1 /* ECOFF support on Alpha machines. 2 coff/ecoff.h must be included before this file. 3 4 Copyright 2001 Free Software Foundation, Inc. 5 6 This program 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 of the License, or 9 (at your option) any later version. 10 11 This program 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 this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19 20 /********************** FILE HEADER **********************/ 21 22 struct external_filehdr 23 { 24 unsigned char f_magic[2]; /* magic number */ 25 unsigned char f_nscns[2]; /* number of sections */ 26 unsigned char f_timdat[4]; /* time & date stamp */ 27 unsigned char f_symptr[8]; /* file pointer to symtab */ 28 unsigned char f_nsyms[4]; /* number of symtab entries */ 29 unsigned char f_opthdr[2]; /* sizeof(optional hdr) */ 30 unsigned char f_flags[2]; /* flags */ 31 }; 32 33 /* Magic numbers are defined in coff/ecoff.h. */ 34 #define ALPHA_ECOFF_BADMAG(x) \ 35 ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD) 36 37 /* The object type is encoded in the f_flags. */ 38 #define F_ALPHA_OBJECT_TYPE_MASK 0x3000 39 #define F_ALPHA_NO_SHARED 0x1000 40 #define F_ALPHA_SHARABLE 0x2000 41 #define F_ALPHA_CALL_SHARED 0x3000 42 43 #define FILHDR struct external_filehdr 44 #define FILHSZ 24 45 46 /********************** AOUT "OPTIONAL HEADER" **********************/ 47 48 typedef struct external_aouthdr 49 { 50 unsigned char magic[2]; /* type of file */ 51 unsigned char vstamp[2]; /* version stamp */ 52 unsigned char bldrev[2]; /* ?? */ 53 unsigned char padding[2]; /* pad to quadword boundary */ 54 unsigned char tsize[8]; /* text size in bytes */ 55 unsigned char dsize[8]; /* initialized data " " */ 56 unsigned char bsize[8]; /* uninitialized data " " */ 57 unsigned char entry[8]; /* entry pt. */ 58 unsigned char text_start[8]; /* base of text used for this file */ 59 unsigned char data_start[8]; /* base of data used for this file */ 60 unsigned char bss_start[8]; /* base of bss used for this file */ 61 unsigned char gprmask[4]; /* bitmask of general registers used */ 62 unsigned char fprmask[4]; /* bitmask of floating point registers used */ 63 unsigned char gp_value[8]; /* value for gp register */ 64 } AOUTHDR; 65 66 /* compute size of a header */ 67 68 #define AOUTSZ 80 69 #define AOUTHDRSZ 80 70 71 /********************** SECTION HEADER **********************/ 72 73 struct external_scnhdr 74 { 75 unsigned char s_name[8]; /* section name */ 76 unsigned char s_paddr[8]; /* physical address, aliased s_nlib */ 77 unsigned char s_vaddr[8]; /* virtual address */ 78 unsigned char s_size[8]; /* section size */ 79 unsigned char s_scnptr[8]; /* file ptr to raw data for section */ 80 unsigned char s_relptr[8]; /* file ptr to relocation */ 81 unsigned char s_lnnoptr[8]; /* file ptr to line numbers */ 82 unsigned char s_nreloc[2]; /* number of relocation entries */ 83 unsigned char s_nlnno[2]; /* number of