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 "-n"
143 #endif /* OBJECT_FORMAT_NONE */
145 /* Some systems use __main in a way incompatible with its use in gcc, in these
146 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
147 give the same symbol without quotes for an alternative entry point. You
148 must define both, or neither. */
150 #define NAME__MAIN "__main"
151 #define SYMBOL__MAIN __main
154 #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 int extract_init_priority PROTO((char *));
284 static void sort_ids PROTO((struct head *));
285 static void write_list PROTO((FILE *, char *, struct id *));
286 #ifdef COLLECT_EXPORT_LIST
287 static void dump_list PROTO((FILE *, char *, struct id *));
290 static void dump_prefix_list PROTO((FILE *, char *, struct prefix_list *));
292 static void write_list_with_asm PROTO((FILE *, char *, struct id *));
293 static void write_c_file PROTO((FILE *, char *));
294 static void scan_prog_file PROTO((char *, enum pass));
295 #ifdef SCAN_LIBRARIES
296 static void scan_libraries PROTO((char *));
298 #ifdef COLLECT_EXPORT_LIST
299 static int is_in_list PROTO((char *, struct id *));
300 static void write_export_file PROTO((FILE *));
301 static void write_import_file PROTO((FILE *));
302 static char *resolve_lib_name PROTO((char *));
303 static int use_import_list PROTO((char *));
304 static int ignore_library PROTO((char *));
324 while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
327 close (fdtmp[--fdx]);
343 static char buffer[30];
347 if (e > 0 && e < sys_nerr)
348 return sys_errlist[e];
350 sprintf (buffer, "Unknown error %d", e);
355 /* Delete tempfiles and exit function. */
358 collect_exit (status)
361 if (c_file != 0 && c_file[0])
362 maybe_unlink (c_file);
364 if (o_file != 0 && o_file[0])
365 maybe_unlink (o_file);
367 #ifdef COLLECT_EXPORT_LIST
368 if (export_file != 0 && export_file[0])
369 maybe_unlink (export_file);
371 if (import_file != 0 && import_file[0])
372 maybe_unlink (import_file);
375 if (ldout != 0 && ldout[0])
378 maybe_unlink (ldout);
381 if (status != 0 && output_file != 0 && output_file[0])
382 maybe_unlink (output_file);
388 /* Die when sys call fails. */
391 fatal_perror (string, arg1, arg2, arg3)
392 char *string, *arg1, *arg2, *arg3;
396 fprintf (stderr, "collect2: ");
397 fprintf (stderr, string, arg1, arg2, arg3);
398 fprintf (stderr, ": %s\n", my_strerror (e));
399 collect_exit (FATAL_EXIT_CODE);
405 fatal (string, arg1, arg2, arg3)
406 char *string, *arg1, *arg2, *arg3;
408 fprintf (stderr, "collect2: ");
409 fprintf (stderr, string, arg1, arg2, arg3);
410 fprintf (stderr, "\n");
411 collect_exit (FATAL_EXIT_CODE);
414 /* Write error message. */
417 error (string, arg1, arg2, arg3, arg4)
418 char *string, *arg1, *arg2, *arg3, *arg4;
420 fprintf (stderr, "collect2: ");
421 fprintf (stderr, string, arg1, arg2, arg3, arg4);
422 fprintf (stderr, "\n");
425 /* In case obstack is linked in, and abort is defined to fancy_abort,
426 provide a default entry. */
431 fatal ("internal error");
439 if (c_file != 0 && c_file[0])
440 maybe_unlink (c_file);
442 if (o_file != 0 && o_file[0])
443 maybe_unlink (o_file);
445 if (ldout != 0 && ldout[0])
446 maybe_unlink (ldout);
448 #ifdef COLLECT_EXPORT_LIST
449 if (export_file != 0 && export_file[0])
450 maybe_unlink (export_file);
452 if (import_file != 0 && import_file[0])
453 maybe_unlink (import_file);
456 signal (signo, SIG_DFL);
457 kill (getpid (), signo);
462 xcalloc (size1, size2)
465 char *ptr = (char *) calloc (size1, size2);
469 fatal ("out of memory");
477 char *ptr = (char *) malloc (size);
481 fatal ("out of memory");
490 register char *value = (char *) realloc (ptr, size);
492 fatal ("virtual memory exhausted");
500 return access (name, R_OK) == 0;
503 /* Make a copy of a string INPUT with size SIZE. */
506 savestring (input, size)
510 char *output = (char *) xmalloc (size + 1);
511 bcopy (input, output, size);
516 /* Parse a reasonable subset of shell quoting syntax. */
533 obstack_1grow (&temporary_obstack, c);
534 else if (! inside && c == ' ')
536 else if (! inside && c == '\\')
541 obstack_1grow (&temporary_obstack, c);
544 obstack_1grow (&temporary_obstack, '\0');
546 return obstack_finish (&temporary_obstack);
553 FILE *stream = fopen (name, "r");
554 int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
561 while (c = getc (stream),
562 c != EOF && (ISALNUM (c) || c == '_' || c == '$' || c == '.'))
563 obstack_1grow (&temporary_obstack, c);
564 if (obstack_object_size (&temporary_obstack) > 0)
566 char *word, *p, *result;
567 obstack_1grow (&temporary_obstack, '\0');
568 word = obstack_finish (&temporary_obstack);
571 ++word, putc ('.', stderr);
573 if (*p == '_' && prepends_underscore)
579 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
584 fputs (result, stderr);
586 diff = strlen (word) - strlen (result);
588 --diff, putc (' ', stderr);
589 while (diff < 0 && c == ' ')
590 ++diff, c = getc (stream);
595 fputs (word, stderr);
598 obstack_free (&temporary_obstack, temporary_firstobj);
607 /* Decide whether the given symbol is:
608 a constructor (1), a destructor (2), or neither (0). */
614 struct names { char *name; int len; int ret; int two_underscores; };
616 register struct names *p;
618 register char *orig_s = s;
620 static struct names special[] = {
621 #ifdef NO_DOLLAR_IN_LABEL
622 #ifdef NO_DOT_IN_LABEL
623 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
624 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
625 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
627 { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
628 { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
629 { "GLOBAL_.F.", sizeof ("GLOBAL_.F.")-1, 5, 0 },
632 { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
633 { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
634 { "GLOBAL_$F$", sizeof ("GLOBAL_$F$")-1, 5, 0 },
636 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
637 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
638 #ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
639 cfront has its own linker procedure to collect them;
640 if collect2 gets them too, they get collected twice
641 when the cfront procedure is run and the compiler used
642 for linking happens to be GCC. */
643 { "sti__", sizeof ("sti__")-1, 1, 1 },
644 { "std__", sizeof ("std__")-1, 2, 1 },
645 #endif /* CFRONT_LOSSAGE */
649 while ((ch = *s) == '_')
655 for (p = &special[0]; p->len > 0; p++)
658 && (!p->two_underscores || ((s - orig_s) >= 2))
659 && strncmp(s, p->name, p->len) == 0)
667 /* Routine to add variables to the environment. */
675 #ifndef VMS /* nor about VMS */
677 extern char **environ;
678 char **old_environ = environ;
685 while ((ch = *p++) != '\0' && ch != '=')
691 /* Search for replacing an existing environment variable, and
692 count the number of total environment variables. */
693 for (envp = old_environ; *envp; envp++)
696 if (!strncmp (str, *envp, name_len))
703 /* Add a new environment variable */
704 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
706 bcopy ((char *) old_environ, (char *) (environ + 1),
707 sizeof (char *) * (num_envs+1));
713 #endif /* HAVE_PUTENV */
715 /* By default, colon separates directories in a path. */
716 #ifndef PATH_SEPARATOR
717 #define PATH_SEPARATOR ':'
720 /* We maintain two prefix lists: one from COMPILER_PATH environment variable
721 and one from the PATH variable. */
723 static struct path_prefix cpath, path;
726 /* This is the name of the target machine. We use it to form the name
727 of the files to execute. */
729 static char *target_machine = TARGET_MACHINE;
732 /* Search for NAME using prefix list PPREFIX. We only look for executable
735 Return 0 if not found, otherwise return its name, allocated with malloc. */
738 find_a_file (pprefix, name)
739 struct path_prefix *pprefix;
743 struct prefix_list *pl;
744 int len = pprefix->max_len + strlen (name) + 1;
747 fprintf (stderr, "Looking for '%s'\n", name);
749 #ifdef EXECUTABLE_SUFFIX
750 len += strlen (EXECUTABLE_SUFFIX);
753 temp = xmalloc (len);
755 /* Determine the filename to execute (special case for absolute paths). */
759 || (DIR_SEPARATOR == '\\' && name[1] == ':'
760 && (name[2] == DIR_SEPARATOR || name[2] == '/'))
764 if (access (name, X_OK) == 0)
769 fprintf (stderr, " - found: absolute path\n");
775 fprintf (stderr, " - failed to locate using absolute path\n");
778 for (pl = pprefix->plist; pl; pl = pl->next)
780 strcpy (temp, pl->prefix);
783 if (access (temp, X_OK) == 0)
786 #ifdef EXECUTABLE_SUFFIX
787 /* Some systems have a suffix for executable files.
