| 1 | /* BFD back-end for PowerPC Microsoft Portable Executable files. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 3 | 2000, 2001 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | Original version pieced together by Kim Knuttila (krk@cygnus.com) |
| 7 | |
| 8 | There is nothing new under the sun. This file draws a lot on other |
| 9 | coff files, in particular, those for the rs/6000, alpha, mips, and |
| 10 | intel backends, and the PE work for the arm. |
| 11 | |
| 12 | This file is part of BFD, the Binary File Descriptor library. |
| 13 | |
| 14 | This program is free software; you can redistribute it and/or modify |
| 15 | it under the terms of the GNU General Public License as published by |
| 16 | the Free Software Foundation; either version 2 of the License, or |
| 17 | (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, |
| 20 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | GNU General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, 59 Temple Place - Suite 330, |
| 27 | Boston, MA 02111-1307, USA. */ |
| 28 | |
| 29 | /* Current State: |
| 30 | - objdump works |
| 31 | - relocs generated by gas |
| 32 | - ld will link files, but they do not run. |
| 33 | - dlltool will not produce correct output in some .reloc cases, and will |
| 34 | not produce the right glue code for dll function calls. |
| 35 | */ |
| 36 | |
| 37 | #include "bfd.h" |
| 38 | #include "sysdep.h" |
| 39 | |
| 40 | #include "libbfd.h" |
| 41 | |
| 42 | #include "coff/powerpc.h" |
| 43 | #include "coff/internal.h" |
| 44 | |
| 45 | #include "coff/pe.h" |
| 46 | |
| 47 | #ifdef BADMAG |
| 48 | #undef BADMAG |
| 49 | #endif |
| 50 | |
| 51 | #define BADMAG(x) PPCBADMAG(x) |
| 52 | |
| 53 | #include "libcoff.h" |
| 54 | |
| 55 | /* This file is compiled more than once, but we only compile the |
| 56 | final_link routine once. */ |
| 57 | extern boolean ppc_bfd_coff_final_link |
| 58 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 59 | extern void dump_toc PARAMS ((PTR)); |
| 60 | |
| 61 | /* The toc is a set of bfd_vma fields. We use the fact that valid */ |
| 62 | /* addresses are even (i.e. the bit representing "1" is off) to allow */ |
| 63 | /* us to encode a little extra information in the field */ |
| 64 | /* - Unallocated addresses are intialized to 1. */ |
| 65 | /* - Allocated addresses are even numbers. */ |
| 66 | /* The first time we actually write a reference to the toc in the bfd, */ |
| 67 | /* we want to record that fact in a fixup file (if it is asked for), so */ |
| 68 | /* we keep track of whether or not an address has been written by marking */ |
| 69 | /* the low order bit with a "1" upon writing */ |
| 70 | |
| 71 | #define SET_UNALLOCATED(x) ((x) = 1) |
| 72 | #define IS_UNALLOCATED(x) ((x) == 1) |
| 73 | |
| 74 | #define IS_WRITTEN(x) ((x) & 1) |
| 75 | #define MARK_AS_WRITTEN(x) ((x) |= 1) |
| 76 | #define MAKE_ADDR_AGAIN(x) ((x) &= ~1) |
| 77 | |
| 78 | /* Turn on this check if you suspect something amiss in the hash tables */ |
| 79 | #ifdef DEBUG_HASH |
| 80 | |
| 81 | /* Need a 7 char string for an eye catcher */ |
| 82 | #define EYE "krkjunk" |
| 83 | |
| 84 | #define HASH_CHECK_DCL char eye_catcher[8]; |
| 85 | #define HASH_CHECK_INIT(ret) strcpy(ret->eye_catcher, EYE) |
| 86 | #define HASH_CHECK(addr) \ |
| 87 | if (strcmp(addr->eye_catcher, EYE) != 0) \ |
| 88 | { \ |
| 89 | fprintf (stderr,\ |
| 90 | _("File %s, line %d, Hash check failure, bad eye %8s\n"), \ |
| 91 | __FILE__, __LINE__, addr->eye_catcher); \ |
| 92 | abort (); \ |
| 93 | } |
| 94 | |
| 95 | #else |
| 96 | |
| 97 | #define HASH_CHECK_DCL |
| 98 | #define HASH_CHECK_INIT(ret) |
| 99 | #define HASH_CHECK(addr) |
| 100 | |
| 101 | #endif |
| 102 | |
| 103 | /* In order not to add an int to every hash table item for every coff |
| 104 | linker, we define our own hash table, derived from the coff one */ |
| 105 | |
| 106 | /* PE linker hash table entries. */ |
| 107 | |
| 108 | struct ppc_coff_link_hash_entry |
| 109 | { |
| 110 | struct coff_link_hash_entry root; /* First entry, as required */ |
| 111 | |
| 112 | /* As we wonder around the relocs, we'll keep the assigned toc_offset |
| 113 | here */ |
| 114 | bfd_vma toc_offset; /* Our addition, as required */ |
| 115 | int symbol_is_glue; |
| 116 | unsigned long int glue_insn; |
| 117 | |
| 118 | HASH_CHECK_DCL |
| 119 | }; |
| 120 | |
| 121 | /* PE linker hash table. */ |
| 122 | |
| 123 | struct ppc_coff_link_hash_table |
| 124 | { |
| 125 | struct coff_link_hash_table root; /* First entry, as required */ |
| 126 | }; |
| 127 | |
| 128 | static struct bfd_hash_entry *ppc_coff_link_hash_newfunc |
| 129 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, |
| 130 | const char *)); |
| 131 | static boolean ppc_coff_link_hash_table_init |
| 132 | PARAMS ((struct ppc_coff_link_hash_table *, bfd *, |
| 133 | struct bfd_hash_entry *(*) (struct bfd_hash_entry *, |
| 134 | struct bfd_hash_table *, |
| 135 | const char *))); |
| 136 | static struct bfd_link_hash_table *ppc_coff_link_hash_table_create |
| 137 | PARAMS ((bfd *)); |
| 138 | static boolean coff_ppc_relocate_section |
| 139 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 140 | struct internal_reloc *, struct internal_syment *, asection **)); |
| 141 | static reloc_howto_type *coff_ppc_rtype_to_howto |
| 142 | PARAMS ((bfd *, asection *, struct internal_reloc *, |
| 143 | struct coff_link_hash_entry *, struct internal_syment *, |
| 144 | bfd_vma *)); |
| 145 | |
| 146 | /* Routine to create an entry in the link hash table. */ |
| 147 | |
| 148 | static struct bfd_hash_entry * |
| 149 | ppc_coff_link_hash_newfunc (entry, table, string) |
| 150 | struct bfd_hash_entry *entry; |
| 151 | struct bfd_hash_table *table; |
| 152 | const char *string; |
| 153 | { |
| 154 | struct ppc_coff_link_hash_entry *ret = |
| 155 | (struct ppc_coff_link_hash_entry *) entry; |
| 156 | |
| 157 | /* Allocate the structure if it has not already been allocated by a |
| 158 | subclass. */ |
| 159 | if (ret == (struct ppc_coff_link_hash_entry *) NULL) |
| 160 | ret = (struct ppc_coff_link_hash_entry *) |
| 161 | bfd_hash_allocate (table, |
| 162 | sizeof (struct ppc_coff_link_hash_entry)); |
| 163 | |
| 164 | if (ret == (struct ppc_coff_link_hash_entry *) NULL) |
| 165 | return NULL; |
| 166 | |
| 167 | /* Call the allocation method of the superclass. */ |
| 168 | ret = ((struct ppc_coff_link_hash_entry *) |
| 169 | _bfd_coff_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 170 | table, string)); |
| 171 | |
| 172 | if (ret) |
| 173 | { |
| 174 | /* Initialize the local fields. */ |
| 175 | SET_UNALLOCATED(ret->toc_offset); |
| 176 | ret->symbol_is_glue = 0; |
| 177 | ret->glue_insn = 0; |
| 178 | |
| 179 | HASH_CHECK_INIT(ret); |
| 180 | } |
| 181 | |
| 182 | return (struct bfd_hash_entry *) ret; |
| 183 | } |
| 184 | |
| 185 | /* Initialize a PE linker hash table. */ |
| 186 | |
| 187 | static boolean |
| 188 | ppc_coff_link_hash_table_init (table, abfd, newfunc) |
| 189 | struct ppc_coff_link_hash_table *table; |
| 190 | bfd *abfd; |
| 191 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, |
| 192 | struct bfd_hash_table *, |
| 193 | const char *)); |
| 194 | { |
| 195 | return _bfd_coff_link_hash_table_init (&table->root, abfd, newfunc); |
| 196 | } |
| 197 | |
| 198 | /* Create a PE linker hash table. */ |
| 199 | |
| 200 | static struct bfd_link_hash_table * |
| 201 | ppc_coff_link_hash_table_create (abfd) |
| 202 | bfd *abfd; |
| 203 | { |
| 204 | struct ppc_coff_link_hash_table *ret; |
| 205 | |
| 206 | ret = ((struct ppc_coff_link_hash_table *) |
| 207 | bfd_alloc (abfd, sizeof (struct ppc_coff_link_hash_table))); |
| 208 | if (ret == NULL) |
| 209 | return NULL; |
| 210 | if (! ppc_coff_link_hash_table_init (ret, abfd, |
| 211 | ppc_coff_link_hash_newfunc)) |
| 212 | { |
| 213 | bfd_release (abfd, ret); |
| 214 | return (struct bfd_link_hash_table *) NULL; |
| 215 | } |
| 216 | return &ret->root.root; |
| 217 | } |
| 218 | |
| 219 | /* Now, tailor coffcode.h to use our hash stuff */ |
| 220 | |
| 221 | #define coff_bfd_link_hash_table_create ppc_coff_link_hash_table_create |
| 222 | \f |
| 223 | /* The nt loader points the toc register to &toc + 32768, in order to */ |
| 224 | /* use the complete range of a 16-bit displacement. We have to adjust */ |
| 225 | /* for this when we fix up loads displaced off the toc reg. */ |
| 226 | #define TOC_LOAD_ADJUSTMENT (-32768) |
| 227 | #define TOC_SECTION_NAME ".private.toc" |
| 228 | |
| 229 | /* The main body of code is in coffcode.h. */ |
| 230 | |
| 231 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3) |
| 232 | |
| 233 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
| 234 | from smaller values. Start with zero, widen, *then* decrement. */ |
| 235 | #define MINUS_ONE (((bfd_vma)0) - 1) |
| 236 | |
| 237 | /* these should definitely go in a header file somewhere... */ |
| 238 | |
| 239 | /* NOP */ |
| 240 | #define IMAGE_REL_PPC_ABSOLUTE 0x0000 |
| 241 | |
| 242 | /* 64-bit address */ |
| 243 | #define IMAGE_REL_PPC_ADDR64 0x0001 |
| 244 | |
| 245 | /* 32-bit address */ |
| 246 | #define IMAGE_REL_PPC_ADDR32 0x0002 |
| 247 | |
| 248 | /* 26-bit address, shifted left 2 (branch absolute) */ |
| 249 | #define IMAGE_REL_PPC_ADDR24 0x0003 |
| 250 | |
| 251 | /* 16-bit address */ |
| 252 | #define IMAGE_REL_PPC_ADDR16 0x0004 |
| 253 | |
| 254 | /* 16-bit address, shifted left 2 (load doubleword) */ |
| 255 | #define IMAGE_REL_PPC_ADDR14 0x0005 |
| 256 | |
| 257 | /* 26-bit PC-relative offset, shifted left 2 (branch relative) */ |
| 258 | #define IMAGE_REL_PPC_REL24 0x0006 |
| 259 | |
| 260 | /* 16-bit PC-relative offset, shifted left 2 (br cond relative) */ |
| 261 | #define IMAGE_REL_PPC_REL14 0x0007 |
| 262 | |
| 263 | /* 16-bit offset from TOC base */ |
| 264 | #define IMAGE_REL_PPC_TOCREL16 0x0008 |
| 265 | |
| 266 | /* 16-bit offset from TOC base, shifted left 2 (load doubleword) */ |
| 267 | #define IMAGE_REL_PPC_TOCREL14 0x0009 |
| 268 | |
| 269 | /* 32-bit addr w/o image base */ |
| 270 | #define IMAGE_REL_PPC_ADDR32NB 0x000A |
| 271 | |
| 272 | /* va of containing section (as in an image sectionhdr) */ |
| 273 | #define IMAGE_REL_PPC_SECREL 0x000B |
| 274 | |
| 275 | /* sectionheader number */ |
| 276 | #define IMAGE_REL_PPC_SECTION 0x000C |
| 277 | |
| 278 | /* substitute TOC restore instruction iff symbol is glue code */ |
| 279 | #define IMAGE_REL_PPC_IFGLUE 0x000D |
| 280 | |
| 281 | /* symbol is glue code; virtual address is TOC restore instruction */ |
| 282 | #define IMAGE_REL_PPC_IMGLUE 0x000E |
| 283 | |
| 284 | /* va of containing section (limited to 16 bits) */ |
| 285 | #define IMAGE_REL_PPC_SECREL16 0x000F |
| 286 | |
| 287 | /* stuff to handle immediate data when the number of bits in the */ |
| 288 | /* data is greater than the number of bits in the immediate field */ |
| 289 | /* We need to do (usually) 32 bit arithmetic on 16 bit chunks */ |
| 290 | #define IMAGE_REL_PPC_REFHI 0x0010 |
| 291 | #define IMAGE_REL_PPC_REFLO 0x0011 |
| 292 | #define IMAGE_REL_PPC_PAIR 0x0012 |
| 293 | |
| 294 | /* This is essentially the same as tocrel16, with TOCDEFN assumed */ |
| 295 | #define IMAGE_REL_PPC_TOCREL16_DEFN 0x0013 |
| 296 | |
| 297 | /* Flag bits in IMAGE_RELOCATION.TYPE */ |
| 298 | |
| 299 | /* subtract reloc value rather than adding it */ |
| 300 | #define IMAGE_REL_PPC_NEG 0x0100 |
| 301 | |
| 302 | /* fix branch prediction bit to predict branch taken */ |
| 303 | #define IMAGE_REL_PPC_BRTAKEN 0x0200 |
| 304 | |
| 305 | /* fix branch prediction bit to predict branch not taken */ |
| 306 | #define IMAGE_REL_PPC_BRNTAKEN 0x0400 |
| 307 | |
| 308 | /* toc slot defined in file (or, data in toc) */ |
| 309 | #define IMAGE_REL_PPC_TOCDEFN 0x0800 |
| 310 | |
| 311 | /* masks to isolate above values in IMAGE_RELOCATION.Type */ |
| 312 | #define IMAGE_REL_PPC_TYPEMASK 0x00FF |
| 313 | #define IMAGE_REL_PPC_FLAGMASK 0x0F00 |
| 314 | |
| 315 | #define EXTRACT_TYPE(x) ((x) & IMAGE_REL_PPC_TYPEMASK) |
| 316 | #define EXTRACT_FLAGS(x) ((x) & IMAGE_REL_PPC_FLAGMASK) |
| 317 | #define EXTRACT_JUNK(x) \ |
| 318 | ((x) & ~(IMAGE_REL_PPC_TYPEMASK | IMAGE_REL_PPC_FLAGMASK)) |
| 319 | \f |
| 320 | /* static helper functions to make relocation work */ |
| 321 | /* (Work In Progress) */ |
| 322 | |
| 323 | static bfd_reloc_status_type ppc_refhi_reloc PARAMS ((bfd *abfd, |
| 324 | arelent *reloc, |
| 325 | asymbol *symbol, |
| 326 | PTR data, |
| 327 | asection *section, |
| 328 | bfd *output_bfd, |
| 329 | char **error)); |
| 330 | #if 0 |
| 331 | static bfd_reloc_status_type ppc_reflo_reloc PARAMS ((bfd *abfd, |
| 332 | arelent *reloc, |
| 333 | asymbol *symbol, |
| 334 | PTR data, |
| 335 | asection *section, |
| 336 | bfd *output_bfd, |
| 337 | char **error)); |
| 338 | #endif |
| 339 | static bfd_reloc_status_type ppc_pair_reloc PARAMS ((bfd *abfd, |
| 340 | arelent *reloc, |
| 341 | asymbol *symbol, |
| 342 | PTR data, |
| 343 | asection *section, |
| 344 | bfd *output_bfd, |
| 345 | char **error)); |
| 346 | \f |
