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);
215 expandargv (&argc, &argv);
218 set_default_bfd_target ();
220 while ((opt = getopt_long (argc, argv, "dHhI:l:O:T:Vv", long_options,
231 show_usage (stdout, 0);
234 input_format = optarg;
240 output_format = optarg;
243 header_file = optarg;
247 print_version ("nlmconv");
252 show_usage (stderr, 1);
257 /* The input and output files may be named on the command line. */
261 input_file = argv[optind];
265 output_file = argv[optind];
268 show_usage (stderr, 1);
269 if (filename_cmp (input_file, output_file) == 0)
271 fatal (_("input and output files must be different"));
276 /* Initialize the header information to default values. */
277 fixed_hdr = &fixed_hdr_struct;
278 memset ((void *) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct);
279 var_hdr = &var_hdr_struct;
280 memset ((void *) &var_hdr_struct, 0, sizeof var_hdr_struct);
281 version_hdr = &version_hdr_struct;
282 memset ((void *) &version_hdr_struct, 0, sizeof version_hdr_struct);
283 copyright_hdr = ©right_hdr_struct;
284 memset ((void *) ©right_hdr_struct, 0, sizeof copyright_hdr_struct);
285 extended_hdr = &extended_hdr_struct;
286 memset ((void *) &extended_hdr_struct, 0, sizeof extended_hdr_struct);
287 check_procedure = NULL;
290 exit_procedure = "_Stop";
291 export_symbols = NULL;
295 import_symbols = NULL;
298 sharelib_file = NULL;
299 start_procedure = "_Prelude";
305 /* Parse the header file (if there is one). */
306 if (header_file != NULL)
308 if (! nlmlex_file (header_file)
310 || parse_errors != 0)
314 if (input_files != NULL)
316 if (input_file != NULL)
318 fatal (_("input file named both on command line and with INPUT"));
320 if (input_files->next == NULL)
321 input_file = input_files->string;
323 input_file = link_inputs (input_files, ld_arg, map_file);
325 else if (input_file == NULL)
327 non_fatal (_("no input file"));
328 show_usage (stderr, 1);
331 inbfd = bfd_openr (input_file, input_format);
333 bfd_fatal (input_file);
335 if (! bfd_check_format_matches (inbfd, bfd_object, &matching))
337 bfd_nonfatal (input_file);
338 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
340 list_matching_formats (matching);
346 if (output_format == NULL)
347 output_format = select_output_format (bfd_get_arch (inbfd),
348 bfd_get_mach (inbfd),
349 bfd_big_endian (inbfd));
351 assert (output_format != NULL);
353 /* Use the output file named on the command line if it exists.
354 Otherwise use the file named in the OUTPUT statement. */
355 if (output_file == NULL)
357 non_fatal (_("no name for output file"));
358 show_usage (stderr, 1);
361 outbfd = bfd_openw (output_file, output_format);
363 bfd_fatal (output_file);
364 if (! bfd_set_format (outbfd, bfd_object))
365 bfd_fatal (output_file);
367 assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour);
369 /* XXX: Should we accept the unknown bfd format here ? */
370 if (bfd_arch_get_compatible (inbfd, outbfd, TRUE) == NULL)
371 non_fatal (_("warning: input and output formats are not compatible"));
373 /* Move the values read from the command file into outbfd. */
374 *nlm_fixed_header (outbfd) = fixed_hdr_struct;
375 *nlm_variable_header (outbfd) = var_hdr_struct;
376 *nlm_version_header (outbfd) = version_hdr_struct;
377 *nlm_copyright_header (outbfd) = copyright_hdr_struct;
378 *nlm_extended_header (outbfd) = extended_hdr_struct;
380 /* Start copying the input BFD to the output BFD. */
381 if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd)))
382 bfd_fatal (bfd_get_filename (outbfd));
384 symsize = bfd_get_symtab_upper_bound (inbfd);
386 bfd_fatal (input_file);
387 symbols = (asymbol **) xmalloc (symsize);
388 symcount = bfd_canonicalize_symtab (inbfd, symbols);
390 bfd_fatal (input_file);
392 /* Make sure we have a .bss section. */
393 bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME);
396 bss_sec = bfd_make_section_with_flags (outbfd,
397 NLM_UNINITIALIZED_DATA_NAME,
400 || ! bfd_set_section_alignment (outbfd, bss_sec, 1))
401 bfd_fatal (_("make .bss section"));
404 /* We store the original section names in the .nlmsections section,
405 so that programs which understand it can resurrect the original
406 sections from the NLM. We will put a pointer to .nlmsections in
407 the NLM header area. */
408 secsec = bfd_make_section_with_flags (outbfd, ".nlmsections",
411 bfd_fatal (_("make .nlmsections section"));
413 #ifdef NLMCONV_POWERPC
414 /* For PowerPC NetWare we need to build stubs for calls to undefined
415 symbols. Because each stub requires an entry in the TOC section
416 which must be at the same location as other entries in the TOC
417 section, we must do this before determining where the TOC section
418 goes in setup_sections. */
419 if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
420 powerpc_build_stubs (inbfd, outbfd, &symbols, &symcount);
423 /* Set up the sections. */
424 bfd_map_over_sections (inbfd, setup_sections, (void *) outbfd);
426 text_sec = bfd_get_section_by_name (outbfd, NLM_CODE_NAME);
428 /* The .bss section immediately follows the .data section. */
429 data_sec = bfd_get_section_by_name (outbfd, NLM_INITIALIZED_DATA_NAME);
430 if (data_sec != NULL)
434 vma = bfd_get_section_size (data_sec);
435 align = 1 << bss_sec->alignment_power;
436 add = ((vma + align - 1) &~ (align - 1)) - vma;
438 if (! bfd_set_section_vma (outbfd, bss_sec, vma))
439 bfd_fatal (_("set .bss vma"));
442 bfd_size_type data_size;
444 data_size = bfd_get_section_size (data_sec);
445 if (! bfd_set_section_size (outbfd, data_sec, data_size + add))
446 bfd_fatal (_("set .data size"));
450 /* Adjust symbol information. */
451 inlead = bfd_get_symbol_leading_char (inbfd);
452 outlead = bfd_get_symbol_leading_char (outbfd);
457 newsyms = (asymbol **) xmalloc (newsymalloc * sizeof (asymbol *));
460 for (i = 0; i < symcount; i++)
466 /* Add or remove a leading underscore. */
467 if (inlead != outlead)
471 if (bfd_asymbol_name (sym)[0] == inlead)
479 new_name = xmalloc (strlen (bfd_asymbol_name (sym)) + 1);
480 new_name[0] = outlead;
481 strcpy (new_name + 1, bfd_asymbol_name (sym) + 1);
482 sym->name = new_name;
490 new_name = xmalloc (strlen (bfd_asymbol_name (sym)) + 2);
491 new_name[0] = outlead;
492 strcpy (new_name + 1, bfd_asymbol_name (sym));
