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1 | /* | |
2 | * CRIS emulation for qemu: main translation routines. | |
3 | * | |
4 | * Copyright (c) 2008 AXIS Communications AB | |
5 | * Written by Edgar E. Iglesias. | |
6 | * | |
7 | * This library is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2 of the License, or (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | /* | |
22 | * FIXME: | |
23 | * The condition code translation is in need of attention. | |
24 | */ | |
25 | ||
26 | #include "qemu/osdep.h" | |
27 | #include "cpu.h" | |
28 | #include "disas/disas.h" | |
29 | #include "exec/exec-all.h" | |
30 | #include "tcg-op.h" | |
31 | #include "exec/helper-proto.h" | |
32 | #include "mmu.h" | |
33 | #include "exec/cpu_ldst.h" | |
34 | #include "exec/translator.h" | |
35 | #include "crisv32-decode.h" | |
36 | #include "qemu/qemu-print.h" | |
37 | ||
38 | #include "exec/helper-gen.h" | |
39 | ||
40 | #include "trace-tcg.h" | |
41 | #include "exec/log.h" | |
42 | ||
43 | ||
44 | #define DISAS_CRIS 0 | |
45 | #if DISAS_CRIS | |
46 | # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__) | |
47 | #else | |
48 | # define LOG_DIS(...) do { } while (0) | |
49 | #endif | |
50 | ||
51 | #define D(x) | |
52 | #define BUG() (gen_BUG(dc, __FILE__, __LINE__)) | |
53 | #define BUG_ON(x) ({if (x) BUG();}) | |
54 | ||
55 | /* is_jmp field values */ | |
56 | #define DISAS_JUMP DISAS_TARGET_0 /* only pc was modified dynamically */ | |
57 | #define DISAS_UPDATE DISAS_TARGET_1 /* cpu state was modified dynamically */ | |
58 | #define DISAS_TB_JUMP DISAS_TARGET_2 /* only pc was modified statically */ | |
59 | #define DISAS_SWI DISAS_TARGET_3 | |
60 | ||
61 | /* Used by the decoder. */ | |
62 | #define EXTRACT_FIELD(src, start, end) \ | |
63 | (((src) >> start) & ((1 << (end - start + 1)) - 1)) | |
64 | ||
65 | #define CC_MASK_NZ 0xc | |
66 | #define CC_MASK_NZV 0xe | |
67 | #define CC_MASK_NZVC 0xf | |
68 | #define CC_MASK_RNZV 0x10e | |
69 | ||
70 | static TCGv cpu_R[16]; | |
71 | static TCGv cpu_PR[16]; | |
72 | static TCGv cc_x; | |
73 | static TCGv cc_src; | |
74 | static TCGv cc_dest; | |
75 | static TCGv cc_result; | |
76 | static TCGv cc_op; | |
77 | static TCGv cc_size; | |
78 | static TCGv cc_mask; | |
79 | ||
80 | static TCGv env_btaken; | |
81 | static TCGv env_btarget; | |
82 | static TCGv env_pc; | |
83 | ||
84 | #include "exec/gen-icount.h" | |
85 | ||
86 | /* This is the state at translation time. */ | |
87 | typedef struct DisasContext { | |
88 | CRISCPU *cpu; | |
89 | target_ulong pc, ppc; | |
90 | ||
91 | /* Decoder. */ | |
92 | unsigned int (*decoder)(CPUCRISState *env, struct DisasContext *dc); | |
93 | uint32_t ir; | |
94 | uint32_t opcode; | |
95 | unsigned int op1; | |
96 | unsigned int op2; | |
97 | unsigned int zsize, zzsize; | |
98 | unsigned int mode; | |
99 | unsigned int postinc; | |
100 | ||
101 | unsigned int size; | |
102 | unsigned int src; | |
103 | unsigned int dst; | |
104 | unsigned int cond; | |
105 | ||
106 | int update_cc; | |
107 | int cc_op; | |
108 | int cc_size; | |
109 | uint32_t cc_mask; | |
110 | ||
111 | int cc_size_uptodate; /* -1 invalid or last written value. */ | |
112 | ||
113 | int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not up-to-date. */ | |
114 | int flags_uptodate; /* Whether or not $ccs is up-to-date. */ | |
115 | int flagx_known; /* Whether or not flags_x has the x flag known at | |
116 | translation time. */ | |
117 | int flags_x; | |
118 | ||
119 | int clear_x; /* Clear x after this insn? */ | |
120 | int clear_prefix; /* Clear prefix after this insn? */ | |
121 | int clear_locked_irq; /* Clear the irq lockout. */ | |
122 | int cpustate_changed; | |
123 | unsigned int tb_flags; /* tb dependent flags. */ | |
124 | int is_jmp; | |
125 | ||
126 | #define JMP_NOJMP 0 | |
127 | #define JMP_DIRECT 1 | |
128 | #define JMP_DIRECT_CC 2 | |
129 | #define JMP_INDIRECT 3 | |
130 | int jmp; /* 0=nojmp, 1=direct, 2=indirect. */ | |
131 | uint32_t jmp_pc; | |
132 | ||
133 | int delayed_branch; | |
134 | ||
135 | struct TranslationBlock *tb; | |
136 | int singlestep_enabled; | |
137 | } DisasContext; | |
138 | ||
139 | static void gen_BUG(DisasContext *dc, const char *file, int line) | |
140 | { | |
141 | cpu_abort(CPU(dc->cpu), "%s:%d pc=%x\n", file, line, dc->pc); | |
142 | } | |
143 | ||
144 | static const char *regnames_v32[] = | |
145 | { | |
146 | "$r0", "$r1", "$r2", "$r3", | |
147 | "$r4", "$r5", "$r6", "$r7", | |
148 | "$r8", "$r9", "$r10", "$r11", | |
149 | "$r12", "$r13", "$sp", "$acr", | |
150 | }; | |
151 | static const char *pregnames_v32[] = | |
152 | { | |
153 | "$bz", "$vr", "$pid", "$srs", | |
154 | "$wz", "$exs", "$eda", "$mof", | |
155 | "$dz", "$ebp", "$erp", "$srp", | |
156 | "$nrp", "$ccs", "$usp", "$spc", | |
157 | }; | |
158 | ||
159 | /* We need this table to handle preg-moves with implicit width. */ | |
160 | static int preg_sizes[] = { | |
161 | 1, /* bz. */ | |
162 | 1, /* vr. */ | |
163 | 4, /* pid. */ | |
164 | 1, /* srs. */ | |
165 | 2, /* wz. */ | |
166 | 4, 4, 4, | |
167 | 4, 4, 4, 4, | |
168 | 4, 4, 4, 4, | |
169 | }; | |
170 | ||
171 | #define t_gen_mov_TN_env(tn, member) \ | |
172 | tcg_gen_ld_tl(tn, cpu_env, offsetof(CPUCRISState, member)) | |
173 | #define t_gen_mov_env_TN(member, tn) \ | |
174 | tcg_gen_st_tl(tn, cpu_env, offsetof(CPUCRISState, member)) | |
175 | ||
176 | static inline void t_gen_mov_TN_preg(TCGv tn, int r) | |
177 | { | |
178 | assert(r >= 0 && r <= 15); | |
179 | if (r == PR_BZ || r == PR_WZ || r == PR_DZ) { | |
180 | tcg_gen_mov_tl(tn, tcg_const_tl(0)); | |
181 | } else if (r == PR_VR) { | |
182 | tcg_gen_mov_tl(tn, tcg_const_tl(32)); | |
183 | } else { | |
184 | tcg_gen_mov_tl(tn, cpu_PR[r]); | |
185 | } | |
186 | } | |
187 | static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn) | |
188 | { | |
189 | assert(r >= 0 && r <= 15); | |
190 | if (r == PR_BZ || r == PR_WZ || r == PR_DZ) { | |
191 | return; | |
192 | } else if (r == PR_SRS) { | |
193 | tcg_gen_andi_tl(cpu_PR[r], tn, 3); | |
194 | } else { | |
195 | if (r == PR_PID) { | |
196 | gen_helper_tlb_flush_pid(cpu_env, tn); | |
197 | } | |
198 | if (dc->tb_flags & S_FLAG && r == PR_SPC) { | |
199 | gen_helper_spc_write(cpu_env, tn); | |
200 | } else if (r == PR_CCS) { | |
201 | dc->cpustate_changed = 1; | |
202 | } | |
203 | tcg_gen_mov_tl(cpu_PR[r], tn); | |
204 | } | |
205 | } | |
206 | ||
207 | /* Sign extend at translation time. */ | |
208 | static int sign_extend(unsigned int val, unsigned int width) | |
209 | { | |
210 | int sval; | |
211 | ||
212 | /* LSL. */ | |
213 | val <<= 31 - width; | |
214 | sval = val; | |
215 | /* ASR. */ | |
216 | sval >>= 31 - width; | |
217 | return sval; | |
218 | } | |
219 | ||
220 | static int cris_fetch(CPUCRISState *env, DisasContext *dc, uint32_t addr, | |
221 | unsigned int size, unsigned int sign) | |
222 | { | |
223 | int r; | |
224 | ||
225 | switch (size) { | |
226 | case 4: | |
227 | { | |
228 | r = cpu_ldl_code(env, addr); | |
229 | break; | |
230 | } | |
231 | case 2: | |
232 | { | |
233 | if (sign) { | |
234 | r = cpu_ldsw_code(env, addr); | |
235 | } else { | |
236 | r = cpu_lduw_code(env, addr); | |
237 | } | |
238 | break; | |
239 | } | |
240 | case 1: | |
241 | { | |
242 | if (sign) { | |
243 | r = cpu_ldsb_code(env, addr); | |
244 | } else { | |
245 | r = cpu_ldub_code(env, addr); | |
246 | } | |
247 | break; | |
248 | } | |
249 | default: | |
250 | cpu_abort(CPU(dc->cpu), "Invalid fetch size %d\n", size); | |
251 | break; | |
252 | } | |
253 | return r; | |
254 | } | |
255 | ||
256 | static void cris_lock_irq(DisasContext *dc) | |
257 | { | |
258 | dc->clear_locked_irq = 0; | |
259 | t_gen_mov_env_TN(locked_irq, tcg_const_tl(1)); | |
260 | } | |
261 | ||
262 | static inline void t_gen_raise_exception(uint32_t index) | |
263 | { | |
264 | TCGv_i32 tmp = tcg_const_i32(index); | |
265 | gen_helper_raise_exception(cpu_env, tmp); | |
266 | tcg_temp_free_i32(tmp); | |
267 | } | |
268 | ||
269 | static void t_gen_lsl(TCGv d, TCGv a, TCGv b) | |
270 | { | |
271 | TCGv t0, t_31; | |
272 | ||
273 | t0 = tcg_temp_new(); | |
274 | t_31 = tcg_const_tl(31); | |
275 | tcg_gen_shl_tl(d, a, b); | |
276 | ||
277 | tcg_gen_sub_tl(t0, t_31, b); | |
278 | tcg_gen_sar_tl(t0, t0, t_31); | |
279 | tcg_gen_and_tl(t0, t0, d); | |
280 | tcg_gen_xor_tl(d, d, t0); | |
281 | tcg_temp_free(t0); | |
282 | tcg_temp_free(t_31); | |
283 | } | |
284 | ||
285 | static void t_gen_lsr(TCGv d, TCGv a, TCGv b) | |
286 | { | |
287 | TCGv t0, t_31; | |
288 | ||
289 | t0 = tcg_temp_new(); | |
290 | t_31 = tcg_temp_new(); | |
291 | tcg_gen_shr_tl(d, a, b); | |
292 | ||
293 | tcg_gen_movi_tl(t_31, 31); | |
294 | tcg_gen_sub_tl(t0, t_31, b); | |
295 | tcg_gen_sar_tl(t0, t0, t_31); | |
296 | tcg_gen_and_tl(t0, t0, d); | |
297 | tcg_gen_xor_tl(d, d, t0); | |
298 | tcg_temp_free(t0); | |
299 | tcg_temp_free(t_31); | |
300 | } | |
301 | ||
302 | static void t_gen_asr(TCGv d, TCGv a, TCGv b) | |
303 | { | |
304 | TCGv t0, t_31; | |
305 | ||
306 | t0 = tcg_temp_new(); | |
307 | t_31 = tcg_temp_new(); | |
308 | tcg_gen_sar_tl(d, a, b); | |
309 | ||
310 | tcg_gen_movi_tl(t_31, 31); | |
311 | tcg_gen_sub_tl(t0, t_31, b); | |
312 | tcg_gen_sar_tl(t0, t0, t_31); | |
313 | tcg_gen_or_tl(d, d, t0); | |
314 | tcg_temp_free(t0); | |
315 | tcg_temp_free(t_31); | |
316 | } | |
317 | ||
318 | static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b) | |
319 | { | |
320 | TCGv t = tcg_temp_new(); | |
321 | ||
322 | /* | |
323 | * d <<= 1 | |
324 | * if (d >= s) | |
325 | * d -= s; | |
326 | */ | |
327 | tcg_gen_shli_tl(d, a, 1); | |
328 | tcg_gen_sub_tl(t, d, b); | |
329 | tcg_gen_movcond_tl(TCG_COND_GEU, d, d, b, t, d); | |
330 | tcg_temp_free(t); | |
331 | } | |
332 | ||
333 | static void t_gen_cris_mstep(TCGv d, TCGv a, TCGv b, TCGv ccs) | |
334 | { | |
335 | TCGv t; | |
336 | ||
337 | /* | |
338 | * d <<= 1 | |
339 | * if (n) | |
340 | * d += s; | |
341 | */ | |
342 | t = tcg_temp_new(); | |
343 | tcg_gen_shli_tl(d, a, 1); | |
344 | tcg_gen_shli_tl(t, ccs, 31 - 3); | |
345 | tcg_gen_sari_tl(t, t, 31); | |
346 | tcg_gen_and_tl(t, t, b); | |
347 | tcg_gen_add_tl(d, d, t); | |
348 | tcg_temp_free(t); | |
349 | } | |
350 | ||
351 | /* Extended arithmetics on CRIS. */ | |
352 | static inline void t_gen_add_flag(TCGv d, int flag) | |
353 | { | |
354 | TCGv c; | |
355 | ||
356 | c = tcg_temp_new(); | |
357 | t_gen_mov_TN_preg(c, PR_CCS); | |
358 | /* Propagate carry into d. */ | |
359 | tcg_gen_andi_tl(c, c, 1 << flag); | |
360 | if (flag) { | |
361 | tcg_gen_shri_tl(c, c, flag); | |
362 | } | |
363 | tcg_gen_add_tl(d, d, c); | |
364 | tcg_temp_free(c); | |
365 | } | |
366 | ||
367 | static inline void t_gen_addx_carry(DisasContext *dc, TCGv d) | |
368 | { | |
369 | if (dc->flagx_known) { | |
370 | if (dc->flags_x) { | |
371 | TCGv c; | |
372 | ||
373 | c = tcg_temp_new(); | |
374 | t_gen_mov_TN_preg(c, PR_CCS); | |
375 | /* C flag is already at bit 0. */ | |
376 | tcg_gen_andi_tl(c, c, C_FLAG); | |
377 | tcg_gen_add_tl(d, d, c); | |
378 | tcg_temp_free(c); | |
379 | } | |
380 | } else { | |
381 | TCGv x, c; | |
382 | ||
383 | x = tcg_temp_new(); | |
384 | c = tcg_temp_new(); | |
385 | t_gen_mov_TN_preg(x, PR_CCS); | |
386 | tcg_gen_mov_tl(c, x); | |
387 | ||
388 | /* Propagate carry into d if X is set. Branch free. */ | |
389 | tcg_gen_andi_tl(c, c, C_FLAG); | |
390 | tcg_gen_andi_tl(x, x, X_FLAG); | |
391 | tcg_gen_shri_tl(x, x, 4); | |
392 | ||
393 | tcg_gen_and_tl(x, x, c); | |
394 | tcg_gen_add_tl(d, d, x); | |
395 | tcg_temp_free(x); | |
396 | tcg_temp_free(c); | |
397 | } | |
398 | } | |
399 | ||
400 | static inline void t_gen_subx_carry(DisasContext *dc, TCGv d) | |
401 | { | |
402 | if (dc->flagx_known) { | |
403 | if (dc->flags_x) { | |
404 | TCGv c; | |
405 | ||
406 | c = tcg_temp_new(); | |
407 | t_gen_mov_TN_preg(c, PR_CCS); | |
408 | /* C flag is already at bit 0. */ | |
409 | tcg_gen_andi_tl(c, c, C_FLAG); | |
410 | tcg_gen_sub_tl(d, d, c); | |
411 | tcg_temp_free(c); | |
412 | } | |
413 | } else { | |
414 | TCGv x, c; | |
415 | ||
416 | x = tcg_temp_new(); | |
417 | c = tcg_temp_new(); | |
418 | t_gen_mov_TN_preg(x, PR_CCS); | |
419 | tcg_gen_mov_tl(c, x); | |
420 | ||
421 | /* Propagate carry into d if X is set. Branch free. */ | |
422 | tcg_gen_andi_tl(c, c, C_FLAG); | |
423 | tcg_gen_andi_tl(x, x, X_FLAG); | |
424 | tcg_gen_shri_tl(x, x, 4); | |
425 | ||
426 | tcg_gen_and_tl(x, x, c); | |
427 | tcg_gen_sub_tl(d, d, x); | |
428 | tcg_temp_free(x); | |
429 | tcg_temp_free(c); | |
430 | } | |
431 | } | |
432 | ||
433 | /* Swap the two bytes within each half word of the s operand. | |
434 | T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */ | |
435 | static inline void t_gen_swapb(TCGv d, TCGv s) | |
436 | { | |
437 | TCGv t, org_s; | |
438 | ||
439 | t = tcg_temp_new(); | |
440 | org_s = tcg_temp_new(); | |
441 | ||
442 | /* d and s may refer to the same object. */ | |
443 | tcg_gen_mov_tl(org_s, s); | |
444 | tcg_gen_shli_tl(t, org_s, 8); | |
445 | tcg_gen_andi_tl(d, t, 0xff00ff00); | |
446 | tcg_gen_shri_tl(t, org_s, 8); | |
447 | tcg_gen_andi_tl(t, t, 0x00ff00ff); | |
448 | tcg_gen_or_tl(d, d, t); | |
449 | tcg_temp_free(t); | |
450 | tcg_temp_free(org_s); | |
451 | } | |
452 | ||
453 | /* Swap the halfwords of the s operand. */ | |
454 | static inline void t_gen_swapw(TCGv d, TCGv s) | |
455 | { | |
456 | TCGv t; | |
457 | /* d and s refer the same object. */ | |
458 | t = tcg_temp_new(); | |
459 | tcg_gen_mov_tl(t, s); | |
460 | tcg_gen_shli_tl(d, t, 16); | |
461 | tcg_gen_shri_tl(t, t, 16); | |
462 | tcg_gen_or_tl(d, d, t); | |
463 | tcg_temp_free(t); | |
464 | } | |
465 | ||
466 | /* Reverse the within each byte. | |
467 | T0 = (((T0 << 7) & 0x80808080) | | |
468 | ((T0 << 5) & 0x40404040) | | |
469 | ((T0 << 3) & 0x20202020) | | |
470 | ((T0 << 1) & 0x10101010) | | |
471 | ((T0 >> 1) & 0x08080808) | | |
472 | ((T0 >> 3) & 0x04040404) | | |
473 | ((T0 >> 5) & 0x02020202) | | |
474 | ((T0 >> 7) & 0x01010101)); | |
475 | */ | |