| 347 | static bfd_reloc_status_type ppc_toc16_reloc PARAMS ((bfd *abfd, |
| 348 | arelent *reloc, |
| 349 | asymbol *symbol, |
| 350 | PTR data, |
| 351 | asection *section, |
| 352 | bfd *output_bfd, |
| 353 | char **error)); |
| 354 | |
| 355 | #if 0 |
| 356 | static bfd_reloc_status_type ppc_addr32nb_reloc PARAMS ((bfd *abfd, |
| 357 | arelent *reloc, |
| 358 | asymbol *symbol, |
| 359 | PTR data, |
| 360 | asection *section, |
| 361 | bfd *output_bfd, |
| 362 | char **error)); |
| 363 | #endif |
| 364 | static bfd_reloc_status_type ppc_section_reloc PARAMS ((bfd *abfd, |
| 365 | arelent *reloc, |
| 366 | asymbol *symbol, |
| 367 | PTR data, |
| 368 | asection *section, |
| 369 | bfd *output_bfd, |
| 370 | char **error)); |
| 371 | |
| 372 | static bfd_reloc_status_type ppc_secrel_reloc PARAMS ((bfd *abfd, |
| 373 | arelent *reloc, |
| 374 | asymbol *symbol, |
| 375 | PTR data, |
| 376 | asection *section, |
| 377 | bfd *output_bfd, |
| 378 | char **error)); |
| 379 | |
| 380 | static bfd_reloc_status_type ppc_imglue_reloc PARAMS ((bfd *abfd, |
| 381 | arelent *reloc, |
| 382 | asymbol *symbol, |
| 383 | PTR data, |
| 384 | asection *section, |
| 385 | bfd *output_bfd, |
| 386 | char **error)); |
| 387 | |
| 388 | static boolean in_reloc_p PARAMS((bfd *abfd, reloc_howto_type *howto)); |
| 389 | \f |
| 390 | /* FIXME: It'll take a while to get through all of these. I only need a few to |
| 391 | get us started, so those I'll make sure work. Those marked FIXME are either |
| 392 | completely unverified or have a specific unknown marked in the comment */ |
| 393 | |
| 394 | /*---------------------------------------------------------------------------*/ |
| 395 | /* */ |
| 396 | /* Relocation entries for Windows/NT on PowerPC. */ |
| 397 | /* */ |
| 398 | /* From the document "" we find the following listed as used relocs: */ |
| 399 | /* */ |
| 400 | /* ABSOLUTE : The noop */ |
| 401 | /* ADDR[64|32|16] : fields that hold addresses in data fields or the */ |
| 402 | /* 16 bit displacement field on a load/store. */ |
| 403 | /* ADDR[24|14] : fields that hold addresses in branch and cond */ |
| 404 | /* branches. These represent [26|16] bit addresses. */ |
| 405 | /* The low order 2 bits are preserved. */ |
| 406 | /* REL[24|14] : branches relative to the Instruction Address */ |
| 407 | /* register. These represent [26|16] bit addresses, */ |
| 408 | /* as before. The instruction field will be zero, and */ |
| 409 | /* the address of the SYM will be inserted at link time. */ |
| 410 | /* TOCREL16 : 16 bit displacement field referring to a slot in */ |
| 411 | /* toc. */ |
| 412 | /* TOCREL14 : 16 bit displacement field, similar to REL14 or ADDR14. */ |
| 413 | /* ADDR32NB : 32 bit address relative to the virtual origin. */ |
| 414 | /* (On the alpha, this is always a linker generated thunk)*/ |
| 415 | /* (i.e. 32bit addr relative to the image base) */ |
| 416 | /* SECREL : The value is relative to the start of the section */ |
| 417 | /* containing the symbol. */ |
| 418 | /* SECTION : access to the header containing the item. Supports the */ |
| 419 | /* codeview debugger. */ |
| 420 | /* */ |
| 421 | /* In particular, note that the document does not indicate that the */ |
| 422 | /* relocations listed in the header file are used. */ |
| 423 | /* */ |
| 424 | /* */ |
| 425 | /* */ |
| 426 | /*---------------------------------------------------------------------------*/ |
| 427 | |
| 428 | static reloc_howto_type ppc_coff_howto_table[] = |
| 429 | { |
| 430 | /* IMAGE_REL_PPC_ABSOLUTE 0x0000 NOP */ |
| 431 | /* Unused: */ |
| 432 | HOWTO (IMAGE_REL_PPC_ABSOLUTE, /* type */ |
| 433 | 0, /* rightshift */ |
| 434 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 435 | 0, /* bitsize */ |
| 436 | false, /* pc_relative */ |
| 437 | 0, /* bitpos */ |
| 438 | complain_overflow_dont, /* dont complain_on_overflow */ |
| 439 | 0, /* special_function */ |
| 440 | "ABSOLUTE", /* name */ |
| 441 | false, /* partial_inplace */ |
| 442 | 0x00, /* src_mask */ |
| 443 | 0x00, /* dst_mask */ |
| 444 | false), /* pcrel_offset */ |
| 445 | |
| 446 | /* IMAGE_REL_PPC_ADDR64 0x0001 64-bit address */ |
| 447 | /* Unused: */ |
| 448 | HOWTO(IMAGE_REL_PPC_ADDR64, /* type */ |
| 449 | 0, /* rightshift */ |
| 450 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
| 451 | 64, /* bitsize */ |
| 452 | false, /* pc_relative */ |
| 453 | 0, /* bitpos */ |
| 454 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 455 | 0, /* special_function */ |
| 456 | "ADDR64", /* name */ |
| 457 | true, /* partial_inplace */ |
| 458 | MINUS_ONE, /* src_mask */ |
| 459 | MINUS_ONE, /* dst_mask */ |
| 460 | false), /* pcrel_offset */ |
| 461 | |
| 462 | /* IMAGE_REL_PPC_ADDR32 0x0002 32-bit address */ |
| 463 | /* Used: */ |
| 464 | HOWTO (IMAGE_REL_PPC_ADDR32, /* type */ |
| 465 | 0, /* rightshift */ |
| 466 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 467 | 32, /* bitsize */ |
| 468 | false, /* pc_relative */ |
| 469 | 0, /* bitpos */ |
| 470 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 471 | 0, /* special_function */ |
| 472 | "ADDR32", /* name */ |
| 473 | true, /* partial_inplace */ |
| 474 | 0xffffffff, /* src_mask */ |
| 475 | 0xffffffff, /* dst_mask */ |
| 476 | false), /* pcrel_offset */ |
| 477 | |
| 478 | /* IMAGE_REL_PPC_ADDR24 0x0003 26-bit address, shifted left 2 (branch absolute) */ |
| 479 | /* the LI field is in bit 6 through bit 29 is 24 bits, + 2 for the shift */ |
| 480 | /* Of course, That's the IBM approved bit numbering, which is not what */ |
| 481 | /* anyone else uses.... The li field is in bit 2 thru 25 */ |
| 482 | /* Used: */ |
| 483 | HOWTO (IMAGE_REL_PPC_ADDR24, /* type */ |
| 484 | 0, /* rightshift */ |
| 485 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 486 | 26, /* bitsize */ |
| 487 | false, /* pc_relative */ |
| 488 | 0, /* bitpos */ |
| 489 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 490 | 0, /* special_function */ |
| 491 | "ADDR24", /* name */ |
| 492 | true, /* partial_inplace */ |
| 493 | 0x07fffffc, /* src_mask */ |
| 494 | 0x07fffffc, /* dst_mask */ |
| 495 | false), /* pcrel_offset */ |
| 496 | |
| 497 | /* IMAGE_REL_PPC_ADDR16 0x0004 16-bit address */ |
| 498 | /* Used: */ |
| 499 | HOWTO (IMAGE_REL_PPC_ADDR16, /* type */ |
| 500 | 0, /* rightshift */ |
| 501 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 502 | 16, /* bitsize */ |
| 503 | false, /* pc_relative */ |
| 504 | 0, /* bitpos */ |
| 505 | complain_overflow_signed, /* complain_on_overflow */ |
| 506 | 0, /* special_function */ |
| 507 | "ADDR16", /* name */ |
| 508 | true, /* partial_inplace */ |
| 509 | 0xffff, /* src_mask */ |
| 510 | 0xffff, /* dst_mask */ |
| 511 | false), /* pcrel_offset */ |
| 512 | |
| 513 | /* IMAGE_REL_PPC_ADDR14 0x0005 */ |
| 514 | /* 16-bit address, shifted left 2 (load doubleword) */ |
| 515 | /* FIXME: the mask is likely wrong, and the bit position may be as well */ |
| 516 | /* Unused: */ |
| 517 | HOWTO (IMAGE_REL_PPC_ADDR14, /* type */ |
| 518 | 1, /* rightshift */ |
| 519 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 520 | 16, /* bitsize */ |
| 521 | false, /* pc_relative */ |
| 522 | 0, /* bitpos */ |
| 523 | complain_overflow_signed, /* complain_on_overflow */ |
| 524 | 0, /* special_function */ |
| 525 | "ADDR16", /* name */ |
| 526 | true, /* partial_inplace */ |
| 527 | 0xffff, /* src_mask */ |
| 528 | 0xffff, /* dst_mask */ |
| 529 | false), /* pcrel_offset */ |
| 530 | |
| 531 | /* IMAGE_REL_PPC_REL24 0x0006 */ |
| 532 | /* 26-bit PC-relative offset, shifted left 2 (branch relative) */ |
| 533 | /* Used: */ |
| 534 | HOWTO (IMAGE_REL_PPC_REL24, /* type */ |
| 535 | 0, /* rightshift */ |
| 536 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 537 | 26, /* bitsize */ |
| 538 | true, /* pc_relative */ |
| 539 | 0, /* bitpos */ |
| 540 | complain_overflow_signed, /* complain_on_overflow */ |
| 541 | 0, /* special_function */ |
| 542 | "REL24", /* name */ |
| 543 | true, /* partial_inplace */ |
| 544 | 0x3fffffc, /* src_mask */ |
| 545 | 0x3fffffc, /* dst_mask */ |
| 546 | false), /* pcrel_offset */ |
| 547 | |
| 548 | /* IMAGE_REL_PPC_REL14 0x0007 */ |
| 549 | /* 16-bit PC-relative offset, shifted left 2 (br cond relative) */ |
| 550 | /* FIXME: the mask is likely wrong, and the bit position may be as well */ |
| 551 | /* FIXME: how does it know how far to shift? */ |
| 552 | /* Unused: */ |
| 553 | HOWTO (IMAGE_REL_PPC_ADDR14, /* type */ |
| 554 | 1, /* rightshift */ |
| 555 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 556 | 16, /* bitsize */ |
| 557 | false, /* pc_relative */ |
| 558 | 0, /* bitpos */ |
| 559 | complain_overflow_signed, /* complain_on_overflow */ |
| 560 | 0, /* special_function */ |
| 561 | "ADDR16", /* name */ |
| 562 | true, /* partial_inplace */ |
| 563 | 0xffff, /* src_mask */ |
| 564 | 0xffff, /* dst_mask */ |
| 565 | true), /* pcrel_offset */ |
| 566 | |
| 567 | /* IMAGE_REL_PPC_TOCREL16 0x0008 */ |
| 568 | /* 16-bit offset from TOC base */ |
| 569 | /* Used: */ |
| 570 | HOWTO (IMAGE_REL_PPC_TOCREL16,/* type */ |
| 571 | 0, /* rightshift */ |
| 572 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 573 | 16, /* bitsize */ |
| 574 | false, /* pc_relative */ |
| 575 | 0, /* bitpos */ |
| 576 | complain_overflow_dont, /* complain_on_overflow */ |
| 577 | ppc_toc16_reloc, /* special_function */ |
| 578 | "TOCREL16", /* name */ |
| 579 | false, /* partial_inplace */ |
| 580 | 0xffff, /* src_mask */ |
| 581 | 0xffff, /* dst_mask */ |
| 582 | false), /* pcrel_offset */ |
| 583 | |
| 584 | /* IMAGE_REL_PPC_TOCREL14 0x0009 */ |
| 585 | /* 16-bit offset from TOC base, shifted left 2 (load doubleword) */ |
| 586 | /* Unused: */ |
| 587 | HOWTO (IMAGE_REL_PPC_TOCREL14,/* type */ |
| 588 | 1, /* rightshift */ |
| 589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 590 | 16, /* bitsize */ |
| 591 | false, /* pc_relative */ |
| 592 | 0, /* bitpos */ |
| 593 | complain_overflow_signed, /* complain_on_overflow */ |
| 594 | 0, /* special_function */ |
| 595 | "TOCREL14", /* name */ |
| 596 | false, /* partial_inplace */ |
| 597 | 0xffff, /* src_mask */ |
| 598 | 0xffff, /* dst_mask */ |
| 599 | false), /* pcrel_offset */ |
| 600 | |
| 601 | /* IMAGE_REL_PPC_ADDR32NB 0x000A */ |
| 602 | /* 32-bit addr w/ image base */ |
| 603 | /* Unused: */ |
| 604 | HOWTO (IMAGE_REL_PPC_ADDR32NB,/* type */ |
| 605 | 0, /* rightshift */ |
| 606 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 607 | 32, /* bitsize */ |
| 608 | false, /* pc_relative */ |
| 609 | 0, /* bitpos */ |
| 610 | complain_overflow_signed, /* complain_on_overflow */ |
| 611 | 0, /* special_function */ |
| 612 | "ADDR32NB", /* name */ |
| 613 | true, /* partial_inplace */ |
| 614 | 0xffffffff, /* src_mask */ |
| 615 | 0xffffffff, /* dst_mask */ |
| 616 | false), /* pcrel_offset */ |
| 617 | |
| 618 | /* IMAGE_REL_PPC_SECREL 0x000B */ |
| 619 | /* va of containing section (as in an image sectionhdr) */ |
| 620 | /* Unused: */ |
| 621 | HOWTO (IMAGE_REL_PPC_SECREL,/* type */ |
| 622 | 0, /* rightshift */ |
| 623 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 624 | 32, /* bitsize */ |
| 625 | false, /* pc_relative */ |
| 626 | 0, /* bitpos */ |
| 627 | complain_overflow_signed, /* complain_on_overflow */ |
| 628 | ppc_secrel_reloc, /* special_function */ |
| 629 | "SECREL", /* name */ |
| 630 | true, /* partial_inplace */ |
| 631 | 0xffffffff, /* src_mask */ |
| 632 | 0xffffffff, /* dst_mask */ |
| 633 | true), /* pcrel_offset */ |
| 634 | |
| 635 | /* IMAGE_REL_PPC_SECTION 0x000C */ |
| 636 | /* sectionheader number */ |
| 637 | /* Unused: */ |
| 638 | HOWTO (IMAGE_REL_PPC_SECTION,/* type */ |
| 639 | 0, /* rightshift */ |
| 640 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 641 | 32, /* bitsize */ |
| 642 | false, /* pc_relative */ |
| 643 | 0, /* bitpos */ |
| 644 | complain_overflow_signed, /* complain_on_overflow */ |
| 645 | ppc_section_reloc, /* special_function */ |
| 646 | "SECTION", /* name */ |
| 647 | true, /* partial_inplace */ |
| 648 | 0xffffffff, /* src_mask */ |
| 649 | 0xffffffff, /* dst_mask */ |
| 650 | true), /* pcrel_offset */ |
| 651 | |
| 652 | /* IMAGE_REL_PPC_IFGLUE 0x000D */ |
| 653 | /* substitute TOC restore instruction iff symbol is glue code */ |
| 654 | /* Used: */ |
| 655 | HOWTO (IMAGE_REL_PPC_IFGLUE,/* type */ |
| 656 | 0, /* rightshift */ |
| 657 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 658 | 32, /* bitsize */ |
| 659 | false, /* pc_relative */ |
| 660 | 0, /* bitpos */ |
| 661 | complain_overflow_signed, /* complain_on_overflow */ |
| 662 | 0, /* special_function */ |
| 663 | "IFGLUE", /* name */ |
| 664 | true, /* partial_inplace */ |
| 665 | 0xffffffff, /* src_mask */ |
| 666 | 0xffffffff, /* dst_mask */ |
| 667 | false), /* pcrel_offset */ |
| 668 | |
| 669 | /* IMAGE_REL_PPC_IMGLUE 0x000E */ |
| 670 | /* symbol is glue code; virtual address is TOC restore instruction */ |
| 671 | /* Unused: */ |
| 672 | HOWTO (IMAGE_REL_PPC_IMGLUE,/* type */ |
| 673 | 0, /* rightshift */ |
