include/coff/alpha.h

   1 /* ECOFF support on Alpha machines.
   2    coff/ecoff.h must be included before this file.  */
   3
   4 /********************** FILE HEADER **********************/
   5
   6 struct external_filehdr {
   7   unsigned char f_magic[2];     /* magic number                 */
   8   unsigned char f_nscns[2];     /* number of sections           */
   9   unsigned char f_timdat[4];    /* time & date stamp            */
  10   unsigned char f_symptr[8];    /* file pointer to symtab       */
  11   unsigned char f_nsyms[4];     /* number of symtab entries     */
  12   unsigned char f_opthdr[2];    /* sizeof(optional hdr)         */
  13   unsigned char f_flags[2];     /* flags                        */
  14 };
  15
  16 /* Magic numbers are defined in coff/ecoff.h.  */
  17 #define ALPHA_ECOFF_BADMAG(x) ((x).f_magic!=ALPHA_MAGIC)
  18
  19 #define FILHDR  struct external_filehdr
  20 #define FILHSZ  sizeof(FILHDR)
  21
  22 /********************** AOUT "OPTIONAL HEADER" **********************/
  23
  24
  25 typedef struct external_aouthdr
  26 {
  27   unsigned char magic[2];       /* type of file                         */
  28   unsigned char vstamp[2];      /* version stamp                        */
  29   unsigned char tsize[8];       /* text size in bytes, padded to FW bdry*/
  30   unsigned char dsize[8];       /* initialized data "  "                */
  31   unsigned char bsize[8];       /* uninitialized data "   "             */
  32   unsigned char entry[8];       /* entry pt.                            */
  33   unsigned char text_start[8];  /* base of text used for this file */
  34   unsigned char data_start[8];  /* base of data used for this file */
  35   unsigned char bss_start[8];   /* base of bss used for this file */
  36   unsigned char gprmask[4];     /* ?? */
  37   unsigned char cprmask[4][8];  /* ?? */
  38   unsigned char gp_value[4];    /* value for gp register */
  39 } AOUTHDR;
  40
  41 /* compute size of a header */
  42
  43 #define AOUTSZ (sizeof(AOUTHDR))
  44
  45 /********************** SECTION HEADER **********************/
  46
  47 struct external_scnhdr {
  48   unsigned char s_name[8];      /* section name                 */
  49   unsigned char s_paddr[8];     /* physical address, aliased s_nlib */
  50   unsigned char s_vaddr[8];     /* virtual address              */
  51   unsigned char s_size[8];      /* section size                 */
  52   unsigned char s_scnptr[8];    /* file ptr to raw data for section */
  53   unsigned char s_relptr[8];    /* file ptr to relocation       */
  54   unsigned char s_lnnoptr[8];   /* file ptr to line numbers     */
  55   unsigned char s_nreloc[2];    /* number of relocation entries */
  56   unsigned char s_nlnno[2];     /* number of line number entries*/
  57   unsigned char s_flags[4];     /* flags                        */
  58 };
  59
  60 #define SCNHDR  struct external_scnhdr
  61 #define SCNHSZ  sizeof(SCNHDR)
  62
  63 /********************** RELOCATION DIRECTIVES **********************/
  64
  65 struct external_reloc {
  66   unsigned char r_vaddr[8];
  67   unsigned char r_bits[4];
  68 };
  69
  70 #define RELOC struct external_reloc
  71 #define RELSZ 8
  72
  73 /* MIPS ECOFF uses a packed 8 byte format for relocs.  These constants
  74    are used to unpack the r_bits field.  */
  75
  76 #define RELOC_BITS0_SYMNDX_SH_LEFT_BIG          16
  77 #define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE       0
  78
  79 #define RELOC_BITS1_SYMNDX_SH_LEFT_BIG          8
  80 #define RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE       8
  81
  82 #define RELOC_BITS2_SYMNDX_SH_LEFT_BIG          0
  83 #define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE       16
  84
  85 #define RELOC_BITS3_TYPE_BIG                    0x1E
  86 #define RELOC_BITS3_TYPE_SH_BIG                 1
  87 #define RELOC_BITS3_TYPE_LITTLE                 0x78
  88 #define RELOC_BITS3_TYPE_SH_LITTLE              3
  89
  90 #define RELOC_BITS3_EXTERN_BIG                  0x01
  91 #define RELOC_BITS3_EXTERN_LITTLE               0x80
  92
  93 #define DEFAULT_DATA_SECTION_ALIGNMENT 16
  94 #define DEFAULT_BSS_SECTION_ALIGNMENT 16
  95 #define DEFAULT_TEXT_SECTION_ALIGNMENT 16
  96 /* For new sections we havn't heard of before */
  97 #define DEFAULT_SECTION_ALIGNMENT 16
  98
  99 /********************** SYMBOLIC INFORMATION **********************/
 100
 101 /* Written by John Gilmore.  */
 102
 103 /* ECOFF uses COFF-like section structures, but its own symbol format.
