1 /* Collect static initialization info into data structures that can be
2 traversed by C++ initialization and finalization routines.
3 Copyright (C) 1992, 93-98, 1999 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. */
32 #ifdef vfork /* Autoconf may define this to fork for us. */
33 # define VFORK_STRING "fork"
35 # define VFORK_STRING "vfork"
41 #define vfork() (decc$$alloc_vfork_blocks() >= 0 ? \
42 lib$get_current_invo_context(decc$$get_vfork_jmpbuf()) : -1)
52 /* Obstack allocation and deallocation routines. */
53 #define obstack_chunk_alloc xmalloc
54 #define obstack_chunk_free free
56 extern char *make_temp_file PROTO ((char *));
58 /* On certain systems, we have code that works by scanning the object file
59 directly. But this code uses system-specific header files and library
60 functions, so turn it off in a cross-compiler. Likewise, the names of
61 the utilities are not correct for a cross-compiler; we have to hope that
62 cross-versions are in the proper directories. */
65 #undef SUNOS4_SHARED_LIBRARIES
66 #undef OBJECT_FORMAT_COFF
67 #undef OBJECT_FORMAT_ROSE
69 #undef REAL_LD_FILE_NAME
70 #undef REAL_NM_FILE_NAME
71 #undef REAL_STRIP_FILE_NAME
74 /* If we cannot use a special method, use the ordinary one:
75 run nm to find what symbols are present.
76 In a cross-compiler, this means you need a cross nm,
77 but that is not quite as unpleasant as special headers. */
79 #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
80 #define OBJECT_FORMAT_NONE
83 #ifdef OBJECT_FORMAT_COFF
92 /* Many versions of ldfcn.h define these. */
100 /* Some systems have an ISCOFF macro, but others do not. In some cases
101 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
102 that either do not have an ISCOFF macro in /usr/include or for those
103 where it is wrong. */
106 #define MY_ISCOFF(X) ISCOFF (X)
109 #endif /* OBJECT_FORMAT_COFF */
111 #ifdef OBJECT_FORMAT_ROSE
118 #include <sys/mman.h>
122 #include <mach_o_format.h>
123 #include <mach_o_header.h>
124 #include <mach_o_vals.h>
125 #include <mach_o_types.h>
127 #endif /* OBJECT_FORMAT_ROSE */
129 #ifdef OBJECT_FORMAT_NONE
131 /* Default flags to pass to nm. */
133 #define NM_FLAGS "-n"
136 #endif /* OBJECT_FORMAT_NONE */
138 /* Some systems use __main in a way incompatible with its use in gcc, in these
139 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
140 give the same symbol without quotes for an alternative entry point. You
141 must define both, or neither. */
143 #define NAME__MAIN "__main"
144 #define SYMBOL__MAIN __main
147 /* This must match tree.h. */
148 #define DEFAULT_INIT_PRIORITY 65535
150 #if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES
151 #define SCAN_LIBRARIES
155 int do_collecting = 1;
157 int do_collecting = 0;
160 /* Linked lists of constructor and destructor names. */
176 /* Enumeration giving which pass this is for scanning the program file. */
179 PASS_FIRST, /* without constructors */
180 PASS_OBJ, /* individual objects */
181 PASS_LIB, /* looking for shared libraries */
182 PASS_SECOND /* with constructors linked in */
185 extern char *version_string;
187 int vflag; /* true if -v */
188 static int rflag; /* true if -r */
189 static int strip_flag; /* true if -s */
190 #ifdef COLLECT_EXPORT_LIST
191 static int export_flag; /* true if -bE */
192 static int aix64_flag; /* true if -b64 */
195 int debug; /* true if -debug */
197 static int shared_obj; /* true if -shared */
199 static char *c_file; /* <xxx>.c for constructor/destructor list. */
200 static char *o_file; /* <xxx>.o for constructor/destructor list. */
201 #ifdef COLLECT_EXPORT_LIST
202 static char *export_file; /* <xxx>.x for AIX export list. */
203 static char *import_file; /* <xxx>.p for AIX import list. */
205 char *ldout; /* File for ld errors. */
206 static char *output_file; /* Output file for ld. */
207 static char *nm_file_name; /* pathname of nm */
209 static char *ldd_file_name; /* pathname of ldd (or equivalent) */
211 static char *strip_file_name; /* pathname of strip */
212 char *c_file_name; /* pathname of gcc */
213 static char *initname, *fininame; /* names of init and fini funcs */
215 static struct head constructors; /* list of constructors found */
216 static struct head destructors; /* list of destructors found */
217 #ifdef COLLECT_EXPORT_LIST
218 static struct head exports; /* list of exported symbols */
219 static struct head imports; /* list of imported symbols */
220 static struct head undefined; /* list of undefined symbols */
222 static struct head frame_tables; /* list of frame unwind info tables */
224 struct obstack temporary_obstack;
225 struct obstack permanent_obstack;
226 char * temporary_firstobj;
228 /* Holds the return value of pexecute. */
231 /* Defined in the automatically-generated underscore.c. */
232 extern int prepends_underscore;
234 extern FILE *fdopen ();
236 #ifndef GET_ENV_PATH_LIST
237 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
240 /* Structure to hold all the directories in which to search for files to
245 char *prefix; /* String to prepend to the path. */
246 struct prefix_list *next; /* Next in linked list. */
251 struct prefix_list *plist; /* List of prefixes to try */
252 int max_len; /* Max length of a prefix in PLIST */
253 char *name; /* Name of this list (used in config stuff) */
256 #ifdef COLLECT_EXPORT_LIST
257 /* Lists to keep libraries to be scanned for global constructors/destructors. */
258 static struct head libs; /* list of libraries */
259 static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */
260 static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */
261 static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs,
262 &libpath_lib_dirs, NULL};
263 static char *libexts[3] = {"a", "so", NULL}; /* possible library extentions */
266 void error PVPROTO((const char *, ...)) ATTRIBUTE_PRINTF_1;
267 void fatal PVPROTO((const char *, ...))
268 ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
269 void fatal_perror PVPROTO((const char *, ...))
270 ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
271 static char *my_strerror PROTO((int));
272 static const char *my_strsignal 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 *));
320 while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
323 close (fdtmp[--fdx]);
342 if (e > 0 && e < sys_nerr)
343 return sys_errlist[e];
353 #ifdef HAVE_STRSIGNAL
354 return strsignal (s);
356 if (s >= 0 && s < NSIG)
358 # ifdef NO_SYS_SIGLIST
359 static char buffer[30];
361 sprintf (buffer, "Unknown signal %d", s);
364 return sys_siglist[s];
369 #endif /* HAVE_STRSIGNAL */
372 /* Delete tempfiles and exit function. */
375 collect_exit (status)
378 if (c_file != 0 && c_file[0])
379 maybe_unlink (c_file);
381 if (o_file != 0 && o_file[0])
382 maybe_unlink (o_file);
384 #ifdef COLLECT_EXPORT_LIST
385 if (export_file != 0 && export_file[0])
386 maybe_unlink (export_file);
388 if (import_file != 0 && import_file[0])
389 maybe_unlink (import_file);
392 if (ldout != 0 && ldout[0])
395 maybe_unlink (ldout);
398 if (status != 0 && output_file != 0 && output_file[0])
399 maybe_unlink (output_file);
405 /* Notify user of a non-error. */
407 notice VPROTO((char *msgid, ...))
409 #ifndef ANSI_PROTOTYPES
414 VA_START (ap, msgid);
416 #ifndef ANSI_PROTOTYPES
417 msgid = va_arg (ap, char *);
420 vfprintf (stderr, _(msgid), ap);
424 /* Die when sys call fails. */
427 fatal_perror VPROTO((const char * msgid, ...))
429 #ifndef ANSI_PROTOTYPES
435 VA_START (ap, msgid);
437 #ifndef ANSI_PROTOTYPES
438 msgid = va_arg (ap, const char *);
441 fprintf (stderr, "collect2: ");
442 vfprintf (stderr, _(msgid), ap);
443 fprintf (stderr, ": %s\n", my_strerror (e));
446 collect_exit (FATAL_EXIT_CODE);
452 fatal VPROTO((const char * msgid, ...))
454 #ifndef ANSI_PROTOTYPES
459 VA_START (ap, msgid);
461 #ifndef ANSI_PROTOTYPES
462 msgid = va_arg (ap, const char *);
465 fprintf (stderr, "collect2: ");
466 vfprintf (stderr, _(msgid), ap);
467 fprintf (stderr, "\n");
470 collect_exit (FATAL_EXIT_CODE);
473 /* Write error message. */
476 error VPROTO((const char * msgid, ...))
478 #ifndef ANSI_PROTOTYPES
483 VA_START (ap, msgid);
485 #ifndef ANSI_PROTOTYPES
486 msgid = va_arg (ap, const char *);
489 fprintf (stderr, "collect2: ");
490 vfprintf (stderr, _(msgid), ap);
491 fprintf (stderr, "\n");
495 /* In case obstack is linked in, and abort is defined to fancy_abort,
496 provide a default entry. */
501 fatal ("internal error");
508 if (c_file != 0 && c_file[0])
509 maybe_unlink (c_file);
511 if (o_file != 0 && o_file[0])
512 maybe_unlink (o_file);
514 if (ldout != 0 && ldout[0])
515 maybe_unlink (ldout);
517 #ifdef COLLECT_EXPORT_LIST
518 if (export_file != 0 && export_file[0])
519 maybe_unlink (export_file);
521 if (import_file != 0 && import_file[0])
522 maybe_unlink (import_file);
525 signal (signo, SIG_DFL);
526 kill (getpid (), signo);
531 xcalloc (size1, size2)
534 PTR ptr = (PTR) calloc (size1, size2);
536 fatal ("out of memory");
544 PTR ptr = (PTR) malloc (size);
546 fatal ("out of memory");
557 ptr = (PTR) realloc (old, size);
559 ptr = (PTR) malloc (size);
561 fatal ("virtual memory exhausted");
569 return access (name, R_OK) == 0;
572 /* Make a copy of a string INPUT with size SIZE. */
578 register size_t len = strlen (input) + 1;
579 register char *output = xmalloc (len);
580 memcpy (output, input, len);
584 /* Parse a reasonable subset of shell quoting syntax. */
601 obstack_1grow (&temporary_obstack, c);
602 else if (! inside && c == ' ')
604 else if (! inside && c == '\\')
609 obstack_1grow (&temporary_obstack, c);
612 obstack_1grow (&temporary_obstack, '\0');
614 return obstack_finish (&temporary_obstack);
621 FILE *stream = fopen (name, "r");
622 int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
629 while (c = getc (stream),
630 c != EOF && (ISALNUM (c) || c == '_' || c == '$' || c == '.'))