| 674 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 675 | 32, /* bitsize */ |
| 676 | false, /* pc_relative */ |
| 677 | 0, /* bitpos */ |
| 678 | complain_overflow_dont, /* complain_on_overflow */ |
| 679 | ppc_imglue_reloc, /* special_function */ |
| 680 | "IMGLUE", /* name */ |
| 681 | false, /* partial_inplace */ |
| 682 | 0xffffffff, /* src_mask */ |
| 683 | 0xffffffff, /* dst_mask */ |
| 684 | false), /* pcrel_offset */ |
| 685 | |
| 686 | /* IMAGE_REL_PPC_SECREL16 0x000F */ |
| 687 | /* va of containing section (limited to 16 bits) */ |
| 688 | /* Unused: */ |
| 689 | HOWTO (IMAGE_REL_PPC_SECREL16,/* type */ |
| 690 | 0, /* rightshift */ |
| 691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 692 | 16, /* bitsize */ |
| 693 | false, /* pc_relative */ |
| 694 | 0, /* bitpos */ |
| 695 | complain_overflow_signed, /* complain_on_overflow */ |
| 696 | 0, /* special_function */ |
| 697 | "SECREL16", /* name */ |
| 698 | true, /* partial_inplace */ |
| 699 | 0xffff, /* src_mask */ |
| 700 | 0xffff, /* dst_mask */ |
| 701 | true), /* pcrel_offset */ |
| 702 | |
| 703 | /* IMAGE_REL_PPC_REFHI 0x0010 */ |
| 704 | /* Unused: */ |
| 705 | HOWTO (IMAGE_REL_PPC_REFHI, /* type */ |
| 706 | 0, /* rightshift */ |
| 707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 708 | 16, /* bitsize */ |
| 709 | false, /* pc_relative */ |
| 710 | 0, /* bitpos */ |
| 711 | complain_overflow_signed, /* complain_on_overflow */ |
| 712 | ppc_refhi_reloc, /* special_function */ |
| 713 | "REFHI", /* name */ |
| 714 | true, /* partial_inplace */ |
| 715 | 0xffffffff, /* src_mask */ |
| 716 | 0xffffffff, /* dst_mask */ |
| 717 | false), /* pcrel_offset */ |
| 718 | |
| 719 | /* IMAGE_REL_PPC_REFLO 0x0011 */ |
| 720 | /* Unused: */ |
| 721 | HOWTO (IMAGE_REL_PPC_REFLO, /* type */ |
| 722 | 0, /* rightshift */ |
| 723 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 724 | 16, /* bitsize */ |
| 725 | false, /* pc_relative */ |
| 726 | 0, /* bitpos */ |
| 727 | complain_overflow_signed, /* complain_on_overflow */ |
| 728 | ppc_refhi_reloc, /* special_function */ |
| 729 | "REFLO", /* name */ |
| 730 | true, /* partial_inplace */ |
| 731 | 0xffffffff, /* src_mask */ |
| 732 | 0xffffffff, /* dst_mask */ |
| 733 | false), /* pcrel_offset */ |
| 734 | |
| 735 | /* IMAGE_REL_PPC_PAIR 0x0012 */ |
| 736 | /* Unused: */ |
| 737 | HOWTO (IMAGE_REL_PPC_PAIR, /* type */ |
| 738 | 0, /* rightshift */ |
| 739 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 740 | 16, /* bitsize */ |
| 741 | false, /* pc_relative */ |
| 742 | 0, /* bitpos */ |
| 743 | complain_overflow_signed, /* complain_on_overflow */ |
| 744 | ppc_pair_reloc, /* special_function */ |
| 745 | "PAIR", /* name */ |
| 746 | true, /* partial_inplace */ |
| 747 | 0xffffffff, /* src_mask */ |
| 748 | 0xffffffff, /* dst_mask */ |
| 749 | false), /* pcrel_offset */ |
| 750 | |
| 751 | /* IMAGE_REL_PPC_TOCREL16_DEFN 0x0013 */ |
| 752 | /* 16-bit offset from TOC base, without causing a definition */ |
| 753 | /* Used: */ |
| 754 | HOWTO ( (IMAGE_REL_PPC_TOCREL16 | IMAGE_REL_PPC_TOCDEFN), /* type */ |
| 755 | 0, /* rightshift */ |
| 756 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 757 | 16, /* bitsize */ |
| 758 | false, /* pc_relative */ |
| 759 | 0, /* bitpos */ |
| 760 | complain_overflow_dont, /* complain_on_overflow */ |
| 761 | 0, /* special_function */ |
| 762 | "TOCREL16, TOCDEFN", /* name */ |
| 763 | false, /* partial_inplace */ |
| 764 | 0xffff, /* src_mask */ |
| 765 | 0xffff, /* dst_mask */ |
| 766 | false), /* pcrel_offset */ |
| 767 | |
| 768 | }; |
| 769 | \f |
| 770 | /* Some really cheezy macros that can be turned on to test stderr :-) */ |
| 771 | |
| 772 | #ifdef DEBUG_RELOC |
| 773 | #define UN_IMPL(x) \ |
| 774 | { \ |
| 775 | static int i; \ |
| 776 | if (i == 0) \ |
| 777 | { \ |
| 778 | i = 1; \ |
| 779 | fprintf (stderr,_("Unimplemented Relocation -- %s\n"),x); \ |
| 780 | } \ |
| 781 | } |
| 782 | |
| 783 | #define DUMP_RELOC(n,r) \ |
| 784 | { \ |
| 785 | fprintf (stderr,"%s sym %d, addr %d, addend %d\n", \ |
| 786 | n, (*(r->sym_ptr_ptr))->name, \ |
| 787 | r->address, r->addend); \ |
| 788 | } |
| 789 | |
| 790 | /* Given a reloc name, n, and a pointer to an internal_reloc, |
| 791 | dump out interesting information on the contents |
| 792 | |
| 793 | #define n_name _n._n_name |
| 794 | #define n_zeroes _n._n_n._n_zeroes |
| 795 | #define n_offset _n._n_n._n_offset |
| 796 | |
| 797 | */ |
| 798 | |
| 799 | #define DUMP_RELOC2(n,r) \ |
| 800 | { \ |
| 801 | fprintf (stderr,"%s sym %d, r_vaddr %d %s\n", \ |
| 802 | n, r->r_symndx, r->r_vaddr,\ |
| 803 | (((r->r_type) & IMAGE_REL_PPC_TOCDEFN) == 0) \ |
| 804 | ?" ":" TOCDEFN" ); \ |
| 805 | } |
| 806 | |
| 807 | #else |
| 808 | #define UN_IMPL(x) |
| 809 | #define DUMP_RELOC(n,r) |
| 810 | #define DUMP_RELOC2(n,r) |
| 811 | #endif |
| 812 | \f |
| 813 | /* toc construction and management routines */ |
| 814 | |
| 815 | /* This file is compiled twice, and these variables are defined in one |
| 816 | of the compilations. FIXME: This is confusing and weird. Also, |
| 817 | BFD should not use global variables. */ |
| 818 | extern bfd* bfd_of_toc_owner; |
| 819 | extern long int global_toc_size; |
| 820 | |
| 821 | extern long int import_table_size; |
| 822 | extern long int first_thunk_address; |
| 823 | extern long int thunk_size; |
| 824 | |
| 825 | enum toc_type |
| 826 | { |
| 827 | default_toc, |
| 828 | toc_32, |
| 829 | toc_64 |
| 830 | }; |
| 831 | |
| 832 | enum ref_category |
| 833 | { |
| 834 | priv, |
| 835 | pub, |
| 836 | data |
| 837 | }; |
| 838 | |
| 839 | struct list_ele |
| 840 | { |
| 841 | struct list_ele *next; |
| 842 | bfd_vma addr; |
| 843 | enum ref_category cat; |
| 844 | int offset; |
| 845 | const char *name; |
| 846 | }; |
| 847 | |
| 848 | extern struct list_ele *head; |
| 849 | extern struct list_ele *tail; |
| 850 | |
| 851 | static void record_toc |
| 852 | PARAMS ((asection *, int, enum ref_category, const char *)); |
| 853 | |
| 854 | static void |
| 855 | record_toc (toc_section, our_toc_offset, cat, name) |
| 856 | asection *toc_section; |
| 857 | int our_toc_offset; |
| 858 | enum ref_category cat; |
| 859 | const char *name; |
| 860 | { |
| 861 | /* add this entry to our toc addr-offset-name list */ |
| 862 | struct list_ele *t; |
| 863 | t = (struct list_ele *) bfd_malloc (sizeof (struct list_ele)); |
| 864 | if (t == NULL) |
| 865 | abort (); |
| 866 | t->next = 0; |
| 867 | t->offset = our_toc_offset; |
| 868 | t->name = name; |
| 869 | t->cat = cat; |
| 870 | t->addr = toc_section->output_offset + our_toc_offset; |
| 871 | |
| 872 | if (head == 0) |
| 873 | { |
| 874 | head = t; |
| 875 | tail = t; |
| 876 | } |
| 877 | else |
| 878 | { |
| 879 | tail->next = t; |
| 880 | tail = t; |
| 881 | } |
| 882 | } |
| 883 | |
| 884 | #ifdef COFF_IMAGE_WITH_PE |
| 885 | |
| 886 | static boolean ppc_record_toc_entry |
| 887 | PARAMS ((bfd *, struct bfd_link_info *, asection *, int, enum toc_type)); |
| 888 | static void ppc_mark_symbol_as_glue |
| 889 | PARAMS ((bfd *, int, struct internal_reloc *)); |
| 890 | |
| 891 | /* record a toc offset against a symbol */ |
| 892 | static boolean |
| 893 | ppc_record_toc_entry(abfd, info, sec, sym, toc_kind) |
| 894 | bfd *abfd; |
| 895 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 896 | asection *sec ATTRIBUTE_UNUSED; |
| 897 | int sym; |
| 898 | enum toc_type toc_kind ATTRIBUTE_UNUSED; |
| 899 | { |
| 900 | struct ppc_coff_link_hash_entry *h; |
| 901 | const char *name; |
| 902 | |
| 903 | int *local_syms; |
| 904 | |
| 905 | h = 0; |
| 906 | |
| 907 | h = (struct ppc_coff_link_hash_entry *) (obj_coff_sym_hashes (abfd)[sym]); |
| 908 | if (h != 0) |
| 909 | { |
| 910 | HASH_CHECK(h); |
| 911 | } |
| 912 | |
| 913 | if (h == 0) |
| 914 | { |
| 915 | local_syms = obj_coff_local_toc_table(abfd); |
| 916 | if (local_syms == 0) |
| 917 | { |
| 918 | unsigned int i; |
| 919 | /* allocate a table */ |
| 920 | local_syms = |
| 921 | (int *) bfd_zalloc (abfd, |
| 922 | obj_raw_syment_count(abfd) * sizeof (int)); |
| 923 | if (local_syms == 0) |
| 924 | return false; |
| 925 | obj_coff_local_toc_table(abfd) = local_syms; |
| 926 | for (i = 0; i < obj_raw_syment_count(abfd); ++i) |
| 927 | { |
| 928 | SET_UNALLOCATED(local_syms[i]); |
| 929 | } |
| 930 | } |
| 931 | |
| 932 | if (IS_UNALLOCATED(local_syms[sym])) |
| 933 | { |
| 934 | local_syms[sym] = global_toc_size; |
| 935 | global_toc_size += 4; |
| 936 | |
| 937 | /* The size must fit in a 16bit displacment */ |
| 938 | if (global_toc_size > 65535) |
| 939 | { |
| 940 | (*_bfd_error_handler) (_("TOC overflow")); |
| 941 | bfd_set_error (bfd_error_file_too_big); |
| 942 | return false; |
| 943 | } |
| 944 | } |
| 945 | } |
| 946 | else |
| 947 | { |
| 948 | name = h->root.root.root.string; |
| 949 | |
| 950 | /* check to see if there's a toc slot allocated. If not, do it |
| 951 | here. It will be used in relocate_section */ |
| 952 | if (IS_UNALLOCATED(h->toc_offset)) |
| 953 | { |
| 954 | h->toc_offset = global_toc_size; |
| 955 | global_toc_size += 4; |
| 956 | |
| 957 | /* The size must fit in a 16bit displacment */ |
| 958 | if (global_toc_size >= 65535) |
| 959 | { |
| 960 | (*_bfd_error_handler) (_("TOC overflow")); |
| 961 | bfd_set_error (bfd_error_file_too_big); |
| 962 | return false; |
| 963 | } |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | return true; |
| 968 | } |
| 969 | |
| 970 | /* record a toc offset against a symbol */ |
| 971 | static void |
| 972 | ppc_mark_symbol_as_glue(abfd, sym, rel) |
| 973 | bfd *abfd; |
| 974 | int sym; |
| 975 | struct internal_reloc *rel; |
| 976 | { |
| 977 | struct ppc_coff_link_hash_entry *h; |
| 978 | |
| 979 | h = (struct ppc_coff_link_hash_entry *) (obj_coff_sym_hashes (abfd)[sym]); |
| 980 | |
| 981 | HASH_CHECK(h); |
| 982 | |
| 983 | h->symbol_is_glue = 1; |
| 984 | h->glue_insn = bfd_get_32 (abfd, (bfd_byte *) &rel->r_vaddr); |
| 985 | |
| 986 | return; |
| 987 | } |
| 988 | |
| 989 | #endif /* COFF_IMAGE_WITH_PE */ |
| 990 | \f |
| 991 | /* Return true if this relocation should |
| 992 | appear in the output .reloc section. */ |
| 993 | |
| 994 | static boolean in_reloc_p(abfd, howto) |
| 995 | bfd * abfd ATTRIBUTE_UNUSED; |
| 996 | reloc_howto_type *howto; |
| 997 | { |
| 998 | return |
| 999 | (! howto->pc_relative) |
| 1000 | && (howto->type != IMAGE_REL_PPC_ADDR32NB) |
| 1001 | && (howto->type != IMAGE_REL_PPC_TOCREL16) |
| 1002 | && (howto->type != IMAGE_REL_PPC_IMGLUE) |
| 1003 | && (howto->type != IMAGE_REL_PPC_IFGLUE) |
| 1004 | && (howto->type != IMAGE_REL_PPC_SECREL) |
| 1005 | && (howto->type != IMAGE_REL_PPC_SECTION) |
| 1006 | && (howto->type != IMAGE_REL_PPC_SECREL16) |
| 1007 | && (howto->type != IMAGE_REL_PPC_REFHI) |
| 1008 | && (howto->type != IMAGE_REL_PPC_REFLO) |
| 1009 | && (howto->type != IMAGE_REL_PPC_PAIR) |
| 1010 | && (howto->type != IMAGE_REL_PPC_TOCREL16_DEFN) ; |
| 1011 | } |
| 1012 | |
| 1013 | #if 0 |
| 1014 | |
| 1015 | /* this function is in charge of performing all the ppc PE relocations */ |
| 1016 | /* Don't yet know if we want to do this this particular way ... (krk) */ |
| 1017 | /* FIXME: (it is not yet enabled) */ |
| 1018 | |
| 1019 | static bfd_reloc_status_type |
| 1020 | pe_ppc_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, |
| 1021 | error_message) |
| 1022 | bfd *abfd; |
| 1023 | arelent *reloc_entry; |
| 1024 | asymbol *symbol_in; |
| 1025 | PTR data; |
| 1026 | asection *input_section; |
| 1027 | bfd *output_bfd; |
| 1028 | char **error_message; |
| 1029 | { |
| 1030 | /* the consth relocation comes in two parts, we have to remember |
| 1031 | the state between calls, in these variables */ |
| 1032 | static boolean part1_consth_active = false; |
| 1033 | static unsigned long part1_consth_value; |
| 1034 | |
| 1035 | unsigned long sym_value; |
| 1036 | unsigned short r_type; |
| 1037 | unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/ |
| 1038 | |
| 1039 | r_type = reloc_entry->howto->type; |
| 1040 | |
| 1041 | if (output_bfd) |
| 1042 | { |
| 1043 | /* Partial linking - do nothing */ |
| 1044 | reloc_entry->address += input_section->output_offset; |
| 1045 | return bfd_reloc_ok; |
| 1046 | } |
| 1047 | |
| 1048 | if (symbol_in != NULL |
| 1049 | && bfd_is_und_section (symbol_in->section)) |
| 1050 | { |
| 1051 | /* Keep the state machine happy in case we're called again */ |
| 1052 | if (r_type == IMAGE_REL_PPC_REFHI) |
| 1053 | { |
| 1054 | part1_consth_active = true; |
| 1055 | part1_consth_value = 0; |
| 1056 | } |
| 1057 | return(bfd_reloc_undefined); |
| 1058 | } |
| 1059 | |
| 1060 | if ((part1_consth_active) && (r_type != IMAGE_REL_PPC_PAIR)) |
| 1061 | { |
| 1062 | part1_consth_active = false; |
| 1063 | *error_message = (char *) _("Missing PAIR"); |
| 1064 | return(bfd_reloc_dangerous); |
| 1065 | } |
| 1066 | |
| 1067 | sym_value = get_symbol_value(symbol_in); |
| 1068 | |
| 1069 | return(bfd_reloc_ok); |
| 1070 | } |
| 1071 | |
| 1072 | #endif /* 0 */ |
| 1073 | |
| 1074 | /* The reloc processing routine for the optimized COFF linker. */ |
