| 1 | /* Support for the generic parts of most COFF variants, for BFD. |
| 2 | Copyright 1990-2013 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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | /* Most of this hacked by Steve Chamberlain, |
| 23 | sac@cygnus.com. */ |
| 24 | /* |
| 25 | SECTION |
| 26 | coff backends |
| 27 | |
| 28 | BFD supports a number of different flavours of coff format. |
| 29 | The major differences between formats are the sizes and |
| 30 | alignments of fields in structures on disk, and the occasional |
| 31 | extra field. |
| 32 | |
| 33 | Coff in all its varieties is implemented with a few common |
| 34 | files and a number of implementation specific files. For |
| 35 | example, The 88k bcs coff format is implemented in the file |
| 36 | @file{coff-m88k.c}. This file @code{#include}s |
| 37 | @file{coff/m88k.h} which defines the external structure of the |
| 38 | coff format for the 88k, and @file{coff/internal.h} which |
| 39 | defines the internal structure. @file{coff-m88k.c} also |
| 40 | defines the relocations used by the 88k format |
| 41 | @xref{Relocations}. |
| 42 | |
| 43 | The Intel i960 processor version of coff is implemented in |
| 44 | @file{coff-i960.c}. This file has the same structure as |
| 45 | @file{coff-m88k.c}, except that it includes @file{coff/i960.h} |
| 46 | rather than @file{coff-m88k.h}. |
| 47 | |
| 48 | SUBSECTION |
| 49 | Porting to a new version of coff |
| 50 | |
| 51 | The recommended method is to select from the existing |
| 52 | implementations the version of coff which is most like the one |
| 53 | you want to use. For example, we'll say that i386 coff is |
| 54 | the one you select, and that your coff flavour is called foo. |
| 55 | Copy @file{i386coff.c} to @file{foocoff.c}, copy |
| 56 | @file{../include/coff/i386.h} to @file{../include/coff/foo.h}, |
| 57 | and add the lines to @file{targets.c} and @file{Makefile.in} |
| 58 | so that your new back end is used. Alter the shapes of the |
| 59 | structures in @file{../include/coff/foo.h} so that they match |
| 60 | what you need. You will probably also have to add |
| 61 | @code{#ifdef}s to the code in @file{coff/internal.h} and |
| 62 | @file{coffcode.h} if your version of coff is too wild. |
| 63 | |
| 64 | You can verify that your new BFD backend works quite simply by |
| 65 | building @file{objdump} from the @file{binutils} directory, |
| 66 | and making sure that its version of what's going on and your |
| 67 | host system's idea (assuming it has the pretty standard coff |
| 68 | dump utility, usually called @code{att-dump} or just |
| 69 | @code{dump}) are the same. Then clean up your code, and send |
| 70 | what you've done to Cygnus. Then your stuff will be in the |
| 71 | next release, and you won't have to keep integrating it. |
| 72 | |
| 73 | SUBSECTION |
| 74 | How the coff backend works |
| 75 | |
| 76 | SUBSUBSECTION |
| 77 | File layout |
| 78 | |
| 79 | The Coff backend is split into generic routines that are |
| 80 | applicable to any Coff target and routines that are specific |
| 81 | to a particular target. The target-specific routines are |
| 82 | further split into ones which are basically the same for all |
| 83 | Coff targets except that they use the external symbol format |
| 84 | or use different values for certain constants. |
| 85 | |
| 86 | The generic routines are in @file{coffgen.c}. These routines |
| 87 | work for any Coff target. They use some hooks into the target |
| 88 | specific code; the hooks are in a @code{bfd_coff_backend_data} |
| 89 | structure, one of which exists for each target. |
| 90 | |
| 91 | The essentially similar target-specific routines are in |
| 92 | @file{coffcode.h}. This header file includes executable C code. |
| 93 | The various Coff targets first include the appropriate Coff |
| 94 | header file, make any special defines that are needed, and |
| 95 | then include @file{coffcode.h}. |
| 96 | |
| 97 | Some of the Coff targets then also have additional routines in |
| 98 | the target source file itself. |
| 99 | |
| 100 | For example, @file{coff-i960.c} includes |
| 101 | @file{coff/internal.h} and @file{coff/i960.h}. It then |
| 102 | defines a few constants, such as @code{I960}, and includes |
| 103 | @file{coffcode.h}. Since the i960 has complex relocation |
| 104 | types, @file{coff-i960.c} also includes some code to |
| 105 | manipulate the i960 relocs. This code is not in |
| 106 | @file{coffcode.h} because it would not be used by any other |
| 107 | target. |
| 108 | |
| 109 | SUBSUBSECTION |
| 110 | Coff long section names |
| 111 | |
| 112 | In the standard Coff object format, section names are limited to |
| 113 | the eight bytes available in the @code{s_name} field of the |
| 114 | @code{SCNHDR} section header structure. The format requires the |
| 115 | field to be NUL-padded, but not necessarily NUL-terminated, so |
| 116 | the longest section names permitted are a full eight characters. |
| 117 | |
| 118 | The Microsoft PE variants of the Coff object file format add |
| 119 | an extension to support the use of long section names. This |
| 120 | extension is defined in section 4 of the Microsoft PE/COFF |
| 121 | specification (rev 8.1). If a section name is too long to fit |
| 122 | into the section header's @code{s_name} field, it is instead |
| 123 | placed into the string table, and the @code{s_name} field is |
| 124 | filled with a slash ("/") followed by the ASCII decimal |
| 125 | representation of the offset of the full name relative to the |
| 126 | string table base. |
| 127 | |
| 128 | Note that this implies that the extension can only be used in object |
| 129 | files, as executables do not contain a string table. The standard |
| 130 | specifies that long section names from objects emitted into executable |
| 131 | images are to be truncated. |
| 132 | |
| 133 | However, as a GNU extension, BFD can generate executable images |
| 134 | that contain a string table and long section names. This |
| 135 | would appear to be technically valid, as the standard only says |
| 136 | that Coff debugging information is deprecated, not forbidden, |
| 137 | and in practice it works, although some tools that parse PE files |
| 138 | expecting the MS standard format may become confused; @file{PEview} is |
| 139 | one known example. |
| 140 | |
| 141 | The functionality is supported in BFD by code implemented under |
| 142 | the control of the macro @code{COFF_LONG_SECTION_NAMES}. If not |
| 143 | defined, the format does not support long section names in any way. |
| 144 | If defined, it is used to initialise a flag, |
| 145 | @code{_bfd_coff_long_section_names}, and a hook function pointer, |
| 146 | @code{_bfd_coff_set_long_section_names}, in the Coff backend data |
| 147 | structure. The flag controls the generation of long section names |
| 148 | in output BFDs at runtime; if it is false, as it will be by default |
| 149 | when generating an executable image, long section names are truncated; |
| 150 | if true, the long section names extension is employed. The hook |
| 151 | points to a function that allows the value of the flag to be altered |
| 152 | at runtime, on formats that support long section names at all; on |
| 153 | other formats it points to a stub that returns an error indication. |
| 154 | |
| 155 | With input BFDs, the flag is set according to whether any long section |
| 156 | names are detected while reading the section headers. For a completely |
| 157 | new BFD, the flag is set to the default for the target format. This |
| 158 | information can be used by a client of the BFD library when deciding |
| 159 | what output format to generate, and means that a BFD that is opened |
| 160 | for read and subsequently converted to a writeable BFD and modified |
| 161 | in-place will retain whatever format it had on input. |
| 162 | |
| 163 | If @code{COFF_LONG_SECTION_NAMES} is simply defined (blank), or is |
| 164 | defined to the value "1", then long section names are enabled by |
| 165 | default; if it is defined to the value zero, they are disabled by |
| 166 | default (but still accepted in input BFDs). The header @file{coffcode.h} |
| 167 | defines a macro, @code{COFF_DEFAULT_LONG_SECTION_NAMES}, which is |
| 168 | used in the backends to initialise the backend data structure fields |
| 169 | appropriately; see the comments for further detail. |
| 170 | |
| 171 | SUBSUBSECTION |
| 172 | Bit twiddling |
| 173 | |
| 174 | Each flavour of coff supported in BFD has its own header file |
| 175 | describing the external layout of the structures. There is also |
| 176 | an internal description of the coff layout, in |
| 177 | @file{coff/internal.h}. A major function of the |
| 178 | coff backend is swapping the bytes and twiddling the bits to |
| 179 | translate the external form of the structures into the normal |
| 180 | internal form. This is all performed in the |
| 181 | @code{bfd_swap}_@i{thing}_@i{direction} routines. Some |
| 182 | elements are different sizes between different versions of |
| 183 | coff; it is the duty of the coff version specific include file |
| 184 | to override the definitions of various packing routines in |
| 185 | @file{coffcode.h}. E.g., the size of line number entry in coff is |
| 186 | sometimes 16 bits, and sometimes 32 bits. @code{#define}ing |
| 187 | @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the |
| 188 | correct one. No doubt, some day someone will find a version of |
| 189 | coff which has a varying field size not catered to at the |
| 190 | moment. To port BFD, that person will have to add more @code{#defines}. |
| 191 | Three of the bit twiddling routines are exported to |
| 192 | @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in} |
| 193 | and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol |
| 194 | table on its own, but uses BFD to fix things up. More of the |
| 195 | bit twiddlers are exported for @code{gas}; |
| 196 | @code{coff_swap_aux_out}, @code{coff_swap_sym_out}, |
| 197 | @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out}, |
| 198 | @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out}, |
| 199 | @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track |
| 200 | of all the symbol table and reloc drudgery itself, thereby |
| 201 | saving the internal BFD overhead, but uses BFD to swap things |
| 202 | on the way out, making cross ports much safer. Doing so also |
| 203 | allows BFD (and thus the linker) to use the same header files |
| 204 | as @code{gas}, which makes one avenue to disaster disappear. |
| 205 | |
| 206 | SUBSUBSECTION |
| 207 | Symbol reading |
| 208 | |
| 209 | The simple canonical form for symbols used by BFD is not rich |
| 210 | enough to keep all the information available in a coff symbol |
| 211 | table. The back end gets around this problem by keeping the original |
| 212 | symbol table around, "behind the scenes". |
| 213 | |
| 214 | When a symbol table is requested (through a call to |
| 215 | @code{bfd_canonicalize_symtab}), a request gets through to |
| 216 | @code{coff_get_normalized_symtab}. This reads the symbol table from |
| 217 | the coff file and swaps all the structures inside into the |
| 218 | internal form. It also fixes up all the pointers in the table |
| 219 | (represented in the file by offsets from the first symbol in |
| 220 | the table) into physical pointers to elements in the new |
| 221 | internal table. This involves some work since the meanings of |
| 222 | fields change depending upon context: a field that is a |
| 223 | pointer to another structure in the symbol table at one moment |
| 224 | may be the size in bytes of a structure at the next. Another |
| 225 | pass is made over the table. All symbols which mark file names |
| 226 | (<<C_FILE>> symbols) are modified so that the internal |
| 227 | string points to the value in the auxent (the real filename) |
| 228 | rather than the normal text associated with the symbol |
| 229 | (@code{".file"}). |
| 230 | |
| 231 | At this time the symbol names are moved around. Coff stores |
| 232 | all symbols less than nine characters long physically |
| 233 | within the symbol table; longer strings are kept at the end of |
| 234 | the file in the string table. This pass moves all strings |
| 235 | into memory and replaces them with pointers to the strings. |
| 236 | |
| 237 | The symbol table is massaged once again, this time to create |
| 238 | the canonical table used by the BFD application. Each symbol |
| 239 | is inspected in turn, and a decision made (using the |
| 240 | @code{sclass} field) about the various flags to set in the |
| 241 | @code{asymbol}. @xref{Symbols}. The generated canonical table |
| 242 | shares strings with the hidden internal symbol table. |
| 243 | |
| 244 | Any linenumbers are read from the coff file too, and attached |
| 245 | to the symbols which own the functions the linenumbers belong to. |
| 246 | |
| 247 | SUBSUBSECTION |
| 248 | Symbol writing |
| 249 | |
| 250 | Writing a symbol to a coff file which didn't come from a coff |
| 251 | file will lose any debugging information. The @code{asymbol} |
| 252 | structure remembers the BFD from which the symbol was taken, and on |
| 253 | output the back end makes sure that the same destination target as |
| 254 | source target is present. |
| 255 | |
| 256 | When the symbols have come from a coff file then all the |
| 257 | debugging information is preserved. |
| 258 | |
| 259 | Symbol tables are provided for writing to the back end in a |
| 260 | vector of pointers to pointers. This allows applications like |
| 261 | the linker to accumulate and output large symbol tables |
| 262 | without having to do too much byte copying. |
| 263 | |
| 264 | This function runs through the provided symbol table and |
| 265 | patches each symbol marked as a file place holder |
| 266 | (@code{C_FILE}) to point to the next file place holder in the |
| 267 | list. It also marks each @code{offset} field in the list with |
| 268 | the offset from the first symbol of the current symbol. |
| 269 | |
| 270 | Another function of this procedure is to turn the canonical |
| 271 | value form of BFD into the form used by coff. Internally, BFD |
| 272 | expects symbol values to be offsets from a section base; so a |
| 273 | symbol physically at 0x120, but in a section starting at |
| 274 | 0x100, would have the value 0x20. Coff expects symbols to |
| 275 | contain their final value, so symbols have their values |
| 276 | changed at this point to reflect their sum with their owning |
| 277 | section. This transformation uses the |
| 278 | <<output_section>> field of the @code{asymbol}'s |
| 279 | @code{asection} @xref{Sections}. |
| 280 | |
| 281 | o <<coff_mangle_symbols>> |
| 282 | |
| 283 | This routine runs though the provided symbol table and uses |
| 284 | the offsets generated by the previous pass and the pointers |
| 285 | generated when the symbol table was read in to create the |
| 286 | structured hierarchy required by coff. It changes each pointer |
| 287 | to a symbol into the index into the symbol table of the asymbol. |
| 288 | |
| 289 | o <<coff_write_symbols>> |
| 290 | |
| 291 | This routine runs through the symbol table and patches up the |
| 292 | symbols from their internal form into the coff way, calls the |
| 293 | bit twiddlers, and writes out the table to the file. |
| 294 | |
| 295 | */ |
| 296 | |
| 297 | /* |
| 298 | INTERNAL_DEFINITION |
| 299 | coff_symbol_type |
| 300 | |
| 301 | DESCRIPTION |
| 302 | The hidden information for an <<asymbol>> is described in a |
| 303 | <<combined_entry_type>>: |
| 304 | |
| 305 | CODE_FRAGMENT |
| 306 | . |
| 307 | .typedef struct coff_ptr_struct |
| 308 | .{ |
| 309 | . {* Remembers the offset from the first symbol in the file for |
| 310 | . this symbol. Generated by coff_renumber_symbols. *} |
| 311 | . unsigned int offset; |
| 312 | . |
| 313 | . {* Should the value of this symbol be renumbered. Used for |
| 314 | . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *} |
| 315 | . unsigned int fix_value : 1; |
| 316 | . |
| 317 | . {* Should the tag field of this symbol be renumbered. |
| 318 | . Created by coff_pointerize_aux. *} |
| 319 | . unsigned int fix_tag : 1; |
| 320 | . |
| 321 | . {* Should the endidx field of this symbol be renumbered. |
| 322 | . Created by coff_pointerize_aux. *} |
| 323 | . unsigned int fix_end : 1; |
| 324 | . |
| 325 | . {* Should the x_csect.x_scnlen field be renumbered. |
| 326 | . Created by coff_pointerize_aux. *} |
| 327 | . unsigned int fix_scnlen : 1; |
| 328 | . |
| 329 | . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the |
| 330 | . index into the line number entries. Set by coff_slurp_symbol_table. *} |
| 331 | . unsigned int fix_line : 1; |
| 332 | . |
| 333 | . {* The container for the symbol structure as read and translated |
| 334 | . from the file. *} |
| 335 | . union |
| 336 | . { |
| 337 | . union internal_auxent auxent; |
| 338 | . struct internal_syment syment; |
| 339 | . } u; |
| 340 | .} combined_entry_type; |
| 341 | . |
| 342 | . |
| 343 | .{* Each canonical asymbol really looks like this: *} |
| 344 | . |
| 345 | .typedef struct coff_symbol_struct |
| 346 | .{ |
| 347 | . {* The actual symbol which the rest of BFD works with *} |
| 348 | . asymbol symbol; |
| 349 | . |
| 350 | . {* A pointer to the hidden information for this symbol *} |
| 351 | . combined_entry_type *native; |
| 352 | . |
| 353 | . {* A pointer to the linenumber information for this symbol *} |
| 354 | . struct lineno_cache_entry *lineno; |
| 355 | . |
| 356 | . {* Have the line numbers been relocated yet ? *} |
| 357 | . bfd_boolean done_lineno; |
| 358 | .} coff_symbol_type; |
| 359 | |
| 360 | */ |
| 361 | |
| 362 | #include "libiberty.h" |
| 363 | |
| 364 | #ifdef COFF_WITH_PE |
| 365 | #include "peicode.h" |
| 366 | #else |
| 367 | #include "coffswap.h" |
| 368 | #endif |
| 369 | |
| 370 | #define STRING_SIZE_SIZE 4 |
| 371 | |
| 372 | #define DOT_DEBUG ".debug" |
| 373 | #define DOT_ZDEBUG ".zdebug" |
| 374 | #define GNU_LINKONCE_WI ".gnu.linkonce.wi." |
| 375 | #define GNU_LINKONCE_WT ".gnu.linkonce.wt." |
| 376 | #define DOT_RELOC ".reloc" |
| 377 | |
| 378 | #if defined (COFF_LONG_SECTION_NAMES) |
| 379 | /* Needed to expand the inputs to BLANKOR1TOODD. */ |
| 380 | #define COFFLONGSECTIONCATHELPER(x,y) x ## y |
| 381 | /* If the input macro Y is blank or '1', return an odd number; if it is |
| 382 | '0', return an even number. Result undefined in all other cases. */ |
| 383 | #define BLANKOR1TOODD(y) COFFLONGSECTIONCATHELPER(1,y) |
| 384 | /* Defined to numerical 0 or 1 according to whether generation of long |
| 385 | section names is disabled or enabled by default. */ |
| 386 | #define COFF_ENABLE_LONG_SECTION_NAMES (BLANKOR1TOODD(COFF_LONG_SECTION_NAMES) & 1) |
| 387 | /* Where long section names are supported, we allow them to be enabled |
| 388 | and disabled at runtime, so select an appropriate hook function for |
| 389 | _bfd_coff_set_long_section_names. */ |
| 390 | #define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_allowed |
| 391 | #else /* !defined (COFF_LONG_SECTION_NAMES) */ |
| 392 | /* If long section names are not supported, this stub disallows any |
| 393 | attempt to enable them at run-time. */ |
| 394 | #define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_disallowed |
| 395 | #endif /* defined (COFF_LONG_SECTION_NAMES) */ |
| 396 | |
| 397 | /* Define a macro that can be used to initialise both the fields relating |
| 398 | to long section names in the backend data struct simultaneously. */ |
| 399 | #if COFF_ENABLE_LONG_SECTION_NAMES |
| 400 | #define COFF_DEFAULT_LONG_SECTION_NAMES (TRUE), COFF_LONG_SECTION_NAMES_SETTER |
| 401 | #else /* !COFF_ENABLE_LONG_SECTION_NAMES */ |
| 402 | #define COFF_DEFAULT_LONG_SECTION_NAMES (FALSE), COFF_LONG_SECTION_NAMES_SETTER |
| 403 | #endif /* COFF_ENABLE_LONG_SECTION_NAMES */ |
| 404 | |
| 405 | #if defined (COFF_LONG_SECTION_NAMES) |
| 406 | static bfd_boolean bfd_coff_set_long_section_names_allowed |
| 407 | (bfd *, int); |
| 408 | #else /* !defined (COFF_LONG_SECTION_NAMES) */ |
| 409 | static bfd_boolean bfd_coff_set_long_section_names_disallowed |
| 410 | (bfd *, int); |
| 411 | #endif /* defined (COFF_LONG_SECTION_NAMES) */ |
| 412 | static long sec_to_styp_flags |
| 413 | (const char *, flagword); |
| 414 | static bfd_boolean styp_to_sec_flags |
| 415 | (bfd *, void *, const char *, asection *, flagword *); |
| 416 | static bfd_boolean coff_bad_format_hook |
| 417 | (bfd *, void *); |
| 418 | static void coff_set_custom_section_alignment |
| 419 | (bfd *, asection *, const struct coff_section_alignment_entry *, |
| 420 | const unsigned int); |
| 421 | static bfd_boolean coff_new_section_hook |
| 422 | (bfd *, asection *); |
| 423 | static bfd_boolean coff_set_arch_mach_hook |
| 424 | (bfd *, void *); |
| 425 | static bfd_boolean coff_write_relocs |
| 426 | (bfd *, int); |
| 427 | static bfd_boolean coff_set_flags |
| 428 | (bfd *, unsigned int *, unsigned short *); |
| 429 | static bfd_boolean coff_set_arch_mach |
| 430 | (bfd *, enum bfd_architecture, unsigned long) ATTRIBUTE_UNUSED; |
| 431 | static bfd_boolean coff_compute_section_file_positions |
| 432 | (bfd *); |
| 433 | static bfd_boolean coff_write_object_contents |
| 434 | (bfd *) ATTRIBUTE_UNUSED; |
| 435 | static bfd_boolean coff_set_section_contents |
| 436 | (bfd *, asection *, const void *, file_ptr, bfd_size_type); |
| 437 | static void * buy_and_read |
| 438 | (bfd *, file_ptr, bfd_size_type); |
| 439 | static bfd_boolean coff_slurp_line_table |
| 440 | (bfd *, asection *); |
| 441 | static bfd_boolean coff_slurp_symbol_table |
| 442 | (bfd *); |
| 443 | static enum coff_symbol_classification coff_classify_symbol |
| 444 | (bfd *, struct internal_syment *); |
| 445 | static bfd_boolean coff_slurp_reloc_table |
| 446 | (bfd *, asection *, asymbol **); |
| 447 | static long coff_canonicalize_reloc |
| 448 | (bfd *, asection *, arelent **, asymbol **); |
| 449 | #ifndef coff_mkobject_hook |
| 450 | static void * coff_mkobject_hook |
| 451 | (bfd *, void *, void *); |
| 452 | #endif |
| 453 | #ifdef COFF_WITH_PE |
| 454 | static flagword handle_COMDAT |
| 455 | (bfd *, flagword, void *, const char *, asection *); |
| 456 | #endif |
| 457 | #ifdef COFF_IMAGE_WITH_PE |
| 458 | static bfd_boolean coff_read_word |
| 459 | (bfd *, unsigned int *); |
| 460 | static unsigned int coff_compute_checksum |
| 461 | (bfd *); |
| 462 | static bfd_boolean coff_apply_checksum |
| 463 | (bfd *); |
| 464 | #endif |
| 465 | #ifdef TICOFF |
| 466 | static bfd_boolean ticoff0_bad_format_hook |
| 467 | (bfd *, void * ); |
| 468 | static bfd_boolean ticoff1_bad_format_hook |
| 469 | (bfd *, void * ); |
| 470 | #endif |
| 471 | \f |
| 472 | /* void warning(); */ |
| 473 | |
| 474 | #if defined (COFF_LONG_SECTION_NAMES) |
| 475 | static bfd_boolean |
| 476 | bfd_coff_set_long_section_names_allowed (bfd *abfd, int enable) |
| 477 | { |
| 478 | coff_backend_info (abfd)->_bfd_coff_long_section_names = enable; |
| 479 | return TRUE; |
| 480 | } |
| 481 | #else /* !defined (COFF_LONG_SECTION_NAMES) */ |
| 482 | static bfd_boolean |
| 483 | bfd_coff_set_long_section_names_disallowed (bfd *abfd, int enable) |
| 484 | { |
| 485 | (void) abfd; |
| 486 | (void) enable; |
| 487 | return FALSE; |
| 488 | } |
| 489 | #endif /* defined (COFF_LONG_SECTION_NAMES) */ |
| 490 | |
| 491 | /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent |
| 492 | the incoming SEC_* flags. The inverse of this function is |
| 493 | styp_to_sec_flags(). NOTE: If you add to/change this routine, you |
| 494 | should probably mirror the changes in styp_to_sec_flags(). */ |
| 495 | |
| 496 | #ifndef COFF_WITH_PE |
| 497 | |
| 498 | /* Macros for setting debugging flags. */ |
| 499 | |
| 500 | #ifdef STYP_DEBUG |
| 501 | #define STYP_XCOFF_DEBUG STYP_DEBUG |
| 502 | #else |
| 503 | #define STYP_XCOFF_DEBUG STYP_INFO |
| 504 | #endif |
| 505 | |
| 506 | #ifdef COFF_ALIGN_IN_S_FLAGS |
| 507 | #define STYP_DEBUG_INFO STYP_DSECT |
| 508 | #else |
| 509 | #define STYP_DEBUG_INFO STYP_INFO |
| 510 | #endif |
| 511 | |
| 512 | static long |
| 513 | sec_to_styp_flags (const char *sec_name, flagword sec_flags) |
| 514 | { |
| 515 | long styp_flags = 0; |
| 516 | |
| 517 | if (!strcmp (sec_name, _TEXT)) |
| 518 | { |
| 519 | styp_flags = STYP_TEXT; |
| 520 | } |
| 521 | else if (!strcmp (sec_name, _DATA)) |
| 522 | { |
| 523 | styp_flags = STYP_DATA; |
| 524 | } |
| 525 | else if (!strcmp (sec_name, _BSS)) |
| 526 | { |
| 527 | styp_flags = STYP_BSS; |
| 528 | #ifdef _COMMENT |
| 529 | } |
| 530 | else if (!strcmp (sec_name, _COMMENT)) |
| 531 | { |
| 532 | styp_flags = STYP_INFO; |
| 533 | #endif /* _COMMENT */ |
| 534 | #ifdef _LIB |
| 535 | } |
| 536 | else if (!strcmp (sec_name, _LIB)) |
| 537 | { |
| 538 | styp_flags = STYP_LIB; |
| 539 | #endif /* _LIB */ |
| 540 | #ifdef _LIT |
| 541 | } |
| 542 | else if (!strcmp (sec_name, _LIT)) |
| 543 | { |
| 544 | styp_flags = STYP_LIT; |
| 545 | #endif /* _LIT */ |
| 546 | } |
| 547 | else if (CONST_STRNEQ (sec_name, DOT_DEBUG) |
| 548 | || CONST_STRNEQ (sec_name, DOT_ZDEBUG)) |
| 549 | { |
| 550 | /* Handle the XCOFF debug section and DWARF2 debug sections. */ |
| 551 | if (!sec_name[6]) |
| 552 | styp_flags = STYP_XCOFF_DEBUG; |
| 553 | else |
| 554 | styp_flags = STYP_DEBUG_INFO; |
| 555 | } |
| 556 | else if (CONST_STRNEQ (sec_name, ".stab")) |
| 557 | { |
| 558 | styp_flags = STYP_DEBUG_INFO; |
| 559 | } |
| 560 | #ifdef COFF_LONG_SECTION_NAMES |
| 561 | else if (CONST_STRNEQ (sec_name, GNU_LINKONCE_WI) |
| 562 | || CONST_STRNEQ (sec_name, GNU_LINKONCE_WT)) |
| 563 | { |
| 564 | styp_flags = STYP_DEBUG_INFO; |
| 565 | } |
| 566 | #endif |
| 567 | #ifdef RS6000COFF_C |
| 568 | else if (!strcmp (sec_name, _PAD)) |
| 569 | { |
| 570 | styp_flags = STYP_PAD; |
| 571 | } |
| 572 | else if (!strcmp (sec_name, _LOADER)) |
| 573 | { |
| 574 | styp_flags = STYP_LOADER; |
| 575 | } |
| 576 | else if (!strcmp (sec_name, _EXCEPT)) |
| 577 | { |
| 578 | styp_flags = STYP_EXCEPT; |
| 579 | } |
| 580 | else if (!strcmp (sec_name, _TYPCHK)) |
| 581 | { |
| 582 | styp_flags = STYP_TYPCHK; |
| 583 | } |
| 584 | else if (sec_flags & SEC_DEBUGGING) |
| 585 | { |
| 586 | int i; |
| 587 | |
| 588 | for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++) |
| 589 | if (!strcmp (sec_name, xcoff_dwsect_names[i].name)) |
| 590 | { |
| 591 | styp_flags = STYP_DWARF | xcoff_dwsect_names[i].flag; |
| 592 | break; |
| 593 | } |
| 594 | } |
| 595 | #endif |
| 596 | /* Try and figure out what it should be */ |
| 597 | else if (sec_flags & SEC_CODE) |
| 598 | { |
| 599 | styp_flags = STYP_TEXT; |
| 600 | } |
| 601 | else if (sec_flags & SEC_DATA) |
| 602 | { |
| 603 | styp_flags = STYP_DATA; |
| 604 | } |
| 605 | else if (sec_flags & SEC_READONLY) |
| 606 | { |
