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 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
854 const char *ld_file_name;
865 int num_c_args = argc+9;
867 #if defined (COLLECT2_HOST_INITIALIZATION)
868 /* Perform system dependent initialization, if neccessary. */
869 COLLECT2_HOST_INITIALIZATION;
872 /* LC_CTYPE determines the character set used by the terminal so it has be set
873 to output messages correctly. */
875 #ifdef HAVE_LC_MESSAGES
876 setlocale (LC_CTYPE, "");
877 setlocale (LC_MESSAGES, "");
879 setlocale (LC_ALL, "");
882 (void) bindtextdomain (PACKAGE, localedir);
883 (void) textdomain (PACKAGE);
885 /* Do not invoke xcalloc before this point, since locale needs to be
886 set first, in case a diagnostic is issued. */
888 ld1 = (const char **)(ld1_argv = (char **) xcalloc(sizeof (char *), argc+3));
889 ld2 = (const char **)(ld2_argv = (char **) xcalloc(sizeof (char *), argc+10));
890 object = (const char **)(object_lst = (char **) xcalloc(sizeof (char *), argc));
896 /* Parse command line early for instances of -debug. This allows
897 the debug flag to be set before functions like find_a_file()
902 for (i = 1; argv[i] != NULL; i ++)
903 if (! strcmp (argv[i], "-debug"))
908 #ifndef DEFAULT_A_OUT_NAME
909 output_file = "a.out";
911 output_file = DEFAULT_A_OUT_NAME;
914 obstack_begin (&temporary_obstack, 0);
915 obstack_begin (&permanent_obstack, 0);
916 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
918 current_demangling_style = auto_demangling;
919 p = getenv ("COLLECT_GCC_OPTIONS");
922 const char *q = extract_string (&p);
923 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
926 obstack_free (&temporary_obstack, temporary_firstobj);
928 /* -fno-exceptions -w */
931 c_ptr = (const char **)
932 (c_argv = (char **) xcalloc (sizeof (char *), num_c_args));
935 fatal ("no arguments");
938 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
939 signal (SIGQUIT, handler);
941 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
942 signal (SIGINT, handler);
944 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
945 signal (SIGALRM, handler);
948 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
949 signal (SIGHUP, handler);
951 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
952 signal (SIGSEGV, handler);
954 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
955 signal (SIGBUS, handler);
958 /* Extract COMPILER_PATH and PATH into our prefix list. */
959 prefix_from_env ("COMPILER_PATH", &cpath);
960 prefix_from_env ("PATH", &path);
963 /* If we look for a program in the compiler directories, we just use
964 the short name, since these directories are already system-specific.
965 But it we look for a program in the system directories, we need to
966 qualify the program name with the target machine. */
968 full_ld_suffix = concat(target_machine, "-", ld_suffix, NULL);
971 full_gld_suffix = concat (target_machine, "-", gld_suffix, NULL);
974 full_nm_suffix = concat (target_machine, "-", nm_suffix, NULL);
976 full_gnm_suffix = concat (target_machine, "-", gnm_suffix, NULL);
979 full_ldd_suffix = concat (target_machine, "-", ldd_suffix, NULL);
982 full_strip_suffix = concat (target_machine, "-", strip_suffix, NULL);
984 full_gstrip_suffix = concat (target_machine, "-", gstrip_suffix, NULL);
985 #endif /* CROSS_COMPILE */
987 /* Try to discover a valid linker/nm/strip to use. */
989 /* Maybe we know the right file to use (if not cross). */
991 #ifdef DEFAULT_LINKER
992 if (access (DEFAULT_LINKER, X_OK) == 0)
993 ld_file_name = DEFAULT_LINKER;
994 if (ld_file_name == 0)
996 #ifdef REAL_LD_FILE_NAME
997 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
998 if (ld_file_name == 0)
1000 /* Search the (target-specific) compiler dirs for ld'. */
1001 ld_file_name = find_a_file (&cpath, real_ld_suffix);
1002 /* Likewise for `collect-ld'. */
1003 if (ld_file_name == 0)
1004 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
1005 /* Search the compiler directories for `ld'. We have protection against
1006 recursive calls in find_a_file. */
1007 if (ld_file_name == 0)
1008 ld_file_name = find_a_file (&cpath, ld_suffix);
1009 /* Search the ordinary system bin directories
1010 for `ld' (if native linking) or `TARGET-ld' (if cross). */
1011 if (ld_file_name == 0)
1012 ld_file_name = find_a_file (&path, full_ld_suffix);
1014 #ifdef REAL_NM_FILE_NAME
1015 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
1016 if (nm_file_name == 0)
1018 nm_file_name = find_a_file (&cpath, gnm_suffix);
1019 if (nm_file_name == 0)
1020 nm_file_name = find_a_file (&path, full_gnm_suffix);
1021 if (nm_file_name == 0)
1022 nm_file_name = find_a_file (&cpath, nm_suffix);
1023 if (nm_file_name == 0)
1024 nm_file_name = find_a_file (&path, full_nm_suffix);
1027 ldd_file_name = find_a_file (&cpath, ldd_suffix);
1028 if (ldd_file_name == 0)
1029 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1032 #ifdef REAL_STRIP_FILE_NAME
1033 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1034 if (strip_file_name == 0)
1036 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1037 if (strip_file_name == 0)
1038 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1039 if (strip_file_name == 0)
1040 strip_file_name = find_a_file (&cpath, strip_suffix);
1041 if (strip_file_name == 0)
1042 strip_file_name = find_a_file (&path, full_strip_suffix);
1044 /* Determine the full path name of the C compiler to use. */
1045 c_file_name = getenv ("COLLECT_GCC");
1046 if (c_file_name == 0)
1048 #ifdef CROSS_COMPILE
1049 c_file_name = concat (target_machine, "-gcc", NULL);
1051 c_file_name = "gcc";
1055 p = find_a_file (&cpath, c_file_name);
1057 /* Here it should be safe to use the system search path since we should have
1058 already qualified the name of the compiler when it is needed. */
1060 p = find_a_file (&path, c_file_name);
1065 *ld1++ = *ld2++ = ld_file_name;
1067 /* Make temp file names. */
1068 c_file = make_temp_file (".c");
1069 o_file = make_temp_file (".o");
1070 #ifdef COLLECT_EXPORT_LIST
1071 export_file = make_temp_file (".x");
1073 ldout = make_temp_file (".ld");
1074 *c_ptr++ = c_file_name;
1081 #ifdef COLLECT_EXPORT_LIST
1082 /* Generate a list of directories from LIBPATH. */
1083 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1084 /* Add to this list also two standard directories where
1085 AIX loader always searches for libraries. */
1086 add_prefix (&libpath_lib_dirs, "/lib");
1087 add_prefix (&libpath_lib_dirs, "/usr/lib");
1090 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1092 AIX support needs to know if -shared has been specified before
1093 parsing commandline arguments. */
1095 p = getenv ("COLLECT_GCC_OPTIONS");
1098 const char *q = extract_string (&p);
1099 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1100 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1101 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
1102 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1103 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1105 if (*q == '-' && q[1] == 'B')
1107 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1110 q = extract_string (&p);
1111 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1115 obstack_free (&temporary_obstack, temporary_firstobj);
1116 *c_ptr++ = "-fno-exceptions";
1119 /* !!! When GCC calls collect2,
1120 it does not know whether it is calling collect2 or ld.
1121 So collect2 cannot meaningfully understand any options
1122 except those ld understands.
