target-lm32/translate.c

   1 /*
   2  *  LatticeMico32 main translation routines.
   3  *
   4  *  Copyright (c) 2010 Michael Walle <michael@walle.cc>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "cpu.h"
  21 #include "disas/disas.h"
  22 #include "helper.h"
  23 #include "tcg-op.h"
  24
  25 #include "hw/lm32_pic.h"
  26
  27 #define GEN_HELPER 1
  28 #include "helper.h"
  29
  30 #define DISAS_LM32 1
  31 #if DISAS_LM32
  32 #  define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
  33 #else
  34 #  define LOG_DIS(...) do { } while (0)
  35 #endif
  36
  37 #define EXTRACT_FIELD(src, start, end) \
  38             (((src) >> start) & ((1 << (end - start + 1)) - 1))
  39
  40 #define MEM_INDEX 0
  41
  42 static TCGv_ptr cpu_env;
  43 static TCGv cpu_R[32];
  44 static TCGv cpu_pc;
  45 static TCGv cpu_ie;
  46 static TCGv cpu_icc;
  47 static TCGv cpu_dcc;
  48 static TCGv cpu_cc;
  49 static TCGv cpu_cfg;
  50 static TCGv cpu_eba;
  51 static TCGv cpu_dc;
  52 static TCGv cpu_deba;
  53 static TCGv cpu_bp[4];
  54 static TCGv cpu_wp[4];
  55
  56 #include "exec/gen-icount.h"
  57
  58 enum {
  59     OP_FMT_RI,
  60     OP_FMT_RR,
  61     OP_FMT_CR,
  62     OP_FMT_I
  63 };
  64
  65 /* This is the state at translation time.  */
  66 typedef struct DisasContext {
  67     CPULM32State *env;
  68     target_ulong pc;
  69
  70     /* Decoder.  */
  71     int format;
  72     uint32_t ir;
  73     uint8_t opcode;
  74     uint8_t r0, r1, r2, csr;
  75     uint16_t imm5;
  76     uint16_t imm16;
  77     uint32_t imm26;
  78
  79     unsigned int delayed_branch;
  80     unsigned int tb_flags, synced_flags; /* tb dependent flags.  */
  81     int is_jmp;
  82
  83     int nr_nops;
  84     struct TranslationBlock *tb;
  85     int singlestep_enabled;
  86 } DisasContext;
  87
  88 static const char *regnames[] = {
  89     "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
  90     "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
  91     "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
  92     "r24", "r25", "r26/gp", "r27/fp", "r28/sp", "r29/ra",
  93     "r30/ea", "r31/ba", "bp0", "bp1", "bp2", "bp3", "wp0",
  94     "wp1", "wp2", "wp3"
  95 };
  96
  97 static inline int zero_extend(unsigned int val, int width)
  98 {
  99     return val & ((1 << width) - 1);
 100 }
 101
 102 static inline int sign_extend(unsigned int val, int width)
 103 {
 104     int sval;
 105
 106     /* LSL.  */
 107     val <<= 32 - width;
 108     sval = val;
 109     /* ASR.  */
 110     sval >>= 32 - width;
 111
 112     return sval;
 113 }
 114
 115 static inline void t_gen_raise_exception(DisasContext *dc, uint32_t index)
 116 {
 117     TCGv_i32 tmp = tcg_const_i32(index);
 118
 119     gen_helper_raise_exception(cpu_env, tmp);
 120     tcg_temp_free_i32(tmp);
 121 }
 122
 123 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
 124 {
 125     TranslationBlock *tb;
 126
 127     tb = dc->tb;
 128     if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) &&
 129             likely(!dc->singlestep_enabled)) {
 130         tcg_gen_goto_tb(n);
 131         tcg_gen_movi_tl(cpu_pc, dest);
 132         tcg_gen_exit_tb((tcg_target_long)tb + n);
 133     } else {
 134         tcg_gen_movi_tl(cpu_pc, dest);
 135         if (dc->singlestep_enabled) {
 136             t_gen_raise_exception(dc, EXCP_DEBUG);
 137         }
 138         tcg_gen_exit_tb(0);
 139     }
 140 }
 141
 142 static void dec_add(DisasContext *dc)
 143 {
 144     if (dc->format == OP_FMT_RI) {
 145         if (dc->r0 == R_R0) {
 146             if (dc->r1 == R_R0 && dc->imm16 == 0) {
 147                 LOG_DIS("nop\n");
 148             } else {
 149                 LOG_DIS("mvi r%d, %d\n", dc->r1, sign_extend(dc->imm16, 16));
 150             }
 151         } else {
 152             LOG_DIS("addi r%d, r%d, %d\n", dc->r1, dc->r0,
 153                     sign_extend(dc->imm16, 16));
 154         }
 155     } else {
 156         LOG_DIS("add r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 157     }
 158
 159     if (dc->format == OP_FMT_RI) {
 160         tcg_gen_addi_tl(cpu_R[dc->r1], cpu_R[dc->r0],
 161                 sign_extend(dc->imm16, 16));
 162     } else {
 163         tcg_gen_add_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 164     }
 165 }
 166
 167 static void dec_and(DisasContext *dc)
 168 {
 169     if (dc->format == OP_FMT_RI) {
 170         LOG_DIS("andi r%d, r%d, %d\n", dc->r1, dc->r0,
 171                 zero_extend(dc->imm16, 16));
 172     } else {
 173         LOG_DIS("and r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 174     }
 175
 176     if (dc->format == OP_FMT_RI) {
 177         tcg_gen_andi_tl(cpu_R[dc->r1], cpu_R[dc->r0],
 178                 zero_extend(dc->imm16, 16));
 179     } else  {
