| 1 | /* Support for the generic parts of PE/PEI, for BFD. |
| 2 | Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 3 | 2005, 2006 Free Software Foundation, Inc. |
| 4 | Written by Cygnus Solutions. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | /* Most of this hacked by Steve Chamberlain, |
| 23 | sac@cygnus.com |
| 24 | |
| 25 | PE/PEI rearrangement (and code added): Donn Terry |
| 26 | Softway Systems, Inc. */ |
| 27 | |
| 28 | /* Hey look, some documentation [and in a place you expect to find it]! |
| 29 | |
| 30 | The main reference for the pei format is "Microsoft Portable Executable |
| 31 | and Common Object File Format Specification 4.1". Get it if you need to |
| 32 | do some serious hacking on this code. |
| 33 | |
| 34 | Another reference: |
| 35 | "Peering Inside the PE: A Tour of the Win32 Portable Executable |
| 36 | File Format", MSJ 1994, Volume 9. |
| 37 | |
| 38 | The *sole* difference between the pe format and the pei format is that the |
| 39 | latter has an MSDOS 2.0 .exe header on the front that prints the message |
| 40 | "This app must be run under Windows." (or some such). |
| 41 | (FIXME: Whether that statement is *really* true or not is unknown. |
| 42 | Are there more subtle differences between pe and pei formats? |
| 43 | For now assume there aren't. If you find one, then for God sakes |
| 44 | document it here!) |
| 45 | |
| 46 | The Microsoft docs use the word "image" instead of "executable" because |
| 47 | the former can also refer to a DLL (shared library). Confusion can arise |
| 48 | because the `i' in `pei' also refers to "image". The `pe' format can |
| 49 | also create images (i.e. executables), it's just that to run on a win32 |
| 50 | system you need to use the pei format. |
| 51 | |
| 52 | FIXME: Please add more docs here so the next poor fool that has to hack |
| 53 | on this code has a chance of getting something accomplished without |
| 54 | wasting too much time. */ |
| 55 | |
| 56 | #include "libpei.h" |
| 57 | |
| 58 | static bfd_boolean (*pe_saved_coff_bfd_print_private_bfd_data) (bfd *, void *) = |
| 59 | #ifndef coff_bfd_print_private_bfd_data |
| 60 | NULL; |
| 61 | #else |
| 62 | coff_bfd_print_private_bfd_data; |
| 63 | #undef coff_bfd_print_private_bfd_data |
| 64 | #endif |
| 65 | |
| 66 | static bfd_boolean pe_print_private_bfd_data (bfd *, void *); |
| 67 | #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data |
| 68 | |
| 69 | static bfd_boolean (*pe_saved_coff_bfd_copy_private_bfd_data) (bfd *, bfd *) = |
| 70 | #ifndef coff_bfd_copy_private_bfd_data |
| 71 | NULL; |
| 72 | #else |
| 73 | coff_bfd_copy_private_bfd_data; |
| 74 | #undef coff_bfd_copy_private_bfd_data |
| 75 | #endif |
| 76 | |
| 77 | static bfd_boolean pe_bfd_copy_private_bfd_data (bfd *, bfd *); |
| 78 | #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data |
| 79 | |
| 80 | #define coff_mkobject pe_mkobject |
| 81 | #define coff_mkobject_hook pe_mkobject_hook |
| 82 | |
| 83 | #ifdef COFF_IMAGE_WITH_PE |
| 84 | /* This structure contains static variables used by the ILF code. */ |
| 85 | typedef asection * asection_ptr; |
| 86 | |
| 87 | typedef struct |
| 88 | { |
| 89 | bfd * abfd; |
| 90 | bfd_byte * data; |
| 91 | struct bfd_in_memory * bim; |
| 92 | unsigned short magic; |
| 93 | |
| 94 | arelent * reltab; |
| 95 | unsigned int relcount; |
| 96 | |
| 97 | coff_symbol_type * sym_cache; |
| 98 | coff_symbol_type * sym_ptr; |
| 99 | unsigned int sym_index; |
| 100 | |
| 101 | unsigned int * sym_table; |
| 102 | unsigned int * table_ptr; |
| 103 | |
| 104 | combined_entry_type * native_syms; |
| 105 | combined_entry_type * native_ptr; |
| 106 | |
| 107 | coff_symbol_type ** sym_ptr_table; |
| 108 | coff_symbol_type ** sym_ptr_ptr; |
| 109 | |
| 110 | unsigned int sec_index; |
| 111 | |
| 112 | char * string_table; |
| 113 | char * string_ptr; |
| 114 | char * end_string_ptr; |
| 115 | |
| 116 | SYMENT * esym_table; |
| 117 | SYMENT * esym_ptr; |
| 118 | |
| 119 | struct internal_reloc * int_reltab; |
| 120 | } |
| 121 | pe_ILF_vars; |
| 122 | #endif /* COFF_IMAGE_WITH_PE */ |
| 123 | \f |
| 124 | #ifndef NO_COFF_RELOCS |
| 125 | static void |
| 126 | coff_swap_reloc_in (bfd * abfd, void * src, void * dst) |
| 127 | { |
| 128 | RELOC *reloc_src = (RELOC *) src; |
| 129 | struct internal_reloc *reloc_dst = (struct internal_reloc *) dst; |
| 130 | |
| 131 | reloc_dst->r_vaddr = H_GET_32 (abfd, reloc_src->r_vaddr); |
| 132 | reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx); |
| 133 | reloc_dst->r_type = H_GET_16 (abfd, reloc_src->r_type); |
| 134 | #ifdef SWAP_IN_RELOC_OFFSET |
| 135 | reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET (abfd, reloc_src->r_offset); |
| 136 | #endif |
| 137 | } |
| 138 | |
| 139 | static unsigned int |
| 140 | coff_swap_reloc_out (bfd * abfd, void * src, void * dst) |
| 141 | { |
| 142 | struct internal_reloc *reloc_src = (struct internal_reloc *) src; |
| 143 | struct external_reloc *reloc_dst = (struct external_reloc *) dst; |
| 144 | |
| 145 | H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr); |
| 146 | H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx); |
| 147 | H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type); |
| 148 | |
| 149 | #ifdef SWAP_OUT_RELOC_OFFSET |
| 150 | SWAP_OUT_RELOC_OFFSET (abfd, reloc_src->r_offset, reloc_dst->r_offset); |
| 151 | #endif |
| 152 | #ifdef SWAP_OUT_RELOC_EXTRA |
| 153 | SWAP_OUT_RELOC_EXTRA (abfd, reloc_src, reloc_dst); |
| 154 | #endif |
| 155 | return RELSZ; |
| 156 | } |
| 157 | #endif /* not NO_COFF_RELOCS */ |
| 158 | |
| 159 | static void |
| 160 | coff_swap_filehdr_in (bfd * abfd, void * src, void * dst) |
| 161 | { |
| 162 | FILHDR *filehdr_src = (FILHDR *) src; |
| 163 | struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst; |
| 164 | |
| 165 | filehdr_dst->f_magic = H_GET_16 (abfd, filehdr_src->f_magic); |
| 166 | filehdr_dst->f_nscns = H_GET_16 (abfd, filehdr_src->f_nscns); |
| 167 | filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->f_timdat); |
| 168 | filehdr_dst->f_nsyms = H_GET_32 (abfd, filehdr_src->f_nsyms); |
| 169 | filehdr_dst->f_flags = H_GET_16 (abfd, filehdr_src->f_flags); |
