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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:
1.1.1.8 root 5: Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
1.1 root 6: Contributed by Chris Smith ([email protected]).
1.1.1.8 root 7: Heavily modified by Michael Meissner ([email protected]),
1.1 root 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
1.1.1.8 root 24: the Free Software Foundation, 59 Temple Place - Suite 330,
25: Boston, MA 02111-1307, USA. */
1.1 root 26:
27:
28: /* Build tables of static constructors and destructors and run ld. */
29:
1.1.1.8 root 30: #include "config.h"
1.1 root 31: #include <sys/types.h>
32: #include <stdio.h>
33: #include <ctype.h>
34: #include <errno.h>
35: #include <signal.h>
36: #include <sys/file.h>
37: #include <sys/stat.h>
1.1.1.3 root 38: #ifdef NO_WAIT_H
1.1 root 39: #include <sys/wait.h>
1.1.1.3 root 40: #endif
1.1 root 41:
1.1.1.8 root 42: #define COLLECT
43:
44: #include "demangle.h"
45: #include "obstack.h"
46:
1.1 root 47: #ifndef errno
48: extern int errno;
49: #endif
50:
1.1.1.8 root 51: #ifndef HAVE_STRERROR
52: #if defined(bsd4_4)
1.1.1.6 root 53: extern const char *const sys_errlist[];
54: #else
55: extern char *sys_errlist[];
56: #endif
57: extern int sys_nerr;
1.1.1.8 root 58: #else
59: char *strerror();
60: #endif
1.1.1.6 root 61:
1.1.1.8 root 62: /* Obstack allocation and deallocation routines. */
63: #define obstack_chunk_alloc xmalloc
64: #define obstack_chunk_free free
1.1 root 65:
1.1.1.8 root 66: #if !defined (__STDC__) && !defined (const)
1.1 root 67: #define const
68: #endif
69:
1.1.1.2 root 70: #ifdef USG
71: #define vfork fork
72: #endif
73:
1.1.1.6 root 74: /* Add prototype support. */
75: #ifndef PROTO
76: #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
77: #define PROTO(ARGS) ARGS
78: #else
79: #define PROTO(ARGS) ()
80: #endif
81: #endif
82:
1.1.1.2 root 83: #ifndef R_OK
84: #define R_OK 4
85: #define W_OK 2
86: #define X_OK 1
87: #endif
88:
1.1.1.7 root 89: #ifndef WIFSIGNALED
90: #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
91: #endif
92: #ifndef WTERMSIG
93: #define WTERMSIG(S) ((S) & 0x7f)
94: #endif
95: #ifndef WIFEXITED
96: #define WIFEXITED(S) (((S) & 0xff) == 0)
97: #endif
98: #ifndef WEXITSTATUS
99: #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
100: #endif
101:
1.1.1.2 root 102: /* On MSDOS, write temp files in current dir
103: because there's no place else we can expect to use. */
1.1.1.7 root 104: #ifdef __MSDOS__
1.1.1.2 root 105: #ifndef P_tmpdir
106: #define P_tmpdir "./"
107: #endif
108: #endif
109:
110: /* On certain systems, we have code that works by scanning the object file
111: directly. But this code uses system-specific header files and library
1.1.1.5 root 112: functions, so turn it off in a cross-compiler. Likewise, the names of
113: the utilities aren't correct for a cross-compiler; we have to hope that
114: cross-versions are in the proper directories. */
1.1.1.2 root 115:
116: #ifdef CROSS_COMPILE
1.1.1.8 root 117: #undef SUNOS4_SHARED_LIBRARIES
1.1.1.2 root 118: #undef OBJECT_FORMAT_COFF
119: #undef OBJECT_FORMAT_ROSE
1.1.1.5 root 120: #undef MD_EXEC_PREFIX
121: #undef REAL_LD_FILE_NAME
122: #undef REAL_NM_FILE_NAME
123: #undef REAL_STRIP_FILE_NAME
1.1.1.2 root 124: #endif
125:
126: /* If we can't use a special method, use the ordinary one:
127: run nm to find what symbols are present.
128: In a cross-compiler, this means you need a cross nm,
129: but that isn't quite as unpleasant as special headers. */
130:
131: #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
132: #define OBJECT_FORMAT_NONE
133: #endif
134:
135: #ifdef OBJECT_FORMAT_COFF
136:
137: #include <a.out.h>
138: #include <ar.h>
139:
140: #ifdef UMAX
141: #include <sgs.h>
142: #endif
143:
1.1.1.4 root 144: /* Many versions of ldfcn.h define these. */
145: #ifdef FREAD
1.1.1.2 root 146: #undef FREAD
147: #undef FWRITE
148: #endif
149:
150: #include <ldfcn.h>
151:
1.1.1.5 root 152: /* Some systems have an ISCOFF macro, but others do not. In some cases
153: the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
154: that either do not have an ISCOFF macro in /usr/include or for those
155: where it is wrong. */
156:
1.1.1.4 root 157: #ifndef MY_ISCOFF
158: #define MY_ISCOFF(X) ISCOFF (X)
159: #endif
160:
1.1.1.8 root 161: #ifdef XCOFF_DEBUGGING_INFO
162: #define XCOFF_SCAN_LIBS
163: #endif
164:
1.1.1.2 root 165: #endif /* OBJECT_FORMAT_COFF */
166:
1.1 root 167: #ifdef OBJECT_FORMAT_ROSE
168:
169: #ifdef _OSF_SOURCE
170: #define USE_MMAP
171: #endif
172:
173: #ifdef USE_MMAP
174: #include <sys/mman.h>
175: #endif
176:
177: #include <unistd.h>
178: #include <mach_o_format.h>
179: #include <mach_o_header.h>
180: #include <mach_o_vals.h>
181: #include <mach_o_types.h>
1.1.1.2 root 182:
1.1 root 183: #endif /* OBJECT_FORMAT_ROSE */
184:
1.1.1.2 root 185: #ifdef OBJECT_FORMAT_NONE
186:
1.1 root 187: /* Default flags to pass to nm. */
188: #ifndef NM_FLAGS
189: #define NM_FLAGS "-p"
190: #endif
191:
1.1.1.2 root 192: #endif /* OBJECT_FORMAT_NONE */
1.1.1.6 root 193:
194: /* Some systems use __main in a way incompatible with its use in gcc, in these
195: cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
196: give the same symbol without quotes for an alternative entry point. You
1.1.1.8 root 197: must define both, or neither. */
1.1.1.6 root 198: #ifndef NAME__MAIN
199: #define NAME__MAIN "__main"
200: #define SYMBOL__MAIN __main
201: #endif
202:
1.1.1.8 root 203: #if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES || defined(XCOFF_SCAN_LIBS)
204: #define SCAN_LIBRARIES
205: #endif
206:
207: #ifdef USE_COLLECT2
208: int do_collecting = 1;
209: #else
210: int do_collecting = 0;
211: #endif
1.1 root 212:
213: /* Linked lists of constructor and destructor names. */
214:
215: struct id
216: {
217: struct id *next;
218: int sequence;
219: char name[1];
220: };
221:
222: struct head
223: {
224: struct id *first;
225: struct id *last;
226: int number;
227: };
228:
229: /* Enumeration giving which pass this is for scanning the program file. */
230:
231: enum pass {
232: PASS_FIRST, /* without constructors */
1.1.1.8 root 233: PASS_OBJ, /* individual objects */
234: PASS_LIB, /* looking for shared libraries */
1.1 root 235: PASS_SECOND /* with constructors linked in */
236: };
237:
1.1.1.2 root 238: #ifndef NO_SYS_SIGLIST
1.1.1.7 root 239: #ifndef DONT_DECLARE_SYS_SIGLIST
1.1 root 240: extern char *sys_siglist[];
1.1.1.2 root 241: #endif
1.1.1.7 root 242: #endif
1.1 root 243: extern char *version_string;
244:
1.1.1.8 root 245: int vflag; /* true if -v */
1.1 root 246: static int rflag; /* true if -r */
1.1.1.3 root 247: static int strip_flag; /* true if -s */
1.1 root 248:
1.1.1.8 root 249: int debug; /* true if -debug */
250:
251: static int shared_obj; /* true if -shared */
1.1 root 252:
253: static int temp_filename_length; /* Length of temp_filename */
254: static char *temp_filename; /* Base of temp filenames */
255: static char *c_file; /* <xxx>.c for constructor/destructor list. */
256: static char *o_file; /* <xxx>.o for constructor/destructor list. */
1.1.1.8 root 257: static char *export_file; /* <xxx>.x for AIX export list. */
258: char *ldout; /* File for ld errors. */
1.1.1.5 root 259: static char *output_file; /* Output file for ld. */
1.1 root 260: static char *nm_file_name; /* pathname of nm */
1.1.1.8 root 261: static char *ldd_file_name; /* pathname of ldd (or equivalent) */
1.1.1.3 root 262: static char *strip_file_name; /* pathname of strip */
1.1.1.8 root 263: char *c_file_name; /* pathname of gcc */
264: static char *initname, *fininame; /* names of init and fini funcs */
1.1 root 265:
266: static struct head constructors; /* list of constructors found */
267: static struct head destructors; /* list of destructors found */
1.1.1.8 root 268: static struct head exports; /* list of exported symbols */
269:
270: struct obstack temporary_obstack;
271: struct obstack permanent_obstack;
272: char * temporary_firstobj;
273:
274: /* Defined in the automatically-generated underscore.c. */
275: extern int prepends_underscore;
1.1 root 276:
277: extern char *getenv ();
278: extern char *mktemp ();
1.1.1.6 root 279: extern FILE *fdopen ();
280:
281: /* Structure to hold all the directories in which to search for files to
282: execute. */
283:
284: struct prefix_list
285: {
286: char *prefix; /* String to prepend to the path. */
287: struct prefix_list *next; /* Next in linked list. */
288: };
289:
290: struct path_prefix
291: {
292: struct prefix_list *plist; /* List of prefixes to try */
293: int max_len; /* Max length of a prefix in PLIST */
294: char *name; /* Name of this list (used in config stuff) */
295: };
296:
1.1.1.8 root 297: void collect_exit PROTO((int));
298: void collect_execute PROTO((char *, char **, char *));
299: void dump_file PROTO((char *));
1.1.1.6 root 300: static void handler PROTO((int));
301: static int is_ctor_dtor PROTO((char *));
302: static void choose_temp_base PROTO((void));
303: static int is_in_prefix_list PROTO((struct path_prefix *, char *, int));
304: static char *find_a_file PROTO((struct path_prefix *, char *));
305: static void add_prefix PROTO((struct path_prefix *, char *));
306: static void prefix_from_env PROTO((char *, struct path_prefix *));
1.1.1.8 root 307: static void prefix_from_string PROTO((char *, struct path_prefix *));
1.1.1.6 root 308: static void do_wait PROTO((char *));
309: static void fork_execute PROTO((char *, char **));
310: static void maybe_unlink PROTO((char *));
311: static void add_to_list PROTO((struct head *, char *));
312: static void write_list PROTO((FILE *, char *, struct id *));
313: static void write_list_with_asm PROTO((FILE *, char *, struct id *));
314: static void write_c_file PROTO((FILE *, char *));
1.1.1.8 root 315: static void write_export_file PROTO((FILE *));
1.1.1.6 root 316: static void scan_prog_file PROTO((char *, enum pass));
1.1.1.8 root 317: static void scan_libraries PROTO((char *));
1.1 root 318:
1.1.1.8 root 319: char *xcalloc ();
320: char *xmalloc ();
1.1.1.4 root 321:
322: extern char *index ();
323: extern char *rindex ();
1.1.1.8 root 324: extern void free ();
1.1 root 325:
1.1.1.4 root 326: #ifdef NO_DUP2
1.1.1.6 root 327: int
1.1.1.4 root 328: dup2 (oldfd, newfd)
329: int oldfd;
330: int newfd;
331: {
332: int fdtmp[256];
333: int fdx = 0;
334: int fd;
335:
336: if (oldfd == newfd)
1.1.1.7 root 337: return oldfd;
1.1.1.4 root 338: close (newfd);
1.1.1.7 root 339: while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
1.1.1.4 root 340: fdtmp[fdx++] = fd;
341: while (fdx > 0)
342: close (fdtmp[--fdx]);
1.1.1.6 root 343:
1.1.1.7 root 344: return fd;
1.1.1.4 root 345: }
346: #endif
347:
1.1.1.2 root 348: char *
1.1.1.3 root 349: my_strerror (e)
1.1 root 350: int e;
351: {
352:
1.1.1.7 root 353: #ifdef HAVE_STRERROR
354: return strerror (e);
355:
356: #else
357:
358: static char buffer[30];
1.1 root 359: if (!e)
360: return "";
361:
362: if (e > 0 && e < sys_nerr)
363: return sys_errlist[e];
364:
365: sprintf (buffer, "Unknown error %d", e);
366: return buffer;
1.1.1.7 root 367: #endif
1.1 root 368: }
369:
370: /* Delete tempfiles and exit function. */
371:
1.1.1.8 root 372: void
373: collect_exit (status)
1.1 root 374: int status;
375: {
1.1.1.2 root 376: if (c_file != 0 && c_file[0])
1.1 root 377: maybe_unlink (c_file);
378:
1.1.1.2 root 379: if (o_file != 0 && o_file[0])
1.1 root 380: maybe_unlink (o_file);
381:
1.1.1.8 root 382: if (export_file != 0 && export_file[0])
383: maybe_unlink (export_file);
384:
385: if (ldout != 0 && ldout[0])
386: {
387: dump_file (ldout);
388: maybe_unlink (ldout);
389: }
390:
1.1.1.5 root 391: if (status != 0 && output_file != 0 && output_file[0])
392: maybe_unlink (output_file);
393:
1.1 root 394: exit (status);
395: }
396:
397:
398: /* Die when sys call fails. */
399:
1.1.1.8 root 400: void
1.1.1.3 root 401: fatal_perror (string, arg1, arg2, arg3)
1.1.1.7 root 402: char *string, *arg1, *arg2, *arg3;
1.1 root 403: {
404: int e = errno;
405:
1.1.1.6 root 406: fprintf (stderr, "collect2: ");
1.1.1.3 root 407: fprintf (stderr, string, arg1, arg2, arg3);
408: fprintf (stderr, ": %s\n", my_strerror (e));
1.1.1.8 root 409: collect_exit (1);
1.1 root 410: }
411:
412: /* Just die. */
413:
1.1.1.8 root 414: void
1.1.1.3 root 415: fatal (string, arg1, arg2, arg3)
1.1.1.7 root 416: char *string, *arg1, *arg2, *arg3;
1.1 root 417: {
1.1.1.6 root 418: fprintf (stderr, "collect2: ");
1.1.1.3 root 419: fprintf (stderr, string, arg1, arg2, arg3);
1.1 root 420: fprintf (stderr, "\n");
1.1.1.8 root 421: collect_exit (1);
1.1 root 422: }
423:
424: /* Write error message. */
425:
1.1.1.8 root 426: void
1.1.1.3 root 427: error (string, arg1, arg2, arg3, arg4)
1.1.1.7 root 428: char *string, *arg1, *arg2, *arg3, *arg4;
1.1 root 429: {
1.1.1.6 root 430: fprintf (stderr, "collect2: ");
1.1.1.3 root 431: fprintf (stderr, string, arg1, arg2, arg3, arg4);
1.1 root 432: fprintf (stderr, "\n");
433: }
434:
435: /* In case obstack is linked in, and abort is defined to fancy_abort,
436: provide a default entry. */
437:
438: void
439: fancy_abort ()
440: {
441: fatal ("internal error");
442: }
443:
444:
445: static void
446: handler (signo)
447: int signo;
448: {
1.1.1.6 root 449: if (c_file != 0 && c_file[0])
1.1 root 450: maybe_unlink (c_file);
451:
1.1.1.6 root 452: if (o_file != 0 && o_file[0])
1.1 root 453: maybe_unlink (o_file);
454:
1.1.1.8 root 455: if (ldout != 0 && ldout[0])
456: maybe_unlink (ldout);
457:
1.1 root 458: signal (signo, SIG_DFL);
459: kill (getpid (), signo);
460: }
461:
462:
1.1.1.8 root 463: char *
1.1 root 464: xcalloc (size1, size2)
465: int size1, size2;
466: {
1.1.1.8 root 467: char *ptr = (char *) calloc (size1, size2);
1.1 root 468: if (ptr)
469: return ptr;
470:
1.1.1.3 root 471: fatal ("out of memory");
1.1.1.8 root 472: return (char *)0;
1.1 root 473: }
474:
1.1.1.8 root 475: char *
1.1 root 476: xmalloc (size)
1.1.1.8 root 477: unsigned size;
1.1 root 478: {
1.1.1.8 root 479: char *ptr = (char *) malloc (size);
1.1 root 480: if (ptr)
481: return ptr;
482:
1.1.1.3 root 483: fatal ("out of memory");
1.1.1.8 root 484: return (char *)0;
485: }
486:
487: char *
488: xrealloc (ptr, size)
489: char *ptr;
490: unsigned size;
491: {
492: register char *value = (char *) realloc (ptr, size);
493: if (value == 0)
494: fatal ("virtual memory exhausted");
495: return value;
496: }
497:
498: int
499: file_exists (name)
500: char *name;
501: {
502: return access (name, R_OK) == 0;
1.1 root 503: }
504:
1.1.1.2 root 505: /* Make a copy of a string INPUT with size SIZE. */
506:
507: char *
508: savestring (input, size)
509: char *input;
510: int size;
511: {
512: char *output = (char *) xmalloc (size + 1);
1.1.1.3 root 513: bcopy (input, output, size);
514: output[size] = 0;
1.1.1.2 root 515: return output;
516: }
517:
1.1.1.8 root 518: void
519: dump_file (name)
520: char *name;
521: {
522: FILE *stream = fopen (name, "r");
523: int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
524:
525: if (stream == 0)
526: return;
527: while (1)
528: {
529: int c;
530: while (c = getc (stream),
531: c != EOF && (isalnum (c) || c == '_' || c == '$' || c == '.'))