| 607 | #ifdef STYP_LIT /* 29k readonly text/data section */ |
| 608 | styp_flags = STYP_LIT; |
| 609 | #else |
| 610 | styp_flags = STYP_TEXT; |
| 611 | #endif /* STYP_LIT */ |
| 612 | } |
| 613 | else if (sec_flags & SEC_LOAD) |
| 614 | { |
| 615 | styp_flags = STYP_TEXT; |
| 616 | } |
| 617 | else if (sec_flags & SEC_ALLOC) |
| 618 | { |
| 619 | styp_flags = STYP_BSS; |
| 620 | } |
| 621 | |
| 622 | #ifdef STYP_CLINK |
| 623 | if (sec_flags & SEC_TIC54X_CLINK) |
| 624 | styp_flags |= STYP_CLINK; |
| 625 | #endif |
| 626 | |
| 627 | #ifdef STYP_BLOCK |
| 628 | if (sec_flags & SEC_TIC54X_BLOCK) |
| 629 | styp_flags |= STYP_BLOCK; |
| 630 | #endif |
| 631 | |
| 632 | #ifdef STYP_NOLOAD |
| 633 | if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0) |
| 634 | styp_flags |= STYP_NOLOAD; |
| 635 | #endif |
| 636 | |
| 637 | return styp_flags; |
| 638 | } |
| 639 | |
| 640 | #else /* COFF_WITH_PE */ |
| 641 | |
| 642 | /* The PE version; see above for the general comments. The non-PE |
| 643 | case seems to be more guessing, and breaks PE format; specifically, |
| 644 | .rdata is readonly, but it sure ain't text. Really, all this |
| 645 | should be set up properly in gas (or whatever assembler is in use), |
| 646 | and honor whatever objcopy/strip, etc. sent us as input. */ |
| 647 | |
| 648 | static long |
| 649 | sec_to_styp_flags (const char *sec_name, flagword sec_flags) |
| 650 | { |
| 651 | long styp_flags = 0; |
| 652 | bfd_boolean is_dbg = FALSE; |
| 653 | |
| 654 | if (CONST_STRNEQ (sec_name, DOT_DEBUG) |
| 655 | || CONST_STRNEQ (sec_name, DOT_ZDEBUG) |
| 656 | #ifdef COFF_LONG_SECTION_NAMES |
| 657 | || CONST_STRNEQ (sec_name, GNU_LINKONCE_WI) |
| 658 | || CONST_STRNEQ (sec_name, GNU_LINKONCE_WT) |
| 659 | #endif |
| 660 | || CONST_STRNEQ (sec_name, ".stab")) |
| 661 | is_dbg = TRUE; |
| 662 | |
| 663 | /* caution: there are at least three groups of symbols that have |
| 664 | very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*. |
| 665 | SEC_* are the BFD internal flags, used for generic BFD |
| 666 | information. STYP_* are the COFF section flags which appear in |
| 667 | COFF files. IMAGE_SCN_* are the PE section flags which appear in |
| 668 | PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap, |
| 669 | but there are more IMAGE_SCN_* flags. */ |
| 670 | |
| 671 | /* FIXME: There is no gas syntax to specify the debug section flag. */ |
| 672 | if (is_dbg) |
| 673 | { |
| 674 | sec_flags &= (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD |
| 675 | | SEC_LINK_DUPLICATES_SAME_CONTENTS |
| 676 | | SEC_LINK_DUPLICATES_SAME_SIZE); |
| 677 | sec_flags |= SEC_DEBUGGING | SEC_READONLY; |
| 678 | } |
| 679 | |
| 680 | /* skip LOAD */ |
| 681 | /* READONLY later */ |
| 682 | /* skip RELOC */ |
| 683 | if ((sec_flags & SEC_CODE) != 0) |
| 684 | styp_flags |= IMAGE_SCN_CNT_CODE; |
| 685 | if ((sec_flags & (SEC_DATA | SEC_DEBUGGING)) != 0) |
| 686 | styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA; |
| 687 | if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0) |
| 688 | styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */ |
| 689 | /* skip ROM */ |
| 690 | /* skip constRUCTOR */ |
| 691 | /* skip CONTENTS */ |
| 692 | if ((sec_flags & SEC_IS_COMMON) != 0) |
| 693 | styp_flags |= IMAGE_SCN_LNK_COMDAT; |
| 694 | if ((sec_flags & SEC_DEBUGGING) != 0) |
| 695 | styp_flags |= IMAGE_SCN_MEM_DISCARDABLE; |
| 696 | if ((sec_flags & SEC_EXCLUDE) != 0 && !is_dbg) |
| 697 | styp_flags |= IMAGE_SCN_LNK_REMOVE; |
| 698 | if ((sec_flags & SEC_NEVER_LOAD) != 0 && !is_dbg) |
| 699 | styp_flags |= IMAGE_SCN_LNK_REMOVE; |
| 700 | /* skip IN_MEMORY */ |
| 701 | /* skip SORT */ |
| 702 | if (sec_flags & SEC_LINK_ONCE) |
| 703 | styp_flags |= IMAGE_SCN_LNK_COMDAT; |
| 704 | if ((sec_flags |
| 705 | & (SEC_LINK_DUPLICATES_DISCARD | SEC_LINK_DUPLICATES_SAME_CONTENTS |
| 706 | | SEC_LINK_DUPLICATES_SAME_SIZE)) != 0) |
| 707 | styp_flags |= IMAGE_SCN_LNK_COMDAT; |
| 708 | |
| 709 | /* skip LINKER_CREATED */ |
| 710 | |
| 711 | if ((sec_flags & SEC_COFF_NOREAD) == 0) |
| 712 | styp_flags |= IMAGE_SCN_MEM_READ; /* Invert NOREAD for read. */ |
| 713 | if ((sec_flags & SEC_READONLY) == 0) |
| 714 | styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write. */ |
| 715 | if (sec_flags & SEC_CODE) |
| 716 | styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE. */ |
| 717 | if (sec_flags & SEC_COFF_SHARED) |
| 718 | styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful. */ |
| 719 | |
| 720 | return styp_flags; |
| 721 | } |
| 722 | |
| 723 | #endif /* COFF_WITH_PE */ |
| 724 | |
| 725 | /* Return a word with SEC_* flags set to represent the incoming STYP_* |
| 726 | flags (from scnhdr.s_flags). The inverse of this function is |
| 727 | sec_to_styp_flags(). NOTE: If you add to/change this routine, you |
| 728 | should probably mirror the changes in sec_to_styp_flags(). */ |
| 729 | |
| 730 | #ifndef COFF_WITH_PE |
| 731 | |
| 732 | static bfd_boolean |
| 733 | styp_to_sec_flags (bfd *abfd ATTRIBUTE_UNUSED, |
| 734 | void * hdr, |
| 735 | const char *name, |
| 736 | asection *section ATTRIBUTE_UNUSED, |
| 737 | flagword *flags_ptr) |
| 738 | { |
| 739 | struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
| 740 | long styp_flags = internal_s->s_flags; |
| 741 | flagword sec_flags = 0; |
| 742 | |
| 743 | #ifdef STYP_BLOCK |
| 744 | if (styp_flags & STYP_BLOCK) |
| 745 | sec_flags |= SEC_TIC54X_BLOCK; |
| 746 | #endif |
| 747 | |
| 748 | #ifdef STYP_CLINK |
| 749 | if (styp_flags & STYP_CLINK) |
| 750 | sec_flags |= SEC_TIC54X_CLINK; |
| 751 | #endif |
| 752 | |
| 753 | #ifdef STYP_NOLOAD |
| 754 | if (styp_flags & STYP_NOLOAD) |
| 755 | sec_flags |= SEC_NEVER_LOAD; |
| 756 | #endif /* STYP_NOLOAD */ |
| 757 | |
| 758 | /* For 386 COFF, at least, an unloadable text or data section is |
| 759 | actually a shared library section. */ |
| 760 | if (styp_flags & STYP_TEXT) |
| 761 | { |
| 762 | if (sec_flags & SEC_NEVER_LOAD) |
| 763 | sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; |
| 764 | else |
| 765 | sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; |
| 766 | } |
| 767 | else if (styp_flags & STYP_DATA) |
| 768 | { |
| 769 | if (sec_flags & SEC_NEVER_LOAD) |
| 770 | sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; |
| 771 | else |
| 772 | sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; |
| 773 | } |
| 774 | else if (styp_flags & STYP_BSS) |
| 775 | { |
| 776 | #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY |
| 777 | if (sec_flags & SEC_NEVER_LOAD) |
| 778 | sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY; |
| 779 | else |
| 780 | #endif |
| 781 | sec_flags |= SEC_ALLOC; |
| 782 | } |
| 783 | else if (styp_flags & STYP_INFO) |
| 784 | { |
| 785 | /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is |
| 786 | defined. coff_compute_section_file_positions uses |
| 787 | COFF_PAGE_SIZE to ensure that the low order bits of the |
| 788 | section VMA and the file offset match. If we don't know |
| 789 | COFF_PAGE_SIZE, we can't ensure the correct correspondence, |
| 790 | and demand page loading of the file will fail. */ |
| 791 | #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS) |
| 792 | sec_flags |= SEC_DEBUGGING; |
| 793 | #endif |
| 794 | } |
| 795 | else if (styp_flags & STYP_PAD) |
| 796 | sec_flags = 0; |
| 797 | #ifdef RS6000COFF_C |
| 798 | else if (styp_flags & STYP_EXCEPT) |
| 799 | sec_flags |= SEC_LOAD; |
| 800 | else if (styp_flags & STYP_LOADER) |
| 801 | sec_flags |= SEC_LOAD; |
| 802 | else if (styp_flags & STYP_TYPCHK) |
| 803 | sec_flags |= SEC_LOAD; |
| 804 | else if (styp_flags & STYP_DWARF) |
| 805 | sec_flags |= SEC_DEBUGGING; |
| 806 | #endif |
| 807 | else if (strcmp (name, _TEXT) == 0) |
| 808 | { |
| 809 | if (sec_flags & SEC_NEVER_LOAD) |
| 810 | sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; |
| 811 | else |
| 812 | sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; |
| 813 | } |
| 814 | else if (strcmp (name, _DATA) == 0) |
| 815 | { |
| 816 | if (sec_flags & SEC_NEVER_LOAD) |
| 817 | sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; |
| 818 | else |
| 819 | sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; |
| 820 | } |
| 821 | else if (strcmp (name, _BSS) == 0) |
| 822 | { |
| 823 | #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY |
| 824 | if (sec_flags & SEC_NEVER_LOAD) |
| 825 | sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY; |
| 826 | else |
| 827 | #endif |
| 828 | sec_flags |= SEC_ALLOC; |
| 829 | } |
| 830 | else if (CONST_STRNEQ (name, DOT_DEBUG) |
| 831 | || CONST_STRNEQ (name, DOT_ZDEBUG) |
| 832 | #ifdef _COMMENT |
| 833 | || strcmp (name, _COMMENT) == 0 |
| 834 | #endif |
| 835 | #ifdef COFF_LONG_SECTION_NAMES |
| 836 | || CONST_STRNEQ (name, GNU_LINKONCE_WI) |
| 837 | || CONST_STRNEQ (name, GNU_LINKONCE_WT) |
| 838 | #endif |
| 839 | || CONST_STRNEQ (name, ".stab")) |
| 840 | { |
| 841 | #ifdef COFF_PAGE_SIZE |
| 842 | sec_flags |= SEC_DEBUGGING; |
| 843 | #endif |
| 844 | } |
| 845 | #ifdef _LIB |
| 846 | else if (strcmp (name, _LIB) == 0) |
| 847 | ; |
| 848 | #endif |
| 849 | #ifdef _LIT |
| 850 | else if (strcmp (name, _LIT) == 0) |
| 851 | sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY; |
| 852 | #endif |
| 853 | else |
| 854 | sec_flags |= SEC_ALLOC | SEC_LOAD; |
| 855 | |
| 856 | #ifdef STYP_LIT /* A29k readonly text/data section type. */ |
| 857 | if ((styp_flags & STYP_LIT) == STYP_LIT) |
| 858 | sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY); |
| 859 | #endif /* STYP_LIT */ |
| 860 | |
| 861 | #ifdef STYP_OTHER_LOAD /* Other loaded sections. */ |
| 862 | if (styp_flags & STYP_OTHER_LOAD) |
| 863 | sec_flags = (SEC_LOAD | SEC_ALLOC); |
| 864 | #endif /* STYP_SDATA */ |
| 865 | |
| 866 | #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE) |
| 867 | /* As a GNU extension, if the name begins with .gnu.linkonce, we |
| 868 | only link a single copy of the section. This is used to support |
| 869 | g++. g++ will emit each template expansion in its own section. |
| 870 | The symbols will be defined as weak, so that multiple definitions |
| 871 | are permitted. The GNU linker extension is to actually discard |
| 872 | all but one of the sections. */ |
| 873 | if (CONST_STRNEQ (name, ".gnu.linkonce")) |
| 874 | sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
| 875 | #endif |
| 876 | |
| 877 | if (flags_ptr == NULL) |
| 878 | return FALSE; |
| 879 | |
| 880 | * flags_ptr = sec_flags; |
| 881 | return TRUE; |
| 882 | } |
| 883 | |
| 884 | #else /* COFF_WITH_PE */ |
| 885 | |
| 886 | static flagword |
| 887 | handle_COMDAT (bfd * abfd, |
| 888 | flagword sec_flags, |
| 889 | void * hdr, |
| 890 | const char *name, |
| 891 | asection *section) |
| 892 | { |
| 893 | struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
| 894 | bfd_byte *esymstart, *esym, *esymend; |
| 895 | int seen_state = 0; |
| 896 | char *target_name = NULL; |
| 897 | |
| 898 | sec_flags |= SEC_LINK_ONCE; |
| 899 | |
| 900 | /* Unfortunately, the PE format stores essential information in |
| 901 | the symbol table, of all places. We need to extract that |
| 902 | information now, so that objdump and the linker will know how |
| 903 | to handle the section without worrying about the symbols. We |
| 904 | can't call slurp_symtab, because the linker doesn't want the |
| 905 | swapped symbols. */ |
| 906 | |
| 907 | /* COMDAT sections are special. The first symbol is the section |
| 908 | symbol, which tells what kind of COMDAT section it is. The |
| 909 | second symbol is the "comdat symbol" - the one with the |
| 910 | unique name. GNU uses the section symbol for the unique |
| 911 | name; MS uses ".text" for every comdat section. Sigh. - DJ */ |
| 912 | |
| 913 | /* This is not mirrored in sec_to_styp_flags(), but there |
| 914 | doesn't seem to be a need to, either, and it would at best be |
| 915 | rather messy. */ |
| 916 | |
| 917 | if (! _bfd_coff_get_external_symbols (abfd)) |
| 918 | return sec_flags; |
| 919 | |
| 920 | esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd); |
| 921 | esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd); |
| 922 | |
| 923 | while (esym < esymend) |
| 924 | { |
| 925 | struct internal_syment isym; |
| 926 | char buf[SYMNMLEN + 1]; |
| 927 | const char *symname; |
| 928 | |
| 929 | bfd_coff_swap_sym_in (abfd, esym, & isym); |
| 930 | |
| 931 | if (sizeof (internal_s->s_name) > SYMNMLEN) |
| 932 | { |
| 933 | /* This case implies that the matching |
| 934 | symbol name will be in the string table. */ |
| 935 | abort (); |
| 936 | } |
| 937 | |
| 938 | if (isym.n_scnum == section->target_index) |
| 939 | { |
| 940 | /* According to the MSVC documentation, the first |
| 941 | TWO entries with the section # are both of |
| 942 | interest to us. The first one is the "section |
| 943 | symbol" (section name). The second is the comdat |
| 944 | symbol name. Here, we've found the first |
| 945 | qualifying entry; we distinguish it from the |
| 946 | second with a state flag. |
| 947 | |
| 948 | In the case of gas-generated (at least until that |
| 949 | is fixed) .o files, it isn't necessarily the |
| 950 | second one. It may be some other later symbol. |
| 951 | |
| 952 | Since gas also doesn't follow MS conventions and |
| 953 | emits the section similar to .text$<name>, where |
| 954 | <something> is the name we're looking for, we |
| 955 | distinguish the two as follows: |
| 956 | |
| 957 | If the section name is simply a section name (no |
| 958 | $) we presume it's MS-generated, and look at |
| 959 | precisely the second symbol for the comdat name. |
| 960 | If the section name has a $, we assume it's |
| 961 | gas-generated, and look for <something> (whatever |
| 962 | follows the $) as the comdat symbol. */ |
| 963 | |
| 964 | /* All 3 branches use this. */ |
| 965 | symname = _bfd_coff_internal_syment_name (abfd, &isym, buf); |
| 966 | |
| 967 | if (symname == NULL) |
| 968 | abort (); |
| 969 | |
| 970 | switch (seen_state) |
| 971 | { |
| 972 | case 0: |
| 973 | { |
| 974 | /* The first time we've seen the symbol. */ |
| 975 | union internal_auxent aux; |
| 976 | |
| 977 | /* If it isn't the stuff we're expecting, die; |
| 978 | The MS documentation is vague, but it |
| 979 | appears that the second entry serves BOTH |
| 980 | as the comdat symbol and the defining |
| 981 | symbol record (either C_STAT or C_EXT, |
| 982 | possibly with an aux entry with debug |
| 983 | information if it's a function.) It |
| 984 | appears the only way to find the second one |
| 985 | is to count. (On Intel, they appear to be |
| 986 | adjacent, but on Alpha, they have been |
| 987 | found separated.) |
| 988 | |
| 989 | Here, we think we've found the first one, |
| 990 | but there's some checking we can do to be |
| 991 | sure. */ |
| 992 | |
| 993 | if (! ((isym.n_sclass == C_STAT |
| 994 | || isym.n_sclass == C_EXT) |
| 995 | && BTYPE (isym.n_type) == T_NULL |
| 996 | && isym.n_value == 0)) |
| 997 | abort (); |
| 998 | |
| 999 | /* FIXME LATER: MSVC generates section names |
| 1000 | like .text for comdats. Gas generates |
| 1001 | names like .text$foo__Fv (in the case of a |
| 1002 | function). See comment above for more. */ |
| 1003 | |
| 1004 | if (isym.n_sclass == C_STAT && strcmp (name, symname) != 0) |
| 1005 | _bfd_error_handler (_("%B: warning: COMDAT symbol '%s' does not match section name '%s'"), |
| 1006 | abfd, symname, name); |
| 1007 | |
| 1008 | seen_state = 1; |
| 1009 | |
| 1010 | /* This is the section symbol. */ |
| 1011 | bfd_coff_swap_aux_in (abfd, (esym + bfd_coff_symesz (abfd)), |
| 1012 | isym.n_type, isym.n_sclass, |
| 1013 | 0, isym.n_numaux, & aux); |
| 1014 | |
| 1015 | target_name = strchr (name, '$'); |
| 1016 | if (target_name != NULL) |
| 1017 | { |
| 1018 | /* Gas mode. */ |
| 1019 | seen_state = 2; |
| 1020 | /* Skip the `$'. */ |
| 1021 | target_name += 1; |
| 1022 | } |
| 1023 | |
| 1024 | /* FIXME: Microsoft uses NODUPLICATES and |
| 1025 | ASSOCIATIVE, but gnu uses ANY and |
| 1026 | SAME_SIZE. Unfortunately, gnu doesn't do |
| 1027 | the comdat symbols right. So, until we can |
| 1028 | fix it to do the right thing, we are |
| 1029 | temporarily disabling comdats for the MS |
| 1030 | types (they're used in DLLs and C++, but we |
| 1031 | don't support *their* C++ libraries anyway |
| 1032 | - DJ. */ |
| 1033 | |
| 1034 | /* Cygwin does not follow the MS style, and |
| 1035 | uses ANY and SAME_SIZE where NODUPLICATES |
| 1036 | and ASSOCIATIVE should be used. For |
| 1037 | Interix, we just do the right thing up |
| 1038 | front. */ |
| 1039 | |
| 1040 | switch (aux.x_scn.x_comdat) |
| 1041 | { |
| 1042 | case IMAGE_COMDAT_SELECT_NODUPLICATES: |
| 1043 | #ifdef STRICT_PE_FORMAT |
| 1044 | sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY; |
| 1045 | #else |
| 1046 | sec_flags &= ~SEC_LINK_ONCE; |
| 1047 | #endif |
| 1048 | break; |
| 1049 | |
| 1050 | case IMAGE_COMDAT_SELECT_ANY: |
| 1051 | sec_flags |= SEC_LINK_DUPLICATES_DISCARD; |
| 1052 | break; |
| 1053 | |
| 1054 | case IMAGE_COMDAT_SELECT_SAME_SIZE: |
| 1055 | sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE; |
| 1056 | break; |
| 1057 | |
| 1058 | case IMAGE_COMDAT_SELECT_EXACT_MATCH: |
| 1059 | /* Not yet fully implemented ??? */ |
| 1060 | sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; |
| 1061 | break; |
| 1062 | |
| 1063 | /* debug$S gets this case; other |
| 1064 | implications ??? */ |
| 1065 | |
| 1066 | /* There may be no symbol... we'll search |
| 1067 | the whole table... Is this the right |
| 1068 | place to play this game? Or should we do |
| 1069 | it when reading it in. */ |
| 1070 | case IMAGE_COMDAT_SELECT_ASSOCIATIVE: |
| 1071 | #ifdef STRICT_PE_FORMAT |
| 1072 | /* FIXME: This is not currently implemented. */ |
| 1073 | sec_flags |= SEC_LINK_DUPLICATES_DISCARD; |
| 1074 | #else |
| 1075 | sec_flags &= ~SEC_LINK_ONCE; |
| 1076 | #endif |
| 1077 | break; |
| 1078 | |
| 1079 | default: /* 0 means "no symbol" */ |
| 1080 | /* debug$F gets this case; other |
| 1081 | implications ??? */ |
| 1082 | sec_flags |= SEC_LINK_DUPLICATES_DISCARD; |
| 1083 | break; |
| 1084 | } |
| 1085 | } |
| 1086 | break; |
| 1087 | |
| 1088 | case 2: |
| 1089 | /* Gas mode: the first matching on partial name. */ |
| 1090 | |
| 1091 | #ifndef TARGET_UNDERSCORE |
| 1092 | #define TARGET_UNDERSCORE 0 |
| 1093 | #endif |
| 1094 | /* Is this the name we're looking for ? */ |
| 1095 | if (strcmp (target_name, |
| 1096 | symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0) |
| 1097 | { |
| 1098 | /* Not the name we're looking for */ |
| 1099 | esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd); |
| 1100 | continue; |
| 1101 | } |
| 1102 | /* Fall through. */ |
| 1103 | case 1: |
| 1104 | /* MSVC mode: the lexically second symbol (or |
| 1105 | drop through from the above). */ |
| 1106 | { |
| 1107 | char *newname; |
| 1108 | bfd_size_type amt; |
| 1109 | |
| 1110 | /* This must the second symbol with the |
| 1111 | section #. It is the actual symbol name. |
| 1112 | Intel puts the two adjacent, but Alpha (at |
| 1113 | least) spreads them out. */ |
| 1114 | |
| 1115 | amt = sizeof (struct coff_comdat_info); |
| 1116 | coff_section_data (abfd, section)->comdat |
| 1117 | = (struct coff_comdat_info *) bfd_alloc (abfd, amt); |
| 1118 | if (coff_section_data (abfd, section)->comdat == NULL) |
| 1119 | abort (); |
| 1120 | |
| 1121 | coff_section_data (abfd, section)->comdat->symbol = |
| 1122 | (esym - esymstart) / bfd_coff_symesz (abfd); |
| 1123 | |
| 1124 | amt = strlen (symname) + 1; |
| 1125 | newname = (char *) bfd_alloc (abfd, amt); |
| 1126 | if (newname == NULL) |
| 1127 | abort (); |
| 1128 | |
| 1129 | strcpy (newname, symname); |
| 1130 | coff_section_data (abfd, section)->comdat->name |
| 1131 | = newname; |
| 1132 | } |
| 1133 | |
| 1134 | goto breakloop; |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd); |
| 1139 | } |
| 1140 | |
| 1141 | breakloop: |
| 1142 | return sec_flags; |
| 1143 | } |
| 1144 | |
| 1145 | |
| 1146 | /* The PE version; see above for the general comments. |
| 1147 | |
| 1148 | Since to set the SEC_LINK_ONCE and associated flags, we have to |
| 1149 | look at the symbol table anyway, we return the symbol table index |
| 1150 | of the symbol being used as the COMDAT symbol. This is admittedly |
| 1151 | ugly, but there's really nowhere else that we have access to the |
| 1152 | required information. FIXME: Is the COMDAT symbol index used for |
| 1153 | any purpose other than objdump? */ |
| 1154 | |
| 1155 | static bfd_boolean |
| 1156 | styp_to_sec_flags (bfd *abfd, |
| 1157 | void * hdr, |
| 1158 | const char *name, |
| 1159 | asection *section, |
| 1160 | flagword *flags_ptr) |
| 1161 | { |
| 1162 | struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
| 1163 | long styp_flags = internal_s->s_flags; |
| 1164 | flagword sec_flags; |
| 1165 | bfd_boolean result = TRUE; |
| 1166 | bfd_boolean is_dbg = FALSE; |
| 1167 | |
| 1168 | if (CONST_STRNEQ (name, DOT_DEBUG) |
| 1169 | || CONST_STRNEQ (name, DOT_ZDEBUG) |
| 1170 | #ifdef COFF_LONG_SECTION_NAMES |
| 1171 | || CONST_STRNEQ (name, GNU_LINKONCE_WI) |
| 1172 | || CONST_STRNEQ (name, GNU_LINKONCE_WT) |
| 1173 | #endif |
| 1174 | || CONST_STRNEQ (name, ".stab")) |
| 1175 | is_dbg = TRUE; |
| 1176 | /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */ |
| 1177 | sec_flags = SEC_READONLY; |
| 1178 | |
| 1179 | /* If section disallows read, then set the NOREAD flag. */ |
| 1180 | if ((styp_flags & IMAGE_SCN_MEM_READ) == 0) |
| 1181 | sec_flags |= SEC_COFF_NOREAD; |
| 1182 | |
| 1183 | /* Process each flag bit in styp_flags in turn. */ |
| 1184 | while (styp_flags) |
| 1185 | { |
| 1186 | long flag = styp_flags & - styp_flags; |
| 1187 | char * unhandled = NULL; |
| 1188 | |
| 1189 | styp_flags &= ~ flag; |
| 1190 | |
| 1191 | /* We infer from the distinct read/write/execute bits the settings |
| 1192 | of some of the bfd flags; the actual values, should we need them, |
| 1193 | are also in pei_section_data (abfd, section)->pe_flags. */ |
| 1194 | |
| 1195 | switch (flag) |
| 1196 | { |
| 1197 | case STYP_DSECT: |
| 1198 | unhandled = "STYP_DSECT"; |
| 1199 | break; |
| 1200 | case STYP_GROUP: |
| 1201 | unhandled = "STYP_GROUP"; |
| 1202 | break; |
| 1203 | case STYP_COPY: |
| 1204 | unhandled = "STYP_COPY"; |
| 1205 | break; |
| 1206 | case STYP_OVER: |
| 1207 | unhandled = "STYP_OVER"; |
| 1208 | break; |
| 1209 | #ifdef SEC_NEVER_LOAD |
| 1210 | case STYP_NOLOAD: |
| 1211 | sec_flags |= SEC_NEVER_LOAD; |
| 1212 | break; |
| 1213 | #endif |
| 1214 | case IMAGE_SCN_MEM_READ: |
| 1215 | sec_flags &= ~SEC_COFF_NOREAD; |
| 1216 | break; |
| 1217 | case IMAGE_SCN_TYPE_NO_PAD: |
| 1218 | /* Skip. */ |
| 1219 | break; |
| 1220 | case IMAGE_SCN_LNK_OTHER: |
| 1221 | unhandled = "IMAGE_SCN_LNK_OTHER"; |
| 1222 | break; |
| 1223 | case IMAGE_SCN_MEM_NOT_CACHED: |
| 1224 | unhandled = "IMAGE_SCN_MEM_NOT_CACHED"; |
| 1225 | break; |
| 1226 | case IMAGE_SCN_MEM_NOT_PAGED: |
| 1227 | /* Generate a warning message rather using the 'unhandled' |
| 1228 | variable as this will allow some .sys files generate by |
| 1229 | other toolchains to be processed. See bugzilla issue 196. */ |
| 1230 | _bfd_error_handler (_("%B: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section %s"), |
| 1231 | abfd, name); |
| 1232 | break; |
| 1233 | case IMAGE_SCN_MEM_EXECUTE: |
| 1234 | sec_flags |= SEC_CODE; |
| 1235 | break; |
| 1236 | case IMAGE_SCN_MEM_WRITE: |
| 1237 | sec_flags &= ~ SEC_READONLY; |
| 1238 | break; |
| 1239 | case IMAGE_SCN_MEM_DISCARDABLE: |
| 1240 | /* The MS PE spec says that debug sections are DISCARDABLE, |
| 1241 | but the presence of a DISCARDABLE flag does not necessarily |
| 1242 | mean that a given section contains debug information. Thus |
| 1243 | we only set the SEC_DEBUGGING flag on sections that we |
| 1244 | recognise as containing debug information. */ |
| 1245 | if (is_dbg |
| 1246 | #ifdef _COMMENT |
| 1247 | || strcmp (name, _COMMENT) == 0 |
| 1248 | #endif |
| 1249 | ) |
| 1250 | { |
| 1251 | sec_flags |= SEC_DEBUGGING | SEC_READONLY; |
| 1252 | } |
| 1253 | break; |
| 1254 | case IMAGE_SCN_MEM_SHARED: |
| 1255 | sec_flags |= SEC_COFF_SHARED; |
| 1256 | break; |
| 1257 | case IMAGE_SCN_LNK_REMOVE: |
| 1258 | if (!is_dbg) |
| 1259 | sec_flags |= SEC_EXCLUDE; |
| 1260 | break; |
| 1261 | case IMAGE_SCN_CNT_CODE: |
| 1262 | sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD; |
| 1263 | break; |
| 1264 | case IMAGE_SCN_CNT_INITIALIZED_DATA: |
| 1265 | if (is_dbg) |
| 1266 | sec_flags |= SEC_DEBUGGING; |
| 1267 | else |
| 1268 | sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD; |
| 1269 | break; |
| 1270 | case IMAGE_SCN_CNT_UNINITIALIZED_DATA: |
| 1271 | sec_flags |= SEC_ALLOC; |
| 1272 | break; |
| 1273 | case IMAGE_SCN_LNK_INFO: |
| 1274 | /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is |
| 1275 | defined. coff_compute_section_file_positions uses |
| 1276 | COFF_PAGE_SIZE to ensure that the low order bits of the |
| 1277 | section VMA and the file offset match. If we don't know |
| 1278 | COFF_PAGE_SIZE, we can't ensure the correct correspondence, |
| 1279 | and demand page loading of the file will fail. */ |
| 1280 | #ifdef COFF_PAGE_SIZE |
| 1281 | sec_flags |= SEC_DEBUGGING; |
| 1282 | #endif |
| 1283 | break; |
| 1284 | case IMAGE_SCN_LNK_COMDAT: |
| 1285 | /* COMDAT gets very special treatment. */ |
| 1286 | sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section); |
| 1287 | break; |
| 1288 | default: |
| 1289 | /* Silently ignore for now. */ |
| 1290 | break; |
| 1291 | } |
| 1292 | |
| 1293 | /* If the section flag was not handled, report it here. */ |
| 1294 | if (unhandled != NULL) |
| 1295 | { |
| 1296 | (*_bfd_error_handler) |
| 1297 | (_("%B (%s): Section flag %s (0x%x) ignored"), |
| 1298 | abfd, name, unhandled, flag); |
| 1299 | result = FALSE; |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE) |
| 1304 | /* As a GNU extension, if the name begins with .gnu.linkonce, we |
| 1305 | only link a single copy of the section. This is used to support |
| 1306 | g++. g++ will emit each template expansion in its own section. |
| 1307 | The symbols will be defined as weak, so that multiple definitions |
| 1308 | are permitted. The GNU linker extension is to actually discard |
| 1309 | all but one of the sections. */ |
| 1310 | if (CONST_STRNEQ (name, ".gnu.linkonce")) |
| 1311 | sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
| 1312 | #endif |
| 1313 | |
| 1314 | if (flags_ptr) |
| 1315 | * flags_ptr = sec_flags; |
| 1316 | |
| 1317 | return result; |
| 1318 | } |
| 1319 | |
| 1320 | #endif /* COFF_WITH_PE */ |
| 1321 | |
| 1322 | #define get_index(symbol) ((symbol)->udata.i) |
| 1323 | |
| 1324 | /* |
| 1325 | INTERNAL_DEFINITION |
| 1326 | bfd_coff_backend_data |
| 1327 | |
| 1328 | CODE_FRAGMENT |
| 1329 | |
| 1330 | .{* COFF symbol classifications. *} |
| 1331 | . |
| 1332 | .enum coff_symbol_classification |
