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; int len; int ret; int two_underscores; };
562 register struct names *p;
564 register const char *orig_s = s;
566 static struct names special[] = {
567 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
568 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
569 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
570 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
571 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
572 #ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
573 cfront has its own linker procedure to collect them;
574 if collect2 gets them too, they get collected twice
575 when the cfront procedure is run and the compiler used
576 for linking happens to be GCC. */
577 { "sti__", sizeof ("sti__")-1, 1, 1 },
578 { "std__", sizeof ("std__")-1, 2, 1 },
579 #endif /* CFRONT_LOSSAGE */
583 while ((ch = *s) == '_')
589 for (p = &special[0]; p->len > 0; p++)
592 && (!p->two_underscores || ((s - orig_s) >= 2))
593 && strncmp(s, p->name, p->len) == 0)
601 /* We maintain two prefix lists: one from COMPILER_PATH environment variable
602 and one from the PATH variable. */
604 static struct path_prefix cpath, path;
607 /* This is the name of the target machine. We use it to form the name
608 of the files to execute. */
610 static const char *const target_machine = TARGET_MACHINE;
613 /* Search for NAME using prefix list PPREFIX. We only look for executable
616 Return 0 if not found, otherwise return its name, allocated with malloc. */
619 find_a_file (pprefix, name)
620 struct path_prefix *pprefix;
624 struct prefix_list *pl;
625 int len = pprefix->max_len + strlen (name) + 1;
628 fprintf (stderr, "Looking for '%s'\n", name);
630 #ifdef HOST_EXECUTABLE_SUFFIX
631 len += strlen (HOST_EXECUTABLE_SUFFIX);
634 temp = xmalloc (len);
636 /* Determine the filename to execute (special case for absolute paths). */
639 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
640 || (*name && name[1] == ':')
644 if (access (name, X_OK) == 0)
649 fprintf (stderr, " - found: absolute path\n");
654 #ifdef HOST_EXECUTABLE_SUFFIX
655 /* Some systems have a suffix for executable files.
656 So try appending that. */
658 strcat (temp, HOST_EXECUTABLE_SUFFIX);
660 if (access (temp, X_OK) == 0)
665 fprintf (stderr, " - failed to locate using absolute path\n");
668 for (pl = pprefix->plist; pl; pl = pl->next)
672 strcpy (temp, pl->prefix);
675 if (stat (temp, &st) >= 0
676 && ! S_ISDIR (st.st_mode)
677 && access (temp, X_OK) == 0)
680 #ifdef HOST_EXECUTABLE_SUFFIX
681 /* Some systems have a suffix for executable files.
682 So try appending that. */
683 strcat (temp, HOST_EXECUTABLE_SUFFIX);
685 if (stat (temp, &st) >= 0
686 && ! S_ISDIR (st.st_mode)
687 && access (temp, X_OK) == 0)
692 if (debug && pprefix->plist == NULL)
693 fprintf (stderr, " - failed: no entries in prefix list\n");
699 /* Add an entry for PREFIX to prefix list PPREFIX. */
702 add_prefix (pprefix, prefix)
703 struct path_prefix *pprefix;
706 struct prefix_list *pl, **prev;
711 for (pl = pprefix->plist; pl->next; pl = pl->next)
716 prev = &pprefix->plist;
718 /* Keep track of the longest prefix */
720 len = strlen (prefix);
721 if (len > pprefix->max_len)
722 pprefix->max_len = len;
724 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
725 pl->prefix = xstrdup (prefix);
730 pl->next = (struct prefix_list *) 0;
734 /* Take the value of the environment variable ENV, break it into a path, and
735 add of the entries to PPREFIX. */
738 prefix_from_env (env, pprefix)
740 struct path_prefix *pprefix;
743 GET_ENV_PATH_LIST (p, env);
746 prefix_from_string (p, pprefix);
750 prefix_from_string (p, pprefix)
752 struct path_prefix *pprefix;
754 const char *startp, *endp;
755 char *nstore = (char *) xmalloc (strlen (p) + 3);
758 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
763 if (*endp == PATH_SEPARATOR || *endp == 0)
765 strncpy (nstore, startp, endp-startp);
768 strcpy (nstore, "./");
770 else if (! IS_DIR_SEPARATOR (endp[-1]))
772 nstore[endp-startp] = DIR_SEPARATOR;
773 nstore[endp-startp+1] = 0;
776 nstore[endp-startp] = 0;
779 fprintf (stderr, " - add prefix: %s\n", nstore);
781 add_prefix (pprefix, nstore);
784 endp = startp = endp + 1;
793 int main PARAMS ((int, char *[]));
799 static const char *const ld_suffix = "ld";
800 static const char *const real_ld_suffix = "real-ld";
801 static const char *const collect_ld_suffix = "collect-ld";
802 static const char *const nm_suffix = "nm";
803 static const char *const gnm_suffix = "gnm";
805 static const char *const ldd_suffix = LDD_SUFFIX;
807 static const char *const strip_suffix = "strip";
808 static const char *const gstrip_suffix = "gstrip";
811 /* If we look for a program in the compiler directories, we just use
812 the short name, since these directories are already system-specific.
813 But it we look for a program in the system directories, we need to
814 qualify the program name with the target machine. */
816 const char *const full_ld_suffix =
817 concat(target_machine, "-", ld_suffix, NULL);
818 const char *const full_nm_suffix =
819 concat (target_machine, "-", nm_suffix, NULL);
820 const char *const full_gnm_suffix =
821 concat (target_machine, "-", gnm_suffix, NULL);
823 const char *const full_ldd_suffix =
824 concat (target_machine, "-", ldd_suffix, NULL);
826 const char *const full_strip_suffix =
827 concat (target_machine, "-", strip_suffix, NULL);
828 const char *const full_gstrip_suffix =
829 concat (target_machine, "-", gstrip_suffix, NULL);
831 const char *const full_ld_suffix = ld_suffix;
832 const char *const full_nm_suffix = nm_suffix;
833 const char *const full_gnm_suffix = gnm_suffix;
835 const char *const full_ldd_suffix = ldd_suffix;
837 const char *const full_strip_suffix = strip_suffix;
838 const char *const full_gstrip_suffix = gstrip_suffix;
839 #endif /* CROSS_COMPILE */
843 #ifdef COLLECT_EXPORT_LIST
846 const char *ld_file_name;
857 int num_c_args = argc+9;
859 no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
861 /* Suppress demangling by the real linker, which may be broken. */
862 putenv (xstrdup ("COLLECT_NO_DEMANGLE="));
864 #if defined (COLLECT2_HOST_INITIALIZATION)
865 /* Perform system dependent initialization, if neccessary. */
866 COLLECT2_HOST_INITIALIZATION;
870 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
871 receive the signal. A different setting is inheritable */
872 signal (SIGCHLD, SIG_DFL);
875 /* LC_CTYPE determines the character set used by the terminal so it has be set
876 to output messages correctly. */
878 #ifdef HAVE_LC_MESSAGES
879 setlocale (LC_CTYPE, "");
880 setlocale (LC_MESSAGES, "");
882 setlocale (LC_ALL, "");
885 (void) bindtextdomain (PACKAGE, localedir);
886 (void) textdomain (PACKAGE);
888 /* Do not invoke xcalloc before this point, since locale needs to be
889 set first, in case a diagnostic is issued. */
891 ld1 = (const char **)(ld1_argv = (char **) xcalloc(sizeof (char *), argc+3));
892 ld2 = (const char **)(ld2_argv = (char **) xcalloc(sizeof (char *), argc+10));
893 object = (const char **)(object_lst = (char **) xcalloc(sizeof (char *), argc));
899 /* Parse command line early for instances of -debug. This allows
900 the debug flag to be set before functions like find_a_file()
905 for (i = 1; argv[i] != NULL; i ++)
906 if (! strcmp (argv[i], "-debug"))
911 #ifndef DEFAULT_A_OUT_NAME
912 output_file = "a.out";
914 output_file = DEFAULT_A_OUT_NAME;
917 obstack_begin (&temporary_obstack, 0);
918 obstack_begin (&permanent_obstack, 0);
919 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
921 current_demangling_style = auto_demangling;
922 p = getenv ("COLLECT_GCC_OPTIONS");
925 const char *q = extract_string (&p);
926 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
929 obstack_free (&temporary_obstack, temporary_firstobj);
931 /* -fno-exceptions -w */
934 c_ptr = (const char **)
935 (c_argv = (char **) xcalloc (sizeof (char *), num_c_args));
938 fatal ("no arguments");
941 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
942 signal (SIGQUIT, handler);
944 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
945 signal (SIGINT, handler);
947 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
948 signal (SIGALRM, handler);
951 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
952 signal (SIGHUP, handler);
954 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
955 signal (SIGSEGV, handler);
957 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
958 signal (SIGBUS, handler);
961 /* Extract COMPILER_PATH and PATH into our prefix list. */
962 prefix_from_env ("COMPILER_PATH", &cpath);
963 prefix_from_env ("PATH", &path);
965 /* Try to discover a valid linker/nm/strip to use. */
967 /* Maybe we know the right file to use (if not cross). */
969 #ifdef DEFAULT_LINKER
970 if (access (DEFAULT_LINKER, X_OK) == 0)