| 170 | filehdr_dst->f_symptr = H_GET_32 (abfd, filehdr_src->f_symptr); |
| 171 | |
| 172 | /* Other people's tools sometimes generate headers with an nsyms but |
| 173 | a zero symptr. */ |
| 174 | if (filehdr_dst->f_nsyms != 0 && filehdr_dst->f_symptr == 0) |
| 175 | { |
| 176 | filehdr_dst->f_nsyms = 0; |
| 177 | filehdr_dst->f_flags |= F_LSYMS; |
| 178 | } |
| 179 | |
| 180 | filehdr_dst->f_opthdr = H_GET_16 (abfd, filehdr_src-> f_opthdr); |
| 181 | } |
| 182 | |
| 183 | #ifdef COFF_IMAGE_WITH_PE |
| 184 | # define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out |
| 185 | #elif defined COFF_WITH_pex64 |
| 186 | # define coff_swap_filehdr_out _bfd_pex64_only_swap_filehdr_out |
| 187 | #elif defined COFF_WITH_pep |
| 188 | # define coff_swap_filehdr_out _bfd_pep_only_swap_filehdr_out |
| 189 | #else |
| 190 | # define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out |
| 191 | #endif |
| 192 | |
| 193 | static void |
| 194 | coff_swap_scnhdr_in (bfd * abfd, void * ext, void * in) |
| 195 | { |
| 196 | SCNHDR *scnhdr_ext = (SCNHDR *) ext; |
| 197 | struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in; |
| 198 | |
| 199 | memcpy (scnhdr_int->s_name, scnhdr_ext->s_name, sizeof (scnhdr_int->s_name)); |
| 200 | |
| 201 | scnhdr_int->s_vaddr = GET_SCNHDR_VADDR (abfd, scnhdr_ext->s_vaddr); |
| 202 | scnhdr_int->s_paddr = GET_SCNHDR_PADDR (abfd, scnhdr_ext->s_paddr); |
| 203 | scnhdr_int->s_size = GET_SCNHDR_SIZE (abfd, scnhdr_ext->s_size); |
| 204 | scnhdr_int->s_scnptr = GET_SCNHDR_SCNPTR (abfd, scnhdr_ext->s_scnptr); |
| 205 | scnhdr_int->s_relptr = GET_SCNHDR_RELPTR (abfd, scnhdr_ext->s_relptr); |
| 206 | scnhdr_int->s_lnnoptr = GET_SCNHDR_LNNOPTR (abfd, scnhdr_ext->s_lnnoptr); |
| 207 | scnhdr_int->s_flags = H_GET_32 (abfd, scnhdr_ext->s_flags); |
| 208 | |
| 209 | /* MS handles overflow of line numbers by carrying into the reloc |
| 210 | field (it appears). Since it's supposed to be zero for PE |
| 211 | *IMAGE* format, that's safe. This is still a bit iffy. */ |
| 212 | #ifdef COFF_IMAGE_WITH_PE |
| 213 | scnhdr_int->s_nlnno = (H_GET_16 (abfd, scnhdr_ext->s_nlnno) |
| 214 | + (H_GET_16 (abfd, scnhdr_ext->s_nreloc) << 16)); |
| 215 | scnhdr_int->s_nreloc = 0; |
| 216 | #else |
| 217 | scnhdr_int->s_nreloc = H_GET_16 (abfd, scnhdr_ext->s_nreloc); |
| 218 | scnhdr_int->s_nlnno = H_GET_16 (abfd, scnhdr_ext->s_nlnno); |
| 219 | #endif |
| 220 | |
| 221 | if (scnhdr_int->s_vaddr != 0) |
| 222 | { |
| 223 | scnhdr_int->s_vaddr += pe_data (abfd)->pe_opthdr.ImageBase; |
| 224 | /* Do not cut upper 32-bits for 64-bit vma. */ |
| 225 | #ifndef COFF_WITH_pex64 |
| 226 | scnhdr_int->s_vaddr &= 0xffffffff; |
| 227 | #endif |
| 228 | } |
| 229 | |
| 230 | #ifndef COFF_NO_HACK_SCNHDR_SIZE |
| 231 | /* If this section holds uninitialized data and is from an object file |
| 232 | or from an executable image that has not initialized the field, |
| 233 | or if the image is an executable file and the physical size is padded, |
| 234 | use the virtual size (stored in s_paddr) instead. */ |
| 235 | if (scnhdr_int->s_paddr > 0 |
| 236 | && (((scnhdr_int->s_flags & IMAGE_SCN_CNT_UNINITIALIZED_DATA) != 0 |
| 237 | && (! bfd_pe_executable_p (abfd) || scnhdr_int->s_size == 0)) |
| 238 | || (bfd_pe_executable_p (abfd) && scnhdr_int->s_size > scnhdr_int->s_paddr))) |
| 239 | /* This code used to set scnhdr_int->s_paddr to 0. However, |
| 240 | coff_set_alignment_hook stores s_paddr in virt_size, which |
| 241 | only works if it correctly holds the virtual size of the |
| 242 | section. */ |
| 243 | scnhdr_int->s_size = scnhdr_int->s_paddr; |
| 244 | #endif |
| 245 | } |
| 246 | |
| 247 | static bfd_boolean |
| 248 | pe_mkobject (bfd * abfd) |
| 249 | { |
| 250 | pe_data_type *pe; |
| 251 | bfd_size_type amt = sizeof (pe_data_type); |
| 252 | |
| 253 | abfd->tdata.pe_obj_data = (struct pe_tdata *) bfd_zalloc (abfd, amt); |
| 254 | |
| 255 | if (abfd->tdata.pe_obj_data == 0) |
| 256 | return FALSE; |
| 257 | |
| 258 | pe = pe_data (abfd); |
| 259 | |
| 260 | pe->coff.pe = 1; |
| 261 | |
| 262 | /* in_reloc_p is architecture dependent. */ |
| 263 | pe->in_reloc_p = in_reloc_p; |
| 264 | |
| 265 | #ifdef PEI_FORCE_MINIMUM_ALIGNMENT |
| 266 | pe->force_minimum_alignment = 1; |
| 267 | #endif |
| 268 | #ifdef PEI_TARGET_SUBSYSTEM |
| 269 | pe->target_subsystem = PEI_TARGET_SUBSYSTEM; |
| 270 | #endif |
| 271 | |
| 272 | return TRUE; |
| 273 | } |
| 274 | |
| 275 | /* Create the COFF backend specific information. */ |
| 276 | |
| 277 | static void * |
| 278 | pe_mkobject_hook (bfd * abfd, |
| 279 | void * filehdr, |
| 280 | void * aouthdr ATTRIBUTE_UNUSED) |
| 281 | { |
| 282 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 283 | pe_data_type *pe; |
| 284 | |
| 285 | if (! pe_mkobject (abfd)) |
| 286 | return NULL; |
| 287 | |
| 288 | pe = pe_data (abfd); |
| 289 | pe->coff.sym_filepos = internal_f->f_symptr; |
| 290 | /* These members communicate important constants about the symbol |
| 291 | table to GDB's symbol-reading code. These `constants' |
| 292 | unfortunately vary among coff implementations... */ |
| 293 | pe->coff.local_n_btmask = N_BTMASK; |
| 294 | pe->coff.local_n_btshft = N_BTSHFT; |
| 295 | pe->coff.local_n_tmask = N_TMASK; |
| 296 | pe->coff.local_n_tshift = N_TSHIFT; |
| 297 | pe->coff.local_symesz = SYMESZ; |
| 298 | pe->coff.local_auxesz = AUXESZ; |
| 299 | pe->coff.local_linesz = LINESZ; |
| 300 | |
| 301 | pe->coff.timestamp = internal_f->f_timdat; |
| 302 | |
| 303 | obj_raw_syment_count (abfd) = |
| 304 | obj_conv_table_size (abfd) = |
| 305 | internal_f->f_nsyms; |
| 306 | |
| 307 | pe->real_flags = internal_f->f_flags; |
| 308 | |
| 309 | if ((internal_f->f_flags & F_DLL) != 0) |
| 310 | pe->dll = 1; |
| 311 | |
| 312 | if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0) |
| 313 | abfd->flags |= HAS_DEBUG; |
| 314 | |
| 315 | #ifdef COFF_IMAGE_WITH_PE |
| 316 | if (aouthdr) |
| 317 | pe->pe_opthdr = ((struct internal_aouthdr *) aouthdr)->pe; |
| 318 | #endif |
| 319 | |
| 320 | #ifdef ARM |
| 321 | if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags)) |
| 322 | coff_data (abfd) ->flags = 0; |
| 323 | #endif |
| 324 | |
| 325 | return (void *) pe; |
| 326 | } |
