1 /* dllwrap.c -- wrapper for DLLTOOL and GCC to generate PE style DLLs
2 Copyright (C) 1998-2016 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, *errmsg_arg;
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 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
634 setlocale (LC_MESSAGES, "");
635 #endif
636 #if defined (HAVE_SETLOCALE)
637 setlocale (LC_CTYPE, "");
638 #endif
639 bindtextdomain (PACKAGE, LOCALEDIR);
640 textdomain (PACKAGE);
641
642 expandargv (&argc, &argv);
643
644 saved_argv = (char **) xmalloc (argc * sizeof (char*));
645 dlltool_arg_indices = (int *) xmalloc (argc * sizeof (int));
646 driver_arg_indices = (int *) xmalloc (argc * sizeof (int));
647 for (i = 0; i < argc; ++i)
648 {
649 size_t len = strlen (argv[i]);
650 char *arg = (char *) xmalloc (len + 1);
651 strcpy (arg, argv[i]);
652 cmdline_len += len;
653 saved_argv[i] = arg;
654 dlltool_arg_indices[i] = 0;
655 driver_arg_indices[i] = 1;
656 }
657 cmdline_len++;
658
659 /* We recognize dllwrap and dlltool options, and everything else is
660 passed onto the language driver (eg., to GCC). We collect options
661 to dlltool and driver in dlltool_args and driver_args. */
662
663 opterr = 0;
664 while ((c = getopt_long_only (argc, argv, "nkAqve:Uho:l:L:I:",
665 long_options, (int *) 0)) != EOF)
666 {
667 int dlltool_arg;
668 int driver_arg;
669 int single_word_option_value_pair;
670
671 dlltool_arg = 0;
672 driver_arg = 1;
673 single_word_option_value_pair = 0;
674
675 if (c != '?')
676 {
677 /* We recognize this option, so it has to be either dllwrap or
678 dlltool option. Do not pass to driver unless it's one of the
679 generic options that are passed to all the tools (such as -v)
680 which are dealt with later. */
681 driver_arg = 0;
682 }
683
684 /* deal with generic and dllwrap options first. */
685 switch (c)
686 {
687 case 'h':
688 usage (stdout, 0);
689 break;
690 case 'q':
691 verbose = 0;
692 break;
693 case 'v':
694 verbose = 1;
695 break;
696 case OPTION_VERSION:
697 print_version (prog_name);
698 break;
699 case 'e':
700 entry_point = optarg;
701 break;
702 case OPTION_IMAGE_BASE:
703 image_base_str = optarg;
704 break;
705 case OPTION_DEF:
706 def_file_name = optarg;
707 def_file_seen = 1;
708 delete_def_file = 0;
709 break;
710 case 'n':
711 dontdeltemps = 1;
712 dlltool_arg = 1;
713 break;
714 case 'o':
715 dll_file_name = optarg;
716 break;
717 case 'I':
718 case 'l':
719 case 'L':
720 driver_arg = 1;
721 break;
722 case OPTION_DLLNAME:
723 dll_name = optarg;
724 break;
725 case OPTION_DRY_RUN:
726 dry_run = 1;
727 break;
728 case OPTION_DRIVER_NAME:
729 driver_name = optarg;
730 break;
731 case OPTION_DRIVER_FLAGS:
732 driver_flags = optarg;
733 break;
734 case OPTION_DLLTOOL_NAME:
735 dlltool_name = optarg;
736 break;
737 case OPTION_TARGET:
738 target = optarg;
739 break;
740 case OPTION_MNO_CYGWIN:
741 target = "i386-mingw32";
742 break;
743 case OPTION_NO_LEADING_UNDERSCORE:
744 is_leading_underscore = 0;
745 break;
746 case OPTION_LEADING_UNDERSCORE:
747 is_leading_underscore = 1;
748 break;
749 case OPTION_BASE_FILE:
750 base_file_name = optarg;
751 delete_base_file = 0;
752 break;
753 case OPTION_OUTPUT_EXP:
754 exp_file_name = optarg;
755 delete_exp_file = 0;
756 break;
757 case OPTION_EXPORT_ALL_SYMS:
758 export_all = 1;
