| 1 | /* TI C6X disassembler. |
| 2 | Copyright (C) 2010-2014 Free Software Foundation, Inc. |
| 3 | Contributed by Joseph Myers <joseph@codesourcery.com> |
| 4 | Bernd Schmidt <bernds@codesourcery.com> |
| 5 | |
| 6 | This file is part of libopcodes. |
| 7 | |
| 8 | This library is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | It is distributed in the hope that it will be useful, but WITHOUT |
| 14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| 16 | License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | MA 02110-1301, USA. */ |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include "dis-asm.h" |
| 25 | #include "opcode/tic6x.h" |
| 26 | #include "libiberty.h" |
| 27 | |
| 28 | /* Define the instruction format table. */ |
| 29 | const tic6x_insn_format tic6x_insn_format_table[tic6x_insn_format_max] = |
| 30 | { |
| 31 | #define FMT(name, num_bits, cst_bits, mask, fields) \ |
| 32 | { num_bits, cst_bits, mask, fields }, |
| 33 | #include "opcode/tic6x-insn-formats.h" |
| 34 | #undef FMT |
| 35 | }; |
| 36 | |
| 37 | /* Define the control register table. */ |
| 38 | const tic6x_ctrl tic6x_ctrl_table[tic6x_ctrl_max] = |
| 39 | { |
| 40 | #define CTRL(name, isa, rw, crlo, crhi_mask) \ |
| 41 | { \ |
| 42 | STRINGX(name), \ |
| 43 | CONCAT2(TIC6X_INSN_,isa), \ |
| 44 | CONCAT2(tic6x_rw_,rw), \ |
| 45 | crlo, \ |
| 46 | crhi_mask \ |
| 47 | }, |
| 48 | #include "opcode/tic6x-control-registers.h" |
| 49 | #undef CTRL |
| 50 | }; |
| 51 | |
| 52 | /* Define the opcode table. */ |
| 53 | const tic6x_opcode tic6x_opcode_table[tic6x_opcode_max] = |
| 54 | { |
| 55 | #define INSNU(name, func_unit, format, type, isa, flags, fixed, ops, var) \ |
| 56 | { \ |
| 57 | STRINGX(name), \ |
| 58 | CONCAT2(tic6x_func_unit_,func_unit), \ |
| 59 | CONCAT3(tic6x_insn_format,_,format), \ |
| 60 | CONCAT2(tic6x_pipeline_,type), \ |
| 61 | CONCAT2(TIC6X_INSN_,isa), \ |
| 62 | flags, \ |
| 63 | fixed, \ |
| 64 | ops, \ |
| 65 | var \ |
| 66 | }, |
| 67 | #define INSNUE(name, e, func_unit, format, type, isa, flags, fixed, ops, var) \ |
| 68 | { \ |
| 69 | STRINGX(name), \ |
| 70 | CONCAT2(tic6x_func_unit_,func_unit), \ |
| 71 | CONCAT3(tic6x_insn_format,_,format), \ |
| 72 | CONCAT2(tic6x_pipeline_,type), \ |
| 73 | CONCAT2(TIC6X_INSN_,isa), \ |
| 74 | flags, \ |
| 75 | fixed, \ |
| 76 | ops, \ |
| 77 | var \ |
| 78 | }, |
| 79 | #define INSN(name, func_unit, format, type, isa, flags, fixed, ops, var) \ |
| 80 | { \ |
| 81 | STRINGX(name), \ |
| 82 | CONCAT2(tic6x_func_unit_,func_unit), \ |
| 83 | CONCAT4(tic6x_insn_format_,func_unit,_,format), \ |
| 84 | CONCAT2(tic6x_pipeline_,type), \ |
| 85 | CONCAT2(TIC6X_INSN_,isa), \ |
| 86 | flags, \ |
| 87 | fixed, \ |
| 88 | ops, \ |
| 89 | var \ |
| 90 | }, |
| 91 | #define INSNE(name, e, func_unit, format, type, isa, flags, fixed, ops, var) \ |
| 92 | { \ |
| 93 | STRINGX(name), \ |
| 94 | CONCAT2(tic6x_func_unit_,func_unit), \ |
| 95 | CONCAT4(tic6x_insn_format_,func_unit,_,format), \ |
| 96 | CONCAT2(tic6x_pipeline_,type), \ |
| 97 | CONCAT2(TIC6X_INSN_,isa), \ |
| 98 | flags, \ |
| 99 | fixed, \ |
| 100 | ops, \ |
| 101 | var \ |
| 102 | }, |
| 103 | #include "opcode/tic6x-opcode-table.h" |
| 104 | #undef INSN |
| 105 | #undef INSNE |
| 106 | #undef INSNU |
| 107 | #undef INSNUE |
| 108 | }; |
| 109 | |
| 110 | /* If instruction format FMT has a field FIELD, return a pointer to |
| 111 | the description of that field; otherwise return NULL. */ |
| 112 | |
| 113 | const tic6x_insn_field * |
| 114 | tic6x_field_from_fmt (const tic6x_insn_format *fmt, tic6x_insn_field_id field) |
| 115 | { |
| 116 | unsigned int f; |
| 117 | |
| 118 | for (f = 0; f < fmt->num_fields; f++) |
| 119 | if (fmt->fields[f].field_id == field) |
| 120 | return &fmt->fields[f]; |
| 121 | |
| 122 | return NULL; |
| 123 | } |
| 124 | |
| 125 | /* Extract the field width. */ |
| 126 | |
| 127 | static unsigned int |
| 128 | tic6x_field_width (const tic6x_insn_field *field) |
| 129 | { |
| 130 | unsigned int i; |
| 131 | unsigned int width = 0; |
| 132 | |
| 133 | if (!field->num_bitfields) |
| 134 | return field->bitfields[0].width; |
| 135 | |
| 136 | for (i = 0 ; i < field->num_bitfields ; i++) |
| 137 | width += field->bitfields[i].width; |
| 138 | |
| 139 | return width; |
| 140 | } |
| 141 | |
| 142 | /* Extract the bits corresponding to FIELD from OPCODE. */ |
| 143 | |
| 144 | static unsigned int |
| 145 | tic6x_field_bits (unsigned int opcode, const tic6x_insn_field *field) |
| 146 | { |
| 147 | unsigned int i; |
| 148 | unsigned int val = 0; |
| 149 | |
| 150 | if (!field->num_bitfields) |
| 151 | return (opcode >> field->bitfields[0].low_pos) & ((1u << field->bitfields[0].width) - 1); |
| 152 | |
| 153 | for (i = 0 ; i < field->num_bitfields ; i++) |
| 154 | val |= ((opcode >> field->bitfields[i].low_pos) & ((1u << field->bitfields[i].width) - 1)) |
| 155 | << field->bitfields[i].pos; |
| 156 | |
| 157 | return val; |
| 158 | } |
| 159 | |
| 160 | /* Extract a 32-bit value read from the instruction stream. */ |
| 161 | |
| 162 | static unsigned int |
| 163 | tic6x_extract_32 (unsigned char *p, struct disassemble_info *info) |
| 164 | { |
| 165 | if (info->endian == BFD_ENDIAN_LITTLE) |
| 166 | return (p[0]) | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); |
| 167 | else |
| 168 | return (p[3]) | (p[2] << 8) | (p[1] << 16) | (p[0] << 24); |
| 169 | } |
| 170 | |
| 171 | /* Extract a 16-bit value read from the instruction stream. */ |
| 172 | |
| 173 | static unsigned int |
| 174 | tic6x_extract_16 (unsigned char *p, tic6x_fetch_packet_header *header, |
| 175 | struct disassemble_info *info) |
| 176 | { |
| 177 | unsigned int op16; |
| 178 | |
| 179 | if (info->endian == BFD_ENDIAN_LITTLE) |
| 180 | op16 = (p[0]) | (p[1] << 8); |
| 181 | else |
| 182 | op16 = (p[1]) | (p[0] << 8); |
| 183 | op16 |= (header->sat << TIC6X_COMPACT_SAT_POS); |
| 184 | op16 |= (header->br << TIC6X_COMPACT_BR_POS); |
| 185 | op16 |= (header->dsz << TIC6X_COMPACT_DSZ_POS); |
| 186 | return op16; |
| 187 | } |
| 188 | |
| 189 | /* FP points to a fetch packet. Return whether it is header-based; if |
| 190 | it is, fill in HEADER. */ |
| 191 | |
| 192 | static bfd_boolean |
| 193 | tic6x_check_fetch_packet_header (unsigned char *fp, |
| 194 | tic6x_fetch_packet_header *header, |
