1 /* Collect static initialization info into data structures that can be
2 traversed by C++ initialization and finalization routines.
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 1999, 2000, 2001 Free Software Foundation, Inc.
5 Contributed by Chris Smith (csmith@convex.com).
6 Heavily modified by Michael Meissner (meissner@cygnus.com),
7 Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com).
9 This file is part of GCC.
11 GCC is free software; you can redistribute it and/or modify it under
12 the terms of the GNU General Public License as published by the Free
13 Software Foundation; either version 2, or (at your option) any later
16 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
17 WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 You should have received a copy of the GNU General Public License
22 along with GCC; see the file COPYING. If not, write to the Free
23 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
27 /* Build tables of static constructors and destructors and run ld. */
32 #if ! defined( SIGCHLD ) && defined( SIGCLD )
33 # define SIGCHLD SIGCLD
36 #ifdef vfork /* Autoconf may define this to fork for us. */
37 # define VFORK_STRING "fork"
39 # define VFORK_STRING "vfork"
45 #define vfork() (decc$$alloc_vfork_blocks() >= 0 ? \
46 lib$get_current_invo_context(decc$$get_vfork_jmpbuf()) : -1)
49 #ifndef LIBRARY_PATH_ENV
50 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
61 /* Obstack allocation and deallocation routines. */
62 #define obstack_chunk_alloc xmalloc
63 #define obstack_chunk_free free
65 /* On certain systems, we have code that works by scanning the object file
66 directly. But this code uses system-specific header files and library
67 functions, so turn it off in a cross-compiler. Likewise, the names of
68 the utilities are not correct for a cross-compiler; we have to hope that
69 cross-versions are in the proper directories. */
72 #undef SUNOS4_SHARED_LIBRARIES
73 #undef OBJECT_FORMAT_COFF
74 #undef OBJECT_FORMAT_ROSE
76 #undef REAL_LD_FILE_NAME
77 #undef REAL_NM_FILE_NAME
78 #undef REAL_STRIP_FILE_NAME
81 /* If we cannot use a special method, use the ordinary one:
82 run nm to find what symbols are present.
83 In a cross-compiler, this means you need a cross nm,
84 but that is not quite as unpleasant as special headers. */
86 #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
87 #define OBJECT_FORMAT_NONE
90 #ifdef OBJECT_FORMAT_COFF
99 /* Many versions of ldfcn.h define these. */
107 /* Some systems have an ISCOFF macro, but others do not. In some cases
108 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
109 that either do not have an ISCOFF macro in /usr/include or for those
110 where it is wrong. */
113 #define MY_ISCOFF(X) ISCOFF (X)
116 #endif /* OBJECT_FORMAT_COFF */
118 #ifdef OBJECT_FORMAT_ROSE
125 #include <sys/mman.h>
129 #include <mach_o_format.h>
130 #include <mach_o_header.h>
131 #include <mach_o_vals.h>
132 #include <mach_o_types.h>
134 #endif /* OBJECT_FORMAT_ROSE */
136 #ifdef OBJECT_FORMAT_NONE
138 /* Default flags to pass to nm. */
140 #define NM_FLAGS "-n"
143 #endif /* OBJECT_FORMAT_NONE */
145 /* Some systems use __main in a way incompatible with its use in gcc, in these
146 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
147 give the same symbol without quotes for an alternative entry point. You
148 must define both, or neither. */
150 #define NAME__MAIN "__main"
151 #define SYMBOL__MAIN __main
154 /* This must match tree.h. */
155 #define DEFAULT_INIT_PRIORITY 65535
157 #if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES
158 #define SCAN_LIBRARIES
162 int do_collecting = 1;
164 int do_collecting = 0;
167 /* Nonzero if we should suppress the automatic demangling of identifiers
168 in linker error messages. Set from COLLECT_NO_DEMANGLE. */
171 /* Linked lists of constructor and destructor names. */
187 /* Enumeration giving which pass this is for scanning the program file. */
190 PASS_FIRST, /* without constructors */
191 PASS_OBJ, /* individual objects */
192 PASS_LIB, /* looking for shared libraries */
193 PASS_SECOND /* with constructors linked in */
196 int vflag; /* true if -v */
197 static int rflag; /* true if -r */
198 static int strip_flag; /* true if -s */
199 #ifdef COLLECT_EXPORT_LIST
200 static int export_flag; /* true if -bE */
201 static int aix64_flag; /* true if -b64 */
204 int debug; /* true if -debug */
206 static int shared_obj; /* true if -shared */
208 static const char *c_file; /* <xxx>.c for constructor/destructor list. */
209 static const char *o_file; /* <xxx>.o for constructor/destructor list. */
210 #ifdef COLLECT_EXPORT_LIST
211 static const char *export_file; /* <xxx>.x for AIX export list. */
213 const char *ldout; /* File for ld errors. */
214 static const char *output_file; /* Output file for ld. */
215 static const char *nm_file_name; /* pathname of nm */
217 static const char *ldd_file_name; /* pathname of ldd (or equivalent) */
219 static const char *strip_file_name; /* pathname of strip */
220 const char *c_file_name; /* pathname of gcc */
221 static char *initname, *fininame; /* names of init and fini funcs */
223 static struct head constructors; /* list of constructors found */
224 static struct head destructors; /* list of destructors found */
225 #ifdef COLLECT_EXPORT_LIST
226 static struct head exports; /* list of exported symbols */
228 static struct head frame_tables; /* list of frame unwind info tables */
230 struct obstack temporary_obstack;
231 struct obstack permanent_obstack;
232 char * temporary_firstobj;
234 /* Holds the return value of pexecute. */
237 /* Defined in the automatically-generated underscore.c. */
238 extern int prepends_underscore;
240 #ifndef GET_ENV_PATH_LIST
241 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
244 /* Structure to hold all the directories in which to search for files to
249 const char *prefix; /* String to prepend to the path. */
250 struct prefix_list *next; /* Next in linked list. */
255 struct prefix_list *plist; /* List of prefixes to try */
256 int max_len; /* Max length of a prefix in PLIST */
257 const char *name; /* Name of this list (used in config stuff) */
260 #ifdef COLLECT_EXPORT_LIST
261 /* Lists to keep libraries to be scanned for global constructors/destructors. */
262 static struct head libs; /* list of libraries */
263 static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */
264 static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */
265 static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs,
266 &libpath_lib_dirs, NULL};
267 static const char *const libexts[3] = {"a", "so", NULL}; /* possible library extentions */
270 static void handler PARAMS ((int));
271 static int is_ctor_dtor PARAMS ((const char *));
272 static char *find_a_file PARAMS ((struct path_prefix *, const char *));
273 static void add_prefix PARAMS ((struct path_prefix *, const char *));
274 static void prefix_from_env PARAMS ((const char *, struct path_prefix *));
275 static void prefix_from_string PARAMS ((const char *, struct path_prefix *));
276 static void do_wait PARAMS ((const char *));
277 static void fork_execute PARAMS ((const char *, char **));
278 static void maybe_unlink PARAMS ((const char *));
279 static void add_to_list PARAMS ((struct head *, const char *));
280 static int extract_init_priority PARAMS ((const char *));
281 static void sort_ids PARAMS ((struct head *));
282 static void write_list PARAMS ((FILE *, const char *, struct id *));
283 #ifdef COLLECT_EXPORT_LIST
284 static void dump_list PARAMS ((FILE *, const char *, struct id *));
287 static void dump_prefix_list PARAMS ((FILE *, const char *, struct prefix_list *));
289 static void write_list_with_asm PARAMS ((FILE *, const char *, struct id *));
290 static void write_c_file PARAMS ((FILE *, const char *));
291 static void write_c_file_stat PARAMS ((FILE *, const char *));
292 #ifndef LD_INIT_SWITCH
293 static void write_c_file_glob PARAMS ((FILE *, const char *));
295 static void scan_prog_file PARAMS ((const char *, enum pass));
296 #ifdef SCAN_LIBRARIES
297 static void scan_libraries PARAMS ((const char *));
299 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
300 static int is_in_args PARAMS ((const char *, const char **, const char **));
302 #ifdef COLLECT_EXPORT_LIST
303 static int is_in_list PARAMS ((const char *, struct id *));
304 static void write_aix_file PARAMS ((FILE *, struct id *));
305 static char *resolve_lib_name PARAMS ((const char *));
306 static int ignore_library PARAMS ((const char *));
308 static char *extract_string PARAMS ((const char **));
323 while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
326 close (fdtmp[--fdx]);
332 /* Delete tempfiles and exit function. */
335 collect_exit (status)
338 if (c_file != 0 && c_file[0])
339 maybe_unlink (c_file);
341 if (o_file != 0 && o_file[0])
342 maybe_unlink (o_file);
344 #ifdef COLLECT_EXPORT_LIST
345 if (export_file != 0 && export_file[0])
346 maybe_unlink (export_file);
349 if (ldout != 0 && ldout[0])
352 maybe_unlink (ldout);
355 if (status != 0 && output_file != 0 && output_file[0])
356 maybe_unlink (output_file);
362 /* Notify user of a non-error. */
364 notice VPARAMS ((const char *msgid, ...))
367 VA_FIXEDARG (ap, const char *, msgid);
369 vfprintf (stderr, _(msgid), ap);
373 /* Die when sys call fails. */
376 fatal_perror VPARAMS ((const char * msgid, ...))
381 VA_FIXEDARG (ap, const char *, msgid);
383 fprintf (stderr, "collect2: ");
384 vfprintf (stderr, _(msgid), ap);
385 fprintf (stderr, ": %s\n", xstrerror (e));
388 collect_exit (FATAL_EXIT_CODE);
394 fatal VPARAMS ((const char * msgid, ...))
397 VA_FIXEDARG (ap, const char *, msgid);
399 fprintf (stderr, "collect2: ");
400 vfprintf (stderr, _(msgid), ap);
401 fprintf (stderr, "\n");
404 collect_exit (FATAL_EXIT_CODE);
407 /* Write error message. */
410 error VPARAMS ((const char * msgid, ...))
