1 /* nlmconv.c -- NLM conversion program
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 PARAMS ((int));
62 extern struct tm *localtime ();
75 /* Global variables. */
77 /* The name used to invoke the program. */
80 /* Local variables. */
82 /* Whether to print out debugging information (currently just controls
83 whether it prints the linker command if there is one). */
86 /* The symbol table. */
87 static asymbol **symbols;
89 /* A section we create in the output file to hold pointers to where
90 the sections of the input file end up. We will put a pointer to
91 this section in the NLM header. These is an entry for each input
92 section. The format is
93 null terminated section name
94 zeroes to adjust to 4 byte boundary
95 4 byte section data file pointer
97 We don't need a version number. The way we find this information
98 is by finding a stamp in the NLM header information. If we need to
99 change the format of this information, we can simply change the
101 static asection *secsec;
103 /* A temporary file name to be unlinked on exit. Actually, for most
104 errors, we leave it around. It's not clear whether that is helpful
106 static char *unlink_on_exit;
108 /* The list of long options. */
109 static struct option long_options[] =
111 { "debug", no_argument, 0, 'd' },
112 { "header-file", required_argument, 0, 'T' },
113 { "help", no_argument, 0, 'h' },
114 { "input-target", required_argument, 0, 'I' },
115 { "input-format", required_argument, 0, 'I' }, /* Obsolete */
116 { "linker", required_argument, 0, 'l' },
117 { "output-target", required_argument, 0, 'O' },
118 { "output-format", required_argument, 0, 'O' }, /* Obsolete */
119 { "version", no_argument, 0, 'V' },
120 { NULL, no_argument, 0, 0 }
123 /* Local routines. */
125 int main PARAMS ((int, char **));
127 static void show_usage PARAMS ((FILE *, int));
128 static const char *select_output_format PARAMS ((enum bfd_architecture,
129 unsigned long, boolean));
130 static void setup_sections PARAMS ((bfd *, asection *, PTR));
131 static void copy_sections PARAMS ((bfd *, asection *, PTR));
132 static void mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
135 static void default_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
138 static char *link_inputs PARAMS ((struct string_list *, char *));
141 static void i386_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
147 static void alpha_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
152 #ifdef NLMCONV_POWERPC
153 static void powerpc_build_stubs PARAMS ((bfd *, bfd *, asymbol ***, long *));
154 static void powerpc_resolve_stubs PARAMS ((bfd *, bfd *));
155 static void powerpc_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
160 /* The main routine. */
168 char *input_file = NULL;
169 const char *input_format = NULL;
170 const char *output_format = NULL;
171 const char *header_file = NULL;
173 Nlm_Internal_Fixed_Header fixed_hdr_struct;
174 Nlm_Internal_Variable_Header var_hdr_struct;
175 Nlm_Internal_Version_Header version_hdr_struct;
176 Nlm_Internal_Copyright_Header copyright_hdr_struct;
177 Nlm_Internal_Extended_Header extended_hdr_struct;
180 asymbol **newsyms, **outsyms;
181 long symcount, newsymalloc, newsymcount;
183 asection *text_sec, *bss_sec, *data_sec;
188 char inlead, outlead;
189 boolean gotstart, gotexit, gotcheck;
191 FILE *custom_data = NULL;
192 FILE *help_data = NULL;
193 FILE *message_data = NULL;
194 FILE *rpc_data = NULL;
195 FILE *shared_data = NULL;
196 size_t custom_size = 0;
197 size_t help_size = 0;
198 size_t message_size = 0;
199 size_t module_size = 0;
201 asection *custom_section = NULL;
202 asection *help_section = NULL;
203 asection *message_section = NULL;
204 asection *module_section = NULL;
205 asection *rpc_section = NULL;
206 asection *shared_section = NULL;
208 size_t shared_offset = 0;
209 size_t shared_size = 0;
210 Nlm_Internal_Fixed_Header sharedhdr;
215 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
216 setlocale (LC_MESSAGES, "");
218 #if defined (HAVE_SETLOCALE)
219 setlocale (LC_CTYPE, "");
221 bindtextdomain (PACKAGE, LOCALEDIR);
222 textdomain (PACKAGE);
224 program_name = argv[0];
225 xmalloc_set_program_name (program_name);
228 set_default_bfd_target ();
230 while ((opt = getopt_long (argc, argv, "dHhI:l:O:T:Vv", long_options,
241 show_usage (stdout, 0);
244 input_format = optarg;
250 output_format = optarg;
253 header_file = optarg;
257 print_version ("nlmconv");
262 show_usage (stderr, 1);
267 /* The input and output files may be named on the command line. */
271 input_file = argv[optind];
275 output_file = argv[optind];
278 show_usage (stderr, 1);
279 if (strcmp (input_file, output_file) == 0)
281 fatal (_("input and output files must be different"));
286 /* Initialize the header information to default values. */
287 fixed_hdr = &fixed_hdr_struct;
288 memset ((PTR) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct);
289 var_hdr = &var_hdr_struct;
290 memset ((PTR) &var_hdr_struct, 0, sizeof var_hdr_struct);
291 version_hdr = &version_hdr_struct;
292 memset ((PTR) &version_hdr_struct, 0, sizeof version_hdr_struct);
293 copyright_hdr = ©right_hdr_struct;
294 memset ((PTR) ©right_hdr_struct, 0, sizeof copyright_hdr_struct);
295 extended_hdr = &extended_hdr_struct;
296 memset ((PTR) &extended_hdr_struct, 0, sizeof extended_hdr_struct);
297 check_procedure = NULL;
300 exit_procedure = "_Stop";
301 export_symbols = NULL;
305 import_symbols = NULL;
308 sharelib_file = NULL;
309 start_procedure = "_Prelude";
315 /* Parse the header file (if there is one). */
316 if (header_file != NULL)
318 if (! nlmlex_file (header_file)
320 || parse_errors != 0)
324 if (input_files != NULL)
326 if (input_file != NULL)
328 fatal (_("input file named both on command line and with INPUT"));
330 if (input_files->next == NULL)
331 input_file = input_files->string;
333 input_file = link_inputs (input_files, ld_arg);
335 else if (input_file == NULL)
337 non_fatal (_("no input file"));
338 show_usage (stderr, 1);
341 inbfd = bfd_openr (input_file, input_format);
343 bfd_fatal (input_file);
345 if (! bfd_check_format_matches (inbfd, bfd_object, &matching))
347 bfd_nonfatal (input_file);
348 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
350 list_matching_formats (matching);
356 if (output_format == NULL)
357 output_format = select_output_format (bfd_get_arch (inbfd),
358 bfd_get_mach (inbfd),
359 bfd_big_endian (inbfd));
361 assert (output_format != NULL);
363 /* Use the output file named on the command line if it exists.
