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4e81a331 RS |
1 | /* Collect static initialization info into data structures |
2 | that can be traversed by C++ initialization and finalization | |
3 | routines. | |
4 | ||
5 | Copyright (C) 1992 Free Software Foundation, Inc. | |
6 | Contributed by Chris Smith (csmith@convex.com). | |
7 | Heavily modified by Michael Meissner (meissner@osf.org), | |
8 | Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com). | |
9 | ||
10 | This file is part of GNU CC. | |
11 | ||
12 | GNU CC is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2, or (at your option) | |
15 | any later version. | |
16 | ||
17 | GNU CC is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with GNU CC; see the file COPYING. If not, write to | |
24 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
25 | ||
26 | ||
27 | /* Build tables of static constructors and destructors and run ld. */ | |
28 | ||
29 | #include <sys/types.h> | |
30 | #include <stdio.h> | |
31 | #include <string.h> | |
32 | #include <stdlib.h> | |
33 | #include <ctype.h> | |
34 | #include "gstddef.h" | |
35 | #include <errno.h> | |
36 | #include <signal.h> | |
37 | #include <sys/file.h> | |
38 | #include <sys/stat.h> | |
39 | #include <sys/wait.h> | |
40 | ||
41 | #define COLLECT | |
42 | ||
43 | #include "config.h" | |
44 | ||
45 | #ifndef __STDC__ | |
46 | #include "gvarargs.h" | |
47 | #define generic char | |
48 | #define PROTO(x) () | |
49 | #define const | |
50 | ||
51 | #else | |
52 | #include "stdarg.h" | |
53 | #define generic void | |
54 | #define PROTO(x) x | |
55 | #endif | |
56 | ||
57 | #ifdef OBJECT_FORMAT_ROSE | |
58 | ||
59 | #ifdef _OSF_SOURCE | |
60 | #define USE_MMAP | |
61 | #endif | |
62 | ||
63 | #ifdef USE_MMAP | |
64 | #include <sys/mman.h> | |
65 | #endif | |
66 | ||
67 | #include <unistd.h> | |
68 | #include <mach_o_format.h> | |
69 | #include <mach_o_header.h> | |
70 | #include <mach_o_vals.h> | |
71 | #include <mach_o_types.h> | |
72 | #endif /* OBJECT_FORMAT_ROSE */ | |
73 | ||
74 | /* Default flags to pass to nm. */ | |
75 | #ifndef NM_FLAGS | |
76 | #define NM_FLAGS "-p" | |
77 | #endif | |
78 | ||
79 | #ifdef USG | |
80 | #define vfork fork | |
81 | #endif | |
82 | ||
83 | /* On MSDOS, write temp files in current dir | |
84 | because there's no place else we can expect to use. */ | |
85 | #if __MSDOS__ | |
86 | #ifndef P_tmpdir | |
87 | #define P_tmpdir "./" | |
88 | #endif | |
89 | #endif | |
90 | ||
91 | \f | |
92 | /* Linked lists of constructor and destructor names. */ | |
93 | ||
94 | struct id | |
95 | { | |
96 | struct id *next; | |
97 | int sequence; | |
98 | char name[1]; | |
99 | }; | |
100 | ||
101 | struct head | |
102 | { | |
103 | struct id *first; | |
104 | struct id *last; | |
105 | int number; | |
106 | }; | |
107 | ||
108 | /* Enumeration giving which pass this is for scanning the program file. */ | |
109 | ||
110 | enum pass { | |
111 | PASS_FIRST, /* without constructors */ | |
112 | PASS_SECOND /* with constructors linked in */ | |
113 | }; | |
114 | ||
115 | extern char *sys_siglist[]; | |
116 | extern char *version_string; | |
117 | ||
118 | static int vflag; /* true if -v */ | |
119 | static int rflag; /* true if -r */ | |
120 | ||
121 | static int debug; /* true if -debug */ | |
122 | ||
123 | static int temp_filename_length; /* Length of temp_filename */ | |
124 | static char *temp_filename; /* Base of temp filenames */ | |
125 | static char *c_file; /* <xxx>.c for constructor/destructor list. */ | |
126 | static char *o_file; /* <xxx>.o for constructor/destructor list. */ | |
127 | static char *nm_file_name; /* pathname of nm */ | |
128 | ||
129 | static struct head constructors; /* list of constructors found */ | |
130 | static struct head destructors; /* list of destructors found */ | |
131 | ||
132 | extern char *getenv PROTO(( const char * )); | |
133 | extern char *mktemp PROTO(( char * )); | |
134 | extern int vfork PROTO(( void )); | |
135 | static void add_to_list PROTO(( struct head *headp, char *name )); | |
136 | static void scan_prog_file PROTO(( char *, enum pass )); | |
137 | static void fork_execute PROTO(( char *, char **argv )); | |
138 | static void do_wait PROTO(( char * )); | |
139 | static void write_c_file PROTO(( FILE *, char * )); | |
140 | static void my_exit PROTO(( int )); | |
141 | static void handler PROTO(( int )); | |
142 | static void maybe_unlink PROTO(( char * )); | |
143 | static void choose_temp_base PROTO(( void )); | |
144 | ||
145 | generic *xcalloc PROTO(( size_t, size_t )); | |
146 | generic *xmalloc PROTO(( size_t )); | |
147 | ||
148 | \f | |
149 | ||
150 | #if !defined(HAVE_STRERROR) && !defined(_OSF_SOURCE) | |
151 | ||
152 | char *strerror (e) | |
153 | int e; | |
154 | { | |
155 | extern char *sys_errlist[]; | |
156 | extern int sys_nerr; | |
157 | static char buffer[30]; | |
158 | ||
159 | if (!e) | |
160 | return ""; | |
161 | ||
162 | if (e > 0 && e < sys_nerr) | |
163 | return sys_errlist[e]; | |
164 | ||
165 | sprintf (buffer, "Unknown error %d", e); | |
166 | return buffer; | |
167 | } | |
168 | ||
169 | #endif | |
170 | ||
171 | \f | |
172 | /* Delete tempfiles and exit function. */ | |
173 | ||
174 | static void | |
175 | my_exit (status) | |
176 | int status; | |
177 | { | |
178 | if (c_file[0]) | |
179 | maybe_unlink (c_file); | |
180 | ||
181 | if (o_file[0]) | |
182 | maybe_unlink (o_file); | |
183 | ||
184 | exit (status); | |
185 | } | |
186 | ||
187 | \f | |
188 | #ifndef __STDC__ | |
189 | ||
190 | /* Die when sys call fails. */ | |
191 | ||
192 | /*VARARGS*/ | |
193 | static void | |
194 | fatal_perror (va_alist) | |
195 | { | |
196 | char *string; | |
197 | va_list vptr; | |
198 | int e = errno; | |
199 | ||
200 | va_start (vptr); | |
201 | string = va_arg (vptr, char *); | |
202 | fprintf (stderr, "collect: "); | |
203 | vfprintf (stderr, string, vptr); | |
204 | fprintf (stderr, ": %s\n", strerror (e)); | |
205 | va_end (vptr); | |
206 | my_exit (1); | |
207 | } | |
208 | ||
209 | /* Just die. */ | |
210 | ||
211 | /*VARARGS*/ | |
212 | static void | |
213 | fatal (va_alist) | |
214 | { | |
215 | char *string; | |
216 | va_list vptr; | |
217 | ||
218 | va_start (vptr); | |
219 | string = va_arg (vptr, char *); | |
220 | fprintf (stderr, "collect: "); | |
221 | vfprintf (stderr, string, vptr); | |
222 | fprintf (stderr, "\n"); | |
223 | va_end (vptr); | |
224 | my_exit (1); | |
225 | } | |
226 | ||
227 | /* Write error message. */ | |
228 | ||
229 | /*VARARGS*/ | |
230 | static void | |
231 | error (va_alist) | |
232 | { | |
233 | char *string; | |
234 | va_list vptr; | |
235 | ||
236 | va_start (vptr); | |
237 | string = va_arg (vptr, char *); | |
238 | fprintf (stderr, "collect: "); | |
239 | vfprintf (stderr, string, vptr); | |