413 VA_FIXEDARG (ap, const char *, msgid);
415 fprintf (stderr, "collect2: ");
416 vfprintf (stderr, _(msgid), ap);
417 fprintf (stderr, "\n");
421 /* In case obstack is linked in, and abort is defined to fancy_abort,
422 provide a default entry. */
427 fatal ("internal error");
434 if (c_file != 0 && c_file[0])
435 maybe_unlink (c_file);
437 if (o_file != 0 && o_file[0])
438 maybe_unlink (o_file);
440 if (ldout != 0 && ldout[0])
441 maybe_unlink (ldout);
443 #ifdef COLLECT_EXPORT_LIST
444 if (export_file != 0 && export_file[0])
445 maybe_unlink (export_file);
448 signal (signo, SIG_DFL);
449 kill (getpid (), signo);
457 return access (name, R_OK) == 0;
460 /* Parse a reasonable subset of shell quoting syntax. */
477 obstack_1grow (&temporary_obstack, c);
478 else if (! inside && c == ' ')
480 else if (! inside && c == '\\')
485 obstack_1grow (&temporary_obstack, c);
488 obstack_1grow (&temporary_obstack, '\0');
490 return obstack_finish (&temporary_obstack);
497 FILE *stream = fopen (name, "r");
504 while (c = getc (stream),
505 c != EOF && (ISALNUM (c) || c == '_' || c == '$' || c == '.'))
506 obstack_1grow (&temporary_obstack, c);
507 if (obstack_object_size (&temporary_obstack) > 0)
509 const char *word, *p;
511 obstack_1grow (&temporary_obstack, '\0');
512 word = obstack_finish (&temporary_obstack);
515 ++word, putc ('.', stderr);
517 if (*p == '_' && prepends_underscore)
523 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
528 fputs (result, stderr);
530 diff = strlen (word) - strlen (result);
531 while (diff > 0 && c == ' ')
532 --diff, putc (' ', stderr);
533 while (diff < 0 && c == ' ')
534 ++diff, c = getc (stream);
539 fputs (word, stderr);
542 obstack_free (&temporary_obstack, temporary_firstobj);
551 /* Decide whether the given symbol is: a constructor (1), a destructor
552 (2), a routine in a shared object that calls all the constructors
553 (3) or destructors (4), a DWARF exception-handling table (5), or
554 nothing special (0). */
560 struct names { const char *const name; const int len; const int ret;
561 const int two_underscores; };
565 const char *orig_s = s;
567 static struct names special[] = {
568 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
569 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
570 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
571 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
572 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
573 #ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
574 cfront has its own linker procedure to collect them;
575 if collect2 gets them too, they get collected twice
576 when the cfront procedure is run and the compiler used
577 for linking happens to be GCC. */
578 { "sti__", sizeof ("sti__")-1, 1, 1 },
579 { "std__", sizeof ("std__")-1, 2, 1 },
580 #endif /* CFRONT_LOSSAGE */
584 while ((ch = *s) == '_')
590 for (p = &special[0]; p->len > 0; p++)
593 && (!p->two_underscores || ((s - orig_s) >= 2))
594 && strncmp(s, p->name, p->len) == 0)
602 /* We maintain two prefix lists: one from COMPILER_PATH environment variable
603 and one from the PATH variable. */
605 static struct path_prefix cpath, path;
608 /* This is the name of the target machine. We use it to form the name
609 of the files to execute. */
611 static const char *const target_machine = TARGET_MACHINE;
614 /* Search for NAME using prefix list PPREFIX. We only look for executable
617 Return 0 if not found, otherwise return its name, allocated with malloc. */
620 find_a_file (pprefix, name)
621 struct path_prefix *pprefix;
625 struct prefix_list *pl;
626 int len = pprefix->max_len + strlen (name) + 1;
629 fprintf (stderr, "Looking for '%s'\n", name);
631 #ifdef HOST_EXECUTABLE_SUFFIX
632 len += strlen (HOST_EXECUTABLE_SUFFIX);
635 temp = xmalloc (len);
637 /* Determine the filename to execute (special case for absolute paths). */
640 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
641 || (*name && name[1] == ':')
645 if (access (name, X_OK) == 0)
650 fprintf (stderr, " - found: absolute path\n");
655 #ifdef HOST_EXECUTABLE_SUFFIX
656 /* Some systems have a suffix for executable files.
657 So try appending that. */
659 strcat (temp, HOST_EXECUTABLE_SUFFIX);
661 if (access (temp, X_OK) == 0)
666 fprintf (stderr, " - failed to locate using absolute path\n");
669 for (pl = pprefix->plist; pl; pl = pl->next)
673 strcpy (temp, pl->prefix);
676 if (stat (temp, &st) >= 0
677 && ! S_ISDIR (st.st_mode)
678 && access (temp, X_OK) == 0)
681 #ifdef HOST_EXECUTABLE_SUFFIX
682 /* Some systems have a suffix for executable files.
683 So try appending that. */
684 strcat (temp, HOST_EXECUTABLE_SUFFIX);
686 if (stat (temp, &st) >= 0
687 && ! S_ISDIR (st.st_mode)
688 && access (temp, X_OK) == 0)
693 if (debug && pprefix->plist == NULL)
694 fprintf (stderr, " - failed: no entries in prefix list\n");
700 /* Add an entry for PREFIX to prefix list PPREFIX. */
703 add_prefix (pprefix, prefix)
704 struct path_prefix *pprefix;
707 struct prefix_list *pl, **prev;
712 for (pl = pprefix->plist; pl->next; pl = pl->next)
717 prev = &pprefix->plist;
719 /* Keep track of the longest prefix */
721 len = strlen (prefix);
722 if (len > pprefix->max_len)
723 pprefix->max_len = len;
725 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
726 pl->prefix = xstrdup (prefix);
731 pl->next = (struct prefix_list *) 0;
735 /* Take the value of the environment variable ENV, break it into a path, and
736 add of the entries to PPREFIX. */
739 prefix_from_env (env, pprefix)
741 struct path_prefix *pprefix;
744 GET_ENV_PATH_LIST (p, env);
747 prefix_from_string (p, pprefix);
751 prefix_from_string (p, pprefix)
753 struct path_prefix *pprefix;
755 const char *startp, *endp;
756 char *nstore = (char *) xmalloc (strlen (p) + 3);
759 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
764 if (*endp == PATH_SEPARATOR || *endp == 0)
766 strncpy (nstore, startp, endp-startp);
769 strcpy (nstore, "./");
771 else if (! IS_DIR_SEPARATOR (endp[-1]))
773 nstore[endp-startp] = DIR_SEPARATOR;
774 nstore[endp-startp+1] = 0;
777 nstore[endp-startp] = 0;
780 fprintf (stderr, " - add prefix: %s\n", nstore);
782 add_prefix (pprefix, nstore);
785 endp = startp = endp + 1;
794 int main PARAMS ((int, char *[]));
800 static const char *const ld_suffix = "ld";
801 static const char *const real_ld_suffix = "real-ld";
802 static const char *const collect_ld_suffix = "collect-ld";
803 static const char *const nm_suffix = "nm";
804 static const char *const gnm_suffix = "gnm";
806 static const char *const ldd_suffix = LDD_SUFFIX;
808 static const char *const strip_suffix = "strip";
809 static const char *const gstrip_suffix = "gstrip";
812 /* If we look for a program in the compiler directories, we just use
813 the short name, since these directories are already system-specific.
