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1.1 root 1: /* Collect static initialization info into data structures
2: that can be traversed by C++ initialization and finalization
3: routines.
4:
1.1.1.7 ! root 5: Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
1.1 root 6: Contributed by Chris Smith ([email protected]).
7: Heavily modified by Michael Meissner ([email protected]),
8: Per Bothner ([email protected]), and John Gilmore ([email protected]).
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 <ctype.h>
32: #include <errno.h>
33: #include <signal.h>
34: #include <sys/file.h>
35: #include <sys/stat.h>
1.1.1.3 root 36: #ifdef NO_WAIT_H
1.1 root 37: #include <sys/wait.h>
1.1.1.3 root 38: #endif
1.1 root 39:
40: #ifndef errno
41: extern int errno;
42: #endif
43:
1.1.1.7 ! root 44: #if defined(bsd4_4) || defined(__NetBSD__)
1.1.1.6 root 45: extern const char *const sys_errlist[];
46: #else
47: extern char *sys_errlist[];
48: #endif
49: extern int sys_nerr;
50:
1.1 root 51: #define COLLECT
52:
53: #include "config.h"
54:
55: #ifndef __STDC__
56: #define generic char
57: #define const
58:
59: #else
60: #define generic void
61: #endif
62:
1.1.1.2 root 63: #ifdef USG
64: #define vfork fork
65: #endif
66:
1.1.1.6 root 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:
1.1.1.2 root 76: #ifndef R_OK
77: #define R_OK 4
78: #define W_OK 2
79: #define X_OK 1
80: #endif
81:
1.1.1.7 ! root 82: #ifndef WIFSIGNALED
! 83: #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
! 84: #endif
! 85: #ifndef WTERMSIG
! 86: #define WTERMSIG(S) ((S) & 0x7f)
! 87: #endif
! 88: #ifndef WIFEXITED
! 89: #define WIFEXITED(S) (((S) & 0xff) == 0)
! 90: #endif
! 91: #ifndef WEXITSTATUS
! 92: #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
! 93: #endif
! 94:
1.1.1.2 root 95: /* On MSDOS, write temp files in current dir
96: because there's no place else we can expect to use. */
1.1.1.7 ! root 97: #ifdef __MSDOS__
1.1.1.2 root 98: #ifndef P_tmpdir
99: #define P_tmpdir "./"
100: #endif
101: #endif
102:
103: /* On certain systems, we have code that works by scanning the object file
104: directly. But this code uses system-specific header files and library
1.1.1.5 root 105: functions, so turn it off in a cross-compiler. Likewise, the names of
106: the utilities aren't correct for a cross-compiler; we have to hope that
107: cross-versions are in the proper directories. */
1.1.1.2 root 108:
109: #ifdef CROSS_COMPILE
110: #undef OBJECT_FORMAT_COFF
111: #undef OBJECT_FORMAT_ROSE
1.1.1.5 root 112: #undef MD_EXEC_PREFIX
113: #undef REAL_LD_FILE_NAME
114: #undef REAL_NM_FILE_NAME
115: #undef REAL_STRIP_FILE_NAME
1.1.1.2 root 116: #endif
117:
118: /* If we can't use a special method, use the ordinary one:
119: run nm to find what symbols are present.
120: In a cross-compiler, this means you need a cross nm,
121: but that isn't quite as unpleasant as special headers. */
122:
123: #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
124: #define OBJECT_FORMAT_NONE
125: #endif
126:
127: #ifdef OBJECT_FORMAT_COFF
128:
129: #include <a.out.h>
130: #include <ar.h>
131:
132: #ifdef UMAX
133: #include <sgs.h>
134: #endif
135:
1.1.1.4 root 136: /* Many versions of ldfcn.h define these. */
137: #ifdef FREAD
1.1.1.2 root 138: #undef FREAD
139: #undef FWRITE
140: #endif
141:
142: #include <ldfcn.h>
143:
1.1.1.5 root 144: /* Some systems have an ISCOFF macro, but others do not. In some cases
145: the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
146: that either do not have an ISCOFF macro in /usr/include or for those
147: where it is wrong. */
148:
1.1.1.4 root 149: #ifndef MY_ISCOFF
150: #define MY_ISCOFF(X) ISCOFF (X)
151: #endif
152:
1.1.1.2 root 153: #endif /* OBJECT_FORMAT_COFF */
154:
1.1 root 155: #ifdef OBJECT_FORMAT_ROSE
156:
157: #ifdef _OSF_SOURCE
158: #define USE_MMAP
159: #endif
160:
161: #ifdef USE_MMAP
162: #include <sys/mman.h>
163: #endif
164:
165: #include <unistd.h>
166: #include <mach_o_format.h>
167: #include <mach_o_header.h>
168: #include <mach_o_vals.h>
169: #include <mach_o_types.h>
1.1.1.2 root 170:
1.1 root 171: #endif /* OBJECT_FORMAT_ROSE */
172:
1.1.1.2 root 173: #ifdef OBJECT_FORMAT_NONE
174:
1.1 root 175: /* Default flags to pass to nm. */
176: #ifndef NM_FLAGS
177: #define NM_FLAGS "-p"
178: #endif
179:
1.1.1.2 root 180: #endif /* OBJECT_FORMAT_NONE */
1.1.1.6 root 181:
182: /* Some systems use __main in a way incompatible with its use in gcc, in these
183: cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
184: give the same symbol without quotes for an alternative entry point. You
185: must define both, or niether. */
186: #ifndef NAME__MAIN
187: #define NAME__MAIN "__main"
188: #define SYMBOL__MAIN __main
189: #endif
190:
1.1 root 191:
192: /* Linked lists of constructor and destructor names. */
193:
194: struct id
195: {
196: struct id *next;
197: int sequence;
198: char name[1];
199: };
200:
201: struct head
202: {
203: struct id *first;
204: struct id *last;
205: int number;
206: };
207:
208: /* Enumeration giving which pass this is for scanning the program file. */
209:
210: enum pass {
211: PASS_FIRST, /* without constructors */
212: PASS_SECOND /* with constructors linked in */
213: };
214:
1.1.1.2 root 215: #ifndef NO_SYS_SIGLIST
1.1.1.7 ! root 216: #ifndef DONT_DECLARE_SYS_SIGLIST
1.1 root 217: extern char *sys_siglist[];
1.1.1.2 root 218: #endif
1.1.1.7 ! root 219: #endif
1.1 root 220: extern char *version_string;
221:
222: static int vflag; /* true if -v */
223: static int rflag; /* true if -r */
1.1.1.3 root 224: static int strip_flag; /* true if -s */
1.1 root 225:
226: static int debug; /* true if -debug */
227:
228: static int temp_filename_length; /* Length of temp_filename */
229: static char *temp_filename; /* Base of temp filenames */
230: static char *c_file; /* <xxx>.c for constructor/destructor list. */
231: static char *o_file; /* <xxx>.o for constructor/destructor list. */
1.1.1.5 root 232: static char *output_file; /* Output file for ld. */
1.1 root 233: static char *nm_file_name; /* pathname of nm */
1.1.1.3 root 234: static char *strip_file_name; /* pathname of strip */
1.1 root 235:
236: static struct head constructors; /* list of constructors found */
237: static struct head destructors; /* list of destructors found */
238:
239: extern char *getenv ();
240: extern char *mktemp ();
1.1.1.6 root 241: extern FILE *fdopen ();
242:
243: /* Structure to hold all the directories in which to search for files to
244: execute. */
245:
246: struct prefix_list
247: {
248: char *prefix; /* String to prepend to the path. */
249: struct prefix_list *next; /* Next in linked list. */
250: };
251:
252: struct path_prefix
253: {
254: struct prefix_list *plist; /* List of prefixes to try */
255: int max_len; /* Max length of a prefix in PLIST */
256: char *name; /* Name of this list (used in config stuff) */
257: };
258:
259: static void my_exit PROTO((int));
260: static void handler PROTO((int));
261: static int is_ctor_dtor PROTO((char *));
262: static void choose_temp_base PROTO((void));
263: static int is_in_prefix_list PROTO((struct path_prefix *, char *, int));
264: static char *find_a_file PROTO((struct path_prefix *, char *));
265: static void add_prefix PROTO((struct path_prefix *, char *));
266: static void prefix_from_env PROTO((char *, struct path_prefix *));
267: static void do_wait PROTO((char *));
268: static void fork_execute PROTO((char *, char **));
269: static void maybe_unlink PROTO((char *));
270: static void add_to_list PROTO((struct head *, char *));
271: static void write_list PROTO((FILE *, char *, struct id *));
272: static void write_list_with_asm PROTO((FILE *, char *, struct id *));
273: static void write_c_file PROTO((FILE *, char *));
274: static void scan_prog_file PROTO((char *, enum pass));
1.1 root 275:
276: generic *xcalloc ();
277: generic *xmalloc ();
1.1.1.4 root 278:
279: extern char *index ();
280: extern char *rindex ();
1.1 root 281:
1.1.1.4 root 282: #ifdef NO_DUP2
1.1.1.6 root 283: int
1.1.1.4 root 284: dup2 (oldfd, newfd)
285: int oldfd;
286: int newfd;
287: {
288: int fdtmp[256];
289: int fdx = 0;
290: int fd;
291:
292: if (oldfd == newfd)
1.1.1.7 ! root 293: return oldfd;
1.1.1.4 root 294: close (newfd);
1.1.1.7 ! root 295: while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
1.1.1.4 root 296: fdtmp[fdx++] = fd;
297: while (fdx > 0)
298: close (fdtmp[--fdx]);
1.1.1.6 root 299:
1.1.1.7 ! root 300: return fd;
1.1.1.4 root 301: }
302: #endif
303:
1.1.1.2 root 304: char *
1.1.1.3 root 305: my_strerror (e)
1.1 root 306: int e;
307: {
308:
1.1.1.7 ! root 309: #ifdef HAVE_STRERROR
! 310: return strerror (e);
! 311:
! 312: #else
! 313:
! 314: static char buffer[30];
1.1 root 315: if (!e)
316: return "";
317:
318: if (e > 0 && e < sys_nerr)
319: return sys_errlist[e];
320:
321: sprintf (buffer, "Unknown error %d", e);
322: return buffer;
1.1.1.7 ! root 323: #endif
1.1 root 324: }
325:
326: /* Delete tempfiles and exit function. */
327:
328: static void
329: my_exit (status)
330: int status;
331: {
1.1.1.2 root 332: if (c_file != 0 && c_file[0])
1.1 root 333: maybe_unlink (c_file);
334:
1.1.1.2 root 335: if (o_file != 0 && o_file[0])
1.1 root 336: maybe_unlink (o_file);
337:
1.1.1.5 root 338: if (status != 0 && output_file != 0 && output_file[0])
339: maybe_unlink (output_file);
340:
1.1 root 341: exit (status);
342: }
343:
344:
345: /* Die when sys call fails. */
346:
347: static void
1.1.1.3 root 348: fatal_perror (string, arg1, arg2, arg3)
1.1.1.7 ! root 349: char *string, *arg1, *arg2, *arg3;
1.1 root 350: {
351: int e = errno;
352:
1.1.1.6 root 353: fprintf (stderr, "collect2: ");
1.1.1.3 root 354: fprintf (stderr, string, arg1, arg2, arg3);
355: fprintf (stderr, ": %s\n", my_strerror (e));
1.1 root 356: my_exit (1);
357: }
358:
359: /* Just die. */
360:
361: static void
1.1.1.3 root 362: fatal (string, arg1, arg2, arg3)
1.1.1.7 ! root 363: char *string, *arg1, *arg2, *arg3;
1.1 root 364: {
1.1.1.6 root 365: fprintf (stderr, "collect2: ");
1.1.1.3 root 366: fprintf (stderr, string, arg1, arg2, arg3);
1.1 root 367: fprintf (stderr, "\n");
368: my_exit (1);
369: }
370:
371: /* Write error message. */
372:
373: static void
1.1.1.3 root 374: error (string, arg1, arg2, arg3, arg4)
1.1.1.7 ! root 375: char *string, *arg1, *arg2, *arg3, *arg4;
1.1 root 376: {
1.1.1.6 root 377: fprintf (stderr, "collect2: ");
1.1.1.3 root 378: fprintf (stderr, string, arg1, arg2, arg3, arg4);
1.1 root 379: fprintf (stderr, "\n");
380: }
381:
382: /* In case obstack is linked in, and abort is defined to fancy_abort,
383: provide a default entry. */
384:
385: void
386: fancy_abort ()
387: {
388: fatal ("internal error");
389: }
390:
391:
392: static void
393: handler (signo)
394: int signo;
395: {
1.1.1.6 root 396: if (c_file != 0 && c_file[0])
1.1 root 397: maybe_unlink (c_file);
398:
1.1.1.6 root 399: if (o_file != 0 && o_file[0])
1.1 root 400: maybe_unlink (o_file);
401:
402: signal (signo, SIG_DFL);
403: kill (getpid (), signo);
404: }
405:
406:
407: generic *
408: xcalloc (size1, size2)
409: int size1, size2;
410: {
411: generic *ptr = (generic *) calloc (size1, size2);
412: if (ptr)
413: return ptr;
414:
1.1.1.3 root 415: fatal ("out of memory");
1.1 root 416: return (generic *)0;
417: }
418:
419: generic *
420: xmalloc (size)
421: int size;
422: {
423: generic *ptr = (generic *) malloc (size);
424: if (ptr)
425: return ptr;
426:
1.1.1.3 root 427: fatal ("out of memory");
1.1 root 428: return (generic *)0;
429: }
430:
1.1.1.2 root 431: /* Make a copy of a string INPUT with size SIZE. */
432:
433: char *
434: savestring (input, size)
435: char *input;
436: int size;
437: {
438: char *output = (char *) xmalloc (size + 1);
1.1.1.3 root 439: bcopy (input, output, size);
440: output[size] = 0;
1.1.1.2 root 441: return output;
442: }
443:
444: /* Decide whether the given symbol is:
445: a constructor (1), a destructor (2), or neither (0). */
446:
447: static int
448: is_ctor_dtor (s)
449: char *s;
450: {
451: struct names { char *name; int len; int ret; int two_underscores; };
452:
453: register struct names *p;
454: register int ch;
455: register char *orig_s = s;
456:
457: static struct names special[] = {
458: #ifdef NO_DOLLAR_IN_LABEL
1.1.1.5 root 459: #ifdef NO_DOT_IN_LABEL
1.1.1.6 root 460: { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
461: { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
1.1.1.5 root 462: #else
1.1.1.2 root 463: { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
464: { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
1.1.1.5 root 465: #endif
1.1.1.2 root 466: #else
467: { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
1.1.1.6 root 468: { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
1.1.1.2 root 469: #endif
1.1.1.4 root 470: #ifdef CFRONT_LOSSAGE /* Don't collect cfront initialization functions.
471: cfront has its own linker procedure to collect them;
472: if collect2 gets them too, they get collected twice
473: when the cfront procedure is run and the compiler used
474: for linking happens to be GCC. */
1.1.1.2 root 475: { "sti__", sizeof ("sti__")-1, 1, 1 },
476: { "std__", sizeof ("std__")-1, 2, 1 },
1.1.1.4 root 477: #endif /* CFRONT_LOSSAGE */
1.1.1.2 root 478: { NULL, 0, 0, 0 }
479: };
480:
481: while ((ch = *s) == '_')
482: ++s;
483:
484: if (s == orig_s)
485: return 0;
486:
487: for (p = &special[0]; p->len > 0; p++)
488: {
489: if (ch == p->name[0]
490: && (!p->two_underscores || ((s - orig_s) >= 2))
491: && strncmp(s, p->name, p->len) == 0)
492: {
493: return p->ret;
494: }
495: }
496: return 0;
497: }
498:
1.1 root 499:
500: /* Compute a string to use as the base of all temporary file names.
501: It is substituted for %g. */
502:
503: static void
504: choose_temp_base ()
505: {
506: char *base = getenv ("TMPDIR");
507: int len;
508:
509: if (base == (char *)0)
510: {
511: #ifdef P_tmpdir
512: if (access (P_tmpdir, R_OK | W_OK) == 0)
513: base = P_tmpdir;
514: #endif
515: if (base == (char *)0)
516: {
517: if (access ("/usr/tmp", R_OK | W_OK) == 0)
518: base = "/usr/tmp/";
519: else
520: base = "/tmp/";
521: }
522: }
523:
524: len = strlen (base);
1.1.1.5 root 525: temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1);
1.1 root 526: strcpy (temp_filename, base);
527: if (len > 0 && temp_filename[len-1] != '/')
528: temp_filename[len++] = '/';
529: strcpy (temp_filename + len, "ccXXXXXX");
530:
531: mktemp (temp_filename);
532: temp_filename_length = strlen (temp_filename);
533: }
1.1.1.5 root 534:
535: /* Routine to add variables to the environment. */
536:
537: #ifndef HAVE_PUTENV
538:
1.1.1.6 root 539: int
1.1.1.5 root 540: putenv (str)
541: char *str;
542: {
543: #ifndef VMS /* nor about VMS */
544:
545: extern char **environ;
546: char **old_environ = environ;
547: char **envp;
548: int num_envs = 0;
549: int name_len = 1;
550: char *p = str;
551: int ch;
552:
553: while ((ch = *p++) != '\0' && ch != '=')
554: name_len++;
555:
556: if (!ch)
557: abort ();
558:
559: /* Search for replacing an existing environment variable, and
560: count the number of total environment variables. */
561: for (envp = old_environ; *envp; envp++)
562: {
563: num_envs++;
564: if (!strncmp (str, *envp, name_len))
565: {
566: *envp = str;
1.1.1.6 root 567: return 0;
1.1.1.5 root 568: }
569: }
570:
571: /* Add a new environment variable */
572: environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
573: *environ = str;
1.1.1.7 ! root 574: bcopy ((char *) old_environ, (char *) (environ + 1),
! 575: sizeof (char *) * (num_envs+1));
! 576:
1.1.1.6 root 577: return 0;
1.1.1.5 root 578: #endif /* VMS */
579: }
1.1 root 580:
1.1.1.5 root 581: #endif /* HAVE_PUTENV */
582:
583: /* By default, colon separates directories in a path. */
584: #ifndef PATH_SEPARATOR
585: #define PATH_SEPARATOR ':'
586: #endif
587:
588: /* We maintain two prefix lists: one from COMPILER_PATH environment variable
589: and one from the PATH variable. */
590:
591: static struct path_prefix cpath, path;
592:
593: #ifdef CROSS_COMPILE
594: /* This is the name of the target machine. We use it to form the name
595: of the files to execute. */
596:
597: static char *target_machine = TARGET_MACHINE;
598: #endif
599:
600: /* Names under which we were executed. Never return one of those files in our
601: searches. */
602:
1.1.1.6 root 603: static struct path_prefix our_file_names;
1.1.1.5 root 604:
1.1.1.6 root 605: /* Determine if STRING is in PPREFIX.
606:
607: This utility is currently only used to look up file names. Prefix lists
608: record directory names. This matters to us because the latter has a
609: trailing slash, so I've added a flag to handle both. */
610:
611: static int
612: is_in_prefix_list (pprefix, string, filep)
613: struct path_prefix *pprefix;
614: char *string;
615: int filep;
616: {
617: struct prefix_list *pl;
618:
619: if (filep)
620: {
621: int len = strlen (string);
622:
623: for (pl = pprefix->plist; pl; pl = pl->next)
624: {
625: if (strncmp (pl->prefix, string, len) == 0
626: && strcmp (pl->prefix + len, "/") == 0)
627: return 1;
628: }
629: }
630: else
631: {
632: for (pl = pprefix->plist; pl; pl = pl->next)
633: {
634: if (strcmp (pl->prefix, string) == 0)
635: return 1;
636: }
637: }
638:
639: return 0;
640: }
641:
1.1.1.5 root 642: /* Search for NAME using prefix list PPREFIX. We only look for executable
643: files.