240 | fprintf (stderr, "\n"); | |
241 | va_end (vptr); | |
242 | } | |
243 | ||
244 | #else | |
245 | ||
246 | static void | |
247 | fatal_perror (char *string, ...) | |
248 | { | |
249 | va_list vptr; | |
250 | int e = errno; | |
251 | ||
252 | va_start (vptr, string); | |
253 | fprintf (stderr, "collect: "); | |
254 | vfprintf (stderr, string, vptr); | |
255 | fprintf (stderr, ": %s\n", strerror (e)); | |
256 | va_end (vptr); | |
257 | my_exit (1); | |
258 | } | |
259 | ||
260 | /* Just die. */ | |
261 | ||
262 | static void | |
263 | fatal (char *string, ...) | |
264 | { | |
265 | va_list vptr; | |
266 | ||
267 | va_start (vptr, string); | |
268 | fprintf (stderr, "collect: "); | |
269 | vfprintf (stderr, string, vptr); | |
270 | fprintf (stderr, "\n"); | |
271 | va_end (vptr); | |
272 | my_exit (1); | |
273 | } | |
274 | ||
275 | /* Write error message. */ | |
276 | ||
277 | static void | |
278 | error (char *string, ...) | |
279 | { | |
280 | va_list vptr; | |
281 | ||
282 | va_start (vptr, string); | |
283 | fprintf (stderr, "collect: "); | |
284 | vfprintf (stderr, string, vptr); | |
285 | fprintf (stderr, "\n"); | |
286 | va_end (vptr); | |
287 | } | |
288 | #endif | |
289 | ||
290 | \f | |
291 | /* In case obstack is linked in, and abort is defined to fancy_abort, | |
292 | provide a default entry. */ | |
293 | ||
294 | void | |
295 | fancy_abort () | |
296 | { | |
297 | fatal ("internal error"); | |
298 | } | |
299 | ||
300 | \f | |
301 | static void | |
302 | handler (signo) | |
303 | int signo; | |
304 | { | |
305 | if (c_file[0]) | |
306 | maybe_unlink (c_file); | |
307 | ||
308 | if (o_file[0]) | |
309 | maybe_unlink (o_file); | |
310 | ||
311 | signal (signo, SIG_DFL); | |
312 | ||
313 | fatal ("Caught signal %d [%s]", signo, sys_siglist[signo]); | |
314 | kill (getpid (), signo); | |
315 | } | |
316 | ||
317 | \f | |
318 | generic * | |
319 | xcalloc (size1, size2) | |
320 | size_t size1, size2; | |
321 | { | |
322 | generic *ptr = calloc (size1, size2); | |
323 | if (ptr) | |
324 | return ptr; | |
325 | ||
326 | fatal ("Out of memory."); | |
327 | return (generic *)0; | |
328 | } | |
329 | ||
330 | generic * | |
331 | xmalloc (size) | |
332 | size_t size; | |
333 | { | |
334 | generic *ptr = malloc (size); | |
335 | if (ptr) | |
336 | return ptr; | |
337 | ||
338 | fatal ("Out of memory."); | |
339 | return (generic *)0; | |
340 | } | |
341 | ||
342 | \f | |
343 | /* Compute a string to use as the base of all temporary file names. | |
344 | It is substituted for %g. */ | |
345 | ||
346 | static void | |
347 | choose_temp_base PROTO((void)) | |
348 | { | |
349 | char *base = getenv ("TMPDIR"); | |
350 | int len; | |
351 | ||
352 | if (base == (char *)0) | |
353 | { | |
354 | #ifdef P_tmpdir | |
355 | if (access (P_tmpdir, R_OK | W_OK) == 0) | |
356 | base = P_tmpdir; | |
357 | #endif | |
358 | if (base == (char *)0) | |
359 | { | |
360 | if (access ("/usr/tmp", R_OK | W_OK) == 0) | |
361 | base = "/usr/tmp/"; | |
362 | else | |
363 | base = "/tmp/"; | |
364 | } | |
365 | } | |
366 | ||
367 | len = strlen (base); | |
368 | temp_filename = xmalloc (len + sizeof("/ccXXXXXX")); | |
369 | strcpy (temp_filename, base); | |
370 | if (len > 0 && temp_filename[len-1] != '/') | |
371 | temp_filename[len++] = '/'; | |
372 | strcpy (temp_filename + len, "ccXXXXXX"); | |
373 | ||
374 | mktemp (temp_filename); | |
375 | temp_filename_length = strlen (temp_filename); | |
376 | } | |
377 | ||
378 | \f | |
379 | /* Main program. */ | |
380 | ||
381 | int | |
382 | main (argc, argv) | |
383 | int argc; | |
384 | char *argv[]; | |
385 | { | |
386 | char *outfile = "a.out"; | |
387 | char *arg; | |
388 | FILE *outf; | |
389 | char *ld_file_name; | |
390 | char *c_file_name; | |
391 | char *B_option; | |
392 | char *p; | |
393 | char *prefix; | |
394 | char **c_argv = (char **) xcalloc (sizeof (char *), argc+7); | |
395 | char **c_ptr = c_argv; | |
396 | char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+2); | |
397 | char **ld1 = ld1_argv; | |
398 | char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+5); | |
399 | char **ld2 = ld2_argv; | |
400 | int first_file; | |
401 | int len; | |
402 | int clen; | |
403 | ||
404 | #ifdef DEBUG | |
405 | debug = 1; | |
406 | vflag = 1; | |
407 | #endif | |
408 | ||
409 | if (argc < 2) | |
410 | fatal ("no arguments"); | |
411 | ||
412 | signal (SIGQUIT, handler); | |
413 | signal (SIGINT, handler); | |
414 | signal (SIGALRM, handler); | |
415 | signal (SIGHUP, handler); | |
416 | signal (SIGSEGV, handler); | |
417 | signal (SIGBUS, handler); | |
418 | ||
419 | /* Try to discover a valid linker/assembler/nm to use. */ | |
420 | len = strlen (argv[0]); | |
421 | prefix = (char *)0; | |
422 | if (len >= sizeof ("ld")-1) | |
423 | { | |
424 | p = argv[0] + len - sizeof ("ld") + 1; | |
425 | if (strcmp (p, "ld") == 0) | |
426 | { | |
427 | prefix = argv[0]; | |
428 | *p = '\0'; | |
429 | } | |
430 | } | |
431 | ||
432 | if (prefix == (char *)0) | |
433 | { | |
434 | p = strrchr (argv[0], '/'); | |
435 | if (p != (char *)0) | |
436 | { | |
437 | prefix = argv[0]; | |
438 | p[1] = '\0'; | |
439 | } | |
440 | ||
441 | #ifdef STANDARD_EXEC_PREFIX | |
442 | else if (access (STANDARD_EXEC_PREFIX, X_OK) == 0) | |
443 | prefix = STANDARD_EXEC_PREFIX; | |
444 | #endif | |
445 | ||
446 | #ifdef MD_EXEC_PREFIX | |
447 | else if (access (MD_EXEC_PREFIX, X_OK) == 0) | |
448 | prefix = MD_EXEC_PREFIX; | |
449 | #endif | |
450 | ||
451 | else if (access ("/usr/ccs/gcc", X_OK) == 0) | |
452 | prefix = "/usr/ccs/gcc/"; | |
453 | ||
454 | else if (access ("/usr/ccs/bin", X_OK) == 0) | |
455 | prefix = "/usr/ccs/bin/"; | |
456 | ||
457 | else | |
458 | prefix = "/bin/"; | |
459 | } | |
460 | ||
461 | clen = len = strlen (prefix); | |
462 | ||
463 | #ifdef STANDARD_BIN_PREFIX | |
464 | if (clen < sizeof (STANDARD_BIN_PREFIX) - 1) | |
465 | clen = sizeof (STANDARD_BIN_PREFIX) - 1; | |
466 | #endif | |
467 | ||
468 | ld_file_name = xcalloc (len + sizeof ("real-ld"), 1); | |
469 | c_file_name = xcalloc (clen + sizeof ("gcc"), 1); | |
470 | nm_file_name = xcalloc (len + sizeof ("gnm"), 1); | |
471 | B_option = xcalloc (len + sizeof ("-B"), 1); | |
472 | ||
473 | memcpy (ld_file_name, prefix, len); | |
474 | strcpy (ld_file_name + len, "real-ld"); | |
475 | if (access (ld_file_name, X_OK) < 0) | |
476 | { | |
477 | strcpy (ld_file_name + len, "gld"); | |
478 | if (access (ld_file_name, X_OK) < 0) | |
479 | { | |
480 | free (ld_file_name); | |
481 | #ifdef REAL_LD_FILE_NAME | |
482 | ld_file_name = REAL_LD_FILE_NAME; | |
483 | #else | |
484 | ld_file_name = (access ("/usr/bin/ld", X_OK) == 0) ? "/usr/bin/ld" : "/bin/ld"; | |
485 | #endif | |
486 | } | |
487 | } | |
488 | ||