814 But it we look for a program in the system directories, we need to
815 qualify the program name with the target machine. */
817 const char *const full_ld_suffix =
818 concat(target_machine, "-", ld_suffix, NULL);
819 const char *const full_nm_suffix =
820 concat (target_machine, "-", nm_suffix, NULL);
821 const char *const full_gnm_suffix =
822 concat (target_machine, "-", gnm_suffix, NULL);
824 const char *const full_ldd_suffix =
825 concat (target_machine, "-", ldd_suffix, NULL);
827 const char *const full_strip_suffix =
828 concat (target_machine, "-", strip_suffix, NULL);
829 const char *const full_gstrip_suffix =
830 concat (target_machine, "-", gstrip_suffix, NULL);
832 const char *const full_ld_suffix = ld_suffix;
833 const char *const full_nm_suffix = nm_suffix;
834 const char *const full_gnm_suffix = gnm_suffix;
836 const char *const full_ldd_suffix = ldd_suffix;
838 const char *const full_strip_suffix = strip_suffix;
839 const char *const full_gstrip_suffix = gstrip_suffix;
840 #endif /* CROSS_COMPILE */
844 #ifdef COLLECT_EXPORT_LIST
847 const char *ld_file_name;
858 int num_c_args = argc+9;
860 no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
862 /* Suppress demangling by the real linker, which may be broken. */
863 putenv (xstrdup ("COLLECT_NO_DEMANGLE="));
865 #if defined (COLLECT2_HOST_INITIALIZATION)
866 /* Perform system dependent initialization, if neccessary. */
867 COLLECT2_HOST_INITIALIZATION;
871 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
872 receive the signal. A different setting is inheritable */
873 signal (SIGCHLD, SIG_DFL);
876 /* LC_CTYPE determines the character set used by the terminal so it has be set
877 to output messages correctly. */
879 #ifdef HAVE_LC_MESSAGES
880 setlocale (LC_CTYPE, "");
881 setlocale (LC_MESSAGES, "");
883 setlocale (LC_ALL, "");
886 (void) bindtextdomain (PACKAGE, localedir);
887 (void) textdomain (PACKAGE);
889 /* Do not invoke xcalloc before this point, since locale needs to be
890 set first, in case a diagnostic is issued. */
892 ld1 = (const char **)(ld1_argv = (char **) xcalloc(sizeof (char *), argc+3));
893 ld2 = (const char **)(ld2_argv = (char **) xcalloc(sizeof (char *), argc+10));
894 object = (const char **)(object_lst = (char **) xcalloc(sizeof (char *), argc));
900 /* Parse command line early for instances of -debug. This allows
901 the debug flag to be set before functions like find_a_file()
906 for (i = 1; argv[i] != NULL; i ++)
907 if (! strcmp (argv[i], "-debug"))
912 #ifndef DEFAULT_A_OUT_NAME
913 output_file = "a.out";
915 output_file = DEFAULT_A_OUT_NAME;
918 obstack_begin (&temporary_obstack, 0);
919 obstack_begin (&permanent_obstack, 0);
920 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
922 current_demangling_style = auto_demangling;
923 p = getenv ("COLLECT_GCC_OPTIONS");
926 const char *q = extract_string (&p);
927 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
930 obstack_free (&temporary_obstack, temporary_firstobj);
932 /* -fno-exceptions -w */
935 c_ptr = (const char **)
936 (c_argv = (char **) xcalloc (sizeof (char *), num_c_args));
939 fatal ("no arguments");
942 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
943 signal (SIGQUIT, handler);
945 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
946 signal (SIGINT, handler);
948 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
949 signal (SIGALRM, handler);
952 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
953 signal (SIGHUP, handler);
955 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
956 signal (SIGSEGV, handler);
958 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
959 signal (SIGBUS, handler);
962 /* Extract COMPILER_PATH and PATH into our prefix list. */
963 prefix_from_env ("COMPILER_PATH", &cpath);
964 prefix_from_env ("PATH", &path);
966 /* Try to discover a valid linker/nm/strip to use. */
968 /* Maybe we know the right file to use (if not cross). */
970 #ifdef DEFAULT_LINKER
971 if (access (DEFAULT_LINKER, X_OK) == 0)
972 ld_file_name = DEFAULT_LINKER;
973 if (ld_file_name == 0)
975 #ifdef REAL_LD_FILE_NAME
976 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
977 if (ld_file_name == 0)
979 /* Search the (target-specific) compiler dirs for ld'. */
980 ld_file_name = find_a_file (&cpath, real_ld_suffix);
981 /* Likewise for `collect-ld'. */
982 if (ld_file_name == 0)
983 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
984 /* Search the compiler directories for `ld'. We have protection against
985 recursive calls in find_a_file. */
986 if (ld_file_name == 0)
987 ld_file_name = find_a_file (&cpath, ld_suffix);
988 /* Search the ordinary system bin directories
989 for `ld' (if native linking) or `TARGET-ld' (if cross). */
990 if (ld_file_name == 0)
991 ld_file_name = find_a_file (&path, full_ld_suffix);
993 #ifdef REAL_NM_FILE_NAME
994 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
995 if (nm_file_name == 0)
997 nm_file_name = find_a_file (&cpath, gnm_suffix);
998 if (nm_file_name == 0)
999 nm_file_name = find_a_file (&path, full_gnm_suffix);
1000 if (nm_file_name == 0)
1001 nm_file_name = find_a_file (&cpath, nm_suffix);
1002 if (nm_file_name == 0)
1003 nm_file_name = find_a_file (&path, full_nm_suffix);
1006 ldd_file_name = find_a_file (&cpath, ldd_suffix);
1007 if (ldd_file_name == 0)
1008 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1011 #ifdef REAL_STRIP_FILE_NAME
1012 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1013 if (strip_file_name == 0)
1015 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1016 if (strip_file_name == 0)
1017 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1018 if (strip_file_name == 0)
1019 strip_file_name = find_a_file (&cpath, strip_suffix);
1020 if (strip_file_name == 0)
1021 strip_file_name = find_a_file (&path, full_strip_suffix);
1023 /* Determine the full path name of the C compiler to use. */
1024 c_file_name = getenv ("COLLECT_GCC");
1025 if (c_file_name == 0)
1027 #ifdef CROSS_COMPILE
1028 c_file_name = concat (target_machine, "-gcc", NULL);
1030 c_file_name = "gcc";
1034 p = find_a_file (&cpath, c_file_name);
1036 /* Here it should be safe to use the system search path since we should have
1037 already qualified the name of the compiler when it is needed. */
1039 p = find_a_file (&path, c_file_name);
1044 *ld1++ = *ld2++ = ld_file_name;
1046 /* Make temp file names. */
1047 c_file = make_temp_file (".c");
1048 o_file = make_temp_file (".o");
1049 #ifdef COLLECT_EXPORT_LIST
1050 export_file = make_temp_file (".x");
1052 ldout = make_temp_file (".ld");
1053 *c_ptr++ = c_file_name;
1060 #ifdef COLLECT_EXPORT_LIST
1061 /* Generate a list of directories from LIBPATH. */
1062 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1063 /* Add to this list also two standard directories where
1064 AIX loader always searches for libraries. */
1065 add_prefix (&libpath_lib_dirs, "/lib");
1066 add_prefix (&libpath_lib_dirs, "/usr/lib");
1069 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1071 AIX support needs to know if -shared has been specified before
1072 parsing commandline arguments. */
1074 p = getenv ("COLLECT_GCC_OPTIONS");
1077 const char *q = extract_string (&p);
1078 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1079 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1080 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
1081 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1082 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1084 if (*q == '-' && q[1] == 'B')
1086 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1089 q = extract_string (&p);
1090 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1094 obstack_free (&temporary_obstack, temporary_firstobj);
1095 *c_ptr++ = "-fno-exceptions";
1098 /* !!! When GCC calls collect2,
1099 it does not know whether it is calling collect2 or ld.
1100 So collect2 cannot meaningfully understand any options
1101 except those ld understands.
1102 If you propose to make GCC pass some other option,
1103 just imagine what will happen if ld is really ld!!! */
1105 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1106 /* After the first file, put in the c++ rt0. */
1109 while ((arg = *++argv) != (char *) 0)
1111 *ld1++ = *ld2++ = arg;
1117 #ifdef COLLECT_EXPORT_LIST
1118 /* We want to disable automatic exports on AIX when user
1119 explicitly puts an export list in command line */
1121 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1123 else if (arg[2] == '6' && arg[3] == '4')
1129 if (!strcmp (arg, "-debug"))
1131 /* Already parsed. */
1140 /* place o_file BEFORE this argument! */
1146 #ifdef COLLECT_EXPORT_LIST
1148 /* Resolving full library name. */
1149 const char *s = resolve_lib_name (arg+2);
1151 /* Saving a full library name. */
1152 add_to_list (&libs, s);
1157 #ifdef COLLECT_EXPORT_LIST
1158 /* Saving directories where to search for libraries. */
1160 add_prefix (&cmdline_lib_dirs, arg+2);
1163 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
1165 if (is_in_args (arg, (const char **) ld1_argv, ld1-1))
1168 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
1173 output_file = *ld1++ = *ld2++ = *++argv;
1175 #ifdef SWITCHES_NEED_SPACES
1176 && ! strchr (SWITCHES_NEED_SPACES, arg[1])
1180 output_file = &arg[2];
1189 if (arg[2] == '\0' && do_collecting)
1191 /* We must strip after the nm run, otherwise C++ linking
1192 will not work. Thus we strip in the second ld run, or
1193 else with strip if there is no second ld run. */
1205 else if ((p = strrchr (arg, '.')) != (char *) 0
1206 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1207 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0
1208 || strcmp (p, ".obj") == 0))
1217 /* place o_file BEFORE this argument! */
1223 if (p[1] == 'o' || p[1] == 'l')
1225 #ifdef COLLECT_EXPORT_LIST
1226 /* libraries can be specified directly, i.e. without -l flag. */
1229 /* Saving a full library name. */
1230 add_to_list (&libs, arg);
1236 #ifdef COLLECT_EXPORT_LIST
1237 /* This is added only for debugging purposes. */
1240 fprintf (stderr, "List of libraries:\n");
1241 dump_list (stderr, "\t", libs.first);
1244 /* The AIX linker will discard static constructors in object files if
1245 nothing else in the file is referenced, so look at them first. */
1247 const char **export_object_lst = (const char **)object_lst;
1249 while (export_object_lst < object)
1250 scan_prog_file (*export_object_lst++, PASS_OBJ);
1253 struct id *list = libs.first;
1255 for (; list; list = list->next)
1256 scan_prog_file (list->name, PASS_FIRST);
1261 char *buf = concat ("-bE:", export_file, NULL);
1266 exportf = fopen (export_file, "w");
1267 if (exportf == (FILE *) 0)
1268 fatal_perror ("fopen %s", export_file);
1269 write_aix_file (exportf, exports.first);
1270 if (fclose (exportf))
1271 fatal_perror ("fclose %s", export_file);
1276 *c_ptr = *ld1 = *object = (char *) 0;
1280 notice ("collect2 version %s", version_string);
1281 #ifdef TARGET_VERSION
1284 fprintf (stderr, "\n");
1290 fprintf (stderr, "ld_file_name = %s\n",
1291 (ld_file_name ? ld_file_name : "not found"));
1292 fprintf (stderr, "c_file_name = %s\n",
1293 (c_file_name ? c_file_name : "not found"));
1294 fprintf (stderr, "nm_file_name = %s\n",
1295 (nm_file_name ? nm_file_name : "not found"));
1297 fprintf (stderr, "ldd_file_name = %s\n",
1298 (ldd_file_name ? ldd_file_name : "not found"));
1300 fprintf (stderr, "strip_file_name = %s\n",
1301 (strip_file_name ? strip_file_name : "not found"));
1302 fprintf (stderr, "c_file = %s\n",
1303 (c_file ? c_file : "not found"));
1304 fprintf (stderr, "o_file = %s\n",
1305 (o_file ? o_file : "not found"));
1307 ptr = getenv ("COLLECT_GCC_OPTIONS");
1309 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1311 ptr = getenv ("COLLECT_GCC");
1313 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1315 ptr = getenv ("COMPILER_PATH");
1317 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1319 ptr = getenv (LIBRARY_PATH_ENV);
1321 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr);
1323 fprintf (stderr, "\n");
1326 /* Load the program, searching all libraries and attempting to provide
1327 undefined symbols from repository information. */
1329 /* On AIX we do this later. */
1330 #ifndef COLLECT_EXPORT_LIST
1331 do_tlink (ld1_argv, object_lst);
1334 /* If -r or they will be run via some other method, do not build the
1335 constructor or destructor list, just return now. */
1337 #ifndef COLLECT_EXPORT_LIST
1342 #ifdef COLLECT_EXPORT_LIST
1343 /* Do the link we avoided above if we are exiting. */
1344 do_tlink (ld1_argv, object_lst);
1346 /* But make sure we delete the export file we may have created. */
1347 if (export_file != 0 && export_file[0])
1348 maybe_unlink (export_file);
1350 maybe_unlink (c_file);
1351 maybe_unlink (o_file);
1355 /* Examine the namelist with nm and search it for static constructors
1356 and destructors to call.
