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 extensions */
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
304 static int is_in_list PARAMS ((const char *, struct id *));
306 static void write_aix_file PARAMS ((FILE *, struct id *));
307 static char *resolve_lib_name PARAMS ((const char *));
308 static int ignore_library PARAMS ((const char *));
310 static char *extract_string PARAMS ((const char **));
325 while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
328 close (fdtmp[--fdx]);
334 /* Delete tempfiles and exit function. */
337 collect_exit (status)
340 if (c_file != 0 && c_file[0])
341 maybe_unlink (c_file);
343 if (o_file != 0 && o_file[0])
344 maybe_unlink (o_file);
346 #ifdef COLLECT_EXPORT_LIST
347 if (export_file != 0 && export_file[0])
348 maybe_unlink (export_file);
351 if (ldout != 0 && ldout[0])
354 maybe_unlink (ldout);
357 if (status != 0 && output_file != 0 && output_file[0])
358 maybe_unlink (output_file);
364 /* Notify user of a non-error. */
366 notice VPARAMS ((const char *msgid, ...))
369 VA_FIXEDARG (ap, const char *, msgid);
371 vfprintf (stderr, _(msgid), ap);
375 /* Die when sys call fails. */
378 fatal_perror VPARAMS ((const char * msgid, ...))
383 VA_FIXEDARG (ap, const char *, msgid);
385 fprintf (stderr, "collect2: ");
386 vfprintf (stderr, _(msgid), ap);
387 fprintf (stderr, ": %s\n", xstrerror (e));
390 collect_exit (FATAL_EXIT_CODE);
396 fatal VPARAMS ((const char * msgid, ...))
399 VA_FIXEDARG (ap, const char *, msgid);
401 fprintf (stderr, "collect2: ");
402 vfprintf (stderr, _(msgid), ap);
403 fprintf (stderr, "\n");
406 collect_exit (FATAL_EXIT_CODE);
409 /* Write error message. */
412 error VPARAMS ((const char * msgid, ...))
415 VA_FIXEDARG (ap, const char *, msgid);
417 fprintf (stderr, "collect2: ");
418 vfprintf (stderr, _(msgid), ap);
419 fprintf (stderr, "\n");
423 /* In case obstack is linked in, and abort is defined to fancy_abort,
424 provide a default entry. */
429 fatal ("internal error");
436 if (c_file != 0 && c_file[0])
437 maybe_unlink (c_file);
439 if (o_file != 0 && o_file[0])
440 maybe_unlink (o_file);
442 if (ldout != 0 && ldout[0])
443 maybe_unlink (ldout);
445 #ifdef COLLECT_EXPORT_LIST
446 if (export_file != 0 && export_file[0])
447 maybe_unlink (export_file);
450 signal (signo, SIG_DFL);
451 kill (getpid (), signo);
459 return access (name, R_OK) == 0;
462 /* Parse a reasonable subset of shell quoting syntax. */
479 obstack_1grow (&temporary_obstack, c);
480 else if (! inside && c == ' ')
482 else if (! inside && c == '\\')
487 obstack_1grow (&temporary_obstack, c);
490 obstack_1grow (&temporary_obstack, '\0');
492 return obstack_finish (&temporary_obstack);
499 FILE *stream = fopen (name, "r");
506 while (c = getc (stream),
507 c != EOF && (ISIDNUM (c) || c == '$' || c == '.'))
508 obstack_1grow (&temporary_obstack, c);
509 if (obstack_object_size (&temporary_obstack) > 0)
511 const char *word, *p;
513 obstack_1grow (&temporary_obstack, '\0');
514 word = obstack_finish (&temporary_obstack);
517 ++word, putc ('.', stderr);
519 if (*p == '_' && prepends_underscore)
525 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
530 fputs (result, stderr);
532 diff = strlen (word) - strlen (result);
533 while (diff > 0 && c == ' ')
534 --diff, putc (' ', stderr);
535 while (diff < 0 && c == ' ')
536 ++diff, c = getc (stream);
541 fputs (word, stderr);
544 obstack_free (&temporary_obstack, temporary_firstobj);
553 /* Decide whether the given symbol is: a constructor (1), a destructor
554 (2), a routine in a shared object that calls all the constructors
555 (3) or destructors (4), a DWARF exception-handling table (5), or
556 nothing special (0). */
562 struct names { const char *const name; const int len; const int ret;
563 const int two_underscores; };
567 const char *orig_s = s;
569 static struct names special[] = {
570 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
571 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
572 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
573 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
574 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
575 #ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
576 cfront has its own linker procedure to collect them;
577 if collect2 gets them too, they get collected twice
578 when the cfront procedure is run and the compiler used
579 for linking happens to be GCC. */
580 { "sti__", sizeof ("sti__")-1, 1, 1 },
581 { "std__", sizeof ("std__")-1, 2, 1 },
582 #endif /* CFRONT_LOSSAGE */
586 while ((ch = *s) == '_')
592 for (p = &special[0]; p->len > 0; p++)
595 && (!p->two_underscores || ((s - orig_s) >= 2))
596 && strncmp(s, p->name, p->len) == 0)
604 /* We maintain two prefix lists: one from COMPILER_PATH environment variable
605 and one from the PATH variable. */
607 static struct path_prefix cpath, path;
610 /* This is the name of the target machine. We use it to form the name
611 of the files to execute. */
613 static const char *const target_machine = TARGET_MACHINE;
616 /* Search for NAME using prefix list PPREFIX. We only look for executable
619 Return 0 if not found, otherwise return its name, allocated with malloc. */
622 find_a_file (pprefix, name)
623 struct path_prefix *pprefix;
627 struct prefix_list *pl;
628 int len = pprefix->max_len + strlen (name) + 1;
631 fprintf (stderr, "Looking for '%s'\n", name);
633 #ifdef HOST_EXECUTABLE_SUFFIX
634 len += strlen (HOST_EXECUTABLE_SUFFIX);
637 temp = xmalloc (len);
639 /* Determine the filename to execute (special case for absolute paths). */
642 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
643 || (*name && name[1] == ':')
647 if (access (name, X_OK) == 0)
652 fprintf (stderr, " - found: absolute path\n");
657 #ifdef HOST_EXECUTABLE_SUFFIX
658 /* Some systems have a suffix for executable files.
659 So try appending that. */
661 strcat (temp, HOST_EXECUTABLE_SUFFIX);
663 if (access (temp, X_OK) == 0)
668 fprintf (stderr, " - failed to locate using absolute path\n");
671 for (pl = pprefix->plist; pl; pl = pl->next)
675 strcpy (temp, pl->prefix);
678 if (stat (temp, &st) >= 0
679 && ! S_ISDIR (st.st_mode)
680 && access (temp, X_OK) == 0)
683 #ifdef HOST_EXECUTABLE_SUFFIX
684 /* Some systems have a suffix for executable files.
685 So try appending that. */
686 strcat (temp, HOST_EXECUTABLE_SUFFIX);
688 if (stat (temp, &st) >= 0
689 && ! S_ISDIR (st.st_mode)
690 && access (temp, X_OK) == 0)
695 if (debug && pprefix->plist == NULL)
696 fprintf (stderr, " - failed: no entries in prefix list\n");
702 /* Add an entry for PREFIX to prefix list PPREFIX. */
705 add_prefix (pprefix, prefix)
706 struct path_prefix *pprefix;
709 struct prefix_list *pl, **prev;
714 for (pl = pprefix->plist; pl->next; pl = pl->next)
719 prev = &pprefix->plist;
721 /* Keep track of the longest prefix */
723 len = strlen (prefix);
724 if (len > pprefix->max_len)
725 pprefix->max_len = len;
727 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
728 pl->prefix = xstrdup (prefix);
733 pl->next = (struct prefix_list *) 0;
737 /* Take the value of the environment variable ENV, break it into a path, and
738 add of the entries to PPREFIX. */
741 prefix_from_env (env, pprefix)
743 struct path_prefix *pprefix;
746 GET_ENV_PATH_LIST (p, env);
749 prefix_from_string (p, pprefix);
753 prefix_from_string (p, pprefix)
755 struct path_prefix *pprefix;
757 const char *startp, *endp;
758 char *nstore = (char *) xmalloc (strlen (p) + 3);
761 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
766 if (*endp == PATH_SEPARATOR || *endp == 0)
768 strncpy (nstore, startp, endp-startp);
771 strcpy (nstore, "./");
773 else if (! IS_DIR_SEPARATOR (endp[-1]))
775 nstore[endp-startp] = DIR_SEPARATOR;
776 nstore[endp-startp+1] = 0;
779 nstore[endp-startp] = 0;
782 fprintf (stderr, " - add prefix: %s\n", nstore);
784 add_prefix (pprefix, nstore);
787 endp = startp = endp + 1;
796 int main PARAMS ((int, char *[]));
802 static const char *const ld_suffix = "ld";
803 static const char *const real_ld_suffix = "real-ld";
804 static const char *const collect_ld_suffix = "collect-ld";
805 static const char *const nm_suffix = "nm";
806 static const char *const gnm_suffix = "gnm";
808 static const char *const ldd_suffix = LDD_SUFFIX;
810 static const char *const strip_suffix = "strip";
811 static const char *const gstrip_suffix = "gstrip";
814 /* If we look for a program in the compiler directories, we just use
815 the short name, since these directories are already system-specific.
