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Commit | Line | Data |
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4acb54ba EI |
1 | /* |
2 | * Xilinx MicroBlaze emulation for qemu: main translation routines. | |
3 | * | |
4 | * Copyright (c) 2009 Edgar E. Iglesias. | |
dadc1064 | 5 | * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd. |
4acb54ba EI |
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 | |
8167ee88 | 18 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
4acb54ba EI |
19 | */ |
20 | ||
4acb54ba | 21 | #include "cpu.h" |
76cad711 | 22 | #include "disas/disas.h" |
4acb54ba EI |
23 | #include "tcg-op.h" |
24 | #include "helper.h" | |
25 | #include "microblaze-decode.h" | |
4acb54ba EI |
26 | |
27 | #define GEN_HELPER 1 | |
28 | #include "helper.h" | |
29 | ||
30 | #define SIM_COMPAT 0 | |
31 | #define DISAS_GNU 1 | |
32 | #define DISAS_MB 1 | |
33 | #if DISAS_MB && !SIM_COMPAT | |
34 | # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__) | |
35 | #else | |
36 | # define LOG_DIS(...) do { } while (0) | |
37 | #endif | |
38 | ||
39 | #define D(x) | |
40 | ||
41 | #define EXTRACT_FIELD(src, start, end) \ | |
42 | (((src) >> start) & ((1 << (end - start + 1)) - 1)) | |
43 | ||
44 | static TCGv env_debug; | |
45 | static TCGv_ptr cpu_env; | |
46 | static TCGv cpu_R[32]; | |
47 | static TCGv cpu_SR[18]; | |
48 | static TCGv env_imm; | |
49 | static TCGv env_btaken; | |
50 | static TCGv env_btarget; | |
51 | static TCGv env_iflags; | |
4a536270 | 52 | static TCGv env_res_addr; |
11a76217 | 53 | static TCGv env_res_val; |
4acb54ba | 54 | |
022c62cb | 55 | #include "exec/gen-icount.h" |
4acb54ba EI |
56 | |
57 | /* This is the state at translation time. */ | |
58 | typedef struct DisasContext { | |
68cee38a | 59 | CPUMBState *env; |
a5efa644 | 60 | target_ulong pc; |
4acb54ba EI |
61 | |
62 | /* Decoder. */ | |
63 | int type_b; | |
64 | uint32_t ir; | |
65 | uint8_t opcode; | |
66 | uint8_t rd, ra, rb; | |
67 | uint16_t imm; | |
68 | ||
69 | unsigned int cpustate_changed; | |
70 | unsigned int delayed_branch; | |
71 | unsigned int tb_flags, synced_flags; /* tb dependent flags. */ | |
72 | unsigned int clear_imm; | |
73 | int is_jmp; | |
74 | ||
844bab60 EI |
75 | #define JMP_NOJMP 0 |
76 | #define JMP_DIRECT 1 | |
77 | #define JMP_DIRECT_CC 2 | |
78 | #define JMP_INDIRECT 3 | |
4acb54ba EI |
79 | unsigned int jmp; |
80 | uint32_t jmp_pc; | |
81 | ||
82 | int abort_at_next_insn; | |
83 | int nr_nops; | |
84 | struct TranslationBlock *tb; | |
85 | int singlestep_enabled; | |
86 | } DisasContext; | |
87 | ||
38972938 | 88 | static const char *regnames[] = |
4acb54ba EI |
89 | { |
90 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
91 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
92 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
93 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
94 | }; | |
95 | ||
38972938 | 96 | static const char *special_regnames[] = |
4acb54ba EI |
97 | { |
98 | "rpc", "rmsr", "sr2", "sr3", "sr4", "sr5", "sr6", "sr7", | |
99 | "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15", | |
100 | "sr16", "sr17", "sr18" | |
101 | }; | |
102 | ||
103 | /* Sign extend at translation time. */ | |
104 | static inline int sign_extend(unsigned int val, unsigned int width) | |
105 | { | |
106 | int sval; | |
107 | ||
108 | /* LSL. */ | |
109 | val <<= 31 - width; | |
110 | sval = val; | |
111 | /* ASR. */ | |
112 | sval >>= 31 - width; | |
113 | return sval; | |
114 | } | |
115 | ||
116 | static inline void t_sync_flags(DisasContext *dc) | |
117 | { | |
4abf79a4 | 118 | /* Synch the tb dependent flags between translator and runtime. */ |
4acb54ba EI |
119 | if (dc->tb_flags != dc->synced_flags) { |
120 | tcg_gen_movi_tl(env_iflags, dc->tb_flags); | |
121 | dc->synced_flags = dc->tb_flags; | |
122 | } | |
123 | } | |
124 | ||
125 | static inline void t_gen_raise_exception(DisasContext *dc, uint32_t index) | |
126 | { | |
127 | TCGv_i32 tmp = tcg_const_i32(index); | |
128 | ||
129 | t_sync_flags(dc); | |
130 | tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc); | |
64254eba | 131 | gen_helper_raise_exception(cpu_env, tmp); |
4acb54ba EI |
132 | tcg_temp_free_i32(tmp); |
133 | dc->is_jmp = DISAS_UPDATE; | |
134 | } | |
135 | ||
136 | static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) | |
137 | { | |
138 | TranslationBlock *tb; | |
139 | tb = dc->tb; | |
140 | if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) { | |
141 | tcg_gen_goto_tb(n); | |
142 | tcg_gen_movi_tl(cpu_SR[SR_PC], dest); | |
8cfd0495 | 143 | tcg_gen_exit_tb((uintptr_t)tb + n); |
4acb54ba EI |
144 | } else { |
145 | tcg_gen_movi_tl(cpu_SR[SR_PC], dest); | |
146 | tcg_gen_exit_tb(0); | |
147 | } | |
148 | } | |
149 | ||
ee8b246f EI |
150 | static void read_carry(DisasContext *dc, TCGv d) |
151 | { | |
152 | tcg_gen_shri_tl(d, cpu_SR[SR_MSR], 31); | |
153 | } | |
154 | ||
04ec7df7 EI |
155 | /* |
156 | * write_carry sets the carry bits in MSR based on bit 0 of v. | |
157 | * v[31:1] are ignored. | |
158 | */ | |
ee8b246f EI |
159 | static void write_carry(DisasContext *dc, TCGv v) |
160 | { | |
161 | TCGv t0 = tcg_temp_new(); | |
162 | tcg_gen_shli_tl(t0, v, 31); | |
163 | tcg_gen_sari_tl(t0, t0, 31); | |
164 | tcg_gen_andi_tl(t0, t0, (MSR_C | MSR_CC)); | |
165 | tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], | |
166 | ~(MSR_C | MSR_CC)); | |
167 | tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], t0); | |
168 | tcg_temp_free(t0); | |
169 | } | |
170 | ||
65ab5eb4 | 171 | static void write_carryi(DisasContext *dc, bool carry) |
8cc9b43f PC |
172 | { |
173 | TCGv t0 = tcg_temp_new(); | |
65ab5eb4 | 174 | tcg_gen_movi_tl(t0, carry); |
8cc9b43f PC |
175 | write_carry(dc, t0); |
176 | tcg_temp_free(t0); | |
177 | } | |
178 | ||
61204ce8 EI |
179 | /* True if ALU operand b is a small immediate that may deserve |
180 | faster treatment. */ | |
181 | static inline int dec_alu_op_b_is_small_imm(DisasContext *dc) | |
182 | { | |
183 | /* Immediate insn without the imm prefix ? */ | |
184 | return dc->type_b && !(dc->tb_flags & IMM_FLAG); | |
185 | } | |
186 | ||
4acb54ba EI |
187 | static inline TCGv *dec_alu_op_b(DisasContext *dc) |
188 | { | |
189 | if (dc->type_b) { | |
190 | if (dc->tb_flags & IMM_FLAG) | |
191 | tcg_gen_ori_tl(env_imm, env_imm, dc->imm); | |
192 | else | |
193 | tcg_gen_movi_tl(env_imm, (int32_t)((int16_t)dc->imm)); | |
194 | return &env_imm; | |
195 | } else | |
196 | return &cpu_R[dc->rb]; | |
197 | } | |
198 | ||
199 | static void dec_add(DisasContext *dc) | |
200 | { | |
201 | unsigned int k, c; | |
40cbf5b7 | 202 | TCGv cf; |
4acb54ba EI |
203 | |
204 | k = dc->opcode & 4; | |
205 | c = dc->opcode & 2; | |
206 | ||
207 | LOG_DIS("add%s%s%s r%d r%d r%d\n", | |
208 | dc->type_b ? "i" : "", k ? "k" : "", c ? "c" : "", | |
209 | dc->rd, dc->ra, dc->rb); | |
210 | ||
40cbf5b7 EI |
211 | /* Take care of the easy cases first. */ |
212 | if (k) { | |
213 | /* k - keep carry, no need to update MSR. */ | |
214 | /* If rd == r0, it's a nop. */ | |
215 | if (dc->rd) { | |
216 | tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc))); | |
217 | ||
218 | if (c) { | |
219 | /* c - Add carry into the result. */ | |
220 | cf = tcg_temp_new(); | |
221 | ||
222 | read_carry(dc, cf); | |
223 | tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf); | |
224 | tcg_temp_free(cf); | |
225 | } | |
226 | } | |
227 | return; | |
228 | } | |
229 | ||
230 | /* From now on, we can assume k is zero. So we need to update MSR. */ | |
231 | /* Extract carry. */ | |
232 | cf = tcg_temp_new(); | |
233 | if (c) { | |
234 | read_carry(dc, cf); | |
235 | } else { | |
236 | tcg_gen_movi_tl(cf, 0); | |
237 | } | |
238 | ||
239 | if (dc->rd) { | |
240 | TCGv ncf = tcg_temp_new(); | |
5d0bb823 | 241 | gen_helper_carry(ncf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf); |
4acb54ba | 242 | tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc))); |
40cbf5b7 EI |
243 | tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf); |
244 | write_carry(dc, ncf); | |
245 | tcg_temp_free(ncf); | |
246 | } else { | |
5d0bb823 | 247 | gen_helper_carry(cf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf); |
40cbf5b7 | 248 | write_carry(dc, cf); |
4acb54ba | 249 | } |
40cbf5b7 | 250 | tcg_temp_free(cf); |
4acb54ba EI |
251 | } |
252 | ||
253 | static void dec_sub(DisasContext *dc) | |
254 | { | |
255 | unsigned int u, cmp, k, c; | |
e0a42ebc | 256 | TCGv cf, na; |
4acb54ba EI |
257 | |
258 | u = dc->imm & 2; | |
259 | k = dc->opcode & 4; | |
260 | c = dc->opcode & 2; | |
261 | cmp = (dc->imm & 1) && (!dc->type_b) && k; | |
262 | ||
263 | if (cmp) { | |
264 | LOG_DIS("cmp%s r%d, r%d ir=%x\n", u ? "u" : "", dc->rd, dc->ra, dc->ir); | |
265 | if (dc->rd) { | |
266 | if (u) | |
267 | gen_helper_cmpu(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]); | |
268 | else | |
269 | gen_helper_cmp(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]); | |
270 | } | |
e0a42ebc EI |
271 | return; |