1357 Write the constructor and destructor tables to a .s file and reload. */
1359 /* On AIX we already scanned for global constructors/destructors. */
1360 #ifndef COLLECT_EXPORT_LIST
1361 scan_prog_file (output_file, PASS_FIRST);
1364 #ifdef SCAN_LIBRARIES
1365 scan_libraries (output_file);
1370 notice ("%d constructor(s) found\n", constructors.number);
1371 notice ("%d destructor(s) found\n", destructors.number);
1372 notice ("%d frame table(s) found\n", frame_tables.number);
1375 if (constructors.number == 0 && destructors.number == 0
1376 && frame_tables.number == 0
1377 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1378 /* If we will be running these functions ourselves, we want to emit
1379 stubs into the shared library so that we do not have to relink
1380 dependent programs when we add static objects. */
1385 #ifdef COLLECT_EXPORT_LIST
1386 /* Do tlink without additional code generation */
1387 do_tlink (ld1_argv, object_lst);
1389 /* Strip now if it was requested on the command line. */
1392 char **real_strip_argv = (char **) xcalloc (sizeof (char *), 3);
1393 const char ** strip_argv = (const char **) real_strip_argv;
1395 strip_argv[0] = strip_file_name;
1396 strip_argv[1] = output_file;
1397 strip_argv[2] = (char *) 0;
1398 fork_execute ("strip", real_strip_argv);
1401 #ifdef COLLECT_EXPORT_LIST
1402 maybe_unlink (export_file);
1404 maybe_unlink (c_file);
1405 maybe_unlink (o_file);
1409 /* Sort ctor and dtor lists by priority. */
1410 sort_ids (&constructors);
1411 sort_ids (&destructors);
1413 maybe_unlink(output_file);
1414 outf = fopen (c_file, "w");
1415 if (outf == (FILE *) 0)
1416 fatal_perror ("fopen %s", c_file);
1418 write_c_file (outf, c_file);
1421 fatal_perror ("fclose %s", c_file);
1423 /* Tell the linker that we have initializer and finalizer functions. */
1424 #ifdef LD_INIT_SWITCH
1425 #ifdef COLLECT_EXPORT_LIST
1426 *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL);
1428 *ld2++ = LD_INIT_SWITCH;
1430 *ld2++ = LD_FINI_SWITCH;
1435 #ifdef COLLECT_EXPORT_LIST
1438 /* If we did not add export flag to link arguments before, add it to
1439 second link phase now. No new exports should have been added. */
1440 if (! exports.first)
1441 *ld2++ = concat ("-bE:", export_file, NULL);
1443 add_to_list (&exports, initname);
1444 add_to_list (&exports, fininame);
1445 add_to_list (&exports, "_GLOBAL__DI");
1446 add_to_list (&exports, "_GLOBAL__DD");
1447 exportf = fopen (export_file, "w");
1448 if (exportf == (FILE *) 0)
1449 fatal_perror ("fopen %s", export_file);
1450 write_aix_file (exportf, exports.first);
1451 if (fclose (exportf))
1452 fatal_perror ("fclose %s", export_file);
1456 /* End of arguments to second link phase. */
1461 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1462 output_file, c_file);
1463 write_c_file (stderr, "stderr");
1464 fprintf (stderr, "========== end of c_file\n\n");
1465 #ifdef COLLECT_EXPORT_LIST
1466 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1467 write_aix_file (stderr, exports.first);
1468 fprintf (stderr, "========== end of export_file\n\n");
1472 /* Assemble the constructor and destructor tables.
1473 Link the tables in with the rest of the program. */
1475 fork_execute ("gcc", c_argv);
1476 #ifdef COLLECT_EXPORT_LIST
1477 /* On AIX we must call tlink because of possible templates resolution */
1478 do_tlink (ld2_argv, object_lst);
1480 /* Otherwise, simply call ld because tlink is already done */
1481 fork_execute ("ld", ld2_argv);
1483 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1484 constructors/destructors in shared libraries. */
1485 scan_prog_file (output_file, PASS_SECOND);
1488 maybe_unlink (c_file);
1489 maybe_unlink (o_file);
1491 #ifdef COLLECT_EXPORT_LIST
1492 maybe_unlink (export_file);
1499 /* Wait for a process to finish, and exit if a non-zero status is found. */
1507 pwait (pexecute_pid, &status, 0);
1510 if (WIFSIGNALED (status))
1512 int sig = WTERMSIG (status);
1513 error ("%s terminated with signal %d [%s]%s",
1514 prog, sig, strsignal(sig),
1515 status & 0200 ? "" : ", core dumped");
1516 collect_exit (FATAL_EXIT_CODE);
1519 if (WIFEXITED (status))
1520 return WEXITSTATUS (status);
1529 int ret = collect_wait (prog);
1532 error ("%s returned %d exit status", prog, ret);
1538 /* Execute a program, and wait for the reply. */
1541 collect_execute (prog, argv, redir)
1548 int redir_handle = -1;
1549 int stdout_save = -1;
1550 int stderr_save = -1;
1558 fprintf (stderr, "%s", argv[0]);
1560 notice ("[cannot find %s]", prog);
1562 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1563 fprintf (stderr, " %s", str);
1565 fprintf (stderr, "\n");
1571 /* If we cannot find a program we need, complain error. Do this here
1572 since we might not end up needing something that we could not find. */
1575 fatal ("cannot find `%s'", prog);
1579 /* Open response file. */
1580 redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT);
1582 /* Duplicate the stdout and stderr file handles
1583 so they can be restored later. */
1584 stdout_save = dup (STDOUT_FILENO);
1585 if (stdout_save == -1)
1586 fatal_perror ("redirecting stdout: %s", redir);
1587 stderr_save = dup (STDERR_FILENO);
1588 if (stderr_save == -1)
1589 fatal_perror ("redirecting stdout: %s", redir);
1591 /* Redirect stdout & stderr to our response file. */
1592 dup2 (redir_handle, STDOUT_FILENO);
1593 dup2 (redir_handle, STDERR_FILENO);
1596 pexecute_pid = pexecute (argv[0], argv, argv[0], NULL,
1597 &errmsg_fmt, &errmsg_arg,
1598 (PEXECUTE_FIRST | PEXECUTE_LAST | PEXECUTE_SEARCH));
1602 /* Restore stdout and stderr to their previous settings. */
1603 dup2 (stdout_save, STDOUT_FILENO);
1604 dup2 (stderr_save, STDERR_FILENO);
1606 /* Close reponse file. */
1607 close (redir_handle);
1610 if (pexecute_pid == -1)
1611 fatal_perror (errmsg_fmt, errmsg_arg);
1615 fork_execute (prog, argv)
1619 collect_execute (prog, argv, NULL);
1623 /* Unlink a file unless we are debugging. */
1632 notice ("[Leaving %s]\n", file);
1636 static long sequence_number = 0;
1638 /* Add a name to a linked list. */
1641 add_to_list (head_ptr, name)
1642 struct head *head_ptr;
1646 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1648 strcpy (newid->name, name);
1650 if (head_ptr->first)
1651 head_ptr->last->next = newid;
1653 head_ptr->first = newid;
1655 /* Check for duplicate symbols. */
1656 for (p = head_ptr->first;
1657 strcmp (name, p->name) != 0;
1662 head_ptr->last->next = 0;
1667 newid->sequence = ++sequence_number;
1668 head_ptr->last = newid;
1672 /* Grab the init priority number from an init function name that
1673 looks like "_GLOBAL_.I.12345.foo". */
1676 extract_init_priority (name)
1681 while (name[pos] == '_')
1683 pos += 10; /* strlen ("GLOBAL__X_") */
1685 /* Extract init_p number from ctor/dtor name. */
1686 pri = atoi (name + pos);
1687 return pri ? pri : DEFAULT_INIT_PRIORITY;
1690 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
1691 ctors will be run from right to left, dtors from left to right. */
1695 struct head *head_ptr;
1697 /* id holds the current element to insert. id_next holds the next
1698 element to insert. id_ptr iterates through the already sorted elements
1699 looking for the place to insert id. */
1700 struct id *id, *id_next, **id_ptr;
1702 id = head_ptr->first;
1704 /* We don't have any sorted elements yet. */
1705 head_ptr->first = NULL;
1707 for (; id; id = id_next)
1710 id->sequence = extract_init_priority (id->name);
1712 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
1714 /* If the sequence numbers are the same, we put the id from the
1715 file later on the command line later in the list. */
1716 || id->sequence > (*id_ptr)->sequence
1717 /* Hack: do lexical compare, too.
