gas/config/obj-coff.h

   1 /* coff object file format
   2    Copyright (C) 1989, 90, 91, 92, 94, 95, 96, 97, 98, 1999
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GAS.
   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 2, 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, 59 Temple Place - Suite 330, Boston, MA
  20    02111-1307, USA.  */
  21
  22 #ifndef OBJ_FORMAT_H
  23 #define OBJ_FORMAT_H
  24
  25 #define OBJ_COFF 1
  26
  27 #ifndef BFD_ASSEMBLER
  28
  29 #define WORKING_DOT_WORD
  30 #define WARN_SIGNED_OVERFLOW_WORD
  31 #define OBJ_COFF_OMIT_OPTIONAL_HEADER
  32 #define BFD_HEADERS
  33 #define BFD
  34
  35 #endif
  36
  37 #include "targ-cpu.h"
  38
  39 #include "bfd.h"
  40
  41 /* This internal_lineno crap is to stop namespace pollution from the
  42    bfd internal coff headerfile. */
  43 #define internal_lineno bfd_internal_lineno
  44 #include "coff/internal.h"
  45 #undef internal_lineno
  46
  47 /* CPU-specific setup:  */
  48
  49 #ifdef TC_ARM
  50 #include "coff/arm.h"
  51 #ifndef TARGET_FORMAT
  52 #define TARGET_FORMAT "coff-arm"
  53 #endif
  54 #endif
  55
  56 #ifdef TC_PPC
  57 #ifdef TE_PE
  58 #include "coff/powerpc.h"
  59 #else
  60 #include "coff/rs6000.h"
  61 #endif
  62 #endif
  63
  64 #ifdef TC_SPARC
  65 #include "coff/sparc.h"
  66 #endif
  67
  68 #ifdef TC_I386
  69 #include "coff/i386.h"
  70
  71 #ifdef TE_PE
  72 #define TARGET_FORMAT "pe-i386"
  73 #endif
  74
  75 #ifndef TARGET_FORMAT
  76 #define TARGET_FORMAT "coff-i386"
  77 #endif
  78 #endif
  79
  80 #ifdef TC_M68K
  81 #include "coff/m68k.h"
  82 #ifndef TARGET_FORMAT
  83 #define TARGET_FORMAT "coff-m68k"
  84 #endif
  85 #endif
  86
  87 #ifdef TC_A29K
  88 #include "coff/a29k.h"
  89 #define TARGET_FORMAT "coff-a29k-big"
  90 #endif
  91
  92 #ifdef TC_I960
  93 #include "coff/i960.h"
  94 #define TARGET_FORMAT "coff-Intel-little"
  95 #endif
  96
  97 #ifdef TC_Z8K
  98 #include "coff/z8k.h"
  99 #define TARGET_FORMAT "coff-z8k"
 100 #endif
 101
 102 #ifdef TC_H8300
 103 #include "coff/h8300.h"
 104 #define TARGET_FORMAT "coff-h8300"
 105 #endif
 106
 107 #ifdef TC_H8500
 108 #include "coff/h8500.h"
 109 #define TARGET_FORMAT "coff-h8500"
 110 #endif
 111
 112 #ifdef TC_SH
 113 #include "coff/sh.h"
 114 #define TARGET_FORMAT                                   \
 115   (shl                                                  \
 116    ? (sh_small ? "coff-shl-small" : "coff-shl")         \
 117    : (sh_small ? "coff-sh-small" : "coff-sh"))
 118 #endif
 119
 120 #ifdef TC_M88K
 121 #include "coff/m88k.h"
 122 #define TARGET_FORMAT "coff-m88kbcs"
 123 #endif
 124
 125 #ifdef TC_W65
 126 #include "coff/w65.h"
 127 #define TARGET_FORMAT "coff-w65"
 128 #endif
 129
 130 #ifdef TC_TIC30
 131 #include "coff/tic30.h"
 132 #define TARGET_FORMAT "coff-tic30"
 133 #endif
 134
 135 #ifdef TC_TIC80
 136 #include "coff/tic80.h"
 137 #define TARGET_FORMAT "coff-tic80"
 138 #define ALIGNMENT_IN_S_FLAGS 1
 139 #endif
 140
 141 #ifdef TC_MCORE
 142 #include "coff/mcore.h"
 143 #ifndef TARGET_FORMAT
 144 #define TARGET_FORMAT "pe-mcore"
 145 #endif
 146 #endif
 147
 148 /* Targets may also set this.  Also, if BFD_ASSEMBLER is defined, this
 149    will already have been defined.  */
 150 #undef SYMBOLS_NEED_BACKPOINTERS
 151 #define SYMBOLS_NEED_BACKPOINTERS 1
 152
 153 #ifndef OBJ_COFF_MAX_AUXENTRIES
 154 #define OBJ_COFF_MAX_AUXENTRIES 1
 155 #endif /* OBJ_COFF_MAX_AUXENTRIES */
 156
 157 extern void coff_obj_symbol_new_hook PARAMS ((struct symbol *));
 158 #define obj_symbol_new_hook coff_obj_symbol_new_hook
 159
 160 extern void coff_obj_read_begin_hook PARAMS ((void));
 161 #define obj_read_begin_hook coff_obj_read_begin_hook
 162
 163 /* ***********************************************************************
 164
 165    This file really contains two implementations of the COFF back end.
 166    They are in the process of being merged, but this is only a
 167    preliminary, mechanical merging.  Many definitions that are
 168    identical between the two are still found in both versions.
 169
 170    The first version, with BFD_ASSEMBLER defined, uses high-level BFD
 171    interfaces and data structures.  The second version, with
 172    BFD_ASSEMBLER not defined, also uses BFD, but mostly for swapping
 173    data structures and for doing the actual I/O.  The latter defines
 174    the preprocessor symbols BFD and BFD_HEADERS.  Try not to let this
 175    confuse you.