1123 If you propose to make GCC pass some other option,
1124 just imagine what will happen if ld is really ld!!! */
1126 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1127 /* After the first file, put in the c++ rt0. */
1130 while ((arg = *++argv) != (char *) 0)
1132 *ld1++ = *ld2++ = arg;
1138 #ifdef COLLECT_EXPORT_LIST
1139 /* We want to disable automatic exports on AIX when user
1140 explicitly puts an export list in command line */
1142 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1144 else if (arg[2] == '6' && arg[3] == '4')
1150 if (!strcmp (arg, "-debug"))
1152 /* Already parsed. */
1161 /* place o_file BEFORE this argument! */
1167 #ifdef COLLECT_EXPORT_LIST
1169 /* Resolving full library name. */
1170 const char *s = resolve_lib_name (arg+2);
1172 /* Saving a full library name. */
1173 add_to_list (&libs, s);
1178 #ifdef COLLECT_EXPORT_LIST
1179 /* Saving directories where to search for libraries. */
1181 add_prefix (&cmdline_lib_dirs, arg+2);
1187 output_file = *ld1++ = *ld2++ = *++argv;
1189 #ifdef SWITCHES_NEED_SPACES
1190 && ! strchr (SWITCHES_NEED_SPACES, arg[1])
1194 output_file = &arg[2];
1203 if (arg[2] == '\0' && do_collecting)
1205 /* We must strip after the nm run, otherwise C++ linking
1206 will not work. Thus we strip in the second ld run, or
1207 else with strip if there is no second ld run. */
1219 else if ((p = strrchr (arg, '.')) != (char *) 0
1220 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1221 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0
1222 || strcmp (p, ".obj") == 0))
1231 /* place o_file BEFORE this argument! */
1237 if (p[1] == 'o' || p[1] == 'l')
1239 #ifdef COLLECT_EXPORT_LIST
1240 /* libraries can be specified directly, i.e. without -l flag. */
1243 /* Saving a full library name. */
1244 add_to_list (&libs, arg);
1250 #ifdef COLLECT_EXPORT_LIST
1251 /* This is added only for debugging purposes. */
1254 fprintf (stderr, "List of libraries:\n");
1255 dump_list (stderr, "\t", libs.first);
1258 /* The AIX linker will discard static constructors in object files if
1259 nothing else in the file is referenced, so look at them first. */
1261 const char **export_object_lst = (const char **)object_lst;
1263 while (export_object_lst < object)
1264 scan_prog_file (*export_object_lst++, PASS_OBJ);
1267 struct id *list = libs.first;
1269 for (; list; list = list->next)
1270 scan_prog_file (list->name, PASS_FIRST);
1275 char *buf = xmalloc (strlen (export_file) + 5);
1277 sprintf (buf, "-bE:%s", export_file);
1281 exportf = fopen (export_file, "w");
1282 if (exportf == (FILE *) 0)
1283 fatal_perror ("fopen %s", export_file);
1284 write_aix_file (exportf, exports.first);
1285 if (fclose (exportf))
1286 fatal_perror ("fclose %s", export_file);
1291 *c_ptr = *ld1 = *object = (char *) 0;
1295 notice ("collect2 version %s", version_string);
1296 #ifdef TARGET_VERSION
1299 fprintf (stderr, "\n");
1305 fprintf (stderr, "ld_file_name = %s\n",
1306 (ld_file_name ? ld_file_name : "not found"));
1307 fprintf (stderr, "c_file_name = %s\n",
1308 (c_file_name ? c_file_name : "not found"));
1309 fprintf (stderr, "nm_file_name = %s\n",
1310 (nm_file_name ? nm_file_name : "not found"));
1312 fprintf (stderr, "ldd_file_name = %s\n",
1313 (ldd_file_name ? ldd_file_name : "not found"));
1315 fprintf (stderr, "strip_file_name = %s\n",
1316 (strip_file_name ? strip_file_name : "not found"));
1317 fprintf (stderr, "c_file = %s\n",
1318 (c_file ? c_file : "not found"));
1319 fprintf (stderr, "o_file = %s\n",
1320 (o_file ? o_file : "not found"));
1322 ptr = getenv ("COLLECT_GCC_OPTIONS");
1324 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1326 ptr = getenv ("COLLECT_GCC");
1328 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1330 ptr = getenv ("COMPILER_PATH");
1332 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1334 ptr = getenv (LIBRARY_PATH_ENV);
1336 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr);
1338 fprintf (stderr, "\n");
1341 /* Load the program, searching all libraries and attempting to provide
1342 undefined symbols from repository information. */
1344 /* On AIX we do this later. */
1345 #ifndef COLLECT_EXPORT_LIST
1346 do_tlink (ld1_argv, object_lst);
1349 /* If -r or they will be run via some other method, do not build the
1350 constructor or destructor list, just return now. */
1352 #ifndef COLLECT_EXPORT_LIST
1357 #ifdef COLLECT_EXPORT_LIST
1358 /* Do the link we avoided above if we are exiting. */
1359 do_tlink (ld1_argv, object_lst);
1361 /* But make sure we delete the export file we may have created. */
1362 if (export_file != 0 && export_file[0])
1363 maybe_unlink (export_file);
1365 maybe_unlink (c_file);
1366 maybe_unlink (o_file);
1370 /* Examine the namelist with nm and search it for static constructors
1371 and destructors to call.
1372 Write the constructor and destructor tables to a .s file and reload. */
1374 /* On AIX we already scanned for global constructors/destructors. */
1375 #ifndef COLLECT_EXPORT_LIST
1376 scan_prog_file (output_file, PASS_FIRST);
1379 #ifdef SCAN_LIBRARIES
1380 scan_libraries (output_file);
1385 notice ("%d constructor(s) found\n", constructors.number);
1386 notice ("%d destructor(s) found\n", destructors.number);
1387 notice ("%d frame table(s) found\n", frame_tables.number);
1390 if (constructors.number == 0 && destructors.number == 0
1391 && frame_tables.number == 0
1392 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1393 /* If we will be running these functions ourselves, we want to emit
1394 stubs into the shared library so that we do not have to relink
1395 dependent programs when we add static objects. */
1400 #ifdef COLLECT_EXPORT_LIST
1401 /* Do tlink without additional code generation */
1402 do_tlink (ld1_argv, object_lst);
1404 /* Strip now if it was requested on the command line. */
1407 char **real_strip_argv = (char **) xcalloc (sizeof (char *), 3);
1408 const char ** strip_argv = (const char **) real_strip_argv;
1410 strip_argv[0] = strip_file_name;
1411 strip_argv[1] = output_file;
1412 strip_argv[2] = (char *) 0;
1413 fork_execute ("strip", real_strip_argv);
1416 #ifdef COLLECT_EXPORT_LIST
1417 maybe_unlink (export_file);
1419 maybe_unlink (c_file);
1420 maybe_unlink (o_file);
1424 /* Sort ctor and dtor lists by priority. */
1425 sort_ids (&constructors);
1426 sort_ids (&destructors);
1428 maybe_unlink(output_file);
1429 outf = fopen (c_file, "w");
1430 if (outf == (FILE *) 0)
1431 fatal_perror ("fopen %s", c_file);
1433 write_c_file (outf, c_file);
1436 fatal_perror ("fclose %s", c_file);
1438 /* Tell the linker that we have initializer and finalizer functions. */
1439 #ifdef LD_INIT_SWITCH
1440 #ifdef COLLECT_EXPORT_LIST
1442 /* option name + functions + colons + NULL */
1443 char *buf = xmalloc (strlen (LD_INIT_SWITCH)
1444 + strlen(initname) + strlen(fininame) + 3);
1445 sprintf (buf, "%s:%s:%s", LD_INIT_SWITCH, initname, fininame);
1449 *ld2++ = LD_INIT_SWITCH;
1451 *ld2++ = LD_FINI_SWITCH;
1456 #ifdef COLLECT_EXPORT_LIST
1459 /* If we did not add export flag to link arguments before, add it to
1460 second link phase now. No new exports should have been added. */
1461 if (! exports.first)
1463 char *buf = xmalloc (strlen (export_file) + 5);
1465 sprintf (buf, "-bE:%s", export_file);
1469 add_to_list (&exports, initname);
1470 add_to_list (&exports, fininame);
1471 add_to_list (&exports, "_GLOBAL__DI");
1472 add_to_list (&exports, "_GLOBAL__DD");
1473 exportf = fopen (export_file, "w");
1474 if (exportf == (FILE *) 0)
1475 fatal_perror ("fopen %s", export_file);
1476 write_aix_file (exportf, exports.first);
1477 if (fclose (exportf))
1478 fatal_perror ("fclose %s", export_file);
1482 /* End of arguments to second link phase. */
1487 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1488 output_file, c_file);
1489 write_c_file (stderr, "stderr");
1490 fprintf (stderr, "========== end of c_file\n\n");
1491 #ifdef COLLECT_EXPORT_LIST
1492 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1493 write_aix_file (stderr, exports.first);
1494 fprintf (stderr, "========== end of export_file\n\n");
1498 /* Assemble the constructor and destructor tables.
