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) \
  18   ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)
  19
  20 /* The object type is encoded in the f_flags.  */
  21 #define F_ALPHA_OBJECT_TYPE_MASK        0x3000
  22 #define F_ALPHA_NO_SHARED               0x1000
  23 #define F_ALPHA_SHARABLE                0x2000
  24 #define F_ALPHA_CALL_SHARED             0x3000
  25
  26 #define FILHDR  struct external_filehdr
  27 #define FILHSZ  24
  28
  29 /********************** AOUT "OPTIONAL HEADER" **********************/
  30
  31
  32 typedef struct external_aouthdr
  33 {
  34   unsigned char magic[2];       /* type of file                         */
  35   unsigned char vstamp[2];      /* version stamp                        */
  36   unsigned char bldrev[2];      /* ?? */
  37   unsigned char padding[2];     /* pad to quadword boundary             */
  38   unsigned char tsize[8];       /* text size in bytes                   */
  39   unsigned char dsize[8];       /* initialized data "  "                */
  40   unsigned char bsize[8];       /* uninitialized data "   "             */
  41   unsigned char entry[8];       /* entry pt.                            */
  42   unsigned char text_start[8];  /* base of text used for this file */
  43   unsigned char data_start[8];  /* base of data used for this file */
  44   unsigned char bss_start[8];   /* base of bss used for this file */
  45   unsigned char gprmask[4];     /* bitmask of general registers used */
  46   unsigned char fprmask[4];     /* bitmask of floating point registers used */
  47   unsigned char gp_value[8];    /* value for gp register */
  48 } AOUTHDR;
  49
  50 /* compute size of a header */
  51
  52 #define AOUTSZ 80
  53 #define AOUTHDRSZ 80
  54
  55 /********************** SECTION HEADER **********************/
  56
  57 struct external_scnhdr {
  58   unsigned char s_name[8];      /* section name                 */
  59   unsigned char s_paddr[8];     /* physical address, aliased s_nlib */
  60   unsigned char s_vaddr[8];     /* virtual address              */
  61   unsigned char s_size[8];      /* section size                 */
  62   unsigned char s_scnptr[8];    /* file ptr to raw data for section */
  63   unsigned char s_relptr[8];    /* file ptr to relocation       */
  64   unsigned char s_lnnoptr[8];   /* file ptr to line numbers     */
  65   unsigned char s_nreloc[2];    /* number of relocation entries */
  66   unsigned char s_nlnno[2];     /* number of line number entries*/
  67   unsigned char s_flags[4];     /* flags                        */
  68 };
  69
  70 #define SCNHDR  struct external_scnhdr
  71 #define SCNHSZ  64
  72
  73 /********************** RELOCATION DIRECTIVES **********************/
  74
  75 struct external_reloc {
  76   unsigned char r_vaddr[8];
  77   unsigned char r_symndx[4];
  78   unsigned char r_bits[4];
  79 };
  80
  81 #define RELOC struct external_reloc
  82 #define RELSZ 16
  83
  84 /* Constants to unpack the r_bits field.  The Alpha seems to always be
  85    little endian, so I haven't bothered to define big endian variants
  86    of these.  */
  87
  88 #define RELOC_BITS0_TYPE_LITTLE                 0xff
  89 #define RELOC_BITS0_TYPE_SH_LITTLE              0
  90
