1 /* nlmconv.c -- NLM conversion program
2 Copyright (C) 1993-2015 Free Software Foundation, Inc.
4 This file is part of GNU Binutils.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
22 /* Written by Ian Lance Taylor <ian@cygnus.com>.
24 This program can be used to convert any appropriate object file
25 into a NetWare Loadable Module (an NLM). It will accept a linker
26 specification file which is identical to that accepted by the
27 NetWare linker, NLMLINK. */
29 /* AIX requires this to be the first thing in the file. */
38 #include "libiberty.h"
39 #include "filenames.h"
40 #include "safe-ctype.h"
47 /* Internal BFD NLM header. */
53 #include "coff/ecoff.h"
58 /* If strerror is just a macro, we want to use the one from libiberty
59 since it will handle undefined values. */
61 extern char *strerror (int);
73 /* Global variables. */
75 /* The name used to invoke the program. */
78 /* Local variables. */
80 /* Whether to print out debugging information (currently just controls
81 whether it prints the linker command if there is one). */
84 /* The symbol table. */
85 static asymbol **symbols;
87 /* A section we create in the output file to hold pointers to where
88 the sections of the input file end up. We will put a pointer to
89 this section in the NLM header. These is an entry for each input
90 section. The format is
91 null terminated section name
92 zeroes to adjust to 4 byte boundary
93 4 byte section data file pointer
95 We don't need a version number. The way we find this information
96 is by finding a stamp in the NLM header information. If we need to
97 change the format of this information, we can simply change the
99 static asection *secsec;
101 /* A temporary file name to be unlinked on exit. Actually, for most
102 errors, we leave it around. It's not clear whether that is helpful
104 static char *unlink_on_exit;
106 /* The list of long options. */
107 static struct option long_options[] =
109 { "debug", no_argument, 0, 'd' },
110 { "header-file", required_argument, 0, 'T' },
111 { "help", no_argument, 0, 'h' },
112 { "input-target", required_argument, 0, 'I' },
113 { "input-format", required_argument, 0, 'I' }, /* Obsolete */
114 { "linker", required_argument, 0, 'l' },
115 { "output-target", required_argument, 0, 'O' },
116 { "output-format", required_argument, 0, 'O' }, /* Obsolete */
117 { "version", no_argument, 0, 'V' },
118 { NULL, no_argument, 0, 0 }
121 /* Local routines. */
123 int main (int, char **);
125 static void show_usage (FILE *, int);
126 static const char *select_output_format
127 (enum bfd_architecture, unsigned long, bfd_boolean);
128 static void setup_sections (bfd *, asection *, void *);
129 static void copy_sections (bfd *, asection *, void *);
130 static void mangle_relocs
131 (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
132 static void default_mangle_relocs
133 (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
134 static char *link_inputs (struct string_list *, char *, char *);
137 static void i386_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
141 static void alpha_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
144 #ifdef NLMCONV_POWERPC
145 static void powerpc_build_stubs (bfd *, bfd *, asymbol ***, long *);
146 static void powerpc_resolve_stubs (bfd *, bfd *);
147 static void powerpc_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
150 /* The main routine. */
153 main (int argc, char **argv)
156 char *input_file = NULL;
157 const char *input_format = NULL;
158 const char *output_format = NULL;
159 const char *header_file = NULL;
161 Nlm_Internal_Fixed_Header fixed_hdr_struct;
162 Nlm_Internal_Variable_Header var_hdr_struct;
163 Nlm_Internal_Version_Header version_hdr_struct;
164 Nlm_Internal_Copyright_Header copyright_hdr_struct;
165 Nlm_Internal_Extended_Header extended_hdr_struct;
168 asymbol **newsyms, **outsyms;
169 long symcount, newsymalloc, newsymcount;
171 asection *text_sec, *bss_sec, *data_sec;
176 char inlead, outlead;
177 bfd_boolean gotstart, gotexit, gotcheck;
179 FILE *custom_data = NULL;
180 FILE *help_data = NULL;
181 FILE *message_data = NULL;
182 FILE *rpc_data = NULL;
183 FILE *shared_data = NULL;
184 size_t custom_size = 0;
185 size_t help_size = 0;
186 size_t message_size = 0;
187 size_t module_size = 0;
189 asection *custom_section = NULL;
190 asection *help_section = NULL;
191 asection *message_section = NULL;
192 asection *module_section = NULL;
193 asection *rpc_section = NULL;
194 asection *shared_section = NULL;
196 size_t shared_offset = 0;
197 size_t shared_size = 0;
198 static Nlm_Internal_Fixed_Header sharedhdr;
203 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
204 setlocale (LC_MESSAGES, "");
206 #if defined (HAVE_SETLOCALE)
207 setlocale (LC_CTYPE, "");
209 bindtextdomain (PACKAGE, LOCALEDIR);
210 textdomain (PACKAGE);
212 program_name = argv[0];
213 xmalloc_set_program_name (program_name);
214 bfd_set_error_program_name (program_name);
216 expandargv (&argc, &argv);
219 set_default_bfd_target ();
221 while ((opt = getopt_long (argc, argv, "dHhI:l:O:T:Vv", long_options,
232 show_usage (stdout, 0);
235 input_format = optarg;
241 output_format = optarg;
244 header_file = optarg;
248 print_version ("nlmconv");
253 show_usage (stderr, 1);
258 /* The input and output files may be named on the command line. */
262 input_file = argv[optind];
266 output_file = argv[optind];
269 show_usage (stderr, 1);
270 if (filename_cmp (input_file, output_file) == 0)
272 fatal (_("input and output files must be different"));
277 /* Initialize the header information to default values. */
278 fixed_hdr = &fixed_hdr_struct;
279 memset ((void *) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct);
280 var_hdr = &var_hdr_struct;
281 memset ((void *) &var_hdr_struct, 0, sizeof var_hdr_struct);
282 version_hdr = &version_hdr_struct;
283 memset ((void *) &version_hdr_struct, 0, sizeof version_hdr_struct);
284 copyright_hdr = ©right_hdr_struct;
285 memset ((void *) ©right_hdr_struct, 0, sizeof copyright_hdr_struct);
286 extended_hdr = &extended_hdr_struct;
287 memset ((void *) &extended_hdr_struct, 0, sizeof extended_hdr_struct);
288 check_procedure = NULL;
291 exit_procedure = "_Stop";
292 export_symbols = NULL;
296 import_symbols = NULL;
299 sharelib_file = NULL;
300 start_procedure = "_Prelude";
306 /* Parse the header file (if there is one). */
307 if (header_file != NULL)
309 if (! nlmlex_file (header_file)
311 || parse_errors != 0)
315 if (input_files != NULL)
317 if (input_file != NULL)
319 fatal (_("input file named both on command line and with INPUT"));
321 if (input_files->next == NULL)
322 input_file = input_files->string;
324 input_file = link_inputs (input_files, ld_arg, map_file);
326 else if (input_file == NULL)
328 non_fatal (_("no input file"));
329 show_usage (stderr, 1);
332 inbfd = bfd_openr (input_file, input_format);
334 bfd_fatal (input_file);
336 if (! bfd_check_format_matches (inbfd, bfd_object, &matching))
338 bfd_nonfatal (input_file);
339 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
341 list_matching_formats (matching);
347 if (output_format == NULL)
348 output_format = select_output_format (bfd_get_arch (inbfd),
349 bfd_get_mach (inbfd),
350 bfd_big_endian (inbfd));
352 assert (output_format != NULL);
354 /* Use the output file named on the command line if it exists.
