1 /* dllwrap.c -- wrapper for DLLTOOL and GCC to generate PE style DLLs
2 Copyright (C) 1998-2022 Free Software Foundation, Inc.
3 Contributed by Mumit Khan (khan@xraylith.wisc.edu).
4
5 This file is part of GNU Binutils.
6
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 3 of the License, or
10 (at your option) any later version.
11
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.
16
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
20 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "libiberty.h"
25 #include "getopt.h"
26 #include "dyn-string.h"
27 #include "bucomm.h"
28
29 #include <time.h>
30
31 #ifdef HAVE_SYS_WAIT_H
32 #include <sys/wait.h>
33 #else /* ! HAVE_SYS_WAIT_H */
34 #if ! defined (_WIN32) || defined (__CYGWIN32__)
35 #ifndef WIFEXITED
36 #define WIFEXITED(w) (((w)&0377) == 0)
37 #endif
38 #ifndef WIFSIGNALED
39 #define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0)
40 #endif
41 #ifndef WTERMSIG
42 #define WTERMSIG(w) ((w) & 0177)
43 #endif
44 #ifndef WEXITSTATUS
45 #define WEXITSTATUS(w) (((w) >> 8) & 0377)
46 #endif
47 #else /* defined (_WIN32) && ! defined (__CYGWIN32__) */
48 #ifndef WIFEXITED
49 #define WIFEXITED(w) (((w) & 0xff) == 0)
50 #endif
51 #ifndef WIFSIGNALED
52 #define WIFSIGNALED(w) (((w) & 0xff) != 0 && ((w) & 0xff) != 0x7f)
53 #endif
54 #ifndef WTERMSIG
55 #define WTERMSIG(w) ((w) & 0x7f)
56 #endif
57 #ifndef WEXITSTATUS
58 #define WEXITSTATUS(w) (((w) & 0xff00) >> 8)
59 #endif
60 #endif /* defined (_WIN32) && ! defined (__CYGWIN32__) */
61 #endif /* ! HAVE_SYS_WAIT_H */
62
63 static char *driver_name = NULL;
64 static char *cygwin_driver_flags =
65 "-Wl,--dll -nostartfiles";
66 static char *mingw32_driver_flags = "-mdll";
67 static char *generic_driver_flags = "-Wl,--dll";
68
69 static char *entry_point;
70
71 static char *dlltool_name = NULL;
72
73 static char *target = TARGET;
74
75 /* -1: use default, 0: no underscoring, 1: underscore. */
76 static int is_leading_underscore = -1;
77
78 typedef enum {
79 UNKNOWN_TARGET,
80 CYGWIN_TARGET,
81 MINGW_TARGET
82 }
83 target_type;
84
85 typedef enum {
86 UNKNOWN_CPU,
87 X86_CPU,
88 X64_CPU,
89 ARM_CPU
90 }
91 target_cpu;
92
93 static target_type which_target = UNKNOWN_TARGET;
94 static target_cpu which_cpu = UNKNOWN_CPU;
95
96 static int dontdeltemps = 0;
97 static int dry_run = 0;
98
99 static char *prog_name;
100
101 static int verbose = 0;
102
103 static char *dll_file_name;
104 static char *dll_name;
105 static char *base_file_name;
106 static char *exp_file_name;
107 static char *def_file_name;
108 static int delete_base_file = 1;
109 static int delete_exp_file = 1;
110 static int delete_def_file = 1;
111
112 static int run (const char *, char *);
113 static char *mybasename (const char *);
114 static int strhash (const char *);
115 static void usage (FILE *, int);
116 static void display (const char *, va_list) ATTRIBUTE_PRINTF(1,0);
117 static void inform (const char *, ...) ATTRIBUTE_PRINTF_1;
118 static void warn (const char *, ...) ATTRIBUTE_PRINTF_1;
119 static char *look_for_prog (const char *, const char *, int);
120 static char *deduce_name (const char *);
121 static void delete_temp_files (void);
122 static void cleanup_and_exit (int);
123
124 /**********************************************************************/
125
126 /* Please keep the following 4 routines in sync with dlltool.c:
127 display ()
128 inform ()
129 look_for_prog ()
130 deduce_name ()
131 It's not worth the hassle to break these out since dllwrap will
132 (hopefully) soon be retired in favor of `ld --shared. */
133
134 static void
display(const char * message,va_list args)135 display (const char * message, va_list args)
136 {
137 if (prog_name != NULL)
138 fprintf (stderr, "%s: ", prog_name);
139
140 vfprintf (stderr, message, args);
141 fputc ('\n', stderr);
142 }
143
144
145 static void
inform(const char * message,...)146 inform (const char *message, ...)
147 {
148 va_list args;
149
150 va_start (args, message);
151
152 if (!verbose)
153 return;
154
155 display (message, args);
156
157 va_end (args);
158 }
159
160 static void
warn(const char * format,...)161 warn (const char *format, ...)