 180         if (dc->r0 == 0 && dc->r1 == 0 && dc->r2 == 0) {
 181             tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
 182             gen_helper_hlt(cpu_env);
 183         } else {
 184             tcg_gen_and_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 185         }
 186     }
 187 }
 188
 189 static void dec_andhi(DisasContext *dc)
 190 {
 191     LOG_DIS("andhi r%d, r%d, %d\n", dc->r2, dc->r0, dc->imm16);
 192
 193     tcg_gen_andi_tl(cpu_R[dc->r1], cpu_R[dc->r0], (dc->imm16 << 16));
 194 }
 195
 196 static void dec_b(DisasContext *dc)
 197 {
 198     if (dc->r0 == R_RA) {
 199         LOG_DIS("ret\n");
 200     } else if (dc->r0 == R_EA) {
 201         LOG_DIS("eret\n");
 202     } else if (dc->r0 == R_BA) {
 203         LOG_DIS("bret\n");
 204     } else {
 205         LOG_DIS("b r%d\n", dc->r0);
 206     }
 207
 208     /* restore IE.IE in case of an eret */
 209     if (dc->r0 == R_EA) {
 210         TCGv t0 = tcg_temp_new();
 211         int l1 = gen_new_label();
 212         tcg_gen_andi_tl(t0, cpu_ie, IE_EIE);
 213         tcg_gen_ori_tl(cpu_ie, cpu_ie, IE_IE);
 214         tcg_gen_brcondi_tl(TCG_COND_EQ, t0, IE_EIE, l1);
 215         tcg_gen_andi_tl(cpu_ie, cpu_ie, ~IE_IE);
 216         gen_set_label(l1);
 217         tcg_temp_free(t0);
 218     } else if (dc->r0 == R_BA) {
 219         TCGv t0 = tcg_temp_new();
 220         int l1 = gen_new_label();
 221         tcg_gen_andi_tl(t0, cpu_ie, IE_BIE);
 222         tcg_gen_ori_tl(cpu_ie, cpu_ie, IE_IE);
 223         tcg_gen_brcondi_tl(TCG_COND_EQ, t0, IE_BIE, l1);
 224         tcg_gen_andi_tl(cpu_ie, cpu_ie, ~IE_IE);
 225         gen_set_label(l1);
 226         tcg_temp_free(t0);
 227     }
 228     tcg_gen_mov_tl(cpu_pc, cpu_R[dc->r0]);
 229
 230     dc->is_jmp = DISAS_JUMP;
 231 }
 232
 233 static void dec_bi(DisasContext *dc)
 234 {
 235     LOG_DIS("bi %d\n", sign_extend(dc->imm26 << 2, 26));
 236
 237     gen_goto_tb(dc, 0, dc->pc + (sign_extend(dc->imm26 << 2, 26)));
 238
 239     dc->is_jmp = DISAS_TB_JUMP;
 240 }
 241
 242 static inline void gen_cond_branch(DisasContext *dc, int cond)
 243 {
 244     int l1;
 245
 246     l1 = gen_new_label();
 247     tcg_gen_brcond_tl(cond, cpu_R[dc->r0], cpu_R[dc->r1], l1);
 248     gen_goto_tb(dc, 0, dc->pc + 4);
 249     gen_set_label(l1);
 250     gen_goto_tb(dc, 1, dc->pc + (sign_extend(dc->imm16 << 2, 16)));
 251     dc->is_jmp = DISAS_TB_JUMP;
 252 }
 253
 254 static void dec_be(DisasContext *dc)
 255 {
 256     LOG_DIS("be r%d, r%d, %d\n", dc->r0, dc->r1,
 257             sign_extend(dc->imm16, 16) * 4);
 258
 259     gen_cond_branch(dc, TCG_COND_EQ);
 260 }
 261
 262 static void dec_bg(DisasContext *dc)
 263 {
 264     LOG_DIS("bg r%d, r%d, %d\n", dc->r0, dc->r1,
 265             sign_extend(dc->imm16, 16 * 4));
 266
 267     gen_cond_branch(dc, TCG_COND_GT);
 268 }
 269
 270 static void dec_bge(DisasContext *dc)
 271 {
 272     LOG_DIS("bge r%d, r%d, %d\n", dc->r0, dc->r1,
 273             sign_extend(dc->imm16, 16) * 4);
 274
 275     gen_cond_branch(dc, TCG_COND_GE);
 276 }
 277
 278 static void dec_bgeu(DisasContext *dc)
 279 {
 280     LOG_DIS("bgeu r%d, r%d, %d\n", dc->r0, dc->r1,
 281             sign_extend(dc->imm16, 16) * 4);
 282
 283     gen_cond_branch(dc, TCG_COND_GEU);
 284 }
 285
 286 static void dec_bgu(DisasContext *dc)
 287 {
 288     LOG_DIS("bgu r%d, r%d, %d\n", dc->r0, dc->r1,
 289             sign_extend(dc->imm16, 16) * 4);
 290
 291     gen_cond_branch(dc, TCG_COND_GTU);
 292 }
 293
 294 static void dec_bne(DisasContext *dc)
 295 {
 296     LOG_DIS("bne r%d, r%d, %d\n", dc->r0, dc->r1,
 297             sign_extend(dc->imm16, 16) * 4);
 298
 299     gen_cond_branch(dc, TCG_COND_NE);
 300 }
 301
 302 static void dec_call(DisasContext *dc)
 303 {
 304     LOG_DIS("call r%d\n", dc->r0);
 305
 306     tcg_gen_movi_tl(cpu_R[R_RA], dc->pc + 4);
 307     tcg_gen_mov_tl(cpu_pc, cpu_R[dc->r0]);
 308
 309     dc->is_jmp = DISAS_JUMP;
 310 }
 311
 312 static void dec_calli(DisasContext *dc)
 313 {
 314     LOG_DIS("calli %d\n", sign_extend(dc->imm26, 26) * 4);
 315
 316     tcg_gen_movi_tl(cpu_R[R_RA], dc->pc + 4);
 317     gen_goto_tb(dc, 0, dc->pc + (sign_extend(dc->imm26 << 2, 26)));
 318
 319     dc->is_jmp = DISAS_TB_JUMP;
 320 }
 321
 322 static inline void gen_compare(DisasContext *dc, int cond)
 323 {
 324     int rX = (dc->format == OP_FMT_RR) ? dc->r2 : dc->r1;
 325     int rY = (dc->format == OP_FMT_RR) ? dc->r0 : dc->r0;
 326     int rZ = (dc->format == OP_FMT_RR) ? dc->r1 : -1;
 327
 328     if (dc->format == OP_FMT_RI) {
 329         tcg_gen_setcondi_tl(cond, cpu_R[rX], cpu_R[rY],
 330                 sign_extend(dc->imm16, 16));
 331     } else {
 332         tcg_gen_setcond_tl(cond, cpu_R[rX], cpu_R[rY], cpu_R[rZ]);
 333     }
 334 }
 335
 336 static void dec_cmpe(DisasContext *dc)
 337 {