| 195 | struct disassemble_info *info) |
| 196 | { |
| 197 | int i; |
| 198 | |
| 199 | header->header = tic6x_extract_32 (fp + 28, info); |
| 200 | |
| 201 | if ((header->header & 0xf0000000) != 0xe0000000) |
| 202 | { |
| 203 | header->prot = 0; |
| 204 | header->rs = 0; |
| 205 | header->dsz = 0; |
| 206 | header->br = 0; |
| 207 | header->sat = 0; |
| 208 | for (i = 0; i < 7; i++) |
| 209 | header->word_compact[i] = FALSE; |
| 210 | for (i = 0; i < 14; i++) |
| 211 | header->p_bits[i] = FALSE; |
| 212 | return FALSE; |
| 213 | } |
| 214 | |
| 215 | for (i = 0; i < 7; i++) |
| 216 | header->word_compact[i] |
| 217 | = (header->header & (1u << (21 + i))) ? TRUE : FALSE; |
| 218 | |
| 219 | header->prot = (header->header & (1u << 20)) ? TRUE : FALSE; |
| 220 | header->rs = (header->header & (1u << 19)) ? TRUE : FALSE; |
| 221 | header->dsz = (header->header >> 16) & 0x7; |
| 222 | header->br = (header->header & (1u << 15)) ? TRUE : FALSE; |
| 223 | header->sat = (header->header & (1u << 14)) ? TRUE : FALSE; |
| 224 | |
| 225 | for (i = 0; i < 14; i++) |
| 226 | header->p_bits[i] |
| 227 | = (header->header & (1u << i)) ? TRUE : FALSE; |
| 228 | |
| 229 | return TRUE; |
| 230 | } |
| 231 | |
| 232 | /* Disassemble the instruction at ADDR and print it using |
| 233 | INFO->FPRINTF_FUNC and INFO->STREAM, returning the number of bytes |
| 234 | consumed. */ |
| 235 | |
| 236 | int |
| 237 | print_insn_tic6x (bfd_vma addr, struct disassemble_info *info) |
| 238 | { |
| 239 | int status; |
| 240 | bfd_vma fp_addr; |
| 241 | bfd_vma fp_offset; |
| 242 | unsigned char fp[32]; |
| 243 | unsigned int opcode; |
| 244 | tic6x_opcode_id opcode_id; |
| 245 | bfd_boolean fetch_packet_header_based; |
| 246 | tic6x_fetch_packet_header header; |
| 247 | unsigned int num_bits; |
| 248 | bfd_boolean bad_offset = FALSE; |
| 249 | |
| 250 | fp_offset = addr & 0x1f; |
| 251 | fp_addr = addr - fp_offset; |
| 252 | status = info->read_memory_func (fp_addr, fp, 32, info); |
| 253 | if (status) |
| 254 | { |
| 255 | info->memory_error_func (status, addr, info); |
| 256 | return -1; |
| 257 | } |
| 258 | |
| 259 | fetch_packet_header_based |
| 260 | = tic6x_check_fetch_packet_header (fp, &header, info); |
| 261 | if (fetch_packet_header_based) |
| 262 | { |
| 263 | if (fp_offset & 0x1) |
| 264 | bad_offset = TRUE; |
| 265 | if ((fp_offset & 0x3) && (fp_offset >= 28 |
| 266 | || !header.word_compact[fp_offset >> 2])) |
| 267 | bad_offset = TRUE; |
| 268 | if (fp_offset == 28) |
| 269 | { |
| 270 | info->bytes_per_chunk = 4; |
| 271 | info->fprintf_func (info->stream, "<fetch packet header 0x%.8x>", |
| 272 | header.header); |
| 273 | return 4; |
| 274 | } |
| 275 | num_bits = (header.word_compact[fp_offset >> 2] ? 16 : 32); |
| 276 | } |
| 277 | else |
| 278 | { |
| 279 | num_bits = 32; |
| 280 | if (fp_offset & 0x3) |
| 281 | bad_offset = TRUE; |
| 282 | } |
| 283 | |
| 284 | if (bad_offset) |
| 285 | { |
| 286 | info->bytes_per_chunk = 1; |
| 287 | info->fprintf_func (info->stream, ".byte 0x%.2x", fp[fp_offset]); |
| 288 | return 1; |
| 289 | } |
| 290 | |
| 291 | if (num_bits == 16) |
| 292 | { |
| 293 | /* The least-significant part of a 32-bit word comes logically |
| 294 | before the most-significant part. For big-endian, follow the |
| 295 | TI assembler in showing instructions in logical order by |
| 296 | pretending that the two halves of the word are in opposite |
| 297 | locations to where they actually are. */ |
| 298 | if (info->endian == BFD_ENDIAN_LITTLE) |
| 299 | opcode = tic6x_extract_16 (fp + fp_offset, &header, info); |
| 300 | else |
| 301 | opcode = tic6x_extract_16 (fp + (fp_offset ^ 2), &header, info); |
| 302 | } |
| 303 | else |
| 304 | opcode = tic6x_extract_32 (fp + fp_offset, info); |
| 305 | |
| 306 | for (opcode_id = 0; opcode_id < tic6x_opcode_max; opcode_id++) |
| 307 | { |
| 308 | const tic6x_opcode *const opc = &tic6x_opcode_table[opcode_id]; |
| 309 | const tic6x_insn_format *const fmt |
| 310 | = &tic6x_insn_format_table[opc->format]; |
| 311 | const tic6x_insn_field *creg_field; |
| 312 | bfd_boolean p_bit; |
| 313 | const char *parallel; |
| 314 | const char *cond = ""; |
| 315 | const char *func_unit; |
| 316 | char func_unit_buf[7]; |
| 317 | unsigned int func_unit_side = 0; |
| 318 | unsigned int func_unit_data_side = 0; |
| 319 | unsigned int func_unit_cross = 0; |
| 320 | unsigned int t_val = 0; |
| 321 | /* The maximum length of the text of a non-PC-relative operand |
| 322 | is 24 bytes (SPMASK masking all eight functional units, with |
| 323 | separating commas and trailing NUL). */ |
| 324 | char operands[TIC6X_MAX_OPERANDS][24] = { { 0 } }; |
| 325 | bfd_vma operands_addresses[TIC6X_MAX_OPERANDS] = { 0 }; |
| 326 | bfd_boolean operands_text[TIC6X_MAX_OPERANDS] = { FALSE }; |
| 327 | bfd_boolean operands_pcrel[TIC6X_MAX_OPERANDS] = { FALSE }; |
| 328 | unsigned int fix; |
| 329 | unsigned int num_operands; |
| 330 | unsigned int op_num; |
| 331 | bfd_boolean fixed_ok; |
| 332 | bfd_boolean operands_ok; |
| 333 | bfd_boolean have_t = FALSE; |
| 334 | |
| 335 | if (opc->flags & TIC6X_FLAG_MACRO) |
| 336 | continue; |
| 337 | if (fmt->num_bits != num_bits) |
| 338 | continue; |
| 339 | if ((opcode & fmt->mask) != fmt->cst_bits) |
| 340 | continue; |
| 341 | |
| 342 | /* If the format has a creg field, it is only a candidate for a |
| 343 | match if the creg and z fields have values indicating a valid |
| 344 | condition; reserved values indicate either an instruction |
| 345 | format without a creg field, or an invalid instruction. */ |
| 346 | creg_field = tic6x_field_from_fmt (fmt, tic6x_field_creg); |
| 347 | if (creg_field) |
| 348 | { |
| 349 | const tic6x_insn_field *z_field; |
| 350 | unsigned int creg_value, z_value; |
| 351 | static const char *const conds[8][2] = |
| 352 | { |
| 353 | { "", NULL }, |
| 354 | { "[b0] ", "[!b0] " }, |
| 355 | { "[b1] ", "[!b1] " }, |
| 356 | { "[b2] ", "[!b2] " }, |
| 357 | { "[a1] ", "[!a1] " }, |
| 358 | { "[a2] ", "[!a2] " }, |
| 359 | { "[a0] ", "[!a0] " }, |
| 360 | { NULL, NULL } |
| 361 | }; |
| 362 | |
| 363 | /* A creg field is not meaningful without a z field, so if |
| 364 | the z field is not present this is an error in the format |
| 365 | table. */ |
