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"
42 /* Obstack allocation and deallocation routines. */
43 #define obstack_chunk_alloc xmalloc
44 #define obstack_chunk_free free
51 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
54 #define WTERMSIG(S) ((S) & 0x7f)
57 #define WIFEXITED(S) (((S) & 0xff) == 0)
60 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
63 extern char *make_temp_file PROTO ((char *));
65 /* On certain systems, we have code that works by scanning the object file
66 directly. But this code uses system-specific header files and library
67 functions, so turn it off in a cross-compiler. Likewise, the names of
68 the utilities are not correct for a cross-compiler; we have to hope that
69 cross-versions are in the proper directories. */
72 #undef SUNOS4_SHARED_LIBRARIES
73 #undef OBJECT_FORMAT_COFF
74 #undef OBJECT_FORMAT_ROSE
76 #undef REAL_LD_FILE_NAME
77 #undef REAL_NM_FILE_NAME
78 #undef REAL_STRIP_FILE_NAME
81 /* If we cannot use a special method, use the ordinary one:
82 run nm to find what symbols are present.
83 In a cross-compiler, this means you need a cross nm,
84 but that is not quite as unpleasant as special headers. */
86 #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
87 #define OBJECT_FORMAT_NONE
90 #ifdef OBJECT_FORMAT_COFF
99 /* Many versions of ldfcn.h define these. */
107 /* Some systems have an ISCOFF macro, but others do not. In some cases
108 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
109 that either do not have an ISCOFF macro in /usr/include or for those
110 where it is wrong. */
113 #define MY_ISCOFF(X) ISCOFF (X)
116 #endif /* OBJECT_FORMAT_COFF */
118 #ifdef OBJECT_FORMAT_ROSE
125 #include <sys/mman.h>
129 #include <mach_o_format.h>
130 #include <mach_o_header.h>
131 #include <mach_o_vals.h>
132 #include <mach_o_types.h>
134 #endif /* OBJECT_FORMAT_ROSE */
136 #ifdef OBJECT_FORMAT_NONE
138 /* Default flags to pass to nm. */
140 #define NM_FLAGS "-p"
143 #endif /* OBJECT_FORMAT_NONE */
145 /* Some systems use __main in a way incompatible with its use in gcc, in these
146 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
147 give the same symbol without quotes for an alternative entry point. You
148 must define both, or neither. */
150 #define NAME__MAIN "__main"
151 #define SYMBOL__MAIN __main
154 #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 #ifndef NO_SYS_SIGLIST
190 #ifndef SYS_SIGLIST_DECLARED
191 extern char *sys_siglist[];
194 extern char *version_string;
196 int vflag; /* true if -v */
197 static int rflag; /* true if -r */
198 static int strip_flag; /* true if -s */
199 #ifdef COLLECT_EXPORT_LIST
200 static int export_flag; /* true if -bE */
203 int debug; /* true if -debug */
205 static int shared_obj; /* true if -shared */
207 static char *c_file; /* <xxx>.c for constructor/destructor list. */
208 static char *o_file; /* <xxx>.o for constructor/destructor list. */
209 #ifdef COLLECT_EXPORT_LIST
210 static char *export_file; /* <xxx>.x for AIX export list. */
211 static char *import_file; /* <xxx>.p for AIX import list. */
213 char *ldout; /* File for ld errors. */
214 static char *output_file; /* Output file for ld. */
215 static char *nm_file_name; /* pathname of nm */
217 static char *ldd_file_name; /* pathname of ldd (or equivalent) */
219 static char *strip_file_name; /* pathname of strip */
220 char *c_file_name; /* pathname of gcc */
221 static char *initname, *fininame; /* names of init and fini funcs */
223 static struct head constructors; /* list of constructors found */
224 static struct head destructors; /* list of destructors found */
225 #ifdef COLLECT_EXPORT_LIST
226 static struct head exports; /* list of exported symbols */
227 static struct head imports; /* list of imported symbols */
228 static struct head undefined; /* list of undefined symbols */
230 static struct head frame_tables; /* list of frame unwind info tables */
232 struct obstack temporary_obstack;
233 struct obstack permanent_obstack;
234 char * temporary_firstobj;
236 /* Defined in the automatically-generated underscore.c. */
237 extern int prepends_underscore;
239 extern char *mktemp ();
240 extern FILE *fdopen ();
242 #ifndef GET_ENVIRONMENT
243 #define GET_ENVIRONMENT(ENV_VALUE,ENV_NAME) ENV_VALUE = getenv (ENV_NAME)
246 /* Structure to hold all the directories in which to search for files to
251 char *prefix; /* String to prepend to the path. */
252 struct prefix_list *next; /* Next in linked list. */
257 struct prefix_list *plist; /* List of prefixes to try */
258 int max_len; /* Max length of a prefix in PLIST */
259 char *name; /* Name of this list (used in config stuff) */
262 #ifdef COLLECT_EXPORT_LIST
263 /* Lists to keep libraries to be scanned for global constructors/destructors. */
264 static struct head libs; /* list of libraries */
265 static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */
266 static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */
267 static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs,
268 &libpath_lib_dirs, NULL};
269 static char *libexts[3] = {"a", "so", NULL}; /* possible library extentions */
272 static char *my_strerror PROTO((int));
273 static void handler PROTO((int));
274 static int is_ctor_dtor PROTO((char *));
275 static char *find_a_file PROTO((struct path_prefix *, char *));
276 static void add_prefix PROTO((struct path_prefix *, char *));
277 static void prefix_from_env PROTO((char *, struct path_prefix *));
278 static void prefix_from_string PROTO((char *, struct path_prefix *));
279 static void do_wait PROTO((char *));
280 static void fork_execute PROTO((char *, char **));
281 static void maybe_unlink PROTO((char *));
282 static void add_to_list PROTO((struct head *, char *));
283 static void write_list PROTO((FILE *, char *, struct id *));
284 #ifdef COLLECT_EXPORT_LIST
285 static void dump_list PROTO((FILE *, char *, struct id *));
288 static void dump_prefix_list PROTO((FILE *, char *, struct prefix_list *));
290 static void write_list_with_asm PROTO((FILE *, char *, struct id *));
291 static void write_c_file PROTO((FILE *, char *));
292 static void scan_prog_file PROTO((char *, enum pass));
293 #ifdef SCAN_LIBRARIES
294 static void scan_libraries PROTO((char *));
296 #ifdef COLLECT_EXPORT_LIST
297 static int is_in_list PROTO((char *, struct id *));
298 static void write_export_file PROTO((FILE *));
299 static void write_import_file PROTO((FILE *));
300 static char *resolve_lib_name PROTO((char *));
301 static int use_import_list PROTO((char *));
302 static int ignore_library PROTO((char *));
322 while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
325 close (fdtmp[--fdx]);
341 static char buffer[30];
345 if (e > 0 && e < sys_nerr)
346 return sys_errlist[e];
348 sprintf (buffer, "Unknown error %d", e);
353 /* Delete tempfiles and exit function. */
356 collect_exit (status)
359 if (c_file != 0 && c_file[0])
360 maybe_unlink (c_file);
362 if (o_file != 0 && o_file[0])
363 maybe_unlink (o_file);
365 #ifdef COLLECT_EXPORT_LIST
366 if (export_file != 0 && export_file[0])
367 maybe_unlink (export_file);
369 if (import_file != 0 && import_file[0])
370 maybe_unlink (import_file);
373 if (ldout != 0 && ldout[0])
376 maybe_unlink (ldout);
379 if (status != 0 && output_file != 0 && output_file[0])
380 maybe_unlink (output_file);
386 /* Die when sys call fails. */
389 fatal_perror (string, arg1, arg2, arg3)
390 char *string, *arg1, *arg2, *arg3;
394 fprintf (stderr, "collect2: ");
395 fprintf (stderr, string, arg1, arg2, arg3);
396 fprintf (stderr, ": %s\n", my_strerror (e));
397 collect_exit (FATAL_EXIT_CODE);
403 fatal (string, arg1, arg2, arg3)
404 char *string, *arg1, *arg2, *arg3;
406 fprintf (stderr, "collect2: ");
407 fprintf (stderr, string, arg1, arg2, arg3);
408 fprintf (stderr, "\n");
409 collect_exit (FATAL_EXIT_CODE);
412 /* Write error message. */
415 error (string, arg1, arg2, arg3, arg4)
416 char *string, *arg1, *arg2, *arg3, *arg4;
418 fprintf (stderr, "collect2: ");
419 fprintf (stderr, string, arg1, arg2, arg3, arg4);
420 fprintf (stderr, "\n");
423 /* In case obstack is linked in, and abort is defined to fancy_abort,
424 provide a default entry. */
429 fatal ("internal error");
437 if (c_file != 0 && c_file[0])
438 maybe_unlink (c_file);
440 if (o_file != 0 && o_file[0])
441 maybe_unlink (o_file);
443 if (ldout != 0 && ldout[0])
444 maybe_unlink (ldout);
446 #ifdef COLLECT_EXPORT_LIST
447 if (export_file != 0 && export_file[0])
448 maybe_unlink (export_file);
450 if (import_file != 0 && import_file[0])
451 maybe_unlink (import_file);
454 signal (signo, SIG_DFL);
455 kill (getpid (), signo);
460 xcalloc (size1, size2)
463 char *ptr = (char *) calloc (size1, size2);
467 fatal ("out of memory");
475 char *ptr = (char *) malloc (size);
479 fatal ("out of memory");
488 register char *value = (char *) realloc (ptr, size);
490 fatal ("virtual memory exhausted");
498 return access (name, R_OK) == 0;
501 /* Make a copy of a string INPUT with size SIZE. */
504 savestring (input, size)
508 char *output = (char *) xmalloc (size + 1);
509 bcopy (input, output, size);
514 /* Parse a reasonable subset of shell quoting syntax. */
531 obstack_1grow (&temporary_obstack, c);
532 else if (! inside && c == ' ')
534 else if (! inside && c == '\\')
539 obstack_1grow (&temporary_obstack, c);
542 obstack_1grow (&temporary_obstack, '\0');
544 return obstack_finish (&temporary_obstack);
551 FILE *stream = fopen (name, "r");
552 int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
559 while (c = getc (stream),
560 c != EOF && (ISALNUM (c) || c == '_' || c == '$' || c == '.'))