272 | } | |
273 | ||
274 | LOG_DIS("sub%s%s r%d, r%d r%d\n", | |
275 | k ? "k" : "", c ? "c" : "", dc->rd, dc->ra, dc->rb); | |
276 | ||
277 | /* Take care of the easy cases first. */ | |
278 | if (k) { | |
279 | /* k - keep carry, no need to update MSR. */ | |
280 | /* If rd == r0, it's a nop. */ | |
281 | if (dc->rd) { | |
4acb54ba | 282 | tcg_gen_sub_tl(cpu_R[dc->rd], *(dec_alu_op_b(dc)), cpu_R[dc->ra]); |
e0a42ebc EI |
283 | |
284 | if (c) { | |
285 | /* c - Add carry into the result. */ | |
286 | cf = tcg_temp_new(); | |
287 | ||
288 | read_carry(dc, cf); | |
289 | tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf); | |
290 | tcg_temp_free(cf); | |
291 | } | |
292 | } | |
293 | return; | |
294 | } | |
295 | ||
296 | /* From now on, we can assume k is zero. So we need to update MSR. */ | |
297 | /* Extract carry. And complement a into na. */ | |
298 | cf = tcg_temp_new(); | |
299 | na = tcg_temp_new(); | |
300 | if (c) { | |
301 | read_carry(dc, cf); | |
302 | } else { | |
303 | tcg_gen_movi_tl(cf, 1); | |
304 | } | |
305 | ||
306 | /* d = b + ~a + c. carry defaults to 1. */ | |
307 | tcg_gen_not_tl(na, cpu_R[dc->ra]); | |
308 | ||
309 | if (dc->rd) { | |
310 | TCGv ncf = tcg_temp_new(); | |
5d0bb823 | 311 | gen_helper_carry(ncf, na, *(dec_alu_op_b(dc)), cf); |
e0a42ebc EI |
312 | tcg_gen_add_tl(cpu_R[dc->rd], na, *(dec_alu_op_b(dc))); |
313 | tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf); | |
314 | write_carry(dc, ncf); | |
315 | tcg_temp_free(ncf); | |
316 | } else { | |
5d0bb823 | 317 | gen_helper_carry(cf, na, *(dec_alu_op_b(dc)), cf); |
e0a42ebc | 318 | write_carry(dc, cf); |
4acb54ba | 319 | } |
e0a42ebc EI |
320 | tcg_temp_free(cf); |
321 | tcg_temp_free(na); | |
4acb54ba EI |
322 | } |
323 | ||
324 | static void dec_pattern(DisasContext *dc) | |
325 | { | |
326 | unsigned int mode; | |
327 | int l1; | |
328 | ||
1567a005 | 329 | if ((dc->tb_flags & MSR_EE_FLAG) |
97f90cbf | 330 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) |
1567a005 EI |
331 | && !((dc->env->pvr.regs[2] & PVR2_USE_PCMP_INSTR))) { |
332 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); | |
333 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
334 | } | |
335 | ||
4acb54ba EI |
336 | mode = dc->opcode & 3; |
337 | switch (mode) { | |
338 | case 0: | |
339 | /* pcmpbf. */ | |
340 | LOG_DIS("pcmpbf r%d r%d r%d\n", dc->rd, dc->ra, dc->rb); | |
341 | if (dc->rd) | |
342 | gen_helper_pcmpbf(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]); | |
343 | break; | |
344 | case 2: | |
345 | LOG_DIS("pcmpeq r%d r%d r%d\n", dc->rd, dc->ra, dc->rb); | |
346 | if (dc->rd) { | |
347 | TCGv t0 = tcg_temp_local_new(); | |
348 | l1 = gen_new_label(); | |
349 | tcg_gen_movi_tl(t0, 1); | |
350 | tcg_gen_brcond_tl(TCG_COND_EQ, | |
351 | cpu_R[dc->ra], cpu_R[dc->rb], l1); | |
352 | tcg_gen_movi_tl(t0, 0); | |
353 | gen_set_label(l1); | |
354 | tcg_gen_mov_tl(cpu_R[dc->rd], t0); | |
355 | tcg_temp_free(t0); | |
356 | } | |
357 | break; | |
358 | case 3: | |
359 | LOG_DIS("pcmpne r%d r%d r%d\n", dc->rd, dc->ra, dc->rb); | |
360 | l1 = gen_new_label(); | |
361 | if (dc->rd) { | |
362 | TCGv t0 = tcg_temp_local_new(); | |
363 | tcg_gen_movi_tl(t0, 1); | |
364 | tcg_gen_brcond_tl(TCG_COND_NE, | |
365 | cpu_R[dc->ra], cpu_R[dc->rb], l1); | |
366 | tcg_gen_movi_tl(t0, 0); | |
367 | gen_set_label(l1); | |
368 | tcg_gen_mov_tl(cpu_R[dc->rd], t0); | |
369 | tcg_temp_free(t0); | |
370 | } | |
371 | break; | |
372 | default: | |
373 | cpu_abort(dc->env, | |
374 | "unsupported pattern insn opcode=%x\n", dc->opcode); | |
375 | break; | |
376 | } | |
377 | } | |
378 | ||
379 | static void dec_and(DisasContext *dc) | |
380 | { | |
381 | unsigned int not; | |
382 | ||
383 | if (!dc->type_b && (dc->imm & (1 << 10))) { | |
384 | dec_pattern(dc); | |
385 | return; | |
386 | } | |
387 | ||
388 | not = dc->opcode & (1 << 1); | |
389 | LOG_DIS("and%s\n", not ? "n" : ""); | |
390 | ||
391 | if (!dc->rd) | |
392 | return; | |
393 | ||
394 | if (not) { | |
a235900e | 395 | tcg_gen_andc_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc))); |
4acb54ba EI |
396 | } else |
397 | tcg_gen_and_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc))); | |
398 | } | |
399 | ||
400 | static void dec_or(DisasContext *dc) | |
401 | { | |
402 | if (!dc->type_b && (dc->imm & (1 << 10))) { | |
403 | dec_pattern(dc); | |
404 | return; | |
405 | } | |
406 | ||
407 | LOG_DIS("or r%d r%d r%d imm=%x\n", dc->rd, dc->ra, dc->rb, dc->imm); | |
408 | if (dc->rd) | |
409 | tcg_gen_or_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc))); | |
410 | } | |
411 | ||
412 | static void dec_xor(DisasContext *dc) | |
413 | { | |
414 | if (!dc->type_b && (dc->imm & (1 << 10))) { | |
415 | dec_pattern(dc); | |
416 | return; | |
417 | } | |
418 | ||
419 | LOG_DIS("xor r%d\n", dc->rd); | |
420 | if (dc->rd) | |
421 | tcg_gen_xor_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc))); | |
422 | } | |
423 | ||
4acb54ba EI |
424 | static inline void msr_read(DisasContext *dc, TCGv d) |
425 | { | |
426 | tcg_gen_mov_tl(d, cpu_SR[SR_MSR]); | |
427 | } | |
428 | ||
429 | static inline void msr_write(DisasContext *dc, TCGv v) | |
430 | { | |
97b833c5 EI |
431 | TCGv t; |
432 | ||
433 | t = tcg_temp_new(); | |
4acb54ba | 434 | dc->cpustate_changed = 1; |
97b833c5 | 435 | /* PVR bit is not writable. */ |
8a84fc6b EI |
436 | tcg_gen_andi_tl(t, v, ~MSR_PVR); |
437 | tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], MSR_PVR); | |
97b833c5 EI |
438 | tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], v); |
439 | tcg_temp_free(t); | |
4acb54ba EI |
440 | } |
441 | ||
442 | static void dec_msr(DisasContext *dc) | |
443 | { | |
444 | TCGv t0, t1; | |
445 | unsigned int sr, to, rn; | |
1567a005 | 446 | int mem_index = cpu_mmu_index(dc->env); |
4acb54ba EI |
447 | |
448 | sr = dc->imm & ((1 << 14) - 1); | |
449 | to = dc->imm & (1 << 14); | |
450 | dc->type_b = 1; | |
451 | if (to) | |
452 | dc->cpustate_changed = 1; | |
453 | ||
454 | /* msrclr and msrset. */ | |
455 | if (!(dc->imm & (1 << 15))) { | |
456 | unsigned int clr = dc->ir & (1 << 16); | |
457 | ||
458 | LOG_DIS("msr%s r%d imm=%x\n", clr ? "clr" : "set", | |
459 | dc->rd, dc->imm); | |
1567a005 EI |
460 | |
461 | if (!(dc->env->pvr.regs[2] & PVR2_USE_MSR_INSTR)) { | |
462 | /* nop??? */ | |
463 | return; | |
464 | } | |
465 | ||
466 | if ((dc->tb_flags & MSR_EE_FLAG) | |
467 | && mem_index == MMU_USER_IDX && (dc->imm != 4 && dc->imm != 0)) { | |
468 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
469 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
470 | return; | |
471 | } | |
472 | ||
4acb54ba EI |
473 | if (dc->rd) |
474 | msr_read(dc, cpu_R[dc->rd]); | |
475 | ||
476 | t0 = tcg_temp_new(); | |
477 | t1 = tcg_temp_new(); | |
478 | msr_read(dc, t0); | |
479 | tcg_gen_mov_tl(t1, *(dec_alu_op_b(dc))); | |
480 | ||
481 | if (clr) { | |
482 | tcg_gen_not_tl(t1, t1); | |
483 | tcg_gen_and_tl(t0, t0, t1); | |
484 | } else | |
485 | tcg_gen_or_tl(t0, t0, t1); | |
486 | msr_write(dc, t0); | |
487 | tcg_temp_free(t0); | |
488 | tcg_temp_free(t1); | |
489 | tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc + 4); | |
490 | dc->is_jmp = DISAS_UPDATE; | |
491 | return; | |
492 | } | |
493 | ||
1567a005 EI |
494 | if (to) { |
495 | if ((dc->tb_flags & MSR_EE_FLAG) | |
496 | && mem_index == MMU_USER_IDX) { | |
497 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
498 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
499 | return; | |
500 | } | |
501 | } | |
502 | ||
4acb54ba EI |
503 | #if !defined(CONFIG_USER_ONLY) |
504 | /* Catch read/writes to the mmu block. */ | |
505 | if ((sr & ~0xff) == 0x1000) { | |
506 | sr &= 7; | |
507 | LOG_DIS("m%ss sr%d r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm); | |
508 | if (to) | |
64254eba | 509 | gen_helper_mmu_write(cpu_env, tcg_const_tl(sr), cpu_R[dc->ra]); |
4acb54ba | 510 | else |
64254eba | 511 | gen_helper_mmu_read(cpu_R[dc->rd], cpu_env, tcg_const_tl(sr)); |
4acb54ba EI |
512 | return; |
513 | } | |
514 | #endif | |
515 | ||
516 | if (to) { | |
517 | LOG_DIS("m%ss sr%x r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm); | |
518 | switch (sr) { | |
519 | case 0: | |
520 | break; | |
521 | case 1: | |
522 | msr_write(dc, cpu_R[dc->ra]); | |
523 | break; | |
524 | case 0x3: | |
525 | tcg_gen_mov_tl(cpu_SR[SR_EAR], cpu_R[dc->ra]); | |
526 | break; | |
527 | case 0x5: | |
528 | tcg_gen_mov_tl(cpu_SR[SR_ESR], cpu_R[dc->ra]); | |
529 | break; | |
530 | case 0x7: | |
97694c57 | 531 | tcg_gen_andi_tl(cpu_SR[SR_FSR], cpu_R[dc->ra], 31); |
4acb54ba | 532 | break; |
5818dee5 | 533 | case 0x800: |
68cee38a | 534 | tcg_gen_st_tl(cpu_R[dc->ra], cpu_env, offsetof(CPUMBState, slr)); |
5818dee5 EI |
535 | break; |
536 | case 0x802: | |
68cee38a | 537 | tcg_gen_st_tl(cpu_R[dc->ra], cpu_env, offsetof(CPUMBState, shr)); |
5818dee5 | 538 | break; |
4acb54ba EI |
539 | default: |
540 | cpu_abort(dc->env, "unknown mts reg %x\n", sr); | |
541 | break; | |
542 | } | |
543 | } else { | |