788 So try appending that. */
789 strcat (temp, EXECUTABLE_SUFFIX);
791 if (access (temp, X_OK) == 0)
796 if (debug && pprefix->plist == NULL)
797 fprintf (stderr, " - failed: no entries in prefix list\n");
803 /* Add an entry for PREFIX to prefix list PPREFIX. */
806 add_prefix (pprefix, prefix)
807 struct path_prefix *pprefix;
810 struct prefix_list *pl, **prev;
815 for (pl = pprefix->plist; pl->next; pl = pl->next)
820 prev = &pprefix->plist;
822 /* Keep track of the longest prefix */
824 len = strlen (prefix);
825 if (len > pprefix->max_len)
826 pprefix->max_len = len;
828 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
829 pl->prefix = savestring (prefix, len);
834 pl->next = (struct prefix_list *) 0;
838 /* Take the value of the environment variable ENV, break it into a path, and
839 add of the entries to PPREFIX. */
842 prefix_from_env (env, pprefix)
844 struct path_prefix *pprefix;
847 GET_ENVIRONMENT (p, env);
850 prefix_from_string (p, pprefix);
854 prefix_from_string (p, pprefix)
856 struct path_prefix *pprefix;
859 char *nstore = (char *) xmalloc (strlen (p) + 3);
862 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
867 if (*endp == PATH_SEPARATOR || *endp == 0)
869 strncpy (nstore, startp, endp-startp);
872 strcpy (nstore, "./");
874 else if (endp[-1] != '/')
876 nstore[endp-startp] = '/';
877 nstore[endp-startp+1] = 0;
880 nstore[endp-startp] = 0;
883 fprintf (stderr, " - add prefix: %s\n", nstore);
885 add_prefix (pprefix, nstore);
888 endp = startp = endp + 1;
902 char *ld_suffix = "ld";
903 char *full_ld_suffix = ld_suffix;
904 char *real_ld_suffix = "real-ld";
905 char *collect_ld_suffix = "collect-ld";
906 char *nm_suffix = "nm";
907 char *full_nm_suffix = nm_suffix;
908 char *gnm_suffix = "gnm";
909 char *full_gnm_suffix = gnm_suffix;
911 char *ldd_suffix = LDD_SUFFIX;
912 char *full_ldd_suffix = ldd_suffix;
914 char *strip_suffix = "strip";
915 char *full_strip_suffix = strip_suffix;
916 char *gstrip_suffix = "gstrip";
917 char *full_gstrip_suffix = gstrip_suffix;
920 #ifdef COLLECT_EXPORT_LIST
928 char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+3);
929 char **ld1 = ld1_argv;
930 char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+6);
931 char **ld2 = ld2_argv;
932 char **object_lst = (char **) xcalloc (sizeof (char *), argc);
933 char **object = object_lst;
935 int num_c_args = argc+9;
941 /* Parse command line early for instances of -debug. This allows
942 the debug flag to be set before functions like find_a_file()
947 for (i = 1; argv[i] != NULL; i ++)
948 if (! strcmp (argv[i], "-debug"))
953 #ifndef DEFAULT_A_OUT_NAME
954 output_file = "a.out";
956 output_file = DEFAULT_A_OUT_NAME;
959 obstack_begin (&temporary_obstack, 0);
960 obstack_begin (&permanent_obstack, 0);
961 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
963 current_demangling_style = gnu_demangling;
964 p = getenv ("COLLECT_GCC_OPTIONS");
967 char *q = extract_string (&p);
968 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
971 obstack_free (&temporary_obstack, temporary_firstobj);
974 c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
977 fatal ("no arguments");
980 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
981 signal (SIGQUIT, handler);
983 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
984 signal (SIGINT, handler);
986 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
987 signal (SIGALRM, handler);
990 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
991 signal (SIGHUP, handler);
993 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
994 signal (SIGSEGV, handler);
996 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
997 signal (SIGBUS, handler);
1000 /* Extract COMPILER_PATH and PATH into our prefix list. */
1001 prefix_from_env ("COMPILER_PATH", &cpath);
1002 prefix_from_env ("PATH", &path);
1004 #ifdef CROSS_COMPILE
1005 /* If we look for a program in the compiler directories, we just use
1006 the short name, since these directories are already system-specific.
1007 But it we look for a program in the system directories, we need to
1008 qualify the program name with the target machine. */
1011 = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
1012 strcpy (full_ld_suffix, target_machine);
1013 strcat (full_ld_suffix, "-");
1014 strcat (full_ld_suffix, ld_suffix);
1018 = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
1019 strcpy (full_gld_suffix, target_machine);
1020 strcat (full_gld_suffix, "-");
1021 strcat (full_gld_suffix, gld_suffix);
1025 = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
1026 strcpy (full_nm_suffix, target_machine);
1027 strcat (full_nm_suffix, "-");
1028 strcat (full_nm_suffix, nm_suffix);
1031 = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
1032 strcpy (full_gnm_suffix, target_machine);
1033 strcat (full_gnm_suffix, "-");
1034 strcat (full_gnm_suffix, gnm_suffix);
1038 = xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1);
1039 strcpy (full_ldd_suffix, target_machine);
1040 strcat (full_ldd_suffix, "-");
1041 strcat (full_ldd_suffix, ldd_suffix);
1045 = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
1046 strcpy (full_strip_suffix, target_machine);
1047 strcat (full_strip_suffix, "-");
1048 strcat (full_strip_suffix, strip_suffix);
1051 = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
1052 strcpy (full_gstrip_suffix, target_machine);
1053 strcat (full_gstrip_suffix, "-");
1054 strcat (full_gstrip_suffix, gstrip_suffix);
1055 #endif /* CROSS_COMPILE */
1057 /* Try to discover a valid linker/nm/strip to use. */
1059 /* Maybe we know the right file to use (if not cross). */
1060 #ifdef REAL_LD_FILE_NAME
1061 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
1062 if (ld_file_name == 0)
1064 /* Search the (target-specific) compiler dirs for ld'. */
1065 ld_file_name = find_a_file (&cpath, real_ld_suffix);
1066 /* Likewise for `collect-ld'. */
1067 if (ld_file_name == 0)
1068 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
1069 /* Search the compiler directories for `ld'. We have protection against
1070 recursive calls in find_a_file. */
1071 if (ld_file_name == 0)
1072 ld_file_name = find_a_file (&cpath, ld_suffix);
1073 /* Search the ordinary system bin directories
1074 for `ld' (if native linking) or `TARGET-ld' (if cross). */
1075 if (ld_file_name == 0)
1076 ld_file_name = find_a_file (&path, full_ld_suffix);
1078 #ifdef REAL_NM_FILE_NAME
1079 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
1080 if (nm_file_name == 0)
1082 nm_file_name = find_a_file (&cpath, gnm_suffix);
1083 if (nm_file_name == 0)
1084 nm_file_name = find_a_file (&path, full_gnm_suffix);
1085 if (nm_file_name == 0)
1086 nm_file_name = find_a_file (&cpath, nm_suffix);
1087 if (nm_file_name == 0)
1088 nm_file_name = find_a_file (&path, full_nm_suffix);
1091 ldd_file_name = find_a_file (&cpath, ldd_suffix);
1092 if (ldd_file_name == 0)
1093 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1096 #ifdef REAL_STRIP_FILE_NAME
1097 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1098 if (strip_file_name == 0)
1100 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1101 if (strip_file_name == 0)
1102 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1103 if (strip_file_name == 0)
1104 strip_file_name = find_a_file (&cpath, strip_suffix);
1105 if (strip_file_name == 0)
1106 strip_file_name = find_a_file (&path, full_strip_suffix);
1108 /* Determine the full path name of the C compiler to use. */
1109 c_file_name = getenv ("COLLECT_GCC");
1110 if (c_file_name == 0)
1112 #ifdef CROSS_COMPILE
1113 c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
1114 strcpy (c_file_name, target_machine);
1115 strcat (c_file_name, "-gcc");
1117 c_file_name = "gcc";
1121 p = find_a_file (&cpath, c_file_name);
1123 /* Here it should be safe to use the system search path since we should have
1124 already qualified the name of the compiler when it is needed. */
1126 p = find_a_file (&path, c_file_name);
1131 *ld1++ = *ld2++ = ld_file_name;
1133 /* Make temp file names. */
1134 c_file = make_temp_file (".c");
1135 o_file = make_temp_file (".o");
1136 #ifdef COLLECT_EXPORT_LIST
1137 export_file = make_temp_file (".x");
1138 import_file = make_temp_file (".p");
1140 ldout = make_temp_file (".ld");
1141 *c_ptr++ = c_file_name;
1148 #ifdef COLLECT_EXPORT_LIST
1149 /* Generate a list of directories from LIBPATH. */
1150 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1151 /* Add to this list also two standard directories where
1152 AIX loader always searches for libraries. */
1153 add_prefix (&libpath_lib_dirs, "/lib");
1154 add_prefix (&libpath_lib_dirs, "/usr/lib");
1157 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1159 AIX support needs to know if -shared has been specified before
1160 parsing commandline arguments. */
1162 p = getenv ("COLLECT_GCC_OPTIONS");
1165 char *q = extract_string (&p);
1166 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1167 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1168 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1171 obstack_free (&temporary_obstack, temporary_firstobj);
1172 *c_ptr++ = "-fno-exceptions";
1174 /* !!! When GCC calls collect2,
1175 it does not know whether it is calling collect2 or ld.