489 | memcpy (c_file_name, prefix, len); | |
490 | strcpy (c_file_name + len, "gcc"); | |
491 | if (access (c_file_name, X_OK) < 0) | |
492 | { | |
493 | #ifdef STANDARD_BIN_PREFIX | |
494 | strcpy (c_file_name, STANDARD_BIN_PREFIX); | |
495 | strcat (c_file_name, "gcc"); | |
496 | if (access (c_file_name, X_OK) < 0) | |
497 | #endif | |
498 | { | |
499 | #ifdef STANDARD_EXEC_PREFIX | |
500 | strcpy (c_file_name, STANDARD_EXEC_PREFIX); | |
501 | strcat (c_file_name, "gcc"); | |
502 | if (access (c_file_name, X_OK) < 0) | |
503 | #endif | |
504 | { | |
505 | strcpy (c_file_name, "gcc"); | |
506 | } | |
507 | } | |
508 | } | |
509 | ||
510 | memcpy (nm_file_name, prefix, len); | |
511 | strcpy (nm_file_name + len, "nm"); | |
512 | if (access (nm_file_name, X_OK) < 0) | |
513 | { | |
514 | strcpy (nm_file_name + len, "gnm"); | |
515 | if (access (nm_file_name, X_OK) < 0) | |
516 | { | |
517 | free (nm_file_name); | |
518 | #ifdef REAL_NM_FILE_NAME | |
519 | nm_file_name = REAL_NM_FILE_NAME; | |
520 | #else | |
521 | nm_file_name = (access ("/usr/bin/nm", X_OK) == 0) ? "/usr/bin/nm" : "/bin/nm"; | |
522 | #endif | |
523 | } | |
524 | } | |
525 | ||
526 | strcpy (B_option, "-B"); | |
527 | strcpy (B_option + sizeof ("-B") - 1, prefix); | |
528 | ||
529 | *ld1++ = *ld2++ = "ld"; | |
530 | ||
531 | /* Make temp file names. */ | |
532 | choose_temp_base (); | |
533 | c_file = xcalloc (temp_filename_length + sizeof (".c"), 1); | |
534 | o_file = xcalloc (temp_filename_length + sizeof (".o"), 1); | |
535 | sprintf (c_file, "%s.c", temp_filename); | |
536 | sprintf (o_file, "%s.o", temp_filename); | |
537 | *c_ptr++ = "gcc"; | |
538 | *c_ptr++ = "-c"; | |
539 | *c_ptr++ = "-o"; | |
540 | *c_ptr++ = o_file; | |
541 | ||
542 | /* Parse arguments. Remember output file spec, pass the rest to ld. */ | |
543 | /* After the first file, put in the c++ rt0 */ | |
544 | first_file = 1; | |
545 | while ((arg = *++argv) != (char *)0) | |
546 | { | |
547 | *ld1++ = *ld2++ = arg; | |
548 | ||
549 | if (arg[0] == '-') | |
550 | switch (arg[1]) | |
551 | { | |
552 | case 'd': | |
553 | if (!strcmp (arg, "-debug")) | |
554 | { | |
555 | debug = 1; | |
556 | vflag = 1; | |
557 | ld1--; | |
558 | ld2--; | |
559 | } | |
560 | break; | |
561 | ||
562 | /* pass -f<xxx>, -B<xxx>, -b<xxx>, -V<xxx>, and -m<xxx> | |
563 | options to gcc. This allows options to be passed | |
564 | that affect search rules, and the size of pointers. */ | |
565 | case 'b': | |
566 | case 'B': | |
567 | case 'f': | |
568 | case 'm': | |
569 | case 'V': | |
570 | if (arg[1] != '\0') | |
571 | { | |
572 | ld1--; | |
573 | ld2--; | |
574 | *c_ptr++ = arg; | |
575 | } | |
576 | break; | |
577 | ||
578 | case 'o': | |
579 | outfile = (arg[2] == '\0') ? argv[1] : &arg[2]; | |
580 | break; | |
581 | ||
582 | case 'r': | |
583 | if (arg[2] == '\0') | |
584 | rflag = 1; | |
585 | break; | |
586 | ||
587 | case 'v': | |
588 | if (arg[2] == '\0') | |
589 | vflag = 1; | |
590 | break; | |
591 | } | |
592 | ||
593 | else if (first_file | |
594 | && (p = strrchr (arg, '.')) != (char *)0 | |
595 | && strcmp (p, ".o") == 0) | |
596 | { | |
597 | first_file = 0; | |
598 | *ld2++ = o_file; | |
599 | } | |
600 | } | |
601 | ||
602 | *c_ptr++ = B_option; | |
603 | *c_ptr++ = c_file; | |
604 | *c_ptr = *ld1 = *ld2 = (char *)0; | |
605 | ||
606 | if (vflag) | |
607 | { | |
608 | fprintf (stderr, "GNU COLLECT2 version %s", version_string); | |
609 | #ifdef TARGET_VERSION | |
610 | TARGET_VERSION; | |
611 | #endif | |
612 | fprintf (stderr, "\n"); | |
613 | } | |
614 | ||
615 | if (debug) | |
616 | { | |
617 | fprintf (stderr, "prefix = %s\n", prefix); | |
618 | fprintf (stderr, "ld_file_name = %s\n", ld_file_name); | |
619 | fprintf (stderr, "c_file_name = %s\n", c_file_name); | |
620 | fprintf (stderr, "nm_file_name = %s\n", nm_file_name); | |
621 | fprintf (stderr, "B_option = %s\n", B_option); | |
622 | fprintf (stderr, "c_file = %s\n", c_file); | |
623 | fprintf (stderr, "o_file = %s\n", o_file); | |
624 | } | |
625 | ||
626 | /* Load the program, searching all libraries. | |
627 | Examine the namelist with nm and search it for static constructors | |
628 | and destructors to call. | |
629 | Write the constructor and destructor tables to a .s file and reload. */ | |
630 | ||
631 | fork_execute (ld_file_name, ld1_argv); | |
632 | ||
633 | /* If -r, don't build the constructor or destructor list, just return now. */ | |
634 | if (rflag) | |
635 | return 0; | |
636 | ||
637 | scan_prog_file (outfile, PASS_FIRST); | |
638 | ||
639 | if (debug) | |
640 | { | |
641 | fprintf (stderr, "%d constructor(s) found\n", constructors.number); | |
642 | fprintf (stderr, "%d destructor(s) found\n", destructors.number); | |
643 | } | |
644 | ||
645 | if (constructors.number == 0 && destructors.number == 0) | |
646 | return 0; | |
647 | ||
648 | outf = fopen (c_file, "w"); | |
649 | if (outf == (FILE *)0) | |
650 | fatal_perror ("Can't write %s", c_file); | |
651 | ||
652 | write_c_file (outf, c_file); | |
653 | ||
654 | if (fclose (outf)) | |
655 | fatal_perror ("Can't close %s", c_file); | |
656 | ||
657 | if (debug) | |
658 | { | |
659 | fprintf (stderr, "\n========== outfile = %s, c_file = %s\n", outfile, c_file); | |
660 | write_c_file (stderr, "stderr"); | |
661 | fprintf (stderr, "========== end of c_file\n\n"); | |
662 | } | |
663 | ||
664 | /* Assemble the constructor and destructor tables. | |
665 | Link the tables in with the rest of the program. */ | |
666 | ||
667 | fork_execute (c_file_name, c_argv); | |
668 | fork_execute (ld_file_name, ld2_argv); | |
669 | ||
670 | /* Let scan_prog_file do any final mods (OSF/rose needs this for | |
671 | constructors/destructors in shared libraries. */ | |
672 | scan_prog_file (outfile, PASS_SECOND); | |
673 | ||
674 | maybe_unlink (c_file); | |
675 | maybe_unlink (o_file); | |
676 | return 0; | |
677 | } | |
678 | ||
679 | \f | |
680 | /* Wait for a process to finish, and exit if a non-zero status is found. */ | |
681 | ||
682 | static void | |
683 | do_wait (prog) | |
684 | char *prog; | |
685 | { | |
686 | int status; | |
687 | ||
688 | wait (&status); | |
689 | if (status) | |
690 | { | |
691 | int sig = WTERMSIG (status); | |
692 | int ret; | |
693 | ||
694 | if (sig != -1 && sig != 0) | |
695 | { | |
696 | error ("%s terminated with signal %d [%s]%s", | |
697 | prog, | |
698 | sig, | |
699 | sys_siglist[sig], | |
700 | (status & 0200) ? ", core dumped" : ""); | |
701 | ||
702 | my_exit (127); | |
703 | } | |
704 | ||
705 | ret = WEXITSTATUS (status); | |
706 | if (ret != -1 && ret != 0) | |
707 | { | |
708 | error ("%s returned %d exit status", prog, ret); | |
709 | my_exit (ret); | |
710 | } | |
711 | } | |
712 | } | |
713 | ||
714 | \f | |
715 | /* Fork and execute a program, and wait for the reply. */ | |