 176
 177    These two are in the process of being merged, and eventually the
 178    BFD_ASSEMBLER version should take over completely.  Release timing
 179    issues and namespace problems convinced me to merge the two
 180    together in this fashion, a little sooner than I would have liked.
 181    The real merge should be much better done by the time the next
 182    release comes out.
 183
 184    For now, the structure of this file is:
 185         <common>
 186         #ifdef BFD_ASSEMBLER
 187         <one version>
 188         #else
 189         <other version>
 190         #endif
 191         <common>
 192    Unfortunately, the common portions are very small at the moment,
 193    and many declarations or definitions are duplicated.  The structure
 194    of obj-coff.c is similar.
 195
 196    See doc/internals.texi for a brief discussion of the history, if
 197    you care.
 198
 199    Ken Raeburn, 5 May 1994
 200
 201    *********************************************************************** */
 202
 203 #ifdef BFD_ASSEMBLER
 204
 205 #include "bfd/libcoff.h"
 206
 207 #define OUTPUT_FLAVOR bfd_target_coff_flavour
 208
 209 /* SYMBOL TABLE */
 210
 211 /* Alter the field names, for now, until we've fixed up the other
 212    references to use the new name.  */
 213 #ifdef TC_I960
 214 #define TC_SYMFIELD_TYPE        struct symbol *
 215 #define sy_tc                   bal
 216 #endif
 217
 218 #define OBJ_SYMFIELD_TYPE       unsigned long
 219 #define sy_obj                  sy_flags
 220
 221 #define SYM_AUXENT(S)   (&coffsymbol ((S)->bsym)->native[1].u.auxent)
 222 #define SYM_AUXINFO(S)  (&coffsymbol ((S)->bsym)->native[1])
 223
 224 #define DO_NOT_STRIP    0
 225
 226 extern void obj_coff_section PARAMS ((int));
 227
 228 /* The number of auxiliary entries */
 229 #define S_GET_NUMBER_AUXILIARY(s)       (coffsymbol((s)->bsym)->native->u.syment.n_numaux)
 230 /* The number of auxiliary entries */
 231 #define S_SET_NUMBER_AUXILIARY(s,v)     (S_GET_NUMBER_AUXILIARY (s) = (v))
 232
 233 /* True if a symbol name is in the string table, i.e. its length is > 8. */
 234 #define S_IS_STRING(s)          (strlen(S_GET_NAME(s)) > 8 ? 1 : 0)
 235
 236 extern int S_SET_DATA_TYPE PARAMS ((struct symbol *, int));
 237 extern int S_SET_STORAGE_CLASS PARAMS ((struct symbol *, int));
 238 extern int S_GET_STORAGE_CLASS PARAMS ((struct symbol *));
 239 extern void SA_SET_SYM_ENDNDX PARAMS ((struct symbol *, struct symbol *));
 240
 241 /* Auxiliary entry macros. SA_ stands for symbol auxiliary */
 242 /* Omit the tv related fields */
 243 /* Accessors */
 244
 245 #define SA_GET_SYM_TAGNDX(s)    (SYM_AUXENT (s)->x_sym.x_tagndx.l)
 246 #define SA_GET_SYM_LNNO(s)      (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno)
 247 #define SA_GET_SYM_SIZE(s)      (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size)
 248 #define SA_GET_SYM_FSIZE(s)     (SYM_AUXENT (s)->x_sym.x_misc.x_fsize)
 249 #define SA_GET_SYM_LNNOPTR(s)   (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr)
 250 #define SA_GET_SYM_ENDNDX(s)    (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx)
 251 #define SA_GET_SYM_DIMEN(s,i)   (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)])
 252 #define SA_GET_FILE_FNAME(s)    (SYM_AUXENT (s)->x_file.x_fname)
 253 #define SA_GET_SCN_SCNLEN(s)    (SYM_AUXENT (s)->x_scn.x_scnlen)
 254 #define SA_GET_SCN_NRELOC(s)    (SYM_AUXENT (s)->x_scn.x_nreloc)
 255 #define SA_GET_SCN_NLINNO(s)    (SYM_AUXENT (s)->x_scn.x_nlinno)
 256
 257 #define SA_SET_SYM_LNNO(s,v)    (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno=(v))
 258 #define SA_SET_SYM_SIZE(s,v)    (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size=(v))
 259 #define SA_SET_SYM_FSIZE(s,v)   (SYM_AUXENT (s)->x_sym.x_misc.x_fsize=(v))
 260 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr=(v))
 261 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)]=(v))
 262 #define SA_SET_FILE_FNAME(s,v)  strncpy(SYM_AUXENT (s)->x_file.x_fname,(v),FILNMLEN)
 263 #define SA_SET_SCN_SCNLEN(s,v)  (SYM_AUXENT (s)->x_scn.x_scnlen=(v))
 264 #define SA_SET_SCN_NRELOC(s,v)  (SYM_AUXENT (s)->x_scn.x_nreloc=(v))
 265 #define SA_SET_SCN_NLINNO(s,v)  (SYM_AUXENT (s)->x_scn.x_nlinno=(v))
 266
 267 /*
 268  * Internal use only definitions. SF_ stands for symbol flags.
 269  *
 270  * These values can be assigned to sy_symbol.ost_flags field of a symbolS.
 271  *
 272  * You'll break i960 if you shift the SYSPROC bits anywhere else.  for
 273  * more on the balname/callname hack, see tc-i960.h.  b.out is done
 274  * differently.
