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 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 GNU CC.
11 GNU CC is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2, or (at your option)
16 GNU CC is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with GNU CC; see the file COPYING. If not, write to
23 the Free Software Foundation, 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
27 /* Build tables of static constructors and destructors and run ld. */
33 #ifdef vfork /* Autoconf may define this to fork for us. */
34 # define VFORK_STRING "fork"
36 # define VFORK_STRING "vfork"
42 #define vfork() (decc$$alloc_vfork_blocks() >= 0 ? \
43 lib$get_current_invo_context(decc$$get_vfork_jmpbuf()) : -1)
46 #ifndef LIBRARY_PATH_ENV
47 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
58 /* Obstack allocation and deallocation routines. */
59 #define obstack_chunk_alloc xmalloc
60 #define obstack_chunk_free free
62 /* On certain systems, we have code that works by scanning the object file
63 directly. But this code uses system-specific header files and library
64 functions, so turn it off in a cross-compiler. Likewise, the names of
65 the utilities are not correct for a cross-compiler; we have to hope that
66 cross-versions are in the proper directories. */
69 #undef SUNOS4_SHARED_LIBRARIES
70 #undef OBJECT_FORMAT_COFF
71 #undef OBJECT_FORMAT_ROSE
73 #undef REAL_LD_FILE_NAME
74 #undef REAL_NM_FILE_NAME
75 #undef REAL_STRIP_FILE_NAME
78 /* If we cannot use a special method, use the ordinary one:
79 run nm to find what symbols are present.
80 In a cross-compiler, this means you need a cross nm,
81 but that is not quite as unpleasant as special headers. */
83 #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
84 #define OBJECT_FORMAT_NONE
87 #ifdef OBJECT_FORMAT_COFF
96 /* Many versions of ldfcn.h define these. */
104 /* Some systems have an ISCOFF macro, but others do not. In some cases
105 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
106 that either do not have an ISCOFF macro in /usr/include or for those
107 where it is wrong. */
110 #define MY_ISCOFF(X) ISCOFF (X)
113 #endif /* OBJECT_FORMAT_COFF */
115 #ifdef OBJECT_FORMAT_ROSE
122 #include <sys/mman.h>
126 #include <mach_o_format.h>
127 #include <mach_o_header.h>
128 #include <mach_o_vals.h>
129 #include <mach_o_types.h>
131 #endif /* OBJECT_FORMAT_ROSE */
133 #ifdef OBJECT_FORMAT_NONE
135 /* Default flags to pass to nm. */
137 #define NM_FLAGS "-n"
140 #endif /* OBJECT_FORMAT_NONE */
142 /* Some systems use __main in a way incompatible with its use in gcc, in these
143 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
144 give the same symbol without quotes for an alternative entry point. You
145 must define both, or neither. */
147 #define NAME__MAIN "__main"
148 #define SYMBOL__MAIN __main
151 /* This must match tree.h. */
152 #define DEFAULT_INIT_PRIORITY 65535
154 #if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES
155 #define SCAN_LIBRARIES
159 int do_collecting = 1;
161 int do_collecting = 0;
164 /* Linked lists of constructor and destructor names. */
180 /* Enumeration giving which pass this is for scanning the program file. */
183 PASS_FIRST, /* without constructors */
184 PASS_OBJ, /* individual objects */
185 PASS_LIB, /* looking for shared libraries */
186 PASS_SECOND /* with constructors linked in */
189 int vflag; /* true if -v */
190 static int rflag; /* true if -r */
191 static int strip_flag; /* true if -s */
192 #ifdef COLLECT_EXPORT_LIST
193 static int export_flag; /* true if -bE */
194 static int aix64_flag; /* true if -b64 */
197 int debug; /* true if -debug */
199 static int shared_obj; /* true if -shared */
201 static const char *c_file; /* <xxx>.c for constructor/destructor list. */
202 static const char *o_file; /* <xxx>.o for constructor/destructor list. */
203 #ifdef COLLECT_EXPORT_LIST
204 static const char *export_file; /* <xxx>.x for AIX export list. */
206 const char *ldout; /* File for ld errors. */
207 static const char *output_file; /* Output file for ld. */
208 static const char *nm_file_name; /* pathname of nm */
210 static const char *ldd_file_name; /* pathname of ldd (or equivalent) */
212 static const char *strip_file_name; /* pathname of strip */
213 const char *c_file_name; /* pathname of gcc */
214 static char *initname, *fininame; /* names of init and fini funcs */
216 static struct head constructors; /* list of constructors found */
217 static struct head destructors; /* list of destructors found */
218 #ifdef COLLECT_EXPORT_LIST
219 static struct head exports; /* list of exported symbols */
221 static struct head frame_tables; /* list of frame unwind info tables */
223 struct obstack temporary_obstack;
224 struct obstack permanent_obstack;
225 char * temporary_firstobj;
227 /* Holds the return value of pexecute. */
230 /* Defined in the automatically-generated underscore.c. */
231 extern int prepends_underscore;
233 #ifndef GET_ENV_PATH_LIST
234 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
237 /* Structure to hold all the directories in which to search for files to
242 const char *prefix; /* String to prepend to the path. */
243 struct prefix_list *next; /* Next in linked list. */
248 struct prefix_list *plist; /* List of prefixes to try */
249 int max_len; /* Max length of a prefix in PLIST */
250 const char *name; /* Name of this list (used in config stuff) */
253 #ifdef COLLECT_EXPORT_LIST
254 /* Lists to keep libraries to be scanned for global constructors/destructors. */
255 static struct head libs; /* list of libraries */
256 static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */
257 static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */
258 static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs,
259 &libpath_lib_dirs, NULL};
260 static const char *libexts[3] = {"a", "so", NULL}; /* possible library extentions */
263 static void handler PARAMS ((int));
264 static int is_ctor_dtor PARAMS ((const char *));
265 static char *find_a_file PARAMS ((struct path_prefix *, const char *));
266 static void add_prefix PARAMS ((struct path_prefix *, const char *));
267 static void prefix_from_env PARAMS ((const char *, struct path_prefix *));
268 static void prefix_from_string PARAMS ((const char *, struct path_prefix *));
269 static void do_wait PARAMS ((const char *));
270 static void fork_execute PARAMS ((const char *, char **));
271 static void maybe_unlink PARAMS ((const char *));
272 static void add_to_list PARAMS ((struct head *, const char *));
273 static int extract_init_priority PARAMS ((const char *));
274 static void sort_ids PARAMS ((struct head *));
275 static void write_list PARAMS ((FILE *, const char *, struct id *));
276 #ifdef COLLECT_EXPORT_LIST
277 static void dump_list PARAMS ((FILE *, const char *, struct id *));
280 static void dump_prefix_list PARAMS ((FILE *, const char *, struct prefix_list *));
282 static void write_list_with_asm PARAMS ((FILE *, const char *, struct id *));
283 static void write_c_file PARAMS ((FILE *, const char *));
284 static void write_c_file_stat PARAMS ((FILE *, const char *));
285 #ifndef LD_INIT_SWITCH
286 static void write_c_file_glob PARAMS ((FILE *, const char *));
288 static void scan_prog_file PARAMS ((const char *, enum pass));
289 #ifdef SCAN_LIBRARIES
290 static void scan_libraries PARAMS ((const char *));
292 #ifdef COLLECT_EXPORT_LIST
293 static int is_in_list PARAMS ((const char *, struct id *));
294 static void write_aix_file PARAMS ((FILE *, struct id *));
295 static char *resolve_lib_name PARAMS ((const char *));
296 static int ignore_library PARAMS ((const char *));
298 static char *extract_string PARAMS ((const char **));
313 while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
316 close (fdtmp[--fdx]);
322 /* Delete tempfiles and exit function. */
325 collect_exit (status)
328 if (c_file != 0 && c_file[0])
329 maybe_unlink (c_file);
331 if (o_file != 0 && o_file[0])
332 maybe_unlink (o_file);
334 #ifdef COLLECT_EXPORT_LIST
335 if (export_file != 0 && export_file[0])
336 maybe_unlink (export_file);
339 if (ldout != 0 && ldout[0])
342 maybe_unlink (ldout);
345 if (status != 0 && output_file != 0 && output_file[0])
346 maybe_unlink (output_file);
352 /* Notify user of a non-error. */
354 notice VPARAMS ((const char *msgid, ...))
356 #ifndef ANSI_PROTOTYPES
361 VA_START (ap, msgid);
363 #ifndef ANSI_PROTOTYPES
364 msgid = va_arg (ap, const char *);
367 vfprintf (stderr, _(msgid), ap);
371 /* Die when sys call fails. */
374 fatal_perror VPARAMS ((const char * msgid, ...))
376 #ifndef ANSI_PROTOTYPES
382 VA_START (ap, msgid);
384 #ifndef ANSI_PROTOTYPES
385 msgid = va_arg (ap, const char *);
388 fprintf (stderr, "collect2: ");
389 vfprintf (stderr, _(msgid), ap);
390 fprintf (stderr, ": %s\n", xstrerror (e));
393 collect_exit (FATAL_EXIT_CODE);
399 fatal VPARAMS ((const char * msgid, ...))
401 #ifndef ANSI_PROTOTYPES
406 VA_START (ap, msgid);
408 #ifndef ANSI_PROTOTYPES
409 msgid = va_arg (ap, const char *);
412 fprintf (stderr, "collect2: ");
413 vfprintf (stderr, _(msgid), ap);
414 fprintf (stderr, "\n");
417 collect_exit (FATAL_EXIT_CODE);
420 /* Write error message. */
423 error VPARAMS ((const char * msgid, ...))