1499 Link the tables in with the rest of the program. */
1501 fork_execute ("gcc", c_argv);
1502 #ifdef COLLECT_EXPORT_LIST
1503 /* On AIX we must call tlink because of possible templates resolution */
1504 do_tlink (ld2_argv, object_lst);
1506 /* Otherwise, simply call ld because tlink is already done */
1507 fork_execute ("ld", ld2_argv);
1509 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1510 constructors/destructors in shared libraries. */
1511 scan_prog_file (output_file, PASS_SECOND);
1514 maybe_unlink (c_file);
1515 maybe_unlink (o_file);
1517 #ifdef COLLECT_EXPORT_LIST
1518 maybe_unlink (export_file);
1525 /* Wait for a process to finish, and exit if a non-zero status is found. */
1533 pwait (pexecute_pid, &status, 0);
1536 if (WIFSIGNALED (status))
1538 int sig = WTERMSIG (status);
1539 error ("%s terminated with signal %d [%s]%s",
1540 prog, sig, strsignal(sig),
1541 status & 0200 ? "" : ", core dumped");
1542 collect_exit (FATAL_EXIT_CODE);
1545 if (WIFEXITED (status))
1546 return WEXITSTATUS (status);
1555 int ret = collect_wait (prog);
1558 error ("%s returned %d exit status", prog, ret);
1564 /* Execute a program, and wait for the reply. */
1567 collect_execute (prog, argv, redir)
1574 int redir_handle = -1;
1575 int stdout_save = -1;
1576 int stderr_save = -1;
1584 fprintf (stderr, "%s", argv[0]);
1586 notice ("[cannot find %s]", prog);
1588 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1589 fprintf (stderr, " %s", str);
1591 fprintf (stderr, "\n");
1597 /* If we cannot find a program we need, complain error. Do this here
1598 since we might not end up needing something that we could not find. */
1601 fatal ("cannot find `%s'", prog);
1605 /* Open response file. */
1606 redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT);
1608 /* Duplicate the stdout and stderr file handles
1609 so they can be restored later. */
1610 stdout_save = dup (STDOUT_FILENO);
1611 if (stdout_save == -1)
1612 fatal_perror ("redirecting stdout: %s", redir);
1613 stderr_save = dup (STDERR_FILENO);
1614 if (stderr_save == -1)
1615 fatal_perror ("redirecting stdout: %s", redir);
1617 /* Redirect stdout & stderr to our response file. */
1618 dup2 (redir_handle, STDOUT_FILENO);
1619 dup2 (redir_handle, STDERR_FILENO);
1622 pexecute_pid = pexecute (argv[0], argv, argv[0], NULL,
1623 &errmsg_fmt, &errmsg_arg,
1624 (PEXECUTE_FIRST | PEXECUTE_LAST | PEXECUTE_SEARCH));
1628 /* Restore stdout and stderr to their previous settings. */
1629 dup2 (stdout_save, STDOUT_FILENO);
1630 dup2 (stderr_save, STDERR_FILENO);
1632 /* Close reponse file. */
1633 close (redir_handle);
1636 if (pexecute_pid == -1)
1637 fatal_perror (errmsg_fmt, errmsg_arg);
1641 fork_execute (prog, argv)
1645 collect_execute (prog, argv, NULL);
1649 /* Unlink a file unless we are debugging. */
1658 notice ("[Leaving %s]\n", file);
1662 static long sequence_number = 0;
1664 /* Add a name to a linked list. */
1667 add_to_list (head_ptr, name)
1668 struct head *head_ptr;
1672 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1674 strcpy (newid->name, name);
1676 if (head_ptr->first)
1677 head_ptr->last->next = newid;
1679 head_ptr->first = newid;
1681 /* Check for duplicate symbols. */
1682 for (p = head_ptr->first;
1683 strcmp (name, p->name) != 0;
1688 head_ptr->last->next = 0;
1693 newid->sequence = ++sequence_number;
1694 head_ptr->last = newid;
1698 /* Grab the init priority number from an init function name that
1699 looks like "_GLOBAL_.I.12345.foo". */
1702 extract_init_priority (name)
1707 while (name[pos] == '_')
1709 pos += 10; /* strlen ("GLOBAL__X_") */
1711 /* Extract init_p number from ctor/dtor name. */
1712 pri = atoi (name + pos);
1713 return pri ? pri : DEFAULT_INIT_PRIORITY;
1716 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
1717 ctors will be run from right to left, dtors from left to right. */
1721 struct head *head_ptr;
1723 /* id holds the current element to insert. id_next holds the next
1724 element to insert. id_ptr iterates through the already sorted elements
1725 looking for the place to insert id. */
1726 struct id *id, *id_next, **id_ptr;
1728 id = head_ptr->first;
1730 /* We don't have any sorted elements yet. */
1731 head_ptr->first = NULL;
1733 for (; id; id = id_next)
1736 id->sequence = extract_init_priority (id->name);
1738 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
1740 /* If the sequence numbers are the same, we put the id from the
1741 file later on the command line later in the list. */
1742 || id->sequence > (*id_ptr)->sequence
1743 /* Hack: do lexical compare, too.