544 | LOG_DIS("m%ss r%d sr%x imm=%x\n", to ? "t" : "f", dc->rd, sr, dc->imm); | |
545 | ||
546 | switch (sr) { | |
547 | case 0: | |
548 | tcg_gen_movi_tl(cpu_R[dc->rd], dc->pc); | |
549 | break; | |
550 | case 1: | |
551 | msr_read(dc, cpu_R[dc->rd]); | |
552 | break; | |
553 | case 0x3: | |
554 | tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_EAR]); | |
555 | break; | |
556 | case 0x5: | |
557 | tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_ESR]); | |
558 | break; | |
559 | case 0x7: | |
97694c57 | 560 | tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_FSR]); |
4acb54ba EI |
561 | break; |
562 | case 0xb: | |
563 | tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_BTR]); | |
564 | break; | |
5818dee5 | 565 | case 0x800: |
68cee38a | 566 | tcg_gen_ld_tl(cpu_R[dc->rd], cpu_env, offsetof(CPUMBState, slr)); |
5818dee5 EI |
567 | break; |
568 | case 0x802: | |
68cee38a | 569 | tcg_gen_ld_tl(cpu_R[dc->rd], cpu_env, offsetof(CPUMBState, shr)); |
5818dee5 | 570 | break; |
4acb54ba EI |
571 | case 0x2000: |
572 | case 0x2001: | |
573 | case 0x2002: | |
574 | case 0x2003: | |
575 | case 0x2004: | |
576 | case 0x2005: | |
577 | case 0x2006: | |
578 | case 0x2007: | |
579 | case 0x2008: | |
580 | case 0x2009: | |
581 | case 0x200a: | |
582 | case 0x200b: | |
583 | case 0x200c: | |
584 | rn = sr & 0xf; | |
585 | tcg_gen_ld_tl(cpu_R[dc->rd], | |
68cee38a | 586 | cpu_env, offsetof(CPUMBState, pvr.regs[rn])); |
4acb54ba EI |
587 | break; |
588 | default: | |
589 | cpu_abort(dc->env, "unknown mfs reg %x\n", sr); | |
590 | break; | |
591 | } | |
592 | } | |
ee7dbcf8 EI |
593 | |
594 | if (dc->rd == 0) { | |
595 | tcg_gen_movi_tl(cpu_R[0], 0); | |
596 | } | |
4acb54ba EI |
597 | } |
598 | ||
599 | /* 64-bit signed mul, lower result in d and upper in d2. */ | |
600 | static void t_gen_muls(TCGv d, TCGv d2, TCGv a, TCGv b) | |
601 | { | |
602 | TCGv_i64 t0, t1; | |
603 | ||
604 | t0 = tcg_temp_new_i64(); | |
605 | t1 = tcg_temp_new_i64(); | |
606 | ||
607 | tcg_gen_ext_i32_i64(t0, a); | |
608 | tcg_gen_ext_i32_i64(t1, b); | |
609 | tcg_gen_mul_i64(t0, t0, t1); | |
610 | ||
611 | tcg_gen_trunc_i64_i32(d, t0); | |
612 | tcg_gen_shri_i64(t0, t0, 32); | |
613 | tcg_gen_trunc_i64_i32(d2, t0); | |
614 | ||
615 | tcg_temp_free_i64(t0); | |
616 | tcg_temp_free_i64(t1); | |
617 | } | |
618 | ||
619 | /* 64-bit unsigned muls, lower result in d and upper in d2. */ | |
620 | static void t_gen_mulu(TCGv d, TCGv d2, TCGv a, TCGv b) | |
621 | { | |
622 | TCGv_i64 t0, t1; | |
623 | ||
624 | t0 = tcg_temp_new_i64(); | |
625 | t1 = tcg_temp_new_i64(); | |
626 | ||
627 | tcg_gen_extu_i32_i64(t0, a); | |
628 | tcg_gen_extu_i32_i64(t1, b); | |
629 | tcg_gen_mul_i64(t0, t0, t1); | |
630 | ||
631 | tcg_gen_trunc_i64_i32(d, t0); | |
632 | tcg_gen_shri_i64(t0, t0, 32); | |
633 | tcg_gen_trunc_i64_i32(d2, t0); | |
634 | ||
635 | tcg_temp_free_i64(t0); | |
636 | tcg_temp_free_i64(t1); | |
637 | } | |
638 | ||
639 | /* Multiplier unit. */ | |
640 | static void dec_mul(DisasContext *dc) | |
641 | { | |
642 | TCGv d[2]; | |
643 | unsigned int subcode; | |
644 | ||
1567a005 | 645 | if ((dc->tb_flags & MSR_EE_FLAG) |
97f90cbf | 646 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) |
1567a005 EI |
647 | && !(dc->env->pvr.regs[0] & PVR0_USE_HW_MUL_MASK)) { |
648 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); | |
649 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
650 | return; | |
651 | } | |
652 | ||
4acb54ba EI |
653 | subcode = dc->imm & 3; |
654 | d[0] = tcg_temp_new(); | |
655 | d[1] = tcg_temp_new(); | |
656 | ||
657 | if (dc->type_b) { | |
658 | LOG_DIS("muli r%d r%d %x\n", dc->rd, dc->ra, dc->imm); | |
659 | t_gen_mulu(cpu_R[dc->rd], d[1], cpu_R[dc->ra], *(dec_alu_op_b(dc))); | |
660 | goto done; | |
661 | } | |
662 | ||
1567a005 EI |
663 | /* mulh, mulhsu and mulhu are not available if C_USE_HW_MUL is < 2. */ |
664 | if (subcode >= 1 && subcode <= 3 | |
665 | && !((dc->env->pvr.regs[2] & PVR2_USE_MUL64_MASK))) { | |
666 | /* nop??? */ | |
667 | } | |
668 | ||
4acb54ba EI |
669 | switch (subcode) { |
670 | case 0: | |
671 | LOG_DIS("mul r%d r%d r%d\n", dc->rd, dc->ra, dc->rb); | |
672 | t_gen_mulu(cpu_R[dc->rd], d[1], cpu_R[dc->ra], cpu_R[dc->rb]); | |
673 | break; | |
674 | case 1: | |
675 | LOG_DIS("mulh r%d r%d r%d\n", dc->rd, dc->ra, dc->rb); | |
676 | t_gen_muls(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]); | |
677 | break; | |
678 | case 2: | |
679 | LOG_DIS("mulhsu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb); | |
680 | t_gen_muls(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]); | |
681 | break; | |
682 | case 3: | |
683 | LOG_DIS("mulhu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb); | |
684 | t_gen_mulu(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]); | |
685 | break; | |
686 | default: | |
687 | cpu_abort(dc->env, "unknown MUL insn %x\n", subcode); | |
688 | break; | |
689 | } | |
690 | done: | |
691 | tcg_temp_free(d[0]); | |
692 | tcg_temp_free(d[1]); | |
693 | } | |
694 | ||
695 | /* Div unit. */ | |
696 | static void dec_div(DisasContext *dc) | |
697 | { | |
698 | unsigned int u; | |
699 | ||
700 | u = dc->imm & 2; | |
701 | LOG_DIS("div\n"); | |
702 | ||
97f90cbf | 703 | if ((dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) |
1567a005 EI |
704 | && !((dc->env->pvr.regs[0] & PVR0_USE_DIV_MASK))) { |
705 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); | |
706 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
707 | } | |
708 | ||
4acb54ba | 709 | if (u) |
64254eba BS |
710 | gen_helper_divu(cpu_R[dc->rd], cpu_env, *(dec_alu_op_b(dc)), |
711 | cpu_R[dc->ra]); | |
4acb54ba | 712 | else |
64254eba BS |
713 | gen_helper_divs(cpu_R[dc->rd], cpu_env, *(dec_alu_op_b(dc)), |
714 | cpu_R[dc->ra]); | |
4acb54ba EI |
715 | if (!dc->rd) |
716 | tcg_gen_movi_tl(cpu_R[dc->rd], 0); | |
717 | } | |
718 | ||
719 | static void dec_barrel(DisasContext *dc) | |
720 | { | |
721 | TCGv t0; | |
722 | unsigned int s, t; | |
723 | ||
1567a005 | 724 | if ((dc->tb_flags & MSR_EE_FLAG) |
97f90cbf | 725 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) |
1567a005 EI |
726 | && !(dc->env->pvr.regs[0] & PVR0_USE_BARREL_MASK)) { |
727 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); | |
728 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
729 | return; | |
730 | } | |
731 | ||
4acb54ba EI |
732 | s = dc->imm & (1 << 10); |
733 | t = dc->imm & (1 << 9); | |
734 | ||
735 | LOG_DIS("bs%s%s r%d r%d r%d\n", | |
736 | s ? "l" : "r", t ? "a" : "l", dc->rd, dc->ra, dc->rb); | |
737 | ||
738 | t0 = tcg_temp_new(); | |
739 | ||
740 | tcg_gen_mov_tl(t0, *(dec_alu_op_b(dc))); | |
741 | tcg_gen_andi_tl(t0, t0, 31); | |
742 | ||
743 | if (s) | |
744 | tcg_gen_shl_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0); | |
745 | else { | |
746 | if (t) | |
747 | tcg_gen_sar_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0); | |
748 | else | |
749 | tcg_gen_shr_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0); | |
750 | } | |
751 | } | |
752 | ||
753 | static void dec_bit(DisasContext *dc) | |
754 | { | |
09b9f113 | 755 | TCGv t0; |
4acb54ba | 756 | unsigned int op; |
1567a005 | 757 | int mem_index = cpu_mmu_index(dc->env); |
4acb54ba | 758 | |
ace2e4da | 759 | op = dc->ir & ((1 << 9) - 1); |
4acb54ba EI |
760 | switch (op) { |
761 | case 0x21: | |
762 | /* src. */ | |
763 | t0 = tcg_temp_new(); | |
764 | ||
765 | LOG_DIS("src r%d r%d\n", dc->rd, dc->ra); | |
09b9f113 EI |
766 | tcg_gen_andi_tl(t0, cpu_SR[SR_MSR], MSR_CC); |
767 | write_carry(dc, cpu_R[dc->ra]); | |
4acb54ba | 768 | if (dc->rd) { |
4acb54ba | 769 | tcg_gen_shri_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1); |
09b9f113 | 770 | tcg_gen_or_tl(cpu_R[dc->rd], cpu_R[dc->rd], t0); |
4acb54ba | 771 | } |
4acb54ba EI |
772 | tcg_temp_free(t0); |
773 | break; | |
774 | ||
775 | case 0x1: | |
776 | case 0x41: | |
777 | /* srl. */ | |
4acb54ba EI |
778 | LOG_DIS("srl r%d r%d\n", dc->rd, dc->ra); |
779 | ||
bb3cb951 EI |
780 | /* Update carry. Note that write carry only looks at the LSB. */ |
781 | write_carry(dc, cpu_R[dc->ra]); | |
4acb54ba EI |
782 | if (dc->rd) { |
783 | if (op == 0x41) | |
784 | tcg_gen_shri_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1); | |
785 | else | |
786 | tcg_gen_sari_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1); | |
787 | } | |
788 | break; | |
789 | case 0x60: | |
790 | LOG_DIS("ext8s r%d r%d\n", dc->rd, dc->ra); | |
791 | tcg_gen_ext8s_i32(cpu_R[dc->rd], cpu_R[dc->ra]); | |
792 | break; | |
793 | case 0x61: | |
794 | LOG_DIS("ext16s r%d r%d\n", dc->rd, dc->ra); | |
795 | tcg_gen_ext16s_i32(cpu_R[dc->rd], cpu_R[dc->ra]); | |
796 | break; | |
797 | case 0x64: | |
f062a3c7 EI |
798 | case 0x66: |
799 | case 0x74: | |
800 | case 0x76: | |
4acb54ba EI |
801 | /* wdc. */ |
802 | LOG_DIS("wdc r%d\n", dc->ra); | |
1567a005 EI |
803 | if ((dc->tb_flags & MSR_EE_FLAG) |
804 | && mem_index == MMU_USER_IDX) { | |
805 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