644:
645: Return 0 if not found, otherwise return its name, allocated with malloc. */
646:
647: static char *
648: find_a_file (pprefix, name)
649: struct path_prefix *pprefix;
650: char *name;
651: {
652: char *temp;
653: struct prefix_list *pl;
654: int len = pprefix->max_len + strlen (name) + 1;
655:
656: #ifdef EXECUTABLE_SUFFIX
657: len += strlen (EXECUTABLE_SUFFIX);
658: #endif
659:
660: temp = xmalloc (len);
661:
662: /* Determine the filename to execute (special case for absolute paths). */
663:
664: if (*name == '/')
665: {
666: if (access (name, X_OK) == 0)
667: {
668: strcpy (temp, name);
669: return temp;
670: }
671: }
672: else
673: for (pl = pprefix->plist; pl; pl = pl->next)
674: {
675: strcpy (temp, pl->prefix);
676: strcat (temp, name);
1.1.1.6 root 677: if (! is_in_prefix_list (&our_file_names, temp, 1)
1.1.1.5 root 678: /* This is a kludge, but there seems no way around it. */
679: && strcmp (temp, "./ld") != 0
680: && access (temp, X_OK) == 0)
681: return temp;
682:
683: #ifdef EXECUTABLE_SUFFIX
684: /* Some systems have a suffix for executable files.
685: So try appending that. */
686: strcat (temp, EXECUTABLE_SUFFIX);
1.1.1.6 root 687: if (! is_in_prefix_list (&our_file_names, temp, 1)
1.1.1.5 root 688: && access (temp, X_OK) == 0)
689: return temp;
690: #endif
691: }
692:
693: free (temp);
694: return 0;
695: }
696:
697: /* Add an entry for PREFIX to prefix list PPREFIX. */
698:
699: static void
700: add_prefix (pprefix, prefix)
701: struct path_prefix *pprefix;
702: char *prefix;
703: {
704: struct prefix_list *pl, **prev;
705: int len;
706:
707: if (pprefix->plist)
708: {
709: for (pl = pprefix->plist; pl->next; pl = pl->next)
710: ;
711: prev = &pl->next;
712: }
713: else
714: prev = &pprefix->plist;
715:
716: /* Keep track of the longest prefix */
717:
718: len = strlen (prefix);
719: if (len > pprefix->max_len)
720: pprefix->max_len = len;
721:
722: pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
723: pl->prefix = savestring (prefix, len);
724:
725: if (*prev)
726: pl->next = *prev;
727: else
728: pl->next = (struct prefix_list *) 0;
729: *prev = pl;
730: }
731:
732: /* Take the value of the environment variable ENV, break it into a path, and
733: add of the entries to PPREFIX. */
734:
735: static void
736: prefix_from_env (env, pprefix)
737: char *env;
738: struct path_prefix *pprefix;
739: {
740: char *p = getenv (env);
741:
742: if (p)
743: {
744: char *startp, *endp;
745: char *nstore = (char *) xmalloc (strlen (p) + 3);
746:
747: startp = endp = p;
748: while (1)
749: {
750: if (*endp == PATH_SEPARATOR || *endp == 0)
751: {
752: strncpy (nstore, startp, endp-startp);
753: if (endp == startp)
754: {
755: strcpy (nstore, "./");
756: }
757: else if (endp[-1] != '/')
758: {
759: nstore[endp-startp] = '/';
760: nstore[endp-startp+1] = 0;
761: }
762: else
763: nstore[endp-startp] = 0;
764:
765: add_prefix (pprefix, nstore);
766: if (*endp == 0)
767: break;
768: endp = startp = endp + 1;
769: }
770: else
771: endp++;
772: }
773: }
774: }
1.1 root 775:
776: /* Main program. */
777:
778: int
779: main (argc, argv)
780: int argc;
781: char *argv[];
782: {
1.1.1.5 root 783: char *ld_suffix = "ld";
784: char *full_ld_suffix = ld_suffix;
785: char *real_ld_suffix = "real-ld";
786: char *full_real_ld_suffix = real_ld_suffix;
1.1.1.6 root 787: #if 0
1.1.1.5 root 788: char *gld_suffix = "gld";
789: char *full_gld_suffix = gld_suffix;
1.1.1.6 root 790: #endif
1.1.1.5 root 791: char *nm_suffix = "nm";
792: char *full_nm_suffix = nm_suffix;
793: char *gnm_suffix = "gnm";
794: char *full_gnm_suffix = gnm_suffix;
795: char *strip_suffix = "strip";
796: char *full_strip_suffix = strip_suffix;
797: char *gstrip_suffix = "gstrip";
798: char *full_gstrip_suffix = gstrip_suffix;
1.1 root 799: char *arg;
800: FILE *outf;
801: char *ld_file_name;
802: char *c_file_name;
1.1.1.6 root 803: char *collect_name;
804: char *collect_names;
1.1 root 805: char *p;
1.1.1.2 root 806: char **c_argv;
807: char **c_ptr;
1.1 root 808: char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+2);
809: char **ld1 = ld1_argv;
810: char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+5);
811: char **ld2 = ld2_argv;
812: int first_file;
1.1.1.2 root 813: int num_c_args = argc+7;
1.1 root 814:
815: #ifdef DEBUG
816: debug = 1;
817: vflag = 1;
818: #endif
819:
1.1.1.5 root 820: output_file = "a.out";
821:
822: /* We must check that we do not call ourselves in an infinite
1.1.1.6 root 823: recursion loop. We append the name used for us to the COLLECT_NAMES
824: environment variable.
1.1.1.5 root 825:
1.1.1.6 root 826: In practice, collect will rarely invoke itself. This can happen now
827: that we are no longer called gld. A perfect example is when running
828: gcc in a build directory that has been installed. When looking for
829: ld's, we'll find our installed version and believe that's the real ld. */
830:
831: /* We must also append COLLECT_NAME to COLLECT_NAMES to watch for the
832: previous version of collect (the one that used COLLECT_NAME and only
833: handled two levels of recursion). If we don't we may mutually recurse
834: forever. This can happen (I think) when bootstrapping the old version
835: and a new one is installed (rare, but we should handle it).
836: ??? Hopefully references to COLLECT_NAME can be removed at some point. */
837:
838: collect_name = (char *) getenv ("COLLECT_NAME");
839: collect_names = (char *) getenv ("COLLECT_NAMES");
840:
841: p = (char *) xmalloc (strlen ("COLLECT_NAMES=")
842: + (collect_name ? strlen (collect_name) + 1 : 0)
843: + (collect_names ? strlen (collect_names) + 1 : 0)
844: + strlen (argv[0]) + 1);
845: strcpy (p, "COLLECT_NAMES=");
846: if (collect_name != 0)
847: sprintf (p + strlen (p), "%s%c", collect_name, PATH_SEPARATOR);
848: if (collect_names != 0)
849: sprintf (p + strlen (p), "%s%c", collect_names, PATH_SEPARATOR);
850: strcat (p, argv[0]);
851: putenv (p);
852:
853: prefix_from_env ("COLLECT_NAMES", &our_file_names);
1.1.1.5 root 854:
1.1.1.6 root 855: /* Set environment variable COLLECT_NAME to our name so the previous version
856: of collect won't find us. If it does we'll mutually recurse forever.
857: This can happen when bootstrapping the new version and an old version is
858: installed.
859: ??? Hopefully this bit of code can be removed at some point. */
1.1.1.5 root 860:
1.1.1.6 root 861: p = xmalloc (strlen ("COLLECT_NAME=") + strlen (argv[0]) + 1);
862: sprintf (p, "COLLECT_NAME=%s", argv[0]);
1.1.1.5 root 863: putenv (p);
864:
1.1.1.2 root 865: p = (char *) getenv ("COLLECT_GCC_OPTIONS");
866: if (p)
867: while (*p)
868: {
869: char *q = p;
870: while (*q && *q != ' ') q++;
1.1.1.3 root 871: if (*p == '-' && p[1] == 'm')
1.1.1.2 root 872: num_c_args++;
873:
874: if (*q) q++;
875: p = q;
876: }
877:
878: c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
879:
1.1 root 880: if (argc < 2)
881: fatal ("no arguments");
882:
1.1.1.5 root 883: #ifdef SIGQUIT
1.1.1.4 root 884: if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
885: signal (SIGQUIT, handler);
1.1.1.5 root 886: #endif
1.1.1.4 root 887: if (signal (SIGINT, SIG_IGN) != SIG_IGN)
888: signal (SIGINT, handler);
1.1.1.5 root 889: #ifdef SIGALRM
1.1.1.4 root 890: if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
891: signal (SIGALRM, handler);
1.1.1.5 root 892: #endif
893: #ifdef SIGHUP
1.1.1.4 root 894: if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
895: signal (SIGHUP, handler);
1.1.1.5 root 896: #endif
1.1.1.4 root 897: if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
898: signal (SIGSEGV, handler);
1.1.1.5 root 899: #ifdef SIGBUS
1.1.1.4 root 900: if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
901: signal (SIGBUS, handler);
1.1 root 902: #endif
903:
1.1.1.5 root 904: /* Extract COMPILER_PATH and PATH into our prefix list. */
905: prefix_from_env ("COMPILER_PATH", &cpath);
906: prefix_from_env ("PATH", &path);
1.1 root 907:
1.1.1.5 root 908: #ifdef CROSS_COMPILE
909: /* If we look for a program in the compiler directories, we just use
910: the short name, since these directories are already system-specific.
