1 /* nlmconv.c -- NLM conversion program
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
5 This file is part of GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
21 /* Written by Ian Lance Taylor <ian@cygnus.com>.
23 This program can be used to convert any appropriate object file
24 into a NetWare Loadable Module (an NLM). It will accept a linker
25 specification file which is identical to that accepted by the
26 NetWare linker, NLMLINK. */
28 /* AIX requires this to be the first thing in the file. */
36 #include "libiberty.h"
38 #include "safe-ctype.h"
47 /* Internal BFD NLM header. */
53 #include "coff/ecoff.h"
56 /* If strerror is just a macro, we want to use the one from libiberty
57 since it will handle undefined values. */
59 extern char *strerror (int);
71 /* Global variables. */
73 /* The name used to invoke the program. */
76 /* Local variables. */
78 /* Whether to print out debugging information (currently just controls
79 whether it prints the linker command if there is one). */
82 /* The symbol table. */
83 static asymbol **symbols;
85 /* A section we create in the output file to hold pointers to where
86 the sections of the input file end up. We will put a pointer to
87 this section in the NLM header. These is an entry for each input
88 section. The format is
89 null terminated section name
90 zeroes to adjust to 4 byte boundary
91 4 byte section data file pointer
93 We don't need a version number. The way we find this information
94 is by finding a stamp in the NLM header information. If we need to
95 change the format of this information, we can simply change the
97 static asection *secsec;
99 /* A temporary file name to be unlinked on exit. Actually, for most
100 errors, we leave it around. It's not clear whether that is helpful
102 static char *unlink_on_exit;
104 /* The list of long options. */
105 static struct option long_options[] =
107 { "debug", no_argument, 0, 'd' },
108 { "header-file", required_argument, 0, 'T' },
109 { "help", no_argument, 0, 'h' },
110 { "input-target", required_argument, 0, 'I' },
111 { "input-format", required_argument, 0, 'I' }, /* Obsolete */
112 { "linker", required_argument, 0, 'l' },
113 { "output-target", required_argument, 0, 'O' },
114 { "output-format", required_argument, 0, 'O' }, /* Obsolete */
115 { "version", no_argument, 0, 'V' },
116 { NULL, no_argument, 0, 0 }
119 /* Local routines. */
121 int main (int, char **);
123 static void show_usage (FILE *, int);
124 static const char *select_output_format
125 (enum bfd_architecture, unsigned long, bfd_boolean);
126 static void setup_sections (bfd *, asection *, void *);
127 static void copy_sections (bfd *, asection *, void *);
128 static void mangle_relocs
129 (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
130 static void default_mangle_relocs
131 (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
132 static char *link_inputs (struct string_list *, char *, char *);
135 static void i386_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
139 static void alpha_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
142 #ifdef NLMCONV_POWERPC
143 static void powerpc_build_stubs (bfd *, bfd *, asymbol ***, long *);
144 static void powerpc_resolve_stubs (bfd *, bfd *);
145 static void powerpc_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
148 /* The main routine. */
151 main (int argc, char **argv)
154 char *input_file = NULL;
155 const char *input_format = NULL;
156 const char *output_format = NULL;
157 const char *header_file = NULL;
159 Nlm_Internal_Fixed_Header fixed_hdr_struct;
160 Nlm_Internal_Variable_Header var_hdr_struct;
161 Nlm_Internal_Version_Header version_hdr_struct;
162 Nlm_Internal_Copyright_Header copyright_hdr_struct;
163 Nlm_Internal_Extended_Header extended_hdr_struct;
166 asymbol **newsyms, **outsyms;
167 long symcount, newsymalloc, newsymcount;
169 asection *text_sec, *bss_sec, *data_sec;
174 char inlead, outlead;
175 bfd_boolean gotstart, gotexit, gotcheck;
177 FILE *custom_data = NULL;
178 FILE *help_data = NULL;
179 FILE *message_data = NULL;
180 FILE *rpc_data = NULL;
181 FILE *shared_data = NULL;
182 size_t custom_size = 0;
183 size_t help_size = 0;
184 size_t message_size = 0;
185 size_t module_size = 0;
187 asection *custom_section = NULL;
188 asection *help_section = NULL;
189 asection *message_section = NULL;
190 asection *module_section = NULL;
191 asection *rpc_section = NULL;
192 asection *shared_section = NULL;
194 size_t shared_offset = 0;
195 size_t shared_size = 0;
196 static Nlm_Internal_Fixed_Header sharedhdr;
201 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
202 setlocale (LC_MESSAGES, "");
204 #if defined (HAVE_SETLOCALE)
205 setlocale (LC_CTYPE, "");
207 bindtextdomain (PACKAGE, LOCALEDIR);
208 textdomain (PACKAGE);
210 program_name = argv[0];
211 xmalloc_set_program_name (program_name);
213 expandargv (&argc, &argv);
216 set_default_bfd_target ();
218 while ((opt = getopt_long (argc, argv, "dHhI:l:O:T:Vv", long_options,
229 show_usage (stdout, 0);
232 input_format = optarg;
238 output_format = optarg;
241 header_file = optarg;
245 print_version ("nlmconv");
250 show_usage (stderr, 1);
255 /* The input and output files may be named on the command line. */
259 input_file = argv[optind];
263 output_file = argv[optind];
266 show_usage (stderr, 1);
267 if (strcmp (input_file, output_file) == 0)
269 fatal (_("input and output files must be different"));
274 /* Initialize the header information to default values. */
275 fixed_hdr = &fixed_hdr_struct;
276 memset ((void *) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct);
277 var_hdr = &var_hdr_struct;
278 memset ((void *) &var_hdr_struct, 0, sizeof var_hdr_struct);
279 version_hdr = &version_hdr_struct;
280 memset ((void *) &version_hdr_struct, 0, sizeof version_hdr_struct);
281 copyright_hdr = ©right_hdr_struct;
282 memset ((void *) ©right_hdr_struct, 0, sizeof copyright_hdr_struct);
283 extended_hdr = &extended_hdr_struct;
284 memset ((void *) &extended_hdr_struct, 0, sizeof extended_hdr_struct);
285 check_procedure = NULL;
288 exit_procedure = "_Stop";
289 export_symbols = NULL;
293 import_symbols = NULL;
296 sharelib_file = NULL;
297 start_procedure = "_Prelude";
303 /* Parse the header file (if there is one). */
304 if (header_file != NULL)
306 if (! nlmlex_file (header_file)
308 || parse_errors != 0)
312 if (input_files != NULL)
314 if (input_file != NULL)
316 fatal (_("input file named both on command line and with INPUT"));
318 if (input_files->next == NULL)
319 input_file = input_files->string;
321 input_file = link_inputs (input_files, ld_arg, map_file);
323 else if (input_file == NULL)
325 non_fatal (_("no input file"));
326 show_usage (stderr, 1);
329 inbfd = bfd_openr (input_file, input_format);
331 bfd_fatal (input_file);
333 if (! bfd_check_format_matches (inbfd, bfd_object, &matching))
335 bfd_nonfatal (input_file);
336 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
338 list_matching_formats (matching);
344 if (output_format == NULL)
345 output_format = select_output_format (bfd_get_arch (inbfd),
346 bfd_get_mach (inbfd),
347 bfd_big_endian (inbfd));
349 assert (output_format != NULL);
351 /* Use the output file named on the command line if it exists.
