| 1 | /* tc-s390.c -- Assemble for the S390 |
| 2 | Copyright (C) 2000-2018 Free Software Foundation, Inc. |
| 3 | Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
| 4 | |
| 5 | This file is part of GAS, the GNU Assembler. |
| 6 | |
| 7 | GAS is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GAS is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GAS; see the file COPYING. If not, write to the Free |
| 19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | 02110-1301, USA. */ |
| 21 | |
| 22 | #include "as.h" |
| 23 | #include "safe-ctype.h" |
| 24 | #include "subsegs.h" |
| 25 | #include "struc-symbol.h" |
| 26 | #include "dwarf2dbg.h" |
| 27 | #include "dw2gencfi.h" |
| 28 | |
| 29 | #include "opcode/s390.h" |
| 30 | #include "elf/s390.h" |
| 31 | |
| 32 | /* The default architecture. */ |
| 33 | #ifndef DEFAULT_ARCH |
| 34 | #define DEFAULT_ARCH "s390" |
| 35 | #endif |
| 36 | static const char *default_arch = DEFAULT_ARCH; |
| 37 | /* Either 32 or 64, selects file format. */ |
| 38 | static int s390_arch_size = 0; |
| 39 | |
| 40 | /* If no -march option was given default to the highest available CPU. |
| 41 | Since with S/390 a newer CPU always supports everything from its |
| 42 | predecessors this will accept every valid asm input. */ |
| 43 | static unsigned int current_cpu = S390_OPCODE_MAXCPU - 1; |
| 44 | /* All facilities are enabled by default. */ |
| 45 | static unsigned int current_flags = S390_INSTR_FLAG_FACILITY_MASK; |
| 46 | /* The mode mask default is picked in init_default_arch depending on |
| 47 | the current cpu. */ |
| 48 | static unsigned int current_mode_mask = 0; |
| 49 | |
| 50 | /* Set to TRUE if the highgprs flag in the ELF header needs to be set |
| 51 | for the output file. */ |
| 52 | static bfd_boolean set_highgprs_p = FALSE; |
| 53 | |
| 54 | /* Whether to use user friendly register names. Default is TRUE. */ |
| 55 | #ifndef TARGET_REG_NAMES_P |
| 56 | #define TARGET_REG_NAMES_P TRUE |
| 57 | #endif |
| 58 | |
| 59 | static bfd_boolean reg_names_p = TARGET_REG_NAMES_P; |
| 60 | |
| 61 | /* Set to TRUE if we want to warn about zero base/index registers. */ |
| 62 | static bfd_boolean warn_areg_zero = FALSE; |
| 63 | |
| 64 | /* Generic assembler global variables which must be defined by all |
| 65 | targets. */ |
| 66 | |
| 67 | const char comment_chars[] = "#"; |
| 68 | |
| 69 | /* Characters which start a comment at the beginning of a line. */ |
| 70 | const char line_comment_chars[] = "#"; |
| 71 | |
| 72 | /* Characters which may be used to separate multiple commands on a |
| 73 | single line. */ |
| 74 | const char line_separator_chars[] = ";"; |
| 75 | |
| 76 | /* Characters which are used to indicate an exponent in a floating |
| 77 | point number. */ |
| 78 | const char EXP_CHARS[] = "eE"; |
| 79 | |
| 80 | /* Characters which mean that a number is a floating point constant, |
| 81 | as in 0d1.0. */ |
| 82 | const char FLT_CHARS[] = "dD"; |
| 83 | |
| 84 | /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */ |
| 85 | int s390_cie_data_alignment; |
| 86 | |
| 87 | /* The target specific pseudo-ops which we support. */ |
| 88 | |
| 89 | /* Define the prototypes for the pseudo-ops */ |
| 90 | static void s390_byte (int); |
| 91 | static void s390_elf_cons (int); |
| 92 | static void s390_bss (int); |
| 93 | static void s390_insn (int); |
| 94 | static void s390_literals (int); |
| 95 | static void s390_machine (int); |
| 96 | static void s390_machinemode (int); |
| 97 | |
| 98 | const pseudo_typeS md_pseudo_table[] = |
| 99 | { |
| 100 | { "align", s_align_bytes, 0 }, |
| 101 | /* Pseudo-ops which must be defined. */ |
| 102 | { "bss", s390_bss, 0 }, |
| 103 | { "insn", s390_insn, 0 }, |
| 104 | /* Pseudo-ops which must be overridden. */ |
| 105 | { "byte", s390_byte, 0 }, |
| 106 | { "short", s390_elf_cons, 2 }, |
| 107 | { "long", s390_elf_cons, 4 }, |
| 108 | { "quad", s390_elf_cons, 8 }, |
| 109 | { "ltorg", s390_literals, 0 }, |
| 110 | { "string", stringer, 8 + 1 }, |
| 111 | { "machine", s390_machine, 0 }, |
| 112 | { "machinemode", s390_machinemode, 0 }, |
| 113 | { NULL, NULL, 0 } |
| 114 | }; |
| 115 | |
| 116 | /* Given NAME, find the register number associated with that name, return |
| 117 | the integer value associated with the given name or -1 on failure. */ |
| 118 | |
| 119 | static int |
| 120 | reg_name_search (const char *name) |
| 121 | { |
| 122 | int val = -1; |
| 123 | |
| 124 | if (strcasecmp (name, "lit") == 0) |
| 125 | return 13; |
| 126 | |
| 127 | if (strcasecmp (name, "sp") == 0) |
| 128 | return 15; |
| 129 | |
| 130 | if (name[0] != 'a' && name[0] != 'c' && name[0] != 'f' |
| 131 | && name[0] != 'r' && name[0] != 'v') |
| 132 | return -1; |
| 133 | |
| 134 | if (ISDIGIT (name[1])) |
| 135 | { |
| 136 | val = name[1] - '0'; |
| 137 | if (ISDIGIT (name[2])) |
| 138 | val = val * 10 + name[2] - '0'; |
| 139 | } |
| 140 | |
| 141 | if ((name[0] != 'v' && val > 15) || val > 31) |
| 142 | val = -1; |
| 143 | |
| 144 | return val; |
| 145 | } |
| 146 | |
| 147 | |
| 148 | /* |
| 149 | * Summary of register_name(). |
| 150 | * |
| 151 | * in: Input_line_pointer points to 1st char of operand. |
| 152 | * |
| 153 | * out: A expressionS. |
| 154 | * The operand may have been a register: in this case, X_op == O_register, |
| 155 | * X_add_number is set to the register number, and truth is returned. |
| 156 | * Input_line_pointer->(next non-blank) char after operand, or is in its |
| 157 | * original state. |
| 158 | */ |
| 159 | |
| 160 | static bfd_boolean |
| 161 | register_name (expressionS *expressionP) |
| 162 | { |
| 163 | int reg_number; |
| 164 | char *name; |
| 165 | char *start; |
| 166 | char c; |
| 167 | |
| 168 | /* Find the spelling of the operand. */ |
| 169 | start = name = input_line_pointer; |
| 170 | if (name[0] == '%' && ISALPHA (name[1])) |
| 171 | name = ++input_line_pointer; |
| 172 | else |
| 173 | return FALSE; |
| 174 | |
| 175 | c = get_symbol_name (&name); |
| 176 | reg_number = reg_name_search (name); |
| 177 | |
| 178 | /* Put back the delimiting char. */ |
| 179 | (void) restore_line_pointer (c); |
| 180 | |
| 181 | /* Look to see if it's in the register table. */ |
| 182 | if (reg_number >= 0) |
| 183 | { |
| 184 | expressionP->X_op = O_register; |
| 185 | expressionP->X_add_number = reg_number; |
| 186 | |
| 187 | /* Make the rest nice. */ |
| 188 | expressionP->X_add_symbol = NULL; |
| 189 | expressionP->X_op_symbol = NULL; |
| 190 | return TRUE; |
| 191 | } |
| 192 | |
| 193 | /* Reset the line as if we had not done anything. */ |
| 194 | input_line_pointer = start; |
| 195 | return FALSE; |
| 196 | } |
| 197 | |
| 198 | /* Local variables. */ |
| 199 | |
| 200 | /* Opformat hash table. */ |
| 201 | static struct hash_control *s390_opformat_hash; |
| 202 | |
| 203 | /* Opcode hash table. */ |
| 204 | static struct hash_control *s390_opcode_hash = NULL; |
| 205 | |
| 206 | /* Flags to set in the elf header */ |
| 207 | static flagword s390_flags = 0; |
| 208 | |
| 209 | symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */ |
| 210 | |
| 211 | #ifndef WORKING_DOT_WORD |
| 212 | int md_short_jump_size = 4; |
| 213 | int md_long_jump_size = 4; |
| 214 | #endif |
| 215 | |
| 216 | const char *md_shortopts = "A:m:kVQ:"; |
| 217 | struct option md_longopts[] = { |
| 218 | {NULL, no_argument, NULL, 0} |
| 219 | }; |
| 220 | size_t md_longopts_size = sizeof (md_longopts); |
| 221 | |
| 222 | /* Initialize the default opcode arch and word size from the default |
| 223 | architecture name if not specified by an option. */ |
| 224 | static void |
| 225 | init_default_arch (void) |
| 226 | { |
| 227 | if (strcmp (default_arch, "s390") == 0) |
| 228 | { |
| 229 | if (s390_arch_size == 0) |
| 230 | s390_arch_size = 32; |
| 231 | } |
| 232 | else if (strcmp (default_arch, "s390x") == 0) |
| 233 | { |
| 234 | if (s390_arch_size == 0) |
| 235 | s390_arch_size = 64; |
| 236 | } |
| 237 | else |
| 238 | as_fatal (_("Invalid default architecture, broken assembler.")); |
| 239 | |
| 240 | if (current_mode_mask == 0) |
| 241 | { |
| 242 | /* Default to z/Architecture mode if the CPU supports it. */ |
| 243 | if (current_cpu < S390_OPCODE_Z900) |
| 244 | current_mode_mask = 1 << S390_OPCODE_ESA; |
| 245 | else |
| 246 | current_mode_mask = 1 << S390_OPCODE_ZARCH; |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | /* Called by TARGET_FORMAT. */ |
| 251 | const char * |
| 252 | s390_target_format (void) |
| 253 | { |
| 254 | /* We don't get a chance to initialize anything before we're called, |
| 255 | so handle that now. */ |
| 256 | init_default_arch (); |
| 257 | |
| 258 | return s390_arch_size == 64 ? "elf64-s390" : "elf32-s390"; |
| 259 | } |
| 260 | |
| 261 | /* Map a cpu string ARG as given with -march= or .machine to the respective |
| 262 | enum s390_opcode_cpu_val value. If ALLOW_EXTENSIONS is TRUE, the cpu name |
| 263 | can be followed by a list of cpu facility flags each beginning with the |
| 264 | character '+'. The active cpu flags are returned through *RET_FLAGS. |
| 265 | In case of an error, S390_OPCODE_MAXCPU is returned. */ |
| 266 | |
| 267 | static unsigned int |
| 268 | s390_parse_cpu (const char * arg, |
| 269 | unsigned int * ret_flags, |
| 270 | bfd_boolean allow_extensions) |
| 271 | { |
| 272 | static struct |
| 273 | { |
| 274 | const char * name; |
| 275 | unsigned int name_len; |
| 276 | const char * alt_name; |
| 277 | unsigned int alt_name_len; |
| 278 | unsigned int flags; |
| 279 | } cpu_table[S390_OPCODE_MAXCPU] = |
| 280 | { |
| 281 | { STRING_COMMA_LEN ("g5"), STRING_COMMA_LEN ("arch3"), 0 }, |
| 282 | { STRING_COMMA_LEN ("g6"), STRING_COMMA_LEN (""), 0 }, |
| 283 | { STRING_COMMA_LEN ("z900"), STRING_COMMA_LEN ("arch5"), 0 }, |
| 284 | { STRING_COMMA_LEN ("z990"), STRING_COMMA_LEN ("arch6"), 0 }, |
| 285 | { STRING_COMMA_LEN ("z9-109"), STRING_COMMA_LEN (""), 0 }, |
| 286 | { STRING_COMMA_LEN ("z9-ec"), STRING_COMMA_LEN ("arch7"), 0 }, |
| 287 | { STRING_COMMA_LEN ("z10"), STRING_COMMA_LEN ("arch8"), 0 }, |
| 288 | { STRING_COMMA_LEN ("z196"), STRING_COMMA_LEN ("arch9"), 0 }, |
| 289 | { STRING_COMMA_LEN ("zEC12"), STRING_COMMA_LEN ("arch10"), |
| 290 | S390_INSTR_FLAG_HTM }, |
| 291 | { STRING_COMMA_LEN ("z13"), STRING_COMMA_LEN ("arch11"), |
| 292 | S390_INSTR_FLAG_HTM | S390_INSTR_FLAG_VX }, |
| 293 | { STRING_COMMA_LEN ("z14"), STRING_COMMA_LEN ("arch12"), |
| 294 | S390_INSTR_FLAG_HTM | S390_INSTR_FLAG_VX } |
| 295 | }; |
| 296 | static struct |
| 297 | { |
| 298 | const char * name; |
| 299 | unsigned int mask; |
| 300 | bfd_boolean on; |
| 301 | } cpu_flags[] = |
| 302 | { |
| 303 | { "htm", S390_INSTR_FLAG_HTM, TRUE }, |
| 304 | { "nohtm", S390_INSTR_FLAG_HTM, FALSE }, |
| 305 | { "vx", S390_INSTR_FLAG_VX, TRUE }, |
| 306 | { "novx", S390_INSTR_FLAG_VX, FALSE } |
| 307 | }; |
| 308 | unsigned int icpu; |
| 309 | char *ilp_bak; |
| 310 | |
| 311 | icpu = S390_OPCODE_MAXCPU; |
| 312 | if (strncmp (arg, "all", 3) == 0 && (arg[3] == 0 || arg[3] == '+')) |
| 313 | { |
| 314 | icpu = S390_OPCODE_MAXCPU - 1; |
| 315 | arg += 3; |
| 316 | } |
| 317 | else |
| 318 | { |
| 319 | for (icpu = 0; icpu < S390_OPCODE_MAXCPU; icpu++) |
| 320 | { |
| 321 | unsigned int l, l_alt; |
| 322 | |
| 323 | l = cpu_table[icpu].name_len; |
| 324 | |
| 325 | if (strncmp (arg, cpu_table[icpu].name, l) == 0 |
| 326 | && (arg[l] == 0 || arg[l] == '+')) |
