gas/config/coff_gnu.h

   1 /* coff_gnu.h
   2    Copyright (C) 1987, 1992 Free Software Foundation, Inc.
   3
   4    This file is part of GAS, the GNU Assembler.
   5
   6    GAS is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    GAS is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GAS; see the file COPYING.  If not, write to
  18    the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /*
  21  * At this point I'm sure this file is right for i960 and I'm pretty sure it's
  22  * right for a29k, although it hasn't been tested rigorously.  Please feel free
  23  * to add your own machine's description here.  Without that info, it isn't
  24  * possible to build cross development tools from elsewhere nor is it easy to
  25  * continue to support your machines format.
  26  *
  27  * The TC_foo ifdef's are mine.  They are what gas uses.  The other ifdef's
  28  * remain for documentation from other scavenged files.   xoxorich.
  29  */
  30
  31 /********************** FILE HEADER **********************/
  32
  33 struct filehdr
  34   {
  35     unsigned short f_magic;     /* magic number                 */
  36     unsigned short f_nscns;     /* number of sections           */
  37     long f_timdat;              /* time & date stamp            */
  38     long f_symptr;              /* file pointer to symtab       */
  39     long f_nsyms;               /* number of symtab entries     */
  40     unsigned short f_opthdr;    /* sizeof(optional hdr)         */
  41     unsigned short f_flags;     /* flags                        */
  42   };
  43
  44 /* Bits for f_flags:
  45  *      F_RELFLG        relocation info stripped from file
  46  *      F_EXEC          file is executable (no unresolved externel references)
  47  *      F_LNNO          line nunbers stripped from file
  48  *      F_LSYMS         local symbols stripped from file
  49  *      F_AR32WR        file has byte ordering of an AR32WR machine (e.g. vax)
  50  */
  51 #define F_RELFLG        (0x0001)
  52 #define F_EXEC          (0x0002)
  53 #define F_LNNO          (0x0004)
  54 #define F_LSYMS         (0x0008)
  55
  56 #ifdef TC_I960
  57 #define F_AR32WR        (0x0010)/* File has 32 bits per word, least
  58                                     significant byte first. */
  59 #else /* TC_I960 */
  60 #define F_AR32WR        (0x0100)
  61 #endif /* TC_I960 */
  62
  63 #define F_MINMAL        (0x0010)/* ??? */
  64 #define F_UPDATE        (0x0020)/* ??? */
  65 #define F_SWABD         (0x0040)/* ??? */
  66 #define F_AR16WR        (0x0080)/* File has the byte ordering used by
  67                                     the PDP*-11/70 processor. */
  68 #define F_AR32W         (0x0200)/* File has 32 bits per word, most
  69                                     significant byte first. */
  70
  71 /*
  72  *      Intel 80960 (I960) processor flags.
  73  *      F_I960TYPE == mask for processor type field.
  74  */
  75
  76 #define F_I960TYPE      (0xf000)
  77 #define F_I960CORE      (0x1000)
  78 #define F_I960KB        (0x2000)
  79 #define F_I960SB        (0x2000)
  80 #define F_I960MC        (0x3000)
  81 #define F_I960XA        (0x4000)
  82 #define F_I960CA        (0x5000)
  83 #define F_I960KA        (0x6000)
  84 #define F_I960SA        (0x6000)
  85
  86 /*
  87  * i80960 Magic Numbers
  88  */
  89
  90 #define I960ROMAGIC     (0x160) /* read-only text segments */
  91 #define I960RWMAGIC     (0x161) /* read-write text segments */
  92
  93 #define I960BADMAG(x) (((x).f_magic != I960ROMAGIC) && ((x).f_magic != I960RWMAGIC))
  94
  95 #define SIPFBOMAGIC     (0x17a) /* Am29000 (Byte 0 is MSB - Big Endian) */
  96 #define SIPRBOMAGIC     (0x17b) /* Am29000 (Byte 0 is LSB - Little Endian) */
  97
  98 #define A29KBADMAG(x)   (((x).f_magic != SIPFBOMAGIC) && ((x).f_magic != SIPRBOMAGIC))
  99
 100 #ifdef TE_I386AIX
 101 # define I386MAGIC      (0x175) /* Danbury AIX C compiler       */
 102 # define I386SVMAGIC    (0x14c) /* System V C Compiler          */
 103 # define I386BADMAG(x)  (((x).f_magic!=I386MAGIC) && \
 104                          ((x).f_magic!=I386SVMAGIC))
 105 #else /* not TE_I386AIX */
 106 # define I386MAGIC      0x14c
 107 # define I386BADMAG(x) (((x).f_magic!=I386MAGIC))
 108 #endif /* not TE_I386AIX */
 109
 110
 111 #define FILHDR  struct filehdr
 112 #define FILHSZ  sizeof(FILHDR)
 113
 114
 115 /********************** AOUT "OPTIONAL HEADER" **********************/
 116
 117 typedef struct
 118   {
 119     unsigned long phys_addr;
 120     unsigned long bitarray;
 121   }
 122
 123 TAGBITS;
 124
 125 /*  These appear to be used only by exec(2).  I don't know who cares
 126     about them in a cross development environment.  In any case, this
 127     is my collection after researching the issue for a few hours.