| 366 | z_field = tic6x_field_from_fmt (fmt, tic6x_field_z); |
| 367 | if (!z_field) |
| 368 | { |
| 369 | printf ("*** opcode %x: missing z field", opcode); |
| 370 | abort (); |
| 371 | } |
| 372 | |
| 373 | creg_value = tic6x_field_bits (opcode, creg_field); |
| 374 | z_value = tic6x_field_bits (opcode, z_field); |
| 375 | cond = conds[creg_value][z_value]; |
| 376 | if (cond == NULL) |
| 377 | continue; |
| 378 | } |
| 379 | |
| 380 | if (opc->flags & TIC6X_FLAG_INSN16_SPRED) |
| 381 | { |
| 382 | const tic6x_insn_field *cc_field; |
| 383 | unsigned int s_value = 0; |
| 384 | unsigned int z_value = 0; |
| 385 | bfd_boolean cond_known = FALSE; |
| 386 | static const char *const conds[2][2] = |
| 387 | { |
| 388 | { "[a0] ", "[!a0] " }, |
| 389 | { "[b0] ", "[!b0] " } |
| 390 | }; |
| 391 | |
| 392 | cc_field = tic6x_field_from_fmt (fmt, tic6x_field_cc); |
| 393 | |
| 394 | if (cc_field) |
| 395 | { |
| 396 | unsigned int cc_value; |
| 397 | |
| 398 | cc_value = tic6x_field_bits (opcode, cc_field); |
| 399 | s_value = (cc_value & 0x2) >> 1; |
| 400 | z_value = (cc_value & 0x1); |
| 401 | cond_known = TRUE; |
| 402 | } |
| 403 | else |
| 404 | { |
| 405 | const tic6x_insn_field *z_field; |
| 406 | const tic6x_insn_field *s_field; |
| 407 | |
| 408 | s_field = tic6x_field_from_fmt (fmt, tic6x_field_s); |
| 409 | |
| 410 | if (!s_field) |
| 411 | { |
| 412 | printf ("opcode %x: missing compact insn predicate register field (s field)\n", |
| 413 | opcode); |
| 414 | abort (); |
| 415 | } |
| 416 | s_value = tic6x_field_bits (opcode, s_field); |
| 417 | z_field = tic6x_field_from_fmt (fmt, tic6x_field_z); |
| 418 | if (!z_field) |
| 419 | { |
| 420 | printf ("opcode %x: missing compact insn predicate z_value (z field)\n", opcode); |
| 421 | abort (); |
| 422 | } |
| 423 | |
| 424 | z_value = tic6x_field_bits (opcode, z_field); |
| 425 | cond_known = TRUE; |
| 426 | } |
| 427 | |
| 428 | if (!cond_known) |
| 429 | { |
| 430 | printf ("opcode %x: unspecified ompact insn predicate\n", opcode); |
| 431 | abort (); |
| 432 | } |
| 433 | cond = conds[s_value][z_value]; |
| 434 | } |
| 435 | |
| 436 | /* All fixed fields must have matching values; all fields with |
| 437 | restricted ranges must have values within those ranges. */ |
| 438 | fixed_ok = TRUE; |
| 439 | for (fix = 0; fix < opc->num_fixed_fields; fix++) |
| 440 | { |
| 441 | unsigned int field_bits; |
| 442 | const tic6x_insn_field *const field |
| 443 | = tic6x_field_from_fmt (fmt, opc->fixed_fields[fix].field_id); |
| 444 | |
| 445 | if (!field) |
| 446 | { |
| 447 | printf ("opcode %x: missing field #%d for FIX #%d\n", |
| 448 | opcode, opc->fixed_fields[fix].field_id, fix); |
| 449 | abort (); |
| 450 | } |
| 451 | |
| 452 | field_bits = tic6x_field_bits (opcode, field); |
| 453 | if (field_bits < opc->fixed_fields[fix].min_val |
| 454 | || field_bits > opc->fixed_fields[fix].max_val) |
| 455 | { |
| 456 | fixed_ok = FALSE; |
| 457 | break; |
| 458 | } |
| 459 | } |
| 460 | if (!fixed_ok) |
| 461 | continue; |
| 462 | |
| 463 | /* The instruction matches. */ |
| 464 | |
| 465 | /* The p-bit indicates whether this instruction is in parallel |
| 466 | with the *next* instruction, whereas the parallel bars |
| 467 | indicate the instruction is in parallel with the *previous* |
| 468 | instruction. Thus, we must find the p-bit for the previous |
| 469 | instruction. */ |
| 470 | if (num_bits == 16 && (fp_offset & 0x2) == 2) |
| 471 | { |
| 472 | /* This is the logically second (most significant; second in |
| 473 | fp_offset terms because fp_offset relates to logical not |
| 474 | physical addresses) instruction of a compact pair; find |
| 475 | the p-bit for the first (least significant). */ |
| 476 | p_bit = header.p_bits[(fp_offset >> 2) << 1]; |
| 477 | } |
| 478 | else if (fp_offset >= 4) |
| 479 | { |
| 480 | /* Find the last instruction of the previous word in this |
| 481 | fetch packet. For compact instructions, this is the most |
| 482 | significant 16 bits. */ |
| 483 | if (fetch_packet_header_based |
| 484 | && header.word_compact[(fp_offset >> 2) - 1]) |
| 485 | p_bit = header.p_bits[(fp_offset >> 1) - 1]; |
| 486 | else |
| 487 | { |
| 488 | unsigned int prev_opcode |
| 489 | = tic6x_extract_32 (fp + (fp_offset & 0x1c) - 4, info); |
| 490 | p_bit = (prev_opcode & 0x1) ? TRUE : FALSE; |
| 491 | } |
| 492 | } |
| 493 | else |
| 494 | { |
| 495 | /* Find the last instruction of the previous fetch |
| 496 | packet. */ |
| 497 | unsigned char fp_prev[32]; |
| 498 | |
| 499 | status = info->read_memory_func (fp_addr - 32, fp_prev, 32, info); |
| 500 | if (status) |
| 501 | /* No previous instruction to be parallel with. */ |
| 502 | p_bit = FALSE; |
| 503 | else |
| 504 | { |
| 505 | bfd_boolean prev_header_based; |
| 506 | tic6x_fetch_packet_header prev_header; |
| 507 | |
| 508 | prev_header_based |
| 509 | = tic6x_check_fetch_packet_header (fp_prev, &prev_header, info); |
| 510 | if (prev_header_based && prev_header.word_compact[6]) |
| 511 | p_bit = prev_header.p_bits[13]; |
| 512 | else |
| 513 | { |
| 514 | unsigned int prev_opcode = tic6x_extract_32 (fp_prev + 28, |
| 515 | info); |
| 516 | p_bit = (prev_opcode & 0x1) ? TRUE : FALSE; |
| 517 | } |
| 518 | } |
| 519 | } |
| 520 | parallel = p_bit ? "|| " : ""; |
| 521 | |
| 522 | if (opc->func_unit == tic6x_func_unit_nfu) |
| 523 | func_unit = ""; |
| 524 | else |
| 525 | { |
| 526 | unsigned int fld_num; |
| 527 | char func_unit_char; |
| 528 | const char *data_str; |
| 529 | bfd_boolean have_areg = FALSE; |
| 530 | bfd_boolean have_cross = FALSE; |
| 531 | |
| 532 | func_unit_side = (opc->flags & TIC6X_FLAG_SIDE_B_ONLY) ? 2 : 0; |
| 533 | func_unit_cross = 0; |
| 534 | func_unit_data_side = (opc->flags & TIC6X_FLAG_SIDE_T2_ONLY) ? 2 : 0; |
| 535 | |
| 536 | for (fld_num = 0; fld_num < opc->num_variable_fields; fld_num++) |
| 537 | { |
| 538 | const tic6x_coding_field *const enc = &opc->variable_fields[fld_num]; |
| 539 | const tic6x_insn_field *field; |
| 540 | unsigned int fld_val; |
| 541 | |
| 542 | field = tic6x_field_from_fmt (fmt, enc->field_id); |
| 543 | |
| 544 | if (!field) |
| 545 | { |
| 546 | printf ("opcode %x: could not retrieve field (field_id:%d)\n", |
| 547 | opcode, fld_num); |
| 548 | abort (); |
| 549 | } |
| 550 | |
| 551 | fld_val = tic6x_field_bits (opcode, field); |
