include/internalcoff.h

   1 /********************** FILE HEADER **********************/
   2 struct internal_filehdr
   3 {
   4   unsigned short        f_magic; /* magic number                        */
   5   unsigned short        f_nscns; /* number of sections          */
   6   long          f_timdat;       /* time & date stamp            */
   7   long          f_symptr;       /* file pointer to symtab       */
   8   long          f_nsyms;        /* number of symtab entries     */
   9   unsigned short        f_opthdr; /* sizeof(optional hdr)               */
  10   unsigned short        f_flags; /* flags                       */
  11 };
  12
  13 /* Bits for f_flags:
  14  *      F_RELFLG        relocation info stripped from file
  15  *      F_EXEC          file is executable (no unresolved external references)
  16  *      F_LNNO          line numbers stripped from file
  17  *      F_LSYMS         local symbols stripped from file
  18  *      F_AR32WR        file has byte ordering of an AR32WR machine (e.g. vax)
  19  */
  20
  21 #define F_RELFLG        (0x0001)
  22 #define F_EXEC          (0x0002)
  23 #define F_LNNO          (0x0004)
  24 #define F_LSYMS         (0x0008)
  25 #define F_AR32WR        (0x0010)
  26 #define F_AR32W     0x200
  27 /********************** AOUT "OPTIONAL HEADER" **********************/
  28 struct internal_aouthdr {
  29         short           magic;  /* type of file                         */
  30         short           vstamp; /* version stamp                        */
  31         unsigned long   tsize;  /* text size in bytes, padded to FW bdry*/
  32         unsigned long   dsize;  /* initialized data "  "                */
  33         unsigned long   bsize;  /* uninitialized data "   "             */
  34         unsigned long   entry;  /* entry pt.                            */
  35         unsigned long   text_start;     /* base of text used for this file */
  36         unsigned long   data_start;     /* base of data used for this file */
  37         unsigned long   tagentries;     /* number of tag entries to follow */
  38 } ;
  39
  40 /********************** STORAGE CLASSES **********************/
  41
  42 #define C_EFCN          -1      /* physical end of function     */
  43 #define C_NULL          0
  44 #define C_AUTO          1       /* automatic variable           */
  45 #define C_EXT           2       /* external symbol              */
  46 #define C_STAT          3       /* static                       */
  47 #define C_REG           4       /* register variable            */
  48 #define C_EXTDEF        5       /* external definition          */
  49 #define C_LABEL         6       /* label                        */
  50 #define C_ULABEL        7       /* undefined label              */
  51 #define C_MOS           8       /* member of structure          */
  52 #define C_ARG           9       /* function argument            */
  53 #define C_STRTAG        10      /* structure tag                */
  54 #define C_MOU           11      /* member of union              */
  55 #define C_UNTAG         12      /* union tag                    */
  56 #define C_TPDEF         13      /* type definition              */
  57 #define C_USTATIC       14      /* undefined static             */
  58 #define C_ENTAG         15      /* enumeration tag              */
  59 #define C_MOE           16      /* member of enumeration        */
  60 #define C_REGPARM       17      /* register parameter           */
  61 #define C_FIELD         18      /* bit field                    */
  62 #define C_AUTOARG       19      /* auto argument                */
  63 #define C_LASTENT       20      /* dummy entry (end of block)   */
  64 #define C_BLOCK         100     /* ".bb" or ".eb"               */
  65 #define C_FCN           101     /* ".bf" or ".ef"               */
  66 #define C_EOS           102     /* end of structure             */
  67 #define C_FILE          103     /* file name                    */
  68 #define C_LINE          104     /* line # reformatted as symbol table entry */
  69 #define C_ALIAS         105     /* duplicate tag                */
  70 #define C_HIDDEN        106     /* ext symbol in dmert public lib */
  71
  72         /* New storage classes for 80960 */
  73
  74 /* C_LEAFPROC is obsolete.  Use C_LEAFEXT or C_LEAFSTAT */
  75 #define C_LEAFPROC      108     /* Leaf procedure, "call" via BAL */
  76
  77 #define C_SCALL         107     /* Procedure reachable via system call */
  78 #define C_LEAFEXT       108     /* External leaf */
  79 #define C_LEAFSTAT      113     /* Static leaf */
  80 #define C_OPTVAR        109     /* Optimized variable           */
  81 #define C_DEFINE        110     /* Preprocessor #define         */
  82 #define C_PRAGMA        111     /* Advice to compiler or linker */
  83 #define C_SEGMENT       112     /* 80960 segment name           */
  84
  85 /********************** SECTION HEADER **********************/
  86 struct internal_scnhdr {
  87         char            s_name[8];      /* section name                 */
  88         long            s_paddr;        /* physical address, aliased s_nlib */
  89         long            s_vaddr;        /* virtual address              */