 128     Apparently, most have these have remained essentially unchanged
 129     since v7 days, although a few new ones have been added.  xoxorich. */
 130
 131 #define BAD0MAGIC       (0401)  /* (?) "lpd (UNIX/RT)" */
 132 #define BAD1MAGIC       (0405)  /* (?) overlay */
 133 #define OMAGIC          (0407)  /* old impure format. data immediately
 134                                   follows text. both sections are rw. */
 135 #define NMAGIC          (0410)  /* split i&d, read-only text */
 136 #define A_MAGIC3        (0411)  /* (?) "separated I&D" */
 137 #define ZMAGIC          (0413)  /* like NMAGIC, but demand loaded */
 138 #define PAGEMAGIC2      (0414)  /* (?) like ZMAGIC, but address zero
 139                                   explicitly unmapped. */
 140 #define REGMAGIC        (0414)  /* (?) a PAGEMAGIC2 alias? */
 141 #define PAGEMAGIC3      (0415)  /* (?) like ZMAGIC, but address zero mapped. */
 142 #define A_MAGIC5        (0437)  /* (?) "system overlay, separated I&D" */
 143 /* intended for non-unix cross development */
 144 #define SASMAGIC        (010000)/* Single Address Space */
 145 #define MASMAGIC        (020000)/* (?) "Multiple (separate I & D) Address Spaces" */
 146
 147 typedef struct aouthdr
 148   {
 149     short magic;                /* type of file                         */
 150     short vstamp;               /* version stamp                        */
 151     unsigned long tsize;        /* text size in bytes, padded to FW bdry*/
 152     unsigned long dsize;        /* initialized data "  "                */
 153     unsigned long bsize;        /* uninitialized data "   "             */
 154 #if U3B
 155     unsigned long dum1;
 156     unsigned long dum2;         /* pad to entry point   */
 157 #endif
 158     unsigned long entry;        /* entry pt.                            */
 159     unsigned long text_start;   /* base of text used for this file */
 160     unsigned long data_start;   /* base of data used for this file */
 161     /* CAREFUL: some formats omit the tagentries member. */
 162     unsigned long tagentries;   /* number of tag entries to
 163                                            follow (always zero for i960) */
 164   }
 165
 166 AOUTHDR;
 167
 168 /* return a pointer to the tag bits array */
 169
 170 #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1))
 171
 172 /* compute size of a header */
 173
 174 /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/
 175 #define AOUTSZ (sizeof(AOUTHDR))
 176
 177
 178 /********************** STORAGE CLASSES **********************/
 179
 180 #define C_EFCN          -1      /* physical end of function */
 181 #define C_NULL          0
 182 #define C_AUTO          1       /* automatic variable */
 183 #define C_EXT           2       /* external symbol */
 184 #define C_STAT          3       /* static */
 185 #define C_REG           4       /* register variable */
 186 #define C_EXTDEF        5       /* external definition */
 187 #define C_LABEL         6       /* label */
 188 #define C_ULABEL        7       /* undefined label */
 189 #define C_MOS           8       /* member of structure */
 190 #define C_ARG           9       /* function argument */
 191 #define C_STRTAG        10      /* structure tag */
 192 #define C_MOU           11      /* member of union */
 193 #define C_UNTAG         12      /* union tag */
 194 #define C_TPDEF         13      /* type definition */
 195 #define C_USTATIC       14      /* undefined static */
 196 #define C_ENTAG         15      /* enumeration tag */
 197 #define C_MOE           16      /* member of enumeration */
 198 #define C_REGPARM       17      /* register parameter */
 199 #define C_FIELD         18      /* bit field */