352 Otherwise use the file named in the OUTPUT statement. */
353 if (output_file == NULL)
355 non_fatal (_("no name for output file"));
356 show_usage (stderr, 1);
359 outbfd = bfd_openw (output_file, output_format);
361 bfd_fatal (output_file);
362 if (! bfd_set_format (outbfd, bfd_object))
363 bfd_fatal (output_file);
365 assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour);
367 /* XXX: Should we accept the unknown bfd format here ? */
368 if (bfd_arch_get_compatible (inbfd, outbfd, TRUE) == NULL)
369 non_fatal (_("warning: input and output formats are not compatible"));
371 /* Move the values read from the command file into outbfd. */
372 *nlm_fixed_header (outbfd) = fixed_hdr_struct;
373 *nlm_variable_header (outbfd) = var_hdr_struct;
374 *nlm_version_header (outbfd) = version_hdr_struct;
375 *nlm_copyright_header (outbfd) = copyright_hdr_struct;
376 *nlm_extended_header (outbfd) = extended_hdr_struct;
378 /* Start copying the input BFD to the output BFD. */
379 if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd)))
380 bfd_fatal (bfd_get_filename (outbfd));
382 symsize = bfd_get_symtab_upper_bound (inbfd);
384 bfd_fatal (input_file);
385 symbols = (asymbol **) xmalloc (symsize);
386 symcount = bfd_canonicalize_symtab (inbfd, symbols);
388 bfd_fatal (input_file);
390 /* Make sure we have a .bss section. */
391 bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME);
394 bss_sec = bfd_make_section (outbfd, NLM_UNINITIALIZED_DATA_NAME);
396 || ! bfd_set_section_flags (outbfd, bss_sec, SEC_ALLOC)
397 || ! bfd_set_section_alignment (outbfd, bss_sec, 1))
398 bfd_fatal (_("make .bss section"));
401 /* We store the original section names in the .nlmsections section,
402 so that programs which understand it can resurrect the original
403 sections from the NLM. We will put a pointer to .nlmsections in
404 the NLM header area. */
405 secsec = bfd_make_section (outbfd, ".nlmsections");
407 bfd_fatal (_("make .nlmsections section"));
408 if (! bfd_set_section_flags (outbfd, secsec, SEC_HAS_CONTENTS))
409 bfd_fatal (_("set .nlmsections flags"));
411 #ifdef NLMCONV_POWERPC
412 /* For PowerPC NetWare we need to build stubs for calls to undefined
413 symbols. Because each stub requires an entry in the TOC section
414 which must be at the same location as other entries in the TOC
415 section, we must do this before determining where the TOC section
416 goes in setup_sections. */
417 if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
418 powerpc_build_stubs (inbfd, outbfd, &symbols, &symcount);
421 /* Set up the sections. */
422 bfd_map_over_sections (inbfd, setup_sections, (void *) outbfd);
424 text_sec = bfd_get_section_by_name (outbfd, NLM_CODE_NAME);
426 /* The .bss section immediately follows the .data section. */
427 data_sec = bfd_get_section_by_name (outbfd, NLM_INITIALIZED_DATA_NAME);
428 if (data_sec != NULL)
432 vma = bfd_get_section_size (data_sec);
433 align = 1 << bss_sec->alignment_power;
434 add = ((vma + align - 1) &~ (align - 1)) - vma;
436 if (! bfd_set_section_vma (outbfd, bss_sec, vma))
437 bfd_fatal (_("set .bss vma"));
440 bfd_size_type data_size;
442 data_size = bfd_get_section_size (data_sec);
443 if (! bfd_set_section_size (outbfd, data_sec, data_size + add))
444 bfd_fatal (_("set .data size"));
448 /* Adjust symbol information. */
449 inlead = bfd_get_symbol_leading_char (inbfd);
450 outlead = bfd_get_symbol_leading_char (outbfd);
455 newsyms = (asymbol **) xmalloc (newsymalloc * sizeof (asymbol *));
458 for (i = 0; i < symcount; i++)
464 /* Add or remove a leading underscore. */
465 if (inlead != outlead)
469 if (bfd_asymbol_name (sym)[0] == inlead)
477 new = xmalloc (strlen (bfd_asymbol_name (sym)) + 1);
479 strcpy (new + 1, bfd_asymbol_name (sym) + 1);
488 new = xmalloc (strlen (bfd_asymbol_name (sym)) + 2);
490 strcpy (new + 1, bfd_asymbol_name (sym));
495 /* NLM's have an uninitialized data section, but they do not
496 have a common section in the Unix sense. Move all common
497 symbols into the .bss section, and mark them as exported. */
498 if (bfd_is_com_section (bfd_get_section (sym)))
500 bfd_vma size = sym->value;
502 sym->section = bss_sec;
503 sym->value = bfd_get_section_size (bss_sec);
505 align = 1 << bss_sec->alignment_power;
506 size = (size + align - 1) & ~(align - 1);
507 bfd_set_section_size (outbfd, bss_sec, size);
508 sym->flags |= BSF_EXPORT | BSF_GLOBAL;
510 else if (bfd_get_section (sym)->output_section != NULL)
512 /* Move the symbol into the output section. */
513 sym->value += bfd_get_section (sym)->output_offset;
514 sym->section = bfd_get_section (sym)->output_section;
515 /* This is no longer a section symbol. */
516 sym->flags &=~ BSF_SECTION_SYM;
519 /* Force _edata and _end to be defined. This would normally be
520 done by the linker, but the manipulation of the common
521 symbols will confuse it. */
522 if ((sym->flags & BSF_DEBUGGING) == 0
523 && bfd_asymbol_name (sym)[0] == '_'
524 && bfd_is_und_section (bfd_get_section (sym)))
526 if (strcmp (bfd_asymbol_name (sym), "_edata") == 0)
528 sym->section = bss_sec;
531 if (strcmp (bfd_asymbol_name (sym), "_end") == 0)
533 sym->section = bss_sec;
537 #ifdef NLMCONV_POWERPC
538 /* For PowerPC NetWare, we define __GOT0. This is the start
539 of the .got section. */
540 if (bfd_get_arch (inbfd) == bfd_arch_powerpc
541 && strcmp (bfd_asymbol_name (sym), "__GOT0") == 0)
545 got_sec = bfd_get_section_by_name (inbfd, ".got");
546 assert (got_sec != (asection *) NULL);
547 sym->value = got_sec->output_offset;
548 sym->section = got_sec->output_section;
553 /* If this is a global symbol, check the export list. */
554 if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0)
556 struct string_list *l;
559 /* Unfortunately, a symbol can appear multiple times on the
560 export list, with and without prefixes. */
562 for (l = export_symbols; l != NULL; l = l->next)
564 if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
570 zbase = strchr (l->string, '@');
572 && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
574 /* We must add a symbol with this prefix. */
575 if (newsymcount >= newsymalloc)
578 newsyms = ((asymbol **)
579 xrealloc ((void *) newsyms,
581 * sizeof (asymbol *))));
583 newsyms[newsymcount] =
584 (asymbol *) xmalloc (sizeof (asymbol));
585 *newsyms[newsymcount] = *sym;
586 newsyms[newsymcount]->name = l->string;
593 /* The unmodified symbol is actually not exported at
595 sym->flags &=~ (BSF_GLOBAL | BSF_EXPORT);
596 sym->flags |= BSF_LOCAL;
600 /* If it's an undefined symbol, see if it's on the import list.