816 But it we look for a program in the system directories, we need to
817 qualify the program name with the target machine. */
819 const char *const full_ld_suffix =
820 concat(target_machine, "-", ld_suffix, NULL);
821 const char *const full_nm_suffix =
822 concat (target_machine, "-", nm_suffix, NULL);
823 const char *const full_gnm_suffix =
824 concat (target_machine, "-", gnm_suffix, NULL);
826 const char *const full_ldd_suffix =
827 concat (target_machine, "-", ldd_suffix, NULL);
829 const char *const full_strip_suffix =
830 concat (target_machine, "-", strip_suffix, NULL);
831 const char *const full_gstrip_suffix =
832 concat (target_machine, "-", gstrip_suffix, NULL);
834 const char *const full_ld_suffix = ld_suffix;
835 const char *const full_nm_suffix = nm_suffix;
836 const char *const full_gnm_suffix = gnm_suffix;
838 const char *const full_ldd_suffix = ldd_suffix;
840 const char *const full_strip_suffix = strip_suffix;
841 const char *const full_gstrip_suffix = gstrip_suffix;
842 #endif /* CROSS_COMPILE */
846 #ifdef COLLECT_EXPORT_LIST
849 const char *ld_file_name;
860 int num_c_args = argc+9;
862 no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
864 /* Suppress demangling by the real linker, which may be broken. */
865 putenv (xstrdup ("COLLECT_NO_DEMANGLE="));
867 #if defined (COLLECT2_HOST_INITIALIZATION)
868 /* Perform system dependent initialization, if necessary. */
869 COLLECT2_HOST_INITIALIZATION;
873 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
874 receive the signal. A different setting is inheritable */
875 signal (SIGCHLD, SIG_DFL);
880 /* Do not invoke xcalloc before this point, since locale needs to be
881 set first, in case a diagnostic is issued. */
883 ld1 = (const char **)(ld1_argv = (char **) xcalloc(sizeof (char *), argc+3));
884 ld2 = (const char **)(ld2_argv = (char **) xcalloc(sizeof (char *), argc+10));
885 object = (const char **)(object_lst = (char **) xcalloc(sizeof (char *), argc));
891 /* Parse command line early for instances of -debug. This allows
892 the debug flag to be set before functions like find_a_file()
897 for (i = 1; argv[i] != NULL; i ++)
898 if (! strcmp (argv[i], "-debug"))
903 #ifndef DEFAULT_A_OUT_NAME
904 output_file = "a.out";
906 output_file = DEFAULT_A_OUT_NAME;
909 obstack_begin (&temporary_obstack, 0);
910 obstack_begin (&permanent_obstack, 0);
911 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
913 current_demangling_style = auto_demangling;
914 p = getenv ("COLLECT_GCC_OPTIONS");
917 const char *q = extract_string (&p);
918 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
921 obstack_free (&temporary_obstack, temporary_firstobj);
923 /* -fno-exceptions -w */
926 c_ptr = (const char **)
927 (c_argv = (char **) xcalloc (sizeof (char *), num_c_args));
930 fatal ("no arguments");
933 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
934 signal (SIGQUIT, handler);
936 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
937 signal (SIGINT, handler);
939 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
940 signal (SIGALRM, handler);
943 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
944 signal (SIGHUP, handler);
946 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
947 signal (SIGSEGV, handler);
949 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
950 signal (SIGBUS, handler);
953 /* Extract COMPILER_PATH and PATH into our prefix list. */
954 prefix_from_env ("COMPILER_PATH", &cpath);
955 prefix_from_env ("PATH", &path);
957 /* Try to discover a valid linker/nm/strip to use. */
959 /* Maybe we know the right file to use (if not cross). */
961 #ifdef DEFAULT_LINKER
962 if (access (DEFAULT_LINKER, X_OK) == 0)
963 ld_file_name = DEFAULT_LINKER;
964 if (ld_file_name == 0)
966 #ifdef REAL_LD_FILE_NAME
967 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
968 if (ld_file_name == 0)
970 /* Search the (target-specific) compiler dirs for ld'. */
971 ld_file_name = find_a_file (&cpath, real_ld_suffix);
972 /* Likewise for `collect-ld'. */
973 if (ld_file_name == 0)
974 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
975 /* Search the compiler directories for `ld'. We have protection against
976 recursive calls in find_a_file. */
977 if (ld_file_name == 0)
978 ld_file_name = find_a_file (&cpath, ld_suffix);
979 /* Search the ordinary system bin directories
980 for `ld' (if native linking) or `TARGET-ld' (if cross). */
981 if (ld_file_name == 0)
982 ld_file_name = find_a_file (&path, full_ld_suffix);
984 #ifdef REAL_NM_FILE_NAME
985 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
986 if (nm_file_name == 0)
988 nm_file_name = find_a_file (&cpath, gnm_suffix);
989 if (nm_file_name == 0)
990 nm_file_name = find_a_file (&path, full_gnm_suffix);
991 if (nm_file_name == 0)
992 nm_file_name = find_a_file (&cpath, nm_suffix);
993 if (nm_file_name == 0)
994 nm_file_name = find_a_file (&path, full_nm_suffix);
997 ldd_file_name = find_a_file (&cpath, ldd_suffix);
998 if (ldd_file_name == 0)
999 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1002 #ifdef REAL_STRIP_FILE_NAME
1003 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1004 if (strip_file_name == 0)
1006 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1007 if (strip_file_name == 0)
1008 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1009 if (strip_file_name == 0)
1010 strip_file_name = find_a_file (&cpath, strip_suffix);
1011 if (strip_file_name == 0)
1012 strip_file_name = find_a_file (&path, full_strip_suffix);
1014 /* Determine the full path name of the C compiler to use. */
1015 c_file_name = getenv ("COLLECT_GCC");
1016 if (c_file_name == 0)
1018 #ifdef CROSS_COMPILE
1019 c_file_name = concat (target_machine, "-gcc", NULL);
1021 c_file_name = "gcc";
1025 p = find_a_file (&cpath, c_file_name);
1027 /* Here it should be safe to use the system search path since we should have
1028 already qualified the name of the compiler when it is needed. */
1030 p = find_a_file (&path, c_file_name);
1035 *ld1++ = *ld2++ = ld_file_name;
1037 /* Make temp file names. */
1038 c_file = make_temp_file (".c");
1039 o_file = make_temp_file (".o");
1040 #ifdef COLLECT_EXPORT_LIST
1041 export_file = make_temp_file (".x");
1043 ldout = make_temp_file (".ld");
1044 *c_ptr++ = c_file_name;
1051 #ifdef COLLECT_EXPORT_LIST
1052 /* Generate a list of directories from LIBPATH. */
1053 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1054 /* Add to this list also two standard directories where
1055 AIX loader always searches for libraries. */
1056 add_prefix (&libpath_lib_dirs, "/lib");
1057 add_prefix (&libpath_lib_dirs, "/usr/lib");
1060 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1062 AIX support needs to know if -shared has been specified before
1063 parsing commandline arguments. */
1065 p = getenv ("COLLECT_GCC_OPTIONS");
1068 const char *q = extract_string (&p);
1069 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1070 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1071 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
1072 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1073 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1075 if (*q == '-' && q[1] == 'B')
1077 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1080 q = extract_string (&p);
1081 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1085 obstack_free (&temporary_obstack, temporary_firstobj);
1086 *c_ptr++ = "-fno-exceptions";
1089 /* !!! When GCC calls collect2,
1090 it does not know whether it is calling collect2 or ld.
1091 So collect2 cannot meaningfully understand any options
1092 except those ld understands.