425 #ifndef ANSI_PROTOTYPES
430 VA_START (ap, msgid);
432 #ifndef ANSI_PROTOTYPES
433 msgid = va_arg (ap, const char *);
436 fprintf (stderr, "collect2: ");
437 vfprintf (stderr, _(msgid), ap);
438 fprintf (stderr, "\n");
442 /* In case obstack is linked in, and abort is defined to fancy_abort,
443 provide a default entry. */
448 fatal ("internal error");
455 if (c_file != 0 && c_file[0])
456 maybe_unlink (c_file);
458 if (o_file != 0 && o_file[0])
459 maybe_unlink (o_file);
461 if (ldout != 0 && ldout[0])
462 maybe_unlink (ldout);
464 #ifdef COLLECT_EXPORT_LIST
465 if (export_file != 0 && export_file[0])
466 maybe_unlink (export_file);
469 signal (signo, SIG_DFL);
470 kill (getpid (), signo);
478 return access (name, R_OK) == 0;
481 /* Parse a reasonable subset of shell quoting syntax. */
498 obstack_1grow (&temporary_obstack, c);
499 else if (! inside && c == ' ')
501 else if (! inside && c == '\\')
506 obstack_1grow (&temporary_obstack, c);
509 obstack_1grow (&temporary_obstack, '\0');
511 return obstack_finish (&temporary_obstack);
518 FILE *stream = fopen (name, "r");
519 int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
526 while (c = getc (stream),
527 c != EOF && (ISALNUM (c) || c == '_' || c == '$' || c == '.'))
528 obstack_1grow (&temporary_obstack, c);
529 if (obstack_object_size (&temporary_obstack) > 0)
531 const char *word, *p;
533 obstack_1grow (&temporary_obstack, '\0');
534 word = obstack_finish (&temporary_obstack);
537 ++word, putc ('.', stderr);
539 if (*p == '_' && prepends_underscore)
545 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
550 fputs (result, stderr);
552 diff = strlen (word) - strlen (result);
554 --diff, putc (' ', stderr);
555 while (diff < 0 && c == ' ')
556 ++diff, c = getc (stream);
561 fputs (word, stderr);
564 obstack_free (&temporary_obstack, temporary_firstobj);
573 /* Decide whether the given symbol is: a constructor (1), a destructor
574 (2), a routine in a shared object that calls all the constructors
575 (3) or destructors (4), a DWARF exception-handling table (5), or
576 nothing special (0). */
582 struct names { const char *name; int len; int ret; int two_underscores; };
584 register struct names *p;
586 register const char *orig_s = s;
588 static struct names special[] = {
589 #ifdef NO_DOLLAR_IN_LABEL
590 #ifdef NO_DOT_IN_LABEL
591 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
592 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
593 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
595 { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
596 { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
597 { "GLOBAL_.F.", sizeof ("GLOBAL_.F.")-1, 5, 0 },
600 { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
601 { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
602 { "GLOBAL_$F$", sizeof ("GLOBAL_$F$")-1, 5, 0 },
604 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
605 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
606 #ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
607 cfront has its own linker procedure to collect them;
608 if collect2 gets them too, they get collected twice
609 when the cfront procedure is run and the compiler used
610 for linking happens to be GCC. */
611 { "sti__", sizeof ("sti__")-1, 1, 1 },
612 { "std__", sizeof ("std__")-1, 2, 1 },
613 #endif /* CFRONT_LOSSAGE */
617 while ((ch = *s) == '_')
623 for (p = &special[0]; p->len > 0; p++)
626 && (!p->two_underscores || ((s - orig_s) >= 2))
627 && strncmp(s, p->name, p->len) == 0)
635 /* We maintain two prefix lists: one from COMPILER_PATH environment variable
636 and one from the PATH variable. */
638 static struct path_prefix cpath, path;
641 /* This is the name of the target machine. We use it to form the name
642 of the files to execute. */
644 static const char *const target_machine = TARGET_MACHINE;
647 /* Search for NAME using prefix list PPREFIX. We only look for executable
650 Return 0 if not found, otherwise return its name, allocated with malloc. */
653 find_a_file (pprefix, name)
654 struct path_prefix *pprefix;
658 struct prefix_list *pl;
659 int len = pprefix->max_len + strlen (name) + 1;
662 fprintf (stderr, "Looking for '%s'\n", name);
664 #ifdef EXECUTABLE_SUFFIX
665 len += strlen (EXECUTABLE_SUFFIX);
668 temp = xmalloc (len);
670 /* Determine the filename to execute (special case for absolute paths). */
673 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
674 || (*name && name[1] == ':')
678 if (access (name, X_OK) == 0)
683 fprintf (stderr, " - found: absolute path\n");
688 #ifdef EXECUTABLE_SUFFIX
689 /* Some systems have a suffix for executable files.
690 So try appending that. */
692 strcat (temp, EXECUTABLE_SUFFIX);
694 if (access (temp, X_OK) == 0)
699 fprintf (stderr, " - failed to locate using absolute path\n");
702 for (pl = pprefix->plist; pl; pl = pl->next)
706 strcpy (temp, pl->prefix);
709 if (stat (temp, &st) >= 0
710 && ! S_ISDIR (st.st_mode)
711 && access (temp, X_OK) == 0)
714 #ifdef EXECUTABLE_SUFFIX
715 /* Some systems have a suffix for executable files.
716 So try appending that. */
717 strcat (temp, EXECUTABLE_SUFFIX);
719 if (stat (temp, &st) >= 0
720 && ! S_ISDIR (st.st_mode)
721 && access (temp, X_OK) == 0)
726 if (debug && pprefix->plist == NULL)
727 fprintf (stderr, " - failed: no entries in prefix list\n");
733 /* Add an entry for PREFIX to prefix list PPREFIX. */
736 add_prefix (pprefix, prefix)
737 struct path_prefix *pprefix;
740 struct prefix_list *pl, **prev;
745 for (pl = pprefix->plist; pl->next; pl = pl->next)
750 prev = &pprefix->plist;
752 /* Keep track of the longest prefix */
754 len = strlen (prefix);
755 if (len > pprefix->max_len)
756 pprefix->max_len = len;
758 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
759 pl->prefix = xstrdup (prefix);
764 pl->next = (struct prefix_list *) 0;
768 /* Take the value of the environment variable ENV, break it into a path, and
769 add of the entries to PPREFIX. */
772 prefix_from_env (env, pprefix)
774 struct path_prefix *pprefix;
777 GET_ENV_PATH_LIST (p, env);
780 prefix_from_string (p, pprefix);
784 prefix_from_string (p, pprefix)
786 struct path_prefix *pprefix;
788 const char *startp, *endp;
789 char *nstore = (char *) xmalloc (strlen (p) + 3);
792 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
797 if (*endp == PATH_SEPARATOR || *endp == 0)
799 strncpy (nstore, startp, endp-startp);
802 strcpy (nstore, "./");
804 else if (! IS_DIR_SEPARATOR (endp[-1]))
806 nstore[endp-startp] = DIR_SEPARATOR;
807 nstore[endp-startp+1] = 0;
810 nstore[endp-startp] = 0;
813 fprintf (stderr, " - add prefix: %s\n", nstore);
815 add_prefix (pprefix, nstore);
818 endp = startp = endp + 1;
827 int main PARAMS ((int, char *[]));
833 const char *ld_suffix = "ld";
834 const char *full_ld_suffix = ld_suffix;
835 const char *real_ld_suffix = "real-ld";
836 const char *collect_ld_suffix = "collect-ld";
837 const char *nm_suffix = "nm";
838 const char *full_nm_suffix = nm_suffix;
839 const char *gnm_suffix = "gnm";
840 const char *full_gnm_suffix = gnm_suffix;
842 const char *ldd_suffix = LDD_SUFFIX;
843 const char *full_ldd_suffix = ldd_suffix;
845 const char *strip_suffix = "strip";
846 const char *full_strip_suffix = strip_suffix;
847 const char *gstrip_suffix = "gstrip";
848 const char *full_gstrip_suffix = gstrip_suffix;
851 #ifdef COLLECT_EXPORT_LIST
855 const char *ld_file_name;
866 int num_c_args = argc+9;
868 #if defined (COLLECT2_HOST_INITIALIZATION)
869 /* Perform system dependent initialization, if neccessary. */
870 COLLECT2_HOST_INITIALIZATION;
873 #ifdef HAVE_LC_MESSAGES
874 setlocale (LC_MESSAGES, "");
876 (void) bindtextdomain (PACKAGE, localedir);
877 (void) textdomain (PACKAGE);
879 /* Do not invoke xcalloc before this point, since locale needs to be
880 set first, in case a diagnostic is issued. */
882 ld1 = (const char **)(ld1_argv = (char **) xcalloc(sizeof (char *), argc+3));
883 ld2 = (const char **)(ld2_argv = (char **) xcalloc(sizeof (char *), argc+10));
884 object = (const char **)(object_lst = (char **) xcalloc(sizeof (char *), argc));
890 /* Parse command line early for instances of -debug. This allows
891 the debug flag to be set before functions like find_a_file()
896 for (i = 1; argv[i] != NULL; i ++)
897 if (! strcmp (argv[i], "-debug"))
902 #ifndef DEFAULT_A_OUT_NAME
903 output_file = "a.out";
905 output_file = DEFAULT_A_OUT_NAME;
908 obstack_begin (&temporary_obstack, 0);
909 obstack_begin (&permanent_obstack, 0);
910 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
912 current_demangling_style = gnu_demangling;
913 p = getenv ("COLLECT_GCC_OPTIONS");
916 const char *q = extract_string (&p);
917 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
920 obstack_free (&temporary_obstack, temporary_firstobj);
922 /* -fno-exceptions -w */
925 c_ptr = (const char **)
926 (c_argv = (char **) xcalloc (sizeof (char *), num_c_args));
929 fatal ("no arguments");
932 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
933 signal (SIGQUIT, handler);
935 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
936 signal (SIGINT, handler);
938 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
939 signal (SIGALRM, handler);
942 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
943 signal (SIGHUP, handler);
945 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
946 signal (SIGSEGV, handler);
948 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
949 signal (SIGBUS, handler);
952 /* Extract COMPILER_PATH and PATH into our prefix list. */
953 prefix_from_env ("COMPILER_PATH", &cpath);
954 prefix_from_env ("PATH", &path);
957 /* If we look for a program in the compiler directories, we just use
958 the short name, since these directories are already system-specific.