716 | ||
717 | static void | |
718 | fork_execute (prog, argv) | |
719 | char *prog; | |
720 | char **argv; | |
721 | { | |
722 | int pid; | |
723 | void (*int_handler) PROTO((int)); | |
724 | void (*quit_handler) PROTO((int)); | |
725 | ||
726 | if (vflag || debug) | |
727 | { | |
728 | char **p_argv; | |
729 | char *str; | |
730 | ||
731 | fprintf (stderr, "%s", prog); | |
732 | for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++) | |
733 | fprintf (stderr, " %s", str); | |
734 | ||
735 | fprintf (stderr, "\n"); | |
736 | } | |
737 | ||
738 | fflush (stdout); | |
739 | fflush (stderr); | |
740 | ||
741 | pid = vfork (); | |
742 | if (pid == -1) | |
743 | fatal_perror ("vfork"); | |
744 | ||
745 | if (pid == 0) /* child context */ | |
746 | { | |
747 | execvp (prog, argv); | |
748 | fatal_perror ("Execute %s", prog); | |
749 | } | |
750 | ||
751 | int_handler = (void (*)PROTO((int)))signal (SIGINT, SIG_IGN); | |
752 | quit_handler = (void (*)PROTO((int)))signal (SIGQUIT, SIG_IGN); | |
753 | ||
754 | do_wait (prog); | |
755 | ||
756 | signal (SIGINT, int_handler); | |
757 | signal (SIGQUIT, quit_handler); | |
758 | } | |
759 | ||
760 | \f | |
761 | /* Unlink a file unless we are debugging. */ | |
762 | ||
763 | static void | |
764 | maybe_unlink (file) | |
765 | char *file; | |
766 | { | |
767 | if (!debug) | |
768 | unlink (file); | |
769 | else | |
770 | fprintf (stderr, "[Leaving %s]\n", file); | |
771 | } | |
772 | ||
773 | \f | |
774 | /* Add a name to a linked list. */ | |
775 | ||
776 | static void | |
777 | add_to_list (head_ptr, name) | |
778 | struct head *head_ptr; | |
779 | char *name; | |
780 | { | |
781 | struct id *newid = (struct id *) xcalloc (sizeof (*newid) + strlen (name), 1); | |
782 | static long sequence_number = 0; | |
783 | newid->sequence = ++sequence_number; | |
784 | strcpy (newid->name, name); | |
785 | ||
786 | if (head_ptr->first) | |
787 | head_ptr->last->next = newid; | |
788 | else | |
789 | head_ptr->first = newid; | |
790 | ||
791 | head_ptr->last = newid; | |
792 | head_ptr->number++; | |
793 | } | |
794 | ||
795 | /* Write: `prefix', the names on list LIST, `suffix'. */ | |
796 | ||
797 | static void | |
798 | write_list (stream, prefix, list) | |
799 | FILE *stream; | |
800 | char *prefix; | |
801 | struct id *list; | |
802 | { | |
803 | while (list) | |
804 | { | |
805 | fprintf (stream, "%sx%d,\n", prefix, list->sequence); | |
806 | list = list->next; | |
807 | } | |
808 | } | |
809 | ||
810 | static void | |
811 | write_list_with_asm (stream, prefix, list) | |
812 | FILE *stream; | |
813 | char *prefix; | |
814 | struct id *list; | |
815 | { | |
816 | while (list) | |
817 | { | |
818 | fprintf (stream, "%sx%d asm (\"%s\");\n", | |
819 | prefix, list->sequence, list->name); | |
820 | list = list->next; | |
821 | } | |
822 | } | |
823 | ||
824 | /* Write the constructor/destructor tables. */ | |
825 | ||
826 | static void | |
827 | write_c_file (stream, name) | |
828 | FILE *stream; | |
829 | char *name; | |
830 | { | |
831 | /* Write the tables as C code */ | |
832 | ||
833 | fprintf (stream, "typedef void entry_pt();\n\n"); | |
834 | ||
835 | write_list_with_asm (stream, "entry_pt ", constructors); | |
836 | ||
837 | fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n"); | |
838 | fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number); | |
839 | write_list (stream, "\t", constructors); | |
840 | fprintf (stream, "\t0\n};\n\n"); | |
841 | ||
842 | write_list_with_asm (stream, "entry_pt ", destructors); | |
843 | ||
844 | fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n"); | |
845 | fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number); | |
846 | write_list (stream, "\t", destructors); | |
847 | fprintf (stream, "\t0\n};\n\n"); | |
848 | ||
849 | fprintf (stream, "extern entry_pt __main;\n"); | |
850 | fprintf (stream, "entry_pt *__main_reference = __main;\n\n"); | |
851 | } | |
852 | ||
853 | \f | |
854 | #ifndef OBJECT_FORMAT_ROSE | |
855 | ||
856 | /* OSF/rose specific version to scan the name list of the loaded | |
857 | program for the symbols g++ uses for static constructors and | |
858 | destructors. | |
859 | ||
860 | The constructor table begins at __CTOR_LIST__ and contains a count | |
861 | of the number of pointers (or -1 if the constructors are built in a | |
862 | separate section by the linker), followed by the pointers to the | |
863 | constructor functions, terminated with a null pointer. The | |
864 | destructor table has the same format, and begins at __DTOR_LIST__. */ | |
865 | ||
866 | static void | |
867 | scan_prog_file (prog_name, which_pass) | |
868 | char *prog_name; | |
869 | enum pass which_pass; | |
870 | { | |
871 | void (*int_handler) PROTO((int)); | |
872 | void (*quit_handler) PROTO((int)); | |
873 | char *nm_argv[4]; | |
874 | int pid; | |
875 | int argc = 0; | |
876 | int pipe_fd[2]; | |
877 | char *p, buf[1024]; | |
878 | FILE *inf; | |
879 | ||
880 | if (which_pass != PASS_FIRST) | |
881 | return; | |
882 | ||
883 | nm_argv[ argc++ ] = "nm"; | |
884 | if (NM_FLAGS[0] != '\0') | |
885 | nm_argv[ argc++ ] = NM_FLAGS; | |
886 | ||
887 | nm_argv[ argc++ ] = prog_name; | |
888 | nm_argv[ argc++ ] = (char *)0; | |
889 | ||
890 | if (pipe (pipe_fd) < 0) | |
891 | fatal_perror ("pipe"); | |
892 | ||
893 | inf = fdopen (pipe_fd[0], "r"); | |
894 | if (inf == (FILE *)0) | |
895 | fatal_perror ("fdopen"); | |
896 | ||
897 | /* Trace if needed. */ | |
898 | if (vflag) | |
899 | { | |
900 | char **p_argv; | |
901 | char *str; | |
902 | ||
903 | fprintf (stderr, "%s", nm_file_name); | |
904 | for (p_argv = &nm_argv[1]; (str = *p_argv) != (char *)0; p_argv++) | |
905 | fprintf (stderr, " %s", str); | |
906 | ||
907 | fprintf (stderr, "\n"); | |
908 | } | |
909 | ||
910 | fflush (stdout); | |
911 | fflush (stderr); | |
912 | ||
913 | /* Spawn child nm on pipe */ | |
914 | pid = vfork (); | |
915 | if (pid == -1) | |
916 | fatal_perror ("vfork"); | |
917 | ||
918 | if (pid == 0) /* child context */ | |
919 | { | |
920 | /* setup stdout */ | |
921 | if (dup2 (pipe_fd[1], 1) < 0) | |
922 | fatal_perror ("Dup2 (%d, 1)", pipe_fd[1]); | |
923 | ||
924 | if (close (pipe_fd[0]) < 0) | |
925 | fatal_perror ("Close (%d)", pipe_fd[0]); | |
926 | ||
927 | if (close (pipe_fd[1]) < 0) | |
928 | fatal_perror ("Close (%d)", pipe_fd[1]); | |
929 | ||
930 | execv (nm_file_name, nm_argv); | |
931 | fatal_perror ("Execute %s", nm_file_name); | |
932 | } | |
933 | ||
934 | /* Parent context from here on. */ | |
935 | int_handler = (void (*)PROTO((int)))signal (SIGINT, SIG_IGN); | |
936 | quit_handler = (void (*)PROTO((int)))signal (SIGQUIT, SIG_IGN); | |
937 | ||
938 | if (close (pipe_fd[1]) < 0) | |