 275  */
 276
 277 #define SF_I960_MASK    (0x000001ff)    /* Bits 0-8 are used by the i960 port. */
 278 #define SF_SYSPROC      (0x0000003f)    /* bits 0-5 are used to store the sysproc number */
 279 #define SF_IS_SYSPROC   (0x00000040)    /* bit 6 marks symbols that are sysprocs */
 280 #define SF_BALNAME      (0x00000080)    /* bit 7 marks BALNAME symbols */
 281 #define SF_CALLNAME     (0x00000100)    /* bit 8 marks CALLNAME symbols */
 282
 283 #define SF_NORMAL_MASK  (0x0000ffff)    /* bits 12-15 are general purpose. */
 284
 285 #define SF_STATICS      (0x00001000)    /* Mark the .text & all symbols */
 286 #define SF_DEFINED      (0x00002000)    /* Symbol is defined in this file */
 287 #define SF_STRING       (0x00004000)    /* Symbol name length > 8 */
 288 #define SF_LOCAL        (0x00008000)    /* Symbol must not be emitted */
 289
 290 #define SF_DEBUG_MASK   (0xffff0000)    /* bits 16-31 are debug info */
 291
 292 #define SF_FUNCTION     (0x00010000)    /* The symbol is a function */
 293 #define SF_PROCESS      (0x00020000)    /* Process symbol before write */
 294 #define SF_TAGGED       (0x00040000)    /* Is associated with a tag */
 295 #define SF_TAG          (0x00080000)    /* Is a tag */
 296 #define SF_DEBUG        (0x00100000)    /* Is in debug or abs section */
 297 #define SF_GET_SEGMENT  (0x00200000)    /* Get the section of the forward symbol. */
 298 /* All other bits are unused. */
 299
 300 /* Accessors */
 301 #define SF_GET(s)               ((s)->sy_flags)
 302 #define SF_GET_DEBUG(s)         ((s)->bsym->flags & BSF_DEBUGGING)
 303 #define SF_SET_DEBUG(s)         ((s)->bsym->flags |= BSF_DEBUGGING)
 304 #define SF_GET_NORMAL_FIELD(s)  (SF_GET (s) & SF_NORMAL_MASK)
 305 #define SF_GET_DEBUG_FIELD(s)   (SF_GET (s) & SF_DEBUG_MASK)
 306 #define SF_GET_FILE(s)          (SF_GET (s) & SF_FILE)
 307 #define SF_GET_STATICS(s)       (SF_GET (s) & SF_STATICS)
 308 #define SF_GET_DEFINED(s)       (SF_GET (s) & SF_DEFINED)
 309 #define SF_GET_STRING(s)        (SF_GET (s) & SF_STRING)
 310 #define SF_GET_LOCAL(s)         (SF_GET (s) & SF_LOCAL)
 311 #define SF_GET_FUNCTION(s)      (SF_GET (s) & SF_FUNCTION)
 312 #define SF_GET_PROCESS(s)       (SF_GET (s) & SF_PROCESS)
 313 #define SF_GET_TAGGED(s)        (SF_GET (s) & SF_TAGGED)
 314 #define SF_GET_TAG(s)           (SF_GET (s) & SF_TAG)
 315 #define SF_GET_GET_SEGMENT(s)   (SF_GET (s) & SF_GET_SEGMENT)
 316 #define SF_GET_I960(s)          (SF_GET (s) & SF_I960_MASK)     /* used by i960 */
 317 #define SF_GET_BALNAME(s)       (SF_GET (s) & SF_BALNAME)       /* used by i960 */
 318 #define SF_GET_CALLNAME(s)      (SF_GET (s) & SF_CALLNAME)      /* used by i960 */
 319 #define SF_GET_IS_SYSPROC(s)    (SF_GET (s) & SF_IS_SYSPROC)    /* used by i960 */
 320 #define SF_GET_SYSPROC(s)       (SF_GET (s) & SF_SYSPROC)       /* used by i960 */
 321
 322 /* Modifiers */
 323 #define SF_SET(s,v)             (SF_GET (s) = (v))
 324 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK))
 325 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK))
 326 #define SF_SET_FILE(s)          (SF_GET (s) |= SF_FILE)
 327 #define SF_SET_STATICS(s)       (SF_GET (s) |= SF_STATICS)
 328 #define SF_SET_DEFINED(s)       (SF_GET (s) |= SF_DEFINED)
 329 #define SF_SET_STRING(s)        (SF_GET (s) |= SF_STRING)
 330 #define SF_SET_LOCAL(s)         (SF_GET (s) |= SF_LOCAL)
 331 #define SF_CLEAR_LOCAL(s)       (SF_GET (s) &= ~SF_LOCAL)
 332 #define SF_SET_FUNCTION(s)      (SF_GET (s) |= SF_FUNCTION)
 333 #define SF_SET_PROCESS(s)       (SF_GET (s) |= SF_PROCESS)
 334 #define SF_SET_TAGGED(s)        (SF_GET (s) |= SF_TAGGED)
 335 #define SF_SET_TAG(s)           (SF_GET (s) |= SF_TAG)
 336 #define SF_SET_GET_SEGMENT(s)   (SF_GET (s) |= SF_GET_SEGMENT)
 337 #define SF_SET_I960(s,v)        (SF_GET (s) |= ((v) & SF_I960_MASK))    /* used by i960 */
 338 #define SF_SET_BALNAME(s)       (SF_GET (s) |= SF_BALNAME)      /* used by i960 */
 339 #define SF_SET_CALLNAME(s)      (SF_GET (s) |= SF_CALLNAME)     /* used by i960 */
 340 #define SF_SET_IS_SYSPROC(s)    (SF_GET (s) |= SF_IS_SYSPROC)   /* used by i960 */
 341 #define SF_SET_SYSPROC(s,v)     (SF_GET (s) |= ((v) & SF_SYSPROC))      /* used by i960 */
 342
 343 /* --------------  Line number handling ------- */
 344 extern int text_lineno_number;
 345 extern int coff_line_base;
 346 extern int coff_n_line_nos;
 347
 348 #define obj_emit_lineno(WHERE,LINE,FILE_START)  abort ()
 349 extern void coff_add_linesym PARAMS ((struct symbol *));
 350
 351
 352 void c_dot_file_symbol PARAMS ((char *filename));
 353 #define obj_app_file c_dot_file_symbol
 354
 355 extern void coff_frob_symbol PARAMS ((struct symbol *, int *));
 356 extern void coff_adjust_symtab PARAMS ((void));
 357 extern void coff_frob_section PARAMS ((segT));
 358 extern void coff_adjust_section_syms PARAMS ((bfd *, asection *, PTR));
 359 extern void coff_frob_file_after_relocs PARAMS ((void));
 360 #define obj_frob_symbol(S,P)    coff_frob_symbol(S,&P)
 361 #ifndef obj_adjust_symtab
 362 #define obj_adjust_symtab()     coff_adjust_symtab()
 363 #endif
 364 #define obj_frob_section(S)     coff_frob_section (S)
 365 #define obj_frob_file_after_relocs() coff_frob_file_after_relocs ()
 366
 367 extern struct symbol *coff_last_function;
 368
 369 /* Forward the segment of a forwarded symbol, handle assignments that
 370    just copy symbol values, etc.  */
 371 #ifndef TE_I386AIX
 372 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
 373   (SF_GET_GET_SEGMENT (dest) \
 374    ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
 375    : 0)
 376 #else
 377 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
 378   (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \
 379    ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
 380    : 0)
 381 #endif
 382
 383 /* sanity check */
 384
 385 #ifdef TC_I960
 386 #ifndef C_LEAFSTAT
 387 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it.