911: But it we look for a took in the system directories, we need to
912: qualify the program name with the target machine. */
913:
914: full_ld_suffix
915: = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
916: strcpy (full_ld_suffix, target_machine);
917: strcat (full_ld_suffix, "-");
918: strcat (full_ld_suffix, ld_suffix);
919:
920: full_real_ld_suffix
921: = xcalloc (strlen (real_ld_suffix) + strlen (target_machine) + 2, 1);
922: strcpy (full_real_ld_suffix, target_machine);
923: strcat (full_real_ld_suffix, "-");
924: strcat (full_real_ld_suffix, real_ld_suffix);
925:
1.1.1.6 root 926: #if 0
1.1.1.5 root 927: full_gld_suffix
928: = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
929: strcpy (full_gld_suffix, target_machine);
930: strcat (full_gld_suffix, "-");
931: strcat (full_gld_suffix, gld_suffix);
1.1.1.6 root 932: #endif
1.1.1.5 root 933:
934: full_nm_suffix
935: = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
936: strcpy (full_nm_suffix, target_machine);
937: strcat (full_nm_suffix, "-");
938: strcat (full_nm_suffix, nm_suffix);
939:
940: full_gnm_suffix
941: = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
942: strcpy (full_gnm_suffix, target_machine);
943: strcat (full_gnm_suffix, "-");
944: strcat (full_gnm_suffix, gnm_suffix);
945:
946: full_strip_suffix
947: = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
948: strcpy (full_strip_suffix, target_machine);
949: strcat (full_strip_suffix, "-");
950: strcat (full_strip_suffix, strip_suffix);
951:
952: full_gstrip_suffix
953: = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
954: strcpy (full_gstrip_suffix, target_machine);
955: strcat (full_gstrip_suffix, "-");
956: strcat (full_gstrip_suffix, gstrip_suffix);
957: #endif /* CROSS_COMPILE */
958:
959: /* Try to discover a valid linker/nm/strip to use. */
960:
1.1.1.7 ! root 961: /* Maybe we know the right file to use (if not cross). */
! 962: #ifdef REAL_LD_FILE_NAME
! 963: ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
! 964: if (ld_file_name == 0)
! 965: #endif
1.1.1.6 root 966: #if 0
1.1.1.5 root 967: /* Search the (target-specific) compiler dirs for `gld'. */
968: ld_file_name = find_a_file (&cpath, gld_suffix);
969: /* Search the ordinary system bin directories
970: for `gld' (if native linking) or `TARGET-gld' (if cross). */
971: if (ld_file_name == 0)
972: ld_file_name = find_a_file (&path, full_gld_suffix);
1.1.1.6 root 973: #else
974: ld_file_name = 0;
975: #endif
1.1.1.5 root 976: /* Likewise for `real-ld'. */
977: if (ld_file_name == 0)
978: ld_file_name = find_a_file (&cpath, real_ld_suffix);
979: if (ld_file_name == 0)
980: ld_file_name = find_a_file (&path, full_real_ld_suffix);
1.1.1.7 ! root 981: /* Search the compiler directories for `ld'. We have protection against
! 982: recursive calls in find_a_file. */
1.1.1.5 root 983: if (ld_file_name == 0)
1.1.1.7 ! root 984: ld_file_name = find_a_file (&cpath, ld_suffix);
1.1.1.5 root 985: /* Search the ordinary system bin directories
986: for `ld' (if native linking) or `TARGET-ld' (if cross). */
987: if (ld_file_name == 0)
988: ld_file_name = find_a_file (&path, full_ld_suffix);
989:
1.1.1.6 root 990: /* If we've invoked ourselves, try again with LD_FILE_NAME. */
991:
992: if (collect_names != 0)
993: {
994: if (ld_file_name != 0)
995: {
996: argv[0] = ld_file_name;
997: execvp (argv[0], argv);
998: }
999: fatal ("cannot find `ld'");
1000: }
1001:
1.1.1.7 ! root 1002: #ifdef REAL_NM_FILE_NAME
! 1003: nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
! 1004: if (nm_file_name == 0)
! 1005: #endif
1.1.1.5 root 1006: nm_file_name = find_a_file (&cpath, gnm_suffix);
1007: if (nm_file_name == 0)
1008: nm_file_name = find_a_file (&path, full_gnm_suffix);
1009: if (nm_file_name == 0)
1010: nm_file_name = find_a_file (&cpath, nm_suffix);
1011: if (nm_file_name == 0)
1012: nm_file_name = find_a_file (&path, full_nm_suffix);
1.1.1.3 root 1013:
1.1.1.7 ! root 1014: #ifdef REAL_STRIP_FILE_NAME
! 1015: strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
! 1016: if (strip_file_name == 0)
! 1017: #endif
1.1.1.5 root 1018: strip_file_name = find_a_file (&cpath, gstrip_suffix);
1019: if (strip_file_name == 0)
1020: strip_file_name = find_a_file (&path, full_gstrip_suffix);
1021: if (strip_file_name == 0)
1022: strip_file_name = find_a_file (&cpath, strip_suffix);
1023: if (strip_file_name == 0)
1024: strip_file_name = find_a_file (&path, full_strip_suffix);
1.1 root 1025:
1.1.1.3 root 1026: /* Determine the full path name of the C compiler to use. */
1.1.1.2 root 1027: c_file_name = getenv ("COLLECT_GCC");
1.1.1.4 root 1028: if (c_file_name == 0)
1.1 root 1029: {
1.1.1.5 root 1030: #ifdef CROSS_COMPILE
1031: c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
1032: strcpy (c_file_name, target_machine);
1033: strcat (c_file_name, "-gcc");
1.1 root 1034: #else
1.1.1.5 root 1035: c_file_name = "gcc";
1.1.1.3 root 1036: #endif
1037: }
1038:
1.1.1.5 root 1039: p = find_a_file (&cpath, c_file_name);
1.1 root 1040:
1.1.1.5 root 1041: /* Here it should be safe to use the system search path since we should have
1042: already qualified the name of the compiler when it is needed. */
1043: if (p == 0)
1044: p = find_a_file (&path, c_file_name);
1045:
1046: if (p)
1047: c_file_name = p;
1048:
1049: *ld1++ = *ld2++ = ld_file_name;
1.1 root 1050:
1051: /* Make temp file names. */
1052: choose_temp_base ();
1053: c_file = xcalloc (temp_filename_length + sizeof (".c"), 1);
1054: o_file = xcalloc (temp_filename_length + sizeof (".o"), 1);
1055: sprintf (c_file, "%s.c", temp_filename);
1056: sprintf (o_file, "%s.o", temp_filename);
1.1.1.2 root 1057: *c_ptr++ = c_file_name;
1.1 root 1058: *c_ptr++ = "-c";
1059: *c_ptr++ = "-o";
1060: *c_ptr++ = o_file;
1061:
1.1.1.2 root 1062: /* !!! When GCC calls collect2,
1063: it does not know whether it is calling collect2 or ld.
1064: So collect2 cannot meaningfully understand any options
1065: except those ld understands.
1066: If you propose to make GCC pass some other option,
1067: just imagine what will happen if ld is really ld!!! */
1068:
1.1 root 1069: /* Parse arguments. Remember output file spec, pass the rest to ld. */
1.1.1.2 root 1070: /* After the first file, put in the c++ rt0. */
1071:
1.1 root 1072: first_file = 1;
1073: while ((arg = *++argv) != (char *)0)
1074: {
1075: *ld1++ = *ld2++ = arg;
1076:
1077: if (arg[0] == '-')
1.1.1.7 ! root 1078: {
1.1 root 1079: switch (arg[1])
1080: {
1081: case 'd':
1082: if (!strcmp (arg, "-debug"))
1083: {
1084: debug = 1;
1085: vflag = 1;
1086: ld1--;
1087: ld2--;
1088: }
1089: break;
1090:
1091: case 'o':
1.1.1.5 root 1092: output_file = (arg[2] == '\0') ? argv[1] : &arg[2];
1.1 root 1093: break;
1094:
1095: case 'r':
1096: if (arg[2] == '\0')
1097: rflag = 1;
1098: break;
1099:
1.1.1.3 root 1100: case 's':
1101: if (arg[2] == '\0')
1102: {
1103: /* We must strip after the nm run, otherwise C++ linking
1104: won't work. Thus we strip in the second ld run, or
1105: else with strip if there is no second ld run. */
1106: strip_flag = 1;
1107: ld1--;
1108: }
1109: break;
1110:
1.1 root 1111: case 'v':
1112: if (arg[2] == '\0')
1113: vflag = 1;
1114: break;
1115: }
1.1.1.7 ! root 1116: }
1.1 root 1117: else if (first_file
1.1.1.4 root 1118: && (p = rindex (arg, '.')) != (char *)0
1.1 root 1119: && strcmp (p, ".o") == 0)
1120: {
1121: first_file = 0;
1122: *ld2++ = o_file;
1123: }
1124: }
1125:
1.1.1.2 root 1126: /* Get any options that the upper GCC wants to pass to the sub-GCC. */
1127: p = (char *) getenv ("COLLECT_GCC_OPTIONS");
1128: if (p)
1129: while (*p)
1130: {
1131: char *q = p;
1132: while (*q && *q != ' ') q++;
1133: if (*p == '-' && (p[1] == 'm' || p[1] == 'f'))
1134: *c_ptr++ = savestring (p, q - p);
1135:
1136: if (*q) q++;
1137: p = q;
1138: }
1139:
1.1 root 1140: *c_ptr++ = c_file;
1141: *c_ptr = *ld1 = *ld2 = (char *)0;
1142:
1143: if (vflag)
1144: {
1.1.1.2 root 1145: fprintf (stderr, "collect2 version %s", version_string);
1.1 root 1146: #ifdef TARGET_VERSION
1147: TARGET_VERSION;
1148: #endif
1149: fprintf (stderr, "\n");
1150: }
1151:
1152: if (debug)
1153: {
1.1.1.2 root 1154: char *ptr;
1.1.1.5 root 1155: fprintf (stderr, "ld_file_name = %s\n",
1156: (ld_file_name ? ld_file_name : "not found"));
1157: fprintf (stderr, "c_file_name = %s\n",
1158: (c_file_name ? c_file_name : "not found"));
1159: fprintf (stderr, "nm_file_name = %s\n",
1160: (nm_file_name ? nm_file_name : "not found"));
1161: fprintf (stderr, "strip_file_name = %s\n",
1162: (strip_file_name ? strip_file_name : "not found"));
1163: fprintf (stderr, "c_file = %s\n",
1164: (c_file ? c_file : "not found"));
1165: fprintf (stderr, "o_file = %s\n",
1166: (o_file ? o_file : "not found"));
1.1.1.2 root 1167:
1.1.1.6 root 1168: ptr = getenv ("COLLECT_NAMES");
1169: if (ptr)
1170: fprintf (stderr, "COLLECT_NAMES = %s\n", ptr);
1171:
1.1.1.2 root 1172: ptr = getenv ("COLLECT_GCC_OPTIONS");
1173: if (ptr)
1174: fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1175:
1176: ptr = getenv ("COLLECT_GCC");
1177: if (ptr)
1178: fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1179:
1180: ptr = getenv ("COMPILER_PATH");
1181: if (ptr)
1182: fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1183:
1184: ptr = getenv ("LIBRARY_PATH");
1185: if (ptr)
1186: fprintf (stderr, "LIBRARY_PATH = %s\n", ptr);
1187:
1188: fprintf (stderr, "\n");
1.1 root 1189: }
1190:
1191: /* Load the program, searching all libraries.
