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-rw-r--r--gcc-4.2.1/gcc/collect2.c2588
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diff --git a/gcc-4.2.1/gcc/collect2.c b/gcc-4.2.1/gcc/collect2.c
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index 000000000..02edde835
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+++ b/gcc-4.2.1/gcc/collect2.c
@@ -0,0 +1,2588 @@
+/* Collect static initialization info into data structures that can be
+ traversed by C++ initialization and finalization routines.
+ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Contributed by Chris Smith (csmith@convex.com).
+ Heavily modified by Michael Meissner (meissner@cygnus.com),
+ Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com).
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
+
+
+/* Build tables of static constructors and destructors and run ld. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include <signal.h>
+#if ! defined( SIGCHLD ) && defined( SIGCLD )
+# define SIGCHLD SIGCLD
+#endif
+
+#ifndef LIBRARY_PATH_ENV
+#define LIBRARY_PATH_ENV "LIBRARY_PATH"
+#endif
+
+#define COLLECT
+
+#include "collect2.h"
+#include "demangle.h"
+#include "obstack.h"
+#include "intl.h"
+#include "version.h"
+
+/* On certain systems, we have code that works by scanning the object file
+ directly. But this code uses system-specific header files and library
+ functions, so turn it off in a cross-compiler. Likewise, the names of
+ the utilities are not correct for a cross-compiler; we have to hope that
+ cross-versions are in the proper directories. */
+
+#ifdef CROSS_COMPILE
+#undef OBJECT_FORMAT_COFF
+#undef MD_EXEC_PREFIX
+#undef REAL_LD_FILE_NAME
+#undef REAL_NM_FILE_NAME
+#undef REAL_STRIP_FILE_NAME
+#endif
+
+/* If we cannot use a special method, use the ordinary one:
+ run nm to find what symbols are present.
+ In a cross-compiler, this means you need a cross nm,
+ but that is not quite as unpleasant as special headers. */
+
+#if !defined (OBJECT_FORMAT_COFF)
+#define OBJECT_FORMAT_NONE
+#endif
+
+#ifdef OBJECT_FORMAT_COFF
+
+#include <a.out.h>
+#include <ar.h>
+
+#ifdef UMAX
+#include <sgs.h>
+#endif
+
+/* Many versions of ldfcn.h define these. */
+#ifdef FREAD
+#undef FREAD
+#undef FWRITE
+#endif
+
+#include <ldfcn.h>
+
+/* Some systems have an ISCOFF macro, but others do not. In some cases
+ the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
+ that either do not have an ISCOFF macro in /usr/include or for those
+ where it is wrong. */
+
+#ifndef MY_ISCOFF
+#define MY_ISCOFF(X) ISCOFF (X)
+#endif
+
+#endif /* OBJECT_FORMAT_COFF */
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Default flags to pass to nm. */
+#ifndef NM_FLAGS
+#define NM_FLAGS "-n"
+#endif
+
+#endif /* OBJECT_FORMAT_NONE */
+
+/* Some systems use __main in a way incompatible with its use in gcc, in these
+ cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
+ give the same symbol without quotes for an alternative entry point. */
+#ifndef NAME__MAIN
+#define NAME__MAIN "__main"
+#endif
+
+/* This must match tree.h. */
+#define DEFAULT_INIT_PRIORITY 65535
+
+#ifndef COLLECT_SHARED_INIT_FUNC
+#define COLLECT_SHARED_INIT_FUNC(STREAM, FUNC) \
+ fprintf ((STREAM), "void _GLOBAL__DI() {\n\t%s();\n}\n", (FUNC))
+#endif
+#ifndef COLLECT_SHARED_FINI_FUNC
+#define COLLECT_SHARED_FINI_FUNC(STREAM, FUNC) \
+ fprintf ((STREAM), "void _GLOBAL__DD() {\n\t%s();\n}\n", (FUNC))
+#endif
+
+#ifdef LDD_SUFFIX
+#define SCAN_LIBRARIES
+#endif
+
+#ifdef USE_COLLECT2
+int do_collecting = 1;
+#else
+int do_collecting = 0;
+#endif
+
+/* Nonzero if we should suppress the automatic demangling of identifiers
+ in linker error messages. Set from COLLECT_NO_DEMANGLE. */
+int no_demangle;
+
+/* Linked lists of constructor and destructor names. */
+
+struct id
+{
+ struct id *next;
+ int sequence;
+ char name[1];
+};
+
+struct head
+{
+ struct id *first;
+ struct id *last;
+ int number;
+};
+
+/* Enumeration giving which pass this is for scanning the program file. */
+
+enum pass {
+ PASS_FIRST, /* without constructors */
+ PASS_OBJ, /* individual objects */
+ PASS_LIB, /* looking for shared libraries */
+ PASS_SECOND /* with constructors linked in */
+};
+
+int vflag; /* true if -v */
+static int rflag; /* true if -r */
+static int strip_flag; /* true if -s */
+static const char *demangle_flag;
+#ifdef COLLECT_EXPORT_LIST
+static int export_flag; /* true if -bE */
+static int aix64_flag; /* true if -b64 */
+static int aixrtl_flag; /* true if -brtl */
+#endif
+
+int debug; /* true if -debug */
+
+static int shared_obj; /* true if -shared */
+
+static const char *c_file; /* <xxx>.c for constructor/destructor list. */
+static const char *o_file; /* <xxx>.o for constructor/destructor list. */
+#ifdef COLLECT_EXPORT_LIST
+static const char *export_file; /* <xxx>.x for AIX export list. */
+#endif
+const char *ldout; /* File for ld stdout. */
+const char *lderrout; /* File for ld stderr. */
+static const char *output_file; /* Output file for ld. */
+static const char *nm_file_name; /* pathname of nm */
+#ifdef LDD_SUFFIX
+static const char *ldd_file_name; /* pathname of ldd (or equivalent) */
+#endif
+static const char *strip_file_name; /* pathname of strip */
+const char *c_file_name; /* pathname of gcc */
+static char *initname, *fininame; /* names of init and fini funcs */
+
+static struct head constructors; /* list of constructors found */
+static struct head destructors; /* list of destructors found */
+#ifdef COLLECT_EXPORT_LIST
+static struct head exports; /* list of exported symbols */
+#endif
+static struct head frame_tables; /* list of frame unwind info tables */
+
+struct obstack temporary_obstack;
+char * temporary_firstobj;
+
+/* Structure to hold all the directories in which to search for files to
+ execute. */
+
+struct prefix_list
+{
+ const char *prefix; /* String to prepend to the path. */
+ struct prefix_list *next; /* Next in linked list. */
+};
+
+struct path_prefix
+{
+ struct prefix_list *plist; /* List of prefixes to try */
+ int max_len; /* Max length of a prefix in PLIST */
+ const char *name; /* Name of this list (used in config stuff) */
+};
+
+#ifdef COLLECT_EXPORT_LIST
+/* Lists to keep libraries to be scanned for global constructors/destructors. */
+static struct head libs; /* list of libraries */
+static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */
+static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */
+static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs,
+ &libpath_lib_dirs, NULL};
+#endif
+
+static void handler (int);
+static int is_ctor_dtor (const char *);
+static char *find_a_file (struct path_prefix *, const char *);
+static void add_prefix (struct path_prefix *, const char *);
+static void prefix_from_env (const char *, struct path_prefix *);
+static void prefix_from_string (const char *, struct path_prefix *);
+static void do_wait (const char *, struct pex_obj *);
+static void fork_execute (const char *, char **);
+static void maybe_unlink (const char *);
+static void add_to_list (struct head *, const char *);
+static int extract_init_priority (const char *);
+static void sort_ids (struct head *);
+static void write_list (FILE *, const char *, struct id *);
+#ifdef COLLECT_EXPORT_LIST
+static void dump_list (FILE *, const char *, struct id *);
+#endif
+#if 0
+static void dump_prefix_list (FILE *, const char *, struct prefix_list *);
+#endif
+static void write_list_with_asm (FILE *, const char *, struct id *);
+static void write_c_file (FILE *, const char *);
+static void write_c_file_stat (FILE *, const char *);
+#ifndef LD_INIT_SWITCH
+static void write_c_file_glob (FILE *, const char *);
+#endif
+static void scan_prog_file (const char *, enum pass);
+#ifdef SCAN_LIBRARIES
+static void scan_libraries (const char *);
+#endif
+#if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
+static int is_in_args (const char *, const char **, const char **);
+#endif
+#ifdef COLLECT_EXPORT_LIST
+#if 0
+static int is_in_list (const char *, struct id *);
+#endif
+static void write_aix_file (FILE *, struct id *);
+static char *resolve_lib_name (const char *);
+#endif
+static char *extract_string (const char **);
+
+/* Delete tempfiles and exit function. */
+
+void
+collect_exit (int status)
+{
+ if (c_file != 0 && c_file[0])
+ maybe_unlink (c_file);
+
+ if (o_file != 0 && o_file[0])
+ maybe_unlink (o_file);
+
+#ifdef COLLECT_EXPORT_LIST
+ if (export_file != 0 && export_file[0])
+ maybe_unlink (export_file);
+#endif
+
+ if (ldout != 0 && ldout[0])
+ {
+ dump_file (ldout, stdout);
+ maybe_unlink (ldout);
+ }
+
+ if (lderrout != 0 && lderrout[0])
+ {
+ dump_file (lderrout, stderr);
+ maybe_unlink (lderrout);
+ }
+
+ if (status != 0 && output_file != 0 && output_file[0])
+ maybe_unlink (output_file);
+
+ exit (status);
+}
+
+
+/* Notify user of a non-error. */
+void
+notice (const char *cmsgid, ...)