476 | static inline void t_gen_swapr(TCGv d, TCGv s) | |
477 | { | |
478 | struct { | |
479 | int shift; /* LSL when positive, LSR when negative. */ | |
480 | uint32_t mask; | |
481 | } bitrev[] = { | |
482 | {7, 0x80808080}, | |
483 | {5, 0x40404040}, | |
484 | {3, 0x20202020}, | |
485 | {1, 0x10101010}, | |
486 | {-1, 0x08080808}, | |
487 | {-3, 0x04040404}, | |
488 | {-5, 0x02020202}, | |
489 | {-7, 0x01010101} | |
490 | }; | |
491 | int i; | |
492 | TCGv t, org_s; | |
493 | ||
494 | /* d and s refer the same object. */ | |
495 | t = tcg_temp_new(); | |
496 | org_s = tcg_temp_new(); | |
497 | tcg_gen_mov_tl(org_s, s); | |
498 | ||
499 | tcg_gen_shli_tl(t, org_s, bitrev[0].shift); | |
500 | tcg_gen_andi_tl(d, t, bitrev[0].mask); | |
501 | for (i = 1; i < ARRAY_SIZE(bitrev); i++) { | |
502 | if (bitrev[i].shift >= 0) { | |
503 | tcg_gen_shli_tl(t, org_s, bitrev[i].shift); | |
504 | } else { | |
505 | tcg_gen_shri_tl(t, org_s, -bitrev[i].shift); | |
506 | } | |
507 | tcg_gen_andi_tl(t, t, bitrev[i].mask); | |
508 | tcg_gen_or_tl(d, d, t); | |
509 | } | |
510 | tcg_temp_free(t); | |
511 | tcg_temp_free(org_s); | |
512 | } | |
513 | ||
514 | static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false) | |
515 | { | |
516 | TCGLabel *l1 = gen_new_label(); | |
517 | ||
518 | /* Conditional jmp. */ | |
519 | tcg_gen_mov_tl(env_pc, pc_false); | |
520 | tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1); | |
521 | tcg_gen_mov_tl(env_pc, pc_true); | |
522 | gen_set_label(l1); | |
523 | } | |
524 | ||
525 | static inline bool use_goto_tb(DisasContext *dc, target_ulong dest) | |
526 | { | |
527 | #ifndef CONFIG_USER_ONLY | |
528 | return (dc->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || | |
529 | (dc->ppc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK); | |
530 | #else | |
531 | return true; | |
532 | #endif | |
533 | } | |
534 | ||
535 | static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) | |
536 | { | |
537 | if (use_goto_tb(dc, dest)) { | |
538 | tcg_gen_goto_tb(n); | |
539 | tcg_gen_movi_tl(env_pc, dest); | |
540 | tcg_gen_exit_tb(dc->tb, n); | |
541 | } else { | |
542 | tcg_gen_movi_tl(env_pc, dest); | |
543 | tcg_gen_exit_tb(NULL, 0); | |
544 | } | |
545 | } | |
546 | ||
547 | static inline void cris_clear_x_flag(DisasContext *dc) | |
548 | { | |
549 | if (dc->flagx_known && dc->flags_x) { | |
550 | dc->flags_uptodate = 0; | |
551 | } | |
552 | ||
553 | dc->flagx_known = 1; | |
554 | dc->flags_x = 0; | |
555 | } | |
556 | ||
557 | static void cris_flush_cc_state(DisasContext *dc) | |
558 | { | |
559 | if (dc->cc_size_uptodate != dc->cc_size) { | |
560 | tcg_gen_movi_tl(cc_size, dc->cc_size); | |
561 | dc->cc_size_uptodate = dc->cc_size; | |
562 | } | |
563 | tcg_gen_movi_tl(cc_op, dc->cc_op); | |
564 | tcg_gen_movi_tl(cc_mask, dc->cc_mask); | |
565 | } | |
566 | ||
567 | static void cris_evaluate_flags(DisasContext *dc) | |
568 | { | |
569 | if (dc->flags_uptodate) { | |
570 | return; | |
571 | } | |
572 | ||
573 | cris_flush_cc_state(dc); | |
574 | ||
575 | switch (dc->cc_op) { | |
576 | case CC_OP_MCP: | |
577 | gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], cpu_env, | |
578 | cpu_PR[PR_CCS], cc_src, | |
579 | cc_dest, cc_result); | |
580 | break; | |
581 | case CC_OP_MULS: | |
582 | gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], cpu_env, | |
583 | cpu_PR[PR_CCS], cc_result, | |
584 | cpu_PR[PR_MOF]); | |
585 | break; | |
586 | case CC_OP_MULU: | |
587 | gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], cpu_env, | |
588 | cpu_PR[PR_CCS], cc_result, | |
589 | cpu_PR[PR_MOF]); | |
590 | break; | |
591 | case CC_OP_MOVE: | |
592 | case CC_OP_AND: | |
593 | case CC_OP_OR: | |
594 | case CC_OP_XOR: | |
595 | case CC_OP_ASR: | |
596 | case CC_OP_LSR: | |
597 | case CC_OP_LSL: | |
598 | switch (dc->cc_size) { | |
599 | case 4: | |
600 | gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS], | |
601 | cpu_env, cpu_PR[PR_CCS], cc_result); | |
602 | break; | |
603 | case 2: | |
604 | gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS], | |
605 | cpu_env, cpu_PR[PR_CCS], cc_result); | |
606 | break; | |
607 | default: | |
608 | gen_helper_evaluate_flags(cpu_env); | |
609 | break; | |
610 | } | |
611 | break; | |
612 | case CC_OP_FLAGS: | |
613 | /* live. */ | |
614 | break; | |
615 | case CC_OP_SUB: | |
616 | case CC_OP_CMP: | |
617 | if (dc->cc_size == 4) { | |
618 | gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], cpu_env, | |
619 | cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); | |
620 | } else { | |
621 | gen_helper_evaluate_flags(cpu_env); | |
622 | } | |
623 | ||
624 | break; | |
625 | default: | |
626 | switch (dc->cc_size) { | |
627 | case 4: | |
628 | gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], cpu_env, | |
629 | cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); | |
630 | break; | |
631 | default: | |
632 | gen_helper_evaluate_flags(cpu_env); | |
633 | break; | |
634 | } | |
635 | break; | |
636 | } | |
637 | ||
638 | if (dc->flagx_known) { | |
639 | if (dc->flags_x) { | |
640 | tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], X_FLAG); | |
641 | } else if (dc->cc_op == CC_OP_FLAGS) { | |
642 | tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~X_FLAG); | |
643 | } | |
644 | } | |
645 | dc->flags_uptodate = 1; | |
646 | } | |
647 | ||
648 | static void cris_cc_mask(DisasContext *dc, unsigned int mask) | |
649 | { | |
650 | uint32_t ovl; | |
651 | ||
652 | if (!mask) { | |
653 | dc->update_cc = 0; | |
654 | return; | |
655 | } | |
656 | ||
657 | /* Check if we need to evaluate the condition codes due to | |
658 | CC overlaying. */ | |
659 | ovl = (dc->cc_mask ^ mask) & ~mask; | |
660 | if (ovl) { | |
661 | /* TODO: optimize this case. It trigs all the time. */ | |
662 | cris_evaluate_flags(dc); | |
663 | } | |
664 | dc->cc_mask = mask; | |
665 | dc->update_cc = 1; | |
666 | } | |
667 | ||
668 | static void cris_update_cc_op(DisasContext *dc, int op, int size) | |
669 | { | |
670 | dc->cc_op = op; | |
671 | dc->cc_size = size; | |
672 | dc->flags_uptodate = 0; | |
673 | } | |
674 | ||
675 | static inline void cris_update_cc_x(DisasContext *dc) | |
676 | { | |
677 | /* Save the x flag state at the time of the cc snapshot. */ | |
678 | if (dc->flagx_known) { | |
679 | if (dc->cc_x_uptodate == (2 | dc->flags_x)) { | |
680 | return; | |
681 | } | |
682 | tcg_gen_movi_tl(cc_x, dc->flags_x); | |
683 | dc->cc_x_uptodate = 2 | dc->flags_x; | |
684 | } else { | |
685 | tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG); | |
686 | dc->cc_x_uptodate = 1; | |
687 | } | |
688 | } | |
689 | ||
690 | /* Update cc prior to executing ALU op. Needs source operands untouched. */ | |
691 | static void cris_pre_alu_update_cc(DisasContext *dc, int op, | |
692 | TCGv dst, TCGv src, int size) | |
693 | { | |
694 | if (dc->update_cc) { | |
695 | cris_update_cc_op(dc, op, size); | |
696 | tcg_gen_mov_tl(cc_src, src); | |
697 | ||
698 | if (op != CC_OP_MOVE | |
699 | && op != CC_OP_AND | |
700 | && op != CC_OP_OR | |
701 | && op != CC_OP_XOR | |
702 | && op != CC_OP_ASR | |
703 | && op != CC_OP_LSR | |
704 | && op != CC_OP_LSL) { | |
705 | tcg_gen_mov_tl(cc_dest, dst); | |
706 | } | |
707 | ||
708 | cris_update_cc_x(dc); | |
709 | } | |
710 | } | |
711 | ||
712 | /* Update cc after executing ALU op. needs the result. */ | |
713 | static inline void cris_update_result(DisasContext *dc, TCGv res) | |
714 | { | |
715 | if (dc->update_cc) { | |
716 | tcg_gen_mov_tl(cc_result, res); | |
717 | } | |
718 | } | |
719 | ||
720 | /* Returns one if the write back stage should execute. */ | |
721 | static void cris_alu_op_exec(DisasContext *dc, int op, | |
722 | TCGv dst, TCGv a, TCGv b, int size) | |
723 | { | |
724 | /* Emit the ALU insns. */ | |
725 | switch (op) { | |
726 | case CC_OP_ADD: | |
727 | tcg_gen_add_tl(dst, a, b); | |
728 | /* Extended arithmetics. */ | |
729 | t_gen_addx_carry(dc, dst); | |
730 | break; | |
731 | case CC_OP_ADDC: | |
732 | tcg_gen_add_tl(dst, a, b); | |
733 | t_gen_add_flag(dst, 0); /* C_FLAG. */ | |
734 | break; | |
735 | case CC_OP_MCP: | |
736 | tcg_gen_add_tl(dst, a, b); | |
737 | t_gen_add_flag(dst, 8); /* R_FLAG. */ | |
738 | break; | |
739 | case CC_OP_SUB: | |
740 | tcg_gen_sub_tl(dst, a, b); | |
741 | /* Extended arithmetics. */ | |
742 | t_gen_subx_carry(dc, dst); | |
743 | break; | |
744 | case CC_OP_MOVE: | |
745 | tcg_gen_mov_tl(dst, b); | |
746 | break; | |
747 | case CC_OP_OR: | |
748 | tcg_gen_or_tl(dst, a, b); | |
749 | break; | |
750 | case CC_OP_AND: | |
751 | tcg_gen_and_tl(dst, a, b); | |
752 | break; | |
753 | case CC_OP_XOR: | |
754 | tcg_gen_xor_tl(dst, a, b); | |
755 | break; | |
756 | case CC_OP_LSL: | |
757 | t_gen_lsl(dst, a, b); | |
758 | break; | |
759 | case CC_OP_LSR: | |
760 | t_gen_lsr(dst, a, b); | |
761 | break; | |
762 | case CC_OP_ASR: | |
763 | t_gen_asr(dst, a, b); | |
764 | break; | |
765 | case CC_OP_NEG: | |
766 | tcg_gen_neg_tl(dst, b); | |
767 | /* Extended arithmetics. */ | |
768 | t_gen_subx_carry(dc, dst); | |
769 | break; | |
770 | case CC_OP_LZ: | |
771 | tcg_gen_clzi_tl(dst, b, TARGET_LONG_BITS); | |
772 | break; | |
773 | case CC_OP_MULS: | |
774 | tcg_gen_muls2_tl(dst, cpu_PR[PR_MOF], a, b); | |
775 | break; | |
776 | case CC_OP_MULU: | |
777 | tcg_gen_mulu2_tl(dst, cpu_PR[PR_MOF], a, b); | |
778 | break; | |
779 | case CC_OP_DSTEP: | |
780 | t_gen_cris_dstep(dst, a, b); | |
781 | break; | |
782 | case CC_OP_MSTEP: | |
783 | t_gen_cris_mstep(dst, a, b, cpu_PR[PR_CCS]); | |
784 | break; | |
785 | case CC_OP_BOUND: | |
786 | tcg_gen_movcond_tl(TCG_COND_LEU, dst, a, b, a, b); | |
787 | break; | |
788 | case CC_OP_CMP: | |
789 | tcg_gen_sub_tl(dst, a, b); | |
790 | /* Extended arithmetics. */ | |
791 | t_gen_subx_carry(dc, dst); | |
792 | break; | |
793 | default: | |
794 | qemu_log_mask(LOG_GUEST_ERROR, "illegal ALU op.\n"); | |
795 | BUG(); | |
796 | break; | |
797 | } | |
798 | ||
799 | if (size == 1) { | |
800 | tcg_gen_andi_tl(dst, dst, 0xff); | |
801 | } else if (size == 2) { | |
802 | tcg_gen_andi_tl(dst, dst, 0xffff); | |
803 | } | |
804 | } | |
805 | ||
806 | static void cris_alu(DisasContext *dc, int op, | |
807 | TCGv d, TCGv op_a, TCGv op_b, int size) | |
808 | { | |
809 | TCGv tmp; | |
810 | int writeback; | |
811 | ||
812 | writeback = 1; | |
813 | ||
814 | if (op == CC_OP_CMP) { | |
815 | tmp = tcg_temp_new(); | |
816 | writeback = 0; | |
817 | } else if (size == 4) { | |
818 | tmp = d; | |
819 | writeback = 0; | |
820 | } else { | |
821 | tmp = tcg_temp_new(); | |
822 | } | |
823 | ||
824 | ||
825 | cris_pre_alu_update_cc(dc, op, op_a, op_b, size); | |
826 | cris_alu_op_exec(dc, op, tmp, op_a, op_b, size); | |
827 | cris_update_result(dc, tmp); | |
828 | ||
829 | /* Writeback. */ | |
830 | if (writeback) { | |
831 | if (size == 1) { | |
832 | tcg_gen_andi_tl(d, d, ~0xff); | |
833 | } else { | |
834 | tcg_gen_andi_tl(d, d, ~0xffff); | |
835 | } | |
836 | tcg_gen_or_tl(d, d, tmp); | |
837 | } | |
838 | if (tmp != d) { | |
839 | tcg_temp_free(tmp); | |
840 | } | |
841 | } | |
842 | ||
843 | static int arith_cc(DisasContext *dc) | |
844 | { | |
845 | if (dc->update_cc) { | |
846 | switch (dc->cc_op) { | |
847 | case CC_OP_ADDC: return 1; | |
848 | case CC_OP_ADD: return 1; | |
849 | case CC_OP_SUB: return 1; | |
850 | case CC_OP_DSTEP: return 1; | |
851 | case CC_OP_LSL: return 1; | |
852 | case CC_OP_LSR: return 1; | |
853 | case CC_OP_ASR: return 1; | |
854 | case CC_OP_CMP: return 1; | |
855 | case CC_OP_NEG: return 1; | |
856 | case CC_OP_OR: return 1; | |
857 | case CC_OP_AND: return 1; | |
858 | case CC_OP_XOR: return 1; | |
859 | case CC_OP_MULU: return 1; | |
860 | case CC_OP_MULS: return 1; | |
861 | default: | |
862 | return 0; | |
863 | } | |
864 | } | |
865 | return 0; | |
866 | } | |
867 | ||
868 | static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond) | |
869 | { | |
870 | int arith_opt, move_opt; | |
871 | ||
872 | /* TODO: optimize more condition codes. */ | |
873 | ||
874 | /* | |
875 | * If the flags are live, we've gotta look into the bits of CCS. | |
876 | * Otherwise, if we just did an arithmetic operation we try to | |
877 | * evaluate the condition code faster. | |
878 | * | |
879 | * When this function is done, T0 should be non-zero if the condition | |
880 | * code is true. | |
881 | */ | |
882 | arith_opt = arith_cc(dc) && !dc->flags_uptodate; | |
883 | move_opt = (dc->cc_op == CC_OP_MOVE); | |
884 | switch (cond) { | |
885 | case CC_EQ: | |
886 | if ((arith_opt || move_opt) | |
887 | && dc->cc_x_uptodate != (2 | X_FLAG)) { | |
888 | tcg_gen_setcond_tl(TCG_COND_EQ, cc, | |
889 | cc_result, tcg_const_tl(0)); | |
890 | } else { | |
891 | cris_evaluate_flags(dc); | |
892 | tcg_gen_andi_tl(cc, | |
893 | cpu_PR[PR_CCS], Z_FLAG); | |
894 | } | |
895 | break; | |
896 | case CC_NE: | |
897 | if ((arith_opt || move_opt) | |
898 | && dc->cc_x_uptodate != (2 | X_FLAG)) { | |
899 | tcg_gen_mov_tl(cc, cc_result); | |
900 | } else { | |
901 | cris_evaluate_flags(dc); | |
902 | tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], | |
903 | Z_FLAG); | |
904 | tcg_gen_andi_tl(cc, cc, Z_FLAG); | |
905 | } | |
906 | break; | |
907 | case CC_CS: | |
908 | cris_evaluate_flags(dc); | |
909 | tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG); | |
910 | break; | |
911 | case CC_CC: | |
912 | cris_evaluate_flags(dc); | |
913 | tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG); | |
914 | tcg_gen_andi_tl(cc, cc, C_FLAG); | |
915 | break; | |
916 | case CC_VS: | |
917 | cris_evaluate_flags(dc); | |
918 | tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG); | |
919 | break; | |
920 | case CC_VC: | |
921 | cris_evaluate_flags(dc); | |
922 | tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], | |
923 | V_FLAG); | |
924 | tcg_gen_andi_tl(cc, cc, V_FLAG); | |
925 | break; | |
926 | case CC_PL: | |
927 | if (arith_opt || move_opt) { | |
928 | int bits = 31; | |
929 | ||
930 | if (dc->cc_size == 1) { | |
931 | bits = 7; | |