1192: Examine the namelist with nm and search it for static constructors
1193: and destructors to call.
1194: Write the constructor and destructor tables to a .s file and reload. */
1195:
1.1.1.5 root 1196: fork_execute ("ld", ld1_argv);
1.1 root 1197:
1198: /* If -r, don't build the constructor or destructor list, just return now. */
1199: if (rflag)
1200: return 0;
1201:
1.1.1.5 root 1202: scan_prog_file (output_file, PASS_FIRST);
1.1 root 1203:
1204: if (debug)
1205: {
1206: fprintf (stderr, "%d constructor(s) found\n", constructors.number);
1207: fprintf (stderr, "%d destructor(s) found\n", destructors.number);
1208: }
1209:
1210: if (constructors.number == 0 && destructors.number == 0)
1.1.1.3 root 1211: {
1212: /* Strip now if it was requested on the command line. */
1213: if (strip_flag)
1214: {
1215: char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
1.1.1.5 root 1216: strip_argv[0] = strip_file_name;
1217: strip_argv[1] = output_file;
1.1.1.3 root 1218: strip_argv[2] = (char *) 0;
1.1.1.5 root 1219: fork_execute ("strip", strip_argv);
1.1.1.3 root 1220: }
1221: return 0;
1222: }
1.1 root 1223:
1.1.1.7 ! root 1224: maybe_unlink(output_file);
1.1 root 1225: outf = fopen (c_file, "w");
1226: if (outf == (FILE *)0)
1.1.1.3 root 1227: fatal_perror ("%s", c_file);
1.1 root 1228:
1229: write_c_file (outf, c_file);
1230:
1231: if (fclose (outf))
1.1.1.3 root 1232: fatal_perror ("closing %s", c_file);
1.1 root 1233:
1234: if (debug)
1235: {
1.1.1.5 root 1236: fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1237: output_file, c_file);
1.1 root 1238: write_c_file (stderr, "stderr");
1239: fprintf (stderr, "========== end of c_file\n\n");
1240: }
1241:
1242: /* Assemble the constructor and destructor tables.
1243: Link the tables in with the rest of the program. */
1244:
1.1.1.5 root 1245: fork_execute ("gcc", c_argv);
1246: fork_execute ("ld", ld2_argv);
1.1 root 1247:
1248: /* Let scan_prog_file do any final mods (OSF/rose needs this for
1249: constructors/destructors in shared libraries. */
1.1.1.5 root 1250: scan_prog_file (output_file, PASS_SECOND);
1.1 root 1251:
1252: maybe_unlink (c_file);
1253: maybe_unlink (o_file);
1254: return 0;
1255: }
1256:
1257:
1258: /* Wait for a process to finish, and exit if a non-zero status is found. */
1259:
1260: static void
1261: do_wait (prog)
1262: char *prog;
1263: {
1264: int status;
1265:
1266: wait (&status);
1267: if (status)
1268: {
1.1.1.7 ! root 1269: if (WIFSIGNALED (status))
1.1 root 1270: {
1.1.1.7 ! root 1271: int sig = WTERMSIG (status);
1.1.1.2 root 1272: #ifdef NO_SYS_SIGLIST
1273: error ("%s terminated with signal %d %s",
1274: prog,
1275: sig,
1276: (status & 0200) ? ", core dumped" : "");
1277: #else
1.1 root 1278: error ("%s terminated with signal %d [%s]%s",
1279: prog,
1280: sig,
1281: sys_siglist[sig],
1282: (status & 0200) ? ", core dumped" : "");
1.1.1.2 root 1283: #endif
1.1 root 1284:
1285: my_exit (127);
1286: }
1287:
1.1.1.7 ! root 1288: if (WIFEXITED (status))
1.1 root 1289: {
1.1.1.7 ! root 1290: int ret = WEXITSTATUS (status);
! 1291: if (ret != 0)
! 1292: {
! 1293: error ("%s returned %d exit status", prog, ret);
! 1294: my_exit (ret);
! 1295: }
1.1 root 1296: }
1297: }
1298: }
1299:
1300:
1301: /* Fork and execute a program, and wait for the reply. */
1302:
1303: static void
1304: fork_execute (prog, argv)
1305: char *prog;
1306: char **argv;
1307: {
1308: int pid;
1309:
1310: if (vflag || debug)
1311: {
1312: char **p_argv;
1313: char *str;
1314:
1.1.1.5 root 1315: if (argv[0])
1316: fprintf (stderr, "%s", argv[0]);
1317: else
1318: fprintf (stderr, "[cannot find %s]", prog);
1319:
1.1 root 1320: for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++)
1321: fprintf (stderr, " %s", str);
1322:
1323: fprintf (stderr, "\n");
1324: }
1325:
1326: fflush (stdout);
1327: fflush (stderr);
1328:
1.1.1.5 root 1329: /* If we can't find a program we need, complain error. Do this here
1330: since we might not end up needing something that we couldn't find. */
1331:
1332: if (argv[0] == 0)
1333: fatal ("cannot find `%s'", prog);
1334:
1.1 root 1335: pid = vfork ();
1336: if (pid == -1)
1.1.1.6 root 1337: {
1338: #ifdef vfork
1339: fatal_perror ("fork");
1340: #else
1341: fatal_perror ("vfork");
1342: #endif
1343: }
1.1 root 1344:
1345: if (pid == 0) /* child context */
1346: {
1.1.1.5 root 1347: execvp (argv[0], argv);
1.1.1.3 root 1348: fatal_perror ("executing %s", prog);
1.1 root 1349: }
1350:
1351: do_wait (prog);
1352: }
1353:
1354:
1355: /* Unlink a file unless we are debugging. */
1356:
1357: static void
1358: maybe_unlink (file)
1359: char *file;
1360: {
1361: if (!debug)
1362: unlink (file);
1363: else
1364: fprintf (stderr, "[Leaving %s]\n", file);
1365: }
1366:
1367:
1368: /* Add a name to a linked list. */
1369:
1370: static void
1371: add_to_list (head_ptr, name)
1372: struct head *head_ptr;
1373: char *name;
1374: {
1.1.1.7 ! root 1375: struct id *newid
! 1376: = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
! 1377: struct id *p;
1.1 root 1378: static long sequence_number = 0;
1379: strcpy (newid->name, name);
1380:
1381: if (head_ptr->first)
1382: head_ptr->last->next = newid;
1383: else
1384: head_ptr->first = newid;
1385:
1.1.1.7 ! root 1386: /* Check for duplicate symbols. */
! 1387: for (p = head_ptr->first;
! 1388: strcmp (name, p->name) != 0;
! 1389: p = p->next)
! 1390: ;
! 1391: if (p != newid)
! 1392: {
! 1393: head_ptr->last->next = 0;
! 1394: free (newid);
! 1395: return;
! 1396: }
! 1397:
! 1398: newid->sequence = ++sequence_number;
1.1 root 1399: head_ptr->last = newid;
1400: head_ptr->number++;
1401: }
1402:
1403: /* Write: `prefix', the names on list LIST, `suffix'. */
1404:
1405: static void
1406: write_list (stream, prefix, list)
1407: FILE *stream;
1408: char *prefix;
1409: struct id *list;
1410: {
1411: while (list)
1412: {
1413: fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1414: list = list->next;
1415: }
1416: }
1417:
1418: static void
1419: write_list_with_asm (stream, prefix, list)
1420: FILE *stream;
1421: char *prefix;
1422: struct id *list;
1423: {
1424: while (list)
1425: {
1.1.1.5 root 1426: fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1.1 root 1427: prefix, list->sequence, list->name);
1428: list = list->next;
1429: }
1430: }
1431:
1432: /* Write the constructor/destructor tables. */
1433:
1434: static void
1435: write_c_file (stream, name)
1436: FILE *stream;
1437: char *name;
1438: {
1439: /* Write the tables as C code */
1440:
1441: fprintf (stream, "typedef void entry_pt();\n\n");
1442:
1.1.1.3 root 1443: write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1.1 root 1444:
1445: fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
1446: fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number);
1447: write_list (stream, "\t", constructors.first);
1448: fprintf (stream, "\t0\n};\n\n");
1449:
1.1.1.3 root 1450: write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1.1 root 1451:
1452: fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
1453: fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number);
1454: write_list (stream, "\t", destructors.first);
1455: fprintf (stream, "\t0\n};\n\n");
1456:
1.1.1.6 root 1457: fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
1458: fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
1.1 root 1459: }
1460:
1461:
1.1.1.2 root 1462: #ifdef OBJECT_FORMAT_NONE
1.1 root 1463:
1.1.1.2 root 1464: /* Generic version to scan the name list of the loaded program for
1465: the symbols g++ uses for static constructors and destructors.