1176 So collect2 cannot meaningfully understand any options
1177 except those ld understands.
1178 If you propose to make GCC pass some other option,
1179 just imagine what will happen if ld is really ld!!! */
1181 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1182 /* After the first file, put in the c++ rt0. */
1185 while ((arg = *++argv) != (char *) 0)
1187 *ld1++ = *ld2++ = arg;
1193 #ifdef COLLECT_EXPORT_LIST
1194 /* We want to disable automatic exports on AIX when user
1195 explicitly puts an export list in command line */
1197 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1203 if (!strcmp (arg, "-debug"))
1205 /* Already parsed. */
1214 /* place o_file BEFORE this argument! */
1220 #ifdef COLLECT_EXPORT_LIST
1222 /* Resolving full library name. */
1223 char *s = resolve_lib_name (arg+2);
1225 /* If we will use an import list for this library,
1226 we should exclude it from ld args. */
1227 if (use_import_list (s))
1233 /* Saving a full library name. */
1234 add_to_list (&libs, s);
1239 #ifdef COLLECT_EXPORT_LIST
1240 /* Saving directories where to search for libraries. */
1242 add_prefix (&cmdline_lib_dirs, arg+2);
1248 output_file = *ld1++ = *ld2++ = *++argv;
1250 output_file = &arg[2];
1259 if (arg[2] == '\0' && do_collecting)
1261 /* We must strip after the nm run, otherwise C++ linking
1262 will not work. Thus we strip in the second ld run, or
1263 else with strip if there is no second ld run. */
1275 else if ((p = rindex (arg, '.')) != (char *) 0
1276 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1277 || strcmp (p, ".so") == 0))
1286 /* place o_file BEFORE this argument! */
1294 #ifdef COLLECT_EXPORT_LIST
1295 /* libraries can be specified directly, i.e. without -l flag. */
1298 /* If we will use an import list for this library,
1299 we should exclude it from ld args. */
1300 if (use_import_list (arg))
1306 /* Saving a full library name. */
1307 add_to_list (&libs, arg);
1313 #ifdef COLLECT_EXPORT_LIST
1314 /* This is added only for debugging purposes. */
1317 fprintf (stderr, "List of libraries:\n");
1318 dump_list (stderr, "\t", libs.first);
1321 /* The AIX linker will discard static constructors in object files if
1322 nothing else in the file is referenced, so look at them first. */
1324 char **export_object_lst = object_lst;
1325 while (export_object_lst < object)
1326 scan_prog_file (*export_object_lst++, PASS_OBJ);
1329 struct id *list = libs.first;
1330 for (; list; list = list->next)
1331 scan_prog_file (list->name, PASS_FIRST);
1334 char *buf1 = alloca (strlen (export_file) + 5);
1335 char *buf2 = alloca (strlen (import_file) + 5);
1336 sprintf (buf1, "-bE:%s", export_file);
1337 sprintf (buf2, "-bI:%s", import_file);
1342 exportf = fopen (export_file, "w");
1343 if (exportf == (FILE *) 0)
1344 fatal_perror ("%s", export_file);
1345 write_export_file (exportf);
1346 if (fclose (exportf))
1347 fatal_perror ("closing %s", export_file);
1348 importf = fopen (import_file, "w");
1349 if (importf == (FILE *) 0)
1350 fatal_perror ("%s", import_file);
1351 write_import_file (importf);
1352 if (fclose (importf))
1353 fatal_perror ("closing %s", import_file);
1358 *object = *c_ptr = *ld1 = (char *) 0;
1362 fprintf (stderr, "collect2 version %s", version_string);
1363 #ifdef TARGET_VERSION
1366 fprintf (stderr, "\n");
1372 fprintf (stderr, "ld_file_name = %s\n",
1373 (ld_file_name ? ld_file_name : "not found"));
1374 fprintf (stderr, "c_file_name = %s\n",
1375 (c_file_name ? c_file_name : "not found"));
1376 fprintf (stderr, "nm_file_name = %s\n",
1377 (nm_file_name ? nm_file_name : "not found"));
1379 fprintf (stderr, "ldd_file_name = %s\n",
1380 (ldd_file_name ? ldd_file_name : "not found"));
1382 fprintf (stderr, "strip_file_name = %s\n",
1383 (strip_file_name ? strip_file_name : "not found"));
1384 fprintf (stderr, "c_file = %s\n",
1385 (c_file ? c_file : "not found"));
1386 fprintf (stderr, "o_file = %s\n",
1387 (o_file ? o_file : "not found"));
1389 ptr = getenv ("COLLECT_GCC_OPTIONS");
1391 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1393 ptr = getenv ("COLLECT_GCC");
1395 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1397 ptr = getenv ("COMPILER_PATH");
1399 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1401 ptr = getenv ("LIBRARY_PATH");
1403 fprintf (stderr, "LIBRARY_PATH = %s\n", ptr);
1405 fprintf (stderr, "\n");
1408 /* Load the program, searching all libraries and attempting to provide
1409 undefined symbols from repository information. */
1411 /* On AIX we do this later. */
1412 #ifndef COLLECT_EXPORT_LIST
1413 do_tlink (ld1_argv, object_lst);
1416 /* If -r or they will be run via some other method, do not build the
1417 constructor or destructor list, just return now. */
1419 #ifndef COLLECT_EXPORT_LIST
1424 #ifdef COLLECT_EXPORT_LIST
1425 /* But make sure we delete the export file we may have created. */
1426 if (export_file != 0 && export_file[0])
1427 maybe_unlink (export_file);
1428 if (import_file != 0 && import_file[0])
1429 maybe_unlink (import_file);
1431 maybe_unlink (c_file);
1432 maybe_unlink (o_file);
1436 /* Examine the namelist with nm and search it for static constructors
1437 and destructors to call.
1438 Write the constructor and destructor tables to a .s file and reload. */
1440 /* On AIX we already done scanning for global constructors/destructors. */
1441 #ifndef COLLECT_EXPORT_LIST
1442 scan_prog_file (output_file, PASS_FIRST);
1445 #ifdef SCAN_LIBRARIES
1446 scan_libraries (output_file);
1451 fprintf (stderr, "%d constructor(s) found\n", constructors.number);
1452 fprintf (stderr, "%d destructor(s) found\n", destructors.number);
1455 if (constructors.number == 0 && destructors.number == 0
1456 && frame_tables.number == 0
1457 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1458 /* If we will be running these functions ourselves, we want to emit
1459 stubs into the shared library so that we do not have to relink
1460 dependent programs when we add static objects. */
1465 #ifdef COLLECT_EXPORT_LIST
1466 /* Doing tlink without additional code generation */
1467 do_tlink (ld1_argv, object_lst);
1469 /* Strip now if it was requested on the command line. */
1472 char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
1473 strip_argv[0] = strip_file_name;
1474 strip_argv[1] = output_file;
1475 strip_argv[2] = (char *) 0;
1476 fork_execute ("strip", strip_argv);
1479 #ifdef COLLECT_EXPORT_LIST
1480 maybe_unlink (export_file);
1481 maybe_unlink (import_file);
1483 maybe_unlink (c_file);
1484 maybe_unlink (o_file);
1488 /* Sort ctor and dtor lists by priority. */
1489 sort_ids (&constructors);
1490 sort_ids (&destructors);
1492 maybe_unlink(output_file);
1493 outf = fopen (c_file, "w");
1494 if (outf == (FILE *) 0)
1495 fatal_perror ("%s", c_file);
1497 write_c_file (outf, c_file);
1500 fatal_perror ("closing %s", c_file);
1502 /* Tell the linker that we have initializer and finalizer functions. */
1503 #ifdef LD_INIT_SWITCH
1504 *ld2++ = LD_INIT_SWITCH;
1506 *ld2++ = LD_FINI_SWITCH;
1511 #ifdef COLLECT_EXPORT_LIST
1514 add_to_list (&exports, initname);
1515 add_to_list (&exports, fininame);
1516 add_to_list (&exports, "_GLOBAL__DI");
1517 add_to_list (&exports, "_GLOBAL__DD");
1518 exportf = fopen (export_file, "w");
1519 if (exportf == (FILE *) 0)
1520 fatal_perror ("%s", export_file);
1521 write_export_file (exportf);
1522 if (fclose (exportf))
1523 fatal_perror ("closing %s", export_file);
1529 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1530 output_file, c_file);
1531 write_c_file (stderr, "stderr");
1532 fprintf (stderr, "========== end of c_file\n\n");
1533 #ifdef COLLECT_EXPORT_LIST
1534 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1535 write_export_file (stderr);
1536 fprintf (stderr, "========== end of export_file\n\n");
1540 /* Assemble the constructor and destructor tables.