355 Otherwise use the file named in the OUTPUT statement. */
356 if (output_file == NULL)
358 non_fatal (_("no name for output file"));
359 show_usage (stderr, 1);
362 outbfd = bfd_openw (output_file, output_format);
364 bfd_fatal (output_file);
365 if (! bfd_set_format (outbfd, bfd_object))
366 bfd_fatal (output_file);
368 assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour);
370 /* XXX: Should we accept the unknown bfd format here ? */
371 if (bfd_arch_get_compatible (inbfd, outbfd, TRUE) == NULL)
372 non_fatal (_("warning: input and output formats are not compatible"));
374 /* Move the values read from the command file into outbfd. */
375 *nlm_fixed_header (outbfd) = fixed_hdr_struct;
376 *nlm_variable_header (outbfd) = var_hdr_struct;
377 *nlm_version_header (outbfd) = version_hdr_struct;
378 *nlm_copyright_header (outbfd) = copyright_hdr_struct;
379 *nlm_extended_header (outbfd) = extended_hdr_struct;
381 /* Start copying the input BFD to the output BFD. */
382 if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd)))
383 bfd_fatal (bfd_get_filename (outbfd));
385 symsize = bfd_get_symtab_upper_bound (inbfd);
387 bfd_fatal (input_file);
388 symbols = (asymbol **) xmalloc (symsize);
389 symcount = bfd_canonicalize_symtab (inbfd, symbols);
391 bfd_fatal (input_file);
393 /* Make sure we have a .bss section. */
394 bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME);
397 bss_sec = bfd_make_section_with_flags (outbfd,
398 NLM_UNINITIALIZED_DATA_NAME,
401 || ! bfd_set_section_alignment (outbfd, bss_sec, 1))
402 bfd_fatal (_("make .bss section"));
405 /* We store the original section names in the .nlmsections section,
406 so that programs which understand it can resurrect the original
407 sections from the NLM. We will put a pointer to .nlmsections in
408 the NLM header area. */
409 secsec = bfd_make_section_with_flags (outbfd, ".nlmsections",
412 bfd_fatal (_("make .nlmsections section"));
414 #ifdef NLMCONV_POWERPC
415 /* For PowerPC NetWare we need to build stubs for calls to undefined
416 symbols. Because each stub requires an entry in the TOC section
417 which must be at the same location as other entries in the TOC
418 section, we must do this before determining where the TOC section
419 goes in setup_sections. */
420 if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
421 powerpc_build_stubs (inbfd, outbfd, &symbols, &symcount);
424 /* Set up the sections. */
425 bfd_map_over_sections (inbfd, setup_sections, (void *) outbfd);
427 text_sec = bfd_get_section_by_name (outbfd, NLM_CODE_NAME);
429 /* The .bss section immediately follows the .data section. */
430 data_sec = bfd_get_section_by_name (outbfd, NLM_INITIALIZED_DATA_NAME);
431 if (data_sec != NULL)
435 vma = bfd_get_section_size (data_sec);
436 align = 1 << bss_sec->alignment_power;
437 add = ((vma + align - 1) &~ (align - 1)) - vma;
439 if (! bfd_set_section_vma (outbfd, bss_sec, vma))
440 bfd_fatal (_("set .bss vma"));
443 bfd_size_type data_size;
445 data_size = bfd_get_section_size (data_sec);
446 if (! bfd_set_section_size (outbfd, data_sec, data_size + add))
447 bfd_fatal (_("set .data size"));
451 /* Adjust symbol information. */
452 inlead = bfd_get_symbol_leading_char (inbfd);
453 outlead = bfd_get_symbol_leading_char (outbfd);
458 newsyms = (asymbol **) xmalloc (newsymalloc * sizeof (asymbol *));
461 for (i = 0; i < symcount; i++)
467 /* Add or remove a leading underscore. */
468 if (inlead != outlead)
472 if (bfd_asymbol_name (sym)[0] == inlead)
480 new_name = xmalloc (strlen (bfd_asymbol_name (sym)) + 1);
481 new_name[0] = outlead;
482 strcpy (new_name + 1, bfd_asymbol_name (sym) + 1);
483 sym->name = new_name;
491 new_name = xmalloc (strlen (bfd_asymbol_name (sym)) + 2);
492 new_name[0] = outlead;
493 strcpy (new_name + 1, bfd_asymbol_name (sym));
494 sym->name = new_name;
498 /* NLM's have an uninitialized data section, but they do not
499 have a common section in the Unix sense. Move all common
500 symbols into the .bss section, and mark them as exported. */
501 if (bfd_is_com_section (bfd_get_section (sym)))
503 bfd_vma size = sym->value;
505 sym->section = bss_sec;
506 sym->value = bfd_get_section_size (bss_sec);
508 align = 1 << bss_sec->alignment_power;
509 size = (size + align - 1) & ~(align - 1);
510 bfd_set_section_size (outbfd, bss_sec, size);
511 sym->flags |= BSF_EXPORT | BSF_GLOBAL;
513 else if (bfd_get_section (sym)->output_section != NULL)
515 /* Move the symbol into the output section. */
516 sym->value += bfd_get_section (sym)->output_offset;
517 sym->section = bfd_get_section (sym)->output_section;
518 /* This is no longer a section symbol. */
519 sym->flags &=~ BSF_SECTION_SYM;
522 /* Force _edata and _end to be defined. This would normally be
523 done by the linker, but the manipulation of the common
524 symbols will confuse it. */
525 if ((sym->flags & BSF_DEBUGGING) == 0
526 && bfd_asymbol_name (sym)[0] == '_'
527 && bfd_is_und_section (bfd_get_section (sym)))
529 if (strcmp (bfd_asymbol_name (sym), "_edata") == 0)
531 sym->section = bss_sec;
534 if (strcmp (bfd_asymbol_name (sym), "_end") == 0)
536 sym->section = bss_sec;
540 #ifdef NLMCONV_POWERPC
541 /* For PowerPC NetWare, we define __GOT0. This is the start
542 of the .got section. */
543 if (bfd_get_arch (inbfd) == bfd_arch_powerpc
544 && strcmp (bfd_asymbol_name (sym), "__GOT0") == 0)
548 got_sec = bfd_get_section_by_name (inbfd, ".got");
549 assert (got_sec != (asection *) NULL);
550 sym->value = got_sec->output_offset;
551 sym->section = got_sec->output_section;
556 /* If this is a global symbol, check the export list. */
557 if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0)
559 struct string_list *l;
562 /* Unfortunately, a symbol can appear multiple times on the
563 export list, with and without prefixes. */
565 for (l = export_symbols; l != NULL; l = l->next)
567 if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
573 zbase = strchr (l->string, '@');
575 && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
577 /* We must add a symbol with this prefix. */
578 if (newsymcount >= newsymalloc)
581 newsyms = ((asymbol **)
582 xrealloc ((void *) newsyms,
584 * sizeof (asymbol *))));
586 newsyms[newsymcount] =
587 (asymbol *) xmalloc (sizeof (asymbol));
588 *newsyms[newsymcount] = *sym;
589 newsyms[newsymcount]->name = l->string;
596 /* The unmodified symbol is actually not exported at
598 sym->flags &=~ (BSF_GLOBAL | BSF_EXPORT);
599 sym->flags |= BSF_LOCAL;
603 /* If it's an undefined symbol, see if it's on the import list.