| 327 | |
| 328 | static bfd_boolean |
| 329 | pe_print_private_bfd_data (bfd *abfd, void * vfile) |
| 330 | { |
| 331 | FILE *file = (FILE *) vfile; |
| 332 | |
| 333 | if (!_bfd_XX_print_private_bfd_data_common (abfd, vfile)) |
| 334 | return FALSE; |
| 335 | |
| 336 | if (pe_saved_coff_bfd_print_private_bfd_data == NULL) |
| 337 | return TRUE; |
| 338 | |
| 339 | fputc ('\n', file); |
| 340 | |
| 341 | return pe_saved_coff_bfd_print_private_bfd_data (abfd, vfile); |
| 342 | } |
| 343 | |
| 344 | /* Copy any private info we understand from the input bfd |
| 345 | to the output bfd. */ |
| 346 | |
| 347 | static bfd_boolean |
| 348 | pe_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 349 | { |
| 350 | /* PR binutils/716: Copy the large address aware flag. |
| 351 | XXX: Should we be copying other flags or other fields in the pe_data() |
| 352 | structure ? */ |
| 353 | if (pe_data (obfd) != NULL |
| 354 | && pe_data (ibfd) != NULL |
| 355 | && pe_data (ibfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE) |
| 356 | pe_data (obfd)->real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE; |
| 357 | |
| 358 | if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd, obfd)) |
| 359 | return FALSE; |
| 360 | |
| 361 | if (pe_saved_coff_bfd_copy_private_bfd_data) |
| 362 | return pe_saved_coff_bfd_copy_private_bfd_data (ibfd, obfd); |
| 363 | |
| 364 | return TRUE; |
| 365 | } |
| 366 | |
| 367 | #define coff_bfd_copy_private_section_data \ |
| 368 | _bfd_XX_bfd_copy_private_section_data |
| 369 | |
| 370 | #define coff_get_symbol_info _bfd_XX_get_symbol_info |
| 371 | |
| 372 | #ifdef COFF_IMAGE_WITH_PE |
| 373 | \f |
| 374 | /* Code to handle Microsoft's Image Library Format. |
| 375 | Also known as LINK6 format. |
| 376 | Documentation about this format can be found at: |
| 377 | |
| 378 | http://msdn.microsoft.com/library/specs/pecoff_section8.htm */ |
| 379 | |
| 380 | /* The following constants specify the sizes of the various data |
| 381 | structures that we have to create in order to build a bfd describing |
| 382 | an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6 |
| 383 | and SIZEOF_IDATA7 below is to allow for the possibility that we might |
| 384 | need a padding byte in order to ensure 16 bit alignment for the section's |
| 385 | contents. |
| 386 | |
| 387 | The value for SIZEOF_ILF_STRINGS is computed as follows: |
| 388 | |
| 389 | There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters |
| 390 | per symbol for their names (longest section name is .idata$x). |
| 391 | |
| 392 | There will be two symbols for the imported value, one the symbol name |
| 393 | and one with _imp__ prefixed. Allowing for the terminating nul's this |
| 394 | is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll). |
| 395 | |
| 396 | The strings in the string table must start STRING__SIZE_SIZE bytes into |
| 397 | the table in order to for the string lookup code in coffgen/coffcode to |
| 398 | work. */ |
| 399 | #define NUM_ILF_RELOCS 8 |
| 400 | #define NUM_ILF_SECTIONS 6 |
| 401 | #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS) |
| 402 | |
| 403 | #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache)) |
| 404 | #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table)) |
| 405 | #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms)) |
| 406 | #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table)) |
| 407 | #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table)) |
| 408 | #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab)) |
| 409 | #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab)) |
| 410 | #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \ |
| 411 | + 21 + strlen (source_dll) \ |
| 412 | + NUM_ILF_SECTIONS * 9 \ |
| 413 | + STRING_SIZE_SIZE) |
| 414 | #define SIZEOF_IDATA2 (5 * 4) |
| 415 | |
| 416 | /* For PEx64 idata4 & 5 have thumb size of 8 bytes. */ |
| 417 | #ifdef COFF_WITH_pex64 |
| 418 | #define SIZEOF_IDATA4 (2 * 4) |
| 419 | #define SIZEOF_IDATA5 (2 * 4) |
| 420 | #else |
| 421 | #define SIZEOF_IDATA4 (1 * 4) |
| 422 | #define SIZEOF_IDATA5 (1 * 4) |
| 423 | #endif |
| 424 | |
| 425 | #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1) |
| 426 | #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1) |
| 427 | #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata)) |
| 428 | |
| 429 | #define ILF_DATA_SIZE \ |
| 430 | sizeof (* vars.bim) \ |
| 431 | + SIZEOF_ILF_SYMS \ |
| 432 | + SIZEOF_ILF_SYM_TABLE \ |
| 433 | + SIZEOF_ILF_NATIVE_SYMS \ |
| 434 | + SIZEOF_ILF_SYM_PTR_TABLE \ |
| 435 | + SIZEOF_ILF_EXT_SYMS \ |
| 436 | + SIZEOF_ILF_RELOCS \ |
| 437 | + SIZEOF_ILF_INT_RELOCS \ |
| 438 | + SIZEOF_ILF_STRINGS \ |
| 439 | + SIZEOF_IDATA2 \ |
| 440 | + SIZEOF_IDATA4 \ |
| 441 | + SIZEOF_IDATA5 \ |
| 442 | + SIZEOF_IDATA6 \ |
| 443 | + SIZEOF_IDATA7 \ |
| 444 | + SIZEOF_ILF_SECTIONS \ |
| 445 | + MAX_TEXT_SECTION_SIZE |
| 446 | |
| 447 | /* Create an empty relocation against the given symbol. */ |
| 448 | |
| 449 | static void |
| 450 | pe_ILF_make_a_symbol_reloc (pe_ILF_vars * vars, |
| 451 | bfd_vma address, |
| 452 | bfd_reloc_code_real_type reloc, |
| 453 | struct bfd_symbol ** sym, |
| 454 | unsigned int sym_index) |
| 455 | { |
| 456 | arelent * entry; |
| 457 | struct internal_reloc * internal; |
| 458 | |
| 459 | entry = vars->reltab + vars->relcount; |
| 460 | internal = vars->int_reltab + vars->relcount; |
| 461 | |
| 462 | entry->address = address; |
| 463 | entry->addend = 0; |
| 464 | entry->howto = bfd_reloc_type_lookup (vars->abfd, reloc); |
| 465 | entry->sym_ptr_ptr = sym; |
| 466 | |
| 467 | internal->r_vaddr = address; |
| 468 | internal->r_symndx = sym_index; |
| 469 | internal->r_type = entry->howto->type; |
| 470 | |
| 471 | vars->relcount ++; |
| 472 | |
| 473 | BFD_ASSERT (vars->relcount <= NUM_ILF_RELOCS); |
| 474 | } |
| 475 | |
| 476 | /* Create an empty relocation against the given section. */ |
| 477 | |
| 478 | static void |
| 479 | pe_ILF_make_a_reloc (pe_ILF_vars * vars, |
| 480 | bfd_vma address, |
| 481 | bfd_reloc_code_real_type reloc, |
| 482 | asection_ptr sec) |
| 483 | { |
| 484 | pe_ILF_make_a_symbol_reloc (vars, address, reloc, sec->symbol_ptr_ptr, |