162 {
163 va_list args;
164
165 va_start (args, format);
166
167 display (format, args);
168
169 va_end (args);
170 }
171
172 /* Look for the program formed by concatenating PROG_NAME and the
173 string running from PREFIX to END_PREFIX. If the concatenated
174 string contains a '/', try appending EXECUTABLE_SUFFIX if it is
175 appropriate. */
176
177 static char *
look_for_prog(const char * progname,const char * prefix,int end_prefix)178 look_for_prog (const char *progname, const char *prefix, int end_prefix)
179 {
180 struct stat s;
181 char *cmd;
182
183 cmd = xmalloc (strlen (prefix)
184 + strlen (progname)
185 #ifdef HAVE_EXECUTABLE_SUFFIX
186 + strlen (EXECUTABLE_SUFFIX)
187 #endif
188 + 10);
189 strcpy (cmd, prefix);
190
191 sprintf (cmd + end_prefix, "%s", progname);
192
193 if (strchr (cmd, '/') != NULL)
194 {
195 int found;
196
197 found = (stat (cmd, &s) == 0
198 #ifdef HAVE_EXECUTABLE_SUFFIX
199 || stat (strcat (cmd, EXECUTABLE_SUFFIX), &s) == 0
200 #endif
201 );
202
203 if (! found)
204 {
205 /* xgettext:c-format */
206 inform (_("Tried file: %s"), cmd);
207 free (cmd);
208 return NULL;
209 }
210 }
211
212 /* xgettext:c-format */
213 inform (_("Using file: %s"), cmd);
214
215 return cmd;
216 }
217
218 /* Deduce the name of the program we are want to invoke.
219 PROG_NAME is the basic name of the program we want to run,
220 eg "as" or "ld". The catch is that we might want actually
221 run "i386-pe-as" or "ppc-pe-ld".
222
223 If argv[0] contains the full path, then try to find the program
224 in the same place, with and then without a target-like prefix.
225
226 Given, argv[0] = /usr/local/bin/i586-cygwin32-dlltool,
227 deduce_name("as") uses the following search order:
228
229 /usr/local/bin/i586-cygwin32-as
230 /usr/local/bin/as
231 as
232
233 If there's an EXECUTABLE_SUFFIX, it'll use that as well; for each
234 name, it'll try without and then with EXECUTABLE_SUFFIX.
235
236 Given, argv[0] = i586-cygwin32-dlltool, it will not even try "as"
237 as the fallback, but rather return i586-cygwin32-as.
238
239 Oh, and given, argv[0] = dlltool, it'll return "as".
240
241 Returns a dynamically allocated string. */
242
243 static char *
deduce_name(const char * name)244 deduce_name (const char * name)
245 {
246 char *cmd;
247 const char *dash;
248 const char *slash;
249 const char *cp;
250
251 dash = NULL;
252 slash = NULL;
253 for (cp = prog_name; *cp != '\0'; ++cp)
254 {
255 if (*cp == '-')
256 dash = cp;
257
258 if (
259 #if defined(__DJGPP__) || defined (__CYGWIN__) || defined(__WIN32__)
260 *cp == ':' || *cp == '\\' ||
261 #endif
262 *cp == '/')
263 {
264 slash = cp;
265 dash = NULL;
266 }
267 }
268
269 cmd = NULL;
270
271 if (dash != NULL)
272 /* First, try looking for a prefixed NAME in the
273 PROG_NAME directory, with the same prefix as PROG_NAME. */
274 cmd = look_for_prog (name, prog_name, dash - prog_name + 1);
275
276 if (slash != NULL && cmd == NULL)
277 /* Next, try looking for a NAME in the same directory as
278 that of this program. */
279 cmd = look_for_prog (name, prog_name, slash - prog_name + 1);
280
281 if (cmd == NULL)
282 /* Just return NAME as is. */
283 cmd = xstrdup (name);
284
285 return cmd;
286 }
287
288 static void
delete_temp_files(void)289 delete_temp_files (void)
290 {
291 if (delete_base_file && base_file_name)
292 {
293 if (verbose)
294 {
295 if (dontdeltemps)
296 warn (_("Keeping temporary base file %s"), base_file_name);
297 else
298 warn (_("Deleting temporary base file %s"), base_file_name);
299 }
300 if (! dontdeltemps)
301 {
302 unlink (base_file_name);
303 free (base_file_name);
304 }
305 }
306
307 if (delete_exp_file && exp_file_name)
308 {
309 if (verbose)
310 {
311 if (dontdeltemps)
312 warn (_("Keeping temporary exp file %s"), exp_file_name);
313 else
314 warn (_("Deleting temporary exp file %s"), exp_file_name);
315 }
316 if (! dontdeltemps)
317 {
318 unlink (exp_file_name);
319 free (exp_file_name);
320 }
321 }
322 if (delete_def_file && def_file_name)
323 {
324 if (verbose)
325 {
326 if (dontdeltemps)
327 warn (_("Keeping temporary def file %s"), def_file_name);
328 else
329 warn (_("Deleting temporary def file %s"), def_file_name);
330 }
331 if (! dontdeltemps)
332 {
333 unlink (def_file_name);
334 free (def_file_name);
335 }
336 }
337 }
338
339 static void
cleanup_and_exit(int status)340 cleanup_and_exit (int status)
341 {
342 delete_temp_files ();
343 exit (status);
344 }
345
346 static int
run(const char * what,char * args)347 run (const char *what, char *args)
348 {
349 char *s;
350 int pid, wait_status, retcode;
351 int i;
352 const char **argv;
353 char *errmsg_fmt = NULL, *errmsg_arg = NULL;
354 char *temp_base = choose_temp_base ();
355 int in_quote;
356 char sep;
357
358 if (verbose || dry_run)
359 fprintf (stderr, "%s %s\n", what, args);
360
361 /* Count the args */
