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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:
5: Copyright (C) 1992 Free Software Foundation, Inc.
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 <string.h>
32: #include <ctype.h>
33: #include <errno.h>
34: #include <signal.h>
35: #include <sys/file.h>
36: #include <sys/stat.h>
37: #include <sys/wait.h>
38:
39: #ifndef errno
40: extern int errno;
41: #endif
42:
43: #define COLLECT
44:
45: #include "config.h"
46:
47: #ifndef __STDC__
48: #include "gvarargs.h"
49: #define generic char
50: #define const
51:
52: #else
53: #include "gstdarg.h"
54: #define generic void
55: #endif
56:
57: #ifdef OBJECT_FORMAT_ROSE
58:
59: #ifdef _OSF_SOURCE
60: #define USE_MMAP
61: #endif
62:
63: #ifdef USE_MMAP
64: #include <sys/mman.h>
65: #endif
66:
67: #include <unistd.h>
68: #include <mach_o_format.h>
69: #include <mach_o_header.h>
70: #include <mach_o_vals.h>
71: #include <mach_o_types.h>
72: #endif /* OBJECT_FORMAT_ROSE */
73:
74: /* Default flags to pass to nm. */
75: #ifndef NM_FLAGS
76: #define NM_FLAGS "-p"
77: #endif
78:
79: #ifdef USG
80: #define vfork fork
81: #endif
82:
83: /* On MSDOS, write temp files in current dir
84: because there's no place else we can expect to use. */
85: #if __MSDOS__
86: #ifndef P_tmpdir
87: #define P_tmpdir "./"
88: #endif
89: #endif
90:
91:
92: /* Linked lists of constructor and destructor names. */
93:
94: struct id
95: {
96: struct id *next;
97: int sequence;
98: char name[1];
99: };
100:
101: struct head
102: {
103: struct id *first;
104: struct id *last;
105: int number;
106: };
107:
108: /* Enumeration giving which pass this is for scanning the program file. */
109:
110: enum pass {
111: PASS_FIRST, /* without constructors */
112: PASS_SECOND /* with constructors linked in */
113: };
114:
115: extern char *sys_siglist[];
116: extern char *version_string;
117:
118: static int vflag; /* true if -v */
119: static int rflag; /* true if -r */
120:
121: static int debug; /* true if -debug */
122:
123: static int temp_filename_length; /* Length of temp_filename */
124: static char *temp_filename; /* Base of temp filenames */
125: static char *c_file; /* <xxx>.c for constructor/destructor list. */
126: static char *o_file; /* <xxx>.o for constructor/destructor list. */
127: static char *nm_file_name; /* pathname of nm */
128:
129: static struct head constructors; /* list of constructors found */
130: static struct head destructors; /* list of destructors found */
131:
132: extern char *getenv ();
133: extern char *mktemp ();
134: extern int vfork ();
135: static void add_to_list ();
136: static void scan_prog_file ();
137: static void fork_execute ();
138: static void do_wait ();
139: static void write_c_file ();
140: static void my_exit ();
141: static void handler ();
142: static void maybe_unlink ();
143: static void choose_temp_base ();
144:
145: generic *xcalloc ();
146: generic *xmalloc ();
147:
148:
149: #if !defined(HAVE_STRERROR) && !defined(_OSF_SOURCE)
150:
151: char *strerror (e)
152: int e;
153: {
154: extern char *sys_errlist[];
155: extern int sys_nerr;
156: static char buffer[30];
157:
158: if (!e)
159: return "";
160:
161: if (e > 0 && e < sys_nerr)
162: return sys_errlist[e];
163:
164: sprintf (buffer, "Unknown error %d", e);
165: return buffer;
166: }
167:
168: #endif
169:
170:
171: /* Delete tempfiles and exit function. */
172:
173: static void
174: my_exit (status)
175: int status;
176: {
177: if (c_file[0])
178: maybe_unlink (c_file);
179:
180: if (o_file[0])
181: maybe_unlink (o_file);
182:
183: exit (status);
184: }
185:
186:
187: #ifndef __STDC__
188:
189: /* Die when sys call fails. */
190:
191: /*VARARGS*/
192: static void
193: fatal_perror (va_alist)
194: {
195: char *string;
196: va_list vptr;
197: int e = errno;
198:
199: va_start (vptr);
200: string = va_arg (vptr, char *);
201: fprintf (stderr, "collect: ");
202: vfprintf (stderr, string, vptr);
203: fprintf (stderr, ": %s\n", strerror (e));
204: va_end (vptr);
205: my_exit (1);
206: }
207:
208: /* Just die. */
209:
210: /*VARARGS*/
211: static void
212: fatal (va_alist)
213: {
214: char *string;
215: va_list vptr;
216:
217: va_start (vptr);
218: string = va_arg (vptr, char *);
219: fprintf (stderr, "collect: ");
220: vfprintf (stderr, string, vptr);
221: fprintf (stderr, "\n");
222: va_end (vptr);
223: my_exit (1);
224: }
225:
226: /* Write error message. */
227:
228: /*VARARGS*/
229: static void
230: error (va_alist)
231: {
232: char *string;
233: va_list vptr;
234:
235: va_start (vptr);
236: string = va_arg (vptr, char *);
237: fprintf (stderr, "collect: ");
238: vfprintf (stderr, string, vptr);
239: fprintf (stderr, "\n");
240: va_end (vptr);
241: }
242:
243: #else
244:
245: static void
246: fatal_perror (char *string, ...)
247: {
248: va_list vptr;
249: int e = errno;
250:
251: va_start (vptr, string);
252: fprintf (stderr, "collect: ");
253: vfprintf (stderr, string, vptr);
254: fprintf (stderr, ": %s\n", strerror (e));
255: va_end (vptr);
256: my_exit (1);
257: }
258:
259: /* Just die. */
260:
261: static void
262: fatal (char *string, ...)
263: {
264: va_list vptr;
265:
266: va_start (vptr, string);
267: fprintf (stderr, "collect: ");
268: vfprintf (stderr, string, vptr);
269: fprintf (stderr, "\n");
270: va_end (vptr);
271: my_exit (1);
272: }
273:
274: /* Write error message. */
275:
276: static void
277: error (char *string, ...)
