| 1 | /* NDS32-specific support for 32-bit ELF. |
| 2 | Copyright (C) 2012-2021 Free Software Foundation, Inc. |
| 3 | Contributed by Andes Technology Corporation. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program 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 |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include <stdio.h> |
| 24 | #include "ansidecl.h" |
| 25 | #include "disassemble.h" |
| 26 | #include "bfd.h" |
| 27 | #include "symcat.h" |
| 28 | #include "libiberty.h" |
| 29 | #include "opintl.h" |
| 30 | #include <stdint.h> |
| 31 | #include "hashtab.h" |
| 32 | #include "nds32-asm.h" |
| 33 | #include "opcode/nds32.h" |
| 34 | |
| 35 | /* Get fields macro define. */ |
| 36 | #define MASK_OP(insn, mask) ((insn) & (0x3f << 25 | (mask))) |
| 37 | |
| 38 | /* For mapping symbol. */ |
| 39 | enum map_type |
| 40 | { |
| 41 | MAP_DATA0, |
| 42 | MAP_DATA1, |
| 43 | MAP_DATA2, |
| 44 | MAP_DATA3, |
| 45 | MAP_DATA4, |
| 46 | MAP_CODE, |
| 47 | }; |
| 48 | |
| 49 | struct nds32_private_data |
| 50 | { |
| 51 | /* Whether any mapping symbols are present in the provided symbol |
| 52 | table. -1 if we do not know yet, otherwise 0 or 1. */ |
| 53 | int has_mapping_symbols; |
| 54 | |
| 55 | /* Track the last type (although this doesn't seem to be useful). */ |
| 56 | enum map_type last_mapping_type; |
| 57 | |
| 58 | /* Tracking symbol table information. */ |
| 59 | int last_symbol_index; |
| 60 | bfd_vma last_addr; |
| 61 | }; |
| 62 | |
| 63 | /* Default text to print if an instruction isn't recognized. */ |
| 64 | #define UNKNOWN_INSN_MSG _("*unknown*") |
| 65 | #define NDS32_PARSE_INSN16 0x01 |
| 66 | #define NDS32_PARSE_INSN32 0x02 |
| 67 | |
| 68 | static uint32_t nds32_mask_opcode (uint32_t); |
| 69 | static void nds32_special_opcode (uint32_t, struct nds32_opcode **); |
| 70 | static int get_mapping_symbol_type (struct disassemble_info *, int, |
| 71 | enum map_type *); |
| 72 | static int is_mapping_symbol (struct disassemble_info *, int, |
| 73 | enum map_type *); |
| 74 | |
| 75 | /* Hash function for disassemble. */ |
| 76 | |
| 77 | static htab_t opcode_htab; |
| 78 | |
| 79 | /* Find the value map register name. */ |
| 80 | |
| 81 | static const keyword_t * |
| 82 | nds32_find_reg_keyword (const keyword_t *reg, int value) |
| 83 | { |
| 84 | if (!reg) |
| 85 | return NULL; |
| 86 | |
| 87 | while (reg->name != NULL && reg->value != value) |
| 88 | { |
| 89 | reg++; |
| 90 | } |
| 91 | if (reg->name == NULL) |
| 92 | return NULL; |
| 93 | return reg; |
| 94 | } |
| 95 | |
| 96 | static void |
| 97 | nds32_parse_audio_ext (const field_t *pfd, |
| 98 | disassemble_info *info, uint32_t insn) |
| 99 | { |
| 100 | fprintf_ftype func = info->fprintf_func; |
| 101 | void *stream = info->stream; |
| 102 | const keyword_t *psys_reg; |
| 103 | int int_value, new_value; |
| 104 | |
| 105 | if (pfd->hw_res == HW_INT || pfd->hw_res == HW_UINT) |
| 106 | { |
| 107 | if (pfd->hw_res == HW_INT) |
| 108 | int_value = (unsigned) N32_IMMS (insn >> pfd->bitpos, |
| 109 | pfd->bitsize) << pfd->shift; |
| 110 | else |
| 111 | int_value = __GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift; |
| 112 | |
| 113 | if (int_value < 10) |
| 114 | func (stream, "#%d", int_value); |
| 115 | else |
| 116 | func (stream, "#0x%x", int_value); |
| 117 | return; |
| 118 | } |
| 119 | int_value = |
| 120 | __GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift; |
| 121 | new_value = int_value; |
| 122 | psys_reg = (keyword_t*) nds32_keywords[pfd->hw_res]; |
| 123 | |
| 124 | /* p = bit[4].bit[1:0], r = bit[4].bit[3:2]. */ |
| 125 | if (strcmp (pfd->name, "im5_i") == 0) |
| 126 | { |
| 127 | new_value = int_value & 0x03; |
| 128 | new_value |= ((int_value & 0x10) >> 2); |
| 129 | } |
| 130 | else if (strcmp (pfd->name, "im5_m") == 0) |
| 131 | { |
| 132 | new_value = ((int_value & 0x1C) >> 2); |
| 133 | } |
| 134 | /* p = 0.bit[1:0], r = 0.bit[3:2]. */ |
| 135 | /* q = 1.bit[1:0], s = 1.bit[5:4]. */ |
| 136 | else if (strcmp (pfd->name, "im6_iq") == 0) |
| 137 | { |
| 138 | new_value |= 0x04; |
| 139 | } |
| 140 | else if (strcmp (pfd->name, "im6_ms") == 0) |
| 141 | { |
| 142 | new_value |= 0x04; |
| 143 | } |
| 144 | /* Rt CONCAT(c, t21, t0). */ |
| 145 | else if (strcmp (pfd->name, "a_rt21") == 0) |
| 146 | { |
| 147 | new_value = (insn & 0x00000020) >> 5; |
| 148 | new_value |= (insn & 0x00000C00) >> 9; |
| 149 | new_value |= (insn & 0x00008000) >> 12; |
| 150 | } |
| 151 | else if (strcmp (pfd->name, "a_rte") == 0) |
| 152 | { |
| 153 | new_value = (insn & 0x00000C00) >> 9; |
| 154 | new_value |= (insn & 0x00008000) >> 12; |
| 155 | } |
| 156 | else if (strcmp (pfd->name, "a_rte1") == 0) |
| 157 | { |
| 158 | new_value = (insn & 0x00000C00) >> 9; |
| 159 | new_value |= (insn & 0x00008000) >> 12; |
| 160 | new_value |= 0x01; |
| 161 | } |
| 162 | else if (strcmp (pfd->name, "a_rte69") == 0) |
| 163 | { |
| 164 | new_value = int_value << 1; |
| 165 | } |
| 166 | else if (strcmp (pfd->name, "a_rte69_1") == 0) |
| 167 | { |
| 168 | new_value = int_value << 1; |
| 169 | new_value |= 0x01; |