561 obstack_1grow (&temporary_obstack, c);
562 if (obstack_object_size (&temporary_obstack) > 0)
564 char *word, *p, *result;
565 obstack_1grow (&temporary_obstack, '\0');
566 word = obstack_finish (&temporary_obstack);
569 ++word, putc ('.', stderr);
571 if (*p == '_' && prepends_underscore)
577 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
582 fputs (result, stderr);
584 diff = strlen (word) - strlen (result);
586 --diff, putc (' ', stderr);
587 while (diff < 0 && c == ' ')
588 ++diff, c = getc (stream);
593 fputs (word, stderr);
596 obstack_free (&temporary_obstack, temporary_firstobj);
605 /* Decide whether the given symbol is:
606 a constructor (1), a destructor (2), or neither (0). */
612 struct names { char *name; int len; int ret; int two_underscores; };
614 register struct names *p;
616 register char *orig_s = s;
618 static struct names special[] = {
619 #ifdef NO_DOLLAR_IN_LABEL
620 #ifdef NO_DOT_IN_LABEL
621 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
622 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
623 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
625 { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
626 { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
627 { "GLOBAL_.F.", sizeof ("GLOBAL_.F.")-1, 5, 0 },
630 { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
631 { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
632 { "GLOBAL_$F$", sizeof ("GLOBAL_$F$")-1, 5, 0 },
634 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
635 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
636 #ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
637 cfront has its own linker procedure to collect them;
638 if collect2 gets them too, they get collected twice
639 when the cfront procedure is run and the compiler used
640 for linking happens to be GCC. */
641 { "sti__", sizeof ("sti__")-1, 1, 1 },
642 { "std__", sizeof ("std__")-1, 2, 1 },
643 #endif /* CFRONT_LOSSAGE */
647 while ((ch = *s) == '_')
653 for (p = &special[0]; p->len > 0; p++)
656 && (!p->two_underscores || ((s - orig_s) >= 2))
657 && strncmp(s, p->name, p->len) == 0)
665 /* Routine to add variables to the environment. */
673 #ifndef VMS /* nor about VMS */
675 extern char **environ;
676 char **old_environ = environ;
683 while ((ch = *p++) != '\0' && ch != '=')
689 /* Search for replacing an existing environment variable, and
690 count the number of total environment variables. */
691 for (envp = old_environ; *envp; envp++)
694 if (!strncmp (str, *envp, name_len))
701 /* Add a new environment variable */
702 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
704 bcopy ((char *) old_environ, (char *) (environ + 1),
705 sizeof (char *) * (num_envs+1));
711 #endif /* HAVE_PUTENV */
713 /* By default, colon separates directories in a path. */
714 #ifndef PATH_SEPARATOR
715 #define PATH_SEPARATOR ':'
718 /* We maintain two prefix lists: one from COMPILER_PATH environment variable
719 and one from the PATH variable. */
721 static struct path_prefix cpath, path;
724 /* This is the name of the target machine. We use it to form the name
725 of the files to execute. */
727 static char *target_machine = TARGET_MACHINE;
730 /* Search for NAME using prefix list PPREFIX. We only look for executable
733 Return 0 if not found, otherwise return its name, allocated with malloc. */
736 find_a_file (pprefix, name)
737 struct path_prefix *pprefix;
741 struct prefix_list *pl;
742 int len = pprefix->max_len + strlen (name) + 1;
745 fprintf (stderr, "Looking for '%s'\n", name);
747 #ifdef EXECUTABLE_SUFFIX
748 len += strlen (EXECUTABLE_SUFFIX);
751 temp = xmalloc (len);
753 /* Determine the filename to execute (special case for absolute paths). */
757 || (DIR_SEPARATOR == '\\' && name[1] == ':'
758 && (name[2] == DIR_SEPARATOR || name[2] == '/'))
762 if (access (name, X_OK) == 0)
767 fprintf (stderr, " - found: absolute path\n");
773 fprintf (stderr, " - failed to locate using absolute path\n");
776 for (pl = pprefix->plist; pl; pl = pl->next)
778 strcpy (temp, pl->prefix);
781 if (access (temp, X_OK) == 0)
784 #ifdef EXECUTABLE_SUFFIX
785 /* Some systems have a suffix for executable files.
786 So try appending that. */
787 strcat (temp, EXECUTABLE_SUFFIX);
789 if (access (temp, X_OK) == 0)
794 if (debug && pprefix->plist == NULL)
795 fprintf (stderr, " - failed: no entries in prefix list\n");
801 /* Add an entry for PREFIX to prefix list PPREFIX. */
804 add_prefix (pprefix, prefix)
805 struct path_prefix *pprefix;
808 struct prefix_list *pl, **prev;
813 for (pl = pprefix->plist; pl->next; pl = pl->next)
818 prev = &pprefix->plist;
820 /* Keep track of the longest prefix */
822 len = strlen (prefix);
823 if (len > pprefix->max_len)
824 pprefix->max_len = len;
826 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
827 pl->prefix = savestring (prefix, len);
832 pl->next = (struct prefix_list *) 0;
836 /* Take the value of the environment variable ENV, break it into a path, and
837 add of the entries to PPREFIX. */
840 prefix_from_env (env, pprefix)
842 struct path_prefix *pprefix;
845 GET_ENVIRONMENT (p, env);
848 prefix_from_string (p, pprefix);
852 prefix_from_string (p, pprefix)
854 struct path_prefix *pprefix;
857 char *nstore = (char *) xmalloc (strlen (p) + 3);
860 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
865 if (*endp == PATH_SEPARATOR || *endp == 0)
867 strncpy (nstore, startp, endp-startp);
870 strcpy (nstore, "./");
872 else if (endp[-1] != '/')
874 nstore[endp-startp] = '/';
875 nstore[endp-startp+1] = 0;
878 nstore[endp-startp] = 0;
881 fprintf (stderr, " - add prefix: %s\n", nstore);
883 add_prefix (pprefix, nstore);
886 endp = startp = endp + 1;
900 char *ld_suffix = "ld";
901 char *full_ld_suffix = ld_suffix;
902 char *real_ld_suffix = "real-ld";
903 char *collect_ld_suffix = "collect-ld";
904 char *nm_suffix = "nm";
905 char *full_nm_suffix = nm_suffix;
906 char *gnm_suffix = "gnm";
907 char *full_gnm_suffix = gnm_suffix;
909 char *ldd_suffix = LDD_SUFFIX;
910 char *full_ldd_suffix = ldd_suffix;
912 char *strip_suffix = "strip";
913 char *full_strip_suffix = strip_suffix;
914 char *gstrip_suffix = "gstrip";
915 char *full_gstrip_suffix = gstrip_suffix;
918 #ifdef COLLECT_EXPORT_LIST
926 char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+3);
927 char **ld1 = ld1_argv;
928 char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+6);
929 char **ld2 = ld2_argv;
930 char **object_lst = (char **) xcalloc (sizeof (char *), argc);
931 char **object = object_lst;
933 int num_c_args = argc+8;
939 /* Parse command line early for instances of -debug. This allows
940 the debug flag to be set before functions like find_a_file()
945 for (i = 1; argv[i] != NULL; i ++)
946 if (! strcmp (argv[i], "-debug"))
951 #ifndef DEFAULT_A_OUT_NAME
952 output_file = "a.out";
954 output_file = DEFAULT_A_OUT_NAME;
957 obstack_begin (&temporary_obstack, 0);
958 obstack_begin (&permanent_obstack, 0);
959 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
961 current_demangling_style = gnu_demangling;
962 p = getenv ("COLLECT_GCC_OPTIONS");
965 char *q = extract_string (&p);
966 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
969 obstack_free (&temporary_obstack, temporary_firstobj);
972 c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
975 fatal ("no arguments");
978 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
979 signal (SIGQUIT, handler);
981 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
982 signal (SIGINT, handler);
984 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
985 signal (SIGALRM, handler);
988 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
989 signal (SIGHUP, handler);
991 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
992 signal (SIGSEGV, handler);
994 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
995 signal (SIGBUS, handler);
998 /* Extract COMPILER_PATH and PATH into our prefix list. */
999 prefix_from_env ("COMPILER_PATH", &cpath);
1000 prefix_from_env ("PATH", &path);
1002 #ifdef CROSS_COMPILE
1003 /* If we look for a program in the compiler directories, we just use
1004 the short name, since these directories are already system-specific.