| 485 | coff_section_data (vars->abfd, sec)->i); |
| 486 | } |
| 487 | |
| 488 | /* Move the queued relocs into the given section. */ |
| 489 | |
| 490 | static void |
| 491 | pe_ILF_save_relocs (pe_ILF_vars * vars, |
| 492 | asection_ptr sec) |
| 493 | { |
| 494 | /* Make sure that there is somewhere to store the internal relocs. */ |
| 495 | if (coff_section_data (vars->abfd, sec) == NULL) |
| 496 | /* We should probably return an error indication here. */ |
| 497 | abort (); |
| 498 | |
| 499 | coff_section_data (vars->abfd, sec)->relocs = vars->int_reltab; |
| 500 | coff_section_data (vars->abfd, sec)->keep_relocs = TRUE; |
| 501 | |
| 502 | sec->relocation = vars->reltab; |
| 503 | sec->reloc_count = vars->relcount; |
| 504 | sec->flags |= SEC_RELOC; |
| 505 | |
| 506 | vars->reltab += vars->relcount; |
| 507 | vars->int_reltab += vars->relcount; |
| 508 | vars->relcount = 0; |
| 509 | |
| 510 | BFD_ASSERT ((bfd_byte *) vars->int_reltab < (bfd_byte *) vars->string_table); |
| 511 | } |
| 512 | |
| 513 | /* Create a global symbol and add it to the relevant tables. */ |
| 514 | |
| 515 | static void |
| 516 | pe_ILF_make_a_symbol (pe_ILF_vars * vars, |
| 517 | const char * prefix, |
| 518 | const char * symbol_name, |
| 519 | asection_ptr section, |
| 520 | flagword extra_flags) |
| 521 | { |
| 522 | coff_symbol_type * sym; |
| 523 | combined_entry_type * ent; |
| 524 | SYMENT * esym; |
| 525 | unsigned short sclass; |
| 526 | |
| 527 | if (extra_flags & BSF_LOCAL) |
| 528 | sclass = C_STAT; |
| 529 | else |
| 530 | sclass = C_EXT; |
| 531 | |
| 532 | #ifdef THUMBPEMAGIC |
| 533 | if (vars->magic == THUMBPEMAGIC) |
| 534 | { |
| 535 | if (extra_flags & BSF_FUNCTION) |
| 536 | sclass = C_THUMBEXTFUNC; |
| 537 | else if (extra_flags & BSF_LOCAL) |
| 538 | sclass = C_THUMBSTAT; |
| 539 | else |
| 540 | sclass = C_THUMBEXT; |
| 541 | } |
| 542 | #endif |
| 543 | |
| 544 | BFD_ASSERT (vars->sym_index < NUM_ILF_SYMS); |
| 545 | |
| 546 | sym = vars->sym_ptr; |
| 547 | ent = vars->native_ptr; |
| 548 | esym = vars->esym_ptr; |
| 549 | |
| 550 | /* Copy the symbol's name into the string table. */ |
| 551 | sprintf (vars->string_ptr, "%s%s", prefix, symbol_name); |
| 552 | |
| 553 | if (section == NULL) |
| 554 | section = (asection_ptr) & bfd_und_section; |
| 555 | |
| 556 | /* Initialise the external symbol. */ |
| 557 | H_PUT_32 (vars->abfd, vars->string_ptr - vars->string_table, |
| 558 | esym->e.e.e_offset); |
| 559 | H_PUT_16 (vars->abfd, section->target_index, esym->e_scnum); |
| 560 | esym->e_sclass[0] = sclass; |
| 561 | |
| 562 | /* The following initialisations are unnecessary - the memory is |
| 563 | zero initialised. They are just kept here as reminders. */ |
| 564 | |
| 565 | /* Initialise the internal symbol structure. */ |
| 566 | ent->u.syment.n_sclass = sclass; |
| 567 | ent->u.syment.n_scnum = section->target_index; |
| 568 | ent->u.syment._n._n_n._n_offset = (long) sym; |
| 569 | |
| 570 | sym->symbol.the_bfd = vars->abfd; |
| 571 | sym->symbol.name = vars->string_ptr; |
| 572 | sym->symbol.flags = BSF_EXPORT | BSF_GLOBAL | extra_flags; |
| 573 | sym->symbol.section = section; |
| 574 | sym->native = ent; |
| 575 | |
| 576 | * vars->table_ptr = vars->sym_index; |
| 577 | * vars->sym_ptr_ptr = sym; |
| 578 | |
| 579 | /* Adjust pointers for the next symbol. */ |
| 580 | vars->sym_index ++; |
| 581 | vars->sym_ptr ++; |
| 582 | vars->sym_ptr_ptr ++; |
| 583 | vars->table_ptr ++; |
| 584 | vars->native_ptr ++; |
| 585 | vars->esym_ptr ++; |
| 586 | vars->string_ptr += strlen (symbol_name) + strlen (prefix) + 1; |
| 587 | |
| 588 | BFD_ASSERT (vars->string_ptr < vars->end_string_ptr); |
| 589 | } |
| 590 | |
| 591 | /* Create a section. */ |
| 592 | |
| 593 | static asection_ptr |
| 594 | pe_ILF_make_a_section (pe_ILF_vars * vars, |
| 595 | const char * name, |
| 596 | unsigned int size, |
| 597 | flagword extra_flags) |
| 598 | { |
| 599 | asection_ptr sec; |
| 600 | flagword flags; |
| 601 | |
| 602 | sec = bfd_make_section_old_way (vars->abfd, name); |
| 603 | if (sec == NULL) |
| 604 | return NULL; |
| 605 | |
| 606 | flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_KEEP | SEC_IN_MEMORY; |
| 607 | |
| 608 | bfd_set_section_flags (vars->abfd, sec, flags | extra_flags); |
| 609 | |
| 610 | bfd_set_section_alignment (vars->abfd, sec, 2); |
| 611 | |
| 612 | /* Check that we will not run out of space. */ |
| 613 | BFD_ASSERT (vars->data + size < vars->bim->buffer + vars->bim->size); |
| 614 | |
| 615 | /* Set the section size and contents. The actual |
| 616 | contents are filled in by our parent. */ |
| 617 | bfd_set_section_size (vars->abfd, sec, (bfd_size_type) size); |
| 618 | sec->contents = vars->data; |
| 619 | sec->target_index = vars->sec_index ++; |
| 620 | |
| 621 | /* Advance data pointer in the vars structure. */ |
| 622 | vars->data += size; |
| 623 | |
| 624 | /* Skip the padding byte if it was not needed. |
| 625 | The logic here is that if the string length is odd, |
| 626 | then the entire string length, including the null byte, |
| 627 | is even and so the extra, padding byte, is not needed. */ |
| 628 | if (size & 1) |
| 629 | vars->data --; |
| 630 | |
| 631 | /* Create a coff_section_tdata structure for our use. */ |
| 632 | sec->used_by_bfd = (struct coff_section_tdata *) vars->data; |
| 633 | vars->data += sizeof (struct coff_section_tdata); |
| 634 | |
| 635 | BFD_ASSERT (vars->data <= vars->bim->buffer + vars->bim->size); |
| 636 | |
| 637 | /* Create a symbol to refer to this section. */ |
| 638 | pe_ILF_make_a_symbol (vars, "", name, sec, BSF_LOCAL); |
| 639 | |
| 640 | /* Cache the index to the symbol in the coff_section_data structure. */ |
| 641 | coff_section_data (vars->abfd, sec)->i = vars->sym_index - 1; |
| 642 | |
| 643 | return sec; |
| 644 | } |
| 645 | |
| 646 | /* This structure contains the code that goes into the .text section |
| 647 | in order to perform a jump into the DLL lookup table. The entries |
| 648 | in the table are index by the magic number used to represent the |
| 649 | machine type in the PE file. The contents of the data[] arrays in |
| 650 | these entries are stolen from the jtab[] arrays in ld/pe-dll.c. |
