1 /* NLM (NetWare Loadable Module) executable support for BFD.
2 Copyright 1993, 1994, 1995, 1998, 2000, 2001, 2002
3 Free Software Foundation, Inc.
5 Written by Fred Fish @ Cygnus Support, using ELF support as the
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
29 /* The functions in this file do not use the names they appear to use.
30 This file is actually compiled multiple times, once for each size
31 of NLM target we are using. At each size we use a different name,
32 constructed by the macro nlmNAME. For example, the function which
33 is named nlm_symbol_type below is actually named nlm32_symbol_type
34 in the final executable. */
36 #define Nlm_External_Fixed_Header NlmNAME(External_Fixed_Header)
37 #define Nlm_External_Version_Header NlmNAME(External_Version_Header)
38 #define Nlm_External_Copyright_Header NlmNAME(External_Copyright_Header)
39 #define Nlm_External_Extended_Header NlmNAME(External_Extended_Header)
40 #define Nlm_External_Custom_Header NlmNAME(External_Custom_Header)
41 #define Nlm_External_Cygnus_Ext_Header NlmNAME(External_Cygnus_Ext_Header)
43 #define nlm_symbol_type nlmNAME(symbol_type)
44 #define nlm_get_symtab_upper_bound nlmNAME(get_symtab_upper_bound)
45 #define nlm_get_symtab nlmNAME(get_symtab)
46 #define nlm_make_empty_symbol nlmNAME(make_empty_symbol)
47 #define nlm_print_symbol nlmNAME(print_symbol)
48 #define nlm_get_symbol_info nlmNAME(get_symbol_info)
49 #define nlm_get_reloc_upper_bound nlmNAME(get_reloc_upper_bound)
50 #define nlm_canonicalize_reloc nlmNAME(canonicalize_reloc)
51 #define nlm_object_p nlmNAME(object_p)
52 #define nlm_set_section_contents nlmNAME(set_section_contents)
53 #define nlm_write_object_contents nlmNAME(write_object_contents)
55 #define nlm_swap_fixed_header_in(abfd,src,dst) \
56 (nlm_swap_fixed_header_in_func(abfd)) (abfd,src,dst)
57 #define nlm_swap_fixed_header_out(abfd,src,dst) \
58 (nlm_swap_fixed_header_out_func(abfd)) (abfd,src,dst)
60 /* Forward declarations of static functions */
62 static boolean add_bfd_section
63 PARAMS ((bfd *, char *, file_ptr, bfd_size_type, flagword));
64 static boolean nlm_swap_variable_header_in
66 static boolean nlm_swap_variable_header_out
68 static boolean find_nonzero
69 PARAMS ((PTR, size_t));
70 static boolean nlm_swap_auxiliary_headers_in
72 static boolean nlm_swap_auxiliary_headers_out
74 static boolean nlm_slurp_symbol_table
76 static boolean nlm_slurp_reloc_fixups
78 static boolean nlm_compute_section_file_positions
80 static int nlm_external_reloc_compare
81 PARAMS ((const void *, const void *));
83 /* Should perhaps use put_offset, put_word, etc. For now, the two versions
84 can be handled by explicitly specifying 32 bits or "the long type". */
86 #define put_word H_PUT_64
87 #define get_word H_GET_64
90 #define put_word H_PUT_32
91 #define get_word H_GET_32
98 struct nlm_obj_tdata *preserved_tdata = nlm_tdata (abfd);
99 boolean (*backend_object_p) PARAMS ((bfd *));
101 Nlm_Internal_Fixed_Header *i_fxdhdrp;
102 struct nlm_obj_tdata *new_tdata = NULL;
103 const char *signature;
104 enum bfd_architecture arch;
107 /* Some NLM formats have a prefix before the standard NLM fixed
109 backend_object_p = nlm_backend_object_p_func (abfd);
110 if (backend_object_p)
112 if (!(*backend_object_p) (abfd))
113 goto got_wrong_format_error;
116 /* Read in the fixed length portion of the NLM header in external format. */
118 amt = nlm_fixed_header_size (abfd);
119 x_fxdhdr = (PTR) bfd_malloc (amt);
120 if (x_fxdhdr == NULL)
123 if (bfd_bread ((PTR) x_fxdhdr, amt, abfd) != amt)
125 if (bfd_get_error () != bfd_error_system_call)
126 goto got_wrong_format_error;
131 /* Allocate an instance of the nlm_obj_tdata structure and hook it up to
132 the tdata pointer in the bfd. */
134 amt = sizeof (struct nlm_obj_tdata);
135 new_tdata = (struct nlm_obj_tdata *) bfd_zalloc (abfd, amt);
136 if (new_tdata == NULL)
139 nlm_tdata (abfd) = new_tdata;
141 i_fxdhdrp = nlm_fixed_header (abfd);
142 nlm_swap_fixed_header_in (abfd, x_fxdhdr, i_fxdhdrp);
146 /* Check to see if we have an NLM file for this backend by matching
147 the NLM signature. */
149 signature = nlm_signature (abfd);
150 if (signature != NULL
151 && *signature != '\0'
152 && strncmp ((char *) i_fxdhdrp->signature, signature,
153 NLM_SIGNATURE_SIZE) != 0)
154 goto got_wrong_format_error;
156 /* There's no supported way to discover the endianess of an NLM, so test for
157 a sane version number after doing byte swapping appropriate for this
158 XVEC. (Hack alert!) */
160 if (i_fxdhdrp->version > 0xFFFF)
161 goto got_wrong_format_error;
163 /* There's no supported way to check for 32 bit versus 64 bit addresses,
164 so ignore this distinction for now. (FIXME) */
166 /* Swap in the rest of the required header. */
167 if (!nlm_swap_variable_header_in (abfd))
169 if (bfd_get_error () != bfd_error_system_call)
170 goto got_wrong_format_error;
175 /* Add the sections supplied by all NLM's, and then read in the
176 auxiliary headers. Reading the auxiliary headers may create
177 additional sections described in the cygnus_ext header.