 338     if (dc->format == OP_FMT_RI) {
 339         LOG_DIS("cmpei r%d, r%d, %d\n", dc->r0, dc->r1,
 340                 sign_extend(dc->imm16, 16));
 341     } else {
 342         LOG_DIS("cmpe r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 343     }
 344
 345     gen_compare(dc, TCG_COND_EQ);
 346 }
 347
 348 static void dec_cmpg(DisasContext *dc)
 349 {
 350     if (dc->format == OP_FMT_RI) {
 351         LOG_DIS("cmpgi r%d, r%d, %d\n", dc->r0, dc->r1,
 352                 sign_extend(dc->imm16, 16));
 353     } else {
 354         LOG_DIS("cmpg r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 355     }
 356
 357     gen_compare(dc, TCG_COND_GT);
 358 }
 359
 360 static void dec_cmpge(DisasContext *dc)
 361 {
 362     if (dc->format == OP_FMT_RI) {
 363         LOG_DIS("cmpgei r%d, r%d, %d\n", dc->r0, dc->r1,
 364                 sign_extend(dc->imm16, 16));
 365     } else {
 366         LOG_DIS("cmpge r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 367     }
 368
 369     gen_compare(dc, TCG_COND_GE);
 370 }
 371
 372 static void dec_cmpgeu(DisasContext *dc)
 373 {
 374     if (dc->format == OP_FMT_RI) {
 375         LOG_DIS("cmpgeui r%d, r%d, %d\n", dc->r0, dc->r1,
 376                 sign_extend(dc->imm16, 16));
 377     } else {
 378         LOG_DIS("cmpgeu r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 379     }
 380
 381     gen_compare(dc, TCG_COND_GEU);
 382 }
 383
 384 static void dec_cmpgu(DisasContext *dc)
 385 {
 386     if (dc->format == OP_FMT_RI) {
 387         LOG_DIS("cmpgui r%d, r%d, %d\n", dc->r0, dc->r1,
 388                 sign_extend(dc->imm16, 16));
 389     } else {
 390         LOG_DIS("cmpgu r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 391     }
 392
 393     gen_compare(dc, TCG_COND_GTU);
 394 }
 395
 396 static void dec_cmpne(DisasContext *dc)
 397 {
 398     if (dc->format == OP_FMT_RI) {
 399         LOG_DIS("cmpnei r%d, r%d, %d\n", dc->r0, dc->r1,
 400                 sign_extend(dc->imm16, 16));
 401     } else {
 402         LOG_DIS("cmpne r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 403     }
 404
 405     gen_compare(dc, TCG_COND_NE);
 406 }
 407
 408 static void dec_divu(DisasContext *dc)
 409 {
 410     int l1;
 411
 412     LOG_DIS("divu r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 413
 414     if (!(dc->env->features & LM32_FEATURE_DIVIDE)) {
 415         cpu_abort(dc->env, "hardware divider is not available\n");
 416     }
 417
 418     l1 = gen_new_label();
 419     tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[dc->r1], 0, l1);
 420     tcg_gen_movi_tl(cpu_pc, dc->pc);
 421     t_gen_raise_exception(dc, EXCP_DIVIDE_BY_ZERO);
 422     gen_set_label(l1);
 423     tcg_gen_divu_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 424 }
 425
 426 static void dec_lb(DisasContext *dc)
 427 {
 428     TCGv t0;
 429
 430     LOG_DIS("lb r%d, (r%d+%d)\n", dc->r1, dc->r0, dc->imm16);
 431
 432     t0 = tcg_temp_new();
 433     tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
 434     tcg_gen_qemu_ld8s(cpu_R[dc->r1], t0, MEM_INDEX);
 435     tcg_temp_free(t0);
 436 }
 437
 438 static void dec_lbu(DisasContext *dc)
 439 {
 440     TCGv t0;
 441
 442     LOG_DIS("lbu r%d, (r%d+%d)\n", dc->r1, dc->r0, dc->imm16);
 443
 444     t0 = tcg_temp_new();
 445     tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
 446     tcg_gen_qemu_ld8u(cpu_R[dc->r1], t0, MEM_INDEX);
 447     tcg_temp_free(t0);
 448 }
 449
 450 static void dec_lh(DisasContext *dc)
 451 {
 452     TCGv t0;
 453
 454     LOG_DIS("lh r%d, (r%d+%d)\n", dc->r1, dc->r0, dc->imm16);
 455
 456     t0 = tcg_temp_new();
 457     tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
 458     tcg_gen_qemu_ld16s(cpu_R[dc->r1], t0, MEM_INDEX);
 459     tcg_temp_free(t0);
 460 }
 461
 462 static void dec_lhu(DisasContext *dc)
 463 {
 464     TCGv t0;
 465
 466     LOG_DIS("lhu r%d, (r%d+%d)\n", dc->r1, dc->r0, dc->imm16);
 467
 468     t0 = tcg_temp_new();
 469     tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
 470     tcg_gen_qemu_ld16u(cpu_R[dc->r1], t0, MEM_INDEX);
 471     tcg_temp_free(t0);
 472 }
 473
 474 static void dec_lw(DisasContext *dc)
 475 {
 476     TCGv t0;
 477
 478     LOG_DIS("lw r%d, (r%d+%d)\n", dc->r1, dc->r0, sign_extend(dc->imm16, 16));
 479
 480     t0 = tcg_temp_new();
 481     tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
 482     tcg_gen_qemu_ld32s(cpu_R[dc->r1], t0, MEM_INDEX);
 483     tcg_temp_free(t0);
 484 }
 485
 486 static void dec_modu(DisasContext *dc)
 487 {
 488     int l1;
 489
 490     LOG_DIS("modu r%d, r%d, %d\n", dc->r2, dc->r0, dc->r1);
 491
 492     if (!(dc->env->features & LM32_FEATURE_DIVIDE)) {
 493         cpu_abort(dc->env, "hardware divider is not available\n");
 494     }
 495
 496     l1 = gen_new_label();
