| 1 | /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000) |
| 2 | Copyright (C) 1994-2015 Free Software Foundation, Inc. |
| 3 | Written by Ian Lance Taylor, Cygnus Support. |
| 4 | |
| 5 | This file is part of GAS, the GNU Assembler. |
| 6 | |
| 7 | GAS is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GAS is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GAS; see the file COPYING. If not, write to the Free |
| 19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | 02110-1301, USA. */ |
| 21 | |
| 22 | #include "as.h" |
| 23 | #include "safe-ctype.h" |
| 24 | #include "subsegs.h" |
| 25 | #include "dw2gencfi.h" |
| 26 | #include "opcode/ppc.h" |
| 27 | |
| 28 | #ifdef OBJ_ELF |
| 29 | #include "elf/ppc.h" |
| 30 | #include "elf/ppc64.h" |
| 31 | #include "dwarf2dbg.h" |
| 32 | #endif |
| 33 | |
| 34 | #ifdef TE_PE |
| 35 | #include "coff/pe.h" |
| 36 | #endif |
| 37 | |
| 38 | #ifdef OBJ_XCOFF |
| 39 | #include "coff/xcoff.h" |
| 40 | #include "libxcoff.h" |
| 41 | #endif |
| 42 | |
| 43 | /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */ |
| 44 | |
| 45 | /* Tell the main code what the endianness is. */ |
| 46 | extern int target_big_endian; |
| 47 | |
| 48 | /* Whether or not, we've set target_big_endian. */ |
| 49 | static int set_target_endian = 0; |
| 50 | |
| 51 | /* Whether to use user friendly register names. */ |
| 52 | #ifndef TARGET_REG_NAMES_P |
| 53 | #ifdef TE_PE |
| 54 | #define TARGET_REG_NAMES_P TRUE |
| 55 | #else |
| 56 | #define TARGET_REG_NAMES_P FALSE |
| 57 | #endif |
| 58 | #endif |
| 59 | |
| 60 | /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST, |
| 61 | HIGHESTA. */ |
| 62 | |
| 63 | /* #lo(value) denotes the least significant 16 bits of the indicated. */ |
| 64 | #define PPC_LO(v) ((v) & 0xffff) |
| 65 | |
| 66 | /* #hi(value) denotes bits 16 through 31 of the indicated value. */ |
| 67 | #define PPC_HI(v) (((v) >> 16) & 0xffff) |
| 68 | |
| 69 | /* #ha(value) denotes the high adjusted value: bits 16 through 31 of |
| 70 | the indicated value, compensating for #lo() being treated as a |
| 71 | signed number. */ |
| 72 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) |
| 73 | |
| 74 | /* #higher(value) denotes bits 32 through 47 of the indicated value. */ |
| 75 | #define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff) |
| 76 | |
| 77 | /* #highera(value) denotes bits 32 through 47 of the indicated value, |
| 78 | compensating for #lo() being treated as a signed number. */ |
| 79 | #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000) |
| 80 | |
| 81 | /* #highest(value) denotes bits 48 through 63 of the indicated value. */ |
| 82 | #define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff) |
| 83 | |
| 84 | /* #highesta(value) denotes bits 48 through 63 of the indicated value, |
| 85 | compensating for #lo being treated as a signed number. */ |
| 86 | #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000) |
| 87 | |
| 88 | #define SEX16(val) (((val) ^ 0x8000) - 0x8000) |
| 89 | |
| 90 | /* For the time being on ppc64, don't report overflow on @h and @ha |
| 91 | applied to constants. */ |
| 92 | #define REPORT_OVERFLOW_HI 0 |
| 93 | |
| 94 | static bfd_boolean reg_names_p = TARGET_REG_NAMES_P; |
| 95 | |
| 96 | static void ppc_macro (char *, const struct powerpc_macro *); |
| 97 | static void ppc_byte (int); |
| 98 | |
| 99 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) |
| 100 | static void ppc_tc (int); |
| 101 | static void ppc_machine (int); |
| 102 | #endif |
| 103 | |
| 104 | #ifdef OBJ_XCOFF |
| 105 | static void ppc_comm (int); |
| 106 | static void ppc_bb (int); |
| 107 | static void ppc_bc (int); |
| 108 | static void ppc_bf (int); |
| 109 | static void ppc_biei (int); |
| 110 | static void ppc_bs (int); |
| 111 | static void ppc_eb (int); |
| 112 | static void ppc_ec (int); |
| 113 | static void ppc_ef (int); |
| 114 | static void ppc_es (int); |
| 115 | static void ppc_csect (int); |
| 116 | static void ppc_dwsect (int); |
| 117 | static void ppc_change_csect (symbolS *, offsetT); |
| 118 | static void ppc_function (int); |
| 119 | static void ppc_extern (int); |
| 120 | static void ppc_lglobl (int); |
| 121 | static void ppc_ref (int); |
| 122 | static void ppc_section (int); |
| 123 | static void ppc_named_section (int); |
| 124 | static void ppc_stabx (int); |
| 125 | static void ppc_rename (int); |
| 126 | static void ppc_toc (int); |
| 127 | static void ppc_xcoff_cons (int); |
| 128 | static void ppc_vbyte (int); |
| 129 | #endif |
| 130 | |
| 131 | #ifdef OBJ_ELF |
| 132 | static void ppc_elf_rdata (int); |
| 133 | static void ppc_elf_lcomm (int); |
| 134 | static void ppc_elf_localentry (int); |
| 135 | static void ppc_elf_abiversion (int); |
| 136 | #endif |
| 137 | |
| 138 | #ifdef TE_PE |
| 139 | static void ppc_previous (int); |
| 140 | static void ppc_pdata (int); |
| 141 | static void ppc_ydata (int); |
| 142 | static void ppc_reldata (int); |
| 143 | static void ppc_rdata (int); |
| 144 | static void ppc_ualong (int); |
| 145 | static void ppc_znop (int); |
| 146 | static void ppc_pe_comm (int); |
| 147 | static void ppc_pe_section (int); |
| 148 | static void ppc_pe_function (int); |
| 149 | static void ppc_pe_tocd (int); |
| 150 | #endif |
| 151 | \f |
| 152 | /* Generic assembler global variables which must be defined by all |
| 153 | targets. */ |
| 154 | |
| 155 | #ifdef OBJ_ELF |
| 156 | /* This string holds the chars that always start a comment. If the |
| 157 | pre-processor is disabled, these aren't very useful. The macro |
| 158 | tc_comment_chars points to this. We use this, rather than the |
| 159 | usual comment_chars, so that we can switch for Solaris conventions. */ |
| 160 | static const char ppc_solaris_comment_chars[] = "#!"; |
| 161 | static const char ppc_eabi_comment_chars[] = "#"; |
| 162 | |
| 163 | #ifdef TARGET_SOLARIS_COMMENT |
| 164 | const char *ppc_comment_chars = ppc_solaris_comment_chars; |
| 165 | #else |
| 166 | const char *ppc_comment_chars = ppc_eabi_comment_chars; |
| 167 | #endif |
| 168 | #else |
| 169 | const char comment_chars[] = "#"; |
| 170 | #endif |
| 171 | |
| 172 | /* Characters which start a comment at the beginning of a line. */ |
| 173 | const char line_comment_chars[] = "#"; |
| 174 | |
| 175 | /* Characters which may be used to separate multiple commands on a |
| 176 | single line. */ |
| 177 | const char line_separator_chars[] = ";"; |
| 178 | |
| 179 | /* Characters which are used to indicate an exponent in a floating |
| 180 | point number. */ |
| 181 | const char EXP_CHARS[] = "eE"; |
| 182 | |
| 183 | /* Characters which mean that a number is a floating point constant, |
| 184 | as in 0d1.0. */ |
| 185 | const char FLT_CHARS[] = "dD"; |
| 186 | |
| 187 | /* Anything that can start an operand needs to be mentioned here, |
| 188 | to stop the input scrubber eating whitespace. */ |
| 189 | const char ppc_symbol_chars[] = "%["; |
| 190 | |
| 191 | /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */ |
| 192 | int ppc_cie_data_alignment; |
| 193 | |
| 194 | /* The dwarf2 minimum instruction length. */ |
| 195 | int ppc_dwarf2_line_min_insn_length; |
| 196 | |
| 197 | /* More than this number of nops in an alignment op gets a branch |
| 198 | instead. */ |
| 199 | unsigned long nop_limit = 4; |
| 200 | |
| 201 | /* The type of processor we are assembling for. This is one or more |
| 202 | of the PPC_OPCODE flags defined in opcode/ppc.h. */ |
| 203 | ppc_cpu_t ppc_cpu = 0; |
| 204 | ppc_cpu_t sticky = 0; |
| 205 | |
| 206 | /* Value for ELF e_flags EF_PPC64_ABI. */ |
| 207 | unsigned int ppc_abiversion = 0; |
| 208 | |
| 209 | /* Flags set on encountering toc relocs. */ |
| 210 | enum { |
| 211 | has_large_toc_reloc = 1, |
| 212 | has_small_toc_reloc = 2 |
| 213 | } toc_reloc_types; |
| 214 | |
| 215 | /* Warn on emitting data to code sections. */ |
| 216 | int warn_476; |
| 217 | unsigned long last_insn; |
| 218 | segT last_seg; |
| 219 | subsegT last_subseg; |
| 220 | \f |
| 221 | /* The target specific pseudo-ops which we support. */ |
| 222 | |
| 223 | const pseudo_typeS md_pseudo_table[] = |
| 224 | { |
| 225 | /* Pseudo-ops which must be overridden. */ |
| 226 | { "byte", ppc_byte, 0 }, |
| 227 | |
| 228 | #ifdef OBJ_XCOFF |
| 229 | /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these |
| 230 | legitimately belong in the obj-*.c file. However, XCOFF is based |
| 231 | on COFF, and is only implemented for the RS/6000. We just use |
| 232 | obj-coff.c, and add what we need here. */ |
| 233 | { "comm", ppc_comm, 0 }, |
| 234 | { "lcomm", ppc_comm, 1 }, |
| 235 | { "bb", ppc_bb, 0 }, |
| 236 | { "bc", ppc_bc, 0 }, |
| 237 | { "bf", ppc_bf, 0 }, |
| 238 | { "bi", ppc_biei, 0 }, |
| 239 | { "bs", ppc_bs, 0 }, |
| 240 | { "csect", ppc_csect, 0 }, |
| 241 | { "dwsect", ppc_dwsect, 0 }, |
| 242 | { "data", ppc_section, 'd' }, |
| 243 | { "eb", ppc_eb, 0 }, |
| 244 | { "ec", ppc_ec, 0 }, |
| 245 | { "ef", ppc_ef, 0 }, |
| 246 | { "ei", ppc_biei, 1 }, |
| 247 | { "es", ppc_es, 0 }, |
| 248 | { "extern", ppc_extern, 0 }, |
| 249 | { "function", ppc_function, 0 }, |
| 250 | { "lglobl", ppc_lglobl, 0 }, |
| 251 | { "ref", ppc_ref, 0 }, |
| 252 | { "rename", ppc_rename, 0 }, |
| 253 | { "section", ppc_named_section, 0 }, |
| 254 | { "stabx", ppc_stabx, 0 }, |
| 255 | { "text", ppc_section, 't' }, |
| 256 | { "toc", ppc_toc, 0 }, |
| 257 | { "long", ppc_xcoff_cons, 2 }, |
| 258 | { "llong", ppc_xcoff_cons, 3 }, |
| 259 | { "word", ppc_xcoff_cons, 1 }, |
| 260 | { "short", ppc_xcoff_cons, 1 }, |
| 261 | { "vbyte", ppc_vbyte, 0 }, |
| 262 | #endif |
| 263 | |
| 264 | #ifdef OBJ_ELF |
| 265 | { "llong", cons, 8 }, |
| 266 | { "rdata", ppc_elf_rdata, 0 }, |
| 267 | { "rodata", ppc_elf_rdata, 0 }, |
| 268 | { "lcomm", ppc_elf_lcomm, 0 }, |
| 269 | { "localentry", ppc_elf_localentry, 0 }, |
| 270 | { "abiversion", ppc_elf_abiversion, 0 }, |
| 271 | #endif |
| 272 | |
| 273 | #ifdef TE_PE |
| 274 | /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */ |
| 275 | { "previous", ppc_previous, 0 }, |
| 276 | { "pdata", ppc_pdata, 0 }, |
| 277 | { "ydata", ppc_ydata, 0 }, |
| 278 | { "reldata", ppc_reldata, 0 }, |
| 279 | { "rdata", ppc_rdata, 0 }, |
| 280 | { "ualong", ppc_ualong, 0 }, |
| 281 | { "znop", ppc_znop, 0 }, |
| 282 | { "comm", ppc_pe_comm, 0 }, |
| 283 | { "lcomm", ppc_pe_comm, 1 }, |
| 284 | { "section", ppc_pe_section, 0 }, |
| 285 | { "function", ppc_pe_function,0 }, |
| 286 | { "tocd", ppc_pe_tocd, 0 }, |
| 287 | #endif |
| 288 | |
| 289 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) |
| 290 | { "tc", ppc_tc, 0 }, |
| 291 | { "machine", ppc_machine, 0 }, |
| 292 | #endif |
| 293 | |
| 294 | { NULL, NULL, 0 } |
| 295 | }; |
| 296 | |
| 297 | \f |
| 298 | /* Predefined register names if -mregnames (or default for Windows NT). |
| 299 | In general, there are lots of them, in an attempt to be compatible |
| 300 | with a number of other Windows NT assemblers. */ |
| 301 | |
| 302 | /* Structure to hold information about predefined registers. */ |
| 303 | struct pd_reg |
| 304 | { |
| 305 | char *name; |
| 306 | int value; |
| 307 | }; |
| 308 | |
| 309 | /* List of registers that are pre-defined: |
| 310 | |
| 311 | Each general register has predefined names of the form: |
| 312 | 1. r<reg_num> which has the value <reg_num>. |
| 313 | 2. r.<reg_num> which has the value <reg_num>. |
| 314 | |
| 315 | Each floating point register has predefined names of the form: |
| 316 | 1. f<reg_num> which has the value <reg_num>. |
| 317 | 2. f.<reg_num> which has the value <reg_num>. |
| 318 | |
| 319 | Each vector unit register has predefined names of the form: |
| 320 | 1. v<reg_num> which has the value <reg_num>. |
| 321 | 2. v.<reg_num> which has the value <reg_num>. |
| 322 | |
| 323 | Each condition register has predefined names of the form: |
| 324 | 1. cr<reg_num> which has the value <reg_num>. |
| 325 | 2. cr.<reg_num> which has the value <reg_num>. |
| 326 | |
| 327 | There are individual registers as well: |
| 328 | sp or r.sp has the value 1 |
| 329 | rtoc or r.toc has the value 2 |
| 330 | fpscr has the value 0 |
| 331 | xer has the value 1 |
| 332 | lr has the value 8 |
| 333 | ctr has the value 9 |
| 334 | pmr has the value 0 |
| 335 | dar has the value 19 |
| 336 | dsisr has the value 18 |
| 337 | dec has the value 22 |
| 338 | sdr1 has the value 25 |
| 339 | srr0 has the value 26 |
| 340 | srr1 has the value 27 |
| 341 | |
| 342 | The table is sorted. Suitable for searching by a binary search. */ |
| 343 | |
| 344 | static const struct pd_reg pre_defined_registers[] = |
| 345 | { |
| 346 | { "cr.0", 0 }, /* Condition Registers */ |
| 347 | { "cr.1", 1 }, |
| 348 | { "cr.2", 2 }, |
| 349 | { "cr.3", 3 }, |
| 350 | { "cr.4", 4 }, |
| 351 | { "cr.5", 5 }, |
| 352 | { "cr.6", 6 }, |
| 353 | { "cr.7", 7 }, |
| 354 | |
| 355 | { "cr0", 0 }, |
| 356 | { "cr1", 1 }, |
| 357 | { "cr2", 2 }, |
| 358 | { "cr3", 3 }, |
| 359 | { "cr4", 4 }, |
| 360 | { "cr5", 5 }, |
| 361 | { "cr6", 6 }, |
| 362 | { "cr7", 7 }, |
| 363 | |
| 364 | { "ctr", 9 }, |
| 365 | |
| 366 | { "dar", 19 }, /* Data Access Register */ |
| 367 | { "dec", 22 }, /* Decrementer */ |
| 368 | { "dsisr", 18 }, /* Data Storage Interrupt Status Register */ |
| 369 | |
| 370 | { "f.0", 0 }, /* Floating point registers */ |
| 371 | { "f.1", 1 }, |
| 372 | { "f.10", 10 }, |
| 373 | { "f.11", 11 }, |
| 374 | { "f.12", 12 }, |
| 375 | { "f.13", 13 }, |
| 376 | { "f.14", 14 }, |
| 377 | { "f.15", 15 }, |
| 378 | { "f.16", 16 }, |
| 379 | { "f.17", 17 }, |
| 380 | { "f.18", 18 }, |
| 381 | { "f.19", 19 }, |
| 382 | { "f.2", 2 }, |
| 383 | { "f.20", 20 }, |
| 384 | { "f.21", 21 }, |
| 385 | { "f.22", 22 }, |
| 386 | { "f.23", 23 }, |
| 387 | { "f.24", 24 }, |
| 388 | { "f.25", 25 }, |
| 389 | { "f.26", 26 }, |
| 390 | { "f.27", 27 }, |
| 391 | { "f.28", 28 }, |
| 392 | { "f.29", 29 }, |
| 393 | { "f.3", 3 }, |
| 394 | { "f.30", 30 }, |
| 395 | { "f.31", 31 }, |
| 396 | |
| 397 | { "f.32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */ |
| 398 | { "f.33", 33 }, |
| 399 | { "f.34", 34 }, |
| 400 | { "f.35", 35 }, |
| 401 | { "f.36", 36 }, |
| 402 | { "f.37", 37 }, |
| 403 | { "f.38", 38 }, |
| 404 | { "f.39", 39 }, |
| 405 | { "f.4", 4 }, |
| 406 | { "f.40", 40 }, |
| 407 | { "f.41", 41 }, |
| 408 | { "f.42", 42 }, |
| 409 | { "f.43", 43 }, |
| 410 | { "f.44", 44 }, |
| 411 | { "f.45", 45 }, |
| 412 | { "f.46", 46 }, |
| 413 | { "f.47", 47 }, |
| 414 | { "f.48", 48 }, |
| 415 | { "f.49", 49 }, |
| 416 | { "f.5", 5 }, |
| 417 | { "f.50", 50 }, |
| 418 | { "f.51", 51 }, |
| 419 | { "f.52", 52 }, |
| 420 | { "f.53", 53 }, |
| 421 | { "f.54", 54 }, |
| 422 | { "f.55", 55 }, |
| 423 | { "f.56", 56 }, |
| 424 | { "f.57", 57 }, |
| 425 | { "f.58", 58 }, |
| 426 | { "f.59", 59 }, |
| 427 | { "f.6", 6 }, |
| 428 | { "f.60", 60 }, |
| 429 | { "f.61", 61 }, |
| 430 | { "f.62", 62 }, |
| 431 | { "f.63", 63 }, |
| 432 | { "f.7", 7 }, |
| 433 | { "f.8", 8 }, |
| 434 | { "f.9", 9 }, |
| 435 | |
| 436 | { "f0", 0 }, |
| 437 | { "f1", 1 }, |
| 438 | { "f10", 10 }, |
| 439 | { "f11", 11 }, |
| 440 | { "f12", 12 }, |
| 441 | { "f13", 13 }, |
| 442 | { "f14", 14 }, |
| 443 | { "f15", 15 }, |
| 444 | { "f16", 16 }, |
| 445 | { "f17", 17 }, |
| 446 | { "f18", 18 }, |
| 447 | { "f19", 19 }, |
| 448 | { "f2", 2 }, |
| 449 | { "f20", 20 }, |
| 450 | { "f21", 21 }, |
| 451 | { "f22", 22 }, |
| 452 | { "f23", 23 }, |
| 453 | { "f24", 24 }, |
| 454 | { "f25", 25 }, |
| 455 | { "f26", 26 }, |
| 456 | { "f27", 27 }, |
| 457 | { "f28", 28 }, |
| 458 | { "f29", 29 }, |
| 459 | { "f3", 3 }, |
| 460 | { "f30", 30 }, |
| 461 | { "f31", 31 }, |
| 462 | |
| 463 | { "f32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */ |
| 464 | { "f33", 33 }, |
| 465 | { "f34", 34 }, |
| 466 | { "f35", 35 }, |
| 467 | { "f36", 36 }, |
| 468 | { "f37", 37 }, |
| 469 | { "f38", 38 }, |
| 470 | { "f39", 39 }, |
| 471 | { "f4", 4 }, |
| 472 | { "f40", 40 }, |
| 473 | { "f41", 41 }, |
| 474 | { "f42", 42 }, |
| 475 | { "f43", 43 }, |
| 476 | { "f44", 44 }, |
| 477 | { "f45", 45 }, |
| 478 | { "f46", 46 }, |
| 479 | { "f47", 47 }, |
| 480 | { "f48", 48 }, |
| 481 | { "f49", 49 }, |
| 482 | { "f5", 5 }, |
| 483 | { "f50", 50 }, |
| 484 | { "f51", 51 }, |
| 485 | { "f52", 52 }, |
| 486 | { "f53", 53 }, |
| 487 | { "f54", 54 }, |
| 488 | { "f55", 55 }, |
| 489 | { "f56", 56 }, |
| 490 | { "f57", 57 }, |
| 491 | { "f58", 58 }, |
| 492 | { "f59", 59 }, |
| 493 | { "f6", 6 }, |
| 494 | { "f60", 60 }, |
| 495 | { "f61", 61 }, |
| 496 | { "f62", 62 }, |
| 497 | { "f63", 63 }, |
| 498 | { "f7", 7 }, |
| 499 | { "f8", 8 }, |
| 500 | { "f9", 9 }, |
| 501 | |
| 502 | { "fpscr", 0 }, |
| 503 | |
| 504 | /* Quantization registers used with pair single instructions. */ |
| 505 | { "gqr.0", 0 }, |
| 506 | { "gqr.1", 1 }, |
| 507 | { "gqr.2", 2 }, |
| 508 | { "gqr.3", 3 }, |
| 509 | { "gqr.4", 4 }, |
| 510 | { "gqr.5", 5 }, |
| 511 | { "gqr.6", 6 }, |
| 512 | { "gqr.7", 7 }, |
| 513 | { "gqr0", 0 }, |
| 514 | { "gqr1", 1 }, |
| 515 | { "gqr2", 2 }, |
| 516 | { "gqr3", 3 }, |
| 517 | { "gqr4", 4 }, |
| 518 | { "gqr5", 5 }, |
| 519 | { "gqr6", 6 }, |
| 520 | { "gqr7", 7 }, |
| 521 | |
| 522 | { "lr", 8 }, /* Link Register */ |
| 523 | |
| 524 | { "pmr", 0 }, |
| 525 | |
| 526 | { "r.0", 0 }, /* General Purpose Registers */ |
| 527 | { "r.1", 1 }, |
| 528 | { "r.10", 10 }, |
| 529 | { "r.11", 11 }, |
| 530 | { "r.12", 12 }, |
| 531 | { "r.13", 13 }, |
| 532 | { "r.14", 14 }, |
| 533 | { "r.15", 15 }, |
| 534 | { "r.16", 16 }, |
| 535 | { "r.17", 17 }, |
| 536 | { "r.18", 18 }, |
| 537 | { "r.19", 19 }, |
| 538 | { "r.2", 2 }, |
| 539 | { "r.20", 20 }, |
| 540 | { "r.21", 21 }, |
| 541 | { "r.22", 22 }, |
| 542 | { "r.23", 23 }, |
| 543 | { "r.24", 24 }, |
| 544 | { "r.25", 25 }, |
| 545 | { "r.26", 26 }, |
| 546 | { "r.27", 27 }, |
| 547 | { "r.28", 28 }, |
| 548 | { "r.29", 29 }, |
| 549 | { "r.3", 3 }, |
| 550 | { "r.30", 30 }, |
| 551 | { "r.31", 31 }, |
| 552 | { "r.4", 4 }, |
| 553 | { "r.5", 5 }, |
| 554 | { "r.6", 6 }, |
| 555 | { "r.7", 7 }, |
| 556 | { "r.8", 8 }, |
| 557 | { "r.9", 9 }, |
| 558 | |
| 559 | { "r.sp", 1 }, /* Stack Pointer */ |
| 560 | |
| 561 | { "r.toc", 2 }, /* Pointer to the table of contents */ |
| 562 | |
| 563 | { "r0", 0 }, /* More general purpose registers */ |
| 564 | { "r1", 1 }, |
| 565 | { "r10", 10 }, |
| 566 | { "r11", 11 }, |
| 567 | { "r12", 12 }, |
| 568 | { "r13", 13 }, |
| 569 | { "r14", 14 }, |
| 570 | { "r15", 15 }, |
| 571 | { "r16", 16 }, |
| 572 | { "r17", 17 }, |
| 573 | { "r18", 18 }, |
| 574 | { "r19", 19 }, |
| 575 | { "r2", 2 }, |
| 576 | { "r20", 20 }, |
| 577 | { "r21", 21 }, |
| 578 | { "r22", 22 }, |
| 579 | { "r23", 23 }, |
| 580 | { "r24", 24 }, |
| 581 | { "r25", 25 }, |
| 582 | { "r26", 26 }, |
| 583 | { "r27", 27 }, |
| 584 | { "r28", 28 }, |
| 585 | { "r29", 29 }, |
| 586 | { "r3", 3 }, |
| 587 | { "r30", 30 }, |
| 588 | { "r31", 31 }, |
| 589 | { "r4", 4 }, |
| 590 | { "r5", 5 }, |
| 591 | { "r6", 6 }, |
| 592 | { "r7", 7 }, |
| 593 | { "r8", 8 }, |
| 594 | { "r9", 9 }, |
| 595 | |
| 596 | { "rtoc", 2 }, /* Table of contents */ |
| 597 | |
| 598 | { "sdr1", 25 }, /* Storage Description Register 1 */ |
| 599 | |
| 600 | { "sp", 1 }, |
| 601 | |
| 602 | { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */ |
| 603 | { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */ |
| 604 | |
| 605 | { "v.0", 0 }, /* Vector (Altivec/VMX) registers */ |
| 606 | { "v.1", 1 }, |
| 607 | { "v.10", 10 }, |
| 608 | { "v.11", 11 }, |
| 609 | { "v.12", 12 }, |
| 610 | { "v.13", 13 }, |
| 611 | { "v.14", 14 }, |
| 612 | { "v.15", 15 }, |
| 613 | { "v.16", 16 }, |
| 614 | { "v.17", 17 }, |
| 615 | { "v.18", 18 }, |
| 616 | { "v.19", 19 }, |
| 617 | { "v.2", 2 }, |
| 618 | { "v.20", 20 }, |
| 619 | { "v.21", 21 }, |
| 620 | { "v.22", 22 }, |
| 621 | { "v.23", 23 }, |
| 622 | { "v.24", 24 }, |
| 623 | { "v.25", 25 }, |
| 624 | { "v.26", 26 }, |
| 625 | { "v.27", 27 }, |
| 626 | { "v.28", 28 }, |
| 627 | { "v.29", 29 }, |
| 628 | { "v.3", 3 }, |
| 629 | { "v.30", 30 }, |
| 630 | { "v.31", 31 }, |
| 631 | { "v.4", 4 }, |
| 632 | { "v.5", 5 }, |
| 633 | { "v.6", 6 }, |
| 634 | { "v.7", 7 }, |
| 635 | { "v.8", 8 }, |
| 636 | { "v.9", 9 }, |
| 637 | |
| 638 | { "v0", 0 }, |
| 639 | { "v1", 1 }, |
| 640 | { "v10", 10 }, |
| 641 | { "v11", 11 }, |
| 642 | { "v12", 12 }, |
| 643 | { "v13", 13 }, |
| 644 | { "v14", 14 }, |
| 645 | { "v15", 15 }, |
| 646 | { "v16", 16 }, |
| 647 | { "v17", 17 }, |
| 648 | { "v18", 18 }, |
| 649 | { "v19", 19 }, |
| 650 | { "v2", 2 }, |
| 651 | { "v20", 20 }, |
| 652 | { "v21", 21 }, |
| 653 | { "v22", 22 }, |
| 654 | { "v23", 23 }, |
| 655 | { "v24", 24 }, |
| 656 | { "v25", 25 }, |
| 657 | { "v26", 26 }, |
| 658 | { "v27", 27 }, |
| 659 | { "v28", 28 }, |
| 660 | { "v29", 29 }, |
| 661 | { "v3", 3 }, |
| 662 | { "v30", 30 }, |
| 663 | { "v31", 31 }, |
| 664 | { "v4", 4 }, |
| 665 | { "v5", 5 }, |
| 666 | { "v6", 6 }, |
| 667 | { "v7", 7 }, |
| 668 | { "v8", 8 }, |
| 669 | { "v9", 9 }, |
| 670 | |
| 671 | { "vs.0", 0 }, /* Vector Scalar (VSX) registers (ISA 2.06). */ |
| 672 | { "vs.1", 1 }, |
| 673 | { "vs.10", 10 }, |
| 674 | { "vs.11", 11 }, |
| 675 | { "vs.12", 12 }, |
| 676 | { "vs.13", 13 }, |
| 677 | { "vs.14", 14 }, |
| 678 | { "vs.15", 15 }, |
| 679 | { "vs.16", 16 }, |
| 680 | { "vs.17", 17 }, |
| 681 | { "vs.18", 18 }, |
| 682 | { "vs.19", 19 }, |
| 683 | { "vs.2", 2 }, |
| 684 | { "vs.20", 20 }, |
| 685 | { "vs.21", 21 }, |
| 686 | { "vs.22", 22 }, |
| 687 | { "vs.23", 23 }, |
| 688 | { "vs.24", 24 }, |
| 689 | { "vs.25", 25 }, |
| 690 | { "vs.26", 26 }, |
| 691 | { "vs.27", 27 }, |
| 692 | { "vs.28", 28 }, |
| 693 | { "vs.29", 29 }, |
| 694 | { "vs.3", 3 }, |
| 695 | { "vs.30", 30 }, |
| 696 | { "vs.31", 31 }, |
| 697 | { "vs.32", 32 }, |
| 698 | { "vs.33", 33 }, |
| 699 | { "vs.34", 34 }, |
| 700 | { "vs.35", 35 }, |
| 701 | { "vs.36", 36 }, |
| 702 | { "vs.37", 37 }, |
| 703 | { "vs.38", 38 }, |
| 704 | { "vs.39", 39 }, |
| 705 | { "vs.4", 4 }, |
| 706 | { "vs.40", 40 }, |
| 707 | { "vs.41", 41 }, |
| 708 | { "vs.42", 42 }, |
| 709 | { "vs.43", 43 }, |
| 710 | { "vs.44", 44 }, |
| 711 | { "vs.45", 45 }, |
| 712 | { "vs.46", 46 }, |
| 713 | { "vs.47", 47 }, |
| 714 | { "vs.48", 48 }, |
| 715 | { "vs.49", 49 }, |
| 716 | { "vs.5", 5 }, |
| 717 | { "vs.50", 50 }, |
| 718 | { "vs.51", 51 }, |
| 719 | { "vs.52", 52 }, |
| 720 | { "vs.53", 53 }, |
| 721 | { "vs.54", 54 }, |
| 722 | { "vs.55", 55 }, |
| 723 | { "vs.56", 56 }, |
| 724 | { "vs.57", 57 }, |
| 725 | { "vs.58", 58 }, |
| 726 | { "vs.59", 59 }, |
| 727 | { "vs.6", 6 }, |
| 728 | { "vs.60", 60 }, |
| 729 | { "vs.61", 61 }, |
| 730 | { "vs.62", 62 }, |
| 731 | { "vs.63", 63 }, |
| 732 | { "vs.7", 7 }, |
| 733 | { "vs.8", 8 }, |
| 734 | { "vs.9", 9 }, |
| 735 | |
| 736 | { "vs0", 0 }, |
| 737 | { "vs1", 1 }, |
| 738 | { "vs10", 10 }, |
| 739 | { "vs11", 11 }, |
| 740 | { "vs12", 12 }, |
| 741 | { "vs13", 13 }, |
| 742 | { "vs14", 14 }, |
| 743 | { "vs15", 15 }, |
| 744 | { "vs16", 16 }, |
| 745 | { "vs17", 17 }, |
| 746 | { "vs18", 18 }, |
| 747 | { "vs19", 19 }, |
| 748 | { "vs2", 2 }, |
| 749 | { "vs20", 20 }, |
| 750 | { "vs21", 21 }, |
| 751 | { "vs22", 22 }, |
| 752 | { "vs23", 23 }, |
| 753 | { "vs24", 24 }, |
| 754 | { "vs25", 25 }, |
| 755 | { "vs26", 26 }, |
| 756 | { "vs27", 27 }, |
| 757 | { "vs28", 28 }, |
| 758 | { "vs29", 29 }, |
| 759 | { "vs3", 3 }, |
| 760 | { "vs30", 30 }, |
| 761 | { "vs31", 31 }, |
| 762 | { "vs32", 32 }, |
| 763 | { "vs33", 33 }, |
| 764 | { "vs34", 34 }, |
| 765 | { "vs35", 35 }, |
| 766 | { "vs36", 36 }, |
| 767 | { "vs37", 37 }, |
| 768 | { "vs38", 38 }, |
| 769 | { "vs39", 39 }, |
| 770 | { "vs4", 4 }, |
| 771 | { "vs40", 40 }, |
| 772 | { "vs41", 41 }, |
| 773 | { "vs42", 42 }, |
| 774 | { "vs43", 43 }, |
| 775 | { "vs44", 44 }, |
| 776 | { "vs45", 45 }, |
| 777 | { "vs46", 46 }, |
| 778 | { "vs47", 47 }, |
| 779 | { "vs48", 48 }, |
| 780 | { "vs49", 49 }, |
| 781 | { "vs5", 5 }, |
| 782 | { "vs50", 50 }, |
| 783 | { "vs51", 51 }, |
| 784 | { "vs52", 52 }, |
| 785 | { "vs53", 53 }, |
| 786 | { "vs54", 54 }, |
| 787 | { "vs55", 55 }, |
| 788 | { "vs56", 56 }, |
| 789 | { "vs57", 57 }, |
| 790 | { "vs58", 58 }, |
| 791 | { "vs59", 59 }, |
| 792 | { "vs6", 6 }, |
| 793 | { "vs60", 60 }, |
| 794 | { "vs61", 61 }, |
| 795 | { "vs62", 62 }, |
| 796 | { "vs63", 63 }, |
| 797 | { "vs7", 7 }, |
| 798 | { "vs8", 8 }, |
| 799 | { "vs9", 9 }, |
| 800 | |
| 801 | { "xer", 1 }, |
| 802 | |
| 803 | }; |
| 804 | |
| 805 | #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg)) |
| 806 | |
| 807 | /* Given NAME, find the register number associated with that name, return |
| 808 | the integer value associated with the given name or -1 on failure. */ |
| 809 | |
| 810 | static int |
| 811 | reg_name_search (const struct pd_reg *regs, int regcount, const char *name) |
| 812 | { |
| 813 | int middle, low, high; |
| 814 | int cmp; |
| 815 | |
| 816 | low = 0; |
| 817 | high = regcount - 1; |
| 818 | |
| 819 | do |
| 820 | { |
| 821 | middle = (low + high) / 2; |
| 822 | cmp = strcasecmp (name, regs[middle].name); |
| 823 | if (cmp < 0) |
| 824 | high = middle - 1; |
| 825 | else if (cmp > 0) |
| 826 | low = middle + 1; |
| 827 | else |
| 828 | return regs[middle].value; |
| 829 | } |
| 830 | while (low <= high); |
| 831 | |
| 832 | return -1; |
| 833 | } |
| 834 | |
| 835 | /* |
| 836 | * Summary of register_name. |
| 837 | * |
| 838 | * in: Input_line_pointer points to 1st char of operand. |
| 839 | * |
| 840 | * out: A expressionS. |
| 841 | * The operand may have been a register: in this case, X_op == O_register, |
| 842 | * X_add_number is set to the register number, and truth is returned. |
| 843 | * Input_line_pointer->(next non-blank) char after operand, or is in its |
| 844 | * original state. |
| 845 | */ |
| 846 | |
| 847 | static bfd_boolean |
| 848 | register_name (expressionS *expressionP) |
| 849 | { |
| 850 | int reg_number; |
| 851 | char *name; |
| 852 | char *start; |
| 853 | char c; |
| 854 | |
| 855 | /* Find the spelling of the operand. */ |
| 856 | start = name = input_line_pointer; |
| 857 | if (name[0] == '%' && ISALPHA (name[1])) |
| 858 | name = ++input_line_pointer; |
| 859 | |
| 860 | else if (!reg_names_p || !ISALPHA (name[0])) |
| 861 | return FALSE; |
| 862 | |
| 863 | c = get_symbol_end (); |
| 864 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name); |
| 865 | |
| 866 | /* Put back the delimiting char. */ |
| 867 | *input_line_pointer = c; |
| 868 | |
| 869 | /* Look to see if it's in the register table. */ |
| 870 | if (reg_number >= 0) |
| 871 | { |
| 872 | expressionP->X_op = O_register; |
| 873 | expressionP->X_add_number = reg_number; |
| 874 | |
| 875 | /* Make the rest nice. */ |
| 876 | expressionP->X_add_symbol = NULL; |
| 877 | expressionP->X_op_symbol = NULL; |
| 878 | return TRUE; |
| 879 | } |
| 880 | |
| 881 | /* Reset the line as if we had not done anything. */ |
| 882 | input_line_pointer = start; |
| 883 | return FALSE; |
| 884 | } |
| 885 | \f |
| 886 | /* This function is called for each symbol seen in an expression. It |
| 887 | handles the special parsing which PowerPC assemblers are supposed |
| 888 | to use for condition codes. */ |
| 889 | |
| 890 | /* Whether to do the special parsing. */ |
| 891 | static bfd_boolean cr_operand; |
| 892 | |
| 893 | /* Names to recognize in a condition code. This table is sorted. */ |
| 894 | static const struct pd_reg cr_names[] = |
| 895 | { |
| 896 | { "cr0", 0 }, |
| 897 | { "cr1", 1 }, |
| 898 | { "cr2", 2 }, |
| 899 | { "cr3", 3 }, |
| 900 | { "cr4", 4 }, |
| 901 | { "cr5", 5 }, |
| 902 | { "cr6", 6 }, |
| 903 | { "cr7", 7 }, |
| 904 | { "eq", 2 }, |
| 905 | { "gt", 1 }, |
| 906 | { "lt", 0 }, |
| 907 | { "so", 3 }, |
| 908 | { "un", 3 } |
| 909 | }; |
| 910 | |
| 911 | /* Parsing function. This returns non-zero if it recognized an |
| 912 | expression. */ |
| 913 | |
| 914 | int |
| 915 | ppc_parse_name (const char *name, expressionS *exp) |
| 916 | { |
| 917 | int val; |
| 918 | |
| 919 | if (! cr_operand) |
| 920 | return 0; |
| 921 | |
| 922 | if (*name == '%') |
| 923 | ++name; |
| 924 | val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0], |
| 925 | name); |
| 926 | if (val < 0) |
| 927 | return 0; |
| 928 | |
| 929 | exp->X_op = O_constant; |
| 930 | exp->X_add_number = val; |
| 931 | |
| 932 | return 1; |
| 933 | } |
| 934 | \f |
| 935 | /* Local variables. */ |
| 936 | |
| 937 | /* Whether to target xcoff64/elf64. */ |
| 938 | static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64; |
| 939 | |
| 940 | /* Opcode hash table. */ |
| 941 | static struct hash_control *ppc_hash; |
| 942 | |
| 943 | /* Macro hash table. */ |
| 944 | static struct hash_control *ppc_macro_hash; |
| 945 | |
| 946 | #ifdef OBJ_ELF |
| 947 | /* What type of shared library support to use. */ |
| 948 | static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE; |
| 949 | |
| 950 | /* Flags to set in the elf header. */ |
| 951 | static flagword ppc_flags = 0; |
| 952 | |
| 953 | /* Whether this is Solaris or not. */ |
| 954 | #ifdef TARGET_SOLARIS_COMMENT |
| 955 | #define SOLARIS_P TRUE |
| 956 | #else |
| 957 | #define SOLARIS_P FALSE |
| 958 | #endif |
| 959 | |
| 960 | static bfd_boolean msolaris = SOLARIS_P; |
| 961 | #endif |
| 962 | |
| 963 | #ifdef OBJ_XCOFF |
| 964 | |
| 965 | /* The RS/6000 assembler uses the .csect pseudo-op to generate code |
| 966 | using a bunch of different sections. These assembler sections, |
| 967 | however, are all encompassed within the .text or .data sections of |
| 968 | the final output file. We handle this by using different |
| 969 | subsegments within these main segments. */ |
| 970 | |
| 971 | /* Next subsegment to allocate within the .text segment. */ |
| 972 | static subsegT ppc_text_subsegment = 2; |
| 973 | |
| 974 | /* Linked list of csects in the text section. */ |
| 975 | static symbolS *ppc_text_csects; |
| 976 | |
| 977 | /* Next subsegment to allocate within the .data segment. */ |
| 978 | static subsegT ppc_data_subsegment = 2; |
| 979 | |
| 980 | /* Linked list of csects in the data section. */ |
| 981 | static symbolS *ppc_data_csects; |
| 982 | |
| 983 | /* The current csect. */ |
| 984 | static symbolS *ppc_current_csect; |
| 985 | |
| 986 | /* The RS/6000 assembler uses a TOC which holds addresses of functions |
| 987 | and variables. Symbols are put in the TOC with the .tc pseudo-op. |
| 988 | A special relocation is used when accessing TOC entries. We handle |