178 From this point on we assume that we have an NLM, and do not
179 treat errors as indicating the wrong format. */
181 if (!add_bfd_section (abfd, NLM_CODE_NAME,
182 i_fxdhdrp->codeImageOffset,
183 i_fxdhdrp->codeImageSize,
184 (SEC_CODE | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
186 || !add_bfd_section (abfd, NLM_INITIALIZED_DATA_NAME,
187 i_fxdhdrp->dataImageOffset,
188 i_fxdhdrp->dataImageSize,
189 (SEC_DATA | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
191 || !add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME,
193 i_fxdhdrp->uninitializedDataSize,
197 if (!nlm_swap_auxiliary_headers_in (abfd))
200 if (nlm_fixed_header (abfd)->numberOfRelocationFixups != 0
201 || nlm_fixed_header (abfd)->numberOfExternalReferences != 0)
202 abfd->flags |= HAS_RELOC;
203 if (nlm_fixed_header (abfd)->numberOfPublics != 0
204 || nlm_fixed_header (abfd)->numberOfDebugRecords != 0
205 || nlm_fixed_header (abfd)->numberOfExternalReferences != 0)
206 abfd->flags |= HAS_SYMS;
208 arch = nlm_architecture (abfd);
209 if (arch != bfd_arch_unknown)
210 bfd_default_set_arch_mach (abfd, arch, (unsigned long) 0);
212 abfd->flags |= EXEC_P;
213 bfd_get_start_address (abfd) = nlm_fixed_header (abfd)->codeStartOffset;
217 got_wrong_format_error:
218 bfd_set_error (bfd_error_wrong_format);
220 nlm_tdata (abfd) = preserved_tdata;
221 if (new_tdata != NULL)
222 bfd_release (abfd, new_tdata);
223 if (x_fxdhdr != NULL)
228 /* Add a section to the bfd. */
231 add_bfd_section (abfd, name, offset, size, flags)
240 newsect = bfd_make_section (abfd, name);
245 newsect->vma = 0; /* NLM's are relocatable. */
246 newsect->_raw_size = size;
247 newsect->filepos = offset;
248 newsect->flags = flags;
249 newsect->alignment_power = bfd_log2 ((bfd_vma) 0); /* FIXME */
253 /* Read and swap in the variable length header. All the fields must
254 exist in the NLM, and must exist in the order they are read here. */
257 nlm_swap_variable_header_in (abfd)
260 unsigned char temp[NLM_TARGET_LONG_SIZE];
263 /* Read the description length and text members. */
265 amt = sizeof (nlm_variable_header (abfd)->descriptionLength);
266 if (bfd_bread ((PTR) &nlm_variable_header (abfd)->descriptionLength,
269 amt = nlm_variable_header (abfd)->descriptionLength + 1;
270 if (bfd_bread ((PTR) nlm_variable_header (abfd)->descriptionText,
274 /* Read and convert the stackSize field. */
277 if (bfd_bread ((PTR) temp, amt, abfd) != amt)
279 nlm_variable_header (abfd)->stackSize = get_word (abfd, (bfd_byte *) temp);
281 /* Read and convert the reserved field. */
284 if (bfd_bread ((PTR) temp, amt, abfd) != amt)
286 nlm_variable_header (abfd)->reserved = get_word (abfd, (bfd_byte *) temp);
288 /* Read the oldThreadName field. This field is a fixed length string. */
290 amt = sizeof (nlm_variable_header (abfd)->oldThreadName);
291 if (bfd_bread ((PTR) nlm_variable_header (abfd)->oldThreadName,
295 /* Read the screen name length and text members. */
297 amt = sizeof (nlm_variable_header (abfd)->screenNameLength);
298 if (bfd_bread ((PTR) & nlm_variable_header (abfd)->screenNameLength,
301 amt = nlm_variable_header (abfd)->screenNameLength + 1;
302 if (bfd_bread ((PTR) nlm_variable_header (abfd)->screenName,
306 /* Read the thread name length and text members. */
308 amt = sizeof (nlm_variable_header (abfd)->threadNameLength);
309 if (bfd_bread ((PTR) & nlm_variable_header (abfd)->threadNameLength,
312 amt = nlm_variable_header (abfd)->threadNameLength + 1;
313 if (bfd_bread ((PTR) nlm_variable_header (abfd)->threadName,
319 /* Swap and write out the variable length header. All the fields must
320 exist in the NLM, and must exist in this order. */
323 nlm_swap_variable_header_out (abfd)
326 unsigned char temp[NLM_TARGET_LONG_SIZE];
329 /* Write the description length and text members. */
331 amt = sizeof (nlm_variable_header (abfd)->descriptionLength);
332 if (bfd_bwrite ((PTR) & nlm_variable_header (abfd)->descriptionLength, amt,
335 amt = nlm_variable_header (abfd)->descriptionLength + 1;
336 if (bfd_bwrite ((PTR) nlm_variable_header (abfd)->descriptionText, amt,
340 /* Convert and write the stackSize field. */
342 put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->stackSize,
345 if (bfd_bwrite ((PTR) temp, amt, abfd) != amt)
348 /* Convert and write the reserved field. */
350 put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->reserved,
353 if (bfd_bwrite ((PTR) temp, amt, abfd) != amt)
356 /* Write the oldThreadName field. This field is a fixed length string. */
358 amt = sizeof (nlm_variable_header (abfd)->oldThreadName);
359 if (bfd_bwrite ((PTR) nlm_variable_header (abfd)->oldThreadName, amt,
363 /* Write the screen name length and text members. */
365 amt = sizeof (nlm_variable_header (abfd)->screenNameLength);
366 if (bfd_bwrite ((PTR) & nlm_variable_header (abfd)->screenNameLength, amt,
369 amt = nlm_variable_header (abfd)->screenNameLength + 1;
370 if (bfd_bwrite ((PTR) nlm_variable_header (abfd)->screenName, amt,
374 /* Write the thread name length and text members. */
376 amt = sizeof (nlm_variable_header (abfd)->threadNameLength);
377 if (bfd_bwrite ((PTR) & nlm_variable_header (abfd)->threadNameLength, amt,
380 amt = nlm_variable_header (abfd)->threadNameLength + 1;
381 if (bfd_bwrite ((PTR) nlm_variable_header (abfd)->threadName, amt,
387 /* Read and swap in the contents of all the auxiliary headers. Because of
388 the braindead design, we have to do strcmps on strings of indeterminate
389 length to figure out what each auxiliary header is. Even worse, we have
390 no way of knowing how many auxiliary headers there are or where the end
391 of the auxiliary headers are, except by finding something that doesn't
392 look like a known auxiliary header. This means that the first new type
393 of auxiliary header added will break all existing tools that don't
397 nlm_swap_auxiliary_headers_in (abfd)
406 position = bfd_tell (abfd);
407 amt = sizeof (tempstr);
408 if (bfd_bread ((PTR) tempstr, amt, abfd) != amt)
410 if (bfd_seek (abfd, position, SEEK_SET) != 0)
412 if (strncmp (tempstr, "VeRsIoN#", 8) == 0)
414 Nlm_External_Version_Header thdr;
417 if (bfd_bread ((PTR) &thdr, amt, abfd) != amt)
419 memcpy (nlm_version_header (abfd)->stamp, thdr.stamp,
420 sizeof (thdr.stamp));
421 nlm_version_header (abfd)->majorVersion =
422 get_word (abfd, (bfd_byte *) thdr.majorVersion);
423 nlm_version_header (abfd)->minorVersion =
424 get_word (abfd, (bfd_byte *) thdr.minorVersion);
425 nlm_version_header (abfd)->revision =
426 get_word (abfd, (bfd_byte *) thdr.revision);
427 nlm_version_header (abfd)->year =
428 get_word (abfd, (bfd_byte *) thdr.year);
429 nlm_version_header (abfd)->month =
430 get_word (abfd, (bfd_byte *) thdr.month);
431 nlm_version_header (abfd)->day =
432 get_word (abfd, (bfd_byte *) thdr.day);
434 else if (strncmp (tempstr, "MeSsAgEs", 8) == 0)
436 Nlm_External_Extended_Header thdr;
439 if (bfd_bread ((PTR) &thdr, amt, abfd) != amt)
441 memcpy (nlm_extended_header (abfd)->stamp, thdr.stamp,
442 sizeof (thdr.stamp));
443 nlm_extended_header (abfd)->languageID =
444 get_word (abfd, (bfd_byte *) thdr.languageID);