 497     tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[dc->r1], 0, l1);
 498     tcg_gen_movi_tl(cpu_pc, dc->pc);
 499     t_gen_raise_exception(dc, EXCP_DIVIDE_BY_ZERO);
 500     gen_set_label(l1);
 501     tcg_gen_remu_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 502 }
 503
 504 static void dec_mul(DisasContext *dc)
 505 {
 506     if (dc->format == OP_FMT_RI) {
 507         LOG_DIS("muli r%d, r%d, %d\n", dc->r0, dc->r1,
 508                 sign_extend(dc->imm16, 16));
 509     } else {
 510         LOG_DIS("mul r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 511     }
 512
 513     if (!(dc->env->features & LM32_FEATURE_MULTIPLY)) {
 514         cpu_abort(dc->env, "hardware multiplier is not available\n");
 515     }
 516
 517     if (dc->format == OP_FMT_RI) {
 518         tcg_gen_muli_tl(cpu_R[dc->r1], cpu_R[dc->r0],
 519                 sign_extend(dc->imm16, 16));
 520     } else {
 521         tcg_gen_mul_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 522     }
 523 }
 524
 525 static void dec_nor(DisasContext *dc)
 526 {
 527     if (dc->format == OP_FMT_RI) {
 528         LOG_DIS("nori r%d, r%d, %d\n", dc->r0, dc->r1,
 529                 zero_extend(dc->imm16, 16));
 530     } else {
 531         LOG_DIS("nor r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 532     }
 533
 534     if (dc->format == OP_FMT_RI) {
 535         TCGv t0 = tcg_temp_new();
 536         tcg_gen_movi_tl(t0, zero_extend(dc->imm16, 16));
 537         tcg_gen_nor_tl(cpu_R[dc->r1], cpu_R[dc->r0], t0);
 538         tcg_temp_free(t0);
 539     } else {
 540         tcg_gen_nor_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 541     }
 542 }
 543
 544 static void dec_or(DisasContext *dc)
 545 {
 546     if (dc->format == OP_FMT_RI) {
 547         LOG_DIS("ori r%d, r%d, %d\n", dc->r1, dc->r0,
 548                 zero_extend(dc->imm16, 16));
 549     } else {
 550         if (dc->r1 == R_R0) {
 551             LOG_DIS("mv r%d, r%d\n", dc->r2, dc->r0);
 552         } else {
 553             LOG_DIS("or r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 554         }
 555     }
 556
 557     if (dc->format == OP_FMT_RI) {
 558         tcg_gen_ori_tl(cpu_R[dc->r1], cpu_R[dc->r0],
 559                 zero_extend(dc->imm16, 16));
 560     } else {
 561         tcg_gen_or_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 562     }
 563 }
 564
 565 static void dec_orhi(DisasContext *dc)
 566 {
 567     if (dc->r0 == R_R0) {
 568         LOG_DIS("mvhi r%d, %d\n", dc->r1, dc->imm16);
 569     } else {
 570         LOG_DIS("orhi r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm16);
 571     }
 572
 573     tcg_gen_ori_tl(cpu_R[dc->r1], cpu_R[dc->r0], (dc->imm16 << 16));
 574 }
 575
 576 static void dec_scall(DisasContext *dc)
 577 {
 578     if (dc->imm5 == 7) {
 579         LOG_DIS("scall\n");
 580     } else if (dc->imm5 == 2) {
 581         LOG_DIS("break\n");
 582     } else {
 583         cpu_abort(dc->env, "invalid opcode\n");
 584     }
 585
 586     if (dc->imm5 == 7) {
 587         tcg_gen_movi_tl(cpu_pc, dc->pc);
 588         t_gen_raise_exception(dc, EXCP_SYSTEMCALL);
 589     } else {
 590         tcg_gen_movi_tl(cpu_pc, dc->pc);
 591         t_gen_raise_exception(dc, EXCP_BREAKPOINT);
 592     }
 593 }
 594
 595 static void dec_rcsr(DisasContext *dc)
 596 {
 597     LOG_DIS("rcsr r%d, %d\n", dc->r2, dc->csr);
 598
 599     switch (dc->csr) {
 600     case CSR_IE:
 601         tcg_gen_mov_tl(cpu_R[dc->r2], cpu_ie);
 602         break;
 603     case CSR_IM:
 604         gen_helper_rcsr_im(cpu_R[dc->r2], cpu_env);
 605         break;
 606     case CSR_IP:
 607         gen_helper_rcsr_ip(cpu_R[dc->r2], cpu_env);
 608         break;
 609     case CSR_CC:
 610         tcg_gen_mov_tl(cpu_R[dc->r2], cpu_cc);
 611         break;
 612     case CSR_CFG:
 613         tcg_gen_mov_tl(cpu_R[dc->r2], cpu_cfg);
 614         break;
 615     case CSR_EBA:
 616         tcg_gen_mov_tl(cpu_R[dc->r2], cpu_eba);
 617         break;
 618     case CSR_DC:
 619         tcg_gen_mov_tl(cpu_R[dc->r2], cpu_dc);
 620         break;
 621     case CSR_DEBA:
 622         tcg_gen_mov_tl(cpu_R[dc->r2], cpu_deba);
 623         break;
 624     case CSR_JTX:
 625         gen_helper_rcsr_jtx(cpu_R[dc->r2], cpu_env);
 626         break;
 627     case CSR_JRX:
 628         gen_helper_rcsr_jrx(cpu_R[dc->r2], cpu_env);
 629         break;
 630     case CSR_ICC:
 631     case CSR_DCC:
 632     case CSR_BP0:
 633     case CSR_BP1:
 634     case CSR_BP2:
 635     case CSR_BP3:
 636     case CSR_WP0:
 637     case CSR_WP1:
 638     case CSR_WP2:
 639     case CSR_WP3:
 640         cpu_abort(dc->env, "invalid read access csr=%x\n", dc->csr);
 641         break;
 642     default:
 643         cpu_abort(dc->env, "read_csr: unknown csr=%x\n", dc->csr);
 644         break;
 645     }