| 1333 | .{ |
| 1334 | . {* Global symbol. *} |
| 1335 | . COFF_SYMBOL_GLOBAL, |
| 1336 | . {* Common symbol. *} |
| 1337 | . COFF_SYMBOL_COMMON, |
| 1338 | . {* Undefined symbol. *} |
| 1339 | . COFF_SYMBOL_UNDEFINED, |
| 1340 | . {* Local symbol. *} |
| 1341 | . COFF_SYMBOL_LOCAL, |
| 1342 | . {* PE section symbol. *} |
| 1343 | . COFF_SYMBOL_PE_SECTION |
| 1344 | .}; |
| 1345 | . |
| 1346 | Special entry points for gdb to swap in coff symbol table parts: |
| 1347 | .typedef struct |
| 1348 | .{ |
| 1349 | . void (*_bfd_coff_swap_aux_in) |
| 1350 | . (bfd *, void *, int, int, int, int, void *); |
| 1351 | . |
| 1352 | . void (*_bfd_coff_swap_sym_in) |
| 1353 | . (bfd *, void *, void *); |
| 1354 | . |
| 1355 | . void (*_bfd_coff_swap_lineno_in) |
| 1356 | . (bfd *, void *, void *); |
| 1357 | . |
| 1358 | . unsigned int (*_bfd_coff_swap_aux_out) |
| 1359 | . (bfd *, void *, int, int, int, int, void *); |
| 1360 | . |
| 1361 | . unsigned int (*_bfd_coff_swap_sym_out) |
| 1362 | . (bfd *, void *, void *); |
| 1363 | . |
| 1364 | . unsigned int (*_bfd_coff_swap_lineno_out) |
| 1365 | . (bfd *, void *, void *); |
| 1366 | . |
| 1367 | . unsigned int (*_bfd_coff_swap_reloc_out) |
| 1368 | . (bfd *, void *, void *); |
| 1369 | . |
| 1370 | . unsigned int (*_bfd_coff_swap_filehdr_out) |
| 1371 | . (bfd *, void *, void *); |
| 1372 | . |
| 1373 | . unsigned int (*_bfd_coff_swap_aouthdr_out) |
| 1374 | . (bfd *, void *, void *); |
| 1375 | . |
| 1376 | . unsigned int (*_bfd_coff_swap_scnhdr_out) |
| 1377 | . (bfd *, void *, void *); |
| 1378 | . |
| 1379 | . unsigned int _bfd_filhsz; |
| 1380 | . unsigned int _bfd_aoutsz; |
| 1381 | . unsigned int _bfd_scnhsz; |
| 1382 | . unsigned int _bfd_symesz; |
| 1383 | . unsigned int _bfd_auxesz; |
| 1384 | . unsigned int _bfd_relsz; |
| 1385 | . unsigned int _bfd_linesz; |
| 1386 | . unsigned int _bfd_filnmlen; |
| 1387 | . bfd_boolean _bfd_coff_long_filenames; |
| 1388 | . |
| 1389 | . bfd_boolean _bfd_coff_long_section_names; |
| 1390 | . bfd_boolean (*_bfd_coff_set_long_section_names) |
| 1391 | . (bfd *, int); |
| 1392 | . |
| 1393 | . unsigned int _bfd_coff_default_section_alignment_power; |
| 1394 | . bfd_boolean _bfd_coff_force_symnames_in_strings; |
| 1395 | . unsigned int _bfd_coff_debug_string_prefix_length; |
| 1396 | . |
| 1397 | . void (*_bfd_coff_swap_filehdr_in) |
| 1398 | . (bfd *, void *, void *); |
| 1399 | . |
| 1400 | . void (*_bfd_coff_swap_aouthdr_in) |
| 1401 | . (bfd *, void *, void *); |
| 1402 | . |
| 1403 | . void (*_bfd_coff_swap_scnhdr_in) |
| 1404 | . (bfd *, void *, void *); |
| 1405 | . |
| 1406 | . void (*_bfd_coff_swap_reloc_in) |
| 1407 | . (bfd *abfd, void *, void *); |
| 1408 | . |
| 1409 | . bfd_boolean (*_bfd_coff_bad_format_hook) |
| 1410 | . (bfd *, void *); |
| 1411 | . |
| 1412 | . bfd_boolean (*_bfd_coff_set_arch_mach_hook) |
| 1413 | . (bfd *, void *); |
| 1414 | . |
| 1415 | . void * (*_bfd_coff_mkobject_hook) |
| 1416 | . (bfd *, void *, void *); |
| 1417 | . |
| 1418 | . bfd_boolean (*_bfd_styp_to_sec_flags_hook) |
| 1419 | . (bfd *, void *, const char *, asection *, flagword *); |
| 1420 | . |
| 1421 | . void (*_bfd_set_alignment_hook) |
| 1422 | . (bfd *, asection *, void *); |
| 1423 | . |
| 1424 | . bfd_boolean (*_bfd_coff_slurp_symbol_table) |
| 1425 | . (bfd *); |
| 1426 | . |
| 1427 | . bfd_boolean (*_bfd_coff_symname_in_debug) |
| 1428 | . (bfd *, struct internal_syment *); |
| 1429 | . |
| 1430 | . bfd_boolean (*_bfd_coff_pointerize_aux_hook) |
| 1431 | . (bfd *, combined_entry_type *, combined_entry_type *, |
| 1432 | . unsigned int, combined_entry_type *); |
| 1433 | . |
| 1434 | . bfd_boolean (*_bfd_coff_print_aux) |
| 1435 | . (bfd *, FILE *, combined_entry_type *, combined_entry_type *, |
| 1436 | . combined_entry_type *, unsigned int); |
| 1437 | . |
| 1438 | . void (*_bfd_coff_reloc16_extra_cases) |
| 1439 | . (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, |
| 1440 | . bfd_byte *, unsigned int *, unsigned int *); |
| 1441 | . |
| 1442 | . int (*_bfd_coff_reloc16_estimate) |
| 1443 | . (bfd *, asection *, arelent *, unsigned int, |
| 1444 | . struct bfd_link_info *); |
| 1445 | . |
| 1446 | . enum coff_symbol_classification (*_bfd_coff_classify_symbol) |
| 1447 | . (bfd *, struct internal_syment *); |
| 1448 | . |
| 1449 | . bfd_boolean (*_bfd_coff_compute_section_file_positions) |
| 1450 | . (bfd *); |
| 1451 | . |
| 1452 | . bfd_boolean (*_bfd_coff_start_final_link) |
| 1453 | . (bfd *, struct bfd_link_info *); |
| 1454 | . |
| 1455 | . bfd_boolean (*_bfd_coff_relocate_section) |
| 1456 | . (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 1457 | . struct internal_reloc *, struct internal_syment *, asection **); |
| 1458 | . |
| 1459 | . reloc_howto_type *(*_bfd_coff_rtype_to_howto) |
| 1460 | . (bfd *, asection *, struct internal_reloc *, |
| 1461 | . struct coff_link_hash_entry *, struct internal_syment *, |
| 1462 | . bfd_vma *); |
| 1463 | . |
| 1464 | . bfd_boolean (*_bfd_coff_adjust_symndx) |
| 1465 | . (bfd *, struct bfd_link_info *, bfd *, asection *, |
| 1466 | . struct internal_reloc *, bfd_boolean *); |
| 1467 | . |
| 1468 | . bfd_boolean (*_bfd_coff_link_add_one_symbol) |
| 1469 | . (struct bfd_link_info *, bfd *, const char *, flagword, |
| 1470 | . asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean, |
| 1471 | . struct bfd_link_hash_entry **); |
| 1472 | . |
| 1473 | . bfd_boolean (*_bfd_coff_link_output_has_begun) |
| 1474 | . (bfd *, struct coff_final_link_info *); |
| 1475 | . |
| 1476 | . bfd_boolean (*_bfd_coff_final_link_postscript) |
| 1477 | . (bfd *, struct coff_final_link_info *); |
| 1478 | . |
| 1479 | . bfd_boolean (*_bfd_coff_print_pdata) |
| 1480 | . (bfd *, void *); |
| 1481 | . |
| 1482 | .} bfd_coff_backend_data; |
| 1483 | . |
| 1484 | .#define coff_backend_info(abfd) \ |
| 1485 | . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data) |
| 1486 | . |
| 1487 | .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \ |
| 1488 | . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i)) |
| 1489 | . |
| 1490 | .#define bfd_coff_swap_sym_in(a,e,i) \ |
| 1491 | . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i)) |
| 1492 | . |
| 1493 | .#define bfd_coff_swap_lineno_in(a,e,i) \ |
| 1494 | . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i)) |
| 1495 | . |
| 1496 | .#define bfd_coff_swap_reloc_out(abfd, i, o) \ |
| 1497 | . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o)) |
| 1498 | . |
| 1499 | .#define bfd_coff_swap_lineno_out(abfd, i, o) \ |
| 1500 | . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o)) |
| 1501 | . |
| 1502 | .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \ |
| 1503 | . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o)) |
| 1504 | . |
| 1505 | .#define bfd_coff_swap_sym_out(abfd, i,o) \ |
| 1506 | . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o)) |
| 1507 | . |
| 1508 | .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \ |
| 1509 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o)) |
| 1510 | . |
| 1511 | .#define bfd_coff_swap_filehdr_out(abfd, i,o) \ |
| 1512 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o)) |
| 1513 | . |
| 1514 | .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \ |
| 1515 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o)) |
| 1516 | . |
| 1517 | .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz) |
| 1518 | .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz) |
| 1519 | .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz) |
| 1520 | .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz) |
| 1521 | .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz) |
| 1522 | .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz) |
| 1523 | .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz) |
| 1524 | .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen) |
| 1525 | .#define bfd_coff_long_filenames(abfd) \ |
| 1526 | . (coff_backend_info (abfd)->_bfd_coff_long_filenames) |
| 1527 | .#define bfd_coff_long_section_names(abfd) \ |
| 1528 | . (coff_backend_info (abfd)->_bfd_coff_long_section_names) |
| 1529 | .#define bfd_coff_set_long_section_names(abfd, enable) \ |
| 1530 | . ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable)) |
| 1531 | .#define bfd_coff_default_section_alignment_power(abfd) \ |
| 1532 | . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power) |
| 1533 | .#define bfd_coff_swap_filehdr_in(abfd, i,o) \ |
| 1534 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o)) |
| 1535 | . |
| 1536 | .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \ |
| 1537 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o)) |
| 1538 | . |
| 1539 | .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \ |
| 1540 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o)) |
| 1541 | . |
| 1542 | .#define bfd_coff_swap_reloc_in(abfd, i, o) \ |
| 1543 | . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o)) |
| 1544 | . |
| 1545 | .#define bfd_coff_bad_format_hook(abfd, filehdr) \ |
| 1546 | . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr)) |
| 1547 | . |
| 1548 | .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\ |
| 1549 | . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr)) |
| 1550 | .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\ |
| 1551 | . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\ |
| 1552 | . (abfd, filehdr, aouthdr)) |
| 1553 | . |
| 1554 | .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\ |
| 1555 | . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\ |
| 1556 | . (abfd, scnhdr, name, section, flags_ptr)) |
| 1557 | . |
| 1558 | .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\ |
| 1559 | . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr)) |
| 1560 | . |
| 1561 | .#define bfd_coff_slurp_symbol_table(abfd)\ |
| 1562 | . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd)) |
| 1563 | . |
| 1564 | .#define bfd_coff_symname_in_debug(abfd, sym)\ |
| 1565 | . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym)) |
| 1566 | . |
| 1567 | .#define bfd_coff_force_symnames_in_strings(abfd)\ |
| 1568 | . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings) |
| 1569 | . |
| 1570 | .#define bfd_coff_debug_string_prefix_length(abfd)\ |
| 1571 | . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length) |
| 1572 | . |
| 1573 | .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\ |
| 1574 | . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\ |
| 1575 | . (abfd, file, base, symbol, aux, indaux)) |
| 1576 | . |
| 1577 | .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\ |
| 1578 | . reloc, data, src_ptr, dst_ptr)\ |
| 1579 | . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\ |
| 1580 | . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)) |
| 1581 | . |
| 1582 | .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\ |
| 1583 | . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\ |
| 1584 | . (abfd, section, reloc, shrink, link_info)) |
| 1585 | . |
| 1586 | .#define bfd_coff_classify_symbol(abfd, sym)\ |
| 1587 | . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\ |
| 1588 | . (abfd, sym)) |
| 1589 | . |
| 1590 | .#define bfd_coff_compute_section_file_positions(abfd)\ |
| 1591 | . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\ |
| 1592 | . (abfd)) |
| 1593 | . |
| 1594 | .#define bfd_coff_start_final_link(obfd, info)\ |
| 1595 | . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\ |
| 1596 | . (obfd, info)) |
| 1597 | .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\ |
| 1598 | . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\ |
| 1599 | . (obfd, info, ibfd, o, con, rel, isyms, secs)) |
| 1600 | .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\ |
| 1601 | . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\ |
| 1602 | . (abfd, sec, rel, h, sym, addendp)) |
| 1603 | .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\ |
| 1604 | . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\ |
| 1605 | . (obfd, info, ibfd, sec, rel, adjustedp)) |
| 1606 | .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\ |
| 1607 | . value, string, cp, coll, hashp)\ |
| 1608 | . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\ |
| 1609 | . (info, abfd, name, flags, section, value, string, cp, coll, hashp)) |
| 1610 | . |
| 1611 | .#define bfd_coff_link_output_has_begun(a,p) \ |
| 1612 | . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p)) |
| 1613 | .#define bfd_coff_final_link_postscript(a,p) \ |
| 1614 | . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p)) |
| 1615 | . |
| 1616 | .#define bfd_coff_have_print_pdata(a) \ |
| 1617 | . (coff_backend_info (a)->_bfd_coff_print_pdata) |
| 1618 | .#define bfd_coff_print_pdata(a,p) \ |
| 1619 | . ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p)) |
| 1620 | . |
| 1621 | .{* Macro: Returns true if the bfd is a PE executable as opposed to a |
| 1622 | . PE object file. *} |
| 1623 | .#define bfd_pei_p(abfd) \ |
| 1624 | . (CONST_STRNEQ ((abfd)->xvec->name, "pei-")) |
| 1625 | */ |
| 1626 | |
| 1627 | /* See whether the magic number matches. */ |
| 1628 | |
| 1629 | static bfd_boolean |
| 1630 | coff_bad_format_hook (bfd * abfd ATTRIBUTE_UNUSED, void * filehdr) |
| 1631 | { |
| 1632 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 1633 | |
| 1634 | if (BADMAG (*internal_f)) |
| 1635 | return FALSE; |
| 1636 | |
| 1637 | /* If the optional header is NULL or not the correct size then |
| 1638 | quit; the only difference I can see between m88k dgux headers (MC88DMAGIC) |
| 1639 | and Intel 960 readwrite headers (I960WRMAGIC) is that the |
| 1640 | optional header is of a different size. |
| 1641 | |
| 1642 | But the mips keeps extra stuff in it's opthdr, so dont check |
| 1643 | when doing that. */ |
| 1644 | |
| 1645 | #if defined(M88) || defined(I960) |
| 1646 | if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr) |
| 1647 | return FALSE; |
| 1648 | #endif |
| 1649 | |
| 1650 | return TRUE; |
| 1651 | } |
| 1652 | |
| 1653 | #ifdef TICOFF |
| 1654 | static bfd_boolean |
| 1655 | ticoff0_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr) |
| 1656 | { |
| 1657 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 1658 | |
| 1659 | if (COFF0_BADMAG (*internal_f)) |
| 1660 | return FALSE; |
| 1661 | |
| 1662 | return TRUE; |
| 1663 | } |
| 1664 | #endif |
| 1665 | |
| 1666 | #ifdef TICOFF |
| 1667 | static bfd_boolean |
| 1668 | ticoff1_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr) |
| 1669 | { |
| 1670 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 1671 | |
| 1672 | if (COFF1_BADMAG (*internal_f)) |
| 1673 | return FALSE; |
| 1674 | |
| 1675 | return TRUE; |
| 1676 | } |
| 1677 | #endif |
| 1678 | |
| 1679 | /* Check whether this section uses an alignment other than the |
| 1680 | default. */ |
| 1681 | |
| 1682 | static void |
| 1683 | coff_set_custom_section_alignment (bfd *abfd ATTRIBUTE_UNUSED, |
| 1684 | asection *section, |
| 1685 | const struct coff_section_alignment_entry *alignment_table, |
| 1686 | const unsigned int table_size) |
| 1687 | { |
| 1688 | const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER; |
| 1689 | unsigned int i; |
| 1690 | |
| 1691 | for (i = 0; i < table_size; ++i) |
| 1692 | { |
| 1693 | const char *secname = bfd_get_section_name (abfd, section); |
| 1694 | |
| 1695 | if (alignment_table[i].comparison_length == (unsigned int) -1 |
| 1696 | ? strcmp (alignment_table[i].name, secname) == 0 |
| 1697 | : strncmp (alignment_table[i].name, secname, |
| 1698 | alignment_table[i].comparison_length) == 0) |
| 1699 | break; |
| 1700 | } |
| 1701 | if (i >= table_size) |
| 1702 | return; |
| 1703 | |
| 1704 | if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY |
| 1705 | && default_alignment < alignment_table[i].default_alignment_min) |
| 1706 | return; |
| 1707 | |
| 1708 | if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY |
| 1709 | #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0 |
| 1710 | && default_alignment > alignment_table[i].default_alignment_max |
| 1711 | #endif |
| 1712 | ) |
| 1713 | return; |
| 1714 | |
| 1715 | section->alignment_power = alignment_table[i].alignment_power; |
| 1716 | } |
| 1717 | |
| 1718 | /* Custom section alignment records. */ |
| 1719 | |
| 1720 | static const struct coff_section_alignment_entry |
| 1721 | coff_section_alignment_table[] = |
| 1722 | { |
| 1723 | #ifdef COFF_SECTION_ALIGNMENT_ENTRIES |
| 1724 | COFF_SECTION_ALIGNMENT_ENTRIES, |
| 1725 | #endif |
| 1726 | /* There must not be any gaps between .stabstr sections. */ |
| 1727 | { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"), |
| 1728 | 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, |
| 1729 | /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */ |
| 1730 | { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"), |
| 1731 | 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, |
| 1732 | /* Similarly for the .ctors and .dtors sections. */ |
| 1733 | { COFF_SECTION_NAME_EXACT_MATCH (".ctors"), |
| 1734 | 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, |
| 1735 | { COFF_SECTION_NAME_EXACT_MATCH (".dtors"), |
| 1736 | 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 } |
| 1737 | }; |
| 1738 | |
| 1739 | static const unsigned int coff_section_alignment_table_size = |
| 1740 | sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0]; |
| 1741 | |
| 1742 | /* Initialize a section structure with information peculiar to this |
| 1743 | particular implementation of COFF. */ |
| 1744 | |
| 1745 | static bfd_boolean |
| 1746 | coff_new_section_hook (bfd * abfd, asection * section) |
| 1747 | { |
| 1748 | combined_entry_type *native; |
| 1749 | bfd_size_type amt; |
| 1750 | unsigned char sclass = C_STAT; |
| 1751 | |
| 1752 | section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER; |
| 1753 | |
| 1754 | #ifdef RS6000COFF_C |
| 1755 | if (bfd_xcoff_text_align_power (abfd) != 0 |
| 1756 | && strcmp (bfd_get_section_name (abfd, section), ".text") == 0) |
| 1757 | section->alignment_power = bfd_xcoff_text_align_power (abfd); |
| 1758 | else if (bfd_xcoff_data_align_power (abfd) != 0 |
| 1759 | && strcmp (bfd_get_section_name (abfd, section), ".data") == 0) |
| 1760 | section->alignment_power = bfd_xcoff_data_align_power (abfd); |
| 1761 | else |
| 1762 | { |
| 1763 | int i; |
| 1764 | |
| 1765 | for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++) |
| 1766 | if (strcmp (bfd_get_section_name (abfd, section), |
| 1767 | xcoff_dwsect_names[i].name) == 0) |
| 1768 | { |
| 1769 | section->alignment_power = 0; |
| 1770 | sclass = C_DWARF; |
| 1771 | break; |
| 1772 | } |
| 1773 | } |
| 1774 | #endif |
| 1775 | |
| 1776 | /* Set up the section symbol. */ |
| 1777 | if (!_bfd_generic_new_section_hook (abfd, section)) |
| 1778 | return FALSE; |
| 1779 | |
| 1780 | /* Allocate aux records for section symbols, to store size and |
| 1781 | related info. |
| 1782 | |
| 1783 | @@ The 10 is a guess at a plausible maximum number of aux entries |
| 1784 | (but shouldn't be a constant). */ |
| 1785 | amt = sizeof (combined_entry_type) * 10; |
| 1786 | native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
| 1787 | if (native == NULL) |
| 1788 | return FALSE; |
| 1789 | |
| 1790 | /* We don't need to set up n_name, n_value, or n_scnum in the native |
| 1791 | symbol information, since they'll be overridden by the BFD symbol |
| 1792 | anyhow. However, we do need to set the type and storage class, |
| 1793 | in case this symbol winds up getting written out. The value 0 |
| 1794 | for n_numaux is already correct. */ |
| 1795 | |
| 1796 | native->u.syment.n_type = T_NULL; |
| 1797 | native->u.syment.n_sclass = sclass; |
| 1798 | |
| 1799 | coffsymbol (section->symbol)->native = native; |
| 1800 | |
| 1801 | coff_set_custom_section_alignment (abfd, section, |
| 1802 | coff_section_alignment_table, |
| 1803 | coff_section_alignment_table_size); |
| 1804 | |
| 1805 | return TRUE; |
| 1806 | } |
| 1807 | |
| 1808 | #ifdef COFF_ALIGN_IN_SECTION_HEADER |
| 1809 | |
| 1810 | /* Set the alignment of a BFD section. */ |
| 1811 | |
| 1812 | static void |
| 1813 | coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED, |
| 1814 | asection * section, |
| 1815 | void * scnhdr) |
| 1816 | { |
| 1817 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
| 1818 | unsigned int i; |
| 1819 | |
| 1820 | #ifdef I960 |
| 1821 | /* Extract ALIGN from 2**ALIGN stored in section header. */ |
| 1822 | for (i = 0; i < 32; i++) |
| 1823 | if ((1 << i) >= hdr->s_align) |
| 1824 | break; |
| 1825 | #endif |
| 1826 | #ifdef TIC80COFF |
| 1827 | /* TI tools puts the alignment power in bits 8-11. */ |
| 1828 | i = (hdr->s_flags >> 8) & 0xF ; |
| 1829 | #endif |
| 1830 | #ifdef COFF_DECODE_ALIGNMENT |
| 1831 | i = COFF_DECODE_ALIGNMENT(hdr->s_flags); |
| 1832 | #endif |
| 1833 | section->alignment_power = i; |
| 1834 | |
| 1835 | #ifdef coff_set_section_load_page |
| 1836 | coff_set_section_load_page (section, hdr->s_page); |
| 1837 | #endif |
| 1838 | } |
| 1839 | |
| 1840 | #else /* ! COFF_ALIGN_IN_SECTION_HEADER */ |
| 1841 | #ifdef COFF_WITH_PE |
| 1842 | |
| 1843 | static void |
| 1844 | coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED, |
| 1845 | asection * section, |
| 1846 | void * scnhdr) |
| 1847 | { |
| 1848 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
| 1849 | bfd_size_type amt; |
| 1850 | unsigned int alignment_power_const |
| 1851 | = hdr->s_flags & IMAGE_SCN_ALIGN_POWER_BIT_MASK; |
| 1852 | |
| 1853 | switch (alignment_power_const) |
| 1854 | { |
| 1855 | case IMAGE_SCN_ALIGN_8192BYTES: |
| 1856 | case IMAGE_SCN_ALIGN_4096BYTES: |
| 1857 | case IMAGE_SCN_ALIGN_2048BYTES: |
| 1858 | case IMAGE_SCN_ALIGN_1024BYTES: |
| 1859 | case IMAGE_SCN_ALIGN_512BYTES: |
| 1860 | case IMAGE_SCN_ALIGN_256BYTES: |
| 1861 | case IMAGE_SCN_ALIGN_128BYTES: |
| 1862 | case IMAGE_SCN_ALIGN_64BYTES: |
| 1863 | case IMAGE_SCN_ALIGN_32BYTES: |
| 1864 | case IMAGE_SCN_ALIGN_16BYTES: |
| 1865 | case IMAGE_SCN_ALIGN_8BYTES: |
| 1866 | case IMAGE_SCN_ALIGN_4BYTES: |
| 1867 | case IMAGE_SCN_ALIGN_2BYTES: |
| 1868 | case IMAGE_SCN_ALIGN_1BYTES: |
| 1869 | section->alignment_power |
| 1870 | = IMAGE_SCN_ALIGN_POWER_NUM (alignment_power_const); |
| 1871 | break; |
| 1872 | default: |
| 1873 | break; |
| 1874 | } |
| 1875 | |
| 1876 | /* In a PE image file, the s_paddr field holds the virtual size of a |
| 1877 | section, while the s_size field holds the raw size. We also keep |
| 1878 | the original section flag value, since not every bit can be |
| 1879 | mapped onto a generic BFD section bit. */ |
| 1880 | if (coff_section_data (abfd, section) == NULL) |
| 1881 | { |
| 1882 | amt = sizeof (struct coff_section_tdata); |
| 1883 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
| 1884 | if (section->used_by_bfd == NULL) |
| 1885 | /* FIXME: Return error. */ |
| 1886 | abort (); |
| 1887 | } |
| 1888 | |
| 1889 | if (pei_section_data (abfd, section) == NULL) |
| 1890 | { |
| 1891 | amt = sizeof (struct pei_section_tdata); |
| 1892 | coff_section_data (abfd, section)->tdata = bfd_zalloc (abfd, amt); |
| 1893 | if (coff_section_data (abfd, section)->tdata == NULL) |
| 1894 | /* FIXME: Return error. */ |
| 1895 | abort (); |
| 1896 | } |
| 1897 | pei_section_data (abfd, section)->virt_size = hdr->s_paddr; |
| 1898 | pei_section_data (abfd, section)->pe_flags = hdr->s_flags; |
| 1899 | |
| 1900 | section->lma = hdr->s_vaddr; |
| 1901 | |
| 1902 | /* Check for extended relocs. */ |
| 1903 | if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL) |
| 1904 | { |
| 1905 | struct external_reloc dst; |
| 1906 | struct internal_reloc n; |
| 1907 | file_ptr oldpos = bfd_tell (abfd); |
| 1908 | bfd_size_type relsz = bfd_coff_relsz (abfd); |
| 1909 | |
| 1910 | if (bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0) != 0) |
| 1911 | return; |
| 1912 | if (bfd_bread (& dst, relsz, abfd) != relsz) |
| 1913 | return; |
| 1914 | |
| 1915 | coff_swap_reloc_in (abfd, &dst, &n); |
| 1916 | if (bfd_seek (abfd, oldpos, 0) != 0) |
| 1917 | return; |
| 1918 | section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1; |
| 1919 | section->rel_filepos += relsz; |
| 1920 | } |
| 1921 | else if (hdr->s_nreloc == 0xffff) |
| 1922 | (*_bfd_error_handler) |
| 1923 | ("%s: warning: claims to have 0xffff relocs, without overflow", |
| 1924 | bfd_get_filename (abfd)); |
| 1925 | } |
| 1926 | #undef ALIGN_SET |
| 1927 | #undef ELIFALIGN_SET |
| 1928 | |
| 1929 | #else /* ! COFF_WITH_PE */ |
| 1930 | #ifdef RS6000COFF_C |
| 1931 | |
| 1932 | /* We grossly abuse this function to handle XCOFF overflow headers. |
| 1933 | When we see one, we correct the reloc and line number counts in the |
| 1934 | real header, and remove the section we just created. */ |
| 1935 | |
| 1936 | static void |
| 1937 | coff_set_alignment_hook (bfd *abfd, asection *section, void * scnhdr) |
| 1938 | { |
| 1939 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
| 1940 | asection *real_sec; |
| 1941 | |
| 1942 | if ((hdr->s_flags & STYP_OVRFLO) == 0) |
| 1943 | return; |
| 1944 | |
| 1945 | real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc); |
| 1946 | if (real_sec == NULL) |
| 1947 | return; |
| 1948 | |
| 1949 | real_sec->reloc_count = hdr->s_paddr; |
| 1950 | real_sec->lineno_count = hdr->s_vaddr; |
| 1951 | |
| 1952 | if (!bfd_section_removed_from_list (abfd, section)) |
| 1953 | { |
| 1954 | bfd_section_list_remove (abfd, section); |
| 1955 | --abfd->section_count; |
| 1956 | } |
| 1957 | } |
| 1958 | |
| 1959 | #else /* ! RS6000COFF_C */ |
| 1960 | |
| 1961 | #define coff_set_alignment_hook \ |
| 1962 | ((void (*) (bfd *, asection *, void *)) bfd_void) |
| 1963 | |
| 1964 | #endif /* ! RS6000COFF_C */ |
| 1965 | #endif /* ! COFF_WITH_PE */ |
| 1966 | #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */ |
| 1967 | |
| 1968 | #ifndef coff_mkobject |
| 1969 | |
| 1970 | static bfd_boolean |
| 1971 | coff_mkobject (bfd * abfd) |
| 1972 | { |
| 1973 | coff_data_type *coff; |
| 1974 | bfd_size_type amt = sizeof (coff_data_type); |
| 1975 | |
| 1976 | abfd->tdata.coff_obj_data = bfd_zalloc (abfd, amt); |
| 1977 | if (abfd->tdata.coff_obj_data == NULL) |
| 1978 | return FALSE; |
| 1979 | coff = coff_data (abfd); |
| 1980 | coff->symbols = NULL; |
| 1981 | coff->conversion_table = NULL; |
| 1982 | coff->raw_syments = NULL; |
| 1983 | coff->relocbase = 0; |
| 1984 | coff->local_toc_sym_map = 0; |
| 1985 | |
| 1986 | /* make_abs_section(abfd);*/ |
| 1987 | |
| 1988 | return TRUE; |
| 1989 | } |
| 1990 | #endif |
| 1991 | |
| 1992 | /* Create the COFF backend specific information. */ |
| 1993 | |
| 1994 | #ifndef coff_mkobject_hook |
| 1995 | static void * |
| 1996 | coff_mkobject_hook (bfd * abfd, |
| 1997 | void * filehdr, |
| 1998 | void * aouthdr ATTRIBUTE_UNUSED) |
| 1999 | { |
| 2000 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 2001 | coff_data_type *coff; |
| 2002 | |