| 327 | { |
| 328 | arg += l; |
| 329 | break; |
| 330 | } |
| 331 | |
| 332 | l_alt = cpu_table[icpu].alt_name_len; |
| 333 | |
| 334 | if (l_alt > 0 |
| 335 | && strncmp (arg, cpu_table[icpu].alt_name, l_alt) == 0 |
| 336 | && (arg[l_alt] == 0 || arg[l_alt] == '+')) |
| 337 | { |
| 338 | arg += l_alt; |
| 339 | break; |
| 340 | } |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | if (icpu == S390_OPCODE_MAXCPU) |
| 345 | return S390_OPCODE_MAXCPU; |
| 346 | |
| 347 | ilp_bak = input_line_pointer; |
| 348 | if (icpu != S390_OPCODE_MAXCPU) |
| 349 | { |
| 350 | input_line_pointer = (char *) arg; |
| 351 | *ret_flags = (cpu_table[icpu].flags & S390_INSTR_FLAG_FACILITY_MASK); |
| 352 | |
| 353 | while (*input_line_pointer == '+' && allow_extensions) |
| 354 | { |
| 355 | unsigned int iflag; |
| 356 | char *sym; |
| 357 | char c; |
| 358 | |
| 359 | input_line_pointer++; |
| 360 | c = get_symbol_name (&sym); |
| 361 | for (iflag = 0; iflag < ARRAY_SIZE (cpu_flags); iflag++) |
| 362 | { |
| 363 | if (strcmp (sym, cpu_flags[iflag].name) == 0) |
| 364 | { |
| 365 | if (cpu_flags[iflag].on) |
| 366 | *ret_flags |= cpu_flags[iflag].mask; |
| 367 | else |
| 368 | *ret_flags &= ~cpu_flags[iflag].mask; |
| 369 | break; |
| 370 | } |
| 371 | } |
| 372 | if (iflag == ARRAY_SIZE (cpu_flags)) |
| 373 | as_bad (_("no such machine extension `%s'"), sym - 1); |
| 374 | *input_line_pointer = c; |
| 375 | if (iflag == ARRAY_SIZE (cpu_flags)) |
| 376 | break; |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | SKIP_WHITESPACE (); |
| 381 | |
| 382 | if (*input_line_pointer != 0 && *input_line_pointer != '\n') |
| 383 | { |
| 384 | as_bad (_("junk at end of machine string, first unrecognized character" |
| 385 | " is `%c'"), *input_line_pointer); |
| 386 | icpu = S390_OPCODE_MAXCPU; |
| 387 | } |
| 388 | input_line_pointer = ilp_bak; |
| 389 | |
| 390 | return icpu; |
| 391 | } |
| 392 | |
| 393 | int |
| 394 | md_parse_option (int c, const char *arg) |
| 395 | { |
| 396 | switch (c) |
| 397 | { |
| 398 | /* -k: Ignore for FreeBSD compatibility. */ |
| 399 | case 'k': |
| 400 | break; |
| 401 | case 'm': |
| 402 | if (arg != NULL && strcmp (arg, "regnames") == 0) |
| 403 | reg_names_p = TRUE; |
| 404 | |
| 405 | else if (arg != NULL && strcmp (arg, "no-regnames") == 0) |
| 406 | reg_names_p = FALSE; |
| 407 | |
| 408 | else if (arg != NULL && strcmp (arg, "warn-areg-zero") == 0) |
| 409 | warn_areg_zero = TRUE; |
| 410 | |
| 411 | else if (arg != NULL && strcmp (arg, "31") == 0) |
| 412 | s390_arch_size = 32; |
| 413 | |
| 414 | else if (arg != NULL && strcmp (arg, "64") == 0) |
| 415 | s390_arch_size = 64; |
| 416 | |
| 417 | else if (arg != NULL && strcmp (arg, "esa") == 0) |
| 418 | current_mode_mask = 1 << S390_OPCODE_ESA; |
| 419 | |
| 420 | else if (arg != NULL && strcmp (arg, "zarch") == 0) |
| 421 | { |
| 422 | if (s390_arch_size == 32) |
| 423 | set_highgprs_p = TRUE; |
| 424 | current_mode_mask = 1 << S390_OPCODE_ZARCH; |
| 425 | } |
| 426 | |
| 427 | else if (arg != NULL && strncmp (arg, "arch=", 5) == 0) |
| 428 | { |
| 429 | current_cpu = s390_parse_cpu (arg + 5, ¤t_flags, FALSE); |
| 430 | if (current_cpu == S390_OPCODE_MAXCPU) |
| 431 | { |
| 432 | as_bad (_("invalid switch -m%s"), arg); |
| 433 | return 0; |
| 434 | } |
| 435 | } |
| 436 | |
| 437 | else |
| 438 | { |
| 439 | as_bad (_("invalid switch -m%s"), arg); |
| 440 | return 0; |
| 441 | } |
| 442 | break; |
| 443 | |
| 444 | case 'A': |
| 445 | /* Option -A is deprecated. Still available for compatibility. */ |
| 446 | if (arg != NULL && strcmp (arg, "esa") == 0) |
| 447 | current_cpu = S390_OPCODE_G5; |
| 448 | else if (arg != NULL && strcmp (arg, "esame") == 0) |
| 449 | current_cpu = S390_OPCODE_Z900; |
| 450 | else |
| 451 | as_bad (_("invalid architecture -A%s"), arg); |
| 452 | break; |
| 453 | |
| 454 | /* -V: SVR4 argument to print version ID. */ |
| 455 | case 'V': |
| 456 | print_version_id (); |
| 457 | break; |
| 458 | |
| 459 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section |
| 460 | should be emitted or not. FIXME: Not implemented. */ |
| 461 | case 'Q': |
| 462 | break; |
| 463 | |
| 464 | default: |
| 465 | return 0; |
| 466 | } |
| 467 | |
| 468 | return 1; |
| 469 | } |
| 470 | |
| 471 | void |
| 472 | md_show_usage (FILE *stream) |
| 473 | { |
| 474 | fprintf (stream, _("\ |
| 475 | S390 options:\n\ |
| 476 | -mregnames Allow symbolic names for registers\n\ |
| 477 | -mwarn-areg-zero Warn about zero base/index registers\n\ |
| 478 | -mno-regnames Do not allow symbolic names for registers\n\ |
| 479 | -m31 Set file format to 31 bit format\n\ |
| 480 | -m64 Set file format to 64 bit format\n")); |
| 481 | fprintf (stream, _("\ |
| 482 | -V print assembler version number\n\ |
| 483 | -Qy, -Qn ignored\n")); |
| 484 | } |
| 485 | |
| 486 | /* Generate the hash table mapping mnemonics to struct s390_opcode. |
| 487 | This table is built at startup and whenever the CPU level is |
| 488 | changed using .machine. */ |
| 489 | |
| 490 | static void |
| 491 | s390_setup_opcodes (void) |
| 492 | { |
| 493 | const struct s390_opcode *op; |
| 494 | const struct s390_opcode *op_end; |
| 495 | bfd_boolean dup_insn = FALSE; |
| 496 | const char *retval; |
| 497 | |
| 498 | if (s390_opcode_hash != NULL) |
| 499 | hash_die (s390_opcode_hash); |
| 500 | |
| 501 | /* Insert the opcodes into a hash table. */ |
| 502 | s390_opcode_hash = hash_new (); |
| 503 | |
| 504 | op_end = s390_opcodes + s390_num_opcodes; |
| 505 | for (op = s390_opcodes; op < op_end; op++) |
| 506 | { |
| 507 | int use_opcode; |
| 508 | |
| 509 | while (op < op_end - 1 && strcmp(op->name, op[1].name) == 0) |
| 510 | { |
| 511 | if (op->min_cpu <= current_cpu && (op->modes & current_mode_mask)) |
| 512 | break; |
| 513 | op++; |
| 514 | } |
| 515 | |
| 516 | if ((op->modes & current_mode_mask) == 0) |
| 517 | use_opcode = 0; |
| 518 | else if ((op->flags & S390_INSTR_FLAG_FACILITY_MASK) == 0) |
| 519 | { |
| 520 | /* Opcodes that do not belong to a specific facility are enabled if |
| 521 | present in the selected cpu. */ |
| 522 | use_opcode = (op->min_cpu <= current_cpu); |
| 523 | } |
| 524 | else |
| 525 | { |
| 526 | unsigned int f; |
| 527 | |
| 528 | /* Opcodes of a specific facility are enabled if the facility is |
| 529 | enabled. Note: only some facilities are represented as flags. */ |
| 530 | f = (op->flags & S390_INSTR_FLAG_FACILITY_MASK); |
| 531 | use_opcode = ((f & current_flags) == f); |
| 532 | } |
| 533 | if (use_opcode) |
| 534 | { |
| 535 | retval = hash_insert (s390_opcode_hash, op->name, (void *) op); |
| 536 | if (retval != (const char *) NULL) |
| 537 | { |
| 538 | as_bad (_("Internal assembler error for instruction %s"), |
| 539 | op->name); |
| 540 | dup_insn = TRUE; |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | while (op < op_end - 1 && strcmp (op->name, op[1].name) == 0) |
| 545 | op++; |
| 546 | } |
| 547 | |
| 548 | if (dup_insn) |
| 549 | abort (); |
| 550 | } |
| 551 | |
| 552 | /* This function is called when the assembler starts up. It is called |
| 553 | after the options have been parsed and the output file has been |
| 554 | opened. */ |
| 555 | |
| 556 | void |
| 557 | md_begin (void) |
| 558 | { |
| 559 | const struct s390_opcode *op; |
| 560 | const struct s390_opcode *op_end; |
| 561 | const char *retval; |
| 562 | |
| 563 | /* Give a warning if the combination -m64-bit and -Aesa is used. */ |
| 564 | if (s390_arch_size == 64 && current_cpu < S390_OPCODE_Z900) |
| 565 | as_warn (_("The 64 bit file format is used without esame instructions.")); |
| 566 | |
| 567 | s390_cie_data_alignment = -s390_arch_size / 8; |
| 568 | |
| 569 | /* Set the ELF flags if desired. */ |
| 570 | if (s390_flags) |
| 571 | bfd_set_private_flags (stdoutput, s390_flags); |
| 572 | |
| 573 | /* Insert the opcode formats into a hash table. */ |
| 574 | s390_opformat_hash = hash_new (); |
| 575 | |
| 576 | op_end = s390_opformats + s390_num_opformats; |
| 577 | for (op = s390_opformats; op < op_end; op++) |
| 578 | { |
| 579 | retval = hash_insert (s390_opformat_hash, op->name, (void *) op); |
| 580 | if (retval != (const char *) NULL) |
| 581 | as_bad (_("Internal assembler error for instruction format %s"), |
| 582 | op->name); |
| 583 | } |
| 584 | |
| 585 | s390_setup_opcodes (); |
| 586 | |
| 587 | record_alignment (text_section, 2); |
| 588 | record_alignment (data_section, 2); |
| 589 | record_alignment (bss_section, 2); |
| 590 | } |
| 591 | |
| 592 | /* Called after all assembly has been done. */ |
| 593 | void |
| 594 | s390_md_end (void) |
| 595 | { |
| 596 | if (s390_arch_size == 64) |
| 597 | bfd_set_arch_mach (stdoutput, bfd_arch_s390, bfd_mach_s390_64); |
| 598 | else |
| 599 | bfd_set_arch_mach (stdoutput, bfd_arch_s390, bfd_mach_s390_31); |
| 600 | } |
| 601 | |
| 602 | /* Insert an operand value into an instruction. */ |
| 603 | |
| 604 | static void |
| 605 | s390_insert_operand (unsigned char *insn, |
| 606 | const struct s390_operand *operand, |
| 607 | offsetT val, |
| 608 | const char *file, |
| 609 | unsigned int line) |
| 610 | { |
| 611 | addressT uval; |
| 612 | int offset; |
| 613 | |
| 614 | if (operand->flags & (S390_OPERAND_SIGNED|S390_OPERAND_PCREL)) |
| 615 | { |
| 616 | offsetT min, max; |
| 617 | |
| 618 | max = ((offsetT) 1 << (operand->bits - 1)) - 1; |
| 619 | min = - ((offsetT) 1 << (operand->bits - 1)); |
| 620 | /* Halve PCREL operands. */ |
| 621 | if (operand->flags & S390_OPERAND_PCREL) |
| 622 | val >>= 1; |
| 623 | /* Check for underflow / overflow. */ |
| 624 | if (val < min || val > max) |
| 625 | { |
| 626 | const char *err = |
| 627 | _("operand out of range (%s not between %ld and %ld)"); |
| 628 | char buf[100]; |
| 629 | |
| 630 | if (operand->flags & S390_OPERAND_PCREL) |
| 631 | { |
| 632 | val <<= 1; |
| 633 | min <<= 1; |
| 634 | max <<= 1; |
| 635 | } |
| 636 | sprint_value (buf, val); |
| 637 | if (file == (char *) NULL) |
| 638 | as_bad (err, buf, (int) min, (int) max); |
| 639 | else |
| 640 | as_bad_where (file, line, err, buf, (int) min, (int) max); |
| 641 | return; |
| 642 | } |
| 643 | /* val is ok, now restrict it to operand->bits bits. */ |
| 644 | uval = (addressT) val & ((((addressT) 1 << (operand->bits-1)) << 1) - 1); |
| 645 | /* val is restrict, now check for special case. */ |
| 646 | if (operand->bits == 20 && operand->shift == 20) |
| 647 | uval = (uval >> 12) | ((uval & 0xfff) << 8); |
| 648 | } |
| 649 | else |
| 650 | { |
| 651 | addressT min, max; |
| 652 | |
| 653 | max = (((addressT) 1 << (operand->bits - 1)) << 1) - 1; |
| 654 | min = (offsetT) 0; |
| 655 | uval = (addressT) val; |
| 656 | |
| 657 | /* Vector register operands have an additional bit in the RXB |
| 658 | field. */ |
| 659 | if (operand->flags & S390_OPERAND_VR) |
| 660 | max = (max << 1) | 1; |
| 661 | |
| 662 | /* Length x in an instructions has real length x+1. */ |
| 663 | if (operand->flags & S390_OPERAND_LENGTH) |
| 664 | uval--; |
| 665 | /* Check for underflow / overflow. */ |
| 666 | if (uval < min || uval > max) |
| 667 | { |
| 668 | if (operand->flags & S390_OPERAND_LENGTH) |
| 669 | { |
| 670 | uval++; |
| 671 | min++; |
| 672 | max++; |
| 673 | } |
| 674 | |
| 675 | as_bad_value_out_of_range (_("operand"), uval, (offsetT) min, (offsetT) max, file, line); |
| 676 | |
| 677 | return; |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | if (operand->flags & S390_OPERAND_VR) |