1718 || (id->sequence == (*id_ptr)->sequence
1719 && strcmp (id->name, (*id_ptr)->name) > 0) */
1728 /* Now set the sequence numbers properly so write_c_file works. */
1729 for (id = head_ptr->first; id; id = id->next)
1730 id->sequence = ++sequence_number;
1733 /* Write: `prefix', the names on list LIST, `suffix'. */
1736 write_list (stream, prefix, list)
1743 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1748 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
1749 /* Given a STRING, return nonzero if it occurs in the list in range
1750 [ARGS_BEGIN,ARGS_END). */
1753 is_in_args (string, args_begin, args_end)
1755 const char **args_begin;
1756 const char **args_end;
1758 const char **args_pointer;
1759 for (args_pointer = args_begin; args_pointer != args_end; ++args_pointer)
1760 if (strcmp (string, *args_pointer) == 0)
1764 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
1766 #ifdef COLLECT_EXPORT_LIST
1767 /* This function is really used only on AIX, but may be useful. */
1769 is_in_list (prefix, list)
1775 if (!strcmp (prefix, list->name)) return 1;
1782 /* Added for debugging purpose. */
1783 #ifdef COLLECT_EXPORT_LIST
1785 dump_list (stream, prefix, list)
1792 fprintf (stream, "%s%s,\n", prefix, list->name);
1800 dump_prefix_list (stream, prefix, list)
1803 struct prefix_list *list;
1807 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1814 write_list_with_asm (stream, prefix, list)
1821 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1822 prefix, list->sequence, list->name);
1827 /* Write out the constructor and destructor tables statically (for a shared
1828 object), along with the functions to execute them. */
1831 write_c_file_stat (stream, name)
1833 const char *name ATTRIBUTE_UNUSED;
1837 int frames = (frame_tables.number > 0);
1839 /* Figure out name of output_file, stripping off .so version. */
1840 p = strrchr (output_file, '/');
1856 if (strncmp (q, ".so", 3) == 0)
1865 /* q points to null at end of the string (or . of the .so version) */
1866 prefix = xmalloc (q - p + 1);
1867 strncpy (prefix, p, q - p);
1869 for (r = prefix; *r; r++)
1870 if (!ISALNUM ((unsigned char)*r))
1873 notice ("\nwrite_c_file - output name is %s, prefix is %s\n",
1874 output_file, prefix);
1876 initname = concat ("_GLOBAL__FI_", prefix, NULL);
1877 fininame = concat ("_GLOBAL__FD_", prefix, NULL);
1881 /* Write the tables as C code */
1883 fprintf (stream, "static int count;\n");
1884 fprintf (stream, "typedef void entry_pt();\n");
1885 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1889 write_list_with_asm (stream, "extern void *", frame_tables.first);
1891 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1892 write_list (stream, "\t\t&", frame_tables.first);
1893 fprintf (stream, "\t0\n};\n");
1895 /* This must match what's in frame.h. */
1896 fprintf (stream, "struct object {\n");
1897 fprintf (stream, " void *pc_begin;\n");
1898 fprintf (stream, " void *pc_end;\n");
1899 fprintf (stream, " void *fde_begin;\n");
1900 fprintf (stream, " void *fde_array;\n");
1901 fprintf (stream, " __SIZE_TYPE__ count;\n");
1902 fprintf (stream, " struct object *next;\n");
1903 fprintf (stream, "};\n");
1905 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1906 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1908 fprintf (stream, "static void reg_frame () {\n");
1909 fprintf (stream, "\tstatic struct object ob;\n");
1910 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1911 fprintf (stream, "\t}\n");
1913 fprintf (stream, "static void dereg_frame () {\n");
1914 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1915 fprintf (stream, "\t}\n");
1918 fprintf (stream, "void %s() {\n", initname);
1919 if (constructors.number > 0 || frames)
1921 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1922 write_list (stream, "\t\t", constructors.first);
1924 fprintf (stream, "\treg_frame,\n");
1925 fprintf (stream, "\t};\n");
1926 fprintf (stream, "\tentry_pt **p;\n");
1927 fprintf (stream, "\tif (count++ != 0) return;\n");
1928 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
1929 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1932 fprintf (stream, "\t++count;\n");
1933 fprintf (stream, "}\n");
1934 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1935 fprintf (stream, "void %s() {\n", fininame);
1936 if (destructors.number > 0 || frames)
1938 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1939 write_list (stream, "\t\t", destructors.first);
1941 fprintf (stream, "\tdereg_frame,\n");
1942 fprintf (stream, "\t};\n");
1943 fprintf (stream, "\tentry_pt **p;\n");
1944 fprintf (stream, "\tif (--count != 0) return;\n");
1945 fprintf (stream, "\tp = dtors;\n");
1946 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
1947 destructors.number + frames);
1949 fprintf (stream, "}\n");
1953 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
1954 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
1958 /* Write the constructor/destructor tables. */
1960 #ifndef LD_INIT_SWITCH
1962 write_c_file_glob (stream, name)
1964 const char *name ATTRIBUTE_UNUSED;
1966 /* Write the tables as C code */
1968 int frames = (frame_tables.number > 0);
1970 fprintf (stream, "typedef void entry_pt();\n\n");
1972 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1976 write_list_with_asm (stream, "extern void *", frame_tables.first);
1978 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1979 write_list (stream, "\t\t&", frame_tables.first);
1980 fprintf (stream, "\t0\n};\n");
1982 /* This must match what's in frame.h. */
1983 fprintf (stream, "struct object {\n");
1984 fprintf (stream, " void *pc_begin;\n");
1985 fprintf (stream, " void *pc_end;\n");
1986 fprintf (stream, " void *fde_begin;\n");
1987 fprintf (stream, " void *fde_array;\n");
1988 fprintf (stream, " __SIZE_TYPE__ count;\n");
1989 fprintf (stream, " struct object *next;\n");
1990 fprintf (stream, "};\n");
1992 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1993 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1995 fprintf (stream, "static void reg_frame () {\n");
1996 fprintf (stream, "\tstatic struct object ob;\n");
1997 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1998 fprintf (stream, "\t}\n");
2000 fprintf (stream, "static void dereg_frame () {\n");
2001 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
2002 fprintf (stream, "\t}\n");
2005 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
2006 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
2007 write_list (stream, "\t", constructors.first);
2009 fprintf (stream, "\treg_frame,\n");
2010 fprintf (stream, "\t0\n};\n\n");
2012 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2014 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2015 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2016 write_list (stream, "\t", destructors.first);
2018 fprintf (stream, "\tdereg_frame,\n");
2019 fprintf (stream, "\t0\n};\n\n");
2021 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2022 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2024 #endif /* ! LD_INIT_SWITCH */
2027 write_c_file (stream, name)
2031 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2032 #ifndef LD_INIT_SWITCH
2034 write_c_file_glob (stream, name);
2037 write_c_file_stat (stream, name);
2038 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2041 #ifdef COLLECT_EXPORT_LIST
2043 write_aix_file (stream, list)
2047 for (; list; list = list->next)
2049 fputs (list->name, stream);
2050 putc ('\n', stream);
2055 #ifdef OBJECT_FORMAT_NONE
2057 /* Generic version to scan the name list of the loaded program for
2058 the symbols g++ uses for static constructors and destructors.
2060 The constructor table begins at __CTOR_LIST__ and contains a count
2061 of the number of pointers (or -1 if the constructors are built in a
2062 separate section by the linker), followed by the pointers to the
2063 constructor functions, terminated with a null pointer. The
2064 destructor table has the same format, and begins at __DTOR_LIST__. */
2067 scan_prog_file (prog_name, which_pass)
2068 const char *prog_name;
2069 enum pass which_pass;
2071 void (*int_handler) PARAMS ((int));
2072 void (*quit_handler) PARAMS ((int));
2073 char *real_nm_argv[4];
2074 const char **nm_argv = (const char **) real_nm_argv;
2081 if (which_pass == PASS_SECOND)
2084 /* If we do not have an `nm', complain. */
2085 if (nm_file_name == 0)
2086 fatal ("cannot find `nm'");
2088 nm_argv[argc++] = nm_file_name;
2089 if (NM_FLAGS[0] != '\0')
2090 nm_argv[argc++] = NM_FLAGS;
2092 nm_argv[argc++] = prog_name;
2093 nm_argv[argc++] = (char *) 0;
2095 if (pipe (pipe_fd) < 0)
2096 fatal_perror ("pipe");
2098 inf = fdopen (pipe_fd[0], "r");
2099 if (inf == (FILE *) 0)
2100 fatal_perror ("fdopen");
2102 /* Trace if needed. */
2105 const char **p_argv;
2108 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2109 fprintf (stderr, " %s", str);
2111 fprintf (stderr, "\n");
2117 /* Spawn child nm on pipe */
2120 fatal_perror (VFORK_STRING);
2122 if (pid == 0) /* child context */
2125 if (dup2 (pipe_fd[1], 1) < 0)
2126 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2128 if (close (pipe_fd[0]) < 0)
2129 fatal_perror ("close %d", pipe_fd[0]);
2131 if (close (pipe_fd[1]) < 0)
2132 fatal_perror ("close %d", pipe_fd[1]);
2134 execv (nm_file_name, real_nm_argv);
2135 fatal_perror ("execvp %s", nm_file_name);
2138 /* Parent context from here on. */
2139 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2141 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2144 if (close (pipe_fd[1]) < 0)
2145 fatal_perror ("close %d", pipe_fd[1]);
2148 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2150 /* Read each line of nm output. */
2151 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2156 /* If it contains a constructor or destructor name, add the name
2157 to the appropriate list. */
2159 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2160 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2167 /* Find the end of the symbol name.