| 552 | |
| 553 | switch (enc->coding_method) |
| 554 | { |
| 555 | case tic6x_coding_fu: |
| 556 | /* The side must be specified exactly once. */ |
| 557 | if (func_unit_side) |
| 558 | { |
| 559 | printf ("opcode %x: field #%d use tic6x_coding_fu, but func_unit_side is already set!\n", |
| 560 | opcode, fld_num); |
| 561 | abort (); |
| 562 | } |
| 563 | func_unit_side = (fld_val ? 2 : 1); |
| 564 | break; |
| 565 | |
| 566 | case tic6x_coding_data_fu: |
| 567 | /* The data side must be specified exactly once. */ |
| 568 | if (func_unit_data_side) |
| 569 | { |
| 570 | printf ("opcode %x: field #%d use tic6x_coding_fu, but func_unit_side is already set!\n", |
| 571 | opcode, fld_num); |
| 572 | abort (); |
| 573 | } |
| 574 | func_unit_data_side = (fld_val ? 2 : 1); |
| 575 | break; |
| 576 | |
| 577 | case tic6x_coding_xpath: |
| 578 | /* Cross path use must be specified exactly |
| 579 | once. */ |
| 580 | if (have_cross) |
| 581 | { |
| 582 | printf ("opcode %x: field #%d use tic6x_coding_xpath, have_cross is already set!\n", |
| 583 | opcode, fld_num); |
| 584 | abort (); |
| 585 | } |
| 586 | have_cross = TRUE; |
| 587 | func_unit_cross = fld_val; |
| 588 | break; |
| 589 | |
| 590 | case tic6x_coding_rside: |
| 591 | /* If the format has a t field, use it for src/dst register side. */ |
| 592 | have_t = TRUE; |
| 593 | t_val = fld_val; |
| 594 | func_unit_data_side = (t_val ? 2 : 1); |
| 595 | break; |
| 596 | |
| 597 | case tic6x_coding_areg: |
| 598 | have_areg = TRUE; |
| 599 | break; |
| 600 | |
| 601 | default: |
| 602 | /* Don't relate to functional units. */ |
| 603 | break; |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | /* The side of the functional unit used must now have been |
| 608 | determined either from the flags or from an instruction |
| 609 | field. */ |
| 610 | if (func_unit_side != 1 && func_unit_side != 2) |
| 611 | { |
| 612 | printf ("opcode %x: func_unit_side is not encoded!\n", opcode); |
| 613 | abort (); |
| 614 | } |
| 615 | |
| 616 | /* Cross paths are not applicable when sides are specified |
| 617 | for both address and data paths. */ |
| 618 | if (func_unit_data_side && have_cross) |
| 619 | { |
| 620 | printf ("opcode %x: xpath not applicable when side are specified both for address and data!\n", |
| 621 | opcode); |
| 622 | abort (); |
| 623 | } |
| 624 | |
| 625 | /* Separate address and data paths are only applicable for |
| 626 | the D unit. */ |
| 627 | if (func_unit_data_side && opc->func_unit != tic6x_func_unit_d) |
| 628 | { |
| 629 | printf ("opcode %x: separate address and data paths only applicable for D unit!\n", |
| 630 | opcode); |
| 631 | abort (); |
| 632 | } |
| 633 | |
| 634 | /* If an address register is being used but in ADDA rather |
| 635 | than a load or store, it uses a cross path for side-A |
| 636 | instructions, and the cross path use is not specified by |
| 637 | an instruction field. */ |
| 638 | if (have_areg && !func_unit_data_side) |
| 639 | { |
| 640 | if (have_cross) |
| 641 | { |
| 642 | printf ("opcode %x: illegal cross path specifier in adda opcode!\n", opcode); |
| 643 | abort (); |
| 644 | } |
| 645 | func_unit_cross = (func_unit_side == 1 ? TRUE : FALSE); |
| 646 | } |
| 647 | |
| 648 | switch (opc->func_unit) |
| 649 | { |
| 650 | case tic6x_func_unit_d: |
| 651 | func_unit_char = 'D'; |
| 652 | break; |
| 653 | |
| 654 | case tic6x_func_unit_l: |
| 655 | func_unit_char = 'L'; |
| 656 | break; |
| 657 | |
| 658 | case tic6x_func_unit_m: |
| 659 | func_unit_char = 'M'; |
| 660 | break; |
| 661 | |
| 662 | case tic6x_func_unit_s: |
| 663 | func_unit_char = 'S'; |
| 664 | break; |
| 665 | |
| 666 | default: |
| 667 | printf ("opcode %x: illegal func_unit specifier %d\n", opcode, opc->func_unit); |
| 668 | abort (); |
| 669 | } |
| 670 | |
| 671 | switch (func_unit_data_side) |
| 672 | { |
| 673 | case 0: |
| 674 | data_str = ""; |
| 675 | break; |
| 676 | |
| 677 | case 1: |
| 678 | data_str = "T1"; |
| 679 | break; |
| 680 | |
| 681 | case 2: |
| 682 | data_str = "T2"; |
| 683 | break; |
| 684 | |
| 685 | default: |
| 686 | printf ("opcode %x: illegal data func_unit specifier %d\n", |
| 687 | opcode, func_unit_data_side); |
| 688 | abort (); |
| 689 | } |
| 690 | |
| 691 | if (opc->flags & TIC6X_FLAG_INSN16_BSIDE && func_unit_side == 1) |
| 692 | func_unit_cross = 1; |
| 693 | |
| 694 | snprintf (func_unit_buf, 7, " .%c%u%s%s", func_unit_char, |
| 695 | func_unit_side, (func_unit_cross ? "X" : ""), data_str); |
| 696 | func_unit = func_unit_buf; |
| 697 | } |
| 698 | |
| 699 | /* For each operand there must be one or more fields set based |
| 700 | on that operand, that can together be used to derive the |
| 701 | operand value. */ |
| 702 | operands_ok = TRUE; |
| 703 | num_operands = opc->num_operands; |
| 704 | for (op_num = 0; op_num < num_operands; op_num++) |
| 705 | { |
| 706 | unsigned int fld_num; |
| 707 | unsigned int mem_base_reg = 0; |
| 708 | bfd_boolean mem_base_reg_known = FALSE; |
| 709 | bfd_boolean mem_base_reg_known_long = FALSE; |
| 710 | unsigned int mem_offset = 0; |
| 711 | bfd_boolean mem_offset_known = FALSE; |
| 712 | bfd_boolean mem_offset_known_long = FALSE; |
| 713 | unsigned int mem_mode = 0; |
| 714 | bfd_boolean mem_mode_known = FALSE; |
| 715 | unsigned int mem_scaled = 0; |
| 716 | bfd_boolean mem_scaled_known = FALSE; |
| 717 | unsigned int crlo = 0; |
| 718 | bfd_boolean crlo_known = FALSE; |
| 719 | unsigned int crhi = 0; |
| 720 | bfd_boolean crhi_known = FALSE; |
| 721 | bfd_boolean spmask_skip_operand = FALSE; |
| 722 | unsigned int fcyc_bits = 0; |
| 723 | bfd_boolean prev_sploop_found = FALSE; |
| 724 | |
| 725 | switch (opc->operand_info[op_num].form) |
| 726 | { |
| 727 | case tic6x_operand_b15reg: |
| 728 | /* Fully determined by the functional unit. */ |
| 729 | operands_text[op_num] = TRUE; |
| 730 | snprintf (operands[op_num], 24, "b15"); |
| 731 | continue; |
| 732 | |
| 733 | case tic6x_operand_zreg: |
| 734 | /* Fully determined by the functional unit. */ |
| 735 | operands_text[op_num] = TRUE; |
| 736 | snprintf (operands[op_num], 24, "%c0", |
| 737 | (func_unit_side == 2 ? 'b' : 'a')); |
| 738 | continue; |
| 739 | |
| 740 | case tic6x_operand_retreg: |
| 741 | /* Fully determined by the functional unit. */ |
