| 1 | /* tc-rx.c -- Assembler for the Renesas RX |
| 2 | Copyright (C) 2008-2016 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS 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 |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 19 | 02110-1301, USA. */ |
| 20 | |
| 21 | #include "as.h" |
| 22 | #include "struc-symbol.h" |
| 23 | #include "safe-ctype.h" |
| 24 | #include "dwarf2dbg.h" |
| 25 | #include "elf/common.h" |
| 26 | #include "elf/rx.h" |
| 27 | #include "rx-defs.h" |
| 28 | #include "filenames.h" |
| 29 | #include "listing.h" |
| 30 | #include "sb.h" |
| 31 | #include "macro.h" |
| 32 | |
| 33 | #define RX_OPCODE_BIG_ENDIAN 0 |
| 34 | |
| 35 | const char comment_chars[] = ";"; |
| 36 | /* Note that input_file.c hand checks for '#' at the beginning of the |
| 37 | first line of the input file. This is because the compiler outputs |
| 38 | #NO_APP at the beginning of its output. */ |
| 39 | const char line_comment_chars[] = "#"; |
| 40 | const char line_separator_chars[] = "!"; |
| 41 | |
| 42 | const char EXP_CHARS[] = "eE"; |
| 43 | const char FLT_CHARS[] = "dD"; |
| 44 | \f |
| 45 | /* ELF flags to set in the output file header. */ |
| 46 | static int elf_flags = E_FLAG_RX_ABI; |
| 47 | |
| 48 | bfd_boolean rx_use_conventional_section_names = FALSE; |
| 49 | static bfd_boolean rx_use_small_data_limit = FALSE; |
| 50 | |
| 51 | static bfd_boolean rx_pid_mode = FALSE; |
| 52 | static int rx_num_int_regs = 0; |
| 53 | int rx_pid_register; |
| 54 | int rx_gp_register; |
| 55 | |
| 56 | enum rx_cpu_types rx_cpu = RX600; |
| 57 | |
| 58 | static void rx_fetchalign (int ignore ATTRIBUTE_UNUSED); |
| 59 | |
| 60 | enum options |
| 61 | { |
| 62 | OPTION_BIG = OPTION_MD_BASE, |
| 63 | OPTION_LITTLE, |
| 64 | OPTION_32BIT_DOUBLES, |
| 65 | OPTION_64BIT_DOUBLES, |
| 66 | OPTION_CONVENTIONAL_SECTION_NAMES, |
| 67 | OPTION_RENESAS_SECTION_NAMES, |
| 68 | OPTION_SMALL_DATA_LIMIT, |
| 69 | OPTION_RELAX, |
| 70 | OPTION_PID, |
| 71 | OPTION_INT_REGS, |
| 72 | OPTION_USES_GCC_ABI, |
| 73 | OPTION_USES_RX_ABI, |
| 74 | OPTION_CPU, |
| 75 | OPTION_DISALLOW_STRING_INSNS, |
| 76 | }; |
| 77 | |
| 78 | #define RX_SHORTOPTS "" |
| 79 | const char * md_shortopts = RX_SHORTOPTS; |
| 80 | |
| 81 | /* Assembler options. */ |
| 82 | struct option md_longopts[] = |
| 83 | { |
| 84 | {"mbig-endian-data", no_argument, NULL, OPTION_BIG}, |
| 85 | {"mlittle-endian-data", no_argument, NULL, OPTION_LITTLE}, |
| 86 | /* The next two switches are here because the |
| 87 | generic parts of the linker testsuite uses them. */ |
| 88 | {"EB", no_argument, NULL, OPTION_BIG}, |
| 89 | {"EL", no_argument, NULL, OPTION_LITTLE}, |
| 90 | {"m32bit-doubles", no_argument, NULL, OPTION_32BIT_DOUBLES}, |
| 91 | {"m64bit-doubles", no_argument, NULL, OPTION_64BIT_DOUBLES}, |
| 92 | /* This option is here mainly for the binutils testsuites, |
| 93 | as many of their tests assume conventional section naming. */ |
| 94 | {"muse-conventional-section-names", no_argument, NULL, OPTION_CONVENTIONAL_SECTION_NAMES}, |
| 95 | {"muse-renesas-section-names", no_argument, NULL, OPTION_RENESAS_SECTION_NAMES}, |
| 96 | {"msmall-data-limit", no_argument, NULL, OPTION_SMALL_DATA_LIMIT}, |
| 97 | {"relax", no_argument, NULL, OPTION_RELAX}, |
| 98 | {"mpid", no_argument, NULL, OPTION_PID}, |
| 99 | {"mint-register", required_argument, NULL, OPTION_INT_REGS}, |
| 100 | {"mgcc-abi", no_argument, NULL, OPTION_USES_GCC_ABI}, |
| 101 | {"mrx-abi", no_argument, NULL, OPTION_USES_RX_ABI}, |
| 102 | {"mcpu", required_argument, NULL, OPTION_CPU}, |
| 103 | {"mno-allow-string-insns", no_argument, NULL, OPTION_DISALLOW_STRING_INSNS}, |
| 104 | {NULL, no_argument, NULL, 0} |
| 105 | }; |
| 106 | size_t md_longopts_size = sizeof (md_longopts); |
| 107 | |
| 108 | struct cpu_type |
| 109 | { |
| 110 | const char *cpu_name; |
| 111 | enum rx_cpu_types type; |
| 112 | }; |
| 113 | |
| 114 | struct cpu_type cpu_type_list[] = |
| 115 | { |
| 116 | {"rx100",RX100}, |
| 117 | {"rx200",RX200}, |
| 118 | {"rx600",RX600}, |
| 119 | {"rx610",RX610}, |
| 120 | {"rxv2",RXV2} |
| 121 | }; |
| 122 | |
| 123 | int |
| 124 | md_parse_option (int c ATTRIBUTE_UNUSED, const char * arg ATTRIBUTE_UNUSED) |
| 125 | { |
| 126 | switch (c) |
| 127 | { |
| 128 | case OPTION_BIG: |
| 129 | target_big_endian = 1; |
| 130 | return 1; |
| 131 | |
| 132 | case OPTION_LITTLE: |
| 133 | target_big_endian = 0; |
| 134 | return 1; |
| 135 | |
| 136 | case OPTION_32BIT_DOUBLES: |
| 137 | elf_flags &= ~ E_FLAG_RX_64BIT_DOUBLES; |
| 138 | return 1; |
| 139 | |
| 140 | case OPTION_64BIT_DOUBLES: |
| 141 | elf_flags |= E_FLAG_RX_64BIT_DOUBLES; |
| 142 | return 1; |
| 143 | |
| 144 | case OPTION_CONVENTIONAL_SECTION_NAMES: |
| 145 | rx_use_conventional_section_names = TRUE; |
| 146 | return 1; |
| 147 | |
| 148 | case OPTION_RENESAS_SECTION_NAMES: |
| 149 | rx_use_conventional_section_names = FALSE; |
| 150 | return 1; |
| 151 | |
| 152 | case OPTION_SMALL_DATA_LIMIT: |
| 153 | rx_use_small_data_limit = TRUE; |
| 154 | return 1; |
| 155 | |
| 156 | case OPTION_RELAX: |
| 157 | linkrelax = 1; |
| 158 | return 1; |
| 159 | |
| 160 | case OPTION_PID: |
| 161 | rx_pid_mode = TRUE; |
| 162 | elf_flags |= E_FLAG_RX_PID; |
| 163 | return 1; |
| 164 | |
| 165 | case OPTION_INT_REGS: |
| 166 | rx_num_int_regs = atoi (optarg); |
| 167 | return 1; |
| 168 | |
| 169 | case OPTION_USES_GCC_ABI: |
| 170 | elf_flags &= ~ E_FLAG_RX_ABI; |
| 171 | return 1; |
| 172 | |
| 173 | case OPTION_USES_RX_ABI: |
| 174 | elf_flags |= E_FLAG_RX_ABI; |
| 175 | return 1; |
| 176 | |
| 177 | case OPTION_CPU: |
| 178 | { |
| 179 | unsigned int i; |
| 180 | for (i = 0; i < ARRAY_SIZE (cpu_type_list); i++) |
| 181 | { |
| 182 | if (strcasecmp (arg, cpu_type_list[i].cpu_name) == 0) |
| 183 | { |
| 184 | rx_cpu = cpu_type_list[i].type; |
| 185 | if (rx_cpu == RXV2) |
| 186 | elf_flags |= E_FLAG_RX_V2; |
| 187 | return 1; |
| 188 | } |
| 189 | } |
| 190 | as_warn (_("unrecognised RX CPU type %s"), arg); |
| 191 | break; |
| 192 | } |
| 193 | |
| 194 | case OPTION_DISALLOW_STRING_INSNS: |
| 195 | elf_flags |= E_FLAG_RX_SINSNS_SET | E_FLAG_RX_SINSNS_NO; |
| 196 | return 1; |
| 197 | } |
| 198 | |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | void |
| 203 | md_show_usage (FILE * stream) |
| 204 | { |
| 205 | fprintf (stream, _(" RX specific command line options:\n")); |
| 206 | fprintf (stream, _(" --mbig-endian-data\n")); |
| 207 | fprintf (stream, _(" --mlittle-endian-data [default]\n")); |
| 208 | fprintf (stream, _(" --m32bit-doubles [default]\n")); |
| 209 | fprintf (stream, _(" --m64bit-doubles\n")); |
| 210 | fprintf (stream, _(" --muse-conventional-section-names\n")); |
| 211 | fprintf (stream, _(" --muse-renesas-section-names [default]\n")); |
| 212 | fprintf (stream, _(" --msmall-data-limit\n")); |
| 213 | fprintf (stream, _(" --mrelax\n")); |
| 214 | fprintf (stream, _(" --mpid\n")); |
| 215 | fprintf (stream, _(" --mint-register=<value>\n")); |
| 216 | fprintf (stream, _(" --mcpu=<rx100|rx200|rx600|rx610|rxv2>\n")); |
| 217 | fprintf (stream, _(" --mno-allow-string-insns")); |
| 218 | } |
| 219 | |
| 220 | static void |
| 221 | s_bss (int ignore ATTRIBUTE_UNUSED) |
| 222 | { |
| 223 | int temp; |
| 224 | |
| 225 | temp = get_absolute_expression (); |
| 226 | subseg_set (bss_section, (subsegT) temp); |
| 227 | demand_empty_rest_of_line (); |
| 228 | } |
| 229 | |
| 230 | static void |
| 231 | rx_float_cons (int ignore ATTRIBUTE_UNUSED) |
| 232 | { |
| 233 | if (elf_flags & E_FLAG_RX_64BIT_DOUBLES) |
| 234 | return float_cons ('d'); |
| 235 | return float_cons ('f'); |
| 236 | } |
| 237 | |
| 238 | static char * |
| 239 | rx_strcasestr (const char *string, const char *sub) |
| 240 | { |
| 241 | int subl; |
| 242 | int strl; |
| 243 | |
| 244 | if (!sub || !sub[0]) |
| 245 | return (char *)string; |
| 246 | |
| 247 | subl = strlen (sub); |
| 248 | strl = strlen (string); |
| 249 | |
| 250 | while (strl >= subl) |
| 251 | { |
| 252 | /* strncasecmp is in libiberty. */ |
| 253 | if (strncasecmp (string, sub, subl) == 0) |
| 254 | return (char *)string; |
| 255 | |
| 256 | string ++; |
| 257 | strl --; |
| 258 | } |
| 259 | return NULL; |
| 260 | } |
| 261 | |
| 262 | static void |
| 263 | rx_include (int ignore) |
| 264 | { |
| 265 | FILE * try; |
| 266 | char * path; |
| 267 | char * filename; |
| 268 | const char * current_filename; |
| 269 | char * last_char; |
| 270 | const char * p; |
| 271 | const char * d; |
| 272 | char * f; |
| 273 | char end_char; |
| 274 | size_t len; |
| 275 | |
| 276 | /* The RX version of the .INCLUDE pseudo-op does not |
| 277 | have to have the filename inside double quotes. */ |
| 278 | SKIP_WHITESPACE (); |
| 279 | if (*input_line_pointer == '"') |
| 280 | { |
| 281 | /* Treat as the normal GAS .include pseudo-op. */ |
| 282 | s_include (ignore); |
| 283 | return; |
| 284 | } |
| 285 | |
| 286 | /* Get the filename. Spaces are allowed, NUL characters are not. */ |
| 287 | filename = input_line_pointer; |
| 288 | last_char = find_end_of_line (filename, FALSE); |
| 289 | input_line_pointer = last_char; |
| 290 | |
| 291 | while (last_char >= filename && (* last_char == ' ' || * last_char == '\n')) |
| 292 | -- last_char; |
| 293 | end_char = *(++ last_char); |
| 294 | * last_char = 0; |
| 295 | if (last_char == filename) |
| 296 | { |
| 297 | as_bad (_("no filename following .INCLUDE pseudo-op")); |
| 298 | * last_char = end_char; |
| 299 | return; |
| 300 | } |
| 301 | |
| 302 | current_filename = as_where (NULL); |
| 303 | f = XNEWVEC (char, strlen (current_filename) + strlen (filename) + 1); |
| 304 | |
| 305 | /* Check the filename. If [@]..FILE[@] is found then replace |
| 306 | this with the current assembler source filename, stripped |
| 307 | of any directory prefixes or extensions. */ |
| 308 | if ((p = rx_strcasestr (filename, "..file")) != NULL) |
| 309 | { |
| 310 | const char * c; |
| 311 | |
| 312 | len = 6; /* strlen ("..file"); */ |
| 313 | |
| 314 | if (p > filename && p[-1] == '@') |
| 315 | -- p, ++len; |
| 316 | |
| 317 | if (p[len] == '@') |
| 318 | len ++; |
| 319 | |
| 320 | for (d = c = current_filename; *c; c++) |
| 321 | if (IS_DIR_SEPARATOR (* c)) |
| 322 | d = c + 1; |
| 323 | for (c = d; *c; c++) |
| 324 | if (*c == '.') |
| 325 | break; |
| 326 | |
| 327 | sprintf (f, "%.*s%.*s%.*s", (int) (p - filename), filename, |
| 328 | (int) (c - d), d, |
| 329 | (int) (strlen (filename) - ((p + len) - filename)), |
| 330 | p + len); |
| 331 | } |
| 332 | else |
| 333 | strcpy (f, filename); |
| 334 | |
| 335 | /* RX .INCLUDE semantics say that 'filename' is located by: |
| 336 | |
| 337 | 1. If filename is absolute, just try that. Otherwise... |
| 338 | |
| 339 | 2. If the current source file includes a directory component |
| 340 | then prepend that to the filename and try. Otherwise... |
| 341 | |
| 342 | 3. Try any directories specified by the -I command line |
| 343 | option(s). |
| 344 | |
