| 1 | /* Support for the generic parts of most COFF variants, for BFD. |
| 2 | Copyright 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc. |
| 3 | Written by Cygnus Support. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | /* |
| 22 | Most of this hacked by Steve Chamberlain, |
| 23 | sac@cygnus.com |
| 24 | */ |
| 25 | /* |
| 26 | |
| 27 | SECTION |
| 28 | coff backends |
| 29 | |
| 30 | BFD supports a number of different flavours of coff format. |
| 31 | The major differences between formats are the sizes and |
| 32 | alignments of fields in structures on disk, and the occasional |
| 33 | extra field. |
| 34 | |
| 35 | Coff in all its varieties is implemented with a few common |
| 36 | files and a number of implementation specific files. For |
| 37 | example, The 88k bcs coff format is implemented in the file |
| 38 | @file{coff-m88k.c}. This file @code{#include}s |
| 39 | @file{coff/m88k.h} which defines the external structure of the |
| 40 | coff format for the 88k, and @file{coff/internal.h} which |
| 41 | defines the internal structure. @file{coff-m88k.c} also |
| 42 | defines the relocations used by the 88k format |
| 43 | @xref{Relocations}. |
| 44 | |
| 45 | The Intel i960 processor version of coff is implemented in |
| 46 | @file{coff-i960.c}. This file has the same structure as |
| 47 | @file{coff-m88k.c}, except that it includes @file{coff/i960.h} |
| 48 | rather than @file{coff-m88k.h}. |
| 49 | |
| 50 | SUBSECTION |
| 51 | Porting to a new version of coff |
| 52 | |
| 53 | The recommended method is to select from the existing |
| 54 | implementations the version of coff which is most like the one |
| 55 | you want to use. For example, we'll say that i386 coff is |
| 56 | the one you select, and that your coff flavour is called foo. |
| 57 | Copy @file{i386coff.c} to @file{foocoff.c}, copy |
| 58 | @file{../include/coff/i386.h} to @file{../include/coff/foo.h}, |
| 59 | and add the lines to @file{targets.c} and @file{Makefile.in} |
| 60 | so that your new back end is used. Alter the shapes of the |
| 61 | structures in @file{../include/coff/foo.h} so that they match |
| 62 | what you need. You will probably also have to add |
| 63 | @code{#ifdef}s to the code in @file{coff/internal.h} and |
| 64 | @file{coffcode.h} if your version of coff is too wild. |
| 65 | |
| 66 | You can verify that your new BFD backend works quite simply by |
| 67 | building @file{objdump} from the @file{binutils} directory, |
| 68 | and making sure that its version of what's going on and your |
| 69 | host system's idea (assuming it has the pretty standard coff |
| 70 | dump utility, usually called @code{att-dump} or just |
| 71 | @code{dump}) are the same. Then clean up your code, and send |
| 72 | what you've done to Cygnus. Then your stuff will be in the |
| 73 | next release, and you won't have to keep integrating it. |
| 74 | |
| 75 | SUBSECTION |
| 76 | How the coff backend works |
| 77 | |
| 78 | SUBSUBSECTION |
| 79 | File layout |
| 80 | |
| 81 | The Coff backend is split into generic routines that are |
| 82 | applicable to any Coff target and routines that are specific |
| 83 | to a particular target. The target-specific routines are |
| 84 | further split into ones which are basically the same for all |
| 85 | Coff targets except that they use the external symbol format |
| 86 | or use different values for certain constants. |
| 87 | |
| 88 | The generic routines are in @file{coffgen.c}. These routines |
| 89 | work for any Coff target. They use some hooks into the target |
| 90 | specific code; the hooks are in a @code{bfd_coff_backend_data} |
| 91 | structure, one of which exists for each target. |
| 92 | |
| 93 | The essentially similar target-specific routines are in |
| 94 | @file{coffcode.h}. This header file includes executable C code. |
| 95 | The various Coff targets first include the appropriate Coff |
| 96 | header file, make any special defines that are needed, and |
| 97 | then include @file{coffcode.h}. |
| 98 | |
| 99 | Some of the Coff targets then also have additional routines in |
| 100 | the target source file itself. |
| 101 | |
| 102 | For example, @file{coff-i960.c} includes |
| 103 | @file{coff/internal.h} and @file{coff/i960.h}. It then |
| 104 | defines a few constants, such as @code{I960}, and includes |
| 105 | @file{coffcode.h}. Since the i960 has complex relocation |
| 106 | types, @file{coff-i960.c} also includes some code to |
| 107 | manipulate the i960 relocs. This code is not in |
| 108 | @file{coffcode.h} because it would not be used by any other |
| 109 | target. |
| 110 | |
| 111 | SUBSUBSECTION |
| 112 | Bit twiddling |
| 113 | |
| 114 | Each flavour of coff supported in BFD has its own header file |
| 115 | describing the external layout of the structures. There is also |
| 116 | an internal description of the coff layout, in |
| 117 | @file{coff/internal.h}. A major function of the |
| 118 | coff backend is swapping the bytes and twiddling the bits to |
| 119 | translate the external form of the structures into the normal |
| 120 | internal form. This is all performed in the |
| 121 | @code{bfd_swap}_@i{thing}_@i{direction} routines. Some |
| 122 | elements are different sizes between different versions of |
| 123 | coff; it is the duty of the coff version specific include file |
| 124 | to override the definitions of various packing routines in |
| 125 | @file{coffcode.h}. E.g., the size of line number entry in coff is |
| 126 | sometimes 16 bits, and sometimes 32 bits. @code{#define}ing |
| 127 | @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the |
| 128 | correct one. No doubt, some day someone will find a version of |
| 129 | coff which has a varying field size not catered to at the |
| 130 | moment. To port BFD, that person will have to add more @code{#defines}. |
| 131 | Three of the bit twiddling routines are exported to |
| 132 | @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in} |
| 133 | and @code{coff_swap_linno_in}. @code{GDB} reads the symbol |
| 134 | table on its own, but uses BFD to fix things up. More of the |
| 135 | bit twiddlers are exported for @code{gas}; |
| 136 | @code{coff_swap_aux_out}, @code{coff_swap_sym_out}, |
| 137 | @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out}, |
| 138 | @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out}, |
| 139 | @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track |
| 140 | of all the symbol table and reloc drudgery itself, thereby |
| 141 | saving the internal BFD overhead, but uses BFD to swap things |
| 142 | on the way out, making cross ports much safer. Doing so also |
| 143 | allows BFD (and thus the linker) to use the same header files |
| 144 | as @code{gas}, which makes one avenue to disaster disappear. |
| 145 | |
| 146 | SUBSUBSECTION |
| 147 | Symbol reading |
| 148 | |
| 149 | The simple canonical form for symbols used by BFD is not rich |
| 150 | enough to keep all the information available in a coff symbol |
| 151 | table. The back end gets around this problem by keeping the original |
| 152 | symbol table around, "behind the scenes". |
| 153 | |
| 154 | When a symbol table is requested (through a call to |
| 155 | @code{bfd_canonicalize_symtab}), a request gets through to |
| 156 | @code{coff_get_normalized_symtab}. This reads the symbol table from |
| 157 | the coff file and swaps all the structures inside into the |
| 158 | internal form. It also fixes up all the pointers in the table |
| 159 | (represented in the file by offsets from the first symbol in |
| 160 | the table) into physical pointers to elements in the new |
| 161 | internal table. This involves some work since the meanings of |
| 162 | fields change depending upon context: a field that is a |
| 163 | pointer to another structure in the symbol table at one moment |
| 164 | may be the size in bytes of a structure at the next. Another |
| 165 | pass is made over the table. All symbols which mark file names |
| 166 | (<<C_FILE>> symbols) are modified so that the internal |
| 167 | string points to the value in the auxent (the real filename) |
| 168 | rather than the normal text associated with the symbol |
| 169 | (@code{".file"}). |
| 170 | |
| 171 | At this time the symbol names are moved around. Coff stores |
| 172 | all symbols less than nine characters long physically |
| 173 | within the symbol table; longer strings are kept at the end of |
| 174 | the file in the string table. This pass moves all strings |
| 175 | into memory and replaces them with pointers to the strings. |
| 176 | |
| 177 | |
| 178 | The symbol table is massaged once again, this time to create |
| 179 | the canonical table used by the BFD application. Each symbol |
| 180 | is inspected in turn, and a decision made (using the |
| 181 | @code{sclass} field) about the various flags to set in the |
| 182 | @code{asymbol}. @xref{Symbols}. The generated canonical table |
| 183 | shares strings with the hidden internal symbol table. |
| 184 | |
| 185 | Any linenumbers are read from the coff file too, and attached |
| 186 | to the symbols which own the functions the linenumbers belong to. |
| 187 | |
| 188 | SUBSUBSECTION |
| 189 | Symbol writing |
| 190 | |
| 191 | Writing a symbol to a coff file which didn't come from a coff |
| 192 | file will lose any debugging information. The @code{asymbol} |
| 193 | structure remembers the BFD from which the symbol was taken, and on |
| 194 | output the back end makes sure that the same destination target as |
| 195 | source target is present. |
| 196 | |
| 197 | When the symbols have come from a coff file then all the |
| 198 | debugging information is preserved. |
| 199 | |
| 200 | Symbol tables are provided for writing to the back end in a |
| 201 | vector of pointers to pointers. This allows applications like |
| 202 | the linker to accumulate and output large symbol tables |
| 203 | without having to do too much byte copying. |
| 204 | |
| 205 | This function runs through the provided symbol table and |
| 206 | patches each symbol marked as a file place holder |
| 207 | (@code{C_FILE}) to point to the next file place holder in the |
| 208 | list. It also marks each @code{offset} field in the list with |
| 209 | the offset from the first symbol of the current symbol. |
| 210 | |
| 211 | Another function of this procedure is to turn the canonical |
| 212 | value form of BFD into the form used by coff. Internally, BFD |
| 213 | expects symbol values to be offsets from a section base; so a |
| 214 | symbol physically at 0x120, but in a section starting at |
| 215 | 0x100, would have the value 0x20. Coff expects symbols to |
| 216 | contain their final value, so symbols have their values |
| 217 | changed at this point to reflect their sum with their owning |
| 218 | section. This transformation uses the |
| 219 | <<output_section>> field of the @code{asymbol}'s |
| 220 | @code{asection} @xref{Sections}. |
| 221 | |
| 222 | o <<coff_mangle_symbols>> |
| 223 | |
| 224 | This routine runs though the provided symbol table and uses |
| 225 | the offsets generated by the previous pass and the pointers |
| 226 | generated when the symbol table was read in to create the |
| 227 | structured hierachy required by coff. It changes each pointer |
| 228 | to a symbol into the index into the symbol table of the asymbol. |
| 229 | |
| 230 | o <<coff_write_symbols>> |
| 231 | |
| 232 | This routine runs through the symbol table and patches up the |
| 233 | symbols from their internal form into the coff way, calls the |
| 234 | bit twiddlers, and writes out the table to the file. |
| 235 | |
| 236 | */ |
| 237 | |
| 238 | /* |
| 239 | INTERNAL_DEFINITION |
| 240 | coff_symbol_type |
| 241 | |
| 242 | DESCRIPTION |
| 243 | The hidden information for an <<asymbol>> is described in a |
| 244 | <<combined_entry_type>>: |
| 245 | |
| 246 | CODE_FRAGMENT |
| 247 | . |
| 248 | .typedef struct coff_ptr_struct |
| 249 | .{ |
| 250 | . |
| 251 | . {* Remembers the offset from the first symbol in the file for |
| 252 | . this symbol. Generated by coff_renumber_symbols. *} |
| 253 | .unsigned int offset; |
| 254 | . |
| 255 | . {* Should the value of this symbol be renumbered. Used for |
| 256 | . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *} |
| 257 | .unsigned int fix_value : 1; |
| 258 | . |
| 259 | . {* Should the tag field of this symbol be renumbered. |
| 260 | . Created by coff_pointerize_aux. *} |
| 261 | .unsigned int fix_tag : 1; |
| 262 | . |
| 263 | . {* Should the endidx field of this symbol be renumbered. |
| 264 | . Created by coff_pointerize_aux. *} |
| 265 | .unsigned int fix_end : 1; |
| 266 | . |
| 267 | . {* Should the x_csect.x_scnlen field be renumbered. |
| 268 | . Created by coff_pointerize_aux. *} |
| 269 | .unsigned int fix_scnlen : 1; |
| 270 | . |
| 271 | . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the |
| 272 | . index into the line number entries. Set by |
| 273 | . coff_slurp_symbol_table. *} |
| 274 | .unsigned int fix_line : 1; |
| 275 | . |
| 276 | . {* The container for the symbol structure as read and translated |
| 277 | . from the file. *} |
| 278 | . |
| 279 | .union { |
| 280 | . union internal_auxent auxent; |
| 281 | . struct internal_syment syment; |
| 282 | . } u; |
| 283 | .} combined_entry_type; |
| 284 | . |
| 285 | . |
| 286 | .{* Each canonical asymbol really looks like this: *} |
| 287 | . |
| 288 | .typedef struct coff_symbol_struct |
| 289 | .{ |
| 290 | . {* The actual symbol which the rest of BFD works with *} |
| 291 | .asymbol symbol; |
| 292 | . |
| 293 | . {* A pointer to the hidden information for this symbol *} |
| 294 | .combined_entry_type *native; |
| 295 | . |
| 296 | . {* A pointer to the linenumber information for this symbol *} |
| 297 | .struct lineno_cache_entry *lineno; |
| 298 | . |
| 299 | . {* Have the line numbers been relocated yet ? *} |
| 300 | .boolean done_lineno; |
| 301 | .} coff_symbol_type; |
| 302 | |
| 303 | |
| 304 | */ |
| 305 | |
| 306 | #ifdef COFF_WITH_PE |
| 307 | #include "peicode.h" |
| 308 | #else |
| 309 | #include "coffswap.h" |
| 310 | #endif |
| 311 | |
| 312 | \f |
| 313 | /* void warning(); */ |
| 314 | |
| 315 | /* |
| 316 | * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the |
| 317 | * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags(). |
| 318 | * NOTE: If you add to/change this routine, you should mirror the changes |
| 319 | * in styp_to_sec_flags(). |
| 320 | */ |
| 321 | static long |
| 322 | sec_to_styp_flags (sec_name, sec_flags) |
| 323 | CONST char *sec_name; |
| 324 | flagword sec_flags; |
| 325 | { |
| 326 | long styp_flags = 0; |
| 327 | |
| 328 | if (!strcmp (sec_name, _TEXT)) |
| 329 | { |
| 330 | styp_flags = STYP_TEXT; |
| 331 | } |
| 332 | else if (!strcmp (sec_name, _DATA)) |
| 333 | { |
| 334 | styp_flags = STYP_DATA; |
| 335 | } |
| 336 | else if (!strcmp (sec_name, _BSS)) |
| 337 | { |
| 338 | styp_flags = STYP_BSS; |
| 339 | #ifdef _COMMENT |
| 340 | } |
| 341 | else if (!strcmp (sec_name, _COMMENT)) |
| 342 | { |
| 343 | styp_flags = STYP_INFO; |
| 344 | #endif /* _COMMENT */ |
| 345 | #ifdef _LIB |
| 346 | } |
| 347 | else if (!strcmp (sec_name, _LIB)) |
| 348 | { |
| 349 | styp_flags = STYP_LIB; |
| 350 | #endif /* _LIB */ |
| 351 | #ifdef _LIT |
| 352 | } |
| 353 | else if (!strcmp (sec_name, _LIT)) |
| 354 | { |
| 355 | styp_flags = STYP_LIT; |
| 356 | #endif /* _LIT */ |
| 357 | } |
| 358 | else if (!strcmp (sec_name, ".debug")) |
| 359 | { |
| 360 | #ifdef STYP_DEBUG |
| 361 | styp_flags = STYP_DEBUG; |
| 362 | #else |
| 363 | styp_flags = STYP_INFO; |
| 364 | #endif |
| 365 | } |
| 366 | else if (!strncmp (sec_name, ".stab", 5)) |
| 367 | { |
| 368 | styp_flags = STYP_INFO; |
| 369 | } |
| 370 | #ifdef COFF_WITH_PE |
| 371 | else if (!strcmp (sec_name, ".edata")) |
| 372 | { |
| 373 | styp_flags = STYP_DATA; |