1.1 root 1466:
1467: The constructor table begins at __CTOR_LIST__ and contains a count
1468: of the number of pointers (or -1 if the constructors are built in a
1469: separate section by the linker), followed by the pointers to the
1470: constructor functions, terminated with a null pointer. The
1471: destructor table has the same format, and begins at __DTOR_LIST__. */
1472:
1473: static void
1474: scan_prog_file (prog_name, which_pass)
1475: char *prog_name;
1476: enum pass which_pass;
1477: {
1478: void (*int_handler) ();
1479: void (*quit_handler) ();
1480: char *nm_argv[4];
1481: int pid;
1482: int argc = 0;
1483: int pipe_fd[2];
1484: char *p, buf[1024];
1485: FILE *inf;
1486:
1487: if (which_pass != PASS_FIRST)
1488: return;
1489:
1.1.1.5 root 1490: /* If we don't have an `nm', complain. */
1491: if (nm_file_name == 0)
1492: fatal ("cannot find `nm'");
1493:
1.1 root 1494: nm_argv[argc++] = "nm";
1495: if (NM_FLAGS[0] != '\0')
1496: nm_argv[argc++] = NM_FLAGS;
1497:
1498: nm_argv[argc++] = prog_name;
1499: nm_argv[argc++] = (char *)0;
1500:
1501: if (pipe (pipe_fd) < 0)
1502: fatal_perror ("pipe");
1503:
1504: inf = fdopen (pipe_fd[0], "r");
1505: if (inf == (FILE *)0)
1506: fatal_perror ("fdopen");
1507:
1508: /* Trace if needed. */
1509: if (vflag)
1510: {
1511: char **p_argv;
1512: char *str;
1513:
1514: fprintf (stderr, "%s", nm_file_name);
1515: for (p_argv = &nm_argv[1]; (str = *p_argv) != (char *)0; p_argv++)
1516: fprintf (stderr, " %s", str);
1517:
1518: fprintf (stderr, "\n");
1519: }
1520:
1521: fflush (stdout);
1522: fflush (stderr);
1523:
1524: /* Spawn child nm on pipe */
1525: pid = vfork ();
1526: if (pid == -1)
1.1.1.6 root 1527: {
1528: #ifdef vfork
1529: fatal_perror ("fork");
1530: #else
1531: fatal_perror ("vfork");
1532: #endif
1533: }
1.1 root 1534:
1535: if (pid == 0) /* child context */
1536: {
1537: /* setup stdout */
1538: if (dup2 (pipe_fd[1], 1) < 0)
1.1.1.3 root 1539: fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
1.1 root 1540:
1541: if (close (pipe_fd[0]) < 0)
1.1.1.3 root 1542: fatal_perror ("close (%d)", pipe_fd[0]);
1.1 root 1543:
1544: if (close (pipe_fd[1]) < 0)
1.1.1.3 root 1545: fatal_perror ("close (%d)", pipe_fd[1]);
1.1 root 1546:
1547: execv (nm_file_name, nm_argv);
1.1.1.3 root 1548: fatal_perror ("executing %s", nm_file_name);
1.1 root 1549: }
1550:
1551: /* Parent context from here on. */
1552: int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
1.1.1.5 root 1553: #ifdef SIGQUIT
1.1 root 1554: quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
1.1.1.5 root 1555: #endif
1.1 root 1556:
1557: if (close (pipe_fd[1]) < 0)
1.1.1.3 root 1558: fatal_perror ("close (%d)", pipe_fd[1]);
1.1 root 1559:
1560: if (debug)
1561: fprintf (stderr, "\nnm output with constructors/destructors.\n");
1562:
1563: /* Read each line of nm output. */
1564: while (fgets (buf, sizeof buf, inf) != (char *)0)
1565: {
1566: int ch, ch2;
1.1.1.2 root 1567: char *name, *end;
1.1 root 1568:
1569: /* If it contains a constructor or destructor name, add the name
1570: to the appropriate list. */
1571:
1572: for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
1573: ;
1574:
1575: if (ch == '\0' || ch == '\n')
1576: continue;
1.1.1.2 root 1577:
1578: name = p;
1579: /* Find the end of the symbol name.
1580: Don't include `|', because Encore nm can tack that on the end. */
1581: for (end = p; (ch2 = *end) != '\0' && !isspace (ch2) && ch2 != '|';
1582: end++)
1583: continue;
1.1 root 1584:
1.1.1.7 ! root 1585:
1.1 root 1586: *end = '\0';
1.1.1.2 root 1587: switch (is_ctor_dtor (name))
1.1 root 1588: {
1.1.1.2 root 1589: case 1:
1590: add_to_list (&constructors, name);
1591: break;
1592:
1593: case 2:
1594: add_to_list (&destructors, name);
1595: break;
1.1 root 1596:
1.1.1.2 root 1597: default: /* not a constructor or destructor */
1598: continue;
1.1 root 1599: }
1600:
1601: if (debug)
1602: fprintf (stderr, "\t%s\n", buf);
1603: }
1604:
1605: if (debug)
1606: fprintf (stderr, "\n");
1607:
1608: if (fclose (inf) != 0)
1609: fatal_perror ("fclose of pipe");
1610:
1611: do_wait (nm_file_name);
1612:
1613: signal (SIGINT, int_handler);
1.1.1.5 root 1614: #ifdef SIGQUIT
1.1 root 1615: signal (SIGQUIT, quit_handler);
1.1.1.5 root 1616: #endif
1.1 root 1617: }
1618:
1.1.1.2 root 1619: #endif /* OBJECT_FORMAT_NONE */
1620:
1621:
1622: /*
1623: * COFF specific stuff.
1624: */
1625:
1626: #ifdef OBJECT_FORMAT_COFF
1627:
1628: #if defined(EXTENDED_COFF)
1.1.1.3 root 1629: # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
1630: # define GCC_SYMENT SYMR
1631: # define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText)
1632: # define GCC_SYMINC(X) (1)
1633: # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
1634: # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
1.1.1.2 root 1635: #else
1.1.1.3 root 1636: # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
1637: # define GCC_SYMENT SYMENT
1.1.1.2 root 1638: # define GCC_OK_SYMBOL(X) \
1639: (((X).n_sclass == C_EXT) && \
1640: (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \
1641: ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))
1.1.1.3 root 1642: # define GCC_SYMINC(X) ((X).n_numaux+1)
1643: # define GCC_SYMZERO(X) 0
1644: # define GCC_CHECK_HDR(X) (1)
1.1.1.2 root 1645: #endif
1646:
1647: extern char *ldgetname ();
1648:
1649: /* COFF version to scan the name list of the loaded program for
1650: the symbols g++ uses for static constructors and destructors.
1651:
1652: The constructor table begins at __CTOR_LIST__ and contains a count
1653: of the number of pointers (or -1 if the constructors are built in a
1654: separate section by the linker), followed by the pointers to the
1655: constructor functions, terminated with a null pointer. The
1656: destructor table has the same format, and begins at __DTOR_LIST__. */
1657:
1658: static void
1659: scan_prog_file (prog_name, which_pass)
1660: char *prog_name;
1661: enum pass which_pass;
1662: {
1.1.1.3 root 1663: LDFILE *ldptr = NULL;
1.1.1.2 root 1664: int sym_index, sym_count;
1665:
1666: if (which_pass != PASS_FIRST)
1667: return;
1668:
1669: if ((ldptr = ldopen (prog_name, ldptr)) == NULL)
1670: fatal ("%s: can't open as COFF file", prog_name);
1671:
1.1.1.4 root 1672: if (!MY_ISCOFF (HEADER (ldptr).f_magic))
1.1.1.2 root 1673: fatal ("%s: not a COFF file", prog_name);
1674:
1.1.1.3 root 1675: if (GCC_CHECK_HDR (ldptr))
1.1.1.2 root 1676: {
1.1.1.3 root 1677: sym_count = GCC_SYMBOLS (ldptr);
1678: sym_index = GCC_SYMZERO (ldptr);
1679: while (sym_index < sym_count)
1680: {
1681: GCC_SYMENT symbol;
1.1.1.2 root 1682:
1.1.1.3 root 1683: if (ldtbread (ldptr, sym_index, &symbol) <= 0)
1684: break;
1685: sym_index += GCC_SYMINC (symbol);
1.1.1.2 root 1686:
1.1.1.3 root 1687: if (GCC_OK_SYMBOL (symbol))
1688: {
1689: char *name;
1.1.1.2 root 1690:
1.1.1.3 root 1691: if ((name = ldgetname (ldptr, &symbol)) == NULL)
1692: continue; /* should never happen */
1.1.1.2 root 1693:
1694: #ifdef _AIX
1.1.1.3 root 1695: /* All AIX function names begin with a dot. */
1696: if (*name++ != '.')
1697: continue;
1.1.1.2 root 1698: #endif
1699:
1.1.1.3 root 1700: switch (is_ctor_dtor (name))
1701: {
1702: case 1:
1703: add_to_list (&constructors, name);
1704: break;
1.1.1.2 root 1705:
1.1.1.3 root 1706: case 2:
1707: add_to_list (&destructors, name);
1708: break;
1.1.1.2 root 1709:
1.1.1.3 root 1710: default: /* not a constructor or destructor */
1711: continue;
1712: }
1.1.1.2 root 1713:
1714: #if !defined(EXTENDED_COFF)
1.1.1.3 root 1715: if (debug)
1716: fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
1717: symbol.n_scnum, symbol.n_sclass,
1718: (symbol.n_type ? "0" : ""), symbol.n_type,
1719: name);
1.1.1.2 root 1720: #else
1.1.1.3 root 1721: if (debug)
1722: fprintf (stderr, "\tiss = %5d, value = %5d, index = %5d, name = %s\n",
1723: symbol.iss, symbol.value, symbol.index, name);
1.1.1.2 root 1724: #endif
1.1.1.3 root 1725: }
1.1.1.2 root 1726: }
1727: }
1728:
1729: (void) ldclose(ldptr);
1730: }
1731:
1732: #endif /* OBJECT_FORMAT_COFF */
1.1 root 1733:
1734:
1735: /*
1736: * OSF/rose specific stuff.