 200
 201 #ifdef TC_I960
 202 #define C_AUTOARG       19      /* auto argument */
 203 #define C_LASTENT       20      /* dummy entry (end of block) */
 204 #endif /* TC_I960 */
 205
 206 #ifdef TC_A29K
 207 #define C_GLBLREG       19      /* global register */
 208 #define C_EXTREG        20      /* external global register */
 209 #define C_DEFREG        21      /* ext. def. of global register */
 210 #define C_STARTOF       22      /* as29 $SIZEOF and $STARTOF symbols */
 211 #endif /* TC_A29K */
 212
 213 #define C_BLOCK         100     /* ".bb" or ".eb" */
 214 #define C_FCN           101     /* ".bf" or ".ef" */
 215 #define C_EOS           102     /* end of structure */
 216 #define C_FILE          103     /* file name */
 217 #define C_LINE          104     /* line # reformatted as symbol table entry */
 218 #define C_ALIAS         105     /* duplicate tag */
 219 #define C_HIDDEN        106     /* ext symbol in dmert public lib. like static,
 220                                    used to avoid name conflicts. */
 221
 222 #ifdef TC_I960
 223 /* New storage classes for 80960 */
 224 #define C_SCALL         107     /* Procedure reachable via system call  */
 225 /* C_LEAFPROC is obsolete.  Use C_LEAFEXT or C_LEAFSTAT */
 226 #define C_LEAFPROC      108     /* Leaf procedure, "call" via BAL */
 227 #define C_LEAFEXT       108
 228 #define C_OPTVAR        109     /* Optimized variable */
 229 #define C_DEFINE        110     /* Preprocessor #define */
 230 #define C_PRAGMA        111     /* Advice to compiler or linker */
 231 #define C_SEGMENT       112     /* 80960 segment name */
 232 #define C_LEAFSTAT      113     /* Static leaf */
 233 #endif /* TC_I960 */
 234
 235 #ifdef TC_A29K
 236 #define C_SHADOW        107     /* shadow symbol */
 237 #endif /* TC_A29K */
 238
 239 /********************** SECTION HEADER **********************/
 240
 241 struct scnhdr
 242   {
 243     char s_name[8];             /* section name */
 244     long s_paddr;               /* physical address, aliased s_nlib */
 245     long s_vaddr;               /* virtual address */
 246     long s_size;                /* section size */
 247     long s_scnptr;              /* file ptr to raw data for section */
 248     long s_relptr;              /* file ptr to relocation */
 249     long s_lnnoptr;             /* file ptr to line numbers */
 250     unsigned short s_nreloc;    /* number of relocation entries */
 251     unsigned short s_nlnno;     /* number of line number entries */
 252     long s_flags;               /* flags */
 253
 254 #ifdef TC_I960
 255     unsigned long s_align;      /* section alignment */
 256 #endif /* TC_I960 */
 257   };
 258
 259 #define SCNHDR  struct scnhdr
 260 #define SCNHSZ  sizeof(SCNHDR)
 261
 262 /*
 263  * names of "special" sections
 264  */
 265 #define _TEXT    ".text"        /* executable code section      */
 266 #define _DATA    ".data"        /* initialized data             */
 267 #define _BSS     ".bss"         /* un-initialized data          */
 268 #define _DEBUG   ".debug"       /* special section used by dbx  */
 269 #define _COMMENT ".comment"     /* version info                 */
 270 #define _LIB     ".lib"         /* shared lib info section      */
 271 #define _TV      ".tv"
 272
 273 /*
 274  * s_flags "type"
 275  */
 276
 277 /*
 278  * In instances where it is necessary for a linker to
 279  * produce an output file which contains text or data not
 280  * based at virtual address 0, e.g. for a ROM, then the
 281  * linker should accept address base information as command
 282  * input and use PAD sections to skip over unused addresses.
 283  * (at least for a29k.  Maybe others.)