 646 }
 647
 648 static void dec_sb(DisasContext *dc)
 649 {
 650     TCGv t0;
 651
 652     LOG_DIS("sb (r%d+%d), r%d\n", dc->r0, dc->imm16, dc->r1);
 653
 654     t0 = tcg_temp_new();
 655     tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
 656     tcg_gen_qemu_st8(cpu_R[dc->r1], t0, MEM_INDEX);
 657     tcg_temp_free(t0);
 658 }
 659
 660 static void dec_sextb(DisasContext *dc)
 661 {
 662     LOG_DIS("sextb r%d, r%d\n", dc->r2, dc->r0);
 663
 664     if (!(dc->env->features & LM32_FEATURE_SIGN_EXTEND)) {
 665         cpu_abort(dc->env, "hardware sign extender is not available\n");
 666     }
 667
 668     tcg_gen_ext8s_tl(cpu_R[dc->r2], cpu_R[dc->r0]);
 669 }
 670
 671 static void dec_sexth(DisasContext *dc)
 672 {
 673     LOG_DIS("sexth r%d, r%d\n", dc->r2, dc->r0);
 674
 675     if (!(dc->env->features & LM32_FEATURE_SIGN_EXTEND)) {
 676         cpu_abort(dc->env, "hardware sign extender is not available\n");
 677     }
 678
 679     tcg_gen_ext16s_tl(cpu_R[dc->r2], cpu_R[dc->r0]);
 680 }
 681
 682 static void dec_sh(DisasContext *dc)
 683 {
 684     TCGv t0;
 685
 686     LOG_DIS("sh (r%d+%d), r%d\n", dc->r0, dc->imm16, dc->r1);
 687
 688     t0 = tcg_temp_new();
 689     tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
 690     tcg_gen_qemu_st16(cpu_R[dc->r1], t0, MEM_INDEX);
 691     tcg_temp_free(t0);
 692 }
 693
 694 static void dec_sl(DisasContext *dc)
 695 {
 696     if (dc->format == OP_FMT_RI) {
 697         LOG_DIS("sli r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm5);
 698     } else {
 699         LOG_DIS("sl r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 700     }
 701
 702     if (!(dc->env->features & LM32_FEATURE_SHIFT)) {
 703         cpu_abort(dc->env, "hardware shifter is not available\n");
 704     }
 705
 706     if (dc->format == OP_FMT_RI) {
 707         tcg_gen_shli_tl(cpu_R[dc->r1], cpu_R[dc->r0], dc->imm5);
 708     } else {
 709         TCGv t0 = tcg_temp_new();
 710         tcg_gen_andi_tl(t0, cpu_R[dc->r1], 0x1f);
 711         tcg_gen_shl_tl(cpu_R[dc->r2], cpu_R[dc->r0], t0);
 712         tcg_temp_free(t0);
 713     }
 714 }
 715
 716 static void dec_sr(DisasContext *dc)
 717 {
 718     if (dc->format == OP_FMT_RI) {
 719         LOG_DIS("sri r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm5);
 720     } else {
 721         LOG_DIS("sr r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 722     }
 723
 724     if (!(dc->env->features & LM32_FEATURE_SHIFT)) {
 725         if (dc->format == OP_FMT_RI) {
 726             /* TODO: check r1 == 1 during runtime */
 727         } else {
 728             if (dc->imm5 != 1) {
 729                 cpu_abort(dc->env, "hardware shifter is not available\n");
 730             }
 731         }
 732     }
 733
 734     if (dc->format == OP_FMT_RI) {
 735         tcg_gen_sari_tl(cpu_R[dc->r1], cpu_R[dc->r0], dc->imm5);
 736     } else {
 737         TCGv t0 = tcg_temp_new();
 738         tcg_gen_andi_tl(t0, cpu_R[dc->r1], 0x1f);
 739         tcg_gen_sar_tl(cpu_R[dc->r2], cpu_R[dc->r0], t0);
 740         tcg_temp_free(t0);
 741     }
 742 }
 743
 744 static void dec_sru(DisasContext *dc)
 745 {
 746     if (dc->format == OP_FMT_RI) {
 747         LOG_DIS("srui r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm5);
 748     } else {
 749         LOG_DIS("sru r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 750     }
 751
 752     if (!(dc->env->features & LM32_FEATURE_SHIFT)) {
 753         if (dc->format == OP_FMT_RI) {
 754             /* TODO: check r1 == 1 during runtime */
 755         } else {
 756             if (dc->imm5 != 1) {
 757                 cpu_abort(dc->env, "hardware shifter is not available\n");
 758             }
 759         }
 760     }
 761
 762     if (dc->format == OP_FMT_RI) {
 763         tcg_gen_shri_tl(cpu_R[dc->r1], cpu_R[dc->r0], dc->imm5);
 764     } else {
 765         TCGv t0 = tcg_temp_new();
 766         tcg_gen_andi_tl(t0, cpu_R[dc->r1], 0x1f);
 767         tcg_gen_shr_tl(cpu_R[dc->r2], cpu_R[dc->r0], t0);
 768         tcg_temp_free(t0);
 769     }
 770 }
 771
 772 static void dec_sub(DisasContext *dc)
 773 {
 774     LOG_DIS("sub r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 775
 776     tcg_gen_sub_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 777 }
 778
 779 static void dec_sw(DisasContext *dc)
 780 {
 781     TCGv t0;
 782
 783     LOG_DIS("sw (r%d+%d), r%d\n", dc->r0, sign_extend(dc->imm16, 16), dc->r1);
 784
 785     t0 = tcg_temp_new();
 786     tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
 787     tcg_gen_qemu_st32(cpu_R[dc->r1], t0, MEM_INDEX);
 788     tcg_temp_free(t0);
 789 }
 790
 791 static void dec_user(DisasContext *dc)
 792 {
 793     LOG_DIS("user");
 794
 795     cpu_abort(dc->env, "user insn undefined\n");
 796 }
 797
 798 static void dec_wcsr(DisasContext *dc)