631 obstack_1grow (&temporary_obstack, c);
632 if (obstack_object_size (&temporary_obstack) > 0)
634 char *word, *p, *result;
635 obstack_1grow (&temporary_obstack, '\0');
636 word = obstack_finish (&temporary_obstack);
639 ++word, putc ('.', stderr);
641 if (*p == '_' && prepends_underscore)
647 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
652 fputs (result, stderr);
654 diff = strlen (word) - strlen (result);
656 --diff, putc (' ', stderr);
657 while (diff < 0 && c == ' ')
658 ++diff, c = getc (stream);
663 fputs (word, stderr);
666 obstack_free (&temporary_obstack, temporary_firstobj);
675 /* Decide whether the given symbol is:
676 a constructor (1), a destructor (2), or neither (0). */
682 struct names { char *name; int len; int ret; int two_underscores; };
684 register struct names *p;
686 register char *orig_s = s;
688 static struct names special[] = {
689 #ifdef NO_DOLLAR_IN_LABEL
690 #ifdef NO_DOT_IN_LABEL
691 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
692 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
693 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
695 { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
696 { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
697 { "GLOBAL_.F.", sizeof ("GLOBAL_.F.")-1, 5, 0 },
700 { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
701 { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
702 { "GLOBAL_$F$", sizeof ("GLOBAL_$F$")-1, 5, 0 },
704 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
705 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
706 #ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
707 cfront has its own linker procedure to collect them;
708 if collect2 gets them too, they get collected twice
709 when the cfront procedure is run and the compiler used
710 for linking happens to be GCC. */
711 { "sti__", sizeof ("sti__")-1, 1, 1 },
712 { "std__", sizeof ("std__")-1, 2, 1 },
713 #endif /* CFRONT_LOSSAGE */
717 while ((ch = *s) == '_')
723 for (p = &special[0]; p->len > 0; p++)
726 && (!p->two_underscores || ((s - orig_s) >= 2))
727 && strncmp(s, p->name, p->len) == 0)
735 /* Routine to add variables to the environment. */
743 #ifndef VMS /* nor about VMS */
745 extern char **environ;
746 char **old_environ = environ;
753 while ((ch = *p++) != '\0' && ch != '=')
759 /* Search for replacing an existing environment variable, and
760 count the number of total environment variables. */
761 for (envp = old_environ; *envp; envp++)
764 if (!strncmp (str, *envp, name_len))
771 /* Add a new environment variable */
772 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
774 bcopy ((char *) old_environ, (char *) (environ + 1),
775 sizeof (char *) * (num_envs+1));
781 #endif /* HAVE_PUTENV */
783 /* By default, colon separates directories in a path. */
784 #ifndef PATH_SEPARATOR
785 #define PATH_SEPARATOR ':'
788 /* We maintain two prefix lists: one from COMPILER_PATH environment variable
789 and one from the PATH variable. */
791 static struct path_prefix cpath, path;
794 /* This is the name of the target machine. We use it to form the name
795 of the files to execute. */
797 static char *target_machine = TARGET_MACHINE;
800 /* Search for NAME using prefix list PPREFIX. We only look for executable
803 Return 0 if not found, otherwise return its name, allocated with malloc. */
806 find_a_file (pprefix, name)
807 struct path_prefix *pprefix;
811 struct prefix_list *pl;
812 int len = pprefix->max_len + strlen (name) + 1;
815 fprintf (stderr, "Looking for '%s'\n", name);
817 #ifdef EXECUTABLE_SUFFIX
818 len += strlen (EXECUTABLE_SUFFIX);
821 temp = xmalloc (len);
823 /* Determine the filename to execute (special case for absolute paths). */
826 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
827 || (*name && name[1] == ':')
831 if (access (name, X_OK) == 0)
836 fprintf (stderr, " - found: absolute path\n");
841 #ifdef EXECUTABLE_SUFFIX
842 /* Some systems have a suffix for executable files.
843 So try appending that. */
845 strcat (temp, EXECUTABLE_SUFFIX);
847 if (access (temp, X_OK) == 0)
852 fprintf (stderr, " - failed to locate using absolute path\n");
855 for (pl = pprefix->plist; pl; pl = pl->next)
857 strcpy (temp, pl->prefix);
860 if (access (temp, X_OK) == 0)
863 #ifdef EXECUTABLE_SUFFIX
864 /* Some systems have a suffix for executable files.
865 So try appending that. */
866 strcat (temp, EXECUTABLE_SUFFIX);
868 if (access (temp, X_OK) == 0)
873 if (debug && pprefix->plist == NULL)
874 fprintf (stderr, " - failed: no entries in prefix list\n");
880 /* Add an entry for PREFIX to prefix list PPREFIX. */
883 add_prefix (pprefix, prefix)
884 struct path_prefix *pprefix;
887 struct prefix_list *pl, **prev;
892 for (pl = pprefix->plist; pl->next; pl = pl->next)
897 prev = &pprefix->plist;
899 /* Keep track of the longest prefix */
901 len = strlen (prefix);
902 if (len > pprefix->max_len)
903 pprefix->max_len = len;
905 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
906 pl->prefix = xstrdup (prefix);
911 pl->next = (struct prefix_list *) 0;
915 /* Take the value of the environment variable ENV, break it into a path, and
916 add of the entries to PPREFIX. */
919 prefix_from_env (env, pprefix)
921 struct path_prefix *pprefix;
924 GET_ENV_PATH_LIST (p, env);
927 prefix_from_string (p, pprefix);
931 prefix_from_string (p, pprefix)
933 struct path_prefix *pprefix;
936 char *nstore = (char *) xmalloc (strlen (p) + 3);
939 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
944 if (*endp == PATH_SEPARATOR || *endp == 0)
946 strncpy (nstore, startp, endp-startp);
949 strcpy (nstore, "./");
951 else if (endp[-1] != '/')
953 nstore[endp-startp] = '/';
954 nstore[endp-startp+1] = 0;
957 nstore[endp-startp] = 0;
960 fprintf (stderr, " - add prefix: %s\n", nstore);
962 add_prefix (pprefix, nstore);
965 endp = startp = endp + 1;
979 char *ld_suffix = "ld";
980 char *full_ld_suffix = ld_suffix;
981 char *real_ld_suffix = "real-ld";
982 char *collect_ld_suffix = "collect-ld";
983 char *nm_suffix = "nm";
984 char *full_nm_suffix = nm_suffix;
985 char *gnm_suffix = "gnm";
986 char *full_gnm_suffix = gnm_suffix;
988 char *ldd_suffix = LDD_SUFFIX;
989 char *full_ldd_suffix = ldd_suffix;
991 char *strip_suffix = "strip";
992 char *full_strip_suffix = strip_suffix;
993 char *gstrip_suffix = "gstrip";
994 char *full_gstrip_suffix = gstrip_suffix;
997 #ifdef COLLECT_EXPORT_LIST
1012 int num_c_args = argc+9;
1014 #if defined (COLLECT2_HOST_INITIALZATION)
1015 /* Perform system dependant initialization, if neccessary. */
1016 COLLECT2_HOST_INITIALZATION;
1019 #ifdef HAVE_LC_MESSAGES
1020 setlocale (LC_MESSAGES, "");
1022 (void) bindtextdomain (PACKAGE, localedir);
1023 (void) textdomain (PACKAGE);
1025 /* Do not invoke xcalloc before this point, since locale needs to be
1026 set first, in case a diagnostic is issued. */
1028 ld1 = ld1_argv = (char **) xcalloc (sizeof (char *), argc+3);
1029 ld2 = ld2_argv = (char **) xcalloc (sizeof (char *), argc+6);
1030 object = object_lst = (char **) xcalloc (sizeof (char *), argc);
1036 /* Parse command line early for instances of -debug. This allows
1037 the debug flag to be set before functions like find_a_file()
1042 for (i = 1; argv[i] != NULL; i ++)
1043 if (! strcmp (argv[i], "-debug"))
1048 #ifndef DEFAULT_A_OUT_NAME
1049 output_file = "a.out";
1051 output_file = DEFAULT_A_OUT_NAME;
1054 obstack_begin (&temporary_obstack, 0);
1055 obstack_begin (&permanent_obstack, 0);
1056 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
1058 current_demangling_style = gnu_demangling;
1059 p = getenv ("COLLECT_GCC_OPTIONS");
1062 char *q = extract_string (&p);
1063 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1066 obstack_free (&temporary_obstack, temporary_firstobj);
1069 c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
1072 fatal ("no arguments");
1075 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
1076 signal (SIGQUIT, handler);
1078 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
1079 signal (SIGINT, handler);
1081 if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
1082 signal (SIGALRM, handler);
1085 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
1086 signal (SIGHUP, handler);
1088 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
1089 signal (SIGSEGV, handler);
1091 if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
1092 signal (SIGBUS, handler);
1095 /* Extract COMPILER_PATH and PATH into our prefix list. */
1096 prefix_from_env ("COMPILER_PATH", &cpath);
1097 prefix_from_env ("PATH", &path);
1099 #ifdef CROSS_COMPILE
1100 /* If we look for a program in the compiler directories, we just use
1101 the short name, since these directories are already system-specific.
