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Commit | Line | Data |
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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 | ||
4b19dee8 | 5 | Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc. |
4e81a331 RS |
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> | |
4e81a331 | 31 | #include <ctype.h> |
4e81a331 RS |
32 | #include <errno.h> |
33 | #include <signal.h> | |
34 | #include <sys/file.h> | |
35 | #include <sys/stat.h> | |
e6701a47 | 36 | #ifdef NO_WAIT_H |
4e81a331 | 37 | #include <sys/wait.h> |
e6701a47 | 38 | #endif |
4e81a331 | 39 | |
ed5b9462 RS |
40 | #ifndef errno |
41 | extern int errno; | |
42 | #endif | |
43 | ||
842a1144 | 44 | #if defined(bsd4_4) || defined(__NetBSD__) |
5d672cd7 JW |
45 | extern const char *const sys_errlist[]; |
46 | #else | |
47 | extern char *sys_errlist[]; | |
48 | #endif | |
49 | extern int sys_nerr; | |
50 | ||
4e81a331 RS |
51 | #define COLLECT |
52 | ||
53 | #include "config.h" | |
54 | ||
55 | #ifndef __STDC__ | |
4e81a331 | 56 | #define generic char |
4e81a331 RS |
57 | #define const |
58 | ||
59 | #else | |
4e81a331 | 60 | #define generic void |
4e81a331 RS |
61 | #endif |
62 | ||
ed5b9462 RS |
63 | #ifdef USG |
64 | #define vfork fork | |
65 | #endif | |
66 | ||
4d1a011f RK |
67 | /* Add prototype support. */ |
68 | #ifndef PROTO | |
69 | #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__) | |
70 | #define PROTO(ARGS) ARGS | |
71 | #else | |
72 | #define PROTO(ARGS) () | |
73 | #endif | |
74 | #endif | |
75 | ||
ed5b9462 RS |
76 | #ifndef R_OK |
77 | #define R_OK 4 | |
78 | #define W_OK 2 | |
79 | #define X_OK 1 | |
80 | #endif | |
81 | ||
82 | /* On MSDOS, write temp files in current dir | |
83 | because there's no place else we can expect to use. */ | |
4b19dee8 | 84 | #ifdef __MSDOS__ |
ed5b9462 RS |
85 | #ifndef P_tmpdir |
86 | #define P_tmpdir "./" | |
87 | #endif | |
88 | #endif | |
89 | \f | |
90 | /* On certain systems, we have code that works by scanning the object file | |
91 | directly. But this code uses system-specific header files and library | |
bb59f9a6 RS |
92 | functions, so turn it off in a cross-compiler. Likewise, the names of |
93 | the utilities aren't correct for a cross-compiler; we have to hope that | |
94 | cross-versions are in the proper directories. */ | |
ed5b9462 RS |
95 | |
96 | #ifdef CROSS_COMPILE | |
97 | #undef OBJECT_FORMAT_COFF | |
98 | #undef OBJECT_FORMAT_ROSE | |
bb59f9a6 RS |
99 | #undef MD_EXEC_PREFIX |
100 | #undef REAL_LD_FILE_NAME | |
101 | #undef REAL_NM_FILE_NAME | |
102 | #undef REAL_STRIP_FILE_NAME | |
ed5b9462 RS |
103 | #endif |
104 | ||
105 | /* If we can't use a special method, use the ordinary one: | |
106 | run nm to find what symbols are present. | |
107 | In a cross-compiler, this means you need a cross nm, | |
108 | but that isn't quite as unpleasant as special headers. */ | |
109 | ||
110 | #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE) | |
111 | #define OBJECT_FORMAT_NONE | |
112 | #endif | |
113 | ||
114 | #ifdef OBJECT_FORMAT_COFF | |
115 | ||
116 | #include <a.out.h> | |
117 | #include <ar.h> | |
118 | ||
119 | #ifdef UMAX | |
120 | #include <sgs.h> | |
121 | #endif | |
122 | ||
033ba47c RS |
123 | /* Many versions of ldfcn.h define these. */ |
124 | #ifdef FREAD | |
ed5b9462 RS |
125 | #undef FREAD |
126 | #undef FWRITE | |
127 | #endif | |
128 | ||
129 | #include <ldfcn.h> | |
130 | ||
7243ba7d RK |
131 | /* Some systems have an ISCOFF macro, but others do not. In some cases |
132 | the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines | |
133 | that either do not have an ISCOFF macro in /usr/include or for those | |
134 | where it is wrong. */ | |
135 | ||
e99467d2 RS |
136 | #ifndef MY_ISCOFF |
137 | #define MY_ISCOFF(X) ISCOFF (X) | |
138 | #endif | |
139 | ||
ed5b9462 RS |
140 | #endif /* OBJECT_FORMAT_COFF */ |
141 | ||
4e81a331 RS |
142 | #ifdef OBJECT_FORMAT_ROSE |
143 | ||
144 | #ifdef _OSF_SOURCE | |
145 | #define USE_MMAP | |
146 | #endif | |
147 | ||
148 | #ifdef USE_MMAP | |
149 | #include <sys/mman.h> | |
150 | #endif | |
151 | ||
152 | #include <unistd.h> | |
153 | #include <mach_o_format.h> | |
154 | #include <mach_o_header.h> | |
155 | #include <mach_o_vals.h> | |
156 | #include <mach_o_types.h> | |
ed5b9462 | 157 | |
4e81a331 RS |
158 | #endif /* OBJECT_FORMAT_ROSE */ |
159 | ||
ed5b9462 RS |
160 | #ifdef OBJECT_FORMAT_NONE |
161 | ||
4e81a331 RS |
162 | /* Default flags to pass to nm. */ |
163 | #ifndef NM_FLAGS | |
164 | #define NM_FLAGS "-p" | |
165 | #endif | |
166 | ||
ed5b9462 | 167 | #endif /* OBJECT_FORMAT_NONE */ |
d6cf3187 RS |
168 | |
169 | /* Some systems use __main in a way incompatible with its use in gcc, in these | |
170 | cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to | |
171 | give the same symbol without quotes for an alternative entry point. You | |
172 | must define both, or niether. */ | |
173 | #ifndef NAME__MAIN | |
174 | #define NAME__MAIN "__main" | |
175 | #define SYMBOL__MAIN __main | |
176 | #endif | |
177 | ||
4e81a331 RS |
178 | \f |
179 | /* Linked lists of constructor and destructor names. */ | |
180 | ||
181 | struct id | |
182 | { | |
183 | struct id *next; | |
184 | int sequence; | |
185 | char name[1]; | |
186 | }; | |
187 | ||
188 | struct head | |
189 | { | |
190 | struct id *first; | |
191 | struct id *last; | |
192 | int number; | |
193 | }; | |
194 | ||
195 | /* Enumeration giving which pass this is for scanning the program file. */ | |
196 | ||
197 | enum pass { | |
198 | PASS_FIRST, /* without constructors */ | |
199 | PASS_SECOND /* with constructors linked in */ | |
200 | }; | |
201 | ||
ed5b9462 | 202 | #ifndef NO_SYS_SIGLIST |
1b7ca660 | 203 | #ifndef DONT_DECLARE_SYS_SIGLIST |
4e81a331 | 204 | extern char *sys_siglist[]; |
ed5b9462 | 205 | #endif |
1b7ca660 | 206 | #endif |
4e81a331 RS |
207 | extern char *version_string; |
208 | ||
209 | static int vflag; /* true if -v */ | |
210 | static int rflag; /* true if -r */ | |
a87104d9 | 211 | static int strip_flag; /* true if -s */ |
4e81a331 RS |
212 | |
213 | static int debug; /* true if -debug */ | |
214 | ||
215 | static int temp_filename_length; /* Length of temp_filename */ | |
216 | static char *temp_filename; /* Base of temp filenames */ | |
217 | static char *c_file; /* <xxx>.c for constructor/destructor list. */ | |
218 | static char *o_file; /* <xxx>.o for constructor/destructor list. */ | |
0cdd3ddd | 219 | static char *output_file; /* Output file for ld. */ |
4e81a331 | 220 | static char *nm_file_name; /* pathname of nm */ |
a87104d9 | 221 | static char *strip_file_name; /* pathname of strip */ |
4e81a331 RS |
222 | |
223 | static struct head constructors; /* list of constructors found */ | |
224 | static struct head destructors; /* list of destructors found */ | |
225 | ||
ed5b9462 RS |
226 | extern char *getenv (); |
227 | extern char *mktemp (); | |
4d1a011f RK |
228 | extern FILE *fdopen (); |
229 | ||
230 | /* Structure to hold all the directories in which to search for files to | |
231 | execute. */ | |
232 | ||
233 | struct prefix_list | |
234 | { | |
235 | char *prefix; /* String to prepend to the path. */ | |
236 | struct prefix_list *next; /* Next in linked list. */ | |
237 | }; | |
238 | ||
239 | struct path_prefix | |
240 | { | |
241 | struct prefix_list *plist; /* List of prefixes to try */ | |
242 | int max_len; /* Max length of a prefix in PLIST */ | |
243 | char *name; /* Name of this list (used in config stuff) */ | |
244 | }; | |
245 | ||
246 | static void my_exit PROTO((int)); | |
247 | static void handler PROTO((int)); | |
248 | static int is_ctor_dtor PROTO((char *)); | |
249 | static void choose_temp_base PROTO((void)); | |
250 | static int is_in_prefix_list PROTO((struct path_prefix *, char *, int)); | |
251 | static char *find_a_file PROTO((struct path_prefix *, char *)); | |
252 | static void add_prefix PROTO((struct path_prefix *, char *)); | |
253 | static void prefix_from_env PROTO((char *, struct path_prefix *)); | |
254 | static void do_wait PROTO((char *)); | |
255 | static void fork_execute PROTO((char *, char **)); | |
256 | static void maybe_unlink PROTO((char *)); | |
257 | static void add_to_list PROTO((struct head *, char *)); | |
258 | static void write_list PROTO((FILE *, char *, struct id *)); | |
259 | static void write_list_with_asm PROTO((FILE *, char *, struct id *)); | |
260 | static void write_c_file PROTO((FILE *, char *)); | |
261 | static void scan_prog_file PROTO((char *, enum pass)); | |
ed5b9462 RS |
262 | |
263 | generic *xcalloc (); | |
264 | generic *xmalloc (); | |
3f7cc57a MS |
265 | |
266 | extern char *index (); | |
267 | extern char *rindex (); | |
4e81a331 | 268 | \f |
f28e8a68 | 269 | #ifdef NO_DUP2 |
4d1a011f | 270 | int |
f28e8a68 RS |
271 | dup2 (oldfd, newfd) |
272 | int oldfd; | |
273 | int newfd; | |
274 | { | |
275 | int fdtmp[256]; | |
276 | int fdx = 0; | |
277 | int fd; | |
278 | ||
279 | if (oldfd == newfd) | |
eadbc961 | 280 | return oldfd; |
f28e8a68 | 281 | close (newfd); |
eadbc961 | 282 | while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */ |
f28e8a68 RS |
283 | fdtmp[fdx++] = fd; |
284 | while (fdx > 0) | |
285 | close (fdtmp[--fdx]); | |
4d1a011f | 286 | |
eadbc961 | 287 | return fd; |
f28e8a68 RS |
288 | } |
289 | #endif | |
290 | ||
ed5b9462 | 291 | char * |
1fab8e81 | 292 | my_strerror (e) |
4e81a331 RS |
293 | int e; |
294 | { | |
4e81a331 RS |
295 | static char buffer[30]; |
296 | ||
297 | if (!e) | |
298 | return ""; | |
299 | ||
300 | if (e > 0 && e < sys_nerr) | |
301 | return sys_errlist[e]; | |
302 | ||
303 | sprintf (buffer, "Unknown error %d", e); | |
304 | return buffer; | |
305 | } | |
4e81a331 RS |
306 | \f |
307 | /* Delete tempfiles and exit function. */ | |
308 | ||
309 | static void | |
310 | my_exit (status) | |
311 | int status; | |
312 | { | |
ed5b9462 | 313 | if (c_file != 0 && c_file[0]) |
4e81a331 RS |
314 | maybe_unlink (c_file); |
315 | ||
ed5b9462 | 316 | if (o_file != 0 && o_file[0]) |
4e81a331 RS |
317 | maybe_unlink (o_file); |
318 | ||
0cdd3ddd RS |
319 | if (status != 0 && output_file != 0 && output_file[0]) |
320 | maybe_unlink (output_file); | |
321 | ||
4e81a331 RS |
322 | exit (status); |
323 | } | |
324 | ||
325 | \f | |
4e81a331 RS |
326 | /* Die when sys call fails. */ |
327 | ||
4e81a331 | 328 | static void |
1fab8e81 | 329 | fatal_perror (string, arg1, arg2, arg3) |