959 But it we look for a program in the system directories, we need to
960 qualify the program name with the target machine. */
962 full_ld_suffix = concat(target_machine, "-", ld_suffix, NULL);
965 full_gld_suffix = concat (target_machine, "-", gld_suffix, NULL);
968 full_nm_suffix = concat (target_machine, "-", nm_suffix, NULL);
970 full_gnm_suffix = concat (target_machine, "-", gnm_suffix, NULL);
973 full_ldd_suffix = concat (target_machine, "-", ldd_suffix, NULL);
976 full_strip_suffix = concat (target_machine, "-", strip_suffix, NULL);
978 full_gstrip_suffix = concat (target_machine, "-", gstrip_suffix, NULL);
979 #endif /* CROSS_COMPILE */
981 /* Try to discover a valid linker/nm/strip to use. */
983 /* Maybe we know the right file to use (if not cross). */
985 #ifdef DEFAULT_LINKER
986 if (access (DEFAULT_LINKER, X_OK) == 0)
987 ld_file_name = DEFAULT_LINKER;
988 if (ld_file_name == 0)
990 #ifdef REAL_LD_FILE_NAME
991 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
992 if (ld_file_name == 0)
994 /* Search the (target-specific) compiler dirs for ld'. */
995 ld_file_name = find_a_file (&cpath, real_ld_suffix);
996 /* Likewise for `collect-ld'. */
997 if (ld_file_name == 0)
998 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
999 /* Search the compiler directories for `ld'. We have protection against
1000 recursive calls in find_a_file. */
1001 if (ld_file_name == 0)
1002 ld_file_name = find_a_file (&cpath, ld_suffix);
1003 /* Search the ordinary system bin directories
1004 for `ld' (if native linking) or `TARGET-ld' (if cross). */
1005 if (ld_file_name == 0)
1006 ld_file_name = find_a_file (&path, full_ld_suffix);
1008 #ifdef REAL_NM_FILE_NAME
1009 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
1010 if (nm_file_name == 0)
1012 nm_file_name = find_a_file (&cpath, gnm_suffix);
1013 if (nm_file_name == 0)
1014 nm_file_name = find_a_file (&path, full_gnm_suffix);
1015 if (nm_file_name == 0)
1016 nm_file_name = find_a_file (&cpath, nm_suffix);
1017 if (nm_file_name == 0)
1018 nm_file_name = find_a_file (&path, full_nm_suffix);
1021 ldd_file_name = find_a_file (&cpath, ldd_suffix);
1022 if (ldd_file_name == 0)
1023 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1026 #ifdef REAL_STRIP_FILE_NAME
1027 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1028 if (strip_file_name == 0)
1030 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1031 if (strip_file_name == 0)
1032 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1033 if (strip_file_name == 0)
1034 strip_file_name = find_a_file (&cpath, strip_suffix);
1035 if (strip_file_name == 0)
1036 strip_file_name = find_a_file (&path, full_strip_suffix);
1038 /* Determine the full path name of the C compiler to use. */
1039 c_file_name = getenv ("COLLECT_GCC");
1040 if (c_file_name == 0)
1042 #ifdef CROSS_COMPILE
1043 c_file_name = concat (target_machine, "-gcc", NULL);
1045 c_file_name = "gcc";
1049 p = find_a_file (&cpath, c_file_name);
1051 /* Here it should be safe to use the system search path since we should have
1052 already qualified the name of the compiler when it is needed. */
1054 p = find_a_file (&path, c_file_name);
1059 *ld1++ = *ld2++ = ld_file_name;
1061 /* Make temp file names. */
1062 c_file = make_temp_file (".c");
1063 o_file = make_temp_file (".o");
1064 #ifdef COLLECT_EXPORT_LIST
1065 export_file = make_temp_file (".x");
1067 ldout = make_temp_file (".ld");
1068 *c_ptr++ = c_file_name;
1075 #ifdef COLLECT_EXPORT_LIST
1076 /* Generate a list of directories from LIBPATH. */
1077 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1078 /* Add to this list also two standard directories where
1079 AIX loader always searches for libraries. */
1080 add_prefix (&libpath_lib_dirs, "/lib");
1081 add_prefix (&libpath_lib_dirs, "/usr/lib");
1084 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1086 AIX support needs to know if -shared has been specified before
1087 parsing commandline arguments. */
1089 p = getenv ("COLLECT_GCC_OPTIONS");
1092 const char *q = extract_string (&p);
1093 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1094 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1095 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
1096 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1097 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1099 if (*q == '-' && q[1] == 'B')
1101 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1104 q = extract_string (&p);
1105 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1109 obstack_free (&temporary_obstack, temporary_firstobj);
1110 *c_ptr++ = "-fno-exceptions";
1113 /* !!! When GCC calls collect2,
1114 it does not know whether it is calling collect2 or ld.
1115 So collect2 cannot meaningfully understand any options
1116 except those ld understands.
1117 If you propose to make GCC pass some other option,
1118 just imagine what will happen if ld is really ld!!! */
1120 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1121 /* After the first file, put in the c++ rt0. */
1124 while ((arg = *++argv) != (char *) 0)
1126 *ld1++ = *ld2++ = arg;
1132 #ifdef COLLECT_EXPORT_LIST
1133 /* We want to disable automatic exports on AIX when user
1134 explicitly puts an export list in command line */
1136 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1138 else if (arg[2] == '6' && arg[3] == '4')
1144 if (!strcmp (arg, "-debug"))
1146 /* Already parsed. */
1155 /* place o_file BEFORE this argument! */
1161 #ifdef COLLECT_EXPORT_LIST
1163 /* Resolving full library name. */
1164 const char *s = resolve_lib_name (arg+2);
1166 /* Saving a full library name. */
1167 add_to_list (&libs, s);
1172 #ifdef COLLECT_EXPORT_LIST
1173 /* Saving directories where to search for libraries. */
1175 add_prefix (&cmdline_lib_dirs, arg+2);
1181 output_file = *ld1++ = *ld2++ = *++argv;
1183 #ifdef SWITCHES_NEED_SPACES
1184 && ! strchr (SWITCHES_NEED_SPACES, arg[1])
1188 output_file = &arg[2];
1197 if (arg[2] == '\0' && do_collecting)
1199 /* We must strip after the nm run, otherwise C++ linking
1200 will not work. Thus we strip in the second ld run, or
1201 else with strip if there is no second ld run. */
1213 else if ((p = strrchr (arg, '.')) != (char *) 0
1214 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1215 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0))
1224 /* place o_file BEFORE this argument! */
1230 if (p[1] == 'o' || p[1] == 'l')
1232 #ifdef COLLECT_EXPORT_LIST
1233 /* libraries can be specified directly, i.e. without -l flag. */
1236 /* Saving a full library name. */
1237 add_to_list (&libs, arg);
1243 #ifdef COLLECT_EXPORT_LIST
1244 /* This is added only for debugging purposes. */
1247 fprintf (stderr, "List of libraries:\n");
1248 dump_list (stderr, "\t", libs.first);
1251 /* The AIX linker will discard static constructors in object files if
1252 nothing else in the file is referenced, so look at them first. */
1254 const char **export_object_lst = (const char **)object_lst;
1256 while (export_object_lst < object)
1257 scan_prog_file (*export_object_lst++, PASS_OBJ);
1260 struct id *list = libs.first;
1262 for (; list; list = list->next)
1263 scan_prog_file (list->name, PASS_FIRST);
1268 char *buf = xmalloc (strlen (export_file) + 5);
1270 sprintf (buf, "-bE:%s", export_file);
1274 exportf = fopen (export_file, "w");
1275 if (exportf == (FILE *) 0)
1276 fatal_perror ("fopen %s", export_file);
1277 write_aix_file (exportf, exports.first);
1278 if (fclose (exportf))
1279 fatal_perror ("fclose %s", export_file);
1284 *c_ptr = *ld1 = *object = (char *) 0;
1288 notice ("collect2 version %s", version_string);
1289 #ifdef TARGET_VERSION
1292 fprintf (stderr, "\n");
1298 fprintf (stderr, "ld_file_name = %s\n",
1299 (ld_file_name ? ld_file_name : "not found"));
1300 fprintf (stderr, "c_file_name = %s\n",
1301 (c_file_name ? c_file_name : "not found"));
1302 fprintf (stderr, "nm_file_name = %s\n",
1303 (nm_file_name ? nm_file_name : "not found"));
1305 fprintf (stderr, "ldd_file_name = %s\n",
1306 (ldd_file_name ? ldd_file_name : "not found"));
1308 fprintf (stderr, "strip_file_name = %s\n",
1309 (strip_file_name ? strip_file_name : "not found"));
1310 fprintf (stderr, "c_file = %s\n",
1311 (c_file ? c_file : "not found"));
1312 fprintf (stderr, "o_file = %s\n",
1313 (o_file ? o_file : "not found"));
1315 ptr = getenv ("COLLECT_GCC_OPTIONS");
1317 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1319 ptr = getenv ("COLLECT_GCC");
1321 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1323 ptr = getenv ("COMPILER_PATH");
1325 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1327 ptr = getenv (LIBRARY_PATH_ENV);
1329 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr);
1331 fprintf (stderr, "\n");
1334 /* Load the program, searching all libraries and attempting to provide
1335 undefined symbols from repository information. */
1337 /* On AIX we do this later. */
1338 #ifndef COLLECT_EXPORT_LIST
1339 do_tlink (ld1_argv, object_lst);
1342 /* If -r or they will be run via some other method, do not build the
1343 constructor or destructor list, just return now. */
1345 #ifndef COLLECT_EXPORT_LIST
1350 #ifdef COLLECT_EXPORT_LIST
1351 /* Do the link we avoided above if we are exiting. */
1352 do_tlink (ld1_argv, object_lst);
1354 /* But make sure we delete the export file we may have created. */
1355 if (export_file != 0 && export_file[0])
1356 maybe_unlink (export_file);
1358 maybe_unlink (c_file);
1359 maybe_unlink (o_file);
1363 /* Examine the namelist with nm and search it for static constructors
1364 and destructors to call.