604 Change the prefix if necessary. */
605 if (bfd_is_und_section (bfd_get_section (sym)))
607 struct string_list *l;
609 for (l = import_symbols; l != NULL; l = l->next)
611 if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
617 zbase = strchr (l->string, '@');
619 && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
621 sym->name = l->string;
627 non_fatal (_("warning: symbol %s imported but not in import list"),
628 bfd_asymbol_name (sym));
631 /* See if it's one of the special named symbols. */
632 if ((sym->flags & BSF_DEBUGGING) == 0)
636 /* FIXME: If these symbols are not in the .text section, we
637 add the .text section size to the value. This may not be
638 correct for all targets. I'm not sure how this should
639 really be handled. */
640 if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0)
642 val = bfd_asymbol_value (sym);
643 if (bfd_get_section (sym) == data_sec
644 && text_sec != (asection *) NULL)
645 val += bfd_section_size (outbfd, text_sec);
646 if (! bfd_set_start_address (outbfd, val))
647 bfd_fatal (_("set start address"));
650 if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0)
652 val = bfd_asymbol_value (sym);
653 if (bfd_get_section (sym) == data_sec
654 && text_sec != (asection *) NULL)
655 val += bfd_section_size (outbfd, text_sec);
656 nlm_fixed_header (outbfd)->exitProcedureOffset = val;
659 if (check_procedure != NULL
660 && strcmp (bfd_asymbol_name (sym), check_procedure) == 0)
662 val = bfd_asymbol_value (sym);
663 if (bfd_get_section (sym) == data_sec
664 && text_sec != (asection *) NULL)
665 val += bfd_section_size (outbfd, text_sec);
666 nlm_fixed_header (outbfd)->checkUnloadProcedureOffset = val;
674 endsym->value = bfd_get_section_size (bss_sec);
676 /* FIXME: If any relocs referring to _end use inplace addends,
677 then I think they need to be updated. This is handled by
678 i386_mangle_relocs. Is it needed for any other object
682 if (newsymcount == 0)
686 outsyms = (asymbol **) xmalloc ((symcount + newsymcount + 1)
687 * sizeof (asymbol *));
688 memcpy (outsyms, symbols, symcount * sizeof (asymbol *));
689 memcpy (outsyms + symcount, newsyms, newsymcount * sizeof (asymbol *));
690 outsyms[symcount + newsymcount] = NULL;
693 bfd_set_symtab (outbfd, outsyms, symcount + newsymcount);
696 non_fatal (_("warning: START procedure %s not defined"), start_procedure);
698 non_fatal (_("warning: EXIT procedure %s not defined"), exit_procedure);
699 if (check_procedure != NULL && ! gotcheck)
700 non_fatal (_("warning: CHECK procedure %s not defined"), check_procedure);
702 /* Add additional sections required for the header information. */
703 if (custom_file != NULL)
705 custom_data = fopen (custom_file, "r");
706 if (custom_data == NULL
707 || fstat (fileno (custom_data), &st) < 0)
709 fprintf (stderr, "%s:%s: %s\n", program_name, custom_file,
715 custom_size = st.st_size;
716 custom_section = bfd_make_section_with_flags (outbfd, ".nlmcustom",
718 if (custom_section == NULL
719 || ! bfd_set_section_size (outbfd, custom_section, custom_size))
720 bfd_fatal (_("custom section"));
723 if (help_file != NULL)
725 help_data = fopen (help_file, "r");
726 if (help_data == NULL
727 || fstat (fileno (help_data), &st) < 0)
729 fprintf (stderr, "%s:%s: %s\n", program_name, help_file,
735 help_size = st.st_size;
736 help_section = bfd_make_section_with_flags (outbfd, ".nlmhelp",
738 if (help_section == NULL
739 || ! bfd_set_section_size (outbfd, help_section, help_size))
740 bfd_fatal (_("help section"));
741 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
744 if (message_file != NULL)
746 message_data = fopen (message_file, "r");
747 if (message_data == NULL
748 || fstat (fileno (message_data), &st) < 0)
750 fprintf (stderr, "%s:%s: %s\n", program_name, message_file,
756 message_size = st.st_size;
757 message_section = bfd_make_section_with_flags (outbfd,
760 if (message_section == NULL
761 || ! bfd_set_section_size (outbfd, message_section, message_size))
762 bfd_fatal (_("message section"));
763 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
768 struct string_list *l;
771 for (l = modules; l != NULL; l = l->next)
772 module_size += strlen (l->string) + 1;
773 module_section = bfd_make_section_with_flags (outbfd, ".nlmmodules",
775 if (module_section == NULL
776 || ! bfd_set_section_size (outbfd, module_section, module_size))
777 bfd_fatal (_("module section"));
779 if (rpc_file != NULL)
781 rpc_data = fopen (rpc_file, "r");
783 || fstat (fileno (rpc_data), &st) < 0)
785 fprintf (stderr, "%s:%s: %s\n", program_name, rpc_file,
791 rpc_size = st.st_size;
792 rpc_section = bfd_make_section_with_flags (outbfd, ".nlmrpc",
794 if (rpc_section == NULL
795 || ! bfd_set_section_size (outbfd, rpc_section, rpc_size))
796 bfd_fatal (_("rpc section"));
797 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
800 if (sharelib_file != NULL)
802 sharedbfd = bfd_openr (sharelib_file, output_format);
803 if (sharedbfd == NULL
804 || ! bfd_check_format (sharedbfd, bfd_object))
806 fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
807 bfd_errmsg (bfd_get_error ()));
808 sharelib_file = NULL;
812 sharedhdr = *nlm_fixed_header (sharedbfd);
813 bfd_close (sharedbfd);
814 shared_data = fopen (sharelib_file, "r");
815 if (shared_data == NULL
816 || (fstat (fileno (shared_data), &st) < 0))
818 fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
820 sharelib_file = NULL;
824 /* If we were clever, we could just copy out the
825 sections of the shared library which we actually
826 need. However, we would have to figure out the sizes
827 of the external and public information, and that can
828 not be done without reading through them. */
829 if (sharedhdr.uninitializedDataSize > 0)
831 /* There is no place to record this information. */
832 non_fatal (_("%s: warning: shared libraries can not have uninitialized data"),
835 shared_offset = st.st_size;
836 if (shared_offset > (size_t) sharedhdr.codeImageOffset)
837 shared_offset = sharedhdr.codeImageOffset;
838 if (shared_offset > (size_t) sharedhdr.dataImageOffset)
839 shared_offset = sharedhdr.dataImageOffset;
840 if (shared_offset > (size_t) sharedhdr.relocationFixupOffset)
841 shared_offset = sharedhdr.relocationFixupOffset;
842 if (shared_offset > (size_t) sharedhdr.externalReferencesOffset)
843 shared_offset = sharedhdr.externalReferencesOffset;
844 if (shared_offset > (size_t) sharedhdr.publicsOffset)
845 shared_offset = sharedhdr.publicsOffset;
846 shared_size = st.st_size - shared_offset;
847 shared_section = bfd_make_section_with_flags (outbfd,
850 if (shared_section == NULL
851 || ! bfd_set_section_size (outbfd, shared_section,
853 bfd_fatal (_("shared section"));
854 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
859 /* Check whether a version was given. */
860 if (!CONST_STRNEQ (version_hdr->stamp, "VeRsIoN#"))
861 non_fatal (_("warning: No version number given"));