| 989 | the TOC as a subsegment within the .data segment. We set it up if |
| 990 | we see a .toc pseudo-op, and save the csect symbol here. */ |
| 991 | static symbolS *ppc_toc_csect; |
| 992 | |
| 993 | /* The first frag in the TOC subsegment. */ |
| 994 | static fragS *ppc_toc_frag; |
| 995 | |
| 996 | /* The first frag in the first subsegment after the TOC in the .data |
| 997 | segment. NULL if there are no subsegments after the TOC. */ |
| 998 | static fragS *ppc_after_toc_frag; |
| 999 | |
| 1000 | /* The current static block. */ |
| 1001 | static symbolS *ppc_current_block; |
| 1002 | |
| 1003 | /* The COFF debugging section; set by md_begin. This is not the |
| 1004 | .debug section, but is instead the secret BFD section which will |
| 1005 | cause BFD to set the section number of a symbol to N_DEBUG. */ |
| 1006 | static asection *ppc_coff_debug_section; |
| 1007 | |
| 1008 | /* Structure to set the length field of the dwarf sections. */ |
| 1009 | struct dw_subsection { |
| 1010 | /* Subsections are simply linked. */ |
| 1011 | struct dw_subsection *link; |
| 1012 | |
| 1013 | /* The subsection number. */ |
| 1014 | subsegT subseg; |
| 1015 | |
| 1016 | /* Expression to compute the length of the section. */ |
| 1017 | expressionS end_exp; |
| 1018 | }; |
| 1019 | |
| 1020 | static struct dw_section { |
| 1021 | /* Corresponding section. */ |
| 1022 | segT sect; |
| 1023 | |
| 1024 | /* Simply linked list of subsections with a label. */ |
| 1025 | struct dw_subsection *list_subseg; |
| 1026 | |
| 1027 | /* The anonymous subsection. */ |
| 1028 | struct dw_subsection *anon_subseg; |
| 1029 | } dw_sections[XCOFF_DWSECT_NBR_NAMES]; |
| 1030 | #endif /* OBJ_XCOFF */ |
| 1031 | |
| 1032 | #ifdef TE_PE |
| 1033 | |
| 1034 | /* Various sections that we need for PE coff support. */ |
| 1035 | static segT ydata_section; |
| 1036 | static segT pdata_section; |
| 1037 | static segT reldata_section; |
| 1038 | static segT rdata_section; |
| 1039 | static segT tocdata_section; |
| 1040 | |
| 1041 | /* The current section and the previous section. See ppc_previous. */ |
| 1042 | static segT ppc_previous_section; |
| 1043 | static segT ppc_current_section; |
| 1044 | |
| 1045 | #endif /* TE_PE */ |
| 1046 | |
| 1047 | #ifdef OBJ_ELF |
| 1048 | symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */ |
| 1049 | #define PPC_APUINFO_ISEL 0x40 |
| 1050 | #define PPC_APUINFO_PMR 0x41 |
| 1051 | #define PPC_APUINFO_RFMCI 0x42 |
| 1052 | #define PPC_APUINFO_CACHELCK 0x43 |
| 1053 | #define PPC_APUINFO_SPE 0x100 |
| 1054 | #define PPC_APUINFO_EFS 0x101 |
| 1055 | #define PPC_APUINFO_BRLOCK 0x102 |
| 1056 | #define PPC_APUINFO_VLE 0x104 |
| 1057 | |
| 1058 | /* |
| 1059 | * We keep a list of APUinfo |
| 1060 | */ |
| 1061 | unsigned long *ppc_apuinfo_list; |
| 1062 | unsigned int ppc_apuinfo_num; |
| 1063 | unsigned int ppc_apuinfo_num_alloc; |
| 1064 | #endif /* OBJ_ELF */ |
| 1065 | \f |
| 1066 | #ifdef OBJ_ELF |
| 1067 | const char *const md_shortopts = "b:l:usm:K:VQ:"; |
| 1068 | #else |
| 1069 | const char *const md_shortopts = "um:"; |
| 1070 | #endif |
| 1071 | #define OPTION_NOPS (OPTION_MD_BASE + 0) |
| 1072 | const struct option md_longopts[] = { |
| 1073 | {"nops", required_argument, NULL, OPTION_NOPS}, |
| 1074 | {"ppc476-workaround", no_argument, &warn_476, 1}, |
| 1075 | {"no-ppc476-workaround", no_argument, &warn_476, 0}, |
| 1076 | {NULL, no_argument, NULL, 0} |
| 1077 | }; |
| 1078 | const size_t md_longopts_size = sizeof (md_longopts); |
| 1079 | |
| 1080 | int |
| 1081 | md_parse_option (int c, char *arg) |
| 1082 | { |
| 1083 | ppc_cpu_t new_cpu; |
| 1084 | |
| 1085 | switch (c) |
| 1086 | { |
| 1087 | case 'u': |
| 1088 | /* -u means that any undefined symbols should be treated as |
| 1089 | external, which is the default for gas anyhow. */ |
| 1090 | break; |
| 1091 | |
| 1092 | #ifdef OBJ_ELF |
| 1093 | case 'l': |
| 1094 | /* Solaris as takes -le (presumably for little endian). For completeness |
| 1095 | sake, recognize -be also. */ |
| 1096 | if (strcmp (arg, "e") == 0) |
| 1097 | { |
| 1098 | target_big_endian = 0; |
| 1099 | set_target_endian = 1; |
| 1100 | if (ppc_cpu & PPC_OPCODE_VLE) |
| 1101 | as_bad (_("the use of -mvle requires big endian.")); |
| 1102 | } |
| 1103 | else |
| 1104 | return 0; |
| 1105 | |
| 1106 | break; |
| 1107 | |
| 1108 | case 'b': |
| 1109 | if (strcmp (arg, "e") == 0) |
| 1110 | { |
| 1111 | target_big_endian = 1; |
| 1112 | set_target_endian = 1; |
| 1113 | } |
| 1114 | else |
| 1115 | return 0; |
| 1116 | |
| 1117 | break; |
| 1118 | |
| 1119 | case 'K': |
| 1120 | /* Recognize -K PIC. */ |
| 1121 | if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0) |
| 1122 | { |
| 1123 | shlib = SHLIB_PIC; |
| 1124 | ppc_flags |= EF_PPC_RELOCATABLE_LIB; |
| 1125 | } |
| 1126 | else |
| 1127 | return 0; |
| 1128 | |
| 1129 | break; |
| 1130 | #endif |
| 1131 | |
| 1132 | /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */ |
| 1133 | case 'a': |
| 1134 | if (strcmp (arg, "64") == 0) |
| 1135 | { |
| 1136 | #ifdef BFD64 |
| 1137 | ppc_obj64 = 1; |
| 1138 | if (ppc_cpu & PPC_OPCODE_VLE) |
| 1139 | as_bad (_("the use of -mvle requires -a32.")); |
| 1140 | #else |
| 1141 | as_fatal (_("%s unsupported"), "-a64"); |
| 1142 | #endif |
| 1143 | } |
| 1144 | else if (strcmp (arg, "32") == 0) |
| 1145 | ppc_obj64 = 0; |
| 1146 | else |
| 1147 | return 0; |
| 1148 | break; |
| 1149 | |
| 1150 | case 'm': |
| 1151 | new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, arg); |
| 1152 | if (new_cpu != 0) |
| 1153 | { |
| 1154 | ppc_cpu = new_cpu; |
| 1155 | if (strcmp (arg, "vle") == 0) |
| 1156 | { |
| 1157 | if (set_target_endian && target_big_endian == 0) |
| 1158 | as_bad (_("the use of -mvle requires big endian.")); |
| 1159 | if (ppc_obj64) |
| 1160 | as_bad (_("the use of -mvle requires -a32.")); |
| 1161 | } |
| 1162 | } |
| 1163 | |
| 1164 | else if (strcmp (arg, "regnames") == 0) |
| 1165 | reg_names_p = TRUE; |
| 1166 | |
| 1167 | else if (strcmp (arg, "no-regnames") == 0) |
| 1168 | reg_names_p = FALSE; |
| 1169 | |
| 1170 | #ifdef OBJ_ELF |
| 1171 | /* -mrelocatable/-mrelocatable-lib -- warn about initializations |
| 1172 | that require relocation. */ |
| 1173 | else if (strcmp (arg, "relocatable") == 0) |
| 1174 | { |
| 1175 | shlib = SHLIB_MRELOCATABLE; |
| 1176 | ppc_flags |= EF_PPC_RELOCATABLE; |
| 1177 | } |
| 1178 | |
| 1179 | else if (strcmp (arg, "relocatable-lib") == 0) |
| 1180 | { |
| 1181 | shlib = SHLIB_MRELOCATABLE; |
| 1182 | ppc_flags |= EF_PPC_RELOCATABLE_LIB; |
| 1183 | } |
| 1184 | |
| 1185 | /* -memb, set embedded bit. */ |
| 1186 | else if (strcmp (arg, "emb") == 0) |
| 1187 | ppc_flags |= EF_PPC_EMB; |
| 1188 | |
| 1189 | /* -mlittle/-mbig set the endianness. */ |
| 1190 | else if (strcmp (arg, "little") == 0 |
| 1191 | || strcmp (arg, "little-endian") == 0) |
| 1192 | { |
| 1193 | target_big_endian = 0; |
| 1194 | set_target_endian = 1; |
| 1195 | if (ppc_cpu & PPC_OPCODE_VLE) |
| 1196 | as_bad (_("the use of -mvle requires big endian.")); |
| 1197 | } |
| 1198 | |
| 1199 | else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0) |
| 1200 | { |
| 1201 | target_big_endian = 1; |
| 1202 | set_target_endian = 1; |
| 1203 | } |
| 1204 | |
| 1205 | else if (strcmp (arg, "solaris") == 0) |
| 1206 | { |
| 1207 | msolaris = TRUE; |
| 1208 | ppc_comment_chars = ppc_solaris_comment_chars; |
| 1209 | } |
| 1210 | |
| 1211 | else if (strcmp (arg, "no-solaris") == 0) |
| 1212 | { |
| 1213 | msolaris = FALSE; |
| 1214 | ppc_comment_chars = ppc_eabi_comment_chars; |
| 1215 | } |
| 1216 | #endif |
| 1217 | else |
| 1218 | { |
| 1219 | as_bad (_("invalid switch -m%s"), arg); |
| 1220 | return 0; |
| 1221 | } |
| 1222 | break; |
| 1223 | |
| 1224 | #ifdef OBJ_ELF |
| 1225 | /* -V: SVR4 argument to print version ID. */ |
| 1226 | case 'V': |
| 1227 | print_version_id (); |
| 1228 | break; |
| 1229 | |
| 1230 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section |
| 1231 | should be emitted or not. FIXME: Not implemented. */ |
| 1232 | case 'Q': |
| 1233 | break; |
| 1234 | |
| 1235 | /* Solaris takes -s to specify that .stabs go in a .stabs section, |
| 1236 | rather than .stabs.excl, which is ignored by the linker. |
| 1237 | FIXME: Not implemented. */ |
| 1238 | case 's': |
| 1239 | if (arg) |
| 1240 | return 0; |
| 1241 | |
| 1242 | break; |
| 1243 | #endif |
| 1244 | |
| 1245 | case OPTION_NOPS: |
| 1246 | { |
| 1247 | char *end; |
| 1248 | nop_limit = strtoul (optarg, &end, 0); |
| 1249 | if (*end) |
| 1250 | as_bad (_("--nops needs a numeric argument")); |
| 1251 | } |
| 1252 | break; |
| 1253 | |
| 1254 | case 0: |
| 1255 | break; |
| 1256 | |
| 1257 | default: |
| 1258 | return 0; |
| 1259 | } |
| 1260 | |
| 1261 | return 1; |
| 1262 | } |
| 1263 | |
| 1264 | void |
| 1265 | md_show_usage (FILE *stream) |
| 1266 | { |
| 1267 | fprintf (stream, _("\ |
| 1268 | PowerPC options:\n\ |
| 1269 | -a32 generate ELF32/XCOFF32\n\ |
| 1270 | -a64 generate ELF64/XCOFF64\n\ |
| 1271 | -u ignored\n\ |
| 1272 | -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\ |
| 1273 | -mpwr generate code for POWER (RIOS1)\n\ |
| 1274 | -m601 generate code for PowerPC 601\n\ |
| 1275 | -mppc, -mppc32, -m603, -m604\n\ |
| 1276 | generate code for PowerPC 603/604\n\ |
| 1277 | -m403 generate code for PowerPC 403\n\ |
| 1278 | -m405 generate code for PowerPC 405\n\ |
| 1279 | -m440 generate code for PowerPC 440\n\ |
| 1280 | -m464 generate code for PowerPC 464\n\ |
| 1281 | -m476 generate code for PowerPC 476\n\ |
| 1282 | -m7400, -m7410, -m7450, -m7455\n\ |
| 1283 | generate code for PowerPC 7400/7410/7450/7455\n\ |
| 1284 | -m750cl generate code for PowerPC 750cl\n")); |
| 1285 | fprintf (stream, _("\ |
| 1286 | -mppc64, -m620 generate code for PowerPC 620/625/630\n\ |
| 1287 | -mppc64bridge generate code for PowerPC 64, including bridge insns\n\ |
| 1288 | -mbooke generate code for 32-bit PowerPC BookE\n\ |
| 1289 | -ma2 generate code for A2 architecture\n\ |
| 1290 | -mpower4, -mpwr4 generate code for Power4 architecture\n\ |
| 1291 | -mpower5, -mpwr5, -mpwr5x\n\ |
| 1292 | generate code for Power5 architecture\n\ |
| 1293 | -mpower6, -mpwr6 generate code for Power6 architecture\n\ |
| 1294 | -mpower7, -mpwr7 generate code for Power7 architecture\n\ |
| 1295 | -mpower8, -mpwr8 generate code for Power8 architecture\n\ |
| 1296 | -mcell generate code for Cell Broadband Engine architecture\n\ |
| 1297 | -mcom generate code Power/PowerPC common instructions\n\ |
| 1298 | -many generate code for any architecture (PWR/PWRX/PPC)\n")); |
| 1299 | fprintf (stream, _("\ |
| 1300 | -maltivec generate code for AltiVec\n\ |
| 1301 | -mvsx generate code for Vector-Scalar (VSX) instructions\n\ |
| 1302 | -mhtm generate code for Hardware Transactional Memory\n\ |
| 1303 | -me300 generate code for PowerPC e300 family\n\ |
| 1304 | -me500, -me500x2 generate code for Motorola e500 core complex\n\ |
| 1305 | -me500mc, generate code for Freescale e500mc core complex\n\ |
| 1306 | -me500mc64, generate code for Freescale e500mc64 core complex\n\ |
| 1307 | -me5500, generate code for Freescale e5500 core complex\n\ |
| 1308 | -me6500, generate code for Freescale e6500 core complex\n\ |
| 1309 | -mspe generate code for Motorola SPE instructions\n\ |
| 1310 | -mvle generate code for Freescale VLE instructions\n\ |
| 1311 | -mtitan generate code for AppliedMicro Titan core complex\n\ |
| 1312 | -mregnames Allow symbolic names for registers\n\ |
| 1313 | -mno-regnames Do not allow symbolic names for registers\n")); |
| 1314 | #ifdef OBJ_ELF |
| 1315 | fprintf (stream, _("\ |
| 1316 | -mrelocatable support for GCC's -mrelocatble option\n\ |
| 1317 | -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\ |
| 1318 | -memb set PPC_EMB bit in ELF flags\n\ |
| 1319 | -mlittle, -mlittle-endian, -le\n\ |
| 1320 | generate code for a little endian machine\n\ |
| 1321 | -mbig, -mbig-endian, -be\n\ |
| 1322 | generate code for a big endian machine\n\ |
| 1323 | -msolaris generate code for Solaris\n\ |
| 1324 | -mno-solaris do not generate code for Solaris\n\ |
| 1325 | -K PIC set EF_PPC_RELOCATABLE_LIB in ELF flags\n\ |
| 1326 | -V print assembler version number\n\ |
| 1327 | -Qy, -Qn ignored\n")); |
| 1328 | #endif |
| 1329 | fprintf (stream, _("\ |
| 1330 | -nops=count when aligning, more than COUNT nops uses a branch\n\ |
| 1331 | -ppc476-workaround warn if emitting data to code sections\n")); |
| 1332 | } |
| 1333 | \f |
| 1334 | /* Set ppc_cpu if it is not already set. */ |
| 1335 | |
| 1336 | static void |
| 1337 | ppc_set_cpu (void) |
| 1338 | { |
| 1339 | const char *default_os = TARGET_OS; |
| 1340 | const char *default_cpu = TARGET_CPU; |
| 1341 | |
| 1342 | if ((ppc_cpu & ~(ppc_cpu_t) PPC_OPCODE_ANY) == 0) |
| 1343 | { |
| 1344 | if (ppc_obj64) |
| 1345 | ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_64; |
| 1346 | else if (strncmp (default_os, "aix", 3) == 0 |
| 1347 | && default_os[3] >= '4' && default_os[3] <= '9') |
| 1348 | ppc_cpu |= PPC_OPCODE_COMMON; |
| 1349 | else if (strncmp (default_os, "aix3", 4) == 0) |
| 1350 | ppc_cpu |= PPC_OPCODE_POWER; |
| 1351 | else if (strcmp (default_cpu, "rs6000") == 0) |
| 1352 | ppc_cpu |= PPC_OPCODE_POWER; |
| 1353 | else if (strncmp (default_cpu, "powerpc", 7) == 0) |
| 1354 | ppc_cpu |= PPC_OPCODE_PPC; |
| 1355 | else |
| 1356 | as_fatal (_("unknown default cpu = %s, os = %s"), |
| 1357 | default_cpu, default_os); |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | /* Figure out the BFD architecture to use. This function and ppc_mach |
| 1362 | are called well before md_begin, when the output file is opened. */ |
| 1363 | |
| 1364 | enum bfd_architecture |
| 1365 | ppc_arch (void) |
| 1366 | { |
| 1367 | const char *default_cpu = TARGET_CPU; |
| 1368 | ppc_set_cpu (); |
| 1369 | |
| 1370 | if ((ppc_cpu & PPC_OPCODE_PPC) != 0) |
| 1371 | return bfd_arch_powerpc; |
| 1372 | if ((ppc_cpu & PPC_OPCODE_VLE) != 0) |
| 1373 | return bfd_arch_powerpc; |
| 1374 | if ((ppc_cpu & PPC_OPCODE_POWER) != 0) |
| 1375 | return bfd_arch_rs6000; |
| 1376 | if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0) |
| 1377 | { |
| 1378 | if (strcmp (default_cpu, "rs6000") == 0) |
| 1379 | return bfd_arch_rs6000; |
| 1380 | else if (strncmp (default_cpu, "powerpc", 7) == 0) |
| 1381 | return bfd_arch_powerpc; |
| 1382 | } |
| 1383 | |
| 1384 | as_fatal (_("neither Power nor PowerPC opcodes were selected.")); |
| 1385 | return bfd_arch_unknown; |
| 1386 | } |
| 1387 | |
| 1388 | unsigned long |
| 1389 | ppc_mach (void) |
| 1390 | { |
| 1391 | if (ppc_obj64) |
| 1392 | return bfd_mach_ppc64; |
| 1393 | else if (ppc_arch () == bfd_arch_rs6000) |
| 1394 | return bfd_mach_rs6k; |
| 1395 | else if (ppc_cpu & PPC_OPCODE_TITAN) |
| 1396 | return bfd_mach_ppc_titan; |
| 1397 | else if (ppc_cpu & PPC_OPCODE_VLE) |
| 1398 | return bfd_mach_ppc_vle; |
| 1399 | else |
| 1400 | return bfd_mach_ppc; |
| 1401 | } |
| 1402 | |
| 1403 | extern char* |
| 1404 | ppc_target_format (void) |
| 1405 | { |
| 1406 | #ifdef OBJ_COFF |
| 1407 | #ifdef TE_PE |
| 1408 | return target_big_endian ? "pe-powerpc" : "pe-powerpcle"; |
| 1409 | #elif TE_POWERMAC |
| 1410 | return "xcoff-powermac"; |
| 1411 | #else |
| 1412 | # ifdef TE_AIX5 |
| 1413 | return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000"); |
| 1414 | # else |
| 1415 | return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000"); |
| 1416 | # endif |
| 1417 | #endif |
| 1418 | #endif |
| 1419 | #ifdef OBJ_ELF |
| 1420 | # ifdef TE_FreeBSD |
| 1421 | return (ppc_obj64 ? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd"); |
| 1422 | # elif defined (TE_VXWORKS) |
| 1423 | return "elf32-powerpc-vxworks"; |
| 1424 | # else |
| 1425 | return (target_big_endian |
| 1426 | ? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc") |
| 1427 | : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle")); |
| 1428 | # endif |
| 1429 | #endif |
| 1430 | } |
| 1431 | |
| 1432 | /* Validate one entry in powerpc_opcodes[] or vle_opcodes[]. |
| 1433 | Return TRUE if there's a problem, otherwise FALSE. */ |
| 1434 | |
| 1435 | static bfd_boolean |
| 1436 | insn_validate (const struct powerpc_opcode *op) |
| 1437 | { |
| 1438 | const unsigned char *o; |
| 1439 | unsigned long omask = op->mask; |
| 1440 | |
| 1441 | /* The mask had better not trim off opcode bits. */ |
| 1442 | if ((op->opcode & omask) != op->opcode) |
| 1443 | { |
| 1444 | as_bad (_("mask trims opcode bits for %s"), op->name); |
| 1445 | return TRUE; |
| 1446 | } |
| 1447 | |
| 1448 | /* The operands must not overlap the opcode or each other. */ |
| 1449 | for (o = op->operands; *o; ++o) |
| 1450 | { |
| 1451 | if (*o >= num_powerpc_operands) |
| 1452 | { |
| 1453 | as_bad (_("operand index error for %s"), op->name); |
| 1454 | return TRUE; |
| 1455 | } |
| 1456 | else |
| 1457 | { |
| 1458 | const struct powerpc_operand *operand = &powerpc_operands[*o]; |
| 1459 | if (operand->shift != PPC_OPSHIFT_INV) |
| 1460 | { |
| 1461 | unsigned long mask; |
| 1462 | |
| 1463 | if (operand->shift >= 0) |
| 1464 | mask = operand->bitm << operand->shift; |
| 1465 | else |
| 1466 | mask = operand->bitm >> -operand->shift; |
| 1467 | if (omask & mask) |
| 1468 | { |
| 1469 | as_bad (_("operand %d overlap in %s"), |
| 1470 | (int) (o - op->operands), op->name); |
| 1471 | return TRUE; |
| 1472 | } |
| 1473 | omask |= mask; |
| 1474 | } |
| 1475 | } |
| 1476 | } |
| 1477 | return FALSE; |
| 1478 | } |
| 1479 | |
| 1480 | /* Insert opcodes and macros into hash tables. Called at startup and |
| 1481 | for .machine pseudo. */ |
| 1482 | |
| 1483 | static void |
| 1484 | ppc_setup_opcodes (void) |
| 1485 | { |
| 1486 | const struct powerpc_opcode *op; |
| 1487 | const struct powerpc_opcode *op_end; |
| 1488 | const struct powerpc_macro *macro; |
| 1489 | const struct powerpc_macro *macro_end; |
| 1490 | bfd_boolean bad_insn = FALSE; |
| 1491 | |
| 1492 | if (ppc_hash != NULL) |
| 1493 | hash_die (ppc_hash); |
| 1494 | if (ppc_macro_hash != NULL) |
| 1495 | hash_die (ppc_macro_hash); |
| 1496 | |
| 1497 | /* Insert the opcodes into a hash table. */ |
| 1498 | ppc_hash = hash_new (); |
| 1499 | |
| 1500 | if (ENABLE_CHECKING) |
| 1501 | { |
| 1502 | unsigned int i; |
| 1503 | |
| 1504 | /* An index into powerpc_operands is stored in struct fix |
| 1505 | fx_pcrel_adjust which is 8 bits wide. */ |
| 1506 | gas_assert (num_powerpc_operands < 256); |
| 1507 | |
| 1508 | /* Check operand masks. Code here and in the disassembler assumes |
| 1509 | all the 1's in the mask are contiguous. */ |
| 1510 | for (i = 0; i < num_powerpc_operands; ++i) |
| 1511 | { |
| 1512 | unsigned long mask = powerpc_operands[i].bitm; |
| 1513 | unsigned long right_bit; |
| 1514 | unsigned int j; |
| 1515 | |
| 1516 | right_bit = mask & -mask; |
| 1517 | mask += right_bit; |
| 1518 | right_bit = mask & -mask; |
| 1519 | if (mask != right_bit) |
| 1520 | { |
| 1521 | as_bad (_("powerpc_operands[%d].bitm invalid"), i); |
| 1522 | bad_insn = TRUE; |
| 1523 | } |
| 1524 | for (j = i + 1; j < num_powerpc_operands; ++j) |
| 1525 | if (memcmp (&powerpc_operands[i], &powerpc_operands[j], |
| 1526 | sizeof (powerpc_operands[0])) == 0) |
| 1527 | { |
| 1528 | as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"), |
| 1529 | j, i); |
| 1530 | bad_insn = TRUE; |
| 1531 | } |
| 1532 | } |
| 1533 | } |
| 1534 | |
| 1535 | op_end = powerpc_opcodes + powerpc_num_opcodes; |
| 1536 | for (op = powerpc_opcodes; op < op_end; op++) |
| 1537 | { |
| 1538 | if (ENABLE_CHECKING) |
| 1539 | { |
| 1540 | if (op != powerpc_opcodes) |
| 1541 | { |
| 1542 | int old_opcode = PPC_OP (op[-1].opcode); |
| 1543 | int new_opcode = PPC_OP (op[0].opcode); |
| 1544 | |
| 1545 | #ifdef PRINT_OPCODE_TABLE |
| 1546 | printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n", |
| 1547 | op->name, (unsigned int) (op - powerpc_opcodes), |
| 1548 | (unsigned int) new_opcode, (unsigned int) op->opcode, |
| 1549 | (unsigned int) op->mask, (unsigned long long) op->flags); |
| 1550 | #endif |
| 1551 | |
| 1552 | /* The major opcodes had better be sorted. Code in the |
| 1553 | disassembler assumes the insns are sorted according to |
| 1554 | major opcode. */ |
| 1555 | if (new_opcode < old_opcode) |
| 1556 | { |
| 1557 | as_bad (_("major opcode is not sorted for %s"), |
| 1558 | op->name); |
| 1559 | bad_insn = TRUE; |
| 1560 | } |
| 1561 | } |
| 1562 | bad_insn |= insn_validate (op); |
| 1563 | } |
| 1564 | |
| 1565 | if ((ppc_cpu & op->flags) != 0 |
| 1566 | && !(ppc_cpu & op->deprecated)) |
| 1567 | { |
| 1568 | const char *retval; |
| 1569 | |
| 1570 | retval = hash_insert (ppc_hash, op->name, (void *) op); |
| 1571 | if (retval != NULL) |
| 1572 | { |
| 1573 | as_bad (_("duplicate instruction %s"), |
| 1574 | op->name); |
| 1575 | bad_insn = TRUE; |
| 1576 | } |
| 1577 | } |
| 1578 | } |
| 1579 | |
| 1580 | if ((ppc_cpu & PPC_OPCODE_ANY) != 0) |
| 1581 | for (op = powerpc_opcodes; op < op_end; op++) |
| 1582 | hash_insert (ppc_hash, op->name, (void *) op); |
| 1583 | |
| 1584 | op_end = vle_opcodes + vle_num_opcodes; |
| 1585 | for (op = vle_opcodes; op < op_end; op++) |
| 1586 | { |
| 1587 | if (ENABLE_CHECKING) |
| 1588 | { |
| 1589 | if (op != vle_opcodes) |
| 1590 | { |
| 1591 | unsigned old_seg, new_seg; |
| 1592 | |
| 1593 | old_seg = VLE_OP (op[-1].opcode, op[-1].mask); |
| 1594 | old_seg = VLE_OP_TO_SEG (old_seg); |
| 1595 | new_seg = VLE_OP (op[0].opcode, op[0].mask); |
| 1596 | new_seg = VLE_OP_TO_SEG (new_seg); |
| 1597 | |
| 1598 | #ifdef PRINT_OPCODE_TABLE |
| 1599 | printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n", |
| 1600 | op->name, (unsigned int) (op - powerpc_opcodes), |
| 1601 | (unsigned int) new_seg, (unsigned int) op->opcode, |
| 1602 | (unsigned int) op->mask, (unsigned long long) op->flags); |
| 1603 | #endif |
| 1604 | /* The major opcodes had better be sorted. Code in the |
| 1605 | disassembler assumes the insns are sorted according to |
| 1606 | major opcode. */ |
| 1607 | if (new_seg < old_seg) |
| 1608 | { |
| 1609 | as_bad (_("major opcode is not sorted for %s"), |
| 1610 | op->name); |
| 1611 | bad_insn = TRUE; |
| 1612 | } |
| 1613 | } |
| 1614 | |
| 1615 | bad_insn |= insn_validate (op); |
| 1616 | } |
| 1617 | |
| 1618 | if ((ppc_cpu & op->flags) != 0 |
| 1619 | && !(ppc_cpu & op->deprecated)) |
| 1620 | { |
| 1621 | const char *retval; |
| 1622 | |
| 1623 | retval = hash_insert (ppc_hash, op->name, (void *) op); |
| 1624 | if (retval != NULL) |
| 1625 | { |
| 1626 | as_bad (_("duplicate instruction %s"), |
| 1627 | op->name); |
| 1628 | bad_insn = TRUE; |
| 1629 | } |
| 1630 | } |
| 1631 | } |
| 1632 | |
| 1633 | if ((ppc_cpu & PPC_OPCODE_VLE) != 0) |
| 1634 | for (op = vle_opcodes; op < op_end; op++) |
| 1635 | hash_insert (ppc_hash, op->name, (void *) op); |
| 1636 | |
| 1637 | /* Insert the macros into a hash table. */ |
| 1638 | ppc_macro_hash = hash_new (); |
| 1639 | |
| 1640 | macro_end = powerpc_macros + powerpc_num_macros; |
| 1641 | for (macro = powerpc_macros; macro < macro_end; macro++) |
| 1642 | { |
| 1643 | if ((macro->flags & ppc_cpu) != 0 || (ppc_cpu & PPC_OPCODE_ANY) != 0) |
| 1644 | { |
| 1645 | const char *retval; |
| 1646 | |
| 1647 | retval = hash_insert (ppc_macro_hash, macro->name, (void *) macro); |
| 1648 | if (retval != (const char *) NULL) |
| 1649 | { |
| 1650 | as_bad (_("duplicate macro %s"), macro->name); |
| 1651 | bad_insn = TRUE; |
| 1652 | } |
| 1653 | } |
| 1654 | } |
| 1655 | |
| 1656 | if (bad_insn) |
| 1657 | abort (); |
| 1658 | } |
| 1659 | |
| 1660 | /* This function is called when the assembler starts up. It is called |
| 1661 | after the options have been parsed and the output file has been |
| 1662 | opened. */ |
| 1663 | |
| 1664 | void |
| 1665 | md_begin (void) |
| 1666 | { |
| 1667 | ppc_set_cpu (); |
| 1668 | |
| 1669 | ppc_cie_data_alignment = ppc_obj64 ? -8 : -4; |
| 1670 | ppc_dwarf2_line_min_insn_length = (ppc_cpu & PPC_OPCODE_VLE) ? 2 : 4; |
| 1671 | |
| 1672 | #ifdef OBJ_ELF |
| 1673 | /* Set the ELF flags if desired. */ |
| 1674 | if (ppc_flags && !msolaris) |
| 1675 | bfd_set_private_flags (stdoutput, ppc_flags); |
| 1676 | #endif |
| 1677 | |
| 1678 | ppc_setup_opcodes (); |
| 1679 | |
| 1680 | /* Tell the main code what the endianness is if it is not overridden |
| 1681 | by the user. */ |
| 1682 | if (!set_target_endian) |
| 1683 | { |
| 1684 | set_target_endian = 1; |
| 1685 | target_big_endian = PPC_BIG_ENDIAN; |
| 1686 | } |
| 1687 | |
| 1688 | #ifdef OBJ_XCOFF |
| 1689 | ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG); |
| 1690 | |
| 1691 | /* Create dummy symbols to serve as initial csects. This forces the |
| 1692 | text csects to precede the data csects. These symbols will not |
| 1693 | be output. */ |
| 1694 | ppc_text_csects = symbol_make ("dummy\001"); |
| 1695 | symbol_get_tc (ppc_text_csects)->within = ppc_text_csects; |
| 1696 | ppc_data_csects = symbol_make ("dummy\001"); |
| 1697 | symbol_get_tc (ppc_data_csects)->within = ppc_data_csects; |
| 1698 | #endif |
| 1699 | |
| 1700 | #ifdef TE_PE |
| 1701 | |
| 1702 | ppc_current_section = text_section; |
| 1703 | ppc_previous_section = 0; |
| 1704 | |
| 1705 | #endif |
| 1706 | } |
| 1707 | |
| 1708 | void |
| 1709 | ppc_cleanup (void) |
| 1710 | { |
| 1711 | #ifdef OBJ_ELF |
| 1712 | if (ppc_apuinfo_list == NULL) |
| 1713 | return; |
| 1714 | |
| 1715 | /* Ok, so write the section info out. We have this layout: |
| 1716 | |
| 1717 | byte data what |
| 1718 | ---- ---- ---- |
| 1719 | 0 8 length of "APUinfo\0" |
| 1720 | 4 (n*4) number of APU's (4 bytes each) |
| 1721 | 8 2 note type 2 |
| 1722 | 12 "APUinfo\0" name |
| 1723 | 20 APU#1 first APU's info |
| 1724 | 24 APU#2 second APU's info |
| 1725 | ... ... |
| 1726 | */ |
| 1727 | { |
| 1728 | char *p; |
| 1729 | asection *seg = now_seg; |
| 1730 | subsegT subseg = now_subseg; |
| 1731 | asection *apuinfo_secp = (asection *) NULL; |
| 1732 | unsigned int i; |
| 1733 | |
| 1734 | /* Create the .PPC.EMB.apuinfo section. */ |
| 1735 | apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0); |
| 1736 | bfd_set_section_flags (stdoutput, |
| 1737 | apuinfo_secp, |
| 1738 | SEC_HAS_CONTENTS | SEC_READONLY); |
| 1739 | |
| 1740 | p = frag_more (4); |
| 1741 | md_number_to_chars (p, (valueT) 8, 4); |
| 1742 | |
| 1743 | p = frag_more (4); |
| 1744 | md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4); |
| 1745 | |
| 1746 | p = frag_more (4); |
| 1747 | md_number_to_chars (p, (valueT) 2, 4); |
| 1748 | |
| 1749 | p = frag_more (8); |
| 1750 | strcpy (p, "APUinfo"); |
| 1751 | |
| 1752 | for (i = 0; i < ppc_apuinfo_num; i++) |
| 1753 | { |
| 1754 | p = frag_more (4); |
| 1755 | md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4); |
| 1756 | } |
| 1757 | |
| 1758 | frag_align (2, 0, 0); |
| 1759 | |
| 1760 | /* We probably can't restore the current segment, for there likely |
| 1761 | isn't one yet... */ |
| 1762 | if (seg && subseg) |
| 1763 | subseg_set (seg, subseg); |
| 1764 | } |
| 1765 | #endif |
| 1766 | } |
| 1767 | |
| 1768 | /* Insert an operand value into an instruction. */ |
| 1769 | |
| 1770 | static unsigned long |
| 1771 | ppc_insert_operand (unsigned long insn, |
| 1772 | const struct powerpc_operand *operand, |
| 1773 | offsetT val, |
| 1774 | ppc_cpu_t cpu, |
| 1775 | char *file, |
| 1776 | unsigned int line) |
| 1777 | { |
| 1778 | long min, max, right; |
| 1779 | |
| 1780 | max = operand->bitm; |
| 1781 | right = max & -max; |
| 1782 | min = 0; |
| 1783 | |
| 1784 | if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0) |
| 1785 | { |
| 1786 | /* Extend the allowed range for addis to [-65536, 65535]. |
| 1787 | Similarly for some VLE high part insns. For 64-bit it |
| 1788 | would be good to disable this for signed fields since the |
| 1789 | value is sign extended into the high 32 bits of the register. |
| 1790 | If the value is, say, an address, then we might care about |
| 1791 | the high bits. However, gcc as of 2014-06 uses unsigned |
| 1792 | values when loading the high part of 64-bit constants using |
| 1793 | lis. |
| 1794 | Use the same extended range for cmpli, to allow at least |
| 1795 | [-32768, 65535]. */ |
| 1796 | min = ~max & -right; |
| 1797 | } |
| 1798 | else if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 1799 | { |
| 1800 | max = (max >> 1) & -right; |
| 1801 | min = ~max & -right; |
| 1802 | } |
| 1803 | |
| 1804 | if ((operand->flags & PPC_OPERAND_PLUS1) != 0) |
| 1805 | max++; |
| 1806 | |
| 1807 | if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0) |
| 1808 | { |
| 1809 | long tmp = min; |
| 1810 | min = -max; |
| 1811 | max = -tmp; |
| 1812 | } |
| 1813 | |
| 1814 | if (min <= max) |
| 1815 | { |
| 1816 | /* Some people write constants with the sign extension done by |
| 1817 | hand but only up to 32 bits. This shouldn't really be valid, |
| 1818 | but, to permit this code to assemble on a 64-bit host, we |
| 1819 | sign extend the 32-bit value to 64 bits if so doing makes the |
| 1820 | value valid. */ |
| 1821 | if (val > max |
| 1822 | && (offsetT) (val - 0x80000000 - 0x80000000) >= min |
| 1823 | && (offsetT) (val - 0x80000000 - 0x80000000) <= max |
| 1824 | && ((val - 0x80000000 - 0x80000000) & (right - 1)) == 0) |
| 1825 | val = val - 0x80000000 - 0x80000000; |
| 1826 | |
| 1827 | /* Similarly, people write expressions like ~(1<<15), and expect |
| 1828 | this to be OK for a 32-bit unsigned value. */ |
| 1829 | else if (val < min |
| 1830 | && (offsetT) (val + 0x80000000 + 0x80000000) >= min |
| 1831 | && (offsetT) (val + 0x80000000 + 0x80000000) <= max |
| 1832 | && ((val + 0x80000000 + 0x80000000) & (right - 1)) == 0) |
| 1833 | val = val + 0x80000000 + 0x80000000; |
| 1834 | |
| 1835 | else if (val < min |
| 1836 | || val > max |
| 1837 | || (val & (right - 1)) != 0) |
| 1838 | as_bad_value_out_of_range (_("operand"), val, min, max, file, line); |
| 1839 | } |
| 1840 | |
| 1841 | if (operand->insert) |
| 1842 | { |
| 1843 | const char *errmsg; |
| 1844 | |
| 1845 | errmsg = NULL; |
| 1846 | insn = (*operand->insert) (insn, (long) val, cpu, &errmsg); |
| 1847 | if (errmsg != (const char *) NULL) |
| 1848 | as_bad_where (file, line, "%s", errmsg); |
| 1849 | } |
| 1850 | else if (operand->shift >= 0) |
| 1851 | insn |= ((long) val & operand->bitm) << operand->shift; |
| 1852 | else |
| 1853 | insn |= ((long) val & operand->bitm) >> -operand->shift; |
| 1854 | |
| 1855 | return insn; |
| 1856 | } |
| 1857 | |
| 1858 | \f |
| 1859 | #ifdef OBJ_ELF |