932 | } else if (dc->cc_size == 2) { | |
933 | bits = 15; | |
934 | } | |
935 | ||
936 | tcg_gen_shri_tl(cc, cc_result, bits); | |
937 | tcg_gen_xori_tl(cc, cc, 1); | |
938 | } else { | |
939 | cris_evaluate_flags(dc); | |
940 | tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], | |
941 | N_FLAG); | |
942 | tcg_gen_andi_tl(cc, cc, N_FLAG); | |
943 | } | |
944 | break; | |
945 | case CC_MI: | |
946 | if (arith_opt || move_opt) { | |
947 | int bits = 31; | |
948 | ||
949 | if (dc->cc_size == 1) { | |
950 | bits = 7; | |
951 | } else if (dc->cc_size == 2) { | |
952 | bits = 15; | |
953 | } | |
954 | ||
955 | tcg_gen_shri_tl(cc, cc_result, bits); | |
956 | tcg_gen_andi_tl(cc, cc, 1); | |
957 | } else { | |
958 | cris_evaluate_flags(dc); | |
959 | tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], | |
960 | N_FLAG); | |
961 | } | |
962 | break; | |
963 | case CC_LS: | |
964 | cris_evaluate_flags(dc); | |
965 | tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], | |
966 | C_FLAG | Z_FLAG); | |
967 | break; | |
968 | case CC_HI: | |
969 | cris_evaluate_flags(dc); | |
970 | { | |
971 | TCGv tmp; | |
972 | ||
973 | tmp = tcg_temp_new(); | |
974 | tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS], | |
975 | C_FLAG | Z_FLAG); | |
976 | /* Overlay the C flag on top of the Z. */ | |
977 | tcg_gen_shli_tl(cc, tmp, 2); | |
978 | tcg_gen_and_tl(cc, tmp, cc); | |
979 | tcg_gen_andi_tl(cc, cc, Z_FLAG); | |
980 | ||
981 | tcg_temp_free(tmp); | |
982 | } | |
983 | break; | |
984 | case CC_GE: | |
985 | cris_evaluate_flags(dc); | |
986 | /* Overlay the V flag on top of the N. */ | |
987 | tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2); | |
988 | tcg_gen_xor_tl(cc, | |
989 | cpu_PR[PR_CCS], cc); | |
990 | tcg_gen_andi_tl(cc, cc, N_FLAG); | |
991 | tcg_gen_xori_tl(cc, cc, N_FLAG); | |
992 | break; | |
993 | case CC_LT: | |
994 | cris_evaluate_flags(dc); | |
995 | /* Overlay the V flag on top of the N. */ | |
996 | tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2); | |
997 | tcg_gen_xor_tl(cc, | |
998 | cpu_PR[PR_CCS], cc); | |
999 | tcg_gen_andi_tl(cc, cc, N_FLAG); | |
1000 | break; | |
1001 | case CC_GT: | |
1002 | cris_evaluate_flags(dc); | |
1003 | { | |
1004 | TCGv n, z; | |
1005 | ||
1006 | n = tcg_temp_new(); | |
1007 | z = tcg_temp_new(); | |
1008 | ||
1009 | /* To avoid a shift we overlay everything on | |
1010 | the V flag. */ | |
1011 | tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2); | |
1012 | tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1); | |
1013 | /* invert Z. */ | |
1014 | tcg_gen_xori_tl(z, z, 2); | |
1015 | ||
1016 | tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); | |
1017 | tcg_gen_xori_tl(n, n, 2); | |
1018 | tcg_gen_and_tl(cc, z, n); | |
1019 | tcg_gen_andi_tl(cc, cc, 2); | |
1020 | ||
1021 | tcg_temp_free(n); | |
1022 | tcg_temp_free(z); | |
1023 | } | |
1024 | break; | |
1025 | case CC_LE: | |
1026 | cris_evaluate_flags(dc); | |
1027 | { | |
1028 | TCGv n, z; | |
1029 | ||
1030 | n = tcg_temp_new(); | |
1031 | z = tcg_temp_new(); | |
1032 | ||
1033 | /* To avoid a shift we overlay everything on | |
1034 | the V flag. */ | |
1035 | tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2); | |
1036 | tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1); | |
1037 | ||
1038 | tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); | |
1039 | tcg_gen_or_tl(cc, z, n); | |
1040 | tcg_gen_andi_tl(cc, cc, 2); | |
1041 | ||
1042 | tcg_temp_free(n); | |
1043 | tcg_temp_free(z); | |
1044 | } | |
1045 | break; | |
1046 | case CC_P: | |
1047 | cris_evaluate_flags(dc); | |
1048 | tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG); | |
1049 | break; | |
1050 | case CC_A: | |
1051 | tcg_gen_movi_tl(cc, 1); | |
1052 | break; | |
1053 | default: | |
1054 | BUG(); | |
1055 | break; | |
1056 | }; | |
1057 | } | |
1058 | ||
1059 | static void cris_store_direct_jmp(DisasContext *dc) | |
1060 | { | |
1061 | /* Store the direct jmp state into the cpu-state. */ | |
1062 | if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) { | |
1063 | if (dc->jmp == JMP_DIRECT) { | |
1064 | tcg_gen_movi_tl(env_btaken, 1); | |
1065 | } | |
1066 | tcg_gen_movi_tl(env_btarget, dc->jmp_pc); | |
1067 | dc->jmp = JMP_INDIRECT; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | static void cris_prepare_cc_branch (DisasContext *dc, | |
1072 | int offset, int cond) | |
1073 | { | |
1074 | /* This helps us re-schedule the micro-code to insns in delay-slots | |
1075 | before the actual jump. */ | |
1076 | dc->delayed_branch = 2; | |
1077 | dc->jmp = JMP_DIRECT_CC; | |
1078 | dc->jmp_pc = dc->pc + offset; | |
1079 | ||
1080 | gen_tst_cc(dc, env_btaken, cond); | |
1081 | tcg_gen_movi_tl(env_btarget, dc->jmp_pc); | |
1082 | } | |
1083 | ||
1084 | ||
1085 | /* jumps, when the dest is in a live reg for example. Direct should be set | |
1086 | when the dest addr is constant to allow tb chaining. */ | |
1087 | static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type) | |
1088 | { | |
1089 | /* This helps us re-schedule the micro-code to insns in delay-slots | |
1090 | before the actual jump. */ | |
1091 | dc->delayed_branch = 2; | |
1092 | dc->jmp = type; | |
1093 | if (type == JMP_INDIRECT) { | |
1094 | tcg_gen_movi_tl(env_btaken, 1); | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr) | |
1099 | { | |
1100 | int mem_index = cpu_mmu_index(&dc->cpu->env, false); | |
1101 | ||
1102 | /* If we get a fault on a delayslot we must keep the jmp state in | |
1103 | the cpu-state to be able to re-execute the jmp. */ | |
1104 | if (dc->delayed_branch == 1) { | |
1105 | cris_store_direct_jmp(dc); | |
1106 | } | |
1107 | ||
1108 | tcg_gen_qemu_ld_i64(dst, addr, mem_index, MO_TEQ); | |
1109 | } | |
1110 | ||
1111 | static void gen_load(DisasContext *dc, TCGv dst, TCGv addr, | |
1112 | unsigned int size, int sign) | |
1113 | { | |
1114 | int mem_index = cpu_mmu_index(&dc->cpu->env, false); | |
1115 | ||
1116 | /* If we get a fault on a delayslot we must keep the jmp state in | |
1117 | the cpu-state to be able to re-execute the jmp. */ | |
1118 | if (dc->delayed_branch == 1) { | |
1119 | cris_store_direct_jmp(dc); | |
1120 | } | |
1121 | ||
1122 | tcg_gen_qemu_ld_tl(dst, addr, mem_index, | |
1123 | MO_TE + ctz32(size) + (sign ? MO_SIGN : 0)); | |
1124 | } | |
1125 | ||
1126 | static void gen_store (DisasContext *dc, TCGv addr, TCGv val, | |
1127 | unsigned int size) | |
1128 | { | |
1129 | int mem_index = cpu_mmu_index(&dc->cpu->env, false); | |
1130 | ||
1131 | /* If we get a fault on a delayslot we must keep the jmp state in | |
1132 | the cpu-state to be able to re-execute the jmp. */ | |
1133 | if (dc->delayed_branch == 1) { | |
1134 | cris_store_direct_jmp(dc); | |
1135 | } | |
1136 | ||
1137 | ||
1138 | /* Conditional writes. We only support the kind were X and P are known | |
1139 | at translation time. */ | |
1140 | if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) { | |
1141 | dc->postinc = 0; | |
1142 | cris_evaluate_flags(dc); | |
1143 | tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG); | |
1144 | return; | |
1145 | } | |
1146 | ||
1147 | tcg_gen_qemu_st_tl(val, addr, mem_index, MO_TE + ctz32(size)); | |
1148 | ||
1149 | if (dc->flagx_known && dc->flags_x) { | |
1150 | cris_evaluate_flags(dc); | |
1151 | tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG); | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | static inline void t_gen_sext(TCGv d, TCGv s, int size) | |
1156 | { | |
1157 | if (size == 1) { | |
1158 | tcg_gen_ext8s_i32(d, s); | |
1159 | } else if (size == 2) { | |
1160 | tcg_gen_ext16s_i32(d, s); | |
1161 | } else { | |
1162 | tcg_gen_mov_tl(d, s); | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | static inline void t_gen_zext(TCGv d, TCGv s, int size) | |
1167 | { | |
1168 | if (size == 1) { | |
1169 | tcg_gen_ext8u_i32(d, s); | |
1170 | } else if (size == 2) { | |
1171 | tcg_gen_ext16u_i32(d, s); | |
1172 | } else { | |
1173 | tcg_gen_mov_tl(d, s); | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | #if DISAS_CRIS | |
1178 | static char memsize_char(int size) | |
1179 | { | |
1180 | switch (size) { | |
1181 | case 1: return 'b'; break; | |
1182 | case 2: return 'w'; break; | |
1183 | case 4: return 'd'; break; | |
1184 | default: | |
1185 | return 'x'; | |
1186 | break; | |
1187 | } | |
1188 | } | |
1189 | #endif | |
1190 | ||
1191 | static inline unsigned int memsize_z(DisasContext *dc) | |
1192 | { | |
1193 | return dc->zsize + 1; | |
1194 | } | |
1195 | ||
1196 | static inline unsigned int memsize_zz(DisasContext *dc) | |
1197 | { | |
1198 | switch (dc->zzsize) { | |
1199 | case 0: return 1; | |
1200 | case 1: return 2; | |
1201 | default: | |
1202 | return 4; | |
1203 | } | |
1204 | } | |
1205 | ||
1206 | static inline void do_postinc (DisasContext *dc, int size) | |
1207 | { | |
1208 | if (dc->postinc) { | |
1209 | tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size); | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd, | |
1214 | int size, int s_ext, TCGv dst) | |
1215 | { | |
1216 | if (s_ext) { | |
1217 | t_gen_sext(dst, cpu_R[rs], size); | |
1218 | } else { | |
1219 | t_gen_zext(dst, cpu_R[rs], size); | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | /* Prepare T0 and T1 for a register alu operation. | |
1224 | s_ext decides if the operand1 should be sign-extended or zero-extended when | |
1225 | needed. */ | |
1226 | static void dec_prep_alu_r(DisasContext *dc, int rs, int rd, | |
1227 | int size, int s_ext, TCGv dst, TCGv src) | |
1228 | { | |
1229 | dec_prep_move_r(dc, rs, rd, size, s_ext, src); | |
1230 | ||
1231 | if (s_ext) { | |
1232 | t_gen_sext(dst, cpu_R[rd], size); | |
1233 | } else { | |
1234 | t_gen_zext(dst, cpu_R[rd], size); | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | static int dec_prep_move_m(CPUCRISState *env, DisasContext *dc, | |
1239 | int s_ext, int memsize, TCGv dst) | |
1240 | { | |
1241 | unsigned int rs; | |
1242 | uint32_t imm; | |
1243 | int is_imm; | |
1244 | int insn_len = 2; | |
1245 | ||
1246 | rs = dc->op1; | |
1247 | is_imm = rs == 15 && dc->postinc; | |
1248 | ||
1249 | /* Load [$rs] onto T1. */ | |
1250 | if (is_imm) { | |
1251 | insn_len = 2 + memsize; | |
1252 | if (memsize == 1) { | |
1253 | insn_len++; | |
1254 | } | |
1255 | ||
1256 | imm = cris_fetch(env, dc, dc->pc + 2, memsize, s_ext); | |
1257 | tcg_gen_movi_tl(dst, imm); | |
1258 | dc->postinc = 0; | |
1259 | } else { | |
1260 | cris_flush_cc_state(dc); | |
1261 | gen_load(dc, dst, cpu_R[rs], memsize, 0); | |
1262 | if (s_ext) { | |
1263 | t_gen_sext(dst, dst, memsize); | |
1264 | } else { | |
1265 | t_gen_zext(dst, dst, memsize); | |
1266 | } | |
1267 | } | |
1268 | return insn_len; | |
1269 | } | |
1270 | ||
1271 | /* Prepare T0 and T1 for a memory + alu operation. | |
1272 | s_ext decides if the operand1 should be sign-extended or zero-extended when | |
1273 | needed. */ | |
1274 | static int dec_prep_alu_m(CPUCRISState *env, DisasContext *dc, | |
1275 | int s_ext, int memsize, TCGv dst, TCGv src) | |
1276 | { | |
1277 | int insn_len; | |
1278 | ||
1279 | insn_len = dec_prep_move_m(env, dc, s_ext, memsize, src); | |
1280 | tcg_gen_mov_tl(dst, cpu_R[dc->op2]); | |
1281 | return insn_len; | |
1282 | } | |
1283 | ||
1284 | #if DISAS_CRIS | |
1285 | static const char *cc_name(int cc) | |
1286 | { | |
1287 | static const char *cc_names[16] = { | |
1288 | "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi", | |
1289 | "ls", "hi", "ge", "lt", "gt", "le", "a", "p" | |
1290 | }; | |
1291 | assert(cc < 16); | |
1292 | return cc_names[cc]; | |
1293 | } | |
1294 | #endif | |
1295 | ||
1296 | /* Start of insn decoders. */ | |
1297 | ||
1298 | static int dec_bccq(CPUCRISState *env, DisasContext *dc) | |
1299 | { | |
1300 | int32_t offset; | |
1301 | int sign; | |
1302 | uint32_t cond = dc->op2; | |
1303 | ||
1304 | offset = EXTRACT_FIELD(dc->ir, 1, 7); | |
1305 | sign = EXTRACT_FIELD(dc->ir, 0, 0); | |
1306 | ||
1307 | offset *= 2; | |
1308 | offset |= sign << 8; | |
1309 | offset = sign_extend(offset, 8); | |
1310 | ||
1311 | LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset); | |
1312 | ||
1313 | /* op2 holds the condition-code. */ | |
1314 | cris_cc_mask(dc, 0); | |
1315 | cris_prepare_cc_branch(dc, offset, cond); | |
1316 | return 2; | |
1317 | } | |
1318 | static int dec_addoq(CPUCRISState *env, DisasContext *dc) | |
1319 | { | |
1320 | int32_t imm; | |
1321 | ||
1322 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7); | |
1323 | imm = sign_extend(dc->op1, 7); | |
1324 | ||
1325 | LOG_DIS("addoq %d, $r%u\n", imm, dc->op2); | |
1326 | cris_cc_mask(dc, 0); | |
1327 | /* Fetch register operand, */ | |
1328 | tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm); | |
1329 | ||
1330 | return 2; | |
1331 | } | |
1332 | static int dec_addq(CPUCRISState *env, DisasContext *dc) | |
1333 | { | |
1334 | LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2); | |
1335 | ||
1336 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); | |
1337 | ||
1338 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1339 | ||
1340 | cris_alu(dc, CC_OP_ADD, | |
1341 | cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4); | |
1342 | return 2; | |
1343 | } | |
1344 | static int dec_moveq(CPUCRISState *env, DisasContext *dc) | |
1345 | { | |
1346 | uint32_t imm; | |
1347 | ||
1348 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); | |
1349 | imm = sign_extend(dc->op1, 5); | |
1350 | LOG_DIS("moveq %d, $r%u\n", imm, dc->op2); | |
1351 | ||
1352 | tcg_gen_movi_tl(cpu_R[dc->op2], imm); | |
1353 | return 2; | |
1354 | } | |
1355 | static int dec_subq(CPUCRISState *env, DisasContext *dc) | |
1356 | { | |
1357 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); | |
1358 | ||
1359 | LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2); | |
1360 | ||
1361 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1362 | cris_alu(dc, CC_OP_SUB, | |
1363 | cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4); | |