bd1a74b1 | 330 | char *string, *arg1, *arg2, *arg3; |
4e81a331 | 331 | { |
4e81a331 RS |
332 | int e = errno; |
333 | ||
626e18ea | 334 | fprintf (stderr, "collect2: "); |
1fab8e81 RS |
335 | fprintf (stderr, string, arg1, arg2, arg3); |
336 | fprintf (stderr, ": %s\n", my_strerror (e)); | |
4e81a331 RS |
337 | my_exit (1); |
338 | } | |
339 | ||
340 | /* Just die. */ | |
341 | ||
4e81a331 | 342 | static void |
1fab8e81 | 343 | fatal (string, arg1, arg2, arg3) |
bd1a74b1 | 344 | char *string, *arg1, *arg2, *arg3; |
4e81a331 | 345 | { |
626e18ea | 346 | fprintf (stderr, "collect2: "); |
1fab8e81 | 347 | fprintf (stderr, string, arg1, arg2, arg3); |
4e81a331 | 348 | fprintf (stderr, "\n"); |
4e81a331 RS |
349 | my_exit (1); |
350 | } | |
351 | ||
352 | /* Write error message. */ | |
353 | ||
4e81a331 | 354 | static void |
1fab8e81 | 355 | error (string, arg1, arg2, arg3, arg4) |
bd1a74b1 | 356 | char *string, *arg1, *arg2, *arg3, *arg4; |
4e81a331 | 357 | { |
626e18ea | 358 | fprintf (stderr, "collect2: "); |
1fab8e81 | 359 | fprintf (stderr, string, arg1, arg2, arg3, arg4); |
4e81a331 | 360 | fprintf (stderr, "\n"); |
4e81a331 RS |
361 | } |
362 | ||
4e81a331 RS |
363 | /* In case obstack is linked in, and abort is defined to fancy_abort, |
364 | provide a default entry. */ | |
365 | ||
366 | void | |
367 | fancy_abort () | |
368 | { | |
369 | fatal ("internal error"); | |
370 | } | |
371 | ||
372 | \f | |
373 | static void | |
374 | handler (signo) | |
375 | int signo; | |
376 | { | |
b31a1e3f | 377 | if (c_file != 0 && c_file[0]) |
4e81a331 RS |
378 | maybe_unlink (c_file); |
379 | ||
b31a1e3f | 380 | if (o_file != 0 && o_file[0]) |
4e81a331 RS |
381 | maybe_unlink (o_file); |
382 | ||
383 | signal (signo, SIG_DFL); | |
4e81a331 RS |
384 | kill (getpid (), signo); |
385 | } | |
386 | ||
387 | \f | |
388 | generic * | |
389 | xcalloc (size1, size2) | |
ed5b9462 | 390 | int size1, size2; |
4e81a331 | 391 | { |
ed5b9462 | 392 | generic *ptr = (generic *) calloc (size1, size2); |
4e81a331 RS |
393 | if (ptr) |
394 | return ptr; | |
395 | ||
1fab8e81 | 396 | fatal ("out of memory"); |
4e81a331 RS |
397 | return (generic *)0; |
398 | } | |
399 | ||
400 | generic * | |
401 | xmalloc (size) | |
ed5b9462 | 402 | int size; |
4e81a331 | 403 | { |
ed5b9462 | 404 | generic *ptr = (generic *) malloc (size); |
4e81a331 RS |
405 | if (ptr) |
406 | return ptr; | |
407 | ||
1fab8e81 | 408 | fatal ("out of memory"); |
4e81a331 RS |
409 | return (generic *)0; |
410 | } | |
411 | ||
ed5b9462 RS |
412 | /* Make a copy of a string INPUT with size SIZE. */ |
413 | ||
414 | char * | |
415 | savestring (input, size) | |
416 | char *input; | |
417 | int size; | |
418 | { | |
419 | char *output = (char *) xmalloc (size + 1); | |
1fab8e81 RS |
420 | bcopy (input, output, size); |
421 | output[size] = 0; | |
ed5b9462 RS |
422 | return output; |
423 | } | |
424 | \f | |
425 | /* Decide whether the given symbol is: | |
426 | a constructor (1), a destructor (2), or neither (0). */ | |
427 | ||
428 | static int | |
429 | is_ctor_dtor (s) | |
430 | char *s; | |
431 | { | |
432 | struct names { char *name; int len; int ret; int two_underscores; }; | |
433 | ||
434 | register struct names *p; | |
435 | register int ch; | |
436 | register char *orig_s = s; | |
437 | ||
438 | static struct names special[] = { | |
439 | #ifdef NO_DOLLAR_IN_LABEL | |
7cbfceab | 440 | #ifdef NO_DOT_IN_LABEL |
c52d2678 RS |
441 | { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 }, |
442 | { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 }, | |
7cbfceab | 443 | #else |
ed5b9462 RS |
444 | { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 }, |
445 | { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 }, | |
7cbfceab | 446 | #endif |
ed5b9462 RS |
447 | #else |
448 | { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 }, | |
5555d6d1 | 449 | { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 }, |
ed5b9462 | 450 | #endif |
c1af0346 RS |
451 | #ifdef CFRONT_LOSSAGE /* Don't collect cfront initialization functions. |
452 | cfront has its own linker procedure to collect them; | |
453 | if collect2 gets them too, they get collected twice | |
454 | when the cfront procedure is run and the compiler used | |
455 | for linking happens to be GCC. */ | |
ed5b9462 RS |
456 | { "sti__", sizeof ("sti__")-1, 1, 1 }, |
457 | { "std__", sizeof ("std__")-1, 2, 1 }, | |
7a646ee5 | 458 | #endif /* CFRONT_LOSSAGE */ |
ed5b9462 RS |
459 | { NULL, 0, 0, 0 } |
460 | }; | |
461 | ||
462 | while ((ch = *s) == '_') | |
463 | ++s; | |
464 | ||
465 | if (s == orig_s) | |
466 | return 0; | |
467 | ||
468 | for (p = &special[0]; p->len > 0; p++) | |
469 | { | |
470 | if (ch == p->name[0] | |
471 | && (!p->two_underscores || ((s - orig_s) >= 2)) | |
472 | && strncmp(s, p->name, p->len) == 0) | |
473 | { | |
474 | return p->ret; | |
475 | } | |
476 | } | |
477 | return 0; | |
478 | } | |
479 | ||
4e81a331 RS |
480 | \f |
481 | /* Compute a string to use as the base of all temporary file names. | |
482 | It is substituted for %g. */ | |
483 | ||
484 | static void | |
ed5b9462 | 485 | choose_temp_base () |
4e81a331 RS |
486 | { |
487 | char *base = getenv ("TMPDIR"); | |
488 | int len; | |
489 | ||
490 | if (base == (char *)0) | |
491 | { | |
492 | #ifdef P_tmpdir | |
493 | if (access (P_tmpdir, R_OK | W_OK) == 0) | |
494 | base = P_tmpdir; | |
495 | #endif | |
496 | if (base == (char *)0) | |
497 | { | |
498 | if (access ("/usr/tmp", R_OK | W_OK) == 0) | |
499 | base = "/usr/tmp/"; | |
500 | else | |
501 | base = "/tmp/"; | |
502 | } | |
503 | } | |
504 | ||
505 | len = strlen (base); | |
aee42e27 | 506 | temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1); |
4e81a331 RS |
507 | strcpy (temp_filename, base); |
508 | if (len > 0 && temp_filename[len-1] != '/') | |
509 | temp_filename[len++] = '/'; | |
510 | strcpy (temp_filename + len, "ccXXXXXX"); | |
511 | ||
512 | mktemp (temp_filename); | |
513 | temp_filename_length = strlen (temp_filename); | |
514 | } | |
bb59f9a6 | 515 | \f |
45840c57 RK |
516 | /* Routine to add variables to the environment. */ |
517 | ||
518 | #ifndef HAVE_PUTENV | |
519 | ||
4d1a011f | 520 | int |
45840c57 RK |
521 | putenv (str) |
522 | char *str; | |
523 | { | |
524 | #ifndef VMS /* nor about VMS */ | |
525 | ||
526 | extern char **environ; | |
527 | char **old_environ = environ; | |
528 | char **envp; | |
529 | int num_envs = 0; | |
530 | int name_len = 1; | |
45840c57 RK |
531 | char *p = str; |
532 | int ch; | |
533 | ||
534 | while ((ch = *p++) != '\0' && ch != '=') | |
535 | name_len++; | |
536 | ||
537 | if (!ch) | |
538 | abort (); | |
539 | ||
540 | /* Search for replacing an existing environment variable, and | |
541 | count the number of total environment variables. */ | |
542 | for (envp = old_environ; *envp; envp++) | |
543 | { | |
544 | num_envs++; | |
545 | if (!strncmp (str, *envp, name_len)) | |
546 | { | |
547 | *envp = str; | |
4d1a011f | 548 | return 0; |
45840c57 RK |
549 | } |
550 | } | |
551 | ||
552 | /* Add a new environment variable */ | |
553 | environ = (char **) xmalloc (sizeof (char *) * (num_envs+2)); | |
554 | *environ = str; | |
4c9a05bc RK |
555 | bcopy ((char *) old_environ, (char *) (environ + 1), |
556 | sizeof (char *) * (num_envs+1)); | |
557 | ||
4d1a011f | 558 | return 0; |
45840c57 RK |
559 | #endif /* VMS */ |
560 | } | |
561 | ||
562 | #endif /* HAVE_PUTENV */ | |
563 | \f | |
bb59f9a6 RS |
564 | /* By default, colon separates directories in a path. */ |
565 | #ifndef PATH_SEPARATOR | |
566 | #define PATH_SEPARATOR ':' | |
567 | #endif | |
568 | ||
bb59f9a6 RS |
569 | /* We maintain two prefix lists: one from COMPILER_PATH environment variable |
570 | and one from the PATH variable. */ | |
571 | ||
572 | static struct path_prefix cpath, path; | |
573 | ||
574 | #ifdef CROSS_COMPILE | |
575 | /* This is the name of the target machine. We use it to form the name | |
576 | of the files to execute. */ | |
577 | ||
578 | static char *target_machine = TARGET_MACHINE; | |
579 | #endif | |
720653a3 | 580 | |
45840c57 | 581 | /* Names under which we were executed. Never return one of those files in our |
720653a3 RK |
582 | searches. */ |
583 | ||
7223feb0 | 584 | static struct path_prefix our_file_names; |
bb59f9a6 | 585 | \f |
7223feb0 DE |
586 | /* Determine if STRING is in PPREFIX. |
587 | ||
588 | This utility is currently only used to look up file names. Prefix lists | |
589 | record directory names. This matters to us because the latter has a | |
590 | trailing slash, so I've added a flag to handle both. */ | |
591 | ||
592 | static int | |
593 | is_in_prefix_list (pprefix, string, filep) | |
594 | struct path_prefix *pprefix; | |
595 | char *string; | |
596 | int filep; | |
597 | { | |
598 | struct prefix_list *pl; | |
599 | ||
600 | if (filep) | |
601 | { | |
602 | int len = strlen (string); | |
603 | ||
604 | for (pl = pprefix->plist; pl; pl = pl->next) | |
605 | { | |
606 | if (strncmp (pl->prefix, string, len) == 0 | |
607 | && strcmp (pl->prefix + len, "/") == 0) | |
608 | return 1; | |
609 | } | |
610 | } | |
611 | else | |
612 | { | |
613 | for (pl = pprefix->plist; pl; pl = pl->next) | |
614 | { | |
615 | if (strcmp (pl->prefix, string) == 0) | |
616 | return 1; | |
617 | } | |
618 | } | |
619 | ||
620 | return 0; | |
621 | } | |
622 | ||
bb59f9a6 RS |
623 | /* Search for NAME using prefix list PPREFIX. We only look for executable |
624 | files. | |
625 | ||
626 | Return 0 if not found, otherwise return its name, allocated with malloc. */ | |
627 | ||
628 | static char * | |
629 | find_a_file (pprefix, name) | |
630 | struct path_prefix *pprefix; | |
631 | char *name; | |
632 | { | |
633 | char *temp; | |
634 | struct prefix_list *pl; | |
635 | int len = pprefix->max_len + strlen (name) + 1; | |
636 | ||
637 | #ifdef EXECUTABLE_SUFFIX | |
638 | len += strlen (EXECUTABLE_SUFFIX); | |
639 | #endif | |
640 | ||
641 | temp = xmalloc (len); | |
642 | ||
643 | /* Determine the filename to execute (special case for absolute paths). */ | |
644 | ||
645 | if (*name == '/') | |
646 | { | |
e8fda1f9 | 647 | if (access (name, X_OK) == 0) |
bb59f9a6 RS |
648 | { |
649 | strcpy (temp, name); | |
650 | return temp; | |
651 | } | |
652 | } | |
653 | else | |
654 | for (pl = pprefix->plist; pl; pl = pl->next) | |
655 | { | |
656 | strcpy (temp, pl->prefix); | |
657 | strcat (temp, name); | |
7223feb0 | 658 | if (! is_in_prefix_list (&our_file_names, temp, 1) |