971 ld_file_name = DEFAULT_LINKER;
972 if (ld_file_name == 0)
974 #ifdef REAL_LD_FILE_NAME
975 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
976 if (ld_file_name == 0)
978 /* Search the (target-specific) compiler dirs for ld'. */
979 ld_file_name = find_a_file (&cpath, real_ld_suffix);
980 /* Likewise for `collect-ld'. */
981 if (ld_file_name == 0)
982 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
983 /* Search the compiler directories for `ld'. We have protection against
984 recursive calls in find_a_file. */
985 if (ld_file_name == 0)
986 ld_file_name = find_a_file (&cpath, ld_suffix);
987 /* Search the ordinary system bin directories
988 for `ld' (if native linking) or `TARGET-ld' (if cross). */
989 if (ld_file_name == 0)
990 ld_file_name = find_a_file (&path, full_ld_suffix);
992 #ifdef REAL_NM_FILE_NAME
993 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
994 if (nm_file_name == 0)
996 nm_file_name = find_a_file (&cpath, gnm_suffix);
997 if (nm_file_name == 0)
998 nm_file_name = find_a_file (&path, full_gnm_suffix);
999 if (nm_file_name == 0)
1000 nm_file_name = find_a_file (&cpath, nm_suffix);
1001 if (nm_file_name == 0)
1002 nm_file_name = find_a_file (&path, full_nm_suffix);
1005 ldd_file_name = find_a_file (&cpath, ldd_suffix);
1006 if (ldd_file_name == 0)
1007 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1010 #ifdef REAL_STRIP_FILE_NAME
1011 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1012 if (strip_file_name == 0)
1014 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1015 if (strip_file_name == 0)
1016 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1017 if (strip_file_name == 0)
1018 strip_file_name = find_a_file (&cpath, strip_suffix);
1019 if (strip_file_name == 0)
1020 strip_file_name = find_a_file (&path, full_strip_suffix);
1022 /* Determine the full path name of the C compiler to use. */
1023 c_file_name = getenv ("COLLECT_GCC");
1024 if (c_file_name == 0)
1026 #ifdef CROSS_COMPILE
1027 c_file_name = concat (target_machine, "-gcc", NULL);
1029 c_file_name = "gcc";
1033 p = find_a_file (&cpath, c_file_name);
1035 /* Here it should be safe to use the system search path since we should have
1036 already qualified the name of the compiler when it is needed. */
1038 p = find_a_file (&path, c_file_name);
1043 *ld1++ = *ld2++ = ld_file_name;
1045 /* Make temp file names. */
1046 c_file = make_temp_file (".c");
1047 o_file = make_temp_file (".o");
1048 #ifdef COLLECT_EXPORT_LIST
1049 export_file = make_temp_file (".x");
1051 ldout = make_temp_file (".ld");
1052 *c_ptr++ = c_file_name;
1059 #ifdef COLLECT_EXPORT_LIST
1060 /* Generate a list of directories from LIBPATH. */
1061 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1062 /* Add to this list also two standard directories where
1063 AIX loader always searches for libraries. */
1064 add_prefix (&libpath_lib_dirs, "/lib");
1065 add_prefix (&libpath_lib_dirs, "/usr/lib");
1068 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1070 AIX support needs to know if -shared has been specified before
1071 parsing commandline arguments. */
1073 p = getenv ("COLLECT_GCC_OPTIONS");
1076 const char *q = extract_string (&p);
1077 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1078 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1079 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
1080 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1081 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1083 if (*q == '-' && q[1] == 'B')
1085 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1088 q = extract_string (&p);
1089 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1093 obstack_free (&temporary_obstack, temporary_firstobj);
1094 *c_ptr++ = "-fno-exceptions";
1097 /* !!! When GCC calls collect2,
1098 it does not know whether it is calling collect2 or ld.
1099 So collect2 cannot meaningfully understand any options
1100 except those ld understands.
1101 If you propose to make GCC pass some other option,
1102 just imagine what will happen if ld is really ld!!! */
1104 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1105 /* After the first file, put in the c++ rt0. */
1108 while ((arg = *++argv) != (char *) 0)
1110 *ld1++ = *ld2++ = arg;
1116 #ifdef COLLECT_EXPORT_LIST
1117 /* We want to disable automatic exports on AIX when user
1118 explicitly puts an export list in command line */
1120 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1122 else if (arg[2] == '6' && arg[3] == '4')
1128 if (!strcmp (arg, "-debug"))
1130 /* Already parsed. */
1139 /* place o_file BEFORE this argument! */
1145 #ifdef COLLECT_EXPORT_LIST
1147 /* Resolving full library name. */
1148 const char *s = resolve_lib_name (arg+2);
1150 /* Saving a full library name. */
1151 add_to_list (&libs, s);
1156 #ifdef COLLECT_EXPORT_LIST
1157 /* Saving directories where to search for libraries. */
1159 add_prefix (&cmdline_lib_dirs, arg+2);
1162 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
1164 if (is_in_args (arg, (const char **) ld1_argv, ld1-1))
1167 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
1172 output_file = *ld1++ = *ld2++ = *++argv;
1174 #ifdef SWITCHES_NEED_SPACES
1175 && ! strchr (SWITCHES_NEED_SPACES, arg[1])
1179 output_file = &arg[2];
1188 if (arg[2] == '\0' && do_collecting)
1190 /* We must strip after the nm run, otherwise C++ linking
1191 will not work. Thus we strip in the second ld run, or
1192 else with strip if there is no second ld run. */
1204 else if ((p = strrchr (arg, '.')) != (char *) 0
1205 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1206 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0
1207 || strcmp (p, ".obj") == 0))
1216 /* place o_file BEFORE this argument! */
1222 if (p[1] == 'o' || p[1] == 'l')
1224 #ifdef COLLECT_EXPORT_LIST
1225 /* libraries can be specified directly, i.e. without -l flag. */
1228 /* Saving a full library name. */
1229 add_to_list (&libs, arg);
1235 #ifdef COLLECT_EXPORT_LIST
1236 /* This is added only for debugging purposes. */
1239 fprintf (stderr, "List of libraries:\n");
1240 dump_list (stderr, "\t", libs.first);
1243 /* The AIX linker will discard static constructors in object files if
1244 nothing else in the file is referenced, so look at them first. */
1246 const char **export_object_lst = (const char **)object_lst;
1248 while (export_object_lst < object)
1249 scan_prog_file (*export_object_lst++, PASS_OBJ);
1252 struct id *list = libs.first;
1254 for (; list; list = list->next)
1255 scan_prog_file (list->name, PASS_FIRST);
1260 char *buf = concat ("-bE:", export_file, NULL);
1265 exportf = fopen (export_file, "w");
1266 if (exportf == (FILE *) 0)
1267 fatal_perror ("fopen %s", export_file);
1268 write_aix_file (exportf, exports.first);
1269 if (fclose (exportf))
1270 fatal_perror ("fclose %s", export_file);
1275 *c_ptr = *ld1 = *object = (char *) 0;
1279 notice ("collect2 version %s", version_string);
1280 #ifdef TARGET_VERSION
1283 fprintf (stderr, "\n");
1289 fprintf (stderr, "ld_file_name = %s\n",
1290 (ld_file_name ? ld_file_name : "not found"));
1291 fprintf (stderr, "c_file_name = %s\n",
1292 (c_file_name ? c_file_name : "not found"));
1293 fprintf (stderr, "nm_file_name = %s\n",
1294 (nm_file_name ? nm_file_name : "not found"));
1296 fprintf (stderr, "ldd_file_name = %s\n",
1297 (ldd_file_name ? ldd_file_name : "not found"));
1299 fprintf (stderr, "strip_file_name = %s\n",
1300 (strip_file_name ? strip_file_name : "not found"));
1301 fprintf (stderr, "c_file = %s\n",
1302 (c_file ? c_file : "not found"));
1303 fprintf (stderr, "o_file = %s\n",
1304 (o_file ? o_file : "not found"));
1306 ptr = getenv ("COLLECT_GCC_OPTIONS");
1308 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1310 ptr = getenv ("COLLECT_GCC");
1312 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1314 ptr = getenv ("COMPILER_PATH");
1316 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1318 ptr = getenv (LIBRARY_PATH_ENV);
1320 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr);
1322 fprintf (stderr, "\n");
1325 /* Load the program, searching all libraries and attempting to provide
1326 undefined symbols from repository information. */
1328 /* On AIX we do this later. */
1329 #ifndef COLLECT_EXPORT_LIST
1330 do_tlink (ld1_argv, object_lst);
1333 /* If -r or they will be run via some other method, do not build the
1334 constructor or destructor list, just return now. */
1336 #ifndef COLLECT_EXPORT_LIST
1341 #ifdef COLLECT_EXPORT_LIST
1342 /* Do the link we avoided above if we are exiting. */
1343 do_tlink (ld1_argv, object_lst);
1345 /* But make sure we delete the export file we may have created. */
1346 if (export_file != 0 && export_file[0])
1347 maybe_unlink (export_file);
1349 maybe_unlink (c_file);
1350 maybe_unlink (o_file);
1354 /* Examine the namelist with nm and search it for static constructors
1355 and destructors to call.