| 345 | 4 .Try a directory specifed by the INC100 environment variable. */ |
| 346 | |
| 347 | if (IS_ABSOLUTE_PATH (f)) |
| 348 | try = fopen (path = f, FOPEN_RT); |
| 349 | else |
| 350 | { |
| 351 | char * env = getenv ("INC100"); |
| 352 | |
| 353 | try = NULL; |
| 354 | |
| 355 | len = strlen (current_filename); |
| 356 | if ((size_t) include_dir_maxlen > len) |
| 357 | len = include_dir_maxlen; |
| 358 | if (env && strlen (env) > len) |
| 359 | len = strlen (env); |
| 360 | |
| 361 | path = XNEWVEC (char, strlen (f) + len + 5); |
| 362 | |
| 363 | if (current_filename != NULL) |
| 364 | { |
| 365 | for (d = NULL, p = current_filename; *p; p++) |
| 366 | if (IS_DIR_SEPARATOR (* p)) |
| 367 | d = p; |
| 368 | |
| 369 | if (d != NULL) |
| 370 | { |
| 371 | sprintf (path, "%.*s/%s", (int) (d - current_filename), current_filename, |
| 372 | f); |
| 373 | try = fopen (path, FOPEN_RT); |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | if (try == NULL) |
| 378 | { |
| 379 | int i; |
| 380 | |
| 381 | for (i = 0; i < include_dir_count; i++) |
| 382 | { |
| 383 | sprintf (path, "%s/%s", include_dirs[i], f); |
| 384 | if ((try = fopen (path, FOPEN_RT)) != NULL) |
| 385 | break; |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | if (try == NULL && env != NULL) |
| 390 | { |
| 391 | sprintf (path, "%s/%s", env, f); |
| 392 | try = fopen (path, FOPEN_RT); |
| 393 | } |
| 394 | |
| 395 | free (f); |
| 396 | } |
| 397 | |
| 398 | if (try == NULL) |
| 399 | { |
| 400 | as_bad (_("unable to locate include file: %s"), filename); |
| 401 | free (path); |
| 402 | } |
| 403 | else |
| 404 | { |
| 405 | fclose (try); |
| 406 | register_dependency (path); |
| 407 | input_scrub_insert_file (path); |
| 408 | } |
| 409 | |
| 410 | * last_char = end_char; |
| 411 | } |
| 412 | |
| 413 | static void |
| 414 | parse_rx_section (char * name) |
| 415 | { |
| 416 | asection * sec; |
| 417 | int type; |
| 418 | int attr = SHF_ALLOC | SHF_EXECINSTR; |
| 419 | int align = 1; |
| 420 | char end_char; |
| 421 | |
| 422 | do |
| 423 | { |
| 424 | char * p; |
| 425 | |
| 426 | SKIP_WHITESPACE (); |
| 427 | for (p = input_line_pointer; *p && strchr ("\n\t, =", *p) == NULL; p++) |
| 428 | ; |
| 429 | end_char = *p; |
| 430 | *p = 0; |
| 431 | |
| 432 | if (strcasecmp (input_line_pointer, "ALIGN") == 0) |
| 433 | { |
| 434 | *p = end_char; |
| 435 | |
| 436 | if (end_char == ' ') |
| 437 | while (ISSPACE (*p)) |
| 438 | p++; |
| 439 | |
| 440 | if (*p == '=') |
| 441 | { |
| 442 | ++ p; |
| 443 | while (ISSPACE (*p)) |
| 444 | p++; |
| 445 | switch (*p) |
| 446 | { |
| 447 | case '2': align = 1; break; |
| 448 | case '4': align = 2; break; |
| 449 | case '8': align = 3; break; |
| 450 | default: |
| 451 | as_bad (_("unrecognised alignment value in .SECTION directive: %s"), p); |
| 452 | ignore_rest_of_line (); |
| 453 | return; |
| 454 | } |
| 455 | ++ p; |
| 456 | } |
| 457 | |
| 458 | end_char = *p; |
| 459 | } |
| 460 | else if (strcasecmp (input_line_pointer, "CODE") == 0) |
| 461 | attr = SHF_ALLOC | SHF_EXECINSTR; |
| 462 | else if (strcasecmp (input_line_pointer, "DATA") == 0) |
| 463 | attr = SHF_ALLOC | SHF_WRITE; |
| 464 | else if (strcasecmp (input_line_pointer, "ROMDATA") == 0) |
| 465 | attr = SHF_ALLOC; |
| 466 | else |
| 467 | { |
| 468 | as_bad (_("unknown parameter following .SECTION directive: %s"), |
| 469 | input_line_pointer); |
| 470 | |
| 471 | *p = end_char; |
| 472 | input_line_pointer = p + 1; |
| 473 | ignore_rest_of_line (); |
| 474 | return; |
| 475 | } |
| 476 | |
| 477 | *p = end_char; |
| 478 | input_line_pointer = p + 1; |
| 479 | } |
| 480 | while (end_char != '\n' && end_char != 0); |
| 481 | |
| 482 | if ((sec = bfd_get_section_by_name (stdoutput, name)) == NULL) |
| 483 | { |
| 484 | if (strcmp (name, "B") && strcmp (name, "B_1") && strcmp (name, "B_2")) |
| 485 | type = SHT_NULL; |
| 486 | else |
| 487 | type = SHT_NOBITS; |
| 488 | |
| 489 | obj_elf_change_section (name, type, attr, 0, NULL, FALSE, FALSE); |
| 490 | } |
| 491 | else /* Try not to redefine a section, especially B_1. */ |
| 492 | { |
| 493 | int flags = sec->flags; |
| 494 | |
| 495 | type = elf_section_type (sec); |
| 496 | |
| 497 | attr = ((flags & SEC_READONLY) ? 0 : SHF_WRITE) |
| 498 | | ((flags & SEC_ALLOC) ? SHF_ALLOC : 0) |
| 499 | | ((flags & SEC_CODE) ? SHF_EXECINSTR : 0) |
| 500 | | ((flags & SEC_MERGE) ? SHF_MERGE : 0) |
| 501 | | ((flags & SEC_STRINGS) ? SHF_STRINGS : 0) |
| 502 | | ((flags & SEC_THREAD_LOCAL) ? SHF_TLS : 0); |
| 503 | |
| 504 | obj_elf_change_section (name, type, attr, 0, NULL, FALSE, FALSE); |
| 505 | } |
| 506 | |
| 507 | bfd_set_section_alignment (stdoutput, now_seg, align); |
| 508 | } |
| 509 | |
| 510 | static void |
| 511 | rx_section (int ignore) |
| 512 | { |
| 513 | char * p; |
| 514 | |
| 515 | /* The as100 assembler supports a different syntax for the .section |
| 516 | pseudo-op. So check for it and handle it here if necessary. */ |
| 517 | SKIP_WHITESPACE (); |
| 518 | |
| 519 | /* Peek past the section name to see if arguments follow. */ |
| 520 | for (p = input_line_pointer; *p; p++) |
| 521 | if (*p == ',' || *p == '\n') |
| 522 | break; |
| 523 | |
| 524 | if (*p == ',') |
| 525 | { |
| 526 | int len = p - input_line_pointer; |
| 527 | |
| 528 | while (ISSPACE (*++p)) |
| 529 | ; |
| 530 | |
| 531 | if (*p != '"' && *p != '#') |
| 532 | { |
| 533 | char *name = xmemdup0 (input_line_pointer, len); |
| 534 | |
| 535 | input_line_pointer = p; |
| 536 | parse_rx_section (name); |
| 537 | return; |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | obj_elf_section (ignore); |
| 542 | } |
| 543 | |
| 544 | static void |
| 545 | rx_list (int ignore ATTRIBUTE_UNUSED) |
| 546 | { |
| 547 | SKIP_WHITESPACE (); |
| 548 | |
| 549 | if (strncasecmp (input_line_pointer, "OFF", 3)) |
| 550 | listing_list (0); |
| 551 | else if (strncasecmp (input_line_pointer, "ON", 2)) |
| 552 | listing_list (1); |
| 553 | else |
| 554 | as_warn (_("expecting either ON or OFF after .list")); |
| 555 | } |
| 556 | |
| 557 | /* Like the .rept pseudo op, but supports the |
| 558 | use of ..MACREP inside the repeated region. */ |
| 559 | |
| 560 | static void |
| 561 | rx_rept (int ignore ATTRIBUTE_UNUSED) |
| 562 | { |
| 563 | int count = get_absolute_expression (); |
| 564 | |
| 565 | do_repeat_with_expander (count, "MREPEAT", "ENDR", "..MACREP"); |
| 566 | } |
| 567 | |
| 568 | /* Like cons() accept that strings are allowed. */ |
| 569 | |
| 570 | static void |
| 571 | rx_cons (int size) |
| 572 | { |
| 573 | SKIP_WHITESPACE (); |
| 574 | |
| 575 | if (* input_line_pointer == '"') |
| 576 | stringer (8+0); |
| 577 | else |
| 578 | cons (size); |
| 579 | } |
| 580 | |
| 581 | static void |
| 582 | rx_nop (int ignore ATTRIBUTE_UNUSED) |
| 583 | { |
| 584 | ignore_rest_of_line (); |
| 585 | } |
| 586 | |
| 587 | static void |
| 588 | rx_unimp (int idx) |
| 589 | { |
| 590 | as_warn (_("The \".%s\" pseudo-op is not implemented\n"), |
| 591 | md_pseudo_table[idx].poc_name); |
| 592 | ignore_rest_of_line (); |
| 593 | } |
| 594 | |
| 595 | /* The target specific pseudo-ops which we support. */ |
| 596 | const pseudo_typeS md_pseudo_table[] = |
| 597 | { |
| 598 | /* These are unimplemented. They're listed first so that we can use |
| 599 | the poc_value as the index into this array, to get the name of |
| 600 | the pseudo. So, keep these (1) first, and (2) in order, with (3) |
| 601 | the poc_value's in sequence. */ |
| 602 | { "btglb", rx_unimp, 0 }, |
| 603 | { "call", rx_unimp, 1 }, |
| 604 | { "einsf", rx_unimp, 2 }, |
| 605 | { "fb", rx_unimp, 3 }, |
| 606 | { "fbsym", rx_unimp, 4 }, |
| 607 | { "id", rx_unimp, 5 }, |
| 608 | { "initsct", rx_unimp, 6 }, |
| 609 | { "insf", rx_unimp, 7 }, |
| 610 | { "instr", rx_unimp, 8 }, |
| 611 | { "lbba", rx_unimp, 9 }, |
| 612 | { "len", rx_unimp, 10 }, |
| 613 | { "optj", rx_unimp, 11 }, |
| 614 | { "rvector", rx_unimp, 12 }, |
| 615 | { "sb", rx_unimp, 13 }, |
| 616 | { "sbbit", rx_unimp, 14 }, |
| 617 | { "sbsym", rx_unimp, 15 }, |
| 618 | { "sbsym16", rx_unimp, 16 }, |
| 619 | |
| 620 | /* These are the do-nothing pseudos. */ |
| 621 | { "stk", rx_nop, 0 }, |
| 622 | /* The manual documents ".stk" but the compiler emits ".stack". */ |
| 623 | { "stack", rx_nop, 0 }, |
| 624 | |
| 625 | /* These are Renesas as100 assembler pseudo-ops that we do support. */ |
| 626 | { "addr", rx_cons, 3 }, |
| 627 | { "align", s_align_bytes, 2 }, |
| 628 | { "byte", rx_cons, 1 }, |
| 629 | { "fixed", float_cons, 'f' }, |
| 630 | { "form", listing_psize, 0 }, |
| 631 | { "glb", s_globl, 0 }, |
| 632 | { "include", rx_include, 0 }, |
| 633 | { "list", rx_list, 0 }, |
| 634 | { "lword", rx_cons, 4 }, |
| 635 | { "mrepeat", rx_rept, 0 }, |
| 636 | { "section", rx_section, 0 }, |
| 637 | |
| 638 | /* FIXME: The following pseudo-ops place their values (and associated |
| 639 | label if present) in the data section, regardless of whatever |
| 640 | section we are currently in. At the moment this code does not |
| 641 | implement that part of the semantics. */ |
| 642 | { "blka", s_space, 3 }, |
| 643 | { "blkb", s_space, 1 }, |
| 644 | { "blkd", s_space, 8 }, |
| 645 | { "blkf", s_space, 4 }, |
| 646 | { "blkl", s_space, 4 }, |
| 647 | { "blkw", s_space, 2 }, |
| 648 | |
| 649 | /* Our "standard" pseudos. */ |
| 650 | { "double", rx_float_cons, 0 }, |
| 651 | { "bss", s_bss, 0 }, |
| 652 | { "3byte", cons, 3 }, |
| 653 | { "int", cons, 4 }, |
| 654 | { "word", cons, 4 }, |
| 655 | |
| 656 | { "fetchalign", rx_fetchalign, 0 }, |
| 657 | |
| 658 | /* End of list marker. */ |
| 659 | { NULL, NULL, 0 } |
| 660 | }; |
| 661 | |
| 662 | static asymbol * gp_symbol; |
| 663 | static asymbol * rx_pid_symbol; |
| 664 | |
| 665 | static symbolS * rx_pidreg_symbol; |
| 666 | static symbolS * rx_gpreg_symbol; |
| 667 | |
| 668 | void |
| 669 | md_begin (void) |
| 670 | { |
| 671 | /* Make the __gp and __pid_base symbols now rather |
| 672 | than after the symbol table is frozen. We only do this |
| 673 | when supporting small data limits because otherwise we |
| 674 | pollute the symbol table. */ |
| 675 | |
| 676 | /* The meta-registers %pidreg and %gpreg depend on what other |
| 677 | options are specified. The __rx_*_defined symbols exist so we |
| 678 | can .ifdef asm code based on what options were passed to gas, |
| 679 | without needing a preprocessor */ |
| 680 | |
| 681 | if (rx_pid_mode) |
| 682 | { |
| 683 | rx_pid_register = 13 - rx_num_int_regs; |
| 684 | rx_pid_symbol = symbol_get_bfdsym (symbol_find_or_make ("__pid_base")); |
| 685 | rx_pidreg_symbol = symbol_find_or_make ("__rx_pidreg_defined"); |
| 686 | S_SET_VALUE (rx_pidreg_symbol, rx_pid_register); |
| 687 | S_SET_SEGMENT (rx_pidreg_symbol, absolute_section); |
| 688 | } |
| 689 | |
| 690 | if (rx_use_small_data_limit) |
| 691 | { |
| 692 | if (rx_pid_mode) |
| 693 | rx_gp_register = rx_pid_register - 1; |
| 694 | else |
| 695 | rx_gp_register = 13 - rx_num_int_regs; |
| 696 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); |