362 i = 0;
363 for (s = args; *s; s++)
364 if (*s == ' ')
365 i++;
366 i++;
367 argv = xmalloc (sizeof (char *) * (i + 3));
368 i = 0;
369 argv[i++] = what;
370 s = args;
371 while (1)
372 {
373 while (*s == ' ' && *s != 0)
374 s++;
375 if (*s == 0)
376 break;
377 in_quote = (*s == '\'' || *s == '"');
378 sep = (in_quote) ? *s++ : ' ';
379 argv[i++] = s;
380 while (*s != sep && *s != 0)
381 s++;
382 if (*s == 0)
383 break;
384 *s++ = 0;
385 if (in_quote)
386 s++;
387 }
388 argv[i++] = NULL;
389
390 if (dry_run)
391 return 0;
392
393 pid = pexecute (argv[0], (char * const *) argv, prog_name, temp_base,
394 &errmsg_fmt, &errmsg_arg, PEXECUTE_ONE | PEXECUTE_SEARCH);
395 free (argv);
396
397 if (pid == -1)
398 {
399 int errno_val = errno;
400
401 fprintf (stderr, "%s: ", prog_name);
402 fprintf (stderr, errmsg_fmt, errmsg_arg);
403 fprintf (stderr, ": %s\n", strerror (errno_val));
404 return 1;
405 }
406
407 retcode = 0;
408 pid = pwait (pid, &wait_status, 0);
409 if (pid == -1)
410 {
411 warn (_("pwait returns: %s"), strerror (errno));
412 retcode = 1;
413 }
414 else if (WIFSIGNALED (wait_status))
415 {
416 warn (_("subprocess got fatal signal %d"), WTERMSIG (wait_status));
417 retcode = 1;
418 }
419 else if (WIFEXITED (wait_status))
420 {
421 if (WEXITSTATUS (wait_status) != 0)
422 {
423 warn (_("%s exited with status %d"), what, WEXITSTATUS (wait_status));
424 retcode = 1;
425 }
426 }
427 else
428 retcode = 1;
429
430 return retcode;
431 }
432
433 static char *
mybasename(const char * name)434 mybasename (const char *name)
435 {
436 const char *base = name;
437
438 while (*name)
439 {
440 if (*name == '/' || *name == '\\')
441 {
442 base = name + 1;
443 }
444 ++name;
445 }
446 return (char *) base;
447 }
448
449 static int
strhash(const char * str)450 strhash (const char *str)
451 {
452 const unsigned char *s;
453 unsigned long hash;
454 unsigned int c;
455 unsigned int len;
456
457 hash = 0;
458 len = 0;
459 s = (const unsigned char *) str;
460 while ((c = *s++) != '\0')
461 {
462 hash += c + (c << 17);
463 hash ^= hash >> 2;
464 ++len;
465 }
466 hash += len + (len << 17);
467 hash ^= hash >> 2;
468
469 return hash;
470 }
471
472 /**********************************************************************/
473
474 static void
usage(FILE * file,int status)475 usage (FILE *file, int status)
476 {
477 fprintf (file, _("Usage %s <option(s)> <object-file(s)>\n"), prog_name);
478 fprintf (file, _(" Generic options:\n"));
479 fprintf (file, _(" @<file> Read options from <file>\n"));
480 fprintf (file, _(" --quiet, -q Work quietly\n"));
481 fprintf (file, _(" --verbose, -v Verbose\n"));
482 fprintf (file, _(" --version Print dllwrap version\n"));
483 fprintf (file, _(" --implib <outname> Synonym for --output-lib\n"));
484 fprintf (file, _(" Options for %s:\n"), prog_name);
485 fprintf (file, _(" --driver-name <driver> Defaults to \"gcc\"\n"));
486 fprintf (file, _(" --driver-flags <flags> Override default ld flags\n"));
487 fprintf (file, _(" --dlltool-name <dlltool> Defaults to \"dlltool\"\n"));
488 fprintf (file, _(" --entry <entry> Specify alternate DLL entry point\n"));
489 fprintf (file, _(" --image-base <base> Specify image base address\n"));
490 fprintf (file, _(" --target <machine> i386-cygwin32 or i386-mingw32\n"));
491 fprintf (file, _(" --dry-run Show what needs to be run\n"));
492 fprintf (file, _(" --mno-cygwin Create Mingw DLL\n"));
493 fprintf (file, _(" Options passed to DLLTOOL:\n"));
494 fprintf (file, _(" --machine <machine>\n"));
495 fprintf (file, _(" --output-exp <outname> Generate export file.\n"));
496 fprintf (file, _(" --output-lib <outname> Generate input library.\n"));
497 fprintf (file, _(" --add-indirect Add dll indirects to export file.\n"));
498 fprintf (file, _(" --dllname <name> Name of input dll to put into output lib.\n"));
499 fprintf (file, _(" --def <deffile> Name input .def file\n"));
500 fprintf (file, _(" --output-def <deffile> Name output .def file\n"));
501 fprintf (file, _(" --export-all-symbols Export all symbols to .def\n"));
502 fprintf (file, _(" --no-export-all-symbols Only export .drectve symbols\n"));
503 fprintf (file, _(" --exclude-symbols <list> Exclude <list> from .def\n"));
504 fprintf (file, _(" --no-default-excludes Zap default exclude symbols\n"));
505 fprintf (file, _(" --base-file <basefile> Read linker generated base file\n"));
506 fprintf (file, _(" --no-idata4 Don't generate idata$4 section\n"));
507 fprintf (file, _(" --no-idata5 Don't generate idata$5 section\n"));
508 fprintf (file, _(" -U Add underscores to .lib\n"));
509 fprintf (file, _(" -k Kill @<n> from exported names\n"));
510 fprintf (file, _(" --add-stdcall-alias Add aliases without @<n>\n"));
511 fprintf (file, _(" --as <name> Use <name> for assembler\n"));
512 fprintf (file, _(" --nodelete Keep temp files.\n"));