1093 If you propose to make GCC pass some other option,
1094 just imagine what will happen if ld is really ld!!! */
1096 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1097 /* After the first file, put in the c++ rt0. */
1100 while ((arg = *++argv) != (char *) 0)
1102 *ld1++ = *ld2++ = arg;
1108 #ifdef COLLECT_EXPORT_LIST
1109 /* We want to disable automatic exports on AIX when user
1110 explicitly puts an export list in command line */
1112 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1114 else if (arg[2] == '6' && arg[3] == '4')
1120 if (!strcmp (arg, "-debug"))
1122 /* Already parsed. */
1131 /* place o_file BEFORE this argument! */
1137 #ifdef COLLECT_EXPORT_LIST
1139 /* Resolving full library name. */
1140 const char *s = resolve_lib_name (arg+2);
1142 /* Saving a full library name. */
1143 add_to_list (&libs, s);
1148 #ifdef COLLECT_EXPORT_LIST
1149 /* Saving directories where to search for libraries. */
1151 add_prefix (&cmdline_lib_dirs, arg+2);
1154 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
1156 if (is_in_args (arg, (const char **) ld1_argv, ld1-1))
1159 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
1164 output_file = *ld1++ = *ld2++ = *++argv;
1166 #ifdef SWITCHES_NEED_SPACES
1167 && ! strchr (SWITCHES_NEED_SPACES, arg[1])
1171 output_file = &arg[2];
1180 if (arg[2] == '\0' && do_collecting)
1182 /* We must strip after the nm run, otherwise C++ linking
1183 will not work. Thus we strip in the second ld run, or
1184 else with strip if there is no second ld run. */
1196 else if ((p = strrchr (arg, '.')) != (char *) 0
1197 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1198 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0
1199 || strcmp (p, ".obj") == 0))
1208 /* place o_file BEFORE this argument! */
1214 if (p[1] == 'o' || p[1] == 'l')
1216 #ifdef COLLECT_EXPORT_LIST
1217 /* libraries can be specified directly, i.e. without -l flag. */
1220 /* Saving a full library name. */
1221 add_to_list (&libs, arg);
1227 #ifdef COLLECT_EXPORT_LIST
1228 /* This is added only for debugging purposes. */
1231 fprintf (stderr, "List of libraries:\n");
1232 dump_list (stderr, "\t", libs.first);
1235 /* The AIX linker will discard static constructors in object files if
1236 nothing else in the file is referenced, so look at them first. */
1238 const char **export_object_lst = (const char **)object_lst;
1240 while (export_object_lst < object)
1241 scan_prog_file (*export_object_lst++, PASS_OBJ);
1244 struct id *list = libs.first;
1246 for (; list; list = list->next)
1247 scan_prog_file (list->name, PASS_FIRST);
1252 char *buf = concat ("-bE:", export_file, NULL);
1257 exportf = fopen (export_file, "w");
1258 if (exportf == (FILE *) 0)
1259 fatal_perror ("fopen %s", export_file);
1260 write_aix_file (exportf, exports.first);
1261 if (fclose (exportf))
1262 fatal_perror ("fclose %s", export_file);
1267 *c_ptr = *ld1 = *object = (char *) 0;
1271 notice ("collect2 version %s", version_string);
1272 #ifdef TARGET_VERSION
1275 fprintf (stderr, "\n");
1281 fprintf (stderr, "ld_file_name = %s\n",
1282 (ld_file_name ? ld_file_name : "not found"));
1283 fprintf (stderr, "c_file_name = %s\n",
1284 (c_file_name ? c_file_name : "not found"));
1285 fprintf (stderr, "nm_file_name = %s\n",
1286 (nm_file_name ? nm_file_name : "not found"));
1288 fprintf (stderr, "ldd_file_name = %s\n",
1289 (ldd_file_name ? ldd_file_name : "not found"));
1291 fprintf (stderr, "strip_file_name = %s\n",
1292 (strip_file_name ? strip_file_name : "not found"));
1293 fprintf (stderr, "c_file = %s\n",
1294 (c_file ? c_file : "not found"));
1295 fprintf (stderr, "o_file = %s\n",
1296 (o_file ? o_file : "not found"));
1298 ptr = getenv ("COLLECT_GCC_OPTIONS");
1300 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1302 ptr = getenv ("COLLECT_GCC");
1304 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1306 ptr = getenv ("COMPILER_PATH");
1308 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1310 ptr = getenv (LIBRARY_PATH_ENV);
1312 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr);
1314 fprintf (stderr, "\n");
1317 /* Load the program, searching all libraries and attempting to provide
1318 undefined symbols from repository information. */
1320 /* On AIX we do this later. */
1321 #ifndef COLLECT_EXPORT_LIST
1322 do_tlink (ld1_argv, object_lst);
1325 /* If -r or they will be run via some other method, do not build the
1326 constructor or destructor list, just return now. */
1328 #ifndef COLLECT_EXPORT_LIST
1333 #ifdef COLLECT_EXPORT_LIST
1334 /* Do the link we avoided above if we are exiting. */
1335 do_tlink (ld1_argv, object_lst);
1337 /* But make sure we delete the export file we may have created. */
1338 if (export_file != 0 && export_file[0])
1339 maybe_unlink (export_file);
1341 maybe_unlink (c_file);
1342 maybe_unlink (o_file);
1346 /* Examine the namelist with nm and search it for static constructors
1347 and destructors to call.
1348 Write the constructor and destructor tables to a .s file and reload. */
1350 /* On AIX we already scanned for global constructors/destructors. */
1351 #ifndef COLLECT_EXPORT_LIST
1352 scan_prog_file (output_file, PASS_FIRST);
1355 #ifdef SCAN_LIBRARIES
1356 scan_libraries (output_file);
1361 notice ("%d constructor(s) found\n", constructors.number);
1362 notice ("%d destructor(s) found\n", destructors.number);
1363 notice ("%d frame table(s) found\n", frame_tables.number);
1366 if (constructors.number == 0 && destructors.number == 0
1367 && frame_tables.number == 0
1368 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1369 /* If we will be running these functions ourselves, we want to emit
1370 stubs into the shared library so that we do not have to relink
1371 dependent programs when we add static objects. */
1376 #ifdef COLLECT_EXPORT_LIST
1377 /* Do tlink without additional code generation */
1378 do_tlink (ld1_argv, object_lst);
1380 /* Strip now if it was requested on the command line. */
1383 char **real_strip_argv = (char **) xcalloc (sizeof (char *), 3);
1384 const char ** strip_argv = (const char **) real_strip_argv;
1386 strip_argv[0] = strip_file_name;
1387 strip_argv[1] = output_file;
1388 strip_argv[2] = (char *) 0;
1389 fork_execute ("strip", real_strip_argv);
1392 #ifdef COLLECT_EXPORT_LIST
1393 maybe_unlink (export_file);
1395 maybe_unlink (c_file);
1396 maybe_unlink (o_file);
1400 /* Sort ctor and dtor lists by priority. */
1401 sort_ids (&constructors);
1402 sort_ids (&destructors);
1404 maybe_unlink(output_file);
1405 outf = fopen (c_file, "w");
1406 if (outf == (FILE *) 0)
1407 fatal_perror ("fopen %s", c_file);
1409 write_c_file (outf, c_file);
1412 fatal_perror ("fclose %s", c_file);
1414 /* Tell the linker that we have initializer and finalizer functions. */
1415 #ifdef LD_INIT_SWITCH
1416 #ifdef COLLECT_EXPORT_LIST
1417 *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL);
1419 *ld2++ = LD_INIT_SWITCH;
1421 *ld2++ = LD_FINI_SWITCH;
1426 #ifdef COLLECT_EXPORT_LIST
1429 /* If we did not add export flag to link arguments before, add it to
1430 second link phase now. No new exports should have been added. */
1431 if (! exports.first)
1432 *ld2++ = concat ("-bE:", export_file, NULL);
1434 add_to_list (&exports, initname);
1435 add_to_list (&exports, fininame);
1436 add_to_list (&exports, "_GLOBAL__DI");
1437 add_to_list (&exports, "_GLOBAL__DD");
1438 exportf = fopen (export_file, "w");
1439 if (exportf == (FILE *) 0)
1440 fatal_perror ("fopen %s", export_file);
1441 write_aix_file (exportf, exports.first);
1442 if (fclose (exportf))
1443 fatal_perror ("fclose %s", export_file);
1447 /* End of arguments to second link phase. */
1452 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1453 output_file, c_file);
1454 write_c_file (stderr, "stderr");
1455 fprintf (stderr, "========== end of c_file\n\n");
1456 #ifdef COLLECT_EXPORT_LIST
1457 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1458 write_aix_file (stderr, exports.first);
1459 fprintf (stderr, "========== end of export_file\n\n");
1463 /* Assemble the constructor and destructor tables.