1541 Link the tables in with the rest of the program. */
1543 fork_execute ("gcc", c_argv);
1544 #ifdef COLLECT_EXPORT_LIST
1545 /* On AIX we must call tlink because of possible templates resolution */
1546 do_tlink (ld2_argv, object_lst);
1548 /* Otherwise, simply call ld because tlink is already done */
1549 fork_execute ("ld", ld2_argv);
1551 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1552 constructors/destructors in shared libraries. */
1553 scan_prog_file (output_file, PASS_SECOND);
1556 maybe_unlink (c_file);
1557 maybe_unlink (o_file);
1559 #ifdef COLLECT_EXPORT_LIST
1560 maybe_unlink (export_file);
1561 maybe_unlink (import_file);
1568 /* Wait for a process to finish, and exit if a non-zero status is found. */
1579 if (WIFSIGNALED (status))
1581 int sig = WTERMSIG (status);
1582 #ifdef NO_SYS_SIGLIST
1583 error ("%s terminated with signal %d %s",
1586 (status & 0200) ? ", core dumped" : "");
1588 error ("%s terminated with signal %d [%s]%s",
1592 (status & 0200) ? ", core dumped" : "");
1595 collect_exit (FATAL_EXIT_CODE);
1598 if (WIFEXITED (status))
1599 return WEXITSTATUS (status);
1608 int ret = collect_wait (prog);
1611 error ("%s returned %d exit status", prog, ret);
1617 /* Fork and execute a program, and wait for the reply. */
1620 collect_execute (prog, argv, redir)
1633 fprintf (stderr, "%s", argv[0]);
1635 fprintf (stderr, "[cannot find %s]", prog);
1637 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1638 fprintf (stderr, " %s", str);
1640 fprintf (stderr, "\n");
1646 /* If we cannot find a program we need, complain error. Do this here
1647 since we might not end up needing something that we could not find. */
1650 fatal ("cannot find `%s'", prog);
1652 #ifndef __CYGWIN32__
1657 fatal_perror ("fork");
1659 fatal_perror ("vfork");
1663 if (pid == 0) /* child context */
1668 if (freopen (redir, "a", stdout) == NULL)
1669 fatal_perror ("redirecting stdout: %s", redir);
1670 if (freopen (redir, "a", stderr) == NULL)
1671 fatal_perror ("redirecting stderr: %s", redir);
1674 execvp (argv[0], argv);
1675 fatal_perror ("executing %s", prog);
1678 pid = _spawnvp (_P_NOWAIT, argv[0], argv);
1680 fatal ("spawnvp failed");
1685 fork_execute (prog, argv)
1689 collect_execute (prog, argv, NULL);
1693 /* Unlink a file unless we are debugging. */
1702 fprintf (stderr, "[Leaving %s]\n", file);
1706 static long sequence_number = 0;
1708 /* Add a name to a linked list. */
1711 add_to_list (head_ptr, name)
1712 struct head *head_ptr;
1716 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1718 strcpy (newid->name, name);
1720 if (head_ptr->first)
1721 head_ptr->last->next = newid;
1723 head_ptr->first = newid;
1725 /* Check for duplicate symbols. */
1726 for (p = head_ptr->first;
1727 strcmp (name, p->name) != 0;
1732 head_ptr->last->next = 0;
1737 newid->sequence = ++sequence_number;
1738 head_ptr->last = newid;
1742 /* Grab the init priority number from an init function name that
1743 looks like "_GLOBAL_.I.12345.foo". */
1746 extract_init_priority (name)
1751 while (name[pos] == '_')
1753 pos += 10; /* strlen ("GLOBAL__X_") */
1755 /* Extract init_p number from ctor/dtor name. */
1756 return strtoul(name + pos, NULL, 10);
1759 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
1760 ctors will be run from right to left, dtors from left to right. */
1764 struct head *head_ptr;
1766 /* id holds the current element to insert. id_next holds the next
1767 element to insert. id_ptr iterates through the already sorted elements
1768 looking for the place to insert id. */
1769 struct id *id, *id_next, **id_ptr;
1772 id = head_ptr->first;
1774 /* We don't have any sorted elements yet. */
1775 head_ptr->first = NULL;
1777 for (; id; id = id_next)
1780 id->sequence = extract_init_priority (id->name);
1782 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
1784 /* If the sequence numbers are the same, we put the id from the
1785 file later on the command line later in the list. */
1786 || id->sequence > (*id_ptr)->sequence
1787 /* Hack: do lexical compare, too.
1788 || (id->sequence == (*id_ptr)->sequence
1789 && strcmp (id->name, (*id_ptr)->name) > 0) */
1798 /* Now set the sequence numbers properly so write_c_file works. */
1799 for (id = head_ptr->first; id; id = id->next)
1800 id->sequence = ++sequence_number;
1803 /* Write: `prefix', the names on list LIST, `suffix'. */
1806 write_list (stream, prefix, list)
1813 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1818 #ifdef COLLECT_EXPORT_LIST
1819 /* This function is really used only on AIX, but may be useful. */
1821 is_in_list (prefix, list)
1827 if (!strcmp (prefix, list->name)) return 1;
1834 /* Added for debugging purpose. */
1835 #ifdef COLLECT_EXPORT_LIST
1837 dump_list (stream, prefix, list)
1844 fprintf (stream, "%s%s,\n", prefix, list->name);
1852 dump_prefix_list (stream, prefix, list)
1855 struct prefix_list *list;
1859 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1866 write_list_with_asm (stream, prefix, list)
1873 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1874 prefix, list->sequence, list->name);
1879 /* Write out the constructor and destructor tables statically (for a shared
1880 object), along with the functions to execute them. */
1883 write_c_file_stat (stream, name)
1887 char *prefix, *p, *q;
1888 int frames = (frame_tables.number > 0);
1890 /* Figure out name of output_file, stripping off .so version. */
1891 p = rindex (output_file, '/');
1893 p = (char *) output_file;
1907 if (strncmp (q, ".so", 3) == 0)
1916 /* q points to null at end of the string (or . of the .so version) */
1917 prefix = xmalloc (q - p + 1);
1918 strncpy (prefix, p, q - p);
1920 for (q = prefix; *q; q++)
1924 fprintf (stderr, "\nwrite_c_file - output name is %s, prefix is %s\n",
1925 output_file, prefix);
1927 #define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
1928 initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
1929 sprintf (initname, INIT_NAME_FORMAT, prefix);
1931 #define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
1932 fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
1933 sprintf (fininame, FINI_NAME_FORMAT, prefix);
1937 /* Write the tables as C code */
1939 fprintf (stream, "static int count;\n");
1940 fprintf (stream, "typedef void entry_pt();\n");
1941 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
1945 write_list_with_asm (stream, "extern void *", frame_tables.first);
1947 fprintf (stream, "\tstatic void *frame_table[] = {\n");
1948 write_list (stream, "\t\t&", frame_tables.first);
1949 fprintf (stream, "\t0\n};\n");
1951 /* This must match what's in frame.h. */
1952 fprintf (stream, "struct object {\n");
1953 fprintf (stream, " void *pc_begin;\n");
1954 fprintf (stream, " void *pc_end;\n");
1955 fprintf (stream, " void *fde_begin;\n");
1956 fprintf (stream, " void *fde_array;\n");
1957 fprintf (stream, " __SIZE_TYPE__ count;\n");
1958 fprintf (stream, " struct object *next;\n");
1959 fprintf (stream, "};\n");
1961 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
1962 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
1964 fprintf (stream, "static void reg_frame () {\n");
1965 fprintf (stream, "\tstatic struct object ob;\n");
1966 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
1967 fprintf (stream, "\t}\n");
1969 fprintf (stream, "static void dereg_frame () {\n");
1970 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
1971 fprintf (stream, "\t}\n");
1974 fprintf (stream, "void %s() {\n", initname);
1975 if (constructors.number > 0 || frames)
1977 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
1978 write_list (stream, "\t\t", constructors.first);
1980 fprintf (stream, "\treg_frame,\n");
1981 fprintf (stream, "\t};\n");
1982 fprintf (stream, "\tentry_pt **p;\n");
1983 fprintf (stream, "\tif (count++ != 0) return;\n");
1984 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
1985 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
1988 fprintf (stream, "\t++count;\n");
1989 fprintf (stream, "}\n");
1990 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
1991 fprintf (stream, "void %s() {\n", fininame);