  90         long            s_size;         /* section size                 */
  91         long            s_scnptr;       /* file ptr to raw data for section */
  92         long            s_relptr;       /* file ptr to relocation       */
  93         long            s_lnnoptr;      /* file ptr to line numbers     */
  94         unsigned short  s_nreloc;       /* number of relocation entries */
  95         unsigned short  s_nlnno;        /* number of line number entries*/
  96         long            s_flags;        /* flags                        */
  97 #ifdef I960
  98         long            s_align;
  99 #endif
 100 };
 101
 102
 103 /*
 104  * names of "special" sections
 105  */
 106 #define _TEXT   ".text"
 107 #define _DATA   ".data"
 108 #define _BSS    ".bss"
 109
 110 /*
 111  * s_flags "type"
 112  */
 113 #define STYP_REG         (0x0000) /* "regular": allocated, relocated, loaded */
 114 #define STYP_DSECT       (0x0001) /* "dummy":  relocated only*/
 115 #define STYP_NOLOAD      (0x0002) /* "noload": allocated, relocated, not loaded */
 116 #define STYP_GROUP       (0x0004) /* "grouped": formed of input sections */
 117 #define STYP_PAD         (0x0008) /* "padding": not allocated, not relocated, loaded */
 118 #define STYP_COPY        (0x0010) /* "copy": for decision function used by field update;  not allocated, not relocated,
 119                                      loaded; reloc & lineno entries processed normally */
 120 #define STYP_TEXT        (0x0020) /* section contains text only */
 121 #define S_SHRSEG         (0x0020) /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
 122                                      will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
 123                                      update all process invocations. */
 124 #define STYP_DATA        (0x0040) /* section contains data only */
 125 #define STYP_BSS         (0x0080) /* section contains bss only */
 126 #define S_NEWFCN         (0x0100) /* In a minimal file or an update file, a new function (as compared with a replaced function) */
 127 #define STYP_INFO        (0x0200) /* comment: not allocated not relocated, not loaded */
 128 #define STYP_OVER        (0x0400) /* overlay: relocated not allocated or loaded */
 129 #define STYP_LIB         (0x0800) /* for .lib: same as INFO */
 130 #define STYP_MERGE       (0x2000) /* merge section -- combines with text, data or bss sections only */
 131 #define STYP_REVERSE_PAD (0x4000) /* section will be padded with no-op instructions wherever padding is necessary and there is a
 132                                      word of contiguous bytes beginning on a word boundary. */
 133 /********************** LINE NUMBERS **********************/
 134
 135 /* 1 line number entry for every "breakpointable" source line in a section.
 136  * Line numbers are grouped on a per function basis; first entry in a function
 137  * grouping will have l_lnno = 0 and in place of physical address will be the
 138  * symbol table index of the function name.
 139  */
 140
 141 struct internal_lineno {
 142         union {
 143                 long l_symndx;  /* function name symbol index, iff l_lnno == 0*/
 144                 long l_paddr;   /* (physical) address of line number    */
 145         } l_addr;
 146         unsigned short  l_lnno; /* line number          */
 147 };
 148
 149 /********************** SYMBOLS **********************/
 150 struct internal_syment {
 151         union {
 152                 char    _n_name[SYMNMLEN];      /* old COFF version     */
 153                 struct {
 154                         long    _n_zeroes;      /* new == 0             */
 155                         long    _n_offset;      /* offset into string table */
 156                 } _n_n;
 157                 char    *_n_nptr[2];    /* allows for overlaying        */
 158         } _n;
 159         long            n_value;        /* value of symbol              */
 160         short           n_scnum;        /* section number               */
 161         unsigned short  n_flags;        /* copy of flags from filhdr    */
 162         unsigned short  n_type;         /* type and derived type        */
 163         char            n_sclass;       /* storage class                */
 164         char            n_numaux;       /* number of aux. entries       */
 165 };
 166
 167 /*
 168  * Relocatable symbols have number of the section in which they are defined,
 169  * or one of the following:
 170  */
 171 #define N_UNDEF ((short)0)  /* undefined symbol */
 172 #define N_ABS   ((short)-1) /* value of symbol is absolute */
 173 #define N_DEBUG ((short)-2) /* debugging symbol -- value is meaningless */
 174 #define N_TV    ((short)-3) /* indicates symbol needs preload transfer vector */
 175 #define P_TV    ((short)-4) /* indicates symbol needs postload transfer vector*/
 176
 177 /*
 178  * Type of a symbol, in low N bits of the word
 179  */
 180 #define T_NULL          0
 181 #define T_VOID          1       /* function argument (only used by compiler) */
 182 #define T_CHAR          2       /* character            */
 183 #define T_SHORT         3       /* short integer        */
 184 #define T_INT           4       /* integer              */
 185 #define T_LONG          5       /* long integer         */