| 170 | } |
| 171 | |
| 172 | psys_reg = nds32_find_reg_keyword (psys_reg, new_value); |
| 173 | if (!psys_reg) |
| 174 | func (stream, "???"); |
| 175 | else |
| 176 | func (stream, "$%s", psys_reg->name); |
| 177 | } |
| 178 | |
| 179 | /* Match instruction opcode with keyword table. */ |
| 180 | |
| 181 | static field_t * |
| 182 | match_field (char *name) |
| 183 | { |
| 184 | field_t *pfd; |
| 185 | int k; |
| 186 | |
| 187 | for (k = 0; k < NDS32_CORE_COUNT; k++) |
| 188 | { |
| 189 | pfd = (field_t *) nds32_field_table[k]; |
| 190 | while (1) |
| 191 | { |
| 192 | if (pfd->name == NULL) |
| 193 | break; |
| 194 | if (strcmp (name, pfd->name) == 0) |
| 195 | return pfd; |
| 196 | pfd++; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | return NULL; |
| 201 | } |
| 202 | |
| 203 | /* Dump instruction. If the opcode is unknown, return FALSE. */ |
| 204 | |
| 205 | static void |
| 206 | nds32_parse_opcode (struct nds32_opcode *opc, bfd_vma pc ATTRIBUTE_UNUSED, |
| 207 | disassemble_info *info, uint32_t insn, |
| 208 | uint32_t parse_mode) |
| 209 | { |
| 210 | int op = 0; |
| 211 | fprintf_ftype func = info->fprintf_func; |
| 212 | void *stream = info->stream; |
| 213 | const char *pstr_src; |
| 214 | char *pstr_tmp; |
| 215 | char tmp_string[16]; |
| 216 | unsigned int push25gpr = 0, lsmwRb, lsmwRe, lsmwEnb4, checkbit, i; |
| 217 | int int_value, ifthe1st = 1; |
| 218 | const field_t *pfd; |
| 219 | const keyword_t *psys_reg; |
| 220 | |
| 221 | if (opc == NULL) |
| 222 | { |
| 223 | func (stream, UNKNOWN_INSN_MSG); |
| 224 | return; |
| 225 | } |
| 226 | |
| 227 | pstr_src = opc->instruction; |
| 228 | if (*pstr_src == 0) |
| 229 | { |
| 230 | func (stream, "%s", opc->opcode); |
| 231 | return; |
| 232 | } |
| 233 | /* NDS32_PARSE_INSN16. */ |
| 234 | if (parse_mode & NDS32_PARSE_INSN16) |
| 235 | { |
| 236 | func (stream, "%s ", opc->opcode); |
| 237 | } |
| 238 | |
| 239 | /* NDS32_PARSE_INSN32. */ |
| 240 | else |
| 241 | { |
| 242 | op = N32_OP6 (insn); |
| 243 | if (op == N32_OP6_LSMW) |
| 244 | func (stream, "%s.", opc->opcode); |
| 245 | else if (strstr (opc->instruction, "tito")) |
| 246 | func (stream, "%s", opc->opcode); |
| 247 | else |
| 248 | func (stream, "%s\t", opc->opcode); |
| 249 | } |
| 250 | |
| 251 | while (*pstr_src) |
| 252 | { |
| 253 | switch (*pstr_src) |
| 254 | { |
| 255 | case '%': |
| 256 | case '=': |
| 257 | case '&': |
| 258 | pstr_src++; |
| 259 | /* Compare with nds32_operand_fields[].name. */ |
| 260 | pstr_tmp = &tmp_string[0]; |
| 261 | while (*pstr_src) |
| 262 | { |
| 263 | if ((*pstr_src == ',') || (*pstr_src == ' ') |
| 264 | || (*pstr_src == '{') || (*pstr_src == '}') |
| 265 | || (*pstr_src == '[') || (*pstr_src == ']') |
| 266 | || (*pstr_src == '(') || (*pstr_src == ')') |
| 267 | || (*pstr_src == '+') || (*pstr_src == '<')) |
| 268 | break; |
| 269 | *pstr_tmp++ = *pstr_src++; |
| 270 | } |
| 271 | *pstr_tmp = 0; |
| 272 | |
| 273 | if ((pfd = match_field (&tmp_string[0])) == NULL) |
| 274 | return; |
| 275 | |
| 276 | /* For insn-16. */ |
| 277 | if (parse_mode & NDS32_PARSE_INSN16) |
| 278 | { |
| 279 | if (pfd->hw_res == HW_GPR) |
| 280 | { |
| 281 | int_value = |
| 282 | __GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift; |
| 283 | /* push25/pop25. */ |
| 284 | if ((opc->value == 0xfc00) || (opc->value == 0xfc80)) |
| 285 | { |
| 286 | if (int_value == 0) |
| 287 | int_value = 6; |
| 288 | else |
| 289 | int_value = (6 + (0x01 << int_value)); |
| 290 | push25gpr = int_value; |
| 291 | } |
| 292 | else if (strcmp (pfd->name, "rt4") == 0) |
| 293 | { |
| 294 | int_value = nds32_r45map[int_value]; |
| 295 | } |
| 296 | func (stream, "$%s", nds32_keyword_gpr[int_value].name); |
| 297 | } |
| 298 | else if ((pfd->hw_res == HW_INT) || (pfd->hw_res == HW_UINT)) |
| 299 | { |
| 300 | if (pfd->hw_res == HW_INT) |
| 301 | int_value |
| 302 | = (unsigned) N32_IMMS (insn >> pfd->bitpos, |
| 303 | pfd->bitsize) << pfd->shift; |
| 304 | else |
| 305 | int_value = |
| 306 | __GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift; |
| 307 | |
| 308 | /* movpi45. */ |
| 309 | if (opc->value == 0xfa00) |
| 310 | { |
| 311 | int_value += 16; |
| 312 | func (stream, "#0x%x", int_value); |
| 313 | } |
| 314 | /* lwi45.fe. */ |
| 315 | else if (opc->value == 0xb200) |
| 316 | { |
| 317 | int_value = 0 - (128 - int_value); |
| 318 | func (stream, "#%d", int_value); |
| 319 | } |
| 320 | /* beqz38/bnez38/beqs38/bnes38/j8/beqzs8/bnezs8. */ |
| 321 | else if ((opc->value == 0xc000) || (opc->value == 0xc800) |
| 322 | || (opc->value == 0xd000) || (opc->value == 0xd800) |
| 323 | || (opc->value == 0xd500) || (opc->value == 0xe800) |
| 324 | || (opc->value == 0xe900)) |
| 325 | { |
| 326 | info->print_address_func (int_value + pc, info); |
| 327 | } |
| 328 | /* push25/pop25. */ |
| 329 | else if ((opc->value == 0xfc00) || (opc->value == 0xfc80)) |
| 330 | { |
| 331 | func (stream, "#%d ! {$r6", int_value); |
| 332 | if (push25gpr != 6) |
| 333 | func (stream, "~$%s", nds32_keyword_gpr[push25gpr].name); |
| 334 | func (stream, ", $fp, $gp, $lp}"); |