1364 | return 2; | |
1365 | } | |
1366 | static int dec_cmpq(CPUCRISState *env, DisasContext *dc) | |
1367 | { | |
1368 | uint32_t imm; | |
1369 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); | |
1370 | imm = sign_extend(dc->op1, 5); | |
1371 | ||
1372 | LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2); | |
1373 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1374 | ||
1375 | cris_alu(dc, CC_OP_CMP, | |
1376 | cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4); | |
1377 | return 2; | |
1378 | } | |
1379 | static int dec_andq(CPUCRISState *env, DisasContext *dc) | |
1380 | { | |
1381 | uint32_t imm; | |
1382 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); | |
1383 | imm = sign_extend(dc->op1, 5); | |
1384 | ||
1385 | LOG_DIS("andq %d, $r%d\n", imm, dc->op2); | |
1386 | cris_cc_mask(dc, CC_MASK_NZ); | |
1387 | ||
1388 | cris_alu(dc, CC_OP_AND, | |
1389 | cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4); | |
1390 | return 2; | |
1391 | } | |
1392 | static int dec_orq(CPUCRISState *env, DisasContext *dc) | |
1393 | { | |
1394 | uint32_t imm; | |
1395 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); | |
1396 | imm = sign_extend(dc->op1, 5); | |
1397 | LOG_DIS("orq %d, $r%d\n", imm, dc->op2); | |
1398 | cris_cc_mask(dc, CC_MASK_NZ); | |
1399 | ||
1400 | cris_alu(dc, CC_OP_OR, | |
1401 | cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4); | |
1402 | return 2; | |
1403 | } | |
1404 | static int dec_btstq(CPUCRISState *env, DisasContext *dc) | |
1405 | { | |
1406 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); | |
1407 | LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2); | |
1408 | ||
1409 | cris_cc_mask(dc, CC_MASK_NZ); | |
1410 | cris_evaluate_flags(dc); | |
1411 | gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2], | |
1412 | tcg_const_tl(dc->op1), cpu_PR[PR_CCS]); | |
1413 | cris_alu(dc, CC_OP_MOVE, | |
1414 | cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4); | |
1415 | cris_update_cc_op(dc, CC_OP_FLAGS, 4); | |
1416 | dc->flags_uptodate = 1; | |
1417 | return 2; | |
1418 | } | |
1419 | static int dec_asrq(CPUCRISState *env, DisasContext *dc) | |
1420 | { | |
1421 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); | |
1422 | LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2); | |
1423 | cris_cc_mask(dc, CC_MASK_NZ); | |
1424 | ||
1425 | tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); | |
1426 | cris_alu(dc, CC_OP_MOVE, | |
1427 | cpu_R[dc->op2], | |
1428 | cpu_R[dc->op2], cpu_R[dc->op2], 4); | |
1429 | return 2; | |
1430 | } | |
1431 | static int dec_lslq(CPUCRISState *env, DisasContext *dc) | |
1432 | { | |
1433 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); | |
1434 | LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2); | |
1435 | ||
1436 | cris_cc_mask(dc, CC_MASK_NZ); | |
1437 | ||
1438 | tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); | |
1439 | ||
1440 | cris_alu(dc, CC_OP_MOVE, | |
1441 | cpu_R[dc->op2], | |
1442 | cpu_R[dc->op2], cpu_R[dc->op2], 4); | |
1443 | return 2; | |
1444 | } | |
1445 | static int dec_lsrq(CPUCRISState *env, DisasContext *dc) | |
1446 | { | |
1447 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); | |
1448 | LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2); | |
1449 | ||
1450 | cris_cc_mask(dc, CC_MASK_NZ); | |
1451 | ||
1452 | tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); | |
1453 | cris_alu(dc, CC_OP_MOVE, | |
1454 | cpu_R[dc->op2], | |
1455 | cpu_R[dc->op2], cpu_R[dc->op2], 4); | |
1456 | return 2; | |
1457 | } | |
1458 | ||
1459 | static int dec_move_r(CPUCRISState *env, DisasContext *dc) | |
1460 | { | |
1461 | int size = memsize_zz(dc); | |
1462 | ||
1463 | LOG_DIS("move.%c $r%u, $r%u\n", | |
1464 | memsize_char(size), dc->op1, dc->op2); | |
1465 | ||
1466 | cris_cc_mask(dc, CC_MASK_NZ); | |
1467 | if (size == 4) { | |
1468 | dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]); | |
1469 | cris_cc_mask(dc, CC_MASK_NZ); | |
1470 | cris_update_cc_op(dc, CC_OP_MOVE, 4); | |
1471 | cris_update_cc_x(dc); | |
1472 | cris_update_result(dc, cpu_R[dc->op2]); | |
1473 | } else { | |
1474 | TCGv t0; | |
1475 | ||
1476 | t0 = tcg_temp_new(); | |
1477 | dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0); | |
1478 | cris_alu(dc, CC_OP_MOVE, | |
1479 | cpu_R[dc->op2], | |
1480 | cpu_R[dc->op2], t0, size); | |
1481 | tcg_temp_free(t0); | |
1482 | } | |
1483 | return 2; | |
1484 | } | |
1485 | ||
1486 | static int dec_scc_r(CPUCRISState *env, DisasContext *dc) | |
1487 | { | |
1488 | int cond = dc->op2; | |
1489 | ||
1490 | LOG_DIS("s%s $r%u\n", | |
1491 | cc_name(cond), dc->op1); | |
1492 | ||
1493 | gen_tst_cc(dc, cpu_R[dc->op1], cond); | |
1494 | tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->op1], cpu_R[dc->op1], 0); | |
1495 | ||
1496 | cris_cc_mask(dc, 0); | |
1497 | return 2; | |
1498 | } | |
1499 | ||
1500 | static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t) | |
1501 | { | |
1502 | if (size == 4) { | |
1503 | t[0] = cpu_R[dc->op2]; | |
1504 | t[1] = cpu_R[dc->op1]; | |
1505 | } else { | |
1506 | t[0] = tcg_temp_new(); | |
1507 | t[1] = tcg_temp_new(); | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t) | |
1512 | { | |
1513 | if (size != 4) { | |
1514 | tcg_temp_free(t[0]); | |
1515 | tcg_temp_free(t[1]); | |
1516 | } | |
1517 | } | |
1518 | ||
1519 | static int dec_and_r(CPUCRISState *env, DisasContext *dc) | |
1520 | { | |
1521 | TCGv t[2]; | |
1522 | int size = memsize_zz(dc); | |
1523 | ||
1524 | LOG_DIS("and.%c $r%u, $r%u\n", | |
1525 | memsize_char(size), dc->op1, dc->op2); | |
1526 | ||
1527 | cris_cc_mask(dc, CC_MASK_NZ); | |
1528 | ||
1529 | cris_alu_alloc_temps(dc, size, t); | |
1530 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1531 | cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size); | |
1532 | cris_alu_free_temps(dc, size, t); | |
1533 | return 2; | |
1534 | } | |
1535 | ||
1536 | static int dec_lz_r(CPUCRISState *env, DisasContext *dc) | |
1537 | { | |
1538 | TCGv t0; | |
1539 | LOG_DIS("lz $r%u, $r%u\n", | |
1540 | dc->op1, dc->op2); | |
1541 | cris_cc_mask(dc, CC_MASK_NZ); | |
1542 | t0 = tcg_temp_new(); | |
1543 | dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0); | |
1544 | cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); | |
1545 | tcg_temp_free(t0); | |
1546 | return 2; | |
1547 | } | |
1548 | ||
1549 | static int dec_lsl_r(CPUCRISState *env, DisasContext *dc) | |
1550 | { | |
1551 | TCGv t[2]; | |
1552 | int size = memsize_zz(dc); | |
1553 | ||
1554 | LOG_DIS("lsl.%c $r%u, $r%u\n", | |
1555 | memsize_char(size), dc->op1, dc->op2); | |
1556 | ||
1557 | cris_cc_mask(dc, CC_MASK_NZ); | |
1558 | cris_alu_alloc_temps(dc, size, t); | |
1559 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1560 | tcg_gen_andi_tl(t[1], t[1], 63); | |
1561 | cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size); | |
1562 | cris_alu_alloc_temps(dc, size, t); | |
1563 | return 2; | |
1564 | } | |
1565 | ||
1566 | static int dec_lsr_r(CPUCRISState *env, DisasContext *dc) | |
1567 | { | |
1568 | TCGv t[2]; | |
1569 | int size = memsize_zz(dc); | |
1570 | ||
1571 | LOG_DIS("lsr.%c $r%u, $r%u\n", | |
1572 | memsize_char(size), dc->op1, dc->op2); | |
1573 | ||
1574 | cris_cc_mask(dc, CC_MASK_NZ); | |
1575 | cris_alu_alloc_temps(dc, size, t); | |
1576 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1577 | tcg_gen_andi_tl(t[1], t[1], 63); | |
1578 | cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size); | |
1579 | cris_alu_free_temps(dc, size, t); | |
1580 | return 2; | |
1581 | } | |
1582 | ||
1583 | static int dec_asr_r(CPUCRISState *env, DisasContext *dc) | |
1584 | { | |
1585 | TCGv t[2]; | |
1586 | int size = memsize_zz(dc); | |
1587 | ||
1588 | LOG_DIS("asr.%c $r%u, $r%u\n", | |
1589 | memsize_char(size), dc->op1, dc->op2); | |
1590 | ||
1591 | cris_cc_mask(dc, CC_MASK_NZ); | |
1592 | cris_alu_alloc_temps(dc, size, t); | |
1593 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); | |
1594 | tcg_gen_andi_tl(t[1], t[1], 63); | |
1595 | cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size); | |
1596 | cris_alu_free_temps(dc, size, t); | |
1597 | return 2; | |
1598 | } | |
1599 | ||
1600 | static int dec_muls_r(CPUCRISState *env, DisasContext *dc) | |
1601 | { | |
1602 | TCGv t[2]; | |
1603 | int size = memsize_zz(dc); | |
1604 | ||
1605 | LOG_DIS("muls.%c $r%u, $r%u\n", | |
1606 | memsize_char(size), dc->op1, dc->op2); | |
1607 | cris_cc_mask(dc, CC_MASK_NZV); | |
1608 | cris_alu_alloc_temps(dc, size, t); | |
1609 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); | |
1610 | ||
1611 | cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4); | |
1612 | cris_alu_free_temps(dc, size, t); | |
1613 | return 2; | |
1614 | } | |
1615 | ||
1616 | static int dec_mulu_r(CPUCRISState *env, DisasContext *dc) | |
1617 | { | |
1618 | TCGv t[2]; | |
1619 | int size = memsize_zz(dc); | |
1620 | ||
1621 | LOG_DIS("mulu.%c $r%u, $r%u\n", | |
1622 | memsize_char(size), dc->op1, dc->op2); | |
1623 | cris_cc_mask(dc, CC_MASK_NZV); | |
1624 | cris_alu_alloc_temps(dc, size, t); | |
1625 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1626 | ||
1627 | cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4); | |
1628 | cris_alu_alloc_temps(dc, size, t); | |
1629 | return 2; | |
1630 | } | |
1631 | ||
1632 | ||
1633 | static int dec_dstep_r(CPUCRISState *env, DisasContext *dc) | |
1634 | { | |
1635 | LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2); | |
1636 | cris_cc_mask(dc, CC_MASK_NZ); | |
1637 | cris_alu(dc, CC_OP_DSTEP, | |
1638 | cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4); | |
1639 | return 2; | |
1640 | } | |
1641 | ||
1642 | static int dec_xor_r(CPUCRISState *env, DisasContext *dc) | |
1643 | { | |
1644 | TCGv t[2]; | |
1645 | int size = memsize_zz(dc); | |
1646 | LOG_DIS("xor.%c $r%u, $r%u\n", | |
1647 | memsize_char(size), dc->op1, dc->op2); | |
1648 | BUG_ON(size != 4); /* xor is dword. */ | |
1649 | cris_cc_mask(dc, CC_MASK_NZ); | |
1650 | cris_alu_alloc_temps(dc, size, t); | |
1651 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1652 | ||
1653 | cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4); | |
1654 | cris_alu_free_temps(dc, size, t); | |
1655 | return 2; | |
1656 | } | |
1657 | ||
1658 | static int dec_bound_r(CPUCRISState *env, DisasContext *dc) | |
1659 | { | |
1660 | TCGv l0; | |
1661 | int size = memsize_zz(dc); | |
1662 | LOG_DIS("bound.%c $r%u, $r%u\n", | |
1663 | memsize_char(size), dc->op1, dc->op2); | |
1664 | cris_cc_mask(dc, CC_MASK_NZ); | |
1665 | l0 = tcg_temp_local_new(); | |
1666 | dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0); | |
1667 | cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4); | |
1668 | tcg_temp_free(l0); | |
1669 | return 2; | |
1670 | } | |
1671 | ||
1672 | static int dec_cmp_r(CPUCRISState *env, DisasContext *dc) | |
1673 | { | |
1674 | TCGv t[2]; | |
1675 | int size = memsize_zz(dc); | |
1676 | LOG_DIS("cmp.%c $r%u, $r%u\n", | |
1677 | memsize_char(size), dc->op1, dc->op2); | |
1678 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1679 | cris_alu_alloc_temps(dc, size, t); | |
1680 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1681 | ||
1682 | cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size); | |
1683 | cris_alu_free_temps(dc, size, t); | |
1684 | return 2; | |
1685 | } | |
1686 | ||
1687 | static int dec_abs_r(CPUCRISState *env, DisasContext *dc) | |
1688 | { | |
1689 | LOG_DIS("abs $r%u, $r%u\n", | |
1690 | dc->op1, dc->op2); | |
1691 | cris_cc_mask(dc, CC_MASK_NZ); | |
1692 | ||
1693 | tcg_gen_abs_tl(cpu_R[dc->op2], cpu_R[dc->op1]); | |
1694 | cris_alu(dc, CC_OP_MOVE, | |
1695 | cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4); | |
1696 | return 2; | |
1697 | } | |
1698 | ||
1699 | static int dec_add_r(CPUCRISState *env, DisasContext *dc) | |
1700 | { | |
1701 | TCGv t[2]; | |
1702 | int size = memsize_zz(dc); | |
1703 | LOG_DIS("add.%c $r%u, $r%u\n", | |
1704 | memsize_char(size), dc->op1, dc->op2); | |
1705 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1706 | cris_alu_alloc_temps(dc, size, t); | |
1707 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1708 | ||
1709 | cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size); | |
1710 | cris_alu_free_temps(dc, size, t); | |
1711 | return 2; | |
1712 | } | |
1713 | ||
1714 | static int dec_addc_r(CPUCRISState *env, DisasContext *dc) | |
1715 | { | |
1716 | LOG_DIS("addc $r%u, $r%u\n", | |
1717 | dc->op1, dc->op2); | |
1718 | cris_evaluate_flags(dc); | |
1719 | /* Set for this insn. */ | |
1720 | dc->flagx_known = 1; | |
1721 | dc->flags_x = X_FLAG; | |
1722 | ||
1723 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1724 | cris_alu(dc, CC_OP_ADDC, | |
1725 | cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4); | |
1726 | return 2; | |
1727 | } | |
1728 | ||
1729 | static int dec_mcp_r(CPUCRISState *env, DisasContext *dc) | |
1730 | { | |
1731 | LOG_DIS("mcp $p%u, $r%u\n", | |
1732 | dc->op2, dc->op1); | |
1733 | cris_evaluate_flags(dc); | |
1734 | cris_cc_mask(dc, CC_MASK_RNZV); | |
1735 | cris_alu(dc, CC_OP_MCP, | |
1736 | cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4); | |
1737 | return 2; | |
1738 | } | |
1739 | ||
1740 | #if DISAS_CRIS | |
1741 | static char * swapmode_name(int mode, char *modename) { | |
1742 | int i = 0; | |
1743 | if (mode & 8) { | |
1744 | modename[i++] = 'n'; | |
1745 | } | |
1746 | if (mode & 4) { | |
1747 | modename[i++] = 'w'; | |
1748 | } | |
1749 | if (mode & 2) { | |
1750 | modename[i++] = 'b'; | |
1751 | } | |
1752 | if (mode & 1) { | |
1753 | modename[i++] = 'r'; | |
1754 | } | |
1755 | modename[i++] = 0; | |
1756 | return modename; | |
1757 | } | |
1758 | #endif | |
1759 | ||
1760 | static int dec_swap_r(CPUCRISState *env, DisasContext *dc) | |
1761 | { | |
1762 | TCGv t0; | |
1763 | #if DISAS_CRIS | |
1764 | char modename[4]; | |
1765 | #endif | |
1766 | LOG_DIS("swap%s $r%u\n", | |
1767 | swapmode_name(dc->op2, modename), dc->op1); | |