| 1075 | |
| 1076 | static boolean |
| 1077 | coff_ppc_relocate_section (output_bfd, info, input_bfd, input_section, |
| 1078 | contents, relocs, syms, sections) |
| 1079 | bfd *output_bfd; |
| 1080 | struct bfd_link_info *info; |
| 1081 | bfd *input_bfd; |
| 1082 | asection *input_section; |
| 1083 | bfd_byte *contents; |
| 1084 | struct internal_reloc *relocs; |
| 1085 | struct internal_syment *syms; |
| 1086 | asection **sections; |
| 1087 | { |
| 1088 | struct internal_reloc *rel; |
| 1089 | struct internal_reloc *relend; |
| 1090 | boolean hihalf; |
| 1091 | bfd_vma hihalf_val; |
| 1092 | asection *toc_section = 0; |
| 1093 | bfd_vma relocation; |
| 1094 | reloc_howto_type *howto = 0; |
| 1095 | |
| 1096 | /* If we are performing a relocateable link, we don't need to do a |
| 1097 | thing. The caller will take care of adjusting the reloc |
| 1098 | addresses and symbol indices. */ |
| 1099 | if (info->relocateable) |
| 1100 | return true; |
| 1101 | |
| 1102 | hihalf = false; |
| 1103 | hihalf_val = 0; |
| 1104 | |
| 1105 | rel = relocs; |
| 1106 | relend = rel + input_section->reloc_count; |
| 1107 | for (; rel < relend; rel++) |
| 1108 | { |
| 1109 | long symndx; |
| 1110 | struct ppc_coff_link_hash_entry *h; |
| 1111 | struct internal_syment *sym; |
| 1112 | bfd_vma val; |
| 1113 | |
| 1114 | asection *sec; |
| 1115 | bfd_reloc_status_type rstat; |
| 1116 | bfd_byte *loc; |
| 1117 | |
| 1118 | unsigned short r_type = EXTRACT_TYPE (rel->r_type); |
| 1119 | unsigned short r_flags = EXTRACT_FLAGS(rel->r_type); |
| 1120 | |
| 1121 | symndx = rel->r_symndx; |
| 1122 | loc = contents + rel->r_vaddr - input_section->vma; |
| 1123 | |
| 1124 | /* FIXME: check bounds on r_type */ |
| 1125 | howto = ppc_coff_howto_table + r_type; |
| 1126 | |
| 1127 | if (symndx == -1) |
| 1128 | { |
| 1129 | h = NULL; |
| 1130 | sym = NULL; |
| 1131 | } |
| 1132 | else |
| 1133 | { |
| 1134 | h = (struct ppc_coff_link_hash_entry *) |
| 1135 | (obj_coff_sym_hashes (input_bfd)[symndx]); |
| 1136 | if (h != 0) |
| 1137 | { |
| 1138 | HASH_CHECK(h); |
| 1139 | } |
| 1140 | |
| 1141 | sym = syms + symndx; |
| 1142 | } |
| 1143 | |
| 1144 | if (r_type == IMAGE_REL_PPC_IMGLUE && h == 0) |
| 1145 | { |
| 1146 | /* An IMGLUE reloc must have a name. Something is very wrong. */ |
| 1147 | abort (); |
| 1148 | } |
| 1149 | |
| 1150 | sec = NULL; |
| 1151 | val = 0; |
| 1152 | |
| 1153 | /* FIXME: PAIR unsupported in the following code */ |
| 1154 | if (h == NULL) |
| 1155 | { |
| 1156 | if (symndx == -1) |
| 1157 | sec = bfd_abs_section_ptr; |
| 1158 | else |
| 1159 | { |
| 1160 | sec = sections[symndx]; |
| 1161 | val = (sec->output_section->vma |
| 1162 | + sec->output_offset |
| 1163 | + sym->n_value); |
| 1164 | if (! obj_pe (output_bfd)) |
| 1165 | val -= sec->vma; |
| 1166 | } |
| 1167 | } |
| 1168 | else |
| 1169 | { |
| 1170 | HASH_CHECK(h); |
| 1171 | |
| 1172 | if (h->root.root.type == bfd_link_hash_defined |
| 1173 | || h->root.root.type == bfd_link_hash_defweak) |
| 1174 | { |
| 1175 | sec = h->root.root.u.def.section; |
| 1176 | val = (h->root.root.u.def.value |
| 1177 | + sec->output_section->vma |
| 1178 | + sec->output_offset); |
| 1179 | } |
| 1180 | else |
| 1181 | { |
| 1182 | if (! ((*info->callbacks->undefined_symbol) |
| 1183 | (info, h->root.root.root.string, input_bfd, input_section, |
| 1184 | rel->r_vaddr - input_section->vma, true))) |
| 1185 | return false; |
| 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | rstat = bfd_reloc_ok; |
| 1190 | |
| 1191 | /* Each case must do its own relocation, setting rstat appropriately */ |
| 1192 | switch (r_type) |
| 1193 | { |
| 1194 | default: |
| 1195 | (*_bfd_error_handler) |
| 1196 | (_("%s: unsupported relocation type 0x%02x"), |
| 1197 | bfd_get_filename (input_bfd), r_type); |
| 1198 | bfd_set_error (bfd_error_bad_value); |
| 1199 | return false; |
| 1200 | case IMAGE_REL_PPC_TOCREL16: |
| 1201 | { |
| 1202 | bfd_vma our_toc_offset; |
| 1203 | int fixit; |
| 1204 | |
| 1205 | DUMP_RELOC2(howto->name, rel); |
| 1206 | |
| 1207 | if (toc_section == 0) |
| 1208 | { |
| 1209 | toc_section = bfd_get_section_by_name (bfd_of_toc_owner, |
| 1210 | TOC_SECTION_NAME); |
| 1211 | |
| 1212 | if ( toc_section == NULL ) |
| 1213 | { |
| 1214 | /* There is no toc section. Something is very wrong. */ |
| 1215 | abort (); |
| 1216 | } |
| 1217 | } |
| 1218 | |
| 1219 | /* |
| 1220 | * Amazing bit tricks present. As we may have seen earlier, we |
| 1221 | * use the 1 bit to tell us whether or not a toc offset has been |
| 1222 | * allocated. Now that they've all been allocated, we will use |
| 1223 | * the 1 bit to tell us if we've written this particular toc |
| 1224 | * entry out. |
| 1225 | */ |
| 1226 | fixit = false; |
| 1227 | if (h == 0) |
| 1228 | { /* it is a file local symbol */ |
| 1229 | int *local_toc_table; |
| 1230 | const char *name; |
| 1231 | |
| 1232 | sym = syms + symndx; |
| 1233 | name = sym->_n._n_name; |
| 1234 | |
| 1235 | local_toc_table = obj_coff_local_toc_table(input_bfd); |
| 1236 | our_toc_offset = local_toc_table[symndx]; |
| 1237 | |
| 1238 | if (IS_WRITTEN(our_toc_offset)) |
| 1239 | { |
| 1240 | /* if it has been written out, it is marked with the |
| 1241 | 1 bit. Fix up our offset, but do not write it out |
| 1242 | again. |
| 1243 | */ |
| 1244 | MAKE_ADDR_AGAIN(our_toc_offset); |
| 1245 | } |
| 1246 | else |
| 1247 | { |
| 1248 | /* write out the toc entry */ |
| 1249 | record_toc(toc_section, |
| 1250 | our_toc_offset, |
| 1251 | priv, |
| 1252 | strdup(name)); |
| 1253 | |
| 1254 | bfd_put_32 (output_bfd, |
| 1255 | val, |
| 1256 | toc_section->contents + our_toc_offset); |
| 1257 | |
| 1258 | MARK_AS_WRITTEN(local_toc_table[symndx]); |
| 1259 | fixit = true; |
| 1260 | } |
| 1261 | } |
| 1262 | else |
| 1263 | { |
| 1264 | const char *name = h->root.root.root.string; |
| 1265 | our_toc_offset = h->toc_offset; |
| 1266 | |
| 1267 | if ((r_flags & IMAGE_REL_PPC_TOCDEFN) |
| 1268 | == IMAGE_REL_PPC_TOCDEFN ) |
| 1269 | { |
| 1270 | /* This is unbelievable cheese. Some knowledgable asm |
| 1271 | hacker has decided to use r2 as a base for loading |
| 1272 | a value. He/She does this by setting the tocdefn bit, |
| 1273 | and not supplying a toc definition. The behaviour is |
| 1274 | then to use the difference between the value of the |
| 1275 | symbol and the actual location of the toc as the toc |
| 1276 | index. |
| 1277 | |
| 1278 | In fact, what is usually happening is, because the |
| 1279 | Import Address Table is mapped immediately following |
| 1280 | the toc, some trippy library code trying for speed on |
| 1281 | dll linkage, takes advantage of that and considers |
| 1282 | the IAT to be part of the toc, thus saving a load. |
| 1283 | */ |
| 1284 | |
| 1285 | our_toc_offset = val - |
| 1286 | (toc_section->output_section->vma + |
| 1287 | toc_section->output_offset); |
| 1288 | |
| 1289 | /* The size must still fit in a 16bit displacment */ |
| 1290 | if (our_toc_offset >= 65535) |
| 1291 | { |
| 1292 | (*_bfd_error_handler) |
| 1293 | (_("%s: Relocation for %s of %x exceeds Toc size limit"), |
| 1294 | bfd_get_filename (input_bfd), name, our_toc_offset); |
| 1295 | bfd_set_error (bfd_error_bad_value); |
| 1296 | return false; |
| 1297 | } |
| 1298 | |
| 1299 | record_toc(toc_section, our_toc_offset, pub, strdup(name)); |
| 1300 | } |
| 1301 | else if (IS_WRITTEN(our_toc_offset)) |
| 1302 | { |
| 1303 | /* if it has been written out, it is marked with the |
| 1304 | 1 bit. Fix up our offset, but do not write it out |
| 1305 | again. |
| 1306 | */ |
| 1307 | MAKE_ADDR_AGAIN(our_toc_offset); |
| 1308 | } |
| 1309 | else |
| 1310 | { |
| 1311 | record_toc(toc_section, our_toc_offset, pub, strdup(name)); |
| 1312 | |
| 1313 | /* write out the toc entry */ |
| 1314 | bfd_put_32 (output_bfd, |
| 1315 | val, |
| 1316 | toc_section->contents + our_toc_offset); |
| 1317 | |
| 1318 | MARK_AS_WRITTEN(h->toc_offset); |
| 1319 | /* The tricky part is that this is the address that */ |
| 1320 | /* needs a .reloc entry for it */ |
| 1321 | fixit = true; |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | if (fixit && info->base_file) |
| 1326 | { |
| 1327 | /* So if this is non pcrelative, and is referenced |
| 1328 | to a section or a common symbol, then it needs a reloc */ |
| 1329 | |
| 1330 | /* relocation to a symbol in a section which |
| 1331 | isn't absolute - we output the address here |
| 1332 | to a file */ |
| 1333 | |
| 1334 | bfd_vma addr = toc_section->output_section->vma |
| 1335 | + toc_section->output_offset + our_toc_offset; |
| 1336 | |
| 1337 | if (coff_data(output_bfd)->pe) |
| 1338 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; |
| 1339 | |
| 1340 | fwrite (&addr, 1,4, (FILE *) info->base_file); |
| 1341 | } |
| 1342 | |
| 1343 | /* FIXME: this test is conservative */ |
| 1344 | if ( (r_flags & IMAGE_REL_PPC_TOCDEFN) != IMAGE_REL_PPC_TOCDEFN && |
| 1345 | our_toc_offset > toc_section->_raw_size) |
| 1346 | { |
| 1347 | (*_bfd_error_handler) |
| 1348 | (_("%s: Relocation exceeds allocated TOC (%x)"), |
| 1349 | bfd_get_filename (input_bfd), |
| 1350 | toc_section->_raw_size); |
| 1351 | bfd_set_error (bfd_error_bad_value); |
| 1352 | return false; |
| 1353 | } |
| 1354 | |
| 1355 | /* Now we know the relocation for this toc reference */ |
| 1356 | relocation = our_toc_offset + TOC_LOAD_ADJUSTMENT; |
| 1357 | rstat = _bfd_relocate_contents (howto, |
| 1358 | input_bfd, |
| 1359 | relocation, |
| 1360 | loc); |
| 1361 | } |
| 1362 | break; |
| 1363 | case IMAGE_REL_PPC_IFGLUE: |
| 1364 | { |
| 1365 | /* To solve this, we need to know whether or not the symbol */ |
| 1366 | /* appearing on the call instruction is a glue function or not. */ |
| 1367 | /* A glue function must announce itself via a IMGLUE reloc, and */ |
| 1368 | /* the reloc contains the required toc restore instruction */ |
| 1369 | |
| 1370 | bfd_vma x; |
| 1371 | const char *my_name; |
| 1372 | DUMP_RELOC2(howto->name, rel); |
| 1373 | |
| 1374 | if (h != 0) |
| 1375 | { |
| 1376 | my_name = h->root.root.root.string; |
| 1377 | if (h->symbol_is_glue == 1) |
| 1378 | { |
| 1379 | x = bfd_get_32 (input_bfd, loc); |
| 1380 | bfd_put_32 (input_bfd, h->glue_insn, loc); |
| 1381 | } |
| 1382 | } |
| 1383 | } |
| 1384 | break; |
| 1385 | case IMAGE_REL_PPC_SECREL: |
| 1386 | /* Unimplemented: codeview debugging information */ |
| 1387 | /* For fast access to the header of the section |
| 1388 | containing the item. */ |
| 1389 | break; |
| 1390 | case IMAGE_REL_PPC_SECTION: |
| 1391 | /* Unimplemented: codeview debugging information */ |
| 1392 | /* Is used to indicate that the value should be relative |
| 1393 | to the beginning of the section that contains the |
| 1394 | symbol */ |
| 1395 | break; |
| 1396 | case IMAGE_REL_PPC_ABSOLUTE: |
| 1397 | { |
| 1398 | const char *my_name; |
| 1399 | if (h == 0) |
| 1400 | my_name = (syms+symndx)->_n._n_name; |
| 1401 | else |
| 1402 | { |
| 1403 | my_name = h->root.root.root.string; |
| 1404 | } |
| 1405 | |
| 1406 | fprintf (stderr, |
| 1407 | _("Warning: unsupported reloc %s <file %s, section %s>\n"), |
| 1408 | howto->name, |
| 1409 | bfd_get_filename(input_bfd), |
| 1410 | input_section->name); |
| 1411 | |
| 1412 | fprintf (stderr,"sym %ld (%s), r_vaddr %ld (%lx)\n", |
| 1413 | rel->r_symndx, my_name, (long) rel->r_vaddr, |
| 1414 | (unsigned long) rel->r_vaddr); |
| 1415 | } |
| 1416 | break; |
| 1417 | case IMAGE_REL_PPC_IMGLUE: |
| 1418 | { |
| 1419 | /* There is nothing to do now. This reloc was noted in the first |
| 1420 | pass over the relocs, and the glue instruction extracted */ |
| 1421 | const char *my_name; |
| 1422 | if (h->symbol_is_glue == 1) |
| 1423 | break; |
| 1424 | my_name = h->root.root.root.string; |
| 1425 | |
| 1426 | (*_bfd_error_handler) |
| 1427 | (_("%s: Out of order IMGLUE reloc for %s"), |
| 1428 | bfd_get_filename (input_bfd), my_name); |
| 1429 | bfd_set_error (bfd_error_bad_value); |
| 1430 | return false; |
| 1431 | } |
| 1432 | |
| 1433 | case IMAGE_REL_PPC_ADDR32NB: |
| 1434 | { |
| 1435 | struct coff_link_hash_entry *myh = 0; |
| 1436 | const char *name = 0; |
| 1437 | DUMP_RELOC2(howto->name, rel); |
| 1438 | |
| 1439 | if (strncmp(".idata$2",input_section->name,8) == 0 && first_thunk_address == 0) |
| 1440 | { |
| 1441 | /* set magic values */ |
| 1442 | int idata5offset; |
| 1443 | struct coff_link_hash_entry *myh = 0; |
| 1444 | myh = coff_link_hash_lookup (coff_hash_table (info), |
| 1445 | "__idata5_magic__", |
| 1446 | false, false, true); |
| 1447 | first_thunk_address = myh->root.u.def.value + |
| 1448 | sec->output_section->vma + |
| 1449 | sec->output_offset - |
| 1450 | pe_data(output_bfd)->pe_opthdr.ImageBase; |
| 1451 | |
| 1452 | idata5offset = myh->root.u.def.value; |
| 1453 | myh = coff_link_hash_lookup (coff_hash_table (info), |
| 1454 | "__idata6_magic__", |
| 1455 | false, false, true); |
| 1456 | |
| 1457 | thunk_size = myh->root.u.def.value - idata5offset; |