1005 But it we look for a program in the system directories, we need to
1006 qualify the program name with the target machine. */
1009 = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
1010 strcpy (full_ld_suffix, target_machine);
1011 strcat (full_ld_suffix, "-");
1012 strcat (full_ld_suffix, ld_suffix);
1016 = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
1017 strcpy (full_gld_suffix, target_machine);
1018 strcat (full_gld_suffix, "-");
1019 strcat (full_gld_suffix, gld_suffix);
1023 = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
1024 strcpy (full_nm_suffix, target_machine);
1025 strcat (full_nm_suffix, "-");
1026 strcat (full_nm_suffix, nm_suffix);
1029 = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
1030 strcpy (full_gnm_suffix, target_machine);
1031 strcat (full_gnm_suffix, "-");
1032 strcat (full_gnm_suffix, gnm_suffix);
1036 = xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1);
1037 strcpy (full_ldd_suffix, target_machine);
1038 strcat (full_ldd_suffix, "-");
1039 strcat (full_ldd_suffix, ldd_suffix);
1043 = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
1044 strcpy (full_strip_suffix, target_machine);
1045 strcat (full_strip_suffix, "-");
1046 strcat (full_strip_suffix, strip_suffix);
1049 = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
1050 strcpy (full_gstrip_suffix, target_machine);
1051 strcat (full_gstrip_suffix, "-");
1052 strcat (full_gstrip_suffix, gstrip_suffix);
1053 #endif /* CROSS_COMPILE */
1055 /* Try to discover a valid linker/nm/strip to use. */
1057 /* Maybe we know the right file to use (if not cross). */
1058 #ifdef REAL_LD_FILE_NAME
1059 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
1060 if (ld_file_name == 0)
1062 /* Search the (target-specific) compiler dirs for ld'. */
1063 ld_file_name = find_a_file (&cpath, real_ld_suffix);
1064 /* Likewise for `collect-ld'. */
1065 if (ld_file_name == 0)
1066 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
1067 /* Search the compiler directories for `ld'. We have protection against
1068 recursive calls in find_a_file. */
1069 if (ld_file_name == 0)
1070 ld_file_name = find_a_file (&cpath, ld_suffix);
1071 /* Search the ordinary system bin directories
1072 for `ld' (if native linking) or `TARGET-ld' (if cross). */
1073 if (ld_file_name == 0)
1074 ld_file_name = find_a_file (&path, full_ld_suffix);
1076 #ifdef REAL_NM_FILE_NAME
1077 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
1078 if (nm_file_name == 0)
1080 nm_file_name = find_a_file (&cpath, gnm_suffix);
1081 if (nm_file_name == 0)
1082 nm_file_name = find_a_file (&path, full_gnm_suffix);
1083 if (nm_file_name == 0)
1084 nm_file_name = find_a_file (&cpath, nm_suffix);
1085 if (nm_file_name == 0)
1086 nm_file_name = find_a_file (&path, full_nm_suffix);
1089 ldd_file_name = find_a_file (&cpath, ldd_suffix);
1090 if (ldd_file_name == 0)
1091 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1094 #ifdef REAL_STRIP_FILE_NAME
1095 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1096 if (strip_file_name == 0)
1098 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1099 if (strip_file_name == 0)
1100 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1101 if (strip_file_name == 0)
1102 strip_file_name = find_a_file (&cpath, strip_suffix);
1103 if (strip_file_name == 0)
1104 strip_file_name = find_a_file (&path, full_strip_suffix);
1106 /* Determine the full path name of the C compiler to use. */
1107 c_file_name = getenv ("COLLECT_GCC");
1108 if (c_file_name == 0)
1110 #ifdef CROSS_COMPILE
1111 c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
1112 strcpy (c_file_name, target_machine);
1113 strcat (c_file_name, "-gcc");
1115 c_file_name = "gcc";
1119 p = find_a_file (&cpath, c_file_name);
1121 /* Here it should be safe to use the system search path since we should have
1122 already qualified the name of the compiler when it is needed. */
1124 p = find_a_file (&path, c_file_name);
1129 *ld1++ = *ld2++ = ld_file_name;
1131 /* Make temp file names. */
1132 c_file = make_temp_file (".c");
1133 o_file = make_temp_file (".o");
1134 #ifdef COLLECT_EXPORT_LIST
1135 export_file = make_temp_file (".x");
1136 import_file = make_temp_file (".p");
1138 ldout = make_temp_file (".ld");
1139 *c_ptr++ = c_file_name;
1140 *c_ptr++ = "-lang-c";
1145 #ifdef COLLECT_EXPORT_LIST
1146 /* Generate a list of directories from LIBPATH. */
1147 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1148 /* Add to this list also two standard directories where
1149 AIX loader always searches for libraries. */
1150 add_prefix (&libpath_lib_dirs, "/lib");
1151 add_prefix (&libpath_lib_dirs, "/usr/lib");
1154 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1156 AIX support needs to know if -shared has been specified before
1157 parsing commandline arguments. */
1159 p = getenv ("COLLECT_GCC_OPTIONS");
1162 char *q = extract_string (&p);
1163 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1164 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1165 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1168 obstack_free (&temporary_obstack, temporary_firstobj);
1169 *c_ptr++ = "-fno-exceptions";
1171 /* !!! When GCC calls collect2,
1172 it does not know whether it is calling collect2 or ld.
1173 So collect2 cannot meaningfully understand any options
1174 except those ld understands.
1175 If you propose to make GCC pass some other option,
1176 just imagine what will happen if ld is really ld!!! */
1178 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1179 /* After the first file, put in the c++ rt0. */
1182 while ((arg = *++argv) != (char *) 0)
1184 *ld1++ = *ld2++ = arg;
1190 #ifdef COLLECT_EXPORT_LIST
1191 /* We want to disable automatic exports on AIX when user
1192 explicitly puts an export list in command line */
1194 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1200 if (!strcmp (arg, "-debug"))
1202 /* Already parsed. */
1211 /* place o_file BEFORE this argument! */
1217 #ifdef COLLECT_EXPORT_LIST
1219 /* Resolving full library name. */
1220 char *s = resolve_lib_name (arg+2);
1222 /* If we will use an import list for this library,
1223 we should exclude it from ld args. */
1224 if (use_import_list (s))
1230 /* Saving a full library name. */
1231 add_to_list (&libs, s);
1236 #ifdef COLLECT_EXPORT_LIST
1237 /* Saving directories where to search for libraries. */
1239 add_prefix (&cmdline_lib_dirs, arg+2);
1245 output_file = *ld1++ = *ld2++ = *++argv;
1247 output_file = &arg[2];
1256 if (arg[2] == '\0' && do_collecting)
1258 /* We must strip after the nm run, otherwise C++ linking
1259 will not work. Thus we strip in the second ld run, or
1260 else with strip if there is no second ld run. */
1272 else if ((p = rindex (arg, '.')) != (char *) 0
1273 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1274 || strcmp (p, ".so") == 0))
1283 /* place o_file BEFORE this argument! */
1291 #ifdef COLLECT_EXPORT_LIST
1292 /* libraries can be specified directly, i.e. without -l flag. */
1295 /* If we will use an import list for this library,
1296 we should exclude it from ld args. */
1297 if (use_import_list (arg))
1303 /* Saving a full library name. */
1304 add_to_list (&libs, arg);
1310 #ifdef COLLECT_EXPORT_LIST
1311 /* This is added only for debugging purposes. */
1314 fprintf (stderr, "List of libraries:\n");
1315 dump_list (stderr, "\t", libs.first);
1318 /* The AIX linker will discard static constructors in object files if
1319 nothing else in the file is referenced, so look at them first. */
1321 char **export_object_lst = object_lst;
1322 while (export_object_lst < object)
1323 scan_prog_file (*export_object_lst++, PASS_OBJ);
1326 struct id *list = libs.first;
1327 for (; list; list = list->next)
1328 scan_prog_file (list->name, PASS_FIRST);
1331 char *buf1 = alloca (strlen (export_file) + 5);
1332 char *buf2 = alloca (strlen (import_file) + 5);
1333 sprintf (buf1, "-bE:%s", export_file);
1334 sprintf (buf2, "-bI:%s", import_file);
1339 exportf = fopen (export_file, "w");
1340 if (exportf == (FILE *) 0)
1341 fatal_perror ("%s", export_file);
1342 write_export_file (exportf);
1343 if (fclose (exportf))
1344 fatal_perror ("closing %s", export_file);
1345 importf = fopen (import_file, "w");
1346 if (importf == (FILE *) 0)
1347 fatal_perror ("%s", import_file);
1348 write_import_file (importf);
1349 if (fclose (importf))
1350 fatal_perror ("closing %s", import_file);
1355 *object = *c_ptr = *ld1 = (char *) 0;
1359 fprintf (stderr, "collect2 version %s", version_string);
1360 #ifdef TARGET_VERSION
1363 fprintf (stderr, "\n");
1369 fprintf (stderr, "ld_file_name = %s\n",
1370 (ld_file_name ? ld_file_name : "not found"));
1371 fprintf (stderr, "c_file_name = %s\n",
1372 (c_file_name ? c_file_name : "not found"));
1373 fprintf (stderr, "nm_file_name = %s\n",
1374 (nm_file_name ? nm_file_name : "not found"));
1376 fprintf (stderr, "ldd_file_name = %s\n",
1377 (ldd_file_name ? ldd_file_name : "not found"));
1379 fprintf (stderr, "strip_file_name = %s\n",
1380 (strip_file_name ? strip_file_name : "not found"));
1381 fprintf (stderr, "c_file = %s\n",
1382 (c_file ? c_file : "not found"));
1383 fprintf (stderr, "o_file = %s\n",
1384 (o_file ? o_file : "not found"));
1386 ptr = getenv ("COLLECT_GCC_OPTIONS");
1388 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1390 ptr = getenv ("COLLECT_GCC");
1392 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1394 ptr = getenv ("COMPILER_PATH");
1396 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1398 ptr = getenv ("LIBRARY_PATH");
1400 fprintf (stderr, "LIBRARY_PATH = %s\n", ptr);
1402 fprintf (stderr, "\n");
1405 /* Load the program, searching all libraries and attempting to provide
1406 undefined symbols from repository information. */
1408 /* On AIX we do this later. */
1409 #ifndef COLLECT_EXPORT_LIST
1410 do_tlink (ld1_argv, object_lst);
1413 /* If -r or they will be run via some other method, do not build the
1414 constructor or destructor list, just return now. */
1416 #ifndef COLLECT_EXPORT_LIST
1421 #ifdef COLLECT_EXPORT_LIST
1422 /* But make sure we delete the export file we may have created. */
1423 if (export_file != 0 && export_file[0])
1424 maybe_unlink (export_file);
1425 if (import_file != 0 && import_file[0])
1426 maybe_unlink (import_file);
1428 maybe_unlink (c_file);
1429 maybe_unlink (o_file);
1433 /* Examine the namelist with nm and search it for static constructors
1434 and destructors to call.