278: {
279: va_list vptr;
280:
281: va_start (vptr, string);
282: fprintf (stderr, "collect: ");
283: vfprintf (stderr, string, vptr);
284: fprintf (stderr, "\n");
285: va_end (vptr);
286: }
287: #endif
288:
289:
290: /* In case obstack is linked in, and abort is defined to fancy_abort,
291: provide a default entry. */
292:
293: void
294: fancy_abort ()
295: {
296: fatal ("internal error");
297: }
298:
299:
300: static void
301: handler (signo)
302: int signo;
303: {
304: if (c_file[0])
305: maybe_unlink (c_file);
306:
307: if (o_file[0])
308: maybe_unlink (o_file);
309:
310: signal (signo, SIG_DFL);
311: kill (getpid (), signo);
312: }
313:
314:
315: generic *
316: xcalloc (size1, size2)
317: int size1, size2;
318: {
319: generic *ptr = (generic *) calloc (size1, size2);
320: if (ptr)
321: return ptr;
322:
323: fatal ("Out of memory.");
324: return (generic *)0;
325: }
326:
327: generic *
328: xmalloc (size)
329: int size;
330: {
331: generic *ptr = (generic *) malloc (size);
332: if (ptr)
333: return ptr;
334:
335: fatal ("Out of memory.");
336: return (generic *)0;
337: }
338:
339:
340: /* Compute a string to use as the base of all temporary file names.
341: It is substituted for %g. */
342:
343: static void
344: choose_temp_base ()
345: {
346: char *base = getenv ("TMPDIR");
347: int len;
348:
349: if (base == (char *)0)
350: {
351: #ifdef P_tmpdir
352: if (access (P_tmpdir, R_OK | W_OK) == 0)
353: base = P_tmpdir;
354: #endif
355: if (base == (char *)0)
356: {
357: if (access ("/usr/tmp", R_OK | W_OK) == 0)
358: base = "/usr/tmp/";
359: else
360: base = "/tmp/";
361: }
362: }
363:
364: len = strlen (base);
365: temp_filename = xmalloc (len + sizeof("/ccXXXXXX"));
366: strcpy (temp_filename, base);
367: if (len > 0 && temp_filename[len-1] != '/')
368: temp_filename[len++] = '/';
369: strcpy (temp_filename + len, "ccXXXXXX");
370:
371: mktemp (temp_filename);
372: temp_filename_length = strlen (temp_filename);
373: }
374:
375:
376: /* Main program. */
377:
378: int
379: main (argc, argv)
380: int argc;
381: char *argv[];
382: {
383: char *outfile = "a.out";
384: char *arg;
385: FILE *outf;
386: char *ld_file_name;
387: char *c_file_name;
388: char *B_option;
389: char *p;
390: char *prefix;
391: char **c_argv = (char **) xcalloc (sizeof (char *), argc+7);
392: char **c_ptr = c_argv;
393: char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+2);
394: char **ld1 = ld1_argv;
395: char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+5);
396: char **ld2 = ld2_argv;
397: int first_file;
398: int len;
399: int clen;
400:
401: #ifdef DEBUG
402: debug = 1;
403: vflag = 1;
404: #endif
405:
406: if (argc < 2)
407: fatal ("no arguments");
408:
409: signal (SIGQUIT, handler);
410: signal (SIGINT, handler);
411: signal (SIGALRM, handler);
412: signal (SIGHUP, handler);
413: signal (SIGSEGV, handler);
414: signal (SIGBUS, handler);
415:
416: /* Try to discover a valid linker/assembler/nm to use. */
417: len = strlen (argv[0]);
418: prefix = (char *)0;
419: if (len >= sizeof ("ld")-1)
420: {
421: p = argv[0] + len - sizeof ("ld") + 1;
422: if (strcmp (p, "ld") == 0)
423: {
424: prefix = argv[0];
425: *p = '\0';
426: }
427: }
428:
429: if (prefix == (char *)0)
430: {
431: p = strrchr (argv[0], '/');
432: if (p != (char *)0)
433: {
434: prefix = argv[0];
435: p[1] = '\0';
436: }
437:
438: #ifdef STANDARD_EXEC_PREFIX
439: else if (access (STANDARD_EXEC_PREFIX, X_OK) == 0)
440: prefix = STANDARD_EXEC_PREFIX;
441: #endif
442:
443: #ifdef MD_EXEC_PREFIX
444: else if (access (MD_EXEC_PREFIX, X_OK) == 0)
445: prefix = MD_EXEC_PREFIX;
446: #endif
447:
448: else if (access ("/usr/ccs/gcc", X_OK) == 0)
449: prefix = "/usr/ccs/gcc/";
450:
451: else if (access ("/usr/ccs/bin", X_OK) == 0)
452: prefix = "/usr/ccs/bin/";
453:
454: else
455: prefix = "/bin/";
456: }
457:
458: clen = len = strlen (prefix);
459:
460: #ifdef STANDARD_BIN_PREFIX
461: if (clen < sizeof (STANDARD_BIN_PREFIX) - 1)
462: clen = sizeof (STANDARD_BIN_PREFIX) - 1;
463: #endif
464:
465: ld_file_name = xcalloc (len + sizeof ("real-ld"), 1);
466: c_file_name = xcalloc (clen + sizeof ("gcc"), 1);
467: nm_file_name = xcalloc (len + sizeof ("gnm"), 1);
468: B_option = xcalloc (len + sizeof ("-B"), 1);
469:
470: memcpy (ld_file_name, prefix, len);
471: strcpy (ld_file_name + len, "real-ld");
472: if (access (ld_file_name, X_OK) < 0)
473: {
474: strcpy (ld_file_name + len, "gld");
475: if (access (ld_file_name, X_OK) < 0)
476: {
477: free (ld_file_name);
478: #ifdef REAL_LD_FILE_NAME
479: ld_file_name = REAL_LD_FILE_NAME;
480: #else
481: ld_file_name = (access ("/usr/bin/ld", X_OK) == 0) ? "/usr/bin/ld" : "/bin/ld";