1356 Write the constructor and destructor tables to a .s file and reload. */
1358 /* On AIX we already scanned for global constructors/destructors. */
1359 #ifndef COLLECT_EXPORT_LIST
1360 scan_prog_file (output_file, PASS_FIRST);
1363 #ifdef SCAN_LIBRARIES
1364 scan_libraries (output_file);
1369 notice ("%d constructor(s) found\n", constructors.number);
1370 notice ("%d destructor(s) found\n", destructors.number);
1371 notice ("%d frame table(s) found\n", frame_tables.number);
1374 if (constructors.number == 0 && destructors.number == 0
1375 && frame_tables.number == 0
1376 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1377 /* If we will be running these functions ourselves, we want to emit
1378 stubs into the shared library so that we do not have to relink
1379 dependent programs when we add static objects. */
1384 #ifdef COLLECT_EXPORT_LIST
1385 /* Do tlink without additional code generation */
1386 do_tlink (ld1_argv, object_lst);
1388 /* Strip now if it was requested on the command line. */
1391 char **real_strip_argv = (char **) xcalloc (sizeof (char *), 3);
1392 const char ** strip_argv = (const char **) real_strip_argv;
1394 strip_argv[0] = strip_file_name;
1395 strip_argv[1] = output_file;
1396 strip_argv[2] = (char *) 0;
1397 fork_execute ("strip", real_strip_argv);
1400 #ifdef COLLECT_EXPORT_LIST
1401 maybe_unlink (export_file);
1403 maybe_unlink (c_file);
1404 maybe_unlink (o_file);
1408 /* Sort ctor and dtor lists by priority. */
1409 sort_ids (&constructors);
1410 sort_ids (&destructors);
1412 maybe_unlink(output_file);
1413 outf = fopen (c_file, "w");
1414 if (outf == (FILE *) 0)
1415 fatal_perror ("fopen %s", c_file);
1417 write_c_file (outf, c_file);
1420 fatal_perror ("fclose %s", c_file);
1422 /* Tell the linker that we have initializer and finalizer functions. */
1423 #ifdef LD_INIT_SWITCH
1424 #ifdef COLLECT_EXPORT_LIST
1425 *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL);
1427 *ld2++ = LD_INIT_SWITCH;
1429 *ld2++ = LD_FINI_SWITCH;
1434 #ifdef COLLECT_EXPORT_LIST
1437 /* If we did not add export flag to link arguments before, add it to
1438 second link phase now. No new exports should have been added. */
1439 if (! exports.first)
1440 *ld2++ = concat ("-bE:", export_file, NULL);
1442 add_to_list (&exports, initname);
1443 add_to_list (&exports, fininame);
1444 add_to_list (&exports, "_GLOBAL__DI");
1445 add_to_list (&exports, "_GLOBAL__DD");
1446 exportf = fopen (export_file, "w");
1447 if (exportf == (FILE *) 0)
1448 fatal_perror ("fopen %s", export_file);
1449 write_aix_file (exportf, exports.first);
1450 if (fclose (exportf))
1451 fatal_perror ("fclose %s", export_file);
1455 /* End of arguments to second link phase. */
1460 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1461 output_file, c_file);
1462 write_c_file (stderr, "stderr");
1463 fprintf (stderr, "========== end of c_file\n\n");
1464 #ifdef COLLECT_EXPORT_LIST
1465 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1466 write_aix_file (stderr, exports.first);
1467 fprintf (stderr, "========== end of export_file\n\n");
1471 /* Assemble the constructor and destructor tables.
1472 Link the tables in with the rest of the program. */
1474 fork_execute ("gcc", c_argv);
1475 #ifdef COLLECT_EXPORT_LIST
1476 /* On AIX we must call tlink because of possible templates resolution */
1477 do_tlink (ld2_argv, object_lst);
1479 /* Otherwise, simply call ld because tlink is already done */
1480 fork_execute ("ld", ld2_argv);
1482 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1483 constructors/destructors in shared libraries. */
1484 scan_prog_file (output_file, PASS_SECOND);
1487 maybe_unlink (c_file);
1488 maybe_unlink (o_file);
1490 #ifdef COLLECT_EXPORT_LIST
1491 maybe_unlink (export_file);
1498 /* Wait for a process to finish, and exit if a non-zero status is found. */
1506 pwait (pexecute_pid, &status, 0);
1509 if (WIFSIGNALED (status))
1511 int sig = WTERMSIG (status);
1512 error ("%s terminated with signal %d [%s]%s",
1513 prog, sig, strsignal(sig),
1514 status & 0200 ? "" : ", core dumped");
1515 collect_exit (FATAL_EXIT_CODE);
1518 if (WIFEXITED (status))
1519 return WEXITSTATUS (status);
1528 int ret = collect_wait (prog);
1531 error ("%s returned %d exit status", prog, ret);
1537 /* Execute a program, and wait for the reply. */
1540 collect_execute (prog, argv, redir)
1547 int redir_handle = -1;
1548 int stdout_save = -1;
1549 int stderr_save = -1;
1557 fprintf (stderr, "%s", argv[0]);
1559 notice ("[cannot find %s]", prog);
1561 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1562 fprintf (stderr, " %s", str);
1564 fprintf (stderr, "\n");
1570 /* If we cannot find a program we need, complain error. Do this here
1571 since we might not end up needing something that we could not find. */
1574 fatal ("cannot find `%s'", prog);
1578 /* Open response file. */
1579 redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT);
1581 /* Duplicate the stdout and stderr file handles
1582 so they can be restored later. */
1583 stdout_save = dup (STDOUT_FILENO);
1584 if (stdout_save == -1)
1585 fatal_perror ("redirecting stdout: %s", redir);
1586 stderr_save = dup (STDERR_FILENO);
1587 if (stderr_save == -1)
1588 fatal_perror ("redirecting stdout: %s", redir);
1590 /* Redirect stdout & stderr to our response file. */
1591 dup2 (redir_handle, STDOUT_FILENO);
1592 dup2 (redir_handle, STDERR_FILENO);
1595 pexecute_pid = pexecute (argv[0], argv, argv[0], NULL,
1596 &errmsg_fmt, &errmsg_arg,
1597 (PEXECUTE_FIRST | PEXECUTE_LAST | PEXECUTE_SEARCH));
1601 /* Restore stdout and stderr to their previous settings. */
1602 dup2 (stdout_save, STDOUT_FILENO);
1603 dup2 (stderr_save, STDERR_FILENO);
1605 /* Close reponse file. */
1606 close (redir_handle);
1609 if (pexecute_pid == -1)
1610 fatal_perror (errmsg_fmt, errmsg_arg);
1614 fork_execute (prog, argv)
1618 collect_execute (prog, argv, NULL);
1622 /* Unlink a file unless we are debugging. */
1631 notice ("[Leaving %s]\n", file);
1635 static long sequence_number = 0;
1637 /* Add a name to a linked list. */
1640 add_to_list (head_ptr, name)
1641 struct head *head_ptr;
1645 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1647 strcpy (newid->name, name);
1649 if (head_ptr->first)
1650 head_ptr->last->next = newid;
1652 head_ptr->first = newid;
1654 /* Check for duplicate symbols. */
1655 for (p = head_ptr->first;
1656 strcmp (name, p->name) != 0;
1661 head_ptr->last->next = 0;
1666 newid->sequence = ++sequence_number;
1667 head_ptr->last = newid;
1671 /* Grab the init priority number from an init function name that
1672 looks like "_GLOBAL_.I.12345.foo". */
1675 extract_init_priority (name)
1680 while (name[pos] == '_')
1682 pos += 10; /* strlen ("GLOBAL__X_") */
1684 /* Extract init_p number from ctor/dtor name. */
1685 pri = atoi (name + pos);
1686 return pri ? pri : DEFAULT_INIT_PRIORITY;
1689 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
1690 ctors will be run from right to left, dtors from left to right. */
1694 struct head *head_ptr;
1696 /* id holds the current element to insert. id_next holds the next
1697 element to insert. id_ptr iterates through the already sorted elements
1698 looking for the place to insert id. */
1699 struct id *id, *id_next, **id_ptr;
1701 id = head_ptr->first;
1703 /* We don't have any sorted elements yet. */
1704 head_ptr->first = NULL;
1706 for (; id; id = id_next)
1709 id->sequence = extract_init_priority (id->name);
1711 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
1713 /* If the sequence numbers are the same, we put the id from the
1714 file later on the command line later in the list. */
1715 || id->sequence > (*id_ptr)->sequence
1716 /* Hack: do lexical compare, too.