445 nlm_extended_header (abfd)->messageFileOffset =
446 get_word (abfd, (bfd_byte *) thdr.messageFileOffset);
447 nlm_extended_header (abfd)->messageFileLength =
448 get_word (abfd, (bfd_byte *) thdr.messageFileLength);
449 nlm_extended_header (abfd)->messageCount =
450 get_word (abfd, (bfd_byte *) thdr.messageCount);
451 nlm_extended_header (abfd)->helpFileOffset =
452 get_word (abfd, (bfd_byte *) thdr.helpFileOffset);
453 nlm_extended_header (abfd)->helpFileLength =
454 get_word (abfd, (bfd_byte *) thdr.helpFileLength);
455 nlm_extended_header (abfd)->RPCDataOffset =
456 get_word (abfd, (bfd_byte *) thdr.RPCDataOffset);
457 nlm_extended_header (abfd)->RPCDataLength =
458 get_word (abfd, (bfd_byte *) thdr.RPCDataLength);
459 nlm_extended_header (abfd)->sharedCodeOffset =
460 get_word (abfd, (bfd_byte *) thdr.sharedCodeOffset);
461 nlm_extended_header (abfd)->sharedCodeLength =
462 get_word (abfd, (bfd_byte *) thdr.sharedCodeLength);
463 nlm_extended_header (abfd)->sharedDataOffset =
464 get_word (abfd, (bfd_byte *) thdr.sharedDataOffset);
465 nlm_extended_header (abfd)->sharedDataLength =
466 get_word (abfd, (bfd_byte *) thdr.sharedDataLength);
467 nlm_extended_header (abfd)->sharedRelocationFixupOffset =
468 get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupOffset);
469 nlm_extended_header (abfd)->sharedRelocationFixupCount =
470 get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupCount);
471 nlm_extended_header (abfd)->sharedExternalReferenceOffset =
472 get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceOffset);
473 nlm_extended_header (abfd)->sharedExternalReferenceCount =
474 get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceCount);
475 nlm_extended_header (abfd)->sharedPublicsOffset =
476 get_word (abfd, (bfd_byte *) thdr.sharedPublicsOffset);
477 nlm_extended_header (abfd)->sharedPublicsCount =
478 get_word (abfd, (bfd_byte *) thdr.sharedPublicsCount);
479 nlm_extended_header (abfd)->sharedDebugRecordOffset =
480 get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordOffset);
481 nlm_extended_header (abfd)->sharedDebugRecordCount =
482 get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordCount);
483 nlm_extended_header (abfd)->SharedInitializationOffset =
484 get_word (abfd, (bfd_byte *) thdr.sharedInitializationOffset);
485 nlm_extended_header (abfd)->SharedExitProcedureOffset =
486 get_word (abfd, (bfd_byte *) thdr.SharedExitProcedureOffset);
487 nlm_extended_header (abfd)->productID =
488 get_word (abfd, (bfd_byte *) thdr.productID);
489 nlm_extended_header (abfd)->reserved0 =
490 get_word (abfd, (bfd_byte *) thdr.reserved0);
491 nlm_extended_header (abfd)->reserved1 =
492 get_word (abfd, (bfd_byte *) thdr.reserved1);
493 nlm_extended_header (abfd)->reserved2 =
494 get_word (abfd, (bfd_byte *) thdr.reserved2);
495 nlm_extended_header (abfd)->reserved3 =
496 get_word (abfd, (bfd_byte *) thdr.reserved3);
497 nlm_extended_header (abfd)->reserved4 =
498 get_word (abfd, (bfd_byte *) thdr.reserved4);
499 nlm_extended_header (abfd)->reserved5 =
500 get_word (abfd, (bfd_byte *) thdr.reserved5);
502 else if (strncmp (tempstr, "CoPyRiGhT=", 10) == 0)
504 amt = sizeof (nlm_copyright_header (abfd)->stamp);
505 if (bfd_bread ((PTR) nlm_copyright_header (abfd)->stamp,
508 if (bfd_bread ((PTR) &(nlm_copyright_header (abfd)
509 ->copyrightMessageLength),
510 (bfd_size_type) 1, abfd) != 1)
512 /* The copyright message is a variable length string. */
513 amt = nlm_copyright_header (abfd)->copyrightMessageLength + 1;
514 if (bfd_bread ((PTR) nlm_copyright_header (abfd)->copyrightMessage,
518 else if (strncmp (tempstr, "CuStHeAd", 8) == 0)
520 Nlm_External_Custom_Header thdr;
521 bfd_size_type hdrLength;
523 bfd_size_type dataLength;
527 /* Read the stamp ("CuStHeAd"). */
528 amt = sizeof (thdr.stamp);
529 if (bfd_bread ((PTR) thdr.stamp, amt, abfd) != amt)
531 /* Read the length of this custom header. */
532 amt = sizeof (thdr.length);
533 if (bfd_bread ((PTR) thdr.length, amt, abfd) != amt)
535 hdrLength = get_word (abfd, (bfd_byte *) thdr.length);
536 /* Read further fields if we have them. */
537 if (hdrLength < NLM_TARGET_LONG_SIZE)
541 amt = sizeof (thdr.dataOffset);
542 if (bfd_bread ((PTR) thdr.dataOffset, amt, abfd) != amt)
544 dataOffset = get_word (abfd, (bfd_byte *) thdr.dataOffset);
546 if (hdrLength < 2 * NLM_TARGET_LONG_SIZE)
550 amt = sizeof (thdr.dataLength);
551 if (bfd_bread ((PTR) thdr.dataLength, amt, abfd) != amt)
553 dataLength = get_word (abfd, (bfd_byte *) thdr.dataLength);
555 if (hdrLength < 2 * NLM_TARGET_LONG_SIZE + 8)
556 memset (dataStamp, 0, sizeof (dataStamp));
559 amt = sizeof (dataStamp);
560 if (bfd_bread ((PTR) dataStamp, amt, abfd) != amt)
564 /* Read the rest of the header, if any. */
565 if (hdrLength <= 2 * NLM_TARGET_LONG_SIZE + 8)
572 hdrLength -= 2 * NLM_TARGET_LONG_SIZE + 8;
573 hdr = bfd_alloc (abfd, hdrLength);
576 if (bfd_bread (hdr, hdrLength, abfd) != hdrLength)
580 /* If we have found a Cygnus header, process it. Otherwise,
581 just save the associated data without trying to interpret
583 if (strncmp (dataStamp, "CyGnUsEx", 8) == 0)
589 BFD_ASSERT (hdrLength == 0 && hdr == NULL);
591 pos = bfd_tell (abfd);
592 if (bfd_seek (abfd, dataOffset, SEEK_SET) != 0)
594 contents = (bfd_byte *) bfd_alloc (abfd, dataLength);
595 if (contents == NULL)
597 if (bfd_bread (contents, dataLength, abfd) != dataLength)
599 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
602 memcpy (nlm_cygnus_ext_header (abfd), "CyGnUsEx", 8);
603 nlm_cygnus_ext_header (abfd)->offset = dataOffset;
604 nlm_cygnus_ext_header (abfd)->length = dataLength;
606 /* This data this header points to provides a list of
607 the sections which were in the original object file
608 which was converted to become an NLM. We locate
609 those sections and add them to the BFD. Note that
610 this is likely to create a second .text, .data and
611 .bss section; retrieving the sections by name will
612 get the actual NLM sections, which is what we want to
613 happen. The sections from the original file, which
614 may be subsets of the NLM section, can only be found
615 using bfd_map_over_sections. */
617 pend = p + dataLength;
626 /* The format of this information is
627 null terminated section name
628 zeroes to adjust to 4 byte boundary
629 4 byte section data file pointer
634 l = strlen (name) + 1;
635 l = (l + 3) &~ (size_t) 3;
637 filepos = H_GET_32 (abfd, p);
639 size = H_GET_32 (abfd, p);
642 newsec = bfd_make_section_anyway (abfd, name);
643 if (newsec == (asection *) NULL)
645 newsec->_raw_size = size;
648 newsec->filepos = filepos;
649 newsec->flags |= SEC_HAS_CONTENTS;
655 memcpy (nlm_custom_header (abfd)->stamp, thdr.stamp,
656 sizeof (thdr.stamp));
657 nlm_custom_header (abfd)->hdrLength = hdrLength;
658 nlm_custom_header (abfd)->dataOffset = dataOffset;
659 nlm_custom_header (abfd)->dataLength = dataLength;
660 memcpy (nlm_custom_header (abfd)->dataStamp, dataStamp,
662 nlm_custom_header (abfd)->hdr = hdr;
673 /* Return whether there is a non-zero byte in a memory block. */
676 find_nonzero (buf, size)
680 char *p = (char *) buf;