493 sym->name = new_name;
497 /* NLM's have an uninitialized data section, but they do not
498 have a common section in the Unix sense. Move all common
499 symbols into the .bss section, and mark them as exported. */
500 if (bfd_is_com_section (bfd_get_section (sym)))
502 bfd_vma size = sym->value;
504 sym->section = bss_sec;
505 sym->value = bfd_get_section_size (bss_sec);
507 align = 1 << bss_sec->alignment_power;
508 size = (size + align - 1) & ~(align - 1);
509 bfd_set_section_size (outbfd, bss_sec, size);
510 sym->flags |= BSF_EXPORT | BSF_GLOBAL;
512 else if (bfd_get_section (sym)->output_section != NULL)
514 /* Move the symbol into the output section. */
515 sym->value += bfd_get_section (sym)->output_offset;
516 sym->section = bfd_get_section (sym)->output_section;
517 /* This is no longer a section symbol. */
518 sym->flags &=~ BSF_SECTION_SYM;
521 /* Force _edata and _end to be defined. This would normally be
522 done by the linker, but the manipulation of the common
523 symbols will confuse it. */
524 if ((sym->flags & BSF_DEBUGGING) == 0
525 && bfd_asymbol_name (sym)[0] == '_'
526 && bfd_is_und_section (bfd_get_section (sym)))
528 if (strcmp (bfd_asymbol_name (sym), "_edata") == 0)
530 sym->section = bss_sec;
533 if (strcmp (bfd_asymbol_name (sym), "_end") == 0)
535 sym->section = bss_sec;
539 #ifdef NLMCONV_POWERPC
540 /* For PowerPC NetWare, we define __GOT0. This is the start
541 of the .got section. */
542 if (bfd_get_arch (inbfd) == bfd_arch_powerpc
543 && strcmp (bfd_asymbol_name (sym), "__GOT0") == 0)
547 got_sec = bfd_get_section_by_name (inbfd, ".got");
548 assert (got_sec != (asection *) NULL);
549 sym->value = got_sec->output_offset;
550 sym->section = got_sec->output_section;
555 /* If this is a global symbol, check the export list. */
556 if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0)
558 struct string_list *l;
561 /* Unfortunately, a symbol can appear multiple times on the
562 export list, with and without prefixes. */
564 for (l = export_symbols; l != NULL; l = l->next)
566 if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
572 zbase = strchr (l->string, '@');
574 && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
576 /* We must add a symbol with this prefix. */
577 if (newsymcount >= newsymalloc)
580 newsyms = ((asymbol **)
581 xrealloc ((void *) newsyms,
583 * sizeof (asymbol *))));
585 newsyms[newsymcount] =
586 (asymbol *) xmalloc (sizeof (asymbol));
587 *newsyms[newsymcount] = *sym;
588 newsyms[newsymcount]->name = l->string;
595 /* The unmodified symbol is actually not exported at
597 sym->flags &=~ (BSF_GLOBAL | BSF_EXPORT);
598 sym->flags |= BSF_LOCAL;
602 /* If it's an undefined symbol, see if it's on the import list.
603 Change the prefix if necessary. */
604 if (bfd_is_und_section (bfd_get_section (sym)))
606 struct string_list *l;
608 for (l = import_symbols; l != NULL; l = l->next)
610 if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
616 zbase = strchr (l->string, '@');
618 && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
620 sym->name = l->string;
626 non_fatal (_("warning: symbol %s imported but not in import list"),
627 bfd_asymbol_name (sym));
630 /* See if it's one of the special named symbols. */
631 if ((sym->flags & BSF_DEBUGGING) == 0)
635 /* FIXME: If these symbols are not in the .text section, we
636 add the .text section size to the value. This may not be
637 correct for all targets. I'm not sure how this should
638 really be handled. */
639 if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0)
641 val = bfd_asymbol_value (sym);
642 if (bfd_get_section (sym) == data_sec
643 && text_sec != (asection *) NULL)
644 val += bfd_section_size (outbfd, text_sec);
645 if (! bfd_set_start_address (outbfd, val))
646 bfd_fatal (_("set start address"));
649 if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0)
651 val = bfd_asymbol_value (sym);
652 if (bfd_get_section (sym) == data_sec
653 && text_sec != (asection *) NULL)
654 val += bfd_section_size (outbfd, text_sec);
655 nlm_fixed_header (outbfd)->exitProcedureOffset = val;
658 if (check_procedure != NULL
659 && strcmp (bfd_asymbol_name (sym), check_procedure) == 0)
661 val = bfd_asymbol_value (sym);
662 if (bfd_get_section (sym) == data_sec
663 && text_sec != (asection *) NULL)
664 val += bfd_section_size (outbfd, text_sec);
665 nlm_fixed_header (outbfd)->checkUnloadProcedureOffset = val;
673 endsym->value = bfd_get_section_size (bss_sec);
675 /* FIXME: If any relocs referring to _end use inplace addends,
676 then I think they need to be updated. This is handled by
677 i386_mangle_relocs. Is it needed for any other object
681 if (newsymcount == 0)
685 outsyms = (asymbol **) xmalloc ((symcount + newsymcount + 1)
686 * sizeof (asymbol *));
687 memcpy (outsyms, symbols, symcount * sizeof (asymbol *));
688 memcpy (outsyms + symcount, newsyms, newsymcount * sizeof (asymbol *));
689 outsyms[symcount + newsymcount] = NULL;
692 bfd_set_symtab (outbfd, outsyms, symcount + newsymcount);
695 non_fatal (_("warning: START procedure %s not defined"), start_procedure);
697 non_fatal (_("warning: EXIT procedure %s not defined"), exit_procedure);
698 if (check_procedure != NULL && ! gotcheck)
699 non_fatal (_("warning: CHECK procedure %s not defined"), check_procedure);
701 /* Add additional sections required for the header information. */
702 if (custom_file != NULL)
704 custom_data = fopen (custom_file, "r");
705 if (custom_data == NULL
706 || fstat (fileno (custom_data), &st) < 0)
708 fprintf (stderr, "%s:%s: %s\n", program_name, custom_file,
714 custom_size = st.st_size;
715 custom_section = bfd_make_section_with_flags (outbfd, ".nlmcustom",
717 if (custom_section == NULL
718 || ! bfd_set_section_size (outbfd, custom_section, custom_size))
719 bfd_fatal (_("custom section"));
722 if (help_file != NULL)
724 help_data = fopen (help_file, "r");
725 if (help_data == NULL
726 || fstat (fileno (help_data), &st) < 0)
728 fprintf (stderr, "%s:%s: %s\n", program_name, help_file,
734 help_size = st.st_size;
735 help_section = bfd_make_section_with_flags (outbfd, ".nlmhelp",
737 if (help_section == NULL
738 || ! bfd_set_section_size (outbfd, help_section, help_size))
739 bfd_fatal (_("help section"));
740 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