364 Otherwise use the file named in the OUTPUT statement. */
365 if (output_file == NULL)
367 non_fatal (_("no name for output file"));
368 show_usage (stderr, 1);
371 outbfd = bfd_openw (output_file, output_format);
373 bfd_fatal (output_file);
374 if (! bfd_set_format (outbfd, bfd_object))
375 bfd_fatal (output_file);
377 assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour);
379 if (bfd_arch_get_compatible (inbfd, outbfd) == NULL)
380 non_fatal (_("warning: input and output formats are not compatible"));
382 /* Move the values read from the command file into outbfd. */
383 *nlm_fixed_header (outbfd) = fixed_hdr_struct;
384 *nlm_variable_header (outbfd) = var_hdr_struct;
385 *nlm_version_header (outbfd) = version_hdr_struct;
386 *nlm_copyright_header (outbfd) = copyright_hdr_struct;
387 *nlm_extended_header (outbfd) = extended_hdr_struct;
389 /* Start copying the input BFD to the output BFD. */
390 if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd)))
391 bfd_fatal (bfd_get_filename (outbfd));
393 symsize = bfd_get_symtab_upper_bound (inbfd);
395 bfd_fatal (input_file);
396 symbols = (asymbol **) xmalloc (symsize);
397 symcount = bfd_canonicalize_symtab (inbfd, symbols);
399 bfd_fatal (input_file);
401 /* Make sure we have a .bss section. */
402 bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME);
405 bss_sec = bfd_make_section (outbfd, NLM_UNINITIALIZED_DATA_NAME);
407 || ! bfd_set_section_flags (outbfd, bss_sec, SEC_ALLOC)
408 || ! bfd_set_section_alignment (outbfd, bss_sec, 1))
409 bfd_fatal (_("make .bss section"));
412 /* We store the original section names in the .nlmsections section,
413 so that programs which understand it can resurrect the original
414 sections from the NLM. We will put a pointer to .nlmsections in
415 the NLM header area. */
416 secsec = bfd_make_section (outbfd, ".nlmsections");
418 bfd_fatal (_("make .nlmsections section"));
419 if (! bfd_set_section_flags (outbfd, secsec, SEC_HAS_CONTENTS))
420 bfd_fatal (_("set .nlmsections flags"));
422 #ifdef NLMCONV_POWERPC
423 /* For PowerPC NetWare we need to build stubs for calls to undefined
424 symbols. Because each stub requires an entry in the TOC section
425 which must be at the same location as other entries in the TOC
426 section, we must do this before determining where the TOC section
427 goes in setup_sections. */
428 if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
429 powerpc_build_stubs (inbfd, outbfd, &symbols, &symcount);
432 /* Set up the sections. */
433 bfd_map_over_sections (inbfd, setup_sections, (PTR) outbfd);
435 text_sec = bfd_get_section_by_name (outbfd, NLM_CODE_NAME);
437 /* The .bss section immediately follows the .data section. */
438 data_sec = bfd_get_section_by_name (outbfd, NLM_INITIALIZED_DATA_NAME);
439 if (data_sec != NULL)
443 vma = bfd_get_section_size_before_reloc (data_sec);
444 align = 1 << bss_sec->alignment_power;
445 add = ((vma + align - 1) &~ (align - 1)) - vma;
447 if (! bfd_set_section_vma (outbfd, bss_sec, vma))
448 bfd_fatal (_("set .bss vma"));
451 bfd_size_type data_size;
453 data_size = bfd_get_section_size_before_reloc (data_sec);
454 if (! bfd_set_section_size (outbfd, data_sec, data_size + add))
455 bfd_fatal (_("set .data size"));
459 /* Adjust symbol information. */
460 inlead = bfd_get_symbol_leading_char (inbfd);
461 outlead = bfd_get_symbol_leading_char (outbfd);
466 newsyms = (asymbol **) xmalloc (newsymalloc * sizeof (asymbol *));
469 for (i = 0; i < symcount; i++)
471 register asymbol *sym;
475 /* Add or remove a leading underscore. */
476 if (inlead != outlead)
480 if (bfd_asymbol_name (sym)[0] == inlead)
488 new = xmalloc (strlen (bfd_asymbol_name (sym)) + 1);
490 strcpy (new + 1, bfd_asymbol_name (sym) + 1);
499 new = xmalloc (strlen (bfd_asymbol_name (sym)) + 2);
501 strcpy (new + 1, bfd_asymbol_name (sym));
506 /* NLM's have an uninitialized data section, but they do not
507 have a common section in the Unix sense. Move all common
508 symbols into the .bss section, and mark them as exported. */
509 if (bfd_is_com_section (bfd_get_section (sym)))
513 sym->section = bss_sec;
515 sym->value = bss_sec->_raw_size;
516 bss_sec->_raw_size += size;
517 align = 1 << bss_sec->alignment_power;
518 bss_sec->_raw_size = (bss_sec->_raw_size + align - 1) &~ (align - 1);
519 sym->flags |= BSF_EXPORT | BSF_GLOBAL;
521 else if (bfd_get_section (sym)->output_section != NULL)
523 /* Move the symbol into the output section. */
524 sym->value += bfd_get_section (sym)->output_offset;
525 sym->section = bfd_get_section (sym)->output_section;
526 /* This is no longer a section symbol. */
527 sym->flags &=~ BSF_SECTION_SYM;
530 /* Force _edata and _end to be defined. This would normally be
531 done by the linker, but the manipulation of the common
532 symbols will confuse it. */
533 if ((sym->flags & BSF_DEBUGGING) == 0
534 && bfd_asymbol_name (sym)[0] == '_'
535 && bfd_is_und_section (bfd_get_section (sym)))
537 if (strcmp (bfd_asymbol_name (sym), "_edata") == 0)
539 sym->section = bss_sec;
542 if (strcmp (bfd_asymbol_name (sym), "_end") == 0)
544 sym->section = bss_sec;
548 #ifdef NLMCONV_POWERPC
549 /* For PowerPC NetWare, we define __GOT0. This is the start
550 of the .got section. */
551 if (bfd_get_arch (inbfd) == bfd_arch_powerpc
552 && strcmp (bfd_asymbol_name (sym), "__GOT0") == 0)
556 got_sec = bfd_get_section_by_name (inbfd, ".got");
557 assert (got_sec != (asection *) NULL);
558 sym->value = got_sec->output_offset;
559 sym->section = got_sec->output_section;
564 /* If this is a global symbol, check the export list. */
565 if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0)
567 register struct string_list *l;
570 /* Unfortunately, a symbol can appear multiple times on the
571 export list, with and without prefixes. */
573 for (l = export_symbols; l != NULL; l = l->next)
575 if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
581 zbase = strchr (l->string, '@');
583 && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
585 /* We must add a symbol with this prefix. */
586 if (newsymcount >= newsymalloc)
589 newsyms = ((asymbol **)
590 xrealloc ((PTR) newsyms,
592 * sizeof (asymbol *))));
594 newsyms[newsymcount] =
595 (asymbol *) xmalloc (sizeof (asymbol));
596 *newsyms[newsymcount] = *sym;
597 newsyms[newsymcount]->name = l->string;
604 /* The unmodified symbol is actually not exported at
606 sym->flags &=~ (BSF_GLOBAL | BSF_EXPORT);
607 sym->flags |= BSF_LOCAL;
611 /* If it's an undefined symbol, see if it's on the import list.