532: obstack_1grow (&temporary_obstack, c);
533: if (obstack_object_size (&temporary_obstack) > 0)
534: {
535: char *word, *p, *result;
536: obstack_1grow (&temporary_obstack, '\0');
537: word = obstack_finish (&temporary_obstack);
538:
539: if (*word == '.')
540: ++word, putc ('.', stderr);
541: p = word;
542: if (*p == '_' && prepends_underscore)
543: ++p;
544:
545: if (no_demangle)
546: result = 0;
547: else
548: result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
549:
550: if (result)
551: {
552: int diff;
553: fputs (result, stderr);
554:
555: diff = strlen (word) - strlen (result);
556: while (diff > 0)
557: --diff, putc (' ', stderr);
558: while (diff < 0 && c == ' ')
559: ++diff, c = getc (stream);
560:
561: free (result);
562: }
563: else
564: fputs (word, stderr);
565:
566: fflush (stderr);
567: obstack_free (&temporary_obstack, temporary_firstobj);
568: }
569: if (c == EOF)
570: break;
571: putc (c, stderr);
572: }
573: }
574:
1.1.1.2 root 575: /* Decide whether the given symbol is:
576: a constructor (1), a destructor (2), or neither (0). */
577:
578: static int
579: is_ctor_dtor (s)
580: char *s;
581: {
582: struct names { char *name; int len; int ret; int two_underscores; };
583:
584: register struct names *p;
585: register int ch;
586: register char *orig_s = s;
587:
588: static struct names special[] = {
589: #ifdef NO_DOLLAR_IN_LABEL
1.1.1.5 root 590: #ifdef NO_DOT_IN_LABEL
1.1.1.6 root 591: { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
592: { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
1.1.1.5 root 593: #else
1.1.1.2 root 594: { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
595: { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
1.1.1.5 root 596: #endif
1.1.1.2 root 597: #else
598: { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
1.1.1.6 root 599: { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
1.1.1.2 root 600: #endif
1.1.1.8 root 601: { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
602: { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
1.1.1.4 root 603: #ifdef CFRONT_LOSSAGE /* Don't collect cfront initialization functions.
604: cfront has its own linker procedure to collect them;
605: if collect2 gets them too, they get collected twice
606: when the cfront procedure is run and the compiler used
607: for linking happens to be GCC. */
1.1.1.2 root 608: { "sti__", sizeof ("sti__")-1, 1, 1 },
609: { "std__", sizeof ("std__")-1, 2, 1 },
1.1.1.4 root 610: #endif /* CFRONT_LOSSAGE */
1.1.1.2 root 611: { NULL, 0, 0, 0 }
612: };
613:
614: while ((ch = *s) == '_')
615: ++s;
616:
617: if (s == orig_s)
618: return 0;
619:
620: for (p = &special[0]; p->len > 0; p++)
621: {
622: if (ch == p->name[0]
623: && (!p->two_underscores || ((s - orig_s) >= 2))
624: && strncmp(s, p->name, p->len) == 0)
625: {
626: return p->ret;
627: }
628: }
629: return 0;
630: }
631:
1.1 root 632:
633: /* Compute a string to use as the base of all temporary file names.
634: It is substituted for %g. */
635:
636: static void
637: choose_temp_base ()
638: {
639: char *base = getenv ("TMPDIR");
640: int len;
641:
642: if (base == (char *)0)
643: {
644: #ifdef P_tmpdir
645: if (access (P_tmpdir, R_OK | W_OK) == 0)
646: base = P_tmpdir;
647: #endif
648: if (base == (char *)0)
649: {
650: if (access ("/usr/tmp", R_OK | W_OK) == 0)
651: base = "/usr/tmp/";
652: else
653: base = "/tmp/";
654: }
655: }
656:
657: len = strlen (base);
1.1.1.5 root 658: temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1);
1.1 root 659: strcpy (temp_filename, base);
660: if (len > 0 && temp_filename[len-1] != '/')
661: temp_filename[len++] = '/';
662: strcpy (temp_filename + len, "ccXXXXXX");
663:
664: mktemp (temp_filename);
665: temp_filename_length = strlen (temp_filename);
666: }
1.1.1.5 root 667:
668: /* Routine to add variables to the environment. */
669:
670: #ifndef HAVE_PUTENV
671:
1.1.1.6 root 672: int
1.1.1.5 root 673: putenv (str)
674: char *str;
675: {
676: #ifndef VMS /* nor about VMS */
677:
678: extern char **environ;
679: char **old_environ = environ;
680: char **envp;
681: int num_envs = 0;
682: int name_len = 1;
683: char *p = str;
684: int ch;
685:
686: while ((ch = *p++) != '\0' && ch != '=')
687: name_len++;
688:
689: if (!ch)
690: abort ();
691:
692: /* Search for replacing an existing environment variable, and
693: count the number of total environment variables. */
694: for (envp = old_environ; *envp; envp++)
695: {
696: num_envs++;
697: if (!strncmp (str, *envp, name_len))
698: {
699: *envp = str;
1.1.1.6 root 700: return 0;
1.1.1.5 root 701: }
702: }
703:
704: /* Add a new environment variable */
705: environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
706: *environ = str;
1.1.1.7 root 707: bcopy ((char *) old_environ, (char *) (environ + 1),
708: sizeof (char *) * (num_envs+1));
709:
1.1.1.6 root 710: return 0;
1.1.1.5 root 711: #endif /* VMS */
712: }
1.1 root 713:
1.1.1.5 root 714: #endif /* HAVE_PUTENV */
715:
716: /* By default, colon separates directories in a path. */
717: #ifndef PATH_SEPARATOR
718: #define PATH_SEPARATOR ':'
719: #endif
720:
721: /* We maintain two prefix lists: one from COMPILER_PATH environment variable
722: and one from the PATH variable. */
723:
724: static struct path_prefix cpath, path;
725:
726: #ifdef CROSS_COMPILE
727: /* This is the name of the target machine. We use it to form the name
728: of the files to execute. */
729:
730: static char *target_machine = TARGET_MACHINE;
731: #endif
732:
733: /* Names under which we were executed. Never return one of those files in our
734: searches. */
735:
1.1.1.6 root 736: static struct path_prefix our_file_names;
1.1.1.5 root 737:
1.1.1.6 root 738: /* Determine if STRING is in PPREFIX.
739:
740: This utility is currently only used to look up file names. Prefix lists
741: record directory names. This matters to us because the latter has a
742: trailing slash, so I've added a flag to handle both. */
743:
744: static int
745: is_in_prefix_list (pprefix, string, filep)
746: struct path_prefix *pprefix;
747: char *string;
748: int filep;
749: {
750: struct prefix_list *pl;
751:
752: if (filep)
753: {
754: int len = strlen (string);
755:
756: for (pl = pprefix->plist; pl; pl = pl->next)
757: {
758: if (strncmp (pl->prefix, string, len) == 0
759: && strcmp (pl->prefix + len, "/") == 0)
760: return 1;
761: }
762: }
763: else
764: {
765: for (pl = pprefix->plist; pl; pl = pl->next)
766: {
767: if (strcmp (pl->prefix, string) == 0)
768: return 1;
769: }
770: }
771:
772: return 0;
773: }
774:
1.1.1.5 root 775: /* Search for NAME using prefix list PPREFIX. We only look for executable
776: files.
777:
778: Return 0 if not found, otherwise return its name, allocated with malloc. */
779:
780: static char *
781: find_a_file (pprefix, name)
782: struct path_prefix *pprefix;
783: char *name;
784: {
785: char *temp;
786: struct prefix_list *pl;
787: int len = pprefix->max_len + strlen (name) + 1;
788:
789: #ifdef EXECUTABLE_SUFFIX
790: len += strlen (EXECUTABLE_SUFFIX);
791: #endif
792:
793: temp = xmalloc (len);
794:
795: /* Determine the filename to execute (special case for absolute paths). */
796:
797: if (*name == '/')
798: {
799: if (access (name, X_OK) == 0)
800: {
801: strcpy (temp, name);
802: return temp;
803: }
804: }
805: else
806: for (pl = pprefix->plist; pl; pl = pl->next)
807: {
808: strcpy (temp, pl->prefix);
809: strcat (temp, name);
1.1.1.6 root 810: if (! is_in_prefix_list (&our_file_names, temp, 1)
1.1.1.5 root 811: /* This is a kludge, but there seems no way around it. */
812: && strcmp (temp, "./ld") != 0
813: && access (temp, X_OK) == 0)
814: return temp;
815:
816: #ifdef EXECUTABLE_SUFFIX
817: /* Some systems have a suffix for executable files.
818: So try appending that. */
819: strcat (temp, EXECUTABLE_SUFFIX);
1.1.1.6 root 820: if (! is_in_prefix_list (&our_file_names, temp, 1)
1.1.1.5 root 821: && access (temp, X_OK) == 0)
822: return temp;
823: #endif
824: }
825:
826: free (temp);
827: return 0;
828: }
829:
830: /* Add an entry for PREFIX to prefix list PPREFIX. */
831:
832: static void
833: add_prefix (pprefix, prefix)
834: struct path_prefix *pprefix;
835: char *prefix;
836: {
837: struct prefix_list *pl, **prev;
838: int len;
839:
840: if (pprefix->plist)
841: {
842: for (pl = pprefix->plist; pl->next; pl = pl->next)
843: ;
844: prev = &pl->next;
845: }
846: else
847: prev = &pprefix->plist;
848:
849: /* Keep track of the longest prefix */
850:
851: len = strlen (prefix);
852: if (len > pprefix->max_len)
853: pprefix->max_len = len;
854:
855: pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
856: pl->prefix = savestring (prefix, len);
857:
858: if (*prev)
859: pl->next = *prev;
860: else
861: pl->next = (struct prefix_list *) 0;
862: *prev = pl;
863: }
864:
865: /* Take the value of the environment variable ENV, break it into a path, and
866: add of the entries to PPREFIX. */
867:
868: static void
869: prefix_from_env (env, pprefix)
870: char *env;
871: struct path_prefix *pprefix;
872: {
873: char *p = getenv (env);
874:
875: if (p)
1.1.1.8 root 876: prefix_from_string (p, pprefix);
877: }
878:
879: static void
880: prefix_from_string (p, pprefix)
881: char *p;
882: struct path_prefix *pprefix;
883: {
884: char *startp, *endp;
885: char *nstore = (char *) xmalloc (strlen (p) + 3);
1.1.1.5 root 886:
1.1.1.8 root 887: startp = endp = p;
888: while (1)
889: {
890: if (*endp == PATH_SEPARATOR || *endp == 0)
1.1.1.5 root 891: {
1.1.1.8 root 892: strncpy (nstore, startp, endp-startp);
893: if (endp == startp)
1.1.1.5 root 894: {
1.1.1.8 root 895: strcpy (nstore, "./");
896: }
897: else if (endp[-1] != '/')
898: {
899: nstore[endp-startp] = '/';
900: nstore[endp-startp+1] = 0;
1.1.1.5 root 901: }
902: else
1.1.1.8 root 903: nstore[endp-startp] = 0;
904:
905: add_prefix (pprefix, nstore);
906: if (*endp == 0)
907: break;
908: endp = startp = endp + 1;
1.1.1.5 root 909: }
1.1.1.8 root 910: else
911: endp++;
1.1.1.5 root 912: }
913: }
1.1 root 914:
915: /* Main program. */
916:
917: int
918: main (argc, argv)
919: int argc;
920: char *argv[];
921: {
1.1.1.5 root 922: char *ld_suffix = "ld";
923: char *full_ld_suffix = ld_suffix;
924: char *real_ld_suffix = "real-ld";
925: char *full_real_ld_suffix = real_ld_suffix;
1.1.1.8 root 926: char *collect_ld_suffix = "collect-ld";
1.1.1.5 root 927: char *nm_suffix = "nm";
928: char *full_nm_suffix = nm_suffix;
929: char *gnm_suffix = "gnm";
930: char *full_gnm_suffix = gnm_suffix;
1.1.1.8 root 931: #ifdef LDD_SUFFIX
932: char *ldd_suffix = LDD_SUFFIX;
933: char *full_ldd_suffix = ldd_suffix;
934: #endif
1.1.1.5 root 935: char *strip_suffix = "strip";
936: char *full_strip_suffix = strip_suffix;
937: char *gstrip_suffix = "gstrip";
938: char *full_gstrip_suffix = gstrip_suffix;
1.1 root 939: char *arg;
1.1.1.8 root 940: FILE *outf, *exportf;
1.1 root 941: char *ld_file_name;
1.1.1.6 root 942: char *collect_name;
943: char *collect_names;
1.1 root 944: char *p;
1.1.1.2 root 945: char **c_argv;
946: char **c_ptr;
1.1.1.8 root 947: char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+3);
1.1 root 948: char **ld1 = ld1_argv;
1.1.1.8 root 949: char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+6);
1.1 root 950: char **ld2 = ld2_argv;
1.1.1.8 root 951: char **object_lst = (char **) xcalloc (sizeof (char *), argc);
952: char **object = object_lst;
1.1 root 953: int first_file;
1.1.1.2 root 954: int num_c_args = argc+7;
1.1 root 955:
956: #ifdef DEBUG
957: debug = 1;
958: vflag = 1;
959: #endif
960:
1.1.1.5 root 961: output_file = "a.out";
962:
1.1.1.8 root 963: obstack_begin (&temporary_obstack, 0);
964: obstack_begin (&permanent_obstack, 0);
965: temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
966: current_demangling_style = gnu_demangling;
967:
1.1.1.5 root 968: /* We must check that we do not call ourselves in an infinite
1.1.1.6 root 969: recursion loop. We append the name used for us to the COLLECT_NAMES
970: environment variable.