1365 Write the constructor and destructor tables to a .s file and reload. */
1367 /* On AIX we already scanned for global constructors/destructors. */
1368 #ifndef COLLECT_EXPORT_LIST
1369 scan_prog_file (output_file, PASS_FIRST);
1372 #ifdef SCAN_LIBRARIES
1373 scan_libraries (output_file);
1378 notice ("%d constructor(s) found\n", constructors.number);
1379 notice ("%d destructor(s) found\n", destructors.number);
1380 notice ("%d frame table(s) found\n", frame_tables.number);
1383 if (constructors.number == 0 && destructors.number == 0
1384 && frame_tables.number == 0
1385 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1386 /* If we will be running these functions ourselves, we want to emit
1387 stubs into the shared library so that we do not have to relink
1388 dependent programs when we add static objects. */
1393 #ifdef COLLECT_EXPORT_LIST
1394 /* Do tlink without additional code generation */
1395 do_tlink (ld1_argv, object_lst);
1397 /* Strip now if it was requested on the command line. */
1400 char **real_strip_argv = (char **) xcalloc (sizeof (char *), 3);
1401 const char ** strip_argv = (const char **) real_strip_argv;
1403 strip_argv[0] = strip_file_name;
1404 strip_argv[1] = output_file;
1405 strip_argv[2] = (char *) 0;
1406 fork_execute ("strip", real_strip_argv);
1409 #ifdef COLLECT_EXPORT_LIST
1410 maybe_unlink (export_file);
1412 maybe_unlink (c_file);
1413 maybe_unlink (o_file);
1417 /* Sort ctor and dtor lists by priority. */
1418 sort_ids (&constructors);
1419 sort_ids (&destructors);
1421 maybe_unlink(output_file);
1422 outf = fopen (c_file, "w");
1423 if (outf == (FILE *) 0)
1424 fatal_perror ("fopen %s", c_file);
1426 write_c_file (outf, c_file);
1429 fatal_perror ("fclose %s", c_file);
1431 /* Tell the linker that we have initializer and finalizer functions. */
1432 #ifdef LD_INIT_SWITCH
1433 #ifdef COLLECT_EXPORT_LIST
1435 /* option name + functions + colons + NULL */
1436 char *buf = xmalloc (strlen (LD_INIT_SWITCH)
1437 + strlen(initname) + strlen(fininame) + 3);
1438 sprintf (buf, "%s:%s:%s", LD_INIT_SWITCH, initname, fininame);
1442 *ld2++ = LD_INIT_SWITCH;
1444 *ld2++ = LD_FINI_SWITCH;
1449 #ifdef COLLECT_EXPORT_LIST
1452 /* If we did not add export flag to link arguments before, add it to
1453 second link phase now. No new exports should have been added. */
1454 if (! exports.first)
1456 char *buf = xmalloc (strlen (export_file) + 5);
1458 sprintf (buf, "-bE:%s", export_file);
1462 add_to_list (&exports, initname);
1463 add_to_list (&exports, fininame);
1464 add_to_list (&exports, "_GLOBAL__DI");
1465 add_to_list (&exports, "_GLOBAL__DD");
1466 exportf = fopen (export_file, "w");
1467 if (exportf == (FILE *) 0)
1468 fatal_perror ("fopen %s", export_file);
1469 write_aix_file (exportf, exports.first);
1470 if (fclose (exportf))
1471 fatal_perror ("fclose %s", export_file);
1475 /* End of arguments to second link phase. */
1480 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1481 output_file, c_file);
1482 write_c_file (stderr, "stderr");
1483 fprintf (stderr, "========== end of c_file\n\n");
1484 #ifdef COLLECT_EXPORT_LIST
1485 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1486 write_aix_file (stderr, exports.first);
1487 fprintf (stderr, "========== end of export_file\n\n");
1491 /* Assemble the constructor and destructor tables.
1492 Link the tables in with the rest of the program. */
1494 fork_execute ("gcc", c_argv);
1495 #ifdef COLLECT_EXPORT_LIST
1496 /* On AIX we must call tlink because of possible templates resolution */
1497 do_tlink (ld2_argv, object_lst);
1499 /* Otherwise, simply call ld because tlink is already done */
1500 fork_execute ("ld", ld2_argv);
1502 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1503 constructors/destructors in shared libraries. */
1504 scan_prog_file (output_file, PASS_SECOND);
1507 maybe_unlink (c_file);
1508 maybe_unlink (o_file);
1510 #ifdef COLLECT_EXPORT_LIST
1511 maybe_unlink (export_file);
1518 /* Wait for a process to finish, and exit if a non-zero status is found. */
1526 pwait (pexecute_pid, &status, 0);
1529 if (WIFSIGNALED (status))
1531 int sig = WTERMSIG (status);
1532 error ("%s terminated with signal %d [%s]%s",
1533 prog, sig, strsignal(sig),
1534 status & 0200 ? "" : ", core dumped");
1535 collect_exit (FATAL_EXIT_CODE);
1538 if (WIFEXITED (status))
1539 return WEXITSTATUS (status);
1548 int ret = collect_wait (prog);
1551 error ("%s returned %d exit status", prog, ret);
1557 /* Execute a program, and wait for the reply. */
1560 collect_execute (prog, argv, redir)
1567 int redir_handle = -1;
1568 int stdout_save = -1;
1569 int stderr_save = -1;
1577 fprintf (stderr, "%s", argv[0]);
1579 notice ("[cannot find %s]", prog);
1581 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1582 fprintf (stderr, " %s", str);
1584 fprintf (stderr, "\n");
1590 /* If we cannot find a program we need, complain error. Do this here
1591 since we might not end up needing something that we could not find. */
1594 fatal ("cannot find `%s'", prog);
1598 /* Open response file. */
1599 redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT);
1601 /* Duplicate the stdout and stderr file handles
1602 so they can be restored later. */
1603 stdout_save = dup (STDOUT_FILENO);
1604 if (stdout_save == -1)
1605 fatal_perror ("redirecting stdout: %s", redir);
1606 stderr_save = dup (STDERR_FILENO);
1607 if (stderr_save == -1)
1608 fatal_perror ("redirecting stdout: %s", redir);
1610 /* Redirect stdout & stderr to our response file. */
1611 dup2 (redir_handle, STDOUT_FILENO);
1612 dup2 (redir_handle, STDERR_FILENO);
1615 pexecute_pid = pexecute (argv[0], argv, argv[0], NULL,
1616 &errmsg_fmt, &errmsg_arg,
1617 (PEXECUTE_FIRST | PEXECUTE_LAST | PEXECUTE_SEARCH));
1621 /* Restore stdout and stderr to their previous settings. */
1622 dup2 (stdout_save, STDOUT_FILENO);
1623 dup2 (stderr_save, STDERR_FILENO);
1625 /* Close reponse file. */
1626 close (redir_handle);
1629 if (pexecute_pid == -1)
1630 fatal_perror (errmsg_fmt, errmsg_arg);
1634 fork_execute (prog, argv)
1638 collect_execute (prog, argv, NULL);
1642 /* Unlink a file unless we are debugging. */
1651 notice ("[Leaving %s]\n", file);
1655 static long sequence_number = 0;
1657 /* Add a name to a linked list. */
1660 add_to_list (head_ptr, name)
1661 struct head *head_ptr;
1665 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1667 strcpy (newid->name, name);
1669 if (head_ptr->first)
1670 head_ptr->last->next = newid;
1672 head_ptr->first = newid;
1674 /* Check for duplicate symbols. */
1675 for (p = head_ptr->first;
1676 strcmp (name, p->name) != 0;
1681 head_ptr->last->next = 0;
1686 newid->sequence = ++sequence_number;
1687 head_ptr->last = newid;
1691 /* Grab the init priority number from an init function name that
1692 looks like "_GLOBAL_.I.12345.foo". */
1695 extract_init_priority (name)
1700 while (name[pos] == '_')
1702 pos += 10; /* strlen ("GLOBAL__X_") */
1704 /* Extract init_p number from ctor/dtor name. */
1705 pri = atoi (name + pos);
1706 return pri ? pri : DEFAULT_INIT_PRIORITY;
1709 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
1710 ctors will be run from right to left, dtors from left to right. */
1714 struct head *head_ptr;
1716 /* id holds the current element to insert. id_next holds the next
1717 element to insert. id_ptr iterates through the already sorted elements
1718 looking for the place to insert id. */
1719 struct id *id, *id_next, **id_ptr;
1721 id = head_ptr->first;
1723 /* We don't have any sorted elements yet. */
1724 head_ptr->first = NULL;
1726 for (; id; id = id_next)
1729 id->sequence = extract_init_priority (id->name);
1731 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
1733 /* If the sequence numbers are the same, we put the id from the
1734 file later on the command line later in the list. */
1735 || id->sequence > (*id_ptr)->sequence
1736 /* Hack: do lexical compare, too.