612 Change the prefix if necessary. */
613 if (bfd_is_und_section (bfd_get_section (sym)))
615 register struct string_list *l;
617 for (l = import_symbols; l != NULL; l = l->next)
619 if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
625 zbase = strchr (l->string, '@');
627 && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
629 sym->name = l->string;
635 non_fatal (_("warning: symbol %s imported but not in import list"),
636 bfd_asymbol_name (sym));
639 /* See if it's one of the special named symbols. */
640 if ((sym->flags & BSF_DEBUGGING) == 0)
644 /* FIXME: If these symbols are not in the .text section, we
645 add the .text section size to the value. This may not be
646 correct for all targets. I'm not sure how this should
647 really be handled. */
648 if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0)
650 val = bfd_asymbol_value (sym);
651 if (bfd_get_section (sym) == data_sec
652 && text_sec != (asection *) NULL)
653 val += bfd_section_size (outbfd, text_sec);
654 if (! bfd_set_start_address (outbfd, val))
655 bfd_fatal (_("set start address"));
658 if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0)
660 val = bfd_asymbol_value (sym);
661 if (bfd_get_section (sym) == data_sec
662 && text_sec != (asection *) NULL)
663 val += bfd_section_size (outbfd, text_sec);
664 nlm_fixed_header (outbfd)->exitProcedureOffset = val;
667 if (check_procedure != NULL
668 && strcmp (bfd_asymbol_name (sym), check_procedure) == 0)
670 val = bfd_asymbol_value (sym);
671 if (bfd_get_section (sym) == data_sec
672 && text_sec != (asection *) NULL)
673 val += bfd_section_size (outbfd, text_sec);
674 nlm_fixed_header (outbfd)->checkUnloadProcedureOffset = val;
682 endsym->value = bfd_get_section_size_before_reloc (bss_sec);
684 /* FIXME: If any relocs referring to _end use inplace addends,
685 then I think they need to be updated. This is handled by
686 i386_mangle_relocs. Is it needed for any other object
690 if (newsymcount == 0)
694 outsyms = (asymbol **) xmalloc ((symcount + newsymcount + 1)
695 * sizeof (asymbol *));
696 memcpy (outsyms, symbols, symcount * sizeof (asymbol *));
697 memcpy (outsyms + symcount, newsyms, newsymcount * sizeof (asymbol *));
698 outsyms[symcount + newsymcount] = NULL;
701 bfd_set_symtab (outbfd, outsyms, symcount + newsymcount);
704 non_fatal (_("warning: START procedure %s not defined"), start_procedure);
706 non_fatal (_("warning: EXIT procedure %s not defined"), exit_procedure);
707 if (check_procedure != NULL && ! gotcheck)
708 non_fatal (_("warning: CHECK procedure %s not defined"), check_procedure);
710 /* Add additional sections required for the header information. */
711 if (custom_file != NULL)
713 custom_data = fopen (custom_file, "r");
714 if (custom_data == NULL
715 || fstat (fileno (custom_data), &st) < 0)
717 fprintf (stderr, "%s:%s: %s\n", program_name, custom_file,
723 custom_size = st.st_size;
724 custom_section = bfd_make_section (outbfd, ".nlmcustom");
725 if (custom_section == NULL
726 || ! bfd_set_section_size (outbfd, custom_section, custom_size)
727 || ! bfd_set_section_flags (outbfd, custom_section,
729 bfd_fatal (_("custom section"));
732 if (help_file != NULL)
734 help_data = fopen (help_file, "r");
735 if (help_data == NULL
736 || fstat (fileno (help_data), &st) < 0)
738 fprintf (stderr, "%s:%s: %s\n", program_name, help_file,
744 help_size = st.st_size;
745 help_section = bfd_make_section (outbfd, ".nlmhelp");
746 if (help_section == NULL
747 || ! bfd_set_section_size (outbfd, help_section, help_size)
748 || ! bfd_set_section_flags (outbfd, help_section,
750 bfd_fatal (_("help section"));
751 strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
754 if (message_file != NULL)
756 message_data = fopen (message_file, "r");
757 if (message_data == NULL
758 || fstat (fileno (message_data), &st) < 0)
760 fprintf (stderr, "%s:%s: %s\n", program_name, message_file,
766 message_size = st.st_size;
767 message_section = bfd_make_section (outbfd, ".nlmmessages");
768 if (message_section == NULL
769 || ! bfd_set_section_size (outbfd, message_section, message_size)
770 || ! bfd_set_section_flags (outbfd, message_section,
772 bfd_fatal (_("message section"));
773 strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
778 struct string_list *l;
781 for (l = modules; l != NULL; l = l->next)
782 module_size += strlen (l->string) + 1;
783 module_section = bfd_make_section (outbfd, ".nlmmodules");
784 if (module_section == NULL
785 || ! bfd_set_section_size (outbfd, module_section, module_size)
786 || ! bfd_set_section_flags (outbfd, module_section,
788 bfd_fatal (_("module section"));
790 if (rpc_file != NULL)
792 rpc_data = fopen (rpc_file, "r");
794 || fstat (fileno (rpc_data), &st) < 0)
796 fprintf (stderr, "%s:%s: %s\n", program_name, rpc_file,
802 rpc_size = st.st_size;
803 rpc_section = bfd_make_section (outbfd, ".nlmrpc");
804 if (rpc_section == NULL
805 || ! bfd_set_section_size (outbfd, rpc_section, rpc_size)
806 || ! bfd_set_section_flags (outbfd, rpc_section,
808 bfd_fatal (_("rpc section"));
809 strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
812 if (sharelib_file != NULL)
814 sharedbfd = bfd_openr (sharelib_file, output_format);
815 if (sharedbfd == NULL
816 || ! bfd_check_format (sharedbfd, bfd_object))
818 fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
819 bfd_errmsg (bfd_get_error ()));
820 sharelib_file = NULL;
824 sharedhdr = *nlm_fixed_header (sharedbfd);
825 bfd_close (sharedbfd);
826 shared_data = fopen (sharelib_file, "r");
827 if (shared_data == NULL
828 || (fstat (fileno (shared_data), &st) < 0))
830 fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
832 sharelib_file = NULL;
836 /* If we were clever, we could just copy out the
837 sections of the shared library which we actually
838 need. However, we would have to figure out the sizes
839 of the external and public information, and that can
840 not be done without reading through them. */
841 if (sharedhdr.uninitializedDataSize > 0)
843 /* There is no place to record this information. */
844 non_fatal (_("%s: warning: shared libraries can not have uninitialized data"),
847 shared_offset = st.st_size;
848 if (shared_offset > (size_t) sharedhdr.codeImageOffset)
849 shared_offset = sharedhdr.codeImageOffset;
850 if (shared_offset > (size_t) sharedhdr.dataImageOffset)
851 shared_offset = sharedhdr.dataImageOffset;
852 if (shared_offset > (size_t) sharedhdr.relocationFixupOffset)
853 shared_offset = sharedhdr.relocationFixupOffset;
854 if (shared_offset > (size_t) sharedhdr.externalReferencesOffset)
855 shared_offset = sharedhdr.externalReferencesOffset;
856 if (shared_offset > (size_t) sharedhdr.publicsOffset)
857 shared_offset = sharedhdr.publicsOffset;
858 shared_size = st.st_size - shared_offset;
859 shared_section = bfd_make_section (outbfd, ".nlmshared");