759 break;
760 case OPTION_OUTPUT_LIB:
761 output_lib_file_name = optarg;
762 break;
763 case '?':
764 break;
765 default:
766 dlltool_arg = 1;
767 break;
768 }
769
770 /* Handle passing through --option=value case. */
771 if (optarg
772 && saved_argv[optind-1][0] == '-'
773 && saved_argv[optind-1][1] == '-'
774 && strchr (saved_argv[optind-1], '='))
775 single_word_option_value_pair = 1;
776
777 if (dlltool_arg)
778 {
779 dlltool_arg_indices[optind-1] = 1;
780 if (optarg && ! single_word_option_value_pair)
781 {
782 dlltool_arg_indices[optind-2] = 1;
783 }
784 }
785
786 if (! driver_arg)
787 {
788 driver_arg_indices[optind-1] = 0;
789 if (optarg && ! single_word_option_value_pair)
790 {
791 driver_arg_indices[optind-2] = 0;
792 }
793 }
794 }
795
796 /* Sanity checks. */
797 if (! dll_name && ! dll_file_name)
798 {
799 warn (_("Must provide at least one of -o or --dllname options"));
800 exit (1);
801 }
802 else if (! dll_name)
803 {
804 dll_name = xstrdup (mybasename (dll_file_name));
805 }
806 else if (! dll_file_name)
807 {
808 dll_file_name = xstrdup (dll_name);
809 }
810
811 /* Deduce driver-name and dlltool-name from our own. */
812 if (driver_name == NULL)
813 driver_name = deduce_name ("gcc");
814
815 if (dlltool_name == NULL)
816 dlltool_name = deduce_name ("dlltool");
817
818 if (! def_file_seen)
819 {
820 char *fileprefix = choose_temp_base ();
821
822 def_file_name = (char *) xmalloc (strlen (fileprefix) + 5);
823 sprintf (def_file_name, "%s.def",
824 (dontdeltemps) ? mybasename (fileprefix) : fileprefix);
825 delete_def_file = 1;
826 free (fileprefix);
827 delete_def_file = 1;
828 warn (_("no export definition file provided.\n\
829 Creating one, but that may not be what you want"));
830 }
831
832 /* Set the target platform. */
833 if (strstr (target, "cygwin"))
834 which_target = CYGWIN_TARGET;
835 else if (strstr (target, "mingw"))
836 which_target = MINGW_TARGET;
837 else
838 which_target = UNKNOWN_TARGET;
839
840 if (! strncmp (target, "arm", 3))
841 which_cpu = ARM_CPU;
842 else if (!strncmp (target, "x86_64", 6)
843 || !strncmp (target, "athlon64", 8)
844 || !strncmp (target, "amd64", 5))
845 which_cpu = X64_CPU;
846 else if (target[0] == 'i' && (target[1] >= '3' && target[1] <= '6')
847 && target[2] == '8' && target[3] == '6')
848 which_cpu = X86_CPU;
849 else
850 which_cpu = UNKNOWN_CPU;
851
852 if (is_leading_underscore == -1)
853 is_leading_underscore = (which_cpu != X64_CPU && which_cpu != ARM_CPU);
854
855 /* Re-create the command lines as a string, taking care to quote stuff. */
856 dlltool_cmdline = dyn_string_new (cmdline_len);
857 if (verbose)
858 dyn_string_append_cstr (dlltool_cmdline, " -v");
859
860 dyn_string_append_cstr (dlltool_cmdline, " --dllname ");
861 dyn_string_append_cstr (dlltool_cmdline, dll_name);
862
863 for (i = 1; i < argc; ++i)
864 {
865 if (dlltool_arg_indices[i])
866 {
867 char *arg = saved_argv[i];
868 int quote = (strchr (arg, ' ') || strchr (arg, '\t'));
869 dyn_string_append_cstr (dlltool_cmdline,
870 (quote) ? " \"" : " ");
871 dyn_string_append_cstr (dlltool_cmdline, arg);
872 dyn_string_append_cstr (dlltool_cmdline,
873 (quote) ? "\"" : "");
874 }
875 }
876
877 driver_cmdline = dyn_string_new (cmdline_len);
878 if (! driver_flags || strlen (driver_flags) == 0)
879 {
880 switch (which_target)