1737 || (id->sequence == (*id_ptr)->sequence
1738 && strcmp (id->name, (*id_ptr)->name) > 0) */
1747 /* Now set the sequence numbers properly so write_c_file works. */
1748 for (id = head_ptr->first; id; id = id->next)
1749 id->sequence = ++sequence_number;
1752 /* Write: `prefix', the names on list LIST, `suffix'. */
1755 write_list (stream, prefix, list)
1762 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1767 #ifdef COLLECT_EXPORT_LIST
1768 /* This function is really used only on AIX, but may be useful. */
1770 is_in_list (prefix, list)
1776 if (!strcmp (prefix, list->name)) return 1;
1783 /* Added for debugging purpose. */
1784 #ifdef COLLECT_EXPORT_LIST
1786 dump_list (stream, prefix, list)
1793 fprintf (stream, "%s%s,\n", prefix, list->name);
1801 dump_prefix_list (stream, prefix, list)
1804 struct prefix_list *list;
1808 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1815 write_list_with_asm (stream, prefix, list)
1822 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1823 prefix, list->sequence, list->name);
1828 /* Write out the constructor and destructor tables statically (for a shared
1829 object), along with the functions to execute them. */
1832 write_c_file_stat (stream, name)
1834 const char *name ATTRIBUTE_UNUSED;
1838 int frames = (frame_tables.number > 0);
1840 /* Figure out name of output_file, stripping off .so version. */
1841 p = strrchr (output_file, '/');
1857 if (strncmp (q, ".so", 3) == 0)
1866 /* q points to null at end of the string (or . of the .so version) */
1867 prefix = xmalloc (q - p + 1);
1868 strncpy (prefix, p, q - p);
1870 for (r = prefix; *r; r++)
1871 if (!ISALNUM ((unsigned char)*r))
1874 notice ("\nwrite_c_file - output name is %s, prefix is %s\n",
1875 output_file, prefix);
1877 #define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
1878 initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
1879 sprintf (initname, INIT_NAME_FORMAT, prefix);
1881 #define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
1882 fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
1883 sprintf (fininame, FINI_NAME_FORMAT, prefix);
1887 /* Write the tables as C code */
1889 fprintf (stream, "static int count;\n");
1890 fprintf (stream, "typedef void entry_pt();\n");
1891 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1895 write_list_with_asm (stream, "extern void *", frame_tables.first);
1897 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1898 write_list (stream, "\t\t&", frame_tables.first);
1899 fprintf (stream, "\t0\n};\n");
1901 /* This must match what's in frame.h. */
1902 fprintf (stream, "struct object {\n");
1903 fprintf (stream, " void *pc_begin;\n");
1904 fprintf (stream, " void *pc_end;\n");
1905 fprintf (stream, " void *fde_begin;\n");
1906 fprintf (stream, " void *fde_array;\n");
1907 fprintf (stream, " __SIZE_TYPE__ count;\n");
1908 fprintf (stream, " struct object *next;\n");
1909 fprintf (stream, "};\n");
1911 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1912 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1914 fprintf (stream, "static void reg_frame () {\n");
1915 fprintf (stream, "\tstatic struct object ob;\n");
1916 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1917 fprintf (stream, "\t}\n");
1919 fprintf (stream, "static void dereg_frame () {\n");
1920 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1921 fprintf (stream, "\t}\n");
1924 fprintf (stream, "void %s() {\n", initname);
1925 if (constructors.number > 0 || frames)
1927 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1928 write_list (stream, "\t\t", constructors.first);
1930 fprintf (stream, "\treg_frame,\n");
1931 fprintf (stream, "\t};\n");
1932 fprintf (stream, "\tentry_pt **p;\n");
1933 fprintf (stream, "\tif (count++ != 0) return;\n");
1934 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
1935 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1938 fprintf (stream, "\t++count;\n");
1939 fprintf (stream, "}\n");
1940 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1941 fprintf (stream, "void %s() {\n", fininame);
1942 if (destructors.number > 0 || frames)
1944 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1945 write_list (stream, "\t\t", destructors.first);
1947 fprintf (stream, "\tdereg_frame,\n");
1948 fprintf (stream, "\t};\n");
1949 fprintf (stream, "\tentry_pt **p;\n");
1950 fprintf (stream, "\tif (--count != 0) return;\n");
1951 fprintf (stream, "\tp = dtors;\n");
1952 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
1953 destructors.number + frames);
1955 fprintf (stream, "}\n");
1959 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
1960 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
1964 /* Write the constructor/destructor tables. */
1966 #ifndef LD_INIT_SWITCH
1968 write_c_file_glob (stream, name)
1970 const char *name ATTRIBUTE_UNUSED;
1972 /* Write the tables as C code */
1974 int frames = (frame_tables.number > 0);
1976 fprintf (stream, "typedef void entry_pt();\n\n");
1978 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1982 write_list_with_asm (stream, "extern void *", frame_tables.first);
1984 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1985 write_list (stream, "\t\t&", frame_tables.first);
1986 fprintf (stream, "\t0\n};\n");
1988 /* This must match what's in frame.h. */
1989 fprintf (stream, "struct object {\n");
1990 fprintf (stream, " void *pc_begin;\n");
1991 fprintf (stream, " void *pc_end;\n");
1992 fprintf (stream, " void *fde_begin;\n");
1993 fprintf (stream, " void *fde_array;\n");
1994 fprintf (stream, " __SIZE_TYPE__ count;\n");
1995 fprintf (stream, " struct object *next;\n");
1996 fprintf (stream, "};\n");
1998 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1999 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
2001 fprintf (stream, "static void reg_frame () {\n");
2002 fprintf (stream, "\tstatic struct object ob;\n");
2003 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
2004 fprintf (stream, "\t}\n");
2006 fprintf (stream, "static void dereg_frame () {\n");
2007 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
2008 fprintf (stream, "\t}\n");
2011 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
2012 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
2013 write_list (stream, "\t", constructors.first);
2015 fprintf (stream, "\treg_frame,\n");
2016 fprintf (stream, "\t0\n};\n\n");
2018 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2020 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2021 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2022 write_list (stream, "\t", destructors.first);
2024 fprintf (stream, "\tdereg_frame,\n");
2025 fprintf (stream, "\t0\n};\n\n");
2027 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2028 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2030 #endif /* ! LD_INIT_SWITCH */
2033 write_c_file (stream, name)
2037 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2038 #ifndef LD_INIT_SWITCH
2040 write_c_file_glob (stream, name);
2043 write_c_file_stat (stream, name);
2044 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2047 #ifdef COLLECT_EXPORT_LIST
2049 write_aix_file (stream, list)
2053 for (; list; list = list->next)
2055 fputs (list->name, stream);
2056 putc ('\n', stream);
2061 #ifdef OBJECT_FORMAT_NONE
2063 /* Generic version to scan the name list of the loaded program for
2064 the symbols g++ uses for static constructors and destructors.
2066 The constructor table begins at __CTOR_LIST__ and contains a count
2067 of the number of pointers (or -1 if the constructors are built in a
2068 separate section by the linker), followed by the pointers to the
2069 constructor functions, terminated with a null pointer. The
2070 destructor table has the same format, and begins at __DTOR_LIST__. */
2073 scan_prog_file (prog_name, which_pass)
2074 const char *prog_name;
2075 enum pass which_pass;
2077 void (*int_handler) PARAMS ((int));
2078 void (*quit_handler) PARAMS ((int));
2079 char *real_nm_argv[4];
2080 const char **nm_argv = (const char **) real_nm_argv;
2087 if (which_pass == PASS_SECOND)
2090 /* If we do not have an `nm', complain. */
2091 if (nm_file_name == 0)
2092 fatal ("cannot find `nm'");
2094 nm_argv[argc++] = nm_file_name;
2095 if (NM_FLAGS[0] != '\0')
2096 nm_argv[argc++] = NM_FLAGS;
2098 nm_argv[argc++] = prog_name;
2099 nm_argv[argc++] = (char *) 0;
2101 if (pipe (pipe_fd) < 0)
2102 fatal_perror ("pipe");
2104 inf = fdopen (pipe_fd[0], "r");
2105 if (inf == (FILE *) 0)
2106 fatal_perror ("fdopen");
2108 /* Trace if needed. */
2111 const char **p_argv;
2114 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2115 fprintf (stderr, " %s", str);
2117 fprintf (stderr, "\n");
2123 /* Spawn child nm on pipe */
2126 fatal_perror (VFORK_STRING);
2128 if (pid == 0) /* child context */
2131 if (dup2 (pipe_fd[1], 1) < 0)
2132 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2134 if (close (pipe_fd[0]) < 0)
2135 fatal_perror ("close %d", pipe_fd[0]);
2137 if (close (pipe_fd[1]) < 0)
2138 fatal_perror ("close %d", pipe_fd[1]);
2140 execv (nm_file_name, real_nm_argv);
2141 fatal_perror ("execvp %s", nm_file_name);
2144 /* Parent context from here on. */
2145 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2147 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2150 if (close (pipe_fd[1]) < 0)
2151 fatal_perror ("close %d", pipe_fd[1]);
2154 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2156 /* Read each line of nm output. */
2157 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2162 /* If it contains a constructor or destructor name, add the name
2163 to the appropriate list. */
2165 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2166 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2173 /* Find the end of the symbol name.