1717 || (id->sequence == (*id_ptr)->sequence
1718 && strcmp (id->name, (*id_ptr)->name) > 0) */
1727 /* Now set the sequence numbers properly so write_c_file works. */
1728 for (id = head_ptr->first; id; id = id->next)
1729 id->sequence = ++sequence_number;
1732 /* Write: `prefix', the names on list LIST, `suffix'. */
1735 write_list (stream, prefix, list)
1742 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1747 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
1748 /* Given a STRING, return nonzero if it occurs in the list in range
1749 [ARGS_BEGIN,ARGS_END). */
1752 is_in_args (string, args_begin, args_end)
1754 const char **args_begin;
1755 const char **args_end;
1757 const char **args_pointer;
1758 for (args_pointer = args_begin; args_pointer != args_end; ++args_pointer)
1759 if (strcmp (string, *args_pointer) == 0)
1763 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
1765 #ifdef COLLECT_EXPORT_LIST
1766 /* This function is really used only on AIX, but may be useful. */
1768 is_in_list (prefix, list)
1774 if (!strcmp (prefix, list->name)) return 1;
1781 /* Added for debugging purpose. */
1782 #ifdef COLLECT_EXPORT_LIST
1784 dump_list (stream, prefix, list)
1791 fprintf (stream, "%s%s,\n", prefix, list->name);
1799 dump_prefix_list (stream, prefix, list)
1802 struct prefix_list *list;
1806 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1813 write_list_with_asm (stream, prefix, list)
1820 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1821 prefix, list->sequence, list->name);
1826 /* Write out the constructor and destructor tables statically (for a shared
1827 object), along with the functions to execute them. */
1830 write_c_file_stat (stream, name)
1832 const char *name ATTRIBUTE_UNUSED;
1836 int frames = (frame_tables.number > 0);
1838 /* Figure out name of output_file, stripping off .so version. */
1839 p = strrchr (output_file, '/');
1855 if (strncmp (q, ".so", 3) == 0)
1864 /* q points to null at end of the string (or . of the .so version) */
1865 prefix = xmalloc (q - p + 1);
1866 strncpy (prefix, p, q - p);
1868 for (r = prefix; *r; r++)
1869 if (!ISALNUM ((unsigned char)*r))
1872 notice ("\nwrite_c_file - output name is %s, prefix is %s\n",
1873 output_file, prefix);
1875 initname = concat ("_GLOBAL__FI_", prefix, NULL);
1876 fininame = concat ("_GLOBAL__FD_", prefix, NULL);
1880 /* Write the tables as C code */
1882 fprintf (stream, "static int count;\n");
1883 fprintf (stream, "typedef void entry_pt();\n");
1884 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1888 write_list_with_asm (stream, "extern void *", frame_tables.first);
1890 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1891 write_list (stream, "\t\t&", frame_tables.first);
1892 fprintf (stream, "\t0\n};\n");
1894 /* This must match what's in frame.h. */
1895 fprintf (stream, "struct object {\n");
1896 fprintf (stream, " void *pc_begin;\n");
1897 fprintf (stream, " void *pc_end;\n");
1898 fprintf (stream, " void *fde_begin;\n");
1899 fprintf (stream, " void *fde_array;\n");
1900 fprintf (stream, " __SIZE_TYPE__ count;\n");
1901 fprintf (stream, " struct object *next;\n");
1902 fprintf (stream, "};\n");
1904 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1905 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1907 fprintf (stream, "static void reg_frame () {\n");
1908 fprintf (stream, "\tstatic struct object ob;\n");
1909 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1910 fprintf (stream, "\t}\n");
1912 fprintf (stream, "static void dereg_frame () {\n");
1913 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1914 fprintf (stream, "\t}\n");
1917 fprintf (stream, "void %s() {\n", initname);
1918 if (constructors.number > 0 || frames)
1920 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1921 write_list (stream, "\t\t", constructors.first);
1923 fprintf (stream, "\treg_frame,\n");
1924 fprintf (stream, "\t};\n");
1925 fprintf (stream, "\tentry_pt **p;\n");
1926 fprintf (stream, "\tif (count++ != 0) return;\n");
1927 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
1928 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1931 fprintf (stream, "\t++count;\n");
1932 fprintf (stream, "}\n");
1933 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1934 fprintf (stream, "void %s() {\n", fininame);
1935 if (destructors.number > 0 || frames)
1937 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1938 write_list (stream, "\t\t", destructors.first);
1940 fprintf (stream, "\tdereg_frame,\n");
1941 fprintf (stream, "\t};\n");
1942 fprintf (stream, "\tentry_pt **p;\n");
1943 fprintf (stream, "\tif (--count != 0) return;\n");
1944 fprintf (stream, "\tp = dtors;\n");
1945 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
1946 destructors.number + frames);
1948 fprintf (stream, "}\n");
1952 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
1953 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
1957 /* Write the constructor/destructor tables. */
1959 #ifndef LD_INIT_SWITCH
1961 write_c_file_glob (stream, name)
1963 const char *name ATTRIBUTE_UNUSED;
1965 /* Write the tables as C code */
1967 int frames = (frame_tables.number > 0);
1969 fprintf (stream, "typedef void entry_pt();\n\n");
1971 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1975 write_list_with_asm (stream, "extern void *", frame_tables.first);
1977 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1978 write_list (stream, "\t\t&", frame_tables.first);
1979 fprintf (stream, "\t0\n};\n");
1981 /* This must match what's in frame.h. */
1982 fprintf (stream, "struct object {\n");
1983 fprintf (stream, " void *pc_begin;\n");
1984 fprintf (stream, " void *pc_end;\n");
1985 fprintf (stream, " void *fde_begin;\n");
1986 fprintf (stream, " void *fde_array;\n");
1987 fprintf (stream, " __SIZE_TYPE__ count;\n");
1988 fprintf (stream, " struct object *next;\n");
1989 fprintf (stream, "};\n");
1991 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1992 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1994 fprintf (stream, "static void reg_frame () {\n");
1995 fprintf (stream, "\tstatic struct object ob;\n");
1996 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1997 fprintf (stream, "\t}\n");
1999 fprintf (stream, "static void dereg_frame () {\n");
2000 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
2001 fprintf (stream, "\t}\n");
2004 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
2005 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
2006 write_list (stream, "\t", constructors.first);
2008 fprintf (stream, "\treg_frame,\n");
2009 fprintf (stream, "\t0\n};\n\n");
2011 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2013 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2014 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2015 write_list (stream, "\t", destructors.first);
2017 fprintf (stream, "\tdereg_frame,\n");
2018 fprintf (stream, "\t0\n};\n\n");
2020 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2021 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2023 #endif /* ! LD_INIT_SWITCH */
2026 write_c_file (stream, name)
2030 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2031 #ifndef LD_INIT_SWITCH
2033 write_c_file_glob (stream, name);
2036 write_c_file_stat (stream, name);
2037 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2040 #ifdef COLLECT_EXPORT_LIST
2042 write_aix_file (stream, list)
2046 for (; list; list = list->next)
2048 fputs (list->name, stream);
2049 putc ('\n', stream);
2054 #ifdef OBJECT_FORMAT_NONE
2056 /* Generic version to scan the name list of the loaded program for
2057 the symbols g++ uses for static constructors and destructors.