aee3a549 RK |
659 | /* This is a kludge, but there seems no way around it. */ |
660 | && strcmp (temp, "./ld") != 0 | |
45840c57 | 661 | && access (temp, X_OK) == 0) |
bb59f9a6 RS |
662 | return temp; |
663 | ||
664 | #ifdef EXECUTABLE_SUFFIX | |
665 | /* Some systems have a suffix for executable files. | |
666 | So try appending that. */ | |
667 | strcat (temp, EXECUTABLE_SUFFIX); | |
7223feb0 | 668 | if (! is_in_prefix_list (&our_file_names, temp, 1) |
45840c57 | 669 | && access (temp, X_OK) == 0) |
bb59f9a6 RS |
670 | return temp; |
671 | #endif | |
672 | } | |
673 | ||
674 | free (temp); | |
675 | return 0; | |
676 | } | |
677 | ||
678 | /* Add an entry for PREFIX to prefix list PPREFIX. */ | |
679 | ||
680 | static void | |
681 | add_prefix (pprefix, prefix) | |
682 | struct path_prefix *pprefix; | |
683 | char *prefix; | |
684 | { | |
685 | struct prefix_list *pl, **prev; | |
686 | int len; | |
687 | ||
688 | if (pprefix->plist) | |
689 | { | |
690 | for (pl = pprefix->plist; pl->next; pl = pl->next) | |
691 | ; | |
692 | prev = &pl->next; | |
693 | } | |
694 | else | |
695 | prev = &pprefix->plist; | |
696 | ||
697 | /* Keep track of the longest prefix */ | |
698 | ||
699 | len = strlen (prefix); | |
700 | if (len > pprefix->max_len) | |
701 | pprefix->max_len = len; | |
702 | ||
703 | pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list)); | |
704 | pl->prefix = savestring (prefix, len); | |
705 | ||
706 | if (*prev) | |
707 | pl->next = *prev; | |
708 | else | |
709 | pl->next = (struct prefix_list *) 0; | |
710 | *prev = pl; | |
711 | } | |
712 | \f | |
713 | /* Take the value of the environment variable ENV, break it into a path, and | |
714 | add of the entries to PPREFIX. */ | |
715 | ||
716 | static void | |
717 | prefix_from_env (env, pprefix) | |
718 | char *env; | |
719 | struct path_prefix *pprefix; | |
720 | { | |
721 | char *p = getenv (env); | |
722 | ||
723 | if (p) | |
724 | { | |
725 | char *startp, *endp; | |
726 | char *nstore = (char *) xmalloc (strlen (p) + 3); | |
727 | ||
728 | startp = endp = p; | |
729 | while (1) | |
730 | { | |
731 | if (*endp == PATH_SEPARATOR || *endp == 0) | |
732 | { | |
733 | strncpy (nstore, startp, endp-startp); | |
734 | if (endp == startp) | |
735 | { | |
736 | strcpy (nstore, "./"); | |
737 | } | |
738 | else if (endp[-1] != '/') | |
739 | { | |
740 | nstore[endp-startp] = '/'; | |
741 | nstore[endp-startp+1] = 0; | |
742 | } | |
743 | else | |
744 | nstore[endp-startp] = 0; | |
4e81a331 | 745 | |
bb59f9a6 RS |
746 | add_prefix (pprefix, nstore); |
747 | if (*endp == 0) | |
748 | break; | |
749 | endp = startp = endp + 1; | |
750 | } | |
751 | else | |
752 | endp++; | |
753 | } | |
754 | } | |
755 | } | |
4e81a331 RS |
756 | \f |
757 | /* Main program. */ | |
758 | ||
759 | int | |
760 | main (argc, argv) | |
761 | int argc; | |
762 | char *argv[]; | |
763 | { | |
bb59f9a6 RS |
764 | char *ld_suffix = "ld"; |
765 | char *full_ld_suffix = ld_suffix; | |
766 | char *real_ld_suffix = "real-ld"; | |
e8fda1f9 | 767 | char *full_real_ld_suffix = real_ld_suffix; |
98552524 | 768 | #if 0 |
bb59f9a6 RS |
769 | char *gld_suffix = "gld"; |
770 | char *full_gld_suffix = gld_suffix; | |
98552524 | 771 | #endif |
bb59f9a6 RS |
772 | char *nm_suffix = "nm"; |
773 | char *full_nm_suffix = nm_suffix; | |
774 | char *gnm_suffix = "gnm"; | |
775 | char *full_gnm_suffix = gnm_suffix; | |
776 | char *strip_suffix = "strip"; | |
777 | char *full_strip_suffix = strip_suffix; | |
778 | char *gstrip_suffix = "gstrip"; | |
779 | char *full_gstrip_suffix = gstrip_suffix; | |
4e81a331 RS |
780 | char *arg; |
781 | FILE *outf; | |
782 | char *ld_file_name; | |
783 | char *c_file_name; | |
588e387f | 784 | char *collect_name; |
7223feb0 | 785 | char *collect_names; |
4e81a331 | 786 | char *p; |
ed5b9462 RS |
787 | char **c_argv; |
788 | char **c_ptr; | |
4e81a331 RS |
789 | char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+2); |
790 | char **ld1 = ld1_argv; | |
791 | char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+5); | |
792 | char **ld2 = ld2_argv; | |
793 | int first_file; | |
ed5b9462 | 794 | int num_c_args = argc+7; |
4e81a331 RS |
795 | |
796 | #ifdef DEBUG | |
797 | debug = 1; | |
798 | vflag = 1; | |
799 | #endif | |
800 | ||
0cdd3ddd RS |
801 | output_file = "a.out"; |
802 | ||
45840c57 | 803 | /* We must check that we do not call ourselves in an infinite |
588e387f DE |
804 | recursion loop. We append the name used for us to the COLLECT_NAMES |
805 | environment variable. | |
45840c57 | 806 | |
7223feb0 DE |
807 | In practice, collect will rarely invoke itself. This can happen now |
808 | that we are no longer called gld. A perfect example is when running | |
809 | gcc in a build directory that has been installed. When looking for | |
810 | ld's, we'll find our installed version and believe that's the real ld. */ | |
45840c57 | 811 | |
588e387f DE |
812 | /* We must also append COLLECT_NAME to COLLECT_NAMES to watch for the |
813 | previous version of collect (the one that used COLLECT_NAME and only | |
814 | handled two levels of recursion). If we don't we may mutually recurse | |
815 | forever. This can happen (I think) when bootstrapping the old version | |
816 | and a new one is installed (rare, but we should handle it). | |
817 | ??? Hopefully references to COLLECT_NAME can be removed at some point. */ | |
818 | ||
819 | collect_name = (char *) getenv ("COLLECT_NAME"); | |
7223feb0 | 820 | collect_names = (char *) getenv ("COLLECT_NAMES"); |
45840c57 | 821 | |
7223feb0 | 822 | p = (char *) xmalloc (strlen ("COLLECT_NAMES=") |
588e387f | 823 | + (collect_name ? strlen (collect_name) + 1 : 0) |
7223feb0 DE |
824 | + (collect_names ? strlen (collect_names) + 1 : 0) |
825 | + strlen (argv[0]) + 1); | |
588e387f DE |
826 | strcpy (p, "COLLECT_NAMES="); |
827 | if (collect_name != 0) | |
828 | sprintf (p + strlen (p), "%s%c", collect_name, PATH_SEPARATOR); | |
7223feb0 | 829 | if (collect_names != 0) |
588e387f DE |
830 | sprintf (p + strlen (p), "%s%c", collect_names, PATH_SEPARATOR); |
831 | strcat (p, argv[0]); | |
45840c57 RK |
832 | putenv (p); |
833 | ||
7223feb0 DE |
834 | prefix_from_env ("COLLECT_NAMES", &our_file_names); |
835 | ||
588e387f DE |
836 | /* Set environment variable COLLECT_NAME to our name so the previous version |
837 | of collect won't find us. If it does we'll mutually recurse forever. | |
838 | This can happen when bootstrapping the new version and an old version is | |
839 | installed. | |
840 | ??? Hopefully this bit of code can be removed at some point. */ | |
841 | ||
842 | p = xmalloc (strlen ("COLLECT_NAME=") + strlen (argv[0]) + 1); | |
843 | sprintf (p, "COLLECT_NAME=%s", argv[0]); | |
844 | putenv (p); | |
845 | ||
ed5b9462 RS |
846 | p = (char *) getenv ("COLLECT_GCC_OPTIONS"); |
847 | if (p) | |
848 | while (*p) | |
849 | { | |
850 | char *q = p; | |
851 | while (*q && *q != ' ') q++; | |
17704846 | 852 | if (*p == '-' && p[1] == 'm') |
ed5b9462 RS |
853 | num_c_args++; |
854 | ||
855 | if (*q) q++; | |
856 | p = q; | |
857 | } | |
858 | ||
859 | c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args); | |
860 | ||
4e81a331 RS |
861 | if (argc < 2) |
862 | fatal ("no arguments"); | |
863 | ||
8ab861c7 | 864 | #ifdef SIGQUIT |
915ee623 JW |
865 | if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) |
866 | signal (SIGQUIT, handler); | |
8ab861c7 | 867 | #endif |
915ee623 JW |
868 | if (signal (SIGINT, SIG_IGN) != SIG_IGN) |
869 | signal (SIGINT, handler); | |
8ab861c7 | 870 | #ifdef SIGALRM |
915ee623 JW |
871 | if (signal (SIGALRM, SIG_IGN) != SIG_IGN) |
872 | signal (SIGALRM, handler); | |
8ab861c7 RK |
873 | #endif |
874 | #ifdef SIGHUP | |
915ee623 JW |
875 | if (signal (SIGHUP, SIG_IGN) != SIG_IGN) |
876 | signal (SIGHUP, handler); | |
8ab861c7 | 877 | #endif |
915ee623 JW |
878 | if (signal (SIGSEGV, SIG_IGN) != SIG_IGN) |
879 | signal (SIGSEGV, handler); | |
8ab861c7 | 880 | #ifdef SIGBUS |
915ee623 JW |
881 | if (signal (SIGBUS, SIG_IGN) != SIG_IGN) |
882 | signal (SIGBUS, handler); | |
8ab861c7 | 883 | #endif |
4e81a331 | 884 | |
bb59f9a6 RS |
885 | /* Extract COMPILER_PATH and PATH into our prefix list. */ |
886 | prefix_from_env ("COMPILER_PATH", &cpath); | |
887 | prefix_from_env ("PATH", &path); | |
4e81a331 | 888 | |
bb59f9a6 RS |
889 | #ifdef CROSS_COMPILE |
890 | /* If we look for a program in the compiler directories, we just use | |
891 | the short name, since these directories are already system-specific. | |
892 | But it we look for a took in the system directories, we need to | |
893 | qualify the program name with the target machine. */ | |
894 | ||
895 | full_ld_suffix | |
aee42e27 | 896 | = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1); |
46c74083 | 897 | strcpy (full_ld_suffix, target_machine); |
bb59f9a6 | 898 | strcat (full_ld_suffix, "-"); |
46c74083 | 899 | strcat (full_ld_suffix, ld_suffix); |
bb59f9a6 RS |
900 | |
901 | full_real_ld_suffix | |
aee42e27 | 902 | = xcalloc (strlen (real_ld_suffix) + strlen (target_machine) + 2, 1); |
46c74083 | 903 | strcpy (full_real_ld_suffix, target_machine); |
bb59f9a6 | 904 | strcat (full_real_ld_suffix, "-"); |
46c74083 | 905 | strcat (full_real_ld_suffix, real_ld_suffix); |
bb59f9a6 | 906 | |
98552524 | 907 | #if 0 |
bb59f9a6 | 908 | full_gld_suffix |
aee42e27 | 909 | = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1); |
46c74083 | 910 | strcpy (full_gld_suffix, target_machine); |
bb59f9a6 | 911 | strcat (full_gld_suffix, "-"); |
46c74083 | 912 | strcat (full_gld_suffix, gld_suffix); |
98552524 | 913 | #endif |
bb59f9a6 RS |
914 | |
915 | full_nm_suffix | |
aee42e27 | 916 | = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1); |
46c74083 | 917 | strcpy (full_nm_suffix, target_machine); |
bb59f9a6 | 918 | strcat (full_nm_suffix, "-"); |
46c74083 | 919 | strcat (full_nm_suffix, nm_suffix); |
bb59f9a6 RS |
920 | |
921 | full_gnm_suffix | |
aee42e27 | 922 | = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1); |
46c74083 | 923 | strcpy (full_gnm_suffix, target_machine); |
bb59f9a6 | 924 | strcat (full_gnm_suffix, "-"); |
46c74083 | 925 | strcat (full_gnm_suffix, gnm_suffix); |
bb59f9a6 RS |
926 | |
927 | full_strip_suffix | |
aee42e27 | 928 | = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1); |
46c74083 | 929 | strcpy (full_strip_suffix, target_machine); |
bb59f9a6 | 930 | strcat (full_strip_suffix, "-"); |