| 2003 | if (! coff_mkobject (abfd)) |
| 2004 | return NULL; |
| 2005 | |
| 2006 | coff = coff_data (abfd); |
| 2007 | |
| 2008 | coff->sym_filepos = internal_f->f_symptr; |
| 2009 | |
| 2010 | /* These members communicate important constants about the symbol |
| 2011 | table to GDB's symbol-reading code. These `constants' |
| 2012 | unfortunately vary among coff implementations... */ |
| 2013 | coff->local_n_btmask = N_BTMASK; |
| 2014 | coff->local_n_btshft = N_BTSHFT; |
| 2015 | coff->local_n_tmask = N_TMASK; |
| 2016 | coff->local_n_tshift = N_TSHIFT; |
| 2017 | coff->local_symesz = bfd_coff_symesz (abfd); |
| 2018 | coff->local_auxesz = bfd_coff_auxesz (abfd); |
| 2019 | coff->local_linesz = bfd_coff_linesz (abfd); |
| 2020 | |
| 2021 | coff->timestamp = internal_f->f_timdat; |
| 2022 | |
| 2023 | obj_raw_syment_count (abfd) = |
| 2024 | obj_conv_table_size (abfd) = |
| 2025 | internal_f->f_nsyms; |
| 2026 | |
| 2027 | #ifdef RS6000COFF_C |
| 2028 | if ((internal_f->f_flags & F_SHROBJ) != 0) |
| 2029 | abfd->flags |= DYNAMIC; |
| 2030 | if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd)) |
| 2031 | { |
| 2032 | struct internal_aouthdr *internal_a = |
| 2033 | (struct internal_aouthdr *) aouthdr; |
| 2034 | struct xcoff_tdata *xcoff; |
| 2035 | |
| 2036 | xcoff = xcoff_data (abfd); |
| 2037 | # ifdef U803XTOCMAGIC |
| 2038 | xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC; |
| 2039 | # else |
| 2040 | xcoff->xcoff64 = 0; |
| 2041 | # endif |
| 2042 | xcoff->full_aouthdr = TRUE; |
| 2043 | xcoff->toc = internal_a->o_toc; |
| 2044 | xcoff->sntoc = internal_a->o_sntoc; |
| 2045 | xcoff->snentry = internal_a->o_snentry; |
| 2046 | bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext; |
| 2047 | bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata; |
| 2048 | xcoff->modtype = internal_a->o_modtype; |
| 2049 | xcoff->cputype = internal_a->o_cputype; |
| 2050 | xcoff->maxdata = internal_a->o_maxdata; |
| 2051 | xcoff->maxstack = internal_a->o_maxstack; |
| 2052 | } |
| 2053 | #endif |
| 2054 | |
| 2055 | #ifdef ARM |
| 2056 | /* Set the flags field from the COFF header read in. */ |
| 2057 | if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags)) |
| 2058 | coff->flags = 0; |
| 2059 | #endif |
| 2060 | |
| 2061 | #ifdef COFF_WITH_PE |
| 2062 | /* FIXME: I'm not sure this is ever executed, since peicode.h |
| 2063 | defines coff_mkobject_hook. */ |
| 2064 | if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0) |
| 2065 | abfd->flags |= HAS_DEBUG; |
| 2066 | #endif |
| 2067 | |
| 2068 | if ((internal_f->f_flags & F_GO32STUB) != 0) |
| 2069 | coff->go32stub = (char *) bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE); |
| 2070 | if (coff->go32stub != NULL) |
| 2071 | memcpy (coff->go32stub, internal_f->go32stub, GO32_STUBSIZE); |
| 2072 | |
| 2073 | return coff; |
| 2074 | } |
| 2075 | #endif |
| 2076 | |
| 2077 | /* Determine the machine architecture and type. FIXME: This is target |
| 2078 | dependent because the magic numbers are defined in the target |
| 2079 | dependent header files. But there is no particular need for this. |
| 2080 | If the magic numbers were moved to a separate file, this function |
| 2081 | would be target independent and would also be much more successful |
| 2082 | at linking together COFF files for different architectures. */ |
| 2083 | |
| 2084 | static bfd_boolean |
| 2085 | coff_set_arch_mach_hook (bfd *abfd, void * filehdr) |
| 2086 | { |
| 2087 | unsigned long machine; |
| 2088 | enum bfd_architecture arch; |
| 2089 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
| 2090 | |
| 2091 | /* Zero selects the default machine for an arch. */ |
| 2092 | machine = 0; |
| 2093 | switch (internal_f->f_magic) |
| 2094 | { |
| 2095 | #ifdef OR32_MAGIC_BIG |
| 2096 | case OR32_MAGIC_BIG: |
| 2097 | case OR32_MAGIC_LITTLE: |
| 2098 | arch = bfd_arch_or32; |
| 2099 | break; |
| 2100 | #endif |
| 2101 | #ifdef PPCMAGIC |
| 2102 | case PPCMAGIC: |
| 2103 | arch = bfd_arch_powerpc; |
| 2104 | break; |
| 2105 | #endif |
| 2106 | #ifdef I386MAGIC |
| 2107 | case I386MAGIC: |
| 2108 | case I386PTXMAGIC: |
| 2109 | case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler. */ |
| 2110 | case LYNXCOFFMAGIC: /* Shadows the m68k Lynx number below, sigh. */ |
| 2111 | arch = bfd_arch_i386; |
| 2112 | break; |
| 2113 | #endif |
| 2114 | #ifdef AMD64MAGIC |
| 2115 | case AMD64MAGIC: |
| 2116 | arch = bfd_arch_i386; |
| 2117 | machine = bfd_mach_x86_64; |
| 2118 | break; |
| 2119 | #endif |
| 2120 | #ifdef IA64MAGIC |
| 2121 | case IA64MAGIC: |
| 2122 | arch = bfd_arch_ia64; |
| 2123 | break; |
| 2124 | #endif |
| 2125 | #ifdef ARMMAGIC |
| 2126 | case ARMMAGIC: |
| 2127 | case ARMPEMAGIC: |
| 2128 | case THUMBPEMAGIC: |
| 2129 | arch = bfd_arch_arm; |
| 2130 | machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
| 2131 | if (machine == bfd_mach_arm_unknown) |
| 2132 | { |
| 2133 | switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK) |
| 2134 | { |
| 2135 | case F_ARM_2: machine = bfd_mach_arm_2; break; |
| 2136 | case F_ARM_2a: machine = bfd_mach_arm_2a; break; |
| 2137 | case F_ARM_3: machine = bfd_mach_arm_3; break; |
| 2138 | default: |
| 2139 | case F_ARM_3M: machine = bfd_mach_arm_3M; break; |
| 2140 | case F_ARM_4: machine = bfd_mach_arm_4; break; |
| 2141 | case F_ARM_4T: machine = bfd_mach_arm_4T; break; |
| 2142 | /* The COFF header does not have enough bits available |
| 2143 | to cover all the different ARM architectures. So |
| 2144 | we interpret F_ARM_5, the highest flag value to mean |
| 2145 | "the highest ARM architecture known to BFD" which is |
| 2146 | currently the XScale. */ |
| 2147 | case F_ARM_5: machine = bfd_mach_arm_XScale; break; |
| 2148 | } |
| 2149 | } |
| 2150 | break; |
| 2151 | #endif |
| 2152 | #ifdef MC68MAGIC |
| 2153 | case MC68MAGIC: |
| 2154 | case M68MAGIC: |
| 2155 | #ifdef MC68KBCSMAGIC |
| 2156 | case MC68KBCSMAGIC: |
| 2157 | #endif |
| 2158 | #ifdef APOLLOM68KMAGIC |
| 2159 | case APOLLOM68KMAGIC: |
| 2160 | #endif |
| 2161 | #ifdef LYNXCOFFMAGIC |
| 2162 | case LYNXCOFFMAGIC: |
| 2163 | #endif |
| 2164 | arch = bfd_arch_m68k; |
| 2165 | machine = bfd_mach_m68020; |
| 2166 | break; |
| 2167 | #endif |
| 2168 | #ifdef MC88MAGIC |
| 2169 | case MC88MAGIC: |
| 2170 | case MC88DMAGIC: |
| 2171 | case MC88OMAGIC: |
| 2172 | arch = bfd_arch_m88k; |
| 2173 | machine = 88100; |
| 2174 | break; |
| 2175 | #endif |
| 2176 | #ifdef Z80MAGIC |
| 2177 | case Z80MAGIC: |
| 2178 | arch = bfd_arch_z80; |
| 2179 | switch (internal_f->f_flags & F_MACHMASK) |
| 2180 | { |
| 2181 | case 0: |
| 2182 | case bfd_mach_z80strict << 12: |
| 2183 | case bfd_mach_z80 << 12: |
| 2184 | case bfd_mach_z80full << 12: |
| 2185 | case bfd_mach_r800 << 12: |
| 2186 | machine = ((unsigned)internal_f->f_flags & F_MACHMASK) >> 12; |
| 2187 | break; |
| 2188 | default: |
| 2189 | return FALSE; |
| 2190 | } |
| 2191 | break; |
| 2192 | #endif |
| 2193 | #ifdef Z8KMAGIC |
| 2194 | case Z8KMAGIC: |
| 2195 | arch = bfd_arch_z8k; |
| 2196 | switch (internal_f->f_flags & F_MACHMASK) |
| 2197 | { |
| 2198 | case F_Z8001: |
| 2199 | machine = bfd_mach_z8001; |
| 2200 | break; |
| 2201 | case F_Z8002: |
| 2202 | machine = bfd_mach_z8002; |
| 2203 | break; |
| 2204 | default: |
| 2205 | return FALSE; |
| 2206 | } |
| 2207 | break; |
| 2208 | #endif |
| 2209 | #ifdef I860 |
| 2210 | case I860MAGIC: |
| 2211 | arch = bfd_arch_i860; |
| 2212 | break; |
| 2213 | #endif |
| 2214 | #ifdef I960 |
| 2215 | #ifdef I960ROMAGIC |
| 2216 | case I960ROMAGIC: |
| 2217 | case I960RWMAGIC: |
| 2218 | arch = bfd_arch_i960; |
| 2219 | switch (F_I960TYPE & internal_f->f_flags) |
| 2220 | { |
| 2221 | default: |
| 2222 | case F_I960CORE: |
| 2223 | machine = bfd_mach_i960_core; |
| 2224 | break; |
| 2225 | case F_I960KB: |
| 2226 | machine = bfd_mach_i960_kb_sb; |
| 2227 | break; |
| 2228 | case F_I960MC: |
| 2229 | machine = bfd_mach_i960_mc; |
| 2230 | break; |
| 2231 | case F_I960XA: |
| 2232 | machine = bfd_mach_i960_xa; |
| 2233 | break; |
| 2234 | case F_I960CA: |
| 2235 | machine = bfd_mach_i960_ca; |
| 2236 | break; |
| 2237 | case F_I960KA: |
| 2238 | machine = bfd_mach_i960_ka_sa; |
| 2239 | break; |
| 2240 | case F_I960JX: |
| 2241 | machine = bfd_mach_i960_jx; |
| 2242 | break; |
| 2243 | case F_I960HX: |
| 2244 | machine = bfd_mach_i960_hx; |
| 2245 | break; |
| 2246 | } |
| 2247 | break; |
| 2248 | #endif |
| 2249 | #endif |
| 2250 | |
| 2251 | #ifdef RS6000COFF_C |
| 2252 | #ifdef XCOFF64 |
| 2253 | case U64_TOCMAGIC: |
| 2254 | case U803XTOCMAGIC: |
| 2255 | #else |
| 2256 | case U802ROMAGIC: |
| 2257 | case U802WRMAGIC: |
| 2258 | case U802TOCMAGIC: |
| 2259 | #endif |
| 2260 | { |
| 2261 | int cputype; |
| 2262 | |
| 2263 | if (xcoff_data (abfd)->cputype != -1) |
| 2264 | cputype = xcoff_data (abfd)->cputype & 0xff; |
| 2265 | else |
| 2266 | { |
| 2267 | /* We did not get a value from the a.out header. If the |
| 2268 | file has not been stripped, we may be able to get the |
| 2269 | architecture information from the first symbol, if it |
| 2270 | is a .file symbol. */ |
| 2271 | if (obj_raw_syment_count (abfd) == 0) |
| 2272 | cputype = 0; |
| 2273 | else |
| 2274 | { |
| 2275 | bfd_byte *buf; |
| 2276 | struct internal_syment sym; |
| 2277 | bfd_size_type amt = bfd_coff_symesz (abfd); |
| 2278 | |
| 2279 | buf = bfd_malloc (amt); |
| 2280 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 |
| 2281 | || bfd_bread (buf, amt, abfd) != amt) |
| 2282 | { |
| 2283 | free (buf); |
| 2284 | return FALSE; |
| 2285 | } |
| 2286 | bfd_coff_swap_sym_in (abfd, buf, & sym); |
| 2287 | if (sym.n_sclass == C_FILE) |
| 2288 | cputype = sym.n_type & 0xff; |
| 2289 | else |
| 2290 | cputype = 0; |
| 2291 | free (buf); |
| 2292 | } |
| 2293 | } |
| 2294 | |
| 2295 | /* FIXME: We don't handle all cases here. */ |
| 2296 | switch (cputype) |
| 2297 | { |
| 2298 | default: |
| 2299 | case 0: |
| 2300 | arch = bfd_xcoff_architecture (abfd); |
| 2301 | machine = bfd_xcoff_machine (abfd); |
| 2302 | break; |
| 2303 | |
| 2304 | case 1: |
| 2305 | arch = bfd_arch_powerpc; |
| 2306 | machine = bfd_mach_ppc_601; |
| 2307 | break; |
| 2308 | case 2: /* 64 bit PowerPC */ |
| 2309 | arch = bfd_arch_powerpc; |
| 2310 | machine = bfd_mach_ppc_620; |
| 2311 | break; |
| 2312 | case 3: |
| 2313 | arch = bfd_arch_powerpc; |
| 2314 | machine = bfd_mach_ppc; |
| 2315 | break; |
| 2316 | case 4: |
| 2317 | arch = bfd_arch_rs6000; |
| 2318 | machine = bfd_mach_rs6k; |
| 2319 | break; |
| 2320 | } |
| 2321 | } |
| 2322 | break; |
| 2323 | #endif |
| 2324 | |
| 2325 | #ifdef WE32KMAGIC |
| 2326 | case WE32KMAGIC: |
| 2327 | arch = bfd_arch_we32k; |
| 2328 | break; |
| 2329 | #endif |
| 2330 | |
| 2331 | #ifdef H8300MAGIC |
| 2332 | case H8300MAGIC: |
| 2333 | arch = bfd_arch_h8300; |
| 2334 | machine = bfd_mach_h8300; |
| 2335 | /* !! FIXME this probably isn't the right place for this. */ |
| 2336 | abfd->flags |= BFD_IS_RELAXABLE; |
| 2337 | break; |
| 2338 | #endif |
| 2339 | |
| 2340 | #ifdef H8300HMAGIC |
| 2341 | case H8300HMAGIC: |
| 2342 | arch = bfd_arch_h8300; |
| 2343 | machine = bfd_mach_h8300h; |
| 2344 | /* !! FIXME this probably isn't the right place for this. */ |
| 2345 | abfd->flags |= BFD_IS_RELAXABLE; |
| 2346 | break; |
| 2347 | #endif |
| 2348 | |
| 2349 | #ifdef H8300SMAGIC |
| 2350 | case H8300SMAGIC: |
| 2351 | arch = bfd_arch_h8300; |
| 2352 | machine = bfd_mach_h8300s; |
| 2353 | /* !! FIXME this probably isn't the right place for this. */ |
| 2354 | abfd->flags |= BFD_IS_RELAXABLE; |
| 2355 | break; |
| 2356 | #endif |
| 2357 | |
| 2358 | #ifdef H8300HNMAGIC |
| 2359 | case H8300HNMAGIC: |
| 2360 | arch = bfd_arch_h8300; |
| 2361 | machine = bfd_mach_h8300hn; |
| 2362 | /* !! FIXME this probably isn't the right place for this. */ |
| 2363 | abfd->flags |= BFD_IS_RELAXABLE; |
| 2364 | break; |
| 2365 | #endif |
| 2366 | |
| 2367 | #ifdef H8300SNMAGIC |
| 2368 | case H8300SNMAGIC: |
| 2369 | arch = bfd_arch_h8300; |
| 2370 | machine = bfd_mach_h8300sn; |
| 2371 | /* !! FIXME this probably isn't the right place for this. */ |
| 2372 | abfd->flags |= BFD_IS_RELAXABLE; |
| 2373 | break; |
| 2374 | #endif |
| 2375 | |
| 2376 | #ifdef SH_ARCH_MAGIC_BIG |
| 2377 | case SH_ARCH_MAGIC_BIG: |
| 2378 | case SH_ARCH_MAGIC_LITTLE: |
| 2379 | #ifdef COFF_WITH_PE |
| 2380 | case SH_ARCH_MAGIC_WINCE: |
| 2381 | #endif |
| 2382 | arch = bfd_arch_sh; |
| 2383 | break; |
| 2384 | #endif |
| 2385 | |
| 2386 | #ifdef MIPS_ARCH_MAGIC_WINCE |
| 2387 | case MIPS_ARCH_MAGIC_WINCE: |
| 2388 | arch = bfd_arch_mips; |
| 2389 | break; |
| 2390 | #endif |
| 2391 | |
| 2392 | #ifdef H8500MAGIC |
| 2393 | case H8500MAGIC: |
| 2394 | arch = bfd_arch_h8500; |
| 2395 | break; |
| 2396 | #endif |
| 2397 | |
| 2398 | #ifdef SPARCMAGIC |
| 2399 | case SPARCMAGIC: |
| 2400 | #ifdef LYNXCOFFMAGIC |
| 2401 | case LYNXCOFFMAGIC: |
| 2402 | #endif |
| 2403 | arch = bfd_arch_sparc; |
| 2404 | break; |
| 2405 | #endif |
| 2406 | |
| 2407 | #ifdef TIC30MAGIC |
| 2408 | case TIC30MAGIC: |
| 2409 | arch = bfd_arch_tic30; |
| 2410 | break; |
| 2411 | #endif |
| 2412 | |
| 2413 | #ifdef TICOFF0MAGIC |
| 2414 | #ifdef TICOFF_TARGET_ARCH |
| 2415 | /* This TI COFF section should be used by all new TI COFF v0 targets. */ |
| 2416 | case TICOFF0MAGIC: |
| 2417 | arch = TICOFF_TARGET_ARCH; |
| 2418 | machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags); |
| 2419 | break; |
| 2420 | #endif |
| 2421 | #endif |
| 2422 | |
| 2423 | #ifdef TICOFF1MAGIC |
| 2424 | /* This TI COFF section should be used by all new TI COFF v1/2 targets. */ |
| 2425 | /* TI COFF1 and COFF2 use the target_id field to specify which arch. */ |
| 2426 | case TICOFF1MAGIC: |
| 2427 | case TICOFF2MAGIC: |
| 2428 | switch (internal_f->f_target_id) |
| 2429 | { |
| 2430 | #ifdef TI_TARGET_ID |
| 2431 | case TI_TARGET_ID: |
| 2432 | arch = TICOFF_TARGET_ARCH; |
| 2433 | machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags); |
| 2434 | break; |
| 2435 | #endif |
| 2436 | default: |
| 2437 | arch = bfd_arch_obscure; |
| 2438 | (*_bfd_error_handler) |
| 2439 | (_("Unrecognized TI COFF target id '0x%x'"), |
| 2440 | internal_f->f_target_id); |
| 2441 | break; |
| 2442 | } |
| 2443 | break; |
| 2444 | #endif |
| 2445 | |
| 2446 | #ifdef TIC80_ARCH_MAGIC |
| 2447 | case TIC80_ARCH_MAGIC: |
| 2448 | arch = bfd_arch_tic80; |
| 2449 | break; |
| 2450 | #endif |
| 2451 | |
| 2452 | #ifdef MCOREMAGIC |
| 2453 | case MCOREMAGIC: |
| 2454 | arch = bfd_arch_mcore; |
| 2455 | break; |
| 2456 | #endif |
| 2457 | |
| 2458 | #ifdef W65MAGIC |
| 2459 | case W65MAGIC: |
| 2460 | arch = bfd_arch_w65; |
| 2461 | break; |
| 2462 | #endif |
| 2463 | |
| 2464 | default: /* Unreadable input file type. */ |
| 2465 | arch = bfd_arch_obscure; |
| 2466 | break; |
| 2467 | } |
| 2468 | |
| 2469 | bfd_default_set_arch_mach (abfd, arch, machine); |
| 2470 | return TRUE; |
| 2471 | } |
| 2472 | |
| 2473 | #ifdef SYMNAME_IN_DEBUG |
| 2474 | |
| 2475 | static bfd_boolean |
| 2476 | symname_in_debug_hook (bfd * abfd ATTRIBUTE_UNUSED, struct internal_syment *sym) |
| 2477 | { |
| 2478 | return SYMNAME_IN_DEBUG (sym) != 0; |
| 2479 | } |
| 2480 | |
| 2481 | #else |
| 2482 | |
| 2483 | #define symname_in_debug_hook \ |
| 2484 | (bfd_boolean (*) (bfd *, struct internal_syment *)) bfd_false |
| 2485 | |
| 2486 | #endif |
| 2487 | |
| 2488 | #ifdef RS6000COFF_C |
| 2489 | |
| 2490 | #ifdef XCOFF64 |
| 2491 | #define FORCE_SYMNAMES_IN_STRINGS |
| 2492 | #endif |
| 2493 | |
| 2494 | /* Handle the csect auxent of a C_EXT, C_AIX_WEAKEXT or C_HIDEXT symbol. */ |
| 2495 | |
| 2496 | static bfd_boolean |
| 2497 | coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED, |
| 2498 | combined_entry_type *table_base, |
| 2499 | combined_entry_type *symbol, |
| 2500 | unsigned int indaux, |
| 2501 | combined_entry_type *aux) |
| 2502 | { |
| 2503 | int n_sclass = symbol->u.syment.n_sclass; |
| 2504 | |
| 2505 | if (CSECT_SYM_P (n_sclass) |
| 2506 | && indaux + 1 == symbol->u.syment.n_numaux) |
| 2507 | { |
| 2508 | if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD) |
| 2509 | { |
| 2510 | aux->u.auxent.x_csect.x_scnlen.p = |
| 2511 | table_base + aux->u.auxent.x_csect.x_scnlen.l; |
| 2512 | aux->fix_scnlen = 1; |
| 2513 | } |
| 2514 | |
| 2515 | /* Return TRUE to indicate that the caller should not do any |
| 2516 | further work on this auxent. */ |
| 2517 | return TRUE; |
| 2518 | } |
| 2519 | |
| 2520 | /* Return FALSE to indicate that this auxent should be handled by |
| 2521 | the caller. */ |
| 2522 | return FALSE; |
| 2523 | } |
| 2524 | |
| 2525 | #else |
| 2526 | #ifdef I960 |
| 2527 | |
| 2528 | /* We don't want to pointerize bal entries. */ |
| 2529 | |
| 2530 | static bfd_boolean |
| 2531 | coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED, |
| 2532 | combined_entry_type *table_base ATTRIBUTE_UNUSED, |
| 2533 | combined_entry_type *symbol, |
| 2534 | unsigned int indaux, |
| 2535 | combined_entry_type *aux ATTRIBUTE_UNUSED) |
| 2536 | { |
| 2537 | /* Return TRUE if we don't want to pointerize this aux entry, which |
| 2538 | is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */ |
| 2539 | return (indaux == 1 |
| 2540 | && (symbol->u.syment.n_sclass == C_LEAFPROC |
| 2541 | || symbol->u.syment.n_sclass == C_LEAFSTAT |
| 2542 | || symbol->u.syment.n_sclass == C_LEAFEXT)); |
| 2543 | } |
| 2544 | |
| 2545 | #else /* ! I960 */ |
| 2546 | |
| 2547 | #define coff_pointerize_aux_hook 0 |
| 2548 | |
| 2549 | #endif /* ! I960 */ |
| 2550 | #endif /* ! RS6000COFF_C */ |
| 2551 | |
| 2552 | /* Print an aux entry. This returns TRUE if it has printed it. */ |
| 2553 | |
| 2554 | static bfd_boolean |
| 2555 | coff_print_aux (bfd *abfd ATTRIBUTE_UNUSED, |
| 2556 | FILE *file ATTRIBUTE_UNUSED, |
| 2557 | combined_entry_type *table_base ATTRIBUTE_UNUSED, |
| 2558 | combined_entry_type *symbol ATTRIBUTE_UNUSED, |
| 2559 | combined_entry_type *aux ATTRIBUTE_UNUSED, |
| 2560 | unsigned int indaux ATTRIBUTE_UNUSED) |
| 2561 | { |
| 2562 | #ifdef RS6000COFF_C |
| 2563 | if (CSECT_SYM_P (symbol->u.syment.n_sclass) |
| 2564 | && indaux + 1 == symbol->u.syment.n_numaux) |
| 2565 | { |
| 2566 | /* This is a csect entry. */ |
| 2567 | fprintf (file, "AUX "); |
| 2568 | if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD) |
| 2569 | { |
| 2570 | BFD_ASSERT (! aux->fix_scnlen); |
| 2571 | #ifdef XCOFF64 |
| 2572 | fprintf (file, "val %5lld", |
| 2573 | (long long) aux->u.auxent.x_csect.x_scnlen.l); |
| 2574 | #else |
| 2575 | fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l); |
| 2576 | #endif |
| 2577 | } |
| 2578 | else |
| 2579 | { |
| 2580 | fprintf (file, "indx "); |
| 2581 | if (! aux->fix_scnlen) |
| 2582 | #ifdef XCOFF64 |
| 2583 | fprintf (file, "%4lld", |
| 2584 | (long long) aux->u.auxent.x_csect.x_scnlen.l); |
| 2585 | #else |
| 2586 | fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l); |
| 2587 | #endif |
| 2588 | else |
| 2589 | fprintf (file, "%4ld", |
| 2590 | (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base)); |
| 2591 | } |
| 2592 | fprintf (file, |
| 2593 | " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u", |
| 2594 | aux->u.auxent.x_csect.x_parmhash, |
| 2595 | (unsigned int) aux->u.auxent.x_csect.x_snhash, |
| 2596 | SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp), |
| 2597 | SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp), |
| 2598 | (unsigned int) aux->u.auxent.x_csect.x_smclas, |
| 2599 | aux->u.auxent.x_csect.x_stab, |
| 2600 | (unsigned int) aux->u.auxent.x_csect.x_snstab); |
| 2601 | return TRUE; |
| 2602 | } |
| 2603 | #endif |
| 2604 | |
| 2605 | /* Return FALSE to indicate that no special action was taken. */ |
| 2606 | return FALSE; |
| 2607 | } |
| 2608 | |
| 2609 | /* |
| 2610 | SUBSUBSECTION |
| 2611 | Writing relocations |
| 2612 | |
| 2613 | To write relocations, the back end steps though the |
| 2614 | canonical relocation table and create an |
| 2615 | @code{internal_reloc}. The symbol index to use is removed from |
| 2616 | the @code{offset} field in the symbol table supplied. The |
| 2617 | address comes directly from the sum of the section base |
| 2618 | address and the relocation offset; the type is dug directly |
| 2619 | from the howto field. Then the @code{internal_reloc} is |
| 2620 | swapped into the shape of an @code{external_reloc} and written |
| 2621 | out to disk. |
| 2622 | |
| 2623 | */ |
| 2624 | |
| 2625 | #ifdef TARG_AUX |
| 2626 | |
| 2627 | |
| 2628 | /* AUX's ld wants relocations to be sorted. */ |
| 2629 | static int |
| 2630 | compare_arelent_ptr (const void * x, const void * y) |
| 2631 | { |
| 2632 | const arelent **a = (const arelent **) x; |
| 2633 | const arelent **b = (const arelent **) y; |
| 2634 | bfd_size_type aadr = (*a)->address; |
| 2635 | bfd_size_type badr = (*b)->address; |
| 2636 | |
| 2637 | return (aadr < badr ? -1 : badr < aadr ? 1 : 0); |
| 2638 | } |
| 2639 | |
| 2640 | #endif /* TARG_AUX */ |
| 2641 | |
| 2642 | static bfd_boolean |
| 2643 | coff_write_relocs (bfd * abfd, int first_undef) |
| 2644 | { |
| 2645 | asection *s; |
| 2646 | |
| 2647 | for (s = abfd->sections; s != NULL; s = s->next) |
| 2648 | { |
| 2649 | unsigned int i; |
| 2650 | struct external_reloc dst; |
| 2651 | arelent **p; |
| 2652 | |
| 2653 | #ifndef TARG_AUX |
| 2654 | p = s->orelocation; |
| 2655 | #else |
| 2656 | { |
| 2657 | /* Sort relocations before we write them out. */ |
| 2658 | bfd_size_type amt; |
| 2659 | |
| 2660 | amt = s->reloc_count; |
| 2661 | amt *= sizeof (arelent *); |
| 2662 | p = bfd_malloc (amt); |
| 2663 | if (p == NULL && s->reloc_count > 0) |
| 2664 | return FALSE; |
| 2665 | memcpy (p, s->orelocation, (size_t) amt); |
| 2666 | qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr); |
| 2667 | } |
| 2668 | #endif |
| 2669 | |
| 2670 | if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0) |
| 2671 | return FALSE; |
| 2672 | |
| 2673 | #ifdef COFF_WITH_PE |
| 2674 | if (obj_pe (abfd) && s->reloc_count >= 0xffff) |
| 2675 | { |
| 2676 | /* Encode real count here as first reloc. */ |
| 2677 | struct internal_reloc n; |
| 2678 | |
| 2679 | memset (& n, 0, sizeof (n)); |
| 2680 | /* Add one to count *this* reloc (grr). */ |
| 2681 | n.r_vaddr = s->reloc_count + 1; |
| 2682 | coff_swap_reloc_out (abfd, &n, &dst); |
| 2683 | if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd), |
| 2684 | abfd) != bfd_coff_relsz (abfd)) |
| 2685 | return FALSE; |
| 2686 | } |
| 2687 | #endif |
| 2688 | |
| 2689 | for (i = 0; i < s->reloc_count; i++) |
| 2690 | { |
| 2691 | struct internal_reloc n; |
| 2692 | arelent *q = p[i]; |
| 2693 | |
| 2694 | memset (& n, 0, sizeof (n)); |
| 2695 | |
| 2696 | /* Now we've renumbered the symbols we know where the |
| 2697 | undefined symbols live in the table. Check the reloc |
| 2698 | entries for symbols who's output bfd isn't the right one. |
| 2699 | This is because the symbol was undefined (which means |
| 2700 | that all the pointers are never made to point to the same |
| 2701 | place). This is a bad thing,'cause the symbols attached |
| 2702 | to the output bfd are indexed, so that the relocation |
| 2703 | entries know which symbol index they point to. So we |
| 2704 | have to look up the output symbol here. */ |
| 2705 | |
| 2706 | if (q->sym_ptr_ptr[0] != NULL && q->sym_ptr_ptr[0]->the_bfd != abfd) |
| 2707 | { |
| 2708 | int j; |
| 2709 | const char *sname = q->sym_ptr_ptr[0]->name; |
| 2710 | asymbol **outsyms = abfd->outsymbols; |
| 2711 | |
| 2712 | for (j = first_undef; outsyms[j]; j++) |
| 2713 | { |
| 2714 | const char *intable = outsyms[j]->name; |
| 2715 | |
| 2716 | if (strcmp (intable, sname) == 0) |
| 2717 | { |
| 2718 | /* Got a hit, so repoint the reloc. */ |
| 2719 | q->sym_ptr_ptr = outsyms + j; |
| 2720 | break; |
| 2721 | } |
| 2722 | } |
| 2723 | } |
| 2724 | |
| 2725 | n.r_vaddr = q->address + s->vma; |
| 2726 | |
| 2727 | #ifdef R_IHCONST |
| 2728 | /* The 29k const/consth reloc pair is a real kludge. The consth |
| 2729 | part doesn't have a symbol; it has an offset. So rebuilt |
| 2730 | that here. */ |
| 2731 | if (q->howto->type == R_IHCONST) |
| 2732 | n.r_symndx = q->addend; |
| 2733 | else |
| 2734 | #endif |
| 2735 | if (q->sym_ptr_ptr && q->sym_ptr_ptr[0] != NULL) |
| 2736 | { |
| 2737 | #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P |
| 2738 | if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q, s)) |
| 2739 | #else |
| 2740 | if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr |
| 2741 | && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0) |
| 2742 | #endif |
| 2743 | /* This is a relocation relative to the absolute symbol. */ |
| 2744 | n.r_symndx = -1; |
| 2745 | else |
| 2746 | { |
| 2747 | n.r_symndx = get_index ((*(q->sym_ptr_ptr))); |
| 2748 | /* Check to see if the symbol reloc points to a symbol |
| 2749 | we don't have in our symbol table. */ |
| 2750 | if (n.r_symndx > obj_conv_table_size (abfd)) |
| 2751 | { |
| 2752 | bfd_set_error (bfd_error_bad_value); |
| 2753 | _bfd_error_handler (_("%B: reloc against a non-existant symbol index: %ld"), |
| 2754 | abfd, n.r_symndx); |
| 2755 | return FALSE; |
| 2756 | } |
| 2757 | } |
| 2758 | } |
| 2759 | |
| 2760 | #ifdef SWAP_OUT_RELOC_OFFSET |
| 2761 | n.r_offset = q->addend; |
| 2762 | #endif |
| 2763 | |
| 2764 | #ifdef SELECT_RELOC |
| 2765 | /* Work out reloc type from what is required. */ |
| 2766 | SELECT_RELOC (n, q->howto); |
| 2767 | #else |
| 2768 | n.r_type = q->howto->type; |
| 2769 | #endif |
| 2770 | coff_swap_reloc_out (abfd, &n, &dst); |
| 2771 | |
| 2772 | if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd), |
| 2773 | abfd) != bfd_coff_relsz (abfd)) |
| 2774 | return FALSE; |
| 2775 | } |
| 2776 | |
| 2777 | #ifdef TARG_AUX |
| 2778 | if (p != NULL) |
| 2779 | free (p); |
| 2780 | #endif |
| 2781 | } |
| 2782 | |
| 2783 | return TRUE; |
| 2784 | } |
| 2785 | |
| 2786 | /* Set flags and magic number of a coff file from architecture and machine |
| 2787 | type. Result is TRUE if we can represent the arch&type, FALSE if not. */ |
| 2788 | |
| 2789 | static bfd_boolean |
| 2790 | coff_set_flags (bfd * abfd, |
| 2791 | unsigned int *magicp ATTRIBUTE_UNUSED, |
| 2792 | unsigned short *flagsp ATTRIBUTE_UNUSED) |
| 2793 | { |
| 2794 | switch (bfd_get_arch (abfd)) |
| 2795 | { |
| 2796 | #ifdef Z80MAGIC |
| 2797 | case bfd_arch_z80: |
| 2798 | *magicp = Z80MAGIC; |
| 2799 | switch (bfd_get_mach (abfd)) |
| 2800 | { |
| 2801 | case 0: |
| 2802 | case bfd_mach_z80strict: |
| 2803 | case bfd_mach_z80: |
| 2804 | case bfd_mach_z80full: |
| 2805 | case bfd_mach_r800: |
| 2806 | *flagsp = bfd_get_mach (abfd) << 12; |
| 2807 | break; |
| 2808 | default: |
| 2809 | return FALSE; |
| 2810 | } |
| 2811 | return TRUE; |
| 2812 | #endif |
| 2813 | |
| 2814 | #ifdef Z8KMAGIC |
| 2815 | case bfd_arch_z8k: |
| 2816 | *magicp = Z8KMAGIC; |
| 2817 | |
| 2818 | switch (bfd_get_mach (abfd)) |
| 2819 | { |
| 2820 | case bfd_mach_z8001: *flagsp = F_Z8001; break; |