+{
+ va_list ap;
+
+ va_start (ap, cmsgid);
+ vfprintf (stderr, _(cmsgid), ap);
+ va_end (ap);
+}
+
+/* Die when sys call fails. */
+
+void
+fatal_perror (const char * cmsgid, ...)
+{
+ int e = errno;
+ va_list ap;
+
+ va_start (ap, cmsgid);
+ fprintf (stderr, "collect2: ");
+ vfprintf (stderr, _(cmsgid), ap);
+ fprintf (stderr, ": %s\n", xstrerror (e));
+ va_end (ap);
+
+ collect_exit (FATAL_EXIT_CODE);
+}
+
+/* Just die. */
+
+void
+fatal (const char * cmsgid, ...)
+{
+ va_list ap;
+
+ va_start (ap, cmsgid);
+ fprintf (stderr, "collect2: ");
+ vfprintf (stderr, _(cmsgid), ap);
+ fprintf (stderr, "\n");
+ va_end (ap);
+
+ collect_exit (FATAL_EXIT_CODE);
+}
+
+/* Write error message. */
+
+void
+error (const char * gmsgid, ...)
+{
+ va_list ap;
+
+ va_start (ap, gmsgid);
+ fprintf (stderr, "collect2: ");
+ vfprintf (stderr, _(gmsgid), ap);
+ fprintf (stderr, "\n");
+ va_end(ap);
+}
+
+/* In case obstack is linked in, and abort is defined to fancy_abort,
+ provide a default entry. */
+
+void
+fancy_abort (const char *file, int line, const char *func)
+{
+ fatal ("internal gcc abort in %s, at %s:%d", func, file, line);
+}
+
+static void
+handler (int signo)
+{
+ if (c_file != 0 && c_file[0])
+ maybe_unlink (c_file);
+
+ if (o_file != 0 && o_file[0])
+ maybe_unlink (o_file);
+
+ if (ldout != 0 && ldout[0])
+ maybe_unlink (ldout);
+
+ if (lderrout != 0 && lderrout[0])
+ maybe_unlink (lderrout);
+
+#ifdef COLLECT_EXPORT_LIST
+ if (export_file != 0 && export_file[0])
+ maybe_unlink (export_file);
+#endif
+
+ signal (signo, SIG_DFL);
+ raise (signo);
+}
+
+
+int
+file_exists (const char *name)
+{
+ return access (name, R_OK) == 0;
+}
+
+/* Parse a reasonable subset of shell quoting syntax. */
+
+static char *
+extract_string (const char **pp)
+{
+ const char *p = *pp;
+ int backquote = 0;
+ int inside = 0;
+
+ for (;;)
+ {
+ char c = *p;
+ if (c == '\0')
+ break;
+ ++p;
+ if (backquote)
+ obstack_1grow (&temporary_obstack, c);
+ else if (! inside && c == ' ')
+ break;
+ else if (! inside && c == '\\')
+ backquote = 1;
+ else if (c == '\'')
+ inside = !inside;
+ else
+ obstack_1grow (&temporary_obstack, c);
+ }
+
+ obstack_1grow (&temporary_obstack, '\0');
+ *pp = p;
+ return XOBFINISH (&temporary_obstack, char *);
+}
+
+void
+dump_file (const char *name, FILE *to)
+{
+ FILE *stream = fopen (name, "r");
+
+ if (stream == 0)
+ return;
+ while (1)
+ {
+ int c;
+ while (c = getc (stream),
+ c != EOF && (ISIDNUM (c) || c == '$' || c == '.'))
+ obstack_1grow (&temporary_obstack, c);
+ if (obstack_object_size (&temporary_obstack) > 0)
+ {
+ const char *word, *p;
+ char *result;
+ obstack_1grow (&temporary_obstack, '\0');
+ word = XOBFINISH (&temporary_obstack, const char *);
+
+ if (*word == '.')
+ ++word, putc ('.', to);
+ p = word;
+ if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX)))
+ p += strlen (USER_LABEL_PREFIX);
+
+#ifdef HAVE_LD_DEMANGLE
+ result = 0;
+#else
+ if (no_demangle)
+ result = 0;
+ else
+ result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE);
+#endif
+
+ if (result)
+ {
+ int diff;
+ fputs (result, to);
+
+ diff = strlen (word) - strlen (result);
+ while (diff > 0 && c == ' ')
+ --diff, putc (' ', to);
+ while (diff < 0 && c == ' ')
+ ++diff, c = getc (stream);
+
+ free (result);
+ }
+ else
+ fputs (word, to);
+
+ fflush (to);
+ obstack_free (&temporary_obstack, temporary_firstobj);
+ }
+ if (c == EOF)
+ break;
+ putc (c, to);
+ }
+ fclose (stream);
+}
+
+/* Decide whether the given symbol is: a constructor (1), a destructor
+ (2), a routine in a shared object that calls all the constructors
+ (3) or destructors (4), a DWARF exception-handling table (5), or
+ nothing special (0). */
+
+static int
+is_ctor_dtor (const char *s)
+{
+ struct names { const char *const name; const int len; const int ret;
+ const int two_underscores; };
+
+ const struct names *p;
+ int ch;
+ const char *orig_s = s;
+
+ static const struct names special[] = {
+#ifndef NO_DOLLAR_IN_LABEL
+ { "GLOBAL__I$", sizeof ("GLOBAL__I$")-1, 1, 0 },
+ { "GLOBAL__D$", sizeof ("GLOBAL__D$")-1, 2, 0 },
+#else
+#ifndef NO_DOT_IN_LABEL
+ { "GLOBAL__I.", sizeof ("GLOBAL__I.")-1, 1, 0 },
+ { "GLOBAL__D.", sizeof ("GLOBAL__D.")-1, 2, 0 },
+#endif /* NO_DOT_IN_LABEL */
+#endif /* NO_DOLLAR_IN_LABEL */
+ { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
+ { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
+ { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
+ { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
+ { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
+ { NULL, 0, 0, 0 }
+ };
+
+ while ((ch = *s) == '_')
+ ++s;
+
+ if (s == orig_s)
+ return 0;
+
+ for (p = &special[0]; p->len > 0; p++)
+ {
+ if (ch == p->name[0]
+ && (!p->two_underscores || ((s - orig_s) >= 2))
+ && strncmp(s, p->name, p->len) == 0)
+ {
+ return p->ret;
+ }
+ }
+ return 0;
+}
+
+/* We maintain two prefix lists: one from COMPILER_PATH environment variable
+ and one from the PATH variable. */
+
+static struct path_prefix cpath, path;
+
+#ifdef CROSS_COMPILE
+/* This is the name of the target machine. We use it to form the name
+ of the files to execute. */
+
+static const char *const target_machine = TARGET_MACHINE;
+#endif
+
+/* Search for NAME using prefix list PPREFIX. We only look for executable
+ files.
+
+ Return 0 if not found, otherwise return its name, allocated with malloc. */
+
+static char *
+find_a_file (struct path_prefix *pprefix, const char *name)
+{
+ char *temp;
+ struct prefix_list *pl;
+ int len = pprefix->max_len + strlen (name) + 1;
+
+ if (debug)
+ fprintf (stderr, "Looking for '%s'\n", name);
+
+#ifdef HOST_EXECUTABLE_SUFFIX
+ len += strlen (HOST_EXECUTABLE_SUFFIX);
+#endif
+
+ temp = XNEWVEC (char, len);
+
+ /* Determine the filename to execute (special case for absolute paths). */
+
+ if (*name == '/'
+#ifdef HAVE_DOS_BASED_FILE_SYSTEM
+ || (*name && name[1] == ':')
+#endif
+ )
+ {
+ if (access (name, X_OK) == 0)
+ {
+ strcpy (temp, name);
+
+ if (debug)
+ fprintf (stderr, " - found: absolute path\n");
+
+ return temp;
+ }
+
+#ifdef HOST_EXECUTABLE_SUFFIX
+ /* Some systems have a suffix for executable files.
+ So try appending that. */
+ strcpy (temp, name);
+ strcat (temp, HOST_EXECUTABLE_SUFFIX);
+
+ if (access (temp, X_OK) == 0)
+ return temp;
+#endif
+
+ if (debug)
+ fprintf (stderr, " - failed to locate using absolute path\n");
+ }
+ else
+ for (pl = pprefix->plist; pl; pl = pl->next)
+ {
+ struct stat st;
+
+ strcpy (temp, pl->prefix);
+ strcat (temp, name);
+
+ if (stat (temp, &st) >= 0
+ && ! S_ISDIR (st.st_mode)
+ && access (temp, X_OK) == 0)
+ return temp;
+
+#ifdef HOST_EXECUTABLE_SUFFIX
+ /* Some systems have a suffix for executable files.