743 if (message_file != NULL)
745 message_data = fopen (message_file, "r");
746 if (message_data == NULL
747 || fstat (fileno (message_data), &st) < 0)
749 fprintf (stderr, "%s:%s: %s\n", program_name, message_file,
755 message_size = st.st_size;
756 message_section = bfd_make_section_with_flags (outbfd,
759 if (message_section == NULL
760 || ! bfd_set_section_size (outbfd, message_section, message_size))
761 bfd_fatal (_("message section"));
762 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
767 struct string_list *l;
770 for (l = modules; l != NULL; l = l->next)
771 module_size += strlen (l->string) + 1;
772 module_section = bfd_make_section_with_flags (outbfd, ".nlmmodules",
774 if (module_section == NULL
775 || ! bfd_set_section_size (outbfd, module_section, module_size))
776 bfd_fatal (_("module section"));
778 if (rpc_file != NULL)
780 rpc_data = fopen (rpc_file, "r");
782 || fstat (fileno (rpc_data), &st) < 0)
784 fprintf (stderr, "%s:%s: %s\n", program_name, rpc_file,
790 rpc_size = st.st_size;
791 rpc_section = bfd_make_section_with_flags (outbfd, ".nlmrpc",
793 if (rpc_section == NULL
794 || ! bfd_set_section_size (outbfd, rpc_section, rpc_size))
795 bfd_fatal (_("rpc section"));
796 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
799 if (sharelib_file != NULL)
801 sharedbfd = bfd_openr (sharelib_file, output_format);
802 if (sharedbfd == NULL
803 || ! bfd_check_format (sharedbfd, bfd_object))
805 fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
806 bfd_errmsg (bfd_get_error ()));
807 sharelib_file = NULL;
811 sharedhdr = *nlm_fixed_header (sharedbfd);
812 bfd_close (sharedbfd);
813 shared_data = fopen (sharelib_file, "r");
814 if (shared_data == NULL
815 || (fstat (fileno (shared_data), &st) < 0))
817 fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
819 sharelib_file = NULL;
823 /* If we were clever, we could just copy out the
824 sections of the shared library which we actually
825 need. However, we would have to figure out the sizes
826 of the external and public information, and that can
827 not be done without reading through them. */
828 if (sharedhdr.uninitializedDataSize > 0)
830 /* There is no place to record this information. */
831 non_fatal (_("%s: warning: shared libraries can not have uninitialized data"),
834 shared_offset = st.st_size;
835 if (shared_offset > (size_t) sharedhdr.codeImageOffset)
836 shared_offset = sharedhdr.codeImageOffset;
837 if (shared_offset > (size_t) sharedhdr.dataImageOffset)
838 shared_offset = sharedhdr.dataImageOffset;
839 if (shared_offset > (size_t) sharedhdr.relocationFixupOffset)
840 shared_offset = sharedhdr.relocationFixupOffset;
841 if (shared_offset > (size_t) sharedhdr.externalReferencesOffset)
842 shared_offset = sharedhdr.externalReferencesOffset;
843 if (shared_offset > (size_t) sharedhdr.publicsOffset)
844 shared_offset = sharedhdr.publicsOffset;
845 shared_size = st.st_size - shared_offset;
846 shared_section = bfd_make_section_with_flags (outbfd,
849 if (shared_section == NULL
850 || ! bfd_set_section_size (outbfd, shared_section,
852 bfd_fatal (_("shared section"));
853 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
858 /* Check whether a version was given. */
859 if (!CONST_STRNEQ (version_hdr->stamp, "VeRsIoN#"))
860 non_fatal (_("warning: No version number given"));
862 /* At least for now, always create an extended header, because that
863 is what NLMLINK does. */
864 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
866 LITMEMCPY (nlm_cygnus_ext_header (outbfd)->stamp, "CyGnUsEx");
868 /* If the date was not given, force it in. */
869 if (nlm_version_header (outbfd)->month == 0
870 && nlm_version_header (outbfd)->day == 0
871 && nlm_version_header (outbfd)->year == 0)
877 ptm = localtime (&now);
878 nlm_version_header (outbfd)->month = ptm->tm_mon + 1;
879 nlm_version_header (outbfd)->day = ptm->tm_mday;
880 nlm_version_header (outbfd)->year = ptm->tm_year + 1900;
881 LITMEMCPY (version_hdr->stamp, "VeRsIoN#");
884 #ifdef NLMCONV_POWERPC
885 /* Resolve the stubs we build for PowerPC NetWare. */
886 if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
887 powerpc_resolve_stubs (inbfd, outbfd);
890 /* Copy over the sections. */
891 bfd_map_over_sections (inbfd, copy_sections, (void *) outbfd);
893 /* Finish up the header information. */
894 if (custom_file != NULL)
898 data = xmalloc (custom_size);
899 if (fread (data, 1, custom_size, custom_data) != custom_size)
900 non_fatal (_("%s: read: %s"), custom_file, strerror (errno));
903 if (! bfd_set_section_contents (outbfd, custom_section, data,
904 (file_ptr) 0, custom_size))
905 bfd_fatal (_("custom section"));
906 nlm_fixed_header (outbfd)->customDataOffset =
907 custom_section->filepos;
908 nlm_fixed_header (outbfd)->customDataSize = custom_size;
914 /* As a special hack, the backend recognizes a debugInfoOffset
915 of -1 to mean that it should not output any debugging
916 information. This can not be handling by fiddling with the
917 symbol table because exported symbols appear in both the
918 export information and the debugging information. */
919 nlm_fixed_header (outbfd)->debugInfoOffset = (file_ptr) -1;
922 non_fatal (_("warning: FULLMAP is not supported; try ld -M"));
923 if (help_file != NULL)
927 data = xmalloc (help_size);
928 if (fread (data, 1, help_size, help_data) != help_size)
929 non_fatal (_("%s: read: %s"), help_file, strerror (errno));
932 if (! bfd_set_section_contents (outbfd, help_section, data,
933 (file_ptr) 0, help_size))
934 bfd_fatal (_("help section"));
935 nlm_extended_header (outbfd)->helpFileOffset =
936 help_section->filepos;
937 nlm_extended_header (outbfd)->helpFileLength = help_size;
941 if (message_file != NULL)
945 data = xmalloc (message_size);
946 if (fread (data, 1, message_size, message_data) != message_size)
947 non_fatal (_("%s: read: %s"), message_file, strerror (errno));
950 if (! bfd_set_section_contents (outbfd, message_section, data,
951 (file_ptr) 0, message_size))
952 bfd_fatal (_("message section"));
953 nlm_extended_header (outbfd)->messageFileOffset =
954 message_section->filepos;
955 nlm_extended_header (outbfd)->messageFileLength = message_size;
957 /* FIXME: Are these offsets correct on all platforms? Are