482: #endif
483: }
484: }
485:
486: memcpy (c_file_name, prefix, len);
487: strcpy (c_file_name + len, "gcc");
488: if (access (c_file_name, X_OK) < 0)
489: {
490: #ifdef STANDARD_BIN_PREFIX
491: strcpy (c_file_name, STANDARD_BIN_PREFIX);
492: strcat (c_file_name, "gcc");
493: if (access (c_file_name, X_OK) < 0)
494: #endif
495: {
496: #ifdef STANDARD_EXEC_PREFIX
497: strcpy (c_file_name, STANDARD_EXEC_PREFIX);
498: strcat (c_file_name, "gcc");
499: if (access (c_file_name, X_OK) < 0)
500: #endif
501: {
502: strcpy (c_file_name, "gcc");
503: }
504: }
505: }
506:
507: memcpy (nm_file_name, prefix, len);
508: strcpy (nm_file_name + len, "nm");
509: if (access (nm_file_name, X_OK) < 0)
510: {
511: strcpy (nm_file_name + len, "gnm");
512: if (access (nm_file_name, X_OK) < 0)
513: {
514: free (nm_file_name);
515: #ifdef REAL_NM_FILE_NAME
516: nm_file_name = REAL_NM_FILE_NAME;
517: #else
518: nm_file_name = (access ("/usr/bin/nm", X_OK) == 0) ? "/usr/bin/nm" : "/bin/nm";
519: #endif
520: }
521: }
522:
523: strcpy (B_option, "-B");
524: strcpy (B_option + sizeof ("-B") - 1, prefix);
525:
526: *ld1++ = *ld2++ = "ld";
527:
528: /* Make temp file names. */
529: choose_temp_base ();
530: c_file = xcalloc (temp_filename_length + sizeof (".c"), 1);
531: o_file = xcalloc (temp_filename_length + sizeof (".o"), 1);
532: sprintf (c_file, "%s.c", temp_filename);
533: sprintf (o_file, "%s.o", temp_filename);
534: *c_ptr++ = "gcc";
535: *c_ptr++ = "-c";
536: *c_ptr++ = "-o";
537: *c_ptr++ = o_file;
538:
539: /* Parse arguments. Remember output file spec, pass the rest to ld. */
540: /* After the first file, put in the c++ rt0 */
541: first_file = 1;
542: while ((arg = *++argv) != (char *)0)
543: {
544: *ld1++ = *ld2++ = arg;
545:
546: if (arg[0] == '-')
547: switch (arg[1])
548: {
549: case 'd':
550: if (!strcmp (arg, "-debug"))
551: {
552: debug = 1;
553: vflag = 1;
554: ld1--;
555: ld2--;
556: }
557: break;
558:
559: /* pass -f<xxx>, -B<xxx>, -b<xxx>, -V<xxx>, and -m<xxx>
560: options to gcc. This allows options to be passed
561: that affect search rules, and the size of pointers. */
562: case 'b':
563: case 'B':
564: case 'f':
565: case 'm':
566: case 'V':
567: if (arg[1] != '\0')
568: {
569: ld1--;
570: ld2--;
571: *c_ptr++ = arg;
572: }
573: break;
574:
575: case 'o':
576: outfile = (arg[2] == '\0') ? argv[1] : &arg[2];
577: break;
578:
579: case 'r':
580: if (arg[2] == '\0')
581: rflag = 1;
582: break;
583:
584: case 'v':
585: if (arg[2] == '\0')
586: vflag = 1;
587: break;
588: }
589:
590: else if (first_file
591: && (p = strrchr (arg, '.')) != (char *)0
592: && strcmp (p, ".o") == 0)
593: {
594: first_file = 0;
595: *ld2++ = o_file;
596: }
597: }
598:
599: *c_ptr++ = B_option;
600: *c_ptr++ = c_file;
601: *c_ptr = *ld1 = *ld2 = (char *)0;
602:
603: if (vflag)
604: {
605: fprintf (stderr, "GNU COLLECT2 version %s", version_string);
606: #ifdef TARGET_VERSION
607: TARGET_VERSION;
608: #endif
609: fprintf (stderr, "\n");
610: }
611:
612: if (debug)
613: {
614: fprintf (stderr, "prefix = %s\n", prefix);
615: fprintf (stderr, "ld_file_name = %s\n", ld_file_name);
616: fprintf (stderr, "c_file_name = %s\n", c_file_name);
617: fprintf (stderr, "nm_file_name = %s\n", nm_file_name);
618: fprintf (stderr, "B_option = %s\n", B_option);
619: fprintf (stderr, "c_file = %s\n", c_file);
620: fprintf (stderr, "o_file = %s\n", o_file);
621: }
622:
623: /* Load the program, searching all libraries.
624: Examine the namelist with nm and search it for static constructors
625: and destructors to call.
626: Write the constructor and destructor tables to a .s file and reload. */
627:
628: fork_execute (ld_file_name, ld1_argv);
629:
630: /* If -r, don't build the constructor or destructor list, just return now. */
631: if (rflag)
632: return 0;
633:
634: scan_prog_file (outfile, PASS_FIRST);
635:
636: if (debug)
637: {
638: fprintf (stderr, "%d constructor(s) found\n", constructors.number);
639: fprintf (stderr, "%d destructor(s) found\n", destructors.number);
640: }
641:
642: if (constructors.number == 0 && destructors.number == 0)
643: return 0;
644:
645: outf = fopen (c_file, "w");
646: if (outf == (FILE *)0)
647: fatal_perror ("Can't write %s", c_file);
648:
649: write_c_file (outf, c_file);
650:
651: if (fclose (outf))
652: fatal_perror ("Can't close %s", c_file);
653:
654: if (debug)
655: {
656: fprintf (stderr, "\n========== outfile = %s, c_file = %s\n", outfile, c_file);
657: write_c_file (stderr, "stderr");
658: fprintf (stderr, "========== end of c_file\n\n");
659: }
660:
661: /* Assemble the constructor and destructor tables.