 284  */
 285
 286 #define STYP_REG         (0x0000)       /* "regular" section: allocated, relocated, loaded */
 287 #define STYP_DSECT       (0x0001)       /* "dummy" section: not allocated, relocated, not loaded */
 288 #define STYP_NOLOAD      (0x0002)       /* "noload" section: allocated, relocated, not loaded */
 289 #define STYP_GROUP       (0x0004)       /* "grouped" section: formed of input sections */
 290 #define STYP_PAD         (0x0008)       /* "padding" section: not allocated, not relocated, loaded */
 291 #define STYP_COPY        (0x0010)       /* "copy" section: for decision function used by field update;  not allocated, not relocated,
 292                                      loaded; reloc & lineno entries processed normally */
 293 #define STYP_TEXT        (0x0020)       /* section contains text only */
 294 #define S_SHRSEG         (0x0020)       /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
 295                                      will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
 296                                      update all process invocations. */
 297 #define STYP_DATA        (0x0040)       /* section contains data only */
 298 #define STYP_BSS         (0x0080)       /* section contains bss only */
 299 #define S_NEWFCN         (0x0100)       /* In a minimal file or an update file, a new function (as compared with a replaced function) */
 300 #define STYP_INFO        (0x0200)       /* comment section : not allocated not relocated, not loaded */
 301 #define STYP_OVER        (0x0400)       /* overlay section : relocated not allocated or loaded */
 302 #define STYP_LIB         (0x0800)       /* for .lib section : same as INFO */
 303 #define STYP_MERGE       (0x2000)       /* merge section -- combines with text, data or bss sections only */
 304 #define STYP_REVERSE_PAD (0x4000)       /* section will be padded with no-op instructions wherever padding is necessary and there is a
 305                                      word of contiguous bytes beginning on a word boundary. */
 306
 307 #ifdef TC_A29K
 308 /* NOTE:  The use of STYP_BSSREG for relocation is not yet defined. */
 309 #define STYP_BSSREG     0x1200  /* Global register area (like STYP_INFO) */
 310 #define STYP_ENVIR      0x2200  /* Environment (like STYP_INFO) */
 311 #define STYP_ABS        0x4000  /* Absolute (allocated, not reloc, loaded) */
 312 #define STYP_LIT        0x8020  /* Literal data (like STYP_TEXT) */
 313 #endif /* TC_A29K */
 314
 315 /********************** LINE NUMBERS **********************/
 316
 317 /* 1 line number entry for every "breakpointable" source line in a section.
 318  * Line numbers are grouped on a per function basis; first entry in a function
 319  * grouping will have l_lnno = 0 and in place of physical address will be the
 320  * symbol table index of the function name.
 321  */
 322 struct lineno
 323   {
 324     union
 325       {
 326         long l_symndx;          /* symbol index of function name, iff l_lnno == 0*/
 327         long l_paddr;           /* (physical) address of line number */
 328       }
 329     l_addr;
 330     unsigned short l_lnno;      /* line number */
 331 #ifdef TC_I960
 332     /* not used on a29k */
 333     char padding[2];            /* force alignment */
 334 #endif /* TC_I960 */
 335   };
 336
 337 #define LINENO  struct lineno
 338 #define LINESZ  sizeof(LINENO)
 339
 340
 341 /********************** SYMBOLS **********************/
 342
 343 #define SYMNMLEN        8       /* # characters in a symbol name */
 344 #define FILNMLEN        14      /* # characters in a file name */
 345 #define DIMNUM          4       /* # array dimensions in auxiliary entry */
 346
 347 struct syment
 348   {
 349     union
 350       {
 351         char _n_name[SYMNMLEN]; /* old COFF version */
 352         struct
 353           {
 354             long _n_zeroes;     /* new == 0 */
 355             long _n_offset;     /* offset into string table */
 356           }
 357         _n_n;
 358         char *_n_nptr[2];       /* allows for overlaying */
 359       }
 360     _n;
 361     long n_value;               /* value of symbol */
 362     short n_scnum;              /* section number */
 363
 364 #ifdef TC_I960
 365     /* This isn't yet used on the i960.  In some formats this
 366            is two bytes of padding.  In others, it is missing entirely. */
 367     unsigned short n_flags;     /* copy of flags from filhdr */
 368 #endif /* TC_I960 */
 369
 370 #ifdef TC_A29K
 371     unsigned short n_type;      /* type and derived type */
 372 #else /* TC_A29K */
 373     /* at least i960 uses long */