1768 | ||
1769 | cris_cc_mask(dc, CC_MASK_NZ); | |
1770 | t0 = tcg_temp_new(); | |
1771 | tcg_gen_mov_tl(t0, cpu_R[dc->op1]); | |
1772 | if (dc->op2 & 8) { | |
1773 | tcg_gen_not_tl(t0, t0); | |
1774 | } | |
1775 | if (dc->op2 & 4) { | |
1776 | t_gen_swapw(t0, t0); | |
1777 | } | |
1778 | if (dc->op2 & 2) { | |
1779 | t_gen_swapb(t0, t0); | |
1780 | } | |
1781 | if (dc->op2 & 1) { | |
1782 | t_gen_swapr(t0, t0); | |
1783 | } | |
1784 | cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op1], cpu_R[dc->op1], t0, 4); | |
1785 | tcg_temp_free(t0); | |
1786 | return 2; | |
1787 | } | |
1788 | ||
1789 | static int dec_or_r(CPUCRISState *env, DisasContext *dc) | |
1790 | { | |
1791 | TCGv t[2]; | |
1792 | int size = memsize_zz(dc); | |
1793 | LOG_DIS("or.%c $r%u, $r%u\n", | |
1794 | memsize_char(size), dc->op1, dc->op2); | |
1795 | cris_cc_mask(dc, CC_MASK_NZ); | |
1796 | cris_alu_alloc_temps(dc, size, t); | |
1797 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1798 | cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size); | |
1799 | cris_alu_free_temps(dc, size, t); | |
1800 | return 2; | |
1801 | } | |
1802 | ||
1803 | static int dec_addi_r(CPUCRISState *env, DisasContext *dc) | |
1804 | { | |
1805 | TCGv t0; | |
1806 | LOG_DIS("addi.%c $r%u, $r%u\n", | |
1807 | memsize_char(memsize_zz(dc)), dc->op2, dc->op1); | |
1808 | cris_cc_mask(dc, 0); | |
1809 | t0 = tcg_temp_new(); | |
1810 | tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize)); | |
1811 | tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0); | |
1812 | tcg_temp_free(t0); | |
1813 | return 2; | |
1814 | } | |
1815 | ||
1816 | static int dec_addi_acr(CPUCRISState *env, DisasContext *dc) | |
1817 | { | |
1818 | TCGv t0; | |
1819 | LOG_DIS("addi.%c $r%u, $r%u, $acr\n", | |
1820 | memsize_char(memsize_zz(dc)), dc->op2, dc->op1); | |
1821 | cris_cc_mask(dc, 0); | |
1822 | t0 = tcg_temp_new(); | |
1823 | tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize)); | |
1824 | tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0); | |
1825 | tcg_temp_free(t0); | |
1826 | return 2; | |
1827 | } | |
1828 | ||
1829 | static int dec_neg_r(CPUCRISState *env, DisasContext *dc) | |
1830 | { | |
1831 | TCGv t[2]; | |
1832 | int size = memsize_zz(dc); | |
1833 | LOG_DIS("neg.%c $r%u, $r%u\n", | |
1834 | memsize_char(size), dc->op1, dc->op2); | |
1835 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1836 | cris_alu_alloc_temps(dc, size, t); | |
1837 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1838 | ||
1839 | cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size); | |
1840 | cris_alu_free_temps(dc, size, t); | |
1841 | return 2; | |
1842 | } | |
1843 | ||
1844 | static int dec_btst_r(CPUCRISState *env, DisasContext *dc) | |
1845 | { | |
1846 | LOG_DIS("btst $r%u, $r%u\n", | |
1847 | dc->op1, dc->op2); | |
1848 | cris_cc_mask(dc, CC_MASK_NZ); | |
1849 | cris_evaluate_flags(dc); | |
1850 | gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2], | |
1851 | cpu_R[dc->op1], cpu_PR[PR_CCS]); | |
1852 | cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], | |
1853 | cpu_R[dc->op2], cpu_R[dc->op2], 4); | |
1854 | cris_update_cc_op(dc, CC_OP_FLAGS, 4); | |
1855 | dc->flags_uptodate = 1; | |
1856 | return 2; | |
1857 | } | |
1858 | ||
1859 | static int dec_sub_r(CPUCRISState *env, DisasContext *dc) | |
1860 | { | |
1861 | TCGv t[2]; | |
1862 | int size = memsize_zz(dc); | |
1863 | LOG_DIS("sub.%c $r%u, $r%u\n", | |
1864 | memsize_char(size), dc->op1, dc->op2); | |
1865 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1866 | cris_alu_alloc_temps(dc, size, t); | |
1867 | dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); | |
1868 | cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size); | |
1869 | cris_alu_free_temps(dc, size, t); | |
1870 | return 2; | |
1871 | } | |
1872 | ||
1873 | /* Zero extension. From size to dword. */ | |
1874 | static int dec_movu_r(CPUCRISState *env, DisasContext *dc) | |
1875 | { | |
1876 | TCGv t0; | |
1877 | int size = memsize_z(dc); | |
1878 | LOG_DIS("movu.%c $r%u, $r%u\n", | |
1879 | memsize_char(size), | |
1880 | dc->op1, dc->op2); | |
1881 | ||
1882 | cris_cc_mask(dc, CC_MASK_NZ); | |
1883 | t0 = tcg_temp_new(); | |
1884 | dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0); | |
1885 | cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); | |
1886 | tcg_temp_free(t0); | |
1887 | return 2; | |
1888 | } | |
1889 | ||
1890 | /* Sign extension. From size to dword. */ | |
1891 | static int dec_movs_r(CPUCRISState *env, DisasContext *dc) | |
1892 | { | |
1893 | TCGv t0; | |
1894 | int size = memsize_z(dc); | |
1895 | LOG_DIS("movs.%c $r%u, $r%u\n", | |
1896 | memsize_char(size), | |
1897 | dc->op1, dc->op2); | |
1898 | ||
1899 | cris_cc_mask(dc, CC_MASK_NZ); | |
1900 | t0 = tcg_temp_new(); | |
1901 | /* Size can only be qi or hi. */ | |
1902 | t_gen_sext(t0, cpu_R[dc->op1], size); | |
1903 | cris_alu(dc, CC_OP_MOVE, | |
1904 | cpu_R[dc->op2], cpu_R[dc->op1], t0, 4); | |
1905 | tcg_temp_free(t0); | |
1906 | return 2; | |
1907 | } | |
1908 | ||
1909 | /* zero extension. From size to dword. */ | |
1910 | static int dec_addu_r(CPUCRISState *env, DisasContext *dc) | |
1911 | { | |
1912 | TCGv t0; | |
1913 | int size = memsize_z(dc); | |
1914 | LOG_DIS("addu.%c $r%u, $r%u\n", | |
1915 | memsize_char(size), | |
1916 | dc->op1, dc->op2); | |
1917 | ||
1918 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1919 | t0 = tcg_temp_new(); | |
1920 | /* Size can only be qi or hi. */ | |
1921 | t_gen_zext(t0, cpu_R[dc->op1], size); | |
1922 | cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); | |
1923 | tcg_temp_free(t0); | |
1924 | return 2; | |
1925 | } | |
1926 | ||
1927 | /* Sign extension. From size to dword. */ | |
1928 | static int dec_adds_r(CPUCRISState *env, DisasContext *dc) | |
1929 | { | |
1930 | TCGv t0; | |
1931 | int size = memsize_z(dc); | |
1932 | LOG_DIS("adds.%c $r%u, $r%u\n", | |
1933 | memsize_char(size), | |
1934 | dc->op1, dc->op2); | |
1935 | ||
1936 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1937 | t0 = tcg_temp_new(); | |
1938 | /* Size can only be qi or hi. */ | |
1939 | t_gen_sext(t0, cpu_R[dc->op1], size); | |
1940 | cris_alu(dc, CC_OP_ADD, | |
1941 | cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); | |
1942 | tcg_temp_free(t0); | |
1943 | return 2; | |
1944 | } | |
1945 | ||
1946 | /* Zero extension. From size to dword. */ | |
1947 | static int dec_subu_r(CPUCRISState *env, DisasContext *dc) | |
1948 | { | |
1949 | TCGv t0; | |
1950 | int size = memsize_z(dc); | |
1951 | LOG_DIS("subu.%c $r%u, $r%u\n", | |
1952 | memsize_char(size), | |
1953 | dc->op1, dc->op2); | |
1954 | ||
1955 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1956 | t0 = tcg_temp_new(); | |
1957 | /* Size can only be qi or hi. */ | |
1958 | t_gen_zext(t0, cpu_R[dc->op1], size); | |
1959 | cris_alu(dc, CC_OP_SUB, | |
1960 | cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); | |
1961 | tcg_temp_free(t0); | |
1962 | return 2; | |
1963 | } | |
1964 | ||
1965 | /* Sign extension. From size to dword. */ | |
1966 | static int dec_subs_r(CPUCRISState *env, DisasContext *dc) | |
1967 | { | |
1968 | TCGv t0; | |
1969 | int size = memsize_z(dc); | |
1970 | LOG_DIS("subs.%c $r%u, $r%u\n", | |
1971 | memsize_char(size), | |
1972 | dc->op1, dc->op2); | |
1973 | ||
1974 | cris_cc_mask(dc, CC_MASK_NZVC); | |
1975 | t0 = tcg_temp_new(); | |
1976 | /* Size can only be qi or hi. */ | |
1977 | t_gen_sext(t0, cpu_R[dc->op1], size); | |
1978 | cris_alu(dc, CC_OP_SUB, | |
1979 | cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); | |
1980 | tcg_temp_free(t0); | |
1981 | return 2; | |
1982 | } | |
1983 | ||
1984 | static int dec_setclrf(CPUCRISState *env, DisasContext *dc) | |
1985 | { | |
1986 | uint32_t flags; | |
1987 | int set = (~dc->opcode >> 2) & 1; | |
1988 | ||
1989 | ||
1990 | flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4) | |
1991 | | EXTRACT_FIELD(dc->ir, 0, 3); | |
1992 | if (set && flags == 0) { | |
1993 | LOG_DIS("nop\n"); | |
1994 | return 2; | |
1995 | } else if (!set && (flags & 0x20)) { | |
1996 | LOG_DIS("di\n"); | |
1997 | } else { | |
1998 | LOG_DIS("%sf %x\n", set ? "set" : "clr", flags); | |
1999 | } | |
2000 | ||
2001 | /* User space is not allowed to touch these. Silently ignore. */ | |
2002 | if (dc->tb_flags & U_FLAG) { | |
2003 | flags &= ~(S_FLAG | I_FLAG | U_FLAG); | |
2004 | } | |
2005 | ||
2006 | if (flags & X_FLAG) { | |
2007 | dc->flagx_known = 1; | |
2008 | if (set) { | |
2009 | dc->flags_x = X_FLAG; | |
2010 | } else { | |
2011 | dc->flags_x = 0; | |
2012 | } | |
2013 | } | |
2014 | ||
2015 | /* Break the TB if any of the SPI flag changes. */ | |
2016 | if (flags & (P_FLAG | S_FLAG)) { | |
2017 | tcg_gen_movi_tl(env_pc, dc->pc + 2); | |
2018 | dc->is_jmp = DISAS_UPDATE; | |
2019 | dc->cpustate_changed = 1; | |
2020 | } | |
2021 | ||
2022 | /* For the I flag, only act on posedge. */ | |
2023 | if ((flags & I_FLAG)) { | |
2024 | tcg_gen_movi_tl(env_pc, dc->pc + 2); | |
2025 | dc->is_jmp = DISAS_UPDATE; | |
2026 | dc->cpustate_changed = 1; | |
2027 | } | |
2028 | ||
2029 | ||
2030 | /* Simply decode the flags. */ | |
2031 | cris_evaluate_flags(dc); | |
2032 | cris_update_cc_op(dc, CC_OP_FLAGS, 4); | |
2033 | cris_update_cc_x(dc); | |
2034 | tcg_gen_movi_tl(cc_op, dc->cc_op); | |
2035 | ||
2036 | if (set) { | |
2037 | if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) { | |
2038 | /* Enter user mode. */ | |
2039 | t_gen_mov_env_TN(ksp, cpu_R[R_SP]); | |
2040 | tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]); | |
2041 | dc->cpustate_changed = 1; | |
2042 | } | |
2043 | tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags); | |
2044 | } else { | |
2045 | tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags); | |
2046 | } | |
2047 | ||
2048 | dc->flags_uptodate = 1; | |
2049 | dc->clear_x = 0; | |
2050 | return 2; | |
2051 | } | |
2052 | ||
2053 | static int dec_move_rs(CPUCRISState *env, DisasContext *dc) | |
2054 | { | |
2055 | LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2); | |
2056 | cris_cc_mask(dc, 0); | |
2057 | gen_helper_movl_sreg_reg(cpu_env, tcg_const_tl(dc->op2), | |
2058 | tcg_const_tl(dc->op1)); | |
2059 | return 2; | |
2060 | } | |
2061 | static int dec_move_sr(CPUCRISState *env, DisasContext *dc) | |
2062 | { | |
2063 | LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1); | |
2064 | cris_cc_mask(dc, 0); | |
2065 | gen_helper_movl_reg_sreg(cpu_env, tcg_const_tl(dc->op1), | |
2066 | tcg_const_tl(dc->op2)); | |
2067 | return 2; | |
2068 | } | |
2069 | ||
2070 | static int dec_move_rp(CPUCRISState *env, DisasContext *dc) | |
2071 | { | |
2072 | TCGv t[2]; | |
2073 | LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2); | |
2074 | cris_cc_mask(dc, 0); | |
2075 | ||
2076 | t[0] = tcg_temp_new(); | |
2077 | if (dc->op2 == PR_CCS) { | |
2078 | cris_evaluate_flags(dc); | |
2079 | tcg_gen_mov_tl(t[0], cpu_R[dc->op1]); | |
2080 | if (dc->tb_flags & U_FLAG) { | |
2081 | t[1] = tcg_temp_new(); | |
2082 | /* User space is not allowed to touch all flags. */ | |
2083 | tcg_gen_andi_tl(t[0], t[0], 0x39f); | |
2084 | tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f); | |
2085 | tcg_gen_or_tl(t[0], t[1], t[0]); | |
2086 | tcg_temp_free(t[1]); | |
2087 | } | |
2088 | } else { | |
2089 | tcg_gen_mov_tl(t[0], cpu_R[dc->op1]); | |
2090 | } | |
2091 | ||
2092 | t_gen_mov_preg_TN(dc, dc->op2, t[0]); | |
2093 | if (dc->op2 == PR_CCS) { | |
2094 | cris_update_cc_op(dc, CC_OP_FLAGS, 4); | |
2095 | dc->flags_uptodate = 1; | |
2096 | } | |
2097 | tcg_temp_free(t[0]); | |
2098 | return 2; | |
2099 | } | |
2100 | static int dec_move_pr(CPUCRISState *env, DisasContext *dc) | |
2101 | { | |
2102 | TCGv t0; | |
2103 | LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1); | |
2104 | cris_cc_mask(dc, 0); | |
2105 | ||
2106 | if (dc->op2 == PR_CCS) { | |
2107 | cris_evaluate_flags(dc); | |
2108 | } | |
2109 | ||
2110 | if (dc->op2 == PR_DZ) { | |
2111 | tcg_gen_movi_tl(cpu_R[dc->op1], 0); | |
2112 | } else { | |
2113 | t0 = tcg_temp_new(); | |
2114 | t_gen_mov_TN_preg(t0, dc->op2); | |
2115 | cris_alu(dc, CC_OP_MOVE, | |
2116 | cpu_R[dc->op1], cpu_R[dc->op1], t0, | |
2117 | preg_sizes[dc->op2]); | |
2118 | tcg_temp_free(t0); | |
2119 | } | |
2120 | return 2; | |
2121 | } | |
2122 | ||
2123 | static int dec_move_mr(CPUCRISState *env, DisasContext *dc) | |
2124 | { | |
2125 | int memsize = memsize_zz(dc); | |
2126 | int insn_len; | |
2127 | LOG_DIS("move.%c [$r%u%s, $r%u\n", | |
2128 | memsize_char(memsize), | |
2129 | dc->op1, dc->postinc ? "+]" : "]", | |
2130 | dc->op2); | |
2131 | ||
2132 | if (memsize == 4) { | |
2133 | insn_len = dec_prep_move_m(env, dc, 0, 4, cpu_R[dc->op2]); | |
2134 | cris_cc_mask(dc, CC_MASK_NZ); | |
2135 | cris_update_cc_op(dc, CC_OP_MOVE, 4); | |
2136 | cris_update_cc_x(dc); | |
2137 | cris_update_result(dc, cpu_R[dc->op2]); | |
2138 | } else { | |
2139 | TCGv t0; | |
2140 | ||
2141 | t0 = tcg_temp_new(); | |
2142 | insn_len = dec_prep_move_m(env, dc, 0, memsize, t0); | |
2143 | cris_cc_mask(dc, CC_MASK_NZ); | |
2144 | cris_alu(dc, CC_OP_MOVE, | |
2145 | cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize); | |
2146 | tcg_temp_free(t0); | |
2147 | } | |
2148 | do_postinc(dc, memsize); | |
2149 | return insn_len; | |
2150 | } | |
2151 | ||
2152 | static inline void cris_alu_m_alloc_temps(TCGv *t) | |
2153 | { | |
2154 | t[0] = tcg_temp_new(); | |
2155 | t[1] = tcg_temp_new(); | |
2156 | } | |
2157 | ||
2158 | static inline void cris_alu_m_free_temps(TCGv *t) | |
2159 | { | |
2160 | tcg_temp_free(t[0]); | |
2161 | tcg_temp_free(t[1]); | |
2162 | } | |
2163 | ||
2164 | static int dec_movs_m(CPUCRISState *env, DisasContext *dc) | |
2165 | { | |
2166 | TCGv t[2]; | |
2167 | int memsize = memsize_z(dc); | |
2168 | int insn_len; | |
2169 | LOG_DIS("movs.%c [$r%u%s, $r%u\n", | |
2170 | memsize_char(memsize), | |
2171 | dc->op1, dc->postinc ? "+]" : "]", | |
2172 | dc->op2); | |