806 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
807 | return; | |
808 | } | |
4acb54ba EI |
809 | break; |
810 | case 0x68: | |
811 | /* wic. */ | |
812 | LOG_DIS("wic r%d\n", dc->ra); | |
1567a005 EI |
813 | if ((dc->tb_flags & MSR_EE_FLAG) |
814 | && mem_index == MMU_USER_IDX) { | |
815 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
816 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
817 | return; | |
818 | } | |
4acb54ba | 819 | break; |
48b5e96f EI |
820 | case 0xe0: |
821 | if ((dc->tb_flags & MSR_EE_FLAG) | |
822 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) | |
823 | && !((dc->env->pvr.regs[2] & PVR2_USE_PCMP_INSTR))) { | |
824 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); | |
825 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
826 | } | |
827 | if (dc->env->pvr.regs[2] & PVR2_USE_PCMP_INSTR) { | |
828 | gen_helper_clz(cpu_R[dc->rd], cpu_R[dc->ra]); | |
829 | } | |
830 | break; | |
ace2e4da PC |
831 | case 0x1e0: |
832 | /* swapb */ | |
833 | LOG_DIS("swapb r%d r%d\n", dc->rd, dc->ra); | |
834 | tcg_gen_bswap32_i32(cpu_R[dc->rd], cpu_R[dc->ra]); | |
835 | break; | |
b8c6a5d9 | 836 | case 0x1e2: |
ace2e4da PC |
837 | /*swaph */ |
838 | LOG_DIS("swaph r%d r%d\n", dc->rd, dc->ra); | |
839 | tcg_gen_rotri_i32(cpu_R[dc->rd], cpu_R[dc->ra], 16); | |
840 | break; | |
4acb54ba EI |
841 | default: |
842 | cpu_abort(dc->env, "unknown bit oc=%x op=%x rd=%d ra=%d rb=%d\n", | |
843 | dc->pc, op, dc->rd, dc->ra, dc->rb); | |
844 | break; | |
845 | } | |
846 | } | |
847 | ||
848 | static inline void sync_jmpstate(DisasContext *dc) | |
849 | { | |
844bab60 EI |
850 | if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) { |
851 | if (dc->jmp == JMP_DIRECT) { | |
852 | tcg_gen_movi_tl(env_btaken, 1); | |
853 | } | |
23979dc5 EI |
854 | dc->jmp = JMP_INDIRECT; |
855 | tcg_gen_movi_tl(env_btarget, dc->jmp_pc); | |
4acb54ba EI |
856 | } |
857 | } | |
858 | ||
859 | static void dec_imm(DisasContext *dc) | |
860 | { | |
861 | LOG_DIS("imm %x\n", dc->imm << 16); | |
862 | tcg_gen_movi_tl(env_imm, (dc->imm << 16)); | |
863 | dc->tb_flags |= IMM_FLAG; | |
864 | dc->clear_imm = 0; | |
865 | } | |
866 | ||
867 | static inline void gen_load(DisasContext *dc, TCGv dst, TCGv addr, | |
536446e9 | 868 | unsigned int size, bool exclusive) |
4acb54ba EI |
869 | { |
870 | int mem_index = cpu_mmu_index(dc->env); | |
871 | ||
872 | if (size == 1) { | |
873 | tcg_gen_qemu_ld8u(dst, addr, mem_index); | |
874 | } else if (size == 2) { | |
875 | tcg_gen_qemu_ld16u(dst, addr, mem_index); | |
876 | } else if (size == 4) { | |
877 | tcg_gen_qemu_ld32u(dst, addr, mem_index); | |
878 | } else | |
879 | cpu_abort(dc->env, "Incorrect load size %d\n", size); | |
536446e9 EI |
880 | |
881 | if (exclusive) { | |
4a536270 | 882 | tcg_gen_mov_tl(env_res_addr, addr); |
11a76217 | 883 | tcg_gen_mov_tl(env_res_val, dst); |
536446e9 | 884 | } |
4acb54ba EI |
885 | } |
886 | ||
887 | static inline TCGv *compute_ldst_addr(DisasContext *dc, TCGv *t) | |
888 | { | |
889 | unsigned int extimm = dc->tb_flags & IMM_FLAG; | |
5818dee5 EI |
890 | /* Should be set to one if r1 is used by loadstores. */ |
891 | int stackprot = 0; | |
892 | ||
893 | /* All load/stores use ra. */ | |
894 | if (dc->ra == 1) { | |
895 | stackprot = 1; | |
896 | } | |
4acb54ba | 897 | |
9ef55357 | 898 | /* Treat the common cases first. */ |
4acb54ba | 899 | if (!dc->type_b) { |
4b5ef0b5 EI |
900 | /* If any of the regs is r0, return a ptr to the other. */ |
901 | if (dc->ra == 0) { | |
902 | return &cpu_R[dc->rb]; | |
903 | } else if (dc->rb == 0) { | |
904 | return &cpu_R[dc->ra]; | |
905 | } | |
906 | ||
5818dee5 EI |
907 | if (dc->rb == 1) { |
908 | stackprot = 1; | |
909 | } | |
910 | ||
4acb54ba EI |
911 | *t = tcg_temp_new(); |
912 | tcg_gen_add_tl(*t, cpu_R[dc->ra], cpu_R[dc->rb]); | |
5818dee5 EI |
913 | |
914 | if (stackprot) { | |
64254eba | 915 | gen_helper_stackprot(cpu_env, *t); |
5818dee5 | 916 | } |
4acb54ba EI |
917 | return t; |
918 | } | |
919 | /* Immediate. */ | |
920 | if (!extimm) { | |
921 | if (dc->imm == 0) { | |
922 | return &cpu_R[dc->ra]; | |
923 | } | |
924 | *t = tcg_temp_new(); | |
925 | tcg_gen_movi_tl(*t, (int32_t)((int16_t)dc->imm)); | |
926 | tcg_gen_add_tl(*t, cpu_R[dc->ra], *t); | |
927 | } else { | |
928 | *t = tcg_temp_new(); | |
929 | tcg_gen_add_tl(*t, cpu_R[dc->ra], *(dec_alu_op_b(dc))); | |
930 | } | |
931 | ||
5818dee5 | 932 | if (stackprot) { |
64254eba | 933 | gen_helper_stackprot(cpu_env, *t); |
5818dee5 | 934 | } |
4acb54ba EI |
935 | return t; |
936 | } | |
937 | ||
9f8beb66 EI |
938 | static inline void dec_byteswap(DisasContext *dc, TCGv dst, TCGv src, int size) |
939 | { | |
940 | if (size == 4) { | |
941 | tcg_gen_bswap32_tl(dst, src); | |
942 | } else if (size == 2) { | |
943 | TCGv t = tcg_temp_new(); | |
944 | ||
945 | /* bswap16 assumes the high bits are zero. */ | |
946 | tcg_gen_andi_tl(t, src, 0xffff); | |
947 | tcg_gen_bswap16_tl(dst, t); | |
948 | tcg_temp_free(t); | |
949 | } else { | |
950 | /* Ignore. | |
951 | cpu_abort(dc->env, "Invalid ldst byteswap size %d\n", size); | |
952 | */ | |
953 | } | |
954 | } | |
955 | ||
4acb54ba EI |
956 | static void dec_load(DisasContext *dc) |
957 | { | |
958 | TCGv t, *addr; | |
8cc9b43f | 959 | unsigned int size, rev = 0, ex = 0; |
4acb54ba EI |
960 | |
961 | size = 1 << (dc->opcode & 3); | |
9f8beb66 EI |
962 | |
963 | if (!dc->type_b) { | |
964 | rev = (dc->ir >> 9) & 1; | |
8cc9b43f | 965 | ex = (dc->ir >> 10) & 1; |
9f8beb66 EI |
966 | } |
967 | ||
0187688f | 968 | if (size > 4 && (dc->tb_flags & MSR_EE_FLAG) |
97f90cbf | 969 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) { |
0187688f EI |
970 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); |
971 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
972 | return; | |
973 | } | |
4acb54ba | 974 | |
8cc9b43f PC |
975 | LOG_DIS("l%d%s%s%s\n", size, dc->type_b ? "i" : "", rev ? "r" : "", |
976 | ex ? "x" : ""); | |
9f8beb66 | 977 | |
4acb54ba EI |
978 | t_sync_flags(dc); |
979 | addr = compute_ldst_addr(dc, &t); | |
980 | ||
9f8beb66 EI |
981 | /* |
982 | * When doing reverse accesses we need to do two things. | |
983 | * | |
4ff9786c | 984 | * 1. Reverse the address wrt endianness. |
9f8beb66 EI |
985 | * 2. Byteswap the data lanes on the way back into the CPU core. |
986 | */ | |
987 | if (rev && size != 4) { | |
988 | /* Endian reverse the address. t is addr. */ | |
989 | switch (size) { | |
990 | case 1: | |
991 | { | |
992 | /* 00 -> 11 | |
993 | 01 -> 10 | |
994 | 10 -> 10 | |
995 | 11 -> 00 */ | |
996 | TCGv low = tcg_temp_new(); | |
997 | ||
998 | /* Force addr into the temp. */ | |
999 | if (addr != &t) { | |
1000 | t = tcg_temp_new(); | |
1001 | tcg_gen_mov_tl(t, *addr); | |
1002 | addr = &t; | |
1003 | } | |
1004 | ||
1005 | tcg_gen_andi_tl(low, t, 3); | |
1006 | tcg_gen_sub_tl(low, tcg_const_tl(3), low); | |
1007 | tcg_gen_andi_tl(t, t, ~3); | |
1008 | tcg_gen_or_tl(t, t, low); | |
9f8beb66 EI |
1009 | tcg_gen_mov_tl(env_imm, t); |
1010 | tcg_temp_free(low); | |
1011 | break; | |
1012 | } | |
1013 | ||
1014 | case 2: | |
1015 | /* 00 -> 10 | |
1016 | 10 -> 00. */ | |
1017 | /* Force addr into the temp. */ | |
1018 | if (addr != &t) { | |
1019 | t = tcg_temp_new(); | |
1020 | tcg_gen_xori_tl(t, *addr, 2); | |
1021 | addr = &t; | |
1022 | } else { | |
1023 | tcg_gen_xori_tl(t, t, 2); | |
1024 | } | |
1025 | break; | |
1026 | default: | |
1027 | cpu_abort(dc->env, "Invalid reverse size\n"); | |
1028 | break; | |
1029 | } | |
1030 | } | |
1031 | ||
8cc9b43f PC |
1032 | /* lwx does not throw unaligned access errors, so force alignment */ |
1033 | if (ex) { | |
1034 | /* Force addr into the temp. */ | |
1035 | if (addr != &t) { | |
1036 | t = tcg_temp_new(); | |
1037 | tcg_gen_mov_tl(t, *addr); | |
1038 | addr = &t; | |
1039 | } | |
1040 | tcg_gen_andi_tl(t, t, ~3); | |
1041 | } | |
1042 | ||
4acb54ba EI |
1043 | /* If we get a fault on a dslot, the jmpstate better be in sync. */ |
1044 | sync_jmpstate(dc); | |
968a40f6 EI |
1045 | |
1046 | /* Verify alignment if needed. */ | |
1047 | if ((dc->env->pvr.regs[2] & PVR2_UNALIGNED_EXC_MASK) && size > 1) { | |
a12f6507 EI |
1048 | TCGv v = tcg_temp_new(); |
1049 | ||
1050 | /* | |
1051 | * Microblaze gives MMU faults priority over faults due to | |
1052 | * unaligned addresses. That's why we speculatively do the load | |
1053 | * into v. If the load succeeds, we verify alignment of the | |
1054 | * address and if that succeeds we write into the destination reg. | |
1055 | */ | |
536446e9 | 1056 | gen_load(dc, v, *addr, size, ex); |
a12f6507 EI |
1057 | |
1058 | tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc); | |
64254eba | 1059 | gen_helper_memalign(cpu_env, *addr, tcg_const_tl(dc->rd), |
3aa80988 | 1060 | tcg_const_tl(0), tcg_const_tl(size - 1)); |
9f8beb66 EI |
1061 | if (dc->rd) { |
1062 | if (rev) { | |
1063 | dec_byteswap(dc, cpu_R[dc->rd], v, size); | |
1064 | } else { | |
1065 | tcg_gen_mov_tl(cpu_R[dc->rd], v); | |
1066 | } | |
1067 | } | |