860 if (shared_section == NULL
861 || ! bfd_set_section_size (outbfd, shared_section,
863 || ! bfd_set_section_flags (outbfd, shared_section,
865 bfd_fatal (_("shared section"));
866 strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
871 /* Check whether a version was given. */
872 if (strncmp (version_hdr->stamp, "VeRsIoN#", 8) != 0)
873 non_fatal (_("warning: No version number given"));
875 /* At least for now, always create an extended header, because that
876 is what NLMLINK does. */
877 strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
879 strncpy (nlm_cygnus_ext_header (outbfd)->stamp, "CyGnUsEx", 8);
881 /* If the date was not given, force it in. */
882 if (nlm_version_header (outbfd)->month == 0
883 && nlm_version_header (outbfd)->day == 0
884 && nlm_version_header (outbfd)->year == 0)
890 ptm = localtime (&now);
891 nlm_version_header (outbfd)->month = ptm->tm_mon + 1;
892 nlm_version_header (outbfd)->day = ptm->tm_mday;
893 nlm_version_header (outbfd)->year = ptm->tm_year + 1900;
894 strncpy (version_hdr->stamp, "VeRsIoN#", 8);
897 #ifdef NLMCONV_POWERPC
898 /* Resolve the stubs we build for PowerPC NetWare. */
899 if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
900 powerpc_resolve_stubs (inbfd, outbfd);
903 /* Copy over the sections. */
904 bfd_map_over_sections (inbfd, copy_sections, (PTR) outbfd);
906 /* Finish up the header information. */
907 if (custom_file != NULL)
911 data = xmalloc (custom_size);
912 if (fread (data, 1, custom_size, custom_data) != custom_size)
913 non_fatal (_("%s: read: %s"), custom_file, strerror (errno));
916 if (! bfd_set_section_contents (outbfd, custom_section, data,
917 (file_ptr) 0, custom_size))
918 bfd_fatal (_("custom section"));
919 nlm_fixed_header (outbfd)->customDataOffset =
920 custom_section->filepos;
921 nlm_fixed_header (outbfd)->customDataSize = custom_size;
927 /* As a special hack, the backend recognizes a debugInfoOffset
928 of -1 to mean that it should not output any debugging
929 information. This can not be handling by fiddling with the
930 symbol table because exported symbols appear in both the
931 export information and the debugging information. */
932 nlm_fixed_header (outbfd)->debugInfoOffset = (file_ptr) -1;
934 if (map_file != NULL)
935 non_fatal (_("warning: MAP and FULLMAP are not supported; try ld -M"));
936 if (help_file != NULL)
940 data = xmalloc (help_size);
941 if (fread (data, 1, help_size, help_data) != help_size)
942 non_fatal (_("%s: read: %s"), help_file, strerror (errno));
945 if (! bfd_set_section_contents (outbfd, help_section, data,
946 (file_ptr) 0, help_size))
947 bfd_fatal (_("help section"));
948 nlm_extended_header (outbfd)->helpFileOffset =
949 help_section->filepos;
950 nlm_extended_header (outbfd)->helpFileLength = help_size;
954 if (message_file != NULL)
958 data = xmalloc (message_size);
959 if (fread (data, 1, message_size, message_data) != message_size)
960 non_fatal (_("%s: read: %s"), message_file, strerror (errno));
963 if (! bfd_set_section_contents (outbfd, message_section, data,
964 (file_ptr) 0, message_size))
965 bfd_fatal (_("message section"));
966 nlm_extended_header (outbfd)->messageFileOffset =
967 message_section->filepos;
968 nlm_extended_header (outbfd)->messageFileLength = message_size;
970 /* FIXME: Are these offsets correct on all platforms? Are
971 they 32 bits on all platforms? What endianness? */
972 nlm_extended_header (outbfd)->languageID =
973 bfd_h_get_32 (outbfd, (bfd_byte *) data + 106);
974 nlm_extended_header (outbfd)->messageCount =
975 bfd_h_get_32 (outbfd, (bfd_byte *) data + 110);
983 struct string_list *l;
986 data = xmalloc (module_size);
988 set = (unsigned char *) data;
989 for (l = modules; l != NULL; l = l->next)
991 *set = strlen (l->string);
992 strncpy (set + 1, l->string, *set);
996 if (! bfd_set_section_contents (outbfd, module_section, data,
997 (file_ptr) 0, module_size))
998 bfd_fatal (_("module section"));
999 nlm_fixed_header (outbfd)->moduleDependencyOffset =
1000 module_section->filepos;
1001 nlm_fixed_header (outbfd)->numberOfModuleDependencies = c;
1003 if (rpc_file != NULL)
1007 data = xmalloc (rpc_size);
1008 if (fread (data, 1, rpc_size, rpc_data) != rpc_size)
1009 non_fatal (_("%s: read: %s"), rpc_file, strerror (errno));
1012 if (! bfd_set_section_contents (outbfd, rpc_section, data,
1013 (file_ptr) 0, rpc_size))
1014 bfd_fatal (_("rpc section"));
1015 nlm_extended_header (outbfd)->RPCDataOffset =
1016 rpc_section->filepos;
1017 nlm_extended_header (outbfd)->RPCDataLength = rpc_size;
1021 if (sharelib_file != NULL)
1025 data = xmalloc (shared_size);
1026 if (fseek (shared_data, shared_offset, SEEK_SET) != 0
1027 || fread (data, 1, shared_size, shared_data) != shared_size)
1028 non_fatal (_("%s: read: %s"), sharelib_file, strerror (errno));
1031 if (! bfd_set_section_contents (outbfd, shared_section, data,
1032 (file_ptr) 0, shared_size))
1033 bfd_fatal (_("shared section"));
1035 nlm_extended_header (outbfd)->sharedCodeOffset =
1036 sharedhdr.codeImageOffset - shared_offset + shared_section->filepos;
1037 nlm_extended_header (outbfd)->sharedCodeLength =
1038 sharedhdr.codeImageSize;
1039 nlm_extended_header (outbfd)->sharedDataOffset =
1040 sharedhdr.dataImageOffset - shared_offset + shared_section->filepos;
1041 nlm_extended_header (outbfd)->sharedDataLength =
1042 sharedhdr.dataImageSize;
1043 nlm_extended_header (outbfd)->sharedRelocationFixupOffset =
1044 (sharedhdr.relocationFixupOffset
1046 + shared_section->filepos);
1047 nlm_extended_header (outbfd)->sharedRelocationFixupCount =
1048 sharedhdr.numberOfRelocationFixups;
1049 nlm_extended_header (outbfd)->sharedExternalReferenceOffset =
1050 (sharedhdr.externalReferencesOffset
1052 + shared_section->filepos);
1053 nlm_extended_header (outbfd)->sharedExternalReferenceCount =
1054 sharedhdr.numberOfExternalReferences;
1055 nlm_extended_header (outbfd)->sharedPublicsOffset =
1056 sharedhdr.publicsOffset - shared_offset + shared_section->filepos;
1057 nlm_extended_header (outbfd)->sharedPublicsCount =
1058 sharedhdr.numberOfPublics;
1059 nlm_extended_header (outbfd)->sharedDebugRecordOffset =
1060 sharedhdr.debugInfoOffset - shared_offset + shared_section->filepos;
1061 nlm_extended_header (outbfd)->sharedDebugRecordCount =
1062 sharedhdr.numberOfDebugRecords;
1063 nlm_extended_header (outbfd)->SharedInitializationOffset =
1064 sharedhdr.codeStartOffset;
1065 nlm_extended_header (outbfd)->SharedExitProcedureOffset =
1066 sharedhdr.exitProcedureOffset;
1069 len = strlen (output_file);
1070 if (len > NLM_MODULE_NAME_SIZE - 2)
1071 len = NLM_MODULE_NAME_SIZE - 2;
1072 nlm_fixed_header (outbfd)->moduleName[0] = len;
1074 strncpy (nlm_fixed_header (outbfd)->moduleName + 1, output_file,
1075 NLM_MODULE_NAME_SIZE - 2);
1076 nlm_fixed_header (outbfd)->moduleName[NLM_MODULE_NAME_SIZE - 1] = '\0';