 104    This file defines the symbol format in fields whose size and alignment
 105    will not vary on different host systems.  */
 106
 107 /* File header as a set of bytes */
 108
 109 struct hdr_ext {
 110         unsigned char   h_magic[2];
 111         unsigned char   h_vstamp[2];
 112         unsigned char   h_ilineMax[4];
 113         unsigned char   h_cbLine[4];
 114         unsigned char   h_cbLineOffset[4];
 115         unsigned char   h_idnMax[4];
 116         unsigned char   h_cbDnOffset[4];
 117         unsigned char   h_ipdMax[4];
 118         unsigned char   h_cbPdOffset[4];
 119         unsigned char   h_isymMax[4];
 120         unsigned char   h_cbSymOffset[4];
 121         unsigned char   h_ioptMax[4];
 122         unsigned char   h_cbOptOffset[4];
 123         unsigned char   h_iauxMax[4];
 124         unsigned char   h_cbAuxOffset[4];
 125         unsigned char   h_issMax[4];
 126         unsigned char   h_cbSsOffset[4];
 127         unsigned char   h_issExtMax[4];
 128         unsigned char   h_cbSsExtOffset[4];
 129         unsigned char   h_ifdMax[4];
 130         unsigned char   h_cbFdOffset[4];
 131         unsigned char   h_crfd[4];
 132         unsigned char   h_cbRfdOffset[4];
 133         unsigned char   h_iextMax[4];
 134         unsigned char   h_cbExtOffset[4];
 135 };
 136
 137 /* File descriptor external record */
 138
 139 struct fdr_ext {
 140         unsigned char   f_adr[4];
 141         unsigned char   f_rss[4];
 142         unsigned char   f_issBase[4];
 143         unsigned char   f_cbSs[4];
 144         unsigned char   f_isymBase[4];
 145         unsigned char   f_csym[4];
 146         unsigned char   f_ilineBase[4];
 147         unsigned char   f_cline[4];
 148         unsigned char   f_ioptBase[4];
 149         unsigned char   f_copt[4];
 150         unsigned char   f_ipdFirst[2];
 151         unsigned char   f_cpd[2];
 152         unsigned char   f_iauxBase[4];
 153         unsigned char   f_caux[4];
 154         unsigned char   f_rfdBase[4];
 155         unsigned char   f_crfd[4];
 156         unsigned char   f_bits1[1];
 157         unsigned char   f_bits2[3];
 158         unsigned char   f_cbLineOffset[4];
 159         unsigned char   f_cbLine[4];
 160 };
 161
 162 #define FDR_BITS1_LANG_BIG              0xF8
 163 #define FDR_BITS1_LANG_SH_BIG           3
 164 #define FDR_BITS1_LANG_LITTLE           0x1F
 165 #define FDR_BITS1_LANG_SH_LITTLE        0
 166
 167 #define FDR_BITS1_FMERGE_BIG            0x04
 168 #define FDR_BITS1_FMERGE_LITTLE         0x20
 169
 170 #define FDR_BITS1_FREADIN_BIG           0x02
 171 #define FDR_BITS1_FREADIN_LITTLE        0x40
 172
 173 #define FDR_BITS1_FBIGENDIAN_BIG        0x01
 174 #define FDR_BITS1_FBIGENDIAN_LITTLE     0x80
 175
 176 #define FDR_BITS2_GLEVEL_BIG            0xC0
 177 #define FDR_BITS2_GLEVEL_SH_BIG         6
 178 #define FDR_BITS2_GLEVEL_LITTLE         0x03
 179 #define FDR_BITS2_GLEVEL_SH_LITTLE      0
 180
 181 /* We ignore the `reserved' field in bits2. */
 182
 183 /* Procedure descriptor external record */
 184
 185 struct pdr_ext {
 186         unsigned char   p_adr[4];
 187         unsigned char   p_isym[4];
 188         unsigned char   p_iline[4];
 189         unsigned char   p_regmask[4];
 190         unsigned char   p_regoffset[4];