| 335 | } |
| 336 | else if (pfd->hw_res == HW_INT) |
| 337 | { |
| 338 | if (int_value < 10) |
| 339 | func (stream, "#%d", int_value); |
| 340 | else |
| 341 | func (stream, "#0x%x", int_value); |
| 342 | } |
| 343 | else /* if (pfd->hw_res == HW_UINT). */ |
| 344 | { |
| 345 | if (int_value < 10) |
| 346 | func (stream, "#%u", int_value); |
| 347 | else |
| 348 | func (stream, "#0x%x", int_value); |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | } |
| 353 | /* for audio-ext. */ |
| 354 | else if (op == N32_OP6_AEXT) |
| 355 | { |
| 356 | nds32_parse_audio_ext (pfd, info, insn); |
| 357 | } |
| 358 | /* for insn-32. */ |
| 359 | else if (pfd->hw_res < HW_INT) |
| 360 | { |
| 361 | int_value = |
| 362 | __GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift; |
| 363 | |
| 364 | psys_reg = *(nds32_keyword_table[pfd->hw_res >> 8] |
| 365 | + (pfd->hw_res & 0xff)); |
| 366 | |
| 367 | psys_reg = nds32_find_reg_keyword (psys_reg, int_value); |
| 368 | /* For HW_SR, dump the index when it can't |
| 369 | map the register name. */ |
| 370 | if (!psys_reg && pfd->hw_res == HW_SR) |
| 371 | func (stream, "%d", int_value); |
| 372 | else if (!psys_reg) |
| 373 | func (stream, "???"); |
| 374 | else |
| 375 | { |
| 376 | if (pfd->hw_res == HW_GPR || pfd->hw_res == HW_CPR |
| 377 | || pfd->hw_res == HW_FDR || pfd->hw_res == HW_FSR |
| 378 | || pfd->hw_res == HW_DXR || pfd->hw_res == HW_SR |
| 379 | || pfd->hw_res == HW_USR) |
| 380 | func (stream, "$%s", psys_reg->name); |
| 381 | else if (pfd->hw_res == HW_DTITON |
| 382 | || pfd->hw_res == HW_DTITOFF) |
| 383 | func (stream, ".%s", psys_reg->name); |
| 384 | else |
| 385 | func (stream, "%s", psys_reg->name); |
| 386 | } |
| 387 | } |
| 388 | else if ((pfd->hw_res == HW_INT) || (pfd->hw_res == HW_UINT)) |
| 389 | { |
| 390 | if (pfd->hw_res == HW_INT) |
| 391 | int_value = (unsigned) N32_IMMS (insn >> pfd->bitpos, |
| 392 | pfd->bitsize) << pfd->shift; |
| 393 | else |
| 394 | int_value = |
| 395 | __GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift; |
| 396 | |
| 397 | if ((op == N32_OP6_BR1) || (op == N32_OP6_BR2)) |
| 398 | { |
| 399 | info->print_address_func (int_value + pc, info); |
| 400 | } |
| 401 | else if ((op == N32_OP6_BR3) && (pfd->bitpos == 0)) |
| 402 | { |
| 403 | info->print_address_func (int_value + pc, info); |
| 404 | } |
| 405 | else if (op == N32_OP6_JI) |
| 406 | { |
| 407 | /* FIXME: Handle relocation. */ |
| 408 | if (info->flags & INSN_HAS_RELOC) |
| 409 | pc = 0; |
| 410 | info->print_address_func (int_value + pc, info); |
| 411 | } |
| 412 | else if (op == N32_OP6_LSMW) |
| 413 | { |
| 414 | /* lmw.adm/smw.adm. */ |
| 415 | func (stream, "#0x%x ! {", int_value); |
| 416 | lsmwEnb4 = int_value; |
| 417 | lsmwRb = ((insn >> 20) & 0x1F); |
| 418 | lsmwRe = ((insn >> 10) & 0x1F); |
| 419 | |
| 420 | /* If [Rb, Re] specifies at least one register, |
| 421 | Rb(4,0) <= Re(4,0) and 0 <= Rb(4,0), Re(4,0) < 28. |
| 422 | Disassembling does not consider this currently because of |
| 423 | the convience comparing with bsp320. */ |
| 424 | if (lsmwRb != 31 || lsmwRe != 31) |
| 425 | { |
| 426 | func (stream, "$%s", nds32_keyword_gpr[lsmwRb].name); |
| 427 | if (lsmwRb != lsmwRe) |
| 428 | func (stream, "~$%s", nds32_keyword_gpr[lsmwRe].name); |
| 429 | ifthe1st = 0; |
| 430 | } |
| 431 | if (lsmwEnb4 != 0) |
| 432 | { |
| 433 | /* $fp, $gp, $lp, $sp. */ |
| 434 | checkbit = 0x08; |
| 435 | for (i = 0; i < 4; i++) |
| 436 | { |
| 437 | if (lsmwEnb4 & checkbit) |
| 438 | { |
| 439 | if (ifthe1st == 1) |
| 440 | { |
| 441 | ifthe1st = 0; |
| 442 | func (stream, "$%s", nds32_keyword_gpr[28 + i].name); |
| 443 | } |
| 444 | else |
| 445 | func (stream, ", $%s", nds32_keyword_gpr[28 + i].name); |
| 446 | } |
| 447 | checkbit >>= 1; |
| 448 | } |
| 449 | } |
| 450 | func (stream, "}"); |
| 451 | } |
| 452 | else if (pfd->hw_res == HW_INT) |
| 453 | { |
| 454 | if (int_value < 10) |
| 455 | func (stream, "#%d", int_value); |
| 456 | else |
| 457 | func (stream, "#0x%x", int_value); |
| 458 | } |
| 459 | else /* if (pfd->hw_res == HW_UINT). */ |
| 460 | { |
| 461 | if (int_value < 10) |
| 462 | func (stream, "#%u", int_value); |
| 463 | else |
| 464 | func (stream, "#0x%x", int_value); |
| 465 | } |
| 466 | } |
| 467 | break; |
| 468 | |
| 469 | case '{': |
| 470 | case '}': |
| 471 | pstr_src++; |
| 472 | break; |
| 473 | |
| 474 | case ',': |
| 475 | func (stream, ", "); |
| 476 | pstr_src++; |
| 477 | break; |
| 478 | |
| 479 | case '+': |
| 480 | func (stream, " + "); |
| 481 | pstr_src++; |
| 482 | break; |
| 483 | |
| 484 | case '<': |
| 485 | if (pstr_src[1] == '<') |
| 486 | { |
| 487 | func (stream, " << "); |
| 488 | pstr_src += 2; |
| 489 | } |
| 490 | else |
| 491 | { |
| 492 | func (stream, " <"); |
| 493 | pstr_src++; |
| 494 | } |
| 495 | break; |
| 496 | |
| 497 | default: |
| 498 | func (stream, "%c", *pstr_src++); |
| 499 | break; |
| 500 | } |
| 501 | } |
| 502 | } |
| 503 | |
| 504 | /* Filter instructions with some bits must be fixed. */ |
| 505 | |
| 506 | static void |