1102 But it we look for a program in the system directories, we need to
1103 qualify the program name with the target machine. */
1106 = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
1107 strcpy (full_ld_suffix, target_machine);
1108 strcat (full_ld_suffix, "-");
1109 strcat (full_ld_suffix, ld_suffix);
1113 = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
1114 strcpy (full_gld_suffix, target_machine);
1115 strcat (full_gld_suffix, "-");
1116 strcat (full_gld_suffix, gld_suffix);
1120 = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
1121 strcpy (full_nm_suffix, target_machine);
1122 strcat (full_nm_suffix, "-");
1123 strcat (full_nm_suffix, nm_suffix);
1126 = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
1127 strcpy (full_gnm_suffix, target_machine);
1128 strcat (full_gnm_suffix, "-");
1129 strcat (full_gnm_suffix, gnm_suffix);
1133 = xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1);
1134 strcpy (full_ldd_suffix, target_machine);
1135 strcat (full_ldd_suffix, "-");
1136 strcat (full_ldd_suffix, ldd_suffix);
1140 = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
1141 strcpy (full_strip_suffix, target_machine);
1142 strcat (full_strip_suffix, "-");
1143 strcat (full_strip_suffix, strip_suffix);
1146 = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
1147 strcpy (full_gstrip_suffix, target_machine);
1148 strcat (full_gstrip_suffix, "-");
1149 strcat (full_gstrip_suffix, gstrip_suffix);
1150 #endif /* CROSS_COMPILE */
1152 /* Try to discover a valid linker/nm/strip to use. */
1154 /* Maybe we know the right file to use (if not cross). */
1156 #ifdef DEFAULT_LINKER
1157 if (access (DEFAULT_LINKER, X_OK) == 0)
1158 ld_file_name = DEFAULT_LINKER;
1159 if (ld_file_name == 0)
1161 #ifdef REAL_LD_FILE_NAME
1162 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
1163 if (ld_file_name == 0)
1165 /* Search the (target-specific) compiler dirs for ld'. */
1166 ld_file_name = find_a_file (&cpath, real_ld_suffix);
1167 /* Likewise for `collect-ld'. */
1168 if (ld_file_name == 0)
1169 ld_file_name = find_a_file (&cpath, collect_ld_suffix);
1170 /* Search the compiler directories for `ld'. We have protection against
1171 recursive calls in find_a_file. */
1172 if (ld_file_name == 0)
1173 ld_file_name = find_a_file (&cpath, ld_suffix);
1174 /* Search the ordinary system bin directories
1175 for `ld' (if native linking) or `TARGET-ld' (if cross). */
1176 if (ld_file_name == 0)
1177 ld_file_name = find_a_file (&path, full_ld_suffix);
1179 #ifdef REAL_NM_FILE_NAME
1180 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
1181 if (nm_file_name == 0)
1183 nm_file_name = find_a_file (&cpath, gnm_suffix);
1184 if (nm_file_name == 0)
1185 nm_file_name = find_a_file (&path, full_gnm_suffix);
1186 if (nm_file_name == 0)
1187 nm_file_name = find_a_file (&cpath, nm_suffix);
1188 if (nm_file_name == 0)
1189 nm_file_name = find_a_file (&path, full_nm_suffix);
1192 ldd_file_name = find_a_file (&cpath, ldd_suffix);
1193 if (ldd_file_name == 0)
1194 ldd_file_name = find_a_file (&path, full_ldd_suffix);
1197 #ifdef REAL_STRIP_FILE_NAME
1198 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
1199 if (strip_file_name == 0)
1201 strip_file_name = find_a_file (&cpath, gstrip_suffix);
1202 if (strip_file_name == 0)
1203 strip_file_name = find_a_file (&path, full_gstrip_suffix);
1204 if (strip_file_name == 0)
1205 strip_file_name = find_a_file (&cpath, strip_suffix);
1206 if (strip_file_name == 0)
1207 strip_file_name = find_a_file (&path, full_strip_suffix);
1209 /* Determine the full path name of the C compiler to use. */
1210 c_file_name = getenv ("COLLECT_GCC");
1211 if (c_file_name == 0)
1213 #ifdef CROSS_COMPILE
1214 c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
1215 strcpy (c_file_name, target_machine);
1216 strcat (c_file_name, "-gcc");
1218 c_file_name = "gcc";
1222 p = find_a_file (&cpath, c_file_name);
1224 /* Here it should be safe to use the system search path since we should have
1225 already qualified the name of the compiler when it is needed. */
1227 p = find_a_file (&path, c_file_name);
1232 *ld1++ = *ld2++ = ld_file_name;
1234 /* Make temp file names. */
1235 c_file = make_temp_file (".c");
1236 o_file = make_temp_file (".o");
1237 #ifdef COLLECT_EXPORT_LIST
1238 export_file = make_temp_file (".x");
1239 import_file = make_temp_file (".p");
1241 ldout = make_temp_file (".ld");
1242 *c_ptr++ = c_file_name;
1249 #ifdef COLLECT_EXPORT_LIST
1250 /* Generate a list of directories from LIBPATH. */
1251 prefix_from_env ("LIBPATH", &libpath_lib_dirs);
1252 /* Add to this list also two standard directories where
1253 AIX loader always searches for libraries. */
1254 add_prefix (&libpath_lib_dirs, "/lib");
1255 add_prefix (&libpath_lib_dirs, "/usr/lib");
1258 /* Get any options that the upper GCC wants to pass to the sub-GCC.
1260 AIX support needs to know if -shared has been specified before
1261 parsing commandline arguments. */
1263 p = getenv ("COLLECT_GCC_OPTIONS");
1266 char *q = extract_string (&p);
1267 if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
1268 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1269 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
1270 *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
1271 if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
1274 obstack_free (&temporary_obstack, temporary_firstobj);
1275 *c_ptr++ = "-fno-exceptions";
1277 /* !!! When GCC calls collect2,
1278 it does not know whether it is calling collect2 or ld.
1279 So collect2 cannot meaningfully understand any options
1280 except those ld understands.
1281 If you propose to make GCC pass some other option,
1282 just imagine what will happen if ld is really ld!!! */
1284 /* Parse arguments. Remember output file spec, pass the rest to ld. */
1285 /* After the first file, put in the c++ rt0. */
1288 while ((arg = *++argv) != (char *) 0)
1290 *ld1++ = *ld2++ = arg;
1296 #ifdef COLLECT_EXPORT_LIST
1297 /* We want to disable automatic exports on AIX when user
1298 explicitly puts an export list in command line */
1300 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
1302 else if (arg[2] == '6' && arg[3] == '4')
1308 if (!strcmp (arg, "-debug"))
1310 /* Already parsed. */
1319 /* place o_file BEFORE this argument! */
1325 #ifdef COLLECT_EXPORT_LIST
1327 /* Resolving full library name. */
1328 char *s = resolve_lib_name (arg+2);
1330 /* If we will use an import list for this library,
1331 we should exclude it from ld args. */
1332 if (use_import_list (s))
1338 /* Saving a full library name. */
1339 add_to_list (&libs, s);
1344 #ifdef COLLECT_EXPORT_LIST
1345 /* Saving directories where to search for libraries. */
1347 add_prefix (&cmdline_lib_dirs, arg+2);
1353 output_file = *ld1++ = *ld2++ = *++argv;
1355 output_file = &arg[2];
1364 if (arg[2] == '\0' && do_collecting)
1366 /* We must strip after the nm run, otherwise C++ linking
1367 will not work. Thus we strip in the second ld run, or
1368 else with strip if there is no second ld run. */
1380 else if ((p = rindex (arg, '.')) != (char *) 0
1381 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
1382 || strcmp (p, ".so") == 0))
1391 /* place o_file BEFORE this argument! */
1399 #ifdef COLLECT_EXPORT_LIST
1400 /* libraries can be specified directly, i.e. without -l flag. */
1403 /* If we will use an import list for this library,
1404 we should exclude it from ld args. */
1405 if (use_import_list (arg))
1411 /* Saving a full library name. */
1412 add_to_list (&libs, arg);
1418 #ifdef COLLECT_EXPORT_LIST
1419 /* This is added only for debugging purposes. */
1422 fprintf (stderr, "List of libraries:\n");
1423 dump_list (stderr, "\t", libs.first);
1426 /* The AIX linker will discard static constructors in object files if
1427 nothing else in the file is referenced, so look at them first. */
1429 char **export_object_lst = object_lst;
1430 while (export_object_lst < object)
1431 scan_prog_file (*export_object_lst++, PASS_OBJ);
1434 struct id *list = libs.first;
1435 for (; list; list = list->next)
1436 scan_prog_file (list->name, PASS_FIRST);
1439 char *buf1 = alloca (strlen (export_file) + 5);
1440 char *buf2 = alloca (strlen (import_file) + 5);
1441 sprintf (buf1, "-bE:%s", export_file);
1442 sprintf (buf2, "-bI:%s", import_file);
1447 exportf = fopen (export_file, "w");
1448 if (exportf == (FILE *) 0)
1449 fatal_perror ("fopen %s", export_file);
1450 write_export_file (exportf);
1451 if (fclose (exportf))
1452 fatal_perror ("fclose %s", export_file);
1453 importf = fopen (import_file, "w");
1454 if (importf == (FILE *) 0)
1455 fatal_perror ("%s", import_file);
1456 write_import_file (importf);
1457 if (fclose (importf))
1458 fatal_perror ("fclose %s", import_file);
1463 *object = *c_ptr = *ld1 = (char *) 0;
1467 notice ("collect2 version %s", version_string);
1468 #ifdef TARGET_VERSION
1471 fprintf (stderr, "\n");
1477 fprintf (stderr, "ld_file_name = %s\n",
1478 (ld_file_name ? ld_file_name : "not found"));
1479 fprintf (stderr, "c_file_name = %s\n",
1480 (c_file_name ? c_file_name : "not found"));
1481 fprintf (stderr, "nm_file_name = %s\n",
1482 (nm_file_name ? nm_file_name : "not found"));
1484 fprintf (stderr, "ldd_file_name = %s\n",
1485 (ldd_file_name ? ldd_file_name : "not found"));
1487 fprintf (stderr, "strip_file_name = %s\n",
1488 (strip_file_name ? strip_file_name : "not found"));
1489 fprintf (stderr, "c_file = %s\n",
1490 (c_file ? c_file : "not found"));
1491 fprintf (stderr, "o_file = %s\n",
1492 (o_file ? o_file : "not found"));
1494 ptr = getenv ("COLLECT_GCC_OPTIONS");
1496 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
1498 ptr = getenv ("COLLECT_GCC");
1500 fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
1502 ptr = getenv ("COMPILER_PATH");
1504 fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
1506 ptr = getenv ("LIBRARY_PATH");
1508 fprintf (stderr, "LIBRARY_PATH = %s\n", ptr);
1510 fprintf (stderr, "\n");
1513 /* Load the program, searching all libraries and attempting to provide
1514 undefined symbols from repository information. */
1516 /* On AIX we do this later. */
1517 #ifndef COLLECT_EXPORT_LIST
1518 do_tlink (ld1_argv, object_lst);
1521 /* If -r or they will be run via some other method, do not build the
1522 constructor or destructor list, just return now. */
1524 #ifndef COLLECT_EXPORT_LIST
1529 #ifdef COLLECT_EXPORT_LIST
1530 /* But make sure we delete the export file we may have created. */
1531 if (export_file != 0 && export_file[0])
1532 maybe_unlink (export_file);
1533 if (import_file != 0 && import_file[0])
1534 maybe_unlink (import_file);
1536 maybe_unlink (c_file);
1537 maybe_unlink (o_file);
1541 /* Examine the namelist with nm and search it for static constructors
1542 and destructors to call.