a12f6507 | 1068 | tcg_temp_free(v); |
968a40f6 | 1069 | } else { |
a12f6507 | 1070 | if (dc->rd) { |
536446e9 | 1071 | gen_load(dc, cpu_R[dc->rd], *addr, size, ex); |
9f8beb66 EI |
1072 | if (rev) { |
1073 | dec_byteswap(dc, cpu_R[dc->rd], cpu_R[dc->rd], size); | |
1074 | } | |
a12f6507 | 1075 | } else { |
9f8beb66 | 1076 | /* We are loading into r0, no need to reverse. */ |
536446e9 | 1077 | gen_load(dc, env_imm, *addr, size, ex); |
a12f6507 | 1078 | } |
4acb54ba EI |
1079 | } |
1080 | ||
8cc9b43f PC |
1081 | if (ex) { /* lwx */ |
1082 | /* no support for for AXI exclusive so always clear C */ | |
1083 | write_carryi(dc, 0); | |
8cc9b43f PC |
1084 | } |
1085 | ||
4acb54ba EI |
1086 | if (addr == &t) |
1087 | tcg_temp_free(t); | |
1088 | } | |
1089 | ||
1090 | static void gen_store(DisasContext *dc, TCGv addr, TCGv val, | |
1091 | unsigned int size) | |
1092 | { | |
1093 | int mem_index = cpu_mmu_index(dc->env); | |
1094 | ||
1095 | if (size == 1) | |
1096 | tcg_gen_qemu_st8(val, addr, mem_index); | |
1097 | else if (size == 2) { | |
1098 | tcg_gen_qemu_st16(val, addr, mem_index); | |
1099 | } else if (size == 4) { | |
1100 | tcg_gen_qemu_st32(val, addr, mem_index); | |
1101 | } else | |
1102 | cpu_abort(dc->env, "Incorrect store size %d\n", size); | |
1103 | } | |
1104 | ||
1105 | static void dec_store(DisasContext *dc) | |
1106 | { | |
4a536270 | 1107 | TCGv t, *addr, swx_addr; |
8cc9b43f PC |
1108 | int swx_skip = 0; |
1109 | unsigned int size, rev = 0, ex = 0; | |
4acb54ba EI |
1110 | |
1111 | size = 1 << (dc->opcode & 3); | |
9f8beb66 EI |
1112 | if (!dc->type_b) { |
1113 | rev = (dc->ir >> 9) & 1; | |
8cc9b43f | 1114 | ex = (dc->ir >> 10) & 1; |
9f8beb66 | 1115 | } |
4acb54ba | 1116 | |
0187688f | 1117 | if (size > 4 && (dc->tb_flags & MSR_EE_FLAG) |
97f90cbf | 1118 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) { |
0187688f EI |
1119 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); |
1120 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1121 | return; | |
1122 | } | |
1123 | ||
8cc9b43f PC |
1124 | LOG_DIS("s%d%s%s%s\n", size, dc->type_b ? "i" : "", rev ? "r" : "", |
1125 | ex ? "x" : ""); | |
4acb54ba EI |
1126 | t_sync_flags(dc); |
1127 | /* If we get a fault on a dslot, the jmpstate better be in sync. */ | |
1128 | sync_jmpstate(dc); | |
1129 | addr = compute_ldst_addr(dc, &t); | |
968a40f6 | 1130 | |
083dbf48 | 1131 | swx_addr = tcg_temp_local_new(); |
8cc9b43f | 1132 | if (ex) { /* swx */ |
11a76217 | 1133 | TCGv tval; |
8cc9b43f PC |
1134 | |
1135 | /* Force addr into the swx_addr. */ | |
1136 | tcg_gen_mov_tl(swx_addr, *addr); | |
1137 | addr = &swx_addr; | |
1138 | /* swx does not throw unaligned access errors, so force alignment */ | |
1139 | tcg_gen_andi_tl(swx_addr, swx_addr, ~3); | |
1140 | ||
8cc9b43f PC |
1141 | write_carryi(dc, 1); |
1142 | swx_skip = gen_new_label(); | |
4a536270 | 1143 | tcg_gen_brcond_tl(TCG_COND_NE, env_res_addr, swx_addr, swx_skip); |
11a76217 EI |
1144 | |
1145 | /* Compare the value loaded at lwx with current contents of | |
1146 | the reserved location. | |
1147 | FIXME: This only works for system emulation where we can expect | |
1148 | this compare and the following write to be atomic. For user | |
1149 | emulation we need to add atomicity between threads. */ | |
1150 | tval = tcg_temp_new(); | |
1151 | gen_load(dc, tval, swx_addr, 4, false); | |
1152 | tcg_gen_brcond_tl(TCG_COND_NE, env_res_val, tval, swx_skip); | |
8cc9b43f | 1153 | write_carryi(dc, 0); |
11a76217 | 1154 | tcg_temp_free(tval); |
8cc9b43f PC |
1155 | } |
1156 | ||
9f8beb66 EI |
1157 | if (rev && size != 4) { |
1158 | /* Endian reverse the address. t is addr. */ | |
1159 | switch (size) { | |
1160 | case 1: | |
1161 | { | |
1162 | /* 00 -> 11 | |
1163 | 01 -> 10 | |
1164 | 10 -> 10 | |
1165 | 11 -> 00 */ | |
1166 | TCGv low = tcg_temp_new(); | |
1167 | ||
1168 | /* Force addr into the temp. */ | |
1169 | if (addr != &t) { | |
1170 | t = tcg_temp_new(); | |
1171 | tcg_gen_mov_tl(t, *addr); | |
1172 | addr = &t; | |
1173 | } | |
1174 | ||
1175 | tcg_gen_andi_tl(low, t, 3); | |
1176 | tcg_gen_sub_tl(low, tcg_const_tl(3), low); | |
1177 | tcg_gen_andi_tl(t, t, ~3); | |
1178 | tcg_gen_or_tl(t, t, low); | |
9f8beb66 EI |
1179 | tcg_gen_mov_tl(env_imm, t); |
1180 | tcg_temp_free(low); | |
1181 | break; | |
1182 | } | |
1183 | ||
1184 | case 2: | |
1185 | /* 00 -> 10 | |
1186 | 10 -> 00. */ | |
1187 | /* Force addr into the temp. */ | |
1188 | if (addr != &t) { | |
1189 | t = tcg_temp_new(); | |
1190 | tcg_gen_xori_tl(t, *addr, 2); | |
1191 | addr = &t; | |
1192 | } else { | |
1193 | tcg_gen_xori_tl(t, t, 2); | |
1194 | } | |
1195 | break; | |
1196 | default: | |
1197 | cpu_abort(dc->env, "Invalid reverse size\n"); | |
1198 | break; | |
1199 | } | |
1200 | ||
1201 | if (size != 1) { | |
1202 | TCGv bs_data = tcg_temp_new(); | |
1203 | dec_byteswap(dc, bs_data, cpu_R[dc->rd], size); | |
1204 | gen_store(dc, *addr, bs_data, size); | |
1205 | tcg_temp_free(bs_data); | |
1206 | } else { | |
1207 | gen_store(dc, *addr, cpu_R[dc->rd], size); | |
1208 | } | |
1209 | } else { | |
1210 | if (rev) { | |
1211 | TCGv bs_data = tcg_temp_new(); | |
1212 | dec_byteswap(dc, bs_data, cpu_R[dc->rd], size); | |
1213 | gen_store(dc, *addr, bs_data, size); | |
1214 | tcg_temp_free(bs_data); | |
1215 | } else { | |
1216 | gen_store(dc, *addr, cpu_R[dc->rd], size); | |
1217 | } | |
1218 | } | |
a12f6507 | 1219 | |
968a40f6 EI |
1220 | /* Verify alignment if needed. */ |
1221 | if ((dc->env->pvr.regs[2] & PVR2_UNALIGNED_EXC_MASK) && size > 1) { | |
a12f6507 EI |
1222 | tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc); |
1223 | /* FIXME: if the alignment is wrong, we should restore the value | |
4abf79a4 | 1224 | * in memory. One possible way to achieve this is to probe |
9f8beb66 EI |
1225 | * the MMU prior to the memaccess, thay way we could put |
1226 | * the alignment checks in between the probe and the mem | |
1227 | * access. | |
a12f6507 | 1228 | */ |
64254eba | 1229 | gen_helper_memalign(cpu_env, *addr, tcg_const_tl(dc->rd), |
3aa80988 | 1230 | tcg_const_tl(1), tcg_const_tl(size - 1)); |
968a40f6 | 1231 | } |
083dbf48 | 1232 | |
8cc9b43f PC |
1233 | if (ex) { |
1234 | gen_set_label(swx_skip); | |
8cc9b43f | 1235 | } |
083dbf48 | 1236 | tcg_temp_free(swx_addr); |
968a40f6 | 1237 | |
4acb54ba EI |
1238 | if (addr == &t) |
1239 | tcg_temp_free(t); | |
1240 | } | |
1241 | ||
1242 | static inline void eval_cc(DisasContext *dc, unsigned int cc, | |
1243 | TCGv d, TCGv a, TCGv b) | |
1244 | { | |
4acb54ba EI |
1245 | switch (cc) { |
1246 | case CC_EQ: | |
b2565c69 | 1247 | tcg_gen_setcond_tl(TCG_COND_EQ, d, a, b); |
4acb54ba EI |
1248 | break; |
1249 | case CC_NE: | |
b2565c69 | 1250 | tcg_gen_setcond_tl(TCG_COND_NE, d, a, b); |
4acb54ba EI |
1251 | break; |
1252 | case CC_LT: | |
b2565c69 | 1253 | tcg_gen_setcond_tl(TCG_COND_LT, d, a, b); |
4acb54ba EI |
1254 | break; |
1255 | case CC_LE: | |
b2565c69 | 1256 | tcg_gen_setcond_tl(TCG_COND_LE, d, a, b); |
4acb54ba EI |
1257 | break; |
1258 | case CC_GE: | |
b2565c69 | 1259 | tcg_gen_setcond_tl(TCG_COND_GE, d, a, b); |
4acb54ba EI |
1260 | break; |
1261 | case CC_GT: | |
b2565c69 | 1262 | tcg_gen_setcond_tl(TCG_COND_GT, d, a, b); |
4acb54ba EI |
1263 | break; |
1264 | default: | |
1265 | cpu_abort(dc->env, "Unknown condition code %x.\n", cc); | |
1266 | break; | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | static void eval_cond_jmp(DisasContext *dc, TCGv pc_true, TCGv pc_false) | |
1271 | { | |
1272 | int l1; | |
1273 | ||
1274 | l1 = gen_new_label(); | |
1275 | /* Conditional jmp. */ | |
1276 | tcg_gen_mov_tl(cpu_SR[SR_PC], pc_false); | |
1277 | tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1); | |
1278 | tcg_gen_mov_tl(cpu_SR[SR_PC], pc_true); | |
1279 | gen_set_label(l1); | |
1280 | } | |
1281 | ||
1282 | static void dec_bcc(DisasContext *dc) | |
1283 | { | |
1284 | unsigned int cc; | |
1285 | unsigned int dslot; | |
1286 | ||
1287 | cc = EXTRACT_FIELD(dc->ir, 21, 23); | |
1288 | dslot = dc->ir & (1 << 25); | |
1289 | LOG_DIS("bcc%s r%d %x\n", dslot ? "d" : "", dc->ra, dc->imm); | |
1290 | ||
1291 | dc->delayed_branch = 1; | |
1292 | if (dslot) { | |
1293 | dc->delayed_branch = 2; | |
1294 | dc->tb_flags |= D_FLAG; | |
1295 | tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)), | |
68cee38a | 1296 | cpu_env, offsetof(CPUMBState, bimm)); |
4acb54ba EI |
1297 | } |
1298 | ||
61204ce8 EI |
1299 | if (dec_alu_op_b_is_small_imm(dc)) { |
1300 | int32_t offset = (int32_t)((int16_t)dc->imm); /* sign-extend. */ | |
1301 | ||
1302 | tcg_gen_movi_tl(env_btarget, dc->pc + offset); | |
844bab60 | 1303 | dc->jmp = JMP_DIRECT_CC; |
23979dc5 | 1304 | dc->jmp_pc = dc->pc + offset; |
61204ce8 | 1305 | } else { |
23979dc5 | 1306 | dc->jmp = JMP_INDIRECT; |
61204ce8 EI |
1307 | tcg_gen_movi_tl(env_btarget, dc->pc); |
1308 | tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc))); | |
1309 | } | |
61204ce8 | 1310 | eval_cc(dc, cc, env_btaken, cpu_R[dc->ra], tcg_const_tl(0)); |
