1/* ECOFF support on Alpha machines. 2 coff/ecoff.h must be included before this file. 3 4 Copyright 2001, 2005 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 19 20/********************** FILE HEADER **********************/ 21 22struct 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#define ALPHA_ECOFF_COMPRESSEDMAG(x) \ 38 ((x).f_magic == ALPHA_MAGIC_COMPRESSED) 39 40/* The object type is encoded in the f_flags. */ 41#define F_ALPHA_OBJECT_TYPE_MASK 0x3000 42#define F_ALPHA_NO_SHARED 0x1000 43#define F_ALPHA_SHARABLE 0x2000 44#define F_ALPHA_CALL_SHARED 0x3000 45 46#define FILHDR struct external_filehdr 47#define FILHSZ 24 48 49/********************** AOUT "OPTIONAL HEADER" **********************/ 50 51typedef struct external_aouthdr 52{ 53 unsigned char magic[2]; /* type of file */ 54 unsigned char vstamp[2]; /* version stamp */ 55 unsigned char bldrev[2]; /* ?? */ 56 unsigned char padding[2]; /* pad to quadword boundary */ 57 unsigned char tsize[8]; /* text size in bytes */ 58 unsigned char dsize[8]; /* initialized data " " */ 59 unsigned char bsize[8]; /* uninitialized data " " */ 60 unsigned char entry[8]; /* entry pt. */ 61 unsigned char text_start[8]; /* base of text used for this file */ 62 unsigned char data_start[8]; /* base of data used for this file */ 63 unsigned char bss_start[8]; /* base of bss used for this file */ 64 unsigned char gprmask[4]; /* bitmask of general registers used */ 65 unsigned char fprmask[4]; /* bitmask of floating point registers used */ 66 unsigned char gp_value[8]; /* value for gp register */ 67} AOUTHDR; 68 69/* compute size of a header */ 70 71#define AOUTSZ 80 72#define AOUTHDRSZ 80 73 74/********************** SECTION HEADER **********************/ 75 76struct external_scnhdr 77{ 78 unsigned char s_name[8]; /* section name */ 79 unsigned char s_paddr[8]; /* physical address, aliased s_nlib */ 80 unsigned char s_vaddr[8]; /* virtual address */ 81 unsigned char s_size[8]; /* section size */ 82 unsigned char s_scnptr[8]; /* file ptr to raw data for section */ 83 unsigned char s_relptr[8]; /* file ptr to relocation */ 84 unsigned char s_lnnoptr[8]; /* file ptr to line numbers */ 85 unsigned char s_nreloc[2]; /* number of relocation entries */ 86 unsigned char s_nlnno[2]; /* number of line number entries*/ 87 unsigned char s_flags[4]; /* flags */ 88}; 89 90#define SCNHDR struct external_scnhdr 91#define SCNHSZ 64 92 93/********************** RELOCATION DIRECTIVES **********************/ 94 95struct external_reloc 96{ 97 unsigned char r_vaddr[8]; 98 unsigned char r_symndx[4]; 99 unsigned char r_bits[4]; 100}; 101 102#define RELOC struct external_reloc 103#define RELSZ 16 104 105/* Constants to unpack the r_bits field. The Alpha seems to always be 106 little endian, so I haven't bothered to define big endian variants 107 of these. */ 108 109#define RELOC_BITS0_TYPE_LITTLE 0xff 110#define RELOC_BITS0_TYPE_SH_LITTLE 0 111 112#define RELOC_BITS1_EXTERN_LITTLE 0x01 113 114#define RELOC_BITS1_OFFSET_LITTLE 0x7e 115#define RELOC_BITS1_OFFSET_SH_LITTLE 1 116 117#define RELOC_BITS1_RESERVED_LITTLE 0x80 118#define RELOC_BITS1_RESERVED_SH_LITTLE 7 119#define RELOC_BITS2_RESERVED_LITTLE 0xff 120#define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1 121#define RELOC_BITS3_RESERVED_LITTLE 0x03 122#define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9 123 124#define RELOC_BITS3_SIZE_LITTLE 0xfc 125#define RELOC_BITS3_SIZE_SH_LITTLE 2 126 127/* The r_type field in a reloc is one of the following values. */ 128#define ALPHA_R_IGNORE 0 129#define ALPHA_R_REFLONG 1 130#define ALPHA_R_REFQUAD 2 131#define ALPHA_R_GPREL32 3 132#define