| 1458 | myh = coff_link_hash_lookup (coff_hash_table (info), |
| 1459 | "__idata4_magic__", |
| 1460 | false, false, true); |
| 1461 | import_table_size = myh->root.u.def.value; |
| 1462 | } |
| 1463 | |
| 1464 | if (h == 0) |
| 1465 | { /* it is a file local symbol */ |
| 1466 | sym = syms + symndx; |
| 1467 | name = sym->_n._n_name; |
| 1468 | } |
| 1469 | else |
| 1470 | { |
| 1471 | char *target = 0; |
| 1472 | |
| 1473 | name = h->root.root.root.string; |
| 1474 | if (strcmp(".idata$2", name) == 0) |
| 1475 | target = "__idata2_magic__"; |
| 1476 | else if (strcmp(".idata$4", name) == 0) |
| 1477 | target = "__idata4_magic__"; |
| 1478 | else if (strcmp(".idata$5", name) == 0) |
| 1479 | target = "__idata5_magic__"; |
| 1480 | |
| 1481 | if (target != 0) |
| 1482 | { |
| 1483 | myh = 0; |
| 1484 | |
| 1485 | myh = coff_link_hash_lookup (coff_hash_table (info), |
| 1486 | target, |
| 1487 | false, false, true); |
| 1488 | if (myh == 0) |
| 1489 | { |
| 1490 | /* Missing magic cookies. Something is very wrong. */ |
| 1491 | abort (); |
| 1492 | } |
| 1493 | |
| 1494 | val = myh->root.u.def.value + |
| 1495 | sec->output_section->vma + sec->output_offset; |
| 1496 | if (first_thunk_address == 0) |
| 1497 | { |
| 1498 | int idata5offset; |
| 1499 | myh = coff_link_hash_lookup (coff_hash_table (info), |
| 1500 | "__idata5_magic__", |
| 1501 | false, false, true); |
| 1502 | first_thunk_address = myh->root.u.def.value + |
| 1503 | sec->output_section->vma + |
| 1504 | sec->output_offset - |
| 1505 | pe_data(output_bfd)->pe_opthdr.ImageBase; |
| 1506 | |
| 1507 | idata5offset = myh->root.u.def.value; |
| 1508 | myh = coff_link_hash_lookup (coff_hash_table (info), |
| 1509 | "__idata6_magic__", |
| 1510 | false, false, true); |
| 1511 | |
| 1512 | thunk_size = myh->root.u.def.value - idata5offset; |
| 1513 | myh = coff_link_hash_lookup (coff_hash_table (info), |
| 1514 | "__idata4_magic__", |
| 1515 | false, false, true); |
| 1516 | import_table_size = myh->root.u.def.value; |
| 1517 | } |
| 1518 | } |
| 1519 | } |
| 1520 | |
| 1521 | rstat = _bfd_relocate_contents (howto, |
| 1522 | input_bfd, |
| 1523 | val - |
| 1524 | pe_data(output_bfd)->pe_opthdr.ImageBase, |
| 1525 | loc); |
| 1526 | } |
| 1527 | break; |
| 1528 | |
| 1529 | case IMAGE_REL_PPC_REL24: |
| 1530 | DUMP_RELOC2(howto->name, rel); |
| 1531 | val -= (input_section->output_section->vma |
| 1532 | + input_section->output_offset); |
| 1533 | |
| 1534 | rstat = _bfd_relocate_contents (howto, |
| 1535 | input_bfd, |
| 1536 | val, |
| 1537 | loc); |
| 1538 | break; |
| 1539 | case IMAGE_REL_PPC_ADDR16: |
| 1540 | case IMAGE_REL_PPC_ADDR24: |
| 1541 | case IMAGE_REL_PPC_ADDR32: |
| 1542 | DUMP_RELOC2(howto->name, rel); |
| 1543 | rstat = _bfd_relocate_contents (howto, |
| 1544 | input_bfd, |
| 1545 | val, |
| 1546 | loc); |
| 1547 | break; |
| 1548 | } |
| 1549 | |
| 1550 | if ( info->base_file ) |
| 1551 | { |
| 1552 | /* So if this is non pcrelative, and is referenced |
| 1553 | to a section or a common symbol, then it needs a reloc */ |
| 1554 | if (sym && pe_data(output_bfd)->in_reloc_p(output_bfd, howto)) |
| 1555 | { |
| 1556 | /* relocation to a symbol in a section which |
| 1557 | isn't absolute - we output the address here |
| 1558 | to a file */ |
| 1559 | bfd_vma addr = rel->r_vaddr |
| 1560 | - input_section->vma |
| 1561 | + input_section->output_offset |
| 1562 | + input_section->output_section->vma; |
| 1563 | |
| 1564 | if (coff_data(output_bfd)->pe) |
| 1565 | { |
| 1566 | addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; |
| 1567 | } |
| 1568 | fwrite (&addr, 1,4, (FILE *) info->base_file); |
| 1569 | } |
| 1570 | } |
| 1571 | |
| 1572 | switch (rstat) |
| 1573 | { |
| 1574 | default: |
| 1575 | abort (); |
| 1576 | case bfd_reloc_ok: |
| 1577 | break; |
| 1578 | case bfd_reloc_overflow: |
| 1579 | { |
| 1580 | const char *name; |
| 1581 | char buf[SYMNMLEN + 1]; |
| 1582 | |
| 1583 | if (symndx == -1) |
| 1584 | name = "*ABS*"; |
| 1585 | else if (h != NULL) |
| 1586 | name = h->root.root.root.string; |
| 1587 | else if (sym == NULL) |
| 1588 | name = "*unknown*"; |
| 1589 | else if (sym->_n._n_n._n_zeroes == 0 |
| 1590 | && sym->_n._n_n._n_offset != 0) |
| 1591 | name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset; |
| 1592 | else |
| 1593 | { |
| 1594 | strncpy (buf, sym->_n._n_name, SYMNMLEN); |
| 1595 | buf[SYMNMLEN] = '\0'; |
| 1596 | name = buf; |
| 1597 | } |
| 1598 | |
| 1599 | if (! ((*info->callbacks->reloc_overflow) |
| 1600 | (info, name, howto->name, |
| 1601 | (bfd_vma) 0, input_bfd, |
| 1602 | input_section, rel->r_vaddr - input_section->vma))) |
| 1603 | { |
| 1604 | return false; |
| 1605 | } |
| 1606 | } |
| 1607 | } |
| 1608 | |
| 1609 | } |
| 1610 | |
| 1611 | return true; |
| 1612 | } |
| 1613 | |
| 1614 | #ifdef COFF_IMAGE_WITH_PE |
| 1615 | |
| 1616 | /* FIXME: BFD should not use global variables. This file is compiled |
| 1617 | twice, and these variables are shared. This is confusing and |
| 1618 | weird. */ |
| 1619 | |
| 1620 | long int global_toc_size = 4; |
| 1621 | |
| 1622 | bfd* bfd_of_toc_owner = 0; |
| 1623 | |
| 1624 | long int import_table_size; |
| 1625 | long int first_thunk_address; |
| 1626 | long int thunk_size; |
| 1627 | |
| 1628 | struct list_ele *head; |
| 1629 | struct list_ele *tail; |
| 1630 | |
| 1631 | static char * |
| 1632 | h1 = N_("\n\t\t\tTOC MAPPING\n\n"); |
| 1633 | static char * |
| 1634 | h2 = N_(" TOC disassembly Comments Name\n"); |
| 1635 | static char * |
| 1636 | h3 = N_(" Offset spelling (if present)\n"); |
| 1637 | |
| 1638 | void |
| 1639 | dump_toc (vfile) |
| 1640 | PTR vfile; |
| 1641 | { |
| 1642 | FILE *file = (FILE *) vfile; |
| 1643 | struct list_ele *t; |
| 1644 | |
| 1645 | fprintf (file, _(h1)); |
| 1646 | fprintf (file, _(h2)); |
| 1647 | fprintf (file, _(h3)); |
| 1648 | |
| 1649 | for (t = head; t != 0; t=t->next) |
| 1650 | { |
| 1651 | const char *cat = ""; |
| 1652 | |
| 1653 | if (t->cat == priv) |
| 1654 | cat = _("private "); |
| 1655 | else if (t->cat == pub) |
| 1656 | cat = _("public "); |
| 1657 | else if (t->cat == data) |
| 1658 | cat = _("data-in-toc "); |
| 1659 | |
| 1660 | if (t->offset > global_toc_size) |
| 1661 | { |
| 1662 | if (t->offset <= global_toc_size + thunk_size) |
| 1663 | cat = _("IAT reference "); |
| 1664 | else |
| 1665 | { |
| 1666 | fprintf (file, |
| 1667 | _("**** global_toc_size %ld(%lx), thunk_size %ld(%lx)\n"), |
| 1668 | global_toc_size, global_toc_size, thunk_size, thunk_size); |
| 1669 | cat = _("Out of bounds!"); |
| 1670 | } |
| 1671 | } |
| 1672 | |
| 1673 | fprintf (file, |
| 1674 | " %04lx (%d)", (unsigned long) t->offset, t->offset - 32768); |
| 1675 | fprintf (file, |
| 1676 | " %s %s\n", |
| 1677 | cat, t->name); |
| 1678 | |
| 1679 | } |
| 1680 | |
| 1681 | fprintf (file, "\n"); |
| 1682 | } |
| 1683 | |
| 1684 | boolean |
| 1685 | ppc_allocate_toc_section (info) |
| 1686 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 1687 | { |
| 1688 | asection *s; |
| 1689 | bfd_byte *foo; |
| 1690 | static char test_char = '1'; |
| 1691 | |
| 1692 | if ( global_toc_size == 0 ) /* FIXME: does this get me in trouble? */ |
| 1693 | return true; |
| 1694 | |
| 1695 | if (bfd_of_toc_owner == 0) |
| 1696 | { |
| 1697 | /* No toc owner? Something is very wrong. */ |
| 1698 | abort (); |
| 1699 | } |
| 1700 | |
| 1701 | s = bfd_get_section_by_name ( bfd_of_toc_owner , TOC_SECTION_NAME); |
| 1702 | if (s == NULL) |
| 1703 | { |
| 1704 | /* No toc section? Something is very wrong. */ |
| 1705 | abort (); |
| 1706 | } |
| 1707 | |
| 1708 | foo = (bfd_byte *) bfd_alloc(bfd_of_toc_owner, global_toc_size); |
| 1709 | memset(foo, test_char, global_toc_size); |
| 1710 | |
| 1711 | s->_raw_size = s->_cooked_size = global_toc_size; |
| 1712 | s->contents = foo; |
| 1713 | |
| 1714 | return true; |
| 1715 | } |
| 1716 | |
| 1717 | boolean |
| 1718 | ppc_process_before_allocation (abfd, info) |
| 1719 | bfd *abfd; |
| 1720 | struct bfd_link_info *info; |
| 1721 | { |
| 1722 | asection *sec; |
| 1723 | struct internal_reloc *i, *rel; |
| 1724 | |
| 1725 | /* here we have a bfd that is to be included on the link. We have a hook |
| 1726 | to do reloc rummaging, before section sizes are nailed down. */ |
| 1727 | |
| 1728 | _bfd_coff_get_external_symbols(abfd); |
| 1729 | |
| 1730 | /* rummage around all the relocs and map the toc */ |
| 1731 | sec = abfd->sections; |
| 1732 | |
| 1733 | if (sec == 0) |
| 1734 | { |
| 1735 | return true; |
| 1736 | } |
| 1737 | |
| 1738 | for (; sec != 0; sec = sec->next) |
| 1739 | { |
| 1740 | if (sec->reloc_count == 0) |
| 1741 | continue; |
| 1742 | |
| 1743 | /* load the relocs */ |
| 1744 | /* FIXME: there may be a storage leak here */ |
| 1745 | i=_bfd_coff_read_internal_relocs(abfd,sec,1,0,0,0); |
| 1746 | |
| 1747 | if (i == 0) |
| 1748 | abort (); |
| 1749 | |
| 1750 | for (rel=i;rel<i+sec->reloc_count;++rel) |
| 1751 | { |
| 1752 | unsigned short r_type = EXTRACT_TYPE (rel->r_type); |
| 1753 | unsigned short r_flags = EXTRACT_FLAGS(rel->r_type); |
| 1754 | boolean ok = true; |
| 1755 | |
| 1756 | DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel); |
| 1757 | |
| 1758 | switch(r_type) |
| 1759 | { |
| 1760 | case IMAGE_REL_PPC_TOCREL16: |
| 1761 | /* if TOCDEFN is on, ignore as someone else has allocated the |
| 1762 | toc entry */ |
| 1763 | if ( (r_flags & IMAGE_REL_PPC_TOCDEFN) != IMAGE_REL_PPC_TOCDEFN ) |
| 1764 | ok = ppc_record_toc_entry(abfd, info, sec, |
| 1765 | rel->r_symndx, default_toc); |
| 1766 | if (!ok) |
| 1767 | return false; |
| 1768 | break; |
| 1769 | case IMAGE_REL_PPC_IMGLUE: |
| 1770 | ppc_mark_symbol_as_glue(abfd, rel->r_symndx, rel); |
| 1771 | break; |
| 1772 | default: |
| 1773 | break; |
| 1774 | } |
| 1775 | } |
| 1776 | } |
| 1777 | |
| 1778 | return true; |
| 1779 | } |
| 1780 | |
| 1781 | #endif |
| 1782 | |
| 1783 | static bfd_reloc_status_type |
| 1784 | ppc_refhi_reloc (abfd, |
| 1785 | reloc_entry, |
| 1786 | symbol, |
| 1787 | data, |
| 1788 | input_section, |
| 1789 | output_bfd, |
| 1790 | error_message) |
| 1791 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1792 | arelent *reloc_entry ATTRIBUTE_UNUSED; |
| 1793 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 1794 | PTR data ATTRIBUTE_UNUSED; |
| 1795 | asection *input_section ATTRIBUTE_UNUSED; |
| 1796 | bfd *output_bfd; |
| 1797 | char **error_message ATTRIBUTE_UNUSED; |
| 1798 | { |
| 1799 | UN_IMPL("REFHI"); |
| 1800 | DUMP_RELOC("REFHI",reloc_entry); |
| 1801 | |
| 1802 | if (output_bfd == (bfd *) NULL) |
| 1803 | return bfd_reloc_continue; |
| 1804 | |
| 1805 | return bfd_reloc_undefined; |
| 1806 | } |
| 1807 | |
| 1808 | #if 0 |
| 1809 | |
| 1810 | static bfd_reloc_status_type |
| 1811 | ppc_reflo_reloc (abfd, |
| 1812 | reloc_entry, |
| 1813 | symbol, |
| 1814 | data, |
| 1815 | input_section, |
| 1816 | output_bfd, |
| 1817 | error_message) |
| 1818 | bfd *abfd; |
| 1819 | arelent *reloc_entry; |
| 1820 | asymbol *symbol; |
| 1821 | PTR data; |
| 1822 | asection *input_section; |
| 1823 | bfd *output_bfd; |
| 1824 | char **error_message; |
| 1825 | { |
| 1826 | UN_IMPL("REFLO"); |
| 1827 | DUMP_RELOC("REFLO",reloc_entry); |
| 1828 | |
| 1829 | if (output_bfd == (bfd *) NULL) |
| 1830 | return bfd_reloc_continue; |
| 1831 | |
| 1832 | return bfd_reloc_undefined; |
| 1833 | } |
| 1834 | |
| 1835 | #endif |
| 1836 | |
| 1837 | static bfd_reloc_status_type |
| 1838 | ppc_pair_reloc (abfd, |
| 1839 | reloc_entry, |
| 1840 | symbol, |
| 1841 | data, |
| 1842 | input_section, |
| 1843 | output_bfd, |
| 1844 | error_message) |
| 1845 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1846 | arelent *reloc_entry ATTRIBUTE_UNUSED; |
| 1847 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 1848 | PTR data ATTRIBUTE_UNUSED; |
| 1849 | asection *input_section ATTRIBUTE_UNUSED; |
| 1850 | bfd *output_bfd; |
| 1851 | char **error_message ATTRIBUTE_UNUSED; |
| 1852 | { |
| 1853 | UN_IMPL("PAIR"); |
| 1854 | DUMP_RELOC("PAIR",reloc_entry); |
| 1855 | |
| 1856 | if (output_bfd == (bfd *) NULL) |
| 1857 | return bfd_reloc_continue; |
| 1858 | |
| 1859 | return bfd_reloc_undefined; |
| 1860 | } |
| 1861 | \f |
| 1862 | static bfd_reloc_status_type |
| 1863 | ppc_toc16_reloc (abfd, |
| 1864 | reloc_entry, |
| 1865 | symbol, |
| 1866 | data, |
| 1867 | input_section, |
| 1868 | output_bfd, |
| 1869 | error_message) |
| 1870 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1871 | arelent *reloc_entry ATTRIBUTE_UNUSED; |
| 1872 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 1873 | PTR data ATTRIBUTE_UNUSED; |
| 1874 | asection *input_section ATTRIBUTE_UNUSED; |
| 1875 | bfd *output_bfd; |
| 1876 | char **error_message ATTRIBUTE_UNUSED; |
| 1877 | { |
| 1878 | UN_IMPL("TOCREL16"); |
| 1879 | DUMP_RELOC("TOCREL16",reloc_entry); |
| 1880 | |
| 1881 | if (output_bfd == (bfd *) NULL) |
| 1882 | { |
| 1883 | return bfd_reloc_continue; |
| 1884 | } |
| 1885 | |
| 1886 | return bfd_reloc_ok; |
| 1887 | } |
| 1888 | |
| 1889 | #if 0 |
| 1890 | |