601 Change the prefix if necessary. */
602 if (bfd_is_und_section (bfd_get_section (sym)))
604 struct string_list *l;
606 for (l = import_symbols; l != NULL; l = l->next)
608 if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
614 zbase = strchr (l->string, '@');
616 && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
618 sym->name = l->string;
624 non_fatal (_("warning: symbol %s imported but not in import list"),
625 bfd_asymbol_name (sym));
628 /* See if it's one of the special named symbols. */
629 if ((sym->flags & BSF_DEBUGGING) == 0)
633 /* FIXME: If these symbols are not in the .text section, we
634 add the .text section size to the value. This may not be
635 correct for all targets. I'm not sure how this should
636 really be handled. */
637 if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0)
639 val = bfd_asymbol_value (sym);
640 if (bfd_get_section (sym) == data_sec
641 && text_sec != (asection *) NULL)
642 val += bfd_section_size (outbfd, text_sec);
643 if (! bfd_set_start_address (outbfd, val))
644 bfd_fatal (_("set start address"));
647 if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0)
649 val = bfd_asymbol_value (sym);
650 if (bfd_get_section (sym) == data_sec
651 && text_sec != (asection *) NULL)
652 val += bfd_section_size (outbfd, text_sec);
653 nlm_fixed_header (outbfd)->exitProcedureOffset = val;
656 if (check_procedure != NULL
657 && strcmp (bfd_asymbol_name (sym), check_procedure) == 0)
659 val = bfd_asymbol_value (sym);
660 if (bfd_get_section (sym) == data_sec
661 && text_sec != (asection *) NULL)
662 val += bfd_section_size (outbfd, text_sec);
663 nlm_fixed_header (outbfd)->checkUnloadProcedureOffset = val;
671 endsym->value = bfd_get_section_size (bss_sec);
673 /* FIXME: If any relocs referring to _end use inplace addends,
674 then I think they need to be updated. This is handled by
675 i386_mangle_relocs. Is it needed for any other object
679 if (newsymcount == 0)
683 outsyms = (asymbol **) xmalloc ((symcount + newsymcount + 1)
684 * sizeof (asymbol *));
685 memcpy (outsyms, symbols, symcount * sizeof (asymbol *));
686 memcpy (outsyms + symcount, newsyms, newsymcount * sizeof (asymbol *));
687 outsyms[symcount + newsymcount] = NULL;
690 bfd_set_symtab (outbfd, outsyms, symcount + newsymcount);
693 non_fatal (_("warning: START procedure %s not defined"), start_procedure);
695 non_fatal (_("warning: EXIT procedure %s not defined"), exit_procedure);
696 if (check_procedure != NULL && ! gotcheck)
697 non_fatal (_("warning: CHECK procedure %s not defined"), check_procedure);
699 /* Add additional sections required for the header information. */
700 if (custom_file != NULL)
702 custom_data = fopen (custom_file, "r");
703 if (custom_data == NULL
704 || fstat (fileno (custom_data), &st) < 0)
706 fprintf (stderr, "%s:%s: %s\n", program_name, custom_file,
712 custom_size = st.st_size;
713 custom_section = bfd_make_section (outbfd, ".nlmcustom");
714 if (custom_section == NULL
715 || ! bfd_set_section_size (outbfd, custom_section, custom_size)
716 || ! bfd_set_section_flags (outbfd, custom_section,
718 bfd_fatal (_("custom section"));
721 if (help_file != NULL)
723 help_data = fopen (help_file, "r");
724 if (help_data == NULL
725 || fstat (fileno (help_data), &st) < 0)
727 fprintf (stderr, "%s:%s: %s\n", program_name, help_file,
733 help_size = st.st_size;
734 help_section = bfd_make_section (outbfd, ".nlmhelp");
735 if (help_section == NULL
736 || ! bfd_set_section_size (outbfd, help_section, help_size)
737 || ! bfd_set_section_flags (outbfd, help_section,
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 (outbfd, ".nlmmessages");
757 if (message_section == NULL
758 || ! bfd_set_section_size (outbfd, message_section, message_size)
759 || ! bfd_set_section_flags (outbfd, message_section,
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 (outbfd, ".nlmmodules");
773 if (module_section == NULL
774 || ! bfd_set_section_size (outbfd, module_section, module_size)
775 || ! bfd_set_section_flags (outbfd, module_section,
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 (outbfd, ".nlmrpc");
793 if (rpc_section == NULL
794 || ! bfd_set_section_size (outbfd, rpc_section, rpc_size)
795 || ! bfd_set_section_flags (outbfd, rpc_section,
797 bfd_fatal (_("rpc section"));
798 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
801 if (sharelib_file != NULL)
803 sharedbfd = bfd_openr (sharelib_file, output_format);
804 if (sharedbfd == NULL
805 || ! bfd_check_format (sharedbfd, bfd_object))
807 fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
808 bfd_errmsg (bfd_get_error ()));
809 sharelib_file = NULL;
813 sharedhdr = *nlm_fixed_header (sharedbfd);
814 bfd_close (sharedbfd);
815 shared_data = fopen (sharelib_file, "r");
816 if (shared_data == NULL
817 || (fstat (fileno (shared_data), &st) < 0))
819 fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
821 sharelib_file = NULL;
825 /* If we were clever, we could just copy out the
826 sections of the shared library which we actually
827 need. However, we would have to figure out the sizes
828 of the external and public information, and that can
829 not be done without reading through them. */
830 if (sharedhdr.uninitializedDataSize > 0)
832 /* There is no place to record this information. */
833 non_fatal (_("%s: warning: shared libraries can not have uninitialized data"),
836 shared_offset = st.st_size;
837 if (shared_offset > (size_t) sharedhdr.codeImageOffset)
838 shared_offset = sharedhdr.codeImageOffset;
839 if (shared_offset > (size_t) sharedhdr.dataImageOffset)
840 shared_offset = sharedhdr.dataImageOffset;
841 if (shared_offset > (size_t) sharedhdr.relocationFixupOffset)
842 shared_offset = sharedhdr.relocationFixupOffset;
843 if (shared_offset > (size_t) sharedhdr.externalReferencesOffset)