1464 Link the tables in with the rest of the program. */
1466 fork_execute ("gcc", c_argv);
1467 #ifdef COLLECT_EXPORT_LIST
1468 /* On AIX we must call tlink because of possible templates resolution */
1469 do_tlink (ld2_argv, object_lst);
1471 /* Otherwise, simply call ld because tlink is already done */
1472 fork_execute ("ld", ld2_argv);
1474 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1475 constructors/destructors in shared libraries. */
1476 scan_prog_file (output_file, PASS_SECOND);
1479 maybe_unlink (c_file);
1480 maybe_unlink (o_file);
1482 #ifdef COLLECT_EXPORT_LIST
1483 maybe_unlink (export_file);
1490 /* Wait for a process to finish, and exit if a non-zero status is found. */
1498 pwait (pexecute_pid, &status, 0);
1501 if (WIFSIGNALED (status))
1503 int sig = WTERMSIG (status);
1504 error ("%s terminated with signal %d [%s]%s",
1505 prog, sig, strsignal(sig),
1506 status & 0200 ? "" : ", core dumped");
1507 collect_exit (FATAL_EXIT_CODE);
1510 if (WIFEXITED (status))
1511 return WEXITSTATUS (status);
1520 int ret = collect_wait (prog);
1523 error ("%s returned %d exit status", prog, ret);
1529 /* Execute a program, and wait for the reply. */
1532 collect_execute (prog, argv, redir)
1539 int redir_handle = -1;
1540 int stdout_save = -1;
1541 int stderr_save = -1;
1549 fprintf (stderr, "%s", argv[0]);
1551 notice ("[cannot find %s]", prog);
1553 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1554 fprintf (stderr, " %s", str);
1556 fprintf (stderr, "\n");
1562 /* If we cannot find a program we need, complain error. Do this here
1563 since we might not end up needing something that we could not find. */
1566 fatal ("cannot find `%s'", prog);
1570 /* Open response file. */
1571 redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT);
1573 /* Duplicate the stdout and stderr file handles
1574 so they can be restored later. */
1575 stdout_save = dup (STDOUT_FILENO);
1576 if (stdout_save == -1)
1577 fatal_perror ("redirecting stdout: %s", redir);
1578 stderr_save = dup (STDERR_FILENO);
1579 if (stderr_save == -1)
1580 fatal_perror ("redirecting stdout: %s", redir);
1582 /* Redirect stdout & stderr to our response file. */
1583 dup2 (redir_handle, STDOUT_FILENO);
1584 dup2 (redir_handle, STDERR_FILENO);
1587 pexecute_pid = pexecute (argv[0], argv, argv[0], NULL,
1588 &errmsg_fmt, &errmsg_arg,
1589 (PEXECUTE_FIRST | PEXECUTE_LAST | PEXECUTE_SEARCH));
1593 /* Restore stdout and stderr to their previous settings. */
1594 dup2 (stdout_save, STDOUT_FILENO);
1595 dup2 (stderr_save, STDERR_FILENO);
1597 /* Close response file. */
1598 close (redir_handle);
1601 if (pexecute_pid == -1)
1602 fatal_perror (errmsg_fmt, errmsg_arg);
1606 fork_execute (prog, argv)
1610 collect_execute (prog, argv, NULL);
1614 /* Unlink a file unless we are debugging. */
1623 notice ("[Leaving %s]\n", file);
1627 static long sequence_number = 0;
1629 /* Add a name to a linked list. */
1632 add_to_list (head_ptr, name)
1633 struct head *head_ptr;
1637 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1639 strcpy (newid->name, name);
1641 if (head_ptr->first)
1642 head_ptr->last->next = newid;
1644 head_ptr->first = newid;
1646 /* Check for duplicate symbols. */
1647 for (p = head_ptr->first;
1648 strcmp (name, p->name) != 0;
1653 head_ptr->last->next = 0;
1658 newid->sequence = ++sequence_number;
1659 head_ptr->last = newid;
1663 /* Grab the init priority number from an init function name that
1664 looks like "_GLOBAL_.I.12345.foo". */
1667 extract_init_priority (name)
1672 while (name[pos] == '_')
1674 pos += 10; /* strlen ("GLOBAL__X_") */
1676 /* Extract init_p number from ctor/dtor name. */
1677 pri = atoi (name + pos);
1678 return pri ? pri : DEFAULT_INIT_PRIORITY;
1681 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
1682 ctors will be run from right to left, dtors from left to right. */
1686 struct head *head_ptr;
1688 /* id holds the current element to insert. id_next holds the next
1689 element to insert. id_ptr iterates through the already sorted elements
1690 looking for the place to insert id. */
1691 struct id *id, *id_next, **id_ptr;
1693 id = head_ptr->first;
1695 /* We don't have any sorted elements yet. */
1696 head_ptr->first = NULL;
1698 for (; id; id = id_next)
1701 id->sequence = extract_init_priority (id->name);
1703 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
1705 /* If the sequence numbers are the same, we put the id from the
1706 file later on the command line later in the list. */
1707 || id->sequence > (*id_ptr)->sequence
1708 /* Hack: do lexical compare, too.
1709 || (id->sequence == (*id_ptr)->sequence
1710 && strcmp (id->name, (*id_ptr)->name) > 0) */
1719 /* Now set the sequence numbers properly so write_c_file works. */
1720 for (id = head_ptr->first; id; id = id->next)
1721 id->sequence = ++sequence_number;
1724 /* Write: `prefix', the names on list LIST, `suffix'. */
1727 write_list (stream, prefix, list)
1734 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1739 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
1740 /* Given a STRING, return nonzero if it occurs in the list in range
1741 [ARGS_BEGIN,ARGS_END). */
1744 is_in_args (string, args_begin, args_end)
1746 const char **args_begin;
1747 const char **args_end;
1749 const char **args_pointer;
1750 for (args_pointer = args_begin; args_pointer != args_end; ++args_pointer)
1751 if (strcmp (string, *args_pointer) == 0)
1755 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
1757 #ifdef COLLECT_EXPORT_LIST
1758 /* This function is really used only on AIX, but may be useful. */
1761 is_in_list (prefix, list)
1767 if (!strcmp (prefix, list->name)) return 1;
1773 #endif /* COLLECT_EXPORT_LIST */
1775 /* Added for debugging purpose. */
1776 #ifdef COLLECT_EXPORT_LIST
1778 dump_list (stream, prefix, list)
1785 fprintf (stream, "%s%s,\n", prefix, list->name);
1793 dump_prefix_list (stream, prefix, list)
1796 struct prefix_list *list;
1800 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1807 write_list_with_asm (stream, prefix, list)
1814 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1815 prefix, list->sequence, list->name);
1820 /* Write out the constructor and destructor tables statically (for a shared
1821 object), along with the functions to execute them. */
1824 write_c_file_stat (stream, name)
1826 const char *name ATTRIBUTE_UNUSED;
1830 int frames = (frame_tables.number > 0);
1832 /* Figure out name of output_file, stripping off .so version. */
1833 p = strrchr (output_file, '/');
1849 if (strncmp (q, ".so", 3) == 0)
1858 /* q points to null at end of the string (or . of the .so version) */
1859 prefix = xmalloc (q - p + 1);
1860 strncpy (prefix, p, q - p);
1862 for (r = prefix; *r; r++)
1863 if (!ISALNUM ((unsigned char)*r))
1866 notice ("\nwrite_c_file - output name is %s, prefix is %s\n",
1867 output_file, prefix);
1869 initname = concat ("_GLOBAL__FI_", prefix, NULL);
1870 fininame = concat ("_GLOBAL__FD_", prefix, NULL);
1874 /* Write the tables as C code */
1876 fprintf (stream, "static int count;\n");
1877 fprintf (stream, "typedef void entry_pt();\n");
1878 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1882 write_list_with_asm (stream, "extern void *", frame_tables.first);
1884 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1885 write_list (stream, "\t\t&", frame_tables.first);
1886 fprintf (stream, "\t0\n};\n");
1888 /* This must match what's in frame.h. */
1889 fprintf (stream, "struct object {\n");
1890 fprintf (stream, " void *pc_begin;\n");
1891 fprintf (stream, " void *pc_end;\n");
1892 fprintf (stream, " void *fde_begin;\n");
1893 fprintf (stream, " void *fde_array;\n");
1894 fprintf (stream, " __SIZE_TYPE__ count;\n");
1895 fprintf (stream, " struct object *next;\n");
1896 fprintf (stream, "};\n");
1898 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1899 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1901 fprintf (stream, "static void reg_frame () {\n");
1902 fprintf (stream, "\tstatic struct object ob;\n");
1903 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1904 fprintf (stream, "\t}\n");
1906 fprintf (stream, "static void dereg_frame () {\n");
1907 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1908 fprintf (stream, "\t}\n");
1911 fprintf (stream, "void %s() {\n", initname);
1912 if (constructors.number > 0 || frames)
1914 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1915 write_list (stream, "\t\t", constructors.first);
1917 fprintf (stream, "\treg_frame,\n");
1918 fprintf (stream, "\t};\n");
1919 fprintf (stream, "\tentry_pt **p;\n");
1920 fprintf (stream, "\tif (count++ != 0) return;\n");
1921 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
1922 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1925 fprintf (stream, "\t++count;\n");
1926 fprintf (stream, "}\n");
1927 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1928 fprintf (stream, "void %s() {\n", fininame);
1929 if (destructors.number > 0 || frames)
1931 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1932 write_list (stream, "\t\t", destructors.first);
1934 fprintf (stream, "\tdereg_frame,\n");
1935 fprintf (stream, "\t};\n");
1936 fprintf (stream, "\tentry_pt **p;\n");
1937 fprintf (stream, "\tif (--count != 0) return;\n");
1938 fprintf (stream, "\tp = dtors;\n");
1939 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
1940 destructors.number + frames);
1942 fprintf (stream, "}\n");
1946 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
1947 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
1951 /* Write the constructor/destructor tables. */
1953 #ifndef LD_INIT_SWITCH
1955 write_c_file_glob (stream, name)
1957 const char *name ATTRIBUTE_UNUSED;
1959 /* Write the tables as C code */
1961 int frames = (frame_tables.number > 0);
1963 fprintf (stream, "typedef void entry_pt();\n\n");
1965 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1969 write_list_with_asm (stream, "extern void *", frame_tables.first);
1971 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1972 write_list (stream, "\t\t&", frame_tables.first);
1973 fprintf (stream, "\t0\n};\n");
1975 /* This must match what's in frame.h. */
1976 fprintf (stream, "struct object {\n");
1977 fprintf (stream, " void *pc_begin;\n");
1978 fprintf (stream, " void *pc_end;\n");
1979 fprintf (stream, " void *fde_begin;\n");
1980 fprintf (stream, " void *fde_array;\n");
1981 fprintf (stream, " __SIZE_TYPE__ count;\n");
1982 fprintf (stream, " struct object *next;\n");
1983 fprintf (stream, "};\n");
1985 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1986 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1988 fprintf (stream, "static void reg_frame () {\n");
1989 fprintf (stream, "\tstatic struct object ob;\n");
1990 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1991 fprintf (stream, "\t}\n");
1993 fprintf (stream, "static void dereg_frame () {\n");
1994 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1995 fprintf (stream, "\t}\n");
1998 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
1999 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
2000 write_list (stream, "\t", constructors.first);
2002 fprintf (stream, "\treg_frame,\n");
2003 fprintf (stream, "\t0\n};\n\n");
2005 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2007 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2008 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2009 write_list (stream, "\t", destructors.first);
2011 fprintf (stream, "\tdereg_frame,\n");
2012 fprintf (stream, "\t0\n};\n\n");
2014 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2015 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2017 #endif /* ! LD_INIT_SWITCH */
2020 write_c_file (stream, name)
2024 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2025 #ifndef LD_INIT_SWITCH
2027 write_c_file_glob (stream, name);
2030 write_c_file_stat (stream, name);
2031 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2034 #ifdef COLLECT_EXPORT_LIST
2036 write_aix_file (stream, list)
2040 for (; list; list = list->next)
2042 fputs (list->name, stream);
2043 putc ('\n', stream);
2048 #ifdef OBJECT_FORMAT_NONE
2050 /* Generic version to scan the name list of the loaded program for
2051 the symbols g++ uses for static constructors and destructors.