2173 | ||
2174 | cris_alu_m_alloc_temps(t); | |
2175 | /* sign extend. */ | |
2176 | insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); | |
2177 | cris_cc_mask(dc, CC_MASK_NZ); | |
2178 | cris_alu(dc, CC_OP_MOVE, | |
2179 | cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); | |
2180 | do_postinc(dc, memsize); | |
2181 | cris_alu_m_free_temps(t); | |
2182 | return insn_len; | |
2183 | } | |
2184 | ||
2185 | static int dec_addu_m(CPUCRISState *env, DisasContext *dc) | |
2186 | { | |
2187 | TCGv t[2]; | |
2188 | int memsize = memsize_z(dc); | |
2189 | int insn_len; | |
2190 | LOG_DIS("addu.%c [$r%u%s, $r%u\n", | |
2191 | memsize_char(memsize), | |
2192 | dc->op1, dc->postinc ? "+]" : "]", | |
2193 | dc->op2); | |
2194 | ||
2195 | cris_alu_m_alloc_temps(t); | |
2196 | /* sign extend. */ | |
2197 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2198 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2199 | cris_alu(dc, CC_OP_ADD, | |
2200 | cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); | |
2201 | do_postinc(dc, memsize); | |
2202 | cris_alu_m_free_temps(t); | |
2203 | return insn_len; | |
2204 | } | |
2205 | ||
2206 | static int dec_adds_m(CPUCRISState *env, DisasContext *dc) | |
2207 | { | |
2208 | TCGv t[2]; | |
2209 | int memsize = memsize_z(dc); | |
2210 | int insn_len; | |
2211 | LOG_DIS("adds.%c [$r%u%s, $r%u\n", | |
2212 | memsize_char(memsize), | |
2213 | dc->op1, dc->postinc ? "+]" : "]", | |
2214 | dc->op2); | |
2215 | ||
2216 | cris_alu_m_alloc_temps(t); | |
2217 | /* sign extend. */ | |
2218 | insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); | |
2219 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2220 | cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); | |
2221 | do_postinc(dc, memsize); | |
2222 | cris_alu_m_free_temps(t); | |
2223 | return insn_len; | |
2224 | } | |
2225 | ||
2226 | static int dec_subu_m(CPUCRISState *env, DisasContext *dc) | |
2227 | { | |
2228 | TCGv t[2]; | |
2229 | int memsize = memsize_z(dc); | |
2230 | int insn_len; | |
2231 | LOG_DIS("subu.%c [$r%u%s, $r%u\n", | |
2232 | memsize_char(memsize), | |
2233 | dc->op1, dc->postinc ? "+]" : "]", | |
2234 | dc->op2); | |
2235 | ||
2236 | cris_alu_m_alloc_temps(t); | |
2237 | /* sign extend. */ | |
2238 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2239 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2240 | cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); | |
2241 | do_postinc(dc, memsize); | |
2242 | cris_alu_m_free_temps(t); | |
2243 | return insn_len; | |
2244 | } | |
2245 | ||
2246 | static int dec_subs_m(CPUCRISState *env, DisasContext *dc) | |
2247 | { | |
2248 | TCGv t[2]; | |
2249 | int memsize = memsize_z(dc); | |
2250 | int insn_len; | |
2251 | LOG_DIS("subs.%c [$r%u%s, $r%u\n", | |
2252 | memsize_char(memsize), | |
2253 | dc->op1, dc->postinc ? "+]" : "]", | |
2254 | dc->op2); | |
2255 | ||
2256 | cris_alu_m_alloc_temps(t); | |
2257 | /* sign extend. */ | |
2258 | insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); | |
2259 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2260 | cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); | |
2261 | do_postinc(dc, memsize); | |
2262 | cris_alu_m_free_temps(t); | |
2263 | return insn_len; | |
2264 | } | |
2265 | ||
2266 | static int dec_movu_m(CPUCRISState *env, DisasContext *dc) | |
2267 | { | |
2268 | TCGv t[2]; | |
2269 | int memsize = memsize_z(dc); | |
2270 | int insn_len; | |
2271 | ||
2272 | LOG_DIS("movu.%c [$r%u%s, $r%u\n", | |
2273 | memsize_char(memsize), | |
2274 | dc->op1, dc->postinc ? "+]" : "]", | |
2275 | dc->op2); | |
2276 | ||
2277 | cris_alu_m_alloc_temps(t); | |
2278 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2279 | cris_cc_mask(dc, CC_MASK_NZ); | |
2280 | cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); | |
2281 | do_postinc(dc, memsize); | |
2282 | cris_alu_m_free_temps(t); | |
2283 | return insn_len; | |
2284 | } | |
2285 | ||
2286 | static int dec_cmpu_m(CPUCRISState *env, DisasContext *dc) | |
2287 | { | |
2288 | TCGv t[2]; | |
2289 | int memsize = memsize_z(dc); | |
2290 | int insn_len; | |
2291 | LOG_DIS("cmpu.%c [$r%u%s, $r%u\n", | |
2292 | memsize_char(memsize), | |
2293 | dc->op1, dc->postinc ? "+]" : "]", | |
2294 | dc->op2); | |
2295 | ||
2296 | cris_alu_m_alloc_temps(t); | |
2297 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2298 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2299 | cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); | |
2300 | do_postinc(dc, memsize); | |
2301 | cris_alu_m_free_temps(t); | |
2302 | return insn_len; | |
2303 | } | |
2304 | ||
2305 | static int dec_cmps_m(CPUCRISState *env, DisasContext *dc) | |
2306 | { | |
2307 | TCGv t[2]; | |
2308 | int memsize = memsize_z(dc); | |
2309 | int insn_len; | |
2310 | LOG_DIS("cmps.%c [$r%u%s, $r%u\n", | |
2311 | memsize_char(memsize), | |
2312 | dc->op1, dc->postinc ? "+]" : "]", | |
2313 | dc->op2); | |
2314 | ||
2315 | cris_alu_m_alloc_temps(t); | |
2316 | insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); | |
2317 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2318 | cris_alu(dc, CC_OP_CMP, | |
2319 | cpu_R[dc->op2], cpu_R[dc->op2], t[1], | |
2320 | memsize_zz(dc)); | |
2321 | do_postinc(dc, memsize); | |
2322 | cris_alu_m_free_temps(t); | |
2323 | return insn_len; | |
2324 | } | |
2325 | ||
2326 | static int dec_cmp_m(CPUCRISState *env, DisasContext *dc) | |
2327 | { | |
2328 | TCGv t[2]; | |
2329 | int memsize = memsize_zz(dc); | |
2330 | int insn_len; | |
2331 | LOG_DIS("cmp.%c [$r%u%s, $r%u\n", | |
2332 | memsize_char(memsize), | |
2333 | dc->op1, dc->postinc ? "+]" : "]", | |
2334 | dc->op2); | |
2335 | ||
2336 | cris_alu_m_alloc_temps(t); | |
2337 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2338 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2339 | cris_alu(dc, CC_OP_CMP, | |
2340 | cpu_R[dc->op2], cpu_R[dc->op2], t[1], | |
2341 | memsize_zz(dc)); | |
2342 | do_postinc(dc, memsize); | |
2343 | cris_alu_m_free_temps(t); | |
2344 | return insn_len; | |
2345 | } | |
2346 | ||
2347 | static int dec_test_m(CPUCRISState *env, DisasContext *dc) | |
2348 | { | |
2349 | TCGv t[2]; | |
2350 | int memsize = memsize_zz(dc); | |
2351 | int insn_len; | |
2352 | LOG_DIS("test.%c [$r%u%s] op2=%x\n", | |
2353 | memsize_char(memsize), | |
2354 | dc->op1, dc->postinc ? "+]" : "]", | |
2355 | dc->op2); | |
2356 | ||
2357 | cris_evaluate_flags(dc); | |
2358 | ||
2359 | cris_alu_m_alloc_temps(t); | |
2360 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2361 | cris_cc_mask(dc, CC_MASK_NZ); | |
2362 | tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3); | |
2363 | ||
2364 | cris_alu(dc, CC_OP_CMP, | |
2365 | cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc)); | |
2366 | do_postinc(dc, memsize); | |
2367 | cris_alu_m_free_temps(t); | |
2368 | return insn_len; | |
2369 | } | |
2370 | ||
2371 | static int dec_and_m(CPUCRISState *env, DisasContext *dc) | |
2372 | { | |
2373 | TCGv t[2]; | |
2374 | int memsize = memsize_zz(dc); | |
2375 | int insn_len; | |
2376 | LOG_DIS("and.%c [$r%u%s, $r%u\n", | |
2377 | memsize_char(memsize), | |
2378 | dc->op1, dc->postinc ? "+]" : "]", | |
2379 | dc->op2); | |
2380 | ||
2381 | cris_alu_m_alloc_temps(t); | |
2382 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2383 | cris_cc_mask(dc, CC_MASK_NZ); | |
2384 | cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); | |
2385 | do_postinc(dc, memsize); | |
2386 | cris_alu_m_free_temps(t); | |
2387 | return insn_len; | |
2388 | } | |
2389 | ||
2390 | static int dec_add_m(CPUCRISState *env, DisasContext *dc) | |
2391 | { | |
2392 | TCGv t[2]; | |
2393 | int memsize = memsize_zz(dc); | |
2394 | int insn_len; | |
2395 | LOG_DIS("add.%c [$r%u%s, $r%u\n", | |
2396 | memsize_char(memsize), | |
2397 | dc->op1, dc->postinc ? "+]" : "]", | |
2398 | dc->op2); | |
2399 | ||
2400 | cris_alu_m_alloc_temps(t); | |
2401 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2402 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2403 | cris_alu(dc, CC_OP_ADD, | |
2404 | cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); | |
2405 | do_postinc(dc, memsize); | |
2406 | cris_alu_m_free_temps(t); | |
2407 | return insn_len; | |
2408 | } | |
2409 | ||
2410 | static int dec_addo_m(CPUCRISState *env, DisasContext *dc) | |
2411 | { | |
2412 | TCGv t[2]; | |
2413 | int memsize = memsize_zz(dc); | |
2414 | int insn_len; | |
2415 | LOG_DIS("add.%c [$r%u%s, $r%u\n", | |
2416 | memsize_char(memsize), | |
2417 | dc->op1, dc->postinc ? "+]" : "]", | |
2418 | dc->op2); | |
2419 | ||
2420 | cris_alu_m_alloc_temps(t); | |
2421 | insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); | |
2422 | cris_cc_mask(dc, 0); | |
2423 | cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4); | |
2424 | do_postinc(dc, memsize); | |
2425 | cris_alu_m_free_temps(t); | |
2426 | return insn_len; | |
2427 | } | |
2428 | ||
2429 | static int dec_bound_m(CPUCRISState *env, DisasContext *dc) | |
2430 | { | |
2431 | TCGv l[2]; | |
2432 | int memsize = memsize_zz(dc); | |
2433 | int insn_len; | |
2434 | LOG_DIS("bound.%c [$r%u%s, $r%u\n", | |
2435 | memsize_char(memsize), | |
2436 | dc->op1, dc->postinc ? "+]" : "]", | |
2437 | dc->op2); | |
2438 | ||
2439 | l[0] = tcg_temp_local_new(); | |
2440 | l[1] = tcg_temp_local_new(); | |
2441 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, l[0], l[1]); | |
2442 | cris_cc_mask(dc, CC_MASK_NZ); | |
2443 | cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4); | |
2444 | do_postinc(dc, memsize); | |
2445 | tcg_temp_free(l[0]); | |
2446 | tcg_temp_free(l[1]); | |
2447 | return insn_len; | |
2448 | } | |
2449 | ||
2450 | static int dec_addc_mr(CPUCRISState *env, DisasContext *dc) | |
2451 | { | |
2452 | TCGv t[2]; | |
2453 | int insn_len = 2; | |
2454 | LOG_DIS("addc [$r%u%s, $r%u\n", | |
2455 | dc->op1, dc->postinc ? "+]" : "]", | |
2456 | dc->op2); | |
2457 | ||
2458 | cris_evaluate_flags(dc); | |
2459 | ||
2460 | /* Set for this insn. */ | |
2461 | dc->flagx_known = 1; | |
2462 | dc->flags_x = X_FLAG; | |
2463 | ||
2464 | cris_alu_m_alloc_temps(t); | |
2465 | insn_len = dec_prep_alu_m(env, dc, 0, 4, t[0], t[1]); | |
2466 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2467 | cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4); | |
2468 | do_postinc(dc, 4); | |
2469 | cris_alu_m_free_temps(t); | |
2470 | return insn_len; | |
2471 | } | |
2472 | ||
2473 | static int dec_sub_m(CPUCRISState *env, DisasContext *dc) | |
2474 | { | |
2475 | TCGv t[2]; | |
2476 | int memsize = memsize_zz(dc); | |
2477 | int insn_len; | |
2478 | LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n", | |
2479 | memsize_char(memsize), | |
2480 | dc->op1, dc->postinc ? "+]" : "]", | |
2481 | dc->op2, dc->ir, dc->zzsize); | |
2482 | ||
2483 | cris_alu_m_alloc_temps(t); | |
2484 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2485 | cris_cc_mask(dc, CC_MASK_NZVC); | |
2486 | cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize); | |
2487 | do_postinc(dc, memsize); | |
2488 | cris_alu_m_free_temps(t); | |
2489 | return insn_len; | |
2490 | } | |
2491 | ||
2492 | static int dec_or_m(CPUCRISState *env, DisasContext *dc) | |
2493 | { | |
2494 | TCGv t[2]; | |
2495 | int memsize = memsize_zz(dc); | |
2496 | int insn_len; | |
2497 | LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n", | |
2498 | memsize_char(memsize), | |
2499 | dc->op1, dc->postinc ? "+]" : "]", | |
2500 | dc->op2, dc->pc); | |
2501 | ||
2502 | cris_alu_m_alloc_temps(t); | |
2503 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2504 | cris_cc_mask(dc, CC_MASK_NZ); | |
2505 | cris_alu(dc, CC_OP_OR, | |
2506 | cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); | |
2507 | do_postinc(dc, memsize); | |
2508 | cris_alu_m_free_temps(t); | |
2509 | return insn_len; | |
2510 | } | |
2511 | ||
2512 | static int dec_move_mp(CPUCRISState *env, DisasContext *dc) | |
2513 | { | |
2514 | TCGv t[2]; | |
2515 | int memsize = memsize_zz(dc); | |
2516 | int insn_len = 2; | |
2517 | ||
2518 | LOG_DIS("move.%c [$r%u%s, $p%u\n", | |
2519 | memsize_char(memsize), | |
2520 | dc->op1, | |
2521 | dc->postinc ? "+]" : "]", | |
2522 | dc->op2); | |
2523 | ||
2524 | cris_alu_m_alloc_temps(t); | |
2525 | insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); | |
2526 | cris_cc_mask(dc, 0); | |
2527 | if (dc->op2 == PR_CCS) { | |
2528 | cris_evaluate_flags(dc); | |
2529 | if (dc->tb_flags & U_FLAG) { | |
2530 | /* User space is not allowed to touch all flags. */ | |
2531 | tcg_gen_andi_tl(t[1], t[1], 0x39f); | |
2532 | tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f); | |
2533 | tcg_gen_or_tl(t[1], t[0], t[1]); | |
2534 | } | |
2535 | } | |
2536 | ||
2537 | t_gen_mov_preg_TN(dc, dc->op2, t[1]); | |
2538 | ||
2539 | do_postinc(dc, memsize); | |
2540 | cris_alu_m_free_temps(t); | |
2541 | return insn_len; | |
2542 | } | |
2543 | ||
2544 | static int dec_move_pm(CPUCRISState *env, DisasContext *dc) | |
2545 | { | |
2546 | TCGv t0; | |
2547 | int memsize; | |
2548 | ||
2549 | memsize = preg_sizes[dc->op2]; | |
2550 | ||
2551 | LOG_DIS("move.%c $p%u, [$r%u%s\n", | |
2552 | memsize_char(memsize), | |
2553 | dc->op2, dc->op1, dc->postinc ? "+]" : "]"); | |
2554 | ||
2555 | /* prepare store. Address in T0, value in T1. */ | |
2556 | if (dc->op2 == PR_CCS) { | |
2557 | cris_evaluate_flags(dc); | |
2558 | } | |
2559 | t0 = tcg_temp_new(); | |
2560 | t_gen_mov_TN_preg(t0, dc->op2); | |
2561 | cris_flush_cc_state(dc); | |
2562 | gen_store(dc, cpu_R[dc->op1], t0, memsize); | |
2563 | tcg_temp_free(t0); | |
2564 | ||
2565 | cris_cc_mask(dc, 0); | |
2566 | if (dc->postinc) { | |
2567 | tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); | |
2568 | } | |
2569 | return 2; | |
2570 | } | |
2571 | ||
2572 | static int dec_movem_mr(CPUCRISState *env, DisasContext *dc) | |
2573 | { | |
2574 | TCGv_i64 tmp[16]; | |
2575 | TCGv tmp32; | |
2576 | TCGv addr; | |
2577 | int i; | |
2578 | int nr = dc->op2 + 1; | |
2579 | ||