| 2821 | case bfd_mach_z8002: *flagsp = F_Z8002; break; |
| 2822 | default: return FALSE; |
| 2823 | } |
| 2824 | return TRUE; |
| 2825 | #endif |
| 2826 | |
| 2827 | #ifdef I960ROMAGIC |
| 2828 | case bfd_arch_i960: |
| 2829 | |
| 2830 | { |
| 2831 | unsigned flags; |
| 2832 | |
| 2833 | *magicp = I960ROMAGIC; |
| 2834 | |
| 2835 | switch (bfd_get_mach (abfd)) |
| 2836 | { |
| 2837 | case bfd_mach_i960_core: flags = F_I960CORE; break; |
| 2838 | case bfd_mach_i960_kb_sb: flags = F_I960KB; break; |
| 2839 | case bfd_mach_i960_mc: flags = F_I960MC; break; |
| 2840 | case bfd_mach_i960_xa: flags = F_I960XA; break; |
| 2841 | case bfd_mach_i960_ca: flags = F_I960CA; break; |
| 2842 | case bfd_mach_i960_ka_sa: flags = F_I960KA; break; |
| 2843 | case bfd_mach_i960_jx: flags = F_I960JX; break; |
| 2844 | case bfd_mach_i960_hx: flags = F_I960HX; break; |
| 2845 | default: return FALSE; |
| 2846 | } |
| 2847 | *flagsp = flags; |
| 2848 | return TRUE; |
| 2849 | } |
| 2850 | break; |
| 2851 | #endif |
| 2852 | |
| 2853 | #ifdef TIC30MAGIC |
| 2854 | case bfd_arch_tic30: |
| 2855 | *magicp = TIC30MAGIC; |
| 2856 | return TRUE; |
| 2857 | #endif |
| 2858 | |
| 2859 | #ifdef TICOFF_DEFAULT_MAGIC |
| 2860 | case TICOFF_TARGET_ARCH: |
| 2861 | /* If there's no indication of which version we want, use the default. */ |
| 2862 | if (!abfd->xvec ) |
| 2863 | *magicp = TICOFF_DEFAULT_MAGIC; |
| 2864 | else |
| 2865 | { |
| 2866 | /* We may want to output in a different COFF version. */ |
| 2867 | switch (abfd->xvec->name[4]) |
| 2868 | { |
| 2869 | case '0': |
| 2870 | *magicp = TICOFF0MAGIC; |
| 2871 | break; |
| 2872 | case '1': |
| 2873 | *magicp = TICOFF1MAGIC; |
| 2874 | break; |
| 2875 | case '2': |
| 2876 | *magicp = TICOFF2MAGIC; |
| 2877 | break; |
| 2878 | default: |
| 2879 | return FALSE; |
| 2880 | } |
| 2881 | } |
| 2882 | TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd)); |
| 2883 | return TRUE; |
| 2884 | #endif |
| 2885 | |
| 2886 | #ifdef TIC80_ARCH_MAGIC |
| 2887 | case bfd_arch_tic80: |
| 2888 | *magicp = TIC80_ARCH_MAGIC; |
| 2889 | return TRUE; |
| 2890 | #endif |
| 2891 | |
| 2892 | #ifdef ARMMAGIC |
| 2893 | case bfd_arch_arm: |
| 2894 | #ifdef ARM_WINCE |
| 2895 | * magicp = ARMPEMAGIC; |
| 2896 | #else |
| 2897 | * magicp = ARMMAGIC; |
| 2898 | #endif |
| 2899 | * flagsp = 0; |
| 2900 | if (APCS_SET (abfd)) |
| 2901 | { |
| 2902 | if (APCS_26_FLAG (abfd)) |
| 2903 | * flagsp |= F_APCS26; |
| 2904 | |
| 2905 | if (APCS_FLOAT_FLAG (abfd)) |
| 2906 | * flagsp |= F_APCS_FLOAT; |
| 2907 | |
| 2908 | if (PIC_FLAG (abfd)) |
| 2909 | * flagsp |= F_PIC; |
| 2910 | } |
| 2911 | if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd)) |
| 2912 | * flagsp |= F_INTERWORK; |
| 2913 | switch (bfd_get_mach (abfd)) |
| 2914 | { |
| 2915 | case bfd_mach_arm_2: * flagsp |= F_ARM_2; break; |
| 2916 | case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break; |
| 2917 | case bfd_mach_arm_3: * flagsp |= F_ARM_3; break; |
| 2918 | case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break; |
| 2919 | case bfd_mach_arm_4: * flagsp |= F_ARM_4; break; |
| 2920 | case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break; |
| 2921 | case bfd_mach_arm_5: * flagsp |= F_ARM_5; break; |
| 2922 | /* FIXME: we do not have F_ARM vaues greater than F_ARM_5. |
| 2923 | See also the comment in coff_set_arch_mach_hook(). */ |
| 2924 | case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break; |
| 2925 | case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break; |
| 2926 | case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break; |
| 2927 | } |
| 2928 | return TRUE; |
| 2929 | #endif |
| 2930 | |
| 2931 | #ifdef PPCMAGIC |
| 2932 | case bfd_arch_powerpc: |
| 2933 | *magicp = PPCMAGIC; |
| 2934 | return TRUE; |
| 2935 | #endif |
| 2936 | |
| 2937 | #if defined(I386MAGIC) || defined(AMD64MAGIC) |
| 2938 | case bfd_arch_i386: |
| 2939 | #if defined(I386MAGIC) |
| 2940 | *magicp = I386MAGIC; |
| 2941 | #endif |
| 2942 | #if defined LYNXOS |
| 2943 | /* Just overwrite the usual value if we're doing Lynx. */ |
| 2944 | *magicp = LYNXCOFFMAGIC; |
| 2945 | #endif |
| 2946 | #if defined AMD64MAGIC |
| 2947 | *magicp = AMD64MAGIC; |
| 2948 | #endif |
| 2949 | return TRUE; |
| 2950 | #endif |
| 2951 | |
| 2952 | #ifdef I860MAGIC |
| 2953 | case bfd_arch_i860: |
| 2954 | *magicp = I860MAGIC; |
| 2955 | return TRUE; |
| 2956 | #endif |
| 2957 | |
| 2958 | #ifdef IA64MAGIC |
| 2959 | case bfd_arch_ia64: |
| 2960 | *magicp = IA64MAGIC; |
| 2961 | return TRUE; |
| 2962 | #endif |
| 2963 | |
| 2964 | #ifdef MC68MAGIC |
| 2965 | case bfd_arch_m68k: |
| 2966 | #ifdef APOLLOM68KMAGIC |
| 2967 | *magicp = APOLLO_COFF_VERSION_NUMBER; |
| 2968 | #else |
| 2969 | /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */ |
| 2970 | #ifdef NAMES_HAVE_UNDERSCORE |
| 2971 | *magicp = MC68KBCSMAGIC; |
| 2972 | #else |
| 2973 | *magicp = MC68MAGIC; |
| 2974 | #endif |
| 2975 | #endif |
| 2976 | #ifdef LYNXOS |
| 2977 | /* Just overwrite the usual value if we're doing Lynx. */ |
| 2978 | *magicp = LYNXCOFFMAGIC; |
| 2979 | #endif |
| 2980 | return TRUE; |
| 2981 | #endif |
| 2982 | |
| 2983 | #ifdef MC88MAGIC |
| 2984 | case bfd_arch_m88k: |
| 2985 | *magicp = MC88OMAGIC; |
| 2986 | return TRUE; |
| 2987 | #endif |
| 2988 | |
| 2989 | #ifdef H8300MAGIC |
| 2990 | case bfd_arch_h8300: |
| 2991 | switch (bfd_get_mach (abfd)) |
| 2992 | { |
| 2993 | case bfd_mach_h8300: *magicp = H8300MAGIC; return TRUE; |
| 2994 | case bfd_mach_h8300h: *magicp = H8300HMAGIC; return TRUE; |
| 2995 | case bfd_mach_h8300s: *magicp = H8300SMAGIC; return TRUE; |
| 2996 | case bfd_mach_h8300hn: *magicp = H8300HNMAGIC; return TRUE; |
| 2997 | case bfd_mach_h8300sn: *magicp = H8300SNMAGIC; return TRUE; |
| 2998 | default: break; |
| 2999 | } |
| 3000 | break; |
| 3001 | #endif |
| 3002 | |
| 3003 | #ifdef SH_ARCH_MAGIC_BIG |
| 3004 | case bfd_arch_sh: |
| 3005 | #ifdef COFF_IMAGE_WITH_PE |
| 3006 | *magicp = SH_ARCH_MAGIC_WINCE; |
| 3007 | #else |
| 3008 | if (bfd_big_endian (abfd)) |
| 3009 | *magicp = SH_ARCH_MAGIC_BIG; |
| 3010 | else |
| 3011 | *magicp = SH_ARCH_MAGIC_LITTLE; |
| 3012 | #endif |
| 3013 | return TRUE; |
| 3014 | #endif |
| 3015 | |
| 3016 | #ifdef MIPS_ARCH_MAGIC_WINCE |
| 3017 | case bfd_arch_mips: |
| 3018 | *magicp = MIPS_ARCH_MAGIC_WINCE; |
| 3019 | return TRUE; |
| 3020 | #endif |
| 3021 | |
| 3022 | #ifdef SPARCMAGIC |
| 3023 | case bfd_arch_sparc: |
| 3024 | *magicp = SPARCMAGIC; |
| 3025 | #ifdef LYNXOS |
| 3026 | /* Just overwrite the usual value if we're doing Lynx. */ |
| 3027 | *magicp = LYNXCOFFMAGIC; |
| 3028 | #endif |
| 3029 | return TRUE; |
| 3030 | #endif |
| 3031 | |
| 3032 | #ifdef H8500MAGIC |
| 3033 | case bfd_arch_h8500: |
| 3034 | *magicp = H8500MAGIC; |
| 3035 | return TRUE; |
| 3036 | break; |
| 3037 | #endif |
| 3038 | |
| 3039 | #ifdef WE32KMAGIC |
| 3040 | case bfd_arch_we32k: |
| 3041 | *magicp = WE32KMAGIC; |
| 3042 | return TRUE; |
| 3043 | #endif |
| 3044 | |
| 3045 | #ifdef RS6000COFF_C |
| 3046 | case bfd_arch_rs6000: |
| 3047 | #ifndef PPCMAGIC |
| 3048 | case bfd_arch_powerpc: |
| 3049 | #endif |
| 3050 | BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour); |
| 3051 | *magicp = bfd_xcoff_magic_number (abfd); |
| 3052 | return TRUE; |
| 3053 | #endif |
| 3054 | |
| 3055 | #ifdef MCOREMAGIC |
| 3056 | case bfd_arch_mcore: |
| 3057 | * magicp = MCOREMAGIC; |
| 3058 | return TRUE; |
| 3059 | #endif |
| 3060 | |
| 3061 | #ifdef W65MAGIC |
| 3062 | case bfd_arch_w65: |
| 3063 | *magicp = W65MAGIC; |
| 3064 | return TRUE; |
| 3065 | #endif |
| 3066 | |
| 3067 | #ifdef OR32_MAGIC_BIG |
| 3068 | case bfd_arch_or32: |
| 3069 | if (bfd_big_endian (abfd)) |
| 3070 | * magicp = OR32_MAGIC_BIG; |
| 3071 | else |
| 3072 | * magicp = OR32_MAGIC_LITTLE; |
| 3073 | return TRUE; |
| 3074 | #endif |
| 3075 | |
| 3076 | default: /* Unknown architecture. */ |
| 3077 | /* Fall through to "return FALSE" below, to avoid |
| 3078 | "statement never reached" errors on the one below. */ |
| 3079 | break; |
| 3080 | } |
| 3081 | |
| 3082 | return FALSE; |
| 3083 | } |
| 3084 | |
| 3085 | static bfd_boolean |
| 3086 | coff_set_arch_mach (bfd * abfd, |
| 3087 | enum bfd_architecture arch, |
| 3088 | unsigned long machine) |
| 3089 | { |
| 3090 | unsigned dummy1; |
| 3091 | unsigned short dummy2; |
| 3092 | |
| 3093 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) |
| 3094 | return FALSE; |
| 3095 | |
| 3096 | if (arch != bfd_arch_unknown |
| 3097 | && ! coff_set_flags (abfd, &dummy1, &dummy2)) |
| 3098 | return FALSE; /* We can't represent this type. */ |
| 3099 | |
| 3100 | return TRUE; /* We're easy... */ |
| 3101 | } |
| 3102 | |
| 3103 | #ifdef COFF_IMAGE_WITH_PE |
| 3104 | |
| 3105 | /* This is used to sort sections by VMA, as required by PE image |
| 3106 | files. */ |
| 3107 | |
| 3108 | static int |
| 3109 | sort_by_secaddr (const void * arg1, const void * arg2) |
| 3110 | { |
| 3111 | const asection *a = *(const asection **) arg1; |
| 3112 | const asection *b = *(const asection **) arg2; |
| 3113 | |
| 3114 | if (a->vma < b->vma) |
| 3115 | return -1; |
| 3116 | else if (a->vma > b->vma) |
| 3117 | return 1; |
| 3118 | |
| 3119 | return 0; |
| 3120 | } |
| 3121 | |
| 3122 | #endif /* COFF_IMAGE_WITH_PE */ |
| 3123 | |
| 3124 | /* Calculate the file position for each section. */ |
| 3125 | |
| 3126 | #ifndef I960 |
| 3127 | #define ALIGN_SECTIONS_IN_FILE |
| 3128 | #endif |
| 3129 | #if defined(TIC80COFF) || defined(TICOFF) |
| 3130 | #undef ALIGN_SECTIONS_IN_FILE |
| 3131 | #endif |
| 3132 | |
| 3133 | static bfd_boolean |
| 3134 | coff_compute_section_file_positions (bfd * abfd) |
| 3135 | { |
| 3136 | asection *current; |
| 3137 | file_ptr sofar = bfd_coff_filhsz (abfd); |
| 3138 | bfd_boolean align_adjust; |
| 3139 | int target_index; |
| 3140 | #ifdef ALIGN_SECTIONS_IN_FILE |
| 3141 | asection *previous = NULL; |
| 3142 | file_ptr old_sofar; |
| 3143 | #endif |
| 3144 | |
| 3145 | #ifdef COFF_IMAGE_WITH_PE |
| 3146 | int page_size; |
| 3147 | |
| 3148 | if (coff_data (abfd)->link_info) |
| 3149 | { |
| 3150 | page_size = pe_data (abfd)->pe_opthdr.FileAlignment; |
| 3151 | |
| 3152 | /* If no file alignment has been set, default to one. |
| 3153 | This repairs 'ld -r' for arm-wince-pe target. */ |
| 3154 | if (page_size == 0) |
| 3155 | page_size = 1; |
| 3156 | } |
| 3157 | else |
| 3158 | page_size = PE_DEF_FILE_ALIGNMENT; |
| 3159 | #else |
| 3160 | #ifdef COFF_PAGE_SIZE |
| 3161 | int page_size = COFF_PAGE_SIZE; |
| 3162 | #endif |
| 3163 | #endif |
| 3164 | |
| 3165 | #ifdef RS6000COFF_C |
| 3166 | /* On XCOFF, if we have symbols, set up the .debug section. */ |
| 3167 | if (bfd_get_symcount (abfd) > 0) |
| 3168 | { |
| 3169 | bfd_size_type sz; |
| 3170 | bfd_size_type i, symcount; |
| 3171 | asymbol **symp; |
| 3172 | |
| 3173 | sz = 0; |
| 3174 | symcount = bfd_get_symcount (abfd); |
| 3175 | for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++) |
| 3176 | { |
| 3177 | coff_symbol_type *cf; |
| 3178 | |
| 3179 | cf = coff_symbol_from (abfd, *symp); |
| 3180 | if (cf != NULL |
| 3181 | && cf->native != NULL |
| 3182 | && SYMNAME_IN_DEBUG (&cf->native->u.syment)) |
| 3183 | { |
| 3184 | size_t len; |
| 3185 | |
| 3186 | len = strlen (bfd_asymbol_name (*symp)); |
| 3187 | if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd)) |
| 3188 | sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd); |
| 3189 | } |
| 3190 | } |
| 3191 | if (sz > 0) |
| 3192 | { |
| 3193 | asection *dsec; |
| 3194 | |
| 3195 | dsec = bfd_make_section_old_way (abfd, DOT_DEBUG); |
| 3196 | if (dsec == NULL) |
| 3197 | abort (); |
| 3198 | dsec->size = sz; |
| 3199 | dsec->flags |= SEC_HAS_CONTENTS; |
| 3200 | } |
| 3201 | } |
| 3202 | #endif |
| 3203 | |
| 3204 | if (bfd_get_start_address (abfd)) |
| 3205 | /* A start address may have been added to the original file. In this |
| 3206 | case it will need an optional header to record it. */ |
| 3207 | abfd->flags |= EXEC_P; |
| 3208 | |
| 3209 | if (abfd->flags & EXEC_P) |
| 3210 | sofar += bfd_coff_aoutsz (abfd); |
| 3211 | #ifdef RS6000COFF_C |
| 3212 | else if (xcoff_data (abfd)->full_aouthdr) |
| 3213 | sofar += bfd_coff_aoutsz (abfd); |
| 3214 | else |
| 3215 | sofar += SMALL_AOUTSZ; |
| 3216 | #endif |
| 3217 | |
| 3218 | sofar += abfd->section_count * bfd_coff_scnhsz (abfd); |
| 3219 | |
| 3220 | #ifdef RS6000COFF_C |
| 3221 | /* XCOFF handles overflows in the reloc and line number count fields |
| 3222 | by allocating a new section header to hold the correct counts. */ |
| 3223 | for (current = abfd->sections; current != NULL; current = current->next) |
| 3224 | if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
| 3225 | sofar += bfd_coff_scnhsz (abfd); |
| 3226 | #endif |
| 3227 | |
| 3228 | #ifdef COFF_IMAGE_WITH_PE |
| 3229 | { |
| 3230 | /* PE requires the sections to be in memory order when listed in |
| 3231 | the section headers. It also does not like empty loadable |
| 3232 | sections. The sections apparently do not have to be in the |
| 3233 | right order in the image file itself, but we do need to get the |
| 3234 | target_index values right. */ |
| 3235 | |
| 3236 | unsigned int count; |
| 3237 | asection **section_list; |
| 3238 | unsigned int i; |
| 3239 | bfd_size_type amt; |
| 3240 | |
| 3241 | #ifdef COFF_PAGE_SIZE |
| 3242 | /* Clear D_PAGED if section alignment is smaller than |
| 3243 | COFF_PAGE_SIZE. */ |
| 3244 | if (pe_data (abfd)->pe_opthdr.SectionAlignment < COFF_PAGE_SIZE) |
| 3245 | abfd->flags &= ~D_PAGED; |
| 3246 | #endif |
| 3247 | |
| 3248 | count = 0; |
| 3249 | for (current = abfd->sections; current != NULL; current = current->next) |
| 3250 | ++count; |
| 3251 | |
| 3252 | /* We allocate an extra cell to simplify the final loop. */ |
| 3253 | amt = sizeof (struct asection *) * (count + 1); |
| 3254 | section_list = (asection **) bfd_malloc (amt); |
| 3255 | if (section_list == NULL) |
| 3256 | return FALSE; |
| 3257 | |
| 3258 | i = 0; |
| 3259 | for (current = abfd->sections; current != NULL; current = current->next) |
| 3260 | { |
| 3261 | section_list[i] = current; |
| 3262 | ++i; |
| 3263 | } |
| 3264 | section_list[i] = NULL; |
| 3265 | |
| 3266 | qsort (section_list, count, sizeof (asection *), sort_by_secaddr); |
| 3267 | |
| 3268 | /* Rethread the linked list into sorted order; at the same time, |
| 3269 | assign target_index values. */ |
| 3270 | target_index = 1; |
| 3271 | abfd->sections = NULL; |
| 3272 | abfd->section_last = NULL; |
| 3273 | for (i = 0; i < count; i++) |
| 3274 | { |
| 3275 | current = section_list[i]; |
| 3276 | bfd_section_list_append (abfd, current); |
| 3277 | |
| 3278 | /* Later, if the section has zero size, we'll be throwing it |
| 3279 | away, so we don't want to number it now. Note that having |
| 3280 | a zero size and having real contents are different |
| 3281 | concepts: .bss has no contents, but (usually) non-zero |
| 3282 | size. */ |
| 3283 | if (current->size == 0) |
| 3284 | { |
| 3285 | /* Discard. However, it still might have (valid) symbols |
| 3286 | in it, so arbitrarily set it to section 1 (indexing is |
| 3287 | 1-based here; usually .text). __end__ and other |
| 3288 | contents of .endsection really have this happen. |
| 3289 | FIXME: This seems somewhat dubious. */ |
| 3290 | current->target_index = 1; |
| 3291 | } |
| 3292 | else |
| 3293 | current->target_index = target_index++; |
| 3294 | } |
| 3295 | |
| 3296 | free (section_list); |
| 3297 | } |
| 3298 | #else /* ! COFF_IMAGE_WITH_PE */ |
| 3299 | { |
| 3300 | /* Set the target_index field. */ |
| 3301 | target_index = 1; |
| 3302 | for (current = abfd->sections; current != NULL; current = current->next) |
| 3303 | current->target_index = target_index++; |
| 3304 | } |
| 3305 | #endif /* ! COFF_IMAGE_WITH_PE */ |
| 3306 | |
| 3307 | if (target_index >= 32768) |
| 3308 | { |
| 3309 | bfd_set_error (bfd_error_file_too_big); |
| 3310 | (*_bfd_error_handler) |
| 3311 | (_("%B: too many sections (%d)"), abfd, target_index); |
| 3312 | return FALSE; |
| 3313 | } |
| 3314 | |
| 3315 | align_adjust = FALSE; |
| 3316 | for (current = abfd->sections; |
| 3317 | current != NULL; |
| 3318 | current = current->next) |
| 3319 | { |
| 3320 | #ifdef COFF_IMAGE_WITH_PE |
| 3321 | /* With PE we have to pad each section to be a multiple of its |
| 3322 | page size too, and remember both sizes. */ |
| 3323 | if (coff_section_data (abfd, current) == NULL) |
| 3324 | { |
| 3325 | bfd_size_type amt = sizeof (struct coff_section_tdata); |
| 3326 | |
| 3327 | current->used_by_bfd = bfd_zalloc (abfd, amt); |
| 3328 | if (current->used_by_bfd == NULL) |
| 3329 | return FALSE; |
| 3330 | } |
| 3331 | if (pei_section_data (abfd, current) == NULL) |
| 3332 | { |
| 3333 | bfd_size_type amt = sizeof (struct pei_section_tdata); |
| 3334 | |
| 3335 | coff_section_data (abfd, current)->tdata = bfd_zalloc (abfd, amt); |
| 3336 | if (coff_section_data (abfd, current)->tdata == NULL) |
| 3337 | return FALSE; |
| 3338 | } |
| 3339 | if (pei_section_data (abfd, current)->virt_size == 0) |
| 3340 | pei_section_data (abfd, current)->virt_size = current->size; |
| 3341 | #endif |
| 3342 | |
| 3343 | /* Only deal with sections which have contents. */ |
| 3344 | if (!(current->flags & SEC_HAS_CONTENTS)) |
| 3345 | continue; |
| 3346 | |
| 3347 | current->rawsize = current->size; |
| 3348 | |
| 3349 | #ifdef COFF_IMAGE_WITH_PE |
| 3350 | /* Make sure we skip empty sections in a PE image. */ |
| 3351 | if (current->size == 0) |
| 3352 | continue; |
| 3353 | #endif |
| 3354 | |
| 3355 | /* Align the sections in the file to the same boundary on |
| 3356 | which they are aligned in virtual memory. I960 doesn't |
| 3357 | do this (FIXME) so we can stay in sync with Intel. 960 |
| 3358 | doesn't yet page from files... */ |
| 3359 | #ifdef ALIGN_SECTIONS_IN_FILE |
| 3360 | if ((abfd->flags & EXEC_P) != 0) |
| 3361 | { |
| 3362 | /* Make sure this section is aligned on the right boundary - by |
| 3363 | padding the previous section up if necessary. */ |
| 3364 | old_sofar = sofar; |
| 3365 | |
| 3366 | sofar = BFD_ALIGN (sofar, 1 << current->alignment_power); |
| 3367 | |
| 3368 | #ifdef RS6000COFF_C |
| 3369 | /* Make sure the file offset and the vma of .text/.data are at the |
| 3370 | same page offset, so that the file can be mmap'ed without being |
| 3371 | relocated. Failing that, AIX is able to load and execute the |
| 3372 | program, but it will be silently relocated (possible as |
| 3373 | executables are PIE). But the relocation is slightly costly and |
| 3374 | complexify the use of addr2line or gdb. So better to avoid it, |
| 3375 | like does the native linker. Usually gnu ld makes sure that |
| 3376 | the vma of .text is the file offset so this issue shouldn't |
| 3377 | appear unless you are stripping such an executable. |
| 3378 | |
| 3379 | AIX loader checks the text section alignment of (vma - filepos), |
| 3380 | and the native linker doesn't try to align the text sections. |
| 3381 | For example: |
| 3382 | |
| 3383 | 0 .text 000054cc 10000128 10000128 00000128 2**5 |
| 3384 | CONTENTS, ALLOC, LOAD, CODE |
| 3385 | */ |
| 3386 | |
| 3387 | if (!strcmp (current->name, _TEXT) |
| 3388 | || !strcmp (current->name, _DATA)) |
| 3389 | { |
| 3390 | bfd_vma align = 4096; |
| 3391 | bfd_vma sofar_off = sofar % align; |
| 3392 | bfd_vma vma_off = current->vma % align; |
| 3393 | |
| 3394 | if (vma_off > sofar_off) |
| 3395 | sofar += vma_off - sofar_off; |
| 3396 | else if (vma_off < sofar_off) |
| 3397 | sofar += align + vma_off - sofar_off; |
| 3398 | } |
| 3399 | #endif |
| 3400 | if (previous != NULL) |
| 3401 | previous->size += sofar - old_sofar; |
| 3402 | } |
| 3403 | |
| 3404 | #endif |
| 3405 | |
| 3406 | /* In demand paged files the low order bits of the file offset |
| 3407 | must match the low order bits of the virtual address. */ |
| 3408 | #ifdef COFF_PAGE_SIZE |
| 3409 | if ((abfd->flags & D_PAGED) != 0 |
| 3410 | && (current->flags & SEC_ALLOC) != 0) |
| 3411 | sofar += (current->vma - (bfd_vma) sofar) % page_size; |
| 3412 | #endif |
| 3413 | current->filepos = sofar; |
| 3414 | |
| 3415 | #ifdef COFF_IMAGE_WITH_PE |
| 3416 | /* Set the padded size. */ |
| 3417 | current->size = (current->size + page_size - 1) & -page_size; |
| 3418 | #endif |
| 3419 | |
| 3420 | sofar += current->size; |
| 3421 | |
| 3422 | #ifdef ALIGN_SECTIONS_IN_FILE |
| 3423 | /* Make sure that this section is of the right size too. */ |
| 3424 | if ((abfd->flags & EXEC_P) == 0) |
| 3425 | { |
| 3426 | bfd_size_type old_size; |
| 3427 | |
| 3428 | old_size = current->size; |
| 3429 | current->size = BFD_ALIGN (current->size, |
| 3430 | 1 << current->alignment_power); |
| 3431 | align_adjust = current->size != old_size; |
| 3432 | sofar += current->size - old_size; |
| 3433 | } |
| 3434 | else |
| 3435 | { |
| 3436 | old_sofar = sofar; |
| 3437 | sofar = BFD_ALIGN (sofar, 1 << current->alignment_power); |
| 3438 | align_adjust = sofar != old_sofar; |
| 3439 | current->size += sofar - old_sofar; |
| 3440 | } |
| 3441 | #endif |
| 3442 | |
| 3443 | #ifdef COFF_IMAGE_WITH_PE |
| 3444 | /* For PE we need to make sure we pad out to the aligned |
| 3445 | size, in case the caller only writes out data to the |
| 3446 | unaligned size. */ |
| 3447 | if (pei_section_data (abfd, current)->virt_size < current->size) |
| 3448 | align_adjust = TRUE; |
| 3449 | #endif |
| 3450 | |
| 3451 | #ifdef _LIB |
| 3452 | /* Force .lib sections to start at zero. The vma is then |
| 3453 | incremented in coff_set_section_contents. This is right for |
| 3454 | SVR3.2. */ |
| 3455 | if (strcmp (current->name, _LIB) == 0) |
| 3456 | (void) bfd_set_section_vma (abfd, current, 0); |
| 3457 | #endif |
| 3458 | |
| 3459 | #ifdef ALIGN_SECTIONS_IN_FILE |
| 3460 | previous = current; |
| 3461 | #endif |
| 3462 | } |
| 3463 | |
| 3464 | /* It is now safe to write to the output file. If we needed an |
| 3465 | alignment adjustment for the last section, then make sure that |
| 3466 | there is a byte at offset sofar. If there are no symbols and no |
| 3467 | relocs, then nothing follows the last section. If we don't force |
| 3468 | the last byte out, then the file may appear to be truncated. */ |
| 3469 | if (align_adjust) |
| 3470 | { |
| 3471 | bfd_byte b; |
| 3472 | |
| 3473 | b = 0; |
| 3474 | if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0 |
| 3475 | || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) |
| 3476 | return FALSE; |
| 3477 | } |
| 3478 | |
| 3479 | /* Make sure the relocations are aligned. We don't need to make |
| 3480 | sure that this byte exists, because it will only matter if there |
| 3481 | really are relocs. */ |
| 3482 | sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER); |
| 3483 | |
| 3484 | obj_relocbase (abfd) = sofar; |
| 3485 | abfd->output_has_begun = TRUE; |
| 3486 | |
| 3487 | return TRUE; |
| 3488 | } |
| 3489 | |
| 3490 | #ifdef COFF_IMAGE_WITH_PE |
| 3491 | |
| 3492 | static unsigned int pelength; |
| 3493 | static unsigned int peheader; |
| 3494 | |
| 3495 | static bfd_boolean |
| 3496 | coff_read_word (bfd *abfd, unsigned int *value) |
| 3497 | { |
| 3498 | unsigned char b[2]; |
| 3499 | int status; |
| 3500 | |
| 3501 | status = bfd_bread (b, (bfd_size_type) 2, abfd); |
| 3502 | if (status < 1) |
| 3503 | { |
| 3504 | *value = 0; |
| 3505 | return FALSE; |
| 3506 | } |
| 3507 | |
| 3508 | if (status == 1) |
| 3509 | *value = (unsigned int) b[0]; |
| 3510 | else |
| 3511 | *value = (unsigned int) (b[0] + (b[1] << 8)); |
| 3512 | |
| 3513 | pelength += (unsigned int) status; |
| 3514 | |
| 3515 | return TRUE; |
| 3516 | } |
| 3517 | |
| 3518 | static unsigned int |
| 3519 | coff_compute_checksum (bfd *abfd) |
| 3520 | { |
| 3521 | bfd_boolean more_data; |
| 3522 | file_ptr filepos; |
| 3523 | unsigned int value; |
| 3524 | unsigned int total; |
| 3525 | |
| 3526 | total = 0; |
| 3527 | pelength = 0; |
| 3528 | filepos = (file_ptr) 0; |
| 3529 | |
| 3530 | do |
| 3531 | { |
| 3532 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) |
| 3533 | return 0; |
| 3534 | |
| 3535 | more_data = coff_read_word (abfd, &value); |
| 3536 | total += value; |
| 3537 | total = 0xffff & (total + (total >> 0x10)); |
| 3538 | filepos += 2; |
| 3539 | } |
| 3540 | while (more_data); |
| 3541 | |
| 3542 | return (0xffff & (total + (total >> 0x10))); |
| 3543 | } |
| 3544 | |
| 3545 | static bfd_boolean |
| 3546 | coff_apply_checksum (bfd *abfd) |
| 3547 | { |
| 3548 | unsigned int computed; |
| 3549 | unsigned int checksum = 0; |
| 3550 | |
| 3551 | if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0) |
| 3552 | return FALSE; |
| 3553 | |
| 3554 | if (!coff_read_word (abfd, &peheader)) |
| 3555 | return FALSE; |
| 3556 | |
| 3557 | if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0) |
| 3558 | return FALSE; |
| 3559 | |
| 3560 | checksum = 0; |
| 3561 | bfd_bwrite (&checksum, (bfd_size_type) 4, abfd); |
| 3562 | |
| 3563 | if (bfd_seek (abfd, peheader, SEEK_SET) != 0) |
| 3564 | return FALSE; |
| 3565 | |
| 3566 | computed = coff_compute_checksum (abfd); |
| 3567 | |
| 3568 | checksum = computed + pelength; |
| 3569 | |
| 3570 | if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0) |
| 3571 | return FALSE; |
| 3572 | |
| 3573 | bfd_bwrite (&checksum, (bfd_size_type) 4, abfd); |
| 3574 | |
| 3575 | return TRUE; |
| 3576 | } |
| 3577 | |
| 3578 | #endif /* COFF_IMAGE_WITH_PE */ |
| 3579 | |
| 3580 | static bfd_boolean |
| 3581 | coff_write_object_contents (bfd * abfd) |
| 3582 | { |
| 3583 | asection *current; |
| 3584 | bfd_boolean hasrelocs = FALSE; |
| 3585 | bfd_boolean haslinno = FALSE; |
| 3586 | #ifdef COFF_IMAGE_WITH_PE |
| 3587 | bfd_boolean hasdebug = FALSE; |
| 3588 | #endif |
| 3589 | file_ptr scn_base; |
| 3590 | file_ptr reloc_base; |
| 3591 | file_ptr lineno_base; |
| 3592 | file_ptr sym_base; |
| 3593 | unsigned long reloc_size = 0, reloc_count = 0; |
| 3594 | unsigned long lnno_size = 0; |
| 3595 | bfd_boolean long_section_names; |
| 3596 | asection *text_sec = NULL; |
| 3597 | asection *data_sec = NULL; |
| 3598 | asection *bss_sec = NULL; |
| 3599 | struct internal_filehdr internal_f; |
| 3600 | struct internal_aouthdr internal_a; |
| 3601 | #ifdef COFF_LONG_SECTION_NAMES |
| 3602 | size_t string_size = STRING_SIZE_SIZE; |
| 3603 | #endif |
| 3604 | |
| 3605 | bfd_set_error (bfd_error_system_call); |
| 3606 | |
| 3607 | /* Make a pass through the symbol table to count line number entries and |
| 3608 | put them into the correct asections. */ |
| 3609 | lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd); |
| 3610 | |
| 3611 | if (! abfd->output_has_begun) |
| 3612 | { |
| 3613 | if (! coff_compute_section_file_positions (abfd)) |
| 3614 | return FALSE; |
| 3615 | } |
| 3616 | |
| 3617 | reloc_base = obj_relocbase (abfd); |
| 3618 | |
| 3619 | /* Work out the size of the reloc and linno areas. */ |
| 3620 | |
| 3621 | for (current = abfd->sections; current != NULL; current = |