688 /* Swap out the contents of the auxiliary headers. We create those
689 auxiliary headers which have been set non-zero. We do not require
690 the caller to set up the stamp fields. */
693 nlm_swap_auxiliary_headers_out (abfd)
698 /* Write out the version header if there is one. */
699 if (find_nonzero ((PTR) nlm_version_header (abfd),
700 sizeof (Nlm_Internal_Version_Header)))
702 Nlm_External_Version_Header thdr;
704 memcpy (thdr.stamp, "VeRsIoN#", 8);
705 put_word (abfd, (bfd_vma) nlm_version_header (abfd)->majorVersion,
706 (bfd_byte *) thdr.majorVersion);
707 put_word (abfd, (bfd_vma) nlm_version_header (abfd)->minorVersion,
708 (bfd_byte *) thdr.minorVersion);
709 put_word (abfd, (bfd_vma) nlm_version_header (abfd)->revision,
710 (bfd_byte *) thdr.revision);
711 put_word (abfd, (bfd_vma) nlm_version_header (abfd)->year,
712 (bfd_byte *) thdr.year);
713 put_word (abfd, (bfd_vma) nlm_version_header (abfd)->month,
714 (bfd_byte *) thdr.month);
715 put_word (abfd, (bfd_vma) nlm_version_header (abfd)->day,
716 (bfd_byte *) thdr.day);
717 if (bfd_bwrite ((PTR) &thdr, (bfd_size_type) sizeof (thdr), abfd)
722 /* Write out the extended header if there is one. */
723 if (find_nonzero ((PTR) nlm_extended_header (abfd),
724 sizeof (Nlm_Internal_Extended_Header)))
726 Nlm_External_Extended_Header thdr;
728 memcpy (thdr.stamp, "MeSsAgEs", 8);
730 (bfd_vma) nlm_extended_header (abfd)->languageID,
731 (bfd_byte *) thdr.languageID);
733 (bfd_vma) nlm_extended_header (abfd)->messageFileOffset,
734 (bfd_byte *) thdr.messageFileOffset);
736 (bfd_vma) nlm_extended_header (abfd)->messageFileLength,
737 (bfd_byte *) thdr.messageFileLength);
739 (bfd_vma) nlm_extended_header (abfd)->messageCount,
740 (bfd_byte *) thdr.messageCount);
742 (bfd_vma) nlm_extended_header (abfd)->helpFileOffset,
743 (bfd_byte *) thdr.helpFileOffset);
745 (bfd_vma) nlm_extended_header (abfd)->helpFileLength,
746 (bfd_byte *) thdr.helpFileLength);
748 (bfd_vma) nlm_extended_header (abfd)->RPCDataOffset,
749 (bfd_byte *) thdr.RPCDataOffset);
751 (bfd_vma) nlm_extended_header (abfd)->RPCDataLength,
752 (bfd_byte *) thdr.RPCDataLength);
754 (bfd_vma) nlm_extended_header (abfd)->sharedCodeOffset,
755 (bfd_byte *) thdr.sharedCodeOffset);
757 (bfd_vma) nlm_extended_header (abfd)->sharedCodeLength,
758 (bfd_byte *) thdr.sharedCodeLength);
760 (bfd_vma) nlm_extended_header (abfd)->sharedDataOffset,
761 (bfd_byte *) thdr.sharedDataOffset);
763 (bfd_vma) nlm_extended_header (abfd)->sharedDataLength,
764 (bfd_byte *) thdr.sharedDataLength);
766 (bfd_vma) nlm_extended_header (abfd)->sharedRelocationFixupOffset,
767 (bfd_byte *) thdr.sharedRelocationFixupOffset);
769 (bfd_vma) nlm_extended_header (abfd)->sharedRelocationFixupCount,
770 (bfd_byte *) thdr.sharedRelocationFixupCount);
772 (bfd_vma) nlm_extended_header (abfd)->sharedExternalReferenceOffset,
773 (bfd_byte *) thdr.sharedExternalReferenceOffset);
775 (bfd_vma) nlm_extended_header (abfd)->sharedExternalReferenceCount,
776 (bfd_byte *) thdr.sharedExternalReferenceCount);
778 (bfd_vma) nlm_extended_header (abfd)->sharedPublicsOffset,
779 (bfd_byte *) thdr.sharedPublicsOffset);
781 (bfd_vma) nlm_extended_header (abfd)->sharedPublicsCount,
782 (bfd_byte *) thdr.sharedPublicsCount);
784 (bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordOffset,
785 (bfd_byte *) thdr.sharedDebugRecordOffset);
787 (bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordCount,
788 (bfd_byte *) thdr.sharedDebugRecordCount);
790 (bfd_vma) nlm_extended_header (abfd)->SharedInitializationOffset,
791 (bfd_byte *) thdr.sharedInitializationOffset);
793 (bfd_vma) nlm_extended_header (abfd)->SharedExitProcedureOffset,
794 (bfd_byte *) thdr.SharedExitProcedureOffset);
796 (bfd_vma) nlm_extended_header (abfd)->productID,
797 (bfd_byte *) thdr.productID);
799 (bfd_vma) nlm_extended_header (abfd)->reserved0,
800 (bfd_byte *) thdr.reserved0);
802 (bfd_vma) nlm_extended_header (abfd)->reserved1,
803 (bfd_byte *) thdr.reserved1);
805 (bfd_vma) nlm_extended_header (abfd)->reserved2,
806 (bfd_byte *) thdr.reserved2);
808 (bfd_vma) nlm_extended_header (abfd)->reserved3,
809 (bfd_byte *) thdr.reserved3);
811 (bfd_vma) nlm_extended_header (abfd)->reserved4,
812 (bfd_byte *) thdr.reserved4);
814 (bfd_vma) nlm_extended_header (abfd)->reserved5,
815 (bfd_byte *) thdr.reserved5);
816 if (bfd_bwrite ((PTR) &thdr, (bfd_size_type) sizeof (thdr), abfd)
821 /* Write out the copyright header if there is one. */
822 if (find_nonzero ((PTR) nlm_copyright_header (abfd),
823 sizeof (Nlm_Internal_Copyright_Header)))
825 Nlm_External_Copyright_Header thdr;
827 memcpy (thdr.stamp, "CoPyRiGhT=", 10);
828 amt = sizeof (thdr.stamp);
829 if (bfd_bwrite ((PTR) thdr.stamp, amt, abfd) != amt)
831 thdr.copyrightMessageLength[0] =
832 nlm_copyright_header (abfd)->copyrightMessageLength;
834 if (bfd_bwrite ((PTR) thdr.copyrightMessageLength, amt, abfd) != amt)
836 /* The copyright message is a variable length string. */
837 amt = nlm_copyright_header (abfd)->copyrightMessageLength + 1;
838 if (bfd_bwrite ((PTR) nlm_copyright_header (abfd)->copyrightMessage,
843 /* Write out the custom header if there is one. */
844 if (find_nonzero ((PTR) nlm_custom_header (abfd),
845 sizeof (Nlm_Internal_Custom_Header)))
847 Nlm_External_Custom_Header thdr;
849 bfd_size_type hdrLength;
851 ds = find_nonzero ((PTR) nlm_custom_header (abfd)->dataStamp,
852 sizeof (nlm_custom_header (abfd)->dataStamp));
853 memcpy (thdr.stamp, "CuStHeAd", 8);
854 hdrLength = (2 * NLM_TARGET_LONG_SIZE + (ds ? 8 : 0)
855 + nlm_custom_header (abfd)->hdrLength);
856 put_word (abfd, hdrLength, thdr.length);
857 put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataOffset,
859 put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataLength,
863 BFD_ASSERT (nlm_custom_header (abfd)->hdrLength == 0);
864 amt = sizeof (thdr) - sizeof (thdr.dataStamp);
865 if (bfd_bwrite ((PTR) &thdr, amt, abfd) != amt)
870 memcpy (thdr.dataStamp, nlm_custom_header (abfd)->dataStamp,
871 sizeof (thdr.dataStamp));
873 if (bfd_bwrite ((PTR) &thdr, amt, abfd) != amt)
875 amt = nlm_custom_header (abfd)->hdrLength;
876 if (bfd_bwrite (nlm_custom_header (abfd)->hdr, amt, abfd) != amt)
881 /* Write out the Cygnus debugging header if there is one. */
882 if (find_nonzero ((PTR) nlm_cygnus_ext_header (abfd),
883 sizeof (Nlm_Internal_Cygnus_Ext_Header)))
885 Nlm_External_Custom_Header thdr;
887 memcpy (thdr.stamp, "CuStHeAd", 8);
888 put_word (abfd, (bfd_vma) 2 * NLM_TARGET_LONG_SIZE + 8,
889 (bfd_byte *) thdr.length);
890 put_word (abfd, (bfd_vma) nlm_cygnus_ext_header (abfd)->offset,
891 (bfd_byte *) thdr.dataOffset);
892 put_word (abfd, (bfd_vma) nlm_cygnus_ext_header (abfd)->length,
893 (bfd_byte *) thdr.dataLength);
894 memcpy (thdr.dataStamp, "CyGnUsEx", 8);
896 if (bfd_bwrite ((PTR) &thdr, amt, abfd) != amt)
903 /* We read the NLM's public symbols and use it to generate a bfd symbol
904 table (hey, it's better than nothing) on a one-for-one basis. Thus
905 use the number of public symbols as the number of bfd symbols we will
906 have once we actually get around to reading them in.