| 374 | } |
| 375 | #endif |
| 376 | #ifdef RS6000COFF_C |
| 377 | else if (!strcmp (sec_name, _PAD)) |
| 378 | { |
| 379 | styp_flags = STYP_PAD; |
| 380 | } |
| 381 | else if (!strcmp (sec_name, _LOADER)) |
| 382 | { |
| 383 | styp_flags = STYP_LOADER; |
| 384 | } |
| 385 | #endif |
| 386 | /* Try and figure out what it should be */ |
| 387 | else if (sec_flags & SEC_CODE) |
| 388 | { |
| 389 | styp_flags = STYP_TEXT; |
| 390 | } |
| 391 | else if (sec_flags & SEC_DATA) |
| 392 | { |
| 393 | styp_flags = STYP_DATA; |
| 394 | } |
| 395 | else if (sec_flags & SEC_READONLY) |
| 396 | { |
| 397 | #ifdef STYP_LIT /* 29k readonly text/data section */ |
| 398 | styp_flags = STYP_LIT; |
| 399 | #else |
| 400 | styp_flags = STYP_TEXT; |
| 401 | #endif /* STYP_LIT */ |
| 402 | } |
| 403 | else if (sec_flags & SEC_LOAD) |
| 404 | { |
| 405 | styp_flags = STYP_TEXT; |
| 406 | } |
| 407 | else if (sec_flags & SEC_ALLOC) |
| 408 | { |
| 409 | styp_flags = STYP_BSS; |
| 410 | } |
| 411 | |
| 412 | #ifdef STYP_NOLOAD |
| 413 | if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0) |
| 414 | styp_flags |= STYP_NOLOAD; |
| 415 | #endif |
| 416 | |
| 417 | return (styp_flags); |
| 418 | } |
| 419 | /* |
| 420 | * Return a word with SEC_* flags set to represent the incoming |
| 421 | * STYP_* flags (from scnhdr.s_flags). The inverse of this |
| 422 | * function is sec_to_styp_flags(). |
| 423 | * NOTE: If you add to/change this routine, you should mirror the changes |
| 424 | * in sec_to_styp_flags(). |
| 425 | */ |
| 426 | static flagword |
| 427 | styp_to_sec_flags (abfd, hdr, name) |
| 428 | bfd *abfd; |
| 429 | PTR hdr; |
| 430 | const char *name; |
| 431 | { |
| 432 | struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
| 433 | long styp_flags = internal_s->s_flags; |
| 434 | flagword sec_flags = 0; |
| 435 | |
| 436 | #ifdef STYP_NOLOAD |
| 437 | if (styp_flags & STYP_NOLOAD) |
| 438 | { |
| 439 | sec_flags |= SEC_NEVER_LOAD; |
| 440 | } |
| 441 | #endif /* STYP_NOLOAD */ |
| 442 | |
| 443 | /* For 386 COFF, at least, an unloadable text or data section is |
| 444 | actually a shared library section. */ |
| 445 | if (styp_flags & STYP_TEXT) |
| 446 | { |
| 447 | if (sec_flags & SEC_NEVER_LOAD) |
| 448 | sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; |
| 449 | else |
| 450 | sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; |
| 451 | } |
| 452 | else if (styp_flags & STYP_DATA) |
| 453 | { |
| 454 | if (sec_flags & SEC_NEVER_LOAD) |
| 455 | sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; |
| 456 | else |
| 457 | sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; |
| 458 | } |
| 459 | else if (styp_flags & STYP_BSS) |
| 460 | { |
| 461 | #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY |
| 462 | if (sec_flags & SEC_NEVER_LOAD) |
| 463 | sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY; |
| 464 | else |
| 465 | #endif |
| 466 | sec_flags |= SEC_ALLOC; |
| 467 | } |
| 468 | else if (styp_flags & STYP_INFO) |
| 469 | { |
| 470 | /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is |
| 471 | defined. coff_compute_section_file_positions uses |
| 472 | COFF_PAGE_SIZE to ensure that the low order bits of the |
| 473 | section VMA and the file offset match. If we don't know |
| 474 | COFF_PAGE_SIZE, we can't ensure the correct correspondence, |
| 475 | and demand page loading of the file will fail. */ |
| 476 | #ifdef COFF_PAGE_SIZE |
| 477 | sec_flags |= SEC_DEBUGGING; |
| 478 | #endif |
| 479 | } |
| 480 | else if (styp_flags & STYP_PAD) |
| 481 | { |
| 482 | sec_flags = 0; |
| 483 | } |
| 484 | else if (strcmp (name, _TEXT) == 0) |
| 485 | { |
| 486 | if (sec_flags & SEC_NEVER_LOAD) |
| 487 | sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; |
| 488 | else |
| 489 | sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; |
| 490 | } |
| 491 | else if (strcmp (name, _DATA) == 0) |
| 492 | { |
| 493 | if (sec_flags & SEC_NEVER_LOAD) |
| 494 | sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; |
| 495 | else |
| 496 | sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; |
| 497 | } |
| 498 | else if (strcmp (name, _BSS) == 0) |
| 499 | { |
| 500 | #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY |
| 501 | if (sec_flags & SEC_NEVER_LOAD) |
| 502 | sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY; |
| 503 | else |
| 504 | #endif |
| 505 | sec_flags |= SEC_ALLOC; |
| 506 | } |
| 507 | else if (strcmp (name, ".debug") == 0 |
| 508 | #ifdef _COMMENT |
| 509 | || strcmp (name, _COMMENT) == 0 |
| 510 | #endif |
| 511 | || strncmp (name, ".stab", 5) == 0) |
| 512 | { |
| 513 | #ifdef COFF_PAGE_SIZE |
| 514 | sec_flags |= SEC_DEBUGGING; |
| 515 | #endif |
| 516 | } |
| 517 | #ifdef _LIB |
| 518 | else if (strcmp (name, _LIB) == 0) |
| 519 | ; |
| 520 | #endif |
| 521 | #ifdef _LIT |
| 522 | else if (strcmp (name, _LIT) == 0) |
| 523 | { |
| 524 | sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY; |
| 525 | } |
| 526 | #endif |
| 527 | else |
| 528 | { |
| 529 | sec_flags |= SEC_ALLOC | SEC_LOAD; |
| 530 | } |
| 531 | |
| 532 | #ifdef STYP_LIT /* A29k readonly text/data section type */ |
| 533 | if ((styp_flags & STYP_LIT) == STYP_LIT) |
| 534 | { |
| 535 | sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY); |
| 536 | } |
| 537 | #endif /* STYP_LIT */ |
| 538 | #ifdef STYP_OTHER_LOAD /* Other loaded sections */ |
| 539 | if (styp_flags & STYP_OTHER_LOAD) |
| 540 | { |
| 541 | sec_flags = (SEC_LOAD | SEC_ALLOC); |
| 542 | } |
| 543 | #endif /* STYP_SDATA */ |
| 544 | |
| 545 | return (sec_flags); |
| 546 | } |
| 547 | |
| 548 | #define get_index(symbol) ((symbol)->udata.i) |
| 549 | |
| 550 | /* |
| 551 | INTERNAL_DEFINITION |
| 552 | bfd_coff_backend_data |
| 553 | |
| 554 | CODE_FRAGMENT |
| 555 | |
| 556 | Special entry points for gdb to swap in coff symbol table parts: |
| 557 | .typedef struct |
| 558 | .{ |
| 559 | . void (*_bfd_coff_swap_aux_in) PARAMS (( |
| 560 | . bfd *abfd, |
| 561 | . PTR ext, |
| 562 | . int type, |
| 563 | . int class, |
| 564 | . int indaux, |
| 565 | . int numaux, |
| 566 | . PTR in)); |
| 567 | . |
| 568 | . void (*_bfd_coff_swap_sym_in) PARAMS (( |
| 569 | . bfd *abfd , |
| 570 | . PTR ext, |
| 571 | . PTR in)); |
| 572 | . |
| 573 | . void (*_bfd_coff_swap_lineno_in) PARAMS (( |
| 574 | . bfd *abfd, |
| 575 | . PTR ext, |
| 576 | . PTR in)); |
| 577 | . |
| 578 | |
| 579 | Special entry points for gas to swap out coff parts: |
| 580 | |
| 581 | . unsigned int (*_bfd_coff_swap_aux_out) PARAMS (( |
| 582 | . bfd *abfd, |
| 583 | . PTR in, |
| 584 | . int type, |
| 585 | . int class, |
| 586 | . int indaux, |
| 587 | . int numaux, |
| 588 | . PTR ext)); |
| 589 | . |
| 590 | . unsigned int (*_bfd_coff_swap_sym_out) PARAMS (( |
| 591 | . bfd *abfd, |
| 592 | . PTR in, |
| 593 | . PTR ext)); |
| 594 | . |
| 595 | . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS (( |
| 596 | . bfd *abfd, |
| 597 | . PTR in, |
| 598 | . PTR ext)); |
| 599 | . |
| 600 | . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS (( |
| 601 | . bfd *abfd, |
| 602 | . PTR src, |
| 603 | . PTR dst)); |
| 604 | . |
| 605 | . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS (( |
| 606 | . bfd *abfd, |
| 607 | . PTR in, |
| 608 | . PTR out)); |
| 609 | . |
| 610 | . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS (( |
| 611 | . bfd *abfd, |
| 612 | . PTR in, |
| 613 | . PTR out)); |
| 614 | . |
| 615 | . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS (( |
| 616 | . bfd *abfd, |
| 617 | . PTR in, |
| 618 | . PTR out)); |
| 619 | . |
| 620 | |
| 621 | Special entry points for generic COFF routines to call target |
| 622 | dependent COFF routines: |
| 623 | |
| 624 | . unsigned int _bfd_filhsz; |
| 625 | . unsigned int _bfd_aoutsz; |
| 626 | . unsigned int _bfd_scnhsz; |
| 627 | . unsigned int _bfd_symesz; |
| 628 | . unsigned int _bfd_auxesz; |
| 629 | . unsigned int _bfd_relsz; |
| 630 | . unsigned int _bfd_linesz; |
| 631 | . boolean _bfd_coff_long_filenames; |
| 632 | . void (*_bfd_coff_swap_filehdr_in) PARAMS (( |
| 633 | . bfd *abfd, |
| 634 | . PTR ext, |
| 635 | . PTR in)); |
| 636 | . void (*_bfd_coff_swap_aouthdr_in) PARAMS (( |
| 637 | . bfd *abfd, |
| 638 | . PTR ext, |
| 639 | . PTR in)); |
| 640 | . void (*_bfd_coff_swap_scnhdr_in) PARAMS (( |
| 641 | . bfd *abfd, |
| 642 | . PTR ext, |
| 643 | . PTR in)); |
| 644 | . void (*_bfd_coff_swap_reloc_in) PARAMS (( |
| 645 | . bfd *abfd, |
| 646 | . PTR ext, |
| 647 | . PTR in)); |
| 648 | . boolean (*_bfd_coff_bad_format_hook) PARAMS (( |
| 649 | . bfd *abfd, |
| 650 | . PTR internal_filehdr)); |
| 651 | . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS (( |
| 652 | . bfd *abfd, |
| 653 | . PTR internal_filehdr)); |
| 654 | . PTR (*_bfd_coff_mkobject_hook) PARAMS (( |
| 655 | . bfd *abfd, |
| 656 | . PTR internal_filehdr, |
| 657 | . PTR internal_aouthdr)); |
| 658 | . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS (( |
| 659 | . bfd *abfd, |
| 660 | . PTR internal_scnhdr, |
| 661 | . const char *name)); |
| 662 | . void (*_bfd_set_alignment_hook) PARAMS (( |
| 663 | . bfd *abfd, |
| 664 | . asection *sec, |
| 665 | . PTR internal_scnhdr)); |
| 666 | . boolean (*_bfd_coff_slurp_symbol_table) PARAMS (( |
| 667 | . bfd *abfd)); |
| 668 | . boolean (*_bfd_coff_symname_in_debug) PARAMS (( |
| 669 | . bfd *abfd, |
| 670 | . struct internal_syment *sym)); |
| 671 | . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS (( |
| 672 | . bfd *abfd, |
| 673 | . combined_entry_type *table_base, |
| 674 | . combined_entry_type *symbol, |
| 675 | . unsigned int indaux, |
| 676 | . combined_entry_type *aux)); |
| 677 | . boolean (*_bfd_coff_print_aux) PARAMS (( |
| 678 | . bfd *abfd, |
| 679 | . FILE *file, |
| 680 | . combined_entry_type *table_base, |
| 681 | . combined_entry_type *symbol, |
| 682 | . combined_entry_type *aux, |
| 683 | . unsigned int indaux)); |
| 684 | . void (*_bfd_coff_reloc16_extra_cases) PARAMS (( |
| 685 | . bfd *abfd, |
| 686 | . struct bfd_link_info *link_info, |
| 687 | . struct bfd_link_order *link_order, |
| 688 | . arelent *reloc, |
| 689 | . bfd_byte *data, |
| 690 | . unsigned int *src_ptr, |
| 691 | . unsigned int *dst_ptr)); |
| 692 | . int (*_bfd_coff_reloc16_estimate) PARAMS (( |
| 693 | . bfd *abfd, |
| 694 | . asection *input_section, |
| 695 | . arelent *r, |
| 696 | . unsigned int shrink, |
| 697 | . struct bfd_link_info *link_info)); |
| 698 | . boolean (*_bfd_coff_sym_is_global) PARAMS (( |
| 699 | . bfd *abfd, |
| 700 | . struct internal_syment *)); |
| 701 | . void (*_bfd_coff_compute_section_file_positions) PARAMS (( |
| 702 | . bfd *abfd)); |
| 703 | . boolean (*_bfd_coff_start_final_link) PARAMS (( |
| 704 | . bfd *output_bfd, |
| 705 | . struct bfd_link_info *info)); |
| 706 | . boolean (*_bfd_coff_relocate_section) PARAMS (( |
| 707 | . bfd *output_bfd, |
| 708 | . struct bfd_link_info *info, |
| 709 | . bfd *input_bfd, |
| 710 | . asection *input_section, |
| 711 | . bfd_byte *contents, |
| 712 | . struct internal_reloc *relocs, |
| 713 | . struct internal_syment *syms, |
| 714 | . asection **sections)); |
| 715 | . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS (( |
| 716 | . bfd *abfd, |
| 717 | . asection *sec, |
| 718 | . struct internal_reloc *rel, |
| 719 | . struct coff_link_hash_entry *h, |
| 720 | . struct internal_syment *sym, |
| 721 | . bfd_vma *addendp)); |
| 722 | . boolean (*_bfd_coff_adjust_symndx) PARAMS (( |
| 723 | . bfd *obfd, |
| 724 | . struct bfd_link_info *info, |
| 725 | . bfd *ibfd, |
| 726 | . asection *sec, |
| 727 | . struct internal_reloc *reloc, |
| 728 | . boolean *adjustedp)); |
| 729 | . boolean (*_bfd_coff_link_add_one_symbol) PARAMS (( |
| 730 | . struct bfd_link_info *info, |
| 731 | . bfd *abfd, |
| 732 | . const char *name, |
| 733 | . flagword flags, |
| 734 | . asection *section, |
| 735 | . bfd_vma value, |
| 736 | . const char *string, |
| 737 | . boolean copy, |
| 738 | . boolean collect, |
| 739 | . struct bfd_link_hash_entry **hashp)); |
| 740 | . |
| 741 | .} bfd_coff_backend_data; |
| 742 | . |
| 743 | .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data) |
| 744 | . |
| 745 | .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \ |
| 746 | . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i)) |
| 747 | . |
| 748 | .#define bfd_coff_swap_sym_in(a,e,i) \ |
| 749 | . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i)) |
| 750 | . |
| 751 | .#define bfd_coff_swap_lineno_in(a,e,i) \ |
| 752 | . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i)) |
| 753 | . |
| 754 | .#define bfd_coff_swap_reloc_out(abfd, i, o) \ |
| 755 | . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o)) |
| 756 | . |
| 757 | .#define bfd_coff_swap_lineno_out(abfd, i, o) \ |
| 758 | . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o)) |
| 759 | . |
| 760 | .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \ |
| 761 | . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o)) |
| 762 | . |
| 763 | .#define bfd_coff_swap_sym_out(abfd, i,o) \ |
| 764 | . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o)) |
| 765 | . |
| 766 | .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \ |
| 767 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o)) |
| 768 | . |
| 769 | .#define bfd_coff_swap_filehdr_out(abfd, i,o) \ |
| 770 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o)) |
| 771 | . |
| 772 | .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \ |
| 773 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o)) |
| 774 | . |
| 775 | .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz) |
| 776 | .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz) |
| 777 | .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz) |
| 778 | .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz) |
| 779 | .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz) |
| 780 | .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz) |
| 781 | .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz) |
| 782 | .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames) |
| 783 | .#define bfd_coff_swap_filehdr_in(abfd, i,o) \ |
| 784 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o)) |
| 785 | . |
| 786 | .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \ |
| 787 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o)) |
| 788 | . |
| 789 | .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \ |
| 790 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o)) |
| 791 | . |
| 792 | .#define bfd_coff_swap_reloc_in(abfd, i, o) \ |
| 793 | . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o)) |
| 794 | . |
| 795 | .#define bfd_coff_bad_format_hook(abfd, filehdr) \ |
| 796 | . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr)) |
| 797 | . |
| 798 | .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\ |
| 799 | . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr)) |
| 800 | .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\ |
| 801 | . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr)) |
| 802 | . |
| 803 | .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\ |
| 804 | . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name)) |
| 805 | . |
| 806 | .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\ |
| 807 | . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr)) |
| 808 | . |
| 809 | .#define bfd_coff_slurp_symbol_table(abfd)\ |
| 810 | . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd)) |
| 811 | . |
| 812 | .#define bfd_coff_symname_in_debug(abfd, sym)\ |
| 813 | . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym)) |
| 814 | . |
| 815 | .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\ |
| 816 | . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\ |
| 817 | . (abfd, file, base, symbol, aux, indaux)) |
| 818 | . |
| 819 | .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\ |