1.1.1.5 root 971:
1.1.1.6 root 972: In practice, collect will rarely invoke itself. This can happen now
973: that we are no longer called gld. A perfect example is when running
974: gcc in a build directory that has been installed. When looking for
975: ld's, we'll find our installed version and believe that's the real ld. */
976:
977: /* We must also append COLLECT_NAME to COLLECT_NAMES to watch for the
978: previous version of collect (the one that used COLLECT_NAME and only
979: handled two levels of recursion). If we don't we may mutually recurse
980: forever. This can happen (I think) when bootstrapping the old version
981: and a new one is installed (rare, but we should handle it).
982: ??? Hopefully references to COLLECT_NAME can be removed at some point. */
983:
984: collect_name = (char *) getenv ("COLLECT_NAME");
985: collect_names = (char *) getenv ("COLLECT_NAMES");
986:
987: p = (char *) xmalloc (strlen ("COLLECT_NAMES=")
988: + (collect_name ? strlen (collect_name) + 1 : 0)
989: + (collect_names ? strlen (collect_names) + 1 : 0)
990: + strlen (argv[0]) + 1);
991: strcpy (p, "COLLECT_NAMES=");
992: if (collect_name != 0)
993: sprintf (p + strlen (p), "%s%c", collect_name, PATH_SEPARATOR);
994: if (collect_names != 0)
995: sprintf (p + strlen (p), "%s%c", collect_names, PATH_SEPARATOR);
996: strcat (p, argv[0]);
997: putenv (p);
998:
999: prefix_from_env ("COLLECT_NAMES", &our_file_names);
1.1.1.5 root 1000:
1.1.1.6 root 1001: /* Set environment variable COLLECT_NAME to our name so the previous version
1002: of collect won't find us. If it does we'll mutually recurse forever.
1003: This can happen when bootstrapping the new version and an old version is
1004: installed.
1005: ??? Hopefully this bit of code can be removed at some point. */
1.1.1.5 root 1006:
1.1.1.6 root 1007: p = xmalloc (strlen ("COLLECT_NAME=") + strlen (argv[0]) + 1);
1008: sprintf (p, "COLLECT_NAME=%s", argv[0]);
1.1.1.5 root 1009: putenv (p);
1010:
1.1.1.2 root 1011: p = (char *) getenv ("COLLECT_GCC_OPTIONS");
1012: if (p)
1013: while (*p)
1014: {
1015: char *q = p;
1016: while (*q && *q != ' ') q++;
1.1.1.3 root 1017: if (*p == '-' && p[1] == 'm')
1.1.1.2 root 1018: num_c_args++;
1019:
1020: if (*q) q++;
1021: p = q;
1022: }
1023:
1024: c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
1025:
1.1 root 1026: if (argc < 2)
1027: fatal ("no arguments");
1028:
1.1.1.5 root 1029: #ifdef SIGQUIT
1.1.1.4 root 1030: if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
1031: signal (SIGQUIT, handler);
1.1.1.5 root 1032: #endif
1.1.1.4 root 1033: if (signal (SIGINT, SIG_IGN) != SIG_IGN)
1034: signal (SIGINT, handler);
1.1.1.5 root 1035: #ifdef SIGALRM
1.1.1.4 root 1036: if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
1037: signal (SIGALRM, handler);
1.1.1.5 root 1038: #endif
1039: #ifdef SIGHUP
1.1.1.4 root 1040: if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
1041: signal (SIGHUP, handler);
1.1.1.5 root 1042: #endif
1.1.1.4 root 1043: if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
1044: signal (SIGSEGV, handler);
1.1.1.5 root 1045: #ifdef SIGBUS
1.1.1.4 root 1046: if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
1047: signal (SIGBUS, handler);
1.1 root 1048: #endif
1049:
1.1.1.5 root 1050: /* Extract COMPILER_PATH and PATH into our prefix list. */
1051: prefix_from_env ("COMPILER_PATH", &cpath);
1052: prefix_from_env ("PATH", &path);
1.1 root 1053:
1.1.1.5 root 1054: #ifdef CROSS_COMPILE
1055: /* If we look for a program in the compiler directories, we just use
1056: the short name, since these directories are already system-specific.
1057: But it we look for a took in the system directories, we need to
1058: qualify the program name with the target machine. */
1059:
1060: full_ld_suffix
1061: = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
1062: strcpy (full_ld_suffix, target_machine);
1063: strcat (full_ld_suffix, "-");
1064: strcat (full_ld_suffix, ld_suffix);
1065:
1066: full_real_ld_suffix
1067: = xcalloc (strlen (real_ld_suffix) + strlen (target_machine) + 2, 1);
1068: strcpy (full_real_ld_suffix, target_machine);
1069: strcat (full_real_ld_suffix, "-");
1070: strcat (full_real_ld_suffix, real_ld_suffix);
1071:
1.1.1.6 root 1072: #if 0
1.1.1.5 root 1073: full_gld_suffix
1074: = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
1075: strcpy (full_gld_suffix, target_machine);
1076: strcat (full_gld_suffix, "-");
1077: strcat (full_gld_suffix, gld_suffix);
1.1.1.6 root 1078: #endif
1.1.1.5 root 1079:
1080: full_nm_suffix
1081: = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
1082: strcpy (full_nm_suffix, target_machine);
1083: strcat (full_nm_suffix, "-");
1084: strcat (full_nm_suffix, nm_suffix);
1085:
1086: full_gnm_suffix
1087: = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
1088: strcpy (full_gnm_suffix, target_machine);
1089: strcat (full_gnm_suffix, "-");
1090: strcat (full_gnm_suffix, gnm_suffix);
1091:
1.1.1.8 root 1092: #ifdef LDD_SUFFIX
1093: full_ldd_suffix
1094: = xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1);
1095: strcpy (full_ldd_suffix, target_machine);
1096: strcat (full_ldd_suffix, "-");
1097: strcat (full_ldd_suffix, ldd_suffix);
1098: #endif
1099:
1.1.1.5 root 1100: full_strip_suffix
1101: = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
1102: strcpy (full_strip_suffix, target_machine);
1103: strcat (full_strip_suffix, "-");
1104: strcat (full_strip_suffix, strip_suffix);
1105:
1106: full_gstrip_suffix
1107: = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
1108: strcpy (full_gstrip_suffix, target_machine);
1109: strcat (full_gstrip_suffix, "-");
1110: strcat (full_gstrip_suffix, gstrip_suffix);
1111: #endif /* CROSS_COMPILE */
1112:
1113: /* Try to discover a valid linker/nm/strip to use. */
1114:
1.1.1.7 root 1115: /* Maybe we know the right file to use (if not cross). */
1116: #ifdef REAL_LD_FILE_NAME
1117: ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
1118: if (ld_file_name == 0)
1119: #endif
1.1.1.8 root 1120: /* Search the (target-specific) compiler dirs for ld'. */
1121: ld_file_name = find_a_file (&cpath, real_ld_suffix);
1122: /* Likewise for `collect-ld'. */
1.1.1.5 root 1123: if (ld_file_name == 0)
1.1.1.8 root 1124: ld_file_name = find_a_file (&cpath, collect_ld_suffix);
1.1.1.7 root 1125: /* Search the compiler directories for `ld'. We have protection against
1126: recursive calls in find_a_file. */
1.1.1.5 root 1127: if (ld_file_name == 0)
1.1.1.7 root 1128: ld_file_name = find_a_file (&cpath, ld_suffix);
1.1.1.5 root 1129: /* Search the ordinary system bin directories
1130: for `ld' (if native linking) or `TARGET-ld' (if cross). */
1131: if (ld_file_name == 0)
1132: ld_file_name = find_a_file (&path, full_ld_suffix);
1133:
1.1.1.6 root 1134: /* If we've invoked ourselves, try again with LD_FILE_NAME. */
1135:
1136: if (collect_names != 0)
1137: {
1138: if (ld_file_name != 0)
1139: {
1140: argv[0] = ld_file_name;
1141: execvp (argv[0], argv);
1142: }
1143: fatal ("cannot find `ld'");
1144: }
1145:
1.1.1.7 root 1146: #ifdef REAL_NM_FILE_NAME
1147: nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
1148: if (nm_file_name == 0)
1149: #endif
1.1.1.5 root 1150: nm_file_name = find_a_file (&cpath, gnm_suffix);
1151: if (nm_file_name == 0)
1152: nm_file_name = find_a_file (&path, full_gnm_suffix);
1153: if (nm_file_name == 0)
1154: nm_file_name = find_a_file (&cpath, nm_suffix);
1155: if (nm_file_name == 0)
1156: nm_file_name = find_a_file (&path, full_nm_suffix);
1.1.1.3 root 1157:
1.1.1.8 root 1158: #ifdef LDD_SUFFIX
1159: ldd_file_name = find_a_file (&cpath, ldd_suffix);
1160: if (ldd_file_name == 0)
1161: ldd_file_name = find_a_file (&path, full_ldd_suffix);
1162: #endif
1163:
1.1.1.7 root 1164: #ifdef REAL_STRIP_FILE_NAME
1165: strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1166: if (strip_file_name == 0)
1167: #endif
1.1.1.5 root 1168: strip_file_name = find_a_file (&cpath, gstrip_suffix);
1169: if (strip_file_name == 0)
1170: strip_file_name = find_a_file (&path, full_gstrip_suffix);
1171: if (strip_file_name == 0)
1172: strip_file_name = find_a_file (&cpath, strip_suffix);
1173: if (strip_file_name == 0)
1174: strip_file_name = find_a_file (&path, full_strip_suffix);
1.1 root 1175:
1.1.1.3 root 1176: /* Determine the full path name of the C compiler to use. */
1.1.1.2 root 1177: c_file_name = getenv ("COLLECT_GCC");
1.1.1.4 root 1178: if (c_file_name == 0)
1.1 root 1179: {
1.1.1.5 root 1180: #ifdef CROSS_COMPILE
1181: c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
1182: strcpy (c_file_name, target_machine);
1183: strcat (c_file_name, "-gcc");
1.1 root 1184: #else
1.1.1.5 root 1185: c_file_name = "gcc";
1.1.1.3 root 1186: #endif
1187: }
1188:
1.1.1.5 root 1189: p = find_a_file (&cpath, c_file_name);
1.1 root 1190:
1.1.1.5 root 1191: /* Here it should be safe to use the system search path since we should have
1192: already qualified the name of the compiler when it is needed. */
1193: if (p == 0)
1194: p = find_a_file (&path, c_file_name);
1195:
1196: if (p)
1197: c_file_name = p;
1198:
1199: *ld1++ = *ld2++ = ld_file_name;
1.1 root 1200:
1201: /* Make temp file names. */
1202: choose_temp_base ();
1203: c_file = xcalloc (temp_filename_length + sizeof (".c"), 1);
1204: o_file = xcalloc (temp_filename_length + sizeof (".o"), 1);
1.1.1.8 root 1205: export_file = xmalloc (temp_filename_length + sizeof (".x"));
1206: ldout = xmalloc (temp_filename_length + sizeof (".ld"));
1207: sprintf (ldout, "%s.ld", temp_filename);
1.1 root 1208: sprintf (c_file, "%s.c", temp_filename);
1209: sprintf (o_file, "%s.o", temp_filename);
1.1.1.8 root 1210: sprintf (export_file, "%s.x", temp_filename);
1.1.1.2 root 1211: *c_ptr++ = c_file_name;
1.1 root 1212: *c_ptr++ = "-c";
1213: *c_ptr++ = "-o";
1214: *c_ptr++ = o_file;
1215:
1.1.1.2 root 1216: /* !!! When GCC calls collect2,
1217: it does not know whether it is calling collect2 or ld.
1218: So collect2 cannot meaningfully understand any options
1219: except those ld understands.
