1/* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000) 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 3 2004, 2005, 2006, 2007 Free Software Foundation, Inc. 4 Written by Ian Lance Taylor, Cygnus Support. 5 6 This file is part of GAS, the GNU Assembler. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GAS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23#include "as.h" 24#include "safe-ctype.h" 25#include "subsegs.h" 26#include "dw2gencfi.h" 27#include "opcode/ppc.h" 28 29#ifdef OBJ_ELF 30#include "elf/ppc.h" 31#include "dwarf2dbg.h" 32#endif 33 34#ifdef TE_PE 35#include "coff/pe.h" 36#endif 37 38/* This is the assembler for the PowerPC or POWER (RS/6000) chips. */ 39 40/* Tell the main code what the endianness is. */ 41extern int target_big_endian; 42 43/* Whether or not, we've set target_big_endian. */ 44static int set_target_endian = 0; 45 46/* Whether to use user friendly register names. */ 47#ifndef TARGET_REG_NAMES_P 48#ifdef TE_PE 49#define TARGET_REG_NAMES_P TRUE 50#else 51#define TARGET_REG_NAMES_P FALSE 52#endif 53#endif 54 55/* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST, 56 HIGHESTA. */ 57 58/* #lo(value) denotes the least significant 16 bits of the indicated. */ 59#define PPC_LO(v) ((v) & 0xffff) 60 61/* #hi(value) denotes bits 16 through 31 of the indicated value. */ 62#define PPC_HI(v) (((v) >> 16) & 0xffff) 63 64/* #ha(value) denotes the high adjusted value: bits 16 through 31 of 65 the indicated value, compensating for #lo() being treated as a 66 signed number. */ 67#define PPC_HA(v) PPC_HI ((v) + 0x8000) 68 69/* #higher(value) denotes bits 32 through 47 of the indicated value. */ 70#define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff) 71 72/* #highera(value) denotes bits 32 through 47 of the indicated value, 73 compensating for #lo() being treated as a signed number. */ 74#define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000) 75 76/* #highest(value) denotes bits 48 through 63 of the indicated value. */ 77#define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff) 78 79/* #highesta(value) denotes bits 48 through 63 of the indicated value, 80 compensating for #lo being treated as a signed number. */ 81#define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000) 82 83#define SEX16(val) ((((val) & 0xffff) ^ 0x8000) - 0x8000) 84 85static bfd_boolean reg_names_p = TARGET_REG_NAMES_P; 86 87static void ppc_macro (char *, const struct powerpc_macro *); 88static void ppc_byte (int); 89 90#if defined (OBJ_XCOFF) || defined (OBJ_ELF) 91static void ppc_tc (int); 92static void ppc_machine (int); 93#endif 94 95#ifdef OBJ_XCOFF 96static void ppc_comm (int); 97static void ppc_bb (int); 98static void ppc_bc (int); 99static void ppc_bf (int); 100static void ppc_biei (int); 101static void ppc_bs (int); 102static void ppc_eb (int); 103static void ppc_ec (int); 104static void ppc_ef (int); 105static void ppc_es (int); 106static void ppc_csect (int); 107static void ppc_change_csect (symbolS *, offsetT); 108static void ppc_function (int); 109static void ppc_extern (int); 110static void ppc_lglobl (int); 111static void ppc_section (int); 112static void ppc_named_section (int); 113static void ppc_stabx (int); 114static void ppc_rename (int); 115static void ppc_toc (int); 116static void ppc_xcoff_cons (int); 117static void ppc_vbyte (int); 118#endif 119 120#ifdef OBJ_ELF 121static void ppc_elf_cons (int); 122static void ppc_elf_rdata (int); 123static void ppc_elf_lcomm (int); 124#endif 125 126#ifdef TE_PE 127static void ppc_previous (int); 128static void ppc_pdata (int); 129static void ppc_ydata (int); 130static void ppc_reldata (int); 131static void ppc_rdata (int); 132static void ppc_ualong (int); 133static void ppc_znop (int); 134static void ppc_pe_comm (int); 135static void ppc_pe_section (int); 136static void ppc_pe_function (int); 137static void ppc_pe_tocd (int); 138#endif 139 140/* Generic assembler global variables which must be defined by all 141 targets. */ 142 143#ifdef OBJ_ELF 144/* This string holds the chars that always start a comment. If the 145 pre-processor is disabled, these aren't very useful. The macro 146 tc_comment_chars points to this. We use this, rather than the 147 usual comment_chars, so that we can switch for Solaris conventions. */ 148static const char ppc_solaris_comment_chars[] = "#!"; 149static const char ppc_eabi_comment_chars[] = "#"; 150 151#ifdef TARGET_SOLARIS_COMMENT 152const char *ppc_comment_chars = ppc_solaris_comment_chars; 153#else 154const char *ppc_comment_chars = ppc_eabi_comment_chars; 155#endif 156#else 157const char comment_chars[] = "#"; 158#endif 159 160/* Characters which start a comment at the beginning of a line. */ 161const char line_comment_chars[] = "#"; 162 163/* Characters which may be used to separate multiple commands on a 164 single line. */ 165const char line_separator_chars[] = ";"; 166 167/* Characters which are used to indicate an exponent in a floating 168 point number. */ 169const char EXP_CHARS[] = "eE"; 170 171/* Characters which mean that a number is a floating point constant, 172 as in 0d1.0. */ 173const char FLT_CHARS[] = "dD"; 174 175/* Anything that can start an operand needs to be mentioned here, 176 to stop the input scrubber eating whitespace. */ 177const char ppc_symbol_chars[] = "%["; 178 179/* The dwarf2 data alignment, adjusted for 32 or 64 bit. */ 180int ppc_cie_data_alignment; 181 182/* The target specific pseudo-ops which we support. */ 183 184const pseudo_typeS md_pseudo_table[] = 185{ 186 /* Pseudo-ops which must be overridden. */ 187 { "byte", ppc_byte, 0 }, 188 189#ifdef OBJ_XCOFF 190 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these 191 legitimately belong in the obj-*.c file. However, XCOFF is based 192 on COFF, and is only implemented for the RS/6000. We just use 193 obj-coff.c, and add what we need here. */ 194 { "comm", ppc_comm, 0 }, 195 { "lcomm", ppc_comm, 1 }, 196 { "bb", ppc_bb, 0 }, 197 { "bc", ppc_bc, 0 }, 198 { "bf", ppc_bf, 0 }, 199 { "bi", ppc_biei, 0 }, 200 { "bs", ppc_bs, 0 }, 201 { "csect", ppc_csect, 0 }, 202 { "data", ppc_section, 'd' }, 203 { "eb", ppc_eb, 0 }, 204 { "ec", ppc_ec, 0 }, 205 { "ef", ppc_ef, 0 }, 206 { "ei", ppc_biei, 1 }, 207 { "es", ppc_es, 0 }, 208 { "extern", ppc_extern, 0 }, 209 { "function", ppc_function, 0 }, 210 { "lglobl", ppc_lglobl, 0 }, 211 { "rename", ppc_rename, 0 }, 212 { "section", ppc_named_section, 0 }, 213 { "stabx", ppc_stabx, 0 }, 214 { "text", ppc_section, 't' }, 215 { "toc", ppc_toc, 0 }, 216 { "long", ppc_xcoff_cons, 2 }, 217 { "llong", ppc_xcoff_cons, 3 }, 218 { "word", ppc_xcoff_cons, 1 }, 219 { "short", ppc_xcoff_cons, 1 }, 220 { "vbyte", ppc_vbyte, 0 }, 221#endif 222 223#ifdef OBJ_ELF 224 { "llong", ppc_elf_cons, 8 }, 225 { "quad", ppc_elf_cons, 8 }, 226 { "long", ppc_elf_cons, 4 }, 227 { "word", ppc_elf_cons, 2 }, 228 { "short", ppc_elf_cons, 2 }, 229 { "rdata", ppc_elf_rdata, 0 }, 230 { "rodata", ppc_elf_rdata, 0 }, 231 { "lcomm", ppc_elf_lcomm, 0 }, 232#endif 233 234#ifdef TE_PE 235 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */ 236 { "previous", ppc_previous, 0 }, 237 { "pdata", ppc_pdata, 0 }, 238 { "ydata", ppc_ydata, 0 }, 239 { "reldata", ppc_reldata, 0 }, 240 { "rdata", ppc_rdata, 0 }, 241 { "ualong", ppc_ualong, 0 }, 242 { "znop", ppc_znop, 0 }, 243 { "comm", ppc_pe_comm, 0 }, 244 { "lcomm", ppc_pe_comm, 1 }, 245 { "section", ppc_pe_section, 0 }, 246 { "function", ppc_pe_function,0 }, 247 { "tocd", ppc_pe_tocd, 0 }, 248#endif 249 250#if defined (OBJ_XCOFF) || defined (OBJ_ELF) 251 { "tc", ppc_tc, 0 }, 252 { "machine", ppc_machine, 0 }, 253#endif 254 255 { NULL, NULL, 0 } 256}; 257 258 259/* Predefined register names if -mregnames (or default for Windows NT). 260 In general, there are lots of them, in an attempt to be compatible 261 with a number of other Windows NT assemblers. */ 262 263/* Structure to hold information about predefined registers. */ 264struct pd_reg 265 { 266 char *name; 267 int value; 268 }; 269 270/* List of registers that are pre-defined: 271 272 Each general register has predefined names of the form: 273 1. r<reg_num> which has the value <reg_num>. 274 2. r.<reg_num> which has the value <reg_num>. 275 276 Each floating point register has predefined names of the form: 277 1. f<reg_num> which has the value <reg_num>. 278 2. f.<reg_num> which has the value <reg_num>. 279 280 Each vector unit register has predefined names of the form: 281 1. v<reg_num> which has the value <reg_num>. 282 2. v.<reg_num> which has the value <reg_num>. 283 284 Each condition register has predefined names of the form: 285 1. cr<reg_num> which has the value <reg_num>. 286 2. cr.<reg_num> which has the value <reg_num>. 287 288 There are individual registers as well: 289 sp or r.sp has the value 1 290 rtoc or r.toc has the value 2 291 fpscr has the value 0 292 xer has the value 1 293 lr has the value 8 294 ctr has the value 9 295 pmr has the value 0 296 dar has the value 19 297 dsisr has the value 18 298 dec has the value 22 299 sdr1 has the value 25 300 srr0 has the value 26 301 srr1 has the value 27 302 303 The table is sorted. Suitable for searching by a binary search. */ 304 305static const struct pd_reg pre_defined_registers[] = 306{ 307 { "cr.0", 0 }, /* Condition Registers */ 308 { "cr.1", 1 }, 309 { "cr.2", 2 }, 310 { "cr.3", 3 }, 311 { "cr.4", 4 }, 312 { "cr.5", 5 }, 313 { "cr.6", 6 }, 314 { "cr.7", 7 }, 315 316 { "cr0", 0 }, 317 { "cr1", 1 }, 318 { "cr2", 2 }, 319 { "cr3", 3 }, 320 { "cr4", 4 }, 321 { "cr5", 5 }, 322 { "cr6", 6 }, 323 { "cr7", 7 }, 324 325 { "ctr", 9 }, 326 327 { "dar", 19 }, /* Data Access Register */ 328 { "dec", 22 }, /* Decrementer */ 329 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */ 330 331 { "f.0", 0 }, /* Floating point registers */ 332 { "f.1", 1 }, 333 { "f.10", 10 }, 334 { "f.11", 11 }, 335 { "f.12", 12 }, 336 { "f.13", 13 }, 337 { "f.14", 14 }, 338 { "f.15", 15 }, 339 { "f.16", 16 }, 340 { "f.17", 17 }, 341 { "f.18", 18 }, 342 { "f.19", 19 }, 343 { "f.2", 2 }, 344 { "f.20", 20 }, 345 { "f.21", 21 }, 346 { "f.22", 22 }, 347 { "f.23", 23 }, 348 { "f.24", 24 }, 349 { "f.25", 25 }, 350 { "f.26", 26 }, 351 { "f.27", 27 }, 352 { "f.28", 28 }, 353 { "f.29", 29 }, 354 { "f.3", 3 }, 355 { "f.30", 30 }, 356 { "f.31", 31 }, 357 { "f.4", 4 }, 358 { "f.5", 5 }, 359 { "f.6", 6 }, 360 { "f.7", 7 }, 361 { "f.8", 8 }, 362 { "f.9", 9 }, 363 364 { "f0", 0 }, 365 { "f1", 1 }, 366 { "f10", 10 }, 367 { "f11", 11 }, 368 { "f12", 12 }, 369 { "f13", 13 }, 370 { "f14", 14 }, 371 { "f15", 15 }, 372 { "f16", 16 }, 373 { "f17", 17 }, 374 { "f18", 18 }, 375 { "f19", 19 }, 376 { "f2", 2 }, 377 { "f20", 20 }, 378 { "f21", 21 }, 379 { "f22", 22 }, 380 { "f23", 23 }, 381 { "f24", 24 }, 382 { "f25", 25 }, 383 { "f26", 26 }, 384 { "f27", 27 }, 385 { "f28", 28 }, 386 { "f29", 29 }, 387 { "f3", 3 }, 388 { "f30", 30 }, 389 { "f31", 31 }, 390 { "f4", 4 }, 391 { "f5", 5 }, 392 { "f6", 6 }, 393 { "f7", 7 }, 394 { "f8", 8 }, 395 { "f9", 9 }, 396 397 { "fpscr", 0 }, 398 399 { "lr", 8 }, /* Link Register */ 400 401 { "pmr", 0 }, 402 403 { "r.0", 0 }, /* General Purpose Registers */ 404 { "r.1", 1 }, 405 { "r.10", 10 }, 406 { "r.11", 11 }, 407 { "r.12", 12 }, 408 { "r.13", 13 }, 409 { "r.14", 14 }, 410 { "r.15", 15 }, 411 { "r.16", 16 }, 412 { "r.17", 17 }, 413 { "r.18", 18 }, 414 { "r.19", 19 }, 415 { "r.2", 2 }, 416 { "r.20", 20 }, 417 { "r.21", 21 }, 418 { "r.22", 22 }, 419 { "r.23", 23 }, 420 { "r.24", 24 }, 421 { "r.25", 25 }, 422 { "r.26", 26 }, 423 { "r.27", 27 }, 424 { "r.28", 28 }, 425 { "r.29", 29 }, 426 { "r.3", 3 }, 427 { "r.30", 30 }, 428 { "r.31", 31 }, 429 { "r.4", 4 }, 430 { "r.5", 5 }, 431 { "r.6", 6 }, 432 { "r.7", 7 }, 433 { "r.8", 8 }, 434 { "r.9", 9 }, 435 436 { "r.sp", 1 }, /* Stack Pointer */ 437 438 { "r.toc", 2 }, /* Pointer to the table of contents */ 439 440 { "r0", 0 }, /* More general purpose registers */ 441 { "r1", 1 }, 442 { "r10", 10 }, 443 { "r11", 11 }, 444 { "r12", 12 }, 445 { "r13", 13 }, 446 { "r14", 14 }, 447 { "r15", 15 }, 448 { "r16", 16 }, 449 { "r17", 17 }, 450 { "r18", 18 }, 451 { "r19", 19 }, 452 { "r2", 2 }, 453 { "r20", 20 }, 454 { "r21", 21 }, 455 { "r22", 22 }, 456 { "r23", 23 }, 457 { "r24", 24 }, 458 { "r25", 25 }, 459 { "r26", 26 }, 460 { "r27", 27 }, 461 { "r28", 28 }, 462 { "r29", 29 }, 463 { "r3", 3 }, 464 { "r30", 30 }, 465 { "r31", 31 }, 466 { "r4", 4 }, 467 { "r5", 5 }, 468 { "r6", 6 }, 469 { "r7", 7 }, 470 { "r8", 8 }, 471 { "r9", 9 }, 472 473 { "rtoc", 2 }, /* Table of contents */ 474 475 { "sdr1", 25 }, /* Storage Description Register 1 */ 476 477 { "sp", 1 }, 478 479 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */ 480 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */ 481 482 { "v.0", 0 }, /* Vector registers */ 483 { "v.1", 1 }, 484 { "v.10", 10 }, 485 { "v.11", 11 }, 486 { "v.12", 12 }, 487 { "v.13", 13 }, 488 { "v.14", 14 }, 489 { "v.15", 15 }, 490 { "v.16", 16 }, 491 { "v.17", 17 }, 492 { "v.18", 18 }, 493 { "v.19", 19 }, 494 { "v.2", 2 }, 495 { "v.20", 20 }, 496 { "v.21", 21 }, 497 { "v.22", 22 }, 498 { "v.23", 23 }, 499 { "v.24", 24 }, 500 { "v.25", 25 }, 501 { "v.26", 26 }, 502 { "v.27", 27 }, 503 { "v.28", 28 }, 504 { "v.29", 29 }, 505 { "v.3", 3 }, 506 { "v.30", 30 }, 507 { "v.31", 31 }, 508 { "v.4", 4 }, 509 { "v.5", 5 }, 510 { "v.6", 6 }, 511 { "v.7", 7 }, 512 { "v.8", 8 }, 513 { "v.9", 9 }, 514 515 { "v0", 0 }, 516 { "v1", 1 }, 517 { "v10", 10 }, 518 { "v11", 11 }, 519 { "v12", 12 }, 520 { "v13", 13 }, 521 { "v14", 14 }, 522 { "v15", 15 }, 523 { "v16", 16 }, 524 { "v17", 17 }, 525 { "v18", 18 }, 526 { "v19", 19 }, 527 { "v2", 2 }, 528 { "v20", 20 }, 529 { "v21", 21 }, 530 { "v22", 22 }, 531 { "v23", 23 }, 532 { "v24", 24 }, 533 { "v25", 25 }, 534 { "v26", 26 }, 535 { "v27", 27 }, 536 { "v28", 28 }, 537 { "v29", 29 }, 538 { "v3", 3 }, 539 { "v30", 30 }, 540 { "v31", 31 }, 541 { "v4", 4 }, 542 { "v5", 5 }, 543 { "v6", 6 }, 544 { "v7", 7 }, 545 { "v8", 8 }, 546 { "v9", 9 }, 547 548 { "xer", 1 }, 549 550}; 551 552#define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg)) 553 554/* Given NAME, find the register number associated with that name, return 555 the integer value associated with the given name or -1 on failure. */ 556 557static int 558reg_name_search (const struct pd_reg *regs, int regcount, const char *name) 559{ 560 int middle, low, high; 561 int cmp; 562 563 low = 0; 564 high = regcount - 1; 565 566 do 567 { 568 middle = (low + high) / 2; 569 cmp = strcasecmp (name, regs[middle].name); 570 if (cmp < 0) 571 high = middle - 1; 572 else if (cmp > 0) 573 low = middle + 1; 574 else 575 return regs[middle].value; 576 } 577 while (low <= high); 578 579 return -1; 580} 581 582/* 583 * Summary of register_name. 584 * 585 * in: Input_line_pointer points to 1st char of operand. 586 * 587 * out: A expressionS. 588 * The operand may have been a register: in this case, X_op == O_register, 589 * X_add_number is set to the register number, and truth is returned. 590 * Input_line_pointer->(next non-blank) char after operand, or is in its 591 * original state. 592 */ 593 594static bfd_boolean 595register_name (expressionS *expressionP) 596{ 597 int reg_number; 598 char *name; 599 char *start; 600 char c; 601 602 /* Find the spelling of the operand. */ 603 start = name = input_line_pointer; 604 if (name[0] == '%' && ISALPHA (name[1])) 605 name = ++input_line_pointer; 606 607 else if (!reg_names_p || !ISALPHA (name[0])) 608 return FALSE; 609 610 c = get_symbol_end (); 611 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name); 612 613 /* Put back the delimiting char. */ 614 *input_line_pointer = c; 615 616 /* Look to see if it's in the register table. */ 617 if (reg_number >= 0) 618 { 619 expressionP->X_op = O_register; 620 expressionP->X_add_number = reg_number; 621 622 /* Make the rest nice. */ 623 expressionP->X_add_symbol = NULL; 624 expressionP->X_op_symbol = NULL; 625 return TRUE; 626 } 627 628 /* Reset the line as if we had not done anything. */ 629 input_line_pointer = start; 630 return FALSE; 631} 632 633/* This function is called for each symbol seen in an expression. It 634 handles the special parsing which PowerPC assemblers are supposed 635 to use for condition codes. */ 636 637/* Whether to do the special parsing. */ 638static bfd_boolean cr_operand; 639 640/* Names to recognize in a condition code. This table is sorted. */ 641static const struct pd_reg cr_names[] = 642{ 643 { "cr0", 0 }, 644 { "cr1", 1 }, 645 { "cr2", 2 }, 646 { "cr3", 3 }, 647 { "cr4", 4 }, 648 { "cr5", 5 }, 649 { "cr6", 6 }, 650 { "cr7", 7 }, 651 { "eq", 2 }, 652 { "gt", 1 }, 653 { "lt", 0 }, 654 { "so", 3 }, 655 { "un", 3 } 656}; 657 658/* Parsing function. This returns non-zero if it recognized an 659 expression. */ 660 661int 662ppc_parse_name (const char *name, expressionS *expr) 663{ 664 int val; 665 666 if (! cr_operand) 667 return 0; 668 669 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0], 670 name); 671 if (val < 0) 672 return 0; 673 674 expr->X_op = O_constant; 675 expr->X_add_number = val; 676 677 return 1; 678} 679 680/* Local variables. */ 681 682/* The type of processor we are assembling for. This is one or more 683 of the PPC_OPCODE flags defined in opcode/ppc.h. */ 684static unsigned long ppc_cpu = PPC_OPCODE_ANY; 685 686/* Whether to target xcoff64/elf64. */ 687static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64; 688 689/* Opcode hash table. */ 690static struct hash_control *ppc_hash; 691 692/* Macro hash table. */ 693static struct hash_control *ppc_macro_hash; 694 695#ifdef OBJ_ELF 696/* What type of shared library support to use. */ 697static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE; 698 699/* Flags to set in the elf header. */ 700static flagword ppc_flags = 0; 701 702/* Whether this is Solaris or not. */ 703#ifdef TARGET_SOLARIS_COMMENT 704#define SOLARIS_P TRUE 705#else 706#define SOLARIS_P FALSE 707#endif 708 709static bfd_boolean msolaris = SOLARIS_P; 710#endif 711 712#ifdef OBJ_XCOFF 713 714/* The RS/6000 assembler uses the .csect pseudo-op to generate code 715 using a bunch of different sections. These assembler sections, 716 however, are all encompassed within the .text or .data sections of 717 the final output file. We handle this by using different 718 subsegments within these main segments. */ 719 720/* Next subsegment to allocate within the .text segment. */ 721static subsegT ppc_text_subsegment = 2; 722 723/* Linked list of csects in the text section. */ 724static symbolS *ppc_text_csects; 725 726/* Next subsegment to allocate within the .data segment. */ 727static subsegT ppc_data_subsegment = 2; 728 729/* Linked list of csects in the data section. */ 730static symbolS *ppc_data_csects; 731 732/* The current csect. */ 733static symbolS *ppc_current_csect; 734 735/* The RS/6000 assembler uses a TOC which holds addresses of functions 736 and variables. Symbols are put in the TOC with the .tc pseudo-op. 737 A special relocation is used when accessing TOC entries. We handle 738 the TOC as a subsegment within the .data segment. We set it up if 739 we see a .toc pseudo-op, and save the csect symbol here. */ 740static symbolS *ppc_toc_csect; 741 742/* The first frag in the TOC subsegment. */ 743static fragS *ppc_toc_frag; 744 745/* The first frag in the first subsegment after the TOC in the .data 746 segment. NULL if there are no subsegments after the TOC. */ 747static fragS *ppc_after_toc_frag; 748 749/* The current static block. */ 750static symbolS *ppc_current_block; 751 752/* The COFF debugging section; set by md_begin. This is not the 753 .debug section, but is instead the secret BFD section which will 754 cause BFD to set the section number of a symbol to N_DEBUG. */ 755static asection *ppc_coff_debug_section; 756 757#endif /* OBJ_XCOFF */ 758 759#ifdef TE_PE 760 761/* Various sections that we need for PE coff support. */ 762static segT ydata_section; 763static segT pdata_section; 764static segT reldata_section; 765static segT rdata_section; 766static segT tocdata_section; 767 768/* The current section and the previous section. See ppc_previous. */ 769static segT ppc_previous_section; 770static segT ppc_current_section; 771 772#endif /* TE_PE */ 773 774#ifdef OBJ_ELF 775symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */ 776#define PPC_APUINFO_ISEL 0x40 777#define PPC_APUINFO_PMR 0x41 778#define PPC_APUINFO_RFMCI 0x42 779#define PPC_APUINFO_CACHELCK 0x43 780#define PPC_APUINFO_SPE 0x100 781#define PPC_APUINFO_EFS 0x101 782#define PPC_APUINFO_BRLOCK 0x102 783 784/* 785 * We keep a list of APUinfo 786 */ 787unsigned long *ppc_apuinfo_list; 788unsigned int ppc_apuinfo_num; 789unsigned int ppc_apuinfo_num_alloc; 790#endif /* OBJ_ELF */ 791 792#ifdef OBJ_ELF 793const char *const md_shortopts = "b:l:usm:K:VQ:"; 794#else 795const char *const md_shortopts = "um:"; 796#endif 797const struct option md_longopts[] = { 798 {NULL, no_argument, NULL, 0} 799}; 800const size_t md_longopts_size = sizeof (md_longopts); 801 802 803/* Handle -m options that set cpu type, and .machine arg. */ 804 805static int 806parse_cpu (const char *arg) 807{ 808 /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2 809 (RIOS2). */ 810 if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0) 811 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2 | PPC_OPCODE_32; 812 /* -mpwr means to assemble for the IBM POWER (RIOS1). */ 813 