46c74083 | 931 | strcat (full_strip_suffix, strip_suffix); |
bb59f9a6 RS |
932 | |
933 | full_gstrip_suffix | |
aee42e27 | 934 | = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1); |
46c74083 | 935 | strcpy (full_gstrip_suffix, target_machine); |
bb59f9a6 | 936 | strcat (full_gstrip_suffix, "-"); |
46c74083 | 937 | strcat (full_gstrip_suffix, gstrip_suffix); |
bb59f9a6 RS |
938 | #endif /* CROSS_COMPILE */ |
939 | ||
940 | /* Try to discover a valid linker/nm/strip to use. */ | |
941 | ||
98552524 | 942 | #if 0 |
bb59f9a6 RS |
943 | /* Search the (target-specific) compiler dirs for `gld'. */ |
944 | ld_file_name = find_a_file (&cpath, gld_suffix); | |
945 | /* Search the ordinary system bin directories | |
46c74083 | 946 | for `gld' (if native linking) or `TARGET-gld' (if cross). */ |
bb59f9a6 RS |
947 | if (ld_file_name == 0) |
948 | ld_file_name = find_a_file (&path, full_gld_suffix); | |
6c61ac77 DE |
949 | #else |
950 | ld_file_name = 0; | |
98552524 | 951 | #endif |
bb59f9a6 RS |
952 | /* Likewise for `real-ld'. */ |
953 | if (ld_file_name == 0) | |
954 | ld_file_name = find_a_file (&cpath, real_ld_suffix); | |
955 | if (ld_file_name == 0) | |
956 | ld_file_name = find_a_file (&path, full_real_ld_suffix); | |
957 | /* Maybe we know the right file to use (if not cross). */ | |
958 | #ifdef REAL_LD_FILE_NAME | |
959 | if (ld_file_name == 0) | |
960 | ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME); | |
4e81a331 | 961 | #endif |
b3a2ef94 RK |
962 | /* Search the compiler directories for `ld'. We have protection against |
963 | recursive calls in find_a_file. */ | |
f820b898 | 964 | if (ld_file_name == 0) |
b3a2ef94 | 965 | ld_file_name = find_a_file (&cpath, ld_suffix); |
bb59f9a6 | 966 | /* Search the ordinary system bin directories |
46c74083 | 967 | for `ld' (if native linking) or `TARGET-ld' (if cross). */ |
bb59f9a6 RS |
968 | if (ld_file_name == 0) |
969 | ld_file_name = find_a_file (&path, full_ld_suffix); | |
970 | ||
7223feb0 DE |
971 | /* If we've invoked ourselves, try again with LD_FILE_NAME. */ |
972 | ||
973 | if (collect_names != 0) | |
974 | { | |
975 | if (ld_file_name != 0) | |
976 | { | |
977 | argv[0] = ld_file_name; | |
978 | execvp (argv[0], argv); | |
979 | } | |
980 | fatal ("cannot find `ld'"); | |
981 | } | |
982 | ||
bb59f9a6 RS |
983 | nm_file_name = find_a_file (&cpath, gnm_suffix); |
984 | if (nm_file_name == 0) | |
985 | nm_file_name = find_a_file (&path, full_gnm_suffix); | |
986 | if (nm_file_name == 0) | |
987 | nm_file_name = find_a_file (&cpath, nm_suffix); | |
988 | #ifdef REAL_NM_FILE_NAME | |
989 | if (nm_file_name == 0) | |
990 | nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME); | |
aaf625e5 | 991 | #endif |
bb59f9a6 RS |
992 | if (nm_file_name == 0) |
993 | nm_file_name = find_a_file (&path, full_nm_suffix); | |
994 | ||
995 | strip_file_name = find_a_file (&cpath, gstrip_suffix); | |
996 | if (strip_file_name == 0) | |
997 | strip_file_name = find_a_file (&path, full_gstrip_suffix); | |
998 | if (strip_file_name == 0) | |
999 | strip_file_name = find_a_file (&cpath, strip_suffix); | |
1000 | #ifdef REAL_STRIP_FILE_NAME | |
1001 | if (strip_file_name == 0) | |
1002 | strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME); | |
4e81a331 | 1003 | #endif |
bb59f9a6 RS |
1004 | if (strip_file_name == 0) |
1005 | strip_file_name = find_a_file (&path, full_strip_suffix); | |
4e81a331 | 1006 | |
a87104d9 | 1007 | /* Determine the full path name of the C compiler to use. */ |
ed5b9462 | 1008 | c_file_name = getenv ("COLLECT_GCC"); |
5365d6ee | 1009 | if (c_file_name == 0) |
4e81a331 | 1010 | { |
bb59f9a6 | 1011 | #ifdef CROSS_COMPILE |
aee42e27 | 1012 | c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1); |
46c74083 RS |
1013 | strcpy (c_file_name, target_machine); |
1014 | strcat (c_file_name, "-gcc"); | |
4e81a331 | 1015 | #else |
bb59f9a6 | 1016 | c_file_name = "gcc"; |
a87104d9 | 1017 | #endif |
a87104d9 MM |
1018 | } |
1019 | ||
bb59f9a6 RS |
1020 | p = find_a_file (&cpath, c_file_name); |
1021 | ||
1022 | /* Here it should be safe to use the system search path since we should have | |
1023 | already qualified the name of the compiler when it is needed. */ | |
1024 | if (p == 0) | |
1025 | p = find_a_file (&path, c_file_name); | |
1026 | ||
1027 | if (p) | |
1028 | c_file_name = p; | |
4e81a331 | 1029 | |
45840c57 | 1030 | *ld1++ = *ld2++ = ld_file_name; |
4e81a331 RS |
1031 | |
1032 | /* Make temp file names. */ | |
1033 | choose_temp_base (); | |
1034 | c_file = xcalloc (temp_filename_length + sizeof (".c"), 1); | |
1035 | o_file = xcalloc (temp_filename_length + sizeof (".o"), 1); | |
1036 | sprintf (c_file, "%s.c", temp_filename); | |
1037 | sprintf (o_file, "%s.o", temp_filename); | |
ed5b9462 | 1038 | *c_ptr++ = c_file_name; |
4e81a331 RS |
1039 | *c_ptr++ = "-c"; |
1040 | *c_ptr++ = "-o"; | |
1041 | *c_ptr++ = o_file; | |
1042 | ||
ed5b9462 RS |
1043 | /* !!! When GCC calls collect2, |
1044 | it does not know whether it is calling collect2 or ld. | |
1045 | So collect2 cannot meaningfully understand any options | |
1046 | except those ld understands. | |
1047 | If you propose to make GCC pass some other option, | |
1048 | just imagine what will happen if ld is really ld!!! */ | |
1049 | ||
4e81a331 | 1050 | /* Parse arguments. Remember output file spec, pass the rest to ld. */ |
ed5b9462 RS |
1051 | /* After the first file, put in the c++ rt0. */ |
1052 | ||
4e81a331 RS |
1053 | first_file = 1; |
1054 | while ((arg = *++argv) != (char *)0) | |
1055 | { | |
1056 | *ld1++ = *ld2++ = arg; | |
1057 | ||
1058 | if (arg[0] == '-') | |
2d5e74ca JM |
1059 | { |
1060 | #ifdef COLLECT_SUPPRESS_OPTIONS | |
1061 | if (index (COLLECT_SUPPRESS_OPTIONS, arg[1])) | |
1062 | { | |
1063 | ld1--; | |
1064 | continue; | |
1065 | } | |
1066 | #endif | |
4e81a331 RS |
1067 | switch (arg[1]) |
1068 | { | |
1069 | case 'd': | |
1070 | if (!strcmp (arg, "-debug")) | |
1071 | { | |
1072 | debug = 1; | |
1073 | vflag = 1; | |
1074 | ld1--; | |
1075 | ld2--; | |
1076 | } | |
1077 | break; | |
1078 | ||
4e81a331 | 1079 | case 'o': |
0cdd3ddd | 1080 | output_file = (arg[2] == '\0') ? argv[1] : &arg[2]; |
4e81a331 RS |
1081 | break; |
1082 | ||
1083 | case 'r': | |
1084 | if (arg[2] == '\0') | |
1085 | rflag = 1; | |
1086 | break; | |
1087 | ||
a87104d9 MM |
1088 | case 's': |
1089 | if (arg[2] == '\0') | |
1090 | { | |
1091 | /* We must strip after the nm run, otherwise C++ linking | |
1092 | won't work. Thus we strip in the second ld run, or | |
1093 | else with strip if there is no second ld run. */ | |
1094 | strip_flag = 1; | |
1095 | ld1--; | |
1096 | } | |
1097 | break; | |
1098 | ||
4e81a331 RS |
1099 | case 'v': |
1100 | if (arg[2] == '\0') | |
1101 | vflag = 1; | |
1102 | break; | |
1103 | } | |
2d5e74ca | 1104 | } |
4e81a331 | 1105 | else if (first_file |
3f7cc57a | 1106 | && (p = rindex (arg, '.')) != (char *)0 |
4e81a331 RS |
1107 | && strcmp (p, ".o") == 0) |
1108 | { | |
1109 | first_file = 0; | |
1110 | *ld2++ = o_file; | |
1111 | } | |
1112 | } | |
1113 | ||
ed5b9462 RS |
1114 | /* Get any options that the upper GCC wants to pass to the sub-GCC. */ |
1115 | p = (char *) getenv ("COLLECT_GCC_OPTIONS"); | |
1116 | if (p) | |
1117 | while (*p) | |
1118 | { | |
1119 | char *q = p; | |
1120 | while (*q && *q != ' ') q++; | |
1121 | if (*p == '-' && (p[1] == 'm' || p[1] == 'f')) | |
1122 | *c_ptr++ = savestring (p, q - p); | |
1123 | ||
1124 | if (*q) q++; | |
1125 | p = q; | |
1126 | } | |
1127 | ||
4e81a331 RS |
1128 | *c_ptr++ = c_file; |
1129 | *c_ptr = *ld1 = *ld2 = (char *)0; | |
1130 | ||
1131 | if (vflag) | |
1132 | { | |
ed5b9462 | 1133 | fprintf (stderr, "collect2 version %s", version_string); |
4e81a331 RS |
1134 | #ifdef TARGET_VERSION |
1135 | TARGET_VERSION; | |
1136 | #endif | |
1137 | fprintf (stderr, "\n"); | |
1138 | } | |
1139 | ||
1140 | if (debug) | |
1141 | { | |
ed5b9462 | 1142 | char *ptr; |
a1549b15 RS |
1143 | fprintf (stderr, "ld_file_name = %s\n", |
1144 | (ld_file_name ? ld_file_name : "not found")); | |
1145 | fprintf (stderr, "c_file_name = %s\n", | |
1146 | (c_file_name ? c_file_name : "not found")); | |
1147 | fprintf (stderr, "nm_file_name = %s\n", | |
1148 | (nm_file_name ? nm_file_name : "not found")); | |
1149 | fprintf (stderr, "strip_file_name = %s\n", | |
1150 | (strip_file_name ? strip_file_name : "not found")); | |
1151 | fprintf (stderr, "c_file = %s\n", | |
1152 | (c_file ? c_file : "not found")); | |
1153 | fprintf (stderr, "o_file = %s\n", | |
1154 | (o_file ? o_file : "not found")); | |
ed5b9462 | 1155 | |
7223feb0 DE |
1156 | ptr = getenv ("COLLECT_NAMES"); |
1157 | if (ptr) | |
1158 | fprintf (stderr, "COLLECT_NAMES = %s\n", ptr); | |
1159 | ||
ed5b9462 RS |
1160 | ptr = getenv ("COLLECT_GCC_OPTIONS"); |
1161 | if (ptr) | |
1162 | fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr); | |
1163 | ||
1164 | ptr = getenv ("COLLECT_GCC"); | |
1165 | if (ptr) | |
1166 | fprintf (stderr, "COLLECT_GCC = %s\n", ptr); | |
1167 | ||
1168 | ptr = getenv ("COMPILER_PATH"); | |
1169 | if (ptr) | |
1170 | fprintf (stderr, "COMPILER_PATH = %s\n", ptr); | |
1171 | ||
1172 | ptr = getenv ("LIBRARY_PATH"); | |
1173 | if (ptr) | |
1174 | fprintf (stderr, "LIBRARY_PATH = %s\n", ptr); | |
1175 | ||
1176 | fprintf (stderr, "\n"); | |
4e81a331 RS |
1177 | } |
1178 | ||
1179 | /* Load the program, searching all libraries. | |
1180 | Examine the namelist with nm and search it for static constructors | |
1181 | and destructors to call. | |
1182 | Write the constructor and destructor tables to a .s file and reload. */ | |
1183 | ||
aee3a549 | 1184 | fork_execute ("ld", ld1_argv); |
4e81a331 RS |
1185 | |
1186 | /* If -r, don't build the constructor or destructor list, just return now. */ | |
1187 | if (rflag) | |
1188 | return 0; | |
1189 | ||
0cdd3ddd | 1190 | scan_prog_file (output_file, PASS_FIRST); |
4e81a331 RS |
1191 | |
1192 | if (debug) | |
1193 | { | |
1194 | fprintf (stderr, "%d constructor(s) found\n", constructors.number); | |
1195 | fprintf (stderr, "%d destructor(s) found\n", destructors.number); | |
1196 | } | |
1197 | ||
1198 | if (constructors.number == 0 && destructors.number == 0) | |
a87104d9 MM |
1199 | { |
1200 | /* Strip now if it was requested on the command line. */ | |
1201 | if (strip_flag) | |
1202 | { | |
1203 | char **strip_argv = (char **) xcalloc (sizeof (char *), 3); | |
aee3a549 | 1204 | strip_argv[0] = strip_file_name; |
0cdd3ddd | 1205 | strip_argv[1] = output_file; |