513 fprintf (file, _(" --no-leading-underscore Entrypoint without underscore\n"));
514 fprintf (file, _(" --leading-underscore Entrypoint with underscore.\n"));
515 fprintf (file, _(" Rest are passed unmodified to the language driver\n"));
516 fprintf (file, "\n\n");
517 if (REPORT_BUGS_TO[0] && status == 0)
518 fprintf (file, _("Report bugs to %s\n"), REPORT_BUGS_TO);
519 exit (status);
520 }
521
522 #define OPTION_START 149
523
524 /* GENERIC options. */
525 #define OPTION_QUIET (OPTION_START + 1)
526 #define OPTION_VERBOSE (OPTION_QUIET + 1)
527 #define OPTION_VERSION (OPTION_VERBOSE + 1)
528
529 /* DLLWRAP options. */
530 #define OPTION_DRY_RUN (OPTION_VERSION + 1)
531 #define OPTION_DRIVER_NAME (OPTION_DRY_RUN + 1)
532 #define OPTION_DRIVER_FLAGS (OPTION_DRIVER_NAME + 1)
533 #define OPTION_DLLTOOL_NAME (OPTION_DRIVER_FLAGS + 1)
534 #define OPTION_ENTRY (OPTION_DLLTOOL_NAME + 1)
535 #define OPTION_IMAGE_BASE (OPTION_ENTRY + 1)
536 #define OPTION_TARGET (OPTION_IMAGE_BASE + 1)
537 #define OPTION_MNO_CYGWIN (OPTION_TARGET + 1)
538 #define OPTION_NO_LEADING_UNDERSCORE (OPTION_MNO_CYGWIN + 1)
539 #define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1)
540
541 /* DLLTOOL options. */
542 #define OPTION_NODELETE (OPTION_LEADING_UNDERSCORE + 1)
543 #define OPTION_DLLNAME (OPTION_NODELETE + 1)
544 #define OPTION_NO_IDATA4 (OPTION_DLLNAME + 1)
545 #define OPTION_NO_IDATA5 (OPTION_NO_IDATA4 + 1)
546 #define OPTION_OUTPUT_EXP (OPTION_NO_IDATA5 + 1)
547 #define OPTION_OUTPUT_DEF (OPTION_OUTPUT_EXP + 1)
548 #define OPTION_EXPORT_ALL_SYMS (OPTION_OUTPUT_DEF + 1)
549 #define OPTION_NO_EXPORT_ALL_SYMS (OPTION_EXPORT_ALL_SYMS + 1)
550 #define OPTION_EXCLUDE_SYMS (OPTION_NO_EXPORT_ALL_SYMS + 1)
551 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_EXCLUDE_SYMS + 1)
552 #define OPTION_OUTPUT_LIB (OPTION_NO_DEFAULT_EXCLUDES + 1)
553 #define OPTION_DEF (OPTION_OUTPUT_LIB + 1)
554 #define OPTION_ADD_UNDERSCORE (OPTION_DEF + 1)
555 #define OPTION_KILLAT (OPTION_ADD_UNDERSCORE + 1)
556 #define OPTION_HELP (OPTION_KILLAT + 1)
557 #define OPTION_MACHINE (OPTION_HELP + 1)
558 #define OPTION_ADD_INDIRECT (OPTION_MACHINE + 1)
559 #define OPTION_BASE_FILE (OPTION_ADD_INDIRECT + 1)
560 #define OPTION_AS (OPTION_BASE_FILE + 1)
561
562 static const struct option long_options[] =
563 {
564 /* generic options. */
565 {"quiet", no_argument, NULL, 'q'},
566 {"verbose", no_argument, NULL, 'v'},
567 {"version", no_argument, NULL, OPTION_VERSION},
568 {"implib", required_argument, NULL, OPTION_OUTPUT_LIB},
569
570 /* dllwrap options. */
571 {"dry-run", no_argument, NULL, OPTION_DRY_RUN},
572 {"driver-name", required_argument, NULL, OPTION_DRIVER_NAME},
573 {"driver-flags", required_argument, NULL, OPTION_DRIVER_FLAGS},
574 {"dlltool-name", required_argument, NULL, OPTION_DLLTOOL_NAME},
575 {"entry", required_argument, NULL, 'e'},
576 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
577 {"target", required_argument, NULL, OPTION_TARGET},
578 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
579 {"leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
580
581 /* dlltool options. */
582 {"no-delete", no_argument, NULL, 'n'},
583 {"dllname", required_argument, NULL, OPTION_DLLNAME},
584 {"no-idata4", no_argument, NULL, OPTION_NO_IDATA4},
585 {"no-idata5", no_argument, NULL, OPTION_NO_IDATA5},
586 {"output-exp", required_argument, NULL, OPTION_OUTPUT_EXP},
587 {"output-def", required_argument, NULL, OPTION_OUTPUT_DEF},
588 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL_SYMS},
589 {"no-export-all-symbols", no_argument, NULL, OPTION_NO_EXPORT_ALL_SYMS},
590 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMS},
591 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
592 {"output-lib", required_argument, NULL, OPTION_OUTPUT_LIB},
593 {"def", required_argument, NULL, OPTION_DEF},
594 {"add-underscore", no_argument, NULL, 'U'},
595 {"killat", no_argument, NULL, 'k'},
596 {"add-stdcall-alias", no_argument, NULL, 'A'},
597 {"help", no_argument, NULL, 'h'},
598 {"machine", required_argument, NULL, OPTION_MACHINE},
599 {"add-indirect", no_argument, NULL, OPTION_ADD_INDIRECT},
600 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
601 {"as", required_argument, NULL, OPTION_AS},
602 {0, 0, 0, 0}
603 };
604
605 int main (int, char **);
606
607 int
main(int argc,char ** argv)608 main (int argc, char **argv)
609 {
610 int c;
611 int i;
612
613 char **saved_argv = 0;
614 int cmdline_len = 0;
615
616 int export_all = 0;
617
618 int *dlltool_arg_indices;
619 int *driver_arg_indices;
620
621 char *driver_flags = 0;
622 char *output_lib_file_name = 0;
623
624 dyn_string_t dlltool_cmdline;
625 dyn_string_t driver_cmdline;
626
627 int def_file_seen = 0;
628
629 char *image_base_str = 0;
630
631 prog_name = argv[0];
632
633 #ifdef HAVE_LC_MESSAGES
634 setlocale (LC_MESSAGES, "");