| 651 | The SIZE field says how many bytes in the DATA array are actually |
| 652 | used. The OFFSET field says where in the data array the address |
| 653 | of the .idata$5 section should be placed. */ |
| 654 | #define MAX_TEXT_SECTION_SIZE 32 |
| 655 | |
| 656 | typedef struct |
| 657 | { |
| 658 | unsigned short magic; |
| 659 | unsigned char data[MAX_TEXT_SECTION_SIZE]; |
| 660 | unsigned int size; |
| 661 | unsigned int offset; |
| 662 | } |
| 663 | jump_table; |
| 664 | |
| 665 | static jump_table jtab[] = |
| 666 | { |
| 667 | #ifdef I386MAGIC |
| 668 | { I386MAGIC, |
| 669 | { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 }, |
| 670 | 8, 2 |
| 671 | }, |
| 672 | #endif |
| 673 | |
| 674 | #ifdef AMD64MAGIC |
| 675 | { AMD64MAGIC, |
| 676 | { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 }, |
| 677 | 8, 2 |
| 678 | }, |
| 679 | #endif |
| 680 | |
| 681 | #ifdef MC68MAGIC |
| 682 | { MC68MAGIC, |
| 683 | { /* XXX fill me in */ }, |
| 684 | 0, 0 |
| 685 | }, |
| 686 | #endif |
| 687 | |
| 688 | #ifdef MIPS_ARCH_MAGIC_WINCE |
| 689 | { MIPS_ARCH_MAGIC_WINCE, |
| 690 | { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d, |
| 691 | 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 }, |
| 692 | 16, 0 |
| 693 | }, |
| 694 | #endif |
| 695 | |
| 696 | #ifdef SH_ARCH_MAGIC_WINCE |
| 697 | { SH_ARCH_MAGIC_WINCE, |
| 698 | { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, |
| 699 | 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 }, |
| 700 | 12, 8 |
| 701 | }, |
| 702 | #endif |
| 703 | |
| 704 | #ifdef ARMPEMAGIC |
| 705 | { ARMPEMAGIC, |
| 706 | { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0, |
| 707 | 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00}, |
| 708 | 12, 8 |
| 709 | }, |
| 710 | #endif |
| 711 | |
| 712 | #ifdef THUMBPEMAGIC |
| 713 | { THUMBPEMAGIC, |
| 714 | { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46, |
| 715 | 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 }, |
| 716 | 16, 12 |
| 717 | }, |
| 718 | #endif |
| 719 | { 0, { 0 }, 0, 0 } |
| 720 | }; |
| 721 | |
| 722 | #ifndef NUM_ENTRIES |
| 723 | #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0]) |
| 724 | #endif |
| 725 | |
| 726 | /* Build a full BFD from the information supplied in a ILF object. */ |
| 727 | |
| 728 | static bfd_boolean |
| 729 | pe_ILF_build_a_bfd (bfd * abfd, |
| 730 | unsigned int magic, |
| 731 | char * symbol_name, |
| 732 | char * source_dll, |
| 733 | unsigned int ordinal, |
| 734 | unsigned int types) |
| 735 | { |
| 736 | bfd_byte * ptr; |
| 737 | pe_ILF_vars vars; |
| 738 | struct internal_filehdr internal_f; |
| 739 | unsigned int import_type; |
| 740 | unsigned int import_name_type; |
| 741 | asection_ptr id4, id5, id6 = NULL, text = NULL; |
| 742 | coff_symbol_type ** imp_sym; |
| 743 | unsigned int imp_index; |
| 744 | |
| 745 | /* Decode and verify the types field of the ILF structure. */ |
| 746 | import_type = types & 0x3; |
| 747 | import_name_type = (types & 0x1c) >> 2; |
| 748 | |
| 749 | switch (import_type) |
| 750 | { |
| 751 | case IMPORT_CODE: |
| 752 | case IMPORT_DATA: |
| 753 | break; |
| 754 | |
| 755 | case IMPORT_CONST: |
| 756 | /* XXX code yet to be written. */ |
| 757 | _bfd_error_handler (_("%B: Unhandled import type; %x"), |
| 758 | abfd, import_type); |
| 759 | return FALSE; |
| 760 | |
| 761 | default: |
| 762 | _bfd_error_handler (_("%B: Unrecognised import type; %x"), |
| 763 | abfd, import_type); |
| 764 | return FALSE; |
| 765 | } |
| 766 | |
| 767 | switch (import_name_type) |
| 768 | { |
| 769 | case IMPORT_ORDINAL: |
| 770 | case IMPORT_NAME: |
| 771 | case IMPORT_NAME_NOPREFIX: |
| 772 | case IMPORT_NAME_UNDECORATE: |
| 773 | break; |
| 774 | |
| 775 | default: |
| 776 | _bfd_error_handler (_("%B: Unrecognised import name type; %x"), |
| 777 | abfd, import_name_type); |
| 778 | return FALSE; |
| 779 | } |
| 780 | |
| 781 | /* Initialise local variables. |
| 782 | |
| 783 | Note these are kept in a structure rather than being |
| 784 | declared as statics since bfd frowns on global variables. |
| 785 | |
| 786 | We are going to construct the contents of the BFD in memory, |
| 787 | so allocate all the space that we will need right now. */ |
| 788 | ptr = bfd_zalloc (abfd, (bfd_size_type) ILF_DATA_SIZE); |
| 789 | if (ptr == NULL) |
| 790 | return FALSE; |
| 791 | |
| 792 | /* Create a bfd_in_memory structure. */ |
| 793 | vars.bim = (struct bfd_in_memory *) ptr; |
| 794 | vars.bim->buffer = ptr; |
| 795 | vars.bim->size = ILF_DATA_SIZE; |
| 796 | ptr += sizeof (* vars.bim); |
| 797 | |
| 798 | /* Initialise the pointers to regions of the memory and the |
| 799 | other contents of the pe_ILF_vars structure as well. */ |
| 800 | vars.sym_cache = (coff_symbol_type *) ptr; |
| 801 | vars.sym_ptr = (coff_symbol_type *) ptr; |
| 802 | vars.sym_index = 0; |
| 803 | ptr += SIZEOF_ILF_SYMS; |
| 804 | |
| 805 | vars.sym_table = (unsigned int *) ptr; |
| 806 | vars.table_ptr = (unsigned int *) ptr; |
| 807 | ptr += SIZEOF_ILF_SYM_TABLE; |
| 808 | |
| 809 | vars.native_syms = (combined_entry_type *) ptr; |
| 810 | vars.native_ptr = (combined_entry_type *) ptr; |
| 811 | ptr += SIZEOF_ILF_NATIVE_SYMS; |
| 812 | |
| 813 | vars.sym_ptr_table = (coff_symbol_type **) ptr; |
| 814 | vars.sym_ptr_ptr = (coff_symbol_type **) ptr; |
| 815 | ptr += SIZEOF_ILF_SYM_PTR_TABLE; |
| 816 | |
| 817 | vars.esym_table = (SYMENT *) ptr; |
| 818 | vars.esym_ptr = (SYMENT *) ptr; |
| 819 | ptr += SIZEOF_ILF_EXT_SYMS; |
| 820 | |
| 821 | vars.reltab = (arelent *) ptr; |
| 822 | vars.relcount = 0; |
| 823 | ptr += SIZEOF_ILF_RELOCS; |
| 824 | |
| 825 | vars.int_reltab = (struct internal_reloc *) ptr; |
| 826 | ptr += SIZEOF_ILF_INT_RELOCS; |
| 827 | |
| 828 | vars.string_table = (char *) ptr; |
| 829 | vars.string_ptr = (char *) ptr + STRING_SIZE_SIZE; |
| 830 | ptr += SIZEOF_ILF_STRINGS; |
| 831 | vars.end_string_ptr = (char *) ptr; |
| 832 | |
| 833 | /* The remaining space in bim->buffer is used |
| 834 | by the pe_ILF_make_a_section() function. */ |
| 835 | vars.data = ptr; |
| 836 | vars.abfd = abfd; |
| 837 | vars.sec_index = 0; |
| 838 | vars.magic = magic; |
| 839 | |