881 {
882 case CYGWIN_TARGET:
883 driver_flags = cygwin_driver_flags;
884 break;
885
886 case MINGW_TARGET:
887 driver_flags = mingw32_driver_flags;
888 break;
889
890 default:
891 driver_flags = generic_driver_flags;
892 break;
893 }
894 }
895 dyn_string_append_cstr (driver_cmdline, driver_flags);
896 dyn_string_append_cstr (driver_cmdline, " -o ");
897 dyn_string_append_cstr (driver_cmdline, dll_file_name);
898
899 if (is_leading_underscore == 0)
900 dyn_string_append_cstr (driver_cmdline, " --no-leading-underscore");
901 else if (is_leading_underscore == 1)
902 dyn_string_append_cstr (driver_cmdline, " --leading-underscore");
903
904 if (! entry_point || strlen (entry_point) == 0)
905 {
906 const char *prefix = (is_leading_underscore != 0 ? "_" : "");
907 const char *postfix = "";
908 const char *name_entry;
909
910 if (which_cpu == X86_CPU || which_cpu == UNKNOWN_CPU)
911 postfix = "@12";
912
913 switch (which_target)
914 {
915 case CYGWIN_TARGET:
916 name_entry = "_cygwin_dll_entry";
917 break;
918
919 case MINGW_TARGET:
920 name_entry = "DllMainCRTStartup";
921 break;
922
923 default:
924 name_entry = "DllMain";
925 break;
926 }
927 entry_point =
928 (char *) malloc (strlen (name_entry) + strlen (prefix)
929 + strlen (postfix) + 1);
930 sprintf (entry_point, "%s%s%s", prefix, name_entry, postfix);
931 }
932 dyn_string_append_cstr (driver_cmdline, " -Wl,-e,");
933 dyn_string_append_cstr (driver_cmdline, entry_point);
934 dyn_string_append_cstr (dlltool_cmdline, " --exclude-symbol=");
935 dyn_string_append_cstr (dlltool_cmdline,
936 (entry_point[0] == '_') ? entry_point+1 : entry_point);
937
938 if (! image_base_str || strlen (image_base_str) == 0)
939 {
940 char *tmpbuf = (char *) xmalloc (sizeof ("0x12345678") + 1);
941 unsigned long hash = strhash (dll_file_name);
942 sprintf (tmpbuf, "0x%.8lX", 0x60000000|((hash<<16)&0xFFC0000));
943 image_base_str = tmpbuf;
944 }
945
946 dyn_string_append_cstr (driver_cmdline, " -Wl,--image-base,");
947 dyn_string_append_cstr (driver_cmdline, image_base_str);
948
949 if (verbose)
950 {
951 dyn_string_append_cstr (driver_cmdline, " -v");
952 }
953
954 for (i = 1; i < argc; ++i)
955 {
956 if (driver_arg_indices[i])
957 {
958 char *arg = saved_argv[i];
959 int quote = (strchr (arg, ' ') || strchr (arg, '\t'));
960 dyn_string_append_cstr (driver_cmdline,
961 (quote) ? " \"" : " ");
962 dyn_string_append_cstr (driver_cmdline, arg);
963 dyn_string_append_cstr (driver_cmdline,
964 (quote) ? "\"" : "");
965 }
966 }
967
968 /* Step pre-1. If no --def <EXPORT_DEF> is specified,
969 then create it and then pass it on. */
970
971 if (! def_file_seen)
972 {
973 dyn_string_t step_pre1;
974
975 step_pre1 = dyn_string_new (1024);
976
977 dyn_string_append_cstr (step_pre1, dlltool_cmdline->s);
978 if (export_all)
979 {
980 dyn_string_append_cstr (step_pre1, " --export-all --exclude-symbol=");
981 dyn_string_append_cstr (step_pre1,
982 "_cygwin_dll_entry@12,DllMainCRTStartup@12,DllMain@12,DllEntryPoint@12");
983 }
984 dyn_string_append_cstr (step_pre1, " --output-def ");
985 dyn_string_append_cstr (step_pre1, def_file_name);
986
987 for (i = 1; i < argc; ++i)
988 {
989 if (driver_arg_indices[i])
990 {
991 char *arg = saved_argv[i];
992 size_t len = strlen (arg);
993 if (len >= 2 && arg[len-2] == '.'