 388 #endif /* no C_LEAFSTAT */
 389 #endif /* TC_I960 */
 390
 391 #else /* not BFD_ASSEMBLER */
 392
 393 #ifdef TC_A29K
 394 /* Allow translate from aout relocs to coff relocs */
 395 #define NO_RELOC 20
 396 #define RELOC_32 1
 397 #define RELOC_8 2
 398 #define RELOC_CONST 3
 399 #define RELOC_CONSTH 4
 400 #define RELOC_JUMPTARG 5
 401 #define RELOC_BASE22 6
 402 #define RELOC_HI22 7
 403 #define RELOC_LO10 8
 404 #define RELOC_BASE13 9
 405 #define RELOC_WDISP22 10
 406 #define RELOC_WDISP30 11
 407 #endif
 408
 409 extern const segT N_TYPE_seg[];
 410
 411 /* Magic number of paged executable. */
 412 #define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE    0x8300
 413
 414
 415 /* SYMBOL TABLE */
 416
 417 /* Symbol table entry data type */
 418
 419 typedef struct
 420 {
 421   /* Basic symbol */
 422   struct internal_syment ost_entry;
 423   /* Auxiliary entry. */
 424   union internal_auxent ost_auxent[OBJ_COFF_MAX_AUXENTRIES];
 425   /* obj_coff internal use only flags */
 426   unsigned int ost_flags;
 427 } obj_symbol_type;
 428
 429 #ifndef DO_NOT_STRIP
 430 #define DO_NOT_STRIP    0
 431 #endif
 432 /* Symbol table macros and constants */
 433
 434 /* Possible and usefull section number in symbol table
 435  * The values of TEXT, DATA and BSS may not be portable.
 436  */
 437
 438 #define C_ABS_SECTION           N_ABS
 439 #define C_UNDEF_SECTION         N_UNDEF
 440 #define C_DEBUG_SECTION         N_DEBUG
 441 #define C_NTV_SECTION           N_TV
 442 #define C_PTV_SECTION           P_TV
 443 #define C_REGISTER_SECTION      50
 444
 445 /*
 446  *  Macros to extract information from a symbol table entry.
 447  *  This syntaxic indirection allows independence regarding a.out or coff.
 448  *  The argument (s) of all these macros is a pointer to a symbol table entry.
 449  */
 450
 451 /* Predicates */
 452 /* True if the symbol is external */
 453 #define S_IS_EXTERNAL(s)        ((s)->sy_symbol.ost_entry.n_scnum == C_UNDEF_SECTION)
 454 /* True if symbol has been defined, ie :
 455    section > 0 (DATA, TEXT or BSS)
 456    section == 0 and value > 0 (external bss symbol) */
 457 #define S_IS_DEFINED(s) \
 458   ((s)->sy_symbol.ost_entry.n_scnum > C_UNDEF_SECTION \
 459    || ((s)->sy_symbol.ost_entry.n_scnum == C_UNDEF_SECTION \
 460        && S_GET_VALUE (s) > 0) \
 461    || ((s)->sy_symbol.ost_entry.n_scnum == C_ABS_SECTION))
 462 /* True if a debug special symbol entry */
 463 #define S_IS_DEBUG(s)           ((s)->sy_symbol.ost_entry.n_scnum == C_DEBUG_SECTION)
 464 /* True if a symbol is local symbol name */
 465 /* A symbol name whose name includes ^A is a gas internal pseudo symbol */
 466 #define S_IS_LOCAL(s) \
 467   ((s)->sy_symbol.ost_entry.n_scnum == C_REGISTER_SECTION \
 468    || (S_LOCAL_NAME(s) && ! flag_keep_locals && ! S_IS_DEBUG (s)) \
 469    || strchr (S_GET_NAME (s), '\001') != NULL \
 470    || strchr (S_GET_NAME (s), '\002') != NULL \
 471    || (flag_strip_local_absolute \
 472        && !S_IS_EXTERNAL(s) \
 473        && (s)->sy_symbol.ost_entry.n_scnum == C_ABS_SECTION))
 474 /* True if a symbol is not defined in this file */
 475 #define S_IS_EXTERN(s)          ((s)->sy_symbol.ost_entry.n_scnum == 0 \
 476                                  && S_GET_VALUE (s) == 0)
 477 /*
 478  * True if a symbol can be multiply defined (bss symbols have this def
 479  * though it is bad practice)
 480  */
 481 #define S_IS_COMMON(s)          ((s)->sy_symbol.ost_entry.n_scnum == 0 \
 482                                  && S_GET_VALUE (s) != 0)
 483 /* True if a symbol name is in the string table, i.e. its length is > 8. */
 484 #define S_IS_STRING(s)          (strlen(S_GET_NAME(s)) > 8 ? 1 : 0)
 485
 486 /* True if a symbol is defined as weak.  */
 487 #ifdef TE_PE
 488 #define S_IS_WEAK(s) \
 489   ((s)->sy_symbol.ost_entry.n_sclass == C_NT_WEAK \
 490    || (s)->sy_symbol.ost_entry.n_sclass == C_WEAKEXT)
 491 #else
 492 #define S_IS_WEAK(s) \
 493   ((s)->sy_symbol.ost_entry.n_sclass == C_WEAKEXT)
 494 #endif
 495
 496 /* Accessors */