1992 if (destructors.number > 0 || frames)
1994 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
1995 write_list (stream, "\t\t", destructors.first);
1997 fprintf (stream, "\tdereg_frame,\n");
1998 fprintf (stream, "\t};\n");
1999 fprintf (stream, "\tentry_pt **p;\n");
2000 fprintf (stream, "\tif (--count != 0) return;\n");
2001 fprintf (stream, "\tp = dtors;\n");
2002 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
2003 destructors.number + frames);
2005 fprintf (stream, "}\n");
2009 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
2010 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
2014 /* Write the constructor/destructor tables. */
2016 #ifndef LD_INIT_SWITCH
2018 write_c_file_glob (stream, name)
2022 /* Write the tables as C code */
2024 int frames = (frame_tables.number > 0);
2026 fprintf (stream, "typedef void entry_pt();\n\n");
2028 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
2032 write_list_with_asm (stream, "extern void *", frame_tables.first);
2034 fprintf (stream, "\tstatic void *frame_table[] = {\n");
2035 write_list (stream, "\t\t&", frame_tables.first);
2036 fprintf (stream, "\t0\n};\n");
2038 /* This must match what's in frame.h. */
2039 fprintf (stream, "struct object {\n");
2040 fprintf (stream, " void *pc_begin;\n");
2041 fprintf (stream, " void *pc_end;\n");
2042 fprintf (stream, " void *fde_begin;\n");
2043 fprintf (stream, " void *fde_array;\n");
2044 fprintf (stream, " __SIZE_TYPE__ count;\n");
2045 fprintf (stream, " struct object *next;\n");
2046 fprintf (stream, "};\n");
2048 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
2049 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
2051 fprintf (stream, "static void reg_frame () {\n");
2052 fprintf (stream, "\tstatic struct object ob;\n");
2053 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
2054 fprintf (stream, "\t}\n");
2056 fprintf (stream, "static void dereg_frame () {\n");
2057 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
2058 fprintf (stream, "\t}\n");
2061 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
2062 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
2063 write_list (stream, "\t", constructors.first);
2065 fprintf (stream, "\treg_frame,\n");
2066 fprintf (stream, "\t0\n};\n\n");
2068 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2070 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2071 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2072 write_list (stream, "\t", destructors.first);
2074 fprintf (stream, "\tdereg_frame,\n");
2075 fprintf (stream, "\t0\n};\n\n");
2077 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2078 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2080 #endif /* ! LD_INIT_SWITCH */
2083 write_c_file (stream, name)
2087 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2088 #ifndef LD_INIT_SWITCH
2090 write_c_file_glob (stream, name);
2093 write_c_file_stat (stream, name);
2094 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2097 #ifdef COLLECT_EXPORT_LIST
2099 write_export_file (stream)
2102 struct id *list = exports.first;
2103 for (; list; list = list->next)
2104 fprintf (stream, "%s\n", list->name);
2108 write_import_file (stream)
2111 struct id *list = imports.first;
2112 fprintf (stream, "%s\n", "#! .");
2113 for (; list; list = list->next)
2114 fprintf (stream, "%s\n", list->name);
2118 #ifdef OBJECT_FORMAT_NONE
2120 /* Generic version to scan the name list of the loaded program for
2121 the symbols g++ uses for static constructors and destructors.
2123 The constructor table begins at __CTOR_LIST__ and contains a count
2124 of the number of pointers (or -1 if the constructors are built in a
2125 separate section by the linker), followed by the pointers to the
2126 constructor functions, terminated with a null pointer. The
2127 destructor table has the same format, and begins at __DTOR_LIST__. */
2130 scan_prog_file (prog_name, which_pass)
2132 enum pass which_pass;
2134 void (*int_handler) ();
2135 void (*quit_handler) ();
2143 if (which_pass == PASS_SECOND)
2146 /* If we do not have an `nm', complain. */
2147 if (nm_file_name == 0)
2148 fatal ("cannot find `nm'");
2150 nm_argv[argc++] = nm_file_name;
2151 if (NM_FLAGS[0] != '\0')
2152 nm_argv[argc++] = NM_FLAGS;
2154 nm_argv[argc++] = prog_name;
2155 nm_argv[argc++] = (char *) 0;
2157 if (pipe (pipe_fd) < 0)
2158 fatal_perror ("pipe");
2160 inf = fdopen (pipe_fd[0], "r");
2161 if (inf == (FILE *) 0)
2162 fatal_perror ("fdopen");
2164 /* Trace if needed. */
2170 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2171 fprintf (stderr, " %s", str);
2173 fprintf (stderr, "\n");
2179 /* Spawn child nm on pipe */
2184 fatal_perror ("fork");
2186 fatal_perror ("vfork");
2190 if (pid == 0) /* child context */
2193 if (dup2 (pipe_fd[1], 1) < 0)
2194 fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
2196 if (close (pipe_fd[0]) < 0)
2197 fatal_perror ("close (%d)", pipe_fd[0]);
2199 if (close (pipe_fd[1]) < 0)
2200 fatal_perror ("close (%d)", pipe_fd[1]);
2202 execv (nm_file_name, nm_argv);
2203 fatal_perror ("executing %s", nm_file_name);
2206 /* Parent context from here on. */
2207 int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
2209 quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
2212 if (close (pipe_fd[1]) < 0)
2213 fatal_perror ("close (%d)", pipe_fd[1]);
2216 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2218 /* Read each line of nm output. */
2219 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2224 /* If it contains a constructor or destructor name, add the name
2225 to the appropriate list. */
2227 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2228 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2235 /* Find the end of the symbol name.
2236 Do not include `|', because Encore nm can tack that on the end. */
2237 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2243 switch (is_ctor_dtor (name))
2246 if (which_pass != PASS_LIB)
2247 add_to_list (&constructors, name);
2251 if (which_pass != PASS_LIB)
2252 add_to_list (&destructors, name);
2256 if (which_pass != PASS_LIB)
2257 fatal ("init function found in object %s", prog_name);
2258 #ifndef LD_INIT_SWITCH
2259 add_to_list (&constructors, name);
2264 if (which_pass != PASS_LIB)
2265 fatal ("fini function found in object %s", prog_name);
2266 #ifndef LD_FINI_SWITCH
2267 add_to_list (&destructors, name);
2272 if (which_pass != PASS_LIB)
2273 add_to_list (&frame_tables, name);
2275 default: /* not a constructor or destructor */
2280 fprintf (stderr, "\t%s\n", buf);
2284 fprintf (stderr, "\n");
2286 if (fclose (inf) != 0)
2287 fatal_perror ("fclose of pipe");
2289 do_wait (nm_file_name);
2291 signal (SIGINT, int_handler);
2293 signal (SIGQUIT, quit_handler);
2297 #if SUNOS4_SHARED_LIBRARIES
2299 /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2300 that the output file depends upon and their initialization/finalization
2301 routines, if any. */
2306 #include <sys/mman.h>
2307 #include <sys/param.h>
2309 #include <sys/dir.h>
2311 /* pointers to the object file */
2312 unsigned object; /* address of memory mapped file */
2313 unsigned objsize; /* size of memory mapped to file */
2314 char * code; /* pointer to code segment */
2315 char * data; /* pointer to data segment */
2316 struct nlist *symtab; /* pointer to symbol table */
2317 struct link_dynamic *ld;
2318 struct link_dynamic_2 *ld_2;
2319 struct head libraries;
2321 /* Map the file indicated by NAME into memory and store its address. */
2329 if ((fp = open (name, O_RDONLY)) == -1)
2330 fatal ("unable to open file '%s'", name);
2331 if (fstat (fp, &s) == -1)
2332 fatal ("unable to stat file '%s'", name);
2334 objsize = s.st_size;
2335 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2338 fatal ("unable to mmap file '%s'", name);
2343 /* Helpers for locatelib. */
2345 static char *libname;
2351 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2354 /* If one file has an additional numeric extension past LIBNAME, then put
2355 that one first in the sort. If both files have additional numeric
2356 extensions, then put the one with the higher number first in the sort.