1744 || (id->sequence == (*id_ptr)->sequence
1745 && strcmp (id->name, (*id_ptr)->name) > 0) */
1754 /* Now set the sequence numbers properly so write_c_file works. */
1755 for (id = head_ptr->first; id; id = id->next)
1756 id->sequence = ++sequence_number;
1759 /* Write: `prefix', the names on list LIST, `suffix'. */
1762 write_list (stream, prefix, list)
1769 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1774 #ifdef COLLECT_EXPORT_LIST
1775 /* This function is really used only on AIX, but may be useful. */
1777 is_in_list (prefix, list)
1783 if (!strcmp (prefix, list->name)) return 1;
1790 /* Added for debugging purpose. */
1791 #ifdef COLLECT_EXPORT_LIST
1793 dump_list (stream, prefix, list)
1800 fprintf (stream, "%s%s,\n", prefix, list->name);
1808 dump_prefix_list (stream, prefix, list)
1811 struct prefix_list *list;
1815 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1822 write_list_with_asm (stream, prefix, list)
1829 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1830 prefix, list->sequence, list->name);
1835 /* Write out the constructor and destructor tables statically (for a shared
1836 object), along with the functions to execute them. */
1839 write_c_file_stat (stream, name)
1841 const char *name ATTRIBUTE_UNUSED;
1845 int frames = (frame_tables.number > 0);
1847 /* Figure out name of output_file, stripping off .so version. */
1848 p = strrchr (output_file, '/');
1864 if (strncmp (q, ".so", 3) == 0)
1873 /* q points to null at end of the string (or . of the .so version) */
1874 prefix = xmalloc (q - p + 1);
1875 strncpy (prefix, p, q - p);
1877 for (r = prefix; *r; r++)
1878 if (!ISALNUM ((unsigned char)*r))
1881 notice ("\nwrite_c_file - output name is %s, prefix is %s\n",
1882 output_file, prefix);
1884 #define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
1885 initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
1886 sprintf (initname, INIT_NAME_FORMAT, prefix);
1888 #define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
1889 fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
1890 sprintf (fininame, FINI_NAME_FORMAT, prefix);
1894 /* Write the tables as C code */
1896 fprintf (stream, "static int count;\n");
1897 fprintf (stream, "typedef void entry_pt();\n");
1898 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1902 write_list_with_asm (stream, "extern void *", frame_tables.first);
1904 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1905 write_list (stream, "\t\t&", frame_tables.first);
1906 fprintf (stream, "\t0\n};\n");
1908 /* This must match what's in frame.h. */
1909 fprintf (stream, "struct object {\n");
1910 fprintf (stream, " void *pc_begin;\n");
1911 fprintf (stream, " void *pc_end;\n");
1912 fprintf (stream, " void *fde_begin;\n");
1913 fprintf (stream, " void *fde_array;\n");
1914 fprintf (stream, " __SIZE_TYPE__ count;\n");
1915 fprintf (stream, " struct object *next;\n");
1916 fprintf (stream, "};\n");
1918 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1919 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1921 fprintf (stream, "static void reg_frame () {\n");
1922 fprintf (stream, "\tstatic struct object ob;\n");
1923 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1924 fprintf (stream, "\t}\n");
1926 fprintf (stream, "static void dereg_frame () {\n");
1927 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1928 fprintf (stream, "\t}\n");
1931 fprintf (stream, "void %s() {\n", initname);
1932 if (constructors.number > 0 || frames)
1934 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1935 write_list (stream, "\t\t", constructors.first);
1937 fprintf (stream, "\treg_frame,\n");
1938 fprintf (stream, "\t};\n");
1939 fprintf (stream, "\tentry_pt **p;\n");
1940 fprintf (stream, "\tif (count++ != 0) return;\n");
1941 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
1942 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1945 fprintf (stream, "\t++count;\n");
1946 fprintf (stream, "}\n");
1947 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1948 fprintf (stream, "void %s() {\n", fininame);
1949 if (destructors.number > 0 || frames)
1951 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1952 write_list (stream, "\t\t", destructors.first);
1954 fprintf (stream, "\tdereg_frame,\n");
1955 fprintf (stream, "\t};\n");
1956 fprintf (stream, "\tentry_pt **p;\n");
1957 fprintf (stream, "\tif (--count != 0) return;\n");
1958 fprintf (stream, "\tp = dtors;\n");
1959 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
1960 destructors.number + frames);
1962 fprintf (stream, "}\n");
1966 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
1967 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
1971 /* Write the constructor/destructor tables. */
1973 #ifndef LD_INIT_SWITCH
1975 write_c_file_glob (stream, name)
1977 const char *name ATTRIBUTE_UNUSED;
1979 /* Write the tables as C code */
1981 int frames = (frame_tables.number > 0);
1983 fprintf (stream, "typedef void entry_pt();\n\n");
1985 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1989 write_list_with_asm (stream, "extern void *", frame_tables.first);
1991 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1992 write_list (stream, "\t\t&", frame_tables.first);
1993 fprintf (stream, "\t0\n};\n");
1995 /* This must match what's in frame.h. */
1996 fprintf (stream, "struct object {\n");
1997 fprintf (stream, " void *pc_begin;\n");
1998 fprintf (stream, " void *pc_end;\n");
1999 fprintf (stream, " void *fde_begin;\n");
2000 fprintf (stream, " void *fde_array;\n");
2001 fprintf (stream, " __SIZE_TYPE__ count;\n");
2002 fprintf (stream, " struct object *next;\n");
2003 fprintf (stream, "};\n");
2005 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
2006 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
2008 fprintf (stream, "static void reg_frame () {\n");
2009 fprintf (stream, "\tstatic struct object ob;\n");
2010 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
2011 fprintf (stream, "\t}\n");
2013 fprintf (stream, "static void dereg_frame () {\n");
2014 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
2015 fprintf (stream, "\t}\n");
2018 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
2019 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
2020 write_list (stream, "\t", constructors.first);
2022 fprintf (stream, "\treg_frame,\n");
2023 fprintf (stream, "\t0\n};\n\n");
2025 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2027 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2028 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2029 write_list (stream, "\t", destructors.first);
2031 fprintf (stream, "\tdereg_frame,\n");
2032 fprintf (stream, "\t0\n};\n\n");
2034 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2035 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2037 #endif /* ! LD_INIT_SWITCH */
2040 write_c_file (stream, name)
2044 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2045 #ifndef LD_INIT_SWITCH
2047 write_c_file_glob (stream, name);
2050 write_c_file_stat (stream, name);
2051 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2054 #ifdef COLLECT_EXPORT_LIST
2056 write_aix_file (stream, list)
2060 for (; list; list = list->next)
2062 fputs (list->name, stream);
2063 putc ('\n', stream);
2068 #ifdef OBJECT_FORMAT_NONE
2070 /* Generic version to scan the name list of the loaded program for
2071 the symbols g++ uses for static constructors and destructors.
2073 The constructor table begins at __CTOR_LIST__ and contains a count
2074 of the number of pointers (or -1 if the constructors are built in a
2075 separate section by the linker), followed by the pointers to the
2076 constructor functions, terminated with a null pointer. The
2077 destructor table has the same format, and begins at __DTOR_LIST__. */
2080 scan_prog_file (prog_name, which_pass)
2081 const char *prog_name;
2082 enum pass which_pass;
2084 void (*int_handler) PARAMS ((int));
2085 void (*quit_handler) PARAMS ((int));
2086 char *real_nm_argv[4];
2087 const char **nm_argv = (const char **) real_nm_argv;
2094 if (which_pass == PASS_SECOND)
2097 /* If we do not have an `nm', complain. */
2098 if (nm_file_name == 0)
2099 fatal ("cannot find `nm'");
2101 nm_argv[argc++] = nm_file_name;
2102 if (NM_FLAGS[0] != '\0')
2103 nm_argv[argc++] = NM_FLAGS;
2105 nm_argv[argc++] = prog_name;
2106 nm_argv[argc++] = (char *) 0;
2108 if (pipe (pipe_fd) < 0)
2109 fatal_perror ("pipe");
2111 inf = fdopen (pipe_fd[0], "r");
2112 if (inf == (FILE *) 0)
2113 fatal_perror ("fdopen");
2115 /* Trace if needed. */
2118 const char **p_argv;
2121 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2122 fprintf (stderr, " %s", str);
2124 fprintf (stderr, "\n");
2130 /* Spawn child nm on pipe */
2133 fatal_perror (VFORK_STRING);
2135 if (pid == 0) /* child context */
2138 if (dup2 (pipe_fd[1], 1) < 0)
2139 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2141 if (close (pipe_fd[0]) < 0)
2142 fatal_perror ("close %d", pipe_fd[0]);
2144 if (close (pipe_fd[1]) < 0)
2145 fatal_perror ("close %d", pipe_fd[1]);
2147 execv (nm_file_name, real_nm_argv);
2148 fatal_perror ("execvp %s", nm_file_name);
2151 /* Parent context from here on. */
2152 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2154 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2157 if (close (pipe_fd[1]) < 0)
2158 fatal_perror ("close %d", pipe_fd[1]);
2161 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2163 /* Read each line of nm output. */
2164 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2169 /* If it contains a constructor or destructor name, add the name
2170 to the appropriate list. */
2172 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2173 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2180 /* Find the end of the symbol name.