844 shared_offset = sharedhdr.externalReferencesOffset;
845 if (shared_offset > (size_t) sharedhdr.publicsOffset)
846 shared_offset = sharedhdr.publicsOffset;
847 shared_size = st.st_size - shared_offset;
848 shared_section = bfd_make_section (outbfd, ".nlmshared");
849 if (shared_section == NULL
850 || ! bfd_set_section_size (outbfd, shared_section,
852 || ! bfd_set_section_flags (outbfd, shared_section,
854 bfd_fatal (_("shared section"));
855 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
860 /* Check whether a version was given. */
861 if (!CONST_STRNEQ (version_hdr->stamp, "VeRsIoN#"))
862 non_fatal (_("warning: No version number given"));
864 /* At least for now, always create an extended header, because that
865 is what NLMLINK does. */
866 LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
868 LITMEMCPY (nlm_cygnus_ext_header (outbfd)->stamp, "CyGnUsEx");
870 /* If the date was not given, force it in. */
871 if (nlm_version_header (outbfd)->month == 0
872 && nlm_version_header (outbfd)->day == 0
873 && nlm_version_header (outbfd)->year == 0)
879 ptm = localtime (&now);
880 nlm_version_header (outbfd)->month = ptm->tm_mon + 1;
881 nlm_version_header (outbfd)->day = ptm->tm_mday;
882 nlm_version_header (outbfd)->year = ptm->tm_year + 1900;
883 LITMEMCPY (version_hdr->stamp, "VeRsIoN#");
886 #ifdef NLMCONV_POWERPC
887 /* Resolve the stubs we build for PowerPC NetWare. */
888 if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
889 powerpc_resolve_stubs (inbfd, outbfd);
892 /* Copy over the sections. */
893 bfd_map_over_sections (inbfd, copy_sections, (void *) outbfd);
895 /* Finish up the header information. */
896 if (custom_file != NULL)
900 data = xmalloc (custom_size);
901 if (fread (data, 1, custom_size, custom_data) != custom_size)
902 non_fatal (_("%s: read: %s"), custom_file, strerror (errno));
905 if (! bfd_set_section_contents (outbfd, custom_section, data,
906 (file_ptr) 0, custom_size))
907 bfd_fatal (_("custom section"));
908 nlm_fixed_header (outbfd)->customDataOffset =
909 custom_section->filepos;
910 nlm_fixed_header (outbfd)->customDataSize = custom_size;
916 /* As a special hack, the backend recognizes a debugInfoOffset
917 of -1 to mean that it should not output any debugging
918 information. This can not be handling by fiddling with the
919 symbol table because exported symbols appear in both the
920 export information and the debugging information. */
921 nlm_fixed_header (outbfd)->debugInfoOffset = (file_ptr) -1;
924 non_fatal (_("warning: FULLMAP is not supported; try ld -M"));
925 if (help_file != NULL)
929 data = xmalloc (help_size);
930 if (fread (data, 1, help_size, help_data) != help_size)
931 non_fatal (_("%s: read: %s"), help_file, strerror (errno));
934 if (! bfd_set_section_contents (outbfd, help_section, data,
935 (file_ptr) 0, help_size))
936 bfd_fatal (_("help section"));
937 nlm_extended_header (outbfd)->helpFileOffset =
938 help_section->filepos;
939 nlm_extended_header (outbfd)->helpFileLength = help_size;
943 if (message_file != NULL)
947 data = xmalloc (message_size);
948 if (fread (data, 1, message_size, message_data) != message_size)
949 non_fatal (_("%s: read: %s"), message_file, strerror (errno));
952 if (! bfd_set_section_contents (outbfd, message_section, data,
953 (file_ptr) 0, message_size))
954 bfd_fatal (_("message section"));
955 nlm_extended_header (outbfd)->messageFileOffset =
956 message_section->filepos;
957 nlm_extended_header (outbfd)->messageFileLength = message_size;
959 /* FIXME: Are these offsets correct on all platforms? Are
960 they 32 bits on all platforms? What endianness? */
961 nlm_extended_header (outbfd)->languageID =
962 bfd_h_get_32 (outbfd, (bfd_byte *) data + 106);
963 nlm_extended_header (outbfd)->messageCount =
964 bfd_h_get_32 (outbfd, (bfd_byte *) data + 110);
972 struct string_list *l;
975 data = xmalloc (module_size);
977 set = (unsigned char *) data;
978 for (l = modules; l != NULL; l = l->next)
980 *set = strlen (l->string);
981 strncpy ((char *) set + 1, l->string, *set);
985 if (! bfd_set_section_contents (outbfd, module_section, data,
986 (file_ptr) 0, module_size))
987 bfd_fatal (_("module section"));
988 nlm_fixed_header (outbfd)->moduleDependencyOffset =
989 module_section->filepos;
990 nlm_fixed_header (outbfd)->numberOfModuleDependencies = c;
992 if (rpc_file != NULL)
996 data = xmalloc (rpc_size);
997 if (fread (data, 1, rpc_size, rpc_data) != rpc_size)
998 non_fatal (_("%s: read: %s"), rpc_file, strerror (errno));
1001 if (! bfd_set_section_contents (outbfd, rpc_section, data,
1002 (file_ptr) 0, rpc_size))
1003 bfd_fatal (_("rpc section"));
1004 nlm_extended_header (outbfd)->RPCDataOffset =
1005 rpc_section->filepos;
1006 nlm_extended_header (outbfd)->RPCDataLength = rpc_size;
1010 if (sharelib_file != NULL)
1014 data = xmalloc (shared_size);
1015 if (fseek (shared_data, shared_offset, SEEK_SET) != 0
1016 || fread (data, 1, shared_size, shared_data) != shared_size)
1017 non_fatal (_("%s: read: %s"), sharelib_file, strerror (errno));
1020 if (! bfd_set_section_contents (outbfd, shared_section, data,
1021 (file_ptr) 0, shared_size))
1022 bfd_fatal (_("shared section"));
1024 nlm_extended_header (outbfd)->sharedCodeOffset =
1025 sharedhdr.codeImageOffset - shared_offset + shared_section->filepos;
1026 nlm_extended_header (outbfd)->sharedCodeLength =
1027 sharedhdr.codeImageSize;
1028 nlm_extended_header (outbfd)->sharedDataOffset =
1029 sharedhdr.dataImageOffset - shared_offset + shared_section->filepos;
1030 nlm_extended_header (outbfd)->sharedDataLength =
1031 sharedhdr.dataImageSize;
1032 nlm_extended_header (outbfd)->sharedRelocationFixupOffset =
1033 (sharedhdr.relocationFixupOffset
1035 + shared_section->filepos);
1036 nlm_extended_header (outbfd)->sharedRelocationFixupCount =