1220: If you propose to make GCC pass some other option,
1221: just imagine what will happen if ld is really ld!!! */
1222:
1.1 root 1223: /* Parse arguments. Remember output file spec, pass the rest to ld. */
1.1.1.2 root 1224: /* After the first file, put in the c++ rt0. */
1225:
1.1 root 1226: first_file = 1;
1227: while ((arg = *++argv) != (char *)0)
1228: {
1229: *ld1++ = *ld2++ = arg;
1230:
1231: if (arg[0] == '-')
1.1.1.7 root 1232: {
1.1 root 1233: switch (arg[1])
1234: {
1235: case 'd':
1236: if (!strcmp (arg, "-debug"))
1237: {
1238: debug = 1;
1239: vflag = 1;
1240: ld1--;
1241: ld2--;
1242: }
1243: break;
1244:
1.1.1.8 root 1245: case 'l':
1246: if (first_file)
1247: {
1248: /* place o_file BEFORE this argument! */
1249: first_file = 0;
1250: ld2--;
1251: *ld2++ = o_file;
1252: *ld2++ = arg;
1253: }
1254: break;
1255:
1.1 root 1256: case 'o':
1.1.1.8 root 1257: if (arg[2] == '\0')
1258: output_file = *ld1++ = *ld2++ = *++argv;
1259: else
1260: output_file = &arg[2];
1.1 root 1261: break;
1262:
1263: case 'r':
1264: if (arg[2] == '\0')
1265: rflag = 1;
1266: break;
1267:
1.1.1.3 root 1268: case 's':
1.1.1.8 root 1269: if (arg[2] == '\0' && do_collecting)
1.1.1.3 root 1270: {
1271: /* We must strip after the nm run, otherwise C++ linking
1272: won't work. Thus we strip in the second ld run, or
1273: else with strip if there is no second ld run. */
1274: strip_flag = 1;
1275: ld1--;
1276: }
1277: break;
1278:
1.1 root 1279: case 'v':
1280: if (arg[2] == '\0')
1281: vflag = 1;
1282: break;
1283: }
1.1.1.7 root 1284: }
1.1.1.8 root 1285: else if ((p = rindex (arg, '.')) != (char *)0
1286: && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0))
1.1 root 1287: {
1.1.1.8 root 1288: if (first_file)
1289: {
1290: first_file = 0;
1291: if (p[1] == 'o')
1292: *ld2++ = o_file;
1293: else
1294: {
1295: /* place o_file BEFORE this argument! */
1296: ld2--;
1297: *ld2++ = o_file;
1298: *ld2++ = arg;
1299: }
1300: }
1301: if (p[1] == 'o')
1302: *object++ = arg;
1.1 root 1303: }
1304: }
1305:
1.1.1.2 root 1306: /* Get any options that the upper GCC wants to pass to the sub-GCC. */
1307: p = (char *) getenv ("COLLECT_GCC_OPTIONS");
1308: if (p)
1309: while (*p)
1310: {
1311: char *q = p;
1312: while (*q && *q != ' ') q++;
1313: if (*p == '-' && (p[1] == 'm' || p[1] == 'f'))
1314: *c_ptr++ = savestring (p, q - p);
1.1.1.8 root 1315: if (strncmp (p, "-shared", sizeof ("shared") - 1) == 0)
1316: shared_obj = 1;
1.1.1.2 root 1317:
1318: if (*q) q++;
1319: p = q;
1320: }
1321:
1.1.1.8 root 1322: #ifdef COLLECT_EXPORT_LIST
1323: /* The AIX linker will discard static constructors in object files if
1324: nothing else in the file is referenced, so look at them first. */
1325: while (object_lst < object)
1326: scan_prog_file (*object_lst++, PASS_OBJ);
1327:
1328: {
1329: char *buf = alloca (strlen (export_file) + 5);
1330: sprintf (buf, "-bE:%s", export_file);
1331: *ld1++ = buf;
1332: *ld2++ = buf;
1333: exportf = fopen (export_file, "w");
1334: if (exportf == (FILE *)0)
1335: fatal_perror ("%s", export_file);
1336: write_export_file (exportf);
1337: if (fclose (exportf))
1338: fatal_perror ("closing %s", export_file);
1339: }
1340: #endif
1341:
1.1 root 1342: *c_ptr++ = c_file;
1.1.1.8 root 1343: *object = *c_ptr = *ld1 = (char *)0;
1.1 root 1344:
1345: if (vflag)
1346: {
1.1.1.2 root 1347: fprintf (stderr, "collect2 version %s", version_string);
1.1 root 1348: #ifdef TARGET_VERSION
1349: TARGET_VERSION;
1350: #endif
1351: fprintf (stderr, "\n");
1352: }
1353:
1354: if (debug)
1355: {
1.1.1.2 root 1356: char *ptr;
1.1.1.5 root 1357: fprintf (stderr, "ld_file_name = %s\n",
1358: (ld_file_name ? ld_file_name : "not found"));
1359: fprintf (stderr, "c_file_name = %s\n",
1360: (c_file_name ? c_file_name : "not found"));
1361: fprintf (stderr, "nm_file_name = %s\n",
1362: (nm_file_name ? nm_file_name : "not found"));
1.1.1.8 root 1363: #ifdef LDD_SUFFIX
1364: fprintf (stderr, "ldd_file_name = %s\n",
1365: (ldd_file_name ? ldd_file_name : "not found"));
1366: #endif
1.1.1.5 root 1367: fprintf (stderr, "strip_file_name = %s\n",
1368: (strip_file_name ? strip_file_name : "not found"));
1369: fprintf (stderr, "c_file = %s\n",
1370: (c_file ? c_file : "not found"));
1371: fprintf (stderr, "o_file = %s\n",
1372: (o_file ? o_file : "not found"));
1.1.1.2 root 1373:
1.1.1.6 root 1374: ptr = getenv ("COLLECT_NAMES");
1375: if (ptr)
1376: fprintf (stderr, "COLLECT_NAMES = %s\n", ptr);
1377:
1.1.1.2 root 1378: ptr = getenv ("COLLECT_GCC_OPTIONS");
1379: if (ptr)
1380: fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1381:
1382: ptr = getenv ("COLLECT_GCC");
1383: if (ptr)
1384: fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1385:
1386: ptr = getenv ("COMPILER_PATH");
1387: if (ptr)
1388: fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1389:
1390: ptr = getenv ("LIBRARY_PATH");
1391: if (ptr)
1392: fprintf (stderr, "LIBRARY_PATH = %s\n", ptr);
1393:
1394: fprintf (stderr, "\n");
1.1 root 1395: }
1396:
1.1.1.8 root 1397: /* Load the program, searching all libraries. */
1.1 root 1398:
1.1.1.8 root 1399: collect_execute ("ld", ld1_argv, ldout);
1400: do_wait ("ld");
1401: dump_file (ldout);
1402: unlink (ldout);
1403:
1404: /* If -r or they'll be run via some other method, don't build the
1405: constructor or destructor list, just return now. */
1406: if (rflag || ! do_collecting)
1.1 root 1407: return 0;
1408:
1.1.1.8 root 1409: /* Examine the namelist with nm and search it for static constructors
1410: and destructors to call.
1411: Write the constructor and destructor tables to a .s file and reload. */
1412:
1.1.1.5 root 1413: scan_prog_file (output_file, PASS_FIRST);
1.1 root 1414:
1.1.1.8 root 1415: #ifdef SCAN_LIBRARIES
1416: scan_libraries (output_file);
1417: #endif
1418:
1.1 root 1419: if (debug)
1420: {
1421: fprintf (stderr, "%d constructor(s) found\n", constructors.number);
1422: fprintf (stderr, "%d destructor(s) found\n", destructors.number);
1423: }
1424:
1.1.1.8 root 1425: if (constructors.number == 0 && destructors.number == 0
1426: #ifdef LDD_SUFFIX
1427: /* If we will be running these functions ourselves, we want to emit
1428: stubs into the shared library so that we don't have to relink
1429: dependent programs when we add static objects. */
1430: && ! shared_obj
1431: #endif
1432: )
1.1.1.3 root 1433: {
1434: /* Strip now if it was requested on the command line. */
1435: if (strip_flag)
1436: {
1437: char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
1.1.1.5 root 1438: strip_argv[0] = strip_file_name;
1439: strip_argv[1] = output_file;
1.1.1.3 root 1440: strip_argv[2] = (char *) 0;
1.1.1.5 root 1441: fork_execute ("strip", strip_argv);
1.1.1.3 root 1442: }
1.1.1.8 root 1443:
1444: #ifdef COLLECT_EXPORT_LIST
1445: maybe_unlink (export_file);
1446: #endif
1.1.1.3 root 1447: return 0;
1448: }
1.1 root 1449:
1.1.1.7 root 1450: maybe_unlink(output_file);
1.1 root 1451: outf = fopen (c_file, "w");
1452: if (outf == (FILE *)0)
1.1.1.3 root 1453: fatal_perror ("%s", c_file);
1.1 root 1454:
1455: write_c_file (outf, c_file);
1456:
1457: if (fclose (outf))
1.1.1.3 root 1458: fatal_perror ("closing %s", c_file);
1.1 root 1459:
1.1.1.8 root 1460: /* Tell the linker that we have initializer and finalizer functions. */
1461: #ifdef LD_INIT_SWITCH
1462: *ld2++ = LD_INIT_SWITCH;
1463: *ld2++ = initname;
1464: *ld2++ = LD_FINI_SWITCH;
1465: *ld2++ = fininame;
1466: #endif
1467: *ld2 = (char*)0;
1468:
1469: #ifdef COLLECT_EXPORT_LIST
1470: if (shared_obj)
1471: {
1472: add_to_list (&exports, initname);
1473: add_to_list (&exports, fininame);
1474: add_to_list (&exports, "_GLOBAL__DI");
1475: add_to_list (&exports, "_GLOBAL__DD");
1476: exportf = fopen (export_file, "w");
1477: if (exportf == (FILE *)0)
1478: fatal_perror ("%s", export_file);
1479: write_export_file (exportf);
1480: if (fclose (exportf))
1481: fatal_perror ("closing %s", export_file);
1482: }
1483: #endif
1484:
1.1 root 1485: if (debug)
1486: {
1.1.1.5 root 1487: fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1488: output_file, c_file);
1.1 root 1489: write_c_file (stderr, "stderr");
1490: fprintf (stderr, "========== end of c_file\n\n");
1.1.1.8 root 1491: #ifdef COLLECT_EXPORT_LIST
1492: fprintf (stderr, "\n========== export_file = %s\n", export_file);
1493: write_export_file (stderr);
1494: fprintf (stderr, "========== end of export_file\n\n");
1495: #endif
1.1 root 1496: }
1497:
1498: /* Assemble the constructor and destructor tables.
1499: Link the tables in with the rest of the program. */
1500:
1.1.1.5 root 1501: fork_execute ("gcc", c_argv);
1502: fork_execute ("ld", ld2_argv);
1.1 root 1503:
1504: /* Let scan_prog_file do any final mods (OSF/rose needs this for
1505: constructors/destructors in shared libraries. */
1.1.1.5 root 1506: scan_prog_file (output_file, PASS_SECOND);
1.1 root 1507:
1508: maybe_unlink (c_file);
1509: maybe_unlink (o_file);
1.1.1.8 root 1510: maybe_unlink (export_file);
1.1 root 1511: return 0;
1512: }
1513:
1514:
1515: /* Wait for a process to finish, and exit if a non-zero status is found. */
1516:
1.1.1.8 root 1517: int
1518: collect_wait (prog)
1.1 root 1519: char *prog;
1520: {
1521: int status;
1522:
1523: wait (&status);
1524: if (status)
1525: {
1.1.1.7 root 1526: if (WIFSIGNALED (status))
1.1 root 1527: {
1.1.1.7 root 1528: int sig = WTERMSIG (status);
1.1.1.2 root 1529: #ifdef NO_SYS_SIGLIST
1530: error ("%s terminated with signal %d %s",
1531: prog,
1532: sig,
1533: (status & 0200) ? ", core dumped" : "");
1534: #else
1.1 root 1535: error ("%s terminated with signal %d [%s]%s",
1536: prog,
1537: sig,
1538: sys_siglist[sig],
1539: (status & 0200) ? ", core dumped" : "");
1.1.1.2 root 1540: #endif
1.1 root 1541:
1.1.1.8 root 1542: collect_exit (127);
1.1 root 1543: }
1544:
1.1.1.7 root 1545: if (WIFEXITED (status))
1.1.1.8 root 1546: return WEXITSTATUS (status);
1547: }
1548: return 0;
1549: }
1550:
1551: static void
1552: do_wait (prog)
1553: char *prog;
1554: {
1555: int ret = collect_wait (prog);
1556: if (ret != 0)
1557: {
1558: error ("%s returned %d exit status", prog, ret);
1559: collect_exit (ret);
1.1 root 1560: }
1561: }
1562:
1563:
1564: /* Fork and execute a program, and wait for the reply. */
1565:
1.1.1.8 root 1566: void
1567: collect_execute (prog, argv, redir)
1.1 root 1568: char *prog;
1569: char **argv;
1.1.1.8 root 1570: char *redir;
1.1 root 1571: {
1572: int pid;
1573:
1574: if (vflag || debug)
1575: {
1576: char **p_argv;
1577: char *str;
1578:
1.1.1.5 root 1579: if (argv[0])
1580: fprintf (stderr, "%s", argv[0]);
1581: else
1582: fprintf (stderr, "[cannot find %s]", prog);
1583:
1.1 root 1584: for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++)
1585: fprintf (stderr, " %s", str);
1586:
1587: fprintf (stderr, "\n");
1588: }
1589:
1590: fflush (stdout);
1591: fflush (stderr);
1592:
1.1.1.5 root 1593: /* If we can't find a program we need, complain error. Do this here
1594: since we might not end up needing something that we couldn't find. */
1595:
1596: if (argv[0] == 0)
1597: fatal ("cannot find `%s'", prog);
1598:
1.1 root 1599: pid = vfork ();
1600: if (pid == -1)
1.1.1.6 root 1601: {
1602: #ifdef vfork
1603: fatal_perror ("fork");
1604: #else
1605: fatal_perror ("vfork");
1606: #endif
1607: }
1.1 root 1608:
1609: if (pid == 0) /* child context */
1610: {
1.1.1.8 root 1611: if (redir)
1612: {
1613: unlink (redir);
1614: if (freopen (redir, "a", stdout) == NULL)
1615: fatal_perror ("redirecting stdout");
1616: if (freopen (redir, "a", stderr) == NULL)
1617: fatal_perror ("redirecting stderr");
1618: }
1619:
1.1.1.5 root 1620: execvp (argv[0], argv);
1.1.1.3 root 1621: fatal_perror ("executing %s", prog);
1.1 root 1622: }
1.1.1.8 root 1623: }
1.1 root 1624:
1.1.1.8 root 1625: static void
1626: fork_execute (prog, argv)
1627: char *prog;
1628: char **argv;
1629: {
1630: collect_execute (prog, argv, NULL);
1.1 root 1631: do_wait (prog);
1632: }
1633:
1634: /* Unlink a file unless we are debugging. */
1635:
1636: static void
1637: maybe_unlink (file)
1638: char *file;
1639: {
1640: if (!debug)
1641: unlink (file);
1642: else
1643: fprintf (stderr, "[Leaving %s]\n", file);
1644: }
1645:
1646:
1647: /* Add a name to a linked list. */
1648:
1649: static void
1650: add_to_list (head_ptr, name)
1651: struct head *head_ptr;
1652: char *name;
1653: {
1.1.1.7 root 1654: struct id *newid
1655: = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1656: struct id *p;
1.1 root 1657: static long sequence_number = 0;
1658: strcpy (newid->name, name);
1659:
1660: if (head_ptr->first)
1661: head_ptr->last->next = newid;
1662: else
1663: head_ptr->first = newid;
1664:
1.1.1.7 root 1665: /* Check for duplicate symbols. */