662: Link the tables in with the rest of the program. */
663:
664: fork_execute (c_file_name, c_argv);
665: fork_execute (ld_file_name, ld2_argv);
666:
667: /* Let scan_prog_file do any final mods (OSF/rose needs this for
668: constructors/destructors in shared libraries. */
669: scan_prog_file (outfile, PASS_SECOND);
670:
671: maybe_unlink (c_file);
672: maybe_unlink (o_file);
673: return 0;
674: }
675:
676:
677: /* Wait for a process to finish, and exit if a non-zero status is found. */
678:
679: static void
680: do_wait (prog)
681: char *prog;
682: {
683: int status;
684:
685: wait (&status);
686: if (status)
687: {
688: int sig = status & 0x7F;
689: int ret;
690:
691: if (sig != -1 && sig != 0)
692: {
693: error ("%s terminated with signal %d [%s]%s",
694: prog,
695: sig,
696: sys_siglist[sig],
697: (status & 0200) ? ", core dumped" : "");
698:
699: my_exit (127);
700: }
701:
702: ret = ((status & 0xFF00) >> 8);
703: if (ret != -1 && ret != 0)
704: {
705: error ("%s returned %d exit status", prog, ret);
706: my_exit (ret);
707: }
708: }
709: }
710:
711:
712: /* Fork and execute a program, and wait for the reply. */
713:
714: static void
715: fork_execute (prog, argv)
716: char *prog;
717: char **argv;
718: {
719: int pid;
720: void (*int_handler) ();
721: void (*quit_handler) ();
722:
723: if (vflag || debug)
724: {
725: char **p_argv;
726: char *str;
727:
728: fprintf (stderr, "%s", prog);
729: for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++)
730: fprintf (stderr, " %s", str);
731:
732: fprintf (stderr, "\n");
733: }
734:
735: fflush (stdout);
736: fflush (stderr);
737:
738: pid = vfork ();
739: if (pid == -1)
740: fatal_perror ("vfork");
741:
742: if (pid == 0) /* child context */
743: {
744: execvp (prog, argv);
745: fatal_perror ("Execute %s", prog);
746: }
747:
748: int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
749: quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
750:
751: do_wait (prog);
752:
753: signal (SIGINT, int_handler);
754: signal (SIGQUIT, quit_handler);
755: }
756:
757:
758: /* Unlink a file unless we are debugging. */
759:
760: static void
761: maybe_unlink (file)
762: char *file;
763: {
764: if (!debug)
765: unlink (file);
766: else
767: fprintf (stderr, "[Leaving %s]\n", file);
768: }
769:
770:
771: /* Add a name to a linked list. */
772:
773: static void
774: add_to_list (head_ptr, name)
775: struct head *head_ptr;
776: char *name;
777: {
778: struct id *newid = (struct id *) xcalloc (sizeof (*newid) + strlen (name), 1);
779: static long sequence_number = 0;
780: newid->sequence = ++sequence_number;
781: strcpy (newid->name, name);
782:
783: if (head_ptr->first)
784: head_ptr->last->next = newid;
785: else
786: head_ptr->first = newid;
787:
788: head_ptr->last = newid;
789: head_ptr->number++;
790: }
791:
792: /* Write: `prefix', the names on list LIST, `suffix'. */
793:
794: static void
795: write_list (stream, prefix, list)
796: FILE *stream;
797: char *prefix;
798: struct id *list;
799: {
800: while (list)
801: {
802: fprintf (stream, "%sx%d,\n", prefix, list->sequence);
803: list = list->next;
804: }
805: }
806:
807: static void
808: write_list_with_asm (stream, prefix, list)
809: FILE *stream;
810: char *prefix;
811: struct id *list;
812: {
813: while (list)
814: {
815: fprintf (stream, "%sx%d asm (\"%s\");\n",
816: prefix, list->sequence, list->name);
817: list = list->next;
818: }
819: }
820:
821: /* Write the constructor/destructor tables. */
822:
823: static void
824: write_c_file (stream, name)
825: FILE *stream;
826: char *name;
827: {
828: /* Write the tables as C code */
829:
830: fprintf (stream, "typedef void entry_pt();\n\n");
831:
832: write_list_with_asm (stream, "entry_pt ", constructors.first);
833:
834: fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
835: fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number);
836: write_list (stream, "\t", constructors.first);
837: fprintf (stream, "\t0\n};\n\n");
838:
839: write_list_with_asm (stream, "entry_pt ", destructors.first);
840:
841: fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
842: fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number);
843: write_list (stream, "\t", destructors.first);
844: fprintf (stream, "\t0\n};\n\n");
845:
846: fprintf (stream, "extern entry_pt __main;\n");
847: fprintf (stream, "entry_pt *__main_reference = __main;\n\n");
848: }
849:
850:
851: #ifndef OBJECT_FORMAT_ROSE
852:
853: /* OSF/rose specific version to scan the name list of the loaded
854: program for the symbols g++ uses for static constructors and
855: destructors.