 374     unsigned long n_type;       /* type and derived type */
 375 #endif /* TC_A29K */
 376
 377     char n_sclass;              /* storage class */
 378     char n_numaux;              /* number of aux. entries */
 379
 380 #ifndef TC_A29K
 381     char pad2[2];               /* force alignment */
 382 #endif /* TC_A29K */
 383   };
 384
 385 #define SYMENT  struct syment
 386 #define SYMESZ  sizeof(SYMENT)  /* This had better also be sizeof(AUXENT) */
 387
 388 #define n_name          _n._n_name
 389 #define n_ptr           _n._n_nptr[1]
 390 #define n_zeroes        _n._n_n._n_zeroes
 391 #define n_offset        _n._n_n._n_offset
 392
 393 /*
 394      * Relocatable symbols have number of the section in which they are defined,
 395      * or one of the following:
 396      */
 397
 398 #define N_SCNUM ((short) 1-65535)       /* section num where symbol defined */
 399 #define N_UNDEF ((short)0)      /* undefined symbol */
 400 #define N_ABS   ((short)-1)     /* value of symbol is absolute */
 401 #define N_DEBUG ((short)-2)     /* debugging symbol -- symbol value is meaningless */
 402 #define N_TV    ((short)-3)     /* indicates symbol needs preload transfer vector */
 403 #define P_TV    ((short)-4)     /* indicates symbol needs transfer vector (postload) */
 404
 405 /*
 406  * Type of a symbol, in low 4 bits of the word
 407  */
 408 #define T_NULL          0       /* type not assigned */
 409 #define T_VOID          1       /* function argument (only used by compiler) (but now real void). */
 410 #define T_CHAR          2       /* character */
 411 #define T_SHORT         3       /* short integer */
 412 #define T_INT           4       /* integer */
 413 #define T_LONG          5       /* long integer */
 414 #define T_FLOAT         6       /* floating point */
 415 #define T_DOUBLE        7       /* double word */
 416 #define T_STRUCT        8       /* structure */
 417 #define T_UNION         9       /* union */
 418 #define T_ENUM          10      /* enumeration */
 419 #define T_MOE           11      /* member of enumeration */
 420 #define T_UCHAR         12      /* unsigned character */
 421 #define T_USHORT        13      /* unsigned short */
 422 #define T_UINT          14      /* unsigned integer */
 423 #define T_ULONG         15      /* unsigned long */
 424
 425 #ifdef TC_I960
 426 #define T_LNGDBL        16      /* long double */
 427 #endif /* TC_I960 */
 428
 429 /*
 430  * derived types, in n_type
 431  */
 432 #define DT_NON          (0)     /* no derived type */
 433 #define DT_PTR          (1)     /* pointer */
 434 #define DT_FCN          (2)     /* function */
 435 #define DT_ARY          (3)     /* array */
 436
 437 #ifndef TC_I960
 438
 439 #define N_BTMASK        (0x0f)
 440 #define N_TMASK         (0x30)
 441 #define N_BTSHFT        (4)
 442 #define N_TSHIFT        (2)
 443
 444 #else /* TC_I960 */
 445
 446 #define N_BTMASK        (0x1f)
 447 #define N_TMASK         (0x60)
 448 #define N_BTSHFT        (5)
 449 #define N_TSHIFT        (2)
 450
 451 #endif /* TC_I960 */
 452
 453 #define BTYPE(x)        ((x) & N_BTMASK)
 454
 455 #define ISPTR(x)        (((x) & N_TMASK) == (DT_PTR << N_BTSHFT))
 456 #define ISFCN(x)        (((x) & N_TMASK) == (DT_FCN << N_BTSHFT))
 457 #define ISARY(x)        (((x) & N_TMASK) == (DT_ARY << N_BTSHFT))
 458
 459 #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK))
 460
 461 union auxent
 462   {
 463     struct
 464       {
 465         long x_tagndx;          /* str, un, or enum tag indx */
 466         union
 467           {
 468             struct
 469               {
 470                 unsigned short x_lnno;  /* declaration line number */
 471                 unsigned short x_size;  /* str/union/array size */
 472               }
 473             x_lnsz;
 474             long x_fsize;       /* size of function */
 475           }
 476         x_misc;
 477         union
 478           {
 479             struct
 480               {                 /* if ISFCN, tag, or .bb */
 481                 long x_lnnoptr; /* ptr to fcn line # */
 482                 long x_endndx;  /* entry ndx past block end */
 483               }
 484             x_fcn;
 485             struct
 486               {                 /* if ISARY, up to 4 dimen. */
 487                 unsigned short x_dimen[DIMNUM];
 488               }
 489             x_ary;
 490           }
 491         x_fcnary;
 492         unsigned short x_tvndx; /* tv index */
 493       }
 494     x_sym;
 495
 496     /* This was just a struct x_file with x_fname only in a29k.  xoxorich. */
 497     union
 498       {
 499         char x_fname[FILNMLEN];