1543 Write the constructor and destructor tables to a .s file and reload. */
1545 /* On AIX we already done scanning for global constructors/destructors. */
1546 #ifndef COLLECT_EXPORT_LIST
1547 scan_prog_file (output_file, PASS_FIRST);
1550 #ifdef SCAN_LIBRARIES
1551 scan_libraries (output_file);
1556 notice ("%d constructor(s) found\n", constructors.number);
1557 notice ("%d destructor(s) found\n", destructors.number);
1560 if (constructors.number == 0 && destructors.number == 0
1561 && frame_tables.number == 0
1562 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
1563 /* If we will be running these functions ourselves, we want to emit
1564 stubs into the shared library so that we do not have to relink
1565 dependent programs when we add static objects. */
1570 #ifdef COLLECT_EXPORT_LIST
1571 /* Doing tlink without additional code generation */
1572 do_tlink (ld1_argv, object_lst);
1574 /* Strip now if it was requested on the command line. */
1577 char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
1578 strip_argv[0] = strip_file_name;
1579 strip_argv[1] = output_file;
1580 strip_argv[2] = (char *) 0;
1581 fork_execute ("strip", strip_argv);
1584 #ifdef COLLECT_EXPORT_LIST
1585 maybe_unlink (export_file);
1586 maybe_unlink (import_file);
1588 maybe_unlink (c_file);
1589 maybe_unlink (o_file);
1593 /* Sort ctor and dtor lists by priority. */
1594 sort_ids (&constructors);
1595 sort_ids (&destructors);
1597 maybe_unlink(output_file);
1598 outf = fopen (c_file, "w");
1599 if (outf == (FILE *) 0)
1600 fatal_perror ("fopen %s", c_file);
1602 write_c_file (outf, c_file);
1605 fatal_perror ("fclose %s", c_file);
1607 /* Tell the linker that we have initializer and finalizer functions. */
1608 #ifdef LD_INIT_SWITCH
1609 *ld2++ = LD_INIT_SWITCH;
1611 *ld2++ = LD_FINI_SWITCH;
1616 #ifdef COLLECT_EXPORT_LIST
1619 add_to_list (&exports, initname);
1620 add_to_list (&exports, fininame);
1621 add_to_list (&exports, "_GLOBAL__DI");
1622 add_to_list (&exports, "_GLOBAL__DD");
1623 exportf = fopen (export_file, "w");
1624 if (exportf == (FILE *) 0)
1625 fatal_perror ("fopen %s", export_file);
1626 write_export_file (exportf);
1627 if (fclose (exportf))
1628 fatal_perror ("fclose %s", export_file);
1634 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
1635 output_file, c_file);
1636 write_c_file (stderr, "stderr");
1637 fprintf (stderr, "========== end of c_file\n\n");
1638 #ifdef COLLECT_EXPORT_LIST
1639 fprintf (stderr, "\n========== export_file = %s\n", export_file);
1640 write_export_file (stderr);
1641 fprintf (stderr, "========== end of export_file\n\n");
1645 /* Assemble the constructor and destructor tables.
1646 Link the tables in with the rest of the program. */
1648 fork_execute ("gcc", c_argv);
1649 #ifdef COLLECT_EXPORT_LIST
1650 /* On AIX we must call tlink because of possible templates resolution */
1651 do_tlink (ld2_argv, object_lst);
1653 /* Otherwise, simply call ld because tlink is already done */
1654 fork_execute ("ld", ld2_argv);
1656 /* Let scan_prog_file do any final mods (OSF/rose needs this for
1657 constructors/destructors in shared libraries. */
1658 scan_prog_file (output_file, PASS_SECOND);
1661 maybe_unlink (c_file);
1662 maybe_unlink (o_file);
1664 #ifdef COLLECT_EXPORT_LIST
1665 maybe_unlink (export_file);
1666 maybe_unlink (import_file);
1673 /* Wait for a process to finish, and exit if a non-zero status is found. */
1681 pwait (pexecute_pid, &status, 0);
1684 if (WIFSIGNALED (status))
1686 int sig = WTERMSIG (status);
1687 error ((status & 0200
1688 ? "%s terminated with signal %d [%s]"
1689 : "%s terminated with signal %d [%s], core dumped"),
1693 collect_exit (FATAL_EXIT_CODE);
1696 if (WIFEXITED (status))
1697 return WEXITSTATUS (status);
1706 int ret = collect_wait (prog);
1709 error ("%s returned %d exit status", prog, ret);
1715 /* Execute a program, and wait for the reply. */
1718 collect_execute (prog, argv, redir)
1725 int redir_handle = -1;
1726 int stdout_save = -1;
1727 int stderr_save = -1;
1735 fprintf (stderr, "%s", argv[0]);
1737 notice ("[cannot find %s]", prog);
1739 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
1740 fprintf (stderr, " %s", str);
1742 fprintf (stderr, "\n");
1748 /* If we cannot find a program we need, complain error. Do this here
1749 since we might not end up needing something that we could not find. */
1752 fatal ("cannot find `%s'", prog);
1756 /* Open response file. */
1757 redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT);
1759 /* Duplicate the stdout and stderr file handles
1760 so they can be restored later. */
1761 stdout_save = dup (STDOUT_FILENO);
1762 if (stdout_save == -1)
1763 fatal_perror ("redirecting stdout: %s", redir);
1764 stderr_save = dup (STDERR_FILENO);
1765 if (stderr_save == -1)
1766 fatal_perror ("redirecting stdout: %s", redir);
1768 /* Redirect stdout & stderr to our response file. */
1769 dup2 (redir_handle, STDOUT_FILENO);
1770 dup2 (redir_handle, STDERR_FILENO);
1773 pexecute_pid = pexecute (argv[0], argv, argv[0], NULL,
1774 &errmsg_fmt, &errmsg_arg,
1775 (PEXECUTE_FIRST | PEXECUTE_LAST | PEXECUTE_SEARCH));
1779 /* Restore stdout and stderr to their previous settings. */
1780 dup2 (stdout_save, STDOUT_FILENO);
1781 dup2 (stderr_save, STDERR_FILENO);
1783 /* Close reponse file. */
1784 close (redir_handle);
1787 if (pexecute_pid == -1)
1788 fatal_perror (errmsg_fmt, errmsg_arg);
1792 fork_execute (prog, argv)
1796 collect_execute (prog, argv, NULL);
1800 /* Unlink a file unless we are debugging. */
1809 notice ("[Leaving %s]\n", file);
1813 static long sequence_number = 0;
1815 /* Add a name to a linked list. */
1818 add_to_list (head_ptr, name)
1819 struct head *head_ptr;
1823 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
1825 strcpy (newid->name, name);
1827 if (head_ptr->first)
1828 head_ptr->last->next = newid;
1830 head_ptr->first = newid;
1832 /* Check for duplicate symbols. */
1833 for (p = head_ptr->first;
1834 strcmp (name, p->name) != 0;
1839 head_ptr->last->next = 0;
1844 newid->sequence = ++sequence_number;
1845 head_ptr->last = newid;
1849 /* Grab the init priority number from an init function name that
1850 looks like "_GLOBAL_.I.12345.foo". */
1853 extract_init_priority (name)
1858 while (name[pos] == '_')
1860 pos += 10; /* strlen ("GLOBAL__X_") */
1862 /* Extract init_p number from ctor/dtor name. */
1863 pri = atoi (name + pos);
1864 return pri ? pri : DEFAULT_INIT_PRIORITY;
1867 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
1868 ctors will be run from right to left, dtors from left to right. */
1872 struct head *head_ptr;
1874 /* id holds the current element to insert. id_next holds the next
1875 element to insert. id_ptr iterates through the already sorted elements
1876 looking for the place to insert id. */
1877 struct id *id, *id_next, **id_ptr;
1879 id = head_ptr->first;
1881 /* We don't have any sorted elements yet. */
1882 head_ptr->first = NULL;
1884 for (; id; id = id_next)
1887 id->sequence = extract_init_priority (id->name);
1889 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
1891 /* If the sequence numbers are the same, we put the id from the
1892 file later on the command line later in the list. */
1893 || id->sequence > (*id_ptr)->sequence
1894 /* Hack: do lexical compare, too.