2580 | LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1, | |
2581 | dc->postinc ? "+]" : "]", dc->op2); | |
2582 | ||
2583 | addr = tcg_temp_new(); | |
2584 | /* There are probably better ways of doing this. */ | |
2585 | cris_flush_cc_state(dc); | |
2586 | for (i = 0; i < (nr >> 1); i++) { | |
2587 | tmp[i] = tcg_temp_new_i64(); | |
2588 | tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8); | |
2589 | gen_load64(dc, tmp[i], addr); | |
2590 | } | |
2591 | if (nr & 1) { | |
2592 | tmp32 = tcg_temp_new_i32(); | |
2593 | tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8); | |
2594 | gen_load(dc, tmp32, addr, 4, 0); | |
2595 | } else { | |
2596 | tmp32 = NULL; | |
2597 | } | |
2598 | tcg_temp_free(addr); | |
2599 | ||
2600 | for (i = 0; i < (nr >> 1); i++) { | |
2601 | tcg_gen_extrl_i64_i32(cpu_R[i * 2], tmp[i]); | |
2602 | tcg_gen_shri_i64(tmp[i], tmp[i], 32); | |
2603 | tcg_gen_extrl_i64_i32(cpu_R[i * 2 + 1], tmp[i]); | |
2604 | tcg_temp_free_i64(tmp[i]); | |
2605 | } | |
2606 | if (nr & 1) { | |
2607 | tcg_gen_mov_tl(cpu_R[dc->op2], tmp32); | |
2608 | tcg_temp_free(tmp32); | |
2609 | } | |
2610 | ||
2611 | /* writeback the updated pointer value. */ | |
2612 | if (dc->postinc) { | |
2613 | tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4); | |
2614 | } | |
2615 | ||
2616 | /* gen_load might want to evaluate the previous insns flags. */ | |
2617 | cris_cc_mask(dc, 0); | |
2618 | return 2; | |
2619 | } | |
2620 | ||
2621 | static int dec_movem_rm(CPUCRISState *env, DisasContext *dc) | |
2622 | { | |
2623 | TCGv tmp; | |
2624 | TCGv addr; | |
2625 | int i; | |
2626 | ||
2627 | LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1, | |
2628 | dc->postinc ? "+]" : "]"); | |
2629 | ||
2630 | cris_flush_cc_state(dc); | |
2631 | ||
2632 | tmp = tcg_temp_new(); | |
2633 | addr = tcg_temp_new(); | |
2634 | tcg_gen_movi_tl(tmp, 4); | |
2635 | tcg_gen_mov_tl(addr, cpu_R[dc->op1]); | |
2636 | for (i = 0; i <= dc->op2; i++) { | |
2637 | /* Displace addr. */ | |
2638 | /* Perform the store. */ | |
2639 | gen_store(dc, addr, cpu_R[i], 4); | |
2640 | tcg_gen_add_tl(addr, addr, tmp); | |
2641 | } | |
2642 | if (dc->postinc) { | |
2643 | tcg_gen_mov_tl(cpu_R[dc->op1], addr); | |
2644 | } | |
2645 | cris_cc_mask(dc, 0); | |
2646 | tcg_temp_free(tmp); | |
2647 | tcg_temp_free(addr); | |
2648 | return 2; | |
2649 | } | |
2650 | ||
2651 | static int dec_move_rm(CPUCRISState *env, DisasContext *dc) | |
2652 | { | |
2653 | int memsize; | |
2654 | ||
2655 | memsize = memsize_zz(dc); | |
2656 | ||
2657 | LOG_DIS("move.%c $r%u, [$r%u]\n", | |
2658 | memsize_char(memsize), dc->op2, dc->op1); | |
2659 | ||
2660 | /* prepare store. */ | |
2661 | cris_flush_cc_state(dc); | |
2662 | gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize); | |
2663 | ||
2664 | if (dc->postinc) { | |
2665 | tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); | |
2666 | } | |
2667 | cris_cc_mask(dc, 0); | |
2668 | return 2; | |
2669 | } | |
2670 | ||
2671 | static int dec_lapcq(CPUCRISState *env, DisasContext *dc) | |
2672 | { | |
2673 | LOG_DIS("lapcq %x, $r%u\n", | |
2674 | dc->pc + dc->op1*2, dc->op2); | |
2675 | cris_cc_mask(dc, 0); | |
2676 | tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2); | |
2677 | return 2; | |
2678 | } | |
2679 | ||
2680 | static int dec_lapc_im(CPUCRISState *env, DisasContext *dc) | |
2681 | { | |
2682 | unsigned int rd; | |
2683 | int32_t imm; | |
2684 | int32_t pc; | |
2685 | ||
2686 | rd = dc->op2; | |
2687 | ||
2688 | cris_cc_mask(dc, 0); | |
2689 | imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); | |
2690 | LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2); | |
2691 | ||
2692 | pc = dc->pc; | |
2693 | pc += imm; | |
2694 | tcg_gen_movi_tl(cpu_R[rd], pc); | |
2695 | return 6; | |
2696 | } | |
2697 | ||
2698 | /* Jump to special reg. */ | |
2699 | static int dec_jump_p(CPUCRISState *env, DisasContext *dc) | |
2700 | { | |
2701 | LOG_DIS("jump $p%u\n", dc->op2); | |
2702 | ||
2703 | if (dc->op2 == PR_CCS) { | |
2704 | cris_evaluate_flags(dc); | |
2705 | } | |
2706 | t_gen_mov_TN_preg(env_btarget, dc->op2); | |
2707 | /* rete will often have low bit set to indicate delayslot. */ | |
2708 | tcg_gen_andi_tl(env_btarget, env_btarget, ~1); | |
2709 | cris_cc_mask(dc, 0); | |
2710 | cris_prepare_jmp(dc, JMP_INDIRECT); | |
2711 | return 2; | |
2712 | } | |
2713 | ||
2714 | /* Jump and save. */ | |
2715 | static int dec_jas_r(CPUCRISState *env, DisasContext *dc) | |
2716 | { | |
2717 | LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2); | |
2718 | cris_cc_mask(dc, 0); | |
2719 | /* Store the return address in Pd. */ | |
2720 | tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); | |
2721 | if (dc->op2 > 15) { | |
2722 | abort(); | |
2723 | } | |
2724 | t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4)); | |
2725 | ||
2726 | cris_prepare_jmp(dc, JMP_INDIRECT); | |
2727 | return 2; | |
2728 | } | |
2729 | ||
2730 | static int dec_jas_im(CPUCRISState *env, DisasContext *dc) | |
2731 | { | |
2732 | uint32_t imm; | |
2733 | ||
2734 | imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); | |
2735 | ||
2736 | LOG_DIS("jas 0x%x\n", imm); | |
2737 | cris_cc_mask(dc, 0); | |
2738 | /* Store the return address in Pd. */ | |
2739 | t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8)); | |
2740 | ||
2741 | dc->jmp_pc = imm; | |
2742 | cris_prepare_jmp(dc, JMP_DIRECT); | |
2743 | return 6; | |
2744 | } | |
2745 | ||
2746 | static int dec_jasc_im(CPUCRISState *env, DisasContext *dc) | |
2747 | { | |
2748 | uint32_t imm; | |
2749 | ||
2750 | imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); | |
2751 | ||
2752 | LOG_DIS("jasc 0x%x\n", imm); | |
2753 | cris_cc_mask(dc, 0); | |
2754 | /* Store the return address in Pd. */ | |
2755 | t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4)); | |
2756 | ||
2757 | dc->jmp_pc = imm; | |
2758 | cris_prepare_jmp(dc, JMP_DIRECT); | |
2759 | return 6; | |
2760 | } | |
2761 | ||
2762 | static int dec_jasc_r(CPUCRISState *env, DisasContext *dc) | |
2763 | { | |
2764 | LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2); | |
2765 | cris_cc_mask(dc, 0); | |
2766 | /* Store the return address in Pd. */ | |
2767 | tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); | |
2768 | t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4)); | |
2769 | cris_prepare_jmp(dc, JMP_INDIRECT); | |
2770 | return 2; | |
2771 | } | |
2772 | ||
2773 | static int dec_bcc_im(CPUCRISState *env, DisasContext *dc) | |
2774 | { | |
2775 | int32_t offset; | |
2776 | uint32_t cond = dc->op2; | |
2777 | ||
2778 | offset = cris_fetch(env, dc, dc->pc + 2, 2, 1); | |
2779 | ||
2780 | LOG_DIS("b%s %d pc=%x dst=%x\n", | |
2781 | cc_name(cond), offset, | |
2782 | dc->pc, dc->pc + offset); | |
2783 | ||
2784 | cris_cc_mask(dc, 0); | |
2785 | /* op2 holds the condition-code. */ | |
2786 | cris_prepare_cc_branch(dc, offset, cond); | |
2787 | return 4; | |
2788 | } | |
2789 | ||
2790 | static int dec_bas_im(CPUCRISState *env, DisasContext *dc) | |
2791 | { | |
2792 | int32_t simm; | |
2793 | ||
2794 | simm = cris_fetch(env, dc, dc->pc + 2, 4, 0); | |
2795 | ||
2796 | LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2); | |
2797 | cris_cc_mask(dc, 0); | |
2798 | /* Store the return address in Pd. */ | |
2799 | t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8)); | |
2800 | ||
2801 | dc->jmp_pc = dc->pc + simm; | |
2802 | cris_prepare_jmp(dc, JMP_DIRECT); | |
2803 | return 6; | |
2804 | } | |
2805 | ||
2806 | static int dec_basc_im(CPUCRISState *env, DisasContext *dc) | |
2807 | { | |
2808 | int32_t simm; | |
2809 | simm = cris_fetch(env, dc, dc->pc + 2, 4, 0); | |
2810 | ||
2811 | LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2); | |
2812 | cris_cc_mask(dc, 0); | |
2813 | /* Store the return address in Pd. */ | |
2814 | t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12)); | |
2815 | ||
2816 | dc->jmp_pc = dc->pc + simm; | |
2817 | cris_prepare_jmp(dc, JMP_DIRECT); | |
2818 | return 6; | |
2819 | } | |
2820 | ||
2821 | static int dec_rfe_etc(CPUCRISState *env, DisasContext *dc) | |
2822 | { | |
2823 | cris_cc_mask(dc, 0); | |
2824 | ||
2825 | if (dc->op2 == 15) { | |
2826 | tcg_gen_st_i32(tcg_const_i32(1), cpu_env, | |
2827 | -offsetof(CRISCPU, env) + offsetof(CPUState, halted)); | |
2828 | tcg_gen_movi_tl(env_pc, dc->pc + 2); | |
2829 | t_gen_raise_exception(EXCP_HLT); | |
2830 | return 2; | |
2831 | } | |
2832 | ||
2833 | switch (dc->op2 & 7) { | |
2834 | case 2: | |
2835 | /* rfe. */ | |
2836 | LOG_DIS("rfe\n"); | |
2837 | cris_evaluate_flags(dc); | |
2838 | gen_helper_rfe(cpu_env); | |
2839 | dc->is_jmp = DISAS_UPDATE; | |
2840 | break; | |
2841 | case 5: | |
2842 | /* rfn. */ | |
2843 | LOG_DIS("rfn\n"); | |
2844 | cris_evaluate_flags(dc); | |
2845 | gen_helper_rfn(cpu_env); | |
2846 | dc->is_jmp = DISAS_UPDATE; | |
2847 | break; | |
2848 | case 6: | |
2849 | LOG_DIS("break %d\n", dc->op1); | |
2850 | cris_evaluate_flags(dc); | |
2851 | /* break. */ | |
2852 | tcg_gen_movi_tl(env_pc, dc->pc + 2); | |
2853 | ||
2854 | /* Breaks start at 16 in the exception vector. */ | |
2855 | t_gen_mov_env_TN(trap_vector, | |
2856 | tcg_const_tl(dc->op1 + 16)); | |
2857 | t_gen_raise_exception(EXCP_BREAK); | |
2858 | dc->is_jmp = DISAS_UPDATE; | |
2859 | break; | |
2860 | default: | |
2861 | printf("op2=%x\n", dc->op2); | |
2862 | BUG(); | |
2863 | break; | |
2864 | ||
2865 | } | |
2866 | return 2; | |
2867 | } | |
2868 | ||
2869 | static int dec_ftag_fidx_d_m(CPUCRISState *env, DisasContext *dc) | |
2870 | { | |
2871 | return 2; | |
2872 | } | |
2873 | ||
2874 | static int dec_ftag_fidx_i_m(CPUCRISState *env, DisasContext *dc) | |
2875 | { | |
2876 | return 2; | |
2877 | } | |
2878 | ||
2879 | static int dec_null(CPUCRISState *env, DisasContext *dc) | |
2880 | { | |
2881 | printf("unknown insn pc=%x opc=%x op1=%x op2=%x\n", | |
2882 | dc->pc, dc->opcode, dc->op1, dc->op2); | |
2883 | fflush(NULL); | |
2884 | BUG(); | |
2885 | return 2; | |
2886 | } | |
2887 | ||
2888 | static struct decoder_info { | |
2889 | struct { | |
2890 | uint32_t bits; | |
2891 | uint32_t mask; | |
2892 | }; | |
2893 | int (*dec)(CPUCRISState *env, DisasContext *dc); | |
2894 | } decinfo[] = { | |
2895 | /* Order matters here. */ | |
2896 | {DEC_MOVEQ, dec_moveq}, | |
2897 | {DEC_BTSTQ, dec_btstq}, | |
2898 | {DEC_CMPQ, dec_cmpq}, | |
2899 | {DEC_ADDOQ, dec_addoq}, | |
2900 | {DEC_ADDQ, dec_addq}, | |
2901 | {DEC_SUBQ, dec_subq}, | |
2902 | {DEC_ANDQ, dec_andq}, | |
2903 | {DEC_ORQ, dec_orq}, | |
2904 | {DEC_ASRQ, dec_asrq}, | |
2905 | {DEC_LSLQ, dec_lslq}, | |
2906 | {DEC_LSRQ, dec_lsrq}, | |
2907 | {DEC_BCCQ, dec_bccq}, | |
2908 | ||
2909 | {DEC_BCC_IM, dec_bcc_im}, | |
2910 | {DEC_JAS_IM, dec_jas_im}, | |
2911 | {DEC_JAS_R, dec_jas_r}, | |
2912 | {DEC_JASC_IM, dec_jasc_im}, | |
2913 | {DEC_JASC_R, dec_jasc_r}, | |
2914 | {DEC_BAS_IM, dec_bas_im}, | |
2915 | {DEC_BASC_IM, dec_basc_im}, | |
2916 | {DEC_JUMP_P, dec_jump_p}, | |
2917 | {DEC_LAPC_IM, dec_lapc_im}, | |
2918 | {DEC_LAPCQ, dec_lapcq}, | |
2919 | ||
2920 | {DEC_RFE_ETC, dec_rfe_etc}, | |
2921 | {DEC_ADDC_MR, dec_addc_mr}, | |
2922 | ||
2923 | {DEC_MOVE_MP, dec_move_mp}, | |
2924 | {DEC_MOVE_PM, dec_move_pm}, | |
2925 | {DEC_MOVEM_MR, dec_movem_mr}, | |
2926 | {DEC_MOVEM_RM, dec_movem_rm}, | |
2927 | {DEC_MOVE_PR, dec_move_pr}, | |
2928 | {DEC_SCC_R, dec_scc_r}, | |
2929 | {DEC_SETF, dec_setclrf}, | |
2930 | {DEC_CLEARF, dec_setclrf}, | |
2931 | ||
2932 | {DEC_MOVE_SR, dec_move_sr}, | |
2933 | {DEC_MOVE_RP, dec_move_rp}, | |
2934 | {DEC_SWAP_R, dec_swap_r}, | |
2935 | {DEC_ABS_R, dec_abs_r}, | |
2936 | {DEC_LZ_R, dec_lz_r}, | |
2937 | {DEC_MOVE_RS, dec_move_rs}, | |
2938 | {DEC_BTST_R, dec_btst_r}, | |
2939 | {DEC_ADDC_R, dec_addc_r}, | |
2940 | ||
2941 | {DEC_DSTEP_R, dec_dstep_r}, | |
2942 | {DEC_XOR_R, dec_xor_r}, | |
2943 | {DEC_MCP_R, dec_mcp_r}, | |
2944 | {DEC_CMP_R, dec_cmp_r}, | |
2945 | ||
2946 | {DEC_ADDI_R, dec_addi_r}, | |
2947 | {DEC_ADDI_ACR, dec_addi_acr}, | |
2948 | ||
2949 | {DEC_ADD_R, dec_add_r}, | |
2950 | {DEC_SUB_R, dec_sub_r}, | |
2951 | ||
2952 | {DEC_ADDU_R, dec_addu_r}, | |
2953 | {DEC_ADDS_R, dec_adds_r}, | |
2954 | {DEC_SUBU_R, dec_subu_r}, | |
2955 | {DEC_SUBS_R, dec_subs_r}, | |
2956 | {DEC_LSL_R, dec_lsl_r}, | |
2957 | ||
2958 | {DEC_AND_R, dec_and_r}, | |
2959 | {DEC_OR_R, dec_or_r}, | |
2960 | {DEC_BOUND_R, dec_bound_r}, | |
2961 | {DEC_ASR_R, dec_asr_r}, | |
2962 | {DEC_LSR_R, dec_lsr_r}, | |
2963 | ||
2964 | {DEC_MOVU_R, dec_movu_r}, | |
2965 | {DEC_MOVS_R, dec_movs_r}, | |
2966 | {DEC_NEG_R, dec_neg_r}, | |
2967 | {DEC_MOVE_R, dec_move_r}, | |
2968 | ||
2969 | {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m}, | |
2970 | {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m}, | |
2971 | ||
2972 | {DEC_MULS_R, dec_muls_r}, | |
2973 | {DEC_MULU_R, dec_mulu_r}, | |
2974 | ||
2975 | {DEC_ADDU_M, dec_addu_m}, | |
2976 | {DEC_ADDS_M, dec_adds_m}, | |
2977 | {DEC_SUBU_M, dec_subu_m}, | |
2978 | {DEC_SUBS_M, dec_subs_m}, | |
2979 | ||
2980 | {DEC_CMPU_M, dec_cmpu_m}, | |
2981 | {DEC_CMPS_M, dec_cmps_m}, | |
2982 | {DEC_MOVU_M, dec_movu_m}, | |
2983 | {DEC_MOVS_M, dec_movs_m}, | |
2984 | ||
2985 | {DEC_CMP_M, dec_cmp_m}, | |
2986 | {DEC_ADDO_M, dec_addo_m}, | |
2987 | {DEC_BOUND_M, dec_bound_m}, | |
2988 | {DEC_ADD_M, dec_add_m}, | |
2989 | {DEC_SUB_M, dec_sub_m}, | |
2990 | {DEC_AND_M, dec_and_m}, | |
2991 | {DEC_OR_M, dec_or_m}, | |
2992 | {DEC_MOVE_RM, dec_move_rm}, | |
2993 | {DEC_TEST_M, dec_test_m}, | |
2994 | {DEC_MOVE_MR, dec_move_mr}, | |
2995 | ||
2996 | {{0, 0}, dec_null} | |
2997 | }; | |
2998 | ||
2999 | static unsigned int crisv32_decoder(CPUCRISState *env, DisasContext *dc) | |
3000 | { | |
3001 | int insn_len = 2; | |
3002 | int i; | |
3003 | ||
3004 | /* Load a halfword onto the instruction register. */ | |
3005 | dc->ir = cris_fetch(env, dc, dc->pc, 2, 0); | |
3006 | ||
3007 | /* Now decode it. */ | |
3008 | dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11); | |