| 507 | nds32_filter_unknown_insn (uint32_t insn, struct nds32_opcode **opc) |
| 508 | { |
| 509 | if (!(*opc)) |
| 510 | return; |
| 511 | |
| 512 | switch ((*opc)->value) |
| 513 | { |
| 514 | case JREG (JR): |
| 515 | case JREG (JRNEZ): |
| 516 | /* jr jr.xtoff */ |
| 517 | if (__GF (insn, 6, 2) != 0 || __GF (insn, 15, 10) != 0) |
| 518 | *opc = NULL; |
| 519 | break; |
| 520 | case MISC (STANDBY): |
| 521 | if (__GF (insn, 7, 18) != 0) |
| 522 | *opc = NULL; |
| 523 | break; |
| 524 | case SIMD (PBSAD): |
| 525 | case SIMD (PBSADA): |
| 526 | if (__GF (insn, 5, 5) != 0) |
| 527 | *opc = NULL; |
| 528 | break; |
| 529 | case BR2 (SOP0): |
| 530 | if (__GF (insn, 20, 5) != 0) |
| 531 | *opc = NULL; |
| 532 | break; |
| 533 | case JREG (JRAL): |
| 534 | if (__GF (insn, 5, 3) != 0 || __GF (insn, 15, 5) != 0) |
| 535 | *opc = NULL; |
| 536 | break; |
| 537 | case ALU1 (NOR): |
| 538 | case ALU1 (SLT): |
| 539 | case ALU1 (SLTS): |
| 540 | case ALU1 (SLLI): |
| 541 | case ALU1 (SRLI): |
| 542 | case ALU1 (SRAI): |
| 543 | case ALU1 (ROTRI): |
| 544 | case ALU1 (SLL): |
| 545 | case ALU1 (SRL): |
| 546 | case ALU1 (SRA): |
| 547 | case ALU1 (ROTR): |
| 548 | case ALU1 (SEB): |
| 549 | case ALU1 (SEH): |
| 550 | case ALU1 (ZEH): |
| 551 | case ALU1 (WSBH): |
| 552 | case ALU1 (SVA): |
| 553 | case ALU1 (SVS): |
| 554 | case ALU1 (CMOVZ): |
| 555 | case ALU1 (CMOVN): |
| 556 | if (__GF (insn, 5, 5) != 0) |
| 557 | *opc = NULL; |
| 558 | break; |
| 559 | case MISC (IRET): |
| 560 | case MISC (ISB): |
| 561 | case MISC (DSB): |
| 562 | if (__GF (insn, 5, 20) != 0) |
| 563 | *opc = NULL; |
| 564 | break; |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | static void |
| 569 | print_insn32 (bfd_vma pc, disassemble_info *info, uint32_t insn, |
| 570 | uint32_t parse_mode) |
| 571 | { |
| 572 | /* Get the final correct opcode and parse. */ |
| 573 | struct nds32_opcode *opc; |
| 574 | uint32_t opcode = nds32_mask_opcode (insn); |
| 575 | opc = (struct nds32_opcode *) htab_find (opcode_htab, &opcode); |
| 576 | |
| 577 | nds32_special_opcode (insn, &opc); |
| 578 | nds32_filter_unknown_insn (insn, &opc); |
| 579 | nds32_parse_opcode (opc, pc, info, insn, parse_mode); |
| 580 | } |
| 581 | |
| 582 | static void |
| 583 | print_insn16 (bfd_vma pc, disassemble_info *info, |
| 584 | uint32_t insn, uint32_t parse_mode) |
| 585 | { |
| 586 | struct nds32_opcode *opc; |
| 587 | uint32_t opcode; |
| 588 | |
| 589 | /* Get highest 7 bit in default. */ |
| 590 | unsigned int mask = 0xfe00; |
| 591 | |
| 592 | /* Classify 16-bit instruction to 4 sets by bit 13 and 14. */ |
| 593 | switch (__GF (insn, 13, 2)) |
| 594 | { |
| 595 | case 0x0: |
| 596 | /* mov55 movi55 */ |
| 597 | if (__GF (insn, 11, 2) == 0) |
| 598 | { |
| 599 | mask = 0xfc00; |
| 600 | /* ifret16 = mov55 $sp, $sp*/ |
| 601 | if (__GF (insn, 0, 11) == 0x3ff) |
| 602 | mask = 0xffff; |
| 603 | } |
| 604 | else if (__GF (insn, 9, 4) == 0xb) |
| 605 | mask = 0xfe07; |
| 606 | break; |
| 607 | case 0x1: |
| 608 | /* lwi37 swi37 */ |
| 609 | if (__GF (insn, 11, 2) == 0x3) |
| 610 | mask = 0xf880; |
| 611 | break; |
| 612 | case 0x2: |
| 613 | mask = 0xf800; |
| 614 | /* Exclude beqz38, bnez38, beqs38, and bnes38. */ |
| 615 | if (__GF (insn, 12, 1) == 0x1 |
| 616 | && __GF (insn, 8, 3) == 0x5) |
| 617 | { |
| 618 | if (__GF (insn, 11, 1) == 0x0) |
| 619 | mask = 0xff00; |
| 620 | else |
| 621 | mask = 0xffe0; |
| 622 | } |
| 623 | break; |
| 624 | case 0x3: |
| 625 | switch (__GF (insn, 11, 2)) |
| 626 | { |
| 627 | case 0x1: |
| 628 | /* beqzs8 bnezs8 */ |
| 629 | if (__GF (insn, 9, 2) == 0x0) |
| 630 | mask = 0xff00; |
| 631 | /* addi10s */ |
| 632 | else if (__GF(insn, 10, 1) == 0x1) |
| 633 | mask = 0xfc00; |
| 634 | break; |
| 635 | case 0x2: |
| 636 | /* lwi37.sp swi37.sp */ |
| 637 | mask = 0xf880; |
| 638 | break; |
| 639 | case 0x3: |
| 640 | if (__GF (insn, 8, 3) == 0x5) |
| 641 | mask = 0xff00; |
| 642 | else if (__GF (insn, 8, 3) == 0x4) |
| 643 | mask = 0xff80; |
| 644 | else if (__GF (insn, 9 , 2) == 0x3) |
| 645 | mask = 0xfe07; |
| 646 | break; |
| 647 | } |
| 648 | break; |
| 649 | } |
| 650 | opcode = insn & mask; |
| 651 | opc = (struct nds32_opcode *) htab_find (opcode_htab, &opcode); |
| 652 | |
| 653 | nds32_special_opcode (insn, &opc); |
| 654 | /* Get the final correct opcode and parse it. */ |
| 655 | nds32_parse_opcode (opc, pc, info, insn, parse_mode); |
| 656 | } |
| 657 | |
| 658 | static hashval_t |
| 659 | htab_hash_hash (const void *p) |
| 660 | { |
| 661 | return (*(unsigned int *) p) % 49; |
| 662 | } |
| 663 | |
| 664 | static int |
| 665 | htab_hash_eq (const void *p, const void *q) |
| 666 | { |
| 667 | uint32_t pinsn = ((struct nds32_opcode *) p)->value; |
| 668 | uint32_t qinsn = *((uint32_t *) q); |
| 669 | |
| 670 | return (pinsn == qinsn); |
| 671 | } |
| 672 | |
| 673 | /* Get the format of instruction. */ |
| 674 | |
| 675 | static uint32_t |
| 676 | nds32_mask_opcode (uint32_t insn) |
| 677 | { |
| 678 | uint32_t opcode = N32_OP6 (insn); |
| 679 | switch (opcode) |
| 680 | { |
| 681 | case N32_OP6_LBI: |
| 682 | case N32_OP6_LHI: |