ALPHA_R_LITERAL 4 133#define ALPHA_R_LITUSE 5 134#define ALPHA_R_GPDISP 6 135#define ALPHA_R_BRADDR 7 136#define ALPHA_R_HINT 8 137#define ALPHA_R_SREL16 9 138#define ALPHA_R_SREL32 10 139#define ALPHA_R_SREL64 11 140#define ALPHA_R_OP_PUSH 12 141#define ALPHA_R_OP_STORE 13 142#define ALPHA_R_OP_PSUB 14 143#define ALPHA_R_OP_PRSHIFT 15 144#define ALPHA_R_GPVALUE 16 145#define ALPHA_R_GPRELHIGH 17 146#define ALPHA_R_GPRELLOW 18 147#define ALPHA_R_IMMED 19 148 149/* Overloaded reloc value used by Net- and OpenBSD. */ 150#define ALPHA_R_LITERALSLEAZY 17 151 152/* With ALPHA_R_LITUSE, the r_size field is one of the following values. */ 153#define ALPHA_R_LU_BASE 1 154#define ALPHA_R_LU_BYTOFF 2 155#define ALPHA_R_LU_JSR 3 156 157/* With ALPHA_R_IMMED, the r_size field is one of the following values. */ 158#define ALPHA_R_IMMED_GP_16 1 159#define ALPHA_R_IMMED_GP_HI32 2 160#define ALPHA_R_IMMED_SCN_HI32 3 161#define ALPHA_R_IMMED_BR_HI32 4 162#define ALPHA_R_IMMED_LO32 5 163 164/********************** SYMBOLIC INFORMATION **********************/ 165 166/* Written by John Gilmore. */ 167 168/* ECOFF uses COFF-like section structures, but its own symbol format. 169 This file defines the symbol format in fields whose size and alignment 170 will not vary on different host systems. */ 171 172/* File header as a set of bytes */ 173 174struct hdr_ext 175{ 176 unsigned char h_magic[2]; 177 unsigned char h_vstamp[2]; 178 unsigned char h_ilineMax[4]; 179 unsigned char h_idnMax[4]; 180 unsigned char h_ipdMax[4]; 181 unsigned char h_isymMax[4]; 182 unsigned char h_ioptMax[4]; 183 unsigned char h_iauxMax[4]; 184 unsigned char h_issMax[4]; 185 unsigned char h_issExtMax[4]; 186 unsigned char h_ifdMax[4]; 187 unsigned char h_crfd[4]; 188 unsigned char h_iextMax[4]; 189 unsigned char h_cbLine[8]; 190 unsigned char h_cbLineOffset[8]; 191 unsigned char h_cbDnOffset[8]; 192 unsigned char h_cbPdOffset[8]; 193 unsigned char h_cbSymOffset[8]; 194 unsigned char h_cbOptOffset[8]; 195 unsigned char h_cbAuxOffset[8]; 196 unsigned char h_cbSsOffset[8]; 197 unsigned char h_cbSsExtOffset[8]; 198 unsigned char h_cbFdOffset[8]; 199 unsigned char h_cbRfdOffset[8]; 200 unsigned char h_cbExtOffset[8]; 201}; 202 203/* File descriptor external record */ 204 205struct fdr_ext 206{ 207 unsigned char f_adr[8]; 208 unsigned char f_cbLineOffset[8]; 209 unsigned char f_cbLine[8]; 210 unsigned char f_cbSs[8]; 211 unsigned char f_rss[4]; 212 unsigned char f_issBase[4]; 213 unsigned char f_isymBase[4]; 214 unsigned char f_csym[4]; 215 unsigned char f_ilineBase[4]; 216 unsigned char f_cline[4]; 217 unsigned char f_ioptBase[4]; 218 unsigned char f_copt[4]; 219 unsigned char f_ipdFirst[4]; 220 unsigned char f_cpd[4]; 221 unsigned char f_iauxBase[4]; 222 unsigned char f_caux[4]; 223 unsigned char f_rfdBase[4]; 224 unsigned char f_crfd[4]; 225 unsigned char f_bits1[1]; 226 unsigned char f_bits2[3]; 227 unsigned char f_padding[4]; 228}; 229 230#define FDR_BITS1_LANG_BIG 0xF8 231#define FDR_BITS1_LANG_SH_BIG 3 232#define FDR_BITS1_LANG_LITTLE 0x1F 233#define FDR_BITS1_LANG_SH_LITTLE 0 234 235#define FDR_BITS1_FMERGE_BIG 0x04 236#define FDR_BITS1_FMERGE_LITTLE 0x20 237 238#define FDR_BITS1_FREADIN_BIG 0x02 239#define FDR_BITS1_FREADIN_LITTLE 0x40 240 241#define FDR_BITS1_FBIGENDIAN_BIG 0x01 242#define FDR_BITS1_FBIGENDIAN_LITTLE 0x80 243 244#define FDR_BITS2_GLEVEL_BIG 0xC0 245#define FDR_BITS2_GLEVEL_SH_BIG 6 246#define FDR_BITS2_GLEVEL_LITTLE 0x03 247#define FDR_BITS2_GLEVEL_SH_LITTLE 0 248 249/* We ignore the `reserved' field in bits2. */ 250 251/* Procedure descriptor external record */ 252 253struct pdr_ext { 254 unsigned char p_adr[8]; 