 799 {
 800     int no;
 801
 802     LOG_DIS("wcsr r%d, %d\n", dc->r1, dc->csr);
 803
 804     switch (dc->csr) {
 805     case CSR_IE:
 806         tcg_gen_mov_tl(cpu_ie, cpu_R[dc->r1]);
 807         tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
 808         dc->is_jmp = DISAS_UPDATE;
 809         break;
 810     case CSR_IM:
 811         /* mark as an io operation because it could cause an interrupt */
 812         if (use_icount) {
 813             gen_io_start();
 814         }
 815         gen_helper_wcsr_im(cpu_env, cpu_R[dc->r1]);
 816         tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
 817         if (use_icount) {
 818             gen_io_end();
 819         }
 820         dc->is_jmp = DISAS_UPDATE;
 821         break;
 822     case CSR_IP:
 823         /* mark as an io operation because it could cause an interrupt */
 824         if (use_icount) {
 825             gen_io_start();
 826         }
 827         gen_helper_wcsr_ip(cpu_env, cpu_R[dc->r1]);
 828         tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
 829         if (use_icount) {
 830             gen_io_end();
 831         }
 832         dc->is_jmp = DISAS_UPDATE;
 833         break;
 834     case CSR_ICC:
 835         /* TODO */
 836         break;
 837     case CSR_DCC:
 838         /* TODO */
 839         break;
 840     case CSR_EBA:
 841         tcg_gen_mov_tl(cpu_eba, cpu_R[dc->r1]);
 842         break;
 843     case CSR_DEBA:
 844         tcg_gen_mov_tl(cpu_deba, cpu_R[dc->r1]);
 845         break;
 846     case CSR_JTX:
 847         gen_helper_wcsr_jtx(cpu_env, cpu_R[dc->r1]);
 848         break;
 849     case CSR_JRX:
 850         gen_helper_wcsr_jrx(cpu_env, cpu_R[dc->r1]);
 851         break;
 852     case CSR_DC:
 853         tcg_gen_mov_tl(cpu_dc, cpu_R[dc->r1]);
 854         break;
 855     case CSR_BP0:
 856     case CSR_BP1:
 857     case CSR_BP2:
 858     case CSR_BP3:
 859         no = dc->csr - CSR_BP0;
 860         if (dc->env->num_bps <= no) {
 861             cpu_abort(dc->env, "breakpoint #%i is not available\n", no);
 862         }
 863         tcg_gen_mov_tl(cpu_bp[no], cpu_R[dc->r1]);
 864         break;
 865     case CSR_WP0:
 866     case CSR_WP1:
 867     case CSR_WP2:
 868     case CSR_WP3:
 869         no = dc->csr - CSR_WP0;
 870         if (dc->env->num_wps <= no) {
 871             cpu_abort(dc->env, "watchpoint #%i is not available\n", no);
 872         }
 873         tcg_gen_mov_tl(cpu_wp[no], cpu_R[dc->r1]);
 874         break;
 875     case CSR_CC:
 876     case CSR_CFG:
 877         cpu_abort(dc->env, "invalid write access csr=%x\n", dc->csr);
 878         break;
 879     default:
 880         cpu_abort(dc->env, "write_csr unknown csr=%x\n", dc->csr);
 881         break;
 882     }
 883 }
 884
 885 static void dec_xnor(DisasContext *dc)
 886 {
 887     if (dc->format == OP_FMT_RI) {
 888         LOG_DIS("xnori r%d, r%d, %d\n", dc->r0, dc->r1,
 889                 zero_extend(dc->imm16, 16));
 890     } else {
 891         if (dc->r1 == R_R0) {
 892             LOG_DIS("not r%d, r%d\n", dc->r2, dc->r0);
 893         } else {
 894             LOG_DIS("xnor r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 895         }
 896     }
 897
 898     if (dc->format == OP_FMT_RI) {
 899         tcg_gen_xori_tl(cpu_R[dc->r1], cpu_R[dc->r0],
 900                 zero_extend(dc->imm16, 16));
 901         tcg_gen_not_tl(cpu_R[dc->r1], cpu_R[dc->r1]);
 902     } else {
 903         tcg_gen_eqv_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 904     }
 905 }
 906
 907 static void dec_xor(DisasContext *dc)
 908 {
 909     if (dc->format == OP_FMT_RI) {
 910         LOG_DIS("xori r%d, r%d, %d\n", dc->r0, dc->r1,
 911                 zero_extend(dc->imm16, 16));
 912     } else {
 913         LOG_DIS("xor r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
 914     }
 915
 916     if (dc->format == OP_FMT_RI) {
 917         tcg_gen_xori_tl(cpu_R[dc->r1], cpu_R[dc->r0],
 918                 zero_extend(dc->imm16, 16));
 919     } else {
 920         tcg_gen_xor_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
 921     }
 922 }
 923
 924 static void dec_ill(DisasContext *dc)
 925 {
 926     cpu_abort(dc->env, "unknown opcode 0x%02x\n", dc->opcode);
 927 }
 928
 929 typedef void (*DecoderInfo)(DisasContext *dc);
 930 static const DecoderInfo decinfo[] = {
 931     dec_sru, dec_nor, dec_mul, dec_sh, dec_lb, dec_sr, dec_xor, dec_lh,
 932     dec_and, dec_xnor, dec_lw, dec_lhu, dec_sb, dec_add, dec_or, dec_sl,
 933     dec_lbu, dec_be, dec_bg, dec_bge, dec_bgeu, dec_bgu, dec_sw, dec_bne,
 934     dec_andhi, dec_cmpe, dec_cmpg, dec_cmpge, dec_cmpgeu, dec_cmpgu, dec_orhi,
 935     dec_cmpne,
 936     dec_sru, dec_nor, dec_mul, dec_divu, dec_rcsr, dec_sr, dec_xor, dec_ill,