| 1891 | /* ADDR32NB : 32 bit address relative to the virtual origin. */ |
| 1892 | /* (On the alpha, this is always a linker generated thunk)*/ |
| 1893 | /* (i.e. 32bit addr relative to the image base) */ |
| 1894 | /* */ |
| 1895 | /* */ |
| 1896 | |
| 1897 | static bfd_reloc_status_type |
| 1898 | ppc_addr32nb_reloc (abfd, |
| 1899 | reloc_entry, |
| 1900 | symbol, |
| 1901 | data, |
| 1902 | input_section, |
| 1903 | output_bfd, |
| 1904 | error_message) |
| 1905 | bfd *abfd; |
| 1906 | arelent *reloc_entry; |
| 1907 | asymbol *symbol; |
| 1908 | PTR data; |
| 1909 | asection *input_section; |
| 1910 | bfd *output_bfd; |
| 1911 | char **error_message; |
| 1912 | { |
| 1913 | UN_IMPL("ADDR32NB"); |
| 1914 | DUMP_RELOC("ADDR32NB",reloc_entry); |
| 1915 | |
| 1916 | return bfd_reloc_ok; |
| 1917 | } |
| 1918 | |
| 1919 | #endif |
| 1920 | |
| 1921 | static bfd_reloc_status_type |
| 1922 | ppc_secrel_reloc (abfd, |
| 1923 | reloc_entry, |
| 1924 | symbol, |
| 1925 | data, |
| 1926 | input_section, |
| 1927 | output_bfd, |
| 1928 | error_message) |
| 1929 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1930 | arelent *reloc_entry ATTRIBUTE_UNUSED; |
| 1931 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 1932 | PTR data ATTRIBUTE_UNUSED; |
| 1933 | asection *input_section ATTRIBUTE_UNUSED; |
| 1934 | bfd *output_bfd; |
| 1935 | char **error_message ATTRIBUTE_UNUSED; |
| 1936 | { |
| 1937 | UN_IMPL("SECREL"); |
| 1938 | DUMP_RELOC("SECREL",reloc_entry); |
| 1939 | |
| 1940 | if (output_bfd == (bfd *) NULL) |
| 1941 | return bfd_reloc_continue; |
| 1942 | |
| 1943 | return bfd_reloc_ok; |
| 1944 | } |
| 1945 | |
| 1946 | static bfd_reloc_status_type |
| 1947 | ppc_section_reloc (abfd, |
| 1948 | reloc_entry, |
| 1949 | symbol, |
| 1950 | data, |
| 1951 | input_section, |
| 1952 | output_bfd, |
| 1953 | error_message) |
| 1954 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1955 | arelent *reloc_entry ATTRIBUTE_UNUSED; |
| 1956 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 1957 | PTR data ATTRIBUTE_UNUSED; |
| 1958 | asection *input_section ATTRIBUTE_UNUSED; |
| 1959 | bfd *output_bfd; |
| 1960 | char **error_message ATTRIBUTE_UNUSED; |
| 1961 | { |
| 1962 | UN_IMPL("SECTION"); |
| 1963 | DUMP_RELOC("SECTION",reloc_entry); |
| 1964 | |
| 1965 | if (output_bfd == (bfd *) NULL) |
| 1966 | return bfd_reloc_continue; |
| 1967 | |
| 1968 | return bfd_reloc_ok; |
| 1969 | } |
| 1970 | |
| 1971 | static bfd_reloc_status_type |
| 1972 | ppc_imglue_reloc (abfd, |
| 1973 | reloc_entry, |
| 1974 | symbol, |
| 1975 | data, |
| 1976 | input_section, |
| 1977 | output_bfd, |
| 1978 | error_message) |
| 1979 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1980 | arelent *reloc_entry ATTRIBUTE_UNUSED; |
| 1981 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 1982 | PTR data ATTRIBUTE_UNUSED; |
| 1983 | asection *input_section ATTRIBUTE_UNUSED; |
| 1984 | bfd *output_bfd; |
| 1985 | char **error_message ATTRIBUTE_UNUSED; |
| 1986 | { |
| 1987 | UN_IMPL("IMGLUE"); |
| 1988 | DUMP_RELOC("IMGLUE",reloc_entry); |
| 1989 | |
| 1990 | if (output_bfd == (bfd *) NULL) |
| 1991 | return bfd_reloc_continue; |
| 1992 | |
| 1993 | return bfd_reloc_ok; |
| 1994 | } |
| 1995 | \f |
| 1996 | #define MAX_RELOC_INDEX \ |
| 1997 | (sizeof (ppc_coff_howto_table) / sizeof (ppc_coff_howto_table[0]) - 1) |
| 1998 | |
| 1999 | /* FIXME: There is a possiblity that when we read in a reloc from a file, |
| 2000 | that there are some bits encoded in the upper portion of the |
| 2001 | type field. Not yet implemented. |
| 2002 | */ |
| 2003 | static void ppc_coff_rtype2howto PARAMS ((arelent *relent, |
| 2004 | struct internal_reloc *internal)); |
| 2005 | |
| 2006 | static void |
| 2007 | ppc_coff_rtype2howto (relent, internal) |
| 2008 | arelent *relent; |
| 2009 | struct internal_reloc *internal; |
| 2010 | { |
| 2011 | |
| 2012 | /* We can encode one of three things in the type field, aside from the |
| 2013 | type: |
| 2014 | 1. IMAGE_REL_PPC_NEG - indicates the value field is a subtraction |
| 2015 | value, rather than an addition value |
| 2016 | 2. IMAGE_REL_PPC_BRTAKEN, IMAGE_REL_PPC_BRNTAKEN - indicates that |
| 2017 | the branch is expected to be taken or not. |
| 2018 | 3. IMAGE_REL_PPC_TOCDEFN - toc slot definition in the file |
| 2019 | For now, we just strip this stuff to find the type, and ignore it other |
| 2020 | than that. |
| 2021 | */ |
| 2022 | reloc_howto_type *howto; |
| 2023 | unsigned short r_type = EXTRACT_TYPE (internal->r_type); |
| 2024 | unsigned short r_flags = EXTRACT_FLAGS(internal->r_type); |
| 2025 | unsigned short junk = EXTRACT_JUNK (internal->r_type); |
| 2026 | |
| 2027 | /* the masking process only slices off the bottom byte for r_type. */ |
| 2028 | if ( r_type > MAX_RELOC_INDEX ) |
| 2029 | abort (); |
| 2030 | |
| 2031 | /* check for absolute crap */ |
| 2032 | if ( junk != 0 ) |
| 2033 | abort (); |
| 2034 | |
| 2035 | switch(r_type) |
| 2036 | { |
| 2037 | case IMAGE_REL_PPC_ADDR16: |
| 2038 | case IMAGE_REL_PPC_REL24: |
| 2039 | case IMAGE_REL_PPC_ADDR24: |
| 2040 | case IMAGE_REL_PPC_ADDR32: |
| 2041 | case IMAGE_REL_PPC_IFGLUE: |
| 2042 | case IMAGE_REL_PPC_ADDR32NB: |
| 2043 | case IMAGE_REL_PPC_SECTION: |
| 2044 | case IMAGE_REL_PPC_SECREL: |
| 2045 | DUMP_RELOC2(ppc_coff_howto_table[r_type].name, internal); |
| 2046 | howto = ppc_coff_howto_table + r_type; |
| 2047 | break; |
| 2048 | case IMAGE_REL_PPC_IMGLUE: |
| 2049 | DUMP_RELOC2(ppc_coff_howto_table[r_type].name, internal); |
| 2050 | howto = ppc_coff_howto_table + r_type; |
| 2051 | break; |
| 2052 | case IMAGE_REL_PPC_TOCREL16: |
| 2053 | DUMP_RELOC2(ppc_coff_howto_table[r_type].name, internal); |
| 2054 | if (r_flags & IMAGE_REL_PPC_TOCDEFN) |
| 2055 | howto = ppc_coff_howto_table + IMAGE_REL_PPC_TOCREL16_DEFN; |
| 2056 | else |
| 2057 | howto = ppc_coff_howto_table + IMAGE_REL_PPC_TOCREL16; |
| 2058 | break; |
| 2059 | default: |
| 2060 | fprintf (stderr, |
| 2061 | _("Warning: Unsupported reloc %s [%d] used -- it may not work.\n"), |
| 2062 | ppc_coff_howto_table[r_type].name, |
| 2063 | r_type); |
| 2064 | howto = ppc_coff_howto_table + r_type; |
| 2065 | break; |
| 2066 | } |
| 2067 | |
| 2068 | relent->howto = howto; |
| 2069 | |
| 2070 | } |
| 2071 | |
| 2072 | static reloc_howto_type * |
| 2073 | coff_ppc_rtype_to_howto (abfd, sec, rel, h, sym, addendp) |
| 2074 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2075 | asection *sec; |
| 2076 | struct internal_reloc *rel; |
| 2077 | struct coff_link_hash_entry *h ATTRIBUTE_UNUSED; |
| 2078 | struct internal_syment *sym ATTRIBUTE_UNUSED; |
| 2079 | bfd_vma *addendp; |
| 2080 | { |
| 2081 | reloc_howto_type *howto; |
| 2082 | |
| 2083 | /* We can encode one of three things in the type field, aside from the |
| 2084 | type: |
| 2085 | 1. IMAGE_REL_PPC_NEG - indicates the value field is a subtraction |
| 2086 | value, rather than an addition value |
| 2087 | 2. IMAGE_REL_PPC_BRTAKEN, IMAGE_REL_PPC_BRNTAKEN - indicates that |
| 2088 | the branch is expected to be taken or not. |
| 2089 | 3. IMAGE_REL_PPC_TOCDEFN - toc slot definition in the file |
| 2090 | For now, we just strip this stuff to find the type, and ignore it other |
| 2091 | than that. |
| 2092 | */ |
| 2093 | |
| 2094 | unsigned short r_type = EXTRACT_TYPE (rel->r_type); |
| 2095 | unsigned short r_flags = EXTRACT_FLAGS(rel->r_type); |
| 2096 | unsigned short junk = EXTRACT_JUNK (rel->r_type); |
| 2097 | |
| 2098 | /* the masking process only slices off the bottom byte for r_type. */ |
| 2099 | if ( r_type > MAX_RELOC_INDEX ) |
| 2100 | abort (); |
| 2101 | |
| 2102 | /* check for absolute crap */ |
| 2103 | if ( junk != 0 ) |
| 2104 | abort (); |
| 2105 | |
| 2106 | switch(r_type) |
| 2107 | { |
| 2108 | case IMAGE_REL_PPC_ADDR32NB: |
| 2109 | DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel); |
| 2110 | *addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase; |
| 2111 | howto = ppc_coff_howto_table + r_type; |
| 2112 | break; |
| 2113 | case IMAGE_REL_PPC_TOCREL16: |
| 2114 | DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel); |
| 2115 | if (r_flags & IMAGE_REL_PPC_TOCDEFN) |
| 2116 | howto = ppc_coff_howto_table + IMAGE_REL_PPC_TOCREL16_DEFN; |
| 2117 | else |
| 2118 | howto = ppc_coff_howto_table + IMAGE_REL_PPC_TOCREL16; |
| 2119 | break; |
| 2120 | case IMAGE_REL_PPC_ADDR16: |
| 2121 | case IMAGE_REL_PPC_REL24: |
| 2122 | case IMAGE_REL_PPC_ADDR24: |
| 2123 | case IMAGE_REL_PPC_ADDR32: |
| 2124 | case IMAGE_REL_PPC_IFGLUE: |
| 2125 | case IMAGE_REL_PPC_SECTION: |
| 2126 | case IMAGE_REL_PPC_SECREL: |
| 2127 | DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel); |
| 2128 | howto = ppc_coff_howto_table + r_type; |
| 2129 | break; |
| 2130 | case IMAGE_REL_PPC_IMGLUE: |
| 2131 | DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel); |
| 2132 | howto = ppc_coff_howto_table + r_type; |
| 2133 | break; |
| 2134 | default: |
| 2135 | fprintf (stderr, |
| 2136 | _("Warning: Unsupported reloc %s [%d] used -- it may not work.\n"), |
| 2137 | ppc_coff_howto_table[r_type].name, |
| 2138 | r_type); |
| 2139 | howto = ppc_coff_howto_table + r_type; |
| 2140 | break; |
| 2141 | } |
| 2142 | |
| 2143 | return howto; |
| 2144 | } |
| 2145 | |
| 2146 | /* a cheesy little macro to make the code a little more readable */ |
| 2147 | #define HOW2MAP(bfd_rtype,ppc_rtype) \ |
| 2148 | case bfd_rtype: return &ppc_coff_howto_table[ppc_rtype] |
| 2149 | |
| 2150 | static reloc_howto_type *ppc_coff_reloc_type_lookup |
| 2151 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 2152 | |
| 2153 | static reloc_howto_type * |
| 2154 | ppc_coff_reloc_type_lookup (abfd, code) |
| 2155 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2156 | bfd_reloc_code_real_type code; |
| 2157 | { |
| 2158 | switch (code) |
| 2159 | { |
| 2160 | HOW2MAP(BFD_RELOC_32_GOTOFF, IMAGE_REL_PPC_IMGLUE); |
| 2161 | HOW2MAP(BFD_RELOC_16_GOT_PCREL, IMAGE_REL_PPC_IFGLUE); |
| 2162 | HOW2MAP(BFD_RELOC_16, IMAGE_REL_PPC_ADDR16); |
| 2163 | HOW2MAP(BFD_RELOC_PPC_B26, IMAGE_REL_PPC_REL24); |
| 2164 | HOW2MAP(BFD_RELOC_PPC_BA26, IMAGE_REL_PPC_ADDR24); |
| 2165 | HOW2MAP(BFD_RELOC_PPC_TOC16, IMAGE_REL_PPC_TOCREL16); |
| 2166 | HOW2MAP(BFD_RELOC_16_GOTOFF, IMAGE_REL_PPC_TOCREL16_DEFN); |
| 2167 | HOW2MAP(BFD_RELOC_32, IMAGE_REL_PPC_ADDR32); |
| 2168 | HOW2MAP(BFD_RELOC_RVA, IMAGE_REL_PPC_ADDR32NB); |
| 2169 | default: |
| 2170 | return NULL; |
| 2171 | } |
| 2172 | /*NOTREACHED*/ |
| 2173 | } |
| 2174 | |
| 2175 | #undef HOW2MAP |
| 2176 | \f |
| 2177 | /* Tailor coffcode.h -- macro heaven. */ |
| 2178 | |
| 2179 | #define RTYPE2HOWTO(cache_ptr, dst) ppc_coff_rtype2howto (cache_ptr, dst) |
| 2180 | |
| 2181 | #ifndef COFF_IMAGE_WITH_PE |
| 2182 | static void ppc_coff_swap_sym_in_hook PARAMS ((bfd *, PTR, PTR)); |
| 2183 | #endif |
| 2184 | |
| 2185 | /* We use the special COFF backend linker, with our own special touch. */ |
| 2186 | |
| 2187 | #define coff_bfd_reloc_type_lookup ppc_coff_reloc_type_lookup |
| 2188 | #define coff_rtype_to_howto coff_ppc_rtype_to_howto |
| 2189 | #define coff_relocate_section coff_ppc_relocate_section |
| 2190 | #define coff_bfd_final_link ppc_bfd_coff_final_link |
| 2191 | |
| 2192 | #ifndef COFF_IMAGE_WITH_PE |
| 2193 | /* FIXME: This no longer works. */ |
| 2194 | #define coff_swap_sym_in_hook ppc_coff_swap_sym_in_hook |
| 2195 | #endif |
| 2196 | |
| 2197 | #define SELECT_RELOC(internal, howto) {internal.r_type=howto->type;} |
| 2198 | |
| 2199 | #define COFF_PAGE_SIZE 0x1000 |
| 2200 | |
| 2201 | /* FIXME: This controls some code that used to be in peicode.h and is |
| 2202 | now in peigen.c. It will not control the code in peigen.c. If |
| 2203 | anybody wants to get this working, you will need to fix that. */ |
| 2204 | #define POWERPC_LE_PE |
| 2205 | |
| 2206 | #define COFF_SECTION_ALIGNMENT_ENTRIES \ |
| 2207 | { COFF_SECTION_NAME_EXACT_MATCH (".idata$2"), \ |
| 2208 | COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \ |
| 2209 | { COFF_SECTION_NAME_EXACT_MATCH (".idata$3"), \ |
| 2210 | COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \ |
| 2211 | { COFF_SECTION_NAME_EXACT_MATCH (".idata$4"), \ |
| 2212 | COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \ |
| 2213 | { COFF_SECTION_NAME_EXACT_MATCH (".idata$5"), \ |
| 2214 | COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \ |
| 2215 | { COFF_SECTION_NAME_EXACT_MATCH (".idata$6"), \ |
| 2216 | COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 1 }, \ |
| 2217 | { COFF_SECTION_NAME_EXACT_MATCH (".reloc"), \ |
| 2218 | COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 1 } |
| 2219 | |
| 2220 | #include "coffcode.h" |
| 2221 | \f |
| 2222 | #ifndef COFF_IMAGE_WITH_PE |
| 2223 | /* FIXME: |
| 2224 | What we're trying to do here is allocate a toc section (early), and attach |
| 2225 | it to the last bfd to be processed. This avoids the problem of having a toc |
| 2226 | written out before all files have been processed. This code allocates |
| 2227 | a toc section for every file, and records the last one seen. There are |