856:
857: The constructor table begins at __CTOR_LIST__ and contains a count
858: of the number of pointers (or -1 if the constructors are built in a
859: separate section by the linker), followed by the pointers to the
860: constructor functions, terminated with a null pointer. The
861: destructor table has the same format, and begins at __DTOR_LIST__. */
862:
863: static void
864: scan_prog_file (prog_name, which_pass)
865: char *prog_name;
866: enum pass which_pass;
867: {
868: void (*int_handler) ();
869: void (*quit_handler) ();
870: char *nm_argv[4];
871: int pid;
872: int argc = 0;
873: int pipe_fd[2];
874: char *p, buf[1024];
875: FILE *inf;
876:
877: if (which_pass != PASS_FIRST)
878: return;
879:
880: nm_argv[argc++] = "nm";
881: if (NM_FLAGS[0] != '\0')
882: nm_argv[argc++] = NM_FLAGS;
883:
884: nm_argv[argc++] = prog_name;
885: nm_argv[argc++] = (char *)0;
886:
887: if (pipe (pipe_fd) < 0)
888: fatal_perror ("pipe");
889:
890: inf = fdopen (pipe_fd[0], "r");
891: if (inf == (FILE *)0)
892: fatal_perror ("fdopen");
893:
894: /* Trace if needed. */
895: if (vflag)
896: {
897: char **p_argv;
898: char *str;
899:
900: fprintf (stderr, "%s", nm_file_name);
901: for (p_argv = &nm_argv[1]; (str = *p_argv) != (char *)0; p_argv++)
902: fprintf (stderr, " %s", str);
903:
904: fprintf (stderr, "\n");
905: }
906:
907: fflush (stdout);
908: fflush (stderr);
909:
910: /* Spawn child nm on pipe */
911: pid = vfork ();
912: if (pid == -1)
913: fatal_perror ("vfork");
914:
915: if (pid == 0) /* child context */
916: {
917: /* setup stdout */
918: if (dup2 (pipe_fd[1], 1) < 0)
919: fatal_perror ("Dup2 (%d, 1)", pipe_fd[1]);
920:
921: if (close (pipe_fd[0]) < 0)
922: fatal_perror ("Close (%d)", pipe_fd[0]);
923:
924: if (close (pipe_fd[1]) < 0)
925: fatal_perror ("Close (%d)", pipe_fd[1]);
926:
927: execv (nm_file_name, nm_argv);
928: fatal_perror ("Execute %s", nm_file_name);
929: }
930:
931: /* Parent context from here on. */
932: int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
933: quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
934:
935: if (close (pipe_fd[1]) < 0)
936: fatal_perror ("Close (%d)", pipe_fd[1]);
937:
938: if (debug)
939: fprintf (stderr, "\nnm output with constructors/destructors.\n");
940:
941: /* Read each line of nm output. */
942: while (fgets (buf, sizeof buf, inf) != (char *)0)
943: {
944: int ch, ch2;
945: char *start;
946: char *end;
947:
948: /* If it contains a constructor or destructor name, add the name
949: to the appropriate list. */
950:
951: for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
952: ;
953:
954: if (ch == '\0' || ch == '\n')
955: continue;
956:
957: /* Record where the symbol name starts. */
958: start = p;
959:
960: while ((ch = *p) == '_') /* Skip any extra '_' inserted. */
961: p++;
962:
963: /* Find end of symbol name and null-terminate it. */
964: for (end = p; (ch2 = *end) != '\0' && !isspace (ch2); end++)
965: ;
966: *end = '\0';
967:
968: if (ch == 'G')
969: {
970: if (! strncmp (p, "GLOBAL_$I$", 10))
971: add_to_list (&constructors, start);
972:
973: else if (! strncmp (p, "GLOBAL_$D$", 10))
974: add_to_list (&destructors, start);
975:
976: else /* not a constructor or destructor */
977: continue;
978: }
979:
980: else if (ch == 's' && (p - start) >= 2)
981: {
982: if (! strncmp (p, "sti__", 5))
983: add_to_list (&constructors, start);
984:
985: else if (! strncmp (p, "std__", 5))
986: add_to_list (&destructors, start);
987:
988: else /* not a constructor or destructor */
989: continue;
990: }
991:
992: else
993: continue;
994:
995: if (debug)
996: fprintf (stderr, "\t%s\n", buf);
997: }
998:
999: if (debug)
1000: fprintf (stderr, "\n");
1001:
1002: if (fclose (inf) != 0)
1003: fatal_perror ("fclose of pipe");
1004:
1005: do_wait (nm_file_name);
1006:
1007: signal (SIGINT, int_handler);
1008: signal (SIGQUIT, quit_handler);
1009: }
1010:
1011: #endif /* !OBJECT_FORMAT_ROSE */
1012:
1013:
1014: /*
1015: * OSF/rose specific stuff.
1016: */
1017:
1018: #ifdef OBJECT_FORMAT_ROSE
1019:
1020: /* Union of the various load commands */
1021:
1022: typedef union load_union
1023: {
1024: ldc_header_t hdr; /* common header */
1025: load_cmd_map_command_t map; /* map indexing other load cmds */
1026: interpreter_command_t iprtr; /* interpereter pathname */
1027: strings_command_t str; /* load commands strings section */
1028: region_command_t region; /* region load command */
1029: reloc_command_t reloc; /* relocation section */
1030: package_command_t pkg; /* package load command */
1031: symbols_command_t sym; /* symbol sections */
1032: entry_command_t ent; /* program start section */
1033: gen_info_command_t info; /* object information */
1034: func_table_command_t func; /* function constructors/destructors */
1035: } load_union_t;
1036:
1037: /* Structure to point to load command and data section in memory. */
1038:
1039: typedef struct load_all
1040: {
1041: load_union_t *load; /* load command */
1042: char *section; /* pointer to section */
1043: } load_all_t;
1044:
1045: /* Structure to contain information about a file mapped into memory. */
1046:
1047: struct file_info
1048: {
1049: char *start; /* start of map */
1050: char *name; /* filename */
1051: long size; /* size of the file */
1052: long rounded_size; /* size rounded to page boundary */
1053: int fd; /* file descriptor */
1054: int rw; /* != 0 if opened read/write */
1055: int use_mmap; /* != 0 if mmap'ed */
1056: };
1057:
1058: extern int decode_mach_o_hdr ();
1059:
1060: extern int encode_mach_o_hdr ();
1061:
1062: static void bad_header ();
1063:
1064: static void print_header ();
1065:
1066: static void print_load_command ();
1067:
1068: static void add_func_table ();
1069:
1070: static struct file_info *read_file ();
1071:
1072: static void end_file ();
1073:
1074:
1075: /* OSF/rose specific version to scan the name list of the loaded
1076: program for the symbols g++ uses for static constructors and
1077: destructors.