994 && (arg[len-1] == 'o' || arg[len-1] == 'a'))
995 {
996 int quote = (strchr (arg, ' ') || strchr (arg, '\t'));
997 dyn_string_append_cstr (step_pre1,
998 (quote) ? " \"" : " ");
999 dyn_string_append_cstr (step_pre1, arg);
1000 dyn_string_append_cstr (step_pre1,
1001 (quote) ? "\"" : "");
1002 }
1003 }
1004 }
1005
1006 if (run (dlltool_name, step_pre1->s))
1007 cleanup_and_exit (1);
1008
1009 dyn_string_delete (step_pre1);
1010 }
1011
1012 dyn_string_append_cstr (dlltool_cmdline, " --def ");
1013 dyn_string_append_cstr (dlltool_cmdline, def_file_name);
1014
1015 if (verbose)
1016 {
1017 fprintf (stderr, _("DLLTOOL name : %s\n"), dlltool_name);
1018 fprintf (stderr, _("DLLTOOL options : %s\n"), dlltool_cmdline->s);
1019 fprintf (stderr, _("DRIVER name : %s\n"), driver_name);
1020 fprintf (stderr, _("DRIVER options : %s\n"), driver_cmdline->s);
1021 }
1022
1023 /* Step 1. Call GCC/LD to create base relocation file. If using GCC, the
1024 driver command line will look like the following:
1025
1026 % gcc -Wl,--dll --Wl,--base-file,foo.base [rest of command line]
1027
1028 If the user does not specify a base name, create temporary one that
1029 is deleted at exit. */
1030
1031 if (! base_file_name)
1032 {
1033 char *fileprefix = choose_temp_base ();
1034 base_file_name = (char *) xmalloc (strlen (fileprefix) + 6);
1035 sprintf (base_file_name, "%s.base",
1036 (dontdeltemps) ? mybasename (fileprefix) : fileprefix);
1037 delete_base_file = 1;
1038 free (fileprefix);
1039 }
1040
1041 {
1042 int quote;
1043
1044 dyn_string_t step1 = dyn_string_new (driver_cmdline->length
1045 + strlen (base_file_name)
1046 + 20);
1047 dyn_string_append_cstr (step1, "-Wl,--base-file,");
1048 quote = (strchr (base_file_name, ' ')
1049 || strchr (base_file_name, '\t'));
1050 dyn_string_append_cstr (step1,
1051 (quote) ? "\"" : "");
1052 dyn_string_append_cstr (step1, base_file_name);
1053 dyn_string_append_cstr (step1,
1054 (quote) ? "\"" : "");
1055 if (driver_cmdline->length)
1056 {
1057 dyn_string_append_cstr (step1, " ");
1058 dyn_string_append_cstr (step1, driver_cmdline->s);
1059 }
1060
1061 if (run (driver_name, step1->s))
1062 cleanup_and_exit (1);
1063
1064 dyn_string_delete (step1);
1065 }
1066
1067 /* Step 2. generate the exp file by running dlltool.
1068 dlltool command line will look like the following:
1069
1070 % dlltool -Wl,--dll --Wl,--base-file,foo.base [rest of command line]
1071
1072 If the user does not specify a base name, create temporary one that
1073 is deleted at exit. */
1074
1075 if (! exp_file_name)
1076 {
1077 char *p = strrchr (dll_name, '.');
1078 size_t prefix_len = (p) ? (size_t) (p - dll_name) : strlen (dll_name);
1079
1080 exp_file_name = (char *) xmalloc (prefix_len + 4 + 1);
1081 strncpy (exp_file_name, dll_name, prefix_len);
1082 exp_file_name[prefix_len] = '\0';
1083 strcat (exp_file_name, ".exp");
1084 delete_exp_file = 1;
1085 }
1086
1087 {
1088 int quote;
1089
1090 dyn_string_t step2 = dyn_string_new (dlltool_cmdline->length
1091 + strlen (base_file_name)
1092 + strlen (exp_file_name)
1093 + 20);
1094
1095 dyn_string_append_cstr (step2, "--base-file ");
1096 quote = (strchr (base_file_name, ' ')
1097 || strchr (base_file_name, '\t'));
1098 dyn_string_append_cstr (step2,
1099 (quote) ? "\"" : "");
1100 dyn_string_append_cstr (step2, base_file_name);
1101 dyn_string_append_cstr (step2,
1102 (quote) ? "\" " : " ");
1103
1104 dyn_string_append_cstr (step2, "--output-exp ");
1105 quote = (strchr (exp_file_name, ' ')
1106 || strchr (exp_file_name, '\t'));
1107 dyn_string_append_cstr (step2,
1108 (quote) ? "\"" : "");
1109 dyn_string_append_cstr (step2, exp_file_name);
1110 dyn_string_append_cstr (step2,
1111 (quote) ? "\"" : "");
1112
1113 if (dlltool_cmdline->length)
1114 {
1115 dyn_string_append_cstr (step2, " ");
1116 dyn_string_append_cstr (step2, dlltool_cmdline->s);
1117 }
1118
1119 if (run (dlltool_name, step2->s))
1120 cleanup_and_exit (1);
1121
1122 dyn_string_delete (step2);
1123 }
1124
1125 /*
1126 * Step 3. Call GCC/LD to again, adding the exp file this time.
