1 /* Collect static initialization info into data structures that can be
2 traversed by C++ initialization and finalization routines.
3 Copyright (C) 1992, 93-97, 1998 Free Software Foundation, Inc.
4 Contributed by Chris Smith (csmith@convex.com).
5 Heavily modified by Michael Meissner (meissner@cygnus.com),
6 Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com).
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
26 /* Build tables of static constructors and destructors and run ld. */
37 #include "gansidecl.h"
43 extern char *sys_errlist[];
49 /* Obstack allocation and deallocation routines. */
50 #define obstack_chunk_alloc xmalloc
51 #define obstack_chunk_free free
58 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
61 #define WTERMSIG(S) ((S) & 0x7f)
64 #define WIFEXITED(S) (((S) & 0xff) == 0)
67 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
70 extern char *choose_temp_base ();
72 /* On certain systems, we have code that works by scanning the object file
73 directly. But this code uses system-specific header files and library
74 functions, so turn it off in a cross-compiler. Likewise, the names of
75 the utilities are not correct for a cross-compiler; we have to hope that
76 cross-versions are in the proper directories. */
79 #undef SUNOS4_SHARED_LIBRARIES
80 #undef OBJECT_FORMAT_COFF
81 #undef OBJECT_FORMAT_ROSE
83 #undef REAL_LD_FILE_NAME
84 #undef REAL_NM_FILE_NAME
85 #undef REAL_STRIP_FILE_NAME
88 /* If we cannot use a special method, use the ordinary one:
89 run nm to find what symbols are present.
90 In a cross-compiler, this means you need a cross nm,
91 but that is not quite as unpleasant as special headers. */
93 #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
94 #define OBJECT_FORMAT_NONE
97 #ifdef OBJECT_FORMAT_COFF
106 /* Many versions of ldfcn.h define these. */
114 /* Some systems have an ISCOFF macro, but others do not. In some cases
115 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
116 that either do not have an ISCOFF macro in /usr/include or for those
117 where it is wrong. */
120 #define MY_ISCOFF(X) ISCOFF (X)
123 #endif /* OBJECT_FORMAT_COFF */
125 #ifdef OBJECT_FORMAT_ROSE
132 #include <sys/mman.h>
136 #include <mach_o_format.h>
137 #include <mach_o_header.h>
138 #include <mach_o_vals.h>
139 #include <mach_o_types.h>
141 #endif /* OBJECT_FORMAT_ROSE */
143 #ifdef OBJECT_FORMAT_NONE
145 /* Default flags to pass to nm. */
147 #define NM_FLAGS "-p"
150 #endif /* OBJECT_FORMAT_NONE */
152 /* Some systems use __main in a way incompatible with its use in gcc, in these
153 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
154 give the same symbol without quotes for an alternative entry point. You
155 must define both, or neither. */
157 #define NAME__MAIN "__main"
158 #define SYMBOL__MAIN __main
161 #if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES
162 #define SCAN_LIBRARIES
166 int do_collecting = 1;
168 int do_collecting = 0;
171 /* Linked lists of constructor and destructor names. */
187 /* Enumeration giving which pass this is for scanning the program file. */
190 PASS_FIRST, /* without constructors */
191 PASS_OBJ, /* individual objects */
192 PASS_LIB, /* looking for shared libraries */
193 PASS_SECOND /* with constructors linked in */
196 #ifndef NO_SYS_SIGLIST
197 #ifndef SYS_SIGLIST_DECLARED
198 extern char *sys_siglist[];
201 extern char *version_string;
203 int vflag; /* true if -v */
204 static int rflag; /* true if -r */
205 static int strip_flag; /* true if -s */
206 #ifdef COLLECT_EXPORT_LIST
207 static int export_flag; /* true if -bE */
210 int debug; /* true if -debug */
212 static int shared_obj; /* true if -shared */
214 static int temp_filename_length; /* Length of temp_filename */
215 static char *temp_filename; /* Base of temp filenames */
216 static char *c_file; /* <xxx>.c for constructor/destructor list. */
217 static char *o_file; /* <xxx>.o for constructor/destructor list. */
218 #ifdef COLLECT_EXPORT_LIST
219 static char *export_file; /* <xxx>.x for AIX export list. */
220 static char *import_file; /* <xxx>.p for AIX import list. */
222 char *ldout; /* File for ld errors. */
223 static char *output_file; /* Output file for ld. */
224 static char *nm_file_name; /* pathname of nm */
226 static char *ldd_file_name; /* pathname of ldd (or equivalent) */
228 static char *strip_file_name; /* pathname of strip */
229 char *c_file_name; /* pathname of gcc */
230 static char *initname, *fininame; /* names of init and fini funcs */
232 static struct head constructors; /* list of constructors found */
233 static struct head destructors; /* list of destructors found */
234 #ifdef COLLECT_EXPORT_LIST
235 static struct head exports; /* list of exported symbols */
236 static struct head imports; /* list of imported symbols */
237 static struct head undefined; /* list of undefined symbols */
239 static struct head frame_tables; /* list of frame unwind info tables */
241 struct obstack temporary_obstack;
242 struct obstack permanent_obstack;
243 char * temporary_firstobj;
245 /* Defined in the automatically-generated underscore.c. */
246 extern int prepends_underscore;
248 extern char *getenv ();
249 extern char *mktemp ();
250 extern FILE *fdopen ();
252 #ifndef GET_ENVIRONMENT
253 #define GET_ENVIRONMENT(ENV_VALUE,ENV_NAME) ENV_VALUE = getenv (ENV_NAME)
256 /* Structure to hold all the directories in which to search for files to
261 char *prefix; /* String to prepend to the path. */
262 struct prefix_list *next; /* Next in linked list. */
267 struct prefix_list *plist; /* List of prefixes to try */
268 int max_len; /* Max length of a prefix in PLIST */
269 char *name; /* Name of this list (used in config stuff) */
272 #ifdef COLLECT_EXPORT_LIST
273 /* Lists to keep libraries to be scanned for global constructors/destructors. */
274 static struct head libs; /* list of libraries */
275 static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */
276 static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */
277 static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs,
278 &libpath_lib_dirs, NULL};
279 static char *libexts[3] = {"a", "so", NULL}; /* possible library extentions */
282 void collect_exit PROTO((int));
283 void collect_execute PROTO((char *, char **, char *));
284 void dump_file PROTO((char *));
285 static void handler PROTO((int));
286 static int is_ctor_dtor PROTO((char *));
287 static char *find_a_file PROTO((struct path_prefix *, char *));
288 static void add_prefix PROTO((struct path_prefix *, char *));
289 static void prefix_from_env PROTO((char *, struct path_prefix *));
290 static void prefix_from_string PROTO((char *, struct path_prefix *));
291 static void do_wait PROTO((char *));
292 static void fork_execute PROTO((char *, char **));
293 static void maybe_unlink PROTO((char *));
294 static void add_to_list PROTO((struct head *, char *));
295 static void write_list PROTO((FILE *, char *, struct id *));
296 static void dump_list PROTO((FILE *, char *, struct id *));
297 static void dump_prefix_list PROTO((FILE *, char *, struct prefix_list *));
298 static void write_list_with_asm PROTO((FILE *, char *, struct id *));
299 static void write_c_file PROTO((FILE *, char *));
300 static void scan_prog_file PROTO((char *, enum pass));
301 #ifdef SCAN_LIBRARIES
302 static void scan_libraries PROTO((char *));
304 #ifdef COLLECT_EXPORT_LIST
305 static int is_in_list PROTO((char *, struct id *));
306 static void write_export_file PROTO((FILE *));
307 static void write_import_file PROTO((FILE *));
308 static char *resolve_lib_name PROTO((char *));
309 static int use_import_list PROTO((char *));
310 static int ignore_library PROTO((char *));
330 while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
333 close (fdtmp[--fdx]);
349 static char buffer[30];
353 if (e > 0 && e < sys_nerr)
354 return sys_errlist[e];
356 sprintf (buffer, "Unknown error %d", e);
361 /* Delete tempfiles and exit function. */
364 collect_exit (status)
367 if (c_file != 0 && c_file[0])
368 maybe_unlink (c_file);
370 if (o_file != 0 && o_file[0])
371 maybe_unlink (o_file);
373 #ifdef COLLECT_EXPORT_LIST
374 if (export_file != 0 && export_file[0])
375 maybe_unlink (export_file);
377 if (import_file != 0 && import_file[0])
378 maybe_unlink (import_file);
381 if (ldout != 0 && ldout[0])
384 maybe_unlink (ldout);
387 if (status != 0 && output_file != 0 && output_file[0])
388 maybe_unlink (output_file);
394 /* Die when sys call fails. */
397 fatal_perror (string, arg1, arg2, arg3)
398 char *string, *arg1, *arg2, *arg3;
402 fprintf (stderr, "collect2: ");
403 fprintf (stderr, string, arg1, arg2, arg3);
404 fprintf (stderr, ": %s\n", my_strerror (e));
405 collect_exit (FATAL_EXIT_CODE);
411 fatal (string, arg1, arg2, arg3)
412 char *string, *arg1, *arg2, *arg3;
414 fprintf (stderr, "collect2: ");
415 fprintf (stderr, string, arg1, arg2, arg3);
416 fprintf (stderr, "\n");
417 collect_exit (FATAL_EXIT_CODE);
420 /* Write error message. */
423 error (string, arg1, arg2, arg3, arg4)
424 char *string, *arg1, *arg2, *arg3, *arg4;
426 fprintf (stderr, "collect2: ");
427 fprintf (stderr, string, arg1, arg2, arg3, arg4);
428 fprintf (stderr, "\n");
431 /* In case obstack is linked in, and abort is defined to fancy_abort,
432 provide a default entry. */
437 fatal ("internal error");
445 if (c_file != 0 && c_file[0])
446 maybe_unlink (c_file);
448 if (o_file != 0 && o_file[0])
449 maybe_unlink (o_file);
451 if (ldout != 0 && ldout[0])
452 maybe_unlink (ldout);
454 #ifdef COLLECT_EXPORT_LIST
455 if (export_file != 0 && export_file[0])
456 maybe_unlink (export_file);
458 if (import_file != 0 && import_file[0])
459 maybe_unlink (import_file);
462 signal (signo, SIG_DFL);
463 kill (getpid (), signo);
468 xcalloc (size1, size2)
471 char *ptr = (char *) calloc (size1, size2);
475 fatal ("out of memory");
483 char *ptr = (char *) malloc (size);
487 fatal ("out of memory");
496 register char *value = (char *) realloc (ptr, size);
498 fatal ("virtual memory exhausted");
506 return access (name, R_OK) == 0;
509 /* Make a copy of a string INPUT with size SIZE. */
512 savestring (input, size)
516 char *output = (char *) xmalloc (size + 1);
517 bcopy (input, output, size);
522 /* Parse a reasonable subset of shell quoting syntax. */
539 obstack_1grow (&temporary_obstack, c);
540 else if (! inside && c == ' ')
542 else if (! inside && c == '\\')
547 obstack_1grow (&temporary_obstack, c);
550 obstack_1grow (&temporary_obstack, '\0');
552 return obstack_finish (&temporary_obstack);
559 FILE *stream = fopen (name, "r");
560 int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
567 while (c = getc (stream),
568 c != EOF && (ISALNUM (c) || c == '_' || c == '$' || c == '.'))