| 697 | rx_gpreg_symbol = symbol_find_or_make ("__rx_gpreg_defined"); |
| 698 | S_SET_VALUE (rx_gpreg_symbol, rx_gp_register); |
| 699 | S_SET_SEGMENT (rx_gpreg_symbol, absolute_section); |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | char * rx_lex_start; |
| 704 | char * rx_lex_end; |
| 705 | |
| 706 | /* These negative numbers are found in rx_bytesT.n_base for non-opcode |
| 707 | md_frags */ |
| 708 | #define RX_NBASE_FETCHALIGN -1 |
| 709 | |
| 710 | typedef struct rx_bytesT |
| 711 | { |
| 712 | char base[4]; |
| 713 | /* If this is negative, it's a special-purpose frag as per the defines above. */ |
| 714 | int n_base; |
| 715 | char ops[8]; |
| 716 | int n_ops; |
| 717 | struct |
| 718 | { |
| 719 | expressionS exp; |
| 720 | char offset; |
| 721 | char nbits; |
| 722 | char type; /* RXREL_*. */ |
| 723 | int reloc; |
| 724 | fixS * fixP; |
| 725 | } fixups[2]; |
| 726 | int n_fixups; |
| 727 | struct |
| 728 | { |
| 729 | char type; |
| 730 | char field_pos; |
| 731 | char val_ofs; |
| 732 | } relax[2]; |
| 733 | int n_relax; |
| 734 | int link_relax; |
| 735 | fixS *link_relax_fixP; |
| 736 | char times_grown; |
| 737 | char times_shrank; |
| 738 | } rx_bytesT; |
| 739 | |
| 740 | static rx_bytesT rx_bytes; |
| 741 | /* We set n_ops to be "size of next opcode" if the next opcode doesn't relax. */ |
| 742 | static rx_bytesT *fetchalign_bytes = NULL; |
| 743 | |
| 744 | static void |
| 745 | rx_fetchalign (int ignore ATTRIBUTE_UNUSED) |
| 746 | { |
| 747 | char * bytes; |
| 748 | fragS * frag_then; |
| 749 | |
| 750 | memset (& rx_bytes, 0, sizeof (rx_bytes)); |
| 751 | rx_bytes.n_base = RX_NBASE_FETCHALIGN; |
| 752 | |
| 753 | bytes = frag_more (8); |
| 754 | frag_then = frag_now; |
| 755 | frag_variant (rs_machine_dependent, |
| 756 | 0 /* max_chars */, |
| 757 | 0 /* var */, |
| 758 | 0 /* subtype */, |
| 759 | 0 /* symbol */, |
| 760 | 0 /* offset */, |
| 761 | 0 /* opcode */); |
| 762 | frag_then->fr_opcode = bytes; |
| 763 | frag_then->fr_subtype = 0; |
| 764 | fetchalign_bytes = frag_then->tc_frag_data; |
| 765 | } |
| 766 | |
| 767 | void |
| 768 | rx_relax (int type, int pos) |
| 769 | { |
| 770 | rx_bytes.relax[rx_bytes.n_relax].type = type; |
| 771 | rx_bytes.relax[rx_bytes.n_relax].field_pos = pos; |
| 772 | rx_bytes.relax[rx_bytes.n_relax].val_ofs = rx_bytes.n_base + rx_bytes.n_ops; |
| 773 | rx_bytes.n_relax ++; |
| 774 | } |
| 775 | |
| 776 | void |
| 777 | rx_linkrelax_dsp (int pos) |
| 778 | { |
| 779 | switch (pos) |
| 780 | { |
| 781 | case 4: |
| 782 | rx_bytes.link_relax |= RX_RELAXA_DSP4; |
| 783 | break; |
| 784 | case 6: |
| 785 | rx_bytes.link_relax |= RX_RELAXA_DSP6; |
| 786 | break; |
| 787 | case 14: |
| 788 | rx_bytes.link_relax |= RX_RELAXA_DSP14; |
| 789 | break; |
| 790 | } |
| 791 | } |
| 792 | |
| 793 | void |
| 794 | rx_linkrelax_imm (int pos) |
| 795 | { |
| 796 | switch (pos) |
| 797 | { |
| 798 | case 6: |
| 799 | rx_bytes.link_relax |= RX_RELAXA_IMM6; |
| 800 | break; |
| 801 | case 12: |
| 802 | rx_bytes.link_relax |= RX_RELAXA_IMM12; |
| 803 | break; |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | void |
| 808 | rx_linkrelax_branch (void) |
| 809 | { |
| 810 | rx_bytes.link_relax |= RX_RELAXA_BRA; |
| 811 | } |
| 812 | |
| 813 | static void |
| 814 | rx_fixup (expressionS exp, int offsetbits, int nbits, int type) |
| 815 | { |
| 816 | rx_bytes.fixups[rx_bytes.n_fixups].exp = exp; |
| 817 | rx_bytes.fixups[rx_bytes.n_fixups].offset = offsetbits; |
| 818 | rx_bytes.fixups[rx_bytes.n_fixups].nbits = nbits; |
| 819 | rx_bytes.fixups[rx_bytes.n_fixups].type = type; |
| 820 | rx_bytes.fixups[rx_bytes.n_fixups].reloc = exp.X_md; |
| 821 | rx_bytes.n_fixups ++; |
| 822 | } |
| 823 | |
| 824 | #define rx_field_fixup(exp, offset, nbits, type) \ |
| 825 | rx_fixup (exp, offset, nbits, type) |
| 826 | |
| 827 | #define rx_op_fixup(exp, offset, nbits, type) \ |
| 828 | rx_fixup (exp, offset + 8 * rx_bytes.n_base, nbits, type) |
| 829 | |
| 830 | void |
| 831 | rx_base1 (int b1) |
| 832 | { |
| 833 | rx_bytes.base[0] = b1; |
| 834 | rx_bytes.n_base = 1; |
| 835 | } |
| 836 | |
| 837 | void |
| 838 | rx_base2 (int b1, int b2) |
| 839 | { |
| 840 | rx_bytes.base[0] = b1; |
| 841 | rx_bytes.base[1] = b2; |
| 842 | rx_bytes.n_base = 2; |
| 843 | } |
| 844 | |
| 845 | void |
| 846 | rx_base3 (int b1, int b2, int b3) |
| 847 | { |
| 848 | rx_bytes.base[0] = b1; |
| 849 | rx_bytes.base[1] = b2; |
| 850 | rx_bytes.base[2] = b3; |
| 851 | rx_bytes.n_base = 3; |
| 852 | } |
| 853 | |
| 854 | void |
| 855 | rx_base4 (int b1, int b2, int b3, int b4) |
| 856 | { |
| 857 | rx_bytes.base[0] = b1; |
| 858 | rx_bytes.base[1] = b2; |
| 859 | rx_bytes.base[2] = b3; |
| 860 | rx_bytes.base[3] = b4; |
| 861 | rx_bytes.n_base = 4; |
| 862 | } |
| 863 | |
| 864 | /* This gets complicated when the field spans bytes, because fields |
| 865 | are numbered from the MSB of the first byte as zero, and bits are |
| 866 | stored LSB towards the LSB of the byte. Thus, a simple four-bit |
| 867 | insertion of 12 at position 4 of 0x00 yields: 0x0b. A three-bit |
| 868 | insertion of b'MXL at position 7 is like this: |
| 869 | |
| 870 | - - - - - - - - - - - - - - - - |
| 871 | M X L */ |
| 872 | |
| 873 | void |
| 874 | rx_field (int val, int pos, int sz) |
| 875 | { |
| 876 | int valm; |
| 877 | int bytep, bitp; |
| 878 | |
| 879 | if (sz > 0) |
| 880 | { |
| 881 | if (val < 0 || val >= (1 << sz)) |
| 882 | as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val, sz); |
| 883 | } |
| 884 | else |
| 885 | { |
| 886 | sz = - sz; |
| 887 | if (val < -(1 << (sz - 1)) || val >= (1 << (sz - 1))) |
| 888 | as_bad (_("Value %d doesn't fit in signed %d-bit field"), val, sz); |
| 889 | } |
| 890 | |
| 891 | /* This code points at 'M' in the above example. */ |
| 892 | bytep = pos / 8; |
| 893 | bitp = pos % 8; |
| 894 | |
| 895 | while (bitp + sz > 8) |
| 896 | { |
| 897 | int ssz = 8 - bitp; |
| 898 | int svalm; |
| 899 | |
| 900 | svalm = val >> (sz - ssz); |
| 901 | svalm = svalm & ((1 << ssz) - 1); |
| 902 | svalm = svalm << (8 - bitp - ssz); |
| 903 | gas_assert (bytep < rx_bytes.n_base); |
| 904 | rx_bytes.base[bytep] |= svalm; |
| 905 | |
| 906 | bitp = 0; |
| 907 | sz -= ssz; |
| 908 | bytep ++; |
| 909 | } |
| 910 | valm = val & ((1 << sz) - 1); |
| 911 | valm = valm << (8 - bitp - sz); |
| 912 | gas_assert (bytep < rx_bytes.n_base); |
| 913 | rx_bytes.base[bytep] |= valm; |
| 914 | } |
| 915 | |
| 916 | /* Special case of the above, for 3-bit displacements of 2..9. */ |
| 917 | |
| 918 | void |
| 919 | rx_disp3 (expressionS exp, int pos) |
| 920 | { |
| 921 | rx_field_fixup (exp, pos, 3, RXREL_PCREL); |
| 922 | } |
| 923 | |
| 924 | /* Special case of the above, for split 5-bit displacements. Assumes |
| 925 | the displacement has been checked with rx_disp5op. */ |
| 926 | /* ---- -432 1--- 0--- */ |
| 927 | |
| 928 | void |
| 929 | rx_field5s (expressionS exp) |
| 930 | { |
| 931 | int val; |
| 932 | |
| 933 | val = exp.X_add_number; |
| 934 | rx_bytes.base[0] |= val >> 2; |
| 935 | rx_bytes.base[1] |= (val << 6) & 0x80; |
| 936 | rx_bytes.base[1] |= (val << 3) & 0x08; |
| 937 | } |
| 938 | |
| 939 | /* ---- ---- 4--- 3210 */ |
| 940 | |
| 941 | void |
| 942 | rx_field5s2 (expressionS exp) |
| 943 | { |
| 944 | int val; |
| 945 | |
| 946 | val = exp.X_add_number; |
| 947 | rx_bytes.base[1] |= (val << 3) & 0x80; |
| 948 | rx_bytes.base[1] |= (val ) & 0x0f; |
| 949 | } |
| 950 | |
| 951 | #define OP(x) rx_bytes.ops[rx_bytes.n_ops++] = (x) |
| 952 | |
| 953 | #define F_PRECISION 2 |
| 954 | |
| 955 | void |
| 956 | rx_op (expressionS exp, int nbytes, int type) |
| 957 | { |
| 958 | offsetT v = 0; |
| 959 | |
| 960 | if ((exp.X_op == O_constant || exp.X_op == O_big) |
| 961 | && type != RXREL_PCREL) |
| 962 | { |
| 963 | if (exp.X_op == O_big) |
| 964 | { |
| 965 | if (exp.X_add_number == -1) |
| 966 | { |
| 967 | LITTLENUM_TYPE w[2]; |
| 968 | char * ip = rx_bytes.ops + rx_bytes.n_ops; |
| 969 | |
| 970 | gen_to_words (w, F_PRECISION, 8); |
| 971 | #if RX_OPCODE_BIG_ENDIAN |
| 972 | ip[0] = w[0] >> 8; |
| 973 | ip[1] = w[0]; |
| 974 | ip[2] = w[1] >> 8; |
| 975 | ip[3] = w[1]; |
| 976 | #else |
| 977 | ip[3] = w[0] >> 8; |
| 978 | ip[2] = w[0]; |
| 979 | ip[1] = w[1] >> 8; |
| 980 | ip[0] = w[1]; |
| 981 | #endif |
| 982 | rx_bytes.n_ops += 4; |
| 983 | return; |
| 984 | } |
| 985 | |
| 986 | v = ((generic_bignum[1] & LITTLENUM_MASK) << LITTLENUM_NUMBER_OF_BITS) |
| 987 | | (generic_bignum[0] & LITTLENUM_MASK); |
| 988 | |
| 989 | } |
| 990 | else |
| 991 | v = exp.X_add_number; |
| 992 | |
| 993 | while (nbytes) |
| 994 | { |
| 995 | #if RX_OPCODE_BIG_ENDIAN |
| 996 | OP ((v >> (8 * (nbytes - 1))) & 0xff); |
| 997 | #else |
| 998 | OP (v & 0xff); |
| 999 | v >>= 8; |
| 1000 | #endif |
| 1001 | nbytes --; |
| 1002 | } |
| 1003 | } |
| 1004 | else |
| 1005 | { |
| 1006 | rx_op_fixup (exp, rx_bytes.n_ops * 8, nbytes * 8, type); |
| 1007 | memset (rx_bytes.ops + rx_bytes.n_ops, 0, nbytes); |
| 1008 | rx_bytes.n_ops += nbytes; |
| 1009 | } |
| 1010 | } |
| 1011 | |
| 1012 | int |
| 1013 | rx_wrap (void) |
| 1014 | { |
| 1015 | return 0; |
| 1016 | } |
| 1017 | |
| 1018 | #define APPEND(B, N_B) \ |
| 1019 | if (rx_bytes.N_B) \ |
| 1020 | { \ |
| 1021 | memcpy (bytes + idx, rx_bytes.B, rx_bytes.N_B); \ |
| 1022 | idx += rx_bytes.N_B; \ |
| 1023 | } |
| 1024 | |
| 1025 | void |
| 1026 | rx_frag_init (fragS * fragP) |
| 1027 | { |
| 1028 | if (rx_bytes.n_relax || rx_bytes.link_relax || rx_bytes.n_base < 0) |
| 1029 | { |
| 1030 | fragP->tc_frag_data = XNEW (rx_bytesT); |
| 1031 | memcpy (fragP->tc_frag_data, & rx_bytes, sizeof (rx_bytesT)); |
| 1032 | } |
| 1033 | else |
| 1034 | fragP->tc_frag_data = 0; |
| 1035 | } |
| 1036 | |
| 1037 | /* Handle the as100's version of the .equ pseudo-op. It has the syntax: |
| 1038 | <symbol_name> .equ <expression> */ |
| 1039 | |
| 1040 | static void |
| 1041 | rx_equ (char * name, char * expression) |
| 1042 | { |
| 1043 | char saved_name_end_char; |
| 1044 | char * name_end; |
| 1045 | char * saved_ilp; |
| 1046 | |
| 1047 | while (ISSPACE (* name)) |
| 1048 | name ++; |
| 1049 | |
| 1050 | for (name_end = name + 1; *name_end; name_end ++) |
| 1051 | if (! ISALNUM (* name_end)) |
| 1052 | break; |
| 1053 | |
| 1054 | saved_name_end_char = * name_end; |
| 1055 | * name_end = 0; |
| 1056 | |
| 1057 | saved_ilp = input_line_pointer; |
| 1058 | input_line_pointer = expression; |
| 1059 | |
| 1060 | equals (name, 1); |
| 1061 | |
| 1062 | input_line_pointer = saved_ilp; |
| 1063 | * name_end = saved_name_end_char; |
| 1064 | } |
| 1065 | |
| 1066 | /* Look for Renesas as100 pseudo-ops that occur after a symbol name |
| 1067 | rather than at the start of a line. (eg .EQU or .DEFINE). If one |
| 1068 | is found, process it and return TRUE otherwise return FALSE. */ |
| 1069 | |
| 1070 | static bfd_boolean |
| 1071 | scan_for_infix_rx_pseudo_ops (char * str) |
| 1072 | { |
| 1073 | char * p; |