958 they 32 bits on all platforms? What endianness? */
959 nlm_extended_header (outbfd)->languageID =
960 bfd_h_get_32 (outbfd, (bfd_byte *) data + 106);
961 nlm_extended_header (outbfd)->messageCount =
962 bfd_h_get_32 (outbfd, (bfd_byte *) data + 110);
970 struct string_list *l;
973 data = xmalloc (module_size);
975 set = (unsigned char *) data;
976 for (l = modules; l != NULL; l = l->next)
978 *set = strlen (l->string);
979 strncpy ((char *) set + 1, l->string, *set);
983 if (! bfd_set_section_contents (outbfd, module_section, data,
984 (file_ptr) 0, module_size))
985 bfd_fatal (_("module section"));
986 nlm_fixed_header (outbfd)->moduleDependencyOffset =
987 module_section->filepos;
988 nlm_fixed_header (outbfd)->numberOfModuleDependencies = c;
990 if (rpc_file != NULL)
994 data = xmalloc (rpc_size);
995 if (fread (data, 1, rpc_size, rpc_data) != rpc_size)
996 non_fatal (_("%s: read: %s"), rpc_file, strerror (errno));
999 if (! bfd_set_section_contents (outbfd, rpc_section, data,
1000 (file_ptr) 0, rpc_size))
1001 bfd_fatal (_("rpc section"));
1002 nlm_extended_header (outbfd)->RPCDataOffset =
1003 rpc_section->filepos;
1004 nlm_extended_header (outbfd)->RPCDataLength = rpc_size;
1008 if (sharelib_file != NULL)
1012 data = xmalloc (shared_size);
1013 if (fseek (shared_data, shared_offset, SEEK_SET) != 0
1014 || fread (data, 1, shared_size, shared_data) != shared_size)
1015 non_fatal (_("%s: read: %s"), sharelib_file, strerror (errno));
1018 if (! bfd_set_section_contents (outbfd, shared_section, data,
1019 (file_ptr) 0, shared_size))
1020 bfd_fatal (_("shared section"));
1022 nlm_extended_header (outbfd)->sharedCodeOffset =
1023 sharedhdr.codeImageOffset - shared_offset + shared_section->filepos;
1024 nlm_extended_header (outbfd)->sharedCodeLength =
1025 sharedhdr.codeImageSize;
1026 nlm_extended_header (outbfd)->sharedDataOffset =
1027 sharedhdr.dataImageOffset - shared_offset + shared_section->filepos;
1028 nlm_extended_header (outbfd)->sharedDataLength =
1029 sharedhdr.dataImageSize;
1030 nlm_extended_header (outbfd)->sharedRelocationFixupOffset =
1031 (sharedhdr.relocationFixupOffset
1033 + shared_section->filepos);
1034 nlm_extended_header (outbfd)->sharedRelocationFixupCount =
1035 sharedhdr.numberOfRelocationFixups;
1036 nlm_extended_header (outbfd)->sharedExternalReferenceOffset =
1037 (sharedhdr.externalReferencesOffset
1039 + shared_section->filepos);
1040 nlm_extended_header (outbfd)->sharedExternalReferenceCount =
1041 sharedhdr.numberOfExternalReferences;
1042 nlm_extended_header (outbfd)->sharedPublicsOffset =
1043 sharedhdr.publicsOffset - shared_offset + shared_section->filepos;
1044 nlm_extended_header (outbfd)->sharedPublicsCount =
1045 sharedhdr.numberOfPublics;
1046 nlm_extended_header (outbfd)->sharedDebugRecordOffset =
1047 sharedhdr.debugInfoOffset - shared_offset + shared_section->filepos;
1048 nlm_extended_header (outbfd)->sharedDebugRecordCount =
1049 sharedhdr.numberOfDebugRecords;
1050 nlm_extended_header (outbfd)->SharedInitializationOffset =
1051 sharedhdr.codeStartOffset;
1052 nlm_extended_header (outbfd)->SharedExitProcedureOffset =
1053 sharedhdr.exitProcedureOffset;
1058 const int max_len = NLM_MODULE_NAME_SIZE - 2;
1059 const char * filename = lbasename (output_file);
1061 len = strlen (filename);
1064 nlm_fixed_header (outbfd)->moduleName[0] = len;
1066 strncpy (nlm_fixed_header (outbfd)->moduleName + 1, filename, max_len);
1067 nlm_fixed_header (outbfd)->moduleName[max_len + 1] = '\0';
1069 for (modname = nlm_fixed_header (outbfd)->moduleName;
1072 *modname = TOUPPER (*modname);
1075 strncpy (nlm_variable_header (outbfd)->oldThreadName, " LONG",
1076 NLM_OLD_THREAD_NAME_LENGTH);
1078 nlm_cygnus_ext_header (outbfd)->offset = secsec->filepos;
1079 nlm_cygnus_ext_header (outbfd)->length = bfd_section_size (outbfd, secsec);
1081 if (! bfd_close (outbfd))
1082 bfd_fatal (output_file);
1083 if (! bfd_close (inbfd))
1084 bfd_fatal (input_file);
1086 if (unlink_on_exit != NULL)
1087 unlink (unlink_on_exit);
1093 /* Show a usage message and exit. */
1096 show_usage (FILE *file, int status)
1098 fprintf (file, _("Usage: %s [option(s)] [in-file [out-file]]\n"), program_name);
1099 fprintf (file, _(" Convert an object file into a NetWare Loadable Module\n"));
1100 fprintf (file, _(" The options are:\n\
1101 -I --input-target=<bfdname> Set the input binary file format\n\
1102 -O --output-target=<bfdname> Set the output binary file format\n\
1103 -T --header-file=<file> Read <file> for NLM header information\n\
1104 -l --linker=<linker> Use <linker> for any linking\n\
1105 -d --debug Display on stderr the linker command line\n\
1106 @<file> Read options from <file>.\n\
1107 -h --help Display this information\n\
1108 -v --version Display the program's version\n\
1110 if (REPORT_BUGS_TO[0] && status == 0)
1111 fprintf (file, _("Report bugs to %s\n"), REPORT_BUGS_TO);
1115 /* Select the output format based on the input architecture, machine,
1116 and endianness. This chooses the appropriate NLM target. */
1119 select_output_format (enum bfd_architecture arch, unsigned long mach,
1120 bfd_boolean bigendian ATTRIBUTE_UNUSED)
1126 return "nlm32-i386";
1128 #ifdef NLMCONV_SPARC
1129 case bfd_arch_sparc:
1130 return "nlm32-sparc";
1132 #ifdef NLMCONV_ALPHA
1133 case bfd_arch_alpha:
1134 return "nlm32-alpha";
1136 #ifdef NLMCONV_POWERPC
1137 case bfd_arch_powerpc:
1138 return "nlm32-powerpc";
1141 fatal (_("support not compiled in for %s"),
1142 bfd_printable_arch_mach (arch, mach));
1147 /* The BFD sections are copied in two passes. This function selects
1148 the output section for each input section, and sets up the section
1152 setup_sections (bfd *inbfd ATTRIBUTE_UNUSED, asection *insec, void *data_ptr)
1154 bfd *outbfd = (bfd *) data_ptr;
1156 const char *outname;
1159 bfd_size_type align;
1161 bfd_size_type secsecsize;
1163 f = bfd_get_section_flags (inbfd, insec);
1165 outname = NLM_CODE_NAME;
1166 else if ((f & SEC_LOAD) && (f & SEC_HAS_CONTENTS))
1167 outname = NLM_INITIALIZED_DATA_NAME;
1168 else if (f & SEC_ALLOC)
1169 outname = NLM_UNINITIALIZED_DATA_NAME;
1171 outname = bfd_section_name (inbfd, insec);
1173 outsec = bfd_get_section_by_name (outbfd, outname);
1176 outsec = bfd_make_section (outbfd, outname);
1178 bfd_fatal (_("make section"));