| 742 | operands_text[op_num] = TRUE; |
| 743 | snprintf (operands[op_num], 24, "%c3", |
| 744 | (func_unit_side == 2 ? 'b' : 'a')); |
| 745 | continue; |
| 746 | |
| 747 | case tic6x_operand_irp: |
| 748 | operands_text[op_num] = TRUE; |
| 749 | snprintf (operands[op_num], 24, "irp"); |
| 750 | continue; |
| 751 | |
| 752 | case tic6x_operand_nrp: |
| 753 | operands_text[op_num] = TRUE; |
| 754 | snprintf (operands[op_num], 24, "nrp"); |
| 755 | continue; |
| 756 | |
| 757 | case tic6x_operand_ilc: |
| 758 | operands_text[op_num] = TRUE; |
| 759 | snprintf (operands[op_num], 24, "ilc"); |
| 760 | continue; |
| 761 | |
| 762 | case tic6x_operand_hw_const_minus_1: |
| 763 | operands_text[op_num] = TRUE; |
| 764 | snprintf (operands[op_num], 24, "-1"); |
| 765 | continue; |
| 766 | |
| 767 | case tic6x_operand_hw_const_0: |
| 768 | operands_text[op_num] = TRUE; |
| 769 | snprintf (operands[op_num], 24, "0"); |
| 770 | continue; |
| 771 | |
| 772 | case tic6x_operand_hw_const_1: |
| 773 | operands_text[op_num] = TRUE; |
| 774 | snprintf (operands[op_num], 24, "1"); |
| 775 | continue; |
| 776 | |
| 777 | case tic6x_operand_hw_const_5: |
| 778 | operands_text[op_num] = TRUE; |
| 779 | snprintf (operands[op_num], 24, "5"); |
| 780 | continue; |
| 781 | |
| 782 | case tic6x_operand_hw_const_16: |
| 783 | operands_text[op_num] = TRUE; |
| 784 | snprintf (operands[op_num], 24, "16"); |
| 785 | continue; |
| 786 | |
| 787 | case tic6x_operand_hw_const_24: |
| 788 | operands_text[op_num] = TRUE; |
| 789 | snprintf (operands[op_num], 24, "24"); |
| 790 | continue; |
| 791 | |
| 792 | case tic6x_operand_hw_const_31: |
| 793 | operands_text[op_num] = TRUE; |
| 794 | snprintf (operands[op_num], 24, "31"); |
| 795 | continue; |
| 796 | |
| 797 | default: |
| 798 | break; |
| 799 | } |
| 800 | |
| 801 | for (fld_num = 0; fld_num < opc->num_variable_fields; fld_num++) |
| 802 | { |
| 803 | const tic6x_coding_field *const enc |
| 804 | = &opc->variable_fields[fld_num]; |
| 805 | const tic6x_insn_field *field; |
| 806 | unsigned int fld_val; |
| 807 | unsigned int reg_base = 0; |
| 808 | signed int signed_fld_val; |
| 809 | char reg_side = '?'; |
| 810 | |
| 811 | if (enc->operand_num != op_num) |
| 812 | continue; |
| 813 | field = tic6x_field_from_fmt (fmt, enc->field_id); |
| 814 | if (!field) |
| 815 | { |
| 816 | printf ("opcode %x: missing field (field_id:%d) in format\n", opcode, enc->field_id); |
| 817 | abort (); |
| 818 | } |
| 819 | fld_val = tic6x_field_bits (opcode, field); |
| 820 | switch (enc->coding_method) |
| 821 | { |
| 822 | case tic6x_coding_cst_s3i: |
| 823 | (fld_val == 0x00) && (fld_val = 0x10); |
| 824 | (fld_val == 0x07) && (fld_val = 0x08); |
| 825 | /* Fall through. */ |
| 826 | case tic6x_coding_ucst: |
| 827 | case tic6x_coding_ulcst_dpr_byte: |
| 828 | case tic6x_coding_ulcst_dpr_half: |
| 829 | case tic6x_coding_ulcst_dpr_word: |
| 830 | case tic6x_coding_lcst_low16: |
| 831 | switch (opc->operand_info[op_num].form) |
| 832 | { |
| 833 | case tic6x_operand_asm_const: |
| 834 | case tic6x_operand_link_const: |
| 835 | operands_text[op_num] = TRUE; |
| 836 | snprintf (operands[op_num], 24, "%u", fld_val); |
| 837 | break; |
| 838 | |
| 839 | case tic6x_operand_mem_long: |
| 840 | mem_offset = fld_val; |
| 841 | mem_offset_known_long = TRUE; |
| 842 | break; |
| 843 | |
| 844 | default: |
| 845 | printf ("opcode %x: illegal operand form for operand#%d\n", opcode, op_num); |
| 846 | abort (); |
| 847 | } |
| 848 | break; |
| 849 | |
| 850 | case tic6x_coding_lcst_high16: |
| 851 | operands_text[op_num] = TRUE; |
| 852 | snprintf (operands[op_num], 24, "%u", fld_val << 16); |
| 853 | break; |
| 854 | |
| 855 | case tic6x_coding_scst_l3i: |
| 856 | operands_text[op_num] = TRUE; |
| 857 | if (fld_val == 0) |
| 858 | { |
| 859 | signed_fld_val = 8; |
| 860 | } |
| 861 | else |
| 862 | { |
| 863 | signed_fld_val = (signed int) fld_val; |
| 864 | signed_fld_val ^= (1 << (tic6x_field_width (field) - 1)); |
| 865 | signed_fld_val -= (1 << (tic6x_field_width (field) - 1)); |
| 866 | } |
| 867 | snprintf (operands[op_num], 24, "%d", signed_fld_val); |
| 868 | break; |
| 869 | |
| 870 | case tic6x_coding_scst: |
| 871 | operands_text[op_num] = TRUE; |
| 872 | signed_fld_val = (signed int) fld_val; |
| 873 | signed_fld_val ^= (1 << (tic6x_field_width (field) - 1)); |
| 874 | signed_fld_val -= (1 << (tic6x_field_width (field) - 1)); |
| 875 | snprintf (operands[op_num], 24, "%d", signed_fld_val); |
| 876 | break; |
| 877 | |
| 878 | case tic6x_coding_ucst_minus_one: |
| 879 | operands_text[op_num] = TRUE; |
| 880 | snprintf (operands[op_num], 24, "%u", fld_val + 1); |
| 881 | break; |
| 882 | |
| 883 | case tic6x_coding_pcrel: |
| 884 | case tic6x_coding_pcrel_half: |
| 885 | signed_fld_val = (signed int) fld_val; |
| 886 | signed_fld_val ^= (1 << (tic6x_field_width (field) - 1)); |
| 887 | signed_fld_val -= (1 << (tic6x_field_width (field) - 1)); |
| 888 | if (fetch_packet_header_based |
| 889 | && enc->coding_method == tic6x_coding_pcrel_half) |
| 890 | signed_fld_val *= 2; |
| 891 | else |
| 892 | signed_fld_val *= 4; |
| 893 | operands_pcrel[op_num] = TRUE; |
| 894 | operands_addresses[op_num] = fp_addr + signed_fld_val; |
| 895 | break; |
| 896 | |
| 897 | case tic6x_coding_regpair_msb: |
| 898 | if (opc->operand_info[op_num].form != tic6x_operand_regpair) |
| 899 | abort (); |
| 900 | operands_text[op_num] = TRUE; |
| 901 | snprintf (operands[op_num], 24, "%c%u:%c%u", |
| 902 | (func_unit_side == 2 ? 'b' : 'a'), (fld_val | 0x1), |
| 903 | (func_unit_side == 2 ? 'b' : 'a'), (fld_val | 0x1) - 1); |
| 904 | break; |
| 905 | |
| 906 | case tic6x_coding_pcrel_half_unsigned: |
| 907 | operands_pcrel[op_num] = TRUE; |
| 908 | operands_addresses[op_num] = fp_addr + 2 * fld_val; |
| 909 | break; |
| 910 | |
| 911 | case tic6x_coding_reg_shift: |
| 912 | fld_val <<= 1; |
| 913 | /* Fall through. */ |
| 914 | case tic6x_coding_reg: |
| 915 | if (num_bits == 16 && header.rs && !(opc->flags & TIC6X_FLAG_INSN16_NORS)) |
| 916 | { |
| 917 | reg_base = 16; |
| 918 | } |
| 919 | switch (opc->operand_info[op_num].form) |
| 920 | { |
| 921 | case tic6x_operand_treg: |
| 922 | if (!have_t) |
| 923 | { |
| 924 | printf ("opcode %x: operand treg but missing t field\n", opcode); |