863 /* At least for now, always create an extended header, because that
864 is what NLMLINK does. */
865 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
867 LITMEMCPY (nlm_cygnus_ext_header (outbfd)->stamp, "CyGnUsEx");
869 /* If the date was not given, force it in. */
870 if (nlm_version_header (outbfd)->month == 0
871 && nlm_version_header (outbfd)->day == 0
872 && nlm_version_header (outbfd)->year == 0)
878 ptm = localtime (&now);
879 nlm_version_header (outbfd)->month = ptm->tm_mon + 1;
880 nlm_version_header (outbfd)->day = ptm->tm_mday;
881 nlm_version_header (outbfd)->year = ptm->tm_year + 1900;
882 LITMEMCPY (version_hdr->stamp, "VeRsIoN#");
885 #ifdef NLMCONV_POWERPC
886 /* Resolve the stubs we build for PowerPC NetWare. */
887 if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
888 powerpc_resolve_stubs (inbfd, outbfd);
891 /* Copy over the sections. */
892 bfd_map_over_sections (inbfd, copy_sections, (void *) outbfd);
894 /* Finish up the header information. */
895 if (custom_file != NULL)
899 data = xmalloc (custom_size);
900 if (fread (data, 1, custom_size, custom_data) != custom_size)
901 non_fatal (_("%s: read: %s"), custom_file, strerror (errno));
904 if (! bfd_set_section_contents (outbfd, custom_section, data,
905 (file_ptr) 0, custom_size))
906 bfd_fatal (_("custom section"));
907 nlm_fixed_header (outbfd)->customDataOffset =
908 custom_section->filepos;
909 nlm_fixed_header (outbfd)->customDataSize = custom_size;
915 /* As a special hack, the backend recognizes a debugInfoOffset
916 of -1 to mean that it should not output any debugging
917 information. This can not be handling by fiddling with the
918 symbol table because exported symbols appear in both the
919 export information and the debugging information. */
920 nlm_fixed_header (outbfd)->debugInfoOffset = (file_ptr) -1;
923 non_fatal (_("warning: FULLMAP is not supported; try ld -M"));
924 if (help_file != NULL)
928 data = xmalloc (help_size);
929 if (fread (data, 1, help_size, help_data) != help_size)
930 non_fatal (_("%s: read: %s"), help_file, strerror (errno));
933 if (! bfd_set_section_contents (outbfd, help_section, data,
934 (file_ptr) 0, help_size))
935 bfd_fatal (_("help section"));
936 nlm_extended_header (outbfd)->helpFileOffset =
937 help_section->filepos;
938 nlm_extended_header (outbfd)->helpFileLength = help_size;
942 if (message_file != NULL)
946 data = xmalloc (message_size);
947 if (fread (data, 1, message_size, message_data) != message_size)
948 non_fatal (_("%s: read: %s"), message_file, strerror (errno));
951 if (! bfd_set_section_contents (outbfd, message_section, data,
952 (file_ptr) 0, message_size))
953 bfd_fatal (_("message section"));
954 nlm_extended_header (outbfd)->messageFileOffset =
955 message_section->filepos;
956 nlm_extended_header (outbfd)->messageFileLength = message_size;
958 /* FIXME: Are these offsets correct on all platforms? Are
959 they 32 bits on all platforms? What endianness? */
960 nlm_extended_header (outbfd)->languageID =
961 bfd_h_get_32 (outbfd, (bfd_byte *) data + 106);
962 nlm_extended_header (outbfd)->messageCount =
963 bfd_h_get_32 (outbfd, (bfd_byte *) data + 110);
971 struct string_list *l;
974 data = xmalloc (module_size);
976 set = (unsigned char *) data;
977 for (l = modules; l != NULL; l = l->next)
979 *set = strlen (l->string);
980 strncpy ((char *) set + 1, l->string, *set);
984 if (! bfd_set_section_contents (outbfd, module_section, data,
985 (file_ptr) 0, module_size))
986 bfd_fatal (_("module section"));
987 nlm_fixed_header (outbfd)->moduleDependencyOffset =
988 module_section->filepos;
989 nlm_fixed_header (outbfd)->numberOfModuleDependencies = c;
991 if (rpc_file != NULL)
995 data = xmalloc (rpc_size);
996 if (fread (data, 1, rpc_size, rpc_data) != rpc_size)
997 non_fatal (_("%s: read: %s"), rpc_file, strerror (errno));
1000 if (! bfd_set_section_contents (outbfd, rpc_section, data,
1001 (file_ptr) 0, rpc_size))
1002 bfd_fatal (_("rpc section"));
1003 nlm_extended_header (outbfd)->RPCDataOffset =
1004 rpc_section->filepos;
1005 nlm_extended_header (outbfd)->RPCDataLength = rpc_size;
1009 if (sharelib_file != NULL)
1013 data = xmalloc (shared_size);
1014 if (fseek (shared_data, shared_offset, SEEK_SET) != 0
1015 || fread (data, 1, shared_size, shared_data) != shared_size)
1016 non_fatal (_("%s: read: %s"), sharelib_file, strerror (errno));
1019 if (! bfd_set_section_contents (outbfd, shared_section, data,
1020 (file_ptr) 0, shared_size))
1021 bfd_fatal (_("shared section"));
1023 nlm_extended_header (outbfd)->sharedCodeOffset =
1024 sharedhdr.codeImageOffset - shared_offset + shared_section->filepos;
1025 nlm_extended_header (outbfd)->sharedCodeLength =
1026 sharedhdr.codeImageSize;
1027 nlm_extended_header (outbfd)->sharedDataOffset =
1028 sharedhdr.dataImageOffset - shared_offset + shared_section->filepos;
1029 nlm_extended_header (outbfd)->sharedDataLength =
1030 sharedhdr.dataImageSize;
1031 nlm_extended_header (outbfd)->sharedRelocationFixupOffset =
1032 (sharedhdr.relocationFixupOffset
1034 + shared_section->filepos);
1035 nlm_extended_header (outbfd)->sharedRelocationFixupCount =
1036 sharedhdr.numberOfRelocationFixups;
1037 nlm_extended_header (outbfd)->sharedExternalReferenceOffset =
1038 (sharedhdr.externalReferencesOffset
1040 + shared_section->filepos);
1041 nlm_extended_header (outbfd)->sharedExternalReferenceCount =
1042 sharedhdr.numberOfExternalReferences;
1043 nlm_extended_header (outbfd)->sharedPublicsOffset =
1044 sharedhdr.publicsOffset - shared_offset + shared_section->filepos;
1045 nlm_extended_header (outbfd)->sharedPublicsCount =
1046 sharedhdr.numberOfPublics;
1047 nlm_extended_header (outbfd)->sharedDebugRecordOffset =
1048 sharedhdr.debugInfoOffset - shared_offset + shared_section->filepos;
1049 nlm_extended_header (outbfd)->sharedDebugRecordCount =
1050 sharedhdr.numberOfDebugRecords;
1051 nlm_extended_header (outbfd)->SharedInitializationOffset =
1052 sharedhdr.codeStartOffset;
1053 nlm_extended_header (outbfd)->SharedExitProcedureOffset =
1054 sharedhdr.exitProcedureOffset;
1059 const int max_len = NLM_MODULE_NAME_SIZE - 2;
1060 const char * filename = lbasename (output_file);
1062 len = strlen (filename);
1065 nlm_fixed_header (outbfd)->moduleName[0] = len;
1067 strncpy (nlm_fixed_header (outbfd)->moduleName + 1, filename, max_len);
1068 nlm_fixed_header (outbfd)->moduleName[max_len + 1] = '\0';
1070 for (modname = nlm_fixed_header (outbfd)->moduleName;
1073 *modname = TOUPPER (*modname);
1076 strncpy (nlm_variable_header (outbfd)->oldThreadName, " LONG",
1077 NLM_OLD_THREAD_NAME_LENGTH);
1079 nlm_cygnus_ext_header (outbfd)->offset = secsec->filepos;
1080 nlm_cygnus_ext_header (outbfd)->length = bfd_section_size (outbfd, secsec);
1082 if (! bfd_close (outbfd))
1083 bfd_fatal (output_file);
1084 if (! bfd_close (inbfd))