1895 || (id->sequence == (*id_ptr)->sequence
1896 && strcmp (id->name, (*id_ptr)->name) > 0) */
1905 /* Now set the sequence numbers properly so write_c_file works. */
1906 for (id = head_ptr->first; id; id = id->next)
1907 id->sequence = ++sequence_number;
1910 /* Write: `prefix', the names on list LIST, `suffix'. */
1913 write_list (stream, prefix, list)
1920 fprintf (stream, "%sx%d,\n", prefix, list->sequence);
1925 #ifdef COLLECT_EXPORT_LIST
1926 /* This function is really used only on AIX, but may be useful. */
1928 is_in_list (prefix, list)
1934 if (!strcmp (prefix, list->name)) return 1;
1941 /* Added for debugging purpose. */
1942 #ifdef COLLECT_EXPORT_LIST
1944 dump_list (stream, prefix, list)
1951 fprintf (stream, "%s%s,\n", prefix, list->name);
1959 dump_prefix_list (stream, prefix, list)
1962 struct prefix_list *list;
1966 fprintf (stream, "%s%s,\n", prefix, list->prefix);
1973 write_list_with_asm (stream, prefix, list)
1980 fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
1981 prefix, list->sequence, list->name);
1986 /* Write out the constructor and destructor tables statically (for a shared
1987 object), along with the functions to execute them. */
1990 write_c_file_stat (stream, name)
1994 char *prefix, *p, *q;
1995 int frames = (frame_tables.number > 0);
1997 /* Figure out name of output_file, stripping off .so version. */
1998 p = rindex (output_file, '/');
2000 p = (char *) output_file;
2014 if (strncmp (q, ".so", 3) == 0)
2023 /* q points to null at end of the string (or . of the .so version) */
2024 prefix = xmalloc (q - p + 1);
2025 strncpy (prefix, p, q - p);
2027 for (q = prefix; *q; q++)
2028 if (!ISALNUM ((unsigned char)*q))
2031 notice ("\nwrite_c_file - output name is %s, prefix is %s\n",
2032 output_file, prefix);
2034 #define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
2035 initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
2036 sprintf (initname, INIT_NAME_FORMAT, prefix);
2038 #define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
2039 fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
2040 sprintf (fininame, FINI_NAME_FORMAT, prefix);
2044 /* Write the tables as C code */
2046 fprintf (stream, "static int count;\n");
2047 fprintf (stream, "typedef void entry_pt();\n");
2048 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
2052 write_list_with_asm (stream, "extern void *", frame_tables.first);
2054 fprintf (stream, "\tstatic void *frame_table[] = {\n");
2055 write_list (stream, "\t\t&", frame_tables.first);
2056 fprintf (stream, "\t0\n};\n");
2058 /* This must match what's in frame.h. */
2059 fprintf (stream, "struct object {\n");
2060 fprintf (stream, " void *pc_begin;\n");
2061 fprintf (stream, " void *pc_end;\n");
2062 fprintf (stream, " void *fde_begin;\n");
2063 fprintf (stream, " void *fde_array;\n");
2064 fprintf (stream, " __SIZE_TYPE__ count;\n");
2065 fprintf (stream, " struct object *next;\n");
2066 fprintf (stream, "};\n");
2068 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
2069 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
2071 fprintf (stream, "static void reg_frame () {\n");
2072 fprintf (stream, "\tstatic struct object ob;\n");
2073 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
2074 fprintf (stream, "\t}\n");
2076 fprintf (stream, "static void dereg_frame () {\n");
2077 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
2078 fprintf (stream, "\t}\n");
2081 fprintf (stream, "void %s() {\n", initname);
2082 if (constructors.number > 0 || frames)
2084 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
2085 write_list (stream, "\t\t", constructors.first);
2087 fprintf (stream, "\treg_frame,\n");
2088 fprintf (stream, "\t};\n");
2089 fprintf (stream, "\tentry_pt **p;\n");
2090 fprintf (stream, "\tif (count++ != 0) return;\n");
2091 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
2092 fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
2095 fprintf (stream, "\t++count;\n");
2096 fprintf (stream, "}\n");
2097 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2098 fprintf (stream, "void %s() {\n", fininame);
2099 if (destructors.number > 0 || frames)
2101 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
2102 write_list (stream, "\t\t", destructors.first);
2104 fprintf (stream, "\tdereg_frame,\n");
2105 fprintf (stream, "\t};\n");
2106 fprintf (stream, "\tentry_pt **p;\n");
2107 fprintf (stream, "\tif (--count != 0) return;\n");
2108 fprintf (stream, "\tp = dtors;\n");
2109 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
2110 destructors.number + frames);
2112 fprintf (stream, "}\n");
2116 fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
2117 fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
2121 /* Write the constructor/destructor tables. */
2123 #ifndef LD_INIT_SWITCH
2125 write_c_file_glob (stream, name)
2129 /* Write the tables as C code */
2131 int frames = (frame_tables.number > 0);
2133 fprintf (stream, "typedef void entry_pt();\n\n");
2135 write_list_with_asm (stream, "extern entry_pt ", constructors.first);
2139 write_list_with_asm (stream, "extern void *", frame_tables.first);
2141 fprintf (stream, "\tstatic void *frame_table[] = {\n");
2142 write_list (stream, "\t\t&", frame_tables.first);
2143 fprintf (stream, "\t0\n};\n");
2145 /* This must match what's in frame.h. */
2146 fprintf (stream, "struct object {\n");
2147 fprintf (stream, " void *pc_begin;\n");
2148 fprintf (stream, " void *pc_end;\n");
2149 fprintf (stream, " void *fde_begin;\n");
2150 fprintf (stream, " void *fde_array;\n");
2151 fprintf (stream, " __SIZE_TYPE__ count;\n");
2152 fprintf (stream, " struct object *next;\n");
2153 fprintf (stream, "};\n");
2155 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
2156 fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
2158 fprintf (stream, "static void reg_frame () {\n");
2159 fprintf (stream, "\tstatic struct object ob;\n");
2160 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
2161 fprintf (stream, "\t}\n");
2163 fprintf (stream, "static void dereg_frame () {\n");
2164 fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
2165 fprintf (stream, "\t}\n");
2168 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
2169 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
2170 write_list (stream, "\t", constructors.first);
2172 fprintf (stream, "\treg_frame,\n");
2173 fprintf (stream, "\t0\n};\n\n");
2175 write_list_with_asm (stream, "extern entry_pt ", destructors.first);
2177 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
2178 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
2179 write_list (stream, "\t", destructors.first);
2181 fprintf (stream, "\tdereg_frame,\n");
2182 fprintf (stream, "\t0\n};\n\n");
2184 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
2185 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
2187 #endif /* ! LD_INIT_SWITCH */
2190 write_c_file (stream, name)
2194 fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
2195 #ifndef LD_INIT_SWITCH
2197 write_c_file_glob (stream, name);
2200 write_c_file_stat (stream, name);
2201 fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
2204 #ifdef COLLECT_EXPORT_LIST
2206 write_export_file (stream)
2209 struct id *list = exports.first;
2210 for (; list; list = list->next)
2211 fprintf (stream, "%s\n", list->name);
2215 write_import_file (stream)
2218 struct id *list = imports.first;
2219 fprintf (stream, "%s\n", "#! .");
2220 for (; list; list = list->next)
2221 fprintf (stream, "%s\n", list->name);
2225 #ifdef OBJECT_FORMAT_NONE
2227 /* Generic version to scan the name list of the loaded program for
2228 the symbols g++ uses for static constructors and destructors.
2230 The constructor table begins at __CTOR_LIST__ and contains a count
2231 of the number of pointers (or -1 if the constructors are built in a
2232 separate section by the linker), followed by the pointers to the
2233 constructor functions, terminated with a null pointer. The
2234 destructor table has the same format, and begins at __DTOR_LIST__. */
2237 scan_prog_file (prog_name, which_pass)
2239 enum pass which_pass;
2241 void (*int_handler) ();
2242 void (*quit_handler) ();
2250 if (which_pass == PASS_SECOND)
2253 /* If we do not have an `nm', complain. */
2254 if (nm_file_name == 0)
2255 fatal ("cannot find `nm'");
2257 nm_argv[argc++] = nm_file_name;
2258 if (NM_FLAGS[0] != '\0')
2259 nm_argv[argc++] = NM_FLAGS;
2261 nm_argv[argc++] = prog_name;
2262 nm_argv[argc++] = (char *) 0;
2264 if (pipe (pipe_fd) < 0)
2265 fatal_perror ("pipe");
2267 inf = fdopen (pipe_fd[0], "r");
2268 if (inf == (FILE *) 0)
2269 fatal_perror ("fdopen");
2271 /* Trace if needed. */
2277 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2278 fprintf (stderr, " %s", str);
2280 fprintf (stderr, "\n");
2286 /* Spawn child nm on pipe */
2289 fatal_perror (VFORK_STRING);
2291 if (pid == 0) /* child context */
2294 if (dup2 (pipe_fd[1], 1) < 0)
2295 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2297 if (close (pipe_fd[0]) < 0)
2298 fatal_perror ("close %d", pipe_fd[0]);
2300 if (close (pipe_fd[1]) < 0)
2301 fatal_perror ("close %d", pipe_fd[1]);
2303 execv (nm_file_name, nm_argv);
2304 fatal_perror ("execvp %s", nm_file_name);
2307 /* Parent context from here on. */
2308 int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
2310 quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
2313 if (close (pipe_fd[1]) < 0)
2314 fatal_perror ("close %d", pipe_fd[1]);
2317 fprintf (stderr, "\nnm output with constructors/destructors.\n");
2319 /* Read each line of nm output. */
2320 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2325 /* If it contains a constructor or destructor name, add the name
2326 to the appropriate list. */
2328 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
2329 if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
2336 /* Find the end of the symbol name.
2337 Do not include `|', because Encore nm can tack that on the end. */
2338 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
2344 switch (is_ctor_dtor (name))
2347 if (which_pass != PASS_LIB)
2348 add_to_list (&constructors, name);
2352 if (which_pass != PASS_LIB)
2353 add_to_list (&destructors, name);
2357 if (which_pass != PASS_LIB)
2358 fatal ("init function found in object %s", prog_name);
2359 #ifndef LD_INIT_SWITCH
2360 add_to_list (&constructors, name);
2365 if (which_pass != PASS_LIB)
2366 fatal ("fini function found in object %s", prog_name);
2367 #ifndef LD_FINI_SWITCH
2368 add_to_list (&destructors, name);
2373 if (which_pass != PASS_LIB)
2374 add_to_list (&frame_tables, name);
2376 default: /* not a constructor or destructor */
2381 fprintf (stderr, "\t%s\n", buf);
2385 fprintf (stderr, "\n");
2387 if (fclose (inf) != 0)
2388 fatal_perror ("fclose");
2390 do_wait (nm_file_name);
2392 signal (SIGINT, int_handler);
2394 signal (SIGQUIT, quit_handler);
2398 #if SUNOS4_SHARED_LIBRARIES
2400 /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
2401 that the output file depends upon and their initialization/finalization
2402 routines, if any. */
2407 #include <sys/mman.h>
2408 #include <sys/param.h>
2410 #include <sys/dir.h>
2412 /* pointers to the object file */
2413 unsigned object; /* address of memory mapped file */
2414 unsigned objsize; /* size of memory mapped to file */
2415 char * code; /* pointer to code segment */
2416 char * data; /* pointer to data segment */
2417 struct nlist *symtab; /* pointer to symbol table */
2418 struct link_dynamic *ld;
2419 struct link_dynamic_2 *ld_2;
2420 struct head libraries;
2422 /* Map the file indicated by NAME into memory and store its address. */
2430 if ((fp = open (name, O_RDONLY)) == -1)
2431 fatal ("unable to open file '%s'", name);
2432 if (fstat (fp, &s) == -1)
2433 fatal ("unable to stat file '%s'", name);
2435 objsize = s.st_size;
2436 object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
2439 fatal ("unable to mmap file '%s'", name);
2444 /* Helpers for locatelib. */
2446 static char *libname;
2452 return (strncmp (libname, d->d_name, strlen (libname)) == 0);
2455 /* If one file has an additional numeric extension past LIBNAME, then put
2456 that one first in the sort. If both files have additional numeric
2457 extensions, then put the one with the higher number first in the sort.