1077 for (modname = nlm_fixed_header (outbfd)->moduleName;
1080 *modname = TOUPPER (*modname);
1082 strncpy (nlm_variable_header (outbfd)->oldThreadName, " LONG",
1083 NLM_OLD_THREAD_NAME_LENGTH);
1085 nlm_cygnus_ext_header (outbfd)->offset = secsec->filepos;
1086 nlm_cygnus_ext_header (outbfd)->length = bfd_section_size (outbfd, secsec);
1088 if (! bfd_close (outbfd))
1089 bfd_fatal (output_file);
1090 if (! bfd_close (inbfd))
1091 bfd_fatal (input_file);
1093 if (unlink_on_exit != NULL)
1094 unlink (unlink_on_exit);
1100 /* Show a usage message and exit. */
1103 show_usage (file, status)
1107 fprintf (file, _("Usage: %s [option(s)] [in-file [out-file]]\n"), program_name);
1108 fprintf (file, _(" Convert an object file into a NetWare Loadable Module\n"));
1109 fprintf (file, _(" The options are:\n\
1110 -I --input-target=<bfdname> Set the input binary file format\n\
1111 -O --output-target=<bfdname> Set the output binary file format\n\
1112 -T --header-file=<file> Read <file> for NLM header information\n\
1113 -l --linker=<linker> Use <linker> for any linking\n\
1114 -d --debug Display on stderr the linker command line\n\
1115 -h --help Display this information\n\
1116 -v --version Display the program's version\n\
1119 fprintf (file, _("Report bugs to %s\n"), REPORT_BUGS_TO);
1123 /* Select the output format based on the input architecture, machine,
1124 and endianness. This chooses the appropriate NLM target. */
1127 select_output_format (arch, mach, bigendian)
1128 enum bfd_architecture arch;
1130 boolean bigendian ATTRIBUTE_UNUSED;
1136 return "nlm32-i386";
1138 #ifdef NLMCONV_SPARC
1139 case bfd_arch_sparc:
1140 return "nlm32-sparc";
1142 #ifdef NLMCONV_ALPHA
1143 case bfd_arch_alpha:
1144 return "nlm32-alpha";
1146 #ifdef NLMCONV_POWERPC
1147 case bfd_arch_powerpc:
1148 return "nlm32-powerpc";
1151 fatal (_("support not compiled in for %s"),
1152 bfd_printable_arch_mach (arch, mach));
1157 /* The BFD sections are copied in two passes. This function selects
1158 the output section for each input section, and sets up the section
1162 setup_sections (inbfd, insec, data_ptr)
1163 bfd *inbfd ATTRIBUTE_UNUSED;
1167 bfd *outbfd = (bfd *) data_ptr;
1169 const char *outname;
1172 bfd_size_type align;
1174 bfd_size_type secsecsize;
1176 f = bfd_get_section_flags (inbfd, insec);
1178 outname = NLM_CODE_NAME;
1179 else if ((f & SEC_LOAD) && (f & SEC_HAS_CONTENTS))
1180 outname = NLM_INITIALIZED_DATA_NAME;
1181 else if (f & SEC_ALLOC)
1182 outname = NLM_UNINITIALIZED_DATA_NAME;
1184 outname = bfd_section_name (inbfd, insec);
1186 outsec = bfd_get_section_by_name (outbfd, outname);
1189 outsec = bfd_make_section (outbfd, outname);
1191 bfd_fatal (_("make section"));
1194 insec->output_section = outsec;
1196 offset = bfd_section_size (outbfd, outsec);
1197 align = 1 << bfd_section_alignment (inbfd, insec);
1198 add = ((offset + align - 1) &~ (align - 1)) - offset;
1199 insec->output_offset = offset + add;
1201 if (! bfd_set_section_size (outbfd, outsec,
1202 (bfd_section_size (outbfd, outsec)
1203 + bfd_section_size (inbfd, insec)
1205 bfd_fatal (_("set section size"));
1207 if ((bfd_section_alignment (inbfd, insec)
1208 > bfd_section_alignment (outbfd, outsec))
1209 && ! bfd_set_section_alignment (outbfd, outsec,
1210 bfd_section_alignment (inbfd, insec)))
1211 bfd_fatal (_("set section alignment"));
1213 if (! bfd_set_section_flags (outbfd, outsec,
1214 f | bfd_get_section_flags (outbfd, outsec)))
1215 bfd_fatal (_("set section flags"));
1217 bfd_set_reloc (outbfd, outsec, (arelent **) NULL, 0);
1219 /* For each input section we allocate space for an entry in
1221 secsecsize = bfd_section_size (outbfd, secsec);
1222 secsecsize += strlen (bfd_section_name (inbfd, insec)) + 1;
1223 secsecsize = (secsecsize + 3) &~ 3;
1225 if (! bfd_set_section_size (outbfd, secsec, secsecsize))
1226 bfd_fatal (_("set .nlmsections size"));
1229 /* Copy the section contents. */
1232 copy_sections (inbfd, insec, data_ptr)
1237 static bfd_size_type secsecoff = 0;
1238 bfd *outbfd = (bfd *) data_ptr;
1247 inname = bfd_section_name (inbfd, insec);
1249 outsec = insec->output_section;
1250 assert (outsec != NULL);
1252 size = bfd_get_section_size_before_reloc (insec);
1254 /* FIXME: Why are these necessary? */
1255 insec->_cooked_size = insec->_raw_size;
1256 insec->reloc_done = true;
1258 if ((bfd_get_section_flags (inbfd, insec) & SEC_HAS_CONTENTS) == 0)
1262 contents = xmalloc (size);
1263 if (! bfd_get_section_contents (inbfd, insec, contents,
1264 (file_ptr) 0, size))
1265 bfd_fatal (bfd_get_filename (inbfd));
1268 reloc_size = bfd_get_reloc_upper_bound (inbfd, insec);
1270 bfd_fatal (bfd_get_filename (inbfd));
1271 if (reloc_size != 0)
1276 relocs = (arelent **) xmalloc (reloc_size);
1277 reloc_count = bfd_canonicalize_reloc (inbfd, insec, relocs, symbols);
1278 if (reloc_count < 0)
1279 bfd_fatal (bfd_get_filename (inbfd));
1280 mangle_relocs (outbfd, insec, &relocs, &reloc_count, (char *) contents,
1283 /* FIXME: refers to internal BFD fields. */
1284 if (outsec->orelocation != (arelent **) NULL)
1286 bfd_size_type total_count;
1289 total_count = reloc_count + outsec->reloc_count;
1290 combined = (arelent **) xmalloc (total_count * sizeof (arelent *));
1291 memcpy (combined, outsec->orelocation,
1292 outsec->reloc_count * sizeof (arelent *));
1293 memcpy (combined + outsec->reloc_count, relocs,
1294 (size_t) (reloc_count * sizeof (arelent *)));
1295 free (outsec->orelocation);
1296 reloc_count = total_count;
1300 bfd_set_reloc (outbfd, outsec, relocs, reloc_count);
1303 if (contents != NULL)
1305 if (! bfd_set_section_contents (outbfd, outsec, contents,
1306 insec->output_offset, size))
1307 bfd_fatal (bfd_get_filename (outbfd));
1311 /* Add this section to .nlmsections. */
1312 if (! bfd_set_section_contents (outbfd, secsec, (PTR) inname, secsecoff,
1313 strlen (inname) + 1))
1314 bfd_fatal (_("set .nlmsection contents"));
1315 secsecoff += strlen (inname) + 1;
1317 add = ((secsecoff + 3) &~ 3) - secsecoff;
1320 bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
1321 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, add))
1322 bfd_fatal (_("set .nlmsection contents"));
1326 if (contents != NULL)
1327 bfd_h_put_32 (outbfd, (bfd_vma) outsec->filepos, buf);
1329 bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
1330 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
1331 bfd_fatal (_("set .nlmsection contents"));
1334 bfd_h_put_32 (outbfd, (bfd_vma) size, buf);
1335 if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
1336 bfd_fatal (_("set .nlmsection contents"));
1340 /* Some, perhaps all, NetWare targets require changing the relocs used
1341 by the input formats. */
1344 mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
1348 arelent ***relocs_ptr;
1349 long *reloc_count_ptr;
1351 bfd_size_type contents_size;