2059 The constructor table begins at __CTOR_LIST__ and contains a count
2060 of the number of pointers (or -1 if the constructors are built in a
2061 separate section by the linker), followed by the pointers to the
2062 constructor functions, terminated with a null pointer. The
2063 destructor table has the same format, and begins at __DTOR_LIST__. */
2066 scan_prog_file (prog_name, which_pass)
2067 const char *prog_name;
2068 enum pass which_pass;
2070 void (*int_handler) PARAMS ((int));
2071 void (*quit_handler) PARAMS ((int));
2072 char *real_nm_argv[4];
2073 const char **nm_argv = (const char **) real_nm_argv;
2080 if (which_pass == PASS_SECOND)
2083 /* If we do not have an `nm', complain. */
2084 if (nm_file_name == 0)
2085 fatal ("cannot find `nm'");
2087 nm_argv[argc++] = nm_file_name;
2088 if (NM_FLAGS[0] != '\0')
2089 nm_argv[argc++] = NM_FLAGS;
2091 nm_argv[argc++] = prog_name;
2092 nm_argv[argc++] = (char *) 0;
2094 if (pipe (pipe_fd) < 0)
2095 fatal_perror ("pipe");
2097 inf = fdopen (pipe_fd[0], "r");
2098 if (inf == (FILE *) 0)
2099 fatal_perror ("fdopen");
2101 /* Trace if needed. */
2104 const char **p_argv;
2107 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2108 fprintf (stderr, " %s", str);
2110 fprintf (stderr, "\n");
2116 /* Spawn child nm on pipe */
2119 fatal_perror (VFORK_STRING);
2121 if (pid == 0) /* child context */
2124 if (dup2 (pipe_fd[1], 1) < 0)
2125 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2127 if (close (pipe_fd[0]) < 0)
2128 fatal_perror ("close %d", pipe_fd[0]);
2130 if (close (pipe_fd[1]) < 0)
2131 fatal_perror ("close %d", pipe_fd[1]);
2133 execv (nm_file_name, real_nm_argv);
2134 fatal_perror ("execvp %s", nm_file_name);
2137 /* Parent context from here on. */
2138 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2140 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2143 if (close (pipe_fd[1]) < 0)
2144 fatal_perror ("close %d", pipe_fd[1]);
2147 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2149 /* Read each line of nm output. */
2150 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2155 /* If it contains a constructor or destructor name, add the name
2156 to the appropriate list. */
2158 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2159 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2166 /* Find the end of the symbol name.
2167 Do not include `|', because Encore nm can tack that on the end. */
2168 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2174 switch (is_ctor_dtor (name))
2177 if (which_pass != PASS_LIB)
2178 add_to_list (&constructors, name);
2182 if (which_pass != PASS_LIB)
2183 add_to_list (&destructors, name);
2187 if (which_pass != PASS_LIB)
2188 fatal ("init function found in object %s", prog_name);
2189 #ifndef LD_INIT_SWITCH
2190 add_to_list (&constructors, name);
2195 if (which_pass != PASS_LIB)
2196 fatal ("fini function found in object %s", prog_name);
2197 #ifndef LD_FINI_SWITCH
2198 add_to_list (&destructors, name);
2203 if (which_pass != PASS_LIB)
2204 add_to_list (&frame_tables, name);
2207 default: /* not a constructor or destructor */
2212 fprintf (stderr, "\t%s\n", buf);
2216 fprintf (stderr, "\n");
2218 if (fclose (inf) != 0)
2219 fatal_perror ("fclose");
2221 do_wait (nm_file_name);
2223 signal (SIGINT, int_handler);
2225 signal (SIGQUIT, quit_handler);
2229 #if SUNOS4_SHARED_LIBRARIES
2231 /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2232 that the output file depends upon and their initialization/finalization
2233 routines, if any. */
2238 #include <sys/mman.h>
2239 #include <sys/param.h>
2241 #include <sys/dir.h>
2243 /* pointers to the object file */
2244 unsigned object; /* address of memory mapped file */
2245 unsigned objsize; /* size of memory mapped to file */
2246 char * code; /* pointer to code segment */
2247 char * data; /* pointer to data segment */
2248 struct nlist *symtab; /* pointer to symbol table */
2249 struct link_dynamic *ld;
2250 struct link_dynamic_2 *ld_2;
2251 struct head libraries;
2253 /* Map the file indicated by NAME into memory and store its address. */
2255 static void mapfile PARAMS ((const char *));
2263 if ((fp = open (name, O_RDONLY)) == -1)
2264 fatal ("unable to open file '%s'", name);
2265 if (fstat (fp, &s) == -1)
2266 fatal ("unable to stat file '%s'", name);
2268 objsize = s.st_size;
2269 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2271 if (object == (unsigned)-1)
2272 fatal ("unable to mmap file '%s'", name);
2277 /* Helpers for locatelib. */
2279 static const char *libname;
2281 static int libselect PARAMS ((struct direct *));
2287 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2290 /* If one file has an additional numeric extension past LIBNAME, then put
2291 that one first in the sort. If both files have additional numeric
2292 extensions, then put the one with the higher number first in the sort.
2294 We must verify that the extension is numeric, because Sun saves the
2295 original versions of patched libraries with a .FCS extension. Files with
2296 invalid extensions must go last in the sort, so that they will not be used. */
2297 static int libcompare PARAMS ((struct direct **, struct direct **));
2301 struct direct **d1, **d2;
2303 int i1, i2 = strlen (libname);
2304 char *e1 = (*d1)->d_name + i2;
2305 char *e2 = (*d2)->d_name + i2;
2307 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2308 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2312 i1 = strtol (e1, &e1, 10);
2313 i2 = strtol (e2, &e2, 10);
2320 /* It has a valid numeric extension, prefer this one. */
2321 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2323 /* It has a invalid numeric extension, must prefer the other one. */
2329 /* It has a valid numeric extension, prefer this one. */
2330 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2332 /* It has a invalid numeric extension, must prefer the other one. */
2340 /* Given the name NAME of a dynamic dependency, find its pathname and add
2341 it to the list of libraries. */
2342 static void locatelib PARAMS ((const char *));
2348 static const char **l;
2350 char buf[MAXPATHLEN];
2358 /* counting elements in array, need 1 extra for null */
2360 ld_rules = (char *) (ld_2->ld_rules + code);
2364 for (; *ld_rules != 0; ld_rules++)
2365 if (*ld_rules == ':')
2367 ld_rules = (char *) (ld_2->ld_rules + code);
2368 ldr = xstrdup (ld_rules);
2370 p = getenv ("LD_LIBRARY_PATH");
2375 for (q = p ; *q != 0; q++)
2380 l = (const char **) xmalloc ((cnt + 3) * sizeof (char *));
2385 for (; *ldr != 0; ldr++)
2395 for (; *q != 0; q++)
2402 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2405 *pp++ = "/usr/local/lib";
2409 for (pp = l; *pp != 0 ; pp++)
2411 struct direct **namelist;
2413 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2415 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2416 add_to_list (&libraries, buf);
2418 fprintf (stderr, "%s\n", buf);
2425 notice ("not found\n");
2427 fatal ("dynamic dependency %s not found", name);
2431 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2432 that it depends upon and any constructors or destructors they contain. */
2435 scan_libraries (prog_name)
2436 const char *prog_name;
2438 struct exec *header;
2440 struct link_object *lo;
2441 char buff[MAXPATHLEN];
2444 mapfile (prog_name);
2445 header = (struct exec *)object;
2446 if (N_BADMAG (*header))
2447 fatal ("bad magic number in file '%s'", prog_name);
2448 if (header->a_dynamic == 0)
2451 code = (char *) (N_TXTOFF (*header) + (long) header);
2452 data = (char *) (N_DATOFF (*header) + (long) header);
2453 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2455 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2458 ld = (struct link_dynamic *) (symtab->n_value + code);
2464 ld = (struct link_dynamic *) data;
2469 notice ("dynamic dependencies.\n");
2471 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2472 for (lo = (struct link_object *) ld_2->ld_need; lo;
2473 lo = (struct link_object *) lo->lo_next)
2476 lo = (struct link_object *) ((long) lo + code);
2477 name = (char *) (code + lo->lo_name);
2481 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2482 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2488 fprintf (stderr, "\t%s\n", name);
2489 add_to_list (&libraries, name);
2494 fprintf (stderr, "\n");
2496 /* now iterate through the library list adding their symbols to
2498 for (list = libraries.first; list; list = list->next)
2499 scan_prog_file (list->name, PASS_LIB);
2502 #else /* SUNOS4_SHARED_LIBRARIES */
2505 /* Use the List Dynamic Dependencies program to find shared libraries that
2506 the output file depends upon and their initialization/finalization
2507 routines, if any. */
2510 scan_libraries (prog_name)
2511 const char *prog_name;
2513 static struct head libraries; /* list of shared libraries found */
2515 void (*int_handler) PARAMS ((int));
2516 void (*quit_handler) PARAMS ((int));
2517 char *real_ldd_argv[4];
2518 const char **ldd_argv = (const char **) real_ldd_argv;
2525 /* If we do not have an `ldd', complain. */