1078:
1079: The constructor table begins at __CTOR_LIST__ and contains a count
1080: of the number of pointers (or -1 if the constructors are built in a
1081: separate section by the linker), followed by the pointers to the
1082: constructor functions, terminated with a null pointer. The
1083: destructor table has the same format, and begins at __DTOR_LIST__. */
1084:
1085: static void
1086: scan_prog_file (prog_name, which_pass)
1087: char *prog_name;
1088: enum pass which_pass;
1089: {
1090: char *obj;
1091: mo_header_t hdr;
1092: load_all_t *load_array;
1093: load_all_t *load_end;
1094: load_all_t *load_cmd;
1095: int symbol_load_cmds;
1096: off_t offset;
1097: int i;
1098: int num_syms;
1099: int status;
1100: char *str_sect;
1101: struct file_info *obj_file;
1102: int prog_fd;
1103: mo_lcid_t cmd_strings = -1;
1104: symbol_info_t *main_sym = 0;
1105: int rw = (which_pass != PASS_FIRST);
1106:
1107: prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
1108: if (prog_fd < 0)
1109: fatal_perror ("Can't read %s", prog_name);
1110:
1111: obj_file = read_file (prog_name, prog_fd, rw);
1112: obj = obj_file->start;
1113:
1114: status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
1115: if (status != MO_HDR_CONV_SUCCESS)
1116: bad_header (status);
1117:
1118:
1119: /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
1120: since the hardware will automatically swap bytes for us on loading little endian
1121: integers. */
1122:
1123: #ifndef CROSS_COMPILE
1124: if (hdr.moh_magic != MOH_MAGIC_MSB
1125: || hdr.moh_header_version != MOH_HEADER_VERSION
1126: || hdr.moh_byte_order != OUR_BYTE_ORDER
1127: || hdr.moh_data_rep_id != OUR_DATA_REP_ID
1128: || hdr.moh_cpu_type != OUR_CPU_TYPE
1129: || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
1130: || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
1131: {
1132: fatal ("incompatibilities exist between object file & expected values.");
1133: }
1134: #endif
1135:
1136: if (debug)
1137: print_header (&hdr);
1138:
1139: offset = hdr.moh_first_cmd_off;
1140: load_end = load_array
1141: = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
1142:
1143: /* Build array of load commands, calculating the offsets */
1144: for (i = 0; i < hdr.moh_n_load_cmds; i++)
1145: {
1146: load_union_t *load_hdr; /* load command header */
1147:
1148: load_cmd = load_end++;
1149: load_hdr = (load_union_t *) (obj + offset);
1150:
1151: /* If modifing the program file, copy the header. */
1152: if (rw)
1153: {
1154: load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
1155: memcpy (ptr, load_hdr, load_hdr->hdr.ldci_cmd_size);
1156: load_hdr = ptr;
1157:
1158: /* null out old command map, because we will rewrite at the end. */
1159: if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
1160: {
1161: cmd_strings = ptr->map.lcm_ld_cmd_strings;
1162: ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
1163: }
1164: }
1165:
1166: load_cmd->load = load_hdr;
1167: if (load_hdr->hdr.ldci_section_off > 0)
1168: load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
1169:
1170: if (debug)
1171: print_load_command (load_hdr, offset, i);
1172:
1173: offset += load_hdr->hdr.ldci_cmd_size;
1174: }
1175:
1176: /* If the last command is the load command map and is not undefined,
1177: decrement the count of load commands. */
1178: if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
1179: {
1180: load_end--;
1181: hdr.moh_n_load_cmds--;
1182: }
1183:
1184: /* Go through and process each symbol table section. */
1185: symbol_load_cmds = 0;
1186: for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
1187: {
1188: load_union_t *load_hdr = load_cmd->load;
1189:
1190: if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
1191: {
1192: symbol_load_cmds++;
1193:
1194: if (debug)
1195: {
1196: char *kind = "uknown";
1197:
1198: switch (load_hdr->sym.symc_kind)
1199: {
1200: case SYMC_IMPORTS: kind = "imports"; break;
1201: case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
1202: case SYMC_STABS: kind = "stabs"; break;
1203: }
1204:
1205: fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
1206: symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
1207: }
1208:
1209: if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
1210: continue;
1211:
1212: str_sect = load_array[load_hdr->sym.symc_strings_section].section;
1213: if (str_sect == (char *)0)
1214: fatal ("string section missing");
1215:
1216: if (load_cmd->section == (char *)0)
1217: fatal ("section pointer missing");
1218:
1219: num_syms = load_hdr->sym.symc_nentries;
1220: for (i = 0; i < num_syms; i++)
1221: {
1222: symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
1223: char *name = sym->si_name.symbol_name + str_sect;
1224: char *name_start = name;
1225:
1226: if (name[0] != '_')
1227: continue;
1228:
1229: while (*++name == '_') /* skip any extra '_' inserted */
1230: ;
1231:
1232: if (rw)
1233: {
1234: if (*name != 'm' || (name - name_start) < 2
1235: || strcmp (name, "main"))
1236: continue;
1237:
1238: main_sym = sym;
1239: }
1240:
1241: else if (*name == 'G')
1242: {
1243: if (! strncmp (name, "GLOBAL_$I$", 10))
1244: add_to_list (&constructors, name_start);
1245:
1246: else if (! strncmp (name, "GLOBAL_$D$", 10))
1247: add_to_list (&destructors, name_start);
1248:
1249: else /* not a constructor or destructor */
1250: continue;
1251: }
1252:
1253: else if (*name == 's' && (name - name_start) > 2)
1254: {
1255: if (! strncmp (name, "sti__", 5))
1256: add_to_list (&constructors, name_start);
1257:
1258: else if (! strncmp (name, "std__", 5))
1259: add_to_list (&destructors, name_start);
1260:
1261: else /* not a constructor or destructor */
1262: continue;
1263: }
1264:
1265: else
1266: continue;
1267:
1268: if (debug)
1269: fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
1270: sym->si_type, sym->si_sc_type, sym->si_flags, name);
1271: }
1272: }
1273: }
1274:
1275: if (symbol_load_cmds == 0)
1276: fatal ("no symbol table found.");
1277:
1278: /* Update the program file now, rewrite header and load commands. At present,
1279: we assume that there is enough space after the last load command to insert
1280: one more. Since the first section written out is page aligned, and the
1281: number of load commands is small, this is ok for the present. */
1282:
1283: if (rw)
1284: {
1285: load_union_t *load_map;