 937     dec_and, dec_xnor, dec_ill, dec_scall, dec_sextb, dec_add, dec_or, dec_sl,
 938     dec_b, dec_modu, dec_sub, dec_user, dec_wcsr, dec_ill, dec_call, dec_sexth,
 939     dec_bi, dec_cmpe, dec_cmpg, dec_cmpge, dec_cmpgeu, dec_cmpgu, dec_calli,
 940     dec_cmpne
 941 };
 942
 943 static inline void decode(DisasContext *dc, uint32_t ir)
 944 {
 945     if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
 946         tcg_gen_debug_insn_start(dc->pc);
 947     }
 948
 949     dc->ir = ir;
 950     LOG_DIS("%8.8x\t", dc->ir);
 951
 952     /* try guessing 'empty' instruction memory, although it may be a valid
 953      * instruction sequence (eg. srui r0, r0, 0) */
 954     if (dc->ir) {
 955         dc->nr_nops = 0;
 956     } else {
 957         LOG_DIS("nr_nops=%d\t", dc->nr_nops);
 958         dc->nr_nops++;
 959         if (dc->nr_nops > 4) {
 960             cpu_abort(dc->env, "fetching nop sequence\n");
 961         }
 962     }
 963
 964     dc->opcode = EXTRACT_FIELD(ir, 26, 31);
 965
 966     dc->imm5 = EXTRACT_FIELD(ir, 0, 4);
 967     dc->imm16 = EXTRACT_FIELD(ir, 0, 15);
 968     dc->imm26 = EXTRACT_FIELD(ir, 0, 25);
 969
 970     dc->csr = EXTRACT_FIELD(ir, 21, 25);
 971     dc->r0 = EXTRACT_FIELD(ir, 21, 25);
 972     dc->r1 = EXTRACT_FIELD(ir, 16, 20);
 973     dc->r2 = EXTRACT_FIELD(ir, 11, 15);
 974
 975     /* bit 31 seems to indicate insn type.  */
 976     if (ir & (1 << 31)) {
 977         dc->format = OP_FMT_RR;
 978     } else {
 979         dc->format = OP_FMT_RI;
 980     }
 981
 982     assert(ARRAY_SIZE(decinfo) == 64);
 983     assert(dc->opcode < 64);
 984
 985     decinfo[dc->opcode](dc);
 986 }
 987
 988 static void check_breakpoint(CPULM32State *env, DisasContext *dc)
 989 {
 990     CPUBreakpoint *bp;
 991
 992     if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
 993         QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
 994             if (bp->pc == dc->pc) {
 995                 tcg_gen_movi_tl(cpu_pc, dc->pc);
 996                 t_gen_raise_exception(dc, EXCP_DEBUG);
 997                 dc->is_jmp = DISAS_UPDATE;
 998              }
 999         }
1000     }
1001 }
1002
1003 /* generate intermediate code for basic block 'tb'.  */
1004 static void gen_intermediate_code_internal(CPULM32State *env,
1005         TranslationBlock *tb, int search_pc)
1006 {
1007     struct DisasContext ctx, *dc = &ctx;
1008     uint16_t *gen_opc_end;
1009     uint32_t pc_start;
1010     int j, lj;
1011     uint32_t next_page_start;
1012     int num_insns;
1013     int max_insns;
1014
1015     pc_start = tb->pc;
1016     dc->env = env;
1017     dc->tb = tb;
1018
1019     gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
1020
1021     dc->is_jmp = DISAS_NEXT;
1022     dc->pc = pc_start;
1023     dc->singlestep_enabled = env->singlestep_enabled;
1024     dc->nr_nops = 0;
1025
1026     if (pc_start & 3) {
1027         cpu_abort(env, "LM32: unaligned PC=%x\n", pc_start);
1028     }
1029
1030     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
1031         qemu_log("-----------------------------------------\n");
1032         log_cpu_state(env, 0);
1033     }
1034
1035     next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
1036     lj = -1;
1037     num_insns = 0;
1038     max_insns = tb->cflags & CF_COUNT_MASK;
1039     if (max_insns == 0) {
1040         max_insns = CF_COUNT_MASK;
1041     }
1042
1043     gen_icount_start();
1044     do {
1045         check_breakpoint(env, dc);
1046
1047         if (search_pc) {
1048             j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
1049             if (lj < j) {
1050                 lj++;
1051                 while (lj < j) {
1052                     tcg_ctx.gen_opc_instr_start[lj++] = 0;
1053                 }
1054             }
1055             tcg_ctx.gen_opc_pc[lj] = dc->pc;
1056             tcg_ctx.gen_opc_instr_start[lj] = 1;
1057             tcg_ctx.gen_opc_icount[lj] = num_insns;
1058         }
1059
1060         /* Pretty disas.  */
1061         LOG_DIS("%8.8x:\t", dc->pc);
1062
1063         if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
1064             gen_io_start();
1065         }
1066
1067         decode(dc, cpu_ldl_code(env, dc->pc));
1068         dc->pc += 4;
1069         num_insns++;
1070
1071     } while (!dc->is_jmp
1072          && tcg_ctx.gen_opc_ptr < gen_opc_end
1073          && !env->singlestep_enabled
1074          && !singlestep
1075          && (dc->pc < next_page_start)
1076          && num_insns < max_insns);
1077
1078     if (tb->cflags & CF_LAST_IO) {
1079         gen_io_end();
1080     }
1081
1082     if (unlikely(env->singlestep_enabled)) {
1083         if (dc->is_jmp == DISAS_NEXT) {
1084             tcg_gen_movi_tl(cpu_pc, dc->pc);
1085         }
1086         t_gen_raise_exception(dc, EXCP_DEBUG);
1087     } else {