1085 bfd_fatal (input_file);
1087 if (unlink_on_exit != NULL)
1088 unlink (unlink_on_exit);
1094 /* Show a usage message and exit. */
1097 show_usage (FILE *file, int status)
1099 fprintf (file, _("Usage: %s [option(s)] [in-file [out-file]]\n"), program_name);
1100 fprintf (file, _(" Convert an object file into a NetWare Loadable Module\n"));
1101 fprintf (file, _(" The options are:\n\
1102 -I --input-target=<bfdname> Set the input binary file format\n\
1103 -O --output-target=<bfdname> Set the output binary file format\n\
1104 -T --header-file=<file> Read <file> for NLM header information\n\
1105 -l --linker=<linker> Use <linker> for any linking\n\
1106 -d --debug Display on stderr the linker command line\n\
1107 @<file> Read options from <file>.\n\
1108 -h --help Display this information\n\
1109 -v --version Display the program's version\n\
1111 if (REPORT_BUGS_TO[0] && status == 0)
1112 fprintf (file, _("Report bugs to %s\n"), REPORT_BUGS_TO);
1116 /* Select the output format based on the input architecture, machine,
1117 and endianness. This chooses the appropriate NLM target. */
1120 select_output_format (enum bfd_architecture arch, unsigned long mach,
1121 bfd_boolean bigendian ATTRIBUTE_UNUSED)
1127 return "nlm32-i386";
1129 #ifdef NLMCONV_SPARC
1130 case bfd_arch_sparc:
1131 return "nlm32-sparc";
1133 #ifdef NLMCONV_ALPHA
1134 case bfd_arch_alpha:
1135 return "nlm32-alpha";
1137 #ifdef NLMCONV_POWERPC
1138 case bfd_arch_powerpc:
1139 return "nlm32-powerpc";
1142 fatal (_("support not compiled in for %s"),
1143 bfd_printable_arch_mach (arch, mach));
1148 /* The BFD sections are copied in two passes. This function selects
1149 the output section for each input section, and sets up the section
1153 setup_sections (bfd *inbfd ATTRIBUTE_UNUSED, asection *insec, void *data_ptr)
1155 bfd *outbfd = (bfd *) data_ptr;
1157 const char *outname;
1160 bfd_size_type align;
1162 bfd_size_type secsecsize;
1164 f = bfd_get_section_flags (inbfd, insec);
1166 outname = NLM_CODE_NAME;
1167 else if ((f & SEC_LOAD) && (f & SEC_HAS_CONTENTS))
1168 outname = NLM_INITIALIZED_DATA_NAME;
1169 else if (f & SEC_ALLOC)
1170 outname = NLM_UNINITIALIZED_DATA_NAME;
1172 outname = bfd_section_name (inbfd, insec);
1174 outsec = bfd_get_section_by_name (outbfd, outname);
1177 outsec = bfd_make_section (outbfd, outname);
1179 bfd_fatal (_("make section"));
1182 insec->output_section = outsec;
1184 offset = bfd_section_size (outbfd, outsec);
1185 align = 1 << bfd_section_alignment (inbfd, insec);
1186 add = ((offset + align - 1) &~ (align - 1)) - offset;
1187 insec->output_offset = offset + add;
1189 if (! bfd_set_section_size (outbfd, outsec,
1190 (bfd_section_size (outbfd, outsec)
1191 + bfd_section_size (inbfd, insec)
1193 bfd_fatal (_("set section size"));
1195 if ((bfd_section_alignment (inbfd, insec)
1196 > bfd_section_alignment (outbfd, outsec))
1197 && ! bfd_set_section_alignment (outbfd, outsec,
1198 bfd_section_alignment (inbfd, insec)))
1199 bfd_fatal (_("set section alignment"));
1201 if (! bfd_set_section_flags (outbfd, outsec,
1202 f | bfd_get_section_flags (outbfd, outsec)))
1203 bfd_fatal (_("set section flags"));
1205 bfd_set_reloc (outbfd, outsec, (arelent **) NULL, 0);
1207 /* For each input section we allocate space for an entry in
1209 secsecsize = bfd_section_size (outbfd, secsec);
1210 secsecsize += strlen (bfd_section_name (inbfd, insec)) + 1;
1211 secsecsize = (secsecsize + 3) &~ 3;
1213 if (! bfd_set_section_size (outbfd, secsec, secsecsize))
1214 bfd_fatal (_("set .nlmsections size"));
1217 /* Copy the section contents. */
1220 copy_sections (bfd *inbfd, asection *insec, void *data_ptr)
1222 static bfd_size_type secsecoff = 0;
1223 bfd *outbfd = (bfd *) data_ptr;
1232 inname = bfd_section_name (inbfd, insec);
1234 outsec = insec->output_section;
1235 assert (outsec != NULL);
1237 size = bfd_get_section_size (insec);
1239 if ((bfd_get_section_flags (inbfd, insec) & SEC_HAS_CONTENTS) == 0)
1243 contents = xmalloc (size);
1244 if (! bfd_get_section_contents (inbfd, insec, contents,
1245 (file_ptr) 0, size))
1246 bfd_fatal (bfd_get_filename (inbfd));
1249 reloc_size = bfd_get_reloc_upper_bound (inbfd, insec);
1251 bfd_fatal (bfd_get_filename (inbfd));
1252 if (reloc_size != 0)
1257 relocs = (arelent **) xmalloc (reloc_size);
1258 reloc_count = bfd_canonicalize_reloc (inbfd, insec, relocs, symbols);
1259 if (reloc_count < 0)
1260 bfd_fatal (bfd_get_filename (inbfd));
1261 mangle_relocs (outbfd, insec, &relocs, &reloc_count, (char *) contents,
1264 /* FIXME: refers to internal BFD fields. */
1265 if (outsec->orelocation != (arelent **) NULL)
1267 bfd_size_type total_count;
1270 total_count = reloc_count + outsec->reloc_count;
1271 combined = (arelent **) xmalloc (total_count * sizeof (arelent *));
1272 memcpy (combined, outsec->orelocation,
1273 outsec->reloc_count * sizeof (arelent *));
1274 memcpy (combined + outsec->reloc_count, relocs,
1275 (size_t) (reloc_count * sizeof (arelent *)));
1276 free (outsec->orelocation);
1277 reloc_count = total_count;
1281 bfd_set_reloc (outbfd, outsec, relocs, reloc_count);
1284 if (contents != NULL)
1286 if (! bfd_set_section_contents (outbfd, outsec, contents,
1287 insec->output_offset, size))
1288 bfd_fatal (bfd_get_filename (outbfd));
1292 /* Add this section to .nlmsections. */
1293 if (! bfd_set_section_contents (outbfd, secsec, (void *) inname, secsecoff,
1294 strlen (inname) + 1))
1295 bfd_fatal (_("set .nlmsection contents"));
1296 secsecoff += strlen (inname) + 1;
1298 add = ((secsecoff + 3) &~ 3) - secsecoff;
1301 bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
1302 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, add))
1303 bfd_fatal (_("set .nlmsection contents"));
1307 if (contents != NULL)
1308 bfd_h_put_32 (outbfd, (bfd_vma) outsec->filepos, buf);
1310 bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
1311 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
1312 bfd_fatal (_("set .nlmsection contents"));
1315 bfd_h_put_32 (outbfd, (bfd_vma) size, buf);
1316 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
1317 bfd_fatal (_("set .nlmsection contents"));
1321 /* Some, perhaps all, NetWare targets require changing the relocs used
1322 by the input formats. */
1325 mangle_relocs (bfd *outbfd, asection *insec, arelent ***relocs_ptr,
1326 long *reloc_count_ptr, char *contents,
1327 bfd_size_type contents_size)
1329 switch (bfd_get_arch (outbfd))
1333 i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1334 contents, contents_size);
1337 #ifdef NLMCONV_ALPHA
1338 case bfd_arch_alpha:
1339 alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1340 contents, contents_size);
1343 #ifdef NLMCONV_POWERPC
1344 case bfd_arch_powerpc:
1345 powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1346 contents, contents_size);
1350 default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1351 contents, contents_size);