2168 Do not include `|', because Encore nm can tack that on the end. */
2169 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2175 switch (is_ctor_dtor (name))
2178 if (which_pass != PASS_LIB)
2179 add_to_list (&constructors, name);
2183 if (which_pass != PASS_LIB)
2184 add_to_list (&destructors, name);
2188 if (which_pass != PASS_LIB)
2189 fatal ("init function found in object %s", prog_name);
2190 #ifndef LD_INIT_SWITCH
2191 add_to_list (&constructors, name);
2196 if (which_pass != PASS_LIB)
2197 fatal ("fini function found in object %s", prog_name);
2198 #ifndef LD_FINI_SWITCH
2199 add_to_list (&destructors, name);
2204 if (which_pass != PASS_LIB)
2205 add_to_list (&frame_tables, name);
2208 default: /* not a constructor or destructor */
2213 fprintf (stderr, "\t%s\n", buf);
2217 fprintf (stderr, "\n");
2219 if (fclose (inf) != 0)
2220 fatal_perror ("fclose");
2222 do_wait (nm_file_name);
2224 signal (SIGINT, int_handler);
2226 signal (SIGQUIT, quit_handler);
2230 #if SUNOS4_SHARED_LIBRARIES
2232 /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2233 that the output file depends upon and their initialization/finalization
2234 routines, if any. */
2239 #include <sys/mman.h>
2240 #include <sys/param.h>
2242 #include <sys/dir.h>
2244 /* pointers to the object file */
2245 unsigned object; /* address of memory mapped file */
2246 unsigned objsize; /* size of memory mapped to file */
2247 char * code; /* pointer to code segment */
2248 char * data; /* pointer to data segment */
2249 struct nlist *symtab; /* pointer to symbol table */
2250 struct link_dynamic *ld;
2251 struct link_dynamic_2 *ld_2;
2252 struct head libraries;
2254 /* Map the file indicated by NAME into memory and store its address. */
2256 static void mapfile PARAMS ((const char *));
2264 if ((fp = open (name, O_RDONLY)) == -1)
2265 fatal ("unable to open file '%s'", name);
2266 if (fstat (fp, &s) == -1)
2267 fatal ("unable to stat file '%s'", name);
2269 objsize = s.st_size;
2270 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2272 if (object == (unsigned)-1)
2273 fatal ("unable to mmap file '%s'", name);
2278 /* Helpers for locatelib. */
2280 static const char *libname;
2282 static int libselect PARAMS ((struct direct *));
2288 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2291 /* If one file has an additional numeric extension past LIBNAME, then put
2292 that one first in the sort. If both files have additional numeric
2293 extensions, then put the one with the higher number first in the sort.
2295 We must verify that the extension is numeric, because Sun saves the
2296 original versions of patched libraries with a .FCS extension. Files with
2297 invalid extensions must go last in the sort, so that they will not be used. */
2298 static int libcompare PARAMS ((struct direct **, struct direct **));
2302 struct direct **d1, **d2;
2304 int i1, i2 = strlen (libname);
2305 char *e1 = (*d1)->d_name + i2;
2306 char *e2 = (*d2)->d_name + i2;
2308 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2309 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2313 i1 = strtol (e1, &e1, 10);
2314 i2 = strtol (e2, &e2, 10);
2321 /* It has a valid numeric extension, prefer this one. */
2322 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2324 /* It has an invalid numeric extension, must prefer the other one. */
2330 /* It has a valid numeric extension, prefer this one. */
2331 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2333 /* It has an invalid numeric extension, must prefer the other one. */
2341 /* Given the name NAME of a dynamic dependency, find its pathname and add
2342 it to the list of libraries. */
2343 static void locatelib PARAMS ((const char *));
2349 static const char **l;
2351 char buf[MAXPATHLEN];
2359 /* counting elements in array, need 1 extra for null */
2361 ld_rules = (char *) (ld_2->ld_rules + code);
2365 for (; *ld_rules != 0; ld_rules++)
2366 if (*ld_rules == ':')
2368 ld_rules = (char *) (ld_2->ld_rules + code);
2369 ldr = xstrdup (ld_rules);
2371 p = getenv ("LD_LIBRARY_PATH");
2376 for (q = p ; *q != 0; q++)
2381 l = (const char **) xmalloc ((cnt + 3) * sizeof (char *));
2386 for (; *ldr != 0; ldr++)
2396 for (; *q != 0; q++)
2403 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2406 *pp++ = "/usr/local/lib";
2410 for (pp = l; *pp != 0 ; pp++)
2412 struct direct **namelist;
2414 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2416 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2417 add_to_list (&libraries, buf);
2419 fprintf (stderr, "%s\n", buf);
2426 notice ("not found\n");
2428 fatal ("dynamic dependency %s not found", name);
2432 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2433 that it depends upon and any constructors or destructors they contain. */
2436 scan_libraries (prog_name)
2437 const char *prog_name;
2439 struct exec *header;
2441 struct link_object *lo;
2442 char buff[MAXPATHLEN];
2445 mapfile (prog_name);
2446 header = (struct exec *)object;
2447 if (N_BADMAG (*header))
2448 fatal ("bad magic number in file '%s'", prog_name);
2449 if (header->a_dynamic == 0)
2452 code = (char *) (N_TXTOFF (*header) + (long) header);
2453 data = (char *) (N_DATOFF (*header) + (long) header);
2454 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2456 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2459 ld = (struct link_dynamic *) (symtab->n_value + code);
2465 ld = (struct link_dynamic *) data;
2470 notice ("dynamic dependencies.\n");
2472 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2473 for (lo = (struct link_object *) ld_2->ld_need; lo;
2474 lo = (struct link_object *) lo->lo_next)
2477 lo = (struct link_object *) ((long) lo + code);
2478 name = (char *) (code + lo->lo_name);
2482 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2483 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2489 fprintf (stderr, "\t%s\n", name);
2490 add_to_list (&libraries, name);
2495 fprintf (stderr, "\n");
2497 /* now iterate through the library list adding their symbols to
2499 for (list = libraries.first; list; list = list->next)
2500 scan_prog_file (list->name, PASS_LIB);
2503 #else /* SUNOS4_SHARED_LIBRARIES */
2506 /* Use the List Dynamic Dependencies program to find shared libraries that
2507 the output file depends upon and their initialization/finalization
2508 routines, if any. */
2511 scan_libraries (prog_name)
2512 const char *prog_name;
2514 static struct head libraries; /* list of shared libraries found */
2516 void (*int_handler) PARAMS ((int));
2517 void (*quit_handler) PARAMS ((int));
2518 char *real_ldd_argv[4];
2519 const char **ldd_argv = (const char **) real_ldd_argv;
2526 /* If we do not have an `ldd', complain. */
2527 if (ldd_file_name == 0)
2529 error ("cannot find `ldd'");
2533 ldd_argv[argc++] = ldd_file_name;
2534 ldd_argv[argc++] = prog_name;
2535 ldd_argv[argc++] = (char *) 0;
2537 if (pipe (pipe_fd) < 0)
2538 fatal_perror ("pipe");
2540 inf = fdopen (pipe_fd[0], "r");
2541 if (inf == (FILE *) 0)
2542 fatal_perror ("fdopen");
2544 /* Trace if needed. */
2547 const char **p_argv;
2550 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2551 fprintf (stderr, " %s", str);
2553 fprintf (stderr, "\n");
2559 /* Spawn child ldd on pipe */
2562 fatal_perror (VFORK_STRING);
2564 if (pid == 0) /* child context */
2567 if (dup2 (pipe_fd[1], 1) < 0)
2568 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2570 if (close (pipe_fd[0]) < 0)
2571 fatal_perror ("close %d", pipe_fd[0]);
2573 if (close (pipe_fd[1]) < 0)
2574 fatal_perror ("close %d", pipe_fd[1]);
2576 execv (ldd_file_name, real_ldd_argv);
2577 fatal_perror ("execv %s", ldd_file_name);
2580 /* Parent context from here on. */
2581 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2583 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2586 if (close (pipe_fd[1]) < 0)
2587 fatal_perror ("close %d", pipe_fd[1]);
2590 notice ("\nldd output with constructors/destructors.\n");
2592 /* Read each line of ldd output. */
2593 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2596 char *name, *end, *p = buf;
2598 /* Extract names of libraries and add to list. */
2599 PARSE_LDD_OUTPUT (p);
2604 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2605 fatal ("dynamic dependency %s not found", buf);
2607 /* Find the end of the symbol name. */
2609 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2614 if (access (name, R_OK) == 0)
2615 add_to_list (&libraries, name);
2617 fatal ("unable to open dynamic dependency '%s'", buf);
2620 fprintf (stderr, "\t%s\n", buf);
2623 fprintf (stderr, "\n");
2625 if (fclose (inf) != 0)
2626 fatal_perror ("fclose");
2628 do_wait (ldd_file_name);
2630 signal (SIGINT, int_handler);
2632 signal (SIGQUIT, quit_handler);
2635 /* now iterate through the library list adding their symbols to
2637 for (list = libraries.first; list; list = list->next)
2638 scan_prog_file (list->name, PASS_LIB);
2641 #endif /* LDD_SUFFIX */
2642 #endif /* SUNOS4_SHARED_LIBRARIES */
2644 #endif /* OBJECT_FORMAT_NONE */
2648 * COFF specific stuff.
2651 #ifdef OBJECT_FORMAT_COFF
2653 #if defined(EXTENDED_COFF)
2655 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2656 # define GCC_SYMENT SYMR
2657 # define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal)
2658 # define GCC_SYMINC(X) (1)
2659 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2660 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2664 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2665 # define GCC_SYMENT SYMENT
2666 # define GCC_OK_SYMBOL(X) \
2667 (((X).n_sclass == C_EXT) && \
2668 ((X).n_scnum > N_UNDEF) && \
2670 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
2671 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
2672 # define GCC_UNDEF_SYMBOL(X) \
2673 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
2674 # define GCC_SYMINC(X) ((X).n_numaux+1)
2675 # define GCC_SYMZERO(X) 0
2677 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */
2679 # define GCC_CHECK_HDR(X) \
2680 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2681 || (HEADER (X).f_magic == 0767 && aix64_flag))
2683 # define GCC_CHECK_HDR(X) \
2684 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2685 || (HEADER (X).f_magic == 0757 && aix64_flag))
2690 extern char *ldgetname ();
2692 /* COFF version to scan the name list of the loaded program for
2693 the symbols g++ uses for static constructors and destructors.