569 obstack_1grow (&temporary_obstack, c);
570 if (obstack_object_size (&temporary_obstack) > 0)
572 char *word, *p, *result;
573 obstack_1grow (&temporary_obstack, '\0');
574 word = obstack_finish (&temporary_obstack);
577 ++word, putc ('.', stderr);
579 if (*p == '_' && prepends_underscore)
585 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
590 fputs (result, stderr);
592 diff = strlen (word) - strlen (result);
594 --diff, putc (' ', stderr);
595 while (diff < 0 && c == ' ')
596 ++diff, c = getc (stream);
601 fputs (word, stderr);
604 obstack_free (&temporary_obstack, temporary_firstobj);
613 /* Decide whether the given symbol is:
614 a constructor (1), a destructor (2), or neither (0). */
620 struct names { char *name; int len; int ret; int two_underscores; };
622 register struct names *p;
624 register char *orig_s = s;
626 static struct names special[] = {
627 #ifdef NO_DOLLAR_IN_LABEL
628 #ifdef NO_DOT_IN_LABEL
629 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
630 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
631 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
633 { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
634 { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
635 { "GLOBAL_.F.", sizeof ("GLOBAL_.F.")-1, 5, 0 },
638 { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
639 { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
640 { "GLOBAL_$F$", sizeof ("GLOBAL_$F$")-1, 5, 0 },
642 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
643 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
644 #ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
645 cfront has its own linker procedure to collect them;
646 if collect2 gets them too, they get collected twice
647 when the cfront procedure is run and the compiler used
648 for linking happens to be GCC. */
649 { "sti__", sizeof ("sti__")-1, 1, 1 },
650 { "std__", sizeof ("std__")-1, 2, 1 },
651 #endif /* CFRONT_LOSSAGE */
655 while ((ch = *s) == '_')
661 for (p = &special[0]; p->len > 0; p++)
664 && (!p->two_underscores || ((s - orig_s) >= 2))
665 && strncmp(s, p->name, p->len) == 0)
673 /* Routine to add variables to the environment. */
681 #ifndef VMS /* nor about VMS */
683 extern char **environ;
684 char **old_environ = environ;
691 while ((ch = *p++) != '\0' && ch != '=')
697 /* Search for replacing an existing environment variable, and
698 count the number of total environment variables. */
699 for (envp = old_environ; *envp; envp++)
702 if (!strncmp (str, *envp, name_len))
709 /* Add a new environment variable */
710 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
712 bcopy ((char *) old_environ, (char *) (environ + 1),
713 sizeof (char *) * (num_envs+1));
719 #endif /* HAVE_PUTENV */
721 /* By default, colon separates directories in a path. */
722 #ifndef PATH_SEPARATOR
723 #define PATH_SEPARATOR ':'
726 /* We maintain two prefix lists: one from COMPILER_PATH environment variable
727 and one from the PATH variable. */
729 static struct path_prefix cpath, path;
732 /* This is the name of the target machine. We use it to form the name
733 of the files to execute. */
735 static char *target_machine = TARGET_MACHINE;
738 /* Search for NAME using prefix list PPREFIX. We only look for executable
741 Return 0 if not found, otherwise return its name, allocated with malloc. */
744 find_a_file (pprefix, name)
745 struct path_prefix *pprefix;
749 struct prefix_list *pl;
750 int len = pprefix->max_len + strlen (name) + 1;
753 fprintf (stderr, "Looking for '%s'\n", name);
755 #ifdef EXECUTABLE_SUFFIX
756 len += strlen (EXECUTABLE_SUFFIX);
759 temp = xmalloc (len);
761 /* Determine the filename to execute (special case for absolute paths). */
765 || (DIR_SEPARATOR == '\\' && name[1] == ':'
766 && (name[2] == DIR_SEPARATOR || name[2] == '/'))
770 if (access (name, X_OK) == 0)
775 fprintf (stderr, " - found: absolute path\n");
781 fprintf (stderr, " - failed to locate using absolute path\n");
784 for (pl = pprefix->plist; pl; pl = pl->next)
786 strcpy (temp, pl->prefix);
789 if (access (temp, X_OK) == 0)
792 #ifdef EXECUTABLE_SUFFIX
793 /* Some systems have a suffix for executable files.
794 So try appending that. */
795 strcat (temp, EXECUTABLE_SUFFIX);
797 if (access (temp, X_OK) == 0)
802 if (debug && pprefix->plist == NULL)
803 fprintf (stderr, " - failed: no entries in prefix list\n");
809 /* Add an entry for PREFIX to prefix list PPREFIX. */
812 add_prefix (pprefix, prefix)
813 struct path_prefix *pprefix;
816 struct prefix_list *pl, **prev;
821 for (pl = pprefix->plist; pl->next; pl = pl->next)
826 prev = &pprefix->plist;
828 /* Keep track of the longest prefix */
830 len = strlen (prefix);
831 if (len > pprefix->max_len)
832 pprefix->max_len = len;
834 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
835 pl->prefix = savestring (prefix, len);
840 pl->next = (struct prefix_list *) 0;
844 /* Take the value of the environment variable ENV, break it into a path, and
845 add of the entries to PPREFIX. */
848 prefix_from_env (env, pprefix)
850 struct path_prefix *pprefix;
853 GET_ENVIRONMENT (p, env);
856 prefix_from_string (p, pprefix);
860 prefix_from_string (p, pprefix)
862 struct path_prefix *pprefix;
865 char *nstore = (char *) xmalloc (strlen (p) + 3);
868 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
873 if (*endp == PATH_SEPARATOR || *endp == 0)
875 strncpy (nstore, startp, endp-startp);
878 strcpy (nstore, "./");
880 else if (endp[-1] != '/')
882 nstore[endp-startp] = '/';
883 nstore[endp-startp+1] = 0;
886 nstore[endp-startp] = 0;
889 fprintf (stderr, " - add prefix: %s\n", nstore);
891 add_prefix (pprefix, nstore);
894 endp = startp = endp + 1;
908 char *ld_suffix = "ld";
909 char *full_ld_suffix = ld_suffix;
910 char *real_ld_suffix = "real-ld";
911 char *collect_ld_suffix = "collect-ld";
912 char *nm_suffix = "nm";
913 char *full_nm_suffix = nm_suffix;
914 char *gnm_suffix = "gnm";
915 char *full_gnm_suffix = gnm_suffix;
917 char *ldd_suffix = LDD_SUFFIX;
918 char *full_ldd_suffix = ldd_suffix;
920 char *strip_suffix = "strip";
921 char *full_strip_suffix = strip_suffix;
922 char *gstrip_suffix = "gstrip";
923 char *full_gstrip_suffix = gstrip_suffix;
926 #ifdef COLLECT_EXPORT_LIST
934 char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+3);
935 char **ld1 = ld1_argv;
936 char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+6);
937 char **ld2 = ld2_argv;
938 char **object_lst = (char **) xcalloc (sizeof (char *), argc);
939 char **object = object_lst;
941 int num_c_args = argc+7;
947 /* Parse command line early for instances of -debug. This allows
948 the debug flag to be set before functions like find_a_file()
953 for (i = 1; argv[i] != NULL; i ++)
954 if (! strcmp (argv[i], "-debug"))
959 #ifndef DEFAULT_A_OUT_NAME
960 output_file = "a.out";
962 output_file = DEFAULT_A_OUT_NAME;
965 obstack_begin (&temporary_obstack, 0);
966 obstack_begin (&permanent_obstack, 0);
967 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
969 current_demangling_style = gnu_demangling;
970 p = getenv ("COLLECT_GCC_OPTIONS");
973 char *q = extract_string (&p);
974 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
977 obstack_free (&temporary_obstack, temporary_firstobj);
980 c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
983 fatal ("no arguments");
986 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
987 signal (SIGQUIT, handler);
989 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
990 signal (SIGINT, handler);
992 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
993 signal (SIGALRM, handler);
996 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
997 signal (SIGHUP, handler);
999 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
1000 signal (SIGSEGV, handler);
1002 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
1003 signal (SIGBUS, handler);
1006 /* Extract COMPILER_PATH and PATH into our prefix list. */
1007 prefix_from_env ("COMPILER_PATH", &cpath);
1008 prefix_from_env ("PATH", &path);
1010 #ifdef CROSS_COMPILE
1011 /* If we look for a program in the compiler directories, we just use
1012 the short name, since these directories are already system-specific.