| 682 | { |
| 683 | /* Insert the extra bit into the RXB field. */ |
| 684 | switch (operand->shift) |
| 685 | { |
| 686 | case 8: |
| 687 | insn[4] |= (uval & 0x10) >> 1; |
| 688 | break; |
| 689 | case 12: |
| 690 | insn[4] |= (uval & 0x10) >> 2; |
| 691 | break; |
| 692 | case 16: |
| 693 | insn[4] |= (uval & 0x10) >> 3; |
| 694 | break; |
| 695 | case 32: |
| 696 | insn[4] |= (uval & 0x10) >> 4; |
| 697 | break; |
| 698 | } |
| 699 | uval &= 0xf; |
| 700 | } |
| 701 | |
| 702 | if (operand->flags & S390_OPERAND_OR1) |
| 703 | uval |= 1; |
| 704 | if (operand->flags & S390_OPERAND_OR2) |
| 705 | uval |= 2; |
| 706 | if (operand->flags & S390_OPERAND_OR8) |
| 707 | uval |= 8; |
| 708 | |
| 709 | /* Duplicate the operand at bit pos 12 to 16. */ |
| 710 | if (operand->flags & S390_OPERAND_CP16) |
| 711 | { |
| 712 | /* Copy VR operand at bit pos 12 to bit pos 16. */ |
| 713 | insn[2] |= uval << 4; |
| 714 | /* Copy the flag in the RXB field. */ |
| 715 | insn[4] |= (insn[4] & 4) >> 1; |
| 716 | } |
| 717 | |
| 718 | /* Insert fragments of the operand byte for byte. */ |
| 719 | offset = operand->shift + operand->bits; |
| 720 | uval <<= (-offset) & 7; |
| 721 | insn += (offset - 1) / 8; |
| 722 | while (uval != 0) |
| 723 | { |
| 724 | *insn-- |= uval; |
| 725 | uval >>= 8; |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | struct map_tls |
| 730 | { |
| 731 | const char *string; |
| 732 | int length; |
| 733 | bfd_reloc_code_real_type reloc; |
| 734 | }; |
| 735 | |
| 736 | /* Parse tls marker and return the desired relocation. */ |
| 737 | static bfd_reloc_code_real_type |
| 738 | s390_tls_suffix (char **str_p, expressionS *exp_p) |
| 739 | { |
| 740 | static struct map_tls mapping[] = |
| 741 | { |
| 742 | { "tls_load", 8, BFD_RELOC_390_TLS_LOAD }, |
| 743 | { "tls_gdcall", 10, BFD_RELOC_390_TLS_GDCALL }, |
| 744 | { "tls_ldcall", 10, BFD_RELOC_390_TLS_LDCALL }, |
| 745 | { NULL, 0, BFD_RELOC_UNUSED } |
| 746 | }; |
| 747 | struct map_tls *ptr; |
| 748 | char *orig_line; |
| 749 | char *str; |
| 750 | char *ident; |
| 751 | int len; |
| 752 | |
| 753 | str = *str_p; |
| 754 | if (*str++ != ':') |
| 755 | return BFD_RELOC_UNUSED; |
| 756 | |
| 757 | ident = str; |
| 758 | while (ISIDNUM (*str)) |
| 759 | str++; |
| 760 | len = str - ident; |
| 761 | if (*str++ != ':') |
| 762 | return BFD_RELOC_UNUSED; |
| 763 | |
| 764 | orig_line = input_line_pointer; |
| 765 | input_line_pointer = str; |
| 766 | expression (exp_p); |
| 767 | str = input_line_pointer; |
| 768 | if (&input_line_pointer != str_p) |
| 769 | input_line_pointer = orig_line; |
| 770 | |
| 771 | if (exp_p->X_op != O_symbol) |
| 772 | return BFD_RELOC_UNUSED; |
| 773 | |
| 774 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) |
| 775 | if (len == ptr->length |
| 776 | && strncasecmp (ident, ptr->string, ptr->length) == 0) |
| 777 | { |
| 778 | /* Found a matching tls suffix. */ |
| 779 | *str_p = str; |
| 780 | return ptr->reloc; |
| 781 | } |
| 782 | return BFD_RELOC_UNUSED; |
| 783 | } |
| 784 | |
| 785 | /* Structure used to hold suffixes. */ |
| 786 | typedef enum |
| 787 | { |
| 788 | ELF_SUFFIX_NONE = 0, |
| 789 | ELF_SUFFIX_GOT, |
| 790 | ELF_SUFFIX_PLT, |
| 791 | ELF_SUFFIX_GOTENT, |
| 792 | ELF_SUFFIX_GOTOFF, |
| 793 | ELF_SUFFIX_GOTPLT, |
| 794 | ELF_SUFFIX_PLTOFF, |
| 795 | ELF_SUFFIX_TLS_GD, |
| 796 | ELF_SUFFIX_TLS_GOTIE, |
| 797 | ELF_SUFFIX_TLS_IE, |
| 798 | ELF_SUFFIX_TLS_LDM, |
| 799 | ELF_SUFFIX_TLS_LDO, |
| 800 | ELF_SUFFIX_TLS_LE |
| 801 | } |
| 802 | elf_suffix_type; |
| 803 | |
| 804 | struct map_bfd |
| 805 | { |
| 806 | const char *string; |
| 807 | int length; |
| 808 | elf_suffix_type suffix; |
| 809 | }; |
| 810 | |
| 811 | |
| 812 | /* Parse @got/@plt/@gotoff. and return the desired relocation. */ |
| 813 | static elf_suffix_type |
| 814 | s390_elf_suffix (char **str_p, expressionS *exp_p) |
| 815 | { |
| 816 | static struct map_bfd mapping[] = |
| 817 | { |
| 818 | { "got", 3, ELF_SUFFIX_GOT }, |
| 819 | { "got12", 5, ELF_SUFFIX_GOT }, |
| 820 | { "plt", 3, ELF_SUFFIX_PLT }, |
| 821 | { "gotent", 6, ELF_SUFFIX_GOTENT }, |
| 822 | { "gotoff", 6, ELF_SUFFIX_GOTOFF }, |
| 823 | { "gotplt", 6, ELF_SUFFIX_GOTPLT }, |
| 824 | { "pltoff", 6, ELF_SUFFIX_PLTOFF }, |
| 825 | { "tlsgd", 5, ELF_SUFFIX_TLS_GD }, |
| 826 | { "gotntpoff", 9, ELF_SUFFIX_TLS_GOTIE }, |
| 827 | { "indntpoff", 9, ELF_SUFFIX_TLS_IE }, |
| 828 | { "tlsldm", 6, ELF_SUFFIX_TLS_LDM }, |
| 829 | { "dtpoff", 6, ELF_SUFFIX_TLS_LDO }, |
| 830 | { "ntpoff", 6, ELF_SUFFIX_TLS_LE }, |
| 831 | { NULL, 0, ELF_SUFFIX_NONE } |
| 832 | }; |
| 833 | |
| 834 | struct map_bfd *ptr; |
| 835 | char *str = *str_p; |
| 836 | char *ident; |
| 837 | int len; |
| 838 | |
| 839 | if (*str++ != '@') |
| 840 | return ELF_SUFFIX_NONE; |
| 841 | |
| 842 | ident = str; |
| 843 | while (ISALNUM (*str)) |
| 844 | str++; |
| 845 | len = str - ident; |
| 846 | |
| 847 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) |
| 848 | if (len == ptr->length |
| 849 | && strncasecmp (ident, ptr->string, ptr->length) == 0) |
| 850 | { |
| 851 | if (exp_p->X_add_number != 0) |
| 852 | as_warn (_("identifier+constant@%s means identifier@%s+constant"), |
| 853 | ptr->string, ptr->string); |
| 854 | /* Now check for identifier@suffix+constant. */ |
| 855 | if (*str == '-' || *str == '+') |
| 856 | { |
| 857 | char *orig_line = input_line_pointer; |
| 858 | expressionS new_exp; |
| 859 | |
| 860 | input_line_pointer = str; |
| 861 | expression (&new_exp); |
| 862 | |
| 863 | switch (new_exp.X_op) |
| 864 | { |
| 865 | case O_constant: /* X_add_number (a constant expression). */ |
| 866 | exp_p->X_add_number += new_exp.X_add_number; |
| 867 | str = input_line_pointer; |
| 868 | break; |
| 869 | case O_symbol: /* X_add_symbol + X_add_number. */ |
| 870 | /* this case is used for e.g. xyz@PLT+.Label. */ |
| 871 | exp_p->X_add_number += new_exp.X_add_number; |
| 872 | exp_p->X_op_symbol = new_exp.X_add_symbol; |
| 873 | exp_p->X_op = O_add; |
| 874 | str = input_line_pointer; |
| 875 | break; |
| 876 | case O_uminus: /* (- X_add_symbol) + X_add_number. */ |
| 877 | /* this case is used for e.g. xyz@PLT-.Label. */ |
| 878 | exp_p->X_add_number += new_exp.X_add_number; |
| 879 | exp_p->X_op_symbol = new_exp.X_add_symbol; |
| 880 | exp_p->X_op = O_subtract; |
| 881 | str = input_line_pointer; |
| 882 | break; |
| 883 | default: |
| 884 | break; |
| 885 | } |
| 886 | |
| 887 | /* If s390_elf_suffix has not been called with |
| 888 | &input_line_pointer as first parameter, we have |
| 889 | clobbered the input_line_pointer. We have to |
| 890 | undo that. */ |
| 891 | if (&input_line_pointer != str_p) |
| 892 | input_line_pointer = orig_line; |
| 893 | } |
| 894 | *str_p = str; |
| 895 | return ptr->suffix; |
| 896 | } |
| 897 | |
| 898 | return BFD_RELOC_UNUSED; |
| 899 | } |
| 900 | |
| 901 | /* Structure used to hold a literal pool entry. */ |
| 902 | struct s390_lpe |
| 903 | { |
| 904 | struct s390_lpe *next; |
| 905 | expressionS ex; |
| 906 | FLONUM_TYPE floatnum; /* used if X_op == O_big && X_add_number <= 0 */ |
| 907 | LITTLENUM_TYPE bignum[4]; /* used if X_op == O_big && X_add_number > 0 */ |
| 908 | int nbytes; |
| 909 | bfd_reloc_code_real_type reloc; |
| 910 | symbolS *sym; |
| 911 | }; |
| 912 | |
| 913 | static struct s390_lpe *lpe_free_list = NULL; |
| 914 | static struct s390_lpe *lpe_list = NULL; |
| 915 | static struct s390_lpe *lpe_list_tail = NULL; |
| 916 | static symbolS *lp_sym = NULL; |
| 917 | static int lp_count = 0; |
| 918 | static int lpe_count = 0; |
| 919 | |
| 920 | static int |
| 921 | s390_exp_compare (expressionS *exp1, expressionS *exp2) |
| 922 | { |
| 923 | if (exp1->X_op != exp2->X_op) |
| 924 | return 0; |
| 925 | |
| 926 | switch (exp1->X_op) |
| 927 | { |
| 928 | case O_constant: /* X_add_number must be equal. */ |
| 929 | case O_register: |
| 930 | return exp1->X_add_number == exp2->X_add_number; |
| 931 | |
| 932 | case O_big: |
| 933 | as_bad (_("Can't handle O_big in s390_exp_compare")); |
| 934 | return 0; |
| 935 | |
| 936 | case O_symbol: /* X_add_symbol & X_add_number must be equal. */ |
| 937 | case O_symbol_rva: |
| 938 | case O_uminus: |
| 939 | case O_bit_not: |
| 940 | case O_logical_not: |
| 941 | return (exp1->X_add_symbol == exp2->X_add_symbol) |
| 942 | && (exp1->X_add_number == exp2->X_add_number); |
| 943 | |
| 944 | case O_multiply: /* X_add_symbol,X_op_symbol&X_add_number must be equal. */ |
| 945 | case O_divide: |
| 946 | case O_modulus: |
| 947 | case O_left_shift: |
| 948 | case O_right_shift: |
| 949 | case O_bit_inclusive_or: |
| 950 | case O_bit_or_not: |
| 951 | case O_bit_exclusive_or: |
| 952 | case O_bit_and: |
| 953 | case O_add: |
| 954 | case O_subtract: |
| 955 | case O_eq: |
| 956 | case O_ne: |
| 957 | case O_lt: |
| 958 | case O_le: |
| 959 | case O_ge: |
| 960 | case O_gt: |
| 961 | case O_logical_and: |
| 962 | case O_logical_or: |
| 963 | return (exp1->X_add_symbol == exp2->X_add_symbol) |
| 964 | && (exp1->X_op_symbol == exp2->X_op_symbol) |
| 965 | && (exp1->X_add_number == exp2->X_add_number); |
| 966 | default: |
| 967 | return 0; |
| 968 | } |
| 969 | } |
| 970 | |
| 971 | /* Test for @lit and if it's present make an entry in the literal pool and |
| 972 | modify the current expression to be an offset into the literal pool. */ |
| 973 | static elf_suffix_type |
| 974 | s390_lit_suffix (char **str_p, expressionS *exp_p, elf_suffix_type suffix) |
| 975 | { |
| 976 | bfd_reloc_code_real_type reloc; |
| 977 | char tmp_name[64]; |
| 978 | char *str = *str_p; |
| 979 | char *ident; |
| 980 | struct s390_lpe *lpe; |
| 981 | int nbytes, len; |
| 982 | |
| 983 | if (*str++ != ':') |
| 984 | return suffix; /* No modification. */ |
| 985 | |
| 986 | /* We look for a suffix of the form "@lit1", "@lit2", "@lit4" or "@lit8". */ |
| 987 | ident = str; |
| 988 | while (ISALNUM (*str)) |
| 989 | str++; |
| 990 | len = str - ident; |
| 991 | if (len != 4 || strncasecmp (ident, "lit", 3) != 0 |
| 992 | || (ident[3]!='1' && ident[3]!='2' && ident[3]!='4' && ident[3]!='8')) |
| 993 | return suffix; /* no modification */ |
| 994 | nbytes = ident[3] - '0'; |
| 995 | |
| 996 | reloc = BFD_RELOC_UNUSED; |
| 997 | if (suffix == ELF_SUFFIX_GOT) |
| 998 | { |
| 999 | if (nbytes == 2) |
| 1000 | reloc = BFD_RELOC_390_GOT16; |
| 1001 | else if (nbytes == 4) |
| 1002 | reloc = BFD_RELOC_32_GOT_PCREL; |
| 1003 | else if (nbytes == 8) |
| 1004 | reloc = BFD_RELOC_390_GOT64; |
| 1005 | } |
| 1006 | else if (suffix == ELF_SUFFIX_PLT) |
| 1007 | { |
| 1008 | if (nbytes == 4) |
| 1009 | reloc = BFD_RELOC_390_PLT32; |
| 1010 | else if (nbytes == 8) |
| 1011 | reloc = BFD_RELOC_390_PLT64; |
| 1012 | } |
| 1013 | |
| 1014 | if (suffix != ELF_SUFFIX_NONE && reloc == BFD_RELOC_UNUSED) |
| 1015 | as_bad (_("Invalid suffix for literal pool entry")); |
| 1016 | |
| 1017 | /* Search the pool if the new entry is a duplicate. */ |
| 1018 | if (exp_p->X_op == O_big) |
| 1019 | { |
| 1020 | /* Special processing for big numbers. */ |
| 1021 | for (lpe = lpe_list; lpe != NULL; lpe = lpe->next) |
| 1022 | { |
| 1023 | if (lpe->ex.X_op == O_big) |
| 1024 | { |
| 1025 | if (exp_p->X_add_number <= 0 && lpe->ex.X_add_number <= 0) |
| 1026 | { |
| 1027 | if (memcmp (&generic_floating_point_number, &lpe->floatnum, |
| 1028 | sizeof (FLONUM_TYPE)) == 0) |
| 1029 | break; |
| 1030 | } |