908 Return the number of bytes required to hold the symtab vector, based on
909 the count plus 1, since we will NULL terminate the vector allocated based
913 nlm_get_symtab_upper_bound (abfd)
916 Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */
918 long symtab_size = 0;
920 i_fxdhdrp = nlm_fixed_header (abfd);
921 symcount = (i_fxdhdrp->numberOfPublics
922 + i_fxdhdrp->numberOfDebugRecords
923 + i_fxdhdrp->numberOfExternalReferences);
924 symtab_size = (symcount + 1) * (sizeof (asymbol));
925 return (symtab_size);
928 /* Note that bfd_get_symcount is guaranteed to be zero if slurping the
929 symbol table fails. */
932 nlm_get_symtab (abfd, alocation)
936 nlm_symbol_type *symbase;
937 bfd_size_type counter = 0;
939 if (! nlm_slurp_symbol_table (abfd))
941 symbase = nlm_get_symbols (abfd);
942 while (counter < bfd_get_symcount (abfd))
944 *alocation++ = &symbase->symbol;
948 *alocation = (asymbol *) NULL;
949 return bfd_get_symcount (abfd);
952 /* Make an NLM symbol. There is nothing special to do here. */
955 nlm_make_empty_symbol (abfd)
958 bfd_size_type amt = sizeof (nlm_symbol_type);
959 nlm_symbol_type *new = (nlm_symbol_type *) bfd_zalloc (abfd, amt);
962 new->symbol.the_bfd = abfd;
966 /* Get symbol information. */
969 nlm_get_symbol_info (ignore_abfd, symbol, ret)
970 bfd *ignore_abfd ATTRIBUTE_UNUSED;
974 bfd_symbol_info (symbol, ret);
977 /* Print symbol information. */
980 nlm_print_symbol (abfd, afile, symbol, how)
984 bfd_print_symbol_type how;
986 FILE *file = (FILE *) afile;
990 case bfd_print_symbol_name:
991 case bfd_print_symbol_more:
993 fprintf (file, "%s", symbol->name);
995 case bfd_print_symbol_all:
996 bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
997 fprintf (file, " %-5s", symbol->section->name);
999 fprintf (file, " %s", symbol->name);
1004 /* Slurp in nlm symbol table.
1006 In the external (in-file) form, NLM export records are variable length,
1007 with the following form:
1009 1 byte length of the symbol name (N)
1010 N bytes the symbol name
1011 4 bytes the symbol offset from start of it's section
1013 We also read in the debugging symbols and import records. Import
1014 records are treated as undefined symbols. As we read the import
1015 records we also read in the associated reloc information, which is
1016 attached to the symbol.
1018 The bfd symbols are copied to SYMPTRS.
1020 When we return, the bfd symcount is either zero or contains the correct
1025 nlm_slurp_symbol_table (abfd)
1028 Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */
1029 bfd_size_type totsymcount; /* Number of NLM symbols */
1030 bfd_size_type symcount; /* Counter of NLM symbols */
1031 nlm_symbol_type *sym; /* Pointer to current bfd symbol */
1032 unsigned char symlength; /* Symbol length read into here */
1033 unsigned char symtype; /* Type of debugging symbol */
1034 bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Symbol offsets read into here */
1035 boolean (*read_import_func) PARAMS ((bfd *, nlm_symbol_type *));
1036 boolean (*set_public_section_func) PARAMS ((bfd *, nlm_symbol_type *));
1039 if (nlm_get_symbols (abfd) != NULL)
1042 /* Read each raw NLM symbol, using the information to create a canonical bfd
1045 Note that we allocate the initial bfd canonical symbol buffer based on a
1046 one-to-one mapping of the NLM symbols to canonical symbols. We actually
1047 use all the NLM symbols, so there will be no space left over at the end.
1048 When we have all the symbols, we build the caller's pointer vector. */
1051 i_fxdhdrp = nlm_fixed_header (abfd);
1052 totsymcount = (i_fxdhdrp->numberOfPublics
1053 + i_fxdhdrp->numberOfDebugRecords
1054 + i_fxdhdrp->numberOfExternalReferences);
1055 if (totsymcount == 0)
1060 if (bfd_seek (abfd, i_fxdhdrp->publicsOffset, SEEK_SET) != 0)
1063 amt = totsymcount * sizeof (nlm_symbol_type);
1064 sym = ((nlm_symbol_type *) bfd_zalloc (abfd, amt));
1067 nlm_set_symbols (abfd, sym);
1069 /* We use the bfd's symcount directly as the control count, so that early
1070 termination of the loop leaves the symcount correct for the symbols that
1073 set_public_section_func = nlm_set_public_section_func (abfd);
1074 symcount = i_fxdhdrp->numberOfPublics;
1075 while (abfd->symcount < symcount)
1077 amt = sizeof (symlength);
1078 if (bfd_bread ((PTR) &symlength, amt, abfd) != amt)
1081 sym->symbol.the_bfd = abfd;
1082 sym->symbol.name = bfd_alloc (abfd, amt + 1);
1083 if (!sym->symbol.name)
1085 if (bfd_bread ((PTR) sym->symbol.name, amt, abfd) != amt)
1087 /* Cast away const. */
1088 ((char *) (sym->symbol.name))[symlength] = '\0';
1089 amt = sizeof (temp);
1090 if (bfd_bread ((PTR) temp, amt, abfd) != amt)
1092 sym->symbol.flags = BSF_GLOBAL | BSF_EXPORT;
1093 sym->symbol.value = get_word (abfd, temp);
1094 if (set_public_section_func)
1096 /* Most backends can use the code below, but unfortunately
1097 some use a different scheme. */
1098 if (! (*set_public_section_func) (abfd, sym))
1103 if (sym->symbol.value & NLM_HIBIT)
1105 sym->symbol.value &= ~NLM_HIBIT;
1106 sym->symbol.flags |= BSF_FUNCTION;
1107 sym->symbol.section =
1108 bfd_get_section_by_name (abfd, NLM_CODE_NAME);
1112 sym->symbol.section =
1113 bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
1121 /* Read the debugging records. */
1123 if (i_fxdhdrp->numberOfDebugRecords > 0)
1125 if (bfd_seek (abfd, i_fxdhdrp->debugInfoOffset, SEEK_SET) != 0)
1128 symcount += i_fxdhdrp->numberOfDebugRecords;
1129 while (abfd->symcount < symcount)
1131 amt = sizeof (symtype);
1132 if (bfd_bread ((PTR) &symtype, amt, abfd) != amt)
1134 amt = sizeof (temp);
1135 if (bfd_bread ((PTR) temp, amt, abfd) != amt)
1137 amt = sizeof (symlength);
1138 if (bfd_bread ((PTR) &symlength, amt, abfd) != amt)
1141 sym->symbol.the_bfd = abfd;
1142 sym->symbol.name = bfd_alloc (abfd, amt + 1);
1143 if (!sym->symbol.name)
1145 if (bfd_bread ((PTR) sym->symbol.name, amt, abfd) != amt)
1147 /* Cast away const. */
1148 ((char *) (sym->symbol.name))[symlength] = '\0';
1149 sym->symbol.flags = BSF_LOCAL;
1150 sym->symbol.value = get_word (abfd, temp);
1153 sym->symbol.section =
1154 bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
1156 else if (symtype == 1)
1158 sym->symbol.flags |= BSF_FUNCTION;
1159 sym->symbol.section =
1160 bfd_get_section_by_name (abfd, NLM_CODE_NAME);
1164 sym->symbol.section = bfd_abs_section_ptr;
1172 /* Read in the import records. We can only do this if we know how
1173 to read relocs for this target. */
1175 read_import_func = nlm_read_import_func (abfd);
1176 if (read_import_func != NULL)
1178 if (bfd_seek (abfd, i_fxdhdrp->externalReferencesOffset, SEEK_SET) != 0)
1181 symcount += i_fxdhdrp->numberOfExternalReferences;
1182 while (abfd->symcount < symcount)
1184 if (! (*read_import_func) (abfd, sym))
1194 /* Get the relocs for an NLM file. There are two types of relocs.
1195 Imports are relocs against symbols defined in other NLM files. We
1196 treat these as relocs against global symbols. Relocation fixups
1197 are internal relocs.