+ So try appending that. */
+ strcat (temp, HOST_EXECUTABLE_SUFFIX);
+
+ if (stat (temp, &st) >= 0
+ && ! S_ISDIR (st.st_mode)
+ && access (temp, X_OK) == 0)
+ return temp;
+#endif
+ }
+
+ if (debug && pprefix->plist == NULL)
+ fprintf (stderr, " - failed: no entries in prefix list\n");
+
+ free (temp);
+ return 0;
+}
+
+/* Add an entry for PREFIX to prefix list PPREFIX. */
+
+static void
+add_prefix (struct path_prefix *pprefix, const char *prefix)
+{
+ struct prefix_list *pl, **prev;
+ int len;
+
+ if (pprefix->plist)
+ {
+ for (pl = pprefix->plist; pl->next; pl = pl->next)
+ ;
+ prev = &pl->next;
+ }
+ else
+ prev = &pprefix->plist;
+
+ /* Keep track of the longest prefix. */
+
+ len = strlen (prefix);
+ if (len > pprefix->max_len)
+ pprefix->max_len = len;
+
+ pl = XNEW (struct prefix_list);
+ pl->prefix = xstrdup (prefix);
+
+ if (*prev)
+ pl->next = *prev;
+ else
+ pl->next = (struct prefix_list *) 0;
+ *prev = pl;
+}
+
+/* Take the value of the environment variable ENV, break it into a path, and
+ add of the entries to PPREFIX. */
+
+static void
+prefix_from_env (const char *env, struct path_prefix *pprefix)
+{
+ const char *p;
+ GET_ENVIRONMENT (p, env);
+
+ if (p)
+ prefix_from_string (p, pprefix);
+}
+
+static void
+prefix_from_string (const char *p, struct path_prefix *pprefix)
+{
+ const char *startp, *endp;
+ char *nstore = XNEWVEC (char, strlen (p) + 3);
+
+ if (debug)
+ fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
+
+ startp = endp = p;
+ while (1)
+ {
+ if (*endp == PATH_SEPARATOR || *endp == 0)
+ {
+ strncpy (nstore, startp, endp-startp);
+ if (endp == startp)
+ {
+ strcpy (nstore, "./");
+ }
+ else if (! IS_DIR_SEPARATOR (endp[-1]))
+ {
+ nstore[endp-startp] = DIR_SEPARATOR;
+ nstore[endp-startp+1] = 0;
+ }
+ else
+ nstore[endp-startp] = 0;
+
+ if (debug)
+ fprintf (stderr, " - add prefix: %s\n", nstore);
+
+ add_prefix (pprefix, nstore);
+ if (*endp == 0)
+ break;
+ endp = startp = endp + 1;
+ }
+ else
+ endp++;
+ }
+}
+
+/* Main program. */
+
+int
+main (int argc, char **argv)
+{
+ static const char *const ld_suffix = "ld";
+ static const char *const real_ld_suffix = "real-ld";
+ static const char *const collect_ld_suffix = "collect-ld";
+ static const char *const nm_suffix = "nm";
+ static const char *const gnm_suffix = "gnm";
+#ifdef LDD_SUFFIX
+ static const char *const ldd_suffix = LDD_SUFFIX;
+#endif
+ static const char *const strip_suffix = "strip";
+ static const char *const gstrip_suffix = "gstrip";
+
+#ifdef CROSS_COMPILE
+ /* If we look for a program in the compiler directories, we just use
+ the short name, since these directories are already system-specific.
+ But it we look for a program in the system directories, we need to
+ qualify the program name with the target machine. */
+
+ const char *const full_ld_suffix =
+ concat(target_machine, "-", ld_suffix, NULL);
+ const char *const full_nm_suffix =
+ concat (target_machine, "-", nm_suffix, NULL);
+ const char *const full_gnm_suffix =
+ concat (target_machine, "-", gnm_suffix, NULL);
+#ifdef LDD_SUFFIX
+ const char *const full_ldd_suffix =
+ concat (target_machine, "-", ldd_suffix, NULL);
+#endif
+ const char *const full_strip_suffix =
+ concat (target_machine, "-", strip_suffix, NULL);
+ const char *const full_gstrip_suffix =
+ concat (target_machine, "-", gstrip_suffix, NULL);
+#else
+ const char *const full_ld_suffix = ld_suffix;
+ const char *const full_nm_suffix = nm_suffix;
+ const char *const full_gnm_suffix = gnm_suffix;
+#ifdef LDD_SUFFIX
+ const char *const full_ldd_suffix = ldd_suffix;
+#endif
+ const char *const full_strip_suffix = strip_suffix;
+ const char *const full_gstrip_suffix = gstrip_suffix;
+#endif /* CROSS_COMPILE */
+
+ const char *arg;
+ FILE *outf;
+#ifdef COLLECT_EXPORT_LIST
+ FILE *exportf;
+#endif
+ const char *ld_file_name;
+ const char *p;
+ char **c_argv;
+ const char **c_ptr;
+ char **ld1_argv;
+ const char **ld1;
+ char **ld2_argv;
+ const char **ld2;
+ char **object_lst;
+ const char **object;
+ int first_file;
+ int num_c_args = argc+9;
+
+ no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
+
+ /* Suppress demangling by the real linker, which may be broken. */
+ putenv (xstrdup ("COLLECT_NO_DEMANGLE="));
+
+#if defined (COLLECT2_HOST_INITIALIZATION)
+ /* Perform system dependent initialization, if necessary. */
+ COLLECT2_HOST_INITIALIZATION;
+#endif
+
+#ifdef SIGCHLD
+ /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
+ receive the signal. A different setting is inheritable */
+ signal (SIGCHLD, SIG_DFL);
+#endif
+
+ /* Unlock the stdio streams. */
+ unlock_std_streams ();
+
+ gcc_init_libintl ();
+
+ /* Do not invoke xcalloc before this point, since locale needs to be
+ set first, in case a diagnostic is issued. */
+
+ ld1 = (const char **)(ld1_argv = xcalloc(sizeof (char *), argc+4));
+ ld2 = (const char **)(ld2_argv = xcalloc(sizeof (char *), argc+11));
+ object = (const char **)(object_lst = xcalloc(sizeof (char *), argc));
+
+#ifdef DEBUG
+ debug = 1;
+#endif
+
+ /* Parse command line early for instances of -debug. This allows
+ the debug flag to be set before functions like find_a_file()
+ are called. */
+ {
+ int i;
+
+ for (i = 1; argv[i] != NULL; i ++)
+ {
+ if (! strcmp (argv[i], "-debug"))
+ debug = 1;
+ }
+ vflag = debug;
+ }
+
+#ifndef DEFAULT_A_OUT_NAME
+ output_file = "a.out";
+#else
+ output_file = DEFAULT_A_OUT_NAME;
+#endif
+
+ obstack_begin (&temporary_obstack, 0);
+ temporary_firstobj = obstack_alloc (&temporary_obstack, 0);
+
+#ifndef HAVE_LD_DEMANGLE
+ current_demangling_style = auto_demangling;
+#endif
+ p = getenv ("COLLECT_GCC_OPTIONS");
+ while (p && *p)
+ {
+ const char *q = extract_string (&p);
+ if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
+ num_c_args++;
+ }
+ obstack_free (&temporary_obstack, temporary_firstobj);
+
+ /* -fno-profile-arcs -fno-test-coverage -fno-branch-probabilities
+ -fno-exceptions -w */
+ num_c_args += 5;
+
+ c_ptr = (const char **) (c_argv = xcalloc (sizeof (char *), num_c_args));
+
+ if (argc < 2)
+ fatal ("no arguments");
+
+#ifdef SIGQUIT
+ if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
+ signal (SIGQUIT, handler);
+#endif
+ if (signal (SIGINT, SIG_IGN) != SIG_IGN)
+ signal (SIGINT, handler);
+#ifdef SIGALRM
+ if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
+ signal (SIGALRM, handler);
+#endif
+#ifdef SIGHUP
+ if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
+ signal (SIGHUP, handler);
+#endif
+ if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
+ signal (SIGSEGV, handler);
+#ifdef SIGBUS
+ if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
+ signal (SIGBUS, handler);
+#endif
+
+ /* Extract COMPILER_PATH and PATH into our prefix list. */
+ prefix_from_env ("COMPILER_PATH", &cpath);
+ prefix_from_env ("PATH", &path);
+
+ /* Try to discover a valid linker/nm/strip to use. */
+
+ /* Maybe we know the right file to use (if not cross). */
+ ld_file_name = 0;
+#ifdef DEFAULT_LINKER
+ if (access (DEFAULT_LINKER, X_OK) == 0)
+ ld_file_name = DEFAULT_LINKER;
+ if (ld_file_name == 0)
+#endif
+#ifdef REAL_LD_FILE_NAME
+ ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
+ if (ld_file_name == 0)
+#endif
+ /* Search the (target-specific) compiler dirs for ld'. */
+ ld_file_name = find_a_file (&cpath, real_ld_suffix);
+ /* Likewise for `collect-ld'. */
+ if (ld_file_name == 0)
+ ld_file_name = find_a_file (&cpath, collect_ld_suffix);
+ /* Search the compiler directories for `ld'. We have protection against
+ recursive calls in find_a_file. */
+ if (ld_file_name == 0)
+ ld_file_name = find_a_file (&cpath, ld_suffix);
+ /* Search the ordinary system bin directories
+ for `ld' (if native linking) or `TARGET-ld' (if cross). */
+ if (ld_file_name == 0)
+ ld_file_name = find_a_file (&path, full_ld_suffix);
+
+#ifdef REAL_NM_FILE_NAME
+ nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
+ if (nm_file_name == 0)
+#endif
+ nm_file_name = find_a_file (&cpath, gnm_suffix);
+ if (nm_file_name == 0)
+ nm_file_name = find_a_file (&path, full_gnm_suffix);
+ if (nm_file_name == 0)
+ nm_file_name = find_a_file (&cpath, nm_suffix);
+ if (nm_file_name == 0)
+ nm_file_name = find_a_file (&path, full_nm_suffix);
+
+#ifdef LDD_SUFFIX
+ ldd_file_name = find_a_file (&cpath, ldd_suffix);
+ if (ldd_file_name == 0)
+ ldd_file_name = find_a_file (&path, full_ldd_suffix);
+#endif
+
+#ifdef REAL_STRIP_FILE_NAME
+ strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
+ if (strip_file_name == 0)
+#endif
+ strip_file_name = find_a_file (&cpath, gstrip_suffix);
+ if (strip_file_name == 0)
+ strip_file_name = find_a_file (&path, full_gstrip_suffix);
+ if (strip_file_name == 0)
+ strip_file_name = find_a_file (&cpath, strip_suffix);
+ if (strip_file_name == 0)
+ strip_file_name = find_a_file (&path, full_strip_suffix);
+
+ /* Determine the full path name of the C compiler to use. */
+ c_file_name = getenv ("COLLECT_GCC");
+ if (c_file_name == 0)
+ {
+#ifdef CROSS_COMPILE
+ c_file_name = concat (target_machine, "-gcc", NULL);
+#else
+ c_file_name = "gcc";
+#endif
+ }
+
+ p = find_a_file (&cpath, c_file_name);
+
+ /* Here it should be safe to use the system search path since we should have
+ already qualified the name of the compiler when it is needed. */
+ if (p == 0)
+ p = find_a_file (&path, c_file_name);
+
+ if (p)
+ c_file_name = p;
+
+ *ld1++ = *ld2++ = ld_file_name;
+
+ /* Make temp file names. */
+ c_file = make_temp_file (".c");
+ o_file = make_temp_file (".o");
+#ifdef COLLECT_EXPORT_LIST
+ export_file = make_temp_file (".x");
+#endif
+ ldout = make_temp_file (".ld");
+ lderrout = make_temp_file (".le");
+ *c_ptr++ = c_file_name;
+ *c_ptr++ = "-x";
+ *c_ptr++ = "c";
+ *c_ptr++ = "-c";
+ *c_ptr++ = "-o";
+ *c_ptr++ = o_file;
+
+#ifdef COLLECT_EXPORT_LIST
+ /* Generate a list of directories from LIBPATH. */
+ prefix_from_env ("LIBPATH", &libpath_lib_dirs);
+ /* Add to this list also two standard directories where
+ AIX loader always searches for libraries. */
+ add_prefix (&libpath_lib_dirs, "/lib");
+ add_prefix (&libpath_lib_dirs, "/usr/lib");
+#endif
+
+ /* Get any options that the upper GCC wants to pass to the sub-GCC.