1435 Write the constructor and destructor tables to a .s file and reload. */
1437 /* On AIX we already done scanning for global constructors/destructors. */
1438 #ifndef COLLECT_EXPORT_LIST
1439 scan_prog_file (output_file, PASS_FIRST);
1442 #ifdef SCAN_LIBRARIES
1443 scan_libraries (output_file);
1448 fprintf (stderr, "%d constructor(s) found\n", constructors.number);
1449 fprintf (stderr, "%d destructor(s) found\n", destructors.number);
1452 if (constructors.number == 0 && destructors.number == 0
1453 && frame_tables.number == 0
1454 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1455 /* If we will be running these functions ourselves, we want to emit
1456 stubs into the shared library so that we do not have to relink
1457 dependent programs when we add static objects. */
1462 #ifdef COLLECT_EXPORT_LIST
1463 /* Doing tlink without additional code generation */
1464 do_tlink (ld1_argv, object_lst);
1466 /* Strip now if it was requested on the command line. */
1469 char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
1470 strip_argv[0] = strip_file_name;
1471 strip_argv[1] = output_file;
1472 strip_argv[2] = (char *) 0;
1473 fork_execute ("strip", strip_argv);
1476 #ifdef COLLECT_EXPORT_LIST
1477 maybe_unlink (export_file);
1478 maybe_unlink (import_file);
1480 maybe_unlink (c_file);
1481 maybe_unlink (o_file);
1485 maybe_unlink(output_file);
1486 outf = fopen (c_file, "w");
1487 if (outf == (FILE *) 0)
1488 fatal_perror ("%s", c_file);
1490 write_c_file (outf, c_file);
1493 fatal_perror ("closing %s", c_file);
1495 /* Tell the linker that we have initializer and finalizer functions. */
1496 #ifdef LD_INIT_SWITCH
1497 *ld2++ = LD_INIT_SWITCH;
1499 *ld2++ = LD_FINI_SWITCH;
1504 #ifdef COLLECT_EXPORT_LIST
1507 add_to_list (&exports, initname);
1508 add_to_list (&exports, fininame);
1509 add_to_list (&exports, "_GLOBAL__DI");
1510 add_to_list (&exports, "_GLOBAL__DD");
1511 exportf = fopen (export_file, "w");
1512 if (exportf == (FILE *) 0)
1513 fatal_perror ("%s", export_file);
1514 write_export_file (exportf);
1515 if (fclose (exportf))
1516 fatal_perror ("closing %s", export_file);
1522 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1523 output_file, c_file);
1524 write_c_file (stderr, "stderr");
1525 fprintf (stderr, "========== end of c_file\n\n");
1526 #ifdef COLLECT_EXPORT_LIST
1527 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1528 write_export_file (stderr);
1529 fprintf (stderr, "========== end of export_file\n\n");
1533 /* Assemble the constructor and destructor tables.
1534 Link the tables in with the rest of the program. */
1536 fork_execute ("gcc", c_argv);
1537 #ifdef COLLECT_EXPORT_LIST
1538 /* On AIX we must call tlink because of possible templates resolution */
1539 do_tlink (ld2_argv, object_lst);
1541 /* Otherwise, simply call ld because tlink is already done */
1542 fork_execute ("ld", ld2_argv);
1544 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1545 constructors/destructors in shared libraries. */
1546 scan_prog_file (output_file, PASS_SECOND);
1549 maybe_unlink (c_file);
1550 maybe_unlink (o_file);
1552 #ifdef COLLECT_EXPORT_LIST
1553 maybe_unlink (export_file);
1554 maybe_unlink (import_file);
1561 /* Wait for a process to finish, and exit if a non-zero status is found. */
1572 if (WIFSIGNALED (status))
1574 int sig = WTERMSIG (status);
1575 #ifdef NO_SYS_SIGLIST
1576 error ("%s terminated with signal %d %s",
1579 (status & 0200) ? ", core dumped" : "");
1581 error ("%s terminated with signal %d [%s]%s",
1585 (status & 0200) ? ", core dumped" : "");
1588 collect_exit (FATAL_EXIT_CODE);
1591 if (WIFEXITED (status))
1592 return WEXITSTATUS (status);
1601 int ret = collect_wait (prog);
1604 error ("%s returned %d exit status", prog, ret);
1610 /* Fork and execute a program, and wait for the reply. */
1613 collect_execute (prog, argv, redir)
1626 fprintf (stderr, "%s", argv[0]);
1628 fprintf (stderr, "[cannot find %s]", prog);
1630 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1631 fprintf (stderr, " %s", str);
1633 fprintf (stderr, "\n");
1639 /* If we cannot find a program we need, complain error. Do this here
1640 since we might not end up needing something that we could not find. */
1643 fatal ("cannot find `%s'", prog);
1645 #ifndef __CYGWIN32__
1650 fatal_perror ("fork");
1652 fatal_perror ("vfork");
1656 if (pid == 0) /* child context */
1661 if (freopen (redir, "a", stdout) == NULL)
1662 fatal_perror ("redirecting stdout: %s", redir);
1663 if (freopen (redir, "a", stderr) == NULL)
1664 fatal_perror ("redirecting stderr: %s", redir);
1667 execvp (argv[0], argv);
1668 fatal_perror ("executing %s", prog);
1671 pid = _spawnvp (_P_NOWAIT, argv[0], argv);
1673 fatal ("spawnvp failed");
1678 fork_execute (prog, argv)
1682 collect_execute (prog, argv, NULL);
1686 /* Unlink a file unless we are debugging. */
1695 fprintf (stderr, "[Leaving %s]\n", file);
1699 /* Add a name to a linked list. */
1702 add_to_list (head_ptr, name)
1703 struct head *head_ptr;
1707 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1709 static long sequence_number = 0;
1710 strcpy (newid->name, name);
1712 if (head_ptr->first)
1713 head_ptr->last->next = newid;
1715 head_ptr->first = newid;
1717 /* Check for duplicate symbols. */
1718 for (p = head_ptr->first;
1719 strcmp (name, p->name) != 0;
1724 head_ptr->last->next = 0;
1729 newid->sequence = ++sequence_number;
1730 head_ptr->last = newid;
1734 /* Write: `prefix', the names on list LIST, `suffix'. */
1737 write_list (stream, prefix, list)
1744 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1749 #ifdef COLLECT_EXPORT_LIST
1750 /* This function is really used only on AIX, but may be useful. */
1752 is_in_list (prefix, list)
1758 if (!strcmp (prefix, list->name)) return 1;
1765 /* Added for debugging purpose. */
1766 #ifdef COLLECT_EXPORT_LIST
1768 dump_list (stream, prefix, list)
1775 fprintf (stream, "%s%s,\n", prefix, list->name);
1783 dump_prefix_list (stream, prefix, list)
1786 struct prefix_list *list;
1790 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1797 write_list_with_asm (stream, prefix, list)
1804 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1805 prefix, list->sequence, list->name);
1810 /* Write out the constructor and destructor tables statically (for a shared
1811 object), along with the functions to execute them. */
1814 write_c_file_stat (stream, name)
1818 char *prefix, *p, *q;
1819 int frames = (frame_tables.number > 0);
1821 /* Figure out name of output_file, stripping off .so version. */
1822 p = rindex (output_file, '/');
1824 p = (char *) output_file;
1838 if (strncmp (q, ".so", 3) == 0)
1847 /* q points to null at end of the string (or . of the .so version) */
1848 prefix = xmalloc (q - p + 1);
1849 strncpy (prefix, p, q - p);
1851 for (q = prefix; *q; q++)
1855 fprintf (stderr, "\nwrite_c_file - output name is %s, prefix is %s\n",
1856 output_file, prefix);
1858 #define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
1859 initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
1860 sprintf (initname, INIT_NAME_FORMAT, prefix);
1862 #define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
1863 fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
1864 sprintf (fininame, FINI_NAME_FORMAT, prefix);
1868 /* Write the tables as C code */
1870 fprintf (stream, "static int count;\n");
1871 fprintf (stream, "typedef void entry_pt();\n");
1872 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1876 write_list_with_asm (stream, "extern void *", frame_tables.first);
1878 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1879 write_list (stream, "\t\t&", frame_tables.first);
1880 fprintf (stream, "\t0\n};\n");
1882 /* This must match what's in frame.h. */
1883 fprintf (stream, "struct object {\n");
1884 fprintf (stream, " void *pc_begin;\n");
1885 fprintf (stream, " void *pc_end;\n");
1886 fprintf (stream, " void *fde_begin;\n");
1887 fprintf (stream, " void *fde_array;\n");
1888 fprintf (stream, " __SIZE_TYPE__ count;\n");
1889 fprintf (stream, " struct object *next;\n");
1890 fprintf (stream, "};\n");
1892 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1893 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1895 fprintf (stream, "static void reg_frame () {\n");
1896 fprintf (stream, "\tstatic struct object ob;\n");
1897 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1898 fprintf (stream, "\t}\n");
1900 fprintf (stream, "static void dereg_frame () {\n");
1901 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1902 fprintf (stream, "\t}\n");
1905 fprintf (stream, "void %s() {\n", initname);
1906 if (constructors.number > 0 || frames)