939 | fatal_perror ("Close (%d)", pipe_fd[1]); | |
940 | ||
941 | if (debug) | |
942 | fprintf (stderr, "\nnm output with constructors/destructors.\n"); | |
943 | ||
944 | /* Read each line of nm output. */ | |
945 | while (fgets (buf, sizeof buf, inf) != (char *)0) | |
946 | { | |
947 | int ch, ch2; | |
948 | char *start; | |
949 | char *end; | |
950 | ||
951 | /* If it contains a constructor or destructor name, add the name | |
952 | to the appropriate list. */ | |
953 | ||
954 | for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++) | |
955 | ; | |
956 | ||
957 | if (ch == '\0' || ch == '\n') | |
958 | continue; | |
959 | ||
960 | start = p; | |
961 | while ((ch = *p) == '_') /* skip any extra '_' inserted */ | |
962 | p++; | |
963 | ||
964 | for (end = p; (ch2 = *end) != '\0' && !isspace (ch2); end++) | |
965 | ; | |
966 | ||
967 | *end = '\0'; | |
968 | if (ch == 'G') | |
969 | { | |
970 | if (! strncmp (p, "GLOBAL_$I$", 10)) | |
971 | add_to_list (&constructors, p-1); | |
972 | ||
973 | else if (! strncmp (p, "GLOBAL_$D$", 10)) | |
974 | add_to_list (&destructors, p-1); | |
975 | ||
976 | else /* not a constructor or destructor */ | |
977 | continue; | |
978 | } | |
979 | ||
980 | else if (ch == 's' && (p - start) >= 2) | |
981 | { | |
982 | if (! strncmp (p, "sti__", 5)) | |
983 | add_to_list (&constructors, p-2); | |
984 | ||
985 | else if (! strncmp (p, "std__", 5)) | |
986 | add_to_list (&destructors, p-2); | |
987 | ||
988 | else /* not a constructor or destructor */ | |
989 | continue; | |
990 | } | |
991 | ||
992 | else | |
993 | continue; | |
994 | ||
995 | if (debug) | |
996 | fprintf (stderr, "\t%s\n", buf); | |
997 | } | |
998 | ||
999 | if (debug) | |
1000 | fprintf (stderr, "\n"); | |
1001 | ||
1002 | if (fclose (inf) != 0) | |
1003 | fatal_perror ("fclose of pipe"); | |
1004 | ||
1005 | do_wait (nm_file_name); | |
1006 | ||
1007 | signal (SIGINT, int_handler); | |
1008 | signal (SIGQUIT, quit_handler); | |
1009 | } | |
1010 | ||
1011 | #endif /* !OBJECT_FORMAT_ROSE */ | |
1012 | ||
1013 | \f | |
1014 | /* | |
1015 | * OSF/rose specific stuff. | |
1016 | */ | |
1017 | ||
1018 | #ifdef OBJECT_FORMAT_ROSE | |
1019 | ||
1020 | /* Union of the various load commands */ | |
1021 | ||
1022 | typedef union load_union | |
1023 | { | |
1024 | ldc_header_t hdr; /* common header */ | |
1025 | load_cmd_map_command_t map; /* map indexing other load cmds */ | |
1026 | interpreter_command_t iprtr; /* interpereter pathname */ | |
1027 | strings_command_t str; /* load commands strings section */ | |
1028 | region_command_t region; /* region load command */ | |
1029 | reloc_command_t reloc; /* relocation section */ | |
1030 | package_command_t pkg; /* package load command */ | |
1031 | symbols_command_t sym; /* symbol sections */ | |
1032 | entry_command_t ent; /* program start section */ | |
1033 | gen_info_command_t info; /* object information */ | |
1034 | func_table_command_t func; /* function constructors/destructors */ | |
1035 | } load_union_t; | |
1036 | ||
1037 | /* Structure to point to load command and data section in memory. */ | |
1038 | ||
1039 | typedef struct load_all | |
1040 | { | |
1041 | load_union_t *load; /* load command */ | |
1042 | char *section; /* pointer to section */ | |
1043 | } load_all_t; | |
1044 | ||
1045 | /* Structure to contain information about a file mapped into memory. */ | |
1046 | ||
1047 | struct file_info | |
1048 | { | |
1049 | char *start; /* start of map */ | |
1050 | char *name; /* filename */ | |
1051 | long size; /* size of the file */ | |
1052 | long rounded_size; /* size rounded to page boundary */ | |
1053 | int fd; /* file descriptor */ | |
1054 | int rw; /* != 0 if opened read/write */ | |
1055 | int use_mmap; /* != 0 if mmap'ed */ | |
1056 | }; | |
1057 | ||
1058 | extern int decode_mach_o_hdr PROTO(( void *in_bufp, | |
1059 | size_t in_bufsize, | |
1060 | unsigned long hdr_version, | |
1061 | mo_header_t *headerp )); | |
1062 | ||
1063 | extern int encode_mach_o_hdr PROTO(( mo_header_t *headerp, | |
1064 | void *out_bufp, | |
1065 | size_t out_bufsize )); | |
1066 | ||
1067 | static void bad_header PROTO(( int status )); | |
1068 | ||
1069 | static void print_header PROTO(( mo_header_t *hdr_ptr )); | |
1070 | ||
1071 | static void print_load_command PROTO(( load_union_t *load_hdr, | |
1072 | size_t offset, | |
1073 | int number )); | |
1074 | ||
1075 | static void add_func_table PROTO(( mo_header_t *hdr_p, | |
1076 | load_all_t *load_array, | |
1077 | symbol_info_t *sym, | |
1078 | int type )); | |
1079 | ||
1080 | static struct file_info *read_file PROTO(( char *, int, int )); | |
1081 | ||
1082 | static void end_file PROTO(( struct file_info * )); | |
1083 | ||
1084 | \f | |
1085 | /* OSF/rose specific version to scan the name list of the loaded | |
1086 | program for the symbols g++ uses for static constructors and | |
1087 | destructors. | |
1088 | ||
1089 | The constructor table begins at __CTOR_LIST__ and contains a count | |
1090 | of the number of pointers (or -1 if the constructors are built in a | |
1091 | separate section by the linker), followed by the pointers to the | |
1092 | constructor functions, terminated with a null pointer. The | |
1093 | destructor table has the same format, and begins at __DTOR_LIST__. */ | |
1094 | ||
1095 | static void | |
1096 | scan_prog_file (prog_name, which_pass) | |
1097 | char *prog_name; | |
1098 | enum pass which_pass; | |
1099 | { | |
1100 | char *obj; | |
1101 | mo_header_t hdr; | |
1102 | load_all_t *load_array; | |
1103 | load_all_t *load_end; | |
1104 | load_all_t *load_cmd; | |
1105 | int symbol_load_cmds; | |
1106 | off_t offset; | |
1107 | int i; | |
1108 | int num_syms; | |
1109 | int status; | |
1110 | char *str_sect; | |
1111 | struct file_info *obj_file; | |
1112 | int prog_fd; | |
1113 | mo_lcid_t cmd_strings = -1; | |
1114 | symbol_info_t *main_sym = 0; | |
1115 | int rw = (which_pass != PASS_FIRST); | |
1116 | ||
1117 | prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY); | |
1118 | if (prog_fd < 0) | |
1119 | fatal_perror ("Can't read %s", prog_name); | |
1120 | ||
1121 | obj_file = read_file (prog_name, prog_fd, rw); | |
1122 | obj = obj_file->start; | |
1123 | ||
1124 | status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr); | |
1125 | if (status != MO_HDR_CONV_SUCCESS) | |
1126 | bad_header (status); | |
1127 | ||
1128 | ||
1129 | /* Do some basic sanity checks. Note we explicitly use the big endian magic number, | |
1130 | since the hardware will automatically swap bytes for us on loading little endian | |
1131 | integers. */ | |
1132 | ||
1133 | #ifndef CROSS_COMPILE | |
1134 | if (hdr.moh_magic != MOH_MAGIC_MSB | |
1135 | || hdr.moh_header_version != MOH_HEADER_VERSION | |
1136 | || hdr.moh_byte_order != OUR_BYTE_ORDER | |