+
+ AIX support needs to know if -shared has been specified before
+ parsing commandline arguments. */
+
+ p = getenv ("COLLECT_GCC_OPTIONS");
+ while (p && *p)
+ {
+ const char *q = extract_string (&p);
+ if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
+ *c_ptr++ = xstrdup (q);
+ if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
+ *c_ptr++ = xstrdup (q);
+ if (strcmp (q, "-shared") == 0)
+ shared_obj = 1;
+ if (*q == '-' && q[1] == 'B')
+ {
+ *c_ptr++ = xstrdup (q);
+ if (q[2] == 0)
+ {
+ q = extract_string (&p);
+ *c_ptr++ = xstrdup (q);
+ }
+ }
+ }
+ obstack_free (&temporary_obstack, temporary_firstobj);
+ *c_ptr++ = "-fno-profile-arcs";
+ *c_ptr++ = "-fno-test-coverage";
+ *c_ptr++ = "-fno-branch-probabilities";
+ *c_ptr++ = "-fno-exceptions";
+ *c_ptr++ = "-w";
+
+ /* !!! When GCC calls collect2,
+ it does not know whether it is calling collect2 or ld.
+ So collect2 cannot meaningfully understand any options
+ except those ld understands.
+ If you propose to make GCC pass some other option,
+ just imagine what will happen if ld is really ld!!! */
+
+ /* Parse arguments. Remember output file spec, pass the rest to ld. */
+ /* After the first file, put in the c++ rt0. */
+
+ first_file = 1;
+#ifdef HAVE_LD_DEMANGLE
+ if (!demangle_flag && !no_demangle)
+ demangle_flag = "--demangle";
+ if (demangle_flag)
+ *ld1++ = *ld2++ = demangle_flag;
+#endif
+ while ((arg = *++argv) != (char *) 0)
+ {
+ *ld1++ = *ld2++ = arg;
+
+ if (arg[0] == '-')
+ {
+ switch (arg[1])
+ {
+#ifdef COLLECT_EXPORT_LIST
+ /* We want to disable automatic exports on AIX when user
+ explicitly puts an export list in command line */
+ case 'b':
+ if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
+ export_flag = 1;
+ else if (arg[2] == '6' && arg[3] == '4')
+ aix64_flag = 1;
+ else if (arg[2] == 'r' && arg[3] == 't' && arg[4] == 'l')
+ aixrtl_flag = 1;
+ break;
+#endif
+
+ case 'd':
+ if (!strcmp (arg, "-debug"))
+ {
+ /* Already parsed. */
+ ld1--;
+ ld2--;
+ }
+ if (!strcmp (arg, "-dynamic-linker") && argv[1])
+ {
+ ++argv;
+ *ld1++ = *ld2++ = *argv;
+ }
+ break;
+
+ case 'l':
+ if (first_file)
+ {
+ /* place o_file BEFORE this argument! */
+ first_file = 0;
+ ld2--;
+ *ld2++ = o_file;
+ *ld2++ = arg;
+ }
+#ifdef COLLECT_EXPORT_LIST
+ {
+ /* Resolving full library name. */
+ const char *s = resolve_lib_name (arg+2);
+
+ /* Saving a full library name. */
+ add_to_list (&libs, s);
+ }
+#endif
+ break;
+
+#ifdef COLLECT_EXPORT_LIST
+ /* Saving directories where to search for libraries. */
+ case 'L':
+ add_prefix (&cmdline_lib_dirs, arg+2);
+ break;
+#else
+#if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
+ case 'L':
+ if (is_in_args (arg, (const char **) ld1_argv, ld1-1))
+ --ld1;
+ break;
+#endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
+#endif
+
+ case 'o':
+ if (arg[2] == '\0')
+ output_file = *ld1++ = *ld2++ = *++argv;
+ else if (1
+#ifdef SWITCHES_NEED_SPACES
+ && ! strchr (SWITCHES_NEED_SPACES, arg[1])
+#endif
+ )
+
+ output_file = &arg[2];
+ break;
+
+ case 'r':
+ if (arg[2] == '\0')
+ rflag = 1;
+ break;
+
+ case 's':
+ if (arg[2] == '\0' && do_collecting)
+ {
+ /* We must strip after the nm run, otherwise C++ linking
+ will not work. Thus we strip in the second ld run, or
+ else with strip if there is no second ld run. */
+ strip_flag = 1;
+ ld1--;
+ }
+ break;
+
+ case 'v':
+ if (arg[2] == '\0')
+ vflag = 1;
+ break;
+
+ case '-':
+ if (strcmp (arg, "--no-demangle") == 0)
+ {
+ demangle_flag = arg;
+ no_demangle = 1;
+ ld1--;
+ ld2--;
+ }
+ else if (strncmp (arg, "--demangle", 10) == 0)
+ {
+ demangle_flag = arg;
+ no_demangle = 0;
+#ifndef HAVE_LD_DEMANGLE
+ if (arg[10] == '=')
+ {
+ enum demangling_styles style
+ = cplus_demangle_name_to_style (arg+11);
+ if (style == unknown_demangling)
+ error ("unknown demangling style '%s'", arg+11);
+ else
+ current_demangling_style = style;
+ }
+#endif
+ ld1--;
+ ld2--;
+ }
+ break;
+ }
+ }
+ else if ((p = strrchr (arg, '.')) != (char *) 0
+ && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
+ || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0
+ || strcmp (p, ".obj") == 0))
+ {
+ if (first_file)
+ {
+ first_file = 0;
+ if (p[1] == 'o')
+ *ld2++ = o_file;
+ else
+ {
+ /* place o_file BEFORE this argument! */
+ ld2--;
+ *ld2++ = o_file;
+ *ld2++ = arg;
+ }
+ }
+ if (p[1] == 'o' || p[1] == 'l')
+ *object++ = arg;
+#ifdef COLLECT_EXPORT_LIST
+ /* libraries can be specified directly, i.e. without -l flag. */
+ else
+ {
+ /* Saving a full library name. */
+ add_to_list (&libs, arg);
+ }
+#endif
+ }
+ }
+
+#ifdef COLLECT_EXPORT_LIST
+ /* This is added only for debugging purposes. */
+ if (debug)
+ {
+ fprintf (stderr, "List of libraries:\n");
+ dump_list (stderr, "\t", libs.first);
+ }
+
+ /* The AIX linker will discard static constructors in object files if
+ nothing else in the file is referenced, so look at them first. */
+ {
+ const char **export_object_lst = (const char **)object_lst;
+
+ while (export_object_lst < object)
+ scan_prog_file (*export_object_lst++, PASS_OBJ);
+ }
+ {
+ struct id *list = libs.first;
+
+ for (; list; list = list->next)
+ scan_prog_file (list->name, PASS_FIRST);
+ }
+
+ if (exports.first)
+ {
+ char *buf = concat ("-bE:", export_file, NULL);
+
+ *ld1++ = buf;
+ *ld2++ = buf;
+
+ exportf = fopen (export_file, "w");
+ if (exportf == (FILE *) 0)
+ fatal_perror ("fopen %s", export_file);
+ write_aix_file (exportf, exports.first);
+ if (fclose (exportf))
+ fatal_perror ("fclose %s", export_file);
+ }
+#endif
+
+ *c_ptr++ = c_file;
+ *c_ptr = *ld1 = *object = (char *) 0;
+
+ if (vflag)
+ {
+ notice ("collect2 version %s", version_string);
+#ifdef TARGET_VERSION
+ TARGET_VERSION;
+#endif
+ fprintf (stderr, "\n");
+ }
+
+ if (debug)
+ {
+ const char *ptr;
+ fprintf (stderr, "ld_file_name = %s\n",
+ (ld_file_name ? ld_file_name : "not found"));
+ fprintf (stderr, "c_file_name = %s\n",
+ (c_file_name ? c_file_name : "not found"));
+ fprintf (stderr, "nm_file_name = %s\n",
+ (nm_file_name ? nm_file_name : "not found"));
+#ifdef LDD_SUFFIX
+ fprintf (stderr, "ldd_file_name = %s\n",
+ (ldd_file_name ? ldd_file_name : "not found"));
+#endif
+ fprintf (stderr, "strip_file_name = %s\n",
+ (strip_file_name ? strip_file_name : "not found"));
+ fprintf (stderr, "c_file = %s\n",
+ (c_file ? c_file : "not found"));
+ fprintf (stderr, "o_file = %s\n",
+ (o_file ? o_file : "not found"));
+
+ ptr = getenv ("COLLECT_GCC_OPTIONS");
+ if (ptr)
+ fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
+
+ ptr = getenv ("COLLECT_GCC");
+ if (ptr)
+ fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
+
+ ptr = getenv ("COMPILER_PATH");
+ if (ptr)
+ fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
+
+ ptr = getenv (LIBRARY_PATH_ENV);
+ if (ptr)
+ fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr);
+
+ fprintf (stderr, "\n");
+ }
+
+ /* Load the program, searching all libraries and attempting to provide
+ undefined symbols from repository information. */
+
+ /* On AIX we do this later. */
+#ifndef COLLECT_EXPORT_LIST
+ do_tlink (ld1_argv, object_lst);
+#endif
+
+ /* If -r or they will be run via some other method, do not build the
+ constructor or destructor list, just return now. */
+ if (rflag
+#ifndef COLLECT_EXPORT_LIST
+ || ! do_collecting
+#endif
+ )
+ {
+#ifdef COLLECT_EXPORT_LIST
+ /* Do the link we avoided above if we are exiting. */
+ do_tlink (ld1_argv, object_lst);
+
+ /* But make sure we delete the export file we may have created. */
+ if (export_file != 0 && export_file[0])
+ maybe_unlink (export_file);
+#endif
+ maybe_unlink (c_file);
+ maybe_unlink (o_file);
+ return 0;
+ }
+
+ /* Examine the namelist with nm and search it for static constructors
+ and destructors to call.