| 820 | . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\ |
| 821 | . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)) |
| 822 | . |
| 823 | .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\ |
| 824 | . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\ |
| 825 | . (abfd, section, reloc, shrink, link_info)) |
| 826 | . |
| 827 | .#define bfd_coff_sym_is_global(abfd, sym)\ |
| 828 | . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\ |
| 829 | . (abfd, sym)) |
| 830 | . |
| 831 | .#define bfd_coff_compute_section_file_positions(abfd)\ |
| 832 | . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\ |
| 833 | . (abfd)) |
| 834 | . |
| 835 | .#define bfd_coff_start_final_link(obfd, info)\ |
| 836 | . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\ |
| 837 | . (obfd, info)) |
| 838 | .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\ |
| 839 | . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\ |
| 840 | . (obfd, info, ibfd, o, con, rel, isyms, secs)) |
| 841 | .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\ |
| 842 | . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\ |
| 843 | . (abfd, sec, rel, h, sym, addendp)) |
| 844 | .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\ |
| 845 | . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\ |
| 846 | . (obfd, info, ibfd, sec, rel, adjustedp)) |
| 847 | .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\ |
| 848 | . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\ |
| 849 | . (info, abfd, name, flags, section, value, string, cp, coll, hashp)) |
| 850 | . |
| 851 | */ |
| 852 | |
| 853 | /* See whether the magic number matches. */ |
| 854 | |
| 855 | static boolean |
| 856 | coff_bad_format_hook (abfd, filehdr) |
| 857 | bfd * abfd; |
| 858 | PTR filehdr; |
| 859 | { |
| 860 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 861 | |
| 862 | if (BADMAG (*internal_f)) |
| 863 | return false; |
| 864 | |
| 865 | /* if the optional header is NULL or not the correct size then |
| 866 | quit; the only difference I can see between m88k dgux headers (MC88DMAGIC) |
| 867 | and Intel 960 readwrite headers (I960WRMAGIC) is that the |
| 868 | optional header is of a different size. |
| 869 | |
| 870 | But the mips keeps extra stuff in it's opthdr, so dont check |
| 871 | when doing that |
| 872 | */ |
| 873 | |
| 874 | #if defined(M88) || defined(I960) |
| 875 | if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr) |
| 876 | return false; |
| 877 | #endif |
| 878 | |
| 879 | return true; |
| 880 | } |
| 881 | |
| 882 | /* |
| 883 | initialize a section structure with information peculiar to this |
| 884 | particular implementation of coff |
| 885 | */ |
| 886 | |
| 887 | static boolean |
| 888 | coff_new_section_hook (abfd, section) |
| 889 | bfd * abfd; |
| 890 | asection * section; |
| 891 | { |
| 892 | section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER; |
| 893 | |
| 894 | #ifdef RS6000COFF_C |
| 895 | if (xcoff_data (abfd)->text_align_power != 0 |
| 896 | && strcmp (bfd_get_section_name (abfd, section), ".text") == 0) |
| 897 | section->alignment_power = xcoff_data (abfd)->text_align_power; |
| 898 | if (xcoff_data (abfd)->data_align_power != 0 |
| 899 | && strcmp (bfd_get_section_name (abfd, section), ".data") == 0) |
| 900 | section->alignment_power = xcoff_data (abfd)->data_align_power; |
| 901 | #endif |
| 902 | |
| 903 | /* Allocate aux records for section symbols, to store size and |
| 904 | related info. |
| 905 | |
| 906 | @@ The 10 is a guess at a plausible maximum number of aux entries |
| 907 | (but shouldn't be a constant). */ |
| 908 | coffsymbol (section->symbol)->native = |
| 909 | (combined_entry_type *) bfd_zalloc (abfd, |
| 910 | sizeof (combined_entry_type) * 10); |
| 911 | |
| 912 | /* The .stab section must be aligned to 2**2 at most, because |
| 913 | otherwise there may be gaps in the section which gdb will not |
| 914 | know how to interpret. Examining the section name is a hack, but |
| 915 | that is also how gdb locates the section. |
| 916 | We need to handle the .ctors and .dtors sections similarly, to |
| 917 | avoid introducing null words in the tables. */ |
| 918 | if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 2 |
| 919 | && (strncmp (section->name, ".stab", 5) == 0 |
| 920 | || strcmp (section->name, ".ctors") == 0 |
| 921 | || strcmp (section->name, ".dtors") == 0)) |
| 922 | section->alignment_power = 2; |
| 923 | |
| 924 | /* Similarly, the .stabstr section must be aligned to 2**0 at most. */ |
| 925 | if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 0 |
| 926 | && strncmp (section->name, ".stabstr", 8) == 0) |
| 927 | section->alignment_power = 0; |
| 928 | |
| 929 | return true; |
| 930 | } |
| 931 | |
| 932 | #ifdef I960 |
| 933 | |
| 934 | /* Set the alignment of a BFD section. */ |
| 935 | |
| 936 | static void |
| 937 | coff_set_alignment_hook (abfd, section, scnhdr) |
| 938 | bfd * abfd; |
| 939 | asection * section; |
| 940 | PTR scnhdr; |
| 941 | { |
| 942 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
| 943 | unsigned int i; |
| 944 | |
| 945 | for (i = 0; i < 32; i++) |
| 946 | if ((1 << i) >= hdr->s_align) |
| 947 | break; |
| 948 | section->alignment_power = i; |
| 949 | } |
| 950 | |
| 951 | #else /* ! I960 */ |
| 952 | #ifdef COFF_WITH_PE |
| 953 | |
| 954 | /* a couple of macros to help setting the alignment power field */ |
| 955 | #define ALIGN_SET(field,x,y) \ |
| 956 | if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\ |
| 957 | {\ |
| 958 | section->alignment_power = y;\ |
| 959 | } |
| 960 | |
| 961 | #define ELIFALIGN_SET(field,x,y) \ |
| 962 | else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \ |
| 963 | {\ |
| 964 | section->alignment_power = y;\ |
| 965 | } |
| 966 | |
| 967 | static void |
| 968 | coff_set_alignment_hook (abfd, section, scnhdr) |
| 969 | bfd * abfd; |
| 970 | asection * section; |
| 971 | PTR scnhdr; |
| 972 | { |
| 973 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
| 974 | |
| 975 | ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6) |
| 976 | ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5) |
| 977 | ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4) |
| 978 | ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3) |
| 979 | ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2) |
| 980 | ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1) |
| 981 | ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0) |
| 982 | |
| 983 | #ifdef POWERPC_LE_PE |
| 984 | if (strcmp (section->name, ".idata$2") == 0) |
| 985 | { |
| 986 | section->alignment_power = 0; |
| 987 | } |
| 988 | else if (strcmp (section->name, ".idata$3") == 0) |
| 989 | { |
| 990 | section->alignment_power = 0; |
| 991 | } |
| 992 | else if (strcmp (section->name, ".idata$4") == 0) |
| 993 | { |
| 994 | section->alignment_power = 2; |
| 995 | } |
| 996 | else if (strcmp (section->name, ".idata$5") == 0) |
| 997 | { |
| 998 | section->alignment_power = 2; |
| 999 | } |
| 1000 | else if (strcmp (section->name, ".idata$6") == 0) |
| 1001 | { |
| 1002 | section->alignment_power = 1; |
| 1003 | } |
| 1004 | else if (strcmp (section->name, ".reloc") == 0) |
| 1005 | { |
| 1006 | section->alignment_power = 1; |
| 1007 | } |
| 1008 | else if (strncmp (section->name, ".stab", 5) == 0) |
| 1009 | { |
| 1010 | section->alignment_power = 2; |
| 1011 | } |
| 1012 | #endif |
| 1013 | } |
| 1014 | #undef ALIGN_SET |
| 1015 | #undef ELIFALIGN_SET |
| 1016 | |
| 1017 | #else /* ! COFF_WITH_PE */ |
| 1018 | #ifdef RS6000COFF_C |
| 1019 | |
| 1020 | /* We grossly abuse this function to handle XCOFF overflow headers. |
| 1021 | When we see one, we correct the reloc and line number counts in the |
| 1022 | real header, and remove the section we just created. */ |
| 1023 | |
| 1024 | static void |
| 1025 | coff_set_alignment_hook (abfd, section, scnhdr) |
| 1026 | bfd *abfd; |
| 1027 | asection *section; |
| 1028 | PTR scnhdr; |
| 1029 | { |
| 1030 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
| 1031 | asection *real_sec; |
| 1032 | asection **ps; |
| 1033 | |
| 1034 | if ((hdr->s_flags & STYP_OVRFLO) == 0) |
| 1035 | return; |
| 1036 | |
| 1037 | real_sec = coff_section_from_bfd_index (abfd, hdr->s_nreloc); |
| 1038 | if (real_sec == NULL) |
| 1039 | return; |
| 1040 | |
| 1041 | real_sec->reloc_count = hdr->s_paddr; |
| 1042 | real_sec->lineno_count = hdr->s_vaddr; |
| 1043 | |
| 1044 | for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next) |
| 1045 | { |
| 1046 | if (*ps == section) |
| 1047 | { |
| 1048 | *ps = (*ps)->next; |
| 1049 | --abfd->section_count; |
| 1050 | break; |
| 1051 | } |
| 1052 | } |
| 1053 | } |
| 1054 | |
| 1055 | #else /* ! RS6000COFF_C */ |
| 1056 | |
| 1057 | #define coff_set_alignment_hook \ |
| 1058 | ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void) |
| 1059 | |
| 1060 | #endif /* ! RS6000COFF_C */ |
| 1061 | #endif /* ! COFF_WITH_PE */ |
| 1062 | #endif /* ! I960 */ |
| 1063 | |
| 1064 | #ifndef coff_mkobject |
| 1065 | static boolean |
| 1066 | coff_mkobject (abfd) |
| 1067 | bfd * abfd; |
| 1068 | { |
| 1069 | coff_data_type *coff; |
| 1070 | |
| 1071 | abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type)); |
| 1072 | if (abfd->tdata.coff_obj_data == 0) |
| 1073 | return false; |
| 1074 | coff = coff_data (abfd); |
| 1075 | coff->symbols = (coff_symbol_type *) NULL; |
| 1076 | coff->conversion_table = (unsigned int *) NULL; |
| 1077 | coff->raw_syments = (struct coff_ptr_struct *) NULL; |
| 1078 | coff->relocbase = 0; |
| 1079 | coff->local_toc_sym_map = 0; |
| 1080 | |
| 1081 | /* make_abs_section(abfd);*/ |
| 1082 | |
| 1083 | return true; |
| 1084 | } |
| 1085 | #endif |
| 1086 | |
| 1087 | /* Create the COFF backend specific information. */ |
| 1088 | #ifndef coff_mkobject_hook |
| 1089 | static PTR |
| 1090 | coff_mkobject_hook (abfd, filehdr, aouthdr) |
| 1091 | bfd * abfd; |
| 1092 | PTR filehdr; |
| 1093 | PTR aouthdr; |
| 1094 | { |
| 1095 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 1096 | coff_data_type *coff; |
| 1097 | |
| 1098 | if (coff_mkobject (abfd) == false) |
| 1099 | return NULL; |
| 1100 | |
| 1101 | coff = coff_data (abfd); |
| 1102 | |
| 1103 | coff->sym_filepos = internal_f->f_symptr; |
| 1104 | |
| 1105 | /* These members communicate important constants about the symbol |
| 1106 | table to GDB's symbol-reading code. These `constants' |
| 1107 | unfortunately vary among coff implementations... */ |
| 1108 | coff->local_n_btmask = N_BTMASK; |
| 1109 | coff->local_n_btshft = N_BTSHFT; |
| 1110 | coff->local_n_tmask = N_TMASK; |
| 1111 | coff->local_n_tshift = N_TSHIFT; |
| 1112 | coff->local_symesz = SYMESZ; |
| 1113 | coff->local_auxesz = AUXESZ; |
| 1114 | coff->local_linesz = LINESZ; |
| 1115 | |
| 1116 | obj_raw_syment_count (abfd) = |
| 1117 | obj_conv_table_size (abfd) = |
| 1118 | internal_f->f_nsyms; |
| 1119 | |
| 1120 | #ifdef RS6000COFF_C |
| 1121 | if ((internal_f->f_flags & F_SHROBJ) != 0) |
| 1122 | abfd->flags |= DYNAMIC; |
| 1123 | if (aouthdr != NULL && internal_f->f_opthdr >= AOUTSZ) |
| 1124 | { |
| 1125 | struct internal_aouthdr *internal_a = |
| 1126 | (struct internal_aouthdr *) aouthdr; |
| 1127 | struct xcoff_tdata *xcoff; |
| 1128 | |
| 1129 | xcoff = xcoff_data (abfd); |
| 1130 | xcoff->full_aouthdr = true; |
| 1131 | xcoff->toc = internal_a->o_toc; |
| 1132 | xcoff->sntoc = internal_a->o_sntoc; |
| 1133 | xcoff->snentry = internal_a->o_snentry; |
| 1134 | xcoff->text_align_power = internal_a->o_algntext; |
| 1135 | xcoff->data_align_power = internal_a->o_algndata; |
| 1136 | xcoff->modtype = internal_a->o_modtype; |
| 1137 | xcoff->cputype = internal_a->o_cputype; |
| 1138 | xcoff->maxdata = internal_a->o_maxdata; |
| 1139 | xcoff->maxstack = internal_a->o_maxstack; |
| 1140 | } |
| 1141 | #endif |
| 1142 | |
| 1143 | return (PTR) coff; |
| 1144 | } |
| 1145 | #endif |
| 1146 | |
| 1147 | /* Determine the machine architecture and type. FIXME: This is target |
| 1148 | dependent because the magic numbers are defined in the target |
| 1149 | dependent header files. But there is no particular need for this. |
| 1150 | If the magic numbers were moved to a separate file, this function |
| 1151 | would be target independent and would also be much more successful |
| 1152 | at linking together COFF files for different architectures. */ |
| 1153 | |
| 1154 | static boolean |
| 1155 | coff_set_arch_mach_hook (abfd, filehdr) |
| 1156 | bfd *abfd; |
| 1157 | PTR filehdr; |
| 1158 | { |
| 1159 | long machine; |
| 1160 | enum bfd_architecture arch; |
| 1161 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 1162 | |
| 1163 | machine = 0; |
| 1164 | switch (internal_f->f_magic) |
| 1165 | { |
| 1166 | #ifdef PPCMAGIC |
| 1167 | case PPCMAGIC: |
| 1168 | arch = bfd_arch_powerpc; |
| 1169 | machine = 0; /* what does this mean? (krk) */ |
| 1170 | break; |
| 1171 | #endif |
| 1172 | #ifdef I386MAGIC |
| 1173 | case I386MAGIC: |
| 1174 | case I386PTXMAGIC: |
| 1175 | case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */ |
| 1176 | case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */ |
| 1177 | arch = bfd_arch_i386; |
| 1178 | machine = 0; |
| 1179 | break; |
| 1180 | #endif |
| 1181 | #ifdef A29K_MAGIC_BIG |
| 1182 | case A29K_MAGIC_BIG: |
| 1183 | case A29K_MAGIC_LITTLE: |
| 1184 | arch = bfd_arch_a29k; |
| 1185 | machine = 0; |
| 1186 | break; |
| 1187 | #endif |
| 1188 | #ifdef ARMMAGIC |
| 1189 | case ARMMAGIC: |
| 1190 | arch = bfd_arch_arm; |
| 1191 | machine =0; |
| 1192 | break; |
| 1193 | #endif |
| 1194 | #ifdef MC68MAGIC |
| 1195 | case MC68MAGIC: |
| 1196 | case M68MAGIC: |
| 1197 | #ifdef MC68KBCSMAGIC |
| 1198 | case MC68KBCSMAGIC: |
| 1199 | #endif |
| 1200 | #ifdef APOLLOM68KMAGIC |
| 1201 | case APOLLOM68KMAGIC: |
| 1202 | #endif |
| 1203 | #ifdef LYNXCOFFMAGIC |
| 1204 | case LYNXCOFFMAGIC: |
| 1205 | #endif |
| 1206 | arch = bfd_arch_m68k; |
| 1207 | machine = 68020; |
| 1208 | break; |
| 1209 | #endif |
| 1210 | #ifdef MC88MAGIC |
| 1211 | case MC88MAGIC: |
| 1212 | case MC88DMAGIC: |
| 1213 | case MC88OMAGIC: |
| 1214 | arch = bfd_arch_m88k; |
| 1215 | machine = 88100; |
| 1216 | break; |
| 1217 | #endif |
| 1218 | #ifdef Z8KMAGIC |
| 1219 | case Z8KMAGIC: |
| 1220 | arch = bfd_arch_z8k; |
| 1221 | switch (internal_f->f_flags & F_MACHMASK) |
| 1222 | { |
| 1223 | case F_Z8001: |
| 1224 | machine = bfd_mach_z8001; |
| 1225 | break; |
| 1226 | case F_Z8002: |
| 1227 | machine = bfd_mach_z8002; |
| 1228 | break; |
| 1229 | default: |
| 1230 | return false; |
| 1231 | } |
| 1232 | break; |
| 1233 | #endif |
| 1234 | #ifdef I860 |
| 1235 | case I860MAGIC: |
| 1236 | arch = bfd_arch_i860; |
| 1237 | break; |
| 1238 | #endif |
| 1239 | #ifdef I960 |
| 1240 | #ifdef I960ROMAGIC |
| 1241 | case I960ROMAGIC: |
| 1242 | case I960RWMAGIC: |
| 1243 | arch = bfd_arch_i960; |
| 1244 | switch (F_I960TYPE & internal_f->f_flags) |
| 1245 | { |
| 1246 | default: |
| 1247 | case F_I960CORE: |
| 1248 | machine = bfd_mach_i960_core; |
| 1249 | break; |
| 1250 | case F_I960KB: |
| 1251 | machine = bfd_mach_i960_kb_sb; |
| 1252 | break; |
| 1253 | case F_I960MC: |
| 1254 | machine = bfd_mach_i960_mc; |
| 1255 | break; |
| 1256 | case F_I960XA: |
| 1257 | machine = bfd_mach_i960_xa; |
| 1258 | break; |
| 1259 | case F_I960CA: |
| 1260 | machine = bfd_mach_i960_ca; |
| 1261 | break; |
| 1262 | case F_I960KA: |
| 1263 | machine = bfd_mach_i960_ka_sa; |
| 1264 | break; |
| 1265 | case F_I960JX: |
| 1266 | machine = bfd_mach_i960_jx; |
| 1267 | break; |
| 1268 | case F_I960HX: |
| 1269 | machine = bfd_mach_i960_hx; |
| 1270 | break; |
| 1271 | } |
| 1272 | break; |
| 1273 | #endif |
| 1274 | #endif |
| 1275 | |
| 1276 | #ifdef RS6000COFF_C |
| 1277 | case U802ROMAGIC: |
| 1278 | case U802WRMAGIC: |
| 1279 | case U802TOCMAGIC: |