1286: size_t size;
1287:
1288: if (cmd_strings == -1)
1289: fatal ("no cmd_strings found.");
1290:
1291: /* Add __main to initializer list. */
1292: if (main_sym != (symbol_info_t *)0)
1293: add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
1294:
1295: if (debug)
1296: fprintf (stderr, "\nUpdating header and load commands.\n\n");
1297:
1298: hdr.moh_n_load_cmds++;
1299: size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
1300:
1301: /* Create new load command map. */
1302: if (debug)
1303: fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
1304: (int)hdr.moh_n_load_cmds, (long)size);
1305:
1306: load_map = (load_union_t *) xcalloc (1, size);
1307: load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
1308: load_map->map.ldc_header.ldci_cmd_size = size;
1309: load_map->map.lcm_ld_cmd_strings = cmd_strings;
1310: load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
1311: load_array[hdr.moh_n_load_cmds-1].load = load_map;
1312:
1313: offset = hdr.moh_first_cmd_off;
1314: for (i = 0; i < hdr.moh_n_load_cmds; i++)
1315: {
1316: load_map->map.lcm_map[i] = offset;
1317: if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
1318: hdr.moh_load_map_cmd_off = offset;
1319:
1320: offset += load_array[i].load->hdr.ldci_cmd_size;
1321: }
1322:
1323: hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
1324:
1325: if (debug)
1326: print_header (&hdr);
1327:
1328: /* Write header */
1329: status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
1330: if (status != MO_HDR_CONV_SUCCESS)
1331: bad_header (status);
1332:
1333: if (debug)
1334: fprintf (stderr, "writing load commands.\n\n");
1335:
1336: /* Write load commands */
1337: offset = hdr.moh_first_cmd_off;
1338: for (i = 0; i < hdr.moh_n_load_cmds; i++)
1339: {
1340: load_union_t *load_hdr = load_array[i].load;
1341: size_t size = load_hdr->hdr.ldci_cmd_size;
1342:
1343: if (debug)
1344: print_load_command (load_hdr, offset, i);
1345:
1346: memcpy (obj + offset, load_hdr, size);
1347: offset += size;
1348: }
1349: }
1350:
1351: end_file (obj_file);
1352:
1353: if (close (prog_fd))
1354: fatal_perror ("Can't close %s", prog_name);
1355:
1356: if (debug)
1357: fprintf (stderr, "\n");
1358: }
1359:
1360:
1361: /* Add a function table to the load commands to call a function
1362: on initition or termination of the process. */
1363:
1364: static void
1365: add_func_table (hdr_p, load_array, sym, type)
1366: mo_header_t *hdr_p; /* pointer to global header */
1367: load_all_t *load_array; /* array of ptrs to load cmds */
1368: symbol_info_t *sym; /* pointer to symbol entry */
1369: int type; /* fntc_type value */
1370: {
1371: /* Add a new load command. */
1372: int num_cmds = ++hdr_p->moh_n_load_cmds;
1373: int load_index = num_cmds - 1;
1374: size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
1375: load_union_t *ptr = xcalloc (1, size);
1376: load_all_t *load_cmd;
1377: int i;
1378:
1379: /* Set the unresolved address bit in the header to force the loader to be
1380: used, since kernel exec does not call the initialization functions. */
1381: hdr_p->moh_flags |= MOH_UNRESOLVED_F;
1382:
1383: load_cmd = &load_array[load_index];
1384: load_cmd->load = ptr;
1385: load_cmd->section = (char *)0;
1386:
1387: /* Fill in func table load command. */
1388: ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
1389: ptr->func.ldc_header.ldci_cmd_size = size;
1390: ptr->func.ldc_header.ldci_section_off = 0;
1391: ptr->func.ldc_header.ldci_section_len = 0;
1392: ptr->func.fntc_type = type;
1393: ptr->func.fntc_nentries = 1;
1394:
1395: /* copy address, turn it from abs. address to (region,offset) if necessary. */
1396: /* Is the symbol already expressed as (region, offset)? */
1397: if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
1398: {
1399: ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
1400: ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
1401: }
1402:
1403: /* If not, figure out which region it's in. */
1404: else
1405: {
1406: mo_vm_addr_t addr = sym->si_value.abs_val;
1407: int found = 0;
1408:
1409: for (i = 0; i < load_index; i++)
1410: {
1411: if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
1412: {
1413: region_command_t *region_ptr = &load_array[i].load->region;
1414:
1415: if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
1416: && addr >= region_ptr->regc_addr.vm_addr
1417: && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
1418: {
1419: ptr->func.fntc_entry_loc[0].adr_lcid = i;
1420: ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
1421: found++;
1422: break;
1423: }
1424: }
1425: }
1426:
1427: if (!found)
1428: fatal ("could not convert 0x%l.8x into a region", addr);
1429: }
1430:
1431: if (debug)
1432: fprintf (stderr,
1433: "%s function, region %d, offset = %ld (0x%.8lx)\n",
1434: (type == FNTC_INITIALIZATION) ? "init" : "term",
1435: (int)ptr->func.fntc_entry_loc[i].adr_lcid,
1436: (long)ptr->func.fntc_entry_loc[i].adr_sctoff,
1437: (long)ptr->func.fntc_entry_loc[i].adr_sctoff);
1438:
1439: }
1440:
1441:
1442: /* Print the global header for an OSF/rose object. */
1443:
1444: static void
1445: print_header (hdr_ptr)
1446: mo_header_t *hdr_ptr;
1447: {
1448: fprintf (stderr, "\nglobal header:\n");
1449: fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
1450: fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
1451: fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
1452: fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
1453: fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
1454: fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
1455: fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
1456: fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
1457: fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
1458: fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
1459: fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
1460: fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
1461: fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
1462: fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
1463: fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
1464:
1465: if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
1466: fprintf (stderr, ", relocatable");
1467:
1468: if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
1469: fprintf (stderr, ", linkable");
1470:
1471: if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
1472: fprintf (stderr, ", execable");
1473:
1474: if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
1475: fprintf (stderr, ", executable");
1476:
1477: if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
1478: fprintf (stderr, ", unresolved");
1479:
1480: fprintf (stderr, "\n\n");
1481: return;
1482: }
1483:
1484:
1485: /* Print a short summary of a load command. */
1486:
1487: static void
1488: print_load_command (load_hdr, offset, number)
1489: load_union_t *load_hdr;
1490: size_t offset;
1491: int number;
1492: {
1493: mo_long_t type = load_hdr->hdr.ldci_cmd_type;
1494: char *type_str = (char *)0;
1495:
1496: switch (type)
1497: {
1498: case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
1499: case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
1500: case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
1501: case LDC_STRINGS: type_str = "STRINGS"; break;
1502: case LDC_REGION: type_str = "REGION"; break;
1503: case LDC_RELOC: type_str = "RELOC"; break;
1504: case LDC_PACKAGE: type_str = "PACKAGE"; break;
1505: case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
1506: case LDC_ENTRY: type_str = "ENTRY"; break;
1507: case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
1508: case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
1509: }
1510:
1511: fprintf (stderr,
1512: "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
1513: number,
1514: (long) load_hdr->hdr.ldci_cmd_size,
1515: (long) offset,
1516: (long) load_hdr->hdr.ldci_section_off,
1517: (long) load_hdr->hdr.ldci_section_len);
1518:
1519: if (type_str == (char *)0)
1520: fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
1521:
1522: else if (type != LDC_REGION)
1523: fprintf (stderr, ", ty: %s\n", type_str);
1524:
1525: else
1526: {
1527: char *region = "";
1528: switch (load_hdr->region.regc_usage_type)
1529: {
1530: case REG_TEXT_T: region = ", .text"; break;
1531: case REG_DATA_T: region = ", .data"; break;
1532: case REG_BSS_T: region = ", .bss"; break;
1533: case REG_GLUE_T: region = ", .glue"; break;
1534: #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
1535: case REG_RDATA_T: region = ", .rdata"; break;
1536: case REG_SDATA_T: region = ", .sdata"; break;
1537: case REG_SBSS_T: region = ", .sbss"; break;
1538: #endif
1539: }
1540:
1541: fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
1542: type_str,
1543: (long) load_hdr->region.regc_vm_addr,
1544: (long) load_hdr->region.regc_vm_size,
1545: region);
1546: }
1547:
1548: return;
1549: }
1550:
1551:
1552: /* Fatal error when {en,de}code_mach_o_header fails. */
1553:
1554: static void
1555: bad_header (status)
1556: int status;
1557: {
1558: char *msg = (char *)0;
1559:
1560: switch (status)
1561: {
1562: case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break;
1563: case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break;
1564: case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break;
1565: case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break;
1566: case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break;
1567: case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break;
1568: }
1569:
1570: if (msg == (char *)0)
1571: fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
1572: else
1573: fatal ("%s", msg);
1574: }
1575:
1576:
1577: /* Read a file into a memory buffer. */
1578:
1579: static struct file_info *
1580: read_file (name, fd, rw)
1581: char *name; /* filename */
1582: int fd; /* file descriptor */
1583: int rw; /* read/write */
1584: {
1585: struct stat stat_pkt;
1586: struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
1587: #ifdef USE_MMAP
1588: static int page_size;
1589: #endif
1590:
1591: if (fstat (fd, &stat_pkt) < 0)
1592: fatal_perror ("fstat %s", name);
1593:
1594: p->name = name;
1595: p->size = stat_pkt.st_size;
1596: p->rounded_size = stat_pkt.st_size;
1597: p->fd = fd;
1598: p->rw = rw;
1599:
1600: #ifdef USE_MMAP
1601: if (debug)
1602: fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
1603:
1604: if (page_size == 0)
1605: page_size = sysconf (_SC_PAGE_SIZE);
1606:
1607: p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
1608: p->start = mmap ((caddr_t)0,
1609: (rw) ? p->rounded_size : p->size,
1610: (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
1611: MAP_FILE | MAP_VARIABLE | MAP_SHARED,
1612: fd,
1613: 0L);
1614:
1615: if (p->start != (char *)0 && p->start != (char *)-1)
1616: p->use_mmap = 1;
1617:
1618: else
1619: #endif /* USE_MMAP */
1620: {
1621: long len;
1622:
1623: if (debug)
1624: fprintf (stderr, "read %s\n", name);
1625:
1626: p->use_mmap = 0;
1627: p->start = xmalloc (p->size);
1628: if (lseek (fd, 0L, SEEK_SET) < 0)
1629: fatal_perror ("lseek to 0 on %s", name);
1630:
1631: len = read (fd, p->start, p->size);
1632: if (len < 0)
1633: fatal_perror ("read %s", name);
1634:
1635: if (len != p->size)
1636: fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
1637: }
1638:
1639: return p;
1640: }
1641:
1642:
1643: /* Do anything necessary to write a file back from memory. */
1644:
1645: static void
1646: end_file (ptr)
1647: struct file_info *ptr; /* file information block */
1648: {
1649: #ifdef USE_MMAP
1650: if (ptr->use_mmap)
1651: {
1652: if (ptr->rw)
1653: {
1654: if (debug)
1655: fprintf (stderr, "msync %s\n", ptr->name);
1656:
1657: if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
1658: fatal_perror ("msync %s", ptr->name);
1659: }
1660:
1661: if (debug)
1662: fprintf (stderr, "munmap %s\n", ptr->name);
1663:
1664: if (munmap (ptr->start, ptr->size))
1665: fatal_perror ("munmap %s", ptr->name);
1666: }
1667: else
1668: #endif /* USE_MMAP */
1669: {
1670: if (ptr->rw)
1671: {
1672: long len;
1673:
1674: if (debug)
1675: fprintf (stderr, "write %s\n", ptr->name);
1676:
1677: if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
1678: fatal_perror ("lseek to 0 on %s", ptr->name);
1679:
1680: len = write (ptr->fd, ptr->start, ptr->size);
1681: if (len < 0)
1682: fatal_perror ("read %s", ptr->name);
1683:
1684: if (len != ptr->size)
1685: fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
1686: }
1687:
1688: free ((generic *)ptr->start);
1689: }
1690:
1691: free ((generic *)ptr);
1692: }
1693:
1694: #endif /* OBJECT_FORMAT_ROSE */
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