2695 The constructor table begins at __CTOR_LIST__ and contains a count
2696 of the number of pointers (or -1 if the constructors are built in a
2697 separate section by the linker), followed by the pointers to the
2698 constructor functions, terminated with a null pointer. The
2699 destructor table has the same format, and begins at __DTOR_LIST__. */
2702 scan_prog_file (prog_name, which_pass)
2703 const char *prog_name;
2704 enum pass which_pass;
2706 LDFILE *ldptr = NULL;
2707 int sym_index, sym_count;
2710 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
2713 #ifdef COLLECT_EXPORT_LIST
2714 /* We do not need scanning for some standard C libraries. */
2715 if (which_pass == PASS_FIRST && ignore_library (prog_name))
2718 /* On AIX we have a loop, because there is not much difference
2719 between an object and an archive. This trick allows us to
2720 eliminate scan_libraries() function. */
2724 /* Some platforms (e.g. OSF4) declare ldopen as taking a
2725 non-const char * filename parameter, even though it will not
2726 modify that string. So we must cast away const-ness here,
2727 which will cause -Wcast-qual to burp. */
2728 if ((ldptr = ldopen ((char *)prog_name, ldptr)) != NULL)
2730 if (! MY_ISCOFF (HEADER (ldptr).f_magic))
2731 fatal ("%s: not a COFF file", prog_name);
2733 if (GCC_CHECK_HDR (ldptr))
2735 sym_count = GCC_SYMBOLS (ldptr);
2736 sym_index = GCC_SYMZERO (ldptr);
2738 #ifdef COLLECT_EXPORT_LIST
2739 /* Is current archive member a shared object? */
2740 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2743 while (sym_index < sym_count)
2747 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2749 sym_index += GCC_SYMINC (symbol);
2751 if (GCC_OK_SYMBOL (symbol))
2755 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2756 continue; /* should never happen */
2758 #ifdef XCOFF_DEBUGGING_INFO
2759 /* All AIX function names have a duplicate entry
2760 beginning with a dot. */
2765 switch (is_ctor_dtor (name))
2769 add_to_list (&constructors, name);
2770 #ifdef COLLECT_EXPORT_LIST
2771 if (which_pass == PASS_OBJ)
2772 add_to_list (&exports, name);
2778 add_to_list (&destructors, name);
2779 #ifdef COLLECT_EXPORT_LIST
2780 if (which_pass == PASS_OBJ)
2781 add_to_list (&exports, name);
2785 #ifdef COLLECT_EXPORT_LIST
2787 #ifndef LD_INIT_SWITCH
2789 add_to_list (&constructors, name);
2794 #ifndef LD_INIT_SWITCH
2796 add_to_list (&destructors, name);
2803 add_to_list (&frame_tables, name);
2804 #ifdef COLLECT_EXPORT_LIST
2805 if (which_pass == PASS_OBJ)
2806 add_to_list (&exports, name);
2810 default: /* not a constructor or destructor */
2811 #ifdef COLLECT_EXPORT_LIST
2812 /* If we are building a shared object on AIX we need
2813 to explicitly export all global symbols. */
2816 if (which_pass == PASS_OBJ && (! export_flag))
2817 add_to_list (&exports, name);
2824 #if !defined(EXTENDED_COFF)
2825 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2826 symbol.n_scnum, symbol.n_sclass,
2827 (symbol.n_type ? "0" : ""), symbol.n_type,
2831 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
2832 symbol.iss, (long) symbol.value, symbol.index, name);
2837 #ifdef COLLECT_EXPORT_LIST
2840 /* If archive contains both 32-bit and 64-bit objects,
2841 we want to skip objects in other mode so mismatch normal. */
2843 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
2844 prog_name, HEADER (ldptr).f_magic, aix64_flag);
2850 fatal ("%s: cannot open as COFF file", prog_name);
2852 #ifdef COLLECT_EXPORT_LIST
2853 /* On AIX loop continues while there are more members in archive. */
2855 while (ldclose (ldptr) == FAILURE);
2857 /* Otherwise we simply close ldptr. */
2858 (void) ldclose(ldptr);
2863 #ifdef COLLECT_EXPORT_LIST
2864 /* Given a library name without "lib" prefix, this function
2865 returns a full library name including a path. */
2867 resolve_lib_name (name)
2873 for (i = 0; libpaths[i]; i++)
2874 if (libpaths[i]->max_len > l)
2875 l = libpaths[i]->max_len;
2877 lib_buf = xmalloc (l + strlen(name) + 10);
2879 for (i = 0; libpaths[i]; i++)
2881 struct prefix_list *list = libpaths[i]->plist;
2882 for (; list; list = list->next)
2884 /* The following lines are needed because path_prefix list
2885 may contain directories both with trailing '/' and
2888 if (list->prefix[strlen(list->prefix)-1] != '/')
2890 for (j = 0; libexts[j]; j++)
2892 sprintf (lib_buf, "%s%slib%s.%s",
2893 list->prefix, p, name, libexts[j]);
2894 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
2895 if (file_exists (lib_buf))
2897 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
2904 fprintf (stderr, "not found\n");
2906 fatal ("Library lib%s not found", name);
2910 /* Array of standard AIX libraries which should not
2911 be scanned for ctors/dtors. */
2912 static const char *const aix_std_libs[] = {
2920 "/usr/lib/libc_r.a",
2921 "/usr/lib/libm_r.a",
2922 "/usr/lib/threads/libc.a",
2923 "/usr/ccs/lib/libc.a",
2924 "/usr/ccs/lib/libm.a",
2925 "/usr/ccs/lib/libc_r.a",
2926 "/usr/ccs/lib/libm_r.a",
2930 /* This function checks the filename and returns 1
2931 if this name matches the location of a standard AIX library. */
2933 ignore_library (name)
2936 const char *const *p = &aix_std_libs[0];
2937 while (*p++ != NULL)
2938 if (! strcmp (name, *p)) return 1;
2943 #endif /* OBJECT_FORMAT_COFF */
2947 * OSF/rose specific stuff.
2950 #ifdef OBJECT_FORMAT_ROSE
2952 /* Union of the various load commands */
2954 typedef union load_union
2956 ldc_header_t hdr; /* common header */
2957 load_cmd_map_command_t map; /* map indexing other load cmds */
2958 interpreter_command_t iprtr; /* interpreter pathname */
2959 strings_command_t str; /* load commands strings section */
2960 region_command_t region; /* region load command */
2961 reloc_command_t reloc; /* relocation section */
2962 package_command_t pkg; /* package load command */
2963 symbols_command_t sym; /* symbol sections */
2964 entry_command_t ent; /* program start section */
2965 gen_info_command_t info; /* object information */
2966 func_table_command_t func; /* function constructors/destructors */
2969 /* Structure to point to load command and data section in memory. */
2971 typedef struct load_all
2973 load_union_t *load; /* load command */
2974 char *section; /* pointer to section */
2977 /* Structure to contain information about a file mapped into memory. */
2981 char *start; /* start of map */
2982 char *name; /* filename */
2983 long size; /* size of the file */
2984 long rounded_size; /* size rounded to page boundary */
2985 int fd; /* file descriptor */
2986 int rw; /* != 0 if opened read/write */
2987 int use_mmap; /* != 0 if mmap'ed */
2990 extern int decode_mach_o_hdr ();
2991 extern int encode_mach_o_hdr ();
2993 static void add_func_table PARAMS ((mo_header_t *, load_all_t *,
2994 symbol_info_t *, int));
2995 static void print_header PARAMS ((mo_header_t *));
2996 static void print_load_command PARAMS ((load_union_t *, size_t, int));
2997 static void bad_header PARAMS ((int));
2998 static struct file_info *read_file PARAMS ((const char *, int, int));
2999 static void end_file PARAMS ((struct file_info *));
3001 /* OSF/rose specific version to scan the name list of the loaded
3002 program for the symbols g++ uses for static constructors and
3005 The constructor table begins at __CTOR_LIST__ and contains a count
3006 of the number of pointers (or -1 if the constructors are built in a
3007 separate section by the linker), followed by the pointers to the
3008 constructor functions, terminated with a null pointer. The
3009 destructor table has the same format, and begins at __DTOR_LIST__. */
3012 scan_prog_file (prog_name, which_pass)
3013 const char *prog_name;
3014 enum pass which_pass;
3018 load_all_t *load_array;
3019 load_all_t *load_end;
3020 load_all_t *load_cmd;
3021 int symbol_load_cmds;
3027 struct file_info *obj_file;
3029 mo_lcid_t cmd_strings = -1;
3030 symbol_info_t *main_sym = 0;
3031 int rw = (which_pass != PASS_FIRST);
3033 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3035 fatal_perror ("open %s", prog_name);
3037 obj_file = read_file (prog_name, prog_fd, rw);
3038 obj = obj_file->start;
3040 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3041 if (status != MO_HDR_CONV_SUCCESS)
3042 bad_header (status);
3045 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3046 since the hardware will automatically swap bytes for us on loading little endian
3049 #ifndef CROSS_COMPILE
3050 if (hdr.moh_magic != MOH_MAGIC_MSB
3051 || hdr.moh_header_version != MOH_HEADER_VERSION
3052 || hdr.moh_byte_order != OUR_BYTE_ORDER
3053 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3054 || hdr.moh_cpu_type != OUR_CPU_TYPE
3055 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3056 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3058 fatal ("incompatibilities between object file & expected values");
3063 print_header (&hdr);
3065 offset = hdr.moh_first_cmd_off;
3066 load_end = load_array
3067 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3069 /* Build array of load commands, calculating the offsets */
3070 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3072 load_union_t *load_hdr; /* load command header */
3074 load_cmd = load_end++;
3075 load_hdr = (load_union_t *) (obj + offset);
3077 /* If modifying the program file, copy the header. */
3080 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3081 memcpy ((char *)ptr, (char *)load_hdr, load_hdr->hdr.ldci_cmd_size);
3084 /* null out old command map, because we will rewrite at the end. */
3085 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3087 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3088 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3092 load_cmd->load = load_hdr;
3093 if (load_hdr->hdr.ldci_section_off > 0)
3094 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3097 print_load_command (load_hdr, offset, i);
3099 offset += load_hdr->hdr.ldci_cmd_size;
3102 /* If the last command is the load command map and is not undefined,
3103 decrement the count of load commands. */
3104 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3107 hdr.moh_n_load_cmds--;
3110 /* Go through and process each symbol table section. */
3111 symbol_load_cmds = 0;
3112 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3114 load_union_t *load_hdr = load_cmd->load;
3116 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3122 const char *kind = "unknown";
3124 switch (load_hdr->sym.symc_kind)
3126 case SYMC_IMPORTS: kind = "imports"; break;
3127 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3128 case SYMC_STABS: kind = "stabs"; break;
3131 notice ("\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3132 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3135 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3138 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3139 if (str_sect == (char *) 0)
3140 fatal ("string section missing");
3142 if (load_cmd->section == (char *) 0)
3143 fatal ("section pointer missing");
3145 num_syms = load_hdr->sym.symc_nentries;
3146 for (i = 0; i < num_syms; i++)
3148 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3149 char *name = sym->si_name.symbol_name + str_sect;
3156 char *n = name + strlen (name) - strlen (NAME__MAIN);
3158 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3168 switch (is_ctor_dtor (name))
3171 add_to_list (&constructors, name);
3175 add_to_list (&destructors, name);
3178 default: /* not a constructor or destructor */
3184 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3185 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3190 if (symbol_load_cmds == 0)
3191 fatal ("no symbol table found");
3193 /* Update the program file now, rewrite header and load commands. At present,
3194 we assume that there is enough space after the last load command to insert
3195 one more. Since the first section written out is page aligned, and the
3196 number of load commands is small, this is ok for the present. */
3200 load_union_t *load_map;
3203 if (cmd_strings == -1)
3204 fatal ("no cmd_strings found");
3206 /* Add __main to initializer list.