2358 We must verify that the extension is numeric, because Sun saves the
2359 original versions of patched libraries with a .FCS extension. Files with
2360 invalid extensions must go last in the sort, so that they will not be used. */
2364 struct direct **d1, **d2;
2366 int i1, i2 = strlen (libname);
2367 char *e1 = (*d1)->d_name + i2;
2368 char *e2 = (*d2)->d_name + i2;
2370 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2371 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2375 i1 = strtol (e1, &e1, 10);
2376 i2 = strtol (e2, &e2, 10);
2383 /* It has a valid numeric extension, prefer this one. */
2384 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2386 /* It has a invalid numeric extension, must prefer the other one. */
2392 /* It has a valid numeric extension, prefer this one. */
2393 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2395 /* It has a invalid numeric extension, must prefer the other one. */
2403 /* Given the name NAME of a dynamic dependency, find its pathname and add
2404 it to the list of libraries. */
2412 char buf[MAXPATHLEN];
2420 /* counting elements in array, need 1 extra for null */
2422 ld_rules = (char *) (ld_2->ld_rules + code);
2426 for (; *ld_rules != 0; ld_rules++)
2427 if (*ld_rules == ':')
2429 ld_rules = (char *) (ld_2->ld_rules + code);
2430 ldr = (char *) malloc (strlen (ld_rules) + 1);
2431 strcpy (ldr, ld_rules);
2433 p = getenv ("LD_LIBRARY_PATH");
2438 for (q = p ; *q != 0; q++)
2441 q = (char *) malloc (strlen (p) + 1);
2444 l = (char **) malloc ((cnt + 3) * sizeof (char *));
2449 for (; *ldr != 0; ldr++)
2459 for (; *q != 0; q++)
2466 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2469 *pp++ = "/usr/local/lib";
2473 for (pp = l; *pp != 0 ; pp++)
2475 struct direct **namelist;
2477 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2479 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2480 add_to_list (&libraries, buf);
2482 fprintf (stderr, "%s\n", buf);
2489 fprintf (stderr, "not found\n");
2491 fatal ("dynamic dependency %s not found", name);
2495 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2496 that it depends upon and any constructors or destructors they contain. */
2499 scan_libraries (prog_name)
2502 struct exec *header;
2504 struct link_object *lo;
2505 char buff[MAXPATHLEN];
2508 mapfile (prog_name);
2509 header = (struct exec *)object;
2510 if (N_BADMAG (*header))
2511 fatal ("bad magic number in file '%s'", prog_name);
2512 if (header->a_dynamic == 0)
2515 code = (char *) (N_TXTOFF (*header) + (long) header);
2516 data = (char *) (N_DATOFF (*header) + (long) header);
2517 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2519 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2522 ld = (struct link_dynamic *) (symtab->n_value + code);
2528 ld = (struct link_dynamic *) data;
2533 fprintf (stderr, "dynamic dependencies.\n");
2535 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2536 for (lo = (struct link_object *) ld_2->ld_need; lo;
2537 lo = (struct link_object *) lo->lo_next)
2540 lo = (struct link_object *) ((long) lo + code);
2541 name = (char *) (code + lo->lo_name);
2545 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2546 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2552 fprintf (stderr, "\t%s\n", name);
2553 add_to_list (&libraries, name);
2558 fprintf (stderr, "\n");
2560 /* now iterate through the library list adding their symbols to
2562 for (list = libraries.first; list; list = list->next)
2563 scan_prog_file (list->name, PASS_LIB);
2566 #else /* SUNOS4_SHARED_LIBRARIES */
2569 /* Use the List Dynamic Dependencies program to find shared libraries that
2570 the output file depends upon and their initialization/finalization
2571 routines, if any. */
2574 scan_libraries (prog_name)
2577 static struct head libraries; /* list of shared libraries found */
2579 void (*int_handler) ();
2580 void (*quit_handler) ();
2588 /* If we do not have an `ldd', complain. */
2589 if (ldd_file_name == 0)
2591 error ("cannot find `ldd'");
2595 ldd_argv[argc++] = ldd_file_name;
2596 ldd_argv[argc++] = prog_name;
2597 ldd_argv[argc++] = (char *) 0;
2599 if (pipe (pipe_fd) < 0)
2600 fatal_perror ("pipe");
2602 inf = fdopen (pipe_fd[0], "r");
2603 if (inf == (FILE *) 0)
2604 fatal_perror ("fdopen");
2606 /* Trace if needed. */
2612 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2613 fprintf (stderr, " %s", str);
2615 fprintf (stderr, "\n");
2621 /* Spawn child ldd on pipe */
2626 fatal_perror ("fork");
2628 fatal_perror ("vfork");
2632 if (pid == 0) /* child context */
2635 if (dup2 (pipe_fd[1], 1) < 0)
2636 fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
2638 if (close (pipe_fd[0]) < 0)
2639 fatal_perror ("close (%d)", pipe_fd[0]);
2641 if (close (pipe_fd[1]) < 0)
2642 fatal_perror ("close (%d)", pipe_fd[1]);
2644 execv (ldd_file_name, ldd_argv);
2645 fatal_perror ("executing %s", ldd_file_name);
2648 /* Parent context from here on. */
2649 int_handler = (void (*) ()) signal (SIGINT, SIG_IGN);
2651 quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN);
2654 if (close (pipe_fd[1]) < 0)
2655 fatal_perror ("close (%d)", pipe_fd[1]);
2658 fprintf (stderr, "\nldd output with constructors/destructors.\n");
2660 /* Read each line of ldd output. */
2661 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2664 char *name, *end, *p = buf;
2666 /* Extract names of libraries and add to list. */
2667 PARSE_LDD_OUTPUT (p);
2672 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2673 fatal ("dynamic dependency %s not found", buf);
2675 /* Find the end of the symbol name. */
2677 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2682 if (access (name, R_OK) == 0)
2683 add_to_list (&libraries, name);
2685 fatal ("unable to open dynamic dependency '%s'", buf);
2688 fprintf (stderr, "\t%s\n", buf);
2691 fprintf (stderr, "\n");
2693 if (fclose (inf) != 0)
2694 fatal_perror ("fclose of pipe");
2696 do_wait (ldd_file_name);
2698 signal (SIGINT, int_handler);
2700 signal (SIGQUIT, quit_handler);
2703 /* now iterate through the library list adding their symbols to
2705 for (list = libraries.first; list; list = list->next)
2706 scan_prog_file (list->name, PASS_LIB);
2709 #endif /* LDD_SUFFIX */
2710 #endif /* SUNOS4_SHARED_LIBRARIES */
2712 #endif /* OBJECT_FORMAT_NONE */
2716 * COFF specific stuff.
2719 #ifdef OBJECT_FORMAT_COFF
2721 #if defined(EXTENDED_COFF)
2722 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2723 # define GCC_SYMENT SYMR
2724 # define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText)
2725 # define GCC_SYMINC(X) (1)
2726 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2727 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2729 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2730 # define GCC_SYMENT SYMENT
2731 # define GCC_OK_SYMBOL(X) \
2732 (((X).n_sclass == C_EXT) && \
2733 ((X).n_scnum > N_UNDEF) && \
2734 (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \
2735 ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))
2736 # define GCC_UNDEF_SYMBOL(X) \
2737 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
2738 # define GCC_SYMINC(X) ((X).n_numaux+1)
2739 # define GCC_SYMZERO(X) 0
2740 # define GCC_CHECK_HDR(X) (1)
2743 extern char *ldgetname ();
2745 /* COFF version to scan the name list of the loaded program for
2746 the symbols g++ uses for static constructors and destructors.
