1 /* a.out.h 2 3 Copyright 1997, 1998, 1999, 2001 Red Hat, Inc. 4 5 This file is part of Cygwin. 6 7 This software is a copyrighted work licensed under the terms of the 8 Cygwin license. Please consult the file "CYGWIN_LICENSE" for 9 details. */ 10 11 #ifndef _A_OUT_H_ 12 #define _A_OUT_H_ 13 14 #ifdef __cplusplus 15 extern "C" { 16 #endif 17 #define COFF_IMAGE_WITH_PE 18 #define COFF_LONG_SECTION_NAMES 19 20 /*** coff information for Intel 386/486. */ 21 22 23 /********************** FILE HEADER **********************/ 24 25 struct external_filehdr { 26 short f_magic; /* magic number */ 27 short f_nscns; /* number of sections */ 28 host_ulong f_timdat; /* time & date stamp */ 29 host_ulong f_symptr; /* file pointer to symtab */ 30 host_ulong f_nsyms; /* number of symtab entries */ 31 short f_opthdr; /* sizeof(optional hdr) */ 32 short f_flags; /* flags */ 33 }; 34 35 /* Bits for f_flags: 36 * F_RELFLG relocation info stripped from file 37 * F_EXEC file is executable (no unresolved external references) 38 * F_LNNO line numbers stripped from file 39 * F_LSYMS local symbols stripped from file 40 * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) 41 */ 42 43 #define F_RELFLG (0x0001) 44 #define F_EXEC (0x0002) 45 #define F_LNNO (0x0004) 46 #define F_LSYMS (0x0008) 47 48 49 50 #define I386MAGIC 0x14c 51 #define I386PTXMAGIC 0x154 52 #define I386AIXMAGIC 0x175 53 54 /* This is Lynx's all-platform magic number for executables. */ 55 56 #define LYNXCOFFMAGIC 0415 57 58 #define I386BADMAG(x) (((x).f_magic != I386MAGIC) \ 59 && (x).f_magic != I386AIXMAGIC \ 60 && (x).f_magic != I386PTXMAGIC \ 61 && (x).f_magic != LYNXCOFFMAGIC) 62 63 #define FILHDR struct external_filehdr 64 #define FILHSZ 20 65 66 67 /********************** AOUT "OPTIONAL HEADER"= 68 **********************/ 69 70 71 typedef struct 72 { 73 unsigned short magic; /* type of file */ 74 unsigned short vstamp; /* version stamp */ 75 host_ulong tsize; /* text size in bytes, padded to FW bdry*/ 76 host_ulong dsize; /* initialized data " " */ 77 host_ulong bsize; /* uninitialized data " " */ 78 host_ulong entry; /* entry pt. */ 79 host_ulong text_start; /* base of text used for this file */ 80 host_ulong data_start; /* base of data used for this file= 81 */ 82 } 83 AOUTHDR; 84 85 #define AOUTSZ 28 86 #define AOUTHDRSZ 28 87 88 #define OMAGIC 0404 /* object files, eg as output */ 89 #define ZMAGIC 0413 /* demand load format, eg normal ld output */ 90 #define STMAGIC 0401 /* target shlib */ 91 #define SHMAGIC 0443 /* host shlib */ 92 93 94 /* define some NT default values */ 95 /* #define NT_IMAGE_BASE 0x400000 moved to internal.h */ 96 #define NT_SECTION_ALIGNMENT 0x1000 97 #define NT_FILE_ALIGNMENT 0x200 98 #define NT_DEF_RESERVE 0x100000 99 #define NT_DEF_COMMIT 0x1000 100 101 /********************** SECTION HEADER **********************/ 102 103 104 struct external_scnhdr { 105 char s_name[8]; /* section name */ 106 host_ulong s_paddr; /* physical address, offset 107 of last addr in scn */ 108 host_ulong s_vaddr; /* virtual address */ 109 host_ulong s_size; /* section size */ 110 host_ulong s_scnptr; /* file ptr to raw data for section */ 111 host_ulong s_relptr; /* file ptr to relocation */ 112 host_ulong s_lnnoptr; /* file ptr to line numbers */ 113 unsigned short s_nreloc; /* number of relocation entries */ 114 unsigned short s_nlnno; /* number of line number entries*/ 115 host_ulong s_flags; /* flags */ 116 }; 117 118 #define SCNHDR struct external_scnhdr 119 #define SCNHSZ 40 120 121 /* 122 * names of "special" sections 123 */ 124 #define _TEXT ".text" 125 #define _DATA ".data" 126 #define _BSS ".bss" 127 #define _COMMENT ".comment" 128 #define _LIB ".lib" 129 130 /********************** LINE NUMBERS **********************/ 131 132 /* 1 line number entry for every "breakpointable" source line in a section. 