2181 Do not include `|', because Encore nm can tack that on the end. */
2182 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2188 switch (is_ctor_dtor (name))
2191 if (which_pass != PASS_LIB)
2192 add_to_list (&constructors, name);
2196 if (which_pass != PASS_LIB)
2197 add_to_list (&destructors, name);
2201 if (which_pass != PASS_LIB)
2202 fatal ("init function found in object %s", prog_name);
2203 #ifndef LD_INIT_SWITCH
2204 add_to_list (&constructors, name);
2209 if (which_pass != PASS_LIB)
2210 fatal ("fini function found in object %s", prog_name);
2211 #ifndef LD_FINI_SWITCH
2212 add_to_list (&destructors, name);
2217 if (which_pass != PASS_LIB)
2218 add_to_list (&frame_tables, name);
2221 default: /* not a constructor or destructor */
2226 fprintf (stderr, "\t%s\n", buf);
2230 fprintf (stderr, "\n");
2232 if (fclose (inf) != 0)
2233 fatal_perror ("fclose");
2235 do_wait (nm_file_name);
2237 signal (SIGINT, int_handler);
2239 signal (SIGQUIT, quit_handler);
2243 #if SUNOS4_SHARED_LIBRARIES
2245 /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2246 that the output file depends upon and their initialization/finalization
2247 routines, if any. */
2252 #include <sys/mman.h>
2253 #include <sys/param.h>
2255 #include <sys/dir.h>
2257 /* pointers to the object file */
2258 unsigned object; /* address of memory mapped file */
2259 unsigned objsize; /* size of memory mapped to file */
2260 char * code; /* pointer to code segment */
2261 char * data; /* pointer to data segment */
2262 struct nlist *symtab; /* pointer to symbol table */
2263 struct link_dynamic *ld;
2264 struct link_dynamic_2 *ld_2;
2265 struct head libraries;
2267 /* Map the file indicated by NAME into memory and store its address. */
2269 static void mapfile PARAMS ((const char *));
2277 if ((fp = open (name, O_RDONLY)) == -1)
2278 fatal ("unable to open file '%s'", name);
2279 if (fstat (fp, &s) == -1)
2280 fatal ("unable to stat file '%s'", name);
2282 objsize = s.st_size;
2283 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2285 if (object == (unsigned)-1)
2286 fatal ("unable to mmap file '%s'", name);
2291 /* Helpers for locatelib. */
2293 static const char *libname;
2295 static int libselect PARAMS ((struct direct *));
2301 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2304 /* If one file has an additional numeric extension past LIBNAME, then put
2305 that one first in the sort. If both files have additional numeric
2306 extensions, then put the one with the higher number first in the sort.
2308 We must verify that the extension is numeric, because Sun saves the
2309 original versions of patched libraries with a .FCS extension. Files with
2310 invalid extensions must go last in the sort, so that they will not be used. */
2311 static int libcompare PARAMS ((struct direct **, struct direct **));
2315 struct direct **d1, **d2;
2317 int i1, i2 = strlen (libname);
2318 char *e1 = (*d1)->d_name + i2;
2319 char *e2 = (*d2)->d_name + i2;
2321 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2322 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2326 i1 = strtol (e1, &e1, 10);
2327 i2 = strtol (e2, &e2, 10);
2334 /* It has a valid numeric extension, prefer this one. */
2335 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2337 /* It has a invalid numeric extension, must prefer the other one. */
2343 /* It has a valid numeric extension, prefer this one. */
2344 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2346 /* It has a invalid numeric extension, must prefer the other one. */
2354 /* Given the name NAME of a dynamic dependency, find its pathname and add
2355 it to the list of libraries. */
2356 static void locatelib PARAMS ((const char *));
2362 static const char **l;
2364 char buf[MAXPATHLEN];
2372 /* counting elements in array, need 1 extra for null */
2374 ld_rules = (char *) (ld_2->ld_rules + code);
2378 for (; *ld_rules != 0; ld_rules++)
2379 if (*ld_rules == ':')
2381 ld_rules = (char *) (ld_2->ld_rules + code);
2382 ldr = xstrdup (ld_rules);
2384 p = getenv ("LD_LIBRARY_PATH");
2389 for (q = p ; *q != 0; q++)
2394 l = (const char **) xmalloc ((cnt + 3) * sizeof (char *));
2399 for (; *ldr != 0; ldr++)
2409 for (; *q != 0; q++)
2416 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2419 *pp++ = "/usr/local/lib";
2423 for (pp = l; *pp != 0 ; pp++)
2425 struct direct **namelist;
2427 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2429 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2430 add_to_list (&libraries, buf);
2432 fprintf (stderr, "%s\n", buf);
2439 notice ("not found\n");
2441 fatal ("dynamic dependency %s not found", name);
2445 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2446 that it depends upon and any constructors or destructors they contain. */
2449 scan_libraries (prog_name)
2450 const char *prog_name;
2452 struct exec *header;
2454 struct link_object *lo;
2455 char buff[MAXPATHLEN];
2458 mapfile (prog_name);
2459 header = (struct exec *)object;
2460 if (N_BADMAG (*header))
2461 fatal ("bad magic number in file '%s'", prog_name);
2462 if (header->a_dynamic == 0)
2465 code = (char *) (N_TXTOFF (*header) + (long) header);
2466 data = (char *) (N_DATOFF (*header) + (long) header);
2467 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2469 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2472 ld = (struct link_dynamic *) (symtab->n_value + code);
2478 ld = (struct link_dynamic *) data;
2483 notice ("dynamic dependencies.\n");
2485 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2486 for (lo = (struct link_object *) ld_2->ld_need; lo;
2487 lo = (struct link_object *) lo->lo_next)
2490 lo = (struct link_object *) ((long) lo + code);
2491 name = (char *) (code + lo->lo_name);
2495 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2496 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2502 fprintf (stderr, "\t%s\n", name);
2503 add_to_list (&libraries, name);
2508 fprintf (stderr, "\n");
2510 /* now iterate through the library list adding their symbols to
2512 for (list = libraries.first; list; list = list->next)
2513 scan_prog_file (list->name, PASS_LIB);
2516 #else /* SUNOS4_SHARED_LIBRARIES */
2519 /* Use the List Dynamic Dependencies program to find shared libraries that
2520 the output file depends upon and their initialization/finalization
2521 routines, if any. */
2524 scan_libraries (prog_name)
2525 const char *prog_name;
2527 static struct head libraries; /* list of shared libraries found */
2529 void (*int_handler) PARAMS ((int));
2530 void (*quit_handler) PARAMS ((int));
2531 char *real_ldd_argv[4];
2532 const char **ldd_argv = (const char **) real_ldd_argv;
2539 /* If we do not have an `ldd', complain. */
2540 if (ldd_file_name == 0)
2542 error ("cannot find `ldd'");
2546 ldd_argv[argc++] = ldd_file_name;
2547 ldd_argv[argc++] = prog_name;
2548 ldd_argv[argc++] = (char *) 0;
2550 if (pipe (pipe_fd) < 0)
2551 fatal_perror ("pipe");
2553 inf = fdopen (pipe_fd[0], "r");
2554 if (inf == (FILE *) 0)
2555 fatal_perror ("fdopen");
2557 /* Trace if needed. */
2560 const char **p_argv;
2563 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2564 fprintf (stderr, " %s", str);
2566 fprintf (stderr, "\n");
2572 /* Spawn child ldd on pipe */
2575 fatal_perror (VFORK_STRING);
2577 if (pid == 0) /* child context */
2580 if (dup2 (pipe_fd[1], 1) < 0)
2581 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2583 if (close (pipe_fd[0]) < 0)
2584 fatal_perror ("close %d", pipe_fd[0]);
2586 if (close (pipe_fd[1]) < 0)
2587 fatal_perror ("close %d", pipe_fd[1]);
2589 execv (ldd_file_name, real_ldd_argv);
2590 fatal_perror ("execv %s", ldd_file_name);
2593 /* Parent context from here on. */
2594 int_handler = (void (*) PARAMS ((int))) signal (SIGINT, SIG_IGN);
2596 quit_handler = (void (*) PARAMS ((int))) signal (SIGQUIT, SIG_IGN);
2599 if (close (pipe_fd[1]) < 0)
2600 fatal_perror ("close %d", pipe_fd[1]);
2603 notice ("\nldd output with constructors/destructors.\n");
2605 /* Read each line of ldd output. */
2606 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2609 char *name, *end, *p = buf;
2611 /* Extract names of libraries and add to list. */
2612 PARSE_LDD_OUTPUT (p);
2617 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2618 fatal ("dynamic dependency %s not found", buf);
2620 /* Find the end of the symbol name. */
2622 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2627 if (access (name, R_OK) == 0)
2628 add_to_list (&libraries, name);
2630 fatal ("unable to open dynamic dependency '%s'", buf);
2633 fprintf (stderr, "\t%s\n", buf);
2636 fprintf (stderr, "\n");
2638 if (fclose (inf) != 0)
2639 fatal_perror ("fclose");
2641 do_wait (ldd_file_name);
2643 signal (SIGINT, int_handler);
2645 signal (SIGQUIT, quit_handler);
2648 /* now iterate through the library list adding their symbols to
2650 for (list = libraries.first; list; list = list->next)
2651 scan_prog_file (list->name, PASS_LIB);
2654 #endif /* LDD_SUFFIX */
2655 #endif /* SUNOS4_SHARED_LIBRARIES */
2657 #endif /* OBJECT_FORMAT_NONE */
2661 * COFF specific stuff.