| 3622 | current->next) |
| 3623 | { |
| 3624 | #ifdef COFF_WITH_PE |
| 3625 | /* We store the actual reloc count in the first reloc's addr. */ |
| 3626 | if (obj_pe (abfd) && current->reloc_count >= 0xffff) |
| 3627 | reloc_count ++; |
| 3628 | #endif |
| 3629 | reloc_count += current->reloc_count; |
| 3630 | } |
| 3631 | |
| 3632 | reloc_size = reloc_count * bfd_coff_relsz (abfd); |
| 3633 | |
| 3634 | lineno_base = reloc_base + reloc_size; |
| 3635 | sym_base = lineno_base + lnno_size; |
| 3636 | |
| 3637 | /* Indicate in each section->line_filepos its actual file address. */ |
| 3638 | for (current = abfd->sections; current != NULL; current = |
| 3639 | current->next) |
| 3640 | { |
| 3641 | if (current->lineno_count) |
| 3642 | { |
| 3643 | current->line_filepos = lineno_base; |
| 3644 | current->moving_line_filepos = lineno_base; |
| 3645 | lineno_base += current->lineno_count * bfd_coff_linesz (abfd); |
| 3646 | } |
| 3647 | else |
| 3648 | current->line_filepos = 0; |
| 3649 | |
| 3650 | if (current->reloc_count) |
| 3651 | { |
| 3652 | current->rel_filepos = reloc_base; |
| 3653 | reloc_base += current->reloc_count * bfd_coff_relsz (abfd); |
| 3654 | #ifdef COFF_WITH_PE |
| 3655 | /* Extra reloc to hold real count. */ |
| 3656 | if (obj_pe (abfd) && current->reloc_count >= 0xffff) |
| 3657 | reloc_base += bfd_coff_relsz (abfd); |
| 3658 | #endif |
| 3659 | } |
| 3660 | else |
| 3661 | current->rel_filepos = 0; |
| 3662 | } |
| 3663 | |
| 3664 | /* Write section headers to the file. */ |
| 3665 | internal_f.f_nscns = 0; |
| 3666 | |
| 3667 | if ((abfd->flags & EXEC_P) != 0) |
| 3668 | scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
| 3669 | else |
| 3670 | { |
| 3671 | scn_base = bfd_coff_filhsz (abfd); |
| 3672 | #ifdef RS6000COFF_C |
| 3673 | #ifndef XCOFF64 |
| 3674 | if (xcoff_data (abfd)->full_aouthdr) |
| 3675 | scn_base += bfd_coff_aoutsz (abfd); |
| 3676 | else |
| 3677 | scn_base += SMALL_AOUTSZ; |
| 3678 | #endif |
| 3679 | #endif |
| 3680 | } |
| 3681 | |
| 3682 | if (bfd_seek (abfd, scn_base, SEEK_SET) != 0) |
| 3683 | return FALSE; |
| 3684 | |
| 3685 | long_section_names = FALSE; |
| 3686 | for (current = abfd->sections; |
| 3687 | current != NULL; |
| 3688 | current = current->next) |
| 3689 | { |
| 3690 | struct internal_scnhdr section; |
| 3691 | #ifdef COFF_IMAGE_WITH_PE |
| 3692 | bfd_boolean is_reloc_section = FALSE; |
| 3693 | |
| 3694 | if (strcmp (current->name, DOT_RELOC) == 0) |
| 3695 | { |
| 3696 | is_reloc_section = TRUE; |
| 3697 | hasrelocs = TRUE; |
| 3698 | pe_data (abfd)->has_reloc_section = 1; |
| 3699 | } |
| 3700 | #endif |
| 3701 | |
| 3702 | internal_f.f_nscns++; |
| 3703 | |
| 3704 | strncpy (section.s_name, current->name, SCNNMLEN); |
| 3705 | |
| 3706 | #ifdef COFF_LONG_SECTION_NAMES |
| 3707 | /* Handle long section names as in PE. This must be compatible |
| 3708 | with the code in coff_write_symbols and _bfd_coff_final_link. */ |
| 3709 | if (bfd_coff_long_section_names (abfd)) |
| 3710 | { |
| 3711 | size_t len; |
| 3712 | |
| 3713 | len = strlen (current->name); |
| 3714 | if (len > SCNNMLEN) |
| 3715 | { |
| 3716 | /* The s_name field is defined to be NUL-padded but need not be |
| 3717 | NUL-terminated. We use a temporary buffer so that we can still |
| 3718 | sprintf all eight chars without splatting a terminating NUL |
| 3719 | over the first byte of the following member (s_paddr). */ |
| 3720 | char s_name_buf[SCNNMLEN + 1]; |
| 3721 | |
| 3722 | /* An inherent limitation of the /nnnnnnn notation used to indicate |
| 3723 | the offset of the long name in the string table is that we |
| 3724 | cannot address entries beyone the ten million byte boundary. */ |
| 3725 | if (string_size >= 10000000) |
| 3726 | { |
| 3727 | bfd_set_error (bfd_error_file_too_big); |
| 3728 | (*_bfd_error_handler) |
| 3729 | (_("%B: section %s: string table overflow at offset %ld"), |
| 3730 | abfd, current->name, string_size); |
| 3731 | return FALSE; |
| 3732 | } |
| 3733 | |
| 3734 | /* snprintf not strictly necessary now we've verified the value |
| 3735 | has less than eight ASCII digits, but never mind. */ |
| 3736 | snprintf (s_name_buf, SCNNMLEN + 1, "/%lu", (unsigned long) string_size); |
| 3737 | /* Then strncpy takes care of any padding for us. */ |
| 3738 | strncpy (section.s_name, s_name_buf, SCNNMLEN); |
| 3739 | string_size += len + 1; |
| 3740 | long_section_names = TRUE; |
| 3741 | } |
| 3742 | } |
| 3743 | #endif |
| 3744 | |
| 3745 | #ifdef _LIB |
| 3746 | /* Always set s_vaddr of .lib to 0. This is right for SVR3.2 |
| 3747 | Ian Taylor <ian@cygnus.com>. */ |
| 3748 | if (strcmp (current->name, _LIB) == 0) |
| 3749 | section.s_vaddr = 0; |
| 3750 | else |
| 3751 | #endif |
| 3752 | section.s_vaddr = current->vma; |
| 3753 | section.s_paddr = current->lma; |
| 3754 | section.s_size = current->size; |
| 3755 | #ifdef coff_get_section_load_page |
| 3756 | section.s_page = coff_get_section_load_page (current); |
| 3757 | #else |
| 3758 | section.s_page = 0; |
| 3759 | #endif |
| 3760 | |
| 3761 | #ifdef COFF_WITH_PE |
| 3762 | section.s_paddr = 0; |
| 3763 | #endif |
| 3764 | #ifdef COFF_IMAGE_WITH_PE |
| 3765 | /* Reminder: s_paddr holds the virtual size of the section. */ |
| 3766 | if (coff_section_data (abfd, current) != NULL |
| 3767 | && pei_section_data (abfd, current) != NULL) |
| 3768 | section.s_paddr = pei_section_data (abfd, current)->virt_size; |
| 3769 | else |
| 3770 | section.s_paddr = 0; |
| 3771 | #endif |
| 3772 | |
| 3773 | /* If this section has no size or is unloadable then the scnptr |
| 3774 | will be 0 too. */ |
| 3775 | if (current->size == 0 |
| 3776 | || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
| 3777 | section.s_scnptr = 0; |
| 3778 | else |
| 3779 | section.s_scnptr = current->filepos; |
| 3780 | |
| 3781 | section.s_relptr = current->rel_filepos; |
| 3782 | section.s_lnnoptr = current->line_filepos; |
| 3783 | section.s_nreloc = current->reloc_count; |
| 3784 | section.s_nlnno = current->lineno_count; |
| 3785 | #ifndef COFF_IMAGE_WITH_PE |
| 3786 | /* In PEI, relocs come in the .reloc section. */ |
| 3787 | if (current->reloc_count != 0) |
| 3788 | hasrelocs = TRUE; |
| 3789 | #endif |
| 3790 | if (current->lineno_count != 0) |
| 3791 | haslinno = TRUE; |
| 3792 | #ifdef COFF_IMAGE_WITH_PE |
| 3793 | if ((current->flags & SEC_DEBUGGING) != 0 |
| 3794 | && ! is_reloc_section) |
| 3795 | hasdebug = TRUE; |
| 3796 | #endif |
| 3797 | |
| 3798 | #ifdef RS6000COFF_C |
| 3799 | #ifndef XCOFF64 |
| 3800 | /* Indicate the use of an XCOFF overflow section header. */ |
| 3801 | if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
| 3802 | { |
| 3803 | section.s_nreloc = 0xffff; |
| 3804 | section.s_nlnno = 0xffff; |
| 3805 | } |
| 3806 | #endif |
| 3807 | #endif |
| 3808 | |
| 3809 | section.s_flags = sec_to_styp_flags (current->name, current->flags); |
| 3810 | |
| 3811 | if (!strcmp (current->name, _TEXT)) |
| 3812 | text_sec = current; |
| 3813 | else if (!strcmp (current->name, _DATA)) |
| 3814 | data_sec = current; |
| 3815 | else if (!strcmp (current->name, _BSS)) |
| 3816 | bss_sec = current; |
| 3817 | |
| 3818 | #ifdef I960 |
| 3819 | section.s_align = (current->alignment_power |
| 3820 | ? 1 << current->alignment_power |
| 3821 | : 0); |
| 3822 | #endif |
| 3823 | #ifdef TIC80COFF |
| 3824 | /* TI COFF puts the alignment power in bits 8-11 of the flags. */ |
| 3825 | section.s_flags |= (current->alignment_power & 0xF) << 8; |
| 3826 | #endif |
| 3827 | #ifdef COFF_ENCODE_ALIGNMENT |
| 3828 | COFF_ENCODE_ALIGNMENT(section, current->alignment_power); |
| 3829 | #endif |
| 3830 | |
| 3831 | #ifdef COFF_IMAGE_WITH_PE |
| 3832 | /* Suppress output of the sections if they are null. ld |
| 3833 | includes the bss and data sections even if there is no size |
| 3834 | assigned to them. NT loader doesn't like it if these section |
| 3835 | headers are included if the sections themselves are not |
| 3836 | needed. See also coff_compute_section_file_positions. */ |
| 3837 | if (section.s_size == 0) |
| 3838 | internal_f.f_nscns--; |
| 3839 | else |
| 3840 | #endif |
| 3841 | { |
| 3842 | SCNHDR buff; |
| 3843 | bfd_size_type amt = bfd_coff_scnhsz (abfd); |
| 3844 | |
| 3845 | if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0 |
| 3846 | || bfd_bwrite (& buff, amt, abfd) != amt) |
| 3847 | return FALSE; |
| 3848 | } |
| 3849 | |
| 3850 | #ifdef COFF_WITH_PE |
| 3851 | /* PE stores COMDAT section information in the symbol table. If |
| 3852 | this section is supposed to have some COMDAT info, track down |
| 3853 | the symbol in the symbol table and modify it. */ |
| 3854 | if ((current->flags & SEC_LINK_ONCE) != 0) |
| 3855 | { |
| 3856 | unsigned int i, count; |
| 3857 | asymbol **psym; |
| 3858 | coff_symbol_type *csym = NULL; |
| 3859 | asymbol **psymsec; |
| 3860 | |
| 3861 | psymsec = NULL; |
| 3862 | count = bfd_get_symcount (abfd); |
| 3863 | for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++) |
| 3864 | { |
| 3865 | if ((*psym)->section != current) |
| 3866 | continue; |
| 3867 | |
| 3868 | /* Remember the location of the first symbol in this |
| 3869 | section. */ |
| 3870 | if (psymsec == NULL) |
| 3871 | psymsec = psym; |
| 3872 | |
| 3873 | /* See if this is the section symbol. */ |
| 3874 | if (strcmp ((*psym)->name, current->name) == 0) |
| 3875 | { |
| 3876 | csym = coff_symbol_from (abfd, *psym); |
| 3877 | if (csym == NULL |
| 3878 | || csym->native == NULL |
| 3879 | || csym->native->u.syment.n_numaux < 1 |
| 3880 | || csym->native->u.syment.n_sclass != C_STAT |
| 3881 | || csym->native->u.syment.n_type != T_NULL) |
| 3882 | continue; |
| 3883 | |
| 3884 | /* Here *PSYM is the section symbol for CURRENT. */ |
| 3885 | |
| 3886 | break; |
| 3887 | } |
| 3888 | } |
| 3889 | |
| 3890 | /* Did we find it? |
| 3891 | Note that we might not if we're converting the file from |
| 3892 | some other object file format. */ |
| 3893 | if (i < count) |
| 3894 | { |
| 3895 | combined_entry_type *aux; |
| 3896 | |
| 3897 | /* We don't touch the x_checksum field. The |
| 3898 | x_associated field is not currently supported. */ |
| 3899 | |
| 3900 | aux = csym->native + 1; |
| 3901 | switch (current->flags & SEC_LINK_DUPLICATES) |
| 3902 | { |
| 3903 | case SEC_LINK_DUPLICATES_DISCARD: |
| 3904 | aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY; |
| 3905 | break; |
| 3906 | |
| 3907 | case SEC_LINK_DUPLICATES_ONE_ONLY: |
| 3908 | aux->u.auxent.x_scn.x_comdat = |
| 3909 | IMAGE_COMDAT_SELECT_NODUPLICATES; |
| 3910 | break; |
| 3911 | |
| 3912 | case SEC_LINK_DUPLICATES_SAME_SIZE: |
| 3913 | aux->u.auxent.x_scn.x_comdat = |
| 3914 | IMAGE_COMDAT_SELECT_SAME_SIZE; |
| 3915 | break; |
| 3916 | |
| 3917 | case SEC_LINK_DUPLICATES_SAME_CONTENTS: |
| 3918 | aux->u.auxent.x_scn.x_comdat = |
| 3919 | IMAGE_COMDAT_SELECT_EXACT_MATCH; |
| 3920 | break; |
| 3921 | } |
| 3922 | |
| 3923 | /* The COMDAT symbol must be the first symbol from this |
| 3924 | section in the symbol table. In order to make this |
| 3925 | work, we move the COMDAT symbol before the first |
| 3926 | symbol we found in the search above. It's OK to |
| 3927 | rearrange the symbol table at this point, because |
| 3928 | coff_renumber_symbols is going to rearrange it |
| 3929 | further and fix up all the aux entries. */ |
| 3930 | if (psym != psymsec) |
| 3931 | { |
| 3932 | asymbol *hold; |
| 3933 | asymbol **pcopy; |
| 3934 | |
| 3935 | hold = *psym; |
| 3936 | for (pcopy = psym; pcopy > psymsec; pcopy--) |
| 3937 | pcopy[0] = pcopy[-1]; |
| 3938 | *psymsec = hold; |
| 3939 | } |
| 3940 | } |
| 3941 | } |
| 3942 | #endif /* COFF_WITH_PE */ |
| 3943 | } |
| 3944 | |
| 3945 | #ifdef RS6000COFF_C |
| 3946 | #ifndef XCOFF64 |
| 3947 | /* XCOFF handles overflows in the reloc and line number count fields |
| 3948 | by creating a new section header to hold the correct values. */ |
| 3949 | for (current = abfd->sections; current != NULL; current = current->next) |
| 3950 | { |
| 3951 | if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
| 3952 | { |
| 3953 | struct internal_scnhdr scnhdr; |
| 3954 | SCNHDR buff; |
| 3955 | bfd_size_type amt; |
| 3956 | |
| 3957 | internal_f.f_nscns++; |
| 3958 | memcpy (scnhdr.s_name, ".ovrflo", 8); |
| 3959 | scnhdr.s_paddr = current->reloc_count; |
| 3960 | scnhdr.s_vaddr = current->lineno_count; |
| 3961 | scnhdr.s_size = 0; |
| 3962 | scnhdr.s_scnptr = 0; |
| 3963 | scnhdr.s_relptr = current->rel_filepos; |
| 3964 | scnhdr.s_lnnoptr = current->line_filepos; |
| 3965 | scnhdr.s_nreloc = current->target_index; |
| 3966 | scnhdr.s_nlnno = current->target_index; |
| 3967 | scnhdr.s_flags = STYP_OVRFLO; |
| 3968 | amt = bfd_coff_scnhsz (abfd); |
| 3969 | if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0 |
| 3970 | || bfd_bwrite (& buff, amt, abfd) != amt) |
| 3971 | return FALSE; |
| 3972 | } |
| 3973 | } |
| 3974 | #endif |
| 3975 | #endif |
| 3976 | |
| 3977 | /* OK, now set up the filehdr... */ |
| 3978 | |
| 3979 | /* Don't include the internal abs section in the section count */ |
| 3980 | |
| 3981 | /* We will NOT put a fucking timestamp in the header here. Every time you |
| 3982 | put it back, I will come in and take it out again. I'm sorry. This |
| 3983 | field does not belong here. We fill it with a 0 so it compares the |
| 3984 | same but is not a reasonable time. -- gnu@cygnus.com */ |
| 3985 | internal_f.f_timdat = 0; |
| 3986 | internal_f.f_flags = 0; |
| 3987 | |
| 3988 | if (abfd->flags & EXEC_P) |
| 3989 | internal_f.f_opthdr = bfd_coff_aoutsz (abfd); |
| 3990 | else |
| 3991 | { |
| 3992 | internal_f.f_opthdr = 0; |
| 3993 | #ifdef RS6000COFF_C |
| 3994 | #ifndef XCOFF64 |
| 3995 | if (xcoff_data (abfd)->full_aouthdr) |
| 3996 | internal_f.f_opthdr = bfd_coff_aoutsz (abfd); |
| 3997 | else |
| 3998 | internal_f.f_opthdr = SMALL_AOUTSZ; |
| 3999 | #endif |
| 4000 | #endif |
| 4001 | } |
| 4002 | |
| 4003 | if (!hasrelocs) |
| 4004 | internal_f.f_flags |= F_RELFLG; |
| 4005 | if (!haslinno) |
| 4006 | internal_f.f_flags |= F_LNNO; |
| 4007 | if (abfd->flags & EXEC_P) |
| 4008 | internal_f.f_flags |= F_EXEC; |
| 4009 | #ifdef COFF_IMAGE_WITH_PE |
| 4010 | if (! hasdebug) |
| 4011 | internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED; |
| 4012 | if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE) |
| 4013 | internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE; |
| 4014 | #endif |
| 4015 | |
| 4016 | #ifndef COFF_WITH_pex64 |
| 4017 | #ifdef COFF_WITH_PE |
| 4018 | internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE; |
| 4019 | #else |
| 4020 | if (bfd_little_endian (abfd)) |
| 4021 | internal_f.f_flags |= F_AR32WR; |
| 4022 | else |
| 4023 | internal_f.f_flags |= F_AR32W; |
| 4024 | #endif |
| 4025 | #endif |
| 4026 | |
| 4027 | #ifdef TI_TARGET_ID |
| 4028 | /* Target id is used in TI COFF v1 and later; COFF0 won't use this field, |
| 4029 | but it doesn't hurt to set it internally. */ |
| 4030 | internal_f.f_target_id = TI_TARGET_ID; |
| 4031 | #endif |
| 4032 | #ifdef TIC80_TARGET_ID |
| 4033 | internal_f.f_target_id = TIC80_TARGET_ID; |
| 4034 | #endif |
| 4035 | |
| 4036 | /* FIXME, should do something about the other byte orders and |
| 4037 | architectures. */ |
| 4038 | |
| 4039 | #ifdef RS6000COFF_C |
| 4040 | if ((abfd->flags & DYNAMIC) != 0) |
| 4041 | internal_f.f_flags |= F_SHROBJ; |
| 4042 | if (bfd_get_section_by_name (abfd, _LOADER) != NULL) |
| 4043 | internal_f.f_flags |= F_DYNLOAD; |
| 4044 | #endif |
| 4045 | |
| 4046 | memset (&internal_a, 0, sizeof internal_a); |
| 4047 | |
| 4048 | /* Set up architecture-dependent stuff. */ |
| 4049 | { |
| 4050 | unsigned int magic = 0; |
| 4051 | unsigned short flags = 0; |
| 4052 | |
| 4053 | coff_set_flags (abfd, &magic, &flags); |
| 4054 | internal_f.f_magic = magic; |
| 4055 | internal_f.f_flags |= flags; |
| 4056 | /* ...and the "opt"hdr... */ |
| 4057 | |
| 4058 | #ifdef TICOFF_AOUT_MAGIC |
| 4059 | internal_a.magic = TICOFF_AOUT_MAGIC; |
| 4060 | #define __A_MAGIC_SET__ |
| 4061 | #endif |
| 4062 | #ifdef TIC80COFF |
| 4063 | internal_a.magic = TIC80_ARCH_MAGIC; |
| 4064 | #define __A_MAGIC_SET__ |
| 4065 | #endif /* TIC80 */ |
| 4066 | #ifdef I860 |
| 4067 | /* FIXME: What are the a.out magic numbers for the i860? */ |
| 4068 | internal_a.magic = 0; |
| 4069 | #define __A_MAGIC_SET__ |
| 4070 | #endif /* I860 */ |
| 4071 | #ifdef I960 |
| 4072 | internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC); |
| 4073 | #define __A_MAGIC_SET__ |
| 4074 | #endif /* I960 */ |
| 4075 | #if M88 |
| 4076 | #define __A_MAGIC_SET__ |
| 4077 | internal_a.magic = PAGEMAGICBCS; |
| 4078 | #endif /* M88 */ |
| 4079 | |
| 4080 | #if APOLLO_M68 |
| 4081 | #define __A_MAGIC_SET__ |
| 4082 | internal_a.magic = APOLLO_COFF_VERSION_NUMBER; |
| 4083 | #endif |
| 4084 | |
| 4085 | #if defined(M68) || defined(WE32K) || defined(M68K) |
| 4086 | #define __A_MAGIC_SET__ |
| 4087 | #if defined(LYNXOS) |
| 4088 | internal_a.magic = LYNXCOFFMAGIC; |
| 4089 | #else |
| 4090 | #if defined(TARG_AUX) |
| 4091 | internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED : |
| 4092 | abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED : |
| 4093 | PAGEMAGICEXECSWAPPED); |
| 4094 | #else |
| 4095 | #if defined (PAGEMAGICPEXECPAGED) |
| 4096 | internal_a.magic = PAGEMAGICPEXECPAGED; |
| 4097 | #endif |
| 4098 | #endif /* TARG_AUX */ |
| 4099 | #endif /* LYNXOS */ |
| 4100 | #endif /* M68 || WE32K || M68K */ |
| 4101 | |
| 4102 | #if defined(ARM) |
| 4103 | #define __A_MAGIC_SET__ |
| 4104 | internal_a.magic = ZMAGIC; |
| 4105 | #endif |
| 4106 | |
| 4107 | #if defined(PPC_PE) |
| 4108 | #define __A_MAGIC_SET__ |
| 4109 | internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC; |
| 4110 | #endif |
| 4111 | |
| 4112 | #if defined MCORE_PE |
| 4113 | #define __A_MAGIC_SET__ |
| 4114 | internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC; |
| 4115 | #endif |
| 4116 | |
| 4117 | #if defined(I386) |
| 4118 | #define __A_MAGIC_SET__ |
| 4119 | #if defined LYNXOS |
| 4120 | internal_a.magic = LYNXCOFFMAGIC; |
| 4121 | #elif defined AMD64 |
| 4122 | internal_a.magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC; |
| 4123 | #else |
| 4124 | internal_a.magic = ZMAGIC; |
| 4125 | #endif |
| 4126 | #endif /* I386 */ |
| 4127 | |
| 4128 | #if defined(IA64) |
| 4129 | #define __A_MAGIC_SET__ |
| 4130 | internal_a.magic = PE32PMAGIC; |
| 4131 | #endif /* IA64 */ |
| 4132 | |
| 4133 | #if defined(SPARC) |
| 4134 | #define __A_MAGIC_SET__ |
| 4135 | #if defined(LYNXOS) |
| 4136 | internal_a.magic = LYNXCOFFMAGIC; |
| 4137 | #endif /* LYNXOS */ |
| 4138 | #endif /* SPARC */ |
| 4139 | |
| 4140 | #ifdef RS6000COFF_C |
| 4141 | #define __A_MAGIC_SET__ |
| 4142 | internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC : |
| 4143 | (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC : |
| 4144 | RS6K_AOUTHDR_OMAGIC; |
| 4145 | #endif |
| 4146 | |
| 4147 | #if defined(SH) && defined(COFF_WITH_PE) |
| 4148 | #define __A_MAGIC_SET__ |
| 4149 | internal_a.magic = SH_PE_MAGIC; |
| 4150 | #endif |
| 4151 | |
| 4152 | #if defined(MIPS) && defined(COFF_WITH_PE) |
| 4153 | #define __A_MAGIC_SET__ |
| 4154 | internal_a.magic = MIPS_PE_MAGIC; |
| 4155 | #endif |
| 4156 | |
| 4157 | #ifdef OR32 |
| 4158 | #define __A_MAGIC_SET__ |
| 4159 | internal_a.magic = NMAGIC; /* Assume separate i/d. */ |
| 4160 | #endif |
| 4161 | |
| 4162 | #ifndef __A_MAGIC_SET__ |
| 4163 | #include "Your aouthdr magic number is not being set!" |
| 4164 | #else |
| 4165 | #undef __A_MAGIC_SET__ |
| 4166 | #endif |
| 4167 | } |
| 4168 | |
| 4169 | /* FIXME: Does anybody ever set this to another value? */ |
| 4170 | internal_a.vstamp = 0; |
| 4171 | |
| 4172 | /* Now should write relocs, strings, syms. */ |
| 4173 | obj_sym_filepos (abfd) = sym_base; |
| 4174 | |
| 4175 | if (bfd_get_symcount (abfd) != 0) |
| 4176 | { |
| 4177 | int firstundef; |
| 4178 | |
| 4179 | if (!coff_renumber_symbols (abfd, &firstundef)) |
| 4180 | return FALSE; |
| 4181 | coff_mangle_symbols (abfd); |
| 4182 | if (! coff_write_symbols (abfd)) |
| 4183 | return FALSE; |
| 4184 | if (! coff_write_linenumbers (abfd)) |
| 4185 | return FALSE; |
| 4186 | if (! coff_write_relocs (abfd, firstundef)) |
| 4187 | return FALSE; |
| 4188 | } |
| 4189 | #ifdef COFF_LONG_SECTION_NAMES |
| 4190 | else if (long_section_names && ! obj_coff_strings_written (abfd)) |
| 4191 | { |
| 4192 | /* If we have long section names we have to write out the string |
| 4193 | table even if there are no symbols. */ |
| 4194 | if (! coff_write_symbols (abfd)) |
| 4195 | return FALSE; |
| 4196 | } |
| 4197 | #endif |
| 4198 | #ifdef COFF_IMAGE_WITH_PE |
| 4199 | #ifdef PPC_PE |
| 4200 | else if ((abfd->flags & EXEC_P) != 0) |
| 4201 | { |
| 4202 | bfd_byte b; |
| 4203 | |
| 4204 | /* PowerPC PE appears to require that all executable files be |
| 4205 | rounded up to the page size. */ |
| 4206 | b = 0; |
| 4207 | if (bfd_seek (abfd, |
| 4208 | (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1, |
| 4209 | SEEK_SET) != 0 |
| 4210 | || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) |
| 4211 | return FALSE; |
| 4212 | } |
| 4213 | #endif |
| 4214 | #endif |
| 4215 | |
| 4216 | /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF |
| 4217 | backend linker, and obj_raw_syment_count is not valid until after |
| 4218 | coff_write_symbols is called. */ |
| 4219 | if (obj_raw_syment_count (abfd) != 0) |
| 4220 | { |
| 4221 | internal_f.f_symptr = sym_base; |
| 4222 | #ifdef RS6000COFF_C |
| 4223 | /* AIX appears to require that F_RELFLG not be set if there are |
| 4224 | local symbols but no relocations. */ |
| 4225 | internal_f.f_flags &=~ F_RELFLG; |
| 4226 | #endif |
| 4227 | } |
| 4228 | else |
| 4229 | { |
| 4230 | if (long_section_names) |
| 4231 | internal_f.f_symptr = sym_base; |
| 4232 | else |
| 4233 | internal_f.f_symptr = 0; |
| 4234 | internal_f.f_flags |= F_LSYMS; |
| 4235 | } |
| 4236 | |
| 4237 | if (text_sec) |
| 4238 | { |
| 4239 | internal_a.tsize = text_sec->size; |
| 4240 | internal_a.text_start = internal_a.tsize ? text_sec->vma : 0; |
| 4241 | } |
| 4242 | if (data_sec) |
| 4243 | { |
| 4244 | internal_a.dsize = data_sec->size; |
| 4245 | internal_a.data_start = internal_a.dsize ? data_sec->vma : 0; |
| 4246 | } |
| 4247 | if (bss_sec) |
| 4248 | { |
| 4249 | internal_a.bsize = bss_sec->size; |
| 4250 | if (internal_a.bsize && bss_sec->vma < internal_a.data_start) |
| 4251 | internal_a.data_start = bss_sec->vma; |
| 4252 | } |
| 4253 | |
| 4254 | internal_a.entry = bfd_get_start_address (abfd); |
| 4255 | internal_f.f_nsyms = obj_raw_syment_count (abfd); |
| 4256 | |
| 4257 | #ifdef RS6000COFF_C |
| 4258 | if (xcoff_data (abfd)->full_aouthdr) |
| 4259 | { |
| 4260 | bfd_vma toc; |
| 4261 | asection *loader_sec; |
| 4262 | |
| 4263 | internal_a.vstamp = 1; |
| 4264 | |
| 4265 | internal_a.o_snentry = xcoff_data (abfd)->snentry; |
| 4266 | if (internal_a.o_snentry == 0) |
| 4267 | internal_a.entry = (bfd_vma) -1; |
| 4268 | |
| 4269 | if (text_sec != NULL) |
| 4270 | { |
| 4271 | internal_a.o_sntext = text_sec->target_index; |
| 4272 | internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec); |
| 4273 | } |
| 4274 | else |
| 4275 | { |
| 4276 | internal_a.o_sntext = 0; |
| 4277 | internal_a.o_algntext = 0; |
| 4278 | } |
| 4279 | if (data_sec != NULL) |
| 4280 | { |
| 4281 | internal_a.o_sndata = data_sec->target_index; |
| 4282 | internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec); |
| 4283 | } |
| 4284 | else |
| 4285 | { |
| 4286 | internal_a.o_sndata = 0; |
| 4287 | internal_a.o_algndata = 0; |
| 4288 | } |
| 4289 | loader_sec = bfd_get_section_by_name (abfd, ".loader"); |
| 4290 | if (loader_sec != NULL) |
| 4291 | internal_a.o_snloader = loader_sec->target_index; |
| 4292 | else |
| 4293 | internal_a.o_snloader = 0; |
| 4294 | if (bss_sec != NULL) |
| 4295 | internal_a.o_snbss = bss_sec->target_index; |
| 4296 | else |
| 4297 | internal_a.o_snbss = 0; |
| 4298 | |
| 4299 | toc = xcoff_data (abfd)->toc; |
| 4300 | internal_a.o_toc = toc; |
| 4301 | internal_a.o_sntoc = xcoff_data (abfd)->sntoc; |
| 4302 | |
| 4303 | internal_a.o_modtype = xcoff_data (abfd)->modtype; |
| 4304 | if (xcoff_data (abfd)->cputype != -1) |
| 4305 | internal_a.o_cputype = xcoff_data (abfd)->cputype; |
| 4306 | else |
| 4307 | { |
| 4308 | switch (bfd_get_arch (abfd)) |
| 4309 | { |
| 4310 | case bfd_arch_rs6000: |
| 4311 | internal_a.o_cputype = 4; |
| 4312 | break; |
| 4313 | case bfd_arch_powerpc: |
| 4314 | if (bfd_get_mach (abfd) == bfd_mach_ppc) |
| 4315 | internal_a.o_cputype = 3; |
| 4316 | else |
| 4317 | internal_a.o_cputype = 1; |
| 4318 | break; |
| 4319 | default: |
| 4320 | abort (); |
| 4321 | } |
| 4322 | } |
| 4323 | internal_a.o_maxstack = xcoff_data (abfd)->maxstack; |
| 4324 | internal_a.o_maxdata = xcoff_data (abfd)->maxdata; |
| 4325 | } |
| 4326 | #endif |
| 4327 | |
| 4328 | /* Now write them. */ |
| 4329 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 4330 | return FALSE; |
| 4331 | |
| 4332 | { |
| 4333 | char * buff; |
| 4334 | bfd_size_type amount = bfd_coff_filhsz (abfd); |
| 4335 | |
| 4336 | buff = (char *) bfd_malloc (amount); |
| 4337 | if (buff == NULL) |
| 4338 | return FALSE; |
| 4339 | |
| 4340 | bfd_coff_swap_filehdr_out (abfd, & internal_f, buff); |
| 4341 | amount = bfd_bwrite (buff, amount, abfd); |
| 4342 | |
| 4343 | free (buff); |
| 4344 | |
| 4345 | if (amount != bfd_coff_filhsz (abfd)) |
| 4346 | return FALSE; |
| 4347 | } |
| 4348 | |
| 4349 | if (abfd->flags & EXEC_P) |
| 4350 | { |
| 4351 | /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR. |
| 4352 | include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */ |
| 4353 | char * buff; |
| 4354 | bfd_size_type amount = bfd_coff_aoutsz (abfd); |
| 4355 | |
| 4356 | buff = (char *) bfd_malloc (amount); |
| 4357 | if (buff == NULL) |
| 4358 | return FALSE; |
| 4359 | |
| 4360 | coff_swap_aouthdr_out (abfd, & internal_a, buff); |
| 4361 | amount = bfd_bwrite (buff, amount, abfd); |
| 4362 | |
| 4363 | free (buff); |
| 4364 | |
| 4365 | if (amount != bfd_coff_aoutsz (abfd)) |
| 4366 | return FALSE; |
| 4367 | |
| 4368 | #ifdef COFF_IMAGE_WITH_PE |
| 4369 | if (! coff_apply_checksum (abfd)) |
| 4370 | return FALSE; |
| 4371 | #endif |
| 4372 | } |
| 4373 | #ifdef RS6000COFF_C |
| 4374 | else |
| 4375 | { |
| 4376 | AOUTHDR buff; |
| 4377 | size_t size; |
| 4378 | |
| 4379 | /* XCOFF seems to always write at least a small a.out header. */ |
| 4380 | coff_swap_aouthdr_out (abfd, & internal_a, & buff); |
| 4381 | if (xcoff_data (abfd)->full_aouthdr) |
| 4382 | size = bfd_coff_aoutsz (abfd); |
| 4383 | else |
| 4384 | size = SMALL_AOUTSZ; |
| 4385 | if (bfd_bwrite (& buff, (bfd_size_type) size, abfd) != size) |
| 4386 | return FALSE; |
| 4387 | } |
| 4388 | #endif |
| 4389 | |
| 4390 | return TRUE; |
| 4391 | } |
| 4392 | |
| 4393 | static bfd_boolean |
| 4394 | coff_set_section_contents (bfd * abfd, |