133 * Line numbers are grouped on a per function basis; first entry in a function 134 * grouping will have l_lnno = 0 and in place of physical address will be the 135 * symbol table index of the function name. 136 */ 137 struct external_lineno { 138 union { 139 host_ulong l_symndx; /* function name symbol index, iff l_lnno 0 */ 140 host_ulong l_paddr; /* (physical) address of line number */ 141 } l_addr; 142 unsigned short l_lnno; /* line number */ 143 }; 144 145 #define LINENO struct external_lineno 146 #define LINESZ 6 147 148 /********************** SYMBOLS **********************/ 149 150 #define E_SYMNMLEN 8 /* # characters in a symbol name */ 151 #define E_FILNMLEN 14 /* # characters in a file name */ 152 #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ 153 154 struct __attribute__((packed)) external_syment 155 { 156 union { 157 char e_name[E_SYMNMLEN]; 158 struct { 159 host_ulong e_zeroes; 160 host_ulong e_offset; 161 } e; 162 } e; 163 host_ulong e_value; 164 unsigned short e_scnum; 165 unsigned short e_type; 166 char e_sclass[1]; 167 char e_numaux[1]; 168 }; 169 170 #define N_BTMASK (0xf) 171 #define N_TMASK (0x30) 172 #define N_BTSHFT (4) 173 #define N_TSHIFT (2) 174 175 union external_auxent { 176 struct { 177 host_ulong x_tagndx; /* str, un, or enum tag indx */ 178 union { 179 struct { 180 unsigned short x_lnno; /* declaration line number */ 181 unsigned short x_size; /* str/union/array size */ 182 } x_lnsz; 183 host_ulong x_fsize; /* size of function */ 184 } x_misc; 185 union { 186 struct { /* if ISFCN, tag, or .bb */ 187 host_ulong x_lnnoptr;/* ptr to fcn line # */ 188 host_ulong x_endndx; /* entry ndx past block end */ 189 } x_fcn; 190 struct { /* if ISARY, up to 4 dimen. */ 191 char x_dimen[E_DIMNUM][2]; 192 } x_ary; 193 } x_fcnary; 194 unsigned short x_tvndx; /* tv index */ 195 } x_sym; 196 197 union { 198 char x_fname[E_FILNMLEN]; 199 struct { 200 host_ulong x_zeroes; 201 host_ulong x_offset; 202 } x_n; 203 } x_file; 204 205 struct { 206 host_ulong x_scnlen; /* section length */ 207 unsigned short x_nreloc; /* # relocation entries */ 208 unsigned short x_nlinno; /* # line numbers */ 209 host_ulong x_checksum; /* section COMDAT checksum */ 210 unsigned short x_associated;/* COMDAT associated section index */ 211 char x_comdat[1]; /* COMDAT selection number */ 212 } x_scn; 213 214 struct { 215 host_ulong x_tvfill; /* tv fill value */ 216 unsigned short x_tvlen; /* length of .tv */ 217 char x_tvran[2][2]; /* tv range */ 218 } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ 219 220 }; 221 222 #define SYMENT struct external_syment 223 #define SYMESZ 18 224 #define AUXENT union external_auxent 225 #define AUXESZ 18 226 227 #define _ETEXT "etext" 228 229 /********************** RELOCATION DIRECTIVES **********************/ 230 231 struct external_reloc { 232 char r_vaddr[4]; 233 char r_symndx[4]; 234 char r_type[2]; 235 }; 236 237 #define RELOC struct external_reloc 238 #define RELSZ 10 239 240 /* end of coff/i386.h */ 241 242 /* PE COFF header information */ 243 244 #ifndef _PE_H 245 #define _PE_H 246 247 /* NT specific file attributes */ 248 #define IMAGE_FILE_RELOCS_STRIPPED 0x0001 249 #define IMAGE_FILE_EXECUTABLE_IMAGE 0x0002 250 #define IMAGE_FILE_LINE_NUMS_STRIPPED 0x0004 251 #define IMAGE_FILE_LOCAL_SYMS_STRIPPED 0x0008 252 #define IMAGE_FILE_BYTES_REVERSED_LO 0x0080 253 #define IMAGE_FILE_32BIT_MACHINE 0x0100 254 #define IMAGE_FILE_DEBUG_STRIPPED 0x0200 255 #define IMAGE_FILE_SYSTEM 0x1000 256 #define IMAGE_FILE_DLL 0x2000 257 #define IMAGE_FILE_BYTES_REVERSED_HI 0x8000 258 259 /* additional flags to be set for section headers to allow the NT loader to 260 read and write to the section data (to replace the addresses of data in 261 dlls for one thing); also to execute the section in .text's case= 262 */ 263 #define IMAGE_SCN_MEM_DISCARDABLE 0x02000000 264 #define IMAGE_SCN_MEM_EXECUTE 0x20000000 265 #define IMAGE_SCN_MEM_READ 0x40000000 266 #define IMAGE_SCN_MEM_WRITE 0x80000000 267 268 /* 269 * Section characteristics added for ppc-nt 270 */ 271 272 #define IMAGE_SCN_TYPE_NO_PAD 0x00000008 /* Reserved. */ 273 274 #define IMAGE_SCN_CNT_CODE 0x00000020 /* Section contains code. */ 275 #define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040 /* Section contains initialized data. */ 276 #define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080 /* Section contains uninitialized data. */ 277 278 #define IMAGE_SCN_LNK_OTHER 0x00000100 /* Reserved. */ 279 #define IMAGE_SCN_LNK_INFO 0x00000200 /* Section contains comments or some other type of information. */ 280 #define IMAGE_SCN_LNK_REMOVE 0x00000800 /* Section contents will not become part of image. */ 281 #define IMAGE_SCN_LNK_COMDAT 0x00001000 /* Section contents comdat. */ 282 283 #define IMAGE_SCN_MEM_FARDATA 0x00008000 284 285 #define IMAGE_SCN_MEM_PURGEABLE 0x00020000 286 #define IMAGE_SCN_MEM_16BIT 0x00020000 287 #define IMAGE_SCN_MEM_LOCKED 0x00040000 288 #define IMAGE_SCN_MEM_PRELOAD 0x00080000 289 290 #define IMAGE_SCN_ALIGN_1BYTES 0x00100000 291 #define IMAGE_SCN_ALIGN_2BYTES 0x00200000 292 #define IMAGE_SCN_ALIGN_4BYTES 0x00300000 293 #define IMAGE_SCN_ALIGN_8BYTES 0x00400000 294 #define IMAGE_SCN_ALIGN_16BYTES 0x00500000 /* Default alignment if no others are specified. */ 295 #define IMAGE_SCN_ALIGN_32BYTES 0x00600000 296 #define IMAGE_SCN_ALIGN_64BYTES 0x00700000 297 298 299 #define IMAGE_SCN_LNK_NRELOC_OVFL 0x01000000 /* Section contains extended relocations. */ 300 #define IMAGE_SCN_MEM_NOT_CACHED 0x04000000 /* Section is not cachable. */ 301 #define IMAGE_SCN_MEM_NOT_PAGED 0x08000000 /* Section is not pageable. */ 302 #define IMAGE_SCN_MEM_SHARED 0x10000000 /* Section is shareable. */ 303 304 /* COMDAT selection codes. */ 305 306 #define IMAGE_COMDAT_SELECT_NODUPLICATES (1) /* Warn if duplicates. */ 307 #define IMAGE_COMDAT_SELECT_ANY (2) /* No warning. */ 308 #define IMAGE_COMDAT_SELECT_SAME_SIZE (3) /* Warn if different size. */ 309 #define IMAGE_COMDAT_SELECT_EXACT_MATCH (4) /* Warn if different. */ 310 #define IMAGE_COMDAT_SELECT_ASSOCIATIVE (5) /* Base on other section. */ 311 312 /* Magic values that are true for all dos/nt implementations */ 313 #define DOSMAGIC 0x5a4d 314 #define NT_SIGNATURE 0x00004550 315 316 /* NT allows long filenames, we want to accommodate this. This may break 317 some of the bfd functions */ 318 #undef FILNMLEN 319 #define FILNMLEN 18 /* # characters in a file name */ 320 321 322 #ifdef COFF_IMAGE_WITH_PE 323 /* The filehdr is only weired in images */ 324 325 #undef FILHDR 326 struct external_PE_filehdr 327 { 328 /* DOS header fields */ 329 unsigned short e_magic; /* Magic number, 0x5a4d */ 330 unsigned short e_cblp; /* Bytes on last page of file, 0x90 */ 331 unsigned short e_cp; /* Pages in file, 0x3 */ 332 unsigned short e_crlc; /* Relocations, 0x0 */ 333 unsigned short e_cparhdr; /* Size of header in paragraphs, 0x4 */ 