| 1280 | { |
| 1281 | int cputype; |
| 1282 | |
| 1283 | if (xcoff_data (abfd)->cputype != -1) |
| 1284 | cputype = xcoff_data (abfd)->cputype & 0xff; |
| 1285 | else |
| 1286 | { |
| 1287 | /* We did not get a value from the a.out header. If the |
| 1288 | file has not been stripped, we may be able to get the |
| 1289 | architecture information from the first symbol, if it |
| 1290 | is a .file symbol. */ |
| 1291 | if (obj_raw_syment_count (abfd) == 0) |
| 1292 | cputype = 0; |
| 1293 | else |
| 1294 | { |
| 1295 | bfd_byte buf[SYMESZ]; |
| 1296 | struct internal_syment sym; |
| 1297 | |
| 1298 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 |
| 1299 | || bfd_read (buf, 1, SYMESZ, abfd) != SYMESZ) |
| 1300 | return false; |
| 1301 | coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym); |
| 1302 | if (sym.n_sclass == C_FILE) |
| 1303 | cputype = sym.n_type & 0xff; |
| 1304 | else |
| 1305 | cputype = 0; |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | /* FIXME: We don't handle all cases here. */ |
| 1310 | switch (cputype) |
| 1311 | { |
| 1312 | default: |
| 1313 | case 0: |
| 1314 | #ifdef POWERMAC |
| 1315 | /* PowerPC Macs use the same magic numbers as RS/6000 |
| 1316 | (because that's how they were bootstrapped originally), |
| 1317 | but they are always PowerPC architecture. */ |
| 1318 | arch = bfd_arch_powerpc; |
| 1319 | machine = 0; |
| 1320 | #else |
| 1321 | arch = bfd_arch_rs6000; |
| 1322 | machine = 6000; |
| 1323 | #endif /* POWERMAC */ |
| 1324 | break; |
| 1325 | |
| 1326 | case 1: |
| 1327 | arch = bfd_arch_powerpc; |
| 1328 | machine = 601; |
| 1329 | break; |
| 1330 | case 2: /* 64 bit PowerPC */ |
| 1331 | arch = bfd_arch_powerpc; |
| 1332 | machine = 620; |
| 1333 | break; |
| 1334 | case 3: |
| 1335 | arch = bfd_arch_powerpc; |
| 1336 | machine = 0; |
| 1337 | break; |
| 1338 | case 4: |
| 1339 | arch = bfd_arch_rs6000; |
| 1340 | machine = 6000; |
| 1341 | break; |
| 1342 | } |
| 1343 | } |
| 1344 | break; |
| 1345 | #endif |
| 1346 | |
| 1347 | #ifdef WE32KMAGIC |
| 1348 | case WE32KMAGIC: |
| 1349 | arch = bfd_arch_we32k; |
| 1350 | machine = 0; |
| 1351 | break; |
| 1352 | #endif |
| 1353 | |
| 1354 | #ifdef H8300MAGIC |
| 1355 | case H8300MAGIC: |
| 1356 | arch = bfd_arch_h8300; |
| 1357 | machine = bfd_mach_h8300; |
| 1358 | /* !! FIXME this probably isn't the right place for this */ |
| 1359 | abfd->flags |= BFD_IS_RELAXABLE; |
| 1360 | break; |
| 1361 | #endif |
| 1362 | |
| 1363 | #ifdef H8300HMAGIC |
| 1364 | case H8300HMAGIC: |
| 1365 | arch = bfd_arch_h8300; |
| 1366 | machine = bfd_mach_h8300h; |
| 1367 | /* !! FIXME this probably isn't the right place for this */ |
| 1368 | abfd->flags |= BFD_IS_RELAXABLE; |
| 1369 | break; |
| 1370 | #endif |
| 1371 | |
| 1372 | #ifdef SH_ARCH_MAGIC_BIG |
| 1373 | case SH_ARCH_MAGIC_BIG: |
| 1374 | case SH_ARCH_MAGIC_LITTLE: |
| 1375 | arch = bfd_arch_sh; |
| 1376 | machine = 0; |
| 1377 | break; |
| 1378 | #endif |
| 1379 | |
| 1380 | #ifdef H8500MAGIC |
| 1381 | case H8500MAGIC: |
| 1382 | arch = bfd_arch_h8500; |
| 1383 | machine = 0; |
| 1384 | break; |
| 1385 | #endif |
| 1386 | |
| 1387 | #ifdef SPARCMAGIC |
| 1388 | case SPARCMAGIC: |
| 1389 | #ifdef LYNXCOFFMAGIC |
| 1390 | case LYNXCOFFMAGIC: |
| 1391 | #endif |
| 1392 | arch = bfd_arch_sparc; |
| 1393 | machine = 0; |
| 1394 | break; |
| 1395 | #endif |
| 1396 | |
| 1397 | default: /* Unreadable input file type */ |
| 1398 | arch = bfd_arch_obscure; |
| 1399 | break; |
| 1400 | } |
| 1401 | |
| 1402 | bfd_default_set_arch_mach (abfd, arch, machine); |
| 1403 | return true; |
| 1404 | } |
| 1405 | |
| 1406 | #ifdef SYMNAME_IN_DEBUG |
| 1407 | |
| 1408 | static boolean |
| 1409 | symname_in_debug_hook (abfd, sym) |
| 1410 | bfd * abfd; |
| 1411 | struct internal_syment *sym; |
| 1412 | { |
| 1413 | return SYMNAME_IN_DEBUG (sym) ? true : false; |
| 1414 | } |
| 1415 | |
| 1416 | #else |
| 1417 | |
| 1418 | #define symname_in_debug_hook \ |
| 1419 | (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false |
| 1420 | |
| 1421 | #endif |
| 1422 | |
| 1423 | #ifdef RS6000COFF_C |
| 1424 | |
| 1425 | /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */ |
| 1426 | |
| 1427 | static boolean coff_pointerize_aux_hook |
| 1428 | PARAMS ((bfd *, combined_entry_type *, combined_entry_type *, |
| 1429 | unsigned int, combined_entry_type *)); |
| 1430 | |
| 1431 | /*ARGSUSED*/ |
| 1432 | static boolean |
| 1433 | coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux) |
| 1434 | bfd *abfd; |
| 1435 | combined_entry_type *table_base; |
| 1436 | combined_entry_type *symbol; |
| 1437 | unsigned int indaux; |
| 1438 | combined_entry_type *aux; |
| 1439 | { |
| 1440 | int class = symbol->u.syment.n_sclass; |
| 1441 | |
| 1442 | if ((class == C_EXT || class == C_HIDEXT) |
| 1443 | && indaux + 1 == symbol->u.syment.n_numaux) |
| 1444 | { |
| 1445 | if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD) |
| 1446 | { |
| 1447 | aux->u.auxent.x_csect.x_scnlen.p = |
| 1448 | table_base + aux->u.auxent.x_csect.x_scnlen.l; |
| 1449 | aux->fix_scnlen = 1; |
| 1450 | } |
| 1451 | |
| 1452 | /* Return true to indicate that the caller should not do any |
| 1453 | further work on this auxent. */ |
| 1454 | return true; |
| 1455 | } |
| 1456 | |
| 1457 | /* Return false to indicate that this auxent should be handled by |
| 1458 | the caller. */ |
| 1459 | return false; |
| 1460 | } |
| 1461 | |
| 1462 | #else |
| 1463 | #ifdef I960 |
| 1464 | |
| 1465 | /* We don't want to pointerize bal entries. */ |
| 1466 | |
| 1467 | static boolean coff_pointerize_aux_hook |
| 1468 | PARAMS ((bfd *, combined_entry_type *, combined_entry_type *, |
| 1469 | unsigned int, combined_entry_type *)); |
| 1470 | |
| 1471 | /*ARGSUSED*/ |
| 1472 | static boolean |
| 1473 | coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux) |
| 1474 | bfd *abfd; |
| 1475 | combined_entry_type *table_base; |
| 1476 | combined_entry_type *symbol; |
| 1477 | unsigned int indaux; |
| 1478 | combined_entry_type *aux; |
| 1479 | { |
| 1480 | /* Return true if we don't want to pointerize this aux entry, which |
| 1481 | is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */ |
| 1482 | return (indaux == 1 |
| 1483 | && (symbol->u.syment.n_sclass == C_LEAFPROC |
| 1484 | || symbol->u.syment.n_sclass == C_LEAFSTAT |
| 1485 | || symbol->u.syment.n_sclass == C_LEAFEXT)); |
| 1486 | } |
| 1487 | |
| 1488 | #else /* ! I960 */ |
| 1489 | |
| 1490 | #define coff_pointerize_aux_hook 0 |
| 1491 | |
| 1492 | #endif /* ! I960 */ |
| 1493 | #endif /* ! RS6000COFF_C */ |
| 1494 | |
| 1495 | /* Print an aux entry. This returns true if it has printed it. */ |
| 1496 | |
| 1497 | static boolean coff_print_aux |
| 1498 | PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *, |
| 1499 | combined_entry_type *, unsigned int)); |
| 1500 | |
| 1501 | static boolean |
| 1502 | coff_print_aux (abfd, file, table_base, symbol, aux, indaux) |
| 1503 | bfd *abfd; |
| 1504 | FILE *file; |
| 1505 | combined_entry_type *table_base; |
| 1506 | combined_entry_type *symbol; |
| 1507 | combined_entry_type *aux; |
| 1508 | unsigned int indaux; |
| 1509 | { |
| 1510 | #ifdef RS6000COFF_C |
| 1511 | if ((symbol->u.syment.n_sclass == C_EXT |
| 1512 | || symbol->u.syment.n_sclass == C_HIDEXT) |
| 1513 | && indaux + 1 == symbol->u.syment.n_numaux) |
| 1514 | { |
| 1515 | /* This is a csect entry. */ |
| 1516 | fprintf (file, "AUX "); |
| 1517 | if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD) |
| 1518 | { |
| 1519 | BFD_ASSERT (! aux->fix_scnlen); |
| 1520 | fprintf (file, "val %5ld", aux->u.auxent.x_csect.x_scnlen.l); |
| 1521 | } |
| 1522 | else |
| 1523 | { |
| 1524 | fprintf (file, "indx "); |
| 1525 | if (! aux->fix_scnlen) |
| 1526 | fprintf (file, "%4ld", aux->u.auxent.x_csect.x_scnlen.l); |
| 1527 | else |
| 1528 | fprintf (file, "%4ld", |
| 1529 | (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base)); |
| 1530 | } |
| 1531 | fprintf (file, |
| 1532 | " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u", |
| 1533 | aux->u.auxent.x_csect.x_parmhash, |
| 1534 | (unsigned int) aux->u.auxent.x_csect.x_snhash, |
| 1535 | SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp), |
| 1536 | SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp), |
| 1537 | (unsigned int) aux->u.auxent.x_csect.x_smclas, |
| 1538 | aux->u.auxent.x_csect.x_stab, |
| 1539 | (unsigned int) aux->u.auxent.x_csect.x_snstab); |
| 1540 | return true; |
| 1541 | } |
| 1542 | #endif |
| 1543 | |
| 1544 | /* Return false to indicate that no special action was taken. */ |
| 1545 | return false; |
| 1546 | } |
| 1547 | |
| 1548 | /* |
| 1549 | SUBSUBSECTION |
| 1550 | Writing relocations |
| 1551 | |
| 1552 | To write relocations, the back end steps though the |
| 1553 | canonical relocation table and create an |
| 1554 | @code{internal_reloc}. The symbol index to use is removed from |
| 1555 | the @code{offset} field in the symbol table supplied. The |
| 1556 | address comes directly from the sum of the section base |
| 1557 | address and the relocation offset; the type is dug directly |
| 1558 | from the howto field. Then the @code{internal_reloc} is |
| 1559 | swapped into the shape of an @code{external_reloc} and written |
| 1560 | out to disk. |
| 1561 | |
| 1562 | */ |
| 1563 | |
| 1564 | #ifdef TARG_AUX |
| 1565 | |
| 1566 | static int compare_arelent_ptr PARAMS ((const PTR, const PTR)); |
| 1567 | |
| 1568 | /* AUX's ld wants relocations to be sorted */ |
| 1569 | static int |
| 1570 | compare_arelent_ptr (x, y) |
| 1571 | const PTR x; |
| 1572 | const PTR y; |
| 1573 | { |
| 1574 | const arelent **a = (const arelent **) x; |
| 1575 | const arelent **b = (const arelent **) y; |
| 1576 | bfd_size_type aadr = (*a)->address; |
| 1577 | bfd_size_type badr = (*b)->address; |
| 1578 | |
| 1579 | return (aadr < badr ? -1 : badr < aadr ? 1 : 0); |
| 1580 | } |
| 1581 | |
| 1582 | #endif /* TARG_AUX */ |
| 1583 | |
| 1584 | static boolean |
| 1585 | coff_write_relocs (abfd, first_undef) |
| 1586 | bfd * abfd; |
| 1587 | int first_undef; |
| 1588 | { |
| 1589 | asection *s; |
| 1590 | |
| 1591 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
| 1592 | { |
| 1593 | unsigned int i; |
| 1594 | struct external_reloc dst; |
| 1595 | arelent **p; |
| 1596 | |
| 1597 | #ifndef TARG_AUX |
| 1598 | p = s->orelocation; |
| 1599 | #else |
| 1600 | /* sort relocations before we write them out */ |
| 1601 | p = (arelent **) bfd_malloc (s->reloc_count * sizeof (arelent *)); |
| 1602 | if (p == NULL && s->reloc_count > 0) |
| 1603 | return false; |
| 1604 | memcpy (p, s->orelocation, s->reloc_count * sizeof (arelent *)); |
| 1605 | qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr); |
| 1606 | #endif |
| 1607 | |
| 1608 | if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0) |
| 1609 | return false; |
| 1610 | for (i = 0; i < s->reloc_count; i++) |
| 1611 | { |
| 1612 | struct internal_reloc n; |
| 1613 | arelent *q = p[i]; |
| 1614 | memset ((PTR) & n, 0, sizeof (n)); |
| 1615 | |
| 1616 | /* Now we've renumbered the symbols we know where the |
| 1617 | undefined symbols live in the table. Check the reloc |
| 1618 | entries for symbols who's output bfd isn't the right one. |
| 1619 | This is because the symbol was undefined (which means |
| 1620 | that all the pointers are never made to point to the same |
| 1621 | place). This is a bad thing,'cause the symbols attached |
| 1622 | to the output bfd are indexed, so that the relocation |
| 1623 | entries know which symbol index they point to. So we |
| 1624 | have to look up the output symbol here. */ |
| 1625 | |
| 1626 | if (q->sym_ptr_ptr[0]->the_bfd != abfd) |
| 1627 | { |
| 1628 | int i; |
| 1629 | const char *sname = q->sym_ptr_ptr[0]->name; |
| 1630 | asymbol **outsyms = abfd->outsymbols; |
| 1631 | for (i = first_undef; outsyms[i]; i++) |
| 1632 | { |
| 1633 | const char *intable = outsyms[i]->name; |
| 1634 | if (strcmp (intable, sname) == 0) { |
| 1635 | /* got a hit, so repoint the reloc */ |
| 1636 | q->sym_ptr_ptr = outsyms + i; |
| 1637 | break; |
| 1638 | } |
| 1639 | } |
| 1640 | } |
| 1641 | |
| 1642 | n.r_vaddr = q->address + s->vma; |
| 1643 | |
| 1644 | #ifdef R_IHCONST |
| 1645 | /* The 29k const/consth reloc pair is a real kludge. The consth |
| 1646 | part doesn't have a symbol; it has an offset. So rebuilt |
| 1647 | that here. */ |
| 1648 | if (q->howto->type == R_IHCONST) |
| 1649 | n.r_symndx = q->addend; |
| 1650 | else |
| 1651 | #endif |
| 1652 | if (q->sym_ptr_ptr) |
| 1653 | { |
| 1654 | if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr) |
| 1655 | /* This is a relocation relative to the absolute symbol. */ |
| 1656 | n.r_symndx = -1; |
| 1657 | else |
| 1658 | { |
| 1659 | n.r_symndx = get_index ((*(q->sym_ptr_ptr))); |
| 1660 | /* Take notice if the symbol reloc points to a symbol |
| 1661 | we don't have in our symbol table. What should we |
| 1662 | do for this?? */ |
| 1663 | if (n.r_symndx > obj_conv_table_size (abfd)) |
| 1664 | abort (); |
| 1665 | } |
| 1666 | } |
| 1667 | |
| 1668 | #ifdef SWAP_OUT_RELOC_OFFSET |
| 1669 | n.r_offset = q->addend; |
| 1670 | #endif |
| 1671 | |
| 1672 | #ifdef SELECT_RELOC |
| 1673 | /* Work out reloc type from what is required */ |
| 1674 | SELECT_RELOC (n, q->howto); |
| 1675 | #else |
| 1676 | n.r_type = q->howto->type; |
| 1677 | #endif |
| 1678 | coff_swap_reloc_out (abfd, &n, &dst); |
| 1679 | if (bfd_write ((PTR) & dst, 1, RELSZ, abfd) != RELSZ) |
| 1680 | return false; |
| 1681 | } |
| 1682 | |
| 1683 | #ifdef TARG_AUX |
| 1684 | if (p != NULL) |
| 1685 | free (p); |
| 1686 | #endif |
| 1687 | } |
| 1688 | |
| 1689 | return true; |
| 1690 | } |
| 1691 | |
| 1692 | /* Set flags and magic number of a coff file from architecture and machine |
| 1693 | type. Result is true if we can represent the arch&type, false if not. */ |
| 1694 | |
| 1695 | static boolean |
| 1696 | coff_set_flags (abfd, magicp, flagsp) |
| 1697 | bfd * abfd; |
| 1698 | unsigned *magicp; |
| 1699 | unsigned short *flagsp; |
| 1700 | { |
| 1701 | switch (bfd_get_arch (abfd)) |
| 1702 | { |
| 1703 | #ifdef Z8KMAGIC |
| 1704 | case bfd_arch_z8k: |
| 1705 | *magicp = Z8KMAGIC; |
| 1706 | switch (bfd_get_mach (abfd)) |
| 1707 | { |
| 1708 | case bfd_mach_z8001: |
| 1709 | *flagsp = F_Z8001; |
| 1710 | break; |
| 1711 | case bfd_mach_z8002: |
| 1712 | *flagsp = F_Z8002; |
| 1713 | break; |
| 1714 | default: |
| 1715 | return false; |
| 1716 | } |
| 1717 | return true; |
| 1718 | #endif |
| 1719 | #ifdef I960ROMAGIC |
| 1720 | |
| 1721 | case bfd_arch_i960: |
| 1722 | |
| 1723 | { |
| 1724 | unsigned flags; |
| 1725 | *magicp = I960ROMAGIC; |
| 1726 | /* |
| 1727 | ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC : |
| 1728 | I960RWMAGIC); FIXME??? |
| 1729 | */ |
| 1730 | switch (bfd_get_mach (abfd)) |
| 1731 | { |
| 1732 | case bfd_mach_i960_core: |
| 1733 | flags = F_I960CORE; |
| 1734 | break; |
| 1735 | case bfd_mach_i960_kb_sb: |
| 1736 | flags = F_I960KB; |
| 1737 | break; |
| 1738 | case bfd_mach_i960_mc: |
| 1739 | flags = F_I960MC; |
| 1740 | break; |
| 1741 | case bfd_mach_i960_xa: |
| 1742 | flags = F_I960XA; |
| 1743 | break; |
| 1744 | case bfd_mach_i960_ca: |
| 1745 | flags = F_I960CA; |
| 1746 | break; |
| 1747 | case bfd_mach_i960_ka_sa: |
| 1748 | flags = F_I960KA; |
| 1749 | break; |
| 1750 | case bfd_mach_i960_jx: |
| 1751 | flags = F_I960JX; |
| 1752 | break; |
| 1753 | case bfd_mach_i960_hx: |
| 1754 | flags = F_I960HX; |
| 1755 | break; |
| 1756 | default: |
| 1757 | return false; |
| 1758 | } |
| 1759 | *flagsp = flags; |
| 1760 | return true; |
| 1761 | } |
| 1762 | break; |
| 1763 | #endif |
| 1764 | #ifdef ARMMAGIC |
| 1765 | case bfd_arch_arm: |
| 1766 | *magicp = ARMMAGIC; |
| 1767 | return true; |
| 1768 | #endif |
| 1769 | #ifdef PPCMAGIC |
| 1770 | case bfd_arch_powerpc: |