1356 /* By default all we need to do for relocs is change the address by
1357 the output_offset. */
1360 default_mangle_relocs (bfd *outbfd ATTRIBUTE_UNUSED, asection *insec,
1361 arelent ***relocs_ptr, long *reloc_count_ptr,
1362 char *contents ATTRIBUTE_UNUSED,
1363 bfd_size_type contents_size ATTRIBUTE_UNUSED)
1365 if (insec->output_offset != 0)
1371 reloc_count = *reloc_count_ptr;
1372 relocs = *relocs_ptr;
1373 for (i = 0; i < reloc_count; i++, relocs++)
1374 (*relocs)->address += insec->output_offset;
1380 /* NetWare on the i386 supports a restricted set of relocs, which are
1381 different from those used on other i386 targets. This routine
1382 converts the relocs. It is, obviously, very target dependent. At
1383 the moment, the nlm32-i386 backend performs similar translations;
1384 however, it is more reliable and efficient to do them here. */
1386 static reloc_howto_type nlm_i386_pcrel_howto =
1387 HOWTO (1, /* type */
1389 2, /* size (0 = byte, 1 = short, 2 = long) */
1391 TRUE, /* pc_relative */
1393 complain_overflow_signed, /* complain_on_overflow */
1394 0, /* special_function */
1395 "DISP32", /* name */
1396 TRUE, /* partial_inplace */
1397 0xffffffff, /* src_mask */
1398 0xffffffff, /* dst_mask */
1399 TRUE); /* pcrel_offset */
1402 i386_mangle_relocs (bfd *outbfd, asection *insec, arelent ***relocs_ptr,
1403 long *reloc_count_ptr, char *contents,
1404 bfd_size_type contents_size)
1406 long reloc_count, i;
1409 reloc_count = *reloc_count_ptr;
1410 relocs = *relocs_ptr;
1411 for (i = 0; i < reloc_count; i++)
1415 bfd_size_type address;
1419 /* PR 17512: file: 057f89c1. */
1420 if (rel->sym_ptr_ptr == NULL)
1422 sym = *rel->sym_ptr_ptr;
1424 /* We're moving the relocs from the input section to the output
1425 section, so we must adjust the address accordingly. */
1426 address = rel->address;
1427 rel->address += insec->output_offset;
1429 /* Note that no serious harm will ensue if we fail to change a
1430 reloc. The backend will fail when writing out the reloc. */
1432 /* Make sure this reloc is within the data we have. We use only
1433 4 byte relocs here, so we insist on having 4 bytes. */
1434 if (address + 4 > contents_size)
1437 /* A PC relative reloc entirely within a single section is
1438 completely unnecessary. This can be generated by ld -r. */
1439 if (sym == insec->symbol
1440 && rel->howto != NULL
1441 && rel->howto->pc_relative
1442 && ! rel->howto->pcrel_offset)
1446 memmove (relocs, relocs + 1,
1447 (size_t) ((reloc_count - i) * sizeof (arelent *)));
1451 /* Get the amount the relocation will add in. */
1452 addend = rel->addend + sym->value;
1454 /* NetWare doesn't support PC relative relocs against defined
1455 symbols, so we have to eliminate them by doing the relocation
1456 now. We can only do this if the reloc is within a single
1458 if (rel->howto != NULL
1459 && rel->howto->pc_relative
1460 && bfd_get_section (sym) == insec->output_section)
1464 if (rel->howto->pcrel_offset)
1467 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1469 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1473 memmove (relocs, relocs + 1,
1474 (size_t) ((reloc_count - i) * sizeof (arelent *)));
1478 /* NetWare doesn't support reloc addends, so we get rid of them
1479 here by simply adding them into the object data. We handle
1480 the symbol value, if any, the same way. */
1482 && rel->howto != NULL
1483 && rel->howto->rightshift == 0
1484 && rel->howto->size == 2
1485 && rel->howto->bitsize == 32
1486 && rel->howto->bitpos == 0
1487 && rel->howto->src_mask == 0xffffffff
1488 && rel->howto->dst_mask == 0xffffffff)
1492 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1494 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1496 /* Adjust the reloc for the changes we just made. */
1498 if (! bfd_is_und_section (bfd_get_section (sym)))
1499 rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
1502 /* NetWare uses a reloc with pcrel_offset set. We adjust
1503 pc_relative relocs accordingly. We are going to change the
1504 howto field, so we can only do this if the current one is
1505 compatible. We should check that special_function is NULL
1506 here, but at the moment coff-i386 uses a special_function
1507 which does not affect what we are doing here. */
1508 if (rel->howto != NULL
1509 && rel->howto->pc_relative
1510 && ! rel->howto->pcrel_offset
1511 && rel->howto->rightshift == 0
1512 && rel->howto->size == 2
1513 && rel->howto->bitsize == 32
1514 && rel->howto->bitpos == 0
1515 && rel->howto->src_mask == 0xffffffff
1516 && rel->howto->dst_mask == 0xffffffff)
1520 /* When pcrel_offset is not set, it means that the negative
1521 of the address of the memory location is stored in the
1522 memory location. We must add it back in. */
1523 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1525 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1527 /* We must change to a new howto. */
1528 rel->howto = &nlm_i386_pcrel_howto;
1533 #endif /* NLMCONV_I386 */
1535 #ifdef NLMCONV_ALPHA
1537 /* On the Alpha the first reloc for every section must be a special
1538 relocs which hold the GP address. Also, the first reloc in the
1539 file must be a special reloc which holds the address of the .lita
1542 static reloc_howto_type nlm32_alpha_nw_howto =
1543 HOWTO (ALPHA_R_NW_RELOC, /* type */
1545 0, /* size (0 = byte, 1 = short, 2 = long) */
1547 FALSE, /* pc_relative */
1549 complain_overflow_dont, /* complain_on_overflow */
1550 0, /* special_function */
1551 "NW_RELOC", /* name */
1552 FALSE, /* partial_inplace */
1555 FALSE); /* pcrel_offset */
1558 alpha_mangle_relocs (bfd *outbfd, asection *insec,
1559 arelent ***relocs_ptr, long *reloc_count_ptr,
1560 char *contents ATTRIBUTE_UNUSED,
1561 bfd_size_type contents_size ATTRIBUTE_UNUSED)
1563 long old_reloc_count;
1564 arelent **old_relocs;
1567 old_reloc_count = *reloc_count_ptr;
1568 old_relocs = *relocs_ptr;
1569 relocs = (arelent **) xmalloc ((old_reloc_count + 3) * sizeof (arelent *));
1570 *relocs_ptr = relocs;
1572 if (nlm_alpha_backend_data (outbfd)->lita_address == 0)
1575 asection *lita_section;
1577 inbfd = insec->owner;
1578 lita_section = bfd_get_section_by_name (inbfd, _LITA);
1579 if (lita_section != (asection *) NULL)
1581 nlm_alpha_backend_data (outbfd)->lita_address =
1582 bfd_get_section_vma (inbfd, lita_section);
1583 nlm_alpha_backend_data (outbfd)->lita_size =
1584 bfd_section_size (inbfd, lita_section);
1588 /* Avoid outputting this reloc again. */
1589 nlm_alpha_backend_data (outbfd)->lita_address = 4;
1592 *relocs = (arelent *) xmalloc (sizeof (arelent));
1593 (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1594 (*relocs)->address = nlm_alpha_backend_data (outbfd)->lita_address;
1595 (*relocs)->addend = nlm_alpha_backend_data (outbfd)->lita_size + 1;
1596 (*relocs)->howto = &nlm32_alpha_nw_howto;
1598 ++(*reloc_count_ptr);