1737: */
1738:
1739: #ifdef OBJECT_FORMAT_ROSE
1740:
1741: /* Union of the various load commands */
1742:
1743: typedef union load_union
1744: {
1745: ldc_header_t hdr; /* common header */
1746: load_cmd_map_command_t map; /* map indexing other load cmds */
1.1.1.2 root 1747: interpreter_command_t iprtr; /* interpreter pathname */
1.1 root 1748: strings_command_t str; /* load commands strings section */
1749: region_command_t region; /* region load command */
1750: reloc_command_t reloc; /* relocation section */
1751: package_command_t pkg; /* package load command */
1752: symbols_command_t sym; /* symbol sections */
1753: entry_command_t ent; /* program start section */
1754: gen_info_command_t info; /* object information */
1755: func_table_command_t func; /* function constructors/destructors */
1756: } load_union_t;
1757:
1758: /* Structure to point to load command and data section in memory. */
1759:
1760: typedef struct load_all
1761: {
1762: load_union_t *load; /* load command */
1763: char *section; /* pointer to section */
1764: } load_all_t;
1765:
1766: /* Structure to contain information about a file mapped into memory. */
1767:
1768: struct file_info
1769: {
1770: char *start; /* start of map */
1771: char *name; /* filename */
1772: long size; /* size of the file */
1773: long rounded_size; /* size rounded to page boundary */
1774: int fd; /* file descriptor */
1775: int rw; /* != 0 if opened read/write */
1776: int use_mmap; /* != 0 if mmap'ed */
1777: };
1778:
1779: extern int decode_mach_o_hdr ();
1780: extern int encode_mach_o_hdr ();
1781:
1.1.1.6 root 1782: static void add_func_table PROTO((mo_header_t *, load_all_t *,
1783: symbol_info_t *, int));
1784: static void print_header PROTO((mo_header_t *));
1785: static void print_load_command PROTO((load_union_t*, size_t, int));
1786: static void bad_header PROTO((int));
1787: static struct file_info *read_file PROTO((char *, int, int));
1788: static void end_file PROTO((struct file_info *));
1.1 root 1789:
1790: /* OSF/rose specific version to scan the name list of the loaded
1791: program for the symbols g++ uses for static constructors and
1792: destructors.
1793:
1794: The constructor table begins at __CTOR_LIST__ and contains a count
1795: of the number of pointers (or -1 if the constructors are built in a
1796: separate section by the linker), followed by the pointers to the
1797: constructor functions, terminated with a null pointer. The
1798: destructor table has the same format, and begins at __DTOR_LIST__. */
1799:
1800: static void
1801: scan_prog_file (prog_name, which_pass)
1802: char *prog_name;
1803: enum pass which_pass;
1804: {
1805: char *obj;
1806: mo_header_t hdr;
1807: load_all_t *load_array;
1808: load_all_t *load_end;
1809: load_all_t *load_cmd;
1810: int symbol_load_cmds;
1811: off_t offset;
1812: int i;
1813: int num_syms;
1814: int status;
1815: char *str_sect;
1816: struct file_info *obj_file;
1817: int prog_fd;
1818: mo_lcid_t cmd_strings = -1;
1819: symbol_info_t *main_sym = 0;
1820: int rw = (which_pass != PASS_FIRST);
1821:
1822: prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
1823: if (prog_fd < 0)
1.1.1.3 root 1824: fatal_perror ("can't read %s", prog_name);
1.1 root 1825:
1826: obj_file = read_file (prog_name, prog_fd, rw);
1827: obj = obj_file->start;
1828:
1829: status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
1830: if (status != MO_HDR_CONV_SUCCESS)
1831: bad_header (status);
1832:
1833:
1834: /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
1835: since the hardware will automatically swap bytes for us on loading little endian
1836: integers. */
1837:
1838: #ifndef CROSS_COMPILE
1839: if (hdr.moh_magic != MOH_MAGIC_MSB
1840: || hdr.moh_header_version != MOH_HEADER_VERSION
1841: || hdr.moh_byte_order != OUR_BYTE_ORDER
1842: || hdr.moh_data_rep_id != OUR_DATA_REP_ID
1843: || hdr.moh_cpu_type != OUR_CPU_TYPE
1844: || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
1845: || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
1846: {
1.1.1.3 root 1847: fatal ("incompatibilities between object file & expected values");
1.1 root 1848: }
1849: #endif
1850:
1851: if (debug)
1852: print_header (&hdr);
1853:
1854: offset = hdr.moh_first_cmd_off;
1855: load_end = load_array
1856: = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
1857:
1858: /* Build array of load commands, calculating the offsets */
1859: for (i = 0; i < hdr.moh_n_load_cmds; i++)
1860: {
1861: load_union_t *load_hdr; /* load command header */
1862:
1863: load_cmd = load_end++;
1864: load_hdr = (load_union_t *) (obj + offset);
1865:
1.1.1.4 root 1866: /* If modifying the program file, copy the header. */
1.1 root 1867: if (rw)
1868: {
1869: load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
1.1.1.7 ! root 1870: bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
1.1 root 1871: load_hdr = ptr;
1872:
1873: /* null out old command map, because we will rewrite at the end. */
1874: if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
1875: {
1876: cmd_strings = ptr->map.lcm_ld_cmd_strings;
1877: ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
1878: }
1879: }
1880:
1881: load_cmd->load = load_hdr;
1882: if (load_hdr->hdr.ldci_section_off > 0)
1883: load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
1884:
1885: if (debug)
1886: print_load_command (load_hdr, offset, i);
1887:
1888: offset += load_hdr->hdr.ldci_cmd_size;
1889: }
1890:
1891: /* If the last command is the load command map and is not undefined,
1892: decrement the count of load commands. */
1893: if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
1894: {
1895: load_end--;
1896: hdr.moh_n_load_cmds--;
1897: }
1898:
1899: /* Go through and process each symbol table section. */
1900: symbol_load_cmds = 0;
1901: for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
1902: {
1903: load_union_t *load_hdr = load_cmd->load;
1904:
1905: if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
1906: {
1907: symbol_load_cmds++;
1908:
1909: if (debug)
1910: {
1.1.1.2 root 1911: char *kind = "unknown";
1.1 root 1912:
1913: switch (load_hdr->sym.symc_kind)
1914: {
1915: case SYMC_IMPORTS: kind = "imports"; break;
1916: case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
1917: case SYMC_STABS: kind = "stabs"; break;
1918: }
1919:
1920: fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
1921: symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
1922: }
1923:
1924: if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
1925: continue;
1926:
1927: str_sect = load_array[load_hdr->sym.symc_strings_section].section;
1928: if (str_sect == (char *)0)
1929: fatal ("string section missing");
1930:
1931: if (load_cmd->section == (char *)0)
1932: fatal ("section pointer missing");
1933:
1934: num_syms = load_hdr->sym.symc_nentries;
1935: for (i = 0; i < num_syms; i++)
1936: {
1937: symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
1938: char *name = sym->si_name.symbol_name + str_sect;
1939:
1940: if (name[0] != '_')
1941: continue;
1942:
1943: if (rw)
1944: {
1.1.1.6 root 1945: char *n = name + strlen (name) - strlen (NAME__MAIN);
1946:
1947: if ((n - name) < 0 || strcmp (n, NAME__MAIN))
1.1 root 1948: continue;
1.1.1.6 root 1949: while (n != name)
1950: if (*--n != '_')
1951: continue;
1.1 root 1952:
1953: main_sym = sym;
1954: }
1.1.1.2 root 1955: else
1.1 root 1956: {
1.1.1.2 root 1957: switch (is_ctor_dtor (name))
1958: {
1959: case 1:
1960: add_to_list (&constructors, name);
1961: break;
1962:
1963: case 2:
1964: add_to_list (&destructors, name);
1965: break;
1966:
1967: default: /* not a constructor or destructor */
1968: continue;
1969: }
1.1 root 1970: }
1971:
1972: if (debug)
1973: fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
1974: sym->si_type, sym->si_sc_type, sym->si_flags, name);
1975: }
1976: }
1977: }
1978:
1979: if (symbol_load_cmds == 0)
1.1.1.3 root 1980: fatal ("no symbol table found");
1.1 root 1981:
1982: /* Update the program file now, rewrite header and load commands. At present,
1983: we assume that there is enough space after the last load command to insert
1984: one more. Since the first section written out is page aligned, and the
1985: number of load commands is small, this is ok for the present. */
1986:
1987: if (rw)
1988: {
1989: load_union_t *load_map;
1990: size_t size;
1991:
1992: if (cmd_strings == -1)
1.1.1.3 root 1993: fatal ("no cmd_strings found");
1994:
1995: /* Add __main to initializer list.