| 1074 | char * pseudo_op; |
| 1075 | char * dot = strchr (str, '.'); |
| 1076 | |
| 1077 | if (dot == NULL || dot == str) |
| 1078 | return FALSE; |
| 1079 | |
| 1080 | /* A real pseudo-op must be preceeded by whitespace. */ |
| 1081 | if (dot[-1] != ' ' && dot[-1] != '\t') |
| 1082 | return FALSE; |
| 1083 | |
| 1084 | pseudo_op = dot + 1; |
| 1085 | |
| 1086 | if (!ISALNUM (* pseudo_op)) |
| 1087 | return FALSE; |
| 1088 | |
| 1089 | for (p = pseudo_op + 1; ISALNUM (* p); p++) |
| 1090 | ; |
| 1091 | |
| 1092 | if (strncasecmp ("EQU", pseudo_op, p - pseudo_op) == 0) |
| 1093 | rx_equ (str, p); |
| 1094 | else if (strncasecmp ("DEFINE", pseudo_op, p - pseudo_op) == 0) |
| 1095 | as_warn (_("The .DEFINE pseudo-op is not implemented")); |
| 1096 | else if (strncasecmp ("MACRO", pseudo_op, p - pseudo_op) == 0) |
| 1097 | as_warn (_("The .MACRO pseudo-op is not implemented")); |
| 1098 | else if (strncasecmp ("BTEQU", pseudo_op, p - pseudo_op) == 0) |
| 1099 | as_warn (_("The .BTEQU pseudo-op is not implemented.")); |
| 1100 | else |
| 1101 | return FALSE; |
| 1102 | |
| 1103 | return TRUE; |
| 1104 | } |
| 1105 | |
| 1106 | void |
| 1107 | md_assemble (char * str) |
| 1108 | { |
| 1109 | char * bytes; |
| 1110 | int idx = 0; |
| 1111 | int i, rel; |
| 1112 | fragS * frag_then = frag_now; |
| 1113 | expressionS *exp; |
| 1114 | |
| 1115 | memset (& rx_bytes, 0, sizeof (rx_bytes)); |
| 1116 | |
| 1117 | rx_lex_init (str, str + strlen (str)); |
| 1118 | if (scan_for_infix_rx_pseudo_ops (str)) |
| 1119 | return; |
| 1120 | rx_parse (); |
| 1121 | |
| 1122 | /* This simplifies the relaxation code. */ |
| 1123 | if (rx_bytes.n_relax || rx_bytes.link_relax) |
| 1124 | { |
| 1125 | /* We do it this way because we want the frag to have the |
| 1126 | rx_bytes in it, which we initialize above. */ |
| 1127 | bytes = frag_more (12); |
| 1128 | frag_then = frag_now; |
| 1129 | frag_variant (rs_machine_dependent, |
| 1130 | 0 /* max_chars */, |
| 1131 | 0 /* var */, |
| 1132 | 0 /* subtype */, |
| 1133 | 0 /* symbol */, |
| 1134 | 0 /* offset */, |
| 1135 | 0 /* opcode */); |
| 1136 | frag_then->fr_opcode = bytes; |
| 1137 | frag_then->fr_fix += rx_bytes.n_base + rx_bytes.n_ops; |
| 1138 | frag_then->fr_subtype = rx_bytes.n_base + rx_bytes.n_ops; |
| 1139 | } |
| 1140 | else |
| 1141 | { |
| 1142 | bytes = frag_more (rx_bytes.n_base + rx_bytes.n_ops); |
| 1143 | frag_then = frag_now; |
| 1144 | if (fetchalign_bytes) |
| 1145 | fetchalign_bytes->n_ops = rx_bytes.n_base + rx_bytes.n_ops; |
| 1146 | } |
| 1147 | |
| 1148 | fetchalign_bytes = NULL; |
| 1149 | |
| 1150 | APPEND (base, n_base); |
| 1151 | APPEND (ops, n_ops); |
| 1152 | |
| 1153 | if (rx_bytes.link_relax && rx_bytes.n_fixups) |
| 1154 | { |
| 1155 | fixS * f; |
| 1156 | |
| 1157 | f = fix_new (frag_then, |
| 1158 | (char *) bytes - frag_then->fr_literal, |
| 1159 | 0, |
| 1160 | abs_section_sym, |
| 1161 | rx_bytes.link_relax | rx_bytes.n_fixups, |
| 1162 | 0, |
| 1163 | BFD_RELOC_RX_RELAX); |
| 1164 | frag_then->tc_frag_data->link_relax_fixP = f; |
| 1165 | } |
| 1166 | |
| 1167 | for (i = 0; i < rx_bytes.n_fixups; i ++) |
| 1168 | { |
| 1169 | /* index: [nbytes][type] */ |
| 1170 | static int reloc_map[5][4] = |
| 1171 | { |
| 1172 | { 0, 0, 0, BFD_RELOC_RX_DIR3U_PCREL }, |
| 1173 | { BFD_RELOC_8, BFD_RELOC_RX_8U, BFD_RELOC_RX_NEG8, BFD_RELOC_8_PCREL }, |
| 1174 | { BFD_RELOC_RX_16_OP, BFD_RELOC_RX_16U, BFD_RELOC_RX_NEG16, BFD_RELOC_16_PCREL }, |
| 1175 | { BFD_RELOC_RX_24_OP, BFD_RELOC_RX_24U, BFD_RELOC_RX_NEG24, BFD_RELOC_24_PCREL }, |
| 1176 | { BFD_RELOC_RX_32_OP, BFD_RELOC_32, BFD_RELOC_RX_NEG32, BFD_RELOC_32_PCREL }, |
| 1177 | }; |
| 1178 | fixS * f; |
| 1179 | |
| 1180 | idx = rx_bytes.fixups[i].offset / 8; |
| 1181 | rel = reloc_map [rx_bytes.fixups[i].nbits / 8][(int) rx_bytes.fixups[i].type]; |
| 1182 | |
| 1183 | if (rx_bytes.fixups[i].reloc) |
| 1184 | rel = rx_bytes.fixups[i].reloc; |
| 1185 | |
| 1186 | if (frag_then->tc_frag_data) |
| 1187 | exp = & frag_then->tc_frag_data->fixups[i].exp; |
| 1188 | else |
| 1189 | exp = & rx_bytes.fixups[i].exp; |
| 1190 | |
| 1191 | f = fix_new_exp (frag_then, |
| 1192 | (char *) bytes + idx - frag_then->fr_literal, |
| 1193 | rx_bytes.fixups[i].nbits / 8, |
| 1194 | exp, |
| 1195 | rx_bytes.fixups[i].type == RXREL_PCREL ? 1 : 0, |
| 1196 | rel); |
| 1197 | if (frag_then->tc_frag_data) |
| 1198 | frag_then->tc_frag_data->fixups[i].fixP = f; |
| 1199 | } |
| 1200 | |
| 1201 | dwarf2_emit_insn (idx); |
| 1202 | } |
| 1203 | |
| 1204 | void |
| 1205 | rx_md_end (void) |
| 1206 | { |
| 1207 | } |
| 1208 | |
| 1209 | /* Write a value out to the object file, using the appropriate endianness. */ |
| 1210 | |
| 1211 | void |
| 1212 | md_number_to_chars (char * buf, valueT val, int n) |
| 1213 | { |
| 1214 | if (target_big_endian) |
| 1215 | number_to_chars_bigendian (buf, val, n); |
| 1216 | else |
| 1217 | number_to_chars_littleendian (buf, val, n); |
| 1218 | } |
| 1219 | |
| 1220 | static struct |
| 1221 | { |
| 1222 | const char * fname; |
| 1223 | int reloc; |
| 1224 | } |
| 1225 | reloc_functions[] = |
| 1226 | { |
| 1227 | { "gp", BFD_RELOC_GPREL16 }, |
| 1228 | { 0, 0 } |
| 1229 | }; |
| 1230 | |
| 1231 | void |
| 1232 | md_operand (expressionS * exp ATTRIBUTE_UNUSED) |
| 1233 | { |
| 1234 | int reloc = 0; |
| 1235 | int i; |
| 1236 | |
| 1237 | for (i = 0; reloc_functions[i].fname; i++) |
| 1238 | { |
| 1239 | int flen = strlen (reloc_functions[i].fname); |
| 1240 | |
| 1241 | if (input_line_pointer[0] == '%' |
| 1242 | && strncasecmp (input_line_pointer + 1, reloc_functions[i].fname, flen) == 0 |
| 1243 | && input_line_pointer[flen + 1] == '(') |
| 1244 | { |
| 1245 | reloc = reloc_functions[i].reloc; |
| 1246 | input_line_pointer += flen + 2; |
| 1247 | break; |
| 1248 | } |
| 1249 | } |
| 1250 | if (reloc == 0) |
| 1251 | return; |
| 1252 | |
| 1253 | expression (exp); |
| 1254 | if (* input_line_pointer == ')') |
| 1255 | input_line_pointer ++; |
| 1256 | |
| 1257 | exp->X_md = reloc; |
| 1258 | } |
| 1259 | |
| 1260 | valueT |
| 1261 | md_section_align (segT segment, valueT size) |
| 1262 | { |
| 1263 | int align = bfd_get_section_alignment (stdoutput, segment); |
| 1264 | return ((size + (1 << align) - 1) & -(1 << align)); |
| 1265 | } |
| 1266 | |
| 1267 | /* NOP - 1 cycle */ |
| 1268 | static unsigned char nop_1[] = { 0x03}; |
| 1269 | /* MOV.L R0,R0 - 1 cycle */ |
| 1270 | static unsigned char nop_2[] = { 0xef, 0x00}; |
| 1271 | /* MAX R0,R0 - 1 cycle */ |
| 1272 | static unsigned char nop_3[] = { 0xfc, 0x13, 0x00 }; |
| 1273 | /* MUL #1,R0 - 1 cycle */ |
| 1274 | static unsigned char nop_4[] = { 0x76, 0x10, 0x01, 0x00 }; |
| 1275 | /* MUL #1,R0 - 1 cycle */ |
| 1276 | static unsigned char nop_5[] = { 0x77, 0x10, 0x01, 0x00, 0x00 }; |
| 1277 | /* MUL #1,R0 - 1 cycle */ |
| 1278 | static unsigned char nop_6[] = { 0x74, 0x10, 0x01, 0x00, 0x00, 0x00 }; |
| 1279 | /* MAX 0x80000000,R0 - 1 cycle */ |
| 1280 | static unsigned char nop_7[] = { 0xFD, 0x70, 0x40, 0x00, 0x00, 0x00, 0x80 }; |
| 1281 | |
| 1282 | static unsigned char *nops[] = { NULL, nop_1, nop_2, nop_3, nop_4, nop_5, nop_6, nop_7 }; |
| 1283 | #define BIGGEST_NOP 7 |
| 1284 | |
| 1285 | /* When relaxing, we need to output a reloc for any .align directive |
| 1286 | so that we can retain this alignment as we adjust opcode sizes. */ |
| 1287 | void |
| 1288 | rx_handle_align (fragS * frag) |
| 1289 | { |
| 1290 | /* If handling an alignment frag, use an optimal NOP pattern. |
| 1291 | Only do this if a fill value has not already been provided. |
| 1292 | FIXME: This test fails if the provided fill value is zero. */ |
| 1293 | if ((frag->fr_type == rs_align |
| 1294 | || frag->fr_type == rs_align_code) |
| 1295 | && subseg_text_p (now_seg)) |
| 1296 | { |
| 1297 | int count = (frag->fr_next->fr_address |
| 1298 | - frag->fr_address |
| 1299 | - frag->fr_fix); |
| 1300 | unsigned char *base = (unsigned char *)frag->fr_literal + frag->fr_fix; |
| 1301 | |
| 1302 | if (* base == 0) |
| 1303 | { |
| 1304 | if (count > BIGGEST_NOP) |
| 1305 | { |
| 1306 | base[0] = 0x2e; |
| 1307 | base[1] = count; |
| 1308 | frag->fr_var = 2; |
| 1309 | } |
| 1310 | else if (count > 0) |
| 1311 | { |
| 1312 | memcpy (base, nops[count], count); |
| 1313 | frag->fr_var = count; |
| 1314 | } |
| 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | if (linkrelax |
| 1319 | && (frag->fr_type == rs_align |
| 1320 | || frag->fr_type == rs_align_code) |
| 1321 | && frag->fr_address + frag->fr_fix > 0 |
| 1322 | && frag->fr_offset > 0 |
| 1323 | && now_seg != bss_section) |
| 1324 | { |
| 1325 | fix_new (frag, frag->fr_fix, 0, |
| 1326 | &abs_symbol, RX_RELAXA_ALIGN + frag->fr_offset, |
| 1327 | 0, BFD_RELOC_RX_RELAX); |
| 1328 | /* For the purposes of relaxation, this relocation is attached |
| 1329 | to the byte *after* the alignment - i.e. the byte that must |
| 1330 | remain aligned. */ |
| 1331 | fix_new (frag->fr_next, 0, 0, |
| 1332 | &abs_symbol, RX_RELAXA_ELIGN + frag->fr_offset, |
| 1333 | 0, BFD_RELOC_RX_RELAX); |
| 1334 | } |
| 1335 | } |
| 1336 | |
| 1337 | const char * |
| 1338 | md_atof (int type, char * litP, int * sizeP) |
| 1339 | { |
| 1340 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
| 1341 | } |
| 1342 | |
| 1343 | symbolS * |
| 1344 | md_undefined_symbol (char * name ATTRIBUTE_UNUSED) |
| 1345 | { |
| 1346 | return NULL; |
| 1347 | } |
| 1348 | |
| 1349 | /*----------------------------------------------------------------------*/ |
| 1350 | /* To recap: we estimate everything based on md_estimate_size, then |
| 1351 | adjust based on rx_relax_frag. When it all settles, we call |
| 1352 | md_convert frag to update the bytes. The relaxation types and |
| 1353 | relocations are in fragP->tc_frag_data, which is a copy of that |
| 1354 | rx_bytes. |
| 1355 | |
| 1356 | Our scheme is as follows: fr_fix has the size of the smallest |
| 1357 | opcode (like BRA.S). We store the number of total bytes we need in |
| 1358 | fr_subtype. When we're done relaxing, we use fr_subtype and the |
| 1359 | existing opcode bytes to figure out what actual opcode we need to |
| 1360 | put in there. If the fixup isn't resolvable now, we use the |
| 1361 | maximal size. */ |
| 1362 | |
| 1363 | #define TRACE_RELAX 0 |
| 1364 | #define tprintf if (TRACE_RELAX) printf |
| 1365 | |
| 1366 | typedef enum |
| 1367 | { |
| 1368 | OT_other, |
| 1369 | OT_bra, |
| 1370 | OT_beq, |
| 1371 | OT_bne, |
| 1372 | OT_bsr, |
| 1373 | OT_bcc |
| 1374 | } op_type_T; |
| 1375 | |
| 1376 | /* We're looking for these types of relaxations: |
| 1377 | |
| 1378 | BRA.S 00001dsp |
| 1379 | BRA.B 00101110 dspppppp |
| 1380 | BRA.W 00111000 dspppppp pppppppp |
| 1381 | BRA.A 00000100 dspppppp pppppppp pppppppp |
| 1382 | |
| 1383 | BEQ.S 00010dsp |
| 1384 | BEQ.B 00100000 dspppppp |
| 1385 | BEQ.W 00111010 dspppppp pppppppp |
| 1386 | |
| 1387 | BNE.S 00011dsp |
| 1388 | BNE.B 00100001 dspppppp |
| 1389 | BNE.W 00111011 dspppppp pppppppp |