1908 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1909 write_list (stream, "\t\t", constructors.first);
1911 fprintf (stream, "\treg_frame,\n");
1912 fprintf (stream, "\t};\n");
1913 fprintf (stream, "\tentry_pt **p;\n");
1914 fprintf (stream, "\tif (count++ != 0) return;\n");
1915 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
1916 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1919 fprintf (stream, "\t++count;\n");
1920 fprintf (stream, "}\n");
1921 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1922 fprintf (stream, "void %s() {\n", fininame);
1923 if (destructors.number > 0 || frames)
1925 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1926 write_list (stream, "\t\t", destructors.first);
1928 fprintf (stream, "\tdereg_frame,\n");
1929 fprintf (stream, "\t};\n");
1930 fprintf (stream, "\tentry_pt **p;\n");
1931 fprintf (stream, "\tif (--count != 0) return;\n");
1932 fprintf (stream, "\tp = dtors;\n");
1933 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
1934 destructors.number + frames);
1936 fprintf (stream, "}\n");
1940 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
1941 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
1945 /* Write the constructor/destructor tables. */
1947 #ifndef LD_INIT_SWITCH
1949 write_c_file_glob (stream, name)
1953 /* Write the tables as C code */
1955 int frames = (frame_tables.number > 0);
1957 fprintf (stream, "typedef void entry_pt();\n\n");
1959 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1963 write_list_with_asm (stream, "extern void *", frame_tables.first);
1965 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1966 write_list (stream, "\t\t&", frame_tables.first);
1967 fprintf (stream, "\t0\n};\n");
1969 /* This must match what's in frame.h. */
1970 fprintf (stream, "struct object {\n");
1971 fprintf (stream, " void *pc_begin;\n");
1972 fprintf (stream, " void *pc_end;\n");
1973 fprintf (stream, " void *fde_begin;\n");
1974 fprintf (stream, " void *fde_array;\n");
1975 fprintf (stream, " __SIZE_TYPE__ count;\n");
1976 fprintf (stream, " struct object *next;\n");
1977 fprintf (stream, "};\n");
1979 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1980 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1982 fprintf (stream, "static void reg_frame () {\n");
1983 fprintf (stream, "\tstatic struct object ob;\n");
1984 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1985 fprintf (stream, "\t}\n");
1987 fprintf (stream, "static void dereg_frame () {\n");
1988 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1989 fprintf (stream, "\t}\n");
1992 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
1993 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
1994 write_list (stream, "\t", constructors.first);
1996 fprintf (stream, "\treg_frame,\n");
1997 fprintf (stream, "\t0\n};\n\n");
1999 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2001 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2002 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2003 write_list (stream, "\t", destructors.first);
2005 fprintf (stream, "\tdereg_frame,\n");
2006 fprintf (stream, "\t0\n};\n\n");
2008 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2009 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2011 #endif /* ! LD_INIT_SWITCH */
2014 write_c_file (stream, name)
2018 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2019 #ifndef LD_INIT_SWITCH
2021 write_c_file_glob (stream, name);
2024 write_c_file_stat (stream, name);
2025 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2028 #ifdef COLLECT_EXPORT_LIST
2030 write_export_file (stream)
2033 struct id *list = exports.first;
2034 for (; list; list = list->next)
2035 fprintf (stream, "%s\n", list->name);
2039 write_import_file (stream)
2042 struct id *list = imports.first;
2043 fprintf (stream, "%s\n", "#! .");
2044 for (; list; list = list->next)
2045 fprintf (stream, "%s\n", list->name);
2049 #ifdef OBJECT_FORMAT_NONE
2051 /* Generic version to scan the name list of the loaded program for
2052 the symbols g++ uses for static constructors and destructors.
2054 The constructor table begins at __CTOR_LIST__ and contains a count
2055 of the number of pointers (or -1 if the constructors are built in a
2056 separate section by the linker), followed by the pointers to the
2057 constructor functions, terminated with a null pointer. The
2058 destructor table has the same format, and begins at __DTOR_LIST__. */
2061 scan_prog_file (prog_name, which_pass)
2063 enum pass which_pass;
2065 void (*int_handler) ();
2066 void (*quit_handler) ();
2074 if (which_pass == PASS_SECOND)
2077 /* If we do not have an `nm', complain. */
2078 if (nm_file_name == 0)
2079 fatal ("cannot find `nm'");
2081 nm_argv[argc++] = nm_file_name;
2082 if (NM_FLAGS[0] != '\0')
2083 nm_argv[argc++] = NM_FLAGS;
2085 nm_argv[argc++] = prog_name;
2086 nm_argv[argc++] = (char *) 0;
2088 if (pipe (pipe_fd) < 0)
2089 fatal_perror ("pipe");
2091 inf = fdopen (pipe_fd[0], "r");
2092 if (inf == (FILE *) 0)
2093 fatal_perror ("fdopen");
2095 /* Trace if needed. */
2101 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2102 fprintf (stderr, " %s", str);
2104 fprintf (stderr, "\n");
2110 /* Spawn child nm on pipe */
2115 fatal_perror ("fork");
2117 fatal_perror ("vfork");
2121 if (pid == 0) /* child context */
2124 if (dup2 (pipe_fd[1], 1) < 0)
2125 fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
2127 if (close (pipe_fd[0]) < 0)
2128 fatal_perror ("close (%d)", pipe_fd[0]);
2130 if (close (pipe_fd[1]) < 0)
2131 fatal_perror ("close (%d)", pipe_fd[1]);
2133 execv (nm_file_name, nm_argv);
2134 fatal_perror ("executing %s", nm_file_name);
2137 /* Parent context from here on. */
2138 int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
2140 quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
2143 if (close (pipe_fd[1]) < 0)
2144 fatal_perror ("close (%d)", pipe_fd[1]);
2147 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2149 /* Read each line of nm output. */
2150 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2155 /* If it contains a constructor or destructor name, add the name
2156 to the appropriate list. */
2158 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2159 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2166 /* Find the end of the symbol name.
2167 Do not include `|', because Encore nm can tack that on the end. */
2168 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2174 switch (is_ctor_dtor (name))
2177 if (which_pass != PASS_LIB)
2178 add_to_list (&constructors, name);
2182 if (which_pass != PASS_LIB)
2183 add_to_list (&destructors, name);
2187 if (which_pass != PASS_LIB)
2188 fatal ("init function found in object %s", prog_name);
2189 #ifndef LD_INIT_SWITCH
2190 add_to_list (&constructors, name);
2195 if (which_pass != PASS_LIB)
2196 fatal ("fini function found in object %s", prog_name);
2197 #ifndef LD_FINI_SWITCH
2198 add_to_list (&destructors, name);
2203 if (which_pass != PASS_LIB)
2204 add_to_list (&frame_tables, name);
2206 default: /* not a constructor or destructor */
2211 fprintf (stderr, "\t%s\n", buf);
2215 fprintf (stderr, "\n");
2217 if (fclose (inf) != 0)
2218 fatal_perror ("fclose of pipe");
2220 do_wait (nm_file_name);
2222 signal (SIGINT, int_handler);
2224 signal (SIGQUIT, quit_handler);
2228 #if SUNOS4_SHARED_LIBRARIES
2230 /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2231 that the output file depends upon and their initialization/finalization
2232 routines, if any. */
2237 #include <sys/mman.h>
2238 #include <sys/param.h>
2240 #include <sys/dir.h>
2242 /* pointers to the object file */
2243 unsigned object; /* address of memory mapped file */
2244 unsigned objsize; /* size of memory mapped to file */
2245 char * code; /* pointer to code segment */
2246 char * data; /* pointer to data segment */
2247 struct nlist *symtab; /* pointer to symbol table */
2248 struct link_dynamic *ld;
2249 struct link_dynamic_2 *ld_2;
2250 struct head libraries;
2252 /* Map the file indicated by NAME into memory and store its address. */
2260 if ((fp = open (name, O_RDONLY)) == -1)
2261 fatal ("unable to open file '%s'", name);
2262 if (fstat (fp, &s) == -1)
2263 fatal ("unable to stat file '%s'", name);
2265 objsize = s.st_size;
2266 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2269 fatal ("unable to mmap file '%s'", name);
2274 /* Helpers for locatelib. */
2276 static char *libname;
2282 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2285 /* If one file has an additional numeric extension past LIBNAME, then put
2286 that one first in the sort. If both files have additional numeric
2287 extensions, then put the one with the higher number first in the sort.