1137 | || hdr.moh_data_rep_id != OUR_DATA_REP_ID | |
1138 | || hdr.moh_cpu_type != OUR_CPU_TYPE | |
1139 | || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE | |
1140 | || hdr.moh_vendor_type != OUR_VENDOR_TYPE) | |
1141 | { | |
1142 | fatal ("incompatibilities exist between object file & expected values."); | |
1143 | } | |
1144 | #endif | |
1145 | ||
1146 | if (debug) | |
1147 | print_header (&hdr); | |
1148 | ||
1149 | offset = hdr.moh_first_cmd_off; | |
1150 | load_end = load_array | |
1151 | = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2); | |
1152 | ||
1153 | /* Build array of load commands, calculating the offsets */ | |
1154 | for (i = 0; i < hdr.moh_n_load_cmds; i++) | |
1155 | { | |
1156 | load_union_t *load_hdr; /* load command header */ | |
1157 | ||
1158 | load_cmd = load_end++; | |
1159 | load_hdr = (load_union_t *) (obj + offset); | |
1160 | ||
1161 | /* If modifing the program file, copy the header. */ | |
1162 | if (rw) | |
1163 | { | |
1164 | load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size); | |
1165 | memcpy (ptr, load_hdr, load_hdr->hdr.ldci_cmd_size); | |
1166 | load_hdr = ptr; | |
1167 | ||
1168 | /* null out old command map, because we will rewrite at the end. */ | |
1169 | if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP) | |
1170 | { | |
1171 | cmd_strings = ptr->map.lcm_ld_cmd_strings; | |
1172 | ptr->hdr.ldci_cmd_type = LDC_UNDEFINED; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | load_cmd->load = load_hdr; | |
1177 | if (load_hdr->hdr.ldci_section_off > 0) | |
1178 | load_cmd->section = obj + load_hdr->hdr.ldci_section_off; | |
1179 | ||
1180 | if (debug) | |
1181 | print_load_command (load_hdr, offset, i); | |
1182 | ||
1183 | offset += load_hdr->hdr.ldci_cmd_size; | |
1184 | } | |
1185 | ||
1186 | /* If the last command is the load command map and is not undefined, | |
1187 | decrement the count of load commands. */ | |
1188 | if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED) | |
1189 | { | |
1190 | load_end--; | |
1191 | hdr.moh_n_load_cmds--; | |
1192 | } | |
1193 | ||
1194 | /* Go through and process each symbol table section. */ | |
1195 | symbol_load_cmds = 0; | |
1196 | for (load_cmd = load_array; load_cmd < load_end; load_cmd++) | |
1197 | { | |
1198 | load_union_t *load_hdr = load_cmd->load; | |
1199 | ||
1200 | if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS) | |
1201 | { | |
1202 | symbol_load_cmds++; | |
1203 | ||
1204 | if (debug) | |
1205 | { | |
1206 | char *kind = "uknown"; | |
1207 | ||
1208 | switch (load_hdr->sym.symc_kind) | |
1209 | { | |
1210 | case SYMC_IMPORTS: kind = "imports"; break; | |
1211 | case SYMC_DEFINED_SYMBOLS: kind = "defined"; break; | |
1212 | case SYMC_STABS: kind = "stabs"; break; | |
1213 | } | |
1214 | ||
1215 | fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n", | |
1216 | symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind); | |
1217 | } | |
1218 | ||
1219 | if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS) | |
1220 | continue; | |
1221 | ||
1222 | str_sect = load_array[ load_hdr->sym.symc_strings_section ].section; | |
1223 | if (str_sect == (char *)0) | |
1224 | fatal ("string section missing"); | |
1225 | ||
1226 | if (load_cmd->section == (char *)0) | |
1227 | fatal ("section pointer missing"); | |
1228 | ||
1229 | num_syms = load_hdr->sym.symc_nentries; | |
1230 | for (i = 0; i < num_syms; i++) | |
1231 | { | |
1232 | symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i; | |
1233 | char *name = sym->si_name.symbol_name + str_sect; | |
1234 | char *name_start = name; | |
1235 | ||
1236 | if (name[0] != '_') | |
1237 | continue; | |
1238 | ||
1239 | while (*++name == '_') /* skip any extra '_' inserted */ | |
1240 | ; | |
1241 | ||
1242 | if (rw) | |
1243 | { | |
1244 | if (*name != 'm' || (name - name_start) < 2 | |
1245 | || strcmp (name, "main")) | |
1246 | continue; | |
1247 | ||
1248 | main_sym = sym; | |
1249 | } | |
1250 | ||
1251 | else if (*name == 'G') | |
1252 | { | |
1253 | if (! strncmp (name, "GLOBAL_$I$", 10)) | |
1254 | add_to_list (&constructors, name_start); | |
1255 | ||
1256 | else if (! strncmp (name, "GLOBAL_$D$", 10)) | |
1257 | add_to_list (&destructors, name_start); | |
1258 | ||
1259 | else /* not a constructor or destructor */ | |
1260 | continue; | |
1261 | } | |
1262 | ||
1263 | else if (*name == 's' && (name - name_start) > 2) | |
1264 | { | |
1265 | if (! strncmp (name, "sti__", 5)) | |
1266 | add_to_list (&constructors, name_start); | |
1267 | ||
1268 | else if (! strncmp (name, "std__", 5)) | |
1269 | add_to_list (&destructors, name_start); | |
1270 | ||
1271 | else /* not a constructor or destructor */ | |
1272 | continue; | |
1273 | } | |
1274 | ||
1275 | else | |
1276 | continue; | |
1277 | ||
1278 | if (debug) | |
1279 | fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n", | |
1280 | sym->si_type, sym->si_sc_type, sym->si_flags, name); | |
1281 | } | |
1282 | } | |
1283 | } | |
1284 | ||
1285 | if (symbol_load_cmds == 0) | |
1286 | fatal ("no symbol table found."); | |
1287 | ||
1288 | /* Update the program file now, rewrite header and load commands. At present, | |
1289 | we assume that there is enough space after the last load command to insert | |
1290 | one more. Since the first section written out is page aligned, and the | |
1291 | number of load commands is small, this is ok for the present. */ | |
1292 | ||
1293 | if (rw) | |
1294 | { | |
1295 | load_union_t *load_map; | |
1296 | size_t size; | |
1297 | ||
1298 | if (cmd_strings == -1) | |
1299 | fatal ("no cmd_strings found."); | |
1300 | ||
1301 | /* Add __main to initializer list. */ | |
1302 | if (main_sym != (symbol_info_t *)0) | |
1303 | add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION); | |
1304 | ||
1305 | if (debug) | |
1306 | fprintf (stderr, "\nUpdating header and load commands.\n\n"); | |
1307 | ||
1308 | hdr.moh_n_load_cmds++; | |
1309 | size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1)); | |
1310 | ||
1311 | /* Create new load command map. */ | |
1312 | if (debug) | |
1313 | fprintf (stderr, "load command map, %d cmds, new size %ld.\n", | |
1314 | (int)hdr.moh_n_load_cmds, (long)size); | |
1315 | ||
1316 | load_map = (load_union_t *) xcalloc (1, size); | |
1317 | load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP; | |
1318 | load_map->map.ldc_header.ldci_cmd_size = size; | |
1319 | load_map->map.lcm_ld_cmd_strings = cmd_strings; | |
1320 | load_map->map.lcm_nentries = hdr.moh_n_load_cmds; | |
1321 | load_array[hdr.moh_n_load_cmds-1].load = load_map; | |
1322 | ||
1323 | offset = hdr.moh_first_cmd_off; | |
1324 | for (i = 0; i < hdr.moh_n_load_cmds; i++) | |
1325 | { | |
1326 | load_map->map.lcm_map[i] = offset; | |