line number entries*/ 84 unsigned char s_flags[4]; /* flags */ 85 }; 86 87 #define SCNHDR struct external_scnhdr 88 #define SCNHSZ 64 89 90 /********************** RELOCATION DIRECTIVES **********************/ 91 92 struct external_reloc 93 { 94 unsigned char r_vaddr[8]; 95 unsigned char r_symndx[4]; 96 unsigned char r_bits[4]; 97 }; 98 99 #define RELOC struct external_reloc 100 #define RELSZ 16 101 102 /* Constants to unpack the r_bits field. The Alpha seems to always be 103 little endian, so I haven't bothered to define big endian variants 104 of these. */ 105 106 #define RELOC_BITS0_TYPE_LITTLE 0xff 107 #define RELOC_BITS0_TYPE_SH_LITTLE 0 108 109 #define RELOC_BITS1_EXTERN_LITTLE 0x01 110 111 #define RELOC_BITS1_OFFSET_LITTLE 0x7e 112 #define RELOC_BITS1_OFFSET_SH_LITTLE 1 113 114 #define RELOC_BITS1_RESERVED_LITTLE 0x80 115 #define RELOC_BITS1_RESERVED_SH_LITTLE 7 116 #define RELOC_BITS2_RESERVED_LITTLE 0xff 117 #define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1 118 #define RELOC_BITS3_RESERVED_LITTLE 0x03 119 #define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9 120 121 #define RELOC_BITS3_SIZE_LITTLE 0xfc 122 #define RELOC_BITS3_SIZE_SH_LITTLE 2 123 124 /* The r_type field in a reloc is one of the following values. */ 125 #define ALPHA_R_IGNORE 0 126 #define ALPHA_R_REFLONG 1 127 #define ALPHA_R_REFQUAD 2 128 #define ALPHA_R_GPREL32 3 129 #define ALPHA_R_LITERAL 4 130 #define ALPHA_R_LITUSE 5 131 #define ALPHA_R_GPDISP 6 132 #define ALPHA_R_BRADDR 7 133 #define ALPHA_R_HINT 8 134 #define ALPHA_R_SREL16 9 135 #define ALPHA_R_SREL32 10 136 #define ALPHA_R_SREL64 11 137 #define ALPHA_R_OP_PUSH 12 138 #define ALPHA_R_OP_STORE 13 139 #define ALPHA_R_OP_PSUB 14 140 #define ALPHA_R_OP_PRSHIFT 15 141 #define ALPHA_R_GPVALUE 16 142 #define ALPHA_R_GPRELHIGH 17 143 #define ALPHA_R_GPRELLOW 18 144 #define ALPHA_R_IMMED 19 145 146 /* Overloaded reloc value used by Net- and OpenBSD. */ 147 #define ALPHA_R_LITERALSLEAZY 17 148 149 /* With ALPHA_R_LITUSE, the r_size field is one of the following values. */ 150 #define ALPHA_R_LU_BASE 1 151 #define ALPHA_R_LU_BYTOFF 2 152 #define ALPHA_R_LU_JSR 3 153 154 /* With ALPHA_R_IMMED, the r_size field is one of the following values. */ 155 #define ALPHA_R_IMMED_GP_16 1 156 #define ALPHA_R_IMMED_GP_HI32 2 157 #define ALPHA_R_IMMED_SCN_HI32 3 158 #define ALPHA_R_IMMED_BR_HI32 4 159 #define ALPHA_R_IMMED_LO32 5 160 161 /********************** SYMBOLIC INFORMATION **********************/ 162 163 /* Written by John Gilmore. */ 164 165 /* ECOFF uses COFF-like section structures, but its own symbol format. 