| 1860 | /* Parse @got, etc. and return the desired relocation. */ |
| 1861 | static bfd_reloc_code_real_type |
| 1862 | ppc_elf_suffix (char **str_p, expressionS *exp_p) |
| 1863 | { |
| 1864 | struct map_bfd { |
| 1865 | char *string; |
| 1866 | unsigned int length : 8; |
| 1867 | unsigned int valid32 : 1; |
| 1868 | unsigned int valid64 : 1; |
| 1869 | unsigned int reloc; |
| 1870 | }; |
| 1871 | |
| 1872 | char ident[20]; |
| 1873 | char *str = *str_p; |
| 1874 | char *str2; |
| 1875 | int ch; |
| 1876 | int len; |
| 1877 | const struct map_bfd *ptr; |
| 1878 | |
| 1879 | #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc } |
| 1880 | #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc } |
| 1881 | #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc } |
| 1882 | |
| 1883 | static const struct map_bfd mapping[] = { |
| 1884 | MAP ("l", BFD_RELOC_LO16), |
| 1885 | MAP ("h", BFD_RELOC_HI16), |
| 1886 | MAP ("ha", BFD_RELOC_HI16_S), |
| 1887 | MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN), |
| 1888 | MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN), |
| 1889 | MAP ("got", BFD_RELOC_16_GOTOFF), |
| 1890 | MAP ("got@l", BFD_RELOC_LO16_GOTOFF), |
| 1891 | MAP ("got@h", BFD_RELOC_HI16_GOTOFF), |
| 1892 | MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF), |
| 1893 | MAP ("plt@l", BFD_RELOC_LO16_PLTOFF), |
| 1894 | MAP ("plt@h", BFD_RELOC_HI16_PLTOFF), |
| 1895 | MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF), |
| 1896 | MAP ("copy", BFD_RELOC_PPC_COPY), |
| 1897 | MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT), |
| 1898 | MAP ("sectoff", BFD_RELOC_16_BASEREL), |
| 1899 | MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL), |
| 1900 | MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL), |
| 1901 | MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL), |
| 1902 | MAP ("tls", BFD_RELOC_PPC_TLS), |
| 1903 | MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD), |
| 1904 | MAP ("dtprel", BFD_RELOC_PPC_DTPREL), |
| 1905 | MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO), |
| 1906 | MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI), |
| 1907 | MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA), |
| 1908 | MAP ("tprel", BFD_RELOC_PPC_TPREL), |
| 1909 | MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO), |
| 1910 | MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI), |
| 1911 | MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA), |
| 1912 | MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16), |
| 1913 | MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO), |
| 1914 | MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI), |
| 1915 | MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA), |
| 1916 | MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16), |
| 1917 | MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO), |
| 1918 | MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI), |
| 1919 | MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA), |
| 1920 | MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16), |
| 1921 | MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO), |
| 1922 | MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI), |
| 1923 | MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA), |
| 1924 | MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16), |
| 1925 | MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO), |
| 1926 | MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI), |
| 1927 | MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA), |
| 1928 | MAP32 ("fixup", BFD_RELOC_CTOR), |
| 1929 | MAP32 ("plt", BFD_RELOC_24_PLT_PCREL), |
| 1930 | MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL), |
| 1931 | MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC), |
| 1932 | MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC), |
| 1933 | MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL), |
| 1934 | MAP32 ("sdarel", BFD_RELOC_GPREL16), |
| 1935 | MAP32 ("sdarel@l", BFD_RELOC_PPC_VLE_SDAREL_LO16A), |
| 1936 | MAP32 ("sdarel@h", BFD_RELOC_PPC_VLE_SDAREL_HI16A), |
| 1937 | MAP32 ("sdarel@ha", BFD_RELOC_PPC_VLE_SDAREL_HA16A), |
| 1938 | MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32), |
| 1939 | MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16), |
| 1940 | MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO), |
| 1941 | MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI), |
| 1942 | MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA), |
| 1943 | MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16), |
| 1944 | MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL), |
| 1945 | MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16), |
| 1946 | MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21), |
| 1947 | MAP32 ("sda21@l", BFD_RELOC_PPC_VLE_SDA21_LO), |
| 1948 | MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF), |
| 1949 | MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16), |
| 1950 | MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO), |
| 1951 | MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI), |
| 1952 | MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA), |
| 1953 | MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD), |
| 1954 | MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA), |
| 1955 | MAP32 ("xgot", BFD_RELOC_PPC_TOC16), |
| 1956 | MAP64 ("high", BFD_RELOC_PPC64_ADDR16_HIGH), |
| 1957 | MAP64 ("higha", BFD_RELOC_PPC64_ADDR16_HIGHA), |
| 1958 | MAP64 ("higher", BFD_RELOC_PPC64_HIGHER), |
| 1959 | MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S), |
| 1960 | MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST), |
| 1961 | MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S), |
| 1962 | MAP64 ("tocbase", BFD_RELOC_PPC64_TOC), |
| 1963 | MAP64 ("toc", BFD_RELOC_PPC_TOC16), |
| 1964 | MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO), |
| 1965 | MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI), |
| 1966 | MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA), |
| 1967 | MAP64 ("dtprel@high", BFD_RELOC_PPC64_DTPREL16_HIGH), |
| 1968 | MAP64 ("dtprel@higha", BFD_RELOC_PPC64_DTPREL16_HIGHA), |
| 1969 | MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER), |
| 1970 | MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA), |
| 1971 | MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST), |
| 1972 | MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA), |
| 1973 | MAP64 ("localentry", BFD_RELOC_PPC64_ADDR64_LOCAL), |
| 1974 | MAP64 ("tprel@high", BFD_RELOC_PPC64_TPREL16_HIGH), |
| 1975 | MAP64 ("tprel@higha", BFD_RELOC_PPC64_TPREL16_HIGHA), |
| 1976 | MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER), |
| 1977 | MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA), |
| 1978 | MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST), |
| 1979 | MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA), |
| 1980 | { (char *) 0, 0, 0, 0, BFD_RELOC_NONE } |
| 1981 | }; |
| 1982 | |
| 1983 | if (*str++ != '@') |
| 1984 | return BFD_RELOC_NONE; |
| 1985 | |
| 1986 | for (ch = *str, str2 = ident; |
| 1987 | (str2 < ident + sizeof (ident) - 1 |
| 1988 | && (ISALNUM (ch) || ch == '@')); |
| 1989 | ch = *++str) |
| 1990 | { |
| 1991 | *str2++ = TOLOWER (ch); |
| 1992 | } |
| 1993 | |
| 1994 | *str2 = '\0'; |
| 1995 | len = str2 - ident; |
| 1996 | |
| 1997 | ch = ident[0]; |
| 1998 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) |
| 1999 | if (ch == ptr->string[0] |
| 2000 | && len == ptr->length |
| 2001 | && memcmp (ident, ptr->string, ptr->length) == 0 |
| 2002 | && (ppc_obj64 ? ptr->valid64 : ptr->valid32)) |
| 2003 | { |
| 2004 | int reloc = ptr->reloc; |
| 2005 | |
| 2006 | if (!ppc_obj64 && exp_p->X_add_number != 0) |
| 2007 | { |
| 2008 | switch (reloc) |
| 2009 | { |
| 2010 | case BFD_RELOC_16_GOTOFF: |
| 2011 | case BFD_RELOC_LO16_GOTOFF: |
| 2012 | case BFD_RELOC_HI16_GOTOFF: |
| 2013 | case BFD_RELOC_HI16_S_GOTOFF: |
| 2014 | as_warn (_("identifier+constant@got means " |
| 2015 | "identifier@got+constant")); |
| 2016 | break; |
| 2017 | |
| 2018 | case BFD_RELOC_PPC_GOT_TLSGD16: |
| 2019 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: |
| 2020 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: |
| 2021 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: |
| 2022 | case BFD_RELOC_PPC_GOT_TLSLD16: |
| 2023 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: |
| 2024 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: |
| 2025 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: |
| 2026 | case BFD_RELOC_PPC_GOT_DTPREL16: |
| 2027 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: |
| 2028 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: |
| 2029 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: |
| 2030 | case BFD_RELOC_PPC_GOT_TPREL16: |
| 2031 | case BFD_RELOC_PPC_GOT_TPREL16_LO: |
| 2032 | case BFD_RELOC_PPC_GOT_TPREL16_HI: |
| 2033 | case BFD_RELOC_PPC_GOT_TPREL16_HA: |
| 2034 | as_bad (_("symbol+offset not supported for got tls")); |
| 2035 | break; |
| 2036 | } |
| 2037 | } |
| 2038 | |
| 2039 | /* Now check for identifier@suffix+constant. */ |
| 2040 | if (*str == '-' || *str == '+') |
| 2041 | { |
| 2042 | char *orig_line = input_line_pointer; |
| 2043 | expressionS new_exp; |
| 2044 | |
| 2045 | input_line_pointer = str; |
| 2046 | expression (&new_exp); |
| 2047 | if (new_exp.X_op == O_constant) |
| 2048 | { |
| 2049 | exp_p->X_add_number += new_exp.X_add_number; |
| 2050 | str = input_line_pointer; |
| 2051 | } |
| 2052 | |
| 2053 | if (&input_line_pointer != str_p) |
| 2054 | input_line_pointer = orig_line; |
| 2055 | } |
| 2056 | *str_p = str; |
| 2057 | |
| 2058 | if (reloc == (int) BFD_RELOC_PPC64_TOC |
| 2059 | && exp_p->X_op == O_symbol |
| 2060 | && strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0) |
| 2061 | { |
| 2062 | /* Change the symbol so that the dummy .TOC. symbol can be |
| 2063 | omitted from the object file. */ |
| 2064 | exp_p->X_add_symbol = &abs_symbol; |
| 2065 | } |
| 2066 | |
| 2067 | return (bfd_reloc_code_real_type) reloc; |
| 2068 | } |
| 2069 | |
| 2070 | return BFD_RELOC_NONE; |
| 2071 | } |
| 2072 | |
| 2073 | /* Support @got, etc. on constants emitted via .short, .int etc. */ |
| 2074 | |
| 2075 | bfd_reloc_code_real_type |
| 2076 | ppc_elf_parse_cons (expressionS *exp, unsigned int nbytes) |
| 2077 | { |
| 2078 | expression (exp); |
| 2079 | if (nbytes >= 2 && *input_line_pointer == '@') |
| 2080 | return ppc_elf_suffix (&input_line_pointer, exp); |
| 2081 | return BFD_RELOC_NONE; |
| 2082 | } |
| 2083 | |
| 2084 | /* Warn when emitting data to code sections, unless we are emitting |
| 2085 | a relocation that ld --ppc476-workaround uses to recognise data |
| 2086 | *and* there was an unconditional branch prior to the data. */ |
| 2087 | |
| 2088 | void |
| 2089 | ppc_elf_cons_fix_check (expressionS *exp ATTRIBUTE_UNUSED, |
| 2090 | unsigned int nbytes, fixS *fix) |
| 2091 | { |
| 2092 | if (warn_476 |
| 2093 | && (now_seg->flags & SEC_CODE) != 0 |
| 2094 | && (nbytes != 4 |
| 2095 | || fix == NULL |
| 2096 | || !(fix->fx_r_type == BFD_RELOC_32 |
| 2097 | || fix->fx_r_type == BFD_RELOC_CTOR |
| 2098 | || fix->fx_r_type == BFD_RELOC_32_PCREL) |
| 2099 | || !(last_seg == now_seg && last_subseg == now_subseg) |
| 2100 | || !((last_insn & (0x3f << 26)) == (18u << 26) |
| 2101 | || ((last_insn & (0x3f << 26)) == (16u << 26) |
| 2102 | && (last_insn & (0x14 << 21)) == (0x14 << 21)) |
| 2103 | || ((last_insn & (0x3f << 26)) == (19u << 26) |
| 2104 | && (last_insn & (0x3ff << 1)) == (16u << 1) |
| 2105 | && (last_insn & (0x14 << 21)) == (0x14 << 21))))) |
| 2106 | { |
| 2107 | /* Flag that we've warned. */ |
| 2108 | if (fix != NULL) |
| 2109 | fix->fx_tcbit = 1; |
| 2110 | |
| 2111 | as_warn (_("data in executable section")); |
| 2112 | } |
| 2113 | } |
| 2114 | |
| 2115 | /* Solaris pseduo op to change to the .rodata section. */ |
| 2116 | static void |
| 2117 | ppc_elf_rdata (int xxx) |
| 2118 | { |
| 2119 | char *save_line = input_line_pointer; |
| 2120 | static char section[] = ".rodata\n"; |
| 2121 | |
| 2122 | /* Just pretend this is .section .rodata */ |
| 2123 | input_line_pointer = section; |
| 2124 | obj_elf_section (xxx); |
| 2125 | |
| 2126 | input_line_pointer = save_line; |
| 2127 | } |
| 2128 | |
| 2129 | /* Pseudo op to make file scope bss items. */ |
| 2130 | static void |
| 2131 | ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED) |
| 2132 | { |
| 2133 | char *name; |
| 2134 | char c; |
| 2135 | char *p; |
| 2136 | offsetT size; |
| 2137 | symbolS *symbolP; |
| 2138 | offsetT align; |
| 2139 | segT old_sec; |
| 2140 | int old_subsec; |
| 2141 | char *pfrag; |
| 2142 | int align2; |
| 2143 | |
| 2144 | name = input_line_pointer; |
| 2145 | c = get_symbol_end (); |
| 2146 | |
| 2147 | /* just after name is now '\0'. */ |
| 2148 | p = input_line_pointer; |
| 2149 | *p = c; |
| 2150 | SKIP_WHITESPACE (); |
| 2151 | if (*input_line_pointer != ',') |
| 2152 | { |
| 2153 | as_bad (_("expected comma after symbol-name: rest of line ignored.")); |
| 2154 | ignore_rest_of_line (); |
| 2155 | return; |
| 2156 | } |
| 2157 | |
| 2158 | input_line_pointer++; /* skip ',' */ |
| 2159 | if ((size = get_absolute_expression ()) < 0) |
| 2160 | { |
| 2161 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size); |
| 2162 | ignore_rest_of_line (); |
| 2163 | return; |
| 2164 | } |
| 2165 | |
| 2166 | /* The third argument to .lcomm is the alignment. */ |
| 2167 | if (*input_line_pointer != ',') |
| 2168 | align = 8; |
| 2169 | else |
| 2170 | { |
| 2171 | ++input_line_pointer; |
| 2172 | align = get_absolute_expression (); |
| 2173 | if (align <= 0) |
| 2174 | { |
| 2175 | as_warn (_("ignoring bad alignment")); |
| 2176 | align = 8; |
| 2177 | } |
| 2178 | } |
| 2179 | |
| 2180 | *p = 0; |
| 2181 | symbolP = symbol_find_or_make (name); |
| 2182 | *p = c; |
| 2183 | |
| 2184 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) |
| 2185 | { |
| 2186 | as_bad (_("ignoring attempt to re-define symbol `%s'."), |
| 2187 | S_GET_NAME (symbolP)); |
| 2188 | ignore_rest_of_line (); |
| 2189 | return; |
| 2190 | } |
| 2191 | |
| 2192 | if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size) |
| 2193 | { |
| 2194 | as_bad (_("length of .lcomm \"%s\" is already %ld. Not changed to %ld."), |
| 2195 | S_GET_NAME (symbolP), |
| 2196 | (long) S_GET_VALUE (symbolP), |
| 2197 | (long) size); |
| 2198 | |
| 2199 | ignore_rest_of_line (); |
| 2200 | return; |
| 2201 | } |
| 2202 | |
| 2203 | /* Allocate_bss. */ |
| 2204 | old_sec = now_seg; |
| 2205 | old_subsec = now_subseg; |
| 2206 | if (align) |
| 2207 | { |
| 2208 | /* Convert to a power of 2 alignment. */ |
| 2209 | for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2); |
| 2210 | if (align != 1) |
| 2211 | { |
| 2212 | as_bad (_("common alignment not a power of 2")); |
| 2213 | ignore_rest_of_line (); |
| 2214 | return; |
| 2215 | } |
| 2216 | } |
| 2217 | else |
| 2218 | align2 = 0; |
| 2219 | |
| 2220 | record_alignment (bss_section, align2); |
| 2221 | subseg_set (bss_section, 1); |
| 2222 | if (align2) |
| 2223 | frag_align (align2, 0, 0); |
| 2224 | if (S_GET_SEGMENT (symbolP) == bss_section) |
| 2225 | symbol_get_frag (symbolP)->fr_symbol = 0; |
| 2226 | symbol_set_frag (symbolP, frag_now); |
| 2227 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size, |
| 2228 | (char *) 0); |
| 2229 | *pfrag = 0; |
| 2230 | S_SET_SIZE (symbolP, size); |
| 2231 | S_SET_SEGMENT (symbolP, bss_section); |
| 2232 | subseg_set (old_sec, old_subsec); |
| 2233 | demand_empty_rest_of_line (); |
| 2234 | } |
| 2235 | |
| 2236 | /* Pseudo op to set symbol local entry point. */ |
| 2237 | static void |
| 2238 | ppc_elf_localentry (int ignore ATTRIBUTE_UNUSED) |
| 2239 | { |
| 2240 | char *name = input_line_pointer; |
| 2241 | char c = get_symbol_end (); |
| 2242 | char *p; |
| 2243 | expressionS exp; |
| 2244 | symbolS *sym; |
| 2245 | asymbol *bfdsym; |
| 2246 | elf_symbol_type *elfsym; |
| 2247 | |
| 2248 | p = input_line_pointer; |
| 2249 | *p = c; |
| 2250 | SKIP_WHITESPACE (); |
| 2251 | if (*input_line_pointer != ',') |
| 2252 | { |
| 2253 | *p = 0; |
| 2254 | as_bad (_("expected comma after name `%s' in .localentry directive"), |
| 2255 | name); |
| 2256 | *p = c; |
| 2257 | ignore_rest_of_line (); |
| 2258 | return; |
| 2259 | } |
| 2260 | input_line_pointer++; |
| 2261 | expression (&exp); |
| 2262 | if (exp.X_op == O_absent) |
| 2263 | { |
| 2264 | as_bad (_("missing expression in .localentry directive")); |
| 2265 | exp.X_op = O_constant; |
| 2266 | exp.X_add_number = 0; |
| 2267 | } |
| 2268 | *p = 0; |
| 2269 | sym = symbol_find_or_make (name); |
| 2270 | *p = c; |
| 2271 | |
| 2272 | if (resolve_expression (&exp) |
| 2273 | && exp.X_op == O_constant) |
| 2274 | { |
| 2275 | unsigned char encoded = PPC64_SET_LOCAL_ENTRY_OFFSET (exp.X_add_number); |
| 2276 | |
| 2277 | if (exp.X_add_number != (offsetT) PPC64_LOCAL_ENTRY_OFFSET (encoded)) |
| 2278 | as_bad (_(".localentry expression for `%s' " |
| 2279 | "is not a valid power of 2"), S_GET_NAME (sym)); |
| 2280 | else |
| 2281 | { |
| 2282 | bfdsym = symbol_get_bfdsym (sym); |
| 2283 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); |
| 2284 | gas_assert (elfsym); |
| 2285 | elfsym->internal_elf_sym.st_other &= ~STO_PPC64_LOCAL_MASK; |
| 2286 | elfsym->internal_elf_sym.st_other |= encoded; |
| 2287 | if (ppc_abiversion == 0) |
| 2288 | ppc_abiversion = 2; |
| 2289 | } |
| 2290 | } |
| 2291 | else |
| 2292 | as_bad (_(".localentry expression for `%s' " |
| 2293 | "does not evaluate to a constant"), S_GET_NAME (sym)); |
| 2294 | |
| 2295 | demand_empty_rest_of_line (); |
| 2296 | } |
| 2297 | |
| 2298 | /* Pseudo op to set ABI version. */ |
| 2299 | static void |
| 2300 | ppc_elf_abiversion (int ignore ATTRIBUTE_UNUSED) |
| 2301 | { |
| 2302 | expressionS exp; |
| 2303 | |
| 2304 | expression (&exp); |
| 2305 | if (exp.X_op == O_absent) |
| 2306 | { |
| 2307 | as_bad (_("missing expression in .abiversion directive")); |
| 2308 | exp.X_op = O_constant; |
| 2309 | exp.X_add_number = 0; |
| 2310 | } |
| 2311 | |
| 2312 | if (resolve_expression (&exp) |
| 2313 | && exp.X_op == O_constant) |
| 2314 | ppc_abiversion = exp.X_add_number; |
| 2315 | else |
| 2316 | as_bad (_(".abiversion expression does not evaluate to a constant")); |
| 2317 | demand_empty_rest_of_line (); |
| 2318 | } |
| 2319 | |
| 2320 | /* Set ABI version in output file. */ |
| 2321 | void |
| 2322 | ppc_elf_end (void) |
| 2323 | { |
| 2324 | if (ppc_obj64 && ppc_abiversion != 0) |
| 2325 | { |
| 2326 | elf_elfheader (stdoutput)->e_flags &= ~EF_PPC64_ABI; |
| 2327 | elf_elfheader (stdoutput)->e_flags |= ppc_abiversion & EF_PPC64_ABI; |
| 2328 | } |
| 2329 | } |
| 2330 | |
| 2331 | /* Validate any relocations emitted for -mrelocatable, possibly adding |
| 2332 | fixups for word relocations in writable segments, so we can adjust |
| 2333 | them at runtime. */ |
| 2334 | static void |
| 2335 | ppc_elf_validate_fix (fixS *fixp, segT seg) |
| 2336 | { |
| 2337 | if (fixp->fx_done || fixp->fx_pcrel) |
| 2338 | return; |
| 2339 | |
| 2340 | switch (shlib) |
| 2341 | { |
| 2342 | case SHLIB_NONE: |
| 2343 | case SHLIB_PIC: |
| 2344 | return; |
| 2345 | |
| 2346 | case SHLIB_MRELOCATABLE: |
| 2347 | if (fixp->fx_r_type != BFD_RELOC_16_GOTOFF |
| 2348 | && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF |
| 2349 | && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF |
| 2350 | && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF |
| 2351 | && fixp->fx_r_type != BFD_RELOC_16_BASEREL |
| 2352 | && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL |
| 2353 | && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL |
| 2354 | && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL |
| 2355 | && (seg->flags & SEC_LOAD) != 0 |
| 2356 | && strcmp (segment_name (seg), ".got2") != 0 |
| 2357 | && strcmp (segment_name (seg), ".dtors") != 0 |
| 2358 | && strcmp (segment_name (seg), ".ctors") != 0 |
| 2359 | && strcmp (segment_name (seg), ".fixup") != 0 |
| 2360 | && strcmp (segment_name (seg), ".gcc_except_table") != 0 |
| 2361 | && strcmp (segment_name (seg), ".eh_frame") != 0 |
| 2362 | && strcmp (segment_name (seg), ".ex_shared") != 0) |
| 2363 | { |
| 2364 | if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0 |
| 2365 | || fixp->fx_r_type != BFD_RELOC_CTOR) |
| 2366 | { |
| 2367 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 2368 | _("relocation cannot be done when using -mrelocatable")); |
| 2369 | } |
| 2370 | } |
| 2371 | return; |
| 2372 | } |
| 2373 | } |
| 2374 | |
| 2375 | /* Prevent elf_frob_file_before_adjust removing a weak undefined |
| 2376 | function descriptor sym if the corresponding code sym is used. */ |
| 2377 | |
| 2378 | void |
| 2379 | ppc_frob_file_before_adjust (void) |
| 2380 | { |
| 2381 | symbolS *symp; |
| 2382 | asection *toc; |
| 2383 | |
| 2384 | if (!ppc_obj64) |
| 2385 | return; |
| 2386 | |
| 2387 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) |
| 2388 | { |
| 2389 | const char *name; |
| 2390 | char *dotname; |
| 2391 | symbolS *dotsym; |
| 2392 | size_t len; |
| 2393 | |
| 2394 | name = S_GET_NAME (symp); |
| 2395 | if (name[0] == '.') |
| 2396 | continue; |
| 2397 | |
| 2398 | if (! S_IS_WEAK (symp) |
| 2399 | || S_IS_DEFINED (symp)) |
| 2400 | continue; |
| 2401 | |
| 2402 | len = strlen (name) + 1; |
| 2403 | dotname = xmalloc (len + 1); |
| 2404 | dotname[0] = '.'; |
| 2405 | memcpy (dotname + 1, name, len); |
| 2406 | dotsym = symbol_find_noref (dotname, 1); |
| 2407 | free (dotname); |
| 2408 | if (dotsym != NULL && (symbol_used_p (dotsym) |
| 2409 | || symbol_used_in_reloc_p (dotsym))) |
| 2410 | symbol_mark_used (symp); |
| 2411 | |
| 2412 | } |
| 2413 | |
| 2414 | toc = bfd_get_section_by_name (stdoutput, ".toc"); |
| 2415 | if (toc != NULL |
| 2416 | && toc_reloc_types != has_large_toc_reloc |
| 2417 | && bfd_section_size (stdoutput, toc) > 0x10000) |
| 2418 | as_warn (_("TOC section size exceeds 64k")); |
| 2419 | } |
| 2420 | |
| 2421 | /* .TOC. used in an opd entry as .TOC.@tocbase doesn't need to be |
| 2422 | emitted. Other uses of .TOC. will cause the symbol to be marked |
| 2423 | with BSF_KEEP in md_apply_fix. */ |
| 2424 | |
| 2425 | void |
| 2426 | ppc_elf_adjust_symtab (void) |
| 2427 | { |
| 2428 | if (ppc_obj64) |
| 2429 | { |
| 2430 | symbolS *symp; |
| 2431 | symp = symbol_find (".TOC."); |
| 2432 | if (symp != NULL) |
| 2433 | { |
| 2434 | asymbol *bsym = symbol_get_bfdsym (symp); |
| 2435 | if ((bsym->flags & BSF_KEEP) == 0) |
| 2436 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); |
| 2437 | } |
| 2438 | } |
| 2439 | } |
| 2440 | #endif /* OBJ_ELF */ |
| 2441 | \f |
| 2442 | #ifdef TE_PE |
| 2443 | |
| 2444 | /* |
| 2445 | * Summary of parse_toc_entry. |
| 2446 | * |
| 2447 | * in: Input_line_pointer points to the '[' in one of: |
| 2448 | * |
| 2449 | * [toc] [tocv] [toc32] [toc64] |
| 2450 | * |
| 2451 | * Anything else is an error of one kind or another. |
| 2452 | * |
| 2453 | * out: |
| 2454 | * return value: success or failure |
| 2455 | * toc_kind: kind of toc reference |
| 2456 | * input_line_pointer: |
| 2457 | * success: first char after the ']' |
| 2458 | * failure: unchanged |
| 2459 | * |
| 2460 | * settings: |
| 2461 | * |
| 2462 | * [toc] - rv == success, toc_kind = default_toc |
| 2463 | * [tocv] - rv == success, toc_kind = data_in_toc |
| 2464 | * [toc32] - rv == success, toc_kind = must_be_32 |
| 2465 | * [toc64] - rv == success, toc_kind = must_be_64 |
| 2466 | * |
| 2467 | */ |
| 2468 | |
| 2469 | enum toc_size_qualifier |
| 2470 | { |
| 2471 | default_toc, /* The toc cell constructed should be the system default size */ |
| 2472 | data_in_toc, /* This is a direct reference to a toc cell */ |
| 2473 | must_be_32, /* The toc cell constructed must be 32 bits wide */ |
| 2474 | must_be_64 /* The toc cell constructed must be 64 bits wide */ |
| 2475 | }; |
| 2476 | |
| 2477 | static int |
| 2478 | parse_toc_entry (enum toc_size_qualifier *toc_kind) |
| 2479 | { |
| 2480 | char *start; |
| 2481 | char *toc_spec; |
| 2482 | char c; |
| 2483 | enum toc_size_qualifier t; |
| 2484 | |
| 2485 | /* Save the input_line_pointer. */ |
| 2486 | start = input_line_pointer; |
| 2487 | |
| 2488 | /* Skip over the '[' , and whitespace. */ |
| 2489 | ++input_line_pointer; |
| 2490 | SKIP_WHITESPACE (); |
| 2491 | |
| 2492 | /* Find the spelling of the operand. */ |
| 2493 | toc_spec = input_line_pointer; |
| 2494 | c = get_symbol_end (); |
| 2495 | |
| 2496 | if (strcmp (toc_spec, "toc") == 0) |
| 2497 | { |
| 2498 | t = default_toc; |
| 2499 | } |
| 2500 | else if (strcmp (toc_spec, "tocv") == 0) |
| 2501 | { |
| 2502 | t = data_in_toc; |
| 2503 | } |
| 2504 | else if (strcmp (toc_spec, "toc32") == 0) |
| 2505 | { |
| 2506 | t = must_be_32; |
| 2507 | } |
| 2508 | else if (strcmp (toc_spec, "toc64") == 0) |
| 2509 | { |
| 2510 | t = must_be_64; |
| 2511 | } |
| 2512 | else |
| 2513 | { |
| 2514 | as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec); |
| 2515 | *input_line_pointer = c; |
| 2516 | input_line_pointer = start; |
| 2517 | return 0; |
| 2518 | } |
| 2519 | |
| 2520 | /* Now find the ']'. */ |
| 2521 | *input_line_pointer = c; |
| 2522 | |
| 2523 | SKIP_WHITESPACE (); /* leading whitespace could be there. */ |
| 2524 | c = *input_line_pointer++; /* input_line_pointer->past char in c. */ |
| 2525 | |
| 2526 | if (c != ']') |
| 2527 | { |
| 2528 | as_bad (_("syntax error: expected `]', found `%c'"), c); |
| 2529 | input_line_pointer = start; |
| 2530 | return 0; |
| 2531 | } |
| 2532 | |
| 2533 | *toc_kind = t; |
| 2534 | return 1; |
| 2535 | } |
| 2536 | #endif |
| 2537 | |
| 2538 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) |
| 2539 | /* See whether a symbol is in the TOC section. */ |
| 2540 | |
| 2541 | static int |
| 2542 | ppc_is_toc_sym (symbolS *sym) |
| 2543 | { |
| 2544 | #ifdef OBJ_XCOFF |
| 2545 | return (symbol_get_tc (sym)->symbol_class == XMC_TC |
| 2546 | || symbol_get_tc (sym)->symbol_class == XMC_TC0); |
| 2547 | #endif |
| 2548 | #ifdef OBJ_ELF |
| 2549 | const char *sname = segment_name (S_GET_SEGMENT (sym)); |
| 2550 | if (ppc_obj64) |
| 2551 | return strcmp (sname, ".toc") == 0; |
| 2552 | else |
| 2553 | return strcmp (sname, ".got") == 0; |
| 2554 | #endif |
| 2555 | } |
| 2556 | #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */ |
| 2557 | \f |
| 2558 | |
| 2559 | #ifdef OBJ_ELF |
| 2560 | #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff)) |
| 2561 | static void |
| 2562 | ppc_apuinfo_section_add (unsigned int apu, unsigned int version) |
| 2563 | { |
| 2564 | unsigned int i; |
| 2565 | |
| 2566 | /* Check we don't already exist. */ |
| 2567 | for (i = 0; i < ppc_apuinfo_num; i++) |
| 2568 | if (ppc_apuinfo_list[i] == APUID (apu, version)) |
| 2569 | return; |
| 2570 | |
| 2571 | if (ppc_apuinfo_num == ppc_apuinfo_num_alloc) |
| 2572 | { |
| 2573 | if (ppc_apuinfo_num_alloc == 0) |
| 2574 | { |
| 2575 | ppc_apuinfo_num_alloc = 4; |
| 2576 | ppc_apuinfo_list = (unsigned long *) |
| 2577 | xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc); |
| 2578 | } |
| 2579 | else |
| 2580 | { |
| 2581 | ppc_apuinfo_num_alloc += 4; |
| 2582 | ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list, |
| 2583 | sizeof (unsigned long) * ppc_apuinfo_num_alloc); |
| 2584 | } |
| 2585 | } |
| 2586 | ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version); |
| 2587 | } |
| 2588 | #undef APUID |
| 2589 | #endif |
| 2590 | \f |
| 2591 | |
| 2592 | /* We need to keep a list of fixups. We can't simply generate them as |
| 2593 | we go, because that would require us to first create the frag, and |
| 2594 | that would screw up references to ``.''. */ |
| 2595 | |
| 2596 | struct ppc_fixup |
| 2597 | { |
| 2598 | expressionS exp; |
| 2599 | int opindex; |
| 2600 | bfd_reloc_code_real_type reloc; |
| 2601 | }; |
| 2602 | |
| 2603 | #define MAX_INSN_FIXUPS (5) |
| 2604 | |
| 2605 | /* Form I16L. */ |
| 2606 | #define E_OR2I_INSN 0x7000C000 |
| 2607 | #define E_AND2I_DOT_INSN 0x7000C800 |
| 2608 | #define E_OR2IS_INSN 0x7000D000 |
| 2609 | #define E_LIS_INSN 0x7000E000 |
| 2610 | #define E_AND2IS_DOT_INSN 0x7000E800 |
| 2611 | |
| 2612 | /* Form I16A. */ |
| 2613 | #define E_ADD2I_DOT_INSN 0x70008800 |
| 2614 | #define E_ADD2IS_INSN 0x70009000 |
| 2615 | #define E_CMP16I_INSN 0x70009800 |
| 2616 | #define E_MULL2I_INSN 0x7000A000 |
| 2617 | #define E_CMPL16I_INSN 0x7000A800 |
| 2618 | #define E_CMPH16I_INSN 0x7000B000 |
| 2619 | #define E_CMPHL16I_INSN 0x7000B800 |
| 2620 | |
| 2621 | /* This routine is called for each instruction to be assembled. */ |
| 2622 | |
| 2623 | void |
| 2624 | md_assemble (char *str) |
| 2625 | { |
| 2626 | char *s; |
| 2627 | const struct powerpc_opcode *opcode; |
| 2628 | unsigned long insn; |
| 2629 | const unsigned char *opindex_ptr; |
| 2630 | int skip_optional; |
| 2631 | int need_paren; |
| 2632 | int next_opindex; |
| 2633 | struct ppc_fixup fixups[MAX_INSN_FIXUPS]; |
| 2634 | int fc; |
| 2635 | char *f; |
| 2636 | int addr_mod; |
| 2637 | int i; |
| 2638 | unsigned int insn_length; |
| 2639 | |
| 2640 | /* Get the opcode. */ |
| 2641 | for (s = str; *s != '\0' && ! ISSPACE (*s); s++) |
| 2642 | ; |
| 2643 | if (*s != '\0') |
| 2644 | *s++ = '\0'; |
| 2645 | |
| 2646 | /* Look up the opcode in the hash table. */ |
| 2647 | opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str); |
| 2648 | if (opcode == (const struct powerpc_opcode *) NULL) |
| 2649 | { |
| 2650 | const struct powerpc_macro *macro; |
| 2651 | |
| 2652 | macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str); |
| 2653 | if (macro == (const struct powerpc_macro *) NULL) |
| 2654 | as_bad (_("unrecognized opcode: `%s'"), str); |
| 2655 | else |
| 2656 | ppc_macro (s, macro); |
| 2657 | |
| 2658 | return; |
| 2659 | } |
| 2660 | |
| 2661 | insn = opcode->opcode; |
| 2662 | |
| 2663 | str = s; |
| 2664 | while (ISSPACE (*str)) |
| 2665 | ++str; |
| 2666 | |
| 2667 | /* PowerPC operands are just expressions. The only real issue is |
| 2668 | that a few operand types are optional. All cases which might use |
| 2669 | an optional operand separate the operands only with commas (in some |
| 2670 | cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never |
| 2671 | have optional operands). Most instructions with optional operands |
| 2672 | have only one. Those that have more than one optional operand can |