635 #endif
636 setlocale (LC_CTYPE, "");
637 bindtextdomain (PACKAGE, LOCALEDIR);
638 textdomain (PACKAGE);
639
640 warn (_("WARNING: %s is deprecated, use gcc -shared or ld -shared instead\n"),
641 prog_name);
642
643 expandargv (&argc, &argv);
644
645 saved_argv = (char **) xmalloc (argc * sizeof (char*));
646 dlltool_arg_indices = (int *) xmalloc (argc * sizeof (int));
647 driver_arg_indices = (int *) xmalloc (argc * sizeof (int));
648 for (i = 0; i < argc; ++i)
649 {
650 size_t len = strlen (argv[i]);
651 char *arg = (char *) xmalloc (len + 1);
652 strcpy (arg, argv[i]);
653 cmdline_len += len;
654 saved_argv[i] = arg;
655 dlltool_arg_indices[i] = 0;
656 driver_arg_indices[i] = 1;
657 }
658 cmdline_len++;
659
660 /* We recognize dllwrap and dlltool options, and everything else is
661 passed onto the language driver (eg., to GCC). We collect options
662 to dlltool and driver in dlltool_args and driver_args. */
663
664 opterr = 0;
665 while ((c = getopt_long_only (argc, argv, "nkAqve:Uho:l:L:I:",
666 long_options, (int *) 0)) != EOF)
667 {
668 int dlltool_arg;
669 int driver_arg;
670 int single_word_option_value_pair;
671
672 dlltool_arg = 0;
673 driver_arg = 1;
674 single_word_option_value_pair = 0;
675
676 if (c != '?')
677 {
678 /* We recognize this option, so it has to be either dllwrap or
679 dlltool option. Do not pass to driver unless it's one of the
680 generic options that are passed to all the tools (such as -v)
681 which are dealt with later. */
682 driver_arg = 0;
683 }
684
685 /* deal with generic and dllwrap options first. */
686 switch (c)
687 {
688 case 'h':
689 usage (stdout, 0);
690 break;
691 case 'q':
692 verbose = 0;
693 break;
694 case 'v':
695 verbose = 1;
696 break;
697 case OPTION_VERSION:
698 print_version (prog_name);
699 break;
700 case 'e':
701 entry_point = optarg;
702 break;
703 case OPTION_IMAGE_BASE:
704 image_base_str = optarg;
705 break;
706 case OPTION_DEF:
707 def_file_name = optarg;
708 def_file_seen = 1;
709 delete_def_file = 0;
710 break;
711 case 'n':
712 dontdeltemps = 1;
713 dlltool_arg = 1;
714 break;
715 case 'o':
716 dll_file_name = optarg;
717 break;
718 case 'I':
719 case 'l':
720 case 'L':
721 driver_arg = 1;
722 break;
723 case OPTION_DLLNAME:
724 dll_name = optarg;
725 break;
726 case OPTION_DRY_RUN:
727 dry_run = 1;
728 break;
729 case OPTION_DRIVER_NAME:
730 driver_name = optarg;
731 break;
732 case OPTION_DRIVER_FLAGS:
733 driver_flags = optarg;
734 break;
735 case OPTION_DLLTOOL_NAME:
736 dlltool_name = optarg;
737 break;
738 case OPTION_TARGET:
739 target = optarg;
740 break;
741 case OPTION_MNO_CYGWIN:
742 target = "i386-mingw32";
743 break;
744 case OPTION_NO_LEADING_UNDERSCORE:
745 is_leading_underscore = 0;
746 break;
747 case OPTION_LEADING_UNDERSCORE:
748 is_leading_underscore = 1;
749 break;
750 case OPTION_BASE_FILE:
751 base_file_name = optarg;
752 delete_base_file = 0;
753 break;
754 case OPTION_OUTPUT_EXP:
755 exp_file_name = optarg;
756 delete_exp_file = 0;
757 break;
758 case OPTION_EXPORT_ALL_SYMS:
759 export_all = 1;
760 break;
761 case OPTION_OUTPUT_LIB:
762 output_lib_file_name = optarg;
763 break;
764 case '?':
765 break;
766 default:
767 dlltool_arg = 1;
768 break;
769 }
770
771 /* Handle passing through --option=value case. */
772 if (optarg
773 && saved_argv[optind-1][0] == '-'
774 && saved_argv[optind-1][1] == '-'
775 && strchr (saved_argv[optind-1], '='))
776 single_word_option_value_pair = 1;
777
778 if (dlltool_arg)
779 {
780 dlltool_arg_indices[optind-1] = 1;
781 if (optarg && ! single_word_option_value_pair)
782 {
783 dlltool_arg_indices[optind-2] = 1;
784 }
785 }
786
787 if (! driver_arg)
788 {
789 driver_arg_indices[optind-1] = 0;
790 if (optarg && ! single_word_option_value_pair)
791 {
792 driver_arg_indices[optind-2] = 0;
793 }
794 }
795 }
796
797 /* Sanity checks. */
798 if (! dll_name && ! dll_file_name)
799 {
800 warn (_("Must provide at least one of -o or --dllname options"));
801 exit (1);
802 }
803 else if (! dll_name)
804 {
805 dll_name = xstrdup (mybasename (dll_file_name));
806 }
807 else if (! dll_file_name)
808 {
809 dll_file_name = xstrdup (dll_name);
810 }
811
812 /* Deduce driver-name and dlltool-name from our own. */
813 if (driver_name == NULL)
814 driver_name = deduce_name ("gcc");
815
816 if (dlltool_name == NULL)
817 dlltool_name = deduce_name ("dlltool");
818
819 if (! def_file_seen)
820 {
821 char *fileprefix = choose_temp_base ();
822
823 def_file_name = (char *) xmalloc (strlen (fileprefix) + 5);
824 sprintf (def_file_name, "%s.def",
825 (dontdeltemps) ? mybasename (fileprefix) : fileprefix);
826 delete_def_file = 1;
827 free (fileprefix);
828 delete_def_file = 1;
829 warn (_("no export definition file provided.\n\
830 Creating one, but that may not be what you want"));
831 }
832
833 /* Set the target platform. */