1013 But it we look for a program in the system directories, we need to
1014 qualify the program name with the target machine. */
1017 = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
1018 strcpy (full_ld_suffix, target_machine);
1019 strcat (full_ld_suffix, "-");
1020 strcat (full_ld_suffix, ld_suffix);
1024 = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
1025 strcpy (full_gld_suffix, target_machine);
1026 strcat (full_gld_suffix, "-");
1027 strcat (full_gld_suffix, gld_suffix);
1031 = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
1032 strcpy (full_nm_suffix, target_machine);
1033 strcat (full_nm_suffix, "-");
1034 strcat (full_nm_suffix, nm_suffix);
1037 = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
1038 strcpy (full_gnm_suffix, target_machine);
1039 strcat (full_gnm_suffix, "-");
1040 strcat (full_gnm_suffix, gnm_suffix);
1044 = xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1);
1045 strcpy (full_ldd_suffix, target_machine);
1046 strcat (full_ldd_suffix, "-");
1047 strcat (full_ldd_suffix, ldd_suffix);
1051 = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
1052 strcpy (full_strip_suffix, target_machine);
1053 strcat (full_strip_suffix, "-");
1054 strcat (full_strip_suffix, strip_suffix);
1057 = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
1058 strcpy (full_gstrip_suffix, target_machine);
1059 strcat (full_gstrip_suffix, "-");
1060 strcat (full_gstrip_suffix, gstrip_suffix);
1061 #endif /* CROSS_COMPILE */
1063 /* Try to discover a valid linker/nm/strip to use. */
1065 /* Maybe we know the right file to use (if not cross). */
1066 #ifdef REAL_LD_FILE_NAME
1067 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
1068 if (ld_file_name == 0)
1070 /* Search the (target-specific) compiler dirs for ld'. */
1071 ld_file_name = find_a_file (&cpath, real_ld_suffix);
1072 /* Likewise for `collect-ld'. */
1073 if (ld_file_name == 0)
1074 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
1075 /* Search the compiler directories for `ld'. We have protection against
1076 recursive calls in find_a_file. */
1077 if (ld_file_name == 0)
1078 ld_file_name = find_a_file (&cpath, ld_suffix);
1079 /* Search the ordinary system bin directories
1080 for `ld' (if native linking) or `TARGET-ld' (if cross). */
1081 if (ld_file_name == 0)
1082 ld_file_name = find_a_file (&path, full_ld_suffix);
1084 #ifdef REAL_NM_FILE_NAME
1085 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
1086 if (nm_file_name == 0)
1088 nm_file_name = find_a_file (&cpath, gnm_suffix);
1089 if (nm_file_name == 0)
1090 nm_file_name = find_a_file (&path, full_gnm_suffix);
1091 if (nm_file_name == 0)
1092 nm_file_name = find_a_file (&cpath, nm_suffix);
1093 if (nm_file_name == 0)
1094 nm_file_name = find_a_file (&path, full_nm_suffix);
1097 ldd_file_name = find_a_file (&cpath, ldd_suffix);
1098 if (ldd_file_name == 0)
1099 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1102 #ifdef REAL_STRIP_FILE_NAME
1103 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1104 if (strip_file_name == 0)
1106 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1107 if (strip_file_name == 0)
1108 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1109 if (strip_file_name == 0)
1110 strip_file_name = find_a_file (&cpath, strip_suffix);
1111 if (strip_file_name == 0)
1112 strip_file_name = find_a_file (&path, full_strip_suffix);
1114 /* Determine the full path name of the C compiler to use. */
1115 c_file_name = getenv ("COLLECT_GCC");
1116 if (c_file_name == 0)
1118 #ifdef CROSS_COMPILE
1119 c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
1120 strcpy (c_file_name, target_machine);
1121 strcat (c_file_name, "-gcc");
1123 c_file_name = "gcc";
1127 p = find_a_file (&cpath, c_file_name);
1129 /* Here it should be safe to use the system search path since we should have
1130 already qualified the name of the compiler when it is needed. */
1132 p = find_a_file (&path, c_file_name);
1137 *ld1++ = *ld2++ = ld_file_name;
1139 /* Make temp file names. */
1140 temp_filename = choose_temp_base ();
1141 temp_filename_length = strlen (temp_filename);
1142 c_file = xcalloc (temp_filename_length + sizeof (".c"), 1);
1143 o_file = xcalloc (temp_filename_length + sizeof (".o"), 1);
1144 #ifdef COLLECT_EXPORT_LIST
1145 export_file = xmalloc (temp_filename_length + sizeof (".x"));
1146 import_file = xmalloc (temp_filename_length + sizeof (".p"));
1148 ldout = xmalloc (temp_filename_length + sizeof (".ld"));
1149 sprintf (ldout, "%s.ld", temp_filename);
1150 sprintf (c_file, "%s.c", temp_filename);
1151 sprintf (o_file, "%s.o", temp_filename);
1152 #ifdef COLLECT_EXPORT_LIST
1153 sprintf (export_file, "%s.x", temp_filename);
1154 sprintf (import_file, "%s.p", temp_filename);
1156 *c_ptr++ = c_file_name;
1161 #ifdef COLLECT_EXPORT_LIST
1162 /* Generate a list of directories from LIBPATH. */
1163 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1164 /* Add to this list also two standard directories where
1165 AIX loader always searches for libraries. */
1166 add_prefix (&libpath_lib_dirs, "/lib");
1167 add_prefix (&libpath_lib_dirs, "/usr/lib");
1170 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1172 AIX support needs to know if -shared has been specified before
1173 parsing commandline arguments. */
1175 p = getenv ("COLLECT_GCC_OPTIONS");
1178 char *q = extract_string (&p);
1179 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1180 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1181 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1184 obstack_free (&temporary_obstack, temporary_firstobj);
1185 *c_ptr++ = "-fno-exceptions";
1187 /* !!! When GCC calls collect2,
1188 it does not know whether it is calling collect2 or ld.
1189 So collect2 cannot meaningfully understand any options
1190 except those ld understands.