+ Write the constructor and destructor tables to a .s file and reload. */
+
+ /* On AIX we already scanned for global constructors/destructors. */
+#ifndef COLLECT_EXPORT_LIST
+ scan_prog_file (output_file, PASS_FIRST);
+#endif
+
+#ifdef SCAN_LIBRARIES
+ scan_libraries (output_file);
+#endif
+
+ if (debug)
+ {
+ notice ("%d constructor(s) found\n", constructors.number);
+ notice ("%d destructor(s) found\n", destructors.number);
+ notice ("%d frame table(s) found\n", frame_tables.number);
+ }
+
+ if (constructors.number == 0 && destructors.number == 0
+ && frame_tables.number == 0
+#if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
+ /* If we will be running these functions ourselves, we want to emit
+ stubs into the shared library so that we do not have to relink
+ dependent programs when we add static objects. */
+ && ! shared_obj
+#endif
+ )
+ {
+#ifdef COLLECT_EXPORT_LIST
+ /* Do tlink without additional code generation. */
+ do_tlink (ld1_argv, object_lst);
+#endif
+ /* Strip now if it was requested on the command line. */
+ if (strip_flag)
+ {
+ char **real_strip_argv = XCNEWVEC (char *, 3);
+ const char ** strip_argv = (const char **) real_strip_argv;
+
+ strip_argv[0] = strip_file_name;
+ strip_argv[1] = output_file;
+ strip_argv[2] = (char *) 0;
+ fork_execute ("strip", real_strip_argv);
+ }
+
+#ifdef COLLECT_EXPORT_LIST
+ maybe_unlink (export_file);
+#endif
+ maybe_unlink (c_file);
+ maybe_unlink (o_file);
+ return 0;
+ }
+
+ /* Sort ctor and dtor lists by priority. */
+ sort_ids (&constructors);
+ sort_ids (&destructors);
+
+ maybe_unlink(output_file);
+ outf = fopen (c_file, "w");
+ if (outf == (FILE *) 0)
+ fatal_perror ("fopen %s", c_file);
+
+ write_c_file (outf, c_file);
+
+ if (fclose (outf))
+ fatal_perror ("fclose %s", c_file);
+
+ /* Tell the linker that we have initializer and finalizer functions. */
+#ifdef LD_INIT_SWITCH
+#ifdef COLLECT_EXPORT_LIST
+ *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL);
+#else
+ *ld2++ = LD_INIT_SWITCH;
+ *ld2++ = initname;
+ *ld2++ = LD_FINI_SWITCH;
+ *ld2++ = fininame;
+#endif
+#endif
+
+#ifdef COLLECT_EXPORT_LIST
+ if (shared_obj)
+ {
+ /* If we did not add export flag to link arguments before, add it to
+ second link phase now. No new exports should have been added. */
+ if (! exports.first)
+ *ld2++ = concat ("-bE:", export_file, NULL);
+
+#ifndef LD_INIT_SWITCH
+ add_to_list (&exports, initname);
+ add_to_list (&exports, fininame);
+ add_to_list (&exports, "_GLOBAL__DI");
+ add_to_list (&exports, "_GLOBAL__DD");
+#endif
+ exportf = fopen (export_file, "w");
+ if (exportf == (FILE *) 0)
+ fatal_perror ("fopen %s", export_file);
+ write_aix_file (exportf, exports.first);
+ if (fclose (exportf))
+ fatal_perror ("fclose %s", export_file);
+ }
+#endif
+
+ /* End of arguments to second link phase. */
+ *ld2 = (char*) 0;
+
+ if (debug)
+ {
+ fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
+ output_file, c_file);
+ write_c_file (stderr, "stderr");
+ fprintf (stderr, "========== end of c_file\n\n");
+#ifdef COLLECT_EXPORT_LIST
+ fprintf (stderr, "\n========== export_file = %s\n", export_file);
+ write_aix_file (stderr, exports.first);
+ fprintf (stderr, "========== end of export_file\n\n");
+#endif
+ }
+
+ /* Assemble the constructor and destructor tables.
+ Link the tables in with the rest of the program. */
+
+ fork_execute ("gcc", c_argv);
+#ifdef COLLECT_EXPORT_LIST
+ /* On AIX we must call tlink because of possible templates resolution. */
+ do_tlink (ld2_argv, object_lst);
+#else
+ /* Otherwise, simply call ld because tlink is already done. */
+ fork_execute ("ld", ld2_argv);
+
+ /* Let scan_prog_file do any final mods (OSF/rose needs this for
+ constructors/destructors in shared libraries. */
+ scan_prog_file (output_file, PASS_SECOND);
+#endif
+
+ maybe_unlink (c_file);
+ maybe_unlink (o_file);
+
+#ifdef COLLECT_EXPORT_LIST
+ maybe_unlink (export_file);
+#endif
+
+ return 0;
+}
+
+
+/* Wait for a process to finish, and exit if a nonzero status is found. */
+
+int
+collect_wait (const char *prog, struct pex_obj *pex)
+{
+ int status;
+
+ if (!pex_get_status (pex, 1, &status))
+ fatal_perror ("can't get program status");
+ pex_free (pex);
+
+ if (status)
+ {
+ if (WIFSIGNALED (status))
+ {
+ int sig = WTERMSIG (status);
+ error ("%s terminated with signal %d [%s]%s",
+ prog, sig, strsignal(sig),
+ WCOREDUMP(status) ? ", core dumped" : "");
+ collect_exit (FATAL_EXIT_CODE);
+ }
+
+ if (WIFEXITED (status))
+ return WEXITSTATUS (status);
+ }
+ return 0;
+}
+
+static void
+do_wait (const char *prog, struct pex_obj *pex)
+{
+ int ret = collect_wait (prog, pex);
+ if (ret != 0)
+ {
+ error ("%s returned %d exit status", prog, ret);
+ collect_exit (ret);
+ }
+}
+
+
+/* Execute a program, and wait for the reply. */
+
+struct pex_obj *
+collect_execute (const char *prog, char **argv, const char *outname,
+ const char *errname)
+{
+ struct pex_obj *pex;
+ const char *errmsg;
+ int err;
+
+ if (vflag || debug)
+ {
+ char **p_argv;
+ const char *str;
+
+ if (argv[0])
+ fprintf (stderr, "%s", argv[0]);
+ else
+ notice ("[cannot find %s]", prog);
+
+ for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
+ fprintf (stderr, " %s", str);
+
+ fprintf (stderr, "\n");
+ }
+
+ fflush (stdout);
+ fflush (stderr);
+
+ /* If we cannot find a program we need, complain error. Do this here
+ since we might not end up needing something that we could not find. */
+
+ if (argv[0] == 0)
+ fatal ("cannot find '%s'", prog);
+
+ pex = pex_init (0, "collect2", NULL);
+ if (pex == NULL)
+ fatal_perror ("pex_init failed");
+
+ errmsg = pex_run (pex, PEX_LAST | PEX_SEARCH, argv[0], argv, outname,
+ errname, &err);
+ if (errmsg != NULL)
+ {
+ if (err != 0)
+ {
+ errno = err;
+ fatal_perror (errmsg);
+ }
+ else
+ fatal (errmsg);
+ }
+
+ return pex;
+}
+
+static void
+fork_execute (const char *prog, char **argv)
+{
+ struct pex_obj *pex;
+
+ pex = collect_execute (prog, argv, NULL, NULL);
+ do_wait (prog, pex);
+}
+
+/* Unlink a file unless we are debugging. */
+
+static void
+maybe_unlink (const char *file)
+{
+ if (!debug)
+ unlink_if_ordinary (file);
+ else
+ notice ("[Leaving %s]\n", file);
+}
+
+
+static long sequence_number = 0;
+
+/* Add a name to a linked list. */
+
+static void
+add_to_list (struct head *head_ptr, const char *name)
+{
+ struct id *newid = xcalloc (sizeof (struct id) + strlen (name), 1);
+ struct id *p;
+ strcpy (newid->name, name);
+
+ if (head_ptr->first)
+ head_ptr->last->next = newid;
+ else
+ head_ptr->first = newid;
+
+ /* Check for duplicate symbols. */
+ for (p = head_ptr->first;
+ strcmp (name, p->name) != 0;
+ p = p->next)
+ ;
+ if (p != newid)
+ {
+ head_ptr->last->next = 0;
+ free (newid);
+ return;
+ }
+
+ newid->sequence = ++sequence_number;
+ head_ptr->last = newid;
+ head_ptr->number++;
+}
+
+/* Grab the init priority number from an init function name that
+ looks like "_GLOBAL_.I.12345.foo". */
+
+static int
+extract_init_priority (const char *name)
+{
+ int pos = 0, pri;
+
+ while (name[pos] == '_')
+ ++pos;
+ pos += 10; /* strlen ("GLOBAL__X_") */
+
+ /* Extract init_p number from ctor/dtor name. */
+ pri = atoi (name + pos);
+ return pri ? pri : DEFAULT_INIT_PRIORITY;
+}
+
+/* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
+ ctors will be run from right to left, dtors from left to right. */
+
+static void
+sort_ids (struct head *head_ptr)
+{
+ /* id holds the current element to insert. id_next holds the next
+ element to insert. id_ptr iterates through the already sorted elements
+ looking for the place to insert id. */
+ struct id *id, *id_next, **id_ptr;
+
+ id = head_ptr->first;
+
+ /* We don't have any sorted elements yet. */
+ head_ptr->first = NULL;
+
+ for (; id; id = id_next)
+ {
+ id_next = id->next;
+ id->sequence = extract_init_priority (id->name);
+
+ for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
+ if (*id_ptr == NULL
+ /* If the sequence numbers are the same, we put the id from the
+ file later on the command line later in the list. */
+ || id->sequence > (*id_ptr)->sequence
+ /* Hack: do lexical compare, too.