 500         struct
 501           {
 502             long x_zeroes;
 503             long x_offset;
 504           }
 505         x_n;
 506       }
 507     x_file;
 508
 509     struct
 510       {
 511         long x_scnlen;          /* section length */
 512         unsigned short x_nreloc;/* # relocation entries */
 513         unsigned short x_nlinno;/* # line numbers */
 514       }
 515     x_scn;
 516
 517     struct
 518       {
 519         long x_tvfill;          /* tv fill value */
 520         unsigned short x_tvlen; /* length of .tv */
 521
 522         /* This field was typo'd x_tvrna on a29k. xoxorich. */
 523         unsigned short x_tvran[2];      /* tv range */
 524       }
 525     x_tv;                       /* info about .tv section (in auxent of symbol .tv)) */
 526
 527 #ifdef TC_I960
 528     /******************************************
 529          *  I960-specific *2nd* aux. entry formats
 530          ******************************************/
 531     struct
 532       {
 533         /* This is a very old typo that keeps getting propogated. */
 534 #define x_stdindx x_stindx
 535         long x_stindx;          /* sys. table entry */
 536       }
 537     x_sc;                       /* system call entry */
 538
 539     struct
 540       {
 541         unsigned long x_balntry;/* BAL entry point */
 542       }
 543     x_bal;                      /* BAL-callable function */
 544
 545     struct
 546       {
 547         unsigned long x_timestamp;      /* time stamp */
 548         char x_idstring[20];    /* producer identity string */
 549       }
 550     x_ident;                    /* Producer ident info */
 551
 552     char a[sizeof (struct syment)];     /* force auxent/syment sizes to match */
 553 #endif /* TC_I960 */
 554   };
 555
 556 #define AUXENT  union auxent
 557 #define AUXESZ  sizeof(AUXENT)  /* This had better also be sizeof(SYMENT) */
 558
 559 #if VAX || I960
 560 #       define _ETEXT   "_etext"
 561 #else
 562 #       define _ETEXT   "etext"
 563 #endif
 564
 565 /********************** RELOCATION DIRECTIVES **********************/
 566
 567 struct reloc
 568   {
 569     long r_vaddr;               /* Virtual address of reference */
 570     long r_symndx;              /* Index into symbol table */
 571     unsigned short r_type;      /* Relocation type */
 572 #ifdef TC_I960
 573     /* not used for a29k */
 574     char pad[2];                /* Unused */
 575 #endif /* TC_I960 */
 576   };
 577
 578 #define RELOC struct reloc
 579 #define RELSZ sizeof(RELOC)
 580
 581 #define R_ABS           (0x00)  /* reference is absolute */
 582
 583 #ifdef TC_I860
 584 #define RM_DIR32        (0x06)
 585 #define R_IPAIR         (0x1c)
 586 #define R_N10PAIR       (0x1d)
 587 #define R_N10HIGH       (0x1e)
 588 #define R_N10LOW0       (0x1f)
 589 #define R_N10LOW1       (0x20)
 590 #define R_N10LOW2       (0x21)
 591 #define R_N10LOW3       (0x22)
 592 #define R_N10LOW4       (0x23)
 593 #define R_N10SPLIT0     (0x24)
 594 #define R_N10SPLIT1     (0x25)
 595 #define R_N10SPLIT2     (0x26)
 596 #define R_N10HIGHADJ    (0x27)
 597 #define R_N10BRADDR     (0x28)
 598 #endif /* TC_I860 */
 599
 600 #ifdef TC_I960
 601 #define R_RELLONG       (0x11)  /* Direct 32-bit relocation */
 602 #define R_IPRSHORT      (0x18)
 603 #define R_IPRMED        (0x19)  /* 24-bit ip-relative relocation */
 604 #define R_IPRLONG       (0x1a)
 605 #define R_OPTCALL       (0x1b)  /* 32-bit optimizable call (leafproc/sysproc) */
 606 #define R_OPTCALLX      (0x1c)  /* 64-bit optimizable call (leafproc/sysproc) */
 607 #define R_GETSEG        (0x1d)
 608 #define R_GETPA         (0x1e)
 609 #define R_TAGWORD       (0x1f)
 610 #endif /* TC_I960 */
 611
 612 #ifdef TC_A29K
 613 /*
 614  * NOTE: All the "I" forms refer to Am29000 instruction
 615  * formats.  The linker is expected to know how the numeric
 616  * information is split and/or aligned within the
 617  * instruction word(s).  R_BYTE works for instructions, too.
 618  *
 619  * If the parameter to a CONSTH instruction is a relocatable
 620  * type, two relocation records are written.  The first has
 621  * an r_type of R_IHIHALF (33 octal) and a normal r_vaddr
 622  * and r_symndx.  The second relocation record has an r_type
 623  * of R_IHCONST (34 octal), a normal r_vaddr (which is
 624  * redundant), and an r_symndx containing the 32-bit
 625  * constant offset to the relocation instead of the actual
 626  * symbol table index.  This second record is always
 627  * written, even if the constant offset is zero.  The
 628  * constant fields of the instruction are set to zero.