| 683 | case N32_OP6_LWI: |
| 684 | case N32_OP6_LDI: |
| 685 | case N32_OP6_LBI_BI: |
| 686 | case N32_OP6_LHI_BI: |
| 687 | case N32_OP6_LWI_BI: |
| 688 | case N32_OP6_LDI_BI: |
| 689 | case N32_OP6_SBI: |
| 690 | case N32_OP6_SHI: |
| 691 | case N32_OP6_SWI: |
| 692 | case N32_OP6_SDI: |
| 693 | case N32_OP6_SBI_BI: |
| 694 | case N32_OP6_SHI_BI: |
| 695 | case N32_OP6_SWI_BI: |
| 696 | case N32_OP6_SDI_BI: |
| 697 | case N32_OP6_LBSI: |
| 698 | case N32_OP6_LHSI: |
| 699 | case N32_OP6_LWSI: |
| 700 | case N32_OP6_LBSI_BI: |
| 701 | case N32_OP6_LHSI_BI: |
| 702 | case N32_OP6_LWSI_BI: |
| 703 | case N32_OP6_MOVI: |
| 704 | case N32_OP6_SETHI: |
| 705 | case N32_OP6_ADDI: |
| 706 | case N32_OP6_SUBRI: |
| 707 | case N32_OP6_ANDI: |
| 708 | case N32_OP6_XORI: |
| 709 | case N32_OP6_ORI: |
| 710 | case N32_OP6_SLTI: |
| 711 | case N32_OP6_SLTSI: |
| 712 | case N32_OP6_CEXT: |
| 713 | case N32_OP6_BITCI: |
| 714 | return MASK_OP (insn, 0); |
| 715 | case N32_OP6_ALU2: |
| 716 | /* FFBI */ |
| 717 | if (__GF (insn, 0, 7) == (N32_ALU2_FFBI | N32_BIT (6))) |
| 718 | return MASK_OP (insn, 0x7f); |
| 719 | else if (__GF (insn, 0, 7) == (N32_ALU2_MFUSR | N32_BIT (6)) |
| 720 | || __GF (insn, 0, 7) == (N32_ALU2_MTUSR | N32_BIT (6))) |
| 721 | /* RDOV CLROV */ |
| 722 | return MASK_OP (insn, 0xf81ff); |
| 723 | else if (__GF (insn, 0, 10) == (N32_ALU2_ONEOP | N32_BIT (7))) |
| 724 | { |
| 725 | /* INSB */ |
| 726 | if (__GF (insn, 12, 3) == 4) |
| 727 | return MASK_OP (insn, 0x73ff); |
| 728 | return MASK_OP (insn, 0x7fff); |
| 729 | } |
| 730 | return MASK_OP (insn, 0x3ff); |
| 731 | case N32_OP6_ALU1: |
| 732 | case N32_OP6_SIMD: |
| 733 | return MASK_OP (insn, 0x1f); |
| 734 | case N32_OP6_MEM: |
| 735 | return MASK_OP (insn, 0xff); |
| 736 | case N32_OP6_JREG: |
| 737 | return MASK_OP (insn, 0x7f); |
| 738 | case N32_OP6_LSMW: |
| 739 | return MASK_OP (insn, 0x23); |
| 740 | case N32_OP6_SBGP: |
| 741 | case N32_OP6_LBGP: |
| 742 | return MASK_OP (insn, 0x1 << 19); |
| 743 | case N32_OP6_HWGP: |
| 744 | if (__GF (insn, 18, 2) == 0x3) |
| 745 | return MASK_OP (insn, 0x7 << 17); |
| 746 | return MASK_OP (insn, 0x3 << 18); |
| 747 | case N32_OP6_DPREFI: |
| 748 | return MASK_OP (insn, 0x1 << 24); |
| 749 | case N32_OP6_LWC: |
| 750 | case N32_OP6_SWC: |
| 751 | case N32_OP6_LDC: |
| 752 | case N32_OP6_SDC: |
| 753 | return MASK_OP (insn, 0x1 << 12); |
| 754 | case N32_OP6_JI: |
| 755 | return MASK_OP (insn, 0x1 << 24); |
| 756 | case N32_OP6_BR1: |
| 757 | return MASK_OP (insn, 0x1 << 14); |
| 758 | case N32_OP6_BR2: |
| 759 | if (__GF (insn, 16, 4) == 0) |
| 760 | return MASK_OP (insn, 0x1ff << 16); |
| 761 | else |
| 762 | return MASK_OP (insn, 0xf << 16); |
| 763 | case N32_OP6_BR3: |
| 764 | return MASK_OP (insn, 0x1 << 19); |
| 765 | case N32_OP6_MISC: |
| 766 | switch (__GF (insn, 0, 5)) |
| 767 | { |
| 768 | case N32_MISC_MTSR: |
| 769 | /* SETGIE and SETEND */ |
| 770 | if (__GF (insn, 5, 5) == 0x1 || __GF (insn, 5, 5) == 0x2) |
| 771 | return MASK_OP (insn, 0x1fffff); |
| 772 | return MASK_OP (insn, 0x1f); |
| 773 | case N32_MISC_TLBOP: |
| 774 | if (__GF (insn, 5, 5) == 5 || __GF (insn, 5, 5) == 7) |
| 775 | /* PB FLUA */ |
| 776 | return MASK_OP (insn, 0x3ff); |
| 777 | return MASK_OP (insn, 0x1f); |
| 778 | default: |
| 779 | return MASK_OP (insn, 0x1f); |
| 780 | } |
| 781 | case N32_OP6_COP: |
| 782 | if (__GF (insn, 4, 2) == 0) |
| 783 | { |
| 784 | /* FPU */ |
| 785 | switch (__GF (insn, 0, 4)) |
| 786 | { |
| 787 | case 0x0: |
| 788 | case 0x8: |
| 789 | /* FS1/F2OP FD1/F2OP */ |
| 790 | if (__GF (insn, 6, 4) == 0xf) |
| 791 | return MASK_OP (insn, 0x7fff); |
| 792 | /* FS1 FD1 */ |
| 793 | return MASK_OP (insn, 0x3ff); |
| 794 | case 0x4: |
| 795 | case 0xc: |
| 796 | /* FS2 */ |
| 797 | return MASK_OP (insn, 0x3ff); |
| 798 | case 0x1: |
| 799 | case 0x9: |
| 800 | /* XR */ |
| 801 | if (__GF (insn, 6, 4) == 0xc) |
| 802 | return MASK_OP (insn, 0x7fff); |
| 803 | /* MFCP MTCP */ |
| 804 | return MASK_OP (insn, 0x3ff); |
| 805 | default: |
| 806 | return MASK_OP (insn, 0xff); |
| 807 | } |
| 808 | } |
| 809 | else if (__GF (insn, 0, 2) == 0) |
| 810 | return MASK_OP (insn, 0xf); |
| 811 | return MASK_OP (insn, 0xcf); |
| 812 | case N32_OP6_AEXT: |
| 813 | /* AUDIO */ |
| 814 | switch (__GF (insn, 23, 2)) |
| 815 | { |
| 816 | case 0x0: |
| 817 | if (__GF (insn, 5, 4) == 0) |
| 818 | /* AMxxx AMAyyS AMyyS AMAWzS AMWzS */ |
| 819 | return MASK_OP (insn, (0x1f << 20) | 0x1ff); |
| 820 | else if (__GF (insn, 5, 4) == 1) |
| 821 | /* ALR ASR ALA ASA AUPI */ |
| 822 | return MASK_OP (insn, (0x1f << 20) | (0xf << 5)); |
| 823 | else if (__GF (insn, 20, 3) == 0 && __GF (insn, 6, 3) == 1) |
| 824 | /* ALR2 */ |
| 825 | return MASK_OP (insn, (0x1f << 20) | (0x7 << 6)); |
| 826 | else if (__GF (insn, 20 ,3) == 2 && __GF (insn, 6, 3) == 1) |
| 827 | /* AWEXT ASATS48 */ |
| 828 | return MASK_OP (insn, (0x1f << 20) | (0xf << 5)); |
| 829 | else if (__GF (insn, 20 ,3) == 3 && __GF (insn, 6, 3) == 1) |
| 830 | /* AMTAR AMTAR2 AMFAR AMFAR2 */ |
| 831 | return MASK_OP (insn, (0x1f << 20) | (0x1f << 5)); |