1353 switch (bfd_get_arch (outbfd))
1357 i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1358 contents, contents_size);
1361 #ifdef NLMCONV_ALPHA
1362 case bfd_arch_alpha:
1363 alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1364 contents, contents_size);
1367 #ifdef NLMCONV_POWERPC
1368 case bfd_arch_powerpc:
1369 powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1370 contents, contents_size);
1374 default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
1375 contents, contents_size);
1380 /* By default all we need to do for relocs is change the address by
1381 the output_offset. */
1385 default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
1387 bfd *outbfd ATTRIBUTE_UNUSED;
1389 arelent ***relocs_ptr;
1390 long *reloc_count_ptr;
1391 char *contents ATTRIBUTE_UNUSED;
1392 bfd_size_type contents_size ATTRIBUTE_UNUSED;
1394 if (insec->output_offset != 0)
1397 register arelent **relocs;
1400 reloc_count = *reloc_count_ptr;
1401 relocs = *relocs_ptr;
1402 for (i = 0; i < reloc_count; i++, relocs++)
1403 (*relocs)->address += insec->output_offset;
1409 /* NetWare on the i386 supports a restricted set of relocs, which are
1410 different from those used on other i386 targets. This routine
1411 converts the relocs. It is, obviously, very target dependent. At
1412 the moment, the nlm32-i386 backend performs similar translations;
1413 however, it is more reliable and efficient to do them here. */
1415 static reloc_howto_type nlm_i386_pcrel_howto =
1416 HOWTO (1, /* type */
1418 2, /* size (0 = byte, 1 = short, 2 = long) */
1420 true, /* pc_relative */
1422 complain_overflow_signed, /* complain_on_overflow */
1423 0, /* special_function */
1424 "DISP32", /* name */
1425 true, /* partial_inplace */
1426 0xffffffff, /* src_mask */
1427 0xffffffff, /* dst_mask */
1428 true); /* pcrel_offset */
1431 i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
1435 arelent ***relocs_ptr;
1436 long *reloc_count_ptr;
1438 bfd_size_type contents_size;
1440 long reloc_count, i;
1443 reloc_count = *reloc_count_ptr;
1444 relocs = *relocs_ptr;
1445 for (i = 0; i < reloc_count; i++)
1449 bfd_size_type address;
1453 sym = *rel->sym_ptr_ptr;
1455 /* We're moving the relocs from the input section to the output
1456 section, so we must adjust the address accordingly. */
1457 address = rel->address;
1458 rel->address += insec->output_offset;
1460 /* Note that no serious harm will ensue if we fail to change a
1461 reloc. The backend will fail when writing out the reloc. */
1463 /* Make sure this reloc is within the data we have. We use only
1464 4 byte relocs here, so we insist on having 4 bytes. */
1465 if (address + 4 > contents_size)
1468 /* A PC relative reloc entirely within a single section is
1469 completely unnecessary. This can be generated by ld -r. */
1470 if (sym == insec->symbol
1471 && rel->howto != NULL
1472 && rel->howto->pc_relative
1473 && ! rel->howto->pcrel_offset)
1477 memmove (relocs, relocs + 1,
1478 (size_t) ((reloc_count - i) * sizeof (arelent *)));
1482 /* Get the amount the relocation will add in. */
1483 addend = rel->addend + sym->value;
1485 /* NetWare doesn't support PC relative relocs against defined
1486 symbols, so we have to eliminate them by doing the relocation
1487 now. We can only do this if the reloc is within a single
1489 if (rel->howto != NULL
1490 && rel->howto->pc_relative
1491 && bfd_get_section (sym) == insec->output_section)
1495 if (rel->howto->pcrel_offset)
1498 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1500 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1504 memmove (relocs, relocs + 1,
1505 (size_t) ((reloc_count - i) * sizeof (arelent *)));
1509 /* NetWare doesn't support reloc addends, so we get rid of them
1510 here by simply adding them into the object data. We handle
1511 the symbol value, if any, the same way. */
1513 && rel->howto != NULL
1514 && rel->howto->rightshift == 0
1515 && rel->howto->size == 2
1516 && rel->howto->bitsize == 32
1517 && rel->howto->bitpos == 0
1518 && rel->howto->src_mask == 0xffffffff
1519 && rel->howto->dst_mask == 0xffffffff)
1523 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1525 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1527 /* Adjust the reloc for the changes we just made. */
1529 if (! bfd_is_und_section (bfd_get_section (sym)))
1530 rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
1533 /* NetWare uses a reloc with pcrel_offset set. We adjust
1534 pc_relative relocs accordingly. We are going to change the
1535 howto field, so we can only do this if the current one is
1536 compatible. We should check that special_function is NULL
1537 here, but at the moment coff-i386 uses a special_function
1538 which does not affect what we are doing here. */
1539 if (rel->howto != NULL
1540 && rel->howto->pc_relative
1541 && ! rel->howto->pcrel_offset
1542 && rel->howto->rightshift == 0
1543 && rel->howto->size == 2
1544 && rel->howto->bitsize == 32
1545 && rel->howto->bitpos == 0
1546 && rel->howto->src_mask == 0xffffffff
1547 && rel->howto->dst_mask == 0xffffffff)
1551 /* When pcrel_offset is not set, it means that the negative
1552 of the address of the memory location is stored in the
1553 memory location. We must add it back in. */
1554 val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
1556 bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
1558 /* We must change to a new howto. */
1559 rel->howto = &nlm_i386_pcrel_howto;
1564 #endif /* NLMCONV_I386 */
1566 #ifdef NLMCONV_ALPHA
1568 /* On the Alpha the first reloc for every section must be a special
1569 relocs which hold the GP address. Also, the first reloc in the
1570 file must be a special reloc which holds the address of the .lita
1573 static reloc_howto_type nlm32_alpha_nw_howto =
1574 HOWTO (ALPHA_R_NW_RELOC, /* type */
1576 0, /* size (0 = byte, 1 = short, 2 = long) */
1578 false, /* pc_relative */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 0, /* special_function */
1582 "NW_RELOC", /* name */
1583 false, /* partial_inplace */
1586 false); /* pcrel_offset */
1590 alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
1594 register arelent ***relocs_ptr;
1595 long *reloc_count_ptr;
1596 char *contents ATTRIBUTE_UNUSED;
1597 bfd_size_type contents_size ATTRIBUTE_UNUSED;
1599 long old_reloc_count;
1600 arelent **old_relocs;
1601 register arelent **relocs;
1603 old_reloc_count = *reloc_count_ptr;
1604 old_relocs = *relocs_ptr;
1605 relocs = (arelent **) xmalloc ((old_reloc_count + 3) * sizeof (arelent *));
1606 *relocs_ptr = relocs;
1608 if (nlm_alpha_backend_data (outbfd)->lita_address == 0)
1611 asection *lita_section;
1613 inbfd = insec->owner;
1614 lita_section = bfd_get_section_by_name (inbfd, _LITA);
1615 if (lita_section != (asection *) NULL)
1617 nlm_alpha_backend_data (outbfd)->lita_address =
1618 bfd_get_section_vma (inbfd, lita_section);