2664 #ifdef OBJECT_FORMAT_COFF
2666 #if defined(EXTENDED_COFF)
2668 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2669 # define GCC_SYMENT SYMR
2670 # define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal)
2671 # define GCC_SYMINC(X) (1)
2672 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2673 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2677 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2678 # define GCC_SYMENT SYMENT
2679 # define GCC_OK_SYMBOL(X) \
2680 (((X).n_sclass == C_EXT) && \
2681 ((X).n_scnum > N_UNDEF) && \
2683 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
2684 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
2685 # define GCC_UNDEF_SYMBOL(X) \
2686 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
2687 # define GCC_SYMINC(X) ((X).n_numaux+1)
2688 # define GCC_SYMZERO(X) 0
2690 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */
2692 # define GCC_CHECK_HDR(X) \
2693 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2694 || (HEADER (X).f_magic == 0767 && aix64_flag))
2696 # define GCC_CHECK_HDR(X) \
2697 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2698 || (HEADER (X).f_magic == 0757 && aix64_flag))
2703 extern char *ldgetname ();
2705 /* COFF version to scan the name list of the loaded program for
2706 the symbols g++ uses for static constructors and destructors.
2708 The constructor table begins at __CTOR_LIST__ and contains a count
2709 of the number of pointers (or -1 if the constructors are built in a
2710 separate section by the linker), followed by the pointers to the
2711 constructor functions, terminated with a null pointer. The
2712 destructor table has the same format, and begins at __DTOR_LIST__. */
2715 scan_prog_file (prog_name, which_pass)
2716 const char *prog_name;
2717 enum pass which_pass;
2719 LDFILE *ldptr = NULL;
2720 int sym_index, sym_count;
2723 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
2726 #ifdef COLLECT_EXPORT_LIST
2727 /* We do not need scanning for some standard C libraries. */
2728 if (which_pass == PASS_FIRST && ignore_library (prog_name))
2731 /* On AIX we have a loop, because there is not much difference
2732 between an object and an archive. This trick allows us to
2733 eliminate scan_libraries() function. */
2737 /* Some platforms (e.g. OSF4) declare ldopen as taking a
2738 non-const char * filename parameter, even though it will not
2739 modify that string. So we must cast away const-ness here,
2740 which will cause -Wcast-qual to burp. */
2741 if ((ldptr = ldopen ((char *)prog_name, ldptr)) != NULL)
2743 if (! MY_ISCOFF (HEADER (ldptr).f_magic))
2744 fatal ("%s: not a COFF file", prog_name);
2746 if (GCC_CHECK_HDR (ldptr))
2748 sym_count = GCC_SYMBOLS (ldptr);
2749 sym_index = GCC_SYMZERO (ldptr);
2751 #ifdef COLLECT_EXPORT_LIST
2752 /* Is current archive member a shared object? */
2753 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2756 while (sym_index < sym_count)
2760 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2762 sym_index += GCC_SYMINC (symbol);
2764 if (GCC_OK_SYMBOL (symbol))
2768 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2769 continue; /* should never happen */
2771 #ifdef XCOFF_DEBUGGING_INFO
2772 /* All AIX function names have a duplicate entry
2773 beginning with a dot. */
2778 switch (is_ctor_dtor (name))
2782 add_to_list (&constructors, name);
2783 #ifdef COLLECT_EXPORT_LIST
2784 if (which_pass == PASS_OBJ)
2785 add_to_list (&exports, name);
2791 add_to_list (&destructors, name);
2792 #ifdef COLLECT_EXPORT_LIST
2793 if (which_pass == PASS_OBJ)
2794 add_to_list (&exports, name);
2798 #ifdef COLLECT_EXPORT_LIST
2800 #ifndef LD_INIT_SWITCH
2802 add_to_list (&constructors, name);
2807 #ifndef LD_INIT_SWITCH
2809 add_to_list (&destructors, name);
2816 add_to_list (&frame_tables, name);
2817 #ifdef COLLECT_EXPORT_LIST
2818 if (which_pass == PASS_OBJ)
2819 add_to_list (&exports, name);
2823 default: /* not a constructor or destructor */
2824 #ifdef COLLECT_EXPORT_LIST
2825 /* If we are building a shared object on AIX we need
2826 to explicitly export all global symbols. */
2829 if (which_pass == PASS_OBJ && (! export_flag))
2830 add_to_list (&exports, name);
2837 #if !defined(EXTENDED_COFF)
2838 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2839 symbol.n_scnum, symbol.n_sclass,
2840 (symbol.n_type ? "0" : ""), symbol.n_type,
2844 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
2845 symbol.iss, (long) symbol.value, symbol.index, name);
2850 #ifdef COLLECT_EXPORT_LIST
2853 /* If archive contains both 32-bit and 64-bit objects,
2854 we want to skip objects in other mode so mismatch normal. */
2856 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
2857 prog_name, HEADER (ldptr).f_magic, aix64_flag);
2863 fatal ("%s: cannot open as COFF file", prog_name);
2865 #ifdef COLLECT_EXPORT_LIST
2866 /* On AIX loop continues while there are more members in archive. */
2868 while (ldclose (ldptr) == FAILURE);
2870 /* Otherwise we simply close ldptr. */
2871 (void) ldclose(ldptr);
2876 #ifdef COLLECT_EXPORT_LIST
2877 /* Given a library name without "lib" prefix, this function
2878 returns a full library name including a path. */
2880 resolve_lib_name (name)
2886 for (i = 0; libpaths[i]; i++)
2887 if (libpaths[i]->max_len > l)
2888 l = libpaths[i]->max_len;
2890 lib_buf = xmalloc (l + strlen(name) + 10);
2892 for (i = 0; libpaths[i]; i++)
2894 struct prefix_list *list = libpaths[i]->plist;
2895 for (; list; list = list->next)
2897 /* The following lines are needed because path_prefix list
2898 may contain directories both with trailing '/' and
2901 if (list->prefix[strlen(list->prefix)-1] != '/')
2903 for (j = 0; libexts[j]; j++)
2905 sprintf (lib_buf, "%s%slib%s.%s",
2906 list->prefix, p, name, libexts[j]);
2907 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
2908 if (file_exists (lib_buf))
2910 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
2917 fprintf (stderr, "not found\n");
2919 fatal ("Library lib%s not found", name);
2923 /* Array of standard AIX libraries which should not
2924 be scanned for ctors/dtors. */
2925 static const char *aix_std_libs[] = {
2933 "/usr/lib/libc_r.a",
2934 "/usr/lib/libm_r.a",
2935 "/usr/lib/threads/libc.a",
2936 "/usr/ccs/lib/libc.a",
2937 "/usr/ccs/lib/libm.a",
2938 "/usr/ccs/lib/libc_r.a",
2939 "/usr/ccs/lib/libm_r.a",
2943 /* This function checks the filename and returns 1
2944 if this name matches the location of a standard AIX library. */
2946 ignore_library (name)
2949 const char **p = &aix_std_libs[0];
2950 while (*p++ != NULL)
2951 if (! strcmp (name, *p)) return 1;
2956 #endif /* OBJECT_FORMAT_COFF */
2960 * OSF/rose specific stuff.