1037 sharedhdr.numberOfRelocationFixups;
1038 nlm_extended_header (outbfd)->sharedExternalReferenceOffset =
1039 (sharedhdr.externalReferencesOffset
1041 + shared_section->filepos);
1042 nlm_extended_header (outbfd)->sharedExternalReferenceCount =
1043 sharedhdr.numberOfExternalReferences;
1044 nlm_extended_header (outbfd)->sharedPublicsOffset =
1045 sharedhdr.publicsOffset - shared_offset + shared_section->filepos;
1046 nlm_extended_header (outbfd)->sharedPublicsCount =
1047 sharedhdr.numberOfPublics;
1048 nlm_extended_header (outbfd)->sharedDebugRecordOffset =
1049 sharedhdr.debugInfoOffset - shared_offset + shared_section->filepos;
1050 nlm_extended_header (outbfd)->sharedDebugRecordCount =
1051 sharedhdr.numberOfDebugRecords;
1052 nlm_extended_header (outbfd)->SharedInitializationOffset =
1053 sharedhdr.codeStartOffset;
1054 nlm_extended_header (outbfd)->SharedExitProcedureOffset =
1055 sharedhdr.exitProcedureOffset;
1060 const int max_len = NLM_MODULE_NAME_SIZE - 2;
1061 const char * filename = lbasename (output_file);
1063 len = strlen (filename);
1066 nlm_fixed_header (outbfd)->moduleName[0] = len;
1068 strncpy (nlm_fixed_header (outbfd)->moduleName + 1, filename, max_len);
1069 nlm_fixed_header (outbfd)->moduleName[max_len + 1] = '\0';
1071 for (modname = nlm_fixed_header (outbfd)->moduleName;
1074 *modname = TOUPPER (*modname);
1077 strncpy (nlm_variable_header (outbfd)->oldThreadName, " LONG",
1078 NLM_OLD_THREAD_NAME_LENGTH);
1080 nlm_cygnus_ext_header (outbfd)->offset = secsec->filepos;
1081 nlm_cygnus_ext_header (outbfd)->length = bfd_section_size (outbfd, secsec);
1083 if (! bfd_close (outbfd))
1084 bfd_fatal (output_file);
1085 if (! bfd_close (inbfd))
1086 bfd_fatal (input_file);
1088 if (unlink_on_exit != NULL)
1089 unlink (unlink_on_exit);
1095 /* Show a usage message and exit. */
1098 show_usage (FILE *file, int status)
1100 fprintf (file, _("Usage: %s [option(s)] [in-file [out-file]]\n"), program_name);
1101 fprintf (file, _(" Convert an object file into a NetWare Loadable Module\n"));
1102 fprintf (file, _(" The options are:\n\
1103 -I --input-target=<bfdname> Set the input binary file format\n\
1104 -O --output-target=<bfdname> Set the output binary file format\n\
1105 -T --header-file=<file> Read <file> for NLM header information\n\
1106 -l --linker=<linker> Use <linker> for any linking\n\
1107 -d --debug Display on stderr the linker command line\n\
1108 @<file> Read options from <file>.\n\
1109 -h --help Display this information\n\
1110 -v --version Display the program's version\n\
1113 fprintf (file, _("Report bugs to %s\n"), REPORT_BUGS_TO);
1117 /* Select the output format based on the input architecture, machine,
1118 and endianness. This chooses the appropriate NLM target. */
1121 select_output_format (enum bfd_architecture arch, unsigned long mach,
1122 bfd_boolean bigendian ATTRIBUTE_UNUSED)
1128 return "nlm32-i386";
1130 #ifdef NLMCONV_SPARC
1131 case bfd_arch_sparc:
1132 return "nlm32-sparc";
1134 #ifdef NLMCONV_ALPHA
1135 case bfd_arch_alpha:
1136 return "nlm32-alpha";
1138 #ifdef NLMCONV_POWERPC
1139 case bfd_arch_powerpc:
1140 return "nlm32-powerpc";
1143 fatal (_("support not compiled in for %s"),
1144 bfd_printable_arch_mach (arch, mach));
1149 /* The BFD sections are copied in two passes. This function selects
1150 the output section for each input section, and sets up the section
1154 setup_sections (bfd *inbfd ATTRIBUTE_UNUSED, asection *insec, void *data_ptr)
1156 bfd *outbfd = (bfd *) data_ptr;
1158 const char *outname;
1161 bfd_size_type align;
1163 bfd_size_type secsecsize;
1165 f = bfd_get_section_flags (inbfd, insec);
1167 outname = NLM_CODE_NAME;
1168 else if ((f & SEC_LOAD) && (f & SEC_HAS_CONTENTS))
1169 outname = NLM_INITIALIZED_DATA_NAME;
1170 else if (f & SEC_ALLOC)
1171 outname = NLM_UNINITIALIZED_DATA_NAME;
1173 outname = bfd_section_name (inbfd, insec);
1175 outsec = bfd_get_section_by_name (outbfd, outname);
1178 outsec = bfd_make_section (outbfd, outname);
1180 bfd_fatal (_("make section"));
1183 insec->output_section = outsec;
1185 offset = bfd_section_size (outbfd, outsec);
1186 align = 1 << bfd_section_alignment (inbfd, insec);
1187 add = ((offset + align - 1) &~ (align - 1)) - offset;
1188 insec->output_offset = offset + add;
1190 if (! bfd_set_section_size (outbfd, outsec,
1191 (bfd_section_size (outbfd, outsec)
1192 + bfd_section_size (inbfd, insec)
1194 bfd_fatal (_("set section size"));
1196 if ((bfd_section_alignment (inbfd, insec)
1197 > bfd_section_alignment (outbfd, outsec))
1198 && ! bfd_set_section_alignment (outbfd, outsec,
1199 bfd_section_alignment (inbfd, insec)))
1200 bfd_fatal (_("set section alignment"));
1202 if (! bfd_set_section_flags (outbfd, outsec,
1203 f | bfd_get_section_flags (outbfd, outsec)))
1204 bfd_fatal (_("set section flags"));
1206 bfd_set_reloc (outbfd, outsec, (arelent **) NULL, 0);
1208 /* For each input section we allocate space for an entry in
1210 secsecsize = bfd_section_size (outbfd, secsec);
1211 secsecsize += strlen (bfd_section_name (inbfd, insec)) + 1;
1212 secsecsize = (secsecsize + 3) &~ 3;
1214 if (! bfd_set_section_size (outbfd, secsec, secsecsize))
1215 bfd_fatal (_("set .nlmsections size"));
1218 /* Copy the section contents. */
1221 copy_sections (bfd *inbfd, asection *insec, void *data_ptr)
1223 static bfd_size_type secsecoff = 0;
1224 bfd *outbfd = (bfd *) data_ptr;
1233 inname = bfd_section_name (inbfd, insec);
1235 outsec = insec->output_section;
1236 assert (outsec != NULL);
1238 size = bfd_get_section_size (insec);
1240 if ((bfd_get_section_flags (inbfd, insec) & SEC_HAS_CONTENTS) == 0)
1244 contents = xmalloc (size);
1245 if (! bfd_get_section_contents (inbfd, insec, contents,
1246 (file_ptr) 0, size))
1247 bfd_fatal (bfd_get_filename (inbfd));