2748 The constructor table begins at __CTOR_LIST__ and contains a count
2749 of the number of pointers (or -1 if the constructors are built in a
2750 separate section by the linker), followed by the pointers to the
2751 constructor functions, terminated with a null pointer. The
2752 destructor table has the same format, and begins at __DTOR_LIST__. */
2755 scan_prog_file (prog_name, which_pass)
2757 enum pass which_pass;
2759 LDFILE *ldptr = NULL;
2760 int sym_index, sym_count;
2762 #ifdef COLLECT_EXPORT_LIST
2763 /* Should we generate an import list for given prog_name? */
2764 int import_flag = (which_pass == PASS_OBJ ? 0 : use_import_list (prog_name));
2767 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
2770 #ifdef COLLECT_EXPORT_LIST
2771 /* We do not need scanning for some standard C libraries. */
2772 if (which_pass == PASS_FIRST && ignore_library (prog_name))
2775 /* On AIX we have a loop, because there is not much difference
2776 between an object and an archive. This trick allows us to
2777 eliminate scan_libraries() function. */
2781 if ((ldptr = ldopen (prog_name, ldptr)) != NULL)
2784 if (!MY_ISCOFF (HEADER (ldptr).f_magic))
2785 fatal ("%s: not a COFF file", prog_name);
2787 #ifdef COLLECT_EXPORT_LIST
2788 /* Is current archive member a shared object? */
2789 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2791 if (GCC_CHECK_HDR (ldptr))
2793 sym_count = GCC_SYMBOLS (ldptr);
2794 sym_index = GCC_SYMZERO (ldptr);
2795 while (sym_index < sym_count)
2799 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2801 sym_index += GCC_SYMINC (symbol);
2803 if (GCC_OK_SYMBOL (symbol))
2807 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2808 continue; /* should never happen */
2810 #ifdef XCOFF_DEBUGGING_INFO
2811 /* All AIX function names have a duplicate entry
2812 beginning with a dot. */
2817 switch (is_ctor_dtor (name))
2820 if (! is_shared) add_to_list (&constructors, name);
2821 #ifdef COLLECT_EXPORT_LIST
2822 if (which_pass == PASS_OBJ)
2823 add_to_list (&exports, name);
2824 /* If this symbol was undefined and we are building
2825 an import list, we should add a symbol to this
2829 && is_in_list (name, undefined.first))
2830 add_to_list (&imports, name);
2835 if (! is_shared) add_to_list (&destructors, name);
2836 #ifdef COLLECT_EXPORT_LIST
2837 if (which_pass == PASS_OBJ)
2838 add_to_list (&exports, name);
2839 /* If this symbol was undefined and we are building
2840 an import list, we should add a symbol to this
2844 && is_in_list (name, undefined.first))
2845 add_to_list (&imports, name);
2849 #ifdef COLLECT_EXPORT_LIST
2852 add_to_list (&constructors, name);
2857 add_to_list (&destructors, name);
2861 default: /* not a constructor or destructor */
2862 #ifdef COLLECT_EXPORT_LIST
2863 /* If we are building a shared object on AIX we need
2864 to explicitly export all global symbols or add
2865 them to import list. */
2868 if (which_pass == PASS_OBJ && (! export_flag))
2869 add_to_list (&exports, name);
2870 else if (! is_shared && which_pass == PASS_FIRST
2872 && is_in_list(name, undefined.first))
2873 add_to_list (&imports, name);
2879 #if !defined(EXTENDED_COFF)
2881 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2882 symbol.n_scnum, symbol.n_sclass,
2883 (symbol.n_type ? "0" : ""), symbol.n_type,
2888 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
2889 symbol.iss, (long) symbol.value, symbol.index, name);
2892 #ifdef COLLECT_EXPORT_LIST
2893 /* If we are building a shared object we should collect
2894 information about undefined symbols for later
2895 import list generation. */
2896 else if (shared_obj && GCC_UNDEF_SYMBOL (symbol))
2900 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2901 continue; /* should never happen */
2903 /* All AIX function names have a duplicate entry
2904 beginning with a dot. */
2907 add_to_list (&undefined, name);
2915 fatal ("%s: cannot open as COFF file", prog_name);
2917 #ifdef COLLECT_EXPORT_LIST
2918 /* On AIX loop continues while there are more members in archive. */
2920 while (ldclose (ldptr) == FAILURE);
2922 /* Otherwise we simply close ldptr. */
2923 (void) ldclose(ldptr);
2928 #ifdef COLLECT_EXPORT_LIST
2930 /* This new function is used to decide whether we should
2931 generate import list for an object or to use it directly. */
2933 use_import_list (prog_name)
2938 /* If we do not build a shared object then import list should not be used. */
2939 if (! shared_obj) return 0;
2941 /* Currently we check only for libgcc, but this can be changed in future. */
2942 p = strstr (prog_name, "libgcc.a");
2943 if (p != 0 && (strlen (p) == sizeof ("libgcc.a") - 1))
2948 /* Given a library name without "lib" prefix, this function
2949 returns a full library name including a path. */
2951 resolve_lib_name (name)
2957 for (i = 0; libpaths[i]; i++)
2958 if (libpaths[i]->max_len > l)
2959 l = libpaths[i]->max_len;
2961 lib_buf = xmalloc (l + strlen(name) + 10);
2963 for (i = 0; libpaths[i]; i++)
2965 struct prefix_list *list = libpaths[i]->plist;
2966 for (; list; list = list->next)
2968 for (j = 0; libexts[j]; j++)
2970 /* The following lines are needed because path_prefix list
2971 may contain directories both with trailing '/' and
2974 if (list->prefix[strlen(list->prefix)-1] != '/')
2976 sprintf (lib_buf, "%s%slib%s.%s",
2977 list->prefix, p, name, libexts[j]);
2978 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
2979 if (file_exists (lib_buf))
2981 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
2988 fprintf (stderr, "not found\n");
2990 fatal ("Library lib%s not found", name);
2994 /* Array of standard AIX libraries which should not
2995 be scanned for ctors/dtors. */
2996 static char* aix_std_libs[] = {
3001 "/usr/lib/libc_r.a",
3002 "/usr/lib/threads/libc.a",
3003 "/usr/ccs/lib/libc.a",
3004 "/usr/ccs/lib/libc_r.a",
3008 /* This function checks the filename and returns 1
3009 if this name matches the location of a standard AIX library. */
3011 ignore_library (name)
3014 char **p = &aix_std_libs[0];
3015 while (*p++ != NULL)
3016 if (! strcmp (name, *p)) return 1;
3022 #endif /* OBJECT_FORMAT_COFF */
3026 * OSF/rose specific stuff.
3029 #ifdef OBJECT_FORMAT_ROSE
3031 /* Union of the various load commands */
3033 typedef union load_union
3035 ldc_header_t hdr; /* common header */
3036 load_cmd_map_command_t map; /* map indexing other load cmds */
3037 interpreter_command_t iprtr; /* interpreter pathname */
3038 strings_command_t str; /* load commands strings section */
3039 region_command_t region; /* region load command */
3040 reloc_command_t reloc; /* relocation section */
3041 package_command_t pkg; /* package load command */
3042 symbols_command_t sym; /* symbol sections */
3043 entry_command_t ent; /* program start section */
3044 gen_info_command_t info; /* object information */
3045 func_table_command_t func; /* function constructors/destructors */
3048 /* Structure to point to load command and data section in memory. */
3050 typedef struct load_all
3052 load_union_t *load; /* load command */
3053 char *section; /* pointer to section */
3056 /* Structure to contain information about a file mapped into memory. */
3060 char *start; /* start of map */
3061 char *name; /* filename */
3062 long size; /* size of the file */
3063 long rounded_size; /* size rounded to page boundary */
3064 int fd; /* file descriptor */
3065 int rw; /* != 0 if opened read/write */
3066 int use_mmap; /* != 0 if mmap'ed */
3069 extern int decode_mach_o_hdr ();
3070 extern int encode_mach_o_hdr ();
3072 static void add_func_table PROTO((mo_header_t *, load_all_t *,
3073 symbol_info_t *, int));
3074 static void print_header PROTO((mo_header_t *));
3075 static void print_load_command PROTO((load_union_t *, size_t, int));
3076 static void bad_header PROTO((int));
3077 static struct file_info *read_file PROTO((char *, int, int));
3078 static void end_file PROTO((struct file_info *));
3080 /* OSF/rose specific version to scan the name list of the loaded
3081 program for the symbols g++ uses for static constructors and
3084 The constructor table begins at __CTOR_LIST__ and contains a count
3085 of the number of pointers (or -1 if the constructors are built in a
3086 separate section by the linker), followed by the pointers to the
3087 constructor functions, terminated with a null pointer. The
3088 destructor table has the same format, and begins at __DTOR_LIST__. */
3091 scan_prog_file (prog_name, which_pass)
3093 enum pass which_pass;
3097 load_all_t *load_array;
3098 load_all_t *load_end;
3099 load_all_t *load_cmd;
3100 int symbol_load_cmds;
3106 struct file_info *obj_file;
3108 mo_lcid_t cmd_strings = -1;
3109 symbol_info_t *main_sym = 0;
3110 int rw = (which_pass != PASS_FIRST);
3112 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3114 fatal_perror ("cannot read %s", prog_name);
3116 obj_file = read_file (prog_name, prog_fd, rw);
3117 obj = obj_file->start;
3119 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3120 if (status != MO_HDR_CONV_SUCCESS)
3121 bad_header (status);
3124 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3125 since the hardware will automatically swap bytes for us on loading little endian
3128 #ifndef CROSS_COMPILE
3129 if (hdr.moh_magic != MOH_MAGIC_MSB
3130 || hdr.moh_header_version != MOH_HEADER_VERSION
3131 || hdr.moh_byte_order != OUR_BYTE_ORDER
3132 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3133 || hdr.moh_cpu_type != OUR_CPU_TYPE
3134 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3135 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3137 fatal ("incompatibilities between object file & expected values");
3142 print_header (&hdr);
3144 offset = hdr.moh_first_cmd_off;
3145 load_end = load_array
3146 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3148 /* Build array of load commands, calculating the offsets */
3149 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3151 load_union_t *load_hdr; /* load command header */
3153 load_cmd = load_end++;
3154 load_hdr = (load_union_t *) (obj + offset);
3156 /* If modifying the program file, copy the header. */
3159 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3160 bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
3163 /* null out old command map, because we will rewrite at the end. */
3164 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3166 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3167 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3171 load_cmd->load = load_hdr;
3172 if (load_hdr->hdr.ldci_section_off > 0)
3173 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3176 print_load_command (load_hdr, offset, i);
3178 offset += load_hdr->hdr.ldci_cmd_size;
3181 /* If the last command is the load command map and is not undefined,
3182 decrement the count of load commands. */
3183 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3186 hdr.moh_n_load_cmds--;
3189 /* Go through and process each symbol table section. */
3190 symbol_load_cmds = 0;
3191 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3193 load_union_t *load_hdr = load_cmd->load;
3195 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3201 char *kind = "unknown";
3203 switch (load_hdr->sym.symc_kind)
3205 case SYMC_IMPORTS: kind = "imports"; break;
3206 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3207 case SYMC_STABS: kind = "stabs"; break;
3210 fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3211 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3214 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3217 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3218 if (str_sect == (char *) 0)
3219 fatal ("string section missing");
3221 if (load_cmd->section == (char *) 0)
3222 fatal ("section pointer missing");
3224 num_syms = load_hdr->sym.symc_nentries;
3225 for (i = 0; i < num_syms; i++)
3227 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3228 char *name = sym->si_name.symbol_name + str_sect;
3235 char *n = name + strlen (name) - strlen (NAME__MAIN);
3237 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3247 switch (is_ctor_dtor (name))
3250 add_to_list (&constructors, name);
3254 add_to_list (&destructors, name);
3257 default: /* not a constructor or destructor */
3263 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3264 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3269 if (symbol_load_cmds == 0)
3270 fatal ("no symbol table found");
3272 /* Update the program file now, rewrite header and load commands. At present,
3273 we assume that there is enough space after the last load command to insert
3274 one more. Since the first section written out is page aligned, and the
3275 number of load commands is small, this is ok for the present. */
3279 load_union_t *load_map;
3282 if (cmd_strings == -1)
3283 fatal ("no cmd_strings found");
3285 /* Add __main to initializer list.