1666: for (p = head_ptr->first;
1667: strcmp (name, p->name) != 0;
1668: p = p->next)
1669: ;
1670: if (p != newid)
1671: {
1672: head_ptr->last->next = 0;
1673: free (newid);
1674: return;
1675: }
1676:
1677: newid->sequence = ++sequence_number;
1.1 root 1678: head_ptr->last = newid;
1679: head_ptr->number++;
1680: }
1681:
1682: /* Write: `prefix', the names on list LIST, `suffix'. */
1683:
1684: static void
1685: write_list (stream, prefix, list)
1686: FILE *stream;
1687: char *prefix;
1688: struct id *list;
1689: {
1690: while (list)
1691: {
1692: fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1693: list = list->next;
1694: }
1695: }
1696:
1697: static void
1698: write_list_with_asm (stream, prefix, list)
1699: FILE *stream;
1700: char *prefix;
1701: struct id *list;
1702: {
1703: while (list)
1704: {
1.1.1.5 root 1705: fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1.1 root 1706: prefix, list->sequence, list->name);
1707: list = list->next;
1708: }
1709: }
1710:
1.1.1.8 root 1711: /* Write out the constructor and destructor tables statically (for a shared
1712: object), along with the functions to execute them. */
1713:
1714: static void
1715: write_c_file_stat (stream, name)
1716: FILE *stream;
1717: char *name;
1718: {
1719: char *prefix, *p, *q;
1720:
1721: /* Figure out name of output_file, stripping off .so version. */
1722: p = rindex (output_file, '/');
1723: if (p == 0)
1724: p = (char *) output_file;
1725: else
1726: p++;
1727: q = p;
1728: while (q)
1729: {
1730: q = index (q,'.');
1731: if (q == 0)
1732: {
1733: q = p + strlen (p);
1734: break;
1735: }
1736: else
1737: {
1738: if (strncmp (q, ".so", 3) == 0)
1739: {
1740: q += 3;
1741: break;
1742: }
1743: else
1744: q++;
1745: }
1746: }
1747: /* q points to null at end of the string (or . of the .so version) */
1748: prefix = xmalloc (q - p + 1);
1749: strncpy (prefix, p, q - p);
1750: prefix[q - p] = 0;
1751: for (q = prefix; *q; q++)
1752: if (!isalnum (*q))
1753: *q = '_';
1754: if (debug)
1755: fprintf (stderr, "\nwrite_c_file - output name is %s, prefix is %s\n",
1756: output_file, prefix);
1757:
1758: #define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
1759: initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
1760: sprintf (initname, INIT_NAME_FORMAT, prefix);
1761:
1762: #define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
1763: fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
1764: sprintf (fininame, FINI_NAME_FORMAT, prefix);
1765:
1766: free (prefix);
1767:
1768: /* Write the tables as C code */
1769:
1770: fprintf (stream, "static int count;\n");
1771: fprintf (stream, "typedef void entry_pt();\n");
1772: write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1773: fprintf (stream, "void %s() {\n", initname);
1774: if (constructors.number > 0)
1775: {
1776: fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1777: write_list (stream, "\t\t", constructors.first);
1778: fprintf (stream, "\t};\n");
1779: fprintf (stream, "\tentry_pt **p;\n");
1780: fprintf (stream, "\tif (count++ != 0) return;\n");
1781: fprintf (stream, "\tp = ctors + %d;\n", constructors.number);
1782: fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1783: }
1784: else
1785: fprintf (stream, "\t++count;\n");
1786: fprintf (stream, "}\n");
1787: write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1788: fprintf (stream, "void %s() {\n", fininame);
1789: if (destructors.number > 0)
1790: {
1791: fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1792: write_list (stream, "\t\t", destructors.first);
1793: fprintf (stream, "\t};\n");
1794: fprintf (stream, "\tentry_pt **p;\n");
1795: fprintf (stream, "\tif (--count != 0) return;\n");
1796: fprintf (stream, "\tp = dtors;\n");
1797: fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
1798: destructors.number);
1799: }
1800: fprintf (stream, "}\n");
1801:
1802: if (shared_obj)
1803: {
1804: fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
1805: fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
1806: }
1807: }
1808:
1.1 root 1809: /* Write the constructor/destructor tables. */
1810:
1811: static void
1.1.1.8 root 1812: write_c_file_glob (stream, name)
1.1 root 1813: FILE *stream;
1814: char *name;
1815: {
1816: /* Write the tables as C code */
1817:
1818: fprintf (stream, "typedef void entry_pt();\n\n");
1819:
1.1.1.3 root 1820: write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1.1 root 1821:
1822: fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
1823: fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number);
1824: write_list (stream, "\t", constructors.first);
1825: fprintf (stream, "\t0\n};\n\n");
1826:
1.1.1.3 root 1827: write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1.1 root 1828:
1829: fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
1830: fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number);
1831: write_list (stream, "\t", destructors.first);
1832: fprintf (stream, "\t0\n};\n\n");
1833:
1.1.1.6 root 1834: fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
1835: fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
1.1 root 1836: }
1837:
1.1.1.8 root 1838: static void
1839: write_c_file (stream, name)
1840: FILE *stream;
1841: char *name;
1842: {
1843: #ifndef LD_INIT_SWITCH
1844: if (! shared_obj)
1845: write_c_file_glob (stream, name);
1846: else
1847: #endif
1848: write_c_file_stat (stream, name);
1849: }
1850:
1851: static void
1852: write_export_file (stream)
1853: FILE *stream;
1854: {
1855: struct id *list = exports.first;
1856: for (; list; list = list->next)
1857: fprintf (stream, "%s\n", list->name);
1858: }
1.1 root 1859:
1.1.1.2 root 1860: #ifdef OBJECT_FORMAT_NONE
1.1 root 1861:
1.1.1.2 root 1862: /* Generic version to scan the name list of the loaded program for
1863: the symbols g++ uses for static constructors and destructors.
1.1 root 1864:
1865: The constructor table begins at __CTOR_LIST__ and contains a count
1866: of the number of pointers (or -1 if the constructors are built in a
1867: separate section by the linker), followed by the pointers to the
1868: constructor functions, terminated with a null pointer. The
1869: destructor table has the same format, and begins at __DTOR_LIST__. */
1870:
1871: static void
1872: scan_prog_file (prog_name, which_pass)
1873: char *prog_name;
1874: enum pass which_pass;
1875: {
1876: void (*int_handler) ();
1877: void (*quit_handler) ();
1878: char *nm_argv[4];
1879: int pid;
1880: int argc = 0;
1881: int pipe_fd[2];
1882: char *p, buf[1024];
1883: FILE *inf;
1884:
1.1.1.8 root 1885: if (which_pass == PASS_SECOND)
1.1 root 1886: return;
1887:
1.1.1.5 root 1888: /* If we don't have an `nm', complain. */
1889: if (nm_file_name == 0)
1890: fatal ("cannot find `nm'");
1891:
1.1.1.8 root 1892: nm_argv[argc++] = nm_file_name;
1.1 root 1893: if (NM_FLAGS[0] != '\0')
1894: nm_argv[argc++] = NM_FLAGS;
1895:
1896: nm_argv[argc++] = prog_name;
1897: nm_argv[argc++] = (char *)0;
1898:
1899: if (pipe (pipe_fd) < 0)
1900: fatal_perror ("pipe");
1901:
1902: inf = fdopen (pipe_fd[0], "r");
1903: if (inf == (FILE *)0)
1904: fatal_perror ("fdopen");
1905:
1906: /* Trace if needed. */
1907: if (vflag)
1908: {
1909: char **p_argv;
1910: char *str;
1911:
1.1.1.8 root 1912: for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *)0; p_argv++)
1.1 root 1913: fprintf (stderr, " %s", str);
1914:
1915: fprintf (stderr, "\n");
1916: }
1917:
1918: fflush (stdout);
1919: fflush (stderr);
1920:
1921: /* Spawn child nm on pipe */
1922: pid = vfork ();
1923: if (pid == -1)
1.1.1.6 root 1924: {
1925: #ifdef vfork
1926: fatal_perror ("fork");
1927: #else
1928: fatal_perror ("vfork");
1929: #endif
1930: }
1.1 root 1931:
1932: if (pid == 0) /* child context */
1933: {
1934: /* setup stdout */
1935: if (dup2 (pipe_fd[1], 1) < 0)
1.1.1.3 root 1936: fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
1.1 root 1937:
1938: if (close (pipe_fd[0]) < 0)
1.1.1.3 root 1939: fatal_perror ("close (%d)", pipe_fd[0]);
1.1 root 1940:
1941: if (close (pipe_fd[1]) < 0)
1.1.1.3 root 1942: fatal_perror ("close (%d)", pipe_fd[1]);
1.1 root 1943:
1944: execv (nm_file_name, nm_argv);
1.1.1.3 root 1945: fatal_perror ("executing %s", nm_file_name);
1.1 root 1946: }
1947:
1948: /* Parent context from here on. */
1949: int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
1.1.1.5 root 1950: #ifdef SIGQUIT
1.1 root 1951: quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
1.1.1.5 root 1952: #endif
1.1 root 1953:
1954: if (close (pipe_fd[1]) < 0)
1.1.1.3 root 1955: fatal_perror ("close (%d)", pipe_fd[1]);
1.1 root 1956:
1957: if (debug)
1958: fprintf (stderr, "\nnm output with constructors/destructors.\n");
1959:
1960: /* Read each line of nm output. */
1961: while (fgets (buf, sizeof buf, inf) != (char *)0)
1962: {
1963: int ch, ch2;
1.1.1.2 root 1964: char *name, *end;
1.1 root 1965:
1966: /* If it contains a constructor or destructor name, add the name
1967: to the appropriate list. */
1968:
1969: for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
1.1.1.8 root 1970: if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
1971: break;
1.1 root 1972:
1.1.1.8 root 1973: if (ch != '_')
1.1 root 1974: continue;
1.1.1.2 root 1975:
1976: name = p;
1977: /* Find the end of the symbol name.
1978: Don't include `|', because Encore nm can tack that on the end. */
1979: for (end = p; (ch2 = *end) != '\0' && !isspace (ch2) && ch2 != '|';
1980: end++)
1981: continue;
1.1 root 1982:
1.1.1.7 root 1983:
1.1 root 1984: *end = '\0';
1.1.1.2 root 1985: switch (is_ctor_dtor (name))
1.1 root 1986: {
1.1.1.2 root 1987: case 1:
1.1.1.8 root 1988: if (which_pass != PASS_LIB)
1989: add_to_list (&constructors, name);
1.1.1.2 root 1990: break;
1991:
1992: case 2:
1.1.1.8 root 1993: if (which_pass != PASS_LIB)
1994: add_to_list (&destructors, name);
1995: break;
1996:
1997: case 3:
1998: if (which_pass != PASS_LIB)
1999: fatal ("init function found in object %s", prog_name);
2000: #ifndef LD_INIT_SWITCH
2001: add_to_list (&constructors, name);
2002: #endif
2003: break;
2004:
2005: case 4:
2006: if (which_pass != PASS_LIB)
2007: fatal ("fini function found in object %s", prog_name);
2008: #ifndef LD_FINI_SWITCH
1.1.1.2 root 2009: add_to_list (&destructors, name);
1.1.1.8 root 2010: #endif
1.1.1.2 root 2011: break;
1.1 root 2012:
1.1.1.2 root 2013: default: /* not a constructor or destructor */
2014: continue;
1.1 root 2015: }
2016:
2017: if (debug)
2018: fprintf (stderr, "\t%s\n", buf);
2019: }
2020:
2021: if (debug)
2022: fprintf (stderr, "\n");
2023:
2024: if (fclose (inf) != 0)
2025: fatal_perror ("fclose of pipe");
2026:
2027: do_wait (nm_file_name);
2028:
2029: signal (SIGINT, int_handler);
1.1.1.5 root 2030: #ifdef SIGQUIT
1.1 root 2031: signal (SIGQUIT, quit_handler);
1.1.1.5 root 2032: #endif
1.1 root 2033: }
2034:
1.1.1.8 root 2035: #if SUNOS4_SHARED_LIBRARIES
2036:
2037: /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2038: that the output file depends upon and their initialization/finalization
2039: routines, if any. */
2040:
2041: #include <a.out.h>
2042: #include <fcntl.h>
2043: #include <link.h>
2044: #include <sys/mman.h>
2045: #include <sys/param.h>
2046: #include <sys/unistd.h>
2047: #include <sys/dir.h>
2048:
2049: /* pointers to the object file */
2050: unsigned object; /* address of memory mapped file */
2051: unsigned objsize; /* size of memory mapped to file */
2052: char * code; /* pointer to code segment */
2053: char * data; /* pointer to data segment */
2054: struct nlist *symtab; /* pointer to symbol table */
2055: struct link_dynamic *ld;
2056: struct link_dynamic_2 *ld_2;
2057: struct head libraries;
2058:
2059: /* Map the file indicated by NAME into memory and store its address. */
2060:
2061: static void
2062: mapfile (name)
2063: char *name;
2064: {
2065: int fp;
2066: struct stat s;
2067: if ((fp = open (name, O_RDONLY)) == -1)
2068: fatal ("unable to open file '%s'", name);
2069: if (fstat (fp, &s) == -1)
2070: fatal ("unable to stat file '%s'", name);
2071:
2072: objsize = s.st_size;
2073: object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2074: fp, 0);
2075: if (object == -1)
2076: fatal ("unable to mmap file '%s'", name);
2077:
2078: close (fp);
2079: }
2080:
2081: /* Helpers for locatelib. */
2082:
2083: static char *libname;
2084:
2085: static int
2086: libselect (d)
2087: struct direct *d;
2088: {
2089: return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2090: }
2091:
2092: /* If one file has an additional numeric extension past LIBNAME, then put
2093: that one first in the sort. If both files have additional numeric
2094: extensions, then put the one with the higher number first in the sort.