a87104d9 | 1206 | strip_argv[2] = (char *) 0; |
aee3a549 | 1207 | fork_execute ("strip", strip_argv); |
a87104d9 MM |
1208 | } |
1209 | return 0; | |
1210 | } | |
4e81a331 | 1211 | |
eeed1288 | 1212 | maybe_unlink(output_file); |
4e81a331 RS |
1213 | outf = fopen (c_file, "w"); |
1214 | if (outf == (FILE *)0) | |
1fab8e81 | 1215 | fatal_perror ("%s", c_file); |
4e81a331 RS |
1216 | |
1217 | write_c_file (outf, c_file); | |
1218 | ||
1219 | if (fclose (outf)) | |
1fab8e81 | 1220 | fatal_perror ("closing %s", c_file); |
4e81a331 RS |
1221 | |
1222 | if (debug) | |
1223 | { | |
0cdd3ddd RS |
1224 | fprintf (stderr, "\n========== output_file = %s, c_file = %s\n", |
1225 | output_file, c_file); | |
4e81a331 RS |
1226 | write_c_file (stderr, "stderr"); |
1227 | fprintf (stderr, "========== end of c_file\n\n"); | |
1228 | } | |
1229 | ||
1230 | /* Assemble the constructor and destructor tables. | |
1231 | Link the tables in with the rest of the program. */ | |
1232 | ||
aee3a549 RK |
1233 | fork_execute ("gcc", c_argv); |
1234 | fork_execute ("ld", ld2_argv); | |
4e81a331 RS |
1235 | |
1236 | /* Let scan_prog_file do any final mods (OSF/rose needs this for | |
1237 | constructors/destructors in shared libraries. */ | |
0cdd3ddd | 1238 | scan_prog_file (output_file, PASS_SECOND); |
4e81a331 RS |
1239 | |
1240 | maybe_unlink (c_file); | |
1241 | maybe_unlink (o_file); | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | \f | |
1246 | /* Wait for a process to finish, and exit if a non-zero status is found. */ | |
1247 | ||
1248 | static void | |
1249 | do_wait (prog) | |
1250 | char *prog; | |
1251 | { | |
1252 | int status; | |
1253 | ||
1254 | wait (&status); | |
1255 | if (status) | |
1256 | { | |
ed5b9462 | 1257 | int sig = status & 0x7F; |
4e81a331 RS |
1258 | int ret; |
1259 | ||
1260 | if (sig != -1 && sig != 0) | |
1261 | { | |
ed5b9462 RS |
1262 | #ifdef NO_SYS_SIGLIST |
1263 | error ("%s terminated with signal %d %s", | |
1264 | prog, | |
1265 | sig, | |
1266 | (status & 0200) ? ", core dumped" : ""); | |
1267 | #else | |
4e81a331 RS |
1268 | error ("%s terminated with signal %d [%s]%s", |
1269 | prog, | |
1270 | sig, | |
1271 | sys_siglist[sig], | |
1272 | (status & 0200) ? ", core dumped" : ""); | |
ed5b9462 | 1273 | #endif |
4e81a331 RS |
1274 | |
1275 | my_exit (127); | |
1276 | } | |
1277 | ||
ed5b9462 | 1278 | ret = ((status & 0xFF00) >> 8); |
4e81a331 RS |
1279 | if (ret != -1 && ret != 0) |
1280 | { | |
1281 | error ("%s returned %d exit status", prog, ret); | |
1282 | my_exit (ret); | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | \f | |
1288 | /* Fork and execute a program, and wait for the reply. */ | |
1289 | ||
1290 | static void | |
1291 | fork_execute (prog, argv) | |
1292 | char *prog; | |
1293 | char **argv; | |
1294 | { | |
1295 | int pid; | |
4e81a331 RS |
1296 | |
1297 | if (vflag || debug) | |
1298 | { | |
1299 | char **p_argv; | |
1300 | char *str; | |
1301 | ||
aee3a549 RK |
1302 | if (argv[0]) |
1303 | fprintf (stderr, "%s", argv[0]); | |
bb59f9a6 | 1304 | else |
aee3a549 | 1305 | fprintf (stderr, "[cannot find %s]", prog); |
bb59f9a6 | 1306 | |
4e81a331 RS |
1307 | for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++) |
1308 | fprintf (stderr, " %s", str); | |
1309 | ||
1310 | fprintf (stderr, "\n"); | |
1311 | } | |
1312 | ||
1313 | fflush (stdout); | |
1314 | fflush (stderr); | |
1315 | ||
bb59f9a6 RS |
1316 | /* If we can't find a program we need, complain error. Do this here |
1317 | since we might not end up needing something that we couldn't find. */ | |
1318 | ||
aee3a549 RK |
1319 | if (argv[0] == 0) |
1320 | fatal ("cannot find `%s'", prog); | |
bb59f9a6 | 1321 | |
4e81a331 RS |
1322 | pid = vfork (); |
1323 | if (pid == -1) | |
cf0c751a JW |
1324 | { |
1325 | #ifdef vfork | |
1326 | fatal_perror ("fork"); | |
1327 | #else | |
1328 | fatal_perror ("vfork"); | |
1329 | #endif | |
1330 | } | |
4e81a331 RS |
1331 | |
1332 | if (pid == 0) /* child context */ | |
1333 | { | |
aee3a549 | 1334 | execvp (argv[0], argv); |
1fab8e81 | 1335 | fatal_perror ("executing %s", prog); |
4e81a331 RS |
1336 | } |
1337 | ||
4e81a331 | 1338 | do_wait (prog); |
4e81a331 RS |
1339 | } |
1340 | ||
1341 | \f | |
1342 | /* Unlink a file unless we are debugging. */ | |
1343 | ||
1344 | static void | |
1345 | maybe_unlink (file) | |
1346 | char *file; | |
1347 | { | |
1348 | if (!debug) | |
1349 | unlink (file); | |
1350 | else | |
1351 | fprintf (stderr, "[Leaving %s]\n", file); | |
1352 | } | |
1353 | ||
1354 | \f | |
1355 | /* Add a name to a linked list. */ | |
1356 | ||
1357 | static void | |
1358 | add_to_list (head_ptr, name) | |
1359 | struct head *head_ptr; | |
1360 | char *name; | |
1361 | { | |
1362 | struct id *newid = (struct id *) xcalloc (sizeof (*newid) + strlen (name), 1); | |
1363 | static long sequence_number = 0; | |
1364 | newid->sequence = ++sequence_number; | |
1365 | strcpy (newid->name, name); | |
1366 | ||
1367 | if (head_ptr->first) | |
1368 | head_ptr->last->next = newid; | |
1369 | else | |
1370 | head_ptr->first = newid; | |
1371 | ||
1372 | head_ptr->last = newid; | |
1373 | head_ptr->number++; | |
1374 | } | |
1375 | ||
1376 | /* Write: `prefix', the names on list LIST, `suffix'. */ | |
1377 | ||
1378 | static void | |
1379 | write_list (stream, prefix, list) | |
1380 | FILE *stream; | |
1381 | char *prefix; | |
1382 | struct id *list; | |
1383 | { | |
1384 | while (list) | |
1385 | { | |
1386 | fprintf (stream, "%sx%d,\n", prefix, list->sequence); | |
1387 | list = list->next; | |
1388 | } | |
1389 | } | |
1390 | ||
1391 | static void | |
1392 | write_list_with_asm (stream, prefix, list) | |
1393 | FILE *stream; | |
1394 | char *prefix; | |
1395 | struct id *list; | |
1396 | { | |
1397 | while (list) | |
1398 | { | |
c7af43d8 | 1399 | fprintf (stream, "%sx%d __asm__ (\"%s\");\n", |
4e81a331 RS |
1400 | prefix, list->sequence, list->name); |
1401 | list = list->next; | |
1402 | } | |
1403 | } | |
1404 | ||
1405 | /* Write the constructor/destructor tables. */ | |
1406 | ||
1407 | static void | |
1408 | write_c_file (stream, name) | |
1409 | FILE *stream; | |
1410 | char *name; | |
1411 | { | |
1412 | /* Write the tables as C code */ | |
1413 | ||
1414 | fprintf (stream, "typedef void entry_pt();\n\n"); | |
1415 | ||
17704846 | 1416 | write_list_with_asm (stream, "extern entry_pt ", constructors.first); |
4e81a331 RS |
1417 | |
1418 | fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n"); | |
1419 | fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number); | |
ed5b9462 | 1420 | write_list (stream, "\t", constructors.first); |
4e81a331 RS |
1421 | fprintf (stream, "\t0\n};\n\n"); |
1422 | ||
17704846 | 1423 | write_list_with_asm (stream, "extern entry_pt ", destructors.first); |
4e81a331 RS |
1424 | |
1425 | fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n"); | |
1426 | fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number); | |
ed5b9462 | 1427 | write_list (stream, "\t", destructors.first); |
4e81a331 RS |
1428 | fprintf (stream, "\t0\n};\n\n"); |
1429 | ||
d6cf3187 RS |
1430 | fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN); |
1431 | fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN); | |
4e81a331 RS |
1432 | } |
1433 | ||
1434 | \f | |
ed5b9462 | 1435 | #ifdef OBJECT_FORMAT_NONE |
4e81a331 | 1436 | |
ed5b9462 RS |
1437 | /* Generic version to scan the name list of the loaded program for |
1438 | the symbols g++ uses for static constructors and destructors. | |
4e81a331 RS |
1439 | |
1440 | The constructor table begins at __CTOR_LIST__ and contains a count | |
1441 | of the number of pointers (or -1 if the constructors are built in a | |
1442 | separate section by the linker), followed by the pointers to the | |
1443 | constructor functions, terminated with a null pointer. The | |
1444 | destructor table has the same format, and begins at __DTOR_LIST__. */ | |
1445 | ||
1446 | static void | |
1447 | scan_prog_file (prog_name, which_pass) | |
1448 | char *prog_name; | |
1449 | enum pass which_pass; | |
1450 | { | |
ed5b9462 RS |
1451 | void (*int_handler) (); |
1452 | void (*quit_handler) (); | |
4e81a331 RS |
1453 | char *nm_argv[4]; |
1454 | int pid; | |
1455 | int argc = 0; | |
1456 | int pipe_fd[2]; | |
1457 | char *p, buf[1024]; | |
1458 | FILE *inf; | |
1459 | ||
1460 | if (which_pass != PASS_FIRST) | |
1461 | return; | |
1462 | ||
bb59f9a6 RS |
1463 | /* If we don't have an `nm', complain. */ |
1464 | if (nm_file_name == 0) | |
1465 | fatal ("cannot find `nm'"); | |
1466 | ||
ed5b9462 | 1467 | nm_argv[argc++] = "nm"; |
4e81a331 | 1468 | if (NM_FLAGS[0] != '\0') |
ed5b9462 | 1469 | nm_argv[argc++] = NM_FLAGS; |
4e81a331 | 1470 | |
ed5b9462 RS |
1471 | nm_argv[argc++] = prog_name; |
1472 | nm_argv[argc++] = (char *)0; | |
4e81a331 RS |
1473 | |
1474 | if (pipe (pipe_fd) < 0) | |
1475 | fatal_perror ("pipe"); | |
1476 | ||
1477 | inf = fdopen (pipe_fd[0], "r"); | |
1478 | if (inf == (FILE *)0) | |
1479 | fatal_perror ("fdopen"); | |
1480 | ||
1481 | /* Trace if needed. */ | |
1482 | if (vflag) | |
1483 | { | |
1484 | char **p_argv; | |
1485 | char *str; | |
1486 | ||
1487 | fprintf (stderr, "%s", nm_file_name); | |
1488 | for (p_argv = &nm_argv[1]; (str = *p_argv) != (char *)0; p_argv++) | |
1489 | fprintf (stderr, " %s", str); | |
1490 | ||
1491 | fprintf (stderr, "\n"); | |
1492 | } | |
1493 | ||
1494 | fflush (stdout); | |
1495 | fflush (stderr); | |
1496 | ||
1497 | /* Spawn child nm on pipe */ | |
1498 | pid = vfork (); | |
1499 | if (pid == -1) | |
cf0c751a JW |
1500 | { |
1501 | #ifdef vfork | |
1502 | fatal_perror ("fork"); | |
1503 | #else | |
1504 | fatal_perror ("vfork"); | |
1505 | #endif | |
1506 | } | |
4e81a331 RS |
1507 | |
1508 | if (pid == 0) /* child context */ | |
1509 | { | |
1510 | /* setup stdout */ | |
1511 | if (dup2 (pipe_fd[1], 1) < 0) | |
1fab8e81 | 1512 | fatal_perror ("dup2 (%d, 1)", pipe_fd[1]); |
4e81a331 RS |
1513 | |
1514 | if (close (pipe_fd[0]) < 0) | |
1fab8e81 | 1515 | fatal_perror ("close (%d)", pipe_fd[0]); |
4e81a331 RS |
1516 | |
1517 | if (close (pipe_fd[1]) < 0) | |
1fab8e81 | 1518 | fatal_perror ("close (%d)", pipe_fd[1]); |
4e81a331 RS |
1519 | |
1520 | execv (nm_file_name, nm_argv); | |
1fab8e81 | 1521 | fatal_perror ("executing %s", nm_file_name); |
4e81a331 RS |
1522 | } |
1523 | ||
1524 | /* Parent context from here on. */ | |
ed5b9462 | 1525 | int_handler = (void (*) ())signal (SIGINT, SIG_IGN); |