 629  */
 630
 631 #define R_IREL          (0x18)  /* instruction relative (jmp/call) */
 632 #define R_IABS          (0x19)  /* instruction absolute (jmp/call) */
 633 #define R_ILOHALF       (0x1a)  /* instruction low half  (const)  */
 634 #define R_IHIHALF       (0x1b)  /* instruction high half (consth) part 1 */
 635 #define R_IHCONST       (0x1c)  /* instruction high half (consth) part 2
 636                                   constant offset of R_IHIHALF relocation */
 637 #define R_BYTE          (0x1d)  /* relocatable byte value */
 638 #define R_HWORD         (0x1e)  /* relocatable halfword value */
 639 #define R_WORD          (0x1f)  /* relocatable word value */
 640 #define R_IGLBLRC       (0x20)  /* instruction global register RC */
 641 #define R_IGLBLRA       (0x21)  /* instruction global register RA */
 642 #define R_IGLBLRB       (0x22)  /* instruction global register RB */
 643 #endif /* TC_A29K */
 644
 645
 646 #define DEFAULT_DATA_SECTION_ALIGNMENT 4
 647 #define DEFAULT_BSS_SECTION_ALIGNMENT 4
 648 #define DEFAULT_TEXT_SECTION_ALIGNMENT 16
 649 /* For new sections we haven't heard of before */
 650 #define DEFAULT_SECTION_ALIGNMENT 4
 651
 652 #if defined(TC_I386)
 653 /*
 654  * X86 generic
 655  *      8-bit offset reference in 8-bits
 656  *      8-bit offset reference in 16-bits
 657  *      12-bit segment reference
 658  *      auxiliary relocation entry
 659  */
 660 #define R_OFF8          07
 661 #define R_OFF16         010
 662 #define R_SEG12         011
 663 #define R_AUX           013
 664
 665 /*
 666  * B16 and X86 generics
 667  *      16-bit direct reference
 668  *      16-bit "relative" reference
 669  *      16-bit "indirect" (TV) reference
 670  */
 671 #define  R_DIR16        01
 672 #define  R_REL16        02
 673 #define  R_IND16        03
 674
 675 /*
 676  * 3B generic
 677  *      24-bit direct reference
 678  *      24-bit "relative" reference
 679  *      16-bit optimized "indirect" TV reference
 680  *      24-bit "indirect" TV reference
 681  *      32-bit "indirect" TV reference
 682  */
 683 #define  R_DIR24        04
 684 #define  R_REL24        05
 685 #define  R_OPT16        014
 686 #define  R_IND24        015
 687 #define  R_IND32        016
 688
 689 /*
 690  * XL generics
 691  *      10-bit direct reference
 692  *      10-bit "relative" reference
 693  *      32-bit "relative" reference
 694  */
 695 #define R_DIR10         025
 696 #define R_REL10         026
 697 #define R_REL32         027
 698
 699 /*
 700  * 3B and M32 generics
 701  *      32-bit direct reference
 702  */
 703 #define  R_DIR32        06
 704
 705 /*
 706  * M32 generic
 707  *      32-bit direct reference with bytes swapped
 708  */
 709 #define  R_DIR32S       012
 710
 711 #endif /* TC_I386 */
 712
 713 #if defined(TE_I386AIX)
 714
 715 #define UINFOSIZ        64      /* size of user info buffer */
 716 typedef char uinfo_t[UINFOSIZ];
 717
 718 struct env387
 719   {
 720     unsigned short control;
 721     unsigned short r0;
 722     unsigned short status;
 723     unsigned short r1;
 724     unsigned short tag;
 725     unsigned short r2;
 726     unsigned long eip;
 727     unsigned short code_seg;
 728     unsigned short opcode;
 729     unsigned long operand;
 730     unsigned short operand_seg;
 731     unsigned short r3;
 732     unsigned char regs[8][10];
 733   };
 734
 735 #define CD_NAMELEN 16           /* length of most names in this header */
 736 #define CORHDRSIZ       2048    /* size to which header is padded out */
 737 #define MAX_CORE_SEGS   32      /* maximum segments in a core dump */
 738 #define NUM_FREGS       1       /* # of saved FP regs */
 739
 740 /*
 741  * These are defined such that 286 and 386 kernels can produce
 742  * compatible dumps.