else if (strcmp (arg, "pwr") == 0) 814 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_32; 815 /* -m601 means to assemble for the PowerPC 601, which includes 816 instructions that are holdovers from the Power. */ 817 else if (strcmp (arg, "601") == 0) 818 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC 819 | PPC_OPCODE_601 | PPC_OPCODE_32); 820 /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the 821 PowerPC 603/604. */ 822 else if (strcmp (arg, "ppc") == 0 823 || strcmp (arg, "ppc32") == 0 824 || strcmp (arg, "603") == 0 825 || strcmp (arg, "604") == 0) 826 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32; 827 /* -m403 and -m405 mean to assemble for the PowerPC 403/405. */ 828 else if (strcmp (arg, "403") == 0 829 || strcmp (arg, "405") == 0) 830 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC 831 | PPC_OPCODE_403 | PPC_OPCODE_32); 832 else if (strcmp (arg, "440") == 0) 833 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32 834 | PPC_OPCODE_440 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI); 835 else if (strcmp (arg, "7400") == 0 836 || strcmp (arg, "7410") == 0 837 || strcmp (arg, "7450") == 0 838 || strcmp (arg, "7455") == 0) 839 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC 840 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_32); 841 else if (strcmp (arg, "e300") == 0) 842 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32 843 | PPC_OPCODE_E300); 844 else if (strcmp (arg, "altivec") == 0) 845 { 846 if (ppc_cpu == 0) 847 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ALTIVEC; 848 else 849 ppc_cpu |= PPC_OPCODE_ALTIVEC; 850 } 851 else if (strcmp (arg, "e500") == 0 || strcmp (arg, "e500x2") == 0) 852 { 853 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE 854 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK 855 | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK 856 | PPC_OPCODE_RFMCI); 857 } 858 else if (strcmp (arg, "spe") == 0) 859 { 860 if (ppc_cpu == 0) 861 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_SPE | PPC_OPCODE_EFS; 862 else 863 ppc_cpu |= PPC_OPCODE_SPE; 864 } 865 /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC 866 620. */ 867 else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0) 868 { 869 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64; 870 } 871 else if (strcmp (arg, "ppc64bridge") == 0) 872 { 873 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC 874 | PPC_OPCODE_64_BRIDGE | PPC_OPCODE_64); 875 } 876 /* -mbooke/-mbooke32 mean enable 32-bit BookE support. */ 877 else if (strcmp (arg, "booke") == 0 || strcmp (arg, "booke32") == 0) 878 { 879 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32; 880 } 881 /* -mbooke64 means enable 64-bit BookE support. */ 882 else if (strcmp (arg, "booke64") == 0) 883 { 884 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE 885 | PPC_OPCODE_BOOKE64 | PPC_OPCODE_64); 886 } 887 else if (strcmp (arg, "power4") == 0) 888 { 889 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC 890 | PPC_OPCODE_64 | PPC_OPCODE_POWER4); 891 } 892 else if (strcmp (arg, "power5") == 0) 893 { 894 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC 895 | PPC_OPCODE_64 | PPC_OPCODE_POWER4 896 | PPC_OPCODE_POWER5); 897 } 898 else if (strcmp (arg, "power6") == 0) 899 { 900 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC 901 | PPC_OPCODE_64 | PPC_OPCODE_POWER4 902 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6); 903 } 904 else if (strcmp (arg, "cell") == 0) 905 { 906 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC 907 | PPC_OPCODE_64 | PPC_OPCODE_POWER4 908 | PPC_OPCODE_CELL); 909 } 910 /* -mcom means assemble for the common intersection between Power 911 and PowerPC. At present, we just allow the union, rather 912 than the intersection. */ 913 else if (strcmp (arg, "com") == 0) 914 ppc_cpu = PPC_OPCODE_COMMON | PPC_OPCODE_32; 915 /* -many means to assemble for any architecture (PWR/PWRX/PPC). */ 916 else if (strcmp (arg, "any") == 0) 917 ppc_cpu |= PPC_OPCODE_ANY; 918 else 919 return 0; 920 921 return 1; 922} 923 924int 925md_parse_option (int c, char *arg) 926{ 927 switch (c) 928 { 929 case 'u': 930 /* -u means that any undefined symbols should be treated as 931 external, which is the default for gas anyhow. */ 932 break; 933 934#ifdef OBJ_ELF 935 case 'l': 936 /* Solaris as takes -le (presumably for little endian). For completeness 937 sake, recognize -be also. */ 938 if (strcmp (arg, "e") == 0) 939 { 940 target_big_endian = 0; 941 set_target_endian = 1; 942 } 943 else 944 return 0; 945 946 break; 947 948 case 'b': 949 if (strcmp (arg, "e") == 0) 950 { 951 target_big_endian = 1; 952 set_target_endian = 1; 953 } 954 else 955 return 0; 956 957 break; 958 959 case 'K': 960 /* Recognize -K PIC. */ 961 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0) 962 { 963 shlib = SHLIB_PIC; 964 ppc_flags |= EF_PPC_RELOCATABLE_LIB; 965 } 966 else 967 return 0; 968 969 break; 970#endif 971 972 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */ 973 case 'a': 974 if (strcmp (arg, "64") == 0) 975 { 976#ifdef BFD64 977 ppc_obj64 = 1; 978#else 979 as_fatal (_("%s unsupported"), "-a64"); 980#endif 981 } 982 else if (strcmp (arg, "32") == 0) 983 ppc_obj64 = 0; 984 else 985 return 0; 986 break; 987 988 case 'm': 989 if (parse_cpu (arg)) 990 ; 991 992 else if (strcmp (arg, "regnames") == 0) 993 reg_names_p = TRUE; 994 995 else if (strcmp (arg, "no-regnames") == 0) 996 reg_names_p = FALSE; 997 998#ifdef OBJ_ELF 999 /* -mrelocatable/-mrelocatable-lib -- warn about initializations 1000 that require relocation. */ 1001 else if (strcmp (arg, "relocatable") == 0) 1002 { 1003 shlib = SHLIB_MRELOCATABLE; 1004 ppc_flags |= EF_PPC_RELOCATABLE; 1005 } 1006 1007 else if (strcmp (arg, "relocatable-lib") == 0) 1008 { 1009 shlib = SHLIB_MRELOCATABLE; 1010 ppc_flags |= EF_PPC_RELOCATABLE_LIB; 1011 } 1012 1013 /* -memb, set embedded bit. */ 1014 else if (strcmp (arg, "emb") == 0) 1015 ppc_flags |= EF_PPC_EMB; 1016 1017 /* -mlittle/-mbig set the endianess. */ 1018 else if (strcmp (arg, "little") == 0 1019 || strcmp (arg, "little-endian") == 0) 1020 { 1021 target_big_endian = 0; 1022 set_target_endian = 1; 1023 } 1024 1025 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0) 1026 { 1027 target_big_endian = 1; 1028 set_target_endian = 1; 1029 } 1030 1031 else if (strcmp (arg, "solaris") == 0) 1032 { 1033 msolaris = TRUE; 1034 ppc_comment_chars = ppc_solaris_comment_chars; 1035 } 1036 1037 else if (strcmp (arg, "no-solaris") == 0) 1038 { 1039 msolaris = FALSE; 1040 ppc_comment_chars = ppc_eabi_comment_chars; 1041 } 1042#endif 1043 else 1044 { 1045 as_bad (_("invalid switch -m%s"), arg); 1046 return 0; 1047 } 1048 break; 1049 1050#ifdef OBJ_ELF 1051 /* -V: SVR4 argument to print version ID. */ 1052 case 'V': 1053 print_version_id (); 1054 break; 1055 1056 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section 1057 should be emitted or not. FIXME: Not implemented. */ 1058 case 'Q': 1059 break; 1060 1061 /* Solaris takes -s to specify that .stabs go in a .stabs section, 1062 rather than .stabs.excl, which is ignored by the linker. 1063 FIXME: Not implemented. */ 1064 case 's': 1065 if (arg) 1066 return 0; 1067 1068 break; 1069#endif 1070 1071 default: 1072 return 0; 1073 } 1074 1075 return 1; 1076} 1077 1078void 1079md_show_usage (FILE *stream) 1080{ 1081 fprintf (stream, _("\ 1082PowerPC options:\n\ 1083-a32 generate ELF32/XCOFF32\n\ 1084-a64 generate ELF64/XCOFF64\n\ 1085-u ignored\n\ 1086-mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\ 1087-mpwr generate code for POWER (RIOS1)\n\ 1088-m601 generate code for PowerPC 601\n\ 1089-mppc, -mppc32, -m603, -m604\n\ 1090 generate code for PowerPC 603/604\n\ 1091-m403, -m405 generate code for PowerPC 403/405\n\ 1092-m440 generate code for PowerPC 440\n\ 1093-m7400, -m7410, -m7450, -m7455\n\ 1094 generate code For PowerPC 7400/7410/7450/7455\n")); 1095 fprintf (stream, _("\ 1096-mppc64, -m620 generate code for PowerPC 620/625/630\n\ 1097-mppc64bridge generate code for PowerPC 64, including bridge insns\n\ 1098-mbooke64 generate code for 64-bit PowerPC BookE\n\ 1099-mbooke, mbooke32 generate code for 32-bit PowerPC BookE\n\ 1100-mpower4 generate code for Power4 architecture\n\ 1101-mpower5 generate code for Power5 architecture\n\ 1102-mpower6 generate code for Power6 architecture\n\ 1103-mcell generate code for Cell Broadband Engine architecture\n\ 1104-mcom generate code Power/PowerPC common instructions\n\ 1105-many generate code for any architecture (PWR/PWRX/PPC)\n")); 1106 fprintf (stream, _("\ 1107-maltivec generate code for AltiVec\n\ 1108-me300 generate code for PowerPC e300 family\n\ 1109-me500, -me500x2 generate code for Motorola e500 core complex\n\ 1110-mspe generate code for Motorola SPE instructions\n\ 1111-mregnames Allow symbolic names for registers\n\ 1112-mno-regnames Do not allow symbolic names for registers\n")); 1113#ifdef OBJ_ELF 1114 fprintf (stream, _("\ 1115-mrelocatable support for GCC's -mrelocatble option\n\ 1116-mrelocatable-lib support for GCC's -mrelocatble-lib option\n\ 1117-memb set PPC_EMB bit in ELF flags\n\ 1118-mlittle, -mlittle-endian, -l, -le\n\ 1119 generate code for a little endian machine\n\ 1120-mbig, -mbig-endian, -b, -be\n\ 1121 generate code for a big endian machine\n\ 1122-msolaris generate code for Solaris\n\ 1123-mno-solaris do not generate code for Solaris\n\ 1124-V print assembler version number\n\ 1125-Qy, -Qn ignored\n")); 1126#endif 1127} 1128 1129/* Set ppc_cpu if it is not already set. */ 1130 1131static void 1132ppc_set_cpu (void) 1133{ 1134 const char *default_os = TARGET_OS; 1135 const char *default_cpu = TARGET_CPU; 1136 1137 if ((ppc_cpu & ~PPC_OPCODE_ANY) == 0) 1138 { 1139 if (ppc_obj64) 1140 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64; 1141 else if (strncmp (default_os, "aix", 3) == 0 1142 && default_os[3] >= '4' && default_os[3] <= '9') 1143 ppc_cpu |= PPC_OPCODE_COMMON | PPC_OPCODE_32; 1144 else if (strncmp (default_os, "aix3", 4) == 0) 1145 ppc_cpu |= PPC_OPCODE_POWER | PPC_OPCODE_32; 1146 else if (strcmp (default_cpu, "rs6000") == 0) 1147 ppc_cpu |= PPC_OPCODE_POWER | PPC_OPCODE_32; 1148 else if (strncmp (default_cpu, "powerpc", 7) == 0) 1149 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32; 1150 else 1151 as_fatal (_("Unknown default cpu = %s, os = %s"), 1152 default_cpu, default_os); 1153 } 1154} 1155 1156/* Figure out the BFD architecture to use. This function and ppc_mach 1157 are called well before md_begin, when the output file is opened. */ 1158 1159enum bfd_architecture 1160ppc_arch (void) 1161{ 1162 const char *default_cpu = TARGET_CPU; 1163 ppc_set_cpu (); 1164 1165 if ((ppc_cpu & PPC_OPCODE_PPC) != 0) 1166 return bfd_arch_powerpc; 1167 else if ((ppc_cpu & PPC_OPCODE_POWER) != 0) 1168 return bfd_arch_rs6000; 1169 else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0) 1170 { 1171 if (strcmp (default_cpu, "rs6000") == 0) 1172 return bfd_arch_rs6000; 1173 else if (strncmp (default_cpu, "powerpc", 7) == 0) 1174 return bfd_arch_powerpc; 1175 } 1176 1177 as_fatal (_("Neither Power nor PowerPC opcodes were selected.")); 1178 return bfd_arch_unknown; 1179} 1180 1181unsigned long 1182ppc_mach (void) 1183{ 1184 if (ppc_obj64) 1185 return bfd_mach_ppc64; 1186 else if (ppc_arch () == bfd_arch_rs6000) 1187 return bfd_mach_rs6k; 1188 else 1189 return bfd_mach_ppc; 1190} 1191 1192extern char* 1193ppc_target_format (void) 1194{ 1195#ifdef OBJ_COFF 1196#ifdef TE_PE 1197 return target_big_endian ? "pe-powerpc" : "pe-powerpcle"; 1198#elif TE_POWERMAC 1199 return "xcoff-powermac"; 1200#else 1201# ifdef TE_AIX5 1202 return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000"); 1203# else 1204 return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000"); 1205# endif 1206#endif 1207#endif 1208#ifdef OBJ_ELF 1209# ifdef TE_VXWORKS 1210 return "elf32-powerpc-vxworks"; 1211# else 1212 return (target_big_endian 1213 ? (ppc_obj64 ? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd") 1214 : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle")); 1215# endif 1216#endif 1217} 1218 1219/* Insert opcodes and macros into hash tables. Called at startup and 1220 for .cpu pseudo. */ 1221 1222static void 1223ppc_setup_opcodes (void) 1224{ 1225 const struct powerpc_opcode *op; 1226 const struct powerpc_opcode *op_end; 1227 const struct powerpc_macro *macro; 1228 const struct powerpc_macro *macro_end; 1229 bfd_boolean bad_insn = FALSE; 1230 1231 if (ppc_hash != NULL) 1232 hash_die (ppc_hash); 1233 if (ppc_macro_hash != NULL) 1234 hash_die (ppc_macro_hash); 1235 1236 /* Insert the opcodes into a hash table. */ 1237 ppc_hash = hash_new (); 1238 1239 if (ENABLE_CHECKING) 1240 { 1241 unsigned int i; 1242 1243 /* Check operand masks. Code here and in the disassembler assumes 1244 all the 1's in the mask are contiguous. */ 1245 for (i = 0; i < num_powerpc_operands; ++i) 1246 { 1247 unsigned long mask = powerpc_operands[i].bitm; 1248 unsigned long right_bit; 1249 unsigned int j; 1250 1251 right_bit = mask & -mask; 1252 mask += right_bit; 1253 right_bit = mask & -mask; 1254 if (mask != right_bit) 1255 { 1256 as_bad (_("powerpc_operands[%d].bitm invalid"), i); 1257 bad_insn = TRUE; 1258 } 1259 for (j = i + 1; j < num_powerpc_operands; ++j) 1260 if (memcmp (&powerpc_operands[i], &powerpc_operands[j], 1261 sizeof (powerpc_operands[0])) == 0) 1262 { 1263 as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"), 1264 j, i); 1265 bad_insn = TRUE; 1266 } 1267 } 1268 } 1269 1270 op_end = powerpc_opcodes + powerpc_num_opcodes; 1271 for (op = powerpc_opcodes; op < op_end; op++) 1272 { 1273 if (ENABLE_CHECKING) 1274 { 1275 const unsigned char *o; 1276 unsigned long omask = op->mask; 1277 1278 /* The mask had better not trim off opcode bits. */ 1279 if ((op->opcode & omask) != op->opcode) 1280 { 1281 as_bad (_("mask trims opcode bits for %s"), 1282 op->name); 1283 bad_insn = TRUE; 1284 } 1285 1286 /* The operands must not overlap the opcode or each other. */ 1287 for (o = op->operands; *o; ++o) 1288 if (*o >= num_powerpc_operands) 1289 { 1290 as_bad (_("operand index error for %s"), 1291 op->name); 1292 bad_insn = TRUE; 1293 } 1294 else 1295 { 1296 const struct powerpc_operand *operand = &powerpc_operands[*o]; 1297 if (operand->shift >= 0) 1298 { 1299 unsigned long mask = operand->bitm << operand->shift; 1300 if (omask & mask) 1301 { 1302 as_bad (_("operand %d overlap in %s"), 1303 (int) (o - op->operands), op->name); 1304 bad_insn = TRUE; 1305 } 1306 omask |= mask; 1307 } 1308 } 1309 } 1310 1311 if ((op->flags & ppc_cpu & ~(PPC_OPCODE_32 | PPC_OPCODE_64)) != 0 1312 && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0 1313 || ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) 1314 == (ppc_cpu & (PPC_OPCODE_32 | PPC_OPCODE_64))) 1315 || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0) 1316 /* Certain instructions (eg: extsw) do not exist in the 1317 32-bit BookE instruction set, but they do exist in the 1318 64-bit BookE instruction set, and other PPC instruction 1319 sets. Check to see if the opcode has the BOOKE64 flag set. 1320 If it does make sure that the target CPU is not the BookE32. */ 1321 && ((op->flags & PPC_OPCODE_BOOKE64) == 0 1322 || (ppc_cpu & PPC_OPCODE_BOOKE64) == PPC_OPCODE_BOOKE64 1323 || (ppc_cpu & PPC_OPCODE_BOOKE) == 0) 1324 && ((op->flags & (PPC_OPCODE_POWER4 | PPC_OPCODE_NOPOWER4)) == 0 1325 || ((op->flags & PPC_OPCODE_POWER4) 1326 == (ppc_cpu & PPC_OPCODE_POWER4))) 1327 && ((op->flags & PPC_OPCODE_POWER5) == 0 1328 || ((op->flags & PPC_OPCODE_POWER5) 1329 == (ppc_cpu & PPC_OPCODE_POWER5))) 1330 && ((op->flags & PPC_OPCODE_POWER6) == 0 1331 || ((op->flags & PPC_OPCODE_POWER6) 1332 == (ppc_cpu & PPC_OPCODE_POWER6)))) 1333 { 1334 const char *retval; 1335 1336 retval = hash_insert (ppc_hash, op->name, (void *) op); 1337 if (retval != NULL) 1338 { 1339 /* Ignore Power duplicates for -m601. */ 1340 if ((ppc_cpu & PPC_OPCODE_601) != 0 1341 && (op->flags & PPC_OPCODE_POWER) != 0) 1342 continue; 1343 1344 as_bad (_("duplicate instruction %s"), 1345 op->name); 1346 bad_insn = TRUE; 1347 } 1348 } 1349 } 1350 1351 if ((ppc_cpu & PPC_OPCODE_ANY) != 0) 1352 for (op = powerpc_opcodes; op < op_end; op++) 1353 hash_insert (ppc_hash, op->name, (void *) op); 1354 1355 /* Insert the macros into a hash table. */ 1356 ppc_macro_hash = hash_new (); 1357 1358 macro_end = powerpc_macros + powerpc_num_macros; 1359 for (macro = powerpc_macros; macro < macro_end; macro++) 1360 { 1361 if ((macro->flags & ppc_cpu) != 0) 1362 { 1363 const char *retval; 1364 1365 retval = hash_insert (ppc_macro_hash, macro->name, (void *) macro); 1366 if (retval != (const char *) NULL) 1367 { 1368 as_bad (_("duplicate macro %s"), macro->name); 1369 bad_insn = TRUE; 1370 } 1371 } 1372 } 1373 1374 if (bad_insn) 1375 abort (); 1376} 1377 1378/* This function is called when the assembler starts up. It is called 1379 after the options have been parsed and the output file has been 1380 opened. */ 1381 1382void 1383md_begin (void) 1384{ 1385 ppc_set_cpu (); 1386 1387 ppc_cie_data_alignment = ppc_obj64 ? -8 : -4; 1388 1389#ifdef OBJ_ELF 1390 /* Set the ELF flags if desired. */ 1391 if (ppc_flags && !msolaris) 1392 bfd_set_private_flags (stdoutput, ppc_flags); 1393#endif 1394 1395 ppc_setup_opcodes (); 1396 1397 /* Tell the main code what the endianness is if it is not overridden 1398 by the user. */ 1399 if (!set_target_endian) 1400 { 1401 set_target_endian = 1; 1402 target_big_endian = PPC_BIG_ENDIAN; 1403 } 1404 1405#ifdef OBJ_XCOFF 1406 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG); 1407 1408 /* Create dummy symbols to serve as initial csects. This forces the 1409 text csects to precede the data csects. These symbols will not 1410 be output. */ 1411 ppc_text_csects = symbol_make ("dummy\001"); 1412 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects; 1413 ppc_data_csects = symbol_make ("dummy\001"); 1414 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects; 1415#endif 1416 1417#ifdef TE_PE 1418 1419 ppc_current_section = text_section; 1420 ppc_previous_section = 0; 1421 1422#endif 1423} 1424 1425void 1426ppc_cleanup (void) 1427{ 1428#ifdef OBJ_ELF 1429 if (ppc_apuinfo_list == NULL) 1430 return; 1431 1432 /* Ok, so write the section info out. We have this layout: 1433 1434 byte data what 1435 ---- ---- ---- 1436 0 8 length of "APUinfo\0" 1437 4 (n*4) number of APU's (4 bytes each) 1438 8 2 note type 2 1439 12 "APUinfo\0" name 1440 20 APU#1 first APU's info 1441 24 APU#2 second APU's info 1442 ... ... 