| 1031 | else if (exp_p->X_add_number == lpe->ex.X_add_number) |
| 1032 | { |
| 1033 | if (memcmp (generic_bignum, lpe->bignum, |
| 1034 | sizeof (LITTLENUM_TYPE)*exp_p->X_add_number) == 0) |
| 1035 | break; |
| 1036 | } |
| 1037 | } |
| 1038 | } |
| 1039 | } |
| 1040 | else |
| 1041 | { |
| 1042 | /* Processing for 'normal' data types. */ |
| 1043 | for (lpe = lpe_list; lpe != NULL; lpe = lpe->next) |
| 1044 | if (lpe->nbytes == nbytes && lpe->reloc == reloc |
| 1045 | && s390_exp_compare (exp_p, &lpe->ex) != 0) |
| 1046 | break; |
| 1047 | } |
| 1048 | |
| 1049 | if (lpe == NULL) |
| 1050 | { |
| 1051 | /* A new literal. */ |
| 1052 | if (lpe_free_list != NULL) |
| 1053 | { |
| 1054 | lpe = lpe_free_list; |
| 1055 | lpe_free_list = lpe_free_list->next; |
| 1056 | } |
| 1057 | else |
| 1058 | { |
| 1059 | lpe = XNEW (struct s390_lpe); |
| 1060 | } |
| 1061 | |
| 1062 | lpe->ex = *exp_p; |
| 1063 | |
| 1064 | if (exp_p->X_op == O_big) |
| 1065 | { |
| 1066 | if (exp_p->X_add_number <= 0) |
| 1067 | lpe->floatnum = generic_floating_point_number; |
| 1068 | else if (exp_p->X_add_number <= 4) |
| 1069 | memcpy (lpe->bignum, generic_bignum, |
| 1070 | exp_p->X_add_number * sizeof (LITTLENUM_TYPE)); |
| 1071 | else |
| 1072 | as_bad (_("Big number is too big")); |
| 1073 | } |
| 1074 | |
| 1075 | lpe->nbytes = nbytes; |
| 1076 | lpe->reloc = reloc; |
| 1077 | /* Literal pool name defined ? */ |
| 1078 | if (lp_sym == NULL) |
| 1079 | { |
| 1080 | sprintf (tmp_name, ".L\001%i", lp_count); |
| 1081 | lp_sym = symbol_make (tmp_name); |
| 1082 | } |
| 1083 | |
| 1084 | /* Make name for literal pool entry. */ |
| 1085 | sprintf (tmp_name, ".L\001%i\002%i", lp_count, lpe_count); |
| 1086 | lpe_count++; |
| 1087 | lpe->sym = symbol_make (tmp_name); |
| 1088 | |
| 1089 | /* Add to literal pool list. */ |
| 1090 | lpe->next = NULL; |
| 1091 | if (lpe_list_tail != NULL) |
| 1092 | { |
| 1093 | lpe_list_tail->next = lpe; |
| 1094 | lpe_list_tail = lpe; |
| 1095 | } |
| 1096 | else |
| 1097 | lpe_list = lpe_list_tail = lpe; |
| 1098 | } |
| 1099 | |
| 1100 | /* Now change exp_p to the offset into the literal pool. |
| 1101 | That's the expression: .L^Ax^By-.L^Ax */ |
| 1102 | exp_p->X_add_symbol = lpe->sym; |
| 1103 | exp_p->X_op_symbol = lp_sym; |
| 1104 | exp_p->X_op = O_subtract; |
| 1105 | exp_p->X_add_number = 0; |
| 1106 | |
| 1107 | *str_p = str; |
| 1108 | |
| 1109 | /* We change the suffix type to ELF_SUFFIX_NONE, because |
| 1110 | the difference of two local labels is just a number. */ |
| 1111 | return ELF_SUFFIX_NONE; |
| 1112 | } |
| 1113 | |
| 1114 | /* Like normal .long/.short/.word, except support @got, etc. |
| 1115 | clobbers input_line_pointer, checks end-of-line. */ |
| 1116 | static void |
| 1117 | s390_elf_cons (int nbytes /* 1=.byte, 2=.word, 4=.long */) |
| 1118 | { |
| 1119 | expressionS exp; |
| 1120 | elf_suffix_type suffix; |
| 1121 | |
| 1122 | if (is_it_end_of_statement ()) |
| 1123 | { |
| 1124 | demand_empty_rest_of_line (); |
| 1125 | return; |
| 1126 | } |
| 1127 | |
| 1128 | do |
| 1129 | { |
| 1130 | expression (&exp); |
| 1131 | |
| 1132 | if (exp.X_op == O_symbol |
| 1133 | && *input_line_pointer == '@' |
| 1134 | && (suffix = s390_elf_suffix (&input_line_pointer, &exp)) != ELF_SUFFIX_NONE) |
| 1135 | { |
| 1136 | bfd_reloc_code_real_type reloc; |
| 1137 | reloc_howto_type *reloc_howto; |
| 1138 | int size; |
| 1139 | char *where; |
| 1140 | |
| 1141 | if (nbytes == 2) |
| 1142 | { |
| 1143 | static bfd_reloc_code_real_type tab2[] = |
| 1144 | { |
| 1145 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */ |
| 1146 | BFD_RELOC_390_GOT16, /* ELF_SUFFIX_GOT */ |
| 1147 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_PLT */ |
| 1148 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */ |
| 1149 | BFD_RELOC_16_GOTOFF, /* ELF_SUFFIX_GOTOFF */ |
| 1150 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTPLT */ |
| 1151 | BFD_RELOC_390_PLTOFF16, /* ELF_SUFFIX_PLTOFF */ |
| 1152 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_GD */ |
| 1153 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_GOTIE */ |
| 1154 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_IE */ |
| 1155 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_LDM */ |
| 1156 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_LDO */ |
| 1157 | BFD_RELOC_UNUSED /* ELF_SUFFIX_TLS_LE */ |
| 1158 | }; |
| 1159 | reloc = tab2[suffix]; |
| 1160 | } |
| 1161 | else if (nbytes == 4) |
| 1162 | { |
| 1163 | static bfd_reloc_code_real_type tab4[] = |
| 1164 | { |
| 1165 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */ |
| 1166 | BFD_RELOC_32_GOT_PCREL, /* ELF_SUFFIX_GOT */ |
| 1167 | BFD_RELOC_390_PLT32, /* ELF_SUFFIX_PLT */ |
| 1168 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */ |
| 1169 | BFD_RELOC_32_GOTOFF, /* ELF_SUFFIX_GOTOFF */ |
| 1170 | BFD_RELOC_390_GOTPLT32, /* ELF_SUFFIX_GOTPLT */ |
| 1171 | BFD_RELOC_390_PLTOFF32, /* ELF_SUFFIX_PLTOFF */ |
| 1172 | BFD_RELOC_390_TLS_GD32, /* ELF_SUFFIX_TLS_GD */ |
| 1173 | BFD_RELOC_390_TLS_GOTIE32, /* ELF_SUFFIX_TLS_GOTIE */ |
| 1174 | BFD_RELOC_390_TLS_IE32, /* ELF_SUFFIX_TLS_IE */ |
| 1175 | BFD_RELOC_390_TLS_LDM32, /* ELF_SUFFIX_TLS_LDM */ |
| 1176 | BFD_RELOC_390_TLS_LDO32, /* ELF_SUFFIX_TLS_LDO */ |
| 1177 | BFD_RELOC_390_TLS_LE32 /* ELF_SUFFIX_TLS_LE */ |
| 1178 | }; |
| 1179 | reloc = tab4[suffix]; |
| 1180 | } |
| 1181 | else if (nbytes == 8) |
| 1182 | { |
| 1183 | static bfd_reloc_code_real_type tab8[] = |
| 1184 | { |
| 1185 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */ |
| 1186 | BFD_RELOC_390_GOT64, /* ELF_SUFFIX_GOT */ |
| 1187 | BFD_RELOC_390_PLT64, /* ELF_SUFFIX_PLT */ |
| 1188 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */ |
| 1189 | BFD_RELOC_390_GOTOFF64, /* ELF_SUFFIX_GOTOFF */ |
| 1190 | BFD_RELOC_390_GOTPLT64, /* ELF_SUFFIX_GOTPLT */ |
| 1191 | BFD_RELOC_390_PLTOFF64, /* ELF_SUFFIX_PLTOFF */ |
| 1192 | BFD_RELOC_390_TLS_GD64, /* ELF_SUFFIX_TLS_GD */ |
| 1193 | BFD_RELOC_390_TLS_GOTIE64, /* ELF_SUFFIX_TLS_GOTIE */ |
| 1194 | BFD_RELOC_390_TLS_IE64, /* ELF_SUFFIX_TLS_IE */ |
| 1195 | BFD_RELOC_390_TLS_LDM64, /* ELF_SUFFIX_TLS_LDM */ |
| 1196 | BFD_RELOC_390_TLS_LDO64, /* ELF_SUFFIX_TLS_LDO */ |
| 1197 | BFD_RELOC_390_TLS_LE64 /* ELF_SUFFIX_TLS_LE */ |
| 1198 | }; |
| 1199 | reloc = tab8[suffix]; |
| 1200 | } |
| 1201 | else |
| 1202 | reloc = BFD_RELOC_UNUSED; |
| 1203 | |
| 1204 | if (reloc != BFD_RELOC_UNUSED |
| 1205 | && (reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc))) |
| 1206 | { |
| 1207 | size = bfd_get_reloc_size (reloc_howto); |
| 1208 | if (size > nbytes) |
| 1209 | as_bad (ngettext ("%s relocations do not fit in %d byte", |
| 1210 | "%s relocations do not fit in %d bytes", |
| 1211 | nbytes), |
| 1212 | reloc_howto->name, nbytes); |
| 1213 | where = frag_more (nbytes); |
| 1214 | md_number_to_chars (where, 0, size); |
| 1215 | /* To make fixup_segment do the pc relative conversion the |
| 1216 | pcrel parameter on the fix_new_exp call needs to be FALSE. */ |
| 1217 | fix_new_exp (frag_now, where - frag_now->fr_literal, |
| 1218 | size, &exp, FALSE, reloc); |
| 1219 | } |
| 1220 | else |
| 1221 | as_bad (_("relocation not applicable")); |
| 1222 | } |
| 1223 | else |
| 1224 | emit_expr (&exp, (unsigned int) nbytes); |
| 1225 | } |
| 1226 | while (*input_line_pointer++ == ','); |
| 1227 | |
| 1228 | input_line_pointer--; /* Put terminator back into stream. */ |
| 1229 | demand_empty_rest_of_line (); |
| 1230 | } |
| 1231 | |
| 1232 | /* We need to keep a list of fixups. We can't simply generate them as |
| 1233 | we go, because that would require us to first create the frag, and |
| 1234 | that would screw up references to ``.''. */ |
| 1235 | |
| 1236 | struct s390_fixup |
| 1237 | { |
| 1238 | expressionS exp; |
| 1239 | int opindex; |
| 1240 | bfd_reloc_code_real_type reloc; |
| 1241 | }; |
| 1242 | |
| 1243 | #define MAX_INSN_FIXUPS (4) |
| 1244 | |
| 1245 | /* This routine is called for each instruction to be assembled. */ |
| 1246 | |
| 1247 | static char * |
| 1248 | md_gather_operands (char *str, |
| 1249 | unsigned char *insn, |
| 1250 | const struct s390_opcode *opcode) |
| 1251 | { |
| 1252 | struct s390_fixup fixups[MAX_INSN_FIXUPS]; |
| 1253 | const struct s390_operand *operand; |
| 1254 | const unsigned char *opindex_ptr; |
| 1255 | expressionS ex; |
| 1256 | elf_suffix_type suffix; |
| 1257 | bfd_reloc_code_real_type reloc; |
| 1258 | int skip_optional; |
| 1259 | char *f; |
| 1260 | int fc, i; |
| 1261 | |
| 1262 | while (ISSPACE (*str)) |
| 1263 | str++; |
| 1264 | |
| 1265 | skip_optional = 0; |
| 1266 | |
| 1267 | /* Gather the operands. */ |
| 1268 | fc = 0; |
| 1269 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) |
| 1270 | { |
| 1271 | char *hold; |
| 1272 | |
| 1273 | operand = s390_operands + *opindex_ptr; |
| 1274 | |
| 1275 | if ((opcode->flags & (S390_INSTR_FLAG_OPTPARM | S390_INSTR_FLAG_OPTPARM2)) |
| 1276 | && *str == '\0') |
| 1277 | { |
| 1278 | /* Optional parameters might need to be ORed with a |
| 1279 | value so calling s390_insert_operand is needed. */ |
| 1280 | s390_insert_operand (insn, operand, 0, NULL, 0); |
| 1281 | break; |
| 1282 | } |
| 1283 | |
| 1284 | if (skip_optional && (operand->flags & S390_OPERAND_INDEX)) |
| 1285 | { |
| 1286 | /* We do an early skip. For D(X,B) constructions the index |
| 1287 | register is skipped (X is optional). For D(L,B) the base |
| 1288 | register will be the skipped operand, because L is NOT |
| 1289 | optional. */ |
| 1290 | skip_optional = 0; |
| 1291 | continue; |
| 1292 | } |
| 1293 | |
| 1294 | /* Gather the operand. */ |
| 1295 | hold = input_line_pointer; |
| 1296 | input_line_pointer = str; |
| 1297 | |
| 1298 | /* Parse the operand. */ |
| 1299 | if (! register_name (&ex)) |
| 1300 | expression (&ex); |
| 1301 | |
| 1302 | str = input_line_pointer; |
| 1303 | input_line_pointer = hold; |
| 1304 | |
| 1305 | /* Write the operand to the insn. */ |
| 1306 | if (ex.X_op == O_illegal) |
| 1307 | as_bad (_("illegal operand")); |
| 1308 | else if (ex.X_op == O_absent) |
| 1309 | { |
| 1310 | if (opindex_ptr[0] == '\0') |
| 1311 | break; |
| 1312 | as_bad (_("missing operand")); |
| 1313 | } |
| 1314 | else if (ex.X_op == O_register || ex.X_op == O_constant) |
| 1315 | { |
| 1316 | s390_lit_suffix (&str, &ex, ELF_SUFFIX_NONE); |
| 1317 | |
| 1318 | if (ex.X_op != O_register && ex.X_op != O_constant) |
| 1319 | { |
| 1320 | /* We need to generate a fixup for the |
| 1321 | expression returned by s390_lit_suffix. */ |
| 1322 | if (fc >= MAX_INSN_FIXUPS) |
| 1323 | as_fatal (_("too many fixups")); |
| 1324 | fixups[fc].exp = ex; |
| 1325 | fixups[fc].opindex = *opindex_ptr; |
| 1326 | fixups[fc].reloc = BFD_RELOC_UNUSED; |
| 1327 | ++fc; |
| 1328 | } |
| 1329 | else |
| 1330 | { |
| 1331 | if ((operand->flags & S390_OPERAND_LENGTH) |
| 1332 | && ex.X_op != O_constant) |
| 1333 | as_fatal (_("invalid length field specified")); |
| 1334 | if ((operand->flags & S390_OPERAND_INDEX) |
| 1335 | && ex.X_add_number == 0 |
| 1336 | && warn_areg_zero) |
| 1337 | as_warn (_("index register specified but zero")); |
| 1338 | if ((operand->flags & S390_OPERAND_BASE) |
| 1339 | && ex.X_add_number == 0 |
| 1340 | && warn_areg_zero) |
| 1341 | as_warn (_("base register specified but zero")); |
| 1342 | if ((operand->flags & S390_OPERAND_GPR) |
| 1343 | && (operand->flags & S390_OPERAND_REG_PAIR) |