1619 nlm_alpha_backend_data (outbfd)->lita_size =
1620 bfd_section_size (inbfd, lita_section);
1624 /* Avoid outputting this reloc again. */
1625 nlm_alpha_backend_data (outbfd)->lita_address = 4;
1628 *relocs = (arelent *) xmalloc (sizeof (arelent));
1629 (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1630 (*relocs)->address = nlm_alpha_backend_data (outbfd)->lita_address;
1631 (*relocs)->addend = nlm_alpha_backend_data (outbfd)->lita_size + 1;
1632 (*relocs)->howto = &nlm32_alpha_nw_howto;
1634 ++(*reloc_count_ptr);
1637 /* Get the GP value from bfd. */
1638 if (nlm_alpha_backend_data (outbfd)->gp == 0)
1639 nlm_alpha_backend_data (outbfd)->gp =
1640 bfd_ecoff_get_gp_value (insec->owner);
1642 *relocs = (arelent *) xmalloc (sizeof (arelent));
1643 (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1644 (*relocs)->address = nlm_alpha_backend_data (outbfd)->gp;
1645 (*relocs)->addend = 0;
1646 (*relocs)->howto = &nlm32_alpha_nw_howto;
1648 ++(*reloc_count_ptr);
1650 memcpy ((PTR) relocs, (PTR) old_relocs,
1651 (size_t) old_reloc_count * sizeof (arelent *));
1652 relocs[old_reloc_count] = (arelent *) NULL;
1656 if (insec->output_offset != 0)
1658 register bfd_size_type i;
1660 for (i = 0; i < (bfd_size_type) old_reloc_count; i++, relocs++)
1661 (*relocs)->address += insec->output_offset;
1665 #endif /* NLMCONV_ALPHA */
1667 #ifdef NLMCONV_POWERPC
1669 /* We keep a linked list of stubs which we must build. Because BFD
1670 requires us to know the sizes of all sections before we can set the
1671 contents of any, we must figure out which stubs we want to build
1672 before we can actually build any of them. */
1676 /* Next stub in linked list. */
1677 struct powerpc_stub *next;
1679 /* Symbol whose value is the start of the stub. This is a symbol
1680 whose name begins with `.'. */
1683 /* Symbol we are going to create a reloc against. This is a symbol
1684 with the same name as START but without the leading `.'. */
1687 /* The TOC index for this stub. This is the index into the TOC
1688 section at which the reloc is created. */
1689 unsigned int toc_index;
1692 /* The linked list of stubs. */
1694 static struct powerpc_stub *powerpc_stubs;
1696 /* This is what a stub looks like. The first instruction will get
1697 adjusted with the correct TOC index. */
1699 static unsigned long powerpc_stub_insns[] =
1701 0x81820000, /* lwz r12,0(r2) */
1702 0x90410014, /* stw r2,20(r1) */
1703 0x800c0000, /* lwz r0,0(r12) */
1704 0x804c0004, /* lwz r2,r(r12) */
1705 0x7c0903a6, /* mtctr r0 */
1706 0x4e800420, /* bctr */
1707 0, /* Traceback table. */
1712 #define POWERPC_STUB_INSN_COUNT \
1713 (sizeof powerpc_stub_insns / sizeof powerpc_stub_insns[0])
1715 #define POWERPC_STUB_SIZE (4 * POWERPC_STUB_INSN_COUNT)
1717 /* Each stub uses a four byte TOC entry. */
1718 #define POWERPC_STUB_TOC_ENTRY_SIZE (4)
1720 /* The original size of the .got section. */
1721 static bfd_size_type powerpc_initial_got_size;
1723 /* Look for all undefined symbols beginning with `.', and prepare to
1724 build a stub for each one. */
1727 powerpc_build_stubs (inbfd, outbfd, symbols_ptr, symcount_ptr)
1729 bfd *outbfd ATTRIBUTE_UNUSED;
1730 asymbol ***symbols_ptr;
1735 unsigned int got_base;
1740 /* Make a section to hold stubs. We don't set SEC_HAS_CONTENTS for
1741 the section to prevent copy_sections from reading from it. */
1742 stub_sec = bfd_make_section (inbfd, ".stubs");
1743 if (stub_sec == (asection *) NULL
1744 || ! bfd_set_section_flags (inbfd, stub_sec,
1749 || ! bfd_set_section_alignment (inbfd, stub_sec, 2))
1750 bfd_fatal (".stubs");
1752 /* Get the TOC section, which is named .got. */
1753 got_sec = bfd_get_section_by_name (inbfd, ".got");
1754 if (got_sec == (asection *) NULL)
1756 got_sec = bfd_make_section (inbfd, ".got");
1757 if (got_sec == (asection *) NULL
1758 || ! bfd_set_section_flags (inbfd, got_sec,
1763 | SEC_HAS_CONTENTS))
1764 || ! bfd_set_section_alignment (inbfd, got_sec, 2))
1768 powerpc_initial_got_size = bfd_section_size (inbfd, got_sec);
1769 got_base = powerpc_initial_got_size;
1770 got_base = (got_base + 3) &~ 3;
1774 symcount = *symcount_ptr;
1775 for (i = 0; i < symcount; i++)
1780 struct powerpc_stub *item;
1782 sym = (*symbols_ptr)[i];
1784 /* We must make a stub for every undefined symbol whose name
1786 if (bfd_asymbol_name (sym)[0] != '.'
1787 || ! bfd_is_und_section (bfd_get_section (sym)))
1790 /* Make a new undefined symbol with the same name but without
1792 newsym = (asymbol *) xmalloc (sizeof (asymbol));
1794 newname = (char *) xmalloc (strlen (bfd_asymbol_name (sym)));
1795 strcpy (newname, bfd_asymbol_name (sym) + 1);
1796 newsym->name = newname;
1798 /* Define the `.' symbol to be in the stub section. */
1799 sym->section = stub_sec;
1800 sym->value = stubcount * POWERPC_STUB_SIZE;
1801 /* We set the BSF_DYNAMIC flag here so that we can check it when
1802 we are mangling relocs. FIXME: This is a hack. */
1803 sym->flags = BSF_LOCAL | BSF_DYNAMIC;
1805 /* Add this stub to the linked list. */
1806 item = (struct powerpc_stub *) xmalloc (sizeof (struct powerpc_stub));
1808 item->reloc = newsym;
1809 item->toc_index = got_base + stubcount * POWERPC_STUB_TOC_ENTRY_SIZE;
1811 item->next = powerpc_stubs;
1812 powerpc_stubs = item;
1820 struct powerpc_stub *l;
1822 /* Add the new symbols we just created to the symbol table. */
1823 *symbols_ptr = (asymbol **) xrealloc ((char *) *symbols_ptr,
1824 ((symcount + stubcount)
1825 * sizeof (asymbol)));
1826 *symcount_ptr += stubcount;
1827 s = &(*symbols_ptr)[symcount];
1828 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1831 /* Set the size of the .stubs section and increase the size of
1832 the .got section. */
1833 if (! bfd_set_section_size (inbfd, stub_sec,
1834 stubcount * POWERPC_STUB_SIZE)
1835 || ! bfd_set_section_size (inbfd, got_sec,
1838 * POWERPC_STUB_TOC_ENTRY_SIZE))))
1839 bfd_fatal (_("stub section sizes"));
1843 /* Resolve all the stubs for PowerPC NetWare. We fill in the contents
1844 of the output section, and create new relocs in the TOC. */
1847 powerpc_resolve_stubs (inbfd, outbfd)
1851 bfd_byte buf[POWERPC_STUB_SIZE];
1853 unsigned int stubcount;
1857 struct powerpc_stub *l;
1859 if (powerpc_stubs == (struct powerpc_stub *) NULL)
1862 for (i = 0; i < POWERPC_STUB_INSN_COUNT; i++)
1863 bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[i], buf + i * 4);
1865 got_sec = bfd_get_section_by_name (inbfd, ".got");
1866 assert (got_sec != (asection *) NULL);
1867 assert (got_sec->output_section->orelocation == (arelent **) NULL);
1870 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1872 relocs = (arelent **) xmalloc (stubcount * sizeof (arelent *));
1875 for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
1879 /* Adjust the first instruction to use the right TOC index. */