1250 reloc_size = bfd_get_reloc_upper_bound (inbfd, insec);
1252 bfd_fatal (bfd_get_filename (inbfd));
1253 if (reloc_size != 0)
1258 relocs = (arelent **) xmalloc (reloc_size);
1259 reloc_count = bfd_canonicalize_reloc (inbfd, insec, relocs, symbols);
1260 if (reloc_count < 0)
1261 bfd_fatal (bfd_get_filename (inbfd));
1262 mangle_relocs (outbfd, insec, &relocs, &reloc_count, (char *) contents,
1265 /* FIXME: refers to internal BFD fields. */
1266 if (outsec->orelocation != (arelent **) NULL)
1268 bfd_size_type total_count;
1271 total_count = reloc_count + outsec->reloc_count;
1272 combined = (arelent **) xmalloc (total_count * sizeof (arelent *));
1273 memcpy (combined, outsec->orelocation,
1274 outsec->reloc_count * sizeof (arelent *));
1275 memcpy (combined + outsec->reloc_count, relocs,
1276 (size_t) (reloc_count * sizeof (arelent *)));
1277 free (outsec->orelocation);
1278 reloc_count = total_count;
1282 bfd_set_reloc (outbfd, outsec, relocs, reloc_count);
1285 if (contents != NULL)
1287 if (! bfd_set_section_contents (outbfd, outsec, contents,
1288 insec->output_offset, size))
1289 bfd_fatal (bfd_get_filename (outbfd));
1293 /* Add this section to .nlmsections. */
1294 if (! bfd_set_section_contents (outbfd, secsec, (void *) inname, secsecoff,
1295 strlen (inname) + 1))
1296 bfd_fatal (_("set .nlmsection contents"));
1297 secsecoff += strlen (inname) + 1;
1299 add = ((secsecoff + 3) &~ 3) - secsecoff;
1302 bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
1303 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, add))
1304 bfd_fatal (_("set .nlmsection contents"));
1308 if (contents != NULL)
1309 bfd_h_put_32 (outbfd, (bfd_vma) outsec->filepos, buf);
1311 bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
1312 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
1313 bfd_fatal (_("set .nlmsection contents"));
1316 bfd_h_put_32 (outbfd, (bfd_vma) size, buf);
1317 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
1318 bfd_fatal (_("set .nlmsection contents"));
1322 /* Some, perhaps all, NetWare targets require changing the relocs used
1323 by the input formats. */
1326 mangle_relocs (bfd *outbfd, asection *insec, arelent ***relocs_ptr,
1327 long *reloc_count_ptr, char *contents,
1328 bfd_size_type contents_size)
1330 switch (bfd_get_arch (outbfd))
1334 i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1335 contents, contents_size);
1338 #ifdef NLMCONV_ALPHA
1339 case bfd_arch_alpha:
1340 alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1341 contents, contents_size);
1344 #ifdef NLMCONV_POWERPC
1345 case bfd_arch_powerpc:
1346 powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1347 contents, contents_size);
1351 default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1352 contents, contents_size);
1357 /* By default all we need to do for relocs is change the address by
1358 the output_offset. */
1361 default_mangle_relocs (bfd *outbfd ATTRIBUTE_UNUSED, asection *insec,
1362 arelent ***relocs_ptr, long *reloc_count_ptr,
1363 char *contents ATTRIBUTE_UNUSED,
1364 bfd_size_type contents_size ATTRIBUTE_UNUSED)
1366 if (insec->output_offset != 0)
1372 reloc_count = *reloc_count_ptr;
1373 relocs = *relocs_ptr;
1374 for (i = 0; i < reloc_count; i++, relocs++)
1375 (*relocs)->address += insec->output_offset;
1381 /* NetWare on the i386 supports a restricted set of relocs, which are
1382 different from those used on other i386 targets. This routine
1383 converts the relocs. It is, obviously, very target dependent. At
1384 the moment, the nlm32-i386 backend performs similar translations;
1385 however, it is more reliable and efficient to do them here. */
1387 static reloc_howto_type nlm_i386_pcrel_howto =
1388 HOWTO (1, /* type */
1390 2, /* size (0 = byte, 1 = short, 2 = long) */
1392 TRUE, /* pc_relative */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 0, /* special_function */
1396 "DISP32", /* name */
1397 TRUE, /* partial_inplace */
1398 0xffffffff, /* src_mask */
1399 0xffffffff, /* dst_mask */
1400 TRUE); /* pcrel_offset */
1403 i386_mangle_relocs (bfd *outbfd, asection *insec, arelent ***relocs_ptr,
1404 long *reloc_count_ptr, char *contents,
1405 bfd_size_type contents_size)
1407 long reloc_count, i;
1410 reloc_count = *reloc_count_ptr;
1411 relocs = *relocs_ptr;
1412 for (i = 0; i < reloc_count; i++)
1416 bfd_size_type address;
1420 sym = *rel->sym_ptr_ptr;
1422 /* We're moving the relocs from the input section to the output
1423 section, so we must adjust the address accordingly. */
1424 address = rel->address;
1425 rel->address += insec->output_offset;
1427 /* Note that no serious harm will ensue if we fail to change a
1428 reloc. The backend will fail when writing out the reloc. */
1430 /* Make sure this reloc is within the data we have. We use only
1431 4 byte relocs here, so we insist on having 4 bytes. */
1432 if (address + 4 > contents_size)
1435 /* A PC relative reloc entirely within a single section is
1436 completely unnecessary. This can be generated by ld -r. */
1437 if (sym == insec->symbol
1438 && rel->howto != NULL
1439 && rel->howto->pc_relative
1440 && ! rel->howto->pcrel_offset)
1444 memmove (relocs, relocs + 1,
1445 (size_t) ((reloc_count - i) * sizeof (arelent *)));
1449 /* Get the amount the relocation will add in. */
1450 addend = rel->addend + sym->value;
1452 /* NetWare doesn't support PC relative relocs against defined
1453 symbols, so we have to eliminate them by doing the relocation
1454 now. We can only do this if the reloc is within a single
1456 if (rel->howto != NULL
1457 && rel->howto->pc_relative
1458 && bfd_get_section (sym) == insec->output_section)
1462 if (rel->howto->pcrel_offset)
1465 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1467 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1471 memmove (relocs, relocs + 1,