2095:
2096: We must verify that the extension is numeric, because Sun saves the
2097: original versions of patched libraries with a .FCS extension. Files with
2098: invalid extensions must go last in the sort, so that they won't be used. */
2099:
2100: static int
2101: libcompare (d1, d2)
2102: struct direct **d1, **d2;
2103: {
2104: int i1, i2 = strlen (libname);
2105: char *e1 = (*d1)->d_name + i2;
2106: char *e2 = (*d2)->d_name + i2;
2107:
2108: while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2109: && e1[1] && isdigit (e1[1]) && e2[1] && isdigit (e2[1]))
2110: {
2111: ++e1;
2112: ++e2;
2113: i1 = strtol (e1, &e1, 10);
2114: i2 = strtol (e2, &e2, 10);
2115: if (i1 != i2)
2116: return i1 - i2;
2117: }
2118:
2119: if (*e1)
2120: {
2121: /* It has a valid numeric extension, prefer this one. */
2122: if (*e1 == '.' && e1[1] && isdigit (e1[1]))
2123: return 1;
2124: /* It has a invalid numeric extension, must prefer the other one. */
2125: else
2126: return -1;
2127: }
2128: else if (*e2)
2129: {
2130: /* It has a valid numeric extension, prefer this one. */
2131: if (*e2 == '.' && e2[1] && isdigit (e2[1]))
2132: return -1;
2133: /* It has a invalid numeric extension, must prefer the other one. */
2134: else
2135: return 1;
2136: }
2137: else
2138: return 0;
2139: }
2140:
2141: /* Given the name NAME of a dynamic dependency, find its pathname and add
2142: it to the list of libraries. */
2143:
2144: static void
2145: locatelib (name)
2146: char *name;
2147: {
2148: static char **l;
2149: static int cnt;
2150: char buf[MAXPATHLEN];
2151: char *p, *q;
2152: char **pp;
2153:
2154: if (l == 0)
2155: {
2156: char *ld_rules;
2157: char *ldr = 0;
2158: /* counting elements in array, need 1 extra for null */
2159: cnt = 1;
2160: ld_rules = (char *) (ld_2->ld_rules + code);
2161: if (ld_rules)
2162: {
2163: cnt++;
2164: for (; *ld_rules != 0; ld_rules++)
2165: if (*ld_rules == ':')
2166: cnt++;
2167: ld_rules = (char *) (ld_2->ld_rules + code);
2168: ldr = (char *) malloc (strlen (ld_rules) + 1);
2169: strcpy (ldr, ld_rules);
2170: }
2171: p = getenv ("LD_LIBRARY_PATH");
2172: q = 0;
2173: if (p)
2174: {
2175: cnt++;
2176: for (q = p ; *q != 0; q++)
2177: if (*q == ':')
2178: cnt++;
2179: q = (char *) malloc (strlen (p) + 1);
2180: strcpy (q, p);
2181: }
2182: l = (char **) malloc ((cnt + 3) * sizeof (char *));
2183: pp = l;
2184: if (ldr)
2185: {
2186: *pp++ = ldr;
2187: for (; *ldr != 0; ldr++)
2188: if (*ldr == ':')
2189: {
2190: *ldr++ = 0;
2191: *pp++ = ldr;
2192: }
2193: }
2194: if (q)
2195: {
2196: *pp++ = q;
2197: for (; *q != 0; q++)
2198: if (*q == ':')
2199: {
2200: *q++ = 0;
2201: *pp++ = q;
2202: }
2203: }
2204: /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2205: *pp++ = "/lib";
2206: *pp++ = "/usr/lib";
2207: *pp++ = "/usr/local/lib";
2208: *pp = 0;
2209: }
2210: libname = name;
2211: for (pp = l; *pp != 0 ; pp++)
2212: {
2213: struct direct **namelist;
2214: int entries;
2215: if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2216: {
2217: sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2218: add_to_list (&libraries, buf);
2219: if (debug)
2220: fprintf (stderr, "%s\n", buf);
2221: break;
2222: }
2223: }
2224: if (*pp == 0)
2225: {
2226: if (debug)
2227: fprintf (stderr, "not found\n");
2228: else
2229: fatal ("dynamic dependency %s not found", name);
2230: }
2231: }
2232:
2233: /* Scan the _DYNAMIC structure of the output file to find shared libraries
2234: that it depends upon and any constructors or destructors they contain. */
2235:
2236: static void
2237: scan_libraries (prog_name)
2238: char *prog_name;
2239: {
2240: struct exec *header;
2241: char *base;
2242: struct link_object *lo;
2243: char buff[MAXPATHLEN];
2244: struct id *list;
2245:
2246: mapfile (prog_name);
2247: header = (struct exec *)object;
2248: if (N_BADMAG (*header))
2249: fatal ("bad magic number in file '%s'", prog_name);
2250: if (header->a_dynamic == 0)
2251: return;
2252:
2253: code = (char *) (N_TXTOFF (*header) + (long) header);
2254: data = (char *) (N_DATOFF (*header) + (long) header);
2255: symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2256:
2257: if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2258: {
2259: /* shared object */
2260: ld = (struct link_dynamic *) (symtab->n_value + code);
2261: base = code;
2262: }
2263: else
2264: {
2265: /* executable */
2266: ld = (struct link_dynamic *) data;
2267: base = code-PAGSIZ;
2268: }
2269:
2270: if (debug)
2271: fprintf (stderr, "dynamic dependencies.\n");
2272:
2273: ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2274: for (lo = (struct link_object *) ld_2->ld_need; lo;
2275: lo = (struct link_object *) lo->lo_next)
2276: {
2277: char *name;
2278: lo = (struct link_object *) ((long) lo + code);
2279: name = (char *) (code + lo->lo_name);
2280: if (lo->lo_library)
2281: {
2282: if (debug)
2283: fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2284: sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2285: locatelib (buff);
2286: }
2287: else
2288: {
2289: if (debug)
2290: fprintf (stderr, "\t%s\n", name);
2291: add_to_list (&libraries, name);
2292: }
2293: }
2294:
2295: if (debug)
2296: fprintf (stderr, "\n");
2297:
2298: /* now iterate through the library list adding their symbols to
2299: the list. */
2300: for (list = libraries.first; list; list = list->next)
2301: scan_prog_file (list->name, PASS_LIB);
2302: }
2303:
2304: #else /* SUNOS4_SHARED_LIBRARIES */
2305: #ifdef LDD_SUFFIX
2306:
2307: /* Use the List Dynamic Dependencies program to find shared libraries that
2308: the output file depends upon and their initialization/finalization
2309: routines, if any. */
2310:
2311: static void
2312: scan_libraries (prog_name)
2313: char *prog_name;
2314: {
2315: static struct head libraries; /* list of shared libraries found */
2316: struct id *list;
2317: void (*int_handler) ();
2318: void (*quit_handler) ();
2319: char *ldd_argv[4];
2320: int pid;
2321: int argc = 0;
2322: int pipe_fd[2];
2323: char buf[1024];
2324: FILE *inf;
2325:
2326: /* If we don't have an `ldd', complain. */
2327: if (ldd_file_name == 0)
2328: {
2329: error ("cannot find `ldd'");
2330: return;
2331: }
2332:
2333: ldd_argv[argc++] = ldd_file_name;
2334: ldd_argv[argc++] = prog_name;
2335: ldd_argv[argc++] = (char *) 0;
2336:
2337: if (pipe (pipe_fd) < 0)
2338: fatal_perror ("pipe");
2339:
2340: inf = fdopen (pipe_fd[0], "r");
2341: if (inf == (FILE *) 0)
2342: fatal_perror ("fdopen");
2343:
2344: /* Trace if needed. */
2345: if (vflag)
2346: {
2347: char **p_argv;
2348: char *str;
2349:
2350: for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2351: fprintf (stderr, " %s", str);
2352:
2353: fprintf (stderr, "\n");
2354: }
2355:
2356: fflush (stdout);
2357: fflush (stderr);
2358:
2359: /* Spawn child ldd on pipe */
2360: pid = vfork ();
2361: if (pid == -1)
2362: {
2363: #ifdef vfork
2364: fatal_perror ("fork");
2365: #else
2366: fatal_perror ("vfork");
2367: #endif
2368: }
2369:
2370: if (pid == 0) /* child context */
2371: {
2372: /* setup stdout */
2373: if (dup2 (pipe_fd[1], 1) < 0)
2374: fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
2375:
2376: if (close (pipe_fd[0]) < 0)
2377: fatal_perror ("close (%d)", pipe_fd[0]);
2378:
2379: if (close (pipe_fd[1]) < 0)
2380: fatal_perror ("close (%d)", pipe_fd[1]);
2381:
2382: execv (ldd_file_name, ldd_argv);
2383: fatal_perror ("executing %s", ldd_file_name);
2384: }
2385:
2386: /* Parent context from here on. */
2387: int_handler = (void (*) ()) signal (SIGINT, SIG_IGN);
2388: #ifdef SIGQUIT
2389: quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN);
2390: #endif
2391:
2392: if (close (pipe_fd[1]) < 0)
2393: fatal_perror ("close (%d)", pipe_fd[1]);
2394:
2395: if (debug)
2396: fprintf (stderr, "\nldd output with constructors/destructors.\n");
2397:
2398: /* Read each line of ldd output. */
2399: while (fgets (buf, sizeof buf, inf) != (char *) 0)
2400: {
2401: int ch, ch2;
2402: char *name, *end, *p = buf;
2403:
2404: /* Extract names of libraries and add to list. */
2405: PARSE_LDD_OUTPUT (p);
2406: if (p == 0)
2407: continue;
2408:
2409: name = p;
2410: if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2411: fatal ("dynamic dependency %s not found", buf);
2412:
2413: /* Find the end of the symbol name. */
2414: for (end = p;
2415: (ch2 = *end) != '\0' && ch2 != '\n' && !isspace (ch2) && ch2 != '|';
2416: end++)
2417: continue;
2418: *end = '\0';
2419:
2420: if (access (name, R_OK) == 0)
2421: add_to_list (&libraries, name);
2422: else
2423: fatal ("unable to open dynamic dependency '%s'", buf);
2424:
2425: if (debug)
2426: fprintf (stderr, "\t%s\n", buf);
2427: }
2428: if (debug)
2429: fprintf (stderr, "\n");
2430:
2431: if (fclose (inf) != 0)
2432: fatal_perror ("fclose of pipe");
2433:
2434: do_wait (ldd_file_name);
2435:
2436: signal (SIGINT, int_handler);
2437: #ifdef SIGQUIT
2438: signal (SIGQUIT, quit_handler);
2439: #endif
2440:
2441: /* now iterate through the library list adding their symbols to
2442: the list. */
2443: for (list = libraries.first; list; list = list->next)
2444: scan_prog_file (list->name, PASS_LIB);
2445: }
2446:
2447: #endif /* LDD_SUFFIX */
2448: #endif /* SUNOS4_SHARED_LIBRARIES */
2449:
1.1.1.2 root 2450: #endif /* OBJECT_FORMAT_NONE */
2451:
2452:
2453: /*
2454: * COFF specific stuff.
2455: */
2456:
2457: #ifdef OBJECT_FORMAT_COFF
2458:
2459: #if defined(EXTENDED_COFF)
1.1.1.3 root 2460: # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2461: # define GCC_SYMENT SYMR
2462: # define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText)
2463: # define GCC_SYMINC(X) (1)
2464: # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2465: # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
1.1.1.2 root 2466: #else
1.1.1.3 root 2467: # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2468: # define GCC_SYMENT SYMENT
1.1.1.2 root 2469: # define GCC_OK_SYMBOL(X) \
2470: (((X).n_sclass == C_EXT) && \
2471: (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \
2472: ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))
1.1.1.3 root 2473: # define GCC_SYMINC(X) ((X).n_numaux+1)
2474: # define GCC_SYMZERO(X) 0
2475: # define GCC_CHECK_HDR(X) (1)
1.1.1.2 root 2476: #endif
2477:
2478: extern char *ldgetname ();
2479:
2480: /* COFF version to scan the name list of the loaded program for
2481: the symbols g++ uses for static constructors and destructors.
2482:
2483: The constructor table begins at __CTOR_LIST__ and contains a count
2484: of the number of pointers (or -1 if the constructors are built in a
2485: separate section by the linker), followed by the pointers to the
2486: constructor functions, terminated with a null pointer. The
2487: destructor table has the same format, and begins at __DTOR_LIST__. */
2488:
2489: static void
2490: scan_prog_file (prog_name, which_pass)
2491: char *prog_name;
2492: enum pass which_pass;
2493: {
1.1.1.3 root 2494: LDFILE *ldptr = NULL;
1.1.1.2 root 2495: int sym_index, sym_count;
2496:
1.1.1.8 root 2497: if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
1.1.1.2 root 2498: return;
2499:
2500: if ((ldptr = ldopen (prog_name, ldptr)) == NULL)
2501: fatal ("%s: can't open as COFF file", prog_name);
2502:
1.1.1.4 root 2503: if (!MY_ISCOFF (HEADER (ldptr).f_magic))
1.1.1.2 root 2504: fatal ("%s: not a COFF file", prog_name);
2505:
1.1.1.3 root 2506: if (GCC_CHECK_HDR (ldptr))
1.1.1.2 root 2507: {
1.1.1.3 root 2508: sym_count = GCC_SYMBOLS (ldptr);
2509: sym_index = GCC_SYMZERO (ldptr);
2510: while (sym_index < sym_count)
2511: {
2512: GCC_SYMENT symbol;
1.1.1.2 root 2513:
1.1.1.3 root 2514: if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2515: break;
2516: sym_index += GCC_SYMINC (symbol);
1.1.1.2 root 2517:
1.1.1.3 root 2518: if (GCC_OK_SYMBOL (symbol))
2519: {
2520: char *name;
1.1.1.2 root 2521:
1.1.1.3 root 2522: if ((name = ldgetname (ldptr, &symbol)) == NULL)
2523: continue; /* should never happen */
1.1.1.2 root 2524:
1.1.1.8 root 2525: #ifdef XCOFF_DEBUGGING_INFO
2526: /* All AIX function names have a duplicate entry beginning
2527: with a dot. */
2528: if (*name == '.')