| 832 | else if (__GF (insn, 7, 2) == 3) |
| 833 | /* AMxxxSA */ |
| 834 | return MASK_OP (insn, (0x1f << 20) | (0x3 << 7)); |
| 835 | else if (__GF (insn, 6, 3) == 2) |
| 836 | /* AMxxxL.S */ |
| 837 | return MASK_OP (insn, (0x1f << 20) | (0xf << 5)); |
| 838 | else |
| 839 | /* AmxxxL.l AmxxxL2.S AMxxxL2.L */ |
| 840 | return MASK_OP (insn, (0x1f << 20) | (0x7 << 6)); |
| 841 | case 0x1: |
| 842 | if (__GF (insn, 20, 3) == 0) |
| 843 | /* AADDL ASUBL */ |
| 844 | return MASK_OP (insn, (0x1f << 20) | (0x1 << 5)); |
| 845 | else if (__GF (insn, 20, 3) == 1) |
| 846 | /* AMTARI Ix AMTARI Mx */ |
| 847 | return MASK_OP (insn, (0x1f << 20)); |
| 848 | else if (__GF (insn, 6, 3) == 2) |
| 849 | /* AMAWzSl.S AMWzSl.S */ |
| 850 | return MASK_OP (insn, (0x1f << 20) | (0xf << 5)); |
| 851 | else if (__GF (insn, 7, 2) == 3) |
| 852 | /* AMAWzSSA AMWzSSA */ |
| 853 | return MASK_OP (insn, (0x1f << 20) | (0x3 << 7)); |
| 854 | else |
| 855 | /* AMAWzSL.L AMAWzSL2.S AMAWzSL2.L |
| 856 | AMWzSL.L AMWzSL.L AMWzSL2.S */ |
| 857 | return MASK_OP (insn, (0x1f << 20) | (0x7 << 6)); |
| 858 | case 0x2: |
| 859 | if (__GF (insn, 6, 3) == 2) |
| 860 | /* AMAyySl.S AMWyySl.S */ |
| 861 | return MASK_OP (insn, (0x1f << 20) | (0xf << 5)); |
| 862 | else if (__GF (insn, 7, 2) == 3) |
| 863 | /* AMAWyySSA AMWyySSA */ |
| 864 | return MASK_OP (insn, (0x1f << 20) | (0x3 << 7)); |
| 865 | else |
| 866 | /* AMAWyySL.L AMAWyySL2.S AMAWyySL2.L |
| 867 | AMWyySL.L AMWyySL.L AMWyySL2.S */ |
| 868 | return MASK_OP (insn, (0x1f << 20) | (0x7 << 6)); |
| 869 | } |
| 870 | return MASK_OP (insn, 0x1f << 20); |
| 871 | default: |
| 872 | return 1u << 31; |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | /* Define cctl subtype. */ |
| 877 | static char *cctl_subtype [] = |
| 878 | { |
| 879 | /* 0x0 */ |
| 880 | "st0", "st0", "st0", "st2", "st2", "st3", "st3", "st4", |
| 881 | "st1", "st1", "st1", "st0", "st0", NULL, NULL, "st5", |
| 882 | /* 0x10 */ |
| 883 | "st0", NULL, NULL, "st2", "st2", "st3", "st3", NULL, |
| 884 | "st1", NULL, NULL, "st0", "st0", NULL, NULL, NULL |
| 885 | }; |
| 886 | |
| 887 | /* Check the subset of opcode. */ |
| 888 | |
| 889 | static void |
| 890 | nds32_special_opcode (uint32_t insn, struct nds32_opcode **opc) |
| 891 | { |
| 892 | char *string = NULL; |
| 893 | uint32_t op; |
| 894 | |
| 895 | if (!(*opc)) |
| 896 | return; |
| 897 | |
| 898 | /* Check if special case. */ |
| 899 | switch ((*opc)->value) |
| 900 | { |
| 901 | case OP6 (LWC): |
| 902 | case OP6 (SWC): |
| 903 | case OP6 (LDC): |
| 904 | case OP6 (SDC): |
| 905 | case FPU_RA_IMMBI (LWC): |
| 906 | case FPU_RA_IMMBI (SWC): |
| 907 | case FPU_RA_IMMBI (LDC): |
| 908 | case FPU_RA_IMMBI (SDC): |
| 909 | /* Check if cp0 => FPU. */ |
| 910 | if (__GF (insn, 13, 2) == 0) |
| 911 | { |
| 912 | while (!((*opc)->attr & ATTR (FPU)) && (*opc)->next) |
| 913 | *opc = (*opc)->next; |
| 914 | } |
| 915 | break; |
| 916 | case ALU1 (ADD): |
| 917 | case ALU1 (SUB): |
| 918 | case ALU1 (AND): |
| 919 | case ALU1 (XOR): |
| 920 | case ALU1 (OR): |
| 921 | /* Check if (add/add_slli) (sub/sub_slli) (and/and_slli). */ |
| 922 | if (N32_SH5(insn) != 0) |
| 923 | string = "sh"; |
| 924 | break; |
| 925 | case ALU1 (SRLI): |
| 926 | /* Check if nop. */ |
| 927 | if (__GF (insn, 10, 15) == 0) |
| 928 | string = "nop"; |
| 929 | break; |
| 930 | case MISC (CCTL): |
| 931 | string = cctl_subtype [__GF (insn, 5, 5)]; |
| 932 | break; |
| 933 | case JREG (JR): |
| 934 | case JREG (JRAL): |
| 935 | case JREG (JR) | JREG_RET: |
| 936 | if (__GF (insn, 8, 2) != 0) |
| 937 | string = "tit"; |
| 938 | break; |
| 939 | case N32_OP6_COP: |
| 940 | break; |
| 941 | case 0x9200: |
| 942 | /* nop16 */ |
| 943 | if (__GF (insn, 0, 9) == 0) |
| 944 | string = "nop16"; |
| 945 | break; |
| 946 | } |
| 947 | |
| 948 | if (string) |
| 949 | { |
| 950 | while (strstr ((*opc)->opcode, string) == NULL |
| 951 | && strstr ((*opc)->instruction, string) == NULL && (*opc)->next) |
| 952 | *opc = (*opc)->next; |
| 953 | return; |
| 954 | } |
| 955 | |
| 956 | /* Classify instruction is COP or FPU. */ |
| 957 | op = N32_OP6 (insn); |
| 958 | if (op == N32_OP6_COP && __GF (insn, 4, 2) != 0) |
| 959 | { |
| 960 | while (((*opc)->attr & ATTR (FPU)) != 0 && (*opc)->next) |
| 961 | *opc = (*opc)->next; |
| 962 | } |
| 963 | } |
| 964 | |
| 965 | int |
| 966 | print_insn_nds32 (bfd_vma pc, disassemble_info *info) |
| 967 | { |
| 968 | int status; |
| 969 | bfd_byte buf[4]; |
| 970 | bfd_byte buf_data[16]; |
| 971 | uint64_t given; |
| 972 | uint64_t given1; |
| 973 | uint32_t insn; |
| 974 | int n; |
| 975 | int last_symbol_index = -1; |
| 976 | bfd_vma addr; |
| 977 | int is_data = false; |
| 978 | bool found = false; |
| 979 | struct nds32_private_data *private_data; |
| 980 | unsigned int size; |
| 981 | enum map_type mapping_type = MAP_CODE; |
| 982 | |
| 983 | if (info->private_data == NULL) |
| 984 | { |
| 985 | /* Note: remain lifecycle throughout whole execution. */ |
| 986 | static struct nds32_private_data private; |
| 987 | private.has_mapping_symbols = -1; /* unknown yet. */ |