1443 */ 1444 { 1445 char *p; 1446 asection *seg = now_seg; 1447 subsegT subseg = now_subseg; 1448 asection *apuinfo_secp = (asection *) NULL; 1449 unsigned int i; 1450 1451 /* Create the .PPC.EMB.apuinfo section. */ 1452 apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0); 1453 bfd_set_section_flags (stdoutput, 1454 apuinfo_secp, 1455 SEC_HAS_CONTENTS | SEC_READONLY); 1456 1457 p = frag_more (4); 1458 md_number_to_chars (p, (valueT) 8, 4); 1459 1460 p = frag_more (4); 1461 md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4); 1462 1463 p = frag_more (4); 1464 md_number_to_chars (p, (valueT) 2, 4); 1465 1466 p = frag_more (8); 1467 strcpy (p, "APUinfo"); 1468 1469 for (i = 0; i < ppc_apuinfo_num; i++) 1470 { 1471 p = frag_more (4); 1472 md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4); 1473 } 1474 1475 frag_align (2, 0, 0); 1476 1477 /* We probably can't restore the current segment, for there likely 1478 isn't one yet... */ 1479 if (seg && subseg) 1480 subseg_set (seg, subseg); 1481 } 1482#endif 1483} 1484 1485/* Insert an operand value into an instruction. */ 1486 1487static unsigned long 1488ppc_insert_operand (unsigned long insn, 1489 const struct powerpc_operand *operand, 1490 offsetT val, 1491 char *file, 1492 unsigned int line) 1493{ 1494 long min, max, right; 1495 1496 max = operand->bitm; 1497 right = max & -max; 1498 min = 0; 1499 1500 if ((operand->flags & PPC_OPERAND_SIGNED) != 0) 1501 { 1502 if ((operand->flags & PPC_OPERAND_SIGNOPT) == 0) 1503 max = (max >> 1) & -right; 1504 min = ~max & -right; 1505 } 1506 1507 if ((operand->flags & PPC_OPERAND_PLUS1) != 0) 1508 max++; 1509 1510 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0) 1511 { 1512 long tmp = min; 1513 min = -max; 1514 max = -tmp; 1515 } 1516 1517 if (min <= max) 1518 { 1519 /* Some people write constants with the sign extension done by 1520 hand but only up to 32 bits. This shouldn't really be valid, 1521 but, to permit this code to assemble on a 64-bit host, we 1522 sign extend the 32-bit value to 64 bits if so doing makes the 1523 value valid. */ 1524 if (val > max 1525 && (offsetT) (val - 0x80000000 - 0x80000000) >= min 1526 && (offsetT) (val - 0x80000000 - 0x80000000) <= max 1527 && ((val - 0x80000000 - 0x80000000) & (right - 1)) == 0) 1528 val = val - 0x80000000 - 0x80000000; 1529 1530 /* Similarly, people write expressions like ~(1<<15), and expect 1531 this to be OK for a 32-bit unsigned value. */ 1532 else if (val < min 1533 && (offsetT) (val + 0x80000000 + 0x80000000) >= min 1534 && (offsetT) (val + 0x80000000 + 0x80000000) <= max 1535 && ((val + 0x80000000 + 0x80000000) & (right - 1)) == 0) 1536 val = val + 0x80000000 + 0x80000000; 1537 1538 else if (val < min 1539 || val > max 1540 || (val & (right - 1)) != 0) 1541 as_bad_value_out_of_range (_("operand"), val, min, max, file, line); 1542 } 1543 1544 if (operand->insert) 1545 { 1546 const char *errmsg; 1547 1548 errmsg = NULL; 1549 insn = (*operand->insert) (insn, (long) val, ppc_cpu, &errmsg); 1550 if (errmsg != (const char *) NULL) 1551 as_bad_where (file, line, "%s", errmsg); 1552 } 1553 else 1554 insn |= ((long) val & operand->bitm) << operand->shift; 1555 1556 return insn; 1557} 1558 1559 1560#ifdef OBJ_ELF 1561/* Parse @got, etc. and return the desired relocation. */ 1562static bfd_reloc_code_real_type 1563ppc_elf_suffix (char **str_p, expressionS *exp_p) 1564{ 1565 struct map_bfd { 1566 char *string; 1567 unsigned int length : 8; 1568 unsigned int valid32 : 1; 1569 unsigned int valid64 : 1; 1570 unsigned int reloc; 1571 }; 1572 1573 char ident[20]; 1574 char *str = *str_p; 1575 char *str2; 1576 int ch; 1577 int len; 1578 const struct map_bfd *ptr; 1579 1580#define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc } 1581#define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc } 1582#define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc } 1583 1584 static const struct map_bfd mapping[] = { 1585 MAP ("l", BFD_RELOC_LO16), 1586 MAP ("h", BFD_RELOC_HI16), 1587 MAP ("ha", BFD_RELOC_HI16_S), 1588 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN), 1589 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN), 1590 MAP ("got", BFD_RELOC_16_GOTOFF), 1591 MAP ("got@l", BFD_RELOC_LO16_GOTOFF), 1592 MAP ("got@h", BFD_RELOC_HI16_GOTOFF), 1593 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF), 1594 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF), 1595 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF), 1596 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF), 1597 MAP ("copy", BFD_RELOC_PPC_COPY), 1598 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT), 1599 MAP ("sectoff", BFD_RELOC_16_BASEREL), 1600 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL), 1601 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL), 1602 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL), 1603 MAP ("tls", BFD_RELOC_PPC_TLS), 1604 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD), 1605 MAP ("dtprel", BFD_RELOC_PPC_DTPREL), 1606 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO), 1607 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI), 1608 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA), 1609 MAP ("tprel", BFD_RELOC_PPC_TPREL), 1610 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO), 1611 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI), 1612 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA), 1613 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16), 1614 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO), 1615 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI), 1616 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA), 1617 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16), 1618 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO), 1619 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI), 1620 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA), 1621 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16), 1622 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO), 1623 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI), 1624 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA), 1625 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16), 1626 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO), 1627 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI), 1628 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA), 1629 MAP32 ("fixup", BFD_RELOC_CTOR), 1630 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL), 1631 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL), 1632 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC), 1633 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC), 1634 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL), 1635 MAP32 ("sdarel", BFD_RELOC_GPREL16), 1636 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32), 1637 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16), 1638 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO), 1639 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI), 1640 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA), 1641 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16), 1642 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL), 1643 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16), 1644 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21), 1645 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF), 1646 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16), 1647 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO), 1648 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI), 1649 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA), 1650 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD), 1651 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA), 1652 MAP32 ("xgot", BFD_RELOC_PPC_TOC16), 1653 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER), 1654 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S), 1655 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST), 1656 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S), 1657 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC), 1658 MAP64 ("toc", BFD_RELOC_PPC_TOC16), 1659 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO), 1660 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI), 1661 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA), 1662 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER), 1663 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA), 1664 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST), 1665 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA), 1666 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER), 1667 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA), 1668 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST), 1669 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA), 1670 { (char *) 0, 0, 0, 0, BFD_RELOC_UNUSED } 1671 }; 1672 1673 if (*str++ != '@') 1674 return BFD_RELOC_UNUSED; 1675 1676 for (ch = *str, str2 = ident; 1677 (str2 < ident + sizeof (ident) - 1 1678 && (ISALNUM (ch) || ch == '@')); 1679 ch = *++str) 1680 { 1681 *str2++ = TOLOWER (ch); 1682 } 1683 1684 *str2 = '\0'; 1685 len = str2 - ident; 1686 1687 ch = ident[0]; 1688 for (ptr = &mapping[0]; ptr->length > 0; ptr++) 1689 if (ch == ptr->string[0] 1690 && len == ptr->length 1691 && memcmp (ident, ptr->string, ptr->length) == 0 1692 && (ppc_obj64 ? ptr->valid64 : ptr->valid32)) 1693 { 1694 int reloc = ptr->reloc; 1695 1696 if (!ppc_obj64) 1697 if (exp_p->X_add_number != 0 1698 && (reloc == (int) BFD_RELOC_16_GOTOFF 1699 || reloc == (int) BFD_RELOC_LO16_GOTOFF 1700 || reloc == (int) BFD_RELOC_HI16_GOTOFF 1701 || reloc == (int) BFD_RELOC_HI16_S_GOTOFF)) 1702 as_warn (_("identifier+constant@got means identifier@got+constant")); 1703 1704 /* Now check for identifier@suffix+constant. */ 1705 if (*str == '-' || *str == '+') 1706 { 1707 char *orig_line = input_line_pointer; 1708 expressionS new_exp; 1709 1710 input_line_pointer = str; 1711 expression (&new_exp); 1712 if (new_exp.X_op == O_constant) 1713 { 1714 exp_p->X_add_number += new_exp.X_add_number; 1715 str = input_line_pointer; 1716 } 1717 1718 if (&input_line_pointer != str_p) 1719 input_line_pointer = orig_line; 1720 } 1721 *str_p = str; 1722 1723 if (reloc == (int) BFD_RELOC_PPC64_TOC 1724 && exp_p->X_op == O_symbol 1725 && strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0) 1726 { 1727 /* Change the symbol so that the dummy .TOC. symbol can be 1728 omitted from the object file. */ 1729 exp_p->X_add_symbol = &abs_symbol; 1730 } 1731 1732 return (bfd_reloc_code_real_type) reloc; 1733 } 1734 1735 return BFD_RELOC_UNUSED; 1736} 1737 1738/* Like normal .long/.short/.word, except support @got, etc. 1739 Clobbers input_line_pointer, checks end-of-line. */ 1740static void 1741ppc_elf_cons (int nbytes /* 1=.byte, 2=.word, 4=.long, 8=.llong */) 1742{ 1743 expressionS exp; 1744 bfd_reloc_code_real_type reloc; 1745 1746 if (is_it_end_of_statement ()) 1747 { 1748 demand_empty_rest_of_line (); 1749 return; 1750 } 1751 1752 do 1753 { 1754 expression (&exp); 1755 if (exp.X_op == O_symbol 1756 && *input_line_pointer == '@' 1757 && (reloc = ppc_elf_suffix (&input_line_pointer, 1758 &exp)) != BFD_RELOC_UNUSED) 1759 { 1760 reloc_howto_type *reloc_howto; 1761 int size; 1762 1763 reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc); 1764 size = bfd_get_reloc_size (reloc_howto); 1765 1766 if (size > nbytes) 1767 { 1768 as_bad (_("%s relocations do not fit in %d bytes\n"), 1769 reloc_howto->name, nbytes); 1770 } 1771 else 1772 { 1773 char *p; 1774 int offset; 1775 1776 p = frag_more (nbytes); 1777 offset = 0; 1778 if (target_big_endian) 1779 offset = nbytes - size; 1780 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, 1781 &exp, 0, reloc); 1782 } 1783 } 1784 else 1785 emit_expr (&exp, (unsigned int) nbytes); 1786 } 1787 while (*input_line_pointer++ == ','); 1788 1789 /* Put terminator back into stream. */ 1790 input_line_pointer--; 1791 demand_empty_rest_of_line (); 1792} 1793 1794/* Solaris pseduo op to change to the .rodata section. */ 1795static void 1796ppc_elf_rdata (int xxx) 1797{ 1798 char *save_line = input_line_pointer; 1799 static char section[] = ".rodata\n"; 1800 1801 /* Just pretend this is .section .rodata */ 1802 input_line_pointer = section; 1803 obj_elf_section (xxx); 1804 1805 input_line_pointer = save_line; 1806} 1807 1808/* Pseudo op to make file scope bss items. */ 1809static void 1810ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED) 1811{ 1812 char *name; 1813 char c; 1814 char *p; 1815 offsetT size; 1816 symbolS *symbolP; 1817 offsetT align; 1818 segT old_sec; 1819 int old_subsec; 1820 char *pfrag; 1821 int align2; 1822 1823 name = input_line_pointer; 1824 c = get_symbol_end (); 1825 1826 /* just after name is now '\0'. */ 1827 p = input_line_pointer; 1828 *p = c; 1829 SKIP_WHITESPACE (); 1830 if (*input_line_pointer != ',') 1831 { 1832 as_bad (_("Expected comma after symbol-name: rest of line ignored.")); 1833 ignore_rest_of_line (); 1834 return; 1835 } 1836 1837 input_line_pointer++; /* skip ',' */ 1838 if ((size = get_absolute_expression ()) < 0) 1839 { 1840 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size); 1841 ignore_rest_of_line (); 1842 return; 1843 } 1844 1845 /* The third argument to .lcomm is the alignment. */ 1846 if (*input_line_pointer != ',') 1847 align = 8; 1848 else 1849 { 1850 ++input_line_pointer; 1851 align = get_absolute_expression (); 1852 if (align <= 0) 1853 { 1854 as_warn (_("ignoring bad alignment")); 1855 align = 8; 1856 } 1857 } 1858 1859 *p = 0; 1860 symbolP = symbol_find_or_make (name); 1861 *p = c; 1862 1863 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) 1864 { 1865 as_bad (_("Ignoring attempt to re-define symbol `%s'."), 1866 S_GET_NAME (symbolP)); 1867 ignore_rest_of_line (); 1868 return; 1869 } 1870 1871 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size) 1872 { 1873 as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."), 1874 S_GET_NAME (symbolP), 1875 (long) S_GET_VALUE (symbolP), 1876 (long) size); 1877 1878 ignore_rest_of_line (); 1879 return; 1880 } 1881 1882 /* Allocate_bss. */ 1883 old_sec = now_seg; 1884 old_subsec = now_subseg; 1885 if (align) 1886 { 1887 /* Convert to a power of 2 alignment. */ 1888 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2); 1889 if (align != 1) 1890 { 1891 as_bad (_("Common alignment not a power of 2")); 1892 ignore_rest_of_line (); 1893 return; 1894 } 1895 } 1896 else 1897 align2 = 0; 1898 1899 record_alignment (bss_section, align2); 1900 subseg_set (bss_section, 0); 1901 if (align2) 1902 frag_align (align2, 0, 0); 1903 if (S_GET_SEGMENT (symbolP) == bss_section) 1904 symbol_get_frag (symbolP)->fr_symbol = 0; 1905 symbol_set_frag (symbolP, frag_now); 1906 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size, 1907 (char *) 0); 1908 *pfrag = 0; 1909 S_SET_SIZE (symbolP, size); 1910 S_SET_SEGMENT (symbolP, bss_section); 1911 subseg_set (old_sec, old_subsec); 1912 demand_empty_rest_of_line (); 1913} 1914 1915/* Validate any relocations emitted for -mrelocatable, possibly adding 1916 fixups for word relocations in writable segments, so we can adjust 1917 them at runtime. */ 1918static void 1919ppc_elf_validate_fix (fixS *fixp, segT seg) 1920{ 1921 if (fixp->fx_done || fixp->fx_pcrel) 1922 return; 1923 1924 switch (shlib) 1925 { 1926 case SHLIB_NONE: 1927 case SHLIB_PIC: 1928 return; 1929 1930 case SHLIB_MRELOCATABLE: 1931 if (fixp->fx_r_type <= BFD_RELOC_UNUSED 1932 && fixp->fx_r_type != BFD_RELOC_16_GOTOFF 1933 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF 1934 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF 1935 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF 1936 && fixp->fx_r_type != BFD_RELOC_16_BASEREL 1937 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL 1938 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL 1939 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL 1940 && (seg->flags & SEC_LOAD) != 0 1941 && strcmp (segment_name (seg), ".got2") != 0 1942 && strcmp (segment_name (seg), ".dtors") != 0 1943 && strcmp (segment_name (seg), ".ctors") != 0 1944 && strcmp (segment_name (seg), ".fixup") != 0 1945 && strcmp (segment_name (seg), ".gcc_except_table") != 0 1946 && strcmp (segment_name (seg), ".eh_frame") != 0 1947 && strcmp (segment_name (seg), ".ex_shared") != 0) 1948 { 1949 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0 1950 || fixp->fx_r_type != BFD_RELOC_CTOR) 1951 { 1952 as_bad_where (fixp->fx_file, fixp->fx_line, 1953 _("Relocation cannot be done when using -mrelocatable")); 1954 } 1955 } 1956 return; 1957 } 1958} 1959 1960/* Prevent elf_frob_file_before_adjust removing a weak undefined 1961 function descriptor sym if the corresponding code sym is used. */ 1962 1963void 1964ppc_frob_file_before_adjust (void) 1965{ 1966 symbolS *symp; 1967 asection *toc; 1968 1969 if (!ppc_obj64) 1970 return; 1971 1972 for (symp = symbol_rootP; symp; symp = symbol_next (symp)) 1973 { 1974 const char *name; 1975 char *dotname; 1976 symbolS *dotsym; 1977 size_t len; 1978 1979 name = S_GET_NAME (symp); 1980 if (name[0] == '.') 1981 continue; 1982 1983 if (! S_IS_WEAK (symp) 1984 || S_IS_DEFINED (symp)) 1985 continue; 1986 1987 len = strlen (name) + 1; 1988 dotname = xmalloc (len + 1); 1989 dotname[0] = '.'; 1990 memcpy (dotname + 1, name, len); 1991 dotsym = symbol_find_noref (dotname, 1); 1992 free (dotname); 1993 if (dotsym != NULL && (symbol_used_p (dotsym) 1994 || symbol_used_in_reloc_p (dotsym))) 1995 symbol_mark_used (symp); 1996 1997 } 1998 1999 toc = bfd_get_section_by_name (stdoutput, ".toc"); 2000 if (toc != NULL 2001 && bfd_section_size (stdoutput, toc) > 0x10000) 2002 as_warn (_("TOC section size exceeds 64k")); 2003 2004 /* Don't emit .TOC. symbol. */ 2005 symp = symbol_find (".TOC."); 2006 if (symp != NULL) 2007 symbol_remove (symp, &symbol_rootP, &symbol_lastP); 2008} 2009#endif /* OBJ_ELF */ 2010 2011#ifdef TE_PE 2012 2013/* 2014 * Summary of parse_toc_entry. 2015 * 2016 * in: Input_line_pointer points to the '[' in one of: 2017 * 2018 * [toc] [tocv] [toc32] [toc64] 2019 * 2020 * Anything else is an error of one kind or another. 2021 * 2022 * out: 2023 * return value: success or failure 2024 * toc_kind: kind of toc reference 2025 * input_line_pointer: 2026 * success: first char after the ']' 2027 * failure: unchanged 2028 * 2029 * settings: 2030 * 2031 * [toc] - rv == success, toc_kind = default_toc 2032 * [tocv] - rv == success, toc_kind = data_in_toc 2033 * [toc32] - rv == success, toc_kind = must_be_32 2034 * [toc64] - rv == success, toc_kind = must_be_64 2035 * 2036 */ 2037 2038enum toc_size_qualifier 2039{ 2040 default_toc, /* The toc cell constructed should be the system default size */ 2041 data_in_toc, /* This is a direct reference to a toc cell */ 2042 must_be_32, /* The toc cell constructed must be 32 bits wide */ 2043 must_be_64 /* The toc cell constructed must be 64 bits wide */ 2044}; 2045 2046static int 2047parse_toc_entry (enum toc_size_qualifier *toc_kind) 2048{ 2049 char *start; 2050 char *toc_spec; 2051 char c; 2052 enum toc_size_qualifier t; 2053 2054 /* Save the input_line_pointer. */ 2055 start = input_line_pointer; 2056 2057 /* Skip over the '[' , and whitespace. */ 2058 ++input_line_pointer; 2059 SKIP_WHITESPACE (); 2060 2061 /* Find the spelling of the operand. */ 2062 toc_spec = input_line_pointer; 2063 c = get_symbol_end (); 2064 2065 if (strcmp (toc_spec, "toc") == 0) 2066 { 2067 t = default_toc; 2068 } 2069 else if (strcmp (toc_spec, "tocv") == 0) 2070 { 2071 t = data_in_toc; 2072 } 2073 else if (strcmp (toc_spec, "toc32") == 0) 2074 { 2075 t = must_be_32; 2076 } 2077 else if (strcmp (toc_spec, "toc64") == 0) 2078 { 2079 t = must_be_64; 2080 } 2081 else 2082 { 2083 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec); 2084 *input_line_pointer = c; 2085 input_line_pointer = start; 2086 return 0; 2087 } 2088 2089 /* Now find the ']'. */ 2090 *input_line_pointer = c; 2091 2092 SKIP_WHITESPACE (); /* leading whitespace could be there. */ 2093 c = *input_line_pointer++; /* input_line_pointer->past char in c. */ 2094 2095 if (c != ']') 2096 { 2097 as_bad (_("syntax error: expected `]', found `%c'"), c); 2098 input_line_pointer = start; 2099 return 0; 2100 } 2101 2102 *toc_kind = t; 2103 return 1; 2104} 2105#endif 2106 2107 2108#ifdef OBJ_ELF 2109#define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff)) 2110static void 2111ppc_apuinfo_section_add (unsigned int apu, unsigned int version) 2112{ 2113 unsigned int i; 2114 2115 /* Check we don't already exist. */ 2116 for (i = 0; i < ppc_apuinfo_num; i++) 2117 if (ppc_apuinfo_list[i] == APUID (apu, version)) 2118 return; 2119 2120 if (ppc_apuinfo_num == ppc_apuinfo_num_alloc) 2121 { 2122 if (ppc_apuinfo_num_alloc == 0) 2123 { 2124 ppc_apuinfo_num_alloc = 4; 2125 ppc_apuinfo_list = (unsigned long *) 2126 xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc); 2127 } 2128 else 2129 { 2130 ppc_apuinfo_num_alloc += 4; 2131 ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list, 2132 sizeof (unsigned long) * ppc_apuinfo_num_alloc); 2133 } 2134 } 2135 ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version); 2136} 2137#undef APUID 2138#endif 2139 2140 2141/* We need to keep a list of fixups. We can't simply generate them as 2142 we go, because that would require us to first create the frag, and 2143 that would screw up references to ``.''. */ 2144 2145struct ppc_fixup 2146{ 2147 expressionS exp; 2148 int opindex; 2149 bfd_reloc_code_real_type reloc; 2150}; 2151 2152#define MAX_INSN_FIXUPS (5) 2153 2154/* This routine is called for each instruction to be assembled. */ 2155 2156void 2157md_assemble (char *str) 2158{ 2159 char *s; 2160 const struct powerpc_opcode *opcode; 2161 unsigned long insn; 2162 const unsigned char *opindex_ptr; 2163 int skip_optional; 2164 int need_paren; 2165 int next_opindex; 2166 struct ppc_fixup fixups[MAX_INSN_FIXUPS]; 2167 int fc; 2168 char *f; 2169 int addr_mod; 2170 int i; 2171#ifdef OBJ_ELF 2172 bfd_reloc_code_real_type reloc; 2173#endif 2174 2175 /* Get the opcode. */ 2176 for (s = str; *s != '\0' && ! ISSPACE (*s); s++) 2177 ; 2178 if (*s != '\0') 2179 *s++ = '\0'; 2180 2181 /* Look up the opcode in the hash table. */ 2182 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str); 2183 if (opcode == (const struct powerpc_opcode *) NULL) 2184 { 2185 const struct powerpc_macro *macro; 2186 2187 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str); 2188 if (macro == (const struct powerpc_macro *) NULL) 2189 as_bad (_("Unrecognized opcode: `%s'"), str); 2190 else 2191 ppc_macro (s, macro); 2192 2193 return; 2194 } 2195 2196 insn = opcode->opcode; 2197 2198 str = s; 2199 while (ISSPACE (*str)) 2200 ++str; 2201 2202 /* PowerPC operands are just expressions. The only real issue is 2203 that a few operand types are optional. All cases which might use 2204 an optional operand separate the operands only with commas (in some 2205 cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never 2206 have optional operands). Most instructions with optional operands 2207 have only one. Those that have more than one optional operand can 2208 take either all their operands or none. So, before we start seriously 2209 parsing the operands, we check to see if we have optional operands, 2210 and if we do, we count the number of commas to see which operands 2211 have been omitted. */ 2212 skip_optional = 0; 2213 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) 2214 { 2215 const struct powerpc_operand *operand; 2216 2217 operand = &powerpc_operands[*opindex_ptr]; 2218 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0) 2219 { 2220 unsigned int opcount; 2221 unsigned int num_operands_expected; 2222 unsigned int i; 2223 2224 /* There is an optional operand. Count the number of 2225 commas in the input line. */ 2226 if (*str == '\0') 2227 opcount = 0; 2228 else 2229 { 2230 opcount = 1; 2231 s = str; 2232 while ((s = strchr (s, ',')) != (char *) NULL) 2233 { 2234 ++opcount; 2235 ++s; 2236 } 2237 } 2238 2239 /* Compute the number of expected operands. 