include/coff/sparc.h

   1 /*** coff information for Sparc.  */
   2
   3 /* This file is an amalgamation of several standard include files that
   4    define coff format, such as filehdr.h, aouthdr.h, and so forth.  In
   5    addition, all datatypes have been translated into character arrays of
   6    (presumed) equivalent size.  This is necessary so that this file can
   7    be used with different systems while still yielding the same results.  */
   8
   9 /********************** FILE HEADER **********************/
  10
  11 struct external_filehdr
  12 {
  13   char f_magic[2];              /* magic number                 */
  14   char f_nscns[2];              /* number of sections           */
  15   char f_timdat[4];             /* time & date stamp            */
  16   char f_symptr[4];             /* file pointer to symtab       */
  17   char f_nsyms[4];              /* number of symtab entries     */
  18   char f_opthdr[2];             /* sizeof(optional hdr)         */
  19   char f_flags[2];              /* flags                        */
  20 };
  21
  22 #define F_RELFLG        (0x0001)        /* relocation info stripped */
  23 #define F_EXEC          (0x0002)        /* file is executable */
  24 #define F_LNNO          (0x0004)        /* line numbers stripped */
  25 #define F_LSYMS         (0x0008)        /* local symbols stripped */
  26
  27 #define SPARCMAGIC      (0540)
  28
  29 /* This is Lynx's all-platform magic number for executables. */
  30
  31 #define LYNXCOFFMAGIC   (0415)
  32
  33 #define FILHDR  struct external_filehdr
  34 #define FILHSZ  20
  35
  36 /********************** AOUT "OPTIONAL HEADER" **********************/
  37
  38 typedef struct
  39 {
  40   char magic[2];                /* type of file                         */
  41   char vstamp[2];               /* version stamp                        */
  42   char tsize[4];                /* text size in bytes, padded to FW bdry*/
  43   char dsize[4];                /* initialized data "  "                */
  44   char bsize[4];                /* uninitialized data "   "             */
  45   char entry[4];                /* entry pt.                            */
  46   char text_start[4];           /* base of text used for this file */
  47   char data_start[4];           /* base of data used for this file */
  48 }
  49 AOUTHDR;
  50
  51 #define AOUTSZ 28
  52 #define AOUTHDRSZ 28
  53
  54 #define OMAGIC          0404    /* object files, eg as output */
  55 #define ZMAGIC          0413    /* demand load format, eg normal ld output */
  56 #define STMAGIC         0401    /* target shlib */
  57 #define SHMAGIC         0443    /* host   shlib */
  58
  59 /********************** SECTION HEADER **********************/
  60
  61 struct external_scnhdr
  62 {
  63   char s_name[8];               /* section name                 */
  64   char s_paddr[4];              /* physical address, aliased s_nlib */
  65   char s_vaddr[4];              /* virtual address              */
  66   char s_size[4];               /* section size                 */
  67   char s_scnptr[4];             /* file ptr to raw data for section */
  68   char s_relptr[4];             /* file ptr to relocation       */
  69   char s_lnnoptr[4];            /* file ptr to line numbers     */
  70   char s_nreloc[2];             /* number of relocation entries */
  71   char s_nlnno[2];              /* number of line number entries*/
  72   char s_flags[4];              /* flags                        */
  73 };
  74
  75 #define SCNHDR  struct external_scnhdr
  76 #define SCNHSZ  40
  77
  78 /* Names of "special" sections. */
  79
  80 #define _TEXT   ".text"
  81 #define _DATA   ".data"
  82 #define _BSS    ".bss"
  83 #define _TV     ".tv"
  84 #define _INIT   ".init"
  85 #define _FINI   ".fini"
  86 #define _COMMENT ".comment"
  87 #define _LIB ".lib"
  88
  89 /********************** LINE NUMBERS **********************/
  90
  91 /* 1 line number entry for every "breakpointable" source line in a section.