2459 We must verify that the extension is numeric, because Sun saves the
2460 original versions of patched libraries with a .FCS extension. Files with
2461 invalid extensions must go last in the sort, so that they will not be used. */
2465 struct direct **d1, **d2;
2467 int i1, i2 = strlen (libname);
2468 char *e1 = (*d1)->d_name + i2;
2469 char *e2 = (*d2)->d_name + i2;
2471 while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
2472 && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
2476 i1 = strtol (e1, &e1, 10);
2477 i2 = strtol (e2, &e2, 10);
2484 /* It has a valid numeric extension, prefer this one. */
2485 if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
2487 /* It has a invalid numeric extension, must prefer the other one. */
2493 /* It has a valid numeric extension, prefer this one. */
2494 if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
2496 /* It has a invalid numeric extension, must prefer the other one. */
2504 /* Given the name NAME of a dynamic dependency, find its pathname and add
2505 it to the list of libraries. */
2513 char buf[MAXPATHLEN];
2521 /* counting elements in array, need 1 extra for null */
2523 ld_rules = (char *) (ld_2->ld_rules + code);
2527 for (; *ld_rules != 0; ld_rules++)
2528 if (*ld_rules == ':')
2530 ld_rules = (char *) (ld_2->ld_rules + code);
2531 ldr = (char *) malloc (strlen (ld_rules) + 1);
2532 strcpy (ldr, ld_rules);
2534 p = getenv ("LD_LIBRARY_PATH");
2539 for (q = p ; *q != 0; q++)
2542 q = (char *) malloc (strlen (p) + 1);
2545 l = (char **) malloc ((cnt + 3) * sizeof (char *));
2550 for (; *ldr != 0; ldr++)
2560 for (; *q != 0; q++)
2567 /* built in directories are /lib, /usr/lib, and /usr/local/lib */
2570 *pp++ = "/usr/local/lib";
2574 for (pp = l; *pp != 0 ; pp++)
2576 struct direct **namelist;
2578 if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
2580 sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
2581 add_to_list (&libraries, buf);
2583 fprintf (stderr, "%s\n", buf);
2590 notice ("not found\n");
2592 fatal ("dynamic dependency %s not found", name);
2596 /* Scan the _DYNAMIC structure of the output file to find shared libraries
2597 that it depends upon and any constructors or destructors they contain. */
2600 scan_libraries (prog_name)
2603 struct exec *header;
2605 struct link_object *lo;
2606 char buff[MAXPATHLEN];
2609 mapfile (prog_name);
2610 header = (struct exec *)object;
2611 if (N_BADMAG (*header))
2612 fatal ("bad magic number in file '%s'", prog_name);
2613 if (header->a_dynamic == 0)
2616 code = (char *) (N_TXTOFF (*header) + (long) header);
2617 data = (char *) (N_DATOFF (*header) + (long) header);
2618 symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
2620 if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
2623 ld = (struct link_dynamic *) (symtab->n_value + code);
2629 ld = (struct link_dynamic *) data;
2634 notice ("dynamic dependencies.\n");
2636 ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
2637 for (lo = (struct link_object *) ld_2->ld_need; lo;
2638 lo = (struct link_object *) lo->lo_next)
2641 lo = (struct link_object *) ((long) lo + code);
2642 name = (char *) (code + lo->lo_name);
2646 fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
2647 sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
2653 fprintf (stderr, "\t%s\n", name);
2654 add_to_list (&libraries, name);
2659 fprintf (stderr, "\n");
2661 /* now iterate through the library list adding their symbols to
2663 for (list = libraries.first; list; list = list->next)
2664 scan_prog_file (list->name, PASS_LIB);
2667 #else /* SUNOS4_SHARED_LIBRARIES */
2670 /* Use the List Dynamic Dependencies program to find shared libraries that
2671 the output file depends upon and their initialization/finalization
2672 routines, if any. */
2675 scan_libraries (prog_name)
2678 static struct head libraries; /* list of shared libraries found */
2680 void (*int_handler) ();
2681 void (*quit_handler) ();
2689 /* If we do not have an `ldd', complain. */
2690 if (ldd_file_name == 0)
2692 error ("cannot find `ldd'");
2696 ldd_argv[argc++] = ldd_file_name;
2697 ldd_argv[argc++] = prog_name;
2698 ldd_argv[argc++] = (char *) 0;
2700 if (pipe (pipe_fd) < 0)
2701 fatal_perror ("pipe");
2703 inf = fdopen (pipe_fd[0], "r");
2704 if (inf == (FILE *) 0)
2705 fatal_perror ("fdopen");
2707 /* Trace if needed. */
2713 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
2714 fprintf (stderr, " %s", str);
2716 fprintf (stderr, "\n");
2722 /* Spawn child ldd on pipe */
2725 fatal_perror (VFORK_STRING);
2727 if (pid == 0) /* child context */
2730 if (dup2 (pipe_fd[1], 1) < 0)
2731 fatal_perror ("dup2 %d 1", pipe_fd[1]);
2733 if (close (pipe_fd[0]) < 0)
2734 fatal_perror ("close %d", pipe_fd[0]);
2736 if (close (pipe_fd[1]) < 0)
2737 fatal_perror ("close %d", pipe_fd[1]);
2739 execv (ldd_file_name, ldd_argv);
2740 fatal_perror ("execv %s", ldd_file_name);
2743 /* Parent context from here on. */
2744 int_handler = (void (*) ()) signal (SIGINT, SIG_IGN);
2746 quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN);
2749 if (close (pipe_fd[1]) < 0)
2750 fatal_perror ("close %d", pipe_fd[1]);
2753 notice ("\nldd output with constructors/destructors.\n");
2755 /* Read each line of ldd output. */
2756 while (fgets (buf, sizeof buf, inf) != (char *) 0)
2759 char *name, *end, *p = buf;
2761 /* Extract names of libraries and add to list. */
2762 PARSE_LDD_OUTPUT (p);
2767 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
2768 fatal ("dynamic dependency %s not found", buf);
2770 /* Find the end of the symbol name. */
2772 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
2777 if (access (name, R_OK) == 0)
2778 add_to_list (&libraries, name);
2780 fatal ("unable to open dynamic dependency '%s'", buf);
2783 fprintf (stderr, "\t%s\n", buf);
2786 fprintf (stderr, "\n");
2788 if (fclose (inf) != 0)
2789 fatal_perror ("fclose");
2791 do_wait (ldd_file_name);
2793 signal (SIGINT, int_handler);
2795 signal (SIGQUIT, quit_handler);
2798 /* now iterate through the library list adding their symbols to
2800 for (list = libraries.first; list; list = list->next)
2801 scan_prog_file (list->name, PASS_LIB);
2804 #endif /* LDD_SUFFIX */
2805 #endif /* SUNOS4_SHARED_LIBRARIES */
2807 #endif /* OBJECT_FORMAT_NONE */
2811 * COFF specific stuff.
2814 #ifdef OBJECT_FORMAT_COFF
2816 #if defined(EXTENDED_COFF)
2817 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
2818 # define GCC_SYMENT SYMR
2819 # define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText)
2820 # define GCC_SYMINC(X) (1)
2821 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
2822 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
2824 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
2825 # define GCC_SYMENT SYMENT
2826 # define GCC_OK_SYMBOL(X) \
2827 (((X).n_sclass == C_EXT) && \
2828 ((X).n_scnum > N_UNDEF) && \
2829 (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \
2830 ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))
2831 # define GCC_UNDEF_SYMBOL(X) \
2832 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
2833 # define GCC_SYMINC(X) ((X).n_numaux+1)
2834 # define GCC_SYMZERO(X) 0
2835 # define GCC_CHECK_HDR(X) \
2836 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
2837 || (HEADER (X).f_magic == 0757 && aix64_flag))
2840 extern char *ldgetname ();
2842 /* COFF version to scan the name list of the loaded program for
2843 the symbols g++ uses for static constructors and destructors.