| 2673 | take either all their operands or none. So, before we start seriously |
| 2674 | parsing the operands, we check to see if we have optional operands, |
| 2675 | and if we do, we count the number of commas to see which operands |
| 2676 | have been omitted. */ |
| 2677 | skip_optional = 0; |
| 2678 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) |
| 2679 | { |
| 2680 | const struct powerpc_operand *operand; |
| 2681 | |
| 2682 | operand = &powerpc_operands[*opindex_ptr]; |
| 2683 | if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0) |
| 2684 | { |
| 2685 | unsigned int opcount; |
| 2686 | unsigned int num_operands_expected; |
| 2687 | |
| 2688 | /* There is an optional operand. Count the number of |
| 2689 | commas in the input line. */ |
| 2690 | if (*str == '\0') |
| 2691 | opcount = 0; |
| 2692 | else |
| 2693 | { |
| 2694 | opcount = 1; |
| 2695 | s = str; |
| 2696 | while ((s = strchr (s, ',')) != (char *) NULL) |
| 2697 | { |
| 2698 | ++opcount; |
| 2699 | ++s; |
| 2700 | } |
| 2701 | } |
| 2702 | |
| 2703 | /* Compute the number of expected operands. |
| 2704 | Do not count fake operands. */ |
| 2705 | for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++) |
| 2706 | if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0) |
| 2707 | ++ num_operands_expected; |
| 2708 | |
| 2709 | /* If there are fewer operands in the line then are called |
| 2710 | for by the instruction, we want to skip the optional |
| 2711 | operands. */ |
| 2712 | if (opcount < num_operands_expected) |
| 2713 | skip_optional = 1; |
| 2714 | |
| 2715 | break; |
| 2716 | } |
| 2717 | } |
| 2718 | |
| 2719 | /* Gather the operands. */ |
| 2720 | need_paren = 0; |
| 2721 | next_opindex = 0; |
| 2722 | fc = 0; |
| 2723 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) |
| 2724 | { |
| 2725 | const struct powerpc_operand *operand; |
| 2726 | const char *errmsg; |
| 2727 | char *hold; |
| 2728 | expressionS ex; |
| 2729 | char endc; |
| 2730 | |
| 2731 | if (next_opindex == 0) |
| 2732 | operand = &powerpc_operands[*opindex_ptr]; |
| 2733 | else |
| 2734 | { |
| 2735 | operand = &powerpc_operands[next_opindex]; |
| 2736 | next_opindex = 0; |
| 2737 | } |
| 2738 | errmsg = NULL; |
| 2739 | |
| 2740 | /* If this is a fake operand, then we do not expect anything |
| 2741 | from the input. */ |
| 2742 | if ((operand->flags & PPC_OPERAND_FAKE) != 0) |
| 2743 | { |
| 2744 | insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg); |
| 2745 | if (errmsg != (const char *) NULL) |
| 2746 | as_bad ("%s", errmsg); |
| 2747 | continue; |
| 2748 | } |
| 2749 | |
| 2750 | /* If this is an optional operand, and we are skipping it, just |
| 2751 | insert a zero. */ |
| 2752 | if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0 |
| 2753 | && skip_optional) |
| 2754 | { |
| 2755 | if (operand->insert) |
| 2756 | { |
| 2757 | insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg); |
| 2758 | if (errmsg != (const char *) NULL) |
| 2759 | as_bad ("%s", errmsg); |
| 2760 | } |
| 2761 | if ((operand->flags & PPC_OPERAND_NEXT) != 0) |
| 2762 | next_opindex = *opindex_ptr + 1; |
| 2763 | continue; |
| 2764 | } |
| 2765 | |
| 2766 | /* Gather the operand. */ |
| 2767 | hold = input_line_pointer; |
| 2768 | input_line_pointer = str; |
| 2769 | |
| 2770 | #ifdef TE_PE |
| 2771 | if (*input_line_pointer == '[') |
| 2772 | { |
| 2773 | /* We are expecting something like the second argument here: |
| 2774 | * |
| 2775 | * lwz r4,[toc].GS.0.static_int(rtoc) |
| 2776 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| 2777 | * The argument following the `]' must be a symbol name, and the |
| 2778 | * register must be the toc register: 'rtoc' or '2' |
| 2779 | * |
| 2780 | * The effect is to 0 as the displacement field |
| 2781 | * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or |
| 2782 | * the appropriate variation) reloc against it based on the symbol. |
| 2783 | * The linker will build the toc, and insert the resolved toc offset. |
| 2784 | * |
| 2785 | * Note: |
| 2786 | * o The size of the toc entry is currently assumed to be |
| 2787 | * 32 bits. This should not be assumed to be a hard coded |
| 2788 | * number. |
| 2789 | * o In an effort to cope with a change from 32 to 64 bits, |
| 2790 | * there are also toc entries that are specified to be |
| 2791 | * either 32 or 64 bits: |
| 2792 | * lwz r4,[toc32].GS.0.static_int(rtoc) |
| 2793 | * lwz r4,[toc64].GS.0.static_int(rtoc) |
| 2794 | * These demand toc entries of the specified size, and the |
| 2795 | * instruction probably requires it. |
| 2796 | */ |
| 2797 | |
| 2798 | int valid_toc; |
| 2799 | enum toc_size_qualifier toc_kind; |
| 2800 | bfd_reloc_code_real_type toc_reloc; |
| 2801 | |
| 2802 | /* Go parse off the [tocXX] part. */ |
| 2803 | valid_toc = parse_toc_entry (&toc_kind); |
| 2804 | |
| 2805 | if (!valid_toc) |
| 2806 | { |
| 2807 | ignore_rest_of_line (); |
| 2808 | break; |
| 2809 | } |
| 2810 | |
| 2811 | /* Now get the symbol following the ']'. */ |
| 2812 | expression (&ex); |
| 2813 | |
| 2814 | switch (toc_kind) |
| 2815 | { |
| 2816 | case default_toc: |
| 2817 | /* In this case, we may not have seen the symbol yet, |
| 2818 | since it is allowed to appear on a .extern or .globl |
| 2819 | or just be a label in the .data section. */ |
| 2820 | toc_reloc = BFD_RELOC_PPC_TOC16; |
| 2821 | break; |
| 2822 | case data_in_toc: |
| 2823 | /* 1. The symbol must be defined and either in the toc |
| 2824 | section, or a global. |
| 2825 | 2. The reloc generated must have the TOCDEFN flag set |
| 2826 | in upper bit mess of the reloc type. |
| 2827 | FIXME: It's a little confusing what the tocv |
| 2828 | qualifier can be used for. At the very least, I've |
| 2829 | seen three uses, only one of which I'm sure I can |
| 2830 | explain. */ |
| 2831 | if (ex.X_op == O_symbol) |
| 2832 | { |
| 2833 | gas_assert (ex.X_add_symbol != NULL); |
| 2834 | if (symbol_get_bfdsym (ex.X_add_symbol)->section |
| 2835 | != tocdata_section) |
| 2836 | { |
| 2837 | as_bad (_("[tocv] symbol is not a toc symbol")); |
| 2838 | } |
| 2839 | } |
| 2840 | |
| 2841 | toc_reloc = BFD_RELOC_PPC_TOC16; |
| 2842 | break; |
| 2843 | case must_be_32: |
| 2844 | /* FIXME: these next two specifically specify 32/64 bit |
| 2845 | toc entries. We don't support them today. Is this |
| 2846 | the right way to say that? */ |
| 2847 | toc_reloc = BFD_RELOC_NONE; |
| 2848 | as_bad (_("unimplemented toc32 expression modifier")); |
| 2849 | break; |
| 2850 | case must_be_64: |
| 2851 | /* FIXME: see above. */ |
| 2852 | toc_reloc = BFD_RELOC_NONE; |
| 2853 | as_bad (_("unimplemented toc64 expression modifier")); |
| 2854 | break; |
| 2855 | default: |
| 2856 | fprintf (stderr, |
| 2857 | _("Unexpected return value [%d] from parse_toc_entry!\n"), |
| 2858 | toc_kind); |
| 2859 | abort (); |
| 2860 | break; |
| 2861 | } |
| 2862 | |
| 2863 | /* We need to generate a fixup for this expression. */ |
| 2864 | if (fc >= MAX_INSN_FIXUPS) |
| 2865 | as_fatal (_("too many fixups")); |
| 2866 | |
| 2867 | fixups[fc].reloc = toc_reloc; |
| 2868 | fixups[fc].exp = ex; |
| 2869 | fixups[fc].opindex = *opindex_ptr; |
| 2870 | ++fc; |
| 2871 | |
| 2872 | /* Ok. We've set up the fixup for the instruction. Now make it |
| 2873 | look like the constant 0 was found here. */ |
| 2874 | ex.X_unsigned = 1; |
| 2875 | ex.X_op = O_constant; |
| 2876 | ex.X_add_number = 0; |
| 2877 | ex.X_add_symbol = NULL; |
| 2878 | ex.X_op_symbol = NULL; |
| 2879 | } |
| 2880 | |
| 2881 | else |
| 2882 | #endif /* TE_PE */ |
| 2883 | { |
| 2884 | if ((reg_names_p |
| 2885 | && (((operand->flags & PPC_OPERAND_CR_BIT) != 0) |
| 2886 | || ((operand->flags & PPC_OPERAND_CR_REG) != 0))) |
| 2887 | || !register_name (&ex)) |
| 2888 | { |
| 2889 | char save_lex = lex_type['%']; |
| 2890 | |
| 2891 | if (((operand->flags & PPC_OPERAND_CR_REG) != 0) |
| 2892 | || (operand->flags & PPC_OPERAND_CR_BIT) != 0) |
| 2893 | { |
| 2894 | cr_operand = TRUE; |
| 2895 | lex_type['%'] |= LEX_BEGIN_NAME; |
| 2896 | } |
| 2897 | expression (&ex); |
| 2898 | cr_operand = FALSE; |
| 2899 | lex_type['%'] = save_lex; |
| 2900 | } |
| 2901 | } |
| 2902 | |
| 2903 | str = input_line_pointer; |
| 2904 | input_line_pointer = hold; |
| 2905 | |
| 2906 | if (ex.X_op == O_illegal) |
| 2907 | as_bad (_("illegal operand")); |
| 2908 | else if (ex.X_op == O_absent) |
| 2909 | as_bad (_("missing operand")); |
| 2910 | else if (ex.X_op == O_register) |
| 2911 | { |
| 2912 | insn = ppc_insert_operand (insn, operand, ex.X_add_number, |
| 2913 | ppc_cpu, (char *) NULL, 0); |
| 2914 | } |
| 2915 | else if (ex.X_op == O_constant) |
| 2916 | { |
| 2917 | #ifdef OBJ_ELF |
| 2918 | /* Allow @HA, @L, @H on constants. */ |
| 2919 | bfd_reloc_code_real_type reloc; |
| 2920 | char *orig_str = str; |
| 2921 | |
| 2922 | if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_NONE) |
| 2923 | switch (reloc) |
| 2924 | { |
| 2925 | default: |
| 2926 | str = orig_str; |
| 2927 | break; |
| 2928 | |
| 2929 | case BFD_RELOC_LO16: |
| 2930 | ex.X_add_number &= 0xffff; |
| 2931 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2932 | ex.X_add_number = SEX16 (ex.X_add_number); |
| 2933 | break; |
| 2934 | |
| 2935 | case BFD_RELOC_HI16: |
| 2936 | if (REPORT_OVERFLOW_HI && ppc_obj64) |
| 2937 | { |
| 2938 | /* PowerPC64 @h is tested for overflow. */ |
| 2939 | ex.X_add_number = (addressT) ex.X_add_number >> 16; |
| 2940 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2941 | { |
| 2942 | addressT sign = (((addressT) -1 >> 16) + 1) >> 1; |
| 2943 | ex.X_add_number |
| 2944 | = ((addressT) ex.X_add_number ^ sign) - sign; |
| 2945 | } |
| 2946 | break; |
| 2947 | } |
| 2948 | /* Fall thru */ |
| 2949 | |
| 2950 | case BFD_RELOC_PPC64_ADDR16_HIGH: |
| 2951 | ex.X_add_number = PPC_HI (ex.X_add_number); |
| 2952 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2953 | ex.X_add_number = SEX16 (ex.X_add_number); |
| 2954 | break; |
| 2955 | |
| 2956 | case BFD_RELOC_HI16_S: |
| 2957 | if (REPORT_OVERFLOW_HI && ppc_obj64) |
| 2958 | { |
| 2959 | /* PowerPC64 @ha is tested for overflow. */ |
| 2960 | ex.X_add_number |
| 2961 | = ((addressT) ex.X_add_number + 0x8000) >> 16; |
| 2962 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2963 | { |
| 2964 | addressT sign = (((addressT) -1 >> 16) + 1) >> 1; |
| 2965 | ex.X_add_number |
| 2966 | = ((addressT) ex.X_add_number ^ sign) - sign; |
| 2967 | } |
| 2968 | break; |
| 2969 | } |
| 2970 | /* Fall thru */ |
| 2971 | |
| 2972 | case BFD_RELOC_PPC64_ADDR16_HIGHA: |
| 2973 | ex.X_add_number = PPC_HA (ex.X_add_number); |
| 2974 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2975 | ex.X_add_number = SEX16 (ex.X_add_number); |
| 2976 | break; |
| 2977 | |
| 2978 | case BFD_RELOC_PPC64_HIGHER: |
| 2979 | ex.X_add_number = PPC_HIGHER (ex.X_add_number); |
| 2980 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2981 | ex.X_add_number = SEX16 (ex.X_add_number); |
| 2982 | break; |
| 2983 | |
| 2984 | case BFD_RELOC_PPC64_HIGHER_S: |
| 2985 | ex.X_add_number = PPC_HIGHERA (ex.X_add_number); |
| 2986 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2987 | ex.X_add_number = SEX16 (ex.X_add_number); |
| 2988 | break; |
| 2989 | |
| 2990 | case BFD_RELOC_PPC64_HIGHEST: |
| 2991 | ex.X_add_number = PPC_HIGHEST (ex.X_add_number); |
| 2992 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2993 | ex.X_add_number = SEX16 (ex.X_add_number); |
| 2994 | break; |
| 2995 | |
| 2996 | case BFD_RELOC_PPC64_HIGHEST_S: |
| 2997 | ex.X_add_number = PPC_HIGHESTA (ex.X_add_number); |
| 2998 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 2999 | ex.X_add_number = SEX16 (ex.X_add_number); |
| 3000 | break; |
| 3001 | } |
| 3002 | #endif /* OBJ_ELF */ |
| 3003 | insn = ppc_insert_operand (insn, operand, ex.X_add_number, |
| 3004 | ppc_cpu, (char *) NULL, 0); |
| 3005 | } |
| 3006 | else |
| 3007 | { |
| 3008 | bfd_reloc_code_real_type reloc = BFD_RELOC_NONE; |
| 3009 | #ifdef OBJ_ELF |
| 3010 | if (ex.X_op == O_symbol && str[0] == '(') |
| 3011 | { |
| 3012 | const char *sym_name = S_GET_NAME (ex.X_add_symbol); |
| 3013 | if (sym_name[0] == '.') |
| 3014 | ++sym_name; |
| 3015 | |
| 3016 | if (strcasecmp (sym_name, "__tls_get_addr") == 0) |
| 3017 | { |
| 3018 | expressionS tls_exp; |
| 3019 | |
| 3020 | hold = input_line_pointer; |
| 3021 | input_line_pointer = str + 1; |
| 3022 | expression (&tls_exp); |
| 3023 | if (tls_exp.X_op == O_symbol) |
| 3024 | { |
| 3025 | reloc = BFD_RELOC_NONE; |
| 3026 | if (strncasecmp (input_line_pointer, "@tlsgd)", 7) == 0) |
| 3027 | { |
| 3028 | reloc = BFD_RELOC_PPC_TLSGD; |
| 3029 | input_line_pointer += 7; |
| 3030 | } |
| 3031 | else if (strncasecmp (input_line_pointer, "@tlsld)", 7) == 0) |
| 3032 | { |
| 3033 | reloc = BFD_RELOC_PPC_TLSLD; |
| 3034 | input_line_pointer += 7; |
| 3035 | } |
| 3036 | if (reloc != BFD_RELOC_NONE) |
| 3037 | { |
| 3038 | SKIP_WHITESPACE (); |
| 3039 | str = input_line_pointer; |
| 3040 | |
| 3041 | if (fc >= MAX_INSN_FIXUPS) |
| 3042 | as_fatal (_("too many fixups")); |
| 3043 | fixups[fc].exp = tls_exp; |
| 3044 | fixups[fc].opindex = *opindex_ptr; |
| 3045 | fixups[fc].reloc = reloc; |
| 3046 | ++fc; |
| 3047 | } |
| 3048 | } |
| 3049 | input_line_pointer = hold; |
| 3050 | } |
| 3051 | } |
| 3052 | |
| 3053 | if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_NONE) |
| 3054 | { |
| 3055 | /* Some TLS tweaks. */ |
| 3056 | switch (reloc) |
| 3057 | { |
| 3058 | default: |
| 3059 | break; |
| 3060 | |
| 3061 | case BFD_RELOC_PPC_TLS: |
| 3062 | if (!_bfd_elf_ppc_at_tls_transform (opcode->opcode, 0)) |
| 3063 | as_bad (_("@tls may not be used with \"%s\" operands"), |
| 3064 | opcode->name); |
| 3065 | else if (operand->shift != 11) |
| 3066 | as_bad (_("@tls may only be used in last operand")); |
| 3067 | else |
| 3068 | insn = ppc_insert_operand (insn, operand, |
| 3069 | ppc_obj64 ? 13 : 2, |
| 3070 | ppc_cpu, (char *) NULL, 0); |
| 3071 | break; |
| 3072 | |
| 3073 | /* We'll only use the 32 (or 64) bit form of these relocations |
| 3074 | in constants. Instructions get the 16 bit form. */ |
| 3075 | case BFD_RELOC_PPC_DTPREL: |
| 3076 | reloc = BFD_RELOC_PPC_DTPREL16; |
| 3077 | break; |
| 3078 | case BFD_RELOC_PPC_TPREL: |
| 3079 | reloc = BFD_RELOC_PPC_TPREL16; |
| 3080 | break; |
| 3081 | } |
| 3082 | |
| 3083 | /* If VLE-mode convert LO/HI/HA relocations. */ |
| 3084 | if (opcode->flags & PPC_OPCODE_VLE) |
| 3085 | { |
| 3086 | int tmp_insn = insn & opcode->mask; |
| 3087 | |
| 3088 | int use_d_reloc = (tmp_insn == E_OR2I_INSN |
| 3089 | || tmp_insn == E_AND2I_DOT_INSN |
| 3090 | || tmp_insn == E_OR2IS_INSN |
| 3091 | || tmp_insn == E_LIS_INSN |
| 3092 | || tmp_insn == E_AND2IS_DOT_INSN); |
| 3093 | |
| 3094 | |
| 3095 | int use_a_reloc = (tmp_insn == E_ADD2I_DOT_INSN |
| 3096 | || tmp_insn == E_ADD2IS_INSN |
| 3097 | || tmp_insn == E_CMP16I_INSN |
| 3098 | || tmp_insn == E_MULL2I_INSN |
| 3099 | || tmp_insn == E_CMPL16I_INSN |
| 3100 | || tmp_insn == E_CMPH16I_INSN |
| 3101 | || tmp_insn == E_CMPHL16I_INSN); |
| 3102 | |
| 3103 | switch (reloc) |
| 3104 | { |
| 3105 | default: |
| 3106 | break; |
| 3107 | |
| 3108 | case BFD_RELOC_PPC_EMB_SDA21: |
| 3109 | reloc = BFD_RELOC_PPC_VLE_SDA21; |
| 3110 | break; |
| 3111 | |
| 3112 | case BFD_RELOC_LO16: |
| 3113 | if (use_d_reloc) |
| 3114 | reloc = BFD_RELOC_PPC_VLE_LO16D; |
| 3115 | else if (use_a_reloc) |
| 3116 | reloc = BFD_RELOC_PPC_VLE_LO16A; |
| 3117 | break; |
| 3118 | |
| 3119 | case BFD_RELOC_HI16: |
| 3120 | if (use_d_reloc) |
| 3121 | reloc = BFD_RELOC_PPC_VLE_HI16D; |
| 3122 | else if (use_a_reloc) |
| 3123 | reloc = BFD_RELOC_PPC_VLE_HI16A; |
| 3124 | break; |
| 3125 | |
| 3126 | case BFD_RELOC_HI16_S: |
| 3127 | if (use_d_reloc) |
| 3128 | reloc = BFD_RELOC_PPC_VLE_HA16D; |
| 3129 | else if (use_a_reloc) |
| 3130 | reloc = BFD_RELOC_PPC_VLE_HA16A; |
| 3131 | break; |
| 3132 | |
| 3133 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: |
| 3134 | if (use_d_reloc) |
| 3135 | reloc = BFD_RELOC_PPC_VLE_SDAREL_LO16D; |
| 3136 | break; |
| 3137 | |
| 3138 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: |
| 3139 | if (use_d_reloc) |
| 3140 | reloc = BFD_RELOC_PPC_VLE_SDAREL_HI16D; |
| 3141 | break; |
| 3142 | |
| 3143 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: |
| 3144 | if (use_d_reloc) |
| 3145 | reloc = BFD_RELOC_PPC_VLE_SDAREL_HA16D; |
| 3146 | break; |
| 3147 | } |
| 3148 | } |
| 3149 | } |
| 3150 | #endif /* OBJ_ELF */ |
| 3151 | |
| 3152 | if (reloc != BFD_RELOC_NONE) |
| 3153 | ; |
| 3154 | /* Determine a BFD reloc value based on the operand information. |
| 3155 | We are only prepared to turn a few of the operands into |
| 3156 | relocs. */ |
| 3157 | else if ((operand->flags & (PPC_OPERAND_RELATIVE |
| 3158 | | PPC_OPERAND_ABSOLUTE)) != 0 |
| 3159 | && operand->bitm == 0x3fffffc |
| 3160 | && operand->shift == 0) |
| 3161 | reloc = BFD_RELOC_PPC_B26; |
| 3162 | else if ((operand->flags & (PPC_OPERAND_RELATIVE |
| 3163 | | PPC_OPERAND_ABSOLUTE)) != 0 |
| 3164 | && operand->bitm == 0xfffc |
| 3165 | && operand->shift == 0) |
| 3166 | reloc = BFD_RELOC_PPC_B16; |
| 3167 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 |
| 3168 | && operand->bitm == 0x1fe |
| 3169 | && operand->shift == -1) |
| 3170 | reloc = BFD_RELOC_PPC_VLE_REL8; |
| 3171 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 |
| 3172 | && operand->bitm == 0xfffe |
| 3173 | && operand->shift == 0) |
| 3174 | reloc = BFD_RELOC_PPC_VLE_REL15; |
| 3175 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 |
| 3176 | && operand->bitm == 0x1fffffe |
| 3177 | && operand->shift == 0) |
| 3178 | reloc = BFD_RELOC_PPC_VLE_REL24; |
| 3179 | else if ((operand->flags & PPC_OPERAND_NEGATIVE) == 0 |
| 3180 | && (operand->bitm & 0xfff0) == 0xfff0 |
| 3181 | && operand->shift == 0) |
| 3182 | { |
| 3183 | reloc = BFD_RELOC_16; |
| 3184 | #if defined OBJ_XCOFF || defined OBJ_ELF |
| 3185 | /* Note: the symbol may be not yet defined. */ |
| 3186 | if ((operand->flags & PPC_OPERAND_PARENS) != 0 |
| 3187 | && ppc_is_toc_sym (ex.X_add_symbol)) |
| 3188 | { |
| 3189 | reloc = BFD_RELOC_PPC_TOC16; |
| 3190 | #ifdef OBJ_ELF |
| 3191 | as_warn (_("assuming %s on symbol"), |
| 3192 | ppc_obj64 ? "@toc" : "@xgot"); |
| 3193 | #endif |
| 3194 | } |
| 3195 | #endif |
| 3196 | } |
| 3197 | |
| 3198 | /* For the absolute forms of branches, convert the PC |
| 3199 | relative form back into the absolute. */ |
| 3200 | if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0) |
| 3201 | { |
| 3202 | switch (reloc) |
| 3203 | { |
| 3204 | case BFD_RELOC_PPC_B26: |
| 3205 | reloc = BFD_RELOC_PPC_BA26; |
| 3206 | break; |
| 3207 | case BFD_RELOC_PPC_B16: |
| 3208 | reloc = BFD_RELOC_PPC_BA16; |
| 3209 | break; |
| 3210 | #ifdef OBJ_ELF |
| 3211 | case BFD_RELOC_PPC_B16_BRTAKEN: |
| 3212 | reloc = BFD_RELOC_PPC_BA16_BRTAKEN; |
| 3213 | break; |
| 3214 | case BFD_RELOC_PPC_B16_BRNTAKEN: |
| 3215 | reloc = BFD_RELOC_PPC_BA16_BRNTAKEN; |
| 3216 | break; |
| 3217 | #endif |
| 3218 | default: |
| 3219 | break; |
| 3220 | } |
| 3221 | } |
| 3222 | |
| 3223 | #ifdef OBJ_ELF |
| 3224 | switch (reloc) |
| 3225 | { |
| 3226 | case BFD_RELOC_PPC_TOC16: |
| 3227 | toc_reloc_types |= has_small_toc_reloc; |
| 3228 | break; |
| 3229 | case BFD_RELOC_PPC64_TOC16_LO: |
| 3230 | case BFD_RELOC_PPC64_TOC16_HI: |
| 3231 | case BFD_RELOC_PPC64_TOC16_HA: |
| 3232 | toc_reloc_types |= has_large_toc_reloc; |
| 3233 | break; |
| 3234 | default: |
| 3235 | break; |
| 3236 | } |
| 3237 | |
| 3238 | if (ppc_obj64 |
| 3239 | && (operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0) |
| 3240 | { |
| 3241 | switch (reloc) |
| 3242 | { |
| 3243 | case BFD_RELOC_16: |
| 3244 | reloc = BFD_RELOC_PPC64_ADDR16_DS; |
| 3245 | break; |
| 3246 | case BFD_RELOC_LO16: |
| 3247 | reloc = BFD_RELOC_PPC64_ADDR16_LO_DS; |
| 3248 | break; |
| 3249 | case BFD_RELOC_16_GOTOFF: |
| 3250 | reloc = BFD_RELOC_PPC64_GOT16_DS; |
| 3251 | break; |
| 3252 | case BFD_RELOC_LO16_GOTOFF: |
| 3253 | reloc = BFD_RELOC_PPC64_GOT16_LO_DS; |
| 3254 | break; |
| 3255 | case BFD_RELOC_LO16_PLTOFF: |
| 3256 | reloc = BFD_RELOC_PPC64_PLT16_LO_DS; |
| 3257 | break; |
| 3258 | case BFD_RELOC_16_BASEREL: |
| 3259 | reloc = BFD_RELOC_PPC64_SECTOFF_DS; |
| 3260 | break; |
| 3261 | case BFD_RELOC_LO16_BASEREL: |
| 3262 | reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS; |
| 3263 | break; |
| 3264 | case BFD_RELOC_PPC_TOC16: |
| 3265 | reloc = BFD_RELOC_PPC64_TOC16_DS; |
| 3266 | break; |
| 3267 | case BFD_RELOC_PPC64_TOC16_LO: |
| 3268 | reloc = BFD_RELOC_PPC64_TOC16_LO_DS; |
| 3269 | break; |
| 3270 | case BFD_RELOC_PPC64_PLTGOT16: |
| 3271 | reloc = BFD_RELOC_PPC64_PLTGOT16_DS; |
| 3272 | break; |
| 3273 | case BFD_RELOC_PPC64_PLTGOT16_LO: |
| 3274 | reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS; |
| 3275 | break; |
| 3276 | case BFD_RELOC_PPC_DTPREL16: |
| 3277 | reloc = BFD_RELOC_PPC64_DTPREL16_DS; |
| 3278 | break; |
| 3279 | case BFD_RELOC_PPC_DTPREL16_LO: |
| 3280 | reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS; |
| 3281 | break; |
| 3282 | case BFD_RELOC_PPC_TPREL16: |
| 3283 | reloc = BFD_RELOC_PPC64_TPREL16_DS; |
| 3284 | break; |
| 3285 | case BFD_RELOC_PPC_TPREL16_LO: |
| 3286 | reloc = BFD_RELOC_PPC64_TPREL16_LO_DS; |
| 3287 | break; |
| 3288 | case BFD_RELOC_PPC_GOT_DTPREL16: |
| 3289 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: |
| 3290 | case BFD_RELOC_PPC_GOT_TPREL16: |
| 3291 | case BFD_RELOC_PPC_GOT_TPREL16_LO: |
| 3292 | break; |
| 3293 | default: |
| 3294 | as_bad (_("unsupported relocation for DS offset field")); |
| 3295 | break; |
| 3296 | } |
| 3297 | } |
| 3298 | #endif |
| 3299 | |
| 3300 | /* We need to generate a fixup for this expression. */ |
| 3301 | if (fc >= MAX_INSN_FIXUPS) |
| 3302 | as_fatal (_("too many fixups")); |
| 3303 | fixups[fc].exp = ex; |
| 3304 | fixups[fc].opindex = *opindex_ptr; |
| 3305 | fixups[fc].reloc = reloc; |
| 3306 | ++fc; |
| 3307 | } |
| 3308 | |
| 3309 | if (need_paren) |
| 3310 | { |
| 3311 | endc = ')'; |
| 3312 | need_paren = 0; |
| 3313 | /* If expecting more operands, then we want to see "),". */ |
| 3314 | if (*str == endc && opindex_ptr[1] != 0) |
| 3315 | { |
| 3316 | do |
| 3317 | ++str; |
| 3318 | while (ISSPACE (*str)); |
| 3319 | endc = ','; |
| 3320 | } |
| 3321 | } |
| 3322 | else if ((operand->flags & PPC_OPERAND_PARENS) != 0) |
| 3323 | { |
| 3324 | endc = '('; |
| 3325 | need_paren = 1; |
| 3326 | } |
| 3327 | else |
| 3328 | endc = ','; |
| 3329 | |
| 3330 | /* The call to expression should have advanced str past any |
| 3331 | whitespace. */ |
| 3332 | if (*str != endc |
| 3333 | && (endc != ',' || *str != '\0')) |
| 3334 | { |
| 3335 | if (*str == '\0') |
| 3336 | as_bad (_("syntax error; end of line, expected `%c'"), endc); |
| 3337 | else |
| 3338 | as_bad (_("syntax error; found `%c', expected `%c'"), *str, endc); |
| 3339 | break; |
| 3340 | } |
| 3341 | |
| 3342 | if (*str != '\0') |
| 3343 | ++str; |
| 3344 | } |
| 3345 | |
| 3346 | while (ISSPACE (*str)) |
| 3347 | ++str; |
| 3348 | |
| 3349 | if (*str != '\0') |
| 3350 | as_bad (_("junk at end of line: `%s'"), str); |
| 3351 | |
| 3352 | #ifdef OBJ_ELF |
| 3353 | /* Do we need/want an APUinfo section? */ |
| 3354 | if ((ppc_cpu & (PPC_OPCODE_E500 | PPC_OPCODE_E500MC | PPC_OPCODE_VLE)) != 0 |
| 3355 | && !ppc_obj64) |
| 3356 | { |
| 3357 | /* These are all version "1". */ |
| 3358 | if (opcode->flags & PPC_OPCODE_SPE) |
| 3359 | ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1); |
| 3360 | if (opcode->flags & PPC_OPCODE_ISEL) |
| 3361 | ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1); |
| 3362 | if (opcode->flags & PPC_OPCODE_EFS) |
| 3363 | ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1); |
| 3364 | if (opcode->flags & PPC_OPCODE_BRLOCK) |
| 3365 | ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1); |
| 3366 | if (opcode->flags & PPC_OPCODE_PMR) |
| 3367 | ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1); |
| 3368 | if (opcode->flags & PPC_OPCODE_CACHELCK) |
| 3369 | ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1); |
| 3370 | if (opcode->flags & PPC_OPCODE_RFMCI) |
| 3371 | ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1); |
| 3372 | /* Only set the VLE flag if the instruction has been pulled via |
| 3373 | the VLE instruction set. This way the flag is guaranteed to |
| 3374 | be set for VLE-only instructions or for VLE-only processors, |
| 3375 | however it'll remain clear for dual-mode instructions on |
| 3376 | dual-mode and, more importantly, standard-mode processors. */ |
| 3377 | if ((ppc_cpu & opcode->flags) == PPC_OPCODE_VLE) |
| 3378 | ppc_apuinfo_section_add (PPC_APUINFO_VLE, 1); |
| 3379 | } |
| 3380 | #endif |
| 3381 | |
| 3382 | /* Write out the instruction. */ |
| 3383 | /* Differentiate between two and four byte insns. */ |
| 3384 | if (ppc_mach () == bfd_mach_ppc_vle) |
| 3385 | { |
| 3386 | if (PPC_OP_SE_VLE (insn)) |
| 3387 | insn_length = 2; |
| 3388 | else |
| 3389 | insn_length = 4; |
| 3390 | addr_mod = frag_now_fix () & 1; |
| 3391 | } |
| 3392 | else |
| 3393 | { |
| 3394 | insn_length = 4; |
| 3395 | addr_mod = frag_now_fix () & 3; |
| 3396 | } |
| 3397 | /* All instructions can start on a 2 byte boundary for VLE. */ |
| 3398 | f = frag_more (insn_length); |
| 3399 | if (frag_now->has_code && frag_now->insn_addr != addr_mod) |
| 3400 | { |
| 3401 | if (ppc_mach() == bfd_mach_ppc_vle) |
| 3402 | as_bad (_("instruction address is not a multiple of 2")); |
| 3403 | else |
| 3404 | as_bad (_("instruction address is not a multiple of 4")); |
| 3405 | } |
| 3406 | frag_now->insn_addr = addr_mod; |
| 3407 | frag_now->has_code = 1; |
| 3408 | md_number_to_chars (f, insn, insn_length); |
| 3409 | last_insn = insn; |
| 3410 | last_seg = now_seg; |
| 3411 | last_subseg = now_subseg; |
| 3412 | |
| 3413 | #ifdef OBJ_ELF |
| 3414 | dwarf2_emit_insn (insn_length); |
| 3415 | #endif |
| 3416 | |
| 3417 | /* Create any fixups. */ |
| 3418 | for (i = 0; i < fc; i++) |
| 3419 | { |
| 3420 | fixS *fixP; |
| 3421 | if (fixups[i].reloc != BFD_RELOC_NONE) |
| 3422 | { |
| 3423 | reloc_howto_type *reloc_howto; |
| 3424 | int size; |
| 3425 | int offset; |
| 3426 | |
| 3427 | reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); |
| 3428 | if (!reloc_howto) |
| 3429 | abort (); |
| 3430 | |
| 3431 | size = bfd_get_reloc_size (reloc_howto); |
| 3432 | offset = target_big_endian ? (insn_length - size) : 0; |
| 3433 | |
| 3434 | if (size < 1 || size > 4) |
| 3435 | abort (); |
| 3436 | |
| 3437 | fixP = fix_new_exp (frag_now, |
| 3438 | f - frag_now->fr_literal + offset, |
| 3439 | size, |
| 3440 | &fixups[i].exp, |
| 3441 | reloc_howto->pc_relative, |
| 3442 | fixups[i].reloc); |
| 3443 | } |
| 3444 | else |
| 3445 | { |
| 3446 | const struct powerpc_operand *operand; |
| 3447 | |
| 3448 | operand = &powerpc_operands[fixups[i].opindex]; |
| 3449 | fixP = fix_new_exp (frag_now, |
| 3450 | f - frag_now->fr_literal, |
| 3451 | insn_length, |
| 3452 | &fixups[i].exp, |
| 3453 | (operand->flags & PPC_OPERAND_RELATIVE) != 0, |
| 3454 | BFD_RELOC_NONE); |
| 3455 | } |
| 3456 | fixP->fx_pcrel_adjust = fixups[i].opindex; |
| 3457 | } |
| 3458 | } |
| 3459 | |
| 3460 | /* Handle a macro. Gather all the operands, transform them as |
| 3461 | described by the macro, and call md_assemble recursively. All the |
| 3462 | operands are separated by commas; we don't accept parentheses |
| 3463 | around operands here. */ |
| 3464 | |
| 3465 | static void |
| 3466 | ppc_macro (char *str, const struct powerpc_macro *macro) |
| 3467 | { |
| 3468 | char *operands[10]; |
| 3469 | unsigned int count; |
| 3470 | char *s; |
| 3471 | unsigned int len; |
| 3472 | const char *format; |
| 3473 | unsigned int arg; |
| 3474 | char *send; |
| 3475 | char *complete; |
| 3476 | |
| 3477 | /* Gather the users operands into the operands array. */ |
| 3478 | count = 0; |
| 3479 | s = str; |
| 3480 | while (1) |
| 3481 | { |
| 3482 | if (count >= sizeof operands / sizeof operands[0]) |
| 3483 | break; |
| 3484 | operands[count++] = s; |
| 3485 | s = strchr (s, ','); |
| 3486 | if (s == (char *) NULL) |
| 3487 | break; |
| 3488 | *s++ = '\0'; |
| 3489 | } |
| 3490 | |
| 3491 | if (count != macro->operands) |
| 3492 | { |
| 3493 | as_bad (_("wrong number of operands")); |
| 3494 | return; |
| 3495 | } |
| 3496 | |
| 3497 | /* Work out how large the string must be (the size is unbounded |
| 3498 | because it includes user input). */ |
| 3499 | len = 0; |
| 3500 | format = macro->format; |
| 3501 | while (*format != '\0') |
| 3502 | { |
| 3503 | if (*format != '%') |
| 3504 | { |
| 3505 | ++len; |
| 3506 | ++format; |
| 3507 | } |
| 3508 | else |
| 3509 | { |
| 3510 | arg = strtol (format + 1, &send, 10); |
| 3511 | know (send != format && arg < count); |
| 3512 | len += strlen (operands[arg]); |
| 3513 | format = send; |
| 3514 | } |
| 3515 | } |
| 3516 | |
| 3517 | /* Put the string together. */ |
| 3518 | complete = s = (char *) alloca (len + 1); |
| 3519 | format = macro->format; |
| 3520 | while (*format != '\0') |
| 3521 | { |
| 3522 | if (*format != '%') |
| 3523 | *s++ = *format++; |
| 3524 | else |
| 3525 | { |
| 3526 | arg = strtol (format + 1, &send, 10); |
| 3527 | strcpy (s, operands[arg]); |
| 3528 | s += strlen (s); |
| 3529 | format = send; |
| 3530 | } |
| 3531 | } |
| 3532 | *s = '\0'; |
| 3533 | |
| 3534 | /* Assemble the constructed instruction. */ |
| 3535 | md_assemble (complete); |
| 3536 | } |
| 3537 | \f |
| 3538 | #ifdef OBJ_ELF |
| 3539 | /* For ELF, add support for SHT_ORDERED. */ |
| 3540 | |
| 3541 | int |
| 3542 | ppc_section_type (char *str, size_t len) |
| 3543 | { |
| 3544 | if (len == 7 && strncmp (str, "ordered", 7) == 0) |
| 3545 | return SHT_ORDERED; |
| 3546 | |
| 3547 | return -1; |
| 3548 | } |
| 3549 | |
| 3550 | int |
| 3551 | ppc_section_flags (flagword flags, bfd_vma attr ATTRIBUTE_UNUSED, int type) |
| 3552 | { |
| 3553 | if (type == SHT_ORDERED) |
| 3554 | flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES; |
| 3555 | |
| 3556 | return flags; |
| 3557 | } |
| 3558 | #endif /* OBJ_ELF */ |
| 3559 | |
| 3560 | \f |
| 3561 | /* Pseudo-op handling. */ |
| 3562 | |
| 3563 | /* The .byte pseudo-op. This is similar to the normal .byte |
| 3564 | pseudo-op, but it can also take a single ASCII string. */ |
| 3565 | |
| 3566 | static void |
| 3567 | ppc_byte (int ignore ATTRIBUTE_UNUSED) |
| 3568 | { |
| 3569 | int count = 0; |
| 3570 | |
| 3571 | if (*input_line_pointer != '\"') |
| 3572 | { |
| 3573 | cons (1); |
| 3574 | return; |
| 3575 | } |