334 unsigned short e_minalloc; /* Minimum extra paragraphs needed, 0x0 */ 335 unsigned short e_maxalloc; /* Maximum extra paragraphs needed, 0xFFFF */ 336 unsigned short e_ss; /* Initial (relative) SS value, 0x0 */ 337 unsigned short e_sp; /* Initial SP value, 0xb8 */ 338 unsigned short e_csum; /* Checksum, 0x0 */ 339 unsigned short e_ip; /* Initial IP value, 0x0 */ 340 unsigned short e_cs; /* Initial (relative) CS value, 0x0 */ 341 unsigned short e_lfarlc; /* File address of relocation table, 0x40 */ 342 unsigned short e_ovno; /* Overlay number, 0x0 */ 343 char e_res[4][2]; /* Reserved words, all 0x0 */ 344 unsigned short e_oemid; /* OEM identifier (for e_oeminfo), 0x0 */ 345 unsigned short e_oeminfo; /* OEM information; e_oemid specific, 0x0 */ 346 char e_res2[10][2]; /* Reserved words, all 0x0 */ 347 host_ulong e_lfanew; /* File address of new exe header, 0x80 */ 348 char dos_message[16][4]; /* other stuff, always follow DOS header */ 349 unsigned int nt_signature; /* required NT signature, 0x4550 */ 350 351 /* From standard header */ 352 353 unsigned short f_magic; /* magic number */ 354 unsigned short f_nscns; /* number of sections */ 355 host_ulong f_timdat; /* time & date stamp */ 356 host_ulong f_symptr; /* file pointer to symtab */ 357 host_ulong f_nsyms; /* number of symtab entries */ 358 unsigned short f_opthdr; /* sizeof(optional hdr) */ 359 unsigned short f_flags; /* flags */ 360 }; 361 362 363 #define FILHDR struct external_PE_filehdr 364 #undef FILHSZ 365 #define FILHSZ 152 366 367 #endif 368 369 typedef struct 370 { 371 unsigned short magic; /* type of file */ 372 unsigned short vstamp; /* version stamp */ 373 host_ulong tsize; /* text size in bytes, padded to FW bdry*/ 374 host_ulong dsize; /* initialized data " " */ 375 host_ulong bsize; /* uninitialized data " " */ 376 host_ulong entry; /* entry pt. */ 377 host_ulong text_start; /* base of text used for this file */ 378 host_ulong data_start; /* base of all data used for this file */ 379 380 /* NT extra fields; see internal.h for descriptions */ 381 host_ulong ImageBase; 382 host_ulong SectionAlignment; 383 host_ulong FileAlignment; 384 unsigned short MajorOperatingSystemVersion; 385 unsigned short MinorOperatingSystemVersion; 386 unsigned short MajorImageVersion; 387 unsigned short MinorImageVersion; 388 unsigned short MajorSubsystemVersion; 389 unsigned short MinorSubsystemVersion; 390 char Reserved1[4]; 391 host_ulong SizeOfImage; 392 host_ulong SizeOfHeaders; 393 host_ulong CheckSum; 394 unsigned short Subsystem; 395 unsigned short DllCharacteristics; 396 host_ulong SizeOfStackReserve; 397 host_ulong SizeOfStackCommit; 398 host_ulong SizeOfHeapReserve; 399 host_ulong SizeOfHeapCommit; 400 host_ulong LoaderFlags; 401 host_ulong NumberOfRvaAndSizes; 402 /* IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES]; */ 403 char DataDirectory[16][2][4]; /* 16 entries, 2 elements/entry, 4 chars */ 404 405 } PEAOUTHDR; 406 407 408 #undef AOUTSZ 409 #define AOUTSZ (AOUTHDRSZ + 196) 410 411 #undef E_FILNMLEN 412 #define E_FILNMLEN 18 /* # characters in a file name */ 413 #endif 414 415 /* end of coff/pe.h */ 416 417 #define DT_NON (0) /* no derived type */ 418 #define DT_PTR (1) /* pointer */ 419 #define DT_FCN (2) /* function */ 420 #define DT_ARY (3) /* array */ 421 422 #define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT)) 423 #define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT)) 424 #define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT)) 425 426 #ifdef __cplusplus 427 } 428 #endif 429 430 #endif /* _A_OUT_H_ */ 431