4acb54ba EI |
1311 | } |
1312 | ||
1313 | static void dec_br(DisasContext *dc) | |
1314 | { | |
9f6113c7 | 1315 | unsigned int dslot, link, abs, mbar; |
ff21f70a | 1316 | int mem_index = cpu_mmu_index(dc->env); |
4acb54ba EI |
1317 | |
1318 | dslot = dc->ir & (1 << 20); | |
1319 | abs = dc->ir & (1 << 19); | |
1320 | link = dc->ir & (1 << 18); | |
9f6113c7 EI |
1321 | |
1322 | /* Memory barrier. */ | |
1323 | mbar = (dc->ir >> 16) & 31; | |
1324 | if (mbar == 2 && dc->imm == 4) { | |
5d45de97 EI |
1325 | /* mbar IMM & 16 decodes to sleep. */ |
1326 | if (dc->rd & 16) { | |
1327 | TCGv_i32 tmp_hlt = tcg_const_i32(EXCP_HLT); | |
1328 | TCGv_i32 tmp_1 = tcg_const_i32(1); | |
1329 | ||
1330 | LOG_DIS("sleep\n"); | |
1331 | ||
1332 | t_sync_flags(dc); | |
1333 | tcg_gen_st_i32(tmp_1, cpu_env, | |
1334 | -offsetof(MicroBlazeCPU, env) | |
1335 | +offsetof(CPUState, halted)); | |
1336 | tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc + 4); | |
1337 | gen_helper_raise_exception(cpu_env, tmp_hlt); | |
1338 | tcg_temp_free_i32(tmp_hlt); | |
1339 | tcg_temp_free_i32(tmp_1); | |
1340 | return; | |
1341 | } | |
9f6113c7 EI |
1342 | LOG_DIS("mbar %d\n", dc->rd); |
1343 | /* Break the TB. */ | |
1344 | dc->cpustate_changed = 1; | |
1345 | return; | |
1346 | } | |
1347 | ||
4acb54ba EI |
1348 | LOG_DIS("br%s%s%s%s imm=%x\n", |
1349 | abs ? "a" : "", link ? "l" : "", | |
1350 | dc->type_b ? "i" : "", dslot ? "d" : "", | |
1351 | dc->imm); | |
1352 | ||
1353 | dc->delayed_branch = 1; | |
1354 | if (dslot) { | |
1355 | dc->delayed_branch = 2; | |
1356 | dc->tb_flags |= D_FLAG; | |
1357 | tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)), | |
68cee38a | 1358 | cpu_env, offsetof(CPUMBState, bimm)); |
4acb54ba EI |
1359 | } |
1360 | if (link && dc->rd) | |
1361 | tcg_gen_movi_tl(cpu_R[dc->rd], dc->pc); | |
1362 | ||
1363 | dc->jmp = JMP_INDIRECT; | |
1364 | if (abs) { | |
1365 | tcg_gen_movi_tl(env_btaken, 1); | |
1366 | tcg_gen_mov_tl(env_btarget, *(dec_alu_op_b(dc))); | |
ff21f70a EI |
1367 | if (link && !dslot) { |
1368 | if (!(dc->tb_flags & IMM_FLAG) && (dc->imm == 8 || dc->imm == 0x18)) | |
1369 | t_gen_raise_exception(dc, EXCP_BREAK); | |
1370 | if (dc->imm == 0) { | |
1371 | if ((dc->tb_flags & MSR_EE_FLAG) && mem_index == MMU_USER_IDX) { | |
1372 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
1373 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1374 | return; | |
1375 | } | |
1376 | ||
1377 | t_gen_raise_exception(dc, EXCP_DEBUG); | |
1378 | } | |
1379 | } | |
4acb54ba | 1380 | } else { |
61204ce8 EI |
1381 | if (dec_alu_op_b_is_small_imm(dc)) { |
1382 | dc->jmp = JMP_DIRECT; | |
1383 | dc->jmp_pc = dc->pc + (int32_t)((int16_t)dc->imm); | |
1384 | } else { | |
4acb54ba EI |
1385 | tcg_gen_movi_tl(env_btaken, 1); |
1386 | tcg_gen_movi_tl(env_btarget, dc->pc); | |
1387 | tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc))); | |
4acb54ba EI |
1388 | } |
1389 | } | |
1390 | } | |
1391 | ||
1392 | static inline void do_rti(DisasContext *dc) | |
1393 | { | |
1394 | TCGv t0, t1; | |
1395 | t0 = tcg_temp_new(); | |
1396 | t1 = tcg_temp_new(); | |
1397 | tcg_gen_shri_tl(t0, cpu_SR[SR_MSR], 1); | |
1398 | tcg_gen_ori_tl(t1, cpu_SR[SR_MSR], MSR_IE); | |
1399 | tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM)); | |
1400 | ||
1401 | tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM)); | |
1402 | tcg_gen_or_tl(t1, t1, t0); | |
1403 | msr_write(dc, t1); | |
1404 | tcg_temp_free(t1); | |
1405 | tcg_temp_free(t0); | |
1406 | dc->tb_flags &= ~DRTI_FLAG; | |
1407 | } | |
1408 | ||
1409 | static inline void do_rtb(DisasContext *dc) | |
1410 | { | |
1411 | TCGv t0, t1; | |
1412 | t0 = tcg_temp_new(); | |
1413 | t1 = tcg_temp_new(); | |
1414 | tcg_gen_andi_tl(t1, cpu_SR[SR_MSR], ~MSR_BIP); | |
1415 | tcg_gen_shri_tl(t0, t1, 1); | |
1416 | tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM)); | |
1417 | ||
1418 | tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM)); | |
1419 | tcg_gen_or_tl(t1, t1, t0); | |
1420 | msr_write(dc, t1); | |
1421 | tcg_temp_free(t1); | |
1422 | tcg_temp_free(t0); | |
1423 | dc->tb_flags &= ~DRTB_FLAG; | |
1424 | } | |
1425 | ||
1426 | static inline void do_rte(DisasContext *dc) | |
1427 | { | |
1428 | TCGv t0, t1; | |
1429 | t0 = tcg_temp_new(); | |
1430 | t1 = tcg_temp_new(); | |
1431 | ||
1432 | tcg_gen_ori_tl(t1, cpu_SR[SR_MSR], MSR_EE); | |
1433 | tcg_gen_andi_tl(t1, t1, ~MSR_EIP); | |
1434 | tcg_gen_shri_tl(t0, t1, 1); | |
1435 | tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM)); | |
1436 | ||
1437 | tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM)); | |
1438 | tcg_gen_or_tl(t1, t1, t0); | |
1439 | msr_write(dc, t1); | |
1440 | tcg_temp_free(t1); | |
1441 | tcg_temp_free(t0); | |
1442 | dc->tb_flags &= ~DRTE_FLAG; | |
1443 | } | |
1444 | ||
1445 | static void dec_rts(DisasContext *dc) | |
1446 | { | |
1447 | unsigned int b_bit, i_bit, e_bit; | |
1567a005 | 1448 | int mem_index = cpu_mmu_index(dc->env); |
4acb54ba EI |
1449 | |
1450 | i_bit = dc->ir & (1 << 21); | |
1451 | b_bit = dc->ir & (1 << 22); | |
1452 | e_bit = dc->ir & (1 << 23); | |
1453 | ||
1454 | dc->delayed_branch = 2; | |
1455 | dc->tb_flags |= D_FLAG; | |
1456 | tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)), | |
68cee38a | 1457 | cpu_env, offsetof(CPUMBState, bimm)); |
4acb54ba EI |
1458 | |
1459 | if (i_bit) { | |
1460 | LOG_DIS("rtid ir=%x\n", dc->ir); | |
1567a005 EI |
1461 | if ((dc->tb_flags & MSR_EE_FLAG) |
1462 | && mem_index == MMU_USER_IDX) { | |
1463 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
1464 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1465 | } | |
4acb54ba EI |
1466 | dc->tb_flags |= DRTI_FLAG; |
1467 | } else if (b_bit) { | |
1468 | LOG_DIS("rtbd ir=%x\n", dc->ir); | |
1567a005 EI |
1469 | if ((dc->tb_flags & MSR_EE_FLAG) |
1470 | && mem_index == MMU_USER_IDX) { | |
1471 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
1472 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1473 | } | |
4acb54ba EI |
1474 | dc->tb_flags |= DRTB_FLAG; |
1475 | } else if (e_bit) { | |
1476 | LOG_DIS("rted ir=%x\n", dc->ir); | |
1567a005 EI |
1477 | if ((dc->tb_flags & MSR_EE_FLAG) |
1478 | && mem_index == MMU_USER_IDX) { | |
1479 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
1480 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1481 | } | |
4acb54ba EI |
1482 | dc->tb_flags |= DRTE_FLAG; |
1483 | } else | |
1484 | LOG_DIS("rts ir=%x\n", dc->ir); | |
1485 | ||
23979dc5 | 1486 | dc->jmp = JMP_INDIRECT; |
4acb54ba EI |
1487 | tcg_gen_movi_tl(env_btaken, 1); |
1488 | tcg_gen_add_tl(env_btarget, cpu_R[dc->ra], *(dec_alu_op_b(dc))); | |
1489 | } | |
1490 | ||
97694c57 EI |
1491 | static int dec_check_fpuv2(DisasContext *dc) |
1492 | { | |
1493 | int r; | |
1494 | ||
1495 | r = dc->env->pvr.regs[2] & PVR2_USE_FPU2_MASK; | |
1496 | ||
1497 | if (!r && (dc->tb_flags & MSR_EE_FLAG)) { | |
1498 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_FPU); | |
1499 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1500 | } | |
1501 | return r; | |
1502 | } | |
1503 | ||
1567a005 EI |
1504 | static void dec_fpu(DisasContext *dc) |
1505 | { | |
97694c57 EI |
1506 | unsigned int fpu_insn; |
1507 | ||
1567a005 | 1508 | if ((dc->tb_flags & MSR_EE_FLAG) |
97f90cbf | 1509 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) |
1567a005 | 1510 | && !((dc->env->pvr.regs[2] & PVR2_USE_FPU_MASK))) { |
97694c57 | 1511 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); |
1567a005 EI |
1512 | t_gen_raise_exception(dc, EXCP_HW_EXCP); |
1513 | return; | |
1514 | } | |
1515 | ||
97694c57 EI |
1516 | fpu_insn = (dc->ir >> 7) & 7; |
1517 | ||
1518 | switch (fpu_insn) { | |
1519 | case 0: | |
64254eba BS |
1520 | gen_helper_fadd(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra], |
1521 | cpu_R[dc->rb]); | |
97694c57 EI |
1522 | break; |
1523 | ||
1524 | case 1: | |
64254eba BS |
1525 | gen_helper_frsub(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra], |
1526 | cpu_R[dc->rb]); | |
97694c57 EI |
1527 | break; |
1528 | ||
1529 | case 2: | |
64254eba BS |
1530 | gen_helper_fmul(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra], |
1531 | cpu_R[dc->rb]); | |
97694c57 EI |
1532 | break; |
1533 | ||
1534 | case 3: | |
64254eba BS |
1535 | gen_helper_fdiv(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra], |
1536 | cpu_R[dc->rb]); | |
97694c57 EI |
1537 | break; |
1538 | ||
1539 | case 4: | |
1540 | switch ((dc->ir >> 4) & 7) { | |
1541 | case 0: | |
64254eba | 1542 | gen_helper_fcmp_un(cpu_R[dc->rd], cpu_env, |
97694c57 EI |
1543 | cpu_R[dc->ra], cpu_R[dc->rb]); |
1544 | break; | |
1545 | case 1: | |
64254eba | 1546 | gen_helper_fcmp_lt(cpu_R[dc->rd], cpu_env, |
97694c57 EI |
1547 | cpu_R[dc->ra], cpu_R[dc->rb]); |
1548 | break; | |
1549 | case 2: | |
64254eba | 1550 | gen_helper_fcmp_eq(cpu_R[dc->rd], cpu_env, |
97694c57 EI |
1551 | cpu_R[dc->ra], cpu_R[dc->rb]); |
1552 | break; | |
1553 | case 3: | |
64254eba | 1554 | gen_helper_fcmp_le(cpu_R[dc->rd], cpu_env, |