3207 If we are building a program instead of a shared library, do not
3208 do anything, since in the current version, you cannot do mallocs
3209 and such in the constructors. */
3211 if (main_sym != (symbol_info_t *) 0
3212 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3213 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3216 notice ("\nUpdating header and load commands.\n\n");
3218 hdr.moh_n_load_cmds++;
3219 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3221 /* Create new load command map. */
3223 notice ("load command map, %d cmds, new size %ld.\n",
3224 (int) hdr.moh_n_load_cmds, (long) size);
3226 load_map = (load_union_t *) xcalloc (1, size);
3227 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3228 load_map->map.ldc_header.ldci_cmd_size = size;
3229 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3230 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3231 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3233 offset = hdr.moh_first_cmd_off;
3234 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3236 load_map->map.lcm_map[i] = offset;
3237 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3238 hdr.moh_load_map_cmd_off = offset;
3240 offset += load_array[i].load->hdr.ldci_cmd_size;
3243 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3246 print_header (&hdr);
3249 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3250 if (status != MO_HDR_CONV_SUCCESS)
3251 bad_header (status);
3254 notice ("writing load commands.\n\n");
3256 /* Write load commands */
3257 offset = hdr.moh_first_cmd_off;
3258 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3260 load_union_t *load_hdr = load_array[i].load;
3261 size_t size = load_hdr->hdr.ldci_cmd_size;
3264 print_load_command (load_hdr, offset, i);
3266 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3271 end_file (obj_file);
3273 if (close (prog_fd))
3274 fatal_perror ("close %s", prog_name);
3277 fprintf (stderr, "\n");
3281 /* Add a function table to the load commands to call a function
3282 on initiation or termination of the process. */
3285 add_func_table (hdr_p, load_array, sym, type)
3286 mo_header_t *hdr_p; /* pointer to global header */
3287 load_all_t *load_array; /* array of ptrs to load cmds */
3288 symbol_info_t *sym; /* pointer to symbol entry */
3289 int type; /* fntc_type value */
3291 /* Add a new load command. */
3292 int num_cmds = ++hdr_p->moh_n_load_cmds;
3293 int load_index = num_cmds - 1;
3294 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3295 load_union_t *ptr = xcalloc (1, size);
3296 load_all_t *load_cmd;
3299 /* Set the unresolved address bit in the header to force the loader to be
3300 used, since kernel exec does not call the initialization functions. */
3301 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3303 load_cmd = &load_array[load_index];
3304 load_cmd->load = ptr;
3305 load_cmd->section = (char *) 0;
3307 /* Fill in func table load command. */
3308 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3309 ptr->func.ldc_header.ldci_cmd_size = size;
3310 ptr->func.ldc_header.ldci_section_off = 0;
3311 ptr->func.ldc_header.ldci_section_len = 0;
3312 ptr->func.fntc_type = type;
3313 ptr->func.fntc_nentries = 1;
3315 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3316 /* Is the symbol already expressed as (region, offset)? */
3317 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3319 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3320 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3323 /* If not, figure out which region it's in. */
3326 mo_vm_addr_t addr = sym->si_value.abs_val;
3329 for (i = 0; i < load_index; i++)
3331 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3333 region_command_t *region_ptr = &load_array[i].load->region;
3335 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3336 && addr >= region_ptr->regc_addr.vm_addr
3337 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3339 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3340 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3348 fatal ("could not convert 0x%l.8x into a region", addr);
3352 notice ("%s function, region %d, offset = %ld (0x%.8lx)\n",
3353 type == FNTC_INITIALIZATION ? "init" : "term",
3354 (int) ptr->func.fntc_entry_loc[i].adr_lcid,
3355 (long) ptr->func.fntc_entry_loc[i].adr_sctoff,
3356 (long) ptr->func.fntc_entry_loc[i].adr_sctoff);
3361 /* Print the global header for an OSF/rose object. */
3364 print_header (hdr_ptr)
3365 mo_header_t *hdr_ptr;
3367 fprintf (stderr, "\nglobal header:\n");
3368 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3369 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3370 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3371 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3372 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3373 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3374 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3375 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3376 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3377 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3378 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3379 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3380 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3381 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3382 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3384 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3385 fprintf (stderr, ", relocatable");
3387 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3388 fprintf (stderr, ", linkable");
3390 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3391 fprintf (stderr, ", execable");
3393 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3394 fprintf (stderr, ", executable");
3396 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3397 fprintf (stderr, ", unresolved");
3399 fprintf (stderr, "\n\n");
3404 /* Print a short summary of a load command. */
3407 print_load_command (load_hdr, offset, number)
3408 load_union_t *load_hdr;
3412 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3413 const char *type_str = (char *) 0;
3417 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3418 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3419 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3420 case LDC_STRINGS: type_str = "STRINGS"; break;
3421 case LDC_REGION: type_str = "REGION"; break;
3422 case LDC_RELOC: type_str = "RELOC"; break;
3423 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3424 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3425 case LDC_ENTRY: type_str = "ENTRY"; break;
3426 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3427 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3431 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3433 (long) load_hdr->hdr.ldci_cmd_size,
3435 (long) load_hdr->hdr.ldci_section_off,
3436 (long) load_hdr->hdr.ldci_section_len);
3438 if (type_str == (char *) 0)
3439 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3441 else if (type != LDC_REGION)
3442 fprintf (stderr, ", ty: %s\n", type_str);
3446 const char *region = "";
3447 switch (load_hdr->region.regc_usage_type)
3449 case REG_TEXT_T: region = ", .text"; break;
3450 case REG_DATA_T: region = ", .data"; break;
3451 case REG_BSS_T: region = ", .bss"; break;
3452 case REG_GLUE_T: region = ", .glue"; break;
3453 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3454 case REG_RDATA_T: region = ", .rdata"; break;
3455 case REG_SDATA_T: region = ", .sdata"; break;
3456 case REG_SBSS_T: region = ", .sbss"; break;
3460 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3462 (long) load_hdr->region.regc_vm_addr,
3463 (long) load_hdr->region.regc_vm_size,
3471 /* Fatal error when {en,de}code_mach_o_header fails. */
3479 case MO_ERROR_BAD_MAGIC: fatal ("bad magic number");
3480 case MO_ERROR_BAD_HDR_VERS: fatal ("bad header version");
3481 case MO_ERROR_BAD_RAW_HDR_VERS: fatal ("bad raw header version");
3482 case MO_ERROR_BUF2SML: fatal ("raw header buffer too small");
3483 case MO_ERROR_OLD_RAW_HDR_FILE: fatal ("old raw header file");
3484 case MO_ERROR_UNSUPPORTED_VERS: fatal ("unsupported version");
3486 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3491 /* Read a file into a memory buffer. */
3493 static struct file_info *
3494 read_file (name, fd, rw)
3495 const char *name; /* filename */
3496 int fd; /* file descriptor */
3497 int rw; /* read/write */
3499 struct stat stat_pkt;
3500 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3502 static int page_size;
3505 if (fstat (fd, &stat_pkt) < 0)
3506 fatal_perror ("fstat %s", name);
3509 p->size = stat_pkt.st_size;
3510 p->rounded_size = stat_pkt.st_size;
3516 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3519 page_size = sysconf (_SC_PAGE_SIZE);
3521 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3522 p->start = mmap ((caddr_t) 0,
3523 (rw) ? p->rounded_size : p->size,
3524 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3525 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3529 if (p->start != (char *) 0 && p->start != (char *) -1)
3533 #endif /* USE_MMAP */
3538 fprintf (stderr, "read %s\n", name);
3541 p->start = xmalloc (p->size);
3542 if (lseek (fd, 0L, SEEK_SET) < 0)
3543 fatal_perror ("lseek %s 0", name);
3545 len = read (fd, p->start, p->size);
3547 fatal_perror ("read %s", name);
3550 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3556 /* Do anything necessary to write a file back from memory. */
3560 struct file_info *ptr; /* file information block */
3568 fprintf (stderr, "msync %s\n", ptr->name);
3570 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3571 fatal_perror ("msync %s", ptr->name);
3575 fprintf (stderr, "munmap %s\n", ptr->name);
3577 if (munmap (ptr->start, ptr->size))
3578 fatal_perror ("munmap %s", ptr->name);
3581 #endif /* USE_MMAP */
3588 fprintf (stderr, "write %s\n", ptr->name);
3590 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3591 fatal_perror ("lseek %s 0", ptr->name);
3593 len = write (ptr->fd, ptr->start, ptr->size);
3595 fatal_perror ("write %s", ptr->name);
3597 if (len != ptr->size)
3598 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3607 #endif /* OBJECT_FORMAT_ROSE */