/* 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, 2007, 2008, 2009
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Chris Smith (csmith@convex.com).
Heavily modified by Michael Meissner (meissner@cygnus.com),
# define SIGCHLD SIGCLD
#endif
+/* TARGET_64BIT may be defined to use driver specific functionality. */
+#undef TARGET_64BIT
+#define TARGET_64BIT TARGET_64BIT_DEFAULT
+
#ifndef LIBRARY_PATH_ENV
#define LIBRARY_PATH_ENV "LIBRARY_PATH"
#endif
int number;
};
-int vflag; /* true if -v */
+bool vflag; /* true if -v or --version */
static int rflag; /* true if -r */
static int strip_flag; /* true if -s */
static const char *demangle_flag;
/* Current LTO mode. */
static enum lto_mode_d lto_mode = LTO_MODE_NONE;
-int debug; /* true if -debug */
+bool debug; /* true if -debug */
+bool helpflag; /* true if --help */
static int shared_obj; /* true if -shared */
enum scanfilter_masks {
SCAN_NOTHING = 0,
- SCAN_CTOR = 1 << SYM_CTOR,
+ SCAN_CTOR = 1 << SYM_CTOR,
SCAN_DTOR = 1 << SYM_DTOR,
SCAN_INIT = 1 << SYM_INIT,
SCAN_FINI = 1 << SYM_FINI,
va_end (ap);
}
+/* Notify user of a non-error, without translating the format string. */
+void
+notice_translated (const char *cmsgid, ...)
+{
+ va_list ap;
+
+ va_start (ap, cmsgid);
+ vfprintf (stderr, cmsgid, ap);
+ va_end (ap);
+}
+
/* Die when sys call fails. */
void
free (nstore);
}
+#ifdef OBJECT_FORMAT_NONE
+
/* Add an entry for the object file NAME to object file list LIST.
New entries are added at the end of the list. The original pointer
value of NAME is preserved, i.e., no string copy is performed. */
list->last = n;
}
+#endif /* OBJECT_FORMAT_NONE */
/* Perform a link-time recompilation and relink if any of the object
main (int argc, char **argv)
{
static const char *const ld_suffix = "ld";
+ static const char *const plugin_ld_suffix = PLUGIN_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";
const char *const full_ld_suffix =
concat(target_machine, "-", ld_suffix, NULL);
+ const char *const full_plugin_ld_suffix =
+ concat(target_machine, "-", plugin_ld_suffix, NULL);
const char *const full_nm_suffix =
concat (target_machine, "-", nm_suffix, NULL);
const char *const full_gnm_suffix =
concat (target_machine, "-", gstrip_suffix, NULL);
#else
const char *const full_ld_suffix = ld_suffix;
+ const char *const full_plugin_ld_suffix = plugin_ld_suffix;
const char *const full_nm_suffix = nm_suffix;
const char *const full_gnm_suffix = gnm_suffix;
#ifdef LDD_SUFFIX
const char **c_ptr;
char **ld1_argv;
const char **ld1;
-
+ bool use_plugin = false;
+
/* The kinds of symbols we will have to consider when scanning the
outcome of a first pass link. This is ALL to start with, then might
be adjusted before getting to the first pass link per se, typically on
int num_c_args;
char **old_argv;
+ bool use_verbose = false;
+
old_argv = argv;
expandargv (&argc, &argv);
if (argv != old_argv)
what LTO mode we are in. */
{
int i;
- bool use_plugin = false;
for (i = 1; argv[i] != NULL; i ++)
{
if (! strcmp (argv[i], "-debug"))
- debug = 1;
+ debug = true;
else if (! strcmp (argv[i], "-flto") && ! use_plugin)
- lto_mode = LTO_MODE_LTO;
+ {
+ use_verbose = true;
+ lto_mode = LTO_MODE_LTO;
+ }
else if (! strcmp (argv[i], "-fwhopr") && ! use_plugin)
- lto_mode = LTO_MODE_WHOPR;
+ {
+ use_verbose = true;
+ lto_mode = LTO_MODE_WHOPR;
+ }
else if (! strcmp (argv[i], "-plugin"))
{
use_plugin = true;
+ use_verbose = true;
lto_mode = LTO_MODE_NONE;
}
#ifdef COLLECT_EXPORT_LIST
obstack_free (&temporary_obstack, temporary_firstobj);
/* -fno-profile-arcs -fno-test-coverage -fno-branch-probabilities
- -fno-exceptions -w */
- num_c_args += 5;
+ -fno-exceptions -w -fno-whole-program */
+ num_c_args += 6;
c_argv = XCNEWVEC (char *, num_c_args);
c_ptr = CONST_CAST2 (const char **, char **, c_argv);
/* 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);
+ ld_file_name = find_a_file (&cpath,
+ use_plugin
+ ? plugin_ld_suffix
+ : 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);
+ ld_file_name = find_a_file (&path,
+ use_plugin
+ ? full_plugin_ld_suffix
+ : full_ld_suffix);
#ifdef REAL_NM_FILE_NAME
nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
*c_ptr++ = xstrdup (q);
}
}
+ if (use_verbose && *q == '-' && q[1] == 'v' && q[2] == 0)
+ {
+ /* Turn on trace in collect2 if needed. */
+ vflag = true;
+ }
}
obstack_free (&temporary_obstack, temporary_firstobj);
*c_ptr++ = "-fno-profile-arcs";
*c_ptr++ = "-fno-branch-probabilities";
*c_ptr++ = "-fno-exceptions";
*c_ptr++ = "-w";
+ *c_ptr++ = "-fno-whole-program";
/* !!! When GCC calls collect2,
it does not know whether it is calling collect2 or ld.