| 925 | abort (); |
| 926 | } |
| 927 | operands_text[op_num] = TRUE; |
| 928 | reg_side = t_val ? 'b' : 'a'; |
| 929 | snprintf (operands[op_num], 24, "%c%u", reg_side, reg_base + fld_val); |
| 930 | break; |
| 931 | |
| 932 | case tic6x_operand_reg: |
| 933 | operands_text[op_num] = TRUE; |
| 934 | reg_side = (func_unit_side == 2) ? 'b' : 'a'; |
| 935 | snprintf (operands[op_num], 24, "%c%u", reg_side, reg_base + fld_val); |
| 936 | break; |
| 937 | |
| 938 | case tic6x_operand_reg_nors: |
| 939 | operands_text[op_num] = TRUE; |
| 940 | reg_side = (func_unit_side == 2) ? 'b' : 'a'; |
| 941 | snprintf (operands[op_num], 24, "%c%u", reg_side, fld_val); |
| 942 | break; |
| 943 | |
| 944 | case tic6x_operand_reg_bside: |
| 945 | operands_text[op_num] = TRUE; |
| 946 | snprintf (operands[op_num], 24, "b%u", reg_base + fld_val); |
| 947 | break; |
| 948 | |
| 949 | case tic6x_operand_reg_bside_nors: |
| 950 | operands_text[op_num] = TRUE; |
| 951 | snprintf (operands[op_num], 24, "b%u", fld_val); |
| 952 | break; |
| 953 | |
| 954 | case tic6x_operand_xreg: |
| 955 | operands_text[op_num] = TRUE; |
| 956 | reg_side = ((func_unit_side == 2) ^ func_unit_cross) ? 'b' : 'a'; |
| 957 | snprintf (operands[op_num], 24, "%c%u", reg_side, reg_base + fld_val); |
| 958 | break; |
| 959 | |
| 960 | case tic6x_operand_dreg: |
| 961 | operands_text[op_num] = TRUE; |
| 962 | reg_side = (func_unit_data_side == 2) ? 'b' : 'a'; |
| 963 | snprintf (operands[op_num], 24, "%c%u", reg_side, reg_base + fld_val); |
| 964 | break; |
| 965 | |
| 966 | case tic6x_operand_regpair: |
| 967 | operands_text[op_num] = TRUE; |
| 968 | if (fld_val & 1) |
| 969 | operands_ok = FALSE; |
| 970 | reg_side = (func_unit_side == 2) ? 'b' : 'a'; |
| 971 | snprintf (operands[op_num], 24, "%c%u:%c%u", |
| 972 | reg_side, reg_base + fld_val + 1, |
| 973 | reg_side, reg_base + fld_val); |
| 974 | break; |
| 975 | |
| 976 | case tic6x_operand_xregpair: |
| 977 | operands_text[op_num] = TRUE; |
| 978 | if (fld_val & 1) |
| 979 | operands_ok = FALSE; |
| 980 | reg_side = ((func_unit_side == 2) ^ func_unit_cross) ? 'b' : 'a'; |
| 981 | snprintf (operands[op_num], 24, "%c%u:%c%u", |
| 982 | reg_side, reg_base + fld_val + 1, |
| 983 | reg_side, reg_base + fld_val); |
| 984 | break; |
| 985 | |
| 986 | case tic6x_operand_tregpair: |
| 987 | if (!have_t) |
| 988 | { |
| 989 | printf ("opcode %x: operand tregpair but missing t field\n", opcode); |
| 990 | abort (); |
| 991 | } |
| 992 | operands_text[op_num] = TRUE; |
| 993 | if (fld_val & 1) |
| 994 | operands_ok = FALSE; |
| 995 | reg_side = t_val ? 'b' : 'a'; |
| 996 | snprintf (operands[op_num], 24, "%c%u:%c%u", |
| 997 | reg_side, reg_base + fld_val + 1, |
| 998 | reg_side, reg_base + fld_val); |
| 999 | break; |
| 1000 | |
| 1001 | case tic6x_operand_dregpair: |
| 1002 | operands_text[op_num] = TRUE; |
| 1003 | if (fld_val & 1) |
| 1004 | operands_ok = FALSE; |
| 1005 | reg_side = (func_unit_data_side) == 2 ? 'b' : 'a'; |
| 1006 | snprintf (operands[op_num], 24, "%c%u:%c%u", |
| 1007 | reg_side, reg_base + fld_val + 1, |
| 1008 | reg_side, reg_base + fld_val); |
| 1009 | break; |
| 1010 | |
| 1011 | case tic6x_operand_mem_deref: |
| 1012 | operands_text[op_num] = TRUE; |
| 1013 | reg_side = func_unit_side == 2 ? 'b' : 'a'; |
| 1014 | snprintf (operands[op_num], 24, "*%c%u", reg_side, reg_base + fld_val); |
| 1015 | break; |
| 1016 | |
| 1017 | case tic6x_operand_mem_short: |
| 1018 | case tic6x_operand_mem_ndw: |
| 1019 | mem_base_reg = fld_val; |
| 1020 | mem_base_reg_known = TRUE; |
| 1021 | break; |
| 1022 | |
| 1023 | default: |
| 1024 | printf ("opcode %x: unexpected operand form %d for operand #%d", |
| 1025 | opcode, opc->operand_info[op_num].form, op_num); |
| 1026 | abort (); |
| 1027 | } |
| 1028 | break; |
| 1029 | |
| 1030 | case tic6x_coding_reg_ptr: |
| 1031 | switch (opc->operand_info[op_num].form) |
| 1032 | { |
| 1033 | case tic6x_operand_mem_short: |
| 1034 | case tic6x_operand_mem_ndw: |
| 1035 | if (fld_val > 0x3u) |
| 1036 | { |
| 1037 | printf("opcode %x: illegal field value for ptr register of operand #%d (%d)", |
| 1038 | opcode, op_num, fld_val); |
| 1039 | abort (); |
| 1040 | } |
| 1041 | mem_base_reg = 0x4 | fld_val; |
| 1042 | mem_base_reg_known = TRUE; |
| 1043 | break; |
| 1044 | |
| 1045 | default: |
| 1046 | printf ("opcode %x: unexpected operand form %d for operand #%d", |
| 1047 | opcode, opc->operand_info[op_num].form, op_num); |
| 1048 | abort (); |
| 1049 | } |
| 1050 | break; |
| 1051 | |
| 1052 | case tic6x_coding_areg: |
| 1053 | switch (opc->operand_info[op_num].form) |
| 1054 | { |
| 1055 | case tic6x_operand_areg: |
| 1056 | operands_text[op_num] = TRUE; |
| 1057 | snprintf (operands[op_num], 24, "b%u", |
| 1058 | fld_val ? 15u : 14u); |
| 1059 | break; |
| 1060 | |
| 1061 | case tic6x_operand_mem_long: |
| 1062 | mem_base_reg = fld_val ? 15u : 14u; |
| 1063 | mem_base_reg_known_long = TRUE; |
| 1064 | break; |
| 1065 | |
| 1066 | default: |
| 1067 | printf ("opcode %x: bad operand form\n", opcode); |
| 1068 | abort (); |
| 1069 | } |
| 1070 | break; |
| 1071 | |
| 1072 | case tic6x_coding_mem_offset_minus_one_noscale: |
| 1073 | case tic6x_coding_mem_offset_minus_one: |
| 1074 | fld_val += 1; |
| 1075 | case tic6x_coding_mem_offset_noscale: |
| 1076 | case tic6x_coding_mem_offset: |
| 1077 | mem_offset = fld_val; |
| 1078 | mem_offset_known = TRUE; |
| 1079 | if (num_bits == 16) |
| 1080 | { |
| 1081 | mem_mode_known = TRUE; |
| 1082 | mem_mode = TIC6X_INSN16_MEM_MODE_VAL (opc->flags); |
| 1083 | mem_scaled_known = TRUE; |
| 1084 | mem_scaled = TRUE; |
| 1085 | if (opc->flags & TIC6X_FLAG_INSN16_B15PTR) |
| 1086 | { |
| 1087 | mem_base_reg_known = TRUE; |
| 1088 | mem_base_reg = 15; |
| 1089 | } |
| 1090 | if ( enc->coding_method == tic6x_coding_mem_offset_noscale |
| 1091 | || enc->coding_method == tic6x_coding_mem_offset_noscale ) |
| 1092 | mem_scaled = FALSE; |
| 1093 | } |
| 1094 | break; |
| 1095 | |
| 1096 | case tic6x_coding_mem_mode: |
| 1097 | mem_mode = fld_val; |
| 1098 | mem_mode_known = TRUE; |
| 1099 | break; |
| 1100 | |
| 1101 | case tic6x_coding_scaled: |
| 1102 | mem_scaled = fld_val; |
| 1103 | mem_scaled_known = TRUE; |
| 1104 | break; |
| 1105 | |
| 1106 | case tic6x_coding_crlo: |
| 1107 | crlo = fld_val; |