2289 We must verify that the extension is numeric, because Sun saves the
2290 original versions of patched libraries with a .FCS extension. Files with
2291 invalid extensions must go last in the sort, so that they will not be used. */
2295 struct direct **d1, **d2;
2297 int i1, i2 = strlen (libname);
2298 char *e1 = (*d1)->d_name + i2;
2299 char *e2 = (*d2)->d_name + i2;
2301 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2302 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2306 i1 = strtol (e1, &e1, 10);
2307 i2 = strtol (e2, &e2, 10);
2314 /* It has a valid numeric extension, prefer this one. */
2315 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2317 /* It has a invalid numeric extension, must prefer the other one. */
2323 /* It has a valid numeric extension, prefer this one. */
2324 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2326 /* It has a invalid numeric extension, must prefer the other one. */
2334 /* Given the name NAME of a dynamic dependency, find its pathname and add
2335 it to the list of libraries. */
2343 char buf[MAXPATHLEN];
2351 /* counting elements in array, need 1 extra for null */
2353 ld_rules = (char *) (ld_2->ld_rules + code);
2357 for (; *ld_rules != 0; ld_rules++)
2358 if (*ld_rules == ':')
2360 ld_rules = (char *) (ld_2->ld_rules + code);
2361 ldr = (char *) malloc (strlen (ld_rules) + 1);
2362 strcpy (ldr, ld_rules);
2364 p = getenv ("LD_LIBRARY_PATH");
2369 for (q = p ; *q != 0; q++)
2372 q = (char *) malloc (strlen (p) + 1);
2375 l = (char **) malloc ((cnt + 3) * sizeof (char *));
2380 for (; *ldr != 0; ldr++)
2390 for (; *q != 0; q++)
2397 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2400 *pp++ = "/usr/local/lib";
2404 for (pp = l; *pp != 0 ; pp++)
2406 struct direct **namelist;
2408 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2410 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2411 add_to_list (&libraries, buf);
2413 fprintf (stderr, "%s\n", buf);
2420 fprintf (stderr, "not found\n");
2422 fatal ("dynamic dependency %s not found", name);
2426 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2427 that it depends upon and any constructors or destructors they contain. */
2430 scan_libraries (prog_name)
2433 struct exec *header;
2435 struct link_object *lo;
2436 char buff[MAXPATHLEN];
2439 mapfile (prog_name);
2440 header = (struct exec *)object;
2441 if (N_BADMAG (*header))
2442 fatal ("bad magic number in file '%s'", prog_name);
2443 if (header->a_dynamic == 0)
2446 code = (char *) (N_TXTOFF (*header) + (long) header);
2447 data = (char *) (N_DATOFF (*header) + (long) header);
2448 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2450 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2453 ld = (struct link_dynamic *) (symtab->n_value + code);
2459 ld = (struct link_dynamic *) data;
2464 fprintf (stderr, "dynamic dependencies.\n");
2466 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2467 for (lo = (struct link_object *) ld_2->ld_need; lo;
2468 lo = (struct link_object *) lo->lo_next)
2471 lo = (struct link_object *) ((long) lo + code);
2472 name = (char *) (code + lo->lo_name);
2476 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2477 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2483 fprintf (stderr, "\t%s\n", name);
2484 add_to_list (&libraries, name);
2489 fprintf (stderr, "\n");
2491 /* now iterate through the library list adding their symbols to
2493 for (list = libraries.first; list; list = list->next)
2494 scan_prog_file (list->name, PASS_LIB);
2497 #else /* SUNOS4_SHARED_LIBRARIES */
2500 /* Use the List Dynamic Dependencies program to find shared libraries that
2501 the output file depends upon and their initialization/finalization
2502 routines, if any. */
2505 scan_libraries (prog_name)
2508 static struct head libraries; /* list of shared libraries found */
2510 void (*int_handler) ();
2511 void (*quit_handler) ();
2519 /* If we do not have an `ldd', complain. */
2520 if (ldd_file_name == 0)
2522 error ("cannot find `ldd'");
2526 ldd_argv[argc++] = ldd_file_name;
2527 ldd_argv[argc++] = prog_name;
2528 ldd_argv[argc++] = (char *) 0;
2530 if (pipe (pipe_fd) < 0)
2531 fatal_perror ("pipe");
2533 inf = fdopen (pipe_fd[0], "r");
2534 if (inf == (FILE *) 0)
2535 fatal_perror ("fdopen");
2537 /* Trace if needed. */
2543 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2544 fprintf (stderr, " %s", str);
2546 fprintf (stderr, "\n");
2552 /* Spawn child ldd on pipe */
2557 fatal_perror ("fork");
2559 fatal_perror ("vfork");
2563 if (pid == 0) /* child context */
2566 if (dup2 (pipe_fd[1], 1) < 0)
2567 fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
2569 if (close (pipe_fd[0]) < 0)
2570 fatal_perror ("close (%d)", pipe_fd[0]);
2572 if (close (pipe_fd[1]) < 0)
2573 fatal_perror ("close (%d)", pipe_fd[1]);
2575 execv (ldd_file_name, ldd_argv);
2576 fatal_perror ("executing %s", ldd_file_name);
2579 /* Parent context from here on. */
2580 int_handler = (void (*) ()) signal (SIGINT, SIG_IGN);
2582 quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN);
2585 if (close (pipe_fd[1]) < 0)
2586 fatal_perror ("close (%d)", pipe_fd[1]);
2589 fprintf (stderr, "\nldd output with constructors/destructors.\n");
2591 /* Read each line of ldd output. */
2592 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2595 char *name, *end, *p = buf;
2597 /* Extract names of libraries and add to list. */
2598 PARSE_LDD_OUTPUT (p);
2603 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2604 fatal ("dynamic dependency %s not found", buf);
2606 /* Find the end of the symbol name. */
2608 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2613 if (access (name, R_OK) == 0)
2614 add_to_list (&libraries, name);
2616 fatal ("unable to open dynamic dependency '%s'", buf);
2619 fprintf (stderr, "\t%s\n", buf);
2622 fprintf (stderr, "\n");
2624 if (fclose (inf) != 0)
2625 fatal_perror ("fclose of pipe");
2627 do_wait (ldd_file_name);
2629 signal (SIGINT, int_handler);
2631 signal (SIGQUIT, quit_handler);
2634 /* now iterate through the library list adding their symbols to
2636 for (list = libraries.first; list; list = list->next)
2637 scan_prog_file (list->name, PASS_LIB);
2640 #endif /* LDD_SUFFIX */
2641 #endif /* SUNOS4_SHARED_LIBRARIES */
2643 #endif /* OBJECT_FORMAT_NONE */
2647 * COFF specific stuff.
2650 #ifdef OBJECT_FORMAT_COFF
2652 #if defined(EXTENDED_COFF)
2653 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2654 # define GCC_SYMENT SYMR
2655 # define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText)
2656 # define GCC_SYMINC(X) (1)
2657 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2658 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2660 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2661 # define GCC_SYMENT SYMENT
2662 # define GCC_OK_SYMBOL(X) \
2663 (((X).n_sclass == C_EXT) && \
2664 ((X).n_scnum > N_UNDEF) && \
2665 (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \
2666 ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))
2667 # define GCC_UNDEF_SYMBOL(X) \
2668 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
2669 # define GCC_SYMINC(X) ((X).n_numaux+1)
2670 # define GCC_SYMZERO(X) 0
2671 # define GCC_CHECK_HDR(X) (1)
2674 extern char *ldgetname ();
2676 /* COFF version to scan the name list of the loaded program for
2677 the symbols g++ uses for static constructors and destructors.