2529: ++name;
1.1.1.2 root 2530: #endif
2531:
1.1.1.3 root 2532: switch (is_ctor_dtor (name))
2533: {
2534: case 1:
2535: add_to_list (&constructors, name);
1.1.1.8 root 2536: if (which_pass == PASS_OBJ)
2537: add_to_list (&exports, name);
1.1.1.3 root 2538: break;
1.1.1.2 root 2539:
1.1.1.3 root 2540: case 2:
2541: add_to_list (&destructors, name);
1.1.1.8 root 2542: if (which_pass == PASS_OBJ)
2543: add_to_list (&exports, name);
1.1.1.3 root 2544: break;
1.1.1.2 root 2545:
1.1.1.3 root 2546: default: /* not a constructor or destructor */
2547: continue;
2548: }
1.1.1.2 root 2549:
2550: #if !defined(EXTENDED_COFF)
1.1.1.3 root 2551: if (debug)
2552: fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2553: symbol.n_scnum, symbol.n_sclass,
2554: (symbol.n_type ? "0" : ""), symbol.n_type,
2555: name);
1.1.1.2 root 2556: #else
1.1.1.3 root 2557: if (debug)
2558: fprintf (stderr, "\tiss = %5d, value = %5d, index = %5d, name = %s\n",
2559: symbol.iss, symbol.value, symbol.index, name);
1.1.1.2 root 2560: #endif
1.1.1.3 root 2561: }
1.1.1.2 root 2562: }
2563: }
2564:
2565: (void) ldclose(ldptr);
2566: }
2567:
1.1.1.8 root 2568: #ifdef XCOFF_SCAN_LIBS
2569: /* Scan imported AIX libraries for GCC static ctors and dtors.
2570: FIXME: it is possible to link an executable without the actual import
2571: library by using an "import file" - a text file listing symbols
2572: exported by a library. To support this, we would have to scan
2573: import files as well as actual shared binaries to find GCC ctors.
2574: TODO: use memory mapping instead of 'ld' routines, files are already
2575: memory mapped, but we could eliminate the extra in-memory copies.
2576: Is it worth the effort? */
2577:
2578: static void
2579: scan_libraries (prog_name)
2580: char *prog_name;
2581: {
2582: LDFILE *ldptr;
2583: SCNHDR ldsh;
2584: static struct path_prefix libpath; /* we should only do this once */
2585:
2586: if ((ldptr = ldopen (prog_name, ldptr)) == NULL)
2587: fatal ("%s: can't open as COFF file", prog_name);
2588:
2589: if (!MY_ISCOFF (HEADER (ldptr).f_magic))
2590: fatal ("%s: not a COFF file", prog_name);
2591:
2592: /* find and read loader section */
2593: if (ldnshread (ldptr, _LOADER, &ldsh))
2594: {
2595: LDHDR ldh;
2596: char *impbuf;
1.1.1.9 ! root 2597: int entry;
! 2598:
1.1.1.8 root 2599: FSEEK (ldptr, ldsh.s_scnptr, BEGINNING);
1.1.1.9 ! root 2600: FREAD (&ldh, sizeof (ldh), 1, ldptr);
1.1.1.8 root 2601: /* read import library list */
2602: impbuf = alloca (ldh.l_istlen);
2603: FSEEK (ldptr, ldh.l_impoff + ldsh.s_scnptr, BEGINNING);
2604: FREAD (impbuf, ldh.l_istlen, 1, ldptr);
1.1.1.9 ! root 2605:
1.1.1.8 root 2606: if (debug)
2607: fprintf (stderr, "LIBPATH=%s\n", impbuf);
2608: prefix_from_string (impbuf, &libpath);
1.1.1.9 ! root 2609:
! 2610: /* skip LIBPATH and empty base and member fields */
! 2611: impbuf += strlen (impbuf) + 3;
! 2612: for (entry = 1; entry < ldh.l_nimpid; ++entry)
1.1.1.8 root 2613: {
1.1.1.9 ! root 2614: char *impath = impbuf;
! 2615: char *implib = impath + strlen (impath) + 1;
1.1.1.8 root 2616: char *impmem = implib + strlen (implib) + 1;
1.1.1.9 ! root 2617: char *soname = NULL;
! 2618: char *trial;
! 2619: int pathlen;
1.1.1.8 root 2620: LDFILE *libptr = NULL;
2621: struct prefix_list *pl;
2622: ARCHDR ah;
1.1.1.9 ! root 2623:
! 2624: impbuf = impmem + strlen (impmem) + 1;
! 2625: if (debug)
! 2626: fprintf (stderr, "PATH+BASE=%s%s\n", impath, implib);
! 2627: /* Skip AIX kernel exports */
! 2628: if (*impath == '/' && *(impath+1) == '\0'
! 2629: && strcmp (implib, "unix") == 0)
1.1.1.8 root 2630: continue;
1.1.1.9 ! root 2631: pathlen = strlen (impath);
! 2632: trial = alloca (MAX (pathlen + 1, libpath.max_len)
! 2633: + strlen (implib) + 1);
! 2634: if (*impath)
1.1.1.8 root 2635: {
1.1.1.9 ! root 2636: strcpy (trial, impath);
! 2637: if (impath[pathlen - 1] != '/')
! 2638: trial[pathlen++] = '/';
! 2639: strcpy (trial + pathlen, implib);
! 2640: if (access (trial, R_OK) == 0)
! 2641: soname = trial;
1.1.1.8 root 2642: }
2643: else
1.1.1.9 ! root 2644: for (pl = libpath.plist; pl; pl = pl->next)
! 2645: {
! 2646: strcpy (trial, pl->prefix);
! 2647: strcat (trial, implib);
! 2648: if (access (trial, R_OK) == 0)
! 2649: {
! 2650: soname = trial;
! 2651: break;
! 2652: }
! 2653: }
! 2654:
! 2655: if (! soname)
! 2656: fatal ("%s: library not found", implib);
1.1.1.8 root 2657: if (debug)
1.1.1.9 ! root 2658: if (*impmem)
! 2659: fprintf (stderr, "%s (%s)\n", soname, impmem);
! 2660: else
! 2661: fprintf (stderr, "%s\n", soname);
! 2662:
1.1.1.8 root 2663: do
2664: {
2665: /* scan imported shared objects for GCC GLOBAL ctors */
2666: short type;
2667: if ((libptr = ldopen (soname, libptr)) == NULL)
2668: fatal ("%s: can't open import library", soname);
2669: if (TYPE (libptr) == ARTYPE)
2670: {
2671: LDFILE *memptr;
1.1.1.9 ! root 2672: if (! *impmem)
1.1.1.8 root 2673: fatal ("%s: no archive member specified", soname);
2674: ldahread (libptr, &ah);
2675: if (strcmp (ah.ar_name, impmem))
2676: continue;
2677: }
2678: type = HEADER (libptr).f_magic;
2679: if (HEADER (libptr).f_flags & F_SHROBJ)
2680: {
2681: SCNHDR soldsh;
2682: LDHDR soldh;
2683: long symcnt, i;
2684: char *ldstrings;
2685: LDSYM *lsyms;
2686: if (!ldnshread (libptr, _LOADER, &soldsh))
2687: fatal ("%s: not an import library", soname);
2688: FSEEK (libptr, soldsh.s_scnptr, BEGINNING);
1.1.1.9 ! root 2689: if (FREAD (&soldh, sizeof (soldh), 1, libptr) != 1)
1.1.1.8 root 2690: fatal ("%s: can't read loader section", soname);
2691: /*fprintf (stderr, "\tscanning %s\n", soname);*/
2692: symcnt = soldh.l_nsyms;
1.1.1.9 ! root 2693: lsyms = (LDSYM*) alloca (symcnt * sizeof (*lsyms));
! 2694: symcnt = FREAD (lsyms, sizeof (*lsyms), symcnt, libptr);
1.1.1.8 root 2695: ldstrings = alloca (soldh.l_stlen);
2696: FSEEK (libptr, soldsh.s_scnptr+soldh.l_stoff, BEGINNING);
2697: FREAD (ldstrings, soldh.l_stlen, 1, libptr);
2698: for (i = 0; i < symcnt; ++i)
2699: {
2700: LDSYM *l = lsyms + i;
2701: if (LDR_EXPORT (*l))
2702: {
2703: char *expname = 0;
2704: if (l->l_zeroes)
2705: expname = l->l_name;
2706: else if (l->l_offset < soldh.l_stlen)
2707: expname = ldstrings + l->l_offset;
2708: switch (is_ctor_dtor (expname))
2709: {
2710: case 3:
2711: if (debug)
2712: fprintf (stderr, "\t%s\n", expname);
2713: add_to_list (&constructors, expname);
2714: break;
2715:
2716: case 4:
2717: add_to_list (&destructors, expname);
2718: break;
2719:
2720: default: /* not a constructor or destructor */
2721: continue;
2722: }
2723: }
2724: }
2725: }
2726: else
2727: fprintf (stderr, "%s: type = %04X flags = %04X\n",
2728: ah.ar_name, type, HEADER (libptr).f_flags);
2729: }
2730: while (ldclose (libptr) == FAILURE);
2731: /* printf (stderr, "closed %s\n", soname); */
2732: }
2733: }
2734: }
2735: #endif /* XCOFF_SCAN_LIBS */
2736:
1.1.1.2 root 2737: #endif /* OBJECT_FORMAT_COFF */
1.1 root 2738:
2739:
2740: /*
2741: * OSF/rose specific stuff.
2742: */
2743:
2744: #ifdef OBJECT_FORMAT_ROSE
2745:
2746: /* Union of the various load commands */
2747:
2748: typedef union load_union
2749: {
2750: ldc_header_t hdr; /* common header */
2751: load_cmd_map_command_t map; /* map indexing other load cmds */
1.1.1.2 root 2752: interpreter_command_t iprtr; /* interpreter pathname */
1.1 root 2753: strings_command_t str; /* load commands strings section */
2754: region_command_t region; /* region load command */
2755: reloc_command_t reloc; /* relocation section */
2756: package_command_t pkg; /* package load command */
2757: symbols_command_t sym; /* symbol sections */
2758: entry_command_t ent; /* program start section */
2759: gen_info_command_t info; /* object information */
2760: func_table_command_t func; /* function constructors/destructors */
2761: } load_union_t;
2762:
2763: /* Structure to point to load command and data section in memory. */
2764:
2765: typedef struct load_all
2766: {
2767: load_union_t *load; /* load command */
2768: char *section; /* pointer to section */
2769: } load_all_t;
2770:
2771: /* Structure to contain information about a file mapped into memory. */
2772:
2773: struct file_info
2774: {
2775: char *start; /* start of map */
2776: char *name; /* filename */
2777: long size; /* size of the file */
2778: long rounded_size; /* size rounded to page boundary */
2779: int fd; /* file descriptor */
2780: int rw; /* != 0 if opened read/write */
2781: int use_mmap; /* != 0 if mmap'ed */
2782: };
2783:
2784: extern int decode_mach_o_hdr ();
2785: extern int encode_mach_o_hdr ();
2786:
1.1.1.6 root 2787: static void add_func_table PROTO((mo_header_t *, load_all_t *,
2788: symbol_info_t *, int));
2789: static void print_header PROTO((mo_header_t *));
2790: static void print_load_command PROTO((load_union_t*, size_t, int));
2791: static void bad_header PROTO((int));
2792: static struct file_info *read_file PROTO((char *, int, int));
2793: static void end_file PROTO((struct file_info *));
1.1 root 2794:
2795: /* OSF/rose specific version to scan the name list of the loaded
2796: program for the symbols g++ uses for static constructors and
2797: destructors.
2798:
2799: The constructor table begins at __CTOR_LIST__ and contains a count
2800: of the number of pointers (or -1 if the constructors are built in a
2801: separate section by the linker), followed by the pointers to the
2802: constructor functions, terminated with a null pointer. The
2803: destructor table has the same format, and begins at __DTOR_LIST__. */
2804:
2805: static void
2806: scan_prog_file (prog_name, which_pass)
2807: char *prog_name;
2808: enum pass which_pass;
2809: {
2810: char *obj;
2811: mo_header_t hdr;
2812: load_all_t *load_array;
2813: load_all_t *load_end;
2814: load_all_t *load_cmd;
2815: int symbol_load_cmds;
2816: off_t offset;
2817: int i;
2818: int num_syms;
2819: int status;
2820: char *str_sect;
2821: struct file_info *obj_file;
2822: int prog_fd;
2823: mo_lcid_t cmd_strings = -1;
2824: symbol_info_t *main_sym = 0;
2825: int rw = (which_pass != PASS_FIRST);
2826:
2827: prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
2828: if (prog_fd < 0)
1.1.1.3 root 2829: fatal_perror ("can't read %s", prog_name);
1.1 root 2830:
2831: obj_file = read_file (prog_name, prog_fd, rw);
2832: obj = obj_file->start;
2833:
2834: status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
2835: if (status != MO_HDR_CONV_SUCCESS)
2836: bad_header (status);
2837:
2838:
2839: /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
2840: since the hardware will automatically swap bytes for us on loading little endian
2841: integers. */
2842:
2843: #ifndef CROSS_COMPILE
2844: if (hdr.moh_magic != MOH_MAGIC_MSB
2845: || hdr.moh_header_version != MOH_HEADER_VERSION
2846: || hdr.moh_byte_order != OUR_BYTE_ORDER
2847: || hdr.moh_data_rep_id != OUR_DATA_REP_ID
2848: || hdr.moh_cpu_type != OUR_CPU_TYPE
2849: || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
2850: || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
2851: {
1.1.1.3 root 2852: fatal ("incompatibilities between object file & expected values");
1.1 root 2853: }
2854: #endif
2855:
2856: if (debug)
2857: print_header (&hdr);
2858:
2859: offset = hdr.moh_first_cmd_off;
2860: load_end = load_array
2861: = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
2862:
2863: /* Build array of load commands, calculating the offsets */
2864: for (i = 0; i < hdr.moh_n_load_cmds; i++)
2865: {
2866: load_union_t *load_hdr; /* load command header */
2867:
2868: load_cmd = load_end++;
2869: load_hdr = (load_union_t *) (obj + offset);
2870:
1.1.1.4 root 2871: /* If modifying the program file, copy the header. */
1.1 root 2872: if (rw)
2873: {
2874: load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
1.1.1.7 root 2875: bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
1.1 root 2876: load_hdr = ptr;
2877:
2878: /* null out old command map, because we will rewrite at the end. */
2879: if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
2880: {
2881: cmd_strings = ptr->map.lcm_ld_cmd_strings;
2882: ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
2883: }
2884: }
2885:
2886: load_cmd->load = load_hdr;
2887: if (load_hdr->hdr.ldci_section_off > 0)
2888: load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
2889:
2890: if (debug)
2891: print_load_command (load_hdr, offset, i);
2892:
2893: offset += load_hdr->hdr.ldci_cmd_size;
2894: }
2895:
2896: /* If the last command is the load command map and is not undefined,
2897: decrement the count of load commands. */
2898: if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
2899: {
2900: load_end--;
2901: hdr.moh_n_load_cmds--;
2902: }
2903:
2904: /* Go through and process each symbol table section. */
2905: symbol_load_cmds = 0;
2906: for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
2907: {
2908: load_union_t *load_hdr = load_cmd->load;
2909:
2910: if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
2911: {
2912: symbol_load_cmds++;
2913:
2914: if (debug)
2915: {
1.1.1.2 root 2916: char *kind = "unknown";
1.1 root 2917:
2918: switch (load_hdr->sym.symc_kind)
2919: {
2920: case SYMC_IMPORTS: kind = "imports"; break;
2921: case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
2922: case SYMC_STABS: kind = "stabs"; break;
2923: }
2924:
2925: fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
2926: symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
2927: }
2928:
2929: if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
2930: continue;
2931:
2932: str_sect = load_array[load_hdr->sym.symc_strings_section].section;
2933: if (str_sect == (char *)0)
2934: fatal ("string section missing");
2935:
2936: if (load_cmd->section == (char *)0)
2937: fatal ("section pointer missing");
2938:
2939: num_syms = load_hdr->sym.symc_nentries;
2940: for (i = 0; i < num_syms; i++)
2941: {
2942: symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
2943: char *name = sym->si_name.symbol_name + str_sect;
2944:
2945: if (name[0] != '_')
2946: continue;
2947:
2948: if (rw)
2949: {
1.1.1.6 root 2950: char *n = name + strlen (name) - strlen (NAME__MAIN);
2951:
2952: if ((n - name) < 0 || strcmp (n, NAME__MAIN))
1.1 root 2953: continue;
1.1.1.6 root 2954: while (n != name)
2955: if (*--n != '_')
2956: continue;
1.1 root 2957:
2958: main_sym = sym;
2959: }
1.1.1.2 root 2960: else
1.1 root 2961: {
1.1.1.2 root 2962: switch (is_ctor_dtor (name))
2963: {
2964: case 1:
2965: add_to_list (&constructors, name);
2966: break;
2967:
2968: case 2:
2969: add_to_list (&destructors, name);
2970: break;
2971:
2972: default: /* not a constructor or destructor */
2973: continue;
2974: }
1.1 root 2975: }
2976:
2977: if (debug)
2978: fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
2979: sym->si_type, sym->si_sc_type, sym->si_flags, name);
2980: }
2981: }
2982: }
2983:
2984: if (symbol_load_cmds == 0)
1.1.1.3 root 2985: fatal ("no symbol table found");
1.1 root 2986:
2987: /* Update the program file now, rewrite header and load commands. At present,
2988: we assume that there is enough space after the last load command to insert
2989: one more. Since the first section written out is page aligned, and the
2990: number of load commands is small, this is ok for the present. */
2991:
2992: if (rw)
2993: {
2994: load_union_t *load_map;
2995: size_t size;
2996:
2997: if (cmd_strings == -1)
1.1.1.3 root 2998: fatal ("no cmd_strings found");
2999:
3000: /* Add __main to initializer list.