| 1108 | crlo_known = TRUE; |
| 1109 | break; |
| 1110 | |
| 1111 | case tic6x_coding_crhi: |
| 1112 | crhi = fld_val; |
| 1113 | crhi_known = TRUE; |
| 1114 | break; |
| 1115 | |
| 1116 | case tic6x_coding_fstg: |
| 1117 | case tic6x_coding_fcyc: |
| 1118 | if (!prev_sploop_found) |
| 1119 | { |
| 1120 | bfd_vma search_fp_addr = fp_addr; |
| 1121 | bfd_vma search_fp_offset = fp_offset; |
| 1122 | bfd_boolean search_fp_header_based |
| 1123 | = fetch_packet_header_based; |
| 1124 | tic6x_fetch_packet_header search_fp_header = header; |
| 1125 | unsigned char search_fp[32]; |
| 1126 | unsigned int search_num_bits; |
| 1127 | unsigned int search_opcode; |
| 1128 | unsigned int sploop_ii = 0; |
| 1129 | int i; |
| 1130 | |
| 1131 | memcpy (search_fp, fp, 32); |
| 1132 | |
| 1133 | /* To interpret these bits in an SPKERNEL |
| 1134 | instruction, we must find the previous |
| 1135 | SPLOOP-family instruction. It may come up to |
| 1136 | 48 execute packets earlier. */ |
| 1137 | for (i = 0; i < 48 * 8; i++) |
| 1138 | { |
| 1139 | /* Find the previous instruction. */ |
| 1140 | if (search_fp_offset & 2) |
| 1141 | search_fp_offset -= 2; |
| 1142 | else if (search_fp_offset >= 4) |
| 1143 | { |
| 1144 | if (search_fp_header_based |
| 1145 | && (search_fp_header.word_compact |
| 1146 | [(search_fp_offset >> 2) - 1])) |
| 1147 | search_fp_offset -= 2; |
| 1148 | else |
| 1149 | search_fp_offset -= 4; |
| 1150 | } |
| 1151 | else |
| 1152 | { |
| 1153 | search_fp_addr -= 32; |
| 1154 | status = info->read_memory_func (search_fp_addr, |
| 1155 | search_fp, |
| 1156 | 32, info); |
| 1157 | if (status) |
| 1158 | /* No previous SPLOOP instruction. */ |
| 1159 | break; |
| 1160 | search_fp_header_based |
| 1161 | = (tic6x_check_fetch_packet_header |
| 1162 | (search_fp, &search_fp_header, info)); |
| 1163 | if (search_fp_header_based) |
| 1164 | search_fp_offset |
| 1165 | = search_fp_header.word_compact[6] ? 26 : 24; |
| 1166 | else |
| 1167 | search_fp_offset = 28; |
| 1168 | } |
| 1169 | |
| 1170 | /* Extract the previous instruction. */ |
| 1171 | if (search_fp_header_based) |
| 1172 | search_num_bits |
| 1173 | = (search_fp_header.word_compact[search_fp_offset |
| 1174 | >> 2] |
| 1175 | ? 16 |
| 1176 | : 32); |
| 1177 | else |
| 1178 | search_num_bits = 32; |
| 1179 | if (search_num_bits == 16) |
| 1180 | { |
| 1181 | if (info->endian == BFD_ENDIAN_LITTLE) |
| 1182 | search_opcode |
| 1183 | = (tic6x_extract_16 |
| 1184 | (search_fp + search_fp_offset, &header, info)); |
| 1185 | else |
| 1186 | search_opcode |
| 1187 | = (tic6x_extract_16 |
| 1188 | (search_fp + (search_fp_offset ^ 2), &header, |
| 1189 | info)); |
| 1190 | } |
| 1191 | else |
| 1192 | search_opcode |
| 1193 | = tic6x_extract_32 (search_fp + search_fp_offset, |
| 1194 | info); |
| 1195 | |
| 1196 | /* Check whether it is an SPLOOP-family |
| 1197 | instruction. */ |
| 1198 | if (search_num_bits == 32 |
| 1199 | && ((search_opcode & 0x003ffffe) == 0x00038000 |
| 1200 | || (search_opcode & 0x003ffffe) == 0x0003a000 |
| 1201 | || ((search_opcode & 0x003ffffe) |
| 1202 | == 0x0003e000))) |
| 1203 | { |
| 1204 | prev_sploop_found = TRUE; |
| 1205 | sploop_ii = ((search_opcode >> 23) & 0x1f) + 1; |
| 1206 | } |
| 1207 | else if (search_num_bits == 16 |
| 1208 | && (search_opcode & 0x3c7e) == 0x0c66) |
| 1209 | { |
| 1210 | prev_sploop_found = TRUE; |
| 1211 | sploop_ii |
| 1212 | = (((search_opcode >> 7) & 0x7) |
| 1213 | | ((search_opcode >> 11) & 0x8)) + 1; |
| 1214 | } |
| 1215 | if (prev_sploop_found) |
| 1216 | { |
| 1217 | if (sploop_ii <= 0) |
| 1218 | { |
| 1219 | printf ("opcode %x: sloop index not found (%d)\n", opcode, sploop_ii); |
| 1220 | abort (); |
| 1221 | } |
| 1222 | else if (sploop_ii <= 1) |
| 1223 | fcyc_bits = 0; |
| 1224 | else if (sploop_ii <= 2) |
| 1225 | fcyc_bits = 1; |
| 1226 | else if (sploop_ii <= 4) |
| 1227 | fcyc_bits = 2; |
| 1228 | else if (sploop_ii <= 8) |
| 1229 | fcyc_bits = 3; |
| 1230 | else if (sploop_ii <= 14) |
| 1231 | fcyc_bits = 4; |
| 1232 | else |
| 1233 | prev_sploop_found = FALSE; |
| 1234 | } |
| 1235 | if (prev_sploop_found) |
| 1236 | break; |
| 1237 | } |
| 1238 | } |
| 1239 | if (!prev_sploop_found) |
| 1240 | { |
| 1241 | operands_ok = FALSE; |
| 1242 | operands_text[op_num] = TRUE; |
| 1243 | break; |
| 1244 | } |
| 1245 | if (fcyc_bits > tic6x_field_width(field)) |
| 1246 | { |
| 1247 | printf ("opcode %x: illegal fcyc value (%d)\n", opcode, fcyc_bits); |
| 1248 | abort (); |
| 1249 | } |
| 1250 | if (enc->coding_method == tic6x_coding_fstg) |
| 1251 | { |
| 1252 | int i, t; |
| 1253 | for (t = 0, i = fcyc_bits; i < 6; i++) |
| 1254 | t = (t << 1) | ((fld_val >> i) & 1); |
| 1255 | operands_text[op_num] = TRUE; |
| 1256 | snprintf (operands[op_num], 24, "%u", t); |
| 1257 | } |
| 1258 | else |
| 1259 | { |
| 1260 | operands_text[op_num] = TRUE; |
| 1261 | snprintf (operands[op_num], 24, "%u", |
| 1262 | fld_val & ((1 << fcyc_bits) - 1)); |
| 1263 | } |
| 1264 | break; |
| 1265 | |
| 1266 | case tic6x_coding_spmask: |
| 1267 | if (fld_val == 0) |
| 1268 | spmask_skip_operand = TRUE; |
| 1269 | else |
| 1270 | { |
| 1271 | char *p; |
| 1272 | unsigned int i; |
| 1273 | |
| 1274 | operands_text[op_num] = TRUE; |
| 1275 | p = operands[op_num]; |
| 1276 | for (i = 0; i < 8; i++) |
| 1277 | if (fld_val & (1 << i)) |
| 1278 | { |
| 1279 | *p++ = "LSDM"[i/2]; |
| 1280 | *p++ = '1' + (i & 1); |
| 1281 | *p++ = ','; |
| 1282 | } |
| 1283 | p[-1] = 0; |
| 1284 | } |
| 1285 | break; |
| 1286 | |
| 1287 | case tic6x_coding_fu: |
| 1288 | case tic6x_coding_data_fu: |
| 1289 | case tic6x_coding_xpath: |
| 1290 | case tic6x_coding_rside: |
| 1291 | /* Don't relate to operands, so operand number is |
| 1292 | meaningless. */ |
| 1293 | break; |
| 1294 | |
| 1295 | default: |
| 1296 | printf ("opcode %x: illegal field encoding (%d)\n", opcode, enc->coding_method); |
| 1297 | abort (); |
| 1298 | } |
| 1299 | |
| 1300 | if (mem_base_reg_known_long && mem_offset_known_long) |
| 1301 | { |
| 1302 | if (operands_text[op_num] || operands_pcrel[op_num]) |
| 1303 | { |
| 1304 | printf ("opcode %x: long access but operands already known ?\n", opcode); |
| 1305 | abort (); |
| 1306 | } |
| 1307 | operands_text[op_num] = TRUE; |
| 1308 | snprintf (operands[op_num], 24, "*+b%u(%u)", mem_base_reg, |