2526 if (ldd_file_name == 0)
2528 error ("cannot find `ldd'");
2532 ldd_argv[argc++] = ldd_file_name;
2533 ldd_argv[argc++] = prog_name;
2534 ldd_argv[argc++] = (char *) 0;
2536 if (pipe (pipe_fd) < 0)
2537 fatal_perror ("pipe");
2539 inf = fdopen (pipe_fd[0], "r");
2540 if (inf == (FILE *) 0)
2541 fatal_perror ("fdopen");
2543 /* Trace if needed. */
2546 const char **p_argv;
2549 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2550 fprintf (stderr, " %s", str);
2552 fprintf (stderr, "\n");
2558 /* Spawn child ldd on pipe */
2561 fatal_perror (VFORK_STRING);
2563 if (pid == 0) /* child context */
2566 if (dup2 (pipe_fd[1], 1) < 0)
2567 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2569 if (close (pipe_fd[0]) < 0)
2570 fatal_perror ("close %d", pipe_fd[0]);
2572 if (close (pipe_fd[1]) < 0)
2573 fatal_perror ("close %d", pipe_fd[1]);
2575 execv (ldd_file_name, real_ldd_argv);
2576 fatal_perror ("execv %s", ldd_file_name);
2579 /* Parent context from here on. */
2580 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2582 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2585 if (close (pipe_fd[1]) < 0)
2586 fatal_perror ("close %d", pipe_fd[1]);
2589 notice ("\nldd output with constructors/destructors.\n");
2591 /* Read each line of ldd output. */
2592 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2595 char *name, *end, *p = buf;
2597 /* Extract names of libraries and add to list. */
2598 PARSE_LDD_OUTPUT (p);
2603 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2604 fatal ("dynamic dependency %s not found", buf);
2606 /* Find the end of the symbol name. */
2608 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2613 if (access (name, R_OK) == 0)
2614 add_to_list (&libraries, name);
2616 fatal ("unable to open dynamic dependency '%s'", buf);
2619 fprintf (stderr, "\t%s\n", buf);
2622 fprintf (stderr, "\n");
2624 if (fclose (inf) != 0)
2625 fatal_perror ("fclose");
2627 do_wait (ldd_file_name);
2629 signal (SIGINT, int_handler);
2631 signal (SIGQUIT, quit_handler);
2634 /* now iterate through the library list adding their symbols to
2636 for (list = libraries.first; list; list = list->next)
2637 scan_prog_file (list->name, PASS_LIB);
2640 #endif /* LDD_SUFFIX */
2641 #endif /* SUNOS4_SHARED_LIBRARIES */
2643 #endif /* OBJECT_FORMAT_NONE */
2647 * COFF specific stuff.
2650 #ifdef OBJECT_FORMAT_COFF
2652 #if defined(EXTENDED_COFF)
2654 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2655 # define GCC_SYMENT SYMR
2656 # define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal)
2657 # define GCC_SYMINC(X) (1)
2658 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2659 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2663 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2664 # define GCC_SYMENT SYMENT
2665 # define GCC_OK_SYMBOL(X) \
2666 (((X).n_sclass == C_EXT) && \
2667 ((X).n_scnum > N_UNDEF) && \
2669 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
2670 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
2671 # define GCC_UNDEF_SYMBOL(X) \
2672 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
2673 # define GCC_SYMINC(X) ((X).n_numaux+1)
2674 # define GCC_SYMZERO(X) 0
2676 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */
2678 # define GCC_CHECK_HDR(X) \
2679 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2680 || (HEADER (X).f_magic == 0767 && aix64_flag))
2682 # define GCC_CHECK_HDR(X) \
2683 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2684 || (HEADER (X).f_magic == 0757 && aix64_flag))
2689 extern char *ldgetname ();
2691 /* COFF version to scan the name list of the loaded program for
2692 the symbols g++ uses for static constructors and destructors.
2694 The constructor table begins at __CTOR_LIST__ and contains a count
2695 of the number of pointers (or -1 if the constructors are built in a
2696 separate section by the linker), followed by the pointers to the
2697 constructor functions, terminated with a null pointer. The
2698 destructor table has the same format, and begins at __DTOR_LIST__. */
2701 scan_prog_file (prog_name, which_pass)
2702 const char *prog_name;
2703 enum pass which_pass;
2705 LDFILE *ldptr = NULL;
2706 int sym_index, sym_count;
2709 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
2712 #ifdef COLLECT_EXPORT_LIST
2713 /* We do not need scanning for some standard C libraries. */
2714 if (which_pass == PASS_FIRST && ignore_library (prog_name))
2717 /* On AIX we have a loop, because there is not much difference
2718 between an object and an archive. This trick allows us to
2719 eliminate scan_libraries() function. */
2723 /* Some platforms (e.g. OSF4) declare ldopen as taking a
2724 non-const char * filename parameter, even though it will not
2725 modify that string. So we must cast away const-ness here,
2726 which will cause -Wcast-qual to burp. */
2727 if ((ldptr = ldopen ((char *)prog_name, ldptr)) != NULL)
2729 if (! MY_ISCOFF (HEADER (ldptr).f_magic))
2730 fatal ("%s: not a COFF file", prog_name);
2732 if (GCC_CHECK_HDR (ldptr))
2734 sym_count = GCC_SYMBOLS (ldptr);
2735 sym_index = GCC_SYMZERO (ldptr);
2737 #ifdef COLLECT_EXPORT_LIST
2738 /* Is current archive member a shared object? */
2739 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2742 while (sym_index < sym_count)
2746 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2748 sym_index += GCC_SYMINC (symbol);
2750 if (GCC_OK_SYMBOL (symbol))
2754 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2755 continue; /* should never happen */
2757 #ifdef XCOFF_DEBUGGING_INFO
2758 /* All AIX function names have a duplicate entry
2759 beginning with a dot. */
2764 switch (is_ctor_dtor (name))
2768 add_to_list (&constructors, name);
2769 #ifdef COLLECT_EXPORT_LIST
2770 if (which_pass == PASS_OBJ)
2771 add_to_list (&exports, name);
2777 add_to_list (&destructors, name);
2778 #ifdef COLLECT_EXPORT_LIST
2779 if (which_pass == PASS_OBJ)
2780 add_to_list (&exports, name);
2784 #ifdef COLLECT_EXPORT_LIST
2786 #ifndef LD_INIT_SWITCH
2788 add_to_list (&constructors, name);
2793 #ifndef LD_INIT_SWITCH
2795 add_to_list (&destructors, name);
2802 add_to_list (&frame_tables, name);
2803 #ifdef COLLECT_EXPORT_LIST
2804 if (which_pass == PASS_OBJ)
2805 add_to_list (&exports, name);
2809 default: /* not a constructor or destructor */
2810 #ifdef COLLECT_EXPORT_LIST
2811 /* If we are building a shared object on AIX we need
2812 to explicitly export all global symbols. */
2815 if (which_pass == PASS_OBJ && (! export_flag))
2816 add_to_list (&exports, name);
2823 #if !defined(EXTENDED_COFF)
2824 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2825 symbol.n_scnum, symbol.n_sclass,
2826 (symbol.n_type ? "0" : ""), symbol.n_type,
2830 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
2831 symbol.iss, (long) symbol.value, symbol.index, name);
2836 #ifdef COLLECT_EXPORT_LIST
2839 /* If archive contains both 32-bit and 64-bit objects,
2840 we want to skip objects in other mode so mismatch normal. */
2842 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
2843 prog_name, HEADER (ldptr).f_magic, aix64_flag);
2849 fatal ("%s: cannot open as COFF file", prog_name);
2851 #ifdef COLLECT_EXPORT_LIST
2852 /* On AIX loop continues while there are more members in archive. */
2854 while (ldclose (ldptr) == FAILURE);
2856 /* Otherwise we simply close ldptr. */
2857 (void) ldclose(ldptr);
2862 #ifdef COLLECT_EXPORT_LIST
2863 /* Given a library name without "lib" prefix, this function
2864 returns a full library name including a path. */
2866 resolve_lib_name (name)
2872 for (i = 0; libpaths[i]; i++)
2873 if (libpaths[i]->max_len > l)
2874 l = libpaths[i]->max_len;
2876 lib_buf = xmalloc (l + strlen(name) + 10);
2878 for (i = 0; libpaths[i]; i++)
2880 struct prefix_list *list = libpaths[i]->plist;
2881 for (; list; list = list->next)
2883 /* The following lines are needed because path_prefix list
2884 may contain directories both with trailing '/' and
2887 if (list->prefix[strlen(list->prefix)-1] != '/')
2889 for (j = 0; libexts[j]; j++)
2891 sprintf (lib_buf, "%s%slib%s.%s",
2892 list->prefix, p, name, libexts[j]);
2893 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
2894 if (file_exists (lib_buf))
2896 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
2903 fprintf (stderr, "not found\n");
2905 fatal ("Library lib%s not found", name);
2909 /* Array of standard AIX libraries which should not
2910 be scanned for ctors/dtors. */
2911 static const char *const aix_std_libs[] = {
2919 "/usr/lib/libc_r.a",
2920 "/usr/lib/libm_r.a",
2921 "/usr/lib/threads/libc.a",
2922 "/usr/ccs/lib/libc.a",
2923 "/usr/ccs/lib/libm.a",
2924 "/usr/ccs/lib/libc_r.a",
2925 "/usr/ccs/lib/libm_r.a",
2929 /* This function checks the filename and returns 1
2930 if this name matches the location of a standard AIX library. */
2932 ignore_library (name)
2935 const char *const *p = &aix_std_libs[0];
2936 while (*p++ != NULL)
2937 if (! strcmp (name, *p)) return 1;
2942 #endif /* OBJECT_FORMAT_COFF */
2946 * OSF/rose specific stuff.