| 2228 | at least two problems with this approach: |
| 2229 | 1. We allocate whole bunches of toc sections that are ignored, but at |
| 2230 | at least we will not allocate a toc if no .toc is present. |
| 2231 | 2. It's not clear to me that being the last bfd read necessarily means |
| 2232 | that you are the last bfd closed. |
| 2233 | 3. Doing it on a "swap in" hook depends on when the "swap in" is called, |
| 2234 | and how often, etc. It's not clear to me that there isn't a hole here. |
| 2235 | */ |
| 2236 | |
| 2237 | static void |
| 2238 | ppc_coff_swap_sym_in_hook (abfd, ext1, in1) |
| 2239 | bfd *abfd; |
| 2240 | PTR ext1 ATTRIBUTE_UNUSED; |
| 2241 | PTR in1; |
| 2242 | { |
| 2243 | struct internal_syment *in = (struct internal_syment *)in1; |
| 2244 | |
| 2245 | if (bfd_of_toc_owner != 0) /* we already have a toc, so go home */ |
| 2246 | return; |
| 2247 | |
| 2248 | if (strcmp(in->_n._n_name, ".toc") == 0) |
| 2249 | { |
| 2250 | flagword flags; |
| 2251 | register asection *s; |
| 2252 | |
| 2253 | s = bfd_get_section_by_name ( abfd , TOC_SECTION_NAME); |
| 2254 | if (s != NULL) |
| 2255 | { |
| 2256 | return; |
| 2257 | } |
| 2258 | |
| 2259 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY ; |
| 2260 | |
| 2261 | s = bfd_make_section (abfd, TOC_SECTION_NAME); |
| 2262 | |
| 2263 | if (s == NULL |
| 2264 | || !bfd_set_section_flags (abfd, s, flags) |
| 2265 | || !bfd_set_section_alignment (abfd, s, 2)) |
| 2266 | { |
| 2267 | /* FIXME: set appropriate bfd error */ |
| 2268 | abort (); |
| 2269 | } |
| 2270 | |
| 2271 | /* save the bfd for later allocation */ |
| 2272 | bfd_of_toc_owner = abfd; |
| 2273 | } |
| 2274 | |
| 2275 | return; |
| 2276 | } |
| 2277 | #endif |
| 2278 | |
| 2279 | #ifndef COFF_IMAGE_WITH_PE |
| 2280 | |
| 2281 | static boolean ppc_do_last PARAMS ((bfd *)); |
| 2282 | static bfd *ppc_get_last PARAMS ((void)); |
| 2283 | |
| 2284 | static boolean |
| 2285 | ppc_do_last (abfd) |
| 2286 | bfd *abfd; |
| 2287 | { |
| 2288 | if (abfd == bfd_of_toc_owner) |
| 2289 | return true; |
| 2290 | else |
| 2291 | return false; |
| 2292 | } |
| 2293 | |
| 2294 | static bfd * |
| 2295 | ppc_get_last() |
| 2296 | { |
| 2297 | return bfd_of_toc_owner; |
| 2298 | } |
| 2299 | |
| 2300 | /* this piece of machinery exists only to guarantee that the bfd that holds |
| 2301 | the toc section is written last. |
| 2302 | |
| 2303 | This does depend on bfd_make_section attaching a new section to the |
| 2304 | end of the section list for the bfd. |
| 2305 | |
| 2306 | This is otherwise intended to be functionally the same as |
| 2307 | cofflink.c:_bfd_coff_final_link(). It is specifically different only |
| 2308 | where the POWERPC_LE_PE macro modifies the code. It is left in as a |
| 2309 | precise form of comment. krk@cygnus.com |
| 2310 | */ |
| 2311 | |
| 2312 | /* Do the final link step. */ |
| 2313 | |
| 2314 | boolean |
| 2315 | ppc_bfd_coff_final_link (abfd, info) |
| 2316 | bfd *abfd; |
| 2317 | struct bfd_link_info *info; |
| 2318 | { |
| 2319 | bfd_size_type symesz; |
| 2320 | struct coff_final_link_info finfo; |
| 2321 | boolean debug_merge_allocated; |
| 2322 | asection *o; |
| 2323 | struct bfd_link_order *p; |
| 2324 | size_t max_sym_count; |
| 2325 | size_t max_lineno_count; |
| 2326 | size_t max_reloc_count; |
| 2327 | size_t max_output_reloc_count; |
| 2328 | size_t max_contents_size; |
| 2329 | file_ptr rel_filepos; |
| 2330 | unsigned int relsz; |
| 2331 | file_ptr line_filepos; |
| 2332 | unsigned int linesz; |
| 2333 | bfd *sub; |
| 2334 | bfd_byte *external_relocs = NULL; |
| 2335 | char strbuf[STRING_SIZE_SIZE]; |
| 2336 | |
| 2337 | symesz = bfd_coff_symesz (abfd); |
| 2338 | |
| 2339 | finfo.info = info; |
| 2340 | finfo.output_bfd = abfd; |
| 2341 | finfo.strtab = NULL; |
| 2342 | finfo.section_info = NULL; |
| 2343 | finfo.last_file_index = -1; |
| 2344 | finfo.last_bf_index = -1; |
| 2345 | finfo.internal_syms = NULL; |
| 2346 | finfo.sec_ptrs = NULL; |
| 2347 | finfo.sym_indices = NULL; |
| 2348 | finfo.outsyms = NULL; |
| 2349 | finfo.linenos = NULL; |
| 2350 | finfo.contents = NULL; |
| 2351 | finfo.external_relocs = NULL; |
| 2352 | finfo.internal_relocs = NULL; |
| 2353 | debug_merge_allocated = false; |
| 2354 | |
| 2355 | coff_data (abfd)->link_info = info; |
| 2356 | |
| 2357 | finfo.strtab = _bfd_stringtab_init (); |
| 2358 | if (finfo.strtab == NULL) |
| 2359 | goto error_return; |
| 2360 | |
| 2361 | if (! coff_debug_merge_hash_table_init (&finfo.debug_merge)) |
| 2362 | goto error_return; |
| 2363 | debug_merge_allocated = true; |
| 2364 | |
| 2365 | /* Compute the file positions for all the sections. */ |
| 2366 | if (! abfd->output_has_begun) |
| 2367 | { |
| 2368 | if (! bfd_coff_compute_section_file_positions (abfd)) |
| 2369 | return false; |
| 2370 | } |
| 2371 | |
| 2372 | /* Count the line numbers and relocation entries required for the |
| 2373 | output file. Set the file positions for the relocs. */ |
| 2374 | rel_filepos = obj_relocbase (abfd); |
| 2375 | relsz = bfd_coff_relsz (abfd); |
| 2376 | max_contents_size = 0; |
| 2377 | max_lineno_count = 0; |
| 2378 | max_reloc_count = 0; |
| 2379 | |
| 2380 | for (o = abfd->sections; o != NULL; o = o->next) |
| 2381 | { |
| 2382 | o->reloc_count = 0; |
| 2383 | o->lineno_count = 0; |
| 2384 | for (p = o->link_order_head; p != NULL; p = p->next) |
| 2385 | { |
| 2386 | |
| 2387 | if (p->type == bfd_indirect_link_order) |
| 2388 | { |
| 2389 | asection *sec; |
| 2390 | |
| 2391 | sec = p->u.indirect.section; |
| 2392 | |
| 2393 | /* Mark all sections which are to be included in the |
| 2394 | link. This will normally be every section. We need |
| 2395 | to do this so that we can identify any sections which |
| 2396 | the linker has decided to not include. */ |
| 2397 | sec->linker_mark = true; |
| 2398 | |
| 2399 | if (info->strip == strip_none |
| 2400 | || info->strip == strip_some) |
| 2401 | o->lineno_count += sec->lineno_count; |
| 2402 | |
| 2403 | if (info->relocateable) |
| 2404 | o->reloc_count += sec->reloc_count; |
| 2405 | |
| 2406 | if (sec->_raw_size > max_contents_size) |
| 2407 | max_contents_size = sec->_raw_size; |
| 2408 | if (sec->lineno_count > max_lineno_count) |
| 2409 | max_lineno_count = sec->lineno_count; |
| 2410 | if (sec->reloc_count > max_reloc_count) |
| 2411 | max_reloc_count = sec->reloc_count; |
| 2412 | } |
| 2413 | else if (info->relocateable |
| 2414 | && (p->type == bfd_section_reloc_link_order |
| 2415 | || p->type == bfd_symbol_reloc_link_order)) |
| 2416 | ++o->reloc_count; |
| 2417 | } |
| 2418 | if (o->reloc_count == 0) |
| 2419 | o->rel_filepos = 0; |
| 2420 | else |
| 2421 | { |
| 2422 | o->flags |= SEC_RELOC; |
| 2423 | o->rel_filepos = rel_filepos; |
| 2424 | rel_filepos += o->reloc_count * relsz; |
| 2425 | } |
| 2426 | } |
| 2427 | |
| 2428 | /* If doing a relocateable link, allocate space for the pointers we |
| 2429 | need to keep. */ |
| 2430 | if (info->relocateable) |
| 2431 | { |
| 2432 | unsigned int i; |
| 2433 | |
| 2434 | /* We use section_count + 1, rather than section_count, because |
| 2435 | the target_index fields are 1 based. */ |
| 2436 | finfo.section_info = |
| 2437 | ((struct coff_link_section_info *) |
| 2438 | bfd_malloc ((abfd->section_count + 1) |
| 2439 | * sizeof (struct coff_link_section_info))); |
| 2440 | if (finfo.section_info == NULL) |
| 2441 | goto error_return; |
| 2442 | for (i = 0; i <= abfd->section_count; i++) |
| 2443 | { |
| 2444 | finfo.section_info[i].relocs = NULL; |
| 2445 | finfo.section_info[i].rel_hashes = NULL; |
| 2446 | } |
| 2447 | } |
| 2448 | |
| 2449 | /* We now know the size of the relocs, so we can determine the file |
| 2450 | positions of the line numbers. */ |
| 2451 | line_filepos = rel_filepos; |
| 2452 | linesz = bfd_coff_linesz (abfd); |
| 2453 | max_output_reloc_count = 0; |
| 2454 | for (o = abfd->sections; o != NULL; o = o->next) |
| 2455 | { |
| 2456 | if (o->lineno_count == 0) |
| 2457 | o->line_filepos = 0; |
| 2458 | else |
| 2459 | { |
| 2460 | o->line_filepos = line_filepos; |
| 2461 | line_filepos += o->lineno_count * linesz; |
| 2462 | } |
| 2463 | |
| 2464 | if (o->reloc_count != 0) |
| 2465 | { |
| 2466 | /* We don't know the indices of global symbols until we have |
| 2467 | written out all the local symbols. For each section in |
| 2468 | the output file, we keep an array of pointers to hash |
| 2469 | table entries. Each entry in the array corresponds to a |
| 2470 | reloc. When we find a reloc against a global symbol, we |
| 2471 | set the corresponding entry in this array so that we can |
| 2472 | fix up the symbol index after we have written out all the |
| 2473 | local symbols. |
| 2474 | |
| 2475 | Because of this problem, we also keep the relocs in |
| 2476 | memory until the end of the link. This wastes memory, |
| 2477 | but only when doing a relocateable link, which is not the |
| 2478 | common case. */ |
| 2479 | BFD_ASSERT (info->relocateable); |
| 2480 | finfo.section_info[o->target_index].relocs = |
| 2481 | ((struct internal_reloc *) |
| 2482 | bfd_malloc (o->reloc_count * sizeof (struct internal_reloc))); |
| 2483 | finfo.section_info[o->target_index].rel_hashes = |
| 2484 | ((struct coff_link_hash_entry **) |
| 2485 | bfd_malloc (o->reloc_count |
| 2486 | * sizeof (struct coff_link_hash_entry *))); |
| 2487 | if (finfo.section_info[o->target_index].relocs == NULL |
| 2488 | || finfo.section_info[o->target_index].rel_hashes == NULL) |
| 2489 | goto error_return; |
| 2490 | |
| 2491 | if (o->reloc_count > max_output_reloc_count) |
| 2492 | max_output_reloc_count = o->reloc_count; |
| 2493 | } |
| 2494 | |
| 2495 | /* Reset the reloc and lineno counts, so that we can use them to |
| 2496 | count the number of entries we have output so far. */ |
| 2497 | o->reloc_count = 0; |
| 2498 | o->lineno_count = 0; |
| 2499 | } |
| 2500 | |
| 2501 | obj_sym_filepos (abfd) = line_filepos; |
| 2502 | |
| 2503 | /* Figure out the largest number of symbols in an input BFD. Take |
| 2504 | the opportunity to clear the output_has_begun fields of all the |
| 2505 | input BFD's. */ |
| 2506 | max_sym_count = 0; |
| 2507 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) |
| 2508 | { |
| 2509 | size_t sz; |
| 2510 | |
| 2511 | sub->output_has_begun = false; |
| 2512 | sz = obj_raw_syment_count (sub); |
| 2513 | if (sz > max_sym_count) |
| 2514 | max_sym_count = sz; |
| 2515 | } |
| 2516 | |
| 2517 | /* Allocate some buffers used while linking. */ |
| 2518 | finfo.internal_syms = ((struct internal_syment *) |
| 2519 | bfd_malloc (max_sym_count |
| 2520 | * sizeof (struct internal_syment))); |
| 2521 | finfo.sec_ptrs = (asection **) bfd_malloc (max_sym_count |
| 2522 | * sizeof (asection *)); |
| 2523 | finfo.sym_indices = (long *) bfd_malloc (max_sym_count * sizeof (long)); |
| 2524 | finfo.outsyms = ((bfd_byte *) |
| 2525 | bfd_malloc ((size_t) ((max_sym_count + 1) * symesz))); |
| 2526 | finfo.linenos = (bfd_byte *) bfd_malloc (max_lineno_count |
| 2527 | * bfd_coff_linesz (abfd)); |
| 2528 | finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
| 2529 | finfo.external_relocs = (bfd_byte *) bfd_malloc (max_reloc_count * relsz); |
| 2530 | if (! info->relocateable) |
| 2531 | finfo.internal_relocs = ((struct internal_reloc *) |
| 2532 | bfd_malloc (max_reloc_count |
| 2533 | * sizeof (struct internal_reloc))); |
| 2534 | if ((finfo.internal_syms == NULL && max_sym_count > 0) |
| 2535 | || (finfo.sec_ptrs == NULL && max_sym_count > 0) |
| 2536 | || (finfo.sym_indices == NULL && max_sym_count > 0) |
| 2537 | || finfo.outsyms == NULL |
| 2538 | || (finfo.linenos == NULL && max_lineno_count > 0) |
| 2539 | || (finfo.contents == NULL && max_contents_size > 0) |
| 2540 | || (finfo.external_relocs == NULL && max_reloc_count > 0) |
| 2541 | || (! info->relocateable |
| 2542 | && finfo.internal_relocs == NULL |
| 2543 | && max_reloc_count > 0)) |
| 2544 | goto error_return; |
| 2545 | |
| 2546 | /* We now know the position of everything in the file, except that |
| 2547 | we don't know the size of the symbol table and therefore we don't |
| 2548 | know where the string table starts. We just build the string |
| 2549 | table in memory as we go along. We process all the relocations |
| 2550 | for a single input file at once. */ |
| 2551 | obj_raw_syment_count (abfd) = 0; |
| 2552 | |
| 2553 | if (coff_backend_info (abfd)->_bfd_coff_start_final_link) |
| 2554 | { |
| 2555 | if (! bfd_coff_start_final_link (abfd, info)) |
| 2556 | goto error_return; |
| 2557 | } |
| 2558 | |
| 2559 | for (o = abfd->sections; o != NULL; o = o->next) |
| 2560 | { |
| 2561 | for (p = o->link_order_head; p != NULL; p = p->next) |
| 2562 | { |
| 2563 | if (p->type == bfd_indirect_link_order |
| 2564 | && (bfd_get_flavour (p->u.indirect.section->owner) |
| 2565 | == bfd_target_coff_flavour)) |
| 2566 | { |
| 2567 | sub = p->u.indirect.section->owner; |
| 2568 | #ifdef POWERPC_LE_PE |
| 2569 | if (! sub->output_has_begun && !ppc_do_last(sub)) |
| 2570 | #else |