| 4395 | sec_ptr section, |
| 4396 | const void * location, |
| 4397 | file_ptr offset, |
| 4398 | bfd_size_type count) |
| 4399 | { |
| 4400 | if (! abfd->output_has_begun) /* Set by bfd.c handler. */ |
| 4401 | { |
| 4402 | if (! coff_compute_section_file_positions (abfd)) |
| 4403 | return FALSE; |
| 4404 | } |
| 4405 | |
| 4406 | #if defined(_LIB) && !defined(TARG_AUX) |
| 4407 | /* The physical address field of a .lib section is used to hold the |
| 4408 | number of shared libraries in the section. This code counts the |
| 4409 | number of sections being written, and increments the lma field |
| 4410 | with the number. |
| 4411 | |
| 4412 | I have found no documentation on the contents of this section. |
| 4413 | Experimentation indicates that the section contains zero or more |
| 4414 | records, each of which has the following structure: |
| 4415 | |
| 4416 | - a (four byte) word holding the length of this record, in words, |
| 4417 | - a word that always seems to be set to "2", |
| 4418 | - the path to a shared library, null-terminated and then padded |
| 4419 | to a whole word boundary. |
| 4420 | |
| 4421 | bfd_assert calls have been added to alert if an attempt is made |
| 4422 | to write a section which doesn't follow these assumptions. The |
| 4423 | code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe |
| 4424 | <robertl@arnet.com> (Thanks!). |
| 4425 | |
| 4426 | Gvran Uddeborg <gvran@uddeborg.pp.se>. */ |
| 4427 | if (strcmp (section->name, _LIB) == 0) |
| 4428 | { |
| 4429 | bfd_byte *rec, *recend; |
| 4430 | |
| 4431 | rec = (bfd_byte *) location; |
| 4432 | recend = rec + count; |
| 4433 | while (rec < recend) |
| 4434 | { |
| 4435 | ++section->lma; |
| 4436 | rec += bfd_get_32 (abfd, rec) * 4; |
| 4437 | } |
| 4438 | |
| 4439 | BFD_ASSERT (rec == recend); |
| 4440 | } |
| 4441 | #endif |
| 4442 | |
| 4443 | /* Don't write out bss sections - one way to do this is to |
| 4444 | see if the filepos has not been set. */ |
| 4445 | if (section->filepos == 0) |
| 4446 | return TRUE; |
| 4447 | |
| 4448 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0) |
| 4449 | return FALSE; |
| 4450 | |
| 4451 | if (count == 0) |
| 4452 | return TRUE; |
| 4453 | |
| 4454 | return bfd_bwrite (location, count, abfd) == count; |
| 4455 | } |
| 4456 | |
| 4457 | static void * |
| 4458 | buy_and_read (bfd *abfd, file_ptr where, bfd_size_type size) |
| 4459 | { |
| 4460 | void * area = bfd_alloc (abfd, size); |
| 4461 | |
| 4462 | if (!area) |
| 4463 | return (NULL); |
| 4464 | if (bfd_seek (abfd, where, SEEK_SET) != 0 |
| 4465 | || bfd_bread (area, size, abfd) != size) |
| 4466 | return (NULL); |
| 4467 | return (area); |
| 4468 | } |
| 4469 | |
| 4470 | /* |
| 4471 | SUBSUBSECTION |
| 4472 | Reading linenumbers |
| 4473 | |
| 4474 | Creating the linenumber table is done by reading in the entire |
| 4475 | coff linenumber table, and creating another table for internal use. |
| 4476 | |
| 4477 | A coff linenumber table is structured so that each function |
| 4478 | is marked as having a line number of 0. Each line within the |
| 4479 | function is an offset from the first line in the function. The |
| 4480 | base of the line number information for the table is stored in |
| 4481 | the symbol associated with the function. |
| 4482 | |
| 4483 | Note: The PE format uses line number 0 for a flag indicating a |
| 4484 | new source file. |
| 4485 | |
| 4486 | The information is copied from the external to the internal |
| 4487 | table, and each symbol which marks a function is marked by |
| 4488 | pointing its... |
| 4489 | |
| 4490 | How does this work ? |
| 4491 | */ |
| 4492 | |
| 4493 | static int |
| 4494 | coff_sort_func_alent (const void * arg1, const void * arg2) |
| 4495 | { |
| 4496 | const alent *al1 = *(const alent **) arg1; |
| 4497 | const alent *al2 = *(const alent **) arg2; |
| 4498 | const coff_symbol_type *s1 = (const coff_symbol_type *) (al1->u.sym); |
| 4499 | const coff_symbol_type *s2 = (const coff_symbol_type *) (al2->u.sym); |
| 4500 | |
| 4501 | if (s1->symbol.value < s2->symbol.value) |
| 4502 | return -1; |
| 4503 | else if (s1->symbol.value > s2->symbol.value) |
| 4504 | return 1; |
| 4505 | |
| 4506 | return 0; |
| 4507 | } |
| 4508 | |
| 4509 | static bfd_boolean |
| 4510 | coff_slurp_line_table (bfd *abfd, asection *asect) |
| 4511 | { |
| 4512 | LINENO *native_lineno; |
| 4513 | alent *lineno_cache; |
| 4514 | bfd_size_type amt; |
| 4515 | unsigned int counter; |
| 4516 | alent *cache_ptr; |
| 4517 | bfd_vma prev_offset = 0; |
| 4518 | int ordered = 1; |
| 4519 | unsigned int nbr_func; |
| 4520 | LINENO *src; |
| 4521 | |
| 4522 | BFD_ASSERT (asect->lineno == NULL); |
| 4523 | |
| 4524 | amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent); |
| 4525 | lineno_cache = (alent *) bfd_alloc (abfd, amt); |
| 4526 | if (lineno_cache == NULL) |
| 4527 | return FALSE; |
| 4528 | |
| 4529 | amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count; |
| 4530 | native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt); |
| 4531 | if (native_lineno == NULL) |
| 4532 | { |
| 4533 | (*_bfd_error_handler) |
| 4534 | (_("%B: warning: line number table read failed"), abfd); |
| 4535 | bfd_release (abfd, lineno_cache); |
| 4536 | return FALSE; |
| 4537 | } |
| 4538 | |
| 4539 | cache_ptr = lineno_cache; |
| 4540 | asect->lineno = lineno_cache; |
| 4541 | src = native_lineno; |
| 4542 | nbr_func = 0; |
| 4543 | |
| 4544 | for (counter = 0; counter < asect->lineno_count; counter++) |
| 4545 | { |
| 4546 | struct internal_lineno dst; |
| 4547 | |
| 4548 | bfd_coff_swap_lineno_in (abfd, src, &dst); |
| 4549 | cache_ptr->line_number = dst.l_lnno; |
| 4550 | |
| 4551 | if (cache_ptr->line_number == 0) |
| 4552 | { |
| 4553 | bfd_boolean warned; |
| 4554 | bfd_signed_vma symndx; |
| 4555 | coff_symbol_type *sym; |
| 4556 | |
| 4557 | nbr_func++; |
| 4558 | warned = FALSE; |
| 4559 | symndx = dst.l_addr.l_symndx; |
| 4560 | if (symndx < 0 |
| 4561 | || (bfd_vma) symndx >= obj_raw_syment_count (abfd)) |
| 4562 | { |
| 4563 | (*_bfd_error_handler) |
| 4564 | (_("%B: warning: illegal symbol index %ld in line numbers"), |
| 4565 | abfd, (long) symndx); |
| 4566 | symndx = 0; |
| 4567 | warned = TRUE; |
| 4568 | } |
| 4569 | |
| 4570 | /* FIXME: We should not be casting between ints and |
| 4571 | pointers like this. */ |
| 4572 | sym = ((coff_symbol_type *) |
| 4573 | ((symndx + obj_raw_syments (abfd)) |
| 4574 | ->u.syment._n._n_n._n_zeroes)); |
| 4575 | cache_ptr->u.sym = (asymbol *) sym; |
| 4576 | if (sym->lineno != NULL && ! warned) |
| 4577 | (*_bfd_error_handler) |
| 4578 | (_("%B: warning: duplicate line number information for `%s'"), |
| 4579 | abfd, bfd_asymbol_name (&sym->symbol)); |
| 4580 | |
| 4581 | sym->lineno = cache_ptr; |
| 4582 | if (sym->symbol.value < prev_offset) |
| 4583 | ordered = 0; |
| 4584 | prev_offset = sym->symbol.value; |
| 4585 | } |
| 4586 | else |
| 4587 | cache_ptr->u.offset = dst.l_addr.l_paddr |
| 4588 | - bfd_section_vma (abfd, asect); |
| 4589 | |
| 4590 | cache_ptr++; |
| 4591 | src++; |
| 4592 | } |
| 4593 | cache_ptr->line_number = 0; |
| 4594 | bfd_release (abfd, native_lineno); |
| 4595 | |
| 4596 | /* On some systems (eg AIX5.3) the lineno table may not be sorted. */ |
| 4597 | if (!ordered) |
| 4598 | { |
| 4599 | /* Sort the table. */ |
| 4600 | alent **func_table; |
| 4601 | alent *n_lineno_cache; |
| 4602 | |
| 4603 | /* Create a table of functions. */ |
| 4604 | func_table = (alent **) bfd_alloc (abfd, nbr_func * sizeof (alent *)); |
| 4605 | if (func_table != NULL) |
| 4606 | { |
| 4607 | alent **p = func_table; |
| 4608 | unsigned int i; |
| 4609 | |
| 4610 | for (i = 0; i < counter; i++) |
| 4611 | if (lineno_cache[i].line_number == 0) |
| 4612 | *p++ = &lineno_cache[i]; |
| 4613 | |
| 4614 | /* Sort by functions. */ |
| 4615 | qsort (func_table, nbr_func, sizeof (alent *), coff_sort_func_alent); |
| 4616 | |
| 4617 | /* Create the new sorted table. */ |
| 4618 | amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent); |
| 4619 | n_lineno_cache = (alent *) bfd_alloc (abfd, amt); |
| 4620 | if (n_lineno_cache != NULL) |
| 4621 | { |
| 4622 | alent *n_cache_ptr = n_lineno_cache; |
| 4623 | |
| 4624 | for (i = 0; i < nbr_func; i++) |
| 4625 | { |
| 4626 | coff_symbol_type *sym; |
| 4627 | alent *old_ptr = func_table[i]; |
| 4628 | |
| 4629 | /* Copy the function entry and update it. */ |
| 4630 | *n_cache_ptr = *old_ptr; |
| 4631 | sym = (coff_symbol_type *)n_cache_ptr->u.sym; |
| 4632 | sym->lineno = n_cache_ptr; |
| 4633 | n_cache_ptr++; |
| 4634 | old_ptr++; |
| 4635 | |
| 4636 | /* Copy the line number entries. */ |
| 4637 | while (old_ptr->line_number != 0) |
| 4638 | *n_cache_ptr++ = *old_ptr++; |
| 4639 | } |
| 4640 | n_cache_ptr->line_number = 0; |
| 4641 | memcpy (lineno_cache, n_lineno_cache, amt); |
| 4642 | } |
| 4643 | bfd_release (abfd, func_table); |
| 4644 | } |
| 4645 | } |
| 4646 | |
| 4647 | return TRUE; |
| 4648 | } |
| 4649 | |
| 4650 | /* Slurp in the symbol table, converting it to generic form. Note |
| 4651 | that if coff_relocate_section is defined, the linker will read |
| 4652 | symbols via coff_link_add_symbols, rather than via this routine. */ |
| 4653 | |
| 4654 | static bfd_boolean |
| 4655 | coff_slurp_symbol_table (bfd * abfd) |
| 4656 | { |
| 4657 | combined_entry_type *native_symbols; |
| 4658 | coff_symbol_type *cached_area; |
| 4659 | unsigned int *table_ptr; |
| 4660 | bfd_size_type amt; |
| 4661 | unsigned int number_of_symbols = 0; |
| 4662 | |
| 4663 | if (obj_symbols (abfd)) |
| 4664 | return TRUE; |
| 4665 | |
| 4666 | /* Read in the symbol table. */ |
| 4667 | if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL) |
| 4668 | return FALSE; |
| 4669 | |
| 4670 | /* Allocate enough room for all the symbols in cached form. */ |
| 4671 | amt = obj_raw_syment_count (abfd); |
| 4672 | amt *= sizeof (coff_symbol_type); |
| 4673 | cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt); |
| 4674 | if (cached_area == NULL) |
| 4675 | return FALSE; |
| 4676 | |
| 4677 | amt = obj_raw_syment_count (abfd); |
| 4678 | amt *= sizeof (unsigned int); |
| 4679 | table_ptr = (unsigned int *) bfd_alloc (abfd, amt); |
| 4680 | |
| 4681 | if (table_ptr == NULL) |
| 4682 | return FALSE; |
| 4683 | else |
| 4684 | { |
| 4685 | coff_symbol_type *dst = cached_area; |
| 4686 | unsigned int last_native_index = obj_raw_syment_count (abfd); |
| 4687 | unsigned int this_index = 0; |
| 4688 | |
| 4689 | while (this_index < last_native_index) |
| 4690 | { |
| 4691 | combined_entry_type *src = native_symbols + this_index; |
| 4692 | table_ptr[this_index] = number_of_symbols; |
| 4693 | dst->symbol.the_bfd = abfd; |
| 4694 | |
| 4695 | dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset); |
| 4696 | /* We use the native name field to point to the cached field. */ |
| 4697 | src->u.syment._n._n_n._n_zeroes = (bfd_hostptr_t) dst; |
| 4698 | dst->symbol.section = coff_section_from_bfd_index (abfd, |
| 4699 | src->u.syment.n_scnum); |
| 4700 | dst->symbol.flags = 0; |
| 4701 | dst->done_lineno = FALSE; |
| 4702 | |
| 4703 | switch (src->u.syment.n_sclass) |
| 4704 | { |
| 4705 | #ifdef I960 |
| 4706 | case C_LEAFEXT: |
| 4707 | /* Fall through to next case. */ |
| 4708 | #endif |
| 4709 | |
| 4710 | case C_EXT: |
| 4711 | case C_WEAKEXT: |
| 4712 | #if defined ARM |
| 4713 | case C_THUMBEXT: |
| 4714 | case C_THUMBEXTFUNC: |
| 4715 | #endif |
| 4716 | #ifdef RS6000COFF_C |
| 4717 | case C_HIDEXT: |
| 4718 | #endif |
| 4719 | #ifdef C_SYSTEM |
| 4720 | case C_SYSTEM: /* System Wide variable. */ |
| 4721 | #endif |
| 4722 | #ifdef COFF_WITH_PE |
| 4723 | /* In PE, 0x68 (104) denotes a section symbol. */ |
| 4724 | case C_SECTION: |
| 4725 | /* In PE, 0x69 (105) denotes a weak external symbol. */ |
| 4726 | case C_NT_WEAK: |
| 4727 | #endif |
| 4728 | switch (coff_classify_symbol (abfd, &src->u.syment)) |
| 4729 | { |
| 4730 | case COFF_SYMBOL_GLOBAL: |
| 4731 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; |
| 4732 | #if defined COFF_WITH_PE |
| 4733 | /* PE sets the symbol to a value relative to the |
| 4734 | start of the section. */ |
| 4735 | dst->symbol.value = src->u.syment.n_value; |
| 4736 | #else |
| 4737 | dst->symbol.value = (src->u.syment.n_value |
| 4738 | - dst->symbol.section->vma); |
| 4739 | #endif |
| 4740 | if (ISFCN ((src->u.syment.n_type))) |
| 4741 | /* A function ext does not go at the end of a |
| 4742 | file. */ |
| 4743 | dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION; |
| 4744 | break; |
| 4745 | |
| 4746 | case COFF_SYMBOL_COMMON: |
| 4747 | dst->symbol.section = bfd_com_section_ptr; |
| 4748 | dst->symbol.value = src->u.syment.n_value; |
| 4749 | break; |
| 4750 | |
| 4751 | case COFF_SYMBOL_UNDEFINED: |
| 4752 | dst->symbol.section = bfd_und_section_ptr; |
| 4753 | dst->symbol.value = 0; |
| 4754 | break; |
| 4755 | |
| 4756 | case COFF_SYMBOL_PE_SECTION: |
| 4757 | dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM; |
| 4758 | dst->symbol.value = 0; |
| 4759 | break; |
| 4760 | |
| 4761 | case COFF_SYMBOL_LOCAL: |
| 4762 | dst->symbol.flags = BSF_LOCAL; |
| 4763 | #if defined COFF_WITH_PE |
| 4764 | /* PE sets the symbol to a value relative to the |
| 4765 | start of the section. */ |
| 4766 | dst->symbol.value = src->u.syment.n_value; |
| 4767 | #else |
| 4768 | dst->symbol.value = (src->u.syment.n_value |
| 4769 | - dst->symbol.section->vma); |
| 4770 | #endif |
| 4771 | if (ISFCN ((src->u.syment.n_type))) |
| 4772 | dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION; |
| 4773 | break; |
| 4774 | } |
| 4775 | |
| 4776 | #ifdef RS6000COFF_C |
| 4777 | /* A symbol with a csect entry should not go at the end. */ |
| 4778 | if (src->u.syment.n_numaux > 0) |
| 4779 | dst->symbol.flags |= BSF_NOT_AT_END; |
| 4780 | #endif |
| 4781 | |
| 4782 | #ifdef COFF_WITH_PE |
| 4783 | if (src->u.syment.n_sclass == C_NT_WEAK) |
| 4784 | dst->symbol.flags |= BSF_WEAK; |
| 4785 | |
| 4786 | if (src->u.syment.n_sclass == C_SECTION |
| 4787 | && src->u.syment.n_scnum > 0) |
| 4788 | dst->symbol.flags = BSF_LOCAL; |
| 4789 | #endif |
| 4790 | if (src->u.syment.n_sclass == C_WEAKEXT) |
| 4791 | dst->symbol.flags |= BSF_WEAK; |
| 4792 | |
| 4793 | break; |
| 4794 | |
| 4795 | case C_STAT: /* Static. */ |
| 4796 | #ifdef I960 |
| 4797 | case C_LEAFSTAT: /* Static leaf procedure. */ |
| 4798 | #endif |
| 4799 | #if defined ARM |
| 4800 | case C_THUMBSTAT: /* Thumb static. */ |
| 4801 | case C_THUMBLABEL: /* Thumb label. */ |
| 4802 | case C_THUMBSTATFUNC:/* Thumb static function. */ |
| 4803 | #endif |
| 4804 | #ifdef RS6000COFF_C |
| 4805 | case C_DWARF: /* A label in a dwarf section. */ |
| 4806 | case C_INFO: /* A label in a comment section. */ |
| 4807 | #endif |
| 4808 | case C_LABEL: /* Label. */ |
| 4809 | if (src->u.syment.n_scnum == N_DEBUG) |
| 4810 | dst->symbol.flags = BSF_DEBUGGING; |
| 4811 | else |
| 4812 | dst->symbol.flags = BSF_LOCAL; |
| 4813 | |
| 4814 | /* Base the value as an index from the base of the |
| 4815 | section, if there is one. */ |
| 4816 | if (dst->symbol.section) |
| 4817 | { |
| 4818 | #if defined COFF_WITH_PE |
| 4819 | /* PE sets the symbol to a value relative to the |
| 4820 | start of the section. */ |
| 4821 | dst->symbol.value = src->u.syment.n_value; |
| 4822 | #else |
| 4823 | dst->symbol.value = (src->u.syment.n_value |
| 4824 | - dst->symbol.section->vma); |
| 4825 | #endif |
| 4826 | } |
| 4827 | else |
| 4828 | dst->symbol.value = src->u.syment.n_value; |
| 4829 | break; |
| 4830 | |
| 4831 | case C_MOS: /* Member of structure. */ |
| 4832 | case C_EOS: /* End of structure. */ |
| 4833 | case C_REGPARM: /* Register parameter. */ |
| 4834 | case C_REG: /* register variable. */ |
| 4835 | /* C_AUTOARG conflicts with TI COFF C_UEXT. */ |
| 4836 | #if !defined (TIC80COFF) && !defined (TICOFF) |
| 4837 | #ifdef C_AUTOARG |
| 4838 | case C_AUTOARG: /* 960-specific storage class. */ |
| 4839 | #endif |
| 4840 | #endif |
| 4841 | case C_TPDEF: /* Type definition. */ |
| 4842 | case C_ARG: |
| 4843 | case C_AUTO: /* Automatic variable. */ |
| 4844 | case C_FIELD: /* Bit field. */ |
| 4845 | case C_ENTAG: /* Enumeration tag. */ |
| 4846 | case C_MOE: /* Member of enumeration. */ |
| 4847 | case C_MOU: /* Member of union. */ |
| 4848 | case C_UNTAG: /* Union tag. */ |
| 4849 | dst->symbol.flags = BSF_DEBUGGING; |
| 4850 | dst->symbol.value = (src->u.syment.n_value); |
| 4851 | break; |
| 4852 | |
| 4853 | case C_FILE: /* File name. */ |
| 4854 | case C_STRTAG: /* Structure tag. */ |
| 4855 | #ifdef RS6000COFF_C |
| 4856 | case C_GSYM: |
| 4857 | case C_LSYM: |
| 4858 | case C_PSYM: |
| 4859 | case C_RSYM: |
| 4860 | case C_RPSYM: |
| 4861 | case C_STSYM: |
| 4862 | case C_TCSYM: |
| 4863 | case C_BCOMM: |
| 4864 | case C_ECOML: |
| 4865 | case C_ECOMM: |
| 4866 | case C_DECL: |
| 4867 | case C_ENTRY: |
| 4868 | case C_FUN: |
| 4869 | case C_ESTAT: |
| 4870 | #endif |
| 4871 | dst->symbol.flags = BSF_DEBUGGING; |
| 4872 | dst->symbol.value = (src->u.syment.n_value); |
| 4873 | break; |
| 4874 | |
| 4875 | #ifdef RS6000COFF_C |
| 4876 | case C_BINCL: /* Beginning of include file. */ |
| 4877 | case C_EINCL: /* Ending of include file. */ |
| 4878 | /* The value is actually a pointer into the line numbers |
| 4879 | of the file. We locate the line number entry, and |
| 4880 | set the section to the section which contains it, and |
| 4881 | the value to the index in that section. */ |
| 4882 | { |
| 4883 | asection *sec; |
| 4884 | |
| 4885 | dst->symbol.flags = BSF_DEBUGGING; |
| 4886 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 4887 | if (sec->line_filepos <= (file_ptr) src->u.syment.n_value |
| 4888 | && ((file_ptr) (sec->line_filepos |
| 4889 | + sec->lineno_count * bfd_coff_linesz (abfd)) |
| 4890 | > (file_ptr) src->u.syment.n_value)) |
| 4891 | break; |
| 4892 | if (sec == NULL) |
| 4893 | dst->symbol.value = 0; |
| 4894 | else |
| 4895 | { |
| 4896 | dst->symbol.section = sec; |
| 4897 | dst->symbol.value = ((src->u.syment.n_value |
| 4898 | - sec->line_filepos) |
| 4899 | / bfd_coff_linesz (abfd)); |
| 4900 | src->fix_line = 1; |
| 4901 | } |
| 4902 | } |
| 4903 | break; |
| 4904 | |
| 4905 | case C_BSTAT: |
| 4906 | dst->symbol.flags = BSF_DEBUGGING; |
| 4907 | |
| 4908 | /* The value is actually a symbol index. Save a pointer |
| 4909 | to the symbol instead of the index. FIXME: This |
| 4910 | should use a union. */ |
| 4911 | src->u.syment.n_value = |
| 4912 | (long) (intptr_t) (native_symbols + src->u.syment.n_value); |
| 4913 | dst->symbol.value = src->u.syment.n_value; |
| 4914 | src->fix_value = 1; |
| 4915 | break; |
| 4916 | #endif |
| 4917 | |
| 4918 | case C_BLOCK: /* ".bb" or ".eb". */ |
| 4919 | case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */ |
| 4920 | case C_EFCN: /* Physical end of function. */ |
| 4921 | #if defined COFF_WITH_PE |
| 4922 | /* PE sets the symbol to a value relative to the start |
| 4923 | of the section. */ |
| 4924 | dst->symbol.value = src->u.syment.n_value; |
| 4925 | if (strcmp (dst->symbol.name, ".bf") != 0) |
| 4926 | { |
| 4927 | /* PE uses funny values for .ef and .lf; don't |
| 4928 | relocate them. */ |
| 4929 | dst->symbol.flags = BSF_DEBUGGING; |
| 4930 | } |
| 4931 | else |
| 4932 | dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC; |
| 4933 | #else |
| 4934 | /* Base the value as an index from the base of the |
| 4935 | section. */ |
| 4936 | dst->symbol.flags = BSF_LOCAL; |
| 4937 | dst->symbol.value = (src->u.syment.n_value |
| 4938 | - dst->symbol.section->vma); |
| 4939 | #endif |
| 4940 | break; |
| 4941 | |
| 4942 | case C_STATLAB: /* Static load time label. */ |
| 4943 | dst->symbol.value = src->u.syment.n_value; |
| 4944 | dst->symbol.flags = BSF_GLOBAL; |
| 4945 | break; |
| 4946 | |
| 4947 | case C_NULL: |
| 4948 | /* PE DLLs sometimes have zeroed out symbols for some |
| 4949 | reason. Just ignore them without a warning. */ |
| 4950 | if (src->u.syment.n_type == 0 |
| 4951 | && src->u.syment.n_value == 0 |
| 4952 | && src->u.syment.n_scnum == 0) |
| 4953 | break; |
| 4954 | #ifdef RS6000COFF_C |
| 4955 | /* XCOFF specific: deleted entry. */ |
| 4956 | if (src->u.syment.n_value == C_NULL_VALUE) |
| 4957 | break; |
| 4958 | #endif |
| 4959 | /* Fall through. */ |
| 4960 | case C_EXTDEF: /* External definition. */ |
| 4961 | case C_ULABEL: /* Undefined label. */ |
| 4962 | case C_USTATIC: /* Undefined static. */ |
| 4963 | #ifndef COFF_WITH_PE |
| 4964 | /* C_LINE in regular coff is 0x68. NT has taken over this storage |
| 4965 | class to represent a section symbol. */ |
| 4966 | case C_LINE: /* line # reformatted as symbol table entry. */ |
| 4967 | /* NT uses 0x67 for a weak symbol, not C_ALIAS. */ |
| 4968 | case C_ALIAS: /* Duplicate tag. */ |
| 4969 | #endif |
| 4970 | /* New storage classes for TI COFF. */ |
| 4971 | #if defined(TIC80COFF) || defined(TICOFF) |
| 4972 | case C_UEXT: /* Tentative external definition. */ |
| 4973 | #endif |
| 4974 | case C_EXTLAB: /* External load time label. */ |
| 4975 | case C_HIDDEN: /* Ext symbol in dmert public lib. */ |
| 4976 | default: |
| 4977 | (*_bfd_error_handler) |
| 4978 | (_("%B: Unrecognized storage class %d for %s symbol `%s'"), |
| 4979 | abfd, src->u.syment.n_sclass, |
| 4980 | dst->symbol.section->name, dst->symbol.name); |
| 4981 | dst->symbol.flags = BSF_DEBUGGING; |
| 4982 | dst->symbol.value = (src->u.syment.n_value); |
| 4983 | break; |
| 4984 | } |
| 4985 | |
| 4986 | dst->native = src; |
| 4987 | |
| 4988 | dst->symbol.udata.i = 0; |
| 4989 | dst->lineno = NULL; |
| 4990 | this_index += (src->u.syment.n_numaux) + 1; |
| 4991 | dst++; |
| 4992 | number_of_symbols++; |
| 4993 | } |
| 4994 | } |
| 4995 | |
| 4996 | obj_symbols (abfd) = cached_area; |
| 4997 | obj_raw_syments (abfd) = native_symbols; |
| 4998 | |
| 4999 | bfd_get_symcount (abfd) = number_of_symbols; |
| 5000 | obj_convert (abfd) = table_ptr; |
| 5001 | /* Slurp the line tables for each section too. */ |
| 5002 | { |
| 5003 | asection *p; |
| 5004 | |
| 5005 | p = abfd->sections; |
| 5006 | while (p) |
| 5007 | { |
| 5008 | coff_slurp_line_table (abfd, p); |
| 5009 | p = p->next; |
| 5010 | } |
| 5011 | } |
| 5012 | |
| 5013 | return TRUE; |
| 5014 | } |
| 5015 | |
| 5016 | /* Classify a COFF symbol. A couple of targets have globally visible |
| 5017 | symbols which are not class C_EXT, and this handles those. It also |
| 5018 | recognizes some special PE cases. */ |
| 5019 | |
| 5020 | static enum coff_symbol_classification |
| 5021 | coff_classify_symbol (bfd *abfd, |
| 5022 | struct internal_syment *syment) |
| 5023 | { |
| 5024 | /* FIXME: This partially duplicates the switch in |
| 5025 | coff_slurp_symbol_table. */ |
| 5026 | switch (syment->n_sclass) |
| 5027 | { |
| 5028 | case C_EXT: |
| 5029 | case C_WEAKEXT: |
| 5030 | #ifdef I960 |
| 5031 | case C_LEAFEXT: |
| 5032 | #endif |
| 5033 | #ifdef ARM |
| 5034 | case C_THUMBEXT: |
| 5035 | case C_THUMBEXTFUNC: |
| 5036 | #endif |
| 5037 | #ifdef C_SYSTEM |
| 5038 | case C_SYSTEM: |
| 5039 | #endif |
| 5040 | #ifdef COFF_WITH_PE |
| 5041 | case C_NT_WEAK: |
| 5042 | #endif |
| 5043 | if (syment->n_scnum == 0) |
| 5044 | { |
| 5045 | if (syment->n_value == 0) |
| 5046 | return COFF_SYMBOL_UNDEFINED; |
| 5047 | else |
| 5048 | return COFF_SYMBOL_COMMON; |
| 5049 | } |
| 5050 | return COFF_SYMBOL_GLOBAL; |
| 5051 | |
| 5052 | default: |
| 5053 | break; |
| 5054 | } |
| 5055 | |
| 5056 | #ifdef COFF_WITH_PE |
| 5057 | if (syment->n_sclass == C_STAT) |
| 5058 | { |
| 5059 | if (syment->n_scnum == 0) |
| 5060 | /* The Microsoft compiler sometimes generates these if a |
| 5061 | small static function is inlined every time it is used. |
| 5062 | The function is discarded, but the symbol table entry |
| 5063 | remains. */ |
| 5064 | return COFF_SYMBOL_LOCAL; |
| 5065 | |
| 5066 | #ifdef STRICT_PE_FORMAT |
| 5067 | /* This is correct for Microsoft generated objects, but it |
| 5068 | breaks gas generated objects. */ |
| 5069 | if (syment->n_value == 0) |
| 5070 | { |
| 5071 | asection *sec; |
| 5072 | char buf[SYMNMLEN + 1]; |
| 5073 | |
| 5074 | sec = coff_section_from_bfd_index (abfd, syment->n_scnum); |
| 5075 | if (sec != NULL |
| 5076 | && (strcmp (bfd_get_section_name (abfd, sec), |
| 5077 | _bfd_coff_internal_syment_name (abfd, syment, buf)) |
| 5078 | == 0)) |
| 5079 | return COFF_SYMBOL_PE_SECTION; |
| 5080 | } |
| 5081 | #endif |
| 5082 | |
| 5083 | return COFF_SYMBOL_LOCAL; |
| 5084 | } |
| 5085 | |
| 5086 | if (syment->n_sclass == C_SECTION) |
| 5087 | { |
| 5088 | /* In some cases in a DLL generated by the Microsoft linker, the |
| 5089 | n_value field will contain garbage. FIXME: This should |
| 5090 | probably be handled by the swapping function instead. */ |
| 5091 | syment->n_value = 0; |
| 5092 | if (syment->n_scnum == 0) |
| 5093 | return COFF_SYMBOL_UNDEFINED; |
| 5094 | return COFF_SYMBOL_PE_SECTION; |
| 5095 | } |
| 5096 | #endif /* COFF_WITH_PE */ |
| 5097 | |
| 5098 | /* If it is not a global symbol, we presume it is a local symbol. */ |
| 5099 | if (syment->n_scnum == 0) |
| 5100 | { |
| 5101 | char buf[SYMNMLEN + 1]; |
| 5102 | |
| 5103 | (*_bfd_error_handler) |
| 5104 | (_("warning: %B: local symbol `%s' has no section"), |
| 5105 | abfd, _bfd_coff_internal_syment_name (abfd, syment, buf)); |
| 5106 | } |
| 5107 | |
| 5108 | return COFF_SYMBOL_LOCAL; |
| 5109 | } |
| 5110 | |
| 5111 | /* |
| 5112 | SUBSUBSECTION |
| 5113 | Reading relocations |
| 5114 | |
| 5115 | Coff relocations are easily transformed into the internal BFD form |
| 5116 | (@code{arelent}). |
| 5117 | |
| 5118 | Reading a coff relocation table is done in the following stages: |
| 5119 | |
| 5120 | o Read the entire coff relocation table into memory. |
| 5121 | |
| 5122 | o Process each relocation in turn; first swap it from the |
| 5123 | external to the internal form. |
| 5124 | |
| 5125 | o Turn the symbol referenced in the relocation's symbol index |
| 5126 | into a pointer into the canonical symbol table. |
| 5127 | This table is the same as the one returned by a call to |
| 5128 | @code{bfd_canonicalize_symtab}. The back end will call that |
| 5129 | routine and save the result if a canonicalization hasn't been done. |
| 5130 | |
| 5131 | o The reloc index is turned into a pointer to a howto |
| 5132 | structure, in a back end specific way. For instance, the 386 |
| 5133 | and 960 use the @code{r_type} to directly produce an index |
| 5134 | into a howto table vector; the 88k subtracts a number from the |
| 5135 | @code{r_type} field and creates an addend field. |
| 5136 | */ |
| 5137 | |
| 5138 | #ifndef CALC_ADDEND |
| 5139 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ |
| 5140 | { \ |
| 5141 | coff_symbol_type *coffsym = NULL; \ |
| 5142 | \ |
| 5143 | if (ptr && bfd_asymbol_bfd (ptr) != abfd) \ |
| 5144 | coffsym = (obj_symbols (abfd) \ |
| 5145 | + (cache_ptr->sym_ptr_ptr - symbols)); \ |
| 5146 | else if (ptr) \ |
| 5147 | coffsym = coff_symbol_from (abfd, ptr); \ |