8ab861c7 | 1526 | #ifdef SIGQUIT |
ed5b9462 | 1527 | quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN); |
8ab861c7 | 1528 | #endif |
4e81a331 RS |
1529 | |
1530 | if (close (pipe_fd[1]) < 0) | |
1fab8e81 | 1531 | fatal_perror ("close (%d)", pipe_fd[1]); |
4e81a331 RS |
1532 | |
1533 | if (debug) | |
1534 | fprintf (stderr, "\nnm output with constructors/destructors.\n"); | |
1535 | ||
1536 | /* Read each line of nm output. */ | |
1537 | while (fgets (buf, sizeof buf, inf) != (char *)0) | |
1538 | { | |
1539 | int ch, ch2; | |
ed5b9462 | 1540 | char *name, *end; |
4e81a331 RS |
1541 | |
1542 | /* If it contains a constructor or destructor name, add the name | |
1543 | to the appropriate list. */ | |
1544 | ||
1545 | for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++) | |
1546 | ; | |
1547 | ||
1548 | if (ch == '\0' || ch == '\n') | |
1549 | continue; | |
ed5b9462 RS |
1550 | |
1551 | name = p; | |
1552 | /* Find the end of the symbol name. | |
1553 | Don't include `|', because Encore nm can tack that on the end. */ | |
1554 | for (end = p; (ch2 = *end) != '\0' && !isspace (ch2) && ch2 != '|'; | |
1555 | end++) | |
1556 | continue; | |
4e81a331 RS |
1557 | |
1558 | *end = '\0'; | |
ed5b9462 | 1559 | switch (is_ctor_dtor (name)) |
4e81a331 | 1560 | { |
ed5b9462 RS |
1561 | case 1: |
1562 | add_to_list (&constructors, name); | |
1563 | break; | |
4e81a331 | 1564 | |
ed5b9462 RS |
1565 | case 2: |
1566 | add_to_list (&destructors, name); | |
1567 | break; | |
4e81a331 | 1568 | |
ed5b9462 RS |
1569 | default: /* not a constructor or destructor */ |
1570 | continue; | |
4e81a331 RS |
1571 | } |
1572 | ||
4e81a331 RS |
1573 | if (debug) |
1574 | fprintf (stderr, "\t%s\n", buf); | |
1575 | } | |
1576 | ||
1577 | if (debug) | |
1578 | fprintf (stderr, "\n"); | |
1579 | ||
1580 | if (fclose (inf) != 0) | |
1581 | fatal_perror ("fclose of pipe"); | |
1582 | ||
1583 | do_wait (nm_file_name); | |
1584 | ||
1585 | signal (SIGINT, int_handler); | |
8ab861c7 | 1586 | #ifdef SIGQUIT |
4e81a331 | 1587 | signal (SIGQUIT, quit_handler); |
8ab861c7 | 1588 | #endif |
4e81a331 RS |
1589 | } |
1590 | ||
ed5b9462 RS |
1591 | #endif /* OBJECT_FORMAT_NONE */ |
1592 | ||
1593 | \f | |
1594 | /* | |
1595 | * COFF specific stuff. | |
1596 | */ | |
1597 | ||
1598 | #ifdef OBJECT_FORMAT_COFF | |
1599 | ||
1600 | #if defined(EXTENDED_COFF) | |
17704846 JW |
1601 | # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax) |
1602 | # define GCC_SYMENT SYMR | |
1603 | # define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText) | |
1604 | # define GCC_SYMINC(X) (1) | |
1605 | # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax) | |
1606 | # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0) | |
ed5b9462 | 1607 | #else |
17704846 JW |
1608 | # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms) |
1609 | # define GCC_SYMENT SYMENT | |
ed5b9462 RS |
1610 | # define GCC_OK_SYMBOL(X) \ |
1611 | (((X).n_sclass == C_EXT) && \ | |
1612 | (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \ | |
1613 | ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))) | |
17704846 JW |
1614 | # define GCC_SYMINC(X) ((X).n_numaux+1) |
1615 | # define GCC_SYMZERO(X) 0 | |
1616 | # define GCC_CHECK_HDR(X) (1) | |
ed5b9462 RS |
1617 | #endif |
1618 | ||
1619 | extern char *ldgetname (); | |
1620 | ||
1621 | /* COFF version to scan the name list of the loaded program for | |
1622 | the symbols g++ uses for static constructors and destructors. | |
1623 | ||
1624 | The constructor table begins at __CTOR_LIST__ and contains a count | |
1625 | of the number of pointers (or -1 if the constructors are built in a | |
1626 | separate section by the linker), followed by the pointers to the | |
1627 | constructor functions, terminated with a null pointer. The | |
1628 | destructor table has the same format, and begins at __DTOR_LIST__. */ | |
1629 | ||
1630 | static void | |
1631 | scan_prog_file (prog_name, which_pass) | |
1632 | char *prog_name; | |
1633 | enum pass which_pass; | |
1634 | { | |
f3c3d3df | 1635 | LDFILE *ldptr = NULL; |
ed5b9462 RS |
1636 | int sym_index, sym_count; |
1637 | ||
1638 | if (which_pass != PASS_FIRST) | |
1639 | return; | |
1640 | ||
1641 | if ((ldptr = ldopen (prog_name, ldptr)) == NULL) | |
1642 | fatal ("%s: can't open as COFF file", prog_name); | |
1643 | ||
e99467d2 | 1644 | if (!MY_ISCOFF (HEADER (ldptr).f_magic)) |
ed5b9462 RS |
1645 | fatal ("%s: not a COFF file", prog_name); |
1646 | ||
17704846 | 1647 | if (GCC_CHECK_HDR (ldptr)) |
ed5b9462 | 1648 | { |
17704846 JW |
1649 | sym_count = GCC_SYMBOLS (ldptr); |
1650 | sym_index = GCC_SYMZERO (ldptr); | |
1651 | while (sym_index < sym_count) | |
1652 | { | |
1653 | GCC_SYMENT symbol; | |
ed5b9462 | 1654 | |
17704846 JW |
1655 | if (ldtbread (ldptr, sym_index, &symbol) <= 0) |
1656 | break; | |
1657 | sym_index += GCC_SYMINC (symbol); | |
ed5b9462 | 1658 | |
17704846 JW |
1659 | if (GCC_OK_SYMBOL (symbol)) |
1660 | { | |
1661 | char *name; | |
ed5b9462 | 1662 | |
17704846 JW |
1663 | if ((name = ldgetname (ldptr, &symbol)) == NULL) |
1664 | continue; /* should never happen */ | |
ed5b9462 RS |
1665 | |
1666 | #ifdef _AIX | |
17704846 JW |
1667 | /* All AIX function names begin with a dot. */ |
1668 | if (*name++ != '.') | |
1669 | continue; | |
ed5b9462 RS |
1670 | #endif |
1671 | ||
17704846 JW |
1672 | switch (is_ctor_dtor (name)) |
1673 | { | |
1674 | case 1: | |
1675 | add_to_list (&constructors, name); | |
1676 | break; | |
ed5b9462 | 1677 | |
17704846 JW |
1678 | case 2: |
1679 | add_to_list (&destructors, name); | |
1680 | break; | |
ed5b9462 | 1681 | |
17704846 JW |
1682 | default: /* not a constructor or destructor */ |
1683 | continue; | |
1684 | } | |
ed5b9462 RS |
1685 | |
1686 | #if !defined(EXTENDED_COFF) | |
17704846 JW |
1687 | if (debug) |
1688 | fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n", | |
1689 | symbol.n_scnum, symbol.n_sclass, | |
1690 | (symbol.n_type ? "0" : ""), symbol.n_type, | |
1691 | name); | |
ed5b9462 | 1692 | #else |
17704846 JW |
1693 | if (debug) |
1694 | fprintf (stderr, "\tiss = %5d, value = %5d, index = %5d, name = %s\n", | |
1695 | symbol.iss, symbol.value, symbol.index, name); | |
ed5b9462 | 1696 | #endif |
17704846 | 1697 | } |
ed5b9462 RS |
1698 | } |
1699 | } | |
1700 | ||
1701 | (void) ldclose(ldptr); | |
1702 | } | |
1703 | ||
1704 | #endif /* OBJECT_FORMAT_COFF */ | |
4e81a331 RS |
1705 | |
1706 | \f | |
1707 | /* | |
1708 | * OSF/rose specific stuff. | |
1709 | */ | |
1710 | ||
1711 | #ifdef OBJECT_FORMAT_ROSE | |
1712 | ||
1713 | /* Union of the various load commands */ | |
1714 | ||
1715 | typedef union load_union | |
1716 | { | |
1717 | ldc_header_t hdr; /* common header */ | |
1718 | load_cmd_map_command_t map; /* map indexing other load cmds */ | |
ed5b9462 | 1719 | interpreter_command_t iprtr; /* interpreter pathname */ |
4e81a331 RS |
1720 | strings_command_t str; /* load commands strings section */ |
1721 | region_command_t region; /* region load command */ | |
1722 | reloc_command_t reloc; /* relocation section */ | |
1723 | package_command_t pkg; /* package load command */ | |
1724 | symbols_command_t sym; /* symbol sections */ | |
1725 | entry_command_t ent; /* program start section */ | |
1726 | gen_info_command_t info; /* object information */ | |
1727 | func_table_command_t func; /* function constructors/destructors */ | |
1728 | } load_union_t; | |
1729 | ||
1730 | /* Structure to point to load command and data section in memory. */ | |
1731 | ||
1732 | typedef struct load_all | |
1733 | { | |
1734 | load_union_t *load; /* load command */ | |
1735 | char *section; /* pointer to section */ | |
1736 | } load_all_t; | |
1737 | ||
1738 | /* Structure to contain information about a file mapped into memory. */ | |
1739 | ||
1740 | struct file_info | |
1741 | { | |
1742 | char *start; /* start of map */ | |
1743 | char *name; /* filename */ | |
1744 | long size; /* size of the file */ | |
1745 | long rounded_size; /* size rounded to page boundary */ | |
1746 | int fd; /* file descriptor */ | |
1747 | int rw; /* != 0 if opened read/write */ | |
1748 | int use_mmap; /* != 0 if mmap'ed */ | |
1749 | }; | |
1750 | ||
ed5b9462 | 1751 | extern int decode_mach_o_hdr (); |
ed5b9462 | 1752 | extern int encode_mach_o_hdr (); |
4e81a331 | 1753 | |
4d1a011f RK |
1754 | static void add_func_table PROTO((mo_header_t *, load_all_t *, |
1755 | symbol_info_t *, int)); | |
1756 | static void print_header PROTO((mo_header_t *)); | |
1757 | static void print_load_command PROTO((load_union_t*, size_t, int)); | |
1758 | static void bad_header PROTO((int)); | |
357a98f1 | 1759 | static struct file_info *read_file PROTO((char *, int, int)); |
4d1a011f | 1760 | static void end_file PROTO((struct file_info *)); |
4e81a331 RS |
1761 | \f |
1762 | /* OSF/rose specific version to scan the name list of the loaded | |
1763 | program for the symbols g++ uses for static constructors and | |
1764 | destructors. | |
1765 | ||
1766 | The constructor table begins at __CTOR_LIST__ and contains a count | |
1767 | of the number of pointers (or -1 if the constructors are built in a | |
1768 | separate section by the linker), followed by the pointers to the | |
1769 | constructor functions, terminated with a null pointer. The | |
1770 | destructor table has the same format, and begins at __DTOR_LIST__. */ | |
1771 | ||
1772 | static void | |
1773 | scan_prog_file (prog_name, which_pass) | |
1774 | char *prog_name; | |
1775 | enum pass which_pass; | |
1776 | { | |
1777 | char *obj; | |
1778 | mo_header_t hdr; | |
1779 | load_all_t *load_array; | |
1780 | load_all_t *load_end; | |
1781 | load_all_t *load_cmd; | |
1782 | int symbol_load_cmds; | |
1783 | off_t offset; | |
1784 | int i; | |
1785 | int num_syms; | |
1786 | int status; | |
1787 | char *str_sect; | |
1788 | struct file_info *obj_file; | |
1789 | int prog_fd; | |
1790 | mo_lcid_t cmd_strings = -1; | |
1791 | symbol_info_t *main_sym = 0; | |
1792 | int rw = (which_pass != PASS_FIRST); | |
1793 | ||
1794 | prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY); | |
1795 | if (prog_fd < 0) | |
1fab8e81 | 1796 | fatal_perror ("can't read %s", prog_name); |
4e81a331 RS |
1797 | |
1798 | obj_file = read_file (prog_name, prog_fd, rw); | |
1799 | obj = obj_file->start; | |
1800 | ||
1801 | status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr); | |
1802 | if (status != MO_HDR_CONV_SUCCESS) | |