2053 The constructor table begins at __CTOR_LIST__ and contains a count
2054 of the number of pointers (or -1 if the constructors are built in a
2055 separate section by the linker), followed by the pointers to the
2056 constructor functions, terminated with a null pointer. The
2057 destructor table has the same format, and begins at __DTOR_LIST__. */
2060 scan_prog_file (prog_name, which_pass)
2061 const char *prog_name;
2062 enum pass which_pass;
2064 void (*int_handler) PARAMS ((int));
2065 void (*quit_handler) PARAMS ((int));
2066 char *real_nm_argv[4];
2067 const char **nm_argv = (const char **) real_nm_argv;
2074 if (which_pass == PASS_SECOND)
2077 /* If we do not have an `nm', complain. */
2078 if (nm_file_name == 0)
2079 fatal ("cannot find `nm'");
2081 nm_argv[argc++] = nm_file_name;
2082 if (NM_FLAGS[0] != '\0')
2083 nm_argv[argc++] = NM_FLAGS;
2085 nm_argv[argc++] = prog_name;
2086 nm_argv[argc++] = (char *) 0;
2088 if (pipe (pipe_fd) < 0)
2089 fatal_perror ("pipe");
2091 inf = fdopen (pipe_fd[0], "r");
2092 if (inf == (FILE *) 0)
2093 fatal_perror ("fdopen");
2095 /* Trace if needed. */
2098 const char **p_argv;
2101 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2102 fprintf (stderr, " %s", str);
2104 fprintf (stderr, "\n");
2110 /* Spawn child nm on pipe */
2113 fatal_perror (VFORK_STRING);
2115 if (pid == 0) /* child context */
2118 if (dup2 (pipe_fd[1], 1) < 0)
2119 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2121 if (close (pipe_fd[0]) < 0)
2122 fatal_perror ("close %d", pipe_fd[0]);
2124 if (close (pipe_fd[1]) < 0)
2125 fatal_perror ("close %d", pipe_fd[1]);
2127 execv (nm_file_name, real_nm_argv);
2128 fatal_perror ("execvp %s", nm_file_name);
2131 /* Parent context from here on. */
2132 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2134 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2137 if (close (pipe_fd[1]) < 0)
2138 fatal_perror ("close %d", pipe_fd[1]);
2141 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2143 /* Read each line of nm output. */
2144 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2149 /* If it contains a constructor or destructor name, add the name
2150 to the appropriate list. */
2152 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2153 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2160 /* Find the end of the symbol name.
2161 Do not include `|', because Encore nm can tack that on the end. */
2162 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2168 switch (is_ctor_dtor (name))
2171 if (which_pass != PASS_LIB)
2172 add_to_list (&constructors, name);
2176 if (which_pass != PASS_LIB)
2177 add_to_list (&destructors, name);
2181 if (which_pass != PASS_LIB)
2182 fatal ("init function found in object %s", prog_name);
2183 #ifndef LD_INIT_SWITCH
2184 add_to_list (&constructors, name);
2189 if (which_pass != PASS_LIB)
2190 fatal ("fini function found in object %s", prog_name);
2191 #ifndef LD_FINI_SWITCH
2192 add_to_list (&destructors, name);
2197 if (which_pass != PASS_LIB)
2198 add_to_list (&frame_tables, name);
2201 default: /* not a constructor or destructor */
2206 fprintf (stderr, "\t%s\n", buf);
2210 fprintf (stderr, "\n");
2212 if (fclose (inf) != 0)
2213 fatal_perror ("fclose");
2215 do_wait (nm_file_name);
2217 signal (SIGINT, int_handler);
2219 signal (SIGQUIT, quit_handler);
2223 #if SUNOS4_SHARED_LIBRARIES
2225 /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2226 that the output file depends upon and their initialization/finalization
2227 routines, if any. */
2232 #include <sys/mman.h>
2233 #include <sys/param.h>
2235 #include <sys/dir.h>
2237 /* pointers to the object file */
2238 unsigned object; /* address of memory mapped file */
2239 unsigned objsize; /* size of memory mapped to file */
2240 char * code; /* pointer to code segment */
2241 char * data; /* pointer to data segment */
2242 struct nlist *symtab; /* pointer to symbol table */
2243 struct link_dynamic *ld;
2244 struct link_dynamic_2 *ld_2;
2245 struct head libraries;
2247 /* Map the file indicated by NAME into memory and store its address. */
2249 static void mapfile PARAMS ((const char *));
2257 if ((fp = open (name, O_RDONLY)) == -1)
2258 fatal ("unable to open file '%s'", name);
2259 if (fstat (fp, &s) == -1)
2260 fatal ("unable to stat file '%s'", name);
2262 objsize = s.st_size;
2263 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2265 if (object == (unsigned)-1)
2266 fatal ("unable to mmap file '%s'", name);
2271 /* Helpers for locatelib. */
2273 static const char *libname;
2275 static int libselect PARAMS ((struct direct *));
2281 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2284 /* If one file has an additional numeric extension past LIBNAME, then put
2285 that one first in the sort. If both files have additional numeric
2286 extensions, then put the one with the higher number first in the sort.