2240 Do not count fake operands. */ 2241 for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++) 2242 if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0) 2243 ++ num_operands_expected; 2244 2245 /* If there are fewer operands in the line then are called 2246 for by the instruction, we want to skip the optional 2247 operands. */ 2248 if (opcount < num_operands_expected) 2249 skip_optional = 1; 2250 2251 break; 2252 } 2253 } 2254 2255 /* Gather the operands. */ 2256 need_paren = 0; 2257 next_opindex = 0; 2258 fc = 0; 2259 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) 2260 { 2261 const struct powerpc_operand *operand; 2262 const char *errmsg; 2263 char *hold; 2264 expressionS ex; 2265 char endc; 2266 2267 if (next_opindex == 0) 2268 operand = &powerpc_operands[*opindex_ptr]; 2269 else 2270 { 2271 operand = &powerpc_operands[next_opindex]; 2272 next_opindex = 0; 2273 } 2274 errmsg = NULL; 2275 2276 /* If this is a fake operand, then we do not expect anything 2277 from the input. */ 2278 if ((operand->flags & PPC_OPERAND_FAKE) != 0) 2279 { 2280 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg); 2281 if (errmsg != (const char *) NULL) 2282 as_bad ("%s", errmsg); 2283 continue; 2284 } 2285 2286 /* If this is an optional operand, and we are skipping it, just 2287 insert a zero. */ 2288 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0 2289 && skip_optional) 2290 { 2291 if (operand->insert) 2292 { 2293 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg); 2294 if (errmsg != (const char *) NULL) 2295 as_bad ("%s", errmsg); 2296 } 2297 if ((operand->flags & PPC_OPERAND_NEXT) != 0) 2298 next_opindex = *opindex_ptr + 1; 2299 continue; 2300 } 2301 2302 /* Gather the operand. */ 2303 hold = input_line_pointer; 2304 input_line_pointer = str; 2305 2306#ifdef TE_PE 2307 if (*input_line_pointer == '[') 2308 { 2309 /* We are expecting something like the second argument here: 2310 * 2311 * lwz r4,[toc].GS.0.static_int(rtoc) 2312 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2313 * The argument following the `]' must be a symbol name, and the 2314 * register must be the toc register: 'rtoc' or '2' 2315 * 2316 * The effect is to 0 as the displacement field 2317 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or 2318 * the appropriate variation) reloc against it based on the symbol. 2319 * The linker will build the toc, and insert the resolved toc offset. 2320 * 2321 * Note: 2322 * o The size of the toc entry is currently assumed to be 2323 * 32 bits. This should not be assumed to be a hard coded 2324 * number. 2325 * o In an effort to cope with a change from 32 to 64 bits, 2326 * there are also toc entries that are specified to be 2327 * either 32 or 64 bits: 2328 * lwz r4,[toc32].GS.0.static_int(rtoc) 2329 * lwz r4,[toc64].GS.0.static_int(rtoc) 2330 * These demand toc entries of the specified size, and the 2331 * instruction probably requires it. 2332 */ 2333 2334 int valid_toc; 2335 enum toc_size_qualifier toc_kind; 2336 bfd_reloc_code_real_type toc_reloc; 2337 2338 /* Go parse off the [tocXX] part. */ 2339 valid_toc = parse_toc_entry (&toc_kind); 2340 2341 if (!valid_toc) 2342 { 2343 /* Note: message has already been issued. 2344 FIXME: what sort of recovery should we do? 2345 demand_rest_of_line (); return; ? */ 2346 } 2347 2348 /* Now get the symbol following the ']'. */ 2349 expression (&ex); 2350 2351 switch (toc_kind) 2352 { 2353 case default_toc: 2354 /* In this case, we may not have seen the symbol yet, 2355 since it is allowed to appear on a .extern or .globl 2356 or just be a label in the .data section. */ 2357 toc_reloc = BFD_RELOC_PPC_TOC16; 2358 break; 2359 case data_in_toc: 2360 /* 1. The symbol must be defined and either in the toc 2361 section, or a global. 2362 2. The reloc generated must have the TOCDEFN flag set 2363 in upper bit mess of the reloc type. 2364 FIXME: It's a little confusing what the tocv 2365 qualifier can be used for. At the very least, I've 2366 seen three uses, only one of which I'm sure I can 2367 explain. */ 2368 if (ex.X_op == O_symbol) 2369 { 2370 assert (ex.X_add_symbol != NULL); 2371 if (symbol_get_bfdsym (ex.X_add_symbol)->section 2372 != tocdata_section) 2373 { 2374 as_bad (_("[tocv] symbol is not a toc symbol")); 2375 } 2376 } 2377 2378 toc_reloc = BFD_RELOC_PPC_TOC16; 2379 break; 2380 case must_be_32: 2381 /* FIXME: these next two specifically specify 32/64 bit 2382 toc entries. We don't support them today. Is this 2383 the right way to say that? */ 2384 toc_reloc = BFD_RELOC_UNUSED; 2385 as_bad (_("Unimplemented toc32 expression modifier")); 2386 break; 2387 case must_be_64: 2388 /* FIXME: see above. */ 2389 toc_reloc = BFD_RELOC_UNUSED; 2390 as_bad (_("Unimplemented toc64 expression modifier")); 2391 break; 2392 default: 2393 fprintf (stderr, 2394 _("Unexpected return value [%d] from parse_toc_entry!\n"), 2395 toc_kind); 2396 abort (); 2397 break; 2398 } 2399 2400 /* We need to generate a fixup for this expression. */ 2401 if (fc >= MAX_INSN_FIXUPS) 2402 as_fatal (_("too many fixups")); 2403 2404 fixups[fc].reloc = toc_reloc; 2405 fixups[fc].exp = ex; 2406 fixups[fc].opindex = *opindex_ptr; 2407 ++fc; 2408 2409 /* Ok. We've set up the fixup for the instruction. Now make it 2410 look like the constant 0 was found here. */ 2411 ex.X_unsigned = 1; 2412 ex.X_op = O_constant; 2413 ex.X_add_number = 0; 2414 ex.X_add_symbol = NULL; 2415 ex.X_op_symbol = NULL; 2416 } 2417 2418 else 2419#endif /* TE_PE */ 2420 { 2421 if (! register_name (&ex)) 2422 { 2423 if ((operand->flags & PPC_OPERAND_CR) != 0) 2424 cr_operand = TRUE; 2425 expression (&ex); 2426 cr_operand = FALSE; 2427 } 2428 } 2429 2430 str = input_line_pointer; 2431 input_line_pointer = hold; 2432 2433 if (ex.X_op == O_illegal) 2434 as_bad (_("illegal operand")); 2435 else if (ex.X_op == O_absent) 2436 as_bad (_("missing operand")); 2437 else if (ex.X_op == O_register) 2438 { 2439 insn = ppc_insert_operand (insn, operand, ex.X_add_number, 2440 (char *) NULL, 0); 2441 } 2442 else if (ex.X_op == O_constant) 2443 { 2444#ifdef OBJ_ELF 2445 /* Allow @HA, @L, @H on constants. */ 2446 char *orig_str = str; 2447 2448 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED) 2449 switch (reloc) 2450 { 2451 default: 2452 str = orig_str; 2453 break; 2454 2455 case BFD_RELOC_LO16: 2456 /* X_unsigned is the default, so if the user has done 2457 something which cleared it, we always produce a 2458 signed value. */ 2459 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) 2460 ex.X_add_number &= 0xffff; 2461 else 2462 ex.X_add_number = SEX16 (ex.X_add_number); 2463 break; 2464 2465 case BFD_RELOC_HI16: 2466 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) 2467 ex.X_add_number = PPC_HI (ex.X_add_number); 2468 else 2469 ex.X_add_number = SEX16 (PPC_HI (ex.X_add_number)); 2470 break; 2471 2472 case BFD_RELOC_HI16_S: 2473 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) 2474 ex.X_add_number = PPC_HA (ex.X_add_number); 2475 else 2476 ex.X_add_number = SEX16 (PPC_HA (ex.X_add_number)); 2477 break; 2478 2479 case BFD_RELOC_PPC64_HIGHER: 2480 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) 2481 ex.X_add_number = PPC_HIGHER (ex.X_add_number); 2482 else 2483 ex.X_add_number = SEX16 (PPC_HIGHER (ex.X_add_number)); 2484 break; 2485 2486 case BFD_RELOC_PPC64_HIGHER_S: 2487 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) 2488 ex.X_add_number = PPC_HIGHERA (ex.X_add_number); 2489 else 2490 ex.X_add_number = SEX16 (PPC_HIGHERA (ex.X_add_number)); 2491 break; 2492 2493 case BFD_RELOC_PPC64_HIGHEST: 2494 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) 2495 ex.X_add_number = PPC_HIGHEST (ex.X_add_number); 2496 else 2497 ex.X_add_number = SEX16 (PPC_HIGHEST (ex.X_add_number)); 2498 break; 2499 2500 case BFD_RELOC_PPC64_HIGHEST_S: 2501 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) 2502 ex.X_add_number = PPC_HIGHESTA (ex.X_add_number); 2503 else 2504 ex.X_add_number = SEX16 (PPC_HIGHESTA (ex.X_add_number)); 2505 break; 2506 } 2507#endif /* OBJ_ELF */ 2508 insn = ppc_insert_operand (insn, operand, ex.X_add_number, 2509 (char *) NULL, 0); 2510 } 2511#ifdef OBJ_ELF 2512 else 2513 { 2514 if (ex.X_op == O_symbol && str[0] == '(') 2515 { 2516 const char *sym_name = S_GET_NAME (ex.X_add_symbol); 2517 if (sym_name[0] == '.') 2518 ++sym_name; 2519 2520 if (strcasecmp (sym_name, "__tls_get_addr") == 0) 2521 { 2522 expressionS tls_exp; 2523 2524 hold = input_line_pointer; 2525 input_line_pointer = str + 1; 2526 expression (&tls_exp); 2527 if (tls_exp.X_op == O_symbol) 2528 { 2529 reloc = BFD_RELOC_UNUSED; 2530 if (strncasecmp (input_line_pointer, "@tlsgd)", 7) == 0) 2531 { 2532 reloc = BFD_RELOC_PPC_TLSGD; 2533 input_line_pointer += 7; 2534 } 2535 else if (strncasecmp (input_line_pointer, "@tlsld)", 7) == 0) 2536 { 2537 reloc = BFD_RELOC_PPC_TLSLD; 2538 input_line_pointer += 7; 2539 } 2540 if (reloc != BFD_RELOC_UNUSED) 2541 { 2542 SKIP_WHITESPACE (); 2543 str = input_line_pointer; 2544 2545 if (fc >= MAX_INSN_FIXUPS) 2546 as_fatal (_("too many fixups")); 2547 fixups[fc].exp = tls_exp; 2548 fixups[fc].opindex = *opindex_ptr; 2549 fixups[fc].reloc = reloc; 2550 ++fc; 2551 } 2552 } 2553 input_line_pointer = hold; 2554 } 2555 } 2556 2557 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED) 2558 { 2559 /* Some TLS tweaks. */ 2560 switch (reloc) 2561 { 2562 default: 2563 break; 2564 2565 case BFD_RELOC_PPC_TLS: 2566 insn = ppc_insert_operand (insn, operand, ppc_obj64 ? 13 : 2, 2567 (char *) NULL, 0); 2568 break; 2569 2570 /* We'll only use the 32 (or 64) bit form of these relocations 2571 in constants. Instructions get the 16 bit form. */ 2572 case BFD_RELOC_PPC_DTPREL: 2573 reloc = BFD_RELOC_PPC_DTPREL16; 2574 break; 2575 case BFD_RELOC_PPC_TPREL: 2576 reloc = BFD_RELOC_PPC_TPREL16; 2577 break; 2578 } 2579 2580 /* For the absolute forms of branches, convert the PC 2581 relative form back into the absolute. */ 2582 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0) 2583 { 2584 switch (reloc) 2585 { 2586 case BFD_RELOC_PPC_B26: 2587 reloc = BFD_RELOC_PPC_BA26; 2588 break; 2589 case BFD_RELOC_PPC_B16: 2590 reloc = BFD_RELOC_PPC_BA16; 2591 break; 2592 case BFD_RELOC_PPC_B16_BRTAKEN: 2593 reloc = BFD_RELOC_PPC_BA16_BRTAKEN; 2594 break; 2595 case BFD_RELOC_PPC_B16_BRNTAKEN: 2596 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN; 2597 break; 2598 default: 2599 break; 2600 } 2601 } 2602 2603 if (ppc_obj64 2604 && (operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0) 2605 { 2606 switch (reloc) 2607 { 2608 case BFD_RELOC_16: 2609 reloc = BFD_RELOC_PPC64_ADDR16_DS; 2610 break; 2611 case BFD_RELOC_LO16: 2612 reloc = BFD_RELOC_PPC64_ADDR16_LO_DS; 2613 break; 2614 case BFD_RELOC_16_GOTOFF: 2615 reloc = BFD_RELOC_PPC64_GOT16_DS; 2616 break; 2617 case BFD_RELOC_LO16_GOTOFF: 2618 reloc = BFD_RELOC_PPC64_GOT16_LO_DS; 2619 break; 2620 case BFD_RELOC_LO16_PLTOFF: 2621 reloc = BFD_RELOC_PPC64_PLT16_LO_DS; 2622 break; 2623 case BFD_RELOC_16_BASEREL: 2624 reloc = BFD_RELOC_PPC64_SECTOFF_DS; 2625 break; 2626 case BFD_RELOC_LO16_BASEREL: 2627 reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS; 2628 break; 2629 case BFD_RELOC_PPC_TOC16: 2630 reloc = BFD_RELOC_PPC64_TOC16_DS; 2631 break; 2632 case BFD_RELOC_PPC64_TOC16_LO: 2633 reloc = BFD_RELOC_PPC64_TOC16_LO_DS; 2634 break; 2635 case BFD_RELOC_PPC64_PLTGOT16: 2636 reloc = BFD_RELOC_PPC64_PLTGOT16_DS; 2637 break; 2638 case BFD_RELOC_PPC64_PLTGOT16_LO: 2639 reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS; 2640 break; 2641 case BFD_RELOC_PPC_DTPREL16: 2642 reloc = BFD_RELOC_PPC64_DTPREL16_DS; 2643 break; 2644 case BFD_RELOC_PPC_DTPREL16_LO: 2645 reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS; 2646 break; 2647 case BFD_RELOC_PPC_TPREL16: 2648 reloc = BFD_RELOC_PPC64_TPREL16_DS; 2649 break; 2650 case BFD_RELOC_PPC_TPREL16_LO: 2651 reloc = BFD_RELOC_PPC64_TPREL16_LO_DS; 2652 break; 2653 case BFD_RELOC_PPC_GOT_DTPREL16: 2654 case BFD_RELOC_PPC_GOT_DTPREL16_LO: 2655 case BFD_RELOC_PPC_GOT_TPREL16: 2656 case BFD_RELOC_PPC_GOT_TPREL16_LO: 2657 break; 2658 default: 2659 as_bad (_("unsupported relocation for DS offset field")); 2660 break; 2661 } 2662 } 2663 } 2664 2665 /* We need to generate a fixup for this expression. */ 2666 if (fc >= MAX_INSN_FIXUPS) 2667 as_fatal (_("too many fixups")); 2668 fixups[fc].exp = ex; 2669 fixups[fc].opindex = *opindex_ptr; 2670 fixups[fc].reloc = reloc; 2671 ++fc; 2672 } 2673#else /* OBJ_ELF */ 2674 else 2675 { 2676 /* We need to generate a fixup for this expression. */ 2677 if (fc >= MAX_INSN_FIXUPS) 2678 as_fatal (_("too many fixups")); 2679 fixups[fc].exp = ex; 2680 fixups[fc].opindex = *opindex_ptr; 2681 fixups[fc].reloc = BFD_RELOC_UNUSED; 2682 ++fc; 2683 } 2684#endif /* OBJ_ELF */ 2685 2686 if (need_paren) 2687 { 2688 endc = ')'; 2689 need_paren = 0; 2690 } 2691 else if ((operand->flags & PPC_OPERAND_PARENS) != 0) 2692 { 2693 endc = '('; 2694 need_paren = 1; 2695 } 2696 else 2697 endc = ','; 2698 2699 /* The call to expression should have advanced str past any 2700 whitespace. */ 2701 if (*str != endc 2702 && (endc != ',' || *str != '\0')) 2703 { 2704 as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc); 2705 break; 2706 } 2707 2708 if (*str != '\0') 2709 ++str; 2710 } 2711 2712 while (ISSPACE (*str)) 2713 ++str; 2714 2715 if (*str != '\0') 2716 as_bad (_("junk at end of line: `%s'"), str); 2717 2718#ifdef OBJ_ELF 2719 /* Do we need/want a APUinfo section? */ 2720 if (ppc_cpu & (PPC_OPCODE_SPE 2721 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS 2722 | PPC_OPCODE_BRLOCK | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK 2723 | PPC_OPCODE_RFMCI)) 2724 { 2725 /* These are all version "1". */ 2726 if (opcode->flags & PPC_OPCODE_SPE) 2727 ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1); 2728 if (opcode->flags & PPC_OPCODE_ISEL) 2729 ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1); 2730 if (opcode->flags & PPC_OPCODE_EFS) 2731 ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1); 2732 if (opcode->flags & PPC_OPCODE_BRLOCK) 2733 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1); 2734 if (opcode->flags & PPC_OPCODE_PMR) 2735 ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1); 2736 if (opcode->flags & PPC_OPCODE_CACHELCK) 2737 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1); 2738 if (opcode->flags & PPC_OPCODE_RFMCI) 2739 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1); 2740 } 2741#endif 2742 2743 /* Write out the instruction. */ 2744 f = frag_more (4); 2745 addr_mod = frag_now_fix () & 3; 2746 if (frag_now->has_code && frag_now->insn_addr != addr_mod) 2747 as_bad (_("instruction address is not a multiple of 4")); 2748 frag_now->insn_addr = addr_mod; 2749 frag_now->has_code = 1; 2750 md_number_to_chars (f, insn, 4); 2751 2752#ifdef OBJ_ELF 2753 dwarf2_emit_insn (4); 2754#endif 2755 2756 /* Create any fixups. At this point we do not use a 2757 bfd_reloc_code_real_type, but instead just use the 2758 BFD_RELOC_UNUSED plus the operand index. This lets us easily 2759 handle fixups for any operand type, although that is admittedly 2760 not a very exciting feature. We pick a BFD reloc type in 2761 md_apply_fix. */ 2762 for (i = 0; i < fc; i++) 2763 { 2764 const struct powerpc_operand *operand; 2765 2766 operand = &powerpc_operands[fixups[i].opindex]; 2767 if (fixups[i].reloc != BFD_RELOC_UNUSED) 2768 { 2769 reloc_howto_type *reloc_howto; 2770 int size; 2771 int offset; 2772 fixS *fixP; 2773 2774 reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); 2775 if (!reloc_howto) 2776 abort (); 2777 2778 size = bfd_get_reloc_size (reloc_howto); 2779 offset = target_big_endian ? (4 - size) : 0; 2780 2781 if (size < 1 || size > 4) 2782 abort (); 2783 2784 fixP = fix_new_exp (frag_now, 2785 f - frag_now->fr_literal + offset, 2786 size, 2787 &fixups[i].exp, 2788 reloc_howto->pc_relative, 2789 fixups[i].reloc); 2790 2791 /* Turn off complaints that the addend is too large for things like 2792 foo+100000@ha. */ 2793 switch (fixups[i].reloc) 2794 { 2795 case BFD_RELOC_16_GOTOFF: 2796 case BFD_RELOC_PPC_TOC16: 2797 case BFD_RELOC_LO16: 2798 case BFD_RELOC_HI16: 2799 case BFD_RELOC_HI16_S: 2800#ifdef OBJ_ELF 2801 case BFD_RELOC_PPC64_HIGHER: 2802 case BFD_RELOC_PPC64_HIGHER_S: 2803 case BFD_RELOC_PPC64_HIGHEST: 2804 case BFD_RELOC_PPC64_HIGHEST_S: 2805#endif 2806 fixP->fx_no_overflow = 1; 2807 break; 2808 default: 2809 break; 2810 } 2811 } 2812 else 2813 fix_new_exp (frag_now, 2814 f - frag_now->fr_literal, 2815 4, 2816 &fixups[i].exp, 2817 (operand->flags & PPC_OPERAND_RELATIVE) != 0, 2818 ((bfd_reloc_code_real_type) 2819 (fixups[i].opindex + (int) BFD_RELOC_UNUSED))); 2820 } 2821} 2822 2823/* Handle a macro. Gather all the operands, transform them as 2824 described by the macro, and call md_assemble recursively. All the 2825 operands are separated by commas; we don't accept parentheses 2826 around operands here. */ 2827 2828static void 2829ppc_macro (char *str, const struct powerpc_macro *macro) 2830{ 2831 char *operands[10]; 2832 unsigned int count; 2833 char *s; 2834 unsigned int len; 2835 const char *format; 2836 unsigned int arg; 2837 char *send; 2838 char *complete; 2839 2840 /* Gather the users operands into the operands array. */ 2841 count = 0; 2842 s = str; 2843 while (1) 2844 { 2845 if (count >= sizeof operands / sizeof operands[0]) 2846 break; 2847 operands[count++] = s; 2848 s = strchr (s, ','); 2849 if (s == (char *) NULL) 2850 break; 2851 *s++ = '\0'; 2852 } 2853 2854 if (count != macro->operands) 2855 { 2856 as_bad (_("wrong number of operands")); 2857 return; 2858 } 2859 2860 /* Work out how large the string must be (the size is unbounded 2861 because it includes user input). */ 2862 len = 0; 2863 format = macro->format; 2864 while (*format != '\0') 2865 { 2866 if (*format != '%') 2867 { 2868 ++len; 2869 ++format; 2870 } 2871 else 2872 { 2873 arg = strtol (format + 1, &send, 10); 2874 know (send != format && arg < count); 2875 len += strlen (operands[arg]); 2876 format = send; 2877 } 2878 } 2879 2880 /* Put the string together. */ 2881 complete = s = (char *) alloca (len + 1); 2882 format = macro->format; 2883 while (*format != '\0') 2884 { 2885 if (*format != '%') 2886 *s++ = *format++; 2887 else 2888 { 2889 arg = strtol (format + 1, &send, 10); 2890 strcpy (s, operands[arg]); 2891 s += strlen (s); 2892 format = send; 2893 } 2894 } 2895 *s = '\0'; 2896 2897 /* Assemble the constructed instruction. */ 2898 md_assemble (complete); 2899} 2900 2901#ifdef OBJ_ELF 2902/* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED. */ 2903 2904int 2905ppc_section_letter (int letter, char **ptr_msg) 2906{ 2907 if (letter == 'e') 2908 return SHF_EXCLUDE; 2909 2910 *ptr_msg = _("Bad .section directive: want a,e,w,x,M,S,G,T in string"); 2911 return -1; 2912} 2913 2914int 2915ppc_section_word (char *str, size_t len) 2916{ 2917 if (len == 7 && strncmp (str, "exclude", 7) == 0) 2918 return SHF_EXCLUDE; 2919 2920 return -1; 2921} 2922 2923int 2924ppc_section_type (char *str, size_t len) 2925{ 2926 if (len == 7 && strncmp (str, "ordered", 7) == 0) 2927 return SHT_ORDERED; 2928 2929 return -1; 2930} 2931 2932int 2933ppc_section_flags (int flags, int attr, int type) 2934{ 2935 if (type == SHT_ORDERED) 2936 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES; 2937 2938 if (attr & SHF_EXCLUDE) 2939 flags |= SEC_EXCLUDE; 2940 2941 return flags; 2942} 2943#endif /* OBJ_ELF */ 2944 2945 2946/* Pseudo-op handling. */ 2947 2948/* The .byte pseudo-op. This is similar to the normal .byte 2949 pseudo-op, but it can also take a single ASCII string. */ 2950 2951static void 2952ppc_byte (int ignore ATTRIBUTE_UNUSED) 2953{ 2954 if (*input_line_pointer != '\"') 2955 { 2956 cons (1); 2957 return; 2958 } 2959 2960 /* Gather characters. A real double quote is doubled. Unusual 2961 characters are not permitted. */ 2962 ++input_line_pointer; 2963 while (1) 2964 { 2965 char c; 2966 2967 c = *input_line_pointer++; 2968 2969 if (c == '\"') 2970 { 2971 if (*input_line_pointer != '\"') 2972 break; 2973 ++input_line_pointer; 2974 } 2975 2976 FRAG_APPEND_1_CHAR (c); 2977 } 2978 2979 demand_empty_rest_of_line (); 2980} 2981 2982#ifdef OBJ_XCOFF 2983 2984/* XCOFF specific pseudo-op handling. */ 2985 2986/* This is set if we are creating a .stabx symbol, since we don't want 2987 to handle symbol suffixes for such symbols. */ 2988static bfd_boolean ppc_stab_symbol; 2989 2990/* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common 2991 symbols in the .bss segment as though they were local common 2992 symbols, and uses a different smclas. The native Aix 4.3.3 assembler 2993 aligns .comm and .lcomm to 4 bytes. */ 2994 2995static void 2996ppc_comm (int lcomm) 2997{ 2998 asection *current_seg = now_seg; 2999 subsegT current_subseg = now_subseg; 3000 char *name; 3001 char endc; 3002 char *end_name; 3003 offsetT size; 3004 offsetT align; 3005 symbolS *lcomm_sym = NULL; 3006 symbolS *sym; 3007 char *pfrag; 3008 3009 name = input_line_pointer; 3010 endc = get_symbol_end (); 3011 end_name = input_line_pointer; 3012 *end_name = endc; 3013 3014 if (*input_line_pointer != ',') 3015 { 3016 as_bad (_("missing size")); 3017 ignore_rest_of_line (); 3018 return; 3019 } 3020 ++input_line_pointer; 3021 3022 size = get_absolute_expression (); 3023 if (size < 0) 3024 { 3025 as_bad (_("negative size")); 3026 ignore_rest_of_line (); 3027 return; 3028 } 3029 3030 if (! lcomm) 3031 { 3032 /* The third argument to .comm