| 1344 | && (ex.X_add_number & 1)) |
| 1345 | as_fatal (_("odd numbered general purpose register specified as " |
| 1346 | "register pair")); |
| 1347 | if ((operand->flags & S390_OPERAND_FPR) |
| 1348 | && (operand->flags & S390_OPERAND_REG_PAIR) |
| 1349 | && ex.X_add_number != 0 && ex.X_add_number != 1 |
| 1350 | && ex.X_add_number != 4 && ex.X_add_number != 5 |
| 1351 | && ex.X_add_number != 8 && ex.X_add_number != 9 |
| 1352 | && ex.X_add_number != 12 && ex.X_add_number != 13) |
| 1353 | as_fatal (_("invalid floating point register pair. Valid fp " |
| 1354 | "register pair operands are 0, 1, 4, 5, 8, 9, " |
| 1355 | "12 or 13.")); |
| 1356 | s390_insert_operand (insn, operand, ex.X_add_number, NULL, 0); |
| 1357 | } |
| 1358 | } |
| 1359 | else |
| 1360 | { |
| 1361 | suffix = s390_elf_suffix (&str, &ex); |
| 1362 | suffix = s390_lit_suffix (&str, &ex, suffix); |
| 1363 | reloc = BFD_RELOC_UNUSED; |
| 1364 | |
| 1365 | if (suffix == ELF_SUFFIX_GOT) |
| 1366 | { |
| 1367 | if ((operand->flags & S390_OPERAND_DISP) && |
| 1368 | (operand->bits == 12)) |
| 1369 | reloc = BFD_RELOC_390_GOT12; |
| 1370 | else if ((operand->flags & S390_OPERAND_DISP) && |
| 1371 | (operand->bits == 20)) |
| 1372 | reloc = BFD_RELOC_390_GOT20; |
| 1373 | else if ((operand->flags & S390_OPERAND_SIGNED) |
| 1374 | && (operand->bits == 16)) |
| 1375 | reloc = BFD_RELOC_390_GOT16; |
| 1376 | else if ((operand->flags & S390_OPERAND_PCREL) |
| 1377 | && (operand->bits == 32)) |
| 1378 | reloc = BFD_RELOC_390_GOTENT; |
| 1379 | } |
| 1380 | else if (suffix == ELF_SUFFIX_PLT) |
| 1381 | { |
| 1382 | if ((operand->flags & S390_OPERAND_PCREL) |
| 1383 | && (operand->bits == 12)) |
| 1384 | reloc = BFD_RELOC_390_PLT12DBL; |
| 1385 | else if ((operand->flags & S390_OPERAND_PCREL) |
| 1386 | && (operand->bits == 16)) |
| 1387 | reloc = BFD_RELOC_390_PLT16DBL; |
| 1388 | else if ((operand->flags & S390_OPERAND_PCREL) |
| 1389 | && (operand->bits == 24)) |
| 1390 | reloc = BFD_RELOC_390_PLT24DBL; |
| 1391 | else if ((operand->flags & S390_OPERAND_PCREL) |
| 1392 | && (operand->bits == 32)) |
| 1393 | reloc = BFD_RELOC_390_PLT32DBL; |
| 1394 | } |
| 1395 | else if (suffix == ELF_SUFFIX_GOTENT) |
| 1396 | { |
| 1397 | if ((operand->flags & S390_OPERAND_PCREL) |
| 1398 | && (operand->bits == 32)) |
| 1399 | reloc = BFD_RELOC_390_GOTENT; |
| 1400 | } |
| 1401 | else if (suffix == ELF_SUFFIX_GOTOFF) |
| 1402 | { |
| 1403 | if ((operand->flags & S390_OPERAND_SIGNED) |
| 1404 | && (operand->bits == 16)) |
| 1405 | reloc = BFD_RELOC_16_GOTOFF; |
| 1406 | } |
| 1407 | else if (suffix == ELF_SUFFIX_PLTOFF) |
| 1408 | { |
| 1409 | if ((operand->flags & S390_OPERAND_SIGNED) |
| 1410 | && (operand->bits == 16)) |
| 1411 | reloc = BFD_RELOC_390_PLTOFF16; |
| 1412 | } |
| 1413 | else if (suffix == ELF_SUFFIX_GOTPLT) |
| 1414 | { |
| 1415 | if ((operand->flags & S390_OPERAND_DISP) |
| 1416 | && (operand->bits == 12)) |
| 1417 | reloc = BFD_RELOC_390_GOTPLT12; |
| 1418 | else if ((operand->flags & S390_OPERAND_SIGNED) |
| 1419 | && (operand->bits == 16)) |
| 1420 | reloc = BFD_RELOC_390_GOTPLT16; |
| 1421 | else if ((operand->flags & S390_OPERAND_PCREL) |
| 1422 | && (operand->bits == 32)) |
| 1423 | reloc = BFD_RELOC_390_GOTPLTENT; |
| 1424 | } |
| 1425 | else if (suffix == ELF_SUFFIX_TLS_GOTIE) |
| 1426 | { |
| 1427 | if ((operand->flags & S390_OPERAND_DISP) |
| 1428 | && (operand->bits == 12)) |
| 1429 | reloc = BFD_RELOC_390_TLS_GOTIE12; |
| 1430 | else if ((operand->flags & S390_OPERAND_DISP) |
| 1431 | && (operand->bits == 20)) |
| 1432 | reloc = BFD_RELOC_390_TLS_GOTIE20; |
| 1433 | } |
| 1434 | else if (suffix == ELF_SUFFIX_TLS_IE) |
| 1435 | { |
| 1436 | if ((operand->flags & S390_OPERAND_PCREL) |
| 1437 | && (operand->bits == 32)) |
| 1438 | reloc = BFD_RELOC_390_TLS_IEENT; |
| 1439 | } |
| 1440 | |
| 1441 | if (suffix != ELF_SUFFIX_NONE && reloc == BFD_RELOC_UNUSED) |
| 1442 | as_bad (_("invalid operand suffix")); |
| 1443 | /* We need to generate a fixup of type 'reloc' for this |
| 1444 | expression. */ |
| 1445 | if (fc >= MAX_INSN_FIXUPS) |
| 1446 | as_fatal (_("too many fixups")); |
| 1447 | fixups[fc].exp = ex; |
| 1448 | fixups[fc].opindex = *opindex_ptr; |
| 1449 | fixups[fc].reloc = reloc; |
| 1450 | ++fc; |
| 1451 | } |
| 1452 | |
| 1453 | /* Check the next character. The call to expression has advanced |
| 1454 | str past any whitespace. */ |
| 1455 | if (operand->flags & S390_OPERAND_DISP) |
| 1456 | { |
| 1457 | /* After a displacement a block in parentheses can start. */ |
| 1458 | if (*str != '(') |
| 1459 | { |
| 1460 | /* Check if parenthesized block can be skipped. If the next |
| 1461 | operand is neither an optional operand nor a base register |
| 1462 | then we have a syntax error. */ |
| 1463 | operand = s390_operands + *(++opindex_ptr); |
| 1464 | if (!(operand->flags & (S390_OPERAND_INDEX|S390_OPERAND_BASE))) |
| 1465 | as_bad (_("syntax error; missing '(' after displacement")); |
| 1466 | |
| 1467 | /* Ok, skip all operands until S390_OPERAND_BASE. */ |
| 1468 | while (!(operand->flags & S390_OPERAND_BASE)) |
| 1469 | operand = s390_operands + *(++opindex_ptr); |
| 1470 | |
| 1471 | /* If there is a next operand it must be separated by a comma. */ |
| 1472 | if (opindex_ptr[1] != '\0') |
| 1473 | { |
| 1474 | if (*str != ',') |
| 1475 | { |
| 1476 | while (opindex_ptr[1] != '\0') |
| 1477 | { |
| 1478 | operand = s390_operands + *(++opindex_ptr); |
| 1479 | as_bad (_("syntax error; expected ','")); |
| 1480 | break; |
| 1481 | } |
| 1482 | } |
| 1483 | else |
| 1484 | str++; |
| 1485 | } |
| 1486 | } |
| 1487 | else |
| 1488 | { |
| 1489 | /* We found an opening parentheses. */ |
| 1490 | str++; |
| 1491 | for (f = str; *f != '\0'; f++) |
| 1492 | if (*f == ',' || *f == ')') |
| 1493 | break; |
| 1494 | /* If there is no comma until the closing parentheses OR |
| 1495 | there is a comma right after the opening parentheses, |
| 1496 | we have to skip optional operands. */ |
| 1497 | if (*f == ',' && f == str) |
| 1498 | { |
| 1499 | /* comma directly after '(' ? */ |
| 1500 | skip_optional = 1; |
| 1501 | str++; |
| 1502 | } |
| 1503 | else |
| 1504 | skip_optional = (*f != ','); |
| 1505 | } |
| 1506 | } |
| 1507 | else if (operand->flags & S390_OPERAND_BASE) |
| 1508 | { |
| 1509 | /* After the base register the parenthesised block ends. */ |
| 1510 | if (*str++ != ')') |
| 1511 | as_bad (_("syntax error; missing ')' after base register")); |
| 1512 | skip_optional = 0; |
| 1513 | /* If there is a next operand it must be separated by a comma. */ |
| 1514 | if (opindex_ptr[1] != '\0') |
| 1515 | { |
| 1516 | if (*str != ',') |
| 1517 | { |
| 1518 | while (opindex_ptr[1] != '\0') |
| 1519 | { |
| 1520 | operand = s390_operands + *(++opindex_ptr); |
| 1521 | as_bad (_("syntax error; expected ','")); |
| 1522 | break; |
| 1523 | } |
| 1524 | } |
| 1525 | else |
| 1526 | str++; |
| 1527 | } |
| 1528 | } |
| 1529 | else |
| 1530 | { |
| 1531 | /* We can find an 'early' closing parentheses in e.g. D(L) instead |
| 1532 | of D(L,B). In this case the base register has to be skipped. */ |
| 1533 | if (*str == ')') |
| 1534 | { |
| 1535 | operand = s390_operands + *(++opindex_ptr); |
| 1536 | |
| 1537 | if (!(operand->flags & S390_OPERAND_BASE)) |
| 1538 | as_bad (_("syntax error; ')' not allowed here")); |
| 1539 | str++; |
| 1540 | } |
| 1541 | |
| 1542 | if ((opcode->flags & (S390_INSTR_FLAG_OPTPARM |
| 1543 | | S390_INSTR_FLAG_OPTPARM2)) |
| 1544 | && opindex_ptr[1] != '\0' |
| 1545 | && opindex_ptr[2] == '\0' |
| 1546 | && *str == '\0') |
| 1547 | continue; |
| 1548 | |
| 1549 | if ((opcode->flags & S390_INSTR_FLAG_OPTPARM2) |
| 1550 | && opindex_ptr[1] != '\0' |
| 1551 | && opindex_ptr[2] != '\0' |
| 1552 | && opindex_ptr[3] == '\0' |
| 1553 | && *str == '\0') |
| 1554 | continue; |
| 1555 | |
| 1556 | /* If there is a next operand it must be separated by a comma. */ |
| 1557 | if (opindex_ptr[1] != '\0') |
| 1558 | { |
| 1559 | if (*str != ',') |
| 1560 | { |
| 1561 | while (opindex_ptr[1] != '\0') |
| 1562 | { |
| 1563 | operand = s390_operands + *(++opindex_ptr); |
| 1564 | as_bad (_("syntax error; expected ','")); |
| 1565 | break; |
| 1566 | } |
| 1567 | } |
| 1568 | else |
| 1569 | str++; |
| 1570 | } |
| 1571 | } |
| 1572 | } |
| 1573 | |
| 1574 | while (ISSPACE (*str)) |
| 1575 | ++str; |
| 1576 | |
| 1577 | /* Check for tls instruction marker. */ |
| 1578 | reloc = s390_tls_suffix (&str, &ex); |
| 1579 | if (reloc != BFD_RELOC_UNUSED) |
| 1580 | { |
| 1581 | /* We need to generate a fixup of type 'reloc' for this |
| 1582 | instruction. */ |
| 1583 | if (fc >= MAX_INSN_FIXUPS) |
| 1584 | as_fatal (_("too many fixups")); |
| 1585 | fixups[fc].exp = ex; |
| 1586 | fixups[fc].opindex = -1; |
| 1587 | fixups[fc].reloc = reloc; |
| 1588 | ++fc; |
| 1589 | } |
| 1590 | |
| 1591 | if (*str != '\0') |
| 1592 | { |
| 1593 | char *linefeed; |
| 1594 | |
| 1595 | if ((linefeed = strchr (str, '\n')) != NULL) |
| 1596 | *linefeed = '\0'; |
| 1597 | as_bad (_("junk at end of line: `%s'"), str); |
| 1598 | if (linefeed != NULL) |
| 1599 | *linefeed = '\n'; |
| 1600 | } |
| 1601 | |
| 1602 | /* Write out the instruction. */ |
| 1603 | f = frag_more (opcode->oplen); |
| 1604 | memcpy (f, insn, opcode->oplen); |
| 1605 | dwarf2_emit_insn (opcode->oplen); |
| 1606 | |
| 1607 | /* Create any fixups. At this point we do not use a |
| 1608 | bfd_reloc_code_real_type, but instead just use the |
| 1609 | BFD_RELOC_UNUSED plus the operand index. This lets us easily |
| 1610 | handle fixups for any operand type, although that is admittedly |
| 1611 | not a very exciting feature. We pick a BFD reloc type in |
| 1612 | md_apply_fix. */ |
| 1613 | for (i = 0; i < fc; i++) |
| 1614 | { |
| 1615 | |
| 1616 | if (fixups[i].opindex < 0) |
| 1617 | { |
| 1618 | /* Create tls instruction marker relocation. */ |
| 1619 | fix_new_exp (frag_now, f - frag_now->fr_literal, opcode->oplen, |
| 1620 | &fixups[i].exp, 0, fixups[i].reloc); |
| 1621 | continue; |
| 1622 | } |
| 1623 | |
| 1624 | operand = s390_operands + fixups[i].opindex; |
| 1625 | |
| 1626 | if (fixups[i].reloc != BFD_RELOC_UNUSED) |
| 1627 | { |
| 1628 | reloc_howto_type *reloc_howto; |
| 1629 | fixS *fixP; |
| 1630 | int size; |
| 1631 | |
| 1632 | reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); |
| 1633 | if (!reloc_howto) |
| 1634 | abort (); |
| 1635 | |
| 1636 | size = ((reloc_howto->bitsize - 1) / 8) + 1; |
| 1637 | |
| 1638 | if (size < 1 || size > 4) |
| 1639 | abort (); |
| 1640 | |
| 1641 | fixP = fix_new_exp (frag_now, |
| 1642 | f - frag_now->fr_literal + (operand->shift/8), |
| 1643 | size, &fixups[i].exp, reloc_howto->pc_relative, |
| 1644 | fixups[i].reloc); |
| 1645 | /* Turn off overflow checking in fixup_segment. This is necessary |
| 1646 | because fixup_segment will signal an overflow for large 4 byte |
| 1647 | quantities for GOT12 relocations. */ |
| 1648 | if ( fixups[i].reloc == BFD_RELOC_390_GOT12 |
| 1649 | || fixups[i].reloc == BFD_RELOC_390_GOT20 |
| 1650 | || fixups[i].reloc == BFD_RELOC_390_GOT16) |
| 1651 | fixP->fx_no_overflow = 1; |
| 1652 | |
| 1653 | if (operand->flags & S390_OPERAND_PCREL) |
| 1654 | fixP->fx_pcrel_adjust = operand->shift / 8; |
| 1655 | } |
| 1656 | else |
| 1657 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, &fixups[i].exp, |
| 1658 | (operand->flags & S390_OPERAND_PCREL) != 0, |