| 1390 | |
| 1391 | BSR.W 00111001 dspppppp pppppppp |
| 1392 | BSR.A 00000101 dspppppp pppppppp pppppppp |
| 1393 | |
| 1394 | Bcc.B 0010cond dspppppp |
| 1395 | |
| 1396 | Additionally, we can synthesize longer conditional branches using |
| 1397 | pairs of opcodes, one with an inverted conditional (flip LSB): |
| 1398 | |
| 1399 | Bcc.W 0010ncnd 00000110 00111000 dspppppp pppppppp |
| 1400 | Bcc.A 0010ncnd 00000111 00000100 dspppppp pppppppp pppppppp |
| 1401 | BEQ.A 00011100 00000100 dspppppp pppppppp pppppppp |
| 1402 | BNE.A 00010100 00000100 dspppppp pppppppp pppppppp */ |
| 1403 | |
| 1404 | /* Given the opcode bytes at OP, figure out which opcode it is and |
| 1405 | return the type of opcode. We use this to re-encode the opcode as |
| 1406 | a different size later. */ |
| 1407 | |
| 1408 | static op_type_T |
| 1409 | rx_opcode_type (char * op) |
| 1410 | { |
| 1411 | unsigned char b = (unsigned char) op[0]; |
| 1412 | |
| 1413 | switch (b & 0xf8) |
| 1414 | { |
| 1415 | case 0x08: return OT_bra; |
| 1416 | case 0x10: return OT_beq; |
| 1417 | case 0x18: return OT_bne; |
| 1418 | } |
| 1419 | |
| 1420 | switch (b) |
| 1421 | { |
| 1422 | case 0x2e: return OT_bra; |
| 1423 | case 0x38: return OT_bra; |
| 1424 | case 0x04: return OT_bra; |
| 1425 | |
| 1426 | case 0x20: return OT_beq; |
| 1427 | case 0x3a: return OT_beq; |
| 1428 | |
| 1429 | case 0x21: return OT_bne; |
| 1430 | case 0x3b: return OT_bne; |
| 1431 | |
| 1432 | case 0x39: return OT_bsr; |
| 1433 | case 0x05: return OT_bsr; |
| 1434 | } |
| 1435 | |
| 1436 | if ((b & 0xf0) == 0x20) |
| 1437 | return OT_bcc; |
| 1438 | |
| 1439 | return OT_other; |
| 1440 | } |
| 1441 | |
| 1442 | /* Returns zero if *addrP has the target address. Else returns nonzero |
| 1443 | if we cannot compute the target address yet. */ |
| 1444 | |
| 1445 | static int |
| 1446 | rx_frag_fix_value (fragS * fragP, |
| 1447 | segT segment, |
| 1448 | int which, |
| 1449 | addressT * addrP, |
| 1450 | int need_diff, |
| 1451 | addressT * sym_addr) |
| 1452 | { |
| 1453 | addressT addr = 0; |
| 1454 | rx_bytesT * b = fragP->tc_frag_data; |
| 1455 | expressionS * exp = & b->fixups[which].exp; |
| 1456 | |
| 1457 | if (need_diff && exp->X_op != O_subtract) |
| 1458 | return 1; |
| 1459 | |
| 1460 | if (exp->X_add_symbol) |
| 1461 | { |
| 1462 | if (S_FORCE_RELOC (exp->X_add_symbol, 1)) |
| 1463 | return 1; |
| 1464 | if (S_GET_SEGMENT (exp->X_add_symbol) != segment) |
| 1465 | return 1; |
| 1466 | addr += S_GET_VALUE (exp->X_add_symbol); |
| 1467 | } |
| 1468 | |
| 1469 | if (exp->X_op_symbol) |
| 1470 | { |
| 1471 | if (exp->X_op != O_subtract) |
| 1472 | return 1; |
| 1473 | if (S_FORCE_RELOC (exp->X_op_symbol, 1)) |
| 1474 | return 1; |
| 1475 | if (S_GET_SEGMENT (exp->X_op_symbol) != segment) |
| 1476 | return 1; |
| 1477 | addr -= S_GET_VALUE (exp->X_op_symbol); |
| 1478 | } |
| 1479 | if (sym_addr) |
| 1480 | * sym_addr = addr; |
| 1481 | addr += exp->X_add_number; |
| 1482 | * addrP = addr; |
| 1483 | return 0; |
| 1484 | } |
| 1485 | |
| 1486 | /* Estimate how big the opcode is after this relax pass. The return |
| 1487 | value is the difference between fr_fix and the actual size. We |
| 1488 | compute the total size in rx_relax_frag and store it in fr_subtype, |
| 1489 | sowe only need to subtract fx_fix and return it. */ |
| 1490 | |
| 1491 | int |
| 1492 | md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, segT segment ATTRIBUTE_UNUSED) |
| 1493 | { |
| 1494 | int opfixsize; |
| 1495 | int delta; |
| 1496 | |
| 1497 | tprintf ("\033[32m est frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d\033[0m\n", |
| 1498 | (unsigned long) (fragP->fr_address |
| 1499 | + (fragP->fr_opcode - fragP->fr_literal)), |
| 1500 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, |
| 1501 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype); |
| 1502 | |
| 1503 | /* This is the size of the opcode that's accounted for in fr_fix. */ |
| 1504 | opfixsize = fragP->fr_fix - (fragP->fr_opcode - fragP->fr_literal); |
| 1505 | /* This is the size of the opcode that isn't. */ |
| 1506 | delta = (fragP->fr_subtype - opfixsize); |
| 1507 | |
| 1508 | tprintf (" -> opfixsize %d delta %d\n", opfixsize, delta); |
| 1509 | return delta; |
| 1510 | } |
| 1511 | |
| 1512 | /* Given a frag FRAGP, return the "next" frag that contains an |
| 1513 | opcode. Assumes the next opcode is relaxable, and thus rs_machine_dependent. */ |
| 1514 | |
| 1515 | static fragS * |
| 1516 | rx_next_opcode (fragS *fragP) |
| 1517 | { |
| 1518 | do { |
| 1519 | fragP = fragP->fr_next; |
| 1520 | } while (fragP && fragP->fr_type != rs_machine_dependent); |
| 1521 | return fragP; |
| 1522 | } |
| 1523 | |
| 1524 | /* Given the new addresses for this relax pass, figure out how big |
| 1525 | each opcode must be. We store the total number of bytes needed in |
| 1526 | fr_subtype. The return value is the difference between the size |
| 1527 | after the last pass and the size after this pass, so we use the old |
| 1528 | fr_subtype to calculate the difference. */ |
| 1529 | |
| 1530 | int |
| 1531 | rx_relax_frag (segT segment ATTRIBUTE_UNUSED, fragS * fragP, long stretch) |
| 1532 | { |
| 1533 | addressT addr0, sym_addr; |
| 1534 | addressT mypc; |
| 1535 | int disp; |
| 1536 | int oldsize = fragP->fr_subtype; |
| 1537 | int newsize = oldsize; |
| 1538 | op_type_T optype; |
| 1539 | /* Index of relaxation we care about. */ |
| 1540 | int ri; |
| 1541 | |
| 1542 | tprintf ("\033[36mrelax frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d str %ld\033[0m\n", |
| 1543 | (unsigned long) (fragP->fr_address |
| 1544 | + (fragP->fr_opcode - fragP->fr_literal)), |
| 1545 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, |
| 1546 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype, stretch); |
| 1547 | |
| 1548 | mypc = fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal); |
| 1549 | |
| 1550 | if (fragP->tc_frag_data->n_base == RX_NBASE_FETCHALIGN) |
| 1551 | { |
| 1552 | unsigned int next_size; |
| 1553 | if (fragP->fr_next == NULL) |
| 1554 | return 0; |
| 1555 | |
| 1556 | next_size = fragP->tc_frag_data->n_ops; |
| 1557 | if (next_size == 0) |
| 1558 | { |
| 1559 | fragS *n = rx_next_opcode (fragP); |
| 1560 | next_size = n->fr_subtype; |
| 1561 | } |
| 1562 | |
| 1563 | fragP->fr_subtype = (8-(mypc & 7)) & 7; |
| 1564 | tprintf("subtype %u\n", fragP->fr_subtype); |
| 1565 | if (fragP->fr_subtype >= next_size) |
| 1566 | fragP->fr_subtype = 0; |
| 1567 | tprintf ("\033[34m -> mypc %lu next_size %u new %d old %d delta %d (fetchalign)\033[0m\n", |
| 1568 | (unsigned long) (mypc & 7), |
| 1569 | next_size, fragP->fr_subtype, oldsize, fragP->fr_subtype-oldsize); |
| 1570 | |
| 1571 | newsize = fragP->fr_subtype; |
| 1572 | |
| 1573 | return newsize - oldsize; |
| 1574 | } |
| 1575 | |
| 1576 | optype = rx_opcode_type (fragP->fr_opcode); |
| 1577 | |
| 1578 | /* In the one case where we have both a disp and imm relaxation, we want |
| 1579 | the imm relaxation here. */ |
| 1580 | ri = 0; |
| 1581 | if (fragP->tc_frag_data->n_relax > 1 |
| 1582 | && fragP->tc_frag_data->relax[0].type == RX_RELAX_DISP) |
| 1583 | ri = 1; |
| 1584 | |
| 1585 | /* Try to get the target address. */ |
| 1586 | if (rx_frag_fix_value (fragP, segment, ri, & addr0, |
| 1587 | fragP->tc_frag_data->relax[ri].type != RX_RELAX_BRANCH, |
| 1588 | & sym_addr)) |
| 1589 | { |
| 1590 | /* If we don't, we must use the maximum size for the linker. |
| 1591 | Note that we don't use synthetically expanded conditionals |
| 1592 | for this. */ |
| 1593 | switch (fragP->tc_frag_data->relax[ri].type) |
| 1594 | { |
| 1595 | case RX_RELAX_BRANCH: |
| 1596 | switch (optype) |
| 1597 | { |
| 1598 | case OT_bra: |
| 1599 | case OT_bsr: |
| 1600 | newsize = 4; |
| 1601 | break; |
| 1602 | case OT_beq: |
| 1603 | case OT_bne: |
| 1604 | newsize = 3; |
| 1605 | break; |
| 1606 | case OT_bcc: |
| 1607 | newsize = 2; |
| 1608 | break; |
| 1609 | case OT_other: |
| 1610 | newsize = oldsize; |
| 1611 | break; |
| 1612 | } |
| 1613 | break; |
| 1614 | |
| 1615 | case RX_RELAX_IMM: |
| 1616 | newsize = fragP->tc_frag_data->relax[ri].val_ofs + 4; |
| 1617 | break; |
| 1618 | } |
| 1619 | fragP->fr_subtype = newsize; |
| 1620 | tprintf (" -> new %d old %d delta %d (external)\n", newsize, oldsize, newsize-oldsize); |
| 1621 | return newsize - oldsize; |
| 1622 | } |
| 1623 | |
| 1624 | if (sym_addr > mypc) |
| 1625 | addr0 += stretch; |
| 1626 | |
| 1627 | switch (fragP->tc_frag_data->relax[ri].type) |
| 1628 | { |
| 1629 | case RX_RELAX_BRANCH: |
| 1630 | tprintf ("branch, addr %08lx pc %08lx disp %ld\n", |
| 1631 | (unsigned long) addr0, (unsigned long) mypc, |
| 1632 | (long) (addr0 - mypc)); |
| 1633 | disp = (int) addr0 - (int) mypc; |
| 1634 | |
| 1635 | switch (optype) |
| 1636 | { |
| 1637 | case OT_bcc: |
| 1638 | if (disp >= -128 && (disp - (oldsize-2)) <= 127) |
| 1639 | /* bcc.b */ |
| 1640 | newsize = 2; |
| 1641 | else if (disp >= -32768 && (disp - (oldsize-5)) <= 32767) |
| 1642 | /* bncc.b/bra.w */ |
| 1643 | newsize = 5; |
| 1644 | else |
| 1645 | /* bncc.b/bra.a */ |
| 1646 | newsize = 6; |
| 1647 | break; |
| 1648 | |
| 1649 | case OT_beq: |
| 1650 | case OT_bne: |
| 1651 | if ((disp - (oldsize-1)) >= 3 && (disp - (oldsize-1)) <= 10 && !linkrelax) |
| 1652 | /* beq.s */ |
| 1653 | newsize = 1; |
| 1654 | else if (disp >= -128 && (disp - (oldsize-2)) <= 127) |
| 1655 | /* beq.b */ |
| 1656 | newsize = 2; |
| 1657 | else if (disp >= -32768 && (disp - (oldsize-3)) <= 32767) |
| 1658 | /* beq.w */ |
| 1659 | newsize = 3; |
| 1660 | else |
| 1661 | /* bne.s/bra.a */ |
| 1662 | newsize = 5; |
| 1663 | break; |
| 1664 | |
| 1665 | case OT_bra: |
| 1666 | case OT_bsr: |
| 1667 | if ((disp - (oldsize-1)) >= 3 && (disp - (oldsize-1)) <= 10 && !linkrelax) |
| 1668 | /* bra.s */ |
| 1669 | newsize = 1; |
| 1670 | else if (disp >= -128 && (disp - (oldsize-2)) <= 127) |
| 1671 | /* bra.b */ |
| 1672 | newsize = 2; |
| 1673 | else if (disp >= -32768 && (disp - (oldsize-3)) <= 32767) |
| 1674 | /* bra.w */ |
| 1675 | newsize = 3; |
| 1676 | else |
| 1677 | /* bra.a */ |
| 1678 | newsize = 4; |
| 1679 | break; |
| 1680 | |
| 1681 | case OT_other: |
| 1682 | break; |
| 1683 | } |
| 1684 | tprintf (" - newsize %d\n", newsize); |
| 1685 | break; |
| 1686 | |
| 1687 | case RX_RELAX_IMM: |
| 1688 | tprintf ("other, addr %08lx pc %08lx LI %d OF %d\n", |
| 1689 | (unsigned long) addr0, (unsigned long) mypc, |
| 1690 | fragP->tc_frag_data->relax[ri].field_pos, |
| 1691 | fragP->tc_frag_data->relax[ri].val_ofs); |
| 1692 | |
| 1693 | newsize = fragP->tc_frag_data->relax[ri].val_ofs; |
| 1694 | |
| 1695 | if ((long) addr0 >= -128 && (long) addr0 <= 127) |
| 1696 | newsize += 1; |
| 1697 | else if ((long) addr0 >= -32768 && (long) addr0 <= 32767) |
| 1698 | newsize += 2; |
| 1699 | else if ((long) addr0 >= -8388608 && (long) addr0 <= 8388607) |
| 1700 | newsize += 3; |
| 1701 | else |