  92    Line numbers are grouped on a per function basis; first entry in a function
  93    grouping will have l_lnno = 0 and in place of physical address will be the
  94    symbol table index of the function name. */
  95
  96 struct external_lineno
  97 {
  98   union {
  99     char l_symndx[4];           /* fn name symbol index, iff l_lnno == 0 */
 100     char l_paddr[4];            /* (physical) address of line number */
 101   } l_addr;
 102   char l_lnno[2];               /* line number */
 103 };
 104
 105 #define LINENO  struct external_lineno
 106 #define LINESZ  (6)
 107
 108 /********************** SYMBOLS **********************/
 109
 110 #define E_SYMNMLEN      (8)     /* # characters in a symbol name        */
 111 #define E_FILNMLEN      (14)    /* # characters in a file name          */
 112 #define E_DIMNUM        (4)     /* # array dimensions in auxiliary entry */
 113
 114 struct external_syment
 115 {
 116   union {
 117     char e_name[E_SYMNMLEN];
 118     struct {
 119       char e_zeroes[4];
 120       char e_offset[4];
 121     } e;
 122 #if 0 /* of doubtful value */
 123     char e_nptr[2][4];
 124     struct {
 125       char e_leading_zero[1];
 126       char e_dbx_type[1];
 127       char e_dbx_desc[2];
 128     } e_dbx;
 129 #endif
 130   } e;
 131
 132   char e_value[4];
 133   char e_scnum[2];
 134   char e_type[2];
 135   char e_sclass[1];
 136   char e_numaux[1];
 137   char padding[2];
 138 };
 139
 140 #define N_BTMASK        (0xf)
 141 #define N_TMASK         (0x30)
 142 #define N_BTSHFT        (4)
 143 #define N_TSHIFT        (2)
 144
 145 union external_auxent
 146 {
 147   struct {
 148     char x_tagndx[4];           /* str, un, or enum tag indx */
 149     union {
 150       struct {
 151         char  x_lnno[2];        /* declaration line number */
 152         char  x_size[2];        /* str/union/array size */
 153       } x_lnsz;
 154       char x_fsize[4];          /* size of function */
 155     } x_misc;
 156     union {
 157       struct {                  /* if ISFCN, tag, or .bb */
 158         char x_lnnoptr[4];      /* ptr to fcn line # */
 159         char x_endndx[4];       /* entry ndx past block end */
 160       } x_fcn;
 161       struct {          /* if ISARY, up to 4 dimen. */
 162         char x_dimen[E_DIMNUM][2];
 163       } x_ary;
 164     } x_fcnary;
 165     char x_tvndx[2];            /* tv index */
 166   } x_sym;
 167
 168   union {
 169     char x_fname[E_FILNMLEN];
 170     struct {
 171       char x_zeroes[4];
 172       char x_offset[4];
 173     } x_n;
 174   } x_file;
 175
 176   struct {
 177     char x_scnlen[4];           /* section length */
 178     char x_nreloc[2];           /* # relocation entries */
 179     char x_nlinno[2];           /* # line numbers */
 180   } x_scn;
 181
 182   struct {
 183     char x_tvfill[4];           /* tv fill value */
 184     char x_tvlen[2];            /* length of .tv */
 185     char x_tvran[2][2];         /* tv range */
 186   } x_tv;                       /* .tv section info (in auxent of sym .tv)) */
 187
 188   char x_fill[20];              /* forces to 20-byte size */
 189 };
 190
 191 #define SYMENT  struct external_syment
 192 #define SYMESZ  20
 193 #define AUXENT  union external_auxent
 194 #define AUXESZ  20
 195
 196 #define _ETEXT  "etext"
 197
 198 /********************** RELOCATION DIRECTIVES **********************/
 199
 200 struct external_reloc {
 201   char r_vaddr[4];
 202   char r_symndx[4];
 203   char r_type[2];
 204   char r_spare[2];
 205   char r_offset[4];
 206 };
 207
 208 #define RELOC struct external_reloc
 209 #define RELSZ 16
 210