1191 If you propose to make GCC pass some other option,
1192 just imagine what will happen if ld is really ld!!! */
1194 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1195 /* After the first file, put in the c++ rt0. */
1198 while ((arg = *++argv) != (char *) 0)
1200 *ld1++ = *ld2++ = arg;
1206 #ifdef COLLECT_EXPORT_LIST
1207 /* We want to disable automatic exports on AIX when user
1208 explicitly puts an export list in command line */
1210 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1216 if (!strcmp (arg, "-debug"))
1218 /* Already parsed. */
1227 /* place o_file BEFORE this argument! */
1233 #ifdef COLLECT_EXPORT_LIST
1235 /* Resolving full library name. */
1236 char *s = resolve_lib_name (arg+2);
1238 /* If we will use an import list for this library,
1239 we should exclude it from ld args. */
1240 if (use_import_list (s))
1246 /* Saving a full library name. */
1247 add_to_list (&libs, s);
1252 #ifdef COLLECT_EXPORT_LIST
1253 /* Saving directories where to search for libraries. */
1255 add_prefix (&cmdline_lib_dirs, arg+2);
1261 output_file = *ld1++ = *ld2++ = *++argv;
1263 output_file = &arg[2];
1272 if (arg[2] == '\0' && do_collecting)
1274 /* We must strip after the nm run, otherwise C++ linking
1275 will not work. Thus we strip in the second ld run, or
1276 else with strip if there is no second ld run. */
1288 else if ((p = rindex (arg, '.')) != (char *) 0
1289 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1290 || strcmp (p, ".so") == 0))
1299 /* place o_file BEFORE this argument! */
1307 #ifdef COLLECT_EXPORT_LIST
1308 /* libraries can be specified directly, i.e. without -l flag. */
1311 /* If we will use an import list for this library,
1312 we should exclude it from ld args. */
1313 if (use_import_list (arg))
1319 /* Saving a full library name. */
1320 add_to_list (&libs, arg);
1326 #ifdef COLLECT_EXPORT_LIST
1327 /* This is added only for debugging purposes. */
1330 fprintf (stderr, "List of libraries:\n");
1331 dump_list (stderr, "\t", libs.first);
1334 /* The AIX linker will discard static constructors in object files if
1335 nothing else in the file is referenced, so look at them first. */
1337 char **export_object_lst = object_lst;
1338 while (export_object_lst < object)
1339 scan_prog_file (*export_object_lst++, PASS_OBJ);
1342 struct id *list = libs.first;
1343 for (; list; list = list->next)
1344 scan_prog_file (list->name, PASS_FIRST);
1347 char *buf1 = alloca (strlen (export_file) + 5);
1348 char *buf2 = alloca (strlen (import_file) + 5);
1349 sprintf (buf1, "-bE:%s", export_file);
1350 sprintf (buf2, "-bI:%s", import_file);
1355 exportf = fopen (export_file, "w");
1356 if (exportf == (FILE *) 0)
1357 fatal_perror ("%s", export_file);
1358 write_export_file (exportf);
1359 if (fclose (exportf))
1360 fatal_perror ("closing %s", export_file);
1361 importf = fopen (import_file, "w");
1362 if (importf == (FILE *) 0)
1363 fatal_perror ("%s", import_file);
1364 write_import_file (importf);
1365 if (fclose (importf))
1366 fatal_perror ("closing %s", import_file);
1371 *object = *c_ptr = *ld1 = (char *) 0;
1375 fprintf (stderr, "collect2 version %s", version_string);
1376 #ifdef TARGET_VERSION
1379 fprintf (stderr, "\n");
1385 fprintf (stderr, "ld_file_name = %s\n",
1386 (ld_file_name ? ld_file_name : "not found"));
1387 fprintf (stderr, "c_file_name = %s\n",
1388 (c_file_name ? c_file_name : "not found"));
1389 fprintf (stderr, "nm_file_name = %s\n",
1390 (nm_file_name ? nm_file_name : "not found"));
1392 fprintf (stderr, "ldd_file_name = %s\n",
1393 (ldd_file_name ? ldd_file_name : "not found"));
1395 fprintf (stderr, "strip_file_name = %s\n",
1396 (strip_file_name ? strip_file_name : "not found"));
1397 fprintf (stderr, "c_file = %s\n",
1398 (c_file ? c_file : "not found"));
1399 fprintf (stderr, "o_file = %s\n",
1400 (o_file ? o_file : "not found"));
1402 ptr = getenv ("COLLECT_GCC_OPTIONS");
1404 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1406 ptr = getenv ("COLLECT_GCC");
1408 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1410 ptr = getenv ("COMPILER_PATH");
1412 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1414 ptr = getenv ("LIBRARY_PATH");
1416 fprintf (stderr, "LIBRARY_PATH = %s\n", ptr);
1418 fprintf (stderr, "\n");
1421 /* Load the program, searching all libraries and attempting to provide
1422 undefined symbols from repository information. */
1424 /* On AIX we do this later. */
1425 #ifndef COLLECT_EXPORT_LIST
1426 do_tlink (ld1_argv, object_lst);
1429 /* If -r or they will be run via some other method, do not build the
1430 constructor or destructor list, just return now. */
1432 #ifndef COLLECT_EXPORT_LIST
1437 #ifdef COLLECT_EXPORT_LIST
1438 /* But make sure we delete the export file we may have created. */
1439 if (export_file != 0 && export_file[0])
1440 maybe_unlink (export_file);
1441 if (import_file != 0 && import_file[0])
1442 maybe_unlink (import_file);
1447 /* Examine the namelist with nm and search it for static constructors
1448 and destructors to call.
1449 Write the constructor and destructor tables to a .s file and reload. */
1451 /* On AIX we already done scanning for global constructors/destructors. */
1452 #ifndef COLLECT_EXPORT_LIST
1453 scan_prog_file (output_file, PASS_FIRST);
1456 #ifdef SCAN_LIBRARIES
1457 scan_libraries (output_file);
1462 fprintf (stderr, "%d constructor(s) found\n", constructors.number);
1463 fprintf (stderr, "%d destructor(s) found\n", destructors.number);
1466 if (constructors.number == 0 && destructors.number == 0
1467 && frame_tables.number == 0
1468 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1469 /* If we will be running these functions ourselves, we want to emit
1470 stubs into the shared library so that we do not have to relink
1471 dependent programs when we add static objects. */
1476 #ifdef COLLECT_EXPORT_LIST
1477 /* Doing tlink without additional code generation */
1478 do_tlink (ld1_argv, object_lst);
1480 /* Strip now if it was requested on the command line. */
1483 char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
1484 strip_argv[0] = strip_file_name;
1485 strip_argv[1] = output_file;
1486 strip_argv[2] = (char *) 0;
1487 fork_execute ("strip", strip_argv);
1490 #ifdef COLLECT_EXPORT_LIST
1491 maybe_unlink (export_file);
1492 maybe_unlink (import_file);
1497 maybe_unlink(output_file);
1498 outf = fopen (c_file, "w");
1499 if (outf == (FILE *) 0)
1500 fatal_perror ("%s", c_file);
1502 write_c_file (outf, c_file);
1505 fatal_perror ("closing %s", c_file);
1507 /* Tell the linker that we have initializer and finalizer functions. */
1508 #ifdef LD_INIT_SWITCH
1509 *ld2++ = LD_INIT_SWITCH;
1511 *ld2++ = LD_FINI_SWITCH;
1516 #ifdef COLLECT_EXPORT_LIST
1519 add_to_list (&exports, initname);
1520 add_to_list (&exports, fininame);
1521 add_to_list (&exports, "_GLOBAL__DI");
1522 add_to_list (&exports, "_GLOBAL__DD");
1523 exportf = fopen (export_file, "w");
1524 if (exportf == (FILE *) 0)
1525 fatal_perror ("%s", export_file);
1526 write_export_file (exportf);
1527 if (fclose (exportf))
1528 fatal_perror ("closing %s", export_file);
1534 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1535 output_file, c_file);
1536 write_c_file (stderr, "stderr");
1537 fprintf (stderr, "========== end of c_file\n\n");
1538 #ifdef COLLECT_EXPORT_LIST
1539 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1540 write_export_file (stderr);
1541 fprintf (stderr, "========== end of export_file\n\n");
1545 /* Assemble the constructor and destructor tables.
1546 Link the tables in with the rest of the program. */
1548 fork_execute ("gcc", c_argv);
1549 #ifdef COLLECT_EXPORT_LIST
1550 /* On AIX we must call tlink because of possible templates resolution */
1551 do_tlink (ld2_argv, object_lst);
1553 /* Otherwise, simply call ld because tlink is already done */
1554 fork_execute ("ld", ld2_argv);
1556 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1557 constructors/destructors in shared libraries. */
1558 scan_prog_file (output_file, PASS_SECOND);
1561 maybe_unlink (c_file);
1562 maybe_unlink (o_file);
1564 #ifdef COLLECT_EXPORT_LIST
1565 maybe_unlink (export_file);
1566 maybe_unlink (import_file);
1573 /* Wait for a process to finish, and exit if a non-zero status is found. */
1584 if (WIFSIGNALED (status))
1586 int sig = WTERMSIG (status);
1587 #ifdef NO_SYS_SIGLIST
1588 error ("%s terminated with signal %d %s",
1591 (status & 0200) ? ", core dumped" : "");
1593 error ("%s terminated with signal %d [%s]%s",
1597 (status & 0200) ? ", core dumped" : "");
1600 collect_exit (FATAL_EXIT_CODE);
1603 if (WIFEXITED (status))
1604 return WEXITSTATUS (status);
1613 int ret = collect_wait (prog);
1616 error ("%s returned %d exit status", prog, ret);
1622 /* Fork and execute a program, and wait for the reply. */
1625 collect_execute (prog, argv, redir)
1638 fprintf (stderr, "%s", argv[0]);
1640 fprintf (stderr, "[cannot find %s]", prog);
1642 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1643 fprintf (stderr, " %s", str);
1645 fprintf (stderr, "\n");
1651 /* If we cannot find a program we need, complain error. Do this here
1652 since we might not end up needing something that we could not find. */
1655 fatal ("cannot find `%s'", prog);
1657 #ifndef __CYGWIN32__
1662 fatal_perror ("fork");
1664 fatal_perror ("vfork");
1668 if (pid == 0) /* child context */
1673 if (freopen (redir, "a", stdout) == NULL)
1674 fatal_perror ("redirecting stdout: %s", redir);
1675 if (freopen (redir, "a", stderr) == NULL)
1676 fatal_perror ("redirecting stderr: %s", redir);
1679 execvp (argv[0], argv);
1680 fatal_perror ("executing %s", prog);
1683 pid = _spawnvp (_P_NOWAIT, argv[0], argv);
1685 fatal ("spawnvp failed");
1690 fork_execute (prog, argv)
1694 collect_execute (prog, argv, NULL);
1698 /* Unlink a file unless we are debugging. */
1707 fprintf (stderr, "[Leaving %s]\n", file);
1711 /* Add a name to a linked list. */
1714 add_to_list (head_ptr, name)
1715 struct head *head_ptr;
1719 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1721 static long sequence_number = 0;
1722 strcpy (newid->name, name);
1724 if (head_ptr->first)
1725 head_ptr->last->next = newid;
1727 head_ptr->first = newid;
1729 /* Check for duplicate symbols. */
1730 for (p = head_ptr->first;
1731 strcmp (name, p->name) != 0;
1736 head_ptr->last->next = 0;
1741 newid->sequence = ++sequence_number;
1742 head_ptr->last = newid;
1746 /* Write: `prefix', the names on list LIST, `suffix'. */
1749 write_list (stream, prefix, list)
1756 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1761 #ifdef COLLECT_EXPORT_LIST
1762 /* This function is really used only on AIX, but may be useful. */