| 1659 | ((bfd_reloc_code_real_type) |
| 1660 | (fixups[i].opindex + (int) BFD_RELOC_UNUSED))); |
| 1661 | } |
| 1662 | return str; |
| 1663 | } |
| 1664 | |
| 1665 | /* This routine is called for each instruction to be assembled. */ |
| 1666 | |
| 1667 | void |
| 1668 | md_assemble (char *str) |
| 1669 | { |
| 1670 | const struct s390_opcode *opcode; |
| 1671 | unsigned char insn[6]; |
| 1672 | char *s; |
| 1673 | |
| 1674 | /* Get the opcode. */ |
| 1675 | for (s = str; *s != '\0' && ! ISSPACE (*s); s++) |
| 1676 | ; |
| 1677 | if (*s != '\0') |
| 1678 | *s++ = '\0'; |
| 1679 | |
| 1680 | /* Look up the opcode in the hash table. */ |
| 1681 | opcode = (struct s390_opcode *) hash_find (s390_opcode_hash, str); |
| 1682 | if (opcode == (const struct s390_opcode *) NULL) |
| 1683 | { |
| 1684 | as_bad (_("Unrecognized opcode: `%s'"), str); |
| 1685 | return; |
| 1686 | } |
| 1687 | else if (!(opcode->modes & current_mode_mask)) |
| 1688 | { |
| 1689 | as_bad (_("Opcode %s not available in this mode"), str); |
| 1690 | return; |
| 1691 | } |
| 1692 | memcpy (insn, opcode->opcode, sizeof (insn)); |
| 1693 | md_gather_operands (s, insn, opcode); |
| 1694 | } |
| 1695 | |
| 1696 | #ifndef WORKING_DOT_WORD |
| 1697 | /* Handle long and short jumps. We don't support these */ |
| 1698 | void |
| 1699 | md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) |
| 1700 | char *ptr; |
| 1701 | addressT from_addr, to_addr; |
| 1702 | fragS *frag; |
| 1703 | symbolS *to_symbol; |
| 1704 | { |
| 1705 | abort (); |
| 1706 | } |
| 1707 | |
| 1708 | void |
| 1709 | md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) |
| 1710 | char *ptr; |
| 1711 | addressT from_addr, to_addr; |
| 1712 | fragS *frag; |
| 1713 | symbolS *to_symbol; |
| 1714 | { |
| 1715 | abort (); |
| 1716 | } |
| 1717 | #endif |
| 1718 | |
| 1719 | void |
| 1720 | s390_bss (int ignore ATTRIBUTE_UNUSED) |
| 1721 | { |
| 1722 | /* We don't support putting frags in the BSS segment, we fake it |
| 1723 | by marking in_bss, then looking at s_skip for clues. */ |
| 1724 | |
| 1725 | subseg_set (bss_section, 0); |
| 1726 | demand_empty_rest_of_line (); |
| 1727 | } |
| 1728 | |
| 1729 | /* Pseudo-op handling. */ |
| 1730 | |
| 1731 | void |
| 1732 | s390_insn (int ignore ATTRIBUTE_UNUSED) |
| 1733 | { |
| 1734 | expressionS exp; |
| 1735 | const struct s390_opcode *opformat; |
| 1736 | unsigned char insn[6]; |
| 1737 | char *s; |
| 1738 | |
| 1739 | /* Get the opcode format. */ |
| 1740 | s = input_line_pointer; |
| 1741 | while (*s != '\0' && *s != ',' && ! ISSPACE (*s)) |
| 1742 | s++; |
| 1743 | if (*s != ',') |
| 1744 | as_bad (_("Invalid .insn format\n")); |
| 1745 | *s++ = '\0'; |
| 1746 | |
| 1747 | /* Look up the opcode in the hash table. */ |
| 1748 | opformat = (struct s390_opcode *) |
| 1749 | hash_find (s390_opformat_hash, input_line_pointer); |
| 1750 | if (opformat == (const struct s390_opcode *) NULL) |
| 1751 | { |
| 1752 | as_bad (_("Unrecognized opcode format: `%s'"), input_line_pointer); |
| 1753 | return; |
| 1754 | } |
| 1755 | input_line_pointer = s; |
| 1756 | expression (&exp); |
| 1757 | if (exp.X_op == O_constant) |
| 1758 | { |
| 1759 | if ( ( opformat->oplen == 6 |
| 1760 | && (addressT) exp.X_add_number < (1ULL << 48)) |
| 1761 | || ( opformat->oplen == 4 |
| 1762 | && (addressT) exp.X_add_number < (1ULL << 32)) |
| 1763 | || ( opformat->oplen == 2 |
| 1764 | && (addressT) exp.X_add_number < (1ULL << 16))) |
| 1765 | md_number_to_chars ((char *) insn, exp.X_add_number, opformat->oplen); |
| 1766 | else |
| 1767 | as_bad (_("Invalid .insn format\n")); |
| 1768 | } |
| 1769 | else if (exp.X_op == O_big) |
| 1770 | { |
| 1771 | if (exp.X_add_number > 0 |
| 1772 | && opformat->oplen == 6 |
| 1773 | && generic_bignum[3] == 0) |
| 1774 | { |
| 1775 | md_number_to_chars ((char *) insn, generic_bignum[2], 2); |
| 1776 | md_number_to_chars ((char *) &insn[2], generic_bignum[1], 2); |
| 1777 | md_number_to_chars ((char *) &insn[4], generic_bignum[0], 2); |
| 1778 | } |
| 1779 | else |
| 1780 | as_bad (_("Invalid .insn format\n")); |
| 1781 | } |
| 1782 | else |
| 1783 | as_bad (_("second operand of .insn not a constant\n")); |
| 1784 | |
| 1785 | if (strcmp (opformat->name, "e") != 0 && *input_line_pointer++ != ',') |
| 1786 | as_bad (_("missing comma after insn constant\n")); |
| 1787 | |
| 1788 | if ((s = strchr (input_line_pointer, '\n')) != NULL) |
| 1789 | *s = '\0'; |
| 1790 | input_line_pointer = md_gather_operands (input_line_pointer, insn, |
| 1791 | opformat); |
| 1792 | if (s != NULL) |
| 1793 | *s = '\n'; |
| 1794 | demand_empty_rest_of_line (); |
| 1795 | } |
| 1796 | |
| 1797 | /* The .byte pseudo-op. This is similar to the normal .byte |
| 1798 | pseudo-op, but it can also take a single ASCII string. */ |
| 1799 | |
| 1800 | static void |
| 1801 | s390_byte (int ignore ATTRIBUTE_UNUSED) |
| 1802 | { |
| 1803 | if (*input_line_pointer != '\"') |
| 1804 | { |
| 1805 | cons (1); |
| 1806 | return; |
| 1807 | } |
| 1808 | |
| 1809 | /* Gather characters. A real double quote is doubled. Unusual |
| 1810 | characters are not permitted. */ |
| 1811 | ++input_line_pointer; |
| 1812 | while (1) |
| 1813 | { |
| 1814 | char c; |
| 1815 | |
| 1816 | c = *input_line_pointer++; |
| 1817 | |
| 1818 | if (c == '\"') |
| 1819 | { |
| 1820 | if (*input_line_pointer != '\"') |
| 1821 | break; |
| 1822 | ++input_line_pointer; |
| 1823 | } |
| 1824 | |
| 1825 | FRAG_APPEND_1_CHAR (c); |
| 1826 | } |
| 1827 | |
| 1828 | demand_empty_rest_of_line (); |
| 1829 | } |
| 1830 | |
| 1831 | /* The .ltorg pseudo-op.This emits all literals defined since the last |
| 1832 | .ltorg or the invocation of gas. Literals are defined with the |
| 1833 | @lit suffix. */ |
| 1834 | |
| 1835 | static void |
| 1836 | s390_literals (int ignore ATTRIBUTE_UNUSED) |
| 1837 | { |
| 1838 | struct s390_lpe *lpe; |
| 1839 | |
| 1840 | if (lp_sym == NULL || lpe_count == 0) |
| 1841 | return; /* Nothing to be done. */ |
| 1842 | |
| 1843 | /* Emit symbol for start of literal pool. */ |
| 1844 | S_SET_SEGMENT (lp_sym, now_seg); |
| 1845 | S_SET_VALUE (lp_sym, (valueT) frag_now_fix ()); |
| 1846 | lp_sym->sy_frag = frag_now; |
| 1847 | |
| 1848 | while (lpe_list) |
| 1849 | { |
| 1850 | lpe = lpe_list; |
| 1851 | lpe_list = lpe_list->next; |
| 1852 | S_SET_SEGMENT (lpe->sym, now_seg); |
| 1853 | S_SET_VALUE (lpe->sym, (valueT) frag_now_fix ()); |
| 1854 | lpe->sym->sy_frag = frag_now; |
| 1855 | |
| 1856 | /* Emit literal pool entry. */ |
| 1857 | if (lpe->reloc != BFD_RELOC_UNUSED) |
| 1858 | { |
| 1859 | reloc_howto_type *reloc_howto = |
| 1860 | bfd_reloc_type_lookup (stdoutput, lpe->reloc); |
| 1861 | int size = bfd_get_reloc_size (reloc_howto); |
| 1862 | char *where; |
| 1863 | |
| 1864 | if (size > lpe->nbytes) |
| 1865 | as_bad (ngettext ("%s relocations do not fit in %d byte", |
| 1866 | "%s relocations do not fit in %d bytes", |
| 1867 | lpe->nbytes), |
| 1868 | reloc_howto->name, lpe->nbytes); |
| 1869 | where = frag_more (lpe->nbytes); |
| 1870 | md_number_to_chars (where, 0, size); |
| 1871 | fix_new_exp (frag_now, where - frag_now->fr_literal, |
| 1872 | size, &lpe->ex, reloc_howto->pc_relative, lpe->reloc); |
| 1873 | } |
| 1874 | else |
| 1875 | { |
| 1876 | if (lpe->ex.X_op == O_big) |
| 1877 | { |
| 1878 | if (lpe->ex.X_add_number <= 0) |
| 1879 | generic_floating_point_number = lpe->floatnum; |
| 1880 | else |
| 1881 | memcpy (generic_bignum, lpe->bignum, |
| 1882 | lpe->ex.X_add_number * sizeof (LITTLENUM_TYPE)); |
| 1883 | } |
| 1884 | emit_expr (&lpe->ex, lpe->nbytes); |
| 1885 | } |
| 1886 | |
| 1887 | lpe->next = lpe_free_list; |
| 1888 | lpe_free_list = lpe; |
| 1889 | } |
| 1890 | lpe_list_tail = NULL; |
| 1891 | lp_sym = NULL; |
| 1892 | lp_count++; |
| 1893 | lpe_count = 0; |
| 1894 | } |
| 1895 | |
| 1896 | #define MAX_HISTORY 100 |
| 1897 | |
| 1898 | /* The .machine pseudo op allows to switch to a different CPU level in |
| 1899 | the asm listing. The current CPU setting can be stored on a stack |
| 1900 | with .machine push and restored with .machine pop. */ |
| 1901 | |
| 1902 | static void |
| 1903 | s390_machine (int ignore ATTRIBUTE_UNUSED) |
| 1904 | { |
| 1905 | char *cpu_string; |
| 1906 | static struct cpu_history |
| 1907 | { |
| 1908 | unsigned int cpu; |
| 1909 | unsigned int flags; |
| 1910 | } *cpu_history; |
| 1911 | static int curr_hist; |
| 1912 | |
| 1913 | SKIP_WHITESPACE (); |
| 1914 | |
| 1915 | if (*input_line_pointer == '"') |
| 1916 | { |
| 1917 | int len; |
| 1918 | cpu_string = demand_copy_C_string (&len); |
| 1919 | } |
| 1920 | else |
| 1921 | { |
| 1922 | char c; |
| 1923 | |
| 1924 | cpu_string = input_line_pointer; |
| 1925 | do |
| 1926 | { |
| 1927 | char * str; |
| 1928 | |
| 1929 | c = get_symbol_name (&str); |
| 1930 | c = restore_line_pointer (c); |
| 1931 | if (c == '+') |
| 1932 | ++ input_line_pointer; |
| 1933 | } |
| 1934 | while (c == '+'); |
| 1935 | |
| 1936 | c = *input_line_pointer; |
| 1937 | *input_line_pointer = 0; |
| 1938 | cpu_string = xstrdup (cpu_string); |
| 1939 | (void) restore_line_pointer (c); |
| 1940 | } |
| 1941 | |
| 1942 | if (cpu_string != NULL) |
| 1943 | { |
| 1944 | unsigned int new_cpu = current_cpu; |
| 1945 | unsigned int new_flags = current_flags; |
| 1946 | |
| 1947 | if (strcmp (cpu_string, "push") == 0) |
| 1948 | { |
| 1949 | if (cpu_history == NULL) |
| 1950 | cpu_history = XNEWVEC (struct cpu_history, MAX_HISTORY); |
| 1951 | |
| 1952 | if (curr_hist >= MAX_HISTORY) |
| 1953 | as_bad (_(".machine stack overflow")); |
| 1954 | else |
| 1955 | { |
| 1956 | cpu_history[curr_hist].cpu = current_cpu; |
| 1957 | cpu_history[curr_hist].flags = current_flags; |
| 1958 | curr_hist++; |
| 1959 | } |
| 1960 | } |
| 1961 | else if (strcmp (cpu_string, "pop") == 0) |
| 1962 | { |
| 1963 | if (curr_hist <= 0) |
| 1964 | as_bad (_(".machine stack underflow")); |
| 1965 | else |
| 1966 | { |
| 1967 | curr_hist--; |
| 1968 | new_cpu = cpu_history[curr_hist].cpu; |
| 1969 | new_flags = cpu_history[curr_hist].flags; |
| 1970 | } |
| 1971 | } |
| 1972 | else |
| 1973 | new_cpu = s390_parse_cpu (cpu_string, &new_flags, TRUE); |
| 1974 | |
| 1975 | if (new_cpu == S390_OPCODE_MAXCPU) |
| 1976 | as_bad (_("invalid machine `%s'"), cpu_string); |
| 1977 | |
| 1978 | if (new_cpu != current_cpu || new_flags != current_flags) |
| 1979 | { |
| 1980 | current_cpu = new_cpu; |
| 1981 | current_flags = new_flags; |
| 1982 | s390_setup_opcodes (); |
| 1983 | } |
| 1984 | } |
| 1985 | |
| 1986 | demand_empty_rest_of_line (); |
| 1987 | } |
| 1988 | |
| 1989 | /* The .machinemode pseudo op allows to switch to a different |
| 1990 | architecture mode in the asm listing. The current architecture |
| 1991 | mode setting can be stored on a stack with .machinemode push and |
| 1992 | restored with .machinemode pop. */ |
| 1993 | |
| 1994 | static void |
| 1995 | s390_machinemode (int ignore ATTRIBUTE_UNUSED) |
| 1996 | { |
| 1997 | char *mode_string; |
| 1998 | static unsigned int *mode_history; |
| 1999 | static int curr_hist; |
| 2000 | |
| 2001 | SKIP_WHITESPACE (); |
| 2002 | |
| 2003 | { |
| 2004 | char c; |
| 2005 | |
| 2006 | c = get_symbol_name (&mode_string); |
| 2007 | mode_string = xstrdup (mode_string); |
| 2008 | (void) restore_line_pointer (c); |
| 2009 | } |
| 2010 | |
| 2011 | if (mode_string != NULL) |
| 2012 | { |
| 2013 | unsigned int old_mode_mask = current_mode_mask; |