2174 Do not include `|', because Encore nm can tack that on the end. */
2175 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2181 switch (is_ctor_dtor (name))
2184 if (which_pass != PASS_LIB)
2185 add_to_list (&constructors, name);
2189 if (which_pass != PASS_LIB)
2190 add_to_list (&destructors, name);
2194 if (which_pass != PASS_LIB)
2195 fatal ("init function found in object %s", prog_name);
2196 #ifndef LD_INIT_SWITCH
2197 add_to_list (&constructors, name);
2202 if (which_pass != PASS_LIB)
2203 fatal ("fini function found in object %s", prog_name);
2204 #ifndef LD_FINI_SWITCH
2205 add_to_list (&destructors, name);
2210 if (which_pass != PASS_LIB)
2211 add_to_list (&frame_tables, name);
2214 default: /* not a constructor or destructor */
2219 fprintf (stderr, "\t%s\n", buf);
2223 fprintf (stderr, "\n");
2225 if (fclose (inf) != 0)
2226 fatal_perror ("fclose");
2228 do_wait (nm_file_name);
2230 signal (SIGINT, int_handler);
2232 signal (SIGQUIT, quit_handler);
2236 #if SUNOS4_SHARED_LIBRARIES
2238 /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2239 that the output file depends upon and their initialization/finalization
2240 routines, if any. */
2245 #include <sys/mman.h>
2246 #include <sys/param.h>
2248 #include <sys/dir.h>
2250 /* pointers to the object file */
2251 unsigned object; /* address of memory mapped file */
2252 unsigned objsize; /* size of memory mapped to file */
2253 char * code; /* pointer to code segment */
2254 char * data; /* pointer to data segment */
2255 struct nlist *symtab; /* pointer to symbol table */
2256 struct link_dynamic *ld;
2257 struct link_dynamic_2 *ld_2;
2258 struct head libraries;
2260 /* Map the file indicated by NAME into memory and store its address. */
2262 static void mapfile PARAMS ((const char *));
2270 if ((fp = open (name, O_RDONLY)) == -1)
2271 fatal ("unable to open file '%s'", name);
2272 if (fstat (fp, &s) == -1)
2273 fatal ("unable to stat file '%s'", name);
2275 objsize = s.st_size;
2276 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2278 if (object == (unsigned)-1)
2279 fatal ("unable to mmap file '%s'", name);
2284 /* Helpers for locatelib. */
2286 static const char *libname;
2288 static int libselect PARAMS ((struct direct *));
2294 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2297 /* If one file has an additional numeric extension past LIBNAME, then put
2298 that one first in the sort. If both files have additional numeric
2299 extensions, then put the one with the higher number first in the sort.
2301 We must verify that the extension is numeric, because Sun saves the
2302 original versions of patched libraries with a .FCS extension. Files with
2303 invalid extensions must go last in the sort, so that they will not be used. */
2304 static int libcompare PARAMS ((struct direct **, struct direct **));
2308 struct direct **d1, **d2;
2310 int i1, i2 = strlen (libname);
2311 char *e1 = (*d1)->d_name + i2;
2312 char *e2 = (*d2)->d_name + i2;
2314 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2315 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2319 i1 = strtol (e1, &e1, 10);
2320 i2 = strtol (e2, &e2, 10);
2327 /* It has a valid numeric extension, prefer this one. */
2328 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2330 /* It has a invalid numeric extension, must prefer the other one. */
2336 /* It has a valid numeric extension, prefer this one. */
2337 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2339 /* It has a invalid numeric extension, must prefer the other one. */
2347 /* Given the name NAME of a dynamic dependency, find its pathname and add
2348 it to the list of libraries. */
2349 static void locatelib PARAMS ((const char *));
2355 static const char **l;
2357 char buf[MAXPATHLEN];
2365 /* counting elements in array, need 1 extra for null */
2367 ld_rules = (char *) (ld_2->ld_rules + code);
2371 for (; *ld_rules != 0; ld_rules++)
2372 if (*ld_rules == ':')
2374 ld_rules = (char *) (ld_2->ld_rules + code);
2375 ldr = xstrdup (ld_rules);
2377 p = getenv ("LD_LIBRARY_PATH");
2382 for (q = p ; *q != 0; q++)
2387 l = (const char **) xmalloc ((cnt + 3) * sizeof (char *));
2392 for (; *ldr != 0; ldr++)
2402 for (; *q != 0; q++)
2409 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2412 *pp++ = "/usr/local/lib";
2416 for (pp = l; *pp != 0 ; pp++)
2418 struct direct **namelist;
2420 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2422 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2423 add_to_list (&libraries, buf);
2425 fprintf (stderr, "%s\n", buf);
2432 notice ("not found\n");
2434 fatal ("dynamic dependency %s not found", name);
2438 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2439 that it depends upon and any constructors or destructors they contain. */
2442 scan_libraries (prog_name)
2443 const char *prog_name;
2445 struct exec *header;
2447 struct link_object *lo;
2448 char buff[MAXPATHLEN];
2451 mapfile (prog_name);
2452 header = (struct exec *)object;
2453 if (N_BADMAG (*header))
2454 fatal ("bad magic number in file '%s'", prog_name);
2455 if (header->a_dynamic == 0)
2458 code = (char *) (N_TXTOFF (*header) + (long) header);
2459 data = (char *) (N_DATOFF (*header) + (long) header);
2460 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2462 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2465 ld = (struct link_dynamic *) (symtab->n_value + code);
2471 ld = (struct link_dynamic *) data;
2476 notice ("dynamic dependencies.\n");
2478 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2479 for (lo = (struct link_object *) ld_2->ld_need; lo;
2480 lo = (struct link_object *) lo->lo_next)
2483 lo = (struct link_object *) ((long) lo + code);
2484 name = (char *) (code + lo->lo_name);
2488 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2489 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2495 fprintf (stderr, "\t%s\n", name);
2496 add_to_list (&libraries, name);
2501 fprintf (stderr, "\n");
2503 /* now iterate through the library list adding their symbols to
2505 for (list = libraries.first; list; list = list->next)
2506 scan_prog_file (list->name, PASS_LIB);
2509 #else /* SUNOS4_SHARED_LIBRARIES */
2512 /* Use the List Dynamic Dependencies program to find shared libraries that
2513 the output file depends upon and their initialization/finalization
2514 routines, if any. */
2517 scan_libraries (prog_name)
2518 const char *prog_name;
2520 static struct head libraries; /* list of shared libraries found */
2522 void (*int_handler) PARAMS ((int));
2523 void (*quit_handler) PARAMS ((int));
2524 char *real_ldd_argv[4];
2525 const char **ldd_argv = (const char **) real_ldd_argv;
2532 /* If we do not have an `ldd', complain. */
2533 if (ldd_file_name == 0)
2535 error ("cannot find `ldd'");
2539 ldd_argv[argc++] = ldd_file_name;
2540 ldd_argv[argc++] = prog_name;
2541 ldd_argv[argc++] = (char *) 0;
2543 if (pipe (pipe_fd) < 0)
2544 fatal_perror ("pipe");
2546 inf = fdopen (pipe_fd[0], "r");
2547 if (inf == (FILE *) 0)
2548 fatal_perror ("fdopen");
2550 /* Trace if needed. */
2553 const char **p_argv;
2556 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2557 fprintf (stderr, " %s", str);
2559 fprintf (stderr, "\n");
2565 /* Spawn child ldd on pipe */
2568 fatal_perror (VFORK_STRING);
2570 if (pid == 0) /* child context */
2573 if (dup2 (pipe_fd[1], 1) < 0)
2574 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2576 if (close (pipe_fd[0]) < 0)
2577 fatal_perror ("close %d", pipe_fd[0]);
2579 if (close (pipe_fd[1]) < 0)
2580 fatal_perror ("close %d", pipe_fd[1]);
2582 execv (ldd_file_name, real_ldd_argv);
2583 fatal_perror ("execv %s", ldd_file_name);
2586 /* Parent context from here on. */
2587 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2589 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2592 if (close (pipe_fd[1]) < 0)
2593 fatal_perror ("close %d", pipe_fd[1]);
2596 notice ("\nldd output with constructors/destructors.\n");
2598 /* Read each line of ldd output. */
2599 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2602 char *name, *end, *p = buf;
2604 /* Extract names of libraries and add to list. */
2605 PARSE_LDD_OUTPUT (p);
2610 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2611 fatal ("dynamic dependency %s not found", buf);
2613 /* Find the end of the symbol name. */
2615 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2620 if (access (name, R_OK) == 0)
2621 add_to_list (&libraries, name);
2623 fatal ("unable to open dynamic dependency '%s'", buf);
2626 fprintf (stderr, "\t%s\n", buf);
2629 fprintf (stderr, "\n");
2631 if (fclose (inf) != 0)
2632 fatal_perror ("fclose");
2634 do_wait (ldd_file_name);
2636 signal (SIGINT, int_handler);
2638 signal (SIGQUIT, quit_handler);
2641 /* now iterate through the library list adding their symbols to
2643 for (list = libraries.first; list; list = list->next)
2644 scan_prog_file (list->name, PASS_LIB);
2647 #endif /* LDD_SUFFIX */
2648 #endif /* SUNOS4_SHARED_LIBRARIES */
2650 #endif /* OBJECT_FORMAT_NONE */
2654 * COFF specific stuff.
2657 #ifdef OBJECT_FORMAT_COFF
2659 #if defined(EXTENDED_COFF)
2660 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2661 # define GCC_SYMENT SYMR
2662 # define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal)
2663 # define GCC_SYMINC(X) (1)
2664 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2665 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2667 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2668 # define GCC_SYMENT SYMENT
2669 # define GCC_OK_SYMBOL(X) \
2670 (((X).n_sclass == C_EXT) && \
2671 ((X).n_scnum > N_UNDEF) && \
2673 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
2674 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
2675 # define GCC_UNDEF_SYMBOL(X) \
2676 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
2677 # define GCC_SYMINC(X) ((X).n_numaux+1)
2678 # define GCC_SYMZERO(X) 0
2679 # define GCC_CHECK_HDR(X) \
2680 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2681 || (HEADER (X).f_magic == 0757 && aix64_flag))
2684 extern char *ldgetname PARAMS ((LDFILE *, GCC_SYMENT *));
2685 extern int ldtbread PARAMS ((LDFILE *, long, GCC_SYMENT *));
2686 extern int ldclose PARAMS ((LDFILE *));
2688 /* COFF version to scan the name list of the loaded program for
2689 the symbols g++ uses for static constructors and destructors.