 497 /* The name of the symbol */
 498 #define S_GET_NAME(s)           ((char*)(s)->sy_symbol.ost_entry.n_offset)
 499 /* The pointer to the string table */
 500 #define S_GET_OFFSET(s)         ((s)->sy_symbol.ost_entry.n_offset)
 501 /* The numeric value of the segment */
 502 #define S_GET_SEGMENT(s)   s_get_segment(s)
 503 /* The data type */
 504 #define S_GET_DATA_TYPE(s)      ((s)->sy_symbol.ost_entry.n_type)
 505 /* The storage class */
 506 #define S_GET_STORAGE_CLASS(s)  ((s)->sy_symbol.ost_entry.n_sclass)
 507 /* The number of auxiliary entries */
 508 #define S_GET_NUMBER_AUXILIARY(s)       ((s)->sy_symbol.ost_entry.n_numaux)
 509
 510 /* Modifiers */
 511 /* Set the name of the symbol */
 512 #define S_SET_NAME(s,v)         ((s)->sy_symbol.ost_entry.n_offset = (unsigned long)(v))
 513 /* Set the offset of the symbol */
 514 #define S_SET_OFFSET(s,v)       ((s)->sy_symbol.ost_entry.n_offset = (v))
 515 /* The numeric value of the segment */
 516 #define S_SET_SEGMENT(s,v)      ((s)->sy_symbol.ost_entry.n_scnum = SEGMENT_TO_SYMBOL_TYPE(v))
 517 /* The data type */
 518 #define S_SET_DATA_TYPE(s,v)    ((s)->sy_symbol.ost_entry.n_type = (v))
 519 /* The storage class */
 520 #define S_SET_STORAGE_CLASS(s,v)        ((s)->sy_symbol.ost_entry.n_sclass = (v))
 521 /* The number of auxiliary entries */
 522 #define S_SET_NUMBER_AUXILIARY(s,v)     ((s)->sy_symbol.ost_entry.n_numaux = (v))
 523
 524 /* Additional modifiers */
 525 /* The symbol is external (does not mean undefined) */
 526 #define S_SET_EXTERNAL(s)       { S_SET_STORAGE_CLASS(s, C_EXT) ; SF_CLEAR_LOCAL(s); }
 527
 528 /* Auxiliary entry macros. SA_ stands for symbol auxiliary */
 529 /* Omit the tv related fields */
 530 /* Accessors */
 531 #define SYM_AUXENT(S)   (&(S)->sy_symbol.ost_auxent[0])
 532
 533 #define SA_GET_SYM_TAGNDX(s)    (SYM_AUXENT (s)->x_sym.x_tagndx.l)
 534 #define SA_GET_SYM_LNNO(s)      (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno)
 535 #define SA_GET_SYM_SIZE(s)      (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size)
 536 #define SA_GET_SYM_FSIZE(s)     (SYM_AUXENT (s)->x_sym.x_misc.x_fsize)
 537 #define SA_GET_SYM_LNNOPTR(s)   (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr)
 538 #define SA_GET_SYM_ENDNDX(s)    (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx.l)
 539 #define SA_GET_SYM_DIMEN(s,i)   (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)])
 540 #define SA_GET_FILE_FNAME(s)    (SYM_AUXENT (s)->x_file.x_fname)
 541 #define SA_GET_FILE_FNAME_OFFSET(s)  (SYM_AUXENT (s)->x_file.x_n.x_offset)
 542 #define SA_GET_FILE_FNAME_ZEROS(s)   (SYM_AUXENT (s)->x_file.x_n.x_zeroes)
 543 #define SA_GET_SCN_SCNLEN(s)    (SYM_AUXENT (s)->x_scn.x_scnlen)
 544 #define SA_GET_SCN_NRELOC(s)    (SYM_AUXENT (s)->x_scn.x_nreloc)
 545 #define SA_GET_SCN_NLINNO(s)    (SYM_AUXENT (s)->x_scn.x_nlinno)
 546
 547 /* Modifiers */
 548 #define SA_SET_SYM_TAGNDX(s,v)  (SYM_AUXENT (s)->x_sym.x_tagndx.l=(v))
 549 #define SA_SET_SYM_LNNO(s,v)    (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno=(v))
 550 #define SA_SET_SYM_SIZE(s,v)    (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size=(v))
 551 #define SA_SET_SYM_FSIZE(s,v)   (SYM_AUXENT (s)->x_sym.x_misc.x_fsize=(v))
 552 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr=(v))
 553 #define SA_SET_SYM_ENDNDX(s,v)  (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx.l=(v))
 554 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)]=(v))
 555 #define SA_SET_FILE_FNAME(s,v)  strncpy(SYM_AUXENT (s)->x_file.x_fname,(v),FILNMLEN)
 556 #define SA_SET_FILE_FNAME_OFFSET(s,v) (SYM_AUXENT (s)->x_file.x_n.x_offset=(v))
 557 #define SA_SET_FILE_FNAME_ZEROS(s,v)  (SYM_AUXENT (s)->x_file.x_n.x_zeroes=(v))
 558 #define SA_SET_SCN_SCNLEN(s,v)  (SYM_AUXENT (s)->x_scn.x_scnlen=(v))
 559 #define SA_SET_SCN_NRELOC(s,v)  (SYM_AUXENT (s)->x_scn.x_nreloc=(v))
 560 #define SA_SET_SCN_NLINNO(s,v)  (SYM_AUXENT (s)->x_scn.x_nlinno=(v))
 561
 562 /*
 563  * Internal use only definitions. SF_ stands for symbol flags.