| 2014 | char *p; |
| 2015 | |
| 2016 | for (p = mode_string; *p != 0; p++) |
| 2017 | *p = TOLOWER (*p); |
| 2018 | |
| 2019 | if (strcmp (mode_string, "push") == 0) |
| 2020 | { |
| 2021 | if (mode_history == NULL) |
| 2022 | mode_history = XNEWVEC (unsigned int, MAX_HISTORY); |
| 2023 | |
| 2024 | if (curr_hist >= MAX_HISTORY) |
| 2025 | as_bad (_(".machinemode stack overflow")); |
| 2026 | else |
| 2027 | mode_history[curr_hist++] = current_mode_mask; |
| 2028 | } |
| 2029 | else if (strcmp (mode_string, "pop") == 0) |
| 2030 | { |
| 2031 | if (curr_hist <= 0) |
| 2032 | as_bad (_(".machinemode stack underflow")); |
| 2033 | else |
| 2034 | current_mode_mask = mode_history[--curr_hist]; |
| 2035 | } |
| 2036 | else |
| 2037 | { |
| 2038 | if (strcmp (mode_string, "esa") == 0) |
| 2039 | current_mode_mask = 1 << S390_OPCODE_ESA; |
| 2040 | else if (strcmp (mode_string, "zarch") == 0) |
| 2041 | { |
| 2042 | if (s390_arch_size == 32) |
| 2043 | set_highgprs_p = TRUE; |
| 2044 | current_mode_mask = 1 << S390_OPCODE_ZARCH; |
| 2045 | } |
| 2046 | else if (strcmp (mode_string, "zarch_nohighgprs") == 0) |
| 2047 | current_mode_mask = 1 << S390_OPCODE_ZARCH; |
| 2048 | else |
| 2049 | as_bad (_("invalid machine mode `%s'"), mode_string); |
| 2050 | } |
| 2051 | |
| 2052 | if (current_mode_mask != old_mode_mask) |
| 2053 | s390_setup_opcodes (); |
| 2054 | } |
| 2055 | |
| 2056 | demand_empty_rest_of_line (); |
| 2057 | } |
| 2058 | |
| 2059 | #undef MAX_HISTORY |
| 2060 | |
| 2061 | const char * |
| 2062 | md_atof (int type, char *litp, int *sizep) |
| 2063 | { |
| 2064 | return ieee_md_atof (type, litp, sizep, TRUE); |
| 2065 | } |
| 2066 | |
| 2067 | /* Align a section (I don't know why this is machine dependent). */ |
| 2068 | |
| 2069 | valueT |
| 2070 | md_section_align (asection *seg, valueT addr) |
| 2071 | { |
| 2072 | int align = bfd_get_section_alignment (stdoutput, seg); |
| 2073 | |
| 2074 | return ((addr + (1 << align) - 1) & -(1 << align)); |
| 2075 | } |
| 2076 | |
| 2077 | /* We don't have any form of relaxing. */ |
| 2078 | |
| 2079 | int |
| 2080 | md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED, |
| 2081 | asection *seg ATTRIBUTE_UNUSED) |
| 2082 | { |
| 2083 | abort (); |
| 2084 | return 0; |
| 2085 | } |
| 2086 | |
| 2087 | /* Convert a machine dependent frag. We never generate these. */ |
| 2088 | |
| 2089 | void |
| 2090 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, |
| 2091 | asection *sec ATTRIBUTE_UNUSED, |
| 2092 | fragS *fragp ATTRIBUTE_UNUSED) |
| 2093 | { |
| 2094 | abort (); |
| 2095 | } |
| 2096 | |
| 2097 | symbolS * |
| 2098 | md_undefined_symbol (char *name) |
| 2099 | { |
| 2100 | if (*name == '_' && *(name + 1) == 'G' |
| 2101 | && strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 2102 | { |
| 2103 | if (!GOT_symbol) |
| 2104 | { |
| 2105 | if (symbol_find (name)) |
| 2106 | as_bad (_("GOT already in symbol table")); |
| 2107 | GOT_symbol = symbol_new (name, undefined_section, |
| 2108 | (valueT) 0, &zero_address_frag); |
| 2109 | } |
| 2110 | return GOT_symbol; |
| 2111 | } |
| 2112 | return 0; |
| 2113 | } |
| 2114 | |
| 2115 | /* Functions concerning relocs. */ |
| 2116 | |
| 2117 | /* The location from which a PC relative jump should be calculated, |
| 2118 | given a PC relative reloc. */ |
| 2119 | |
| 2120 | long |
| 2121 | md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED) |
| 2122 | { |
| 2123 | return fixp->fx_frag->fr_address + fixp->fx_where; |
| 2124 | } |
| 2125 | |
| 2126 | /* Here we decide which fixups can be adjusted to make them relative to |
| 2127 | the beginning of the section instead of the symbol. Basically we need |
| 2128 | to make sure that the dynamic relocations are done correctly, so in |
| 2129 | some cases we force the original symbol to be used. */ |
| 2130 | int |
| 2131 | tc_s390_fix_adjustable (fixS *fixP) |
| 2132 | { |
| 2133 | /* Don't adjust pc-relative references to merge sections. */ |
| 2134 | if (fixP->fx_pcrel |
| 2135 | && (S_GET_SEGMENT (fixP->fx_addsy)->flags & SEC_MERGE) != 0) |
| 2136 | return 0; |
| 2137 | |
| 2138 | /* adjust_reloc_syms doesn't know about the GOT. */ |
| 2139 | if ( fixP->fx_r_type == BFD_RELOC_16_GOTOFF |
| 2140 | || fixP->fx_r_type == BFD_RELOC_32_GOTOFF |
| 2141 | || fixP->fx_r_type == BFD_RELOC_390_GOTOFF64 |
| 2142 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF16 |
| 2143 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF32 |
| 2144 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF64 |
| 2145 | || fixP->fx_r_type == BFD_RELOC_390_PLT12DBL |
| 2146 | || fixP->fx_r_type == BFD_RELOC_390_PLT16DBL |
| 2147 | || fixP->fx_r_type == BFD_RELOC_390_PLT24DBL |
| 2148 | || fixP->fx_r_type == BFD_RELOC_390_PLT32 |
| 2149 | || fixP->fx_r_type == BFD_RELOC_390_PLT32DBL |
| 2150 | || fixP->fx_r_type == BFD_RELOC_390_PLT64 |
| 2151 | || fixP->fx_r_type == BFD_RELOC_390_GOT12 |
| 2152 | || fixP->fx_r_type == BFD_RELOC_390_GOT20 |
| 2153 | || fixP->fx_r_type == BFD_RELOC_390_GOT16 |
| 2154 | || fixP->fx_r_type == BFD_RELOC_32_GOT_PCREL |
| 2155 | || fixP->fx_r_type == BFD_RELOC_390_GOT64 |
| 2156 | || fixP->fx_r_type == BFD_RELOC_390_GOTENT |
| 2157 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT12 |
| 2158 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT16 |
| 2159 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT20 |
| 2160 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT32 |
| 2161 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT64 |
| 2162 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLTENT |
| 2163 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LOAD |
| 2164 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GDCALL |
| 2165 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDCALL |
| 2166 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GD32 |
| 2167 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GD64 |
| 2168 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE12 |
| 2169 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE20 |
| 2170 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE32 |
| 2171 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE64 |
| 2172 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDM32 |
| 2173 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDM64 |
| 2174 | || fixP->fx_r_type == BFD_RELOC_390_TLS_IE32 |
| 2175 | || fixP->fx_r_type == BFD_RELOC_390_TLS_IE64 |
| 2176 | || fixP->fx_r_type == BFD_RELOC_390_TLS_IEENT |
| 2177 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LE32 |
| 2178 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LE64 |
| 2179 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDO32 |
| 2180 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDO64 |
| 2181 | || fixP->fx_r_type == BFD_RELOC_390_TLS_DTPMOD |
| 2182 | || fixP->fx_r_type == BFD_RELOC_390_TLS_DTPOFF |
| 2183 | || fixP->fx_r_type == BFD_RELOC_390_TLS_TPOFF |
| 2184 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 2185 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 2186 | return 0; |
| 2187 | return 1; |
| 2188 | } |
| 2189 | |
| 2190 | /* Return true if we must always emit a reloc for a type and false if |
| 2191 | there is some hope of resolving it at assembly time. */ |
| 2192 | int |
| 2193 | tc_s390_force_relocation (struct fix *fixp) |
| 2194 | { |
| 2195 | /* Ensure we emit a relocation for every reference to the global |
| 2196 | offset table or to the procedure link table. */ |
| 2197 | switch (fixp->fx_r_type) |
| 2198 | { |
| 2199 | case BFD_RELOC_390_GOT12: |
| 2200 | case BFD_RELOC_390_GOT20: |
| 2201 | case BFD_RELOC_32_GOT_PCREL: |
| 2202 | case BFD_RELOC_32_GOTOFF: |
| 2203 | case BFD_RELOC_390_GOTOFF64: |
| 2204 | case BFD_RELOC_390_PLTOFF16: |
| 2205 | case BFD_RELOC_390_PLTOFF32: |
| 2206 | case BFD_RELOC_390_PLTOFF64: |
| 2207 | case BFD_RELOC_390_GOTPC: |
| 2208 | case BFD_RELOC_390_GOT16: |
| 2209 | case BFD_RELOC_390_GOTPCDBL: |
| 2210 | case BFD_RELOC_390_GOT64: |
| 2211 | case BFD_RELOC_390_GOTENT: |
| 2212 | case BFD_RELOC_390_PLT32: |
| 2213 | case BFD_RELOC_390_PLT12DBL: |
| 2214 | case BFD_RELOC_390_PLT16DBL: |
| 2215 | case BFD_RELOC_390_PLT24DBL: |
| 2216 | case BFD_RELOC_390_PLT32DBL: |
| 2217 | case BFD_RELOC_390_PLT64: |
| 2218 | case BFD_RELOC_390_GOTPLT12: |
| 2219 | case BFD_RELOC_390_GOTPLT16: |
| 2220 | case BFD_RELOC_390_GOTPLT20: |
| 2221 | case BFD_RELOC_390_GOTPLT32: |
| 2222 | case BFD_RELOC_390_GOTPLT64: |
| 2223 | case BFD_RELOC_390_GOTPLTENT: |
| 2224 | return 1; |
| 2225 | default: |
| 2226 | break; |
| 2227 | } |
| 2228 | |
| 2229 | return generic_force_reloc (fixp); |
| 2230 | } |
| 2231 | |
| 2232 | /* Apply a fixup to the object code. This is called for all the |
| 2233 | fixups we generated by the call to fix_new_exp, above. In the call |
| 2234 | above we used a reloc code which was the largest legal reloc code |
| 2235 | plus the operand index. Here we undo that to recover the operand |
| 2236 | index. At this point all symbol values should be fully resolved, |
| 2237 | and we attempt to completely resolve the reloc. If we can not do |
| 2238 | that, we determine the correct reloc code and put it back in the |
| 2239 | fixup. */ |
| 2240 | |
| 2241 | void |
| 2242 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
| 2243 | { |
| 2244 | char *where; |
| 2245 | valueT value = *valP; |
| 2246 | |
| 2247 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
| 2248 | |
| 2249 | if (fixP->fx_subsy != NULL) |
| 2250 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 2251 | _("cannot emit relocation %s against subsy symbol %s"), |
| 2252 | bfd_get_reloc_code_name (fixP->fx_r_type), |
| 2253 | S_GET_NAME (fixP->fx_subsy)); |
| 2254 | |
| 2255 | if (fixP->fx_addsy != NULL) |
| 2256 | { |
| 2257 | if (fixP->fx_pcrel) |
| 2258 | value += fixP->fx_frag->fr_address + fixP->fx_where; |
| 2259 | } |
| 2260 | else |
| 2261 | fixP->fx_done = 1; |
| 2262 | |
| 2263 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) |
| 2264 | { |
| 2265 | const struct s390_operand *operand; |
| 2266 | int opindex; |
| 2267 | |
| 2268 | opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; |
| 2269 | operand = &s390_operands[opindex]; |
| 2270 | |
| 2271 | if (fixP->fx_done) |
| 2272 | { |
| 2273 | /* Insert the fully resolved operand value. */ |
| 2274 | s390_insert_operand ((unsigned char *) where, operand, |
| 2275 | (offsetT) value, fixP->fx_file, fixP->fx_line); |
| 2276 | return; |
| 2277 | } |
| 2278 | |
| 2279 | /* Determine a BFD reloc value based on the operand information. |
| 2280 | We are only prepared to turn a few of the operands into |
| 2281 | relocs. */ |
| 2282 | fixP->fx_offset = value; |
| 2283 | if (operand->bits == 12 && operand->shift == 20) |
| 2284 | { |
| 2285 | fixP->fx_size = 2; |
| 2286 | fixP->fx_where += 2; |
| 2287 | fixP->fx_r_type = BFD_RELOC_390_12; |
| 2288 | } |
| 2289 | else if (operand->bits == 12 && operand->shift == 36) |
| 2290 | { |
| 2291 | fixP->fx_size = 2; |
| 2292 | fixP->fx_where += 4; |
| 2293 | fixP->fx_r_type = BFD_RELOC_390_12; |
| 2294 | } |
| 2295 | else if (operand->bits == 20 && operand->shift == 20) |
| 2296 | { |
| 2297 | fixP->fx_size = 4; |
| 2298 | fixP->fx_where += 2; |
| 2299 | fixP->fx_r_type = BFD_RELOC_390_20; |
| 2300 | } |
| 2301 | else if (operand->bits == 8 && operand->shift == 8) |
| 2302 | { |
| 2303 | fixP->fx_size = 1; |