1199 The actual format used to store the relocs is machine specific. */
1201 /* Read in the relocation fixup information. This is stored in
1202 nlm_relocation_fixups, an array of arelent structures, and
1203 nlm_relocation_fixup_secs, an array of section pointers. The
1204 section pointers are needed because the relocs are not sorted by
1208 nlm_slurp_reloc_fixups (abfd)
1211 boolean (*read_func) PARAMS ((bfd *, nlm_symbol_type *, asection **,
1213 bfd_size_type count, amt;
1217 if (nlm_relocation_fixups (abfd) != NULL)
1219 read_func = nlm_read_reloc_func (abfd);
1220 if (read_func == NULL)
1223 if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset,
1227 count = nlm_fixed_header (abfd)->numberOfRelocationFixups;
1228 amt = count * sizeof (arelent);
1229 rels = (arelent *) bfd_alloc (abfd, amt);
1230 amt = count * sizeof (asection *);
1231 secs = (asection **) bfd_alloc (abfd, amt);
1232 if ((rels == NULL || secs == NULL) && count != 0)
1234 nlm_relocation_fixups (abfd) = rels;
1235 nlm_relocation_fixup_secs (abfd) = secs;
1237 /* We have to read piece by piece, because we don't know how large
1238 the machine specific reloc information is. */
1239 while (count-- != 0)
1241 if (! (*read_func) (abfd, (nlm_symbol_type *) NULL, secs, rels))
1243 nlm_relocation_fixups (abfd) = NULL;
1244 nlm_relocation_fixup_secs (abfd) = NULL;
1254 /* Get the number of relocs. This really just returns an upper bound,
1255 since it does not attempt to distinguish them based on the section.
1256 That will be handled when they are actually read. */
1259 nlm_get_reloc_upper_bound (abfd, sec)
1263 nlm_symbol_type *syms;
1264 bfd_size_type count;
1267 /* If we don't know how to read relocs, just return 0. */
1268 if (nlm_read_reloc_func (abfd) == NULL)
1270 /* Make sure we have either the code or the data section. */
1271 if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0)
1274 syms = nlm_get_symbols (abfd);
1277 if (! nlm_slurp_symbol_table (abfd))
1279 syms = nlm_get_symbols (abfd);
1282 ret = nlm_fixed_header (abfd)->numberOfRelocationFixups;
1284 count = bfd_get_symcount (abfd);
1285 while (count-- != 0)
1291 return (ret + 1) * sizeof (arelent *);
1294 /* Get the relocs themselves. */
1297 nlm_canonicalize_reloc (abfd, sec, relptr, symbols)
1305 bfd_size_type count, i;
1308 /* Get the relocation fixups. */
1309 rels = nlm_relocation_fixups (abfd);
1312 if (! nlm_slurp_reloc_fixups (abfd))
1314 rels = nlm_relocation_fixups (abfd);
1316 secs = nlm_relocation_fixup_secs (abfd);
1319 count = nlm_fixed_header (abfd)->numberOfRelocationFixups;
1320 for (i = 0; i < count; i++, rels++, secs++)
1329 /* Get the import symbols. */
1330 count = bfd_get_symcount (abfd);
1331 for (i = 0; i < count; i++, symbols++)
1336 if (bfd_asymbol_flavour (sym) == bfd_target_nlm_flavour)
1338 nlm_symbol_type *nlm_sym;
1341 nlm_sym = (nlm_symbol_type *) sym;
1342 for (j = 0; j < nlm_sym->rcnt; j++)
1344 if (nlm_sym->relocs[j].section == sec)
1346 *relptr = &nlm_sym->relocs[j].reloc;
1347 (*relptr)->sym_ptr_ptr = symbols;
1360 /* Compute the section file positions for an NLM file. All variable
1361 length data in the file headers must be set before this function is
1362 called. If the variable length data is changed later, the
1363 resulting object file will be incorrect. Unfortunately, there is
1364 no way to check this.
1366 This routine also sets the Size and Offset fields in the fixed
1369 It also looks over the symbols and moves any common symbols into
1370 the .bss section; NLM has no way to represent a common symbol.
1371 This approach means that either the symbols must already have been
1372 set at this point, or there must be no common symbols. We need to
1373 move the symbols at this point so that mangle_relocs can see the
1377 nlm_compute_section_file_positions (abfd)
1382 bfd_vma text, data, bss;
1383 bfd_vma text_low, data_low;
1384 unsigned int text_align, data_align, other_align;
1385 file_ptr text_ptr, data_ptr, other_ptr;
1387 asymbol **sym_ptr_ptr;
1389 if (abfd->output_has_begun)
1392 /* Make sure we have a section to hold uninitialized data. */
1393 bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
1394 if (bss_sec == NULL)
1396 if (!add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME,
1397 (file_ptr) 0, (bfd_size_type) 0,
1400 bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
1403 abfd->output_has_begun = true;
1405 /* The fixed header. */
1406 sofar = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd);
1408 /* The variable header. */
1409 sofar += (sizeof (nlm_variable_header (abfd)->descriptionLength)
1410 + nlm_variable_header (abfd)->descriptionLength + 1
1411 + NLM_TARGET_LONG_SIZE /* stackSize */
1412 + NLM_TARGET_LONG_SIZE /* reserved */
1413 + sizeof (nlm_variable_header (abfd)->oldThreadName)
1414 + sizeof (nlm_variable_header (abfd)->screenNameLength)
1415 + nlm_variable_header (abfd)->screenNameLength + 1
1416 + sizeof (nlm_variable_header (abfd)->threadNameLength)
1417 + nlm_variable_header (abfd)->threadNameLength + 1);
1419 /* The auxiliary headers. */
1420 if (find_nonzero ((PTR) nlm_version_header (abfd),
1421 sizeof (Nlm_Internal_Version_Header)))
1422 sofar += sizeof (Nlm_External_Version_Header);
1423 if (find_nonzero ((PTR) nlm_extended_header (abfd),
1424 sizeof (Nlm_Internal_Extended_Header)))
1425 sofar += sizeof (Nlm_External_Extended_Header);
1426 if (find_nonzero ((PTR) nlm_copyright_header (abfd),
1427 sizeof (Nlm_Internal_Copyright_Header)))
1428 sofar += (sizeof (Nlm_External_Copyright_Header)
1429 + nlm_copyright_header (abfd)->copyrightMessageLength + 1);
1430 if (find_nonzero ((PTR) nlm_custom_header (abfd),
1431 sizeof (Nlm_Internal_Custom_Header)))
1432 sofar += (sizeof (Nlm_External_Custom_Header)
1433 + nlm_custom_header (abfd)->hdrLength);
1434 if (find_nonzero ((PTR) nlm_cygnus_ext_header (abfd),
1435 sizeof (Nlm_Internal_Cygnus_Ext_Header)))
1436 sofar += sizeof (Nlm_External_Custom_Header);
1438 /* Compute the section file positions in two passes. First get the
1439 sizes of the text and data sections, and then set the file
1440 positions. This code aligns the sections in the file using the
1441 same alignment restrictions that apply to the sections in memory;
1442 this may not be necessary. */
1444 text_low = (bfd_vma) - 1;
1447 data_low = (bfd_vma) - 1;
1451 for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
1455 sec->_raw_size = BFD_ALIGN (sec->_raw_size, 1 << sec->alignment_power);
1457 f = bfd_get_section_flags (abfd, sec);
1460 text += sec->_raw_size;
1461 if (bfd_get_section_vma (abfd, sec) < text_low)
1462 text_low = bfd_get_section_vma (abfd, sec);
1463 if (sec->alignment_power > text_align)
1464 text_align = sec->alignment_power;
1466 else if (f & SEC_DATA)
1468 data += sec->_raw_size;
1469 if (bfd_get_section_vma (abfd, sec) < data_low)
1470 data_low = bfd_get_section_vma (abfd, sec);
1471 if (sec->alignment_power > data_align)
1472 data_align = sec->alignment_power;
1474 else if (f & SEC_HAS_CONTENTS)
1476 if (sec->alignment_power > other_align)
1477 other_align = sec->alignment_power;
1479 else if (f & SEC_ALLOC)
1480 bss += sec->_raw_size;
1483 nlm_set_text_low (abfd, text_low);
1484 nlm_set_data_low (abfd, data_low);
1486 if (nlm_no_uninitialized_data (abfd))
1488 /* This NetWare format does not use uninitialized data. We must
1489 increase the size of the data section. We will never wind up