834 if (strstr (target, "cygwin"))
835 which_target = CYGWIN_TARGET;
836 else if (strstr (target, "mingw"))
837 which_target = MINGW_TARGET;
838 else
839 which_target = UNKNOWN_TARGET;
840
841 if (startswith (target, "arm"))
842 which_cpu = ARM_CPU;
843 else if (startswith (target, "x86_64")
844 || startswith (target, "athlon64")
845 || startswith (target, "amd64"))
846 which_cpu = X64_CPU;
847 else if (target[0] == 'i' && (target[1] >= '3' && target[1] <= '6')
848 && target[2] == '8' && target[3] == '6')
849 which_cpu = X86_CPU;
850 else
851 which_cpu = UNKNOWN_CPU;
852
853 if (is_leading_underscore == -1)
854 is_leading_underscore = (which_cpu != X64_CPU && which_cpu != ARM_CPU);
855
856 /* Re-create the command lines as a string, taking care to quote stuff. */
857 dlltool_cmdline = dyn_string_new (cmdline_len);
858 if (verbose)
859 dyn_string_append_cstr (dlltool_cmdline, " -v");
860
861 dyn_string_append_cstr (dlltool_cmdline, " --dllname ");
862 dyn_string_append_cstr (dlltool_cmdline, dll_name);
863
864 for (i = 1; i < argc; ++i)
865 {
866 if (dlltool_arg_indices[i])
867 {
868 char *arg = saved_argv[i];
869 int quote = (strchr (arg, ' ') || strchr (arg, '\t'));
870 dyn_string_append_cstr (dlltool_cmdline,
871 (quote) ? " \"" : " ");
872 dyn_string_append_cstr (dlltool_cmdline, arg);
873 dyn_string_append_cstr (dlltool_cmdline,
874 (quote) ? "\"" : "");
875 }
876 }
877
878 driver_cmdline = dyn_string_new (cmdline_len);
879 if (! driver_flags || strlen (driver_flags) == 0)
880 {
881 switch (which_target)
882 {
883 case CYGWIN_TARGET:
884 driver_flags = cygwin_driver_flags;
885 break;
886
887 case MINGW_TARGET:
888 driver_flags = mingw32_driver_flags;
889 break;
890
891 default:
892 driver_flags = generic_driver_flags;
893 break;
894 }
895 }
896 dyn_string_append_cstr (driver_cmdline, driver_flags);
897 dyn_string_append_cstr (driver_cmdline, " -o ");
898 dyn_string_append_cstr (driver_cmdline, dll_file_name);
899
900 if (is_leading_underscore == 0)
901 dyn_string_append_cstr (driver_cmdline, " --no-leading-underscore");
902 else if (is_leading_underscore == 1)
903 dyn_string_append_cstr (driver_cmdline, " --leading-underscore");
904
905 if (! entry_point || strlen (entry_point) == 0)
906 {
907 const char *prefix = (is_leading_underscore != 0 ? "_" : "");
908 const char *postfix = "";
909 const char *name_entry;
910
911 if (which_cpu == X86_CPU || which_cpu == UNKNOWN_CPU)
912 postfix = "@12";
913
914 switch (which_target)
915 {
916 case CYGWIN_TARGET:
917 name_entry = "_cygwin_dll_entry";
918 break;
919
920 case MINGW_TARGET:
921 name_entry = "DllMainCRTStartup";
922 break;
923
924 default:
925 name_entry = "DllMain";
926 break;
927 }
928 entry_point =
929 (char *) malloc (strlen (name_entry) + strlen (prefix)
930 + strlen (postfix) + 1);
931 sprintf (entry_point, "%s%s%s", prefix, name_entry, postfix);
932 }
933 dyn_string_append_cstr (driver_cmdline, " -Wl,-e,");
934 dyn_string_append_cstr (driver_cmdline, entry_point);
935 dyn_string_append_cstr (dlltool_cmdline, " --exclude-symbol=");
936 dyn_string_append_cstr (dlltool_cmdline,
937 (entry_point[0] == '_') ? entry_point+1 : entry_point);
938
939 if (! image_base_str || strlen (image_base_str) == 0)
940 {
941 char *tmpbuf = (char *) xmalloc (sizeof ("0x12345678") + 1);
942 unsigned long hash = strhash (dll_file_name);
943 sprintf (tmpbuf, "0x%.8lX", 0x60000000|((hash<<16)&0xFFC0000));
944 image_base_str = tmpbuf;
945 }
946
947 dyn_string_append_cstr (driver_cmdline, " -Wl,--image-base,");
948 dyn_string_append_cstr (driver_cmdline, image_base_str);
949
950 if (verbose)
951 {
952 dyn_string_append_cstr (driver_cmdline, " -v");
953 }
954
955 for (i = 1; i < argc; ++i)
956 {
957 if (driver_arg_indices[i])
958 {
959 char *arg = saved_argv[i];
960 int quote = (strchr (arg, ' ') || strchr (arg, '\t'));
961 dyn_string_append_cstr (driver_cmdline,
962 (quote) ? " \"" : " ");
963 dyn_string_append_cstr (driver_cmdline, arg);
964 dyn_string_append_cstr (driver_cmdline,
965 (quote) ? "\"" : "");
966 }
967 }
968
969 /* Step pre-1. If no --def <EXPORT_DEF> is specified,
970 then create it and then pass it on. */
971
972 if (! def_file_seen)
973 {
974 dyn_string_t step_pre1;
975
976 step_pre1 = dyn_string_new (1024);
977
978 dyn_string_append_cstr (step_pre1, dlltool_cmdline->s);
979 if (export_all)
980 {
981 dyn_string_append_cstr (step_pre1, " --export-all --exclude-symbol=");
982 dyn_string_append_cstr (step_pre1,
983 "_cygwin_dll_entry@12,DllMainCRTStartup@12,DllMain@12,DllEntryPoint@12");
984 }
985 dyn_string_append_cstr (step_pre1, " --output-def ");
986 dyn_string_append_cstr (step_pre1, def_file_name);
987
988 for (i = 1; i < argc; ++i)
989 {
990 if (driver_arg_indices[i])
991 {
992 char *arg = saved_argv[i];
993 size_t len = strlen (arg);
994 if (len >= 2 && arg[len-2] == '.'