1764 is_in_list (prefix, list)
1770 if (!strcmp (prefix, list->name)) return 1;
1777 /* Added for debugging purpose. */
1779 dump_list (stream, prefix, list)
1786 fprintf (stream, "%s%s,\n", prefix, list->name);
1792 dump_prefix_list (stream, prefix, list)
1795 struct prefix_list *list;
1799 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1805 write_list_with_asm (stream, prefix, list)
1812 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1813 prefix, list->sequence, list->name);
1818 /* Write out the constructor and destructor tables statically (for a shared
1819 object), along with the functions to execute them. */
1822 write_c_file_stat (stream, name)
1826 char *prefix, *p, *q;
1827 int frames = (frame_tables.number > 0);
1829 /* Figure out name of output_file, stripping off .so version. */
1830 p = rindex (output_file, '/');
1832 p = (char *) output_file;
1846 if (strncmp (q, ".so", 3) == 0)
1855 /* q points to null at end of the string (or . of the .so version) */
1856 prefix = xmalloc (q - p + 1);
1857 strncpy (prefix, p, q - p);
1859 for (q = prefix; *q; q++)
1863 fprintf (stderr, "\nwrite_c_file - output name is %s, prefix is %s\n",
1864 output_file, prefix);
1866 #define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
1867 initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
1868 sprintf (initname, INIT_NAME_FORMAT, prefix);
1870 #define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
1871 fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
1872 sprintf (fininame, FINI_NAME_FORMAT, prefix);
1876 /* Write the tables as C code */
1878 fprintf (stream, "static int count;\n");
1879 fprintf (stream, "typedef void entry_pt();\n");
1880 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1884 write_list_with_asm (stream, "extern void *", frame_tables.first);
1886 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1887 write_list (stream, "\t\t&", frame_tables.first);
1888 fprintf (stream, "\t0\n};\n");
1890 /* This must match what's in frame.h. */
1891 fprintf (stream, "struct object {\n");
1892 fprintf (stream, " void *pc_begin;\n");
1893 fprintf (stream, " void *pc_end;\n");
1894 fprintf (stream, " void *fde_begin;\n");
1895 fprintf (stream, " void *fde_array;\n");
1896 fprintf (stream, " __SIZE_TYPE__ count;\n");
1897 fprintf (stream, " struct object *next;\n");
1898 fprintf (stream, "};\n");
1900 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1901 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1903 fprintf (stream, "static void reg_frame () {\n");
1904 fprintf (stream, "\tstatic struct object ob;\n");
1905 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1906 fprintf (stream, "\t}\n");
1908 fprintf (stream, "static void dereg_frame () {\n");
1909 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1910 fprintf (stream, "\t}\n");
1913 fprintf (stream, "void %s() {\n", initname);
1914 if (constructors.number > 0 || frames)
1916 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1917 write_list (stream, "\t\t", constructors.first);
1919 fprintf (stream, "\treg_frame,\n");
1920 fprintf (stream, "\t};\n");
1921 fprintf (stream, "\tentry_pt **p;\n");
1922 fprintf (stream, "\tif (count++ != 0) return;\n");
1923 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
1924 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1927 fprintf (stream, "\t++count;\n");
1928 fprintf (stream, "}\n");
1929 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1930 fprintf (stream, "void %s() {\n", fininame);
1931 if (destructors.number > 0 || frames)
1933 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1934 write_list (stream, "\t\t", destructors.first);
1936 fprintf (stream, "\tdereg_frame,\n");
1937 fprintf (stream, "\t};\n");
1938 fprintf (stream, "\tentry_pt **p;\n");
1939 fprintf (stream, "\tif (--count != 0) return;\n");
1940 fprintf (stream, "\tp = dtors;\n");
1941 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
1942 destructors.number + frames);
1944 fprintf (stream, "}\n");
1948 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
1949 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
1953 /* Write the constructor/destructor tables. */
1955 #ifndef LD_INIT_SWITCH
1957 write_c_file_glob (stream, name)
1961 /* Write the tables as C code */
1963 int frames = (frame_tables.number > 0);
1965 fprintf (stream, "typedef void entry_pt();\n\n");
1967 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1971 write_list_with_asm (stream, "extern void *", frame_tables.first);
1973 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1974 write_list (stream, "\t\t&", frame_tables.first);
1975 fprintf (stream, "\t0\n};\n");
1977 /* This must match what's in frame.h. */
1978 fprintf (stream, "struct object {\n");
1979 fprintf (stream, " void *pc_begin;\n");
1980 fprintf (stream, " void *pc_end;\n");
1981 fprintf (stream, " void *fde_begin;\n");
1982 fprintf (stream, " void *fde_array;\n");
1983 fprintf (stream, " __SIZE_TYPE__ count;\n");
1984 fprintf (stream, " struct object *next;\n");
1985 fprintf (stream, "};\n");
1987 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1988 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1990 fprintf (stream, "static void reg_frame () {\n");
1991 fprintf (stream, "\tstatic struct object ob;\n");
1992 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1993 fprintf (stream, "\t}\n");
1995 fprintf (stream, "static void dereg_frame () {\n");
1996 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1997 fprintf (stream, "\t}\n");
2000 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
2001 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
2002 write_list (stream, "\t", constructors.first);
2004 fprintf (stream, "\treg_frame,\n");
2005 fprintf (stream, "\t0\n};\n\n");
2007 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2009 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2010 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2011 write_list (stream, "\t", destructors.first);
2013 fprintf (stream, "\tdereg_frame,\n");
2014 fprintf (stream, "\t0\n};\n\n");
2016 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2017 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2019 #endif /* ! LD_INIT_SWITCH */
2022 write_c_file (stream, name)
2026 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2027 #ifndef LD_INIT_SWITCH
2029 write_c_file_glob (stream, name);
2032 write_c_file_stat (stream, name);
2033 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2036 #ifdef COLLECT_EXPORT_LIST
2038 write_export_file (stream)
2041 struct id *list = exports.first;
2042 for (; list; list = list->next)
2043 fprintf (stream, "%s\n", list->name);
2047 write_import_file (stream)
2050 struct id *list = imports.first;
2051 fprintf (stream, "%s\n", "#! .");
2052 for (; list; list = list->next)
2053 fprintf (stream, "%s\n", list->name);
2057 #ifdef OBJECT_FORMAT_NONE
2059 /* Generic version to scan the name list of the loaded program for
2060 the symbols g++ uses for static constructors and destructors.
2062 The constructor table begins at __CTOR_LIST__ and contains a count
2063 of the number of pointers (or -1 if the constructors are built in a
2064 separate section by the linker), followed by the pointers to the
2065 constructor functions, terminated with a null pointer. The
2066 destructor table has the same format, and begins at __DTOR_LIST__. */
2069 scan_prog_file (prog_name, which_pass)
2071 enum pass which_pass;
2073 void (*int_handler) ();
2074 void (*quit_handler) ();
2082 if (which_pass == PASS_SECOND)
2085 /* If we do not have an `nm', complain. */
2086 if (nm_file_name == 0)
2087 fatal ("cannot find `nm'");
2089 nm_argv[argc++] = nm_file_name;
2090 if (NM_FLAGS[0] != '\0')
2091 nm_argv[argc++] = NM_FLAGS;
2093 nm_argv[argc++] = prog_name;
2094 nm_argv[argc++] = (char *) 0;
2096 if (pipe (pipe_fd) < 0)
2097 fatal_perror ("pipe");
2099 inf = fdopen (pipe_fd[0], "r");
2100 if (inf == (FILE *) 0)
2101 fatal_perror ("fdopen");
2103 /* Trace if needed. */
2109 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2110 fprintf (stderr, " %s", str);
2112 fprintf (stderr, "\n");
2118 /* Spawn child nm on pipe */
2123 fatal_perror ("fork");
2125 fatal_perror ("vfork");
2129 if (pid == 0) /* child context */
2132 if (dup2 (pipe_fd[1], 1) < 0)
2133 fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
2135 if (close (pipe_fd[0]) < 0)
2136 fatal_perror ("close (%d)", pipe_fd[0]);
2138 if (close (pipe_fd[1]) < 0)
2139 fatal_perror ("close (%d)", pipe_fd[1]);
2141 execv (nm_file_name, nm_argv);
2142 fatal_perror ("executing %s", nm_file_name);
2145 /* Parent context from here on. */
2146 int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
2148 quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
2151 if (close (pipe_fd[1]) < 0)
2152 fatal_perror ("close (%d)", pipe_fd[1]);
2155 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2157 /* Read each line of nm output. */
2158 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2163 /* If it contains a constructor or destructor name, add the name
2164 to the appropriate list. */
2166 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2167 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2174 /* Find the end of the symbol name.
2175 Do not include `|', because Encore nm can tack that on the end. */
2176 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2182 switch (is_ctor_dtor (name))
2185 if (which_pass != PASS_LIB)
2186 add_to_list (&constructors, name);
2190 if (which_pass != PASS_LIB)
2191 add_to_list (&destructors, name);
2195 if (which_pass != PASS_LIB)
2196 fatal ("init function found in object %s", prog_name);
2197 #ifndef LD_INIT_SWITCH
2198 add_to_list (&constructors, name);
2203 if (which_pass != PASS_LIB)
2204 fatal ("fini function found in object %s", prog_name);
2205 #ifndef LD_FINI_SWITCH
2206 add_to_list (&destructors, name);
2211 if (which_pass != PASS_LIB)
2212 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 of pipe");
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. */
2268 if ((fp = open (name, O_RDONLY)) == -1)
2269 fatal ("unable to open file '%s'", name);
2270 if (fstat (fp, &s) == -1)
2271 fatal ("unable to stat file '%s'", name);
2273 objsize = s.st_size;
2274 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2277 fatal ("unable to mmap file '%s'", name);
2282 /* Helpers for locatelib. */
2284 static char *libname;
2290 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2293 /* If one file has an additional numeric extension past LIBNAME, then put
2294 that one first in the sort. If both files have additional numeric
2295 extensions, then put the one with the higher number first in the sort.