3009 | dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3); | |
3010 | dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15); | |
3011 | dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4); | |
3012 | dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5); | |
3013 | dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10); | |
3014 | ||
3015 | /* Large switch for all insns. */ | |
3016 | for (i = 0; i < ARRAY_SIZE(decinfo); i++) { | |
3017 | if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) { | |
3018 | insn_len = decinfo[i].dec(env, dc); | |
3019 | break; | |
3020 | } | |
3021 | } | |
3022 | ||
3023 | #if !defined(CONFIG_USER_ONLY) | |
3024 | /* Single-stepping ? */ | |
3025 | if (dc->tb_flags & S_FLAG) { | |
3026 | TCGLabel *l1 = gen_new_label(); | |
3027 | tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1); | |
3028 | /* We treat SPC as a break with an odd trap vector. */ | |
3029 | cris_evaluate_flags(dc); | |
3030 | t_gen_mov_env_TN(trap_vector, tcg_const_tl(3)); | |
3031 | tcg_gen_movi_tl(env_pc, dc->pc + insn_len); | |
3032 | tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len); | |
3033 | t_gen_raise_exception(EXCP_BREAK); | |
3034 | gen_set_label(l1); | |
3035 | } | |
3036 | #endif | |
3037 | return insn_len; | |
3038 | } | |
3039 | ||
3040 | #include "translate_v10.inc.c" | |
3041 | ||
3042 | /* | |
3043 | * Delay slots on QEMU/CRIS. | |
3044 | * | |
3045 | * If an exception hits on a delayslot, the core will let ERP (the Exception | |
3046 | * Return Pointer) point to the branch (the previous) insn and set the lsb to | |
3047 | * to give SW a hint that the exception actually hit on the dslot. | |
3048 | * | |
3049 | * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by | |
3050 | * the core and any jmp to an odd addresses will mask off that lsb. It is | |
3051 | * simply there to let sw know there was an exception on a dslot. | |
3052 | * | |
3053 | * When the software returns from an exception, the branch will re-execute. | |
3054 | * On QEMU care needs to be taken when a branch+delayslot sequence is broken | |
3055 | * and the branch and delayslot don't share pages. | |
3056 | * | |
3057 | * The TB contaning the branch insn will set up env->btarget and evaluate | |
3058 | * env->btaken. When the translation loop exits we will note that the branch | |
3059 | * sequence is broken and let env->dslot be the size of the branch insn (those | |
3060 | * vary in length). | |
3061 | * | |
3062 | * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb | |
3063 | * set). It will also expect to have env->dslot setup with the size of the | |
3064 | * delay slot so that env->pc - env->dslot point to the branch insn. This TB | |
3065 | * will execute the dslot and take the branch, either to btarget or just one | |
3066 | * insn ahead. | |
3067 | * | |
3068 | * When exceptions occur, we check for env->dslot in do_interrupt to detect | |
3069 | * broken branch sequences and setup $erp accordingly (i.e let it point to the | |
3070 | * branch and set lsb). Then env->dslot gets cleared so that the exception | |
3071 | * handler can enter. When returning from exceptions (jump $erp) the lsb gets | |
3072 | * masked off and we will reexecute the branch insn. | |
3073 | * | |
3074 | */ | |
3075 | ||
3076 | /* generate intermediate code for basic block 'tb'. */ | |
3077 | void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns) | |
3078 | { | |
3079 | CPUCRISState *env = cs->env_ptr; | |
3080 | uint32_t pc_start; | |
3081 | unsigned int insn_len; | |
3082 | struct DisasContext ctx; | |
3083 | struct DisasContext *dc = &ctx; | |
3084 | uint32_t page_start; | |
3085 | target_ulong npc; | |
3086 | int num_insns; | |
3087 | ||
3088 | if (env->pregs[PR_VR] == 32) { | |
3089 | dc->decoder = crisv32_decoder; | |
3090 | dc->clear_locked_irq = 0; | |
3091 | } else { | |
3092 | dc->decoder = crisv10_decoder; | |
3093 | dc->clear_locked_irq = 1; | |
3094 | } | |
3095 | ||
3096 | /* Odd PC indicates that branch is rexecuting due to exception in the | |
3097 | * delayslot, like in real hw. | |
3098 | */ | |
3099 | pc_start = tb->pc & ~1; | |
3100 | dc->cpu = env_archcpu(env); | |
3101 | dc->tb = tb; | |
3102 | ||
3103 | dc->is_jmp = DISAS_NEXT; | |
3104 | dc->ppc = pc_start; | |
3105 | dc->pc = pc_start; | |
3106 | dc->singlestep_enabled = cs->singlestep_enabled; | |
3107 | dc->flags_uptodate = 1; | |
3108 | dc->flagx_known = 1; | |
3109 | dc->flags_x = tb->flags & X_FLAG; | |
3110 | dc->cc_x_uptodate = 0; | |
3111 | dc->cc_mask = 0; | |
3112 | dc->update_cc = 0; | |
3113 | dc->clear_prefix = 0; | |
3114 | ||
3115 | cris_update_cc_op(dc, CC_OP_FLAGS, 4); | |
3116 | dc->cc_size_uptodate = -1; | |
3117 | ||
3118 | /* Decode TB flags. */ | |
3119 | dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG \ | |
3120 | | X_FLAG | PFIX_FLAG); | |
3121 | dc->delayed_branch = !!(tb->flags & 7); | |
3122 | if (dc->delayed_branch) { | |
3123 | dc->jmp = JMP_INDIRECT; | |
3124 | } else { | |
3125 | dc->jmp = JMP_NOJMP; | |
3126 | } | |
3127 | ||
3128 | dc->cpustate_changed = 0; | |
3129 | ||
3130 | page_start = pc_start & TARGET_PAGE_MASK; | |
3131 | num_insns = 0; | |
3132 | ||
3133 | gen_tb_start(tb); | |
3134 | do { | |
3135 | tcg_gen_insn_start(dc->delayed_branch == 1 | |
3136 | ? dc->ppc | 1 : dc->pc); | |
3137 | num_insns++; | |
3138 | ||
3139 | if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) { | |
3140 | cris_evaluate_flags(dc); | |
3141 | tcg_gen_movi_tl(env_pc, dc->pc); | |
3142 | t_gen_raise_exception(EXCP_DEBUG); | |
3143 | dc->is_jmp = DISAS_UPDATE; | |
3144 | /* The address covered by the breakpoint must be included in | |
3145 | [tb->pc, tb->pc + tb->size) in order to for it to be | |
3146 | properly cleared -- thus we increment the PC here so that | |
3147 | the logic setting tb->size below does the right thing. */ | |
3148 | dc->pc += 2; | |
3149 | break; | |
3150 | } | |
3151 | ||
3152 | /* Pretty disas. */ | |
3153 | LOG_DIS("%8.8x:\t", dc->pc); | |
3154 | ||
3155 | if (num_insns == max_insns && (tb_cflags(tb) & CF_LAST_IO)) { | |
3156 | gen_io_start(); | |
3157 | } | |
3158 | dc->clear_x = 1; | |
3159 | ||
3160 | insn_len = dc->decoder(env, dc); | |
3161 | dc->ppc = dc->pc; | |
3162 | dc->pc += insn_len; | |
3163 | if (dc->clear_x) { | |
3164 | cris_clear_x_flag(dc); | |
3165 | } | |
3166 | ||
3167 | /* Check for delayed branches here. If we do it before | |
3168 | actually generating any host code, the simulator will just | |
3169 | loop doing nothing for on this program location. */ | |
3170 | if (dc->delayed_branch) { | |
3171 | dc->delayed_branch--; | |
3172 | if (dc->delayed_branch == 0) { | |
3173 | if (tb->flags & 7) { | |
3174 | t_gen_mov_env_TN(dslot, tcg_const_tl(0)); | |
3175 | } | |
3176 | if (dc->cpustate_changed || !dc->flagx_known | |
3177 | || (dc->flags_x != (tb->flags & X_FLAG))) { | |
3178 | cris_store_direct_jmp(dc); | |
3179 | } | |
3180 | ||
3181 | if (dc->clear_locked_irq) { | |
3182 | dc->clear_locked_irq = 0; | |
3183 | t_gen_mov_env_TN(locked_irq, tcg_const_tl(0)); | |
3184 | } | |
3185 | ||
3186 | if (dc->jmp == JMP_DIRECT_CC) { | |
3187 | TCGLabel *l1 = gen_new_label(); | |
3188 | cris_evaluate_flags(dc); | |
3189 | ||
3190 | /* Conditional jmp. */ | |
3191 | tcg_gen_brcondi_tl(TCG_COND_EQ, | |
3192 | env_btaken, 0, l1); | |
3193 | gen_goto_tb(dc, 1, dc->jmp_pc); | |
3194 | gen_set_label(l1); | |
3195 | gen_goto_tb(dc, 0, dc->pc); | |
3196 | dc->is_jmp = DISAS_TB_JUMP; | |
3197 | dc->jmp = JMP_NOJMP; | |
3198 | } else if (dc->jmp == JMP_DIRECT) { | |
3199 | cris_evaluate_flags(dc); | |
3200 | gen_goto_tb(dc, 0, dc->jmp_pc); | |
3201 | dc->is_jmp = DISAS_TB_JUMP; | |
3202 | dc->jmp = JMP_NOJMP; | |
3203 | } else { | |
3204 | t_gen_cc_jmp(env_btarget, tcg_const_tl(dc->pc)); | |
3205 | dc->is_jmp = DISAS_JUMP; | |
3206 | } | |
3207 | break; | |
3208 | } | |
3209 | } | |
3210 | ||
3211 | /* If we are rexecuting a branch due to exceptions on | |
3212 | delay slots don't break. */ | |
3213 | if (!(tb->pc & 1) && cs->singlestep_enabled) { | |
3214 | break; | |
3215 | } | |
3216 | } while (!dc->is_jmp && !dc->cpustate_changed | |
3217 | && !tcg_op_buf_full() | |
3218 | && !singlestep | |
3219 | && (dc->pc - page_start < TARGET_PAGE_SIZE) | |
3220 | && num_insns < max_insns); | |
3221 | ||
3222 | if (dc->clear_locked_irq) { | |
3223 | t_gen_mov_env_TN(locked_irq, tcg_const_tl(0)); | |
3224 | } | |
3225 | ||
3226 | npc = dc->pc; | |
3227 | ||
3228 | /* Force an update if the per-tb cpu state has changed. */ | |
3229 | if (dc->is_jmp == DISAS_NEXT | |
3230 | && (dc->cpustate_changed || !dc->flagx_known | |
3231 | || (dc->flags_x != (tb->flags & X_FLAG)))) { | |
3232 | dc->is_jmp = DISAS_UPDATE; | |
3233 | tcg_gen_movi_tl(env_pc, npc); | |
3234 | } | |
3235 | /* Broken branch+delayslot sequence. */ | |
3236 | if (dc->delayed_branch == 1) { | |
3237 | /* Set env->dslot to the size of the branch insn. */ | |
3238 | t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc)); | |
3239 | cris_store_direct_jmp(dc); | |
3240 | } | |
3241 | ||
3242 | cris_evaluate_flags(dc); | |
3243 | ||
3244 | if (unlikely(cs->singlestep_enabled)) { | |
3245 | if (dc->is_jmp == DISAS_NEXT) { | |
3246 | tcg_gen_movi_tl(env_pc, npc); | |
3247 | } | |
3248 | t_gen_raise_exception(EXCP_DEBUG); | |
3249 | } else { | |
3250 | switch (dc->is_jmp) { | |
3251 | case DISAS_NEXT: | |
3252 | gen_goto_tb(dc, 1, npc); | |
3253 | break; | |
3254 | default: | |
3255 | case DISAS_JUMP: | |
3256 | case DISAS_UPDATE: | |
3257 | /* indicate that the hash table must be used | |
3258 | to find the next TB */ | |
3259 | tcg_gen_exit_tb(NULL, 0); | |
3260 | break; | |
3261 | case DISAS_SWI: | |
3262 | case DISAS_TB_JUMP: | |
3263 | /* nothing more to generate */ | |
3264 | break; | |
3265 | } | |
3266 | } | |
3267 | gen_tb_end(tb, num_insns); | |
3268 | ||
3269 | tb->size = dc->pc - pc_start; | |
3270 | tb->icount = num_insns; | |
3271 | ||
3272 | #ifdef DEBUG_DISAS | |
3273 | #if !DISAS_CRIS | |
3274 | if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) | |
3275 | && qemu_log_in_addr_range(pc_start)) { | |
3276 | FILE *logfile = qemu_log_lock(); | |
3277 | qemu_log("--------------\n"); | |
3278 | qemu_log("IN: %s\n", lookup_symbol(pc_start)); | |
3279 | log_target_disas(cs, pc_start, dc->pc - pc_start); | |
3280 | qemu_log_unlock(logfile); | |
3281 | } | |
3282 | #endif | |
3283 | #endif | |
3284 | } | |
3285 | ||
3286 | void cris_cpu_dump_state(CPUState *cs, FILE *f, int flags) | |
3287 | { | |
3288 | CRISCPU *cpu = CRIS_CPU(cs); | |
3289 | CPUCRISState *env = &cpu->env; | |
3290 | const char **regnames; | |
3291 | const char **pregnames; | |
3292 | int i; | |
3293 | ||
3294 | if (!env) { | |
3295 | return; | |
3296 | } | |
3297 | if (env->pregs[PR_VR] < 32) { | |
3298 | pregnames = pregnames_v10; | |
3299 | regnames = regnames_v10; | |
3300 | } else { | |
3301 | pregnames = pregnames_v32; | |
3302 | regnames = regnames_v32; | |
3303 | } | |
3304 | ||
3305 | qemu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n" | |
3306 | "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n", | |
3307 | env->pc, env->pregs[PR_CCS], env->btaken, env->btarget, | |
3308 | env->cc_op, | |
3309 | env->cc_src, env->cc_dest, env->cc_result, env->cc_mask); | |
3310 | ||
3311 | ||
3312 | for (i = 0; i < 16; i++) { | |
3313 | qemu_fprintf(f, "%s=%8.8x ", regnames[i], env->regs[i]); | |
3314 | if ((i + 1) % 4 == 0) { | |
3315 | qemu_fprintf(f, "\n"); | |
3316 | } | |
3317 | } | |
3318 | qemu_fprintf(f, "\nspecial regs:\n"); | |
3319 | for (i = 0; i < 16; i++) { | |
3320 | qemu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]); | |
3321 | if ((i + 1) % 4 == 0) { | |
3322 | qemu_fprintf(f, "\n"); | |
3323 | } | |
3324 | } | |
3325 | if (env->pregs[PR_VR] >= 32) { | |
3326 | uint32_t srs = env->pregs[PR_SRS]; | |
3327 | qemu_fprintf(f, "\nsupport function regs bank %x:\n", srs); | |
3328 | if (srs < ARRAY_SIZE(env->sregs)) { | |
3329 | for (i = 0; i < 16; i++) { | |
3330 | qemu_fprintf(f, "s%2.2d=%8.8x ", | |
3331 | i, env->sregs[srs][i]); | |
3332 | if ((i + 1) % 4 == 0) { | |
3333 | qemu_fprintf(f, "\n"); | |
3334 | } | |
3335 | } | |
3336 | } | |
3337 | } | |
3338 | qemu_fprintf(f, "\n\n"); | |
3339 | ||
3340 | } | |
3341 | ||
3342 | void cris_initialize_tcg(void) | |
3343 | { | |
3344 | int i; | |
3345 | ||
3346 | cc_x = tcg_global_mem_new(cpu_env, | |
3347 | offsetof(CPUCRISState, cc_x), "cc_x"); | |
3348 | cc_src = tcg_global_mem_new(cpu_env, | |
3349 | offsetof(CPUCRISState, cc_src), "cc_src"); | |
3350 | cc_dest = tcg_global_mem_new(cpu_env, | |
3351 | offsetof(CPUCRISState, cc_dest), | |
3352 | "cc_dest"); | |
3353 | cc_result = tcg_global_mem_new(cpu_env, | |
3354 | offsetof(CPUCRISState, cc_result), | |
3355 | "cc_result"); | |
3356 | cc_op = tcg_global_mem_new(cpu_env, | |
3357 | offsetof(CPUCRISState, cc_op), "cc_op"); | |
3358 | cc_size = tcg_global_mem_new(cpu_env, | |
3359 | offsetof(CPUCRISState, cc_size), | |
3360 | "cc_size"); | |
3361 | cc_mask = tcg_global_mem_new(cpu_env, | |
3362 | offsetof(CPUCRISState, cc_mask), | |
3363 | "cc_mask"); | |
3364 | ||
3365 | env_pc = tcg_global_mem_new(cpu_env, | |
3366 | offsetof(CPUCRISState, pc), | |
3367 | "pc"); | |
3368 | env_btarget = tcg_global_mem_new(cpu_env, | |
3369 | offsetof(CPUCRISState, btarget), | |
3370 | "btarget"); | |
3371 | env_btaken = tcg_global_mem_new(cpu_env, | |
3372 | offsetof(CPUCRISState, btaken), | |
3373 | "btaken"); | |
3374 | for (i = 0; i < 16; i++) { | |
3375 | cpu_R[i] = tcg_global_mem_new(cpu_env, | |
3376 | offsetof(CPUCRISState, regs[i]), | |
3377 | regnames_v32[i]); | |
3378 | } | |
3379 | for (i = 0; i < 16; i++) { | |
3380 | cpu_PR[i] = tcg_global_mem_new(cpu_env, | |
3381 | offsetof(CPUCRISState, pregs[i]), | |
3382 | pregnames_v32[i]); | |
3383 | } | |
3384 | } | |
3385 | ||
3386 | void restore_state_to_opc(CPUCRISState *env, TranslationBlock *tb, | |
3387 | target_ulong *data) | |
3388 | { | |
3389 | env->pc = data[0]; | |
3390 | } |