2679 The constructor table begins at __CTOR_LIST__ and contains a count
2680 of the number of pointers (or -1 if the constructors are built in a
2681 separate section by the linker), followed by the pointers to the
2682 constructor functions, terminated with a null pointer. The
2683 destructor table has the same format, and begins at __DTOR_LIST__. */
2686 scan_prog_file (prog_name, which_pass)
2688 enum pass which_pass;
2690 LDFILE *ldptr = NULL;
2691 int sym_index, sym_count;
2693 #ifdef COLLECT_EXPORT_LIST
2694 /* Should we generate an import list for given prog_name? */
2695 int import_flag = (which_pass == PASS_OBJ ? 0 : use_import_list (prog_name));
2698 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
2701 #ifdef COLLECT_EXPORT_LIST
2702 /* We do not need scanning for some standard C libraries. */
2703 if (which_pass == PASS_FIRST && ignore_library (prog_name))
2706 /* On AIX we have a loop, because there is not much difference
2707 between an object and an archive. This trick allows us to
2708 eliminate scan_libraries() function. */
2712 if ((ldptr = ldopen (prog_name, ldptr)) != NULL)
2715 if (!MY_ISCOFF (HEADER (ldptr).f_magic))
2716 fatal ("%s: not a COFF file", prog_name);
2718 #ifdef COLLECT_EXPORT_LIST
2719 /* Is current archive member a shared object? */
2720 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2722 if (GCC_CHECK_HDR (ldptr))
2724 sym_count = GCC_SYMBOLS (ldptr);
2725 sym_index = GCC_SYMZERO (ldptr);
2726 while (sym_index < sym_count)
2730 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2732 sym_index += GCC_SYMINC (symbol);
2734 if (GCC_OK_SYMBOL (symbol))
2738 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2739 continue; /* should never happen */
2741 #ifdef XCOFF_DEBUGGING_INFO
2742 /* All AIX function names have a duplicate entry
2743 beginning with a dot. */
2748 switch (is_ctor_dtor (name))
2751 if (! is_shared) add_to_list (&constructors, name);
2752 #ifdef COLLECT_EXPORT_LIST
2753 if (which_pass == PASS_OBJ)
2754 add_to_list (&exports, name);
2755 /* If this symbol was undefined and we are building
2756 an import list, we should add a symbol to this
2760 && is_in_list (name, undefined.first))
2761 add_to_list (&imports, name);
2766 if (! is_shared) add_to_list (&destructors, name);
2767 #ifdef COLLECT_EXPORT_LIST
2768 if (which_pass == PASS_OBJ)
2769 add_to_list (&exports, name);
2770 /* If this symbol was undefined and we are building
2771 an import list, we should add a symbol to this
2775 && is_in_list (name, undefined.first))
2776 add_to_list (&imports, name);
2780 #ifdef COLLECT_EXPORT_LIST
2783 add_to_list (&constructors, name);
2788 add_to_list (&destructors, name);
2792 default: /* not a constructor or destructor */
2793 #ifdef COLLECT_EXPORT_LIST
2794 /* If we are building a shared object on AIX we need
2795 to explicitly export all global symbols or add
2796 them to import list. */
2799 if (which_pass == PASS_OBJ && (! export_flag))
2800 add_to_list (&exports, name);
2801 else if (! is_shared && which_pass == PASS_FIRST
2803 && is_in_list(name, undefined.first))
2804 add_to_list (&imports, name);
2810 #if !defined(EXTENDED_COFF)
2812 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2813 symbol.n_scnum, symbol.n_sclass,
2814 (symbol.n_type ? "0" : ""), symbol.n_type,
2819 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
2820 symbol.iss, (long) symbol.value, symbol.index, name);
2823 #ifdef COLLECT_EXPORT_LIST
2824 /* If we are building a shared object we should collect
2825 information about undefined symbols for later
2826 import list generation. */
2827 else if (shared_obj && GCC_UNDEF_SYMBOL (symbol))
2831 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2832 continue; /* should never happen */
2834 /* All AIX function names have a duplicate entry
2835 beginning with a dot. */
2838 add_to_list (&undefined, name);
2846 fatal ("%s: cannot open as COFF file", prog_name);
2848 #ifdef COLLECT_EXPORT_LIST
2849 /* On AIX loop continues while there are more members in archive. */
2851 while (ldclose (ldptr) == FAILURE);
2853 /* Otherwise we simply close ldptr. */
2854 (void) ldclose(ldptr);
2859 #ifdef COLLECT_EXPORT_LIST
2861 /* This new function is used to decide whether we should
2862 generate import list for an object or to use it directly. */
2864 use_import_list (prog_name)
2869 /* If we do not build a shared object then import list should not be used. */
2870 if (! shared_obj) return 0;
2872 /* Currently we check only for libgcc, but this can be changed in future. */
2873 p = strstr (prog_name, "libgcc.a");
2874 if (p != 0 && (strlen (p) == sizeof ("libgcc.a") - 1))
2879 /* Given a library name without "lib" prefix, this function
2880 returns a full library name including a path. */
2882 resolve_lib_name (name)
2888 for (i = 0; libpaths[i]; i++)
2889 if (libpaths[i]->max_len > l)
2890 l = libpaths[i]->max_len;
2892 lib_buf = xmalloc (l + strlen(name) + 10);
2894 for (i = 0; libpaths[i]; i++)
2896 struct prefix_list *list = libpaths[i]->plist;
2897 for (; list; list = list->next)
2899 for (j = 0; libexts[j]; j++)
2901 /* The following lines are needed because path_prefix list
2902 may contain directories both with trailing '/' and
2905 if (list->prefix[strlen(list->prefix)-1] != '/')
2907 sprintf (lib_buf, "%s%slib%s.%s",
2908 list->prefix, p, name, libexts[j]);
2909 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
2910 if (file_exists (lib_buf))
2912 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
2919 fprintf (stderr, "not found\n");
2921 fatal ("Library lib%s not found", name);
2925 /* Array of standard AIX libraries which should not
2926 be scanned for ctors/dtors. */
2927 static char* aix_std_libs[] = {
2932 "/usr/lib/libc_r.a",
2933 "/usr/lib/threads/libc.a",
2934 "/usr/ccs/lib/libc.a",
2935 "/usr/ccs/lib/libc_r.a",
2939 /* This function checks the filename and returns 1
2940 if this name matches the location of a standard AIX library. */
2942 ignore_library (name)
2945 char **p = &aix_std_libs[0];
2946 while (*p++ != NULL)
2947 if (! strcmp (name, *p)) return 1;
2953 #endif /* OBJECT_FORMAT_COFF */
2957 * OSF/rose specific stuff.
2960 #ifdef OBJECT_FORMAT_ROSE
2962 /* Union of the various load commands */
2964 typedef union load_union
2966 ldc_header_t hdr; /* common header */
2967 load_cmd_map_command_t map; /* map indexing other load cmds */
2968 interpreter_command_t iprtr; /* interpreter pathname */
2969 strings_command_t str; /* load commands strings section */
2970 region_command_t region; /* region load command */
2971 reloc_command_t reloc; /* relocation section */
2972 package_command_t pkg; /* package load command */
2973 symbols_command_t sym; /* symbol sections */
2974 entry_command_t ent; /* program start section */
2975 gen_info_command_t info; /* object information */
2976 func_table_command_t func; /* function constructors/destructors */
2979 /* Structure to point to load command and data section in memory. */
2981 typedef struct load_all
2983 load_union_t *load; /* load command */
2984 char *section; /* pointer to section */
2987 /* Structure to contain information about a file mapped into memory. */
2991 char *start; /* start of map */
2992 char *name; /* filename */
2993 long size; /* size of the file */
2994 long rounded_size; /* size rounded to page boundary */
2995 int fd; /* file descriptor */
2996 int rw; /* != 0 if opened read/write */
2997 int use_mmap; /* != 0 if mmap'ed */
3000 extern int decode_mach_o_hdr ();
3001 extern int encode_mach_o_hdr ();
3003 static void add_func_table PROTO((mo_header_t *, load_all_t *,
3004 symbol_info_t *, int));
3005 static void print_header PROTO((mo_header_t *));
3006 static void print_load_command PROTO((load_union_t *, size_t, int));
3007 static void bad_header PROTO((int));
3008 static struct file_info *read_file PROTO((char *, int, int));
3009 static void end_file PROTO((struct file_info *));
3011 /* OSF/rose specific version to scan the name list of the loaded
3012 program for the symbols g++ uses for static constructors and
3015 The constructor table begins at __CTOR_LIST__ and contains a count
3016 of the number of pointers (or -1 if the constructors are built in a
3017 separate section by the linker), followed by the pointers to the
3018 constructor functions, terminated with a null pointer. The
3019 destructor table has the same format, and begins at __DTOR_LIST__. */
3022 scan_prog_file (prog_name, which_pass)
3024 enum pass which_pass;
3028 load_all_t *load_array;
3029 load_all_t *load_end;
3030 load_all_t *load_cmd;
3031 int symbol_load_cmds;
3037 struct file_info *obj_file;
3039 mo_lcid_t cmd_strings = -1;
3040 symbol_info_t *main_sym = 0;
3041 int rw = (which_pass != PASS_FIRST);
3043 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3045 fatal_perror ("cannot read %s", prog_name);
3047 obj_file = read_file (prog_name, prog_fd, rw);
3048 obj = obj_file->start;
3050 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3051 if (status != MO_HDR_CONV_SUCCESS)
3052 bad_header (status);
3055 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3056 since the hardware will automatically swap bytes for us on loading little endian
3059 #ifndef CROSS_COMPILE
3060 if (hdr.moh_magic != MOH_MAGIC_MSB
3061 || hdr.moh_header_version != MOH_HEADER_VERSION
3062 || hdr.moh_byte_order != OUR_BYTE_ORDER
3063 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3064 || hdr.moh_cpu_type != OUR_CPU_TYPE
3065 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3066 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3068 fatal ("incompatibilities between object file & expected values");
3073 print_header (&hdr);
3075 offset = hdr.moh_first_cmd_off;
3076 load_end = load_array
3077 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3079 /* Build array of load commands, calculating the offsets */
3080 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3082 load_union_t *load_hdr; /* load command header */
3084 load_cmd = load_end++;
3085 load_hdr = (load_union_t *) (obj + offset);
3087 /* If modifying the program file, copy the header. */
3090 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3091 bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
3094 /* null out old command map, because we will rewrite at the end. */
3095 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3097 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3098 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3102 load_cmd->load = load_hdr;
3103 if (load_hdr->hdr.ldci_section_off > 0)
3104 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3107 print_load_command (load_hdr, offset, i);
3109 offset += load_hdr->hdr.ldci_cmd_size;
3112 /* If the last command is the load command map and is not undefined,
3113 decrement the count of load commands. */
3114 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3117 hdr.moh_n_load_cmds--;
3120 /* Go through and process each symbol table section. */
3121 symbol_load_cmds = 0;
3122 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3124 load_union_t *load_hdr = load_cmd->load;
3126 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3132 char *kind = "unknown";
3134 switch (load_hdr->sym.symc_kind)
3136 case SYMC_IMPORTS: kind = "imports"; break;
3137 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3138 case SYMC_STABS: kind = "stabs"; break;
3141 fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3142 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3145 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3148 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3149 if (str_sect == (char *) 0)
3150 fatal ("string section missing");
3152 if (load_cmd->section == (char *) 0)
3153 fatal ("section pointer missing");
3155 num_syms = load_hdr->sym.symc_nentries;
3156 for (i = 0; i < num_syms; i++)
3158 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3159 char *name = sym->si_name.symbol_name + str_sect;
3166 char *n = name + strlen (name) - strlen (NAME__MAIN);
3168 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3178 switch (is_ctor_dtor (name))
3181 add_to_list (&constructors, name);
3185 add_to_list (&destructors, name);
3188 default: /* not a constructor or destructor */
3194 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3195 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3200 if (symbol_load_cmds == 0)
3201 fatal ("no symbol table found");
3203 /* Update the program file now, rewrite header and load commands. At present,
3204 we assume that there is enough space after the last load command to insert
3205 one more. Since the first section written out is page aligned, and the
3206 number of load commands is small, this is ok for the present. */
3210 load_union_t *load_map;
3213 if (cmd_strings == -1)
3214 fatal ("no cmd_strings found");
3216 /* Add __main to initializer list.