1472 (size_t) ((reloc_count - i) * sizeof (arelent *)));
1476 /* NetWare doesn't support reloc addends, so we get rid of them
1477 here by simply adding them into the object data. We handle
1478 the symbol value, if any, the same way. */
1480 && rel->howto != NULL
1481 && rel->howto->rightshift == 0
1482 && rel->howto->size == 2
1483 && rel->howto->bitsize == 32
1484 && rel->howto->bitpos == 0
1485 && rel->howto->src_mask == 0xffffffff
1486 && rel->howto->dst_mask == 0xffffffff)
1490 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1492 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1494 /* Adjust the reloc for the changes we just made. */
1496 if (! bfd_is_und_section (bfd_get_section (sym)))
1497 rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
1500 /* NetWare uses a reloc with pcrel_offset set. We adjust
1501 pc_relative relocs accordingly. We are going to change the
1502 howto field, so we can only do this if the current one is
1503 compatible. We should check that special_function is NULL
1504 here, but at the moment coff-i386 uses a special_function
1505 which does not affect what we are doing here. */
1506 if (rel->howto != NULL
1507 && rel->howto->pc_relative
1508 && ! rel->howto->pcrel_offset
1509 && rel->howto->rightshift == 0
1510 && rel->howto->size == 2
1511 && rel->howto->bitsize == 32
1512 && rel->howto->bitpos == 0
1513 && rel->howto->src_mask == 0xffffffff
1514 && rel->howto->dst_mask == 0xffffffff)
1518 /* When pcrel_offset is not set, it means that the negative
1519 of the address of the memory location is stored in the
1520 memory location. We must add it back in. */
1521 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1523 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1525 /* We must change to a new howto. */
1526 rel->howto = &nlm_i386_pcrel_howto;
1531 #endif /* NLMCONV_I386 */
1533 #ifdef NLMCONV_ALPHA
1535 /* On the Alpha the first reloc for every section must be a special
1536 relocs which hold the GP address. Also, the first reloc in the
1537 file must be a special reloc which holds the address of the .lita
1540 static reloc_howto_type nlm32_alpha_nw_howto =
1541 HOWTO (ALPHA_R_NW_RELOC, /* type */
1543 0, /* size (0 = byte, 1 = short, 2 = long) */
1545 FALSE, /* pc_relative */
1547 complain_overflow_dont, /* complain_on_overflow */
1548 0, /* special_function */
1549 "NW_RELOC", /* name */
1550 FALSE, /* partial_inplace */
1553 FALSE); /* pcrel_offset */
1556 alpha_mangle_relocs (bfd *outbfd, asection *insec,
1557 arelent ***relocs_ptr, long *reloc_count_ptr,
1558 char *contents ATTRIBUTE_UNUSED,
1559 bfd_size_type contents_size ATTRIBUTE_UNUSED)
1561 long old_reloc_count;
1562 arelent **old_relocs;
1565 old_reloc_count = *reloc_count_ptr;
1566 old_relocs = *relocs_ptr;
1567 relocs = (arelent **) xmalloc ((old_reloc_count + 3) * sizeof (arelent *));
1568 *relocs_ptr = relocs;
1570 if (nlm_alpha_backend_data (outbfd)->lita_address == 0)
1573 asection *lita_section;
1575 inbfd = insec->owner;
1576 lita_section = bfd_get_section_by_name (inbfd, _LITA);
1577 if (lita_section != (asection *) NULL)
1579 nlm_alpha_backend_data (outbfd)->lita_address =
1580 bfd_get_section_vma (inbfd, lita_section);
1581 nlm_alpha_backend_data (outbfd)->lita_size =
1582 bfd_section_size (inbfd, lita_section);
1586 /* Avoid outputting this reloc again. */
1587 nlm_alpha_backend_data (outbfd)->lita_address = 4;
1590 *relocs = (arelent *) xmalloc (sizeof (arelent));
1591 (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1592 (*relocs)->address = nlm_alpha_backend_data (outbfd)->lita_address;
1593 (*relocs)->addend = nlm_alpha_backend_data (outbfd)->lita_size + 1;
1594 (*relocs)->howto = &nlm32_alpha_nw_howto;
1596 ++(*reloc_count_ptr);
1599 /* Get the GP value from bfd. */
1600 if (nlm_alpha_backend_data (outbfd)->gp == 0)
1601 nlm_alpha_backend_data (outbfd)->gp =
1602 bfd_ecoff_get_gp_value (insec->owner);
1604 *relocs = (arelent *) xmalloc (sizeof (arelent));
1605 (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1606 (*relocs)->address = nlm_alpha_backend_data (outbfd)->gp;
1607 (*relocs)->addend = 0;
1608 (*relocs)->howto = &nlm32_alpha_nw_howto;
1610 ++(*reloc_count_ptr);
1612 memcpy (relocs, old_relocs, (size_t) old_reloc_count * sizeof (arelent *));
1613 relocs[old_reloc_count] = (arelent *) NULL;
1617 if (insec->output_offset != 0)
1621 for (i = 0; i < (bfd_size_type) old_reloc_count; i++, relocs++)
1622 (*relocs)->address += insec->output_offset;
1626 #endif /* NLMCONV_ALPHA */
1628 #ifdef NLMCONV_POWERPC
1630 /* We keep a linked list of stubs which we must build. Because BFD
1631 requires us to know the sizes of all sections before we can set the
1632 contents of any, we must figure out which stubs we want to build
1633 before we can actually build any of them. */
1637 /* Next stub in linked list. */
1638 struct powerpc_stub *next;
1640 /* Symbol whose value is the start of the stub. This is a symbol
1641 whose name begins with `.'. */
1644 /* Symbol we are going to create a reloc against. This is a symbol
1645 with the same name as START but without the leading `.'. */
1648 /* The TOC index for this stub. This is the index into the TOC
1649 section at which the reloc is created. */
1650 unsigned int toc_index;
1653 /* The linked list of stubs. */
1655 static struct powerpc_stub *powerpc_stubs;
1657 /* This is what a stub looks like. The first instruction will get
1658 adjusted with the correct TOC index. */
1660 static unsigned long powerpc_stub_insns[] =
1662 0x81820000, /* lwz r12,0(r2) */
1663 0x90410014, /* stw r2,20(r1) */
1664 0x800c0000, /* lwz r0,0(r12) */
1665 0x804c0004, /* lwz r2,r(r12) */
1666 0x7c0903a6, /* mtctr r0 */
1667 0x4e800420, /* bctr */
1668 0, /* Traceback table. */
1673 #define POWERPC_STUB_INSN_COUNT \