 564  *
 565  * These values can be assigned to sy_symbol.ost_flags field of a symbolS.
 566  *
 567  * You'll break i960 if you shift the SYSPROC bits anywhere else.  for
 568  * more on the balname/callname hack, see tc-i960.h.  b.out is done
 569  * differently.
 570  */
 571
 572 #define SF_I960_MASK    (0x000001ff)    /* Bits 0-8 are used by the i960 port. */
 573 #define SF_SYSPROC      (0x0000003f)    /* bits 0-5 are used to store the sysproc number */
 574 #define SF_IS_SYSPROC   (0x00000040)    /* bit 6 marks symbols that are sysprocs */
 575 #define SF_BALNAME      (0x00000080)    /* bit 7 marks BALNAME symbols */
 576 #define SF_CALLNAME     (0x00000100)    /* bit 8 marks CALLNAME symbols */
 577
 578 #define SF_NORMAL_MASK  (0x0000ffff)    /* bits 12-15 are general purpose. */
 579
 580 #define SF_STATICS      (0x00001000)    /* Mark the .text & all symbols */
 581 #define SF_DEFINED      (0x00002000)    /* Symbol is defined in this file */
 582 #define SF_STRING       (0x00004000)    /* Symbol name length > 8 */
 583 #define SF_LOCAL        (0x00008000)    /* Symbol must not be emitted */
 584
 585 #define SF_DEBUG_MASK   (0xffff0000)    /* bits 16-31 are debug info */
 586
 587 #define SF_FUNCTION     (0x00010000)    /* The symbol is a function */
 588 #define SF_PROCESS      (0x00020000)    /* Process symbol before write */
 589 #define SF_TAGGED       (0x00040000)    /* Is associated with a tag */
 590 #define SF_TAG          (0x00080000)    /* Is a tag */
 591 #define SF_DEBUG        (0x00100000)    /* Is in debug or abs section */
 592 #define SF_GET_SEGMENT  (0x00200000)    /* Get the section of the forward symbol. */
 593 #define SF_ADJ_LNNOPTR  (0x00400000)    /* Has a lnnoptr */
 594 /* All other bits are unused. */
 595
 596 /* Accessors */
 597 #define SF_GET(s)               ((s)->sy_symbol.ost_flags)
 598 #define SF_GET_NORMAL_FIELD(s)  (SF_GET (s) & SF_NORMAL_MASK)
 599 #define SF_GET_DEBUG_FIELD(s)   (SF_GET (s) & SF_DEBUG_MASK)
 600 #define SF_GET_FILE(s)          (SF_GET (s) & SF_FILE)
 601 #define SF_GET_STATICS(s)       (SF_GET (s) & SF_STATICS)
 602 #define SF_GET_DEFINED(s)       (SF_GET (s) & SF_DEFINED)
 603 #define SF_GET_STRING(s)        (SF_GET (s) & SF_STRING)
 604 #define SF_GET_LOCAL(s)         (SF_GET (s) & SF_LOCAL)
 605 #define SF_GET_FUNCTION(s)      (SF_GET (s) & SF_FUNCTION)
 606 #define SF_GET_PROCESS(s)       (SF_GET (s) & SF_PROCESS)
 607 #define SF_GET_DEBUG(s)         (SF_GET (s) & SF_DEBUG)
 608 #define SF_GET_TAGGED(s)        (SF_GET (s) & SF_TAGGED)
 609 #define SF_GET_TAG(s)           (SF_GET (s) & SF_TAG)
 610 #define SF_GET_GET_SEGMENT(s)   (SF_GET (s) & SF_GET_SEGMENT)
 611 #define SF_GET_ADJ_LNNOPTR(s)   (SF_GET (s) & SF_ADJ_LNNOPTR)
 612 #define SF_GET_I960(s)          (SF_GET (s) & SF_I960_MASK)     /* used by i960 */
 613 #define SF_GET_BALNAME(s)       (SF_GET (s) & SF_BALNAME)       /* used by i960 */
 614 #define SF_GET_CALLNAME(s)      (SF_GET (s) & SF_CALLNAME)      /* used by i960 */
 615 #define SF_GET_IS_SYSPROC(s)    (SF_GET (s) & SF_IS_SYSPROC)    /* used by i960 */
 616 #define SF_GET_SYSPROC(s)       (SF_GET (s) & SF_SYSPROC)       /* used by i960 */
 617
 618 /* Modifiers */
 619 #define SF_SET(s,v)             (SF_GET (s) = (v))
 620 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK))
 621 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK))
 622 #define SF_SET_FILE(s)          (SF_GET (s) |= SF_FILE)
 623 #define SF_SET_STATICS(s)       (SF_GET (s) |= SF_STATICS)
 624 #define SF_SET_DEFINED(s)       (SF_GET (s) |= SF_DEFINED)
 625 #define SF_SET_STRING(s)        (SF_GET (s) |= SF_STRING)
 626 #define SF_SET_LOCAL(s)         (SF_GET (s) |= SF_LOCAL)
 627 #define SF_CLEAR_LOCAL(s)       (SF_GET (s) &= ~SF_LOCAL)
 628 #define SF_SET_FUNCTION(s)      (SF_GET (s) |= SF_FUNCTION)
 629 #define SF_SET_PROCESS(s)       (SF_GET (s) |= SF_PROCESS)
 630 #define SF_SET_DEBUG(s)         (SF_GET (s) |= SF_DEBUG)
 631 #define SF_SET_TAGGED(s)        (SF_GET (s) |= SF_TAGGED)
 632 #define SF_SET_TAG(s)           (SF_GET (s) |= SF_TAG)
 633 #define SF_SET_GET_SEGMENT(s)   (SF_GET (s) |= SF_GET_SEGMENT)
 634 #define SF_SET_ADJ_LNNOPTR(s)   (SF_GET (s) |= SF_ADJ_LNNOPTR)
 635 #define SF_SET_I960(s,v)        (SF_GET (s) |= ((v) & SF_I960_MASK))    /* used by i960 */
 636 #define SF_SET_BALNAME(s)       (SF_GET (s) |= SF_BALNAME)      /* used by i960 */
 637 #define SF_SET_CALLNAME(s)      (SF_GET (s) |= SF_CALLNAME)     /* used by i960 */
 638 #define SF_SET_IS_SYSPROC(s)    (SF_GET (s) |= SF_IS_SYSPROC)   /* used by i960 */
 639 #define SF_SET_SYSPROC(s,v)     (SF_GET (s) |= ((v) & SF_SYSPROC))      /* used by i960 */
 640
 641 /* File header macro and type definition */
 642
 643 /*
 644  * File position calculators. Beware to use them when all the
 645  * appropriate fields are set in the header.