 186 #define T_FLOAT         6       /* floating point       */
 187 #define T_DOUBLE        7       /* double word          */
 188 #define T_STRUCT        8       /* structure            */
 189 #define T_UNION         9       /* union                */
 190 #define T_ENUM          10      /* enumeration          */
 191 #define T_MOE           11      /* member of enumeration*/
 192 #define T_UCHAR         12      /* unsigned character   */
 193 #define T_USHORT        13      /* unsigned short       */
 194 #define T_UINT          14      /* unsigned integer     */
 195 #define T_ULONG         15      /* unsigned long        */
 196 #define T_LNGDBL        16      /* long double          */
 197
 198 /*
 199  * derived types, in n_type
 200 */
 201 #define DT_NON          (0)     /* no derived type */
 202 #define DT_PTR          (1)     /* pointer */
 203 #define DT_FCN          (2)     /* function */
 204 #define DT_ARY          (3)     /* array */
 205
 206 #define BTYPE(x)        ((x) & N_BTMASK)
 207
 208 #define ISPTR(x)        (((x) & N_TMASK) == (DT_PTR << N_BTSHFT))
 209 #define ISFCN(x)        (((x) & N_TMASK) == (DT_FCN << N_BTSHFT))
 210 #define ISARY(x)        (((x) & N_TMASK) == (DT_ARY << N_BTSHFT))
 211 #define ISTAG(x)        ((x)==C_STRTAG||(x)==C_UNTAG||(x)==C_ENTAG)
 212 #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK))
 213
 214
 215 union internal_auxent
 216 {
 217   struct {
 218     union {
 219       long l;                   /* str, un, or enum tag indx */
 220       struct coff_ptr_struct *p;
 221     } x_tagndx;
 222
 223     union {
 224       struct {
 225         unsigned short x_lnno;  /* declaration line number */
 226         unsigned short x_size;  /* str/union/array size */
 227       } x_lnsz;
 228       long x_fsize;             /* size of function */
 229     } x_misc;
 230     union {
 231
 232       struct {                  /* if ISFCN, tag, or .bb */
 233         long x_lnnoptr;         /* ptr to fcn line # */
 234         union {                 /* entry ndx past block end */
 235           long  l;
 236           struct coff_ptr_struct *p;
 237
 238         } x_endndx;
 239
 240
 241       } x_fcn;
 242       struct {                  /* if ISARY, up to 4 dimen. */
 243         unsigned short x_dimen[DIMNUM];
 244       } x_ary;
 245     } x_fcnary;
 246     unsigned short x_tvndx;     /* tv index */
 247   } x_sym;
 248
 249   union {
 250     char x_fname[FILNMLEN];
 251     struct {
 252       long x_zeroes;
 253       long x_offset;
 254     } x_n;
 255   } x_file;
 256
 257   struct {
 258     long x_scnlen;              /* section length */
 259     unsigned short x_nreloc;    /* # relocation entries */
 260     unsigned short x_nlinno;    /* # line numbers */
 261   } x_scn;
 262
 263   struct {
 264     long                x_tvfill; /* tv fill value */
 265     unsigned short      x_tvlen; /* length of .tv */
 266     unsigned short      x_tvran[2]; /* tv range */
 267   } x_tv;                       /* info about .tv section (in auxent of symbol .tv)) */
 268
 269   /******************************************
 270    *  I960-specific *2nd* aux. entry formats
 271    ******************************************/
 272   struct {
 273     /* This is a very old typo that keeps getting propagated. */
 274 #define x_stdindx x_stindx
 275     long x_stindx;              /* sys. table entry */
 276   } x_sc;                       /* system call entry */
 277
 278   struct {
 279     unsigned long x_balntry;    /* BAL entry point */
 280   } x_bal;                      /* BAL-callable function */
 281
 282   struct {
 283     unsigned long       x_timestamp; /* time stamp */
 284     char        x_idstring[20]; /* producer identity string */
 285   } x_ident;                    /* Producer ident info */
 286
 287
 288 };
 289
 290 /********************** RELOCATION DIRECTIVES **********************/
 291
 292 struct internal_reloc {
 293         long r_vaddr;           /* Virtual address of reference */
 294         long r_symndx;          /* Index into symbol table      */
 295         unsigned short r_type;  /* Relocation type              */
 296 #if M88
 297         unsigned short r_offset;
 298 #endif
 299 };
 300
 301 #define R_RELBYTE       017
 302 #define R_RELWORD       020
 303 #define R_PCRBYTE       022
 304 #define R_PCRWORD       023
 305 #define R_PCRLONG       024
 306
 307 #define R_DIR32         06
 308 #define R_PCLONG        020
 309 #define R_RELBYTE       017
 310 #define R_RELWORD       020
 311
 312 #define R_PCRBYTE       022
 313 #define R_PCRWORD       023
 314 #define R_PCRLONG       024
 315
 316 #define R_PCR16L 128
 317 #define R_PCR26L 129
 318 #define R_VRT16  130
 319 #define R_HVRT16 131
 320 #define R_LVRT16 132
 321 #define R_VRT32  133
 322 #define R_RELLONG       (0x11)  /* Direct 32-bit relocation */
 323 #define R_IPRSHORT      (0x18)
 324 #define R_IPRMED        (0x19)  /* 24-bit ip-relative relocation */
 325 #define R_IPRLONG       (0x1a)
 326 #define R_OPTCALL       (0x1b)  /* 32-bit optimizable call (leafproc/sysproc) */
 327 #define R_OPTCALLX      (0x1c)  /* 64-bit optimizable call (leafproc/sysproc) */
 328 #define R_GETSEG        (0x1d)
 329 #define R_GETPA         (0x1e)
 330 #define R_TAGWORD       (0x1f)