1674 (sizeof powerpc_stub_insns / sizeof powerpc_stub_insns[0])
1676 #define POWERPC_STUB_SIZE (4 * POWERPC_STUB_INSN_COUNT)
1678 /* Each stub uses a four byte TOC entry. */
1679 #define POWERPC_STUB_TOC_ENTRY_SIZE (4)
1681 /* The original size of the .got section. */
1682 static bfd_size_type powerpc_initial_got_size;
1684 /* Look for all undefined symbols beginning with `.', and prepare to
1685 build a stub for each one. */
1688 powerpc_build_stubs (bfd *inbfd, bfd *outbfd ATTRIBUTE_UNUSED,
1689 asymbol ***symbols_ptr, long *symcount_ptr)
1693 unsigned int got_base;
1698 /* Make a section to hold stubs. We don't set SEC_HAS_CONTENTS for
1699 the section to prevent copy_sections from reading from it. */
1700 stub_sec = bfd_make_section (inbfd, ".stubs");
1701 if (stub_sec == (asection *) NULL
1702 || ! bfd_set_section_flags (inbfd, stub_sec,
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 (inbfd, ".got");
1715 if (got_sec == (asection *) NULL
1716 || ! bfd_set_section_flags (inbfd, got_sec,
1721 | SEC_HAS_CONTENTS))
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)
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 /* We must be able to resolve all PC relative relocs at this
1918 point. If we get a branch to an undefined symbol we build a
1919 stub, since NetWare will resolve undefined symbols into a
1920 pointer to a function descriptor. */
1921 if (rel->howto->pc_relative)
1923 /* This check for whether a symbol is in the same section as
1924 the reloc will be wrong if there is a PC relative reloc
1925 between two sections both of which were placed in the
1926 same output section. This should not happen. */
1927 if (bfd_get_section (sym) != insec->output_section)
1928 non_fatal (_("unresolved PC relative reloc against %s"),
1929 bfd_asymbol_name (sym));
1934 assert (rel->howto->size == 2 && rel->howto->pcrel_offset);
1935 val = bfd_get_32 (outbfd, (bfd_byte *) contents + rel->address);
1936 val = ((val &~ rel->howto->dst_mask)
1937 | (((val & rel->howto->src_mask)
1938 + (sym->value - rel->address)
1940 & rel->howto->dst_mask));
1941 bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
1943 /* If this reloc is against an stubbed symbol and the
1946 then we replace the next instruction with
1948 This reloads the TOC pointer after a stub call. */
1949 if (bfd_asymbol_name (sym)[0] == '.'
1950 && (sym->flags & BSF_DYNAMIC) != 0
1951 && (bfd_get_32 (outbfd,
1952 (bfd_byte *) contents + rel->address + 4)
1953 == 0x4ffffb82)) /* cror 31,31,31 */
1954 bfd_put_32 (outbfd, (bfd_vma) 0x80410014, /* lwz r2,20(r1) */
1955 (bfd_byte *) contents + rel->address + 4);
1959 memmove (relocs, relocs + 1,
1960 (size_t) ((reloc_count - 1) * sizeof (arelent *)));
1965 /* When considering a TOC reloc, we do not want to include the
1966 symbol value. The symbol will be start of the TOC section
1967 (which is named .got). We do want to include the addend. */
1968 if (rel->howto == toc_howto)
1971 sym_value = sym->value;
1973 /* If this is a relocation against a symbol with a value, or
1974 there is a reloc addend, we need to update the addend in the
1976 if (sym_value + rel->addend != 0)
1980 switch (rel->howto->size)
1983 val = bfd_get_16 (outbfd,
1984 (bfd_byte *) contents + rel->address);
1985 val = ((val &~ rel->howto->dst_mask)
1986 | (((val & rel->howto->src_mask)
1989 & rel->howto->dst_mask));
1990 if ((bfd_signed_vma) val < - 0x8000
1991 || (bfd_signed_vma) val >= 0x8000)
1992 non_fatal (_("overflow when adjusting relocation against %s"),
1993 bfd_asymbol_name (sym));
1994 bfd_put_16 (outbfd, val, (bfd_byte *) contents + rel->address);
1998 val = bfd_get_32 (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 bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
2012 if (! bfd_is_und_section (bfd_get_section (sym)))
2013 rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
2017 /* Now that we have incorporated the addend, remove any TOC
2019 if (rel->howto == toc_howto)
2023 memmove (relocs, relocs + 1,
2024 (size_t) ((reloc_count - i) * sizeof (arelent *)));
2028 rel->address += insec->output_offset;
2032 #endif /* NLMCONV_POWERPC */
2034 /* Name of linker. */
2036 #define LD_NAME "ld"
2039 /* The user has specified several input files. Invoke the linker to
2040 link them all together, and convert and delete the resulting output
2044 link_inputs (struct string_list *inputs, char *ld, char * map_file)
2047 struct string_list *q;
2056 for (q = inputs; q != NULL; q = q->next)
2059 argv = (char **) alloca ((c + 7) * sizeof (char *));
2066 /* Find the linker to invoke based on how nlmconv was run. */
2067 p = program_name + strlen (program_name);
2068 while (p != program_name)
2072 ld = (char *) xmalloc (p - program_name + strlen (LD_NAME) + 1);
2073 memcpy (ld, program_name, p - program_name);
2074 strcpy (ld + (p - program_name), LD_NAME);
2083 ld = (char *) LD_NAME;
2085 unlink_on_exit = make_temp_file (".O");
2088 argv[1] = (char *) "-Ur";
2089 argv[2] = (char *) "-o";
2090 argv[3] = unlink_on_exit;
2091 /* If we have been given the name of a mapfile and that
2092 name is not 'stderr' then pass it on to the linker. */
2095 && strcmp (map_file, "stderr") == 0)
2097 argv[4] = (char *) "-Map";
2104 for (q = inputs; q != NULL; q = q->next, i++)
2105 argv[i] = q->string;
2110 for (i = 0; argv[i] != NULL; i++)
2111 fprintf (stderr, " %s", argv[i]);
2112 fprintf (stderr, "\n");
2115 pid = pexecute (ld, argv, program_name, (char *) NULL, &errfmt, &errarg,
2116 PEXECUTE_SEARCH | PEXECUTE_ONE);
2119 fprintf (stderr, _("%s: execution of %s failed: "), program_name, ld);
2120 fprintf (stderr, errfmt, errarg);
2121 unlink (unlink_on_exit);
2125 if (pwait (pid, &status, 0) < 0)
2128 unlink (unlink_on_exit);
2134 non_fatal (_("Execution of %s failed"), ld);
2135 unlink (unlink_on_exit);
2139 return unlink_on_exit;