+ || (id->sequence == (*id_ptr)->sequence
+ && strcmp (id->name, (*id_ptr)->name) > 0) */
+ )
+ {
+ id->next = *id_ptr;
+ *id_ptr = id;
+ break;
+ }
+ }
+
+ /* Now set the sequence numbers properly so write_c_file works. */
+ for (id = head_ptr->first; id; id = id->next)
+ id->sequence = ++sequence_number;
+}
+
+/* Write: `prefix', the names on list LIST, `suffix'. */
+
+static void
+write_list (FILE *stream, const char *prefix, struct id *list)
+{
+ while (list)
+ {
+ fprintf (stream, "%sx%d,\n", prefix, list->sequence);
+ list = list->next;
+ }
+}
+
+#if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
+/* Given a STRING, return nonzero if it occurs in the list in range
+ [ARGS_BEGIN,ARGS_END). */
+
+static int
+is_in_args (const char *string, const char **args_begin,
+ const char **args_end)
+{
+ const char **args_pointer;
+ for (args_pointer = args_begin; args_pointer != args_end; ++args_pointer)
+ if (strcmp (string, *args_pointer) == 0)
+ return 1;
+ return 0;
+}
+#endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
+
+#ifdef COLLECT_EXPORT_LIST
+/* This function is really used only on AIX, but may be useful. */
+#if 0
+static int
+is_in_list (const char *prefix, struct id *list)
+{
+ while (list)
+ {
+ if (!strcmp (prefix, list->name)) return 1;
+ list = list->next;
+ }
+ return 0;
+}
+#endif
+#endif /* COLLECT_EXPORT_LIST */
+
+/* Added for debugging purpose. */
+#ifdef COLLECT_EXPORT_LIST
+static void
+dump_list (FILE *stream, const char *prefix, struct id *list)
+{
+ while (list)
+ {
+ fprintf (stream, "%s%s,\n", prefix, list->name);
+ list = list->next;
+ }
+}
+#endif
+
+#if 0
+static void
+dump_prefix_list (FILE *stream, const char *prefix, struct prefix_list *list)
+{
+ while (list)
+ {
+ fprintf (stream, "%s%s,\n", prefix, list->prefix);
+ list = list->next;
+ }
+}
+#endif
+
+static void
+write_list_with_asm (FILE *stream, const char *prefix, struct id *list)
+{
+ while (list)
+ {
+ fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
+ prefix, list->sequence, list->name);
+ list = list->next;
+ }
+}
+
+/* Write out the constructor and destructor tables statically (for a shared
+ object), along with the functions to execute them. */
+
+static void
+write_c_file_stat (FILE *stream, const char *name ATTRIBUTE_UNUSED)
+{
+ const char *p, *q;
+ char *prefix, *r;
+ int frames = (frame_tables.number > 0);
+
+ /* Figure out name of output_file, stripping off .so version. */
+ p = strrchr (output_file, '/');
+ if (p == 0)
+ p = output_file;
+ else
+ p++;
+ q = p;
+ while (q)
+ {
+ q = strchr (q,'.');
+ if (q == 0)
+ {
+ q = p + strlen (p);
+ break;
+ }
+ else
+ {
+ if (strncmp (q, ".so", 3) == 0)
+ {
+ q += 3;
+ break;
+ }
+ else
+ q++;
+ }
+ }
+ /* q points to null at end of the string (or . of the .so version) */
+ prefix = XNEWVEC (char, q - p + 1);
+ strncpy (prefix, p, q - p);
+ prefix[q - p] = 0;
+ for (r = prefix; *r; r++)
+ if (!ISALNUM ((unsigned char)*r))
+ *r = '_';
+ if (debug)
+ notice ("\nwrite_c_file - output name is %s, prefix is %s\n",
+ output_file, prefix);
+
+ initname = concat ("_GLOBAL__FI_", prefix, NULL);
+ fininame = concat ("_GLOBAL__FD_", prefix, NULL);
+
+ free (prefix);
+
+ /* Write the tables as C code. */
+
+ fprintf (stream, "static int count;\n");
+ fprintf (stream, "typedef void entry_pt();\n");
+ write_list_with_asm (stream, "extern entry_pt ", constructors.first);
+
+ if (frames)
+ {
+ write_list_with_asm (stream, "extern void *", frame_tables.first);
+
+ fprintf (stream, "\tstatic void *frame_table[] = {\n");
+ write_list (stream, "\t\t&", frame_tables.first);
+ fprintf (stream, "\t0\n};\n");
+
+ /* This must match what's in frame.h. */
+ fprintf (stream, "struct object {\n");
+ fprintf (stream, " void *pc_begin;\n");
+ fprintf (stream, " void *pc_end;\n");
+ fprintf (stream, " void *fde_begin;\n");
+ fprintf (stream, " void *fde_array;\n");
+ fprintf (stream, " __SIZE_TYPE__ count;\n");
+ fprintf (stream, " struct object *next;\n");
+ fprintf (stream, "};\n");
+
+ fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
+ fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
+
+ fprintf (stream, "static void reg_frame () {\n");
+ fprintf (stream, "\tstatic struct object ob;\n");
+ fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
+ fprintf (stream, "\t}\n");
+
+ fprintf (stream, "static void dereg_frame () {\n");
+ fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
+ fprintf (stream, "\t}\n");
+ }
+
+ fprintf (stream, "void %s() {\n", initname);
+ if (constructors.number > 0 || frames)
+ {
+ fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
+ write_list (stream, "\t\t", constructors.first);
+ if (frames)
+ fprintf (stream, "\treg_frame,\n");
+ fprintf (stream, "\t};\n");
+ fprintf (stream, "\tentry_pt **p;\n");
+ fprintf (stream, "\tif (count++ != 0) return;\n");
+ fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
+ fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
+ }
+ else
+ fprintf (stream, "\t++count;\n");
+ fprintf (stream, "}\n");
+ write_list_with_asm (stream, "extern entry_pt ", destructors.first);
+ fprintf (stream, "void %s() {\n", fininame);
+ if (destructors.number > 0 || frames)
+ {
+ fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
+ write_list (stream, "\t\t", destructors.first);
+ if (frames)
+ fprintf (stream, "\tdereg_frame,\n");
+ fprintf (stream, "\t};\n");
+ fprintf (stream, "\tentry_pt **p;\n");
+ fprintf (stream, "\tif (--count != 0) return;\n");
+ fprintf (stream, "\tp = dtors;\n");
+ fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
+ destructors.number + frames);
+ }
+ fprintf (stream, "}\n");
+
+ if (shared_obj)
+ {
+ COLLECT_SHARED_INIT_FUNC(stream, initname);
+ COLLECT_SHARED_FINI_FUNC(stream, fininame);
+ }
+}
+
+/* Write the constructor/destructor tables. */
+
+#ifndef LD_INIT_SWITCH
+static void
+write_c_file_glob (FILE *stream, const char *name ATTRIBUTE_UNUSED)
+{
+ /* Write the tables as C code. */
+
+ int frames = (frame_tables.number > 0);
+
+ fprintf (stream, "typedef void entry_pt();\n\n");
+
+ write_list_with_asm (stream, "extern entry_pt ", constructors.first);
+
+ if (frames)
+ {
+ write_list_with_asm (stream, "extern void *", frame_tables.first);
+
+ fprintf (stream, "\tstatic void *frame_table[] = {\n");
+ write_list (stream, "\t\t&", frame_tables.first);
+ fprintf (stream, "\t0\n};\n");
+
+ /* This must match what's in frame.h. */
+ fprintf (stream, "struct object {\n");
+ fprintf (stream, " void *pc_begin;\n");
+ fprintf (stream, " void *pc_end;\n");
+ fprintf (stream, " void *fde_begin;\n");
+ fprintf (stream, " void *fde_array;\n");
+ fprintf (stream, " __SIZE_TYPE__ count;\n");
+ fprintf (stream, " struct object *next;\n");
+ fprintf (stream, "};\n");
+
+ fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
+ fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
+
+ fprintf (stream, "static void reg_frame () {\n");
+ fprintf (stream, "\tstatic struct object ob;\n");
+ fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
+ fprintf (stream, "\t}\n");
+
+ fprintf (stream, "static void dereg_frame () {\n");
+ fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
+ fprintf (stream, "\t}\n");
+ }
+
+ fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
+ fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
+ write_list (stream, "\t", constructors.first);
+ if (frames)
+ fprintf (stream, "\treg_frame,\n");
+ fprintf (stream, "\t0\n};\n\n");
+
+ write_list_with_asm (stream, "extern entry_pt ", destructors.first);
+
+ fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
+ fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
+ write_list (stream, "\t", destructors.first);
+ if (frames)
+ fprintf (stream, "\tdereg_frame,\n");
+ fprintf (stream, "\t0\n};\n\n");
+
+ fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
+ fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
+}
+#endif /* ! LD_INIT_SWITCH */
+
+static void
+write_c_file (FILE *stream, const char *name)
+{
+ fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
+#ifndef LD_INIT_SWITCH
+ if (! shared_obj)
+ write_c_file_glob (stream, name);
+ else
+#endif
+ write_c_file_stat (stream, name);
+ fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
+}
+
+#ifdef COLLECT_EXPORT_LIST
+static void
+write_aix_file (FILE *stream, struct id *list)
+{
+ for (; list; list = list->next)
+ {
+ fputs (list->name, stream);
+ putc ('\n', stream);
+ }
+}
+#endif
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Generic version to scan the name list of the loaded program for
+ the symbols g++ uses for static constructors and destructors.