 646  */
 647
 648 #ifdef OBJ_COFF_OMIT_OPTIONAL_HEADER
 649 #define OBJ_COFF_AOUTHDRSZ (0)
 650 #else
 651 #define OBJ_COFF_AOUTHDRSZ (AOUTHDRSZ)
 652 #endif /* OBJ_COFF_OMIT_OPTIONAL_HEADER */
 653
 654 #define H_GET_FILE_SIZE(h) \
 655     (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
 656            H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
 657            H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h) + \
 658            H_GET_RELOCATION_SIZE(h) + H_GET_LINENO_SIZE(h) + \
 659            H_GET_SYMBOL_TABLE_SIZE(h) + \
 660            (h)->string_table_size)
 661 #define H_GET_TEXT_FILE_OFFSET(h) \
 662     (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
 663            H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ)
 664 #define H_GET_DATA_FILE_OFFSET(h) \
 665     (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
 666            H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
 667            H_GET_TEXT_SIZE(h))
 668 #define H_GET_BSS_FILE_OFFSET(h) 0
 669 #define H_GET_RELOCATION_FILE_OFFSET(h) \
 670     (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
 671            H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
 672            H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h))
 673 #define H_GET_LINENO_FILE_OFFSET(h) \
 674     (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
 675            H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
 676            H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h) + \
 677            H_GET_RELOCATION_SIZE(h))
 678 #define H_GET_SYMBOL_TABLE_FILE_OFFSET(h) \
 679     (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
 680            H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
 681            H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h) + \
 682            H_GET_RELOCATION_SIZE(h) + H_GET_LINENO_SIZE(h))
 683
 684 /* Accessors */
 685 /* aouthdr */
 686 #define H_GET_MAGIC_NUMBER(h)           ((h)->aouthdr.magic)
 687 #define H_GET_VERSION_STAMP(h)          ((h)->aouthdr.vstamp)
 688 #define H_GET_TEXT_SIZE(h)              ((h)->aouthdr.tsize)
 689 #define H_GET_DATA_SIZE(h)              ((h)->aouthdr.dsize)
 690 #define H_GET_BSS_SIZE(h)               ((h)->aouthdr.bsize)
 691 #define H_GET_ENTRY_POINT(h)            ((h)->aouthdr.entry)
 692 #define H_GET_TEXT_START(h)             ((h)->aouthdr.text_start)
 693 #define H_GET_DATA_START(h)             ((h)->aouthdr.data_start)
 694 /* filehdr */
 695 #define H_GET_FILE_MAGIC_NUMBER(h)      ((h)->filehdr.f_magic)
 696 #define H_GET_NUMBER_OF_SECTIONS(h)     ((h)->filehdr.f_nscns)
 697 #define H_GET_TIME_STAMP(h)             ((h)->filehdr.f_timdat)
 698 #define H_GET_SYMBOL_TABLE_POINTER(h)   ((h)->filehdr.f_symptr)
 699 #define H_GET_SYMBOL_COUNT(h)           ((h)->filehdr.f_nsyms)
 700 #define H_GET_SYMBOL_TABLE_SIZE(h)      (H_GET_SYMBOL_COUNT(h) * SYMESZ)
 701 #define H_GET_SIZEOF_OPTIONAL_HEADER(h) ((h)->filehdr.f_opthdr)
 702 #define H_GET_FLAGS(h)                  ((h)->filehdr.f_flags)
 703 /* Extra fields to achieve bsd a.out compatibility and for convenience */
 704 #define H_GET_RELOCATION_SIZE(h)        ((h)->relocation_size)
 705 #define H_GET_STRING_SIZE(h)            ((h)->string_table_size)
 706 #define H_GET_LINENO_SIZE(h)            ((h)->lineno_size)
 707
 708 #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
 709 #define H_GET_HEADER_SIZE(h)            (sizeof(FILHDR) \
 710                                          + sizeof(AOUTHDR)\
 711                                          + (H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ))
 712 #else /* OBJ_COFF_OMIT_OPTIONAL_HEADER */
 713 #define H_GET_HEADER_SIZE(h)            (sizeof(FILHDR) \
 714                                          + (H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ))
 715 #endif /* OBJ_COFF_OMIT_OPTIONAL_HEADER */
 716
 717 #define H_GET_TEXT_RELOCATION_SIZE(h)   (text_section_header.s_nreloc * RELSZ)
 718 #define H_GET_DATA_RELOCATION_SIZE(h)   (data_section_header.s_nreloc * RELSZ)
 719
 720 /* Modifiers */
 721 /* aouthdr */
 722 #define H_SET_MAGIC_NUMBER(h,v)         ((h)->aouthdr.magic = (v))
 723 #define H_SET_VERSION_STAMP(h,v)        ((h)->aouthdr.vstamp = (v))
 724 #define H_SET_TEXT_SIZE(h,v)            ((h)->aouthdr.tsize = (v))
 725 #define H_SET_DATA_SIZE(h,v)            ((h)->aouthdr.dsize = (v))
 726 #define H_SET_BSS_SIZE(h,v)             ((h)->aouthdr.bsize = (v))
 727 #define H_SET_ENTRY_POINT(h,v)          ((h)->aouthdr.entry = (v))
 728 #define H_SET_TEXT_START(h,v)           ((h)->aouthdr.text_start = (v))
 729 #define H_SET_DATA_START(h,v)           ((h)->aouthdr.data_start = (v))