995 && (arg[len-1] == 'o' || arg[len-1] == 'a'))
996 {
997 int quote = (strchr (arg, ' ') || strchr (arg, '\t'));
998 dyn_string_append_cstr (step_pre1,
999 (quote) ? " \"" : " ");
1000 dyn_string_append_cstr (step_pre1, arg);
1001 dyn_string_append_cstr (step_pre1,
1002 (quote) ? "\"" : "");
1003 }
1004 }
1005 }
1006
1007 if (run (dlltool_name, step_pre1->s))
1008 cleanup_and_exit (1);
1009
1010 dyn_string_delete (step_pre1);
1011 }
1012
1013 dyn_string_append_cstr (dlltool_cmdline, " --def ");
1014 dyn_string_append_cstr (dlltool_cmdline, def_file_name);
1015
1016 if (verbose)
1017 {
1018 fprintf (stderr, _("DLLTOOL name : %s\n"), dlltool_name);
1019 fprintf (stderr, _("DLLTOOL options : %s\n"), dlltool_cmdline->s);
1020 fprintf (stderr, _("DRIVER name : %s\n"), driver_name);
1021 fprintf (stderr, _("DRIVER options : %s\n"), driver_cmdline->s);
1022 }
1023
1024 /* Step 1. Call GCC/LD to create base relocation file. If using GCC, the
1025 driver command line will look like the following:
1026
1027 % gcc -Wl,--dll --Wl,--base-file,foo.base [rest of command line]
1028
1029 If the user does not specify a base name, create temporary one that
1030 is deleted at exit. */
1031
1032 if (! base_file_name)
1033 {
1034 char *fileprefix = choose_temp_base ();
1035 base_file_name = (char *) xmalloc (strlen (fileprefix) + 6);
1036 sprintf (base_file_name, "%s.base",
1037 (dontdeltemps) ? mybasename (fileprefix) : fileprefix);
1038 delete_base_file = 1;
1039 free (fileprefix);
1040 }
1041
1042 {
1043 int quote;
1044
1045 dyn_string_t step1 = dyn_string_new (driver_cmdline->length
1046 + strlen (base_file_name)
1047 + 20);
1048 dyn_string_append_cstr (step1, "-Wl,--base-file,");
1049 quote = (strchr (base_file_name, ' ')
1050 || strchr (base_file_name, '\t'));
1051 dyn_string_append_cstr (step1,
1052 (quote) ? "\"" : "");
1053 dyn_string_append_cstr (step1, base_file_name);
1054 dyn_string_append_cstr (step1,
1055 (quote) ? "\"" : "");
1056 if (driver_cmdline->length)
1057 {
1058 dyn_string_append_cstr (step1, " ");
1059 dyn_string_append_cstr (step1, driver_cmdline->s);
1060 }
1061
1062 if (run (driver_name, step1->s))
1063 cleanup_and_exit (1);
1064
1065 dyn_string_delete (step1);
1066 }
1067
1068 /* Step 2. generate the exp file by running dlltool.
