensa_insn(env, &dc);
3215 if (dc.icount) {
3216 tcg_gen_mov_i32(cpu_SR[ICOUNT], dc.next_icount);
3217 }
3218 if (cs->singlestep_enabled) {
3219 tcg_gen_movi_i32(cpu_pc, dc.pc);
3220 gen_exception(&dc, EXCP_DEBUG);
3221 break;
3222 }
3223 } while (dc.is_jmp == DISAS_NEXT &&
3224 insn_count < max_insns &&
3225 dc.pc < next_page_start &&
3226 dc.pc + xtensa_insn_len(env, &dc) <= next_page_start &&
3227 !tcg_op_buf_full());
3228 done:
3229 reset_litbase(&dc);
3230 reset_sar_tracker(&dc);
3231 if (dc.icount) {
3232 tcg_temp_free(dc.next_icount);
3233 }
3234
3235 if (tb->cflags & CF_LAST_IO) {
3236 gen_io_end();
3237 }
3238
3239 if (dc.is_jmp == DISAS_NEXT) {
3240 gen_jumpi(&dc, dc.pc, 0);
3241 }
3242 gen_tb_end(tb, insn_count);
3243
3244 #ifdef DEBUG_DISAS
3245 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
3246 && qemu_log_in_addr_range(pc_start)) {
3247 qemu_log_lock();
3248 qemu_log("----------------\n");
3249 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3250 log_target_disas(cs, pc_start, dc.pc - pc_start, 0);
3251 qemu_log("\n");
3252 qemu_log_unlock();
3253 }
3254 #endif
3255 tb->size = dc.pc - pc_start;
3256 tb->icount = insn_count;
3257 }
3258
3259 void xtensa_cpu_dump_state(CPUState *cs, FILE *f,
3260 fprintf_function cpu_fprintf, int flags)
3261 {
3262 XtensaCPU *cpu = XTENSA_CPU(cs);
3263 CPUXtensaState *env = &cpu->env;
3264 int i, j;
3265
3266 cpu_fprintf(f, "PC=%08x\n\n", env->pc);
3267
3268 for (i = j = 0; i < 256; ++i) {
3269 if (xtensa_option_bits_enabled(env->config, sregnames[i].opt_bits)) {
3270 cpu_fprintf(f, "%12s=%08x%c", sregnames[i].name, env->sregs[i],
3271 (j++ % 4) == 3 ? '\n' : ' ');
3272 }
3273 }
3274
3275 cpu_fprintf(f, (j % 4) == 0 ? "\n" : "\n\n");
3276
3277 for (i = j = 0; i < 256; ++i) {
3278 if (xtensa_option_bits_enabled(env->config, uregnames[i].opt_bits)) {
3279 cpu_fprintf(f, "%s=%08x%c", uregnames[i].name, env->uregs[i],
3280 (j++ % 4) == 3 ? '\n' : ' ');
3281 }
3282 }
3283
3284 cpu_fprintf(f, (j % 4) == 0 ? "\n" : "\n\n");
3285
3286 for (i = 0; i < 16; ++i) {
3287 cpu_fprintf(f, " A%02d=%08x%c", i, env->regs[i],
3288 (i % 4) == 3 ? '\n' : ' ');
3289 }
3290
3291 cpu_fprintf(f, "\n");
3292
3293 for (i = 0; i < env->config->nareg; ++i) {
3294 cpu_fprintf(f, "AR%02d=%08x%c", i, env->phys_regs[i],
3295 (i % 4) == 3 ? '\n' : ' ');
3296 }
3297
3298 if (xtensa_option_enabled(env->config, XTENSA_OPTION_FP_COPROCESSOR)) {
3299 cpu_fprintf(f, "\n");
3300
3301 for (i = 0; i < 16; ++i) {
3302 cpu_fprintf(f, "F%02d=%08x (%+10.8e)%c", i,
3303 float32_val(env->fregs[i].f32[FP_F32_LOW]),
3304 *(float *)(env->fregs[i].f32 + FP_F32_LOW),
3305 (i % 2) == 1 ? '\n' : ' ');
3306 }
3307 }
3308 }
3309
3310 void restore_state_to_opc(CPUXtensaState *env, TranslationBlock *tb,
3311 target_ulong *data)
3312 {
3313 env->pc = data[0];
3314 }
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