2963 #ifdef OBJECT_FORMAT_ROSE
2965 /* Union of the various load commands */
2967 typedef union load_union
2969 ldc_header_t hdr; /* common header */
2970 load_cmd_map_command_t map; /* map indexing other load cmds */
2971 interpreter_command_t iprtr; /* interpreter pathname */
2972 strings_command_t str; /* load commands strings section */
2973 region_command_t region; /* region load command */
2974 reloc_command_t reloc; /* relocation section */
2975 package_command_t pkg; /* package load command */
2976 symbols_command_t sym; /* symbol sections */
2977 entry_command_t ent; /* program start section */
2978 gen_info_command_t info; /* object information */
2979 func_table_command_t func; /* function constructors/destructors */
2982 /* Structure to point to load command and data section in memory. */
2984 typedef struct load_all
2986 load_union_t *load; /* load command */
2987 char *section; /* pointer to section */
2990 /* Structure to contain information about a file mapped into memory. */
2994 char *start; /* start of map */
2995 char *name; /* filename */
2996 long size; /* size of the file */
2997 long rounded_size; /* size rounded to page boundary */
2998 int fd; /* file descriptor */
2999 int rw; /* != 0 if opened read/write */
3000 int use_mmap; /* != 0 if mmap'ed */
3003 extern int decode_mach_o_hdr ();
3004 extern int encode_mach_o_hdr ();
3006 static void add_func_table PARAMS ((mo_header_t *, load_all_t *,
3007 symbol_info_t *, int));
3008 static void print_header PARAMS ((mo_header_t *));
3009 static void print_load_command PARAMS ((load_union_t *, size_t, int));
3010 static void bad_header PARAMS ((int));
3011 static struct file_info *read_file PARAMS ((const char *, int, int));
3012 static void end_file PARAMS ((struct file_info *));
3014 /* OSF/rose specific version to scan the name list of the loaded
3015 program for the symbols g++ uses for static constructors and
3018 The constructor table begins at __CTOR_LIST__ and contains a count
3019 of the number of pointers (or -1 if the constructors are built in a
3020 separate section by the linker), followed by the pointers to the
3021 constructor functions, terminated with a null pointer. The
3022 destructor table has the same format, and begins at __DTOR_LIST__. */
3025 scan_prog_file (prog_name, which_pass)
3026 const char *prog_name;
3027 enum pass which_pass;
3031 load_all_t *load_array;
3032 load_all_t *load_end;
3033 load_all_t *load_cmd;
3034 int symbol_load_cmds;
3040 struct file_info *obj_file;
3042 mo_lcid_t cmd_strings = -1;
3043 symbol_info_t *main_sym = 0;
3044 int rw = (which_pass != PASS_FIRST);
3046 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3048 fatal_perror ("open %s", prog_name);
3050 obj_file = read_file (prog_name, prog_fd, rw);
3051 obj = obj_file->start;
3053 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3054 if (status != MO_HDR_CONV_SUCCESS)
3055 bad_header (status);
3058 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3059 since the hardware will automatically swap bytes for us on loading little endian
3062 #ifndef CROSS_COMPILE
3063 if (hdr.moh_magic != MOH_MAGIC_MSB
3064 || hdr.moh_header_version != MOH_HEADER_VERSION
3065 || hdr.moh_byte_order != OUR_BYTE_ORDER
3066 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3067 || hdr.moh_cpu_type != OUR_CPU_TYPE
3068 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3069 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3071 fatal ("incompatibilities between object file & expected values");
3076 print_header (&hdr);
3078 offset = hdr.moh_first_cmd_off;
3079 load_end = load_array
3080 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3082 /* Build array of load commands, calculating the offsets */
3083 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3085 load_union_t *load_hdr; /* load command header */
3087 load_cmd = load_end++;
3088 load_hdr = (load_union_t *) (obj + offset);
3090 /* If modifying the program file, copy the header. */
3093 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3094 memcpy ((char *)ptr, (char *)load_hdr, load_hdr->hdr.ldci_cmd_size);
3097 /* null out old command map, because we will rewrite at the end. */
3098 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3100 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3101 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3105 load_cmd->load = load_hdr;
3106 if (load_hdr->hdr.ldci_section_off > 0)
3107 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3110 print_load_command (load_hdr, offset, i);
3112 offset += load_hdr->hdr.ldci_cmd_size;
3115 /* If the last command is the load command map and is not undefined,
3116 decrement the count of load commands. */
3117 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3120 hdr.moh_n_load_cmds--;
3123 /* Go through and process each symbol table section. */
3124 symbol_load_cmds = 0;
3125 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3127 load_union_t *load_hdr = load_cmd->load;
3129 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3135 const char *kind = "unknown";
3137 switch (load_hdr->sym.symc_kind)
3139 case SYMC_IMPORTS: kind = "imports"; break;
3140 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3141 case SYMC_STABS: kind = "stabs"; break;
3144 notice ("\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3145 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3148 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3151 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3152 if (str_sect == (char *) 0)
3153 fatal ("string section missing");
3155 if (load_cmd->section == (char *) 0)
3156 fatal ("section pointer missing");
3158 num_syms = load_hdr->sym.symc_nentries;
3159 for (i = 0; i < num_syms; i++)
3161 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3162 char *name = sym->si_name.symbol_name + str_sect;
3169 char *n = name + strlen (name) - strlen (NAME__MAIN);
3171 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3181 switch (is_ctor_dtor (name))
3184 add_to_list (&constructors, name);
3188 add_to_list (&destructors, name);
3191 default: /* not a constructor or destructor */
3197 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3198 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3203 if (symbol_load_cmds == 0)
3204 fatal ("no symbol table found");
3206 /* Update the program file now, rewrite header and load commands. At present,
3207 we assume that there is enough space after the last load command to insert
3208 one more. Since the first section written out is page aligned, and the
3209 number of load commands is small, this is ok for the present. */
3213 load_union_t *load_map;
3216 if (cmd_strings == -1)
3217 fatal ("no cmd_strings found");
3219 /* Add __main to initializer list.