  91 #define RELOC_BITS1_EXTERN_LITTLE               0x01
  92
  93 #define RELOC_BITS1_OFFSET_LITTLE               0x7e
  94 #define RELOC_BITS1_OFFSET_SH_LITTLE            1
  95
  96 #define RELOC_BITS1_RESERVED_LITTLE             0x80
  97 #define RELOC_BITS1_RESERVED_SH_LITTLE          7
  98 #define RELOC_BITS2_RESERVED_LITTLE             0xff
  99 #define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE     1
 100 #define RELOC_BITS3_RESERVED_LITTLE             0x03
 101 #define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE     9
 102
 103 #define RELOC_BITS3_SIZE_LITTLE                 0xfc
 104 #define RELOC_BITS3_SIZE_SH_LITTLE              2
 105
 106 /* The r_type field in a reloc is one of the following values.  */
 107 #define ALPHA_R_IGNORE          0
 108 #define ALPHA_R_REFLONG         1
 109 #define ALPHA_R_REFQUAD         2
 110 #define ALPHA_R_GPREL32         3
 111 #define ALPHA_R_LITERAL         4
 112 #define ALPHA_R_LITUSE          5
 113 #define ALPHA_R_GPDISP          6
 114 #define ALPHA_R_BRADDR          7
 115 #define ALPHA_R_HINT            8
 116 #define ALPHA_R_SREL16          9
 117 #define ALPHA_R_SREL32         10
 118 #define ALPHA_R_SREL64         11
 119 #define ALPHA_R_OP_PUSH        12
 120 #define ALPHA_R_OP_STORE       13
 121 #define ALPHA_R_OP_PSUB        14
 122 #define ALPHA_R_OP_PRSHIFT     15
 123 #define ALPHA_R_GPVALUE        16
 124 #define ALPHA_R_GPRELHIGH      17
 125 #define ALPHA_R_GPRELLOW       18
 126 #define ALPHA_R_IMMED          19
 127
 128 /* Overloaded reloc value used by Net- and OpenBSD.  */
 129 #define ALPHA_R_LITERALSLEAZY  17
 130
 131 /* With ALPHA_R_LITUSE, the r_size field is one of the following values.  */
 132 #define ALPHA_R_LU_BASE         1
 133 #define ALPHA_R_LU_BYTOFF       2
 134 #define ALPHA_R_LU_JSR          3
 135
 136 /* With ALPHA_R_IMMED, the r_size field is one of the following values.  */
 137 #define ALPHA_R_IMMED_GP_16     1
 138 #define ALPHA_R_IMMED_GP_HI32   2
 139 #define ALPHA_R_IMMED_SCN_HI32  3
 140 #define ALPHA_R_IMMED_BR_HI32   4
 141 #define ALPHA_R_IMMED_LO32      5
 142
 143 /********************** SYMBOLIC INFORMATION **********************/
 144
 145 /* Written by John Gilmore.  */
 146
 147 /* ECOFF uses COFF-like section structures, but its own symbol format.
 148    This file defines the symbol format in fields whose size and alignment
 149    will not vary on different host systems.  */
 150
 151 /* File header as a set of bytes */
 152
 153 struct hdr_ext {
 154         unsigned char   h_magic[2];
 155         unsigned char   h_vstamp[2];
 156         unsigned char   h_ilineMax[4];
 157         unsigned char   h_idnMax[4];
 158         unsigned char   h_ipdMax[4];
 159         unsigned char   h_isymMax[4];
 160         unsigned char   h_ioptMax[4];
 161         unsigned char   h_iauxMax[4];
 162         unsigned char   h_issMax[4];
 163         unsigned char   h_issExtMax[4];
 164         unsigned char   h_ifdMax[4];
 165         unsigned char   h_crfd[4];
 166         unsigned char   h_iextMax[4];
 167         unsigned char   h_cbLine[8];
 168         unsigned char   h_cbLineOffset[8];
 169         unsigned char   h_cbDnOffset[8];
 170         unsigned char   h_cbPdOffset[8];
 171         unsigned char   h_cbSymOffset[8];