1490 writing those file locations, so they will remain zero. */
1495 text_ptr = BFD_ALIGN (sofar, 1 << text_align);
1496 data_ptr = BFD_ALIGN (text_ptr + text, 1 << data_align);
1497 other_ptr = BFD_ALIGN (data_ptr + data, 1 << other_align);
1499 /* Fill in some fields in the header for which we now have the
1501 nlm_fixed_header (abfd)->codeImageOffset = text_ptr;
1502 nlm_fixed_header (abfd)->codeImageSize = text;
1503 nlm_fixed_header (abfd)->dataImageOffset = data_ptr;
1504 nlm_fixed_header (abfd)->dataImageSize = data;
1505 nlm_fixed_header (abfd)->uninitializedDataSize = bss;
1507 for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
1511 f = bfd_get_section_flags (abfd, sec);
1515 sec->filepos = text_ptr;
1516 text_ptr += sec->_raw_size;
1518 else if (f & SEC_DATA)
1520 sec->filepos = data_ptr;
1521 data_ptr += sec->_raw_size;
1523 else if (f & SEC_HAS_CONTENTS)
1525 sec->filepos = other_ptr;
1526 other_ptr += sec->_raw_size;
1530 nlm_fixed_header (abfd)->relocationFixupOffset = other_ptr;
1532 /* Move all common symbols into the .bss section. */
1534 sym_ptr_ptr = bfd_get_outsymbols (abfd);
1535 if (sym_ptr_ptr != NULL)
1540 sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
1542 for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
1549 if (!bfd_is_com_section (bfd_get_section (sym)))
1552 /* Put the common symbol in the .bss section, and increase
1553 the size of the .bss section by the size of the common
1554 symbol (which is the old value of the symbol). */
1555 sym->section = bss_sec;
1557 sym->value = bss_sec->_raw_size + add;
1559 add = BFD_ALIGN (add, 1 << bss_sec->alignment_power);
1563 if (nlm_no_uninitialized_data (abfd))
1565 /* We could handle this case, but so far it hasn't been
1569 nlm_fixed_header (abfd)->uninitializedDataSize += add;
1570 bss_sec->_raw_size += add;
1577 /* Set the contents of a section. To do this we need to know where
1578 the section is going to be located in the output file. That means
1579 that the sizes of all the sections must be set, and all the
1580 variable size header information must be known. */
1583 nlm_set_section_contents (abfd, section, location, offset, count)
1588 bfd_size_type count;
1590 if (! abfd->output_has_begun
1591 && ! nlm_compute_section_file_positions (abfd))
1597 /* i386 NetWare has a very restricted set of relocs. In order for
1598 objcopy to work, the NLM i386 backend needs a chance to rework
1599 the section contents so that its set of relocs will work. If all
1600 the relocs are already acceptable, this will not do anything. */
1601 if (section->reloc_count != 0)
1603 boolean (*mangle_relocs_func) PARAMS ((bfd *, asection *, PTR,
1604 bfd_vma, bfd_size_type));
1606 mangle_relocs_func = nlm_mangle_relocs_func (abfd);
1607 if (mangle_relocs_func != NULL)
1609 if (!(*mangle_relocs_func) (abfd, section, location,
1610 (bfd_vma) offset, count))
1615 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1616 || bfd_bwrite (location, count, abfd) != count)
1622 /* We need to sort a list of relocs associated with sections when we
1623 write out the external relocs. */
1626 nlm_external_reloc_compare (p1, p2)
1630 const struct reloc_and_sec *r1 = (const struct reloc_and_sec *) p1;
1631 const struct reloc_and_sec *r2 = (const struct reloc_and_sec *) p2;
1634 cmp = strcmp ((*r1->rel->sym_ptr_ptr)->name,
1635 (*r2->rel->sym_ptr_ptr)->name);
1639 /* We sort by address within symbol to make the sort more stable and
1640 increase the chances that different hosts will generate bit for
1641 bit equivalent results. */
1642 return (int) (r1->rel->address - r2->rel->address);
1645 /* Write out an NLM file. We write out the information in this order:
1651 other sections (custom data, messages, help, shared NLM, RPC,
1652 module dependencies)
1654 external references (imports)
1655 public symbols (exports)
1657 This is similar to the order used by the NetWare tools; the
1658 difference is that NetWare puts the sections other than code, data
1659 and custom data at the end of the NLM. It is convenient for us to
1660 know where the sections are going to be before worrying about the
1661 size of the other information.
1663 By the time this function is called, all the section data should
1664 have been output using set_section_contents. Note that custom
1665 data, the message file, the help file, the shared NLM file, the RPC
1666 data, and the module dependencies are all considered to be
1667 sections; the caller is responsible for filling in the offset and
1668 length fields in the NLM headers. The relocation fixups and
1669 imports are both obtained from the list of relocs attached to each
1670 section. The exports and debugging records are obtained from the
1671 list of outsymbols. */
1674 nlm_write_object_contents (abfd)
1678 boolean (*write_import_func) PARAMS ((bfd *, asection *, arelent *));
1679 bfd_size_type external_reloc_count, internal_reloc_count, i, c;
1680 struct reloc_and_sec *external_relocs;
1681 asymbol **sym_ptr_ptr;
1683 boolean (*write_prefix_func) PARAMS ((bfd *));
1684 unsigned char *fixed_header = NULL;
1688 fixed_header = ((unsigned char *)
1689 bfd_malloc (nlm_fixed_header_size (abfd)));
1690 if (fixed_header == NULL)
1693 if (! abfd->output_has_begun
1694 && ! nlm_compute_section_file_positions (abfd))
1697 /* Write out the variable length headers. */
1698 pos = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd);
1699 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
1701 if (! nlm_swap_variable_header_out (abfd)
1702 || ! nlm_swap_auxiliary_headers_out (abfd))
1704 bfd_set_error (bfd_error_system_call);
1708 /* A weak check on whether the section file positions were
1710 if (bfd_tell (abfd) > (ufile_ptr) nlm_fixed_header (abfd)->codeImageOffset)
1712 bfd_set_error (bfd_error_invalid_operation);
1716 /* Advance to the relocs. */
1717 if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset,
1721 /* The format of the relocation entries is dependent upon the
1722 particular target. We use an external routine to write the reloc
1724 write_import_func = nlm_write_import_func (abfd);
1726 /* Write out the internal relocation fixups. While we're looping
1727 over the relocs, we also count the external relocs, which is
1728 needed when they are written out below. */
1729 internal_reloc_count = 0;
1730 external_reloc_count = 0;
1731 for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
1733 arelent **rel_ptr_ptr, **rel_end;
1735 if (sec->reloc_count == 0)
1738 /* We can only represent relocs within a code or data
1739 section. We ignore them for a debugging section. */
1740 if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0)
1743 /* We need to know how to write out imports */
1744 if (write_import_func == NULL)
1746 bfd_set_error (bfd_error_invalid_operation);
1750 rel_ptr_ptr = sec->orelocation;
1751 rel_end = rel_ptr_ptr + sec->reloc_count;
1752 for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++)
1758 sym = *rel->sym_ptr_ptr;
1760 if (! bfd_is_und_section (bfd_get_section (sym)))
1762 ++internal_reloc_count;
1763 if (! (*write_import_func) (abfd, sec, rel))
1767 ++external_reloc_count;
1770 nlm_fixed_header (abfd)->numberOfRelocationFixups = internal_reloc_count;
1772 /* Write out the imports (relocs against external symbols). These
1773 are output as a symbol name followed by all the relocs for that
1774 symbol, so we must first gather together all the relocs against