| 1771 | *magicp = PPCMAGIC; |
| 1772 | return true; |
| 1773 | break; |
| 1774 | #endif |
| 1775 | #ifdef I386MAGIC |
| 1776 | case bfd_arch_i386: |
| 1777 | *magicp = I386MAGIC; |
| 1778 | #ifdef LYNXOS |
| 1779 | /* Just overwrite the usual value if we're doing Lynx. */ |
| 1780 | *magicp = LYNXCOFFMAGIC; |
| 1781 | #endif |
| 1782 | return true; |
| 1783 | break; |
| 1784 | #endif |
| 1785 | #ifdef I860MAGIC |
| 1786 | case bfd_arch_i860: |
| 1787 | *magicp = I860MAGIC; |
| 1788 | return true; |
| 1789 | break; |
| 1790 | #endif |
| 1791 | #ifdef MC68MAGIC |
| 1792 | case bfd_arch_m68k: |
| 1793 | #ifdef APOLLOM68KMAGIC |
| 1794 | *magicp = APOLLO_COFF_VERSION_NUMBER; |
| 1795 | #else |
| 1796 | *magicp = MC68MAGIC; |
| 1797 | #endif |
| 1798 | #ifdef LYNXOS |
| 1799 | /* Just overwrite the usual value if we're doing Lynx. */ |
| 1800 | *magicp = LYNXCOFFMAGIC; |
| 1801 | #endif |
| 1802 | return true; |
| 1803 | break; |
| 1804 | #endif |
| 1805 | |
| 1806 | #ifdef MC88MAGIC |
| 1807 | case bfd_arch_m88k: |
| 1808 | *magicp = MC88OMAGIC; |
| 1809 | return true; |
| 1810 | break; |
| 1811 | #endif |
| 1812 | #ifdef H8300MAGIC |
| 1813 | case bfd_arch_h8300: |
| 1814 | switch (bfd_get_mach (abfd)) |
| 1815 | { |
| 1816 | case bfd_mach_h8300: |
| 1817 | *magicp = H8300MAGIC; |
| 1818 | return true; |
| 1819 | case bfd_mach_h8300h: |
| 1820 | *magicp = H8300HMAGIC; |
| 1821 | return true; |
| 1822 | } |
| 1823 | break; |
| 1824 | #endif |
| 1825 | |
| 1826 | #ifdef SH_ARCH_MAGIC_BIG |
| 1827 | case bfd_arch_sh: |
| 1828 | if (bfd_big_endian (abfd)) |
| 1829 | *magicp = SH_ARCH_MAGIC_BIG; |
| 1830 | else |
| 1831 | *magicp = SH_ARCH_MAGIC_LITTLE; |
| 1832 | return true; |
| 1833 | break; |
| 1834 | #endif |
| 1835 | |
| 1836 | #ifdef SPARCMAGIC |
| 1837 | case bfd_arch_sparc: |
| 1838 | *magicp = SPARCMAGIC; |
| 1839 | #ifdef LYNXOS |
| 1840 | /* Just overwrite the usual value if we're doing Lynx. */ |
| 1841 | *magicp = LYNXCOFFMAGIC; |
| 1842 | #endif |
| 1843 | return true; |
| 1844 | break; |
| 1845 | #endif |
| 1846 | |
| 1847 | #ifdef H8500MAGIC |
| 1848 | case bfd_arch_h8500: |
| 1849 | *magicp = H8500MAGIC; |
| 1850 | return true; |
| 1851 | break; |
| 1852 | #endif |
| 1853 | #ifdef A29K_MAGIC_BIG |
| 1854 | case bfd_arch_a29k: |
| 1855 | if (bfd_big_endian (abfd)) |
| 1856 | *magicp = A29K_MAGIC_BIG; |
| 1857 | else |
| 1858 | *magicp = A29K_MAGIC_LITTLE; |
| 1859 | return true; |
| 1860 | break; |
| 1861 | #endif |
| 1862 | |
| 1863 | #ifdef WE32KMAGIC |
| 1864 | case bfd_arch_we32k: |
| 1865 | *magicp = WE32KMAGIC; |
| 1866 | return true; |
| 1867 | break; |
| 1868 | #endif |
| 1869 | |
| 1870 | #ifdef U802TOCMAGIC |
| 1871 | case bfd_arch_rs6000: |
| 1872 | #ifndef PPCMAGIC |
| 1873 | case bfd_arch_powerpc: |
| 1874 | #endif |
| 1875 | *magicp = U802TOCMAGIC; |
| 1876 | return true; |
| 1877 | break; |
| 1878 | #endif |
| 1879 | |
| 1880 | default: /* Unknown architecture */ |
| 1881 | /* return false; -- fall through to "return false" below, to avoid |
| 1882 | "statement never reached" errors on the one below. */ |
| 1883 | break; |
| 1884 | } |
| 1885 | |
| 1886 | return false; |
| 1887 | } |
| 1888 | |
| 1889 | |
| 1890 | static boolean |
| 1891 | coff_set_arch_mach (abfd, arch, machine) |
| 1892 | bfd * abfd; |
| 1893 | enum bfd_architecture arch; |
| 1894 | unsigned long machine; |
| 1895 | { |
| 1896 | unsigned dummy1; |
| 1897 | unsigned short dummy2; |
| 1898 | |
| 1899 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) |
| 1900 | return false; |
| 1901 | |
| 1902 | if (arch != bfd_arch_unknown && |
| 1903 | coff_set_flags (abfd, &dummy1, &dummy2) != true) |
| 1904 | return false; /* We can't represent this type */ |
| 1905 | |
| 1906 | return true; /* We're easy ... */ |
| 1907 | } |
| 1908 | |
| 1909 | |
| 1910 | /* Calculate the file position for each section. */ |
| 1911 | |
| 1912 | static void |
| 1913 | coff_compute_section_file_positions (abfd) |
| 1914 | bfd * abfd; |
| 1915 | { |
| 1916 | asection *current; |
| 1917 | asection *previous = (asection *) NULL; |
| 1918 | file_ptr sofar = FILHSZ; |
| 1919 | |
| 1920 | #ifndef I960 |
| 1921 | file_ptr old_sofar; |
| 1922 | #endif |
| 1923 | unsigned int count; |
| 1924 | |
| 1925 | #ifdef RS6000COFF_C |
| 1926 | /* On XCOFF, if we have symbols, set up the .debug section. */ |
| 1927 | if (bfd_get_symcount (abfd) > 0) |
| 1928 | { |
| 1929 | bfd_size_type sz; |
| 1930 | bfd_size_type i, symcount; |
| 1931 | asymbol **symp; |
| 1932 | |
| 1933 | sz = 0; |
| 1934 | symcount = bfd_get_symcount (abfd); |
| 1935 | for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++) |
| 1936 | { |
| 1937 | coff_symbol_type *cf; |
| 1938 | |
| 1939 | cf = coff_symbol_from (abfd, *symp); |
| 1940 | if (cf != NULL |
| 1941 | && cf->native != NULL |
| 1942 | && SYMNAME_IN_DEBUG (&cf->native->u.syment)) |
| 1943 | { |
| 1944 | size_t len; |
| 1945 | |
| 1946 | len = strlen (bfd_asymbol_name (*symp)); |
| 1947 | if (len > SYMNMLEN) |
| 1948 | sz += len + 3; |
| 1949 | } |
| 1950 | } |
| 1951 | if (sz > 0) |
| 1952 | { |
| 1953 | asection *dsec; |
| 1954 | |
| 1955 | dsec = bfd_make_section_old_way (abfd, ".debug"); |
| 1956 | if (dsec == NULL) |
| 1957 | abort (); |
| 1958 | dsec->_raw_size = sz; |
| 1959 | dsec->flags |= SEC_HAS_CONTENTS; |
| 1960 | } |
| 1961 | } |
| 1962 | #endif |
| 1963 | |
| 1964 | #ifdef COFF_IMAGE_WITH_PE |
| 1965 | int page_size; |
| 1966 | if (coff_data (abfd)->link_info) |
| 1967 | { |
| 1968 | page_size = pe_data (abfd)->pe_opthdr.FileAlignment; |
| 1969 | } |
| 1970 | else |
| 1971 | page_size = PE_DEF_FILE_ALIGNMENT; |
| 1972 | #else |
| 1973 | #ifdef COFF_PAGE_SIZE |
| 1974 | int page_size = COFF_PAGE_SIZE; |
| 1975 | #endif |
| 1976 | #endif |
| 1977 | |
| 1978 | if (bfd_get_start_address (abfd)) |
| 1979 | { |
| 1980 | /* A start address may have been added to the original file. In this |
| 1981 | case it will need an optional header to record it. */ |
| 1982 | abfd->flags |= EXEC_P; |
| 1983 | } |
| 1984 | |
| 1985 | if (abfd->flags & EXEC_P) |
| 1986 | sofar += AOUTSZ; |
| 1987 | #ifdef RS6000COFF_C |
| 1988 | else if (xcoff_data (abfd)->full_aouthdr) |
| 1989 | sofar += AOUTSZ; |
| 1990 | else |
| 1991 | sofar += SMALL_AOUTSZ; |
| 1992 | #endif |
| 1993 | |
| 1994 | sofar += abfd->section_count * SCNHSZ; |
| 1995 | |
| 1996 | #ifdef RS6000COFF_C |
| 1997 | /* XCOFF handles overflows in the reloc and line number count fields |
| 1998 | by allocating a new section header to hold the correct counts. */ |
| 1999 | for (current = abfd->sections; current != NULL; current = current->next) |
| 2000 | if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
| 2001 | sofar += SCNHSZ; |
| 2002 | #endif |
| 2003 | |
| 2004 | for (current = abfd->sections, count = 1; |
| 2005 | current != (asection *) NULL; |
| 2006 | current = current->next, ++count) |
| 2007 | { |
| 2008 | current->target_index = count; |
| 2009 | |
| 2010 | /* Only deal with sections which have contents */ |
| 2011 | if (!(current->flags & SEC_HAS_CONTENTS)) |
| 2012 | continue; |
| 2013 | |
| 2014 | #ifdef COFF_WITH_PE |
| 2015 | /* Do not include the .junk section. This is where we collect section |
| 2016 | data which we don't need. This is mainly the MS .debug$ data which |
| 2017 | stores codeview debug data. */ |
| 2018 | if (strcmp (current->name, ".junk") == 0) |
| 2019 | { |
| 2020 | continue; |
| 2021 | } |
| 2022 | #endif |
| 2023 | |
| 2024 | /* Align the sections in the file to the same boundary on |
| 2025 | which they are aligned in virtual memory. I960 doesn't |
| 2026 | do this (FIXME) so we can stay in sync with Intel. 960 |
| 2027 | doesn't yet page from files... */ |
| 2028 | #ifndef I960 |
| 2029 | if ((abfd->flags & EXEC_P) != 0) |
| 2030 | { |
| 2031 | /* make sure this section is aligned on the right boundary - by |
| 2032 | padding the previous section up if necessary */ |
| 2033 | |
| 2034 | old_sofar = sofar; |
| 2035 | sofar = BFD_ALIGN (sofar, 1 << current->alignment_power); |
| 2036 | if (previous != (asection *) NULL) |
| 2037 | { |
| 2038 | previous->_raw_size += sofar - old_sofar; |
| 2039 | } |
| 2040 | } |
| 2041 | |
| 2042 | #endif |
| 2043 | |
| 2044 | /* In demand paged files the low order bits of the file offset |
| 2045 | must match the low order bits of the virtual address. */ |
| 2046 | #ifdef COFF_PAGE_SIZE |
| 2047 | if ((abfd->flags & D_PAGED) != 0 |
| 2048 | && (current->flags & SEC_ALLOC) != 0) |
| 2049 | sofar += (current->vma - sofar) % page_size; |
| 2050 | #endif |
| 2051 | current->filepos = sofar; |
| 2052 | |
| 2053 | #ifdef COFF_IMAGE_WITH_PE |
| 2054 | /* With PE we have to pad each section to be a multiple of its page size |
| 2055 | too, and remember both sizes. Cooked_size becomes very useful. */ |
| 2056 | current->_cooked_size = current->_raw_size; |
| 2057 | current->_raw_size = (current->_raw_size + page_size -1) & -page_size; |
| 2058 | #endif |
| 2059 | |
| 2060 | sofar += current->_raw_size; |
| 2061 | |
| 2062 | #ifndef I960 |
| 2063 | /* make sure that this section is of the right size too */ |
| 2064 | if ((abfd->flags & EXEC_P) == 0) |
| 2065 | current->_raw_size = BFD_ALIGN (current->_raw_size, |
| 2066 | 1 << current->alignment_power); |
| 2067 | else |
| 2068 | { |
| 2069 | old_sofar = sofar; |
| 2070 | sofar = BFD_ALIGN (sofar, 1 << current->alignment_power); |
| 2071 | current->_raw_size += sofar - old_sofar; |
| 2072 | } |
| 2073 | #endif |
| 2074 | |
| 2075 | #ifdef _LIB |
| 2076 | /* Force .lib sections to start at zero. The vma is then |
| 2077 | incremented in coff_set_section_contents. This is right for |
| 2078 | SVR3.2. */ |
| 2079 | if (strcmp (current->name, _LIB) == 0) |
| 2080 | bfd_set_section_vma (abfd, current, 0); |
| 2081 | #endif |
| 2082 | |
| 2083 | previous = current; |
| 2084 | } |
| 2085 | |
| 2086 | obj_relocbase (abfd) = sofar; |
| 2087 | abfd->output_has_begun = true; |
| 2088 | |
| 2089 | } |
| 2090 | |
| 2091 | #if 0 |
| 2092 | |
| 2093 | /* This can never work, because it is called too late--after the |
| 2094 | section positions have been set. I can't figure out what it is |
| 2095 | for, so I am going to disable it--Ian Taylor 20 March 1996. */ |
| 2096 | |
| 2097 | /* If .file, .text, .data, .bss symbols are missing, add them. */ |
| 2098 | /* @@ Should we only be adding missing symbols, or overriding the aux |
| 2099 | values for existing section symbols? */ |
| 2100 | static boolean |
| 2101 | coff_add_missing_symbols (abfd) |
| 2102 | bfd *abfd; |
| 2103 | { |
| 2104 | unsigned int nsyms = bfd_get_symcount (abfd); |
| 2105 | asymbol **sympp = abfd->outsymbols; |
| 2106 | asymbol **sympp2; |
| 2107 | unsigned int i; |
| 2108 | int need_text = 1, need_data = 1, need_bss = 1, need_file = 1; |
| 2109 | |
| 2110 | for (i = 0; i < nsyms; i++) |
| 2111 | { |
| 2112 | coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]); |
| 2113 | CONST char *name; |
| 2114 | if (csym) |
| 2115 | { |
| 2116 | /* only do this if there is a coff representation of the input |
| 2117 | symbol */ |
| 2118 | if (csym->native && csym->native->u.syment.n_sclass == C_FILE) |
| 2119 | { |
| 2120 | need_file = 0; |
| 2121 | continue; |
| 2122 | } |
| 2123 | name = csym->symbol.name; |
| 2124 | if (!name) |
| 2125 | continue; |
| 2126 | if (!strcmp (name, _TEXT)) |
| 2127 | need_text = 0; |
| 2128 | #ifdef APOLLO_M68 |
| 2129 | else if (!strcmp (name, ".wtext")) |
| 2130 | need_text = 0; |
| 2131 | #endif |
| 2132 | else if (!strcmp (name, _DATA)) |
| 2133 | need_data = 0; |
| 2134 | else if (!strcmp (name, _BSS)) |
| 2135 | need_bss = 0; |
| 2136 | } |
| 2137 | } |
| 2138 | /* Now i == bfd_get_symcount (abfd). */ |
| 2139 | /* @@ For now, don't deal with .file symbol. */ |
| 2140 | need_file = 0; |
| 2141 | |
| 2142 | if (!need_text && !need_data && !need_bss && !need_file) |
| 2143 | return true; |
| 2144 | nsyms += need_text + need_data + need_bss + need_file; |
| 2145 | sympp2 = (asymbol **) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *)); |
| 2146 | if (!sympp2) |
| 2147 | return false; |
| 2148 | memcpy (sympp2, sympp, i * sizeof (asymbol *)); |
| 2149 | if (need_file) |
| 2150 | { |
| 2151 | /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */ |
| 2152 | abort (); |
| 2153 | } |
| 2154 | if (need_text) |
| 2155 | sympp2[i++] = coff_section_symbol (abfd, _TEXT); |
| 2156 | if (need_data) |
| 2157 | sympp2[i++] = coff_section_symbol (abfd, _DATA); |
| 2158 | if (need_bss) |
| 2159 | sympp2[i++] = coff_section_symbol (abfd, _BSS); |
| 2160 | BFD_ASSERT (i == nsyms); |
| 2161 | bfd_set_symtab (abfd, sympp2, nsyms); |
| 2162 | return true; |
| 2163 | } |
| 2164 | |
| 2165 | #endif /* 0 */ |
| 2166 | |
| 2167 | /* SUPPRESS 558 */ |
| 2168 | /* SUPPRESS 529 */ |
| 2169 | static boolean |
| 2170 | coff_write_object_contents (abfd) |
| 2171 | bfd * abfd; |
| 2172 | { |
| 2173 | asection *current; |
| 2174 | boolean hasrelocs = false; |
| 2175 | boolean haslinno = false; |
| 2176 | file_ptr scn_base; |
| 2177 | file_ptr reloc_base; |
| 2178 | file_ptr lineno_base; |
| 2179 | file_ptr sym_base; |
| 2180 | unsigned long reloc_size = 0; |
| 2181 | unsigned long lnno_size = 0; |
| 2182 | asection *text_sec = NULL; |
| 2183 | asection *data_sec = NULL; |
| 2184 | asection *bss_sec = NULL; |
| 2185 | |
| 2186 | struct internal_filehdr internal_f; |
| 2187 | struct internal_aouthdr internal_a; |
| 2188 | |
| 2189 | bfd_set_error (bfd_error_system_call); |
| 2190 | |
| 2191 | /* Make a pass through the symbol table to count line number entries and |
| 2192 | put them into the correct asections */ |
| 2193 | |
| 2194 | lnno_size = coff_count_linenumbers (abfd) * LINESZ; |
| 2195 | |
| 2196 | if (abfd->output_has_begun == false) |
| 2197 | coff_compute_section_file_positions (abfd); |
| 2198 | |
| 2199 | reloc_base = obj_relocbase (abfd); |
| 2200 | |
| 2201 | /* Work out the size of the reloc and linno areas */ |
| 2202 | |
| 2203 | for (current = abfd->sections; current != NULL; current = |
| 2204 | current->next) |
| 2205 | reloc_size += current->reloc_count * RELSZ; |
| 2206 | |
| 2207 | lineno_base = reloc_base + reloc_size; |
| 2208 | sym_base = lineno_base + lnno_size; |
| 2209 | |
| 2210 | /* Indicate in each section->line_filepos its actual file address */ |
| 2211 | for (current = abfd->sections; current != NULL; current = |
| 2212 | current->next) |
| 2213 | { |
| 2214 | if (current->lineno_count) |
| 2215 | { |
| 2216 | current->line_filepos = lineno_base; |
| 2217 | current->moving_line_filepos = lineno_base; |
| 2218 | lineno_base += current->lineno_count * LINESZ; |
| 2219 | } |
| 2220 | else |
| 2221 | { |
| 2222 | current->line_filepos = 0; |
| 2223 | } |
| 2224 | if (current->reloc_count) |
| 2225 | { |
| 2226 | current->rel_filepos = reloc_base; |
| 2227 | reloc_base += current->reloc_count * RELSZ; |
| 2228 | } |
| 2229 | else |
| 2230 | { |
| 2231 | current->rel_filepos = 0; |
| 2232 | } |
| 2233 | } |
| 2234 | |
| 2235 | /* Write section headers to the file. */ |
| 2236 | internal_f.f_nscns = 0; |
| 2237 | |
| 2238 | if ((abfd->flags & EXEC_P) != 0) |
| 2239 | scn_base = FILHSZ + AOUTSZ; |
| 2240 | else |
| 2241 | { |
| 2242 | scn_base = FILHSZ; |
| 2243 | #ifdef RS6000COFF_C |
| 2244 | if (xcoff_data (abfd)->full_aouthdr) |
| 2245 | scn_base += AOUTSZ; |
| 2246 | else |
| 2247 | scn_base += SMALL_AOUTSZ; |
| 2248 | #endif |
| 2249 | } |
| 2250 | |
| 2251 | if (bfd_seek (abfd, scn_base, SEEK_SET) != 0) |
| 2252 | return false; |
| 2253 | |
| 2254 | for (current = abfd->sections; |
| 2255 | current != NULL; |
| 2256 | current = current->next) |
| 2257 | { |
| 2258 | struct internal_scnhdr section; |
| 2259 | |
| 2260 | #ifdef COFF_WITH_PE |
| 2261 | /* Do not include the .junk section. This is where we collect section |
| 2262 | data which we don't need. This is mainly the MS .debug$ data which |
| 2263 | stores codeview debug data. */ |