is the alignment. */ 3033 if (*input_line_pointer != ',') 3034 align = 2; 3035 else 3036 { 3037 ++input_line_pointer; 3038 align = get_absolute_expression (); 3039 if (align <= 0) 3040 { 3041 as_warn (_("ignoring bad alignment")); 3042 align = 2; 3043 } 3044 } 3045 } 3046 else 3047 { 3048 char *lcomm_name; 3049 char lcomm_endc; 3050 3051 if (size <= 4) 3052 align = 2; 3053 else 3054 align = 3; 3055 3056 /* The third argument to .lcomm appears to be the real local 3057 common symbol to create. References to the symbol named in 3058 the first argument are turned into references to the third 3059 argument. */ 3060 if (*input_line_pointer != ',') 3061 { 3062 as_bad (_("missing real symbol name")); 3063 ignore_rest_of_line (); 3064 return; 3065 } 3066 ++input_line_pointer; 3067 3068 lcomm_name = input_line_pointer; 3069 lcomm_endc = get_symbol_end (); 3070 3071 lcomm_sym = symbol_find_or_make (lcomm_name); 3072 3073 *input_line_pointer = lcomm_endc; 3074 } 3075 3076 *end_name = '\0'; 3077 sym = symbol_find_or_make (name); 3078 *end_name = endc; 3079 3080 if (S_IS_DEFINED (sym) 3081 || S_GET_VALUE (sym) != 0) 3082 { 3083 as_bad (_("attempt to redefine symbol")); 3084 ignore_rest_of_line (); 3085 return; 3086 } 3087 3088 record_alignment (bss_section, align); 3089 3090 if (! lcomm 3091 || ! S_IS_DEFINED (lcomm_sym)) 3092 { 3093 symbolS *def_sym; 3094 offsetT def_size; 3095 3096 if (! lcomm) 3097 { 3098 def_sym = sym; 3099 def_size = size; 3100 S_SET_EXTERNAL (sym); 3101 } 3102 else 3103 { 3104 symbol_get_tc (lcomm_sym)->output = 1; 3105 def_sym = lcomm_sym; 3106 def_size = 0; 3107 } 3108 3109 subseg_set (bss_section, 1); 3110 frag_align (align, 0, 0); 3111 3112 symbol_set_frag (def_sym, frag_now); 3113 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym, 3114 def_size, (char *) NULL); 3115 *pfrag = 0; 3116 S_SET_SEGMENT (def_sym, bss_section); 3117 symbol_get_tc (def_sym)->align = align; 3118 } 3119 else if (lcomm) 3120 { 3121 /* Align the size of lcomm_sym. */ 3122 symbol_get_frag (lcomm_sym)->fr_offset = 3123 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1) 3124 &~ ((1 << align) - 1)); 3125 if (align > symbol_get_tc (lcomm_sym)->align) 3126 symbol_get_tc (lcomm_sym)->align = align; 3127 } 3128 3129 if (lcomm) 3130 { 3131 /* Make sym an offset from lcomm_sym. */ 3132 S_SET_SEGMENT (sym, bss_section); 3133 symbol_set_frag (sym, symbol_get_frag (lcomm_sym)); 3134 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset); 3135 symbol_get_frag (lcomm_sym)->fr_offset += size; 3136 } 3137 3138 subseg_set (current_seg, current_subseg); 3139 3140 demand_empty_rest_of_line (); 3141} 3142 3143/* The .csect pseudo-op. This switches us into a different 3144 subsegment. The first argument is a symbol whose value is the 3145 start of the .csect. In COFF, csect symbols get special aux 3146 entries defined by the x_csect field of union internal_auxent. The 3147 optional second argument is the alignment (the default is 2). */ 3148 3149static void 3150ppc_csect (int ignore ATTRIBUTE_UNUSED) 3151{ 3152 char *name; 3153 char endc; 3154 symbolS *sym; 3155 offsetT align; 3156 3157 name = input_line_pointer; 3158 endc = get_symbol_end (); 3159 3160 sym = symbol_find_or_make (name); 3161 3162 *input_line_pointer = endc; 3163 3164 if (S_GET_NAME (sym)[0] == '\0') 3165 { 3166 /* An unnamed csect is assumed to be [PR]. */ 3167 symbol_get_tc (sym)->class = XMC_PR; 3168 } 3169 3170 align = 2; 3171 if (*input_line_pointer == ',') 3172 { 3173 ++input_line_pointer; 3174 align = get_absolute_expression (); 3175 } 3176 3177 ppc_change_csect (sym, align); 3178 3179 demand_empty_rest_of_line (); 3180} 3181 3182/* Change to a different csect. */ 3183 3184static void 3185ppc_change_csect (symbolS *sym, offsetT align) 3186{ 3187 if (S_IS_DEFINED (sym)) 3188 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg); 3189 else 3190 { 3191 symbolS **list_ptr; 3192 int after_toc; 3193 int hold_chunksize; 3194 symbolS *list; 3195 int is_code; 3196 segT sec; 3197 3198 /* This is a new csect. We need to look at the symbol class to 3199 figure out whether it should go in the text section or the 3200 data section. */ 3201 after_toc = 0; 3202 is_code = 0; 3203 switch (symbol_get_tc (sym)->class) 3204 { 3205 case XMC_PR: 3206 case XMC_RO: 3207 case XMC_DB: 3208 case XMC_GL: 3209 case XMC_XO: 3210 case XMC_SV: 3211 case XMC_TI: 3212 case XMC_TB: 3213 S_SET_SEGMENT (sym, text_section); 3214 symbol_get_tc (sym)->subseg = ppc_text_subsegment; 3215 ++ppc_text_subsegment; 3216 list_ptr = &ppc_text_csects; 3217 is_code = 1; 3218 break; 3219 case XMC_RW: 3220 case XMC_TC0: 3221 case XMC_TC: 3222 case XMC_DS: 3223 case XMC_UA: 3224 case XMC_BS: 3225 case XMC_UC: 3226 if (ppc_toc_csect != NULL 3227 && (symbol_get_tc (ppc_toc_csect)->subseg + 1 3228 == ppc_data_subsegment)) 3229 after_toc = 1; 3230 S_SET_SEGMENT (sym, data_section); 3231 symbol_get_tc (sym)->subseg = ppc_data_subsegment; 3232 ++ppc_data_subsegment; 3233 list_ptr = &ppc_data_csects; 3234 break; 3235 default: 3236 abort (); 3237 } 3238 3239 /* We set the obstack chunk size to a small value before 3240 changing subsegments, so that we don't use a lot of memory 3241 space for what may be a small section. */ 3242 hold_chunksize = chunksize; 3243 chunksize = 64; 3244 3245 sec = subseg_new (segment_name (S_GET_SEGMENT (sym)), 3246 symbol_get_tc (sym)->subseg); 3247 3248 chunksize = hold_chunksize; 3249 3250 if (after_toc) 3251 ppc_after_toc_frag = frag_now; 3252 3253 record_alignment (sec, align); 3254 if (is_code) 3255 frag_align_code (align, 0); 3256 else 3257 frag_align (align, 0, 0); 3258 3259 symbol_set_frag (sym, frag_now); 3260 S_SET_VALUE (sym, (valueT) frag_now_fix ()); 3261 3262 symbol_get_tc (sym)->align = align; 3263 symbol_get_tc (sym)->output = 1; 3264 symbol_get_tc (sym)->within = sym; 3265 3266 for (list = *list_ptr; 3267 symbol_get_tc (list)->next != (symbolS *) NULL; 3268 list = symbol_get_tc (list)->next) 3269 ; 3270 symbol_get_tc (list)->next = sym; 3271 3272 symbol_remove (sym, &symbol_rootP, &symbol_lastP); 3273 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP, 3274 &symbol_lastP); 3275 } 3276 3277 ppc_current_csect = sym; 3278} 3279 3280/* This function handles the .text and .data pseudo-ops. These 3281 pseudo-ops aren't really used by XCOFF; we implement them for the 3282 convenience of people who aren't used to XCOFF. */ 3283 3284static void 3285ppc_section (int type) 3286{ 3287 const char *name; 3288 symbolS *sym; 3289 3290 if (type == 't') 3291 name = ".text[PR]"; 3292 else if (type == 'd') 3293 name = ".data[RW]"; 3294 else 3295 abort (); 3296 3297 sym = symbol_find_or_make (name); 3298 3299 ppc_change_csect (sym, 2); 3300 3301 demand_empty_rest_of_line (); 3302} 3303 3304/* This function handles the .section pseudo-op. This is mostly to 3305 give an error, since XCOFF only supports .text, .data and .bss, but 3306 we do permit the user to name the text or data section. */ 3307 3308static void 3309ppc_named_section (int ignore ATTRIBUTE_UNUSED) 3310{ 3311 char *user_name; 3312 const char *real_name; 3313 char c; 3314 symbolS *sym; 3315 3316 user_name = input_line_pointer; 3317 c = get_symbol_end (); 3318 3319 if (strcmp (user_name, ".text") == 0) 3320 real_name = ".text[PR]"; 3321 else if (strcmp (user_name, ".data") == 0) 3322 real_name = ".data[RW]"; 3323 else 3324 { 3325 as_bad (_("The XCOFF file format does not support arbitrary sections")); 3326 *input_line_pointer = c; 3327 ignore_rest_of_line (); 3328 return; 3329 } 3330 3331 *input_line_pointer = c; 3332 3333 sym = symbol_find_or_make (real_name); 3334 3335 ppc_change_csect (sym, 2); 3336 3337 demand_empty_rest_of_line (); 3338} 3339 3340/* The .extern pseudo-op. We create an undefined symbol. */ 3341 3342static void 3343ppc_extern (int ignore ATTRIBUTE_UNUSED) 3344{ 3345 char *name; 3346 char endc; 3347 3348 name = input_line_pointer; 3349 endc = get_symbol_end (); 3350 3351 (void) symbol_find_or_make (name); 3352 3353 *input_line_pointer = endc; 3354 3355 demand_empty_rest_of_line (); 3356} 3357 3358/* The .lglobl pseudo-op. Keep the symbol in the symbol table. */ 3359 3360static void 3361ppc_lglobl (int ignore ATTRIBUTE_UNUSED) 3362{ 3363 char *name; 3364 char endc; 3365 symbolS *sym; 3366 3367 name = input_line_pointer; 3368 endc = get_symbol_end (); 3369 3370 sym = symbol_find_or_make (name); 3371 3372 *input_line_pointer = endc; 3373 3374 symbol_get_tc (sym)->output = 1; 3375 3376 demand_empty_rest_of_line (); 3377} 3378 3379/* The .rename pseudo-op. The RS/6000 assembler can rename symbols, 3380 although I don't know why it bothers. */ 3381 3382static void 3383ppc_rename (int ignore ATTRIBUTE_UNUSED) 3384{ 3385 char *name; 3386 char endc; 3387 symbolS *sym; 3388 int len; 3389 3390 name = input_line_pointer; 3391 endc = get_symbol_end (); 3392 3393 sym = symbol_find_or_make (name); 3394 3395 *input_line_pointer = endc; 3396 3397 if (*input_line_pointer != ',') 3398 { 3399 as_bad (_("missing rename string")); 3400 ignore_rest_of_line (); 3401 return; 3402 } 3403 ++input_line_pointer; 3404 3405 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len); 3406 3407 demand_empty_rest_of_line (); 3408} 3409 3410/* The .stabx pseudo-op. This is similar to a normal .stabs 3411 pseudo-op, but slightly different. A sample is 3412 .stabx "main:F-1",.main,142,0 3413 The first argument is the symbol name to create. The second is the 3414 value, and the third is the storage class. The fourth seems to be 3415 always zero, and I am assuming it is the type. */ 3416 3417static void 3418ppc_stabx (int ignore ATTRIBUTE_UNUSED) 3419{ 3420 char *name; 3421 int len; 3422 symbolS *sym; 3423 expressionS exp; 3424 3425 name = demand_copy_C_string (&len); 3426 3427 if (*input_line_pointer != ',') 3428 { 3429 as_bad (_("missing value")); 3430 return; 3431 } 3432 ++input_line_pointer; 3433 3434 ppc_stab_symbol = TRUE; 3435 sym = symbol_make (name); 3436 ppc_stab_symbol = FALSE; 3437 3438 symbol_get_tc (sym)->real_name = name; 3439 3440 (void) expression (&exp); 3441 3442 switch (exp.X_op) 3443 { 3444 case O_illegal: 3445 case O_absent: 3446 case O_big: 3447 as_bad (_("illegal .stabx expression; zero assumed")); 3448 exp.X_add_number = 0; 3449 /* Fall through. */ 3450 case O_constant: 3451 S_SET_VALUE (sym, (valueT) exp.X_add_number); 3452 symbol_set_frag (sym, &zero_address_frag); 3453 break; 3454 3455 case O_symbol: 3456 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section) 3457 symbol_set_value_expression (sym, &exp); 3458 else 3459 { 3460 S_SET_VALUE (sym, 3461 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol)); 3462 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol)); 3463 } 3464 break; 3465 3466 default: 3467 /* The value is some complex expression. This will probably 3468 fail at some later point, but this is probably the right 3469 thing to do here. */ 3470 symbol_set_value_expression (sym, &exp); 3471 break; 3472 } 3473 3474 S_SET_SEGMENT (sym, ppc_coff_debug_section); 3475 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; 3476 3477 if (*input_line_pointer != ',') 3478 { 3479 as_bad (_("missing class")); 3480 return; 3481 } 3482 ++input_line_pointer; 3483 3484 S_SET_STORAGE_CLASS (sym, get_absolute_expression ()); 3485 3486 if (*input_line_pointer != ',') 3487 { 3488 as_bad (_("missing type")); 3489 return; 3490 } 3491 ++input_line_pointer; 3492 3493 S_SET_DATA_TYPE (sym, get_absolute_expression ()); 3494 3495 symbol_get_tc (sym)->output = 1; 3496 3497 if (S_GET_STORAGE_CLASS (sym) == C_STSYM) { 3498 3499 symbol_get_tc (sym)->within = ppc_current_block; 3500 3501 /* In this case : 3502 3503 .bs name 3504 .stabx "z",arrays_,133,0 3505 .es 3506 3507 .comm arrays_,13768,3 3508 3509 resolve_symbol_value will copy the exp's "within" into sym's when the 3510 offset is 0. Since this seems to be corner case problem, 3511 only do the correction for storage class C_STSYM. A better solution 3512 would be to have the tc field updated in ppc_symbol_new_hook. */ 3513 3514 if (exp.X_op == O_symbol) 3515 { 3516 symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block; 3517 } 3518 } 3519 3520 if (exp.X_op != O_symbol 3521 || ! S_IS_EXTERNAL (exp.X_add_symbol) 3522 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section) 3523 ppc_frob_label (sym); 3524 else 3525 { 3526 symbol_remove (sym, &symbol_rootP, &symbol_lastP); 3527 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP); 3528 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol) 3529 symbol_get_tc (ppc_current_csect)->within = sym; 3530 } 3531 3532 demand_empty_rest_of_line (); 3533} 3534 3535/* The .function pseudo-op. This takes several arguments. The first 3536 argument seems to be the external name of the symbol. The second 3537 argument seems to be the label for the start of the function. gcc 3538 uses the same name for both. I have no idea what the third and 3539 fourth arguments are meant to be. The optional fifth argument is 3540 an expression for the size of the function. In COFF this symbol 3541 gets an aux entry like that used for a csect. */ 3542 3543static void 3544ppc_function (int ignore ATTRIBUTE_UNUSED) 3545{ 3546 char *name; 3547 char endc; 3548 char *s; 3549 symbolS *ext_sym; 3550 symbolS *lab_sym; 3551 3552 name = input_line_pointer; 3553 endc = get_symbol_end (); 3554 3555 /* Ignore any [PR] suffix. */ 3556 name = ppc_canonicalize_symbol_name (name); 3557 s = strchr (name, '['); 3558 if (s != (char *) NULL 3559 && strcmp (s + 1, "PR]") == 0) 3560 *s = '\0'; 3561 3562 ext_sym = symbol_find_or_make (name); 3563 3564 *input_line_pointer = endc; 3565 3566 if (*input_line_pointer != ',') 3567 { 3568 as_bad (_("missing symbol name")); 3569 ignore_rest_of_line (); 3570 return; 3571 } 3572 ++input_line_pointer; 3573 3574 name = input_line_pointer; 3575 endc = get_symbol_end (); 3576 3577 lab_sym = symbol_find_or_make (name); 3578 3579 *input_line_pointer = endc; 3580 3581 if (ext_sym != lab_sym) 3582 { 3583 expressionS exp; 3584 3585 exp.X_op = O_symbol; 3586 exp.X_add_symbol = lab_sym; 3587 exp.X_op_symbol = NULL; 3588 exp.X_add_number = 0; 3589 exp.X_unsigned = 0; 3590 symbol_set_value_expression (ext_sym, &exp); 3591 } 3592 3593 if (symbol_get_tc (ext_sym)->class == -1) 3594 symbol_get_tc (ext_sym)->class = XMC_PR; 3595 symbol_get_tc (ext_sym)->output = 1; 3596 3597 if (*input_line_pointer == ',') 3598 { 3599 expressionS ignore; 3600 3601 /* Ignore the third argument. */ 3602 ++input_line_pointer; 3603 expression (&ignore); 3604 if (*input_line_pointer == ',') 3605 { 3606 /* Ignore the fourth argument. */ 3607 ++input_line_pointer; 3608 expression (&ignore); 3609 if (*input_line_pointer == ',') 3610 { 3611 /* The fifth argument is the function size. */ 3612 ++input_line_pointer; 3613 symbol_get_tc (ext_sym)->size = symbol_new ("L0\001", 3614 absolute_section, 3615 (valueT) 0, 3616 &zero_address_frag); 3617 pseudo_set (symbol_get_tc (ext_sym)->size); 3618 } 3619 } 3620 } 3621 3622 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); 3623 SF_SET_FUNCTION (ext_sym); 3624 SF_SET_PROCESS (ext_sym); 3625 coff_add_linesym (ext_sym); 3626 3627 demand_empty_rest_of_line (); 3628} 3629 3630/* The .bf pseudo-op. This is just like a COFF C_FCN symbol named 3631 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym 3632 with the correct line number */ 3633 3634static symbolS *saved_bi_sym = 0; 3635 3636static void 3637ppc_bf (int ignore ATTRIBUTE_UNUSED) 3638{ 3639 symbolS *sym; 3640 3641 sym = symbol_make (".bf"); 3642 S_SET_SEGMENT (sym, text_section); 3643 symbol_set_frag (sym, frag_now); 3644 S_SET_VALUE (sym, frag_now_fix ()); 3645 S_SET_STORAGE_CLASS (sym, C_FCN); 3646 3647 coff_line_base = get_absolute_expression (); 3648 3649 S_SET_NUMBER_AUXILIARY (sym, 1); 3650 SA_SET_SYM_LNNO (sym, coff_line_base); 3651 3652 /* Line number for bi. */ 3653 if (saved_bi_sym) 3654 { 3655 S_SET_VALUE (saved_bi_sym, coff_n_line_nos); 3656 saved_bi_sym = 0; 3657 } 3658 3659 3660 symbol_get_tc (sym)->output = 1; 3661 3662 ppc_frob_label (sym); 3663 3664 demand_empty_rest_of_line (); 3665} 3666 3667/* The .ef pseudo-op. This is just like a COFF C_FCN symbol named 3668 ".ef", except that the line number is absolute, not relative to the 3669 most recent ".bf" symbol. */ 3670 3671static void 3672ppc_ef (int ignore ATTRIBUTE_UNUSED) 3673{ 3674 symbolS *sym; 3675 3676 sym = symbol_make (".ef"); 3677 S_SET_SEGMENT (sym, text_section); 3678 symbol_set_frag (sym, frag_now); 3679 S_SET_VALUE (sym, frag_now_fix ()); 3680 S_SET_STORAGE_CLASS (sym, C_FCN); 3681 S_SET_NUMBER_AUXILIARY (sym, 1); 3682 SA_SET_SYM_LNNO (sym, get_absolute_expression ()); 3683 symbol_get_tc (sym)->output = 1; 3684 3685 ppc_frob_label (sym); 3686 3687 demand_empty_rest_of_line (); 3688} 3689 3690/* The .bi and .ei pseudo-ops. These take a string argument and 3691 generates a C_BINCL or C_EINCL symbol, which goes at the start of 3692 the symbol list. The value of .bi will be know when the next .bf 3693 is encountered. */ 3694 3695static void 3696ppc_biei (int ei) 3697{ 3698 static symbolS *last_biei; 3699 3700 char *name; 3701 int len; 3702 symbolS *sym; 3703 symbolS *look; 3704 3705 name = demand_copy_C_string (&len); 3706 3707 /* The value of these symbols is actually file offset. Here we set 3708 the value to the index into the line number entries. In 3709 ppc_frob_symbols we set the fix_line field, which will cause BFD 3710 to do the right thing. */ 3711 3712 sym = symbol_make (name); 3713 /* obj-coff.c currently only handles line numbers correctly in the 3714 .text section. */ 3715 S_SET_SEGMENT (sym, text_section); 3716 S_SET_VALUE (sym, coff_n_line_nos); 3717 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; 3718 3719 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL); 3720 symbol_get_tc (sym)->output = 1; 3721 3722 /* Save bi. */ 3723 if (ei) 3724 saved_bi_sym = 0; 3725 else 3726 saved_bi_sym = sym; 3727 3728 for (look = last_biei ? last_biei : symbol_rootP; 3729 (look != (symbolS *) NULL 3730 && (S_GET_STORAGE_CLASS (look) == C_FILE 3731 || S_GET_STORAGE_CLASS (look) == C_BINCL 3732 || S_GET_STORAGE_CLASS (look) == C_EINCL)); 3733 look = symbol_next (look)) 3734 ; 3735 if (look != (symbolS *) NULL) 3736 { 3737 symbol_remove (sym, &symbol_rootP, &symbol_lastP); 3738 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP); 3739 last_biei = sym; 3740 } 3741 3742 demand_empty_rest_of_line (); 3743} 3744 3745/* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs". 