2949 #ifdef OBJECT_FORMAT_ROSE
2951 /* Union of the various load commands */
2953 typedef union load_union
2955 ldc_header_t hdr; /* common header */
2956 load_cmd_map_command_t map; /* map indexing other load cmds */
2957 interpreter_command_t iprtr; /* interpreter pathname */
2958 strings_command_t str; /* load commands strings section */
2959 region_command_t region; /* region load command */
2960 reloc_command_t reloc; /* relocation section */
2961 package_command_t pkg; /* package load command */
2962 symbols_command_t sym; /* symbol sections */
2963 entry_command_t ent; /* program start section */
2964 gen_info_command_t info; /* object information */
2965 func_table_command_t func; /* function constructors/destructors */
2968 /* Structure to point to load command and data section in memory. */
2970 typedef struct load_all
2972 load_union_t *load; /* load command */
2973 char *section; /* pointer to section */
2976 /* Structure to contain information about a file mapped into memory. */
2980 char *start; /* start of map */
2981 char *name; /* filename */
2982 long size; /* size of the file */
2983 long rounded_size; /* size rounded to page boundary */
2984 int fd; /* file descriptor */
2985 int rw; /* != 0 if opened read/write */
2986 int use_mmap; /* != 0 if mmap'ed */
2989 extern int decode_mach_o_hdr ();
2990 extern int encode_mach_o_hdr ();
2992 static void add_func_table PARAMS ((mo_header_t *, load_all_t *,
2993 symbol_info_t *, int));
2994 static void print_header PARAMS ((mo_header_t *));
2995 static void print_load_command PARAMS ((load_union_t *, size_t, int));
2996 static void bad_header PARAMS ((int));
2997 static struct file_info *read_file PARAMS ((const char *, int, int));
2998 static void end_file PARAMS ((struct file_info *));
3000 /* OSF/rose specific version to scan the name list of the loaded
3001 program for the symbols g++ uses for static constructors and
3004 The constructor table begins at __CTOR_LIST__ and contains a count
3005 of the number of pointers (or -1 if the constructors are built in a
3006 separate section by the linker), followed by the pointers to the
3007 constructor functions, terminated with a null pointer. The
3008 destructor table has the same format, and begins at __DTOR_LIST__. */
3011 scan_prog_file (prog_name, which_pass)
3012 const char *prog_name;
3013 enum pass which_pass;
3017 load_all_t *load_array;
3018 load_all_t *load_end;
3019 load_all_t *load_cmd;
3020 int symbol_load_cmds;
3026 struct file_info *obj_file;
3028 mo_lcid_t cmd_strings = -1;
3029 symbol_info_t *main_sym = 0;
3030 int rw = (which_pass != PASS_FIRST);
3032 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3034 fatal_perror ("open %s", prog_name);
3036 obj_file = read_file (prog_name, prog_fd, rw);
3037 obj = obj_file->start;
3039 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3040 if (status != MO_HDR_CONV_SUCCESS)
3041 bad_header (status);
3044 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3045 since the hardware will automatically swap bytes for us on loading little endian
3048 #ifndef CROSS_COMPILE
3049 if (hdr.moh_magic != MOH_MAGIC_MSB
3050 || hdr.moh_header_version != MOH_HEADER_VERSION
3051 || hdr.moh_byte_order != OUR_BYTE_ORDER
3052 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3053 || hdr.moh_cpu_type != OUR_CPU_TYPE
3054 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3055 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3057 fatal ("incompatibilities between object file & expected values");
3062 print_header (&hdr);
3064 offset = hdr.moh_first_cmd_off;
3065 load_end = load_array
3066 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3068 /* Build array of load commands, calculating the offsets */
3069 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3071 load_union_t *load_hdr; /* load command header */
3073 load_cmd = load_end++;
3074 load_hdr = (load_union_t *) (obj + offset);
3076 /* If modifying the program file, copy the header. */
3079 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3080 memcpy ((char *)ptr, (char *)load_hdr, load_hdr->hdr.ldci_cmd_size);
3083 /* null out old command map, because we will rewrite at the end. */
3084 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3086 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3087 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3091 load_cmd->load = load_hdr;
3092 if (load_hdr->hdr.ldci_section_off > 0)
3093 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3096 print_load_command (load_hdr, offset, i);
3098 offset += load_hdr->hdr.ldci_cmd_size;
3101 /* If the last command is the load command map and is not undefined,
3102 decrement the count of load commands. */
3103 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3106 hdr.moh_n_load_cmds--;
3109 /* Go through and process each symbol table section. */
3110 symbol_load_cmds = 0;
3111 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3113 load_union_t *load_hdr = load_cmd->load;
3115 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3121 const char *kind = "unknown";
3123 switch (load_hdr->sym.symc_kind)
3125 case SYMC_IMPORTS: kind = "imports"; break;
3126 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3127 case SYMC_STABS: kind = "stabs"; break;
3130 notice ("\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3131 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3134 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3137 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3138 if (str_sect == (char *) 0)
3139 fatal ("string section missing");
3141 if (load_cmd->section == (char *) 0)
3142 fatal ("section pointer missing");
3144 num_syms = load_hdr->sym.symc_nentries;
3145 for (i = 0; i < num_syms; i++)
3147 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3148 char *name = sym->si_name.symbol_name + str_sect;
3155 char *n = name + strlen (name) - strlen (NAME__MAIN);
3157 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3167 switch (is_ctor_dtor (name))
3170 add_to_list (&constructors, name);
3174 add_to_list (&destructors, name);
3177 default: /* not a constructor or destructor */
3183 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3184 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3189 if (symbol_load_cmds == 0)
3190 fatal ("no symbol table found");
3192 /* Update the program file now, rewrite header and load commands. At present,
3193 we assume that there is enough space after the last load command to insert
3194 one more. Since the first section written out is page aligned, and the
3195 number of load commands is small, this is ok for the present. */
3199 load_union_t *load_map;
3202 if (cmd_strings == -1)
3203 fatal ("no cmd_strings found");
3205 /* Add __main to initializer list.