| 2304 | fixP->fx_where += 1; |
| 2305 | fixP->fx_r_type = BFD_RELOC_8; |
| 2306 | } |
| 2307 | else if (operand->bits == 12 && operand->shift == 12 |
| 2308 | && (operand->flags & S390_OPERAND_PCREL)) |
| 2309 | { |
| 2310 | fixP->fx_size = 2; |
| 2311 | fixP->fx_where += 1; |
| 2312 | fixP->fx_offset += 1; |
| 2313 | fixP->fx_pcrel_adjust = 1; |
| 2314 | fixP->fx_r_type = BFD_RELOC_390_PC12DBL; |
| 2315 | } |
| 2316 | else if (operand->bits == 16 && operand->shift == 16) |
| 2317 | { |
| 2318 | fixP->fx_size = 2; |
| 2319 | fixP->fx_where += 2; |
| 2320 | if (operand->flags & S390_OPERAND_PCREL) |
| 2321 | { |
| 2322 | fixP->fx_r_type = BFD_RELOC_390_PC16DBL; |
| 2323 | fixP->fx_offset += 2; |
| 2324 | fixP->fx_pcrel_adjust = 2; |
| 2325 | } |
| 2326 | else |
| 2327 | fixP->fx_r_type = BFD_RELOC_16; |
| 2328 | } |
| 2329 | else if (operand->bits == 16 && operand->shift == 32 |
| 2330 | && (operand->flags & S390_OPERAND_PCREL)) |
| 2331 | { |
| 2332 | fixP->fx_size = 2; |
| 2333 | fixP->fx_where += 4; |
| 2334 | fixP->fx_offset += 4; |
| 2335 | fixP->fx_pcrel_adjust = 4; |
| 2336 | fixP->fx_r_type = BFD_RELOC_390_PC16DBL; |
| 2337 | } |
| 2338 | else if (operand->bits == 24 && operand->shift == 24 |
| 2339 | && (operand->flags & S390_OPERAND_PCREL)) |
| 2340 | { |
| 2341 | fixP->fx_size = 3; |
| 2342 | fixP->fx_where += 3; |
| 2343 | fixP->fx_offset += 3; |
| 2344 | fixP->fx_pcrel_adjust = 3; |
| 2345 | fixP->fx_r_type = BFD_RELOC_390_PC24DBL; |
| 2346 | } |
| 2347 | else if (operand->bits == 32 && operand->shift == 16 |
| 2348 | && (operand->flags & S390_OPERAND_PCREL)) |
| 2349 | { |
| 2350 | fixP->fx_size = 4; |
| 2351 | fixP->fx_where += 2; |
| 2352 | fixP->fx_offset += 2; |
| 2353 | fixP->fx_pcrel_adjust = 2; |
| 2354 | fixP->fx_r_type = BFD_RELOC_390_PC32DBL; |
| 2355 | } |
| 2356 | else |
| 2357 | { |
| 2358 | const char *sfile; |
| 2359 | unsigned int sline; |
| 2360 | |
| 2361 | /* Use expr_symbol_where to see if this is an expression |
| 2362 | symbol. */ |
| 2363 | if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline)) |
| 2364 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 2365 | _("unresolved expression that must be resolved")); |
| 2366 | else |
| 2367 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 2368 | _("unsupported relocation type")); |
| 2369 | fixP->fx_done = 1; |
| 2370 | return; |
| 2371 | } |
| 2372 | } |
| 2373 | else |
| 2374 | { |
| 2375 | switch (fixP->fx_r_type) |
| 2376 | { |
| 2377 | case BFD_RELOC_8: |
| 2378 | if (fixP->fx_pcrel) |
| 2379 | abort (); |
| 2380 | if (fixP->fx_done) |
| 2381 | md_number_to_chars (where, value, 1); |
| 2382 | break; |
| 2383 | case BFD_RELOC_390_12: |
| 2384 | case BFD_RELOC_390_GOT12: |
| 2385 | case BFD_RELOC_390_GOTPLT12: |
| 2386 | case BFD_RELOC_390_PC12DBL: |
| 2387 | case BFD_RELOC_390_PLT12DBL: |
| 2388 | if (fixP->fx_pcrel) |
| 2389 | value += fixP->fx_pcrel_adjust; |
| 2390 | |
| 2391 | if (fixP->fx_done) |
| 2392 | { |
| 2393 | unsigned short mop; |
| 2394 | |
| 2395 | if (fixP->fx_pcrel) |
| 2396 | value >>= 1; |
| 2397 | |
| 2398 | mop = bfd_getb16 ((unsigned char *) where); |
| 2399 | mop |= (unsigned short) (value & 0xfff); |
| 2400 | bfd_putb16 ((bfd_vma) mop, (unsigned char *) where); |
| 2401 | } |
| 2402 | break; |
| 2403 | |
| 2404 | case BFD_RELOC_390_20: |
| 2405 | case BFD_RELOC_390_GOT20: |
| 2406 | case BFD_RELOC_390_GOTPLT20: |
| 2407 | if (fixP->fx_done) |
| 2408 | { |
| 2409 | unsigned int mop; |
| 2410 | mop = bfd_getb32 ((unsigned char *) where); |
| 2411 | mop |= (unsigned int) ((value & 0xfff) << 8 | |
| 2412 | (value & 0xff000) >> 12); |
| 2413 | bfd_putb32 ((bfd_vma) mop, (unsigned char *) where); |
| 2414 | } |
| 2415 | break; |
| 2416 | |
| 2417 | case BFD_RELOC_16: |
| 2418 | case BFD_RELOC_GPREL16: |
| 2419 | case BFD_RELOC_16_GOT_PCREL: |
| 2420 | case BFD_RELOC_16_GOTOFF: |
| 2421 | if (fixP->fx_pcrel) |
| 2422 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 2423 | _("cannot emit PC relative %s relocation%s%s"), |
| 2424 | bfd_get_reloc_code_name (fixP->fx_r_type), |
| 2425 | fixP->fx_addsy != NULL ? " against " : "", |
| 2426 | (fixP->fx_addsy != NULL |
| 2427 | ? S_GET_NAME (fixP->fx_addsy) |
| 2428 | : "")); |
| 2429 | if (fixP->fx_done) |
| 2430 | md_number_to_chars (where, value, 2); |
| 2431 | break; |
| 2432 | case BFD_RELOC_390_GOT16: |
| 2433 | case BFD_RELOC_390_PLTOFF16: |
| 2434 | case BFD_RELOC_390_GOTPLT16: |
| 2435 | if (fixP->fx_done) |
| 2436 | md_number_to_chars (where, value, 2); |
| 2437 | break; |
| 2438 | case BFD_RELOC_390_PC16DBL: |
| 2439 | case BFD_RELOC_390_PLT16DBL: |
| 2440 | value += fixP->fx_pcrel_adjust; |
| 2441 | if (fixP->fx_done) |
| 2442 | md_number_to_chars (where, (offsetT) value >> 1, 2); |
| 2443 | break; |
| 2444 | |
| 2445 | case BFD_RELOC_390_PC24DBL: |
| 2446 | case BFD_RELOC_390_PLT24DBL: |
| 2447 | value += fixP->fx_pcrel_adjust; |
| 2448 | if (fixP->fx_done) |
| 2449 | { |
| 2450 | unsigned int mop; |
| 2451 | value >>= 1; |
| 2452 | |
| 2453 | mop = bfd_getb32 ((unsigned char *) where - 1); |
| 2454 | mop |= (unsigned int) (value & 0xffffff); |
| 2455 | bfd_putb32 ((bfd_vma) mop, (unsigned char *) where - 1); |
| 2456 | } |
| 2457 | break; |
| 2458 | |
| 2459 | case BFD_RELOC_32: |
| 2460 | if (fixP->fx_pcrel) |
| 2461 | fixP->fx_r_type = BFD_RELOC_32_PCREL; |
| 2462 | else |
| 2463 | fixP->fx_r_type = BFD_RELOC_32; |
| 2464 | if (fixP->fx_done) |
| 2465 | md_number_to_chars (where, value, 4); |
| 2466 | break; |
| 2467 | case BFD_RELOC_32_PCREL: |
| 2468 | case BFD_RELOC_32_BASEREL: |
| 2469 | fixP->fx_r_type = BFD_RELOC_32_PCREL; |
| 2470 | if (fixP->fx_done) |
| 2471 | md_number_to_chars (where, value, 4); |
| 2472 | break; |
| 2473 | case BFD_RELOC_32_GOT_PCREL: |
| 2474 | case BFD_RELOC_390_PLTOFF32: |
| 2475 | case BFD_RELOC_390_PLT32: |
| 2476 | case BFD_RELOC_390_GOTPLT32: |
| 2477 | if (fixP->fx_done) |
| 2478 | md_number_to_chars (where, value, 4); |
| 2479 | break; |
| 2480 | case BFD_RELOC_390_PC32DBL: |
| 2481 | case BFD_RELOC_390_PLT32DBL: |
| 2482 | case BFD_RELOC_390_GOTPCDBL: |
| 2483 | case BFD_RELOC_390_GOTENT: |
| 2484 | case BFD_RELOC_390_GOTPLTENT: |
| 2485 | value += fixP->fx_pcrel_adjust; |
| 2486 | if (fixP->fx_done) |
| 2487 | md_number_to_chars (where, (offsetT) value >> 1, 4); |
| 2488 | break; |
| 2489 | |
| 2490 | case BFD_RELOC_32_GOTOFF: |
| 2491 | if (fixP->fx_done) |
| 2492 | md_number_to_chars (where, value, sizeof (int)); |
| 2493 | break; |
| 2494 | |
| 2495 | case BFD_RELOC_390_GOTOFF64: |
| 2496 | if (fixP->fx_done) |
| 2497 | md_number_to_chars (where, value, 8); |
| 2498 | break; |
| 2499 | |
| 2500 | case BFD_RELOC_390_GOT64: |
| 2501 | case BFD_RELOC_390_PLTOFF64: |
| 2502 | case BFD_RELOC_390_PLT64: |
| 2503 | case BFD_RELOC_390_GOTPLT64: |
| 2504 | if (fixP->fx_done) |
| 2505 | md_number_to_chars (where, value, 8); |
| 2506 | break; |
| 2507 | |
| 2508 | case BFD_RELOC_64: |
| 2509 | if (fixP->fx_pcrel) |
| 2510 | fixP->fx_r_type = BFD_RELOC_64_PCREL; |
| 2511 | else |
| 2512 | fixP->fx_r_type = BFD_RELOC_64; |
| 2513 | if (fixP->fx_done) |
| 2514 | md_number_to_chars (where, value, 8); |
| 2515 | break; |
| 2516 | |
| 2517 | case BFD_RELOC_64_PCREL: |
| 2518 | fixP->fx_r_type = BFD_RELOC_64_PCREL; |
| 2519 | if (fixP->fx_done) |
| 2520 | md_number_to_chars (where, value, 8); |
| 2521 | break; |
| 2522 | |
| 2523 | case BFD_RELOC_VTABLE_INHERIT: |
| 2524 | case BFD_RELOC_VTABLE_ENTRY: |
| 2525 | fixP->fx_done = 0; |
| 2526 | return; |
| 2527 | |
| 2528 | case BFD_RELOC_390_TLS_LOAD: |
| 2529 | case BFD_RELOC_390_TLS_GDCALL: |
| 2530 | case BFD_RELOC_390_TLS_LDCALL: |
| 2531 | case BFD_RELOC_390_TLS_GD32: |
| 2532 | case BFD_RELOC_390_TLS_GD64: |
| 2533 | case BFD_RELOC_390_TLS_GOTIE12: |
| 2534 | case BFD_RELOC_390_TLS_GOTIE20: |
| 2535 | case BFD_RELOC_390_TLS_GOTIE32: |
| 2536 | case BFD_RELOC_390_TLS_GOTIE64: |
| 2537 | case BFD_RELOC_390_TLS_LDM32: |
| 2538 | case BFD_RELOC_390_TLS_LDM64: |
| 2539 | case BFD_RELOC_390_TLS_IE32: |
| 2540 | case BFD_RELOC_390_TLS_IE64: |
| 2541 | case BFD_RELOC_390_TLS_LE32: |
| 2542 | case BFD_RELOC_390_TLS_LE64: |
| 2543 | case BFD_RELOC_390_TLS_LDO32: |
| 2544 | case BFD_RELOC_390_TLS_LDO64: |
| 2545 | case BFD_RELOC_390_TLS_DTPMOD: |
| 2546 | case BFD_RELOC_390_TLS_DTPOFF: |
| 2547 | case BFD_RELOC_390_TLS_TPOFF: |
| 2548 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
| 2549 | /* Fully resolved at link time. */ |
| 2550 | break; |
| 2551 | case BFD_RELOC_390_TLS_IEENT: |
| 2552 | /* Fully resolved at link time. */ |
| 2553 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
| 2554 | value += 2; |
| 2555 | break; |
| 2556 | |
| 2557 | default: |
| 2558 | { |
| 2559 | const char *reloc_name = bfd_get_reloc_code_name (fixP->fx_r_type); |
| 2560 | |
| 2561 | if (reloc_name != NULL) |
| 2562 | as_fatal (_("Gas failure, reloc type %s\n"), reloc_name); |
| 2563 | else |
| 2564 | as_fatal (_("Gas failure, reloc type #%i\n"), fixP->fx_r_type); |
| 2565 | } |
| 2566 | } |
| 2567 | |
| 2568 | fixP->fx_offset = value; |
| 2569 | } |
| 2570 | } |
| 2571 | |
| 2572 | /* Generate a reloc for a fixup. */ |
| 2573 | |
| 2574 | arelent * |
| 2575 | tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp) |
| 2576 | { |
| 2577 | bfd_reloc_code_real_type code; |
| 2578 | arelent *reloc; |
| 2579 | |
| 2580 | code = fixp->fx_r_type; |
| 2581 | if (GOT_symbol && fixp->fx_addsy == GOT_symbol) |
| 2582 | { |
| 2583 | if ( (s390_arch_size == 32 && code == BFD_RELOC_32_PCREL) |
| 2584 | || (s390_arch_size == 64 && code == BFD_RELOC_64_PCREL)) |
| 2585 | code = BFD_RELOC_390_GOTPC; |
| 2586 | if (code == BFD_RELOC_390_PC32DBL) |
| 2587 | code = BFD_RELOC_390_GOTPCDBL; |
| 2588 | } |
| 2589 | |
| 2590 | reloc = XNEW (arelent); |
| 2591 | reloc->sym_ptr_ptr = XNEW (asymbol *); |
| 2592 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 2593 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2594 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
| 2595 | if (reloc->howto == NULL) |
| 2596 | { |
| 2597 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 2598 | _("cannot represent relocation type %s"), |
| 2599 | bfd_get_reloc_code_name (code)); |
| 2600 | /* Set howto to a garbage value so that we can keep going. */ |
| 2601 | reloc->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); |
| 2602 | gas_assert (reloc->howto != NULL); |
| 2603 | } |
| 2604 | reloc->addend = fixp->fx_offset; |
| 2605 | |
| 2606 | return reloc; |
| 2607 | } |
| 2608 | |
| 2609 | void |
| 2610 | s390_cfi_frame_initial_instructions (void) |
| 2611 | { |
| 2612 | cfi_add_CFA_def_cfa (15, s390_arch_size == 64 ? 160 : 96); |
| 2613 | } |
| 2614 | |
| 2615 | int |
| 2616 | tc_s390_regname_to_dw2regnum (char *regname) |
| 2617 | { |
| 2618 | int regnum = -1; |
| 2619 | |
| 2620 | if (regname[0] != 'c' && regname[0] != 'a') |
| 2621 | { |
| 2622 | regnum = reg_name_search (regname); |
| 2623 | if (regname[0] == 'f' && regnum != -1) |
| 2624 | regnum += 16; |
| 2625 | } |
| 2626 | else if (strcmp (regname, "ap") == 0) |
| 2627 | regnum = 32; |
| 2628 | else if (strcmp (regname, "cc") == 0) |
| 2629 | regnum = 33; |
| 2630 | return regnum; |
| 2631 | } |
| 2632 | |
| 2633 | void |
| 2634 | s390_elf_final_processing (void) |
| 2635 | { |
| 2636 | if (set_highgprs_p) |
| 2637 | elf_elfheader (stdoutput)->e_flags |= EF_S390_HIGH_GPRS; |
| 2638 | } |