1601 /* Get the GP value from bfd. */
1602 if (nlm_alpha_backend_data (outbfd)->gp == 0)
1603 nlm_alpha_backend_data (outbfd)->gp =
1604 bfd_ecoff_get_gp_value (insec->owner);
1606 *relocs = (arelent *) xmalloc (sizeof (arelent));
1607 (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1608 (*relocs)->address = nlm_alpha_backend_data (outbfd)->gp;
1609 (*relocs)->addend = 0;
1610 (*relocs)->howto = &nlm32_alpha_nw_howto;
1612 ++(*reloc_count_ptr);
1614 memcpy (relocs, old_relocs, (size_t) old_reloc_count * sizeof (arelent *));
1615 relocs[old_reloc_count] = (arelent *) NULL;
1619 if (insec->output_offset != 0)
1623 for (i = 0; i < (bfd_size_type) old_reloc_count; i++, relocs++)
1624 (*relocs)->address += insec->output_offset;
1628 #endif /* NLMCONV_ALPHA */
1630 #ifdef NLMCONV_POWERPC
1632 /* We keep a linked list of stubs which we must build. Because BFD
1633 requires us to know the sizes of all sections before we can set the
1634 contents of any, we must figure out which stubs we want to build
1635 before we can actually build any of them. */
1639 /* Next stub in linked list. */
1640 struct powerpc_stub *next;
1642 /* Symbol whose value is the start of the stub. This is a symbol
1643 whose name begins with `.'. */
1646 /* Symbol we are going to create a reloc against. This is a symbol
1647 with the same name as START but without the leading `.'. */
1650 /* The TOC index for this stub. This is the index into the TOC
1651 section at which the reloc is created. */
1652 unsigned int toc_index;
1655 /* The linked list of stubs. */
1657 static struct powerpc_stub *powerpc_stubs;
1659 /* This is what a stub looks like. The first instruction will get
1660 adjusted with the correct TOC index. */
1662 static unsigned long powerpc_stub_insns[] =
1664 0x81820000, /* lwz r12,0(r2) */
1665 0x90410014, /* stw r2,20(r1) */
1666 0x800c0000, /* lwz r0,0(r12) */
1667 0x804c0004, /* lwz r2,r(r12) */
1668 0x7c0903a6, /* mtctr r0 */
1669 0x4e800420, /* bctr */
1670 0, /* Traceback table. */
1675 #define POWERPC_STUB_INSN_COUNT \
1676 (sizeof powerpc_stub_insns / sizeof powerpc_stub_insns[0])
1678 #define POWERPC_STUB_SIZE (4 * POWERPC_STUB_INSN_COUNT)
1680 /* Each stub uses a four byte TOC entry. */
1681 #define POWERPC_STUB_TOC_ENTRY_SIZE (4)
1683 /* The original size of the .got section. */
1684 static bfd_size_type powerpc_initial_got_size;
1686 /* Look for all undefined symbols beginning with `.', and prepare to
1687 build a stub for each one. */
1690 powerpc_build_stubs (bfd *inbfd, bfd *outbfd ATTRIBUTE_UNUSED,
1691 asymbol ***symbols_ptr, long *symcount_ptr)
1695 unsigned int got_base;
1700 /* Make a section to hold stubs. We don't set SEC_HAS_CONTENTS for
1701 the section to prevent copy_sections from reading from it. */
1702 stub_sec = bfd_make_section_with_flags (inbfd, ".stubs",
1707 if (stub_sec == (asection *) NULL
1708 || ! bfd_set_section_alignment (inbfd, stub_sec, 2))
1709 bfd_fatal (".stubs");
1711 /* Get the TOC section, which is named .got. */
1712 got_sec = bfd_get_section_by_name (inbfd, ".got");
1713 if (got_sec == (asection *) NULL)
1715 got_sec = bfd_make_section_with_flags (inbfd, ".got",
1720 | SEC_HAS_CONTENTS));
1721 if (got_sec == (asection *) NULL
1722 || ! bfd_set_section_alignment (inbfd, got_sec, 2))
1726 powerpc_initial_got_size = bfd_section_size (inbfd, got_sec);
1727 got_base = powerpc_initial_got_size;
1728 got_base = (got_base + 3) &~ 3;
1732 symcount = *symcount_ptr;
1733 for (i = 0; i < symcount; i++)
1738 struct powerpc_stub *item;
1740 sym = (*symbols_ptr)[i];
1742 /* We must make a stub for every undefined symbol whose name
1744 if (bfd_asymbol_name (sym)[0] != '.'
1745 || ! bfd_is_und_section (bfd_get_section (sym)))
1748 /* Make a new undefined symbol with the same name but without
1750 newsym = xmalloc (sizeof (asymbol));
1752 newname = xmalloc (strlen (bfd_asymbol_name (sym)));
1753 strcpy (newname, bfd_asymbol_name (sym) + 1);
1754 newsym->name = newname;
1756 /* Define the `.' symbol to be in the stub section. */
1757 sym->section = stub_sec;
1758 sym->value = stubcount * POWERPC_STUB_SIZE;
1759 /* We set the BSF_DYNAMIC flag here so that we can check it when
1760 we are mangling relocs. FIXME: This is a hack. */
1761 sym->flags = BSF_LOCAL | BSF_DYNAMIC;
1763 /* Add this stub to the linked list. */
1764 item = (struct powerpc_stub *) xmalloc (sizeof (struct powerpc_stub));
1766 item->reloc = newsym;
1767 item->toc_index = got_base + stubcount * POWERPC_STUB_TOC_ENTRY_SIZE;
1769 item->next = powerpc_stubs;
1770 powerpc_stubs = item;
1778 struct powerpc_stub *l;
1780 /* Add the new symbols we just created to the symbol table. */
1781 *symbols_ptr = (asymbol **) xrealloc ((char *) *symbols_ptr,
1782 ((symcount + stubcount)
1783 * sizeof (asymbol)));
1784 *symcount_ptr += stubcount;
1785 s = &(*symbols_ptr)[symcount];
1786 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1789 /* Set the size of the .stubs section and increase the size of
1790 the .got section. */
1791 if (! bfd_set_section_size (inbfd, stub_sec,
1792 stubcount * POWERPC_STUB_SIZE)
1793 || ! bfd_set_section_size (inbfd, got_sec,
1796 * POWERPC_STUB_TOC_ENTRY_SIZE))))
1797 bfd_fatal (_("stub section sizes"));
1801 /* Resolve all the stubs for PowerPC NetWare. We fill in the contents
1802 of the output section, and create new relocs in the TOC. */
1805 powerpc_resolve_stubs (bfd *inbfd, bfd *outbfd)
1807 bfd_byte buf[POWERPC_STUB_SIZE];
1809 unsigned int stubcount;
1813 struct powerpc_stub *l;
1815 if (powerpc_stubs == (struct powerpc_stub *) NULL)
1818 for (i = 0; i < POWERPC_STUB_INSN_COUNT; i++)
1819 bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[i], buf + i * 4);
1821 got_sec = bfd_get_section_by_name (inbfd, ".got");
1822 assert (got_sec != (asection *) NULL);
1823 assert (got_sec->output_section->orelocation == (arelent **) NULL);
1826 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1828 relocs = (arelent **) xmalloc (stubcount * sizeof (arelent *));
1831 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1835 /* Adjust the first instruction to use the right TOC index. */
1836 bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[0] + l->toc_index, buf);
1838 /* Write this stub out. */
1839 if (! bfd_set_section_contents (outbfd,
1840 bfd_get_section (l->start),
1844 bfd_fatal (_("writing stub"));
1846 /* Create a new reloc for the TOC entry. */
1847 reloc = (arelent *) xmalloc (sizeof (arelent));
1848 reloc->sym_ptr_ptr = &l->reloc;
1849 reloc->address = l->toc_index + got_sec->output_offset;
1851 reloc->howto = bfd_reloc_type_lookup (inbfd, BFD_RELOC_32);
1856 bfd_set_reloc (outbfd, got_sec->output_section, relocs, stubcount);
1859 /* Adjust relocation entries for PowerPC NetWare. We do not output
1860 TOC relocations. The object code already contains the offset from
1861 the TOC pointer. When the function is called, the TOC register,