| 3576 | |
| 3577 | /* Gather characters. A real double quote is doubled. Unusual |
| 3578 | characters are not permitted. */ |
| 3579 | ++input_line_pointer; |
| 3580 | while (1) |
| 3581 | { |
| 3582 | char c; |
| 3583 | |
| 3584 | c = *input_line_pointer++; |
| 3585 | |
| 3586 | if (c == '\"') |
| 3587 | { |
| 3588 | if (*input_line_pointer != '\"') |
| 3589 | break; |
| 3590 | ++input_line_pointer; |
| 3591 | } |
| 3592 | |
| 3593 | FRAG_APPEND_1_CHAR (c); |
| 3594 | ++count; |
| 3595 | } |
| 3596 | |
| 3597 | if (warn_476 && count != 0 && (now_seg->flags & SEC_CODE) != 0) |
| 3598 | as_warn (_("data in executable section")); |
| 3599 | demand_empty_rest_of_line (); |
| 3600 | } |
| 3601 | \f |
| 3602 | #ifdef OBJ_XCOFF |
| 3603 | |
| 3604 | /* XCOFF specific pseudo-op handling. */ |
| 3605 | |
| 3606 | /* This is set if we are creating a .stabx symbol, since we don't want |
| 3607 | to handle symbol suffixes for such symbols. */ |
| 3608 | static bfd_boolean ppc_stab_symbol; |
| 3609 | |
| 3610 | /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common |
| 3611 | symbols in the .bss segment as though they were local common |
| 3612 | symbols, and uses a different smclas. The native Aix 4.3.3 assembler |
| 3613 | aligns .comm and .lcomm to 4 bytes. */ |
| 3614 | |
| 3615 | static void |
| 3616 | ppc_comm (int lcomm) |
| 3617 | { |
| 3618 | asection *current_seg = now_seg; |
| 3619 | subsegT current_subseg = now_subseg; |
| 3620 | char *name; |
| 3621 | char endc; |
| 3622 | char *end_name; |
| 3623 | offsetT size; |
| 3624 | offsetT align; |
| 3625 | symbolS *lcomm_sym = NULL; |
| 3626 | symbolS *sym; |
| 3627 | char *pfrag; |
| 3628 | |
| 3629 | name = input_line_pointer; |
| 3630 | endc = get_symbol_end (); |
| 3631 | end_name = input_line_pointer; |
| 3632 | *end_name = endc; |
| 3633 | |
| 3634 | if (*input_line_pointer != ',') |
| 3635 | { |
| 3636 | as_bad (_("missing size")); |
| 3637 | ignore_rest_of_line (); |
| 3638 | return; |
| 3639 | } |
| 3640 | ++input_line_pointer; |
| 3641 | |
| 3642 | size = get_absolute_expression (); |
| 3643 | if (size < 0) |
| 3644 | { |
| 3645 | as_bad (_("negative size")); |
| 3646 | ignore_rest_of_line (); |
| 3647 | return; |
| 3648 | } |
| 3649 | |
| 3650 | if (! lcomm) |
| 3651 | { |
| 3652 | /* The third argument to .comm is the alignment. */ |
| 3653 | if (*input_line_pointer != ',') |
| 3654 | align = 2; |
| 3655 | else |
| 3656 | { |
| 3657 | ++input_line_pointer; |
| 3658 | align = get_absolute_expression (); |
| 3659 | if (align <= 0) |
| 3660 | { |
| 3661 | as_warn (_("ignoring bad alignment")); |
| 3662 | align = 2; |
| 3663 | } |
| 3664 | } |
| 3665 | } |
| 3666 | else |
| 3667 | { |
| 3668 | char *lcomm_name; |
| 3669 | char lcomm_endc; |
| 3670 | |
| 3671 | /* The third argument to .lcomm appears to be the real local |
| 3672 | common symbol to create. References to the symbol named in |
| 3673 | the first argument are turned into references to the third |
| 3674 | argument. */ |
| 3675 | if (*input_line_pointer != ',') |
| 3676 | { |
| 3677 | as_bad (_("missing real symbol name")); |
| 3678 | ignore_rest_of_line (); |
| 3679 | return; |
| 3680 | } |
| 3681 | ++input_line_pointer; |
| 3682 | |
| 3683 | lcomm_name = input_line_pointer; |
| 3684 | lcomm_endc = get_symbol_end (); |
| 3685 | |
| 3686 | lcomm_sym = symbol_find_or_make (lcomm_name); |
| 3687 | |
| 3688 | *input_line_pointer = lcomm_endc; |
| 3689 | |
| 3690 | /* The fourth argument to .lcomm is the alignment. */ |
| 3691 | if (*input_line_pointer != ',') |
| 3692 | { |
| 3693 | if (size <= 4) |
| 3694 | align = 2; |
| 3695 | else |
| 3696 | align = 3; |
| 3697 | } |
| 3698 | else |
| 3699 | { |
| 3700 | ++input_line_pointer; |
| 3701 | align = get_absolute_expression (); |
| 3702 | if (align <= 0) |
| 3703 | { |
| 3704 | as_warn (_("ignoring bad alignment")); |
| 3705 | align = 2; |
| 3706 | } |
| 3707 | } |
| 3708 | } |
| 3709 | |
| 3710 | *end_name = '\0'; |
| 3711 | sym = symbol_find_or_make (name); |
| 3712 | *end_name = endc; |
| 3713 | |
| 3714 | if (S_IS_DEFINED (sym) |
| 3715 | || S_GET_VALUE (sym) != 0) |
| 3716 | { |
| 3717 | as_bad (_("attempt to redefine symbol")); |
| 3718 | ignore_rest_of_line (); |
| 3719 | return; |
| 3720 | } |
| 3721 | |
| 3722 | record_alignment (bss_section, align); |
| 3723 | |
| 3724 | if (! lcomm |
| 3725 | || ! S_IS_DEFINED (lcomm_sym)) |
| 3726 | { |
| 3727 | symbolS *def_sym; |
| 3728 | offsetT def_size; |
| 3729 | |
| 3730 | if (! lcomm) |
| 3731 | { |
| 3732 | def_sym = sym; |
| 3733 | def_size = size; |
| 3734 | S_SET_EXTERNAL (sym); |
| 3735 | } |
| 3736 | else |
| 3737 | { |
| 3738 | symbol_get_tc (lcomm_sym)->output = 1; |
| 3739 | def_sym = lcomm_sym; |
| 3740 | def_size = 0; |
| 3741 | } |
| 3742 | |
| 3743 | subseg_set (bss_section, 1); |
| 3744 | frag_align (align, 0, 0); |
| 3745 | |
| 3746 | symbol_set_frag (def_sym, frag_now); |
| 3747 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym, |
| 3748 | def_size, (char *) NULL); |
| 3749 | *pfrag = 0; |
| 3750 | S_SET_SEGMENT (def_sym, bss_section); |
| 3751 | symbol_get_tc (def_sym)->align = align; |
| 3752 | } |
| 3753 | else if (lcomm) |
| 3754 | { |
| 3755 | /* Align the size of lcomm_sym. */ |
| 3756 | symbol_get_frag (lcomm_sym)->fr_offset = |
| 3757 | ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1) |
| 3758 | &~ ((1 << align) - 1)); |
| 3759 | if (align > symbol_get_tc (lcomm_sym)->align) |
| 3760 | symbol_get_tc (lcomm_sym)->align = align; |
| 3761 | } |
| 3762 | |
| 3763 | if (lcomm) |
| 3764 | { |
| 3765 | /* Make sym an offset from lcomm_sym. */ |
| 3766 | S_SET_SEGMENT (sym, bss_section); |
| 3767 | symbol_set_frag (sym, symbol_get_frag (lcomm_sym)); |
| 3768 | S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset); |
| 3769 | symbol_get_frag (lcomm_sym)->fr_offset += size; |
| 3770 | } |
| 3771 | |
| 3772 | subseg_set (current_seg, current_subseg); |
| 3773 | |
| 3774 | demand_empty_rest_of_line (); |
| 3775 | } |
| 3776 | |
| 3777 | /* The .csect pseudo-op. This switches us into a different |
| 3778 | subsegment. The first argument is a symbol whose value is the |
| 3779 | start of the .csect. In COFF, csect symbols get special aux |
| 3780 | entries defined by the x_csect field of union internal_auxent. The |
| 3781 | optional second argument is the alignment (the default is 2). */ |
| 3782 | |
| 3783 | static void |
| 3784 | ppc_csect (int ignore ATTRIBUTE_UNUSED) |
| 3785 | { |
| 3786 | char *name; |
| 3787 | char endc; |
| 3788 | symbolS *sym; |
| 3789 | offsetT align; |
| 3790 | |
| 3791 | name = input_line_pointer; |
| 3792 | endc = get_symbol_end (); |
| 3793 | |
| 3794 | sym = symbol_find_or_make (name); |
| 3795 | |
| 3796 | *input_line_pointer = endc; |
| 3797 | |
| 3798 | if (S_GET_NAME (sym)[0] == '\0') |
| 3799 | { |
| 3800 | /* An unnamed csect is assumed to be [PR]. */ |
| 3801 | symbol_get_tc (sym)->symbol_class = XMC_PR; |
| 3802 | } |
| 3803 | |
| 3804 | align = 2; |
| 3805 | if (*input_line_pointer == ',') |
| 3806 | { |
| 3807 | ++input_line_pointer; |
| 3808 | align = get_absolute_expression (); |
| 3809 | } |
| 3810 | |
| 3811 | ppc_change_csect (sym, align); |
| 3812 | |
| 3813 | demand_empty_rest_of_line (); |
| 3814 | } |
| 3815 | |
| 3816 | /* Change to a different csect. */ |
| 3817 | |
| 3818 | static void |
| 3819 | ppc_change_csect (symbolS *sym, offsetT align) |
| 3820 | { |
| 3821 | if (S_IS_DEFINED (sym)) |
| 3822 | subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg); |
| 3823 | else |
| 3824 | { |
| 3825 | symbolS **list_ptr; |
| 3826 | int after_toc; |
| 3827 | int hold_chunksize; |
| 3828 | symbolS *list; |
| 3829 | int is_code; |
| 3830 | segT sec; |
| 3831 | |
| 3832 | /* This is a new csect. We need to look at the symbol class to |
| 3833 | figure out whether it should go in the text section or the |
| 3834 | data section. */ |
| 3835 | after_toc = 0; |
| 3836 | is_code = 0; |
| 3837 | switch (symbol_get_tc (sym)->symbol_class) |
| 3838 | { |
| 3839 | case XMC_PR: |
| 3840 | case XMC_RO: |
| 3841 | case XMC_DB: |
| 3842 | case XMC_GL: |
| 3843 | case XMC_XO: |
| 3844 | case XMC_SV: |
| 3845 | case XMC_TI: |
| 3846 | case XMC_TB: |
| 3847 | S_SET_SEGMENT (sym, text_section); |
| 3848 | symbol_get_tc (sym)->subseg = ppc_text_subsegment; |
| 3849 | ++ppc_text_subsegment; |
| 3850 | list_ptr = &ppc_text_csects; |
| 3851 | is_code = 1; |
| 3852 | break; |
| 3853 | case XMC_RW: |
| 3854 | case XMC_TC0: |
| 3855 | case XMC_TC: |
| 3856 | case XMC_DS: |
| 3857 | case XMC_UA: |
| 3858 | case XMC_BS: |
| 3859 | case XMC_UC: |
| 3860 | if (ppc_toc_csect != NULL |
| 3861 | && (symbol_get_tc (ppc_toc_csect)->subseg + 1 |
| 3862 | == ppc_data_subsegment)) |
| 3863 | after_toc = 1; |
| 3864 | S_SET_SEGMENT (sym, data_section); |
| 3865 | symbol_get_tc (sym)->subseg = ppc_data_subsegment; |
| 3866 | ++ppc_data_subsegment; |
| 3867 | list_ptr = &ppc_data_csects; |
| 3868 | break; |
| 3869 | default: |
| 3870 | abort (); |
| 3871 | } |
| 3872 | |
| 3873 | /* We set the obstack chunk size to a small value before |
| 3874 | changing subsegments, so that we don't use a lot of memory |
| 3875 | space for what may be a small section. */ |
| 3876 | hold_chunksize = chunksize; |
| 3877 | chunksize = 64; |
| 3878 | |
| 3879 | sec = subseg_new (segment_name (S_GET_SEGMENT (sym)), |
| 3880 | symbol_get_tc (sym)->subseg); |
| 3881 | |
| 3882 | chunksize = hold_chunksize; |
| 3883 | |
| 3884 | if (after_toc) |
| 3885 | ppc_after_toc_frag = frag_now; |
| 3886 | |
| 3887 | record_alignment (sec, align); |
| 3888 | if (is_code) |
| 3889 | frag_align_code (align, 0); |
| 3890 | else |
| 3891 | frag_align (align, 0, 0); |
| 3892 | |
| 3893 | symbol_set_frag (sym, frag_now); |
| 3894 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); |
| 3895 | |
| 3896 | symbol_get_tc (sym)->align = align; |
| 3897 | symbol_get_tc (sym)->output = 1; |
| 3898 | symbol_get_tc (sym)->within = sym; |
| 3899 | |
| 3900 | for (list = *list_ptr; |
| 3901 | symbol_get_tc (list)->next != (symbolS *) NULL; |
| 3902 | list = symbol_get_tc (list)->next) |
| 3903 | ; |
| 3904 | symbol_get_tc (list)->next = sym; |
| 3905 | |
| 3906 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); |
| 3907 | symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP, |
| 3908 | &symbol_lastP); |
| 3909 | } |
| 3910 | |
| 3911 | ppc_current_csect = sym; |
| 3912 | } |
| 3913 | |
| 3914 | static void |
| 3915 | ppc_change_debug_section (unsigned int idx, subsegT subseg) |
| 3916 | { |
| 3917 | segT sec; |
| 3918 | flagword oldflags; |
| 3919 | const struct xcoff_dwsect_name *dw = &xcoff_dwsect_names[idx]; |
| 3920 | |
| 3921 | sec = subseg_new (dw->name, subseg); |
| 3922 | oldflags = bfd_get_section_flags (stdoutput, sec); |
| 3923 | if (oldflags == SEC_NO_FLAGS) |
| 3924 | { |
| 3925 | /* Just created section. */ |
| 3926 | gas_assert (dw_sections[idx].sect == NULL); |
| 3927 | |
| 3928 | bfd_set_section_flags (stdoutput, sec, SEC_DEBUGGING); |
| 3929 | bfd_set_section_alignment (stdoutput, sec, 0); |
| 3930 | dw_sections[idx].sect = sec; |
| 3931 | } |
| 3932 | |
| 3933 | /* Not anymore in a csect. */ |
| 3934 | ppc_current_csect = NULL; |
| 3935 | } |
| 3936 | |
| 3937 | /* The .dwsect pseudo-op. Defines a DWARF section. Syntax is: |
| 3938 | .dwsect flag [, opt-label ] |
| 3939 | */ |
| 3940 | |
| 3941 | static void |
| 3942 | ppc_dwsect (int ignore ATTRIBUTE_UNUSED) |
| 3943 | { |
| 3944 | offsetT flag; |
| 3945 | symbolS *opt_label; |
| 3946 | const struct xcoff_dwsect_name *dw; |
| 3947 | struct dw_subsection *subseg; |
| 3948 | struct dw_section *dws; |
| 3949 | int i; |
| 3950 | |
| 3951 | /* Find section. */ |
| 3952 | flag = get_absolute_expression (); |
| 3953 | dw = NULL; |
| 3954 | for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++) |
| 3955 | if (xcoff_dwsect_names[i].flag == flag) |
| 3956 | { |
| 3957 | dw = &xcoff_dwsect_names[i]; |
| 3958 | break; |
| 3959 | } |
| 3960 | |
| 3961 | /* Parse opt-label. */ |
| 3962 | if (*input_line_pointer == ',') |
| 3963 | { |
| 3964 | const char *label; |
| 3965 | char c; |
| 3966 | |
| 3967 | ++input_line_pointer; |
| 3968 | |
| 3969 | label = input_line_pointer; |
| 3970 | c = get_symbol_end (); |
| 3971 | opt_label = symbol_find_or_make (label); |
| 3972 | *input_line_pointer = c; |
| 3973 | } |
| 3974 | else |
| 3975 | opt_label = NULL; |
| 3976 | |
| 3977 | demand_empty_rest_of_line (); |
| 3978 | |
| 3979 | /* Return now in case of unknown subsection. */ |
| 3980 | if (dw == NULL) |
| 3981 | { |
| 3982 | as_bad (_("no known dwarf XCOFF section for flag 0x%08x\n"), |
| 3983 | (unsigned)flag); |
| 3984 | return; |
| 3985 | } |
| 3986 | |
| 3987 | /* Find the subsection. */ |
| 3988 | dws = &dw_sections[i]; |
| 3989 | subseg = NULL; |
| 3990 | if (opt_label != NULL && S_IS_DEFINED (opt_label)) |
| 3991 | { |
| 3992 | /* Sanity check (note that in theory S_GET_SEGMENT mustn't be null). */ |
| 3993 | if (dws->sect == NULL || S_GET_SEGMENT (opt_label) != dws->sect) |
| 3994 | { |
| 3995 | as_bad (_("label %s was not defined in this dwarf section"), |
| 3996 | S_GET_NAME (opt_label)); |
| 3997 | subseg = dws->anon_subseg; |
| 3998 | opt_label = NULL; |
| 3999 | } |
| 4000 | else |
| 4001 | subseg = symbol_get_tc (opt_label)->u.dw; |
| 4002 | } |
| 4003 | |
| 4004 | if (subseg != NULL) |
| 4005 | { |
| 4006 | /* Switch to the subsection. */ |
| 4007 | ppc_change_debug_section (i, subseg->subseg); |
| 4008 | } |
| 4009 | else |
| 4010 | { |
| 4011 | /* Create a new dw subsection. */ |
| 4012 | subseg = (struct dw_subsection *) |
| 4013 | xmalloc (sizeof (struct dw_subsection)); |
| 4014 | |
| 4015 | if (opt_label == NULL) |
| 4016 | { |
| 4017 | /* The anonymous one. */ |
| 4018 | subseg->subseg = 0; |
| 4019 | subseg->link = NULL; |
| 4020 | dws->anon_subseg = subseg; |
| 4021 | } |
| 4022 | else |
| 4023 | { |
| 4024 | /* A named one. */ |
| 4025 | if (dws->list_subseg != NULL) |
| 4026 | subseg->subseg = dws->list_subseg->subseg + 1; |
| 4027 | else |
| 4028 | subseg->subseg = 1; |
| 4029 | |
| 4030 | subseg->link = dws->list_subseg; |
| 4031 | dws->list_subseg = subseg; |
| 4032 | symbol_get_tc (opt_label)->u.dw = subseg; |
| 4033 | } |
| 4034 | |
| 4035 | ppc_change_debug_section (i, subseg->subseg); |
| 4036 | |
| 4037 | if (dw->def_size) |
| 4038 | { |
| 4039 | /* Add the length field. */ |
| 4040 | expressionS *exp = &subseg->end_exp; |
| 4041 | int sz; |
| 4042 | |
| 4043 | if (opt_label != NULL) |
| 4044 | symbol_set_value_now (opt_label); |
| 4045 | |
| 4046 | /* Add the length field. Note that according to the AIX assembler |
| 4047 | manual, the size of the length field is 4 for powerpc32 but |
| 4048 | 12 for powerpc64. */ |
| 4049 | if (ppc_obj64) |
| 4050 | { |
| 4051 | /* Write the 64bit marker. */ |
| 4052 | md_number_to_chars (frag_more (4), -1, 4); |
| 4053 | } |
| 4054 | |
| 4055 | exp->X_op = O_subtract; |
| 4056 | exp->X_op_symbol = symbol_temp_new_now (); |
| 4057 | exp->X_add_symbol = symbol_temp_make (); |
| 4058 | |
| 4059 | sz = ppc_obj64 ? 8 : 4; |
| 4060 | exp->X_add_number = -sz; |
| 4061 | emit_expr (exp, sz); |
| 4062 | } |
| 4063 | } |
| 4064 | } |
| 4065 | |
| 4066 | /* This function handles the .text and .data pseudo-ops. These |
| 4067 | pseudo-ops aren't really used by XCOFF; we implement them for the |
| 4068 | convenience of people who aren't used to XCOFF. */ |
| 4069 | |
| 4070 | static void |
| 4071 | ppc_section (int type) |
| 4072 | { |
| 4073 | const char *name; |
| 4074 | symbolS *sym; |
| 4075 | |
| 4076 | if (type == 't') |
| 4077 | name = ".text[PR]"; |
| 4078 | else if (type == 'd') |
| 4079 | name = ".data[RW]"; |
| 4080 | else |
| 4081 | abort (); |
| 4082 | |
| 4083 | sym = symbol_find_or_make (name); |
| 4084 | |
| 4085 | ppc_change_csect (sym, 2); |
| 4086 | |
| 4087 | demand_empty_rest_of_line (); |
| 4088 | } |
| 4089 | |
| 4090 | /* This function handles the .section pseudo-op. This is mostly to |
| 4091 | give an error, since XCOFF only supports .text, .data and .bss, but |
| 4092 | we do permit the user to name the text or data section. */ |
| 4093 | |
| 4094 | static void |
| 4095 | ppc_named_section (int ignore ATTRIBUTE_UNUSED) |
| 4096 | { |
| 4097 | char *user_name; |
| 4098 | const char *real_name; |
| 4099 | char c; |
| 4100 | symbolS *sym; |
| 4101 | |
| 4102 | user_name = input_line_pointer; |
| 4103 | c = get_symbol_end (); |
| 4104 | |
| 4105 | if (strcmp (user_name, ".text") == 0) |
| 4106 | real_name = ".text[PR]"; |
| 4107 | else if (strcmp (user_name, ".data") == 0) |
| 4108 | real_name = ".data[RW]"; |
| 4109 | else |
| 4110 | { |
| 4111 | as_bad (_("the XCOFF file format does not support arbitrary sections")); |
| 4112 | *input_line_pointer = c; |
| 4113 | ignore_rest_of_line (); |
| 4114 | return; |
| 4115 | } |
| 4116 | |
| 4117 | *input_line_pointer = c; |
| 4118 | |
| 4119 | sym = symbol_find_or_make (real_name); |
| 4120 | |
| 4121 | ppc_change_csect (sym, 2); |
| 4122 | |
| 4123 | demand_empty_rest_of_line (); |
| 4124 | } |
| 4125 | |
| 4126 | /* The .extern pseudo-op. We create an undefined symbol. */ |
| 4127 | |
| 4128 | static void |
| 4129 | ppc_extern (int ignore ATTRIBUTE_UNUSED) |
| 4130 | { |
| 4131 | char *name; |
| 4132 | char endc; |
| 4133 | |
| 4134 | name = input_line_pointer; |
| 4135 | endc = get_symbol_end (); |
| 4136 | |
| 4137 | (void) symbol_find_or_make (name); |
| 4138 | |
| 4139 | *input_line_pointer = endc; |
| 4140 | |
| 4141 | demand_empty_rest_of_line (); |
| 4142 | } |
| 4143 | |
| 4144 | /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */ |
| 4145 | |
| 4146 | static void |
| 4147 | ppc_lglobl (int ignore ATTRIBUTE_UNUSED) |
| 4148 | { |
| 4149 | char *name; |
| 4150 | char endc; |
| 4151 | symbolS *sym; |
| 4152 | |
| 4153 | name = input_line_pointer; |
| 4154 | endc = get_symbol_end (); |
| 4155 | |
| 4156 | sym = symbol_find_or_make (name); |
| 4157 | |
| 4158 | *input_line_pointer = endc; |
| 4159 | |
| 4160 | symbol_get_tc (sym)->output = 1; |
| 4161 | |
| 4162 | demand_empty_rest_of_line (); |
| 4163 | } |
| 4164 | |
| 4165 | /* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF |
| 4166 | relocations at the beginning of the current csect. |
| 4167 | |
| 4168 | (In principle, there's no reason why the relocations _have_ to be at |
| 4169 | the beginning. Anywhere in the csect would do. However, inserting |
| 4170 | at the beginning is what the native assmebler does, and it helps to |
| 4171 | deal with cases where the .ref statements follow the section contents.) |
| 4172 | |
| 4173 | ??? .refs don't work for empty .csects. However, the native assembler |
| 4174 | doesn't report an error in this case, and neither yet do we. */ |
| 4175 | |
| 4176 | static void |
| 4177 | ppc_ref (int ignore ATTRIBUTE_UNUSED) |
| 4178 | { |
| 4179 | char *name; |
| 4180 | char c; |
| 4181 | |
| 4182 | if (ppc_current_csect == NULL) |
| 4183 | { |
| 4184 | as_bad (_(".ref outside .csect")); |
| 4185 | ignore_rest_of_line (); |
| 4186 | return; |
| 4187 | } |
| 4188 | |
| 4189 | do |
| 4190 | { |
| 4191 | name = input_line_pointer; |
| 4192 | c = get_symbol_end (); |
| 4193 | |
| 4194 | fix_at_start (symbol_get_frag (ppc_current_csect), 0, |
| 4195 | symbol_find_or_make (name), 0, FALSE, BFD_RELOC_NONE); |
| 4196 | |
| 4197 | *input_line_pointer = c; |
| 4198 | SKIP_WHITESPACE (); |
| 4199 | c = *input_line_pointer; |
| 4200 | if (c == ',') |
| 4201 | { |
| 4202 | input_line_pointer++; |
| 4203 | SKIP_WHITESPACE (); |
| 4204 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
| 4205 | { |
| 4206 | as_bad (_("missing symbol name")); |
| 4207 | ignore_rest_of_line (); |
| 4208 | return; |
| 4209 | } |
| 4210 | } |
| 4211 | } |
| 4212 | while (c == ','); |
| 4213 | |
| 4214 | demand_empty_rest_of_line (); |
| 4215 | } |
| 4216 | |
| 4217 | /* The .rename pseudo-op. The RS/6000 assembler can rename symbols, |
| 4218 | although I don't know why it bothers. */ |
| 4219 | |
| 4220 | static void |
| 4221 | ppc_rename (int ignore ATTRIBUTE_UNUSED) |
| 4222 | { |
| 4223 | char *name; |
| 4224 | char endc; |
| 4225 | symbolS *sym; |
| 4226 | int len; |
| 4227 | |
| 4228 | name = input_line_pointer; |
| 4229 | endc = get_symbol_end (); |
| 4230 | |
| 4231 | sym = symbol_find_or_make (name); |
| 4232 | |
| 4233 | *input_line_pointer = endc; |
| 4234 | |
| 4235 | if (*input_line_pointer != ',') |
| 4236 | { |
| 4237 | as_bad (_("missing rename string")); |
| 4238 | ignore_rest_of_line (); |
| 4239 | return; |
| 4240 | } |
| 4241 | ++input_line_pointer; |
| 4242 | |
| 4243 | symbol_get_tc (sym)->real_name = demand_copy_C_string (&len); |
| 4244 | |
| 4245 | demand_empty_rest_of_line (); |
| 4246 | } |
| 4247 | |
| 4248 | /* The .stabx pseudo-op. This is similar to a normal .stabs |
| 4249 | pseudo-op, but slightly different. A sample is |
| 4250 | .stabx "main:F-1",.main,142,0 |
| 4251 | The first argument is the symbol name to create. The second is the |
| 4252 | value, and the third is the storage class. The fourth seems to be |
| 4253 | always zero, and I am assuming it is the type. */ |
| 4254 | |
| 4255 | static void |
| 4256 | ppc_stabx (int ignore ATTRIBUTE_UNUSED) |
| 4257 | { |
| 4258 | char *name; |
| 4259 | int len; |
| 4260 | symbolS *sym; |
| 4261 | expressionS exp; |
| 4262 | |
| 4263 | name = demand_copy_C_string (&len); |
| 4264 | |
| 4265 | if (*input_line_pointer != ',') |
| 4266 | { |
| 4267 | as_bad (_("missing value")); |
| 4268 | return; |
| 4269 | } |
| 4270 | ++input_line_pointer; |
| 4271 | |
| 4272 | ppc_stab_symbol = TRUE; |
| 4273 | sym = symbol_make (name); |
| 4274 | ppc_stab_symbol = FALSE; |
| 4275 | |
| 4276 | symbol_get_tc (sym)->real_name = name; |
| 4277 | |
| 4278 | (void) expression (&exp); |
| 4279 | |
| 4280 | switch (exp.X_op) |
| 4281 | { |
| 4282 | case O_illegal: |
| 4283 | case O_absent: |
| 4284 | case O_big: |
| 4285 | as_bad (_("illegal .stabx expression; zero assumed")); |
| 4286 | exp.X_add_number = 0; |
| 4287 | /* Fall through. */ |
| 4288 | case O_constant: |
| 4289 | S_SET_VALUE (sym, (valueT) exp.X_add_number); |
| 4290 | symbol_set_frag (sym, &zero_address_frag); |
| 4291 | break; |
| 4292 | |
| 4293 | case O_symbol: |
| 4294 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section) |
| 4295 | symbol_set_value_expression (sym, &exp); |
| 4296 | else |
| 4297 | { |
| 4298 | S_SET_VALUE (sym, |
| 4299 | exp.X_add_number + S_GET_VALUE (exp.X_add_symbol)); |
| 4300 | symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol)); |
| 4301 | } |
| 4302 | break; |
| 4303 | |
| 4304 | default: |
| 4305 | /* The value is some complex expression. This will probably |
| 4306 | fail at some later point, but this is probably the right |
| 4307 | thing to do here. */ |
| 4308 | symbol_set_value_expression (sym, &exp); |
| 4309 | break; |
| 4310 | } |
| 4311 | |
| 4312 | S_SET_SEGMENT (sym, ppc_coff_debug_section); |
| 4313 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
| 4314 | |
| 4315 | if (*input_line_pointer != ',') |
| 4316 | { |
| 4317 | as_bad (_("missing class")); |
| 4318 | return; |
| 4319 | } |
| 4320 | ++input_line_pointer; |
| 4321 | |
| 4322 | S_SET_STORAGE_CLASS (sym, get_absolute_expression ()); |
| 4323 | |
| 4324 | if (*input_line_pointer != ',') |
| 4325 | { |
| 4326 | as_bad (_("missing type")); |
| 4327 | return; |
| 4328 | } |
| 4329 | ++input_line_pointer; |
| 4330 | |
| 4331 | S_SET_DATA_TYPE (sym, get_absolute_expression ()); |
| 4332 | |
| 4333 | symbol_get_tc (sym)->output = 1; |
| 4334 | |
| 4335 | if (S_GET_STORAGE_CLASS (sym) == C_STSYM) |
| 4336 | { |
| 4337 | /* In this case : |
| 4338 | |
| 4339 | .bs name |
| 4340 | .stabx "z",arrays_,133,0 |
| 4341 | .es |
| 4342 | |
| 4343 | .comm arrays_,13768,3 |
| 4344 | |
| 4345 | resolve_symbol_value will copy the exp's "within" into sym's when the |
| 4346 | offset is 0. Since this seems to be corner case problem, |
| 4347 | only do the correction for storage class C_STSYM. A better solution |
| 4348 | would be to have the tc field updated in ppc_symbol_new_hook. */ |
| 4349 | |
| 4350 | if (exp.X_op == O_symbol) |
| 4351 | { |
| 4352 | if (ppc_current_block == NULL) |
| 4353 | as_bad (_(".stabx of storage class stsym must be within .bs/.es")); |
| 4354 | |
| 4355 | symbol_get_tc (sym)->within = ppc_current_block; |
| 4356 | symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block; |
| 4357 | } |
| 4358 | } |
| 4359 | |
| 4360 | if (exp.X_op != O_symbol |
| 4361 | || ! S_IS_EXTERNAL (exp.X_add_symbol) |
| 4362 | || S_GET_SEGMENT (exp.X_add_symbol) != bss_section) |
| 4363 | ppc_frob_label (sym); |
| 4364 | else |
| 4365 | { |
| 4366 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); |
| 4367 | symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP); |
| 4368 | if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol) |
| 4369 | symbol_get_tc (ppc_current_csect)->within = sym; |
| 4370 | } |
| 4371 | |
| 4372 | demand_empty_rest_of_line (); |
| 4373 | } |
| 4374 | |
| 4375 | /* The .function pseudo-op. This takes several arguments. The first |
| 4376 | argument seems to be the external name of the symbol. The second |
| 4377 | argument seems to be the label for the start of the function. gcc |
| 4378 | uses the same name for both. I have no idea what the third and |
| 4379 | fourth arguments are meant to be. The optional fifth argument is |
| 4380 | an expression for the size of the function. In COFF this symbol |
| 4381 | gets an aux entry like that used for a csect. */ |
| 4382 | |
| 4383 | static void |
| 4384 | ppc_function (int ignore ATTRIBUTE_UNUSED) |
| 4385 | { |
| 4386 | char *name; |
| 4387 | char endc; |
| 4388 | char *s; |
| 4389 | symbolS *ext_sym; |
| 4390 | symbolS *lab_sym; |
| 4391 | |
| 4392 | name = input_line_pointer; |
| 4393 | endc = get_symbol_end (); |
| 4394 | |
| 4395 | /* Ignore any [PR] suffix. */ |
| 4396 | name = ppc_canonicalize_symbol_name (name); |
| 4397 | s = strchr (name, '['); |
| 4398 | if (s != (char *) NULL |
| 4399 | && strcmp (s + 1, "PR]") == 0) |
| 4400 | *s = '\0'; |
| 4401 | |
| 4402 | ext_sym = symbol_find_or_make (name); |
| 4403 | |
| 4404 | *input_line_pointer = endc; |
| 4405 | |
| 4406 | if (*input_line_pointer != ',') |
| 4407 | { |
| 4408 | as_bad (_("missing symbol name")); |
| 4409 | ignore_rest_of_line (); |
| 4410 | return; |
| 4411 | } |
| 4412 | ++input_line_pointer; |
| 4413 | |
| 4414 | name = input_line_pointer; |
| 4415 | endc = get_symbol_end (); |
| 4416 | |
| 4417 | lab_sym = symbol_find_or_make (name); |
| 4418 | |
| 4419 | *input_line_pointer = endc; |
| 4420 | |
| 4421 | if (ext_sym != lab_sym) |
| 4422 | { |
| 4423 | expressionS exp; |
| 4424 | |
| 4425 | exp.X_op = O_symbol; |
| 4426 | exp.X_add_symbol = lab_sym; |
| 4427 | exp.X_op_symbol = NULL; |
| 4428 | exp.X_add_number = 0; |
| 4429 | exp.X_unsigned = 0; |
| 4430 | symbol_set_value_expression (ext_sym, &exp); |
| 4431 | } |
| 4432 | |
| 4433 | if (symbol_get_tc (ext_sym)->symbol_class == -1) |
| 4434 | symbol_get_tc (ext_sym)->symbol_class = XMC_PR; |
| 4435 | symbol_get_tc (ext_sym)->output = 1; |
| 4436 | |
| 4437 | if (*input_line_pointer == ',') |
| 4438 | { |
| 4439 | expressionS exp; |
| 4440 | |
| 4441 | /* Ignore the third argument. */ |
| 4442 | ++input_line_pointer; |
| 4443 | expression (& exp); |
| 4444 | if (*input_line_pointer == ',') |
| 4445 | { |
| 4446 | /* Ignore the fourth argument. */ |
| 4447 | ++input_line_pointer; |
| 4448 | expression (& exp); |
| 4449 | if (*input_line_pointer == ',') |
| 4450 | { |
| 4451 | /* The fifth argument is the function size. */ |
| 4452 | ++input_line_pointer; |
| 4453 | symbol_get_tc (ext_sym)->u.size = symbol_new |
| 4454 | ("L0\001", absolute_section,(valueT) 0, &zero_address_frag); |
| 4455 | pseudo_set (symbol_get_tc (ext_sym)->u.size); |
| 4456 | } |
| 4457 | } |
| 4458 | } |
| 4459 | |
| 4460 | S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); |
| 4461 | SF_SET_FUNCTION (ext_sym); |
| 4462 | SF_SET_PROCESS (ext_sym); |
| 4463 | coff_add_linesym (ext_sym); |
| 4464 | |
| 4465 | demand_empty_rest_of_line (); |
| 4466 | } |
| 4467 | |
| 4468 | /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named |
| 4469 | ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym |
| 4470 | with the correct line number */ |
| 4471 | |
| 4472 | static symbolS *saved_bi_sym = 0; |
| 4473 | |
| 4474 | static void |
| 4475 | ppc_bf (int ignore ATTRIBUTE_UNUSED) |
| 4476 | { |
| 4477 | symbolS *sym; |
| 4478 | |
| 4479 | sym = symbol_make (".bf"); |
| 4480 | S_SET_SEGMENT (sym, text_section); |
| 4481 | symbol_set_frag (sym, frag_now); |
| 4482 | S_SET_VALUE (sym, frag_now_fix ()); |
| 4483 | S_SET_STORAGE_CLASS (sym, C_FCN); |
| 4484 | |
| 4485 | coff_line_base = get_absolute_expression (); |
| 4486 | |
| 4487 | S_SET_NUMBER_AUXILIARY (sym, 1); |
| 4488 | SA_SET_SYM_LNNO (sym, coff_line_base); |
| 4489 | |
| 4490 | /* Line number for bi. */ |
| 4491 | if (saved_bi_sym) |
| 4492 | { |
| 4493 | S_SET_VALUE (saved_bi_sym, coff_n_line_nos); |
| 4494 | saved_bi_sym = 0; |
| 4495 | } |
| 4496 | |
| 4497 | |
| 4498 | symbol_get_tc (sym)->output = 1; |
| 4499 | |
| 4500 | ppc_frob_label (sym); |
| 4501 | |
| 4502 | demand_empty_rest_of_line (); |
| 4503 | } |
| 4504 | |
| 4505 | /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named |
| 4506 | ".ef", except that the line number is absolute, not relative to the |
| 4507 | most recent ".bf" symbol. */ |
| 4508 | |
| 4509 | static void |
| 4510 | ppc_ef (int ignore ATTRIBUTE_UNUSED) |
| 4511 | { |
| 4512 | symbolS *sym; |
| 4513 | |
| 4514 | sym = symbol_make (".ef"); |
| 4515 | S_SET_SEGMENT (sym, text_section); |
| 4516 | symbol_set_frag (sym, frag_now); |
| 4517 | S_SET_VALUE (sym, frag_now_fix ()); |
| 4518 | S_SET_STORAGE_CLASS (sym, C_FCN); |
| 4519 | S_SET_NUMBER_AUXILIARY (sym, 1); |
| 4520 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); |
| 4521 | symbol_get_tc (sym)->output = 1; |
| 4522 | |
| 4523 | ppc_frob_label (sym); |
| 4524 | |
| 4525 | demand_empty_rest_of_line (); |
| 4526 | } |
| 4527 | |
| 4528 | /* The .bi and .ei pseudo-ops. These take a string argument and |
| 4529 | generates a C_BINCL or C_EINCL symbol, which goes at the start of |
| 4530 | the symbol list. The value of .bi will be know when the next .bf |
| 4531 | is encountered. */ |
| 4532 | |
| 4533 | static void |
| 4534 | ppc_biei (int ei) |
| 4535 | { |
| 4536 | static symbolS *last_biei; |
| 4537 | |
| 4538 | char *name; |
| 4539 | int len; |
| 4540 | symbolS *sym; |
| 4541 | symbolS *look; |
| 4542 | |