1775 external symbols and sort them. */
1776 amt = external_reloc_count * sizeof (struct reloc_and_sec);
1777 external_relocs = (struct reloc_and_sec *) bfd_alloc (abfd, amt);
1778 if (external_relocs == (struct reloc_and_sec *) NULL)
1781 for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
1783 arelent **rel_ptr_ptr, **rel_end;
1785 if (sec->reloc_count == 0)
1788 rel_ptr_ptr = sec->orelocation;
1789 rel_end = rel_ptr_ptr + sec->reloc_count;
1790 for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++)
1796 sym = *rel->sym_ptr_ptr;
1798 if (! bfd_is_und_section (bfd_get_section (sym)))
1801 external_relocs[i].rel = rel;
1802 external_relocs[i].sec = sec;
1807 BFD_ASSERT (i == external_reloc_count);
1809 /* Sort the external relocs by name. */
1810 qsort ((PTR) external_relocs, (size_t) external_reloc_count,
1811 sizeof (struct reloc_and_sec), nlm_external_reloc_compare);
1813 /* Write out the external relocs. */
1814 nlm_fixed_header (abfd)->externalReferencesOffset = bfd_tell (abfd);
1817 while (i < external_reloc_count)
1821 bfd_size_type j, cnt;
1825 rel = external_relocs[i].rel;
1826 sym = *rel->sym_ptr_ptr;
1830 (j < external_reloc_count
1831 && *external_relocs[j].rel->sym_ptr_ptr == sym);
1835 if (! (*nlm_write_external_func (abfd)) (abfd, cnt, sym,
1836 &external_relocs[i]))
1842 nlm_fixed_header (abfd)->numberOfExternalReferences = c;
1844 /* Write out the public symbols (exports). */
1845 sym_ptr_ptr = bfd_get_outsymbols (abfd);
1846 if (sym_ptr_ptr != (asymbol **) NULL)
1848 bfd_vma (*get_public_offset_func) PARAMS ((bfd *, asymbol *));
1849 boolean (*write_export_func) PARAMS ((bfd *, asymbol *, bfd_vma));
1853 nlm_fixed_header (abfd)->publicsOffset = bfd_tell (abfd);
1854 get_public_offset_func = nlm_get_public_offset_func (abfd);
1855 write_export_func = nlm_write_export_func (abfd);
1857 sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
1858 for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
1863 bfd_byte temp[NLM_TARGET_LONG_SIZE];
1867 if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) == 0
1868 || bfd_is_und_section (bfd_get_section (sym)))
1873 if (get_public_offset_func)
1875 /* Most backends can use the code below, but
1876 unfortunately some use a different scheme. */
1877 offset = (*get_public_offset_func) (abfd, sym);
1881 offset = bfd_asymbol_value (sym);
1883 if (sec->flags & SEC_CODE)
1885 offset -= nlm_get_text_low (abfd);
1886 offset |= NLM_HIBIT;
1888 else if (sec->flags & (SEC_DATA | SEC_ALLOC))
1890 /* SEC_ALLOC is for the .bss section. */
1891 offset -= nlm_get_data_low (abfd);
1895 /* We can't handle an exported symbol that is not in
1896 the code or data segment. */
1897 bfd_set_error (bfd_error_invalid_operation);
1902 if (write_export_func)
1904 if (! (*write_export_func) (abfd, sym, offset))
1909 len = strlen (sym->name);
1910 if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd)
1911 != sizeof (bfd_byte))
1912 || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
1915 put_word (abfd, offset, temp);
1916 if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd)
1921 nlm_fixed_header (abfd)->numberOfPublics = c;
1923 /* Write out the debugging records. The NLM conversion program
1924 wants to be able to inhibit this, so as a special hack if
1925 debugInfoOffset is set to -1 we don't write any debugging
1926 information. This can not be handled by fiddling with the
1927 symbol table, because exported symbols appear in both the
1928 exported symbol list and the debugging information. */
1929 if (nlm_fixed_header (abfd)->debugInfoOffset == (file_ptr) - 1)
1931 nlm_fixed_header (abfd)->debugInfoOffset = 0;
1932 nlm_fixed_header (abfd)->numberOfDebugRecords = 0;
1936 nlm_fixed_header (abfd)->debugInfoOffset = bfd_tell (abfd);
1938 sym_ptr_ptr = bfd_get_outsymbols (abfd);
1939 sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
1940 for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
1945 bfd_byte temp[NLM_TARGET_LONG_SIZE];
1949 /* The NLM notion of a debugging symbol is actually what
1950 BFD calls a local or global symbol. What BFD calls a
1951 debugging symbol NLM does not understand at all. */
1952 if ((sym->flags & (BSF_LOCAL | BSF_GLOBAL | BSF_EXPORT)) == 0
1953 || (sym->flags & BSF_DEBUGGING) != 0
1954 || bfd_is_und_section (bfd_get_section (sym)))
1959 offset = bfd_asymbol_value (sym);
1961 if (sec->flags & SEC_CODE)
1963 offset -= nlm_get_text_low (abfd);
1966 else if (sec->flags & (SEC_DATA | SEC_ALLOC))
1968 /* SEC_ALLOC is for the .bss section. */
1969 offset -= nlm_get_data_low (abfd);
1975 /* The type is 0 for data, 1 for code, 2 for absolute. */
1976 if (bfd_bwrite (&type, (bfd_size_type) sizeof (bfd_byte), abfd)
1977 != sizeof (bfd_byte))
1980 put_word (abfd, offset, temp);
1981 if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd)
1985 len = strlen (sym->name);
1986 if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd)
1987 != sizeof (bfd_byte))
1988 || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
1991 nlm_fixed_header (abfd)->numberOfDebugRecords = c;
1995 /* NLMLINK fills in offset values even if there is no data, so we do
1997 last = bfd_tell (abfd);
1998 if (nlm_fixed_header (abfd)->codeImageOffset == 0)
1999 nlm_fixed_header (abfd)->codeImageOffset = last;
2000 if (nlm_fixed_header (abfd)->dataImageOffset == 0)
2001 nlm_fixed_header (abfd)->dataImageOffset = last;
2002 if (nlm_fixed_header (abfd)->customDataOffset == 0)
2003 nlm_fixed_header (abfd)->customDataOffset = last;
2004 if (nlm_fixed_header (abfd)->moduleDependencyOffset == 0)
2005 nlm_fixed_header (abfd)->moduleDependencyOffset = last;
2006 if (nlm_fixed_header (abfd)->relocationFixupOffset == 0)
2007 nlm_fixed_header (abfd)->relocationFixupOffset = last;
2008 if (nlm_fixed_header (abfd)->externalReferencesOffset == 0)
2009 nlm_fixed_header (abfd)->externalReferencesOffset = last;
2010 if (nlm_fixed_header (abfd)->publicsOffset == 0)
2011 nlm_fixed_header (abfd)->publicsOffset = last;
2012 if (nlm_fixed_header (abfd)->debugInfoOffset == 0)
2013 nlm_fixed_header (abfd)->debugInfoOffset = last;
2015 /* At this point everything has been written out except the fixed
2017 memcpy (nlm_fixed_header (abfd)->signature, nlm_signature (abfd),
2018 NLM_SIGNATURE_SIZE);
2019 nlm_fixed_header (abfd)->version = NLM_HEADER_VERSION;
2020 nlm_fixed_header (abfd)->codeStartOffset =
2021 (bfd_get_start_address (abfd)
2022 - nlm_get_text_low (abfd));
2024 /* We have no convenient way for the caller to pass in the exit
2025 procedure or the check unload procedure, so the caller must set
2026 the values in the header to the values of the symbols. */
2027 nlm_fixed_header (abfd)->exitProcedureOffset -= nlm_get_text_low (abfd);
2028 if (nlm_fixed_header (abfd)->checkUnloadProcedureOffset != 0)
2029 nlm_fixed_header (abfd)->checkUnloadProcedureOffset -=
2030 nlm_get_text_low (abfd);
2032 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
2035 write_prefix_func = nlm_write_prefix_func (abfd);
2036 if (write_prefix_func)
2038 if (! (*write_prefix_func) (abfd))
2042 BFD_ASSERT ((bfd_size_type) bfd_tell (abfd)
2043 == nlm_optional_prefix_size (abfd));
2045 nlm_swap_fixed_header_out (abfd, nlm_fixed_header (abfd), fixed_header);
2046 if (bfd_bwrite (fixed_header, nlm_fixed_header_size (abfd), abfd)
2047 != nlm_fixed_header_size (abfd))
2050 if (fixed_header != NULL)
2051 free (fixed_header);
2055 if (fixed_header != NULL)
2056 free (fixed_header);