2845 The constructor table begins at __CTOR_LIST__ and contains a count
2846 of the number of pointers (or -1 if the constructors are built in a
2847 separate section by the linker), followed by the pointers to the
2848 constructor functions, terminated with a null pointer. The
2849 destructor table has the same format, and begins at __DTOR_LIST__. */
2852 scan_prog_file (prog_name, which_pass)
2854 enum pass which_pass;
2856 LDFILE *ldptr = NULL;
2857 int sym_index, sym_count;
2859 #ifdef COLLECT_EXPORT_LIST
2860 /* Should we generate an import list for given prog_name? */
2861 int import_flag = (which_pass == PASS_OBJ ? 0 : use_import_list (prog_name));
2864 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
2867 #ifdef COLLECT_EXPORT_LIST
2868 /* We do not need scanning for some standard C libraries. */
2869 if (which_pass == PASS_FIRST && ignore_library (prog_name))
2872 /* On AIX we have a loop, because there is not much difference
2873 between an object and an archive. This trick allows us to
2874 eliminate scan_libraries() function. */
2878 if ((ldptr = ldopen (prog_name, ldptr)) != NULL)
2880 if (! MY_ISCOFF (HEADER (ldptr).f_magic))
2881 fatal ("%s: not a COFF file", prog_name);
2883 if (GCC_CHECK_HDR (ldptr))
2885 sym_count = GCC_SYMBOLS (ldptr);
2886 sym_index = GCC_SYMZERO (ldptr);
2888 #ifdef COLLECT_EXPORT_LIST
2889 /* Is current archive member a shared object? */
2890 is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
2893 while (sym_index < sym_count)
2897 if (ldtbread (ldptr, sym_index, &symbol) <= 0)
2899 sym_index += GCC_SYMINC (symbol);
2901 if (GCC_OK_SYMBOL (symbol))
2905 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2906 continue; /* should never happen */
2908 #ifdef XCOFF_DEBUGGING_INFO
2909 /* All AIX function names have a duplicate entry
2910 beginning with a dot. */
2915 switch (is_ctor_dtor (name))
2918 if (! is_shared) add_to_list (&constructors, name);
2919 #ifdef COLLECT_EXPORT_LIST
2920 if (which_pass == PASS_OBJ)
2921 add_to_list (&exports, name);
2922 /* If this symbol was undefined and we are building
2923 an import list, we should add a symbol to this
2927 && is_in_list (name, undefined.first))
2928 add_to_list (&imports, name);
2933 if (! is_shared) add_to_list (&destructors, name);
2934 #ifdef COLLECT_EXPORT_LIST
2935 if (which_pass == PASS_OBJ)
2936 add_to_list (&exports, name);
2937 /* If this symbol was undefined and we are building
2938 an import list, we should add a symbol to this
2942 && is_in_list (name, undefined.first))
2943 add_to_list (&imports, name);
2947 #ifdef COLLECT_EXPORT_LIST
2950 add_to_list (&constructors, name);
2955 add_to_list (&destructors, name);
2959 default: /* not a constructor or destructor */
2960 #ifdef COLLECT_EXPORT_LIST
2961 /* If we are building a shared object on AIX we need
2962 to explicitly export all global symbols or add
2963 them to import list. */
2966 if (which_pass == PASS_OBJ && (! export_flag))
2967 add_to_list (&exports, name);
2968 else if (! is_shared && which_pass == PASS_FIRST
2970 && is_in_list(name, undefined.first))
2971 add_to_list (&imports, name);
2977 #if !defined(EXTENDED_COFF)
2979 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
2980 symbol.n_scnum, symbol.n_sclass,
2981 (symbol.n_type ? "0" : ""), symbol.n_type,
2986 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
2987 symbol.iss, (long) symbol.value, symbol.index, name);
2990 #ifdef COLLECT_EXPORT_LIST
2991 /* If we are building a shared object we should collect
2992 information about undefined symbols for later
2993 import list generation. */
2994 else if (shared_obj && GCC_UNDEF_SYMBOL (symbol))
2998 if ((name = ldgetname (ldptr, &symbol)) == NULL)
2999 continue; /* should never happen */
3001 /* All AIX function names have a duplicate entry
3002 beginning with a dot. */
3005 add_to_list (&undefined, name);
3010 #ifdef COLLECT_EXPORT_LIST
3013 /* If archive contains both 32-bit and 64-bit objects,
3014 we want to skip objects in other mode so mismatch normal. */
3016 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
3017 prog_name, HEADER (ldptr).f_magic, aix64_flag);
3023 fatal ("%s: cannot open as COFF file", prog_name);
3025 #ifdef COLLECT_EXPORT_LIST
3026 /* On AIX loop continues while there are more members in archive. */
3028 while (ldclose (ldptr) == FAILURE);
3030 /* Otherwise we simply close ldptr. */
3031 (void) ldclose(ldptr);
3036 #ifdef COLLECT_EXPORT_LIST
3038 /* This new function is used to decide whether we should
3039 generate import list for an object or to use it directly. */
3041 use_import_list (prog_name)
3046 /* If we do not build a shared object then import list should not be used. */
3047 if (! shared_obj) return 0;
3049 /* Currently we check only for libgcc, but this can be changed in future. */
3050 p = strstr (prog_name, "libgcc.a");
3051 if (p != 0 && (strlen (p) == sizeof ("libgcc.a") - 1))
3056 /* Given a library name without "lib" prefix, this function
3057 returns a full library name including a path. */
3059 resolve_lib_name (name)
3065 for (i = 0; libpaths[i]; i++)
3066 if (libpaths[i]->max_len > l)
3067 l = libpaths[i]->max_len;
3069 lib_buf = xmalloc (l + strlen(name) + 10);
3071 for (i = 0; libpaths[i]; i++)
3073 struct prefix_list *list = libpaths[i]->plist;
3074 for (; list; list = list->next)
3076 for (j = 0; libexts[j]; j++)
3078 /* The following lines are needed because path_prefix list
3079 may contain directories both with trailing '/' and
3082 if (list->prefix[strlen(list->prefix)-1] != '/')
3084 sprintf (lib_buf, "%s%slib%s.%s",
3085 list->prefix, p, name, libexts[j]);
3086 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
3087 if (file_exists (lib_buf))
3089 if (debug) fprintf (stderr, "found: %s\n", lib_buf);
3096 fprintf (stderr, "not found\n");
3098 fatal ("Library lib%s not found", name);
3102 /* Array of standard AIX libraries which should not
3103 be scanned for ctors/dtors. */
3104 static char* aix_std_libs[] = {
3109 "/usr/lib/libc_r.a",
3110 "/usr/lib/threads/libc.a",
3111 "/usr/ccs/lib/libc.a",
3112 "/usr/ccs/lib/libc_r.a",
3116 /* This function checks the filename and returns 1
3117 if this name matches the location of a standard AIX library. */
3119 ignore_library (name)
3122 char **p = &aix_std_libs[0];
3123 while (*p++ != NULL)
3124 if (! strcmp (name, *p)) return 1;
3130 #endif /* OBJECT_FORMAT_COFF */
3134 * OSF/rose specific stuff.
3137 #ifdef OBJECT_FORMAT_ROSE
3139 /* Union of the various load commands */
3141 typedef union load_union
3143 ldc_header_t hdr; /* common header */
3144 load_cmd_map_command_t map; /* map indexing other load cmds */
3145 interpreter_command_t iprtr; /* interpreter pathname */
3146 strings_command_t str; /* load commands strings section */
3147 region_command_t region; /* region load command */
3148 reloc_command_t reloc; /* relocation section */
3149 package_command_t pkg; /* package load command */
3150 symbols_command_t sym; /* symbol sections */
3151 entry_command_t ent; /* program start section */
3152 gen_info_command_t info; /* object information */
3153 func_table_command_t func; /* function constructors/destructors */
3156 /* Structure to point to load command and data section in memory. */
3158 typedef struct load_all
3160 load_union_t *load; /* load command */
3161 char *section; /* pointer to section */
3164 /* Structure to contain information about a file mapped into memory. */
3168 char *start; /* start of map */
3169 char *name; /* filename */
3170 long size; /* size of the file */
3171 long rounded_size; /* size rounded to page boundary */
3172 int fd; /* file descriptor */
3173 int rw; /* != 0 if opened read/write */
3174 int use_mmap; /* != 0 if mmap'ed */
3177 extern int decode_mach_o_hdr ();
3178 extern int encode_mach_o_hdr ();
3180 static void add_func_table PROTO((mo_header_t *, load_all_t *,
3181 symbol_info_t *, int));
3182 static void print_header PROTO((mo_header_t *));
3183 static void print_load_command PROTO((load_union_t *, size_t, int));
3184 static void bad_header PROTO((int));
3185 static struct file_info *read_file PROTO((char *, int, int));
3186 static void end_file PROTO((struct file_info *));
3188 /* OSF/rose specific version to scan the name list of the loaded
3189 program for the symbols g++ uses for static constructors and
3192 The constructor table begins at __CTOR_LIST__ and contains a count
3193 of the number of pointers (or -1 if the constructors are built in a
3194 separate section by the linker), followed by the pointers to the
3195 constructor functions, terminated with a null pointer. The
3196 destructor table has the same format, and begins at __DTOR_LIST__. */
3199 scan_prog_file (prog_name, which_pass)
3201 enum pass which_pass;
3205 load_all_t *load_array;
3206 load_all_t *load_end;
3207 load_all_t *load_cmd;
3208 int symbol_load_cmds;
3214 struct file_info *obj_file;
3216 mo_lcid_t cmd_strings = -1;
3217 symbol_info_t *main_sym = 0;
3218 int rw = (which_pass != PASS_FIRST);
3220 prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
3222 fatal_perror ("open %s", prog_name);
3224 obj_file = read_file (prog_name, prog_fd, rw);
3225 obj = obj_file->start;
3227 status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
3228 if (status != MO_HDR_CONV_SUCCESS)
3229 bad_header (status);
3232 /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
3233 since the hardware will automatically swap bytes for us on loading little endian
3236 #ifndef CROSS_COMPILE
3237 if (hdr.moh_magic != MOH_MAGIC_MSB
3238 || hdr.moh_header_version != MOH_HEADER_VERSION
3239 || hdr.moh_byte_order != OUR_BYTE_ORDER
3240 || hdr.moh_data_rep_id != OUR_DATA_REP_ID
3241 || hdr.moh_cpu_type != OUR_CPU_TYPE
3242 || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
3243 || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
3245 fatal ("incompatibilities between object file & expected values");
3250 print_header (&hdr);
3252 offset = hdr.moh_first_cmd_off;
3253 load_end = load_array
3254 = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
3256 /* Build array of load commands, calculating the offsets */
3257 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3259 load_union_t *load_hdr; /* load command header */
3261 load_cmd = load_end++;
3262 load_hdr = (load_union_t *) (obj + offset);
3264 /* If modifying the program file, copy the header. */
3267 load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
3268 bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
3271 /* null out old command map, because we will rewrite at the end. */
3272 if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
3274 cmd_strings = ptr->map.lcm_ld_cmd_strings;
3275 ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
3279 load_cmd->load = load_hdr;
3280 if (load_hdr->hdr.ldci_section_off > 0)
3281 load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
3284 print_load_command (load_hdr, offset, i);
3286 offset += load_hdr->hdr.ldci_cmd_size;
3289 /* If the last command is the load command map and is not undefined,
3290 decrement the count of load commands. */
3291 if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
3294 hdr.moh_n_load_cmds--;
3297 /* Go through and process each symbol table section. */
3298 symbol_load_cmds = 0;
3299 for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
3301 load_union_t *load_hdr = load_cmd->load;
3303 if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
3309 char *kind = "unknown";
3311 switch (load_hdr->sym.symc_kind)
3313 case SYMC_IMPORTS: kind = "imports"; break;
3314 case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
3315 case SYMC_STABS: kind = "stabs"; break;
3318 notice ("\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
3319 symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
3322 if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
3325 str_sect = load_array[load_hdr->sym.symc_strings_section].section;
3326 if (str_sect == (char *) 0)
3327 fatal ("string section missing");
3329 if (load_cmd->section == (char *) 0)
3330 fatal ("section pointer missing");
3332 num_syms = load_hdr->sym.symc_nentries;
3333 for (i = 0; i < num_syms; i++)
3335 symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
3336 char *name = sym->si_name.symbol_name + str_sect;
3343 char *n = name + strlen (name) - strlen (NAME__MAIN);
3345 if ((n - name) < 0 || strcmp (n, NAME__MAIN))
3355 switch (is_ctor_dtor (name))
3358 add_to_list (&constructors, name);
3362 add_to_list (&destructors, name);
3365 default: /* not a constructor or destructor */
3371 fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
3372 sym->si_type, sym->si_sc_type, sym->si_flags, name);
3377 if (symbol_load_cmds == 0)
3378 fatal ("no symbol table found");
3380 /* Update the program file now, rewrite header and load commands. At present,
3381 we assume that there is enough space after the last load command to insert
3382 one more. Since the first section written out is page aligned, and the
3383 number of load commands is small, this is ok for the present. */
3387 load_union_t *load_map;
3390 if (cmd_strings == -1)
3391 fatal ("no cmd_strings found");
3393 /* Add __main to initializer list.