166 This file defines the symbol format in fields whose size and alignment 167 will not vary on different host systems. */ 168 169 /* File header as a set of bytes */ 170 171 struct hdr_ext 172 { 173 unsigned char h_magic[2]; 174 unsigned char h_vstamp[2]; 175 unsigned char h_ilineMax[4]; 176 unsigned char h_idnMax[4]; 177 unsigned char h_ipdMax[4]; 178 unsigned char h_isymMax[4]; 179 unsigned char h_ioptMax[4]; 180 unsigned char h_iauxMax[4]; 181 unsigned char h_issMax[4]; 182 unsigned char h_issExtMax[4]; 183 unsigned char h_ifdMax[4]; 184 unsigned char h_crfd[4]; 185 unsigned char h_iextMax[4]; 186 unsigned char h_cbLine[8]; 187 unsigned char h_cbLineOffset[8]; 188 unsigned char h_cbDnOffset[8]; 189 unsigned char h_cbPdOffset[8]; 190 unsigned char h_cbSymOffset[8]; 191 unsigned char h_cbOptOffset[8]; 192 unsigned char h_cbAuxOffset[8]; 193 unsigned char h_cbSsOffset[8]; 194 unsigned char h_cbSsExtOffset[8]; 195 unsigned char h_cbFdOffset[8]; 196 unsigned char h_cbRfdOffset[8]; 197 unsigned char h_cbExtOffset[8]; 198 }; 199 200 /* File descriptor external record */ 201 202 struct fdr_ext 203 { 204 unsigned char f_adr[8]; 205 unsigned char f_cbLineOffset[8]; 206 unsigned char f_cbLine[8]; 207 unsigned char f_cbSs[8]; 208 unsigned char f_rss[4]; 209 unsigned char f_issBase[4]; 210 unsigned char f_isymBase[4]; 211 unsigned char f_csym[4]; 212 unsigned char f_ilineBase[4]; 213 unsigned char f_cline[4]; 214 unsigned char f_ioptBase[4]; 215 unsigned char f_copt[4]; 216 unsigned char f_ipdFirst[4]; 217 unsigned char f_cpd[4]; 218 unsigned char f_iauxBase[4]; 219 unsigned char f_caux[4]; 220 unsigned char f_rfdBase[4]; 221 unsigned char f_crfd[4]; 222 unsigned char f_bits1[1]; 223 unsigned char f_bits2[3]; 224 unsigned char f_padding[4]; 225 }; 226 227 #define FDR_BITS1_LANG_BIG 0xF8 228 #define FDR_BITS1_LANG_SH_BIG 3 229 #define FDR_BITS1_LANG_LITTLE 0x1F 230 #define FDR_BITS1_LANG_SH_LITTLE 0 231 232 #define FDR_BITS1_FMERGE_BIG 0x04 233 #define FDR_BITS1_FMERGE_LITTLE 0x20 234 235 #define FDR_BITS1_FREADIN_BIG 0x02 236 #define FDR_BITS1_FREADIN_LITTLE 0x40 237 238 #define FDR_BITS1_FBIGENDIAN_BIG 0x01 239 #define FDR_BITS1_FBIGENDIAN_LITTLE 0x80 240 241 #define FDR_BITS2_GLEVEL_BIG 0xC0 242 #define FDR_BITS2_GLEVEL_SH_BIG 6 243 #define FDR_BITS2_GLEVEL_LITTLE 0x03 244 #define FDR_BITS2_GLEVEL_SH_LITTLE 0 245 246 /* We ignore the `reserved' field in bits2. */ 247 248 /* Procedure descriptor external record */ 249 250 struct pdr_ext { 251 unsigned char p_adr[8]; 252 unsigned char p_cbLineOffset[8]; 253 unsigned char p_isym[4]; 254 unsigned char p_iline[4]; 255 unsigned char p_regmask[4]; 256 unsigned char p_regoffset[4]; 257 unsigned char p_iopt[4]; 258 unsigned char p_fregmask[4]; 259 unsigned char p_fregoffset[4]; 260 unsigned char p_frameoffset[4]; 261 unsigned char p_lnLow[4]; 262 unsigned char p_lnHigh[4]; 263 unsigned char p_gp_prologue[1]; 264 unsigned char p_bits1[1]; 265 unsigned char p_bits2[1]; 266 unsigned char p_localoff[1]; 267 unsigned char p_framereg[2]; 268 unsigned char p_pcreg[2]; 269 }; 270 271 #define PDR_BITS1_GP_USED_BIG 0x80 272 #define PDR_BITS1_REG_FRAME_BIG 0x40 273 #define PDR_BITS1_PROF_BIG 0x20 274 #define PDR_BITS1_RESERVED_BIG 0x1f 275 #define PDR_BITS1_RESERVED_SH_LEFT_BIG 8 276 #define