 730 /* filehdr */
 731 #define H_SET_FILE_MAGIC_NUMBER(h,v)    ((h)->filehdr.f_magic = (v))
 732 #define H_SET_NUMBER_OF_SECTIONS(h,v)   ((h)->filehdr.f_nscns = (v))
 733 #define H_SET_TIME_STAMP(h,v)           ((h)->filehdr.f_timdat = (v))
 734 #define H_SET_SYMBOL_TABLE_POINTER(h,v) ((h)->filehdr.f_symptr = (v))
 735 #define H_SET_SYMBOL_TABLE_SIZE(h,v)    ((h)->filehdr.f_nsyms = (v))
 736 #define H_SET_SIZEOF_OPTIONAL_HEADER(h,v) ((h)->filehdr.f_opthdr = (v))
 737 #define H_SET_FLAGS(h,v)                ((h)->filehdr.f_flags = (v))
 738 /* Extra fields to achieve bsd a.out compatibility and for convinience */
 739 #define H_SET_RELOCATION_SIZE(h,t,d)    ((h)->relocation_size = (t)+(d))
 740 #define H_SET_STRING_SIZE(h,v)          ((h)->string_table_size = (v))
 741 #define H_SET_LINENO_SIZE(h,v)          ((h)->lineno_size = (v))
 742
 743 /* Segment flipping */
 744
 745 typedef struct
 746 {
 747   struct internal_aouthdr aouthdr;      /* a.out header */
 748   struct internal_filehdr filehdr;      /* File header, not machine dep. */
 749   long string_table_size;       /* names + '\0' + sizeof(int) */
 750   long relocation_size; /* Cumulated size of relocation
 751                            information for all sections in
 752                            bytes. */
 753   long lineno_size;             /* Size of the line number information
 754                                    table in bytes */
 755 } object_headers;
 756
 757
 758
 759 struct lineno_list
 760 {
 761   struct bfd_internal_lineno line;
 762   char *frag;                   /* Frag to which the line number is related */
 763   struct lineno_list *next;     /* Forward chain pointer */
 764 };
 765
 766
 767
 768
 769 #define obj_segment_name(i) (segment_info[(int) (i)].scnhdr.s_name)
 770
 771 #define obj_add_segment(s) obj_coff_add_segment (s)
 772
 773 extern segT obj_coff_add_segment PARAMS ((const char *));
 774
 775 extern void obj_coff_section PARAMS ((int));
 776
 777 extern void c_dot_file_symbol PARAMS ((char *filename));
 778 #define obj_app_file c_dot_file_symbol
 779 extern void obj_extra_stuff PARAMS ((object_headers * headers));
 780
 781 extern segT s_get_segment PARAMS ((struct symbol * ptr));
 782
 783 extern void c_section_header PARAMS ((struct internal_scnhdr * header,
 784                                       char *name,
 785                                       long core_address,
 786                                       long size,
 787                                       long data_ptr,
 788                                       long reloc_ptr,
 789                                       long lineno_ptr,
 790                                       long reloc_number,
 791                                       long lineno_number,
 792                                       long alignment));
 793
 794 #ifndef tc_coff_symbol_emit_hook
 795 void tc_coff_symbol_emit_hook PARAMS ((struct symbol *));
 796 #endif
 797
 798 /* sanity check */
 799
 800 #ifdef TC_I960
 801 #ifndef C_LEAFSTAT
 802 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it.
 803 #endif /* no C_LEAFSTAT */
 804 #endif /* TC_I960 */
 805 extern struct internal_scnhdr data_section_header;
 806 extern struct internal_scnhdr text_section_header;
 807
 808 /* Forward the segment of a forwarded symbol.  */
 809 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
 810   (SF_GET_GET_SEGMENT (dest) \
 811    ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
 812    : 0)
 813
 814 #ifdef TE_PE
 815 #define obj_handle_link_once(t) obj_coff_pe_handle_link_once (t)
 816 extern void obj_coff_pe_handle_link_once ();
 817 #endif
 818
 819 #endif /* not BFD_ASSEMBLER */
 820
 821 /* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK
 822    to redefine the symbol later on.  This can happen if C symbols use
 823    a prefix, and a symbol is defined both with and without the prefix,
 824    as in start/_start/__start in gcc/libgcc1-test.c.  */
 825 #define RESOLVE_SYMBOL_REDEFINITION(sym)                \
 826 (SF_GET_GET_SEGMENT (sym)                               \
 827  ? (sym->sy_frag = frag_now,                            \
 828     S_SET_VALUE (sym, frag_now_fix ()),                 \
 829     S_SET_SEGMENT (sym, now_seg),                       \
 830     0)                                                  \
 831  : 0)
 832
 833 /* Stabs in a coff file go into their own section.  */
 834 #define SEPARATE_STAB_SECTIONS 1
 835
 836 /* We need 12 bytes at the start of the section to hold some initial
 837    information.  */
 838 extern void obj_coff_init_stab_section PARAMS ((segT));
 839 #define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg)
 840
 841 #endif /* OBJ_FORMAT_H */