| 2264 | if (strcmp (current->name, ".junk") == 0) |
| 2265 | { |
| 2266 | continue; |
| 2267 | } |
| 2268 | |
| 2269 | /* If we've got a .reloc section, remember. */ |
| 2270 | |
| 2271 | #ifdef COFF_IMAGE_WITH_PE |
| 2272 | if (strcmp (current->name, ".reloc") == 0) |
| 2273 | { |
| 2274 | pe_data (abfd)->has_reloc_section = 1; |
| 2275 | } |
| 2276 | #endif |
| 2277 | |
| 2278 | #endif |
| 2279 | internal_f.f_nscns++; |
| 2280 | strncpy (&(section.s_name[0]), current->name, 8); |
| 2281 | #ifdef _LIB |
| 2282 | /* Always set s_vaddr of .lib to 0. This is right for SVR3.2 |
| 2283 | Ian Taylor <ian@cygnus.com>. */ |
| 2284 | if (strcmp (current->name, _LIB) == 0) |
| 2285 | section.s_vaddr = 0; |
| 2286 | else |
| 2287 | #endif |
| 2288 | section.s_vaddr = current->vma; |
| 2289 | section.s_paddr = current->lma; |
| 2290 | section.s_size = current->_raw_size; |
| 2291 | |
| 2292 | #ifdef COFF_WITH_PE |
| 2293 | section.s_paddr = current->_cooked_size; |
| 2294 | #endif |
| 2295 | |
| 2296 | /* |
| 2297 | If this section has no size or is unloadable then the scnptr |
| 2298 | will be 0 too |
| 2299 | */ |
| 2300 | if (current->_raw_size == 0 || |
| 2301 | (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
| 2302 | { |
| 2303 | section.s_scnptr = 0; |
| 2304 | } |
| 2305 | else |
| 2306 | { |
| 2307 | section.s_scnptr = current->filepos; |
| 2308 | } |
| 2309 | section.s_relptr = current->rel_filepos; |
| 2310 | section.s_lnnoptr = current->line_filepos; |
| 2311 | section.s_nreloc = current->reloc_count; |
| 2312 | section.s_nlnno = current->lineno_count; |
| 2313 | if (current->reloc_count != 0) |
| 2314 | hasrelocs = true; |
| 2315 | if (current->lineno_count != 0) |
| 2316 | haslinno = true; |
| 2317 | |
| 2318 | #ifdef RS6000COFF_C |
| 2319 | /* Indicate the use of an XCOFF overflow section header. */ |
| 2320 | if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
| 2321 | { |
| 2322 | section.s_nreloc = 0xffff; |
| 2323 | section.s_nlnno = 0xffff; |
| 2324 | } |
| 2325 | #endif |
| 2326 | |
| 2327 | section.s_flags = sec_to_styp_flags (current->name, current->flags); |
| 2328 | |
| 2329 | if (!strcmp (current->name, _TEXT)) |
| 2330 | { |
| 2331 | text_sec = current; |
| 2332 | } |
| 2333 | else if (!strcmp (current->name, _DATA)) |
| 2334 | { |
| 2335 | data_sec = current; |
| 2336 | } |
| 2337 | else if (!strcmp (current->name, _BSS)) |
| 2338 | { |
| 2339 | bss_sec = current; |
| 2340 | } |
| 2341 | |
| 2342 | #ifdef I960 |
| 2343 | section.s_align = (current->alignment_power |
| 2344 | ? 1 << current->alignment_power |
| 2345 | : 0); |
| 2346 | |
| 2347 | #endif |
| 2348 | |
| 2349 | #ifdef COFF_IMAGE_WITH_PE |
| 2350 | /* suppress output of the sections if they are null. ld includes |
| 2351 | the bss and data sections even if there is no size assigned |
| 2352 | to them. NT loader doesn't like it if these section headers are |
| 2353 | included if the sections themselves are not needed */ |
| 2354 | if (section.s_size == 0) |
| 2355 | internal_f.f_nscns--; |
| 2356 | else |
| 2357 | #endif |
| 2358 | { |
| 2359 | SCNHDR buff; |
| 2360 | if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0 |
| 2361 | || bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ) |
| 2362 | return false; |
| 2363 | } |
| 2364 | } |
| 2365 | |
| 2366 | #ifdef RS6000COFF_C |
| 2367 | /* XCOFF handles overflows in the reloc and line number count fields |
| 2368 | by creating a new section header to hold the correct values. */ |
| 2369 | for (current = abfd->sections; current != NULL; current = current->next) |
| 2370 | { |
| 2371 | if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
| 2372 | { |
| 2373 | struct internal_scnhdr scnhdr; |
| 2374 | SCNHDR buff; |
| 2375 | |
| 2376 | internal_f.f_nscns++; |
| 2377 | strncpy (&(scnhdr.s_name[0]), current->name, 8); |
| 2378 | scnhdr.s_paddr = current->reloc_count; |
| 2379 | scnhdr.s_vaddr = current->lineno_count; |
| 2380 | scnhdr.s_size = 0; |
| 2381 | scnhdr.s_scnptr = 0; |
| 2382 | scnhdr.s_relptr = current->rel_filepos; |
| 2383 | scnhdr.s_lnnoptr = current->line_filepos; |
| 2384 | scnhdr.s_nreloc = current->target_index; |
| 2385 | scnhdr.s_nlnno = current->target_index; |
| 2386 | scnhdr.s_flags = STYP_OVRFLO; |
| 2387 | if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0 |
| 2388 | || bfd_write ((PTR) &buff, 1, SCNHSZ, abfd) != SCNHSZ) |
| 2389 | return false; |
| 2390 | } |
| 2391 | } |
| 2392 | #endif |
| 2393 | |
| 2394 | /* OK, now set up the filehdr... */ |
| 2395 | |
| 2396 | /* Don't include the internal abs section in the section count */ |
| 2397 | |
| 2398 | /* |
| 2399 | We will NOT put a fucking timestamp in the header here. Every time you |
| 2400 | put it back, I will come in and take it out again. I'm sorry. This |
| 2401 | field does not belong here. We fill it with a 0 so it compares the |
| 2402 | same but is not a reasonable time. -- gnu@cygnus.com |
| 2403 | */ |
| 2404 | internal_f.f_timdat = 0; |
| 2405 | |
| 2406 | internal_f.f_flags = 0; |
| 2407 | |
| 2408 | if (abfd->flags & EXEC_P) |
| 2409 | internal_f.f_opthdr = AOUTSZ; |
| 2410 | else |
| 2411 | { |
| 2412 | internal_f.f_opthdr = 0; |
| 2413 | #ifdef RS6000COFF_C |
| 2414 | if (xcoff_data (abfd)->full_aouthdr) |
| 2415 | internal_f.f_opthdr = AOUTSZ; |
| 2416 | else |
| 2417 | internal_f.f_opthdr = SMALL_AOUTSZ; |
| 2418 | #endif |
| 2419 | } |
| 2420 | |
| 2421 | if (!hasrelocs) |
| 2422 | internal_f.f_flags |= F_RELFLG; |
| 2423 | if (!haslinno) |
| 2424 | internal_f.f_flags |= F_LNNO; |
| 2425 | if (abfd->flags & EXEC_P) |
| 2426 | internal_f.f_flags |= F_EXEC; |
| 2427 | |
| 2428 | /* FIXME: this is wrong for PPC_PE! */ |
| 2429 | if (bfd_little_endian (abfd)) |
| 2430 | internal_f.f_flags |= F_AR32WR; |
| 2431 | else |
| 2432 | internal_f.f_flags |= F_AR32W; |
| 2433 | |
| 2434 | /* |
| 2435 | FIXME, should do something about the other byte orders and |
| 2436 | architectures. |
| 2437 | */ |
| 2438 | |
| 2439 | #ifdef RS6000COFF_C |
| 2440 | if ((abfd->flags & DYNAMIC) != 0) |
| 2441 | internal_f.f_flags |= F_SHROBJ; |
| 2442 | if (bfd_get_section_by_name (abfd, _LOADER) != NULL) |
| 2443 | internal_f.f_flags |= F_DYNLOAD; |
| 2444 | #endif |
| 2445 | |
| 2446 | memset (&internal_a, 0, sizeof internal_a); |
| 2447 | |
| 2448 | /* Set up architecture-dependent stuff */ |
| 2449 | |
| 2450 | { |
| 2451 | unsigned int magic = 0; |
| 2452 | unsigned short flags = 0; |
| 2453 | coff_set_flags (abfd, &magic, &flags); |
| 2454 | internal_f.f_magic = magic; |
| 2455 | internal_f.f_flags |= flags; |
| 2456 | /* ...and the "opt"hdr... */ |
| 2457 | |
| 2458 | #ifdef A29K |
| 2459 | #ifdef ULTRA3 /* NYU's machine */ |
| 2460 | /* FIXME: This is a bogus check. I really want to see if there |
| 2461 | * is a .shbss or a .shdata section, if so then set the magic |
| 2462 | * number to indicate a shared data executable. |
| 2463 | */ |
| 2464 | if (internal_f.f_nscns >= 7) |
| 2465 | internal_a.magic = SHMAGIC; /* Shared magic */ |
| 2466 | else |
| 2467 | #endif /* ULTRA3 */ |
| 2468 | internal_a.magic = NMAGIC; /* Assume separate i/d */ |
| 2469 | #define __A_MAGIC_SET__ |
| 2470 | #endif /* A29K */ |
| 2471 | #ifdef I860 |
| 2472 | /* FIXME: What are the a.out magic numbers for the i860? */ |
| 2473 | internal_a.magic = 0; |
| 2474 | #define __A_MAGIC_SET__ |
| 2475 | #endif /* I860 */ |
| 2476 | #ifdef I960 |
| 2477 | internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC); |
| 2478 | #define __A_MAGIC_SET__ |
| 2479 | #endif /* I960 */ |
| 2480 | #if M88 |
| 2481 | #define __A_MAGIC_SET__ |
| 2482 | internal_a.magic = PAGEMAGICBCS; |
| 2483 | #endif /* M88 */ |
| 2484 | |
| 2485 | #if APOLLO_M68 |
| 2486 | #define __A_MAGIC_SET__ |
| 2487 | internal_a.magic = APOLLO_COFF_VERSION_NUMBER; |
| 2488 | #endif |
| 2489 | |
| 2490 | #if defined(M68) || defined(WE32K) || defined(M68K) |
| 2491 | #define __A_MAGIC_SET__ |
| 2492 | #if defined(LYNXOS) |
| 2493 | internal_a.magic = LYNXCOFFMAGIC; |
| 2494 | #else |
| 2495 | #if defined(TARG_AUX) |
| 2496 | internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED : |
| 2497 | abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED : |
| 2498 | PAGEMAGICEXECSWAPPED); |
| 2499 | #else |
| 2500 | #if defined (PAGEMAGICPEXECPAGED) |
| 2501 | internal_a.magic = PAGEMAGICPEXECPAGED; |
| 2502 | #endif |
| 2503 | #endif /* TARG_AUX */ |
| 2504 | #endif /* LYNXOS */ |
| 2505 | #endif /* M68 || WE32K || M68K */ |
| 2506 | |
| 2507 | #if defined(ARM) |
| 2508 | #define __A_MAGIC_SET__ |
| 2509 | internal_a.magic = ZMAGIC; |
| 2510 | #endif |
| 2511 | #if defined(PPC) |
| 2512 | #define __A_MAGIC_SET__ |
| 2513 | internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC; |
| 2514 | #endif |
| 2515 | #if defined(I386) |
| 2516 | #define __A_MAGIC_SET__ |
| 2517 | #if defined(LYNXOS) |
| 2518 | internal_a.magic = LYNXCOFFMAGIC; |
| 2519 | #else /* LYNXOS */ |
| 2520 | internal_a.magic = ZMAGIC; |
| 2521 | #endif /* LYNXOS */ |
| 2522 | #endif /* I386 */ |
| 2523 | |
| 2524 | #if defined(SPARC) |
| 2525 | #define __A_MAGIC_SET__ |
| 2526 | #if defined(LYNXOS) |
| 2527 | internal_a.magic = LYNXCOFFMAGIC; |
| 2528 | #endif /* LYNXOS */ |
| 2529 | #endif /* SPARC */ |
| 2530 | |
| 2531 | #if RS6000COFF_C |
| 2532 | #define __A_MAGIC_SET__ |
| 2533 | internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC : |
| 2534 | (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC : |
| 2535 | RS6K_AOUTHDR_OMAGIC; |
| 2536 | #endif |
| 2537 | |
| 2538 | #ifndef __A_MAGIC_SET__ |
| 2539 | #include "Your aouthdr magic number is not being set!" |
| 2540 | #else |
| 2541 | #undef __A_MAGIC_SET__ |
| 2542 | #endif |
| 2543 | } |
| 2544 | |
| 2545 | /* FIXME: Does anybody ever set this to another value? */ |
| 2546 | internal_a.vstamp = 0; |
| 2547 | |
| 2548 | /* Now should write relocs, strings, syms */ |
| 2549 | obj_sym_filepos (abfd) = sym_base; |
| 2550 | |
| 2551 | if (bfd_get_symcount (abfd) != 0) |
| 2552 | { |
| 2553 | int firstundef; |
| 2554 | #if 0 |
| 2555 | if (!coff_add_missing_symbols (abfd)) |
| 2556 | return false; |
| 2557 | #endif |
| 2558 | if (!coff_renumber_symbols (abfd, &firstundef)) |
| 2559 | return false; |
| 2560 | coff_mangle_symbols (abfd); |
| 2561 | if (! coff_write_symbols (abfd)) |
| 2562 | return false; |
| 2563 | if (! coff_write_linenumbers (abfd)) |
| 2564 | return false; |
| 2565 | if (! coff_write_relocs (abfd, firstundef)) |
| 2566 | return false; |
| 2567 | } |
| 2568 | #ifdef COFF_IMAGE_WITH_PE |
| 2569 | #ifdef PPC |
| 2570 | else if ((abfd->flags & EXEC_P) != 0) |
| 2571 | { |
| 2572 | bfd_byte b; |
| 2573 | |
| 2574 | /* PowerPC PE appears to require that all executable files be |
| 2575 | rounded up to the page size. */ |
| 2576 | b = 0; |
| 2577 | if (bfd_seek (abfd, |
| 2578 | BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1, |
| 2579 | SEEK_SET) != 0 |
| 2580 | || bfd_write (&b, 1, 1, abfd) != 1) |
| 2581 | return false; |
| 2582 | } |
| 2583 | #endif |
| 2584 | #endif |
| 2585 | |
| 2586 | /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF |
| 2587 | backend linker, and obj_raw_syment_count is not valid until after |
| 2588 | coff_write_symbols is called. */ |
| 2589 | if (obj_raw_syment_count (abfd) != 0) |
| 2590 | { |
| 2591 | internal_f.f_symptr = sym_base; |
| 2592 | #ifdef RS6000COFF_C |
| 2593 | /* AIX appears to require that F_RELFLG not be set if there are |
| 2594 | local symbols but no relocations. */ |
| 2595 | internal_f.f_flags &=~ F_RELFLG; |
| 2596 | #endif |
| 2597 | } |
| 2598 | else |
| 2599 | { |
| 2600 | internal_f.f_symptr = 0; |
| 2601 | internal_f.f_flags |= F_LSYMS; |
| 2602 | } |
| 2603 | |
| 2604 | if (text_sec) |
| 2605 | { |
| 2606 | internal_a.tsize = bfd_get_section_size_before_reloc (text_sec); |
| 2607 | internal_a.text_start = internal_a.tsize ? text_sec->vma : 0; |
| 2608 | } |
| 2609 | if (data_sec) |
| 2610 | { |
| 2611 | internal_a.dsize = bfd_get_section_size_before_reloc (data_sec); |
| 2612 | internal_a.data_start = internal_a.dsize ? data_sec->vma : 0; |
| 2613 | } |
| 2614 | if (bss_sec) |
| 2615 | { |
| 2616 | internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec); |
| 2617 | if (internal_a.bsize && bss_sec->vma < internal_a.data_start) |
| 2618 | internal_a.data_start = bss_sec->vma; |
| 2619 | } |
| 2620 | |
| 2621 | internal_a.entry = bfd_get_start_address (abfd); |
| 2622 | internal_f.f_nsyms = obj_raw_syment_count (abfd); |
| 2623 | |
| 2624 | #ifdef RS6000COFF_C |
| 2625 | if (xcoff_data (abfd)->full_aouthdr) |
| 2626 | { |
| 2627 | bfd_vma toc; |
| 2628 | asection *loader_sec; |
| 2629 | |
| 2630 | internal_a.vstamp = 1; |
| 2631 | |
| 2632 | internal_a.o_snentry = xcoff_data (abfd)->snentry; |
| 2633 | if (internal_a.o_snentry == 0) |
| 2634 | internal_a.entry = (bfd_vma) -1; |
| 2635 | |
| 2636 | if (text_sec != NULL) |
| 2637 | { |
| 2638 | internal_a.o_sntext = text_sec->target_index; |
| 2639 | internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec); |
| 2640 | } |
| 2641 | else |
| 2642 | { |
| 2643 | internal_a.o_sntext = 0; |
| 2644 | internal_a.o_algntext = 0; |
| 2645 | } |
| 2646 | if (data_sec != NULL) |
| 2647 | { |
| 2648 | internal_a.o_sndata = data_sec->target_index; |
| 2649 | internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec); |
| 2650 | } |
| 2651 | else |
| 2652 | { |
| 2653 | internal_a.o_sndata = 0; |
| 2654 | internal_a.o_algndata = 0; |
| 2655 | } |
| 2656 | loader_sec = bfd_get_section_by_name (abfd, ".loader"); |
| 2657 | if (loader_sec != NULL) |
| 2658 | internal_a.o_snloader = loader_sec->target_index; |
| 2659 | else |
| 2660 | internal_a.o_snloader = 0; |
| 2661 | if (bss_sec != NULL) |
| 2662 | internal_a.o_snbss = bss_sec->target_index; |
| 2663 | else |
| 2664 | internal_a.o_snbss = 0; |
| 2665 | |
| 2666 | toc = xcoff_data (abfd)->toc; |
| 2667 | internal_a.o_toc = toc; |
| 2668 | internal_a.o_sntoc = xcoff_data (abfd)->sntoc; |
| 2669 | |
| 2670 | internal_a.o_modtype = xcoff_data (abfd)->modtype; |
| 2671 | if (xcoff_data (abfd)->cputype != -1) |
| 2672 | internal_a.o_cputype = xcoff_data (abfd)->cputype; |
| 2673 | else |
| 2674 | { |
| 2675 | switch (bfd_get_arch (abfd)) |
| 2676 | { |
| 2677 | case bfd_arch_rs6000: |
| 2678 | internal_a.o_cputype = 4; |
| 2679 | break; |
| 2680 | case bfd_arch_powerpc: |
| 2681 | if (bfd_get_mach (abfd) == 0) |
| 2682 | internal_a.o_cputype = 3; |
| 2683 | else |
| 2684 | internal_a.o_cputype = 1; |
| 2685 | break; |
| 2686 | default: |
| 2687 | abort (); |
| 2688 | } |
| 2689 | } |
| 2690 | internal_a.o_maxstack = xcoff_data (abfd)->maxstack; |
| 2691 | internal_a.o_maxdata = xcoff_data (abfd)->maxdata; |
| 2692 | } |
| 2693 | #endif |
| 2694 | |
| 2695 | /* now write them */ |
| 2696 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 2697 | return false; |
| 2698 | { |
| 2699 | char buff[FILHSZ]; |
| 2700 | coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) & buff); |
| 2701 | if (bfd_write ((PTR) & buff, 1, FILHSZ, abfd) != FILHSZ) |
| 2702 | return false; |
| 2703 | } |
| 2704 | if (abfd->flags & EXEC_P) |
| 2705 | { |
| 2706 | /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR. |
| 2707 | include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */ |
| 2708 | char buff[AOUTSZ]; |
| 2709 | coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) & buff); |
| 2710 | if (bfd_write ((PTR) & buff, 1, AOUTSZ, abfd) != AOUTSZ) |
| 2711 | return false; |
| 2712 | } |
| 2713 | #ifdef RS6000COFF_C |
| 2714 | else |
| 2715 | { |
| 2716 | AOUTHDR buff; |
| 2717 | size_t size; |
| 2718 | |
| 2719 | /* XCOFF seems to always write at least a small a.out header. */ |
| 2720 | coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff); |
| 2721 | if (xcoff_data (abfd)->full_aouthdr) |
| 2722 | size = AOUTSZ; |
| 2723 | else |
| 2724 | size = SMALL_AOUTSZ; |