3220 If we are building a program instead of a shared library, do not
3221 do anything, since in the current version, you cannot do mallocs
3222 and such in the constructors. */
3224 if (main_sym != (symbol_info_t *) 0
3225 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3226 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3229 notice ("\nUpdating header and load commands.\n\n");
3231 hdr.moh_n_load_cmds++;
3232 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3234 /* Create new load command map. */
3236 notice ("load command map, %d cmds, new size %ld.\n",
3237 (int) hdr.moh_n_load_cmds, (long) size);
3239 load_map = (load_union_t *) xcalloc (1, size);
3240 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3241 load_map->map.ldc_header.ldci_cmd_size = size;
3242 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3243 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3244 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3246 offset = hdr.moh_first_cmd_off;
3247 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3249 load_map->map.lcm_map[i] = offset;
3250 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3251 hdr.moh_load_map_cmd_off = offset;
3253 offset += load_array[i].load->hdr.ldci_cmd_size;
3256 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3259 print_header (&hdr);
3262 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3263 if (status != MO_HDR_CONV_SUCCESS)
3264 bad_header (status);
3267 notice ("writing load commands.\n\n");
3269 /* Write load commands */
3270 offset = hdr.moh_first_cmd_off;
3271 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3273 load_union_t *load_hdr = load_array[i].load;
3274 size_t size = load_hdr->hdr.ldci_cmd_size;
3277 print_load_command (load_hdr, offset, i);
3279 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3284 end_file (obj_file);
3286 if (close (prog_fd))
3287 fatal_perror ("close %s", prog_name);
3290 fprintf (stderr, "\n");
3294 /* Add a function table to the load commands to call a function
3295 on initiation or termination of the process. */
3298 add_func_table (hdr_p, load_array, sym, type)
3299 mo_header_t *hdr_p; /* pointer to global header */
3300 load_all_t *load_array; /* array of ptrs to load cmds */
3301 symbol_info_t *sym; /* pointer to symbol entry */
3302 int type; /* fntc_type value */
3304 /* Add a new load command. */
3305 int num_cmds = ++hdr_p->moh_n_load_cmds;
3306 int load_index = num_cmds - 1;
3307 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3308 load_union_t *ptr = xcalloc (1, size);
3309 load_all_t *load_cmd;
3312 /* Set the unresolved address bit in the header to force the loader to be
3313 used, since kernel exec does not call the initialization functions. */
3314 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3316 load_cmd = &load_array[load_index];
3317 load_cmd->load = ptr;
3318 load_cmd->section = (char *) 0;
3320 /* Fill in func table load command. */
3321 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3322 ptr->func.ldc_header.ldci_cmd_size = size;
3323 ptr->func.ldc_header.ldci_section_off = 0;
3324 ptr->func.ldc_header.ldci_section_len = 0;
3325 ptr->func.fntc_type = type;
3326 ptr->func.fntc_nentries = 1;
3328 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3329 /* Is the symbol already expressed as (region, offset)? */
3330 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3332 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3333 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3336 /* If not, figure out which region it's in. */
3339 mo_vm_addr_t addr = sym->si_value.abs_val;
3342 for (i = 0; i < load_index; i++)
3344 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3346 region_command_t *region_ptr = &load_array[i].load->region;
3348 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3349 && addr >= region_ptr->regc_addr.vm_addr
3350 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3352 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3353 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3361 fatal ("could not convert 0x%l.8x into a region", addr);
3365 notice ("%s function, region %d, offset = %ld (0x%.8lx)\n",
3366 type == FNTC_INITIALIZATION ? "init" : "term",
3367 (int) ptr->func.fntc_entry_loc[i].adr_lcid,
3368 (long) ptr->func.fntc_entry_loc[i].adr_sctoff,
3369 (long) ptr->func.fntc_entry_loc[i].adr_sctoff);
3374 /* Print the global header for an OSF/rose object. */
3377 print_header (hdr_ptr)
3378 mo_header_t *hdr_ptr;
3380 fprintf (stderr, "\nglobal header:\n");
3381 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3382 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3383 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3384 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3385 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3386 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3387 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3388 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3389 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3390 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3391 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3392 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3393 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3394 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3395 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3397 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3398 fprintf (stderr, ", relocatable");
3400 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3401 fprintf (stderr, ", linkable");
3403 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3404 fprintf (stderr, ", execable");
3406 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3407 fprintf (stderr, ", executable");
3409 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3410 fprintf (stderr, ", unresolved");
3412 fprintf (stderr, "\n\n");
3417 /* Print a short summary of a load command. */
3420 print_load_command (load_hdr, offset, number)
3421 load_union_t *load_hdr;
3425 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3426 const char *type_str = (char *) 0;
3430 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3431 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3432 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3433 case LDC_STRINGS: type_str = "STRINGS"; break;
3434 case LDC_REGION: type_str = "REGION"; break;
3435 case LDC_RELOC: type_str = "RELOC"; break;
3436 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3437 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3438 case LDC_ENTRY: type_str = "ENTRY"; break;
3439 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3440 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3444 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3446 (long) load_hdr->hdr.ldci_cmd_size,
3448 (long) load_hdr->hdr.ldci_section_off,
3449 (long) load_hdr->hdr.ldci_section_len);
3451 if (type_str == (char *) 0)
3452 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3454 else if (type != LDC_REGION)
3455 fprintf (stderr, ", ty: %s\n", type_str);
3459 const char *region = "";
3460 switch (load_hdr->region.regc_usage_type)
3462 case REG_TEXT_T: region = ", .text"; break;
3463 case REG_DATA_T: region = ", .data"; break;
3464 case REG_BSS_T: region = ", .bss"; break;
3465 case REG_GLUE_T: region = ", .glue"; break;
3466 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3467 case REG_RDATA_T: region = ", .rdata"; break;
3468 case REG_SDATA_T: region = ", .sdata"; break;
3469 case REG_SBSS_T: region = ", .sbss"; break;
3473 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3475 (long) load_hdr->region.regc_vm_addr,
3476 (long) load_hdr->region.regc_vm_size,
3484 /* Fatal error when {en,de}code_mach_o_header fails. */
3492 case MO_ERROR_BAD_MAGIC: fatal ("bad magic number");
3493 case MO_ERROR_BAD_HDR_VERS: fatal ("bad header version");
3494 case MO_ERROR_BAD_RAW_HDR_VERS: fatal ("bad raw header version");
3495 case MO_ERROR_BUF2SML: fatal ("raw header buffer too small");
3496 case MO_ERROR_OLD_RAW_HDR_FILE: fatal ("old raw header file");
3497 case MO_ERROR_UNSUPPORTED_VERS: fatal ("unsupported version");
3499 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3504 /* Read a file into a memory buffer. */
3506 static struct file_info *
3507 read_file (name, fd, rw)
3508 const char *name; /* filename */
3509 int fd; /* file descriptor */
3510 int rw; /* read/write */
3512 struct stat stat_pkt;
3513 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3515 static int page_size;
3518 if (fstat (fd, &stat_pkt) < 0)
3519 fatal_perror ("fstat %s", name);
3522 p->size = stat_pkt.st_size;
3523 p->rounded_size = stat_pkt.st_size;
3529 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3532 page_size = sysconf (_SC_PAGE_SIZE);
3534 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3535 p->start = mmap ((caddr_t) 0,
3536 (rw) ? p->rounded_size : p->size,
3537 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3538 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3542 if (p->start != (char *) 0 && p->start != (char *) -1)
3546 #endif /* USE_MMAP */
3551 fprintf (stderr, "read %s\n", name);
3554 p->start = xmalloc (p->size);
3555 if (lseek (fd, 0L, SEEK_SET) < 0)
3556 fatal_perror ("lseek %s 0", name);
3558 len = read (fd, p->start, p->size);
3560 fatal_perror ("read %s", name);
3563 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3569 /* Do anything necessary to write a file back from memory. */
3573 struct file_info *ptr; /* file information block */
3581 fprintf (stderr, "msync %s\n", ptr->name);
3583 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3584 fatal_perror ("msync %s", ptr->name);
3588 fprintf (stderr, "munmap %s\n", ptr->name);
3590 if (munmap (ptr->start, ptr->size))
3591 fatal_perror ("munmap %s", ptr->name);
3594 #endif /* USE_MMAP */
3601 fprintf (stderr, "write %s\n", ptr->name);
3603 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3604 fatal_perror ("lseek %s 0", ptr->name);
3606 len = write (ptr->fd, ptr->start, ptr->size);
3608 fatal_perror ("write %s", ptr->name);
3610 if (len != ptr->size)
3611 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3620 #endif /* OBJECT_FORMAT_ROSE */