97694c57 EI |
1555 | cpu_R[dc->ra], cpu_R[dc->rb]); |
1556 | break; | |
1557 | case 4: | |
64254eba | 1558 | gen_helper_fcmp_gt(cpu_R[dc->rd], cpu_env, |
97694c57 EI |
1559 | cpu_R[dc->ra], cpu_R[dc->rb]); |
1560 | break; | |
1561 | case 5: | |
64254eba | 1562 | gen_helper_fcmp_ne(cpu_R[dc->rd], cpu_env, |
97694c57 EI |
1563 | cpu_R[dc->ra], cpu_R[dc->rb]); |
1564 | break; | |
1565 | case 6: | |
64254eba | 1566 | gen_helper_fcmp_ge(cpu_R[dc->rd], cpu_env, |
97694c57 EI |
1567 | cpu_R[dc->ra], cpu_R[dc->rb]); |
1568 | break; | |
1569 | default: | |
71547a3b BS |
1570 | qemu_log_mask(LOG_UNIMP, |
1571 | "unimplemented fcmp fpu_insn=%x pc=%x" | |
1572 | " opc=%x\n", | |
1573 | fpu_insn, dc->pc, dc->opcode); | |
97694c57 EI |
1574 | dc->abort_at_next_insn = 1; |
1575 | break; | |
1576 | } | |
1577 | break; | |
1578 | ||
1579 | case 5: | |
1580 | if (!dec_check_fpuv2(dc)) { | |
1581 | return; | |
1582 | } | |
64254eba | 1583 | gen_helper_flt(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]); |
97694c57 EI |
1584 | break; |
1585 | ||
1586 | case 6: | |
1587 | if (!dec_check_fpuv2(dc)) { | |
1588 | return; | |
1589 | } | |
64254eba | 1590 | gen_helper_fint(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]); |
97694c57 EI |
1591 | break; |
1592 | ||
1593 | case 7: | |
1594 | if (!dec_check_fpuv2(dc)) { | |
1595 | return; | |
1596 | } | |
64254eba | 1597 | gen_helper_fsqrt(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]); |
97694c57 EI |
1598 | break; |
1599 | ||
1600 | default: | |
71547a3b BS |
1601 | qemu_log_mask(LOG_UNIMP, "unimplemented FPU insn fpu_insn=%x pc=%x" |
1602 | " opc=%x\n", | |
1603 | fpu_insn, dc->pc, dc->opcode); | |
97694c57 EI |
1604 | dc->abort_at_next_insn = 1; |
1605 | break; | |
1606 | } | |
1567a005 EI |
1607 | } |
1608 | ||
4acb54ba EI |
1609 | static void dec_null(DisasContext *dc) |
1610 | { | |
02b33596 EI |
1611 | if ((dc->tb_flags & MSR_EE_FLAG) |
1612 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) { | |
1613 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); | |
1614 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1615 | return; | |
1616 | } | |
4acb54ba EI |
1617 | qemu_log ("unknown insn pc=%x opc=%x\n", dc->pc, dc->opcode); |
1618 | dc->abort_at_next_insn = 1; | |
1619 | } | |
1620 | ||
6d76d23e EI |
1621 | /* Insns connected to FSL or AXI stream attached devices. */ |
1622 | static void dec_stream(DisasContext *dc) | |
1623 | { | |
1624 | int mem_index = cpu_mmu_index(dc->env); | |
1625 | TCGv_i32 t_id, t_ctrl; | |
1626 | int ctrl; | |
1627 | ||
1628 | LOG_DIS("%s%s imm=%x\n", dc->rd ? "get" : "put", | |
1629 | dc->type_b ? "" : "d", dc->imm); | |
1630 | ||
1631 | if ((dc->tb_flags & MSR_EE_FLAG) && (mem_index == MMU_USER_IDX)) { | |
1632 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN); | |
1633 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1634 | return; | |
1635 | } | |
1636 | ||
1637 | t_id = tcg_temp_new(); | |
1638 | if (dc->type_b) { | |
1639 | tcg_gen_movi_tl(t_id, dc->imm & 0xf); | |
1640 | ctrl = dc->imm >> 10; | |
1641 | } else { | |
1642 | tcg_gen_andi_tl(t_id, cpu_R[dc->rb], 0xf); | |
1643 | ctrl = dc->imm >> 5; | |
1644 | } | |
1645 | ||
1646 | t_ctrl = tcg_const_tl(ctrl); | |
1647 | ||
1648 | if (dc->rd == 0) { | |
1649 | gen_helper_put(t_id, t_ctrl, cpu_R[dc->ra]); | |
1650 | } else { | |
1651 | gen_helper_get(cpu_R[dc->rd], t_id, t_ctrl); | |
1652 | } | |
1653 | tcg_temp_free(t_id); | |
1654 | tcg_temp_free(t_ctrl); | |
1655 | } | |
1656 | ||
4acb54ba EI |
1657 | static struct decoder_info { |
1658 | struct { | |
1659 | uint32_t bits; | |
1660 | uint32_t mask; | |
1661 | }; | |
1662 | void (*dec)(DisasContext *dc); | |
1663 | } decinfo[] = { | |
1664 | {DEC_ADD, dec_add}, | |
1665 | {DEC_SUB, dec_sub}, | |
1666 | {DEC_AND, dec_and}, | |
1667 | {DEC_XOR, dec_xor}, | |
1668 | {DEC_OR, dec_or}, | |
1669 | {DEC_BIT, dec_bit}, | |
1670 | {DEC_BARREL, dec_barrel}, | |
1671 | {DEC_LD, dec_load}, | |
1672 | {DEC_ST, dec_store}, | |
1673 | {DEC_IMM, dec_imm}, | |
1674 | {DEC_BR, dec_br}, | |
1675 | {DEC_BCC, dec_bcc}, | |
1676 | {DEC_RTS, dec_rts}, | |
1567a005 | 1677 | {DEC_FPU, dec_fpu}, |
4acb54ba EI |
1678 | {DEC_MUL, dec_mul}, |
1679 | {DEC_DIV, dec_div}, | |
1680 | {DEC_MSR, dec_msr}, | |
6d76d23e | 1681 | {DEC_STREAM, dec_stream}, |
4acb54ba EI |
1682 | {{0, 0}, dec_null} |
1683 | }; | |
1684 | ||
64254eba | 1685 | static inline void decode(DisasContext *dc, uint32_t ir) |
4acb54ba | 1686 | { |
4acb54ba EI |
1687 | int i; |
1688 | ||
fdefe51c | 1689 | if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) { |
4acb54ba | 1690 | tcg_gen_debug_insn_start(dc->pc); |
fdefe51c | 1691 | } |
4acb54ba | 1692 | |
64254eba | 1693 | dc->ir = ir; |
4acb54ba EI |
1694 | LOG_DIS("%8.8x\t", dc->ir); |
1695 | ||
1696 | if (dc->ir) | |
1697 | dc->nr_nops = 0; | |
1698 | else { | |
1567a005 | 1699 | if ((dc->tb_flags & MSR_EE_FLAG) |
97f90cbf EI |
1700 | && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) |
1701 | && (dc->env->pvr.regs[2] & PVR2_OPCODE_0x0_ILL_MASK)) { | |
1567a005 EI |
1702 | tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); |
1703 | t_gen_raise_exception(dc, EXCP_HW_EXCP); | |
1704 | return; | |
1705 | } | |
1706 | ||
4acb54ba EI |
1707 | LOG_DIS("nr_nops=%d\t", dc->nr_nops); |
1708 | dc->nr_nops++; | |
1709 | if (dc->nr_nops > 4) | |
1710 | cpu_abort(dc->env, "fetching nop sequence\n"); | |
1711 | } | |
1712 | /* bit 2 seems to indicate insn type. */ | |
1713 | dc->type_b = ir & (1 << 29); | |
1714 | ||
1715 | dc->opcode = EXTRACT_FIELD(ir, 26, 31); | |
1716 | dc->rd = EXTRACT_FIELD(ir, 21, 25); | |
1717 | dc->ra = EXTRACT_FIELD(ir, 16, 20); | |
1718 | dc->rb = EXTRACT_FIELD(ir, 11, 15); | |
1719 | dc->imm = EXTRACT_FIELD(ir, 0, 15); | |
1720 | ||
1721 | /* Large switch for all insns. */ | |
1722 | for (i = 0; i < ARRAY_SIZE(decinfo); i++) { | |
1723 | if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) { | |
1724 | decinfo[i].dec(dc); | |
1725 | break; | |
1726 | } | |
1727 | } | |
1728 | } | |
1729 | ||
68cee38a | 1730 | static void check_breakpoint(CPUMBState *env, DisasContext *dc) |
4acb54ba EI |
1731 | { |
1732 | CPUBreakpoint *bp; | |
1733 | ||
72cf2d4f BS |
1734 | if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) { |
1735 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { | |
4acb54ba EI |
1736 | if (bp->pc == dc->pc) { |
1737 | t_gen_raise_exception(dc, EXCP_DEBUG); | |
1738 | dc->is_jmp = DISAS_UPDATE; | |
1739 | } | |
1740 | } | |
1741 | } | |
1742 | } | |
1743 | ||
1744 | /* generate intermediate code for basic block 'tb'. */ | |
fd327f48 | 1745 | static inline void |
4a274212 AF |
1746 | gen_intermediate_code_internal(MicroBlazeCPU *cpu, TranslationBlock *tb, |
1747 | bool search_pc) | |
4acb54ba | 1748 | { |
ed2803da | 1749 | CPUState *cs = CPU(cpu); |
4a274212 | 1750 | CPUMBState *env = &cpu->env; |
4acb54ba EI |
1751 | uint16_t *gen_opc_end; |
1752 | uint32_t pc_start; | |
1753 | int j, lj; | |
1754 | struct DisasContext ctx; | |
1755 | struct DisasContext *dc = &ctx; | |
1756 | uint32_t next_page_start, org_flags; | |
1757 | target_ulong npc; | |
1758 | int num_insns; | |
1759 | int max_insns; | |
1760 | ||
4acb54ba EI |
1761 | pc_start = tb->pc; |
1762 | dc->env = env; | |
1763 | dc->tb = tb; | |
1764 | org_flags = dc->synced_flags = dc->tb_flags = tb->flags; | |
1765 | ||
92414b31 | 1766 | gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE; |
4acb54ba EI |
1767 | |
1768 | dc->is_jmp = DISAS_NEXT; | |
1769 | dc->jmp = 0; | |
1770 | dc->delayed_branch = !!(dc->tb_flags & D_FLAG); | |
23979dc5 EI |
1771 | if (dc->delayed_branch) { |
1772 | dc->jmp = JMP_INDIRECT; | |
1773 | } | |
4acb54ba | 1774 | dc->pc = pc_start; |
ed2803da | 1775 | dc->singlestep_enabled = cs->singlestep_enabled; |
4acb54ba EI |
1776 | dc->cpustate_changed = 0; |
1777 | dc->abort_at_next_insn = 0; | |
1778 | dc->nr_nops = 0; | |
1779 | ||
1780 | if (pc_start & 3) | |
1781 | cpu_abort(env, "Microblaze: unaligned PC=%x\n", pc_start); | |
1782 | ||
1783 | if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) { | |
1784 | #if !SIM_COMPAT | |
1785 | qemu_log("--------------\n"); | |
a0762859 | 1786 | log_cpu_state(CPU(cpu), 0); |
4acb54ba EI |
1787 | #endif |
1788 | } | |
1789 | ||
1790 | next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; | |
1791 | lj = -1; | |
1792 | num_insns = 0; | |
1793 | max_insns = tb->cflags & CF_COUNT_MASK; | |
1794 | if (max_insns == 0) | |
1795 | max_insns = CF_COUNT_MASK; | |
1796 | ||
806f352d | 1797 | gen_tb_start(); |
4acb54ba EI |
1798 | do |
1799 | { | |
1800 | #if SIM_COMPAT | |
1801 | if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) { | |
1802 | tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc); | |
1803 | gen_helper_debug(); | |
1804 | } | |
1805 | #endif | |
1806 | check_breakpoint(env, dc); | |
1807 | ||
1808 | if (search_pc) { | |
92414b31 | 1809 | j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf; |
4acb54ba EI |
1810 | if (lj < j) { |
1811 | lj++; | |