2297 We must verify that the extension is numeric, because Sun saves the
2298 original versions of patched libraries with a .FCS extension. Files with
2299 invalid extensions must go last in the sort, so that they will not be used. */
2303 struct direct **d1, **d2;
2305 int i1, i2 = strlen (libname);
2306 char *e1 = (*d1)->d_name + i2;
2307 char *e2 = (*d2)->d_name + i2;
2309 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2310 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2314 i1 = strtol (e1, &e1, 10);
2315 i2 = strtol (e2, &e2, 10);
2322 /* It has a valid numeric extension, prefer this one. */
2323 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2325 /* It has a invalid numeric extension, must prefer the other one. */
2331 /* It has a valid numeric extension, prefer this one. */
2332 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2334 /* It has a invalid numeric extension, must prefer the other one. */
2342 /* Given the name NAME of a dynamic dependency, find its pathname and add
2343 it to the list of libraries. */
2351 char buf[MAXPATHLEN];
2359 /* counting elements in array, need 1 extra for null */
2361 ld_rules = (char *) (ld_2->ld_rules + code);
2365 for (; *ld_rules != 0; ld_rules++)
2366 if (*ld_rules == ':')
2368 ld_rules = (char *) (ld_2->ld_rules + code);
2369 ldr = (char *) malloc (strlen (ld_rules) + 1);
2370 strcpy (ldr, ld_rules);
2372 p = getenv ("LD_LIBRARY_PATH");
2377 for (q = p ; *q != 0; q++)
2380 q = (char *) malloc (strlen (p) + 1);
2383 l = (char **) malloc ((cnt + 3) * sizeof (char *));
2388 for (; *ldr != 0; ldr++)
2398 for (; *q != 0; q++)
2405 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2408 *pp++ = "/usr/local/lib";
2412 for (pp = l; *pp != 0 ; pp++)
2414 struct direct **namelist;
2416 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2418 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2419 add_to_list (&libraries, buf);
2421 fprintf (stderr, "%s\n", buf);
2428 fprintf (stderr, "not found\n");
2430 fatal ("dynamic dependency %s not found", name);
2434 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2435 that it depends upon and any constructors or destructors they contain. */
2438 scan_libraries (prog_name)
2441 struct exec *header;
2443 struct link_object *lo;
2444 char buff[MAXPATHLEN];
2447 mapfile (prog_name);
2448 header = (struct exec *)object;
2449 if (N_BADMAG (*header))
2450 fatal ("bad magic number in file '%s'", prog_name);
2451 if (header->a_dynamic == 0)
2454 code = (char *) (N_TXTOFF (*header) + (long) header);
2455 data = (char *) (N_DATOFF (*header) + (long) header);
2456 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2458 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2461 ld = (struct link_dynamic *) (symtab->n_value + code);
2467 ld = (struct link_dynamic *) data;
2472 fprintf (stderr, "dynamic dependencies.\n");
2474 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2475 for (lo = (struct link_object *) ld_2->ld_need; lo;
2476 lo = (struct link_object *) lo->lo_next)
2479 lo = (struct link_object *) ((long) lo + code);
2480 name = (char *) (code + lo->lo_name);
2484 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2485 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2491 fprintf (stderr, "\t%s\n", name);
2492 add_to_list (&libraries, name);
2497 fprintf (stderr, "\n");
2499 /* now iterate through the library list adding their symbols to
2501 for (list = libraries.first; list; list = list->next)
2502 scan_prog_file (list->name, PASS_LIB);
2505 #else /* SUNOS4_SHARED_LIBRARIES */
2508 /* Use the List Dynamic Dependencies program to find shared libraries that
2509 the output file depends upon and their initialization/finalization
2510 routines, if any. */
2513 scan_libraries (prog_name)
2516 static struct head libraries; /* list of shared libraries found */
2518 void (*int_handler) ();
2519 void (*quit_handler) ();
2527 /* If we do not have an `ldd', complain. */
2528 if (ldd_file_name == 0)
2530 error ("cannot find `ldd'");
2534 ldd_argv[argc++] = ldd_file_name;
2535 ldd_argv[argc++] = prog_name;
2536 ldd_argv[argc++] = (char *) 0;
2538 if (pipe (pipe_fd) < 0)
2539 fatal_perror ("pipe");
2541 inf = fdopen (pipe_fd[0], "r");
2542 if (inf == (FILE *) 0)
2543 fatal_perror ("fdopen");
2545 /* Trace if needed. */
2551 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2552 fprintf (stderr, " %s", str);
2554 fprintf (stderr, "\n");
2560 /* Spawn child ldd on pipe */
2565 fatal_perror ("fork");
2567 fatal_perror ("vfork");
2571 if (pid == 0) /* child context */
2574 if (dup2 (pipe_fd[1], 1) < 0)
2575 fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
2577 if (close (pipe_fd[0]) < 0)
2578 fatal_perror ("close (%d)", pipe_fd[0]);
2580 if (close (pipe_fd[1]) < 0)
2581 fatal_perror ("close (%d)", pipe_fd[1]);
2583 execv (ldd_file_name, ldd_argv);
2584 fatal_perror ("executing %s", ldd_file_name);
2587 /* Parent context from here on. */
2588 int_handler = (void (*) ()) signal (SIGINT, SIG_IGN);
2590 quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN);
2593 if (close (pipe_fd[1]) < 0)
2594 fatal_perror ("close (%d)", pipe_fd[1]);
2597 fprintf (stderr, "\nldd output with constructors/destructors.\n");
2599 /* Read each line of ldd output. */
2600 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2603 char *name, *end, *p = buf;
2605 /* Extract names of libraries and add to list. */
2606 PARSE_LDD_OUTPUT (p);
2611 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2612 fatal ("dynamic dependency %s not found", buf);
2614 /* Find the end of the symbol name. */
2616 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2621 if (access (name, R_OK) == 0)
2622 add_to_list (&libraries, name);
2624 fatal ("unable to open dynamic dependency '%s'", buf);
2627 fprintf (stderr, "\t%s\n", buf);
2630 fprintf (stderr, "\n");
2632 if (fclose (inf) != 0)
2633 fatal_perror ("fclose of pipe");
2635 do_wait (ldd_file_name);
2637 signal (SIGINT, int_handler);
2639 signal (SIGQUIT, quit_handler);
2642 /* now iterate through the library list adding their symbols to
2644 for (list = libraries.first; list; list = list->next)
2645 scan_prog_file (list->name, PASS_LIB);
2648 #endif /* LDD_SUFFIX */
2649 #endif /* SUNOS4_SHARED_LIBRARIES */
2651 #endif /* OBJECT_FORMAT_NONE */
2655 * COFF specific stuff.
2658 #ifdef OBJECT_FORMAT_COFF
2660 #if defined(EXTENDED_COFF)
2661 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2662 # define GCC_SYMENT SYMR
2663 # define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText)
2664 # define GCC_SYMINC(X) (1)
2665 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2666 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2668 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2669 # define GCC_SYMENT SYMENT
2670 # define GCC_OK_SYMBOL(X) \
2671 (((X).n_sclass == C_EXT) && \
2672 ((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) (1)
2682 extern char *ldgetname ();
2684 /* COFF version to scan the name list of the loaded program for
2685 the symbols g++ uses for static constructors and destructors.