1181 insec->output_section = outsec;
1183 offset = bfd_section_size (outbfd, outsec);
1184 align = 1 << bfd_section_alignment (inbfd, insec);
1185 add = ((offset + align - 1) &~ (align - 1)) - offset;
1186 insec->output_offset = offset + add;
1188 if (! bfd_set_section_size (outbfd, outsec,
1189 (bfd_section_size (outbfd, outsec)
1190 + bfd_section_size (inbfd, insec)
1192 bfd_fatal (_("set section size"));
1194 if ((bfd_section_alignment (inbfd, insec)
1195 > bfd_section_alignment (outbfd, outsec))
1196 && ! bfd_set_section_alignment (outbfd, outsec,
1197 bfd_section_alignment (inbfd, insec)))
1198 bfd_fatal (_("set section alignment"));
1200 if (! bfd_set_section_flags (outbfd, outsec,
1201 f | bfd_get_section_flags (outbfd, outsec)))
1202 bfd_fatal (_("set section flags"));
1204 bfd_set_reloc (outbfd, outsec, (arelent **) NULL, 0);
1206 /* For each input section we allocate space for an entry in
1208 secsecsize = bfd_section_size (outbfd, secsec);
1209 secsecsize += strlen (bfd_section_name (inbfd, insec)) + 1;
1210 secsecsize = (secsecsize + 3) &~ 3;
1212 if (! bfd_set_section_size (outbfd, secsec, secsecsize))
1213 bfd_fatal (_("set .nlmsections size"));
1216 /* Copy the section contents. */
1219 copy_sections (bfd *inbfd, asection *insec, void *data_ptr)
1221 static bfd_size_type secsecoff = 0;
1222 bfd *outbfd = (bfd *) data_ptr;
1231 inname = bfd_section_name (inbfd, insec);
1233 outsec = insec->output_section;
1234 assert (outsec != NULL);
1236 size = bfd_get_section_size (insec);
1238 if ((bfd_get_section_flags (inbfd, insec) & SEC_HAS_CONTENTS) == 0)
1242 contents = xmalloc (size);
1243 if (! bfd_get_section_contents (inbfd, insec, contents,
1244 (file_ptr) 0, size))
1245 bfd_fatal (bfd_get_filename (inbfd));
1248 reloc_size = bfd_get_reloc_upper_bound (inbfd, insec);
1250 bfd_fatal (bfd_get_filename (inbfd));
1251 if (reloc_size != 0)
1256 relocs = (arelent **) xmalloc (reloc_size);
1257 reloc_count = bfd_canonicalize_reloc (inbfd, insec, relocs, symbols);
1258 if (reloc_count < 0)
1259 bfd_fatal (bfd_get_filename (inbfd));
1260 mangle_relocs (outbfd, insec, &relocs, &reloc_count, (char *) contents,
1263 /* FIXME: refers to internal BFD fields. */
1264 if (outsec->orelocation != (arelent **) NULL)
1266 bfd_size_type total_count;
1269 total_count = reloc_count + outsec->reloc_count;
1270 combined = (arelent **) xmalloc (total_count * sizeof (arelent *));
1271 memcpy (combined, outsec->orelocation,
1272 outsec->reloc_count * sizeof (arelent *));
1273 memcpy (combined + outsec->reloc_count, relocs,
1274 (size_t) (reloc_count * sizeof (arelent *)));
1275 free (outsec->orelocation);
1276 reloc_count = total_count;
1280 bfd_set_reloc (outbfd, outsec, relocs, reloc_count);
1283 if (contents != NULL)
1285 if (! bfd_set_section_contents (outbfd, outsec, contents,
1286 insec->output_offset, size))
1287 bfd_fatal (bfd_get_filename (outbfd));
1291 /* Add this section to .nlmsections. */
1292 if (! bfd_set_section_contents (outbfd, secsec, (void *) inname, secsecoff,
1293 strlen (inname) + 1))
1294 bfd_fatal (_("set .nlmsection contents"));
1295 secsecoff += strlen (inname) + 1;
1297 add = ((secsecoff + 3) &~ 3) - secsecoff;
1300 bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
1301 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, add))
1302 bfd_fatal (_("set .nlmsection contents"));
1306 if (contents != NULL)
1307 bfd_h_put_32 (outbfd, (bfd_vma) outsec->filepos, buf);
1309 bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
1310 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
1311 bfd_fatal (_("set .nlmsection contents"));
1314 bfd_h_put_32 (outbfd, (bfd_vma) size, buf);
1315 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
1316 bfd_fatal (_("set .nlmsection contents"));
1320 /* Some, perhaps all, NetWare targets require changing the relocs used
1321 by the input formats. */
1324 mangle_relocs (bfd *outbfd, asection *insec, arelent ***relocs_ptr,
1325 long *reloc_count_ptr, char *contents,
1326 bfd_size_type contents_size)
1328 switch (bfd_get_arch (outbfd))
1332 i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1333 contents, contents_size);
1336 #ifdef NLMCONV_ALPHA
1337 case bfd_arch_alpha:
1338 alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1339 contents, contents_size);
1342 #ifdef NLMCONV_POWERPC
1343 case bfd_arch_powerpc:
1344 powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1345 contents, contents_size);
1349 default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1350 contents, contents_size);
1355 /* By default all we need to do for relocs is change the address by
1356 the output_offset. */
1359 default_mangle_relocs (bfd *outbfd ATTRIBUTE_UNUSED, asection *insec,
1360 arelent ***relocs_ptr, long *reloc_count_ptr,
1361 char *contents ATTRIBUTE_UNUSED,
1362 bfd_size_type contents_size ATTRIBUTE_UNUSED)
1364 if (insec->output_offset != 0)
1370 reloc_count = *reloc_count_ptr;
1371 relocs = *relocs_ptr;
1372 for (i = 0; i < reloc_count; i++, relocs++)
1373 (*relocs)->address += insec->output_offset;
1379 /* NetWare on the i386 supports a restricted set of relocs, which are
1380 different from those used on other i386 targets. This routine
1381 converts the relocs. It is, obviously, very target dependent. At
1382 the moment, the nlm32-i386 backend performs similar translations;
1383 however, it is more reliable and efficient to do them here. */
1385 static reloc_howto_type nlm_i386_pcrel_howto =
1386 HOWTO (1, /* type */
1388 2, /* size (0 = byte, 1 = short, 2 = long) */
1390 TRUE, /* pc_relative */
1392 complain_overflow_signed, /* complain_on_overflow */
1393 0, /* special_function */
1394 "DISP32", /* name */
1395 TRUE, /* partial_inplace */
1396 0xffffffff, /* src_mask */
1397 0xffffffff, /* dst_mask */
1398 TRUE); /* pcrel_offset */
1401 i386_mangle_relocs (bfd *outbfd, asection *insec, arelent ***relocs_ptr,
1402 long *reloc_count_ptr, char *contents,
1403 bfd_size_type contents_size)
1405 long reloc_count, i;
1408 reloc_count = *reloc_count_ptr;
1409 relocs = *relocs_ptr;
1410 for (i = 0; i < reloc_count; i++)
1414 bfd_size_type address;
1418 /* PR 17512: file: 057f89c1. */
1419 if (rel->sym_ptr_ptr == NULL)
1421 sym = *rel->sym_ptr_ptr;
1423 /* We're moving the relocs from the input section to the output