3746 There is one argument, which is a csect symbol. The value of the 3747 .bs symbol is the index of this csect symbol. */ 3748 3749static void 3750ppc_bs (int ignore ATTRIBUTE_UNUSED) 3751{ 3752 char *name; 3753 char endc; 3754 symbolS *csect; 3755 symbolS *sym; 3756 3757 if (ppc_current_block != NULL) 3758 as_bad (_("nested .bs blocks")); 3759 3760 name = input_line_pointer; 3761 endc = get_symbol_end (); 3762 3763 csect = symbol_find_or_make (name); 3764 3765 *input_line_pointer = endc; 3766 3767 sym = symbol_make (".bs"); 3768 S_SET_SEGMENT (sym, now_seg); 3769 S_SET_STORAGE_CLASS (sym, C_BSTAT); 3770 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; 3771 symbol_get_tc (sym)->output = 1; 3772 3773 symbol_get_tc (sym)->within = csect; 3774 3775 ppc_frob_label (sym); 3776 3777 ppc_current_block = sym; 3778 3779 demand_empty_rest_of_line (); 3780} 3781 3782/* The .es pseudo-op. Generate a C_ESTART symbol named .es. */ 3783 3784static void 3785ppc_es (int ignore ATTRIBUTE_UNUSED) 3786{ 3787 symbolS *sym; 3788 3789 if (ppc_current_block == NULL) 3790 as_bad (_(".es without preceding .bs")); 3791 3792 sym = symbol_make (".es"); 3793 S_SET_SEGMENT (sym, now_seg); 3794 S_SET_STORAGE_CLASS (sym, C_ESTAT); 3795 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; 3796 symbol_get_tc (sym)->output = 1; 3797 3798 ppc_frob_label (sym); 3799 3800 ppc_current_block = NULL; 3801 3802 demand_empty_rest_of_line (); 3803} 3804 3805/* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a 3806 line number. */ 3807 3808static void 3809ppc_bb (int ignore ATTRIBUTE_UNUSED) 3810{ 3811 symbolS *sym; 3812 3813 sym = symbol_make (".bb"); 3814 S_SET_SEGMENT (sym, text_section); 3815 symbol_set_frag (sym, frag_now); 3816 S_SET_VALUE (sym, frag_now_fix ()); 3817 S_SET_STORAGE_CLASS (sym, C_BLOCK); 3818 3819 S_SET_NUMBER_AUXILIARY (sym, 1); 3820 SA_SET_SYM_LNNO (sym, get_absolute_expression ()); 3821 3822 symbol_get_tc (sym)->output = 1; 3823 3824 SF_SET_PROCESS (sym); 3825 3826 ppc_frob_label (sym); 3827 3828 demand_empty_rest_of_line (); 3829} 3830 3831/* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a 3832 line number. */ 3833 3834static void 3835ppc_eb (int ignore ATTRIBUTE_UNUSED) 3836{ 3837 symbolS *sym; 3838 3839 sym = symbol_make (".eb"); 3840 S_SET_SEGMENT (sym, text_section); 3841 symbol_set_frag (sym, frag_now); 3842 S_SET_VALUE (sym, frag_now_fix ()); 3843 S_SET_STORAGE_CLASS (sym, C_BLOCK); 3844 S_SET_NUMBER_AUXILIARY (sym, 1); 3845 SA_SET_SYM_LNNO (sym, get_absolute_expression ()); 3846 symbol_get_tc (sym)->output = 1; 3847 3848 SF_SET_PROCESS (sym); 3849 3850 ppc_frob_label (sym); 3851 3852 demand_empty_rest_of_line (); 3853} 3854 3855/* The .bc pseudo-op. This just creates a C_BCOMM symbol with a 3856 specified name. */ 3857 3858static void 3859ppc_bc (int ignore ATTRIBUTE_UNUSED) 3860{ 3861 char *name; 3862 int len; 3863 symbolS *sym; 3864 3865 name = demand_copy_C_string (&len); 3866 sym = symbol_make (name); 3867 S_SET_SEGMENT (sym, ppc_coff_debug_section); 3868 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; 3869 S_SET_STORAGE_CLASS (sym, C_BCOMM); 3870 S_SET_VALUE (sym, 0); 3871 symbol_get_tc (sym)->output = 1; 3872 3873 ppc_frob_label (sym); 3874 3875 demand_empty_rest_of_line (); 3876} 3877 3878/* The .ec pseudo-op. This just creates a C_ECOMM symbol. */ 3879 3880static void 3881ppc_ec (int ignore ATTRIBUTE_UNUSED) 3882{ 3883 symbolS *sym; 3884 3885 sym = symbol_make (".ec"); 3886 S_SET_SEGMENT (sym, ppc_coff_debug_section); 3887 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; 3888 S_SET_STORAGE_CLASS (sym, C_ECOMM); 3889 S_SET_VALUE (sym, 0); 3890 symbol_get_tc (sym)->output = 1; 3891 3892 ppc_frob_label (sym); 3893 3894 demand_empty_rest_of_line (); 3895} 3896 3897/* The .toc pseudo-op. Switch to the .toc subsegment. */ 3898 3899static void 3900ppc_toc (int ignore ATTRIBUTE_UNUSED) 3901{ 3902 if (ppc_toc_csect != (symbolS *) NULL) 3903 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg); 3904 else 3905 { 3906 subsegT subseg; 3907 symbolS *sym; 3908 symbolS *list; 3909 3910 subseg = ppc_data_subsegment; 3911 ++ppc_data_subsegment; 3912 3913 subseg_new (segment_name (data_section), subseg); 3914 ppc_toc_frag = frag_now; 3915 3916 sym = symbol_find_or_make ("TOC[TC0]"); 3917 symbol_set_frag (sym, frag_now); 3918 S_SET_SEGMENT (sym, data_section); 3919 S_SET_VALUE (sym, (valueT) frag_now_fix ()); 3920 symbol_get_tc (sym)->subseg = subseg; 3921 symbol_get_tc (sym)->output = 1; 3922 symbol_get_tc (sym)->within = sym; 3923 3924 ppc_toc_csect = sym; 3925 3926 for (list = ppc_data_csects; 3927 symbol_get_tc (list)->next != (symbolS *) NULL; 3928 list = symbol_get_tc (list)->next) 3929 ; 3930 symbol_get_tc (list)->next = sym; 3931 3932 symbol_remove (sym, &symbol_rootP, &symbol_lastP); 3933 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP, 3934 &symbol_lastP); 3935 } 3936 3937 ppc_current_csect = ppc_toc_csect; 3938 3939 demand_empty_rest_of_line (); 3940} 3941 3942/* The AIX assembler automatically aligns the operands of a .long or 3943 .short pseudo-op, and we want to be compatible. */ 3944 3945static void 3946ppc_xcoff_cons (int log_size) 3947{ 3948 frag_align (log_size, 0, 0); 3949 record_alignment (now_seg, log_size); 3950 cons (1 << log_size); 3951} 3952 3953static void 3954ppc_vbyte (int dummy ATTRIBUTE_UNUSED) 3955{ 3956 expressionS exp; 3957 int byte_count; 3958 3959 (void) expression (&exp); 3960 3961 if (exp.X_op != O_constant) 3962 { 3963 as_bad (_("non-constant byte count")); 3964 return; 3965 } 3966 3967 byte_count = exp.X_add_number; 3968 3969 if (*input_line_pointer != ',') 3970 { 3971 as_bad (_("missing value")); 3972 return; 3973 } 3974 3975 ++input_line_pointer; 3976 cons (byte_count); 3977} 3978 3979#endif /* OBJ_XCOFF */ 3980#if defined (OBJ_XCOFF) || defined (OBJ_ELF) 3981 3982/* The .tc pseudo-op. This is used when generating either XCOFF or 3983 ELF. This takes two or more arguments. 3984 3985 When generating XCOFF output, the first argument is the name to 3986 give to this location in the toc; this will be a symbol with class 3987 TC. The rest of the arguments are N-byte values to actually put at 3988 this location in the TOC; often there is just one more argument, a 3989 relocatable symbol reference. The size of the value to store 3990 depends on target word size. A 32-bit target uses 4-byte values, a 3991 64-bit target uses 8-byte values. 3992 3993 When not generating XCOFF output, the arguments are the same, but 3994 the first argument is simply ignored. */ 3995 3996static void 3997ppc_tc (int ignore ATTRIBUTE_UNUSED) 3998{ 3999#ifdef OBJ_XCOFF 4000 4001 /* Define the TOC symbol name. */ 4002 { 4003 char *name; 4004 char endc; 4005 symbolS *sym; 4006 4007 if (ppc_toc_csect == (symbolS *) NULL 4008 || ppc_toc_csect != ppc_current_csect) 4009 { 4010 as_bad (_(".tc not in .toc section")); 4011 ignore_rest_of_line (); 4012 return; 4013 } 4014 4015 name = input_line_pointer; 4016 endc = get_symbol_end (); 4017 4018 sym = symbol_find_or_make (name); 4019 4020 *input_line_pointer = endc; 4021 4022 if (S_IS_DEFINED (sym)) 4023 { 4024 symbolS *label; 4025 4026 label = symbol_get_tc (ppc_current_csect)->within; 4027 if (symbol_get_tc (label)->class != XMC_TC0) 4028 { 4029 as_bad (_(".tc with no label")); 4030 ignore_rest_of_line (); 4031 return; 4032 } 4033 4034 S_SET_SEGMENT (label, S_GET_SEGMENT (sym)); 4035 symbol_set_frag (label, symbol_get_frag (sym)); 4036 S_SET_VALUE (label, S_GET_VALUE (sym)); 4037 4038 while (! is_end_of_line[(unsigned char) *input_line_pointer]) 4039 ++input_line_pointer; 4040 4041 return; 4042 } 4043 4044 S_SET_SEGMENT (sym, now_seg); 4045 symbol_set_frag (sym, frag_now); 4046 S_SET_VALUE (sym, (valueT) frag_now_fix ()); 4047 symbol_get_tc (sym)->class = XMC_TC; 4048 symbol_get_tc (sym)->output = 1; 4049 4050 ppc_frob_label (sym); 4051 } 4052 4053#endif /* OBJ_XCOFF */ 4054#ifdef OBJ_ELF 4055 int align; 4056 4057 /* Skip the TOC symbol name. */ 4058 while (is_part_of_name (*input_line_pointer) 4059 || *input_line_pointer == '[' 4060 || *input_line_pointer == ']' 4061 || *input_line_pointer == '{' 4062 || *input_line_pointer == '}') 4063 ++input_line_pointer; 4064 4065 /* Align to a four/eight byte boundary. */ 4066 align = ppc_obj64 ? 3 : 2; 4067 frag_align (align, 0, 0); 4068 record_alignment (now_seg, align); 4069#endif /* OBJ_ELF */ 4070 4071 if (*input_line_pointer != ',') 4072 demand_empty_rest_of_line (); 4073 else 4074 { 4075 ++input_line_pointer; 4076 cons (ppc_obj64 ? 8 : 4); 4077 } 4078} 4079 4080/* Pseudo-op .machine. */ 4081 4082static void 4083ppc_machine (int ignore ATTRIBUTE_UNUSED) 4084{ 4085 char *cpu_string; 4086#define MAX_HISTORY 100 4087 static unsigned long *cpu_history; 4088 static int curr_hist; 4089 4090 SKIP_WHITESPACE (); 4091 4092 if (*input_line_pointer == '"') 4093 { 4094 int len; 4095 cpu_string = demand_copy_C_string (&len); 4096 } 4097 else 4098 { 4099 char c; 4100 cpu_string = input_line_pointer; 4101 c = get_symbol_end (); 4102 cpu_string = xstrdup (cpu_string); 4103 *input_line_pointer = c; 4104 } 4105 4106 if (cpu_string != NULL) 4107 { 4108 unsigned long old_cpu = ppc_cpu; 4109 char *p; 4110 4111 for (p = cpu_string; *p != 0; p++) 4112 *p = TOLOWER (*p); 4113 4114 if (strcmp (cpu_string, "push") == 0) 4115 { 4116 if (cpu_history == NULL) 4117 cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history)); 4118 4119 if (curr_hist >= MAX_HISTORY) 4120 as_bad (_(".machine stack overflow")); 4121 else 4122 cpu_history[curr_hist++] = ppc_cpu; 4123 } 4124 else if (strcmp (cpu_string, "pop") == 0) 4125 { 4126 if (curr_hist <= 0) 4127 as_bad (_(".machine stack underflow")); 4128 else 4129 ppc_cpu = cpu_history[--curr_hist]; 4130 } 4131 else if (parse_cpu (cpu_string)) 4132 ; 4133 else 4134 as_bad (_("invalid machine `%s'"), cpu_string); 4135 4136 if (ppc_cpu != old_cpu) 4137 ppc_setup_opcodes (); 4138 } 4139 4140 demand_empty_rest_of_line (); 4141} 4142 4143/* See whether a symbol is in the TOC section. */ 4144 4145static int 4146ppc_is_toc_sym (symbolS *sym) 4147{ 4148#ifdef OBJ_XCOFF 4149 return symbol_get_tc (sym)->class == XMC_TC; 4150#endif 4151#ifdef OBJ_ELF 4152 const char *sname = segment_name (S_GET_SEGMENT (sym)); 4153 if (ppc_obj64) 4154 return strcmp (sname, ".toc") == 0; 4155 else 4156 return strcmp (sname, ".got") == 0; 4157#endif 4158} 4159#endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */ 4160 4161#ifdef TE_PE 4162 4163/* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */ 4164 4165/* Set the current section. */ 4166static void 4167ppc_set_current_section (segT new) 4168{ 4169 ppc_previous_section = ppc_current_section; 4170 ppc_current_section = new; 4171} 4172 4173/* pseudo-op: .previous 4174 behaviour: toggles the current section with the previous section. 4175 errors: None 4176 warnings: "No previous section" */ 4177 4178static void 4179ppc_previous (int ignore ATTRIBUTE_UNUSED) 4180{ 4181 symbolS *tmp; 4182 4183 if (ppc_previous_section == NULL) 4184 { 4185 as_warn (_("No previous section to return to. Directive ignored.")); 4186 return; 4187 } 4188 4189 subseg_set (ppc_previous_section, 0); 4190 4191 ppc_set_current_section (ppc_previous_section); 4192} 4193 4194/* pseudo-op: .pdata 4195 behaviour: predefined read only data section 4196 double word aligned 4197 errors: None 4198 warnings: None 4199 initial: .section .pdata "adr3" 4200 a - don't know -- maybe a misprint 4201 d - initialized data 4202 r - readable 4203 3 - double word aligned (that would be 4 byte boundary) 4204 4205 commentary: 4206 Tag index tables (also known as the function table) for exception 4207 handling, debugging, etc. */ 4208 4209static void 4210ppc_pdata (int ignore ATTRIBUTE_UNUSED) 4211{ 4212 if (pdata_section == 0) 4213 { 4214 pdata_section = subseg_new (".pdata", 0); 4215 4216 bfd_set_section_flags (stdoutput, pdata_section, 4217 (SEC_ALLOC | SEC_LOAD | SEC_RELOC 4218 | SEC_READONLY | SEC_DATA )); 4219 4220 bfd_set_section_alignment (stdoutput, pdata_section, 2); 4221 } 4222 else 4223 { 4224 pdata_section = subseg_new (".pdata", 0); 4225 } 4226 ppc_set_current_section (pdata_section); 4227} 4228 4229/* pseudo-op: .ydata 4230 behaviour: predefined read only data section 4231 double word aligned 4232 errors: None 4233 warnings: None 4234 initial: .section .ydata "drw3" 4235 a - don't know -- maybe a misprint 4236 d - initialized data 4237 r - readable 4238 3 - double word aligned (that would be 4 byte boundary) 4239 commentary: 4240 Tag tables (also known as the scope table) for exception handling, 4241 debugging, etc. */ 4242 4243static void 4244ppc_ydata (int ignore ATTRIBUTE_UNUSED) 4245{ 4246 if (ydata_section == 0) 4247 { 4248 ydata_section = subseg_new (".ydata", 0); 4249 bfd_set_section_flags (stdoutput, ydata_section, 4250 (SEC_ALLOC | SEC_LOAD | SEC_RELOC 4251 | SEC_READONLY | SEC_DATA )); 4252 4253 bfd_set_section_alignment (stdoutput, ydata_section, 3); 4254 } 4255 else 4256 { 4257 ydata_section = subseg_new (".ydata", 0); 4258 } 4259 ppc_set_current_section (ydata_section); 4260} 4261 4262/* pseudo-op: .reldata 4263 behaviour: predefined read write data section 4264 double word aligned (4-byte) 4265 FIXME: relocation is applied to it 4266 FIXME: what's the difference between this and .data? 4267 errors: None 4268 warnings: None 4269 initial: .section .reldata "drw3" 4270 d - initialized data 4271 r - readable 4272 w - writeable 4273 3 - double word aligned (that would be 8 byte boundary) 4274 4275 commentary: 4276 Like .data, but intended to hold data subject to relocation, such as 4277 function descriptors, etc. */ 4278 4279static void 4280ppc_reldata (int ignore ATTRIBUTE_UNUSED) 4281{ 4282 if (reldata_section == 0) 4283 { 4284 reldata_section = subseg_new (".reldata", 0); 4285 4286 bfd_set_section_flags (stdoutput, reldata_section, 4287 (SEC_ALLOC | SEC_LOAD | SEC_RELOC 4288 | SEC_DATA)); 4289 4290 bfd_set_section_alignment (stdoutput, reldata_section, 2); 4291 } 4292 else 4293 { 4294 reldata_section = subseg_new (".reldata", 0); 4295 } 4296 ppc_set_current_section (reldata_section); 4297} 4298 4299/* pseudo-op: .rdata 4300 behaviour: predefined read only data section 4301 double word aligned 4302 errors: None 4303 warnings: None 4304 initial: .section .rdata "dr3" 4305 d - initialized data 4306 r - readable 4307 3 - double word aligned (that would be 4 byte boundary) */ 4308 4309static void 4310ppc_rdata (int ignore ATTRIBUTE_UNUSED) 4311{ 4312 if (rdata_section == 0) 4313 { 4314 rdata_section = subseg_new (".rdata", 0); 4315 bfd_set_section_flags (stdoutput, rdata_section, 4316 (SEC_ALLOC | SEC_LOAD | SEC_RELOC 4317 | SEC_READONLY | SEC_DATA )); 4318 4319 bfd_set_section_alignment (stdoutput, rdata_section, 2); 4320 } 4321 else 4322 { 4323 rdata_section = subseg_new (".rdata", 0); 4324 } 4325 ppc_set_current_section (rdata_section); 4326} 4327 4328/* pseudo-op: .ualong 4329 behaviour: much like .int, with the exception that no alignment is 4330 performed. 4331 FIXME: test the alignment statement 4332 errors: None 4333 warnings: None */ 4334 4335static void 4336ppc_ualong (int ignore ATTRIBUTE_UNUSED) 4337{ 4338 /* Try for long. */ 4339 cons (4); 4340} 4341 4342/* pseudo-op: .znop <symbol name> 4343 behaviour: Issue a nop instruction 4344 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using 4345 the supplied symbol name. 4346 errors: None 4347 warnings: Missing symbol name */ 4348 4349static void 4350ppc_znop (int ignore ATTRIBUTE_UNUSED) 4351{ 4352 unsigned long insn; 4353 const struct powerpc_opcode *opcode; 4354 expressionS ex; 4355 char *f; 4356 symbolS *sym; 4357 char *symbol_name; 4358 char c; 4359 char *name; 4360 unsigned int exp; 4361 flagword flags; 4362 asection *sec; 4363 4364 /* Strip out the symbol name. */ 4365 symbol_name = input_line_pointer; 4366 c = get_symbol_end (); 4367 4368 name = xmalloc (input_line_pointer - symbol_name + 1); 4369 strcpy (name, symbol_name); 4370 4371 sym = symbol_find_or_make (name); 4372 4373 *input_line_pointer = c; 4374 4375 SKIP_WHITESPACE (); 4376 4377 /* Look up the opcode in the hash table. */ 4378 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop"); 4379 4380 /* Stick in the nop. */ 4381 insn = opcode->opcode; 4382 4383 /* Write out the instruction. */ 4384 f = frag_more (4); 4385 md_number_to_chars (f, insn, 4); 4386 fix_new (frag_now, 4387 f - frag_now->fr_literal, 4388 4, 4389 sym, 4390 0, 4391 0, 4392 BFD_RELOC_16_GOT_PCREL); 4393 4394} 4395 4396/* pseudo-op: 4397 behaviour: 4398 errors: 4399 warnings: */ 4400 4401static void 4402ppc_pe_comm (int lcomm) 4403{ 4404 char *name; 4405 char c; 4406 char *p; 4407 offsetT temp; 4408 symbolS *symbolP; 4409 offsetT align; 4410 4411 name = input_line_pointer; 4412 c = get_symbol_end (); 4413 4414 /* just after name is now '\0'. */ 4415 p = input_line_pointer; 4416 *p = c; 4417 SKIP_WHITESPACE (); 4418 if (*input_line_pointer != ',') 4419 { 4420 as_bad (_("Expected comma after symbol-name: rest of line ignored.")); 4421 ignore_rest_of_line (); 4422 return; 4423 } 4424 4425 input_line_pointer++; /* skip ',' */ 4426 if ((temp = get_absolute_expression ()) < 0) 4427 { 4428 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp); 4429 ignore_rest_of_line (); 4430 return; 4431 } 4432 4433 if (! lcomm) 4434 { 4435 /* The third argument to .comm is the alignment. */ 4436 if (*input_line_pointer != ',') 4437 align = 3; 4438 else 4439 { 4440 ++input_line_pointer; 4441 align = get_absolute_expression (); 4442 if (align <= 0) 4443 { 4444 as_warn (_("ignoring bad alignment")); 4445 align = 3; 4446 } 4447 } 4448 } 4449 4450 *p = 0; 4451 symbolP = symbol_find_or_make (name); 4452 4453 *p = c; 4454 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) 4455 { 4456 as_bad (_("Ignoring attempt to re-define symbol `%s'."), 4457 S_GET_NAME (symbolP)); 4458 ignore_rest_of_line (); 4459 return; 4460 } 4461 4462 if (S_GET_VALUE (symbolP)) 4463 { 4464 if (S_GET_VALUE (symbolP) != (valueT) temp) 4465 as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), 4466 S_GET_NAME (symbolP), 4467 (long) S_GET_VALUE (symbolP), 4468 (long) temp); 4469 } 4470 else 4471 { 4472 S_SET_VALUE (symbolP, (valueT) temp); 4473 S_SET_EXTERNAL (symbolP); 4474 S_SET_SEGMENT (symbolP, bfd_com_section_ptr); 4475 } 4476 4477 demand_empty_rest_of_line (); 4478} 4479 4480/* 4481 * implement the .section pseudo op: 4482 * .section name {, "flags"} 4483 * ^ ^ 4484 * | +--- optional flags: 'b' for bss 4485 * | 'i' for info 4486 * +-- section name 'l' for lib 4487 * 'n' for noload 4488 * 'o' for over 4489 * 'w' for data 4490 * 'd' (apparently m88k for data) 4491 * 'x' for text 4492 * But if the argument is not a quoted string, treat it as a 4493 * subsegment number. 4494 * 4495 * FIXME: this is a copy of the section processing from obj-coff.c, with 4496 * additions/changes for the moto-pas assembler support. There are three 4497 * categories: 4498 * 4499 * FIXME: I just noticed this. This doesn't work at all really. It it 4500 * setting bits that bfd probably neither understands or uses. The 4501 * correct approach (?) will have to incorporate extra fields attached 4502 * to the section to hold the system specific stuff. (krk) 4503 * 4504 * Section Contents: 4505 * 'a' - unknown - referred to in documentation, but no definition supplied 4506 * 'c' - section has code 4507 * 'd' - section has initialized data 4508 * 'u' - section has uninitialized data 4509 * 'i' - section contains directives (info) 4510 * 'n' - section can be discarded 4511 * 'R' - remove section at link time 4512 * 4513 * Section Protection: 4514 * 'r' - section is readable 4515 * 'w' - section is writeable 4516 * 'x' - section is executable 4517 * 's' - section is sharable 4518 * 4519 * Section Alignment: 4520 * '0' - align to byte boundary 4521 * '1' - align to halfword undary 4522 * '2' - align to word boundary 4523 * '3' - align to doubleword boundary 4524 * '4' - align to quadword boundary 4525 * '5' - align to 32 byte boundary 4526 * '6' - align to 64 byte boundary 4527 * 4528 */ 4529 4530void 4531ppc_pe_section (int ignore ATTRIBUTE_UNUSED) 4532{ 4533 /* Strip out the section name. */ 4534 char *section_name; 4535 char c; 4536 char *name; 4537 unsigned int exp; 4538 flagword flags; 4539 segT sec; 4540 int align; 4541 4542 section_name = input_line_pointer; 4543 c = get_symbol_end (); 4544 4545 name = xmalloc (input_line_pointer - section_name + 1); 4546 strcpy (name, section_name); 4547 4548 *input_line_pointer = c; 4549 4550 SKIP_WHITESPACE (); 4551 4552 exp = 0; 4553 flags = SEC_NO_FLAGS; 4554 4555 if (strcmp (name, ".idata$2") == 0) 4556 { 4557 align = 0; 4558 } 4559 else if (strcmp (name, ".idata$3") == 0) 4560 { 4561 align = 0; 4562 } 4563 else if (strcmp (name, ".idata$4") == 0) 4564 { 4565 align = 2; 4566 } 4567 else if (strcmp (name, ".idata$5") == 0) 4568 { 4569 align = 2; 4570 } 4571 else if (strcmp (name, ".idata$6") == 0) 4572 { 4573 align = 1; 4574 } 4575 else 4576 /* Default alignment to 16 byte boundary. */ 4577 align = 4; 4578 4579 if (*input_line_pointer == ',') 4580 { 4581 ++input_line_pointer; 4582 SKIP_WHITESPACE (); 4583 if (*input_line_pointer != '"') 4584 exp = get_absolute_expression (); 4585 else 4586 { 4587 ++input_line_pointer; 4588 while (*input_line_pointer != '"' 4589 && ! is_end_of_line[(unsigned char) *input_line_pointer]) 4590 { 4591 switch (*input_line_pointer) 4592 { 4593 /* Section Contents */ 4594 case 'a': /* unknown */ 4595 as_bad (_("Unsupported section attribute -- 'a'")); 4596 break; 4597 case 'c': /* code section */ 4598 flags |= SEC_CODE; 4599 break; 4600 case 'd': /* section has initialized data */ 4601 flags |= SEC_DATA; 4602 break; 4603 case 'u': /* section has uninitialized data */ 4604 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA 4605 in winnt.h */ 4606 flags |= SEC_ROM; 4607 break; 4608 case 'i': /* section contains directives (info) */ 4609 /* FIXME: This is IMAGE_SCN_LNK_INFO 4610 in winnt.h */ 4611 flags |= SEC_HAS_CONTENTS; 4612 break; 4613 case 'n': /* section can be discarded */ 4614 flags &=~ SEC_LOAD; 4615 break; 4616 case 'R': /* Remove section at link time */ 4617 flags |= SEC_NEVER_LOAD; 4618 break; 4619#if IFLICT_BRAIN_DAMAGE 4620 /* Section Protection */ 4621 case 'r': /* section is readable */ 4622 flags |= IMAGE_SCN_MEM_READ; 4623 break; 4624 case 'w': /* section is writeable */ 4625 flags |= IMAGE_SCN_MEM_WRITE; 4626 break; 4627 case 'x': /* section is executable */ 4628 flags |= IMAGE_SCN_MEM_EXECUTE; 4629 break; 4630 case 's': /* section is sharable */ 4631 flags |= IMAGE_SCN_MEM_SHARED; 4632 break; 4633 4634 /* Section Alignment */ 4635 case '0': /* align to byte boundary */ 4636 flags |= IMAGE_SCN_ALIGN_1BYTES; 4637 align = 0; 4638 break; 4639 case '1': /* align to halfword boundary */ 4640 flags |= IMAGE_SCN_ALIGN_2BYTES; 4641 align = 1; 4642 break; 4643 case '2': /* align to word boundary */ 4644 flags |= IMAGE_SCN_ALIGN_4BYTES; 4645 align = 2; 4646 break; 4647 case '3': /* align to doubleword boundary */ 4648 flags |= IMAGE_SCN_ALIGN_8BYTES; 4649 align = 3; 4650 break; 4651 case '4': /* align to quadword boundary */ 4652 flags |= IMAGE_SCN_ALIGN_16BYTES; 4653 align = 4; 4654 break; 4655 case '5': /* align to 32 byte boundary */ 4656 flags |= IMAGE_SCN_ALIGN_32BYTES; 4657 align = 5; 4658 break; 4659 case '6': /* align to 64 byte boundary */ 4660 flags |= IMAGE_SCN_ALIGN_64BYTES; 4661 align = 6; 4662 break; 4663#endif 4664 default: 4665 as_bad (_("unknown section attribute '%c'"), 4666 *input_line_pointer); 4667 break; 4668 } 4669 ++input_line_pointer; 4670 } 4671 if (*input_line_pointer == '"') 4672 ++input_line_pointer; 4673 } 4674 } 4675 4676 sec = subseg_new (name, (subsegT) exp); 4677 4678 ppc_set_current_section (sec); 4679 4680 if (flags != SEC_NO_FLAGS) 4681 { 4682 if (! bfd_set_section_flags (stdoutput, sec, flags)) 4683 as_bad (_("error setting flags for \"%s\": %s"), 4684 bfd_section_name (stdoutput, sec), 4685 bfd_errmsg (bfd_get_error ())); 4686 } 4687 4688 bfd_set_section_alignment (stdoutput, sec, align); 4689} 4690 4691static void 4692ppc_pe_function (int ignore ATTRIBUTE_UNUSED) 4693{ 4694 char *name; 4695 char endc; 4696 symbolS *ext_sym; 4697 4698 name = input_line_pointer; 4699 endc = get_symbol_end (); 4700 4701 ext_sym = symbol_find_or_make (name); 4702 4703 *input_line_pointer = endc; 4704 4705 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); 4706 SF_SET_FUNCTION (ext_sym); 4707 SF_SET_PROCESS (ext_sym); 4708 coff_add_linesym (ext_sym); 4709 4710 demand_empty_rest_of_line (); 4711} 4712 4713static void 4714ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED) 4715{ 4716 if (tocdata_section == 0) 4717 { 4718 tocdata_section = subseg_new (".tocd", 0); 4719 /* FIXME: section flags won't work. */ 4720 bfd_set_section_flags (stdoutput, tocdata_section, 4721 (SEC_ALLOC | SEC_LOAD | SEC_RELOC 4722 | SEC_READONLY | SEC_DATA)); 4723 4724 bfd_set_section_alignment (stdoutput, tocdata_section, 2); 4725 } 4726 else 4727 { 4728 rdata_section = subseg_new (".tocd", 0); 4729 } 4730 4731 ppc_set_current_section (tocdata_section); 4732 4733 demand_empty_rest_of_line (); 4734} 4735 4736/* Don't adjust TOC relocs to use the section symbol. */ 4737 4738int 4739ppc_pe_fix_adjustable (fixS *fix) 4740{ 4741 return fix->fx_r_type != BFD_RELOC_PPC_TOC16; 4742} 4743 4744#endif 4745 4746#ifdef OBJ_XCOFF 4747 4748/* XCOFF specific symbol and file handling. */ 4749 4750/* Canonicalize the symbol name. We use the to force the suffix, if 4751 any, to use square brackets, and to be in upper case. */ 4752 4753char * 4754ppc_canonicalize_symbol_name (char *name) 4755{ 4756 char *s; 4757 4758 if (ppc_stab_symbol) 4759 return name; 4760 4761 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++) 4762 ; 4763 if (*s != '\0') 4764 { 4765 char brac; 4766 4767 if (*s == '[') 4768 brac = ']'; 4769 else 4770 { 4771 *s = '['; 4772 brac = '}'; 4773 } 4774 4775 for (s++; *s != '\0' && *s != brac; s++) 4776 *s = TOUPPER (*s); 4777 4778 if (*s == '\0' || s[1] != '\0') 4779 as_bad (_("bad symbol suffix")); 4780 4781 *s = ']'; 4782 } 4783 4784 return name; 4785} 4786 4787/* Set the class of a symbol based on the suffix, if any. This is 4788 called whenever a new symbol is created. */ 4789 4790void 4791ppc_symbol_new_hook (symbolS *sym) 4792{ 4793 struct ppc_tc_sy *tc; 4794 const char *s; 4795 4796 tc = symbol_get_tc (sym); 4797 tc->next = NULL; 4798 tc->output = 0; 4799 tc->class = -1; 4800 tc->real_name = NULL; 4801 tc->subseg = 0; 4802 tc->align = 0; 4803 tc->size = NULL; 4804 tc->within = NULL; 4805 4806 if (ppc_stab_symbol) 4807 return; 4808 4809 s = strchr (S_GET_NAME (sym), '['); 4810 if (s == (const char *) NULL) 4811 { 4812 /* There is no suffix. */ 4813 return; 4814 } 4815 4816 ++s; 4817 4818 switch (s[0]) 4819 { 4820 case 'B': 4821 if (strcmp (s, "BS]") == 0) 4822 tc->class = XMC_BS; 4823 break; 4824 case 'D': 4825 if (strcmp (s, "DB]") == 0) 4826 tc->class = XMC_DB; 4827 else if (strcmp (s, "DS]") == 0) 4828 tc->class = XMC_DS; 4829 break; 4830 case 'G': 4831 if (strcmp (s, "GL]") == 0) 4832 tc->class = XMC_GL; 4833 break; 4834 case 'P': 4835 if (strcmp (s, "PR]") == 0) 4836 tc->class = XMC_PR; 4837 break; 4838 case 'R': 4839 if (strcmp (s, "RO]") == 0) 4840 tc->class = XMC_RO; 4841 else if (strcmp (s, "RW]") == 0) 4842 tc->class = XMC_RW; 4843 break; 4844 case 'S': 4845 if (strcmp (s, "SV]") == 0) 4846 tc->class = XMC_SV; 4847 break; 4848 case 'T': 4849 if (strcmp (s, "TC]") == 0) 4850 tc->class = XMC_TC; 4851 else if (strcmp (s, "TI]") == 0) 4852 tc->class = XMC_TI; 4853 else if (strcmp (s, "TB]") == 0) 4854 tc->class = XMC_TB; 4855 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0) 4856 tc->class = XMC_TC0; 4857 break; 4858 case 'U': 4859 if (strcmp (s, "UA]") == 0) 4860 tc->class = XMC_UA; 4861 else if (strcmp (s, "UC]") == 0) 4862 tc->class = XMC_UC; 4863 break; 4864 case 'X': 4865 if (strcmp (s, "XO]") == 0) 4866 tc->class = XMC_XO; 4867 break; 4868 } 4869 4870 if (tc->class == -1) 4871 as_bad (_("Unrecognized symbol suffix")); 4872} 4873 4874/* Set the class of a label based on where it is defined. This 4875 handles symbols without suffixes. Also, move the symbol so that it 4876 follows the csect symbol. */ 4877 4878void 4879ppc_frob_label (symbolS *sym) 4880{ 4881 if (ppc_current_csect != (symbolS *) NULL) 4882 { 4883 if (symbol_get_tc (sym)->class == -1) 4884 symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class; 4885 4886 symbol_remove (sym, &symbol_rootP, &symbol_lastP); 4887 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within, 4888 &symbol_rootP, &symbol_lastP); 4889 symbol_get_tc (ppc_current_csect)->within = sym; 4890 } 4891 4892#ifdef OBJ_ELF 4893 dwarf2_emit_label (sym); 4894#endif 4895} 4896 4897/* This variable is set by ppc_frob_symbol if any absolute symbols are 4898 seen. It tells ppc_adjust_symtab whether it needs to look through 4899 the symbols. */ 4900 4901static bfd_boolean ppc_saw_abs; 4902 4903/* Change the name of a symbol just before writing it out. Set the 4904 real name if the .rename pseudo-op was used. Otherwise, remove any 4905 class suffix. Return 1 if the symbol should not be included in the 4906 symbol table. */ 4907 4908int 4909ppc_frob_symbol (symbolS *sym) 4910{ 4911 static symbolS *ppc_last_function; 4912 static symbolS *set_end; 4913 4914 /* Discard symbols that should not be included in the output symbol 4915 table. */ 4916 if (! symbol_used_in_reloc_p (sym) 4917 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0 4918 || (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym)) 4919 && ! symbol_get_tc (sym)->output 4920 && S_GET_STORAGE_CLASS (sym) != C_FILE))) 4921 return 1; 4922 4923 /* This one will disappear anyway. Don't make a csect sym for it. */ 4924 if (sym == abs_section_sym) 4925 return 1; 4926 4927 if (symbol_get_tc (sym)->real_name != (char *) NULL) 4928 S_SET_NAME (sym, symbol_get_tc (sym)->real_name); 4929 else 4930 { 4931 const char *name; 4932 const char *s; 4933 4934 name = S_GET_NAME (sym); 4935 s = strchr (name, '['); 4936 if (s != (char *) NULL) 4937 { 4938 unsigned int len; 4939 char *snew; 4940 4941 len = s - name; 4942 snew = xmalloc (len + 1); 4943 memcpy (snew, name, len); 4944 snew[len] = '\0'; 4945 4946 S_SET_NAME (sym, snew); 4947 } 4948 } 4949 4950 if (set_end != (symbolS *) NULL) 4951 { 4952 SA_SET_SYM_ENDNDX (set_end, sym); 4953 set_end = NULL; 4954 } 4955 4956 if (SF_GET_FUNCTION (sym)) 4957 { 4958 if (ppc_last_function != (symbolS *) NULL) 4959 as_bad (_("two .function pseudo-ops with no intervening .ef")); 4960 ppc_last_function = sym; 4961 if (symbol_get_tc (sym)->size != (symbolS *) NULL) 4962 { 4963 resolve_symbol_value (symbol_get_tc (sym)->size); 4964 SA_SET_SYM_FSIZE (sym, 4965 (long) S_GET_VALUE (symbol_get_tc (sym)->size)); 4966 } 4967 } 4968 else if (S_GET_STORAGE_CLASS (sym) == C_FCN 4969 && strcmp (S_GET_NAME (sym), ".ef") == 0) 4970 { 4971 if (ppc_last_function == (symbolS *) NULL) 4972 as_bad (_(".ef with no preceding .function")); 4973 else 4974 { 4975 set_end = ppc_last_function; 4976 ppc_last_function = NULL; 4977 4978 /* We don't have a C_EFCN symbol, but we need to force the 4979 COFF backend to believe that it has seen one. */ 4980 coff_last_function = NULL; 4981 } 4982 } 4983 4984 if (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym)) 4985 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0 4986 && S_GET_STORAGE_CLASS (sym) != C_FILE 4987 && S_GET_STORAGE_CLASS (sym) != C_FCN 4988 && S_GET_STORAGE_CLASS (sym) != C_BLOCK 4989 && S_GET_STORAGE_CLASS (sym) != C_BSTAT 4990 && S_GET_STORAGE_CLASS (sym) != C_ESTAT 4991 && S_GET_STORAGE_CLASS (sym) != C_BINCL 4992 && S_GET_STORAGE_CLASS (sym) != C_EINCL 4993 && S_GET_SEGMENT (sym) != ppc_coff_debug_section) 4994 S_SET_STORAGE_CLASS (sym, C_HIDEXT); 4995 4996 if (S_GET_STORAGE_CLASS (sym) == C_EXT 4997 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT) 4998 { 4999 int i; 5000 union internal_auxent *a; 5001 5002 /* Create a csect aux. */ 5003 i = S_GET_NUMBER_AUXILIARY (sym); 5004 S_SET_NUMBER_AUXILIARY (sym, i + 1); 5005 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent; 5006 if (symbol_get_tc (sym)->class == XMC_TC0) 5007 { 5008 /* This is the TOC table. */ 5009 know (strcmp (S_GET_NAME (sym), "TOC") == 0); 5010 a->x_csect.x_scnlen.l = 0; 5011 a->x_csect.x_smtyp = (2 << 3) | XTY_SD; 5012 } 5013 else if (symbol_get_tc (sym)->subseg != 0) 5014 { 5015 /* This is a csect symbol. x_scnlen is the size of the 5016 csect. */ 5017 if (symbol_get_tc (sym)->next == (symbolS *) NULL) 5018 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, 5019 S_GET_SEGMENT (sym)) 5020 - S_GET_VALUE (sym)); 5021 else 5022 { 5023 resolve_symbol_value (symbol_get_tc (sym)->next); 5024 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next) 5025 - S_GET_VALUE (sym)); 5026 } 5027 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD; 5028 } 5029 else if (S_GET_SEGMENT (sym) == bss_section) 5030 { 5031 /* This is a common symbol. */ 5032 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset; 5033 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM; 5034 if (S_IS_EXTERNAL (sym)) 5035 symbol_get_tc (sym)->class = XMC_RW; 5036 else 5037 symbol_get_tc (sym)->class = XMC_BS; 5038 } 5039 else if (S_GET_SEGMENT (sym) == absolute_section) 5040 { 5041 /* This is an absolute symbol. The csect will be created by 5042 ppc_adjust_symtab. */ 5043 ppc_saw_abs = TRUE; 5044 a->x_csect.x_smtyp = XTY_LD; 5045 if (symbol_get_tc (sym)->class == -1) 5046 symbol_get_tc (sym)->class = XMC_XO; 5047 } 5048 else if (! S_IS_DEFINED (sym)) 5049 { 5050 /* This is an external symbol. */ 5051 a->x_csect.x_scnlen.l = 0; 5052 a->x_csect.x_smtyp = XTY_ER; 5053 } 5054 else if (symbol_get_tc (sym)->class == XMC_TC) 5055 { 5056 symbolS *next; 5057 5058 /* This is a TOC definition. x_scnlen is the size of the 5059 TOC entry. */ 5060 next = symbol_next (sym); 5061 while (symbol_get_tc (next)->class == XMC_TC0) 5062 next = symbol_next (next); 5063 if (next == (symbolS *) NULL 5064 || symbol_get_tc (next)->class != XMC_TC) 5065 { 5066 if (ppc_after_toc_frag == (fragS *) NULL) 5067 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, 5068 data_section) 5069 - S_GET_VALUE (sym)); 5070 else 5071 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address 5072 - S_GET_VALUE (sym)); 5073 } 5074 else 5075 { 5076 resolve_symbol_value (next); 5077 a->x_csect.x_scnlen.l = (S_GET_VALUE (next) 5078 - S_GET_VALUE (sym)); 5079 } 5080 a->x_csect.x_smtyp = (2 << 3) | XTY_SD; 5081 } 5082 else 5083 { 5084 symbolS *csect; 5085 5086 /* This is a normal symbol definition. x_scnlen is the 5087 symbol index of the containing csect. */ 5088 if (S_GET_SEGMENT (sym) == text_section) 5089 csect = ppc_text_csects; 5090 else if (S_GET_SEGMENT (sym) == data_section) 5091 csect = ppc_data_csects; 5092 else 5093 abort (); 5094 5095 /* Skip the initial dummy symbol. */ 5096 csect = symbol_get_tc (csect)->next; 5097 5098 if (csect == (symbolS *) NULL) 5099 { 5100 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym)); 5101 a->x_csect.x_scnlen.l = 0; 5102 } 5103 else 5104 { 5105 while (symbol_get_tc (csect)->next != (symbolS *) NULL) 5106 { 5107 resolve_symbol_value (symbol_get_tc (csect)->next); 5108 if (S_GET_VALUE (symbol_get_tc (csect)->next) 5109 > S_GET_VALUE (sym)) 5110 break; 5111 csect = symbol_get_tc (csect)->next; 5112 } 5113 5114 a->x_csect.x_scnlen.p = 5115 coffsymbol (symbol_get_bfdsym (csect))->native; 5116 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen = 5117 1; 5118 } 5119 a->x_csect.x_smtyp = XTY_LD; 5120 } 5121 5122 a->x_csect.x_parmhash = 0; 5123 a->x_csect.x_snhash = 0; 5124 if (symbol_get_tc (sym)->class == -1) 5125 a->x_csect.x_smclas = XMC_PR; 5126 else 5127 a->x_csect.x_smclas = symbol_get_tc (sym)->class; 5128 a->x_csect.x_stab = 0; 5129 a->x_csect.x_snstab = 0; 5130 5131 /* Don't let the COFF backend resort these symbols. */ 5132 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END; 5133 } 5134 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT) 5135 { 5136 /* We want the value to be the symbol index of the referenced 5137 csect symbol. BFD will do that for us if we set the right 5138 flags. */ 5139 asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within); 5140 combined_entry_type *c = coffsymbol (bsym)->native; 5141 5142 S_SET_VALUE (sym, (valueT) (size_t) c); 5143 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1; 5144 } 5145 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM) 5146 { 5147 symbolS *block; 5148 symbolS *csect; 5149 5150 /* The value is the offset from the enclosing csect. */ 5151 block = symbol_get_tc (sym)->within; 5152 csect = symbol_get_tc (block)->within; 5153 resolve_symbol_value (csect); 5154 S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect)); 5155 } 5156 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL 5157 || S_GET_STORAGE_CLASS (sym) == C_EINCL) 5158 { 5159 /* We want the value to be a file offset into the line numbers. 5160 BFD will do that for us if we set the right flags. We have 5161 already set the value correctly. */ 5162 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1; 5163 } 5164 5165 return 0; 5166} 5167 5168/* Adjust the symbol table. This creates csect symbols for all 5169 absolute symbols. */ 5170 5171void 5172ppc_adjust_symtab (void) 5173{ 5174 symbolS *sym; 5175 5176 if (! ppc_saw_abs) 5177 return; 5178 5179 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym)) 5180 { 5181 symbolS *csect; 5182 int i; 5183 union internal_auxent *a; 5184 5185 if (S_GET_SEGMENT (sym) != absolute_section) 5186 continue; 5187 5188 csect = symbol_create (".abs[XO]", absolute_section, 5189 S_GET_VALUE (sym), &zero_address_frag); 5190 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym); 5191 S_SET_STORAGE_CLASS (csect, C_HIDEXT); 5192 i = S_GET_NUMBER_AUXILIARY (csect); 5193 S_SET_NUMBER_AUXILIARY (csect, i + 1); 5194 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent; 5195 a->x_csect.x_scnlen.l = 0; 5196 a->x_csect.x_smtyp = XTY_SD; 5197 a->x_csect.x_parmhash = 0; 5198 a->x_csect.x_snhash = 0; 5199 a->x_csect.x_smclas = XMC_XO; 5200 a->x_csect.x_stab = 0; 5201 a->x_csect.x_snstab = 0; 5202 5203 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP); 5204 5205 i = S_GET_NUMBER_AUXILIARY (sym); 5206 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent; 5207 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native; 5208 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1; 5209 } 5210 5211 ppc_saw_abs = FALSE; 5212} 5213 5214/* Set the VMA for a section. This is called on all the sections in 5215 turn. */ 5216 5217void 5218ppc_frob_section (asection *sec) 5219{ 5220 static bfd_vma vma = 0; 5221 5222 vma = md_section_align (sec, vma); 5223 bfd_set_section_vma (stdoutput, sec, vma); 5224 vma += bfd_section_size (stdoutput, sec); 5225} 5226 5227#endif /* OBJ_XCOFF */ 5228 5229/* Turn a string in input_line_pointer into a floating point constant 5230 of type TYPE, and store the appropriate bytes in *LITP. The number 5231 of LITTLENUMS emitted is stored in *SIZEP. An error message is 5232 returned, or NULL on OK. */ 5233 5234char * 5235md_atof (int type, char *litp, int *sizep) 5236{ 5237 int prec; 5238 LITTLENUM_TYPE words[4]; 5239 char *t; 5240 int i; 5241 5242 switch (type) 5243 { 5244 case 'f': 5245 prec = 2; 5246 break; 5247 5248 case 'd': 5249 prec = 4; 5250 break; 5251 5252 default: 5253 *sizep = 0; 5254 return _("bad call to md_atof"); 5255 } 5256 5257 t = atof_ieee (input_line_pointer, type, words); 5258 if (t) 5259 input_line_pointer = t; 5260 5261 *sizep = prec * 2; 5262 5263 if (target_big_endian) 5264 { 5265 for (i = 0; i < prec; i++) 5266 { 5267 md_number_to_chars (litp, (valueT) words[i], 2); 5268 litp += 2; 5269 } 5270 } 5271 else 5272 { 5273 for (i = prec - 1; i >= 0; i--) 5274 { 5275 md_number_to_chars (litp, (valueT) words[i], 2); 5276 litp += 2; 5277 } 5278 } 5279 5280 return NULL; 5281} 5282 5283/* Write a value out to the object file, using the appropriate 5284 endianness. */ 5285 5286void 5287md_number_to_chars (char *buf, valueT val, int n) 5288{ 5289 if (target_big_endian) 5290 number_to_chars_bigendian (buf, val, n); 5291 else 5292 number_to_chars_littleendian (buf, val, n); 5293} 5294 5295/* Align a section (I don't know why this is machine dependent). */ 5296 5297valueT 5298md_section_align (asection *seg ATTRIBUTE_UNUSED, valueT addr) 5299{ 5300#ifdef OBJ_ELF 5301 return addr; 5302#else 5303 int align = bfd_get_section_alignment (stdoutput, seg); 5304 5305 return ((addr + (1 << align) - 1) & (-1 << align)); 5306#endif 5307} 5308 5309/* We don't have any form of relaxing. */ 5310 5311int 5312md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED, 5313 asection *seg ATTRIBUTE_UNUSED) 5314{ 5315 abort (); 5316 return 0; 5317} 5318 5319/* Convert a machine dependent frag. We never generate these. */ 5320 5321void 5322md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, 5323 asection *sec ATTRIBUTE_UNUSED, 5324 fragS *fragp ATTRIBUTE_UNUSED) 5325{ 5326 abort (); 5327} 5328 5329/* We have no need to default values of symbols. */ 5330 5331symbolS * 5332md_undefined_symbol (char *name ATTRIBUTE_UNUSED) 5333{ 5334 return 0; 5335} 5336 5337/* Functions concerning relocs. */ 5338 5339/* The location from which a PC relative jump should be calculated, 5340 given a PC relative reloc. */ 5341 5342long 5343md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED) 5344{ 5345 return fixp->fx_frag->fr_address + fixp->fx_where; 5346} 5347 5348#ifdef OBJ_XCOFF 5349 5350/* This is called to see whether a fixup should be adjusted to use a 5351 section symbol. We take the opportunity to change a fixup against 5352 a symbol in the TOC subsegment into a reloc against the 5353 corresponding .tc symbol. */ 5354 5355int 5356ppc_fix_adjustable (fixS *fix) 5357{ 5358 valueT val = resolve_symbol_value (fix->fx_addsy); 5359 segT symseg = S_GET_SEGMENT (fix->fx_addsy); 5360 TC_SYMFIELD_TYPE *tc; 5361 5362 if (symseg == absolute_section) 5363 return 0; 5364 5365 if (ppc_toc_csect != (symbolS *) NULL 5366 && fix->fx_addsy != ppc_toc_csect 5367 && symseg == data_section 5368 && val >= ppc_toc_frag->fr_address 5369 && (ppc_after_toc_frag == (fragS *) NULL 5370 || val < ppc_after_toc_frag->fr_address)) 5371 { 5372 symbolS *sy; 5373 5374 for (sy = symbol_next (ppc_toc_csect); 5375 sy != (symbolS *) NULL; 5376 sy = symbol_next (sy)) 5377 { 5378 TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy); 5379 5380 if (sy_tc->class == XMC_TC0) 5381 continue; 5382 if (sy_tc->class != XMC_TC) 5383 break; 5384 if (val == resolve_symbol_value (sy)) 5385 { 5386 fix->fx_addsy = sy; 5387 fix->fx_addnumber = val - ppc_toc_frag->fr_address; 5388 return 0; 5389 } 5390 } 5391 5392 as_bad_where (fix->fx_file, fix->fx_line, 5393 _("symbol in .toc does not match any .tc")); 5394 } 5395 5396 /* Possibly adjust the reloc to be against the csect. */ 5397 tc = symbol_get_tc (fix->fx_addsy); 5398 if (tc->subseg == 0 5399 && tc->class != XMC_TC0 5400 && tc->class != XMC_TC 5401 && symseg != bss_section 5402 /* Don't adjust if this is a reloc in the toc section. */ 5403 && (symseg != data_section 5404 || ppc_toc_csect == NULL 5405 || val < ppc_toc_frag->fr_address 5406 || (ppc_after_toc_frag != NULL 5407 && val >= ppc_after_toc_frag->fr_address))) 5408 { 5409 symbolS *csect; 5410 symbolS *next_csect; 5411 5412 if (symseg == text_section) 5413 csect = ppc_text_csects; 5414 else if (symseg == data_section) 5415 csect = ppc_data_csects; 5416 else 5417 abort (); 5418 5419 /* Skip the initial dummy symbol. */ 5420 csect = symbol_get_tc (csect)->next; 5421 5422 if (csect != (symbolS *) NULL) 5423 { 5424 while ((next_csect = symbol_get_tc (csect)->next) != (symbolS *) NULL 5425 && (symbol_get_frag (next_csect)->fr_address <= val)) 5426 { 5427 /* If the csect address equals the symbol value, then we 5428 have to look through the full symbol table to see 5429 whether this is the csect we want. Note that we will 5430 only get here if the csect has zero length. */ 5431 if (symbol_get_frag (csect)->fr_address == val 5432 && S_GET_VALUE (csect) == val) 5433 { 5434 symbolS *scan; 5435 5436 for (scan = symbol_next (csect); 5437 scan != NULL; 5438 scan = symbol_next (scan)) 5439 { 5440 if (symbol_get_tc (scan)->subseg != 0) 5441 break; 5442 if (scan == fix->fx_addsy) 5443 break; 5444 } 5445 5446 /* If we found the symbol before the next csect 5447 symbol, then this is the csect we want. */ 5448 if (scan == fix->fx_addsy) 5449 break; 5450 } 5451 5452 csect = next_csect; 5453 } 5454 5455 fix->fx_offset += val - symbol_get_frag (csect)->fr_address; 5456 fix->fx_addsy = csect; 5457 } 5458 return 0; 5459 } 5460 5461 /* Adjust a reloc against a .lcomm symbol to be against the base 5462 .lcomm. */ 5463 if (symseg == bss_section 5464 && ! S_IS_EXTERNAL (fix->fx_addsy)) 5465 { 5466 symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol; 5467 5468 fix->fx_offset += val - resolve_symbol_value (sy); 5469 fix->fx_addsy = sy; 5470 } 5471 5472 return 0; 5473} 5474 5475/* A reloc from one csect to another must be kept. The assembler 5476 will, of course, keep relocs between sections, and it will keep 5477 absolute relocs, but we need to force it to keep PC relative relocs 5478 between two csects in the same section. */ 5479 5480int 5481ppc_force_relocation (fixS *fix) 5482{ 5483 /* At this point fix->fx_addsy should already have been converted to 5484 a csect symbol. If the csect does not include the fragment, then 5485 we need to force the relocation. */ 5486 if (fix->fx_pcrel 5487 && fix->fx_addsy != NULL 5488 && symbol_get_tc (fix->fx_addsy)->subseg != 0 5489 && ((symbol_get_frag (fix->fx_addsy)->fr_address 5490 > fix->fx_frag->fr_address) 5491 || (symbol_get_tc (fix->fx_addsy)->next != NULL 5492 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address 5493 <= fix->fx_frag->fr_address)))) 5494 return 1; 5495 5496 return generic_force_reloc (fix); 5497} 5498 5499#endif /* OBJ_XCOFF */ 5500 5501#ifdef OBJ_ELF 5502/* If this function returns non-zero, it guarantees that a relocation 5503 will be emitted for a fixup. */ 5504 5505int 5506ppc_force_relocation (fixS *fix) 5507{ 5508 /* Branch prediction relocations must force a relocation, as must 5509 the vtable description relocs. */ 5510 switch (fix->fx_r_type) 5511 { 5512 case BFD_RELOC_PPC_B16_BRTAKEN: 5513 case BFD_RELOC_PPC_B16_BRNTAKEN: 5514 case BFD_RELOC_PPC_BA16_BRTAKEN: 5515 case BFD_RELOC_PPC_BA16_BRNTAKEN: 5516 case BFD_RELOC_24_PLT_PCREL: 5517 case BFD_RELOC_PPC64_TOC: 5518 return 1; 5519 default: 5520 break; 5521 } 5522 5523 if (fix->fx_r_type >= BFD_RELOC_PPC_TLS 5524 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA) 5525 return 1; 5526 5527 return generic_force_reloc (fix); 5528} 5529 5530int 5531ppc_fix_adjustable (fixS *fix) 5532{ 5533 return (fix->fx_r_type != BFD_RELOC_16_GOTOFF 5534 && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF 5535 && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF 5536 && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF 5537 && fix->fx_r_type != BFD_RELOC_GPREL16 5538 && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT 5539 && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY 5540 && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS 5541 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)); 5542} 5543#endif 5544 5545/* Implement HANDLE_ALIGN. This writes the NOP pattern into an 5546 rs_align_code frag. */ 5547 5548void 5549ppc_handle_align (struct frag *fragP) 5550{ 5551 valueT count = (fragP->fr_next->fr_address 5552 - (fragP->fr_address + fragP->fr_fix)); 5553 5554 if (count != 0 && (count & 3) == 0) 5555 { 5556 char *dest = fragP->fr_literal + fragP->fr_fix; 5557 5558 fragP->fr_var = 4; 5559 md_number_to_chars (dest, 0x60000000, 4); 5560 5561 if ((ppc_cpu & PPC_OPCODE_POWER6) != 0) 5562 { 5563 /* For power6, we want the last nop to be a group terminating 5564 one, "ori 1,1,0". Do this by inserting an rs_fill frag 5565 immediately after this one, with its address set to the last 5566 nop location. This will automatically reduce the number of 5567 nops in the current frag by one. */ 5568 if (count > 4) 5569 { 5570 struct frag *group_nop = xmalloc (SIZEOF_STRUCT_FRAG + 4); 5571 5572 memcpy (group_nop, fragP, SIZEOF_STRUCT_FRAG); 5573 group_nop->fr_address = group_nop->fr_next->fr_address - 4; 5574 group_nop->fr_fix = 0; 5575 group_nop->fr_offset = 1; 5576 group_nop->fr_type = rs_fill; 5577 fragP->fr_next = group_nop; 5578 dest = group_nop->fr_literal; 5579 } 5580 5581 md_number_to_chars (dest, 0x60210000, 4); 5582 } 5583 } 5584} 5585 5586/* Apply a fixup to the object code. This is called for all the 5587 fixups we generated by the call to fix_new_exp, above. In the call 5588 above we used a reloc code which was the largest legal reloc code 5589 plus the operand index. Here we undo that to recover the operand 5590 index. At this point all symbol values should be fully resolved, 5591 and we attempt to completely resolve the reloc. If we can not do 5592 that, we determine the correct reloc code and put it back in the 5593 fixup. */ 5594 5595void 5596md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) 5597{ 5598 valueT value = * valP; 5599 5600#ifdef OBJ_ELF 5601 if (fixP->fx_addsy != NULL) 5602 { 5603 /* Hack around bfd_install_relocation brain damage. */ 5604 if (fixP->fx_pcrel) 5605 value += fixP->fx_frag->fr_address + fixP->fx_where; 5606 } 5607 else 5608 fixP->fx_done = 1; 5609#else 5610 /* FIXME FIXME FIXME: The value we are passed in *valP includes 5611 the symbol values. If we are doing this relocation the code in 5612 write.c is going to call bfd_install_relocation, which is also 5613 going to use the symbol value. That means that if the reloc is 5614 fully resolved we want to use *valP since bfd_install_relocation is 5615 not being used. 5616 However, if the reloc is not fully resolved we do not want to use 5617 *valP, and must use fx_offset instead. However, if the reloc 5618 is PC relative, we do want to use *valP since it includes the 5619 result of md_pcrel_from. This is confusing. */ 5620 if (fixP->fx_addsy == (symbolS *) NULL) 5621 fixP->fx_done = 1; 5622 5623 else if (fixP->fx_pcrel) 5624 ; 5625 5626 else 5627 value = fixP->fx_offset; 5628#endif 5629 5630 if (fixP->fx_subsy != (symbolS *) NULL) 5631 { 5632 /* We can't actually support subtracting a symbol. */ 5633 as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex")); 5634 } 5635 5636 if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) 5637 { 5638 int opindex; 5639 const struct powerpc_operand *operand; 5640 char *where; 5641 unsigned long insn; 5642 5643 opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; 5644 5645 operand = &powerpc_operands[opindex]; 5646 5647#ifdef OBJ_XCOFF 5648 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol 5649 does not generate a reloc. It uses the offset of `sym' within its 5650 csect. Other usages, such as `.long sym', generate relocs. This 5651 is the documented behaviour of non-TOC symbols. */ 5652 if ((operand->flags & PPC_OPERAND_PARENS) != 0 5653 && (operand->bitm & 0xfff0) == 0xfff0 5654 && operand->shift == 0 5655 && (operand->insert == NULL || ppc_obj64) 5656 && fixP->fx_addsy != NULL 5657 && symbol_get_tc (fixP->fx_addsy)->subseg != 0 5658 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC 5659 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC0 5660 && S_GET_SEGMENT (fixP->fx_addsy) != bss_section) 5661 { 5662 value = fixP->fx_offset; 5663 fixP->fx_done = 1; 5664 } 5665#endif 5666 5667 /* Fetch the instruction, insert the fully resolved operand 5668 value, and stuff the instruction back again. */ 5669 where = fixP->fx_frag->fr_literal + fixP->fx_where; 5670 if (target_big_endian) 5671 insn = bfd_getb32 ((unsigned char *) where); 5672 else 5673 insn = bfd_getl32 ((unsigned char *) where); 5674 insn = ppc_insert_operand (insn, operand, (offsetT) value, 5675 fixP->fx_file, fixP->fx_line); 5676 if (target_big_endian) 5677 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); 5678 else 5679 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); 5680 5681 if (fixP->fx_done) 5682 /* Nothing else to do here. */ 5683 return; 5684 5685 assert (fixP->fx_addsy != NULL); 5686 5687 /* Determine a BFD reloc value based on the operand information. 5688 We are only prepared to turn a few of the operands into 5689 relocs. */ 5690 if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 5691 && operand->bitm == 0x3fffffc 5692 && operand->shift == 0) 5693 fixP->fx_r_type = BFD_RELOC_PPC_B26; 5694 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 5695 && operand->bitm == 0xfffc 5696 && operand->shift == 0) 5697 { 5698 fixP->fx_r_type = BFD_RELOC_PPC_B16; 5699#ifdef OBJ_XCOFF 5700 fixP->fx_size = 2; 5701 if (target_big_endian) 5702 fixP->fx_where += 2; 5703#endif 5704 } 5705 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0 5706 && operand->bitm == 0x3fffffc 5707 && operand->shift == 0) 5708 fixP->fx_r_type = BFD_RELOC_PPC_BA26; 5709 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0 5710 && operand->bitm == 0xfffc 5711 && operand->shift == 0) 5712 { 5713 fixP->fx_r_type = BFD_RELOC_PPC_BA16; 5714#ifdef OBJ_XCOFF 5715 fixP->fx_size = 2; 5716 if (target_big_endian) 5717 fixP->fx_where += 2; 5718#endif 5719 } 5720#if defined (OBJ_XCOFF) || defined (OBJ_ELF) 5721 else if ((operand->flags & PPC_OPERAND_PARENS) != 0 5722 && (operand->bitm & 0xfff0) == 0xfff0 5723 && operand->shift == 0) 5724 { 5725 if (ppc_is_toc_sym (fixP->fx_addsy)) 5726 { 5727 fixP->fx_r_type = BFD_RELOC_PPC_TOC16; 5728#ifdef OBJ_ELF 5729 if (ppc_obj64 5730 && (operand->flags & PPC_OPERAND_DS) != 0) 5731 fixP->fx_r_type = BFD_RELOC_PPC64_TOC16_DS; 5732#endif 5733 } 5734 else 5735 { 5736 fixP->fx_r_type = BFD_RELOC_16; 5737#ifdef OBJ_ELF 5738 if (ppc_obj64 5739 && (operand->flags & PPC_OPERAND_DS) != 0) 5740 fixP->fx_r_type = BFD_RELOC_PPC64_ADDR16_DS; 5741#endif 5742 } 5743 fixP->fx_size = 2; 5744 if (target_big_endian) 5745 fixP->fx_where += 2; 5746 } 5747#endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */ 5748 else 5749 { 5750 char *sfile; 5751 unsigned int sline; 5752 5753 /* Use expr_symbol_where to see if this is an expression 5754 symbol. */ 5755 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline)) 5756 as_bad_where (fixP->fx_file, fixP->fx_line, 5757 _("unresolved expression that must be resolved")); 5758 else 5759 as_bad_where (fixP->fx_file, fixP->fx_line, 5760 _("unsupported relocation against %s"), 5761 S_GET_NAME (fixP->fx_addsy)); 5762 fixP->fx_done = 1; 5763 return; 5764 } 5765 } 5766 else 5767 { 5768#ifdef OBJ_ELF 5769 ppc_elf_validate_fix (fixP, seg); 5770#endif 5771 switch (fixP->fx_r_type) 5772 { 5773 case BFD_RELOC_CTOR: 5774 if (ppc_obj64) 5775 goto ctor64; 5776 /* fall through */ 5777 5778 case BFD_RELOC_32: 5779 if (fixP->fx_pcrel) 5780 fixP->fx_r_type = BFD_RELOC_32_PCREL; 5781 /* fall through */ 5782 5783 case BFD_RELOC_RVA: 5784 case BFD_RELOC_32_PCREL: 5785 case BFD_RELOC_PPC_EMB_NADDR32: 5786 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5787 value, 4); 5788 break; 5789 5790 case BFD_RELOC_64: 5791 ctor64: 5792 if (fixP->fx_pcrel) 5793 fixP->fx_r_type = BFD_RELOC_64_PCREL; 5794 /* fall through */ 5795 5796 case BFD_RELOC_64_PCREL: 5797 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5798 value, 8); 5799 break; 5800 5801 case BFD_RELOC_GPREL16: 5802 case BFD_RELOC_16_GOT_PCREL: 5803 case BFD_RELOC_16_GOTOFF: 5804 case BFD_RELOC_LO16_GOTOFF: 5805 case BFD_RELOC_HI16_GOTOFF: 5806 case BFD_RELOC_HI16_S_GOTOFF: 5807 case BFD_RELOC_16_BASEREL: 5808 case BFD_RELOC_LO16_BASEREL: 5809 case BFD_RELOC_HI16_BASEREL: 5810 case BFD_RELOC_HI16_S_BASEREL: 5811 case BFD_RELOC_PPC_EMB_NADDR16: 5812 case BFD_RELOC_PPC_EMB_NADDR16_LO: 5813 case BFD_RELOC_PPC_EMB_NADDR16_HI: 5814 case BFD_RELOC_PPC_EMB_NADDR16_HA: 5815 case BFD_RELOC_PPC_EMB_SDAI16: 5816 case BFD_RELOC_PPC_EMB_SDA2REL: 5817 case BFD_RELOC_PPC_EMB_SDA2I16: 5818 case BFD_RELOC_PPC_EMB_RELSEC16: 5819 case BFD_RELOC_PPC_EMB_RELST_LO: 5820 case BFD_RELOC_PPC_EMB_RELST_HI: 5821 case BFD_RELOC_PPC_EMB_RELST_HA: 5822 case BFD_RELOC_PPC_EMB_RELSDA: 5823 case BFD_RELOC_PPC_TOC16: 5824#ifdef OBJ_ELF 5825 case BFD_RELOC_PPC64_TOC16_LO: 5826 case BFD_RELOC_PPC64_TOC16_HI: 5827 case BFD_RELOC_PPC64_TOC16_HA: 5828#endif 5829 if (fixP->fx_pcrel) 5830 { 5831 if (fixP->fx_addsy != NULL) 5832 as_bad_where (fixP->fx_file, fixP->fx_line, 5833 _("cannot emit PC relative %s relocation against %s"), 5834 bfd_get_reloc_code_name (fixP->fx_r_type), 5835 S_GET_NAME (fixP->fx_addsy)); 5836 else 5837 as_bad_where (fixP->fx_file, fixP->fx_line, 5838 _("cannot emit PC relative %s relocation"), 5839 bfd_get_reloc_code_name (fixP->fx_r_type)); 5840 } 5841 5842 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5843 value, 2); 5844 break; 5845 5846 case BFD_RELOC_16: 5847 if (fixP->fx_pcrel) 5848 fixP->fx_r_type = BFD_RELOC_16_PCREL; 5849 /* fall through */ 5850 5851 case BFD_RELOC_16_PCREL: 5852 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5853 value, 2); 5854 break; 5855 5856 case BFD_RELOC_LO16: 5857 if (fixP->fx_pcrel) 5858 fixP->fx_r_type = BFD_RELOC_LO16_PCREL; 5859 /* fall through */ 5860 5861 case BFD_RELOC_LO16_PCREL: 5862 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5863 value, 2); 5864 break; 5865 5866 /* This case happens when you write, for example, 5867 lis %r3,(L1-L2)@ha 5868 where L1 and L2 are defined later. */ 5869 case BFD_RELOC_HI16: 5870 if (fixP->fx_pcrel) 5871 fixP->fx_r_type = BFD_RELOC_HI16_PCREL; 5872 /* fall through */ 5873 5874 case BFD_RELOC_HI16_PCREL: 5875 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5876 PPC_HI (value), 2); 5877 break; 5878 5879 case BFD_RELOC_HI16_S: 5880 if (fixP->fx_pcrel) 5881 fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL; 5882 /* fall through */ 5883 5884 case BFD_RELOC_HI16_S_PCREL: 5885 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5886 PPC_HA (value), 2); 5887 break; 5888 5889#ifdef OBJ_ELF 5890 case BFD_RELOC_PPC64_HIGHER: 5891 if (fixP->fx_pcrel) 5892 abort (); 5893 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5894 PPC_HIGHER (value), 2); 5895 break; 5896 5897 case BFD_RELOC_PPC64_HIGHER_S: 5898 if (fixP->fx_pcrel) 5899 abort (); 5900 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5901 PPC_HIGHERA (value), 2); 5902 break; 5903 5904 case BFD_RELOC_PPC64_HIGHEST: 5905 if (fixP->fx_pcrel) 5906 abort (); 5907 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5908 PPC_HIGHEST (value), 2); 5909 break; 5910 5911 case BFD_RELOC_PPC64_HIGHEST_S: 5912 if (fixP->fx_pcrel) 5913 abort (); 5914 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 5915 PPC_HIGHESTA (value), 2); 5916 break; 5917 5918 case BFD_RELOC_PPC64_ADDR16_DS: 5919 case BFD_RELOC_PPC64_ADDR16_LO_DS: 5920 case BFD_RELOC_PPC64_GOT16_DS: 5921 case BFD_RELOC_PPC64_GOT16_LO_DS: 5922 case BFD_RELOC_PPC64_PLT16_LO_DS: 5923 case BFD_RELOC_PPC64_SECTOFF_DS: 5924 case BFD_RELOC_PPC64_SECTOFF_LO_DS: 5925 case BFD_RELOC_PPC64_TOC16_DS: 5926 case BFD_RELOC_PPC64_TOC16_LO_DS: 5927 case BFD_RELOC_PPC64_PLTGOT16_DS: 5928 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: 5929 if (fixP->fx_pcrel) 5930 abort (); 5931 { 5932 char *where = fixP->fx_frag->fr_literal + fixP->fx_where; 5933 unsigned long val, mask; 5934 5935 if (target_big_endian) 5936 val = bfd_getb32 (where - 2); 5937 else 5938 val = bfd_getl32 (where); 5939 mask = 0xfffc; 5940 /* lq insns reserve the four lsbs. */ 5941 if ((ppc_cpu & PPC_OPCODE_POWER4) != 0 5942 && (val & (0x3f << 26)) == (56u << 26)) 5943 mask = 0xfff0; 5944 val |= value & mask; 5945 if (target_big_endian) 5946 bfd_putb16 ((bfd_vma) val, where); 5947 else 5948 bfd_putl16 ((bfd_vma) val, where); 5949 } 5950 break; 5951 5952 case BFD_RELOC_PPC_B16_BRTAKEN: 5953 case BFD_RELOC_PPC_B16_BRNTAKEN: 5954 case BFD_RELOC_PPC_BA16_BRTAKEN: 5955 case BFD_RELOC_PPC_BA16_BRNTAKEN: 5956 break; 5957 5958 case BFD_RELOC_PPC_TLS: 5959 case BFD_RELOC_PPC_TLSLD: 5960 case BFD_RELOC_PPC_TLSGD: 5961 break; 5962 5963 case BFD_RELOC_PPC_DTPMOD: 5964 case BFD_RELOC_PPC_TPREL16: 5965 case BFD_RELOC_PPC_TPREL16_LO: 5966 case BFD_RELOC_PPC_TPREL16_HI: 5967 case BFD_RELOC_PPC_TPREL16_HA: 5968 case BFD_RELOC_PPC_TPREL: 5969 case BFD_RELOC_PPC_DTPREL16: 5970 case BFD_RELOC_PPC_DTPREL16_LO: 5971 case BFD_RELOC_PPC_DTPREL16_HI: 5972 case BFD_RELOC_PPC_DTPREL16_HA: 5973 case BFD_RELOC_PPC_DTPREL: 5974 case BFD_RELOC_PPC_GOT_TLSGD16: 5975 case BFD_RELOC_PPC_GOT_TLSGD16_LO: 5976 case BFD_RELOC_PPC_GOT_TLSGD16_HI: 5977 case BFD_RELOC_PPC_GOT_TLSGD16_HA: 5978 case BFD_RELOC_PPC_GOT_TLSLD16: 5979 case BFD_RELOC_PPC_GOT_TLSLD16_LO: 5980 case BFD_RELOC_PPC_GOT_TLSLD16_HI: 5981 case BFD_RELOC_PPC_GOT_TLSLD16_HA: 5982 case BFD_RELOC_PPC_GOT_TPREL16: 5983 case BFD_RELOC_PPC_GOT_TPREL16_LO: 5984 case BFD_RELOC_PPC_GOT_TPREL16_HI: 5985 case BFD_RELOC_PPC_GOT_TPREL16_HA: 5986 case BFD_RELOC_PPC_GOT_DTPREL16: 5987 case BFD_RELOC_PPC_GOT_DTPREL16_LO: 5988 case BFD_RELOC_PPC_GOT_DTPREL16_HI: 5989 case BFD_RELOC_PPC_GOT_DTPREL16_HA: 5990 case BFD_RELOC_PPC64_TPREL16_DS: 5991 case BFD_RELOC_PPC64_TPREL16_LO_DS: 5992 case BFD_RELOC_PPC64_TPREL16_HIGHER: 5993 case BFD_RELOC_PPC64_TPREL16_HIGHERA: 5994 case BFD_RELOC_PPC64_TPREL16_HIGHEST: 5995 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: 5996 case BFD_RELOC_PPC64_DTPREL16_DS: 5997 case BFD_RELOC_PPC64_DTPREL16_LO_DS: 5998 case BFD_RELOC_PPC64_DTPREL16_HIGHER: 5999 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: 6000 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: 6001 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: 6002 S_SET_THREAD_LOCAL (fixP->fx_addsy); 6003 break; 6004#endif 6005 /* Because SDA21 modifies the register field, the size is set to 4 6006 bytes, rather than 2, so offset it here appropriately. */ 6007 case BFD_RELOC_PPC_EMB_SDA21: 6008 if (fixP->fx_pcrel) 6009 abort (); 6010 6011 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where 6012 + ((target_big_endian) ? 2 : 0), 6013 value, 2); 6014 break; 6015 6016 case BFD_RELOC_8: 6017 if (fixP->fx_pcrel) 6018 { 6019 /* This can occur if there is a bug in the input assembler, eg: 6020 ".byte <undefined_symbol> - ." */ 6021 if (fixP->fx_addsy) 6022 as_bad (_("Unable to handle reference to symbol %s"), 6023 S_GET_NAME (fixP->fx_addsy)); 6024 else 6025 as_bad (_("Unable to resolve expression")); 6026 fixP->fx_done = 1; 6027 } 6028 else 6029 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, 6030 value, 1); 6031 break; 6032 6033 case BFD_RELOC_24_PLT_PCREL: 6034 case BFD_RELOC_PPC_LOCAL24PC: 6035 if (!fixP->fx_pcrel && !fixP->fx_done) 6036 abort (); 6037 6038 if (fixP->fx_done) 6039 { 6040 char *where; 6041 unsigned long insn; 6042 6043 /* Fetch the instruction, insert the fully resolved operand 6044 value, and stuff the instruction back again. */ 6045 where = fixP->fx_frag->fr_literal + fixP->fx_where; 6046 if (target_big_endian) 6047 insn = bfd_getb32 ((unsigned char *) where); 6048 else 6049 insn = bfd_getl32 ((unsigned char *) where); 6050 if ((value & 3) != 0) 6051 as_bad_where (fixP->fx_file, fixP->fx_line, 6052 _("must branch to an address a multiple of 4")); 6053 if ((offsetT) value < -0x40000000 6054 || (offsetT) value >= 0x40000000) 6055 as_bad_where (fixP->fx_file, fixP->fx_line, 6056 _("@local or @plt branch destination is too far away, %ld bytes"), 6057 (long) value); 6058 insn = insn | (value & 0x03fffffc); 6059 if (target_big_endian) 6060 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); 6061 else 6062 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); 6063 } 6064 break; 6065 6066 case BFD_RELOC_VTABLE_INHERIT: 6067 fixP->fx_done = 0; 6068 if (fixP->fx_addsy 6069 && !S_IS_DEFINED (fixP->fx_addsy) 6070 && !S_IS_WEAK (fixP->fx_addsy)) 6071 S_SET_WEAK (fixP->fx_addsy); 6072 break; 6073 6074 case BFD_RELOC_VTABLE_ENTRY: 6075 fixP->fx_done = 0; 6076 break; 6077 6078#ifdef OBJ_ELF 6079 /* Generated by reference to `sym@tocbase'. The sym is 6080 ignored by the linker. */ 6081 case BFD_RELOC_PPC64_TOC: 6082 fixP->fx_done = 0; 6083 break; 6084#endif 6085 default: 6086 fprintf (stderr, 6087 _("Gas failure, reloc value %d\n"), fixP->fx_r_type); 6088 fflush (stderr); 6089 abort (); 6090 } 6091 } 6092 6093#ifdef OBJ_ELF 6094 fixP->fx_addnumber = value; 6095 6096 /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately 6097 from the section contents. If we are going to be emitting a reloc 6098 then the section contents are immaterial, so don't warn if they 6099 happen to overflow. Leave such warnings to ld. */ 6100 if (!fixP->fx_done) 6101 fixP->fx_no_overflow = 1; 6102#else 6103 if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16) 6104 fixP->fx_addnumber = 0; 6105 else 6106 { 6107#ifdef TE_PE 6108 fixP->fx_addnumber = 0; 6109#else 6110 /* We want to use the offset within the data segment of the 6111 symbol, not the actual VMA of the symbol. */ 6112 fixP->fx_addnumber = 6113 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy)); 6114#endif 6115 } 6116#endif 6117} 6118 6119/* Generate a reloc for a fixup. */ 6120 6121arelent * 6122tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp) 6123{ 6124 arelent *reloc; 6125 6126 reloc = (arelent *) xmalloc (sizeof (arelent)); 6127 6128 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); 6129 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); 6130 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; 6131 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); 6132 if (reloc->howto == (reloc_howto_type *) NULL) 6133 { 6134 as_bad_where (fixp->fx_file, fixp->fx_line, 6135 _("reloc %d not supported by object file format"), 6136 (int) fixp->fx_r_type); 6137 return NULL; 6138 } 6139 reloc->addend = fixp->fx_addnumber; 6140 6141 return reloc; 6142} 6143 6144void 6145ppc_cfi_frame_initial_instructions (void) 6146{ 6147 cfi_add_CFA_def_cfa (1, 0); 6148} 6149 6150int 6151tc_ppc_regname_to_dw2regnum (char *regname) 6152{ 6153 unsigned int regnum = -1; 6154 unsigned int i; 6155 const char *p; 6156 char *q; 6157 static struct { char *name; int dw2regnum; } regnames[] = 6158 { 6159 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 }, 6160 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 }, 6161 { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 }, 6162 { "spe_acc", 111 }, { "spefscr", 112 } 6163 }; 6164 6165 for (i = 0; i < ARRAY_SIZE (regnames); ++i) 6166 if (strcmp (regnames[i].name, regname) == 0) 6167 return regnames[i].dw2regnum; 6168 6169 if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v') 6170 { 6171 p = regname + 1 + (regname[1] == '.'); 6172 regnum = strtoul (p, &q, 10); 6173 if (p == q || *q || regnum >= 32) 6174 return -1; 6175 if (regname[0] == 'f') 6176 regnum += 32; 6177 else if (regname[0] == 'v') 6178 regnum += 77; 6179 } 6180 else if (regname[0] == 'c' && regname[1] == 'r') 6181 { 6182 p = regname + 2 + (regname[2] == '.'); 6183 if (p[0] < '0' || p[0] > '7' || p[1]) 6184 return -1; 6185 regnum = p[0] - '0' + 68; 6186 } 6187 return regnum; 6188} 6189