| 4543 | name = demand_copy_C_string (&len); |
| 4544 | |
| 4545 | /* The value of these symbols is actually file offset. Here we set |
| 4546 | the value to the index into the line number entries. In |
| 4547 | ppc_frob_symbols we set the fix_line field, which will cause BFD |
| 4548 | to do the right thing. */ |
| 4549 | |
| 4550 | sym = symbol_make (name); |
| 4551 | /* obj-coff.c currently only handles line numbers correctly in the |
| 4552 | .text section. */ |
| 4553 | S_SET_SEGMENT (sym, text_section); |
| 4554 | S_SET_VALUE (sym, coff_n_line_nos); |
| 4555 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
| 4556 | |
| 4557 | S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL); |
| 4558 | symbol_get_tc (sym)->output = 1; |
| 4559 | |
| 4560 | /* Save bi. */ |
| 4561 | if (ei) |
| 4562 | saved_bi_sym = 0; |
| 4563 | else |
| 4564 | saved_bi_sym = sym; |
| 4565 | |
| 4566 | for (look = last_biei ? last_biei : symbol_rootP; |
| 4567 | (look != (symbolS *) NULL |
| 4568 | && (S_GET_STORAGE_CLASS (look) == C_FILE |
| 4569 | || S_GET_STORAGE_CLASS (look) == C_BINCL |
| 4570 | || S_GET_STORAGE_CLASS (look) == C_EINCL)); |
| 4571 | look = symbol_next (look)) |
| 4572 | ; |
| 4573 | if (look != (symbolS *) NULL) |
| 4574 | { |
| 4575 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); |
| 4576 | symbol_insert (sym, look, &symbol_rootP, &symbol_lastP); |
| 4577 | last_biei = sym; |
| 4578 | } |
| 4579 | |
| 4580 | demand_empty_rest_of_line (); |
| 4581 | } |
| 4582 | |
| 4583 | /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs". |
| 4584 | There is one argument, which is a csect symbol. The value of the |
| 4585 | .bs symbol is the index of this csect symbol. */ |
| 4586 | |
| 4587 | static void |
| 4588 | ppc_bs (int ignore ATTRIBUTE_UNUSED) |
| 4589 | { |
| 4590 | char *name; |
| 4591 | char endc; |
| 4592 | symbolS *csect; |
| 4593 | symbolS *sym; |
| 4594 | |
| 4595 | if (ppc_current_block != NULL) |
| 4596 | as_bad (_("nested .bs blocks")); |
| 4597 | |
| 4598 | name = input_line_pointer; |
| 4599 | endc = get_symbol_end (); |
| 4600 | |
| 4601 | csect = symbol_find_or_make (name); |
| 4602 | |
| 4603 | *input_line_pointer = endc; |
| 4604 | |
| 4605 | sym = symbol_make (".bs"); |
| 4606 | S_SET_SEGMENT (sym, now_seg); |
| 4607 | S_SET_STORAGE_CLASS (sym, C_BSTAT); |
| 4608 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
| 4609 | symbol_get_tc (sym)->output = 1; |
| 4610 | |
| 4611 | symbol_get_tc (sym)->within = csect; |
| 4612 | |
| 4613 | ppc_frob_label (sym); |
| 4614 | |
| 4615 | ppc_current_block = sym; |
| 4616 | |
| 4617 | demand_empty_rest_of_line (); |
| 4618 | } |
| 4619 | |
| 4620 | /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */ |
| 4621 | |
| 4622 | static void |
| 4623 | ppc_es (int ignore ATTRIBUTE_UNUSED) |
| 4624 | { |
| 4625 | symbolS *sym; |
| 4626 | |
| 4627 | if (ppc_current_block == NULL) |
| 4628 | as_bad (_(".es without preceding .bs")); |
| 4629 | |
| 4630 | sym = symbol_make (".es"); |
| 4631 | S_SET_SEGMENT (sym, now_seg); |
| 4632 | S_SET_STORAGE_CLASS (sym, C_ESTAT); |
| 4633 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
| 4634 | symbol_get_tc (sym)->output = 1; |
| 4635 | |
| 4636 | ppc_frob_label (sym); |
| 4637 | |
| 4638 | ppc_current_block = NULL; |
| 4639 | |
| 4640 | demand_empty_rest_of_line (); |
| 4641 | } |
| 4642 | |
| 4643 | /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a |
| 4644 | line number. */ |
| 4645 | |
| 4646 | static void |
| 4647 | ppc_bb (int ignore ATTRIBUTE_UNUSED) |
| 4648 | { |
| 4649 | symbolS *sym; |
| 4650 | |
| 4651 | sym = symbol_make (".bb"); |
| 4652 | S_SET_SEGMENT (sym, text_section); |
| 4653 | symbol_set_frag (sym, frag_now); |
| 4654 | S_SET_VALUE (sym, frag_now_fix ()); |
| 4655 | S_SET_STORAGE_CLASS (sym, C_BLOCK); |
| 4656 | |
| 4657 | S_SET_NUMBER_AUXILIARY (sym, 1); |
| 4658 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); |
| 4659 | |
| 4660 | symbol_get_tc (sym)->output = 1; |
| 4661 | |
| 4662 | SF_SET_PROCESS (sym); |
| 4663 | |
| 4664 | ppc_frob_label (sym); |
| 4665 | |
| 4666 | demand_empty_rest_of_line (); |
| 4667 | } |
| 4668 | |
| 4669 | /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a |
| 4670 | line number. */ |
| 4671 | |
| 4672 | static void |
| 4673 | ppc_eb (int ignore ATTRIBUTE_UNUSED) |
| 4674 | { |
| 4675 | symbolS *sym; |
| 4676 | |
| 4677 | sym = symbol_make (".eb"); |
| 4678 | S_SET_SEGMENT (sym, text_section); |
| 4679 | symbol_set_frag (sym, frag_now); |
| 4680 | S_SET_VALUE (sym, frag_now_fix ()); |
| 4681 | S_SET_STORAGE_CLASS (sym, C_BLOCK); |
| 4682 | S_SET_NUMBER_AUXILIARY (sym, 1); |
| 4683 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); |
| 4684 | symbol_get_tc (sym)->output = 1; |
| 4685 | |
| 4686 | SF_SET_PROCESS (sym); |
| 4687 | |
| 4688 | ppc_frob_label (sym); |
| 4689 | |
| 4690 | demand_empty_rest_of_line (); |
| 4691 | } |
| 4692 | |
| 4693 | /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a |
| 4694 | specified name. */ |
| 4695 | |
| 4696 | static void |
| 4697 | ppc_bc (int ignore ATTRIBUTE_UNUSED) |
| 4698 | { |
| 4699 | char *name; |
| 4700 | int len; |
| 4701 | symbolS *sym; |
| 4702 | |
| 4703 | name = demand_copy_C_string (&len); |
| 4704 | sym = symbol_make (name); |
| 4705 | S_SET_SEGMENT (sym, ppc_coff_debug_section); |
| 4706 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
| 4707 | S_SET_STORAGE_CLASS (sym, C_BCOMM); |
| 4708 | S_SET_VALUE (sym, 0); |
| 4709 | symbol_get_tc (sym)->output = 1; |
| 4710 | |
| 4711 | ppc_frob_label (sym); |
| 4712 | |
| 4713 | demand_empty_rest_of_line (); |
| 4714 | } |
| 4715 | |
| 4716 | /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */ |
| 4717 | |
| 4718 | static void |
| 4719 | ppc_ec (int ignore ATTRIBUTE_UNUSED) |
| 4720 | { |
| 4721 | symbolS *sym; |
| 4722 | |
| 4723 | sym = symbol_make (".ec"); |
| 4724 | S_SET_SEGMENT (sym, ppc_coff_debug_section); |
| 4725 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
| 4726 | S_SET_STORAGE_CLASS (sym, C_ECOMM); |
| 4727 | S_SET_VALUE (sym, 0); |
| 4728 | symbol_get_tc (sym)->output = 1; |
| 4729 | |
| 4730 | ppc_frob_label (sym); |
| 4731 | |
| 4732 | demand_empty_rest_of_line (); |
| 4733 | } |
| 4734 | |
| 4735 | /* The .toc pseudo-op. Switch to the .toc subsegment. */ |
| 4736 | |
| 4737 | static void |
| 4738 | ppc_toc (int ignore ATTRIBUTE_UNUSED) |
| 4739 | { |
| 4740 | if (ppc_toc_csect != (symbolS *) NULL) |
| 4741 | subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg); |
| 4742 | else |
| 4743 | { |
| 4744 | subsegT subseg; |
| 4745 | symbolS *sym; |
| 4746 | symbolS *list; |
| 4747 | |
| 4748 | subseg = ppc_data_subsegment; |
| 4749 | ++ppc_data_subsegment; |
| 4750 | |
| 4751 | subseg_new (segment_name (data_section), subseg); |
| 4752 | ppc_toc_frag = frag_now; |
| 4753 | |
| 4754 | sym = symbol_find_or_make ("TOC[TC0]"); |
| 4755 | symbol_set_frag (sym, frag_now); |
| 4756 | S_SET_SEGMENT (sym, data_section); |
| 4757 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); |
| 4758 | symbol_get_tc (sym)->subseg = subseg; |
| 4759 | symbol_get_tc (sym)->output = 1; |
| 4760 | symbol_get_tc (sym)->within = sym; |
| 4761 | |
| 4762 | ppc_toc_csect = sym; |
| 4763 | |
| 4764 | for (list = ppc_data_csects; |
| 4765 | symbol_get_tc (list)->next != (symbolS *) NULL; |
| 4766 | list = symbol_get_tc (list)->next) |
| 4767 | ; |
| 4768 | symbol_get_tc (list)->next = sym; |
| 4769 | |
| 4770 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); |
| 4771 | symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP, |
| 4772 | &symbol_lastP); |
| 4773 | } |
| 4774 | |
| 4775 | ppc_current_csect = ppc_toc_csect; |
| 4776 | |
| 4777 | demand_empty_rest_of_line (); |
| 4778 | } |
| 4779 | |
| 4780 | /* The AIX assembler automatically aligns the operands of a .long or |
| 4781 | .short pseudo-op, and we want to be compatible. */ |
| 4782 | |
| 4783 | static void |
| 4784 | ppc_xcoff_cons (int log_size) |
| 4785 | { |
| 4786 | frag_align (log_size, 0, 0); |
| 4787 | record_alignment (now_seg, log_size); |
| 4788 | cons (1 << log_size); |
| 4789 | } |
| 4790 | |
| 4791 | static void |
| 4792 | ppc_vbyte (int dummy ATTRIBUTE_UNUSED) |
| 4793 | { |
| 4794 | expressionS exp; |
| 4795 | int byte_count; |
| 4796 | |
| 4797 | (void) expression (&exp); |
| 4798 | |
| 4799 | if (exp.X_op != O_constant) |
| 4800 | { |
| 4801 | as_bad (_("non-constant byte count")); |
| 4802 | return; |
| 4803 | } |
| 4804 | |
| 4805 | byte_count = exp.X_add_number; |
| 4806 | |
| 4807 | if (*input_line_pointer != ',') |
| 4808 | { |
| 4809 | as_bad (_("missing value")); |
| 4810 | return; |
| 4811 | } |
| 4812 | |
| 4813 | ++input_line_pointer; |
| 4814 | cons (byte_count); |
| 4815 | } |
| 4816 | |
| 4817 | void |
| 4818 | ppc_xcoff_end (void) |
| 4819 | { |
| 4820 | int i; |
| 4821 | |
| 4822 | for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++) |
| 4823 | { |
| 4824 | struct dw_section *dws = &dw_sections[i]; |
| 4825 | struct dw_subsection *dwss; |
| 4826 | |
| 4827 | if (dws->anon_subseg) |
| 4828 | { |
| 4829 | dwss = dws->anon_subseg; |
| 4830 | dwss->link = dws->list_subseg; |
| 4831 | } |
| 4832 | else |
| 4833 | dwss = dws->list_subseg; |
| 4834 | |
| 4835 | for (; dwss != NULL; dwss = dwss->link) |
| 4836 | if (dwss->end_exp.X_add_symbol != NULL) |
| 4837 | { |
| 4838 | subseg_set (dws->sect, dwss->subseg); |
| 4839 | symbol_set_value_now (dwss->end_exp.X_add_symbol); |
| 4840 | } |
| 4841 | } |
| 4842 | } |
| 4843 | |
| 4844 | #endif /* OBJ_XCOFF */ |
| 4845 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) |
| 4846 | \f |
| 4847 | /* The .tc pseudo-op. This is used when generating either XCOFF or |
| 4848 | ELF. This takes two or more arguments. |
| 4849 | |
| 4850 | When generating XCOFF output, the first argument is the name to |
| 4851 | give to this location in the toc; this will be a symbol with class |
| 4852 | TC. The rest of the arguments are N-byte values to actually put at |
| 4853 | this location in the TOC; often there is just one more argument, a |
| 4854 | relocatable symbol reference. The size of the value to store |
| 4855 | depends on target word size. A 32-bit target uses 4-byte values, a |
| 4856 | 64-bit target uses 8-byte values. |
| 4857 | |
| 4858 | When not generating XCOFF output, the arguments are the same, but |
| 4859 | the first argument is simply ignored. */ |
| 4860 | |
| 4861 | static void |
| 4862 | ppc_tc (int ignore ATTRIBUTE_UNUSED) |
| 4863 | { |
| 4864 | #ifdef OBJ_XCOFF |
| 4865 | |
| 4866 | /* Define the TOC symbol name. */ |
| 4867 | { |
| 4868 | char *name; |
| 4869 | char endc; |
| 4870 | symbolS *sym; |
| 4871 | |
| 4872 | if (ppc_toc_csect == (symbolS *) NULL |
| 4873 | || ppc_toc_csect != ppc_current_csect) |
| 4874 | { |
| 4875 | as_bad (_(".tc not in .toc section")); |
| 4876 | ignore_rest_of_line (); |
| 4877 | return; |
| 4878 | } |
| 4879 | |
| 4880 | name = input_line_pointer; |
| 4881 | endc = get_symbol_end (); |
| 4882 | |
| 4883 | sym = symbol_find_or_make (name); |
| 4884 | |
| 4885 | *input_line_pointer = endc; |
| 4886 | |
| 4887 | if (S_IS_DEFINED (sym)) |
| 4888 | { |
| 4889 | symbolS *label; |
| 4890 | |
| 4891 | label = symbol_get_tc (ppc_current_csect)->within; |
| 4892 | if (symbol_get_tc (label)->symbol_class != XMC_TC0) |
| 4893 | { |
| 4894 | as_bad (_(".tc with no label")); |
| 4895 | ignore_rest_of_line (); |
| 4896 | return; |
| 4897 | } |
| 4898 | |
| 4899 | S_SET_SEGMENT (label, S_GET_SEGMENT (sym)); |
| 4900 | symbol_set_frag (label, symbol_get_frag (sym)); |
| 4901 | S_SET_VALUE (label, S_GET_VALUE (sym)); |
| 4902 | |
| 4903 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) |
| 4904 | ++input_line_pointer; |
| 4905 | |
| 4906 | return; |
| 4907 | } |
| 4908 | |
| 4909 | S_SET_SEGMENT (sym, now_seg); |
| 4910 | symbol_set_frag (sym, frag_now); |
| 4911 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); |
| 4912 | symbol_get_tc (sym)->symbol_class = XMC_TC; |
| 4913 | symbol_get_tc (sym)->output = 1; |
| 4914 | |
| 4915 | ppc_frob_label (sym); |
| 4916 | } |
| 4917 | |
| 4918 | #endif /* OBJ_XCOFF */ |
| 4919 | #ifdef OBJ_ELF |
| 4920 | int align; |
| 4921 | |
| 4922 | /* Skip the TOC symbol name. */ |
| 4923 | while (is_part_of_name (*input_line_pointer) |
| 4924 | || *input_line_pointer == ' ' |
| 4925 | || *input_line_pointer == '[' |
| 4926 | || *input_line_pointer == ']' |
| 4927 | || *input_line_pointer == '{' |
| 4928 | || *input_line_pointer == '}') |
| 4929 | ++input_line_pointer; |
| 4930 | |
| 4931 | /* Align to a four/eight byte boundary. */ |
| 4932 | align = ppc_obj64 ? 3 : 2; |
| 4933 | frag_align (align, 0, 0); |
| 4934 | record_alignment (now_seg, align); |
| 4935 | #endif /* OBJ_ELF */ |
| 4936 | |
| 4937 | if (*input_line_pointer != ',') |
| 4938 | demand_empty_rest_of_line (); |
| 4939 | else |
| 4940 | { |
| 4941 | ++input_line_pointer; |
| 4942 | cons (ppc_obj64 ? 8 : 4); |
| 4943 | } |
| 4944 | } |
| 4945 | |
| 4946 | /* Pseudo-op .machine. */ |
| 4947 | |
| 4948 | static void |
| 4949 | ppc_machine (int ignore ATTRIBUTE_UNUSED) |
| 4950 | { |
| 4951 | char *cpu_string; |
| 4952 | #define MAX_HISTORY 100 |
| 4953 | static ppc_cpu_t *cpu_history; |
| 4954 | static int curr_hist; |
| 4955 | |
| 4956 | SKIP_WHITESPACE (); |
| 4957 | |
| 4958 | if (*input_line_pointer == '"') |
| 4959 | { |
| 4960 | int len; |
| 4961 | cpu_string = demand_copy_C_string (&len); |
| 4962 | } |
| 4963 | else |
| 4964 | { |
| 4965 | char c; |
| 4966 | cpu_string = input_line_pointer; |
| 4967 | c = get_symbol_end (); |
| 4968 | cpu_string = xstrdup (cpu_string); |
| 4969 | *input_line_pointer = c; |
| 4970 | } |
| 4971 | |
| 4972 | if (cpu_string != NULL) |
| 4973 | { |
| 4974 | ppc_cpu_t old_cpu = ppc_cpu; |
| 4975 | ppc_cpu_t new_cpu; |
| 4976 | char *p; |
| 4977 | |
| 4978 | for (p = cpu_string; *p != 0; p++) |
| 4979 | *p = TOLOWER (*p); |
| 4980 | |
| 4981 | if (strcmp (cpu_string, "push") == 0) |
| 4982 | { |
| 4983 | if (cpu_history == NULL) |
| 4984 | cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history)); |
| 4985 | |
| 4986 | if (curr_hist >= MAX_HISTORY) |
| 4987 | as_bad (_(".machine stack overflow")); |
| 4988 | else |
| 4989 | cpu_history[curr_hist++] = ppc_cpu; |
| 4990 | } |
| 4991 | else if (strcmp (cpu_string, "pop") == 0) |
| 4992 | { |
| 4993 | if (curr_hist <= 0) |
| 4994 | as_bad (_(".machine stack underflow")); |
| 4995 | else |
| 4996 | ppc_cpu = cpu_history[--curr_hist]; |
| 4997 | } |
| 4998 | else if ((new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, cpu_string)) != 0) |
| 4999 | ppc_cpu = new_cpu; |
| 5000 | else |
| 5001 | as_bad (_("invalid machine `%s'"), cpu_string); |
| 5002 | |
| 5003 | if (ppc_cpu != old_cpu) |
| 5004 | ppc_setup_opcodes (); |
| 5005 | } |
| 5006 | |
| 5007 | demand_empty_rest_of_line (); |
| 5008 | } |
| 5009 | #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */ |
| 5010 | \f |
| 5011 | #ifdef TE_PE |
| 5012 | |
| 5013 | /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */ |
| 5014 | |
| 5015 | /* Set the current section. */ |
| 5016 | static void |
| 5017 | ppc_set_current_section (segT new) |
| 5018 | { |
| 5019 | ppc_previous_section = ppc_current_section; |
| 5020 | ppc_current_section = new; |
| 5021 | } |
| 5022 | |
| 5023 | /* pseudo-op: .previous |
| 5024 | behaviour: toggles the current section with the previous section. |
| 5025 | errors: None |
| 5026 | warnings: "No previous section" */ |
| 5027 | |
| 5028 | static void |
| 5029 | ppc_previous (int ignore ATTRIBUTE_UNUSED) |
| 5030 | { |
| 5031 | if (ppc_previous_section == NULL) |
| 5032 | { |
| 5033 | as_warn (_("no previous section to return to, ignored.")); |
| 5034 | return; |
| 5035 | } |
| 5036 | |
| 5037 | subseg_set (ppc_previous_section, 0); |
| 5038 | |
| 5039 | ppc_set_current_section (ppc_previous_section); |
| 5040 | } |
| 5041 | |
| 5042 | /* pseudo-op: .pdata |
| 5043 | behaviour: predefined read only data section |
| 5044 | double word aligned |
| 5045 | errors: None |
| 5046 | warnings: None |
| 5047 | initial: .section .pdata "adr3" |
| 5048 | a - don't know -- maybe a misprint |
| 5049 | d - initialized data |
| 5050 | r - readable |
| 5051 | 3 - double word aligned (that would be 4 byte boundary) |
| 5052 | |
| 5053 | commentary: |
| 5054 | Tag index tables (also known as the function table) for exception |
| 5055 | handling, debugging, etc. */ |
| 5056 | |
| 5057 | static void |
| 5058 | ppc_pdata (int ignore ATTRIBUTE_UNUSED) |
| 5059 | { |
| 5060 | if (pdata_section == 0) |
| 5061 | { |
| 5062 | pdata_section = subseg_new (".pdata", 0); |
| 5063 | |
| 5064 | bfd_set_section_flags (stdoutput, pdata_section, |
| 5065 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
| 5066 | | SEC_READONLY | SEC_DATA )); |
| 5067 | |
| 5068 | bfd_set_section_alignment (stdoutput, pdata_section, 2); |
| 5069 | } |
| 5070 | else |
| 5071 | { |
| 5072 | pdata_section = subseg_new (".pdata", 0); |
| 5073 | } |
| 5074 | ppc_set_current_section (pdata_section); |
| 5075 | } |
| 5076 | |
| 5077 | /* pseudo-op: .ydata |
| 5078 | behaviour: predefined read only data section |
| 5079 | double word aligned |
| 5080 | errors: None |
| 5081 | warnings: None |
| 5082 | initial: .section .ydata "drw3" |
| 5083 | a - don't know -- maybe a misprint |
| 5084 | d - initialized data |
| 5085 | r - readable |
| 5086 | 3 - double word aligned (that would be 4 byte boundary) |
| 5087 | commentary: |
| 5088 | Tag tables (also known as the scope table) for exception handling, |
| 5089 | debugging, etc. */ |
| 5090 | |
| 5091 | static void |
| 5092 | ppc_ydata (int ignore ATTRIBUTE_UNUSED) |
| 5093 | { |
| 5094 | if (ydata_section == 0) |
| 5095 | { |
| 5096 | ydata_section = subseg_new (".ydata", 0); |
| 5097 | bfd_set_section_flags (stdoutput, ydata_section, |
| 5098 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
| 5099 | | SEC_READONLY | SEC_DATA )); |
| 5100 | |
| 5101 | bfd_set_section_alignment (stdoutput, ydata_section, 3); |
| 5102 | } |
| 5103 | else |
| 5104 | { |
| 5105 | ydata_section = subseg_new (".ydata", 0); |
| 5106 | } |
| 5107 | ppc_set_current_section (ydata_section); |
| 5108 | } |
| 5109 | |
| 5110 | /* pseudo-op: .reldata |
| 5111 | behaviour: predefined read write data section |
| 5112 | double word aligned (4-byte) |
| 5113 | FIXME: relocation is applied to it |
| 5114 | FIXME: what's the difference between this and .data? |
| 5115 | errors: None |
| 5116 | warnings: None |
| 5117 | initial: .section .reldata "drw3" |
| 5118 | d - initialized data |
| 5119 | r - readable |
| 5120 | w - writeable |
| 5121 | 3 - double word aligned (that would be 8 byte boundary) |
| 5122 | |
| 5123 | commentary: |
| 5124 | Like .data, but intended to hold data subject to relocation, such as |
| 5125 | function descriptors, etc. */ |
| 5126 | |
| 5127 | static void |
| 5128 | ppc_reldata (int ignore ATTRIBUTE_UNUSED) |
| 5129 | { |
| 5130 | if (reldata_section == 0) |
| 5131 | { |
| 5132 | reldata_section = subseg_new (".reldata", 0); |
| 5133 | |
| 5134 | bfd_set_section_flags (stdoutput, reldata_section, |
| 5135 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
| 5136 | | SEC_DATA)); |
| 5137 | |
| 5138 | bfd_set_section_alignment (stdoutput, reldata_section, 2); |
| 5139 | } |
| 5140 | else |
| 5141 | { |
| 5142 | reldata_section = subseg_new (".reldata", 0); |
| 5143 | } |
| 5144 | ppc_set_current_section (reldata_section); |
| 5145 | } |
| 5146 | |
| 5147 | /* pseudo-op: .rdata |
| 5148 | behaviour: predefined read only data section |
| 5149 | double word aligned |
| 5150 | errors: None |
| 5151 | warnings: None |
| 5152 | initial: .section .rdata "dr3" |
| 5153 | d - initialized data |
| 5154 | r - readable |
| 5155 | 3 - double word aligned (that would be 4 byte boundary) */ |
| 5156 | |
| 5157 | static void |
| 5158 | ppc_rdata (int ignore ATTRIBUTE_UNUSED) |
| 5159 | { |
| 5160 | if (rdata_section == 0) |
| 5161 | { |
| 5162 | rdata_section = subseg_new (".rdata", 0); |
| 5163 | bfd_set_section_flags (stdoutput, rdata_section, |
| 5164 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
| 5165 | | SEC_READONLY | SEC_DATA )); |
| 5166 | |
| 5167 | bfd_set_section_alignment (stdoutput, rdata_section, 2); |
| 5168 | } |
| 5169 | else |
| 5170 | { |
| 5171 | rdata_section = subseg_new (".rdata", 0); |
| 5172 | } |
| 5173 | ppc_set_current_section (rdata_section); |
| 5174 | } |
| 5175 | |
| 5176 | /* pseudo-op: .ualong |
| 5177 | behaviour: much like .int, with the exception that no alignment is |
| 5178 | performed. |
| 5179 | FIXME: test the alignment statement |
| 5180 | errors: None |
| 5181 | warnings: None */ |
| 5182 | |
| 5183 | static void |
| 5184 | ppc_ualong (int ignore ATTRIBUTE_UNUSED) |
| 5185 | { |
| 5186 | /* Try for long. */ |
| 5187 | cons (4); |
| 5188 | } |
| 5189 | |
| 5190 | /* pseudo-op: .znop <symbol name> |
| 5191 | behaviour: Issue a nop instruction |
| 5192 | Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using |
| 5193 | the supplied symbol name. |
| 5194 | errors: None |
| 5195 | warnings: Missing symbol name */ |
| 5196 | |
| 5197 | static void |
| 5198 | ppc_znop (int ignore ATTRIBUTE_UNUSED) |
| 5199 | { |
| 5200 | unsigned long insn; |
| 5201 | const struct powerpc_opcode *opcode; |
| 5202 | char *f; |
| 5203 | symbolS *sym; |
| 5204 | char *symbol_name; |
| 5205 | char c; |
| 5206 | char *name; |
| 5207 | |
| 5208 | /* Strip out the symbol name. */ |
| 5209 | symbol_name = input_line_pointer; |
| 5210 | c = get_symbol_end (); |
| 5211 | |
| 5212 | name = xmalloc (input_line_pointer - symbol_name + 1); |
| 5213 | strcpy (name, symbol_name); |
| 5214 | |
| 5215 | sym = symbol_find_or_make (name); |
| 5216 | |
| 5217 | *input_line_pointer = c; |
| 5218 | |
| 5219 | SKIP_WHITESPACE (); |
| 5220 | |
| 5221 | /* Look up the opcode in the hash table. */ |
| 5222 | opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop"); |
| 5223 | |
| 5224 | /* Stick in the nop. */ |
| 5225 | insn = opcode->opcode; |
| 5226 | |
| 5227 | /* Write out the instruction. */ |
| 5228 | f = frag_more (4); |
| 5229 | md_number_to_chars (f, insn, 4); |
| 5230 | fix_new (frag_now, |
| 5231 | f - frag_now->fr_literal, |
| 5232 | 4, |
| 5233 | sym, |
| 5234 | 0, |
| 5235 | 0, |
| 5236 | BFD_RELOC_16_GOT_PCREL); |
| 5237 | |
| 5238 | } |
| 5239 | |
| 5240 | /* pseudo-op: |
| 5241 | behaviour: |
| 5242 | errors: |
| 5243 | warnings: */ |
| 5244 | |
| 5245 | static void |
| 5246 | ppc_pe_comm (int lcomm) |
| 5247 | { |
| 5248 | char *name; |
| 5249 | char c; |
| 5250 | char *p; |
| 5251 | offsetT temp; |
| 5252 | symbolS *symbolP; |
| 5253 | offsetT align; |
| 5254 | |
| 5255 | name = input_line_pointer; |
| 5256 | c = get_symbol_end (); |
| 5257 | |
| 5258 | /* just after name is now '\0'. */ |
| 5259 | p = input_line_pointer; |
| 5260 | *p = c; |
| 5261 | SKIP_WHITESPACE (); |
| 5262 | if (*input_line_pointer != ',') |
| 5263 | { |
| 5264 | as_bad (_("expected comma after symbol-name: rest of line ignored.")); |
| 5265 | ignore_rest_of_line (); |
| 5266 | return; |
| 5267 | } |
| 5268 | |
| 5269 | input_line_pointer++; /* skip ',' */ |
| 5270 | if ((temp = get_absolute_expression ()) < 0) |
| 5271 | { |
| 5272 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp); |
| 5273 | ignore_rest_of_line (); |
| 5274 | return; |
| 5275 | } |
| 5276 | |
| 5277 | if (! lcomm) |
| 5278 | { |
| 5279 | /* The third argument to .comm is the alignment. */ |
| 5280 | if (*input_line_pointer != ',') |
| 5281 | align = 3; |
| 5282 | else |
| 5283 | { |
| 5284 | ++input_line_pointer; |
| 5285 | align = get_absolute_expression (); |
| 5286 | if (align <= 0) |
| 5287 | { |
| 5288 | as_warn (_("ignoring bad alignment")); |
| 5289 | align = 3; |
| 5290 | } |
| 5291 | } |
| 5292 | } |
| 5293 | |
| 5294 | *p = 0; |
| 5295 | symbolP = symbol_find_or_make (name); |
| 5296 | |
| 5297 | *p = c; |
| 5298 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) |
| 5299 | { |
| 5300 | as_bad (_("ignoring attempt to re-define symbol `%s'."), |
| 5301 | S_GET_NAME (symbolP)); |
| 5302 | ignore_rest_of_line (); |
| 5303 | return; |
| 5304 | } |
| 5305 | |
| 5306 | if (S_GET_VALUE (symbolP)) |
| 5307 | { |
| 5308 | if (S_GET_VALUE (symbolP) != (valueT) temp) |
| 5309 | as_bad (_("length of .comm \"%s\" is already %ld. Not changed to %ld."), |
| 5310 | S_GET_NAME (symbolP), |
| 5311 | (long) S_GET_VALUE (symbolP), |
| 5312 | (long) temp); |
| 5313 | } |
| 5314 | else |
| 5315 | { |
| 5316 | S_SET_VALUE (symbolP, (valueT) temp); |
| 5317 | S_SET_EXTERNAL (symbolP); |
| 5318 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
| 5319 | } |
| 5320 | |
| 5321 | demand_empty_rest_of_line (); |
| 5322 | } |
| 5323 | |
| 5324 | /* |
| 5325 | * implement the .section pseudo op: |
| 5326 | * .section name {, "flags"} |
| 5327 | * ^ ^ |
| 5328 | * | +--- optional flags: 'b' for bss |
| 5329 | * | 'i' for info |
| 5330 | * +-- section name 'l' for lib |
| 5331 | * 'n' for noload |
| 5332 | * 'o' for over |
| 5333 | * 'w' for data |
| 5334 | * 'd' (apparently m88k for data) |
| 5335 | * 'x' for text |
| 5336 | * But if the argument is not a quoted string, treat it as a |
| 5337 | * subsegment number. |
| 5338 | * |
| 5339 | * FIXME: this is a copy of the section processing from obj-coff.c, with |
| 5340 | * additions/changes for the moto-pas assembler support. There are three |
| 5341 | * categories: |
| 5342 | * |
| 5343 | * FIXME: I just noticed this. This doesn't work at all really. It it |
| 5344 | * setting bits that bfd probably neither understands or uses. The |
| 5345 | * correct approach (?) will have to incorporate extra fields attached |
| 5346 | * to the section to hold the system specific stuff. (krk) |
| 5347 | * |
| 5348 | * Section Contents: |
| 5349 | * 'a' - unknown - referred to in documentation, but no definition supplied |
| 5350 | * 'c' - section has code |
| 5351 | * 'd' - section has initialized data |
| 5352 | * 'u' - section has uninitialized data |
| 5353 | * 'i' - section contains directives (info) |
| 5354 | * 'n' - section can be discarded |
| 5355 | * 'R' - remove section at link time |
| 5356 | * |
| 5357 | * Section Protection: |
| 5358 | * 'r' - section is readable |
| 5359 | * 'w' - section is writeable |
| 5360 | * 'x' - section is executable |
| 5361 | * 's' - section is sharable |
| 5362 | * |
| 5363 | * Section Alignment: |
| 5364 | * '0' - align to byte boundary |
| 5365 | * '1' - align to halfword undary |
| 5366 | * '2' - align to word boundary |
| 5367 | * '3' - align to doubleword boundary |
| 5368 | * '4' - align to quadword boundary |
| 5369 | * '5' - align to 32 byte boundary |
| 5370 | * '6' - align to 64 byte boundary |
| 5371 | * |
| 5372 | */ |
| 5373 | |
| 5374 | void |
| 5375 | ppc_pe_section (int ignore ATTRIBUTE_UNUSED) |
| 5376 | { |
| 5377 | /* Strip out the section name. */ |
| 5378 | char *section_name; |
| 5379 | char c; |
| 5380 | char *name; |
| 5381 | unsigned int exp; |
| 5382 | flagword flags; |
| 5383 | segT sec; |
| 5384 | int align; |
| 5385 | |
| 5386 | section_name = input_line_pointer; |
| 5387 | c = get_symbol_end (); |
| 5388 | |
| 5389 | name = xmalloc (input_line_pointer - section_name + 1); |
| 5390 | strcpy (name, section_name); |
| 5391 | |
| 5392 | *input_line_pointer = c; |
| 5393 | |
| 5394 | SKIP_WHITESPACE (); |
| 5395 | |
| 5396 | exp = 0; |
| 5397 | flags = SEC_NO_FLAGS; |
| 5398 | |
| 5399 | if (strcmp (name, ".idata$2") == 0) |
| 5400 | { |
| 5401 | align = 0; |
| 5402 | } |
| 5403 | else if (strcmp (name, ".idata$3") == 0) |
| 5404 | { |
| 5405 | align = 0; |
| 5406 | } |
| 5407 | else if (strcmp (name, ".idata$4") == 0) |
| 5408 | { |
| 5409 | align = 2; |
| 5410 | } |
| 5411 | else if (strcmp (name, ".idata$5") == 0) |
| 5412 | { |
| 5413 | align = 2; |
| 5414 | } |
| 5415 | else if (strcmp (name, ".idata$6") == 0) |
| 5416 | { |
| 5417 | align = 1; |
| 5418 | } |
| 5419 | else |
| 5420 | /* Default alignment to 16 byte boundary. */ |
| 5421 | align = 4; |
| 5422 | |
| 5423 | if (*input_line_pointer == ',') |
| 5424 | { |
| 5425 | ++input_line_pointer; |
| 5426 | SKIP_WHITESPACE (); |
| 5427 | if (*input_line_pointer != '"') |
| 5428 | exp = get_absolute_expression (); |
| 5429 | else |
| 5430 | { |
| 5431 | ++input_line_pointer; |
| 5432 | while (*input_line_pointer != '"' |
| 5433 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) |
| 5434 | { |
| 5435 | switch (*input_line_pointer) |
| 5436 | { |
| 5437 | /* Section Contents */ |
| 5438 | case 'a': /* unknown */ |
| 5439 | as_bad (_("unsupported section attribute -- 'a'")); |
| 5440 | break; |
| 5441 | case 'c': /* code section */ |
| 5442 | flags |= SEC_CODE; |
| 5443 | break; |
| 5444 | case 'd': /* section has initialized data */ |
| 5445 | flags |= SEC_DATA; |
| 5446 | break; |
| 5447 | case 'u': /* section has uninitialized data */ |
| 5448 | /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA |
| 5449 | in winnt.h */ |
| 5450 | flags |= SEC_ROM; |
| 5451 | break; |
| 5452 | case 'i': /* section contains directives (info) */ |
| 5453 | /* FIXME: This is IMAGE_SCN_LNK_INFO |
| 5454 | in winnt.h */ |
| 5455 | flags |= SEC_HAS_CONTENTS; |
| 5456 | break; |
| 5457 | case 'n': /* section can be discarded */ |
| 5458 | flags &=~ SEC_LOAD; |
| 5459 | break; |
| 5460 | case 'R': /* Remove section at link time */ |
| 5461 | flags |= SEC_NEVER_LOAD; |
| 5462 | break; |
| 5463 | #if IFLICT_BRAIN_DAMAGE |
| 5464 | /* Section Protection */ |
| 5465 | case 'r': /* section is readable */ |
| 5466 | flags |= IMAGE_SCN_MEM_READ; |
| 5467 | break; |
| 5468 | case 'w': /* section is writeable */ |
| 5469 | flags |= IMAGE_SCN_MEM_WRITE; |
| 5470 | break; |
| 5471 | case 'x': /* section is executable */ |
| 5472 | flags |= IMAGE_SCN_MEM_EXECUTE; |
| 5473 | break; |
| 5474 | case 's': /* section is sharable */ |
| 5475 | flags |= IMAGE_SCN_MEM_SHARED; |
| 5476 | break; |
| 5477 | |
| 5478 | /* Section Alignment */ |
| 5479 | case '0': /* align to byte boundary */ |
| 5480 | flags |= IMAGE_SCN_ALIGN_1BYTES; |
| 5481 | align = 0; |
| 5482 | break; |
| 5483 | case '1': /* align to halfword boundary */ |
| 5484 | flags |= IMAGE_SCN_ALIGN_2BYTES; |
| 5485 | align = 1; |
| 5486 | break; |
| 5487 | case '2': /* align to word boundary */ |
| 5488 | flags |= IMAGE_SCN_ALIGN_4BYTES; |
| 5489 | align = 2; |
| 5490 | break; |
| 5491 | case '3': /* align to doubleword boundary */ |
| 5492 | flags |= IMAGE_SCN_ALIGN_8BYTES; |
| 5493 | align = 3; |
| 5494 | break; |
| 5495 | case '4': /* align to quadword boundary */ |