+
+ The constructor table begins at __CTOR_LIST__ and contains a count
+ of the number of pointers (or -1 if the constructors are built in a
+ separate section by the linker), followed by the pointers to the
+ constructor functions, terminated with a null pointer. The
+ destructor table has the same format, and begins at __DTOR_LIST__. */
+
+static void
+scan_prog_file (const char *prog_name, enum pass which_pass)
+{
+ void (*int_handler) (int);
+#ifdef SIGQUIT
+ void (*quit_handler) (int);
+#endif
+ char *real_nm_argv[4];
+ const char **nm_argv = (const char **) real_nm_argv;
+ int argc = 0;
+ struct pex_obj *pex;
+ const char *errmsg;
+ int err;
+ char *p, buf[1024];
+ FILE *inf;
+
+ if (which_pass == PASS_SECOND)
+ return;
+
+ /* If we do not have an `nm', complain. */
+ if (nm_file_name == 0)
+ fatal ("cannot find 'nm'");
+
+ nm_argv[argc++] = nm_file_name;
+ if (NM_FLAGS[0] != '\0')
+ nm_argv[argc++] = NM_FLAGS;
+
+ nm_argv[argc++] = prog_name;
+ nm_argv[argc++] = (char *) 0;
+
+ /* Trace if needed. */
+ if (vflag)
+ {
+ const char **p_argv;
+ const char *str;
+
+ for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
+ fprintf (stderr, " %s", str);
+
+ fprintf (stderr, "\n");
+ }
+
+ fflush (stdout);
+ fflush (stderr);
+
+ pex = pex_init (PEX_USE_PIPES, "collect2", NULL);
+ if (pex == NULL)
+ fatal_perror ("pex_init failed");
+
+ errmsg = pex_run (pex, 0, nm_file_name, real_nm_argv, NULL, NULL, &err);
+ if (errmsg != NULL)
+ {
+ if (err != 0)
+ {
+ errno = err;
+ fatal_perror (errmsg);
+ }
+ else
+ fatal (errmsg);
+ }
+
+ int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN);
+#ifdef SIGQUIT
+ quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN);
+#endif
+
+ inf = pex_read_output (pex, 0);
+ if (inf == NULL)
+ fatal_perror ("can't open nm output");
+
+ if (debug)
+ fprintf (stderr, "\nnm output with constructors/destructors.\n");
+
+ /* Read each line of nm output. */
+ while (fgets (buf, sizeof buf, inf) != (char *) 0)
+ {
+ int ch, ch2;
+ char *name, *end;
+
+ /* If it contains a constructor or destructor name, add the name
+ to the appropriate list. */
+
+ for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
+ if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
+ break;
+
+ if (ch != '_')
+ continue;
+
+ name = p;
+ /* Find the end of the symbol name.
+ Do not include `|', because Encore nm can tack that on the end. */
+ for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
+ end++)
+ continue;
+
+
+ *end = '\0';
+ switch (is_ctor_dtor (name))
+ {
+ case 1:
+ if (which_pass != PASS_LIB)
+ add_to_list (&constructors, name);
+ break;
+
+ case 2:
+ if (which_pass != PASS_LIB)
+ add_to_list (&destructors, name);
+ break;
+
+ case 3:
+ if (which_pass != PASS_LIB)
+ fatal ("init function found in object %s", prog_name);
+#ifndef LD_INIT_SWITCH
+ add_to_list (&constructors, name);
+#endif
+ break;
+
+ case 4:
+ if (which_pass != PASS_LIB)
+ fatal ("fini function found in object %s", prog_name);
+#ifndef LD_FINI_SWITCH
+ add_to_list (&destructors, name);
+#endif
+ break;
+
+ case 5:
+ if (which_pass != PASS_LIB)
+ add_to_list (&frame_tables, name);
+ break;
+
+ default: /* not a constructor or destructor */
+ continue;
+ }
+
+ if (debug)
+ fprintf (stderr, "\t%s\n", buf);
+ }
+
+ if (debug)
+ fprintf (stderr, "\n");
+
+ do_wait (nm_file_name, pex);
+
+ signal (SIGINT, int_handler);
+#ifdef SIGQUIT
+ signal (SIGQUIT, quit_handler);
+#endif
+}
+
+#ifdef LDD_SUFFIX
+
+/* Use the List Dynamic Dependencies program to find shared libraries that
+ the output file depends upon and their initialization/finalization
+ routines, if any. */
+
+static void
+scan_libraries (const char *prog_name)
+{
+ static struct head libraries; /* list of shared libraries found */
+ struct id *list;
+ void (*int_handler) (int);
+#ifdef SIGQUIT
+ void (*quit_handler) (int);
+#endif
+ char *real_ldd_argv[4];
+ const char **ldd_argv = (const char **) real_ldd_argv;
+ int argc = 0;
+ struct pex_obj *pex;
+ const char *errmsg;
+ int err;
+ char buf[1024];
+ FILE *inf;
+
+ /* If we do not have an `ldd', complain. */
+ if (ldd_file_name == 0)
+ {
+ error ("cannot find 'ldd'");
+ return;
+ }
+
+ ldd_argv[argc++] = ldd_file_name;
+ ldd_argv[argc++] = prog_name;
+ ldd_argv[argc++] = (char *) 0;
+
+ /* Trace if needed. */
+ if (vflag)
+ {
+ const char **p_argv;
+ const char *str;
+
+ for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
+ fprintf (stderr, " %s", str);
+
+ fprintf (stderr, "\n");
+ }
+
+ fflush (stdout);
+ fflush (stderr);
+
+ pex = pex_init (PEX_USE_PIPES, "collect2", NULL);
+ if (pex == NULL)
+ fatal_perror ("pex_init failed");
+
+ errmsg = pex_run (pex, 0, ldd_file_name, real_ldd_argv, NULL, NULL, &err);
+ if (errmsg != NULL)
+ {
+ if (err != 0)
+ {
+ errno = err;
+ fatal_perror (errmsg);
+ }
+ else
+ fatal (errmsg);
+ }
+
+ int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN);
+#ifdef SIGQUIT
+ quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN);
+#endif
+
+ inf = pex_read_output (pex, 0);
+ if (inf == NULL)
+ fatal_perror ("can't open ldd output");
+
+ if (debug)
+ notice ("\nldd output with constructors/destructors.\n");
+
+ /* Read each line of ldd output. */
+ while (fgets (buf, sizeof buf, inf) != (char *) 0)
+ {
+ int ch2;
+ char *name, *end, *p = buf;
+
+ /* Extract names of libraries and add to list. */
+ PARSE_LDD_OUTPUT (p);
+ if (p == 0)
+ continue;
+
+ name = p;
+ if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
+ fatal ("dynamic dependency %s not found", buf);
+
+ /* Find the end of the symbol name. */
+ for (end = p;
+ (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
+ end++)
+ continue;
+ *end = '\0';
+
+ if (access (name, R_OK) == 0)
+ add_to_list (&libraries, name);
+ else
+ fatal ("unable to open dynamic dependency '%s'", buf);
+
+ if (debug)
+ fprintf (stderr, "\t%s\n", buf);
+ }
+ if (debug)
+ fprintf (stderr, "\n");
+
+ do_wait (ldd_file_name, pex);
+
+ signal (SIGINT, int_handler);
+#ifdef SIGQUIT
+ signal (SIGQUIT, quit_handler);
+#endif
+
+ /* Now iterate through the library list adding their symbols to
+ the list. */
+ for (list = libraries.first; list; list = list->next)
+ scan_prog_file (list->name, PASS_LIB);
+}
+
+#endif /* LDD_SUFFIX */
+
+#endif /* OBJECT_FORMAT_NONE */
+
+
+/*
+ * COFF specific stuff.