1862 r2, will be set to the correct TOC value, so there is no need for
1863 any further reloc. */
1866 powerpc_mangle_relocs (bfd *outbfd, asection *insec,
1867 arelent ***relocs_ptr,
1868 long *reloc_count_ptr, char *contents,
1869 bfd_size_type contents_size ATTRIBUTE_UNUSED)
1871 reloc_howto_type *toc_howto;
1876 toc_howto = bfd_reloc_type_lookup (insec->owner, BFD_RELOC_PPC_TOC16);
1877 if (toc_howto == (reloc_howto_type *) NULL)
1878 fatal (_("Unable to locate PPC_TOC16 reloc information"));
1880 /* If this is the .got section, clear out all the contents beyond
1881 the initial size. We must do this here because copy_sections is
1882 going to write out whatever we return in the contents field. */
1883 if (strcmp (bfd_get_section_name (insec->owner, insec), ".got") == 0)
1884 memset (contents + powerpc_initial_got_size, 0,
1885 (size_t) (bfd_get_section_size (insec) - powerpc_initial_got_size));
1887 reloc_count = *reloc_count_ptr;
1888 relocs = *relocs_ptr;
1889 for (i = 0; i < reloc_count; i++)
1896 sym = *rel->sym_ptr_ptr;
1898 /* Convert any relocs against the .bss section into relocs
1899 against the .data section. */
1900 if (strcmp (bfd_get_section_name (outbfd, bfd_get_section (sym)),
1901 NLM_UNINITIALIZED_DATA_NAME) == 0)
1905 datasec = bfd_get_section_by_name (outbfd,
1906 NLM_INITIALIZED_DATA_NAME);
1907 if (datasec != NULL)
1909 rel->addend += (bfd_get_section_vma (outbfd,
1910 bfd_get_section (sym))
1912 rel->sym_ptr_ptr = datasec->symbol_ptr_ptr;
1913 sym = *rel->sym_ptr_ptr;
1917 /* PR 17512: file: 70cfde95. */
1918 if (rel->howto == NULL)
1921 /* We must be able to resolve all PC relative relocs at this
1922 point. If we get a branch to an undefined symbol we build a
1923 stub, since NetWare will resolve undefined symbols into a
1924 pointer to a function descriptor. */
1925 if (rel->howto->pc_relative)
1927 /* This check for whether a symbol is in the same section as
1928 the reloc will be wrong if there is a PC relative reloc
1929 between two sections both of which were placed in the
1930 same output section. This should not happen. */
1931 if (bfd_get_section (sym) != insec->output_section)
1932 non_fatal (_("unresolved PC relative reloc against %s"),
1933 bfd_asymbol_name (sym));
1938 if (rel->address > contents_size - 4)
1940 non_fatal (_("Out of range relocation: %lx"),
1941 (long) rel->address);
1945 assert (rel->howto->size == 2 && rel->howto->pcrel_offset);
1946 val = bfd_get_32 (outbfd, (bfd_byte *) contents + rel->address);
1947 val = ((val &~ rel->howto->dst_mask)
1948 | (((val & rel->howto->src_mask)
1949 + (sym->value - rel->address)
1951 & rel->howto->dst_mask));
1952 bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
1954 /* If this reloc is against an stubbed symbol and the
1957 then we replace the next instruction with
1959 This reloads the TOC pointer after a stub call. */
1960 if (bfd_asymbol_name (sym)[0] == '.'
1961 && (sym->flags & BSF_DYNAMIC) != 0
1962 && (bfd_get_32 (outbfd,
1963 (bfd_byte *) contents + rel->address + 4)
1964 == 0x4ffffb82)) /* cror 31,31,31 */
1965 bfd_put_32 (outbfd, (bfd_vma) 0x80410014, /* lwz r2,20(r1) */
1966 (bfd_byte *) contents + rel->address + 4);
1970 memmove (relocs, relocs + 1,
1971 (size_t) ((reloc_count - 1) * sizeof (arelent *)));
1976 /* When considering a TOC reloc, we do not want to include the
1977 symbol value. The symbol will be start of the TOC section
1978 (which is named .got). We do want to include the addend. */
1979 if (rel->howto == toc_howto)
1982 sym_value = sym->value;
1984 /* If this is a relocation against a symbol with a value, or
1985 there is a reloc addend, we need to update the addend in the
1987 if (sym_value + rel->addend != 0)
1991 switch (rel->howto->size)
1994 if (rel->address > contents_size - 2)
1996 non_fatal (_("Out of range relocation: %lx"),
1997 (long) rel->address);
2001 val = bfd_get_16 (outbfd,
2002 (bfd_byte *) contents + rel->address);
2003 val = ((val &~ rel->howto->dst_mask)
2004 | (((val & rel->howto->src_mask)
2007 & rel->howto->dst_mask));
2008 if ((bfd_signed_vma) val < - 0x8000
2009 || (bfd_signed_vma) val >= 0x8000)
2010 non_fatal (_("overflow when adjusting relocation against %s"),
2011 bfd_asymbol_name (sym));
2012 bfd_put_16 (outbfd, val, (bfd_byte *) contents + rel->address);
2016 /* PR 17512: file: 0455a112. */
2017 if (rel->address > contents_size - 4)
2019 non_fatal (_("Out of range relocation: %lx"),
2020 (long) rel->address);
2024 val = bfd_get_32 (outbfd,
2025 (bfd_byte *) contents + rel->address);
2026 val = ((val &~ rel->howto->dst_mask)
2027 | (((val & rel->howto->src_mask)
2030 & rel->howto->dst_mask));
2031 bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
2035 fatal (_("Unsupported relocation size: %d"), rel->howto->size);
2038 if (! bfd_is_und_section (bfd_get_section (sym)))
2039 rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
2043 /* Now that we have incorporated the addend, remove any TOC
2045 if (rel->howto == toc_howto)
2049 memmove (relocs, relocs + 1,
2050 (size_t) ((reloc_count - i) * sizeof (arelent *)));
2054 rel->address += insec->output_offset;
2058 #endif /* NLMCONV_POWERPC */
2060 /* Name of linker. */
2062 #define LD_NAME "ld"
2065 /* The user has specified several input files. Invoke the linker to
2066 link them all together, and convert and delete the resulting output
2070 link_inputs (struct string_list *inputs, char *ld, char * mfile)
2073 struct string_list *q;
2082 for (q = inputs; q != NULL; q = q->next)
2085 argv = (char **) alloca ((c + 7) * sizeof (char *));
2092 /* Find the linker to invoke based on how nlmconv was run. */
2093 p = program_name + strlen (program_name);
2094 while (p != program_name)
2098 ld = (char *) xmalloc (p - program_name + strlen (LD_NAME) + 1);
2099 memcpy (ld, program_name, p - program_name);
2100 strcpy (ld + (p - program_name), LD_NAME);
2109 ld = (char *) LD_NAME;
2111 unlink_on_exit = make_temp_file (".O");
2114 argv[1] = (char *) "-Ur";
2115 argv[2] = (char *) "-o";
2116 argv[3] = unlink_on_exit;
2117 /* If we have been given the name of a mapfile and that
2118 name is not 'stderr' then pass it on to the linker. */
2121 && strcmp (mfile, "stderr") == 0)
2123 argv[4] = (char *) "-Map";
2130 for (q = inputs; q != NULL; q = q->next, i++)
2131 argv[i] = q->string;
2136 for (i = 0; argv[i] != NULL; i++)
2137 fprintf (stderr, " %s", argv[i]);
2138 fprintf (stderr, "\n");
2141 pid = pexecute (ld, argv, program_name, (char *) NULL, &errfmt, &errarg,
2142 PEXECUTE_SEARCH | PEXECUTE_ONE);
2145 fprintf (stderr, _("%s: execution of %s failed: "), program_name, ld);
2146 fprintf (stderr, errfmt, errarg);
2147 unlink (unlink_on_exit);
2151 if (pwait (pid, &status, 0) < 0)
2154 unlink (unlink_on_exit);
2160 non_fatal (_("Execution of %s failed"), ld);
2161 unlink (unlink_on_exit);
2165 return unlink_on_exit;