1424 section, so we must adjust the address accordingly. */
1425 address = rel->address;
1426 rel->address += insec->output_offset;
1428 /* Note that no serious harm will ensue if we fail to change a
1429 reloc. The backend will fail when writing out the reloc. */
1431 /* Make sure this reloc is within the data we have. We use only
1432 4 byte relocs here, so we insist on having 4 bytes. */
1433 if (address + 4 > contents_size)
1436 /* A PC relative reloc entirely within a single section is
1437 completely unnecessary. This can be generated by ld -r. */
1438 if (sym == insec->symbol
1439 && rel->howto != NULL
1440 && rel->howto->pc_relative
1441 && ! rel->howto->pcrel_offset)
1445 memmove (relocs, relocs + 1,
1446 (size_t) ((reloc_count - i) * sizeof (arelent *)));
1450 /* Get the amount the relocation will add in. */
1451 addend = rel->addend + sym->value;
1453 /* NetWare doesn't support PC relative relocs against defined
1454 symbols, so we have to eliminate them by doing the relocation
1455 now. We can only do this if the reloc is within a single
1457 if (rel->howto != NULL
1458 && rel->howto->pc_relative
1459 && bfd_get_section (sym) == insec->output_section)
1463 if (rel->howto->pcrel_offset)
1466 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1468 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1472 memmove (relocs, relocs + 1,
1473 (size_t) ((reloc_count - i) * sizeof (arelent *)));
1477 /* NetWare doesn't support reloc addends, so we get rid of them
1478 here by simply adding them into the object data. We handle
1479 the symbol value, if any, the same way. */
1481 && rel->howto != NULL
1482 && rel->howto->rightshift == 0
1483 && rel->howto->size == 2
1484 && rel->howto->bitsize == 32
1485 && rel->howto->bitpos == 0
1486 && rel->howto->src_mask == 0xffffffff
1487 && rel->howto->dst_mask == 0xffffffff)
1491 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1493 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1495 /* Adjust the reloc for the changes we just made. */
1497 if (! bfd_is_und_section (bfd_get_section (sym)))
1498 rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
1501 /* NetWare uses a reloc with pcrel_offset set. We adjust
1502 pc_relative relocs accordingly. We are going to change the
1503 howto field, so we can only do this if the current one is
1504 compatible. We should check that special_function is NULL
1505 here, but at the moment coff-i386 uses a special_function
1506 which does not affect what we are doing here. */
1507 if (rel->howto != NULL
1508 && rel->howto->pc_relative
1509 && ! rel->howto->pcrel_offset
1510 && rel->howto->rightshift == 0
1511 && rel->howto->size == 2
1512 && rel->howto->bitsize == 32
1513 && rel->howto->bitpos == 0
1514 && rel->howto->src_mask == 0xffffffff
1515 && rel->howto->dst_mask == 0xffffffff)
1519 /* When pcrel_offset is not set, it means that the negative
1520 of the address of the memory location is stored in the
1521 memory location. We must add it back in. */
1522 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1524 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1526 /* We must change to a new howto. */
1527 rel->howto = &nlm_i386_pcrel_howto;
1532 #endif /* NLMCONV_I386 */
1534 #ifdef NLMCONV_ALPHA
1536 /* On the Alpha the first reloc for every section must be a special
1537 relocs which hold the GP address. Also, the first reloc in the
1538 file must be a special reloc which holds the address of the .lita
1541 static reloc_howto_type nlm32_alpha_nw_howto =
1542 HOWTO (ALPHA_R_NW_RELOC, /* type */
1544 0, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE, /* pc_relative */
1548 complain_overflow_dont, /* complain_on_overflow */
1549 0, /* special_function */
1550 "NW_RELOC", /* name */
1551 FALSE, /* partial_inplace */
1554 FALSE); /* pcrel_offset */
1557 alpha_mangle_relocs (bfd *outbfd, asection *insec,
1558 arelent ***relocs_ptr, long *reloc_count_ptr,
1559 char *contents ATTRIBUTE_UNUSED,
1560 bfd_size_type contents_size ATTRIBUTE_UNUSED)
1562 long old_reloc_count;
1563 arelent **old_relocs;
1566 old_reloc_count = *reloc_count_ptr;
1567 old_relocs = *relocs_ptr;
1568 relocs = (arelent **) xmalloc ((old_reloc_count + 3) * sizeof (arelent *));
1569 *relocs_ptr = relocs;
1571 if (nlm_alpha_backend_data (outbfd)->lita_address == 0)
1574 asection *lita_section;
1576 inbfd = insec->owner;
1577 lita_section = bfd_get_section_by_name (inbfd, _LITA);
1578 if (lita_section != (asection *) NULL)
1580 nlm_alpha_backend_data (outbfd)->lita_address =
1581 bfd_get_section_vma (inbfd, lita_section);
1582 nlm_alpha_backend_data (outbfd)->lita_size =
1583 bfd_section_size (inbfd, lita_section);
1587 /* Avoid outputting this reloc again. */
1588 nlm_alpha_backend_data (outbfd)->lita_address = 4;
1591 *relocs = (arelent *) xmalloc (sizeof (arelent));
1592 (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1593 (*relocs)->address = nlm_alpha_backend_data (outbfd)->lita_address;
1594 (*relocs)->addend = nlm_alpha_backend_data (outbfd)->lita_size + 1;
1595 (*relocs)->howto = &nlm32_alpha_nw_howto;
1597 ++(*reloc_count_ptr);
1600 /* Get the GP value from bfd. */
1601 if (nlm_alpha_backend_data (outbfd)->gp == 0)
1602 nlm_alpha_backend_data (outbfd)->gp =
1603 bfd_ecoff_get_gp_value (insec->owner);
1605 *relocs = (arelent *) xmalloc (sizeof (arelent));
1606 (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1607 (*relocs)->address = nlm_alpha_backend_data (outbfd)->gp;
1608 (*relocs)->addend = 0;
1609 (*relocs)->howto = &nlm32_alpha_nw_howto;
1611 ++(*reloc_count_ptr);
1613 memcpy (relocs, old_relocs, (size_t) old_reloc_count * sizeof (arelent *));
1614 relocs[old_reloc_count] = (arelent *) NULL;
1618 if (insec->output_offset != 0)
1622 for (i = 0; i < (bfd_size_type) old_reloc_count; i++, relocs++)
1623 (*relocs)->address += insec->output_offset;
1627 #endif /* NLMCONV_ALPHA */
1629 #ifdef NLMCONV_POWERPC
1631 /* We keep a linked list of stubs which we must build. Because BFD
1632 requires us to know the sizes of all sections before we can set the
1633 contents of any, we must figure out which stubs we want to build
1634 before we can actually build any of them. */
1638 /* Next stub in linked list. */
1639 struct powerpc_stub *next;