255 unsigned char p_cbLineOffset[8]; 256 unsigned char p_isym[4]; 257 unsigned char p_iline[4]; 258 unsigned char p_regmask[4]; 259 unsigned char p_regoffset[4]; 260 unsigned char p_iopt[4]; 261 unsigned char p_fregmask[4]; 262 unsigned char p_fregoffset[4]; 263 unsigned char p_frameoffset[4]; 264 unsigned char p_lnLow[4]; 265 unsigned char p_lnHigh[4]; 266 unsigned char p_gp_prologue[1]; 267 unsigned char p_bits1[1]; 268 unsigned char p_bits2[1]; 269 unsigned char p_localoff[1]; 270 unsigned char p_framereg[2]; 271 unsigned char p_pcreg[2]; 272}; 273 274#define PDR_BITS1_GP_USED_BIG 0x80 275#define PDR_BITS1_REG_FRAME_BIG 0x40 276#define PDR_BITS1_PROF_BIG 0x20 277#define PDR_BITS1_RESERVED_BIG 0x1f 278#define PDR_BITS1_RESERVED_SH_LEFT_BIG 8 279#define PDR_BITS2_RESERVED_BIG 0xff 280#define PDR_BITS2_RESERVED_SH_BIG 0 281 282#define PDR_BITS1_GP_USED_LITTLE 0x01 283#define PDR_BITS1_REG_FRAME_LITTLE 0x02 284#define PDR_BITS1_PROF_LITTLE 0x04 285#define PDR_BITS1_RESERVED_LITTLE 0xf8 286#define PDR_BITS1_RESERVED_SH_LITTLE 3 287#define PDR_BITS2_RESERVED_LITTLE 0xff 288#define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5 289 290/* Line numbers */ 291 292struct line_ext { 293 unsigned char l_line[4]; 294}; 295 296/* Symbol external record */ 297 298struct sym_ext { 299 unsigned char s_value[8]; 300 unsigned char s_iss[4]; 301 unsigned char s_bits1[1]; 302 unsigned char s_bits2[1]; 303 unsigned char s_bits3[1]; 304 unsigned char s_bits4[1]; 305}; 306 307#define SYM_BITS1_ST_BIG 0xFC 308#define SYM_BITS1_ST_SH_BIG 2 309#define SYM_BITS1_ST_LITTLE 0x3F 310#define SYM_BITS1_ST_SH_LITTLE 0 311 312#define SYM_BITS1_SC_BIG 0x03 313#define SYM_BITS1_SC_SH_LEFT_BIG 3 314#define SYM_BITS1_SC_LITTLE 0xC0 315#define SYM_BITS1_SC_SH_LITTLE 6 316 317#define SYM_BITS2_SC_BIG 0xE0 318#define SYM_BITS2_SC_SH_BIG 5 319#define SYM_BITS2_SC_LITTLE 0x07 320#define SYM_BITS2_SC_SH_LEFT_LITTLE 2 321 322#define SYM_BITS2_RESERVED_BIG 0x10 323#define SYM_BITS2_RESERVED_LITTLE 0x08 324 325#define SYM_BITS2_INDEX_BIG 0x0F 326#define SYM_BITS2_INDEX_SH_LEFT_BIG 16 327#define SYM_BITS2_INDEX_LITTLE 0xF0 328#define SYM_BITS2_INDEX_SH_LITTLE 4 329 330#define SYM_BITS3_INDEX_SH_LEFT_BIG 8 331#define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4 332 333#define SYM_BITS4_INDEX_SH_LEFT_BIG 0 334#define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12 335 336/* External symbol external record */ 337 338struct ext_ext { 339 struct sym_ext es_asym; 340 unsigned char es_bits1[1]; 341 unsigned char es_bits2[3]; 342 unsigned char es_ifd[4]; 343}; 344 345#define EXT_BITS1_JMPTBL_BIG 0x80 346#define EXT_BITS1_JMPTBL_LITTLE 0x01 347 348#define EXT_BITS1_COBOL_MAIN_BIG 0x40 349#define EXT_BITS1_COBOL_MAIN_LITTLE 0x02 350 351#define EXT_BITS1_WEAKEXT_BIG 0x20 352#define EXT_BITS1_WEAKEXT_LITTLE 0x04 353 354/* Dense numbers external record */ 355 356struct dnr_ext { 357 unsigned char d_rfd[4]; 358 unsigned char d_index[4]; 359}; 360 361/* Relative file descriptor */ 362 363struct rfd_ext { 364 unsigned char rfd[4]; 365}; 366 367/* Optimizer symbol external record */ 368 369struct opt_ext { 370 unsigned char o_bits1[1]; 371 unsigned char o_bits2[1]; 372 unsigned char o_bits3[1]; 373 unsigned char o_bits4[1]; 374 struct rndx_ext o_rndx; 375 unsigned char o_offset[4]; 376}; 377 378#define OPT_BITS2_VALUE_SH_LEFT_BIG 16 379#define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0 380 381#define OPT_BITS3_VALUE_SH_LEFT_BIG 8 382#define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8 383 384#define OPT_BITS4_VALUE_SH_LEFT_BIG 0 385#define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16 386