3286 If we are building a program instead of a shared library, do not
3287 do anything, since in the current version, you cannot do mallocs
3288 and such in the constructors. */
3290 if (main_sym != (symbol_info_t *) 0
3291 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3292 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3295 fprintf (stderr, "\nUpdating header and load commands.\n\n");
3297 hdr.moh_n_load_cmds++;
3298 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3300 /* Create new load command map. */
3302 fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
3303 (int)hdr.moh_n_load_cmds, (long)size);
3305 load_map = (load_union_t *) xcalloc (1, size);
3306 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3307 load_map->map.ldc_header.ldci_cmd_size = size;
3308 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3309 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3310 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3312 offset = hdr.moh_first_cmd_off;
3313 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3315 load_map->map.lcm_map[i] = offset;
3316 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3317 hdr.moh_load_map_cmd_off = offset;
3319 offset += load_array[i].load->hdr.ldci_cmd_size;
3322 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3325 print_header (&hdr);
3328 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3329 if (status != MO_HDR_CONV_SUCCESS)
3330 bad_header (status);
3333 fprintf (stderr, "writing load commands.\n\n");
3335 /* Write load commands */
3336 offset = hdr.moh_first_cmd_off;
3337 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3339 load_union_t *load_hdr = load_array[i].load;
3340 size_t size = load_hdr->hdr.ldci_cmd_size;
3343 print_load_command (load_hdr, offset, i);
3345 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3350 end_file (obj_file);
3352 if (close (prog_fd))
3353 fatal_perror ("closing %s", prog_name);
3356 fprintf (stderr, "\n");
3360 /* Add a function table to the load commands to call a function
3361 on initiation or termination of the process. */
3364 add_func_table (hdr_p, load_array, sym, type)
3365 mo_header_t *hdr_p; /* pointer to global header */
3366 load_all_t *load_array; /* array of ptrs to load cmds */
3367 symbol_info_t *sym; /* pointer to symbol entry */
3368 int type; /* fntc_type value */
3370 /* Add a new load command. */
3371 int num_cmds = ++hdr_p->moh_n_load_cmds;
3372 int load_index = num_cmds - 1;
3373 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3374 load_union_t *ptr = xcalloc (1, size);
3375 load_all_t *load_cmd;
3378 /* Set the unresolved address bit in the header to force the loader to be
3379 used, since kernel exec does not call the initialization functions. */
3380 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3382 load_cmd = &load_array[load_index];
3383 load_cmd->load = ptr;
3384 load_cmd->section = (char *) 0;
3386 /* Fill in func table load command. */
3387 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3388 ptr->func.ldc_header.ldci_cmd_size = size;
3389 ptr->func.ldc_header.ldci_section_off = 0;
3390 ptr->func.ldc_header.ldci_section_len = 0;
3391 ptr->func.fntc_type = type;
3392 ptr->func.fntc_nentries = 1;
3394 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3395 /* Is the symbol already expressed as (region, offset)? */
3396 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3398 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3399 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3402 /* If not, figure out which region it's in. */
3405 mo_vm_addr_t addr = sym->si_value.abs_val;
3408 for (i = 0; i < load_index; i++)
3410 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3412 region_command_t *region_ptr = &load_array[i].load->region;
3414 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3415 && addr >= region_ptr->regc_addr.vm_addr
3416 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3418 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3419 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3427 fatal ("could not convert 0x%l.8x into a region", addr);
3432 "%s function, region %d, offset = %ld (0x%.8lx)\n",
3433 (type == FNTC_INITIALIZATION) ? "init" : "term",
3434 (int)ptr->func.fntc_entry_loc[i].adr_lcid,
3435 (long)ptr->func.fntc_entry_loc[i].adr_sctoff,
3436 (long)ptr->func.fntc_entry_loc[i].adr_sctoff);
3441 /* Print the global header for an OSF/rose object. */
3444 print_header (hdr_ptr)
3445 mo_header_t *hdr_ptr;
3447 fprintf (stderr, "\nglobal header:\n");
3448 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3449 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3450 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3451 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3452 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3453 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3454 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3455 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3456 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3457 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3458 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3459 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3460 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3461 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3462 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3464 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3465 fprintf (stderr, ", relocatable");
3467 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3468 fprintf (stderr, ", linkable");
3470 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3471 fprintf (stderr, ", execable");
3473 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3474 fprintf (stderr, ", executable");
3476 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3477 fprintf (stderr, ", unresolved");
3479 fprintf (stderr, "\n\n");
3484 /* Print a short summary of a load command. */
3487 print_load_command (load_hdr, offset, number)
3488 load_union_t *load_hdr;
3492 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3493 char *type_str = (char *) 0;
3497 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3498 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3499 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3500 case LDC_STRINGS: type_str = "STRINGS"; break;
3501 case LDC_REGION: type_str = "REGION"; break;
3502 case LDC_RELOC: type_str = "RELOC"; break;
3503 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3504 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3505 case LDC_ENTRY: type_str = "ENTRY"; break;
3506 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3507 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3511 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3513 (long) load_hdr->hdr.ldci_cmd_size,
3515 (long) load_hdr->hdr.ldci_section_off,
3516 (long) load_hdr->hdr.ldci_section_len);
3518 if (type_str == (char *) 0)
3519 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3521 else if (type != LDC_REGION)
3522 fprintf (stderr, ", ty: %s\n", type_str);
3527 switch (load_hdr->region.regc_usage_type)
3529 case REG_TEXT_T: region = ", .text"; break;
3530 case REG_DATA_T: region = ", .data"; break;
3531 case REG_BSS_T: region = ", .bss"; break;
3532 case REG_GLUE_T: region = ", .glue"; break;
3533 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3534 case REG_RDATA_T: region = ", .rdata"; break;
3535 case REG_SDATA_T: region = ", .sdata"; break;
3536 case REG_SBSS_T: region = ", .sbss"; break;
3540 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3542 (long) load_hdr->region.regc_vm_addr,
3543 (long) load_hdr->region.regc_vm_size,
3551 /* Fatal error when {en,de}code_mach_o_header fails. */
3557 char *msg = (char *) 0;
3561 case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break;
3562 case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break;
3563 case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break;
3564 case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break;
3565 case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break;
3566 case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break;
3569 if (msg == (char *) 0)
3570 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3576 /* Read a file into a memory buffer. */
3578 static struct file_info *
3579 read_file (name, fd, rw)
3580 char *name; /* filename */
3581 int fd; /* file descriptor */
3582 int rw; /* read/write */
3584 struct stat stat_pkt;
3585 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3587 static int page_size;
3590 if (fstat (fd, &stat_pkt) < 0)
3591 fatal_perror ("fstat %s", name);
3594 p->size = stat_pkt.st_size;
3595 p->rounded_size = stat_pkt.st_size;
3601 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3604 page_size = sysconf (_SC_PAGE_SIZE);
3606 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3607 p->start = mmap ((caddr_t) 0,
3608 (rw) ? p->rounded_size : p->size,
3609 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3610 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3614 if (p->start != (char *) 0 && p->start != (char *) -1)
3618 #endif /* USE_MMAP */
3623 fprintf (stderr, "read %s\n", name);
3626 p->start = xmalloc (p->size);
3627 if (lseek (fd, 0L, SEEK_SET) < 0)
3628 fatal_perror ("lseek to 0 on %s", name);
3630 len = read (fd, p->start, p->size);
3632 fatal_perror ("read %s", name);
3635 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3641 /* Do anything necessary to write a file back from memory. */
3645 struct file_info *ptr; /* file information block */
3653 fprintf (stderr, "msync %s\n", ptr->name);
3655 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3656 fatal_perror ("msync %s", ptr->name);
3660 fprintf (stderr, "munmap %s\n", ptr->name);
3662 if (munmap (ptr->start, ptr->size))
3663 fatal_perror ("munmap %s", ptr->name);
3666 #endif /* USE_MMAP */
3673 fprintf (stderr, "write %s\n", ptr->name);
3675 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3676 fatal_perror ("lseek to 0 on %s", ptr->name);
3678 len = write (ptr->fd, ptr->start, ptr->size);
3680 fatal_perror ("write %s", ptr->name);
3682 if (len != ptr->size)
3683 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3692 #endif /* OBJECT_FORMAT_ROSE */