2288 We must verify that the extension is numeric, because Sun saves the
2289 original versions of patched libraries with a .FCS extension. Files with
2290 invalid extensions must go last in the sort, so that they will not be used. */
2291 static int libcompare PARAMS ((struct direct **, struct direct **));
2295 struct direct **d1, **d2;
2297 int i1, i2 = strlen (libname);
2298 char *e1 = (*d1)->d_name + i2;
2299 char *e2 = (*d2)->d_name + i2;
2301 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2302 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2306 i1 = strtol (e1, &e1, 10);
2307 i2 = strtol (e2, &e2, 10);
2314 /* It has a valid numeric extension, prefer this one. */
2315 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2317 /* It has an invalid numeric extension, must prefer the other one. */
2323 /* It has a valid numeric extension, prefer this one. */
2324 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2326 /* It has an invalid numeric extension, must prefer the other one. */
2334 /* Given the name NAME of a dynamic dependency, find its pathname and add
2335 it to the list of libraries. */
2336 static void locatelib PARAMS ((const char *));
2342 static const char **l;
2344 char buf[MAXPATHLEN];
2352 /* counting elements in array, need 1 extra for null */
2354 ld_rules = (char *) (ld_2->ld_rules + code);
2358 for (; *ld_rules != 0; ld_rules++)
2359 if (*ld_rules == ':')
2361 ld_rules = (char *) (ld_2->ld_rules + code);
2362 ldr = xstrdup (ld_rules);
2364 p = getenv ("LD_LIBRARY_PATH");
2369 for (q = p ; *q != 0; q++)
2374 l = (const char **) xmalloc ((cnt + 3) * sizeof (char *));
2379 for (; *ldr != 0; ldr++)
2389 for (; *q != 0; q++)
2396 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2399 *pp++ = "/usr/local/lib";
2403 for (pp = l; *pp != 0 ; pp++)
2405 struct direct **namelist;
2407 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2409 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2410 add_to_list (&libraries, buf);
2412 fprintf (stderr, "%s\n", buf);
2419 notice ("not found\n");
2421 fatal ("dynamic dependency %s not found", name);
2425 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2426 that it depends upon and any constructors or destructors they contain. */
2429 scan_libraries (prog_name)
2430 const char *prog_name;
2432 struct exec *header;
2434 struct link_object *lo;
2435 char buff[MAXPATHLEN];
2438 mapfile (prog_name);
2439 header = (struct exec *)object;
2440 if (N_BADMAG (*header))
2441 fatal ("bad magic number in file '%s'", prog_name);
2442 if (header->a_dynamic == 0)
2445 code = (char *) (N_TXTOFF (*header) + (long) header);
2446 data = (char *) (N_DATOFF (*header) + (long) header);
2447 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2449 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2452 ld = (struct link_dynamic *) (symtab->n_value + code);
2458 ld = (struct link_dynamic *) data;
2463 notice ("dynamic dependencies.\n");
2465 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2466 for (lo = (struct link_object *) ld_2->ld_need; lo;
2467 lo = (struct link_object *) lo->lo_next)
2470 lo = (struct link_object *) ((long) lo + code);
2471 name = (char *) (code + lo->lo_name);
2475 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2476 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2482 fprintf (stderr, "\t%s\n", name);
2483 add_to_list (&libraries, name);
2488 fprintf (stderr, "\n");
2490 /* now iterate through the library list adding their symbols to
2492 for (list = libraries.first; list; list = list->next)
2493 scan_prog_file (list->name, PASS_LIB);
2496 #else /* SUNOS4_SHARED_LIBRARIES */
2499 /* Use the List Dynamic Dependencies program to find shared libraries that
2500 the output file depends upon and their initialization/finalization
2501 routines, if any. */
2504 scan_libraries (prog_name)
2505 const char *prog_name;
2507 static struct head libraries; /* list of shared libraries found */
2509 void (*int_handler) PARAMS ((int));
2510 void (*quit_handler) PARAMS ((int));
2511 char *real_ldd_argv[4];
2512 const char **ldd_argv = (const char **) real_ldd_argv;
2519 /* If we do not have an `ldd', complain. */
2520 if (ldd_file_name == 0)
2522 error ("cannot find `ldd'");
2526 ldd_argv[argc++] = ldd_file_name;
2527 ldd_argv[argc++] = prog_name;
2528 ldd_argv[argc++] = (char *) 0;
2530 if (pipe (pipe_fd) < 0)
2531 fatal_perror ("pipe");
2533 inf = fdopen (pipe_fd[0], "r");
2534 if (inf == (FILE *) 0)
2535 fatal_perror ("fdopen");
2537 /* Trace if needed. */
2540 const char **p_argv;
2543 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2544 fprintf (stderr, " %s", str);
2546 fprintf (stderr, "\n");
2552 /* Spawn child ldd on pipe */
2555 fatal_perror (VFORK_STRING);
2557 if (pid == 0) /* child context */
2560 if (dup2 (pipe_fd[1], 1) < 0)
2561 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2563 if (close (pipe_fd[0]) < 0)
2564 fatal_perror ("close %d", pipe_fd[0]);
2566 if (close (pipe_fd[1]) < 0)
2567 fatal_perror ("close %d", pipe_fd[1]);
2569 execv (ldd_file_name, real_ldd_argv);
2570 fatal_perror ("execv %s", ldd_file_name);
2573 /* Parent context from here on. */
2574 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2576 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2579 if (close (pipe_fd[1]) < 0)
2580 fatal_perror ("close %d", pipe_fd[1]);
2583 notice ("\nldd output with constructors/destructors.\n");
2585 /* Read each line of ldd output. */
2586 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2589 char *name, *end, *p = buf;
2591 /* Extract names of libraries and add to list. */
2592 PARSE_LDD_OUTPUT (p);
2597 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2598 fatal ("dynamic dependency %s not found", buf);
2600 /* Find the end of the symbol name. */
2602 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2607 if (access (name, R_OK) == 0)
2608 add_to_list (&libraries, name);
2610 fatal ("unable to open dynamic dependency '%s'", buf);
2613 fprintf (stderr, "\t%s\n", buf);
2616 fprintf (stderr, "\n");
2618 if (fclose (inf) != 0)
2619 fatal_perror ("fclose");
2621 do_wait (ldd_file_name);
2623 signal (SIGINT, int_handler);
2625 signal (SIGQUIT, quit_handler);
2628 /* now iterate through the library list adding their symbols to
2630 for (list = libraries.first; list; list = list->next)
2631 scan_prog_file (list->name, PASS_LIB);
2634 #endif /* LDD_SUFFIX */
2635 #endif /* SUNOS4_SHARED_LIBRARIES */
2637 #endif /* OBJECT_FORMAT_NONE */
2641 * COFF specific stuff.
2644 #ifdef OBJECT_FORMAT_COFF
2646 #if defined(EXTENDED_COFF)
2648 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2649 # define GCC_SYMENT SYMR
2650 # define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal)
2651 # define GCC_SYMINC(X) (1)
2652 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2653 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2657 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2658 # define GCC_SYMENT SYMENT
2659 # define GCC_OK_SYMBOL(X) \
2660 (((X).n_sclass == C_EXT) && \
2661 ((X).n_scnum > N_UNDEF) && \
2663 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
2664 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
2665 # define GCC_UNDEF_SYMBOL(X) \
2666 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
2667 # define GCC_SYMINC(X) ((X).n_numaux+1)
2668 # define GCC_SYMZERO(X) 0
2670 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */
2672 # define GCC_CHECK_HDR(X) \
2673 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2674 || (HEADER (X).f_magic == 0767 && aix64_flag))
2676 # define GCC_CHECK_HDR(X) \
2677 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2678 || (HEADER (X).f_magic == 0757 && aix64_flag))
2683 extern char *ldgetname ();
2685 /* COFF version to scan the name list of the loaded program for
2686 the symbols g++ uses for static constructors and destructors.
2688 The constructor table begins at __CTOR_LIST__ and contains a count
2689 of the number of pointers (or -1 if the constructors are built in a
2690 separate section by the linker), followed by the pointers to the
2691 constructor functions, terminated with a null pointer. The
2692 destructor table has the same format, and begins at __DTOR_LIST__. */
2695 scan_prog_file (prog_name, which_pass)
2696 const char *prog_name;
2697 enum pass which_pass;
2699 LDFILE *ldptr = NULL;
2700 int sym_index, sym_count;
2703 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
2706 #ifdef COLLECT_EXPORT_LIST
2707 /* We do not need scanning for some standard C libraries. */
2708 if (which_pass == PASS_FIRST && ignore_library (prog_name))
2711 /* On AIX we have a loop, because there is not much difference
2712 between an object and an archive. This trick allows us to
2713 eliminate scan_libraries() function. */
2717 /* Some platforms (e.g. OSF4) declare ldopen as taking a
2718 non-const char * filename parameter, even though it will not
2719 modify that string. So we must cast away const-ness here,
2720 which will cause -Wcast-qual to burp. */
2721 if ((ldptr = ldopen ((char *)prog_name, ldptr)) != NULL)
2723 if (! MY_ISCOFF (HEADER (ldptr).f_magic))
2724 fatal ("%s: not a COFF file", prog_name);
2726 if (GCC_CHECK_HDR (ldptr))
2728 sym_count = GCC_SYMBOLS (ldptr);
2729 sym_index = GCC_SYMZERO (ldptr);
2731 #ifdef COLLECT_EXPORT_LIST
2732 /* Is current archive member a shared object? */
2733 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2736 while (sym_index < sym_count)
2740 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2742 sym_index += GCC_SYMINC (symbol);
2744 if (GCC_OK_SYMBOL (symbol))
2748 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2749 continue; /* should never happen */
2751 #ifdef XCOFF_DEBUGGING_INFO
2752 /* All AIX function names have a duplicate entry
2753 beginning with a dot. */
2758 switch (is_ctor_dtor (name))
2762 add_to_list (&constructors, name);
2763 #ifdef COLLECT_EXPORT_LIST
2764 if (which_pass == PASS_OBJ)
2765 add_to_list (&exports, name);