1996: If we are building a program instead of a shared library, don't
1997: do anything, since in the current version, you cannot do mallocs
1998: and such in the constructors. */
1.1 root 1999:
1.1.1.3 root 2000: if (main_sym != (symbol_info_t *)0
2001: && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
1.1 root 2002: add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
2003:
2004: if (debug)
2005: fprintf (stderr, "\nUpdating header and load commands.\n\n");
2006:
2007: hdr.moh_n_load_cmds++;
2008: size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
2009:
2010: /* Create new load command map. */
2011: if (debug)
2012: fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
2013: (int)hdr.moh_n_load_cmds, (long)size);
2014:
2015: load_map = (load_union_t *) xcalloc (1, size);
2016: load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
2017: load_map->map.ldc_header.ldci_cmd_size = size;
2018: load_map->map.lcm_ld_cmd_strings = cmd_strings;
2019: load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
2020: load_array[hdr.moh_n_load_cmds-1].load = load_map;
2021:
2022: offset = hdr.moh_first_cmd_off;
2023: for (i = 0; i < hdr.moh_n_load_cmds; i++)
2024: {
2025: load_map->map.lcm_map[i] = offset;
2026: if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
2027: hdr.moh_load_map_cmd_off = offset;
2028:
2029: offset += load_array[i].load->hdr.ldci_cmd_size;
2030: }
2031:
2032: hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
2033:
2034: if (debug)
2035: print_header (&hdr);
2036:
2037: /* Write header */
2038: status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
2039: if (status != MO_HDR_CONV_SUCCESS)
2040: bad_header (status);
2041:
2042: if (debug)
2043: fprintf (stderr, "writing load commands.\n\n");
2044:
2045: /* Write load commands */
2046: offset = hdr.moh_first_cmd_off;
2047: for (i = 0; i < hdr.moh_n_load_cmds; i++)
2048: {
2049: load_union_t *load_hdr = load_array[i].load;
2050: size_t size = load_hdr->hdr.ldci_cmd_size;
2051:
2052: if (debug)
2053: print_load_command (load_hdr, offset, i);
2054:
1.1.1.7 ! root 2055: bcopy ((char *)load_hdr, (char *)(obj + offset), size);
1.1 root 2056: offset += size;
2057: }
2058: }
2059:
2060: end_file (obj_file);
2061:
2062: if (close (prog_fd))
1.1.1.3 root 2063: fatal_perror ("closing %s", prog_name);
1.1 root 2064:
2065: if (debug)
2066: fprintf (stderr, "\n");
2067: }
2068:
2069:
2070: /* Add a function table to the load commands to call a function
1.1.1.2 root 2071: on initiation or termination of the process. */
1.1 root 2072:
2073: static void
2074: add_func_table (hdr_p, load_array, sym, type)
2075: mo_header_t *hdr_p; /* pointer to global header */
2076: load_all_t *load_array; /* array of ptrs to load cmds */
2077: symbol_info_t *sym; /* pointer to symbol entry */
2078: int type; /* fntc_type value */
2079: {
2080: /* Add a new load command. */
2081: int num_cmds = ++hdr_p->moh_n_load_cmds;
2082: int load_index = num_cmds - 1;
2083: size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
2084: load_union_t *ptr = xcalloc (1, size);
2085: load_all_t *load_cmd;
2086: int i;
2087:
2088: /* Set the unresolved address bit in the header to force the loader to be
2089: used, since kernel exec does not call the initialization functions. */
2090: hdr_p->moh_flags |= MOH_UNRESOLVED_F;
2091:
2092: load_cmd = &load_array[load_index];
2093: load_cmd->load = ptr;
2094: load_cmd->section = (char *)0;
2095:
2096: /* Fill in func table load command. */
2097: ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
2098: ptr->func.ldc_header.ldci_cmd_size = size;
2099: ptr->func.ldc_header.ldci_section_off = 0;
2100: ptr->func.ldc_header.ldci_section_len = 0;
2101: ptr->func.fntc_type = type;
2102: ptr->func.fntc_nentries = 1;
2103:
2104: /* copy address, turn it from abs. address to (region,offset) if necessary. */
2105: /* Is the symbol already expressed as (region, offset)? */
2106: if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
2107: {
2108: ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
2109: ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
2110: }
2111:
2112: /* If not, figure out which region it's in. */
2113: else
2114: {
2115: mo_vm_addr_t addr = sym->si_value.abs_val;
2116: int found = 0;
2117:
2118: for (i = 0; i < load_index; i++)
2119: {
2120: if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
2121: {
2122: region_command_t *region_ptr = &load_array[i].load->region;
2123:
2124: if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
2125: && addr >= region_ptr->regc_addr.vm_addr
2126: && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
2127: {
2128: ptr->func.fntc_entry_loc[0].adr_lcid = i;
2129: ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
2130: found++;
2131: break;
2132: }
2133: }
2134: }
2135:
2136: if (!found)
2137: fatal ("could not convert 0x%l.8x into a region", addr);
2138: }
2139:
2140: if (debug)
2141: fprintf (stderr,
2142: "%s function, region %d, offset = %ld (0x%.8lx)\n",
2143: (type == FNTC_INITIALIZATION) ? "init" : "term",
2144: (int)ptr->func.fntc_entry_loc[i].adr_lcid,
2145: (long)ptr->func.fntc_entry_loc[i].adr_sctoff,
2146: (long)ptr->func.fntc_entry_loc[i].adr_sctoff);
2147:
2148: }
2149:
2150:
2151: /* Print the global header for an OSF/rose object. */
2152:
2153: static void
2154: print_header (hdr_ptr)
2155: mo_header_t *hdr_ptr;
2156: {
2157: fprintf (stderr, "\nglobal header:\n");
2158: fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
2159: fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
2160: fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
2161: fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
2162: fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
2163: fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
2164: fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
2165: fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
2166: fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
2167: fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
2168: fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
2169: fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
2170: fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
2171: fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
2172: fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
2173:
2174: if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
2175: fprintf (stderr, ", relocatable");
2176:
2177: if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
2178: fprintf (stderr, ", linkable");
2179:
2180: if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
2181: fprintf (stderr, ", execable");
2182:
2183: if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
2184: fprintf (stderr, ", executable");
2185:
2186: if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
2187: fprintf (stderr, ", unresolved");
2188:
2189: fprintf (stderr, "\n\n");
2190: return;
2191: }
2192:
2193:
2194: /* Print a short summary of a load command. */
2195:
2196: static void
2197: print_load_command (load_hdr, offset, number)
2198: load_union_t *load_hdr;
2199: size_t offset;
2200: int number;
2201: {
2202: mo_long_t type = load_hdr->hdr.ldci_cmd_type;
2203: char *type_str = (char *)0;
2204:
2205: switch (type)
2206: {
2207: case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
2208: case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
2209: case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
2210: case LDC_STRINGS: type_str = "STRINGS"; break;
2211: case LDC_REGION: type_str = "REGION"; break;
2212: case LDC_RELOC: type_str = "RELOC"; break;
2213: case LDC_PACKAGE: type_str = "PACKAGE"; break;
2214: case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
2215: case LDC_ENTRY: type_str = "ENTRY"; break;
2216: case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
2217: case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
2218: }
2219:
2220: fprintf (stderr,
2221: "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
2222: number,
2223: (long) load_hdr->hdr.ldci_cmd_size,
2224: (long) offset,
2225: (long) load_hdr->hdr.ldci_section_off,
2226: (long) load_hdr->hdr.ldci_section_len);
2227:
2228: if (type_str == (char *)0)
2229: fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
2230:
2231: else if (type != LDC_REGION)
2232: fprintf (stderr, ", ty: %s\n", type_str);
2233:
2234: else
2235: {
2236: char *region = "";
2237: switch (load_hdr->region.regc_usage_type)
2238: {
2239: case REG_TEXT_T: region = ", .text"; break;
2240: case REG_DATA_T: region = ", .data"; break;
2241: case REG_BSS_T: region = ", .bss"; break;
2242: case REG_GLUE_T: region = ", .glue"; break;
2243: #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
2244: case REG_RDATA_T: region = ", .rdata"; break;
2245: case REG_SDATA_T: region = ", .sdata"; break;
2246: case REG_SBSS_T: region = ", .sbss"; break;
2247: #endif
2248: }
2249:
2250: fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
2251: type_str,
2252: (long) load_hdr->region.regc_vm_addr,
2253: (long) load_hdr->region.regc_vm_size,
2254: region);
2255: }
2256:
2257: return;
2258: }
2259:
2260:
2261: /* Fatal error when {en,de}code_mach_o_header fails. */
2262:
2263: static void
2264: bad_header (status)
2265: int status;
2266: {
2267: char *msg = (char *)0;
2268:
2269: switch (status)
2270: {
2271: case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break;
2272: case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break;
2273: case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break;
2274: case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break;
2275: case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break;
2276: case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break;
2277: }
2278:
2279: if (msg == (char *)0)
2280: fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
2281: else
2282: fatal ("%s", msg);
2283: }
2284:
2285:
2286: /* Read a file into a memory buffer. */
2287:
2288: static struct file_info *
2289: read_file (name, fd, rw)
2290: char *name; /* filename */
2291: int fd; /* file descriptor */
2292: int rw; /* read/write */
2293: {
2294: struct stat stat_pkt;
2295: struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
2296: #ifdef USE_MMAP
2297: static int page_size;
2298: #endif
2299:
2300: if (fstat (fd, &stat_pkt) < 0)
2301: fatal_perror ("fstat %s", name);
2302:
2303: p->name = name;
2304: p->size = stat_pkt.st_size;
2305: p->rounded_size = stat_pkt.st_size;
2306: p->fd = fd;
2307: p->rw = rw;
2308:
2309: #ifdef USE_MMAP
2310: if (debug)
2311: fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
2312:
2313: if (page_size == 0)
2314: page_size = sysconf (_SC_PAGE_SIZE);
2315:
2316: p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
2317: p->start = mmap ((caddr_t)0,
2318: (rw) ? p->rounded_size : p->size,
2319: (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
2320: MAP_FILE | MAP_VARIABLE | MAP_SHARED,
2321: fd,
2322: 0L);
2323:
2324: if (p->start != (char *)0 && p->start != (char *)-1)
2325: p->use_mmap = 1;
2326:
2327: else
2328: #endif /* USE_MMAP */
2329: {
2330: long len;
2331:
2332: if (debug)
2333: fprintf (stderr, "read %s\n", name);
2334:
2335: p->use_mmap = 0;
2336: p->start = xmalloc (p->size);
2337: if (lseek (fd, 0L, SEEK_SET) < 0)
2338: fatal_perror ("lseek to 0 on %s", name);
2339:
2340: len = read (fd, p->start, p->size);
2341: if (len < 0)
2342: fatal_perror ("read %s", name);
2343:
2344: if (len != p->size)
2345: fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
2346: }
2347:
2348: return p;
2349: }
2350:
2351: /* Do anything necessary to write a file back from memory. */
2352:
2353: static void
2354: end_file (ptr)
2355: struct file_info *ptr; /* file information block */
2356: {
2357: #ifdef USE_MMAP
2358: if (ptr->use_mmap)
2359: {
2360: if (ptr->rw)
2361: {
2362: if (debug)
2363: fprintf (stderr, "msync %s\n", ptr->name);
2364:
2365: if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
2366: fatal_perror ("msync %s", ptr->name);
2367: }
2368:
2369: if (debug)
2370: fprintf (stderr, "munmap %s\n", ptr->name);
2371:
2372: if (munmap (ptr->start, ptr->size))
2373: fatal_perror ("munmap %s", ptr->name);
2374: }
2375: else
2376: #endif /* USE_MMAP */
2377: {
2378: if (ptr->rw)
2379: {
2380: long len;
2381:
2382: if (debug)
2383: fprintf (stderr, "write %s\n", ptr->name);
2384:
2385: if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
2386: fatal_perror ("lseek to 0 on %s", ptr->name);
2387:
2388: len = write (ptr->fd, ptr->start, ptr->size);
2389: if (len < 0)
2390: fatal_perror ("read %s", ptr->name);
2391:
2392: if (len != ptr->size)
2393: fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
2394: }
2395:
2396: free ((generic *)ptr->start);
2397: }
2398:
2399: free ((generic *)ptr);
2400: }
2401:
2402: #endif /* OBJECT_FORMAT_ROSE */
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