3001: If we are building a program instead of a shared library, don't
3002: do anything, since in the current version, you cannot do mallocs
3003: and such in the constructors. */
1.1 root 3004:
1.1.1.3 root 3005: if (main_sym != (symbol_info_t *)0
3006: && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
1.1 root 3007: add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3008:
3009: if (debug)
3010: fprintf (stderr, "\nUpdating header and load commands.\n\n");
3011:
3012: hdr.moh_n_load_cmds++;
3013: size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3014:
3015: /* Create new load command map. */
3016: if (debug)
3017: fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
3018: (int)hdr.moh_n_load_cmds, (long)size);
3019:
3020: load_map = (load_union_t *) xcalloc (1, size);
3021: load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3022: load_map->map.ldc_header.ldci_cmd_size = size;
3023: load_map->map.lcm_ld_cmd_strings = cmd_strings;
3024: load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3025: load_array[hdr.moh_n_load_cmds-1].load = load_map;
3026:
3027: offset = hdr.moh_first_cmd_off;
3028: for (i = 0; i < hdr.moh_n_load_cmds; i++)
3029: {
3030: load_map->map.lcm_map[i] = offset;
3031: if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3032: hdr.moh_load_map_cmd_off = offset;
3033:
3034: offset += load_array[i].load->hdr.ldci_cmd_size;
3035: }
3036:
3037: hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3038:
3039: if (debug)
3040: print_header (&hdr);
3041:
3042: /* Write header */
3043: status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3044: if (status != MO_HDR_CONV_SUCCESS)
3045: bad_header (status);
3046:
3047: if (debug)
3048: fprintf (stderr, "writing load commands.\n\n");
3049:
3050: /* Write load commands */
3051: offset = hdr.moh_first_cmd_off;
3052: for (i = 0; i < hdr.moh_n_load_cmds; i++)
3053: {
3054: load_union_t *load_hdr = load_array[i].load;
3055: size_t size = load_hdr->hdr.ldci_cmd_size;
3056:
3057: if (debug)
3058: print_load_command (load_hdr, offset, i);
3059:
1.1.1.7 root 3060: bcopy ((char *)load_hdr, (char *)(obj + offset), size);
1.1 root 3061: offset += size;
3062: }
3063: }
3064:
3065: end_file (obj_file);
3066:
3067: if (close (prog_fd))
1.1.1.3 root 3068: fatal_perror ("closing %s", prog_name);
1.1 root 3069:
3070: if (debug)
3071: fprintf (stderr, "\n");
3072: }
3073:
3074:
3075: /* Add a function table to the load commands to call a function
1.1.1.2 root 3076: on initiation or termination of the process. */
1.1 root 3077:
3078: static void
3079: add_func_table (hdr_p, load_array, sym, type)
3080: mo_header_t *hdr_p; /* pointer to global header */
3081: load_all_t *load_array; /* array of ptrs to load cmds */
3082: symbol_info_t *sym; /* pointer to symbol entry */
3083: int type; /* fntc_type value */
3084: {
3085: /* Add a new load command. */
3086: int num_cmds = ++hdr_p->moh_n_load_cmds;
3087: int load_index = num_cmds - 1;
3088: size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3089: load_union_t *ptr = xcalloc (1, size);
3090: load_all_t *load_cmd;
3091: int i;
3092:
3093: /* Set the unresolved address bit in the header to force the loader to be
3094: used, since kernel exec does not call the initialization functions. */
3095: hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3096:
3097: load_cmd = &load_array[load_index];
3098: load_cmd->load = ptr;
3099: load_cmd->section = (char *)0;
3100:
3101: /* Fill in func table load command. */
3102: ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3103: ptr->func.ldc_header.ldci_cmd_size = size;
3104: ptr->func.ldc_header.ldci_section_off = 0;
3105: ptr->func.ldc_header.ldci_section_len = 0;
3106: ptr->func.fntc_type = type;
3107: ptr->func.fntc_nentries = 1;
3108:
3109: /* copy address, turn it from abs. address to (region,offset) if necessary. */
3110: /* Is the symbol already expressed as (region, offset)? */
3111: if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3112: {
3113: ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3114: ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3115: }
3116:
3117: /* If not, figure out which region it's in. */
3118: else
3119: {
3120: mo_vm_addr_t addr = sym->si_value.abs_val;
3121: int found = 0;
3122:
3123: for (i = 0; i < load_index; i++)
3124: {
3125: if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3126: {
3127: region_command_t *region_ptr = &load_array[i].load->region;
3128:
3129: if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3130: && addr >= region_ptr->regc_addr.vm_addr
3131: && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3132: {
3133: ptr->func.fntc_entry_loc[0].adr_lcid = i;
3134: ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3135: found++;
3136: break;
3137: }
3138: }
3139: }
3140:
3141: if (!found)
3142: fatal ("could not convert 0x%l.8x into a region", addr);
3143: }
3144:
3145: if (debug)
3146: fprintf (stderr,
3147: "%s function, region %d, offset = %ld (0x%.8lx)\n",
3148: (type == FNTC_INITIALIZATION) ? "init" : "term",
3149: (int)ptr->func.fntc_entry_loc[i].adr_lcid,
3150: (long)ptr->func.fntc_entry_loc[i].adr_sctoff,
3151: (long)ptr->func.fntc_entry_loc[i].adr_sctoff);
3152:
3153: }
3154:
3155:
3156: /* Print the global header for an OSF/rose object. */
3157:
3158: static void
3159: print_header (hdr_ptr)
3160: mo_header_t *hdr_ptr;
3161: {
3162: fprintf (stderr, "\nglobal header:\n");
3163: fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3164: fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3165: fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3166: fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3167: fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3168: fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3169: fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3170: fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3171: fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3172: fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3173: fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3174: fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3175: fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3176: fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3177: fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3178:
3179: if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3180: fprintf (stderr, ", relocatable");
3181:
3182: if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3183: fprintf (stderr, ", linkable");
3184:
3185: if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3186: fprintf (stderr, ", execable");
3187:
3188: if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3189: fprintf (stderr, ", executable");
3190:
3191: if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3192: fprintf (stderr, ", unresolved");
3193:
3194: fprintf (stderr, "\n\n");
3195: return;
3196: }
3197:
3198:
3199: /* Print a short summary of a load command. */
3200:
3201: static void
3202: print_load_command (load_hdr, offset, number)
3203: load_union_t *load_hdr;
3204: size_t offset;
3205: int number;
3206: {
3207: mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3208: char *type_str = (char *)0;
3209:
3210: switch (type)
3211: {
3212: case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3213: case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3214: case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3215: case LDC_STRINGS: type_str = "STRINGS"; break;
3216: case LDC_REGION: type_str = "REGION"; break;
3217: case LDC_RELOC: type_str = "RELOC"; break;
3218: case LDC_PACKAGE: type_str = "PACKAGE"; break;
3219: case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3220: case LDC_ENTRY: type_str = "ENTRY"; break;
3221: case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3222: case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3223: }
3224:
3225: fprintf (stderr,
3226: "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3227: number,
3228: (long) load_hdr->hdr.ldci_cmd_size,
3229: (long) offset,
3230: (long) load_hdr->hdr.ldci_section_off,
3231: (long) load_hdr->hdr.ldci_section_len);
3232:
3233: if (type_str == (char *)0)
3234: fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3235:
3236: else if (type != LDC_REGION)
3237: fprintf (stderr, ", ty: %s\n", type_str);
3238:
3239: else
3240: {
3241: char *region = "";
3242: switch (load_hdr->region.regc_usage_type)
3243: {
3244: case REG_TEXT_T: region = ", .text"; break;
3245: case REG_DATA_T: region = ", .data"; break;
3246: case REG_BSS_T: region = ", .bss"; break;
3247: case REG_GLUE_T: region = ", .glue"; break;
3248: #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3249: case REG_RDATA_T: region = ", .rdata"; break;
3250: case REG_SDATA_T: region = ", .sdata"; break;
3251: case REG_SBSS_T: region = ", .sbss"; break;
3252: #endif
3253: }
3254:
3255: fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3256: type_str,
3257: (long) load_hdr->region.regc_vm_addr,
3258: (long) load_hdr->region.regc_vm_size,
3259: region);
3260: }
3261:
3262: return;
3263: }
3264:
3265:
3266: /* Fatal error when {en,de}code_mach_o_header fails. */
3267:
3268: static void
3269: bad_header (status)
3270: int status;
3271: {
3272: char *msg = (char *)0;
3273:
3274: switch (status)
3275: {
3276: case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break;
3277: case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break;
3278: case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break;
3279: case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break;
3280: case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break;
3281: case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break;
3282: }
3283:
3284: if (msg == (char *)0)
3285: fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3286: else
3287: fatal ("%s", msg);
3288: }
3289:
3290:
3291: /* Read a file into a memory buffer. */
3292:
3293: static struct file_info *
3294: read_file (name, fd, rw)
3295: char *name; /* filename */
3296: int fd; /* file descriptor */
3297: int rw; /* read/write */
3298: {
3299: struct stat stat_pkt;
3300: struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3301: #ifdef USE_MMAP
3302: static int page_size;
3303: #endif
3304:
3305: if (fstat (fd, &stat_pkt) < 0)
3306: fatal_perror ("fstat %s", name);
3307:
3308: p->name = name;
3309: p->size = stat_pkt.st_size;
3310: p->rounded_size = stat_pkt.st_size;
3311: p->fd = fd;
3312: p->rw = rw;
3313:
3314: #ifdef USE_MMAP
3315: if (debug)
3316: fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3317:
3318: if (page_size == 0)
3319: page_size = sysconf (_SC_PAGE_SIZE);
3320:
3321: p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3322: p->start = mmap ((caddr_t)0,
3323: (rw) ? p->rounded_size : p->size,
3324: (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3325: MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3326: fd,
3327: 0L);
3328:
3329: if (p->start != (char *)0 && p->start != (char *)-1)
3330: p->use_mmap = 1;
3331:
3332: else
3333: #endif /* USE_MMAP */
3334: {
3335: long len;
3336:
3337: if (debug)
3338: fprintf (stderr, "read %s\n", name);
3339:
3340: p->use_mmap = 0;
3341: p->start = xmalloc (p->size);
3342: if (lseek (fd, 0L, SEEK_SET) < 0)
3343: fatal_perror ("lseek to 0 on %s", name);
3344:
3345: len = read (fd, p->start, p->size);
3346: if (len < 0)
3347: fatal_perror ("read %s", name);
3348:
3349: if (len != p->size)
3350: fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3351: }
3352:
3353: return p;
3354: }
3355:
3356: /* Do anything necessary to write a file back from memory. */
3357:
3358: static void
3359: end_file (ptr)
3360: struct file_info *ptr; /* file information block */
3361: {
3362: #ifdef USE_MMAP
3363: if (ptr->use_mmap)
3364: {
3365: if (ptr->rw)
3366: {
3367: if (debug)
3368: fprintf (stderr, "msync %s\n", ptr->name);
3369:
3370: if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3371: fatal_perror ("msync %s", ptr->name);
3372: }
3373:
3374: if (debug)
3375: fprintf (stderr, "munmap %s\n", ptr->name);
3376:
3377: if (munmap (ptr->start, ptr->size))
3378: fatal_perror ("munmap %s", ptr->name);
3379: }
3380: else
3381: #endif /* USE_MMAP */
3382: {
3383: if (ptr->rw)
3384: {
3385: long len;
3386:
3387: if (debug)
3388: fprintf (stderr, "write %s\n", ptr->name);
3389:
3390: if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3391: fatal_perror ("lseek to 0 on %s", ptr->name);
3392:
3393: len = write (ptr->fd, ptr->start, ptr->size);
3394: if (len < 0)
1.1.1.8 root 3395: fatal_perror ("write %s", ptr->name);
1.1 root 3396:
3397: if (len != ptr->size)
3398: fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3399: }
3400:
1.1.1.8 root 3401: free (ptr->start);
1.1 root 3402: }
3403:
1.1.1.8 root 3404: free (ptr);
1.1 root 3405: }
3406:
3407: #endif /* OBJECT_FORMAT_ROSE */
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