| 988 | private.last_symbol_index = -1; |
| 989 | private.last_addr = 0; |
| 990 | info->private_data = &private; |
| 991 | } |
| 992 | private_data = info->private_data; |
| 993 | |
| 994 | if (info->symtab_size != 0) |
| 995 | { |
| 996 | int start; |
| 997 | if (pc == 0) |
| 998 | start = 0; |
| 999 | else |
| 1000 | { |
| 1001 | start = info->symtab_pos; |
| 1002 | if (start < private_data->last_symbol_index) |
| 1003 | start = private_data->last_symbol_index; |
| 1004 | } |
| 1005 | |
| 1006 | if (0 > start) |
| 1007 | start = 0; |
| 1008 | |
| 1009 | if (private_data->has_mapping_symbols != 0 |
| 1010 | && ((strncmp (".text", info->section->name, 5) == 0))) |
| 1011 | { |
| 1012 | for (n = start; n < info->symtab_size; n++) |
| 1013 | { |
| 1014 | addr = bfd_asymbol_value (info->symtab[n]); |
| 1015 | if (addr > pc) |
| 1016 | break; |
| 1017 | if (get_mapping_symbol_type (info, n, &mapping_type)) |
| 1018 | { |
| 1019 | last_symbol_index = n; |
| 1020 | found = true; |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | if (found) |
| 1025 | private_data->has_mapping_symbols = 1; |
| 1026 | else if (!found && private_data->has_mapping_symbols == -1) |
| 1027 | { |
| 1028 | /* Make sure there are no any mapping symbol. */ |
| 1029 | for (n = 0; n < info->symtab_size; n++) |
| 1030 | { |
| 1031 | if (is_mapping_symbol (info, n, &mapping_type)) |
| 1032 | { |
| 1033 | private_data->has_mapping_symbols = -1; |
| 1034 | break; |
| 1035 | } |
| 1036 | } |
| 1037 | if (private_data->has_mapping_symbols == -1) |
| 1038 | private_data->has_mapping_symbols = 0; |
| 1039 | } |
| 1040 | |
| 1041 | private_data->last_symbol_index = last_symbol_index; |
| 1042 | private_data->last_mapping_type = mapping_type; |
| 1043 | is_data = (private_data->last_mapping_type == MAP_DATA0 |
| 1044 | || private_data->last_mapping_type == MAP_DATA1 |
| 1045 | || private_data->last_mapping_type == MAP_DATA2 |
| 1046 | || private_data->last_mapping_type == MAP_DATA3 |
| 1047 | || private_data->last_mapping_type == MAP_DATA4); |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | /* Wonder data or instruction. */ |
| 1052 | if (is_data) |
| 1053 | { |
| 1054 | unsigned int i1; |
| 1055 | |
| 1056 | /* Fix corner case: there is no next mapping symbol, |
| 1057 | let mapping type decides size */ |
| 1058 | size = 16; |
| 1059 | if (last_symbol_index + 1 >= info->symtab_size) |
| 1060 | { |
| 1061 | if (mapping_type == MAP_DATA0) |
| 1062 | size = 1; |
| 1063 | if (mapping_type == MAP_DATA1) |
| 1064 | size = 2; |
| 1065 | if (mapping_type == MAP_DATA2) |
| 1066 | size = 4; |
| 1067 | if (mapping_type == MAP_DATA3) |
| 1068 | size = 8; |
| 1069 | if (mapping_type == MAP_DATA4) |
| 1070 | size = 16; |
| 1071 | } |
| 1072 | for (n = last_symbol_index + 1; n < info->symtab_size; n++) |
| 1073 | { |
| 1074 | addr = bfd_asymbol_value (info->symtab[n]); |
| 1075 | |
| 1076 | enum map_type fake_mapping_type; |
| 1077 | if (get_mapping_symbol_type (info, n, &fake_mapping_type) |
| 1078 | && (addr > pc |
| 1079 | && ((info->section == NULL) |
| 1080 | || (info->section == info->symtab[n]->section))) |
| 1081 | && (addr - pc < size)) |
| 1082 | { |
| 1083 | size = addr - pc; |
| 1084 | break; |
| 1085 | } |
| 1086 | } |
| 1087 | |
| 1088 | if (size == 3) |
| 1089 | size = (pc & 1) ? 1 : 2; |
| 1090 | |
| 1091 | /* Read bytes from BFD. */ |
| 1092 | info->read_memory_func (pc, buf_data, size, info); |
| 1093 | given = 0; |
| 1094 | given1 = 0; |
| 1095 | /* Start assembling data. */ |
| 1096 | /* Little endian of data. */ |
| 1097 | if (info->endian == BFD_ENDIAN_LITTLE) |
| 1098 | { |
| 1099 | for (i1 = size - 1;; i1--) |
| 1100 | { |
| 1101 | if (i1 >= 8) |
| 1102 | given1 = buf_data[i1] | (given1 << 8); |
| 1103 | else |
| 1104 | given = buf_data[i1] | (given << 8); |
| 1105 | |
| 1106 | if (i1 == 0) |
| 1107 | break; |
| 1108 | } |
| 1109 | } |
| 1110 | else |
| 1111 | { |
| 1112 | /* Big endian of data. */ |
| 1113 | for (i1 = 0; i1 < size; i1++) |
| 1114 | { |
| 1115 | if (i1 <= 7) |
| 1116 | given = buf_data[i1] | (given << 8); |
| 1117 | else |
| 1118 | given1 = buf_data[i1] | (given1 << 8); |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | info->bytes_per_line = 4; |
| 1123 | |
| 1124 | if (size == 16) |
| 1125 | info->fprintf_func (info->stream, ".qword\t0x%016" PRIx64 "%016" PRIx64, |
| 1126 | given, given1); |
| 1127 | else if (size == 8) |
| 1128 | info->fprintf_func (info->stream, ".dword\t0x%016" PRIx64, given); |
| 1129 | else if (size == 4) |
| 1130 | info->fprintf_func (info->stream, ".word\t0x%08" PRIx64, given); |
| 1131 | else if (size == 2) |
| 1132 | { |
| 1133 | /* short */ |
| 1134 | if (mapping_type == MAP_DATA0) |
| 1135 | info->fprintf_func (info->stream, ".byte\t0x%02" PRIx64, |
| 1136 | given & 0xFF); |
| 1137 | else |
| 1138 | info->fprintf_func (info->stream, ".short\t0x%04" PRIx64, given); |
| 1139 | } |
| 1140 | else |
| 1141 | { |
| 1142 | /* byte */ |
| 1143 | info->fprintf_func (info->stream, ".byte\t0x%02" PRIx64, given); |
| 1144 | } |
| 1145 | |
| 1146 | return size; |
| 1147 | } |