| 840 | /* Create the initial .idata$<n> sections: |
| 841 | [.idata$2: Import Directory Table -- not needed] |
| 842 | .idata$4: Import Lookup Table |
| 843 | .idata$5: Import Address Table |
| 844 | |
| 845 | Note we do not create a .idata$3 section as this is |
| 846 | created for us by the linker script. */ |
| 847 | id4 = pe_ILF_make_a_section (& vars, ".idata$4", SIZEOF_IDATA4, 0); |
| 848 | id5 = pe_ILF_make_a_section (& vars, ".idata$5", SIZEOF_IDATA5, 0); |
| 849 | if (id4 == NULL || id5 == NULL) |
| 850 | return FALSE; |
| 851 | |
| 852 | /* Fill in the contents of these sections. */ |
| 853 | if (import_name_type == IMPORT_ORDINAL) |
| 854 | { |
| 855 | if (ordinal == 0) |
| 856 | /* XXX - treat as IMPORT_NAME ??? */ |
| 857 | abort (); |
| 858 | |
| 859 | #ifdef COFF_WITH_pex64 |
| 860 | ((unsigned int *) id4->contents)[0] = ordinal; |
| 861 | ((unsigned int *) id4->contents)[1] = 0x80000000; |
| 862 | ((unsigned int *) id5->contents)[0] = ordinal; |
| 863 | ((unsigned int *) id5->contents)[1] = 0x80000000; |
| 864 | #else |
| 865 | * (unsigned int *) id4->contents = ordinal | 0x80000000; |
| 866 | * (unsigned int *) id5->contents = ordinal | 0x80000000; |
| 867 | #endif |
| 868 | } |
| 869 | else |
| 870 | { |
| 871 | char * symbol; |
| 872 | unsigned int len; |
| 873 | |
| 874 | /* Create .idata$6 - the Hint Name Table. */ |
| 875 | id6 = pe_ILF_make_a_section (& vars, ".idata$6", SIZEOF_IDATA6, 0); |
| 876 | if (id6 == NULL) |
| 877 | return FALSE; |
| 878 | |
| 879 | /* If necessary, trim the import symbol name. */ |
| 880 | symbol = symbol_name; |
| 881 | |
| 882 | /* As used by MS compiler, '_', '@', and '?' are alternative |
| 883 | forms of USER_LABEL_PREFIX, with '?' for c++ mangled names, |
| 884 | '@' used for fastcall (in C), '_' everywhere else. Only one |
| 885 | of these is used for a symbol. We strip this leading char for |
| 886 | IMPORT_NAME_NOPREFIX and IMPORT_NAME_UNDECORATE as per the |
| 887 | PE COFF 6.0 spec (section 8.3, Import Name Type). */ |
| 888 | |
| 889 | if (import_name_type != IMPORT_NAME) |
| 890 | { |
| 891 | char c = symbol[0]; |
| 892 | if (c == '_' || c == '@' || c == '?') |
| 893 | symbol++; |
| 894 | } |
| 895 | |
| 896 | len = strlen (symbol); |
| 897 | if (import_name_type == IMPORT_NAME_UNDECORATE) |
| 898 | { |
| 899 | /* Truncate at the first '@'. */ |
| 900 | char *at = strchr (symbol, '@'); |
| 901 | |
| 902 | if (at != NULL) |
| 903 | len = at - symbol; |
| 904 | } |
| 905 | |
| 906 | id6->contents[0] = ordinal & 0xff; |
| 907 | id6->contents[1] = ordinal >> 8; |
| 908 | |
| 909 | memcpy ((char *) id6->contents + 2, symbol, len); |
| 910 | id6->contents[len + 2] = '\0'; |
| 911 | } |
| 912 | |
| 913 | if (import_name_type != IMPORT_ORDINAL) |
| 914 | { |
| 915 | pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6); |
| 916 | pe_ILF_save_relocs (&vars, id4); |
| 917 | |
| 918 | pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6); |
| 919 | pe_ILF_save_relocs (&vars, id5); |
| 920 | } |
| 921 | |
| 922 | /* Create extra sections depending upon the type of import we are dealing with. */ |
| 923 | switch (import_type) |
| 924 | { |
| 925 | int i; |
| 926 | |
| 927 | case IMPORT_CODE: |
| 928 | /* Create a .text section. |
| 929 | First we need to look up its contents in the jump table. */ |
| 930 | for (i = NUM_ENTRIES (jtab); i--;) |
| 931 | { |
| 932 | if (jtab[i].size == 0) |
| 933 | continue; |
| 934 | if (jtab[i].magic == magic) |
| 935 | break; |
| 936 | } |
| 937 | /* If we did not find a matching entry something is wrong. */ |
| 938 | if (i < 0) |
| 939 | abort (); |
| 940 | |
| 941 | /* Create the .text section. */ |
| 942 | text = pe_ILF_make_a_section (& vars, ".text", jtab[i].size, SEC_CODE); |
| 943 | if (text == NULL) |
| 944 | return FALSE; |
| 945 | |
| 946 | /* Copy in the jump code. */ |
| 947 | memcpy (text->contents, jtab[i].data, jtab[i].size); |
| 948 | |
| 949 | /* Create an import symbol. */ |
| 950 | pe_ILF_make_a_symbol (& vars, "__imp_", symbol_name, id5, 0); |
| 951 | imp_sym = vars.sym_ptr_ptr - 1; |
| 952 | imp_index = vars.sym_index - 1; |
| 953 | |
| 954 | /* Create a reloc for the data in the text section. */ |
| 955 | #ifdef MIPS_ARCH_MAGIC_WINCE |
| 956 | if (magic == MIPS_ARCH_MAGIC_WINCE) |
| 957 | { |
| 958 | pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 0, BFD_RELOC_HI16_S, |
| 959 | (struct bfd_symbol **) imp_sym, |
| 960 | imp_index); |
| 961 | pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_LO16, text); |
| 962 | pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 4, BFD_RELOC_LO16, |
| 963 | (struct bfd_symbol **) imp_sym, |
| 964 | imp_index); |
| 965 | } |
| 966 | else |
| 967 | #endif |
| 968 | pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) jtab[i].offset, |
| 969 | BFD_RELOC_32, (asymbol **) imp_sym, |
| 970 | imp_index); |
| 971 | |
| 972 | pe_ILF_save_relocs (& vars, text); |
| 973 | break; |
| 974 | |
| 975 | case IMPORT_DATA: |
| 976 | break; |
| 977 | |
| 978 | default: |
| 979 | /* XXX code not yet written. */ |
| 980 | abort (); |
| 981 | } |
| 982 | |
| 983 | /* Initialise the bfd. */ |
| 984 | memset (& internal_f, 0, sizeof (internal_f)); |
| 985 | |
| 986 | internal_f.f_magic = magic; |
| 987 | internal_f.f_symptr = 0; |
| 988 | internal_f.f_nsyms = 0; |
| 989 | internal_f.f_flags = F_AR32WR | F_LNNO; /* XXX is this correct ? */ |
| 990 | |
| 991 | if ( ! bfd_set_start_address (abfd, (bfd_vma) 0) |
| 992 | || ! bfd_coff_set_arch_mach_hook (abfd, & internal_f)) |
| 993 | return FALSE; |
| 994 | |
| 995 | if (bfd_coff_mkobject_hook (abfd, (void *) & internal_f, NULL) == NULL) |
| 996 | return FALSE; |
| 997 | |
| 998 | coff_data (abfd)->pe = 1; |
| 999 | #ifdef THUMBPEMAGIC |
| 1000 | if (vars.magic == THUMBPEMAGIC) |
| 1001 | /* Stop some linker warnings about thumb code not supporting interworking. */ |
| 1002 | coff_data (abfd)->flags |= F_INTERWORK | F_INTERWORK_SET; |
| 1003 | #endif |
| 1004 | |
| 1005 | /* Switch from file contents to memory contents. */ |
| 1006 | bfd_cache_close (abfd); |
| 1007 | |
| 1008 | abfd->iostream = (void *) vars.bim; |
| 1009 | abfd->flags |= BFD_IN_MEMORY /* | HAS_LOCALS */; |
| 1010 | abfd->where = 0; |