+ */
+
+#ifdef OBJECT_FORMAT_COFF
+
+#if defined (EXTENDED_COFF)
+
+# define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
+# define GCC_SYMENT SYMR
+# define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal)
+# define GCC_SYMINC(X) (1)
+# define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
+# define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
+
+#else
+
+# define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
+# define GCC_SYMENT SYMENT
+# if defined (C_WEAKEXT)
+# define GCC_OK_SYMBOL(X) \
+ (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \
+ ((X).n_scnum > N_UNDEF) && \
+ (aix64_flag \
+ || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
+ || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
+# define GCC_UNDEF_SYMBOL(X) \
+ (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \
+ ((X).n_scnum == N_UNDEF))
+# else
+# define GCC_OK_SYMBOL(X) \
+ (((X).n_sclass == C_EXT) && \
+ ((X).n_scnum > N_UNDEF) && \
+ (aix64_flag \
+ || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
+ || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
+# define GCC_UNDEF_SYMBOL(X) \
+ (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
+# endif
+# define GCC_SYMINC(X) ((X).n_numaux+1)
+# define GCC_SYMZERO(X) 0
+
+/* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */
+#ifdef _AIX51
+# define GCC_CHECK_HDR(X) \
+ ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
+ || (HEADER (X).f_magic == 0767 && aix64_flag))
+#else
+# define GCC_CHECK_HDR(X) \
+ ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
+ || (HEADER (X).f_magic == 0757 && aix64_flag))
+#endif
+
+#endif
+
+#ifdef COLLECT_EXPORT_LIST
+/* Array of standard AIX libraries which should not
+ be scanned for ctors/dtors. */
+static const char *const aix_std_libs[] = {
+ "/unix",
+ "/lib/libc.a",
+ "/lib/libm.a",
+ "/lib/libc_r.a",
+ "/lib/libm_r.a",
+ "/usr/lib/libc.a",
+ "/usr/lib/libm.a",
+ "/usr/lib/libc_r.a",
+ "/usr/lib/libm_r.a",
+ "/usr/lib/threads/libc.a",
+ "/usr/ccs/lib/libc.a",
+ "/usr/ccs/lib/libm.a",
+ "/usr/ccs/lib/libc_r.a",
+ "/usr/ccs/lib/libm_r.a",
+ NULL
+};
+
+/* This function checks the filename and returns 1
+ if this name matches the location of a standard AIX library. */
+static int ignore_library (const char *);
+static int
+ignore_library (const char *name)
+{
+ const char *const *p = &aix_std_libs[0];
+ while (*p++ != NULL)
+ if (! strcmp (name, *p)) return 1;
+ return 0;
+}
+#endif /* COLLECT_EXPORT_LIST */
+
+#if defined (HAVE_DECL_LDGETNAME) && !HAVE_DECL_LDGETNAME
+extern char *ldgetname (LDFILE *, GCC_SYMENT *);
+#endif
+
+/* COFF version to scan the name list of the loaded program for
+ the symbols g++ uses for static constructors and destructors.
+
+ The constructor table begins at __CTOR_LIST__ and contains a count
+ of the number of pointers (or -1 if the constructors are built in a
+ separate section by the linker), followed by the pointers to the
+ constructor functions, terminated with a null pointer. The
+ destructor table has the same format, and begins at __DTOR_LIST__. */
+
+static void
+scan_prog_file (const char *prog_name, enum pass which_pass)
+{
+ LDFILE *ldptr = NULL;
+ int sym_index, sym_count;
+ int is_shared = 0;
+
+ if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
+ return;
+
+#ifdef COLLECT_EXPORT_LIST
+ /* We do not need scanning for some standard C libraries. */
+ if (which_pass == PASS_FIRST && ignore_library (prog_name))
+ return;
+
+ /* On AIX we have a loop, because there is not much difference
+ between an object and an archive. This trick allows us to
+ eliminate scan_libraries() function. */
+ do
+ {
+#endif
+ /* Some platforms (e.g. OSF4) declare ldopen as taking a
+ non-const char * filename parameter, even though it will not
+ modify that string. So we must cast away const-ness here,
+ which will cause -Wcast-qual to burp. */
+ if ((ldptr = ldopen ((char *)prog_name, ldptr)) != NULL)
+ {
+ if (! MY_ISCOFF (HEADER (ldptr).f_magic))
+ fatal ("%s: not a COFF file", prog_name);
+
+ if (GCC_CHECK_HDR (ldptr))
+ {
+ sym_count = GCC_SYMBOLS (ldptr);
+ sym_index = GCC_SYMZERO (ldptr);
+
+#ifdef COLLECT_EXPORT_LIST
+ /* Is current archive member a shared object? */
+ is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
+#endif
+
+ while (sym_index < sym_count)
+ {
+ GCC_SYMENT symbol;
+
+ if (ldtbread (ldptr, sym_index, &symbol) <= 0)
+ break;
+ sym_index += GCC_SYMINC (symbol);
+
+ if (GCC_OK_SYMBOL (symbol))
+ {
+ char *name;
+
+ if ((name = ldgetname (ldptr, &symbol)) == NULL)
+ continue; /* Should never happen. */
+
+#ifdef XCOFF_DEBUGGING_INFO
+ /* All AIX function names have a duplicate entry
+ beginning with a dot. */
+ if (*name == '.')
+ ++name;
+#endif
+
+ switch (is_ctor_dtor (name))
+ {
+ case 1:
+ if (! is_shared)
+ add_to_list (&constructors, name);
+#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
+ if (which_pass == PASS_OBJ)
+ add_to_list (&exports, name);
+#endif
+ break;
+
+ case 2:
+ if (! is_shared)
+ add_to_list (&destructors, name);
+#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
+ if (which_pass == PASS_OBJ)
+ add_to_list (&exports, name);
+#endif
+ break;
+
+#ifdef COLLECT_EXPORT_LIST
+ case 3:
+#ifndef LD_INIT_SWITCH
+ if (is_shared)
+ add_to_list (&constructors, name);
+#endif
+ break;
+
+ case 4:
+#ifndef LD_INIT_SWITCH
+ if (is_shared)
+ add_to_list (&destructors, name);
+#endif
+ break;
+#endif
+
+ case 5:
+ if (! is_shared)
+ add_to_list (&frame_tables, name);
+#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
+ if (which_pass == PASS_OBJ)
+ add_to_list (&exports, name);
+#endif
+ break;
+
+ default: /* not a constructor or destructor */
+#ifdef COLLECT_EXPORT_LIST
+ /* Explicitly export all global symbols when
+ building a shared object on AIX, but do not
+ re-export symbols from another shared object
+ and do not export symbols if the user
+ provides an explicit export list. */
+ if (shared_obj && !is_shared
+ && which_pass == PASS_OBJ && !export_flag)
+ add_to_list (&exports, name);
+#endif
+ continue;
+ }
+
+ if (debug)
+#if !defined(EXTENDED_COFF)
+ fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
+ symbol.n_scnum, symbol.n_sclass,
+ (symbol.n_type ? "0" : ""), symbol.n_type,
+ name);
+#else
+ fprintf (stderr,
+ "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
+ symbol.iss, (long) symbol.value, symbol.index, name);
+#endif
+ }
+ }
+ }
+#ifdef COLLECT_EXPORT_LIST
+ else
+ {
+ /* If archive contains both 32-bit and 64-bit objects,
+ we want to skip objects in other mode so mismatch normal. */
+ if (debug)
+ fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
+ prog_name, HEADER (ldptr).f_magic, aix64_flag);
+ }
+#endif
+ }
+ else
+ {
+ fatal ("%s: cannot open as COFF file", prog_name);
+ }
+#ifdef COLLECT_EXPORT_LIST
+ /* On AIX loop continues while there are more members in archive. */
+ }
+ while (ldclose (ldptr) == FAILURE);
+#else
+ /* Otherwise we simply close ldptr. */
+ (void) ldclose(ldptr);
+#endif
+}
+#endif /* OBJECT_FORMAT_COFF */
+
+#ifdef COLLECT_EXPORT_LIST
+/* Given a library name without "lib" prefix, this function
+ returns a full library name including a path. */
+static char *
+resolve_lib_name (const char *name)
+{
+ char *lib_buf;
+ int i, j, l = 0;
+ /* Library extensions for AIX dynamic linking. */
+ const char * const libexts[2] = {"a", "so"};
+
+ for (i = 0; libpaths[i]; i++)
+ if (libpaths[i]->max_len > l)
+ l = libpaths[i]->max_len;
+
+ lib_buf = xmalloc (l + strlen(name) + 10);
+
+ for (i = 0; libpaths[i]; i++)
+ {
+ struct prefix_list *list = libpaths[i]->plist;
+ for (; list; list = list->next)
+ {
+ /* The following lines are needed because path_prefix list
+ may contain directories both with trailing '/' and
+ without it. */
+ const char *p = "";
+ if (list->prefix[strlen(list->prefix)-1] != '/')
+ p = "/";
+ for (j = 0; j < 2; j++)
+ {
+ sprintf (lib_buf, "%s%slib%s.%s",
+ list->prefix, p, name,
+ libexts[(j + aixrtl_flag) % 2]);
+ if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
+ if (file_exists (lib_buf))
+ {
+ if (debug) fprintf (stderr, "found: %s\n", lib_buf);
+ return (lib_buf);
+ }
+ }
+ }
+ }
+ if (debug)
+ fprintf (stderr, "not found\n");
+ else
+ fatal ("library lib%s not found", name);
+ return (NULL);
+}
+#endif /* COLLECT_EXPORT_LIST */