1127 * driver command line will look like the following:
1128 *
1129 * % gcc -Wl,--dll --Wl,--base-file,foo.base foo.exp [rest ...]
1130 */
1131
1132 {
1133 int quote;
1134
1135 dyn_string_t step3 = dyn_string_new (driver_cmdline->length
1136 + strlen (exp_file_name)
1137 + strlen (base_file_name)
1138 + 20);
1139 dyn_string_append_cstr (step3, "-Wl,--base-file,");
1140 quote = (strchr (base_file_name, ' ')
1141 || strchr (base_file_name, '\t'));
1142 dyn_string_append_cstr (step3,
1143 (quote) ? "\"" : "");
1144 dyn_string_append_cstr (step3, base_file_name);
1145 dyn_string_append_cstr (step3,
1146 (quote) ? "\" " : " ");
1147
1148 quote = (strchr (exp_file_name, ' ')
1149 || strchr (exp_file_name, '\t'));
1150 dyn_string_append_cstr (step3,
1151 (quote) ? "\"" : "");
1152 dyn_string_append_cstr (step3, exp_file_name);
1153 dyn_string_append_cstr (step3,
1154 (quote) ? "\"" : "");
1155
1156 if (driver_cmdline->length)
1157 {
1158 dyn_string_append_cstr (step3, " ");
1159 dyn_string_append_cstr (step3, driver_cmdline->s);
1160 }
1161
1162 if (run (driver_name, step3->s))
1163 cleanup_and_exit (1);
1164
1165 dyn_string_delete (step3);
1166 }
1167
1168
1169 /*
1170 * Step 4. Run DLLTOOL again using the same command line.
1171 */
1172
1173 {
1174 int quote;
1175 dyn_string_t step4 = dyn_string_new (dlltool_cmdline->length
1176 + strlen (base_file_name)
1177 + strlen (exp_file_name)
1178 + 20);
1179
1180 dyn_string_append_cstr (step4, "--base-file ");
1181 quote = (strchr (base_file_name, ' ')
1182 || strchr (base_file_name, '\t'));
1183 dyn_string_append_cstr (step4,
1184 (quote) ? "\"" : "");
1185 dyn_string_append_cstr (step4, base_file_name);
1186 dyn_string_append_cstr (step4,
1187 (quote) ? "\" " : " ");
1188
1189 dyn_string_append_cstr (step4, "--output-exp ");
1190 quote = (strchr (exp_file_name, ' ')
1191 || strchr (exp_file_name, '\t'));
1192 dyn_string_append_cstr (step4,
1193 (quote) ? "\"" : "");
1194 dyn_string_append_cstr (step4, exp_file_name);
1195 dyn_string_append_cstr (step4,
1196 (quote) ? "\"" : "");
1197
1198 if (dlltool_cmdline->length)
1199 {
1200 dyn_string_append_cstr (step4, " ");
1201 dyn_string_append_cstr (step4, dlltool_cmdline->s);
1202 }
1203
1204 if (output_lib_file_name)
1205 {
1206 dyn_string_append_cstr (step4, " --output-lib ");
1207 dyn_string_append_cstr (step4, output_lib_file_name);
1208 }
1209
1210 if (run (dlltool_name, step4->s))
1211 cleanup_and_exit (1);
1212
1213 dyn_string_delete (step4);
1214 }
1215
1216
1217 /*
1218 * Step 5. Link it all together and be done with it.
1219 * driver command line will look like the following:
1220 *
1221 * % gcc -Wl,--dll foo.exp [rest ...]
1222 *
1223 */
1224
1225 {
1226 int quote;
1227
1228 dyn_string_t step5 = dyn_string_new (driver_cmdline->length
1229 + strlen (exp_file_name)
1230 + 20);
1231 quote = (strchr (exp_file_name, ' ')
1232 || strchr (exp_file_name, '\t'));
1233 dyn_string_append_cstr (step5,
1234 (quote) ? "\"" : "");
1235 dyn_string_append_cstr (step5, exp_file_name);
1236 dyn_string_append_cstr (step5,
1237 (quote) ? "\"" : "");
1238
1239 if (driver_cmdline->length)
1240 {
1241 dyn_string_append_cstr (step5, " ");
1242 dyn_string_append_cstr (step5, driver_cmdline->s);
1243 }
1244
1245 if (run (driver_name, step5->s))
1246 cleanup_and_exit (1);
1247
1248 dyn_string_delete (step5);
1249 }
1250
1251 cleanup_and_exit (0);
1252
1253 return 0;
1254 }
1255