| 1702 | newsize += 4; |
| 1703 | break; |
| 1704 | |
| 1705 | default: |
| 1706 | break; |
| 1707 | } |
| 1708 | |
| 1709 | if (fragP->tc_frag_data->relax[ri].type == RX_RELAX_BRANCH) |
| 1710 | switch (optype) |
| 1711 | { |
| 1712 | case OT_bra: |
| 1713 | case OT_bcc: |
| 1714 | case OT_beq: |
| 1715 | case OT_bne: |
| 1716 | break; |
| 1717 | case OT_bsr: |
| 1718 | if (newsize < 3) |
| 1719 | newsize = 3; |
| 1720 | break; |
| 1721 | case OT_other: |
| 1722 | break; |
| 1723 | } |
| 1724 | |
| 1725 | /* This prevents infinite loops in align-heavy sources. */ |
| 1726 | if (newsize < oldsize) |
| 1727 | { |
| 1728 | if (fragP->tc_frag_data->times_shrank > 10 |
| 1729 | && fragP->tc_frag_data->times_grown > 10) |
| 1730 | newsize = oldsize; |
| 1731 | if (fragP->tc_frag_data->times_shrank < 20) |
| 1732 | fragP->tc_frag_data->times_shrank ++; |
| 1733 | } |
| 1734 | else if (newsize > oldsize) |
| 1735 | { |
| 1736 | if (fragP->tc_frag_data->times_grown < 20) |
| 1737 | fragP->tc_frag_data->times_grown ++; |
| 1738 | } |
| 1739 | |
| 1740 | fragP->fr_subtype = newsize; |
| 1741 | tprintf (" -> new %d old %d delta %d\n", newsize, oldsize, newsize-oldsize); |
| 1742 | return newsize - oldsize; |
| 1743 | } |
| 1744 | |
| 1745 | /* This lets us test for the opcode type and the desired size in a |
| 1746 | switch statement. */ |
| 1747 | #define OPCODE(type,size) ((type) * 16 + (size)) |
| 1748 | |
| 1749 | /* Given the opcode stored in fr_opcode and the number of bytes we |
| 1750 | think we need, encode a new opcode. We stored a pointer to the |
| 1751 | fixup for this opcode in the tc_frag_data structure. If we can do |
| 1752 | the fixup here, we change the relocation type to "none" (we test |
| 1753 | for that in tc_gen_reloc) else we change it to the right type for |
| 1754 | the new (biggest) opcode. */ |
| 1755 | |
| 1756 | void |
| 1757 | md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED, |
| 1758 | segT segment ATTRIBUTE_UNUSED, |
| 1759 | fragS * fragP ATTRIBUTE_UNUSED) |
| 1760 | { |
| 1761 | rx_bytesT * rxb = fragP->tc_frag_data; |
| 1762 | addressT addr0, mypc; |
| 1763 | int disp; |
| 1764 | int reloc_adjust; |
| 1765 | bfd_reloc_code_real_type reloc_type; |
| 1766 | char * op = fragP->fr_opcode; |
| 1767 | int keep_reloc = 0; |
| 1768 | int ri; |
| 1769 | int fi = (rxb->n_fixups > 1) ? 1 : 0; |
| 1770 | fixS * fix = rxb->fixups[fi].fixP; |
| 1771 | |
| 1772 | tprintf ("\033[31mconvrt frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d\033[0m\n", |
| 1773 | (unsigned long) (fragP->fr_address |
| 1774 | + (fragP->fr_opcode - fragP->fr_literal)), |
| 1775 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, |
| 1776 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, |
| 1777 | fragP->fr_subtype); |
| 1778 | |
| 1779 | #if TRACE_RELAX |
| 1780 | { |
| 1781 | int i; |
| 1782 | |
| 1783 | printf ("lit 0x%p opc 0x%p", fragP->fr_literal, fragP->fr_opcode); |
| 1784 | for (i = 0; i < 10; i++) |
| 1785 | printf (" %02x", (unsigned char) (fragP->fr_opcode[i])); |
| 1786 | printf ("\n"); |
| 1787 | } |
| 1788 | #endif |
| 1789 | |
| 1790 | if (fragP->tc_frag_data->n_base == RX_NBASE_FETCHALIGN) |
| 1791 | { |
| 1792 | int count = fragP->fr_subtype; |
| 1793 | if (count == 0) |
| 1794 | ; |
| 1795 | else if (count > BIGGEST_NOP) |
| 1796 | { |
| 1797 | op[0] = 0x2e; |
| 1798 | op[1] = count; |
| 1799 | } |
| 1800 | else if (count > 0) |
| 1801 | { |
| 1802 | memcpy (op, nops[count], count); |
| 1803 | } |
| 1804 | } |
| 1805 | |
| 1806 | /* In the one case where we have both a disp and imm relaxation, we want |
| 1807 | the imm relaxation here. */ |
| 1808 | ri = 0; |
| 1809 | if (fragP->tc_frag_data->n_relax > 1 |
| 1810 | && fragP->tc_frag_data->relax[0].type == RX_RELAX_DISP) |
| 1811 | ri = 1; |
| 1812 | |
| 1813 | /* We used a new frag for this opcode, so the opcode address should |
| 1814 | be the frag address. */ |
| 1815 | mypc = fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal); |
| 1816 | |
| 1817 | /* Try to get the target address. If we fail here, we just use the |
| 1818 | largest format. */ |
| 1819 | if (rx_frag_fix_value (fragP, segment, 0, & addr0, |
| 1820 | fragP->tc_frag_data->relax[ri].type != RX_RELAX_BRANCH, 0)) |
| 1821 | { |
| 1822 | /* We don't know the target address. */ |
| 1823 | keep_reloc = 1; |
| 1824 | addr0 = 0; |
| 1825 | disp = 0; |
| 1826 | } |
| 1827 | else |
| 1828 | { |
| 1829 | /* We know the target address, and it's in addr0. */ |
| 1830 | disp = (int) addr0 - (int) mypc; |
| 1831 | } |
| 1832 | |
| 1833 | if (linkrelax) |
| 1834 | keep_reloc = 1; |
| 1835 | |
| 1836 | reloc_type = BFD_RELOC_NONE; |
| 1837 | reloc_adjust = 0; |
| 1838 | |
| 1839 | tprintf ("convert, op is %d, disp %d (%lx-%lx)\n", |
| 1840 | rx_opcode_type (fragP->fr_opcode), disp, |
| 1841 | (unsigned long) addr0, (unsigned long) mypc); |
| 1842 | switch (fragP->tc_frag_data->relax[ri].type) |
| 1843 | { |
| 1844 | case RX_RELAX_BRANCH: |
| 1845 | switch (OPCODE (rx_opcode_type (fragP->fr_opcode), fragP->fr_subtype)) |
| 1846 | { |
| 1847 | case OPCODE (OT_bra, 1): /* BRA.S - no change. */ |
| 1848 | op[0] = 0x08 + (disp & 7); |
| 1849 | break; |
| 1850 | case OPCODE (OT_bra, 2): /* BRA.B - 8 bit. */ |
| 1851 | op[0] = 0x2e; |
| 1852 | op[1] = disp; |
| 1853 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; |
| 1854 | reloc_adjust = 1; |
| 1855 | break; |
| 1856 | case OPCODE (OT_bra, 3): /* BRA.W - 16 bit. */ |
| 1857 | op[0] = 0x38; |
| 1858 | #if RX_OPCODE_BIG_ENDIAN |
| 1859 | op[1] = (disp >> 8) & 0xff; |
| 1860 | op[2] = disp; |
| 1861 | #else |
| 1862 | op[2] = (disp >> 8) & 0xff; |
| 1863 | op[1] = disp; |
| 1864 | #endif |
| 1865 | reloc_adjust = 1; |
| 1866 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; |
| 1867 | break; |
| 1868 | case OPCODE (OT_bra, 4): /* BRA.A - 24 bit. */ |
| 1869 | op[0] = 0x04; |
| 1870 | #if RX_OPCODE_BIG_ENDIAN |
| 1871 | op[1] = (disp >> 16) & 0xff; |
| 1872 | op[2] = (disp >> 8) & 0xff; |
| 1873 | op[3] = disp; |
| 1874 | #else |
| 1875 | op[3] = (disp >> 16) & 0xff; |
| 1876 | op[2] = (disp >> 8) & 0xff; |
| 1877 | op[1] = disp; |
| 1878 | #endif |
| 1879 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; |
| 1880 | reloc_adjust = 1; |
| 1881 | break; |
| 1882 | |
| 1883 | case OPCODE (OT_beq, 1): /* BEQ.S - no change. */ |
| 1884 | op[0] = 0x10 + (disp & 7); |
| 1885 | break; |
| 1886 | case OPCODE (OT_beq, 2): /* BEQ.B - 8 bit. */ |
| 1887 | op[0] = 0x20; |
| 1888 | op[1] = disp; |
| 1889 | reloc_adjust = 1; |
| 1890 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; |
| 1891 | break; |
| 1892 | case OPCODE (OT_beq, 3): /* BEQ.W - 16 bit. */ |
| 1893 | op[0] = 0x3a; |
| 1894 | #if RX_OPCODE_BIG_ENDIAN |
| 1895 | op[1] = (disp >> 8) & 0xff; |
| 1896 | op[2] = disp; |
| 1897 | #else |
| 1898 | op[2] = (disp >> 8) & 0xff; |
| 1899 | op[1] = disp; |
| 1900 | #endif |
| 1901 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; |
| 1902 | reloc_adjust = 1; |
| 1903 | break; |
| 1904 | case OPCODE (OT_beq, 5): /* BEQ.A - synthetic. */ |
| 1905 | op[0] = 0x1d; /* bne.s .+5. */ |
| 1906 | op[1] = 0x04; /* bra.a dsp:24. */ |
| 1907 | disp -= 1; |
| 1908 | #if RX_OPCODE_BIG_ENDIAN |
| 1909 | op[2] = (disp >> 16) & 0xff; |
| 1910 | op[3] = (disp >> 8) & 0xff; |
| 1911 | op[4] = disp; |
| 1912 | #else |
| 1913 | op[4] = (disp >> 16) & 0xff; |
| 1914 | op[3] = (disp >> 8) & 0xff; |
| 1915 | op[2] = disp; |
| 1916 | #endif |
| 1917 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; |
| 1918 | reloc_adjust = 2; |
| 1919 | break; |
| 1920 | |
| 1921 | case OPCODE (OT_bne, 1): /* BNE.S - no change. */ |
| 1922 | op[0] = 0x18 + (disp & 7); |
| 1923 | break; |
| 1924 | case OPCODE (OT_bne, 2): /* BNE.B - 8 bit. */ |
| 1925 | op[0] = 0x21; |
| 1926 | op[1] = disp; |
| 1927 | reloc_adjust = 1; |
| 1928 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; |
| 1929 | break; |
| 1930 | case OPCODE (OT_bne, 3): /* BNE.W - 16 bit. */ |
| 1931 | op[0] = 0x3b; |
| 1932 | #if RX_OPCODE_BIG_ENDIAN |
| 1933 | op[1] = (disp >> 8) & 0xff; |
| 1934 | op[2] = disp; |
| 1935 | #else |
| 1936 | op[2] = (disp >> 8) & 0xff; |
| 1937 | op[1] = disp; |
| 1938 | #endif |
| 1939 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; |
| 1940 | reloc_adjust = 1; |
| 1941 | break; |
| 1942 | case OPCODE (OT_bne, 5): /* BNE.A - synthetic. */ |
| 1943 | op[0] = 0x15; /* beq.s .+5. */ |
| 1944 | op[1] = 0x04; /* bra.a dsp:24. */ |
| 1945 | disp -= 1; |
| 1946 | #if RX_OPCODE_BIG_ENDIAN |
| 1947 | op[2] = (disp >> 16) & 0xff; |
| 1948 | op[3] = (disp >> 8) & 0xff; |
| 1949 | op[4] = disp; |
| 1950 | #else |
| 1951 | op[4] = (disp >> 16) & 0xff; |
| 1952 | op[3] = (disp >> 8) & 0xff; |
| 1953 | op[2] = disp; |
| 1954 | #endif |
| 1955 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; |
| 1956 | reloc_adjust = 2; |
| 1957 | break; |
| 1958 | |
| 1959 | case OPCODE (OT_bsr, 3): /* BSR.W - 16 bit. */ |
| 1960 | op[0] = 0x39; |
| 1961 | #if RX_OPCODE_BIG_ENDIAN |
| 1962 | op[1] = (disp >> 8) & 0xff; |
| 1963 | op[2] = disp; |
| 1964 | #else |
| 1965 | op[2] = (disp >> 8) & 0xff; |
| 1966 | op[1] = disp; |
| 1967 | #endif |
| 1968 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; |
| 1969 | reloc_adjust = 0; |
| 1970 | break; |
| 1971 | case OPCODE (OT_bsr, 4): /* BSR.A - 24 bit. */ |
| 1972 | op[0] = 0x05; |
| 1973 | #if RX_OPCODE_BIG_ENDIAN |
| 1974 | op[1] = (disp >> 16) & 0xff; |
| 1975 | op[2] = (disp >> 8) & 0xff; |
| 1976 | op[3] = disp; |
| 1977 | #else |
| 1978 | op[3] = (disp >> 16) & 0xff; |
| 1979 | op[2] = (disp >> 8) & 0xff; |
| 1980 | op[1] = disp; |
| 1981 | #endif |
| 1982 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; |
| 1983 | reloc_adjust = 0; |
| 1984 | break; |
| 1985 | |
| 1986 | case OPCODE (OT_bcc, 2): /* Bcond.B - 8 bit. */ |
| 1987 | op[1] = disp; |
| 1988 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; |
| 1989 | break; |
| 1990 | case OPCODE (OT_bcc, 5): /* Bcond.W - synthetic. */ |
| 1991 | op[0] ^= 1; /* Invert condition. */ |
| 1992 | op[1] = 5; /* Displacement. */ |
| 1993 | op[2] = 0x38; |
| 1994 | disp -= 2; |
| 1995 | #if RX_OPCODE_BIG_ENDIAN |
| 1996 | op[3] = (disp >> 8) & 0xff; |
| 1997 | op[4] = disp; |
| 1998 | #else |
| 1999 | op[4] = (disp >> 8) & 0xff; |
| 2000 | op[3] = disp; |
| 2001 | #endif |
| 2002 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; |
| 2003 | reloc_adjust = 2; |
| 2004 | break; |
| 2005 | case OPCODE (OT_bcc, 6): /* Bcond.S - synthetic. */ |
| 2006 | op[0] ^= 1; /* Invert condition. */ |
| 2007 | op[1] = 6; /* Displacement. */ |
| 2008 | op[2] = 0x04; |
| 2009 | disp -= 2; |
| 2010 | #if RX_OPCODE_BIG_ENDIAN |
| 2011 | op[3] = (disp >> 16) & 0xff; |
| 2012 | op[4] = (disp >> 8) & 0xff; |
| 2013 | op[5] = disp; |
| 2014 | #else |
| 2015 | op[5] = (disp >> 16) & 0xff; |
| 2016 | op[4] = (disp >> 8) & 0xff; |
| 2017 | op[3] = disp; |
| 2018 | #endif |
| 2019 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; |