2771 add_to_list (&destructors, name);
2772 #ifdef COLLECT_EXPORT_LIST
2773 if (which_pass == PASS_OBJ)
2774 add_to_list (&exports, name);
2778 #ifdef COLLECT_EXPORT_LIST
2780 #ifndef LD_INIT_SWITCH
2782 add_to_list (&constructors, name);
2787 #ifndef LD_INIT_SWITCH
2789 add_to_list (&destructors, name);
2796 add_to_list (&frame_tables, name);
2797 #ifdef COLLECT_EXPORT_LIST
2798 if (which_pass == PASS_OBJ)
2799 add_to_list (&exports, name);
2803 default: /* not a constructor or destructor */
2804 #ifdef COLLECT_EXPORT_LIST
2805 /* If we are building a shared object on AIX we need
2806 to explicitly export all global symbols. */
2809 if (which_pass == PASS_OBJ && (! export_flag))
2810 add_to_list (&exports, name);
2817 #if !defined(EXTENDED_COFF)
2818 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2819 symbol.n_scnum, symbol.n_sclass,
2820 (symbol.n_type ? "0" : ""), symbol.n_type,
2824 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
2825 symbol.iss, (long) symbol.value, symbol.index, name);
2830 #ifdef COLLECT_EXPORT_LIST
2833 /* If archive contains both 32-bit and 64-bit objects,
2834 we want to skip objects in other mode so mismatch normal. */
2836 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
2837 prog_name, HEADER (ldptr).f_magic, aix64_flag);
2843 fatal ("%s: cannot open as COFF file", prog_name);
2845 #ifdef COLLECT_EXPORT_LIST
2846 /* On AIX loop continues while there are more members in archive. */
2848 while (ldclose (ldptr) == FAILURE);
2850 /* Otherwise we simply close ldptr. */
2851 (void) ldclose(ldptr);
2856 #ifdef COLLECT_EXPORT_LIST
2857 /* Given a library name without "lib" prefix, this function
2858 returns a full library name including a path. */
2860 resolve_lib_name (name)
2866 for (i = 0; libpaths[i]; i++)
2867 if (libpaths[i]->max_len > l)
2868 l = libpaths[i]->max_len;
2870 lib_buf = xmalloc (l + strlen(name) + 10);
2872 for (i = 0; libpaths[i]; i++)
2874 struct prefix_list *list = libpaths[i]->plist;
2875 for (; list; list = list->next)
2877 /* The following lines are needed because path_prefix list
2878 may contain directories both with trailing '/' and
2881 if (list->prefix[strlen(list->prefix)-1] != '/')
2883 for (j = 0; libexts[j]; j++)
2885 sprintf (lib_buf, "%s%slib%s.%s",
2886 list->prefix, p, name, libexts[j]);
2887 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
2888 if (file_exists (lib_buf))
2890 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
2897 fprintf (stderr, "not found\n");
2899 fatal ("Library lib%s not found", name);
2903 /* Array of standard AIX libraries which should not
2904 be scanned for ctors/dtors. */
2905 static const char *const aix_std_libs[] = {
2913 "/usr/lib/libc_r.a",
2914 "/usr/lib/libm_r.a",
2915 "/usr/lib/threads/libc.a",
2916 "/usr/ccs/lib/libc.a",
2917 "/usr/ccs/lib/libm.a",
2918 "/usr/ccs/lib/libc_r.a",
2919 "/usr/ccs/lib/libm_r.a",
2923 /* This function checks the filename and returns 1
2924 if this name matches the location of a standard AIX library. */
2926 ignore_library (name)
2929 const char *const *p = &aix_std_libs[0];
2930 while (*p++ != NULL)
2931 if (! strcmp (name, *p)) return 1;
2936 #endif /* OBJECT_FORMAT_COFF */
2940 * OSF/rose specific stuff.
2943 #ifdef OBJECT_FORMAT_ROSE
2945 /* Union of the various load commands */
2947 typedef union load_union
2949 ldc_header_t hdr; /* common header */
2950 load_cmd_map_command_t map; /* map indexing other load cmds */
2951 interpreter_command_t iprtr; /* interpreter pathname */
2952 strings_command_t str; /* load commands strings section */
2953 region_command_t region; /* region load command */
2954 reloc_command_t reloc; /* relocation section */
2955 package_command_t pkg; /* package load command */
2956 symbols_command_t sym; /* symbol sections */
2957 entry_command_t ent; /* program start section */
2958 gen_info_command_t info; /* object information */
2959 func_table_command_t func; /* function constructors/destructors */
2962 /* Structure to point to load command and data section in memory. */
2964 typedef struct load_all
2966 load_union_t *load; /* load command */
2967 char *section; /* pointer to section */
2970 /* Structure to contain information about a file mapped into memory. */
2974 char *start; /* start of map */
2975 char *name; /* filename */
2976 long size; /* size of the file */
2977 long rounded_size; /* size rounded to page boundary */
2978 int fd; /* file descriptor */
2979 int rw; /* != 0 if opened read/write */
2980 int use_mmap; /* != 0 if mmap'ed */
2983 extern int decode_mach_o_hdr ();
2984 extern int encode_mach_o_hdr ();
2986 static void add_func_table PARAMS ((mo_header_t *, load_all_t *,
2987 symbol_info_t *, int));
2988 static void print_header PARAMS ((mo_header_t *));
2989 static void print_load_command PARAMS ((load_union_t *, size_t, int));
2990 static void bad_header PARAMS ((int));
2991 static struct file_info *read_file PARAMS ((const char *, int, int));
2992 static void end_file PARAMS ((struct file_info *));
2994 /* OSF/rose specific version to scan the name list of the loaded
2995 program for the symbols g++ uses for static constructors and
2998 The constructor table begins at __CTOR_LIST__ and contains a count
2999 of the number of pointers (or -1 if the constructors are built in a
3000 separate section by the linker), followed by the pointers to the
3001 constructor functions, terminated with a null pointer. The
3002 destructor table has the same format, and begins at __DTOR_LIST__. */
3005 scan_prog_file (prog_name, which_pass)
3006 const char *prog_name;
3007 enum pass which_pass;
3011 load_all_t *load_array;
3012 load_all_t *load_end;
3013 load_all_t *load_cmd;
3014 int symbol_load_cmds;
3020 struct file_info *obj_file;
3022 mo_lcid_t cmd_strings = -1;
3023 symbol_info_t *main_sym = 0;
3024 int rw = (which_pass != PASS_FIRST);
3026 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3028 fatal_perror ("open %s", prog_name);
3030 obj_file = read_file (prog_name, prog_fd, rw);
3031 obj = obj_file->start;
3033 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3034 if (status != MO_HDR_CONV_SUCCESS)
3035 bad_header (status);
3038 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3039 since the hardware will automatically swap bytes for us on loading little endian
3042 #ifndef CROSS_COMPILE
3043 if (hdr.moh_magic != MOH_MAGIC_MSB
3044 || hdr.moh_header_version != MOH_HEADER_VERSION
3045 || hdr.moh_byte_order != OUR_BYTE_ORDER
3046 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3047 || hdr.moh_cpu_type != OUR_CPU_TYPE
3048 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3049 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3051 fatal ("incompatibilities between object file & expected values");
3056 print_header (&hdr);
3058 offset = hdr.moh_first_cmd_off;
3059 load_end = load_array
3060 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3062 /* Build array of load commands, calculating the offsets */
3063 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3065 load_union_t *load_hdr; /* load command header */
3067 load_cmd = load_end++;
3068 load_hdr = (load_union_t *) (obj + offset);
3070 /* If modifying the program file, copy the header. */
3073 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3074 memcpy ((char *)ptr, (char *)load_hdr, load_hdr->hdr.ldci_cmd_size);
3077 /* null out old command map, because we will rewrite at the end. */
3078 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3080 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3081 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3085 load_cmd->load = load_hdr;
3086 if (load_hdr->hdr.ldci_section_off > 0)
3087 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3090 print_load_command (load_hdr, offset, i);
3092 offset += load_hdr->hdr.ldci_cmd_size;
3095 /* If the last command is the load command map and is not undefined,
3096 decrement the count of load commands. */
3097 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3100 hdr.moh_n_load_cmds--;
3103 /* Go through and process each symbol table section. */
3104 symbol_load_cmds = 0;
3105 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3107 load_union_t *load_hdr = load_cmd->load;
3109 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3115 const char *kind = "unknown";
3117 switch (load_hdr->sym.symc_kind)
3119 case SYMC_IMPORTS: kind = "imports"; break;
3120 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3121 case SYMC_STABS: kind = "stabs"; break;
3124 notice ("\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3125 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3128 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3131 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3132 if (str_sect == (char *) 0)
3133 fatal ("string section missing");
3135 if (load_cmd->section == (char *) 0)
3136 fatal ("section pointer missing");
3138 num_syms = load_hdr->sym.symc_nentries;
3139 for (i = 0; i < num_syms; i++)
3141 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3142 char *name = sym->si_name.symbol_name + str_sect;
3149 char *n = name + strlen (name) - strlen (NAME__MAIN);
3151 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3161 switch (is_ctor_dtor (name))
3164 add_to_list (&constructors, name);
3168 add_to_list (&destructors, name);
3171 default: /* not a constructor or destructor */
3177 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3178 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3183 if (symbol_load_cmds == 0)
3184 fatal ("no symbol table found");
3186 /* Update the program file now, rewrite header and load commands. At present,
3187 we assume that there is enough space after the last load command to insert
3188 one more. Since the first section written out is page aligned, and the
3189 number of load commands is small, this is ok for the present. */
3193 load_union_t *load_map;
3196 if (cmd_strings == -1)
3197 fatal ("no cmd_strings found");
3199 /* Add __main to initializer list.