| 5496 | flags |= IMAGE_SCN_ALIGN_16BYTES; |
| 5497 | align = 4; |
| 5498 | break; |
| 5499 | case '5': /* align to 32 byte boundary */ |
| 5500 | flags |= IMAGE_SCN_ALIGN_32BYTES; |
| 5501 | align = 5; |
| 5502 | break; |
| 5503 | case '6': /* align to 64 byte boundary */ |
| 5504 | flags |= IMAGE_SCN_ALIGN_64BYTES; |
| 5505 | align = 6; |
| 5506 | break; |
| 5507 | #endif |
| 5508 | default: |
| 5509 | as_bad (_("unknown section attribute '%c'"), |
| 5510 | *input_line_pointer); |
| 5511 | break; |
| 5512 | } |
| 5513 | ++input_line_pointer; |
| 5514 | } |
| 5515 | if (*input_line_pointer == '"') |
| 5516 | ++input_line_pointer; |
| 5517 | } |
| 5518 | } |
| 5519 | |
| 5520 | sec = subseg_new (name, (subsegT) exp); |
| 5521 | |
| 5522 | ppc_set_current_section (sec); |
| 5523 | |
| 5524 | if (flags != SEC_NO_FLAGS) |
| 5525 | { |
| 5526 | if (! bfd_set_section_flags (stdoutput, sec, flags)) |
| 5527 | as_bad (_("error setting flags for \"%s\": %s"), |
| 5528 | bfd_section_name (stdoutput, sec), |
| 5529 | bfd_errmsg (bfd_get_error ())); |
| 5530 | } |
| 5531 | |
| 5532 | bfd_set_section_alignment (stdoutput, sec, align); |
| 5533 | } |
| 5534 | |
| 5535 | static void |
| 5536 | ppc_pe_function (int ignore ATTRIBUTE_UNUSED) |
| 5537 | { |
| 5538 | char *name; |
| 5539 | char endc; |
| 5540 | symbolS *ext_sym; |
| 5541 | |
| 5542 | name = input_line_pointer; |
| 5543 | endc = get_symbol_end (); |
| 5544 | |
| 5545 | ext_sym = symbol_find_or_make (name); |
| 5546 | |
| 5547 | *input_line_pointer = endc; |
| 5548 | |
| 5549 | S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); |
| 5550 | SF_SET_FUNCTION (ext_sym); |
| 5551 | SF_SET_PROCESS (ext_sym); |
| 5552 | coff_add_linesym (ext_sym); |
| 5553 | |
| 5554 | demand_empty_rest_of_line (); |
| 5555 | } |
| 5556 | |
| 5557 | static void |
| 5558 | ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED) |
| 5559 | { |
| 5560 | if (tocdata_section == 0) |
| 5561 | { |
| 5562 | tocdata_section = subseg_new (".tocd", 0); |
| 5563 | /* FIXME: section flags won't work. */ |
| 5564 | bfd_set_section_flags (stdoutput, tocdata_section, |
| 5565 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
| 5566 | | SEC_READONLY | SEC_DATA)); |
| 5567 | |
| 5568 | bfd_set_section_alignment (stdoutput, tocdata_section, 2); |
| 5569 | } |
| 5570 | else |
| 5571 | { |
| 5572 | rdata_section = subseg_new (".tocd", 0); |
| 5573 | } |
| 5574 | |
| 5575 | ppc_set_current_section (tocdata_section); |
| 5576 | |
| 5577 | demand_empty_rest_of_line (); |
| 5578 | } |
| 5579 | |
| 5580 | /* Don't adjust TOC relocs to use the section symbol. */ |
| 5581 | |
| 5582 | int |
| 5583 | ppc_pe_fix_adjustable (fixS *fix) |
| 5584 | { |
| 5585 | return fix->fx_r_type != BFD_RELOC_PPC_TOC16; |
| 5586 | } |
| 5587 | |
| 5588 | #endif |
| 5589 | \f |
| 5590 | #ifdef OBJ_XCOFF |
| 5591 | |
| 5592 | /* XCOFF specific symbol and file handling. */ |
| 5593 | |
| 5594 | /* Canonicalize the symbol name. We use the to force the suffix, if |
| 5595 | any, to use square brackets, and to be in upper case. */ |
| 5596 | |
| 5597 | char * |
| 5598 | ppc_canonicalize_symbol_name (char *name) |
| 5599 | { |
| 5600 | char *s; |
| 5601 | |
| 5602 | if (ppc_stab_symbol) |
| 5603 | return name; |
| 5604 | |
| 5605 | for (s = name; *s != '\0' && *s != '{' && *s != '['; s++) |
| 5606 | ; |
| 5607 | if (*s != '\0') |
| 5608 | { |
| 5609 | char brac; |
| 5610 | |
| 5611 | if (*s == '[') |
| 5612 | brac = ']'; |
| 5613 | else |
| 5614 | { |
| 5615 | *s = '['; |
| 5616 | brac = '}'; |
| 5617 | } |
| 5618 | |
| 5619 | for (s++; *s != '\0' && *s != brac; s++) |
| 5620 | *s = TOUPPER (*s); |
| 5621 | |
| 5622 | if (*s == '\0' || s[1] != '\0') |
| 5623 | as_bad (_("bad symbol suffix")); |
| 5624 | |
| 5625 | *s = ']'; |
| 5626 | } |
| 5627 | |
| 5628 | return name; |
| 5629 | } |
| 5630 | |
| 5631 | /* Set the class of a symbol based on the suffix, if any. This is |
| 5632 | called whenever a new symbol is created. */ |
| 5633 | |
| 5634 | void |
| 5635 | ppc_symbol_new_hook (symbolS *sym) |
| 5636 | { |
| 5637 | struct ppc_tc_sy *tc; |
| 5638 | const char *s; |
| 5639 | |
| 5640 | tc = symbol_get_tc (sym); |
| 5641 | tc->next = NULL; |
| 5642 | tc->output = 0; |
| 5643 | tc->symbol_class = -1; |
| 5644 | tc->real_name = NULL; |
| 5645 | tc->subseg = 0; |
| 5646 | tc->align = 0; |
| 5647 | tc->u.size = NULL; |
| 5648 | tc->u.dw = NULL; |
| 5649 | tc->within = NULL; |
| 5650 | |
| 5651 | if (ppc_stab_symbol) |
| 5652 | return; |
| 5653 | |
| 5654 | s = strchr (S_GET_NAME (sym), '['); |
| 5655 | if (s == (const char *) NULL) |
| 5656 | { |
| 5657 | /* There is no suffix. */ |
| 5658 | return; |
| 5659 | } |
| 5660 | |
| 5661 | ++s; |
| 5662 | |
| 5663 | switch (s[0]) |
| 5664 | { |
| 5665 | case 'B': |
| 5666 | if (strcmp (s, "BS]") == 0) |
| 5667 | tc->symbol_class = XMC_BS; |
| 5668 | break; |
| 5669 | case 'D': |
| 5670 | if (strcmp (s, "DB]") == 0) |
| 5671 | tc->symbol_class = XMC_DB; |
| 5672 | else if (strcmp (s, "DS]") == 0) |
| 5673 | tc->symbol_class = XMC_DS; |
| 5674 | break; |
| 5675 | case 'G': |
| 5676 | if (strcmp (s, "GL]") == 0) |
| 5677 | tc->symbol_class = XMC_GL; |
| 5678 | break; |
| 5679 | case 'P': |
| 5680 | if (strcmp (s, "PR]") == 0) |
| 5681 | tc->symbol_class = XMC_PR; |
| 5682 | break; |
| 5683 | case 'R': |
| 5684 | if (strcmp (s, "RO]") == 0) |
| 5685 | tc->symbol_class = XMC_RO; |
| 5686 | else if (strcmp (s, "RW]") == 0) |
| 5687 | tc->symbol_class = XMC_RW; |
| 5688 | break; |
| 5689 | case 'S': |
| 5690 | if (strcmp (s, "SV]") == 0) |
| 5691 | tc->symbol_class = XMC_SV; |
| 5692 | break; |
| 5693 | case 'T': |
| 5694 | if (strcmp (s, "TC]") == 0) |
| 5695 | tc->symbol_class = XMC_TC; |
| 5696 | else if (strcmp (s, "TI]") == 0) |
| 5697 | tc->symbol_class = XMC_TI; |
| 5698 | else if (strcmp (s, "TB]") == 0) |
| 5699 | tc->symbol_class = XMC_TB; |
| 5700 | else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0) |
| 5701 | tc->symbol_class = XMC_TC0; |
| 5702 | break; |
| 5703 | case 'U': |
| 5704 | if (strcmp (s, "UA]") == 0) |
| 5705 | tc->symbol_class = XMC_UA; |
| 5706 | else if (strcmp (s, "UC]") == 0) |
| 5707 | tc->symbol_class = XMC_UC; |
| 5708 | break; |
| 5709 | case 'X': |
| 5710 | if (strcmp (s, "XO]") == 0) |
| 5711 | tc->symbol_class = XMC_XO; |
| 5712 | break; |
| 5713 | } |
| 5714 | |
| 5715 | if (tc->symbol_class == -1) |
| 5716 | as_bad (_("unrecognized symbol suffix")); |
| 5717 | } |
| 5718 | |
| 5719 | /* Set the class of a label based on where it is defined. This |
| 5720 | handles symbols without suffixes. Also, move the symbol so that it |
| 5721 | follows the csect symbol. */ |
| 5722 | |
| 5723 | void |
| 5724 | ppc_frob_label (symbolS *sym) |
| 5725 | { |
| 5726 | if (ppc_current_csect != (symbolS *) NULL) |
| 5727 | { |
| 5728 | if (symbol_get_tc (sym)->symbol_class == -1) |
| 5729 | symbol_get_tc (sym)->symbol_class = symbol_get_tc (ppc_current_csect)->symbol_class; |
| 5730 | |
| 5731 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); |
| 5732 | symbol_append (sym, symbol_get_tc (ppc_current_csect)->within, |
| 5733 | &symbol_rootP, &symbol_lastP); |
| 5734 | symbol_get_tc (ppc_current_csect)->within = sym; |
| 5735 | symbol_get_tc (sym)->within = ppc_current_csect; |
| 5736 | } |
| 5737 | |
| 5738 | #ifdef OBJ_ELF |
| 5739 | dwarf2_emit_label (sym); |
| 5740 | #endif |
| 5741 | } |
| 5742 | |
| 5743 | /* This variable is set by ppc_frob_symbol if any absolute symbols are |
| 5744 | seen. It tells ppc_adjust_symtab whether it needs to look through |
| 5745 | the symbols. */ |
| 5746 | |
| 5747 | static bfd_boolean ppc_saw_abs; |
| 5748 | |
| 5749 | /* Change the name of a symbol just before writing it out. Set the |
| 5750 | real name if the .rename pseudo-op was used. Otherwise, remove any |
| 5751 | class suffix. Return 1 if the symbol should not be included in the |
| 5752 | symbol table. */ |
| 5753 | |
| 5754 | int |
| 5755 | ppc_frob_symbol (symbolS *sym) |
| 5756 | { |
| 5757 | static symbolS *ppc_last_function; |
| 5758 | static symbolS *set_end; |
| 5759 | |
| 5760 | /* Discard symbols that should not be included in the output symbol |
| 5761 | table. */ |
| 5762 | if (! symbol_used_in_reloc_p (sym) |
| 5763 | && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0 |
| 5764 | || (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym)) |
| 5765 | && ! symbol_get_tc (sym)->output |
| 5766 | && S_GET_STORAGE_CLASS (sym) != C_FILE))) |
| 5767 | return 1; |
| 5768 | |
| 5769 | /* This one will disappear anyway. Don't make a csect sym for it. */ |
| 5770 | if (sym == abs_section_sym) |
| 5771 | return 1; |
| 5772 | |
| 5773 | if (symbol_get_tc (sym)->real_name != (char *) NULL) |
| 5774 | S_SET_NAME (sym, symbol_get_tc (sym)->real_name); |
| 5775 | else |
| 5776 | { |
| 5777 | const char *name; |
| 5778 | const char *s; |
| 5779 | |
| 5780 | name = S_GET_NAME (sym); |
| 5781 | s = strchr (name, '['); |
| 5782 | if (s != (char *) NULL) |
| 5783 | { |
| 5784 | unsigned int len; |
| 5785 | char *snew; |
| 5786 | |
| 5787 | len = s - name; |
| 5788 | snew = xmalloc (len + 1); |
| 5789 | memcpy (snew, name, len); |
| 5790 | snew[len] = '\0'; |
| 5791 | |
| 5792 | S_SET_NAME (sym, snew); |
| 5793 | } |
| 5794 | } |
| 5795 | |
| 5796 | if (set_end != (symbolS *) NULL) |
| 5797 | { |
| 5798 | SA_SET_SYM_ENDNDX (set_end, sym); |
| 5799 | set_end = NULL; |
| 5800 | } |
| 5801 | |
| 5802 | if (SF_GET_FUNCTION (sym)) |
| 5803 | { |
| 5804 | if (ppc_last_function != (symbolS *) NULL) |
| 5805 | as_bad (_("two .function pseudo-ops with no intervening .ef")); |
| 5806 | ppc_last_function = sym; |
| 5807 | if (symbol_get_tc (sym)->u.size != (symbolS *) NULL) |
| 5808 | { |
| 5809 | resolve_symbol_value (symbol_get_tc (sym)->u.size); |
| 5810 | SA_SET_SYM_FSIZE (sym, |
| 5811 | (long) S_GET_VALUE (symbol_get_tc (sym)->u.size)); |
| 5812 | } |
| 5813 | } |
| 5814 | else if (S_GET_STORAGE_CLASS (sym) == C_FCN |
| 5815 | && strcmp (S_GET_NAME (sym), ".ef") == 0) |
| 5816 | { |
| 5817 | if (ppc_last_function == (symbolS *) NULL) |
| 5818 | as_bad (_(".ef with no preceding .function")); |
| 5819 | else |
| 5820 | { |
| 5821 | set_end = ppc_last_function; |
| 5822 | ppc_last_function = NULL; |
| 5823 | |
| 5824 | /* We don't have a C_EFCN symbol, but we need to force the |
| 5825 | COFF backend to believe that it has seen one. */ |
| 5826 | coff_last_function = NULL; |
| 5827 | } |
| 5828 | } |
| 5829 | |
| 5830 | if (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym)) |
| 5831 | && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0 |
| 5832 | && S_GET_STORAGE_CLASS (sym) != C_FILE |
| 5833 | && S_GET_STORAGE_CLASS (sym) != C_FCN |
| 5834 | && S_GET_STORAGE_CLASS (sym) != C_BLOCK |
| 5835 | && S_GET_STORAGE_CLASS (sym) != C_BSTAT |
| 5836 | && S_GET_STORAGE_CLASS (sym) != C_ESTAT |
| 5837 | && S_GET_STORAGE_CLASS (sym) != C_BINCL |
| 5838 | && S_GET_STORAGE_CLASS (sym) != C_EINCL |
| 5839 | && S_GET_SEGMENT (sym) != ppc_coff_debug_section) |
| 5840 | S_SET_STORAGE_CLASS (sym, C_HIDEXT); |
| 5841 | |
| 5842 | if (S_GET_STORAGE_CLASS (sym) == C_EXT |
| 5843 | || S_GET_STORAGE_CLASS (sym) == C_AIX_WEAKEXT |
| 5844 | || S_GET_STORAGE_CLASS (sym) == C_HIDEXT) |
| 5845 | { |
| 5846 | int i; |
| 5847 | union internal_auxent *a; |
| 5848 | |
| 5849 | /* Create a csect aux. */ |
| 5850 | i = S_GET_NUMBER_AUXILIARY (sym); |
| 5851 | S_SET_NUMBER_AUXILIARY (sym, i + 1); |
| 5852 | a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent; |
| 5853 | if (symbol_get_tc (sym)->symbol_class == XMC_TC0) |
| 5854 | { |
| 5855 | /* This is the TOC table. */ |
| 5856 | know (strcmp (S_GET_NAME (sym), "TOC") == 0); |
| 5857 | a->x_csect.x_scnlen.l = 0; |
| 5858 | a->x_csect.x_smtyp = (2 << 3) | XTY_SD; |
| 5859 | } |
| 5860 | else if (symbol_get_tc (sym)->subseg != 0) |
| 5861 | { |
| 5862 | /* This is a csect symbol. x_scnlen is the size of the |
| 5863 | csect. */ |
| 5864 | if (symbol_get_tc (sym)->next == (symbolS *) NULL) |
| 5865 | a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, |
| 5866 | S_GET_SEGMENT (sym)) |
| 5867 | - S_GET_VALUE (sym)); |
| 5868 | else |
| 5869 | { |
| 5870 | resolve_symbol_value (symbol_get_tc (sym)->next); |
| 5871 | a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next) |
| 5872 | - S_GET_VALUE (sym)); |
| 5873 | } |
| 5874 | a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD; |
| 5875 | } |
| 5876 | else if (S_GET_SEGMENT (sym) == bss_section) |
| 5877 | { |
| 5878 | /* This is a common symbol. */ |
| 5879 | a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset; |
| 5880 | a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM; |
| 5881 | if (S_IS_EXTERNAL (sym)) |
| 5882 | symbol_get_tc (sym)->symbol_class = XMC_RW; |
| 5883 | else |
| 5884 | symbol_get_tc (sym)->symbol_class = XMC_BS; |
| 5885 | } |
| 5886 | else if (S_GET_SEGMENT (sym) == absolute_section) |
| 5887 | { |
| 5888 | /* This is an absolute symbol. The csect will be created by |
| 5889 | ppc_adjust_symtab. */ |
| 5890 | ppc_saw_abs = TRUE; |
| 5891 | a->x_csect.x_smtyp = XTY_LD; |
| 5892 | if (symbol_get_tc (sym)->symbol_class == -1) |
| 5893 | symbol_get_tc (sym)->symbol_class = XMC_XO; |
| 5894 | } |
| 5895 | else if (! S_IS_DEFINED (sym)) |
| 5896 | { |
| 5897 | /* This is an external symbol. */ |
| 5898 | a->x_csect.x_scnlen.l = 0; |
| 5899 | a->x_csect.x_smtyp = XTY_ER; |
| 5900 | } |
| 5901 | else if (symbol_get_tc (sym)->symbol_class == XMC_TC) |
| 5902 | { |
| 5903 | symbolS *next; |
| 5904 | |
| 5905 | /* This is a TOC definition. x_scnlen is the size of the |
| 5906 | TOC entry. */ |
| 5907 | next = symbol_next (sym); |
| 5908 | while (symbol_get_tc (next)->symbol_class == XMC_TC0) |
| 5909 | next = symbol_next (next); |
| 5910 | if (next == (symbolS *) NULL |
| 5911 | || symbol_get_tc (next)->symbol_class != XMC_TC) |
| 5912 | { |
| 5913 | if (ppc_after_toc_frag == (fragS *) NULL) |
| 5914 | a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, |
| 5915 | data_section) |
| 5916 | - S_GET_VALUE (sym)); |
| 5917 | else |
| 5918 | a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address |
| 5919 | - S_GET_VALUE (sym)); |
| 5920 | } |
| 5921 | else |
| 5922 | { |
| 5923 | resolve_symbol_value (next); |
| 5924 | a->x_csect.x_scnlen.l = (S_GET_VALUE (next) |
| 5925 | - S_GET_VALUE (sym)); |
| 5926 | } |
| 5927 | a->x_csect.x_smtyp = (2 << 3) | XTY_SD; |
| 5928 | } |
| 5929 | else |
| 5930 | { |
| 5931 | symbolS *csect; |
| 5932 | |
| 5933 | /* This is a normal symbol definition. x_scnlen is the |
| 5934 | symbol index of the containing csect. */ |
| 5935 | if (S_GET_SEGMENT (sym) == text_section) |
| 5936 | csect = ppc_text_csects; |
| 5937 | else if (S_GET_SEGMENT (sym) == data_section) |
| 5938 | csect = ppc_data_csects; |
| 5939 | else |
| 5940 | abort (); |
| 5941 | |
| 5942 | /* Skip the initial dummy symbol. */ |
| 5943 | csect = symbol_get_tc (csect)->next; |
| 5944 | |
| 5945 | if (csect == (symbolS *) NULL) |
| 5946 | { |
| 5947 | as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym)); |
| 5948 | a->x_csect.x_scnlen.l = 0; |
| 5949 | } |
| 5950 | else |
| 5951 | { |
| 5952 | while (symbol_get_tc (csect)->next != (symbolS *) NULL) |
| 5953 | { |
| 5954 | resolve_symbol_value (symbol_get_tc (csect)->next); |
| 5955 | if (S_GET_VALUE (symbol_get_tc (csect)->next) |
| 5956 | > S_GET_VALUE (sym)) |
| 5957 | break; |
| 5958 | csect = symbol_get_tc (csect)->next; |
| 5959 | } |
| 5960 | |
| 5961 | a->x_csect.x_scnlen.p = |
| 5962 | coffsymbol (symbol_get_bfdsym (csect))->native; |
| 5963 | coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen = |
| 5964 | 1; |
| 5965 | } |
| 5966 | a->x_csect.x_smtyp = XTY_LD; |
| 5967 | } |
| 5968 | |
| 5969 | a->x_csect.x_parmhash = 0; |
| 5970 | a->x_csect.x_snhash = 0; |
| 5971 | if (symbol_get_tc (sym)->symbol_class == -1) |
| 5972 | a->x_csect.x_smclas = XMC_PR; |
| 5973 | else |
| 5974 | a->x_csect.x_smclas = symbol_get_tc (sym)->symbol_class; |
| 5975 | a->x_csect.x_stab = 0; |
| 5976 | a->x_csect.x_snstab = 0; |
| 5977 | |
| 5978 | /* Don't let the COFF backend resort these symbols. */ |
| 5979 | symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END; |
| 5980 | } |
| 5981 | else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT) |
| 5982 | { |
| 5983 | /* We want the value to be the symbol index of the referenced |
| 5984 | csect symbol. BFD will do that for us if we set the right |
| 5985 | flags. */ |
| 5986 | asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within); |
| 5987 | combined_entry_type *c = coffsymbol (bsym)->native; |
| 5988 | |
| 5989 | S_SET_VALUE (sym, (valueT) (size_t) c); |
| 5990 | coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1; |
| 5991 | } |
| 5992 | else if (S_GET_STORAGE_CLASS (sym) == C_STSYM) |
| 5993 | { |
| 5994 | symbolS *block; |
| 5995 | valueT base; |
| 5996 | |
| 5997 | block = symbol_get_tc (sym)->within; |
| 5998 | if (block) |
| 5999 | { |
| 6000 | /* The value is the offset from the enclosing csect. */ |
| 6001 | symbolS *csect; |
| 6002 | |
| 6003 | csect = symbol_get_tc (block)->within; |
| 6004 | resolve_symbol_value (csect); |
| 6005 | base = S_GET_VALUE (csect); |
| 6006 | } |
| 6007 | else |
| 6008 | base = 0; |
| 6009 | |
| 6010 | S_SET_VALUE (sym, S_GET_VALUE (sym) - base); |
| 6011 | } |
| 6012 | else if (S_GET_STORAGE_CLASS (sym) == C_BINCL |
| 6013 | || S_GET_STORAGE_CLASS (sym) == C_EINCL) |
| 6014 | { |
| 6015 | /* We want the value to be a file offset into the line numbers. |
| 6016 | BFD will do that for us if we set the right flags. We have |
| 6017 | already set the value correctly. */ |
| 6018 | coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1; |
| 6019 | } |
| 6020 | |
| 6021 | return 0; |
| 6022 | } |
| 6023 | |
| 6024 | /* Adjust the symbol table. This creates csect symbols for all |
| 6025 | absolute symbols. */ |
| 6026 | |
| 6027 | void |
| 6028 | ppc_adjust_symtab (void) |
| 6029 | { |
| 6030 | symbolS *sym; |
| 6031 | |
| 6032 | if (! ppc_saw_abs) |
| 6033 | return; |
| 6034 | |
| 6035 | for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym)) |
| 6036 | { |
| 6037 | symbolS *csect; |
| 6038 | int i; |
| 6039 | union internal_auxent *a; |
| 6040 | |
| 6041 | if (S_GET_SEGMENT (sym) != absolute_section) |
| 6042 | continue; |
| 6043 | |
| 6044 | csect = symbol_create (".abs[XO]", absolute_section, |
| 6045 | S_GET_VALUE (sym), &zero_address_frag); |
| 6046 | symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym); |
| 6047 | S_SET_STORAGE_CLASS (csect, C_HIDEXT); |
| 6048 | i = S_GET_NUMBER_AUXILIARY (csect); |
| 6049 | S_SET_NUMBER_AUXILIARY (csect, i + 1); |
| 6050 | a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent; |
| 6051 | a->x_csect.x_scnlen.l = 0; |
| 6052 | a->x_csect.x_smtyp = XTY_SD; |
| 6053 | a->x_csect.x_parmhash = 0; |
| 6054 | a->x_csect.x_snhash = 0; |
| 6055 | a->x_csect.x_smclas = XMC_XO; |
| 6056 | a->x_csect.x_stab = 0; |
| 6057 | a->x_csect.x_snstab = 0; |
| 6058 | |
| 6059 | symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP); |
| 6060 | |
| 6061 | i = S_GET_NUMBER_AUXILIARY (sym); |
| 6062 | a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent; |
| 6063 | a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native; |
| 6064 | coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1; |
| 6065 | } |
| 6066 | |
| 6067 | ppc_saw_abs = FALSE; |
| 6068 | } |
| 6069 | |
| 6070 | /* Set the VMA for a section. This is called on all the sections in |
| 6071 | turn. */ |
| 6072 | |
| 6073 | void |
| 6074 | ppc_frob_section (asection *sec) |
| 6075 | { |
| 6076 | static bfd_vma vma = 0; |
| 6077 | |
| 6078 | /* Dwarf sections start at 0. */ |
| 6079 | if (bfd_get_section_flags (NULL, sec) & SEC_DEBUGGING) |
| 6080 | return; |
| 6081 | |
| 6082 | vma = md_section_align (sec, vma); |
| 6083 | bfd_set_section_vma (stdoutput, sec, vma); |
| 6084 | vma += bfd_section_size (stdoutput, sec); |
| 6085 | } |
| 6086 | |
| 6087 | #endif /* OBJ_XCOFF */ |
| 6088 | \f |
| 6089 | char * |
| 6090 | md_atof (int type, char *litp, int *sizep) |
| 6091 | { |
| 6092 | return ieee_md_atof (type, litp, sizep, target_big_endian); |
| 6093 | } |
| 6094 | |
| 6095 | /* Write a value out to the object file, using the appropriate |
| 6096 | endianness. */ |
| 6097 | |
| 6098 | void |
| 6099 | md_number_to_chars (char *buf, valueT val, int n) |
| 6100 | { |
| 6101 | if (target_big_endian) |
| 6102 | number_to_chars_bigendian (buf, val, n); |
| 6103 | else |
| 6104 | number_to_chars_littleendian (buf, val, n); |
| 6105 | } |
| 6106 | |
| 6107 | /* Align a section (I don't know why this is machine dependent). */ |
| 6108 | |
| 6109 | valueT |
| 6110 | md_section_align (asection *seg ATTRIBUTE_UNUSED, valueT addr) |
| 6111 | { |
| 6112 | #ifdef OBJ_ELF |
| 6113 | return addr; |
| 6114 | #else |
| 6115 | int align = bfd_get_section_alignment (stdoutput, seg); |
| 6116 | |
| 6117 | return ((addr + (1 << align) - 1) & (-1 << align)); |
| 6118 | #endif |
| 6119 | } |
| 6120 | |
| 6121 | /* We don't have any form of relaxing. */ |
| 6122 | |
| 6123 | int |
| 6124 | md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED, |
| 6125 | asection *seg ATTRIBUTE_UNUSED) |
| 6126 | { |
| 6127 | abort (); |
| 6128 | return 0; |
| 6129 | } |
| 6130 | |
| 6131 | /* Convert a machine dependent frag. We never generate these. */ |
| 6132 | |
| 6133 | void |
| 6134 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, |
| 6135 | asection *sec ATTRIBUTE_UNUSED, |
| 6136 | fragS *fragp ATTRIBUTE_UNUSED) |
| 6137 | { |
| 6138 | abort (); |
| 6139 | } |
| 6140 | |
| 6141 | /* We have no need to default values of symbols. */ |
| 6142 | |
| 6143 | symbolS * |
| 6144 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
| 6145 | { |
| 6146 | return 0; |
| 6147 | } |
| 6148 | \f |
| 6149 | /* Functions concerning relocs. */ |
| 6150 | |
| 6151 | /* The location from which a PC relative jump should be calculated, |
| 6152 | given a PC relative reloc. */ |
| 6153 | |
| 6154 | long |
| 6155 | md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED) |
| 6156 | { |
| 6157 | return fixp->fx_frag->fr_address + fixp->fx_where; |
| 6158 | } |
| 6159 | |
| 6160 | #ifdef OBJ_XCOFF |
| 6161 | |
| 6162 | /* This is called to see whether a fixup should be adjusted to use a |
| 6163 | section symbol. We take the opportunity to change a fixup against |
| 6164 | a symbol in the TOC subsegment into a reloc against the |
| 6165 | corresponding .tc symbol. */ |
| 6166 | |
| 6167 | int |
| 6168 | ppc_fix_adjustable (fixS *fix) |
| 6169 | { |
| 6170 | valueT val = resolve_symbol_value (fix->fx_addsy); |
| 6171 | segT symseg = S_GET_SEGMENT (fix->fx_addsy); |
| 6172 | TC_SYMFIELD_TYPE *tc; |
| 6173 | |
| 6174 | if (symseg == absolute_section) |
| 6175 | return 0; |
| 6176 | |
| 6177 | /* Always adjust symbols in debugging sections. */ |
| 6178 | if (bfd_get_section_flags (stdoutput, symseg) & SEC_DEBUGGING) |
| 6179 | return 1; |
| 6180 | |
| 6181 | if (ppc_toc_csect != (symbolS *) NULL |
| 6182 | && fix->fx_addsy != ppc_toc_csect |
| 6183 | && symseg == data_section |
| 6184 | && val >= ppc_toc_frag->fr_address |
| 6185 | && (ppc_after_toc_frag == (fragS *) NULL |
| 6186 | || val < ppc_after_toc_frag->fr_address)) |
| 6187 | { |
| 6188 | symbolS *sy; |
| 6189 | |
| 6190 | for (sy = symbol_next (ppc_toc_csect); |
| 6191 | sy != (symbolS *) NULL; |
| 6192 | sy = symbol_next (sy)) |
| 6193 | { |
| 6194 | TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy); |
| 6195 | |
| 6196 | if (sy_tc->symbol_class == XMC_TC0) |
| 6197 | continue; |
| 6198 | if (sy_tc->symbol_class != XMC_TC) |
| 6199 | break; |
| 6200 | if (val == resolve_symbol_value (sy)) |
| 6201 | { |
| 6202 | fix->fx_addsy = sy; |
| 6203 | fix->fx_addnumber = val - ppc_toc_frag->fr_address; |
| 6204 | return 0; |
| 6205 | } |
| 6206 | } |
| 6207 | |
| 6208 | as_bad_where (fix->fx_file, fix->fx_line, |
| 6209 | _("symbol in .toc does not match any .tc")); |
| 6210 | } |
| 6211 | |
| 6212 | /* Possibly adjust the reloc to be against the csect. */ |
| 6213 | tc = symbol_get_tc (fix->fx_addsy); |
| 6214 | if (tc->subseg == 0 |
| 6215 | && tc->symbol_class != XMC_TC0 |
| 6216 | && tc->symbol_class != XMC_TC |
| 6217 | && symseg != bss_section |
| 6218 | /* Don't adjust if this is a reloc in the toc section. */ |
| 6219 | && (symseg != data_section |
| 6220 | || ppc_toc_csect == NULL |
| 6221 | || val < ppc_toc_frag->fr_address |
| 6222 | || (ppc_after_toc_frag != NULL |
| 6223 | && val >= ppc_after_toc_frag->fr_address))) |
| 6224 | { |
| 6225 | symbolS *csect = tc->within; |
| 6226 | |
| 6227 | /* If the symbol was not declared by a label (eg: a section symbol), |
| 6228 | use the section instead of the csect. This doesn't happen in |
| 6229 | normal AIX assembly code. */ |
| 6230 | if (csect == NULL) |
| 6231 | csect = seg_info (symseg)->sym; |
| 6232 | |
| 6233 | fix->fx_offset += val - symbol_get_frag (csect)->fr_address; |
| 6234 | fix->fx_addsy = csect; |
| 6235 | |
| 6236 | return 0; |
| 6237 | } |
| 6238 | |
| 6239 | /* Adjust a reloc against a .lcomm symbol to be against the base |
| 6240 | .lcomm. */ |
| 6241 | if (symseg == bss_section |
| 6242 | && ! S_IS_EXTERNAL (fix->fx_addsy)) |
| 6243 | { |
| 6244 | symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol; |
| 6245 | |
| 6246 | fix->fx_offset += val - resolve_symbol_value (sy); |
| 6247 | fix->fx_addsy = sy; |
| 6248 | } |
| 6249 | |
| 6250 | return 0; |
| 6251 | } |
| 6252 | |
| 6253 | /* A reloc from one csect to another must be kept. The assembler |
| 6254 | will, of course, keep relocs between sections, and it will keep |
| 6255 | absolute relocs, but we need to force it to keep PC relative relocs |
| 6256 | between two csects in the same section. */ |
| 6257 | |
| 6258 | int |
| 6259 | ppc_force_relocation (fixS *fix) |
| 6260 | { |
| 6261 | /* At this point fix->fx_addsy should already have been converted to |
| 6262 | a csect symbol. If the csect does not include the fragment, then |
| 6263 | we need to force the relocation. */ |
| 6264 | if (fix->fx_pcrel |
| 6265 | && fix->fx_addsy != NULL |
| 6266 | && symbol_get_tc (fix->fx_addsy)->subseg != 0 |
| 6267 | && ((symbol_get_frag (fix->fx_addsy)->fr_address |
| 6268 | > fix->fx_frag->fr_address) |
| 6269 | || (symbol_get_tc (fix->fx_addsy)->next != NULL |
| 6270 | && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address |
| 6271 | <= fix->fx_frag->fr_address)))) |
| 6272 | return 1; |
| 6273 | |
| 6274 | return generic_force_reloc (fix); |
| 6275 | } |
| 6276 | |
| 6277 | void |
| 6278 | ppc_new_dot_label (symbolS *sym) |
| 6279 | { |
| 6280 | /* Anchor this label to the current csect for relocations. */ |
| 6281 | symbol_get_tc (sym)->within = ppc_current_csect; |
| 6282 | } |
| 6283 | |
| 6284 | #endif /* OBJ_XCOFF */ |
| 6285 | |
| 6286 | #ifdef OBJ_ELF |
| 6287 | /* If this function returns non-zero, it guarantees that a relocation |
| 6288 | will be emitted for a fixup. */ |
| 6289 | |
| 6290 | int |
| 6291 | ppc_force_relocation (fixS *fix) |
| 6292 | { |
| 6293 | /* Branch prediction relocations must force a relocation, as must |
| 6294 | the vtable description relocs. */ |
| 6295 | switch (fix->fx_r_type) |
| 6296 | { |
| 6297 | case BFD_RELOC_PPC_B16_BRTAKEN: |
| 6298 | case BFD_RELOC_PPC_B16_BRNTAKEN: |
| 6299 | case BFD_RELOC_PPC_BA16_BRTAKEN: |
| 6300 | case BFD_RELOC_PPC_BA16_BRNTAKEN: |
| 6301 | case BFD_RELOC_24_PLT_PCREL: |
| 6302 | case BFD_RELOC_PPC64_TOC: |
| 6303 | return 1; |
| 6304 | case BFD_RELOC_PPC_B26: |
| 6305 | case BFD_RELOC_PPC_BA26: |
| 6306 | case BFD_RELOC_PPC_B16: |
| 6307 | case BFD_RELOC_PPC_BA16: |
| 6308 | /* All branch fixups targeting a localentry symbol must |
| 6309 | force a relocation. */ |
| 6310 | if (fix->fx_addsy) |
| 6311 | { |
| 6312 | asymbol *bfdsym = symbol_get_bfdsym (fix->fx_addsy); |
| 6313 | elf_symbol_type *elfsym |
| 6314 | = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); |
| 6315 | gas_assert (elfsym); |
| 6316 | if ((STO_PPC64_LOCAL_MASK & elfsym->internal_elf_sym.st_other) != 0) |
| 6317 | return 1; |
| 6318 | } |
| 6319 | break; |
| 6320 | default: |
| 6321 | break; |
| 6322 | } |
| 6323 | |
| 6324 | if (fix->fx_r_type >= BFD_RELOC_PPC_TLS |
| 6325 | && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA) |
| 6326 | return 1; |
| 6327 | |
| 6328 | return generic_force_reloc (fix); |
| 6329 | } |
| 6330 | |
| 6331 | int |
| 6332 | ppc_fix_adjustable (fixS *fix) |
| 6333 | { |
| 6334 | switch (fix->fx_r_type) |
| 6335 | { |
| 6336 | /* All branch fixups targeting a localentry symbol must |
| 6337 | continue using the symbol. */ |
| 6338 | case BFD_RELOC_PPC_B26: |
| 6339 | case BFD_RELOC_PPC_BA26: |
| 6340 | case BFD_RELOC_PPC_B16: |
| 6341 | case BFD_RELOC_PPC_BA16: |
| 6342 | case BFD_RELOC_PPC_B16_BRTAKEN: |
| 6343 | case BFD_RELOC_PPC_B16_BRNTAKEN: |
| 6344 | case BFD_RELOC_PPC_BA16_BRTAKEN: |
| 6345 | case BFD_RELOC_PPC_BA16_BRNTAKEN: |
| 6346 | if (fix->fx_addsy) |
| 6347 | { |
| 6348 | asymbol *bfdsym = symbol_get_bfdsym (fix->fx_addsy); |
| 6349 | elf_symbol_type *elfsym |
| 6350 | = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); |
| 6351 | gas_assert (elfsym); |
| 6352 | if ((STO_PPC64_LOCAL_MASK & elfsym->internal_elf_sym.st_other) != 0) |
| 6353 | return 0; |
| 6354 | } |
| 6355 | break; |
| 6356 | default: |
| 6357 | break; |
| 6358 | } |
| 6359 | |
| 6360 | return (fix->fx_r_type != BFD_RELOC_16_GOTOFF |
| 6361 | && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF |
| 6362 | && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF |
| 6363 | && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF |
| 6364 | && fix->fx_r_type != BFD_RELOC_PPC64_GOT16_DS |
| 6365 | && fix->fx_r_type != BFD_RELOC_PPC64_GOT16_LO_DS |
| 6366 | && fix->fx_r_type != BFD_RELOC_GPREL16 |
| 6367 | && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT |
| 6368 | && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY |
| 6369 | && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS |
| 6370 | && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)); |
| 6371 | } |
| 6372 | #endif |
| 6373 | |
| 6374 | void |
| 6375 | ppc_frag_check (struct frag *fragP) |
| 6376 | { |
| 6377 | if (!fragP->has_code) |
| 6378 | return; |
| 6379 | |
| 6380 | if (ppc_mach() == bfd_mach_ppc_vle) |
| 6381 | { |
| 6382 | if (((fragP->fr_address + fragP->insn_addr) & 1) != 0) |
| 6383 | as_bad (_("instruction address is not a multiple of 2")); |
| 6384 | } |
| 6385 | else |
| 6386 | { |
| 6387 | if (((fragP->fr_address + fragP->insn_addr) & 3) != 0) |