 172         unsigned char   h_cbOptOffset[8];
 173         unsigned char   h_cbAuxOffset[8];
 174         unsigned char   h_cbSsOffset[8];
 175         unsigned char   h_cbSsExtOffset[8];
 176         unsigned char   h_cbFdOffset[8];
 177         unsigned char   h_cbRfdOffset[8];
 178         unsigned char   h_cbExtOffset[8];
 179 };
 180
 181 /* File descriptor external record */
 182
 183 struct fdr_ext {
 184         unsigned char   f_adr[8];
 185         unsigned char   f_cbLineOffset[8];
 186         unsigned char   f_cbLine[8];
 187         unsigned char   f_cbSs[8];
 188         unsigned char   f_rss[4];
 189         unsigned char   f_issBase[4];
 190         unsigned char   f_isymBase[4];
 191         unsigned char   f_csym[4];
 192         unsigned char   f_ilineBase[4];
 193         unsigned char   f_cline[4];
 194         unsigned char   f_ioptBase[4];
 195         unsigned char   f_copt[4];
 196         unsigned char   f_ipdFirst[4];
 197         unsigned char   f_cpd[4];
 198         unsigned char   f_iauxBase[4];
 199         unsigned char   f_caux[4];
 200         unsigned char   f_rfdBase[4];
 201         unsigned char   f_crfd[4];
 202         unsigned char   f_bits1[1];
 203         unsigned char   f_bits2[3];
 204         unsigned char   f_padding[4];
 205 };
 206
 207 #define FDR_BITS1_LANG_BIG              0xF8
 208 #define FDR_BITS1_LANG_SH_BIG           3
 209 #define FDR_BITS1_LANG_LITTLE           0x1F
 210 #define FDR_BITS1_LANG_SH_LITTLE        0
 211
 212 #define FDR_BITS1_FMERGE_BIG            0x04
 213 #define FDR_BITS1_FMERGE_LITTLE         0x20
 214
 215 #define FDR_BITS1_FREADIN_BIG           0x02
 216 #define FDR_BITS1_FREADIN_LITTLE        0x40
 217
 218 #define FDR_BITS1_FBIGENDIAN_BIG        0x01
 219 #define FDR_BITS1_FBIGENDIAN_LITTLE     0x80
 220
 221 #define FDR_BITS2_GLEVEL_BIG            0xC0
 222 #define FDR_BITS2_GLEVEL_SH_BIG         6
 223 #define FDR_BITS2_GLEVEL_LITTLE         0x03
 224 #define FDR_BITS2_GLEVEL_SH_LITTLE      0
 225
 226 /* We ignore the `reserved' field in bits2. */
 227
 228 /* Procedure descriptor external record */
 229
 230 struct pdr_ext {
 231         unsigned char   p_adr[8];
 232         unsigned char   p_cbLineOffset[8];
 233         unsigned char   p_isym[4];
 234         unsigned char   p_iline[4];
 235         unsigned char   p_regmask[4];
 236         unsigned char   p_regoffset[4];
 237         unsigned char   p_iopt[4];
 238         unsigned char   p_fregmask[4];
 239         unsigned char   p_fregoffset[4];
 240         unsigned char   p_frameoffset[4];
 241         unsigned char   p_lnLow[4];
 242         unsigned char   p_lnHigh[4];
 243         unsigned char   p_gp_prologue[1];
 244         unsigned char   p_bits1[1];
 245         unsigned char   p_bits2[1];
 246         unsigned char   p_localoff[1];
 247         unsigned char   p_framereg[2];
 248         unsigned char   p_pcreg[2];
 249 };
 250
 251 #define PDR_BITS1_GP_USED_BIG           0x80
 252 #define PDR_BITS1_REG_FRAME_BIG         0x40
 253 #define PDR_BITS1_PROF_BIG              0x20
 254 #define PDR_BITS1_RESERVED_BIG          0x1f
 255 #define PDR_BITS1_RESERVED_SH_LEFT_BIG  8
 256 #define PDR_BITS2_RESERVED_BIG          0xff
 257 #define PDR_BITS2_RESERVED_SH_BIG       0
 258