| 1011 | obj_sym_filepos (abfd) = 0; |
| 1012 | |
| 1013 | /* Now create a symbol describing the imported value. */ |
| 1014 | switch (import_type) |
| 1015 | { |
| 1016 | case IMPORT_CODE: |
| 1017 | pe_ILF_make_a_symbol (& vars, "", symbol_name, text, |
| 1018 | BSF_NOT_AT_END | BSF_FUNCTION); |
| 1019 | |
| 1020 | /* Create an import symbol for the DLL, without the |
| 1021 | .dll suffix. */ |
| 1022 | ptr = (bfd_byte *) strrchr (source_dll, '.'); |
| 1023 | if (ptr) |
| 1024 | * ptr = 0; |
| 1025 | pe_ILF_make_a_symbol (& vars, "__IMPORT_DESCRIPTOR_", source_dll, NULL, 0); |
| 1026 | if (ptr) |
| 1027 | * ptr = '.'; |
| 1028 | break; |
| 1029 | |
| 1030 | case IMPORT_DATA: |
| 1031 | /* Nothing to do here. */ |
| 1032 | break; |
| 1033 | |
| 1034 | default: |
| 1035 | /* XXX code not yet written. */ |
| 1036 | abort (); |
| 1037 | } |
| 1038 | |
| 1039 | /* Point the bfd at the symbol table. */ |
| 1040 | obj_symbols (abfd) = vars.sym_cache; |
| 1041 | bfd_get_symcount (abfd) = vars.sym_index; |
| 1042 | |
| 1043 | obj_raw_syments (abfd) = vars.native_syms; |
| 1044 | obj_raw_syment_count (abfd) = vars.sym_index; |
| 1045 | |
| 1046 | obj_coff_external_syms (abfd) = (void *) vars.esym_table; |
| 1047 | obj_coff_keep_syms (abfd) = TRUE; |
| 1048 | |
| 1049 | obj_convert (abfd) = vars.sym_table; |
| 1050 | obj_conv_table_size (abfd) = vars.sym_index; |
| 1051 | |
| 1052 | obj_coff_strings (abfd) = vars.string_table; |
| 1053 | obj_coff_keep_strings (abfd) = TRUE; |
| 1054 | |
| 1055 | abfd->flags |= HAS_SYMS; |
| 1056 | |
| 1057 | return TRUE; |
| 1058 | } |
| 1059 | |
| 1060 | /* We have detected a Image Library Format archive element. |
| 1061 | Decode the element and return the appropriate target. */ |
| 1062 | |
| 1063 | static const bfd_target * |
| 1064 | pe_ILF_object_p (bfd * abfd) |
| 1065 | { |
| 1066 | bfd_byte buffer[16]; |
| 1067 | bfd_byte * ptr; |
| 1068 | char * symbol_name; |
| 1069 | char * source_dll; |
| 1070 | unsigned int machine; |
| 1071 | bfd_size_type size; |
| 1072 | unsigned int ordinal; |
| 1073 | unsigned int types; |
| 1074 | unsigned int magic; |
| 1075 | |
| 1076 | /* Upon entry the first four buyes of the ILF header have |
| 1077 | already been read. Now read the rest of the header. */ |
| 1078 | if (bfd_bread (buffer, (bfd_size_type) 16, abfd) != 16) |
| 1079 | return NULL; |
| 1080 | |
| 1081 | ptr = buffer; |
| 1082 | |
| 1083 | /* We do not bother to check the version number. |
| 1084 | version = H_GET_16 (abfd, ptr); */ |
| 1085 | ptr += 2; |
| 1086 | |
| 1087 | machine = H_GET_16 (abfd, ptr); |
| 1088 | ptr += 2; |
| 1089 | |
| 1090 | /* Check that the machine type is recognised. */ |
| 1091 | magic = 0; |
| 1092 | |
| 1093 | switch (machine) |
| 1094 | { |
| 1095 | case IMAGE_FILE_MACHINE_UNKNOWN: |
| 1096 | case IMAGE_FILE_MACHINE_ALPHA: |
| 1097 | case IMAGE_FILE_MACHINE_ALPHA64: |
| 1098 | case IMAGE_FILE_MACHINE_IA64: |
| 1099 | break; |
| 1100 | |
| 1101 | case IMAGE_FILE_MACHINE_I386: |
| 1102 | #ifdef I386MAGIC |
| 1103 | magic = I386MAGIC; |
| 1104 | #endif |
| 1105 | break; |
| 1106 | |
| 1107 | case IMAGE_FILE_MACHINE_AMD64: |
| 1108 | #ifdef AMD64MAGIC |
| 1109 | magic = AMD64MAGIC; |
| 1110 | #endif |
| 1111 | break; |
| 1112 | |
| 1113 | case IMAGE_FILE_MACHINE_M68K: |
| 1114 | #ifdef MC68AGIC |
| 1115 | magic = MC68MAGIC; |
| 1116 | #endif |
| 1117 | break; |
| 1118 | |
| 1119 | case IMAGE_FILE_MACHINE_R3000: |
| 1120 | case IMAGE_FILE_MACHINE_R4000: |
| 1121 | case IMAGE_FILE_MACHINE_R10000: |
| 1122 | |
| 1123 | case IMAGE_FILE_MACHINE_MIPS16: |
| 1124 | case IMAGE_FILE_MACHINE_MIPSFPU: |
| 1125 | case IMAGE_FILE_MACHINE_MIPSFPU16: |
| 1126 | #ifdef MIPS_ARCH_MAGIC_WINCE |
| 1127 | magic = MIPS_ARCH_MAGIC_WINCE; |
| 1128 | #endif |
| 1129 | break; |
| 1130 | |
| 1131 | case IMAGE_FILE_MACHINE_SH3: |
| 1132 | case IMAGE_FILE_MACHINE_SH4: |
| 1133 | #ifdef SH_ARCH_MAGIC_WINCE |
| 1134 | magic = SH_ARCH_MAGIC_WINCE; |
| 1135 | #endif |
| 1136 | break; |
| 1137 | |
| 1138 | case IMAGE_FILE_MACHINE_ARM: |
| 1139 | #ifdef ARMPEMAGIC |
| 1140 | magic = ARMPEMAGIC; |
| 1141 | #endif |
| 1142 | break; |
| 1143 | |
| 1144 | case IMAGE_FILE_MACHINE_THUMB: |
| 1145 | #ifdef THUMBPEMAGIC |
| 1146 | { |
| 1147 | extern const bfd_target TARGET_LITTLE_SYM; |
| 1148 | |
| 1149 | if (abfd->xvec == & TARGET_LITTLE_SYM) |
| 1150 | magic = THUMBPEMAGIC; |
| 1151 | } |
| 1152 | #endif |
| 1153 | break; |
| 1154 | |
| 1155 | case IMAGE_FILE_MACHINE_POWERPC: |
| 1156 | /* We no longer support PowerPC. */ |
| 1157 | default: |
| 1158 | _bfd_error_handler |
| 1159 | (_("%B: Unrecognised machine type (0x%x)" |
| 1160 | " in Import Library Format archive"), |
| 1161 | abfd, machine); |
| 1162 | bfd_set_error (bfd_error_malformed_archive); |
| 1163 | |
| 1164 | return NULL; |
| 1165 | break; |
| 1166 | } |
| 1167 | |
| 1168 | if (magic == 0) |
| 1169 | { |
| 1170 | _bfd_error_handler |
| 1171 | (_("%B: Recognised but unhandled machine type (0x%x)" |
| 1172 | " in Import Library Format archive"), |
| 1173 | abfd, machine); |
| 1174 | bfd_set_error (bfd_error_wrong_format); |
| 1175 | |
| 1176 | return NULL; |
| 1177 | } |
| 1178 | |
| 1179 | /* We do not bother to check the date. |
| 1180 | date = H_GET_32 (abfd, ptr); */ |
| 1181 | ptr += 4; |
| 1182 | |
| 1183 | size = H_GET_32 (abfd, ptr); |
| 1184 | ptr += 4; |
| 1185 | |
| 1186 | if (size == 0) |
| 1187 | { |
| 1188 | _bfd_error_handler |
| 1189 | (_("%B: size field is zero in Import Library Format header"), abfd); |
| 1190 | bfd_set_error (bfd_error_malformed_archive); |
| 1191 | |
| 1192 | return NULL; |
| 1193 | } |
| 1194 | |
| 1195 | ordinal = H_GET_16 (abfd, ptr); |
| 1196 | ptr += 2; |
| 1197 | |
| 1198 | types = H_GET_16 (abfd, ptr); |
| 1199 | /* ptr += 2; */ |
| 1200 | |
| 1201 | /* Now read in the two strings that follow. */ |
| 1202 | ptr = bfd_alloc (abfd, size); |
| 1203 | if (ptr == NULL) |
| 1204 | return NULL; |
| 1205 | |
| 1206 | if (bfd_bread (ptr, size, abfd) != size) |
| 1207 | { |
| 1208 | bfd_release (abfd, ptr); |
| 1209 | return NULL; |
| 1210 | } |
| 1211 | |
| 1212 | symbol_name = (char *) ptr; |
| 1213 | source_dll = symbol_name + strlen (symbol_name) + 1; |