| 2725 | if (bfd_write ((PTR) &buff, 1, size, abfd) != size) |
| 2726 | return false; |
| 2727 | } |
| 2728 | #endif |
| 2729 | |
| 2730 | return true; |
| 2731 | } |
| 2732 | |
| 2733 | static boolean |
| 2734 | coff_set_section_contents (abfd, section, location, offset, count) |
| 2735 | bfd * abfd; |
| 2736 | sec_ptr section; |
| 2737 | PTR location; |
| 2738 | file_ptr offset; |
| 2739 | bfd_size_type count; |
| 2740 | { |
| 2741 | if (abfd->output_has_begun == false) /* set by bfd.c handler */ |
| 2742 | coff_compute_section_file_positions (abfd); |
| 2743 | |
| 2744 | #ifdef _LIB |
| 2745 | |
| 2746 | /* The physical address field of a .lib section is used to hold the |
| 2747 | number of shared libraries in the section. This code counts the |
| 2748 | number of sections being written, and increments the lma field |
| 2749 | with the number. |
| 2750 | |
| 2751 | I have found no documentation on the contents of this section. |
| 2752 | Experimentation indicates that the section contains zero or more |
| 2753 | records, each of which has the following structure: |
| 2754 | |
| 2755 | - a (four byte) word holding the length of this record, in words, |
| 2756 | - a word that always seems to be set to "2", |
| 2757 | - the path to a shared library, null-terminated and then padded |
| 2758 | to a whole word boundary. |
| 2759 | |
| 2760 | bfd_assert calls have been added to alert if an attempt is made |
| 2761 | to write a section which doesn't follow these assumptions. The |
| 2762 | code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe |
| 2763 | <robertl@arnet.com> (Thanks!). |
| 2764 | |
| 2765 | Gvran Uddeborg <gvran@uddeborg.pp.se> */ |
| 2766 | |
| 2767 | if (strcmp (section->name, _LIB) == 0) |
| 2768 | { |
| 2769 | bfd_byte *rec, *recend; |
| 2770 | |
| 2771 | rec = (bfd_byte *) location; |
| 2772 | recend = rec + count; |
| 2773 | while (rec < recend) |
| 2774 | { |
| 2775 | ++section->lma; |
| 2776 | rec += bfd_get_32 (abfd, rec) * 4; |
| 2777 | } |
| 2778 | |
| 2779 | BFD_ASSERT (rec == recend); |
| 2780 | } |
| 2781 | |
| 2782 | #endif |
| 2783 | |
| 2784 | /* Don't write out bss sections - one way to do this is to |
| 2785 | see if the filepos has not been set. */ |
| 2786 | if (section->filepos == 0) |
| 2787 | return true; |
| 2788 | |
| 2789 | if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0) |
| 2790 | return false; |
| 2791 | |
| 2792 | if (count != 0) |
| 2793 | { |
| 2794 | return (bfd_write (location, 1, count, abfd) == count) ? true : false; |
| 2795 | } |
| 2796 | return true; |
| 2797 | } |
| 2798 | #if 0 |
| 2799 | static boolean |
| 2800 | coff_close_and_cleanup (abfd) |
| 2801 | bfd *abfd; |
| 2802 | { |
| 2803 | if (!bfd_read_p (abfd)) |
| 2804 | switch (abfd->format) |
| 2805 | { |
| 2806 | case bfd_archive: |
| 2807 | if (!_bfd_write_archive_contents (abfd)) |
| 2808 | return false; |
| 2809 | break; |
| 2810 | case bfd_object: |
| 2811 | if (!coff_write_object_contents (abfd)) |
| 2812 | return false; |
| 2813 | break; |
| 2814 | default: |
| 2815 | bfd_set_error (bfd_error_invalid_operation); |
| 2816 | return false; |
| 2817 | } |
| 2818 | |
| 2819 | /* We depend on bfd_close to free all the memory on the obstack. */ |
| 2820 | /* FIXME if bfd_release is not using obstacks! */ |
| 2821 | return true; |
| 2822 | } |
| 2823 | |
| 2824 | #endif |
| 2825 | |
| 2826 | static PTR |
| 2827 | buy_and_read (abfd, where, seek_direction, size) |
| 2828 | bfd *abfd; |
| 2829 | file_ptr where; |
| 2830 | int seek_direction; |
| 2831 | size_t size; |
| 2832 | { |
| 2833 | PTR area = (PTR) bfd_alloc (abfd, size); |
| 2834 | if (!area) |
| 2835 | return (NULL); |
| 2836 | if (bfd_seek (abfd, where, seek_direction) != 0 |
| 2837 | || bfd_read (area, 1, size, abfd) != size) |
| 2838 | return (NULL); |
| 2839 | return (area); |
| 2840 | } /* buy_and_read() */ |
| 2841 | |
| 2842 | /* |
| 2843 | SUBSUBSECTION |
| 2844 | Reading linenumbers |
| 2845 | |
| 2846 | Creating the linenumber table is done by reading in the entire |
| 2847 | coff linenumber table, and creating another table for internal use. |
| 2848 | |
| 2849 | A coff linenumber table is structured so that each function |
| 2850 | is marked as having a line number of 0. Each line within the |
| 2851 | function is an offset from the first line in the function. The |
| 2852 | base of the line number information for the table is stored in |
| 2853 | the symbol associated with the function. |
| 2854 | |
| 2855 | The information is copied from the external to the internal |
| 2856 | table, and each symbol which marks a function is marked by |
| 2857 | pointing its... |
| 2858 | |
| 2859 | How does this work ? |
| 2860 | |
| 2861 | */ |
| 2862 | |
| 2863 | static boolean |
| 2864 | coff_slurp_line_table (abfd, asect) |
| 2865 | bfd *abfd; |
| 2866 | asection *asect; |
| 2867 | { |
| 2868 | LINENO *native_lineno; |
| 2869 | alent *lineno_cache; |
| 2870 | |
| 2871 | BFD_ASSERT (asect->lineno == (alent *) NULL); |
| 2872 | |
| 2873 | native_lineno = (LINENO *) buy_and_read (abfd, |
| 2874 | asect->line_filepos, |
| 2875 | SEEK_SET, |
| 2876 | (size_t) (LINESZ * |
| 2877 | asect->lineno_count)); |
| 2878 | lineno_cache = |
| 2879 | (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent))); |
| 2880 | if (lineno_cache == NULL) |
| 2881 | return false; |
| 2882 | else |
| 2883 | { |
| 2884 | unsigned int counter = 0; |
| 2885 | alent *cache_ptr = lineno_cache; |
| 2886 | LINENO *src = native_lineno; |
| 2887 | |
| 2888 | while (counter < asect->lineno_count) |
| 2889 | { |
| 2890 | struct internal_lineno dst; |
| 2891 | coff_swap_lineno_in (abfd, src, &dst); |
| 2892 | cache_ptr->line_number = dst.l_lnno; |
| 2893 | |
| 2894 | if (cache_ptr->line_number == 0) |
| 2895 | { |
| 2896 | coff_symbol_type *sym = |
| 2897 | (coff_symbol_type *) (dst.l_addr.l_symndx |
| 2898 | + obj_raw_syments (abfd))->u.syment._n._n_n._n_zeroes; |
| 2899 | cache_ptr->u.sym = (asymbol *) sym; |
| 2900 | if (sym->lineno != NULL) |
| 2901 | { |
| 2902 | (*_bfd_error_handler) |
| 2903 | ("%s: warning: duplicate line number information for `%s'", |
| 2904 | bfd_get_filename (abfd), |
| 2905 | bfd_asymbol_name (&sym->symbol)); |
| 2906 | } |
| 2907 | sym->lineno = cache_ptr; |
| 2908 | } |
| 2909 | else |
| 2910 | { |
| 2911 | cache_ptr->u.offset = dst.l_addr.l_paddr |
| 2912 | - bfd_section_vma (abfd, asect); |
| 2913 | } /* If no linenumber expect a symbol index */ |
| 2914 | |
| 2915 | cache_ptr++; |
| 2916 | src++; |
| 2917 | counter++; |
| 2918 | } |
| 2919 | cache_ptr->line_number = 0; |
| 2920 | |
| 2921 | } |
| 2922 | asect->lineno = lineno_cache; |
| 2923 | /* FIXME, free native_lineno here, or use alloca or something. */ |
| 2924 | return true; |
| 2925 | } |
| 2926 | |
| 2927 | static boolean |
| 2928 | coff_slurp_symbol_table (abfd) |
| 2929 | bfd * abfd; |
| 2930 | { |
| 2931 | combined_entry_type *native_symbols; |
| 2932 | coff_symbol_type *cached_area; |
| 2933 | unsigned int *table_ptr; |
| 2934 | |
| 2935 | unsigned int number_of_symbols = 0; |
| 2936 | |
| 2937 | if (obj_symbols (abfd)) |
| 2938 | return true; |
| 2939 | |
| 2940 | /* Read in the symbol table */ |
| 2941 | if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL) |
| 2942 | { |
| 2943 | return (false); |
| 2944 | } /* on error */ |
| 2945 | |
| 2946 | /* Allocate enough room for all the symbols in cached form */ |
| 2947 | cached_area = ((coff_symbol_type *) |
| 2948 | bfd_alloc (abfd, |
| 2949 | (obj_raw_syment_count (abfd) |
| 2950 | * sizeof (coff_symbol_type)))); |
| 2951 | |
| 2952 | if (cached_area == NULL) |
| 2953 | return false; |
| 2954 | table_ptr = ((unsigned int *) |
| 2955 | bfd_alloc (abfd, |
| 2956 | (obj_raw_syment_count (abfd) |
| 2957 | * sizeof (unsigned int)))); |
| 2958 | |
| 2959 | if (table_ptr == NULL) |
| 2960 | return false; |
| 2961 | else |
| 2962 | { |
| 2963 | coff_symbol_type *dst = cached_area; |
| 2964 | unsigned int last_native_index = obj_raw_syment_count (abfd); |
| 2965 | unsigned int this_index = 0; |
| 2966 | while (this_index < last_native_index) |
| 2967 | { |
| 2968 | combined_entry_type *src = native_symbols + this_index; |
| 2969 | table_ptr[this_index] = number_of_symbols; |
| 2970 | dst->symbol.the_bfd = abfd; |
| 2971 | |
| 2972 | dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset); |
| 2973 | /* We use the native name field to point to the cached field. */ |
| 2974 | src->u.syment._n._n_n._n_zeroes = (long) dst; |
| 2975 | dst->symbol.section = coff_section_from_bfd_index (abfd, |
| 2976 | src->u.syment.n_scnum); |
| 2977 | dst->symbol.flags = 0; |
| 2978 | dst->done_lineno = false; |
| 2979 | |
| 2980 | switch (src->u.syment.n_sclass) |
| 2981 | { |
| 2982 | #ifdef I960 |
| 2983 | case C_LEAFEXT: |
| 2984 | #if 0 |
| 2985 | dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma; |
| 2986 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; |
| 2987 | dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION; |
| 2988 | #endif |
| 2989 | /* Fall through to next case */ |
| 2990 | |
| 2991 | #endif |
| 2992 | |
| 2993 | case C_EXT: |
| 2994 | #ifdef RS6000COFF_C |
| 2995 | case C_HIDEXT: |
| 2996 | #endif |
| 2997 | #ifdef COFF_WITH_PE |
| 2998 | /* PE uses storage class 0x68 to denote a section symbol */ |
| 2999 | case C_SECTION: |
| 3000 | /* PE uses storage class 0x67 for a weak external symbol. */ |
| 3001 | case C_NT_WEAK: |
| 3002 | #endif |
| 3003 | if ((src->u.syment.n_scnum) == 0) |
| 3004 | { |
| 3005 | if ((src->u.syment.n_value) == 0) |
| 3006 | { |
| 3007 | dst->symbol.section = bfd_und_section_ptr; |
| 3008 | dst->symbol.value = 0; |
| 3009 | } |
| 3010 | else |
| 3011 | { |
| 3012 | dst->symbol.section = bfd_com_section_ptr; |
| 3013 | dst->symbol.value = (src->u.syment.n_value); |
| 3014 | } |
| 3015 | } |
| 3016 | else |
| 3017 | { |
| 3018 | /* Base the value as an index from the base of the |
| 3019 | section */ |
| 3020 | |
| 3021 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; |
| 3022 | dst->symbol.value = (src->u.syment.n_value |
| 3023 | - dst->symbol.section->vma); |
| 3024 | |
| 3025 | if (ISFCN ((src->u.syment.n_type))) |
| 3026 | { |
| 3027 | /* A function ext does not go at the end of a |
| 3028 | file. */ |
| 3029 | dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION; |
| 3030 | } |
| 3031 | } |
| 3032 | |
| 3033 | #ifdef RS6000COFF_C |
| 3034 | /* A C_HIDEXT symbol is not global. */ |
| 3035 | if (src->u.syment.n_sclass == C_HIDEXT) |
| 3036 | dst->symbol.flags = BSF_LOCAL; |
| 3037 | /* A symbol with a csect entry should not go at the end. */ |
| 3038 | if (src->u.syment.n_numaux > 0) |
| 3039 | dst->symbol.flags |= BSF_NOT_AT_END; |
| 3040 | #endif |
| 3041 | |
| 3042 | #ifdef COFF_WITH_PE |
| 3043 | if (src->u.syment.n_sclass == C_NT_WEAK) |
| 3044 | dst->symbol.flags = BSF_WEAK; |
| 3045 | #endif |
| 3046 | |
| 3047 | break; |
| 3048 | |
| 3049 | case C_STAT: /* static */ |
| 3050 | #ifdef I960 |
| 3051 | case C_LEAFSTAT: /* static leaf procedure */ |
| 3052 | #endif |
| 3053 | case C_LABEL: /* label */ |
| 3054 | if (src->u.syment.n_scnum == -2) |
| 3055 | dst->symbol.flags = BSF_DEBUGGING; |
| 3056 | else |
| 3057 | dst->symbol.flags = BSF_LOCAL; |
| 3058 | /* |
| 3059 | Base the value as an index from the base of the section, if |
| 3060 | there is one |
| 3061 | */ |
| 3062 | if (dst->symbol.section) |
| 3063 | dst->symbol.value = (src->u.syment.n_value) - |
| 3064 | dst->symbol.section->vma; |
| 3065 | else |
| 3066 | dst->symbol.value = (src->u.syment.n_value); |
| 3067 | break; |
| 3068 | |
| 3069 | case C_MOS: /* member of structure */ |
| 3070 | case C_EOS: /* end of structure */ |
| 3071 | #ifdef NOTDEF /* C_AUTOARG has the same value */ |
| 3072 | #ifdef C_GLBLREG |
| 3073 | case C_GLBLREG: /* A29k-specific storage class */ |
| 3074 | #endif |
| 3075 | #endif |
| 3076 | case C_REGPARM: /* register parameter */ |
| 3077 | case C_REG: /* register variable */ |
| 3078 | #ifdef C_AUTOARG |
| 3079 | case C_AUTOARG: /* 960-specific storage class */ |
| 3080 | #endif |
| 3081 | case C_TPDEF: /* type definition */ |
| 3082 | case C_ARG: |
| 3083 | case C_AUTO: /* automatic variable */ |
| 3084 | case C_FIELD: /* bit field */ |
| 3085 | case C_ENTAG: /* enumeration tag */ |
| 3086 | case C_MOE: /* member of enumeration */ |
| 3087 | case C_MOU: /* member of union */ |
| 3088 | case C_UNTAG: /* union tag */ |
| 3089 | dst->symbol.flags = BSF_DEBUGGING; |
| 3090 | dst->symbol.value = (src->u.syment.n_value); |
| 3091 | break; |
| 3092 | |
| 3093 | case C_FILE: /* file name */ |
| 3094 | case C_STRTAG: /* structure tag */ |
| 3095 | #ifdef RS6000COFF_C |
| 3096 | case C_GSYM: |
| 3097 | case C_LSYM: |
| 3098 | case C_PSYM: |
| 3099 | case C_RSYM: |
| 3100 | case C_RPSYM: |
| 3101 | case C_STSYM: |
| 3102 | case C_BCOMM: |
| 3103 | case C_ECOMM: |
| 3104 | case C_DECL: |
| 3105 | case C_ENTRY: |
| 3106 | case C_FUN: |
| 3107 | case C_ESTAT: |
| 3108 | #endif |
| 3109 | dst->symbol.flags = BSF_DEBUGGING; |
| 3110 | dst->symbol.value = (src->u.syment.n_value); |
| 3111 | break; |
| 3112 | |
| 3113 | #ifdef RS6000COFF_C |
| 3114 | case C_BINCL: /* beginning of include file */ |
| 3115 | case C_EINCL: /* ending of include file */ |
| 3116 | /* The value is actually a pointer into the line numbers |
| 3117 | of the file. We locate the line number entry, and |
| 3118 | set the section to the section which contains it, and |
| 3119 | the value to the index in that section. */ |
| 3120 | { |
| 3121 | asection *sec; |
| 3122 | |
| 3123 | dst->symbol.flags = BSF_DEBUGGING; |
| 3124 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 3125 | if (sec->line_filepos <= (file_ptr) src->u.syment.n_value |
| 3126 | && ((file_ptr) (sec->line_filepos |
| 3127 | + sec->lineno_count * LINESZ) |
| 3128 | > (file_ptr) src->u.syment.n_value)) |
| 3129 | break; |
| 3130 | if (sec == NULL) |
| 3131 | dst->symbol.value = 0; |
| 3132 | else |
| 3133 | { |
| 3134 | dst->symbol.section = sec; |
| 3135 | dst->symbol.value = ((src->u.syment.n_value |
| 3136 | - sec->line_filepos) |
| 3137 | / LINESZ); |
| 3138 | src->fix_line = 1; |
| 3139 | } |
| 3140 | } |
| 3141 | break; |
| 3142 | |
| 3143 | case C_BSTAT: |
| 3144 | dst->symbol.flags = BSF_DEBUGGING; |
| 3145 | |
| 3146 | /* The value is actually a symbol index. Save a pointer |
| 3147 | to the symbol instead of the index. FIXME: This |
| 3148 | should use a union. */ |
| 3149 | src->u.syment.n_value = |
| 3150 | (long) (native_symbols + src->u.syment.n_value); |
| 3151 | dst->symbol.value = src->u.syment.n_value; |
| 3152 | src->fix_value = 1; |
| 3153 | break; |
| 3154 | #endif |
| 3155 | |
| 3156 | case C_BLOCK: /* ".bb" or ".eb" */ |
| 3157 | case C_FCN: /* ".bf" or ".ef" */ |
| 3158 | case C_EFCN: /* physical end of function */ |
| 3159 | dst->symbol.flags = BSF_LOCAL; |
| 3160 | /* |
| 3161 | Base the value as an index from the base of the section |
| 3162 | */ |
| 3163 | dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma; |
| 3164 | break; |
| 3165 | |
| 3166 | case C_NULL: |
| 3167 | case C_EXTDEF: /* external definition */ |
| 3168 | case C_ULABEL: /* undefined label */ |
| 3169 | case C_USTATIC: /* undefined static */ |
| 3170 | #ifndef COFF_WITH_PE |
| 3171 | /* C_LINE in regular coff is 0x68. NT has taken over this storage |
| 3172 | class to represent a section symbol */ |
| 3173 | case C_LINE: /* line # reformatted as symbol table entry */ |
| 3174 | /* NT uses 0x67 for a weak symbol, not C_ALIAS. */ |
| 3175 | case C_ALIAS: /* duplicate tag */ |
| 3176 | #endif |
| 3177 | case C_HIDDEN: /* ext symbol in dmert public lib */ |
| 3178 | default: |
| 3179 | (*_bfd_error_handler) |
| 3180 | ("%s: Unrecognized storage class %d for %s symbol `%s'", |
| 3181 | bfd_get_filename (abfd), src->u.syment.n_sclass, |
| 3182 | dst->symbol.section->name, dst->symbol.name); |
| 3183 | dst->symbol.flags = BSF_DEBUGGING; |