1641 /* Symbol whose value is the start of the stub. This is a symbol
1642 whose name begins with `.'. */
1645 /* Symbol we are going to create a reloc against. This is a symbol
1646 with the same name as START but without the leading `.'. */
1649 /* The TOC index for this stub. This is the index into the TOC
1650 section at which the reloc is created. */
1651 unsigned int toc_index;
1654 /* The linked list of stubs. */
1656 static struct powerpc_stub *powerpc_stubs;
1658 /* This is what a stub looks like. The first instruction will get
1659 adjusted with the correct TOC index. */
1661 static unsigned long powerpc_stub_insns[] =
1663 0x81820000, /* lwz r12,0(r2) */
1664 0x90410014, /* stw r2,20(r1) */
1665 0x800c0000, /* lwz r0,0(r12) */
1666 0x804c0004, /* lwz r2,r(r12) */
1667 0x7c0903a6, /* mtctr r0 */
1668 0x4e800420, /* bctr */
1669 0, /* Traceback table. */
1674 #define POWERPC_STUB_INSN_COUNT \
1675 (sizeof powerpc_stub_insns / sizeof powerpc_stub_insns[0])
1677 #define POWERPC_STUB_SIZE (4 * POWERPC_STUB_INSN_COUNT)
1679 /* Each stub uses a four byte TOC entry. */
1680 #define POWERPC_STUB_TOC_ENTRY_SIZE (4)
1682 /* The original size of the .got section. */
1683 static bfd_size_type powerpc_initial_got_size;
1685 /* Look for all undefined symbols beginning with `.', and prepare to
1686 build a stub for each one. */
1689 powerpc_build_stubs (bfd *inbfd, bfd *outbfd ATTRIBUTE_UNUSED,
1690 asymbol ***symbols_ptr, long *symcount_ptr)
1694 unsigned int got_base;
1699 /* Make a section to hold stubs. We don't set SEC_HAS_CONTENTS for
1700 the section to prevent copy_sections from reading from it. */
1701 stub_sec = bfd_make_section_with_flags (inbfd, ".stubs",
1706 if (stub_sec == (asection *) NULL
1707 || ! bfd_set_section_alignment (inbfd, stub_sec, 2))
1708 bfd_fatal (".stubs");
1710 /* Get the TOC section, which is named .got. */
1711 got_sec = bfd_get_section_by_name (inbfd, ".got");
1712 if (got_sec == (asection *) NULL)
1714 got_sec = bfd_make_section_with_flags (inbfd, ".got",
1719 | SEC_HAS_CONTENTS));
1720 if (got_sec == (asection *) NULL
1721 || ! bfd_set_section_alignment (inbfd, got_sec, 2))
1725 powerpc_initial_got_size = bfd_section_size (inbfd, got_sec);
1726 got_base = powerpc_initial_got_size;
1727 got_base = (got_base + 3) &~ 3;
1731 symcount = *symcount_ptr;
1732 for (i = 0; i < symcount; i++)
1737 struct powerpc_stub *item;
1739 sym = (*symbols_ptr)[i];
1741 /* We must make a stub for every undefined symbol whose name
1743 if (bfd_asymbol_name (sym)[0] != '.'
1744 || ! bfd_is_und_section (bfd_get_section (sym)))
1747 /* Make a new undefined symbol with the same name but without
1749 newsym = xmalloc (sizeof (asymbol));
1751 newname = xmalloc (strlen (bfd_asymbol_name (sym)));
1752 strcpy (newname, bfd_asymbol_name (sym) + 1);
1753 newsym->name = newname;
1755 /* Define the `.' symbol to be in the stub section. */
1756 sym->section = stub_sec;
1757 sym->value = stubcount * POWERPC_STUB_SIZE;
1758 /* We set the BSF_DYNAMIC flag here so that we can check it when
1759 we are mangling relocs. FIXME: This is a hack. */
1760 sym->flags = BSF_LOCAL | BSF_DYNAMIC;
1762 /* Add this stub to the linked list. */
1763 item = (struct powerpc_stub *) xmalloc (sizeof (struct powerpc_stub));
1765 item->reloc = newsym;
1766 item->toc_index = got_base + stubcount * POWERPC_STUB_TOC_ENTRY_SIZE;
1768 item->next = powerpc_stubs;
1769 powerpc_stubs = item;
1777 struct powerpc_stub *l;
1779 /* Add the new symbols we just created to the symbol table. */
1780 *symbols_ptr = (asymbol **) xrealloc ((char *) *symbols_ptr,
1781 ((symcount + stubcount)
1782 * sizeof (asymbol)));
1783 *symcount_ptr += stubcount;
1784 s = &(*symbols_ptr)[symcount];
1785 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1788 /* Set the size of the .stubs section and increase the size of
1789 the .got section. */
1790 if (! bfd_set_section_size (inbfd, stub_sec,
1791 stubcount * POWERPC_STUB_SIZE)
1792 || ! bfd_set_section_size (inbfd, got_sec,
1795 * POWERPC_STUB_TOC_ENTRY_SIZE))))
1796 bfd_fatal (_("stub section sizes"));
1800 /* Resolve all the stubs for PowerPC NetWare. We fill in the contents
1801 of the output section, and create new relocs in the TOC. */
1804 powerpc_resolve_stubs (bfd *inbfd, bfd *outbfd)
1806 bfd_byte buf[POWERPC_STUB_SIZE];
1808 unsigned int stubcount;
1812 struct powerpc_stub *l;
1814 if (powerpc_stubs == (struct powerpc_stub *) NULL)
1817 for (i = 0; i < POWERPC_STUB_INSN_COUNT; i++)
1818 bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[i], buf + i * 4);
1820 got_sec = bfd_get_section_by_name (inbfd, ".got");
1821 assert (got_sec != (asection *) NULL);
1822 assert (got_sec->output_section->orelocation == (arelent **) NULL);
1825 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1827 relocs = (arelent **) xmalloc (stubcount * sizeof (arelent *));
1830 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1834 /* Adjust the first instruction to use the right TOC index. */
1835 bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[0] + l->toc_index, buf);
1837 /* Write this stub out. */
1838 if (! bfd_set_section_contents (outbfd,
1839 bfd_get_section (l->start),
1843 bfd_fatal (_("writing stub"));
1845 /* Create a new reloc for the TOC entry. */
1846 reloc = (arelent *) xmalloc (sizeof (arelent));
1847 reloc->sym_ptr_ptr = &l->reloc;
1848 reloc->address = l->toc_index + got_sec->output_offset;
1850 reloc->howto = bfd_reloc_type_lookup (inbfd, BFD_RELOC_32);
1855 bfd_set_reloc (outbfd, got_sec->output_section, relocs, stubcount);
1858 /* Adjust relocation entries for PowerPC NetWare. We do not output
1859 TOC relocations. The object code already contains the offset from
1860 the TOC pointer. When the function is called, the TOC register,
1861 r2, will be set to the correct TOC value, so there is no need for
1862 any further reloc. */
1865 powerpc_mangle_relocs (bfd *outbfd, asection *insec,
1866 arelent ***relocs_ptr,
1867 long *reloc_count_ptr, char *contents,
1868 bfd_size_type contents_size ATTRIBUTE_UNUSED)
1870 reloc_howto_type *toc_howto;
1875 toc_howto = bfd_reloc_type_lookup (insec->owner, BFD_RELOC_PPC_TOC16);
1876 if (toc_howto == (reloc_howto_type *) NULL)
1877 fatal (_("Unable to locate PPC_TOC16 reloc information"));