| 2020 | reloc_adjust = 2; |
| 2021 | break; |
| 2022 | |
| 2023 | default: |
| 2024 | /* These are opcodes we'll relax in th linker, later. */ |
| 2025 | if (rxb->n_fixups) |
| 2026 | reloc_type = rxb->fixups[ri].fixP->fx_r_type; |
| 2027 | break; |
| 2028 | } |
| 2029 | break; |
| 2030 | |
| 2031 | case RX_RELAX_IMM: |
| 2032 | { |
| 2033 | int nbytes = fragP->fr_subtype - fragP->tc_frag_data->relax[ri].val_ofs; |
| 2034 | int li; |
| 2035 | char * imm = op + fragP->tc_frag_data->relax[ri].val_ofs; |
| 2036 | |
| 2037 | switch (nbytes) |
| 2038 | { |
| 2039 | case 1: |
| 2040 | li = 1; |
| 2041 | imm[0] = addr0; |
| 2042 | reloc_type = BFD_RELOC_8; |
| 2043 | break; |
| 2044 | case 2: |
| 2045 | li = 2; |
| 2046 | #if RX_OPCODE_BIG_ENDIAN |
| 2047 | imm[1] = addr0; |
| 2048 | imm[0] = addr0 >> 8; |
| 2049 | #else |
| 2050 | imm[0] = addr0; |
| 2051 | imm[1] = addr0 >> 8; |
| 2052 | #endif |
| 2053 | reloc_type = BFD_RELOC_RX_16_OP; |
| 2054 | break; |
| 2055 | case 3: |
| 2056 | li = 3; |
| 2057 | #if RX_OPCODE_BIG_ENDIAN |
| 2058 | imm[2] = addr0; |
| 2059 | imm[1] = addr0 >> 8; |
| 2060 | imm[0] = addr0 >> 16; |
| 2061 | #else |
| 2062 | imm[0] = addr0; |
| 2063 | imm[1] = addr0 >> 8; |
| 2064 | imm[2] = addr0 >> 16; |
| 2065 | #endif |
| 2066 | reloc_type = BFD_RELOC_RX_24_OP; |
| 2067 | break; |
| 2068 | case 4: |
| 2069 | li = 0; |
| 2070 | #if RX_OPCODE_BIG_ENDIAN |
| 2071 | imm[3] = addr0; |
| 2072 | imm[2] = addr0 >> 8; |
| 2073 | imm[1] = addr0 >> 16; |
| 2074 | imm[0] = addr0 >> 24; |
| 2075 | #else |
| 2076 | imm[0] = addr0; |
| 2077 | imm[1] = addr0 >> 8; |
| 2078 | imm[2] = addr0 >> 16; |
| 2079 | imm[3] = addr0 >> 24; |
| 2080 | #endif |
| 2081 | reloc_type = BFD_RELOC_RX_32_OP; |
| 2082 | break; |
| 2083 | default: |
| 2084 | as_bad (_("invalid immediate size")); |
| 2085 | li = -1; |
| 2086 | } |
| 2087 | |
| 2088 | switch (fragP->tc_frag_data->relax[ri].field_pos) |
| 2089 | { |
| 2090 | case 6: |
| 2091 | op[0] &= 0xfc; |
| 2092 | op[0] |= li; |
| 2093 | break; |
| 2094 | case 12: |
| 2095 | op[1] &= 0xf3; |
| 2096 | op[1] |= li << 2; |
| 2097 | break; |
| 2098 | case 20: |
| 2099 | op[2] &= 0xf3; |
| 2100 | op[2] |= li << 2; |
| 2101 | break; |
| 2102 | default: |
| 2103 | as_bad (_("invalid immediate field position")); |
| 2104 | } |
| 2105 | } |
| 2106 | break; |
| 2107 | |
| 2108 | default: |
| 2109 | if (rxb->n_fixups) |
| 2110 | { |
| 2111 | reloc_type = fix->fx_r_type; |
| 2112 | reloc_adjust = 0; |
| 2113 | } |
| 2114 | break; |
| 2115 | } |
| 2116 | |
| 2117 | if (rxb->n_fixups) |
| 2118 | { |
| 2119 | |
| 2120 | fix->fx_r_type = reloc_type; |
| 2121 | fix->fx_where += reloc_adjust; |
| 2122 | switch (reloc_type) |
| 2123 | { |
| 2124 | case BFD_RELOC_NONE: |
| 2125 | fix->fx_size = 0; |
| 2126 | break; |
| 2127 | case BFD_RELOC_8: |
| 2128 | fix->fx_size = 1; |
| 2129 | break; |
| 2130 | case BFD_RELOC_16_PCREL: |
| 2131 | case BFD_RELOC_RX_16_OP: |
| 2132 | fix->fx_size = 2; |
| 2133 | break; |
| 2134 | case BFD_RELOC_24_PCREL: |
| 2135 | case BFD_RELOC_RX_24_OP: |
| 2136 | fix->fx_size = 3; |
| 2137 | break; |
| 2138 | case BFD_RELOC_RX_32_OP: |
| 2139 | fix->fx_size = 4; |
| 2140 | break; |
| 2141 | default: |
| 2142 | break; |
| 2143 | } |
| 2144 | } |
| 2145 | |
| 2146 | fragP->fr_fix = fragP->fr_subtype + (fragP->fr_opcode - fragP->fr_literal); |
| 2147 | tprintf ("fragP->fr_fix now %ld (%d + (%p - %p)\n", (long) fragP->fr_fix, |
| 2148 | fragP->fr_subtype, fragP->fr_opcode, fragP->fr_literal); |
| 2149 | fragP->fr_var = 0; |
| 2150 | |
| 2151 | if (fragP->fr_next != NULL |
| 2152 | && ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address) |
| 2153 | != fragP->fr_fix)) |
| 2154 | as_bad (_("bad frag at %p : fix %ld addr %ld %ld \n"), fragP, |
| 2155 | (long) fragP->fr_fix, |
| 2156 | (long) fragP->fr_address, (long) fragP->fr_next->fr_address); |
| 2157 | } |
| 2158 | |
| 2159 | #undef OPCODE |
| 2160 | \f |
| 2161 | int |
| 2162 | rx_validate_fix_sub (struct fix * f) |
| 2163 | { |
| 2164 | /* We permit the subtraction of two symbols in a few cases. */ |
| 2165 | /* mov #sym1-sym2, R3 */ |
| 2166 | if (f->fx_r_type == BFD_RELOC_RX_32_OP) |
| 2167 | return 1; |
| 2168 | /* .long sym1-sym2 */ |
| 2169 | if (f->fx_r_type == BFD_RELOC_RX_DIFF |
| 2170 | && ! f->fx_pcrel |
| 2171 | && (f->fx_size == 4 || f->fx_size == 2 || f->fx_size == 1)) |
| 2172 | return 1; |
| 2173 | return 0; |
| 2174 | } |
| 2175 | |
| 2176 | long |
| 2177 | md_pcrel_from_section (fixS * fixP, segT sec) |
| 2178 | { |
| 2179 | long rv; |
| 2180 | |
| 2181 | if (fixP->fx_addsy != NULL |
| 2182 | && (! S_IS_DEFINED (fixP->fx_addsy) |
| 2183 | || S_GET_SEGMENT (fixP->fx_addsy) != sec)) |
| 2184 | /* The symbol is undefined (or is defined but not in this section). |
| 2185 | Let the linker figure it out. */ |
| 2186 | return 0; |
| 2187 | |
| 2188 | rv = fixP->fx_frag->fr_address + fixP->fx_where; |
| 2189 | switch (fixP->fx_r_type) |
| 2190 | { |
| 2191 | case BFD_RELOC_RX_DIR3U_PCREL: |
| 2192 | return rv; |
| 2193 | default: |
| 2194 | return rv - 1; |
| 2195 | } |
| 2196 | } |
| 2197 | |
| 2198 | void |
| 2199 | rx_cons_fix_new (fragS * frag, |
| 2200 | int where, |
| 2201 | int size, |
| 2202 | expressionS * exp, |
| 2203 | bfd_reloc_code_real_type type) |
| 2204 | { |
| 2205 | switch (size) |
| 2206 | { |
| 2207 | case 1: |
| 2208 | type = BFD_RELOC_8; |
| 2209 | break; |
| 2210 | case 2: |
| 2211 | type = BFD_RELOC_16; |
| 2212 | break; |
| 2213 | case 3: |
| 2214 | type = BFD_RELOC_24; |
| 2215 | break; |
| 2216 | case 4: |
| 2217 | type = BFD_RELOC_32; |
| 2218 | break; |
| 2219 | default: |
| 2220 | as_bad (_("unsupported constant size %d\n"), size); |
| 2221 | return; |
| 2222 | } |
| 2223 | |
| 2224 | if (exp->X_op == O_subtract && exp->X_op_symbol) |
| 2225 | { |
| 2226 | if (size != 4 && size != 2 && size != 1) |
| 2227 | as_bad (_("difference of two symbols only supported with .long, .short, or .byte")); |
| 2228 | else |
| 2229 | type = BFD_RELOC_RX_DIFF; |
| 2230 | } |
| 2231 | |
| 2232 | fix_new_exp (frag, where, (int) size, exp, 0, type); |
| 2233 | } |
| 2234 | |
| 2235 | void |
| 2236 | md_apply_fix (struct fix * f ATTRIBUTE_UNUSED, |
| 2237 | valueT * t ATTRIBUTE_UNUSED, |
| 2238 | segT s ATTRIBUTE_UNUSED) |
| 2239 | { |
| 2240 | /* Instruction bytes are always little endian. */ |
| 2241 | char * op; |
| 2242 | unsigned long val; |
| 2243 | |
| 2244 | if (f->fx_addsy && S_FORCE_RELOC (f->fx_addsy, 1)) |
| 2245 | return; |
| 2246 | if (f->fx_subsy && S_FORCE_RELOC (f->fx_subsy, 1)) |
| 2247 | return; |
| 2248 | |
| 2249 | #define OP2(x) op[target_big_endian ? 1-x : x] |
| 2250 | #define OP3(x) op[target_big_endian ? 2-x : x] |
| 2251 | #define OP4(x) op[target_big_endian ? 3-x : x] |
| 2252 | |
| 2253 | op = f->fx_frag->fr_literal + f->fx_where; |
| 2254 | val = (unsigned long) * t; |
| 2255 | |
| 2256 | /* Opcode words are always the same endian. Data words are either |
| 2257 | big or little endian. */ |
| 2258 | |
| 2259 | switch (f->fx_r_type) |
| 2260 | { |
| 2261 | case BFD_RELOC_NONE: |
| 2262 | break; |
| 2263 | |
| 2264 | case BFD_RELOC_RX_RELAX: |
| 2265 | f->fx_done = 1; |
| 2266 | break; |
| 2267 | |
| 2268 | case BFD_RELOC_RX_DIR3U_PCREL: |
| 2269 | if (val < 3 || val > 10) |
| 2270 | as_bad_where (f->fx_file, f->fx_line, |
| 2271 | _("jump not 3..10 bytes away (is %d)"), (int) val); |
| 2272 | op[0] &= 0xf8; |
| 2273 | op[0] |= val & 0x07; |
| 2274 | break; |
| 2275 | |
| 2276 | case BFD_RELOC_8: |
| 2277 | case BFD_RELOC_8_PCREL: |
| 2278 | case BFD_RELOC_RX_8U: |
| 2279 | op[0] = val; |
| 2280 | break; |
| 2281 | |
| 2282 | case BFD_RELOC_16: |
| 2283 | OP2(1) = val & 0xff; |
| 2284 | OP2(0) = (val >> 8) & 0xff; |
| 2285 | break; |
| 2286 | |
| 2287 | case BFD_RELOC_16_PCREL: |
| 2288 | case BFD_RELOC_RX_16_OP: |
| 2289 | case BFD_RELOC_RX_16U: |
| 2290 | #if RX_OPCODE_BIG_ENDIAN |
| 2291 | op[1] = val & 0xff; |
| 2292 | op[0] = (val >> 8) & 0xff; |
| 2293 | #else |
| 2294 | op[0] = val & 0xff; |
| 2295 | op[1] = (val >> 8) & 0xff; |
| 2296 | #endif |
| 2297 | break; |
| 2298 | |
| 2299 | case BFD_RELOC_24: |
| 2300 | OP3(0) = val & 0xff; |
| 2301 | OP3(1) = (val >> 8) & 0xff; |
| 2302 | OP3(2) = (val >> 16) & 0xff; |
| 2303 | break; |
| 2304 | |
| 2305 | case BFD_RELOC_24_PCREL: |
| 2306 | case BFD_RELOC_RX_24_OP: |
| 2307 | case BFD_RELOC_RX_24U: |
| 2308 | #if RX_OPCODE_BIG_ENDIAN |
| 2309 | op[2] = val & 0xff; |
| 2310 | op[1] = (val >> 8) & 0xff; |
| 2311 | op[0] = (val >> 16) & 0xff; |
| 2312 | #else |
| 2313 | op[0] = val & 0xff; |
| 2314 | op[1] = (val >> 8) & 0xff; |
| 2315 | op[2] = (val >> 16) & 0xff; |
| 2316 | #endif |
| 2317 | break; |
| 2318 | |
| 2319 | case BFD_RELOC_RX_DIFF: |
| 2320 | switch (f->fx_size) |
| 2321 | { |
| 2322 | case 1: |
| 2323 | op[0] = val & 0xff; |
| 2324 | break; |
| 2325 | case 2: |
| 2326 | OP2(0) = val & 0xff; |
| 2327 | OP2(1) = (val >> 8) & 0xff; |
| 2328 | break; |
| 2329 | case 4: |
| 2330 | OP4(0) = val & 0xff; |
| 2331 | OP4(1) = (val >> 8) & 0xff; |
| 2332 | OP4(2) = (val >> 16) & 0xff; |
| 2333 | OP4(3) = (val >> 24) & 0xff; |
| 2334 | break; |
| 2335 | } |
| 2336 | break; |
| 2337 | |
| 2338 | case BFD_RELOC_32: |
| 2339 | OP4(0) = val & 0xff; |
| 2340 | OP4(1) = (val >> 8) & 0xff; |
| 2341 | OP4(2) = (val >> 16) & 0xff; |
| 2342 | OP4(3) = (val >> 24) & 0xff; |
| 2343 | break; |
| 2344 | |
| 2345 | case BFD_RELOC_RX_32_OP: |
| 2346 | #if RX_OPCODE_BIG_ENDIAN |
| 2347 | op[3] = val & 0xff; |
| 2348 | op[2] = (val >> 8) & 0xff; |
| 2349 | op[1] = (val >> 16) & 0xff; |
| 2350 | op[0] = (val >> 24) & 0xff; |
| 2351 | #else |
| 2352 | op[0] = val & 0xff; |
| 2353 | op[1] = (val >> 8) & 0xff; |
| 2354 | op[2] = (val >> 16) & 0xff; |
| 2355 | op[3] = (val >> 24) & 0xff; |
| 2356 | #endif |
| 2357 | break; |
| 2358 | |
| 2359 | case BFD_RELOC_RX_NEG8: |
| 2360 | op[0] = - val; |
| 2361 | break; |
| 2362 | |
| 2363 | case BFD_RELOC_RX_NEG16: |
| 2364 | val = -val; |
| 2365 | #if RX_OPCODE_BIG_ENDIAN |
| 2366 | op[1] = val & 0xff; |
| 2367 | op[0] = (val >> 8) & 0xff; |
| 2368 | #else |
| 2369 | op[0] = val & 0xff; |
| 2370 | op[1] = (val >> 8) & 0xff; |
| 2371 | #endif |
| 2372 | break; |
| 2373 | |
| 2374 | case BFD_RELOC_RX_NEG24: |
| 2375 | val = -val; |
| 2376 | #if RX_OPCODE_BIG_ENDIAN |
| 2377 | op[2] = val & 0xff; |
| 2378 | op[1] = (val >> 8) & 0xff; |
| 2379 | op[0] = (val >> 16) & 0xff; |
| 2380 | #else |
| 2381 | op[0] = val & 0xff; |
| 2382 | op[1] = (val >> 8) & 0xff; |
| 2383 | op[2] = (val >> 16) & 0xff; |
| 2384 | #endif |
| 2385 | break; |
| 2386 | |
| 2387 | case BFD_RELOC_RX_NEG32: |
| 2388 | val = -val; |
| 2389 | #if RX_OPCODE_BIG_ENDIAN |
| 2390 | op[3] = val & 0xff; |
| 2391 | op[2] = (val >> 8) & 0xff; |
| 2392 | op[1] = (val >> 16) & 0xff; |
| 2393 | op[0] = (val >> 24) & 0xff; |
| 2394 | #else |
| 2395 | op[0] = val & 0xff; |
| 2396 | op[1] = (val >> 8) & 0xff; |
| 2397 | op[2] = (val >> 16) & 0xff; |
| 2398 | op[3] = (val >> 24) & 0xff; |