1327 | if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP) | |
1328 | hdr.moh_load_map_cmd_off = offset; | |
1329 | ||
1330 | offset += load_array[i].load->hdr.ldci_cmd_size; | |
1331 | } | |
1332 | ||
1333 | hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR; | |
1334 | ||
1335 | if (debug) | |
1336 | print_header (&hdr); | |
1337 | ||
1338 | /* Write header */ | |
1339 | status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR); | |
1340 | if (status != MO_HDR_CONV_SUCCESS) | |
1341 | bad_header (status); | |
1342 | ||
1343 | if (debug) | |
1344 | fprintf (stderr, "writing load commands.\n\n"); | |
1345 | ||
1346 | /* Write load commands */ | |
1347 | offset = hdr.moh_first_cmd_off; | |
1348 | for (i = 0; i < hdr.moh_n_load_cmds; i++) | |
1349 | { | |
1350 | load_union_t *load_hdr = load_array[i].load; | |
1351 | size_t size = load_hdr->hdr.ldci_cmd_size; | |
1352 | ||
1353 | if (debug) | |
1354 | print_load_command (load_hdr, offset, i); | |
1355 | ||
1356 | memcpy (obj + offset, load_hdr, size); | |
1357 | offset += size; | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | end_file (obj_file); | |
1362 | ||
1363 | if (close (prog_fd)) | |
1364 | fatal_perror ("Can't close %s", prog_name); | |
1365 | ||
1366 | if (debug) | |
1367 | fprintf (stderr, "\n"); | |
1368 | } | |
1369 | ||
1370 | \f | |
1371 | /* Add a function table to the load commands to call a function | |
1372 | on initition or termination of the process. */ | |
1373 | ||
1374 | static void | |
1375 | add_func_table (hdr_p, load_array, sym, type) | |
1376 | mo_header_t *hdr_p; /* pointer to global header */ | |
1377 | load_all_t *load_array; /* array of ptrs to load cmds */ | |
1378 | symbol_info_t *sym; /* pointer to symbol entry */ | |
1379 | int type; /* fntc_type value */ | |
1380 | { | |
1381 | /* Add a new load command. */ | |
1382 | int num_cmds = ++hdr_p->moh_n_load_cmds; | |
1383 | int load_index = num_cmds - 1; | |
1384 | size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t); | |
1385 | load_union_t *ptr = xcalloc (1, size); | |
1386 | load_all_t *load_cmd; | |
1387 | int i; | |
1388 | ||
1389 | /* Set the unresolved address bit in the header to force the loader to be | |
1390 | used, since kernel exec does not call the initialization functions. */ | |
1391 | hdr_p->moh_flags |= MOH_UNRESOLVED_F; | |
1392 | ||
1393 | load_cmd = &load_array[load_index]; | |
1394 | load_cmd->load = ptr; | |
1395 | load_cmd->section = (char *)0; | |
1396 | ||
1397 | /* Fill in func table load command. */ | |
1398 | ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE; | |
1399 | ptr->func.ldc_header.ldci_cmd_size = size; | |
1400 | ptr->func.ldc_header.ldci_section_off = 0; | |
1401 | ptr->func.ldc_header.ldci_section_len = 0; | |
1402 | ptr->func.fntc_type = type; | |
1403 | ptr->func.fntc_nentries = 1; | |
1404 | ||
1405 | /* copy address, turn it from abs. address to (region,offset) if necessary. */ | |
1406 | /* Is the symbol already expressed as (region, offset)? */ | |
1407 | if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0) | |
1408 | { | |
1409 | ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid; | |
1410 | ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff; | |
1411 | } | |
1412 | ||
1413 | /* If not, figure out which region it's in. */ | |
1414 | else | |
1415 | { | |
1416 | mo_vm_addr_t addr = sym->si_value.abs_val; | |
1417 | int found = 0; | |
1418 | ||
1419 | for (i = 0; i < load_index; i++) | |
1420 | { | |
1421 | if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION) | |
1422 | { | |
1423 | region_command_t *region_ptr = &load_array[i].load->region; | |
1424 | ||
1425 | if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0 | |
1426 | && addr >= region_ptr->regc_addr.vm_addr | |
1427 | && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size) | |
1428 | { | |
1429 | ptr->func.fntc_entry_loc[0].adr_lcid = i; | |
1430 | ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr; | |
1431 | found++; | |
1432 | break; | |
1433 | } | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | if (!found) | |
1438 | fatal ("could not convert 0x%l.8x into a region", addr); | |
1439 | } | |
1440 | ||
1441 | if (debug) | |
1442 | fprintf (stderr, | |
1443 | "%s function, region %d, offset = %ld (0x%.8lx)\n", | |
1444 | (type == FNTC_INITIALIZATION) ? "init" : "term", | |
1445 | (int)ptr->func.fntc_entry_loc[i].adr_lcid, | |
1446 | (long)ptr->func.fntc_entry_loc[i].adr_sctoff, | |
1447 | (long)ptr->func.fntc_entry_loc[i].adr_sctoff); | |
1448 | ||
1449 | } | |
1450 | ||
1451 | \f | |
1452 | /* Print the global header for an OSF/rose object. */ | |
1453 | ||
1454 | static void | |
1455 | print_header (hdr_ptr) | |
1456 | mo_header_t *hdr_ptr; | |
1457 | { | |
1458 | fprintf (stderr, "\nglobal header:\n"); | |
1459 | fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic); | |
1460 | fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version); | |
1461 | fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version); | |
1462 | fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version); | |
1463 | fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size); | |
1464 | fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order); | |
1465 | fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id); | |
1466 | fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type); | |
1467 | fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype); | |
1468 | fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type); | |
1469 | fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off); | |
1470 | fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off); | |
1471 | fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds); | |
1472 | fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds); | |
1473 | fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags); | |
1474 | ||
1475 | if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F) | |
1476 | fprintf (stderr, ", relocatable"); | |
1477 | ||
1478 | if (hdr_ptr->moh_flags & MOH_LINKABLE_F) | |
1479 | fprintf (stderr, ", linkable"); | |
1480 | ||
1481 | if (hdr_ptr->moh_flags & MOH_EXECABLE_F) | |
1482 | fprintf (stderr, ", execable"); | |
1483 | ||
1484 | if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F) | |
1485 | fprintf (stderr, ", executable"); | |
1486 | ||
1487 | if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F) | |
1488 | fprintf (stderr, ", unresolved"); | |
1489 | ||
1490 | fprintf (stderr, "\n\n"); | |
1491 | return; | |
1492 | } | |
1493 | ||
1494 | \f | |
1495 | /* Print a short summary of a load command. */ | |
1496 | ||
1497 | static void | |
1498 | print_load_command (load_hdr, offset, number) | |
1499 | load_union_t *load_hdr; | |