 191         unsigned char   p_iopt[4];
 192         unsigned char   p_fregmask[4];
 193         unsigned char   p_fregoffset[4];
 194         unsigned char   p_frameoffset[4];
 195         unsigned char   p_framereg[2];
 196         unsigned char   p_pcreg[2];
 197         unsigned char   p_lnLow[4];
 198         unsigned char   p_lnHigh[4];
 199         unsigned char   p_cbLineOffset[4];
 200 };
 201
 202 /* Line numbers */
 203
 204 struct line_ext {
 205         unsigned char   l_line[4];
 206 };
 207
 208 /* Symbol external record */
 209
 210 struct sym_ext {
 211         unsigned char   s_iss[4];
 212         unsigned char   s_value[4];
 213         unsigned char   s_bits1[1];
 214         unsigned char   s_bits2[1];
 215         unsigned char   s_bits3[1];
 216         unsigned char   s_bits4[1];
 217 };
 218
 219 #define SYM_BITS1_ST_BIG                0xFC
 220 #define SYM_BITS1_ST_SH_BIG             2
 221 #define SYM_BITS1_ST_LITTLE             0x3F
 222 #define SYM_BITS1_ST_SH_LITTLE          0
 223
 224 #define SYM_BITS1_SC_BIG                0x03
 225 #define SYM_BITS1_SC_SH_LEFT_BIG        3
 226 #define SYM_BITS1_SC_LITTLE             0xC0
 227 #define SYM_BITS1_SC_SH_LITTLE          6
 228
 229 #define SYM_BITS2_SC_BIG                0xE0
 230 #define SYM_BITS2_SC_SH_BIG             5
 231 #define SYM_BITS2_SC_LITTLE             0x07
 232 #define SYM_BITS2_SC_SH_LEFT_LITTLE     2
 233
 234 #define SYM_BITS2_RESERVED_BIG          0x10
 235 #define SYM_BITS2_RESERVED_LITTLE       0x08
 236
 237 #define SYM_BITS2_INDEX_BIG             0x0F
 238 #define SYM_BITS2_INDEX_SH_LEFT_BIG     16
 239 #define SYM_BITS2_INDEX_LITTLE          0xF0
 240 #define SYM_BITS2_INDEX_SH_LITTLE       4
 241
 242 #define SYM_BITS3_INDEX_SH_LEFT_BIG     8
 243 #define SYM_BITS3_INDEX_SH_LEFT_LITTLE  4
 244
 245 #define SYM_BITS4_INDEX_SH_LEFT_BIG     0
 246 #define SYM_BITS4_INDEX_SH_LEFT_LITTLE  12
 247
 248 /* External symbol external record */
 249
 250 struct ext_ext {
 251         unsigned char   es_bits1[1];
 252         unsigned char   es_bits2[1];
 253         unsigned char   es_ifd[2];
 254         struct  sym_ext es_asym;
 255 };
 256
 257 #define EXT_BITS1_JMPTBL_BIG            0x80
 258 #define EXT_BITS1_JMPTBL_LITTLE         0x01
 259
 260 #define EXT_BITS1_COBOL_MAIN_BIG        0x40
 261 #define EXT_BITS1_COBOL_MAIN_LITTLE     0x02
 262
 263 #define EXT_BITS1_WEAKEXT_BIG           0x20
 264 #define EXT_BITS1_WEAKEXT_LITTLE        0x04
 265
 266 /* Dense numbers external record */
 267
 268 struct dnr_ext {
 269         unsigned char   d_rfd[4];
 270         unsigned char   d_index[4];
 271 };
 272
 273 /* Relative file descriptor */
 274
 275 struct rfd_ext {
 276   unsigned char rfd[4];
 277 };
 278
 279 /* Optimizer symbol external record */
 280
 281 struct opt_ext {
 282   unsigned char o_bits1[1];
 283   unsigned char o_bits2[1];
 284   unsigned char o_bits3[1];
 285   unsigned char o_bits4[1];
 286   struct rndx_ext o_rndx;
 287   unsigned char o_offset[4];
 288 };
 289
 290 #define OPT_BITS2_VALUE_SH_LEFT_BIG     16
 291 #define OPT_BITS2_VALUE_SH_LEFT_LITTLE  0
 292
 293 #define OPT_BITS3_VALUE_SH_LEFT_BIG     8
 294 #define OPT_BITS3_VALUE_SH_LEFT_LITTLE  8
 295
 296 #define OPT_BITS4_VALUE_SH_LEFT_BIG     0
 297 #define OPT_BITS4_VALUE_SH_LEFT_LITTLE  16