| 1148 | |
| 1149 | size = 4; |
| 1150 | status = info->read_memory_func (pc, buf, 4, info); |
| 1151 | if (status) |
| 1152 | { |
| 1153 | /* For the last 16-bit instruction. */ |
| 1154 | size = 2; |
| 1155 | status = info->read_memory_func (pc, buf, 2, info); |
| 1156 | if (status) |
| 1157 | { |
| 1158 | (*info->memory_error_func) (status, pc, info); |
| 1159 | return -1; |
| 1160 | } |
| 1161 | buf[2] = 0; |
| 1162 | buf[3] = 0; |
| 1163 | } |
| 1164 | |
| 1165 | insn = bfd_getb32 (buf); |
| 1166 | /* 16-bit instruction. */ |
| 1167 | if (insn & 0x80000000) |
| 1168 | { |
| 1169 | print_insn16 (pc, info, (insn >> 16), NDS32_PARSE_INSN16); |
| 1170 | return 2; |
| 1171 | } |
| 1172 | |
| 1173 | /* 32-bit instructions. */ |
| 1174 | if (size == 4) |
| 1175 | print_insn32 (pc, info, insn, NDS32_PARSE_INSN32); |
| 1176 | else |
| 1177 | info->fprintf_func (info->stream, |
| 1178 | _("insufficient data to decode instruction")); |
| 1179 | return 4; |
| 1180 | } |
| 1181 | |
| 1182 | /* Ignore disassembling unnecessary name. */ |
| 1183 | |
| 1184 | static bool |
| 1185 | nds32_symbol_is_valid (asymbol *sym, |
| 1186 | struct disassemble_info *info ATTRIBUTE_UNUSED) |
| 1187 | { |
| 1188 | const char *name; |
| 1189 | |
| 1190 | if (sym == NULL) |
| 1191 | return false; |
| 1192 | |
| 1193 | name = bfd_asymbol_name (sym); |
| 1194 | |
| 1195 | /* Mapping symbol is invalid. */ |
| 1196 | if (name[0] == '$') |
| 1197 | return false; |
| 1198 | return true; |
| 1199 | } |
| 1200 | |
| 1201 | static void |
| 1202 | nds32_add_opcode_hash_table (unsigned indx) |
| 1203 | { |
| 1204 | opcode_t *opc; |
| 1205 | |
| 1206 | opc = nds32_opcode_table[indx]; |
| 1207 | if (opc == NULL) |
| 1208 | return; |
| 1209 | |
| 1210 | while (opc->opcode != NULL) |
| 1211 | { |
| 1212 | opcode_t **slot; |
| 1213 | |
| 1214 | slot = (opcode_t **) htab_find_slot |
| 1215 | (opcode_htab, &opc->value, INSERT); |
| 1216 | if (*slot == NULL) |
| 1217 | { |
| 1218 | /* This is the new one. */ |
| 1219 | *slot = opc; |
| 1220 | } |
| 1221 | else |
| 1222 | { |
| 1223 | opcode_t *tmp; |
| 1224 | |
| 1225 | /* Already exists. Append to the list. */ |
| 1226 | tmp = *slot; |
| 1227 | while (tmp->next) |
| 1228 | tmp = tmp->next; |
| 1229 | tmp->next = opc; |
| 1230 | opc->next = NULL; |
| 1231 | } |
| 1232 | opc++; |
| 1233 | } |
| 1234 | } |
| 1235 | |
| 1236 | void |
| 1237 | disassemble_init_nds32 (struct disassemble_info *info) |
| 1238 | { |
| 1239 | static unsigned init_done = 0; |
| 1240 | unsigned k; |
| 1241 | |
| 1242 | /* Set up symbol checking function. */ |
| 1243 | info->symbol_is_valid = nds32_symbol_is_valid; |
| 1244 | |
| 1245 | /* Only need to initialize once: |
| 1246 | High level will call this function for every object file. |
| 1247 | For example, when disassemble all members of a library. */ |
| 1248 | if (init_done) |
| 1249 | return; |
| 1250 | |
| 1251 | /* Setup main core. */ |
| 1252 | nds32_keyword_table[NDS32_MAIN_CORE] = &nds32_keywords[0]; |
| 1253 | nds32_opcode_table[NDS32_MAIN_CORE] = &nds32_opcodes[0]; |
| 1254 | nds32_field_table[NDS32_MAIN_CORE] = &nds32_operand_fields[0]; |
| 1255 | |
| 1256 | /* Build opcode table. */ |
| 1257 | opcode_htab = htab_create_alloc (1024, htab_hash_hash, htab_hash_eq, |
| 1258 | NULL, xcalloc, free); |
| 1259 | |
| 1260 | for (k = 0; k < NDS32_CORE_COUNT; k++) |
| 1261 | { |
| 1262 | /* Add op-codes. */ |
| 1263 | nds32_add_opcode_hash_table (k); |
| 1264 | } |
| 1265 | |
| 1266 | init_done = 1; |
| 1267 | } |
| 1268 | |
| 1269 | static int |
| 1270 | is_mapping_symbol (struct disassemble_info *info, int n, |
| 1271 | enum map_type *map_type) |
| 1272 | { |
| 1273 | const char *name = NULL; |
| 1274 | |
| 1275 | /* Get symbol name. */ |
| 1276 | name = bfd_asymbol_name (info->symtab[n]); |
| 1277 | |
| 1278 | if (name[1] == 'c') |
| 1279 | { |
| 1280 | *map_type = MAP_CODE; |
| 1281 | return true; |
| 1282 | } |
| 1283 | else if (name[1] == 'd' && name[2] == '0') |
| 1284 | { |
| 1285 | *map_type = MAP_DATA0; |
| 1286 | return true; |
| 1287 | } |
| 1288 | else if (name[1] == 'd' && name[2] == '1') |
| 1289 | { |
| 1290 | *map_type = MAP_DATA1; |
| 1291 | return true; |
| 1292 | } |
| 1293 | else if (name[1] == 'd' && name[2] == '2') |
| 1294 | { |
| 1295 | *map_type = MAP_DATA2; |
| 1296 | return true; |
| 1297 | } |
| 1298 | else if (name[1] == 'd' && name[2] == '3') |
| 1299 | { |
| 1300 | *map_type = MAP_DATA3; |
| 1301 | return true; |
| 1302 | } |
| 1303 | else if (name[1] == 'd' && name[2] == '4') |
| 1304 | { |
| 1305 | *map_type = MAP_DATA4; |
| 1306 | return true; |
| 1307 | } |
| 1308 | |
| 1309 | return false; |
| 1310 | } |
| 1311 | |
| 1312 | static int |
| 1313 | get_mapping_symbol_type (struct disassemble_info *info, int n, |
| 1314 | enum map_type *map_type) |
| 1315 | { |
| 1316 | /* If the symbol is in a different section, ignore it. */ |
| 1317 | if (info->section != NULL |
| 1318 | && info->section != info->symtab[n]->section) |
| 1319 | return false; |
| 1320 | |
| 1321 | return is_mapping_symbol (info, n, map_type); |
| 1322 | } |