| 2399 | #endif |
| 2400 | break; |
| 2401 | |
| 2402 | case BFD_RELOC_RX_GPRELL: |
| 2403 | val >>= 1; |
| 2404 | /* Fall through. */ |
| 2405 | case BFD_RELOC_RX_GPRELW: |
| 2406 | val >>= 1; |
| 2407 | /* Fall through. */ |
| 2408 | case BFD_RELOC_RX_GPRELB: |
| 2409 | #if RX_OPCODE_BIG_ENDIAN |
| 2410 | op[1] = val & 0xff; |
| 2411 | op[0] = (val >> 8) & 0xff; |
| 2412 | #else |
| 2413 | op[0] = val & 0xff; |
| 2414 | op[1] = (val >> 8) & 0xff; |
| 2415 | #endif |
| 2416 | break; |
| 2417 | |
| 2418 | default: |
| 2419 | as_bad (_("Unknown reloc in md_apply_fix: %s"), |
| 2420 | bfd_get_reloc_code_name (f->fx_r_type)); |
| 2421 | break; |
| 2422 | } |
| 2423 | |
| 2424 | if (f->fx_addsy == NULL) |
| 2425 | f->fx_done = 1; |
| 2426 | } |
| 2427 | |
| 2428 | arelent ** |
| 2429 | tc_gen_reloc (asection * sec ATTRIBUTE_UNUSED, fixS * fixp) |
| 2430 | { |
| 2431 | static arelent * reloc[5]; |
| 2432 | bfd_boolean is_opcode = FALSE; |
| 2433 | |
| 2434 | if (fixp->fx_r_type == BFD_RELOC_NONE) |
| 2435 | { |
| 2436 | reloc[0] = NULL; |
| 2437 | return reloc; |
| 2438 | } |
| 2439 | |
| 2440 | if (fixp->fx_subsy |
| 2441 | && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) |
| 2442 | { |
| 2443 | fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy); |
| 2444 | fixp->fx_subsy = NULL; |
| 2445 | } |
| 2446 | |
| 2447 | reloc[0] = XNEW (arelent); |
| 2448 | reloc[0]->sym_ptr_ptr = XNEW (asymbol *); |
| 2449 | * reloc[0]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 2450 | reloc[0]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2451 | reloc[0]->addend = fixp->fx_offset; |
| 2452 | |
| 2453 | if (fixp->fx_r_type == BFD_RELOC_RX_32_OP |
| 2454 | && fixp->fx_subsy) |
| 2455 | { |
| 2456 | fixp->fx_r_type = BFD_RELOC_RX_DIFF; |
| 2457 | is_opcode = TRUE; |
| 2458 | } |
| 2459 | else if (sec) |
| 2460 | is_opcode = sec->flags & SEC_CODE; |
| 2461 | |
| 2462 | /* Certain BFD relocations cannot be translated directly into |
| 2463 | a single (non-Red Hat) RX relocation, but instead need |
| 2464 | multiple RX relocations - handle them here. */ |
| 2465 | switch (fixp->fx_r_type) |
| 2466 | { |
| 2467 | case BFD_RELOC_RX_DIFF: |
| 2468 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2469 | |
| 2470 | reloc[1] = XNEW (arelent); |
| 2471 | reloc[1]->sym_ptr_ptr = XNEW (asymbol *); |
| 2472 | * reloc[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); |
| 2473 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2474 | reloc[1]->addend = 0; |
| 2475 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2476 | |
| 2477 | reloc[2] = XNEW (arelent); |
| 2478 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); |
| 2479 | reloc[2]->addend = 0; |
| 2480 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; |
| 2481 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2482 | |
| 2483 | reloc[3] = XNEW (arelent); |
| 2484 | switch (fixp->fx_size) |
| 2485 | { |
| 2486 | case 1: |
| 2487 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS8); |
| 2488 | break; |
| 2489 | case 2: |
| 2490 | if (!is_opcode && target_big_endian) |
| 2491 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16_REV); |
| 2492 | else if (is_opcode) |
| 2493 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UL); |
| 2494 | else |
| 2495 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16); |
| 2496 | break; |
| 2497 | case 4: |
| 2498 | if (!is_opcode && target_big_endian) |
| 2499 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32_REV); |
| 2500 | else |
| 2501 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32); |
| 2502 | break; |
| 2503 | } |
| 2504 | reloc[3]->addend = 0; |
| 2505 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; |
| 2506 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2507 | |
| 2508 | reloc[4] = NULL; |
| 2509 | break; |
| 2510 | |
| 2511 | case BFD_RELOC_RX_GPRELL: |
| 2512 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2513 | |
| 2514 | reloc[1] = XNEW (arelent); |
| 2515 | reloc[1]->sym_ptr_ptr = XNEW (asymbol *); |
| 2516 | if (gp_symbol == NULL) |
| 2517 | { |
| 2518 | if (symbol_table_frozen) |
| 2519 | { |
| 2520 | symbolS * gp; |
| 2521 | |
| 2522 | gp = symbol_find ("__gp"); |
| 2523 | if (gp == NULL) |
| 2524 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); |
| 2525 | else |
| 2526 | gp_symbol = symbol_get_bfdsym (gp); |
| 2527 | } |
| 2528 | else |
| 2529 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); |
| 2530 | } |
| 2531 | * reloc[1]->sym_ptr_ptr = gp_symbol; |
| 2532 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2533 | reloc[1]->addend = 0; |
| 2534 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2535 | |
| 2536 | reloc[2] = XNEW (arelent); |
| 2537 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); |
| 2538 | reloc[2]->addend = 0; |
| 2539 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; |
| 2540 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2541 | |
| 2542 | reloc[3] = XNEW (arelent); |
| 2543 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UL); |
| 2544 | reloc[3]->addend = 0; |
| 2545 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; |
| 2546 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2547 | |
| 2548 | reloc[4] = NULL; |
| 2549 | break; |
| 2550 | |
| 2551 | case BFD_RELOC_RX_GPRELW: |
| 2552 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2553 | |
| 2554 | reloc[1] = XNEW (arelent); |
| 2555 | reloc[1]->sym_ptr_ptr = XNEW (asymbol *); |
| 2556 | if (gp_symbol == NULL) |
| 2557 | { |
| 2558 | if (symbol_table_frozen) |
| 2559 | { |
| 2560 | symbolS * gp; |
| 2561 | |
| 2562 | gp = symbol_find ("__gp"); |
| 2563 | if (gp == NULL) |
| 2564 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); |
| 2565 | else |
| 2566 | gp_symbol = symbol_get_bfdsym (gp); |
| 2567 | } |
| 2568 | else |
| 2569 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); |
| 2570 | } |
| 2571 | * reloc[1]->sym_ptr_ptr = gp_symbol; |
| 2572 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2573 | reloc[1]->addend = 0; |
| 2574 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2575 | |
| 2576 | reloc[2] = XNEW (arelent); |
| 2577 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); |
| 2578 | reloc[2]->addend = 0; |
| 2579 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; |
| 2580 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2581 | |
| 2582 | reloc[3] = XNEW (arelent); |
| 2583 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UW); |
| 2584 | reloc[3]->addend = 0; |
| 2585 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; |
| 2586 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2587 | |
| 2588 | reloc[4] = NULL; |
| 2589 | break; |
| 2590 | |
| 2591 | case BFD_RELOC_RX_GPRELB: |
| 2592 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2593 | |
| 2594 | reloc[1] = XNEW (arelent); |
| 2595 | reloc[1]->sym_ptr_ptr = XNEW (asymbol *); |
| 2596 | if (gp_symbol == NULL) |
| 2597 | { |
| 2598 | if (symbol_table_frozen) |
| 2599 | { |
| 2600 | symbolS * gp; |
| 2601 | |
| 2602 | gp = symbol_find ("__gp"); |
| 2603 | if (gp == NULL) |
| 2604 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); |
| 2605 | else |
| 2606 | gp_symbol = symbol_get_bfdsym (gp); |
| 2607 | } |
| 2608 | else |
| 2609 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); |
| 2610 | } |
| 2611 | * reloc[1]->sym_ptr_ptr = gp_symbol; |
| 2612 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2613 | reloc[1]->addend = 0; |
| 2614 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2615 | |
| 2616 | reloc[2] = XNEW (arelent); |
| 2617 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); |
| 2618 | reloc[2]->addend = 0; |
| 2619 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; |
| 2620 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2621 | |
| 2622 | reloc[3] = XNEW (arelent); |
| 2623 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16U); |
| 2624 | reloc[3]->addend = 0; |
| 2625 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; |
| 2626 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2627 | |
| 2628 | reloc[4] = NULL; |
| 2629 | break; |
| 2630 | |
| 2631 | case BFD_RELOC_RX_NEG32: |
| 2632 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); |
| 2633 | |
| 2634 | reloc[1] = XNEW (arelent); |
| 2635 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_NEG); |
| 2636 | reloc[1]->addend = 0; |
| 2637 | reloc[1]->sym_ptr_ptr = reloc[0]->sym_ptr_ptr; |
| 2638 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2639 | |
| 2640 | reloc[2] = XNEW (arelent); |
| 2641 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32); |
| 2642 | reloc[2]->addend = 0; |
| 2643 | reloc[2]->sym_ptr_ptr = reloc[0]->sym_ptr_ptr; |
| 2644 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2645 | |
| 2646 | reloc[3] = NULL; |
| 2647 | break; |
| 2648 | |
| 2649 | default: |
| 2650 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| 2651 | reloc[1] = NULL; |
| 2652 | break; |
| 2653 | } |
| 2654 | |
| 2655 | return reloc; |
| 2656 | } |
| 2657 | |
| 2658 | void |
| 2659 | rx_note_string_insn_use (void) |
| 2660 | { |
| 2661 | if ((elf_flags & E_FLAG_RX_SINSNS_MASK) == (E_FLAG_RX_SINSNS_SET | E_FLAG_RX_SINSNS_NO)) |
| 2662 | as_bad (_("Use of an RX string instruction detected in a file being assembled without string instruction support")); |
| 2663 | elf_flags |= E_FLAG_RX_SINSNS_SET | E_FLAG_RX_SINSNS_YES; |
| 2664 | } |
| 2665 | |
| 2666 | /* Set the ELF specific flags. */ |
| 2667 | |
| 2668 | void |
| 2669 | rx_elf_final_processing (void) |
| 2670 | { |
| 2671 | elf_elfheader (stdoutput)->e_flags |= elf_flags; |
| 2672 | } |
| 2673 | |
| 2674 | /* Scan the current input line for occurances of Renesas |
| 2675 | local labels and replace them with the GAS version. */ |
| 2676 | |
| 2677 | void |
| 2678 | rx_start_line (void) |
| 2679 | { |
| 2680 | int in_double_quote = 0; |
| 2681 | int in_single_quote = 0; |
| 2682 | int done = 0; |
| 2683 | char * p = input_line_pointer; |
| 2684 | |
| 2685 | /* Scan the line looking for question marks. Skip past quote enclosed regions. */ |
| 2686 | do |
| 2687 | { |
| 2688 | switch (*p) |
| 2689 | { |
| 2690 | case '\n': |
| 2691 | case 0: |
| 2692 | done = 1; |
| 2693 | break; |
| 2694 | |
| 2695 | case '"': |
| 2696 | in_double_quote = ! in_double_quote; |
| 2697 | break; |
| 2698 | |
| 2699 | case '\'': |
| 2700 | in_single_quote = ! in_single_quote; |
| 2701 | break; |
| 2702 | |
| 2703 | case '?': |
| 2704 | if (in_double_quote || in_single_quote) |
| 2705 | break; |
| 2706 | |
| 2707 | if (p[1] == ':') |
| 2708 | *p = '1'; |
| 2709 | else if (p[1] == '+') |
| 2710 | { |
| 2711 | p[0] = '1'; |
| 2712 | p[1] = 'f'; |
| 2713 | } |
| 2714 | else if (p[1] == '-') |
| 2715 | { |
| 2716 | p[0] = '1'; |
| 2717 | p[1] = 'b'; |
| 2718 | } |
| 2719 | break; |
| 2720 | |
| 2721 | default: |
| 2722 | break; |
| 2723 | } |
| 2724 | |
| 2725 | p ++; |
| 2726 | } |
| 2727 | while (! done); |
| 2728 | } |