PDR_BITS2_RESERVED_BIG 0xff 277 #define PDR_BITS2_RESERVED_SH_BIG 0 278 279 #define PDR_BITS1_GP_USED_LITTLE 0x01 280 #define PDR_BITS1_REG_FRAME_LITTLE 0x02 281 #define PDR_BITS1_PROF_LITTLE 0x04 282 #define PDR_BITS1_RESERVED_LITTLE 0xf8 283 #define PDR_BITS1_RESERVED_SH_LITTLE 3 284 #define PDR_BITS2_RESERVED_LITTLE 0xff 285 #define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5 286 287 /* Line numbers */ 288 289 struct line_ext { 290 unsigned char l_line[4]; 291 }; 292 293 /* Symbol external record */ 294 295 struct sym_ext { 296 unsigned char s_value[8]; 297 unsigned char s_iss[4]; 298 unsigned char s_bits1[1]; 299 unsigned char s_bits2[1]; 300 unsigned char s_bits3[1]; 301 unsigned char s_bits4[1]; 302 }; 303 304 #define SYM_BITS1_ST_BIG 0xFC 305 #define SYM_BITS1_ST_SH_BIG 2 306 #define SYM_BITS1_ST_LITTLE 0x3F 307 #define SYM_BITS1_ST_SH_LITTLE 0 308 309 #define SYM_BITS1_SC_BIG 0x03 310 #define SYM_BITS1_SC_SH_LEFT_BIG 3 311 #define SYM_BITS1_SC_LITTLE 0xC0 312 #define SYM_BITS1_SC_SH_LITTLE 6 313 314 #define SYM_BITS2_SC_BIG 0xE0 315 #define SYM_BITS2_SC_SH_BIG 5 316 #define SYM_BITS2_SC_LITTLE 0x07 317 #define SYM_BITS2_SC_SH_LEFT_LITTLE 2 318 319 #define SYM_BITS2_RESERVED_BIG 0x10 320 #define SYM_BITS2_RESERVED_LITTLE 0x08 321 322 #define SYM_BITS2_INDEX_BIG 0x0F 323 #define SYM_BITS2_INDEX_SH_LEFT_BIG 16 324 #define SYM_BITS2_INDEX_LITTLE 0xF0 325 #define SYM_BITS2_INDEX_SH_LITTLE 4 326 327 #define SYM_BITS3_INDEX_SH_LEFT_BIG 8 328 #define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4 329 330 #define SYM_BITS4_INDEX_SH_LEFT_BIG 0 331 #define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12 332 333 /* External symbol external record */ 334 335 struct ext_ext { 336 struct sym_ext es_asym; 337 unsigned char es_bits1[1]; 338 unsigned char es_bits2[3]; 339 unsigned char es_ifd[4]; 340 }; 341 342 #define EXT_BITS1_JMPTBL_BIG 0x80 343 #define EXT_BITS1_JMPTBL_LITTLE 0x01 344 345 #define EXT_BITS1_COBOL_MAIN_BIG 0x40 346 #define EXT_BITS1_COBOL_MAIN_LITTLE 0x02 347 348 #define EXT_BITS1_WEAKEXT_BIG 0x20 349 #define EXT_BITS1_WEAKEXT_LITTLE 0x04 350 351 /* Dense numbers external record */ 352 353 struct dnr_ext { 354 unsigned char d_rfd[4]; 355 unsigned char d_index[4]; 356 }; 357 358 /* Relative file descriptor */ 359 360 struct rfd_ext { 361 unsigned char rfd[4]; 362 }; 363 364 /* Optimizer symbol external record */ 365 366 struct opt_ext { 367 unsigned char o_bits1[1]; 368 unsigned char o_bits2[1]; 369 unsigned char o_bits3[1]; 370 unsigned char o_bits4[1]; 371 struct rndx_ext o_rndx; 372 unsigned char o_offset[4]; 373 }; 374 375 #define OPT_BITS2_VALUE_SH_LEFT_BIG 16 376 #define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0 377 378 #define OPT_BITS3_VALUE_SH_LEFT_BIG 8 379 #define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8 380 381 #define OPT_BITS4_VALUE_SH_LEFT_BIG 0 382 #define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16 383