 743  */
 744 #define CD_AX   0
 745 #define CD_BX   1
 746 #define CD_CX   2
 747 #define CD_DX   3
 748 #define CD_SI   4
 749 #define CD_DI   5
 750 #define CD_BP   6
 751 #define CD_SP   7
 752 #define CD_FL   8
 753 #define CD_IP   9
 754 #define CD_CS   10
 755 #define CD_DS   11
 756 #define CD_ES   12
 757 #define CD_FS   13
 758 #define CD_GS   14
 759 #define CD_SS   15
 760 #define NUM_REGS        16
 761
 762 #ifndef SPATHLEN
 763 # define SPATHLEN 16            /* sys/param.h */
 764 #endif
 765 #ifndef NSIG
 766 # define NSIG 63                /* sys/signal.h */
 767 # define SIGSETSZ ((NSIG+31)/32)
 768 typedef struct ksigmask
 769   {
 770     unsigned long sigs[SIGSETSZ];
 771   }
 772
 773 ksigmask_t;
 774 #endif
 775
 776 struct corehdr
 777   {
 778     char cd_magic[4];           /* COR_MAGIC = "core" */
 779
 780     /* general information about the dump itself */
 781     struct dumpseg
 782       {                         /* table of contents for dump */
 783         long cs_type;           /* seg. type; see below */
 784         long cs_len;            /* length (in bytes) of segment */
 785         long cs_offset;         /* offset (in dump) of segment */
 786         long cs_address;        /* address segment had in mem */
 787       }
 788     cd_segs[MAX_CORE_SEGS];
 789
 790     /* general information about the process */
 791     char cd_comm[CD_NAMELEN];   /* command being run */
 792     char cd_mach[CD_NAMELEN];   /* type of machine it ran on */
 793     char cd_site[CD_NAMELEN];   /* name of site it ran on */
 794     long cd_ldtype;             /* type of load module running */
 795     char cd_intsize;            /* sizeof(int) */
 796     char cd_dptrsize;           /* sizeof(char *) */
 797     char cd_tptrsize;           /* sizeof(int (*)()) */
 798     char cd_unused;
 799
 800     /* user-mode program state */
 801     long cd_regs[NUM_REGS];     /* user-mode general registers  */
 802     struct env387 cd_fpregs;    /* user-mode floating-point state */
 803
 804     /* kernel-mode program state */
 805     int (*cd_sig[NSIG]) ();     /* disposition of signals */
 806     ksigmask_t cd_sigmask;      /* signals to be blocked        */
 807     ksigmask_t cd_sigpend;      /* signals currently pending */
 808     long cd_cursig;             /* signal that caused the dump */
 809
 810     long cd_pid;                /* process ID of the corpse */
 811     long cd_ppid;               /* parent process ID of corpse */
 812     short cd_uid;               /* process effective user ID */
 813     short cd_ruid;              /* process real user ID */
 814     short cd_gid;               /* process effective group ID */
 815     short cd_rgid;              /* process real group ID        */
 816
 817     uinfo_t cd_uinfo;           /* buffer of user information   */
 818     char cd_locname[32];        /* name of /local */
 819     char cd_uvers[CD_NAMELEN];  /* user version string */
 820     unsigned short cd_spath[SPATHLEN];  /* sitepath */
 821   };
 822
 823 #ifndef NOCHECKS
 824 /* this will generate an error if sizeof(struct corehdr) > CORHDRSIZ */
 825 struct
 826   {
 827     char xxcdxx[CORHDRSIZ + 1 - sizeof (struct corehdr)];
 828   };
 829
 830 #endif /* ! NOCHECKS */
 831
 832 /*
 833  * segment types (in cs_type)
 834  *      each segment in the address space appears here, whether or not it
 835  *      is actually dumped.  Read/only segments will not actually be dumped.
 836  *      A segment that is not in the dump will have a cs_offset of zero.
 837  */
 838 #define COR_TYPE_CODE           'x'     /* process code - NOT IN DUMP   */
 839 #define COR_TYPE_DATA           'd'     /* process data segment         */
 840 #define COR_TYPE_STACK          's'     /* process stack segment        */
 841 #define COR_TYPE_LIBCODE        'X'     /* shared lib code - NOT IN DUMP*/
 842 #define COR_TYPE_LIBDATA        'D'     /* shared lib data              */
 843 #define COR_TYPE_READ           'r'     /* other read/only - NOT IN DUMP*/
 844 #define COR_TYPE_WRITE          'w'     /* other writeable              */
 845 #define COR_TYPE_MSC            '?'     /* other, mapped in segment     */
 846
 847 #endif /* TE_I386AIX */
 848
 849 /*
 850  * Local Variables:
 851  * comment-column: 0
 852  * End:
 853  */
 854
 855 /* end of coff_gnu.h */