3394 If we are building a program instead of a shared library, do not
3395 do anything, since in the current version, you cannot do mallocs
3396 and such in the constructors. */
3398 if (main_sym != (symbol_info_t *) 0
3399 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
3400 add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
3403 notice ("\nUpdating header and load commands.\n\n");
3405 hdr.moh_n_load_cmds++;
3406 size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
3408 /* Create new load command map. */
3410 notice ("load command map, %d cmds, new size %ld.\n",
3411 (int) hdr.moh_n_load_cmds, (long) size);
3413 load_map = (load_union_t *) xcalloc (1, size);
3414 load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
3415 load_map->map.ldc_header.ldci_cmd_size = size;
3416 load_map->map.lcm_ld_cmd_strings = cmd_strings;
3417 load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
3418 load_array[hdr.moh_n_load_cmds-1].load = load_map;
3420 offset = hdr.moh_first_cmd_off;
3421 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3423 load_map->map.lcm_map[i] = offset;
3424 if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
3425 hdr.moh_load_map_cmd_off = offset;
3427 offset += load_array[i].load->hdr.ldci_cmd_size;
3430 hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
3433 print_header (&hdr);
3436 status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
3437 if (status != MO_HDR_CONV_SUCCESS)
3438 bad_header (status);
3441 notice ("writing load commands.\n\n");
3443 /* Write load commands */
3444 offset = hdr.moh_first_cmd_off;
3445 for (i = 0; i < hdr.moh_n_load_cmds; i++)
3447 load_union_t *load_hdr = load_array[i].load;
3448 size_t size = load_hdr->hdr.ldci_cmd_size;
3451 print_load_command (load_hdr, offset, i);
3453 bcopy ((char *) load_hdr, (char *) (obj + offset), size);
3458 end_file (obj_file);
3460 if (close (prog_fd))
3461 fatal_perror ("close %s", prog_name);
3464 fprintf (stderr, "\n");
3468 /* Add a function table to the load commands to call a function
3469 on initiation or termination of the process. */
3472 add_func_table (hdr_p, load_array, sym, type)
3473 mo_header_t *hdr_p; /* pointer to global header */
3474 load_all_t *load_array; /* array of ptrs to load cmds */
3475 symbol_info_t *sym; /* pointer to symbol entry */
3476 int type; /* fntc_type value */
3478 /* Add a new load command. */
3479 int num_cmds = ++hdr_p->moh_n_load_cmds;
3480 int load_index = num_cmds - 1;
3481 size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
3482 load_union_t *ptr = xcalloc (1, size);
3483 load_all_t *load_cmd;
3486 /* Set the unresolved address bit in the header to force the loader to be
3487 used, since kernel exec does not call the initialization functions. */
3488 hdr_p->moh_flags |= MOH_UNRESOLVED_F;
3490 load_cmd = &load_array[load_index];
3491 load_cmd->load = ptr;
3492 load_cmd->section = (char *) 0;
3494 /* Fill in func table load command. */
3495 ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
3496 ptr->func.ldc_header.ldci_cmd_size = size;
3497 ptr->func.ldc_header.ldci_section_off = 0;
3498 ptr->func.ldc_header.ldci_section_len = 0;
3499 ptr->func.fntc_type = type;
3500 ptr->func.fntc_nentries = 1;
3502 /* copy address, turn it from abs. address to (region,offset) if necessary. */
3503 /* Is the symbol already expressed as (region, offset)? */
3504 if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
3506 ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
3507 ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
3510 /* If not, figure out which region it's in. */
3513 mo_vm_addr_t addr = sym->si_value.abs_val;
3516 for (i = 0; i < load_index; i++)
3518 if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
3520 region_command_t *region_ptr = &load_array[i].load->region;
3522 if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
3523 && addr >= region_ptr->regc_addr.vm_addr
3524 && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
3526 ptr->func.fntc_entry_loc[0].adr_lcid = i;
3527 ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
3535 fatal ("could not convert 0x%l.8x into a region", addr);
3539 notice ("%s function, region %d, offset = %ld (0x%.8lx)\n",
3540 type == FNTC_INITIALIZATION ? "init" : "term",
3541 (int) ptr->func.fntc_entry_loc[i].adr_lcid,
3542 (long) ptr->func.fntc_entry_loc[i].adr_sctoff,
3543 (long) ptr->func.fntc_entry_loc[i].adr_sctoff);
3548 /* Print the global header for an OSF/rose object. */
3551 print_header (hdr_ptr)
3552 mo_header_t *hdr_ptr;
3554 fprintf (stderr, "\nglobal header:\n");
3555 fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
3556 fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
3557 fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
3558 fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
3559 fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
3560 fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
3561 fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
3562 fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
3563 fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
3564 fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
3565 fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
3566 fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
3567 fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
3568 fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
3569 fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
3571 if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
3572 fprintf (stderr, ", relocatable");
3574 if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
3575 fprintf (stderr, ", linkable");
3577 if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
3578 fprintf (stderr, ", execable");
3580 if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
3581 fprintf (stderr, ", executable");
3583 if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
3584 fprintf (stderr, ", unresolved");
3586 fprintf (stderr, "\n\n");
3591 /* Print a short summary of a load command. */
3594 print_load_command (load_hdr, offset, number)
3595 load_union_t *load_hdr;
3599 mo_long_t type = load_hdr->hdr.ldci_cmd_type;
3600 char *type_str = (char *) 0;
3604 case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
3605 case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
3606 case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
3607 case LDC_STRINGS: type_str = "STRINGS"; break;
3608 case LDC_REGION: type_str = "REGION"; break;
3609 case LDC_RELOC: type_str = "RELOC"; break;
3610 case LDC_PACKAGE: type_str = "PACKAGE"; break;
3611 case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
3612 case LDC_ENTRY: type_str = "ENTRY"; break;
3613 case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
3614 case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
3618 "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
3620 (long) load_hdr->hdr.ldci_cmd_size,
3622 (long) load_hdr->hdr.ldci_section_off,
3623 (long) load_hdr->hdr.ldci_section_len);
3625 if (type_str == (char *) 0)
3626 fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
3628 else if (type != LDC_REGION)
3629 fprintf (stderr, ", ty: %s\n", type_str);
3634 switch (load_hdr->region.regc_usage_type)
3636 case REG_TEXT_T: region = ", .text"; break;
3637 case REG_DATA_T: region = ", .data"; break;
3638 case REG_BSS_T: region = ", .bss"; break;
3639 case REG_GLUE_T: region = ", .glue"; break;
3640 #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
3641 case REG_RDATA_T: region = ", .rdata"; break;
3642 case REG_SDATA_T: region = ", .sdata"; break;
3643 case REG_SBSS_T: region = ", .sbss"; break;
3647 fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
3649 (long) load_hdr->region.regc_vm_addr,
3650 (long) load_hdr->region.regc_vm_size,
3658 /* Fatal error when {en,de}code_mach_o_header fails. */
3666 case MO_ERROR_BAD_MAGIC: fatal ("bad magic number");
3667 case MO_ERROR_BAD_HDR_VERS: fatal ("bad header version");
3668 case MO_ERROR_BAD_RAW_HDR_VERS: fatal ("bad raw header version");
3669 case MO_ERROR_BUF2SML: fatal ("raw header buffer too small");
3670 case MO_ERROR_OLD_RAW_HDR_FILE: fatal ("old raw header file");
3671 case MO_ERROR_UNSUPPORTED_VERS: fatal ("unsupported version");
3673 fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
3678 /* Read a file into a memory buffer. */
3680 static struct file_info *
3681 read_file (name, fd, rw)
3682 char *name; /* filename */
3683 int fd; /* file descriptor */
3684 int rw; /* read/write */
3686 struct stat stat_pkt;
3687 struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
3689 static int page_size;
3692 if (fstat (fd, &stat_pkt) < 0)
3693 fatal_perror ("fstat %s", name);
3696 p->size = stat_pkt.st_size;
3697 p->rounded_size = stat_pkt.st_size;
3703 fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
3706 page_size = sysconf (_SC_PAGE_SIZE);
3708 p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
3709 p->start = mmap ((caddr_t) 0,
3710 (rw) ? p->rounded_size : p->size,
3711 (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
3712 MAP_FILE | MAP_VARIABLE | MAP_SHARED,
3716 if (p->start != (char *) 0 && p->start != (char *) -1)
3720 #endif /* USE_MMAP */
3725 fprintf (stderr, "read %s\n", name);
3728 p->start = xmalloc (p->size);
3729 if (lseek (fd, 0L, SEEK_SET) < 0)
3730 fatal_perror ("lseek %s 0", name);
3732 len = read (fd, p->start, p->size);
3734 fatal_perror ("read %s", name);
3737 fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
3743 /* Do anything necessary to write a file back from memory. */
3747 struct file_info *ptr; /* file information block */
3755 fprintf (stderr, "msync %s\n", ptr->name);
3757 if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
3758 fatal_perror ("msync %s", ptr->name);
3762 fprintf (stderr, "munmap %s\n", ptr->name);
3764 if (munmap (ptr->start, ptr->size))
3765 fatal_perror ("munmap %s", ptr->name);
3768 #endif /* USE_MMAP */
3775 fprintf (stderr, "write %s\n", ptr->name);
3777 if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
3778 fatal_perror ("lseek %s 0", ptr->name);
3780 len = write (ptr->fd, ptr->start, ptr->size);
3782 fatal_perror ("write %s", ptr->name);
3784 if (len != ptr->size)
3785 fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
3794 #endif /* OBJECT_FORMAT_ROSE */