1803 | bad_header (status); | |
1804 | ||
1805 | ||
1806 | /* Do some basic sanity checks. Note we explicitly use the big endian magic number, | |
1807 | since the hardware will automatically swap bytes for us on loading little endian | |
1808 | integers. */ | |
1809 | ||
1810 | #ifndef CROSS_COMPILE | |
1811 | if (hdr.moh_magic != MOH_MAGIC_MSB | |
1812 | || hdr.moh_header_version != MOH_HEADER_VERSION | |
1813 | || hdr.moh_byte_order != OUR_BYTE_ORDER | |
1814 | || hdr.moh_data_rep_id != OUR_DATA_REP_ID | |
1815 | || hdr.moh_cpu_type != OUR_CPU_TYPE | |
1816 | || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE | |
1817 | || hdr.moh_vendor_type != OUR_VENDOR_TYPE) | |
1818 | { | |
1fab8e81 | 1819 | fatal ("incompatibilities between object file & expected values"); |
4e81a331 RS |
1820 | } |
1821 | #endif | |
1822 | ||
1823 | if (debug) | |
1824 | print_header (&hdr); | |
1825 | ||
1826 | offset = hdr.moh_first_cmd_off; | |
1827 | load_end = load_array | |
1828 | = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2); | |
1829 | ||
1830 | /* Build array of load commands, calculating the offsets */ | |
1831 | for (i = 0; i < hdr.moh_n_load_cmds; i++) | |
1832 | { | |
1833 | load_union_t *load_hdr; /* load command header */ | |
1834 | ||
1835 | load_cmd = load_end++; | |
1836 | load_hdr = (load_union_t *) (obj + offset); | |
1837 | ||
f72aed24 | 1838 | /* If modifying the program file, copy the header. */ |
4e81a331 RS |
1839 | if (rw) |
1840 | { | |
1841 | load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size); | |
4c9a05bc | 1842 | bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size); |
4e81a331 RS |
1843 | load_hdr = ptr; |
1844 | ||
1845 | /* null out old command map, because we will rewrite at the end. */ | |
1846 | if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP) | |
1847 | { | |
1848 | cmd_strings = ptr->map.lcm_ld_cmd_strings; | |
1849 | ptr->hdr.ldci_cmd_type = LDC_UNDEFINED; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | load_cmd->load = load_hdr; | |
1854 | if (load_hdr->hdr.ldci_section_off > 0) | |
1855 | load_cmd->section = obj + load_hdr->hdr.ldci_section_off; | |
1856 | ||
1857 | if (debug) | |
1858 | print_load_command (load_hdr, offset, i); | |
1859 | ||
1860 | offset += load_hdr->hdr.ldci_cmd_size; | |
1861 | } | |
1862 | ||
1863 | /* If the last command is the load command map and is not undefined, | |
1864 | decrement the count of load commands. */ | |
1865 | if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED) | |
1866 | { | |
1867 | load_end--; | |
1868 | hdr.moh_n_load_cmds--; | |
1869 | } | |
1870 | ||
1871 | /* Go through and process each symbol table section. */ | |
1872 | symbol_load_cmds = 0; | |
1873 | for (load_cmd = load_array; load_cmd < load_end; load_cmd++) | |
1874 | { | |
1875 | load_union_t *load_hdr = load_cmd->load; | |
1876 | ||
1877 | if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS) | |
1878 | { | |
1879 | symbol_load_cmds++; | |
1880 | ||
1881 | if (debug) | |
1882 | { | |
ed5b9462 | 1883 | char *kind = "unknown"; |
4e81a331 RS |
1884 | |
1885 | switch (load_hdr->sym.symc_kind) | |
1886 | { | |
1887 | case SYMC_IMPORTS: kind = "imports"; break; | |
1888 | case SYMC_DEFINED_SYMBOLS: kind = "defined"; break; | |
1889 | case SYMC_STABS: kind = "stabs"; break; | |
1890 | } | |
1891 | ||
1892 | fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n", | |
1893 | symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind); | |
1894 | } | |
1895 | ||
1896 | if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS) | |
1897 | continue; | |
1898 | ||
ed5b9462 | 1899 | str_sect = load_array[load_hdr->sym.symc_strings_section].section; |
4e81a331 RS |
1900 | if (str_sect == (char *)0) |
1901 | fatal ("string section missing"); | |
1902 | ||
1903 | if (load_cmd->section == (char *)0) | |
1904 | fatal ("section pointer missing"); | |
1905 | ||
1906 | num_syms = load_hdr->sym.symc_nentries; | |
1907 | for (i = 0; i < num_syms; i++) | |
1908 | { | |
1909 | symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i; | |
1910 | char *name = sym->si_name.symbol_name + str_sect; | |
4e81a331 RS |
1911 | |
1912 | if (name[0] != '_') | |
1913 | continue; | |
1914 | ||
4e81a331 RS |
1915 | if (rw) |
1916 | { | |
d6cf3187 RS |
1917 | char *n = name + strlen (name) - strlen (NAME__MAIN); |
1918 | ||
1919 | if ((n - name) < 0 || strcmp (n, NAME__MAIN)) | |
4e81a331 | 1920 | continue; |
d6cf3187 RS |
1921 | while (n != name) |
1922 | if (*--n != '_') | |
1923 | continue; | |
4e81a331 RS |
1924 | |
1925 | main_sym = sym; | |
1926 | } | |
ed5b9462 | 1927 | else |
4e81a331 | 1928 | { |
ed5b9462 RS |
1929 | switch (is_ctor_dtor (name)) |
1930 | { | |
1931 | case 1: | |
1932 | add_to_list (&constructors, name); | |
1933 | break; | |
1934 | ||
1935 | case 2: | |
1936 | add_to_list (&destructors, name); | |
1937 | break; | |
1938 | ||
1939 | default: /* not a constructor or destructor */ | |
1940 | continue; | |
1941 | } | |
4e81a331 RS |
1942 | } |
1943 | ||
4e81a331 RS |
1944 | if (debug) |
1945 | fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n", | |
1946 | sym->si_type, sym->si_sc_type, sym->si_flags, name); | |
1947 | } | |
1948 | } | |
1949 | } | |
1950 | ||
1951 | if (symbol_load_cmds == 0) | |
1fab8e81 | 1952 | fatal ("no symbol table found"); |
4e81a331 RS |
1953 | |
1954 | /* Update the program file now, rewrite header and load commands. At present, | |
1955 | we assume that there is enough space after the last load command to insert | |
1956 | one more. Since the first section written out is page aligned, and the | |
1957 | number of load commands is small, this is ok for the present. */ | |
1958 | ||
1959 | if (rw) | |
1960 | { | |
1961 | load_union_t *load_map; | |
1962 | size_t size; | |
1963 | ||
1964 | if (cmd_strings == -1) | |
1fab8e81 RS |
1965 | fatal ("no cmd_strings found"); |
1966 | ||
1967 | /* Add __main to initializer list. | |
1968 | If we are building a program instead of a shared library, don't | |
1969 | do anything, since in the current version, you cannot do mallocs | |
1970 | and such in the constructors. */ | |
4e81a331 | 1971 | |
1fab8e81 RS |
1972 | if (main_sym != (symbol_info_t *)0 |
1973 | && ((hdr.moh_flags & MOH_EXECABLE_F) == 0)) | |
4e81a331 RS |
1974 | add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION); |
1975 | ||
1976 | if (debug) | |
1977 | fprintf (stderr, "\nUpdating header and load commands.\n\n"); | |
1978 | ||
1979 | hdr.moh_n_load_cmds++; | |
1980 | size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1)); | |
1981 | ||
1982 | /* Create new load command map. */ | |
1983 | if (debug) | |
1984 | fprintf (stderr, "load command map, %d cmds, new size %ld.\n", | |
1985 | (int)hdr.moh_n_load_cmds, (long)size); | |
1986 | ||
1987 | load_map = (load_union_t *) xcalloc (1, size); | |
1988 | load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP; | |
1989 | load_map->map.ldc_header.ldci_cmd_size = size; | |
1990 | load_map->map.lcm_ld_cmd_strings = cmd_strings; | |
1991 | load_map->map.lcm_nentries = hdr.moh_n_load_cmds; | |
1992 | load_array[hdr.moh_n_load_cmds-1].load = load_map; | |
1993 | ||
1994 | offset = hdr.moh_first_cmd_off; | |
1995 | for (i = 0; i < hdr.moh_n_load_cmds; i++) | |
1996 | { | |
1997 | load_map->map.lcm_map[i] = offset; | |
1998 | if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP) | |
1999 | hdr.moh_load_map_cmd_off = offset; | |
2000 | ||
2001 | offset += load_array[i].load->hdr.ldci_cmd_size; | |
2002 | } | |
2003 | ||
2004 | hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR; | |
2005 | ||
2006 | if (debug) | |
2007 | print_header (&hdr); | |
2008 | ||
2009 | /* Write header */ | |
2010 | status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR); | |
2011 | if (status != MO_HDR_CONV_SUCCESS) | |
2012 | bad_header (status); | |
2013 | ||
2014 | if (debug) | |
2015 | fprintf (stderr, "writing load commands.\n\n"); | |
2016 | ||
2017 | /* Write load commands */ | |
2018 | offset = hdr.moh_first_cmd_off; | |
2019 | for (i = 0; i < hdr.moh_n_load_cmds; i++) | |
2020 | { | |
2021 | load_union_t *load_hdr = load_array[i].load; | |
2022 | size_t size = load_hdr->hdr.ldci_cmd_size; | |
2023 | ||
2024 | if (debug) | |
2025 | print_load_command (load_hdr, offset, i); | |
2026 | ||
4c9a05bc | 2027 | bcopy ((char *)load_hdr, (char *)(obj + offset), size); |
4e81a331 RS |
2028 | offset += size; |
2029 | } | |
2030 | } | |
2031 | ||
2032 | end_file (obj_file); | |
2033 | ||
2034 | if (close (prog_fd)) | |
1fab8e81 | 2035 | fatal_perror ("closing %s", prog_name); |
4e81a331 RS |
2036 | |
2037 | if (debug) | |
2038 | fprintf (stderr, "\n"); | |
2039 | } | |
2040 | ||
2041 | \f | |
2042 | /* Add a function table to the load commands to call a function | |
ed5b9462 | 2043 | on initiation or termination of the process. */ |
4e81a331 RS |
2044 | |
2045 | static void | |
2046 | add_func_table (hdr_p, load_array, sym, type) | |
2047 | mo_header_t *hdr_p; /* pointer to global header */ | |
2048 | load_all_t *load_array; /* array of ptrs to load cmds */ | |
2049 | symbol_info_t *sym; /* pointer to symbol entry */ | |
2050 | int type; /* fntc_type value */ | |
2051 | { | |
2052 | /* Add a new load command. */ | |
2053 | int num_cmds = ++hdr_p->moh_n_load_cmds; | |
2054 | int load_index = num_cmds - 1; | |
2055 | size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t); | |
2056 | load_union_t *ptr = xcalloc (1, size); | |
2057 | load_all_t *load_cmd; | |
2058 | int i; | |
2059 | ||
2060 | /* Set the unresolved address bit in the header to force the loader to be | |
2061 | used, since kernel exec does not call the initialization functions. */ | |
2062 | hdr_p->moh_flags |= MOH_UNRESOLVED_F; | |
2063 | ||
2064 | load_cmd = &load_array[load_index]; | |
2065 | load_cmd->load = ptr; | |
2066 | load_cmd->section = (char *)0; | |
2067 | ||
2068 | /* Fill in func table load command. */ | |
2069 | ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE; | |
2070 | ptr->func.ldc_header.ldci_cmd_size = size; | |
2071 | ptr->func.ldc_header.ldci_section_off = 0; | |
2072 | ptr->func.ldc_header.ldci_section_len = 0; | |
2073 | ptr->func.fntc_type = type; | |
2074 | ptr->func.fntc_nentries = 1; | |
2075 | ||
2076 | /* copy address, turn it from abs. address to (region,offset) if necessary. */ | |
2077 | /* Is the symbol already expressed as (region, offset)? */ | |
2078 | if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0) | |