1812 | while (lj < j) | |
ab1103de | 1813 | tcg_ctx.gen_opc_instr_start[lj++] = 0; |
4acb54ba | 1814 | } |
25983cad | 1815 | tcg_ctx.gen_opc_pc[lj] = dc->pc; |
ab1103de | 1816 | tcg_ctx.gen_opc_instr_start[lj] = 1; |
c9c99c22 | 1817 | tcg_ctx.gen_opc_icount[lj] = num_insns; |
4acb54ba EI |
1818 | } |
1819 | ||
1820 | /* Pretty disas. */ | |
1821 | LOG_DIS("%8.8x:\t", dc->pc); | |
1822 | ||
1823 | if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) | |
1824 | gen_io_start(); | |
1825 | ||
1826 | dc->clear_imm = 1; | |
64254eba | 1827 | decode(dc, cpu_ldl_code(env, dc->pc)); |
4acb54ba EI |
1828 | if (dc->clear_imm) |
1829 | dc->tb_flags &= ~IMM_FLAG; | |
4acb54ba EI |
1830 | dc->pc += 4; |
1831 | num_insns++; | |
1832 | ||
1833 | if (dc->delayed_branch) { | |
1834 | dc->delayed_branch--; | |
1835 | if (!dc->delayed_branch) { | |
1836 | if (dc->tb_flags & DRTI_FLAG) | |
1837 | do_rti(dc); | |
1838 | if (dc->tb_flags & DRTB_FLAG) | |
1839 | do_rtb(dc); | |
1840 | if (dc->tb_flags & DRTE_FLAG) | |
1841 | do_rte(dc); | |
1842 | /* Clear the delay slot flag. */ | |
1843 | dc->tb_flags &= ~D_FLAG; | |
1844 | /* If it is a direct jump, try direct chaining. */ | |
23979dc5 | 1845 | if (dc->jmp == JMP_INDIRECT) { |
4acb54ba EI |
1846 | eval_cond_jmp(dc, env_btarget, tcg_const_tl(dc->pc)); |
1847 | dc->is_jmp = DISAS_JUMP; | |
23979dc5 | 1848 | } else if (dc->jmp == JMP_DIRECT) { |
844bab60 EI |
1849 | t_sync_flags(dc); |
1850 | gen_goto_tb(dc, 0, dc->jmp_pc); | |
1851 | dc->is_jmp = DISAS_TB_JUMP; | |
1852 | } else if (dc->jmp == JMP_DIRECT_CC) { | |
23979dc5 EI |
1853 | int l1; |
1854 | ||
1855 | t_sync_flags(dc); | |
1856 | l1 = gen_new_label(); | |
1857 | /* Conditional jmp. */ | |
1858 | tcg_gen_brcondi_tl(TCG_COND_NE, env_btaken, 0, l1); | |
1859 | gen_goto_tb(dc, 1, dc->pc); | |
1860 | gen_set_label(l1); | |
1861 | gen_goto_tb(dc, 0, dc->jmp_pc); | |
1862 | ||
1863 | dc->is_jmp = DISAS_TB_JUMP; | |
4acb54ba EI |
1864 | } |
1865 | break; | |
1866 | } | |
1867 | } | |
ed2803da | 1868 | if (cs->singlestep_enabled) { |
4acb54ba | 1869 | break; |
ed2803da | 1870 | } |
4acb54ba | 1871 | } while (!dc->is_jmp && !dc->cpustate_changed |
efd7f486 | 1872 | && tcg_ctx.gen_opc_ptr < gen_opc_end |
4acb54ba EI |
1873 | && !singlestep |
1874 | && (dc->pc < next_page_start) | |
1875 | && num_insns < max_insns); | |
1876 | ||
1877 | npc = dc->pc; | |
844bab60 | 1878 | if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) { |
4acb54ba EI |
1879 | if (dc->tb_flags & D_FLAG) { |
1880 | dc->is_jmp = DISAS_UPDATE; | |
1881 | tcg_gen_movi_tl(cpu_SR[SR_PC], npc); | |
1882 | sync_jmpstate(dc); | |
1883 | } else | |
1884 | npc = dc->jmp_pc; | |
1885 | } | |
1886 | ||
1887 | if (tb->cflags & CF_LAST_IO) | |
1888 | gen_io_end(); | |
1889 | /* Force an update if the per-tb cpu state has changed. */ | |
1890 | if (dc->is_jmp == DISAS_NEXT | |
1891 | && (dc->cpustate_changed || org_flags != dc->tb_flags)) { | |
1892 | dc->is_jmp = DISAS_UPDATE; | |
1893 | tcg_gen_movi_tl(cpu_SR[SR_PC], npc); | |
1894 | } | |
1895 | t_sync_flags(dc); | |
1896 | ||
ed2803da | 1897 | if (unlikely(cs->singlestep_enabled)) { |
6c5f738d EI |
1898 | TCGv_i32 tmp = tcg_const_i32(EXCP_DEBUG); |
1899 | ||
1900 | if (dc->is_jmp != DISAS_JUMP) { | |
4acb54ba | 1901 | tcg_gen_movi_tl(cpu_SR[SR_PC], npc); |
6c5f738d | 1902 | } |
64254eba | 1903 | gen_helper_raise_exception(cpu_env, tmp); |
6c5f738d | 1904 | tcg_temp_free_i32(tmp); |
4acb54ba EI |
1905 | } else { |
1906 | switch(dc->is_jmp) { | |
1907 | case DISAS_NEXT: | |
1908 | gen_goto_tb(dc, 1, npc); | |
1909 | break; | |
1910 | default: | |
1911 | case DISAS_JUMP: | |
1912 | case DISAS_UPDATE: | |
1913 | /* indicate that the hash table must be used | |
1914 | to find the next TB */ | |
1915 | tcg_gen_exit_tb(0); | |
1916 | break; | |
1917 | case DISAS_TB_JUMP: | |
1918 | /* nothing more to generate */ | |
1919 | break; | |
1920 | } | |
1921 | } | |
806f352d | 1922 | gen_tb_end(tb, num_insns); |
efd7f486 | 1923 | *tcg_ctx.gen_opc_ptr = INDEX_op_end; |
4acb54ba | 1924 | if (search_pc) { |
92414b31 | 1925 | j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf; |
4acb54ba EI |
1926 | lj++; |
1927 | while (lj <= j) | |
ab1103de | 1928 | tcg_ctx.gen_opc_instr_start[lj++] = 0; |
4acb54ba EI |
1929 | } else { |
1930 | tb->size = dc->pc - pc_start; | |
1931 | tb->icount = num_insns; | |
1932 | } | |
1933 | ||
1934 | #ifdef DEBUG_DISAS | |
1935 | #if !SIM_COMPAT | |
1936 | if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) { | |
1937 | qemu_log("\n"); | |
1938 | #if DISAS_GNU | |
f4359b9f | 1939 | log_target_disas(env, pc_start, dc->pc - pc_start, 0); |
4acb54ba | 1940 | #endif |
e6aa0f11 | 1941 | qemu_log("\nisize=%d osize=%td\n", |
92414b31 EV |
1942 | dc->pc - pc_start, tcg_ctx.gen_opc_ptr - |
1943 | tcg_ctx.gen_opc_buf); | |
4acb54ba EI |
1944 | } |
1945 | #endif | |
1946 | #endif | |
1947 | assert(!dc->abort_at_next_insn); | |
1948 | } | |
1949 | ||
68cee38a | 1950 | void gen_intermediate_code (CPUMBState *env, struct TranslationBlock *tb) |
4acb54ba | 1951 | { |
4a274212 | 1952 | gen_intermediate_code_internal(mb_env_get_cpu(env), tb, false); |
4acb54ba EI |
1953 | } |
1954 | ||
68cee38a | 1955 | void gen_intermediate_code_pc (CPUMBState *env, struct TranslationBlock *tb) |
4acb54ba | 1956 | { |
4a274212 | 1957 | gen_intermediate_code_internal(mb_env_get_cpu(env), tb, true); |
4acb54ba EI |
1958 | } |
1959 | ||
878096ee AF |
1960 | void mb_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf, |
1961 | int flags) | |
4acb54ba | 1962 | { |
878096ee AF |
1963 | MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs); |
1964 | CPUMBState *env = &cpu->env; | |
4acb54ba EI |
1965 | int i; |
1966 | ||
1967 | if (!env || !f) | |
1968 | return; | |
1969 | ||
1970 | cpu_fprintf(f, "IN: PC=%x %s\n", | |
1971 | env->sregs[SR_PC], lookup_symbol(env->sregs[SR_PC])); | |
97694c57 | 1972 | cpu_fprintf(f, "rmsr=%x resr=%x rear=%x debug=%x imm=%x iflags=%x fsr=%x\n", |
4c24aa0a | 1973 | env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR], |
97694c57 | 1974 | env->debug, env->imm, env->iflags, env->sregs[SR_FSR]); |
17c52a43 | 1975 | cpu_fprintf(f, "btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n", |
4acb54ba EI |
1976 | env->btaken, env->btarget, |
1977 | (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel", | |
17c52a43 EI |
1978 | (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel", |
1979 | (env->sregs[SR_MSR] & MSR_EIP), | |
1980 | (env->sregs[SR_MSR] & MSR_IE)); | |
1981 | ||
4acb54ba EI |
1982 | for (i = 0; i < 32; i++) { |
1983 | cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]); | |
1984 | if ((i + 1) % 4 == 0) | |
1985 | cpu_fprintf(f, "\n"); | |
1986 | } | |
1987 | cpu_fprintf(f, "\n\n"); | |
1988 | } | |
1989 | ||
b33ab1f7 | 1990 | MicroBlazeCPU *cpu_mb_init(const char *cpu_model) |
4acb54ba | 1991 | { |
b77f98ca | 1992 | MicroBlazeCPU *cpu; |
4acb54ba | 1993 | |
b77f98ca | 1994 | cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU)); |
4acb54ba | 1995 | |
746b03b2 | 1996 | object_property_set_bool(OBJECT(cpu), true, "realized", NULL); |
4acb54ba | 1997 | |
cd0c24f9 AF |
1998 | return cpu; |
1999 | } | |
4acb54ba | 2000 | |
cd0c24f9 AF |
2001 | void mb_tcg_init(void) |
2002 | { | |
2003 | int i; | |
4acb54ba EI |
2004 | |
2005 | cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env"); | |
2006 | ||
2007 | env_debug = tcg_global_mem_new(TCG_AREG0, | |
68cee38a | 2008 | offsetof(CPUMBState, debug), |
4acb54ba EI |
2009 | "debug0"); |
2010 | env_iflags = tcg_global_mem_new(TCG_AREG0, | |
68cee38a | 2011 | offsetof(CPUMBState, iflags), |
4acb54ba EI |
2012 | "iflags"); |
2013 | env_imm = tcg_global_mem_new(TCG_AREG0, | |
68cee38a | 2014 | offsetof(CPUMBState, imm), |
4acb54ba EI |
2015 | "imm"); |
2016 | env_btarget = tcg_global_mem_new(TCG_AREG0, | |
68cee38a | 2017 | offsetof(CPUMBState, btarget), |
4acb54ba EI |
2018 | "btarget"); |
2019 | env_btaken = tcg_global_mem_new(TCG_AREG0, | |
68cee38a | 2020 | offsetof(CPUMBState, btaken), |
4acb54ba | 2021 | "btaken"); |
4a536270 EI |
2022 | env_res_addr = tcg_global_mem_new(TCG_AREG0, |
2023 | offsetof(CPUMBState, res_addr), | |
2024 | "res_addr"); | |
11a76217 EI |
2025 | env_res_val = tcg_global_mem_new(TCG_AREG0, |
2026 | offsetof(CPUMBState, res_val), | |
2027 | "res_val"); | |
4acb54ba EI |
2028 | for (i = 0; i < ARRAY_SIZE(cpu_R); i++) { |
2029 | cpu_R[i] = tcg_global_mem_new(TCG_AREG0, | |
68cee38a | 2030 | offsetof(CPUMBState, regs[i]), |
4acb54ba EI |
2031 | regnames[i]); |
2032 | } | |
2033 | for (i = 0; i < ARRAY_SIZE(cpu_SR); i++) { | |
2034 | cpu_SR[i] = tcg_global_mem_new(TCG_AREG0, | |
68cee38a | 2035 | offsetof(CPUMBState, sregs[i]), |
4acb54ba EI |
2036 | special_regnames[i]); |
2037 | } | |
4acb54ba EI |
2038 | } |
2039 | ||
68cee38a | 2040 | void restore_state_to_opc(CPUMBState *env, TranslationBlock *tb, int pc_pos) |
4acb54ba | 2041 | { |
25983cad | 2042 | env->sregs[SR_PC] = tcg_ctx.gen_opc_pc[pc_pos]; |
4acb54ba | 2043 | } |