3206 If we are building a program instead of a shared library, do not
3207 do anything, since in the current version, you cannot do mallocs
3208 and such in the constructors. */
3210 if (main_sym != (symbol_info_t *) 0
3211 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3212 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3215 notice ("\nUpdating header and load commands.\n\n");
3217 hdr.moh_n_load_cmds++;
3218 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3220 /* Create new load command map. */
3222 notice ("load command map, %d cmds, new size %ld.\n",
3223 (int) hdr.moh_n_load_cmds, (long) size);
3225 load_map = (load_union_t *) xcalloc (1, size);
3226 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3227 load_map->map.ldc_header.ldci_cmd_size = size;
3228 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3229 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3230 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3232 offset = hdr.moh_first_cmd_off;
3233 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3235 load_map->map.lcm_map[i] = offset;
3236 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3237 hdr.moh_load_map_cmd_off = offset;
3239 offset += load_array[i].load->hdr.ldci_cmd_size;
3242 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3245 print_header (&hdr);
3248 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3249 if (status != MO_HDR_CONV_SUCCESS)
3250 bad_header (status);
3253 notice ("writing load commands.\n\n");
3255 /* Write load commands */
3256 offset = hdr.moh_first_cmd_off;
3257 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3259 load_union_t *load_hdr = load_array[i].load;
3260 size_t size = load_hdr->hdr.ldci_cmd_size;
3263 print_load_command (load_hdr, offset, i);
3265 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3270 end_file (obj_file);
3272 if (close (prog_fd))
3273 fatal_perror ("close %s", prog_name);
3276 fprintf (stderr, "\n");
3280 /* Add a function table to the load commands to call a function
3281 on initiation or termination of the process. */
3284 add_func_table (hdr_p, load_array, sym, type)
3285 mo_header_t *hdr_p; /* pointer to global header */
3286 load_all_t *load_array; /* array of ptrs to load cmds */
3287 symbol_info_t *sym; /* pointer to symbol entry */
3288 int type; /* fntc_type value */
3290 /* Add a new load command. */
3291 int num_cmds = ++hdr_p->moh_n_load_cmds;
3292 int load_index = num_cmds - 1;
3293 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3294 load_union_t *ptr = xcalloc (1, size);
3295 load_all_t *load_cmd;
3298 /* Set the unresolved address bit in the header to force the loader to be
3299 used, since kernel exec does not call the initialization functions. */
3300 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3302 load_cmd = &load_array[load_index];
3303 load_cmd->load = ptr;
3304 load_cmd->section = (char *) 0;
3306 /* Fill in func table load command. */
3307 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3308 ptr->func.ldc_header.ldci_cmd_size = size;
3309 ptr->func.ldc_header.ldci_section_off = 0;
3310 ptr->func.ldc_header.ldci_section_len = 0;
3311 ptr->func.fntc_type = type;
3312 ptr->func.fntc_nentries = 1;
3314 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3315 /* Is the symbol already expressed as (region, offset)? */
3316 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3318 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3319 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3322 /* If not, figure out which region it's in. */
3325 mo_vm_addr_t addr = sym->si_value.abs_val;
3328 for (i = 0; i < load_index; i++)
3330 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3332 region_command_t *region_ptr = &load_array[i].load->region;
3334 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3335 && addr >= region_ptr->regc_addr.vm_addr
3336 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3338 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3339 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3347 fatal ("could not convert 0x%l.8x into a region", addr);
3351 notice ("%s function, region %d, offset = %ld (0x%.8lx)\n",
3352 type == FNTC_INITIALIZATION ? "init" : "term",
3353 (int) ptr->func.fntc_entry_loc[i].adr_lcid,
3354 (long) ptr->func.fntc_entry_loc[i].adr_sctoff,
3355 (long) ptr->func.fntc_entry_loc[i].adr_sctoff);
3360 /* Print the global header for an OSF/rose object. */
3363 print_header (hdr_ptr)
3364 mo_header_t *hdr_ptr;
3366 fprintf (stderr, "\nglobal header:\n");
3367 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3368 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3369 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3370 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3371 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3372 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3373 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3374 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3375 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3376 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3377 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3378 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3379 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3380 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3381 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3383 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3384 fprintf (stderr, ", relocatable");
3386 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3387 fprintf (stderr, ", linkable");
3389 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3390 fprintf (stderr, ", execable");
3392 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3393 fprintf (stderr, ", executable");
3395 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3396 fprintf (stderr, ", unresolved");
3398 fprintf (stderr, "\n\n");
3403 /* Print a short summary of a load command. */
3406 print_load_command (load_hdr, offset, number)
3407 load_union_t *load_hdr;
3411 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3412 const char *type_str = (char *) 0;
3416 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3417 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3418 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3419 case LDC_STRINGS: type_str = "STRINGS"; break;
3420 case LDC_REGION: type_str = "REGION"; break;
3421 case LDC_RELOC: type_str = "RELOC"; break;
3422 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3423 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3424 case LDC_ENTRY: type_str = "ENTRY"; break;
3425 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3426 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3430 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3432 (long) load_hdr->hdr.ldci_cmd_size,
3434 (long) load_hdr->hdr.ldci_section_off,
3435 (long) load_hdr->hdr.ldci_section_len);
3437 if (type_str == (char *) 0)
3438 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3440 else if (type != LDC_REGION)
3441 fprintf (stderr, ", ty: %s\n", type_str);
3445 const char *region = "";
3446 switch (load_hdr->region.regc_usage_type)
3448 case REG_TEXT_T: region = ", .text"; break;
3449 case REG_DATA_T: region = ", .data"; break;
3450 case REG_BSS_T: region = ", .bss"; break;
3451 case REG_GLUE_T: region = ", .glue"; break;
3452 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3453 case REG_RDATA_T: region = ", .rdata"; break;
3454 case REG_SDATA_T: region = ", .sdata"; break;
3455 case REG_SBSS_T: region = ", .sbss"; break;
3459 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3461 (long) load_hdr->region.regc_vm_addr,
3462 (long) load_hdr->region.regc_vm_size,
3470 /* Fatal error when {en,de}code_mach_o_header fails. */
3478 case MO_ERROR_BAD_MAGIC: fatal ("bad magic number");
3479 case MO_ERROR_BAD_HDR_VERS: fatal ("bad header version");
3480 case MO_ERROR_BAD_RAW_HDR_VERS: fatal ("bad raw header version");
3481 case MO_ERROR_BUF2SML: fatal ("raw header buffer too small");
3482 case MO_ERROR_OLD_RAW_HDR_FILE: fatal ("old raw header file");
3483 case MO_ERROR_UNSUPPORTED_VERS: fatal ("unsupported version");
3485 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3490 /* Read a file into a memory buffer. */
3492 static struct file_info *
3493 read_file (name, fd, rw)
3494 const char *name; /* filename */
3495 int fd; /* file descriptor */
3496 int rw; /* read/write */
3498 struct stat stat_pkt;
3499 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3501 static int page_size;
3504 if (fstat (fd, &stat_pkt) < 0)
3505 fatal_perror ("fstat %s", name);
3508 p->size = stat_pkt.st_size;
3509 p->rounded_size = stat_pkt.st_size;
3515 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3518 page_size = sysconf (_SC_PAGE_SIZE);
3520 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3521 p->start = mmap ((caddr_t) 0,
3522 (rw) ? p->rounded_size : p->size,
3523 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3524 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3528 if (p->start != (char *) 0 && p->start != (char *) -1)
3532 #endif /* USE_MMAP */
3537 fprintf (stderr, "read %s\n", name);
3540 p->start = xmalloc (p->size);
3541 if (lseek (fd, 0L, SEEK_SET) < 0)
3542 fatal_perror ("lseek %s 0", name);
3544 len = read (fd, p->start, p->size);
3546 fatal_perror ("read %s", name);
3549 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3555 /* Do anything necessary to write a file back from memory. */
3559 struct file_info *ptr; /* file information block */
3567 fprintf (stderr, "msync %s\n", ptr->name);
3569 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3570 fatal_perror ("msync %s", ptr->name);
3574 fprintf (stderr, "munmap %s\n", ptr->name);
3576 if (munmap (ptr->start, ptr->size))
3577 fatal_perror ("munmap %s", ptr->name);
3580 #endif /* USE_MMAP */
3587 fprintf (stderr, "write %s\n", ptr->name);
3589 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3590 fatal_perror ("lseek %s 0", ptr->name);
3592 len = write (ptr->fd, ptr->start, ptr->size);
3594 fatal_perror ("write %s", ptr->name);
3596 if (len != ptr->size)
3597 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3606 #endif /* OBJECT_FORMAT_ROSE */