2079 | { | |
2080 | ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid; | |
2081 | ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff; | |
2082 | } | |
2083 | ||
2084 | /* If not, figure out which region it's in. */ | |
2085 | else | |
2086 | { | |
2087 | mo_vm_addr_t addr = sym->si_value.abs_val; | |
2088 | int found = 0; | |
2089 | ||
2090 | for (i = 0; i < load_index; i++) | |
2091 | { | |
2092 | if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION) | |
2093 | { | |
2094 | region_command_t *region_ptr = &load_array[i].load->region; | |
2095 | ||
2096 | if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0 | |
2097 | && addr >= region_ptr->regc_addr.vm_addr | |
2098 | && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size) | |
2099 | { | |
2100 | ptr->func.fntc_entry_loc[0].adr_lcid = i; | |
2101 | ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr; | |
2102 | found++; | |
2103 | break; | |
2104 | } | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | if (!found) | |
2109 | fatal ("could not convert 0x%l.8x into a region", addr); | |
2110 | } | |
2111 | ||
2112 | if (debug) | |
2113 | fprintf (stderr, | |
2114 | "%s function, region %d, offset = %ld (0x%.8lx)\n", | |
2115 | (type == FNTC_INITIALIZATION) ? "init" : "term", | |
2116 | (int)ptr->func.fntc_entry_loc[i].adr_lcid, | |
2117 | (long)ptr->func.fntc_entry_loc[i].adr_sctoff, | |
2118 | (long)ptr->func.fntc_entry_loc[i].adr_sctoff); | |
2119 | ||
2120 | } | |
2121 | ||
2122 | \f | |
2123 | /* Print the global header for an OSF/rose object. */ | |
2124 | ||
2125 | static void | |
2126 | print_header (hdr_ptr) | |
2127 | mo_header_t *hdr_ptr; | |
2128 | { | |
2129 | fprintf (stderr, "\nglobal header:\n"); | |
2130 | fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic); | |
2131 | fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version); | |
2132 | fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version); | |
2133 | fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version); | |
2134 | fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size); | |
2135 | fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order); | |
2136 | fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id); | |
2137 | fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type); | |
2138 | fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype); | |
2139 | fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type); | |
2140 | fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off); | |
2141 | fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off); | |
2142 | fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds); | |
2143 | fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds); | |
2144 | fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags); | |
2145 | ||
2146 | if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F) | |
2147 | fprintf (stderr, ", relocatable"); | |
2148 | ||
2149 | if (hdr_ptr->moh_flags & MOH_LINKABLE_F) | |
2150 | fprintf (stderr, ", linkable"); | |
2151 | ||
2152 | if (hdr_ptr->moh_flags & MOH_EXECABLE_F) | |
2153 | fprintf (stderr, ", execable"); | |
2154 | ||
2155 | if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F) | |
2156 | fprintf (stderr, ", executable"); | |
2157 | ||
2158 | if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F) | |
2159 | fprintf (stderr, ", unresolved"); | |
2160 | ||
2161 | fprintf (stderr, "\n\n"); | |
2162 | return; | |
2163 | } | |
2164 | ||
2165 | \f | |
2166 | /* Print a short summary of a load command. */ | |
2167 | ||
2168 | static void | |
2169 | print_load_command (load_hdr, offset, number) | |
2170 | load_union_t *load_hdr; | |
2171 | size_t offset; | |
2172 | int number; | |
2173 | { | |
2174 | mo_long_t type = load_hdr->hdr.ldci_cmd_type; | |
2175 | char *type_str = (char *)0; | |
2176 | ||
2177 | switch (type) | |
2178 | { | |
2179 | case LDC_UNDEFINED: type_str = "UNDEFINED"; break; | |
2180 | case LDC_CMD_MAP: type_str = "CMD_MAP"; break; | |
2181 | case LDC_INTERPRETER: type_str = "INTERPRETER"; break; | |
2182 | case LDC_STRINGS: type_str = "STRINGS"; break; | |
2183 | case LDC_REGION: type_str = "REGION"; break; | |
2184 | case LDC_RELOC: type_str = "RELOC"; break; | |
2185 | case LDC_PACKAGE: type_str = "PACKAGE"; break; | |
2186 | case LDC_SYMBOLS: type_str = "SYMBOLS"; break; | |
2187 | case LDC_ENTRY: type_str = "ENTRY"; break; | |
2188 | case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break; | |
2189 | case LDC_GEN_INFO: type_str = "GEN_INFO"; break; | |
2190 | } | |
2191 | ||
2192 | fprintf (stderr, | |
2193 | "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx", | |
2194 | number, | |
2195 | (long) load_hdr->hdr.ldci_cmd_size, | |
2196 | (long) offset, | |
2197 | (long) load_hdr->hdr.ldci_section_off, | |
2198 | (long) load_hdr->hdr.ldci_section_len); | |
2199 | ||
2200 | if (type_str == (char *)0) | |
2201 | fprintf (stderr, ", ty: unknown (%ld)\n", (long) type); | |
2202 | ||
2203 | else if (type != LDC_REGION) | |
2204 | fprintf (stderr, ", ty: %s\n", type_str); | |
2205 | ||
2206 | else | |
2207 | { | |
2208 | char *region = ""; | |
2209 | switch (load_hdr->region.regc_usage_type) | |
2210 | { | |
2211 | case REG_TEXT_T: region = ", .text"; break; | |
2212 | case REG_DATA_T: region = ", .data"; break; | |
2213 | case REG_BSS_T: region = ", .bss"; break; | |
2214 | case REG_GLUE_T: region = ", .glue"; break; | |
2215 | #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/ | |
2216 | case REG_RDATA_T: region = ", .rdata"; break; | |
2217 | case REG_SDATA_T: region = ", .sdata"; break; | |
2218 | case REG_SBSS_T: region = ", .sbss"; break; | |
2219 | #endif | |
2220 | } | |
2221 | ||
2222 | fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n", | |
2223 | type_str, | |
2224 | (long) load_hdr->region.regc_vm_addr, | |
2225 | (long) load_hdr->region.regc_vm_size, | |
2226 | region); | |
2227 | } | |
2228 | ||
2229 | return; | |
2230 | } | |
2231 | ||
2232 | \f | |
2233 | /* Fatal error when {en,de}code_mach_o_header fails. */ | |
2234 | ||
2235 | static void | |
2236 | bad_header (status) | |
2237 | int status; | |
2238 | { | |
2239 | char *msg = (char *)0; | |
2240 | ||
2241 | switch (status) | |
2242 | { | |
2243 | case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break; | |
2244 | case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break; | |
2245 | case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break; | |
2246 | case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break; | |
2247 | case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break; | |
2248 | case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break; | |
2249 | } | |
2250 | ||
2251 | if (msg == (char *)0) | |
2252 | fatal ("unknown {de,en}code_mach_o_hdr return value %d", status); | |
2253 | else | |
2254 | fatal ("%s", msg); | |
2255 | } | |
2256 | ||
2257 | \f | |
2258 | /* Read a file into a memory buffer. */ | |
2259 | ||
2260 | static struct file_info * | |
2261 | read_file (name, fd, rw) | |
2262 | char *name; /* filename */ | |
2263 | int fd; /* file descriptor */ | |
2264 | int rw; /* read/write */ | |
2265 | { | |
2266 | struct stat stat_pkt; | |
2267 | struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1); | |
2268 | #ifdef USE_MMAP | |
2269 | static int page_size; | |
2270 | #endif | |
2271 | ||
2272 | if (fstat (fd, &stat_pkt) < 0) | |
2273 | fatal_perror ("fstat %s", name); | |
2274 | ||
2275 | p->name = name; | |
2276 | p->size = stat_pkt.st_size; | |
2277 | p->rounded_size = stat_pkt.st_size; | |
2278 | p->fd = fd; | |
2279 | p->rw = rw; | |
2280 | ||
2281 | #ifdef USE_MMAP | |
2282 | if (debug) | |
2283 | fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only"); | |
2284 | ||
2285 | if (page_size == 0) | |
2286 | page_size = sysconf (_SC_PAGE_SIZE); | |
2287 | ||
2288 | p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size; | |
2289 | p->start = mmap ((caddr_t)0, | |
2290 | (rw) ? p->rounded_size : p->size, | |
2291 | (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ, | |
2292 | MAP_FILE | MAP_VARIABLE | MAP_SHARED, | |
2293 | fd, | |
2294 | 0L); | |
2295 | ||
2296 | if (p->start != (char *)0 && p->start != (char *)-1) | |
2297 | p->use_mmap = 1; | |
2298 | ||
2299 | else | |
2300 | #endif /* USE_MMAP */ | |
2301 | { | |
2302 | long len; | |
2303 | ||
2304 | if (debug) | |
2305 | fprintf (stderr, "read %s\n", name); | |
2306 | ||
2307 | p->use_mmap = 0; | |
2308 | p->start = xmalloc (p->size); | |
2309 | if (lseek (fd, 0L, SEEK_SET) < 0) | |
2310 | fatal_perror ("lseek to 0 on %s", name); | |
2311 | ||
2312 | len = read (fd, p->start, p->size); | |
2313 | if (len < 0) | |
2314 | fatal_perror ("read %s", name); | |
2315 | ||
2316 | if (len != p->size) | |
2317 | fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name); | |
2318 | } | |
2319 | ||
2320 | return p; | |
2321 | } | |
4e81a331 RS |
2322 | \f |
2323 | /* Do anything necessary to write a file back from memory. */ | |
2324 | ||
2325 | static void | |
2326 | end_file (ptr) | |
2327 | struct file_info *ptr; /* file information block */ | |
2328 | { | |
2329 | #ifdef USE_MMAP | |
2330 | if (ptr->use_mmap) | |
2331 | { | |
2332 | if (ptr->rw) | |
2333 | { | |
2334 | if (debug) | |
2335 | fprintf (stderr, "msync %s\n", ptr->name); | |
2336 | ||
2337 | if (msync (ptr->start, ptr->rounded_size, MS_ASYNC)) | |
2338 | fatal_perror ("msync %s", ptr->name); | |
2339 | } | |
2340 | ||
2341 | if (debug) | |
2342 | fprintf (stderr, "munmap %s\n", ptr->name); | |
2343 | ||
2344 | if (munmap (ptr->start, ptr->size)) | |
2345 | fatal_perror ("munmap %s", ptr->name); | |
2346 | } | |
2347 | else | |
2348 | #endif /* USE_MMAP */ | |
2349 | { | |
2350 | if (ptr->rw) | |
2351 | { | |
2352 | long len; | |
2353 | ||
2354 | if (debug) | |
2355 | fprintf (stderr, "write %s\n", ptr->name); | |
2356 | ||
2357 | if (lseek (ptr->fd, 0L, SEEK_SET) < 0) | |
2358 | fatal_perror ("lseek to 0 on %s", ptr->name); | |
2359 | ||
2360 | len = write (ptr->fd, ptr->start, ptr->size); | |
2361 | if (len < 0) | |
2362 | fatal_perror ("read %s", ptr->name); | |
2363 | ||
2364 | if (len != ptr->size) | |
2365 | fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name); | |
2366 | } | |
2367 | ||
2368 | free ((generic *)ptr->start); | |
2369 | } | |
2370 | ||
2371 | free ((generic *)ptr); | |
2372 | } | |
2373 | ||
2374 | #endif /* OBJECT_FORMAT_ROSE */ |