case 'v':
if (arg[2] == '\0')
- vflag = 1;
+ vflag = true;
break;
case '-':
}
else if (strncmp (arg, "--sysroot=", 10) == 0)
target_system_root = arg + 10;
+ else if (strncmp (arg, "--version", 9) == 0)
+ vflag = true;
+ else if (strncmp (arg, "--help", 9) == 0)
+ helpflag = true;
break;
}
}
would otherwise reference them all, hence drag all the corresponding
objects even if nothing else is referenced. */
{
- const char **export_object_lst
+ const char **export_object_lst
= CONST_CAST2 (const char **, char **, object_lst);
-
+
struct id *list = libs.first;
/* Compute the filter to use from the current one, do scan, then adjust
the "current" filter to remove what we just included here. This will
control whether we need a first pass link later on or not, and what
will remain to be scanned there. */
-
- scanfilter this_filter
- = shared_obj ? ld1_filter : (ld1_filter & ~SCAN_DWEH);
-
+
+ scanfilter this_filter = ld1_filter;
+#if HAVE_AS_REF
+ if (!shared_obj)
+ this_filter &= ~SCAN_DWEH;
+#endif
+
while (export_object_lst < object)
scan_prog_file (*export_object_lst++, PASS_OBJ, this_filter);
-
+
for (; list; list = list->next)
scan_prog_file (list->name, PASS_FIRST, this_filter);
-
+
ld1_filter = ld1_filter & ~this_filter;
}
fprintf (stderr, "\n");
}
+ if (helpflag)
+ {
+ fprintf (stderr, "Usage: collect2 [options]\n");
+ fprintf (stderr, " Wrap linker and generate constructor code if needed.\n");
+ fprintf (stderr, " Options:\n");
+ fprintf (stderr, " -debug Enable debug output\n");
+ fprintf (stderr, " --help Display this information\n");
+ fprintf (stderr, " -v, --version Display this program's version number\n");
+ fprintf (stderr, "Overview: http://gcc.gnu.org/onlinedocs/gccint/Collect2.html\n");
+ fprintf (stderr, "Report bugs: %s\n", bug_report_url);
+
+ collect_exit (0);
+ }
+
if (debug)
{
const char *ptr;
/* Load the program, searching all libraries and attempting to provide
undefined symbols from repository information.
-
+
If -r or they will be run via some other method, do not build the
- constructor or destructor list, just return now. */
+ constructor or destructor list, just return now. */
{
bool early_exit
= rflag || (! DO_COLLECT_EXPORT_LIST && ! do_collecting);
objects and libraries has performed above. In the !shared_obj case, we
expect the relevant tables to be dragged together with their associated
functions from precise cross reference insertions by the compiler. */
-
+
if (early_exit || ld1_filter != SCAN_NOTHING)
do_tlink (ld1_argv, object_lst);
-
+
if (early_exit)
{
#ifdef COLLECT_EXPORT_LIST
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);
+ notice_translated (ngettext ("%d constructor found\n",
+ "%d constructors found\n",
+ constructors.number),
+ constructors.number);
+ notice_translated (ngettext ("%d destructor found\n",
+ "%d destructors found\n",
+ destructors.number),
+ destructors.number);
+ notice_translated (ngettext("%d frame table found\n",
+ "%d frame tables found\n",
+ frame_tables.number),
+ frame_tables.number);
}
/* If the scan exposed nothing of special interest, there's no need to
be in ELF format. */
static bool
-is_elf (const char *prog_name)
+is_elf_or_coff (const char *prog_name)
{
FILE *f;
char buf[4];
static char magic[4] = { 0x7f, 'E', 'L', 'F' };
+ static char coffmag[2] = { 0x4c, 0x01 };
- f = fopen (prog_name, "r");
+ f = fopen (prog_name, "rb");
if (f == NULL)
return false;
if (fread (buf, sizeof (buf), 1, f) != 1)
buf[0] = 0;
fclose (f);
- return memcmp (buf, magic, sizeof (magic)) == 0;
+ return memcmp (buf, magic, sizeof (magic)) == 0
+ || memcmp (buf, coffmag, sizeof (coffmag)) == 0;
}
/* Generic version to scan the name list of the loaded program for
if (which_pass == PASS_SECOND)
return;
- /* LTO objects must be in ELF format. This check prevents
+ /* LTO objects must be in a known format. This check prevents
us from accepting an archive containing LTO objects, which
gcc cannnot currently handle. */
- if (which_pass == PASS_LTOINFO && !is_elf (prog_name))
+ if (which_pass == PASS_LTOINFO && !is_elf_or_coff (prog_name))
return;
/* If we do not have an `nm', complain. */
/* Look for the LTO info marker symbol, and add filename to
the LTO objects list if found. */
for (p = buf; (ch = *p) != '\0' && ch != '\n'; p++)
- if (ch == ' '
- && (strncmp (p +1 , "gnu_lto_v1", 10) == 0)
- && ISSPACE( p[11]))
+ if (ch == ' ' && p[1] == '_' && p[2] == '_'
+ && (strncmp (p + (p[3] == '_' ? 2 : 1), "__gnu_lto_v1", 12) == 0)
+ && ISSPACE (p[p[3] == '_' ? 14 : 13]))
{
add_lto_object (<o_objects, prog_name);
/* 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);
+ scan_prog_file (list->name, PASS_LIB, SCAN_ALL);
}
#endif /* LDD_SUFFIX */
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