1088         switch (dc->is_jmp) {
1089         case DISAS_NEXT:
1090             gen_goto_tb(dc, 1, dc->pc);
1091             break;
1092         default:
1093         case DISAS_JUMP:
1094         case DISAS_UPDATE:
1095             /* indicate that the hash table must be used
1096                to find the next TB */
1097             tcg_gen_exit_tb(0);
1098             break;
1099         case DISAS_TB_JUMP:
1100             /* nothing more to generate */
1101             break;
1102         }
1103     }
1104
1105     gen_icount_end(tb, num_insns);
1106     *tcg_ctx.gen_opc_ptr = INDEX_op_end;
1107     if (search_pc) {
1108         j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
1109         lj++;
1110         while (lj <= j) {
1111             tcg_ctx.gen_opc_instr_start[lj++] = 0;
1112         }
1113     } else {
1114         tb->size = dc->pc - pc_start;
1115         tb->icount = num_insns;
1116     }
1117
1118 #ifdef DEBUG_DISAS
1119     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
1120         qemu_log("\n");
1121         log_target_disas(env, pc_start, dc->pc - pc_start, 0);
1122         qemu_log("\nisize=%d osize=%td\n",
1123             dc->pc - pc_start, tcg_ctx.gen_opc_ptr -
1124             tcg_ctx.gen_opc_buf);
1125     }
1126 #endif
1127 }
1128
1129 void gen_intermediate_code(CPULM32State *env, struct TranslationBlock *tb)
1130 {
1131     gen_intermediate_code_internal(env, tb, 0);
1132 }
1133
1134 void gen_intermediate_code_pc(CPULM32State *env, struct TranslationBlock *tb)
1135 {
1136     gen_intermediate_code_internal(env, tb, 1);
1137 }
1138
1139 void cpu_dump_state(CPULM32State *env, FILE *f, fprintf_function cpu_fprintf,
1140                      int flags)
1141 {
1142     int i;
1143
1144     if (!env || !f) {
1145         return;
1146     }
1147
1148     cpu_fprintf(f, "IN: PC=%x %s\n",
1149                 env->pc, lookup_symbol(env->pc));
1150
1151     cpu_fprintf(f, "ie=%8.8x (IE=%x EIE=%x BIE=%x) im=%8.8x ip=%8.8x\n",
1152              env->ie,
1153              (env->ie & IE_IE) ? 1 : 0,
1154              (env->ie & IE_EIE) ? 1 : 0,
1155              (env->ie & IE_BIE) ? 1 : 0,
1156              lm32_pic_get_im(env->pic_state),
1157              lm32_pic_get_ip(env->pic_state));
1158     cpu_fprintf(f, "eba=%8.8x deba=%8.8x\n",
1159              env->eba,
1160              env->deba);
1161
1162     for (i = 0; i < 32; i++) {
1163         cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
1164         if ((i + 1) % 4 == 0) {
1165             cpu_fprintf(f, "\n");
1166         }
1167     }
1168     cpu_fprintf(f, "\n\n");
1169 }
1170
1171 void restore_state_to_opc(CPULM32State *env, TranslationBlock *tb, int pc_pos)
1172 {
1173     env->pc = tcg_ctx.gen_opc_pc[pc_pos];
1174 }
1175
1176 void lm32_translate_init(void)
1177 {
1178     int i;
1179
1180     cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
1181
1182     for (i = 0; i < ARRAY_SIZE(cpu_R); i++) {
1183         cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
1184                           offsetof(CPULM32State, regs[i]),
1185                           regnames[i]);
1186     }
1187
1188     for (i = 0; i < ARRAY_SIZE(cpu_bp); i++) {
1189         cpu_bp[i] = tcg_global_mem_new(TCG_AREG0,
1190                           offsetof(CPULM32State, bp[i]),
1191                           regnames[32+i]);
1192     }
1193
1194     for (i = 0; i < ARRAY_SIZE(cpu_wp); i++) {
1195         cpu_wp[i] = tcg_global_mem_new(TCG_AREG0,
1196                           offsetof(CPULM32State, wp[i]),
1197                           regnames[36+i]);
1198     }
1199
1200     cpu_pc = tcg_global_mem_new(TCG_AREG0,
1201                     offsetof(CPULM32State, pc),
1202                     "pc");
1203     cpu_ie = tcg_global_mem_new(TCG_AREG0,
1204                     offsetof(CPULM32State, ie),
1205                     "ie");
1206     cpu_icc = tcg_global_mem_new(TCG_AREG0,
1207                     offsetof(CPULM32State, icc),
1208                     "icc");
1209     cpu_dcc = tcg_global_mem_new(TCG_AREG0,
1210                     offsetof(CPULM32State, dcc),
1211                     "dcc");
1212     cpu_cc = tcg_global_mem_new(TCG_AREG0,
1213                     offsetof(CPULM32State, cc),
1214                     "cc");
1215     cpu_cfg = tcg_global_mem_new(TCG_AREG0,
1216                     offsetof(CPULM32State, cfg),
1217                     "cfg");
1218     cpu_eba = tcg_global_mem_new(TCG_AREG0,
1219                     offsetof(CPULM32State, eba),
1220                     "eba");
1221     cpu_dc = tcg_global_mem_new(TCG_AREG0,
1222                     offsetof(CPULM32State, dc),
1223                     "dc");
1224     cpu_deba = tcg_global_mem_new(TCG_AREG0,
1225                     offsetof(CPULM32State, deba),
1226                     "deba");
1227 }
1228