| 1214 | |
| 1215 | /* Verify that the strings are null terminated. */ |
| 1216 | if (ptr[size - 1] != 0 |
| 1217 | || (bfd_size_type) ((bfd_byte *) source_dll - ptr) >= size) |
| 1218 | { |
| 1219 | _bfd_error_handler |
| 1220 | (_("%B: string not null terminated in ILF object file."), abfd); |
| 1221 | bfd_set_error (bfd_error_malformed_archive); |
| 1222 | bfd_release (abfd, ptr); |
| 1223 | return NULL; |
| 1224 | } |
| 1225 | |
| 1226 | /* Now construct the bfd. */ |
| 1227 | if (! pe_ILF_build_a_bfd (abfd, magic, symbol_name, |
| 1228 | source_dll, ordinal, types)) |
| 1229 | { |
| 1230 | bfd_release (abfd, ptr); |
| 1231 | return NULL; |
| 1232 | } |
| 1233 | |
| 1234 | return abfd->xvec; |
| 1235 | } |
| 1236 | |
| 1237 | enum arch_type |
| 1238 | { |
| 1239 | arch_type_unknown, |
| 1240 | arch_type_i386, |
| 1241 | arch_type_x86_64 |
| 1242 | }; |
| 1243 | |
| 1244 | static enum arch_type |
| 1245 | pe_arch (const char *arch) |
| 1246 | { |
| 1247 | if (strcmp (arch, "i386") == 0 || strcmp (arch, "ia32") == 0) |
| 1248 | return arch_type_i386; |
| 1249 | |
| 1250 | if (strcmp (arch, "x86_64") == 0 || strcmp (arch, "x86-64") == 0) |
| 1251 | return arch_type_x86_64; |
| 1252 | |
| 1253 | return arch_type_unknown; |
| 1254 | } |
| 1255 | |
| 1256 | static const bfd_target * |
| 1257 | pe_bfd_object_p (bfd * abfd) |
| 1258 | { |
| 1259 | bfd_byte buffer[4]; |
| 1260 | struct external_PEI_DOS_hdr dos_hdr; |
| 1261 | struct external_PEI_IMAGE_hdr image_hdr; |
| 1262 | file_ptr offset; |
| 1263 | const bfd_target *target; |
| 1264 | |
| 1265 | /* Detect if this a Microsoft Import Library Format element. */ |
| 1266 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 |
| 1267 | || bfd_bread (buffer, (bfd_size_type) 4, abfd) != 4) |
| 1268 | { |
| 1269 | if (bfd_get_error () != bfd_error_system_call) |
| 1270 | bfd_set_error (bfd_error_wrong_format); |
| 1271 | return NULL; |
| 1272 | } |
| 1273 | |
| 1274 | if (H_GET_32 (abfd, buffer) == 0xffff0000) |
| 1275 | return pe_ILF_object_p (abfd); |
| 1276 | |
| 1277 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 |
| 1278 | || bfd_bread (&dos_hdr, (bfd_size_type) sizeof (dos_hdr), abfd) |
| 1279 | != sizeof (dos_hdr)) |
| 1280 | { |
| 1281 | if (bfd_get_error () != bfd_error_system_call) |
| 1282 | bfd_set_error (bfd_error_wrong_format); |
| 1283 | return NULL; |
| 1284 | } |
| 1285 | |
| 1286 | /* There are really two magic numbers involved; the magic number |
| 1287 | that says this is a NT executable (PEI) and the magic number that |
| 1288 | determines the architecture. The former is DOSMAGIC, stored in |
| 1289 | the e_magic field. The latter is stored in the f_magic field. |
| 1290 | If the NT magic number isn't valid, the architecture magic number |
| 1291 | could be mimicked by some other field (specifically, the number |
| 1292 | of relocs in section 3). Since this routine can only be called |
| 1293 | correctly for a PEI file, check the e_magic number here, and, if |
| 1294 | it doesn't match, clobber the f_magic number so that we don't get |
| 1295 | a false match. */ |
| 1296 | if (H_GET_16 (abfd, dos_hdr.e_magic) != DOSMAGIC) |
| 1297 | { |
| 1298 | bfd_set_error (bfd_error_wrong_format); |
| 1299 | return NULL; |
| 1300 | } |
| 1301 | |
| 1302 | offset = H_GET_32 (abfd, dos_hdr.e_lfanew); |
| 1303 | if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
| 1304 | || (bfd_bread (&image_hdr, (bfd_size_type) sizeof (image_hdr), abfd) |
| 1305 | != sizeof (image_hdr))) |
| 1306 | { |
| 1307 | if (bfd_get_error () != bfd_error_system_call) |
| 1308 | bfd_set_error (bfd_error_wrong_format); |
| 1309 | return NULL; |
| 1310 | } |
| 1311 | |
| 1312 | if (H_GET_32 (abfd, image_hdr.nt_signature) != 0x4550) |
| 1313 | { |
| 1314 | bfd_set_error (bfd_error_wrong_format); |
| 1315 | return NULL; |
| 1316 | } |
| 1317 | |
| 1318 | /* Here is the hack. coff_object_p wants to read filhsz bytes to |
| 1319 | pick up the COFF header for PE, see "struct external_PEI_filehdr" |
| 1320 | in include/coff/pe.h. We adjust so that that will work. */ |
| 1321 | if (bfd_seek (abfd, (file_ptr) (offset - sizeof (dos_hdr)), SEEK_SET) != 0) |
| 1322 | { |
| 1323 | if (bfd_get_error () != bfd_error_system_call) |
| 1324 | bfd_set_error (bfd_error_wrong_format); |
| 1325 | return NULL; |
| 1326 | } |
| 1327 | |
| 1328 | target = coff_object_p (abfd); |
| 1329 | if (target) |
| 1330 | { |
| 1331 | pe_data_type *pe = pe_data (abfd); |
| 1332 | struct internal_extra_pe_aouthdr *i = &pe->pe_opthdr; |
| 1333 | bfd_boolean efi = i->Subsystem == IMAGE_SUBSYSTEM_EFI_APPLICATION; |
| 1334 | enum arch_type arch; |
| 1335 | const bfd_target * const *target_ptr; |
| 1336 | |
| 1337 | /* Get the machine. */ |
| 1338 | if (bfd_target_efi_p (abfd->xvec)) |
| 1339 | arch = pe_arch (bfd_target_efi_arch (abfd->xvec)); |
| 1340 | else |
| 1341 | arch = pe_arch (bfd_target_pei_arch (abfd->xvec)); |
| 1342 | |
| 1343 | for (target_ptr = bfd_target_vector; *target_ptr != NULL; |
| 1344 | target_ptr++) |
| 1345 | { |
| 1346 | if (*target_ptr == target |
| 1347 | || (*target_ptr)->flavour != bfd_target_coff_flavour) |
| 1348 | continue; |
| 1349 | |
| 1350 | if (bfd_target_efi_p (*target_ptr)) |
| 1351 | { |
| 1352 | /* Skip incompatible arch. */ |
| 1353 | if (pe_arch (bfd_target_efi_arch (*target_ptr)) != arch) |
| 1354 | continue; |
| 1355 | |
| 1356 | if (efi) |
| 1357 | { |
| 1358 | /* TARGET_PTR is an EFI backend. Don't match |
| 1359 | TARGET with a EFI file. */ |
| 1360 | bfd_set_error (bfd_error_wrong_format); |
| 1361 | return NULL; |
| 1362 | } |
| 1363 | } |
| 1364 | else if (bfd_target_pei_p (*target_ptr)) |
| 1365 | { |
| 1366 | /* Skip incompatible arch. */ |
| 1367 | if (pe_arch (bfd_target_pei_arch (*target_ptr)) != arch) |
| 1368 | continue; |
| 1369 | |
| 1370 | if (!efi) |
| 1371 | { |
| 1372 | /* TARGET_PTR is a PE backend. Don't match |
| 1373 | TARGET with a PE file. */ |
| 1374 | bfd_set_error (bfd_error_wrong_format); |
| 1375 | return NULL; |
| 1376 | } |
| 1377 | } |
| 1378 | } |
| 1379 | } |
| 1380 | |
| 1381 | return target; |
| 1382 | } |
| 1383 | |
| 1384 | #define coff_object_p pe_bfd_object_p |
| 1385 | #endif /* COFF_IMAGE_WITH_PE */ |