| 5148 | if (coffsym != NULL \ |
| 5149 | && coffsym->native->u.syment.n_scnum == 0) \ |
| 5150 | cache_ptr->addend = 0; \ |
| 5151 | else if (ptr && bfd_asymbol_bfd (ptr) == abfd \ |
| 5152 | && ptr->section != NULL) \ |
| 5153 | cache_ptr->addend = - (ptr->section->vma + ptr->value); \ |
| 5154 | else \ |
| 5155 | cache_ptr->addend = 0; \ |
| 5156 | } |
| 5157 | #endif |
| 5158 | |
| 5159 | static bfd_boolean |
| 5160 | coff_slurp_reloc_table (bfd * abfd, sec_ptr asect, asymbol ** symbols) |
| 5161 | { |
| 5162 | RELOC *native_relocs; |
| 5163 | arelent *reloc_cache; |
| 5164 | arelent *cache_ptr; |
| 5165 | unsigned int idx; |
| 5166 | bfd_size_type amt; |
| 5167 | |
| 5168 | if (asect->relocation) |
| 5169 | return TRUE; |
| 5170 | if (asect->reloc_count == 0) |
| 5171 | return TRUE; |
| 5172 | if (asect->flags & SEC_CONSTRUCTOR) |
| 5173 | return TRUE; |
| 5174 | if (!coff_slurp_symbol_table (abfd)) |
| 5175 | return FALSE; |
| 5176 | |
| 5177 | amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count; |
| 5178 | native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt); |
| 5179 | amt = (bfd_size_type) asect->reloc_count * sizeof (arelent); |
| 5180 | reloc_cache = (arelent *) bfd_alloc (abfd, amt); |
| 5181 | |
| 5182 | if (reloc_cache == NULL || native_relocs == NULL) |
| 5183 | return FALSE; |
| 5184 | |
| 5185 | for (idx = 0; idx < asect->reloc_count; idx++) |
| 5186 | { |
| 5187 | struct internal_reloc dst; |
| 5188 | struct external_reloc *src; |
| 5189 | #ifndef RELOC_PROCESSING |
| 5190 | asymbol *ptr; |
| 5191 | #endif |
| 5192 | |
| 5193 | cache_ptr = reloc_cache + idx; |
| 5194 | src = native_relocs + idx; |
| 5195 | |
| 5196 | dst.r_offset = 0; |
| 5197 | coff_swap_reloc_in (abfd, src, &dst); |
| 5198 | |
| 5199 | #ifdef RELOC_PROCESSING |
| 5200 | RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect); |
| 5201 | #else |
| 5202 | cache_ptr->address = dst.r_vaddr; |
| 5203 | |
| 5204 | if (dst.r_symndx != -1) |
| 5205 | { |
| 5206 | if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd)) |
| 5207 | { |
| 5208 | (*_bfd_error_handler) |
| 5209 | (_("%B: warning: illegal symbol index %ld in relocs"), |
| 5210 | abfd, (long) dst.r_symndx); |
| 5211 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 5212 | ptr = NULL; |
| 5213 | } |
| 5214 | else |
| 5215 | { |
| 5216 | cache_ptr->sym_ptr_ptr = (symbols |
| 5217 | + obj_convert (abfd)[dst.r_symndx]); |
| 5218 | ptr = *(cache_ptr->sym_ptr_ptr); |
| 5219 | } |
| 5220 | } |
| 5221 | else |
| 5222 | { |
| 5223 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 5224 | ptr = NULL; |
| 5225 | } |
| 5226 | |
| 5227 | /* The symbols definitions that we have read in have been |
| 5228 | relocated as if their sections started at 0. But the offsets |
| 5229 | refering to the symbols in the raw data have not been |
| 5230 | modified, so we have to have a negative addend to compensate. |
| 5231 | |
| 5232 | Note that symbols which used to be common must be left alone. */ |
| 5233 | |
| 5234 | /* Calculate any reloc addend by looking at the symbol. */ |
| 5235 | CALC_ADDEND (abfd, ptr, dst, cache_ptr); |
| 5236 | (void) ptr; |
| 5237 | |
| 5238 | cache_ptr->address -= asect->vma; |
| 5239 | /* !! cache_ptr->section = NULL;*/ |
| 5240 | |
| 5241 | /* Fill in the cache_ptr->howto field from dst.r_type. */ |
| 5242 | RTYPE2HOWTO (cache_ptr, &dst); |
| 5243 | #endif /* RELOC_PROCESSING */ |
| 5244 | |
| 5245 | if (cache_ptr->howto == NULL) |
| 5246 | { |
| 5247 | (*_bfd_error_handler) |
| 5248 | (_("%B: illegal relocation type %d at address 0x%lx"), |
| 5249 | abfd, dst.r_type, (long) dst.r_vaddr); |
| 5250 | bfd_set_error (bfd_error_bad_value); |
| 5251 | return FALSE; |
| 5252 | } |
| 5253 | } |
| 5254 | |
| 5255 | asect->relocation = reloc_cache; |
| 5256 | return TRUE; |
| 5257 | } |
| 5258 | |
| 5259 | #ifndef coff_rtype_to_howto |
| 5260 | #ifdef RTYPE2HOWTO |
| 5261 | |
| 5262 | /* Get the howto structure for a reloc. This is only used if the file |
| 5263 | including this one defines coff_relocate_section to be |
| 5264 | _bfd_coff_generic_relocate_section, so it is OK if it does not |
| 5265 | always work. It is the responsibility of the including file to |
| 5266 | make sure it is reasonable if it is needed. */ |
| 5267 | |
| 5268 | static reloc_howto_type * |
| 5269 | coff_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
| 5270 | asection *sec ATTRIBUTE_UNUSED, |
| 5271 | struct internal_reloc *rel, |
| 5272 | struct coff_link_hash_entry *h ATTRIBUTE_UNUSED, |
| 5273 | struct internal_syment *sym ATTRIBUTE_UNUSED, |
| 5274 | bfd_vma *addendp ATTRIBUTE_UNUSED) |
| 5275 | { |
| 5276 | arelent genrel; |
| 5277 | |
| 5278 | genrel.howto = NULL; |
| 5279 | RTYPE2HOWTO (&genrel, rel); |
| 5280 | return genrel.howto; |
| 5281 | } |
| 5282 | |
| 5283 | #else /* ! defined (RTYPE2HOWTO) */ |
| 5284 | |
| 5285 | #define coff_rtype_to_howto NULL |
| 5286 | |
| 5287 | #endif /* ! defined (RTYPE2HOWTO) */ |
| 5288 | #endif /* ! defined (coff_rtype_to_howto) */ |
| 5289 | |
| 5290 | /* This is stupid. This function should be a boolean predicate. */ |
| 5291 | |
| 5292 | static long |
| 5293 | coff_canonicalize_reloc (bfd * abfd, |
| 5294 | sec_ptr section, |
| 5295 | arelent ** relptr, |
| 5296 | asymbol ** symbols) |
| 5297 | { |
| 5298 | arelent *tblptr = section->relocation; |
| 5299 | unsigned int count = 0; |
| 5300 | |
| 5301 | if (section->flags & SEC_CONSTRUCTOR) |
| 5302 | { |
| 5303 | /* This section has relocs made up by us, they are not in the |
| 5304 | file, so take them out of their chain and place them into |
| 5305 | the data area provided. */ |
| 5306 | arelent_chain *chain = section->constructor_chain; |
| 5307 | |
| 5308 | for (count = 0; count < section->reloc_count; count++) |
| 5309 | { |
| 5310 | *relptr++ = &chain->relent; |
| 5311 | chain = chain->next; |
| 5312 | } |
| 5313 | } |
| 5314 | else |
| 5315 | { |
| 5316 | if (! coff_slurp_reloc_table (abfd, section, symbols)) |
| 5317 | return -1; |
| 5318 | |
| 5319 | tblptr = section->relocation; |
| 5320 | |
| 5321 | for (; count++ < section->reloc_count;) |
| 5322 | *relptr++ = tblptr++; |
| 5323 | } |
| 5324 | *relptr = 0; |
| 5325 | return section->reloc_count; |
| 5326 | } |
| 5327 | |
| 5328 | #ifndef coff_reloc16_estimate |
| 5329 | #define coff_reloc16_estimate dummy_reloc16_estimate |
| 5330 | |
| 5331 | static int |
| 5332 | dummy_reloc16_estimate (bfd *abfd ATTRIBUTE_UNUSED, |
| 5333 | asection *input_section ATTRIBUTE_UNUSED, |
| 5334 | arelent *reloc ATTRIBUTE_UNUSED, |
| 5335 | unsigned int shrink ATTRIBUTE_UNUSED, |
| 5336 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED) |
| 5337 | { |
| 5338 | abort (); |
| 5339 | return 0; |
| 5340 | } |
| 5341 | |
| 5342 | #endif |
| 5343 | |
| 5344 | #ifndef coff_reloc16_extra_cases |
| 5345 | |
| 5346 | #define coff_reloc16_extra_cases dummy_reloc16_extra_cases |
| 5347 | |
| 5348 | /* This works even if abort is not declared in any header file. */ |
| 5349 | |
| 5350 | static void |
| 5351 | dummy_reloc16_extra_cases (bfd *abfd ATTRIBUTE_UNUSED, |
| 5352 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
| 5353 | struct bfd_link_order *link_order ATTRIBUTE_UNUSED, |
| 5354 | arelent *reloc ATTRIBUTE_UNUSED, |
| 5355 | bfd_byte *data ATTRIBUTE_UNUSED, |
| 5356 | unsigned int *src_ptr ATTRIBUTE_UNUSED, |
| 5357 | unsigned int *dst_ptr ATTRIBUTE_UNUSED) |
| 5358 | { |
| 5359 | abort (); |
| 5360 | } |
| 5361 | #endif |
| 5362 | |
| 5363 | #ifndef coff_bfd_link_hash_table_free |
| 5364 | #define coff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free |
| 5365 | #endif |
| 5366 | |
| 5367 | /* If coff_relocate_section is defined, we can use the optimized COFF |
| 5368 | backend linker. Otherwise we must continue to use the old linker. */ |
| 5369 | |
| 5370 | #ifdef coff_relocate_section |
| 5371 | |
| 5372 | #ifndef coff_bfd_link_hash_table_create |
| 5373 | #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create |
| 5374 | #endif |
| 5375 | #ifndef coff_bfd_link_add_symbols |
| 5376 | #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols |
| 5377 | #endif |
| 5378 | #ifndef coff_bfd_final_link |
| 5379 | #define coff_bfd_final_link _bfd_coff_final_link |
| 5380 | #endif |
| 5381 | |
| 5382 | #else /* ! defined (coff_relocate_section) */ |
| 5383 | |
| 5384 | #define coff_relocate_section NULL |
| 5385 | #ifndef coff_bfd_link_hash_table_create |
| 5386 | #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| 5387 | #endif |
| 5388 | #ifndef coff_bfd_link_add_symbols |
| 5389 | #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| 5390 | #endif |
| 5391 | #define coff_bfd_final_link _bfd_generic_final_link |
| 5392 | |
| 5393 | #endif /* ! defined (coff_relocate_section) */ |
| 5394 | |
| 5395 | #define coff_bfd_link_just_syms _bfd_generic_link_just_syms |
| 5396 | #define coff_bfd_copy_link_hash_symbol_type \ |
| 5397 | _bfd_generic_copy_link_hash_symbol_type |
| 5398 | #define coff_bfd_link_split_section _bfd_generic_link_split_section |
| 5399 | |
| 5400 | #ifndef coff_start_final_link |
| 5401 | #define coff_start_final_link NULL |
| 5402 | #endif |
| 5403 | |
| 5404 | #ifndef coff_adjust_symndx |
| 5405 | #define coff_adjust_symndx NULL |
| 5406 | #endif |
| 5407 | |
| 5408 | #ifndef coff_link_add_one_symbol |
| 5409 | #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol |
| 5410 | #endif |
| 5411 | |
| 5412 | #ifndef coff_link_output_has_begun |
| 5413 | |
| 5414 | static bfd_boolean |
| 5415 | coff_link_output_has_begun (bfd * abfd, |
| 5416 | struct coff_final_link_info * info ATTRIBUTE_UNUSED) |
| 5417 | { |
| 5418 | return abfd->output_has_begun; |
| 5419 | } |
| 5420 | #endif |
| 5421 | |
| 5422 | #ifndef coff_final_link_postscript |
| 5423 | |
| 5424 | static bfd_boolean |
| 5425 | coff_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED, |
| 5426 | struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED) |
| 5427 | { |
| 5428 | return TRUE; |
| 5429 | } |
| 5430 | #endif |
| 5431 | |
| 5432 | #ifndef coff_SWAP_aux_in |
| 5433 | #define coff_SWAP_aux_in coff_swap_aux_in |
| 5434 | #endif |
| 5435 | #ifndef coff_SWAP_sym_in |
| 5436 | #define coff_SWAP_sym_in coff_swap_sym_in |
| 5437 | #endif |
| 5438 | #ifndef coff_SWAP_lineno_in |
| 5439 | #define coff_SWAP_lineno_in coff_swap_lineno_in |
| 5440 | #endif |
| 5441 | #ifndef coff_SWAP_aux_out |
| 5442 | #define coff_SWAP_aux_out coff_swap_aux_out |
| 5443 | #endif |
| 5444 | #ifndef coff_SWAP_sym_out |
| 5445 | #define coff_SWAP_sym_out coff_swap_sym_out |
| 5446 | #endif |
| 5447 | #ifndef coff_SWAP_lineno_out |
| 5448 | #define coff_SWAP_lineno_out coff_swap_lineno_out |
| 5449 | #endif |
| 5450 | #ifndef coff_SWAP_reloc_out |
| 5451 | #define coff_SWAP_reloc_out coff_swap_reloc_out |
| 5452 | #endif |
| 5453 | #ifndef coff_SWAP_filehdr_out |
| 5454 | #define coff_SWAP_filehdr_out coff_swap_filehdr_out |
| 5455 | #endif |
| 5456 | #ifndef coff_SWAP_aouthdr_out |
| 5457 | #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out |
| 5458 | #endif |
| 5459 | #ifndef coff_SWAP_scnhdr_out |
| 5460 | #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out |
| 5461 | #endif |
| 5462 | #ifndef coff_SWAP_reloc_in |
| 5463 | #define coff_SWAP_reloc_in coff_swap_reloc_in |
| 5464 | #endif |
| 5465 | #ifndef coff_SWAP_filehdr_in |
| 5466 | #define coff_SWAP_filehdr_in coff_swap_filehdr_in |
| 5467 | #endif |
| 5468 | #ifndef coff_SWAP_aouthdr_in |
| 5469 | #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in |
| 5470 | #endif |
| 5471 | #ifndef coff_SWAP_scnhdr_in |
| 5472 | #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in |
| 5473 | #endif |
| 5474 | |
| 5475 | static bfd_coff_backend_data bfd_coff_std_swap_table ATTRIBUTE_UNUSED = |
| 5476 | { |
| 5477 | coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in, |
| 5478 | coff_SWAP_aux_out, coff_SWAP_sym_out, |
| 5479 | coff_SWAP_lineno_out, coff_SWAP_reloc_out, |
| 5480 | coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out, |
| 5481 | coff_SWAP_scnhdr_out, |
| 5482 | FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN, |
| 5483 | #ifdef COFF_LONG_FILENAMES |
| 5484 | TRUE, |
| 5485 | #else |
| 5486 | FALSE, |
| 5487 | #endif |
| 5488 | COFF_DEFAULT_LONG_SECTION_NAMES, |
| 5489 | COFF_DEFAULT_SECTION_ALIGNMENT_POWER, |
| 5490 | #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS |
| 5491 | TRUE, |
| 5492 | #else |
| 5493 | FALSE, |
| 5494 | #endif |
| 5495 | #ifdef COFF_DEBUG_STRING_WIDE_PREFIX |
| 5496 | 4, |
| 5497 | #else |
| 5498 | 2, |
| 5499 | #endif |
| 5500 | coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in, |
| 5501 | coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook, |
| 5502 | coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook, |
| 5503 | coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook, |
| 5504 | coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate, |
| 5505 | coff_classify_symbol, coff_compute_section_file_positions, |
| 5506 | coff_start_final_link, coff_relocate_section, coff_rtype_to_howto, |
| 5507 | coff_adjust_symndx, coff_link_add_one_symbol, |
| 5508 | coff_link_output_has_begun, coff_final_link_postscript, |
| 5509 | bfd_pe_print_pdata |
| 5510 | }; |
| 5511 | |
| 5512 | #ifdef TICOFF |
| 5513 | /* COFF0 differs in file/section header size and relocation entry size. */ |
| 5514 | |
| 5515 | static bfd_coff_backend_data ticoff0_swap_table = |
| 5516 | { |
| 5517 | coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in, |
| 5518 | coff_SWAP_aux_out, coff_SWAP_sym_out, |
| 5519 | coff_SWAP_lineno_out, coff_SWAP_reloc_out, |
| 5520 | coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out, |
| 5521 | coff_SWAP_scnhdr_out, |
| 5522 | FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN, |
| 5523 | #ifdef COFF_LONG_FILENAMES |
| 5524 | TRUE, |
| 5525 | #else |
| 5526 | FALSE, |
| 5527 | #endif |
| 5528 | COFF_DEFAULT_LONG_SECTION_NAMES, |
| 5529 | COFF_DEFAULT_SECTION_ALIGNMENT_POWER, |
| 5530 | #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS |
| 5531 | TRUE, |
| 5532 | #else |
| 5533 | FALSE, |
| 5534 | #endif |
| 5535 | #ifdef COFF_DEBUG_STRING_WIDE_PREFIX |
| 5536 | 4, |
| 5537 | #else |
| 5538 | 2, |
| 5539 | #endif |
| 5540 | coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in, |
| 5541 | coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook, |
| 5542 | coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook, |
| 5543 | coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook, |
| 5544 | coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate, |
| 5545 | coff_classify_symbol, coff_compute_section_file_positions, |
| 5546 | coff_start_final_link, coff_relocate_section, coff_rtype_to_howto, |
| 5547 | coff_adjust_symndx, coff_link_add_one_symbol, |
| 5548 | coff_link_output_has_begun, coff_final_link_postscript, |
| 5549 | bfd_pe_print_pdata |
| 5550 | }; |
| 5551 | #endif |
| 5552 | |
| 5553 | #ifdef TICOFF |
| 5554 | /* COFF1 differs in section header size. */ |
| 5555 | |
| 5556 | static bfd_coff_backend_data ticoff1_swap_table = |
| 5557 | { |
| 5558 | coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in, |
| 5559 | coff_SWAP_aux_out, coff_SWAP_sym_out, |
| 5560 | coff_SWAP_lineno_out, coff_SWAP_reloc_out, |
| 5561 | coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out, |
| 5562 | coff_SWAP_scnhdr_out, |
| 5563 | FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN, |
| 5564 | #ifdef COFF_LONG_FILENAMES |
| 5565 | TRUE, |
| 5566 | #else |
| 5567 | FALSE, |
| 5568 | #endif |
| 5569 | COFF_DEFAULT_LONG_SECTION_NAMES, |
| 5570 | COFF_DEFAULT_SECTION_ALIGNMENT_POWER, |
| 5571 | #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS |
| 5572 | TRUE, |
| 5573 | #else |
| 5574 | FALSE, |
| 5575 | #endif |
| 5576 | #ifdef COFF_DEBUG_STRING_WIDE_PREFIX |
| 5577 | 4, |
| 5578 | #else |
| 5579 | 2, |
| 5580 | #endif |
| 5581 | coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in, |
| 5582 | coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook, |
| 5583 | coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook, |
| 5584 | coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook, |
| 5585 | coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate, |
| 5586 | coff_classify_symbol, coff_compute_section_file_positions, |
| 5587 | coff_start_final_link, coff_relocate_section, coff_rtype_to_howto, |
| 5588 | coff_adjust_symndx, coff_link_add_one_symbol, |
| 5589 | coff_link_output_has_begun, coff_final_link_postscript, |
| 5590 | bfd_pe_print_pdata /* huh */ |
| 5591 | }; |
| 5592 | #endif |
| 5593 | |
| 5594 | #ifndef coff_close_and_cleanup |
| 5595 | #define coff_close_and_cleanup _bfd_generic_close_and_cleanup |
| 5596 | #endif |
| 5597 | |
| 5598 | #ifndef coff_bfd_free_cached_info |
| 5599 | #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| 5600 | #endif |
| 5601 | |
| 5602 | #ifndef coff_get_section_contents |
| 5603 | #define coff_get_section_contents _bfd_generic_get_section_contents |
| 5604 | #endif |
| 5605 | |
| 5606 | #ifndef coff_bfd_copy_private_symbol_data |
| 5607 | #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data |
| 5608 | #endif |
| 5609 | |
| 5610 | #ifndef coff_bfd_copy_private_header_data |
| 5611 | #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
| 5612 | #endif |
| 5613 | |
| 5614 | #ifndef coff_bfd_copy_private_section_data |
| 5615 | #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data |
| 5616 | #endif |
| 5617 | |
| 5618 | #ifndef coff_bfd_copy_private_bfd_data |
| 5619 | #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data |
| 5620 | #endif |
| 5621 | |
| 5622 | #ifndef coff_bfd_merge_private_bfd_data |
| 5623 | #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data |
| 5624 | #endif |
| 5625 | |
| 5626 | #ifndef coff_bfd_set_private_flags |
| 5627 | #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags |
| 5628 | #endif |
| 5629 | |
| 5630 | #ifndef coff_bfd_print_private_bfd_data |
| 5631 | #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data |
| 5632 | #endif |
| 5633 | |
| 5634 | #ifndef coff_bfd_is_local_label_name |
| 5635 | #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name |
| 5636 | #endif |
| 5637 | |
| 5638 | #ifndef coff_bfd_is_target_special_symbol |
| 5639 | #define coff_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) |
| 5640 | #endif |
| 5641 | |
| 5642 | #ifndef coff_read_minisymbols |
| 5643 | #define coff_read_minisymbols _bfd_generic_read_minisymbols |
| 5644 | #endif |
| 5645 | |
| 5646 | #ifndef coff_minisymbol_to_symbol |
| 5647 | #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 5648 | #endif |
| 5649 | |
| 5650 | /* The reloc lookup routine must be supplied by each individual COFF |
| 5651 | backend. */ |
| 5652 | #ifndef coff_bfd_reloc_type_lookup |
| 5653 | #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup |
| 5654 | #endif |
| 5655 | #ifndef coff_bfd_reloc_name_lookup |
| 5656 | #define coff_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup |
| 5657 | #endif |
| 5658 | |
| 5659 | #ifndef coff_bfd_get_relocated_section_contents |
| 5660 | #define coff_bfd_get_relocated_section_contents \ |
| 5661 | bfd_generic_get_relocated_section_contents |
| 5662 | #endif |
| 5663 | |
| 5664 | #ifndef coff_bfd_relax_section |
| 5665 | #define coff_bfd_relax_section bfd_generic_relax_section |
| 5666 | #endif |
| 5667 | |
| 5668 | #ifndef coff_bfd_gc_sections |
| 5669 | #define coff_bfd_gc_sections bfd_generic_gc_sections |
| 5670 | #endif |
| 5671 | |
| 5672 | #ifndef coff_bfd_lookup_section_flags |
| 5673 | #define coff_bfd_lookup_section_flags bfd_generic_lookup_section_flags |
| 5674 | #endif |
| 5675 | |
| 5676 | #ifndef coff_bfd_merge_sections |
| 5677 | #define coff_bfd_merge_sections bfd_generic_merge_sections |
| 5678 | #endif |
| 5679 | |
| 5680 | #ifndef coff_bfd_is_group_section |
| 5681 | #define coff_bfd_is_group_section bfd_generic_is_group_section |
| 5682 | #endif |
| 5683 | |
| 5684 | #ifndef coff_bfd_discard_group |
| 5685 | #define coff_bfd_discard_group bfd_generic_discard_group |
| 5686 | #endif |
| 5687 | |
| 5688 | #ifndef coff_section_already_linked |
| 5689 | #define coff_section_already_linked \ |
| 5690 | _bfd_coff_section_already_linked |
| 5691 | #endif |
| 5692 | |
| 5693 | #ifndef coff_bfd_define_common_symbol |
| 5694 | #define coff_bfd_define_common_symbol bfd_generic_define_common_symbol |
| 5695 | #endif |
| 5696 | |
| 5697 | #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \ |
| 5698 | const bfd_target VAR = \ |
| 5699 | { \ |
| 5700 | NAME , \ |
| 5701 | bfd_target_coff_flavour, \ |
| 5702 | BFD_ENDIAN_BIG, /* Data byte order is big. */ \ |
| 5703 | BFD_ENDIAN_BIG, /* Header byte order is big. */ \ |
| 5704 | /* object flags */ \ |
| 5705 | (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \ |
| 5706 | HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \ |
| 5707 | /* section flags */ \ |
| 5708 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\ |
| 5709 | UNDER, /* Leading symbol underscore. */ \ |
| 5710 | '/', /* AR_pad_char. */ \ |
| 5711 | 15, /* AR_max_namelen. */ \ |
| 5712 | 0, /* match priority. */ \ |
| 5713 | \ |
| 5714 | /* Data conversion functions. */ \ |
| 5715 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, \ |
| 5716 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, \ |
| 5717 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, \ |
| 5718 | \ |
| 5719 | /* Header conversion functions. */ \ |
| 5720 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, \ |
| 5721 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, \ |
| 5722 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, \ |
| 5723 | \ |
| 5724 | /* bfd_check_format. */ \ |
| 5725 | { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \ |
| 5726 | _bfd_dummy_target }, \ |
| 5727 | /* bfd_set_format. */ \ |
| 5728 | { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \ |
| 5729 | /* bfd_write_contents. */ \ |
| 5730 | { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \ |
| 5731 | bfd_false }, \ |
| 5732 | \ |
| 5733 | BFD_JUMP_TABLE_GENERIC (coff), \ |
| 5734 | BFD_JUMP_TABLE_COPY (coff), \ |
| 5735 | BFD_JUMP_TABLE_CORE (_bfd_nocore), \ |
| 5736 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \ |
| 5737 | BFD_JUMP_TABLE_SYMBOLS (coff), \ |
| 5738 | BFD_JUMP_TABLE_RELOCS (coff), \ |
| 5739 | BFD_JUMP_TABLE_WRITE (coff), \ |
| 5740 | BFD_JUMP_TABLE_LINK (coff), \ |
| 5741 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \ |
| 5742 | \ |
| 5743 | ALTERNATIVE, \ |
| 5744 | \ |
| 5745 | SWAP_TABLE \ |
| 5746 | }; |
| 5747 | |
| 5748 | #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \ |
| 5749 | const bfd_target VAR = \ |
| 5750 | { \ |
| 5751 | NAME , \ |
| 5752 | bfd_target_coff_flavour, \ |
| 5753 | BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \ |
| 5754 | BFD_ENDIAN_BIG, /* Header byte order is big. */ \ |
| 5755 | /* object flags */ \ |
| 5756 | (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \ |
| 5757 | HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \ |
| 5758 | /* section flags */ \ |
| 5759 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\ |
| 5760 | UNDER, /* Leading symbol underscore. */ \ |
| 5761 | '/', /* AR_pad_char. */ \ |
| 5762 | 15, /* AR_max_namelen. */ \ |
| 5763 | 0, /* match priority. */ \ |
| 5764 | \ |
| 5765 | /* Data conversion functions. */ \ |
| 5766 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, \ |
| 5767 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, \ |
| 5768 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, \ |
| 5769 | \ |
| 5770 | /* Header conversion functions. */ \ |
| 5771 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, \ |
| 5772 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, \ |
| 5773 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, \ |
| 5774 | \ |
| 5775 | /* bfd_check_format. */ \ |
| 5776 | { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \ |
| 5777 | _bfd_dummy_target }, \ |
| 5778 | /* bfd_set_format. */ \ |
| 5779 | { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \ |
| 5780 | /* bfd_write_contents. */ \ |
| 5781 | { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \ |
| 5782 | bfd_false }, \ |
| 5783 | \ |
| 5784 | BFD_JUMP_TABLE_GENERIC (coff), \ |
| 5785 | BFD_JUMP_TABLE_COPY (coff), \ |
| 5786 | BFD_JUMP_TABLE_CORE (_bfd_nocore), \ |
| 5787 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \ |
| 5788 | BFD_JUMP_TABLE_SYMBOLS (coff), \ |
| 5789 | BFD_JUMP_TABLE_RELOCS (coff), \ |
| 5790 | BFD_JUMP_TABLE_WRITE (coff), \ |
| 5791 | BFD_JUMP_TABLE_LINK (coff), \ |
| 5792 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \ |
| 5793 | \ |
| 5794 | ALTERNATIVE, \ |
| 5795 | \ |
| 5796 | SWAP_TABLE \ |
| 5797 | }; |
| 5798 | |
| 5799 | #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \ |
| 5800 | const bfd_target VAR = \ |
| 5801 | { \ |
| 5802 | NAME , \ |
| 5803 | bfd_target_coff_flavour, \ |
| 5804 | BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \ |
| 5805 | BFD_ENDIAN_LITTLE, /* Header byte order is little. */ \ |
| 5806 | /* object flags */ \ |
| 5807 | (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \ |
| 5808 | HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \ |
| 5809 | /* section flags */ \ |
| 5810 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\ |
| 5811 | UNDER, /* Leading symbol underscore. */ \ |
| 5812 | '/', /* AR_pad_char. */ \ |
| 5813 | 15, /* AR_max_namelen. */ \ |
| 5814 | 0, /* match priority. */ \ |
| 5815 | \ |
| 5816 | /* Data conversion functions. */ \ |
| 5817 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, \ |
| 5818 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, \ |
| 5819 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, \ |
| 5820 | /* Header conversion functions. */ \ |
| 5821 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, \ |
| 5822 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, \ |
| 5823 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, \ |
| 5824 | /* bfd_check_format. */ \ |
| 5825 | { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \ |
| 5826 | _bfd_dummy_target }, \ |
| 5827 | /* bfd_set_format. */ \ |
| 5828 | { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \ |
| 5829 | /* bfd_write_contents. */ \ |
| 5830 | { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \ |
| 5831 | bfd_false }, \ |
| 5832 | \ |
| 5833 | BFD_JUMP_TABLE_GENERIC (coff), \ |
| 5834 | BFD_JUMP_TABLE_COPY (coff), \ |
| 5835 | BFD_JUMP_TABLE_CORE (_bfd_nocore), \ |
| 5836 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \ |
| 5837 | BFD_JUMP_TABLE_SYMBOLS (coff), \ |
| 5838 | BFD_JUMP_TABLE_RELOCS (coff), \ |
| 5839 | BFD_JUMP_TABLE_WRITE (coff), \ |
| 5840 | BFD_JUMP_TABLE_LINK (coff), \ |
| 5841 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \ |
| 5842 | \ |
| 5843 | ALTERNATIVE, \ |
| 5844 | \ |
| 5845 | SWAP_TABLE \ |
| 5846 | }; |