2691 The constructor table begins at __CTOR_LIST__ and contains a count
2692 of the number of pointers (or -1 if the constructors are built in a
2693 separate section by the linker), followed by the pointers to the
2694 constructor functions, terminated with a null pointer. The
2695 destructor table has the same format, and begins at __DTOR_LIST__. */
2698 scan_prog_file (prog_name, which_pass)
2699 const char *prog_name;
2700 enum pass which_pass;
2702 LDFILE *ldptr = NULL;
2703 int sym_index, sym_count;
2706 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
2709 #ifdef COLLECT_EXPORT_LIST
2710 /* We do not need scanning for some standard C libraries. */
2711 if (which_pass == PASS_FIRST && ignore_library (prog_name))
2714 /* On AIX we have a loop, because there is not much difference
2715 between an object and an archive. This trick allows us to
2716 eliminate scan_libraries() function. */
2720 /* Some platforms (e.g. OSF4) declare ldopen as taking a
2721 non-const char * filename parameter, even though it will not
2722 modify that string. So we must cast away const-ness here,
2723 which will cause -Wcast-qual to burp. */
2724 if ((ldptr = ldopen ((char *)prog_name, ldptr)) != NULL)
2726 if (! MY_ISCOFF (HEADER (ldptr).f_magic))
2727 fatal ("%s: not a COFF file", prog_name);
2729 if (GCC_CHECK_HDR (ldptr))
2731 sym_count = GCC_SYMBOLS (ldptr);
2732 sym_index = GCC_SYMZERO (ldptr);
2734 #ifdef COLLECT_EXPORT_LIST
2735 /* Is current archive member a shared object? */
2736 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2739 while (sym_index < sym_count)
2743 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2745 sym_index += GCC_SYMINC (symbol);
2747 if (GCC_OK_SYMBOL (symbol))
2751 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2752 continue; /* should never happen */
2754 #ifdef XCOFF_DEBUGGING_INFO
2755 /* All AIX function names have a duplicate entry
2756 beginning with a dot. */
2761 switch (is_ctor_dtor (name))
2765 add_to_list (&constructors, name);
2766 #ifdef COLLECT_EXPORT_LIST
2767 if (which_pass == PASS_OBJ)
2768 add_to_list (&exports, name);
2774 add_to_list (&destructors, name);
2775 #ifdef COLLECT_EXPORT_LIST
2776 if (which_pass == PASS_OBJ)
2777 add_to_list (&exports, name);
2781 #ifdef COLLECT_EXPORT_LIST
2783 #ifndef LD_INIT_SWITCH
2785 add_to_list (&constructors, name);
2790 #ifndef LD_INIT_SWITCH
2792 add_to_list (&destructors, name);
2799 add_to_list (&frame_tables, name);
2800 #ifdef COLLECT_EXPORT_LIST
2801 if (which_pass == PASS_OBJ)
2802 add_to_list (&exports, name);
2806 default: /* not a constructor or destructor */
2807 #ifdef COLLECT_EXPORT_LIST
2808 /* If we are building a shared object on AIX we need
2809 to explicitly export all global symbols. */
2812 if (which_pass == PASS_OBJ && (! export_flag))
2813 add_to_list (&exports, name);
2820 #if !defined(EXTENDED_COFF)
2821 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2822 symbol.n_scnum, symbol.n_sclass,
2823 (symbol.n_type ? "0" : ""), symbol.n_type,
2827 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
2828 symbol.iss, (long) symbol.value, symbol.index, name);
2833 #ifdef COLLECT_EXPORT_LIST
2836 /* If archive contains both 32-bit and 64-bit objects,
2837 we want to skip objects in other mode so mismatch normal. */
2839 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
2840 prog_name, HEADER (ldptr).f_magic, aix64_flag);
2846 fatal ("%s: cannot open as COFF file", prog_name);
2848 #ifdef COLLECT_EXPORT_LIST
2849 /* On AIX loop continues while there are more members in archive. */
2851 while (ldclose (ldptr) == FAILURE);
2853 /* Otherwise we simply close ldptr. */
2854 (void) ldclose(ldptr);
2859 #ifdef COLLECT_EXPORT_LIST
2860 /* Given a library name without "lib" prefix, this function
2861 returns a full library name including a path. */
2863 resolve_lib_name (name)
2869 for (i = 0; libpaths[i]; i++)
2870 if (libpaths[i]->max_len > l)
2871 l = libpaths[i]->max_len;
2873 lib_buf = xmalloc (l + strlen(name) + 10);
2875 for (i = 0; libpaths[i]; i++)
2877 struct prefix_list *list = libpaths[i]->plist;
2878 for (; list; list = list->next)
2880 /* The following lines are needed because path_prefix list
2881 may contain directories both with trailing '/' and
2884 if (list->prefix[strlen(list->prefix)-1] != '/')
2886 for (j = 0; libexts[j]; j++)
2888 sprintf (lib_buf, "%s%slib%s.%s",
2889 list->prefix, p, name, libexts[j]);
2890 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
2891 if (file_exists (lib_buf))
2893 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
2900 fprintf (stderr, "not found\n");
2902 fatal ("Library lib%s not found", name);
2906 /* Array of standard AIX libraries which should not
2907 be scanned for ctors/dtors. */
2908 static const char *aix_std_libs[] = {
2913 "/usr/lib/libc_r.a",
2914 "/usr/lib/threads/libc.a",
2915 "/usr/ccs/lib/libc.a",
2916 "/usr/ccs/lib/libc_r.a",
2920 /* This function checks the filename and returns 1
2921 if this name matches the location of a standard AIX library. */
2923 ignore_library (name)
2926 const char **p = &aix_std_libs[0];
2927 while (*p++ != NULL)
2928 if (! strcmp (name, *p)) return 1;
2933 #endif /* OBJECT_FORMAT_COFF */
2937 * OSF/rose specific stuff.
2940 #ifdef OBJECT_FORMAT_ROSE
2942 /* Union of the various load commands */
2944 typedef union load_union
2946 ldc_header_t hdr; /* common header */
2947 load_cmd_map_command_t map; /* map indexing other load cmds */
2948 interpreter_command_t iprtr; /* interpreter pathname */
2949 strings_command_t str; /* load commands strings section */
2950 region_command_t region; /* region load command */
2951 reloc_command_t reloc; /* relocation section */
2952 package_command_t pkg; /* package load command */
2953 symbols_command_t sym; /* symbol sections */
2954 entry_command_t ent; /* program start section */
2955 gen_info_command_t info; /* object information */
2956 func_table_command_t func; /* function constructors/destructors */
2959 /* Structure to point to load command and data section in memory. */
2961 typedef struct load_all
2963 load_union_t *load; /* load command */
2964 char *section; /* pointer to section */
2967 /* Structure to contain information about a file mapped into memory. */
2971 char *start; /* start of map */
2972 char *name; /* filename */
2973 long size; /* size of the file */
2974 long rounded_size; /* size rounded to page boundary */
2975 int fd; /* file descriptor */
2976 int rw; /* != 0 if opened read/write */
2977 int use_mmap; /* != 0 if mmap'ed */
2980 extern int decode_mach_o_hdr ();
2981 extern int encode_mach_o_hdr ();
2983 static void add_func_table PARAMS ((mo_header_t *, load_all_t *,
2984 symbol_info_t *, int));
2985 static void print_header PARAMS ((mo_header_t *));
2986 static void print_load_command PARAMS ((load_union_t *, size_t, int));
2987 static void bad_header PARAMS ((int));
2988 static struct file_info *read_file PARAMS ((const char *, int, int));
2989 static void end_file PARAMS ((struct file_info *));
2991 /* OSF/rose specific version to scan the name list of the loaded
2992 program for the symbols g++ uses for static constructors and
2995 The constructor table begins at __CTOR_LIST__ and contains a count
2996 of the number of pointers (or -1 if the constructors are built in a
2997 separate section by the linker), followed by the pointers to the
2998 constructor functions, terminated with a null pointer. The
2999 destructor table has the same format, and begins at __DTOR_LIST__. */
3002 scan_prog_file (prog_name, which_pass)
3003 const char *prog_name;
3004 enum pass which_pass;
3008 load_all_t *load_array;
3009 load_all_t *load_end;
3010 load_all_t *load_cmd;
3011 int symbol_load_cmds;
3017 struct file_info *obj_file;
3019 mo_lcid_t cmd_strings = -1;
3020 symbol_info_t *main_sym = 0;
3021 int rw = (which_pass != PASS_FIRST);
3023 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3025 fatal_perror ("open %s", prog_name);
3027 obj_file = read_file (prog_name, prog_fd, rw);
3028 obj = obj_file->start;
3030 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3031 if (status != MO_HDR_CONV_SUCCESS)
3032 bad_header (status);
3035 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3036 since the hardware will automatically swap bytes for us on loading little endian
3039 #ifndef CROSS_COMPILE
3040 if (hdr.moh_magic != MOH_MAGIC_MSB
3041 || hdr.moh_header_version != MOH_HEADER_VERSION
3042 || hdr.moh_byte_order != OUR_BYTE_ORDER
3043 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3044 || hdr.moh_cpu_type != OUR_CPU_TYPE
3045 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3046 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3048 fatal ("incompatibilities between object file & expected values");
3053 print_header (&hdr);
3055 offset = hdr.moh_first_cmd_off;
3056 load_end = load_array
3057 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3059 /* Build array of load commands, calculating the offsets */
3060 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3062 load_union_t *load_hdr; /* load command header */
3064 load_cmd = load_end++;
3065 load_hdr = (load_union_t *) (obj + offset);
3067 /* If modifying the program file, copy the header. */
3070 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3071 memcpy ((char *)ptr, (char *)load_hdr, load_hdr->hdr.ldci_cmd_size);
3074 /* null out old command map, because we will rewrite at the end. */
3075 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3077 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3078 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3082 load_cmd->load = load_hdr;
3083 if (load_hdr->hdr.ldci_section_off > 0)
3084 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3087 print_load_command (load_hdr, offset, i);
3089 offset += load_hdr->hdr.ldci_cmd_size;
3092 /* If the last command is the load command map and is not undefined,
3093 decrement the count of load commands. */
3094 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3097 hdr.moh_n_load_cmds--;
3100 /* Go through and process each symbol table section. */
3101 symbol_load_cmds = 0;
3102 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3104 load_union_t *load_hdr = load_cmd->load;
3106 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3112 const char *kind = "unknown";
3114 switch (load_hdr->sym.symc_kind)
3116 case SYMC_IMPORTS: kind = "imports"; break;
3117 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3118 case SYMC_STABS: kind = "stabs"; break;
3121 notice ("\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3122 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3125 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3128 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3129 if (str_sect == (char *) 0)
3130 fatal ("string section missing");
3132 if (load_cmd->section == (char *) 0)
3133 fatal ("section pointer missing");
3135 num_syms = load_hdr->sym.symc_nentries;
3136 for (i = 0; i < num_syms; i++)
3138 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3139 char *name = sym->si_name.symbol_name + str_sect;
3146 char *n = name + strlen (name) - strlen (NAME__MAIN);
3148 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3158 switch (is_ctor_dtor (name))
3161 add_to_list (&constructors, name);
3165 add_to_list (&destructors, name);
3168 default: /* not a constructor or destructor */
3174 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3175 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3180 if (symbol_load_cmds == 0)
3181 fatal ("no symbol table found");
3183 /* Update the program file now, rewrite header and load commands. At present,
3184 we assume that there is enough space after the last load command to insert
3185 one more. Since the first section written out is page aligned, and the
3186 number of load commands is small, this is ok for the present. */
3190 load_union_t *load_map;
3193 if (cmd_strings == -1)
3194 fatal ("no cmd_strings found");
3196 /* Add __main to initializer list.