| 6388 | as_bad (_("instruction address is not a multiple of 4")); |
| 6389 | } |
| 6390 | } |
| 6391 | |
| 6392 | /* Implement HANDLE_ALIGN. This writes the NOP pattern into an |
| 6393 | rs_align_code frag. */ |
| 6394 | |
| 6395 | void |
| 6396 | ppc_handle_align (struct frag *fragP) |
| 6397 | { |
| 6398 | valueT count = (fragP->fr_next->fr_address |
| 6399 | - (fragP->fr_address + fragP->fr_fix)); |
| 6400 | |
| 6401 | if (ppc_mach() == bfd_mach_ppc_vle && count != 0 && (count & 1) == 0) |
| 6402 | { |
| 6403 | char *dest = fragP->fr_literal + fragP->fr_fix; |
| 6404 | |
| 6405 | fragP->fr_var = 2; |
| 6406 | md_number_to_chars (dest, 0x4400, 2); |
| 6407 | } |
| 6408 | else if (count != 0 && (count & 3) == 0) |
| 6409 | { |
| 6410 | char *dest = fragP->fr_literal + fragP->fr_fix; |
| 6411 | |
| 6412 | fragP->fr_var = 4; |
| 6413 | |
| 6414 | if (count > 4 * nop_limit && count < 0x2000000) |
| 6415 | { |
| 6416 | struct frag *rest; |
| 6417 | |
| 6418 | /* Make a branch, then follow with nops. Insert another |
| 6419 | frag to handle the nops. */ |
| 6420 | md_number_to_chars (dest, 0x48000000 + count, 4); |
| 6421 | count -= 4; |
| 6422 | if (count == 0) |
| 6423 | return; |
| 6424 | |
| 6425 | rest = xmalloc (SIZEOF_STRUCT_FRAG + 4); |
| 6426 | memcpy (rest, fragP, SIZEOF_STRUCT_FRAG); |
| 6427 | fragP->fr_next = rest; |
| 6428 | fragP = rest; |
| 6429 | rest->fr_address += rest->fr_fix + 4; |
| 6430 | rest->fr_fix = 0; |
| 6431 | /* If we leave the next frag as rs_align_code we'll come here |
| 6432 | again, resulting in a bunch of branches rather than a |
| 6433 | branch followed by nops. */ |
| 6434 | rest->fr_type = rs_align; |
| 6435 | dest = rest->fr_literal; |
| 6436 | } |
| 6437 | |
| 6438 | md_number_to_chars (dest, 0x60000000, 4); |
| 6439 | |
| 6440 | if ((ppc_cpu & PPC_OPCODE_POWER6) != 0 |
| 6441 | || (ppc_cpu & PPC_OPCODE_POWER7) != 0 |
| 6442 | || (ppc_cpu & PPC_OPCODE_POWER8) != 0) |
| 6443 | { |
| 6444 | /* For power6, power7 and power8, we want the last nop to be a group |
| 6445 | terminating one. Do this by inserting an rs_fill frag immediately |
| 6446 | after this one, with its address set to the last nop location. |
| 6447 | This will automatically reduce the number of nops in the current |
| 6448 | frag by one. */ |
| 6449 | if (count > 4) |
| 6450 | { |
| 6451 | struct frag *group_nop = xmalloc (SIZEOF_STRUCT_FRAG + 4); |
| 6452 | |
| 6453 | memcpy (group_nop, fragP, SIZEOF_STRUCT_FRAG); |
| 6454 | group_nop->fr_address = group_nop->fr_next->fr_address - 4; |
| 6455 | group_nop->fr_fix = 0; |
| 6456 | group_nop->fr_offset = 1; |
| 6457 | group_nop->fr_type = rs_fill; |
| 6458 | fragP->fr_next = group_nop; |
| 6459 | dest = group_nop->fr_literal; |
| 6460 | } |
| 6461 | |
| 6462 | if ((ppc_cpu & PPC_OPCODE_POWER7) != 0 |
| 6463 | || (ppc_cpu & PPC_OPCODE_POWER8) != 0) |
| 6464 | { |
| 6465 | if (ppc_cpu & PPC_OPCODE_E500MC) |
| 6466 | /* e500mc group terminating nop: "ori 0,0,0". */ |
| 6467 | md_number_to_chars (dest, 0x60000000, 4); |
| 6468 | else |
| 6469 | /* power7/power8 group terminating nop: "ori 2,2,0". */ |
| 6470 | md_number_to_chars (dest, 0x60420000, 4); |
| 6471 | } |
| 6472 | else |
| 6473 | /* power6 group terminating nop: "ori 1,1,0". */ |
| 6474 | md_number_to_chars (dest, 0x60210000, 4); |
| 6475 | } |
| 6476 | } |
| 6477 | } |
| 6478 | |
| 6479 | /* Apply a fixup to the object code. This is called for all the |
| 6480 | fixups we generated by the calls to fix_new_exp, above. */ |
| 6481 | |
| 6482 | void |
| 6483 | md_apply_fix (fixS *fixP, valueT *valP, segT seg) |
| 6484 | { |
| 6485 | valueT value = * valP; |
| 6486 | offsetT fieldval; |
| 6487 | const struct powerpc_operand *operand; |
| 6488 | |
| 6489 | #ifdef OBJ_ELF |
| 6490 | if (fixP->fx_addsy != NULL) |
| 6491 | { |
| 6492 | /* Hack around bfd_install_relocation brain damage. */ |
| 6493 | if (fixP->fx_pcrel) |
| 6494 | value += fixP->fx_frag->fr_address + fixP->fx_where; |
| 6495 | } |
| 6496 | else |
| 6497 | fixP->fx_done = 1; |
| 6498 | #else |
| 6499 | /* FIXME FIXME FIXME: The value we are passed in *valP includes |
| 6500 | the symbol values. If we are doing this relocation the code in |
| 6501 | write.c is going to call bfd_install_relocation, which is also |
| 6502 | going to use the symbol value. That means that if the reloc is |
| 6503 | fully resolved we want to use *valP since bfd_install_relocation is |
| 6504 | not being used. |
| 6505 | However, if the reloc is not fully resolved we do not want to |
| 6506 | use *valP, and must use fx_offset instead. If the relocation |
| 6507 | is PC-relative, we then need to re-apply md_pcrel_from_section |
| 6508 | to this new relocation value. */ |
| 6509 | if (fixP->fx_addsy == (symbolS *) NULL) |
| 6510 | fixP->fx_done = 1; |
| 6511 | |
| 6512 | else |
| 6513 | { |
| 6514 | value = fixP->fx_offset; |
| 6515 | if (fixP->fx_pcrel) |
| 6516 | value -= md_pcrel_from_section (fixP, seg); |
| 6517 | } |
| 6518 | #endif |
| 6519 | |
| 6520 | if (fixP->fx_subsy != (symbolS *) NULL) |
| 6521 | { |
| 6522 | /* We can't actually support subtracting a symbol. */ |
| 6523 | as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex")); |
| 6524 | } |
| 6525 | |
| 6526 | operand = NULL; |
| 6527 | if (fixP->fx_pcrel_adjust != 0) |
| 6528 | { |
| 6529 | /* This is a fixup on an instruction. */ |
| 6530 | int opindex = fixP->fx_pcrel_adjust & 0xff; |
| 6531 | |
| 6532 | operand = &powerpc_operands[opindex]; |
| 6533 | #ifdef OBJ_XCOFF |
| 6534 | /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol |
| 6535 | does not generate a reloc. It uses the offset of `sym' within its |
| 6536 | csect. Other usages, such as `.long sym', generate relocs. This |
| 6537 | is the documented behaviour of non-TOC symbols. */ |
| 6538 | if ((operand->flags & PPC_OPERAND_PARENS) != 0 |
| 6539 | && (operand->bitm & 0xfff0) == 0xfff0 |
| 6540 | && operand->shift == 0 |
| 6541 | && (operand->insert == NULL || ppc_obj64) |
| 6542 | && fixP->fx_addsy != NULL |
| 6543 | && symbol_get_tc (fixP->fx_addsy)->subseg != 0 |
| 6544 | && symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC |
| 6545 | && symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC0 |
| 6546 | && S_GET_SEGMENT (fixP->fx_addsy) != bss_section) |
| 6547 | { |
| 6548 | value = fixP->fx_offset; |
| 6549 | fixP->fx_done = 1; |
| 6550 | } |
| 6551 | |
| 6552 | /* During parsing of instructions, a TOC16 reloc is generated for |
| 6553 | instructions such as 'lwz RT,SYM(RB)' if SYM is a symbol defined |
| 6554 | in the toc. But at parse time, SYM may be not yet defined, so |
| 6555 | check again here. */ |
| 6556 | if (fixP->fx_r_type == BFD_RELOC_16 |
| 6557 | && fixP->fx_addsy != NULL |
| 6558 | && ppc_is_toc_sym (fixP->fx_addsy)) |
| 6559 | fixP->fx_r_type = BFD_RELOC_PPC_TOC16; |
| 6560 | #endif |
| 6561 | } |
| 6562 | |
| 6563 | /* Calculate value to be stored in field. */ |
| 6564 | fieldval = value; |
| 6565 | switch (fixP->fx_r_type) |
| 6566 | { |
| 6567 | #ifdef OBJ_ELF |
| 6568 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
| 6569 | case BFD_RELOC_PPC_VLE_LO16A: |
| 6570 | case BFD_RELOC_PPC_VLE_LO16D: |
| 6571 | #endif |
| 6572 | case BFD_RELOC_LO16: |
| 6573 | case BFD_RELOC_LO16_PCREL: |
| 6574 | fieldval = value & 0xffff; |
| 6575 | sign_extend_16: |
| 6576 | if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 6577 | fieldval = SEX16 (fieldval); |
| 6578 | fixP->fx_no_overflow = 1; |
| 6579 | break; |
| 6580 | |
| 6581 | case BFD_RELOC_HI16: |
| 6582 | case BFD_RELOC_HI16_PCREL: |
| 6583 | #ifdef OBJ_ELF |
| 6584 | if (REPORT_OVERFLOW_HI && ppc_obj64) |
| 6585 | { |
| 6586 | fieldval = value >> 16; |
| 6587 | if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 6588 | { |
| 6589 | valueT sign = (((valueT) -1 >> 16) + 1) >> 1; |
| 6590 | fieldval = ((valueT) fieldval ^ sign) - sign; |
| 6591 | } |
| 6592 | break; |
| 6593 | } |
| 6594 | /* Fall thru */ |
| 6595 | |
| 6596 | case BFD_RELOC_PPC_VLE_HI16A: |
| 6597 | case BFD_RELOC_PPC_VLE_HI16D: |
| 6598 | case BFD_RELOC_PPC64_ADDR16_HIGH: |
| 6599 | #endif |
| 6600 | fieldval = PPC_HI (value); |
| 6601 | goto sign_extend_16; |
| 6602 | |
| 6603 | case BFD_RELOC_HI16_S: |
| 6604 | case BFD_RELOC_HI16_S_PCREL: |
| 6605 | #ifdef OBJ_ELF |
| 6606 | if (REPORT_OVERFLOW_HI && ppc_obj64) |
| 6607 | { |
| 6608 | fieldval = (value + 0x8000) >> 16; |
| 6609 | if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0) |
| 6610 | { |
| 6611 | valueT sign = (((valueT) -1 >> 16) + 1) >> 1; |
| 6612 | fieldval = ((valueT) fieldval ^ sign) - sign; |
| 6613 | } |
| 6614 | break; |
| 6615 | } |
| 6616 | /* Fall thru */ |
| 6617 | |
| 6618 | case BFD_RELOC_PPC_VLE_HA16A: |
| 6619 | case BFD_RELOC_PPC_VLE_HA16D: |
| 6620 | case BFD_RELOC_PPC64_ADDR16_HIGHA: |
| 6621 | #endif |
| 6622 | fieldval = PPC_HA (value); |
| 6623 | goto sign_extend_16; |
| 6624 | |
| 6625 | #ifdef OBJ_ELF |
| 6626 | case BFD_RELOC_PPC64_HIGHER: |
| 6627 | fieldval = PPC_HIGHER (value); |
| 6628 | goto sign_extend_16; |
| 6629 | |
| 6630 | case BFD_RELOC_PPC64_HIGHER_S: |
| 6631 | fieldval = PPC_HIGHERA (value); |
| 6632 | goto sign_extend_16; |
| 6633 | |
| 6634 | case BFD_RELOC_PPC64_HIGHEST: |
| 6635 | fieldval = PPC_HIGHEST (value); |
| 6636 | goto sign_extend_16; |
| 6637 | |
| 6638 | case BFD_RELOC_PPC64_HIGHEST_S: |
| 6639 | fieldval = PPC_HIGHESTA (value); |
| 6640 | goto sign_extend_16; |
| 6641 | #endif |
| 6642 | |
| 6643 | default: |
| 6644 | break; |
| 6645 | } |
| 6646 | |
| 6647 | if (operand != NULL) |
| 6648 | { |
| 6649 | /* Handle relocs in an insn. */ |
| 6650 | char *where; |
| 6651 | unsigned long insn; |
| 6652 | |
| 6653 | switch (fixP->fx_r_type) |
| 6654 | { |
| 6655 | #ifdef OBJ_ELF |
| 6656 | /* The following relocs can't be calculated by the assembler. |
| 6657 | Leave the field zero. */ |
| 6658 | case BFD_RELOC_PPC_TPREL16: |
| 6659 | case BFD_RELOC_PPC_TPREL16_LO: |
| 6660 | case BFD_RELOC_PPC_TPREL16_HI: |
| 6661 | case BFD_RELOC_PPC_TPREL16_HA: |
| 6662 | case BFD_RELOC_PPC_DTPREL16: |
| 6663 | case BFD_RELOC_PPC_DTPREL16_LO: |
| 6664 | case BFD_RELOC_PPC_DTPREL16_HI: |
| 6665 | case BFD_RELOC_PPC_DTPREL16_HA: |
| 6666 | case BFD_RELOC_PPC_GOT_TLSGD16: |
| 6667 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: |
| 6668 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: |
| 6669 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: |
| 6670 | case BFD_RELOC_PPC_GOT_TLSLD16: |
| 6671 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: |
| 6672 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: |
| 6673 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: |
| 6674 | case BFD_RELOC_PPC_GOT_TPREL16: |
| 6675 | case BFD_RELOC_PPC_GOT_TPREL16_LO: |
| 6676 | case BFD_RELOC_PPC_GOT_TPREL16_HI: |
| 6677 | case BFD_RELOC_PPC_GOT_TPREL16_HA: |
| 6678 | case BFD_RELOC_PPC_GOT_DTPREL16: |
| 6679 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: |
| 6680 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: |
| 6681 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: |
| 6682 | case BFD_RELOC_PPC64_TPREL16_DS: |
| 6683 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
| 6684 | case BFD_RELOC_PPC64_TPREL16_HIGH: |
| 6685 | case BFD_RELOC_PPC64_TPREL16_HIGHA: |
| 6686 | case BFD_RELOC_PPC64_TPREL16_HIGHER: |
| 6687 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: |
| 6688 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: |
| 6689 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: |
| 6690 | case BFD_RELOC_PPC64_DTPREL16_HIGH: |
| 6691 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: |
| 6692 | case BFD_RELOC_PPC64_DTPREL16_DS: |
| 6693 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
| 6694 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: |
| 6695 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: |
| 6696 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: |
| 6697 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: |
| 6698 | gas_assert (fixP->fx_addsy != NULL); |
| 6699 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
| 6700 | fieldval = 0; |
| 6701 | break; |
| 6702 | |
| 6703 | /* These also should leave the field zero for the same |
| 6704 | reason. Note that older versions of gas wrote values |
| 6705 | here. If we want to go back to the old behaviour, then |
| 6706 | all _LO and _LO_DS cases will need to be treated like |
| 6707 | BFD_RELOC_LO16_PCREL above. Similarly for _HI etc. */ |
| 6708 | case BFD_RELOC_16_GOTOFF: |
| 6709 | case BFD_RELOC_LO16_GOTOFF: |
| 6710 | case BFD_RELOC_HI16_GOTOFF: |
| 6711 | case BFD_RELOC_HI16_S_GOTOFF: |
| 6712 | case BFD_RELOC_LO16_PLTOFF: |
| 6713 | case BFD_RELOC_HI16_PLTOFF: |
| 6714 | case BFD_RELOC_HI16_S_PLTOFF: |
| 6715 | case BFD_RELOC_GPREL16: |
| 6716 | case BFD_RELOC_16_BASEREL: |
| 6717 | case BFD_RELOC_LO16_BASEREL: |
| 6718 | case BFD_RELOC_HI16_BASEREL: |
| 6719 | case BFD_RELOC_HI16_S_BASEREL: |
| 6720 | case BFD_RELOC_PPC_TOC16: |
| 6721 | case BFD_RELOC_PPC64_TOC16_LO: |
| 6722 | case BFD_RELOC_PPC64_TOC16_HI: |
| 6723 | case BFD_RELOC_PPC64_TOC16_HA: |
| 6724 | case BFD_RELOC_PPC64_PLTGOT16: |
| 6725 | case BFD_RELOC_PPC64_PLTGOT16_LO: |
| 6726 | case BFD_RELOC_PPC64_PLTGOT16_HI: |
| 6727 | case BFD_RELOC_PPC64_PLTGOT16_HA: |
| 6728 | case BFD_RELOC_PPC64_GOT16_DS: |
| 6729 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
| 6730 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
| 6731 | case BFD_RELOC_PPC64_SECTOFF_DS: |
| 6732 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
| 6733 | case BFD_RELOC_PPC64_TOC16_DS: |
| 6734 | case BFD_RELOC_PPC64_TOC16_LO_DS: |
| 6735 | case BFD_RELOC_PPC64_PLTGOT16_DS: |
| 6736 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: |
| 6737 | case BFD_RELOC_PPC_EMB_NADDR16: |
| 6738 | case BFD_RELOC_PPC_EMB_NADDR16_LO: |
| 6739 | case BFD_RELOC_PPC_EMB_NADDR16_HI: |
| 6740 | case BFD_RELOC_PPC_EMB_NADDR16_HA: |
| 6741 | case BFD_RELOC_PPC_EMB_SDAI16: |
| 6742 | case BFD_RELOC_PPC_EMB_SDA2I16: |
| 6743 | case BFD_RELOC_PPC_EMB_SDA2REL: |
| 6744 | case BFD_RELOC_PPC_EMB_SDA21: |
| 6745 | case BFD_RELOC_PPC_EMB_MRKREF: |
| 6746 | case BFD_RELOC_PPC_EMB_RELSEC16: |
| 6747 | case BFD_RELOC_PPC_EMB_RELST_LO: |
| 6748 | case BFD_RELOC_PPC_EMB_RELST_HI: |
| 6749 | case BFD_RELOC_PPC_EMB_RELST_HA: |
| 6750 | case BFD_RELOC_PPC_EMB_BIT_FLD: |
| 6751 | case BFD_RELOC_PPC_EMB_RELSDA: |
| 6752 | case BFD_RELOC_PPC_VLE_SDA21: |
| 6753 | case BFD_RELOC_PPC_VLE_SDA21_LO: |
| 6754 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: |
| 6755 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: |
| 6756 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: |
| 6757 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: |
| 6758 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: |
| 6759 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: |
| 6760 | gas_assert (fixP->fx_addsy != NULL); |
| 6761 | /* Fall thru */ |
| 6762 | |
| 6763 | case BFD_RELOC_PPC_TLS: |
| 6764 | case BFD_RELOC_PPC_TLSGD: |
| 6765 | case BFD_RELOC_PPC_TLSLD: |
| 6766 | fieldval = 0; |
| 6767 | break; |
| 6768 | #endif |
| 6769 | |
| 6770 | #ifdef OBJ_XCOFF |
| 6771 | case BFD_RELOC_PPC_B16: |
| 6772 | /* Adjust the offset to the instruction boundary. */ |
| 6773 | fieldval += 2; |
| 6774 | break; |
| 6775 | #endif |
| 6776 | |
| 6777 | default: |
| 6778 | break; |
| 6779 | } |
| 6780 | |
| 6781 | #ifdef OBJ_ELF |
| 6782 | /* powerpc uses RELA style relocs, so if emitting a reloc the field |
| 6783 | contents can stay at zero. */ |
| 6784 | #define APPLY_RELOC fixP->fx_done |
| 6785 | #else |
| 6786 | #define APPLY_RELOC 1 |
| 6787 | #endif |
| 6788 | if ((fieldval != 0 && APPLY_RELOC) || operand->insert != NULL) |
| 6789 | { |
| 6790 | /* Fetch the instruction, insert the fully resolved operand |
| 6791 | value, and stuff the instruction back again. */ |
| 6792 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
| 6793 | if (target_big_endian) |
| 6794 | { |
| 6795 | if (fixP->fx_size == 4) |
| 6796 | insn = bfd_getb32 ((unsigned char *) where); |
| 6797 | else |
| 6798 | insn = bfd_getb16 ((unsigned char *) where); |
| 6799 | } |
| 6800 | else |
| 6801 | { |
| 6802 | if (fixP->fx_size == 4) |
| 6803 | insn = bfd_getl32 ((unsigned char *) where); |
| 6804 | else |
| 6805 | insn = bfd_getl16 ((unsigned char *) where); |
| 6806 | } |
| 6807 | insn = ppc_insert_operand (insn, operand, fieldval, |
| 6808 | fixP->tc_fix_data.ppc_cpu, |
| 6809 | fixP->fx_file, fixP->fx_line); |
| 6810 | if (target_big_endian) |
| 6811 | { |
| 6812 | if (fixP->fx_size == 4) |
| 6813 | bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); |
| 6814 | else |
| 6815 | bfd_putb16 ((bfd_vma) insn, (unsigned char *) where); |
| 6816 | } |
| 6817 | else |
| 6818 | { |
| 6819 | if (fixP->fx_size == 4) |
| 6820 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); |
| 6821 | else |
| 6822 | bfd_putl16 ((bfd_vma) insn, (unsigned char *) where); |
| 6823 | } |
| 6824 | } |
| 6825 | |
| 6826 | if (fixP->fx_done) |
| 6827 | /* Nothing else to do here. */ |
| 6828 | return; |
| 6829 | |
| 6830 | gas_assert (fixP->fx_addsy != NULL); |
| 6831 | if (fixP->fx_r_type == BFD_RELOC_NONE) |
| 6832 | { |
| 6833 | char *sfile; |
| 6834 | unsigned int sline; |
| 6835 | |
| 6836 | /* Use expr_symbol_where to see if this is an expression |
| 6837 | symbol. */ |
| 6838 | if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline)) |
| 6839 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 6840 | _("unresolved expression that must be resolved")); |
| 6841 | else |
| 6842 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 6843 | _("unsupported relocation against %s"), |
| 6844 | S_GET_NAME (fixP->fx_addsy)); |
| 6845 | fixP->fx_done = 1; |
| 6846 | return; |
| 6847 | } |
| 6848 | } |
| 6849 | else |
| 6850 | { |
| 6851 | /* Handle relocs in data. */ |
| 6852 | switch (fixP->fx_r_type) |
| 6853 | { |
| 6854 | case BFD_RELOC_VTABLE_INHERIT: |
| 6855 | if (fixP->fx_addsy |
| 6856 | && !S_IS_DEFINED (fixP->fx_addsy) |
| 6857 | && !S_IS_WEAK (fixP->fx_addsy)) |
| 6858 | S_SET_WEAK (fixP->fx_addsy); |
| 6859 | /* Fall thru */ |
| 6860 | |
| 6861 | case BFD_RELOC_VTABLE_ENTRY: |
| 6862 | fixP->fx_done = 0; |
| 6863 | break; |
| 6864 | |
| 6865 | #ifdef OBJ_ELF |
| 6866 | /* These can appear with @l etc. in data. */ |
| 6867 | case BFD_RELOC_LO16: |
| 6868 | case BFD_RELOC_LO16_PCREL: |
| 6869 | case BFD_RELOC_HI16: |
| 6870 | case BFD_RELOC_HI16_PCREL: |
| 6871 | case BFD_RELOC_HI16_S: |
| 6872 | case BFD_RELOC_HI16_S_PCREL: |
| 6873 | case BFD_RELOC_PPC64_HIGHER: |
| 6874 | case BFD_RELOC_PPC64_HIGHER_S: |
| 6875 | case BFD_RELOC_PPC64_HIGHEST: |
| 6876 | case BFD_RELOC_PPC64_HIGHEST_S: |
| 6877 | case BFD_RELOC_PPC64_ADDR16_HIGH: |
| 6878 | case BFD_RELOC_PPC64_ADDR16_HIGHA: |
| 6879 | case BFD_RELOC_PPC64_ADDR64_LOCAL: |
| 6880 | break; |
| 6881 | |
| 6882 | case BFD_RELOC_PPC_DTPMOD: |
| 6883 | case BFD_RELOC_PPC_TPREL: |
| 6884 | case BFD_RELOC_PPC_DTPREL: |
| 6885 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
| 6886 | break; |
| 6887 | |
| 6888 | /* Just punt all of these to the linker. */ |
| 6889 | case BFD_RELOC_PPC_B16_BRTAKEN: |
| 6890 | case BFD_RELOC_PPC_B16_BRNTAKEN: |
| 6891 | case BFD_RELOC_16_GOTOFF: |
| 6892 | case BFD_RELOC_LO16_GOTOFF: |
| 6893 | case BFD_RELOC_HI16_GOTOFF: |
| 6894 | case BFD_RELOC_HI16_S_GOTOFF: |
| 6895 | case BFD_RELOC_LO16_PLTOFF: |
| 6896 | case BFD_RELOC_HI16_PLTOFF: |
| 6897 | case BFD_RELOC_HI16_S_PLTOFF: |
| 6898 | case BFD_RELOC_PPC_COPY: |
| 6899 | case BFD_RELOC_PPC_GLOB_DAT: |
| 6900 | case BFD_RELOC_16_BASEREL: |
| 6901 | case BFD_RELOC_LO16_BASEREL: |
| 6902 | case BFD_RELOC_HI16_BASEREL: |
| 6903 | case BFD_RELOC_HI16_S_BASEREL: |
| 6904 | case BFD_RELOC_PPC_TLS: |
| 6905 | case BFD_RELOC_PPC_DTPREL16_LO: |
| 6906 | case BFD_RELOC_PPC_DTPREL16_HI: |
| 6907 | case BFD_RELOC_PPC_DTPREL16_HA: |
| 6908 | case BFD_RELOC_PPC_TPREL16_LO: |
| 6909 | case BFD_RELOC_PPC_TPREL16_HI: |
| 6910 | case BFD_RELOC_PPC_TPREL16_HA: |
| 6911 | case BFD_RELOC_PPC_GOT_TLSGD16: |
| 6912 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: |
| 6913 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: |
| 6914 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: |
| 6915 | case BFD_RELOC_PPC_GOT_TLSLD16: |
| 6916 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: |
| 6917 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: |
| 6918 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: |
| 6919 | case BFD_RELOC_PPC_GOT_DTPREL16: |
| 6920 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: |
| 6921 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: |
| 6922 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: |
| 6923 | case BFD_RELOC_PPC_GOT_TPREL16: |
| 6924 | case BFD_RELOC_PPC_GOT_TPREL16_LO: |
| 6925 | case BFD_RELOC_PPC_GOT_TPREL16_HI: |
| 6926 | case BFD_RELOC_PPC_GOT_TPREL16_HA: |
| 6927 | case BFD_RELOC_24_PLT_PCREL: |
| 6928 | case BFD_RELOC_PPC_LOCAL24PC: |
| 6929 | case BFD_RELOC_32_PLT_PCREL: |
| 6930 | case BFD_RELOC_GPREL16: |
| 6931 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: |
| 6932 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: |
| 6933 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: |
| 6934 | case BFD_RELOC_PPC_EMB_NADDR32: |
| 6935 | case BFD_RELOC_PPC_EMB_NADDR16: |
| 6936 | case BFD_RELOC_PPC_EMB_NADDR16_LO: |
| 6937 | case BFD_RELOC_PPC_EMB_NADDR16_HI: |
| 6938 | case BFD_RELOC_PPC_EMB_NADDR16_HA: |
| 6939 | case BFD_RELOC_PPC_EMB_SDAI16: |
| 6940 | case BFD_RELOC_PPC_EMB_SDA2REL: |
| 6941 | case BFD_RELOC_PPC_EMB_SDA2I16: |
| 6942 | case BFD_RELOC_PPC_EMB_SDA21: |
| 6943 | case BFD_RELOC_PPC_VLE_SDA21_LO: |
| 6944 | case BFD_RELOC_PPC_EMB_MRKREF: |
| 6945 | case BFD_RELOC_PPC_EMB_RELSEC16: |
| 6946 | case BFD_RELOC_PPC_EMB_RELST_LO: |
| 6947 | case BFD_RELOC_PPC_EMB_RELST_HI: |
| 6948 | case BFD_RELOC_PPC_EMB_RELST_HA: |
| 6949 | case BFD_RELOC_PPC_EMB_BIT_FLD: |
| 6950 | case BFD_RELOC_PPC_EMB_RELSDA: |
| 6951 | case BFD_RELOC_PPC64_TOC: |
| 6952 | case BFD_RELOC_PPC_TOC16: |
| 6953 | case BFD_RELOC_PPC64_TOC16_LO: |
| 6954 | case BFD_RELOC_PPC64_TOC16_HI: |
| 6955 | case BFD_RELOC_PPC64_TOC16_HA: |
| 6956 | case BFD_RELOC_PPC64_DTPREL16_HIGH: |
| 6957 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: |
| 6958 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: |
| 6959 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: |
| 6960 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: |
| 6961 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: |
| 6962 | case BFD_RELOC_PPC64_TPREL16_HIGH: |
| 6963 | case BFD_RELOC_PPC64_TPREL16_HIGHA: |
| 6964 | case BFD_RELOC_PPC64_TPREL16_HIGHER: |
| 6965 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: |
| 6966 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: |
| 6967 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: |
| 6968 | fixP->fx_done = 0; |
| 6969 | break; |
| 6970 | #endif |
| 6971 | |
| 6972 | #ifdef OBJ_XCOFF |
| 6973 | case BFD_RELOC_NONE: |
| 6974 | #endif |
| 6975 | case BFD_RELOC_CTOR: |
| 6976 | case BFD_RELOC_32: |
| 6977 | case BFD_RELOC_32_PCREL: |
| 6978 | case BFD_RELOC_RVA: |
| 6979 | case BFD_RELOC_64: |
| 6980 | case BFD_RELOC_64_PCREL: |
| 6981 | case BFD_RELOC_16: |
| 6982 | case BFD_RELOC_16_PCREL: |
| 6983 | case BFD_RELOC_8: |
| 6984 | break; |
| 6985 | |
| 6986 | default: |
| 6987 | fprintf (stderr, |
| 6988 | _("Gas failure, reloc value %d\n"), fixP->fx_r_type); |
| 6989 | fflush (stderr); |
| 6990 | abort (); |
| 6991 | } |
| 6992 | |
| 6993 | if (fixP->fx_size && APPLY_RELOC) |
| 6994 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, |
| 6995 | fieldval, fixP->fx_size); |
| 6996 | if (warn_476 |
| 6997 | && (seg->flags & SEC_CODE) != 0 |
| 6998 | && fixP->fx_size == 4 |
| 6999 | && fixP->fx_done |
| 7000 | && !fixP->fx_tcbit |
| 7001 | && (fixP->fx_r_type == BFD_RELOC_32 |
| 7002 | || fixP->fx_r_type == BFD_RELOC_CTOR |
| 7003 | || fixP->fx_r_type == BFD_RELOC_32_PCREL)) |
| 7004 | as_warn_where (fixP->fx_file, fixP->fx_line, |
| 7005 | _("data in executable section")); |
| 7006 | } |
| 7007 | |
| 7008 | /* We are only able to convert some relocs to pc-relative. */ |
| 7009 | if (!fixP->fx_done && fixP->fx_pcrel) |
| 7010 | { |
| 7011 | switch (fixP->fx_r_type) |
| 7012 | { |
| 7013 | case BFD_RELOC_LO16: |
| 7014 | fixP->fx_r_type = BFD_RELOC_LO16_PCREL; |
| 7015 | break; |
| 7016 | |
| 7017 | case BFD_RELOC_HI16: |
| 7018 | fixP->fx_r_type = BFD_RELOC_HI16_PCREL; |
| 7019 | break; |
| 7020 | |
| 7021 | case BFD_RELOC_HI16_S: |
| 7022 | fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL; |
| 7023 | break; |
| 7024 | |
| 7025 | case BFD_RELOC_64: |
| 7026 | fixP->fx_r_type = BFD_RELOC_64_PCREL; |
| 7027 | break; |
| 7028 | |
| 7029 | case BFD_RELOC_32: |
| 7030 | fixP->fx_r_type = BFD_RELOC_32_PCREL; |
| 7031 | break; |
| 7032 | |
| 7033 | case BFD_RELOC_16: |
| 7034 | fixP->fx_r_type = BFD_RELOC_16_PCREL; |
| 7035 | break; |
| 7036 | |
| 7037 | /* Some of course are already pc-relative. */ |
| 7038 | case BFD_RELOC_LO16_PCREL: |
| 7039 | case BFD_RELOC_HI16_PCREL: |
| 7040 | case BFD_RELOC_HI16_S_PCREL: |
| 7041 | case BFD_RELOC_64_PCREL: |
| 7042 | case BFD_RELOC_32_PCREL: |
| 7043 | case BFD_RELOC_16_PCREL: |
| 7044 | case BFD_RELOC_PPC_B16: |
| 7045 | case BFD_RELOC_PPC_B16_BRTAKEN: |
| 7046 | case BFD_RELOC_PPC_B16_BRNTAKEN: |
| 7047 | case BFD_RELOC_PPC_B26: |
| 7048 | case BFD_RELOC_PPC_LOCAL24PC: |
| 7049 | case BFD_RELOC_24_PLT_PCREL: |
| 7050 | case BFD_RELOC_32_PLT_PCREL: |
| 7051 | case BFD_RELOC_64_PLT_PCREL: |
| 7052 | case BFD_RELOC_PPC_VLE_REL8: |
| 7053 | case BFD_RELOC_PPC_VLE_REL15: |
| 7054 | case BFD_RELOC_PPC_VLE_REL24: |
| 7055 | break; |
| 7056 | |
| 7057 | default: |
| 7058 | if (fixP->fx_addsy) |
| 7059 | { |
| 7060 | char *sfile; |
| 7061 | unsigned int sline; |
| 7062 | |
| 7063 | /* Use expr_symbol_where to see if this is an |
| 7064 | expression symbol. */ |
| 7065 | if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline)) |
| 7066 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 7067 | _("unresolved expression that must" |
| 7068 | " be resolved")); |
| 7069 | else |
| 7070 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 7071 | _("cannot emit PC relative %s relocation" |
| 7072 | " against %s"), |
| 7073 | bfd_get_reloc_code_name (fixP->fx_r_type), |
| 7074 | S_GET_NAME (fixP->fx_addsy)); |
| 7075 | } |
| 7076 | else |
| 7077 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 7078 | _("unable to resolve expression")); |
| 7079 | fixP->fx_done = 1; |
| 7080 | break; |
| 7081 | } |
| 7082 | } |
| 7083 | |
| 7084 | #ifdef OBJ_ELF |
| 7085 | ppc_elf_validate_fix (fixP, seg); |
| 7086 | fixP->fx_addnumber = value; |
| 7087 | |
| 7088 | /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately |
| 7089 | from the section contents. If we are going to be emitting a reloc |
| 7090 | then the section contents are immaterial, so don't warn if they |
| 7091 | happen to overflow. Leave such warnings to ld. */ |
| 7092 | if (!fixP->fx_done) |
| 7093 | { |
| 7094 | fixP->fx_no_overflow = 1; |
| 7095 | |
| 7096 | /* Arrange to emit .TOC. as a normal symbol if used in anything |
| 7097 | but .TOC.@tocbase. */ |
| 7098 | if (ppc_obj64 |
| 7099 | && fixP->fx_r_type != BFD_RELOC_PPC64_TOC |
| 7100 | && fixP->fx_addsy != NULL |
| 7101 | && strcmp (S_GET_NAME (fixP->fx_addsy), ".TOC.") == 0) |
| 7102 | symbol_get_bfdsym (fixP->fx_addsy)->flags |= BSF_KEEP; |
| 7103 | } |
| 7104 | #else |
| 7105 | if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16) |
| 7106 | fixP->fx_addnumber = 0; |
| 7107 | else |
| 7108 | { |
| 7109 | #ifdef TE_PE |
| 7110 | fixP->fx_addnumber = 0; |
| 7111 | #else |
| 7112 | /* We want to use the offset within the toc, not the actual VMA |
| 7113 | of the symbol. */ |
| 7114 | fixP->fx_addnumber = |
| 7115 | - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy)) |
| 7116 | - S_GET_VALUE (ppc_toc_csect); |
| 7117 | /* Set *valP to avoid errors. */ |
| 7118 | *valP = value; |
| 7119 | #endif |
| 7120 | } |
| 7121 | #endif |
| 7122 | } |
| 7123 | |
| 7124 | /* Generate a reloc for a fixup. */ |
| 7125 | |
| 7126 | arelent * |
| 7127 | tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp) |
| 7128 | { |
| 7129 | arelent *reloc; |
| 7130 | |
| 7131 | reloc = (arelent *) xmalloc (sizeof (arelent)); |
| 7132 | |
| 7133 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 7134 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 7135 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 7136 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| 7137 | if (reloc->howto == (reloc_howto_type *) NULL) |
| 7138 | { |
| 7139 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 7140 | _("reloc %d not supported by object file format"), |
| 7141 | (int) fixp->fx_r_type); |
| 7142 | return NULL; |
| 7143 | } |
| 7144 | reloc->addend = fixp->fx_addnumber; |
| 7145 | |
| 7146 | return reloc; |
| 7147 | } |
| 7148 | |
| 7149 | void |
| 7150 | ppc_cfi_frame_initial_instructions (void) |
| 7151 | { |
| 7152 | cfi_add_CFA_def_cfa (1, 0); |
| 7153 | } |
| 7154 | |
| 7155 | int |
| 7156 | tc_ppc_regname_to_dw2regnum (char *regname) |
| 7157 | { |
| 7158 | unsigned int regnum = -1; |
| 7159 | unsigned int i; |
| 7160 | const char *p; |
| 7161 | char *q; |
| 7162 | static struct { char *name; int dw2regnum; } regnames[] = |
| 7163 | { |
| 7164 | { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 }, |
| 7165 | { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 }, |
| 7166 | { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 }, |
| 7167 | { "spe_acc", 111 }, { "spefscr", 112 } |
| 7168 | }; |
| 7169 | |
| 7170 | for (i = 0; i < ARRAY_SIZE (regnames); ++i) |
| 7171 | if (strcmp (regnames[i].name, regname) == 0) |
| 7172 | return regnames[i].dw2regnum; |
| 7173 | |
| 7174 | if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v') |
| 7175 | { |
| 7176 | p = regname + 1 + (regname[1] == '.'); |
| 7177 | regnum = strtoul (p, &q, 10); |
| 7178 | if (p == q || *q || regnum >= 32) |
| 7179 | return -1; |
| 7180 | if (regname[0] == 'f') |
| 7181 | regnum += 32; |
| 7182 | else if (regname[0] == 'v') |
| 7183 | regnum += 77; |
| 7184 | } |
| 7185 | else if (regname[0] == 'c' && regname[1] == 'r') |
| 7186 | { |
| 7187 | p = regname + 2 + (regname[2] == '.'); |
| 7188 | if (p[0] < '0' || p[0] > '7' || p[1]) |
| 7189 | return -1; |
| 7190 | regnum = p[0] - '0' + 68; |
| 7191 | } |
| 7192 | return regnum; |
| 7193 | } |