1500 | size_t offset; | |
1501 | int number; | |
1502 | { | |
1503 | mo_long_t type = load_hdr->hdr.ldci_cmd_type; | |
1504 | char *type_str = (char *)0; | |
1505 | ||
1506 | switch (type) | |
1507 | { | |
1508 | case LDC_UNDEFINED: type_str = "UNDEFINED"; break; | |
1509 | case LDC_CMD_MAP: type_str = "CMD_MAP"; break; | |
1510 | case LDC_INTERPRETER: type_str = "INTERPRETER"; break; | |
1511 | case LDC_STRINGS: type_str = "STRINGS"; break; | |
1512 | case LDC_REGION: type_str = "REGION"; break; | |
1513 | case LDC_RELOC: type_str = "RELOC"; break; | |
1514 | case LDC_PACKAGE: type_str = "PACKAGE"; break; | |
1515 | case LDC_SYMBOLS: type_str = "SYMBOLS"; break; | |
1516 | case LDC_ENTRY: type_str = "ENTRY"; break; | |
1517 | case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break; | |
1518 | case LDC_GEN_INFO: type_str = "GEN_INFO"; break; | |
1519 | } | |
1520 | ||
1521 | fprintf (stderr, | |
1522 | "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx", | |
1523 | number, | |
1524 | (long) load_hdr->hdr.ldci_cmd_size, | |
1525 | (long) offset, | |
1526 | (long) load_hdr->hdr.ldci_section_off, | |
1527 | (long) load_hdr->hdr.ldci_section_len); | |
1528 | ||
1529 | if (type_str == (char *)0) | |
1530 | fprintf (stderr, ", ty: unknown (%ld)\n", (long) type); | |
1531 | ||
1532 | else if (type != LDC_REGION) | |
1533 | fprintf (stderr, ", ty: %s\n", type_str); | |
1534 | ||
1535 | else | |
1536 | { | |
1537 | char *region = ""; | |
1538 | switch (load_hdr->region.regc_usage_type) | |
1539 | { | |
1540 | case REG_TEXT_T: region = ", .text"; break; | |
1541 | case REG_DATA_T: region = ", .data"; break; | |
1542 | case REG_BSS_T: region = ", .bss"; break; | |
1543 | case REG_GLUE_T: region = ", .glue"; break; | |
1544 | #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/ | |
1545 | case REG_RDATA_T: region = ", .rdata"; break; | |
1546 | case REG_SDATA_T: region = ", .sdata"; break; | |
1547 | case REG_SBSS_T: region = ", .sbss"; break; | |
1548 | #endif | |
1549 | } | |
1550 | ||
1551 | fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n", | |
1552 | type_str, | |
1553 | (long) load_hdr->region.regc_vm_addr, | |
1554 | (long) load_hdr->region.regc_vm_size, | |
1555 | region); | |
1556 | } | |
1557 | ||
1558 | return; | |
1559 | } | |
1560 | ||
1561 | \f | |
1562 | /* Fatal error when {en,de}code_mach_o_header fails. */ | |
1563 | ||
1564 | static void | |
1565 | bad_header (status) | |
1566 | int status; | |
1567 | { | |
1568 | char *msg = (char *)0; | |
1569 | ||
1570 | switch (status) | |
1571 | { | |
1572 | case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break; | |
1573 | case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break; | |
1574 | case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break; | |
1575 | case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break; | |
1576 | case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break; | |
1577 | case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break; | |
1578 | } | |
1579 | ||
1580 | if (msg == (char *)0) | |
1581 | fatal ("unknown {de,en}code_mach_o_hdr return value %d", status); | |
1582 | else | |
1583 | fatal ("%s", msg); | |
1584 | } | |
1585 | ||
1586 | \f | |
1587 | /* Read a file into a memory buffer. */ | |
1588 | ||
1589 | static struct file_info * | |
1590 | read_file (name, fd, rw) | |
1591 | char *name; /* filename */ | |
1592 | int fd; /* file descriptor */ | |
1593 | int rw; /* read/write */ | |
1594 | { | |
1595 | struct stat stat_pkt; | |
1596 | struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1); | |
1597 | #ifdef USE_MMAP | |
1598 | static int page_size; | |
1599 | #endif | |
1600 | ||
1601 | if (fstat (fd, &stat_pkt) < 0) | |
1602 | fatal_perror ("fstat %s", name); | |
1603 | ||
1604 | p->name = name; | |
1605 | p->size = stat_pkt.st_size; | |
1606 | p->rounded_size = stat_pkt.st_size; | |
1607 | p->fd = fd; | |
1608 | p->rw = rw; | |
1609 | ||
1610 | #ifdef USE_MMAP | |
1611 | if (debug) | |
1612 | fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only"); | |
1613 | ||
1614 | if (page_size == 0) | |
1615 | page_size = sysconf (_SC_PAGE_SIZE); | |
1616 | ||
1617 | p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size; | |
1618 | p->start = mmap ((caddr_t)0, | |
1619 | (rw) ? p->rounded_size : p->size, | |
1620 | (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ, | |
1621 | MAP_FILE | MAP_VARIABLE | MAP_SHARED, | |
1622 | fd, | |
1623 | 0L); | |
1624 | ||
1625 | if (p->start != (char *)0 && p->start != (char *)-1) | |
1626 | p->use_mmap = 1; | |
1627 | ||
1628 | else | |
1629 | #endif /* USE_MMAP */ | |
1630 | { | |
1631 | long len; | |
1632 | ||
1633 | if (debug) | |
1634 | fprintf (stderr, "read %s\n", name); | |
1635 | ||
1636 | p->use_mmap = 0; | |
1637 | p->start = xmalloc (p->size); | |
1638 | if (lseek (fd, 0L, SEEK_SET) < 0) | |
1639 | fatal_perror ("lseek to 0 on %s", name); | |
1640 | ||
1641 | len = read (fd, p->start, p->size); | |
1642 | if (len < 0) | |
1643 | fatal_perror ("read %s", name); | |
1644 | ||
1645 | if (len != p->size) | |
1646 | fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name); | |
1647 | } | |
1648 | ||
1649 | return p; | |
1650 | } | |
1651 | ||
1652 | \f | |
1653 | /* Do anything necessary to write a file back from memory. */ | |
1654 | ||
1655 | static void | |
1656 | end_file (ptr) | |
1657 | struct file_info *ptr; /* file information block */ | |
1658 | { | |
1659 | #ifdef USE_MMAP | |
1660 | if (ptr->use_mmap) | |
1661 | { | |
1662 | if (ptr->rw) | |
1663 | { | |
1664 | if (debug) | |
1665 | fprintf (stderr, "msync %s\n", ptr->name); | |
1666 | ||
1667 | if (msync (ptr->start, ptr->rounded_size, MS_ASYNC)) | |
1668 | fatal_perror ("msync %s", ptr->name); | |
1669 | } | |
1670 | ||
1671 | if (debug) | |
1672 | fprintf (stderr, "munmap %s\n", ptr->name); | |
1673 | ||
1674 | if (munmap (ptr->start, ptr->size)) | |
1675 | fatal_perror ("munmap %s", ptr->name); | |
1676 | } | |
1677 | else | |
1678 | #endif /* USE_MMAP */ | |
1679 | { | |
1680 | if (ptr->rw) | |
1681 | { | |
1682 | long len; | |
1683 | ||
1684 | if (debug) | |
1685 | fprintf (stderr, "write %s\n", ptr->name); | |
1686 | ||
1687 | if (lseek (ptr->fd, 0L, SEEK_SET) < 0) | |
1688 | fatal_perror ("lseek to 0 on %s", ptr->name); | |
1689 | ||
1690 | len = write (ptr->fd, ptr->start, ptr->size); | |
1691 | if (len < 0) | |
1692 | fatal_perror ("read %s", ptr->name); | |
1693 | ||
1694 | if (len != ptr->size) | |
1695 | fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name); | |
1696 | } | |
1697 | ||
1698 | free ((generic *)ptr->start); | |
1699 | } | |
1700 | ||
1701 | free ((generic *)ptr); | |
1702 | } | |
1703 | ||
1704 | #endif /* OBJECT_FORMAT_ROSE */ |