| 1309 | mem_offset * opc->operand_info[op_num].size); |
| 1310 | } |
| 1311 | |
| 1312 | if (mem_base_reg_known && mem_offset_known && mem_mode_known |
| 1313 | && (mem_scaled_known |
| 1314 | || (opc->operand_info[op_num].form |
| 1315 | != tic6x_operand_mem_ndw))) |
| 1316 | { |
| 1317 | char side; |
| 1318 | char base[4]; |
| 1319 | bfd_boolean offset_is_reg; |
| 1320 | bfd_boolean offset_scaled; |
| 1321 | char offset[4]; |
| 1322 | char offsetp[6]; |
| 1323 | |
| 1324 | if (operands_text[op_num] || operands_pcrel[op_num]) |
| 1325 | { |
| 1326 | printf ("opcode %x: mem access operands already known ?\n", opcode); |
| 1327 | abort (); |
| 1328 | } |
| 1329 | |
| 1330 | side = func_unit_side == 2 ? 'b' : 'a'; |
| 1331 | snprintf (base, 4, "%c%u", side, mem_base_reg); |
| 1332 | |
| 1333 | offset_is_reg = ((mem_mode & 4) ? TRUE : FALSE); |
| 1334 | if (offset_is_reg) |
| 1335 | { |
| 1336 | |
| 1337 | if (num_bits == 16 && header.rs && !(opc->flags & TIC6X_FLAG_INSN16_NORS)) |
| 1338 | { |
| 1339 | reg_base = 16; |
| 1340 | } |
| 1341 | snprintf (offset, 4, "%c%u", side, reg_base + mem_offset); |
| 1342 | if (opc->operand_info[op_num].form |
| 1343 | == tic6x_operand_mem_ndw) |
| 1344 | offset_scaled = mem_scaled ? TRUE : FALSE; |
| 1345 | else |
| 1346 | offset_scaled = TRUE; |
| 1347 | } |
| 1348 | else |
| 1349 | { |
| 1350 | if (opc->operand_info[op_num].form |
| 1351 | == tic6x_operand_mem_ndw) |
| 1352 | { |
| 1353 | offset_scaled = mem_scaled ? TRUE : FALSE; |
| 1354 | snprintf (offset, 4, "%u", mem_offset); |
| 1355 | } |
| 1356 | else |
| 1357 | { |
| 1358 | offset_scaled = FALSE; |
| 1359 | snprintf (offset, 4, "%u", |
| 1360 | (mem_offset |
| 1361 | * opc->operand_info[op_num].size)); |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | if (offset_scaled) |
| 1366 | snprintf (offsetp, 6, "[%s]", offset); |
| 1367 | else |
| 1368 | snprintf (offsetp, 6, "(%s)", offset); |
| 1369 | |
| 1370 | operands_text[op_num] = TRUE; |
| 1371 | switch (mem_mode & ~4u) |
| 1372 | { |
| 1373 | case 0: |
| 1374 | snprintf (operands[op_num], 24, "*-%s%s", base, offsetp); |
| 1375 | break; |
| 1376 | |
| 1377 | case 1: |
| 1378 | snprintf (operands[op_num], 24, "*+%s%s", base, offsetp); |
| 1379 | break; |
| 1380 | |
| 1381 | case 2: |
| 1382 | case 3: |
| 1383 | operands_ok = FALSE; |
| 1384 | break; |
| 1385 | |
| 1386 | case 8: |
| 1387 | snprintf (operands[op_num], 24, "*--%s%s", base, |
| 1388 | offsetp); |
| 1389 | break; |
| 1390 | |
| 1391 | case 9: |
| 1392 | snprintf (operands[op_num], 24, "*++%s%s", base, |
| 1393 | offsetp); |
| 1394 | break; |
| 1395 | |
| 1396 | case 10: |
| 1397 | snprintf (operands[op_num], 24, "*%s--%s", base, |
| 1398 | offsetp); |
| 1399 | break; |
| 1400 | |
| 1401 | case 11: |
| 1402 | snprintf (operands[op_num], 24, "*%s++%s", base, |
| 1403 | offsetp); |
| 1404 | break; |
| 1405 | |
| 1406 | default: |
| 1407 | printf ("*** unknown mem_mode : %d \n", mem_mode); |
| 1408 | abort (); |
| 1409 | } |
| 1410 | } |
| 1411 | |
| 1412 | if (crlo_known && crhi_known) |
| 1413 | { |
| 1414 | tic6x_rw rw; |
| 1415 | tic6x_ctrl_id crid; |
| 1416 | |
| 1417 | if (operands_text[op_num] || operands_pcrel[op_num]) |
| 1418 | { |
| 1419 | printf ("*** abort crlo crli\n"); |
| 1420 | abort (); |
| 1421 | } |
| 1422 | |
| 1423 | rw = opc->operand_info[op_num].rw; |
| 1424 | if (rw != tic6x_rw_read |
| 1425 | && rw != tic6x_rw_write) |
| 1426 | { |
| 1427 | printf ("*** abort rw : %d\n", rw); |
| 1428 | abort (); |
| 1429 | } |
| 1430 | |
| 1431 | for (crid = 0; crid < tic6x_ctrl_max; crid++) |
| 1432 | { |
| 1433 | if (crlo == tic6x_ctrl_table[crid].crlo |
| 1434 | && (crhi & tic6x_ctrl_table[crid].crhi_mask) == 0 |
| 1435 | && (rw == tic6x_rw_read |
| 1436 | ? (tic6x_ctrl_table[crid].rw == tic6x_rw_read |
| 1437 | || (tic6x_ctrl_table[crid].rw |
| 1438 | == tic6x_rw_read_write)) |
| 1439 | : (tic6x_ctrl_table[crid].rw == tic6x_rw_write |
| 1440 | || (tic6x_ctrl_table[crid].rw |
| 1441 | == tic6x_rw_read_write)))) |
| 1442 | break; |
| 1443 | } |
| 1444 | if (crid == tic6x_ctrl_max) |
| 1445 | { |
| 1446 | operands_text[op_num] = TRUE; |
| 1447 | operands_ok = FALSE; |
| 1448 | } |
| 1449 | else |
| 1450 | { |
| 1451 | operands_text[op_num] = TRUE; |
| 1452 | snprintf (operands[op_num], 24, "%s", |
| 1453 | tic6x_ctrl_table[crid].name); |
| 1454 | } |
| 1455 | } |
| 1456 | |
| 1457 | if (operands_text[op_num] || operands_pcrel[op_num] |
| 1458 | || spmask_skip_operand) |
| 1459 | break; |
| 1460 | } |
| 1461 | /* end for fld_num */ |
| 1462 | |
| 1463 | if (spmask_skip_operand) |
| 1464 | { |
| 1465 | /* SPMASK operands are only valid as the single operand |
| 1466 | in the opcode table. */ |
| 1467 | if (num_operands != 1) |
| 1468 | { |
| 1469 | printf ("opcode: %x, num_operands != 1 : %d\n", opcode, num_operands); |
| 1470 | abort (); |
| 1471 | } |
| 1472 | num_operands = 0; |
| 1473 | break; |
| 1474 | } |
| 1475 | |
| 1476 | /* The operand must by now have been decoded. */ |
| 1477 | if (!operands_text[op_num] && !operands_pcrel[op_num]) |
| 1478 | { |
| 1479 | printf ("opcode: %x, operand #%d not decoded\n", opcode, op_num); |
| 1480 | abort (); |
| 1481 | } |
| 1482 | } |
| 1483 | /* end for op_num */ |
| 1484 | |
| 1485 | if (!operands_ok) |
| 1486 | continue; |
| 1487 | |
| 1488 | info->bytes_per_chunk = num_bits / 8; |
| 1489 | info->fprintf_func (info->stream, "%s", parallel); |
| 1490 | info->fprintf_func (info->stream, "%s%s%s", cond, opc->name, |
| 1491 | func_unit); |
| 1492 | for (op_num = 0; op_num < num_operands; op_num++) |
| 1493 | { |
| 1494 | info->fprintf_func (info->stream, "%c", (op_num == 0 ? ' ' : ',')); |
| 1495 | if (operands_pcrel[op_num]) |
| 1496 | info->print_address_func (operands_addresses[op_num], info); |
| 1497 | else |
| 1498 | info->fprintf_func (info->stream, "%s", operands[op_num]); |
| 1499 | } |
| 1500 | if (fetch_packet_header_based && header.prot) |
| 1501 | info->fprintf_func (info->stream, " || nop 5"); |
| 1502 | |
| 1503 | return num_bits / 8; |
| 1504 | } |
| 1505 | |
| 1506 | info->bytes_per_chunk = num_bits / 8; |
| 1507 | info->fprintf_func (info->stream, "<undefined instruction 0x%.*x>", |
| 1508 | (int) num_bits / 4, opcode); |
| 1509 | return num_bits / 8; |
| 1510 | } |