 259 #define PDR_BITS1_GP_USED_LITTLE        0x01
 260 #define PDR_BITS1_REG_FRAME_LITTLE      0x02
 261 #define PDR_BITS1_PROF_LITTLE           0x04
 262 #define PDR_BITS1_RESERVED_LITTLE       0xf8
 263 #define PDR_BITS1_RESERVED_SH_LITTLE    3
 264 #define PDR_BITS2_RESERVED_LITTLE       0xff
 265 #define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5
 266
 267 /* Line numbers */
 268
 269 struct line_ext {
 270         unsigned char   l_line[4];
 271 };
 272
 273 /* Symbol external record */
 274
 275 struct sym_ext {
 276         unsigned char   s_value[8];
 277         unsigned char   s_iss[4];
 278         unsigned char   s_bits1[1];
 279         unsigned char   s_bits2[1];
 280         unsigned char   s_bits3[1];
 281         unsigned char   s_bits4[1];
 282 };
 283
 284 #define SYM_BITS1_ST_BIG                0xFC
 285 #define SYM_BITS1_ST_SH_BIG             2
 286 #define SYM_BITS1_ST_LITTLE             0x3F
 287 #define SYM_BITS1_ST_SH_LITTLE          0
 288
 289 #define SYM_BITS1_SC_BIG                0x03
 290 #define SYM_BITS1_SC_SH_LEFT_BIG        3
 291 #define SYM_BITS1_SC_LITTLE             0xC0
 292 #define SYM_BITS1_SC_SH_LITTLE          6
 293
 294 #define SYM_BITS2_SC_BIG                0xE0
 295 #define SYM_BITS2_SC_SH_BIG             5
 296 #define SYM_BITS2_SC_LITTLE             0x07
 297 #define SYM_BITS2_SC_SH_LEFT_LITTLE     2
 298
 299 #define SYM_BITS2_RESERVED_BIG          0x10
 300 #define SYM_BITS2_RESERVED_LITTLE       0x08
 301
 302 #define SYM_BITS2_INDEX_BIG             0x0F
 303 #define SYM_BITS2_INDEX_SH_LEFT_BIG     16
 304 #define SYM_BITS2_INDEX_LITTLE          0xF0
 305 #define SYM_BITS2_INDEX_SH_LITTLE       4
 306
 307 #define SYM_BITS3_INDEX_SH_LEFT_BIG     8
 308 #define SYM_BITS3_INDEX_SH_LEFT_LITTLE  4
 309
 310 #define SYM_BITS4_INDEX_SH_LEFT_BIG     0
 311 #define SYM_BITS4_INDEX_SH_LEFT_LITTLE  12
 312
 313 /* External symbol external record */
 314
 315 struct ext_ext {
 316         struct  sym_ext es_asym;
 317         unsigned char   es_bits1[1];
 318         unsigned char   es_bits2[3];
 319         unsigned char   es_ifd[4];
 320 };
 321
 322 #define EXT_BITS1_JMPTBL_BIG            0x80
 323 #define EXT_BITS1_JMPTBL_LITTLE         0x01
 324
 325 #define EXT_BITS1_COBOL_MAIN_BIG        0x40
 326 #define EXT_BITS1_COBOL_MAIN_LITTLE     0x02
 327
 328 #define EXT_BITS1_WEAKEXT_BIG           0x20
 329 #define EXT_BITS1_WEAKEXT_LITTLE        0x04
 330
 331 /* Dense numbers external record */
 332
 333 struct dnr_ext {
 334         unsigned char   d_rfd[4];
 335         unsigned char   d_index[4];
 336 };
 337
 338 /* Relative file descriptor */
 339
 340 struct rfd_ext {
 341   unsigned char rfd[4];
 342 };
 343
 344 /* Optimizer symbol external record */
 345
 346 struct opt_ext {
 347   unsigned char o_bits1[1];
 348   unsigned char o_bits2[1];
 349   unsigned char o_bits3[1];
 350   unsigned char o_bits4[1];
 351   struct rndx_ext o_rndx;
 352   unsigned char o_offset[4];
 353 };
 354
 355 #define OPT_BITS2_VALUE_SH_LEFT_BIG     16
 356 #define OPT_BITS2_VALUE_SH_LEFT_LITTLE  0
 357
 358 #define OPT_BITS3_VALUE_SH_LEFT_BIG     8
 359 #define OPT_BITS3_VALUE_SH_LEFT_LITTLE  8
 360
 361 #define OPT_BITS4_VALUE_SH_LEFT_BIG     0
 362 #define OPT_BITS4_VALUE_SH_LEFT_LITTLE  16