1880 bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[0] + l->toc_index, buf);
1882 /* Write this stub out. */
1883 if (! bfd_set_section_contents (outbfd,
1884 bfd_get_section (l->start),
1888 bfd_fatal (_("writing stub"));
1890 /* Create a new reloc for the TOC entry. */
1891 reloc = (arelent *) xmalloc (sizeof (arelent));
1892 reloc->sym_ptr_ptr = &l->reloc;
1893 reloc->address = l->toc_index + got_sec->output_offset;
1895 reloc->howto = bfd_reloc_type_lookup (inbfd, BFD_RELOC_32);
1900 bfd_set_reloc (outbfd, got_sec->output_section, relocs, stubcount);
1903 /* Adjust relocation entries for PowerPC NetWare. We do not output
1904 TOC relocations. The object code already contains the offset from
1905 the TOC pointer. When the function is called, the TOC register,
1906 r2, will be set to the correct TOC value, so there is no need for
1907 any further reloc. */
1911 powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
1915 register arelent ***relocs_ptr;
1916 long *reloc_count_ptr;
1918 bfd_size_type contents_size ATTRIBUTE_UNUSED;
1920 reloc_howto_type *toc_howto;
1922 register arelent **relocs;
1925 toc_howto = bfd_reloc_type_lookup (insec->owner, BFD_RELOC_PPC_TOC16);
1926 if (toc_howto == (reloc_howto_type *) NULL)
1929 /* If this is the .got section, clear out all the contents beyond
1930 the initial size. We must do this here because copy_sections is
1931 going to write out whatever we return in the contents field. */
1932 if (strcmp (bfd_get_section_name (insec->owner, insec), ".got") == 0)
1933 memset (contents + powerpc_initial_got_size, 0,
1934 (size_t) (bfd_get_section_size_after_reloc (insec)
1935 - powerpc_initial_got_size));
1937 reloc_count = *reloc_count_ptr;
1938 relocs = *relocs_ptr;
1939 for (i = 0; i < reloc_count; i++)
1946 sym = *rel->sym_ptr_ptr;
1948 /* Convert any relocs against the .bss section into relocs
1949 against the .data section. */
1950 if (strcmp (bfd_get_section_name (outbfd, bfd_get_section (sym)),
1951 NLM_UNINITIALIZED_DATA_NAME) == 0)
1955 datasec = bfd_get_section_by_name (outbfd,
1956 NLM_INITIALIZED_DATA_NAME);
1957 if (datasec != NULL)
1959 rel->addend += (bfd_get_section_vma (outbfd,
1960 bfd_get_section (sym))
1962 rel->sym_ptr_ptr = datasec->symbol_ptr_ptr;
1963 sym = *rel->sym_ptr_ptr;
1967 /* We must be able to resolve all PC relative relocs at this
1968 point. If we get a branch to an undefined symbol we build a
1969 stub, since NetWare will resolve undefined symbols into a
1970 pointer to a function descriptor. */
1971 if (rel->howto->pc_relative)
1973 /* This check for whether a symbol is in the same section as
1974 the reloc will be wrong if there is a PC relative reloc
1975 between two sections both of which were placed in the
1976 same output section. This should not happen. */
1977 if (bfd_get_section (sym) != insec->output_section)
1978 non_fatal (_("unresolved PC relative reloc against %s"),
1979 bfd_asymbol_name (sym));
1984 assert (rel->howto->size == 2 && rel->howto->pcrel_offset);
1985 val = bfd_get_32 (outbfd, (bfd_byte *) contents + rel->address);
1986 val = ((val &~ rel->howto->dst_mask)
1987 | (((val & rel->howto->src_mask)
1988 + (sym->value - rel->address)
1990 & rel->howto->dst_mask));
1991 bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
1993 /* If this reloc is against an stubbed symbol and the
1996 then we replace the next instruction with
1998 This reloads the TOC pointer after a stub call. */
1999 if (bfd_asymbol_name (sym)[0] == '.'
2000 && (sym->flags & BSF_DYNAMIC) != 0
2001 && (bfd_get_32 (outbfd,
2002 (bfd_byte *) contents + rel->address + 4)
2003 == 0x4ffffb82)) /* cror 31,31,31 */
2004 bfd_put_32 (outbfd, (bfd_vma) 0x80410014, /* lwz r2,20(r1) */
2005 (bfd_byte *) contents + rel->address + 4);
2009 memmove (relocs, relocs + 1,
2010 (size_t) ((reloc_count - 1) * sizeof (arelent *)));
2015 /* When considering a TOC reloc, we do not want to include the
2016 symbol value. The symbol will be start of the TOC section
2017 (which is named .got). We do want to include the addend. */
2018 if (rel->howto == toc_howto)
2021 sym_value = sym->value;
2023 /* If this is a relocation against a symbol with a value, or
2024 there is a reloc addend, we need to update the addend in the
2026 if (sym_value + rel->addend != 0)
2030 switch (rel->howto->size)
2033 val = bfd_get_16 (outbfd,
2034 (bfd_byte *) contents + rel->address);
2035 val = ((val &~ rel->howto->dst_mask)
2036 | (((val & rel->howto->src_mask)
2039 & rel->howto->dst_mask));
2040 if ((bfd_signed_vma) val < - 0x8000
2041 || (bfd_signed_vma) val >= 0x8000)
2042 non_fatal (_("overflow when adjusting relocation against %s"),
2043 bfd_asymbol_name (sym));
2044 bfd_put_16 (outbfd, val, (bfd_byte *) contents + rel->address);
2048 val = bfd_get_32 (outbfd,
2049 (bfd_byte *) contents + rel->address);
2050 val = ((val &~ rel->howto->dst_mask)
2051 | (((val & rel->howto->src_mask)
2054 & rel->howto->dst_mask));
2055 bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
2062 if (! bfd_is_und_section (bfd_get_section (sym)))
2063 rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
2067 /* Now that we have incorporated the addend, remove any TOC
2069 if (rel->howto == toc_howto)
2073 memmove (relocs, relocs + 1,
2074 (size_t) ((reloc_count - i) * sizeof (arelent *)));
2078 rel->address += insec->output_offset;
2082 #endif /* NLMCONV_POWERPC */
2084 /* Name of linker. */
2086 #define LD_NAME "ld"
2089 /* The user has specified several input files. Invoke the linker to
2090 link them all together, and convert and delete the resulting output
2094 link_inputs (inputs, ld)
2095 struct string_list *inputs;
2099 struct string_list *q;
2108 for (q = inputs; q != NULL; q = q->next)
2111 argv = (char **) alloca ((c + 5) * sizeof(char *));
2118 /* Find the linker to invoke based on how nlmconv was run. */
2119 p = program_name + strlen (program_name);
2120 while (p != program_name)
2124 ld = (char *) xmalloc (p - program_name + strlen (LD_NAME) + 1);
2125 memcpy (ld, program_name, p - program_name);
2126 strcpy (ld + (p - program_name), LD_NAME);
2135 ld = (char *) LD_NAME;
2137 unlink_on_exit = make_temp_file (".O");
2140 argv[1] = (char *) "-Ur";
2141 argv[2] = (char *) "-o";
2142 argv[3] = unlink_on_exit;
2144 for (q = inputs; q != NULL; q = q->next, i++)
2145 argv[i] = q->string;
2150 for (i = 0; argv[i] != NULL; i++)
2151 fprintf (stderr, " %s", argv[i]);
2152 fprintf (stderr, "\n");
2155 pid = pexecute (ld, argv, program_name, (char *) NULL, &errfmt, &errarg,
2156 PEXECUTE_SEARCH | PEXECUTE_ONE);
2159 fprintf (stderr, _("%s: execution of %s failed: "), program_name, ld);
2160 fprintf (stderr, errfmt, errarg);
2161 unlink (unlink_on_exit);
2165 if (pwait (pid, &status, 0) < 0)
2168 unlink (unlink_on_exit);
2174 non_fatal (_("Execution of %s failed"), ld);
2175 unlink (unlink_on_exit);
2179 return unlink_on_exit;