3217 If we are building a program instead of a shared library, do not
3218 do anything, since in the current version, you cannot do mallocs
3219 and such in the constructors. */
3221 if (main_sym != (symbol_info_t *) 0
3222 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3223 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3226 fprintf (stderr, "\nUpdating header and load commands.\n\n");
3228 hdr.moh_n_load_cmds++;
3229 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3231 /* Create new load command map. */
3233 fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
3234 (int)hdr.moh_n_load_cmds, (long)size);
3236 load_map = (load_union_t *) xcalloc (1, size);
3237 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3238 load_map->map.ldc_header.ldci_cmd_size = size;
3239 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3240 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3241 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3243 offset = hdr.moh_first_cmd_off;
3244 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3246 load_map->map.lcm_map[i] = offset;
3247 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3248 hdr.moh_load_map_cmd_off = offset;
3250 offset += load_array[i].load->hdr.ldci_cmd_size;
3253 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3256 print_header (&hdr);
3259 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3260 if (status != MO_HDR_CONV_SUCCESS)
3261 bad_header (status);
3264 fprintf (stderr, "writing load commands.\n\n");
3266 /* Write load commands */
3267 offset = hdr.moh_first_cmd_off;
3268 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3270 load_union_t *load_hdr = load_array[i].load;
3271 size_t size = load_hdr->hdr.ldci_cmd_size;
3274 print_load_command (load_hdr, offset, i);
3276 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3281 end_file (obj_file);
3283 if (close (prog_fd))
3284 fatal_perror ("closing %s", prog_name);
3287 fprintf (stderr, "\n");
3291 /* Add a function table to the load commands to call a function
3292 on initiation or termination of the process. */
3295 add_func_table (hdr_p, load_array, sym, type)
3296 mo_header_t *hdr_p; /* pointer to global header */
3297 load_all_t *load_array; /* array of ptrs to load cmds */
3298 symbol_info_t *sym; /* pointer to symbol entry */
3299 int type; /* fntc_type value */
3301 /* Add a new load command. */
3302 int num_cmds = ++hdr_p->moh_n_load_cmds;
3303 int load_index = num_cmds - 1;
3304 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3305 load_union_t *ptr = xcalloc (1, size);
3306 load_all_t *load_cmd;
3309 /* Set the unresolved address bit in the header to force the loader to be
3310 used, since kernel exec does not call the initialization functions. */
3311 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3313 load_cmd = &load_array[load_index];
3314 load_cmd->load = ptr;
3315 load_cmd->section = (char *) 0;
3317 /* Fill in func table load command. */
3318 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3319 ptr->func.ldc_header.ldci_cmd_size = size;
3320 ptr->func.ldc_header.ldci_section_off = 0;
3321 ptr->func.ldc_header.ldci_section_len = 0;
3322 ptr->func.fntc_type = type;
3323 ptr->func.fntc_nentries = 1;
3325 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3326 /* Is the symbol already expressed as (region, offset)? */
3327 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3329 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3330 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3333 /* If not, figure out which region it's in. */
3336 mo_vm_addr_t addr = sym->si_value.abs_val;
3339 for (i = 0; i < load_index; i++)
3341 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3343 region_command_t *region_ptr = &load_array[i].load->region;
3345 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3346 && addr >= region_ptr->regc_addr.vm_addr
3347 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3349 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3350 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3358 fatal ("could not convert 0x%l.8x into a region", addr);
3363 "%s function, region %d, offset = %ld (0x%.8lx)\n",
3364 (type == FNTC_INITIALIZATION) ? "init" : "term",
3365 (int)ptr->func.fntc_entry_loc[i].adr_lcid,
3366 (long)ptr->func.fntc_entry_loc[i].adr_sctoff,
3367 (long)ptr->func.fntc_entry_loc[i].adr_sctoff);
3372 /* Print the global header for an OSF/rose object. */
3375 print_header (hdr_ptr)
3376 mo_header_t *hdr_ptr;
3378 fprintf (stderr, "\nglobal header:\n");
3379 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3380 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3381 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3382 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3383 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3384 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3385 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3386 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3387 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3388 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3389 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3390 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3391 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3392 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3393 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3395 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3396 fprintf (stderr, ", relocatable");
3398 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3399 fprintf (stderr, ", linkable");
3401 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3402 fprintf (stderr, ", execable");
3404 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3405 fprintf (stderr, ", executable");
3407 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3408 fprintf (stderr, ", unresolved");
3410 fprintf (stderr, "\n\n");
3415 /* Print a short summary of a load command. */
3418 print_load_command (load_hdr, offset, number)
3419 load_union_t *load_hdr;
3423 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3424 char *type_str = (char *) 0;
3428 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3429 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3430 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3431 case LDC_STRINGS: type_str = "STRINGS"; break;
3432 case LDC_REGION: type_str = "REGION"; break;
3433 case LDC_RELOC: type_str = "RELOC"; break;
3434 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3435 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3436 case LDC_ENTRY: type_str = "ENTRY"; break;
3437 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3438 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3442 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3444 (long) load_hdr->hdr.ldci_cmd_size,
3446 (long) load_hdr->hdr.ldci_section_off,
3447 (long) load_hdr->hdr.ldci_section_len);
3449 if (type_str == (char *) 0)
3450 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3452 else if (type != LDC_REGION)
3453 fprintf (stderr, ", ty: %s\n", type_str);
3458 switch (load_hdr->region.regc_usage_type)
3460 case REG_TEXT_T: region = ", .text"; break;
3461 case REG_DATA_T: region = ", .data"; break;
3462 case REG_BSS_T: region = ", .bss"; break;
3463 case REG_GLUE_T: region = ", .glue"; break;
3464 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3465 case REG_RDATA_T: region = ", .rdata"; break;
3466 case REG_SDATA_T: region = ", .sdata"; break;
3467 case REG_SBSS_T: region = ", .sbss"; break;
3471 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3473 (long) load_hdr->region.regc_vm_addr,
3474 (long) load_hdr->region.regc_vm_size,
3482 /* Fatal error when {en,de}code_mach_o_header fails. */
3488 char *msg = (char *) 0;
3492 case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break;
3493 case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break;
3494 case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break;
3495 case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break;
3496 case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break;
3497 case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break;
3500 if (msg == (char *) 0)
3501 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3507 /* Read a file into a memory buffer. */
3509 static struct file_info *
3510 read_file (name, fd, rw)
3511 char *name; /* filename */
3512 int fd; /* file descriptor */
3513 int rw; /* read/write */
3515 struct stat stat_pkt;
3516 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3518 static int page_size;
3521 if (fstat (fd, &stat_pkt) < 0)
3522 fatal_perror ("fstat %s", name);
3525 p->size = stat_pkt.st_size;
3526 p->rounded_size = stat_pkt.st_size;
3532 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3535 page_size = sysconf (_SC_PAGE_SIZE);
3537 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3538 p->start = mmap ((caddr_t) 0,
3539 (rw) ? p->rounded_size : p->size,
3540 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3541 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3545 if (p->start != (char *) 0 && p->start != (char *) -1)
3549 #endif /* USE_MMAP */
3554 fprintf (stderr, "read %s\n", name);
3557 p->start = xmalloc (p->size);
3558 if (lseek (fd, 0L, SEEK_SET) < 0)
3559 fatal_perror ("lseek to 0 on %s", name);
3561 len = read (fd, p->start, p->size);
3563 fatal_perror ("read %s", name);
3566 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3572 /* Do anything necessary to write a file back from memory. */
3576 struct file_info *ptr; /* file information block */
3584 fprintf (stderr, "msync %s\n", ptr->name);
3586 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3587 fatal_perror ("msync %s", ptr->name);
3591 fprintf (stderr, "munmap %s\n", ptr->name);
3593 if (munmap (ptr->start, ptr->size))
3594 fatal_perror ("munmap %s", ptr->name);
3597 #endif /* USE_MMAP */
3604 fprintf (stderr, "write %s\n", ptr->name);
3606 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3607 fatal_perror ("lseek to 0 on %s", ptr->name);
3609 len = write (ptr->fd, ptr->start, ptr->size);
3611 fatal_perror ("write %s", ptr->name);
3613 if (len != ptr->size)
3614 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3623 #endif /* OBJECT_FORMAT_ROSE */