2687 The constructor table begins at __CTOR_LIST__ and contains a count
2688 of the number of pointers (or -1 if the constructors are built in a
2689 separate section by the linker), followed by the pointers to the
2690 constructor functions, terminated with a null pointer. The
2691 destructor table has the same format, and begins at __DTOR_LIST__. */
2694 scan_prog_file (prog_name, which_pass)
2696 enum pass which_pass;
2698 LDFILE *ldptr = NULL;
2699 int sym_index, sym_count;
2701 #ifdef COLLECT_EXPORT_LIST
2702 /* Should we generate an import list for given prog_name? */
2703 int import_flag = (which_pass == PASS_OBJ ? 0 : use_import_list (prog_name));
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 if ((ldptr = ldopen (prog_name, ldptr)) != NULL)
2723 if (!MY_ISCOFF (HEADER (ldptr).f_magic))
2724 fatal ("%s: not a COFF file", prog_name);
2726 #ifdef COLLECT_EXPORT_LIST
2727 /* Is current archive member a shared object? */
2728 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2730 if (GCC_CHECK_HDR (ldptr))
2732 sym_count = GCC_SYMBOLS (ldptr);
2733 sym_index = GCC_SYMZERO (ldptr);
2734 while (sym_index < sym_count)
2738 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2740 sym_index += GCC_SYMINC (symbol);
2742 if (GCC_OK_SYMBOL (symbol))
2746 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2747 continue; /* should never happen */
2749 #ifdef XCOFF_DEBUGGING_INFO
2750 /* All AIX function names have a duplicate entry
2751 beginning with a dot. */
2756 switch (is_ctor_dtor (name))
2759 if (! is_shared) add_to_list (&constructors, name);
2760 #ifdef COLLECT_EXPORT_LIST
2761 if (which_pass == PASS_OBJ)
2762 add_to_list (&exports, name);
2763 /* If this symbol was undefined and we are building
2764 an import list, we should add a symbol to this
2768 && is_in_list (name, undefined.first))
2769 add_to_list (&imports, name);
2774 if (! is_shared) add_to_list (&destructors, name);
2775 #ifdef COLLECT_EXPORT_LIST
2776 if (which_pass == PASS_OBJ)
2777 add_to_list (&exports, name);
2778 /* If this symbol was undefined and we are building
2779 an import list, we should add a symbol to this
2783 && is_in_list (name, undefined.first))
2784 add_to_list (&imports, name);
2788 #ifdef COLLECT_EXPORT_LIST
2791 add_to_list (&constructors, name);
2796 add_to_list (&destructors, name);
2800 default: /* not a constructor or destructor */
2801 #ifdef COLLECT_EXPORT_LIST
2802 /* If we are building a shared object on AIX we need
2803 to explicitly export all global symbols or add
2804 them to import list. */
2807 if (which_pass == PASS_OBJ && (! export_flag))
2808 add_to_list (&exports, name);
2809 else if (! is_shared && which_pass == PASS_FIRST
2811 && is_in_list(name, undefined.first))
2812 add_to_list (&imports, name);
2818 #if !defined(EXTENDED_COFF)
2820 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2821 symbol.n_scnum, symbol.n_sclass,
2822 (symbol.n_type ? "0" : ""), symbol.n_type,
2827 "\tiss = %5d, value = %5d, index = %5d, name = %s\n",
2828 symbol.iss, symbol.value, symbol.index, name);
2831 #ifdef COLLECT_EXPORT_LIST
2832 /* If we are building a shared object we should collect
2833 information about undefined symbols for later
2834 import list generation. */
2835 else if (shared_obj && GCC_UNDEF_SYMBOL (symbol))
2839 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2840 continue; /* should never happen */
2842 /* All AIX function names have a duplicate entry
2843 beginning with a dot. */
2846 add_to_list (&undefined, name);
2854 fatal ("%s: cannot open as COFF file", prog_name);
2856 #ifdef COLLECT_EXPORT_LIST
2857 /* On AIX loop continues while there are more members in archive. */
2859 while (ldclose (ldptr) == FAILURE);
2861 /* Otherwise we simply close ldptr. */
2862 (void) ldclose(ldptr);
2867 #ifdef COLLECT_EXPORT_LIST
2869 /* This new function is used to decide whether we should
2870 generate import list for an object or to use it directly. */
2872 use_import_list (prog_name)
2877 /* If we do not build a shared object then import list should not be used. */
2878 if (! shared_obj) return 0;
2880 /* Currently we check only for libgcc, but this can be changed in future. */
2881 p = strstr (prog_name, "libgcc.a");
2882 if (p != 0 && (strlen (p) == sizeof ("libgcc.a") - 1))
2887 /* Given a library name without "lib" prefix, this function
2888 returns a full library name including a path. */
2890 resolve_lib_name (name)
2896 for (i = 0; libpaths[i]; i++)
2897 if (libpaths[i]->max_len > l)
2898 l = libpaths[i]->max_len;
2900 lib_buf = xmalloc (l + strlen(name) + 10);
2902 for (i = 0; libpaths[i]; i++)
2904 struct prefix_list *list = libpaths[i]->plist;
2905 for (; list; list = list->next)
2907 for (j = 0; libexts[j]; j++)
2909 /* The following lines are needed because path_prefix list
2910 may contain directories both with trailing '/' and
2913 if (list->prefix[strlen(list->prefix)-1] != '/')
2915 sprintf (lib_buf, "%s%slib%s.%s",
2916 list->prefix, p, name, libexts[j]);
2917 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
2918 if (file_exists (lib_buf))
2920 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
2927 fprintf (stderr, "not found\n");
2929 fatal ("Library lib%s not found", name);
2933 /* Array of standard AIX libraries which should not
2934 be scanned for ctors/dtors. */
2935 static char* aix_std_libs[] = {
2940 "/usr/lib/libc_r.a",
2941 "/usr/lib/threads/libc.a",
2942 "/usr/ccs/lib/libc.a",
2943 "/usr/ccs/lib/libc_r.a",
2947 /* This function checks the filename and returns 1
2948 if this name matches the location of a standard AIX library. */
2950 ignore_library (name)
2953 char **p = &aix_std_libs[0];
2954 while (*p++ != NULL)
2955 if (! strcmp (name, *p)) return 1;
2961 #endif /* OBJECT_FORMAT_COFF */
2965 * OSF/rose specific stuff.
2968 #ifdef OBJECT_FORMAT_ROSE
2970 /* Union of the various load commands */
2972 typedef union load_union
2974 ldc_header_t hdr; /* common header */
2975 load_cmd_map_command_t map; /* map indexing other load cmds */
2976 interpreter_command_t iprtr; /* interpreter pathname */
2977 strings_command_t str; /* load commands strings section */
2978 region_command_t region; /* region load command */
2979 reloc_command_t reloc; /* relocation section */
2980 package_command_t pkg; /* package load command */
2981 symbols_command_t sym; /* symbol sections */
2982 entry_command_t ent; /* program start section */
2983 gen_info_command_t info; /* object information */
2984 func_table_command_t func; /* function constructors/destructors */
2987 /* Structure to point to load command and data section in memory. */
2989 typedef struct load_all
2991 load_union_t *load; /* load command */
2992 char *section; /* pointer to section */
2995 /* Structure to contain information about a file mapped into memory. */
2999 char *start; /* start of map */
3000 char *name; /* filename */
3001 long size; /* size of the file */
3002 long rounded_size; /* size rounded to page boundary */
3003 int fd; /* file descriptor */
3004 int rw; /* != 0 if opened read/write */
3005 int use_mmap; /* != 0 if mmap'ed */
3008 extern int decode_mach_o_hdr ();
3009 extern int encode_mach_o_hdr ();
3011 static void add_func_table PROTO((mo_header_t *, load_all_t *,
3012 symbol_info_t *, int));
3013 static void print_header PROTO((mo_header_t *));
3014 static void print_load_command PROTO((load_union_t *, size_t, int));
3015 static void bad_header PROTO((int));
3016 static struct file_info *read_file PROTO((char *, int, int));
3017 static void end_file PROTO((struct file_info *));
3019 /* OSF/rose specific version to scan the name list of the loaded
3020 program for the symbols g++ uses for static constructors and
3023 The constructor table begins at __CTOR_LIST__ and contains a count
3024 of the number of pointers (or -1 if the constructors are built in a
3025 separate section by the linker), followed by the pointers to the
3026 constructor functions, terminated with a null pointer. The
3027 destructor table has the same format, and begins at __DTOR_LIST__. */
3030 scan_prog_file (prog_name, which_pass)
3032 enum pass which_pass;
3036 load_all_t *load_array;
3037 load_all_t *load_end;
3038 load_all_t *load_cmd;
3039 int symbol_load_cmds;
3045 struct file_info *obj_file;
3047 mo_lcid_t cmd_strings = -1;
3048 symbol_info_t *main_sym = 0;
3049 int rw = (which_pass != PASS_FIRST);
3051 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3053 fatal_perror ("cannot read %s", prog_name);
3055 obj_file = read_file (prog_name, prog_fd, rw);
3056 obj = obj_file->start;
3058 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3059 if (status != MO_HDR_CONV_SUCCESS)
3060 bad_header (status);
3063 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3064 since the hardware will automatically swap bytes for us on loading little endian
3067 #ifndef CROSS_COMPILE
3068 if (hdr.moh_magic != MOH_MAGIC_MSB
3069 || hdr.moh_header_version != MOH_HEADER_VERSION
3070 || hdr.moh_byte_order != OUR_BYTE_ORDER
3071 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3072 || hdr.moh_cpu_type != OUR_CPU_TYPE
3073 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3074 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3076 fatal ("incompatibilities between object file & expected values");
3081 print_header (&hdr);
3083 offset = hdr.moh_first_cmd_off;
3084 load_end = load_array
3085 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3087 /* Build array of load commands, calculating the offsets */
3088 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3090 load_union_t *load_hdr; /* load command header */
3092 load_cmd = load_end++;
3093 load_hdr = (load_union_t *) (obj + offset);
3095 /* If modifying the program file, copy the header. */
3098 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3099 bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
3102 /* null out old command map, because we will rewrite at the end. */
3103 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3105 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3106 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3110 load_cmd->load = load_hdr;
3111 if (load_hdr->hdr.ldci_section_off > 0)
3112 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3115 print_load_command (load_hdr, offset, i);
3117 offset += load_hdr->hdr.ldci_cmd_size;
3120 /* If the last command is the load command map and is not undefined,
3121 decrement the count of load commands. */
3122 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3125 hdr.moh_n_load_cmds--;
3128 /* Go through and process each symbol table section. */
3129 symbol_load_cmds = 0;
3130 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3132 load_union_t *load_hdr = load_cmd->load;
3134 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3140 char *kind = "unknown";
3142 switch (load_hdr->sym.symc_kind)
3144 case SYMC_IMPORTS: kind = "imports"; break;
3145 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3146 case SYMC_STABS: kind = "stabs"; break;
3149 fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3150 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3153 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3156 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3157 if (str_sect == (char *) 0)
3158 fatal ("string section missing");
3160 if (load_cmd->section == (char *) 0)
3161 fatal ("section pointer missing");
3163 num_syms = load_hdr->sym.symc_nentries;
3164 for (i = 0; i < num_syms; i++)
3166 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3167 char *name = sym->si_name.symbol_name + str_sect;
3174 char *n = name + strlen (name) - strlen (NAME__MAIN);
3176 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3186 switch (is_ctor_dtor (name))
3189 add_to_list (&constructors, name);
3193 add_to_list (&destructors, name);
3196 default: /* not a constructor or destructor */
3202 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3203 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3208 if (symbol_load_cmds == 0)
3209 fatal ("no symbol table found");
3211 /* Update the program file now, rewrite header and load commands. At present,
3212 we assume that there is enough space after the last load command to insert
3213 one more. Since the first section written out is page aligned, and the
3214 number of load commands is small, this is ok for the present. */
3218 load_union_t *load_map;
3221 if (cmd_strings == -1)
3222 fatal ("no cmd_strings found");
3224 /* Add __main to initializer list.