3197 If we are building a program instead of a shared library, do not
3198 do anything, since in the current version, you cannot do mallocs
3199 and such in the constructors. */
3201 if (main_sym != (symbol_info_t *) 0
3202 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3203 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3206 notice ("\nUpdating header and load commands.\n\n");
3208 hdr.moh_n_load_cmds++;
3209 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3211 /* Create new load command map. */
3213 notice ("load command map, %d cmds, new size %ld.\n",
3214 (int) hdr.moh_n_load_cmds, (long) size);
3216 load_map = (load_union_t *) xcalloc (1, size);
3217 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3218 load_map->map.ldc_header.ldci_cmd_size = size;
3219 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3220 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3221 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3223 offset = hdr.moh_first_cmd_off;
3224 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3226 load_map->map.lcm_map[i] = offset;
3227 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3228 hdr.moh_load_map_cmd_off = offset;
3230 offset += load_array[i].load->hdr.ldci_cmd_size;
3233 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3236 print_header (&hdr);
3239 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3240 if (status != MO_HDR_CONV_SUCCESS)
3241 bad_header (status);
3244 notice ("writing load commands.\n\n");
3246 /* Write load commands */
3247 offset = hdr.moh_first_cmd_off;
3248 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3250 load_union_t *load_hdr = load_array[i].load;
3251 size_t size = load_hdr->hdr.ldci_cmd_size;
3254 print_load_command (load_hdr, offset, i);
3256 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3261 end_file (obj_file);
3263 if (close (prog_fd))
3264 fatal_perror ("close %s", prog_name);
3267 fprintf (stderr, "\n");
3271 /* Add a function table to the load commands to call a function
3272 on initiation or termination of the process. */
3275 add_func_table (hdr_p, load_array, sym, type)
3276 mo_header_t *hdr_p; /* pointer to global header */
3277 load_all_t *load_array; /* array of ptrs to load cmds */
3278 symbol_info_t *sym; /* pointer to symbol entry */
3279 int type; /* fntc_type value */
3281 /* Add a new load command. */
3282 int num_cmds = ++hdr_p->moh_n_load_cmds;
3283 int load_index = num_cmds - 1;
3284 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3285 load_union_t *ptr = xcalloc (1, size);
3286 load_all_t *load_cmd;
3289 /* Set the unresolved address bit in the header to force the loader to be
3290 used, since kernel exec does not call the initialization functions. */
3291 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3293 load_cmd = &load_array[load_index];
3294 load_cmd->load = ptr;
3295 load_cmd->section = (char *) 0;
3297 /* Fill in func table load command. */
3298 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3299 ptr->func.ldc_header.ldci_cmd_size = size;
3300 ptr->func.ldc_header.ldci_section_off = 0;
3301 ptr->func.ldc_header.ldci_section_len = 0;
3302 ptr->func.fntc_type = type;
3303 ptr->func.fntc_nentries = 1;
3305 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3306 /* Is the symbol already expressed as (region, offset)? */
3307 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3309 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3310 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3313 /* If not, figure out which region it's in. */
3316 mo_vm_addr_t addr = sym->si_value.abs_val;
3319 for (i = 0; i < load_index; i++)
3321 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3323 region_command_t *region_ptr = &load_array[i].load->region;
3325 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3326 && addr >= region_ptr->regc_addr.vm_addr
3327 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3329 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3330 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3338 fatal ("could not convert 0x%l.8x into a region", addr);
3342 notice ("%s function, region %d, offset = %ld (0x%.8lx)\n",
3343 type == FNTC_INITIALIZATION ? "init" : "term",
3344 (int) ptr->func.fntc_entry_loc[i].adr_lcid,
3345 (long) ptr->func.fntc_entry_loc[i].adr_sctoff,
3346 (long) ptr->func.fntc_entry_loc[i].adr_sctoff);
3351 /* Print the global header for an OSF/rose object. */
3354 print_header (hdr_ptr)
3355 mo_header_t *hdr_ptr;
3357 fprintf (stderr, "\nglobal header:\n");
3358 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3359 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3360 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3361 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3362 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3363 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3364 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3365 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3366 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3367 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3368 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3369 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3370 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3371 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3372 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3374 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3375 fprintf (stderr, ", relocatable");
3377 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3378 fprintf (stderr, ", linkable");
3380 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3381 fprintf (stderr, ", execable");
3383 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3384 fprintf (stderr, ", executable");
3386 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3387 fprintf (stderr, ", unresolved");
3389 fprintf (stderr, "\n\n");
3394 /* Print a short summary of a load command. */
3397 print_load_command (load_hdr, offset, number)
3398 load_union_t *load_hdr;
3402 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3403 const char *type_str = (char *) 0;
3407 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3408 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3409 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3410 case LDC_STRINGS: type_str = "STRINGS"; break;
3411 case LDC_REGION: type_str = "REGION"; break;
3412 case LDC_RELOC: type_str = "RELOC"; break;
3413 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3414 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3415 case LDC_ENTRY: type_str = "ENTRY"; break;
3416 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3417 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3421 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3423 (long) load_hdr->hdr.ldci_cmd_size,
3425 (long) load_hdr->hdr.ldci_section_off,
3426 (long) load_hdr->hdr.ldci_section_len);
3428 if (type_str == (char *) 0)
3429 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3431 else if (type != LDC_REGION)
3432 fprintf (stderr, ", ty: %s\n", type_str);
3436 const char *region = "";
3437 switch (load_hdr->region.regc_usage_type)
3439 case REG_TEXT_T: region = ", .text"; break;
3440 case REG_DATA_T: region = ", .data"; break;
3441 case REG_BSS_T: region = ", .bss"; break;
3442 case REG_GLUE_T: region = ", .glue"; break;
3443 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3444 case REG_RDATA_T: region = ", .rdata"; break;
3445 case REG_SDATA_T: region = ", .sdata"; break;
3446 case REG_SBSS_T: region = ", .sbss"; break;
3450 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3452 (long) load_hdr->region.regc_vm_addr,
3453 (long) load_hdr->region.regc_vm_size,
3461 /* Fatal error when {en,de}code_mach_o_header fails. */
3469 case MO_ERROR_BAD_MAGIC: fatal ("bad magic number");
3470 case MO_ERROR_BAD_HDR_VERS: fatal ("bad header version");
3471 case MO_ERROR_BAD_RAW_HDR_VERS: fatal ("bad raw header version");
3472 case MO_ERROR_BUF2SML: fatal ("raw header buffer too small");
3473 case MO_ERROR_OLD_RAW_HDR_FILE: fatal ("old raw header file");
3474 case MO_ERROR_UNSUPPORTED_VERS: fatal ("unsupported version");
3476 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3481 /* Read a file into a memory buffer. */
3483 static struct file_info *
3484 read_file (name, fd, rw)
3485 const char *name; /* filename */
3486 int fd; /* file descriptor */
3487 int rw; /* read/write */
3489 struct stat stat_pkt;
3490 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3492 static int page_size;
3495 if (fstat (fd, &stat_pkt) < 0)
3496 fatal_perror ("fstat %s", name);
3499 p->size = stat_pkt.st_size;
3500 p->rounded_size = stat_pkt.st_size;
3506 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3509 page_size = sysconf (_SC_PAGE_SIZE);
3511 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3512 p->start = mmap ((caddr_t) 0,
3513 (rw) ? p->rounded_size : p->size,
3514 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3515 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3519 if (p->start != (char *) 0 && p->start != (char *) -1)
3523 #endif /* USE_MMAP */
3528 fprintf (stderr, "read %s\n", name);
3531 p->start = xmalloc (p->size);
3532 if (lseek (fd, 0L, SEEK_SET) < 0)
3533 fatal_perror ("lseek %s 0", name);
3535 len = read (fd, p->start, p->size);
3537 fatal_perror ("read %s", name);
3540 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3546 /* Do anything necessary to write a file back from memory. */
3550 struct file_info *ptr; /* file information block */
3558 fprintf (stderr, "msync %s\n", ptr->name);
3560 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3561 fatal_perror ("msync %s", ptr->name);
3565 fprintf (stderr, "munmap %s\n", ptr->name);
3567 if (munmap (ptr->start, ptr->size))
3568 fatal_perror ("munmap %s", ptr->name);
3571 #endif /* USE_MMAP */
3578 fprintf (stderr, "write %s\n", ptr->name);
3580 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3581 fatal_perror ("lseek %s 0", ptr->name);
3583 len = write (ptr->fd, ptr->start, ptr->size);
3585 fatal_perror ("write %s", ptr->name);
3587 if (len != ptr->size)
3588 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3597 #endif /* OBJECT_FORMAT_ROSE */