| 3184 | dst->symbol.value = (src->u.syment.n_value); |
| 3185 | break; |
| 3186 | } |
| 3187 | |
| 3188 | /* BFD_ASSERT(dst->symbol.flags != 0);*/ |
| 3189 | |
| 3190 | dst->native = src; |
| 3191 | |
| 3192 | dst->symbol.udata.i = 0; |
| 3193 | dst->lineno = (alent *) NULL; |
| 3194 | this_index += (src->u.syment.n_numaux) + 1; |
| 3195 | dst++; |
| 3196 | number_of_symbols++; |
| 3197 | } /* walk the native symtab */ |
| 3198 | } /* bfdize the native symtab */ |
| 3199 | |
| 3200 | obj_symbols (abfd) = cached_area; |
| 3201 | obj_raw_syments (abfd) = native_symbols; |
| 3202 | |
| 3203 | bfd_get_symcount (abfd) = number_of_symbols; |
| 3204 | obj_convert (abfd) = table_ptr; |
| 3205 | /* Slurp the line tables for each section too */ |
| 3206 | { |
| 3207 | asection *p; |
| 3208 | p = abfd->sections; |
| 3209 | while (p) |
| 3210 | { |
| 3211 | coff_slurp_line_table (abfd, p); |
| 3212 | p = p->next; |
| 3213 | } |
| 3214 | } |
| 3215 | return true; |
| 3216 | } /* coff_slurp_symbol_table() */ |
| 3217 | |
| 3218 | /* Check whether a symbol is globally visible. This is used by the |
| 3219 | COFF backend linker code in cofflink.c, since a couple of targets |
| 3220 | have globally visible symbols which are not class C_EXT. This |
| 3221 | function need not handle the case of n_class == C_EXT. */ |
| 3222 | |
| 3223 | #undef OTHER_GLOBAL_CLASS |
| 3224 | |
| 3225 | #ifdef I960 |
| 3226 | #define OTHER_GLOBAL_CLASS C_LEAFEXT |
| 3227 | #endif |
| 3228 | |
| 3229 | #ifdef COFF_WITH_PE |
| 3230 | #define OTHER_GLOBAL_CLASS C_SECTION |
| 3231 | #endif |
| 3232 | |
| 3233 | #ifdef OTHER_GLOBAL_CLASS |
| 3234 | |
| 3235 | static boolean |
| 3236 | coff_sym_is_global (abfd, syment) |
| 3237 | bfd *abfd; |
| 3238 | struct internal_syment *syment; |
| 3239 | { |
| 3240 | if (syment->n_sclass == OTHER_GLOBAL_CLASS) |
| 3241 | return true; |
| 3242 | return false; |
| 3243 | } |
| 3244 | |
| 3245 | #undef OTHER_GLOBAL_CLASS |
| 3246 | |
| 3247 | #else /* ! defined (OTHER_GLOBAL_CLASS) */ |
| 3248 | |
| 3249 | /* sym_is_global should not be defined if it has nothing to do. */ |
| 3250 | |
| 3251 | #define coff_sym_is_global 0 |
| 3252 | |
| 3253 | #endif /* ! defined (OTHER_GLOBAL_CLASS) */ |
| 3254 | |
| 3255 | /* |
| 3256 | SUBSUBSECTION |
| 3257 | Reading relocations |
| 3258 | |
| 3259 | Coff relocations are easily transformed into the internal BFD form |
| 3260 | (@code{arelent}). |
| 3261 | |
| 3262 | Reading a coff relocation table is done in the following stages: |
| 3263 | |
| 3264 | o Read the entire coff relocation table into memory. |
| 3265 | |
| 3266 | o Process each relocation in turn; first swap it from the |
| 3267 | external to the internal form. |
| 3268 | |
| 3269 | o Turn the symbol referenced in the relocation's symbol index |
| 3270 | into a pointer into the canonical symbol table. |
| 3271 | This table is the same as the one returned by a call to |
| 3272 | @code{bfd_canonicalize_symtab}. The back end will call that |
| 3273 | routine and save the result if a canonicalization hasn't been done. |
| 3274 | |
| 3275 | o The reloc index is turned into a pointer to a howto |
| 3276 | structure, in a back end specific way. For instance, the 386 |
| 3277 | and 960 use the @code{r_type} to directly produce an index |
| 3278 | into a howto table vector; the 88k subtracts a number from the |
| 3279 | @code{r_type} field and creates an addend field. |
| 3280 | |
| 3281 | |
| 3282 | */ |
| 3283 | |
| 3284 | #ifndef CALC_ADDEND |
| 3285 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ |
| 3286 | { \ |
| 3287 | coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \ |
| 3288 | if (ptr && bfd_asymbol_bfd (ptr) != abfd) \ |
| 3289 | coffsym = (obj_symbols (abfd) \ |
| 3290 | + (cache_ptr->sym_ptr_ptr - symbols)); \ |
| 3291 | else if (ptr) \ |
| 3292 | coffsym = coff_symbol_from (abfd, ptr); \ |
| 3293 | if (coffsym != (coff_symbol_type *) NULL \ |
| 3294 | && coffsym->native->u.syment.n_scnum == 0) \ |
| 3295 | cache_ptr->addend = 0; \ |
| 3296 | else if (ptr && bfd_asymbol_bfd (ptr) == abfd \ |
| 3297 | && ptr->section != (asection *) NULL) \ |
| 3298 | cache_ptr->addend = - (ptr->section->vma + ptr->value); \ |
| 3299 | else \ |
| 3300 | cache_ptr->addend = 0; \ |
| 3301 | } |
| 3302 | #endif |
| 3303 | |
| 3304 | static boolean |
| 3305 | coff_slurp_reloc_table (abfd, asect, symbols) |
| 3306 | bfd * abfd; |
| 3307 | sec_ptr asect; |
| 3308 | asymbol ** symbols; |
| 3309 | { |
| 3310 | RELOC *native_relocs; |
| 3311 | arelent *reloc_cache; |
| 3312 | arelent *cache_ptr; |
| 3313 | |
| 3314 | unsigned int idx; |
| 3315 | |
| 3316 | if (asect->relocation) |
| 3317 | return true; |
| 3318 | if (asect->reloc_count == 0) |
| 3319 | return true; |
| 3320 | if (asect->flags & SEC_CONSTRUCTOR) |
| 3321 | return true; |
| 3322 | if (!coff_slurp_symbol_table (abfd)) |
| 3323 | return false; |
| 3324 | native_relocs = |
| 3325 | (RELOC *) buy_and_read (abfd, |
| 3326 | asect->rel_filepos, |
| 3327 | SEEK_SET, |
| 3328 | (size_t) (RELSZ * |
| 3329 | asect->reloc_count)); |
| 3330 | reloc_cache = (arelent *) |
| 3331 | bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent))); |
| 3332 | |
| 3333 | if (reloc_cache == NULL) |
| 3334 | return false; |
| 3335 | |
| 3336 | |
| 3337 | for (idx = 0; idx < asect->reloc_count; idx++) |
| 3338 | { |
| 3339 | #ifdef RELOC_PROCESSING |
| 3340 | struct internal_reloc dst; |
| 3341 | struct external_reloc *src; |
| 3342 | |
| 3343 | cache_ptr = reloc_cache + idx; |
| 3344 | src = native_relocs + idx; |
| 3345 | coff_swap_reloc_in (abfd, src, &dst); |
| 3346 | |
| 3347 | RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect); |
| 3348 | #else |
| 3349 | struct internal_reloc dst; |
| 3350 | asymbol *ptr; |
| 3351 | struct external_reloc *src; |
| 3352 | |
| 3353 | cache_ptr = reloc_cache + idx; |
| 3354 | src = native_relocs + idx; |
| 3355 | |
| 3356 | coff_swap_reloc_in (abfd, src, &dst); |
| 3357 | |
| 3358 | |
| 3359 | cache_ptr->address = dst.r_vaddr; |
| 3360 | |
| 3361 | if (dst.r_symndx != -1) |
| 3362 | { |
| 3363 | /* @@ Should never be greater than count of symbols! */ |
| 3364 | if (dst.r_symndx >= obj_conv_table_size (abfd)) |
| 3365 | abort (); |
| 3366 | cache_ptr->sym_ptr_ptr = symbols + obj_convert (abfd)[dst.r_symndx]; |
| 3367 | ptr = *(cache_ptr->sym_ptr_ptr); |
| 3368 | } |
| 3369 | else |
| 3370 | { |
| 3371 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 3372 | ptr = 0; |
| 3373 | } |
| 3374 | |
| 3375 | /* The symbols definitions that we have read in have been |
| 3376 | relocated as if their sections started at 0. But the offsets |
| 3377 | refering to the symbols in the raw data have not been |
| 3378 | modified, so we have to have a negative addend to compensate. |
| 3379 | |
| 3380 | Note that symbols which used to be common must be left alone */ |
| 3381 | |
| 3382 | /* Calculate any reloc addend by looking at the symbol */ |
| 3383 | CALC_ADDEND (abfd, ptr, dst, cache_ptr); |
| 3384 | |
| 3385 | cache_ptr->address -= asect->vma; |
| 3386 | /* !! cache_ptr->section = (asection *) NULL;*/ |
| 3387 | |
| 3388 | /* Fill in the cache_ptr->howto field from dst.r_type */ |
| 3389 | RTYPE2HOWTO (cache_ptr, &dst); |
| 3390 | #endif |
| 3391 | |
| 3392 | } |
| 3393 | |
| 3394 | asect->relocation = reloc_cache; |
| 3395 | return true; |
| 3396 | } |
| 3397 | |
| 3398 | #ifndef coff_rtype_to_howto |
| 3399 | #ifdef RTYPE2HOWTO |
| 3400 | |
| 3401 | /* Get the howto structure for a reloc. This is only used if the file |
| 3402 | including this one defines coff_relocate_section to be |
| 3403 | _bfd_coff_generic_relocate_section, so it is OK if it does not |
| 3404 | always work. It is the responsibility of the including file to |
| 3405 | make sure it is reasonable if it is needed. */ |
| 3406 | |
| 3407 | static reloc_howto_type *coff_rtype_to_howto |
| 3408 | PARAMS ((bfd *, asection *, struct internal_reloc *, |
| 3409 | struct coff_link_hash_entry *, struct internal_syment *, |
| 3410 | bfd_vma *)); |
| 3411 | |
| 3412 | /*ARGSUSED*/ |
| 3413 | static reloc_howto_type * |
| 3414 | coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp) |
| 3415 | bfd *abfd; |
| 3416 | asection *sec; |
| 3417 | struct internal_reloc *rel; |
| 3418 | struct coff_link_hash_entry *h; |
| 3419 | struct internal_syment *sym; |
| 3420 | bfd_vma *addendp; |
| 3421 | { |
| 3422 | arelent genrel; |
| 3423 | |
| 3424 | RTYPE2HOWTO (&genrel, rel); |
| 3425 | return genrel.howto; |
| 3426 | } |
| 3427 | |
| 3428 | #else /* ! defined (RTYPE2HOWTO) */ |
| 3429 | |
| 3430 | #define coff_rtype_to_howto NULL |
| 3431 | |
| 3432 | #endif /* ! defined (RTYPE2HOWTO) */ |
| 3433 | #endif /* ! defined (coff_rtype_to_howto) */ |
| 3434 | |
| 3435 | /* This is stupid. This function should be a boolean predicate. */ |
| 3436 | static long |
| 3437 | coff_canonicalize_reloc (abfd, section, relptr, symbols) |
| 3438 | bfd * abfd; |
| 3439 | sec_ptr section; |
| 3440 | arelent ** relptr; |
| 3441 | asymbol ** symbols; |
| 3442 | { |
| 3443 | arelent *tblptr = section->relocation; |
| 3444 | unsigned int count = 0; |
| 3445 | |
| 3446 | |
| 3447 | if (section->flags & SEC_CONSTRUCTOR) |
| 3448 | { |
| 3449 | /* this section has relocs made up by us, they are not in the |
| 3450 | file, so take them out of their chain and place them into |
| 3451 | the data area provided */ |
| 3452 | arelent_chain *chain = section->constructor_chain; |
| 3453 | for (count = 0; count < section->reloc_count; count++) |
| 3454 | { |
| 3455 | *relptr++ = &chain->relent; |
| 3456 | chain = chain->next; |
| 3457 | } |
| 3458 | |
| 3459 | } |
| 3460 | else |
| 3461 | { |
| 3462 | if (! coff_slurp_reloc_table (abfd, section, symbols)) |
| 3463 | return -1; |
| 3464 | |
| 3465 | tblptr = section->relocation; |
| 3466 | |
| 3467 | for (; count++ < section->reloc_count;) |
| 3468 | *relptr++ = tblptr++; |
| 3469 | |
| 3470 | |
| 3471 | } |
| 3472 | *relptr = 0; |
| 3473 | return section->reloc_count; |
| 3474 | } |
| 3475 | |
| 3476 | #ifdef GNU960 |
| 3477 | file_ptr |
| 3478 | coff_sym_filepos (abfd) |
| 3479 | bfd *abfd; |
| 3480 | { |
| 3481 | return obj_sym_filepos (abfd); |
| 3482 | } |
| 3483 | #endif |
| 3484 | |
| 3485 | #ifndef coff_reloc16_estimate |
| 3486 | #define coff_reloc16_estimate dummy_reloc16_estimate |
| 3487 | |
| 3488 | static int |
| 3489 | dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info) |
| 3490 | bfd *abfd; |
| 3491 | asection *input_section; |
| 3492 | arelent *reloc; |
| 3493 | unsigned int shrink; |
| 3494 | struct bfd_link_info *link_info; |
| 3495 | { |
| 3496 | abort (); |
| 3497 | } |
| 3498 | |
| 3499 | #endif |
| 3500 | |
| 3501 | #ifndef coff_reloc16_extra_cases |
| 3502 | #define coff_reloc16_extra_cases dummy_reloc16_extra_cases |
| 3503 | /* This works even if abort is not declared in any header file. */ |
| 3504 | static void |
| 3505 | dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr, |
| 3506 | dst_ptr) |
| 3507 | bfd *abfd; |
| 3508 | struct bfd_link_info *link_info; |
| 3509 | struct bfd_link_order *link_order; |
| 3510 | arelent *reloc; |
| 3511 | bfd_byte *data; |
| 3512 | unsigned int *src_ptr; |
| 3513 | unsigned int *dst_ptr; |
| 3514 | { |
| 3515 | abort (); |
| 3516 | } |
| 3517 | #endif |
| 3518 | |
| 3519 | /* If coff_relocate_section is defined, we can use the optimized COFF |
| 3520 | backend linker. Otherwise we must continue to use the old linker. */ |
| 3521 | #ifdef coff_relocate_section |
| 3522 | #ifndef coff_bfd_link_hash_table_create |
| 3523 | #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create |
| 3524 | #endif |
| 3525 | #ifndef coff_bfd_link_add_symbols |
| 3526 | #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols |
| 3527 | #endif |
| 3528 | #ifndef coff_bfd_final_link |
| 3529 | #define coff_bfd_final_link _bfd_coff_final_link |
| 3530 | #endif |
| 3531 | #else /* ! defined (coff_relocate_section) */ |
| 3532 | #define coff_relocate_section NULL |
| 3533 | #ifndef coff_bfd_link_hash_table_create |
| 3534 | #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| 3535 | #endif |
| 3536 | #ifndef coff_bfd_link_add_symbols |
| 3537 | #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| 3538 | #endif |
| 3539 | #define coff_bfd_final_link _bfd_generic_final_link |
| 3540 | #endif /* ! defined (coff_relocate_section) */ |
| 3541 | #define coff_bfd_link_split_section _bfd_generic_link_split_section |
| 3542 | |
| 3543 | #ifndef coff_start_final_link |
| 3544 | #define coff_start_final_link NULL |
| 3545 | #endif |
| 3546 | |
| 3547 | #ifndef coff_adjust_symndx |
| 3548 | #define coff_adjust_symndx NULL |
| 3549 | #endif |
| 3550 | |
| 3551 | #ifndef coff_link_add_one_symbol |
| 3552 | #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol |
| 3553 | #endif |
| 3554 | |
| 3555 | static CONST bfd_coff_backend_data bfd_coff_std_swap_table = |
| 3556 | { |
| 3557 | coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in, |
| 3558 | coff_swap_aux_out, coff_swap_sym_out, |
| 3559 | coff_swap_lineno_out, coff_swap_reloc_out, |
| 3560 | coff_swap_filehdr_out, coff_swap_aouthdr_out, |
| 3561 | coff_swap_scnhdr_out, |
| 3562 | FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, |
| 3563 | #ifdef COFF_LONG_FILENAMES |
| 3564 | true, |
| 3565 | #else |
| 3566 | false, |
| 3567 | #endif |
| 3568 | coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in, |
| 3569 | coff_swap_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook, |
| 3570 | coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook, |
| 3571 | coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook, |
| 3572 | coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate, |
| 3573 | coff_sym_is_global, coff_compute_section_file_positions, |
| 3574 | coff_start_final_link, coff_relocate_section, coff_rtype_to_howto, |
| 3575 | coff_adjust_symndx, coff_link_add_one_symbol |
| 3576 | }; |
| 3577 | |
| 3578 | #define coff_close_and_cleanup _bfd_generic_close_and_cleanup |
| 3579 | #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| 3580 | #define coff_get_section_contents _bfd_generic_get_section_contents |
| 3581 | |
| 3582 | #ifndef coff_bfd_copy_private_symbol_data |
| 3583 | #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data |
| 3584 | #endif |
| 3585 | |
| 3586 | #ifndef coff_bfd_copy_private_section_data |
| 3587 | #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data |
| 3588 | #endif |
| 3589 | |
| 3590 | #ifndef coff_bfd_copy_private_bfd_data |
| 3591 | #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data |
| 3592 | #endif |
| 3593 | |
| 3594 | #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data |
| 3595 | #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags |
| 3596 | |
| 3597 | #ifndef coff_bfd_print_private_bfd_data |
| 3598 | #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data |
| 3599 | #endif |
| 3600 | |
| 3601 | #ifndef coff_bfd_is_local_label |
| 3602 | #define coff_bfd_is_local_label bfd_generic_is_local_label |
| 3603 | #endif |
| 3604 | #ifndef coff_read_minisymbols |
| 3605 | #define coff_read_minisymbols _bfd_generic_read_minisymbols |
| 3606 | #endif |
| 3607 | #ifndef coff_minisymbol_to_symbol |
| 3608 | #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 3609 | #endif |
| 3610 | |
| 3611 | /* The reloc lookup routine must be supplied by each individual COFF |
| 3612 | backend. */ |
| 3613 | #ifndef coff_bfd_reloc_type_lookup |
| 3614 | #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup |
| 3615 | #endif |
| 3616 | |
| 3617 | #ifndef coff_bfd_get_relocated_section_contents |
| 3618 | #define coff_bfd_get_relocated_section_contents \ |
| 3619 | bfd_generic_get_relocated_section_contents |
| 3620 | #endif |
| 3621 | #ifndef coff_bfd_relax_section |
| 3622 | #define coff_bfd_relax_section bfd_generic_relax_section |
| 3623 | #endif |