3225 If we are building a program instead of a shared library, do not
3226 do anything, since in the current version, you cannot do mallocs
3227 and such in the constructors. */
3229 if (main_sym != (symbol_info_t *) 0
3230 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3231 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3234 fprintf (stderr, "\nUpdating header and load commands.\n\n");
3236 hdr.moh_n_load_cmds++;
3237 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3239 /* Create new load command map. */
3241 fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
3242 (int)hdr.moh_n_load_cmds, (long)size);
3244 load_map = (load_union_t *) xcalloc (1, size);
3245 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3246 load_map->map.ldc_header.ldci_cmd_size = size;
3247 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3248 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3249 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3251 offset = hdr.moh_first_cmd_off;
3252 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3254 load_map->map.lcm_map[i] = offset;
3255 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3256 hdr.moh_load_map_cmd_off = offset;
3258 offset += load_array[i].load->hdr.ldci_cmd_size;
3261 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3264 print_header (&hdr);
3267 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3268 if (status != MO_HDR_CONV_SUCCESS)
3269 bad_header (status);
3272 fprintf (stderr, "writing load commands.\n\n");
3274 /* Write load commands */
3275 offset = hdr.moh_first_cmd_off;
3276 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3278 load_union_t *load_hdr = load_array[i].load;
3279 size_t size = load_hdr->hdr.ldci_cmd_size;
3282 print_load_command (load_hdr, offset, i);
3284 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3289 end_file (obj_file);
3291 if (close (prog_fd))
3292 fatal_perror ("closing %s", prog_name);
3295 fprintf (stderr, "\n");
3299 /* Add a function table to the load commands to call a function
3300 on initiation or termination of the process. */
3303 add_func_table (hdr_p, load_array, sym, type)
3304 mo_header_t *hdr_p; /* pointer to global header */
3305 load_all_t *load_array; /* array of ptrs to load cmds */
3306 symbol_info_t *sym; /* pointer to symbol entry */
3307 int type; /* fntc_type value */
3309 /* Add a new load command. */
3310 int num_cmds = ++hdr_p->moh_n_load_cmds;
3311 int load_index = num_cmds - 1;
3312 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3313 load_union_t *ptr = xcalloc (1, size);
3314 load_all_t *load_cmd;
3317 /* Set the unresolved address bit in the header to force the loader to be
3318 used, since kernel exec does not call the initialization functions. */
3319 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3321 load_cmd = &load_array[load_index];
3322 load_cmd->load = ptr;
3323 load_cmd->section = (char *) 0;
3325 /* Fill in func table load command. */
3326 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3327 ptr->func.ldc_header.ldci_cmd_size = size;
3328 ptr->func.ldc_header.ldci_section_off = 0;
3329 ptr->func.ldc_header.ldci_section_len = 0;
3330 ptr->func.fntc_type = type;
3331 ptr->func.fntc_nentries = 1;
3333 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3334 /* Is the symbol already expressed as (region, offset)? */
3335 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3337 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3338 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3341 /* If not, figure out which region it's in. */
3344 mo_vm_addr_t addr = sym->si_value.abs_val;
3347 for (i = 0; i < load_index; i++)
3349 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3351 region_command_t *region_ptr = &load_array[i].load->region;
3353 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3354 && addr >= region_ptr->regc_addr.vm_addr
3355 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3357 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3358 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3366 fatal ("could not convert 0x%l.8x into a region", addr);
3371 "%s function, region %d, offset = %ld (0x%.8lx)\n",
3372 (type == FNTC_INITIALIZATION) ? "init" : "term",
3373 (int)ptr->func.fntc_entry_loc[i].adr_lcid,
3374 (long)ptr->func.fntc_entry_loc[i].adr_sctoff,
3375 (long)ptr->func.fntc_entry_loc[i].adr_sctoff);
3380 /* Print the global header for an OSF/rose object. */
3383 print_header (hdr_ptr)
3384 mo_header_t *hdr_ptr;
3386 fprintf (stderr, "\nglobal header:\n");
3387 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3388 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3389 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3390 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3391 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3392 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3393 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3394 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3395 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3396 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3397 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3398 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3399 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3400 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3401 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3403 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3404 fprintf (stderr, ", relocatable");
3406 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3407 fprintf (stderr, ", linkable");
3409 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3410 fprintf (stderr, ", execable");
3412 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3413 fprintf (stderr, ", executable");
3415 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3416 fprintf (stderr, ", unresolved");
3418 fprintf (stderr, "\n\n");
3423 /* Print a short summary of a load command. */
3426 print_load_command (load_hdr, offset, number)
3427 load_union_t *load_hdr;
3431 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3432 char *type_str = (char *) 0;
3436 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3437 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3438 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3439 case LDC_STRINGS: type_str = "STRINGS"; break;
3440 case LDC_REGION: type_str = "REGION"; break;
3441 case LDC_RELOC: type_str = "RELOC"; break;
3442 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3443 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3444 case LDC_ENTRY: type_str = "ENTRY"; break;
3445 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3446 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3450 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3452 (long) load_hdr->hdr.ldci_cmd_size,
3454 (long) load_hdr->hdr.ldci_section_off,
3455 (long) load_hdr->hdr.ldci_section_len);
3457 if (type_str == (char *) 0)
3458 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3460 else if (type != LDC_REGION)
3461 fprintf (stderr, ", ty: %s\n", type_str);
3466 switch (load_hdr->region.regc_usage_type)
3468 case REG_TEXT_T: region = ", .text"; break;
3469 case REG_DATA_T: region = ", .data"; break;
3470 case REG_BSS_T: region = ", .bss"; break;
3471 case REG_GLUE_T: region = ", .glue"; break;
3472 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3473 case REG_RDATA_T: region = ", .rdata"; break;
3474 case REG_SDATA_T: region = ", .sdata"; break;
3475 case REG_SBSS_T: region = ", .sbss"; break;
3479 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3481 (long) load_hdr->region.regc_vm_addr,
3482 (long) load_hdr->region.regc_vm_size,
3490 /* Fatal error when {en,de}code_mach_o_header fails. */
3496 char *msg = (char *) 0;
3500 case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break;
3501 case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break;
3502 case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break;
3503 case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break;
3504 case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break;
3505 case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break;
3508 if (msg == (char *) 0)
3509 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3515 /* Read a file into a memory buffer. */
3517 static struct file_info *
3518 read_file (name, fd, rw)
3519 char *name; /* filename */
3520 int fd; /* file descriptor */
3521 int rw; /* read/write */
3523 struct stat stat_pkt;
3524 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3526 static int page_size;
3529 if (fstat (fd, &stat_pkt) < 0)
3530 fatal_perror ("fstat %s", name);
3533 p->size = stat_pkt.st_size;
3534 p->rounded_size = stat_pkt.st_size;
3540 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3543 page_size = sysconf (_SC_PAGE_SIZE);
3545 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3546 p->start = mmap ((caddr_t) 0,
3547 (rw) ? p->rounded_size : p->size,
3548 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3549 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3553 if (p->start != (char *) 0 && p->start != (char *) -1)
3557 #endif /* USE_MMAP */
3562 fprintf (stderr, "read %s\n", name);
3565 p->start = xmalloc (p->size);
3566 if (lseek (fd, 0L, SEEK_SET) < 0)
3567 fatal_perror ("lseek to 0 on %s", name);
3569 len = read (fd, p->start, p->size);
3571 fatal_perror ("read %s", name);
3574 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3580 /* Do anything necessary to write a file back from memory. */
3584 struct file_info *ptr; /* file information block */
3592 fprintf (stderr, "msync %s\n", ptr->name);
3594 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3595 fatal_perror ("msync %s", ptr->name);
3599 fprintf (stderr, "munmap %s\n", ptr->name);
3601 if (munmap (ptr->start, ptr->size))
3602 fatal_perror ("munmap %s", ptr->name);
3605 #endif /* USE_MMAP */
3612 fprintf (stderr, "write %s\n", ptr->name);
3614 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3615 fatal_perror ("lseek to 0 on %s", ptr->name);
3617 len = write (ptr->fd, ptr->start, ptr->size);
3619 fatal_perror ("write %s", ptr->name);
3621 if (len != ptr->size)
3622 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3631 #endif /* OBJECT_FORMAT_ROSE */