1879 /* If this is the .got section, clear out all the contents beyond
1880 the initial size. We must do this here because copy_sections is
1881 going to write out whatever we return in the contents field. */
1882 if (strcmp (bfd_get_section_name (insec->owner, insec), ".got") == 0)
1883 memset (contents + powerpc_initial_got_size, 0,
1884 (size_t) (bfd_get_section_size (insec) - powerpc_initial_got_size));
1886 reloc_count = *reloc_count_ptr;
1887 relocs = *relocs_ptr;
1888 for (i = 0; i < reloc_count; i++)
1895 sym = *rel->sym_ptr_ptr;
1897 /* Convert any relocs against the .bss section into relocs
1898 against the .data section. */
1899 if (strcmp (bfd_get_section_name (outbfd, bfd_get_section (sym)),
1900 NLM_UNINITIALIZED_DATA_NAME) == 0)
1904 datasec = bfd_get_section_by_name (outbfd,
1905 NLM_INITIALIZED_DATA_NAME);
1906 if (datasec != NULL)
1908 rel->addend += (bfd_get_section_vma (outbfd,
1909 bfd_get_section (sym))
1911 rel->sym_ptr_ptr = datasec->symbol_ptr_ptr;
1912 sym = *rel->sym_ptr_ptr;
1916 /* PR 17512: file: 70cfde95. */
1917 if (rel->howto == NULL)
1920 /* We must be able to resolve all PC relative relocs at this
1921 point. If we get a branch to an undefined symbol we build a
1922 stub, since NetWare will resolve undefined symbols into a
1923 pointer to a function descriptor. */
1924 if (rel->howto->pc_relative)
1926 /* This check for whether a symbol is in the same section as
1927 the reloc will be wrong if there is a PC relative reloc
1928 between two sections both of which were placed in the
1929 same output section. This should not happen. */
1930 if (bfd_get_section (sym) != insec->output_section)
1931 non_fatal (_("unresolved PC relative reloc against %s"),
1932 bfd_asymbol_name (sym));
1937 if (rel->address > contents_size - 4)
1939 non_fatal (_("Out of range relocation: %lx"), rel->address);
1943 assert (rel->howto->size == 2 && rel->howto->pcrel_offset);
1944 val = bfd_get_32 (outbfd, (bfd_byte *) contents + rel->address);
1945 val = ((val &~ rel->howto->dst_mask)
1946 | (((val & rel->howto->src_mask)
1947 + (sym->value - rel->address)
1949 & rel->howto->dst_mask));
1950 bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
1952 /* If this reloc is against an stubbed symbol and the
1955 then we replace the next instruction with
1957 This reloads the TOC pointer after a stub call. */
1958 if (bfd_asymbol_name (sym)[0] == '.'
1959 && (sym->flags & BSF_DYNAMIC) != 0
1960 && (bfd_get_32 (outbfd,
1961 (bfd_byte *) contents + rel->address + 4)
1962 == 0x4ffffb82)) /* cror 31,31,31 */
1963 bfd_put_32 (outbfd, (bfd_vma) 0x80410014, /* lwz r2,20(r1) */
1964 (bfd_byte *) contents + rel->address + 4);
1968 memmove (relocs, relocs + 1,
1969 (size_t) ((reloc_count - 1) * sizeof (arelent *)));
1974 /* When considering a TOC reloc, we do not want to include the
1975 symbol value. The symbol will be start of the TOC section
1976 (which is named .got). We do want to include the addend. */
1977 if (rel->howto == toc_howto)
1980 sym_value = sym->value;
1982 /* If this is a relocation against a symbol with a value, or
1983 there is a reloc addend, we need to update the addend in the
1985 if (sym_value + rel->addend != 0)
1989 switch (rel->howto->size)
1992 if (rel->address > contents_size - 2)
1994 non_fatal (_("Out of range relocation: %lx"), rel->address);
1998 val = bfd_get_16 (outbfd,
1999 (bfd_byte *) contents + rel->address);
2000 val = ((val &~ rel->howto->dst_mask)
2001 | (((val & rel->howto->src_mask)
2004 & rel->howto->dst_mask));
2005 if ((bfd_signed_vma) val < - 0x8000
2006 || (bfd_signed_vma) val >= 0x8000)
2007 non_fatal (_("overflow when adjusting relocation against %s"),
2008 bfd_asymbol_name (sym));
2009 bfd_put_16 (outbfd, val, (bfd_byte *) contents + rel->address);
2013 /* PR 17512: file: 0455a112. */
2014 if (rel->address > contents_size - 4)
2016 non_fatal (_("Out of range relocation: %lx"), rel->address);
2020 val = bfd_get_32 (outbfd,
2021 (bfd_byte *) contents + rel->address);
2022 val = ((val &~ rel->howto->dst_mask)
2023 | (((val & rel->howto->src_mask)
2026 & rel->howto->dst_mask));
2027 bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
2031 fatal (_("Unsupported relocation size: %d"), rel->howto->size);
2034 if (! bfd_is_und_section (bfd_get_section (sym)))
2035 rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
2039 /* Now that we have incorporated the addend, remove any TOC
2041 if (rel->howto == toc_howto)
2045 memmove (relocs, relocs + 1,
2046 (size_t) ((reloc_count - i) * sizeof (arelent *)));
2050 rel->address += insec->output_offset;
2054 #endif /* NLMCONV_POWERPC */
2056 /* Name of linker. */
2058 #define LD_NAME "ld"
2061 /* The user has specified several input files. Invoke the linker to
2062 link them all together, and convert and delete the resulting output
2066 link_inputs (struct string_list *inputs, char *ld, char * mfile)
2069 struct string_list *q;
2078 for (q = inputs; q != NULL; q = q->next)
2081 argv = (char **) alloca ((c + 7) * sizeof (char *));
2088 /* Find the linker to invoke based on how nlmconv was run. */
2089 p = program_name + strlen (program_name);
2090 while (p != program_name)
2094 ld = (char *) xmalloc (p - program_name + strlen (LD_NAME) + 1);
2095 memcpy (ld, program_name, p - program_name);
2096 strcpy (ld + (p - program_name), LD_NAME);
2105 ld = (char *) LD_NAME;
2107 unlink_on_exit = make_temp_file (".O");
2110 argv[1] = (char *) "-Ur";
2111 argv[2] = (char *) "-o";
2112 argv[3] = unlink_on_exit;
2113 /* If we have been given the name of a mapfile and that
2114 name is not 'stderr' then pass it on to the linker. */
2117 && strcmp (mfile, "stderr") == 0)
2119 argv[4] = (char *) "-Map";
2126 for (q = inputs; q != NULL; q = q->next, i++)
2127 argv[i] = q->string;
2132 for (i = 0; argv[i] != NULL; i++)
2133 fprintf (stderr, " %s", argv[i]);
2134 fprintf (stderr, "\n");
2137 pid = pexecute (ld, argv, program_name, (char *) NULL, &errfmt, &errarg,
2138 PEXECUTE_SEARCH | PEXECUTE_ONE);
2141 fprintf (stderr, _("%s: execution of %s failed: "), program_name, ld);
2142 fprintf (stderr, errfmt, errarg);
2143 unlink (unlink_on_exit);
2147 if (pwait (pid, &status, 0) < 0)
2150 unlink (unlink_on_exit);
2156 non_fatal (_("Execution of %s failed"), ld);
2157 unlink (unlink_on_exit);
2161 return unlink_on_exit;