1069 dlltool command line will look like the following:
1070
1071 % dlltool -Wl,--dll --Wl,--base-file,foo.base [rest of command line]
1072
1073 If the user does not specify a base name, create temporary one that
1074 is deleted at exit. */
1075
1076 if (! exp_file_name)
1077 {
1078 char *p = strrchr (dll_name, '.');
1079 size_t prefix_len = (p) ? (size_t) (p - dll_name) : strlen (dll_name);
1080
1081 exp_file_name = (char *) xmalloc (prefix_len + 4 + 1);
1082 strncpy (exp_file_name, dll_name, prefix_len);
1083 exp_file_name[prefix_len] = '\0';
1084 strcat (exp_file_name, ".exp");
1085 delete_exp_file = 1;
1086 }
1087
1088 {
1089 int quote;
1090
1091 dyn_string_t step2 = dyn_string_new (dlltool_cmdline->length
1092 + strlen (base_file_name)
1093 + strlen (exp_file_name)
1094 + 20);
1095
1096 dyn_string_append_cstr (step2, "--base-file ");
1097 quote = (strchr (base_file_name, ' ')
1098 || strchr (base_file_name, '\t'));
1099 dyn_string_append_cstr (step2,
1100 (quote) ? "\"" : "");
1101 dyn_string_append_cstr (step2, base_file_name);
1102 dyn_string_append_cstr (step2,
1103 (quote) ? "\" " : " ");
1104
1105 dyn_string_append_cstr (step2, "--output-exp ");
1106 quote = (strchr (exp_file_name, ' ')
1107 || strchr (exp_file_name, '\t'));
1108 dyn_string_append_cstr (step2,
1109 (quote) ? "\"" : "");
1110 dyn_string_append_cstr (step2, exp_file_name);
1111 dyn_string_append_cstr (step2,
1112 (quote) ? "\"" : "");
1113
1114 if (dlltool_cmdline->length)
1115 {
1116 dyn_string_append_cstr (step2, " ");
1117 dyn_string_append_cstr (step2, dlltool_cmdline->s);
1118 }
1119
1120 if (run (dlltool_name, step2->s))
1121 cleanup_and_exit (1);
1122
1123 dyn_string_delete (step2);
1124 }
1125
1126 /*
1127 * Step 3. Call GCC/LD to again, adding the exp file this time.
1128 * driver command line will look like the following:
1129 *
1130 * % gcc -Wl,--dll --Wl,--base-file,foo.base foo.exp [rest ...]
1131 */
1132
1133 {
1134 int quote;
1135
1136 dyn_string_t step3 = dyn_string_new (driver_cmdline->length
1137 + strlen (exp_file_name)
1138 + strlen (base_file_name)
1139 + 20);
1140 dyn_string_append_cstr (step3, "-Wl,--base-file,");
1141 quote = (strchr (base_file_name, ' ')
1142 || strchr (base_file_name, '\t'));
1143 dyn_string_append_cstr (step3,
1144 (quote) ? "\"" : "");
1145 dyn_string_append_cstr (step3, base_file_name);
1146 dyn_string_append_cstr (step3,
1147 (quote) ? "\" " : " ");
1148
1149 quote = (strchr (exp_file_name, ' ')
1150 || strchr (exp_file_name, '\t'));
1151 dyn_string_append_cstr (step3,
1152 (quote) ? "\"" : "");
1153 dyn_string_append_cstr (step3, exp_file_name);
1154 dyn_string_append_cstr (step3,
1155 (quote) ? "\"" : "");
1156
1157 if (driver_cmdline->length)
1158 {
1159 dyn_string_append_cstr (step3, " ");
1160 dyn_string_append_cstr (step3, driver_cmdline->s);
1161 }
1162
1163 if (run (driver_name, step3->s))
1164 cleanup_and_exit (1);
1165
1166 dyn_string_delete (step3);
1167 }
1168
1169
1170 /*
1171 * Step 4. Run DLLTOOL again using the same command line.
1172 */
1173
1174 {
1175 int quote;
1176 dyn_string_t step4 = dyn_string_new (dlltool_cmdline->length
1177 + strlen (base_file_name)
1178 + strlen (exp_file_name)
1179 + 20);
1180
1181 dyn_string_append_cstr (step4, "--base-file ");
1182 quote = (strchr (base_file_name, ' ')
1183 || strchr (base_file_name, '\t'));
1184 dyn_string_append_cstr (step4,
1185 (quote) ? "\"" : "");
1186 dyn_string_append_cstr (step4, base_file_name);
1187 dyn_string_append_cstr (step4,
1188 (quote) ? "\" " : " ");
1189
1190 dyn_string_append_cstr (step4, "--output-exp ");
1191 quote = (strchr (exp_file_name, ' ')
1192 || strchr (exp_file_name, '\t'));
1193 dyn_string_append_cstr (step4,
1194 (quote) ? "\"" : "");
1195 dyn_string_append_cstr (step4, exp_file_name);
1196 dyn_string_append_cstr (step4,
1197 (quote) ? "\"" : "");
1198
1199 if (dlltool_cmdline->length)
1200 {
1201 dyn_string_append_cstr (step4, " ");
1202 dyn_string_append_cstr (step4, dlltool_cmdline->s);
1203 }
1204
1205 if (output_lib_file_name)
1206 {
1207 dyn_string_append_cstr (step4, " --output-lib ");
1208 dyn_string_append_cstr (step4, output_lib_file_name);
1209 }
1210
1211 if (run (dlltool_name, step4->s))
1212 cleanup_and_exit (1);
1213
1214 dyn_string_delete (step4);
1215 }
1216
1217
1218 /*
1219 * Step 5. Link it all together and be done with it.
1220 * driver command line will look like the following:
1221 *
1222 * % gcc -Wl,--dll foo.exp [rest ...]
1223 *
1224 */
1225
1226 {
1227 int quote;
1228
1229 dyn_string_t step5 = dyn_string_new (driver_cmdline->length
1230 + strlen (exp_file_name)
1231 + 20);
1232 quote = (strchr (exp_file_name, ' ')
1233 || strchr (exp_file_name, '\t'));
1234 dyn_string_append_cstr (step5,
1235 (quote) ? "\"" : "");
1236 dyn_string_append_cstr (step5, exp_file_name);
1237 dyn_string_append_cstr (step5,
1238 (quote) ? "\"" : "");
1239
1240 if (driver_cmdline->length)
1241 {
1242 dyn_string_append_cstr (step5, " ");
1243 dyn_string_append_cstr (step5, driver_cmdline->s);
1244 }
1245
1246 if (run (driver_name, step5->s))
1247 cleanup_and_exit (1);
1248
1249 dyn_string_delete (step5);
1250 }
1251
1252 cleanup_and_exit (0);
1253
1254 return 0;
1255 }
1256