| 2571 | if (! sub->output_has_begun) |
| 2572 | #endif |
| 2573 | { |
| 2574 | if (! _bfd_coff_link_input_bfd (&finfo, sub)) |
| 2575 | goto error_return; |
| 2576 | sub->output_has_begun = true; |
| 2577 | } |
| 2578 | } |
| 2579 | else if (p->type == bfd_section_reloc_link_order |
| 2580 | || p->type == bfd_symbol_reloc_link_order) |
| 2581 | { |
| 2582 | if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p)) |
| 2583 | goto error_return; |
| 2584 | } |
| 2585 | else |
| 2586 | { |
| 2587 | if (! _bfd_default_link_order (abfd, info, o, p)) |
| 2588 | goto error_return; |
| 2589 | } |
| 2590 | } |
| 2591 | } |
| 2592 | |
| 2593 | #ifdef POWERPC_LE_PE |
| 2594 | { |
| 2595 | bfd* last_one = ppc_get_last(); |
| 2596 | if (last_one) |
| 2597 | { |
| 2598 | if (! _bfd_coff_link_input_bfd (&finfo, last_one)) |
| 2599 | goto error_return; |
| 2600 | } |
| 2601 | last_one->output_has_begun = true; |
| 2602 | } |
| 2603 | #endif |
| 2604 | |
| 2605 | /* Free up the buffers used by _bfd_coff_link_input_bfd. */ |
| 2606 | |
| 2607 | coff_debug_merge_hash_table_free (&finfo.debug_merge); |
| 2608 | debug_merge_allocated = false; |
| 2609 | |
| 2610 | if (finfo.internal_syms != NULL) |
| 2611 | { |
| 2612 | free (finfo.internal_syms); |
| 2613 | finfo.internal_syms = NULL; |
| 2614 | } |
| 2615 | if (finfo.sec_ptrs != NULL) |
| 2616 | { |
| 2617 | free (finfo.sec_ptrs); |
| 2618 | finfo.sec_ptrs = NULL; |
| 2619 | } |
| 2620 | if (finfo.sym_indices != NULL) |
| 2621 | { |
| 2622 | free (finfo.sym_indices); |
| 2623 | finfo.sym_indices = NULL; |
| 2624 | } |
| 2625 | if (finfo.linenos != NULL) |
| 2626 | { |
| 2627 | free (finfo.linenos); |
| 2628 | finfo.linenos = NULL; |
| 2629 | } |
| 2630 | if (finfo.contents != NULL) |
| 2631 | { |
| 2632 | free (finfo.contents); |
| 2633 | finfo.contents = NULL; |
| 2634 | } |
| 2635 | if (finfo.external_relocs != NULL) |
| 2636 | { |
| 2637 | free (finfo.external_relocs); |
| 2638 | finfo.external_relocs = NULL; |
| 2639 | } |
| 2640 | if (finfo.internal_relocs != NULL) |
| 2641 | { |
| 2642 | free (finfo.internal_relocs); |
| 2643 | finfo.internal_relocs = NULL; |
| 2644 | } |
| 2645 | |
| 2646 | /* The value of the last C_FILE symbol is supposed to be the symbol |
| 2647 | index of the first external symbol. Write it out again if |
| 2648 | necessary. */ |
| 2649 | if (finfo.last_file_index != -1 |
| 2650 | && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd)) |
| 2651 | { |
| 2652 | finfo.last_file.n_value = obj_raw_syment_count (abfd); |
| 2653 | bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file, |
| 2654 | (PTR) finfo.outsyms); |
| 2655 | if (bfd_seek (abfd, |
| 2656 | (obj_sym_filepos (abfd) |
| 2657 | + finfo.last_file_index * symesz), |
| 2658 | SEEK_SET) != 0 |
| 2659 | || bfd_write (finfo.outsyms, symesz, 1, abfd) != symesz) |
| 2660 | return false; |
| 2661 | } |
| 2662 | |
| 2663 | /* Write out the global symbols. */ |
| 2664 | finfo.failed = false; |
| 2665 | coff_link_hash_traverse (coff_hash_table (info), _bfd_coff_write_global_sym, |
| 2666 | (PTR) &finfo); |
| 2667 | if (finfo.failed) |
| 2668 | goto error_return; |
| 2669 | |
| 2670 | /* The outsyms buffer is used by _bfd_coff_write_global_sym. */ |
| 2671 | if (finfo.outsyms != NULL) |
| 2672 | { |
| 2673 | free (finfo.outsyms); |
| 2674 | finfo.outsyms = NULL; |
| 2675 | } |
| 2676 | |
| 2677 | if (info->relocateable) |
| 2678 | { |
| 2679 | /* Now that we have written out all the global symbols, we know |
| 2680 | the symbol indices to use for relocs against them, and we can |
| 2681 | finally write out the relocs. */ |
| 2682 | external_relocs = ((bfd_byte *) |
| 2683 | bfd_malloc (max_output_reloc_count * relsz)); |
| 2684 | if (external_relocs == NULL) |
| 2685 | goto error_return; |
| 2686 | |
| 2687 | for (o = abfd->sections; o != NULL; o = o->next) |
| 2688 | { |
| 2689 | struct internal_reloc *irel; |
| 2690 | struct internal_reloc *irelend; |
| 2691 | struct coff_link_hash_entry **rel_hash; |
| 2692 | bfd_byte *erel; |
| 2693 | |
| 2694 | if (o->reloc_count == 0) |
| 2695 | continue; |
| 2696 | |
| 2697 | irel = finfo.section_info[o->target_index].relocs; |
| 2698 | irelend = irel + o->reloc_count; |
| 2699 | rel_hash = finfo.section_info[o->target_index].rel_hashes; |
| 2700 | erel = external_relocs; |
| 2701 | for (; irel < irelend; irel++, rel_hash++, erel += relsz) |
| 2702 | { |
| 2703 | if (*rel_hash != NULL) |
| 2704 | { |
| 2705 | BFD_ASSERT ((*rel_hash)->indx >= 0); |
| 2706 | irel->r_symndx = (*rel_hash)->indx; |
| 2707 | } |
| 2708 | bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel); |
| 2709 | } |
| 2710 | |
| 2711 | if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 |
| 2712 | || bfd_write ((PTR) external_relocs, relsz, o->reloc_count, |
| 2713 | abfd) != relsz * o->reloc_count) |
| 2714 | goto error_return; |
| 2715 | } |
| 2716 | |
| 2717 | free (external_relocs); |
| 2718 | external_relocs = NULL; |
| 2719 | } |
| 2720 | |
| 2721 | /* Free up the section information. */ |
| 2722 | if (finfo.section_info != NULL) |
| 2723 | { |
| 2724 | unsigned int i; |
| 2725 | |
| 2726 | for (i = 0; i < abfd->section_count; i++) |
| 2727 | { |
| 2728 | if (finfo.section_info[i].relocs != NULL) |
| 2729 | free (finfo.section_info[i].relocs); |
| 2730 | if (finfo.section_info[i].rel_hashes != NULL) |
| 2731 | free (finfo.section_info[i].rel_hashes); |
| 2732 | } |
| 2733 | free (finfo.section_info); |
| 2734 | finfo.section_info = NULL; |
| 2735 | } |
| 2736 | |
| 2737 | /* If we have optimized stabs strings, output them. */ |
| 2738 | if (coff_hash_table (info)->stab_info != NULL) |
| 2739 | { |
| 2740 | if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info)) |
| 2741 | return false; |
| 2742 | } |
| 2743 | |
| 2744 | /* Write out the string table. */ |
| 2745 | if (obj_raw_syment_count (abfd) != 0) |
| 2746 | { |
| 2747 | if (bfd_seek (abfd, |
| 2748 | (obj_sym_filepos (abfd) |
| 2749 | + obj_raw_syment_count (abfd) * symesz), |
| 2750 | SEEK_SET) != 0) |
| 2751 | return false; |
| 2752 | |
| 2753 | #if STRING_SIZE_SIZE == 4 |
| 2754 | bfd_h_put_32 (abfd, |
| 2755 | _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, |
| 2756 | (bfd_byte *) strbuf); |
| 2757 | #else |
| 2758 | #error Change bfd_h_put_32 |
| 2759 | #endif |
| 2760 | |
| 2761 | if (bfd_write (strbuf, 1, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE) |
| 2762 | return false; |
| 2763 | |
| 2764 | if (! _bfd_stringtab_emit (abfd, finfo.strtab)) |
| 2765 | return false; |
| 2766 | } |
| 2767 | |
| 2768 | _bfd_stringtab_free (finfo.strtab); |
| 2769 | |
| 2770 | /* Setting bfd_get_symcount to 0 will cause write_object_contents to |
| 2771 | not try to write out the symbols. */ |
| 2772 | bfd_get_symcount (abfd) = 0; |
| 2773 | |
| 2774 | return true; |
| 2775 | |
| 2776 | error_return: |
| 2777 | if (debug_merge_allocated) |
| 2778 | coff_debug_merge_hash_table_free (&finfo.debug_merge); |
| 2779 | if (finfo.strtab != NULL) |
| 2780 | _bfd_stringtab_free (finfo.strtab); |
| 2781 | if (finfo.section_info != NULL) |
| 2782 | { |
| 2783 | unsigned int i; |
| 2784 | |
| 2785 | for (i = 0; i < abfd->section_count; i++) |
| 2786 | { |
| 2787 | if (finfo.section_info[i].relocs != NULL) |
| 2788 | free (finfo.section_info[i].relocs); |
| 2789 | if (finfo.section_info[i].rel_hashes != NULL) |
| 2790 | free (finfo.section_info[i].rel_hashes); |
| 2791 | } |
| 2792 | free (finfo.section_info); |
| 2793 | } |
| 2794 | if (finfo.internal_syms != NULL) |
| 2795 | free (finfo.internal_syms); |
| 2796 | if (finfo.sec_ptrs != NULL) |
| 2797 | free (finfo.sec_ptrs); |
| 2798 | if (finfo.sym_indices != NULL) |
| 2799 | free (finfo.sym_indices); |
| 2800 | if (finfo.outsyms != NULL) |
| 2801 | free (finfo.outsyms); |
| 2802 | if (finfo.linenos != NULL) |
| 2803 | free (finfo.linenos); |
| 2804 | if (finfo.contents != NULL) |
| 2805 | free (finfo.contents); |
| 2806 | if (finfo.external_relocs != NULL) |
| 2807 | free (finfo.external_relocs); |
| 2808 | if (finfo.internal_relocs != NULL) |
| 2809 | free (finfo.internal_relocs); |
| 2810 | if (external_relocs != NULL) |
| 2811 | free (external_relocs); |
| 2812 | return false; |
| 2813 | } |
| 2814 | #endif |
| 2815 | \f |
| 2816 | /* Forward declaration for use by alternative_target field. */ |
| 2817 | #ifdef TARGET_BIG_SYM |
| 2818 | extern const bfd_target TARGET_BIG_SYM; |
| 2819 | #endif |
| 2820 | |
| 2821 | /* The transfer vectors that lead the outside world to all of the above. */ |
| 2822 | |
| 2823 | #ifdef TARGET_LITTLE_SYM |
| 2824 | const bfd_target TARGET_LITTLE_SYM = |
| 2825 | { |
| 2826 | TARGET_LITTLE_NAME, /* name or coff-arm-little */ |
| 2827 | bfd_target_coff_flavour, |
| 2828 | BFD_ENDIAN_LITTLE, /* data byte order is little */ |
| 2829 | BFD_ENDIAN_LITTLE, /* header byte order is little */ |
| 2830 | |
| 2831 | (HAS_RELOC | EXEC_P | /* FIXME: object flags */ |
| 2832 | HAS_LINENO | HAS_DEBUG | |
| 2833 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 2834 | |
| 2835 | #ifndef COFF_WITH_PE |
| 2836 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 2837 | #else |
| 2838 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */ |
| 2839 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), |
| 2840 | #endif |
| 2841 | |
| 2842 | 0, /* leading char */ |
| 2843 | '/', /* ar_pad_char */ |
| 2844 | 15, /* ar_max_namelen??? FIXMEmgo */ |
| 2845 | |
| 2846 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 2847 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 2848 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ |
| 2849 | |
| 2850 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 2851 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 2852 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ |
| 2853 | |
| 2854 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ |
| 2855 | bfd_generic_archive_p, /* _bfd_dummy_target */ coff_object_p }, |
| 2856 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ |
| 2857 | bfd_false}, |
| 2858 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ |
| 2859 | _bfd_write_archive_contents, bfd_false}, |
| 2860 | |
| 2861 | BFD_JUMP_TABLE_GENERIC (coff), |
| 2862 | BFD_JUMP_TABLE_COPY (coff), |
| 2863 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 2864 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
| 2865 | BFD_JUMP_TABLE_SYMBOLS (coff), |
| 2866 | BFD_JUMP_TABLE_RELOCS (coff), |
| 2867 | BFD_JUMP_TABLE_WRITE (coff), |
| 2868 | BFD_JUMP_TABLE_LINK (coff), |
| 2869 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 2870 | |
| 2871 | /* Alternative_target. */ |
| 2872 | #ifdef TARGET_BIG_SYM |
| 2873 | & TARGET_BIG_SYM, |
| 2874 | #else |
| 2875 | NULL, |
| 2876 | #endif |
| 2877 | |
| 2878 | COFF_SWAP_TABLE |
| 2879 | }; |
| 2880 | #endif |
| 2881 | |
| 2882 | #ifdef TARGET_BIG_SYM |
| 2883 | const bfd_target TARGET_BIG_SYM = |
| 2884 | { |
| 2885 | TARGET_BIG_NAME, |
| 2886 | bfd_target_coff_flavour, |
| 2887 | BFD_ENDIAN_BIG, /* data byte order is big */ |
| 2888 | BFD_ENDIAN_BIG, /* header byte order is big */ |
| 2889 | |
| 2890 | (HAS_RELOC | EXEC_P | /* FIXME: object flags */ |
| 2891 | HAS_LINENO | HAS_DEBUG | |
| 2892 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 2893 | |
| 2894 | #ifndef COFF_WITH_PE |
| 2895 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 2896 | #else |
| 2897 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */ |
| 2898 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), |
| 2899 | #endif |
| 2900 | |
| 2901 | 0, /* leading char */ |
| 2902 | '/', /* ar_pad_char */ |
| 2903 | 15, /* ar_max_namelen??? FIXMEmgo */ |
| 2904 | |
| 2905 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 2906 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 2907 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ |
| 2908 | |
| 2909 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 2910 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 2911 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ |
| 2912 | |
| 2913 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ |
| 2914 | bfd_generic_archive_p, /* _bfd_dummy_target */ coff_object_p }, |
| 2915 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ |
| 2916 | bfd_false}, |
| 2917 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ |
| 2918 | _bfd_write_archive_contents, bfd_false}, |
| 2919 | |
| 2920 | BFD_JUMP_TABLE_GENERIC (coff), |
| 2921 | BFD_JUMP_TABLE_COPY (coff), |
| 2922 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 2923 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
| 2924 | BFD_JUMP_TABLE_SYMBOLS (coff), |
| 2925 | BFD_JUMP_TABLE_RELOCS (coff), |
| 2926 | BFD_JUMP_TABLE_WRITE (coff), |
| 2927 | BFD_JUMP_TABLE_LINK (coff), |
| 2928 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 2929 | |
| 2930 | /* Alternative_target. */ |
| 2931 | #ifdef TARGET_LITTLE_SYM |
| 2932 | & TARGET_LITTLE_SYM, |
| 2933 | #else |
| 2934 | NULL, |
| 2935 | #endif |
| 2936 | |
| 2937 | COFF_SWAP_TABLE |
| 2938 | }; |
| 2939 | |
| 2940 | #endif |