3200 If we are building a program instead of a shared library, do not
3201 do anything, since in the current version, you cannot do mallocs
3202 and such in the constructors. */
3204 if (main_sym != (symbol_info_t *) 0
3205 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3206 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3209 notice ("\nUpdating header and load commands.\n\n");
3211 hdr.moh_n_load_cmds++;
3212 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3214 /* Create new load command map. */
3216 notice ("load command map, %d cmds, new size %ld.\n",
3217 (int) hdr.moh_n_load_cmds, (long) size);
3219 load_map = (load_union_t *) xcalloc (1, size);
3220 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3221 load_map->map.ldc_header.ldci_cmd_size = size;
3222 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3223 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3224 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3226 offset = hdr.moh_first_cmd_off;
3227 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3229 load_map->map.lcm_map[i] = offset;
3230 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3231 hdr.moh_load_map_cmd_off = offset;
3233 offset += load_array[i].load->hdr.ldci_cmd_size;
3236 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3239 print_header (&hdr);
3242 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3243 if (status != MO_HDR_CONV_SUCCESS)
3244 bad_header (status);
3247 notice ("writing load commands.\n\n");
3249 /* Write load commands */
3250 offset = hdr.moh_first_cmd_off;
3251 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3253 load_union_t *load_hdr = load_array[i].load;
3254 size_t size = load_hdr->hdr.ldci_cmd_size;
3257 print_load_command (load_hdr, offset, i);
3259 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3264 end_file (obj_file);
3266 if (close (prog_fd))
3267 fatal_perror ("close %s", prog_name);
3270 fprintf (stderr, "\n");
3274 /* Add a function table to the load commands to call a function
3275 on initiation or termination of the process. */
3278 add_func_table (hdr_p, load_array, sym, type)
3279 mo_header_t *hdr_p; /* pointer to global header */
3280 load_all_t *load_array; /* array of ptrs to load cmds */
3281 symbol_info_t *sym; /* pointer to symbol entry */
3282 int type; /* fntc_type value */
3284 /* Add a new load command. */
3285 int num_cmds = ++hdr_p->moh_n_load_cmds;
3286 int load_index = num_cmds - 1;
3287 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3288 load_union_t *ptr = xcalloc (1, size);
3289 load_all_t *load_cmd;
3292 /* Set the unresolved address bit in the header to force the loader to be
3293 used, since kernel exec does not call the initialization functions. */
3294 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3296 load_cmd = &load_array[load_index];
3297 load_cmd->load = ptr;
3298 load_cmd->section = (char *) 0;
3300 /* Fill in func table load command. */
3301 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3302 ptr->func.ldc_header.ldci_cmd_size = size;
3303 ptr->func.ldc_header.ldci_section_off = 0;
3304 ptr->func.ldc_header.ldci_section_len = 0;
3305 ptr->func.fntc_type = type;
3306 ptr->func.fntc_nentries = 1;
3308 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3309 /* Is the symbol already expressed as (region, offset)? */
3310 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3312 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3313 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3316 /* If not, figure out which region it's in. */
3319 mo_vm_addr_t addr = sym->si_value.abs_val;
3322 for (i = 0; i < load_index; i++)
3324 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3326 region_command_t *region_ptr = &load_array[i].load->region;
3328 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3329 && addr >= region_ptr->regc_addr.vm_addr
3330 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3332 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3333 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3341 fatal ("could not convert 0x%l.8x into a region", addr);
3345 notice ("%s function, region %d, offset = %ld (0x%.8lx)\n",
3346 type == FNTC_INITIALIZATION ? "init" : "term",
3347 (int) ptr->func.fntc_entry_loc[i].adr_lcid,
3348 (long) ptr->func.fntc_entry_loc[i].adr_sctoff,
3349 (long) ptr->func.fntc_entry_loc[i].adr_sctoff);
3354 /* Print the global header for an OSF/rose object. */
3357 print_header (hdr_ptr)
3358 mo_header_t *hdr_ptr;
3360 fprintf (stderr, "\nglobal header:\n");
3361 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3362 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3363 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3364 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3365 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3366 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3367 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3368 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3369 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3370 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3371 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3372 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3373 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3374 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3375 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3377 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3378 fprintf (stderr, ", relocatable");
3380 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3381 fprintf (stderr, ", linkable");
3383 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3384 fprintf (stderr, ", execable");
3386 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3387 fprintf (stderr, ", executable");
3389 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3390 fprintf (stderr, ", unresolved");
3392 fprintf (stderr, "\n\n");
3397 /* Print a short summary of a load command. */
3400 print_load_command (load_hdr, offset, number)
3401 load_union_t *load_hdr;
3405 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3406 const char *type_str = (char *) 0;
3410 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3411 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3412 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3413 case LDC_STRINGS: type_str = "STRINGS"; break;
3414 case LDC_REGION: type_str = "REGION"; break;
3415 case LDC_RELOC: type_str = "RELOC"; break;
3416 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3417 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3418 case LDC_ENTRY: type_str = "ENTRY"; break;
3419 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3420 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3424 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3426 (long) load_hdr->hdr.ldci_cmd_size,
3428 (long) load_hdr->hdr.ldci_section_off,
3429 (long) load_hdr->hdr.ldci_section_len);
3431 if (type_str == (char *) 0)
3432 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3434 else if (type != LDC_REGION)
3435 fprintf (stderr, ", ty: %s\n", type_str);
3439 const char *region = "";
3440 switch (load_hdr->region.regc_usage_type)
3442 case REG_TEXT_T: region = ", .text"; break;
3443 case REG_DATA_T: region = ", .data"; break;
3444 case REG_BSS_T: region = ", .bss"; break;
3445 case REG_GLUE_T: region = ", .glue"; break;
3446 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3447 case REG_RDATA_T: region = ", .rdata"; break;
3448 case REG_SDATA_T: region = ", .sdata"; break;
3449 case REG_SBSS_T: region = ", .sbss"; break;
3453 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3455 (long) load_hdr->region.regc_vm_addr,
3456 (long) load_hdr->region.regc_vm_size,
3464 /* Fatal error when {en,de}code_mach_o_header fails. */
3472 case MO_ERROR_BAD_MAGIC: fatal ("bad magic number");
3473 case MO_ERROR_BAD_HDR_VERS: fatal ("bad header version");
3474 case MO_ERROR_BAD_RAW_HDR_VERS: fatal ("bad raw header version");
3475 case MO_ERROR_BUF2SML: fatal ("raw header buffer too small");
3476 case MO_ERROR_OLD_RAW_HDR_FILE: fatal ("old raw header file");
3477 case MO_ERROR_UNSUPPORTED_VERS: fatal ("unsupported version");
3479 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3484 /* Read a file into a memory buffer. */
3486 static struct file_info *
3487 read_file (name, fd, rw)
3488 const char *name; /* filename */
3489 int fd; /* file descriptor */
3490 int rw; /* read/write */
3492 struct stat stat_pkt;
3493 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3495 static int page_size;
3498 if (fstat (fd, &stat_pkt) < 0)
3499 fatal_perror ("fstat %s", name);
3502 p->size = stat_pkt.st_size;
3503 p->rounded_size = stat_pkt.st_size;
3509 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3512 page_size = sysconf (_SC_PAGE_SIZE);
3514 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3515 p->start = mmap ((caddr_t) 0,
3516 (rw) ? p->rounded_size : p->size,
3517 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3518 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3522 if (p->start != (char *) 0 && p->start != (char *) -1)
3526 #endif /* USE_MMAP */
3531 fprintf (stderr, "read %s\n", name);
3534 p->start = xmalloc (p->size);
3535 if (lseek (fd, 0L, SEEK_SET) < 0)
3536 fatal_perror ("lseek %s 0", name);
3538 len = read (fd, p->start, p->size);
3540 fatal_perror ("read %s", name);
3543 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3549 /* Do anything necessary to write a file back from memory. */
3553 struct file_info *ptr; /* file information block */
3561 fprintf (stderr, "msync %s\n", ptr->name);
3563 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3564 fatal_perror ("msync %s", ptr->name);
3568 fprintf (stderr, "munmap %s\n", ptr->name);
3570 if (munmap (ptr->start, ptr->size))
3571 fatal_perror ("munmap %s", ptr->name);
3574 #endif /* USE_MMAP */
3581 fprintf (stderr, "write %s\n", ptr->name);
3583 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3584 fatal_perror ("lseek %s 0", ptr->name);
3586 len = write (ptr->fd, ptr->start, ptr->size);
3588 fatal_perror ("write %s", ptr->name);
3590 if (len != ptr->size)
3591 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3600 #endif /* OBJECT_FORMAT_ROSE */